Refrigerant Pressure Control for Low-Noise Gas Cooler Operation

The patent introduces a pressure regulation throttle section as an intermediary device between the gas cooler and the evaporator. This throttle section regulates refrigerant pressure independently of fan rotation speed, allowing the fan to operate at optimal speeds without directly controlling pressure. The throttle acts as a mediator that decouples the relationship between fan speed and refrigerant pressure, solving the contradiction by enabling pressure control without the harmful noise of high-speed fan operation.

The patent implements a control section that monitors refrigerant pressure and temperature, and adjusts the pressure regulation throttle section accordingly. This feedback mechanism allows the system to maintain optimal refrigeration performance by dynamically regulating pressure based on actual conditions, rather than relying on high fan speeds. The feedback control enables the fan to operate at lower, quieter speeds while still achieving efficient heat exchange through precise pressure management.

The patent changes the pressure parameter distribution in the refrigeration cycle by introducing the pressure regulation throttle section. Instead of relying on high discharge pressure from the compressor to achieve desired refrigeration effects, the system uses the throttle section to create controlled pressure drops at specific points in the cycle. This parameter change allows the compressor to operate at lower, more efficient pressures while still achieving effective refrigeration through the throttling process and associated heat exchange.