WO2005077687A1 - 車両用空調装置 - Google Patents
車両用空調装置 Download PDFInfo
- Publication number
- WO2005077687A1 WO2005077687A1 PCT/JP2005/001661 JP2005001661W WO2005077687A1 WO 2005077687 A1 WO2005077687 A1 WO 2005077687A1 JP 2005001661 W JP2005001661 W JP 2005001661W WO 2005077687 A1 WO2005077687 A1 WO 2005077687A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressor
- capacity
- variable
- temperature
- value
- 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
Links
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
- 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
- F25B49/022—Compressor control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/32—Cooling devices
- B60H2001/3236—Cooling devices information from a variable is obtained
- B60H2001/3255—Cooling devices information from a variable is obtained related to temperature
- B60H2001/3261—Cooling devices information from a variable is obtained related to temperature of the air at an evaporating unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/32—Cooling devices
- B60H2001/3269—Cooling devices output of a control signal
- B60H2001/327—Cooling devices output of a control signal related to a compressing unit
-
- 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
- F25B2400/00—Component parts or details not otherwise provided for in this subclass
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
- F25B2400/0751—Details of compressors or related parts with parallel compressors the compressors having different capacities
-
- 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
- F25B2500/19—Calculation of parameters
Definitions
- the present invention relates to a vehicle air conditioner provided with a refrigeration cycle having a refrigerant compressor, and more particularly to control of a vehicle air conditioner provided with a variable displacement compressor.
- an object of the present invention is to focus on the problems in the conventional control method as described above, and to provide a vehicle air conditioner in which the cooler temperature fluctuates greatly due to overshoot in feedback control at the time of compressor operation switching.
- An object of the present invention is to provide a vehicle air conditioner capable of suppressing deterioration of a passenger's sense of thermal comfort.
- a vehicle air conditioner has compressors different from each other, and is controlled by a capacity control value a among capacity control values a and b of the compressors different from each other.
- the capacity control method switching means for switching from the capacity control method A to the variable capacity control method B, and the capacity control method are switched. It has a feed-forward capacity value calculation means of the variable capacity control method B that calculates the capacity control value of the capacity control method B which is an input to the control target so that the target control amount is obtained later. After switching the capacity control method to the variable capacity control method B, the variable capacity control method Starting based on the feedforward capacity value calculated by the load capacity value calculation means.
- an air conditioner for a vehicle includes a refrigeration cycle, a compressor and a variable displacement compressor provided in the refrigeration cycle, and the variable displacement compressor operating means.
- Compressor operation switching means for switching the operation of the compressor and the variable displacement compressor; and the variable displacement compressor being an input to the refrigeration cycle such that a target control amount is obtained after switching the compressor operation.
- a variable capacity compressor feed forward capacity value calculating means for calculating the capacity control value of the compressor. After the operation is switched from the compressor to the variable capacity compressor, the variable capacity compressor is fed to the variable capacity compressor. It is characterized by starting based on the forward capacity value!
- the vehicle air conditioner according to the present invention further includes a refrigeration cycle load recognizing means capable of estimating or detecting a physical quantity having a correlation with the heat load on the refrigeration cycle.
- the variable displacement compressor feedforward capacity value may be calculated with reference to the refrigeration cycle load recognition value by the refrigeration cycle load recognition means before switching to the compressor.
- a ventilation duct a blower capable of blowing air into the vehicle interior through the ventilation duct, and a cooler connected to the refrigeration cycle and capable of cooling the air discharged into the vehicle interior.
- a cooler temperature recognizing means for estimating or detecting a physical quantity correlated with the temperature of the cooler or the temperature of the air passing through the cooler, and a cooler target for calculating the cooler target temperature with reference to the refrigeration cycle load.
- Temperature calculating means, and a variable displacement compressor feedback for calculating a feedback displacement such that the capacity of the variable displacement compressor becomes a predetermined displacement by referring to a deviation between the target value of the cooler and the recognized value of the cooler temperature.
- the variable capacity compressor is started based on the feedforward capacity value calculated by the variable capacity compressor feedforward capacity value calculation means.
