Electrical box device and air conditioner comprising same

Abstract

The invention provides an electrical box device and an air conditioner comprising the same, relates to the technical field of air conditioners, and solves the technical problems that components on a mainboard are poor in heat dissipation effect and easy to damage, and electrostatic dust adsorption is easy to fail. The electric appliance box device comprises a closed shell, a heating element arranged in the shell, heat dissipation holes formed in the shell and used for dissipating internal hot air, an active heat dissipation assembly installed in the shell, and a sweeping assembly in transmission connection with the active heat dissipation assembly and used for sweeping the heating element. The sweeping assembly and the active heat dissipation assembly share a driving structure. Under the condition that air inlet is not affected, large crawlers such as gecko are prevented from entering the circuit board to cause short circuit of the mainboard, so that the mainboard is protected; the mainboard can be protected, cooled and cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an electrical box device capable of realizing mainboard cleaning and protection, and an air conditioner comprising the same. Background Art

[0002] During the operation of the air conditioner, the mainboard, as the control element of the air conditioner, affects the operation of the entire air conditioner. However, sometimes some problems will limit the normal operation of the mainboard. Most of the circuit boards of existing air conditioners are exposed to the air, and there is no effective protection for the mainboard. When the air conditioner is running, the following problems may cause the circuit board to fail or be damaged: First, there are multiple components on the mainboard, which will generate heat during the operation, and the surface temperature of the components will rise. The greater the current, the higher the temperature. When the heat reaches a certain upper limit, it exceeds the safe temperature range and causes damage to the mainboard or even fire. Usually, when the external load is large or the air conditioner is running at a high frequency, the surface temperature of the components is high, which affects the operation of the air conditioner. If this temperature can be effectively reduced, the operation of the air conditioner can be improved and the possibility of fire or burning of the mainboard can be reduced. Secondly, due to the presence of static electricity on the mainboard, the surface of the components will absorb dust. After the air conditioner is used for a long time, the components on the mainboard carry static electricity, which will absorb dust in the air on its surface, thereby accumulating a large amount of dust. When the dust accumulates to a certain extent, it may cause the contact points of the components on the mainboard to fail, the components cannot work normally, and even cause a short circuit. At the same time, the dust covering the surface of the components will also cause the temperature to rise. However, most of the existing air conditioners are not designed to reduce the temperature of components. They only limit the temperature of components by limiting the operating current. There is no relevant design for cleaning the motherboard. When the outdoor unit is outdoors, insects may enter the motherboard, causing short circuit and damage to the motherboard. Summary of the invention

[0003] The purpose of the present invention is to provide an electrical box device that can realize mainboard cleaning and protection and an air conditioner containing the same, so as to solve the technical problems existing in the prior art that the components on the mainboard have poor heat dissipation effect, are easy to be damaged, and have electrostatic dust adsorption and are easy to fail.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides an electrical box device, comprising a closed shell, a heating element arranged in the shell, heat dissipation holes opened on the shell for dissipating internal heat, an active heat dissipation component installed in the shell, and a cleaning component that is transmission-connected to the active heat dissipation component for cleaning the heating element; the cleaning component and the active heat dissipation component share a common driving structure.

[0006] As a further improvement of the present invention, the active heat dissipation component includes a stepper motor, a fan housing, fan blades, a drive rod and a control unit; wherein:

[0007] The stepper motor is fixed on the housing and is transmission-connected to the fan blades to drive the fan blades to rotate forward or reversely;

[0008] The control unit is fixed on the fan housing to control the driving rod to perform power transmission or power separation;

[0009] One end of the driving rod is connected to the fan blade and the regulating unit, and the other end is contactably connected to the cleaning component. It can be extended and retracted relative to the cleaning component under the control of the regulating unit to transmit power when in contact and separate power when not in contact.

[0010] As a further improvement of the present invention, the control unit includes a ratchet and a pawl; wherein:

[0011] The fan housing is provided with a mounting hole;

[0012] The ratchet comprises a sleeve portion, a stop ring and a wheel portion; the sleeve portion is inserted into the mounting hole; and the inner diameter of the sleeve portion is larger than the outer diameter of the driving rod; the stop ring is located at one end of the sleeve portion and abuts against the outer wall of the fan housing; the wheel portion is located at the other end of the sleeve portion and abuts against the inner wall of the fan housing; the inner diameter of the wheel portion is equal to the outer diameter of the driving rod, so as to form a transmission connection structure between the two;

[0013] There are two ratchets, which are rotatably mounted on the fan housing, and the ends of which extend deep into the ratchet teeth on the outside of the wheel portion, so that the ratchet wheel can only rotate in one direction following the fan blades.

