Air-conditioning apparatus

Abstract

An air-conditioning apparatus includes: an outdoor unit including a compressor and an outdoor heat exchanger, and configured to generate cooling energy or heating energy; an indoor unit including an indoor heat exchanger, and configured to perform an air-conditioning operation with the cooling energy or the heating energy that is generated by the outdoor unit; a refrigerant pipe provided between the outdoor unit and the indoor unit, and forming a refrigerant circuit in which refrigerant circulates; and a shut-off valve provided at the refrigerant pipe, and configured to be closed when a refrigerant leak is detected. The shut-off valve includes a service port communicating with the refrigerant pipe.

1 . An air-conditioning apparatus comprising:
 an outdoor unit including a compressor and an outdoor heat exchanger, and configured to generate cooling energy or heating energy;   an indoor unit including an indoor heat exchanger, and configured to perform an air-conditioning operation with the cooling energy or the heating energy that is generated by the outdoor unit;   a refrigerant pipe provided between the outdoor unit and the indoor unit, and forming a refrigerant circuit in which refrigerant circulates;   a shut-off valve provided at the refrigerant pipe, and configured to be closed when a refrigerant leak is detected; and   a pressure sensor,   wherein the shut-off valve includes a service port communicating with the refrigerant pipe, and the pressure sensor is connected to the service port.   
     
     
         2 . The air-conditioning apparatus of  claim 1 , wherein
 the service port has a tip that is openable and closable and that allows the pressure sensor to be attached to and detached from the tip, and   the tip is opened when the pressure sensor is connected to the tip.   
     
     
         3 . The air-conditioning apparatus of  claim 1 , wherein
 the shut-off valve includes
 a block body including a flow passage that is formed therein to communicate with the refrigerant pipe, and 
 a valve body to cause the flow passage to be opened or closed, and 
   the service port is provided at the block body in such a manner as to communicate with the flow passage.   
     
     
         4 . The air-conditioning apparatus of  claim 1 , wherein
 the shut-off valve includes
 a block body including a flow passage that is formed in the block body to communicate with the refrigerant pipe, 
 a valve body configured to cause the flow passage to be opened or closed, and 
 a connection pipe connected to the flow passage and protruding from the block body, 
   the connection pipe is connected to the refrigerant pipe, and   the service port is provided at the connection pipe.   
     
     
         5 . The air-conditioning apparatus of  claim 1 , wherein
 a plurality of the shut-off valves are provided at the refrigerant pipe, and   the plurality of shut-off valves include
 an indoor-unit-side shut-off valve located closer to the indoor unit than to the outdoor unit, and 
 an outdoor-unit-side shut-off valve located closer to the outdoor unit than to the indoor unit. 
   
     
     
         6 . The air-conditioning apparatus of  claim 5 , wherein
 a plurality of the indoor-unit-side shut-off valves are provided,   the plurality of indoor-unit-side shut-off valves include
 an indoor-unit-side shut-off valve provided at part of the refrigerant pipe through which the refrigerant passes to flow into the indoor unit, and 
 an indoor-unit-side shut-off valve provided at part of the refrigerant pipe through which the refrigerant flows after flowing out from the indoor unit, 
   a plurality of the outdoor-unit-side shut-off valves are provided, and   the plurality of outdoor-unit-side shut-off valves include
 an outdoor-unit-side shut-off valve provided at part of the refrigerant pipe through which the refrigerant passes to flow into the outdoor unit, and 
   an outdoor-unit-side shut-off valve provided at part of the refrigerant pipe through which the refrigerant flows after flowing out from the outdoor unit.   
     
     
         7 . The air-conditioning apparatus of  claim 5 , wherein
 a plurality of the indoor units are provided,   a relay unit is provided between the outdoor unit and the plurality of indoor units, and is configured to switch a flow passage to be used in the refrigerant circuit between plural flow passages,   the outdoor unit, the relay unit, and the plurality of indoor units are connected by the refrigerant pipe,   each of a plurality of the indoor-unit-side shut-off valves is provided for an associated one of the plurality of indoor units, and   the indoor-unit-side shut-off valve is located closer to the associated indoor unit than to the relay unit.   
     
     
         8 . The air-conditioning apparatus of  claim 7 , wherein
 the plurality of shut-off valves include a relay-unit-side shut-off valve provided between the outdoor unit and the relay unit,   the relay-unit-side shut-off valve is located closer to the relay unit than to the outdoor unit, and   the outdoor-unit-side shut-off valve is located closer to the outdoor unit than to the relay unit.