WO2015174218A1 - 車両用空気調和装置、それを備えた車両、及び、車両用空気調和装置の制御方法 - Google Patents
車両用空気調和装置、それを備えた車両、及び、車両用空気調和装置の制御方法 Download PDFInfo
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- WO2015174218A1 WO2015174218A1 PCT/JP2015/062001 JP2015062001W WO2015174218A1 WO 2015174218 A1 WO2015174218 A1 WO 2015174218A1 JP 2015062001 W JP2015062001 W JP 2015062001W WO 2015174218 A1 WO2015174218 A1 WO 2015174218A1
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- WIPO (PCT)
- Prior art keywords
- heat exchanger
- side heat
- load
- air conditioner
- vehicle
- Prior art date
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- 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 [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
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- 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 [HVAC] devices
-
- 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 [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00371—Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
-
- 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 [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
- B60H1/00828—Ventilators, e.g. speed control
-
- 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 [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
- B60H1/00907—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant changes and an evaporator becomes condenser
-
- 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 [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
- B60H1/321—Control means therefor for preventing the freezing of a heat exchanger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- 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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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- 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 [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
- B60H2001/00235—Devices in the roof area of the passenger compartment
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- 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 [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H2001/00935—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising four way valves for controlling the fluid direction
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- 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 [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H2001/00961—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising means for defrosting outside heat exchangers
Definitions
- the present invention relates to a vehicle air conditioner, a vehicle including the same, and a control method for the vehicle air conditioner.
- a refrigerant circulation circuit in which a compressor, a heat source side heat exchanger, an expansion device, and a load side heat exchanger are connected by piping, heating operation, and defrosting operation of the heat source side heat exchanger And a control means for switching between.
- a control means circulates the refrigerant
- the control means operates the load-side fan to generate an airflow flowing from the load-side heat exchanger into the passenger compartment, and during the defrosting operation of the heat source-side heat exchanger.
- the load side blower is usually stopped. When so controlled, the air cooled by the load-side heat exchanger is suppressed from flowing into the vehicle compartment during the defrosting operation of the heat source-side heat exchanger.
- the heat exchange amount (heat absorption amount) in the load-side heat exchanger will be insufficient, and the low-pressure side pressure in the refrigerant circuit will be reduced.
- the high-pressure side pressure of the refrigerant circuit is reduced. For this reason, an increase in the time required for the defrosting operation of the heat source side heat exchanger and a corresponding decrease in the temperature in the passenger compartment occur, resulting in a decrease in passenger comfort and the like. That is, the conventional vehicle air conditioner has a problem that the operation efficiency in the defrosting operation of the heat source side heat exchanger is low.
- the present invention has been made against the background of the above problems, and provides a vehicle air conditioner with improved operational efficiency in a defrosting operation of a heat source side heat exchanger. Moreover, the vehicle provided with such an air conditioning apparatus for vehicles is obtained. Moreover, the control method of the vehicle air conditioner with which the operating efficiency in the defrosting operation of the heat source side heat exchanger was improved is obtained.
- the vehicle air conditioner according to the present invention includes a refrigerant circulation circuit in which a compressor, a heat source side heat exchanger, an expansion device, and a load side heat exchanger are connected by piping, and a refrigerant in the refrigerant circulation circuit.
- Control means for switching between a heating operation for circulating the refrigerant and a defrosting operation for the heat source side heat exchanger for circulating the refrigerant in the refrigerant circulation circuit in a direction opposite to that during the heating operation.
- an airflow flowing from the load side heat exchanger into the vehicle interior through the first air outlet is generated, and during the defrosting operation of the heat source side heat exchanger, from the vehicle interior through the first air outlet.
- An airflow flowing into the load side heat exchanger is generated.
- control means generates an airflow flowing from the load-side heat exchanger into the vehicle interior via the first air outlet during the heating operation, and defrosts the heat source-side heat exchanger. During operation, an air flow flowing from the passenger compartment into the load-side heat exchanger through the first outlet is generated.
- the air in the passenger compartment that has become hot due to the heating operation will be supplied to the load side heat exchanger, and the decrease in the low pressure side pressure of the refrigerant circuit is suppressed, As a result, a decrease in the high-pressure side pressure of the refrigerant circulation circuit is suppressed, and the operation efficiency in the defrosting operation of the heat source side heat exchanger is improved.
- the operation efficiency in the defrosting operation of the heat source-side heat exchanger is further improved.
- FIG. It is a figure for demonstrating a structure and operation
- FIG. It is a figure for demonstrating a structure and operation
- FIG. It is a figure for demonstrating a structure and operation
- FIG. It is a figure for demonstrating a structure and operation
- FIG. It is a figure for demonstrating a structure and operation
- FIG. It is a figure for demonstrating a structure and operation
- FIG. It is a figure for demonstrating a structure and operation
- FIG. 5 It is a figure for demonstrating a structure and operation
- the vehicle air conditioner according to the present invention may be applied to a railway vehicle, may be applied to a large bus, and may be applied to vehicles other than those.
- the refrigerant circulation circuit of the vehicle air conditioner according to the present invention is described in the case where the refrigerant circulation circuit is disposed behind the ceiling of the passenger compartment.
- the present invention is not limited to such a case. All or part of the refrigerant circulation circuit or the like of the vehicle air conditioner according to the present invention may be disposed below the floor of the passenger compartment.
- the configuration, operation, and the like described below are examples, and the vehicle air conditioner according to the present invention is not limited to such a configuration, operation, and the like.
