Multi-dimensional control discrete type novel exhaust fan blade

Abstract

A multi-dimensional control discrete type novel exhaust fan blade structurally comprises a shaft seat, a plurality of main blades and a plurality of auxiliary blades, the main blades and the auxiliary blades are arranged on the shaft seat, the main blades and the auxiliary blades are vertically arranged at intervals and are kept consistent along the central axis of the shaft seat, and the main blades are evenly arranged on the outer surface of the shaft seat in the circumferential direction. The blade profile of the main blade is in an irregular arc shape in the direction from the front edge of the blade to the rear edge of the blade, the omni-directional wind power coverage area is increased, the blade inclination angle between the auxiliary blade and the main blade ranges from 90 degrees to 150 degrees, and the wind power coverage area of the top of the main blade in the horizontal direction is increased. A traditional termite trapping and killing device needs manual pesticide spreading and has the defects that pesticide spreading is not uniform and not timely and the like. According to the device, powder uniformly covers the whole box body through a discrete exhaust technology, the powder is uniformly attached to termites, the amount of the powder carried back to the nests is increased, the effect of disappearing termite nests is achieved after queen termites are killed, manual intervention is not needed, labor consumption is greatly reduced, and the termite killing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent ventilation technology, specifically relating to a novel multi-dimensional control discrete type exhaust fan blade. Background Technology

[0002] In the field of pest control, there is a wide variety of tools and methods for trapping and killing pests. Common trapping tools include insecticidal lamps and traps, while attractants include sex pheromone attractants, food bait attractants, and color attractants. However, these methods have many inconveniences in practical use and are difficult to meet the needs of large-scale pest control.

[0003] Taking termite trapping as an example, while traditional termite traps can effectively attract termites, they have some problems in practical use. For instance, they require manual application of pesticide powder based on experience, which is time-consuming and labor-intensive, and cannot achieve timely extermination. Furthermore, uneven powder distribution can also hinder effective extermination. Therefore, the market needs a termite trapping device that can achieve intelligent and automated pesticide application. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a novel multi-dimensional control discrete exhaust fan blade, which solves the problems of existing termite-trapping devices requiring manual application of pesticide powder based on experience, which is time-consuming and labor-intensive, unable to achieve timely extermination, and having unevenly distributed pesticide powder that fails to achieve effective extermination.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel multi-dimensional control discrete exhaust fan blade, the structure of which includes a shaft seat and a plurality of main blades and auxiliary blades disposed on the shaft seat. The main blades and auxiliary blades are arranged vertically at intervals and are aligned along the central axis of the shaft seat. The main blades are evenly arranged on the outer surface of the shaft seat in the circumferential direction. The blade profile of the main blades is irregularly arc-shaped from the leading edge to the trailing edge, thereby improving the omnidirectional wind coverage. The blade inclination angle between the auxiliary blades and the main blades is between 90° and 150°, thereby increasing the horizontal wind coverage at the top of the main blades.

[0006] Furthermore, when the main blade rotates, the windward side facing the relatively high pressure and the leeward side facing the relatively low pressure have a blade back and a blade belly, respectively. The cross-sectional profile of the blade back is a combination curve that transitions from a first arc-shaped curve that is concave on the windward side to a second arc-shaped curve that is convex on the windward side. The cross-sectional profile of the blade belly is an arc-shaped curve that is concave on the leeward side.

[0007] Furthermore, the absolute value of the slope of the first arc curve of the blade back section profile is greater than that of the second arc curve.

[0008] Furthermore, the leading edge of the blade is provided with several windward grooves at even intervals.

[0009] Furthermore, the windward slot is either V-shaped or U-shaped.

[0010] Furthermore, the trailing edge of the blade gradually increases in size from the blade tip to the blade root, and an arc-shaped groove is provided at the junction of the trailing edge of the blade and the blade root of the bearing seat.

[0011] Furthermore, the auxiliary blade is vertically disposed on the outer surface of the bearing relative to the radial horizontal plane of the bearing, and the auxiliary blade is inclinedly disposed on the outer surface of the bearing relative to the radial center line of the bearing.

[0012] Furthermore, it also includes a control unit for intelligently controlling the operating parameters of the fan blade body and sensors for collecting environmental information.

[0013] Furthermore, the top of the bearing seat is provided with several symmetrically arranged reinforcing ribs, which intersect on the vertical central axis of the bearing seat, and a mounting hole for installation is provided at the intersection.

