CN208634103U - A kind of centrifugal blower volute reducing aerodynamic noise by ribs - Google Patents
A kind of centrifugal blower volute reducing aerodynamic noise by ribs Download PDFInfo
- Publication number
- CN208634103U CN208634103U CN201821318806.5U CN201821318806U CN208634103U CN 208634103 U CN208634103 U CN 208634103U CN 201821318806 U CN201821318806 U CN 201821318806U CN 208634103 U CN208634103 U CN 208634103U
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- China
- Prior art keywords
- volute
- centrifugal blower
- aerodynamic noise
- rib
- volute body
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Abstract
It is a kind of by ribs reduce aerodynamic noise centrifugal blower volute belong to machinery manufacturing technology field, and in particular to it is a kind of by variable height shunt rib reduce aerodynamic noise centrifugal blower volute.The utility model provides a kind of centrifugal blower volute that rib reduction aerodynamic noise is shunted by variable height.The utility model includes volute body, it is characterized by: the sliding slot that two sides are provided with interlaced arrangement and extend along volute body direction of rotation up and down in volute body air outlet, movable shunting rib is provided in sliding slot, the shunting rib is connected with the height adjuster on volute body.
Description
Technical field
The utility model belongs to machinery manufacturing technology field, and in particular to a kind of to shunt rib reduction pneumatically by variable height
The centrifugal blower volute of noise.
Background technique
Centrifugal blower is a kind of typical fluid machinery, is widely used in the fields such as ventilation, heat dissipation, drying.With to from
The raising that heart fan performance requires, the directions such as centrifugal blower is big to pressure coefficient, working efficiency is high are developed.Centrifugal blower is to rely on
The mechanical energy of input improves gas pressure and supplies gas side by side the machinery of body, it is a kind of driven fluid machinery.Centrifugal blower is extensive
Ventilation, dust discharge and cooling for factory, mine, tunnel, cooling tower, vehicle, ship and building；Boiler and industrial furnace
Ventilation and air inducing；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；It the drying of cereal and selects and recommends；Pneumatic wind regime
Inflation and propulsion with aircushion vehicle etc..
The high revolving speed of centrifugal blower also increases noise while improving efficiency, and then influences equipment dependability and use
Comfort level, the noise for reducing centrifugal blower is a current research emphasis.The noise of usual centrifugal blower include aerodynamic noise,
Mechanical noise and structural vibration radiated noise etc..The eddy current crack for discrete rotational noise and broadband is cashed on noise spectrum
Superposition, wherein aerodynamic noise occupies the major part of fan noise, thus the aerodynamic noise for controlling blower becomes control noise
Primary element.Therefore, it is always urgently to be resolved to develop a kind of centrifugal blower volute by shunting rib reduction aerodynamic noise
New issue.
Summary of the invention
The purpose of this utility model is to provide a kind of centrifugal blowers that rib reduction aerodynamic noise is shunted by variable height
Spiral case.
To achieve the above object, the utility model uses following technical scheme, and the utility model includes volute body, feature
It is: the sliding slot that two sides are provided with interlaced arrangement and extend along volute body direction of rotation up and down in volute body air outlet, sliding slot
It is inside provided with movable shunting rib, the shunting rib is connected with the height adjuster on volute body.
As a kind of preferred embodiment of the utility model, the height adjuster includes the drive for being set to spiral case body side surface
Motivation structure, two sides are provided with telescopic arm to driving mechanism up and down, and two telescopic arms are located at spiral case with shunting rib respectively by connection frame
Part connection outside body.
Further, the driving mechanism includes shell, is provided with decelerating motor in shell, the output shaft of decelerating motor with
One transmission gear is connected, and the two sides of transmission gear are provided with rack gear, and two telescopic arms are connected with two rack gears respectively.
As another preferred embodiment of the utility model, the sliding slot and shunting rib extend along volute body direction of rotation
90 ° of circular arc is long, and the center of circle of circular arc and the center of circle of volute body are consistent.
As the third preferred embodiment of the utility model, the shell inner surface is provided with sound-absorbing material layer.
As the 4th kind of preferred embodiment of the utility model, it is in volute body that the shunting rib, which is located at the intracorporal height of spiral case,
The 1%~49% of chamber total height；The quantity for shunting rib is 1~99.
The utility model has the beneficial effects that the utility model with it is existing it is fixed shunt rib control technology compared with, can basis
The operating status of centrifugal blower reasonably adjusts the height for shunting rib, aerodynamic noise can be more effectively reduced, furthermore in volute body
The sound-absorbing material on surface can further decrease aerodynamic noise while to spiral case and shunting rib structure clearance seal, using this hair
The aerodynamic noise of bright spiral case can be greatly lowered, and can be widely used in machinery manufacturing technology field.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the main view of the utility model.
