Indoor unit of air conditioner

Abstract

The utility model discloses an indoor unit of an air conditioner, which belongs to the technical field of air conditioning of air conditioners and comprises a shell, a heat exchanger and an electric control board, the shell comprises a chassis and a panel positioned on the front side of the chassis, the heat exchanger is mounted on the chassis, the electric control board is positioned between the panel and the heat exchanger, and the shell further comprises a middle frame mounted on the chassis. The middle frame is located between the heat exchanger and the panel, a gap exists between the side, facing the heat exchanger, of the middle frame and the heat exchanger, a mounting cavity is formed in the side, facing the panel, of the middle frame, the electric control board is fixedly arranged in the mounting cavity, a cover plate is arranged at an opening of the mounting cavity in a matched mode, and the side edge of the cover plate is fixedly connected with the inner circumferential side of the mounting cavity. The air conditioner indoor unit solves the technical problems that an electric control box of an existing air conditioner indoor unit is installed on a heat exchanger, and an electric control board is prone to being affected by the working temperature of the heat exchanger to cause short circuit or overheating damage, the overall length of the air conditioner indoor unit is reduced, and the influence of the temperature of the heat exchanger on the electric control board during working is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning of air conditioners, in particular to an indoor unit of an air conditioner. Background Art

[0002] As people's requirements for quality of life increase, air conditioners have become important household appliances in their daily lives. Wall-mounted air conditioners have entered every household due to their small footprint, affordable price and energy saving. Existing wall-mounted air conditioners include air inlets, heat exchangers, fan motors, air outlets, control panels, electric control panels and drainage systems. Specifically, the air inlet at the front end of the indoor unit inhales indoor air, and the inhaled indoor air exchanges heat with the heat exchanger through the heat exchange duct. Then the fan motor works to blow the air that has undergone heat exchange into the room. At the same time, the electric control box and the control panel work in coordination to realize the interaction between people and machines. The drainage system collects condensed water and discharges it to the outside. How to keep the indoor unit of the air conditioner small while ensuring that the electric control panel is not affected by the operation of the heat exchanger has become a difficult problem.

[0003] The utility model of the existing wall-mounted air conditioner indoor unit with announcement number CN215809192U discloses an electric control component and a wall-mounted air conditioner, an electric control box, a mounting structure is provided on the electric control box, the mounting structure is used to connect with the heat exchanger of the wall-mounted air conditioner, so that the electric control component is fixed on the front side of the heat exchanger, the electric control box is formed with a mounting cavity, and also includes an electric control board, which is arranged in the mounting cavity. In this case, the electric control box is mounted on the heat exchanger, and the electric control board inside the electric control box is easily affected by the temperature of the heat exchanger. Its working state and service life are affected. During the cooling process, the surface temperature of the heat exchanger of the indoor unit is lower than the indoor air temperature, and at this time, the moisture in the air in the electric control box may be affected by the heat exchanger and condense into liquid water when it is cold, causing a short circuit; and during the heating process, the surface temperature of the heat exchanger of the indoor unit is higher than the indoor air temperature, and the electric control box is directly in contact with the heat exchanger, which may cause the electric control box to have poor heat dissipation, and the electric control board inside the electric control box is damaged by the high temperature. Utility Model Content

[0004] In order to solve the technical problem that the electric control box of the existing air-conditioning indoor unit is installed on the heat exchanger, and the electric control board is easily affected by the working temperature of the heat exchanger and causes short circuit or overheating damage, the utility model provides an air-conditioning indoor unit which can reduce the influence of the heat exchanger temperature on the electric control board when it is working.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The indoor unit of the air conditioner comprises a shell, a heat exchanger and an electric control board, wherein the shell comprises a chassis and a panel located on the front side of the chassis, the heat exchanger is mounted on the chassis, the electric control board is located between the panel and the heat exchanger, the shell further comprises a middle frame mounted on the chassis, the middle frame is located between the heat exchanger and the panel, a gap exists between the side of the middle frame facing the heat exchanger and the heat exchanger, an installation cavity is arranged on the side of the middle frame facing the panel, the electric control board is fixedly arranged in the installation cavity, a cover plate is arranged at the opening of the installation cavity, and a side edge of the cover plate is fixedly connected to the inner circumference of the installation cavity.

[0007] Furthermore, a mounting column is vertically arranged at the bottom of the mounting cavity, a threaded hole is provided at one end of the mounting column facing the cover plate, a screw through hole is also provided at the corresponding cover plate, a fixing screw passes through the screw through hole and is threadedly connected to the mounting column, and the side edge of the cover plate is detachably engaged with the inner circumference of the mounting cavity.

[0008] Furthermore, a protrusion is arranged on the side of the cover plate, and a groove is correspondingly arranged on the inner circumference of the installation cavity, and the protrusion on the side of the cover plate is engaged and connected with the groove on the inner circumference of the installation cavity.