[0014] As a further improvement of the present invention, a first meshing thread segment is provided in the fan blade, and a first thread segment meshingly connected with the first meshing thread segment is provided at a corresponding position on the driving rod.

[0015] As a further improvement of the present invention, a second meshing thread segment is provided in the inner cavity of the wheel portion; and a second thread segment meshingly connected with the second meshing thread segment is provided on the driving rod.

[0016] As a further improvement of the present invention, there is a first straight rod section between the first threaded section and the second threaded section; there is also a second straight rod section between the second threaded section and the end of the driving rod; a third meshing threaded section is provided inside the cleaning assembly; when the first meshing threaded section meshes with the first threaded section and the second meshing threaded section meshes with the second threaded section, the second straight rod section is located in the third meshing threaded section inside the cleaning assembly, in a state of no power transmission; when the first meshing threaded section and the first threaded section, and the first straight rod section are located inside the second meshing threaded section, the second threaded section meshes with the third meshing threaded section, in a state of power transmission.

[0017] As a further improvement of the present invention, the cleaning assembly includes a connecting cylinder, a connecting rod, a guide rail unit and a brush; wherein:

[0018] The third meshing threaded section is provided inside the connecting cylinder;

[0019] The top end of the connecting rod is connected to the connecting cylinder, and the bottom end is rotatably connected to the guide rail unit;

[0020] The brush is fixed on the guide rail unit, and the end of the brush is in contact connection with the heating element.

[0021] As a further improvement of the present invention, the guide rail unit includes a slider, a horizontal slide rail and a vertical slide rail; wherein:

[0022] One end of the slider is rotatably connected to the connecting rod, and the other end is slidably connected to the horizontal slide rail and can move left and right along the horizontal slide rail;

[0023] The number of the vertical slide rails is two, which are oppositely arranged on both sides of the housing;

[0024] Both ends of the horizontal slide rail are slidably arranged inside the two vertical slide rails and can move up and down along the vertical slide rail.

[0025] As a further improvement of the present invention, the slider has a T-shaped structure and includes a rotating column, a limiting plate and a sliding block; wherein:

[0026] The end of the connecting rod has a rotating hole, and the rotating column is inserted into the rotating hole and can rotate relative to the rotating hole;

[0027] A concave first chute is provided inside the horizontal slide rail, and the sliding block is slidably arranged inside the first chute;

[0028] Both ends of the limiting plate are in contact with the horizontal slide rail and the connecting rod respectively.

[0029] As a further improvement of the present invention, a second slide groove is arranged in the vertical slide rail; a limiting groove is arranged in the second slide groove; a limiting convex strip matching the specification of the limiting groove is arranged at the end of the horizontal slide rail; rollers are also arranged at the ends of the horizontal slide rail at both sides of the limiting convex strip; the rollers are connected to the second slide groove in rolling contact.

[0030] The electrical box device provided by the present invention includes a closed shell, a stepper motor, a fan, a brush driven by a connecting rod device, two guide rails for limiting the movement of the brush, and a driving rod and a ratchet device connecting the connecting rod and the motor; when the air conditioner is running, the temperature of the surface of the component is reduced by the rotation of the fan; when the air conditioner stops running, the reverse rotation of the fan and the cooperation of the ratchet device make the driving rod extend and connect with the connecting rod of the brush, thereby driving the brush to move up and down to clean the mainboard. At the same time, the closed shell is designed with multiple narrow gaps, which prevent larger reptiles such as geckos from entering the circuit board and causing a short circuit on the mainboard without affecting the air intake, thereby protecting the mainboard; the device can complete the protection, cooling and cleaning functions of the mainboard.

[0031] The present invention provides an air conditioner, comprising the electrical appliance box device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 work.

[0033] Figure 1 It is a structural schematic diagram of the electrical box device in the air conditioner of the present invention;

[0034] Figure 2 yes Figure 1 Middle A is a partial enlarged view;

[0035] Figure 3 It is a side cross-sectional view of the driving rod in the electrical box device of the present invention in a power transmission state;

[0036] Figure 4 yes Figure 3 Middle B is a partial enlarged view;

[0037] Figure 5 yes Figure 3 Middle C is a partial enlarged view;

[0038] Figure 6 It is a side cross-sectional view of the driving rod in the electrical box device of the present invention in a power-disengaged state;

[0039] Figure 7 yes Figure 6 Middle D is a partial enlarged view;

[0040] Figure 8 is a top view of the electrical box device of the present invention;

[0041] Fig. 9 yes Figure 8 Middle E is a partial enlarged view;

[0042] Fig.10 It is a three-dimensional cross-sectional view of the electrical box device in the air conditioner of the present invention;

[0043] Fig.11 It is a front view of the electrical box device of the present invention;

[0044] Fig.12 yes Fig.11 Middle F is a partial enlarged view;

[0045] Fig.13 It is a structural schematic diagram of the mainboard in the electrical box device of the present invention;

[0046] Fig.14 It is a control flow chart of the air conditioner of the present invention.