Fig. 3 is the driving structure schematic diagram of height adjuster.
In attached drawing 1 be volute body, 2 be shunt rib, 3 be connection frame, 4 be height adjuster, 5 be telescopic arm, 6 be tooth
Item, 7 be transmission gear, 8 be decelerating motor.
Specific embodiment
The utility model includes volute body 1, it is characterised in that: two sides are provided with staggeredly up and down in 1 air outlet of volute body
It arranges and is provided with movable shunting rib 2, the shunting rib 2 and snail along the sliding slot that 1 direction of rotation of volute body extends, sliding slot
Height adjuster 4 on shell 1 is connected.
As a kind of preferred embodiment of the utility model, the height adjuster 4 includes being set to 1 side of volute body
Driving mechanism, driving mechanism are provided with telescopic arm 5 in two sides up and down, two telescopic arms 5 by connection frame 3 respectively with shunt 2, rib
Part connection outside volute body 1.
Further, the driving mechanism includes shell, and decelerating motor 8, the output shaft of decelerating motor 8 are provided in shell
It is connected with a transmission gear 7, the two sides of transmission gear 7 are provided with rack gear 6, and two telescopic arms 5 are connected with two rack gears 6 respectively.
As another preferred embodiment of the utility model, the sliding slot and shunting rib 2 extend along 1 direction of rotation of volute body
90 ° of circular arc is long, and the center of circle of circular arc is consistent with the center of circle of volute body 1.
As the third preferred embodiment of the utility model, the shell inner surface is provided with sound-absorbing material layer.
As the 4th kind of preferred embodiment of the utility model, it is volute body that the shunting rib 2, which is located at the height in volute body 1,
The 1%~49% of 1 inner cavity total height；The quantity for shunting rib 2 is 1~99.
Claims (6)
1. a kind of centrifugal blower volute for reducing aerodynamic noise by ribs, including volute body (1), it is characterised in that: spiral case
Two sides are provided with interlaced arrangement and along the sliding slots of volute body (1) direction of rotation extension, sliding slot up and down in body (1) air outlet
It is provided with movable shunting rib (2), shunting rib (2) is connected with the height adjuster (4) on volute body (1).
2. a kind of centrifugal blower volute for reducing aerodynamic noise by ribs according to claim 1, it is characterised in that:
The height adjuster (4) includes the driving mechanism for being set to volute body (1) side, and driving mechanism is provided with two sides up and down
Telescopic arm (5), two telescopic arms (5) are located at the external part of volute body (1) by connection frame (3) with shunting rib (2) respectively and connect.
3. a kind of centrifugal blower volute for reducing aerodynamic noise by ribs according to claim 2, it is characterised in that:
The driving mechanism includes shell, is provided in shell decelerating motor (8), the output shaft and a transmission gear of decelerating motor (8)
(7) it is connected, the two sides of transmission gear (7) are provided with rack gear (6), and two telescopic arms (5) are connected with two rack gears (6) respectively.
4. a kind of centrifugal blower volute for reducing aerodynamic noise by ribs according to claim 1, it is characterised in that:
The sliding slot and shunting rib (2) are long along the circular arc of volute body (1) direction of rotation extension (90) °, the center of circle and volute body (1) of circular arc
The center of circle it is consistent.
5. a kind of centrifugal blower volute for reducing aerodynamic noise by ribs according to claim 1, it is characterised in that:
The shell inner surface is provided with sound-absorbing material layer.
6. a kind of centrifugal blower volute for reducing aerodynamic noise by ribs according to claim 1, it is characterised in that:
Described shunt rib (2) are located at the height in volute body (1) for the 1%~49% of volute body (1) inner cavity total height；It shunts rib (2)
Quantity be 1~99.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821318806.5U CN208634103U (en) | 2018-08-16 | 2018-08-16 | A kind of centrifugal blower volute reducing aerodynamic noise by ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821318806.5U CN208634103U (en) | 2018-08-16 | 2018-08-16 | A kind of centrifugal blower volute reducing aerodynamic noise by ribs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634103U true CN208634103U (en) | 2019-03-22 |
Family
ID=65743131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821318806.5U Expired - Fee Related CN208634103U (en) | 2018-08-16 | 2018-08-16 | A kind of centrifugal blower volute reducing aerodynamic noise by ribs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634103U (en) |
-
2018
- 2018-08-16 CN CN201821318806.5U patent/CN208634103U/en not_active Expired - Fee Related
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Legal Events
| 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: 20190322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |