Control circuit board of air conditioner indoor unit, electric control box and air conditioner

Abstract

The utility model provides a control circuit board of an air conditioner indoor unit, an electric control box and an air conditioner, relates to the technical field of air conditioners, and aims to solve the problem that the electric control box is difficult to arrange. The control circuit board of the air conditioner indoor unit comprises a circuit board body, a motor control circuit and a display control circuit, the motor control circuit and the display control circuit are both arranged on the circuit board body, and the motor control circuit and the display control circuit are both connected with the main control chip. The display control circuit can be integrated on the control circuit board, a box body does not need to be independently arranged for the display assembly, and arrangement of the electric control box is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and more specifically, to a control circuit board, an electric control box and an air conditioner for an indoor unit of an air conditioner. Background Art

[0002] In a wall-mounted air conditioner indoor unit, the electric control box is usually arranged at the end of the internal space of the wall-mounted air conditioner indoor unit, such as the left end or the right end. However, such an arrangement will increase the overall length of the wall-mounted air conditioner indoor unit. On the one hand, it will lead to an increase in the materials used for the base, middle frame and panel of the air conditioner, increasing the cost of the air conditioner. On the other hand, it will also result in a relatively large length of the air conditioner, making it difficult to install in an indoor space.

[0003] Generally, a display area is provided on the panel of the wall-mounted air conditioner indoor unit, and a display component is arranged behind the display area to display information such as the set temperature and the operating mode of the air conditioner. The display component is installed on the inner surface of the panel and faces the display area. The electric control box is installed on the base, the main control circuit board is arranged in the electric control box, and the display control circuit board of the display component is connected to the main control circuit board through wires. Therefore, the overall structure has many components, many wiring steps, and high production man-hours. Summary of the Utility Model

[0004] The first object of the utility model is to provide a control circuit board for an indoor unit of an air conditioner, so as to solve the technical problem of inconvenient wiring between the existing electric control box and the display control circuit board.

[0005] The control circuit board for the indoor unit of the air conditioner provided by the utility model includes a circuit board body, a motor control circuit and a display control circuit. Both the motor control circuit and the display control circuit are arranged on the circuit board body, and both the motor control circuit and the display control circuit are connected to a main control chip.

[0006] The beneficial effect brought by the electric control box of the utility model is as follows:

[0007] By arranging the display control circuit on the circuit board body, the display control circuit can be integrated into the control circuit board of the indoor unit of the air conditioner to control an LED lamp to display information, without separately providing a box body for the display control circuit, and more importantly, without the need for wiring between the display control circuit and the electric control box, thus shortening the assembly time.

[0008] In an optional technical solution, the control circuit board includes pin components and surface mount components. All the pin components are arranged on the back of the circuit board body, and at least part of the surface mount components are arranged on the front of the circuit board body.

[0009] All pin components are arranged on the back of the circuit board body, while at least some of the surface-mounted components are arranged on the front of the circuit board body. During soldering, when soldering the pins protruding from the circuit board body of the pin components, it only needs to be soldered from the front of the circuit board body to complete; it is also possible to solder at least some of the surface-mounted components from the front, without having to turn over the control circuit board between different soldering processes, improving manufacturing efficiency and reliability. Moreover, by arranging pin components and surface-mounted components on both sides of the circuit board body respectively, the space of the circuit board body can be fully utilized to reduce the overall size of the circuit board.

[0010] In an optional technical solution, the display control circuit includes an LED lamp, and the LED lamp is a surface-mounted component.

[0011] The use of surface-mounted components for the LED lamp means that the front of the circuit board body where the LED lamp is arranged faces the front of the indoor air conditioner, while the back where the pin components are arranged faces the back of the air conditioner. Since the pin components include components with larger volume or higher height such as power components, arranging these components on the back of the circuit board body is beneficial to reducing the distance between the circuit board body and the front panel of the indoor air conditioner, saving the space in front of the circuit board body, thus being beneficial to reducing the overall thickness and volume of the electronic control box and facilitating its arrangement in front of the blower motor.

