CN210738876U - Centrifugal fan with noise reduction function - Google Patents
Centrifugal fan with noise reduction function Download PDFInfo
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- CN210738876U CN210738876U CN201921514239.5U CN201921514239U CN210738876U CN 210738876 U CN210738876 U CN 210738876U CN 201921514239 U CN201921514239 U CN 201921514239U CN 210738876 U CN210738876 U CN 210738876U
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- fixed
- noise reduction
- plate
- air inlet
- inlet pipe
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Abstract
The utility model belongs to the technical field of centrifugal fans, in particular to a centrifugal fan with noise reduction function, which comprises a shell, wherein the bottom of the shell is provided with a buffer mechanism, the inside of the shell is provided with a fixed lantern ring, the outer ring of the fixed lantern ring is fixed with impellers distributed along the array of the fixed lantern ring, the inner ring of the fixed lantern ring is movably sleeved with a fixed shaft, one end of the fixed shaft extending out of the shell is fixed with an air inlet pipe fixedly sleeved with the shell, the width of the air inlet pipe is gradually increased along the direction from the impellers to the air inlet pipe, the outer ring of the fixed shaft is fixed with a plurality of groups of noise reduction mechanisms, the noise reduction mechanisms are positioned inside the air inlet pipe, the noise reduction mechanisms comprise noise reduction plates fixed with the outer ring of the fixed shaft, through holes are arranged on the noise reduction plates, and the other ends of the noise reduction plates are fixed with the inner wall of the air inlet pipe, increasing the service life thereof.
Description
Technical Field
The utility model relates to a centrifugal fan technical field especially relates to a centrifugal fan with function of making an uproar is fallen.
Background
The centrifugal fan is a driven fluid machine which increases the gas pressure and discharges gas by means of input mechanical energy, and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; the centrifugal fan accelerates gas by utilizing an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, then decelerates and changes the flow direction, so that the kinetic energy is converted into the potential energy, and the centrifugal fan can make a sound due to the air flow in the working process, so that a larger sound is generated, and the environment is polluted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of centrifugal fan with function of making an uproar has reduced the problem of centrifugal fan noise.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a centrifugal fan with noise reduction function comprises a shell, wherein a buffer mechanism is arranged at the bottom of the shell, a fixed lantern ring is arranged in the shell, impellers distributed along the fixed lantern ring in an array manner are fixed on the outer ring of the fixed lantern ring, the inner ring of the fixed lantern ring is movably sleeved with a fixed shaft, one end of the fixed shaft extending out of the shell is fixed with an air inlet pipe fixedly sleeved with the shell, the width of the air inlet pipe is gradually increased along the direction from the impeller to the air inlet pipe, a plurality of groups of noise reduction mechanisms are fixed on the outer ring of the fixed shaft, and the noise reduction mechanism is positioned inside the air inlet pipe and comprises a noise reduction plate fixed with the outer ring of the fixed shaft, the noise reduction plate is provided with a through hole, the other end of the noise reduction plate is fixed with the inner wall of the air inlet pipe, one side of the noise reduction plate, which is far away from the shell, is fixed with a drainage plate with a V-shaped structure, and the other side of the noise reduction plate is fixed with silencing cotton.
Preferably, a lantern ring is fixedly sleeved at one end of the fixed shaft, which extends out of the shell, the outer ring of the lantern ring is fixedly provided with clamping plates distributed along the lantern ring in an array manner, and the other end of each clamping plate is fixed with the inner wall of the air inlet pipe.
Preferably, the one end of keeping away from the shell of air-supply line is fixed with the guard plate of loop configuration, and the guard plate is located the one side that the shell was kept away from to the clamp plate, is fixed with the filter screen that cup joints with the fixed axle activity between guard plate and the clamp plate.