[0014] Furthermore, the secondary blade is movably disposed on the top of the main blade relative to the bearing seat, wherein a rotating rod is provided at the root of the secondary blade, and the secondary blade is rotatably connected to the bearing seat through the rotating rod.

[0015] The advantages of this invention are as follows: Traditional termite baiting devices require manual application of pesticides, which is time-consuming and prone to uneven or untimely application. This device, through discrete ventilation technology, ensures that the pesticide powder evenly covers the entire box, ensuring that the powder adheres evenly to the termites, increasing the amount of powder carried back to the nest, killing the queen and king, and ultimately destroying the nest. This eliminates the need for manual intervention, significantly reducing labor costs and improving termite control efficiency. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a novel multi-dimensional control discrete exhaust fan blade according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the main blade according to an embodiment of the present invention;

[0019] Figure 3 Partial structure of the main blade according to an embodiment of the present invention Figure 1 ;

[0020] Figure 4 Partial structure of the main blade according to an embodiment of the present invention Figure 2 ;

[0021] Figure 5 This is a front view of the auxiliary blade according to an embodiment of the present utility model;

[0022] Figure 6 This is a partial structural diagram of the main blade according to another embodiment of the present invention;

[0023] Figure 7 This is a partial structural diagram of the auxiliary blade according to another embodiment of the present invention.

[0024] Explanation of main reference numerals: 1. Shaft seat; 11. Reinforcing rib; 12. Mounting hole; 2. Main blade; 2a. Leading edge of blade; 2b. Trailing edge of blade; 21. Back of blade; 22. Belly of blade; 23. Windward slot; 24. Arc-shaped slot; 3. Secondary blade; 31. Rotating rod. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Example 1

[0027] Figure 1 This is a schematic diagram of the structure of a novel multi-dimensional control discrete exhaust fan blade according to an embodiment of the present invention, as shown below. Figure 1 As shown, the structure of a novel multi-dimensional control discrete exhaust fan blade according to an embodiment of the present invention will be described in detail.

[0028] This invention describes a novel multi-dimensional control discrete exhaust fan blade, comprising a shaft seat 1 and a plurality of main blades 2 and auxiliary blades 3 disposed on the shaft seat 1. The main blades 2 and auxiliary blades 3 are spaced vertically and are aligned along the central axis of the shaft seat 1, i.e., the main blades 2 and auxiliary blades 3 are axially aligned with the shaft seat 1. The main blades 2 are evenly arranged circumferentially on the outer surface of the shaft seat 1. The blade profile of the main blades 2 is irregularly arc-shaped along the direction from the leading edge 2a to the trailing edge 2b, thereby improving the omnidirectional wind coverage. The blade inclination angle between the auxiliary blades 3 and the main blades 2 is between 90° and 150°, thereby increasing the horizontal wind coverage at the top of the main blades 2.

[0029] This application applies the structure to a termite trapping device, which includes, but is not limited to, a conventional termite trapping box and a powder box inside the trapping box. The structure of this application serves as the core structure that drives the powder in the powder box to be sprayed evenly within the trapping box. The arrangement of the main blade 2 and the secondary blade 3 increases the omnidirectional wind coverage, increases airflow, generates a larger air volume, improves the powder spraying efficiency, further increases the coverage area when spraying the powder, and optimizes the spraying efficiency and uniformity of the powder.

[0030] Figure 2 A cross-sectional view of the main blade according to an embodiment of the present invention is shown below. Figure 2 The cross-section of the main blade according to an embodiment of the present invention will be described in detail.

[0031] To optimize airflow guidance, the main blade 2 has a blade back 21 and a blade belly 22 on its windward side facing relatively high pressure and its leeward side facing relatively low pressure, respectively, when rotating. The cross-sectional profile of the blade back 21 is a first arc-shaped curve 21a that transitions inward from the windward side (in this embodiment, the windward side of the main blade 2 is the side facing the leading edge of the blade or the side facing the blade back when rotating, and the leeward side is the side facing the trailing edge of the blade or the side facing the blade belly; that is, when the main blade rotates, either side facing relatively high pressure is the windward side, and the opposite side is the leeward side) towards the side closer to the windward side. Furthermore, the combined curve of the outwardly convex second arc curve 21b ensures that when the main blade 2 rotates, the airflow first contacts the second arc curve 21b, making the airflow smoother as it passes through the blade. When the airflow is driven by the blade, as it flows on the back side of the blade, the arc curve guides the airflow to better adhere to the blade surface, reducing airflow separation and vortex generation, thereby improving airflow delivery efficiency. The cross-sectional profile of the blade belly 22 is an inwardly concave arc curve facing away from the leeward side. The concave shape causes the airflow velocity to increase and the pressure to decrease when flowing through the blade belly 22; while the airflow velocity on the back side 21 is relatively slow and the pressure is higher. This pressure difference generates a thrust, pushing the airflow forward, thereby enhancing the fan's air output capacity, making the airflow more uniform, and the wind coverage wider.