[0012] In an optional technical solution, multiple said LED lamps are arranged in groups, and multiple said LED lamps in each group are arranged in an 8-shaped pattern.

[0013] Arranging multiple LED lamps in groups in an eight-shaped pattern can respectively control whether each LED lamp is lit to form a seven-segment digital display for displaying information such as the set temperature of the air conditioner.

[0014] The second object of the present utility model is to provide an air conditioner to solve the technical problem of difficult arrangement of the electronic control box.

[0015] The air conditioner provided by the present utility model includes a box body and the control circuit board of any one of the above, and the control circuit board is installed in the box body.

[0016] By providing the above control circuit board in the electronic control box, correspondingly, the electronic control box has all the advantages of the above control circuit board, which will not be elaborated here one by one.

[0017] In an optional technical solution, the electronic control box includes a display component, and the display component is arranged at the lower part of the control circuit board; and / or, a terminal block is also provided on the control circuit board, and the terminal block is located at the lower part of the control circuit board.

[0018] By installing the display component at the lower part of the control circuit board, the upper space of the control circuit board can be vacated to install larger components such as power components. Since the electronic control box is located at the front and right position of the wall-mounted air conditioner indoor unit, there are also components such as the wind wheel motor, motor gland, U-shaped pipe of the heat exchanger, and refrigerant connection pipe behind the electronic control box. Therefore, the space in the lower right area of the wall-mounted air conditioner indoor unit is relatively tight. By setting the display component at the lower part of the control circuit board, the lower part of the electronic control box is relatively thin, which is conducive to setting the lower part of the electronic control box in front of the above components; setting larger components, especially those that significantly increase the thickness of the electronic control box in the front-back direction, in the upper part will not cause obvious interference to the layout of the wall-mounted air conditioner indoor unit, thereby improving the utilization rate of the internal space of the wall-mounted air conditioner indoor unit. In other words, the overall length and volume of the wall-mounted air conditioner indoor unit can be reduced.

[0019] Moreover, the leads connected through the terminal blocks are usually leads with relatively small transmitted electric power. For example, they can be the connections between the motors for driving the up-down or left-right swing blades and the electronic control box. By setting the terminal blocks for connecting these leads at the lower part of the control circuit board, on the one hand, the length of the corresponding leads can be shortened, saving manufacturing costs. On the other hand, the thickness of the lower part of the electronic control box can be reduced, facilitating the arrangement of the electronic control box in the front space at one end of the wall-mounted air conditioner indoor unit, which is conducive to improving the overall compactness of the wall-mounted air conditioner indoor unit.

[0020] In an optional technical solution, the display component has a light-emitting part. The box body includes a box base and a box cover that is snap-fitted and fixedly connected to the box base. The front wall of the box base is provided with a first hollowed-out part for accommodating the light-emitting part.

[0021] By using the first hollowed-out part to accommodate the light-emitting part, on the one hand, the light-emitting part can be made to fit the front panel of the wall-mounted air conditioner indoor unit, facilitating clearer information display. On the other hand, part of the thickness of the display component can coincide with the thickness of the front wall of the box base, thereby reducing the overall thickness of the electronic control box.

[0022] In an optional technical solution, the front wall of the box base is further provided with a second hollowed-out part that communicates the first hollowed-out part with the side edge of the front wall of the box base. The side edge is the side edge of the front wall of the box base facing the box cover.

[0023] By providing the second hollowed-out part to communicate the first hollowed-out part with the side edge of the front wall of the box base, during the process of installing the circuit board body in the box body, the light-emitting part can be inserted into the first hollowed-out part at the same time, thus improving the assembly efficiency.

[0024] In an alternative technical solution, the display component has a fixing frame, and the fixing frame is fixedly connected to the circuit board body; fixing holes are provided on the circuit board body, the fixing frame includes fixing tongues, the fixing tongues are inserted through the fixing holes, and the anti-retreat portions of the fixing tongues abut against the rear side surface of the circuit board body.

