Plate type heat exchanger and plate type laminated sheet thereof

Abstract

The invention discloses a plate type heat exchanger and a plate type laminated sheet of the plate type heat exchanger. The laminated sheet is provided with a p1 and a p2 are an inlet and an outlet holes, a p3 and a p4 are two isolation angle holes, adjacent laminations are oppositely arranged, and every pair of adjacent laminations is subjected to staggered heat exchange. If the n plate S1 and then +1 plate S2 flow refrigerant in a flowing region, the n-1 plateS1 and the n plate S2 region and the n+1 plate S1 region and the n+2 plate S2 region flow refrigerating fluid, and vice versa. Wherein, n is greater than or equal to 2, and n is an integer. Optimization lamination structure parameters are designed through design, so that the heat exchange performance is improved from the inlet pipeP1 to the outlet pipe P2, meanwhile, the flow path is shorter, therefore the flow resistance is reduced, so that the flow rate is increased, the heat exchange efficiency is further improved, and the power consumption of the water pump in the cooling sub-system can be reduced.

Description

technical field [0001] The invention relates to the technical field of plate heat exchangers, in particular to a plate laminate of a plate heat exchanger. Including chiller and water board for these two typical products. Background technique [0002] Plate heat exchanger is a commonly used heat exchanger, which can be used for refrigerant-refrigerant heat exchange and water-water heat exchange. Compared with tube-and-tube heat exchangers and shell-and-tube heat exchangers with the same function, plate heat exchangers have higher heat exchange efficiency, so the heat exchangers are more compact and lighter, and are widely used in new energy vehicles It can also be used in the chemical industry by using air conditioners and cooling subsystems of batteries and motors. The basic principle of a plate heat exchanger is to form spaced flow passages between multiple heat exchange plates, and two heat exchange media (refrigerant-freezing liquid, water-water heat exchange) pass thro...

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Problems solved by technology

[0003] However, the plate laminations of the plate heat exchangers in the above-mentioned prior art have the following defects: due to the unreasonable external dimensions of the plate laminations (including length, width, plate thickness, etc.), the unreasonable structural parameters of the V-shaped grooves (including the included angle , center distance, groove width, groove depth, distance from the edge, etc.), resulting in uneven flow of refrigerant or refrigerant, thereby reducing heat transfer efficiency

In addition, due to the unreasonable design of the welding plane of the V-shaped groove and the lack of a slot welding structure, the compressive strength of the plate heat exchanger is reduced

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