WO2022270593A1 - 熱媒体温調システム - Google Patents
熱媒体温調システム Download PDFInfo
- Publication number
- WO2022270593A1 WO2022270593A1 PCT/JP2022/025152 JP2022025152W WO2022270593A1 WO 2022270593 A1 WO2022270593 A1 WO 2022270593A1 JP 2022025152 W JP2022025152 W JP 2022025152W WO 2022270593 A1 WO2022270593 A1 WO 2022270593A1
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- WIPO (PCT)
- Prior art keywords
- heat
- heat medium
- refrigerant
- flow path
- temperature control
- Prior art date
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- 239000003507 refrigerant Substances 0.000 claims description 254
- 238000010438 heat treatment Methods 0.000 claims description 37
- 230000005856 abnormality Effects 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 2
- 230000007257 malfunction Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 20
- 238000001816 cooling Methods 0.000 description 20
- 230000006837 decompression Effects 0.000 description 18
- 230000005855 radiation Effects 0.000 description 16
- 230000002159 abnormal effect Effects 0.000 description 14
- 230000017525 heat dissipation Effects 0.000 description 14
- 238000011144 upstream manufacturing Methods 0.000 description 9
- 238000005338 heat storage Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000007791 dehumidification Methods 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
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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
- 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
- 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
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
-
- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
-
- 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—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
-
- 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—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
Definitions
- the present invention relates to a heat medium temperature control system equipped with a heat medium circuit.
- a temperature control system equipped with a heat medium circuit forms an independent heat medium circuit according to the controlled temperature of a temperature control target, and is adjusted to a predetermined temperature by heat exchange with a heat source such as a heat pump. It circulates the heat medium. At this time, by providing a switching valve in the heat medium circuit and connecting the independent heat medium circuits in series, the temperature of the circulating heat medium is adjusted (see Patent Document 1 below).
- An object of the present invention is to deal with such problems in a heat medium temperature control system. It is an object of the present invention to circulate and enable temperature control.
- the heat medium temperature control system of the present invention has the following configuration.
- a heat medium circuit for circulating a heat medium whose temperature is controlled by heat exchange with a heat source is provided, the heat medium circuit is provided with a pump for pumping the heat medium, and a plurality of temperature control targets that exchange heat with the temperature control targets.
- a heat medium temperature control system comprising a heat exchanger, wherein the heat medium circuit forms a series flow path connecting the pump and the plurality of temperature control target heat exchangers in the event of a system abnormality.
- Medium temperature control system Medium temperature control system.
- the heat medium temperature control system with these features can maintain the serial flow path by forming a series flow path that connects the pump and multiple temperature control target heat exchangers even when a system abnormality occurs. It is possible to control the temperature of a large number of connected temperature control targets by means of a heat medium whose temperature is controlled.
- FIG. 2 is an explanatory diagram showing a configuration example (switching valves V1 to V4 are in default states) of the heat medium temperature control system according to the embodiment of the present invention; Explanatory drawing of the flow-path switching apparatus in a heat-medium circuit. Explanatory diagrams showing switching states of the switching valves V1 to V4 ((a) is the default state, (b) is the non-default state). Explanatory diagrams showing switching states of switching valves V5 and V6 ((a) is the default state, (b) is the non-default state).
- FIG. 1 is an explanatory diagram showing a configuration example (switching valves V1 to V4 are in default states) of the heat medium temperature control system according to the embodiment of the present invention
- Explanatory drawing of the flow-path switching apparatus in a heat-medium circuit Explanatory diagrams showing switching states of the switching valves V1 to V4 ((a) is the default state, (b) is the non-default state).
- FIG. 2 is an explanatory diagram showing a configuration example of the heat medium temperature control system (switching valves V1 to V4 are in a non-default state) according to the embodiment of the present invention;
- Explanatory drawing of a refrigerant circuit control apparatus Explanatory diagrams showing operation modes of the refrigerant circuit during abnormal operation ((a) and (d) are examples of two-step pressure reduction, (b) and (c) are examples of one-step pressure reduction)
- Explanatory drawing showing the state of the air mix door of the indoor air conditioner at the time of abnormal operation ((a) is an example of blocking the upstream side of the heater core, (b) is an example of blocking the single air flow path of the cooler core).
- a table summarizing abnormal operation modes and operation modes of the heat medium temperature control system.
- the heat medium temperature control system 1 includes a heat medium circuit 100.
- the heat medium temperature control system 1 constructs a heat management system for a vehicle such as an EV (Electric Vehicle).
- the heat medium circuit 100 circulates a heat medium whose temperature is controlled by heat exchange with the refrigerant circuit 1U serving as a heat source.
- the plurality of temperature-controlled heat exchangers are used to control the temperature of the heater core 51 and the cooler core 52 of the indoor air conditioner 50, and the temperature-controlled objects such as the battery, the inverter, the motor, and the power control unit. of heat exchangers 60, 61, 62, 63 for temperature control objects.
- the heat medium circuit 100 also includes switching valves V1, V2, V3, V4, V5, and V6. As shown in FIG. 2, these switching valves V1 to V6, together with a control device 200 that controls switching of the switching valves V1 to V6, constitute a channel switching device 100A.
- the flow path switching device 100A switches between the default state shown in FIGS. 3 and 4(a) and the non-default state shown in FIGS. 3 and 4(b) when switching the switching valves V1 to V6.
- the default state is a state that is switched (returns to the initial state) when the system malfunctions.
- the non-energized state of the flow path switching device 100A is the default state.
- the switching valve V1 in the default state causes the heat medium flowing in from the flow path 110 to flow out to the flow path 112 side, and the heat medium flowing in from the flow path 102 to flow out to the flow path 111 side. Further, the switching valve V1 in the non-default state causes the heat medium flowing from the flow path 110 to flow toward the flow path 111 side, and the heat medium flowing from the flow path 102 side to flow toward the flow path 112 side.
- the switching valve V2 in the default state causes the heat medium flowing in from the flow path 120 to flow out to the flow path 122 side, and the heat medium flowing in from the flow path 123 to flow out to the flow path 121 side. Further, the switching valve V2 in the non-default state causes the heat medium flowing in from the flow path 120 to flow out to the flow path 121 side, and the heat medium flowing in from the flow path 123 to flow out to the flow path 122 side.