[0009] Furthermore, a plurality of grid-type air inlets are arranged on the top of the middle frame.

[0010] Furthermore, the air inlet is equipped with an air-conditioning air inlet grille.

[0011] Furthermore, a gap between a corresponding position of the installation cavity on the side of the middle frame facing the heat exchanger and the heat exchanger is greater than or equal to 10 mm.

[0012] Furthermore, the electric control board is fixed in the installation cavity by screws.

[0013] Furthermore, a smooth heat exchange air duct is formed between the middle frame and the chassis.

[0014] The beneficial effects of the utility model are:

[0015] By setting the middle frame between the heat exchanger and the panel, there is a gap between the side of the middle frame facing the heat exchanger and the heat exchanger, and setting an installation cavity on the side of the middle frame facing the panel, the electric control board is set in the installation cavity, and a cover plate is provided at the opening of the installation cavity, and the cover plate is fixedly connected to the inner circumference of the installation cavity. In this design, the overall length of the air conditioner indoor unit is reduced, and the electric control board is separated from the heat exchanger. The electric control board is not easily affected by the temperature of the heat exchanger, which ensures the safety of the air conditioner indoor unit and the service life of the electric control board. An installation cavity and a matching cover plate are set on the middle frame, which have a protective effect on the electric control board. At the same time, the panel is opened and the cover plate is removed, and the electric control board can be repaired, which is more convenient for maintenance. A mounting column is set at the bottom of the installation cavity, and a screw through hole is opened corresponding to the cover plate. The fixing screw passes through the screw through hole and is threadedly connected with the mounting column. The mounting column has a limiting support function for the cover plate, providing installation space for the electric control board. At the same time, the side of the cover plate is detachably engaged with the inner circumference of the installation cavity, which ensures easy removal and installation stability. A plurality of grid-type air inlets are arranged on the top of the middle frame, which can support the installation of the air inlet grille of the air conditioner while ensuring that the larger grid-type air inlet is designed to inhale air, thereby improving the heat exchange efficiency of the indoor unit of the air conditioner. The gap between the corresponding position of the installation cavity on the side of the middle frame facing the heat exchanger and the heat exchanger is greater than or equal to 10 mm. Such a design ensures that the electric control board in the installation cavity is at a safe distance from the heat exchanger and is not easily affected by the temperature of the heat exchanger. A smooth and regular heat exchange air duct is formed between the middle frame and the chassis. The comparative document sets a mounting structure at the bottom of the electric control box, and installs it on the heat exchanger through the mounting structure. Such a design affects the smoothness of the air entering the grid-type air inlet flowing in the heat exchange air duct. The electric control box blocks the flow of air in the heat exchange air duct, while the smooth and regular heat exchange air duct improves the smoothness of the air flowing in the heat exchange air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural explosion diagram of the indoor unit of the air conditioner of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the middle frame and the electric control panel of the indoor unit of the air conditioner of the utility model;

[0018] Figure 3 yes Figure 2 A partial enlarged view of A in FIG.

[0019] Marked in the figure are, 1-chassis, 2-heat exchanger, 3-air conditioning air inlet grille, 4-middle frame, 40-installation cavity, 41-groove, 42-installation column, 43-grid type air inlet, 5-electric control board, 6-cover plate, 61-protrusion, 62-screw hole, 63-fixing screw, 7-panel. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clearly expressed, the present invention is further described below in conjunction with the accompanying drawings.

[0021] First of all, it needs to be stated that the technical solutions of the embodiments of the present application are clearly and completely described. The described embodiments are part of the embodiments of the present application, rather than limitations of the present utility model. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present application.

[0022] In the description of the present invention, it is necessary to understand that the orientation or position relationship indicated by the terms "up", "down", "left", "right", "inside", "outside", "axial" or "radial" is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, and is not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0023] It should be noted that, in the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection: it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Refer to Figures 1 to 3 As shown, the utility model provides an indoor unit of an air conditioner.

[0025] The air conditioner indoor unit includes a shell, a heat exchanger 2 and an electric control board 5. The shell includes a chassis 1 and a panel 7 located on the front side of the chassis 1. The heat exchanger 2 is installed on the chassis 1, and the electric control board 5 is located between the panel 7 and the heat exchanger 2. The shell also includes a middle frame 4 installed on the chassis 1, and the middle frame 4 is located between the heat exchanger 2 and the panel 7. There is a gap between the side of the middle frame 4 facing the heat exchanger 2 and the heat exchanger 2. The side of the middle frame 4 facing the panel 7 is provided with an installation cavity 40, and the electric control board 5 is fixedly arranged in the installation cavity 40. The opening of the installation cavity 40 is provided with a cover plate 6, and the side of the cover plate 6 is fixedly connected to the inner circumference of the installation cavity 40.

