Improved heat pump freeze protection system
By introducing an automatic inflation and deflation system into the heat pump system, the problem of equipment freezing after a power outage has been solved, realizing automatic antifreeze function under unattended operation, simplifying equipment management and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 吕瑞强
- Filing Date
- 2025-05-09
- Publication Date
- 2026-06-02
AI Technical Summary
When heat pump hot water or heating systems encounter abnormal power outages, existing technologies require manual drainage and water injection, which leads to inconvenience in equipment management and makes unattended equipment prone to freezing damage, especially in small-scale equipment in rural areas where freezing damage and scrapping are common problems.
An automatic inflation and deflation system was designed, including an antifreeze temperature sensor, an inflation and deflation mechanism, an air-liquid balance mechanism, and a flow-stop electric valve. The system uses a condition controller to automatically drain water from the outdoor water circuit to a water tank or container during a power outage, and automatically vents air and restarts the equipment after power is restored.
It achieves automatic antifreeze in unattended operation, avoids manual operation, reduces operating costs and maintenance rate, prevents equipment from freezing and reduces the use of high-cost antifreeze.
Smart Images
Figure CN224316434U_ABST