WO2024106707A1 - 환기 시스템 및 그 제어 방법 - Google Patents
환기 시스템 및 그 제어 방법 Download PDFInfo
- Publication number
- WO2024106707A1 WO2024106707A1 PCT/KR2023/013011 KR2023013011W WO2024106707A1 WO 2024106707 A1 WO2024106707 A1 WO 2024106707A1 KR 2023013011 W KR2023013011 W KR 2023013011W WO 2024106707 A1 WO2024106707 A1 WO 2024106707A1
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- WIPO (PCT)
- Prior art keywords
- heat exchanger
- flow path
- processor
- blower
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
- F24F12/003—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid using a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
- F24F2013/205—Mounting a ventilator fan therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/52—Air quality properties of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/10—Weather information or forecasts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/20—Sunlight
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
Definitions
- the disclosed invention relates to a ventilation system that provides comfortable air to an indoor space.
- a ventilation device is a device that supplies outdoor air to an indoor space or exchanges indoor air with outdoor air to ventilate an indoor space.
- Conventional ventilation devices could only control indoor temperature and humidity through heat exchange between outdoor air and indoor air generated while passing through a heat exchanger. As a result, dehumidification of outdoor air supplied indoors was incomplete, and it was difficult to maintain indoor temperature and humidity in a comfortable state.
- the disclosed invention provides a ventilation system capable of cleaning a heat exchanger provided inside a ventilation device.
- a ventilation system includes a ventilation device and an outdoor unit.
- the ventilation device includes a housing including a first inlet, a second inlet, a first outlet, and a second outlet; a plurality of dampers that change the flow path of air flowing through the housing; a first blower blowing the air to the first outlet; a second blower blowing the air to the second outlet; A total heat exchanger provided in the housing; a heat exchanger provided within the housing; and a processor.
- the processor forms a first flow path through which outdoor air sucked through the first intake port passes through the total heat exchanger and is discharged through the first outlet through the heat exchanger.
- the plurality of dampers, the first blower, and the second blower are used. You can control it.
- a flow path can be formed within the ventilation device. While air flows through the flow path formed in the ventilation device, the processor may control the outdoor unit to operate to form frost in the heat exchanger. The processor may control the outdoor unit to stop operation based on a predetermined freezing termination condition in order to melt the frost and clean the heat exchanger.
- the plurality of dampers include: a first damper opening and closing the first intake port; and a second damper that opens and closes the connection passage formed between the first inlet and the second inlet.
- the processor may control the first damper to open the first intake port, control the second damper to close the connection flow path, and operate the first blower.
- the processor may control the first damper to close the first intake port, control the second damper to open the connection passage, and operate the first blower to form the second flow path. there is.
- the ventilation device may include a temperature sensor that detects the temperature of the outdoor air flowing in through the first flow path or the temperature of the indoor air flowing in through the second flow path; and a humidity sensor that detects the relative humidity of the outdoor air flowing in through the first flow path or the relative humidity of the indoor air flowing in through the second flow path.
- the processor may control the plurality of dampers so that the first flow path and the second flow path are formed alternately for a predetermined time.
- the processor may calculate a first absolute humidity based on the detected temperature and the detected relative humidity of the outdoor air flowing through the first flow path.
- the processor may calculate a second absolute humidity based on the detected temperature and the detected relative humidity of the indoor air flowing through the second flow path.
- the processor may select one of the first flow path and the second flow path to form the flow path within the ventilation device based on comparing the first absolute humidity and the second absolute humidity.
- the processor selects the first flow path based on the first absolute humidity being higher than or equal to the second absolute humidity, or the second flow path based on the first absolute humidity being lower than the second absolute humidity. You can choose Euro.
- the ventilation device further includes a heat exchanger temperature sensor that detects the temperature of the heat exchanger, and the freeze termination condition is that the operating time of the outdoor unit reaches a predetermined time limit or the temperature of the heat exchanger is set to the target temperature. It may include reaching.
- the processor sets the detected temperature and the detected relative humidity of the outdoor air flowing through the first flow path as variables or the detected temperature and the detected relative humidity of the indoor air flowing through the second flow path as variables. Based on a predetermined correlation function, the target temperature can be determined.
- the processor determines the rotational speed of the compressor included in the outdoor unit and the first compressor based on the detected relative humidity of the outdoor air flowing through the first flow path or the detected relative humidity of the indoor air flowing through the second flow path.
- the rotation speed of the blower can be determined.
- the processor is configured to operate the compressor based on whether the detected relative humidity of the outdoor air flowing through the first flow path or the detected relative humidity of the indoor air flowing through the second flow path is higher than a predetermined reference humidity range.
- the rotation speed and the rotation speed of the first blower may be reduced.
- the processor may be based on whether the detected relative humidity of the outdoor air flowing through the first flow path or the detected relative humidity of the indoor air flowing through the second flow path is lower than the predetermined reference humidity range, The rotational speed of the compressor and the rotational speed of the first blower may be increased.
- the ventilation system further includes a display that displays information regarding the operation of the ventilation system, and the processor controls the display to display flow path information regarding selection of one of the first flow path and the second flow path. You can.
- the ventilation system further includes a display that displays information about the operation of the ventilation system, and the processor predicts the time required to complete cleaning of the heat exchanger after the outdoor unit is stopped based on the freeze termination condition.
- the display can be controlled to display .
- a ventilation system includes a ventilation device and an outdoor unit.
- the ventilation device includes a housing including a first inlet, a second inlet, a first outlet, and a second outlet; a plurality of dampers that change the flow path of air flowing through the housing; a first blower blowing the air to the first outlet; a second blower blowing the air to the second outlet; A total heat exchanger provided in the housing; a heat exchanger provided within the housing; and a processor.
- the processor may control the plurality of dampers, the first blower, and the second blower to allow the air to flow into the heat exchanger.
- the processor controls the outdoor unit to operate to form frost in the heat exchanger while air flows to the heat exchanger, and the operating time of the outdoor unit reaches a predetermined time limit or the detected temperature of the heat exchanger reaches the target temperature.
- the outdoor unit can be controlled to stop operation based on reaching .
- the ventilation device includes a temperature sensor that detects the temperature of the air flowing into the heat exchanger; and a humidity sensor that detects the relative humidity of the air flowing into the heat exchanger, wherein the processor determines a predetermined correlation between the temperature of the air flowing into the heat exchanger and the relative humidity of the air flowing into the heat exchanger as a variable. Based on the function, the target temperature can be determined.
- the ventilation device further includes a humidity sensor that detects the relative humidity of the air flowing into the heat exchanger, and the processor rotates the compressor included in the outdoor unit based on the detected relative humidity of the air flowing into the heat exchanger. The speed and rotational speed of the first blower can be determined.
- the processor reduces the rotational speed of the compressor and the rotational speed of the first blower based on the relative humidity of the air flowing into the heat exchanger being higher than a predetermined reference humidity range, or reducing the rotational speed of the air flowing into the heat exchanger. Based on the relative humidity of air being lower than the predetermined reference humidity range, the rotational speed of the compressor and the rotational speed of the first blower may be increased.
- the disclosed ventilation system can clean the heat exchanger by forming frost on the heat exchanger inside the ventilation device and then thawing the frost.
- the disclosed ventilation system can effectively clean the heat exchanger by selectively changing the flow path of air flowing into the heat exchanger.
- the disclosed ventilation system can prevent poor cleaning of the heat exchanger by appropriately setting conditions for terminating the cleaning of the heat exchanger, and can also prevent unnecessary energy consumption.
- FIG. 1 shows a ventilation system including a ventilation device according to one embodiment.
- FIG. 2 is a top plan view of the inside of a ventilation device according to an embodiment, and shows an example of an air flow path formed inside the ventilation device.
- Figure 3 shows another example of an air flow path formed inside a ventilation device.
- Figure 4 shows the circulation of refrigerant during a ventilation operation of a ventilation system or when cleaning a heat exchanger according to an embodiment.
- Figure 5 is an exploded perspective view of a ventilation device according to one embodiment.
- Figure 6 is a perspective view from below with some components of the ventilation device according to one embodiment removed.
- FIG. 7 is a view of the first inner housing of the ventilation device shown in FIG. 5 turned upside down.
- FIG. 8 is a view of the second inner housing of the ventilation device shown in FIG. 5 turned upside down.
- FIG 9 shows an integrated air conditioning system including a ventilation device according to one embodiment.
- Figure 10 is a control block diagram of configurations of a ventilation device according to one embodiment.
- Figure 11 is a control block diagram of configurations of an integrated controller according to an embodiment.
- Figure 12 is a flowchart explaining a control method of a ventilation system according to an embodiment.
- FIG. 13 is a flowchart explaining in more detail the control method of the ventilation system described in FIG. 12.
- FIG. 14 is a flowchart of some steps changed in the control method of the ventilation system described in FIG. 13.
- first, second, etc. used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms refer to one It is used only for the purpose of distinguishing one component from another.
- a first component may be named a second component without departing from the scope of the present invention, and similarly, the second component may also be named a first component.
- the term “and/or” includes any of a plurality of related stated items or a combination of a plurality of related stated items.
- ⁇ unit may refer to a unit that processes at least one function or operation.
- the terms may refer to at least one hardware such as a field-programmable gate array (FPGA) / application specific integrated circuit (ASIC), at least one software stored in memory, or at least one process processed by a processor. there is.
- FPGA field-programmable gate array
- ASIC application specific integrated circuit
- the codes attached to each step are used to identify each step, and these codes do not indicate the order of each step.
- Each step is performed differently from the specified order unless a specific order is clearly stated in the context. It can be.
- FIG. 1 shows a ventilation system including a ventilation device according to one embodiment.
- Figure 2 is a top view of the inside of a ventilation device according to an embodiment, showing an example of an air flow path formed inside the ventilation device.
- the ventilation system 1 may include a ventilation device 100 connected to an indoor space and an outdoor space. Additionally, the ventilation system 1 may include an outdoor unit 200 that supplies refrigerant to the ventilation device 100.
- the ventilation device 100 and the outdoor unit 200 may be installed in a machine room (eg, a utility room in a house) that is separate from the outdoor space and the indoor space. The location where the ventilation device 100 and the outdoor unit 200 are installed is not limited to the examples.
- the ventilation device 100 may include a housing 101 that forms an exterior.
- the housing 101 may have a hexahedral shape.
- the housing 101 may include an intake flow path 102 that sucks outdoor air (OA) into the indoor space and guides it to the indoor space, and an exhaust flow path 103 that guides indoor air (RA) into the outdoor space.
- the intake flow path 102 and the exhaust flow path 103 may be partitioned from each other by a plurality of partition walls 108.
- the housing 101 has a first inlet 101a connected to the outdoor space and provided to suck outdoor air (OA) into the housing 101, and a first intake port 101a connected to the indoor space and sucked into the housing 101. It may include a first outlet 101b provided to discharge (OA) into the indoor space, and a first intake chamber 104 and a second intake chamber 105 forming the intake passage 102.
- the intake passage 102 may connect the first intake port 101a and the first discharge port 101b.
- the housing 101 has a second intake port 101c connected to the indoor space and provided for sucking indoor air (RA) into the housing 101, and indoor air connected to the outdoor space and sucked into the housing 101 ( It may include a second outlet 101d provided to discharge RA) into the outdoor space, and a first exhaust chamber 106 and a second exhaust chamber 107 forming the exhaust passage 103.
- the exhaust flow path 103 may connect the second intake port 101c and the second discharge port 101d.
- the ventilation device 100 includes a first duct D1 connected to the first intake port 101a of the housing 101 and extending to the outdoor space, and a second duct connected to the first outlet 101b and extending to the indoor space ( D2), a third duct (D3) connected to the second intake port (101c) and extending to the indoor space, and a fourth duct (D4) connected to the second outlet (101d) and extending to the outdoor space. .
- the ventilation device 100 includes a first blower 109a connected to the first outlet 101b inside the second intake chamber 105 and a second outlet 101d inside the second exhaust chamber 107. It may include a connected second blower (109b).
- the first blower 109a may generate the blowing force necessary to discharge air through the first outlet 101b.
- the second blower 109b may generate blowing force necessary to discharge air to the second outlet 101d. That is, when the first blower 109a operates, the air inside the housing 101 is discharged into the indoor space through the first outlet 101b. When the second blower 109b operates, the air inside the housing 101 is discharged to the outdoor space through the second outlet 101d.
- the ventilation device 100 may include a total heat exchanger 110 provided for heat exchange between outdoor air (OA) and indoor air (RA).
- OA outdoor air
- RA indoor air
- the air flowing through the exhaust passage 103 and the air flowing through the intake passage 102 may exchange heat with each other in the total heat exchanger 110.
- SA 'supply air
- EA 'exhaust air
- the total heat exchanger 110 may be made of paper coated with lithium chloride, and may also be called a 'total heat exchange element'.
- the total heat exchanger 110 may be implemented as a plate-type total heat exchanger or a rotary-type total heat exchanger.
- the total heat exchanger 110 may be disposed at a point where the intake flow path 102 and the exhaust flow path 103 intersect. That is, the total heat exchanger 110 is disposed on the intake passage 102 and the exhaust passage 103 at the same time.
- the total heat exchanger 110 may connect the first intake chamber 104 and the second intake chamber 105.
- the total heat exchanger 110 may connect the first exhaust chamber 106 and the second exhaust chamber 107.
- the outdoor air (OA) flowing through the intake flow path (102) and the indoor air (RA) flowing through the exhaust flow path (103) exchange heat in the total heat exchanger (110) without contact. do.
- the ventilation device 100 may include a filter 112 that collects foreign substances contained in outdoor air (OA).
- the filter 112 may be placed adjacent to the total heat exchanger 110.
- the total heat exchanger 110 includes an intake inlet end 110a, and the filter 112 may be arranged to face the intake inlet end 110a of the total heat exchanger 110.
- the filter 112 may be arranged to closely face the intake inlet end 110a. Accordingly, foreign substances contained in the outdoor air (OA) flowing in through the first inlet 101a can be filtered out by the filter 112, and contamination of the total heat exchanger 110 can be prevented.
- OA outdoor air
- the filter 112 may be a HEPA (High Efficiency Particulate Air) filter.
- HEPA filters may be composed of glass fibers.
- the filter 112 may be provided as a photocatalyst filter that induces chemical reactions in air using a photocatalyst. That is, the filter 112 includes a photocatalyst and can capture various pathogens and bacteria present in the air by inducing a chemical reaction using the light energy of the photocatalyst. By promoting chemical action, odor particles in the air can be decomposed, removed, or collected.
- the present invention is not limited to this, and the filter 112 may be provided with various types of filters capable of collecting foreign substances.
- Conventional ventilation devices include only a total heat exchanger that performs heat exchange between outdoor air (OA) and indoor air (RA).
- Conventional ventilation devices are not connected to the outdoor unit. In other words, the conventional ventilation device does not include a separate heat exchanger that receives refrigerant from the outdoor unit.
- Conventional ventilation devices are only capable of supplying outdoor air to an indoor space and discharging indoor air to an outdoor space, and cannot perform an additional dehumidifying function.
- the disclosed ventilation device 100 includes heat exchangers 120 and 130 provided to control the humidity and temperature of the air flowing through the intake passage 102.
- the heat exchangers 120 and 130 may also be referred to as 'dehumidification modules'.
- the heat exchangers 120 and 130 can remove moisture contained in the air passing through the heat exchangers 120 and 130. Since moisture contained in the air is removed as it passes through the heat exchangers 120 and 130, dry air can be supplied to the indoor space.
- the intake flow path 102 may also be referred to as a ‘first flow path’.
- the heat exchangers 120 and 130 may include a first heat exchanger 120 and a second heat exchanger 130. Heat exchangers 120 and 130 may be provided on the intake passage 102. The heat exchangers 120 and 130 may be disposed inside the second intake chamber 105. The first heat exchanger 120 and the second heat exchanger 130 may be disposed on a downstream side of the intake passage 102 than the total heat exchanger 110. The second heat exchanger 130 may be disposed upstream of the intake passage 102 than the first heat exchanger 120. In other words, the first heat exchanger 120 may be disposed on a downstream side of the intake passage 102 than the second heat exchanger 130.
- the number of heat exchangers provided inside the ventilation device 100 is not limited to the example. That is, the ventilation device 100 may include at least one heat exchanger.
- the outdoor air (OA) sucked in through the first intake port 101a is supplied to the first intake chamber 104, the total heat exchanger 110, the second heat exchanger 130, and the first intake chamber 104. After sequentially passing through the heat exchanger 120, it is discharged into the indoor space through the first outlet (101b).
- the indoor air (RA) sucked in through the second intake port 101c passes through the first exhaust chamber 106 and the total heat exchanger 110 and is then discharged to the outdoor space through the second outlet 101d.
- Air flowing through the intake passage 102 from the first intake port 101a toward the first discharge port 101b may be dehumidified by the second heat exchanger 130. Additionally, air passing through the second heat exchanger 130 may be heated or cooled by the first heat exchanger 120.
- the ventilation device 100 may include a first sterilizing device 111 for sterilizing the first heat exchanger 120 and the second heat exchanger 130.
- the first sterilizing device 111 may be disposed between the first heat exchanger 120 and the second heat exchanger 130.
- the first sterilizing device 111 can simultaneously sterilize the first heat exchanger 120 and the second heat exchanger 130 disposed on both sides.
- the first sterilizing device 111 may include an ultraviolet light source that irradiates ultraviolet light.
- the first sterilizing device 111 may include a UV-LED.
- the ventilation device 100 may include a second sterilizing device 113 for sterilizing indoor air (RA) sucked through the second inlet 101c.
- the second sterilizing device 113 may be disposed within the first exhaust chamber 106.
- the second sterilizing device 113 may include at least one of a heater, an infrared lamp, or a UV-LED.
- Ventilation device 100 may include various temperature sensors.
- the ventilation device 100 includes a temperature sensor 142 that detects the temperature of air flowing into the heat exchangers 120 and 130, and a heat exchanger temperature sensor 144 that detects the temperature of the heat exchangers 120 and 130. ) may include.
- the temperature sensor 142 may be disposed upstream of the heat exchangers 120 and 130 in the intake passage 102.
- the temperature sensor 142 may also be referred to as a ‘first temperature sensor’.
- the temperature sensor 142 may be located between the total heat exchanger 110 and the second heat exchanger 130.
- the temperature sensor 142 detects the first temperature of the outdoor air (OA) flowing into the heat exchangers 120 and 130 through the first flow path, which is the intake flow path 102. You can.
- the indoor air (RA) sucked through the second intake port 101c is guided to the heat exchanger 120 and 130.
- a second flow path may be formed.
- the temperature sensor 142 may detect the second temperature of the indoor air (RA) flowing into the heat exchangers 120 and 130 through the second flow path.
- the heat exchanger temperature sensor 144 may be provided on the surface of the heat exchangers 120 and 130.
- the heat exchanger temperature sensor 144 is provided to measure the temperatures of each of the first heat exchanger 120 and the second heat exchanger 130, or the first heat exchanger 120 and the second heat exchanger 130. Each may be prepared separately.
- the heat exchanger temperature sensor 144 may also be referred to as a 'second temperature sensor'.
- the supply air (SA) discharged into the room after passing through the temperature sensor and heat exchangers 120 and 130 provided at each of the first inlet 101a and the second inlet 101c of the ventilation device 100. ) may further include at least one discharge temperature sensor that measures the discharge temperature, which is a temperature of ).
- the discharge temperature sensor may be disposed on the downstream side of the intake passage 102 than the total heat exchanger 110, the first heat exchanger 120, and the second heat exchanger 130.
- the discharge temperature sensor can measure the temperature of the supply air (SA) discharged into the room through the first outlet (101b).
- the ventilation device 100 may include a humidity sensor 150 that measures the relative humidity of air flowing into the heat exchangers 120 and 130.
- the humidity sensor 150 may be disposed upstream of the heat exchangers 120 and 130 in the intake passage 102.
- the humidity sensor 150 may be located between the total heat exchanger 110 and the second heat exchanger 130.
- the humidity sensor 150 can detect the first relative humidity of outdoor air (OA) flowing into the heat exchangers 120 and 130 through the first flow path, which is the intake flow path 102. .
- the humidity sensor 150 measures the second relative humidity of the indoor air (RA) flowing into the heat exchangers 120 and 130 through the second flow path. It can be detected.
- the housing 101 may include a connection passage 102b connecting the first intake chamber 104 and the first exhaust chamber 106.
- the connection passage 102b is disposed between the first intake chamber 104 and the first exhaust chamber 106, and is located on the partition wall 108 dividing the first intake chamber 104 and the first exhaust chamber 106. can be placed.
- the connection passage 102b may be formed by cutting at least a portion of the partition wall 108. When the connection passage 102b is opened, the first intake chamber 104 and the first exhaust chamber 106 may communicate with each other.
- the ventilation device 100 may include a plurality of dampers 330 and 340 provided to change the air flow path formed inside the housing 101.