Preferably, a rotating shaft is fixed at one end, away from the fixed shaft, of the fixed lantern ring, and a motor is fixed at one side, extending out of the shell, of the rotating shaft
Preferably, the noise reduction mechanisms are spirally distributed on the outer ring of the fixed shaft along the direction from the air inlet pipe to the impeller, and the distances between adjacent noise reduction mechanisms are the same
Preferably, buffer gear includes the bottom plate, the top both ends of bottom plate all are fixed with the backup pad, the spout has all been seted up to one side that two sets of backup pads are close to each other, slide between two sets of spouts and cup jointed same group's fixed plate, the top of fixed plate is fixed with the bottom of shell, the bottom of fixed plate is fixed with first support column, hollow structure's second support column has been cup jointed in the other end activity of first support column, the one end that first support column stretches into the second support column is fixed with the slide, be fixed with the outside first spring that is located first support column outer lane between the top of slide and the inner wall of second support column, be fixed with the second spring between the bottom of slide and the bottom inner wall of second support column.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a noise reduction board, amortization cotton, air-supply line, filter screen and drainage board carry out the drainage direction to the air that gets into from the air-supply line to filter the impurity in the air, avoid causing the damage to centrifugal fan, simultaneously, absorb the noise that produces because of the air flow through amortization cotton, avoid the polluted environment; secondly, the elastic potential energy generated by the sliding plate, the sliding groove and the second supporting column is converted into kinetic energy and gravitational potential energy, so that the vibration of the centrifugal fan during working is reduced, the abrasion degree of the centrifugal fan is reduced, and the service life of the centrifugal fan is prolonged.
Drawings
Fig. 1 is the utility model provides a centrifugal fan's with function of making an uproar falls structure schematic diagram.
Fig. 2 is a schematic structural view of the air inlet pipe of the present invention.
Fig. 3 is a schematic structural view of an air inlet pipe according to the present invention.
Fig. 4 is a schematic structural view of the noise reduction mechanism of the present invention.
Reference numbers in the figures: 1. a buffer mechanism; 1-1, a bottom plate; 1-2, a support plate; 2. a housing; 3. an air outlet; 4. an air inlet pipe; 5. a noise reduction mechanism; 6. an impeller; 7. a fixed shaft; 8. a noise reduction plate; 9. a drainage plate; 10. silencing cotton; 11. a collar; 12. a clamping plate; 13. a filter screen; 14. an electric motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-4, a centrifugal fan with noise reduction function comprises a housing 2, a buffer mechanism 1 is arranged at the bottom of the housing 2, a fixed lantern ring is arranged inside the housing 2, impellers 6 distributed along the fixed lantern ring in an array are fixed on the outer ring of the fixed lantern ring, a fixed shaft 7 is movably sleeved on the inner ring of the fixed lantern ring, an air inlet pipe 4 fixedly sleeved with the housing 2 is fixed at one end of the fixed shaft 7 extending out of the housing 2, the width of the air inlet pipe 4 is gradually increased along the direction from the impellers 6 to the air inlet pipe 4, a plurality of groups of noise reduction mechanisms 5 are fixed on the outer ring of the fixed shaft 7, the noise reduction mechanisms 5 are positioned inside the air inlet pipe 4, each noise reduction mechanism 5 comprises a noise reduction plate 8 fixed on the outer ring of the fixed shaft 7, a through hole is formed in each noise reduction plate 8, the other end of each noise reduction plate 8 is fixed on the inner, the other side of the noise reduction plate 8 is fixed with silencing cotton 10; impurity and dust in the air are filtered through the filter screen 13 to avoid entering the centrifugal fan, the service life of the centrifugal fan is prevented from being reduced, the air is drained through the drainage plate 9, the noise reduction plate 8 and the silencing cotton 10, and the air is fully contacted with the silencing cotton 10 through the through holes, so that noise generated by air flowing is absorbed, and the air can not enter the shell 2 from the air inlet pipe 4 normally; the service life of the centrifugal fan is prolonged, the noise generated by the centrifugal fan is effectively reduced, and the pollution to the environment is reduced.
Furthermore, a lantern ring 11 is fixedly sleeved at one end of the fixed shaft 7, which extends out of the shell 2, clamping plates 12 distributed along the lantern ring 11 are fixed on the outer ring of the lantern ring 11, and the other end of each clamping plate 12 is fixed with the inner wall of the air inlet pipe 4; the clamping plate 12 has a fixing effect on the filter screen 13, so that the filter screen 13 is prevented from deforming.
