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Plate heat exchanger

A technology of plate heat exchanger and heat exchanger, which is applied in the direction of heat exchange equipment, heat exchanger type, heat exchanger shell, etc., can solve the problems of shortening the life of the heat exchanger and easy fatigue.

Inactive Publication Date: 2010-06-16
SWEP INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even the material used for heat exchange plates (usually steel) is prone to fatigue when exposed to large and rapid temperature differences
Therefore, the life of the exchanger generally decreases as the temperature of the high temperature fluid passing through the heat exchanger increases

Method used

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  • Plate heat exchanger
  • Plate heat exchanger
  • Plate heat exchanger

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 A known heat exchange plate 1 is shown provided with an embossed V-shaped pattern of ridges and depressions (reference number 2). The plate 1 is seen from above and its upper side is suitable for restricting the flow of cooling water, while its other side is suitable for restricting the flow of hot gas (for example having a temperature of 1300°C). Plate 1 is equipped with four holes 3-6, hole 3 is the inlet of high temperature fluid (ie heating fluid), hole 4 is the outlet of cooling water, hole 5 is the outlet of high temperature fluid, hole 6 is the inlet of cooling water.

[0022] The flow of cooling water along the plate 1 is indicated by a number of arrows 7 and 8, the larger arrow 7 indicating the direction of greater mass flow and the arrow 8 indicating the direction of less mass flow. Already soldered to the adjacent heat exchange plate ( figure 1 Circular edge 9 of plate 1 on (not shown in ) defines hole 3 along an annular region 10 between edge 9 an...

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PUM

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Abstract

A plate heat exchanger comprising plates (21, 31) interconnected by soldering and adapted to exchange heat between a high and a low temperature fluid may be designed to improve the cooling of the parts of the plates located near inlets (3) for the high temperature fluid by providing separate fluid channels (23, 26) in pairs of plates (21, 31) guiding low temperature fluid, said separate channels (23, 26) at least partly surrounding said inlets (3) for the high temperature fluid.

Description

technical field [0001] The present invention relates to a plate heat exchanger suitable for exchanging heat between at least one high temperature fluid and at least one cooling fluid, comprising a plurality of stacked heat exchange plates, each heat exchange plate comprising: (a) an inlet, (b) an outlet for a cooling fluid, (c) an outlet for said high temperature fluid, and (d) an inlet for said cooling fluid, the stacked heat exchange plates defining channels for at least two heat exchange fluids, and Pairs of heat exchange plates defining passages for cooling fluid therein are welded together along contact areas to form flanges projecting into high temperature fluid inlets. Background technique [0002] The high temperature fluid may be an air flow due to the combustion of fuel (such as oil or natural gas), and the cooling fluid may be water flow used for residential heating. It is indeed desirable to design heat exchangers that are as small as possible and inexpensive to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D9/00F28F3/08F28F9/22
CPCF28D9/005Y10S165/364F28F2265/10F28D9/00
Inventor S·安德松H·安德烈T·达尔贝里
Owner SWEP INT