Apparatus for improving refrigeration capacity

摘要

A refrigeration, air conditioning or other cooling system is disclosed. The refrigeration system includes a refrigerant storage tank fluidly connected to a refrigerant expansion device which is fluidly connected to a refrigerant evaporator for absorbing ambient heat, a refrigerant vapor compressor fluidly connected to the refrigerant evaporator and a refrigerant condenser fluidly connected to the refrigerant compressor and the refrigerant storage tank. A liquid refrigerant pump and eductor are included in the system along with a refrigerant receiving tank and associated controls that maintain the appropriate Net Positive Suction Head at the inlet to the pump along with proper flow and pressure control in the system.

主权项

1. A refrigeration system for refrigeration, air conditioning or other cooling application comprising:
a) A refrigerant storage tank for storing liquid refrigerant; b) A refrigerant expansion device comprising an inlet and an outlet for receipt of liquid refrigerant and lowering the pressure thereof; c) A refrigerant evaporator fluidly connected to the outlet of the refrigerant expansion device in which ambient heat is absorbed and the liquid refrigerant is evaporated to the vapor state; d) A vapor compressor fluidly connected to the evaporator for receiving the refrigerant vapor and raising the pressure thereof; e) A refrigerant condenser fluidly connected to the vapor compressor for condensing the refrigerant vapor back to the liquid state; f) A refrigerant receiving tank fluidly connected to the condenser for receiving the liquid refrigerant from the condenser; g) A monitoring device and liquid level probe to maintain the level of liquid refrigerant in the receiving tank at a minimum predetermined level; h) A liquid refrigerant pump driven by an electric raptor which receives the liquid refrigerant from the refrigerant receiving tank, pressurizes the refrigerant and discharges the refrigerant to the inlet of the refrigerant expansion device; i) An eductor fluidly connected to the discharge from the liquid refrigerant pump, the refrigerant storage tank and the refrigerant receiving tank and which utilizes a portion of the pressurized refrigerant from the liquid refrigerant pump to continuously transfer a constant preselected amount of liquid refrigerant from the refrigerant storage tank to the refrigerant receiving tank;Wherein the receiving tank is vertically elevated above the liquid pump and the minimum predetermined level is set to maintain the minimum net positive suction head at the liquid refrigerant pump to prevent cavitation of the liquid refrigerant in the pump.