Centrifugal fan air adjusting device capable of conveniently adjusting air speed
By designing a combination of various mechanisms, the problem of lack of flow diversion and limiting in the centrifugal fan air conditioning device was solved, realizing stable adjustment and control of wind speed and improving the stability and accuracy of wind speed.
Patent Information
- Application Number
- CN202511307503.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-14
- Publication Date
- 2025-11-18
AI Technical Summary
Existing centrifugal fan air conditioning devices lack a flow diversion mechanism, and the damper angle control lacks a limit design, which can cause vibration or airflow impact to cause the guide plate angle or air duct state to deviate unexpectedly, affecting the stability of the wind speed.
An air conditioning device is designed, comprising a wind-blocking mechanism, a transmission mechanism, an elastic locking mechanism, an air-guiding mechanism, a driven adjustment mechanism, a limiting mechanism, and a magnetic locking mechanism. Through the meshing transmission of gears and chains, combined with magnetic locking and elastic blocking, the device achieves the diversion and regulation of wind speed.
Stable wind speed regulation was achieved. By diverting and adjusting the angle, the wind speed in the air supply duct was reduced or increased, thereby improving the stability and control accuracy of the wind speed.
Smart Images
Figure CN120969255A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of centrifugal fan equipment, in particular to a centrifugal fan air adjusting device convenient for adjusting air speed. BACKGROUND
[0002] The centrifugal fan is a kind of machinery that improves the pressure of gas and sends the gas by inputting mechanical energy, it is a driven fluid machinery, and is widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household appliances, grain drying and selection, wind tunnel air source and air cushion ship inflation and propulsion, etc., the centrifugal fan is based on the principle of kinetic energy conversion into potential energy, uses high-speed rotating impeller to accelerate the gas, then decelerates, changes the flow direction, so that the kinetic energy is converted into potential energy, in a single-stage centrifugal fan, the gas enters the impeller from the axial direction, the gas changes into radial direction when flowing through the impeller, then enters the diffuser, in the diffuser, the gas changes the flow direction and the pipe cross-sectional area increases, so that the gas flow decelerates, this deceleration converts kinetic energy into pressure energy, the pressure increase mainly occurs in the impeller, and then occurs in the expansion process.
[0003] However, the existing centrifugal fan air adjusting device has the following defects when in operation: the existing centrifugal fan can only adjust the air supply amount of the centrifugal fan by a single air door when adjusting the speed, lacks a mechanism capable of splitting the air flow, and the air door angle control mechanism lacks a limiting design, vibration or air flow impact easily causes the air deflector to bear increased pressure, so that the air deflector angle or the air duct state is accidentally deviated, affecting the stability of the air speed. SUMMARY
[0004] The present application aims to provide a centrifugal fan air adjusting device convenient for adjusting air speed, mainly for solving the technical problems that the existing technology lacks a mechanism capable of splitting the air flow, and the air door angle control mechanism lacks a limiting design, vibration or air flow impact easily causes the air deflector to bear increased pressure, so that the air deflector angle or the air duct state is accidentally deviated, affecting the stability of the air speed.
[0005] To solve the above technical problems, the present application provides the following technical scheme: A centrifugal fan air adjusting device convenient for adjusting air speed, comprising a centrifugal machine body, a top of the centrifugal machine body is fixedly connected with an air supply pipeline, further comprising a wind blocking mechanism, a transmission mechanism, an elastic clamping mechanism, an air deflector mechanism, a driven adjusting mechanism, a limiting mechanism, a magnetic clamping mechanism and an elastic blocking mechanism. The wind-blocking mechanism includes several wind guide plates, which are rotatably mounted on the inner wall of the air supply duct. One end of each of the several wind guide plates located at the top of one side of the air supply duct is fixedly connected to a first connecting gear, and a first chain meshes with the outer side of each of the several first connecting gears. One end of each of the several wind guide plates located at the bottom of one side of the air supply duct is fixedly connected to a second connecting gear, and a second chain meshes with the outer side of each of the several second connecting gears. The several first connecting gears and the several second connecting gears are staggered. A connecting rod is fixedly connected between the bottommost first connecting gear and the topmost second connecting gear. The transmission mechanism includes an extension rod, which is located at one end of the connecting rod. A sliding groove is provided on one side of the outer wall of the extension rod, and a drive gear is slidably connected to the outer wall of the extension rod near the sliding groove. The elastic blocking mechanism includes a slide groove, which is opened on the inner wall of the sliding groove. A stop block is slidably arranged inside the slide groove, and a telescopic spring is arranged between the inner wall of the slide groove and the stop block. One side of the stop block contacts the side of the drive gear. The elastic snap-fit mechanism includes a support spring, which is disposed on the outer wall of the extension rod. A sliding ring is fixedly connected to one end of the support spring. The inner wall of the sliding ring is slidably connected to the extension rod. Several snap-fit blocks are fixedly connected to one side of the sliding ring. The several snap-fit blocks are arranged in a ring array at equal intervals. The air guiding mechanism includes an air guide tube, which is fixedly connected to one side of the air supply duct. A connection hole is opened at one end of the air guide tube, and several fixing plates are fixedly connected to the inner wall of the connection hole. The several fixing plates are arranged in a ring array at equal intervals. The limiting mechanism includes an adjusting gear, which is located on the outside of the extension rod and is engaged with several locking blocks; The driven adjustment mechanism includes a rotating ring, which is rotatably connected to one end of the air guide tube. A baffle plate is fixedly connected to one side of each of the several fixed plates on the inner wall of the rotating ring. A driven gear is fixedly connected to the outer wall of the rotating ring. The driving gear and the driven gear are meshed. The magnetic snap-fit mechanism includes a guide rod, the bottom end of which is fixedly connected to one side of the top of the air duct, a magnetic block fixedly connected to the top of the guide rod, a rack slidably arranged on the outside of the guide rod, and an iron plate for limiting the rack on the outer wall of the guide rod. The iron plate and the magnetic block are magnetically attracted to each other, and the rack and the driven gear are meshed.
