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发明公开
CN107024136A 热交换器 有权

热交换器
摘要：
提供了一种热交换器。热交换器(23)中形成有多个主热交换部(51a‑51c)和多个辅助热交换部(52a‑52c)。第一总集合管(60)中形成有与所有主热交换部(51a‑51c)的扁平管(33)连通的上侧空间(61)。该热交换器包括排出促进机构(100)，该排出促进机构(100)由配管(78)构成，该配管(78)连接多个上述热交换部(51a‑51c)中位于最下方的热交换部(51a)和多个上述辅助热交换部(52a‑52c)中位于最下方的辅助热交换部(52a)。因此，会促进在进行除霜动作时液态制冷剂从第一主热交换部(51a)下部排出，除霜所需要的时间缩短。
摘要（英）：

Provided is a heat exchanger. In a heat exchanger (23), a plurality of main heat exchange parts (51a-51c) and a plurality of auxiliary heat exchange parts (52a-52c) are formed. In a first header collecting tube (60), an upper space (61) that communicates with flat tubes (33) of all of the main heat exchange parts (51a-51c) is formed. The respective auxiliary heat exchange parts (52a-52c) are connected in series with the main heat exchange parts (51a-51c) corresponding thereto. Among the number ratios between the flat tubes (33) of the main heat exchange parts (51a-51c) and the auxiliary heat exchange parts (52a-52c) which correspond to each other, the number ratio regarding the first main heat exchange part (51a) located undermost is minimum. Therefore, the discharge of a liquid refrigerant from the bottom of the first main heat exchange part (51a) is accelerated during a defrosting operation, and the time required for defrosting is shortened.

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