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Multi-process detachable heat exchanger and dedicated heat exchange plate thereof

a heat exchanger and multi-process technology, applied in indirect heat exchangers, laminated elements, lighting and heating apparatus, etc., can solve the problems of limited maximum length of heat exchangers, less spatial optimization of installation, unstable structure of heat exchangers, etc., and achieves the effect of facilitating maintenance and improving efficiency

Inactive Publication Date: 2019-10-10
IES ENG HONG KONG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent text describes a new design of a heat transfer plate for a multi-pass heat exchanger that solves problems of the prior art. The new design allows for more efficient and easier maintenance without the need for arranging connections on a mobile pressure plate. The technical effect of this design is improved performance and better maintenance of the multi-pass heat exchanger.

Problems solved by technology

However, a maximum length of the heat transfer plate is limited to a feasible aspect ratio, because if the heat transfer plate has too high an aspect ratio, the heat exchanger becomes unstable in structure and spatially less optimized for installation; therefore, the height of the heat transfer plate is more frequently limited by the available height for installing the device.
Despite of the many advantages, conventional multi-pass designs have a number of problems and inconveniences in practical applications.
This makes the installation and maintenance cumbersome, time-consuming, and costly.
In additional, the conventional multi-pass design needs a series of flow reversal, compression, expansion, and re-distribution in the port area of each stopper plate, which causes an additional flow pressure drop.
Although there are increasing demands on efficient heat exchangers in industrial applications geared towards environment protection, energy saving, and energy recovery, their wider applications are hindered by the above drawbacks of the conventional multi-pass plate heat exchangers, particularly by the inconveniences in the installation and maintenance process due to the existence of piping and connections on the mobile pressure plate.

Method used

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  • Multi-process detachable heat exchanger and dedicated heat exchange plate thereof
  • Multi-process detachable heat exchanger and dedicated heat exchange plate thereof
  • Multi-process detachable heat exchanger and dedicated heat exchange plate thereof

Examples

Experimental program
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Effect test

first application example

[0060]In the first application example, there are only lateral passes without longitudinal passes. In other words, only lateral-pass heat transfer plates are used, while partition heat transfer plate is not used. Although the number of lateral passes is not limited theoretically according to the principle of the present disclosure, the present application example is more suitable for implementing a multi-pass removable plate heat exchanger with 2, 3, or 4 passes in actual applications due to consideration of unfavorable dimension increase in horizontal direction.[0061]a heat transfer plate with 2, 3 or 4 lateral partitions is molded using a same pressing die;[0062]appropriately shaped sealing gaskets are mounted to each heat transfer plate to form the desired number of lateral partitions;[0063]a plurality of lateral-pass plates configured with corresponding sealing gaskets are assembled together to form a plate pack with alternating cold and hot fluid flow channels;[0064]an integral...

second application example

[0066]In the second application example, not only the lateral passes but also the longitudinal passes are employed; in other words, lateral-pass heat transfer plates and partition heat transfer plates are used in combination. A second application example of the present disclosure is suitable for circumstances requiring a higher number of passes, including 4, 6, 8, 10, . . . 2N (any even number) passes (the number of passes achievable for the entire heat exchanger can be viewed as any number, without being limited to even number only, if each heat transfer plate is used as the reference.). In this application example, there is no structural limitation on the maximum number of passes.[0067]a heat transfer plate with 2 lateral partitions is molded using a same pressing die;[0068]Appropriately shaped sealing gaskets are mounted to each heat transfer plate to form the lateral-partition plate described above. The heat transfer plate of this type is used in all passes other than the two pa...

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Abstract

The disclosure relates to a multi-pass removable plate heat exchanger without a need of arranging interfaces or connections on a mobile pressure plate, and a specific heat transfer plate therefor. The heat transfer plate has a plurality of lateral regions, where a plurality of mutually communicative lateral-pass partitions or mutually isolated pass partitions are formed with specially shaped gaskets. With such kind of heat transfer plates, a multi-pass removable plate heat exchanger without a need of arranging interfaces or nozzles on the mobile pressure plate may be constructed. The disclosure further relates to a specially shaped gasket to allow construction of a multi-pass removable plate heat exchanger without a need of arranging interfaces or nozzles on the mobile pressure plate. The multi-pass removable plate heat exchanger comprises a fixed pressure plate, a mobile pressure plate, and a plate pack where a plurality of the heat transfer plates configured with corresponding gaskets are assembled to form alternating cold and hot fluid flow channels.

Description

FIELD OF THE INVENTION[0001]The present disclosure relates to a removable plate heat exchanger, and more specifically relates to a multi-pass removable plate heat exchanger without a need of installing connections to a mobile pressure plate side, and a dedicated heat transfer plate therefor.BACKGROUND[0002]A plate and frame heat exchanger is generally referred to as a plate heat exchanger (PHE), which was originated from the European food industry over 60 years ago, when there was a demand for a heat exchanger that was efficient, energy-saving, structurally compact, easy to clean, and adaptable to change of design conditions. PHEs could satisfy such initial requirements. Currently, those basic requirements are still present, and the PHEs have been widely used in various industrial fields throughout the world, e.g., refrigerating, heating and ventilation, air-conditioning, and oil cooling. Due to its characteristics such as high heat transfer efficiency, low heat loss, light-weighted...

Claims

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Application Information

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IPC IPC(8): F28D9/00F28F3/04F28F11/02
CPCF28D9/005F28F3/044F28F3/046F28F11/02F28D9/0037F28F3/02F28F9/24F28D9/00F28F3/083F28F3/10F28D9/0056
Inventor HUANG, XINGCUNYU, WAI TAK
Owner IES ENG HONG KONG LTD