[0047] In the figure, 1, housing; 2, mainboard; 3, heat dissipation hole; 4, active heat dissipation component; 41, stepper motor; 42, fan housing; 421, mounting hole; 43, fan blade; 431, first meshing thread section; 44, drive rod; 441, first thread section; 442, first straight rod section; 443, second thread section; 444, second straight rod section; 45, control unit; 451, ratchet; 4511, sleeve section; 4512, limit ring; 4513, wheel section; 4514, second meshing Engaging threaded section; 452, pawl; 5, cleaning assembly; 51, connecting tube; 511, third engaging threaded section; 52, connecting rod; 521, rotating hole; 53, guide rail unit; 531, slider; 5311, rotating column; 5312, limiting plate; 5313, sliding block; 532, horizontal slide rail; 5321, first slide groove; 5322, limiting convex strip; 5323, roller; 533, vertical slide rail; 5331, second slide groove; 5532, limiting groove; 54, brush. DETAILED DESCRIPTION

[0048] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0049] like Figure 1-Figure 14 As shown, the present invention provides an electrical box device, including a closed shell 1, a heating element arranged in the shell 1, a heat dissipation hole 3 opened on the shell 1 for dissipating internal heat, an active heat dissipation component 4 installed in the shell 1, and a cleaning component 5 that is transmission-connected to the active heat dissipation component 4 for cleaning the heating element; the cleaning component 5 and the active heat dissipation component 4 share a common driving structure.

[0050] It should be noted that in this embodiment, the heating element is the mainboard 2. Of course, it can also be other heating elements. For the convenience of description, the following specific description is taken as an example of the mainboard 2. By adopting a closed shell 1, the mainboard 2 can be protected; and in order to facilitate gas circulation, a number of heat dissipation holes 3 are opened on the shell 2. In order to prevent reptiles or small animals from entering the shell 1 and causing problems such as short circuit failure of the mainboard 1, the heat dissipation holes 3 of the present invention are narrow and long slit structures.

[0051] The cleaning component 5 and the active heat dissipation component 4 share a common driving structure, which means that they share a driving source. The transmission connection between the two can be achieved through the control unit 45, so that the same driving source can drive the cleaning component 5 and the active heat dissipation component 4 at the same time. The separation between the two can also be achieved through the control unit 45, so that the driving source can only drive the active heat dissipation component 4, and the cleaning component 5 is separated from the active heat dissipation component 4 by transmission.

[0052] Specifically, in this embodiment, if Figure 2-Figure 13 As shown, the active heat dissipation component 4 includes a stepper motor 41, a fan housing 421, fan blades 43, a driving rod 44 and a control unit 45; wherein:

[0053] The stepper motor 41 is fixed on the housing 1 and is in transmission connection with the fan blades 43 to drive the fan blades 43 to rotate forward or reverse;

[0054] The control unit 45 is fixed on the fan housing 421 to control the driving rod 44 to perform power transmission or power separation;

[0055] One end of the driving rod 44 is connected to the fan blade 43 and the regulating unit 45, and the other end is contactably connected to the cleaning component 5. It can be extended and retracted relative to the cleaning component 5 under the control of the regulating unit 45 to transmit power when in contact and separate power when not in contact.

[0056] like Figure 3-Figure 7 As shown, further, the regulating unit 45 includes a ratchet 451 and a pawl 452; wherein:

[0057] The fan housing 421 is provided with a mounting hole 421;

[0058] The ratchet 451 includes a sleeve portion 4511, a stop ring 4512 and a wheel portion 4513; the sleeve portion 4511 is inserted into the mounting hole 421; and the inner diameter of the sleeve portion 4511 is larger than the outer diameter of the driving rod 44; the stop ring 4512 is located at one end of the sleeve portion 4511 and abuts against the outer wall of the fan housing 421; the wheel portion 4513 is located at the other end of the sleeve portion 4511 and abuts against the inner wall of the fan housing 421; the inner diameter of the wheel portion 4513 is equal to the outer diameter of the driving rod 44, so as to form a transmission connection structure between the two;

[0059] There are two ratchet claws 452 rotatably mounted on the fan housing 421 , and the ends thereof penetrate into the ratchet teeth on the outside of the wheel portion 4513 , so that the ratchet wheel 451 can only rotate in one direction following the fan blades 43 .