Especially, the one end of keeping away from shell 2 of air-supply line 4 is fixed with the guard plate of loop configuration, and the guard plate is located the one side that shell 2 was kept away from to clamp plate 12, is fixed with the filter screen 13 that cup joints with the activity of fixed axle 7 between guard plate and the clamp plate 12, presss from both sides tightly fixedly with filter screen 13 through guard plate and clamp plate 12, avoids the great filter screen 13 that leads to of wind speed to warp the damage when the air-supply line 4 air inlet, influences the filter effect.
It is worth to say that a rotating shaft is fixed at one end of the fixed lantern ring, which is far away from the fixed shaft 7, and a motor 14 is fixed at one side of the rotating shaft, which extends out of the shell 2; the motor drives the rotating shaft, and then the rotating shaft drives the impeller 6 to work, so that the fan can normally operate.
In addition, the noise reduction mechanisms 5 are spirally distributed on the outer ring of the fixed shaft 7 along the direction from the air inlet pipe 4 to the impeller 6, and the distances between the adjacent noise reduction mechanisms 5 are the same; the air inlet of the centrifugal fan from the air inlet pipe 4 can not be influenced by the spiral arrangement of the noise reduction mechanism 5.
The buffer mechanism 1 comprises a bottom plate 1-1, wherein supporting plates 1-2 are fixed at two ends of the top of the bottom plate 1-1, sliding grooves are formed in one sides, close to each other, of the two groups of supporting plates 1-2, a same group of fixing plates are sleeved between the two groups of sliding grooves in a sliding mode, the top of each fixing plate is fixed with the bottom of the shell 2, a first supporting column is fixed at the bottom of each fixing plate, a second supporting column of a hollow structure is movably sleeved at the other end of the first supporting column, a sliding plate is fixed at one end, extending into the second supporting column, of the first supporting column, a first spring located outside the outer ring of the first supporting column is fixed between the top of the sliding plate and the inner wall of the second supporting column, and a second spring is fixed between the; through first spring, second spring with centrifugal fan vibration buffering that the during operation produced, secondly, elastic potential energy conversion that rethread slide, spout and second support column produced it kinetic energy and gravitational potential energy to alleviateed centrifugal fan vibration at the during operation, reduced centrifugal fan's degree of wear, increased its life.
The working principle is as follows: when the centrifugal fan works, the rotating shaft is driven to rotate by the motor, and then the fixed lantern ring and the impeller 6 are driven to rotate to drive the centrifugal fan to work, when air enters from the air inlet pipe 4, dust particles in the air are filtered and intercepted by the filter screen 13, so that the dust particles are prevented from entering the centrifugal fan to abrade the impeller 6 and the shell 2, and the service life of the centrifugal fan is prolonged; after the air passes through filter screen 13 with guide it to adjacent drainage plate 9 through drainage plate 9, analogize in proper order, simultaneously, the noise that the air collided the production with air-supply line 4 absorbs it through falling through the through-hole on the board 8 and amortization cotton 10 of making an uproar, the noise that centrifugal fan produced has been reduced, when the air got into the inside of shell 2, discharge from air outlet 3 under the effect through impeller 6, the vibration that produces when the motor rotates simultaneously turns into the elastic potential energy of first spring and second spring, through the slide, spout and second support column convert the elastic potential energy that it produced into kinetic energy and gravitational potential energy, thereby avoid centrifugal fan to vibrate at the during operation, centrifugal fan's degree of wear has been reduced, its life has been increased.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The centrifugal fan with the noise reduction function comprises a shell (2) and is characterized in that a buffering mechanism (1) is arranged at the bottom of the shell (2), a fixed sleeve ring is arranged inside the shell (2), impellers (6) distributed along the array of the fixed sleeve ring are fixed on the outer ring of the fixed sleeve ring, a fixed shaft (7) is movably sleeved on the inner ring of the fixed sleeve ring, one end, extending out of the shell (2), of the fixed shaft (7) is fixedly provided with an air inlet pipe (4) fixedly sleeved with the shell (2), the width of the air inlet pipe (4) is gradually increased along the direction from the impellers (6) to the air inlet pipe (4), a plurality of groups of noise reduction mechanisms (5) are fixed on the outer ring of the fixed shaft (7), the noise reduction mechanisms (5) are located inside the air inlet pipe (4), and the noise reduction mechanisms (5) comprise noise reduction plates (8) fixed on the outer ring of the, the noise reduction plate is characterized in that a through hole is formed in the noise reduction plate (8), the other end of the noise reduction plate (8) is fixed to the inner wall of the air inlet pipe (4), a drainage plate (9) of a V-shaped structure is fixed to one side, away from the shell (2), of the noise reduction plate (8), and silencing cotton (10) is fixed to the other side of the noise reduction plate (8).