- the operation of the variable displacement compressor is changed to the feedforward capacity.
- the control may be performed based on the amount value and the feed knocking capacity value calculated by the variable capacity compressor feedback capacity value calculating means.
- the feedforward capacity value calculated by the variable capacity compressor feedforward capacity value calculation means is referred to without referring to the cooler temperature recognition value by the cooler temperature recognition means. It is also possible to adopt a configuration in which the compressor is started based only on the compressor.
- a ventilation duct for estimating or detecting a physical quantity having a correlation with the temperature of the cooler or the temperature of the air passing through the cooler, and an external air for estimating or detecting a physical quantity having a correlation with the outside air temperature
- a solar radiation amount recognizing unit for estimating or detecting a physical amount having a correlation with the solar radiation amount, a blowing amount recognizing unit for estimating or detecting a physical amount having a correlation with the blowing amount of the blower,
- a cooling device for calculating the target value of the cooling device temperature; and a vehicle speed recognizing device for estimating or detecting a physical quantity correlated with the traveling speed of the vehicle.
- temperature recognition value outside air temperature recognition value, vehicle interior air temperature recognition value, cooler inlet air temperature recognition value, solar radiation amount recognition value, ventilation volume recognition value, cooler target temperature, and vehicle speed recognition value.
- variable capacity compression mechanism of the variable capacity compressor also includes a variable capacity compression mechanism based on a capacity control signal or a variable capacity compression mechanism based on rotation speed control. can do.
- variable capacity compressor when the operation of the compressor is switched, the variable capacity compressor is started based on the optimum feedforward capacity value corresponding to the refrigeration cycle load at that time. Large fluctuations in the cooler temperature are suppressed, and fluctuations in the temperature of the air blown into the cabin, Z room temperature, etc. are suppressed.
- the vehicle air conditioner of the present invention even when the refrigerant flow rate of the refrigeration cycle fluctuates greatly at the time of switching the operation of the compressor, the cooler temperature does not fluctuate significantly, and the cabin is not changed. It is possible to suppress fluctuations in the air outlet temperature Z, room temperature, etc., and consequently, it is possible to suppress the occupant's feeling of thermal comfort.
- FIG. 1 is a schematic system diagram of a vehicle air conditioner according to an embodiment of the present invention.
- FIG. 2 is a flowchart showing an example of control of the vehicle air conditioner of FIG. 1.
- FIG. 3 is a flowchart showing an example of control of a conventional vehicle air conditioner.
- FIG. 4 is a characteristic diagram showing an example of control when the compressor operation is switched to a compressor power variable displacement compressor in the control of FIG. 2, and an example of conventional control.
- FIG. 1 is a schematic system diagram of a vehicle air conditioner according to an embodiment of the present invention.
- a blower 4 for pressure-feeding the outside air or the intake air from the inside air Z and the inside air inlet 3 is provided upstream of a ventilation duct 2 that opens into the vehicle interior.
- the blower 4 is driven by a blower driving motor 5.
- an evaporator 6 is provided as a cooler for cooling the blown air.
- a heater core as a heater may be provided downstream of the evaporator 6 as necessary. After passing through the evaporator 6, the cooled air is blown into the vehicle interior.
- a refrigeration cycle 7 including the evaporator 5 is provided in the vehicle air conditioner 1 as described above.
- the refrigeration cycle 7 is composed of a refrigerant circuit in which each device is connected via a refrigerant pipe.
- the refrigeration cycle 7 has a compressor whose capacity can be controlled by a compressor capacity control signal 9 from a main controller 8.
- a compressor 11 and a variable capacity compressor 12 capable of variably controlling the capacity by a variable capacity compressor capacity control signal 10 are provided.
- the variable displacement compressor 12 may take the driving force from, for example, an engine of the vehicle, or may variably control the displacement by controlling the number of revolutions as a motor drive.