[0060] In order to maintain the automatic reset of the pawl 452 , a reset spring is further provided between the pawl 452 and the fan housing 421 , and the reset spring can enable the pawl 452 to continue to return to its original position after being pushed by the ratchet teeth on the ratchet wheel 451 .

[0061] like Figure 3-Figure 4 As shown, the driving rod 431 is connected to the cleaning assembly 5 for power transmission. At this time, the driving rod 431 extends into the cleaning assembly 5, and can transmit the power of the stepping motor 41 to the cleaning assembly 5; Figure 6-Figure 7 As shown, the driving rod 431 is not connected to the cleaning component 5 and is in a power-disconnected state. At this time, the driving rod 431 is separated from the cleaning component 5, and the power of the stepper motor 41 cannot drive the cleaning component 5 to rotate. At this time, the power of the stepper motor 41 is used to drive the rotation of the active heat dissipation component 4 to dissipate heat from the mainboard 2.

[0062] like Figure 1-Figure 7 As shown, as a further improvement of the present invention, a first meshing thread segment 431 is provided in the fan blade 43 , and a first thread segment 441 meshingly connected with the first meshing thread segment 431 is provided at a corresponding position on the driving rod 44 .

[0063] Specifically, a second meshing thread segment 4514 is disposed in the inner cavity of the wheel portion 4513 ; and a second thread segment 443 meshingly connected with the second meshing thread segment 4514 is disposed on the driving rod 44 .

[0064] As an optional embodiment of the present invention, a first straight rod section 442 is provided between the first thread segment 441 and the second thread segment 443; a second straight rod section 444 is also provided between the second thread segment 443 and the end of the driving rod 44; a third meshing thread segment 511 is provided in the cleaning component 5; when the first meshing thread segment 431 and the first thread segment 441, and the second meshing thread segment 4514 and the second thread segment 443 are meshed and connected, the second straight rod section 444 is located in the third meshing thread segment 511 in the cleaning component 5, and is in a non-power transmission state; when the first meshing thread segment 431 and the first thread segment 441, and the first straight rod section 442 are located in the second meshing thread segment 4514, the second thread segment 443 and the third meshing thread segment 511 are meshed and connected, and is in a power transmission state.

[0065] As a further improvement of the present invention, Figure 1-Figure 13 As shown, the cleaning assembly 5 includes a connecting tube 51, a connecting rod 52, a guide rail unit 53 and a brush 54; wherein:

[0066] The third meshing thread section 511 is disposed in the connecting tube 51;

[0067] The top end of the connecting rod 52 is connected to the connecting tube 51, and the bottom end is rotatably connected to the guide rail unit 53;

[0068] The brush 54 is fixed on the guide rail unit 53 , and the end of the brush 54 is in contact with the main board 2 .

[0069] When the stepper motor 41 is in operation, it drives the connecting rod 52 to rotate 360 ​​degrees around the central axis of the driving rod 44. When the connecting rod 52 rotates, it drives the horizontal slide rail 532 to rise and fall vertically, thereby driving the brush 54 to clean the mainboard 2 when rising and falling.

[0070] like Figure 5 , Figure 8 and Fig. 9 As shown, the guide rail unit 53 includes a slider 531, a horizontal slide rail 532 and a vertical slide rail 533; wherein:

[0071] One end of the slider 531 is rotatably connected to the connecting rod 52, and the other end is slidably connected to the horizontal slide rail 532, and can move left and right along the horizontal slide rail 532;

[0072] There are two vertical slide rails 533, which are arranged on two sides of the housing 1 opposite to each other;

[0073] Both ends of the horizontal slide rail 532 are slidably disposed in two vertical slide rails 533 , respectively, and can be lifted up and down along the vertical slide rails 533 .

[0074] As a further improvement of the present invention, Figure 5As shown, the slider 531 has a T-shaped structure, including a rotating column 5311, a limiting plate 5312, and a sliding block 5313; where:

[0075] The end of the connecting rod 52 has a rotating hole 521, and the rotating column 5311 is inserted into the rotating hole 521 and can rotate relative to the rotating hole 521;

[0076] A concave first sliding groove 5321 is provided in the horizontal sliding rail 532, and the sliding block 5313 is slidably arranged in the first sliding groove 5321;

[0077] Both ends of the limiting plate 5312 are respectively in contact with the horizontal sliding rail 532 and the connecting rod 52.

