Solar attic fan

Abstract

The invention relates to a solar attic fan which comprises a shell assembly, a fan device and a solar power supply device used for supplying power to the fan device, the shell assembly is assembled on an attic roof and is hollow, the fan device comprises a driving device and a fan blade assembly, and a liftable mounting frame assembly is arranged in the shell assembly; the driving device is connected with the mounting frame assembly through a torque transmission piece, the solar power supply device is assembled at the other end of the driving device and electrically connected with the driving device through a power supply module, a movable gap is formed between the fan device and the solar power supply device, and the mounting frame assembly is configured to sense the temperature in the shell assembly. When the temperature rises, the mounting frame assembly drives the driving device to rise and be far away from the fan blade assembly, so that wind resistance is reduced, the movable gap is increased, and the flow of airflow passing through the solar power supply device and the driving device is increased to assist heat dissipation.

Description

Technical Field

[0001] The present application relates to the technical field of building fans, and in particular to a solar attic fan. Background Art

[0002] Existing attic fans are generally installed on the roof, gables, or are ventilation equipment specifically used to exhaust hot air from the attic. Their core function is to lower the attic temperature, reduce the air conditioning load, and extend the life of the roofing materials. Due to the large floor area of ​​the attic, the fan generally needs to be used in conjunction with the attic ventilation system. When using solar energy to assist in powering the attic fan, the solar panel is generally exposed on the outside of the roof to ensure its sunlight exposure efficiency. In order to miniaturize the device, the fan and solar panel are generally integrated together.

[0003] The existing technology involves a solar electric fan, which includes a solar cell assembly and a fan assembly installed at one end of a motor. The fan assembly includes a main shaft connected to the motor, main blades connected to the main shaft, and auxiliary blades. The auxiliary blades are installed in the axial position of the main shaft, and the main blades are installed in the radial position of the main shaft so as to blow air around, diagonally below, and directly below the fan.

[0004] Although the above technology utilizes solar energy, when it is applied to attic buildings, in order to ensure the photovoltaic efficiency of the solar panels, they are generally exposed on the outside of the roof, and their surface temperature is relatively high. Excessively high temperature will lead to lower photovoltaic conversion efficiency of the solar panels, less converted electricity, and poor energy saving. Summary of the Invention

[0005] The present application provides a solar attic fan, which can solve the problem that the existing solar fans have low photovoltaic power generation efficiency and unsatisfactory energy saving performance due to the excessively high internal temperature of the device during use.

[0006] The technical solution of this application is as follows: A solar attic fan, comprising: A shell component is mounted on the attic roof and is hollow inside; A fan device, comprising a drive device and a fan blade assembly, a liftable mounting frame assembly being provided inside the housing assembly, and the drive device and the mounting frame assembly being connected via a torque transmission member; a solar power supply device for supplying power to the fan device, the solar power supply device being mounted on the other end of the driving device and being electrically connected to the driving device via a power supply module; A movable gap is provided between the fan device and the solar power supply device, and the mounting frame assembly is configured to sense the temperature inside the housing assembly. When the temperature rises, the mounting frame assembly drives the driving device to rise and away from the fan blade assembly to reduce wind resistance, while increasing the movable gap and increasing the flow rate of airflow through the solar power supply device and the driving device to assist in heat dissipation.

[0007] By adopting the above scheme, if the temperature inside the shell assembly is too high due to abnormal operation of the fan device, the mounting frame assembly can sense the abnormal temperature and drive the driving device to rise, and at the same time drive the solar power supply device to rise, so that the driving device is away from the fan blade assembly to reduce the obstruction of the airflow above the fan blade assembly by the motor. At the same time, due to the rise of the solar power supply device, the movable gap is increased, thereby increasing the flow rate of the external airflow passing through the solar power supply device and the driving device. The airflow can take away part of the heat of the solar power supply device and the driving device itself, thereby improving the heat dissipation capacity of the solar power supply device and the driving device, and at the same time increasing the air intake area of ​​the device, so that when the fan blade assembly is at the same speed, the resistance encountered by the airflow when entering the device is further reduced, thereby improving the power generation efficiency of the solar power supply device while reducing the power consumption of the fan device.

