WO2017109932A1 - Entrepôt frigorifique - Google Patents

Entrepôt frigorifique Download PDF

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Publication number
WO2017109932A1
WO2017109932A1 PCT/JP2015/086204 JP2015086204W WO2017109932A1 WO 2017109932 A1 WO2017109932 A1 WO 2017109932A1 JP 2015086204 W JP2015086204 W JP 2015086204W WO 2017109932 A1 WO2017109932 A1 WO 2017109932A1
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WO
WIPO (PCT)
Prior art keywords
warehouse
introduction
refrigerant
discharge
cooling
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.)
Ceased
Application number
PCT/JP2015/086204
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English (en)
Japanese (ja)
Inventor
雄明 岡部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to CN201580084671.3A priority Critical patent/CN108431529A/zh
Priority to JP2017557616A priority patent/JP6735774B2/ja
Priority to PCT/JP2015/086204 priority patent/WO2017109932A1/fr
Priority to GB1806458.4A priority patent/GB2561097B/en
Publication of WO2017109932A1 publication Critical patent/WO2017109932A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/006—Safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel

Definitions

  • the present invention relates to a cooling warehouse that discharges a leaked refrigerant.
  • Non-Patent Document 1 As a cooling warehouse, a prefabricated refrigerator or a prefabricated freezer is known, and a person or a forklift can enter and exit.
  • the inside of the cooling warehouse is cooled by a refrigeration cycle apparatus using a refrigerant, and an indoor unit called a unit cooler is arranged inside the cooling warehouse (see Non-Patent Document 1 and Non-Patent Document 2).
  • fluorocarbon refrigerants having low combustibility and low toxicity have been used as refrigerants used in refrigeration cycle apparatuses.
  • GWP that is, a refrigerant with a low global warming potential, has attracted attention from the viewpoint of global environmental conservation.
  • the cooling warehouse has a casing made of a heat insulating panel, and the joint of the heat insulating panel is sealed, so that the airtightness is extremely high.
  • the fluorocarbon refrigerant containing a slightly flammable refrigerant has a specific gravity higher than that of air, and when the refrigerant leaks from the indoor unit, the refrigerant may stay inside the cooling warehouse.
  • Patent Document 1 discloses a cooling warehouse equipped with a refrigeration cycle apparatus that uses a low-flammable refrigerant having a low GWP. In Patent Document 1, when the refrigerant leaks, the leaked refrigerant is stored in the outdoor unit.
  • the cooling warehouse disclosed in Patent Document 1 does not have a casing made of a heat insulating panel.
  • a cooling warehouse provided with a housing formed of a heat insulating panel has extremely high airtightness, and thus it is desired to discharge the refrigerant more reliably.
  • the present invention has been made to solve the above-described problems, and provides a cooling warehouse that easily discharges a refrigerant when the refrigerant leaks in a cooling warehouse including a housing formed of a heat insulating panel. To do.
  • the cooling warehouse according to the present invention is composed of a heat insulating panel, and is provided with a warehouse body in which an introduction port for introducing outside air and a discharge port for discharging air inside the warehouse are respectively formed, and the introduction port is opened and closed. And a discharge lid that opens and closes the discharge port, a leak detection unit that is provided inside the warehouse body and detects a refrigerant leak, and a leak detection unit detects a refrigerant leak.
  • a control unit that controls the introduction lid and the discharge lid to open the introduction port and the discharge port.
  • the control unit when the leakage of the refrigerant is detected, the control unit opens the inlet and the outlet, so that the air introduced from the inlet is discharged from the outlet along with the leaked refrigerant. For this reason, even in a cooling warehouse including a warehouse main body configured with a heat insulating panel, the refrigerant can be easily discharged when the refrigerant leaks.
  • FIG. 1 is a cross-sectional view showing a cooling warehouse 100 according to Embodiment 1 of the present invention.
  • the cooling warehouse 100 will be described with reference to FIG.
  • the cooling warehouse 100 includes a warehouse body 1, an introduction lid 32 a, an introduction motor 32 b, a discharge lid 31 a, a discharge motor 31 b, a leak detection unit 41, and a control unit 42. Yes.
  • the refrigeration cycle apparatus 10 is provided in the cooling warehouse 100.
  • the warehouse body 1 is composed of a heat insulating panel 1f and is formed with an introduction port 32 and a discharge port 31.
  • the warehouse body 1 is a rectangular parallelepiped casing that forms the outer shell of the cooling warehouse 100.