- symbol is attached
- symbol is abbreviate
- the illustration of the fine structure is simplified or omitted as appropriate.
- overlapping descriptions are simplified or omitted as appropriate.
- FIG. 1 shows the vehicle air conditioner 10 in a state where the ceiling 3 of the passenger compartment 2 of the vehicle 1 is viewed upward
- FIG. 2 is a cross-sectional view of the vehicle 1 taken along line AA in FIG.
- the vehicle air conditioner 10 in the state is shown.
- FIG. 1 shows the vehicle air conditioner 10 in a state where the ceiling 3 of the passenger compartment 2 of the vehicle 1 is viewed upward
- FIG. 2 is a cross-sectional view of the vehicle 1 taken along line AA in FIG.
- the vehicle air conditioner 10 in the state is shown.
- FIG. 1 shows the vehicle air conditioner 10 in a state where the ceiling 3 of the passenger compartment 2 of the vehicle 1 is viewed upward
- FIG. 2 is a cross-sectional view of the vehicle 1 taken along line AA in FIG.
- the vehicle air conditioner 10 in the state is shown.
- FIG. 1 shows the vehicle air conditioner 10 in a state where the ceiling 3 of the passenger compartment 2 of the vehicle 1 is viewed upward
- FIG. 2 is a cross-sectional view of
- the vehicle air conditioner 10 includes a refrigerant circulation circuit 11, a heat source side fan 12, a load side fan 13, and a control device 14.
- the compressor 21, the flow path switching device 22, the heat source side heat exchanger 23, the expansion device 24, and the load side heat exchanger 25 are connected by piping to form the refrigerant circulation circuit 11.
- the flow path switching device 22 may be a four-way valve or another flow path switching device.
- a compressor 21 and a flow path switching device 22 are disposed in the machine room 3a.
- the heat source side heat exchanger 23, the expansion device 24, and the heat source side blower 12 are disposed in the heat source chamber 3b.
- a load side heat exchanger 25 and a load side blower 13 are disposed in the load chamber 3c.
- the load-side blower 13 is disposed in an air passage that communicates the load-side heat exchanger 25 with the first air outlet 5 formed on the ceiling of the passenger compartment 2 or the like.
- a duct may be interposed in an air passage that allows the load-side blower 13 and the first air outlet 5 to communicate with each other.
- the control device 14 governs the overall operation of the vehicle air conditioner 10.
- the control device 14 may be disposed on the ceiling 3 of the vehicle 1, may be disposed other than the ceiling 3 of the vehicle 1, and is disposed other than the vehicle 1.
- the operation of the device 10 may be controlled remotely.
- the control device 14 may be constituted by, for example, a microprocessor unit or the like, may be constituted by a firmware or the like that can be updated, and is a program module or the like that is executed by a command from the CPU or the like. May be.
- the control device 14 corresponds to “control means” in the present invention.
- the control device 14 causes the vehicle air conditioner 10 to perform at least a heating operation.
- the control device 14 causes the vehicle air conditioner 10 to perform at least the heating operation and the cooling operation.
- the control apparatus 14 makes the air-conditioning apparatus 10 for vehicles into the heat-source side regularly or according to outputs, such as a sensor.
- the defrosting operation of the heat exchanger 23 is performed.
- the operation at the time of the defrosting operation of the heat source side heat exchanger 23 to be described below may be always performed or may be performed as necessary. Good.
- the control device 14 switches the flow path of the flow path switching device 22 to allow the discharge side of the compressor 21 and the load side heat exchanger 25 to communicate with each other. Further, the control device 14 rotates the fan (propeller fan or the like) of the load-side blower 13 in the forward direction and loads the load through the first suction port 4 formed in the ceiling or the like of the passenger compartment 2 from the inside of the passenger compartment 2.
- the airflow 51 flows into the side heat exchanger 25 and flows into the vehicle compartment 2 from the load side heat exchanger 25 through the first air outlet 5 formed on the ceiling of the vehicle compartment 2 or the like.
- the high-temperature and high-pressure refrigerant discharged from the compressor 21 flows into the load side heat exchanger 25.
- the refrigerant flowing into the load side heat exchanger 25 is condensed by exchanging heat with the air passing through the load side heat exchanger 25 and flows into the expansion device 24.
- the refrigerant decompressed by the expansion device 24 flows into the heat source side heat exchanger 23, evaporates by exchanging heat with the air passing through the heat source side heat exchanger 23, and is sucked into the compressor 21.
- the control device 14 switches the flow path of the flow path switching device 22 to allow the discharge side of the compressor 21 and the heat source side heat exchanger 23 to communicate with each other. Further, the control device 14 rotates the fan (propeller fan or the like) of the load-side blower 13 in the negative direction, and loads the load from the interior of the compartment 2 through the first outlet 5 formed on the ceiling of the compartment 2 or the like.
- the airflow 52 flows into the side heat exchanger 25 and flows into the vehicle compartment 2 from the load side heat exchanger 25 through the first suction port 4 formed on the ceiling of the vehicle compartment 2 or the like.
- the high-temperature and high-pressure refrigerant discharged from the compressor 21 flows into the heat source side heat exchanger 23.
- the refrigerant flowing into the heat source side heat exchanger 23 dissolves frost adhering to the heat source side heat exchanger 23 and flows into the expansion device 24.
- the refrigerant decompressed by the expansion device 24 flows into the load side heat exchanger 25, exchanges heat with the air passing through the load side heat exchanger 25, and is sucked into the compressor 21.
