Second plate sheet for multi-stage flow dividing brazing heat exchanger plate sheet set

Abstract

The invention belongs to the technical field of heat exchangers, and particularly relates to a second plate sheet for a multi-stage flow dividing brazing heat exchanger plate sheet set. The second plate sheet comprises a main panel and surrounding baffles, wherein the main panel comprises a flow dividing area, a main heat exchange area and a flow converging area; and 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 flow converging area and used for evenly distributing media flowing into the main heatexchange area from the flow dividing area and media flowing into the flow converging area from the main heat exchange area. The flow dividing area, the main heat exchange area and the flow convergingarea are arranged on the main panel of the heat exchange plate sheet; 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 flow converging area; even distribution of the media is facilitated; and the heat exchange performance and the heat exchange stability of a heat exchanger can be better improved.

Description

technical field [0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a second plate for a brazed heat exchanger plate group with multi-stage split flow. 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...

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Problems solved by technology

[0004] In order to solve the problem of poor medium circulation uniformity in the existing heat exchanger, which leads to the performance degradation or insufficient stability of the heat exchanger, the present invention discloses a second 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 second 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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