  • surroundings of the warehouse main body 1 are sealed with several heat insulation panels 1f, for example, are prefabricated refrigerators.
  • the warehouse body 1 is provided with a door 1e through which a person 2 or a luggage 3 enters and exits.
  • the inlet 32 is an opening for introducing outside air into the cooling warehouse 100, and is formed on the wall surface 1b between the ceiling surface 1c of the warehouse body 1 and 1/3 of the height of the warehouse body 1, for example. Yes.
  • the introduction port 32 may be formed in the ceiling surface 1 c of the warehouse body 1.
  • the discharge port 31 is an opening for discharging the internal air to the outside of the cooling warehouse 100, and is formed on the wall surface 1b between the floor surface 1a of the warehouse body 1 and 1/3 of the height of the warehouse body 1, for example. Yes.
  • the discharge port 31 may be formed in the floor surface 1a of the warehouse body 1.
  • the introduction lid 32 a is provided at the introduction port 32 and opens and closes the introduction port 32.
  • the introduction motor 32b is provided on the introduction lid 32a and drives the introduction lid 32a to open and close.
  • the discharge lid 31 a is provided at the discharge port 31 and opens and closes the discharge port 31.
  • the discharge motor 31b is provided on the discharge lid 31a and drives the discharge lid 31a to open and close.
  • FIG. 2 is a circuit diagram showing the refrigeration cycle apparatus 10 according to Embodiment 1 of the present invention.
  • the refrigeration cycle apparatus 10 includes a refrigerant circuit in which, for example, a compressor 11, an outdoor heat exchanger 12, an expansion unit 13, and an indoor heat exchanger 14 are connected by a pipe 24, and refrigerant flows. Yes.
  • the refrigeration cycle apparatus 10 includes an outdoor unit 21 and an indoor unit 22, and the outdoor unit 21 and the indoor unit 22 are connected by a pipe 24.
  • the pipe 24 includes a pipe 24 a located outside the warehouse from the outdoor unit 21 to the warehouse main body 1 and a pipe 24 b located inside the warehouse from the warehouse main body 1 to the indoor unit 22.
  • the outdoor unit 21 is installed outside the cooling warehouse 100, and for example, the compressor 11 and the outdoor heat exchanger 12 are installed inside the outdoor unit 21.
  • the indoor unit 22 is installed inside the cooling warehouse 100, and for example, the expansion unit 13 and the indoor heat exchanger 14 are installed inside the indoor unit 22.
  • the compressor 11 compresses the refrigerant.
  • the outdoor heat exchanger 12 condenses the refrigerant by exchanging heat between the outdoor air and the refrigerant.
  • the expansion part 13 expands and depressurizes the refrigerant.
  • the indoor heat exchanger 14 evaporates the refrigerant by exchanging heat between the indoor air and the refrigerant.
  • coolant used for the refrigerating-cycle apparatus 10 is a slightly combustible refrigerant
  • the indoor unit 22 is installed in the ceiling surface 1c inside the cooling warehouse 100, the installation location may be the wall surface 1b or the floor surface 1a. Further, in the first embodiment, two indoor units 22 are installed, but the number of installed units may be one or three or more.
  • the refrigerant is sucked into the compressor 11 of the outdoor unit 21, compressed by the compressor 11, and discharged in the state of high-temperature and high-pressure gas.
  • the discharged refrigerant flows into the outdoor heat exchanger 12.
  • the refrigerant that has flowed into the outdoor heat exchanger 12 is condensed by exchanging heat with outdoor air.
  • the condensed refrigerant flows into the expansion unit 13 of each indoor unit 22 and is expanded and depressurized by the expansion unit 13.
  • the decompressed refrigerant flows into the indoor heat exchanger 14.
  • the refrigerant that has flowed into the indoor heat exchanger 14 is heat-exchanged with the indoor air and evaporated.
  • a flow path switching device may be provided. In this case, heating operation can also be performed.
  • the leakage detection unit 41 is provided inside the warehouse body 1 and detects refrigerant leakage.
  • the leak detection unit 41 is provided, for example, in a space between the floor surface 1a of the warehouse body 1 and 1/3 of the height of the warehouse body 1. Thereby, when the specific gravity of a refrigerant
  • the leak detection part 41 detects the refrigerant
  • the leak detection part 41 may be provided in the space from the ceiling surface 1c of the warehouse main body 1 to 1/3 of the height of the warehouse main body 1, for example. Thereby, when the specific gravity of a refrigerant
  • the control unit 42 controls the introduction lid 32a and the discharge lid 31a to open the introduction port 32 and the discharge port 31 when the leakage of the refrigerant is detected by the leakage detection unit 41.
  • the controller 42 has contacts (not shown) connected to the introduction motor 32b and the discharge motor 31b. And when the leak detection part 41 detects the leakage of a refrigerant
  • the introduction lid 32a and the discharge lid 31a may be driven to open and close at the same time, or may be driven to open and close at different timings.
  • FIG. 3 is a cross-sectional view showing the cooling warehouse 100 according to Embodiment 1 of the present invention.
  • the control unit 42 opens the contact point connected to the introduction motor 32b and the discharge motor 31b, and stops the introduction motor 32b and the discharge motor 31b. Therefore, the introduction lid 32a and the discharge lid 31a are closed, and the introduction port 32 and the discharge port 31 are shielded.
  • the control unit 42 closes the contacts connected to the introduction motor 32b and the discharge motor 31b, and connects the introduction motor 32b and the discharge motor 31b. Make it work. Therefore, the introduction lid 32a and the discharge lid 31a are opened, and the introduction port 32 and the discharge port 31 are opened. At that time, the control unit 42 stops the operation of the indoor unit 22 and the outdoor unit 21.
  • the control unit 42 opens the introduction lid 32a and the discharge lid 31a so as to pass through the introduction path 71 from the introduction port 32 as shown in FIG.
  • the outside air introduced in this manner is discharged from the discharge port 31 through the discharge path 72 together with the leaked refrigerant 6.
  • the refrigerant coolant
  • coolant can be discharged
  • the refrigerant can be easily discharged without requiring complicated control such as opening and closing a plurality of valves.
  • the operation of the indoor unit 22 is stopped, the leaked refrigerant and the internal air are not stirred. Thereby, the refrigerant can be quickly discharged to the outside of the cooling warehouse 100.
  • a plurality of cooling warehouses provided with a refrigeration cycle apparatus in which a plurality of indoor units are connected to a single outdoor unit is a refrigeration cycle apparatus in which a single indoor unit is connected to an outdoor unit having the same cooling capacity.
  • the concentration of the leaking refrigerant is high.
  • the value obtained by dividing the amount of refrigerant leaking by the internal volume of the refrigerator is taken as the indoor refrigerant concentration.
  • the amount of refrigerant until the refrigerant shortage is equal.
  • the total capacity of the cooling warehouse is the same. The capacity is small. Accordingly, the indoor refrigerant concentration is higher when cooling a plurality of cooling warehouses than when cooling one cooling warehouse.
  • the concentration of the leaked refrigerant is also low. Before it becomes high, the leaked refrigerant can be discharged to the outside.
  • the introduction port 32 is formed between the ceiling surface 1c of the warehouse main body 1 and 1/3 of the height of the warehouse main body 1.
  • the discharge port 31 extends from the floor surface 1a of the warehouse main body 1 to the warehouse. It is formed up to 1/3 of the height of the main body 1.
  • the inside air is at a lower temperature than the outside air and has a high specific gravity.
  • the specific gravity of the air inside the cabinet is 1.3 kg / m 3 when the dry bulb temperature is 5 ° C. and the relative humidity is 50%, and the specific gravity of the outside air is 25 ° C. at the dry bulb temperature and 60% relative humidity. %, It is 1.2 kg / m 3 . Accordingly, the internal air has a higher specific gravity so that when the introduction port 32 and the discharge port 31 are opened, the internal air descends and is exhausted, and the external air is introduced by the amount that the internal air is lowered and discharged. 32.
  • the specific gravity of the refrigerant is about 21.0 kg / m 3 when the dry bulb temperature is 5 ° C. and the relative humidity is 50%. Therefore, the refrigerant stays in the lower part of the cooling warehouse 100 due to the specific gravity difference between the refrigerant and the air in the warehouse. Thereby, when the discharge port 31 formed in the floor surface 1a of the warehouse main body 1 or the wall surface 1b from the floor surface 1a to 1/3 of the height of the warehouse main body 1 is opened, it stays on the floor surface. Preferentially discharged from the refrigerant.
  • the refrigerant can be discharged to the outside of the cooling warehouse 100 more quickly.
  • the control unit 42 further includes an introduction motor 32b provided on the introduction lid 32a for driving the opening / closing of the introduction lid 32a, and a discharge motor 31b provided on the discharge lid 31a for driving the opening / closing of the discharge lid 31a.
