Compressor control and protection method, device and system
A technology for control protection and compressors, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as misjudgment and trouble, reduce manufacturing costs, improve accuracy, and timely high-voltage protection. Effect
Active Publication Date: 2022-04-19
SICHUAN HONGMEI INTELLIGENT TECH CO LTD
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Problems solved by technology
[0004] However, if there is a misjudgment between the high-voltage protection switch and the low-voltage protection switch, it will cause unnecessary trouble
For example, if the evaporator or condenser is dirty or the fan is damaged, there will also be a low pressure or high pressure protection failure, but this failure is likely to be a misjudgment
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[0059] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. scope.
[0060] In the compressor refrigeration system, the pipeline is usually connected and sealed by metal pipes, and the interior is filled with refrigerant. The compressor is usually fully enclosed, and the compressor completes the process from suction to exhaust through the operation of the motor. , The flow and control of the refrigerant requires accurate...
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The present invention provides a compressor control and protection method and system, the method comprising: collecting the exhaust temperature of the compressor and the condensation temperature of the condenser; based on the collected exhaust temperature and condensation temperature, determining whether the compressor is There is a high-voltage protection abnormality; if the compressor has a high-voltage protection abnormality, collect the winding temperature of the motor in the compressor within the first preset collection period; determine whether the compressor has a high-voltage protection fault based on the collected winding temperature ; If yes, then control the operating state of the compressor to be set to a shutdown state; if not, then control the operating state of the compressor to be set to a normal state. The solution of the invention can improve the accuracy of judging the high voltage protection fault.
Description
technical field [0001] The invention relates to the technical field of compression refrigeration, in particular to a method and system for controlling and protecting a compressor. Background technique [0002] A compressor refrigeration system usually consists of a compressor, a condenser, a throttling device, an evaporator, a temperature sensor, a high pressure protection switch and a low pressure protection switch. High pressure protection switch and low pressure protection switch are devices used for system pressure protection. The configuration of high and low voltage protection is to increase the reliability of the air conditioning system. Once there is a problem with the high and low voltage protection device, certain protection failure measures will be given. [0003] For example, the patent application number CN201811583848.6 discloses a control and protection method for air conditioners and air conditioners, and specifically discloses a control and protection metho...
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IPC IPC(8): F24F11/38F24F11/64F24F11/61F24F11/70
CPCF24F11/38F24F11/64F24F11/61F24F11/70
Inventor 高向军李昱兵陈峰峰操四胜张明勇
Owner SICHUAN HONGMEI INTELLIGENT TECH CO LTD