- the control device 14 flows into the load side heat exchanger 25 from the inside of the passenger compartment 2 through the first suction port 4 during the heating operation, and the first blower from the load side heat exchanger 25.
- An air flow 51 flowing into the passenger compartment 2 through the outlet 5 is generated, and the load-side heat exchanger 25 is passed from the passenger compartment 2 through the first outlet 5 during the defrosting operation of the heat source side heat exchanger 23.
- An air flow 52 that flows in and flows into the passenger compartment 2 from the load-side heat exchanger 25 through the first suction port 4 is generated.
- the air in the passenger compartment 2 that has become high temperature by the heating operation is supplied to the load side heat exchanger 25, and the low pressure side pressure of the refrigerant circuit 11 is reduced.
- the decrease is suppressed, and as a result, the decrease in the high-pressure side pressure of the refrigerant circulation circuit 11 is suppressed, and the operation efficiency in the defrosting operation of the heat source side heat exchanger 23 is improved.
- the operation efficiency of the heat source side heat exchanger 23 in the defrosting operation is further improved.
- the air flows into the load side heat exchanger 25 from the passenger compartment 2 through the first outlet 5, and the load side heat exchanger An airflow 52 flowing into the passenger compartment 2 from the first suction port 4 from 25 is generated.
- air cooled by the load-side heat exchanger 25 flows into the passenger compartment 2, and there is a possibility that passenger comfort may not be ensured, but in such a case, for example,
- the first suction port 4 may be formed at a position where passengers or the like do not approach, and a device such as reducing the amount of air blown by the load-side fan 13 during the defrosting operation of the heat source side heat exchanger 23 may be taken.
- the control device 14 reverses the rotation direction of the fan (propeller fan or the like) of the load-side fan 13 during the heating operation during the defrosting operation of the heat source side heat exchanger 23.
- an air flow 52 flowing from the interior of the passenger compartment 2 into the load-side heat exchanger 25 via the first outlet 5 and flowing into the passenger compartment 2 from the load-side heat exchanger 25 via the first inlet 4 is generated.
- Other techniques may be employed if they occur.
- the control device 14 changes the direction of the load side blower 13 itself without changing the rotation direction of the fan (propeller fan or the like) of the load side blower 13 and changes the direction of the load side blower 13. Also good.
- another fan that is opposite to the load-side fan 13 is provided in parallel with the load-side fan 13, and the control device 14 operates the other fan during the defrosting operation of the heat source-side heat exchanger 23.
- the control device 14 reverses the rotation direction of the fan (propeller fan or the like) of the load-side fan 13 during the defrosting operation of the heat source side heat exchanger 23 as in the air conditioning apparatus 10 for a vehicle. Since the configuration can be simplified, parts costs and the like are reduced.
- FIG. 3 is a diagram for explaining the configuration and operation of the vehicle air conditioner according to the second embodiment.
- FIG. 3 shows the vehicle air conditioner 10 in a state in which the vehicle 1 is viewed in cross section along a line corresponding to the line AA in FIG.
- a second air outlet 6 is formed in the load chamber 3c. Further, a first damper 15 is disposed at the first suction port 4, and a second damper 16 is disposed at the second air outlet 6.
- the control device 14 opens the first damper 15 and closes the second damper 16. Further, the control device 14 rotates the fan (propeller fan or the like) of the load-side blower 13 in the forward direction and loads the load through the first suction port 4 formed in the ceiling or the like of the passenger compartment 2 from the inside of the passenger compartment 2.
- the airflow 51 flows into the side heat exchanger 25 and flows into the vehicle compartment 2 from the load side heat exchanger 25 through the first air outlet 5 formed on the ceiling of the vehicle compartment 2 or the like.
- the control device 14 closes the first damper 15 and opens the second damper 16. Further, the control device 14 rotates the fan (propeller fan or the like) of the load-side blower 13 in the negative direction, and loads the load from the interior of the compartment 2 through the first outlet 5 formed on the ceiling of the compartment 2 or the like.
- the airflow 53 flows into the side heat exchanger 25 and flows out of the vehicle through the second air outlet 6 formed in the load chamber 3c from the load side heat exchanger 25.
- the control device 14 rotates a fan (such as a propeller fan) of the load side blower 13 in the negative direction during the defrosting operation of the heat source side heat exchanger 23, thereby An airflow 53 that flows into the load-side heat exchanger 25 through the one outlet 5 and flows out of the vehicle through the second outlet 6 from the load-side heat exchanger 25 is generated. Therefore, the air cooled by the load side heat exchanger 25 is suppressed from flowing into the passenger compartment 2, and passenger comfort and the like are improved.
- a fan such as a propeller fan
- the air conditioner 10 In the vehicle air conditioner 10, the air conditioner 10 is in an open state during the heating operation, and flows into the load side heat exchanger 25 from the inside of the passenger compartment 2 through the first suction port 4.
- the first damper 15 that allows the airflow 51 flowing into the passenger compartment 2 through the first outlet 5 to pass therethrough is provided, and the control device 14 closes the first damper 15 during the defrosting operation of the heat source side heat exchanger 23. Put it in a state. Therefore, it is ensured that the air cooled by the load-side heat exchanger 25 flows into the passenger compartment 2, and passenger comfort and the like are further improved.
- the heat source side heat exchanger 23 is opened during the defrosting operation, and flows into the load side heat exchanger 25 from the passenger compartment 2 through the first outlet 5.
