Indoor unit for air conditioner

Abstract

An indoor unit for air conditioners includes a main body and a panel frame coupled to the main body. The main body includes a blower fan configured to generate air flow, and a heat exchanger configured to exchange heat with the air. The panel frame includes an air inlet forming an air supply passage to the main body and an air outlet forming a discharge passage for air discharged from the main body. A plurality of openings are provided in the panel frame. The plurality of openings are configured to be opened and closed by a plurality of doors. An electrical part comprising circuitry is placed on at least one of the plurality of openings.

What is claimed is: 
     
         1 . An indoor unit for air conditioners, the indoor unit comprising:
 a main body including a blower fan configured to generate air flow, and a heat exchanger configured to exchange heat with the air;   a panel frame assembled to the main body and including an air inlet forming an air supply passage to the main body and an air outlet forming a discharge passage for air discharged from the main body;   a plurality of openings formed in the panel frame; and   a plurality of doors configured to open and/or close the plurality of openings,   wherein an electrical part comprising circuitry is arranged on at least one of the plurality of doors.   
     
     
         2 . The indoor unit of  claim 1 , wherein the electrical part is disposed on an inner side of the at least one of the plurality of doors. 
     
     
         3 . The indoor unit of  claim 2 , further comprising a cover coupled to the at least one of the plurality of doors and covering the electrical part. 
     
     
         4 . The indoor unit of  claim 1 , further comprising a plurality of hanger parts comprising a hanger provided on the main body and configured to be coupled with anchor bolts to install the main body on a ceiling,
 wherein the plurality of openings include a plurality of hanger openings aligned with the plurality of hanger parts.   
     
     
         5 . The indoor unit of  claim 1 , wherein at least one of the plurality of doors is coupled to the panel frame to be pivotable to a position that opens and closes the corresponding opening among the plurality of openings. 
     
     
         6 . The indoor unit of  claim 5 , wherein the door is pivotably supported on the panel frame such that the door is configured to be opened to the outside, which is an opposite side of the main body with respect to the panel frame. 
     
     
         7 . The indoor unit of  claim 5 , further comprising elastic locking members comprising an elastic material provided on the panel frame and configured to elastically lock the door to a position where the corresponding opening among the plurality of openings is closed. 
     
     
         8 . The indoor unit of  claim 5 , further comprising:
 a first hinge provided on the panel frame;   a second hinge provided on the door and pivotably coupled to the first hinge; and   a hinge cover coupled to the door and configured to cover the first hinge and second hinge.   
     
     
         9 . The indoor unit of  claim 5 , further comprising:
 a hinge hole provided on the panel frame; and   a hinge shaft rotatably inserted into the hinge hole and provided with an elastically deformable separation prevention elastic piece configured to be elastically deformable in a radial direction at an end of the hinge shaft protruding from the hinge hole.   
     
     
         10 . The indoor unit of  claim 1 , wherein at least one of the doors among the plurality of doors is coupled to the panel frame and configured to be detachable to the outside, which is the opposite side of the main body with respect to the panel frame. 
     
     
         11 . The indoor unit of  claim 10 , further comprising elastic locking members comprising an elastic material configured to elastically lock the door to a position where the corresponding opening among the plurality of openings is closed. 
     
     
         12 . The indoor unit of  claim 1 , further comprising:
 a blade provided on the air outlet and configured to control a vertical direction of the discharged air; and   a blade drive motor configured to drive the blade,   wherein   the plurality of openings includes at least one motor opening,   the plurality of doors include at least one motor housing detachably coupled to the panel frame and configured to open and close the at least one motor opening, and   the blade drive motor is coupled to the at least one motor housing.   
     
     
         13 . The indoor unit of  claim 1 , further comprising:
 a grille panel detachably coupled to an outer portion of the panel frame and configured to cover the air inlet and provided with a grille hole communicating with the air inlet;   a blade provided on the air outlet and configured to control a vertical direction of the discharged air; and   an intermediate panel covering the outer portion of the panel frame excluding the grille panel and the blade, and   wherein each of the grille panel and the intermediate panel are configured to cover at least one of the plurality of doors.   
     
     
         14 . An indoor unit for air conditioners, the indoor unit comprising:
 a main body including a blower fan configured to generate air flow, a heat exchanger configured to exchange heat with the air, and a plurality of hanger parts comprising a hanger to which anchor bolts are configured to be coupled;   a panel frame assembled to the main body and including an air inlet forming an air supply passage to the main body and an air outlet forming a discharge passage for air discharged from the main body;   a plurality of hanger openings configured to to be opened in the panel frame so that the plurality of hanger parts are accessible; and   a plurality of hanger doors supported on the panel frame and configured to be slidable to a position that closes the plurality of hanger openings and a position that opens the plurality of hanger openings.   
     
     
         15 . The indoor unit of  claim 14 , further comprising:
 at least one motor opening provided on the panel frame;   at least one motor housing detachably coupled to the panel frame and configured to open and close the at least one motor opening;   a blade provided on the air outlet and configured to control a vertical direction of discharged air; and   a blade drive motor configured to drive the blade,   wherein the blade drive motor is coupled to the at least one motor housing.