- the switching valve V3 in the default state causes the heat medium flowing in from the flow path 130 to flow out to the flow path 131 side, and the heat medium flowing in from the flow path 133 to flow out to the flow path 132 side. Further, the switching valve V3 in the non-default state causes the heat medium flowing in from the flow path 130 to flow out to the flow path 132 side, and the heat medium flowing in from the flow path 133 to flow out to the flow path 131 side.
- the switching valve V4 in the default state causes the heat medium flowing in from the flow path 132 to flow out to the flow path 142 side, and the heat medium flowing in from the flow path 140 to flow out to the flow path 141 side. Further, the switching valve V4 in the non-default state causes the heat medium flowing in from the flow path 132 to flow out to the flow path 141 side, and the heat medium flowing in from the flow path 140 to flow out to the flow path 142 side.
- the switching valve V5 in the default state allows the heat medium flowing in from the flow path 131 to flow out to the flow path 150 side, and the switching valve V5 in the non-default state allows the heat medium flowing in from the flow path 131 to pass through the flow path 150 without passing through the flow path 150. Flow through the flow path 151 to the confluence portion 150A. Further, the switching valve V6 in the default state allows the heat medium flowing in from the flow path 103 to flow out to the flow path 160 side, and the switching valve V6 in the non-default state allows the heat medium flowing in from the flow path 103 to flow to the flow path 160. flow through the flow path 161 to the confluence portion 161A.
- the heat medium circuit 100 includes the pumps P1, P2, and P3 and a plurality of temperature control target heat exchangers (heater core 51, cooler core 52, temperature control target heat exchangers). 60, 61, 62, 63) are formed. That is, the heat medium circulating in the series flow path 100T in the heat medium medium circuit 100 includes a plurality of pumps P1, P2, and P3 and a plurality of temperature control target heat exchangers (heater core 51, cooler core 52, temperature control target heat It circulates through all the exchangers 60, 61, 62, 63).
- the heat medium from the pump P1 enters the heater core 51 through the flow path 101 passing through the refrigerant heat medium heat exchanger 11 in the refrigerant circuit 1U, and passes through the heater core 51.
- the exiting heat medium enters the switching valve V1 via the flow path 110 .
- the heat medium exiting the switching valve V1 enters the tank 6 through the flow path 112, and the heat medium exiting the tank 6 enters the switching valve V2 through the flow path 120.
- the heat medium exiting the switching valve V2 enters the external heat exchanger 5 that exchanges heat with the outside air through the flow path 122, and the heat medium exiting the external heat exchanger 5 flows through the flow path 133 into the switching valve V2.
- the heat medium entering V3 and exiting the switching valve V3 enters the switching valve V4 through the flow path 132, and the heat medium exiting the switching valve V4 enters the pump P3 through the flow path 142.
- the heat medium exiting the pump P3 enters the switching valve V6 through the flow path 103 passing through the refrigerant heat medium heat exchanger 13 in the refrigerant circuit 1U, and the heat medium exiting the switching valve V6 flows through the flow path 160.
- the heat medium that has entered the cooler core 52 and exited the cooler core 52 enters the switching valve V4 via the flow path 140 .
- the heat medium exiting the switching valve V4 enters the switching valve V2 through the flow path 141, the confluence portion 161A, and the flow path 123, and the heat medium exiting the switching valve V2 passes through the flow path 121, the battery temperature control temperature.
- the heat medium exiting the switching valve V3 enters the switching valve V5 via the flow path 131 .
- the heat medium exiting the switching valve V5 enters the pump P2 via the flow path 150 passing through the heat exchangers 63, 61, and 62 and the junction 150A.
- the heat medium exiting the pump P2 enters the switching valve V1 through the flow path 102 passing through the refrigerant heat medium heat exchanger 12 in the refrigerant circuit 1U. Then, the heat medium exiting the switching valve V1 returns to the pump P1 via the flow path 111. As shown in FIG.
- the flow path 102 is provided with an auxiliary heat source 7 for heating the heat medium, if necessary.
- the heat medium circuit 100 as shown in FIG. is formed, one of the pumps P1, P2, and P3 is provided for each independent circuit, and one of the heat exchangers to be temperature-controlled is provided for each independent circuit.
- the heat medium exiting the pump P1 is pumped through the flow path 101, the heater core 51, the flow path 110, the switching valve V1, and the flow path 111 passing through the refrigerant heat medium heat exchanger 11 of the refrigerant circuit 1U.
- the heat medium discharged from the pump P2 passes through the refrigerant heat medium heat exchanger 12 of the refrigerant circuit 1U. , temperature control object heat exchanger 60, flow path 130, switching valve V3, flow path 132, switching valve V4, flow path 141, confluence portion 161A, flow path 123, switching valve V2, flow path 122, external heat exchange 5, the flow path 133, the switching valve V3, the flow path 131, the switching valve V5, the flow path 150 (heat exchangers 63, 61, 62 for temperature control objects), the second form an independent circuit of
- the heat medium discharged from the pump P3 passes through the refrigerant heat medium heat exchanger 13 of the refrigerant circuit 1U, the flow path 103, the switching valve V6, the flow path 160, the cooler core 52, the flow path 140, the switching valve V4, and the flow path.
- a third independent circuit is formed via 142 back to pump P3.
- the refrigerant circuit 1U in FIG. 1 will be described.
- the refrigerant circuit 1U includes a compressor 10 that compresses refrigerant, and a refrigerant circulation flow path that condenses, expands, and evaporates the refrigerant discharged from the compressor 10 and returns it to the compressor 10 .
- a refrigerant heat medium heat exchange unit 11 provided downstream of the compressor 10
- a refrigerant heat medium heat exchanger 12 provided downstream thereof
- a refrigerant heat medium heat exchanger provided upstream of the compressor 10.
- the exchanger 13 serves as a heat exchanger that exchanges heat between the heat medium and the refrigerant in the heat medium circuit 100 .
- Each of the independent circuits of the heat medium circuit 100 described above is provided with at least one refrigerant heat medium heat exchanger.
- the refrigerant circuit 1U includes three heat exchangers (refrigerant heat medium heat exchangers 11, 12, and 13) in the illustrated example, but may include four or more heat exchangers as necessary. can.
- Refrigerant circuit 1U selects two or more of at least three heat exchangers, and causes a part of the selected heat exchangers to function as a condenser and the other part to function as an evaporator.
