Plate heat exchanger

Abstract

The invention provides a plate heat exchanger. A plate sheet of the plate heat exchanger is provided with a main heat exchange area and a plurality of corrugated structures arranged at intervals; a plurality of corrugated structures form a plurality of wave crest parts and a plurality of wave trough parts; the wave crest parts and the wave trough parts are arranged alternately; every two adjacent wave trough parts have the same or different depths; the depths of the wave trough parts are calculated based on the wave crest parts; in the direction perpendicular to the arrangement direction of the corrugated structures, each corrugated structure comprises at least two straight parts and a bent part; each bent part is located between the two corresponding adjacent straight parts; every two adjacent straight parts and the bent part located between the two adjacent straight parts form a herringbone corrugated pattern; the bent parts form corners of the herringbone corrugated patterns; at least one bent part is provided with a communicating part; at least part of each communicating part penetrates the corresponding bent part in the arrangement direction of the corrugated structures; every two adjacent wave trough parts communicate through the corresponding communicating part; and the plate sheet forms a flow channel through the communicating parts, and fluid can pass through the wave crest parts through the flow channel. The heat exchange performance of the plate heat exchanger can be improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to a plate heat exchanger. Background technique [0002] Plate heat exchangers are recognized as highly efficient and compact liquid-cooled heat exchangers, and are widely used in refrigeration and air conditioning, new energy vehicles and other industries. In the related art, the plates of the plate heat exchanger are provided with a herringbone wave pattern. When the adjacent plates are welded, the plates are prone to form large solder joints at the sharp corners of the herringbone wave pattern that are not conducive to fluid flow. As a result, the plate heat exchanger has uneven distribution of fluid on the plate, which reduces the effective heat exchange area of ​​the plate, that is, the utilization rate of the plate surface is low. Thus affecting the heat transfer performance of the plate heat exchanger. Contents of the invention [0003] The present application provi...

AI Technical Summary

Problems solved by technology

In the related art, the plates of the plate heat exchanger are provided with a herringbone wave pattern. When the adjacent plates are welded, the plates are prone to form large solder joints at the sharp corners of the herringbone wave pattern that are not conducive to fluid flow. As a result, the plate heat exchanger has uneven distribution of fluid on the plate, which reduces the effective heat exchange area of ​​the plate, that is, the utilization rate of the plate surface is low

Thereby affecting the heat transfer performance of the plate heat exchanger

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