Air conditioning unit

Abstract

An air conditioning unit includes: an electric component unit; a fan; a first heat exchanger that exchanges heat between a first refrigerant that is combustible and air caused to flow through the first heat exchanger by the fan; a second heat exchanger that exchanges heat between a second refrigerant that is non-combustible and air caused to flow through the second heat exchanger by the fan; a casing that accommodates the electric component unit, the first heat exchanger, the second heat exchanger, and the fan; and a partition plate that partitions an inside of the casing into: a first chamber in which the first heat exchanger, the second heat exchanger, and the fan are disposed, and a second chamber in which the electric component unit is disposed. The first heat exchanger comprises brazed portions.

1 . An air conditioning unit comprising:
 an electric component unit;   a fan;   a first heat exchanger that exchanges heat between a first refrigerant that is combustible and air caused to flow through the first heat exchanger by the fan;   a second heat exchanger that exchanges heat between a second refrigerant that is non-combustible and air caused to flow through the second heat exchanger by the fan;   a casing that accommodates the electric component unit, the first heat exchanger, the second heat exchanger, and the fan; and   a partition plate that partitions an inside of the casing into:
 a first chamber in which the first heat exchanger, the second heat exchanger, and the fan are disposed, and 
 a second chamber in which the electric component unit is disposed, wherein 
   the first heat exchanger comprises brazed portions, and   the partition plate has a communication hole through which the first chamber and the second chamber communicate above an uppermost one of the brazed portions.   
     
     
         2 . The air conditioning unit according to  claim 1 , wherein the communication hole guides air around the electric component unit to the fan. 
     
     
         3 . The air conditioning unit according to  claim 1 , further comprising:
 a bell mouth disposed in the first chamber and comprising a cylindrical portion surrounding the fan, wherein   a lower end of the electric component unit is disposed above a lower end of the cylindrical portion.   
     
     
         4 . The air conditioning unit according to  claim 1 , wherein a lower end of the electric component unit is disposed above the uppermost one of the brazed portions. 
     
     
         5 . The air conditioning unit according to  claim 1 , wherein the first heat exchanger is disposed below the second heat exchanger. 
     
     
         6 . The air conditioning unit according to  claim 1 , further comprising:
 a first compressor that compresses the first refrigerant in the second chamber;   a second compressor that compresses the second refrigerant in the second chamber; and   a bell mouth disposed in the first chamber and comprising a cylindrical portion surrounding the fan, wherein   a terminal of the first compressor and a terminal of the second compressor are disposed above a lower end of the cylindrical portion.