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Control method and device of reversing abnormality of four-way valve of air conditioner and air conditioner

A control method and technology of a control device, which are applied in the directions of space heating and ventilation control input, control input involving air characteristics, space heating and ventilation, etc. Abnormal, affecting the user's heat demand and other problems, to achieve the effect of solving reliability problems

Active Publication Date: 2019-07-09
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a control method for the abnormal reversing of the four-way valve of the air conditioner, so as to solve the problem of the air conditioner in the prior art when the four-way valve reversing fails in the heating mode, and the cold air is blown out, which affects the user's perception of heat. need

Method used

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  • Control method and device of reversing abnormality of four-way valve of air conditioner and air conditioner
  • Control method and device of reversing abnormality of four-way valve of air conditioner and air conditioner
  • Control method and device of reversing abnormality of four-way valve of air conditioner and air conditioner

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Embodiment 1

[0039] This embodiment provides a method for controlling the abnormal direction of the four-way valve of the air conditioner, combining figure 1 shown, including the following steps:

[0040] Step S1, the air conditioner is turned on in the heating mode and operates in the heating mode. The judgment and control basis of this method is that the air conditioner is in the heating mode. the control method described;

[0041] Step S2. In the heating mode, detect the temperature Tn of the inner panel and the temperature Ti of the indoor environment. The temperature of the inner panel refers to the temperature of the coil of the indoor unit. When the judgment process is reached, the judgment is made on the basis of the internal panel temperature Tn and the indoor ambient temperature Ti at the moment of judgment;

[0042] Step S3, the air conditioner runs for the first time t1. This step refers to the air conditioner running for the first time t1 after the heating mode is turned on,...

Embodiment 2

[0050] When the four-way valve is abnormal, it is mostly caused by the failure of the four-way valve to be powered, and there are certain reasons that cause the four-way valve to be powered off for a certain time, and it will be powered on again after restarting. Example On the basis of embodiment one, in combination with figure 2 As shown, when performing the first judgment of step S4, when the judgment result is that the four-way valve reversing is abnormal and the protection program is carried out, the number of judgments Fn is recorded, and it is judged whether the number of judgments Fn is greater than the preset number of times F1. If the number of times Fn is greater than the preset number of times F1, it will be judged that the four-way valve is reversing abnormally and the protection program will be carried out. At the same time, the outdoor unit will be shut down. , after running for the second time period t2, re-detect the inner disk temperature Tn and the indoor a...

Embodiment 3

[0053] On the basis of Embodiment 1 or Embodiment 2, this embodiment solves the problem that in the prior art, when the ambient temperature of the air conditioner is high and the heat output of the air conditioner is required, the abnormal direction of the four-way valve causes the air conditioner to fail to supply heat normally. problems, specific solutions combined with image 3 As shown, when the judgment result of the first judgment in step S4 is that the difference ΔT1 is greater than or equal to the first preset value T1, when the protection program is performed, a second judgment is also performed, and the specific steps of the second judgment are:

[0054] Step S5. Determine whether the indoor ambient temperature Ti is greater than or equal to the second preset value T2. When the indoor ambient temperature Ti is greater than or equal to the second preset value T2, the auxiliary heating function is turned on, and the fan is adjusted to low windshield operation. When the ...

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Abstract

The invention provides a control method and device of reversing abnormality of a four-way valve of an air conditioner and the air conditioner and relates to the technical field of air conditioners. The control method comprises the steps that a control mode starts, the inner coiler temperature Tn and the indoor environment temperature Ti are detected, the air conditioner operates for a first periodt1, primary judgment is conducted, wherein, during the primary judgment, the difference value delta T1 between the indoor environment temperature Ti and the inner coiler temperature Tn is calculated,whether the difference value delta T1 is larger than or equal to a first preset value T1 is judged, if yes, reversing of the four-way valve is judged to be abnormal, and a protection procedure is executed, and if not, it is judged that reversing of the four-way valve is normal, and the air conditioner normally operates. According to the control method and device of the reversing abnormality of the four-way valve of the air conditioner and the air conditioner, in the heating mode, through comparison between the indoor environment temperature and the coiler temperature, whether the four-way valve conducts reversing successfully or not is judged; when reversing of the four-way valve fails, a fault alarm is sent out, a compressor is stopped, and therefore the situation that the compressor still works after reversing of the four-way valve of the air conditioner is abnormal, and then the air conditioner blows out cold air in the heating mode is avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a control method, a control device and an air conditioner for abnormal reversing of an air conditioner four-way valve. Background technique [0002] In the prior art, the four-way reversing valve realizes mutual conversion between cooling and heating by changing the flow direction of the refrigerant in the pipeline. For example, one operation mode is: when the four-way reversing valve is not electrified, it is in the cooling mode. The refrigerant comes out of the compressor, first enters the condenser through the four-way reversing valve to cool, and then throttles and enters the indoor unit evaporator; When the four-way reversing valve is electrified, it is in heating mode. The refrigerant comes out of the compressor, enters the heat exchanger of the indoor unit through the four-way reversing valve, and then throttles and enters the heat exchanger of the outdoor unit to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/52F24F11/89F24F110/10
CPCF24F11/52F24F11/64F24F11/89F24F2110/10
Inventor 贺宝林白云忠敖正玉
Owner NINGBO AUX ELECTRIC
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