Heat exchange plate

Abstract

The invention provides a heat exchange plate used in a plate heat exchanger. At least one flow dividing component is arranged in the heat exchange plate and used for dividing the flowing path of heat exchange fluid flowing through the heat exchange plate into at least two flow dividing flow channels, the flow dividing components are provided with openings so that the flow dividing flow channels in the heat exchange plate can be of a serial structure, and thus an S-shaped flow channel is formed by the heat exchange fluid on the heat exchange plate. By means of the heat exchange plate, the demand for different section areas of cold side fluid and hot side fluid is met, the assembling mode of single-side pipe connection is adopted for the plate heat exchanger formed by assembling plates, much installation and maintenance cost can be saved, meanwhile, the heat exchange efficiency is high, and the purposes of energy conservation and environmental friendliness are achieved.

Description

technical field [0001] The invention belongs to the field of heat exchangers, in particular to a plate heat exchanger, which belongs to the field of F28D heat exchangers. Background technique [0002] In general, the cross-sectional areas of the cold and hot fluid passages on both sides of the plate heat exchanger are equal ( Figure 1a ). In this case, if the flow rate (referring to the volume flow rate) of the two fluids is not much different, the flow channels of the same fluid can be connected in parallel with each other, such as Figure 1a , at this time, the heat transfer coefficient of the fluids on both sides of the plate heat exchanger is not much different, and the heat transfer coefficient of the whole heat exchanger is very high, and this setting can also make the inlet and outlet of the two fluids on the same end plate 5, as shown in Figure 1b As shown, it is conducive to the disassembly and maintenance of the plate heat exchanger and the cleaning of the plates...

AI Technical Summary

Problems solved by technology

However, if two fluids with a large difference in flow rate are used for heat exchange, if the two fluids adopt parallel fluid channels, the flow rate of the smaller flow rate will be too low, resulting in a lower heat transfer coefficient

Therefore, the low-flow fluid channels are usually arranged in series, such as Figure 2a As shown, in this way, all four inlets and outlets of the hot and cold fluids cannot be set on one end plate, but can only be set on two end plates 5, 6, as Figure 2b As shown, the fluid inlet and outlet ports are set on both end plates. When the heat exchanger is connected to the pipeline, it will be difficult to disassemble the plate heat exchanger, and both ends need to be disassembled, resulting in inconvenient maintenance.

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