[0008] In one embodiment of the present application, the mounting frame assembly includes: A plurality of fixing frames, wherein the housing component is a columnar component, the plurality of fixing frames are arranged inside the housing component at intervals along the circumference of the housing component, and a plurality of circumferentially spaced gaps are formed between the plurality of fixing frames and the housing component; A temperature sensing component, wherein a rectangular chute extending in a vertical direction is provided on a side of the fixing frame facing away from the housing component, and the temperature sensing component is assembled in the rectangular chute; A lifting block, one side of which is slidably assembled in the rectangular slide groove along the up and down directions, the temperature sensing component is configured to sense the temperature increase inside the shell component and drive the lifting block to rise, and the other side of the lifting block is connected to the driving device.

[0009] By adopting the above solution, using the fixing frame and the temperature sensing component, when the temperature inside the housing component rises to the threshold value causing the temperature sensing component to operate, the temperature sensing component drives the lifting block to rise, and then the lifting block drives the driving device to rise.

[0010] In one embodiment of the present application, the temperature sensing component includes: A bimetallic strip, wherein the bottom side wall of the rectangular chute is provided with a rectangular groove, and the bimetallic strip is assembled in the rectangular groove; A moving block is slidably assembled on the inner wall of the bottom end of the rectangular slide along the radial direction of the shell component. A first inclined surface is provided at the top of the moving block, and a second inclined surface is provided at the bottom end of the lifting block that matches the shape of the first inclined surface. When the temperature inside the shell component rises, the bimetallic strip is configured to drive the moving block to move toward the central axis of the shell component, so that the first inclined surface and the second inclined surface conflict with each other to drive the lifting block to rise.

[0011] By adopting the above-mentioned scheme, by using a bimetallic strip and utilizing the principle of bimetal expansion and deformation due to heat, the bimetallic strip can drive the moving block to move along the radial direction of the outer shell assembly, and by utilizing the cooperation between the moving block and the lifting block, the device can sense the internal temperature of the device and drive the entire driving device to rise without consuming additional energy.

[0012] In one embodiment of the present application, the driving device includes: A motor outer compartment is provided inside the motor outer compartment, a drive shaft of the motor extends out of one end of the motor outer compartment, and the other side of a plurality of lifting blocks are fixedly assembled on the outer wall of the motor outer compartment at intervals along the circumferential direction; A threaded bin cover, wherein an annular threaded groove is coaxially opened on the outside of the other end of the motor outer bin, and the threaded bin cover is screwed into the threaded groove. The threaded bin cover is provided with an angle adjustment member and is connected to the solar power supply device through the angle adjustment member.

[0013] By adopting the above scheme, the driving device is set as a detachable motor outer layer and threaded bin cover, and the motor and solar power supply device are respectively arranged on the motor outer layer and the threaded bin cover, so that the device can easily disassemble the solar power supply device from the motor outer bin, which is convenient for later maintenance. At the same time, a gap can be formed between the motor outer bin and the threaded bin cover, which is convenient for subsequent adjustment of the angle between the solar power supply device and the motor outer bin.

[0014] In one embodiment of the present application, the fan blade assembly includes: The bracket is mounted on the inner wall of the housing component at one end. The fan blade is equipped with a tapered roller bearing coaxial with the drive shaft of the motor. One side of the fan blade is connected to the inner ring of the tapered roller bearing. The fan blade is located below the ventilation hole, and the other side of the fan blade is connected to the motor through a torque transmission member.

[0015] By adopting the above solution, by setting the fan blades on the bracket and assembling the bracket on the shell assembly, the bracket can support the weight of the fan blades, reducing the axial traction force of the fan blades on the motor drive shaft, thereby reducing the friction resistance encountered by the motor drive shaft during rotation and reducing the power consumption of the motor.

[0016] In one embodiment of the present application, the torque transmission member includes: An extension tube, the extension tube being arranged on the other side of the fan blade, the extension tube being provided with an annular strip key groove along the circumference of its inner wall; The cutting rod is coaxially fixedly assembled on the driving shaft of the motor, and the cutting rod is circumferentially provided with a key bar that is adapted to the shape of the strip key groove.

[0017] By adopting the above-mentioned scheme, the cutting rod is inserted into the extension tube, and the mutual engagement between the key bar and the strip key groove is utilized to achieve circumferential engagement between the cutting rod and the extension tube, so that the cutting rod can ensure relative displacement in the axial direction of the extension tube while the drive shaft of the motor can transmit torque to the extension tube to drive the fan blades to rotate.

[0018] In one embodiment of the present application, the solar power supply device includes a snap-fit ​​cover, a bowl-shaped chamber is provided inside the snap-fit ​​cover, one side of the snap-fit ​​cover is connected to the angle adjustment member, and the other side is provided with a solar panel, and the solar panel is electrically connected to the driving device.

