Three-cylinder compressor mode switching method and device
A mode switching, compressor technology, applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve problems such as no solutions, errors, sensor errors, etc.
Active Publication Date: 2020-12-18
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0005] At present, mode switching is generally based on calculating the frequency switching point based on sensor parameters. However, due to parameters such as sensor errors, errors will occur in the actual implementation process, and often fail to achieve good results.
[0006] For how to switch modes accurately and efficiently, no effective solution has been proposed so far
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[0056]In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and drawings. Here, the exemplary embodiments of the present invention and the description thereof are used to explain the present invention, but not as a limitation to the present invention.
[0057]In order to make the multifunctional hot water machine use the three-cylinder variable capacity compressor to respond in time to the existing load changes, and to improve the operating reliability of the load frequency switching point, the mode is switched according to the real-time load demand to realize the energy-saving operation of the unit. In this example, the reverse correction frequency switching point is comprehensively calculated by collecting real-time operating frequency and operating time parameters. Because real-time running frequency and running time can characterize th...
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The invention provides a method and device for switching the modes of a three-cylinder compressor. The method comprises the steps of acquiring the maximum operation frequency and maximum frequency operation time of the three-cylinder compressor when operating in a three-cylinder mode; correcting a frequency switching point according to the maximum operation frequency and maximum frequency operation time; and performing switching between the three-cylinder mode and a dual-cylinder mode of the three-cylinder compressor based on the corrected frequency switching point. According to the scheme, the problem is solved that since an existing three-cylinder compressor cannot accurately switch the dual-cylinder mode and the three-cylinder mode, energy saving and high-load operation cannot be simultaneously achieved. It is guaranteed that the modes of the three-cylinder compressor can be reasonably switched, and thus the technical effects of energy saving and high-load stable operation are simultaneously achieved.
Description
Technical field[0001]The invention relates to the technical field of equipment control, and in particular to a method and device for switching modes of a three-cylinder compressor.Background technique[0002]At present, multifunctional hot water heaters are generally used in cold areas, that is, areas where the temperature is around minus 15°C. Under this working condition, a general two-cylinder compressor can meet the requirements, and its compression ratio of about 2.6 can avoid high load failures under this working condition. However, the two-cylinder compressor can only meet the general heating requirements, and it is difficult to meet the performance and reliability requirements.[0003]Furthermore, if it is under more severe operating conditions, two-cylinder compressors are often difficult to meet the basic needs of users. For example, if the temperature reaches below -15°C, the compression ratio of the compressor will not meet this operating demand, and the compressor will appe...
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IPC IPC(8): F25B49/00
CPCF24H4/02F24H9/2007
Inventor 朱俊威胡乾龙马定超黄承杰曾凡卓袁占彪
Owner GREE ELECTRIC APPLIANCES INC