- the plurality of dampers 330 and 340 may open or close passages formed inside the ventilation device 100.
- the first damper 330 is provided at the first intake port 101a and can open or close the first intake port 101a.
- the second damper 340 may be provided between one side of the total heat exchanger 110 and the inner wall of the housing 101.
- the second damper 340 may be disposed on the connection passage 102b.
- the second damper 340 may open or close the connection passage 102b formed between the first inlet 101a and the second inlet 101c.
- a damper (not shown) may also be provided at the second intake port 101c.
- the damper provided at the second intake port 101c may be referred to as a 'third damper'.
- the third damper may open or close the second intake port 101c.
- the opening degree of each of the plurality of dampers 330 and 340 may be adjusted.
- the first damper 330 provided in the first intake port 101a is opened, and the second damper 340 provided in the connection passage 102b is closed.
- both the first blower (109a) and the second blower (109b) operate. Therefore, the outdoor air (OA) sucked in through the first intake port (101a) is discharged into the indoor space through the first outlet (101b) along the intake flow path 102, and the indoor air sucked in through the second intake port (101c) (RA) is discharged to the outdoor space through the second outlet (101d) along the exhaust flow path 103.
- the first flow path or second intake port (101c) guides the outdoor air (OA) sucked through the first intake port (101a) to the heat exchangers (120, 130).
- a second flow path that guides the indoor air (RA) sucked in through the heat exchangers (120, 130) may be formed.
- the first flow path is the same as the intake flow path 102 described above.
- the second flow path is a flow path that flows indoor air (RA) sucked through the second intake port 101c back into the indoor space.
- the first blower 109a may operate and the second blower 109b may be stopped. If the second blower 109b does not operate, air may not flow through the exhaust passage 103.
- the first damper 330 may be opened, the second damper 340 may be closed, and the first blower 109a may operate.
- the second blower 109b may be controlled not to operate. Accordingly, the outdoor air (OA) sucked through the first intake port 101a may pass through the filter 112 and the total heat exchanger 110 and then flow into the heat exchangers 120 and 130. Air that has passed through the heat exchangers 120 and 130 may be discharged into the indoor space through the first outlet 101b.
- OA outdoor air
- the first damper 330 may be closed, the second damper 340 may be opened, and the first blower 109a may operate. Since the first intake port 101a is closed due to the closure of the first damper 330, the inflow of outdoor air (OA) into the housing 101 is blocked. Additionally, the second blower 109b may be controlled not to operate. Therefore, the indoor air (RA) sucked through the second intake port 101c can pass through the connection passage 102b, and after passing through the filter 112 and the total heat exchanger 110, it is transferred to the heat exchangers 120 and 130. may be introduced. Air that has passed through the heat exchangers 120 and 130 may be discharged into the indoor space through the first outlet 101b.
- the first flow path or the second flow path may be selected. Selection of the first flow path or the second flow path may be performed based on the first absolute humidity of the outdoor air (OA) and the second absolute humidity of the indoor air (RA) flowing into the heat exchangers 120 and 130. To obtain the first absolute humidity of outdoor air (OA) and the second absolute humidity of indoor air (RA), the first flow path and the second flow path are each alternately operated for a predetermined time (e.g., 30 seconds). A plurality of dampers 330 and 340 may be controlled to be formed.
- the heat exchangers (120, 130) are cleaned by thawing the frost.
- air containing a relatively large amount of moisture needs to be introduced into the heat exchangers (120, 130).
- the first absolute air (OA) flowing into the heat exchangers (120, 130) through the first flow path is The humidity and the second absolute humidity of the indoor air (RA) flowing into the heat exchangers 120 and 130 through the second flow path may be compared.
- the first absolute humidity of the outdoor air (OA) flowing into the heat exchangers (120, 130) through the first flow path is the second absolute humidity of the indoor air (RA) flowing into the heat exchangers (120, 130) through the second flow path.
- the first flow path may be used for cleaning the heat exchangers 120 and 130.
- the second flow path may be used for cleaning the heat exchangers (120, 130).
- Figure 4 shows the circulation of refrigerant during a ventilation operation of a ventilation system or when cleaning a heat exchanger according to an embodiment.
- the outdoor unit 200 includes a compressor 210 that compresses the refrigerant, an accumulator 212 that prevents non-evaporated liquid refrigerant from flowing into the compressor 210, and heat exchange between outdoor air and the refrigerant. It may include an outdoor heat exchanger 220 and a cooling fan 220a provided around the outdoor heat exchanger 220. Additionally, the outdoor unit 200 may include a four-way valve 230 that changes the circulation direction of the refrigerant.
- the compressor 210 may operate by receiving electrical energy from an external power source.
- the compressor 210 includes a compressor motor (not shown) and compresses low-pressure gaseous refrigerant to high pressure using the rotational force of the compressor motor.
- the outdoor heat exchanger 220 may operate as a 'condenser' that condenses refrigerant.
- the four-way valve 230 may be controlled to guide the refrigerant compressed in the compressor 210 to the outdoor heat exchanger 220. That is, when the ventilation system 1 operates in the ventilation mode or the heat exchanger cleaning mode, the refrigerant passes from the compressor 210 through the outdoor heat exchanger 220 and then into the heat exchangers 120 and 130 of the ventilation device 100. can be supplied.
- the ventilation system 1 may operate to supply warm air to an indoor space.
- the outdoor heat exchanger 220 may operate as an 'evaporator' that evaporates the refrigerant.
- the four-way valve 230 may be controlled to first guide the refrigerant compressed in the compressor 210 to the heat exchangers 120 and 130 of the ventilation device 100. That is, the refrigerant may be supplied from the compressor 210 to the outdoor heat exchanger 220 after passing through the heat exchangers 120 and 130 of the ventilation device 100.
- the outdoor unit 200 corresponds to an outdoor unit for an air conditioner commonly known in the art
- a person skilled in the art can easily change or add various components necessary for implementing the outdoor unit 200.
- the disclosed ventilation system 1 can be operated using a commonly used outdoor unit 200, so the ventilation device 100 does not include a separate compressor, so it can be miniaturized and production costs can be reduced. can be promoted.
- the first heat exchanger 120 of the ventilation device 100 may be connected to the outdoor unit 200 through a first refrigerant pipe 121.
- the first heat exchanger 120 may be connected to the outdoor heat exchanger 220 of the outdoor unit 200.
- the second heat exchanger 130 may be connected to the first heat exchanger 120 through a second refrigerant pipe 131.
- the second heat exchanger 130 may be connected to the outdoor unit 200 through a third refrigerant pipe 132.
- the second heat exchanger 130 may be connected to the accumulator 212 of the outdoor unit 200.
- the ventilation device 100 may include a first expansion device 160 provided in the first refrigerant pipe 121.
- the first expansion device 160 can selectively expand the refrigerant supplied to the first heat exchanger 120 through the first refrigerant pipe 121.
- the refrigerant passing through the first expansion device 160 may be in a reduced pressure state compared to before passing through the first expansion device 160.
- the ventilation device 100 may include a second expansion device 170 provided in the second refrigerant pipe 131.
- the second expansion device 170 can selectively expand the refrigerant discharged from the first heat exchanger 120 and supplied to the second heat exchanger 130 through the second refrigerant pipe 131.
- the refrigerant passing through the second expansion device 170 may be in a reduced pressure state compared to before passing through the second expansion device 170.
- the first expansion device 160 and the second expansion device 170 may be disposed inside the housing 101.
- the second refrigerant pipe 131 may be disposed inside the housing 101.
- the first expansion device 160 can expand a high-temperature, high-pressure refrigerant into a low-temperature, low-pressure refrigerant through a throttling action, and can control the flow rate of the refrigerant supplied to the first heat exchanger 120.
- the first expansion device 160 can depressurize the refrigerant by using the throttling effect of the refrigerant, which reduces pressure without heat exchange with the outside when the refrigerant passes through a narrow passage.
- the first expansion device 160 may include an electronic expansion valve (EEV) 161.
- the electronic expansion valve 161 can control the degree of expansion of the refrigerant and the flow rate of the refrigerant by adjusting the opening degree. When the electronic expansion valve 161 is fully opened, the refrigerant may pass through the electronic expansion valve 161 without resistance and the refrigerant may not expand.
- the second expansion device 170 may also expand the refrigerant through a throttling action.
- the second expansion device 170 may include a solenoid valve 171 and a capillary tube 172 connected in parallel with the solenoid valve 171.
- the solenoid valve 171 When the solenoid valve 171 is closed, the refrigerant moves to the capillary tube 172 and can expand by throttling, and when the solenoid valve 171 is open, the refrigerant can flow without resistance through the solenoid valve 171 and does not expand. It may not be possible.
- the solenoid valve 171 may be replaced with an electronic expansion valve (EEV).
- EEV electronic expansion valve
- both the first expansion device 160 and the second expansion device 170 may include an electronic expansion valve.
- the first expansion device 160 may include a solenoid valve and a capillary tube connected in parallel with the solenoid valve
- the second expansion device 170 may include an electronic expansion valve.
- Both the first expansion device 160 and the second expansion device 170 may include a solenoid valve and a capillary tube connected in parallel with the solenoid valve.
- the solenoid valve connected in parallel with the capillary tube can be replaced with an electronic expansion valve.
- the ventilation device 100 When operating in the ventilation mode of the ventilation system 1, the ventilation device 100 can suck in outdoor air (OA) and indoor air (RA) and provide air with controlled temperature and humidity to the indoor space. Therefore, ventilation of the indoor space can be achieved.
- a first dehumidifying mode, a second dehumidifying mode and a blowing mode may be provided.
- the ventilation system 1 may operate in one of a first dehumidifying mode, a second dehumidifying mode, and a blowing mode for ventilation operation.
- the processor 193 of the ventilation device 100 may control the ventilation device 100 to operate in the first dehumidifying mode, the second dehumidifying mode, or the blowing mode.
- the ventilation device 100 may operate while switching between the first dehumidification mode, the second dehumidification mode, and the blowing mode based on the indoor temperature and indoor humidity.
- the ventilation device 100 may further include an indoor temperature sensor that detects indoor temperature and an indoor humidity sensor that detects indoor humidity.
- the first dehumidifying mode will be described.
- the first expansion device 160 may expand the refrigerant.
- the second expansion device 170 may or may not expand the refrigerant.
- the second expansion device 170 may not expand the refrigerant in the first dehumidifying mode so that the refrigerant can flow smoothly.
- the solenoid valve 171 of the second expansion device 170 may be opened in the first dehumidification mode.