[0032] Furthermore, in order to increase wind pressure, the absolute value of the slope of the first arc curve 21a of the blade back 21 cross-section is greater than that of the second arc curve 21b (the larger the absolute value of the slope, the steeper the curve, i.e., the more arc-shaped the curve). When the main blade 2 rotates clockwise and the airflow first contacts the relatively flat curve, i.e. the second arc curve 21b, the second arc curve 21b can first play a preliminary guiding and accelerating role on the air. The air begins to change its flow direction in the flat curve part and gains a certain speed. When it contacts the relatively arc curve, i.e. the first arc curve 21a, the airflow can be further guided by the concave arc curve part. At the same time, the air forms a flow state on the surface of the main blade 2 that is more conducive to generating a pressure difference. This reasonable distribution of pressure difference helps to improve the airflow of the fan, increase the airflow distribution and wind coverage, and increase the air volume and wind pressure, thereby enabling the main blade 2 to generate a larger air volume at the same rotation speed.

[0033] This application applies the structure of the main blade 2 to a termite trap, which increases airflow, generates a larger air volume, improves the efficiency of powder spraying, further increases the coverage area when spraying powder, and optimizes the spraying efficiency of powder.

[0034] Figure 3 Partial structure of the main blade according to an embodiment of the present invention Figure 1 ,like Figure 3 The following is a detailed description of the partial structure of the main blade according to an embodiment of the present invention.

[0035] To optimize airflow distribution, several windward slots 23 are evenly spaced on the leading edge 2a of the blade. These slots are arranged in a transverse array on the leading edge 2a to reduce turbulence and eddies formed by airflow passing through the leading edge, thereby reducing unstable airflow and air resistance, and lowering the efficiency of the main blade 2. The windward slots 23 divide the originally concentrated and intense airflow into multiple smaller airflow branches, thereby weakening the intensity of turbulence and eddies. Furthermore, the windward slots 23 are V-shaped, which optimizes the airflow path and allows air to enter the main flow channel of the main blade 2 more smoothly, thereby improving the fan's air compression or acceleration efficiency.

[0036] This application applies the structure of the main blade 2 to a termite trapping device, optimizing the airflow distribution when the main blade 2 is working. When it rotates at high speed, the airflow path is optimized, allowing air to enter the main channel of the main blade 2 more smoothly, thereby improving the fan's air compression or acceleration efficiency and further improving the powder distribution and spraying efficiency of the termite trapping device.

[0037] Figure 4 Partial structure of the main blade according to an embodiment of the present invention Figure 2 ,like Figure 4The following is a detailed description of the partial structure of the main blade according to an embodiment of the present invention.

[0038] To improve airflow distribution, the trailing edge 2b of the blade gradually increases in size from the blade tip to the blade root, optimizing airflow guidance and arrangement, improving wind coverage, and reducing airflow leakage and eddy generation during rotation. Near the blade root, the widened trailing edge provides a larger outlet area for the airflow, allowing for more uniform airflow discharge. Furthermore, an arc-shaped slot 24 is provided at the junction of the trailing edge 2b of the blade and the blade root of the bearing 1. When the airflow impacts, it diffuses on the surface of the main blade 2. The slot at the blade root avoids excessive airflow concentration, reduces severe local airflow turbulence and eddy generation, and improves the uniformity of airflow.

[0039] This application applies the structure of the main blade 2 to a termite trap, which improves the airflow distribution when the main blade 2 is working, so that when it rotates at high speed, the powder can be evenly covered inside the termite trap, thus improving the distribution of the powder inside the device.

[0040] Figure 5 This is a front view of the auxiliary blade according to an embodiment of the present invention, as shown below. Figure 5 The following is a detailed description of the partial structure of the auxiliary blades according to an embodiment of the present invention.

