Jet fan forward and reverse rotation detector

Abstract

The utility model discloses a kind of jet fan forward and reverse detection instrument, it is related to the technical field of detector.The utility model includes lower cover, and the upper cover of the lower cover is connected with the lower cover, and the lower cover is provided with self-powered fan, wind vane between the lower cover and the upper cover, LED bulb, and LED bulb and self-powered fan electrically cooperate;Lower cover is provided with a plurality of positioning plate, and positioning plate is located in the upper cover.The utility model uses simple and easy-to-understand physical principle and design, user does not need professional knowledge and complex operation, and can test, and the tester uses detachable metal rod and light material, and user can conveniently carry and install, suitable for different occasions and environment, and the tester uses obvious wind vane and LED bulb as indicator, and user can intuitively see the import and export wind direction and wind speed of jet fan, to judge the forward and reverse state of jet fan.

Description

Technical Field

[0001] This utility model belongs to the field of testing instruments, specifically, it relates to a jet fan forward and reverse rotation testing instrument. Background Technology

[0002] The ventilation fans inside highway tunnels can rotate in both directions, making it difficult to determine visually under normal circumstances. Experience suggests that the fan rotation direction may not match the remote or on-site control settings. In the event of an emergency within the tunnel, remote activation of the fans is necessary. If the fans malfunction as described above, the consequences could be disastrous, posing a significant safety hazard. However, the wind following the traffic flow inside the tunnel is strong. When the fan rotates in reverse, the resulting headwind and headwind counteract each other, causing the current drawn by the reverse-rotating fan to be higher, sometimes even greater than, the current drawn by the forward-rotating fan. Furthermore, the current fluctuates wildly, making it impossible to determine the fan's direction of rotation.

[0003] To address these shortcomings, a jet fan forward / reverse rotation detector is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a jet fan forward and reverse rotation detector.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A jet fan forward and reverse rotation detector includes a lower cover and an upper cover that snaps into the lower cover. A self-generating fan, an LED bulb, and a wind vane are disposed between the lower cover and the upper cover. The LED bulb is electrically connected to the self-generating fan.

[0007] The lower cover has multiple positioning plates located inside the upper cover. Multiple locking plates are placed on the upper cover. Two first magnets are magnetically engaged on the upper cover. The first magnets are located between one end of two adjacent locking plates, and the other end of the locking plates is engaged with the positioning plates.

[0008] Optionally, a T-shaped plate is provided inside the lower cover, a battery is provided on the T-shaped plate, a first wire is provided between the battery and the self-generating fan, and a second wire is provided between the battery and the LED bulb.

[0009] Optionally, the T-shaped plate has two through holes with bolts installed inside, and the lower cover has two threaded holes with one end of the bolt threaded into the threaded hole.

[0010] Optionally, both the lower and upper covers have a first slot, and the LED bulb is located in the first slot.

[0011] Optionally, a second slot is provided on both the lower and upper covers, and the self-generating fan is located in the second slot.

[0012] Optionally, a third slot is provided on both the lower and upper covers, and a fixing post is provided between the two third slots. A limit groove is provided on the fixing post, and a rotating rod is provided on the wind vane. One end of the rotating rod is rotated and engaged in the limit groove.

[0013] Optionally, the top cover has two T-shaped slots, multiple placement slots connected to the T-shaped slots, and multiple grooves connected to the T-shaped slots. The positioning plate is located in the placement slot, the card plate is located in the T-shaped slot, and a second magnet is provided in the T-shaped slot. The first magnet and the second magnet are magnetically engaged.

[0014] Optionally, the positioning plate has a slot, with one end of the plate located inside the slot.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0016] This tester uses simple and easy-to-understand physical principles and design, allowing users to conduct tests without professional knowledge or complicated operations. It uses a detachable metal rod and lightweight materials, making it easy for users to carry and install, and suitable for different occasions and environments. The tester uses a clear wind vane and LED bulbs as indicators, allowing users to intuitively see the inlet and outlet wind direction and speed of the jet fan, thereby determining the forward and reverse rotation status of the jet fan.

