A power generation device utilizing pressure difference

Abstract

The present invention discloses a power generation device utilizing pressure difference, comprising a base, a main air duct, a wing, an upper cover plate and a generator assembly, wherein the top of the base is a middle cover plate, the main air duct and the wing both extend into the base through the middle cover plate, the power generation assembly is arranged at the lower end of the main air duct, the upper cover plate is fixed to the top of the main air duct and the wing, the inside of the wing is hollow, the lower end of the wing is connected to the main air duct, the side wall of the wing is provided with a first ventilation hole, and the side wall of the main air duct is provided with a second ventilation hole. The structure is simple, the floor space is small, and the material can be saved while reducing the floor space. At the same time, the device utilizes the pressure difference during blowing to drive the rotation of the generator, and the amount of wind required for power generation is small. The power generation mechanism can still be operated to generate electricity at low wind speeds, thereby improving the power generation efficiency and applicability of the device. The device is also equipped with a cleaning and anti-blocking component to prevent impurities from blocking the second ventilation hole on the main air duct, keep the air outlet unobstructed, and ensure the efficiency of ventilation and power generation.

Description

Technical Field

[0001] The present invention relates to the field of power generation devices, and more specifically, to a power generation device utilizing pressure difference. Background Art

[0002] Wind power generation is a renewable energy technology that converts wind energy into electrical energy. As a clean and renewable energy source, wind power generation has been vigorously developed in recent years. At present, wind turbines are mainly divided into horizontal axis and vertical axis. In the installation of small and medium-sized wind turbines, horizontal axis wind turbines are directly affected by wind speed and affect the power generation, and vertical axis wind turbines limit the manufacturing size. Compared with horizontal axis wind turbines, the manufacturing cost of vertical axis wind turbines with the same power is much higher than that of horizontal axis wind turbines. Small and medium-sized horizontal axis wind turbines are not suitable for concentrated construction and installation in residential areas. At present, domestic wind turbines are mainly concentrated in fixed wind farms far away from residential areas, and single or several large wind turbines can be seen around cities. Small and medium-sized wind turbines are mainly used in remote areas or fixed living areas without power grids.

[0003] At present, small and medium-sized wind turbines have a small wind impact surface, so they need a large wind volume and wind speed to start the wind turbine, and the power generation requirements are high. At low wind speeds, there is a problem that small wind turbines cannot achieve the expected power generation due to insufficient wind speed. Summary of the invention

[0004] In order to overcome the problem that the power generation requirements of small and medium-sized wind turbines in the prior art are high and the wind speed is not enough to achieve the expected power generation when the wind speed is low.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides a power generation device utilizing pressure difference, comprising a base, a main air duct, a wing, an upper cover plate and a generator assembly, wherein the top of the base is a middle cover plate, the main air duct and the wing both pass through the middle cover plate and extend into the base, the power generation assembly is arranged at the lower end of the main air duct, the upper cover plate is fixed to the main air duct and the top of the wing, the interior of the wing is hollow, the lower end of the wing is connected to the main air duct, one side of the base is open, the side wall of the wing is provided with a first ventilation hole, and the side wall of the main air duct is provided with a second ventilation hole.

[0007] In a preferred technical solution of the present invention, a plurality of first fixing holes and second fixing holes are formed on the middle cover plate, the main air duct extends into the base through the first fixing holes, and the wing extends into the base through the second fixing holes.

[0008] In a preferred technical solution of the present invention, the connection between the main air duct and the upper cover plate, and the connection between the wing and the upper cover plate are both provided with connecting pieces for enhancing the sealing performance.

[0009] In a preferred technical solution of the present invention, the plurality of vanes are symmetrically arranged on both sides of the air duct with the main air duct as the center, and the first ventilation hole is opened on the side of the vane close to the main air duct, and the second ventilation hole is opened on both sides of the main air duct, and the lower end of the vane is connected to the side wall of the main air duct through a connecting tube.