- the above-described heat exchanger is selected by opening and closing the on-off valves 31V and 32V to selectively open and close the bypass refrigerant flow paths 31 and 32, and the downstream side of the compressor 10
- a heat exchanger close to the compressor 10 functions as a condenser
- a heat exchanger downstream from the compressor 10 and far from the compressor 10 functions as an evaporator.
- the refrigerant circuit 1U includes a refrigerant flow path 20, one end of which is connected to the outlet of the compressor 10 and the other end of which is connected to the inlet of the refrigerant heat medium heat exchange section 11, and the outlet of the refrigerant heat medium heat exchange section 11.
- a refrigerant flow path 21 having one end connected to the refrigerant heat medium heat exchange unit 12 and the other end connected to the inlet of the refrigerant heat medium heat exchange unit 12, and an inlet of the refrigerant heat medium heat exchange unit 13 having one end connected to the outlet of the refrigerant heat medium heat exchange unit 12 and a refrigerant flow path 23 having one end connected to the outlet of the refrigerant heat medium heat exchange unit and the other end connected to the inlet of the compressor 10 .
- the refrigerant circuit 1U includes decompression sections 14A and 14B.
- the decompression units 14A and 14B decompress the high-pressure refrigerant compressed by the compressor 10 to a predetermined pressure.
- a pressure reducing portion 14A is provided in the refrigerant passage 21 between them, and a pressure reducing portion 14B is provided in the refrigerant passage 22 between the refrigerant heat medium heat exchange portion 12 and the refrigerant heat medium heat exchange portion 13 .
- the decompression section 14A and the decompression section 14B can be individually adjusted, and by arbitrarily adjusting from the fully open state to the fully closed state, the compressed refrigerant can be decompressed to a predetermined pressure.
- the bypass refrigerant flow paths 31 and 32 are provided so as to selectively bypass either the refrigerant heat medium heat exchange section 12 or the refrigerant heat medium heat exchange section 13.
- the bypass refrigerant flow path 31 can bypass the refrigerant heat medium heat exchange section 12
- the bypass refrigerant flow path 32 can bypass the refrigerant heat medium heat exchange section 13 .
- the bypass refrigerant flow path 31 has a branch portion 31A provided in the refrigerant flow path 21, and a junction portion 31B provided in the refrigerant flow path 22.
- the branch portion 31A is provided upstream of the decompression portion 14A.
- 31B is provided on the upstream side of the decompression section 14B.
- the bypass coolant channel 32 has a branch portion 32A provided in the coolant channel 22 and a junction portion 32B provided in the coolant channel 23.
- the branch portion 32A is upstream of the junction portion 31B of the bypass coolant channel 31. is provided in Thereby, the confluence portion 31B of the bypass refrigerant flow path 31 is provided between the branch portion 32A of the bypass refrigerant flow path 32 and the refrigerant heat medium heat exchange portion 13 .
- branching portion 32A of the bypass refrigerant flow path 32 is provided upstream of the junction 31B of the decompression portion 14B and the bypass refrigerant flow path 31, and the branching portion 32A of the bypass refrigerant flow path 32 joins the bypass refrigerant flow path 31.
- a backflow prevention means for example, a check valve 15 is provided between the portion 31B and the portion 31B.
- the refrigerant circuit 1U as shown in FIG. the heat medium can be generated in various temperature ranges, and in combination with the switching of the flow path switching device 100A of the heat medium circuit 100 described above, an abnormal operation mode and various operation modes described later can be executed. can be done.
- the refrigerant circulation flow path including the bypass refrigerant flow paths 31 and 32 can be accommodated in the unit U indicated by the single-dotted dashed line in the drawing, so that the refrigerant circuit 1U can be compactly unitized. .
- the flow path switching device 100A when a system abnormality occurs, the flow path switching device 100A is brought into a default state, so that the heat medium circuit 100 forms a series flow path 100T as shown in FIG. do.
- the series flow path 100T is formed, for example, even if one of the pumps P1, P2, and P3 malfunctions, if one of the pumps P1, P2, and P3 operates, the series A temperature-controlled heat medium can be circulated in the flow path 100T, and necessary temperature control can be performed for the temperature control target connected in series by the serial flow path 100T.
- the refrigerant circuit 1U In the operation mode at the time of system abnormality in which the flow path switching device 100A is in the default state, when the refrigerant circuit 1U is operating, the refrigerant circuit 1U is controlled by the refrigerant circuit control device 1A as shown in FIG. 8(d), and the indoor air conditioner 50 performs the cooling operation (abnormal operation mode 1) by switching the air flow path as shown in FIGS. and heating operation (abnormal operation mode 2).
- the refrigerant circuit 1U executes the operation modes shown in FIGS. First, the air flow path passing through the heater core 51 is blocked.
- the on-off valves 31V and 32V are closed as shown in FIG.
- the heat medium heat exchanger 13 is made to function as an evaporator.
- the refrigerant heat medium heat exchanger 11 and the refrigerant heat medium heat exchanger 12 release the heat of the refrigerant step by step.
- the pressure reducing section 14A is fully opened, heat is radiated by the refrigerant heat medium heat exchanger 11 and the refrigerant heat medium heat exchanger 12, the pressure is reduced in one step by the pressure reducing section 14B, and the refrigerant heat medium heat exchanger 13 is You may make it function as an evaporator.
- the on-off valve 31V is opened (the on-off valve 32V is closed) and the refrigerant flows through the bypass refrigerant flow path 31 that bypasses the refrigerant heat medium heat exchanger 12, thereby exchanging refrigerant heat medium heat.
- the device 11 is made to function as a condenser, and the refrigerant heat medium heat exchanger 13 is made to function as an evaporator.
- the decompression at this time is a one-stage decompression in the decompression section 14B.
- the on-off valves 31V and 32V are both opened to flow the refrigerant through the bypass refrigerant flow paths 31 and 32, thereby supplying the refrigerant in parallel to the refrigerant heat medium heat exchangers 12 and 13.
- Refrigerant heat medium heat exchanger 11 is made to function as a condenser, and refrigerant heat medium heat exchangers 12 and 13 are made to function as evaporators in parallel.
- the pressure is reduced in one stage by the pressure reduction units 14A and 14B.
- the series flow path 100T in the heat medium circuit 100 includes an external heat exchanger 5 that exchanges heat between the heat medium and the outside air, a refrigerant heat medium heat exchanger 13 that functions as an evaporator, a cooler core 52, and an object for temperature control.
- a heat medium is flowed through the heat exchangers 60, 63, 61, 62 in this order.