[0041] To improve airflow distribution, the auxiliary blades 3 are vertically arranged on the outer surface of the bearing seat 1 relative to the radial horizontal plane of the bearing seat 1, and inclined on the outer surface of the bearing seat 1 relative to the radial center line of the bearing seat 1. The bottom of the bearing seat 1 is an arc-shaped hemisphere. The arrangement of the auxiliary blades 3 can further improve the uniform distribution of airflow in all directions, making the airflow more evenly distributed throughout the working area of ​​the blade. This application uses it in the powder spraying of termite-killing devices. When the main blade 2 is working, it mainly covers the area below the wind direction of its working interface, and its top is a blind spot. However, by setting the auxiliary blades, the wind coverage area in the horizontal direction at the top of the main blade 2 is increased, thus improving airflow distribution.

[0042] This application utilizes the structure of the secondary blade 3 in a termite trapping device and uses it as a working process to spray pesticide powder in conjunction with the main blade 2. This further improves the spraying efficiency and overcomes the weakness of the main blade 2, which can only cover the radial airflow space formed by the wind direction when spraying pesticide powder normally. This allows the main blade 2 to evenly cover the top and all sides with pesticide powder, improving the distribution of pesticide powder in the device and enhancing the termite extermination effect.

[0043] To enhance safety, the system also includes a control unit for intelligently controlling the operating parameters of the fan blades, sensors for collecting environmental information, and a communication module for wireless communication. The sensor network includes wind speed sensors, temperature and humidity sensors, and air pressure sensors, arranged in a square or circular array. The sensors are electrically connected to the control unit to collect data in real time, while the communication module is wirelessly connected to the control unit to monitor the operating status in real time.

[0044] This application applies the aforementioned structure to a termite-killing device. The control unit employs a fuzzy PID controller, connected via wires to various sensors and actuators, such as the metering powder box and fan, enabling intelligent control of the device. The control unit can automatically adjust the operating status of each component based on preset parameters and sensor data. The communication module connects to the user terminal via a wireless network, supporting remote control and status monitoring. Users can view the device's operating status in real time via a mobile app or computer software, such as powder quantity and fan speed. If any abnormality is detected, such as motor overheating, transmission mechanism jamming, or sensor malfunction, the system will immediately issue an alarm and stop the operation of the corresponding component to prevent the fault from escalating and ensure the safe operation of the device.

[0045] Figure 1 This is a schematic diagram of the structure of a novel multi-dimensional control discrete exhaust fan blade according to an embodiment of the present invention, as shown below. Figure 1 As shown, the structure of the reinforcing rib according to an embodiment of the present invention will be described in detail.

[0046] To improve strength, the top of the bearing seat 1 is provided with several symmetrically arranged reinforcing ribs 11 to improve overall strength. They intersect on the vertical central axis of the bearing seat 1, and a mounting hole 12 is provided at the intersection for easy installation. In the high-speed rotation state during operation, the reinforcing ribs 11 provide structural protection, enhance overall rigidity, and extend service life.

[0047] This application applies the structure of the blade 3 to a termite trapping device, which improves its service life during operation and enhances its ability to continuously protect against and kill termites.

[0048] Example 2

[0049] For the sake of brevity, the parts that are the same as in Embodiment 1 will not be described again. The main focus here is on the structure that is different from Embodiment 1 of this utility model. The only difference between Embodiment 2 and Embodiment 1 is the windward groove.

[0050] Figure 6 This is a partial structural diagram of the main blade according to another embodiment of the present invention, as shown below. Figure 6 The following is a detailed description of a portion of the main blade according to another embodiment of the present invention.

[0051] To optimize airflow efficiency, the windward slot 23 is U-shaped, which optimizes the airflow path and allows the main blades 2 to exert a more balanced effect on the air during rotation, resulting in a more uniform airflow distribution. Each main blade 2 performs work on the air more evenly per unit time, improving overall performance, including stable output of airflow and air pressure.

[0052] This application applies the structure of the main blade 2 to a termite trapping device, optimizing the airflow distribution when the main blade 2 is working. When it rotates at high speed, the airflow path is optimized, allowing air to enter the main channel of the main blade 2 more smoothly, thereby improving the fan's air compression or acceleration efficiency and further improving the powder distribution and spraying efficiency of the termite trapping device.

[0053] Example 3

[0054] For the sake of brevity, the parts that are the same as those in other embodiments will not be described again. The main focus is on describing the structure of Embodiment 3 that is different from other embodiments of this utility model. The only difference between Embodiment 3 and other embodiments is the difference in the secondary blades.

