JP2019166972A - Air conditioner for vehicle - Google Patents

Air conditioner for vehicle Download PDF

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Publication number
JP2019166972A
JP2019166972A JP2018056234A JP2018056234A JP2019166972A JP 2019166972 A JP2019166972 A JP 2019166972A JP 2018056234 A JP2018056234 A JP 2018056234A JP 2018056234 A JP2018056234 A JP 2018056234A JP 2019166972 A JP2019166972 A JP 2019166972A
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Prior art keywords
heat
heat exchanger
refrigerant
vehicle
circuit
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Inventor
徹也 石関
Tetsuya Ishizeki
徹也 石関
伸彦 藤井
Nobuhiko Fujii
伸彦 藤井
竜 宮腰
Tatsu Miyakoshi
竜 宮腰
岡本　佳之
Yoshiyuki Okamoto
佳之 岡本
井上　大輔
Daisuke Inoue
大輔 井上
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Sanden Automotive Climate Systems Corp
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Sanden Automotive Climate Systems Corp
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Priority to JP2018056234A priority Critical patent/JP2019166972A/en
Priority to PCT/JP2019/009850 priority patent/WO2019181627A1/en
Publication of JP2019166972A publication Critical patent/JP2019166972A/en
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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
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/56—Heating or ventilating devices

Abstract

To provide an air conditioner for vehicle capable of performing individual air conditioning in each of a plurality of seats and saving a space for installation of the air conditioner for vehicle.SOLUTION: Refrigerant circuits 12 of a plurality of air conditioning units 10 are connected to a heat medium circuit 20. Therefore, the plurality of air conditioning units 10 are installed in only a vehicle interior, and only one heat medium circuit 20 can be installed over the vehicle interior and the vehicle exterior for forming the air conditioning device 1 for vehicle, so that, an installation space of the air conditioning device 1 for vehicle can be saved.SELECTED DRAWING: Figure 1

Description

本発明は、例えば、車両の車室内の冷房または暖房を行う車両用空気調和装置に関するものである。   The present invention relates to a vehicle air conditioner that cools or heats a vehicle interior of a vehicle, for example.

従来、この種の車両用空気調和装置としては、圧縮機、車室内を加熱または冷却する室内熱交換器、及び、室内熱交換器において放出した熱の吸収または吸収した熱の放出を行う室外熱交換器と、が接続された冷媒回路を備えたものが知られている（例えば、特許文献１参照）。   Conventionally, this type of vehicle air conditioner includes a compressor, an indoor heat exchanger that heats or cools the interior of the vehicle, and outdoor heat that absorbs or releases heat absorbed in the indoor heat exchanger. An apparatus having a refrigerant circuit connected to an exchanger is known (see, for example, Patent Document 1).

前記車両用空気調和装置では、室側熱交換器が設置された車室内と室外熱交換器が設置された車室とにわたって冷媒回路が構成されている。   In the vehicle air conditioner, a refrigerant circuit is configured across a vehicle interior in which a room-side heat exchanger is installed and a vehicle interior in which an outdoor heat exchanger is installed.

特許第６１６７４１６号公報Japanese Patent No. 6167416

車両用空気調和装置では、車室内に設けられた複数のシートのそれぞれにおいて、着座した乗員に向かって吹出す空気の温度の調整可能とする個別空調を行うことによって、シートに着座している乗員の快適性を向上させることが考えられている。   In a vehicle air conditioner, an occupant seated in a seat is provided by performing individual air conditioning in each of a plurality of seats provided in the passenger compartment so that the temperature of air blown toward the seated occupant can be adjusted. It is considered to improve comfort.

しかし、複数のシートのそれぞれにおける個別空調を可能とするためには、複数のシートのそれぞれに対して冷媒回路を構成することになり、車室内と車室外とにわたって複数の冷媒回路を構成することになるため、車両用空気調和装置を設置するために広い設置スペースが必要となる。   However, in order to enable individual air conditioning in each of the plurality of seats, a refrigerant circuit is configured for each of the plurality of seats, and a plurality of refrigerant circuits are configured across the vehicle interior and the exterior of the vehicle interior. Therefore, a large installation space is required to install the vehicle air conditioner.

本発明の目的とするところは、複数のシートのそれぞれにおける個別空調を可能とするとともに、設置スペースの省スペース化を図ることのできる車両用空気調和装置を提供することにある。   An object of the present invention is to provide an air conditioner for a vehicle that enables individual air conditioning in each of a plurality of seats and can save installation space.