[0025] By providing the fixing tongues and using the anti-retreat portions of the fixing tongues to abut against the rear side surface of the circuit board body, after the fixing tongues are inserted into the circuit board body, the fixing frame can be prevented from detaching from the circuit board body to achieve reliable fixation of the fixing frame and the circuit board body.

[0026] In an alternative technical solution, the fixing frame includes a limiting plate and a first limiting rib, the limiting plate and the first limiting rib are oppositely arranged to form a limiting groove, a second limiting rib is provided on the front wall of the box seat, the second limiting rib matches the limiting groove, and the first limiting rib, the second limiting rib and the limiting groove all extend along the direction in which the control circuit board slides into or out of the box seat.

[0027] By providing the limiting groove formed by the first limiting rib and the limiting plate and matching it with the second limiting rib on the box cover, during the process of inserting the circuit board body into the box seat, the limiting groove and the second limiting rib can be used to guide and limit the fixing frame and the box seat. Moreover, after the installation process is completed, the second limiting rib can support the limiting groove of the fixing frame, thereby preventing the free end of the display component from shaking and improving the stability of the display component.

[0028] The third object of the present invention is to provide an air conditioner to solve the technical problem of inconvenient wiring between the existing electronic control box and the display control circuit board.

[0029] The air conditioner provided by the present invention includes a wall-mounted air conditioner indoor unit, the wall-mounted air conditioner indoor unit includes a base, a wind wheel motor and the electronic control box according to any one of the above, the wind wheel motor is installed on the base, and the electronic control box is located in front of the wind wheel motor.

[0030] By providing the above-mentioned electronic control box in the air conditioner, correspondingly, the air conditioner has all the advantages of the above-mentioned electronic control box, which will not be elaborated here one by one. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments or background art of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments or background art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0032] Figure 1Schematic diagram of the control circuit board provided by Embodiment 1 of the present utility model;

[0033] Figure 2 Schematic diagram of the control circuit board provided by Embodiment 1 of the present utility model observed from another direction;

[0034] Figure 3 Three-dimensional sectional view of the electric control box provided by Embodiment 2 of the present utility model;

[0035] Figure 4 External view schematic diagram of the electric control box provided by Embodiment 2 of the present utility model;

[0036] Figure 5 Three-dimensional disassembly diagram of the electric control box provided by Embodiment 2 of the present utility model observed from another direction;

[0037] Figure 6 Three-dimensional disassembly diagram of the electric control box provided by Embodiment 2 of the present utility model observed from another direction;

[0038] Figure 7 Schematic diagram of the structure of the electric control box provided by Embodiment 2 of the present utility model when the control circuit board and the box base are in a separated state;

[0039] Figure 8 Schematic diagram of the structure of the display frame in the electric control box provided by Embodiment 2 of the present utility model;

[0040] Figure 9 Schematic diagram of the structure of the electric control box provided by Embodiment 2 of the present utility model when the display frame and the circuit board body are in a separated state;

[0041] Figure 10 Schematic diagram of the structure of the electric control box provided by Embodiment 2 of the present utility model when the display frame and the circuit board body are in a separated state observed from another direction;

[0042] Figure 11 Schematic diagram of the structure of the electric control box provided by Embodiment 2 of the present utility model when the display frame and the circuit board body are in a separated state observed from yet another direction;

[0043] Figure 12 Schematic diagram of the structure of the wall-mounted air conditioner indoor unit provided by Embodiment 3 of the present utility model.

[0044] Explanation of reference numerals:

[0045] 100 - control circuit board; 110 - circuit board body; 111 - fixing hole; 120 - main control chip; 130 - motor control circuit; 140 - display control circuit; 150 - pin component; 160 - surface mount component; 170 - LED lamp; 180 - terminal block;

[0046] 200 - Box base; 210 - First hollow part; 220 - Second hollow part; 231 - First slot; 232 - Second slot; 233 - Guide part; 241 - Second limiting rib;

[0047] 300 - Box cover;

[0048] 400 - Display component; 410 - Light - emitting part; 420 - Fixed frame; 421 - Fixed tongue; 422 - Anti - retreat part; 423 - First limiting rib; 424 - Limiting plate; 425 - Limiting groove;

