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Two-way valve fault detection method and air conditioner using same

A fault detection and two-way valve technology, applied in the field of two-way valves, can solve the problems of increased cost, greater influence of the constant temperature and dehumidification system, and the detection device occupies the space of the air conditioner, so as to achieve the effect of reducing maintenance costs.

Active Publication Date: 2022-04-22
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing constant temperature dehumidification method, a two-way valve is generally added to the air conditioner to divide the evaporator into a reheating section and a dehumidification section. After entering the constant temperature dehumidification mode, the electromagnetic two-way valve is energized and opened to throttle the refrigerant and evaporate The temperature in the reheating section of the evaporator is high, and the temperature in the dehumidification section is low. After passing through the evaporator, part of the air is heated and part of it is dehumidified. The two are mixed and then blown out, so as to achieve the purpose of constant temperature dehumidification. The dehumidification system has a greater impact, but usually the detection of the two-way valve is detected by adding a number of detection devices to the air conditioner internal unit. The added detection devices occupy the space of the air conditioner internal unit and increase the cost of later maintenance

Method used

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  • Two-way valve fault detection method and air conditioner using same
  • Two-way valve fault detection method and air conditioner using same
  • Two-way valve fault detection method and air conditioner using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 1 It is a schematic flowchart of Embodiment 1 of the two-way valve fault detection method shown in the embodiment of the present application.

[0056] see figure 1 , Embodiment 1 of the two-way valve fault detection method in the embodiment of the present application includes:

[0057] 101. Control the opening of the two-way valve in the constant temperature dehumidification mode of the air conditioner;

[0058] Since the two-way valve is mainly used in the constant temperature dehumidification mode of the air conditioner, it throttles the refrigerant and divides the evaporator into a reheating section and a dehumidification section. The air is heated in the reheating section and dehumidified in the dehumidification section. After blowing out, so as to achieve the purpose of constant temperature dehumidification, therefore, in the constant temperature dehumidification mode can more accurately and timely evaluate the operation of the two-way valve.

[0059] 102...

Embodiment 2

[0074] In practical applications, on the basis of Embodiment 1, this embodiment specifically introduces how to judge whether to enter the two-way valve according to the first operating time, the first evaporator temperature, the first indoor ambient temperature, and the first temperature change rate. Fault judgment mode.

[0075] figure 2 It is a schematic flowchart of Embodiment 2 of the two-way valve fault detection method shown in the embodiment of the present application.

[0076] see figure 2 , Embodiment 2 of the two-way valve fault detection method in the embodiment of the present application includes:

[0077] 201. Subtract the first evaporator temperature from the first indoor ambient temperature to obtain a first temperature difference;

[0078] 202. Determine whether the first running duration is greater than the first time threshold;

[0079] 203. If the first running time is longer than the first time threshold, judge whether the first temperature difference...

Embodiment 3

[0095] In practical applications, on the basis of the above embodiments, the first temperature difference threshold has different value requirements.

[0096] image 3 It is a schematic flowchart of Embodiment 3 of the two-way valve fault detection method shown in the embodiment of the present application.

[0097] see image 3 , the third embodiment of the two-way valve fault detection method in the embodiment of the present application includes:

[0098] 301. Determine whether the first indoor ambient temperature is less than a first temperature threshold;

[0099] 302. If the first indoor ambient temperature is lower than the first temperature threshold, set the first temperature difference threshold to ΔT1;

[0100] 303. If the first indoor ambient temperature is greater than or equal to the first temperature threshold, determine whether the first indoor ambient temperature is smaller than the second temperature threshold;

[0101] 304. If the first indoor ambient temp...

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Abstract

The invention relates to a two-way valve fault detection method and an air conditioner using the method. The method comprises the steps that a two-way valve is controlled to be opened in a constant-temperature dehumidification mode of the air conditioner; detecting a first operation duration of the constant-temperature dehumidification mode, a first evaporator temperature, a first indoor environment temperature and a first temperature change rate of an evaporator; judging whether to enter a fault judgment mode of the two-way valve or not; if the two-way valve enters the fault judgment mode, detecting a second operation duration of the constant-temperature dehumidification mode, a second evaporator temperature, a second indoor environment temperature and a second temperature change rate of the evaporator; and whether the two-way valve breaks down or not is judged. According to the scheme, whether the two-way valve breaks down or not can be accurately and timely judged through the system parameters of the air conditioner, a detection device does not need to be additionally arranged in the air conditioner, sufficient installation space is reserved for necessary mechanisms in the air conditioner, and the later maintenance cost of the additionally arranged detection device is also reduced.

Description

technical field [0001] The present application relates to the technical field of two-way valves, in particular to a two-way valve fault detection method and an air conditioner using the method. Background technique [0002] In the existing constant temperature dehumidification method, a two-way valve is generally added to the air conditioner to divide the evaporator into a reheating section and a dehumidification section. After entering the constant temperature dehumidification mode, the electromagnetic two-way valve is energized and opened to throttle the refrigerant and evaporate The temperature in the reheating section of the evaporator is high, and the temperature in the dehumidification section is low. After passing through the evaporator, part of the air is heated and part of it is dehumidified. The two are mixed and then blown out, so as to achieve the purpose of constant temperature dehumidification. The dehumidification system has a greater impact, but the detection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/38F24F11/61F24F11/64F24F11/65F24F11/72F24F11/84F24F11/88F24F110/10F24F140/20
CPCF24F11/38F24F11/61F24F11/64F24F11/65F24F11/72F24F11/84F24F11/88F24F2110/10F24F2140/20Y02B30/70
Inventor 翟振坤连彩云廖敏梁博王现林熊绍森
Owner GREE ELECTRIC APPLIANCES INC