[0019] By adopting the above solution, by setting the snap-fit ​​cover into a bowl-shaped component, and utilizing the snap-fit ​​cover of the bowl-shaped component, when it is pressed down, the edge of the snap-fit ​​cover is buckled on the edge of the columnar outer shell component, thereby ensuring that rainwater will not enter the interior of the outer shell component when it rains.

[0020] In one embodiment of the present application, the angle adjustment member includes: A hollow spherical frame, wherein a cylindrical cavity is formed inside the threaded bin cover, the hollow spherical frame is assembled to the outside of the threaded bin cover and communicates with the cylindrical cavity, a fixed filling medium is provided inside the cylindrical cavity, a piston column is slidably sealed inside the cylindrical cavity, one end of the piston column extends out of the cylindrical cavity and contacts the outer compartment of the motor; A deflection ball is disposed inside the hollow spherical frame, with one end of the deflection ball away from the cylindrical cavity protruding from the hollow spherical frame and the other end of the deflection ball being fixedly connected to a plurality of resistance sheets, one end of each resistance sheet extending into the cylindrical cavity; An assembly plate, one side of which is fixedly assembled on one end of the deflection ball, and the other side of which is connected and fixed to the buckled cover plate.

[0021] By adopting the above scheme, when it is necessary to adjust the angle of the solar panel according to the seasonal changes in sunlight, the threaded bin cover is first unscrewed upwards. At this time, one end of the piston column no longer presses against the motor outer bin, and the volume between the piston column and the columnar cavity becomes larger. At this time, the solid filling medium becomes loose because it is no longer subjected to the force of mutual extrusion, and the deflection ball can deflect and rotate inside the hollow spherical frame. At this time, the angle of the solar panel can be adjusted according to the installation position of the device and the angle of sunlight. After the adjustment is completed, the threaded bin cover is screwed on the outside of the motor outer bin again. After being squeezed by the motor outer bin, the piston column squeezes the loose solid filling medium into blocks again, thereby fixing the resistance sheet of the deflection ball, and then fixing the deflection ball so that it will not deflect, so that the device only uses the threaded screwing action between the threaded bin cover and the motor outer bin to enable the device to fix the solar power supply device on the outer shell assembly and fix its angle at the same time.

[0022] In one embodiment of the present application, an annular dustproof assembly is further included, and the dustproof assembly includes: a first elastic ring, the first elastic ring being coaxially assembled on the inner wall of the other end of the housing assembly; an annular dustproof net, the outer ring of which is coaxially fixedly assembled on the inner wall of the first elastic ring; The second elastic ring and the inner ring of the annular dustproof net are coaxially sleeved on the motor outer compartment and are connected and fixed to the motor outer compartment.

[0023] By adopting the above solution and providing an elastic dustproof component, the dustproof component can be adaptively stretched when the snap cover is raised, thereby ensuring its own dustproof effect while meeting the deformation requirements of the device.

[0024] An annular groove is coaxially formed on the inner wall of the buckled cover plate, and an annular hydrogel is arranged inside the annular groove.

[0025] By adopting the above solution, when external moisture penetrates into the gap between the snap-fit ​​cover plate and the housing assembly, the annular hydrogel swells when it comes into contact with water and fills the gap, thereby reducing the possibility of water ingress into the device during rain.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By arranging a solar power supply device and a fan device that are distributed and movable up and down, the device can use the heat generated by the solar power supply device and the fan device themselves during operation as a signal without consuming additional electricity. When the temperature inside the shell component rises to a preset threshold, the deformation of the bimetallic strip caused by the temperature can drive the fan device and the solar power supply device to rise, thereby allowing more air to flow through the back of the solar power supply device and pass through the fan device at the same time, thereby improving the heat dissipation efficiency, increasing the air intake area, and reducing wind resistance. Therefore, the entire device improves energy saving while maintaining the original working efficiency.

[0027] 2. By setting up a detachable fan blade assembly, the fan blades can be driven to rotate by the motor while the weight of the fan blades themselves will act on the bracket, thereby avoiding the fan blades from generating axial traction on the motor due to their own weight, and further avoiding the additional friction resistance generated between the motor drive shaft and the motor housing due to the action of the axial force. This allows the motor to meet its own lifting needs while avoiding damage to the motor due to axial traction, and can also improve its own energy efficiency.