- the second damper 16 that passes the airflow 53 flowing out of the vehicle from the load-side heat exchanger 25 through the second outlet 6 is provided, and the control device 14 closes the second damper 16 during the heating operation. . Therefore, it is compatible to improve the driving efficiency while improving passenger comfort and the like in the defrosting operation of the heat source side heat exchanger 23 and to improve the driving efficiency in the heating operation.
- the control device 14 closes the first damper 15 during the defrosting operation of the heat source side heat exchanger 23, and closes the second damper 16 during the heating operation.
- the control device 14 opens the first damper 15 in a narrower state compared to that during the heating operation, and during the heating operation, the second damper 16 is moved to the heat source side heat exchanger. Compared with the time of 23 defrosting operation, you may be in a narrow open state.
- the control device 14 closes the first damper 15 during the defrosting operation of the heat source side heat exchanger 23 and closes the second damper 16 during the heating operation, the above-described effect is maximized. .
- FIG. 4 is a diagram for explaining the configuration and operation of the vehicle air conditioner according to the third embodiment.
- FIG. 4 shows the vehicle air conditioner 10 in a state in which the vehicle 1 is viewed in cross section along a line corresponding to the line AA in FIG.
- an auxiliary blower 17 is disposed in the load chamber 3c.
- the auxiliary blower 17 is disposed in an air passage that communicates the load-side heat exchanger 25 with the second air outlet 6 formed in the load chamber 3c.
- a duct may be interposed in an air passage that allows the auxiliary blower 17 and the second air outlet 6 to communicate with each other.
- the control device 14 opens the first damper 15 and closes the second damper 16. Further, the control device 14 rotates the fan (propeller fan or the like) of the load-side blower 13 in the forward direction and loads the load through the first suction port 4 formed in the ceiling or the like of the passenger compartment 2 from the inside of the passenger compartment 2.
- the airflow 51 flows into the side heat exchanger 25 and flows into the vehicle compartment 2 from the load side heat exchanger 25 through the first air outlet 5 formed on the ceiling of the vehicle compartment 2 or the like.
- the control device 14 closes the first damper 15 and opens the second damper 16.
- the control device 14 operates the auxiliary blower 17 and flows into the load side heat exchanger 25 from the inside of the passenger compartment 2 through the first outlet 5 formed on the ceiling of the passenger compartment 2 and the like.
- An air flow 53 that flows out of the vehicle is generated from the heat exchanger 25 through the second air outlet 6 formed in the load chamber 3c.
- the control device 14 operates the auxiliary blower 17 during the defrosting operation of the heat source side heat exchanger 23, and performs load side heat exchange from the passenger compartment 2 through the first outlet 5.
- the airflow 53 flowing into the storage unit 25 and flowing out of the vehicle from the load side heat exchanger 25 through the second outlet 6 is generated. Therefore, the operation efficiency in the defrosting operation of the heat source side heat exchanger 23 is improved without adopting a fan that can secure the air flow amount even if the fan (propeller fan or the like) is rotated in the negative direction as the load side air blower 13. It becomes possible, and the freedom degree of the air conditioning apparatus 10 for vehicles is expanded.
- control device 14 operates only the auxiliary blower 17 during the defrosting operation of the heat source side heat exchanger 23, but the control device 14 operates the auxiliary blower 17. Moreover, you may rotate the fan (propeller fan etc.) of the load side air blower 13 to a negative direction always or as needed.
- FIG. 4 the vehicle air conditioner according to Embodiment 4 will be described. Note that the description overlapping with the vehicle air conditioner according to Embodiments 1 to 3 is appropriately simplified or omitted.
- ⁇ Configuration and operation of vehicle air conditioner> The configuration and operation of the vehicle air conditioner according to Embodiment 4 will be described.
- 5 and 6 are diagrams for explaining the configuration and operation of the vehicle air conditioner according to Embodiment 4.
- FIG. 5 shows the vehicle air conditioner 10 in a state where the ceiling 3 of the compartment 2 of the vehicle 1 is viewed upward
- FIG. 6 is a cross-sectional view of the vehicle 1 taken along line BB in FIG.
- the vehicle air conditioner 10 in the state is shown.
- FIG. 5 shows the vehicle air conditioner 10 in a state where the ceiling 3 of the compartment 2 of the vehicle 1 is viewed upward
- FIG. 6 is a cross-sectional view of the vehicle 1 taken along line BB in FIG.
- the vehicle air conditioner 10 in the state is shown.
- FIG. 5 shows the vehicle air conditioner 10
- the load chamber 3c is provided with a load-side fan 13A in which a sirocco fan 31 is employed.
- the sirocco fan 31 has suction ports 31a on both the side far from the drive motor 32 in the direction of the rotation axis and the side closer to it.
- the suction port 31 a may be formed only on the side far from the drive motor 32.
- the load-side blower 13A blows out the air sucked from the suction port 31a into the vehicle compartment 2 through the first air outlet 5 formed below.
- the control device 14 opens the first damper 15 and closes the second damper 16. Further, the control device 14 operates the load-side fan 13A and flows into the load-side heat exchanger 25 from the inside of the vehicle compartment 2 through the first suction port 4 formed in the ceiling of the vehicle compartment 2 and the like. An airflow 51 flowing into the passenger compartment 2 is generated from the side heat exchanger 25 through the first outlet 5 formed on the ceiling of the passenger compartment 2 or the like.
- the control device 14 closes the first damper 15 and opens the second damper 16.