[0006] Working principle and beneficial effects of the present invention: 1. Working principle: In the initial state, the driving gear and the driven gear are meshed. The driving gear is located on the left side of the sliding groove. Under the support of the telescopic spring, the left side of the stop block contacts the right side of the driving gear, thereby restricting the position of the driving gear. The baffle plate on the inner wall of the rotating ring and the fixed plate inside the connecting hole are in the same state. Through the magnetic attraction of the iron sheet and the magnetic block, the rack and the driven gear are separated, releasing the restriction on the driven gear. Due to the action of the support spring, several locking blocks are driven to mesh with the adjusting gear, thereby restricting the rotation angle of the driving gear and connecting the air guide tube and the air outlet tube. At this time, several air guide plates are set at an angle. When air is delivered inside the air supply duct, due to the obstruction of several air guide plates, it is easy to guide some air into the air guide tube, diverting the air and causing the air to blow out from the right side of the air guide tube, thereby reducing the air speed in the air supply duct. Press the stop block into the slide groove so that the stop block is housed inside the slide groove, releasing the restriction on the drive gear. Move the drive gear from the left side to the right side of the slide groove. Then, with the help of the telescopic spring, it is easy to drive the stop block to restrict the drive gear to the right side of the slide groove. At this time, the drive gear and the driven gear are separated. Pull the driven gear so that the driven gear drives the rotating ring to rotate. When the driven gear rotates forty-five degrees, the fixed plate and the baffle plate are misaligned. Then, the iron plate is separated from the magnetic block, so that the slider drives the rack to engage with the driven gear, thereby restricting the position of the rotating ring. At this time, the inside of the air guide tube is blocked by the baffle plate. Since the air guide tube no longer diverts the air, the air velocity of the air supply duct can be increased. When the sliding ring causes the locking block to separate from the adjusting gear, the restriction of the drive gear is released. By rotating the drive gear, the second connecting gear located at the top can be rotated. The second connecting gear then drives the first connecting gear to rotate through the connecting rod. In conjunction with the first and second chains, the angles of several air guide plates can be adjusted simultaneously, thereby adjusting the air volume of the air supply duct.
[0007] 2. Beneficial effects: (1) By the force of the supporting spring, the stop block restricts the driving gear to the left side of the sliding groove. At this time, the driving gear and the driven gear mesh. At the same time, the slider drives the iron plate and the magnetic block to magnetically attract each other, thereby driving the rack and the driven gear to separate, releasing the restriction on the driven gear. Due to the force of the supporting spring, the sliding ring drives the snap block to mesh with the adjusting gear, thereby restricting the position of the driving gear. By the force of the telescopic spring, it is convenient to drive the stop block to restrict the driving gear to the left side of the sliding groove. At this time, several fixed plates and several blocking plates overlap, so that the air guide tube and the air outlet tube are connected. At this time, several air guide plates are set at an angle. When air is delivered inside the air supply duct, due to the obstruction of several air guide plates, it is convenient to guide part of the air into the air guide tube, divert the air, and let the air flow out from inside the air outlet tube, thereby reducing the air speed of the air supply duct.
[0008] (2) By pressing the stop block, the stop block is stored inside the slide groove, releasing the restriction on the driving gear. The driving gear is moved from the left side of the slide groove to the right side. Then, with the help of the telescopic spring, the stop block is easily driven to restrict the driving gear to the right side of the slide groove. At this time, the driving gear and the driven gear are separated. At this time, the driven gear is pulled, so that the driven gear drives the rotating ring to rotate. When the driven gear rotates forty-five degrees, the fixed plate and the baffle plate are misaligned, and the slider is pulled, so that the slider drives the iron piece to separate from the magnetic block, so that the slider drives the rack to engage with the driven gear, thereby restricting the position of the rotating ring. At this time, the air duct is not connected to the air outlet pipe. Since the air duct no longer diverts the air, the air velocity of the air supply pipe can be increased.
[0009] (3) By pulling the sliding ring to the right of the extension rod, the sliding ring causes the locking block to separate from the adjusting gear, thereby releasing the restriction of the active gear. By rotating the active gear, the second connecting gear located at the top can be rotated. Thus, the second connecting gear drives the first connecting gear to rotate through the connecting rod. In conjunction with the first chain and the second chain, the angle of several air guide plates can be adjusted simultaneously, thereby adjusting the air volume of the air supply duct.