- the refrigeration cycle 7 includes a condenser 14 provided with a cooling fan 13 for condensing the high-temperature and high-pressure refrigerant compressed by the compressor 11, a receiver 15 for separating gas-liquid of the condensed refrigerant, Expansion valve 16 that decompresses and expands the refrigerant from the heat exchanger 15, and an evaporator 6 that evaporates the refrigerant from the expansion valve 16 and cools the air by heat exchange with the air sent through the ventilation duct 2. It has been. The refrigerant from the evaporator 6 is drawn into the compressor 11 or the variable capacity compressor 12 and compressed again.
- the main controller 8 includes an evaporator or an evaporator outlet air temperature (The signal detected by the cooler outlet air temperature sensor 18 as the evaporator temperature detecting means for detecting (Te) is sent, and the evaporator inlet air temperature (Tein) detected by the cooler inlet air temperature sensor 17 Is sent.
- the main controller 8 also receives a signal of the vehicle interior temperature (Tr) detected by the vehicle interior temperature sensor 19, a signal of the outdoor air temperature (Tamb) detected by the outdoor air temperature sensor 20, and a signal detected by the solar radiation sensor 21.
- the signal of the insolation (Rsun) is also sent.
- a voltage signal (rotational speed signal) (Vblw) for controlling the amount of air blown by the blower 4 is output from the main controller 8 to the blower driving motor 5.
- the main controller 8 controls the capacity at the time of starting the variable capacity compressor according to the refrigeration cycle load or the like when the compressor operation is switched. Control is performed.
- the main controller 8 reads the above-mentioned sensor input information (step S2), and the sensor input information power is also changed to the variable capacity compressor 12 (step S1).
- the feedforward capacitance value (Nmfi) is calculated by, for example, the following equation (step S3).
- Tet is the evaporator target temperature and Sp is the vehicle speed.
- the startup of the variable capacity compressor 12 is controlled. That is, when the variable capacity compressor 12 is started, the calculated capacity value (Nmfi) is started as the feedforward capacity value (step S4).
- the capacity control target value (Nmt) of the variable capacity compressor 12 is set to the feedforward capacity value (Nmfi), and the variable capacity compressor 12 is started based only on the feedforward capacity value (Nmfi). Is done.
- the variable displacement compressor 12 is driven by a motor, it is applied to the start control of this motor.
- This feedforward capacity value (Nmff) is calculated to an appropriate capacity value according to the actual refrigeration cycle load at that time, so even if the refrigerant flow rate fluctuates greatly at the time of compressor operation switching, This makes it possible to set an appropriate capacity value so that the temperature of the cooler (evaporator 6) does not fluctuate significantly, and the temperature of the air blown out through the cooler and into the cabin, and consequently Large fluctuations in temperature can be suppressed, and it is possible to prevent occupants from hindering thermal comfort.
- variable displacement compressor feedback control delay time (t) is calculated by, for example, the following equation (step S5), and the variable displacement compressor feedback rotation speed ( Nml) (for rotation speed control) is calculated by the following equation (step S8).
- Kp is the proportionality constant (gain)
- Ki is the integration constant (gain)
- Inn-1 is the previous value.
- step S6 it is determined whether or not the power has passed the delay time (t) (step S6). Until the predetermined time has elapsed, the variable displacement compressor displacement control is performed with the feedforward displacement value (Nmff) as a target. (Step S7). After the elapse of the delay time (t), following step S8, the variable displacement compressor displacement control is performed with the target of the sum of the feedforward displacement value (Nmff) and the feedback displacement value (Nmlb) (step S9).
- the air conditioning control can be started without causing a large fluctuation in the blowout temperature or the like even if the flow rate of the refrigerant is changed as the feedforward control until the start is stabilized. After the start-up becomes stable, feedback control can be added to control the target temperature more accurately.
- FIG. 3 shows a conventional control using only general feedback.
- the conventional control according to the flow shown in FIG. 3, when the compressor operation is switched, each input signal Z variable is input to the main controller, and the capacity of the variable capacity compressor is controlled according to the refrigeration cycle load. Therefore, as shown in FIG. 4, a comparison between the control according to the present invention and the conventional control shows that in the conventional control, when the refrigerant flow rate fluctuates greatly after the compressor operation is switched, the fluctuation in the refrigerant flow rate is canceled out. Because the feedback control causes an overshoot in the capacity control value, the refrigerant flow rate fluctuates greatly.