- the control device 14 operates the auxiliary blower 17 and flows into the load side heat exchanger 25 from the inside of the passenger compartment 2 through the first outlet 5 formed on the ceiling of the passenger compartment 2 and the like.
- An air flow 53 that flows out of the vehicle is generated from the heat exchanger 25 through the second air outlet 6 formed in the load chamber 3c.
- the control device 14 operates the auxiliary blower 17 during the defrosting operation of the heat source side heat exchanger 23, and performs load side heat exchange from the passenger compartment 2 through the first outlet 5.
- the airflow 53 flowing into the storage unit 25 and flowing out of the vehicle from the load side heat exchanger 25 through the second outlet 6 is generated. Therefore, although the operating efficiency in the defrosting operation of the heat source side heat exchanger 23 is improved, the load-side fan 13A employing the sirocco fan 31 can be used, and the operating efficiency in the heating operation can be improved. It is possible to improve.
- FIG. 7 is a diagram for explaining the configuration and operation of the vehicle air conditioner according to the fifth embodiment.
- FIG. 7 shows the vehicle air conditioner 10 in a state in which the vehicle 1 is viewed in cross section along a line corresponding to the line AA in FIG.
- a heater 18 is disposed in the load chamber 3c.
- the heater 18 is disposed in an air path that allows the load-side heat exchanger 25 and the first air outlet 5 to communicate with each other.
- the control device 14 causes the vehicle air conditioner 10 to perform at least a heating operation and a cooling operation. Moreover, in order to remove the frost adhering to the load side heat exchanger 25 by air_conditionaing
- the control device 14 opens the first damper 15 and closes the second damper 16. Further, the control device 14 rotates the fan (propeller fan or the like) of the load-side blower 13 in the forward direction and loads the load through the first suction port 4 formed in the ceiling or the like of the passenger compartment 2 from the inside of the passenger compartment 2.
- the airflow 51 flows into the side heat exchanger 25 and flows into the vehicle compartment 2 from the load side heat exchanger 25 through the first air outlet 5 formed on the ceiling of the vehicle compartment 2 or the like.
- the control device 14 closes the first damper 15 and opens the second damper 16. Further, the control device 14 rotates the fan (propeller fan or the like) of the load-side blower 13 in the negative direction, and loads the load from the interior of the compartment 2 through the first outlet 5 formed on the ceiling of the compartment 2 or the like.
- the airflow 53 flows into the side heat exchanger 25 and flows out of the vehicle through the second air outlet 6 formed in the load chamber 3c from the load side heat exchanger 25. Further, the control device 14 operates the heater 18.
- the control device 14 switches the flow path of the flow path switching device 22 to allow the discharge side of the compressor 21 and the heat source side heat exchanger 23 to communicate with each other.
- the high-temperature and high-pressure refrigerant discharged from the compressor 21 flows into the heat source side heat exchanger 23.
- the refrigerant flowing into the heat source side heat exchanger 23 is condensed by exchanging heat with the air passing through the heat source side heat exchanger 23 and flows into the expansion device 24.
- the refrigerant decompressed by the expansion device 24 flows into the load-side heat exchanger 25, exchanges heat with the air passing through the load-side heat exchanger 25, evaporates, and is sucked into the compressor 21.
- the control device 14 operates the heater 18 to melt the frost attached to the load side heat exchanger 25.
- the control device 14 does not have to circulate the refrigerant in the refrigerant circulation circuit 11 and switches the flow path of the flow path switching device 22 so that the discharge side of the compressor 21 communicates with the load side heat exchanger 25.
- the refrigerant in the refrigerant circuit 11 may be circulated.
- the control device 14 flows into the load side heat exchanger 25 from the inside of the passenger compartment 2 through the first outlet 5 during the defrosting operation of the heat source side heat exchanger 23, and A heater 18 disposed in an air passage that generates an airflow 53 that flows out of the vehicle from the heat exchanger 25 through the second air outlet 6 and that communicates the load side heat exchanger 25 and the first air outlet 5. Make it work. Therefore, the operation efficiency in the defrosting operation of the heat source side heat exchanger 23 is further improved.
- the control device 14 is an air passage that communicates the load side heat exchanger 25 and the first outlet 5 during the defrosting operation of the load side heat exchanger 25, that is, the load side.
- frost adhering to the load-side heat exchanger 25 is melted. Therefore, it is possible to perform the defrosting operation of the load-side heat exchanger 25 without adding additional components, and the cost of components of the vehicle air conditioner 10 is reduced.
