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A plate heat exchanger

A plate heat exchanger, heat exchanger technology, applied in the direction of heat exchanger type, indirect heat exchanger, heat exchange equipment, etc., can solve the problem of material uneconomical and so on

Inactive Publication Date: 2009-07-15
SWEP INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is an uneconomical way to use materials in exchangers for heat transfer

Method used

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  • A plate heat exchanger
  • A plate heat exchanger
  • A plate heat exchanger

Examples

Experimental program
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Embodiment Construction

[0019] figure 1 is a plan view of a plate 1 of a known and widely used plate heat exchanger provided with a herringbone pattern of ridges 2 and depressions 3 . This type of plate stack is formed in a heat exchanger after turning the plates in the stack over each other in their plane. figure 2 It is shown how the ridges and valleys would then intersect each other.

[0020] image 3 - is along figure 1 The cross-section of the line A-A in the middle - shows the pitch P and the punching depth D, both of which are important in characterizing the plate heat exchanger.

[0021] Figure 4 is along figure 2 The section of the B-B line in the middle, the section passes through the basis Figure 1-3 The four plates in the heat exchanger. The two flows of heat exchange fluid confined by the plates are shown with different hatching. It can be appreciated that the two flow paths provide equal pressure drops at equal mass flows.

[0022] By increasing the pitch P and flattening...

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PUM

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Abstract

A plate heat exchanger comprising separate flow paths for two flows of fluid said paths having different pressure drops at equal mass flows may according to the invention be designed economically by stacking pairs of two plates (4, 5) provided with pressed patterns, at least one of the plates (4) in a pair (4, 5) being provided with at least two different press depths (D 1 , D 2 ), the smaller (D 2 ) being at least 40% of the greater (D 1 ).

Description

technical field [0001] The present invention relates to a plate heat exchanger comprising at least two separate flow paths for exchanging heat of a first and a second fluid, said two flow paths being substantially defined by permanently interconnected heat exchanger plates, said The heat exchange plates are provided with a herringbone pattern of ridges and depressions and provide differential pressure drops at equal mass flow rates of the two fluids. Background technique [0002] Many of the aforementioned types of heat exchangers are used to heat tap water from hot water and also to heat residential premises. The inlet temperature of the heating water may be, for example, 75°C, and the outlet temperature thereof may be about 60°C. The tap water inlet temperature may be about 10°C and its outlet temperature may be 55°C. This means that the mass flow of heating water must be 2.5 times the mass flow of tap water. Therefore, it is economical to make the cross-section of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D9/00F28F3/04
CPCF28D9/005F28F3/04F28D9/00
Inventor P·尼尔松
Owner SWEP INT