  • an introduction motor 32b provided on the introduction lid 32a for driving the opening / closing of the introduction lid 32a
  • a discharge motor 31b provided on the discharge lid 31a for driving the opening / closing of the discharge lid 31a.
  • the cooling warehouse 100 of this Embodiment 1 is a prefabricated refrigerator etc. with high airtightness, for example.
  • FIG. FIG. 4 is a cross-sectional view showing a cooling warehouse 200 according to Embodiment 2 of the present invention.
  • the second embodiment is different from the first embodiment in that the cooling warehouse 200 includes a blower 51.
  • the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. The description will focus on differences from the first embodiment.
  • the blower 51 is provided at the introduction port 32 in the warehouse body 1.
  • the blower 51 is attached in such a direction that outside air is introduced into the cooling warehouse 200 from the outside of the cooling warehouse 200.
  • the introduction lid 232a is a partition wall that separates the inside of the cooling warehouse 100 from the outside of the cooling warehouse 100 while the blower 51 is stopped, and is a pressure type or an electric type.
  • the control unit 42 operates the blower 51 when leakage of the refrigerant is detected by the leakage detection unit 41.
  • FIG. 5 is a cross-sectional view showing a cooling warehouse 200 according to Embodiment 2 of the present invention.
  • the control unit 42 opens contacts connected to the introduction motor 32b, the discharge motor 31b, and the blower 51, and stops the introduction motor 32b, the discharge motor 31b, and the blower 51. Therefore, the introduction lid 32a and the discharge lid 31a are closed, and the introduction port 32 and the discharge port 31 are shielded.
  • the control unit 42 closes the contacts connected to the introduction motor 32b, the discharge motor 31b, and the blower 51, and introduces the introduction motor 32b, the discharge.
  • the electric motor 31b and the blower 51 are operated. Accordingly, the introduction lid 232a and the discharge lid 31a are opened, and the introduction port 32 and the discharge port 31 are opened. Moreover, the air blower 51 operates. At that time, the control unit 42 stops the operation of the indoor unit 22 and the outdoor unit 21.
  • the blower 51 provided at the introduction port 32 in the warehouse body 1 is further provided. And when the leakage of a refrigerant
  • the blower 51 is attached in such a direction as to introduce outside air into the cooling warehouse 100 from the outside of the cooling warehouse 100. For this reason, as shown in FIG. 5, the outside air is introduced from the introduction port 32 by the blower 51, and the inside of the cooling warehouse 100 is pressurized to a positive pressure.
  • the inside of the cabinet is kept at a positive pressure by the static pressure generated by the blower 51, and the refrigerant 6 staying on the floor surface is discharged from the discharge port 31 via the discharge path 72. Therefore, the refrigerant can be discharged more easily. Moreover, since the operation of the indoor unit 22 is stopped, the leaked refrigerant and the internal air are not stirred. Thereby, the refrigerant can be quickly discharged to the outside of the cooling warehouse 200.
  • the blower 51 may be attached in a direction to discharge the air in the warehouse from the inside of the cooling warehouse 200 to the outside of the cooling warehouse 200.
  • the specific gravity of the refrigerant is lower than the specific gravity of the internal air and the refrigerant stays in the upper part of the cooling warehouse 200
  • the outside air taken in from the discharge port 31 is stored together with the leaked refrigerant by the static pressure of the blower 51. It becomes internal air and exits from the inlet 32.
  • the introduction port 32 functions as an opening for discharging the internal air
  • the discharge port 31 functions as an opening for introducing outside air.
  • control unit 42 may be configured to operate the blower 51 with the rotation direction of the blower 51 reversed.
  • the specific gravity of the refrigerant is lower than the specific gravity of the internal air and the refrigerant stays in the upper part of the cooling warehouse 200
  • the outside air taken in from the discharge port 31 is stored together with the leaked refrigerant by the static pressure of the blower 51. It becomes internal air and exits from the inlet 32.
  • the introduction port 32 functions as an opening for discharging the internal air
  • the discharge port 31 functions as an opening for introducing outside air.
  • the blower 51 may be provided at the discharge port 31 in the warehouse body 1.
  • the blower 51 is attached in a direction to discharge the internal air from the inside of the cooling warehouse 200 to the outside of the cooling warehouse 200.
  • the specific gravity of the refrigerant is higher than the specific gravity of the air inside the warehouse and the refrigerant stays in the lower part of the inside of the cooling warehouse 200, the air inside the warehouse is quickly discharged without using the static pressure generated by the blower 51.