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Abstract
Description
なお、本発明に係る車両用空気調和装置は、鉄道車両に適用されてもよく、また、大型バスに適用されてもよく、また、それら以外の車両に適用されてもよい。また、以下では、本発明に係る車両用空気調和装置の冷媒循環回路等が、車室の天井裏に配設される場合を説明しているが、そのような場合に限定されず、例えば、本発明に係る車両用空気調和装置の冷媒循環回路等の全て又は一部が、車室の床下等に配設されてもよい。
以下に、実施の形態1に係る車両用空気調和装置を説明する。
<車両用空気調和装置の構成及び動作>
実施の形態1に係る車両用空気調和装置の構成及び動作について説明する。
図1及び図2は、実施の形態1に係る車両用空気調和装置の、構成及び動作を説明するための図である。なお、図1は、車両1の車室2の天井裏3を上方視した状態での車両用空気調和装置10を示し、図2は、車両1を図1におけるA―A線で断面視した状態での車両用空気調和装置10を示している。また、図1では、暖房運転時の冷媒の流れを墨付きの実線矢印で示し、熱源側熱交換器23の除霜運転時の冷媒の流れを墨付きの点線矢印で示し、暖房運転時の流路切換装置22の流路を実線で示し、熱源側熱交換器23の除霜運転時の流路切換装置22の流路を点線で示している。
制御装置14は、流路切換装置22の流路を切り換えて、圧縮機21の吐出側と負荷側熱交換器25とを連通させる。また、制御装置14は、負荷側送風機13のファン(プロペラファン等)を正方向に回転させて、車室2内から車室2の天井等に形成された第1吸込口4を介して負荷側熱交換器25に流入し、負荷側熱交換器25から車室2の天井等に形成された第1吹出口5を介して車室2内に流入する気流51を生じさせる。
制御装置14は、流路切換装置22の流路を切り換えて、圧縮機21の吐出側と熱源側熱交換器23とを連通させる。また、制御装置14は、負荷側送風機13のファン(プロペラファン等)を負方向に回転させて、車室2内から車室2の天井等に形成された第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から車室2の天井等に形成された第1吸込口4を介して車室2内に流入する気流52を生じさせる。
実施の形態1に係る車両用空気調和装置の作用について説明する。
車両用空気調和装置10では、制御装置14が、暖房運転時に、車室2内から第1吸込口4を介して負荷側熱交換器25に流入し、負荷側熱交換器25から第1吹出口5を介して車室2内に流入する気流51を生じさせ、熱源側熱交換器23の除霜運転時に、車室2内から第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から第1吸込口4を介して車室2内に流入する気流52を生じさせる。そのため、熱源側熱交換器23の除霜運転時に、暖房運転によって高温となった車室2内の空気が負荷側熱交換器25に供給されることとなり、冷媒循環回路11の低圧側圧力の低下が抑制され、その結果、冷媒循環回路11の高圧側圧力の低下が抑制されることとなって、熱源側熱交換器23の除霜運転における運転効率が向上される。また、負荷側熱交換器25に、第1吹出口5の周囲に滞留する比較的高温の空気が供給されるため、熱源側熱交換器23の除霜運転における運転効率が更に向上される。
以下、実施の形態2に係る車両用空気調和装置について説明する。
なお、実施の形態1に係る車両用空気調和装置と重複する説明は、適宜簡略化又は省略している。
<車両用空気調和装置の構成及び動作>
実施の形態2に係る車両用空気調和装置の構成及び動作について説明する。
図3は、実施の形態2に係る車両用空気調和装置の、構成及び動作を説明するための図である。なお、図3は、車両1を図1におけるA―A線に相当する線で断面視した状態での車両用空気調和装置10を示している。
制御装置14は、第1ダンパ15を開状態とし、第2ダンパ16を閉状態とする。また、制御装置14は、負荷側送風機13のファン(プロペラファン等)を正方向に回転させて、車室2内から車室2の天井等に形成された第1吸込口4を介して負荷側熱交換器25に流入し、負荷側熱交換器25から車室2の天井等に形成された第1吹出口5を介して車室2内に流入する気流51を生じさせる。
制御装置14は、第1ダンパ15を閉状態とし、第2ダンパ16を開状態とする。また、制御装置14は、負荷側送風機13のファン(プロペラファン等)を負方向に回転させて、車室2内から車室2の天井等に形成された第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から負荷室3cに形成された第2吹出口6を介して車外に流出する気流53を生じさせる。
実施の形態2に係る車両用空気調和装置の作用について説明する。
車両用空気調和装置10では、制御装置14が、熱源側熱交換器23の除霜運転時に、負荷側送風機13のファン(プロペラファン等)を負方向に回転させて、車室2内から第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から第2吹出口6を介して車外に流出する気流53を生じさせる。そのため、負荷側熱交換器25で冷却された空気が車室2内に流入することが抑制されて、乗客の快適性等が向上される。
以下、実施の形態3に係る車両用空気調和装置について説明する。
なお、実施の形態1及び実施の形態2に係る車両用空気調和装置と重複する説明は、適宜簡略化又は省略している。
<車両用空気調和装置の構成及び動作>
実施の形態3に係る車両用空気調和装置の構成及び動作について説明する。
図4は、実施の形態3に係る車両用空気調和装置の、構成及び動作を説明するための図である。なお、図4は、車両1を図1におけるA―A線に相当する線で断面視した状態での車両用空気調和装置10を示している。
制御装置14は、第1ダンパ15を開状態とし、第2ダンパ16を閉状態とする。また、制御装置14は、負荷側送風機13のファン(プロペラファン等)を正方向に回転させて、車室2内から車室2の天井等に形成された第1吸込口4を介して負荷側熱交換器25に流入し、負荷側熱交換器25から車室2の天井等に形成された第1吹出口5を介して車室2内に流入する気流51を生じさせる。