[0010] Preferably, the windbreak mechanism further includes a concave mounting base, an upper baffle, and a lower baffle. Two concave mounting bases are provided, each fixedly connected to one side of the inner wall of the air supply duct. One concave mounting base is internally connected to the outer side of the air supply duct. Several air guide plates are rotatably connected at both ends to one side of the two concave mounting bases, with one end of each air guide plate penetrating the outer side of one concave mounting base. The first connecting gear and the second connecting gear are both located inside one concave mounting base. The top of the two concave mounting bases, near the top of the uppermost air guide plate, is fixedly connected to the same upper baffle. The bottom of the two concave mounting bases, near the bottom of the lowermost air guide plate, is fixedly connected to the same lower baffle. The support rod drives the uppermost second connecting gear to rotate, thereby the second connecting gear drives the first connecting gear to rotate via the connecting rod. In conjunction with the first and second chains, the several first connecting gears and several second connecting gears respectively drive the several air guide plates to rotate synchronously.
[0011] Preferably, the transmission mechanism further includes a support rod and a first handle. One end of the support rod is fixedly connected to one side of the uppermost second connecting gear, and one end of the extension rod is fixedly connected to the other end of the support rod. The first handle is fixedly connected to one side of the drive gear. Through the first handle, the drive gear can be easily rotated, causing the drive gear to drive the extension rod to rotate, thereby the extension rod drives the support rod to rotate, and then the support rod drives the uppermost second connecting gear to rotate.
[0012] Preferably, the elastic locking mechanism further includes a support ring, the inner wall of which is fixedly connected to the outer wall of the extension rod, and one end of the support spring is fixedly connected to one side of the support ring; pulling the sliding ring to the right side of the extension rod causes the sliding ring to drive the locking block to separate from the adjusting gear, while the sliding ring drives the support spring to compress, thereby releasing the restriction of the drive gear.
[0013] Preferably, the air guiding mechanism further includes an air guiding groove, which is formed on the inner wall of the air supply duct and is close to the outer side of several air guiding plates. The air guiding groove is connected to the inside of the air guiding tube. Due to the obstruction of several air guiding plates, it is convenient to guide part of the air into the air guiding tube and divert the air, so that the air enters from the air guiding tube and flows out through the gap created by the overlap of the obstruction plate and the fixed plate, thereby reducing the air velocity in the air supply duct.
[0014] Preferably, the driven adjustment mechanism further includes a rubber pad, a second handle, a shaped plate, a connecting cylinder, and an air outlet pipe. One side of the rubber pad is fixedly connected to one side of several barrier plates, and the other side of the rubber pad is in contact with one side of several fixed plates. The driven gear is fixedly connected to one side of the second handle. The rotating ring is rotatably connected to the connecting cylinder on the side away from the air guide tube. The shaped plate is fixedly connected to the bottom of the outer wall of the connecting cylinder. One end of the shaped plate is fixedly connected to the bottom of the air guide tube, and one end of the connecting cylinder is fixedly connected to the air outlet pipe. When the fixed plate and the barrier plate are misaligned, the rubber pad ensures a seal between the fixed plate and the barrier plate.
[0015] Preferably, the limiting mechanism further includes a mounting plate, one end of which is fixedly connected to one side of the air duct, and the outer wall of the extension rod passes through both sides of the mounting plate. One side of the adjusting gear is fixedly connected to one side of the mounting plate. Due to the force of the telescopic spring, the sliding ring moves on the outer wall of the extension rod, causing the sliding ring to engage with the locking block and the adjusting gear, thereby limiting the position and angle of the drive gear.
[0016] Preferably, the magnetic snap-fit mechanism further includes a slider, which is slidably connected to the outer wall of the guide rod. One end of the slider is fixedly connected to one side of the rack, and the iron sheet is fixedly connected to the top of the slider. The outer wall of the guide rod passes through the top and bottom of the iron sheet. Pulling the slider upward causes it to slide the iron sheet on the guide rod, thereby causing the slider to separate the rack from the driven gear. When the iron sheet is magnetically attracted to the magnetic block, the position of the slider and the rack is restricted, thus releasing the restriction on the driven gear.
[0017] Preferably, the elastic barrier mechanism further includes a sliding plate, which is slidably connected inside the slide groove, and the outer wall of the sliding plate is adapted to the inner wall of the slide groove. One end of the stop block is fixedly connected to one side of the sliding plate. Due to the restriction of the slide groove on the sliding plate, the sliding plate can move laterally inside the slide groove.
