INTERNAL HEAT EXCHANGER AND REFRIGERATION CYCLE OF VEHICULAR AIR CONDITIONING DEVICE COMPRISING THE SAME

• Main Authors: ETO HITOHISA, HAYASHI NAOTO, ARAKI DAISUKE, NAGANO HIDEKI
• Format: Patent
• Language: English; Japanese
• Published: 10.10.2019
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEAT PUMP SYSTEMS; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

To provide an internal heat exchanger that allows attachment/detachment work of an expanding device to be performed from the side of an engine room via a through hole provided in a dash panel, and a refrigeration cycle of a vehicular air conditioning device comprising the same.SOLUTION: An internal heat exchanger 100 according to the present invention comprises a heat exchange part 410, a refrigerant inlet/outlet part 420, and an expanding device connection part 130. The internal heat exchanger is detachably fixed to an expanding device by a fixing member 140 comprising a screw head part 141 and a screw shaft part 142. The screw shaft part is inserted into a first screw passage part of the expanding device connection part and inserted into a fourth screw passage part 41 of the expanding device. The refrigerant inlet/outlet part is fixed to a plate-like member 101b of the heat exchange part. The expanding device connection part is fixed to a plate-like member 101a of the heat exchange part. The heat exchange part comprises a third screw passage part 413a. The screw shaft part is inserted into the third screw passage part, and the screw head part is locked on an opening edge of the first screw passage part.SELECTED DRAWING: Figure 5 【課題】本開示は、ダッシュパネルに設けた貫通孔を介してエンジンルーム側から膨張装置の着脱作業を可能とする内部熱交換器及びそれを備える車両用空調装置の冷凍サイクルを提供することを目的とする。【解決手段】本発明に係る内部熱交換器１００は、熱交換部４１０と、冷媒出入口部４２０と、膨張装置接続部１３０と、を備え、内部熱交換器は、ねじ頭部１４１とねじ軸部１４２とを有する固定部材１４０によって膨張装置に着脱可能に固定され、ねじ軸部は、膨張装置接続部の第１ねじ通し部に挿通されるとともに、膨張装置の第４ねじ通し部４１に挿し込まれ、冷媒出入口部は、熱交換部の板状部材１０１ｂに固定され、膨張装置接続部は、熱交換部の板状部材１０１ａに固定され、熱交換部は、第３ねじ通し部４１３ａを有し、ねじ軸部は、第３ねじ通し部に挿通され、かつ、ねじ頭部は、第１ねじ通し部の開口縁に係止される。【選択図】図５