本発明の車両用空気調和装置は、前記目的を達成するために、車両における対象物を加熱または冷却する利用側熱交換器と、利用側熱交換器において放出した熱の吸収または吸収した熱の排出を行う吸排熱側熱交換器と、が接続された冷媒回路と、吸排熱側熱交換器において冷媒と熱交換する熱媒体が流通し、熱媒体と車室外の空気とを熱交換させる室外熱交換器が接続された熱媒体回路と、を備え、熱媒体回路には、複数の冷媒回路が接続されている。   In order to achieve the above object, a vehicle air conditioner according to the present invention includes a use-side heat exchanger that heats or cools an object in a vehicle, and absorbs heat absorbed or absorbed by the use-side heat exchanger. A refrigerant circuit connected to the intake / exhaust heat side heat exchanger that performs discharge, and a heat medium that exchanges heat with refrigerant in the intake / exhaust heat side heat exchanger circulates and exchanges heat between the heat medium and air outside the passenger compartment. A heat medium circuit to which the heat exchanger is connected, and a plurality of refrigerant circuits are connected to the heat medium circuit.

これにより、複数の冷媒回路のそれぞれの吸熱または排熱が１つの熱媒体回路によって実行されることから、複数の冷媒回路が車室内のみに設置され、１つの熱媒体回路のみが車室内と車室外とにわたって設置される。   Thereby, each heat absorption or exhaust heat of the plurality of refrigerant circuits is executed by one heat medium circuit, so that the plurality of refrigerant circuits are installed only in the vehicle interior, and only one heat medium circuit is provided in the vehicle interior and the vehicle. It is installed over and outside.

本発明によれば、複数の冷媒回路を車室内のみに設置するとともに、１つの熱媒体回路のみを車室内と車室外とにわたって設置することで車両用空気調和装置を構成することができるので、複数のシートのそれぞれにおける個別空調を可能とするとともに、車両用空気調和装置の設置スペースの省スペース化を図ることが可能となる。   According to the present invention, the vehicle air conditioner can be configured by installing a plurality of refrigerant circuits only in the vehicle interior and installing only one heat medium circuit over the vehicle interior and outside the vehicle interior. In addition to enabling individual air conditioning in each of the plurality of seats, it is possible to save the installation space of the vehicle air conditioner.

本発明の一実施形態を示す暖房運転中の車両用空気調和装置の概略構成図である。It is a schematic block diagram of the air conditioning apparatus for vehicles in heating operation which shows one Embodiment of this invention. 冷房運転中の車両用空気調和装置の概略構成図である。It is a schematic block diagram of the air conditioning apparatus for vehicles in air_conditionaing | cooling operation. 熱媒体回路のその他の例を示す車両用空気調和装置の概略構成図である。It is a schematic block diagram of the vehicle air conditioner which shows the other example of a heat carrier circuit. 熱媒体回路のその他の例を示す車両用空気調和装置の概略構成図である。It is a schematic block diagram of the vehicle air conditioner which shows the other example of a heat carrier circuit.

図１乃至図２は、本発明の一実施形態を示すものである。   1 and 2 show an embodiment of the present invention.

本発明の車両用空気調和装置１は、乗員が着座するためのシートが車室内に複数配置された車両において、シート毎に着座した乗員に向かって冷却又は加熱した空気を吹き出させるとともに、それぞれのシートの表面温度の調整を行うものである。   In the vehicle air conditioner 1 of the present invention, in a vehicle in which a plurality of seats for a passenger to be seated are arranged in the vehicle interior, air that is cooled or heated is blown toward the passenger seated for each seat, The surface temperature of the sheet is adjusted.

車両用空気調和装置１は、図１に示すように、車室内における複数のシートのそれぞれの下部に設けられた複数の空調ユニット１０と、車室内と車室外とにわたって設置され、複数の空調ユニット１０が接続された熱媒体回路２０と、を備えている。   As shown in FIG. 1, the vehicle air conditioner 1 is installed across a plurality of air conditioning units 10 provided in the lower part of each of a plurality of seats in a vehicle interior, and a plurality of air conditioning units. 10 is connected to the heat medium circuit 20.

空調ユニット１０は、直方体形状を有するケース１１と、ケース１１内に設けられた冷媒回路１２と、を有している。   The air conditioning unit 10 includes a case 11 having a rectangular parallelepiped shape and a refrigerant circuit 12 provided in the case 11.

ケース１１には、内部に車室内に吹き出す空気を流通させるための通風路１１ａが形成されている。通風路１１ａには、車室内及び車室外の少なくとも一方の空気を通風路１１ａに流入させるための空気流入口１１ｂと、通風路１１ａを流通した空気を車室内に吹き出させるための空気流出口１１ｃと、が形成されている。また、通風路１１ａ内には、空気流入口１１ｂから空気流出口１１ｃに向かって空気を流通させるための送風機１３と、通風路１１ａを流通する空気を加熱または冷却するための後述する第１利用側熱交換器と、が配置されている。   The case 11 is formed with a ventilation path 11a for circulating air blown into the vehicle interior. The air passage 11a has an air inlet 11b for allowing at least one of the air inside and outside the vehicle to flow into the air passage 11a, and an air outlet 11c for blowing the air flowing through the air passage 11a into the vehicle interior. And are formed. Moreover, in the ventilation path 11a, the air blower 13 for distribute | circulating air from the air inflow port 11b toward the air outflow port 11c, and the 1st utilization mentioned later for heating or cooling the air which distribute | circulates the ventilation path 11a A side heat exchanger.