[0078] As Fig. 9 shown, as a further improvement of the present invention, a second sliding groove 5331 is provided in the vertical sliding rail 533; a limiting groove 5332 is provided in the second sliding groove 5331; a limiting rib 5322 adapted to the specification of the limiting groove 5332 is provided at the end of the horizontal sliding rail 532; rollers 5323 are respectively provided at positions on both sides of the limiting rib 5322 at the end of the horizontal sliding rail 532; the rollers 5323 are in rolling contact connection with the second sliding groove 5331.

[0079] The electric box device provided by the present invention includes a closed outer shell 1, a stepping motor 41, a fan, a brush 54 driven by a connecting rod 52 device, two guide rails for restricting the movement of the brush 54, and a driving rod 44 connecting the connecting rod 52 and the motor and a ratchet 451 device; when the air conditioner is running, the temperature of the surface of the components is reduced by the rotation of the fan; when the air conditioner stops running, through the cooperation of the reverse rotation of the fan and the ratchet 451 device, the driving rod 44 extends to connect with the connecting rod 52 of the brush 54, and then drives the brush 54 to move up and down to clean the main board 2. At the same time, the closed outer shell 1 is designed with a plurality of narrow gaps, which can prevent larger reptiles such as geckos from entering the circuit board and causing a short circuit of the main board 2 without affecting the air intake, thereby protecting the main board 2; the device can complete the functions of protecting, cooling, and cleaning the main board 2.

[0080] As Figure 1-Figure 13 shown, an air conditioner provided by the present invention includes the above-mentioned electric box device.

[0081] As Figure 1 shown, the electric box device is composed of a stepping motor 41, a fan, a driving rod 44, a ratchet 451, a pawl 452, a connecting rod 52, a brush 54, a guide rail unit 53, and an electric box outer shell 1. A plurality of narrow gaps, that is, heat dissipation holes 3, are designed on the outer shell 1 to allow air to circulate. The fan is protected by the outer shell 1, and at the same time, the connecting rod 52, the ratchet 451, and the fan are fixed on the same center through the driving rod 44 and the outer shell 1.

[0082] Control unit 45 Figure 2 As shown, the ratchet wheel 451 has a first meshing thread section 431 inside and two ratchet claws 452 above and below. Figure 4 As shown, from the side, the ratchet 451 is designed as a concave structure, and the concave part cooperates with the fan housing 421, so as to be fixed on the fan housing 421, but at the same time, the ratchet 451 is allowed to rotate. The pawl 452 is also fixed on the fan housing 421, and a return spring is set on the connecting rod between the pawl 452 and the fan housing 421 to ensure that the pawl 452 will rebound to the initial position after each rotation. Fig.12 As shown, the ratchet teeth on the ratchet wheel 451 are designed as an asymmetric trapezoidal structure, and the movement of the ratchet wheel 451 is controlled by the cooperation between the ratchet teeth on the ratchet wheel 451 and the pawl 452. When the ratchet wheel 451 rotates forward, the ratchet teeth of the ratchet wheel 451 will push the upper and lower pawls 452 to rotate, so that the ratchet teeth on the ratchet wheel 451 can pass through the pawl 452 without affecting the rotation of the ratchet wheel 451. When the ratchet wheel 451 rotates reversely, the upper and lower pawls 452 will resist the ratchet wheel 451, making the ratchet wheel 451 unable to rotate, thereby realizing the unidirectional rotation of the ratchet wheel 451.