[0017] The device has a simple structure, is easy to disassemble, and is convenient for mobile testing. With a limited investment, a set of tools can be made to test the forward and reverse rotation of jet fans in tunnels, correct fans that are turning incorrectly, and eliminate safety hazards caused by the activation of fans in the event of an emergency in the tunnel.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a bottom view of an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the lower cover structure according to an embodiment of the present utility model;

[0023] Figure 4This is a cross-sectional structural diagram of an embodiment of the present invention.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Lower cover, 2. Upper cover, 3. First slot, 4. Second slot, 5. Third slot, 6. T-shaped plate, 7. Bolt, 8. Battery, 9. Self-generating fan, 10. First wire, 11. Second wire, 12. LED bulb, 13. Fixing post, 14. Limiting groove, 15. Rotating rod, 16. Wind vane, 17. Placement groove, 18. T-shaped groove, 19. Groove, 20. Slot, 21. Card plate, 22. First magnet, 23. Positioning plate.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Please see Figure 1-4 As shown, this embodiment provides a jet fan forward and reverse rotation detector, including a lower cover 1 and an upper cover 2 that is snapped together with the lower cover 1. A self-generating fan 9, an LED bulb 12, and a wind vane 16 are provided between the lower cover 1 and the upper cover 2. The LED bulb 12 is electrically connected to the self-generating fan 9.

[0029] The lower cover 1 is provided with multiple positioning plates 23, which are located inside the upper cover 2. Multiple clamping plates 21 are placed on the upper cover 2. Two first magnets 22 are magnetically engaged on the upper cover 2. The first magnets 22 are located between one end of two adjacent clamping plates 21, and the other end of the clamping plate 21 is engaged with the positioning plate 23.

[0030] Specifically, the testing tool is mounted on a stainless steel metal rod, aligned with the inlet and outlet of the jet fan, and its height and angle are adjusted so that it can receive the airflow generated by the jet fan. The wind vane 16 and LED bulb 12 on the testing tool are observed to determine the inlet and outlet wind direction and wind speed of the jet fan.

[0031] Determine the forward and reverse rotation state of the jet fan according to the following rules:

[0032] Slowly bring the testing tool close to any end of the jet fan. If the LED bulb 12 lights up and the arrow of the wind vane 16 points in the same direction as the self-generating fan 9, it means that the air outlet is the air outlet. Then compare the air outlet with the direction of traffic flow. If they are in the same direction, the fan is rotating in the forward direction. If they are in the opposite direction, the fan is rotating in the reverse direction.

[0033] If LED bulb 12 is not lit and the arrow of wind vane 16 does not point in a fixed direction, it means that the air outlet is an air inlet. Then compare the air outlet with the direction of traffic flow. If they are in the same direction, the fan will rotate in reverse; if they are in the opposite direction, the fan will rotate in the forward direction.

[0034] If no LED bulb 12 is lit at the inlet or outlet, or if the arrow of the wind vane 16 points in a direction inconsistent with that of the self-generating fan 9, it indicates that the jet fan is not running or is malfunctioning.

[0035] This tester uses simple and easy-to-understand physical principles and design, allowing users to conduct tests without professional knowledge or complicated operations. The tester uses a detachable metal rod and lightweight materials, making it easy for users to carry and install, and suitable for different occasions and environments. The tester uses a clear wind vane 16 and LED bulb 12 as indicators, allowing users to intuitively see the inlet and outlet wind direction and wind speed of the jet fan, thereby determining the forward and reverse rotation status of the jet fan.

[0036] The device has a simple structure, is easy to disassemble, and is convenient for mobile testing. With a limited investment, a set of tools can be made to test the forward and reverse rotation of jet fans in tunnels, correct fans that are turning incorrectly, and eliminate safety hazards caused by the activation of fans in the event of an emergency in the tunnel.

[0037] like Figure 1-4 As shown, in this embodiment, a T-shaped plate 6 is provided inside the lower cover 1, and a battery 8 is provided on the T-shaped plate 6. A first wire 10 is provided between the battery 8 and the self-generating fan 9, and a second wire 11 is provided between the battery 8 and the LED bulb 12. Two through holes are provided on the T-shaped plate 6, and bolts 7 are provided in the through holes. Two threaded holes are provided on the lower cover 1, and one end of the bolt 7 is threaded into the threaded hole. A first slot 3 is provided on both the lower cover 1 and the upper cover 2, and the LED bulb 12 is located in the first slot 3. A second slot 4 is provided on both the lower cover 1 and the upper cover 2, and the self-generating fan 9 is located in the second slot 4. The third slot 5 has a fixing post 13 between the two third slots 5. The fixing post 13 has a limiting groove 14. The wind vane 16 has a rotating rod 15. One end of the rotating rod 15 is rotatably engaged in the limiting groove 14. The upper cover 2 has two T-shaped slots 18, multiple placement slots 17 connected to the T-shaped slots 18, and multiple grooves 19 connected to the T-shaped slots 18. The positioning plate 23 is located in the placement slot 17, and the card plate 21 is located in the T-shaped slot 18. The T-shaped slot 18 has a second magnet. The first magnet 22 is magnetically engaged with the second magnet. The positioning plate 23 has a card slot 20, and one end of the card plate 21 is located in the card slot 20.

