Multi-stage flow-dividing first sheet for brazing heat exchanger sheet group

Abstract

The invention belongs to the technical field of heat exchangers, and particularly relates to a multi-stage flow-dividing first sheet for a brazing heat exchanger sheet group. The first sheet comprisesa main face plate and a baffle around the main face plate. The main face plate comprises a flow-dividing area, a main heat exchange area and a convergence area. Flow-dividing ribs are arranged between the flow-dividing area and the main heat exchange area and between the main heat exchange area and the convergence area and used for evenly distributing a medium flowing into the main heat exchangearea from the flow-dividing area and a medium flowing into the convergence area from the main heat exchange area. The flow-dividing area, the main heat exchange area and the convergence area are arranged on the main face plate of the heat exchange sheet, and the flow-dividing ribs are arranged between the flow-dividing area and the main heat exchange area and between the main heat exchange area and the convergence area, so the even distribution of the mediums is facilitated, and the heat exchange performance and heat exchange stability of a heat exchanger are easily improved.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a first plate for a multi-stage shunted brazed heat exchanger plate group. Background technique [0002] The brazed plate heat exchanger is a high-efficiency heat exchanger made by stacking a series of metal sheets with a certain corrugated shape and brazing. Channels are formed between the various plates, and heat exchange is performed through the plates. Compared with conventional shell-and-tube heat exchangers, its heat transfer coefficient is much higher under the same flow resistance and pump power consumption, and it tends to replace shell-and-tube heat exchangers within the applicable range. [0003] At present, in the design process of brazed plate heat exchangers on the market, most of them consider the circulation at both ends of the heat exchanger instead of the circulation performance of the medium near the middle of the plate. The medium circulat...

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Problems solved by technology

[0004] In order to solve the problem of poor medium circulation uniformity in existing heat exchangers, which leads to a decrease in performance or insufficient stability of the heat exchanger, the present invention discloses a first plate for a multi-stage shunted brazed heat exchanger plate group. By setting the diversion area, the main heat exchange area and the confluence area on the main panel of the first plate, and setting the diversion ribs between the diversion area and the main heat exchange area and between the main heat exchange area and the confluence area, it is beneficial to the flow of the medium Uniform distribution is beneficial to improve the heat transfer performance and heat transfer stability of the heat exchanger

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