2. The centrifugal fan with the noise reduction function as claimed in claim 1, wherein a sleeve ring (11) is fixedly sleeved at one end of the fixed shaft (7) extending out of the housing (2), clamping plates (12) distributed along the sleeve ring are fixed on the outer ring of the sleeve ring (11), and the other end of the clamping plate (12) is fixed with the inner wall of the air inlet pipe (4).
3. The centrifugal fan with the noise reduction function according to claim 1, wherein a protection plate with an annular structure is fixed at one end of the air inlet pipe (4) far away from the casing (2), the protection plate is located at one side of the clamping plate (12) far away from the casing (2), and a filter screen (13) movably sleeved with the fixed shaft (7) is fixed between the protection plate and the clamping plate (12).
4. The centrifugal fan with the noise reduction function according to claim 1, wherein a rotating shaft is fixed at one end of the fixing collar far away from the fixing shaft (7), and a motor (14) is fixed at one side of the rotating shaft extending out of the casing (2).
5. The centrifugal fan with the noise reduction function according to claim 1, wherein the noise reduction mechanisms (5) are spirally distributed on the outer ring of the fixed shaft (7) along the direction from the air inlet pipe (4) to the impeller (6), and the distances between the adjacent noise reduction mechanisms (5) are the same.
6. The centrifugal fan with noise reduction function according to claim 1, buffer gear (1) includes bottom plate (1-1), the top both ends of bottom plate (1-1) all are fixed with backup pad (1-2), the spout has all been seted up to one side that two sets of backup pads (1-2) are close to each other, the same group fixed plate has been cup jointed in the slip between two sets of spouts, the top of fixed plate is fixed with the bottom of shell (2), the bottom of fixed plate is fixed with first support column, hollow structure's second support column has been cup jointed in the other end activity of first support column, the one end that first support column stretches into the second support column is fixed with the slide, be fixed with the first spring that is located first support column outer lane outside between the top of slide and the inner wall of second support column, be fixed with the second spring between the bottom of slide and the bottom inner wall of second support column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514239.5U CN210738876U (en) | 2019-09-12 | 2019-09-12 | Centrifugal fan with noise reduction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514239.5U CN210738876U (en) | 2019-09-12 | 2019-09-12 | Centrifugal fan with noise reduction function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210738876U true CN210738876U (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921514239.5U Expired - Fee Related CN210738876U (en) | 2019-09-12 | 2019-09-12 | Centrifugal fan with noise reduction function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210738876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671274A (en) * | 2021-10-22 | 2021-11-19 | 江苏浦丹光电技术有限公司 | High-sensitivity differential electric field sensor |
-
2019
- 2019-09-12 CN CN201921514239.5U patent/CN210738876U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671274A (en) * | 2021-10-22 | 2021-11-19 | 江苏浦丹光电技术有限公司 | High-sensitivity differential electric field sensor |
| CN113671274B (en) * | 2021-10-22 | 2021-12-28 | 江苏浦丹光电技术有限公司 | High-sensitivity differential electric field sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 Termination date: 20210912 |
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| CF01 | Termination of patent right due to non-payment of annual fee |