Energy-saving direct expansion liquid supply refrigeration system and tube ice machine

Abstract

This utility model relates to the field of refrigeration technology, and discloses an energy-saving direct expansion liquid supply refrigeration system and a tube ice machine. The system includes a compressor, a condenser, an evaporator, and a throttling valve, connected sequentially by pipes. A reflux-type gas-liquid separator is provided between the evaporator and the compressor, with its bottom return port connected to the evaporator to achieve liquid refrigerant circulation. When liquid refrigerant accumulates in the reflux-type gas-liquid separator, it flows back to the evaporator by gravity through the bottom return port, achieving near-zero superheat throttling. This utility model overcomes the limitations of superheat, allowing the evaporator to receive a significantly increased amount of refrigerant, thus improving heat exchange efficiency. Simultaneously, through liquid refrigerant circulation and intelligent temperature control, it solves problems of high energy consumption, reflux blockage, and low-temperature freezing. Furthermore, this utility model also discloses a tube ice machine using this energy-saving direct expansion liquid supply refrigeration system.

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