[0018] Preferably, one end of the telescopic spring is fixedly connected to one side of the slide plate, and the other end is fixedly connected to the inner wall of the slide groove; when the stop block moves, the stop block can drive the slide plate to move inside the slide groove, and at the same time the slide plate drives the telescopic spring to compress or reset. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention; Figure 2 This is a left view of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention; Figure 3 This is a right view of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention; Figure 4 This is a cross-sectional view of the air supply duct of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention. Figure 5 This is a structural diagram of the air guide plate of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention; Figure 6 This is a first chain structure diagram of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention; Figure 7 This invention provides an air regulating device for centrifugal fans that facilitates wind speed adjustment. Figure 6 Structure diagram of region A in the middle; Figure 8 This is a structural diagram of the drive gear of a centrifugal fan regulating device for easy wind speed adjustment according to the present invention; Figure 9 This is an exploded view of the adjusting gear and extension rod of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention; Figure 10 This is a cross-sectional view of the extension rod of an air regulating device for a centrifugal fan that facilitates wind speed adjustment according to the present invention; Figure 11 This is a structural diagram of a fixing plate for a centrifugal fan air regulating device that facilitates wind speed adjustment according to the present invention; Figure 12 This is a structural diagram of a magnetic ring for a centrifugal fan air regulating device that facilitates wind speed adjustment according to the present invention; Figure 13 This is a structural diagram of the driven gear of a centrifugal fan regulating device for easy wind speed adjustment according to the present invention.
[0020] The reference numerals in the accompanying drawings include: 1. Centrifuge body; 2. Air supply duct; 3. Windbreak mechanism; 301. Concave mounting base; 302. Upper baffle; 303. Lower baffle; 304. Air guide plate; 305. First connecting gear; 306. First chain; 307. Connecting rod; 308. Second connecting gear; 309. Second chain 4. Transmission mechanism; 401. Support rod; 402. Extension rod; 403. Sliding groove; 404. Drive gear; 405. First handle; 5. Elastic snap-fit mechanism; 501. Support ring; 502. Support spring; 503. Sliding ring; 504. Snap-fit block; 6. Air guide mechanism; 601. Air guide tube; 602. Connecting hole; 603. Fixing plate; 604. Air guide slot; 7. Driven adjustment mechanism; 701. Rotating ring; 702. Baffle plate; 703. Rubber pad; 704. Driven gear; 705. Second handle; 706. Irregularly shaped plate; 707. Connecting cylinder; 708. Air outlet duct; 8. Limiting mechanism; 801. Mounting plate; 802. Adjusting gear; 9. Magnetic snap-fit mechanism; 901. Guide rod; 902. Magnetic block; 903. Slider; 904. Iron sheet; 905. Rack and pinion; 10. Elastic barrier mechanism; 1001. Slide groove; 1002. Slide plate; 1003. Stop block; 1004. Telescopic spring. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] like Figures 1-13 As shown, a centrifugal fan wind speed regulating device includes a centrifuge body 1, an air supply duct 2 fixedly connected to the top of the centrifuge body 1, and also includes a wind baffle mechanism 3, a transmission mechanism 4, an elastic snap-fit mechanism 5, an air guide mechanism 6, a driven adjustment mechanism 7, a limiting mechanism 8, a magnetic snap-fit mechanism 9, and an elastic blocking mechanism 10. The wind-blocking mechanism 3 includes several wind guide plates 304, which are rotatably mounted on the inner wall of the air supply duct 2. One end of each of the wind guide plates 304 located at the top of one side of the air supply duct 2 is fixedly connected to a first connecting gear 305, and a first chain 306 meshes with the outer side of each of the first connecting gears 305. One end of each of the wind guide plates 304 located at the bottom of one side of the air supply duct 2 is fixedly connected to a second connecting gear 308. A second chain 309 engages on the outer side. Several first connecting gears 305 and several second connecting gears 308 are staggered. A connecting rod 307 is fixedly connected between the lowermost first connecting gear 305 and the uppermost second connecting gear 308. The windbreak mechanism 3 also includes a concave mounting seat 301, an upper baffle 302, and a lower baffle 303. Two concave mounting seats 301 are provided. One side of each concave mounting seat 301 is fixedly connected to both sides of the inner wall of the air supply duct 2. The interior of 301 is connected to the outside of the air supply duct 2. Several air guide plates 304 are rotatably connected to one side of two concave mounting bases 301 at both ends, and one end of each air guide plate 304 passes through the outside of a concave mounting base 301. The first connecting gear 305 and the second connecting gear 308 are both located inside a concave mounting base 301. The top of the two concave mounting bases 301 is fixedly connected to the top of the uppermost air guide plate 304 with the same upper baffle 302. The bottom of the two concave mounting bases 301 is fixedly connected to the bottom of the lowermost air guide plate 304 with the same lower baffle 303. In the initial state, the tilt angle of the air guide plates 304 is 45 degrees. When the uppermost second connecting gear 308 rotates, the second connecting gear 308 drives the first connecting gear 305 to rotate through the connecting rod 307. In conjunction with the first chain 306 and the second chain 309, the several first connecting gears 305 and the several second connecting gears 308 drive the several air guide plates 304 to rotate synchronously. The transmission mechanism 4 includes an extension rod 402, which is disposed at one end of the connecting rod 307. A sliding groove 403 is provided on one side of the outer wall of the extension rod 402. A