[0026] In the embodiment of the present scheme, the housing includes a chassis 1 and a panel 7 located on the front side of the chassis 1. In the embodiment of the present utility model, there is no specific restriction on the shape and material of the housing, for example, it can be a combination of a cuboid, a cylinder or a conventional shape, and the material can be plastic, etc. The bottom surface of the chassis 1 has a mounting structure for mounting and fixing with a wall, that is, a wall-mounted air conditioner. The mounting structure is specifically to open a certain number of mounting holes on the chassis 1, and corresponding mounting holes are opened on the wall, and the chassis 1 is fixedly connected to the wall by expansion bolts. The panel 7 is located on the front side of the chassis 1, and a middle frame 4 is arranged between the panel 7 and the chassis 1. The middle frame 4 is mounted on the chassis 1, and the panel 7 is mounted on the middle frame 4. In this arrangement, a heat exchange air duct is formed between the middle frame 4 and the chassis 1, and the heat exchanger 2 is mounted on the chassis 1 and is in the heat exchange air duct. In order to ensure that the electric control board 5 is isolated from the heat exchanger 2 and reduce the influence of the temperature of the heat exchanger 2 on the electric control board 5, an installation cavity 40 is set on the side of the middle frame 4 facing the panel 7, and the electric control board 5 is installed in the installation cavity 40. There is a gap between the side of the middle frame 4 facing the heat exchanger 2 and the heat exchanger 2, which ensures that the electric control board 5 does not conduct heat with the heat exchanger 2 through metal. The middle gap is a heat exchange air duct, and the internal air quickly circulates in the heat exchange air duct to prevent the electric control board 5 from being overcooled or overheated. In addition, after the electric control board 5 is fixed to the inner circumference of the installation cavity 40, a cover plate 6 is provided at the open part of the installation cavity 40, and the side of the cover plate 6 is fixedly connected to the inner circumference of the installation cavity 40. The position of the cover plate 6 and the installation cavity 40 can protect the electric control board 5, provide a stable and comfortable working environment for the electric control board 5, and improve the service life of the air conditioner indoor unit. With such a design, the electric control board 5 is installed in the installation cavity 40 on the middle frame 4, and the middle frame 4 is located between the panel 7 and the heat exchanger 2, which reduces the length dimension of the air-conditioning indoor unit, makes the structure of the air-conditioning indoor unit more compact, occupies less space, is more in line with the public's preference, and reduces the production and transportation costs; at the same time, it ensures that the electric control board 5 is separated from the heat exchanger 2, and the electric control board 5 is not easily affected by the temperature of the heat exchanger 2, thereby improving the safety of the air-conditioning indoor unit and the service life of the electric control board 5. An installation cavity 40 and a matching cover plate 6 are provided on the middle frame 4, which have a protective effect on the electric control board 5. At the same time, the panel 7 is opened, and the cover plate 6 is removed, so that the electric control board 5 can be repaired, and the repair is more convenient.

[0027] In the embodiment of the present scheme, for the installation and fixing of the cover plate 6 and the installation cavity 40, preferably, a mounting column 42 is vertically arranged at the bottom of the installation cavity 40, a threaded hole is provided at one end of the mounting column 42 toward the cover plate 6, a screw through hole 62 is also provided at the corresponding cover plate 6, a fixing screw 63 passes through the screw through hole 62 and is threadedly connected with the mounting column 42, and the side of the cover plate 6 is detachably engaged with the inner circumference of the installation cavity 40. The arrangement of the mounting column 42 facilitates the installation, positioning and supporting of the cover plate 6, and at the same time, the side of the cover plate 6 is detachably engaged with the inner circumference of the installation cavity 40, ensuring the convenience and stability of the installation of the side of the cover plate 6 and the inner circumference of the installation cavity 40. Of course, the mounting column 42 is not used, and a connecting portion is arranged on the side of the cover plate 6, and the connecting portion is fixedly connected with the circumference of the installation cavity 40 by screws, or the side of the cover plate 6 is detachably engaged with the inner circumference of the installation cavity 40 and fixed with screws, or other fixing methods. Regarding the detachable snap-fit ​​connection between the side of the cover plate 6 and the inner circumference of the installation cavity 40, it is preferred that a protrusion 61 is provided on the side of the cover plate 6, and a groove 41 is correspondingly provided on the inner circumference of the installation cavity 40, and the protrusion 61 on the side of the cover plate 6 is snap-fitted with the groove 41 on the inner circumference of the installation cavity 40; or a groove 41 is provided on the side of the cover plate 6, and a protrusion 61 is provided at a corresponding position on the inner circumference of the installation cavity 40, and the two are snap-fitted.