- the high-temperature, high-pressure refrigerant discharged from the compressor 210 is condensed in the outdoor heat exchanger 220 of the outdoor unit 200 and then flows into the first expansion device 160. It can be.
- the first expansion device 160 can expand the high-temperature, high-pressure refrigerant to a low-temperature, low-pressure state so that the refrigerant can evaporate in the first heat exchanger 120 and the second heat exchanger 130.
- the refrigerant expanded in the first expansion device 120 flows into the first heat exchanger 120 and may be evaporated by heat exchange with air passing through the first heat exchanger 120.
- the refrigerant discharged from the first heat exchanger 120 and introduced into the second heat exchanger 130 may be evaporated in the second heat exchanger 130 once again.
- the first heat exchanger 120 and the second heat exchanger 130 can condense and remove moisture contained in the air passing through the first heat exchanger 120 and the second heat exchanger 130 and cool the air. You can. That is, the ventilation system 1 operating in the first dehumidifying mode can simultaneously lower the temperature and humidity of outdoor air sucked into the room.
- the air supplied to the indoor space by the ventilation device 100 operating in the first dehumidifying mode may have a temperature and humidity that make the user feel comfortable. Since the ventilation device 100 operating in the first dehumidification mode discharges cooled and dried air into the indoor space, the first dehumidification mode may be called 'cooling dehumidification mode'.
- the second dehumidifying mode will be described.
- the first expansion device 160 may not expand the refrigerant.
- the second expansion device 170 may expand the refrigerant.
- the high-temperature, high-pressure refrigerant discharged from the compressor 210 may be condensed in the outdoor heat exchanger 220 of the outdoor unit 200 and then flow into the first heat exchanger 120.
- the first heat exchanger 120 that receives the refrigerant can condense the refrigerant.
- the high-temperature, high-pressure refrigerant discharged from the first heat exchanger 120 may be expanded by the second expansion device 170 to become a low-temperature, low-pressure refrigerant.
- the expanded refrigerant may flow into the second heat exchanger 130 and may be evaporated by heat exchange with air passing through the second heat exchanger 130.
- air flowing through the intake passage 102 may sequentially pass through the second heat exchanger 130 and the first heat exchanger 120.
- the second heat exchanger 130 can condense and remove moisture contained in the air passing through the second heat exchanger 130, and the air passing through the second heat exchanger 130 can be cooled and dehumidified.
- the first heat exchanger 120 can heat the air from which moisture has been removed by the second heat exchanger 130 by condensing the refrigerant.
- the air that was cooled while passing through the second heat exchanger 130 is heated again by the first heat exchanger 120, so that the temperature may increase compared to when passing through the second heat exchanger 130.
- the relative humidity of the air that has passed through the second heat exchanger 130 and the first heat exchanger 120 may be lower than the relative humidity of the air that has passed through only the second heat exchanger 130. Therefore, air with a temperature and humidity that makes the user feel comfortable can be supplied to the indoor space. Since the ventilation device 100 operating in the second dehumidification mode can discharge dry air having the same or similar temperature as the indoor temperature into the indoor space, the second dehumidification mode may be called a 'constant temperature dehumidification mode'.
- the blowing mode will be explained.
- the refrigerant is not supplied to the first heat exchanger 120 and the second heat exchanger 130, and only heat exchange between outdoor air and indoor air can be performed by the total heat exchanger 110.
- the processor 193 blocks the flow of refrigerant flowing into the ventilation device 100, blocks the refrigerant flowing into the ventilation device 100 from flowing into the heat exchangers 120 and 130, or turns off the outdoor unit 200. By doing so, the ventilation device 100 can be operated in blowing mode.
- the ventilation device 100 is used cumulatively, foreign substances (eg, dust) may adhere to the surfaces of the heat exchangers 120 and 130. If the heat exchangers (120, 130) are contaminated, the heat transfer performance of the heat exchangers (120, 130) may deteriorate, and the air passing through the heat exchangers (120, 130) may be contaminated. Therefore, cleaning of the heat exchangers 120 and 130 is required.
- foreign substances eg, dust
- the disclosed ventilation system 1 can clean the heat exchangers 120 and 130 of the ventilation device 100 by forming frost on the heat exchangers 120 and 130 and then melting them. Washing of the heat exchangers 120 and 130 may be referred to as freeze wash.
- the ventilation system 1 drives the outdoor unit 200 to form frost on the heat exchangers 120 and 130 of the ventilation device 100, and forms frost on the heat exchangers 120 and 130. The operation of the outdoor unit 200 may be stopped to thaw the frost.
- the four-way valve 230 may be controlled to guide the refrigerant compressed in the compressor 210 to the outdoor heat exchanger 220. That is, in the heat exchanger cleaning mode, the refrigerant may be supplied from the compressor 210 to the heat exchangers 120 and 130 of the ventilation device 100 after passing through the outdoor heat exchanger 220.
- the first expansion device 160 may be controlled to expand the refrigerant.
- the second expansion device 170 may or may not expand the refrigerant.
- the second expansion device 170 may not expand the refrigerant in the first dehumidifying mode so that the refrigerant can flow smoothly.
- the refrigerant passes through the first heat exchanger 120 and the second heat exchanger 130, it exchanges heat with the surrounding air and is evaporated. Therefore, the air around the heat exchangers 120 and 130 is cooled.
- the heat exchangers 120 and 130 operate as evaporators, the surrounding air is cooled, so the surface temperature of the heat exchangers 120 and 130 can fall below 0°C, which is the freezing point of water. Therefore, water vapor around the heat exchangers 120 and 130 may lose heat and frost may form on the surfaces of the heat exchangers 120 and 130.
- frost forms in the heat exchangers (120, 130)
- heat exchange between the refrigerant inside the heat exchangers (120, 130) and the outside air does not occur. Therefore, while the outdoor unit 200 is operating, the temperature of the heat exchangers 120 and 130 continues to decrease.
- the direction of circulation of the refrigerant in the heat exchanger cleaning mode is the same as the direction of circulation of the refrigerant in the ventilation mode.
- ventilation mode there is a difference between ventilation mode and heat exchanger cleaning mode in that the air flow path is formed differently.
- the operation of the blowers 109a and 109b and the dampers 330 and 340 are controlled differently depending on the ventilation mode or the heat exchanger cleaning mode.
- both the first blower 109a and the second blower 109b operate. Additionally, the first damper 330 provided in the first intake port 101a is opened, and the second damper 340 provided in the connection passage 102b is closed. Accordingly, the outdoor air (OA) sucked in through the first intake port 101a flows along the intake passage 102 and is discharged into the indoor space through the first outlet port 101b. Additionally, the indoor air (RA) sucked in through the second intake port 101c flows along the exhaust passage 103 and is discharged to the outdoor space through the second outlet port 101d.
- the first blower 109a When the ventilation system 1 operates in heat exchanger cleaning mode, the first blower 109a may operate and the second blower 109b may be stopped. That is, in the heat exchanger cleaning mode, the flow of air through the exhaust passage 103 may not occur. In the heat exchanger cleaning mode, a first flow path that is the intake flow path 102 or a second flow path that is a circulation flow path of indoor air (RA) may be formed.
- RA indoor air
- the ventilation system 1 operates the compressor 210 to form frost on the heat exchangers 120 and 130 in a heat exchanger cleaning mode. As a result, the air passing through the heat exchangers 120 and 130 is cooled.
- the amount of frost formed in the heat exchangers (120, 130) is insufficient. If the amount of frost is insufficient, the cleaning effect of the heat exchanger (120, 130) may be reduced.
- a method of increasing the freezing time to form frost can be used.
- Increasing the freezing time for forming frost means increasing the operating time of the outdoor unit 200.
- the operating time of the outdoor unit 200 can be increased.
- a method of increasing the freezing rate of the heat exchangers 120 and 130 may also be used. If the target temperature for the temperature of the heat exchangers 120, 130 is fixed, the ventilation system 1 can increase the freezing rate of the heat exchangers 120, 130. To increase the freezing rate, the ventilation system 1 may increase the first rotational speed of the compressor 210 included in the outdoor unit 200 and the second rotational speed of the first blower 109a. As the first rotational speed of the compressor 210 increases, the amount of refrigerant supplied to the heat exchangers 120 and 130 increases. When the second rotation speed of the first blower 109a increases, the amount of air supplied to the heat exchangers 120 and 130 increases. Therefore, the freezing speed may accelerate.
- the humidity of the air flowing into the heat exchangers (120, 130) is higher than a predetermined reference humidity range, more frost may be formed than the amount of frost required for cleaning the heat exchangers (120, 130).
- the operating time of the outdoor unit 200 may be reduced by increasing the target temperature of the heat exchangers 120 and 130.
- the freezing rate is reduced by reducing the first rotational speed of the compressor 210 and the second rotational speed of the first blower 109a. may decrease.
- FIG. 5 is an exploded perspective view of a ventilation device according to one embodiment.
- Figure 6 is a perspective view from below with some components of the ventilation device according to one embodiment removed.
- FIG. 7 is a view of the first inner housing of the ventilation device shown in FIG. 5 turned upside down.
- FIG. 8 is a view of the second inner housing of the ventilation device shown in FIG. 5 turned upside down.
- the ventilation device 100 may include a drain tray 125 that collects condensate generated from the heat exchangers 120 and 130.
- the drain tray 125 may be disposed below the heat exchangers 120 and 130 in the vertical direction (Z).
- the housing 101 may include a first inner housing 310 and a second inner housing 320.
- the second inner housing 320 may be coupled to the first inner housing 310 in the vertical direction (Z).
- the inner housings 310 and 320 may be made of an insulating material.
- the inner housings 310 and 320 may be made of EPS insulation such as Styrofoam.
- the present invention is not limited to this, and the internal housings 310 and 320 may be formed of various insulating materials provided to maintain the temperature of the air flowing through the intake passage 102 and the exhaust passage 103 at a constant temperature.
- the ventilation device 100 may include covers 410 and 420 that form the exterior of the housing 101 and cover the inner housings 310 and 320.
- the covers 410 and 420 include a first cover 410 disposed below in the vertical direction (Z), and a second cover 420 disposed on top of the first cover 410 and coupled to the first cover 410. ) may include.
- the first cover 410 may form the lower exterior of the ventilation device 100
- the second cover 420 may form the upper exterior of the ventilation device 100.
- the covers 410 and 420 may cover the inner housings 310 and 320 to protect the inner housings 310 and 320 from the outside.
- the covers 410 and 420 may be made of an injection-molded material such as plastic.
