Liquid storage tank with multiple oil return holes

Abstract

The invention discloses a liquid storage tank with multiple oil return holes, comprising a shell the interior of which forms a coolant holding space. In order to make sure that coolant flowing out from the interior of the casing is sucked into a compressor, one side of an efflux pipe is mutually communicated with the compressor, the other side of the efflux pipe is inserted to the interior of the casing, and the inserted part is bent to extend upwards after reaching the bottom of the casing; the bent area of the efflux pipe is provided with an oil return hole in a communicating mode, and the oil return hole can suck oil at the bottom of the casing so as to recover oil to the compressor; and the pipeline part of the efflux pipe, which is bent to extend upwards after reaching the bottom of the casing, is also provided with a plurality of auxiliary oil return holes. According to the invention, in-time oil return can be ensured under various heights of oil level, thereby avoiding the occurrence of incapability of oil return due to over-high oil level under harsh conditions and preventing the phenomenon of insufficient oil of the compressor; and as the interior of the casing does not have residual oil, oil complementary amount can be reduced.

Description

Technical field [0001] The invention relates to a liquid storage tank, especially a liquid storage tank with a plurality of oil return holes. Background technique [0002] Such as figure 1 As shown, the general refrigeration cycle system includes: a compressor 11 that compresses the refrigerant; a condenser 13 that is arranged on the discharge side of the compressor 11 and condenses the compressed refrigerant through a heat release process; and is connected to the condenser along the flow direction of the refrigerant The expansion valve 15 is arranged on the outlet side of the expansion valve 15 and the refrigerant absorbs the surrounding latent heat of evaporation to perform a cooling effect. [0003] Both the condenser 13 and the evaporator 17 are provided with blower fans 14, 18 that promote heat exchange. The suction side of the compressor 11 has a liquid storage tank 21 that separates gas and liquid so that the inside of the compressor 11 sucks gaseous refrigerant. [0004] Su...

AI Technical Summary

Problems solved by technology

[0009] However, in the conventional liquid storage tank with the above-mentioned structure, the oil and the refrigerant are separated significantly at low temperature in winter, and the excess refrigerant is mostly stored at the bottom of the liquid storage tank (due to the light specific gravity of the oil, it floats on the top of the liquid refrigerant) , causing the oil level to be higher than the oil return hole 27, the oil cannot flow back to the compressor in time, causing the compressor to lack oil and cause defective

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