A high reliability control method and system for a low temperature heat pump

By monitoring environmental parameters and shutdown status, implementing hierarchical heating start and multi-dimensional real-time parameter adaptive adjustment, the reliability problem of low-temperature heat pumps in cold areas is solved, and the safe and reliable operation of the compressor and efficient control of the low-temperature heat pumps are achieved.

CN118816436BActive Publication Date: 2025-03-25GUANGDONG POWERWORLD NEW ENERGY TECH CO LTD
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Patent Information

Application Number
CN202411016666.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-29
Publication Date
2025-03-25
Estimated Expiration
2044-07-29

AI Technical Summary

Technical Problem

In the application of low-temperature heat pumps in cold areas, traditional control methods cannot effectively deal with problems under low-temperature conditions, resulting in compressor failure and performance degradation.

Method used

By monitoring the environmental parameters and the shutdown status of the low-temperature heat pump, implementing hierarchical heating start, and obtaining multi-dimensional real-time parameters for adaptive adjustment, ensuring that the parameters are within the preset operating range and real-time fault diagnosis and early warning response are carried out.

Benefits of technology

It effectively avoids the wear of the compressor in low-temperature environment, ensures the safe and reliable operation of the low-temperature heat pump, and improves control reliability and operating effect.

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Abstract

The present invention provides a high-reliability control method and system for a low-temperature heat pump, including: obtaining environmental parameters and the shutdown state of the low-temperature heat pump, and performing graded heating and starting of the compressor crankshaft in the low-temperature heat pump according to the environmental parameters and the shutdown state based on the graded heating strategy; obtaining multi-dimensional real-time parameters of the low-temperature heat pump based on the graded heating and starting result, and performing the same-level adaptive adjustment of the multi-dimensional real-time parameters to a preset operating range according to the state change of the multi-dimensional real-time parameters; performing real-time fault diagnosis of the low-temperature heat pump based on the same-level adaptive adjustment result, and performing an early warning response when a fault exists. Avoiding compressor wear failure caused by poor lubrication when the heat pump is started in a low-temperature environment, facilitating timely early warning response when a fault occurs, while ensuring the safe operation of the low-temperature heat pump, improving the reliability of high-control of the low-temperature heat pump, and ensuring the operating effect of the low-temperature heat pump.
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