- the heat medium heated by passing through the refrigerant heat medium heat exchanger 11 or the refrigerant heat medium heat exchanger 12 on the radiation side emits heat to the outside in the external heat exchanger 5, and then the refrigerant It enters the heat medium heat exchanger 11 .
- the low-temperature heat medium absorbed by the refrigerant heat medium heat exchanger 13 functioning as an evaporator is sent to the cooler core 52 via the flow path 103, the switching valve V6, and the flow path 160, whereupon the indoor air conditioner 50 It exchanges heat with the indoor air and is used for cooling.
- the heat medium coming out of the cooler core 52 is the flow path 140, the switching valve V4, the flow path 141, the confluence portion 161A, the flow path 123, the switching valve V2, the flow path 121, the heat exchanger for temperature control object 60, By flowing through the flow path 150 passing through the flow path 130, the switching valve V3, the flow path 131, the switching valve V5, and the temperature control target heat exchangers 63, 61, 62, the temperature control target (battery, power control unit , inverters, motors, etc.).
- the heat medium flows through the flow path 102 and the flow path 101 and is heated by heat radiation in the refrigerant heat medium heat exchanger 12 and the refrigerant heat medium heat exchanger 11 that function as condensers.
- the indoor air conditioner 50 by closing the air mix door 53 provided on the upstream side of the air flow path of the heater core 51, the air during cooling by the heater core 51 Heat can be suppressed.
- the opening degree of the air mix door 53 the cooling temperature can be adjusted.
- the heat medium exiting the heater core 51 is sent to the refrigerant heat medium heat exchanger 13, which is an evaporator, after radiating heat in the external heat exchanger 5, as described above.
- the refrigerant circuit 1U executes the operation modes shown in FIGS. As shown in b), the air flow path that passes through only the cooler core 52 and flows into the vehicle interior is cut off.
- the refrigerant heat medium heat exchanger 11 functions as a condenser, and the refrigerant heat medium heat exchangers 12 and 13 function as evaporators.
- the refrigerant heat medium heat exchangers 12 and 13 function as evaporators.
- stepwise heat absorption is performed in the refrigerant heat medium heat exchanger 12 and the refrigerant heat medium heat exchanger 13.
- the decompression unit 14B is fully opened, the refrigerant heat medium heat exchanger 11 is made to function as a condenser, the decompression unit 14A performs one-stage decompression, and the refrigerant heat medium heat exchanger 12 and the refrigerant heat medium heat exchanger 13 are You may make it function as an evaporator.
- the operation modes shown in FIGS. 7B and 7C are as described above.
- the heat medium flows through the refrigerant heat medium heat exchanger 11 functioning as a condenser, the heater core 51, and the external heat exchanger 5 in this order.
- the heat medium heated by the heat radiation in the refrigerant heat medium heat exchanger 11 functioning as a condenser is sent to the heater core 51 through the flow path 101, and the room air conditioner 50 heats the room air. It is replaced and used for heating.
- the heat medium that is absorbed by the refrigerant heat medium heat exchanger 13 is sent to the cooler core 52 .
- heat is absorbed stepwise by the refrigerant heat medium heat exchanger 12 and the refrigerant heat medium heat exchanger 13, and the serial flow path 100T on the inlet side of the refrigerant heat medium heat exchanger 13 includes an external heat exchanger. 5 are provided, and heat exchangers 60 , 63 , 61 , 62 for temperature control objects are provided in the series flow path 100 T on the inlet side of the refrigerant heat medium heat exchanger 12 .
- the heat of the heat medium that has exchanged heat with the outside air in the external heat exchanger 5 can be absorbed by the refrigerant in the refrigerant heat medium heat exchanger 13 .
- the heat of the heat medium that has exchanged heat with the temperature control target can be absorbed by the refrigerant in the refrigerant heat medium heat exchanger 12 .
- heat is generated by the operation of the refrigerant circuit 1U, and the refrigerant heat medium heat exchanger 11 heats the heat medium sent to the heater core 51, thereby performing the heating operation.
- the refrigerant heat medium heat exchanger 13 which functions as an evaporator, flows out of the heater core 51 and heat-exchanged in the external heat exchanger 5, so that the refrigerant heat medium heat exchanger 13
- the temperature of the exiting heat medium can be set to a relatively high temperature compared to the circuit in which the heat medium does not flow in the order of the heater core 51, the external heat exchanger 5, and the refrigerant heat medium heat exchanger 13, as shown in FIG. can.
- the refrigerant heat medium heat exchanger 12 is made to function as an evaporator. 7(c) and 7(d). Further, by switching to the operation mode of the refrigerant circuit shown in FIG. 7(c) or FIG. 7(c) and 7(d) suppress the temperature of the heat medium supplied to the cooler core 52 from dropping too much, compared to FIG. 7(b). It is possible to suppress the influence on comfort during heating.
- the heat medium exchanges heat with the outside air in the external heat exchanger 5. can be suppressed. According to this, the warm heat medium coming out of the heater core 51 can be sent directly to the refrigerant heat medium heat exchanger 13 which is an evaporator. This also prevents the temperature of the heat medium that exits the refrigerant heat medium heat exchanger 13 and is sent to the cooler core 52 from becoming too low.
- the blowout temperature during heating operation can be made higher than that during heat exchange with outside air.
- the air mix door 53 in the indoor air conditioner 50 is switched so that all the blown air passes through the heater core 51, as shown in FIG. 8(b).
- the heating temperature can be adjusted by providing the auxiliary heat source 7 whose temperature can be adjusted on the inlet side of the heater core 51 (for example, on the upstream side of the pump P1).
- the refrigerant circuit 1U does not operate (such as a failure of the compressor 10) as an operation mode at the time of system abnormality in which the flow path switching device 100A is in the default state, the circulation of the heat medium in the series flow path 100T is performed appropriately. Realize the mode of operation.
- One of the operation modes (abnormal operation mode 3) at that time is based on the premise that the auxiliary heat source 7 whose temperature can be adjusted is provided on the inlet side of the heater core 51 in the series flow path 100T (for example, the upstream side of the pump P1). heating operation and battery heating.
- the temperature of the heat medium circulating in the series flow path 100T is set to 60° C. at the outlet of the heater core 51 by the heat radiation in the heater core 51, and the external heat exchanger 5 provided downstream of the heater core 51
- the temperature at the outlet of the external heat exchanger 5 is set to 50° C. by heat dissipation
- the temperature at the outlet of the cooler core 52 is set to 40° C. by heat dissipation in the cooler core 52 provided on the downstream side of the external heat exchanger 5 .
