A kind of operation control method and dehumidifier of semiconductor refrigeration sheet
A work control and refrigeration chip technology, which is applied in refrigeration and liquefaction, refrigerators, refrigeration components, etc., can solve the problems of high power consumption and low work efficiency, and achieve the effect of high work efficiency and reduced power consumption.
Active Publication Date: 2021-08-31
ZHUHAI LIANDIAN TECH CO LTD
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Problems solved by technology
[0004] The invention provides a work control method and a dehumidifier of a semiconductor refrigerating sheet, which solves the problems of low working efficiency and large power consumption existing in the control method of a semiconductor refrigerating sheet
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[0011] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0012] According to the principle of thermodynamic refrigeration and the principle of semiconductor refrigeration, the following formula is obtained:
[0013] P=Q+W, ε=Q / w, wherein, P is the calorific value of the hot end of the semiconductor cooler, Q is the cooling capacity of the cold end of the semiconductor cooler, w is the electric power of the semiconductor cooler, and ε is the cooling efficiency. That is, the calorific value of the hot end of the semiconductor refrigeration sheet is equal to the cooling capacity of the cold end plus the electric power consumed in the cooling process. The level of ε determines the quality of the cooling effect. The working characteristic curve of semiconductor refrigeration chip is as follows: figure 1 shown.
[0014] Semiconductor refrigeration capacity Q, electric power w and refrigera...
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A working control method and a dehumidifier of a semiconductor refrigerating sheet. The method includes the following steps: when the temperature difference between the cold and the hot ends of the semiconductor refrigerating sheet is greater than a predetermined temperature difference, the controller controls the self-adaptive power supply to output the maximum cooling capacity current, so that the semiconductor refrigerating sheet works at the maximum cooling capacity state; When the terminal temperature difference is constant, the controller controls the output current of the adaptive power supply to gradually decrease, so that the semiconductor cooler works in a transitional state; when the output current of the adaptive power supply decreases to a predetermined current value, the controller adjusts the adaptive power supply based on the PID algorithm. The output current makes the semiconductor refrigeration chip work in the state of the highest cooling efficiency. The control mode of the present invention ensures that the semiconducting refrigerating sheet works at the highest cooling efficiency state, and the working efficiency is higher, and at the same time, the electric power consumption can be reduced.
Description
technical field [0001] The invention relates to the technical field of semiconductors, in particular to an operation control method and a dehumidifier of a semiconductor refrigeration chip. Background technique [0002] In order to protect various internal power equipment, the power company uses a miniature dehumidifier to dehumidify the power cabinet in the humid area. The core device in the dehumidifier is a semiconductor cooling chip. However, the working state of the semiconductor refrigeration chip is relatively complicated, and the simple driving circuit is not suitable. [0003] At present, there are several modes used to control semiconductor refrigeration chips, such as PWM duty ratio adjustment mode under fixed voltage, PWM duty ratio adjustment mode under constant current mode, etc., but there are problems such as low working efficiency and large power consumption. Therefore, how to ensure that the peltier cooler works in an optimal state has become a difficult p...
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IPC IPC(8): F25B49/00F25B21/02F24F5/00F24F3/14
CPCF24F3/14F24F5/0042F24F2003/144F25B21/02F25B49/00F25B2321/0212F25B2700/2107
Inventor 方道奎
Owner ZHUHAI LIANDIAN TECH CO LTD