Air duct machine

Abstract

An air duct machine including a cabinet, an electric control box, a heat exchanger and a centrifugal fan; the electric control box, the heat exchanger and the centrifugal fan are all disposed inside the cabinet, one of side panels of the cabinet is provided with a return air vent and an air outlet, the electric control box is disposed close to the return air vent, the centrifugal fan is disposed close to the air outlet, and the heat exchanger is disposed between the electric control box and the centrifugal fan. This improves the selectivity and flexibility of installation of the air duct machine, and facilitates maintenance. The air duct machine can have an ultra-thin design when installed in the ceiling or wall, so that the installation space is reduced. Moreover, the airflow direction will not change due to the change of the installation method.

1 - 10 . (canceled) 
     
     
         11 . An air duct machine, comprising: a cabinet, an electric control box, a heat exchanger and a centrifugal fan;
 wherein the electric control box, the heat exchanger and the centrifugal fan are all disposed inside the cabinet, a side panel of the cabinet is provided with a return air vent and an air outlet, the electric control box is disposed close to the return air vent, the centrifugal fan is disposed close to the air outlet, and the heat exchanger is disposed between the electric control box and the centrifugal fan.   
     
     
         12 . The air duct machine according to  claim 11 , wherein the air outlet comprises a first air outlet and a second air outlet, the centrifugal fan comprises a first centrifugal fan and a second centrifugal fan, the first air outlet and the second air outlet are disposed on both sides of the return air vent respectively, the first centrifugal fan is disposed close to the first air outlet, and the second centrifugal fan is disposed close to the second air outlet. 
     
     
         13 . The air duct machine according to  claim 12 , wherein the heat exchanger comprises a first portion, a second portion, and a third portion connecting the first portion with the second portion, the first portion and the second portion are disposed on both sides of the electric control box respectively, and the first portion, the second portion, the third portion and the return air vent together form an accommodation space capable of accommodating the electric control box. 
     
     
         14 . The air duct machine according to  claim 13 , wherein the first portion and the third portion are disposed at a first included angle therebetween, the second portion and the third portion are disposed at a second included angle therebetween, and the degree of the first included angle is the same as the degree of the second included angle. 
     
     
         15 . The air duct machine according to  claim 13 , wherein the first portion and the third portion are integrally provided. 
     
     
         16 . The air duct machine according to  claim 13 , wherein the second portion and the third portion are integrally provided. 
     
     
         17 . The air duct machine according to  claim 11 , wherein a water receiving tray is provided in the cabinet at the bottom of the heat exchanger. 
     
     
         18 . The air duct machine according to  claim 17 , wherein the water receiving tray is fixedly connected to an inner bottom wall of the cabinet. 
     
     
         19 . The air duct machine according to  claim 11 , wherein both the return air vent and the air outlet are disposed on a front side panel of the cabinet. 
     
     
         20 . The air duct machine according to  claim 11 , wherein the cabinet is a sheet metal structural member.