Four-way valve anomaly detection method and device and air conditioning unit

A technology of abnormality detection and four-way valve, applied in the field of four-way valve, can solve the problem that abnormality of four-way valve commutation cannot be detected and handled in time, and achieve the effect of improving operation reliability, reducing failure rate and maintenance rate

Active Publication Date: 2019-04-02
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a four-way valve abnormal detection method, device and air-conditioning unit to at least solve t...

Method used

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  • Four-way valve anomaly detection method and device and air conditioning unit
  • Four-way valve anomaly detection method and device and air conditioning unit
  • Four-way valve anomaly detection method and device and air conditioning unit

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Embodiment 1

[0041] In preferred embodiment 1 of the present invention, a four-way valve abnormality detection method is provided, which can be directly applied to various four-way valves. Specifically, figure 1 An alternative flowchart showing the method, such as figure 1 As shown, the method includes the following steps S102-S106:

[0042] S102: After monitoring the reversing of the four-way valve, judge whether the reversing of the four-way valve is abnormal according to the preset judgment conditions;

[0043] S104: When the direction of the four-way valve is abnormal, accumulate the number of faults of the four-way valve, and handle the faults of the four-way valve;

[0044] S106: Accumulate the number of reversing times of the four-way valve, and adjust the preset judgment condition according to the number of failures and the number of reversing times.

[0045] In the above embodiment, an automatic detection and automatic maintenance scheme is provided for the abnormality of the f...

Embodiment 2

[0075] Based on the four-way valve abnormality detection method provided in the above-mentioned embodiment 1, a four-way valve abnormality detection device is also provided in the preferred embodiment 2 of the present invention, specifically, Figure 8 shows an optional structural block diagram of the device, such as Figure 8 As shown, the device includes:

[0076] A judging module 802, configured to judge whether the four-way valve is abnormally reversing according to preset judgment conditions after monitoring the reversing of the four-way valve;

[0077] The processing module 804 is connected with the judging module 802, and is used for accumulating the number of faults of the four-way valve when the direction of the four-way valve is abnormal, and performing four-way valve fault processing;

[0078] The adjustment module 806 is connected with the processing module 804, and is used for accumulating the reversing times of the four-way valve, and adjusting the preset judgme...

Embodiment 3

[0081] Based on the four-way valve abnormality detection device provided in the above-mentioned embodiment 2, in preferred embodiment 3 of the present invention, an air-conditioning unit is also provided, including the above-mentioned four-way valve abnormality detection device.

[0082] In the above embodiment, an automatic detection and automatic maintenance scheme is provided for the abnormality of the four-way valve. After the four-way valve is detected, it is judged according to the preset judgment When the direction change of the one-way valve is abnormal, perform four-way valve fault treatment and adjust the preset judgment conditions. Through the above-mentioned solution, the problem that the four-way valve in the prior art cannot be detected and dealt with abnormally in time is effectively solved, the operation reliability of the heat pump unit is improved, and the failure rate and maintenance rate of the unit are reduced at the same time.

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Abstract

The invention discloses a four-way valve anomaly detection method and device and an air conditioning unit. The method comprises the following steps that whether the reversing of a four-way valve is abnormal or not is judged according to a preset judgment condition after the reversing of the four-way valve is monitored; when the reversing of the four-way valve is abnormal, the fault frequency of the four-way valve is accumulated, and the fault treatment of the four-way valve is carried out; and the reversing frequency of the four-way valve is accumulated, and the preset judgment condition is adjusted according to the fault frequency and the reversing frequency. According to the method and device and the air conditioning unit, the problem that in the prior art, the four-way valve cannot be detected and treated in time when reversing of the four-way valve is abnormal is solved, the operation reliability of a heat pump unit is improved, and meanwhile the fault rate and the maintenance rateof the unit are reduced.

Description

technical field [0001] The present invention relates to the technical field of four-way valves, in particular to a four-way valve abnormality detection method, device and air conditioning unit. Background technique [0002] In recent years, due to weather factors, national policies and energy consumption factors, the heat pump market has developed rapidly. Most heat pump products use four-way valves to switch between cooling and heating. When heating at low temperatures, there is defrosting, and the switching of four-way valves is more frequent. The four-way valve is a pressure-difference-driven valve. It depends on the power-off / power-on of the coil to drive the pilot valve to change the pressure difference on both sides of the piston and push the piston to overcome the frictional resistance of the slide valve to complete the reversing work. When the system pressure difference is insufficient, it will cause no reversing. Or the situation where the commutation is not in pla...

Claims

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Application Information

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IPC IPC(8): F24F11/38F24F11/64F24F11/67F25B41/04F25B41/20
CPCF24F11/38F24F11/64F24F11/67F25B2600/25F25B41/20
Inventor 王晓红张鸿宙谷月明郑神安
Owner GREE ELECTRIC APPLIANCES INC
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