drive gear 404 is slidably connected to the inner side of the outer wall of the extension rod 402 near the sliding groove 403. The transmission mechanism 4 also includes a support rod 401 and a first handle 405. One end of the support rod 401 is fixedly connected to one side of the uppermost second connecting gear 308. One end of the extension rod 402 is fixedly connected to the other end of the support rod 401. The first handle 405 is fixedly connected to one side of the drive gear 404. Rotating the drive gear 404 causes the drive gear 404 to drive the extension rod 402 to rotate, thereby causing the extension rod 402 to drive the support rod 401 to rotate, and then the support rod 401 drives the uppermost second connecting gear 308 to rotate. The elastic blocking mechanism 10 includes a slide groove 1001, which is formed on the inner wall of a sliding groove 403. A stop 1003 is slidably disposed inside the slide groove 1001, and a telescopic spring 1004 is disposed between the inner wall of the slide groove 1001 and the stop 1003. One side of the stop 1003 contacts one side of the drive gear 401. The elastic blocking mechanism 10 also includes a sliding plate 1002, which is slidably connected inside the slide groove 1001, and the outer wall of the sliding plate 1002 is adapted to the inner wall of the slide groove 1001. One end of 03 is fixedly connected to one side of the slide plate 1002, and one end of the telescopic spring 1004 is fixedly connected to one side of the slide plate 1002, and the other end is fixedly connected to the inner wall of the slide groove 1001. In the initial state, due to the action of the support spring 502, the support spring 502 supports the slide plate 1002, and the slide plate 1002 supports the stop block 1003, so that the left side of the stop block 1003 contacts the right side of the drive gear 404, thereby the stop block 1003 restricts the drive gear 404 to the left side of the slide groove 403; The elastic locking mechanism 5 includes a support spring 502, which is disposed on the outer wall of the extension rod 402. A sliding ring 503 is fixedly connected to one end of the support spring 502. The inner wall of the sliding ring 503 is slidably connected to the extension rod 402. A plurality of locking blocks 504 are fixedly connected to one side of the sliding ring 503, and these locking blocks 504 are arranged in a circular array at equal intervals. The elastic locking mechanism 5 also includes a support ring 501, whose inner wall is fixedly connected to the outer wall of the extension rod 402. One end of the support spring 502 is fixedly connected to one side of the support ring 501. The limiting mechanism 8 includes an adjusting gear 802. The adjusting gear is configured... On the outside of the extension rod 402, and with the adjusting gear 802 meshing with several locking blocks 504, the limiting mechanism 8 also includes a mounting plate 801. One end of the mounting plate 801 is fixedly connected to one side of the air duct 601, and the outer wall of the extension rod 402 passes through both sides of the mounting plate 801. One side of the adjusting gear 802 is fixedly connected to one side of the mounting plate 801. In the initial state, due to the force of the telescopic spring 1004, the sliding ring 503 moves on the outer wall of the extension rod 402, causing the sliding ring 503 to drive the locking blocks 504 to mesh with the adjusting gear 802, thereby limiting the position and angle of the driving gear 404. Pull the sliding ring 503 to the right of the extension rod 402, so that the sliding ring 503 drives the locking block 504 to separate from the adjusting gear 802. At the same time, the sliding ring 503 drives the support spring 502 to compress, thereby releasing the restriction of the drive gear 404. Then, after the adjustment is completed, release the sliding ring 503. Due to the reaction force of the support spring 502, several locking blocks 504 on one side of the sliding ring 503 can re-engage with the adjusting gear 802, thereby limiting the rotation angle of the drive gear 404 and adjusting the air volume of the air supply duct 2. The air guiding mechanism 6 includes an air guiding duct 601, which is fixedly connected to one side of the air supply duct 2. One end of the air guiding duct 601 has a connection hole 602. Several fixing plates 603 are fixedly connected to the inner wall of the connection hole 602. The several fixing plates 603 are arranged in a ring array at equal intervals. The air guiding mechanism 6 also includes an air guiding groove 604, which is opened on the inner wall of the air supply duct 2 and is close to the outer side of several air guiding plates 304. The air guiding groove 604 is connected to the inside of the air guiding duct 601. In the initial state, when air is supplied inside the air supply duct 2, due to the obstruction of several air guiding plates 304, it is easy to guide part of the air into the air guiding duct 601 to divert the air. The air enters from the air guiding duct 601 and flows into the air outlet duct 708 through the gap created by the overlap of the obstruction plate 702 and the fixing plate 603, and finally flows out from the air outlet duct 708. This can reduce the air velocity in the air supply duct 2. The driven adjustment mechanism 7 includes a rotating ring 701, which is rotatably connected to one end of the air guide duct 601. A baffle plate 702 is fixedly connected to one side of each of the fixed plates 603 on the inner wall of the rotating ring 701. The width of the baffle plate 702 is slightly larger than the width of the fixed plates 603. A driven gear 704 is fixedly connected to the outer wall of the rotating ring 701. The driving gear 404 and the driven gear 704 are meshed. The driven adjustment mechanism 7 also includes a rubber pad 703, a second handle 705, a shaped plate 706, a connecting cylinder 707, and an air outlet duct 708. One side of the rubber pad 703 is fixedly connected to one of the baffle plates 702. On one side, the rubber pad 703 is attached to one side of several fixed plates 603. A second handle 705 is fixedly connected to one side of the driven gear 704. A connecting cylinder 707 is rotatably connected to the side of the rotating