Temperature control method for air-cooled refrigerator

A temperature control method and technology for air-cooled refrigerators, which are applied in household refrigerators, coolers, household refrigeration devices, etc., can solve the problems of large instantaneous temperature fluctuation range of air-cooled refrigerators, improve the preservation effect, reduce the fluctuation range, guarantee The effect of stability

Active Publication Date: 2020-05-15
江苏元隆电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a temperature control method for an air-cooled refrigerat

Method used

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  • Temperature control method for air-cooled refrigerator
  • Temperature control method for air-cooled refrigerator
  • Temperature control method for air-cooled refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Take an American-style air-cooled refrigerator as an example, the ambient temperature is 25°C, the room to be adjusted is a variable room, and the set temperature of the variable room is 0°C, and the adjustment amount △ti is 3s.

[0058] By changing the set temperature of the room at 0°C and the detection accuracy of the temperature sensor T i is 1°C, then the shutdown temperature T of the greenhouse is obtained off -1°C, start-up temperature T on is 1°C, and the variable greenhouse damper is in periodic operation, the opening time t of the variable greenhouse damper in the switching cycle can be known from Table 1 on 1 is 60s, closing time t off 1 is 540s;

[0059] Depend on T available mid = 0°C.

[0060] Then open the air door of the variable greenhouse to continue cooling the variable greenhouse;

[0061] Detect the real-time temperature T of the variable room a , when T a When =-1°C, close the damper of the variable temperature room and stop cooling the v...

Embodiment 2

[0069] Take an American-style air-cooled refrigerator as an example, the ambient temperature is 12°C, the room to be adjusted is the freezer, and the set temperature of the freezer is -18°C, and the adjustment amount △ti is 5s.

[0070] According to the set temperature of the freezer at -18°C and the detection accuracy Ti of the temperature sensor as 1°C, it can be concluded that the shutdown temperature of the freezer is -19°C, the start-up temperature is -17°C, and the damper of the freezer operates periodically , the opening time t of the freezer damper in the switching cycle can be known from Table 1 on 1 is 60s, closing time t off 1 for 720s.

[0071] Depend on T available mid = -18°C.

[0072] Then open the air door of the freezer to continuously cool the freezer;

[0073] Detect the real-time temperature T of the freezer a , when T a =-19°C, close the damper of the freezer and stop cooling the freezer.

[0074] Detect the real-time temperature T of the freezer ...

Embodiment 3

[0078] Taking an American air-cooled refrigerator as an example, the ambient temperature is 34°C, the room to be adjusted is a refrigerator, and the set temperature of the refrigerator is 5°C, and the adjustment amount △ti is 2s.

[0079] According to the set temperature of the refrigerating room at 5°C and the detection accuracy Ti of the temperature sensor as 1°C, it can be concluded that the shutdown temperature of the refrigerating room is 4°C and the starting temperature is 6°C. Table 1 shows the opening time t of the damper in the refrigerator compartment in the switching cycle on 1 is 60s, closing time t off 1 for 360s.

[0080] Depend on T available mid = 5°C.

[0081] Then open the door of the refrigerating room to continuously cool the refrigerating room;

[0082] Detect the real-time temperature T of the refrigerator a , when T a =4°C, close the air door of the refrigerating room and stop cooling the refrigerating room.

[0083] Detect the real-time temperatu...

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PUM

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Abstract

The invention relates to a temperature control method for an air-cooled refrigerator. The temperature control method comprises the following specific steps that a shutdown temperature T<off> and a startup temperature T<on> of a compartment needing adjusting are determined, and a opening and closing period for periodical operation of a compartment air door is set, wherein opening time of the air door is t<on>1, and closing time of the air door is t<off>1; the air door is opened for continuous refrigeration on the compartment; a real-time temperature T of the compartment is detected; 4, the air door is closed, refrigeration on the compartment is stopped, and a real-time temperature T of the compartment is detected; the air door is opened and closed according to the opening and closingperiod, wherein the opening time t<on> equals t<on>1, and the closing time t<off> equals t<off>1; the air door is periodically operated, and a real-time temperature T<c> of the compartment is detected, and if the T<c> is smaller than or equal to the T<off>, then the t<on>1 equals t<on> minus Delta ti, the t<off>1 equals t<off>1, the step 4 is re-executed, and if the T<c> is larger than the T<off>,a step 8 is executed; if the T<c> is larger than or equal to T<on>, the t<on>1 equals t<on> plus the Delta ti, the t<off>1 equals the t<off>, the step 2 is re-executed, and if the T<c> is smaller than the T<on>, the step 6 is re-executed. According to the method, by adjusting opening and closing frequency of the air door, a fluctuation range of an instantaneous temperature of the compartment is reduced, and the stability of a temperature in the air-cooled refrigerator is ensured.

Description

technical field [0001] The invention belongs to the technical field of temperature adjustment of air-cooled refrigerators, and in particular relates to a temperature control method of air-cooled refrigerators. Background technique [0002] With the continuous development of the social economy and the improvement of people's living standards, people's requirements for air-cooled refrigerators are also getting higher and higher, and the requirements for the accuracy of temperature regulation of air-cooled refrigerators are also getting higher and higher. At present, the control method commonly used in air-cooled refrigerators can make the average temperature of the compartments reach the set temperature, but in fact, the range of instantaneous temperature fluctuations is relatively large, and the effect on food storage and preservation is not good. Contents of the invention [0003] The object of the present invention is to provide a temperature control method for an air-coo...

Claims

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Application Information

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IPC IPC(8): F25D11/02F25D17/04F25D29/00
CPCF25D11/02F25D17/045F25D29/003F25D29/005
Inventor 任立人
Owner 江苏元隆电器有限公司
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