[0055] Figure 7 This is a partial structural diagram of the auxiliary blade according to another embodiment of the present invention, as shown below. Figure 7 The following is a detailed description of the partial structure of the auxiliary blades according to another embodiment of the present invention.

[0056] To increase airflow velocity, the secondary blade 3 is movably mounted on top of the main blade 2 relative to the bearing 1. A rotating rod 31 is provided at the root of the secondary blade 3. The secondary blade 3 is rotatably connected to the bearing 1 through the rotating rod 31. By setting the rotating rod 31, when the main blade 2 works around the bearing 1, the secondary blade 3 can also rotate circumferentially relative to the rotating rod 31, further increasing the airflow velocity, increasing the wind coverage area at the top of the main blade 2, and improving its air volume and wind pressure output.

[0057] This application utilizes the structure of the blade 3 in a termite trap, which improves the speed and efficiency of spraying pesticide powder when trapping termites. When termites need to be trapped, the pesticide powder is quickly and evenly sprayed into the device, further improving the termite extermination effect.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel multi-dimensional control discrete type of exhaust fan blade comprising a blade body, characterized in that, Its structure includes a bearing seat (1) and several main blades (2) and auxiliary blades (3) disposed on the bearing seat (1). The main blades (2) and auxiliary blades (3) are arranged at intervals and are aligned along the central axis of the bearing seat (1). The main blades (2) are evenly arranged on the outer surface of the bearing seat (1) in the circumferential direction. The blade profile of the main blades (2) is irregularly arc-shaped from the leading edge (2a) to the trailing edge (2b) of the blade, which improves the omnidirectional wind coverage. The blade angle between the auxiliary blades (3) and the main blades (2) is between 90° and 150°, which increases the horizontal wind coverage of the top of the main blades (2).

2. The novel multi-dimensional control discrete exhaust fan blade according to claim 1, characterized in that: When the main blade (2) rotates, the windward side facing the relatively high pressure side and the leeward side facing the relatively low pressure side have a blade back (21) and a blade belly (22), respectively. The cross-sectional profile of the blade back (21) is a combination curve of a first arc curve (21a) that is concave inward on the windward side and a second arc curve (21b) that is convex inward on the windward side. The cross-sectional profile of the blade belly (22) is an arc curve that is concave inward on the leeward side.

3. The novel multi-dimensional control discrete exhaust fan blade according to claim 2, characterized in that: The absolute value of the slope of the first arc curve (21a) of the blade back (21) section profile is greater than that of the second arc curve (21b).

4. A novel multi-dimensional control discrete exhaust fan blade according to claim 2, characterized in that: The blade leading edge (2a) is provided with a number of windward grooves (23) at even intervals.

5. A novel multi-dimensional control discrete exhaust fan blade according to claim 4, characterized in that: The windward slot (23) is either V-shaped or U-shaped.

6. A novel multi-dimensional control discrete exhaust fan blade according to claim 2, characterized in that: The trailing edge (2b) of the blade gradually increases in size from the tip to the root, and an arc-shaped groove (24) is provided at the junction of the trailing edge (2b) of the blade and the root of the bearing seat (1).

7. A novel multi-dimensional control discrete exhaust fan blade according to claim 1, characterized in that: The auxiliary blade (3) is vertically disposed on the outer surface of the bearing seat (1) relative to the radial horizontal plane of the bearing seat (1), and the auxiliary blade (3) is disposed obliquely on the outer surface of the bearing seat (1) relative to the radial center line of the bearing seat (1).

8. A novel multi-dimensional control discrete exhaust fan blade according to claim 1, characterized in that: It also includes a control unit for intelligently controlling the operating parameters of the fan blade body and sensors for collecting environmental information.

9. A novel multi-dimensional control discrete exhaust fan blade according to claim 1, characterized in that: The top of the bearing seat (1) is provided with several symmetrically arranged reinforcing ribs (11), which intersect on the vertical central axis of the bearing seat (1), and a mounting hole (12) for installation is provided at the intersection.

10. A novel multi-dimensional control discrete exhaust fan blade according to claim 1, characterized in that: The secondary blade (3) is movably disposed on the top of the main blade (2) relative to the bearing seat (1), wherein a rotating rod (31) is provided at the root of the secondary blade (3), and the secondary blade (3) is rotatably connected to the bearing seat (1) through the rotating rod (31).

Images