Window air conditioner

Abstract

A window air conditioner includes an outdoor housing, a motor bracket, and an electric control box. The length direction, width and the depth directions of the electric control box are aligned with the width direction, height and length directions of the outdoor housing, respectively. The electric control box includes an inner box body, a circuit board, and an outer box body. The outer box body covers the periphery of the inner box body, with a side surface of the outer box body facing the indoor portion being a closed surface, and an another side surface facing the side surface of the outer box body having an opening for a heat sink to pass through, while an remaining area of the another side surface is also a closed surface. An air outlet gap is formed on the side of the outer box body close to the outdoor housing.

What is claimed is: 
     
         1 . A window air conditioner comprising: 
       an outdoor housing; 
       a motor bracket disposed inside the outdoor housing; and 
       an electric control box mounted on the motor bracket;
 wherein a length direction of the electric control box is aligned with a width direction of the outdoor housing, and a width direction of the electric control box is aligned with a height direction of the outdoor housing, and a depth direction of the electric control box is aligned with a length direction of the outdoor housing; 
 wherein the electric control box comprises: 
 an inner box body; 
 a circuit board disposed inside the inner box body, with a heat sink mounted on the circuit board; and 
 an outer box body covering a periphery of the inner box body, wherein a side surface of the outer box body facing indoors is a closed surface, an another side surface facing the side surface of the outer box body has an opening for the heat sink to pass through, an remaining area of the another side surface is a closed surface, and an air outlet gap is formed on a side of the outer box body close to the outdoor housing along the height direction of the outdoor housing. 
 
     
     
         2 . The window air conditioner according to  claim 1 , wherein the outer box body comprises a first sub-outer box body covering the side surface and a second sub-outer box body covering the another side surface, and the first sub-outer box body and the second sub-outer box body covering the periphery of the inner box body;
 wherein the air outlet gap is formed at relative splices of the first sub-outer box body and the second sub-outer box body.   
     
     
         3 . The window air conditioner according to  claim 2 , wherein at least one air inlet hole is opened at a bottom of the outer box body, wherein a gap is formed between the outer box body and the inner box body, wherein a plurality of side air inlet holes are provided on either of one of a surface of the inner box body facing the side surface of the outer box body or a surface of the inner box body facing the another side surface of the outer box body, and a plurality of side heat dissipation holes are provided on the other one of the surface of the inner box body facing the side surface of the outer box body and the surface of the inner box body facing the another side surface of the outer box body, wherein external air enters the gap between the outer box body and the inner box body through the at least one air inlet hole, and the external air in the gap flows into the inner box body through the plurality of side air inlet holes, and heated air generated after heat exchange flows to the gap through the plurality of side heat dissipation holes. 
     
     
         4 . The window air conditioner according to  claim 3 , wherein a bottom surface of the inner box body facing the motor bracket is provided with a bottom air inlet hole, allowing the external air to enter the inner box body from the bottom air inlet hole. 
     
     
         5 . The window air conditioner according to  claim 3 , wherein side water shield ribs are provided at a periphery of the plurality of side air inlet holes, and the side water shield ribs protrude from a plane of the plurality of side air inlet holes. 
     
     
         6 . The window air conditioner according to  claim 5 , wherein the surface of the inner box body facing the side surface of the outer box body is a first surface, and the surface of the inner box body facing the another side surface of the outer box body is a second surface;
 wherein the first surface is provided with the plurality of side air inlet holes, a zone of the first surface where the plurality of side air inlet holes are located is an air inlet zone, and the side water shield ribs are distributed on both sides of the air inlet zone along a length direction of the inner box body and at top of the air inlet zone.   
     
     
         7 . The window air conditioner according to  claim 3 , wherein side water shield ribs are provided at a periphery of the plurality of side heat dissipation holes on the inner box body, and the side water shield ribs protrude from a plane of the plurality of side heat dissipation holes. 
     
