Box-shaped stacked heat exchanger with comb-shaped backing plates

Abstract

A box-shaped laminated heat exchanger with a comb-shaped backing plate, including a heat exchange core, is characterized in that, in the heat exchange medium corner hole circulation space formed by the extension surface around the corner hole at both ends of the heat exchange plate, there is A comb-shaped backing plate, the comb-shaped backing plate is in the form of a plurality of vertical bars perpendicular to the flat plate and having a certain width on a flat plate with a relatively thin thickness. These vertical bars are distributed on the flat plate at intervals according to requirements, and all vertical bars The height of the strips is consistent, so that two parallel planes are formed on the comb-shaped backing plate and the bottom, and the height of the comb-shaped backing plate is the same as the height of the heat exchange medium corner hole circulation space formed by the extension surface around the corner hole.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a box-shaped stacked heat exchanger with a comb-shaped backing plate Background technique [0002] The prior art of a heat exchanger with internal angular hole distribution has been disclosed in the patent application number 200680011188.3, ​​and it is clearly stated in the patent claims that the first end area and the second end area of ​​the heat exchange plate There are corner holes forming through holes through the heat exchange plate, these corner holes are respectively surrounded by the adjacent edge regions of the corner holes having the plane height of the upper plate and the plane height of the lower plate, the adjacent edge regions of the corner holes are in the first end region and Existing in groups and pairs in the second end area, there is a circle of concave edge bubbles in the adjacent edge area of ​​the corner hole located at the plane height of the upper plate, and a circle o...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the prior art that has been published with patent number 200680011188.3 is that in the edge area adjacent to the corner hole of the above-mentioned heat exchange plate, the convex and concave edge bubbles and the pits and bosses are not actually able to To achieve "make the adjacent edge areas of the corner holes as sealing planes close to each other to ensure sealing, so that the tightening force of each heat exchange plate can be continuously transmitted between the pits and bosses during the mutual tightening process, and strengthen the adjacent edge areas of the corner holes as Vibration and fatigue resistance of sealing planes”

[0004] This is because the product needs a heavy fixture plate to tighten the product during the sealing connection manufacturing process, no matter whether a single stack of products is used to support the fixture plate alone, or two stacks of products are used to carry the fixture plate together, or multiple stacks The product bears against the fixture plate together, because the load-bearing capacity of the product is weak during the sealing connection manufacturing process, and because the heavy fixture plate cannot be placed on the center line of the product very balanced and accurately, it is impossible to balance the tightened product Stable pressure, so in the process of sealing joint manufacturing, the above-mentioned convex and concave edge bubbles and concave and convex pits cannot resist the unbalanced side pressure of the heavy fixture plate in the unbalanced state on the product, which will eventually make the product in the sealing After the connection was manufactured, it was pressed into a crooked shape by the fixture plate and was scrapped

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