[0028] 3. By providing a motor outer compartment and a threaded compartment cover, and by arranging the solar power supply device on the threaded compartment cover, the solar power supply device can be fixed in position through the threaded connection between the threaded compartment cover and the motor outer compartment. At the same time, while fixing the solar power supply device, as the threaded compartment cover is continuously screwed in, the piston column can compress the solid filling medium inside the columnar cavity, thereby utilizing the compressed solid filling medium to fix the resistance sheet under the deflection ball, so that the deflection ball itself will not deflect, thereby enabling the solar power supply device to be fixed in angle when in a fixed position. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of a solar attic fan provided in the first embodiment of the present application; Figure 2 This is a front cross-sectional view of a solar attic fan provided by the first embodiment of the present application when the cover is lowered; Figure 3 This is a front cross-sectional view of a solar attic fan provided by the first embodiment of the present application when the cover is buckled and raised; Figure 4 is a front cross-sectional view of a solar attic fan mounting bracket assembly provided by the first embodiment of the present application; Figure 5 This is a front cross-sectional view of a solar attic fan provided by the first embodiment of the present application when the solid filling medium is loose; Figure 6This is a front cross-sectional view of a solar attic fan provided by the first embodiment of the present application when the solid filling medium is compressed; Figure 7 This is a top cross-sectional view of a solar attic fan extension tube provided in the first embodiment of the present application; Figure 8 This is a top view of an outer compartment of a solar attic fan motor provided in the first embodiment of the present application; Figure 9 This is a three-dimensional diagram of a solar attic fan dustproof assembly provided in the first embodiment of the present application; Figure 10 This is a three-dimensional diagram of a ring-shaped hydrogel for a solar attic fan provided in the first embodiment of the present application.

[0030] Explanation of the reference numerals: 1. housing assembly; 11. ventilation hole; 2. fan device; 21. driving device; 211. motor outer compartment; 2110. motor; 2111. threaded groove; 212. threaded compartment cover; 2121. cylindrical cavity; 2122. fixed filling medium; 22. fan blade assembly; 221. bracket; 222. fan blade; 223. tapered roller bearing; 23. angle adjustment member; 231. hollow spherical frame; 232. piston column; 233. deflection ball; 234. resistance plate; 235. assembly plate; 24. torque transmission member; 241. extension tube ; 2411, strip keyway; 242, insertion rod; 2421, key bar; 3, mounting frame assembly; 31, fixing frame; 311, rectangular slide; 3111, rectangular groove; 32, temperature sensing assembly; 321, bimetallic strip; 322, moving block; 3221, first inclined surface; 33, lifting block; 331, second inclined surface; 4, movable gap; 5, solar power supply device; 52, snap-fit ​​cover; 521, annular hydrogel; 53, solar panel; 6, dustproof assembly; 61, first elastic ring; 62, annular dustproof net; 63, second elastic ring. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1-10 The solar attic fan provided in this application is described in further detail.

[0032] A solar attic fan provided in an embodiment of the present application includes: a housing assembly 1, a fan device 2 and a solar power supply device 5.

[0033] See also Figure 1 、 Figure 2 and Figure 3The housing assembly 1 is mounted on the roof of the attic and is hollow inside. The fan device 2 includes a drive device 21 and a fan blade assembly 22. A liftable mounting frame assembly 3 is provided inside the housing assembly 1. The drive device 21 is connected to the mounting frame assembly 3 through a torque transmission member 24. The solar power supply device 5 is used to supply power to the fan device 2. The solar power supply device 5 is mounted on the other end of the drive device 21 and is electrically connected to the drive device 21 through a power supply module. An active gap 4 is provided between the fan device 2 and the solar power supply device 5. The mounting frame assembly 3 is configured to sense the temperature inside the housing assembly 1. When the temperature rises, the mounting frame assembly 3 drives the drive device 21 to rise and away from the fan blade assembly 22 to reduce wind resistance. At the same time, the active gap 4 is increased to increase the airflow through the solar power supply device 5 and the drive device 21 to assist in heat dissipation. By being able to sense the temperature rise and lift the mounting frame of the fan device 2 and the solar power supply device 5, the device can increase the air intake area to reduce wind resistance while improving the heat dissipation capacity of the solar power supply device 5 and the fan device 2.

[0034] In this embodiment, a control unit (not shown) is also included. The control unit may include a microcontroller (MCU), a relay and a power management chip. The electrical connection method between the microcontroller (MCU), the relay and the power management chip is a conventional technical means for those skilled in the art, so it will not be repeated again.

