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Intelligent control method of variable-frequency refrigerator

A technology of intelligent control and frequency conversion refrigerators, which is applied in the direction of household refrigerators, household refrigeration devices, coolers, etc., can solve the problems of slow cooling speed and achieve the effects of rapid cooling, quality assurance, and reduced temperature fluctuation time

Inactive 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

[0004] The purpose of the present invention is to provide an intelligent control method for an inverter refrigerator to solve the problem of slow cooling speed after the refrigerator door is opened and closed

Method used

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  • Intelligent control method of variable-frequency refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] see figure 1 , taking the air-cooled refrigerator using the VTB113Y inverter compressor produced by Gacibela as an example, the room with the door open is a cold room, and the volume of the cold room is 300L, that is, 0.3m3. The specific steps of the intelligent control method are as follows:

[0055] Step 1: Set the cooling time t of the refrigerator to 60s, and detect the temperature T of the refrigerator compartment when the refrigerator is running normally 1 At 4°C, the compressor speed R old 2700r / min;

[0056] Step 2: Open the door of the refrigerating room, then close the door, and detect the temperature T of the refrigerating room after 10 seconds 2 is 8°C.

[0057] Step 3: Calculate the load increase ΔQ caused by opening the refrigerator door;

[0058] First, calculate the air mass m of the refrigerator according to the volume of the refrigerator:

[0059] m=ρV=1.293kg / m 3 ×0.3m 3 =0.387kg (2)

[0060] In formula (2), the value of standard air density ρ...

Embodiment 2

[0089] see figure 1 , taking the air-cooled refrigerator using the VNX1116Y inverter compressor produced by Gaxibera as an example, the room with the door open is a freezer, and the volume of the freezer is 250L, that is, 0.25m3. The specific steps of the intelligent control method are as follows:

[0090] Step 1: Set the cooling time t of the refrigerator to 300s, and detect the temperature T of the freezer when the refrigerator is running normally 1 For -23°C, the compressor speed R old 3600r / min;

[0091] Step 2: Open the door of the freezer, then close the door, and get the temperature T of the freezer after 10 seconds 2 -10°C.

[0092] Step 3: Calculate the load increase ΔQ caused by opening the freezer door;

[0093] First, calculate the air mass m of the freezer according to the volume of the freezer:

[0094] m=ρV=1.293kg / m 3 ×0.25m 3 =0.32325kg (2)

[0095] In formula (2), the value of standard air density ρ is 1.293kg / m3;

[0096] ΔQ=kcm(T 2 -T 1 )

[009...

Embodiment 3

[0124] see figure 1 , taking the air-cooled refrigerator using the BSA090NJMV inverter compressor produced by LG as an example, the room with the door open is a cold room, and the volume of the cold room is 280L, that is, 0.28m3. The specific steps of the intelligent control method are as follows:

[0125] Step 1: Set the cooling time t of the refrigerator to 120s, and detect the temperature T of the refrigerator compartment when the refrigerator is running normally 1 At 4°C, the compressor speed R old 2400r / min;

[0126] Step 2: Open the door of the refrigerating room, then close the door, and detect the temperature T of the refrigerating room after 10 seconds 2 is 9°C.

[0127] Step 3: Calculate the load increase ΔQ caused by opening the refrigerator door;

[0128] First, calculate the air mass m of the refrigerator according to the volume of the refrigerator:

[0129] m=ρV=1.293kg / m 3 ×0.28m 3 =0.36204kg (2)

[0130] In formula (2), the value of standard air density...

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Abstract

The invention relates to an intelligent control method of a variable-frequency refrigerator. The method comprises the following specific steps that 1, cooling time t of the refrigerator is set, temperatures T<1> of all compartments during normal operation of the refrigerator are detected, and a rotating speed R<old> of a compressor is determined; 2, after the refrigerator is opened and closed, a temperature T<2> of the door opened compartment is detected; 3, a load increment Delta Q caused by opening a door of the compartment is calculated; 4, refrigerating capacity Delta W to be increased bythe compressor is calculated according to cooling time; 5, a rotating speed R<new> of the compressor after the door is opened and closed is calculated according to a function of the rotating speed andthe refrigerating capacity of the compressor, the refrigerating capacity Delta W and the R<old> and the rotating speed of the compressor is adjusted to the R<new>; and 6, after a temperature of the door opened compartment drops to the T<1>, the compressor recovers the rotating speed R<old> and continues to run stably. According to the method, after the refrigerator is opened and closed, the rotating speed of the compressor can be directly and accurately improved, rapid cooling is achieved, time of temperature fluctuation in the refrigerator is greatly shortened, and the loss of energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of temperature regulation of frequency conversion refrigerators, and in particular relates to an intelligent control method of frequency conversion refrigerators. Background technique [0002] Refrigerator is one of the requisite home appliances in people's daily life, people can store all kinds of items through refrigerator, so the use of refrigerator is also very frequent, so there is the phenomenon of frequently opening and closing the refrigerator door. During the process of opening the door, the temperature inside the refrigerator will increase and the temperature will increase. The variable frequency compressor of the refrigerator can change its speed to change the cooling capacity of the compressor to cope with different heat loads. [0003] At present, in the control of variable frequency compressors, most of them adjust the compressor speed by controlling the periodic start-stop ratio of the compre...

Claims

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Application Information

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