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Heat exchanger

A technology of plate heat exchangers and partition plates, which is applied in the direction of heat exchanger fixation, heat exchange equipment, indirect heat exchangers, etc., can solve problems such as sealing, and achieve the effect of high sealing and mechanical stability

Inactive Publication Date: 2011-04-27
LINDE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It has been found that in such plate heat exchangers problems arise in principle when welding the headers to the transition between the side strips and the partition due to the welding material located between the side strips and the partition and In addition, sealing problems occur with increasing operating hours

Method used

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Embodiment Construction

[0026] figure 1 A plate heat exchanger 1 constructed according to the method according to the invention is shown. According to this embodiment of the invention, the at least partially corrugated plates 9 and separating plates 10 with side bars 11 are stacked one above the other, provided with solder and soldered in such a way that a unit 2 is produced. The unit is closed to the outside by a cover plate 12 . On the unit 2 produced in this way, the contour of the intermediate part 3 is milled out at corresponding locations 4 . In this embodiment of the invention a frame is used as intermediate part 3 . The frame 3 is positioned in a milling out at the location 4 , provided with solder and attached by means of spot welding. The frame 3 is then soldered to the heat exchanger unit 2 in a second step. Headers 5a and 5b are welded to the frame 3, respectively. The heat exchanger 1 thus produced serves to exchange heat between two different fluids which are fed in and out via hea...

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Abstract

The invention provides a method for producing a plate heat exchanger (1). Wavy profiled sheets (9) and separating sheets (10), together with sidebars (11), are stacked one above the other, provided with solder and soldered together in such a way that a block (2) is obtained. The block is closed off outwardly by means of the cover sheets (12). The contours of the intermediate pieces (3) are milled out at the respective positions (4) on the block (2) thus obtained. In a refinement of the invention, frames are used as intermediate pieces (3). The frames 3 are positioned in the milled-out portions at the positions (4), provided with solder and tacked on by means of spot welding. Subsequently, in a second step, the frames (3) are soldered onto the heat exchanger block (2). The headers (5a, 5b) are in each case welded onto the frames (3).

Description

technical field [0001] The invention relates to a method for producing a plate heat exchanger from a plurality of rectangular partition plates arranged in a stack at a distance from one another so that channels are formed between the partition plates, wherein , the channels are limited on at least two sides by spacers (side bars), solder is applied at the contact points between the separator plates and the side bars, the stacked separator plates and side bars being welded into A unit on which there are means (manifolds) for the supply and discharge of fluid. The invention is described with reference to a plate heat exchanger made of aluminum, but can in principle be used to produce any heat exchanger having the features of the preamble of claim 1 . The invention is particularly suitable for producing plate heat exchangers based on the so-called rod-plate principle, made of stainless steel or high-temperature-resistant steel, Background technique [0002] Plate heat exchang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/26B23K1/00
CPCF28F21/089F28D9/0062F28F2275/04F28F21/083F28F2275/06Y10T29/49393
Inventor R·迪茨H·艾格纳R·旺克F·温嫩
Owner LINDE AG
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