冷媒回路１２は、吸入した冷媒を圧縮して吐出するための圧縮機１２ａと、通風路１１ａを流通する空気と冷媒とを熱交換するための第１利用側熱交換器１２ｂと、シートの内部に設置されたシート用熱媒体回路１４を流通する熱媒体と冷媒とを熱交換するための第２利用側熱交換器１２ｃと、熱媒体回路２０を流通する熱媒体と冷媒とを熱交換するための吸排熱側熱交換器１２ｄと、冷媒回路１２を流通する冷媒を減圧するための第１膨張弁１２ｅ及び第２膨張弁１２ｆと、暖房運転用の冷媒流路と冷房運転用の冷媒流路とを切り替えるための流路切替手段としての四方弁１２ｇと、を有している。   The refrigerant circuit 12 includes a compressor 12a for compressing and discharging the sucked refrigerant, a first use side heat exchanger 12b for exchanging heat between the air flowing through the ventilation path 11a and the refrigerant, and the interior of the seat Heat exchange is performed between the second use-side heat exchanger 12c for exchanging heat between the heat medium flowing through the sheet heat medium circuit 14 installed in the sheet and the refrigerant, and the heat medium flowing through the heat medium circuit 20. A heat exchanger 12d for intake and exhaust heat, a first expansion valve 12e and a second expansion valve 12f for decompressing the refrigerant flowing through the refrigerant circuit 12, a refrigerant flow path for heating operation, and a refrigerant flow for cooling operation And a four-way valve 12g as a flow path switching means for switching between the paths.

具体的に説明すると、圧縮機１２ａの冷媒吐出側及び冷媒吸入側には、四方弁１２ｇを介して第１利用側熱交換器１２ｂの一端側が接続されている。第１利用側熱交換器１２ｂの他端側には、第１膨張弁１２ｅを介して第２利用側熱交換器１２ｃの冷媒流路一端側が接続されている。第２利用側熱交換器１２ｃの冷媒流路他端側には、第２膨張弁１２ｆを介して吸排熱側熱交換器１２ｄの冷媒流路一端側が接続されている。吸排熱側熱交換器１２ｄの冷媒流路他端側には、四方弁１２ｇを介して圧縮機１２ａの冷媒吐出側及び冷媒吸入側が接続されている。   More specifically, one end side of the first use side heat exchanger 12b is connected to the refrigerant discharge side and the refrigerant suction side of the compressor 12a via a four-way valve 12g. One end side of the refrigerant flow path of the second usage side heat exchanger 12c is connected to the other end side of the first usage side heat exchanger 12b via the first expansion valve 12e. One end side of the refrigerant flow path of the intake / exhaust heat side heat exchanger 12d is connected to the other end side of the refrigerant flow path of the second usage side heat exchanger 12c via the second expansion valve 12f. The refrigerant discharge side and the refrigerant suction side of the compressor 12a are connected to the other end side of the refrigerant flow path of the intake / exhaust heat side heat exchanger 12d via a four-way valve 12g.

第１膨張弁１２ｅ及び第２膨張弁１２ｆは、それぞれ弁開度の調整が可能となっている。また、四方弁１２ｇは、第１乃至第４接続口ａ，ｂ，ｃ，ｄを有し、第１接続口ａと第２接続口ｂとを連通すると共に第３接続口ｃと第４接続口ｄとを連通する状態と、第１接続口ａと第３接続口ｃとを連通すると共に第２接続口ｂと第４接続口ｄとを連通する状態と、を切り替え可能である。   Each of the first expansion valve 12e and the second expansion valve 12f can be adjusted in valve opening. The four-way valve 12g has first to fourth connection ports a, b, c, and d, communicates the first connection port a and the second connection port b, and connects the third connection port c and the fourth connection port. It is possible to switch between a state in which the port d is communicated and a state in which the first connection port a and the third connection port c are communicated and the second connection port b and the fourth connection port d are communicated.

第２利用側熱交換器１２ｃの熱媒体流路には、シートの内部に組み込まれたシート用熱媒体回路１４が接続されている。シート用熱媒体回路１４には、エチレングリコール等の不凍液や水が熱媒体として封入されている。   A sheet heat medium circuit 14 incorporated in the sheet is connected to the heat medium flow path of the second usage side heat exchanger 12c. The sheet heat medium circuit 14 is filled with an antifreeze such as ethylene glycol or water as a heat medium.