制御装置14は、第1ダンパ15を閉状態とし、第2ダンパ16を開状態とする。また、制御装置14は、補助送風機17を稼働させて、車室2内から車室2の天井等に形成された第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から負荷室3cに形成された第2吹出口6を介して車外に流出する気流53を生じさせる。
実施の形態3に係る車両用空気調和装置の作用について説明する。
車両用空気調和装置10では、制御装置14が、熱源側熱交換器23の除霜運転時に、補助送風機17を稼働させて、車室2内から第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から第2吹出口6を介して車外に流出する気流53を生じさせる。そのため、負荷側送風機13として、ファン(プロペラファン等)を負方向に回転させても送風量を確保できる送風機を採用せずに、熱源側熱交換器23の除霜運転における運転効率を向上することが可能となって、車両用空気調和装置10の自由度が拡張される。
以下、実施の形態4に係る車両用空気調和装置について説明する。
なお、実施の形態1~実施の形態3に係る車両用空気調和装置と重複する説明は、適宜簡略化又は省略している。
<車両用空気調和装置の構成及び動作>
実施の形態4に係る車両用空気調和装置の構成及び動作について説明する。
図5及び図6は、実施の形態4に係る車両用空気調和装置の、構成及び動作を説明するための図である。なお、図5は、車両1の車室2の天井裏3を上方視した状態での車両用空気調和装置10を示し、図6は、車両1を図5におけるB―B線で断面視した状態での車両用空気調和装置10を示している。また、図5では、暖房運転時の冷媒の流れを墨付きの実線矢印で示し、熱源側熱交換器23の除霜運転時の冷媒の流れを墨付きの点線矢印で示し、暖房運転時の流路切換装置22の流路を実線で示し、熱源側熱交換器23の除霜運転時の流路切換装置22の流路を点線で示している。
制御装置14は、第1ダンパ15を開状態とし、第2ダンパ16を閉状態とする。また、制御装置14は、負荷側送風機13Aを稼働させて、車室2内から車室2の天井等に形成された第1吸込口4を介して負荷側熱交換器25に流入し、負荷側熱交換器25から車室2の天井等に形成された第1吹出口5を介して車室2内に流入する気流51を生じさせる。
制御装置14は、第1ダンパ15を閉状態とし、第2ダンパ16を開状態とする。また、制御装置14は、補助送風機17を稼働させて、車室2内から車室2の天井等に形成された第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から負荷室3cに形成された第2吹出口6を介して車外に流出する気流53を生じさせる。
実施の形態4に係る車両用空気調和装置の作用について説明する。
車両用空気調和装置10では、制御装置14が、熱源側熱交換器23の除霜運転時に、補助送風機17を稼働させて、車室2内から第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から第2吹出口6を介して車外に流出する気流53を生じさせる。そのため、熱源側熱交換器23の除霜運転における運転効率が向上されたものであるにも関わらず、シロッコファン31が採用された負荷側送風機13Aを用いることができ、暖房運転における運転効率を向上することが可能である。
以下、実施の形態5に係る車両用空気調和装置について説明する。
なお、実施の形態1~実施の形態4に係る車両用空気調和装置と重複する説明は、適宜簡略化又は省略している。
<車両用空気調和装置の構成及び動作>
実施の形態5に係る車両用空気調和装置の構成及び動作について説明する。
図7は、実施の形態5に係る車両用空気調和装置の、構成及び動作を説明するための図である。なお、図7は、車両1を図1におけるA―A線に相当する線で断面視した状態での車両用空気調和装置10を示している。
制御装置14は、第1ダンパ15を開状態とし、第2ダンパ16を閉状態とする。また、制御装置14は、負荷側送風機13のファン(プロペラファン等)を正方向に回転させて、車室2内から車室2の天井等に形成された第1吸込口4を介して負荷側熱交換器25に流入し、負荷側熱交換器25から車室2の天井等に形成された第1吹出口5を介して車室2内に流入する気流51を生じさせる。
制御装置14は、第1ダンパ15を閉状態とし、第2ダンパ16を開状態とする。また、制御装置14は、負荷側送風機13のファン(プロペラファン等)を負方向に回転させて、車室2内から車室2の天井等に形成された第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から負荷室3cに形成された第2吹出口6を介して車外に流出する気流53を生じさせる。また、制御装置14は、ヒータ18を稼働させる。
制御装置14は、流路切換装置22の流路を切り換えて、圧縮機21の吐出側と熱源側熱交換器23とを連通させる。圧縮機21から吐出された高温高圧の冷媒は、熱源側熱交換器23に流入する。熱源側熱交換器23に流入した冷媒は、熱源側熱交換器23を通過する空気と熱交換して凝縮し、膨張装置24に流入する。膨張装置24で減圧された冷媒は、負荷側熱交換器25に流入し、負荷側熱交換器25を通過する空気と熱交換して蒸発し、圧縮機21に吸入される。
制御装置14は、ヒータ18を稼働させて、負荷側熱交換器25に付着した霜を溶解させる。制御装置14は、冷媒循環回路11の冷媒を循環させなくてもよく、また、流路切換装置22の流路を切り換えて、圧縮機21の吐出側と負荷側熱交換器25とを連通させて、冷媒循環回路11の冷媒を循環させてもよい。
実施の形態5に係る車両用空気調和装置の作用について説明する。
車両用空気調和装置10では、制御装置14が、熱源側熱交換器23の除霜運転時に、車室2内から第1吹出口5を介して負荷側熱交換器25に流入し、負荷側熱交換器25から第2吹出口6を介して車外に流出する気流53を生じさせるとともに、負荷側熱交換器25と第1吹出口5とを連通させる風路に配設されたヒータ18を稼働させる。そのため、熱源側熱交換器23の除霜運転における運転効率が更に向上される。
Claims (11)
- 圧縮機と、熱源側熱交換器と、膨張装置と、負荷側熱交換器と、が配管で接続された冷媒循環回路と、
前記冷媒循環回路の冷媒を循環させる暖房運転と、前記冷媒循環回路の冷媒を暖房運転時と逆方向に循環させる前記熱源側熱交換器の除霜運転と、を切り換える制御手段と、
