Electric appliance box structure and air conditioner

Abstract

The electric appliance box structure comprises a first PCB assembly vertically arranged in an outdoor unit and a connecting plate connected between the first PCB assembly and the lower portion of a lifting handle of the outdoor unit, and a rainproof opening is formed in the portion, close to the side of the lifting handle of the outdoor unit, of the connecting plate. The lower edge of the rainproof opening is connected with an inclined plate which is inclined towards the direction of the first PCB assembly and is used for installing a wiring board. Through the design of the rainproof opening and the inclined plate, rainwater is effectively guided to be shunted outwards, the rainwater is prevented from dripping on the wiring board, and potential safety hazards such as short circuit and element corrosion are avoided. Flow guide strips are arranged on the two sides of the second connecting part, the flow guide effect is further improved, and rainwater accumulation is prevented. And the design of the ventilation gap between the electric appliance box and the front side wall of the outdoor unit is beneficial to air circulation in the electric appliance box, the heat dissipation performance is improved, it is ensured that electronic elements work at the proper temperature, and the service life of the elements is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioner design structures, in particular to an electrical box structure and an air conditioner. Background Art

[0002] With the rapid development of air-conditioning technology, air-conditioning equipment must not only realize basic cooling and heating functions, but also continuously add other intelligent functions to meet the increasingly diverse life needs of users, such as intelligent temperature control, energy-saving operation, remote control, etc. The realization of these functions mainly depends on the main control board inside the air-conditioning electrical box. As the core control unit of the air-conditioning system, the main control board has increasing functional requirements, which leads to the increasing complexity of the electronic components, control circuits and interfaces on the main control board. Under the condition of limited electrical box size, it is often difficult to integrate all functional modules on a single main control board. Therefore, in order to meet the needs of system control, auxiliary circuit boards such as wiring boards and filter boards are usually set up. These circuit boards play an important role in carrying more wiring, signal transmission and power filtering in the air-conditioning outdoor unit, further improving the stability and functional expansion capabilities of the air-conditioning system.

[0003] In the prior art, the wiring board of the air conditioner outdoor unit is generally installed below the handle of the outdoor unit. Although this design is convenient for maintenance and wiring operations, the air conditioner outdoor unit is usually installed in an outdoor environment and is exposed to adverse weather conditions such as wind and rain. When there is a structural gap between the side panel of the outdoor unit and the handle, rainwater can easily penetrate or drip onto the wiring board along the gap, especially in heavy rain weather, where rainwater leakage is more serious.

[0004] Therefore, in view of the problem that the existing air-conditioning outdoor unit connection board layout is easily affected by rain, it is urgent to propose an improvement plan to improve the safety and reliability of the air-conditioning outdoor unit in harsh environments and avoid electrical failures and safety hazards caused by rainwater leakage. Summary of the invention

[0005] In order to solve the technical problem in the prior art that the wiring board near the handle is easily affected by rain, the present invention provides an electrical box structure and an air conditioner.

[0006] The technical solution adopted by the present invention is:

[0007] The present invention proposes an electrical box structure, comprising: a first PCB assembly vertically arranged in an external unit, a connecting plate connected between the first PCB assembly and the bottom of a handle of the external unit, a portion of the connecting plate close to the handle side of the external unit is provided with a rainproof opening, and the lower edge of the rainproof opening is connected to an inclined plate inclined toward the first PCB assembly for installing a wiring board.

[0008] Furthermore, there are gaps between the two side edges of the inclined plate and the two ends of the lower edge of the rainproof opening.

[0009] Specifically, the connecting plate is bent to form a first connecting portion for mounting the second PCB board and a second connecting portion for mounting the wiring board.

[0010] Furthermore, the second connecting portion is located at the two side edges of the rainproof opening to form two guide strips.

[0011] Furthermore, the second connection part is bent outward below the middle part to be divided into two sections, the upper part of the second connection part is connected to the upper part of the handle on the external machine handle side, and the lower part of the handle on the external machine handle side is provided with a connecting piece extending obliquely upward for connecting to the bottom of the second connection part.

