Compressor control method and device
A control method and control device technology, applied in refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve problems such as frequent startup of compressors, and achieve the effect of reducing the number of restarts
Active Publication Date: 2019-06-28
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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Problems solved by technology
[0004] The present invention provides a compressor control method and device, the main purpose of which is to solve the technical problem of frequent start-up of the compressor when operating in a heating mode at a higher outdoor temperature and in a cooling mode at a lower outdoor temperature
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[0033] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0034] The invention provides a compressor control method.
[0035] Reference figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the compressor control method of the present invention.
[0036] This embodiment provides a compressor control method, and the compressor control method includes:
[0037] Step S10, after the compressor is shut down for protection, update the number of shutdown protection times of the compressor during the current operation of the air conditioner;
[0038] The shutdown protection described in this embodiment means that the compressor performs shutdown protection when the temperature of the indoor heat exchanger in the heating mode exceeds the preset high temperature protection temperature, or the temperature of the indoor heat exchanger in the cooling mode of the air cond...
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The invention discloses a compressor control method comprising the steps: after carrying out shutdown protection on a compressor, updating the shutdown protection frequency of the compressor in the running process of an air conditioner; and when the shutdown protection frequency of the compressor is larger than a first preset frequency, shortening the duration that the compressor operates according to a starting frequency to ensure that the compressor is switched to a target frequency to operate after starting to operate for the shortened duration according to the preset starting frequency during restarting. The invention also discloses a compressor control device. The duration that the compressor operates according to the starting frequency is shortened to ensure that the compressor is switched to the target frequency to operate after operating at the starting frequency for a relatively short duration, and the starting frequency of the compressor is generally larger than the target frequency of the compressor, so that the compressor relatively slowly reaches a high / low temperature protection value, and the restarting frequency of the compressor is reduced.
Description
Technical field [0001] The invention relates to the technical field of air conditioners, in particular to a compressor control method and device. Background technique [0002] When the air conditioner operates in heating mode at a higher outdoor temperature and cooling mode at a lower outdoor temperature, the indoor heat exchanger (i.e., indoor unit) temperature is too high in heating mode and indoor heat exchange in cooling mode. When the temperature of the compressor (ie indoor unit) is too low, in order to avoid this situation, the compressor is often shut down for protection. [0003] When the compressor is started, it needs to run for more than 1 minute at a preset starting frequency such as 60 or 90Hz. However, according to this starting frequency, when outdoor high temperature heating operation and outdoor low temperature cooling operation are performed, the evaporator temperature will quickly reach high, Low temperature protection value, the system protects once every 5 to...
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IPC IPC(8): F25B49/02
CPCF25B49/022F25B2400/077F25B2600/0251
Inventor 王勇
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD