Heat exchange tube for evaporator and evaporator formed by same

Abstract

The invention discloses a heat exchange tube for an evaporator and the evaporator formed by the same and aims to provide a heat exchange tube capable of reducing the heat exchange area and lowering the filling quantity of refrigerants and used for an evaporator and the evaporator formed by the same. The heat exchange tube used for the evaporator comprises an outer tube and at least one inner tube, wherein the at least one inner tube is installed inside the outer tube and is provided with a plurality of spurt holes. The heat exchange tube provided by the invention adopts an inner spurt heat exchange way, high-speed flow passing through the spurt holes is sprayed on a heat exchange surface to generate turbulent flow, thereby the heat exchange coefficient of the evaporator is greatly increased, and the heat exchange area of the heat exchange tube is greatly reduced. Meanwhile, the refrigerants only flow inside the inner tube of the heat exchange tube, which greatly reduces the filing quantity of the refrigerants in a refrigerating system and greatly solves the application limit of working mediums of certain refrigerants, in particular combustible and explosive working mediums.

Description

technical field [0001] The invention relates to the technical field of evaporators, more specifically, to a heat exchange tube for an evaporator and an evaporator composed of the same. Background technique [0002] The evaporator is the most important heat exchanger in the refrigeration system. For refrigeration systems, it is a heat exchanger that absorbs heat from outside the system. The function of the evaporator is to use the liquid refrigerant to boil at low pressure, transform into vapor and absorb the heat of the cooled object or medium to achieve the purpose of refrigeration. Therefore, the evaporator is a device for producing and outputting cooling capacity in the refrigeration system. In the vapor compression refrigeration cycle, according to the cooling medium, it can be divided into air-cooled evaporator and water-cooled evaporator, and the water-cooled evaporator can be divided into flooded evaporator and dry evaporator according to the different liquid supply...

AI Technical Summary

Problems solved by technology

However, since adding a circulating pump means more power consumption, the structure is more complicated

[0006] In the traditional form of vapor compression refrigeration cycle, the evaporation process of the refrigerant in the evaporator must be ensured in a low-pressure environment, so the high-pressure refrigerant after compression and condensation needs to go through a throttling and decompression process before entering the evaporator. The system structure complex

[0007] Among the above-mentioned various forms of evaporators, although each has its own characteristics, most of them cannot solve the problem of the charging volume of the refrigeration system.

Especially for flammable and explosive refrigerants, there are strict regulations on the charging amount of refrigerants in practical applications, which greatly limits the application of these refrigerants in some large-scale refrigeration systems

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