Hexagonal detachable welded heat exchanger

Abstract

The invention discloses a hexagonal detachable welded heat exchanger. The heat exchanger comprises a heat exchange core body, a compression plate, and a fluid side inlet and outlet connecting pipe. The heat exchanger comprises a hexagonal cylinder formed by sequentially laminating hexagonal heat transfer plates at intervals as the heat exchange core body. The peripheral edges of the adjacent heattransfer plates are in airtight connection and a cavity is reserved in the middle of the adjacent heat transfer plates as a fluid channel. 3n layers of parallel fluid channels are formed from bottom to top in total; three groups of relatively parallel sidewall surfaces of the hexagonal cylinder are provided with fluid inlets and outlets communicated with the fluid channels of medium layers A, B orC respectively; and a groove is formed in the middle of a rectangular plate surface to communicate with the fluid inlets or outlets on the sidewall surfaces. According to the hexagonal detachable welded heat exchanger, synchronous heat exchange of three media can be realized; and structures of the three medium fluid channels are similar, the application range is wide, multipass flow heat exchangecan be realized; arrangement of positions of pipe mouths is flexible, a plate bundle is in a welding form, a high pressure working condition can be withstood; an external plate frame is in a removable form, and maintenance and cleaning are convenient.

Description

Technical field [0001] The present invention relates to the field of heat exchanger manufacturing, and is suitable for the general working conditions of petroleum, chemical industry, metallurgy, and electric power, and is especially suitable for the working conditions of multi-medium composite heat exchange, such as heat pump technology, fuel cell applications and other occasions. The heat exchanger in which a kind of medium performs simultaneous heat exchange in the same heat exchanger has good pressure bearing performance of the plate bundle, and the plate frame can be quickly disassembled, which is convenient for cleaning and maintenance of the plate bundle. Background technique [0002] The patent application "Fin-tube type three-medium composite heat exchanger" (application number 200710054879.8, publication number CN101105373A, publication date 2008.1.16) discloses a method that can realize the simultaneous heat exchange of air, water and refrigerant Compound heat exchanger...

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Problems solved by technology

[0002] The patent application "Fin-Tube Type Three-Medium Composite Heat Exchanger" (application number 200710054879.8, publication number CN101105373A, publication date 2008.1.16) discloses a heat exchanger capable of simultaneously exchanging heat between air, water and refrigerant. Composite heat exchanger, the processing technology of this heat exchanger is complex and has certain difficulties, and it is difficult to popularize and use; patent application "Air-water dual heat source and three medium composite heat exchanger" (application number 201010593569.5, publication number CN102538307A, publication date 2012.07. 04) A three-medium heat exchanger with relatively simple processing is disclosed. In the three media synchronous heat exchange proposed by the above two inventions, only one medium can exchange heat with the other two media alone, and it is impossible to realize any of the three media. The two media exchange heat separately; the patent application "A Three-Medium Composite Heat Exchanger" (application number CN201510248025.8, publication number CN104896978B, publication date 2016.10.05) discloses a three-medium synchronous heat exchanger, However, one of the heat exchange media in this heat exchanger can only be gas, which has great limitations.

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