Plate type heat exchanger with asymmetric channels

Abstract

The invention relates to the technical field of heat exchangers, in particular to a plate type heat exchanger with asymmetric channels. The plate type heat exchanger comprises a plurality of heat exchange plates stacked to form heat exchange channels, the heat exchange plates are first plates and second plates which are alternately arranged, the first plates and the second plates both comprise a main panel and surrounding baffles, a plurality of convex ridges are arranged on the main panel, a concave valley is formed between every two adjacent convex ridges, and a plurality of grooves are evenly distributed in the concave valley of the first plates, so that asymmetric channels with different volumes are formed in the two sides of the second plates. According to the heat exchanger, the multiple evenly-distributed grooves are formed in the valley of the first plates, asymmetric channels with different volumes are formed in the two sides of the second plates, the heat exchange performanceis improved, due to the arrangement of the grooves, the convex ridges of the second plates are clamped between every two adjacent grooves, the inclined planes on two sides of the convex ridges and the inclined planes on two sides of the grooves which are in contact with each other effectively increase the welding area, the pressure-bearing effect of the heat exchanger is enhanced, and the heat exchange performance and the pressure-bearing effect are both considered.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a plate heat exchanger with asymmetric channels. Background technique [0002] The brazed plate heat exchanger is a high-efficiency heat exchanger made by stacking a series of metal sheets with a certain corrugated shape and brazing. Channels are formed between the various plates, and heat exchange is performed through the plates. Compared with conventional shell-and-tube heat exchangers, its heat transfer coefficient is much higher under the same flow resistance and pump power consumption, and it tends to replace shell-and-tube heat exchangers within the applicable range. [0003] The heat transfer performance and pressure bearing performance of the brazed plate heat exchanger are two important technical indicators of the product. Under the premise of ensuring the customer's design conditions, the heat transfer performance of the heat exchanger should be improved as mu...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the heat exchange performance and the pressure bearing effect of the existing plate heat exchanger cannot be balanced, the present invention provides a plate heat exchanger with asymmetric channels, the heat exchanger passes Several evenly distributed grooves are set on the valley to form asymmetric channels with different volumes on both sides of the second plate to increase heat transfer performance, and the grooves are set so that the ridges of the second plate are located on two adjacent sides. Between the two grooves, the slopes on both sides of the ridges and the slopes on both sides of the grooves in contact with each other effectively increase the welding area and enhance the pressure bearing effect of the heat exchanger, so that the heat transfer performance and pressure bearing effect are taken into account.

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