Small-sized refrigerating compressor oil level pipe and liquid level device

Abstract

The utility model relates to an oil level pipe and a liquid level pipe device used in small refrigeration compressor units such as cold storage and refrigeration equipment. An oil level pipe (1) and a liquid level pipe (4) are provided. The upper end of the oil level pipe (1) is provided with an upper valve I (2) communicated with the air return pipe (8) of the refrigeration compressor unit (7), and the lower end is provided with an upper valve I (2). There is a lower valve I (3) communicating with the bottom of the oil tank of the refrigeration compressor unit (7); the upper end of the liquid level pipe (4) is provided with an upper valve II communicated with the liquid collection pipe (10) of the condenser (7) of the refrigeration compressor unit (5), the lower end is provided with the lower valve II (6) communicating with the lower part of the refrigeration compressor unit (7) condenser (9) liquid receiver (11). From the oil level pipe (1) and the liquid level pipe (4), the oil level of the refrigeration system, the refrigerant liquid level and the liquid volume changes can be observed. It can conveniently and accurately observe the whole process of the oil level and liquid level of the refrigeration compressor unit (7), correctly judge the amount of oil and liquid, and add oil in time to ensure the safe operation of the compressor; and it has the characteristics of simple structure and convenient use.

Description

1. Technical field: [0001] The invention relates to an oil level pipe for machine oil and a liquid level pipe device for refrigerant used in small refrigerating compressor units such as cold storage and refrigerating equipment. 2. Background technology: [0002] At present, the small-scale refrigeration compressor units in cold storage and refrigeration equipment for refrigeration and fresh-keeping do not have oil level pipes and liquid level pipe devices, so it is impossible to know the oil volume and oil return of the refrigeration system in time, often resulting in low oil in refrigeration compressors. Running under the condition of low oil volume and no oil will cause accidents such as cylinder locking, jamming, overheating of the motor, and even burning of the compressor unit. The liquid volume of a refrigeration system without a liquid level tube is also difficult to quantify correctly. If the liquid volume is too large, it will cause super high temperature and no ref...

AI Technical Summary

Problems solved by technology

[0002] At present, the small-scale refrigeration compressor units in cold storage and refrigeration equipment for refrigeration and fresh-keeping do not have oil level pipes and liquid level pipe devices, so it is impossible to know the oil volume and oil return of the refrigeration system in time, often resulting in low oil in refrigeration compressors. Oil-free operation, resulting in cylinder lock, stuck and overheating of the motor in the compressor unit, resulting in accidents such as burning

The liquid volume of refrigeration system without liquid level tube is also difficult to quantify correctly

If the liquid volume is too large, it will cause ultra-high temperature and no refrigeration; if the liquid volume is insufficient, the equipment will not be refrigerated when idling, and it will be burned in severe cases.

Some medium and large refrigerating units using the oil sight glass often cannot see the oil surface clearly due to the small mirror surface and the mirror surface pollution, and it is difficult to make a correct judgment on whether to refuel

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