熱媒体回路２０には、エチレングリコール等の不凍液や水が熱媒体として流通する流路が形成されており、複数の空調ユニット１０の冷媒回路１２の吸排熱側熱交換器１２ｄの熱媒体流路が互いに並列に接続されている。熱媒体回路２０には、内部に封入された熱媒体を循環させるための循環ポンプ２１と、車室外の空気と熱媒体とを熱交換するための室外熱交換器２２と、が接続されている。室外熱交換器２２は、車両のエンジンルーム等の車室外の空間に配置されている。また、室外熱交換器２２の近傍には、車室外の空気を室外熱交換器２２に向かって流通させるための室外送風機２２ａが設けられている。   The heat medium circuit 20 is formed with a flow path through which an antifreeze such as ethylene glycol or water flows as a heat medium, and the heat medium flow path of the intake / exhaust heat side heat exchanger 12d of the refrigerant circuit 12 of the plurality of air conditioning units 10. Are connected in parallel with each other. Connected to the heat medium circuit 20 are a circulation pump 21 for circulating the heat medium sealed inside, and an outdoor heat exchanger 22 for exchanging heat between the air outside the vehicle compartment and the heat medium. . The outdoor heat exchanger 22 is disposed in a space outside the vehicle compartment such as an engine room of the vehicle. Further, an outdoor blower 22 a for circulating air outside the vehicle compartment toward the outdoor heat exchanger 22 is provided in the vicinity of the outdoor heat exchanger 22.

以上のように構成された車両用空気調和装置１において、複数の空調ユニット１０では、それぞれ、圧縮機１２ａ及び送風機１３を駆動するとともに、第１膨張弁１２ｅ及び第２膨張弁１２ｆの弁開度と四方弁１２ｇの流路を設定することで、暖房運転と冷房運転とが切り替えられる。また、熱媒体回路２０では、循環ポンプ２１及び室外送風機２２ａを駆動することで、空調ユニット１０の吸排熱側熱交換器１２ｄに対して冷媒と熱交換する熱媒体が供給される。   In the vehicle air conditioner 1 configured as described above, in the plurality of air conditioning units 10, the compressor 12 a and the blower 13 are driven, and the opening degrees of the first expansion valve 12 e and the second expansion valve 12 f are respectively used. By setting the flow path of the four-way valve 12g, the heating operation and the cooling operation can be switched. Further, in the heat medium circuit 20, the heat pump that exchanges heat with the refrigerant is supplied to the intake / exhaust heat side heat exchanger 12 d of the air conditioning unit 10 by driving the circulation pump 21 and the outdoor fan 22 a.

空調ユニット１０において暖房運転を行う場合には、図１に示すように、第１膨張弁１２ｅの弁開度を全開に設定すると共に第２膨張弁１２ｆを所定の弁開度に設定し、四方弁１２ｇの第１接続口ａと第２接続口ｂとを連通すると共に第３接続口ｃと第４接続口ｄとを連通する状態とする。   When performing heating operation in the air conditioning unit 10, as shown in FIG. 1, the opening degree of the first expansion valve 12e is set to be fully open and the second expansion valve 12f is set to a predetermined valve opening degree. The first connection port a and the second connection port b of the valve 12g are communicated, and the third connection port c and the fourth connection port d are communicated.

これにより、圧縮機１２ａから吐出された冷媒は、第１利用側熱交換器１２ｂ及び第２利用側熱交換器１２ｃにおいて熱を放出し、吸排熱側熱交換器１２ｄにおいて熱を吸収する。   Thereby, the refrigerant discharged from the compressor 12a releases heat in the first usage side heat exchanger 12b and the second usage side heat exchanger 12c, and absorbs heat in the suction / exhaust heat side heat exchanger 12d.

また、圧縮機１２ａから吐出された高温の冷媒は、まず、第１利用側熱交換器１２ｂにおいて放熱して温度が低下する。次に、第１利用側熱交換器１２ｂにおいて放熱して温度が低下した冷媒が、第２利用側熱交換器１２ｃにおいてさらに放熱する。   Further, the high-temperature refrigerant discharged from the compressor 12a first dissipates heat in the first usage-side heat exchanger 12b and the temperature decreases. Next, the refrigerant whose temperature has decreased due to heat dissipation in the first usage-side heat exchanger 12b further dissipates heat in the second usage-side heat exchanger 12c.

即ち、暖房運転時において車室内に吹き出される空気は、車室内の目標設定温度と比較して高温が求められるため、圧縮機１２ａから吐出された高温の冷媒と熱交換した空気が車室内に吹き出される。また、暖房運転時におけるシートは、乗員が接することになり、車室内の目標設定温度に対して著しく高温となる状態を避ける必要があるため、第１利用側熱交換器１２ｂにおいて放熱した後の冷媒と熱交換した熱媒体によってシートが加熱される。   That is, since the air blown into the vehicle interior during the heating operation is required to have a higher temperature than the target set temperature in the vehicle interior, the air exchanged heat with the high-temperature refrigerant discharged from the compressor 12a enters the vehicle interior. Blown out. In addition, the seat at the time of heating operation is in contact with the occupant, and it is necessary to avoid a state in which the temperature is significantly higher than the target set temperature in the passenger compartment. Therefore, after the heat is dissipated in the first usage-side heat exchanger 12b The sheet is heated by the heat medium exchanged with the refrigerant.