[0038] The LED bulb 12 is fixed between the lower cover 1 and the upper cover 2 via the first slot 3, forming a stable light-emitting area. The self-generating fan 9 is installed in the second slot 4, with its shaft perpendicular to the airflow direction of the fan, ensuring that the airflow drives the fan blades to rotate. The rotating rod 15 of the wind vane 16 rotates freely within the limiting groove 14 of the fixed column 13, ensuring that the wind vane always points in the airflow direction, visually indicating the fan's direction of rotation. The upper cover 2 and the lower cover 1 are quickly assembled via the clamping plate 21 and the positioning plate 23. The clamping plate 21 slides within the T-shaped groove 18 and is magnetically fixed by the first magnet 22 and the second magnet within the T-shaped groove 18, allowing the clamping plate 21 to embed into the slot 20 of the positioning plate 23, ensuring a tight fit between the upper cover 2 and the lower cover 1 and facilitating disassembly and maintenance.

[0039] The self-generating fan 9 converts wind energy into electrical energy to power the LED bulb 12 and battery 8, eliminating the need for an external power source or frequent battery replacements, thus reducing operating costs. It is suitable for outdoor or power-free scenarios, and is energy-saving and environmentally friendly. The wind vane 16 can rotate flexibly with the airflow direction through the cooperation of the rotating rod 15 and the limiting groove 14 of the fixed column 13, intuitively indicating the airflow direction of the jet fan and quickly determining the forward and reverse states. The LED bulb 12 is powered by connecting the first wire 10 and the second wire 11 through the circuit. The working status or turning result can be displayed by the light turning on or off or changing color (if multi-color light is designed), enhancing the visualization effect.

[0040] Example 1: Considering that the actual highway scenario differs from the ideal operating environment of the device, the practical application of this device may still have the following problems:

[0041] Traffic volume varies from tunnel to tunnel. Tunnels with low traffic volume can be inspected during gaps in traffic flow, while tunnels with high traffic volume need to be closed for inspection.

[0042] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A jet fan forward / reverse rotation detector, characterized in that, include: The lower cover (1) and the upper cover (2) are snapped together with the lower cover (1). A self-generating fan (9), an LED bulb (12) and a wind vane (16) are provided between the lower cover (1) and the upper cover (2). The LED bulb (12) is electrically connected to the self-generating fan (9). The lower cover (1) is provided with multiple positioning plates (23), the positioning plates (23) are located inside the upper cover (2), the upper cover (2) is provided with multiple card plates (21), the upper cover (2) has two first magnets (22) magnetically engaged, the first magnets (22) are located between one end of two adjacent card plates (21), and the other end of the card plates (21) is engaged with the positioning plates (23).

2. The jet fan forward / reverse rotation detector according to claim 1, characterized in that, A T-shaped plate (6) is provided inside the lower cover (1), a battery (8) is provided on the T-shaped plate (6), a first wire (10) is provided between the battery (8) and the self-generating fan (9), and a second wire (11) is provided between the battery (8) and the LED bulb (12).

3. The jet fan forward / reverse rotation detector according to claim 2, characterized in that, Two through holes are provided on the T-shaped plate (6), and bolts (7) are installed in the through holes. Two threaded holes are provided on the lower cover (1), and one end of the bolt (7) is threaded into the threaded hole.

4. The jet fan forward / reverse rotation detector according to claim 1, characterized in that, The lower cover (1) and the upper cover (2) are both provided with a first slot (3), and the LED bulb (12) is located in the first slot (3).

5. The jet fan forward / reverse rotation detector according to claim 1, characterized in that, The lower cover (1) and the upper cover (2) are both provided with a second slot (4), and the self-generating fan (9) is located in the second slot (4).

6. The jet fan forward / reverse rotation detector according to claim 1, characterized in that, The lower cover (1) and the upper cover (2) are each provided with a third slot (5). A fixing post (13) is provided between the two third slots (5). A limit groove (14) is provided on the fixing post (13). A rotating rod (15) is provided on the wind vane (16). One end of the rotating rod (15) is rotated and fitted in the limit groove (14).

7. The jet fan forward / reverse rotation detector according to claim 1, characterized in that, The top cover (2) has two T-shaped grooves (18), multiple placement grooves (17) connected to the T-shaped grooves (18), and multiple recesses (19) connected to the T-shaped grooves (18). The positioning plate (23) is located in the placement groove (17), and the card plate (21) is located in the T-shaped groove (18). A second magnet is provided in the T-shaped groove (18), and the first magnet (22) and the second magnet are magnetically engaged.

8. The jet fan forward / reverse rotation detector according to claim 1, characterized in that, The positioning plate (23) has a slot (20) and one end of the card plate (21) is located in the slot (20).

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