[0049] 510 - Base. Detailed implementation manners

[0050] To make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following detailed description is made on the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0051] If not otherwise specified, the definitions of directions in this application are as follows: The front refers to the side of the wall - mounted air - conditioner indoor unit facing the main indoor space, and the rear is the side of the wall - mounted air - conditioner indoor unit facing the wall on which it is hung. The lower side is the side of the wall - mounted air - conditioner indoor unit facing the ground. The upper side is the side of the wall - mounted air - conditioner indoor unit facing the ceiling. The left and right can be defined based on the above - mentioned front, rear and lower sides, that is, when the observer faces the wall on which the wall - mounted air - conditioner is installed, the left - hand direction of the observer is the left side, and the right - hand direction of the observer is the right side.

[0052] Embodiment 1:

[0053] Figure 1 It is a schematic structural diagram of the control circuit board provided in Embodiment 1 of the present utility model; Figure 2 It is a schematic structural diagram of the control circuit board provided in Embodiment 1 of the present utility model observed from another direction; As Figure 1 - Figure 2 shown, the control circuit board 100 of the air - conditioner indoor unit provided in Embodiment 1 of the present utility model, the control circuit board 100 includes a circuit board body 110, a motor control circuit 130 and a display control circuit 140. The motor control circuit 130 and the display control circuit 140 are both arranged on the circuit board body 110, and the motor control circuit 130 and the display control circuit 140 are both connected to the main control chip 120.

[0054] By disposing the display control circuit 140 on the circuit board body 110, the display control circuit 140 can be integrated into the control circuit board 100 of the air conditioner indoor unit to control the LED lamp 170 to display information. There is no need to separately provide a box body for the display control circuit 140, and there is no need to wire the display control circuit 140 to the electric control box, thus shortening the assembly time.

[0055] As Figure 1 and Figure 2 shown, optionally, the control circuit board 100 includes pin components 150 and surface mount components 160. All the pin components 150 are disposed on the back surface of the circuit board body 110, and the surface mount components 160 are disposed on the front surface of the circuit board body 110.

[0056] By disposing all the pin components 150 on the back surface of the circuit board body 110 and disposing at least part of the surface mount components 160 on the front surface of the circuit board body 110, during soldering, when soldering the pins of the pin components 150 protruding from the circuit board body 110, it only needs to be soldered from the front surface of the circuit board body 110 to complete; it is also possible to solder at least part of the surface mount components 160 from the front surface, without the need to turn over the control circuit board 100 between different soldering processes, improving the manufacturing efficiency and reliability. Moreover, by disposing the pin components 150 and the surface mount components 160 on the two sides of the circuit board body 110 respectively, the space of the circuit board body 110 can be fully utilized to reduce the overall size of the circuit board.

[0057] Specifically, the pins of the pin components 150 are inserted into the jacks of the circuit board body 110 and protrude from the front surface of the circuit board body 110 by a certain length. When soldering the pin components 150, a wave soldering process can be implemented on the front surface of the control circuit board 100 to fix the pin components 150 to the circuit board body 110. The surface mount components 160 are mounted on the front surface of the circuit board body 110, and a surface mount soldering process is implemented on the front surface of the circuit board body 110 during soldering to solder and fix the surface mount components 160 to the circuit board body 110.

[0058] As Figure 1 and Figure 2 shown, optionally, the display control circuit 140 includes an LED lamp 170, and the LED lamp 170 is a surface mount component 160.

[0059] The LED lamp 170 uses surface-mounted components 160, which means that the front side of the LED lamp 170 on the circuit board body 110 faces the front of the indoor air conditioner, while the back side of the pin component 150 faces the back of the air conditioner. Since the pin component 150 includes components such as power elements that are relatively large in volume or height, setting these components behind the circuit board body 110 is beneficial to reducing the distance between the circuit board body 110 and the front panel of the indoor air conditioner, saving the space in front of the circuit board body 110, thereby facilitating reducing the overall thickness and volume of the electronic control box and making it easy to arrange in front of the blower motor.