また、空調ユニット１０において冷房運転を行う場合には、図２に示すように、第１膨張弁１２ｅの弁開度を所定の弁開度に設定すると共に第２膨張弁１２ｆの弁開度を第１膨張弁１２ｅの弁開度よりも大きい所定の弁開度に設定し、四方弁１２ｇの第１接続口ａと第３接続口ｃとを連通すると共に第２接続口ｂと第４接続口ｄとを連通する状態とする。   Further, when the cooling operation is performed in the air conditioning unit 10, as shown in FIG. 2, the opening degree of the first expansion valve 12e is set to a predetermined opening degree and the opening degree of the second expansion valve 12f is set to a predetermined opening degree. A predetermined valve opening larger than the valve opening of the first expansion valve 12e is set, the first connection port a and the third connection port c of the four-way valve 12g are communicated, and the second connection port b and the fourth connection are connected. The mouth d is in communication.

これにより、圧縮機１２ａから吐出された冷媒は、吸排熱側熱交換器１２ｄにおいて熱を排出し、第１利用側熱交換器１２ｂ及び第２利用側熱交換器１２ｃにおいて熱を吸収する。   Thereby, the refrigerant discharged from the compressor 12a discharges heat in the intake / exhaust heat side heat exchanger 12d, and absorbs heat in the first usage side heat exchanger 12b and the second usage side heat exchanger 12c.

また、吸排熱側熱交換器１２ｄから吐出した冷媒は、まず、第２膨張弁１２ｆを第１膨張弁１２ｅの弁開度よりも大きい所定の弁開度に設定することで、第２利用側熱交換器１２ｃにおける吸熱量が所定の吸熱量に制限される。次に、第２利用側熱交換器１２ｃから流出した冷媒は、第１膨張弁１２ｅを所定の弁開度に設定することで、第１利用側熱交換器１２ｂにおいて第２利用側熱交換器１２ｃよりも大きな吸熱量とする。   In addition, the refrigerant discharged from the intake / exhaust heat side heat exchanger 12d is first set on the second usage side by setting the second expansion valve 12f to a predetermined valve opening larger than the valve opening of the first expansion valve 12e. The endothermic amount in the heat exchanger 12c is limited to a predetermined endothermic amount. Next, the refrigerant that has flowed out of the second usage-side heat exchanger 12c sets the first expansion valve 12e to a predetermined valve opening, so that the second usage-side heat exchanger in the first usage-side heat exchanger 12b. The endothermic amount is greater than 12c.

即ち、冷房運転時において車室内に吹き出される空気は、車室内の目標設定温度と比較して低温が求められるため、第２利用側熱交換器１２ｃよりも大きな吸熱量となる第１利用側熱交換器１２ｂにおいて冷媒と熱交換し、車室内に吹き出される。また、冷房運転時におけるシートは、乗員が接することになり、車室内の目標設定温度に対して著しく低温となる状態を避ける必要があるため、吸熱量が制限された第２利用側熱交換器１２ｃにおいて冷媒と熱交換した熱媒体によってシートが冷却される。   That is, since the air blown into the vehicle interior during the cooling operation is required to have a lower temperature than the target set temperature in the vehicle interior, the first usage side has a larger heat absorption amount than the second usage side heat exchanger 12c. Heat is exchanged with the refrigerant in the heat exchanger 12b and blown out into the passenger compartment. In addition, since the seat in the cooling operation is in contact with the occupant and it is necessary to avoid a state in which the temperature is significantly lower than the target set temperature in the passenger compartment, the second use side heat exchanger with a limited heat absorption amount In 12c, the sheet is cooled by the heat medium exchanged with the refrigerant.

このように、本実施形態の車両用空気調和装置によれば、熱媒体回路２０には、複数の空調ユニット１０の冷媒回路１２が接続されている。   Thus, according to the vehicle air conditioner of the present embodiment, the refrigerant circuits 12 of the plurality of air conditioning units 10 are connected to the heat medium circuit 20.

これにより、複数の空調ユニット１０を車室内のみに設置するとともに、１つの熱媒体回路２０のみを車室内と車室外とにわたって設置することで車両用空気調和装置１を構成することができるので、車両用空気調和装置１の設置スペースの省スペース化を図ることが可能となる。   Thus, since the plurality of air conditioning units 10 are installed only in the vehicle interior, the vehicle air conditioner 1 can be configured by installing only one heat medium circuit 20 over the vehicle interior and outside the vehicle interior. It is possible to save the installation space of the vehicle air conditioner 1.

また、冷媒回路１２には、複数の利用側熱交換器１２ｂ，１２ｃが互いに直列に接続されている。   The refrigerant circuit 12 has a plurality of use side heat exchangers 12b and 12c connected in series.

