Method and device for starting air cooling condensing unit suitable for low-temperature environment
A low-temperature environment, condensing unit technology, applied in application, heating mode, space heating and ventilation, etc., can solve problems such as shutdown and failure to open normally
Active Publication Date: 2014-04-16
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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Problems solved by technology
[0003] However, during the start-up process of the air-cooled condensing unit, the low-pressure value will drop sharply for a few seconds when the unit is started. When the ambient temperature is low, it is easy to reach the evacuation pressure value, and the compressor will automatically stop for protection, resulting in the compressor just It shuts down when it is turned on, and cannot be opened normally
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[0036] The specific implementation of the start-up and device of the air-cooled condensing unit adapted to the low-temperature environment of the present invention will be described below in conjunction with the accompanying drawings.
[0037] An embodiment of the present invention also provides a method for starting an air-cooled condensing unit adapted to a low-temperature environment. The air-cooled condensing unit includes a compressor, and a pressure sensor is provided on the suction port of the compressor. The starting device of the air-cooled condensing unit adapted to the low temperature environment is realized, such as figure 1 As shown, the starting method includes the following steps:
[0038] Step S10, the control board obtains the start signal of the condensing unit;
[0039] Step S20, triggering the evacuation protection of the shielded control board according to the start signal, and invalidating the evacuation protection of the condensing unit;
[0040] Step ...
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The invention discloses a method and device for starting an air cooling condensing unit suitable for a low-temperature environment. The method comprises the steps that S10, a starting signal of the condensing unit is obtained by a control main board; S20, shielding of evacuation protection of the control main board is triggered according to the starting signal and evacuation protection of the control main board is made ineffective; S30, under the condition that evacuation protection of the control main board is ineffective, a compressor is started. According to the method and device for starting the air cooling condensing unit suitable for the low-temperature environment, the accuracy of judgment that the evacuation protection condition is met is guaranteed, and it is guaranteed that the air cooling condensing unit can be started and operated smoothly under the low-temperature environment.
Description
technical field [0001] The invention relates to the technical field of air-conditioning unit equipment, in particular to a method and device for starting an air-cooled condensing unit suitable for low-temperature environments. Background technique [0002] At present, the air-cooled condensing unit used in the field of refrigeration and refrigeration will close the indoor solenoid valve that supplies liquid to the indoor unit after shutdown, and stop the liquid supply. Because the ambient temperature is very low, the refrigerant vapor in the indoor unit will condense and migrate to the bottom of the compressor. In the lubricating oil, the refrigerant evaporates from the lubricating oil when the machine is turned on again, and a large amount of oil foam will roll over, and the liquid refrigerant will enter the compression chamber to cause liquid shock. The refrigerant of the indoor unit is evacuated. With the operation of evacuation, the pressure of the low-pressure side of t...
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Inventor 安亚洲何海波吴家威
Owner GREE ELECTRIC APPLIANCES INC OF ZHUHAI