[0083] The structure of the active heat dissipation component 4 is as follows Figure 1-Figure 4 As shown, the fan blade 43, the ratchet 451, and the connecting rod 52 are connected to form a transmission structure through the driving rod 44. The driving rod 44 is a threaded rod, and a threaded part is provided on the outside of the driving rod. Figure 4 The front end of the driving rod 44 is a second straight rod section 444 without threads, and the back is a second threaded section 443, a first straight rod section 442, and a first threaded section 441 with threads, no threads, and threads interlaced, respectively. The threads correspond to other devices, so that they are engaged or not engaged in the set stage. When the driving rod 44 rotates in the reverse direction, it will move toward the axial hole on one side of the connecting tube 51, so that the driving rod 44 is engaged with the connecting rod 52, and then drives the connecting rod 52 to move. When it rotates in the forward direction, it will move in the opposite direction of the connecting rod 52, so that it is disconnected from the connecting rod 52, and then the driving rod 44 cannot drive the connecting rod 52 to move. Figure 7This is the state before the blades start to operate normally. At this time, the front end of the driving rod 44, which is the non-threaded part, is connected to the connecting tube 51 at the top of the connecting rod 52, for fixing the connecting rod 52, and the rear threaded part, which is the first threaded section 441 and the second threaded section 443, is respectively engaged with the ratchet 451 and the first meshing threaded section 431 and the second meshing threaded section 4514 of the blade 43. When the stepper motor 41 operates normally, the blade 43 rotates with the internal driving rod 44, and at this time, the second threaded section 443 on the driving rod 44 is in meshing state with the second meshing threaded section 4514 inside the ratchet 451, and the ratchet 451 can rotate forward. It is equivalent to that at this time, the blade 43 rotates with the ratchet 451 through the driving rod 44, and the driving rod 44 will not extend to connect with the connecting tube 51 at the top of the connecting rod 52, and the connecting rod 52 device is immobile. When the fan is reversed, the fan blade 43 rotates with the internal driving rod 44. Since the ratchet 451 is restricted and cannot rotate in the opposite direction, the driving rod 44, through the second meshing thread segment 4514 in the ratchet 451, acts like a rotating bolt and a fixed nut, and extends to engage with the third meshing thread segment 511 in the connecting tube 51 at the top of the connecting rod 52, thereby driving the connecting rod 52 to rotate until the driving rod 44 extends into the connecting tube 51, and the first straight rod segment 442 on the driving rod 44 overlaps with the ratchet 451, so that the ratchet 451 will not be subjected to force and cause problems such as damage. Figure 4 shown.

[0084] The cleaning assembly 5 is composed of a connecting rod 52, a slider 531, a brush 54 and a guide rail unit 53. Figure 6 and Figure 7 As shown, one end of the connecting tube 51 at the top of the connecting rod 52 is connected to the fan blade 43 by the driving rod 44. A third meshing thread section 511 is provided in the center of the connecting tube 51 to facilitate the driving rod 44 to drive the connecting rod 52 to move. The other end is connected to the slider 531 in the guide rail unit 53 on the back of the brush 54 to ensure that the connecting rod 52 can drive the brush 54 to move when it rotates. The connecting rod 52 and the slider 531 are combined into a connecting rod device. The structure of the slider 531 is shown in FIG. Figure 5As shown, the front end of the slider 531 is a rectangular structure, that is, the sliding block 5313 is embedded in the horizontal slide rail 532 on the back of the brush 54, so that the slider 531 can maintain linear motion in the horizontal slide rail 532, and two grooves are designed on both sides of the middle part of the slider 531, that is, between the limit plate 5312 and the sliding block 5313, so that the slider 531 can be stuck on the horizontal slide rail 532 and not fall off. The rear end of the slider 531, that is, the rotating column 5311 is fixed with the rotating hole 521 at the bottom of the connecting rod 52 in an axial hole matching manner, so that the connecting rod 52 can rotate around the circular axis at the rear end of the slider 531, that is, the rotating column 5311. When the connecting rod 52 rotates, the slider 531 can convert part of the rotating force into a force for sliding left and right on the horizontal slide rail 532, so that it can drive the brush 54 to move in parallel during movement, thereby cleaning the surface of the mainboard 2.

[0085] Two vertical slide rails 533 are arranged on both sides of the electrical box housing 1 to ensure that the brush 54 can move up and down. Fig. 9 The figure shows the part of the brush 54 at the vertical rail 533. Two rollers 5323 are inserted into one side of the horizontal rail 532, and the up and down movement of the brush 54 in the vertical rail 533 is converted into the rolling of the two rollers 5323, which reduces the friction during movement. The brush 54 and the horizontal rail 532 are designed as a convex structure, and the protruding part is inserted into the second slide groove 5331 designed on the vertical rail 533 to ensure that the brush 54 can move in a straight line. When the connecting rod 52 rotates, the slider 531 on the horizontal rail 532 on the back of the brush 54 slides left and right, and the brush 54 moves up and down along the vertical rail 533 on the electrical box housing 1, so as to achieve the purpose of brushing the mainboard 2 up and down.

[0086] like Fig.13 As shown, the wires on the main board 2 are routed along the edge and enter and exit from one outlet to prevent the wires from being blocked when the brush 54 is brushing.