[0060] As Figure 1 and Figure 2 shown, optionally, multiple LED lamps 170 are arranged in groups, and the multiple LED lamps 170 in each group of LED lamps 170 are arranged in an 8-shaped pattern.

[0061] Arranging multiple LED lamps 170 in groups in an eight-character shape allows each LED lamp 170 to be controlled separately to light up or not to form a seven-segment digital display for displaying information such as the set temperature of the air conditioner.

[0062] Specifically, in this embodiment, two groups of LED lamps 170 can be set to display two 8 characters, which is sufficient to meet the normal need for temperature display. Figure 2 Among them, the 7 LED lamps 170 circled by each closed dotted line are a group of LED lamps 170.

[0063] Embodiment 2:

[0064] Figure 3 is a three-dimensional cross-sectional view of the electronic control box provided in Embodiment 2 of the present invention; Figure 4 is an external view of the electronic control box provided in Embodiment 2 of the present invention; As Figure 3 and Figure 4 shown, Embodiment 2 also provides an electronic control box applied to a wall-mounted air conditioner indoor unit. The electronic control box includes a box body and the above-mentioned control circuit board 100, and the control circuit board 100 is installed in the box body.

[0065] By setting the above-mentioned control circuit board 100 in the electronic control box, correspondingly, this electronic control box has all the advantages of the above-mentioned control circuit board 100, which will not be elaborated here one by one.

[0066] Among them, in this embodiment, taking the electronic control box located in the right half of the wall-mounted air conditioner indoor unit as an example, that is, the blower motor (not shown in the figure) is located at a position close to the right end on the base 510, the blower (not shown in the figure) driven by the blower motor is located on the left side of the blower motor, and a motor gland (not shown in the figure) is provided outside the blower motor. In this embodiment, the box body of the electronic control box includes a box base 200 and a box cover 300, and the control circuit board 100 is mainly arranged in the box base 200. Since the electronic control box is located in the right part of the internal space of the wall-mounted air conditioner indoor unit, the box cover 300 is buckled onto the box base 200 from right to left.

[0067] Figure 5 FIG. 4 is a three-dimensional exploded view of the electronic control box provided in the second embodiment of the present invention as viewed from another direction; Figure 6 FIG. 4 is a three-dimensional exploded view of the electronic control box provided in the second embodiment of the present invention as viewed from another direction; Figure 7 FIG. 5 is a schematic structural diagram of the control circuit board and the box base in a separated state in the electronic control box provided in the second embodiment of the present invention; As Figure 3 and Figure 5 - Figure 7 shown, optionally, the display component 400 is installed at the lower part of the control circuit board 100. A wiring terminal 180 is also provided on the control circuit board 100, and the wiring terminal 180 is located at the lower part of the control circuit board 100.

[0068] By installing the display component 400 at the lower part of the control circuit board 100, the upper space of the control circuit board 100 can be vacated for installing larger components such as power components. Since the electronic control box is located at a position in the front of the right part of the wall-mounted air conditioner indoor unit, there are also components such as a blower motor, a motor gland, a U-shaped pipe of a heat exchanger, and a refrigerant connecting pipe behind the electronic control box. Therefore, the space in the lower right area of the wall-mounted air conditioner indoor unit is relatively tight. By arranging the display component 400 at the lower part of the control circuit board 100, the lower part of the electronic control box is relatively thin, which is beneficial to arranging the lower part of the electronic control box in front of the above components; setting larger components, especially components that significantly increase the thickness of the electronic control box in the front-rear direction, on the upper part will not cause obvious interference to the layout of the wall-mounted air conditioner indoor unit, thereby improving the utilization rate of the internal space of the wall-mounted air conditioner indoor unit. In other words, the overall length and volume of the wall-mounted air conditioner indoor unit can be reduced.

