To improve return property of refrigerating machine oil from an evaporation unit for cooling to a compressor.SOLUTION: A vehicular air conditioner comprises: a compressor 11 which sucks, compresses, and delivers a refrigerant; a radiator 12 which radiates the refrigerant delivered from the compressor; a pressure reduction unit for air conditioning 15 which reduces pressure of the refrigerant radiated by the radiator; an evaporation unit for air conditioning 16 which evaporates the refrigerant reduced in pressure by the pressure reduction unit for air conditioning, in order to cool air for air conditioning blown into a vehicle compartment; pressure reduction units for cooling 18a, 18b which are arranged in parallel with the pressure reduction unit for air conditioning in flow of the refrigerant and reduce the pressure of the refrigerant radiated by the radiator; and evaporation units for cooling 19a, 19b which cool cooling air to be blown to an object to be cooled 70, by evaporating the refrigerant reduced in pressure by the cooling pressure reduction unit. A refrigerating machine oil for lubricating the compressor is mixed in the refrigerant. Each of the evaporation units for cooling has one flow channel formation member 191 which forms a flow channel for the refrigerant and exchanges heat between the refrigerant and cooling air.SELECTED DRAWING: Figure 3

    【課題】冷却用蒸発部から圧縮機への冷凍機油の戻り性を向上する。【解決手段】冷媒を吸入して圧縮して吐出する圧縮機11と、圧縮機から吐出された冷媒を放熱させる放熱器12と、放熱器で放熱された冷媒を減圧させる空調用減圧部15と、車室内へ送風される空調用空気を冷却するために空調用減圧部で減圧された冷媒を蒸発させる空調用蒸発部16と、冷媒の流れにおいて空調用減圧部と並列に配置され、放熱器で放熱された冷媒を減圧させる冷却用減圧部18a、18bと、冷却用減圧部で減圧された冷媒を蒸発させることによって、冷却対象物70に送風される冷却用空気を冷却する冷却用蒸発部19a、19bと、を備え、冷媒には、圧縮機を潤滑する冷凍機油が混入されており、冷却用蒸発部は、冷媒の流路を形成し、冷媒と冷却用空気とを熱交換させる1本の流路形成部材191を有している。【選択図】図3


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    Title :

    VEHICULAR AIR CONDITIONER


    Additional title:

    車両用空調装置


    Contributors:

    Publication date :

    2021-09-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F24F Klimatisierung , AIR-CONDITIONING / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / F28D Wärmetauscher, soweit in keiner anderen Unterklasse vorgesehen, in denen die Wärmetauschmittel nicht in direkte Berührung miteinander kommen , HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT / F28F Einzelheiten von Wärmetauschern oder Wärmeübertragungsvorrichtungen für allgemeine Verwendung , DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION



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