ring 701 away from the air guide 601. A special-shaped plate 706 is fixedly connected to the bottom of the outer wall of the connecting cylinder 707. The special-shaped plate 706 is L-shaped. One end of the special-shaped plate 706 is fixedly connected to the bottom of the air guide 601. One end of the connecting cylinder 707 is fixedly connected to the air outlet pipe 708. In the initial state, the driving gear 404 and the driven gear 704 are meshed. At this time, the distance between the first handle 405 and the second handle 705 is the minimum. Pressing the stop blocks 1003 into the two slide grooves 1001 causes the stop blocks 1003 to move the slide plate 1002 within the slide grooves 1001. This causes the slide plate 1002 to compress the telescopic spring 1004, releasing the restriction on the drive gear 404. The drive gear 404 is then pulled to the right side of the slide groove 403, moving from the left side to the right side. Subsequently, due to the reaction force of the telescopic spring 1004, the stop blocks 1003 return to their original position, bringing their right side into contact with the left side of the drive gear 404, thus restoring contact. The position of the driving gear 404 is restricted, at which time the driving gear 404 is separated from the driven gear 704. At this time, the driven gear 704 is pulled, causing the driven gear 704 to drive the rotating ring 701 to rotate. When the driven gear 704 rotates forty-five degrees, the fixed plate 603 and the baffle plate 702 are misaligned. Due to the action of the rubber pad 703, the fixed plate 603 and the baffle plate 702 are sealed. At this time, the air guide duct 601 is not connected to the air outlet duct 708. Since the air guide duct 601 no longer diverts the air, the air velocity of the air supply duct 2 can be increased. The magnetic snap-fit mechanism 9 includes a guide rod 901, the bottom end of which is fixedly connected to one side of the top of the air duct 601. A magnetic block 902 is fixedly connected to the top of the guide rod 901. A rack 905 is slidably arranged on the outer side of the guide rod 901. An iron piece 904 is provided on the outer wall of the guide rod 901 to limit the rack 905. The iron piece 904 and the magnetic block 902 are magnetically attracted to each other. The rack 905 and the driven gear 704 are meshed. The magnetic snap-fit mechanism 9 also includes a slider 903, which is slidably connected to the outer wall of the guide rod 901. One end of the slider 903 is fixedly connected to one side of the rack 905. Next, the iron sheet 904 is fixedly connected to the top of the slider 903, and the outer wall of the guide rod 901 passes through the top and bottom of the iron sheet 904. In the initial state, the slider 903 is pulled upward, so that the slider 903 drives the iron sheet 904 to slide on the guide rod 901. Thus, the slider 903 drives the rack 905 to separate from the driven gear 704. When the iron sheet 904 is magnetically attracted to the magnetic block 902, the position of the slider 903 and the rack 905 is restricted. Several baffles 702 on the inner wall of the rotating ring 701 overlap with several fixed plates 603, so that the air duct 601 is connected to the air outlet 708. Pull the slider 903 down, causing the slider 903 to separate the iron piece 904 from the magnetic block 902. Then, the slider 903 drives the rack 905 to move downward, so that the rack 905 can re-engage with the driven gear 704, thereby limiting the position of the rotating ring 701.
[0023] As described above, the specific implementation of the present invention is as follows: In the initial state, the inclination angle of several guide plates 304 is 45 degrees, and the driving gear 404 and the driven gear 704 are meshed. At this time, the distance between the first handle 405 and the second handle 705 is the minimum. Due to the action of the support spring 502, the support spring 502 supports the slide plate 1002, and the slide plate 1002 supports the stop block 1003, so that the left side of the stop block 1003 contacts the right side of the driving gear 404. Thus, the stop block 1003 restricts the driving gear 404 to the left side of the sliding groove 403. Pulling the slider 903 upward causes the slider 903 to drive the iron piece 904 to slide on the guide rod 901. Thus, the slider 903 drives the rack 905 to separate from the driven gear 704. When the iron piece 904 is magnetically attracted to the magnetic block 902, it thereby affects the slider 903. The position of the rack 905 is restricted, the restriction on the driven gear 704 is released, and due to the force of the extension spring 1004, the sliding ring 503 is driven to move on the outer wall of the extension rod 402, so that the sliding ring 503 drives the snap block 504 to mesh with the adjusting gear 802, thereby restricting the position angle of the driving gear 404. Several baffles 702 on the inner wall of the rotating ring 701 overlap with several fixed plates 603, so that the air guide duct 601 is connected to the air outlet duct 708. When air is supplied inside the air supply duct 2, due to the obstruction of several air guides 304, it is easy to guide part of the air into the air guide duct 601, and the air is diverted. The air enters from the air guide duct 601 and flows into the air outlet duct 708 through the gap created by the overlap of the baffles 702 and the fixed plates 603, and finally flows out from the air outlet duct 708, thereby reducing the air speed in the air supply duct 2. Pressing the stop blocks 1003 into the two slide grooves 1001 causes the stop blocks 1003 to move the slide plate 1002 within the slide groove 1001. This causes the slide plate 1002 to compress the telescopic spring 1004, thus releasing the restriction on the drive gear 404. The drive gear 404 is then pulled to the right side of the slide groove 403, moving from the left side to the right side. Subsequently, due to the reaction force of the telescopic spring 1004, the stop blocks 1003 return to their original position, bringing their right side into contact with the left side of the drive gear 404, thus restricting the position of the drive gear 404 again. At this point, the drive gear 404 separates from the driven gear 704. The driven gear 704 is then pulled... 