[0012] Furthermore, a gap is left between the first connecting portion and the front side wall of the external unit to form a ventilation gap.

[0013] Furthermore, the first connecting portion is connected to an edge of the first PCB assembly and is bent to form a connecting edge, and the connecting edge and the second PCB board are bent to form a reinforcing step.

[0014] Furthermore, the first connecting portion is provided with a mounting opening for mounting the second PCB board.

[0015] Preferably, the connecting plate is vertically bent to be divided into a first connecting portion and a second connecting portion, and the first connecting portion is vertically connected to the top of the first PCB assembly.

[0016] The present invention further provides an air conditioner, wherein the external unit of the air conditioner comprises the above-mentioned electrical appliance box structure.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. Through the design of rainproof openings and inclined plates, rainwater is effectively diverted outward to prevent it from dripping onto the wiring board, thus avoiding safety hazards such as short circuits and component corrosion. Guide strips are provided on both sides of the second connection to further enhance the diversion effect and prevent rainwater accumulation.

[0019] 2. The connecting plate is vertically bent to form the first connecting part and the second connecting part, which has a stable structure and good load-bearing capacity. The reinforced step design on the edge of the first connecting part enhances the rigidity of the connecting part and ensures the stability of the electrical box under external forces, vibrations and other conditions.

[0020] 3. The ventilation gap design between the first connection part and the front side wall of the external unit facilitates air circulation inside the electrical box, improves heat dissipation performance, ensures that electronic components work at a suitable temperature, and extends the service life of components.

[0021] 4. Through the multi-stage bending design, the installation space of the first PCB board, the second PCB board and the wiring board is reasonably allocated to realize the orderly partition layout of the circuit and functional modules. The internal space of the air conditioner outdoor unit is optimized to improve the compactness and neatness of the component layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A structural diagram showing leakage defects;

[0024] Figure 2 is a schematic structural diagram of an air conditioner outdoor unit in an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of the structure of the electrical box in an embodiment of the present invention;

[0026] Figure 4 is a schematic structural diagram of a connecting member in an embodiment of the present invention;

[0027] Figure 5 is a side view of a connecting member in an embodiment of the present invention;

[0028] Figure 6 is a front view of a connecting member in an embodiment of the present invention;

[0029] Figure 7 is a top view of a connecting member in an embodiment of the present invention;

[0030] 1. Connecting plate;

[0031] 11. first connecting portion; 111. mounting opening; 112. connecting edge; 113. strengthening step;

[0032] 12. second connecting portion; 121. guide strip; 122. rainproof opening; 123. inclined plate;

[0033] 2. The first PCB assembly;

[0034] 3. Second PCB board;

[0035] 4. Terminal block;

[0036] 5. External machine handle;

[0037] 100. Air conditioner outdoor unit. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0040] In the prior art, the wiring board of the air conditioner outdoor unit is generally installed below the handle of the outdoor unit. Although this design is convenient for maintenance and wiring operations, the air conditioner outdoor unit is usually installed in an outdoor environment and is exposed to adverse weather conditions such as wind and rain. When there is a structural gap between the side panel of the outdoor unit and the handle, rainwater can easily penetrate or drip onto the wiring board along the gap, especially in heavy rain weather, where rainwater leakage is more serious. Figure 1 As shown, the terminal block of this solution is directly installed on the inclined surface (terminal block installation area 01) near the bottom of the sheet metal, and the rainwater that enters will flow directly to the installation area of ​​the terminal block along the inclined surface, causing water to enter the terminal block.

[0041] like Figure 2 , 3 As shown in Figures 4 and 5, the present invention proposes an electrical box structure, comprising: a first PCB assembly 2 (specifically, it may include a PCB board and an unsealed box body on the side where the PCB board is installed) and a connecting plate 1, wherein the first PCB assembly 2 is vertically arranged on the inner side plate of the air conditioner outdoor unit 100 (the inner side plate is specifically on the side where the outdoor unit handle 5 is installed), one end of the connecting plate 1 is vertically connected to the first PCB assembly 2, and the other end is connected to the bottom of the handle on the side of the outdoor unit handle 5, and at the same time, a rainproof opening 122 is provided on the plate surface of the connecting plate 1 close to the handle side, and the lower edge of the rainproof opening 122 is connected to an inclined plate 123 bent toward the first PCB assembly 2, that is, the bottom of the inclined plate 123 is connected to the lower edge of the rainproof opening 122, and the top is inclined toward the first PCB assembly 2. A wiring board 4 (the connection line of the wiring board can also be connected through the rainproof opening when necessary) is installed on the side of the inclined plate 123 facing the handle.