- the vehicle air conditioner according to the present invention can be suitably applied to any vehicle air conditioner equipped with a refrigeration cycle having a compressor and a variable capacity compressor, and in particular, suppresses deterioration of occupant thermal comfort when switching compressor operation. It is best applied when it is required.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/598,009 US20070130975A1 (en) | 2004-02-16 | 2005-02-04 | Air conditioning system for vehicles |
| EP05709727A EP1717073A4 (en) | 2004-02-16 | 2005-02-04 | VEHICLE AIR CONDITIONING |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-038027 | 2004-02-16 | ||
| JP2004038027A JP4436151B2 (ja) | 2004-02-16 | 2004-02-16 | 車両用空調装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005077687A1 true WO2005077687A1 (ja) | 2005-08-25 |
Family
ID=34857797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/001661 Ceased WO2005077687A1 (ja) | 2004-02-16 | 2005-02-04 | 車両用空調装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070130975A1 (ja) |
| EP (1) | EP1717073A4 (ja) |
| JP (1) | JP4436151B2 (ja) |
| WO (1) | WO2005077687A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593092A (zh) * | 2013-09-30 | 2016-05-18 | 日产自动车株式会社 | 混合动力车辆的控制装置以及控制方法 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5475501B2 (ja) * | 2010-02-24 | 2014-04-16 | サンデン株式会社 | 車両用空調装置 |
| US20150052916A1 (en) * | 2013-08-23 | 2015-02-26 | Caterpillar Inc. | System and method for controlling air conditioning system |
| EP3400410B1 (de) * | 2016-12-01 | 2019-08-07 | Nidec Global Appliance Germany GmbH | Verfahren zum betrieb eines drehzahlvariablen kältemittelverdichters |
| US11674706B2 (en) * | 2021-09-09 | 2023-06-13 | Haier Us Appliance Solutions, Inc. | System and method for operating an air conditioner unit having an auxiliary electric heater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05270255A (ja) * | 1992-01-07 | 1993-10-19 | Sanden Corp | 空調制御装置 |
| JP2003211953A (ja) * | 2002-01-23 | 2003-07-30 | Sanden Corp | 車両用空調装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142140A (ja) * | 1983-12-28 | 1985-07-27 | Matsushita Electric Ind Co Ltd | 空気調和機 |
| JPH0667686B2 (ja) * | 1987-10-26 | 1994-08-31 | 株式会社ゼクセル | 車両用空調制御装置 |
| EP0551008B1 (en) * | 1992-01-07 | 1996-03-06 | Sanden Corporation | Control apparatus for use in automotive air conditioning system |
| US6761037B2 (en) * | 2002-01-23 | 2004-07-13 | Sanden Corporation | Vehicle air conditioner using a hybrid compressor |
-
2004
- 2004-02-16 JP JP2004038027A patent/JP4436151B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-04 WO PCT/JP2005/001661 patent/WO2005077687A1/ja not_active Ceased
- 2005-02-04 EP EP05709727A patent/EP1717073A4/en not_active Withdrawn
- 2005-02-04 US US10/598,009 patent/US20070130975A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05270255A (ja) * | 1992-01-07 | 1993-10-19 | Sanden Corp | 空調制御装置 |
| JP2003211953A (ja) * | 2002-01-23 | 2003-07-30 | Sanden Corp | 車両用空調装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1717073A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593092A (zh) * | 2013-09-30 | 2016-05-18 | 日产自动车株式会社 | 混合动力车辆的控制装置以及控制方法 |
| CN105593092B (zh) * | 2013-09-30 | 2017-09-08 | 日产自动车株式会社 | 车辆的控制装置以及控制方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1717073A1 (en) | 2006-11-02 |
| JP2005225418A (ja) | 2005-08-25 |
| US20070130975A1 (en) | 2007-06-14 |
| EP1717073A4 (en) | 2008-05-21 |
| JP4436151B2 (ja) | 2010-03-24 |
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