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A four-way valve reversing abnormality control method, storage medium and air conditioner

A technology of abnormal control and four-way valve, which is applied in heating and ventilation control system, heating mode, space heating and ventilation, etc. Problems such as hot water units, to achieve the effect of improving accuracy and system reliability, and improving accuracy

Active Publication Date: 2021-05-07
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is suitable for the detection of conventional household air conditioners, but it is not suitable for air-cooled hot and cold water units, and cannot analyze and judge the specific situation of the four-way valve of the air-cooled and hot water units.

Method used

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  • A four-way valve reversing abnormality control method, storage medium and air conditioner

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A method for controlling an abnormality in the direction of a four-way valve.

[0019] Such as figure 1 As shown, a four-way valve commutation abnormality control method, the specific steps are as follows:

[0020] After the unit is started, it will confirm the cooling and heating operating status according to the operating mode set by the user. During the heating operation of the unit, confirm the heating and defrosting status according to the defrosting status confirmed by the unit controller.

[0021] After the heating operation of the unit starts or the end of defrosting, after the compressor runs for 90s, judge the relationship between the inlet water temperature Tj and the outlet water temperature Tc, the relationship between the outlet water temperature Tc and the refrigerant liquid pipe temperature Ty, if both meet: Tj-Tc>1 ℃ and Tc -Ty > 4 ℃, it is judged that the four-way valve of the unit is not in place, and there is a commutation abnormality...

Embodiment 2

[0024] Embodiment 2: a storage medium.

[0025] A storage medium is used for storing a computer program, and when the computer program is invoked by a processor, the method for controlling the abnormality of the four-way valve reversing described in Embodiment 1 is implemented.

Embodiment 3

[0026] Embodiment 3: an air conditioner.

[0027] An air conditioner includes a processor and a memory, and the memory is used to store a computer program, wherein when the computer program is invoked by the processor, the method for controlling the abnormality of the four-way valve reversing described in Embodiment 1 is implemented.

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Abstract

The invention provides a four-way valve reversing abnormality control method, storage medium and air conditioner. After the air conditioner unit is turned on and running, the current operating state of the unit is detected, and the running time of the compressor is detected in real time. When the running time of the compressor reaches the set value, Detect the outlet water temperature, inlet water temperature and refrigerant liquid pipe temperature, calculate the temperature difference between the outlet water temperature and inlet water temperature, calculate the temperature difference between the outlet water temperature and the refrigerant liquid pipe temperature, and judge whether the four-way valve of the unit is reversing according to the temperature difference normal, and then adjust the operating status of the unit. According to the various states of the unit operation, different judgment standards are set to detect and judge the reversing situation of the four-way valve. When the four-way valve reversing is abnormal, the fault can be judged timely and accurately to protect the unit.

Description

technical field [0001] The invention relates to the technical field of air-conditioning control, in particular to a method for controlling abnormality in the direction of a four-way valve, a storage medium, and an air-conditioner. Background technique [0002] In the heat pump system, the four-way valve is a device to realize the conversion between its cooling mode and heating mode, so as to realize the heating function of the heat pump air conditioner and meet the needs of users. For air-cooled hot and cold water air conditioning units, when the four-way valve changes direction abnormally, the heating and cooling of the system will not work normally, seriously affecting the use of users. When the four-way valve is abnormal in the heating operation mode, it is very easy to cause the heat exchanger to freeze and crack when the unit is running in the cooling state. When the unit enters defrosting, if the four-way valve is not switched in time, the unit will not be able to real...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/38F24F11/64F24F11/61F24F11/84F24F11/41
CPCF24F11/38F24F11/41F24F11/61F24F11/64F24F11/84
Inventor 曾奕罗建飞唐小朱郭庆郭旭
Owner GREE ELECTRIC APPLIANCES INC