[0042] By providing a rainproof opening 122 at a position close to the handle of the connecting plate 1 and providing an inclined inclined plate 123 to install the wiring board 4, the wiring board 4 can be kept away from the handle, so as to prevent rainwater that penetrates from the gap between the handle and the external unit from directly splashing onto the wiring board 4. In addition, since the rainproof opening 122 is provided on the connecting plate 1, rainwater that penetrates from the gap between the handle and the external unit will flow downward along the two sides of the connecting plate 1 located at the rainproof opening 122. The inclined plate 123 of the wiring board 4 does not directly contact the two side edges of the rainproof opening 122, so rainwater can be prevented from flowing onto the wiring board 4. Thus, the wiring board 4 can achieve a rainproof effect.

[0043] like Figure 4 As shown, in a further embodiment, there is a gap between the two side edges of the inclined plate 123 and the two ends of the lower edge of the rainproof opening 122, that is, the two sides of the inclined plate 123 do not completely fit the two ends of the lower edge of the rainproof opening 122, so a certain gap space is formed in this area. By maintaining a gap between the two sides of the inclined plate 123 and the two ends of the lower edge of the rainproof opening 122, rainwater that may penetrate from the gap on the handle side will not be forced to concentrate at the contact point between the inclined plate 123 and the lower edge of the rainproof opening 122 when flowing along the surface of the connecting plate 1 to the position of the rainproof opening 122; on the contrary, the rainwater can be naturally dispersed on both sides through the gap and continue to flow downward, thereby further reducing the risk of rainwater retention or gathering. The waterproof and rainproof effect of the wiring board 4 during the entire operation process is enhanced, and the overall reliability and service life of the internal components of the electrical box of the air conditioner outdoor unit 100 under severe weather conditions are also improved.

[0044] In a specific embodiment, the connecting plate 1 is bent into a first connecting portion 11 for mounting the second PCB board 3 (specifically, a filter board), and a second connecting portion 12 for mounting the wiring board 4. Figure 4 It can be seen that the upper area of ​​the connecting plate 1 is relatively straight and matches the position of the first PCB assembly 2. This area is the first connecting portion 11, which is used to stably install the second PCB board 3, so that the second PCB board 3 can maintain a reasonable distance and position relationship with the first PCB assembly 2, thereby achieving more orderly space utilization in circuit design and component layout. At the same time, the part of the connecting plate 1 extending to the handle side is bent again to form a second connecting portion 12, which is inclined or drooping relative to the first connecting portion 11, and is adjacent to the inclined plate 123 for installing the wiring board 4.

[0045] Through this bending partition design, the first connection part 11 and the second connection part 12 are functionally independent and mutually coordinated: the first connection part 11 provides a stable and compact mounting surface for the second PCB board 3, so that it forms a tightly stacked circuit layout inside the air conditioner outdoor unit 100; and the second connection part 12 provides an installation environment for the wiring board 4 through its own bending angle and position. Combined with the design of the inclined plate 123, it can not only ensure that the wiring board 4 is securely fixed in a safer and waterproof area, but also to a certain extent improve the standardization and neatness of the wiring inside the outdoor unit, and realize clear partitioning and efficient utilization between components.