これにより、利用側熱交換器１２ｂ，１２ｃのそれぞれにおいて対象物を互いに異なる温度となるように冷却または加熱することができるので、車室内における乗員の快適性を向上させることが可能となる。   As a result, the object can be cooled or heated in the use side heat exchangers 12b and 12c so as to have different temperatures from each other, so that it is possible to improve passenger comfort in the passenger compartment.

また、冷媒回路１２は、利用側熱交換器１２ｂ，１２ｃを、放熱器として機能させる暖房運転用の冷媒流路または吸熱器として機能させる冷房運転用の冷媒流路に切り替える四方弁１２ｇを有している。   The refrigerant circuit 12 has a four-way valve 12g that switches the use side heat exchangers 12b and 12c to a refrigerant channel for heating operation that functions as a radiator or a refrigerant channel for cooling operation that functions as a heat absorber. ing.

これにより、冷媒回路１２において、暖房運転及び冷房運転のそれぞれにおいて第１利用側熱交換器１２ｂ及び第２利用側熱交換器１２ｃによって対象物を加熱または冷却することが可能となるので、冷媒の流路を構成する管の使用量を低減することができ、製造コストの低減を図ることが可能となる。   Thereby, in the refrigerant circuit 12, the object can be heated or cooled by the first usage-side heat exchanger 12b and the second usage-side heat exchanger 12c in each of the heating operation and the cooling operation. It is possible to reduce the usage amount of the pipes constituting the flow path, and to reduce the manufacturing cost.

また、複数の利用側熱交換器１２ｂ，１２ｃのうち、冷媒流通方向の上流側に位置する利用側熱交換器（暖房運転における第１利用側熱交換器１２ｂ、冷房運転における第２利用側熱交換器１２ｃ）は、下流側に位置する利用側熱交換器において加熱または冷却される対象物の温度よりも高い温度に対象物を加熱または冷却する。   Of the plurality of usage-side heat exchangers 12b and 12c, the usage-side heat exchanger (the first usage-side heat exchanger 12b in the heating operation, the second usage-side heat in the cooling operation) located upstream in the refrigerant flow direction. The exchanger 12c) heats or cools the object to a temperature higher than the temperature of the object to be heated or cooled in the use side heat exchanger located on the downstream side.

これにより、暖房運転において高温が要求される空気を加熱する第１利用側熱交換器１２ｂと、冷房運転において過度な低温を避ける必要がある熱媒体を冷却する第２利用側熱交換器１２ｃと、を同一の冷媒回路１２によって構成することが可能となる。   Thereby, the 1st utilization side heat exchanger 12b which heats the air by which high temperature is requested | required in heating operation, The 2nd utilization side heat exchanger 12c which cools the heat medium which needs to avoid excessive low temperature in air_conditionaing | cooling operation, Can be constituted by the same refrigerant circuit 12.

尚、前記実施形態では、熱媒体回路２０を流通する熱媒体を、室外熱交換器２２において車室外の空気と熱交換させることによって、吸熱または放熱させるようにしたものを示したが、これに限られるものではない。流通する熱媒体の吸熱量が不足する状態を解消可能な熱媒体回路としては、例えば、図３に示すように、熱媒体回路２０を流通する熱媒体を電力によって加熱するため加熱ヒータ２３を、三方弁２４を介して、室外熱交換器２２と並列に接続してもよい。この場合には、熱媒体回路２０を流通する熱媒体を加熱ヒータ２３によって加熱することで冷媒回路１２において不足する熱量を補うことが可能となる。   In the above-described embodiment, the heat medium flowing through the heat medium circuit 20 has been shown to absorb heat or dissipate heat by exchanging heat with the air outside the vehicle compartment in the outdoor heat exchanger 22. It is not limited. For example, as shown in FIG. 3, the heating medium 23 for heating the heating medium flowing through the heating medium circuit 20 with electric power may be used as a heating medium circuit capable of solving the state where the heat absorption amount of the circulating heating medium is insufficient. You may connect in parallel with the outdoor heat exchanger 22 via the three-way valve 24. In this case, the heat medium flowing through the heat medium circuit 20 is heated by the heater 23, so that the heat quantity deficient in the refrigerant circuit 12 can be compensated.

また、車両がエンジン及び電動モータの一方または両方の駆動力によって走行するハイブリッド車両や、電動モータの駆動力で走行する電動車両等、走行用の電力を供給するためのバッテリを備えている場合には、図４に示すように、バッテリ２５を冷却するための冷却回路を熱媒体回路２０に接続してもよい。この場合には、バッテリ２５を冷却するための冷却回路を別途設ける必要がなく、熱媒体回路２０を流通する熱媒体によってバッテリ２５を冷却することが可能となる。また、バッテリ２５から排出される熱は、熱媒体回路２０を流通する熱媒体に吸熱させることによって、冷媒回路１２において不足する熱量を補うことが可能となる。   In addition, when the vehicle includes a battery for supplying electric power for traveling, such as a hybrid vehicle that travels by the driving force of one or both of the engine and the electric motor, or an electric vehicle that travels by the driving force of the electric motor. As shown in FIG. 4, a cooling circuit for cooling the battery 25 may be connected to the heat medium circuit 20. In this case, it is not necessary to separately provide a cooling circuit for cooling the battery 25, and the battery 25 can be cooled by the heat medium flowing through the heat medium circuit 20. In addition, the heat discharged from the battery 25 can compensate for the heat quantity deficient in the refrigerant circuit 12 by causing the heat medium flowing through the heat medium circuit 20 to absorb heat.

また、前記実施形態では、二つの利用側熱交換器１２ｂ，１２ｃを接続した冷媒回路１２を示したが、１つの利用側熱交換器を接続した冷媒回路に対しても、本発明を適用可能である。   Moreover, in the said embodiment, although the refrigerant circuit 12 which connected two utilization side heat exchangers 12b and 12c was shown, this invention is applicable also to the refrigerant circuit which connected one utilization side heat exchanger. It is.

また、前記実施形態では、冷媒回路１２に対して、第１利用側熱交換器１２ｂ及び第２利用側熱交換器１２ｃを互いに直列に接続し、加熱または冷却される対象物を互いに異なる温度とするようにしたものを示したが、これに限られるものではない。例えば、冷媒回路１２に対して、３以上の利用側熱交換器を互いに直列に接続し、加熱または冷却する対象物を互いに異なる温度とするようにしてもよい。   Moreover, in the said embodiment, with respect to the refrigerant circuit 12, the 1st utilization side heat exchanger 12b and the 2nd utilization side heat exchanger 12c are mutually connected in series, and the target object heated or cooled is mutually different temperature. Although what was shown was shown, it is not restricted to this. For example, three or more use-side heat exchangers may be connected in series to the refrigerant circuit 12 so that the objects to be heated or cooled have different temperatures.

また、前記実施形態では、第１利用側熱交換器１２ｂによって車室内に吹き出す空気の温度を加熱または冷却し、第２利用側熱交換器１２ｃによってシート用熱媒体回路１４を流通する熱媒体を加熱または冷却するものを示したが、これに限られるものではない。例えば、第１利用側熱交換器１２ｂ及び第２利用側熱交換器１２ｃのそれぞれにおいて車室内に供給する空気を互いに異なる温度に加熱または冷却してもよい。また、第１利用側熱交換器１２ｂ及び第２利用側熱交換器１２ｃのそれぞれにおいて液体の熱媒体を互いに異なる温度に加熱または冷却してもよい。   Moreover, in the said embodiment, the temperature of the air which blows off into a vehicle interior is heated or cooled by the 1st utilization side heat exchanger 12b, and the heat medium which distribute | circulates the sheet | seat heat medium circuit 14 with the 2nd utilization side heat exchanger 12c is used. Although what was heated or cooled was shown, it is not restricted to this. For example, the air supplied to the passenger compartment in each of the first usage-side heat exchanger 12b and the second usage-side heat exchanger 12c may be heated or cooled to different temperatures. Further, the liquid heat medium may be heated or cooled to different temperatures in each of the first usage-side heat exchanger 12b and the second usage-side heat exchanger 12c.

また、前記実施形態では、四方弁１２ｇによって冷媒回路１２を、冷房運転用の冷媒流路または暖房運転用の冷媒流路に切り替えるようにしたものを示したが、これに限られるものではない。冷媒回路１２を、複数の開閉弁によって冷房運転用の冷媒流路または暖房運転用の冷媒流路に切り替えが可能となるように構成してもよい。   In the above embodiment, the refrigerant circuit 12 is switched to the cooling operation flow path or the heating operation flow path by the four-way valve 12g. However, the present invention is not limited to this. The refrigerant circuit 12 may be configured to be able to be switched to a refrigerant channel for cooling operation or a refrigerant channel for heating operation by a plurality of on-off valves.

また、前記実施形態では、本発明を、暖房運転または冷房運転に切り替え可能な冷媒回路１２に適用したものを示したが、これに限られるものではない。例えば、暖房運転専用の冷媒回路や冷房運転専用の冷媒回路に対して、本発明を適用することも可能である。   Moreover, in the said embodiment, although what applied this invention to the refrigerant circuit 12 which can be switched to heating operation or a cooling operation was shown, it is not restricted to this. For example, the present invention can be applied to a refrigerant circuit dedicated to heating operation and a refrigerant circuit dedicated to cooling operation.

１…車両用空気調和装置、１０…空調ユニット、１２…冷媒回路、１２ｂ…第１利用側熱交換器、１２ｃ…第２利用側熱交換器、１２ｄ…吸排熱側熱交換器、１２ｇ…四方弁、２０…熱媒体回路、２２…室外熱交換器、２３…加熱ヒータ、２５…バッテリ。   DESCRIPTION OF SYMBOLS 1 ... Vehicle air conditioner, 10 ... Air conditioning unit, 12 ... Refrigerant circuit, 12b ... 1st utilization side heat exchanger, 12c ... 2nd utilization side heat exchanger, 12d ... Intake / exhaust heat side heat exchanger, 12g ... All sides Valve, 20 ... Heat medium circuit, 22 ... Outdoor heat exchanger, 23 ... Heater, 25 ... Battery.

