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Compressor running control method and control system and refrigeration cycle system

A circulation system and operation control technology, which is applied in pump control, mechanical equipment, machine/engine, etc., can solve the problems of great influence on the stability of the air conditioning system, reduce the influence, reduce the number of oil returns, and improve the lubrication efficiency Effect

Inactive Publication Date: 2014-10-29
GREE ELECTRIC APPLIANCES INC
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  • Abstract
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Problems solved by technology

[0003] The main purpose of the present invention is to provide a compressor operation control method, control system and refrigeration cycle system to solve the problem in the prior art that the oil return of the compressor has a great impact on the stability of the air conditioning system

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  • Compressor running control method and control system and refrigeration cycle system

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Embodiment Construction

[0016] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0017] figure 1 It is a control flow diagram of the compressor operation control method in the first embodiment of the present invention. After the compressor is started in the refrigeration system, the current operating frequency F0 of the compressor is collected in real time, and the current operating frequency F0 is compared with the first preset operating frequency F1 , and calculate the continuous overfrequency operation time T0 when the current operating frequency F0 of the compressor is greater than the first preset operating frequency F1, compare the continuous overfrequency operating time T0 with the first preset operating time T1, and adjust the compressor according to the comparison ...

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Abstract

The invention provides a compressor running control method and control system and a refrigeration cycle system. The compressor running control method comprises the steps of by acquiring the running frequency after a compressor is started, comparing the overclocking running time of the current running frequency exceeding the ideal running frequency with the overclocking ultimate running time and controlling a compressor running state according to a comparing result. By means of the compressor running control method, the control system and the refrigeration cycle system, the problem that the influence on an air conditioning system is large during oil return of the compressor in the prior art is solved. The purpose of ensuring lubrication of the compressor is achieved by controlling the running frequency of each compressor and the running time beyond the ideal running frequency and regulating the lubricating oil discharge amount, the system fluctuation is reduced, and the influence on the stability of the air conditioning system is reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular, to a compressor operation control method, a control system and a refrigeration cycle system. Background technique [0002] When the compressor in the refrigeration system is running, it needs to ensure sufficient lubrication. At present, in the air-conditioning system, especially in the multi-connected system, the oil return control of the air-conditioning pipeline is generally used to control the lubricating oil of the compressor. This control method needs to turn on all indoor units and compressors in the air-conditioning system, which has a relatively large impact on the entire air-conditioning system, which will affect the stability of the air-conditioning system, affect comfort, and increase power consumption. Therefore, a more stable and reliable compressor lubrication control scheme with little impact on the air conditioning system is needed. Contents of the inventio...

Claims

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Application Information

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IPC IPC(8): F04B49/06
Inventor 张仕强
Owner GREE ELECTRIC APPLIANCES INC
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