[0087] like Fig.14 As shown, the control logic of the air conditioner of the present invention is:

[0088] When the air conditioner is running, the stepper motor 41 drives the fan blades 43 to start rotating, cooling the components on the main board 2, making the air conditioner run more stably and safely. At this time, the second thread segment 443 and the first thread segment 441 of the driving rod 44 are simultaneously engaged with the second meshing thread segment 4514 at the center of the ratchet 451 and the first meshing thread segment 431 at the center of the fan blades 43. The driving rod 44 rotates with the rotation of the fan blades 43, and the ratchet 451 can move forward, so the fan, the driving rod 44, and the ratchet 451 rotate forward together, and the driving rod 44 will not extend to connect with the connecting rod device, and the connecting rod device is in a disconnected state.

[0089] When the air conditioner stops running, the function of cleaning the main board 2 can be started. First, the stepper motor 41 will reverse, driving the driving rod 44 to reverse. Since the ratchet 451 meshed with the driving rod 44 cannot be reversed due to the limitation of the pawl 452, the second threaded section 443 of the driving rod 44 cooperates with the second meshing threaded section 4514 of the ratchet 451, so that the driving rod 44 moves forward and extends. Continue to rotate until the second threaded section 443 on the driving rod 44 begins to mesh with the connecting rod device. When the driving rod 44 rotates to the top of the connecting rod device, at this time, the second threaded section 443 on the driving rod 44 meshes with the third meshing threaded section 511, and the first threaded section 441 meshes with the first meshing threaded section 431 at the center of the fan blade 43, so that the stepper motor 41 drives the fan blade 43 and the connecting rod 52 to rotate. The ratchet 451 is the first straight rod section 442, which will not mesh with the second meshing threaded section 4514, so that the ratchet 451 will not be constantly stressed and damaged, and the operation of the entire device will not be affected. When the connecting rod device starts to rotate, the slider 531 of the horizontal slide rail 532 on the back of the brush 54 connected to the other end of the connecting rod 52 will also be forced to start moving. Due to the restrictions of the vertical slide rail 533 on the electrical box for the brush 54 to move up and down and the horizontal slide rail 532 on the back of the brush 54, the slider 531 will be converted into horizontal and vertical forces by the rotation of the connecting rod 52. While the slider 531 slides to the left on the horizontal slide rail 532 on the back of the brush 54, it drives the brush 54 to slide upward on the vertical slide rail 533 on the electrical box. After reaching the top, the slider 531 moves to the right again, and drives the brush 54 to move downward at the same time, and repeats. The connecting rod 52 rotates one circle to make the brush 54 brush up and down on the main board 2 once, and the brush 54 continues to brush up and down when it continues to rotate, so as to achieve the purpose of cleaning the main board 2. After the thread on the driving rod 44 is meshed with the thread inside the connecting rod 52, the motor drives the fan blade 43 to drive the driving rod 44 and the connecting rod 52 to rotate concentrically, and can rotate 360 ​​degrees.

[0090] When cleaning is finished, the stepper motor 41 is controlled to rotate forward so that the teeth of the connecting rod 52 and the driving rod 44 are no longer engaged, and the movement of the brush 54 is no longer affected by the stepper motor. Since the connecting rod device needs a more obvious force drive when moving (the friction force when the thread is tightened can be designed to be as small as possible), under the action of the friction force of the connecting rod 52 and the movement of the brush 54, the lower end of the threaded rod is equivalent to being subjected to a resistance. When the fan blade 43 rotates forward, the driving rod 44 can be retracted under the action of the thread, so that it is disconnected from the connecting rod 52. After the external thread of the driving rod 44 and the internal thread of the connecting rod 52 are withdrawn from the matching, the brush 54 can slide down to the lowest position by itself under the action of its own gravity, and finally stop the motor rotation. In this way, the initial state is restored, and the process of cleaning is completed.

[0091] The air conditioner of the present invention includes an electrical box device. When the air conditioner is in operation, the fan rotates to cool the main board 2. When the air conditioner stops operating, the stepper motor controls the disconnection of the driving rod 44 and the connecting rod device, thereby driving the brush 54 to clean the main board 2. The electrical box device of the present invention can protect the main board 2, prevent reptiles or small animals from entering the circuit board and causing short circuit faults, and can cool the main board 2 when the air conditioner is in operation to prevent the main board 2 from being overheated and affecting the normal operation of the machine or causing safety problems; the electrical appliance and device can also clean the main board 2, solving the problems of dust accumulation on the main board 2 causing the temperature of the components of the main board 2 to rise, the main board 2 to short circuit, etc.