[0035] In one of the embodiments of the present application, compared with before the solar power supply device 5 and the driving device 21 were lifted, the height of the movable gap 4 was increased from 5 mm to 30 mm, which greatly enhanced the air convection. According to simulation calculations, the temperature on the back of the solar panel can be reduced by about 8-10°C under high-intensity sunlight, thereby increasing the photovoltaic conversion efficiency by about 3-5%.

[0036] See also Figure 4The mounting frame assembly 3 includes: a plurality of fixing frames 31, a temperature sensing assembly 32 and a lifting block 33. The shell assembly 1 is a columnar component. The plurality of fixing frames 31 are arranged inside the shell assembly 1 at intervals along the circumference of the shell assembly 1. A plurality of circumferentially spaced gaps are formed between the fixing frames 31 and the shell assembly 1. A rectangular slide groove 311 extending in the vertical direction is opened on the side of the fixing frame 31 away from the shell assembly 1. The temperature sensing assembly 32 is assembled in the rectangular slide groove 311. One side of the lifting block 33 is slidably assembled in the rectangular slide groove 311 along the up and down directions. The temperature sensing assembly 32 is configured to sense the temperature increase inside the shell assembly 1 and drive the lifting block 33 to rise. The other side of the lifting block 33 is connected to the driving device 21. By setting the temperature sensing assembly 32 and utilizing the temperature sensing assembly 32 to sense the temperature and drive the lifting block 33 to rise, it is convenient to lift the solar power supply device 5 and the fan device 2 when the temperature inside the device is too high, thereby improving the heat dissipation capacity.

[0037] Please continue reading Figure 4 The temperature sensing component 32 includes: a bimetallic strip 321 and a moving block 322. The bottom side wall of the rectangular chute 311 is provided with a rectangular groove 3111. The bimetallic strip 321 is assembled in the rectangular groove 3111. The moving block 322 is slidably assembled on the bottom inner wall of the rectangular chute 311 along the radial direction of the shell component 1. The top of the moving block 322 is provided with a first inclined surface 3221. The bottom end of the lifting block 33 is provided with a second inclined surface 331 that matches the shape of the first inclined surface 3221. The temperature inside the shell component 1 increases. When the bimetallic strip 321 is in operation, the moving block 322 moves toward the central axis of the housing assembly 1, so that the first inclined surface 3221 and the second inclined surface 331 conflict with each other to drive the lifting block 33 to rise. By setting the bimetallic strip 321, the device can utilize the characteristics of the bimetallic strip 321 that expands and deforms when heated without additional power loss, so that the device can sense the internal working temperature more energy-efficiently and drive the lifting block 33 to rise at the same time, thereby improving the energy efficiency of the device and meeting the device's requirements for heat dissipation performance.

[0038] In this embodiment, the bimetallic strip 321 can be a high-temperature FPA series bimetallic strip that produces a predetermined deformation when the temperature reaches 65°C. The two metal materials of the bimetallic strip 321 are customized according to the actual heating conditions of the device. The above temperature is the temperature threshold that triggers the driving device 21 to lift.

[0039] See also Figure 5 and Figure 6The driving device 21 includes: a motor outer warehouse 211 and a threaded warehouse cover 212. A motor 2110 is provided inside the motor outer warehouse 211. The driving shaft of the motor 2110 extends out of one end of the motor outer warehouse 211. The other side of the plurality of lifting blocks 33 is fixedly assembled on the outer wall of the motor outer warehouse 211 along the circumferential direction. The other end of the motor outer warehouse 211 is coaxially provided with an annular thread groove 2111. The threaded warehouse cover 212 is threadedly engaged in the thread groove 2111. The threaded warehouse cover 212 is provided with an angle adjustment member 23 and is connected to the solar power supply device 5 through the angle adjustment member 23. By assembling the solar power supply device 5 on the threaded warehouse cover 212, the device can be easily disassembled and assembled by rotating the threaded warehouse cover 212, thereby improving the convenience of maintaining the solar power supply device 5 in the later stage.

[0040] See also Figure 3 The fan blade assembly 22 includes: a bracket 221 and a fan blade 222. One end of the shell assembly 1 extends into the interior of the attic roof. A plurality of ventilation holes 11 are provided on the outside of one end of the shell assembly 1. The plurality of ventilation holes 11 are arranged in a ring shape at one end of the shell assembly 1. The bracket 221 is assembled on the inner wall of one end of the shell assembly 1. A tapered roller bearing 223 coaxial with the drive shaft of the motor 2110 is assembled on the bracket 221. One side of the fan blade 222 is in contact with the tapered roller bearing 2 23 is connected to the inner circle of the fan blade 222, the fan blade 222 is located below the ventilation hole 11, and the other side of the fan blade 222 is connected to the motor 2110 through the torque transmission member 24. By setting a split fan blade 222 and setting the fan blade 222 on the bracket 221, when the fan blade 222 rotates, its own gravity acts on the tapered roller bearing 223 on the bracket 221, thereby avoiding axial traction on the drive shaft of the motor 2110, and reducing the additional power consumption of the motor 2110 due to axial traction.

[0041] In this embodiment, the bracket 221 may be composed of at least two rod-shaped components, one end of the bracket 221 is connected and fixed to the outer ring of the tapered roller bearing 223 , and the other end is connected and fixed to the inner wall of one end of the housing assembly 1 .

[0042] See also Figure 7 and Figure 8The torque transmission member 24 includes: an extension tube 241 and a cutting rod 242. The extension tube 241 is arranged on the other side of the fan blade 222. The extension tube 241 is provided with an annular strip keyway 2411 along the circumference of its inner wall. The cutting rod 242 is coaxially fixedly assembled on the drive shaft of the motor 2110. The cutting rod 242 is provided with a key strip 2421 that is adapted to the shape of the strip keyway 2411 on the outer circumference. By relatively sliding the extension tube 241 and the cutting rod 242 in the axial direction and circumferentially engaging with the key strip 2421 and the keyway, the distance between the fan blade 222 itself and the driving device 21 can be pulled apart when the motor 2110 is lifted, so as to reduce the wind resistance generated by the motor 2110 on the fan blade 222, and at the same time avoid the axial traction force generated by the fan blade 222 on the drive shaft of the motor 2110.

[0043] See also Figure 2 and Figure 3 The solar power supply device 5 includes a snap-fit ​​cover 52, a bowl-shaped chamber is provided inside the snap-fit ​​cover 52, one side of the snap-fit ​​cover 52 is connected to the angle adjustment member 23, and the other side is provided with a solar panel 53, and the solar panel 53 is electrically connected to the driving device 21. By providing the bowl-shaped snap-fit ​​cover 52, the snap-fit ​​cover 52 can buckle the outer shell component 1 when it is lowered, so that rainwater from the outside will not enter the interior of the device.

[0044] Please continue reading Figure 5 and Figure 6The angle adjustment member 23 includes: a hollow spherical frame 231, a deflection ball 233 and an assembly plate 235. A cylindrical cavity 2121 is opened inside the threaded bin cover 212. The hollow spherical frame 231 is assembled on the outside of the threaded bin cover 212 and is connected to the cylindrical cavity 2121. A fixed filling medium 2122 is provided inside the cylindrical cavity 2121. A piston column 232 is slidingly sealed inside the cylindrical cavity 2121. One end of the piston column 232 extends out of the cylindrical cavity 2121 and contacts the motor outer bin 211. The deflection ball 233 is arranged inside the hollow spherical frame 231, and the end of the deflection ball 233 away from the cylindrical cavity 2121 protrudes from the hollow spherical frame. 231, and the other end is fixedly connected with a plurality of resistance sheets 234, one end of the resistance sheet 234 extends to the inside of the columnar cavity 2121, one side of the assembly plate 235 is fixedly assembled on one end of the deflection ball 233, and the other side is connected and fixed to the snap-fit ​​cover plate 52. By setting the solid filling medium and the piston column 232, when the solar power supply device 5 is assembled on the threaded bin cover 212, the solid filling medium is squeezed and changes from a discrete state to a compressed state, thereby fixing the resistance sheet 234 and preventing the deflection of the deflection ball 233, so that the device can fix the angle of the solar power supply device 5 at the same time as assembling the solar power supply device 5, reducing the process of installing and disassembling the device and improving the efficiency of assembly and disassembly.

[0045] In this embodiment, the solid filling medium may be quartz sand.

