Heat exchanger with net type lung-shaped heat exchange plates

Abstract

The invention discloses a heat exchanger with net type lung-shaped heat exchange plates. The heat exchanger with the net type lung-shaped heat exchange plates comprises net type heat exchanger plates, a heat exchanger shell, a liquid inlet tube and a liquid outlet tube, wherein the net type heat exchanger plates are distributed in the heat exchanger shell from top to bottom at equal intervals to form a lung-shaped hollow structure; the liquid inlet tube and the liquid outlet tube are respectively arranged on the heat exchanger shell in the longitudinal direction; and according to each net type heat exchanger plate, two plate bodies with through holes are superposed vertically, the peripheries of the plate bodies and side seams of the through holes are welded together in an argon arc welding or laser welding mode, and a fluid channel in each plate is formed. By the heat exchanger with the net type lung-shaped heat exchange plates, fluid flowing resistance of the outside of each plate is reduced, meanwhile, large Reynolds number can be obtained at low speed, turbulent flow is formed, heat exchange coefficient is increased effectively, therefore, the heat exchanger is simple, efficient and energy-saving, and is compact in structure, occupied space and initial investment are saved, the resistance of the product is lower than that of a traditional plate type heat exchanger, and the heat exchange coefficient can be high.

Description

Technical field [0001] The invention relates to a plate heat exchanger in the field of heat exchangers, in particular to a heat exchanger with a net-type lung-shaped heat exchange plate. Background technique [0002] Generally, the heat exchanger plates are of plate type, and two fluids of different temperatures flow inside and outside the plate to exchange heat with each other. Therefore, the fluid outside the plate flows according to a certain rule along the layout direction of the plate. For some density and specific heat, The flow rate outside the plate has to be reduced due to the restriction of resistance during the design of the heat exchanger, which makes the heat exchange efficiency low. Summary of the invention [0003] The purpose of the present invention is to provide a method that not only reduces the flow resistance of the fluid outside the plate, but also can obtain a larger Reynolds number at a lower speed to form turbulent flow, effectively improve the heat transf...

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Problems solved by technology

[0002] Generally, the plates of the heat exchanger are plate-type, and two fluids of different temperatures flow inside and outside the plate to exchange heat with each other. Therefore, the fluid outside the plate flows along the layout direction of the plates according to certain rules. For some density and specific heat The fluid, such as air, makes it necessary to reduce the flow rate outside the plate due to the limitation of resistance in the design of the heat exchanger, thus making the heat exchange efficiency low

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