- the first inner housing 310 may be inserted into the first cover 410, and the second inner housing 320 may be inserted into the second cover 420. From the bottom to the top of the ventilation device 100, the first cover 410, the first inner housing 310, the second inner housing 320, and the second cover 420 may be sequentially arranged.
- Components of the ventilation device 100 such as the total heat exchanger 110, filter 112, blowers 109a, 109b, heat exchangers 120, 130, and drain tray 125, are included in the first internal housing 310 and /Or it may be arranged to be supported by the second internal housing 320.
- a first hole 315 may be provided in the first internal housing 310.
- the total heat exchanger 110, filter 112, and drain tray 125 may be provided to be separable from the ventilation device 100 through the first hole 315 of the first internal housing 310.
- the second inner housing 320 may include a second hole 325 provided to correspond to the first hole 315 of the first inner housing 310.
- the first cover 410 includes a body portion 411 in the shape of a square frame, a face portion 412 that is detachably coupled to the body portion 411 and is provided in a plate shape, and is provided to cover the face portion 412 from the bottom. It may include a lower cover portion 413.
- the surface portion 412 of the first cover 410 may include a plate body 412a, a first surface 412b of the plate body 412a, and a second surface disposed on the opposite side of the first surface 412b. You can.
- the surface portion 412 of the first cover 410 may include a third hole 412d provided to correspond to the first hole 315 of the first inner housing 310.
- the third hole 412d may be formed on the plate body 412a. Since the third hole 412d is provided to correspond to the first hole 315, it is provided asymmetrically on the plate body 412a about one of the long axis (L) and short axis (S) of the housing 101. It can be.
- the surface portion 412 of the first cover 410 may be coupled to the body portion 411 such that the first surface 412b faces downward.
- the first hole 315 and the third hole 412d may have the same shape and may be arranged to overlap in the vertical direction (Z).
- the first internal housing 310 has a first inlet forming portion 311 forming part of the first inlet 101a, and a first outlet forming part 311 forming a part of the first outlet 101b. It may include part 312, a second inlet forming part 313 forming part of the second inlet 101c, and a second outlet forming part 314 forming part of the second outlet 101d. .
- the first outlet forming part 312 and the second outlet forming part 314 may be provided to be symmetrical to each other about the long axis L of the ventilation device 100.
- the first inlet forming part 311 and the second inlet forming part 313 may also be provided to be symmetrical to each other about the long axis L of the ventilation device 100.
- the first hole 315 through which the total heat exchanger 110, the filter 112, and the drain tray 125 are pulled out is the first area 315a through which the total heat exchanger 110, the filter 112 is pulled out, and the drain tray. It may be divided into a second area 315b where 125 is drawn out.
- the first area 315a and the second area 315b of the first hole 315 are shown as connected to each other, but this is not limited to this, and the first area 315a and the second area 315b are connected to each other. It may be separated.
- the total heat exchanger 110 may have a hexahedral shape.
- the total heat exchanger 110 is provided to have a square cross-section, and the filter 112 is disposed adjacent to the intake inlet end 110a of the total heat exchanger 110, so that the first area 315a of the first hole 315 ) can be provided in a rectangular shape.
- the total heat exchanger 110 and the filter 112 may be exposed to the outside through the first area 315a of the first hole 315.
- the second area 315b of the first hole 315 may be provided in a shape corresponding to the shape of the drain tray 125.
- the second area 315b may be formed as a polygon, but is not limited to this and may have various shapes.
- the second internal housing 320 has a first inlet forming portion 321 forming part of the first inlet 101a and a first outlet forming part 321 forming a part of the first outlet 101b. It may include part 322, a second inlet forming part 323 forming part of the second inlet 101c, and a second outlet forming part 324 forming part of the second outlet 101d. .
- the first outlet forming part 322 and the second outlet forming part 324 may be provided to be symmetrical to each other.
- the first inlet forming part 321 and the second inlet forming part 323 may also be provided to be symmetrical to each other.
- the first inner housing 310 and the second inner housing 320 are assembled in the vertical direction (Z) to form a first inlet (101a), a first outlet (101b), a second inlet (101c), and a second outlet (101d). ) can be formed.
- ) can be formed.
- one side 316 of the first inner housing 310 and the other side 326 of the second inner housing 320 are arranged in parallel, the first hole 315 and the second hole 315 of the first inner housing 310
- the second hole 325 of the inner housing 320 is also parallel.
- the side on which the first inlet 101a and the second outlet 101d are arranged in the front-back direction (X) is referred to as one side of the housing 101, and the side on which the second inlet 101c and the first outlet 101b are arranged is referred to as one side of the housing 101.
- the total heat exchanger 110 may be placed adjacent to one side of the housing 101. Since the heat exchangers (120, 130) are disposed adjacent to the first outlet (101b) and the first blower (109a) within the second intake chamber (105), in order to secure the space of the second intake chamber (105) as much as possible. The total heat exchanger 110 may be placed closest to the first suction port 101a.
- the first intake chamber 104, the second intake chamber 105, the first exhaust chamber 106, and the second exhaust chamber 107 are formed by the first inner housing 310 and the second inner housing 320. It can be partitioned by partition walls 108. Additionally, the partition walls 108 may serve to support the total heat exchanger 110.
- the partition wall 108 dividing the first exhaust chamber 105 and the second intake chamber 106 is formed by the partition wall forming part 317 of the first inner housing 310 and the partition wall forming part (320) of the second inner housing 320. 327).
- the connection passage 102a may be formed by cutting at least a portion of the partition wall.
- FIG 9 shows an integrated air conditioning system including a ventilation device according to one embodiment.
- the integrated air conditioning system 2 may include a ventilation device 100, an outdoor unit 200, a plurality of indoor units 30 (30a, 30b, 30c, 30d), and an integrated controller 50.
- the ventilation device 100 may be connected to the outdoor unit 200 through a refrigerant pipe (P1).
- the refrigerant pipe (P1) may correspond to the first refrigerant pipe 121 described above.
- the plurality of indoor units 30 may be connected to the outdoor unit 200 through a refrigerant pipe (P2).
- the outdoor unit 200 may supply refrigerant to each of the plurality of indoor units 30 through the refrigerant pipe P2.
- a plurality of indoor units 30 may be installed inside each of a plurality of different indoor spaces.
- the plurality of indoor units 30 may be installed inside a plurality of offices, a plurality of guest rooms, or a plurality of rooms divided inside a building.
- the air in the indoor space where each of the plurality of indoor units 30 is installed may be directly conditioned (eg, cooled).
- the ventilation device 100 may be installed in various spaces inside a building.
- the ventilation device 100 may be installed in a space such as a veranda or utility room of an apartment.
- the first inlet 101a, the second inlet 101c, the first outlet 101b, and the second outlet 101d provided in the housing 101 of the ventilation device 100 may each be connected to a duct.
- the duct connected to the second intake port 101c and the first outlet 101b may extend into the indoor space.
- a hole communicating with the ventilation device 100 may be provided on the ceiling or wall of the indoor space.
- the duct connected to the first inlet 101a and the second outlet 101d may extend to the outdoor space.
- the integrated controller 50 may be electrically connected to the ventilation device 100, the outdoor unit 200, and a plurality of indoor units 30.
- the integrated controller 50 may be electrically connected to the ventilation device 100, the outdoor unit 200, and the plurality of indoor units 30 through a communication line CL.
- the integrated controller 50 may control the operation of the ventilation device 100, the outdoor unit 200, and the plurality of indoor units 30.
- the integrated controller 50 can obtain user input, operate the integrated air conditioning system 2 in response to the user input, and display information about the integrated air conditioning system 2.
- the integrated controller 50 may control the ventilation device 100 and the indoor unit 30 based on the indoor temperature and indoor humidity of the indoor space where the indoor unit 30 is placed. By appropriately controlling the operations of the ventilation device 100 and the indoor unit 30, cooling efficiency and dehumidification efficiency can be improved, and energy for cooling and dehumidification can be saved.
- refrigerant can be supplied to the ventilation device 100 and the plurality of indoor units 30 using one outdoor unit 200.
- the number of ventilation devices 100, outdoor units 200, and indoor units 30 is not limited to those illustrated.
- the control method of the ventilation system 1 can also be used in the integrated air conditioning system 2 illustrated in FIG. 9 .
- Figure 10 is a control block diagram of configurations of a ventilation device according to one embodiment.
- the ventilation device 100 includes a first blower 109a, a second blower 109b, a first sterilization device 111, a second sterilization device 112, a temperature sensor 142, and a heat exchanger. It may include a temperature sensor 144, a humidity sensor 150, a first expansion device 160, and a second expansion device 170. Additionally, the ventilation device 100 may include a user interface 180, a memory 191, a communication interface 192, a processor 193, a first damper 330, and a second damper 340. The processor 193 may be electrically connected to the components of the ventilation device 100 and may control each component.
- the processor 193 may control the first expansion device 160 to selectively expand the refrigerant supplied to the first heat exchanger 120 through the first refrigerant pipe 121.
- the processor 193 controls the second expansion device 170 to selectively expand the refrigerant discharged from the first heat exchanger 120 and supplied to the second heat exchanger 130 through the second refrigerant pipe 131. can do.
- the user interface 180 may obtain various user inputs regarding the operation of the ventilation device 100.
- the user interface 180 may output an electrical signal (voltage or current) corresponding to the user input to the processor 193 of the ventilation device 100.
- User interface 180 may include various buttons, dials, and/or displays.
- the display of user interface 180 may display information regarding the operation of ventilation system 1 .
- the user interface 180 may obtain a command to execute a heat exchanger cleaning mode.
- the processor 193 may drive the ventilation system 1 in the heat exchanger cleaning mode based on the execution command of the heat exchanger cleaning mode.
- User interface 180 may obtain user input to adjust the heat exchanger cleaning schedule.
- the heat exchanger cleaning schedule may be predetermined depending on the design.
- the processor 193 may periodically perform a heat exchanger cleaning operation based on the heat exchanger cleaning schedule.
- the memory 191 can remember/store various information necessary for the operation of the ventilation system 1.
- the memory 191 may store instructions, applications, data and/or programs necessary for the operation of the ventilation system 1.
- the processor 193 may generate a control signal for controlling the operation of the ventilation system 1 based on instructions, applications, data and/or programs stored in the memory 191.
- the communication interface 192 may communicate with the outdoor unit 200, the indoor unit 30, and/or the integrated controller 50.
- the ventilation device 100 may operate based on a control signal transmitted from the integrated controller 50 through the communication interface 192. Additionally, the processor 193 of the ventilation device 100 may generate a control signal for operating the outdoor unit 200 and transmit the control signal to the outdoor unit 200 through the communication interface 192.