[0069] Moreover, through the leads connected to the wiring terminal 180, which are usually leads for transmitting relatively small electric power, such as the connection wires between the motors for driving the up-and-down swing blades or left-and-right swing blades and the electronic control box. By arranging the wiring terminal 180 for connecting these leads at the lower part of the control circuit board 100, on the one hand, the length of the corresponding leads can be shortened, saving manufacturing costs, and on the other hand, the thickness of the lower part of the electronic control box can be reduced, facilitating the arrangement of the electronic control box in the front space at one end of the wall-mounted air conditioner indoor unit, so as to improve the overall compactness of the wall-mounted air conditioner indoor unit.

[0070] Specifically, in this embodiment, the terminal block 180 may include a terminal block 180 for directly connecting wires downward and a terminal block 180 for leading wires in a horizontal direction parallel to the circuit board body 110.

[0071] As Figure 3 - Figure 6 shown, optionally, the display component 400 has a light-emitting part 410. The box body includes a box base 200 and a box cover 300. The front wall of the box base 200 is provided with a first hollow part 210 for accommodating the light-emitting part 410; the front wall of the box base 200 is further provided with a second hollow part 220, and the second hollow part 220 communicates with the first hollow part 210 and the side edge of the front wall of the box base 200. The side edge is the side edge of the front wall of the box base 200 facing the box cover 300.

[0072] By using the first hollow part 210 to accommodate the light-emitting part 410, on the one hand, it can make the light-emitting part 410 fit the front panel of the wall-mounted air conditioner indoor unit, so as to display information more clearly. On the other hand, it can make part of the thickness of the display component 400 coincide with the thickness of the front wall of the box base 200, thereby reducing the overall thickness of the electronic control box. And by setting the second hollow part 220 to communicate the first hollow part 210 and the side edge of the front wall of the box base 200, it can realize the process of installing the circuit board body 110 in the box body and at the same time insert the light-emitting part 410 into the first hollow part 210, thus improving the assembly efficiency.

[0073] Specifically, the first hollow part 210 is located at the lower part of the front wall of the box base 200. In this embodiment, since the box cover 300 is buckled on the box base 200 from the right side, the second hollow part 220 and the first hollow part 210 together form a notch part opening to the right, so as to facilitate the display component 400 to be inserted into the first hollow part 210.

[0074] As Figure 3 and Figure 5 - Figure 7 shown, in addition, the bottom wall of the box base 200 is provided with a first slot 231, and the bottom of the control circuit board 100 is inserted into the first slot 231; and / or, the top wall of the box base 200 is provided with a second slot 232, and the top of the control circuit board 100 is inserted into the second slot 232; the first slot 231 and the second slot 232 extend along the direction in which the control circuit board 100 slides into or out of the box base 200.

[0075] By providing the second slot 232 on the top wall of the box base 200, it is beneficial to cooperate with the first slot 231 on the bottom wall of the circuit board to position both the upper and lower edges of the circuit board, so that the circuit board can maintain its position and pitch in the front-rear direction, thereby improving the installation stiffness of the circuit board.

[0076] Among them, in this embodiment, the second slot 232 is disposed on the lower surface of the top wall, and the second slot 232 has a slot bottom, that is, the position of the slot bottom is higher than the slot opening. The second slot 232 extends in the left-right direction. Correspondingly, the circuit board can be inserted into the second slot 232 in a direction from right to left.

[0077] As Figure 5 - Figure 7 shown, specifically, in this embodiment, the slot wall of the second slot 232 has a guiding portion 233. In this embodiment, the guiding portion 233 is located at the right end of the second slot 232, that is, at one end of the second slot 232 close to the box cover 300. Along the direction in which the circuit board is inserted into the second slot 232, that is, from right to left, the distance between the side walls of the guiding portion 233 gradually decreases. More specifically, one side wall of the guiding portion 233 may be collinear with the side wall of the second slot 232, and the other side wall of the guiding portion 233 may extend obliquely with respect to the side wall of the guiding portion 233. For example, in this embodiment, along the insertion direction of the circuit board, the rear side wall of the guiding portion 233 extends left and forward.

