Plate heat exchanger

Abstract

The application discloses a plate heat exchanger, which includes at least one finned plate and several plates; the finned plate is located between two adjacent plates; the finned plate includes a base and several finned plates arranged along the first direction Fin units; each fin unit includes a plurality of first fins and a plurality of second fins; each fin includes a top and two side portions; at least one set of side portions located on the top side of the first fin and the side portion located on the top side of the second fin are misaligned along the second direction, so that in the group of side portions respectively belonging to adjacent first fins and second fins, a Window; at least one of the plates is provided with several corrugated protrusions, a groove is formed between two adjacent corrugated protrusions, and the opening of the groove faces the side where the finned plate is located; the top of the corrugated protrusions is at least partly The area is in contact with the finned plate and the window communicates with the groove. The plate heat exchanger of the present application is beneficial to reduce the flow pressure drop while improving the heat exchange performance.

Description

technical field [0001] The present application relates to the technical field of heat exchange, and in particular, to a plate heat exchanger. Background technique [0002] The plate heat exchanger in the related art includes structures such as plates and fins. Fins are usually located between two adjacent plates, and fins are arranged in the flow channel formed by the plates, or focus on low flow resistance, or focus on good heat exchange performance, usually in two types of low flow resistance and good heat exchange. Make a balance or take between the technical effects. [0003] like Figure 22 As shown in the figure, some technologies adopt the fin structure to disturb and block the fluid in the direction of fluid flow, so as to obtain a better heat exchange effect, but at the same time, it also increases the resistance of the fluid flowing through the flow channel. Correspondingly, it is necessary to Pay more pump work. In some other technologies, in order to reduce th...

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Problems solved by technology

[0003] like Figure 22 As shown, some technologies adopt a fin structure to disturb and block the fluid in the direction of fluid flow, so as to obtain a better heat exchange effect, but at the same time, it also increases the resistance of the fluid flowing through the flow channel. Correspondingly, it is required pay more pump power

There are also some technologies that adopt a wavy curved fin structure in order to reduce the flow resistance, and extend the troughs of the wavy fins along the direction of fluid flow, so that the fluid can easily flow through the wavy fins formed by the troughs channel, the fluid flow resistance is small, but the heat transfer effect is not good

[0004] Therefore, the relevant plate heat exchanger technology is to balance the two technical indicators of heat transfer performance and fluid pressure drop. For application scenarios with relatively high requirements for heat transfer performance and fluid pressure drop, the number of flow channels has to be considered The increase of the fin size, the expansion of the plate size, etc., not only increases the cost, but also is not conducive to the weight and volume of the heat exchanger product, so the related technology still needs to be improved

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