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Defrosting control method and device of evaporator and refrigeration equipment

A control method and a technology of a control device, which are applied to household refrigeration devices, lighting and heating equipment, and defrosting, can solve problems such as poor control of evaporator defrosting timing and affecting storage temperature, so as to increase real effectiveness and reduce effect of influence

Pending Publication Date: 2021-01-05
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a defrosting control method, device and refrigeration equipment for an evaporator, so as to solve the problem in the prior art that the defrosting timing of the evaporator of the refrigeration equipment is poorly controlled and the temperature of the storage room is affected

Method used

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  • Defrosting control method and device of evaporator and refrigeration equipment
  • Defrosting control method and device of evaporator and refrigeration equipment
  • Defrosting control method and device of evaporator and refrigeration equipment

Examples

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Effect test

Embodiment 1

[0030] figure 1 It is a flow chart of the defrosting control method of the evaporator according to the embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0031] Step S101, monitoring the temperature of the air inlet side of the evaporator.

[0032] Step S102, after the temperature on the air inlet side reaches the preset frosting temperature, monitor the air pressure in each area of ​​the evaporator; wherein, the back side of the evaporator is divided into multiple areas.

[0033] Specifically, the air pressure in each area is monitored through an air pressure sensor arranged in each area of ​​the evaporator; wherein, a net cover structure is added on the back side of the evaporator to place the air pressure sensor.

[0034] Step S103, according to the air pressure of each area, determine whether to execute defrosting operation for this area. Specifically, the difference between the air pressure of each area and the pr...

Embodiment 2

[0048] figure 2 is a flow chart of air cooler defrosting control according to an embodiment of the present invention, such as figure 2 As shown, the process includes the following steps:

[0049] In step S201, the cooling fan starts to work.

[0050] Step S202, acquiring the temperature parameter of the air intake side of the evaporator. A temperature sensing package can be installed on the air inlet side of the evaporator.

[0051] Step S203, judging whether the temperature on the air intake side reaches the preset frosting temperature; if yes, execute step S207; if not, execute step S204.

[0052] Step S204, acquiring air pressure parameters of each air pressure sensor.

[0053] Step S205, judge whether the air pressure in each area is within the normal air pressure range; if yes, return to step S204; if not, it is suspected that there is foreign matter blocking the heat exchanger, and then execute step S206. It should be noted that if there are different values ​​in ...

Embodiment 3

[0063] corresponds to figure 1 The defrosting control method of the evaporator introduced, this embodiment provides a defrosting control device for the evaporator, such as image 3 The structural block diagram of the defrosting control device of the evaporator shown, the device includes:

[0064] A temperature monitoring module 10, configured to monitor the temperature of the air inlet side of the evaporator;

[0065] The air pressure monitoring module 20 is used to monitor the air pressure in each area of ​​the evaporator after the temperature on the air inlet side reaches the preset frosting temperature; wherein, the back side of the evaporator is divided into multiple areas;

[0066] The control module 30 is configured to determine whether to perform a defrosting operation for this area according to the air pressure of each area.

[0067] The above-mentioned control module 30 includes: a calculation unit, which is used to calculate the difference between the air pressure ...

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Abstract

The invention discloses a defrosting control method and device of an evaporator and refrigeration equipment. The method includes the steps that the temperature of the air inlet side of the evaporatoris monitored; after the temperature of the air inlet side reaches the preset frosting temperature, the air pressure of each area of the evaporator is monitored; the back side of the evaporator is divided into multiple areas; and according to the air pressure of each area, whether defrosting operation is executed for the area is determined. According to the defrosting control method and device of the evaporator and the refrigeration equipment, the air pressure change monitored by an air pressure sensor is used as a parameter for detecting the frosting degree, so that a unit is controlled to execute defrosting modes with different defrosting degrees. In addition, whether a heat exchanger is mixed with other sundries to influence heat exchange can be synchronously judged according to detection information such as a temperature sensing bulb and the like when the frosting temperature is not reached, and the true effectiveness of air pressure sensor detection is improved. The different areasof the evaporator can be defrosted accurately, and the influence of defrosting on the temperature of a storeroom is reduced.

Description

technical field [0001] The present invention relates to the technical field of refrigeration equipment, in particular to a defrosting control method and device for an evaporator and refrigeration equipment. Background technique [0002] In the cold chain industry chain, cold storage is an important link. In cold storage, finned evaporators are more commonly used refrigeration equipment for refrigeration storage. The air cooler has been working in a low-temperature cold storage environment for a long time, and the evaporator has been frosted under low-temperature conditions for a long time. This is a problem that has always appeared in the research and development of air cooler products. [0003] In the current market, there have been many established technologies for evaporator defrosting, such as defrosting through electric heating devices. In the defrosting process of the evaporator electric heating, the temperature of the general heating tube is as high as about 200°C, a...

Claims

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Application Information

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IPC IPC(8): F25D29/00F25D21/08
CPCF25D21/002F25D21/08
Inventor 徐豪昌李冠铖肖福佳
Owner GREE ELECTRIC APPLIANCES INC
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