[0028] In the embodiment of the present scheme, a plurality of grid-type air inlets 43 are arranged at the top of the middle frame 4. The grid-type air inlet 43 runs through the top of the middle frame 4, ensuring that the indoor air can enter the heat exchange air duct through the air inlet, and then be discharged to the room through the fan of the air conditioner indoor unit, so as to realize the heat exchange of the indoor air. The design of this grid-type air inlet 43 can support the installation of the air conditioner air inlet grille 3 while ensuring that the larger grid-type air inlet 43 is designed to inhale air, thereby improving the heat exchange efficiency of the air conditioner indoor unit. In order to ensure that the incoming air does not bring in impurities into the air conditioner, it is necessary to set an air conditioner air inlet grille 3 for filtering air at the grid-type air inlet 43, that is, the grid-type air inlet 43 is installed with the air conditioner air inlet grille 3, and the air inlet grille 3 completely covers the grid-type air inlet 43.

[0029] In the embodiment of the present solution, the gap between the corresponding position of the installation cavity 40 on the side of the middle frame 4 facing the heat exchanger 2 and the heat exchanger 2 is greater than or equal to 10 mm. Such a design ensures that the electric control board 5 in the installation cavity 40 is at a safe distance from the heat exchanger 2, and the heat exchanger 2 directly exchanges heat with the air in the heat exchange air duct, and the electric control board 5 is not easily affected by the temperature of the heat exchanger 2.

[0030] In the embodiment of the present scheme, the electric control board 5 is fixed in the installation cavity 40 by screws. The use of screws for fixing is more convenient and has low cost. Of course, the electric control board 5 can also be fixed in the installation cavity 40 by gluing, or by welding or riveting.

[0031] In the embodiment of the present solution, a smooth heat exchange air duct is formed between the middle frame 4 and the chassis 1. The reference document sets a mounting structure at the bottom of the electric control box, and installs it on the heat exchanger 2 through the mounting structure. Such a design affects the smoothness of the air entering the grid-type air inlet 43 in the heat exchange air duct, and the electric control box blocks the flow of air in the heat exchange air duct. The heat exchange air duct of the present solution is a smooth and regular heat exchange air duct, which will not affect the smoothness of the air flow in the heat exchange air duct.

Claims

1. An air conditioner indoor unit, comprising a housing, a heat exchanger (2) and an electric control panel (5), wherein the housing comprises a chassis (1) and a panel (7) located on the front side of the chassis (1), the heat exchanger (2) is mounted on the chassis (1), and the electric control panel (5) is located between the panel (7) and the heat exchanger (2), wherein: The housing further comprises a middle frame (4) mounted on the chassis (1), the middle frame (4) being located between the heat exchanger (2) and the panel (7), a gap being present between the side of the middle frame (4) facing the heat exchanger (2) and the heat exchanger (2), a mounting cavity (40) being provided on the side of the middle frame (4) facing the panel (7), the electric control board (5) being fixedly arranged in the mounting cavity (40), a cover plate (6) being provided at the opening of the mounting cavity (40), and a side edge of the cover plate (6) being fixedly connected to the inner circumference of the mounting cavity (40).

2. The air conditioner indoor unit according to claim 1, characterized in that: A mounting column (42) is vertically arranged at the bottom of the mounting cavity (40), a threaded hole is provided at one end of the mounting column (42) facing the cover plate (6), a screw through hole (62) is also provided on the corresponding cover plate (6), a fixing screw (63) passes through the screw through hole (62) and is threadedly connected to the mounting column (42), and the side of the cover plate (6) is detachably engaged with the inner circumference of the mounting cavity (40).

3. The air conditioner indoor unit according to claim 2, characterized in that: A protrusion (61) is arranged on the side of the cover plate (6), and a groove (41) is correspondingly arranged on the inner peripheral side of the installation cavity (40); the protrusion (61) on the side of the cover plate (6) is snap-fitted and connected with the groove (41) on the inner peripheral side of the installation cavity (40).

4. The air conditioner indoor unit according to claim 1, characterized in that: A plurality of grid-type air inlets (43) are arranged on the top of the middle frame (4).

5. The air conditioner indoor unit according to claim 4, characterized in that: The air inlet is equipped with an air-conditioning air inlet grille (3).

6. The air conditioner indoor unit according to claim 1, characterized in that: The gap between the corresponding position of the installation cavity (40) on the side of the middle frame (4) facing the heat exchanger (2) and the heat exchanger (2) is greater than or equal to 10 mm.

7. The air conditioner indoor unit according to claim 1, characterized in that: The electric control board (5) is fixed in the installation cavity (40) by means of screws.

8. The air conditioner indoor unit according to claim 1, characterized in that: A smooth heat exchange air duct is formed between the middle frame (4) and the chassis (1).

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