[0010] In a preferred technical solution of the present invention, the power generation assembly includes a generator, blades, a mounting bracket and a connecting plate. The engine is fixed on the mounting bracket, the blades are connected to the power input end of the generator, the mounting bracket is fixed on the connecting plate, and the connecting plate is fixed to the lower end of the main air duct.

[0011] In a preferred technical solution of the present invention, it also includes a cleaning and anti-blocking component, which includes a driving member and a brushing member. The brushing member includes a brush frame and bristles. The brush frame is arranged in the main air duct, and the outer wall of the brush frame is provided with bristles. The driving member is transmission-connected to the cleaning frame.

[0012] In a preferred technical solution of the present invention, the driving member includes a driving blade, a support plate, a driving shaft, a first rotating shaft and a first driving ring; the support plate is fixed in the main air duct, the driving shaft and the first rotating shaft are both rotatably connected to the support plate, the rotating gear is fixed on the first rotating shaft, a first transmission belt is sleeved between the first rotating shaft and the driving shaft, the first driving ring is rotatably connected to the support plate, a first driving tooth is arranged on the inner side of the first driving ring, and the rotating gear is meshed with the first driving tooth.

[0013] In a preferred technical solution of the present invention, the driving member also includes a driving screw, a second rotating shaft and a second driving ring. The driving screw and the second rotating shaft are both rotatably connected to the support plate. The second driving ring is fixed to the top of the first driving ring. The driving screw is located on the outer side of the second driving ring, and the second rotating shaft is located on the inner side of the second driving ring. The outer wall of the second driving ring is provided with a second driving tooth, and the inner wall of the second driving ring is provided with a third driving tooth. A first driving gear is fixed on the driving screw, and a second driving gear is fixed on the second rotating shaft. The first driving gear is meshed with the second driving tooth, and the second driving gear is meshed with the third driving tooth. The second rotating shaft is connected to the driving screw through a second transmission belt. The driving screw passes through the brush frame and cooperates with the brush frame thread.

[0014] In a preferred technical solution of the present invention, half of the outer side wall of the second drive ring is provided with the second drive teeth, half of the inner side wall of the second drive ring is provided with the third drive teeth, and the second drive teeth and the third drive teeth are staggered in the radial direction of the second drive ring.

[0015] In a preferred technical solution of the present invention, the driving member further includes an auxiliary motor, the auxiliary motor is fixed to the support plate, and the power output end of the auxiliary motor is connected to the driving shaft.

[0016] The beneficial effects of the present invention are:

[0017] The present invention provides a power generation device utilizing pressure difference, which has a simple structure and occupies a small area, and can save materials while reducing the area occupied. At the same time, the device utilizes the pressure difference when blowing to drive the rotation of the generator. The amount of wind required for power generation is relatively small, and the power generation mechanism can still operate to generate electricity at low wind speeds, thereby improving the power generation efficiency and applicability of the device. The device is also equipped with a cleaning and anti-blocking component. During the operation of the device, the cleaning and anti-blocking component is driven to brush back and forth up and down along the inside of the main air duct as the device is running, so as to prevent impurities in the air from clogging the second ventilation holes on the main air duct during daily operation, thereby maintaining smooth air outlets and ensuring the efficiency of ventilation and power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a power generation device utilizing pressure difference provided in a specific embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the main structure of a power generation device utilizing pressure difference provided in a specific embodiment of the present invention;

[0020] Figure 3 It is a rear view structural schematic diagram of a power generation device utilizing pressure difference provided by a specific embodiment of the present invention;

[0021] Figure 4 It is a side view structural schematic diagram of a power generation device utilizing pressure difference provided by a specific embodiment of the present invention;

[0022] Figure 5 yes Figure 4 A cross-sectional view of

[0023] Figure 6 It is a structural schematic diagram of a power generation component in a power generation device utilizing pressure difference provided by a specific embodiment of the present invention;

[0024] Figure 7 It is a schematic diagram of the main structure of a cleaning and anti-blocking component of a power generation device using pressure difference provided by a specific embodiment of the present invention;

[0025] Figure 8 This is a top view of the structure of a brush frame in a power generation device using pressure difference provided by a specific embodiment of the present invention;

[0026] Fig. 9This is a top view of the structure of a driving member in a power generation device utilizing pressure difference provided by a specific embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of a top view of a power generation device using a pressure difference provided by a specific embodiment of the present invention when a third driving tooth drives a second driving ring;

[0028] Fig.11 It is a schematic top view of the structure of a second driving tooth driving a second driving ring in a power generation device utilizing pressure difference provided by a specific embodiment of the invention.

