Compressor and capacity adjusting method, device and equipment of compressor

Abstract

The invention discloses a compressor and a capacity adjusting method, device and equipment of the compressor. The capacity adjusting method of the compressor comprises the steps that 1, the capacity adjusting moment for conducting capacity adjusting control over the compressor is determined based on electric current fluctuation of the compressor; 2, when capacity adjusting control over the compressor is conducted at the capacity adjusting moment, the pressure difference of the high pressure and the low pressure of the compressor is acquired; 3, the pulse loading time corresponding to the pressure difference is determined, and 4, starting and stopping of a capacity adjusting electromagnetic valve are controlled according to the pulse loading time. According to the compressor and the capacity adjusting method, device and equipment of the compressor, the technical problems that abnormal situations and control disorders occur due to too fast loading of the compressor are solved.

Description

technical field [0001] The invention relates to the field of air conditioning control, in particular to a compressor and a capacity adjustment method, device and equipment thereof. Background technique [0002] At present, the conventional stepless adjustment capacity adjustment method of the screw compressor in the prior art is to energize the corresponding loading and unloading solenoid valves in pulse form, wherein, the capacity adjustment range of the loading and unloading solenoid valves is generally (25%- 100%), so that the purpose of capacity adjustment can be achieved. In the conventional stepless adjustment capacity adjustment method, the time of the adjustment pulse is generally independent of the working conditions and current fluctuations. [0003] There may be the following problems in the conventional stepless adjustment mode of the screw compressor in the prior art: (1) under the working condition of high pressure difference and low water temperature, since t...

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Problems solved by technology

[0003] There may be the following problems in the conventional stepless adjustment mode of the screw compressor in the prior art: (1) under the working condition of high pressure difference and low water temperature, since the adjusted pulse is the same as that of the general working condition, with the loading As the pressure difference increases, the screw compressor may cause low pressure protection due to excessive loading and low freezing water temperature; (2) Once the structural design of the capacity regulator inside the screw compressor is unreasonable, it may cause the compressor Abnormal conditions such as low voltage and low protection appear quickly

[0004] For the above-mentioned problems of compressor abnormality and control disorder due to excessive loading, no effective solution has been proposed so far

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