  • the blower 51 provided at the introduction port 32 or the discharge port 31 in the warehouse body 1, the refrigerant can be quickly discharged to the outside of the cooling warehouse 200.
  • FIG. FIG. 6 is a cross-sectional view showing a cooling warehouse 300 according to Embodiment 3 of the present invention.
  • the third embodiment is different from the second embodiment in that the discharge lid 331a is an atmospheric pressure adjusting valve.
  • the same parts as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof will be omitted. The difference from the first and second embodiments will be mainly described.
  • the discharge lid 331a is an atmospheric pressure adjusting valve, and the atmospheric pressure adjusting valve opens the outlet 31 when a difference occurs between the pressure of outside air and the pressure of inside air.
  • the pressure of the air in the warehouse may decrease and the door 1e may not open. is there.
  • the refrigeration cycle apparatus 10 performs the defrosting operation, when the heater is used to defrost, if the air heated by the heater circulates in the chamber, the pressure of the chamber air rapidly increases, and the door 1e and the cooling are performed.
  • a panel or the like provided in the warehouse 300 may be broken or deformed by pressure.
  • the air pressure adjusting valve is configured to adjust the air pressure inside the cooling warehouse 300 to prevent the door 1e from being opened and to destroy or deform the door 1e and the panel.
  • FIG. 7 is a cross-sectional view showing a cooling warehouse 300 according to Embodiment 3 of the present invention.
  • the control unit 42 opens the contact point connected to the introduction motor 32b and the blower 51, and stops the introduction motor 32b and the blower 51. Therefore, the introduction lid 32a is closed and the introduction port 32 is shielded. Further, the discharge lid 331a, which is an atmospheric pressure adjusting valve, is closed because the pressure of the outside air and the pressure of the inside air are equal, and the discharge port 31 is shielded.
  • the control unit 42 closes the contact point connected to the introduction motor 32b and the blower 51 and operates the introduction motor 32b and the blower 51. . Accordingly, the introduction lid 32a is opened and the introduction port 32 is opened. Moreover, the air blower 51 operates. When the blower 51 is operated, outside air is introduced from the inlet 32, and the inside of the cooling warehouse 300 is pressurized to a positive pressure. And the discharge lid 331a which is an atmospheric pressure adjusting valve is pushed and opened by the static pressure generated by the blower 51. Thereby, the discharge port 31 is opened. At that time, the control unit 42 stops the operation of the indoor unit 22.
  • the opening is formed in the warehouse body 1 and provided in the discharge port 31 that is the opening, and there is a difference between the pressure of the outside air and the pressure of the inside air.
  • a discharge lid 331a that opens the discharge port 31 that is an opening is further provided.
  • the discharge lid 331a is a pressure adjusting valve that opens the discharge port 31 when a difference occurs between the pressure of the outside air and the pressure of the inside air.
  • the control part 42 opens the introduction cover 32a, and operates the air blower 51, when the leakage of a refrigerant
  • the blower 51 is attached in such a direction as to introduce the outside air into the cooling warehouse 300 from the outside of the cooling warehouse 300. For this reason, as shown in FIG.
  • the outside air is introduced from the inlet 32 by the blower 51, and the inside of the cooling warehouse 300 is pressurized to a positive pressure. Further, the discharge lid 331a, which is an atmospheric pressure adjusting valve, is pushed and opened by the static pressure generated by the blower 51. Thereby, the discharge port 31 is opened.
  • the refrigerant can be discharged more easily. Moreover, since the operation of the indoor unit 22 is stopped, the leaked refrigerant and the internal air are not stirred. Thereby, the refrigerant can be quickly discharged to the outside of the cooling warehouse 300.
  • the blower 51 may be attached in such a direction as to discharge the internal air from the inside of the cooling warehouse 300 to the outside of the cooling warehouse 300.
  • the specific gravity of the refrigerant is lower than the specific gravity of the internal air and the refrigerant stays in the upper part of the cooling warehouse 300
  • the outside air taken in from the discharge port 31 is introduced by the static pressure of the blower 51 together with the leaked refrigerant. Get out of mouth 32.
  • the introduction port 32 functions as an opening for discharging the internal air
  • the discharge port 31 functions as an opening for introducing outside air.
  • the atmospheric pressure adjusting valve may be provided separately from the discharge lid, not the discharge lid 331a.
  • control unit 42 may be configured to operate the blower 51 with the rotation direction of the blower 51 reversed.
