Energy-saving refrigeration control system and method thereof
A technology of refrigeration control and cooling capacity, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., to achieve good working conditions, stable storage temperature and effective work
Inactive Publication Date: 2010-12-29
上海爱控自动化设备有限公司
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Problems solved by technology
[0007] In view of the above defects, the purpose of the present invention is to propose an energy-saving refrigeration control method to solve the problem of excessive energy consumption of traditional refrigeration systems
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[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] See figure 1 , which is a structural diagram of an energy-saving refrigeration control system of the present invention. The system includes a condenser 101, a liquid storage tank 102, an electronic expansion valve 103, a cooling fan 104, a compressor 105, a frequency converter 106, a controller 107, a first temperature sensor 108, a second temperature sensor 110 and a pressure sensor 109, wherein The condenser 101, the liquid storage tank 102, the electronic expansion valve 103, the air cooler 104 and the compressor 105 are connected end to end in sequence to form a ring refrigeration system. The frequency converter 106 is connected to the air cooler 104 , and the controller 107 is respectively connected to the electronic expansion valve 103 , the frequency converter 106 , the first temperature sensor 108 , the second temperature sensor 110 and the pressure ...
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The invention discloses an energy-saving refrigeration control method, which combines an electronic expansion valve and an inverter to control the refrigerating capacity of an air cooler to make a refrigeration system achieve the best effect. The method comprises the following steps: acquiring a storehouse temperature of the current refrigeration system by a temperature sensor, setting a set value of the storehouse temperature of the refrigeration system to T, wherein the allowable temperature difference is Delta t, and correspondingly adjusting the electronic expansion valve and the inverterof the air cooler respectively according to three conditions that the storehouse temperature is higher than the upper limit (T plus Delta t) of the allowable range, the storehouse temperature is within the allowable range (between T minus Delta t and T plus Delta t), and the storehouse temperature is lower than the lower limit (T minus Delta t) of the allowable range. Therefore, the storehouse temperature of the refrigeration system is steadier, the working situations of a compressor and a condenser are better, and the electric motor of the air cooler works more effectively, thereby achievingbeneficial effect that the whole refrigeration system is more energy-saving.
Description
technical field [0001] The invention relates to the refrigeration field, in particular to an energy-saving refrigeration control method. Background technique [0002] Refrigeration systems are now widely used in various fields, such as cold storage, refrigerators, etc. The existing refrigeration systems mainly include condensers, liquid storage tanks, electronic expansion valves, air coolers and compressors, etc., but the existing refrigeration systems are in There are many defects in actual use, which are discussed as follows: [0003] Assume that a cold storage system is configured with a maximum cooling capacity of 40kw, a rated fan power of 2kw, a maximum air flow rate of 23 cubic meters per hour, a maximum cooling capacity of the electronic expansion valve of 50kw, and a target superheat of 5K. In the actual operation of the system, as the working conditions and the system reach the set temperature, the cooling capacity required by the system will gradually decrease. ...
Claims
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IPC IPC(8): F25B49/02F25D29/00
Inventor 侯大伟胡献曹琪何巍王勇李宝成
Owner 上海爱控自动化设备有限公司