[0046] like Figure 4 , 6 As shown, specifically, the second connection part 12 is located at the two side edges of the rainproof opening 122 to form two guide strips 121. The two guide strips 121 are located at the edge of the second connection part 12 of the connecting plate 1 in the figure and are symmetrically distributed with the rainproof opening 122. Specifically, the two guide strips 121 extend from top to bottom in the edge area of ​​the rainproof opening 122 of the second connection part 12. When water droplets may penetrate into this area along the surface of the air conditioner outdoor unit 100 or the handle side, the guide strip 121, through its own shape, diverts and guides the rainwater to both sides, avoiding the accumulation of rainwater in the installation area of ​​the terminal block 4 or directly dripping on the terminal block 4. This diversion design cooperates with the inclined plate 123 to allow the water flow to naturally move away from the terminal block 4 along the extension direction of the guide strip 121, thereby reducing the risk of components getting damp, short circuits, etc.

[0047] In a further embodiment, the second connecting portion 12 is bent outward below the middle to be divided into two sections, so that the portion from the middle to the bottom forms a structure with clear levels in space and slightly expanding outwards. Figure 5 It can be seen that the connection plate 1 as a whole has a multi-section layout distributed front to back, the first connection part 11 and the second connection part 12 are connected to each other, and the middle and lower parts of the second connection part 12 have an obvious bend from inside to outside, so that two areas with different inclination angles are generated in the longitudinal direction, reserving a more reasonable space for installing the terminal block 4 and related components.

[0048] The upper area of ​​the second connection part 12 is closely connected with the upper part of the external machine handle 5, providing a high and stable support point for the installation of the connection plate 1; below the middle, the second connection part 12 begins to bend outward and is divided into two sections, so that the lowermost section of the part tends to extend outward, forming an inclined interface that is conducive to wiring and component installation;

[0049] A connecting piece (not shown) extending obliquely upward is provided below the handle on the side of the external machine handle 5, and its position matches the oblique direction of the bottom of the second connecting portion 12. The connecting piece is engaged with the lower end of the second connecting portion 12 to realize the fixed connection from the upper part to the auxiliary support at the bottom, so that the rigidity and stability of the entire structure in the vertical direction are improved.

[0050] Through this multi-stage partitioning and inclination angle change design, the second connecting portion 12 meets the upper fixing requirements while optimizing the space utilization by bending outward below the middle portion.

[0051] In a specific embodiment, there is a certain amount of space between the first connecting portion 11 and the front wall of the external unit, that is, a ventilation gap is formed. Figure 4 The ventilation notch and the connecting plate 1 and the various PCB components connected thereto form a relatively independent ventilation channel, which is beneficial for the internal air to form natural convection or auxiliary ventilation between the condenser, the fan and the electronic components, thereby effectively reducing the influence of high temperature accumulation on the performance and life of the electronic components.

[0052] The setting of the ventilation gap can provide good air circulation conditions inside the electrical box. When the air conditioner outdoor unit 100 is working, the electronic components and control circuits inside it will generate a certain amount of heat, and proper ventilation helps to slow down the temperature rise rate, thereby keeping the internal components working within a reasonable temperature range and improving the stability and service life of the system.

[0053] In a specific embodiment, the first connecting portion 11 is connected to the edge of the first PCB assembly 2 by bending to form a connecting edge 112. Figure 3 , 4 As shown in Figures 7 and 8, this connecting edge 112 fits tightly against the first PCB assembly 2, and a reinforcing step 113 is formed between the connecting edge 112 and the second PCB board 3 by bending. The function of this reinforcing step 113 is to form a "vertical drop" or "support section" in the longitudinal direction, thereby improving the mechanical stability and structural rigidity of the connecting part. Through the design of the reinforcing step 113, the connecting board 1 obtains additional supporting points and positioning surfaces in the docking area with the second PCB board 3, so that the second PCB board 3 can not only be stably installed at an ideal height and angle, but also maintain a more stable fixed state when subjected to external factors such as vibration, collision or temperature changes. The reinforcing step 113 is like a miniature "step" set up between the connecting part and the PCB board, ensuring that the connection is not easily deformed or loosened when external forces act.

[0054] Combined with the overall structure described above and the details in the attached drawings, the strengthening step 113 cooperates with the multiple bends and tilts on the connecting plate 1, making the PCB layout and support system inside the entire electrical box more reasonable and compact. This not only improves the space utilization efficiency inside the electrical box, but also improves the reliability and service life of the electronic control part of the air conditioner outdoor unit 100 under long-term, high-load operation.