[0078] As Figure 3 and Figure 8 - Figure 11 shown, Figure 8 is a schematic structural diagram of a display frame in an electric control box provided in Embodiment II of the present invention; Figure 9 is a schematic structural diagram of a display frame and a circuit board body in a separated state in an electric control box provided in Embodiment II of the present invention; Figure 10 is a schematic structural diagram of a display frame and a circuit board body in a separated state in an electric control box provided in Embodiment II of the present invention as observed from another direction; Figure 11 is a schematic structural diagram of a display frame and a circuit board body in a separated state in an electric control box provided in Embodiment II of the present invention as observed from yet another direction; As Figure 3 and Figure 8 - Figure 11 shown, optionally, the display assembly 400 has a fixing frame 420, and the fixing frame 420 is fixedly connected to the circuit board body 110; fixing holes 111 are provided on the circuit board body 110, the fixing frame 420 includes fixing tongues 421, the fixing tongues 421 are inserted through the fixing holes 111, and the anti-withdrawal portions 422 of the fixing tongues 421 abut against the rear side surface of the circuit board body 110.

[0079] By providing the fixing tongues 421 and using the anti-withdrawal portions 422 of the fixing tongues 421 to abut against the rear side surface of the circuit board body 110, after the fixing tongues 421 are inserted into the circuit board body 110, the fixing frame 420 can be prevented from detaching from the circuit board body 110 to achieve reliable fixing of the fixing frame 420 and the circuit board body 110.

[0080] It should be noted that the fixing holes 111 on the circuit board body 110 penetrate along the thickness direction of the circuit board body 110, so that the fixing tongue 421 can penetrate from the front side of the circuit board body 110 and abut against the rear side of the circuit board body 110 by means of the anti-retreat portion 422, that is, the back side of the circuit board body 110.

[0081] Specifically, in this embodiment, there may be three fixing holes 111 on the circuit board body 110, arranged in a character shape with one on the top and two on the bottom. Specifically, each fixing hole 111 may be rectangular. The position of the fixing tongue 421 is correspondingly set with the fixing hole 111, and the free end of the fixing tongue 421 may be wedge-shaped. The back side of the wedge, that is, the end face of the wedge close to the root of the fixing tongue 421, is the anti-retreat portion 422.

[0082] As Figure 3 and Figure 8 - Figure 10 shown, optionally, the fixing frame 420 includes a limiting plate 424 and a first limiting convex rib 423. The limiting plate 424 and the first limiting convex rib 423 are oppositely arranged and form a limiting groove 425. The front wall of the box seat 200 is provided with a second limiting convex rib 241, and the second limiting convex rib 241 matches the limiting groove 425. The first limiting convex rib 423, the second limiting convex rib 241, and the limiting groove 425 all extend along the direction in which the control circuit board 100 slides into or out of the box seat 200.

[0083] By providing the limiting groove 425 formed by the first limiting convex rib 423 and the limiting plate 424, which matches the second limiting convex rib 241 on the box cover 300, the fixing frame 420 and the box seat 200 can be guided and limited by the limiting groove 425 and the second limiting convex rib 241 during the process of inserting the circuit board body 110 into the box seat 200. Moreover, after the installation process is completed, the second limiting convex rib 241 can support the limiting groove 425 of the fixing frame 420, thereby preventing the free end of the display component 400 from shaking and improving the stability of the display component 400.

[0084] Specifically, in this embodiment, the first limiting convex rib 423 is arranged at the upper end of the front surface of the fixing frame 420, and the limiting plate 424 is fixedly arranged opposite to and relative to the first limiting convex rib 423, and the two form a limiting groove 425. In the middle of the length direction of the limiting plate 424, a fixing tongue 421 is arranged to be connected to the circuit board body 110. The second limiting convex rib 241 is arranged on the inner surface of the front wall of the box seat 200, that is, the rear surface of the front wall of the box seat 200, and cooperates with the limiting groove 425.

[0085] Embodiment Three:

[0086] Figure 12 is a schematic structural diagram of the wall-mounted air conditioner indoor unit provided by the third embodiment of the present invention; As Figure 12As shown in the figure, Embodiment 3 also provides an air conditioner, including a wall-mounted air conditioner indoor unit, which includes a base 510, a blower motor, and the electronic control box of any one of the above. The blower motor is installed on the base 510, and the electronic control box is located in front of the blower motor.