4. This causes the driven gear 704 to drive the rotating ring 701 to rotate. When the driven gear 704 rotates forty-five degrees, the fixed plate 603 and the barrier plate 702 are misaligned. Due to the action of the rubber pad 703, the fixed plate 603 and the barrier plate 702 are sealed. Pull the slider 903 down, so that the slider 903 drives the iron piece 904 to separate from the magnetic block 902. Then the slider 903 drives the rack 905 to move downward, so that the rack 905 can re-engage with the driven gear 704, thereby restricting the position of the rotating ring 701. At this time, the air guide 601 is not connected to the air outlet 708. Since the air guide 601 no longer diverts the air, the air velocity of the air supply duct 2 can be increased. Pull the sliding ring 503 to the right of the extension rod 402, causing the sliding ring 503 to cause the locking block 504 to separate from the adjusting gear 802. At the same time, the sliding ring 503 causes the support spring 502 to compress, thereby releasing the restriction of the drive gear 404. Then, rotate the drive gear 404, causing the drive gear 404 to drive the extension rod 402 to rotate. In turn, the extension rod 402 drives the support rod 401 to rotate, and the support rod 401 drives the uppermost second connecting gear 308 to rotate. Thus, the second connecting gear 308 is connected to the connecting rod 307. The first connecting gear 305 is driven to rotate, which, in conjunction with the first chain 306 and the second chain 309, causes several first connecting gears 305 and several second connecting gears 308 to drive several air guide plates 304 to rotate synchronously. After adjustment, the sliding ring 503 is released. Due to the reaction force of the support spring 502, several locking blocks 504 on one side of the sliding ring 503 can be driven to re-engage with the adjusting gear 802, thereby limiting the rotation angle of the drive gear 404 and thus adjusting the air volume of the air supply duct 2.
[0024] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A centrifugal fan speed regulating device, comprising a centrifuge body (1), wherein an air supply duct (2) is fixedly connected to the top of the centrifuge body (1), characterized in that, It also includes a windbreak mechanism (3), a transmission mechanism (4), an elastic locking mechanism (5), an air guide mechanism (6), a driven adjustment mechanism (7), a limiting mechanism (8), a magnetic locking mechanism (9), and an elastic barrier mechanism (10). The wind-blocking mechanism (3) includes a wind guide plate (304). Several wind guide plates (304) are provided. Several wind guide plates (304) are rotatably set on the inner wall of the air supply duct (2). Several wind guide plates (304) located at the top of one side of the air supply duct (2) are fixedly connected to one end of a first connecting gear (305). A first chain (306) meshes with the outer side of several first connecting gears (305). Several wind guide plates (304) located at the bottom of one side of the air supply duct (2) are fixedly connected to one end of a second connecting gear (308). A second chain (309) meshes with the outer side of several second connecting gears (308). Several first connecting gears (305) and several second connecting gears (308) are staggered. A connecting rod (307) is fixedly connected between the bottom first connecting gear (305) and the top second connecting gear (308). The transmission mechanism (4) includes an extension rod (402), which is located at one end of the connecting rod (307). A sliding groove (403) is provided on one side of the outer wall of the extension rod (402), and a drive gear (404) is slidably connected to the inner side of the outer wall of the extension rod (402) near the sliding groove (403). The elastic blocking mechanism (10) includes a slide groove (1001), which is opened on the inner wall of the sliding groove (403). A stop block (1003) is slidably arranged inside the slide groove (1001), and a telescopic spring (1004) is arranged between the inner wall of the slide groove (1001) and the stop block (1003). One side of the stop block (1003) contacts one side of the drive gear (401). The elastic snap-fit mechanism (5) includes a support spring (502), which is disposed on the outer wall of the extension rod (402). A sliding ring (503) is fixedly connected to one end of the support spring (502). The inner wall of the sliding ring (503) is slidably connected to the extension rod (402). Several snap-fit blocks (504) are fixedly connected to one side of the sliding ring (503). The several snap-fit blocks (504) are arranged in a ring array at equal intervals. The air guiding mechanism (6) includes an air guide tube (601), which is fixedly connected to one side of the air supply duct (2). A connection hole (602) is opened at one end of the air guide tube (601), and several fixing plates (603) are fixedly connected to the inner wall of the connection hole (602). The several fixing plates (603) are arranged in a ring array at equal intervals. The limiting mechanism (8) includes an adjusting gear (802), which is located outside the extension rod (402), and the adjusting gear (802) is engaged with a plurality of snap-fit blocks (504); The driven adjustment mechanism (7) includes a rotating ring (701), which is rotatably connected to one end of the air guide tube (601). A baffle plate (702) is fixedly connected to one side of a number of fixed plates (603) on the inner wall of the rotating ring (701). A driven gear (704) is fixedly connected to the outer wall of the rotating ring (701). The driving gear (404) and the driven gear (704) are meshed. The magnetic snap-fit mechanism (9) includes a guide rod (901), the bottom end of which is fixedly connected to one side of the top of the air duct (601), a magnetic block (902) is fixedly connected to the top of the guide rod (901), a rack (905) is slidably arranged on the outside of the guide rod (901), and an iron piece (904) for limiting the rack (905) is provided on the outer wall of the guide rod (901). The iron piece (904) and the magnetic block (902) are magnetically attracted to each other, and the rack (905) and the driven gear (704) are meshed.