     
         8 . The window air conditioner according to  claim 7 , wherein the surface of the inner box body facing the side surface of the outer box body is a first surface, and the surface of the inner box body facing the another side surface of the outer box body is a second surface;
 wherein the second surface is provided with the plurality of side heat dissipation holes, a zone of the second surface where the plurality of side heat dissipation holes are located is a heat dissipation zone, and the side water shield ribs are distributed on both sides of the heat dissipation zone along a length direction of the inner box body and at top of the heat dissipation zone.   
     
     
         9 . The window air conditioner according to  claim 1 , wherein a top surface of the inner box body is provided with a top heat dissipation hole, wherein a periphery of the top heat dissipation hole is provided with a top water shield rib, and a height of the top water shield rib is higher than the height of a plane of the top heat dissipation hole. 
     
     
         10 . The window air conditioner according to  claim 9 , wherein the top surface of the inner box body is further provided with a top blocking rib, the top blocking rib being arranged around the top water shield rib and spaced apart from the top water shield rib, and a height by which the top blocking rib protrudes from the top surface of the inner box body is greater than that of the top water shield rib. 
     
     
         11 . The window air conditioner according to  claim 1 , wherein a surface of the circuit board facing the another side surface of the outer box body is a back side of the circuit board, the heat sink is mounted on the back side of the circuit board, and a sealing gasket is provided at a periphery of the heat sink, wherein the sealing gasket is located between a mounting plate of the heat sink and the inner box body, the sealing gasket is fastened to the inner box body at corners of the sealing gasket with fasteners, and the fasteners are installed from front side and the back side of the circuit board, respcetively. 
     
     
         12 . The window air conditioner according to  claim 11 , wherein the sealing gasket is connected by four fasteners at four corners of the sealing gasket, wherein the circuit board is provided with two avoidance holes, mounting heads of two of the four fasteners are installed in the two avoidance holes, and the mounting heads of the other two of the four fasteners are installed on an outer side of the inner box body where the back side of the circuit board is located. 
     
     
         13 . The window air conditioner according to  claim 1 , further comprising an outdoor heat exchanger, wherein a blank area is reserved between the electric control box and the outdoor heat exchanger. 
     
     
         14 . The window air conditioner according to  claim 1 , wherein the outer box body is a heat-dissipating metal sheet outer box body. 
     
     
         15 . The window air conditioner according to  claim 1 , wherein the outdoor housing is provided with a through hole on a side facing indoors, and air inlet grilles are provided on at least one of top and both sides along the width direction of the outdoor housing, allowing external air to enter the electric control box for heat exchange through the air inlet grilles and the through hole, and for heat exchange with the outer box body of the electric control box. 
     
     
         16 . The window air conditioner according to  claim 15 , wherein the outer box body further comprises two lateral surfaces connected to the side surface of the outer box body, the two lateral surfaces being closed surfaces. 
     
     
         17 . The window air conditioner according to  claim 1 , further comprising:
 an indoor portion; and   an outdoor portion comprising an outdoor air duct assembly, the outdoor air duct assembly being provided with a vent, the motor bracket being disposed on an air outlet side of the outdoor air duct assembly, and the electric control box facing the vent.   
     
     
         18 . The window air conditioner according to  claim 17 , wherein at least one extension arm protrudes from a sidewall of the outdoor air duct assembly facing the indoor portion, the at least one extension arm is connected to the electric control box, and the at least one extension arm and the motor bracket jointly support the electric control box. 
     
     
         19 . The window air conditioner according to  claim 18 , wherein the motor bracket comprises:
 a base provided with a mounting hole, an outdoor motor being mounted in the mounting hole; and   a plurality of connecting arms connected to the base and arranged at intervals along a circumferential direction of the base, the plurality of connecting arms being connected to the outdoor air duct assembly, and the electric control box being mounted to the base and at least one of the plurality of connecting arms.   
     
     
         20 . The window air conditioner according to  claim 19 , wherein a top surface of the base is configured as a supporting plane, and the electric control box is in contact with the supporting plane.