を備え、
前記制御手段は、
暖房運転時に、前記負荷側熱交換器から第1吹出口を介して車室内に流入する気流を生じさせ、前記熱源側熱交換器の除霜運転時に、車室内から前記第1吹出口を介して前記負荷側熱交換器に流入する気流を生じさせる、
ことを特徴とする車両用空気調和装置。 - 暖房運転時に、前記負荷側熱交換器から前記第1吹出口を介して車室内に流入する気流を生じさせる負荷側送風機を備え、
前記制御手段は、前記熱源側熱交換器の除霜運転時に、前記負荷側送風機の送風方向を暖房運転時と反転させる、
ことを特徴とする請求項1に記載の車両用空気調和装置。 - 前記制御手段は、前記熱源側熱交換器の除霜運転時に、前記負荷側送風機のファンの回転方向を暖房運転時と反転させる、
ことを特徴とする請求項2に記載の車両用空気調和装置。 - 前記負荷側熱交換器から第2吹出口を介して車外に流出する気流を生じさせる補助送風機を備え、
前記制御手段は、前記熱源側熱交換器の除霜運転時に、前記補助送風機を稼働させる、
ことを特徴とする請求項1~3のいずれか一項に記載の車両用空気調和装置。 - 前記負荷側熱交換器から前記第1吹出口を介して車室内に流入する気流を生じさせる負荷側送風機と、
前記負荷側熱交換器から第2吹出口を介して車外に流出する気流を生じさせる補助送風機と、を備え、
前記負荷側送風機のファンは、シロッコファンであり、
前記制御手段は、前記熱源側熱交換器の除霜運転時に、前記補助送風機を稼働させる、
ことを特徴とする請求項1に記載の車両用空気調和装置。 - 暖房運転時に、開状態となって、車室内から第1吸込口を介して前記負荷側熱交換器に流入する気流を通過させる第1ダンパを備え、
前記制御手段は、前記熱源側熱交換器の除霜運転時に、前記第1ダンパを閉状態にする又は暖房運転時と比較して狭い開状態にする、
ことを特徴とする請求項4又は5に記載の車両用空気調和装置。 - 前記熱源側熱交換器の除霜運転時に、開状態となって、前記負荷側熱交換器から前記第2吹出口を介して車外に流出する気流を通過させる第2ダンパを備え、
前記制御手段は、暖房運転時に、前記第2ダンパを閉状態にする又は前記熱源側熱交換器の除霜運転時と比較して狭い開状態にする、
ことを特徴とする請求項4~6のいずれか一項に記載の車両用空気調和装置。 - 前記負荷側熱交換器と前記第1吹出口とを連通する風路にヒータが配設され、
前記制御手段は、前記熱源側熱交換器の除霜運転時に、前記ヒータを稼働させる、
ことを特徴とする請求項1~7のいずれか一項に記載の車両用空気調和装置。 - 前記制御手段は、前記負荷側熱交換器の除霜運転時に、前記ヒータを稼働させる、
ことを特徴とする請求項8に記載の車両用空気調和装置。 - 請求項1~9のいずれか一項に記載の車両用空気調和装置を備えた、
ことを特徴とする車両。 - 圧縮機と、熱源側熱交換器と、膨張装置と、負荷側熱交換器と、が配管で接続された冷媒循環回路を備え、前記冷媒循環回路の冷媒を循環させる暖房運転と、前記冷媒循環回路の冷媒を暖房運転時と逆方向に循環させる前記熱源側熱交換器の除霜運転と、を行う車両用空気調和装置の制御方法であって、
暖房運転時に、前記負荷側熱交換器から第1吹出口を介して車室内に流入する気流を生じさせ、前記熱源側熱交換器の除霜運転時に、車室内から前記第1吹出口を介して前記負荷側熱交換器に流入する気流を生じさせる、
ことを特徴とする車両用空気調和装置の制御方法。
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CN201580023131.4A CN106255607B (zh) | 2014-05-13 | 2015-04-20 | 车用空调装置、包括该车用空调装置的车辆以及车用空调装置的控制方法 |
EP15793250.0A EP3130493B1 (en) | 2014-05-13 | 2015-04-20 | Vehicular air conditioner, vehicle provided with same, and method for controlling vehicular air conditioner |
US15/308,639 US10538145B2 (en) | 2014-05-13 | 2015-04-20 | Vehicle air conditioning apparatus, vehicle including the same, and method for controlling vehicle air conditioning apparatus |
JP2016519182A JP6121056B2 (ja) | 2014-05-13 | 2015-04-20 | 車両用空気調和装置、それを備えた車両、及び、車両用空気調和装置の制御方法 |
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IT201900023745A1 (it) * | 2019-12-12 | 2021-06-12 | Mitsubishi Electric Hydronics & It Cooling Systems S P A | Unita' di condizionamento d'aria reversibile performante operazioni intelligenti di defrost |
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EP3130493B1 (en) | 2018-10-24 |
US10538145B2 (en) | 2020-01-21 |
EP3130493A4 (en) | 2017-09-27 |
EP3130493A1 (en) | 2017-02-15 |
CN106255607A (zh) | 2016-12-21 |
US20170190237A1 (en) | 2017-07-06 |
CN106255607B (zh) | 2018-10-12 |
JP6121056B2 (ja) | 2017-04-26 |
JPWO2015174218A1 (ja) | 2017-04-20 |
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