2. The centrifugal fan air regulating device for easy wind speed adjustment according to claim 1, characterized in that: The windbreak mechanism (3) further includes a concave mounting base (301), an upper baffle (302), and a lower baffle (303). Two concave mounting bases (301) are provided, with one side of each base fixedly connected to both sides of the inner wall of the air supply duct (2). The interior of one concave mounting base (301) is connected to the outer side of the air supply duct (2). Several guide plates (304) are rotatably connected at both ends to one side of the two concave mounting bases (301), and the several guide plates (304) are... 304) One end of each of them passes through the outside of a concave mounting base (301). The first connecting gear (305) and the second connecting gear (308) are both located inside a concave mounting base (301). The top of the two concave mounting bases (301) is fixedly connected to the top of the uppermost air guide plate (304) with the same upper baffle (302). The bottom of the two concave mounting bases (301) is fixedly connected to the bottom of the lowermost air guide plate (304) with the same lower baffle (303).
3. The air regulating device for a centrifugal fan with easily adjustable wind speed according to claim 1, characterized in that: The transmission mechanism (4) further includes a support rod (401) and a first handle (405). One end of the support rod (401) is fixedly connected to one side of the uppermost second connecting gear (308), one end of the extension rod (402) is fixedly connected to the other end of the support rod (401), and the first handle (405) is fixedly connected to one side of the drive gear (404).
4. The air regulating device for a centrifugal fan with easily adjustable wind speed according to claim 1, characterized in that: The elastic snap-fit mechanism (5) also includes a support ring (501), the inner wall of which is fixedly connected to the outer wall of the extension rod (402), and one end of the support spring (502) is fixedly connected to one side of the support ring (501).
5. The air regulating device for a centrifugal fan with easily adjustable wind speed according to claim 1, characterized in that: The air guiding mechanism (6) also includes an air guiding groove (604), which is opened on the inner wall of the air supply duct (2) and is close to the outer side of several air guiding plates (304). The air guiding groove (604) is connected to the inside of the air guiding tube (601).
6. The air regulating device for a centrifugal fan with easily adjustable wind speed according to claim 1, characterized in that: The driven adjustment mechanism (7) further includes a rubber pad (703), a second handle (705), a shaped plate (706), a connecting cylinder (707), and an air outlet pipe (708). One side of the rubber pad (703) is fixedly connected to one side of several baffle plates (702), and the other side of the rubber pad (703) is in contact with one side of several fixed plates (603). One side of the driven gear (704) is fixedly connected to the second handle (705). The rotating ring (701) is rotatably connected to the connecting cylinder (707) on the side away from the air guide pipe (601). The bottom of the outer wall of the connecting cylinder (707) is fixedly connected to the shaped plate (706). One end of the shaped plate (706) is fixedly connected to the bottom of the air guide pipe (601), and one end of the connecting cylinder (707) is fixedly connected to the air outlet pipe (708).
7. The air regulating device for a centrifugal fan with easily adjustable wind speed according to claim 1, characterized in that: The limiting mechanism (8) also includes a mounting plate (801), one end of which is fixedly connected to one side of the air duct (601), and the outer wall of the extension rod (402) penetrates both sides of the mounting plate (801), and one side of the adjusting gear (802) is fixedly connected to one side of the mounting plate (801).
8. The air regulating device for a centrifugal fan with easily adjustable wind speed according to claim 1, characterized in that: The magnetic snap-fit mechanism (9) also includes a slider (903), which is slidably connected to the outer wall of the guide rod (901). One end of the slider (903) is fixedly connected to one side of the rack (905), and the iron sheet (904) is fixedly connected to the top of the slider (903). The outer wall of the guide rod (901) passes through the top and bottom of the iron sheet (904).
9. A centrifugal fan air regulating device for easy wind speed adjustment according to claim 1, characterized in that: The elastic barrier mechanism (10) further includes a slide plate (1002), which is slidably connected to the inside of the slide groove (1001), and the outer wall of the slide plate (1002) is adapted to the inner wall of the slide groove (1001). One end of the stop block (1003) is fixedly connected to one side of the slide plate (1002).
10. A centrifugal fan air regulating device for easy wind speed adjustment according to claim 9, characterized in that: One end of the telescopic spring (1004) is fixedly connected to one side of the slide plate (1002), and the other end is fixedly connected to the inner wall of the slide groove (1001).