Heat exchange plate and plate heat exchanger
A technology of heat exchange plates and refrigerants, applied in heat exchanger tubes, heat exchange equipment, refrigeration and liquefaction, etc., can solve the problems of increased processing costs, achieve uniform refrigerant pressure, simple processing and assembly, and reduce heat transfer temperature differences Effect
Inactive Publication Date: 2018-12-07
湖北捷玛换热设备制造有限公司
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Problems solved by technology
This technical solution also requires high-precision assembly, and because it is individually adapted to process the heat exchange plate, its processing cost also increases accordingly
Method used
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[0018] Such as figure 1 and figure 2 As shown, in the heat exchange plate of the present invention, the refrigerant inlet port 1 is elliptical, and a diameter concentric with the port is provided at the edge of the port 1 and is not larger than the major diameter of the elliptical port. The arc-shaped concave portion 2; the arc-shaped concave portion 2 transitions to the first sealing area 4 around the refrigerant inlet orifice through the inclined annulus 3; the edge of the orifice 1 does not exceed the boundary 5 of the first sealing area 4. When the above two heat exchange plates are pressed together, the arc-shaped concave portion 2 is close together, and the orifice 1 forms a waist-shaped gap 6 on both sides of the arc-shaped concave portion 2 . When multiple groups of heat exchange plates are assembled together, these waist-shaped gaps 3 form distribution channel openings .7 arranged along the refrigerant inlet channels.
[0019] Such as figure 2 As shown, the plate...
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The invention provides a heat exchange plate applied to a refrigerating system evaporator and a plate heat exchanger assembled by heat exchange plates. The heat exchange plate comprises a refrigerantinlet orifice, the orifice is an oval orifice, and an arc-shaped concave surface portion is arranged at the edge of the orifice; the arc-shaped concave surface portion transits to a first sealing zoneat the periphery of the refrigerant inlet orifice through an inclined annular surface; and the edge of the refrigerant inlet orifice does not exceed the boundary of the first sealing zone. When the two heat exchange plates are closely adjacent to each other, the arc-shaped concave surface portions at the edges of the refrigerant inlet orifices are closely adjacent to each other, and a gap is formed in the portion, on at least one side of the corresponding arc-shaped concave surface, of each oval orifice. When multiple groups of the heat exchange plates are assembled together, the kidney-shaped gaps form distribution channel ports arranged along a refrigerant inlet channel. According to the heat exchange plate, distribution channels are formed only through cooperation of the oval refrigerant inlet orifices and the arc-shaped concave surface portions, and therefore machining and assembling are easy. According to the plate heat exchanger assembled by the heat exchange plates, uniform distribution of a refrigerant in evaporation flow channels can be basically achieved, and the stable evaporation efficiency and normal use of the equipment are guaranteed.
Description
technical field [0001] The invention relates to a heat exchange plate, in particular to a heat exchange plate used in an evaporator of a refrigeration system. [0002] The invention also relates to a plate heat exchanger, in particular to a plate heat exchanger used as an evaporator in a refrigeration system. Background technique [0003] Plate heat exchangers are often used as evaporators for circulating refrigerants in refrigeration systems. During the use of this plate heat exchanger used as an evaporator, it often encounters the problem that the refrigerant cannot be evenly distributed to the evaporation channels between the heat exchange plates after entering the heat exchanger into the inlet channel, which leads to Some parts of the heat exchanger cannot be effectively utilized, and at the same time, some parts of the heat exchanger will be deformed due to uneven distribution of refrigerant. For example, when the plate heat exchanger is composed of more heat exchange...
Claims
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IPC IPC(8): F25B39/02F28F3/08F28F3/10
CPCF25B39/022F25B39/028F28F3/08F28F3/10F28F2210/10
Inventor 丁卫国聂响沈继贵
Owner 湖北捷玛换热设备制造有限公司