[0046] See also Figure 9 , also includes an annular dustproof component 6, the dustproof component 6 includes: a first elastic ring 61, an annular dustproof net 62 and a second elastic ring 63, the first elastic ring 61 is coaxially assembled on the inner wall of the other end of the shell component 1, the outer ring of the annular dustproof net 62 is coaxially fixedly assembled on the inner wall of the first elastic ring 61, the inner ring of the annular dustproof net 62 is coaxially sleeved on the motor outer warehouse 211, and is connected and fixed to the motor outer warehouse 211, and an elastically stretchable dustproof component 6 is provided, so that the dustproof component 6 can play a dustproof effect whether the driving device 21 and the solar power supply device 5 are lifted or lowered.

[0047] See also Figure 10 An annular groove is coaxially opened on the inner wall of the snap-fit ​​cover 52, and an annular hydrogel 521 is arranged inside the annular groove. By arranging the annular hydrogel 521 on the inner wall of the snap-fit ​​cover 52, when external moisture passes through the gap between the snap-fit ​​cover 52 and the outer shell component 1, the annular hydrogel 521 expands when it encounters water and shrinks the gap of the snap-fit ​​cover 52, thereby preventing water from entering the device.

[0048] To sum up, when the weather is clear, the fan device 2 and the solar power supply device 5 work at the same time. At this time, the solar power supply device 5 can use the photovoltaic effect to convert solar energy into electrical energy and provide auxiliary power supply to the fan device 2. When the temperature inside the shell component 1 is too high, the bimetallic strip 321 senses that the temperature has risen to the threshold value, and it deforms itself, driving the motor 2110 and the snap cover 52 to rise, thereby increasing the active gap 4, increasing the flow rate of external airflow into the device, allowing more airflow to pass through the back of the solar power supply device 5 and the fan device 2, thereby improving the heat dissipation capacity of the fan device 2 and the solar power supply device 5, and at the same time increasing the air intake area of ​​the fan device 2, avoiding airflow congestion at the ventilation hole 11 below the shell component 1, reducing wind resistance, and at the same time when the motor 2110 is lifted, the motor 2110 is away from the fan blades 222, thereby avoiding the motor 2110 itself blocking the fan blades 222, further reducing wind resistance, thereby saving the resistance encountered by the motor 2110 during operation and reducing power consumption.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A solar attic fan, characterized in that: include: A housing component (1), the housing component (1) is mounted on the attic roof and is hollow inside; A fan device (2), the fan device (2) comprising a drive device (21) and a fan blade assembly (22); a liftable mounting frame assembly (3) is provided inside the housing assembly (1); the drive device (21) and the mounting frame assembly (3) are connected via a torque transmission member (24); a solar power supply device (5) for supplying power to the fan device (2), wherein the solar power supply device (5) is mounted on the other end of the drive device (21) and is electrically connected to the drive device (21) via a power supply module; A movable gap (4) is provided between the fan device (2) and the solar power supply device (5), and the mounting frame assembly (3) is configured to sense the temperature inside the housing assembly (1). When the temperature rises, the mounting frame assembly (3) drives the driving device (21) to rise and move away from the fan blade assembly (22) to reduce wind resistance, while increasing the movable gap (4) and increasing the flow rate of airflow passing through the solar power supply device (5) and the driving device (21) to assist in heat dissipation.

2. A solar attic fan according to claim 1, characterized in that: The mounting frame assembly (3) comprises: A plurality of fixing frames (31), the housing component (1) being a columnar member, the plurality of fixing frames (31) being arranged inside the housing component (1) at intervals along the circumference of the housing component (1), and a plurality of circumferentially spaced gaps being formed between the plurality of fixing frames (31) and the housing component (1); A temperature sensing component (32), wherein a rectangular chute (311) extending in a vertical direction is provided on a side of the fixing frame (31) facing away from the housing component (1), and the temperature sensing component (32) is assembled in the rectangular chute (311); A lifting block (33), one side of which is slidably assembled in the rectangular slide groove (311) along the up-down direction, the temperature sensing component (32) is configured to sense the temperature increase inside the housing component (1) and drive the lifting block (33) to rise, and the other side of the lifting block (33) is connected to the driving device (21).

3. A solar attic fan according to claim 2, characterized in that: The temperature sensing component (32) comprises: A bimetallic strip (321), wherein a rectangular groove (3111) is provided on the bottom side wall of the rectangular chute (311), and the bimetallic strip (321) is assembled in the rectangular groove (3111); A moving block (322) is slidably assembled on the inner wall of the bottom end of the rectangular slide groove (311) along the radial direction of the shell component (1); a first inclined surface (3221) is provided at the top end of the moving block (322); a second inclined surface (331) having a shape matching that of the first inclined surface (3221) is provided at the bottom end of the lifting block (33); when the temperature inside the shell component (1) rises, the bimetallic strip (321) is configured to drive the moving block (322) to move toward the central axis of the shell component (1), so that the first inclined surface (3221) and the second inclined surface (331) contact each other, thereby driving the lifting block (33) to rise.

