Indoor unit of hvac apparatus, and hvac apparatus

Abstract

An indoor unit includes a cabinet including a shell formed with an accommodation chamber. The shell includes a bottom plate forming a bottom surface of the accommodation chamber and a top plate forming a top surface of the accommodation chamber. The indoor unit further includes a heat exchange assembly arranged inside the accommodation chamber and a refrigerant detection device arranged inside the accommodation chamber and configured to detect refrigerant that leaks from the heat exchange assembly. A distance between the refrigerant detection device and the bottom plate is smaller than or equal to ½ of a distance between the bottom plate and the top plate.

1 . An indoor unit comprising:
 a cabinet, including a shell formed with an accommodation chamber, the shell including:
 a bottom plate forming a bottom surface of the accommodation chamber; and 
 a top plate forming a top surface of the accommodation chamber; 
   a heat exchange assembly, arranged inside the accommodation chamber; and   a refrigerant detection device, arranged inside the accommodation chamber and configured to detect refrigerant that leaks from the heat exchange assembly;   wherein a distance between the refrigerant detection device and the bottom plate is smaller than or equal to ½ of a distance between the bottom plate and the top plate.   
     
     
         2 . The indoor unit according to  claim 1 , wherein the distance between the refrigerant detection device and the bottom plate is smaller than or equal to 50 mm. 
     
     
         3 . The indoor unit according to  claim 2 , wherein the distance between the refrigerant detection device and the bottom plate is larger than or equal to 15 mm and smaller than or equal to 25 mm. 
     
     
         4 . The indoor unit according to  claim 1 , wherein:
 the shell includes an air outlet and an air inlet spaced apart from each other and communicated with the accommodation chamber;   the heat exchange assembly includes a heat exchanger arranged inside the accommodation chamber and located between the air outlet and the air inlet; and   the refrigerant detection device is arranged adjacent to the heat exchanger.   
     
     
         5 . The indoor unit according to  claim 4 , wherein the refrigerant detection device is arranged between the heat exchanger and the air outlet. 
     
     
         6 . The indoor unit according to  claim 4 , wherein:
 the heat exchanger includes two heat exchange tubes connected to each other;   at least one of a welding connection part or an elbow part is provided between the two heat exchange tubes; and   the refrigerant detection device is arranged at a position near the at least one of the welding connection part or the elbow part.   
     
     
         7 . The indoor unit according to  claim 4 , wherein a minimum distance between the refrigerant detection device and the heat exchanger is smaller than or equal to 50 mm. 
     
     
         8 . The indoor unit according to  claim 1 , further comprising:
 a connection bracket installed in the accommodation chamber;   wherein the refrigerant detection device is installed at the connection bracket.   
     
     
         9 . The indoor unit according to  claim 8 , wherein the shell further includes side plates intersecting with and connected to the bottom plate, and the connection bracket is fixedly connected to the side plates. 
     
     
         10 . The indoor unit according to  claim 9 , wherein the connection bracket includes a first installation plate and a second installation plate that intersect with each other, the first installation plate is fixedly connected to the refrigerant detection device, and the second installation plate is fixedly connected to the side plates. 
     
     
         11 . An HVAC apparatus comprising
 an indoor unit including:
 a cabinet, including a shell formed with an accommodation chamber, the shell including:
 a bottom plate forming a bottom surface of the accommodation chamber; and 
 a top plate forming a top surface of the accommodation chamber; 
 
 a heat exchange assembly, arranged inside the accommodation chamber; and 
 a refrigerant detection device, arranged inside the accommodation chamber and configured to detect refrigerant that leaks from the heat exchange assembly; 
   wherein a distance between the refrigerant detection device and the bottom plate is smaller than or equal to ½ of a distance between the bottom plate and the top plate.   
     
     
         12 . The HVAC apparatus according to  claim 11 , wherein the distance between the refrigerant detection device and the bottom plate is smaller than or equal to 50 mm. 
     
     
         13 . The HVAC apparatus according to  claim 12 , wherein the distance between the refrigerant detection device and the bottom plate is larger than or equal to 15 mm and smaller than or equal to 25 mm. 
     
     
         14 . The HVAC apparatus according to  claim 11 , wherein:
 the shell includes an air outlet and an air inlet spaced apart from each other and communicated with the accommodation chamber;   the heat exchange assembly includes a heat exchanger arranged inside the accommodation chamber and located between the air outlet and the air inlet; and   the refrigerant detection device is arranged adjacent to the heat exchanger.   
     
     
         15 . The HVAC apparatus according to  claim 14 , wherein the refrigerant detection device is arranged between the heat exchanger and the air outlet. 
     
     
         16 . The HVAC apparatus according to  claim 14 , wherein:
 the heat exchanger includes two heat exchange tubes connected to each other;   at least one of a welding connection part or an elbow part is provided between the two heat exchange tubes; and   the refrigerant detection device is arranged at a position near the at least one of the welding connection part or the elbow part.   
     
     
         17 . The HVAC apparatus according to  claim 14 , wherein a minimum distance between the refrigerant detection device and the heat exchanger is smaller than or equal to 50 mm. 
     
     
         18 . The HVAC apparatus according to  claim 11 , wherein:
 the indoor unit further includes a connection bracket installed in the accommodation chamber; and   the refrigerant detection device is installed at the connection bracket.   
     
     
         19 . The HVAC apparatus according to  claim 18 , wherein the shell further includes side plates intersecting with and connected to the bottom plate, and the connection bracket is fixedly connected to the side plates. 
     
     
         20 . The HVAC apparatus according to  claim 19 , wherein the connection bracket includes a first installation plate and a second installation plate that intersect with each other, the first installation plate is fixedly connected to the refrigerant detection device, and the second installation plate is fixedly connected to the side plates.