To directly fix a double-tube to a connector by eliminating refrigerant piping branched from the double-tube.SOLUTION: An inside flow passage 18b in which a refrigerant at a low-pressure side of a refrigeration cycle 11 flows is formed in an inner tube 182 of a double-tube, and an inter-inside/outside flow passage 18a in which a refrigerant at a high-pressure side of the refrigeration cycle 11 flows is formed between an outer tube 181 and the inner tube 182. An internal heat exchanger comprises: an expansion valve-side connector 186 interposed between tips of the outer tube 181 and the inner tube 182 and connection objective members 14, 35 and 37, and making the inside flow passage 18b and the inter-inside/outside flow passage 18a communicate with refrigerant flow passages of the connection objective members; and an anti-expansion valve side connector 31. An outside diameter of the outer tube is 30 mm or smaller, and a ratio of a difference between an inside diameter of the outer tube and an outside diameter of the inner tube with respect to the inside diameter of the outer tube is 25% or lower. The internal heat exchanger also comprises seal members 191, 192 for preventing the leakage of the refrigerants in the outer tube 181 and the inner tube 182, and the outer ring 181 and the inner ring 182, and the expansion valve-side connector 186 and the anti-expansion valve side connector 31 are mechanically fixed to each other.SELECTED DRAWING: Figure 15

    【課題】二重管から分岐する冷媒配管を削減し、二重管をコネクタに直接固定する。【解決手段】二重管の内管182の内部に冷凍サイクル11の低圧側の冷媒が流れる内側流路18bが形成され、外管181と内管182との間に冷凍サイクル11の高圧側の冷媒が流れる内外間流路18aが形成される。かつ、外管181の先端および内管182の先端と接続対象部材14、35、37との間に介在して、内側流路18bおよび内外間流路18aを接続対象部材の冷媒流路と連通させる膨張弁側コネクタ186、反膨張弁側コネクタ31を備える。外管の外径は30ミリメートル以下であり、外管の内径に対する外管の内径と内管の外径との差との比が25%以下である。外管181および内管182の冷媒の洩れを防止するシール部材191、192を備え、外管181および内管182と膨張弁側コネクタ186、反膨張弁側コネクタ31とが機械的に固定される。【選択図】図15


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    Titel :

    INTERNAL HEAT EXCHANGER AND REFRIGERATION CYCLE DEVICE HAVING INTERNAL HEAT EXCHANGER


    Weitere Titelangaben:

    内部熱交換器及び内部熱交換器を備える冷凍サイクル装置


    Beteiligte:
    NAKAMURA FUMIAKI (Autor:in) / MARUYAMA MINORU (Autor:in) / INASAWA HIDEAKI (Autor:in) / MUTAI MASAO (Autor:in) / SATO KOICHI (Autor:in) / HARADA NOBUMICHI (Autor:in)

    Erscheinungsdatum :

    18.06.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / 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 / 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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