[0029] In the figure:

[0030] 11-base, 12-support frame, 13-middle cover, 14-upper cover, 15-connecting piece, 2-main air duct, 21-second ventilation hole, 3-wing, 31-first ventilation hole, 32-connecting pipe, 4-power generation component, 41-connecting plate, 42-mounting bracket, 43-generator, 44-blade, 53-support plate, 54-drive shaft, 55-drive blade, 56-first drive ring, 57-first transfer shaft, 58-first transmission belt, 59-transfer gear, 50-first drive tooth, 61-second drive ring, 62-second drive tooth, 63-third drive tooth, 64-second transfer shaft, 65-drive screw, 66-second drive gear, 67-first drive gear, 68-second transmission belt, 71-brushing frame, 72-bristles, 73-auxiliary motor. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0032] like Figure 1-Figure 5 As shown, an embodiment provides a power generation device utilizing pressure difference, including a base 11, a main air duct 2, a wing 3, an upper cover plate 14 and a generator 43 assembly. The top of the base 11 is a middle cover plate 13, the main air duct 2 and the wing 3 both extend through the middle cover plate 13 into the base 11, the power generation assembly 4 is arranged at the lower end of the main air duct 2, the upper cover plate 14 is fixed to the main air duct 2 and the top of the wing 3, the interior of the wing 3 is hollow, the lower end of the wing 3 is connected to the main air duct 2, one side of the base 11 is open, the side wall of the wing 3 is provided with a first ventilation hole 31, and the side wall of the main air duct 2 is provided with a second ventilation hole 21.

[0033] When the wind blows through the device, the wind blows between the main air duct 2 and the wing 3 and between the wing 3 and the wing 3, and these areas form high-pressure areas. At this time, this part of the area generates attraction in the main air duct 2 and the wing 3 through the first ventilation hole 31 and the second ventilation hole 21. Since the wing 3 is connected to the main air duct 2, the suction generated by the wing 3 is also led to the main air duct 2, so a large suction will be generated in the main air duct 2. Under the action of the suction, the air at the bottom of the main air duct 2 is sucked into the main air duct 2, so an airflow will be generated inside the main air duct 2. The airflow drives the power generation component 4 to rotate to achieve power generation. The device does not require the power generation component to face the direction of the wind directly, nor does it require a large wind force to drive it to rotate. The main air duct 2 and multiple wing 3 can still generate a pressure difference through multiple components at the same time to drive the power generation component to operate and generate electricity when the external wind speed is not very large, reducing the wind conditions required for power generation and improving the efficiency of power generation. At the same time, such a setting makes the device smaller in size, which can not only reduce the floor space occupied by the installation and operation of the equipment, but also reduce the material cost of the power generation device, improve the operating efficiency and reduce the cost. A support frame 12 is disposed at the bottom of the base 11 .

[0034] Furthermore, a plurality of first fixing holes and second fixing holes are provided on the middle cover plate 13, the main air duct 2 extends into the base 11 through the first fixing holes, and the fins 3 extend into the base 11 through the second fixing holes. The fixing holes can fix the fins 3 to prevent the fins 3 from being deformed or displaced by wind during use, thereby ensuring that power generation can be carried out continuously and improving the stability of the device.

[0035] Furthermore, the connection between the main air duct 2 and the upper cover plate 14, and the connection between the fins 3 and the upper cover plate 14 are provided with connectors 15 for enhancing sealing. The connectors 15 can enhance the sealing between the main air duct 2 and the fins 3 and the upper cover plate 14, avoid reducing the suction force, and enable the power generation assembly 4 to be blown by the airflow to generate electricity.

