Air-conditioner

Abstract

An air-conditioner is provided with a flow path including a portion through which a gas distributor, a second part, a first part, and a gas-liquid two-phase distributor are sequentially connected. The air-conditioner is provided with another flow path including a portion through which a gas distributor, a third part, a fourth part, and a gas-liquid two-phase distributor are sequentially connected. The flow path and another flow path are connected in parallel with respect to a refrigeration cycle circuit in such a manner that the gas-liquid two-phase distributor and the gas-liquid two-phase distributor are connected and the gas distributor and the gas distributor are connected. The first part is arranged on a windward side and the second part is arranged on a leeward side. The third part is arranged on the windward side and the fourth part is arranged on the leeward side.

1 . An air-conditioner comprising:
 a refrigeration cycle circuit comprising an outdoor unit and an indoor unit, a non-azeotropic refrigerant mixture circulating through the refrigeration cycle circuit, wherein   at least one of the outdoor unit and the indoor unit comprises;
 a first heat exchanger comprising a first part and a second part connected in series, 
 a second heat exchanger comprising a third part and a fourth part connected in series, 
 a first gas-liquid two-phase distributor connected on a side opposite to a side where the second part is connected, with respect to the first part, 
 a first gas distributor connected on a side opposite to a side where the first part is connected, with respect to the second part, 
 a second gas distributor connected on a side opposite to a side where the fourth part is connected, with respect to the third part, 
 a second gas-liquid two-phase distributor connected on a side opposite to a side where the third part is connected, with respect to the fourth part, 
 a first flow path comprising a portion through which the first gas distributor, the second part, the first part, and the first gas-liquid two-phase distributor are sequentially connected, and 
 a second flow path comprising a portion through which the second gas distributor, the third part, the fourth part, and the second gas-liquid two-phase distributor are sequentially connected, 
   the first flow path where the first heat exchanger is arranged and the second flow path where the second heat exchanger is arranged are connected in parallel with respect to the refrigeration cycle circuit in such a manner that the first gas-liquid two-phase distributor and the second gas-liquid two-phase distributor are connected and the first gas distributor and the second gas distributor are connected,   the air-conditioner has a first operation mode in which the first heat exchanger and the second heat exchanger function as a condenser and a second operation mode in which the first heat exchanger and the second heat exchanger function as an evaporator, and   with respect to a direction of passage of air that passes through the first heat exchanger and the second heat exchanger,
 the first part is arranged on a windward side, 
 the second part is arranged on a leeward side, 
 the third part is arranged on the windward side, and 
 the fourth part is arranged on the leeward side. 
   
     
     
         2 . The air-conditioner according to  claim 1 , wherein
 in the first operation mode,   in the first flow path, the non-azeotropic refrigerant mixture flows as a counterflow that sequentially flows through the first gas distributor, the second part arranged on the leeward side, the first part arranged on the windward side, and the first gas-liquid two-phase distributor, and   in the second flow path, the non-azeotropic refrigerant mixture flows as a parallel flow that sequentially flows through the second gas distributor, the third part arranged on the windward side, the fourth part arranged on the leeward side, and the second gas-liquid two-phase distributor.   
     
     
         3 . The air-conditioner according to  claim 1 , wherein
 in the second operation mode,   in the first flow path, the non-azeotropic refrigerant mixture flows as a parallel flow that sequentially flows through the first gas-liquid two-phase distributor, the first part arranged on the windward side, the second part arranged on the leeward side, and the first gas distributor, and   in the second flow path, the non-azeotropic refrigerant mixture flows as a counterflow that sequentially flows through the second gas-liquid two-phase distributor, the fourth part arranged on the leeward side, the third part arranged on the windward side, and the second gas distributor.   
     
     
         4 . The air-conditioner according to  claim 2 , comprising:
 a third heat exchanger comprising a fifth part and a sixth part connected in series;   a third gas-liquid two-phase distributor connected to the fifth part on a side opposite to a side where the sixth part is connected;   a third gas distributor connected to the sixth part on a side opposite to a side where the fifth part is connected;   a third flow path comprising a portion through which the third gas-liquid two-phase distributor, the fifth part, the sixth part, and the third gas distributor are sequentially connected; and   an expansion valve arranged between the outdoor unit and the indoor unit in the refrigeration cycle circuit, wherein   the third flow path where the third heat exchanger is arranged is connected in series between the expansion valve and the first flow path and the second flow path connected in parallel,   with respect to the direction of passage of air that passes through the third heat exchanger,
 the fifth part is arranged on the windward side, and 
 the sixth part is arranged on the leeward side, 
   the number of refrigerant flow paths in the first heat exchanger where the non-azeotropic refrigerant mixture flows is a first number of refrigerant flow paths,   the number of refrigerant flow paths in the second heat exchanger where the non-azeotropic refrigerant mixture flows is a second number of refrigerant flow paths,   the number of refrigerant flow paths in the third heat exchanger where the non-azeotropic refrigerant mixture flows is a third number of refrigerant flow paths,   the third number of refrigerant flow paths is smaller than the first number of refrigerant flow paths and the second number of refrigerant flow paths, and   the third heat exchanger is arranged below the first heat exchanger and the second heat exchanger.   
     
     
         5 . The air-conditioner according to  claim 4 , wherein
 in the first operation mode, the non-azeotropic refrigerant mixture flows from the first flow path and the second flow path connected in parallel to the third flow path, and   in the third flow path, the non-azeotropic refrigerant mixture flows as a counterflow that sequentially flows through the third gas distributor, the sixth part, the fifth part, and the third gas-liquid two-phase distributor.   
     
     
         6 . The air-conditioner according to  claim 4 , wherein
 in the second operation mode, the non-azeotropic refrigerant mixture flows from the third flow path to the first flow path and the second flow path connected in parallel, and   in the third flow path, the non-azeotropic refrigerant mixture flows as a parallel flow that sequentially flows through the third gas-liquid two-phase distributor, the fifth part, the sixth part, and the third gas distributor.   
     
     
         7 . The air-conditioner according to  claim 1 , comprising:
 a first flow rate regulation valve arranged in a portion of the first flow path located opposite to the side where the first part is connected, with respect to the first gas-liquid two-phase distributor; and   a second flow rate regulation valve arranged in a portion of the second flow path located opposite to the side where the fourth part is connected, with respect to the second gas-liquid two-phase distributor.   
     
     
         8 . The air-conditioner according to  claim 7 , wherein
 at least one of a temperature sensor to measure a temperature of the non-azeotropic refrigerant mixture and a pressure sensor to measure a pressure of the non-azeotropic refrigerant mixture is provided in each of;   the portion of the first flow path opposite to the side where the first part is connected, with respect to the first gas-liquid two-phase distributor,   a portion of the first flow path opposite to the side where the second part is connected, with respect to the first gas distributor,   the portion of the second flow path opposite to the side where the fourth part is connected, with respect to the second gas-liquid two-phase distributor, and   a portion of the second flow path opposite to the side where the third part is connected, with respect to the second gas distributor.   
     
     
         9 . The air-conditioner according to  claim 1 , wherein
 one of a T-shaped branch portion and a Y-shaped branch portion is arranged in a portion where the first flow path and the second flow path are connected in parallel with respect to the refrigeration cycle circuit.