3results about How to "Prevent liquid shock" patented technology

The application provides a refrigeration system with high-performance thermoelectric economizer in the field of semiconductors, comprising that the output ends of a compressor are connected with the input ends of a condenser and an evaporator respectively; two sides of a semiconductor refrigeration sheet are respectively provided with a cold surface heat exchanger and a hot surface heat exchanger; the output ends of the condenser are connected with the input ends of the cold surface heat exchanger and the hot surface heat exchanger respectively; the output end of the cold surface heat exchanger is connected with the evaporator through a first electronic expansion valve; a second electronic expansion valve is further arranged between the hot surface heat exchanger and the condenser, and the output end is connected with the input end of the compressor; a third electronic expansion valve is further arranged between the input end of the evaporator and the output end of the compressor. Through connecting the output ends of the compressor with the condenser and the evaporator respectively, conventional refrigeration can be carried out through the first electronic expansion valve, the condensed refrigerant can be warmed through the third electronic expansion valve, the refrigeration precision is effectively improved, and the compressor can be directly cooled through the second electronic expansion valve.

The utility model relates to an air conditioner, it includes indoor unit and outdoor unit, and the indoor unit includes indoor heat exchanger, and the outdoor unit includes compressor, four -way valve and outdoor heat exchanger, wherein, still be provided with defrosting heat exchanger in the outdoor unit, and the defrosting heat exchanger includes first channel and second channel, the both ends of first channel are connected with the exhaust end of compressor and the first end of outdoor heat exchanger through first branch, and the first switch valve is set up between compressor and first channel, the both ends of second channel are connected with the second end of indoor heat exchanger and the first end of outdoor heat exchanger through second branch, and the second switch valve is set up between second channel and indoor heat exchanger, this kind of defrosting mode can make indoor heat exchanger maintain heating function, and the heating continuity is high, and the comfort is good, and need not to change direction to four -way valve, be favorable to preventing compressor liquid knock, reduce system impact, significantly improve energy efficiency and prolong equipment life.

This invention discloses a centralized control method and system for hot gas defrosting. Through data acquisition, frost layer prediction and triggering, defrosting execution, and optimization feedback steps, it achieves intelligent and precise control of the defrosting process. The system includes a sensor group, an edge data acquisition module, a local controller, a communication module, a cloud-based centralized control platform, and actuators. This invention employs a fusion prediction model, combining rule-based rapid scoring with machine learning-based accurate prediction to dynamically assess frost risk and trigger defrosting, avoiding the blindness of traditional timed defrosting. Simultaneously, it ensures system stability through grouped sequential control and safety monitoring, and utilizes a cloud platform to aggregate multi-site data for global optimization scheduling and model iteration. This invention effectively reduces defrosting energy consumption, maintains stable storage / cabinet temperatures, and improves the operating efficiency and intelligent management level of the refrigeration system.