a heat exchanger
A heat exchanger and heat exchange unit technology, applied in the field of heat exchange, can solve problems such as aggravation, reduction of distribution uniformity, and reduction of heat exchange performance of plate heat exchangers, so as to achieve the effect of improving heat exchange performance and distribution uniformity
Active Publication Date: 2019-05-31
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
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Problems solved by technology
In the distribution flow channel, the gas-liquid stratification phenomenon of the fluid is intensified, so that some fluids entering the flow channel between the plates have more gas and some liquid, which further reduces their distribution uniformity in each flow channel, making the plate type The heat transfer performance of the heat exchanger is reduced
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[0031] The invention provides a heat exchanger. By setting damping holes in the heat exchange core, the adverse effects caused by the gas and liquid stratification of the refrigerant can be reduced, the flow of the refrigerant becomes turbulent, and the performance of the refrigerant in exchange is improved. The distribution uniformity in the refrigerant channels between the plates inside the thermal core improves the heat transfer performance of the plate exchange.
[0032] In this specification, the diameter when the area of the orifice is converted into a circle with the same area is defined as the equivalent diameter; the distance between the center of the first orifice and the center of the second orifice in the flow plate is defined as the flow plate The length L of the middle heat exchange area, the distance between the center of the first orifice and the center of the fourth orifice in the flow plate is defined as the width W of the heat exchange area in the flow plat...
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The invention discloses a plate heat exchanger. The heat exchanger is characterized in that a heat exchange core comprises a plurality of stacked first circulating plates, a plurality of stacked second circulating plates and at least one third circulating plate, wherein first circulating channels and second circulating channels, which are mutually spaced, are formed between the first circulating plates and the second circulating plates; first circulating channels and second circulating channels, which are mutually spaced, are formed between the third circulating plates and the first circulating plates, or between the third circulating plates and the second circulating plates; first orifices in the circulating plates are stacked to form a first channel communicating with a first external pipe; the areas of the first orifices in the first circulating plates are S1; the areas of second orifices in the second circulating plates are S2; the areas of the first orifices in the third circulating plates are S3; and the values of S1 and S2 are approximately the same, and S3 is smaller than MIN (S1, S2). The heat exchanger provided by the invention can effectively inhibit gas-liquid stratification of a refrigerant, and improves the distribution uniformity of a fluid in the circulating channels, so that the heat exchange performance of the plate heat exchanger 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...
Claims
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IPC IPC(8): F28D9/00F28F3/08
Inventor 不公告发明人
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD