Heat exchange device and air conditioner

Abstract

The invention provides a heat exchange device and an air conditioner. The heat exchange device comprises a heat exchanger, a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline correspondingly communicate with the two ends of the heat exchanger, the heat exchange device further comprises a first valve body, a second valve body, a first branch pipe provided witha third valve body, and a second branch pipe provided with a fourth valve body, and the two ends of the first branch pipe and the second branch pipe are correspondingly connected with the first pipeline and the second pipeline; the two ends of the first pipeline are a first end point and a second end point, the two ends of the second branch pipe are a third end point and a fourth end point, the first valve body is arranged between the first end point and the third end point, and the second valve body is arranged between the second end point and the fourth end point; the first end point is further away from one end of the heat exchanger than the third end point, and the second end point is closer to the other end of the heat exchanger than the fourth end point; and a refrigerant flows intofrom the first pipeline or the second pipeline, and the direction of the refrigerant flow to the heat exchanger is always opposite to the direction of external cooling fluid flow into the heat exchanger. According to the provided heat exchange device, the efficiency of heat exchange is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and more specifically relates to a heat exchange device and an air conditioner. Background technique [0002] The heat exchanger is one of the four major components of the air conditioner, and its design directly affects the performance of the air conditioner. In order to obtain better heat transfer performance of the air conditioner, the flow path design of the heat exchanger usually requires a counterflow design to improve the cost performance of the air conditioner. [0003] But for an air conditioning system, after the conventional heat exchanger is designed, the flow direction has been determined and cannot be changed. For heat pump air conditioners, when cooling and heating are running, the flow of refrigerant in the system is opposite. That is to say, if the heat exchanger is designed according to the countercurrent flow during cooling, and the air conditioner is running for hea...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a heat exchange device and an air conditioner to solve the problem of low heat exchange efficiency of heat exchangers in the prior art

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