Air conditioning system and air conditioner having the same

Abstract

An air conditioning system and an air conditioner having the same are provided. The air conditioning system comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, a directional control assembly, a first throttling element, a second throttling element, a gas-liquid separator and a liquid reservoir. The compressor comprises a first cylinder, a second cylinder, an exhaust port and a gas return port; an exhaust volume ratio of the second cylinder to the first cylinder is less than or equal to 0.1. The directional control assembly comprises a first valve port, a second valve port, a third valve port and a fourth valve port; when the air conditioning system is refrigerating, the first valve port is in communication with the second valve port, and the third valve port is in communication with the fourth valve port; when the air conditioning system is heating, the first valve port is in communication with third valve port, the second valve port is in communication with the fourth valve port, and a gas outlet of the gas-liquid separator is in communication with the second cylinder.

1 . An air conditioning system, comprising:
 a compressor comprising a first cylinder, a second cylinder, an exhaust port and a gas return port, a gas compressed by the first cylinder and the second cylinder being discharged from the exhaust port, wherein an exhaust volume of the first cylinder is V1, an exhaust volume of the second cylinder is V2, and the V1 and V2 meet: V2/V1≤0.1;   an outdoor heat exchanger comprising a first inlet and a first outlet, and an indoor heat exchanger comprising a second inlet and a second outlet, the first outlet being in communication with the second inlet;   a directional control assembly comprising a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port is in communication with the exhaust port, the fourth valve port is in communication with the gas return port, the second valve port is in communication with the first inlet, and the third valve port is in communication with the second outlet;   a first throttling element and a second throttling element connected in series between the indoor heat exchanger and the outdoor heat exchanger;   a gas-liquid separator comprising a first opening, a second opening and a gas outlet, wherein when the air conditioning system is refrigerating, the first valve port is in communication with the second valve port, the third valve port is in communication with the fourth valve port, the first opening is in communication with the first throttling element, the second opening is in communication with the second throttling element, and the gas outlet is in communication with the second cylinder via a medium-pressure suction pipe; when the air conditioning system is heating, the first valve port is in communication with the third valve port, the second valve port is in communication with the fourth valve port, the first opening is in communication with the second cylinder via the medium-pressure suction pipe, the second opening is in communication with first throttling element, and the gas outlet is in communication with the second throttling element; and   a liquid reservoir, wherein one end of the liquid reservoir is in communication with the fourth valve port, and the other end thereof is in communication with the gas return port via a low-pressure suction pipe.   
     
     
         2 . The air conditioning system according to  claim 1 , wherein the V1 and V2 meet: V2/V1≤0.09. 
     
     
         3 . The air conditioning system according to  claim 2 , wherein the V1 and V2 meet: 0.04≤V2/V1≤0.08. 
     
     
         4 . The air conditioning system according to  claim 3 , wherein the V1 and V2 meet: 0.04≤V2/V1≤0.07. 
     
     
         5 . The air conditioning system according to  claim 3 , wherein the V1 and V2 meet: 0.07≤V2/V1≤0.08. 
     
     
         6 . The air conditioning system according to  claim 1 , wherein the directional control assembly is a four-way valve. 
     
     
         7 . The air conditioning system according to  claim 1 , wherein the compressor is a gaseous refrigerant injection type compressor. 
     
     
         8 . An air conditioner, comprising an air conditioning system comprising:
 a compressor comprising a first cylinder, a second cylinder, an exhaust port and a gas return port, a gas compressed by the first cylinder and the second cylinder being discharged from the exhaust port, wherein an exhaust volume of the first cylinder is V1, an exhaust volume of the second cylinder is V2, and the V1 and V2 meet: V2/V1≤0.1;   an outdoor heat exchanger comprising a first inlet and a first outlet, and an indoor heat exchanger comprising a second inlet and a second outlet, the first outlet being in communication with the second inlet;   a directional control assembly comprising a first valve port, a second valve port, a third valve port and a fourth valve port, wherein the first valve port is in communication with the exhaust port, the fourth valve port is in communication with the gas return port, the second valve port is in communication with the first inlet, and the third valve port is in communication with the second outlet;   a first throttling element and a second throttling element connected in series between the indoor heat exchanger and the outdoor heat exchanger;   a gas-liquid separator comprising a first opening, a second opening and a gas outlet, wherein when the air conditioning system is refrigerating, the first valve port is in communication with the second valve port, the third valve port is in communication with the fourth valve port, the first opening is in communication with the first throttling element, the second opening is in communication with the second throttling element, and the gas outlet is in communication with the second cylinder via a medium-pressure suction pipe; when the air conditioning system is heating, the first valve port is in communication with the third valve port, the second valve port is in communication with the fourth valve port, the first opening is in communication with the second cylinder via the medium-pressure suction pipe, the second opening is in communication with first throttling element, and the gas outlet is in communication with the second throttling element; and   a liquid reservoir, wherein one end of the liquid reservoir is in communication with the fourth valve port, and the other end thereof is in communication with the gas return port via a low-pressure suction pipe.   
     
     
         9 . The air conditioner according to  claim 8 , wherein the V1 and V2 meet: V2/V1≤0.09. 
     
     
         10 . The air conditioner according to  claim 9 , wherein the V1 and V2 meet: 0.04≤V2/V1≤0.08. 
     
     
         11 . The air conditioner according to  claim 10 , wherein the V1 and V2 meet: 0.04≤V2/V1≤0.07. 
     
     
         12 . The air conditioner according to  claim 10 , wherein the V1 and V2 meet: 0.07<V2/V1≤0.08. 
     
     
         13 . The air conditioner according to  claim 8 , wherein the directional control assembly is a four-way valve. 
     
     
         14 . The air conditioner according to  claim 8 , wherein the compressor is a gaseous refrigerant injection type compressor.