  • the specific gravity of the refrigerant is lower than the specific gravity of the air in the warehouse and the refrigerant stays in the upper part of the cooling warehouse 300
  • the outside air taken in from the discharge port 31 is stored together with the leaked refrigerant by the static pressure of the blower 51. It becomes internal air and exits from the inlet 32.
  • the introduction port 32 functions as an opening for discharging the internal air
  • the discharge port 31 functions as an opening for introducing outside air.
  • the discharge lid 331a which is a pressure adjusting valve, functions as an opening for introducing outside air.
  • the blower 51 is provided at the discharge port 31 in the warehouse body 1, and the discharge lid 331 a is an atmospheric pressure adjustment valve that opens the introduction port 32 when a difference occurs between the pressure of the outside air and the pressure of the inside air. It may be.
  • the blower 51 is attached in a direction for discharging the internal air from the inside of the cooling warehouse 300 to the outside of the cooling warehouse 300.
  • the discharge port 31 can be quickly used without stirring the air inside the warehouse using the static pressure generated by the blower 51. Discharged from.
  • the introduction lid 32a or the discharge lid 331a is an atmospheric pressure adjusting valve that opens the introduction port 32 or the discharge port 31 when a difference occurs between the pressure of the outside air and the pressure of the inside air. Thereby, it becomes unnecessary to attach the discharge lid 331a separately.
  • control unit 42 closes the contacts connected to the introduction motor 32b, the discharge motor 31b, and the blower 51, but is connected to the introduction motor 32b, the discharge motor 31b, and the blower 51.
  • the contact may be shared with the refrigerant leakage abnormality signal contact. Thereby, the contact can be used for, for example, a warning lamp lighting output or a remote abnormality signal reporting output.
  • 1 warehouse body 1a floor surface, 1b wall surface, 1c ceiling surface, 1e door, 1f heat insulation panel, 2 persons, 3 luggage, 6 refrigerant, 10 refrigeration cycle equipment, 11 compressor, 12 outdoor heat exchanger, 13 expansion section, 14 indoor heat exchanger, 21 outdoor unit, 22 indoor unit, 24, 24a, 24b piping, 31 outlet, 31a outlet lid, 31b outlet motor, 32 inlet, 32a inlet lid, 32b inlet motor, 41 leak detector, 42 control unit, 51 blower, 71 introduction route, 72 discharge route, 100 cooling warehouse, 200 cooling warehouse, 232a introduction lid, 300 cooling warehouse, 331a discharge lid.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Refrigerator Housings (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

La présente invention concerne un entrepôt frigorifique comportant : un corps d'entrepôt comprenant un panneau d'isolation thermique et muni d'un orifice d'introduction apte à introduire de l'air extérieur dans l'entrepôt et un orifice d'évacuation apte à évacuer l'air intérieur vers l'extérieur de l'entrepôt ; un couvercle d'introduction disposé sur l'orifice d'introduction afin d'ouvrir ou de fermer l'orifice d'introduction ; un couvercle d'évacuation disposé sur l'orifice d'évacuation afin d'ouvrir ou de fermer l'orifice d'évacuation ; une unité de détection de fuites disposée à l'intérieur du corps d'entrepôt afin de détecter les fuites d'un fluide frigorigène ; et une unité de commande destinée à commander le couvercle d'introduction et le couvercle d'évacuation afin d'ouvrir l'orifice d'introduction et l'orifice d'évacuation si une fuite de fluide frigorigène est détectée par l'unité de détection de fuites.
PCT/JP2015/086204 2015-12-25 2015-12-25 Entrepôt frigorifique Ceased WO2017109932A1 (fr)

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JP2017557616A JP6735774B2 (ja) 2015-12-25 2015-12-25 冷却倉庫及び制御装置
PCT/JP2015/086204 WO2017109932A1 (fr) 2015-12-25 2015-12-25 Entrepôt frigorifique
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WO2019245669A1 (fr) * 2018-06-21 2019-12-26 Carrier Corporation Récipient réfrigéré muni d'un système de ventilation
US11060746B2 (en) 2017-12-01 2021-07-13 Johnson Controls Technology Company Systems and methods for detecting and responding to refrigerant leaks in heating, ventilating, and air conditioning systems

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GB2561097B (en) 2021-02-03
GB2561097A (en) 2018-10-03
JP6735774B2 (ja) 2020-08-05
CN108431529A (zh) 2018-08-21
GB201806458D0 (en) 2018-06-06

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