A new type of heat exchanger plate group with asymmetrical channel structure

Abstract

The invention relates to a novel heat exchanger plate group with an asymmetric channel structure. The novel heat exchanger plate group comprises at least one unit plate group, wherein the unit plate group comprises two first plates and two second plates, and a plurality of wave crest surfaces and a plurality of wave trough surfaces are alternately arranged on the main panel of each of the first plates and the second plates; the two ends of each wave crest surface are respectively connected with a first slope surface, and the first slope surface is connected with a second slope surface through a horizontal extension surface; the two ends of each wave trough surface are respectively connected with the second slope surface, and the main panel structures of the first plates and the second plates are axisymmetrical; the two first plates and the two second plates are alternately stacked in a manner of a wave trough surface facing a wave crest surface which in turn faces a wave trough surface to form a first channel and a second channel. A brazing heat exchanger formed by taking the plate group as a unit can obtain different volumes and can also ensure that the loading capacities of adjacent heat exchanging medium channels are consistent, and the area of welding contact points of adjacent plates cannot be additionally increased.

Description

technical field [0001] The invention relates to a heat exchanger plate group with a novel asymmetric channel structure. Background technique [0002] Under the existing technical conditions, the plate heat exchanger needs to achieve the effect of different medium circulation spaces (that is, the volumes of the two adjacent heat exchange media flow through are different), and generally adopts an asymmetric corrugated plate structure. , so that two adjacent ripples are inconsistent. However, in this way, due to the difference in the number of welding contact points (that is, the contact density) that constitutes the adjacent medium channels, it is easy to cause the difference in the pressure bearing capacity of the two adjacent heat exchange media to be too large; in addition, the adjacent medium channels The increase in the area of ​​the welding contact point will easily lead to an increase in the thermal resistance of the heat exchange medium, which is not conducive to the ...

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Problems solved by technology

However, in this way, due to the difference in the number of welding contact points (that is, the contact density) that constitutes the adjacent medium channels, it is easy to cause the difference in the pressure bearing capacity of the two adjacent heat exchange media to be too large; in addition, the adjacent medium channels The increase in the area of ​​the welding contact point will easily lead to an increase in the thermal resistance of the heat exchange medium, which is not conducive to the improvement of the heat exchange efficiency of the system

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