[0036] Furthermore, a plurality of fins 3 are symmetrically arranged on both sides of the air duct with the main air duct 2 as the center, and a first ventilation hole 31 is provided on one side of the fin 3 close to the main air duct 2, and a second ventilation hole 21 is provided on both sides of the main air duct 2, and the lower end of the fin 3 is connected to the side wall of the main air duct 2 through a connecting pipe 32. The fin 3 is arranged to protrude toward one side of the main air duct 2. When the wind blows through the device, the main duct establishes a certain wind resistance at the front end of the high-pressure area to make the airflow in the high-pressure area more stable. The upper airflow passes through the fin 3 and the main air duct 2 to form a high-pressure area in the middle of the fin 3, which allows the lower airflow to enter the base 11 and be discharged from the second ventilation hole 21 of the main duct, thereby driving the operation of the power generation component 4. The first ventilation hole 31 is provided in the high-pressure area inside the fin 3, and the fin 3 is connected to the main air duct 2 through a connecting pipe 32, so that the main air duct 2 obtains a larger flow from the low-pressure area to the high-pressure area, so that the power generation component 4 can obtain a larger driving wind force for power generation.

[0037] Furthermore, the power generation assembly 4 includes a generator 43, blades 44, a mounting bracket 42 and a connecting plate 41. The engine is fixed on the mounting bracket 42, the blades 44 are connected to the power input end of the generator 43, the mounting bracket 42 is fixed on the connecting plate 41, and the connecting plate 41 is fixed to the lower end of the main air duct 2. Under the action of the high-pressure area and the low-pressure area, the airflow blows the blades 44, and the blades 44 rotate to drive the generator 43 to operate, thereby generating electricity.

[0038] Furthermore, if Figure 6-Figure 11 As shown, it also includes a cleaning and anti-blocking component, which includes a driving component and a brushing component. The brushing component includes a brushing frame 71 and bristles 72. The brushing frame 71 is arranged in the main air duct 2, and the outer wall of the brushing frame 71 is provided with bristles 72. The driving component is transmission-connected to the cleaning frame.

[0039] During the operation of the power generation device, the airflow is discharged through the second ventilation hole 21 on the main air duct 2. Since the second ventilation hole 21 is relatively small, the impurities carried in the air can easily block the second ventilation hole 21, thereby affecting the ventilation effect and power generation efficiency. Therefore, the cleaning and anti-blocking components are set up to clean the inside of the main air duct 2 and brush away the dust on the second ventilation hole 21. The driving member drives the cleaning frame to move up and down to achieve the cleaning effect. In addition, the movement of the brushing frame 71 does not require additional driving components. It uses the external wind force when the device is working to achieve up and down reciprocating movement, which can not only clean the inside of the main air duct 2 to keep it clean, but also save resources.

[0040] Furthermore, the driving member includes a driving blade 55, a support plate 53, a driving shaft 54, a first rotating shaft 57 and a first driving ring 56; the supporting plate 53 is fixed in the main air duct 2, the driving shaft 54 ​​and the first rotating shaft 57 are both rotatably connected to the supporting plate 53, the rotating gear 59 is fixed on the first rotating shaft 57, a first transmission belt 58 is sleeved between the first rotating shaft 57 and the driving shaft 54, the first driving ring 56 is rotatably connected to the supporting plate 53, a first driving tooth 50 is arranged on the inner side of the first driving ring 56, and the rotating gear 59 is meshed with the first driving tooth 50.

[0041] When the wind flows inside the main air duct 2, the driving blade 55 is driven to rotate. The driving blade 55 rotates with the driving shaft 54. The driving shaft 54 ​​drives the first intermediate shaft 57 to rotate through the first transmission belt 58. The intermediate gear 59 on the first intermediate shaft 57 drives the first driving ring 56 to rotate by meshing with the first driving gear 50. The rotating first driving ring 56 drives the movement of subsequent components.