[0055] In a specific embodiment, an opening 111 is installed in the structure of the first connecting portion 11, so that the second PCB board 3 can be quickly and firmly positioned and installed through the opening. And by setting positioning holes or reinforcing ribs around the installation opening 111, the rigidity and stability of the installation point can be effectively enhanced. When the second PCB board 3 is installed in place through the installation opening 111, it can not only achieve spatial separation and functional partitioning from the first PCB assembly 2, but also provide convenience for subsequent maintenance, disassembly or upgrading. In actual use, the setting of this installation opening 111 can maximize the layout flexibility and maintainability of the electronic components inside the air conditioner outdoor unit 100 without affecting the overall structural strength.

[0056] In a specific embodiment, the connecting plate 1 is vertically bent to be divided into a first connecting portion 11 and a second connecting portion 12, and the first connecting portion 11 is vertically connected to the top of the first PCB assembly 2. It is differentiated from an integral flat plate into the upper first connecting portion 11 and the lower second connecting portion 12. The first connecting portion 11 is fixedly connected to the top of the first PCB assembly 2 in a vertical manner, which helps to form a clear upper and lower structural layout inside the air-conditioning outdoor unit 100. It is beneficial to reserve sufficient space and heat dissipation conditions for the first PCB assembly 2 and related electronic modules on the upper layer, and at the same time provide an independent area for the arrangement of the second PCB board 3 or the wiring board 4 on the lower layer. The first connecting portion 11 is directly vertically connected to the first PCB assembly 2, which not only improves the overall structural stability, but also helps to ensure that the PCB board and the connecting plate can still maintain reliable support and positioning when subjected to vibration, impact or installation errors.

[0057] The present invention further provides an air conditioner, comprising necessary components such as an air conditioner outdoor unit and an air conditioner indoor unit, and the air conditioner outdoor unit comprises the above-mentioned electrical box structure.

[0058] By using this structure, the air conditioner can effectively prevent rainwater from entering the terminal board through reasonable design of rainproof openings, guide strips and inclined plates, reducing the risk of short circuit.

[0059] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0061] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electrical box structure, comprising: A first PCB assembly is vertically arranged in the external unit, and a connecting plate is connected between the first PCB assembly and the bottom of the external unit handle, wherein a portion of the connecting plate close to the external unit handle side is provided with a rainproof opening, and a lower edge of the rainproof opening is connected to an inclined plate inclined toward the first PCB assembly for installing a wiring board.

2. The electrical box structure according to claim 1, characterized in that: There are gaps between the two side edges of the inclined plate and the two ends of the lower edge of the rainproof opening.

3. The electrical box structure according to claim 1, characterized in that: The connecting plate is bent to form a first connecting portion for mounting a second PCB board and a second connecting portion for mounting the wiring board.

4. The electrical box structure according to claim 3, characterized in that: The second connecting portion is located at the two side edges of the rainproof opening to form two guide strips.

5. The electrical box structure according to claim 3, characterized in that: The lower part of the second connection part is bent outwards below the middle part to be divided into two sections, the upper part of the second connection part is connected to the upper part of the handle on the outer handle side, and the lower part of the handle on the outer handle side is provided with a connecting piece extending obliquely upward for connecting to the bottom of the second connection part.

6. The electrical box structure according to claim 3, characterized in that: A gap is left between the first connecting portion and the front side wall of the external unit to form a ventilation gap.

7. The electrical box structure according to claim 3, characterized in that: The first connecting portion is connected to an edge of the first PCB assembly and is bent to form a connecting edge, and the connecting edge and the second PCB board are bent to form a reinforcing step.

8. The electrical box structure according to claim 3, characterized in that: The first connecting portion is provided with a mounting opening for mounting the second PCB board.

9. The electrical box structure according to claim 1, characterized in that: The connecting plate is vertically bent to be divided into a first connecting portion and a second connecting portion, and the first connecting portion is vertically connected to the top of the first PCB assembly.

10. An air conditioner, characterized in that: The external unit of the air conditioner comprises the electrical box structure as described in any one of claims 1 to 9.

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