Novel triple-medium composite heat exchanger

Abstract

A novel triple-medium composite heat exchanger comprises an upper seal head, a lower seal head and a frame. The frame comprises an upper partition plate, a lower partition plate and side plates, a plurality of heat exchange plate bundles are arranged in the frame, a plurality of fins are arranged among the heat exchange plate bundles, each heat exchange plate bundle comprises three parallel plates, a gap is reserved between two adjacent plates, two fluid channels are formed in each heat exchange plate bundle, a first channel port and a second channel port are formed in the upper partition plate, a third channel port and a fourth channel port are formed in the lower partition plate, two non-communicated cavities are formed in the upper seal head and the lower seal head, one cavity of the upper seal head is communicated with one cavity of the lower seal head through the first channel port, the fluid channels and the third channel port, the fluid channels are communicated with the first channel port and the third channel port, the other cavity of the upper seal head is communicated with the other cavity of the lower seal head through the second channel port, the fluid channels and the fourth channel port, and the fluid channels are communicated with the second channel port and the fourth channel port. The heat exchanger can synchronously exchange heat of three media.

Description

technical field [0001] The invention belongs to the technical field of heat exchanger manufacturing, and relates to a general working condition applicable to petroleum, chemical industry, metallurgy, and electric power, especially applicable to the occasion of dual heat source compound heat pump technology in air source heat pump, realizing three kinds of media in the same heat pump A new type of three-medium compound heat exchanger for synchronous heat exchange in the exchanger. Background technique [0002] Building energy consumption is a major item of energy consumption. It is an important way to save energy by converting low-grade heat energy that cannot be directly used into heat pump technology air conditioners that can use high-level energy. Most of the heat exchangers currently used in the field of refrigeration and air conditioning can only realize heat exchange between two media. The patent application "Fin-Tube Type Three-Medium Composite Heat Exchanger" (applic...

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Problems solved by technology

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 that can realize simultaneous heat exchange of air, water and refrigerant Composite heat exchanger, but the processing technology of this heat exchanger is complex and has certain difficulties, and it is difficult to popularize and use it; the patent application "Air-water dual heat source and three-medium composite heat exchanger" (application number 201010593569.5, publication number CN102538307 A, publication date 2012.07.04) disclosed a heat exchanger with simple processing

However, the heat exchange efficiency of these two types of heat exchangers is not high, the lifting space is small, and the installation of fins is also relatively difficult. If the number of heat exchange tubes is increased to increase the heat exchange capacity, the corresponding difficulty in assembly and processing will increase; and the above The synchronous heat exchange of the three media proposed in the two patent applications means that only one medium can exchange heat with the other two media alone, and it is impossible to realize the independent heat exchange of any two of the three media; if the heat is not transferred through the intermediate medium, it is It is impossible to realize the simultaneous heat exchange of the three media

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