Oil level detecting device for compressor

Abstract

Disclosed is an oil level detecting device for a compressor. The oil level detecting device comprises a shell (1), a bottom cover (2), a top cover (3), a oil pool (4) storing compressor lubricant oil, a first connecting pipe (5), a second connecting pipe (6), a connecting terminal (7), a power source device (8), a tank body (9), a floating element (10), a conductive partition plate (11) and a cavity (12) excluding oil pool inside the compressor. One end of the tank body (9) is communicated with the compressor oil pool (4), and the other end of the tank body is communicated with the compressor cavity (12). The floating element (10) can float above compressor refrigerant oil. When the oil level change in the tank body (9) is over a setting value, displacement of the floating element (10) drives the conductive partition plate (11) to be contacted with or separated from the connecting terminal (7). Under the condition that the power source device (8) is powered on, a continuous electric signal is outputted when the conductive partition plate (11) is contacted with the conductive connector (7), and the electric signal is cut when the conductive partition plate (11) is separated from the connecting terminal (7). The oil level in the compressor can be judged by means of electric signal detection.

Description

technical field [0001] The patent of the present invention relates to an oil level detection device for a compressor. Background technique [0002] As the core component of the air conditioning system, the compressor's reliability is particularly important to the reliability of the entire system. With the development of economy and technology, in addition to being used in the traditional refrigeration and air-conditioning industry, compressors are also more and more widely used in low-temperature refrigeration, multi-connected units and frequency conversion and other fields. However, in these application fields, when the compressor is running, how to ensure a normal oil level in the internal oil pool of the compressor is often a big challenge. Low-temperature refrigeration applications often have poor low-temperature fluidity of oil and difficulty in oil return at low refrigerant flow rates; multi-unit applications also have difficulties in balancing the oil circuits of eac...

AI Technical Summary

Problems solved by technology

However, how to detect the oil level of the lubricating oil inside the compressor is not an easy task in the prior art

This has also led to the fact that most of the compressors in the existing compressor products are not able to install relevant oil level detection and alarm devices

[0003] Some existing liquid level sensors, such as photoelectric, piezoelectric, ultrasonic, etc., are often difficult to apply and install in hermetic compressors to accurately detect the oil level in the compressor due to the complex operating conditions and range of the compressor At the same time, the high cost also hinders the extensive use of oil level detection devices in compressors

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