- the temperature of the heat medium in the temperature control object heat exchanger 60 for the battery provided on the downstream side of the cooler core 52 is lowered to a temperature range suitable for heating the battery. be able to.
- Another operation mode (abnormal operation mode 4) when the refrigerant circuit 1U does not operate is heat radiation from a temperature control object (battery, power control unit, inverter, motor, etc.) by circulation of the heat medium in the series flow path 100T. .
- the auxiliary heat source 7 is not used (operation is stopped), and the external heat exchanger 5 provided in the serial flow path 100T radiates heat from the object to be temperature controlled.
- the indoor air conditioner 50 it is possible to suppress heat release into the room.
- the table shown in FIG. 9 summarizes the abnormal operation modes and operation modes of the heat medium temperature control system 1 .
- "a" in the table indicates that the switching valves V1-V6 are in the default state
- "b” indicates that the switching valves V1-V6 are in the non-default state.
- the abnormal operation modes 1 to 4 in which the switching valves V1 to V6 in the flow path switching device 100A of the heat medium circuit 100 are all in the default state are as described above.
- Operation modes 1 to 13 shown in the table can be executed by appropriately controlling 100A and the refrigerant circuit control device 1A.
- the switching valve V3 is set to the non-default state, and the other switching valves V1, V2, V4 to V6 are set to the default state, so that an independent circuit including the pump P3, the pump P1 and the pump Form an independent circuit with P2 in series.
- both the on-off valves 31V and 32V are closed, the pressure reduction amounts of the pressure reduction units 14A and 14B are appropriately adjusted, the pressure reduction unit 14A is substantially fully opened, and the pressure reduction unit 14B performs desired pressure reduction.
- the refrigerant heat medium heat exchanger 11 and the refrigerant heat medium heat exchanger 12 function as a condenser (radiation side), and the refrigerant heat medium heat exchanger 13 functions as an evaporator (heat absorption side).
- an independent circuit of the pump P3 in the heat medium circuit 100 is provided with the heat absorption side refrigerant heat medium heat exchanger 13, the cooler core 52, and the temperature control object heat exchanger 60 for the battery, and the room is cooled. and battery cooling.
- the independent circuits of the pumps P1 and P2 in the heat medium circuit 100 include refrigerant heat medium heat exchangers 11 and 12 on the radiation side, a heater core 51, a tank 6, an external heat exchanger 5, and a heat exchanger for a temperature control object.
- Heat dissipation destinations are distributed to heat storage in the tank 6, release to the outside air in the external heat exchanger 5, temperature control in the heat exchangers 63, 61, 62 for temperature control objects, etc. be done. According to this, efficient heat utilization is possible by dispersing and dissipating the heat absorbed by actively performing room cooling and battery cooling.
- the switching valves V3 and V4 are set to the non-default state, and the other switching valves V1, V2, V5, and V6 are set to the default state, whereby an independent circuit including the pump P3 and the pump P1 and pump P2 in series to form an independent circuit.
- the refrigerant circuit 1U in operation mode 2 is the same as in operation mode 1. The difference from operation mode 1 is that cooling of the battery is stopped and the indoor air conditioner 50 is operated for cooling.
- the switching valves V3 and V6 are set to the non-default state, and the other switching valves V1, V2, V4, and V5 are set to the default state, whereby an independent circuit including the pump P3 and the pump P1 and pump P2 in series to form an independent circuit.
- the refrigerant circuit 1U in operation mode 3 is the same as in operation modes 1 and 2.
- operation mode 3 the cooling operation of the indoor air conditioner 50 in operation mode 1 is stopped, and the battery is actively cooled. Only the temperature-controlled object heat exchanger 60 for the battery is provided.
- the heat medium circuit 100 in the operation mode 4 has the switching valves V1 and V3 in the non-default state and the other switching valves V2 and V4 to V6 in the default state, so that the independent circuit including the pump P1 and the pump P2 are included.
- An independent circuit and an independent circuit including pump P3 are formed.
- the refrigerant circuit 1U in operation mode 4 is similar to operation modes 1 to 3, but the pressure reduction in the pressure reduction units 14A and 14B is performed stepwise by the pressure reduction units 14A and 14B.
- the independent circuit including the pump P1 is provided with the heat dissipation side refrigerant heat medium heat exchanger 11 and the heater core 51, and the independent circuit including the pump P2 is provided with the heat dissipation side refrigerant heat.
- a medium heat exchanger 12, a tank 6, an external heat exchanger 5, and temperature control object heat exchangers 63, 61, and 62 are provided.
- a cooler core 52 and a heat exchanger 60 for a temperature control object for the battery are provided.
- Operation mode 4 is an operation mode in which dehumidification and cooling (radiation temperature control) is performed. Similar to operation mode 1, the indoor air conditioner 50 is cooled by an independent circuit on the heat absorption side while the battery is cooled. Dehumidification is performed by providing a heater core 51 in an independent circuit. In this operation mode 4, cooling/dehumidification and battery cooling are performed on the heat absorption side, while on the heat dissipation side, the high temperature heat medium flowing through the independent circuit of the pump P1 is used to perform air conditioning to the target outlet temperature, and the heat medium flows through the independent circuit of the pump P2. A low-temperature heat medium can be used to control the temperature of various places.
- the heat medium circuit 100 in operation mode 5 includes the independent circuit including the pump P1 and the pump P2 by setting the switching valves V1, V3, and V4 to the non-default state and the switching valves V2, V5, and V6 to the default state.
- An independent circuit and an independent circuit including pump P3 are formed.
- both the on-off valves 31V and 32V are opened, and the refrigerant is compressed from the compressor 10 via the heat medium heat exchanger 11, the bypass refrigerant flow path 31, and the refrigerant heat medium heat exchanger 13.
- the refrigerant circuit of the first system (bypassing the refrigerant heat medium heat exchanger 12) returning to the compressor 10, the refrigerant heat medium heat exchanger 11, the refrigerant heat medium heat exchanger 12, and the bypass refrigerant flow path 32 from the compressor 10 It constitutes a second refrigerant circuit that returns to the compressor 10 via the refrigerant (bypasses the refrigerant heat medium heat exchanger 13).
