Plate heat exchanger

Abstract

A plate-type heat exchanger comprising a plate component (10). The plate component (10) is provided with inlet / outlet channels (12, 13) for two working medium fluids. The plate component (10) comprises first heat exchange plates (1), second heat exchange plates (2), third heat exchange plates (3) and fourth heat exchange plates (4) in the same peripheral shape, wherein the heat exchange plates are sequentially arranged according to a cycle period formed by one first heat exchange plate (1), one second heat exchange plate (2), one third heat exchange plate (3) and one fourth heat exchange plate (4), first fluid channels (5) through which first fluids (R) flow are arranged between each first heat exchange plate (1) and the corresponding second heat exchange plate (2) and between the corresponding third heat exchange plate (3) and the corresponding fourth heat exchange plate (4), and second fluid channels (6) through which second fluids (W) flow are arranged between each second heat exchange plate (2) and the corresponding third heat exchange plate (3) and between the corresponding fourth heat exchange plate (4) and the corresponding first heat exchange plate (1) adjacent thereto. The plate component (10) also comprises at least one partition space (11) which is in communication with every two adjacent first fluid channels (5). The partition spaces (11) are closed relative to the second fluid channels (6). In each partition space (11), the corresponding first and second heat exchange plates (1, 2) are arranged on a first side, and the corresponding third and fourth heat exchange plates (3, 4) are arranged on a second side opposite to the first side.

Description

technical field [0001] The invention relates to the fields of refrigeration, air conditioning, industrial refrigeration, heating and the like, and particularly relates to a plate heat exchanger. Background technique [0002] For two-phase flow inside a plate heat exchanger, the fluid distribution between the different fluid channels between the heat exchange plates is always a challenge to achieve high efficiency and reliability. [0003] Existing fluid distribution devices can be O-rings, plug-in distributors, guide tubes, etc. But as the heat flow and crimp depth decrease, the holes in the dispensing device are getting smaller and smaller, which results in high and tight tolerances for the holes. What's more, it is becoming increasingly difficult to manufacture very small holes with such tight tolerances. Moreover, this also leads to a rapid increase in the cost of the dispensing device. [0004] As the diameter of the holes continues to decrease, it becomes more and mo...

AI Technical Summary

Problems solved by technology

This makes it difficult to make large diameter holes for each smaller individual fluid passage

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