4. A solar attic fan according to claim 1, characterized in that: The driving device (21) comprises: A motor outer compartment (211), wherein a motor (2110) is provided inside the motor outer compartment (211), a drive shaft of the motor (2110) extends out of one end of the motor outer compartment (211), and a plurality of lifting blocks (33) are fixedly assembled on the outer wall of the motor outer compartment (211) at intervals along the circumferential direction on the other side; A threaded bin cover (212) is provided, and an annular threaded groove (2111) is coaxially provided on the outside of the other end of the motor outer bin (211), and the threaded bin cover (212) is screwed into the threaded groove (2111). The threaded bin cover (212) is provided with an angle adjustment member (23) and is connected to the solar power supply device (5) via the angle adjustment member (23).

5. The solar attic fan according to claim 1, characterized in that: The fan blade assembly (22) comprises: A bracket (221), one end of the housing component (1) extends into the interior of the attic roof, a plurality of ventilation holes (11) arranged at intervals are opened on the outside of one end of the housing component (1), the plurality of ventilation holes (11) are arranged in a ring shape at one end of the housing component (1), and the bracket (221) is assembled on the inner wall of one end of the housing component (1); The fan blade (222) is provided with a tapered roller bearing (223) coaxial with the drive shaft of the motor (2110) on the bracket (221), one side of the fan blade (222) is connected to the inner ring of the tapered roller bearing (223), the fan blade (222) is located below the ventilation hole (11), and the other side of the fan blade (222) is connected to the motor (2110) via a torque transmission member (24).

6. The solar attic fan according to claim 5, characterized in that: The torque transmission member (24) comprises: An extension tube (241), the extension tube (241) being arranged on the other side of the fan blade (222), and the extension tube (241) being provided with an annular strip key groove (2411) along the circumference of its inner wall; The insertion rod (242) is coaxially fixedly assembled on the drive shaft of the motor (2110), and a key strip (2421) that matches the shape of the strip key groove (2411) is provided on the outer circumference of the insertion rod (242).

7. The solar attic fan according to claim 4, characterized in that: The solar power supply device (5) comprises a snap-fit ​​cover (52), a bowl-shaped chamber is provided inside the snap-fit ​​cover (52), one side of the snap-fit ​​cover (52) is connected to the angle adjustment member (23), and the other side is provided with a solar panel (53), and the solar panel (53) is electrically connected to the driving device (21).

8. The solar attic fan according to claim 7, characterized in that: The angle adjustment member (23) comprises: A hollow spherical frame (231), a cylindrical cavity (2121) is provided inside the threaded bin cover (212), the hollow spherical frame (231) is assembled on the outside of the threaded bin cover (212) and is in communication with the cylindrical cavity (2121), a fixed filling medium (2122) is provided inside the cylindrical cavity (2121), a piston column (232) is slidably sealed inside the cylindrical cavity (2121), one end of the piston column (232) extends out of the cylindrical cavity (2121) and contacts the motor outer bin (211); a deflection ball (233), the deflection ball (233) being arranged inside the hollow spherical frame (231), one end of the deflection ball (233) away from the columnar cavity (2121) protruding from the hollow spherical frame (231), and the other end being fixedly connected to a plurality of resistance sheets (234), one end of the resistance sheet (234) extending into the interior of the columnar cavity (2121); An assembly plate (235) has one side fixedly assembled on one end of the deflection ball (233) and the other side connected and fixed to the buckling cover plate (52).

9. The solar attic fan according to claim 1, characterized in that: It also includes an annular dustproof component (6), the dustproof component (6) including: a first elastic ring (61), the first elastic ring (61) being coaxially assembled on the inner wall of the other end of the housing component (1); an annular dustproof net (62), the outer ring of which is coaxially fixedly assembled on the inner wall of the first elastic ring (61); The second elastic ring (63) and the inner ring of the annular dustproof net (62) are coaxially sleeved on the motor outer compartment (211) and are connected and fixed to the motor outer compartment (211).

10. The solar attic fan according to claim 7, characterized in that: An annular groove is coaxially formed on the inner wall of the snap-fit ​​cover plate (52), and an annular hydrogel (521) is provided inside the annular groove.

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