Temperature equalization control method of liquid-cooled plate heat exchanger
A control method and heat exchanger technology, applied in the direction of heat exchanger type, heat exchanger shell, indirect heat exchanger, etc., can solve the problems of not only considering the heat dissipation effect, increasing pressure drop, and small heat dissipation improvement effect. , to avoid the local temperature is too high or too low, the temperature difference is large, and the effect of reducing the flow dead zone
Active Publication Date: 2021-02-09
CHINA NORTH VEHICLE RES INST
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Problems solved by technology
However, this design cannot only consider the heat dissipation effect, but also from the perspective of system economy, try to avoid the situation where the pressure drop increases sharply after adding fins and the heat dissipation improvement effect is minimal
Method used
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[0051] The present disclosure will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0052] like Figure 1-4 A liquid-cooled plate heat exchanger with a square structure is shown, including a bottom plate 10 and a cover plate 20. The bottom plate 10 and the cover plate 20 are square structures, and the cover plate 20 and the bottom plate 10 are assembled together to form a square cavity. The cooling liquid (preferably water) flows in the cavity, and baffles 401-404 and ribs 501-504 are arranged on the bottom plate 10, and the baffles include the first baffle 401 located in the center of the bottom plate, surrounded by the second A second baffle 402 outside the first baffle 401, a third baffle 403 outside the second baffle 402, and a fourth baffle 404 outside the third baffle 403;
[0053] As preferred, such as Figure 1-3 As shown, the first baffle 401 includes four pieces, and each first baffle 401 includes two baffle walls...
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The invention provides a temperature equalization control method of a liquid-cooled plate heat exchanger. A bottom plate and a cover plate are included, the highest temperature and the lowest temperature of temperatures of four outlets are detected, and when the difference value of the highest temperature and the lowest temperature exceeds a certain value, a controller automatically controls the opening degree of a valve of an outlet where the lowest temperature is located to be reduced, and the opening degree of a valve of an outlet where the highest temperature is located to be increased, sothat the liquid flow of the outlet where the lowest temperature is located is reduced, and the liquid flow of the outlet where the highest temperature is located rises. The heat exchange amount of the liquid participating in the lowest temperature side and the highest temperature side is adjusted by adjusting the liquid flow of the outlet with the lowest temperature and the outlet with the highest temperature. By adjusting the liquid flow, the overall output temperature can be kept balanced, and the local temperature is prevented from being too high or too low.
Description
technical field [0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a plate heat exchanger in which a flow guide structure and fins are combined. Background technique [0002] The plate heat exchanger is the heat exchanger with the highest heat exchange efficiency among all kinds of heat exchangers at present. It has the advantages of small space occupation and convenient installation and disassembly. It is composed of stamped concave-convex stainless steel plates. The concave-convex lines between two adjacent plates are combined at 180 degrees. Therefore, the concave-convex ridges between the two plates of the plate heat exchanger form staggered contact points, and the contact points After being combined by vacuum welding, the high-pressure staggered flow structure of the plate heat exchanger is formed. These staggered flow structures make the hot and cold liquids in the plate heat exchanger generate strong turbulence and ach...
Claims
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Login to View More IPC IPC(8): F28D9/00F28F3/06F28F9/22F28F9/24F28F27/02
CPCF28D9/0037F28F3/06F28F9/22F28F9/24F28F27/02
Inventor 张佳卉杨勇石军刘洋刘江权李源浩曹元福赵春伟籍力
Owner CHINA NORTH VEHICLE RES INST