- the refrigerant heat medium heat exchanger 11 functions as a condenser (radiation side)
- the refrigerant heat medium heat exchanger 12 functions as an evaporator (heat absorption side) in the second system refrigerant circuit.
- the refrigerant heat medium heat exchanger 13 functions as an evaporator (heat absorption side) in the refrigerant circuit of the first system.
- the heat medium circuit 100 in operation mode 5 includes an independent circuit including the pump P1, which is provided with the heat radiation side refrigerant heat medium heat exchanger 11 and the heater core 51, and an independent circuit including the pump P2, which is provided with the heat absorption side refrigerant heat medium.
- a heat exchanger 12, a tank 6, an external heat exchanger 5, and heat exchangers 63, 61, and 62 for temperature control objects are provided.
- a cooler core 52 is provided.
- This operation mode 5 is an operation mode in which dehumidification and heating (heat absorption temperature control) is performed.
- the heat absorption side is divided into an independent circuit having a refrigerant heat medium heat exchanger 12 and an independent circuit having a refrigerant heat medium heat exchanger 13, and heat required for heating operation is absorbed from various places. Further, by providing the cooler core 51 alone in the independent circuit having the refrigerant heat medium heat exchanger 13 on the heat absorption side, the interior of the vehicle is effectively dehumidified.
- the switching valves V1, V2, V5, and V6 are set to the non-default state, and the other switching valves V3 and V4 are set to the default state, so that the independent circuit including the pump P1 and the pump P2 and an independent circuit including pump P3.
- the refrigerant circuit 1U in operation mode 6 both the on-off valves 31V and 32V are closed, and the refrigerant heat medium heat exchanger 11 and the refrigerant heat medium heat exchanger 12 are connected to the condensers (radiation side) as in the operation mode 4.
- the refrigerant heat medium heat exchanger 13 is used as an evaporator (heat absorption side), and the amount of pressure reduction in the pressure reducing units 14A and 14B is adjusted, and the refrigerant heat medium heat exchanger 11 and the refrigerant heat medium heat exchanger 12 are stepwise heat dissipation.
- the independent circuit including the pump P1 is provided with the heat dissipation side refrigerant heat medium heat exchanger 11 and the heater core 51, and the independent circuit including the pump P2 is provided with the heat dissipation side refrigerant heat medium heat.
- An exchanger 12, a tank 6, and a heat exchanger 60 for a temperature control object are provided, and an independent circuit including a pump P3 is provided with a heat absorption side refrigerant heat medium heat exchanger 13 and an external heat exchanger 5.
- This operation mode 6 is an operation mode in which heat is absorbed from the outside air and the battery is heated (warmed up) while the indoor air conditioner 50 is operated for heating. Warm water is supplied to the heater core 51 to perform the heating operation of the indoor air conditioner 50, and relatively low-temperature warm water flowing through the refrigerant heat medium heat exchanger 12 on the other radiation side is supplied to the heat exchanger 60 for temperature control object. to heat the battery. According to this, heating and battery heating can be performed at desired temperatures with good thermal efficiency by generating heat medium in different temperature ranges using the refrigerant circuit 1U.
- the switching valves V1, V2, and V6 are set to the non-default state, and the other switching valves V3, V4, and V5 are set to the default state, so that an independent circuit including the pump P1 and a pump P2 and an independent circuit including pump P3.
- the refrigerant circuit 1 in operation mode 7 opens the on-off valve 31V, closes the on-off valve 32V, and closes the decompression unit 14A, so that from the compressor 10 to the refrigerant heat medium heat exchanger 11, the bypass refrigerant flow path 31, the refrigerant A circuit is configured to return to the compressor 10 via the heat medium heat exchanger 13 (bypassing the refrigerant heat medium heat exchanger 12).
- the heat medium circuit 100 in the operation mode 7 is provided with the refrigerant heat medium heat exchanger 11 on the radiation side and the heater core 51 in the independent circuit including the pump P1, and the independent circuit including the pump P2 is provided with a refrigerant heat exchanger that does not exchange heat with the refrigerant.
- a medium heat exchanger 12, a tank 6, and heat exchangers 60, 61, 62, and 63 for temperature control objects are provided. 5 is provided.
- This operation mode 7 is an operation mode in which the indoor air conditioner 50 is operated for heating by absorbing heat from the outside air while accumulating waste heat from a temperature control object such as a battery. , the heat medium flowing through the heat exchangers 60, 61, 62, 63 for temperature control objects is separated from the refrigerant circuit 1U, and the circuit is provided with a tank 6 for heat storage or waste heat. According to this, it is possible to efficiently store the heat of the temperature control object such as the battery as waste heat.
- the heat medium circuit 100 in operation mode 8 sets the switching valves V1, V2, V6 to the non-default state and the other switching valves V3, V4, V5 to the default state, thereby forming an independent circuit including the pump P1 and the pump P2 and an independent circuit including pump P3.
- the refrigerant circuit 1U opens the on-off valves 31V and 32V, and similarly to the operation mode 5, the refrigerant circuit of the first system bypassing the refrigerant heat medium heat exchanger 12 and the refrigerant heat medium heat exchanger 13. constitutes a second refrigerant circuit that bypasses the
- the independent circuit including the pump P1 is provided with the heat dissipation side refrigerant heat medium heat exchanger 11 and the heater core 51, and the independent circuit including the pump P2 is provided with the heat absorption side refrigerant heat medium heat.
- An exchanger 12, a tank 6, and heat exchangers 60, 61, 62, and 63 for temperature control objects are provided. are provided.
- the operation mode 8 is an operation mode in which heat is stored in a temperature control object such as a battery while performing heating operation of the indoor air conditioner 50 by absorbing heat from the outside air.
- a temperature control object such as a battery
- the heat necessary for heating is procured together with the outside air heat absorption.
- the heat medium circuit 100 in the operation mode 9 has the switching valves V1 and V2 in the non-default state and the other switching valves V3 to V6 in the default state, thereby forming an independent circuit including the pump P1 and an independent circuit including the pump P2. forming Moreover, the pump P3 is stopped here.
- the refrigerant circuit 1U in operation mode 9 forms a refrigerant circuit that bypasses the refrigerant heat medium heat exchanger 13 by closing the on-off valve 31V, opening the on-off valve 32V, and closing the decompression unit 14B. At this time, the refrigerant heat medium heat exchanger 13 is disconnected from the refrigerant circuit 1, and the flow path 103 passing through the refrigerant heat medium heat exchanger 13 and the flow path through which the heat medium flows to the cooler core 52 are not used.
- the independent circuit including the pump P1 is provided with the heat dissipation side refrigerant heat medium heat exchanger 11 and the heater core 51, and the independent circuit including the pump P2 is provided with the heat absorption side refrigerant heat medium heat.
- An exchanger 12, a tank 6, and heat exchangers 60, 61, 62, 63 for temperature control objects are provided.
- This operation mode 9 is an operation mode in which the indoor air conditioner 50 is operated for heating by utilizing heat storage. A heating operation is performed by absorbing heat stored in a temperature control object such as a battery.
- the switching valves V1, V3, V5, and V6 are set to the non-default state, and the other switching valves V2 and V4 are set to the default state, so that an independent circuit including the pump P1 and a pump P2 and an independent circuit including pump P3.
- both the on-off valves 31V and 32V are closed, and the refrigerant heat medium heat exchanger 11 and the refrigerant heat medium heat exchanger 12 are connected to the condensers (radiation side) as in the operation mode 4 and the like.
- the refrigerant heat medium heat exchanger 13 functions as an evaporator (heat absorption side).
- the independent circuit including the pump P1 is provided with the heat dissipation side refrigerant heat medium heat exchanger 11 and the heater core 51, and the independent circuit including the pump P2 is provided with the heat dissipation side refrigerant heat medium heat.
- An exchanger 12, a tank 6, and an external heat exchanger 5 are provided, and an independent circuit including a pump P3 is provided with a heat absorption side refrigerant heat medium heat exchanger 13 and a temperature control object heat exchanger 60 for a battery. .
- This operation mode 10 is an operation mode in which defrosting heating is performed while the vehicle is stopped by using heat storage, heat stored in the battery is absorbed by the refrigerant heat medium heat exchanger 13, the refrigerant circuit 1U is operated, and refrigerant heat is generated.
- the external heat exchanger 5 is defrosted by flowing the heat medium heated by the heat released from the medium heat exchanger 12 and the heat stored in the tank 6 to the external heat exchanger 5 .
- Operation mode 11 is an operation mode in which defrosting heating is performed while the vehicle is running by using heat storage, and is the same as operation mode 10 except for the switching state of the switching valve V5.
- the heat generated by the temperature control object (inverter, motor, power control unit, etc.) generated during operation, the heat radiation of the refrigerant heat medium heat exchanger 12, and the heat storage of the tank 6 are transferred to the external heat exchanger 5. Used for defrosting.
- the switching valves V1, V2, V5 are set to the non-default state, and the other switching valves V3, V4, V6 are set to the default state, so that an independent circuit including the pump P1 and a pump P2 to stop pump P3.
- operation mode 12 the heat of the auxiliary heat source 7 is absorbed to operate the refrigerant circuit 1U, so that the indoor air conditioner 50 is heated while the battery is heated.
- This operation mode 12 is the same as operation mode 9 except for the switching of the switching valve V5.
- the heat added by the auxiliary heat source 7 is absorbed by the refrigerant in the refrigerant heat medium heat exchanger 12, and in the temperature control object heat exchanger 60, the heat added by the auxiliary heat source 7
- the heat and the heat accumulated in the tank 6 heat the battery.
- the temperature of the heat medium used for heating the battery can be appropriately adjusted by the amount of heat generated by the auxiliary heat source 7. It is possible to adjust the temperature range to a different temperature range, and it is possible to heat the battery while performing the heating operation at the appropriate temperature.
- the switching valves V1, V2, and V4 are set to the non-default state, and the other switching valves V3, V5, and V6 are set to the default state, so that an independent circuit including the pump P1 and a pump P2 and an independent circuit including pump P3.
- the refrigerant circuit 1U in the operation mode 13 is the same as in the operation mode 8, and both the on-off valves 31V and 32V are opened to bypass the refrigerant heat medium heat exchanger 12.
- a second refrigerant circuit bypassing the exchanger 13 is configured.
- the heat medium circuit 100 in the operation mode 13 has a heat dissipation side refrigerant heat medium heat exchanger 11 and a heater core 51 in an independent circuit including the pump P1, and an independent circuit including the pump P2 with a heat absorption side refrigerant heat medium heat.
- An exchanger 12, an auxiliary heat source 7, a tank 6, and heat exchangers 60, 61, 62, 63 for temperature control objects are provided. 52 are provided.
- the heating operation of the indoor air conditioner 50 is performed by the operation of the refrigerant circuit 1U that absorbs the heat in the vehicle interior and the waste heat/accumulated heat of the object to be temperature controlled.
- the refrigerant heat medium heat exchanger 13 functioning as the evaporator of the first system
- the heat in the passenger compartment recovered via the cooler core 52 is absorbed by the refrigerant
- the refrigerant evaporates in the refrigerant circuit of the second system.
- the refrigerant heat medium heat exchanger 12 functioning as a vessel, the heat added by the auxiliary heat source 7, the heat accumulated in the tank 6, and the waste heat accumulated in a temperature control object such as a battery are absorbed by the refrigerant.
- the pumps P1, P2, and P3 and the plurality of temperature control target heat exchangers are formed, so even if there is a system abnormality, the heat medium circuit 100
- the temperature-controlled heat medium can be circulated throughout the series flow path 100T, and desired temperature control can be performed for many temperature control targets connected to the series flow path 100T.
- the series flow path 100T is formed in the default state when the flow path switching device 100A is de-energized, the above-described series flow path 100T is automatically formed when the flow path switching device 100A is de-energized due to system failure. It is possible to make the configuration to be the same, and realize fail-safe.
- the heat medium circuit 100 forms a plurality of independent circuits by means of the channel switching device 100A.
- external heat exchanger 5 heat exchangers 60, 61, 62, 63 for temperature control objects, etc.). It is possible to control the temperature of the object to be temperature controlled.
- the heat medium temperature control system 1 also includes, as a heat source, a refrigerant circuit 1U having a plurality of refrigerant heat medium heat exchangers (11, 12, 13).
- a refrigerant heat medium heat exchanger (11, 12, 13) is provided. According to this, the temperature zone of the heat medium flowing through the independent circuit can be appropriately set by the heat absorption/radiation function of each of the refrigerant heat medium heat exchangers (11, 12, 13).
- the refrigerant circuit 1U selects two or more of at least three refrigerant heat medium heat exchangers, and uses a part of the selected refrigerant heat medium heat exchangers as a condenser and the other part as an evaporator.
