Heat exchanger

Abstract

The invention discloses a plate heat exchanger. The heat exchanger comprises a plurality of first circulating plates and a plurality of second circulating plates, wherein the first circulating platesand the second circulating plates are arranged in mutually spaced and stacked modes, and a first circulating channel and a second circulating channel which are arranged at intervals are formed betweeneach first circulating plate and the corresponding second circulating plate; the heat exchanger further comprises a first outer connecting pipe, a second outer connecting pipe, a third outer connecting pipe and a fourth outer connecting pipe; at least one damping structure is further arranged in the heat exchanger, and at least one of the first outer connecting pipe, the second outer connecting pipe, the third outer connecting pipe and the fourth outer connecting pipe communicates with the first circulating channel or the second circulating channel through the damping structure, wherein the through-flow area of the damping structure is smaller than the flow-through area of an outer connecting pipe main body part communicating with the damping structure. According to the heat exchanger, the phenomena of refrigerant gas and liquid layering caused by the fact that an inlet pipe section of a fluid is long can be inhibited, the distribution uniformity of the fluid in refrigerant channels in a core body of the plate heat exchanger is improved, so that the heat exchange performance of the plate heat exchange is improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a heat exchanger. Background technique [0002] A plate heat exchanger is defined as a heat exchanger in which the heat transfer element is composed of circulation plates. The circulation plate is its core component. The common fin types are: herringbone corrugation, horizontal straight corrugation, spherical corrugation, oblique corrugation and vertical corrugation etc. In order to enhance the heat exchange effect of the plate heat exchanger, people have continuously developed and improved its circulation plate structure. [0003] Compared with the traditional heat exchanger, the structure of the plate heat exchanger is very compact; it is mostly made of aluminum alloy, which is very light; at the same time, due to the high thermal conductivity of the circulating plates, the plate heat exchanger has a high efficiency. Therefore, the plate heat exchanger has strong adapta...

AI Technical Summary

Problems solved by technology

[0006] Since the external pipeline of the plate heat exchanger is directly connected with the internal flow channel of the plate heat exchanger, the external fluid directly flows into the distribution flow channel inside the plate heat exchanger. When it enters the distribution flow channel of the plate heat exchanger, the gas-liquid stratification phenomenon of the fluid in the distribution flow channel is intensified, so that some fluids entering the flow channels between the plates have more gas and some liquid, thereby reducing its The uniformity of distribution in each flow channel reduces the heat transfer performance of the plate heat exchanger

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