[0042] Furthermore, the driving member also includes a driving screw 65, a second rotating shaft 64 and a second driving ring 61. The driving screw 65 and the second rotating shaft 64 are both rotatably connected to the support plate 53. The second driving ring 61 is fixed to the top of the first driving ring 56. The driving screw 65 is located on the outer side of the second driving ring 61, and the second rotating shaft 64 is located on the inner side of the second driving ring 61. The outer wall of the second driving ring 61 is provided with a second driving tooth 62, and the inner wall of the second driving ring 61 is provided with a third driving tooth 63. A first driving gear 67 is fixed on the driving screw 65, and a second driving gear 66 is fixed on the second rotating shaft 64. The first driving gear 67 is meshed with the second driving tooth 62, and the second driving gear 66 is meshed with the third driving tooth 63. The second rotating shaft 64 is transmission-connected to the driving screw 65 through a second transmission belt 68. The driving screw 65 passes through the brush frame 71 and is threadedly engaged with the brush frame 71.

[0043] The second drive ring 61 rotates synchronously with the rotation of the first drive ring 56. When the rotating second drive ring 61 drives the third drive gear 63 to rotate through the third drive gear 63 on the inner side thereof, the third drive gear 63 drives the second intermediate shaft 64 to rotate, and the rotating second intermediate shaft 64 drives the drive screw 65 to rotate in one direction through the second transmission belt 68, and the drive screw 65 drives the scrubbing frame 71 to rise through the threaded engagement. When the second drive gear 62 on the outer side of the second drive ring 61 drives the first drive gear 67 on the drive screw 65 to rotate, the first drive gear 67 drives the drive screw 65 to rotate in another direction, thereby driving the scrubbing frame 71 to descend. The scrubbing frame 71 is continuously moved up and down by the alternating driving of the above two parts, thereby brushing the inside of the main air duct 2 and the second ventilation hole 21, so that the inside of the main air duct 2 and the second ventilation hole 21 are kept clean, and the power generation efficiency is not affected by blockage.

[0044] Further, the second drive teeth 62 are arranged on half of the outer wall of the second drive ring 61, and the third drive teeth 63 are arranged on half of the inner wall of the second drive ring 61. The second drive teeth 62 and the third drive teeth 63 are staggered in the radial direction of the second drive ring 61. The second drive teeth 62 are arranged on half of the outer ring of the second drive ring 61, and the third drive teeth 63 are arranged on one side of the inner ring of the second drive ring 61. The two types of drive teeth are just staggered. When the second drive teeth 62 on the outer ring drive the first drive gear 67 to rotate, the third drive teeth 63 on the inner side do not contact the third drive teeth 63. When the third drive teeth 63 on the inner side contact and mesh with the third drive teeth 63, the second drive teeth 62 on the outer side do not contact and mesh with the first drive gear 67. The above two connection drive modes are alternately performed through the continuous rotation of the second drive ring 61, thereby realizing the up and down movement of the scrubbing frame 71.

[0045] Furthermore, the driving member also includes an auxiliary motor 73, which is fixed on the support plate 53, and the power output end of the auxiliary motor 73 is connected to the driving shaft 54. When the wind condition is not good but the inside of the main air duct 2 needs to be cleaned, the auxiliary motor 73 can be started to drive the driving shaft 54 ​​to rotate, and the brush frame 71 can be driven to move up and down to achieve cleaning through the above transmission method.

[0046] Other technologies of this embodiment adopt existing technologies.

