Variable refrigerant volume system, anti-liquid-impact control method and device and readable storage medium
A multi-connection system and control method technology, applied in pump control, refrigerator, refrigeration components, etc., can solve problems such as compressor damage, cylinder damage, and liquid slamming
Active Publication Date: 2019-12-10
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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[0002] In the air conditioning system, when the compressor is running with liquid, a large amount of liquid refrigerant enters the compression chamber, because the compressor cannot compress the liquid, and it will cause liquid shock, which will cause damage to the cylinder; in addition, the lubricating oil in the cylinder will dissolve in the The liquid refrigerant is taken out of the compressor, causing the compressor to be unable to lubricate due to lack of oil, and it is extremely easy to cause damage to the compressor during long-term operation
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[0037] The present invention compares the exhaust superheat of each compressor with the preset exhaust superheat, and adjusts the operating frequency of each outdoor compressor according to different comparison results, so as to reduce the risk of compressor liquid shock and improve the performance of the compressor. Performance and reliability, to ensure that the superheat of the compressor exhaust of each outdoor unit remains normal, thereby preventing the occurrence of compressor liquid hammer.
[0038] In order to better understand the above-mentioned technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for m...
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The invention discloses a variable refrigerant volume system, an anti-liquid-impact control method and device and a readable storage medium. The method comprises the following steps that when multipleoutdoor machines in the variable refrigerant volume system work at the same time, exhaust superheat degrees of compressors of the multiple working outdoor machines is acquired; when the exhaust superheat degrees of the compressors of the outdoor machines are smaller than a first preset exhaust superheat degree, the exhaust superheat degree of the compressor of each outdoor machine is compared with a second preset exhaust superheat degree; if the exhaust superheat degree of the compressor of each outdoor machine is smaller than or equal to the second preset exhaust superheat degree, frequencyrising control is carried out on the working outdoor machines; and if the exhaust superheat degree of the compressor of each outdoor machine is not completely smaller than the second preset exhaust superheat degree, frequency reduction or current frequency maintaining control is carried out on the outdoor machines with the compressor exhaust superheat degree less than the second preset exhaust superheat degree, and the frequency rising control is carried out on the outdoor machines with the compressor exhaust superheat degree larger than the second preset exhaust superheat degree. According tothe method, the risk of liquid impact of the compressor is reduced.
Description
technical field [0001] The invention relates to the technical field of air conditioning, and in particular to a multi-connection system, a liquid shock prevention control method, a device and a readable storage medium. Background technique [0002] In the air conditioning system, when the compressor is running with liquid, a large amount of liquid refrigerant enters the compression chamber, because the compressor cannot compress the liquid, and it will cause liquid shock, which will cause damage to the cylinder; in addition, the lubricating oil in the cylinder will dissolve in the The liquid refrigerant is taken out of the compressor, causing the compressor to be unable to lubricate due to lack of oil, and it is extremely easy to cause damage to the compressor during long-term operation. Contents of the invention [0003] The main purpose of the present invention is to propose a multi-line system, anti-liquid shock control method, device and readable storage medium, aiming...
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IPC IPC(8): F25B49/02F25B41/00F04B49/06F25B41/20F25B41/34
CPCF25B49/022F25B41/00F04B49/065
Inventor 郑春元王命仁
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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