Air conditioning system with two-stage compression

Abstract

An air conditioning system with two-stage compression to solve the problems of high cost and low energy efficiency of the existing multi-stage compressors. Provided is an air conditioning system with two-stage compression, where the air conditioning system includes a compressor, a condenser, a throttling element, and an evaporator connected in sequence; the air conditioning system further includes a pressurizing unit disposed between the compressor and the condenser, and the pressurizing unit is capable of converting natural energy into mechanical energy to pressurize refrigerant discharged from the compressor for a second time. Since the pressurizing unit is capable of converting natural energy into mechanical energy to pressurize refrigerant discharged from the compressor for a second time, the air conditioning system can utilize a driving force provided by the natural energy to achieve two-stage compression, thereby improving the energy efficiency of the two-stage compression.

1 - 10 . (canceled) 
     
     
         11 . An air conditioning system with two-stage compression, comprising: a compressor, a condenser, a throttling element, and an evaporator connected in sequence; the air conditioning system further comprises a pressurizing unit disposed between the compressor and the condenser, and the pressurizing unit is configured to converting natural energy into mechanical energy to pressurize refrigerant discharged from the compressor for a second time. 
     
     
         12 . The air conditioning system with two-stage compression according to  claim 11 , wherein the pressurizing unit comprises a receiver and a pressurizer, the pressurizer is connected to the receiver, and the receiver receives the natural energy, converts the natural energy into mechanical energy and then transmits the mechanical energy to the pressurizer so that the pressurizer pressurizes the refrigerant for a second time. 
     
     
         13 . The air conditioning system with two-stage compression according to  claim 12 , wherein the pressurizer is an energy accumulation pressurizer, a rotating shaft of the energy accumulation pressurizer is connected to the receiver, a suction port of the energy accumulation pressurizer is in communication with an exhaust port of the compressor, and a discharge port of the energy accumulation pressurizer is in communication with an intake port of the condenser. 
     
     
         14 . The air conditioning system with two-stage compression according to  claim 12 , wherein the natural energy is marine energy, the receiver is a hydro-turbine, and an impeller shaft of the hydro-turbine is connected to the pressurizer. 
     
     
         15 . The air conditioning system with two-stage compression according to  claim 12 , wherein the natural energy is wind energy, the receiver is a wind turbine, and an impeller shaft of the wind turbine is connected to the pressurizer. 
     
     
         16 . The air conditioning system with two-stage compression according to  claim 12 , wherein the receiver further comprises a converter, and the pressurizer is connected to the receiver through the converter so that the converter transmits the mechanical energy from the receiver to the pressurizer. 
     
     
         17 . The air conditioning system with two-stage compression according to  claim 16 , wherein the converter is a bevel-gear direction converter, an input shaft of the bevel-gear direction converter is connected to the receiver, and an output shaft of the bevel-gear direction converter is connected to the pressurizer. 
     
     
         18 . The air conditioning system with two-stage compression according to  claim 16 , wherein the converter is a worm-and-gear direction converter, an input shaft of the worm-and-gear direction converter is connected to the receiver, and an output shaft of the worm-and-gear direction converter is connected to the pressurizer. 
     
     
         19 . The air conditioning system with two-stage compression according to  claim 11 , wherein the air conditioning system further comprises a sub-cooling unit, and the sub-cooling unit comprises a sub-cooling inlet, a first sub-cooling outlet, and a second sub-cooling outlet, wherein the sub-cooling inlet is in communication with a liquid outlet of the condenser, the first sub-cooling outlet is in communication with an inlet of the throttling element, and the second sub-cooling outlet is in communication with the exhaust port of the compressor. 
     
     
         20 . The air conditioning system with two-stage compression according to  claim 11 , wherein the air conditioning system further comprises an economizer, a flasher, or a sub-cooler.