[0092] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electrical box device, characterized in that: It includes a closed shell, a heating element arranged in the shell, heat dissipation holes opened on the shell for dissipating internal heat, an active heat dissipation component installed in the shell, and a cleaning component that is transmission-connected to the active heat dissipation component for cleaning the heating element; the cleaning component and the active heat dissipation component share a common driving structure.

2. The electrical box device according to claim 1, characterized in that: The active heat dissipation component includes a stepper motor, a fan housing, fan blades, a drive rod and a control unit; wherein: The stepper motor is fixed on the housing and is transmission-connected to the fan blades to drive the fan blades to rotate forward or reversely; The control unit is fixed on the fan housing to control the driving rod to perform power transmission or power separation; One end of the driving rod is connected to the fan blade and the regulating unit, and the other end is contactably connected to the cleaning component. It can be extended and retracted relative to the cleaning component under the control of the regulating unit to transmit power when in contact and separate power when not in contact.

3. The electrical box device according to claim 2, characterized in that: The control unit includes a ratchet and a pawl; wherein: The fan housing is provided with a mounting hole; The ratchet comprises a sleeve portion, a stop ring and a wheel portion; the sleeve portion is inserted into the mounting hole; and the inner diameter of the sleeve portion is larger than the outer diameter of the driving rod; the stop ring is located at one end of the sleeve portion and abuts against the outer wall of the fan housing; the wheel portion is located at the other end of the sleeve portion and abuts against the inner wall of the fan housing; the inner diameter of the wheel portion is equal to the outer diameter of the driving rod, so as to form a transmission connection structure between the two; There are two ratchets, which are rotatably mounted on the fan housing, and the ends of which extend deep into the ratchet teeth on the outside of the wheel portion, so that the ratchet wheel can only rotate in one direction following the fan blades.

4. The electrical box device according to claim 3, characterized in that: A first meshing thread segment is arranged in the fan blade, and a first thread segment meshingly connected with the first meshing thread segment is arranged at a corresponding position on the driving rod.

5. The electrical box device according to claim 4, characterized in that: A second meshing thread segment is arranged in the inner cavity of the wheel portion; and a second thread segment meshingly connected with the second meshing thread segment is arranged on the driving rod.

6. The electrical box device according to claim 5, characterized in that: There is a first straight rod section between the first thread section and the second thread section; there is also a second straight rod section between the second thread section and the end of the driving rod; a third meshing thread section is arranged in the cleaning component; when the first meshing thread section and the first thread section, and the second meshing thread section and the second thread section are meshed and connected, the second straight rod section is located in the third meshing thread section in the cleaning component, and is in a state of no power transmission; when the first meshing thread section and the first thread section, and the first straight rod section are located in the second meshing thread section, the second thread section and the third meshing thread section are meshed and connected, and is in a state of power transmission.

7. The electrical box device according to claim 6, characterized in that: The cleaning assembly comprises a connecting tube, a connecting rod, a guide rail unit and a brush; wherein: The third meshing thread section is arranged in the connecting tube; The top end of the connecting rod is connected to the connecting tube, and the bottom end is rotatably connected to the guide rail unit; The brush is fixed on the guide rail unit, and the end of the brush is in contact with and connected to the heating element.

8. The electrical box device according to claim 7, characterized in that: The guide rail unit includes a slider, a horizontal slide rail and a vertical slide rail; wherein: One end of the slider is rotatably connected to the connecting rod, and the other end is slidably connected to the horizontal slide rail, and can move left and right along the horizontal slide rail; The number of the vertical slide rails is two, which are oppositely arranged on both sides of the housing; Both ends of the horizontal slide rail are slidably arranged in the two vertical slide rails respectively, and can move up and down along the vertical slide rail.

9. The electrical box device according to claim 8, characterized in that: The slider has a soil-shaped structure, including a rotating column, a limiting plate and a sliding block; wherein: The end of the connecting rod has a rotating hole, and the rotating column is inserted into the rotating hole and can rotate relative to the rotating hole; A concave-shaped first chute is arranged in the horizontal slide rail, and the sliding block is slidably arranged in the first chute; Both ends of the limiting plate are respectively abutted against the horizontal slide rail and the connecting rod.

10. The electrical box device according to claim 8, characterized in that: A second chute is arranged in the vertical slide rail; a limiting groove is arranged in the second chute; a limiting rib adapted to the specification of the limiting groove is arranged at the end of the horizontal slide rail; rollers are respectively arranged at positions on both sides of the limiting rib at the end of the horizontal slide rail; the rollers are in rolling contact connection with the second chute.

11. An air conditioner, characterized in that: Including the electrical box device according to any one of claims 1-10.

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