- the heat exchangers 120 and 130 may become contaminated during cumulative use of the ventilation device 100 .
- cleaning of the heat exchangers (120, 130) is required.
- the disclosed ventilation system 1 can clean the heat exchangers 120 and 130 of the ventilation device 100 by forming frost on the heat exchangers 120 and 130 and then melting them.
- the disclosed ventilation system 1 can appropriately select an air flow path for easily forming frost in the heat exchangers 120 and 130, and can appropriately adjust the freezing time for the formation of frost. Additionally, the disclosed ventilation system 1 may appropriately adjust the freezing rate of the heat exchangers 120 and 130.
- the processor 193 In response to entering the heat exchanger cleaning mode, the processor 193 operates a first flow path or A plurality of dampers 330 and 340 and a first blower 109a are used to form a second flow path that guides the indoor air (RA) sucked through the second intake port 101c to the heat exchanger 120 and 130. and the second blower (109b) can be controlled.
- a first flow path or A plurality of dampers 330 and 340 and a first blower 109a are used to form a second flow path that guides the indoor air (RA) sucked through the second intake port 101c to the heat exchanger 120 and 130. and the second blower (109b) can be controlled.
- the processor 193 may open the first damper 330 to open the first intake port 101a and close the second damper 340 to close the connection flow path 102b. there is.
- the processor 193 may close the first damper 330 to close the first intake port 101a and open the second damper 340 to open the connection flow path 102b. there is.
- the processor 193 installs a plurality of dampers 330 and 340 so that the first flow path and the second flow path are formed alternately for a predetermined time (for example, 30 seconds). can be controlled.
- the temperature sensor 142 can detect the temperature of air flowing into the heat exchangers 120 and 130.
- the temperature sensor 142 may also be referred to as a ‘first temperature sensor’.
- the temperature sensor 142 may detect the first temperature of the outdoor air (OA) flowing into the heat exchangers 120 and 130 through the first flow path, which is the intake flow path 102.
- the temperature sensor 142 may detect the second temperature of the indoor air (RA) flowing into the heat exchangers 120 and 130 through the second flow path.
- Heat exchanger temperature sensor 144 may detect the temperature of heat exchangers 120 and 130.
- the heat exchanger temperature sensor 144 may also be referred to as a 'second temperature sensor'.
- the humidity sensor 150 can measure the relative humidity of air flowing into the heat exchangers 120 and 130.
- the humidity sensor 150 may detect the first relative humidity of the outdoor air (OA) flowing into the heat exchangers 120 and 130 through the first flow path, which is the intake flow path 102.
- the humidity sensor 150 may detect the second relative humidity of the indoor air (RA) flowing into the heat exchangers 120 and 130 through the second flow path.
- the processor 193 may calculate the first absolute humidity of the outdoor air (OA) based on the first temperature and first relative humidity of the outdoor air (OA) flowing through the first flow path.
- the processor 193 may calculate the second absolute humidity of the indoor air (RA) based on the second temperature and the second relative humidity of the indoor air (RA) flowing through the second flow path.
- the processor 193 may select one of the first flow path and the second flow path based on comparing the first absolute humidity and the second absolute humidity. That is, the first flow path or the second flow path may be used for cleaning the heat exchangers (120, 130).
- the processor 193 may select the first flow path based on the first absolute humidity of the outdoor air (OA) being higher than or equal to the second absolute humidity of the indoor air (RA).
- the processor 193 may select the second flow path based on the first absolute humidity of the outdoor air (OA) being lower than the second absolute humidity of the indoor air (RA).
- the processor 193 may control the display of the user interface 180 to display flow path information regarding selection of one of the first flow path and the second flow path.
- the processor 193 drives the outdoor unit 200 to form frost on the heat exchangers 120 and 130 in the heat exchanger cleaning mode, and sets a predetermined freezing end condition to thaw the frost formed on the heat exchangers 120 and 130. Based on this, the operation of the outdoor unit 200 can be stopped.
- the processor 193 controls the display of the user interface 180 to display the predicted time required to complete cleaning of the heat exchangers 120 and 130 after the operation of the outdoor unit 200 is stopped based on the freezing end condition. You can.
- the freezing end condition is that the operating time of the outdoor unit 200 reaches a predetermined time limit (for example, 20 minutes) or the third temperature of the heat exchangers 120 and 130 reaches the target temperature.
- the processor 193 may determine to stop operation of the outdoor unit 200 based on the temperature detected by the heat exchanger temperature sensor 144 being lower than or equal to the target temperature.
- the processor 193 may determine to stop driving the outdoor unit 200 based on the operating time of the outdoor unit 200 elapses a predetermined time limit after entering the heat exchanger cleaning mode.
- the processor 193 may determine a target temperature for the temperatures of the heat exchangers 120 and 130 based on a predetermined correlation function.
- the processor 193 may calculate a target temperature for the temperatures of the heat exchangers 120 and 130 based on entering the heat exchanger cleaning mode.
- the processor 193 may calculate the target temperature of the heat exchangers 120 and 130 based on the selection of the first flow path or the second flow path.
- the correlation function includes the temperature and relative humidity of the air flowing into the heat exchanger (120, 130) as variables.
- the correlation function may include the first temperature and first relative humidity of the outdoor air (OA) supplied to the heat exchangers 120 and 130 as variables.
- the correlation function may include the second temperature and second relative humidity of the indoor air (RA) supplied to the heat exchangers 120 and 130 as variables.
- the target temperature is calculated.
- the correlation function can be defined as Equation 1 below. Equation 1 is just an example.
- the correlation function may be defined by various mathematical equations depending on the specifications of the ventilation device 100.
- the operating time of the outdoor unit 200 may be adjusted. If the target temperature of the heat exchangers 120 and 130 is lowered, the operating time of the outdoor unit 200 may increase. This is because it takes more time for the temperature of the heat exchangers 120 and 130 to decrease to the target temperature. Conversely, if the target temperature of the heat exchangers 120 and 130 increases, the operating time of the outdoor unit 200 may decrease. Since frost must be formed in the heat exchangers 120 and 130, the target temperature may be determined to be lower than a predetermined critical temperature (eg, -5°C).
- a predetermined critical temperature eg, -5°C
- the target temperature for the temperature of the heat exchangers 120 and 130 may be fixed when designing the ventilation device 100.
- the freezing rate of the heat exchangers 120 and 130 may be adjusted.
- the first rotational speed of the compressor 210 and the second rotational speed of the first blower 109a may be adjusted.
- the freezing speed may accelerate. Conversely, when the first rotational speed of the compressor 210 and the second rotational speed of the first blower 109a decrease, the freezing speed may be slowed.
- the processor 193 operates the compressor 210 included in the outdoor unit 200 based on the first relative humidity of the outdoor air (OA) or the second relative humidity of the indoor air (RA) supplied to the heat exchangers 120 and 130.
- the first rotation speed and the second rotation speed of the first blower 109a may be determined.
- the processor 193 may perform a first rotation of the compressor 210 based on whether the first relative humidity of the outdoor air (OA) or the second relative humidity of the indoor air (RA) is higher than a predetermined reference humidity range.
- the speed and the second rotation speed of the first blower 109a may be reduced.
- the processor 193 may configure the first relative humidity of the compressor 210 based on the first relative humidity of the outdoor air (OA) or the second relative humidity of the indoor air (RA) being lower than a predetermined reference humidity range.
- the rotation speed and the second rotation speed of the first blower 109a can be increased.
- the processor 193 may operate the first blower 109a and stop the second blower 109b.
- the first blower 109a may be operated.
- the processor 193 may stop the operation of the first blower 109a until the frost melts.
- the processor 193 may operate the first blower 109a again to remove moisture remaining after the frost melts.
- Figure 11 is a control block diagram of configurations of an integrated controller according to an embodiment.
- the integrated controller 50 may include a display 51, an input unit 52, a communication interface 53, and a memory 54, and includes a processor 55 electrically connected to them. can do.
- the integrated controller 50 may provide a user interface for interaction between the integrated air conditioning system 2 and the user.
- the display 51 may display information regarding the status and/or operation of the integrated air conditioning system 2.
- the display 51 can display information input by the user or information provided to the user on various screens.
- the display 51 may display information related to the operation of the integrated air conditioning system 2 as at least one of an image or text.
- the display 51 may display a graphic user interface (GUI) that enables control of the integrated air conditioning system 2. That is, the display 51 can display a UI element (User Interface Element) such as an icon.
- GUI graphic user interface
- the display 51 may include various types of display panels.
- the display 54 may include a liquid crystal display panel (LCD Panel), a light emitting diode panel (LED Panel), an organic light emitting diode panel (OLED Panel), Alternatively, it may include a micro LED panel.
- LCD Panel liquid crystal display panel
- LED Panel light emitting diode panel
- OLED Panel organic light emitting diode panel
- the display 54 may include a micro LED panel.
- the display 51 may be implemented as a touch display.
- the touch display may include a display panel that displays an image and a touch panel that receives touch input.
- the display panel can convert the image data received from the processor 55 into optical signals that can be viewed by the user.
- the touch panel can identify the user's touch input and provide an electrical signal corresponding to the received touch input to the processor 55.
- the input unit 52 of the integrated controller 50 may output an electrical signal (voltage or current) corresponding to user input to the processor 55.
- the input unit 52 may include various buttons and may include a dial.
- a separate input unit 52 may not be provided in the integrated controller 50. That is, the integrated controller 50 can obtain user input.
- the integrated controller 50 provides user input to turn on or off each of the ventilation device 100 and the indoor unit 30, or user input to set each operation mode of the ventilation device 100 and the indoor unit 30. can be obtained.
- the communication interface 53 can communicate with the ventilation device 100, the outdoor unit 200, and the indoor unit 30.
- the communication interface 53 of the integrated controller 50 may be connected to the communication interfaces of each of the ventilation device 100, the outdoor unit 200, and the indoor unit 30 through a communication line CL.
- the integrated controller 50 may transmit control signals to the ventilation device 100, the outdoor unit 200, and the indoor unit 30 through the communication interface 53.
- the communication interface 53 may include a wired communication module and/or a wireless communication module for communicating with an external device (eg, a mobile device, a computer).
- the wired communication module can communicate with external devices through a wide area network such as the Internet, and the wireless communication module can communicate with external devices through an access point connected to the wide area network. Through this, the user can remotely control the integrated air conditioning system (2).
- the memory 54 can remember/store various information necessary for the operation of the integrated air conditioning system 2.
- the memory 54 may store instructions, applications, data, and/or programs necessary for the operation of the integrated air conditioning system 2.