[0087] By providing the above-mentioned electronic control box in the air conditioner, correspondingly, the air conditioner has all the advantages of the above-mentioned electronic control box, which will not be elaborated here one by one.

[0088] In this embodiment, the electronic control box is located in the right half of the wall-mounted air conditioner indoor unit, that is, the blower motor is located at a position close to the right end on the base 510, and the blower driven by the blower motor is located on the left side of the blower motor.

[0089] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

[0090] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article, or device including the said element.

[0091] In the above embodiments, the descriptions of orientations such as "upper" and "lower" are all based on the figures shown.

[0092] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model.

[0093] Therefore, the present utility model will not be limited to these embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control circuit board (100) of an air conditioner indoor unit, characterized in that, The control circuit board (100) includes a circuit board body (110), a motor control circuit (130), and a display control circuit (140). The motor control circuit (130) and the display control circuit (140) are both disposed on the circuit board body (110), and the motor control circuit (130) and the display control circuit (140) are both connected to the main control chip (120).

2. The control circuit board (100) according to claim 1, wherein, The control circuit board (100) includes pin components (150) and surface mount components (160). All the pin components (150) are disposed on the back surface of the circuit board body (110), and at least part of the surface mount components (160) are disposed on the front surface of the circuit board body (110).

3. The control circuit board (100) according to claim 1, characterized in that, The display control circuit (140) includes an LED lamp (170), and the LED lamp (170) is a surface mount component (160).

4. The control circuit board (100) according to claim 3, characterized in that, A plurality of the LED lamps (170) are arranged in groups, and the plurality of the LED lamps (170) in each group of the LED lamps (170) are arranged in an 8-shaped pattern.

5. An electronic control box is applied to a wall-mounted air conditioner indoor unit, characterized in that, The electric control box includes a box body and the control circuit board (100) according to any one of claims 1-4, and the control circuit board (100) is installed in the box body.

6. The electronic control box according to claim 5, characterized in that, The electric control box includes a display component (400), and the display component (400) is disposed below the control circuit board (100); and / or, a terminal block (180) is further provided on the control circuit board (100), and the terminal block (180) is located below the control circuit board (100).

7. The electronic control box according to claim 6, wherein The display component (400) has a light-emitting portion (410). The box body includes a box base (200) and a box cover (300) that is snap-fitted and fixedly connected to the box base (200). A first hollow portion (210) is provided on the front wall of the box base (200), and the first hollow portion (210) is used to accommodate the light-emitting portion (410).

8. The electronic control box according to claim 7, characterized in that, A second hollow portion (220) is further provided on the front wall of the box base (200), and the second hollow portion (220) communicates the first hollow portion (210) with a side edge of the front wall of the box base (200), and the side edge is the side edge of the front wall of the box base (200) facing the box cover (300).

9. The electronic control box according to claim 7, wherein, The display component (400) has a fixing frame (420), and the fixing frame (420) is fixedly connected to the circuit board body (110); fixing holes (111) are provided on the circuit board body (110), the fixing frame (420) includes fixing tongues (421), the fixing tongues (421) are inserted through the fixing holes (111), and a retaining portion (422) of the fixing tongues (421) abuts against the rear side surface of the circuit board body (110).

10. The electronic control box according to claim 9, characterized in that, The fixed frame (420) includes a limiting plate (424) and a first limiting rib (423). The limiting plate (424) is disposed opposite to the first limiting rib (423) and forms a limiting groove (425). The front wall of the box base (200) is provided with a second limiting rib (241). The second limiting rib (241) is matched with the limiting groove (425). The first limiting rib (423), the second limiting rib (241) and the limiting groove (425) all extend along the direction in which the control circuit board (100) slides into or out of the box base (200).

11. An air conditioner, characterized in that, The air conditioner includes a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit includes a base (510), a wind wheel motor and an electronic control box according to any one of claims 5-10. The wind wheel motor is installed on the base (510), and the electronic control box is located in front of the wind wheel motor.

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