Double temperature double controller for refrigeratory
A storage temperature and cold storage technology, which is applied in the field of control devices for automatically controlling storage temperature and frost temperature in cold storage, and can solve problems such as cooling capacity decline, energy consumption increase, and heat exchange equipment returning liquid.
Inactive Publication Date: 2009-03-18
SHANDONG INST OF POMOLOGY
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Problems solved by technology
[0002] At present, the temperature control of the cold storage is mostly realized through the operation of the storage temperature control refrigeration device, but this control method is difficult to ensure that the cooling fan in the storage works within the scientific and reasonable evaporation temperature (referred to as "frost temperature"). It is: when the frost temperature of the air cooler is too high, the temperature in the warehouse will drop slowly or not, or even increase the temperature; when the frost temperature is too low, the cooling capacity will drop, and the energy consumption will increase greatly, and the refrigerator will run idling, and the heat exchange equipment will return to liquid. and refrigeration compressor liquid hammer phenomenon
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[0011] The present invention will be further described below in conjunction with accompanying drawing:
[0012] According to the requirements of fresh goods, set the control range of storage temperature. The upper limit frost temperature set by the frost temperature control instrument is 2-5°C lower than the upper limit storage temperature set by the storage temperature control instrument, and the lower limit frost temperature is lower than the lower limit storage temperature. 3-8°C.
[0013] 1. Storage temperature control program Cooling fan switch process (automatic):
[0014] like figure 2 shown, the total power supply DK 1 ON bit, control power supply DK 3 ON position, self-control switch SK 1 ON bit. Storage temperature control instrument TK 1 Set the upper and lower limit range of temperature. When the storage temperature measured by the storage temperature sensor is higher than the upper limit storage temperature, TK 1 When the middle and top are connected, t...
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A double-temperature and double-control device of cold storage is prepared for controlling the cooling fan to be operated on by control circuit of cold storage temperature (CST) when CST is greater than set up-limit temperature and controlling the cooling fan to be stopped off by said circuit when CST is less than set low-limit temperature; controlling refrigerator to be operated on by frost temperature control circuit when frost temperature is greater than set up-limit frost temperature and controlling refrigerator to be stopped of by said circuit when frost temperature is less than set low-limit frost temperature.
Description
technical field [0001] The invention relates to a control device for automatically controlling storage temperature and frost temperature in a cold storage. Background technique [0002] At present, the temperature control of the cold storage is mostly realized through the operation of the storage temperature control refrigeration device, but this control method is difficult to ensure that the cooling fan in the storage works within the scientific and reasonable evaporation temperature (referred to as "frost temperature"). It is: when the frost temperature of the air cooler is too high, the temperature in the warehouse will drop slowly or not, or even increase the temperature; when the frost temperature is too low, the cooling capacity will drop, and the energy consumption will increase greatly, and the refrigerator will run idling, and the heat exchange equipment will return to liquid. And refrigeration compressor liquid hammer phenomenon. Contents of the invention [000...
Claims
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IPC IPC(8): F25D29/00
Inventor 鲁墨森王淑贞杨娟侠鲁宁琳于兰岭刘德奎
Owner SHANDONG INST OF POMOLOGY