Claims (6)

車両における対象物を加熱または冷却する利用側熱交換器と、利用側熱交換器において放出した熱の吸収または吸収した熱の排出を行う吸排熱側熱交換器と、が接続された冷媒回路と、
吸排熱側熱交換器において冷媒と熱交換する熱媒体が流通し、熱媒体と車室外の空気とを熱交換させる室外熱交換器が接続された熱媒体回路と、を備え、
熱媒体回路には、複数の冷媒回路が接続されている
車両用空気調和装置。 A refrigerant circuit connected to a use-side heat exchanger that heats or cools an object in a vehicle, and an intake / exhaust heat-side heat exchanger that absorbs heat discharged from the use-side heat exchanger or discharges the absorbed heat; ,
A heat medium circuit through which a heat medium that exchanges heat with the refrigerant flows in the intake / exhaust heat side heat exchanger, and an outdoor heat exchanger that exchanges heat between the heat medium and air outside the vehicle compartment, and
A vehicle air conditioner in which a plurality of refrigerant circuits are connected to the heat medium circuit. 冷媒回路には、複数の利用側熱交換器が互いに直列に接続されている
請求項１に記載の車両用空気調和装置。 The vehicle air conditioner according to claim 1, wherein a plurality of usage-side heat exchangers are connected in series to the refrigerant circuit. 冷媒回路は、利用側熱交換器を、放熱器として機能させる暖房運転用の冷媒流路または吸熱器として機能させる冷房運転用の冷媒流路に切り替える流路切替手段を有している
請求項１または２に記載の車両用空気調和装置。 The refrigerant circuit includes a flow path switching unit that switches the use-side heat exchanger to a refrigerant path for heating operation that functions as a radiator or a refrigerant path for cooling operation that functions as a heat absorber. Or the air conditioning apparatus for vehicles of 2. 複数の利用側熱交換器のうち、冷媒流通方向の上流側に位置する利用側熱交換器は、下流側に位置する利用側熱交換器において加熱または冷却される対象物の温度よりも高い温度に対象物を加熱または冷却する
請求項２または３に記載の車両用空気調和装置。 Among the plurality of use side heat exchangers, the use side heat exchanger located on the upstream side in the refrigerant flow direction has a temperature higher than the temperature of the object to be heated or cooled in the use side heat exchanger located on the downstream side. The vehicle air conditioner according to claim 2, wherein the object is heated or cooled. 熱媒体回路には、熱媒体回路を流通する熱媒体を加熱する加熱ヒータが設けられている
請求項１乃至４のいずれかに記載の車両用空気調和装置。 The vehicle air conditioner according to any one of claims 1 to 4, wherein the heat medium circuit is provided with a heater that heats the heat medium flowing through the heat medium circuit. 熱媒体回路には、車両を電動モータで駆動させる際に電力を供給するバッテリを冷却するための冷却回路が接続されている
請求項１乃至５のいずれかに記載の車両用空気調和装置。 The vehicle air conditioner according to any one of claims 1 to 5, wherein a cooling circuit for cooling a battery that supplies electric power when the vehicle is driven by an electric motor is connected to the heat medium circuit.
JP2018056234A 2018-03-23 2018-03-23 Air conditioner for vehicle Pending JP2019166972A (en)

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PCT/JP2019/009850 WO2019181627A1 (en) 2018-03-23 2019-03-12 Air conditioning device for vehicle

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JPH0798450B2 (en) * 1985-10-21 1995-10-25 富士重工業株式会社 Vehicle cooling system
JPH0939555A (en) * 1995-08-02 1997-02-10 Matsushita Electric Ind Co Ltd Heat pump heating, cooling and dehumidifying device for electric automobile
JP3436872B2 (en) * 1997-11-07 2003-08-18 株式会社テージーケー Automotive air conditioners
JP2006131106A (en) * 2004-11-05 2006-05-25 Denso Corp Air-conditioner for vehicle
JP2006327428A (en) * 2005-05-26 2006-12-07 Denso Corp Vehicular air-conditioner
KR20110131885A (en) * 2010-06-01 2011-12-07 한라공조주식회사 Seat air conditioner for vehicle
JP6327038B2 (en) * 2014-07-23 2018-05-23 株式会社デンソー Air conditioner for vehicles
JP6380265B2 (en) * 2014-07-23 2018-08-29 株式会社デンソー Refrigeration cycle equipment
DE112015005666T5 (en) * 2014-12-19 2017-09-14 Gentherm Incorporated Thermal conditioning systems and methods for vehicle areas
JP6439476B2 (en) * 2015-02-09 2018-12-19 株式会社デンソー Seat air conditioner

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