Receiver tank for refrigeration cycle, heat exchanger with the receiver tank, and condensation device for refrigeration cycle

Abstract

A receiver tank has a tubular tank body (30) with a refrigerant inlet hole (3a) and a refrigerant outlet hole (3b) that are formed in its lower wall (321). The upper end of the opening of the refrigerant inlet hole (3a) is positioned lower than the upper end of the opening of the refrigerant outlet hole (3b). At the upper end of the opening of the refrigerant inlet hole (3a) is provided a resistance layer (335) at which the speed of flow of a refrigerant is reduced by permeation of the refrigerant. The refrigerant flowing in from the refrigerant inlet hole (3a) permeates upward the resistance layer (335) to form a collection (R) of liquid in a space in the tank. A liquid refrigerant in the collection (R) is discharged through the refrigerant outlet hole (3b). Because of the structure above, the refrigerant can be saved, the structure can be simplified, and costs can be reduced.

Description

technical field [0001] The present invention relates to storage tanks for refrigerating cycles, heat exchangers with storage tanks, and condensing devices for refrigerating cycles, which are suitable for use in automobiles, households, and commercial air-conditioning systems. Background technique [0002] In the refrigeration cycle of the expansion valve system, which is one of the representative systems of the refrigeration cycle, such as Figure 13 As shown, the high-temperature and high-pressure gas refrigerant ejected from the compressor (CP) enters the condenser (CD), exchanges heat with the outside air, and then cools, condenses and liquefies, and mainly flows into the storage tank (RT) in a liquid phase state to carry out After complete gas-liquid separation, only the liquid refrigerant is exported, and after being decompressed and expanded rapidly through the expansion valve, it is introduced into the evaporator (EP) in the form of low-pressure and low-temperature mis...

AI Technical Summary

Problems solved by technology

[0009] However, for a general refrigeration cycle, the flow rate of refrigerant flowing from the side of the condenser (CD) to the storage tank (RT) is high, so in Figure 14A ~ Figure 14C In the interlayer type shown, a large turbulent region of the liquid refrigerant occurs in the upper side space (133) into which the refrigerant flows, and as a result of this, the liquid refrigerant accumulates in the upper side space (133) , so the liquid refrigerant cannot be sufficiently supplied to the lower side space (134); or the tiny remaining liquid in the lower side space (134) is disturbed by the high-speed liquid flow through the desiccant filling layer (132), and gas refrigeration is generated at the same time Due to large-scale liquid level fluctuations, gaseous refrigerant flows out from the refrigerant outlet (137) exposed in the gas phase; or a large number of bubbles are involved in the exported liquid refrigerant, which is related to load fluctuations. The stability of performance deteriorates, the above-mentioned stable range becomes narrow, and it will be difficult to seek refrigerant saving and light weight

[0010] and, in Figure 14A as well as Figure 14B In the shown storage tank, it is necessary to assemble the refrigerant pipes (36) (38) inside the tank, which increases the number of parts, complicates the structure, and increases the cost

[0011] Furthermore, in Figure 14D In the pocket-type storage tank shown, the flow rate of the internal refrigerant will be greater than that of the sandwich-type storage tank, and the turbulent flow will also be greater, so the liquid level of the refrigerant near the refrigerant outlet (137) will also increase. The more unstable, the easier it is for the gaseous refrigerant to flow out, creating the same problems as above

[0012] Additionally, for Figure 15 As shown in the storage tank, the refrigerant pipe (39) must be assembled inside the tank, so it is the same as the above Figure 14A and Figure 14B There are problems such as complication of the structure and increase of the cost, just like the storage tank of the

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