- the memory 54 may store data regarding the reference temperature and reference humidity for determining the operation of the ventilation device 100 and the indoor unit 30.
- the memory 54 may include volatile memory such as Static Random Access Memory (S-RAM) or Dynamic Random Access Memory (D-RAM) for temporarily storing data. Additionally, the memory 540 includes non-volatile memory such as Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), or Electrically Erasable Programmable Read Only Memory (EEPROM) for long-term storage of data. It can be included.
- volatile memory such as Static Random Access Memory (S-RAM) or Dynamic Random Access Memory (D-RAM) for temporarily storing data.
- D-RAM Dynamic Random Access Memory
- EEPROM Electrically Erasable Programmable Read Only Memory
- the processor 55 may generate a control signal for controlling the operation of the integrated air conditioning system 2 based on instructions, applications, data, and/or programs stored in the memory 54.
- the processor 55 is hardware and may include logic circuits and arithmetic circuits.
- the processor 55 may process data according to programs and/or instructions provided from the memory 54 and generate control signals according to the processing results.
- the memory 54 and the processor 55 may be implemented as one control circuit or as a plurality of circuits.
- the components of the ventilation device 100, the outdoor unit 200, the indoor unit 30, and the integrated controller 50 are not limited to those described in FIGS. 10 and 11. Some of the components of the ventilation device 100, outdoor unit 200, indoor unit 30, and integrated controller 50 described above may be omitted, or other components may be added.
- Figure 12 is a flowchart explaining a control method of a ventilation system according to an embodiment.
- the ventilation system 1 may operate in a heat exchanger cleaning mode (1201).
- the processor 193 of the ventilation system 1 may enter the heat exchanger cleaning mode based on user input obtained through the user interface 180.
- the processor 193 may enter the heat exchanger cleaning mode based on a previously requested heat exchanger cleaning schedule.
- the processor 193 of the ventilation system 1 operates a plurality of dampers 330 and 340 to allow air to flow into the heat exchangers 120 and 130.
- 1 blower (109a) and the second blower (109b) can be controlled (1202).
- the processor 193 guides the outdoor air (OA) sucked through the first intake port 101a of the housing 101 to the heat exchanger 120, 130 or the first flow path or the second intake port 101c.
- a plurality of dampers (330, 340), a first blower (109a), and a second blower (109b) are controlled. You can.
- one of the first flow path and the second flow path may be selected.
- the processor 193 may drive the outdoor unit 200 to form frost on the heat exchangers 120 and 130 in the heat exchanger cleaning mode (1203). Thereafter, the processor 193 may stop the operation of the outdoor unit 200 based on a predetermined freezing termination condition in order to thaw the frost formed in the heat exchangers 120 and 130 (1204).
- the heat exchangers (120, 130) may be cleaned through a process of forming and then melting frost on the heat exchangers (120, 130).
- FIG. 13 is a flowchart explaining in more detail the control method of the ventilation system described in FIG. 12.
- the processor 193 of the ventilation system 1 alternately operates the first flow path and the second flow path for a predetermined time (for example, 30 seconds) based on entering the heat exchanger cleaning mode.
- a plurality of dampers 330 and 340 can be controlled to be formed.
- the processor 193 opens the first damper 330, closes the second damper 340, and operates the first blower ( 109a) can be operated. Accordingly, outdoor air (OA) sucked in through the first intake port 101a may flow into the heat exchangers 120 and 130 through the first flow path.
- the temperature sensor 142 may detect the first temperature of outdoor air (OA) flowing in through the first flow path.
- the humidity sensor 150 may detect the first relative humidity of outdoor air (OA) flowing in through the first flow path.
- the processor 193 may calculate the first absolute humidity of the outdoor air (OA) based on the first temperature and the first relative humidity of the outdoor air (OA) (1302).
- the processor 193 closes the first damper 330, opens the second damper 340, and The blower 109a can be operated. Accordingly, indoor air (RA) sucked through the second intake port 101c may flow into the heat exchangers 120 and 130 through the second flow path.
- the temperature sensor 142 may detect the second temperature of indoor air (RA) flowing in through the second flow path.
- the humidity sensor 150 may detect the second relative humidity of indoor air (RA) flowing in through the second flow path.
- the processor 193 may calculate the second absolute humidity of the indoor air (RA) based on the second temperature and the second relative humidity of the indoor air (RA) (1303).
- the processor 193 may select one of the first flow path and the second flow path based on comparing the first absolute humidity and the second absolute humidity.
- the processor 193 may select the first flow path based on the first absolute humidity of the outdoor air (OA) being higher than or equal to the second absolute humidity of the indoor air (RA) (1304, 1305).
- the processor 193 may control the plurality of dampers 330 and 340 to supply air to the heat exchangers 120 and 130 through the first flow path to form frost in the heat exchangers 120 and 130.
- the processor 193 may select the second flow path based on the first absolute humidity of the outdoor air (OA) being lower than the second absolute humidity of the indoor air (RA) (1304, 1306).
- the processor 193 may control the plurality of dampers 330 and 340 to supply air to the heat exchangers 120 and 130 through the second flow path to form frost in the heat exchangers 120 and 130.
- the processor 193 may determine a target temperature for the temperatures of the heat exchangers 120 and 130 (1307).
- the processor 193 may calculate the target temperature of the heat exchangers 120 and 130 based on the selection of the first flow path or the second flow path.
- the processor 193 may determine a target temperature for the temperature of the heat exchangers 120 and 130 based on the temperature of the air flowing into the heat exchangers 120 and 130, the relative humidity of the air, and a predetermined correlation function.
- the processor 193 may drive the outdoor unit 200 to form frost in the heat exchangers 120 and 130 (1308). Until the outdoor unit 200 stops operating, the rotational speed of the compressor 210 may be maintained constant. The rotation speed of the first blower 109a may also be maintained constant. As frost forms in the heat exchangers 120 and 130, the temperature of the heat exchangers 120 and 130 decreases. When the temperature of the heat exchangers 120 and 130 decreases and reaches the target temperature, the processor 193 may stop the operation of the outdoor unit 200 (1309, 1311).
- the processor 193 operates the outdoor unit 200 when the operating time of the outdoor unit 200 elapses a predetermined time limit (for example, 20 minutes). The operation of can be stopped (1310, 1311).
- FIG. 14 is a flowchart of some steps changed in the control method of the ventilation system described in FIG. 13.
- the target temperature of the heat exchangers 120 and 130 may be fixed when designing the ventilation device 100.
- the freezing rate of the heat exchangers 120 and 130 may be adjusted.
- the first rotational speed of the compressor 210 and the second rotational speed of the first blower 109a may be adjusted.
- the processor 193 flows into the heat exchangers 120 and 130 through the first flow path or the second flow path.
- the humidity sensor 150 can be controlled to detect the relative humidity of the air (1401).
- the processor 193 sets the first rotation speed of the compressor 210 to the first predetermined reference speed and the second rotation speed of the first blower 109a.
- the speed can be set to a predetermined second reference speed (1403).
- the processor 193 may reduce the first rotational speed of the compressor 210 and the second rotational speed of the first blower 109a based on the detected relative humidity of the air being higher than the predetermined reference humidity range.
- the processor 193 may increase the first rotational speed of the compressor 210 and the second rotational speed of the first blower 109a based on the detected relative humidity of the air being lower than the predetermined reference humidity range ( 1404).
- the disclosed ventilation system can clean the heat exchanger by forming frost on the heat exchanger inside the ventilation device and then thawing the frost.
- the disclosed ventilation system can effectively clean the heat exchanger by selectively changing the flow path of air flowing into the heat exchanger.
- the disclosed ventilation system can prevent poor cleaning of the heat exchanger by appropriately setting conditions for terminating the cleaning of the heat exchanger, and can also prevent unnecessary energy consumption.
- the disclosed embodiments may be implemented in the form of a storage medium that stores instructions executable by a computer. Instructions may be stored in the form of program code, and when executed by a processor, may create program modules to perform operations of the disclosed embodiments.
- a storage medium that can be read by a device may be provided in the form of a non-transitory storage medium.
- 'non-transitory storage medium' only means that it is a tangible device and does not contain signals (e.g. electromagnetic waves). This term refers to cases where data is semi-permanently stored in a storage medium and temporary storage media. It does not distinguish between cases where it is stored as .
- a 'non-transitory storage medium' may include a buffer where data is temporarily stored.
- Computer program products are commodities and can be traded between sellers and buyers.
- the computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)) or through an application store (e.g. Play StoreTM) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smartphones) or online.
- a machine-readable storage medium e.g. compact disc read only memory (CD-ROM)
- an application store e.g. Play StoreTM
- two user devices e.g. It can be distributed (e.g. downloaded or uploaded) directly between smartphones) or online.
- at least a portion of the computer program product e.g., a downloadable app
- a machine-readable storage medium such as the memory of a manufacturer's server, an application store's server, or a relay server. It can be temporarily stored or created temporarily.
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Abstract
Description
Claims (15)
- 환기 장치 및 실외기를 포함하는 환기 시스템에 있어서,상기 환기 장치는제1 흡입구, 제2 흡입구, 제1 배출구 및 제2 배출구를 포함하는 하우징;상기 하우징을 통해 흐르는 공기의 유로를 변경하는 복수의 댐퍼들;상기 제1 배출구로 상기 공기를 송풍하는 제1 송풍기;상기 제2 배출구로 상기 공기를 송풍하는 제2 송풍기;상기 하우징 내에 마련되는 전열교환기;상기 하우징 내에 마련되는 열교환기; 및프로세서;를 포함하고,상기 프로세서는열교환기 세척 모드로 진입에 응답하여,상기 제1 흡입구를 통해 흡입되는 실외 공기가 상기 전열교환기를 거치고 상기 열교환기를 거쳐 상기 제1 배출구를 통해 배출되는 제1 유로를 형성하거나, 상기 제2 흡입구를 통해 흡입되는 실내 공기가 상기 전열교환기를 거치고 상기 열교환기를 거쳐 상기 제1 배출구를 통해 배출되는 제2 유로를 형성하기 위해, 상기 복수의 댐퍼들, 상기 제1 송풍기 및 상기 제2 송풍기를 제어하고, 이에 의해 상기 환기 장치 내에 유로를 형성하고,상기 환기 장치 내에 형성된 상기 유로를 통해 공기가 흐르는 동안, 상기 열교환기에 서리를 형성하기 위해 동작하도록 상기 실외기를 제어하고,상기 서리를 녹여 상기 열교환기를 세척하기 위해 미리 정해진 동결 종료 조건에 기초하여 동작 정지하도록 상기 실외기를 제어하는 환기 시스템.
