Heat exchangers and air conditioning units

Abstract

To provide a heat exchanger and an air conditioner capable of forming an upward flow of the refrigerant even if the refrigerant is not directly supplied to the lower portion of the space where the upward flow of the refrigerant occurs inside the header. A plurality of flat perforated tubes (21b) are connected at different heights of the first inner space (23a) of the turn-back header collecting pipe (23) of the outdoor heat exchanger (20). A circulation structure is adopted in the first inner space (23a), and the circulation structure includes a first partition plate (51), a first inflow port (41x) and a first lower communication passage (51y), wherein the first inflow port ( 41x) is used to make the refrigerant rise in the first outflow space (51a), and the first lower communication passage (51y) makes the refrigerant from the first upper communication passage (51x) in the first circulation space (51b) Descend and guide it again to the first outflow space (51a). One end of the flat porous tube (21b) is connected to either one of the first outflow space (51a) and the first circulation space (51b). The communication pipe (24) is connected to the space below the first circulation space (51b) in the first rectifier plate (41).

Description

technical field [0001] The invention relates to a heat exchanger and an air conditioner. Background technique [0002] Conventionally, there is known a heat exchanger which has a plurality of flat tubes, fins joined to the plurality of flat tubes, header headers respectively connected to one end side and the other end side of the plurality of flat tubes, And the heat exchanger exchanges heat between the refrigerant flowing inside the flat tubes and the air flowing outside the flat tubes. [0003] For example, in the heat exchanger described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2-219966), the following structure is adopted: both ends of a plurality of outflow pipes extending in the horizontal direction are respectively connected to collectors extending in the vertical direction. Tube manifold. [0004] In the heat exchanger described in this patent document 1, there is the following technical problem: in the inside of the header tubes extending in...

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Problems solved by technology

[0004] In the heat exchanger described in this patent document 1, there is the following technical problem: in the inside of the header tubes extending in the vertical direction, since the liquid-phase refrigerant with a large specific gravity gathers below and the gas-phase refrigerant with a small specific gravity gathers above, thus creating a bias current

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