Heat-source-side unit and air-conditioning apparatus

Abstract

A heat-source-side unit includes a body case having an air inlet and an air outlet, a heat exchanger contained in the body case and disposed to an air passage between the air inlet and the air outlet, and a damper disposed above the heat exchanger and configured to open and close the air passage. The damper is closed in a defrosting operation that removes frost on the heat exchanger.

1 . A heat-source-side unit comprising:
 a body case having an air inlet and an air outlet;   a heat exchanger contained in the body case and disposed to an air passage between the air inlet and the air outlet; and   a damper disposed above the heat exchanger and configured to open and close the air passage,   wherein the damper is closed in a defrosting operation that removes frost on the heat exchanger.   
     
     
         2 . The heat-source-side unit of  claim 1 , wherein the air outlet is formed above the air inlet and the heat exchanger. 
     
     
         3 . The heat-source-side unit of  claim 1 , wherein the air inlet is formed below the heat exchanger. 
     
     
         4 . The heat-source-side unit of  claim 1 , further comprising an air-sending device configured to generate an airflow such that air outside the body case is taken in through the air inlet, passed through the heat exchanger, and blown out through the air outlet,
 wherein the air-sending device is stopped in the defrosting operation.   
     
     
         5 . The heat-source-side unit of  claim 4 , wherein the air-sending device is disposed between the heat exchanger and the damper. 
     
     
         6 . The heat-source-side unit of  claim 1 , wherein the body case includes an outlet-side hood configured to cover an upper part of the body case; and
 the air outlet is formed on a side of the outlet-side hood.   
     
     
         7 . The heat-source-side unit of  claim 1 , wherein the damper is disposed to the air outlet. 
     
     
         8 . The heat-source-side unit of  claim 1 , wherein the body case includes an inlet-side hood protruding from a side face of the body case; and
 the air inlet is formed in an opening on a lower side of the inlet-side hood.   
     
     
         9 . The heat-source-side unit  claim 1 , wherein the heat exchanger includes a plurality of heat exchangers vertically arranged;
 a valve is connected to each of the plurality of heat exchangers, the valve being configured to regulate a flow rate of refrigerant discharged from a compressor and flowing into each of the plurality of heat exchangers; and   in the defrosting operation, the valve is adjusted to allow more refrigerant discharged from the compressor to flow into a second heat exchanger of the plurality of heat exchangers than into a first heat exchanger of the plurality of heat exchangers, the second heat exchanger being disposed below the first heat exchanger.   
     
     
         10 . An air-conditioning apparatus comprising a plurality of heat-source-side units of  claim 1 .