HEAT EXCHANGER

To provide a heat exchanger which can suppress the leakage of a refrigerant when water is frozen and expanded in volume.SOLUTION: A heat exchanger 100 exchanges heat between water and a refrigerant. The heat exchanger 100 comprises a first flow passage 111 in which the water flows, and a second flow...

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Bibliographische Detailangaben
Hauptverfasser: YAMADA TAKUO, TERAI KO, EMURA CHIE, HIROKAWA TOMOKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a heat exchanger which can suppress the leakage of a refrigerant when water is frozen and expanded in volume.SOLUTION: A heat exchanger 100 exchanges heat between water and a refrigerant. The heat exchanger 100 comprises a first flow passage 111 in which the water flows, and a second flow passage 121 in which the refrigerant flows. A member for forming the first flow passage 111, or a point at which the members for forming the first flow passage 111 are joined to each other functions as a fragile part 190 which is lower than the other point in strength. In the heat exchanger 100, when the water is frozen and expanded in volume, the member for forming the first flow passage 111, or the point at which the members for forming the first flow passage 111 are joined to each other which functions as the fragile part 190 is broken prior to the other point. Therefore, in the heat exchanger 100, when the water is frozen and expanded in volume, it is suppressed that the refrigerant leaks due to the breakage of members for forming a second flow passage 121 and a joint part.SELECTED DRAWING: Figure 6 【課題】水が凍結し体積膨張をした場合に、冷媒が漏洩することが抑制される熱交換器を提供する。【解決手段】熱交換器100は、水と冷媒との熱交換を行う熱交換器である。熱交換器100は、水が流れる第1流路111と、冷媒が流れる第2流路121とを備える。第1流路111を形成する部材又は第1流路111を形成する部材どうしが接合された箇所が他の箇所よりも低強度な脆弱部190として機能する。熱交換器100は、水が凍結し体積膨張を起こした場合に、他の箇所よりも先に、脆弱部190として機能する第1流路111を形成する部材又は第1流路111を形成する部材どうしが接合された箇所が破断する。このため、熱交換器100によれば、水が凍結し体積膨張をした場合に、第2流路121を形成する部材や接合部が破断して冷媒が漏洩することが抑制される。【選択図】図6