- various operation modes of the refrigerant circuit 1U described above can be realized.
- the heating operation can be performed even when the system is abnormal. Cooling operation can be switched.
- the serial flow path 100T includes an external heat exchanger 5 that exchanges heat between the heat medium and the outside air, an evaporator that is one of the refrigerant heat medium heat exchangers, and heat to be temperature controlled.
- the heat medium is made to flow in order of the cooler core 52, which is one of the exchangers, and the heat exchangers (60, 61, 62, 63) for temperature control object, which are other heat exchangers for temperature control.
- the required temperature of the cooler core 52 during cooling is lower than the required temperature of the heat exchangers (60, 61, 62, 63) for temperature control objects, so the external heat exchanger 5, the evaporator, and the cooler core 52 , the heat exchangers for temperature control object (60, 61, 62, 63) in order, even if the series flow path 100T is formed during the cooling operation, the external heat exchanger 5 After the heat of the heat medium is radiated in the evaporator, the heat medium can be cooled. Therefore, it is possible to cool the object to be temperature controlled while suppressing the influence of the cooling operation on comfort, thereby avoiding a situation such as stopping the vehicle.
- the series flow path 100T includes a condenser that is one of the refrigerant heat medium heat exchangers, a heater core 51 that is one of the heat exchangers subject to temperature control, and the external heat exchanger 5.
- the heat medium is made to flow in the order of . According to this, by flowing the heat medium in the order of the condenser, the heater core 51, and the external heat exchanger 5, heat is radiated by the heater core 51 during heating, and the heat exchange in the heater core 51 is suppressed by the air mix door 53 etc. during cooling.
- the heat can be dissipated by the external heat exchanger 5 while the heat is being supplied.
- the downstream side of the outside air heat exchanger 5 is the external heat exchanger 5, the evaporator, the cooler core 52, and the temperature control object heat exchangers (60, 61, 62, 63) in that order. Because the heat medium flows in the condenser, the heat medium that exchanges heat in the condenser during cooling flows to the evaporator after radiating heat in the external heat exchanger 5, so it does not flow directly to the evaporator. can be suppressed.
- the heater prevents the heat medium in the high temperature zone used in the core 52 from flowing to the heat exchangers (60, 61, 62, 63) for the temperature control object, and prevents the temperature of the temperature control object from becoming too high. be able to.
- the heat medium emitted from the heater core 52 can flow through the external heat exchanger 5 and the evaporator in that order. It can be used as a heat source.
- the serial flow path 100T is provided with the auxiliary heat source 7 for heating the heat medium on the inlet side of the heater core 52 as needed. It can be used as a temperature control heat source in heating operation, a heat source for heating when the refrigerant circuit 1U is not operating, or a heat source for heating the battery. It can be used to add heat when defrosting or when used as a heat source for an evaporator.
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Abstract
Description
熱源との熱交換で温度管理された熱媒体を循環させる熱媒体回路を備え、前記熱媒体回路が熱媒体を圧送するポンプを備えると共に温調対象との間で熱交換する複数の温調対象熱交換器を備える熱媒体温調システムであって、前記熱媒体回路は、システム異常時に、前記ポンプと前記複数の温調対象熱交換器を繋ぐ直列流路を形成することを特徴とする熱媒体温調システム。
1U:冷媒回路,1A:冷媒回路制御装置,31,32:バイパス冷媒流路,
5:外部熱交換器,6:タンク,7:補助熱源,10:圧縮機,
11,12,13:冷媒熱媒体熱交換器,14A,14B:減圧部,
15:逆流防止手段,20,21,22,23:冷媒流路,
31A,32A:分岐部,31B,32B:合流部,
31V,32V:開閉弁,50:室内空調装置,
51:ヒーターコア,52:クーラーコア,
60,61,62,63:温調対象物用熱交換器,
100:熱媒体回路,100A:流路切替装置,100T:直列流路,
101,102,103,110,111,112,120,121,122,123,130,131,132,133,140,141,142,150,151,160,161:流路,
150A,160A,161A:合流部,
200:制御装置,
V1,V2,V3,V4,V5,V6:切替弁,
U:ユニット,P1,P2,P3:ポンプ
Claims (8)
- 熱源との熱交換で温度管理された熱媒体を循環させる熱媒体回路を備え、前記熱媒体回路が熱媒体を圧送するポンプを備えると共に温調対象との間で熱交換する複数の温調対象熱交換器を備える熱媒体温調システムであって、
前記熱媒体回路は、システム異常時に、前記ポンプと前記複数の温調対象熱交換器を繋ぐ直列流路を形成することを特徴とする熱媒体温調システム。 - 前記直列流路は、前記熱媒体回路が備える流路切替装置の非通電状態で形成されることを特徴とする請求項1記載の熱媒体温調システム。
- 前記熱媒体回路は、前記流路切替装置によって複数の独立回路を形成し、
前記独立回路毎に、前記ポンプと前記温調対象熱交換器が設けられていることを特徴とする請求項1又は2記載の熱媒体温調システム。 - 複数の冷媒熱媒体熱交換器を有する冷媒回路を備え、
前記独立回路の各々には、少なくとも1つの前記冷媒熱媒体熱交換器が設けられることを特徴とする請求項3記載の熱媒体温調システム。 - 前記直列流路は、
熱媒体と外気とが熱交換する外部熱交換器、前記冷媒熱媒体熱交換器の1つである蒸発器、前記温調対象熱交換器の1つである室内空調装置のクーラーコア、他の前記温調対象熱交換器である温調対象物用熱交換器の順に熱媒体を流すことを特徴とする請求項4記載の熱媒体温調システム。 - 前記直列流路は、
前記冷媒熱媒体熱交換器の1つである凝縮器、前記温調対象熱交換器の1つである室内空調装置のヒーターコア、前記外部熱交換器の順に熱媒体を流すことを特徴とする請求項5記載の熱媒体温調システム。 - 前記直列流路は、
前記ヒーターコアの入口側に熱媒体を加熱する補助熱源を設けることを特徴とする請求項6記載の熱媒体温調システム。 - 前記冷媒回路は、少なくとも3つ以上の前記冷媒熱媒体熱交換器のうち2つ以上を選択して、選択した前記冷媒熱媒体熱交換器の一部を凝縮器とし他部の蒸発器とすることを特徴とする請求項4~7のいずれか1項記載の熱媒体温調システム。
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