Liquid receiver and manufacturing method thereof

Abstract

A liquid receiver comprises a shell with an opening at one end, a filter cap and a drying bag. The filter cap is arranged the open end of the shell, the drying bag is arranged in a cavity formed by the filter cap and the shell, the shell is provided with a first connection port and a second connection port, the filter cap comprises a filter portion and a seal cap portion close to the open end of the shell, the seal cap portion is in seal fit with the inner wall of the shell, the filter portion is of a cylindrical surface structure, the second connection port is communicated with space between the inner wall portion of the shell and the filter portion, the first connection port is communicated with internal space of the filter portion, the filter cap is provided with a matched seal structure close to one end of the drying bag and the inner wall portion of the shell, and refrigerant is filtered via the filter portion in the process of flowing between the first connection port and the second connection port. The liquid receiver further comprises a limiting structure for preventing the drying bag from falling into the filter cap, so that normal filter capacity of the filter cap is guaranteed.

Description

technical field [0001] The invention relates to the technical field of refrigeration systems, in particular to a liquid receiver and a manufacturing method thereof. Background technique [0002] The liquid receiver is a relatively important accessory in the refrigeration system. Its function is to filter impurities in the refrigerant, absorb moisture in the refrigerant and store a certain amount of refrigerant. Therefore, it is widely used in refrigeration systems such as automobile air conditioners. At present, there are many types of liquid reservoirs in automobile air conditioners, among which the application range of upper and lower body liquid reservoirs is relatively wide. [0003] The upper and lower body liquid reservoirs are slender in shape, and are formed by welding after the upper body and the lower body are butted. The inside of the liquid reservoir is equipped with a dry bag, and the dry bag has molecular sieves inside. The lower end of the lower body is prov...

AI Technical Summary

Problems solved by technology

In this way, after the refrigerant enters the liquid receiver from the inlet, it will pass through the first metal filter, the non-woven filter and the second metal filter in sequence. Since the non-woven filter is relatively dense, the filtration accuracy is better, But it also brings the problem of relatively large filtration resistance, that is, the higher the density of the non-woven filter, the greater its flow resistance, which will increase the load on the refrigeration system

At the same time, due to the large flow resistance of the non-woven filter, the impurities in the refrigerant are easy to accumulate on the surface of the non-woven filter, which further weakens the flow capacity of the non-woven filter.

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