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Plate heat exchanger

Inactive Publication Date: 2011-08-04
AIREC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003]An object of the present invention is to create a plate heat exchanger with low temperature losses to the surrounding environment outside the plate heat exchanger. A further object of the invention is to provide a plate heat exchanger which is cost-effective compared with traditional technology and is easy to construct, enabling optimisation of cost and time.

Problems solved by technology

A problem with applying such a casing is that it renders the manufacturing process more expensive and that the casing is subject to wear with the result that temperature losses may occur on portions of the heat exchanger where the insulating material becomes worn or damaged.

Method used

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  • Plate heat exchanger
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Examples

Experimental program
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Embodiment Construction

[0023]FIG. 1 depicts part of a plate heat exchanger (1) in a section through it, which plate heat exchanger (1) comprises a number of cassettes (2a-c) stacked on one another in a plate stack (10). Upper and lower end plates (28a, b) are disposed against the uppermost and lowest plates (3a, b) of the plate stack (10). Within the plate stack (10), on the inside (30) of the plate heat exchanger (1), adjacent plates (3a, b) form the following between them: insulating ducts (6, 12, 14, 15, see FIGS. 2a, b), inner heat transfer ducts (4), outer heat transfer ducts (11), end ducts (29a, b) between the respective end plates (28a, b) and the uppermost and lowest plates (3a, b) of the plate stack (10).

[0024]The respective plates (3a, b) in the plate stack (10) derive from a single type of plate. To facilitate the stacking of the plates (3a, b) against one another during the manufacturing process, they may in their respective adjacent edge portions (5, 13, 16, 17, see FIGS. 2a, b) be provided ...

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PUM

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Abstract

The invention relates to a plate heat exchanger (1) comprising at least one cassette (2a-c) formed by a pair of adjacent plates (3a, b) in a plate stack (10). An inner heat transfer duct (4) runs between adjacent plates (3a, b) within the cassette (2a-c). An insulating duct (6, 12) is disposed adjacent to the inner heat transfer duct (4) along at least one edge portion of the cassette (2a-c). The insulating duct (6, 12) is configured to insulate and separate the inside of the plate heat exchanger's heat transfer ducts (4, 11) from the environment outside the plate heat exchanger (1) in a direction transverse to a main heat transfer direction (7) through the plates (3a, b) of the cassette (2a-c) and thereby reduce temperature losses from the plate heat exchanger (1) to the surrounding environment.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a plate heat exchanger for reducing temperature losses to the surrounding environment.BACKGROUND TO THE INVENTION[0002]Prior art endeavours to ensure that heat transfer between media in a heat exchanger reaches as high efficiency as possible. It is known that by placing a casing of insulating material round it the efficiency of a heat exchanger can be increased in that temperature losses to the surrounding environment outside the heat exchanger can thereby be reduced by the insulating extra material. A problem with applying such a casing is that it renders the manufacturing process more expensive and that the casing is subject to wear with the result that temperature losses may occur on portions of the heat exchanger where the insulating material becomes worn or damaged.SUMMARY OF THE INVENTION[0003]An object of the present invention is to create a plate heat exchanger with low temperature losses to the surrounding environ...

Claims

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Application Information

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IPC IPC(8): F28F3/12
CPCF28F2270/00F28D9/005F28F3/08
Inventor PERSSON, SVEN
Owner AIREC