- 제1항에 있어서,상기 복수의 댐퍼들은상기 제1 흡입구를 개방 및 폐쇄하는 제1 댐퍼; 및상기 제1 흡입구와 상기 제2 흡입구 사이에 형성되는 연결 유로를 개방 및 폐쇄하는 제2 댐퍼;를 포함하고,상기 프로세서는상기 제1 유로의 형성을 위해, 상기 제1 흡입구를 개방하도록 상기 제1 댐퍼를 제어하고, 상기 연결 유로를 폐쇄하도록 상기 제2 댐퍼를 제어하고, 상기 제1송풍기를 동작시키거나,상기 제2 유로의 형성을 위해, 상기 제1 흡입구를 폐쇄하도록 상기 제1 댐퍼를 제어하고, 상기 연결 유로를 개방하도록 상기 제2 댐퍼를 제어하고, 상기 제1 송풍기를 동작시키는 환기 시스템.
- 제1항에 있어서,상기 환기 장치는상기 제1 유로를 통해 유입되는 상기 실외 공기의 온도를 검출하거나, 상기 제2 유로를 통해 유입되는 상기 실내 공기의 온도를 검출하는 온도 센서; 및상기 제1 유로를 통해 유입되는 상기 실외 공기의 상대 습도를 검출하거나, 상기 제2 유로를 통해 유입되는 상기 실내 공기의 상대 습도를 검출하는 습도 센서;를 더 포함하는 환기 시스템.
- 제3항에 있어서,상기 프로세서는상기 열교환기 세척 모드로 진입에 응답하여, 상기 제1 유로와 상기 제2 유로가 각각 미리 정해진 시간 동안 교대로 형성되도록 상기 복수의 댐퍼들을 제어하고,상기 제1 유로를 통해 흐르는 상기 실외 공기의 상기 검출된 온도와 상기 검출된 상대 습도에 기초하여 제1 절대 습도를 산출하고,상기 제2 유로를 통해 흐르는 상기 실내 공기의 상기 검출된 온도와 상기 검출된 상대 습도에 기초하여 제2 절대 습도를 산출하고,상기 제1 절대 습도와 상기 제2 절대 습도를 비교함에 기초하여, 상기 환기 장치 내에 상기 유로를 형성하기 위해 상기 제1 유로와 상기 제2 유로 중 하나를 선택하는 환기 시스템.
- 제4항에 있어서,상기 프로세서는상기 제1 절대 습도가 상기 제2 절대 습도보다 높거나 같아지는 것에 기초하여 상기 제1 유로를 선택하거나,상기 제1 절대 습도가 상기 제2 절대 습도보다 낮아지는 것에 기초하여 상기 제2 유로를 선택하는 환기 시스템.
- 제3항에 있어서,상기 환기 장치는상기 열교환기의 온도를 검출하는 열교환기 온도 센서;를 더 포함하고,상기 동결 종료 조건은상기 실외기의 구동 시간이 미리 정해진 제한 시간에 도달하는 것 또는 상기 열교환기의 온도가 목표 온도에 도달하는 것을 포함하는 환기 시스템.
- 제6항에 있어서,상기 프로세서는상기 제1 유로를 통해 흐르는 상기 실외 공기의 검출된 온도와 검출된 상대 습도를 변수로 하거나 상기 제2 유로를 통해 흐르는 상기 실내 공기의 검출된 온도와 상기 검출된 상대 습도를 변수로 하는 미리 정해진 상관 함수에 기초하여, 상기 목표 온도를 결정하는 환기 시스템.
- 제3항에 있어서,상기 프로세서는상기 제1 유로를 통해 흐르는 상기 실외 공기의 검출된 상대 습도 또는 상기 제2 유로를 통해 흐르는 상기 실내 공기의 검출된 상대 습도에 기초하여 상기 실외기에 포함된 압축기의 회전 속도 및 상기 제1 송풍기의 회전 속도를 결정하는 환기 시스템.
- 제8항에 있어서,상기 프로세서는상기 제1 유로를 통해 흐르는 상기 실외 공기의 검출된 상대 습도 또는 상기 제2 유로를 통해 흐르는 상기 실내 공기의 검출된 상대 습도가 미리 정해진 기준 습도 범위보다 높은 것에 기초하여, 상기 압축기의 상기 회전 속도 및 상기 제1 송풍기의 상기 회전 속도를 감소시키거나,상기 제1 유로를 통해 흐르는 상기 실외 공기의 검출된 상대 습도 또는 상기 제2 유로를 통해 흐르는 상기 실내 공기의 검출된 상대 습도가 상기 미리 정해진 기준 습도 범위보다 낮은 것에 기초하여, 상기 압축기의 상기 회전 속도 및 상기 제1 송풍기의 상기 회전 속도를 증가시키는 환기 시스템.
- 제1항에 있어서,상기 환기 시스템의 동작에 관한 정보를 표시하는 디스플레이;를 더 포함하고,상기 프로세서는상기 제1 유로와 상기 제2 유로 중 하나의 선택에 관한 유로 정보를 표시하도록 상기 디스플레이를 제어하는 환기 시스템.
- 제1항에 있어서,상기 환기 시스템의 동작에 관한 정보를 표시하는 디스플레이;를 더 포함하고,상기 프로세서는상기 동결 종료 조건에 기초하여 상기 실외기가 정지된 후, 상기 열교환기의 세척 완료까지 소요되는 예측 시간을 표시하도록 상기 디스플레이를 제어하는 환기 시스템.
- 환기 장치 및 실외기를 포함하는 환기 시스템에 있어서,상기 환기 장치는제1 흡입구, 제2 흡입구, 제1 배출구 및 제2 배출구를 포함하는 하우징;상기 하우징을 통해 흐르는 공기의 유로를 변경하는 복수의 댐퍼들;상기 제1 배출구로 상기 공기를 송풍하는 제1 송풍기;상기 제2 배출구로 상기 공기를 송풍하는 제2 송풍기;상기 하우징 내에 마련되는 전열교환기;상기 하우징 내에 마련되는 열교환기;상기 열교환기의 온도를 검출하는 열교환기 온도 센서; 및프로세서;를 포함하고,상기 프로세서는열교환기 세척 모드로 진입에 응답하여,상기 공기가 상기 열교환기로 유입되도록 상기 복수의 댐퍼들, 상기 제1 송풍기 및 상기 제2 송풍기를 제어하고,상기 열교환기로 공기가 흐르는 동안, 상기 열교환기에 서리를 형성하기 위해 동작하도록 상기 실외기를 제어하고,상기 실외기의 구동 시간이 미리 정해진 제한 시간에 도달하거나 상기 열교환기의 검출된 온도가 목표 온도에 도달하는 것에 기초하여 동작 정지하도록 상기 실외기를 제어하는 환기 시스템.
- 제12항에 있어서,상기 환기 장치는상기 열교환기로 흐르는 상기 공기의 온도를 검출하는 온도 센서; 및상기 열교환기로 흐르는 상기 공기의 상대 습도를 검출하는 습도 센서;를 더 포함하고,상기 프로세서는상기 열교환기로 흐르는 상기 공기의 온도와 상기 열교환기로 흐르는 상기 공기의 상기 상대 습도를 변수로 하는 미리 정해진 상관 함수에 기초하여, 상기 목표 온도를 결정하는 환기 시스템.
- 제12항에 있어서,상기 환기 장치는상기 열교환기로 흐르는 상기 공기의 상대 습도를 검출하는 습도 센서;를 더 포함하고,상기 프로세서는상기 열교환기로 흐르는 상기 공기의 상기 검출된 상대 습도에 기초하여 상기 실외기에 포함된 압축기의 회전 속도 및 상기 제1 송풍기의 회전 속도를 결정하는 환기 시스템.
- 제14항에 있어서,상기 프로세서는상기 열교환기로 흐르는 상기 공기의 상기 상대 습도가 미리 정해진 기준 습도 범위보다 높은 것에 기초하여, 상기 압축기의 상기 회전 속도 및 상기 제1 송풍기의 상기 회전 속도를 감소시키거나,상기 열교환기로 흐르는 상기 공기의 상기 상대 습도가 상기 미리 정해진 기준 습도 범위보다 낮은 것에 기초하여, 상기 압축기의 상기 회전 속도 및 상기 제1 송풍기의 상기 회전 속도를 증가시키는 환기 시스템.
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| CN202380047483.8A CN119365732A (zh) | 2022-11-18 | 2023-08-31 | 通风系统和控制通风系统的方法 |
| EP23891777.7A EP4524488A4 (en) | 2022-11-18 | 2023-08-31 | VENTILATION SYSTEM AND ITS CONTROL METHOD |
| US18/367,855 US12523383B2 (en) | 2022-11-18 | 2023-09-13 | Ventilation system with cleaning mode and method for controlling the same |
| US19/419,670 US20260104172A1 (en) | 2022-11-18 | 2025-12-15 | Ventilation system and method for controlling the same |
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| KR1020220155765A KR20240075056A (ko) | 2022-11-18 | 2022-11-18 | 환기 시스템 및 그 제어 방법 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011127894A (ja) * | 2011-02-25 | 2011-06-30 | Sanyo Electric Co Ltd | 空気調和機 |
| WO2018198397A1 (ja) * | 2017-04-28 | 2018-11-01 | 日立ジョンソンコントロールズ空調株式会社 | 空気調和機 |
| KR102357605B1 (ko) * | 2020-10-29 | 2022-02-08 | 이영국 | 환기 장치 |
| JP2022041712A (ja) * | 2020-09-01 | 2022-03-11 | ダイキン工業株式会社 | 空気調和装置 |
| KR20220068321A (ko) * | 2020-11-18 | 2022-05-26 | 엘지전자 주식회사 | 환기장치 및 그 제어방법 |
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2022
- 2022-11-18 KR KR1020220155765A patent/KR20240075056A/ko active Pending
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011127894A (ja) * | 2011-02-25 | 2011-06-30 | Sanyo Electric Co Ltd | 空気調和機 |
| WO2018198397A1 (ja) * | 2017-04-28 | 2018-11-01 | 日立ジョンソンコントロールズ空調株式会社 | 空気調和機 |
| JP2022041712A (ja) * | 2020-09-01 | 2022-03-11 | ダイキン工業株式会社 | 空気調和装置 |
| KR102357605B1 (ko) * | 2020-10-29 | 2022-02-08 | 이영국 | 환기 장치 |
| KR20220068321A (ko) * | 2020-11-18 | 2022-05-26 | 엘지전자 주식회사 | 환기장치 및 그 제어방법 |
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