[0047] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A power generation device utilizing pressure difference, characterized in that: The invention comprises a base (11), a main air duct (2), a wing (3), an upper cover (14) and a generator (43) assembly, wherein the top of the base (11) is a middle cover (13), the main air duct (2) and the wing (3) both pass through the middle cover (13) and extend into the base (11), the power generation assembly (4) is arranged at the lower end of the main air duct (2), the upper cover (14) is fixed to the top of the main air duct (2) and the wing (3), the interior of the wing (3) is hollow, the lower end of the wing (3) is connected to the main air duct (2), one side of the base (11) is open, the side wall of the wing (3) is provided with a first ventilation hole (31), and the side wall of the main air duct (2) is provided with a second ventilation hole (21); The middle cover plate (13) is provided with a plurality of first fixing holes and second fixing holes, the main air duct (2) passes through the first fixing holes and extends into the base (11), and the wing (3) passes through the second fixing holes and extends into the base (11); The connection between the main air duct (2) and the upper cover plate (14), and the connection between the wing (3) and the upper cover plate (14) are both provided with a connecting piece (15) for enhancing sealing performance; The plurality of fins (3) are symmetrically arranged on both sides of the air duct with the main air duct (2) as the center, and the first ventilation hole (31) is opened on a side of the fin (3) close to the main air duct (2), and the second ventilation hole (21) is opened on both sides of the main air duct (2), and the lower end of the fin (3) is connected to the side wall of the main air duct (2) through a connecting pipe (32).

2. The power generation device using pressure difference according to claim 1, characterized in that: The power generation assembly (4) comprises a generator (43), blades (44), a mounting bracket (42) and a connecting plate (41); the engine is fixed on the mounting bracket (42); the blades (44) are connected to the power input end of the generator (43); the mounting bracket (42) is fixed on the connecting plate (41); and the connecting plate (41) is fixed to the lower end of the main air duct (2).

3. A power generation device using pressure difference according to claim 1 or 2, characterized in that: It also includes a cleaning and anti-blocking component, which includes a driving component and a brushing component. The scrubbing member comprises a scrubbing frame (71) and bristles (72); the scrubbing frame (71) is arranged in the main air duct (2); the outer wall of the scrubbing frame (71) is provided with bristles (72); The driving member is drivingly connected to the cleaning frame.

4. The power generation device using pressure difference according to claim 3, characterized in that: The driving member comprises a driving blade (55), a support plate (53), a driving shaft (54), a first rotating shaft (57) and a first driving ring (56); The support plate (53) is fixed in the main air duct (2); the drive shaft (54) and the first rotating shaft (57) are both rotatably connected to the support plate (53); the rotating gear (59) is fixed to the first rotating shaft (57); a first transmission belt (58) is sleeved between the first rotating shaft (57) and the drive shaft (54); the first driving ring (56) is rotatably connected to the support plate (53); a first driving tooth (50) is arranged on the inner side of the first driving ring (56); and the rotating gear (59) is meshed with the first driving tooth (50).

5. The power generation device using pressure difference according to claim 4, characterized in that: The driving member further comprises a driving screw (65), a second rotating shaft (64) and a second driving ring (61); the driving screw (65) and the second rotating shaft (64) are both rotatably connected to the support plate (53); the second driving ring (61) is fixed to the top of the first driving ring (56); the driving screw (65) is located on the outside of the second driving ring (61); the second rotating shaft (64) is located on the inside of the second driving ring (61); the outer wall of the second driving ring (61) is provided with second driving teeth (62); the second driving ring (61) The inner side wall of the brush frame (61) is provided with a third driving tooth (63), a first driving gear (67) is fixed on the driving screw rod (65), a second driving gear (66) is fixed on the second rotating shaft (64), the first driving gear (67) is meshed with the second driving tooth (62), the second driving gear (66) is meshed with the third driving tooth (63), the second rotating shaft (64) is connected to the driving screw rod (65) by a second transmission belt (68), and the driving screw rod (65) passes through the brush frame (71) and is threadedly engaged with the brush frame (71).

6. The power generation device using pressure difference according to claim 5, characterized in that: The second drive teeth (62) are arranged on half of the outer side wall of the second drive ring (61), and the third drive teeth (63) are arranged on half of the inner side wall of the second drive ring (61); the second drive teeth (62) and the third drive teeth (63) are staggered in the radial direction of the second drive ring (61).

7. The power generation device using pressure difference according to claim 6, characterized in that: The driving member further comprises an auxiliary motor (73), the auxiliary motor (73) being fixed on the support plate (53), and the power output end of the auxiliary motor (73) being connected to the driving shaft (54).

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