CN202690475U - Blade perforated type bladeless fan turbo device - Google Patents
Blade perforated type bladeless fan turbo device Download PDFInfo
- Publication number
- CN202690475U CN202690475U CN 201220233287 CN201220233287U CN202690475U CN 202690475 U CN202690475 U CN 202690475U CN 201220233287 CN201220233287 CN 201220233287 CN 201220233287 U CN201220233287 U CN 201220233287U CN 202690475 U CN202690475 U CN 202690475U
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- fixing frame
- blade
- motor
- cover
- perforated
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Abstract
The utility model discloses a blade perforated type bladeless fan turbo device. Under the conditions of high speed and low load, the conventional fan has a prominent noise problem. The blade perforated type bladeless fan turbo device comprises a motor fixing support, a motor, a hub and perforated blades, wherein a rotation shaft of the motor penetrates through a motor trough and a small fixing support ring in sequence to be connected with the hub; the perforated blades are arranged on the outer side of the hub along the circumference at equal intervals and are swept-curved blades; two rows of round holes are formed in the rear edge of each blade, wherein four round holes are formed in the row closest to the rear edge of each blade, and three round holes are formed in the other row; the round holes are distributed in the area of which the pressure of the pressure side of each turbo blade is high and the pressure of the suction side is low; and the diameter D of each round hole and the distance L between the two adjacent round holes are in the range of 0.5 to 1.2mm. By the blade perforated type turbo device of the bladeless fan, the pneumatic performance of the bladeless fan is improved, and the defects of instability of rising force pulsation of the turbo blades and increased pneumatic noise are overcome.
Description
Technical field
The utility model belongs to the fan technical field, relates in particular to a kind of blade punched-type without the blade fan turbine device.
Background technique
Traditional fan is that blade directly is installed on motor mostly at present, simultaneously for safety, also protective equipment can be installed at the exhaust outlet place.But this set still has potential safety hazard.And fan air-supply direction and air quantity can and change along with the flabellum rotation, allow the human feeling to impacting the discomfort of bringing.
In order to address this is that, people have designed a kind of without blade fan, and it is comprised of the base of lower end and the air outlet ring of upper end.Do not have blade although it intuitively gets on, scrutinize and find that a turbine is arranged in base, air-flow is sucked from the outside by turbine just, blows out from air outlet ring through turbosupercharging.The noise of turbine blade can be divided into discrete noise and broadband noise from the angle of noise frequency.Discrete noise is relevant with the rotation of impeller, and in high speed, low-load situation, this noise is particularly outstanding especially; Eddy current crack is that the various separation eddies during by air current flow produce.
The control of noise is generally considered from three angles: the first is set about from the noise reduction sound source; It two is to set about from the propagation path of noise, utilizes silencing apparatus or sound arrester noise reduction; It three is to set about from the noise recipient, and it is protected.Facts have proved, the air power noise that turbine blade produces is large greater than whole mechanical noise without blade fan and electromagnetic noise far away, if can be by improving inlets and putlets of ventilation and the blade structure without blade fan, noise reduction significantly, and the noise reduction of trying every possible means from the blade aspect has very large research and application prospect.
Current is to reduce the method that noise generally adopts in the blade perforation, because often appearring in the blade exit place, separates in eddy current, and adopt the blade method for punching can make the part air-flow flow to the blade low pressure surface from the blade high pressure surface, can impel the blade separation point mobile to the below of flowing, its mechanism is equal to the boundary layer blowing.Reduced like this separation zone in blade exit cross section, separation zone strength of vortex and size reduce, and noise also reduces thereupon.
Therefore, based on above-mentioned description, in the urgent need to designing a kind of turbine without blade fan, by turbine blade is carried out architecture advances, improve aeroperformance without blade fan integral body with this, reduce the impact that the unstability of turbine blade climbing power pulsation and aerodynamic noise increase etc. bring.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of blade punched-type without the blade fan turbine device, overcomes the unstability of turbine blade climbing power pulsation and the shortcoming that aerodynamic noise increases.
The utility model comprises motor fixing frame, motor, wheel hub, perforated vanes, and the running shaft of motor runs through successively motor slot, fixing frame small circle ring and wheel hub inboard and is connected, and perforated vanes is along circumferentially equidistantly being installed in the wheel hub outside.
Described motor fixing frame comprises motor slot, fixing frame wall cover, fixing frame cover, fixing frame small circle ring, and motor slot is cylindrical shape, and an end is open, and the other end sealing and closed end center have through hole, and it is inboard that closed end is fixed in the fixing frame cover; Fixing frame wall cover one end is connected with the bottom of fixing frame cover; The fixing frame small circle ring is fixed on fixing frame cover top;
Described fixing frame wall cover is cylindrical shape, and both ends open, has a plurality of through holes on its sidewall, helps motor radiating;
The sectional area of described fixing frame cover is frustoconic shape, both ends open;
Described perforated vanes is the curved blade profile of plunderring, trailing edge has two row's circular holes, it is 4 from that nearest row's circular hole quantity of trailing edge wherein, another row's circular hole quantity is 3, the distributed areas of circular hole are positioned at the zone that turbine blade pressure side pressure is higher and suction surface pressure is lower, and the span of the distance L between the diameter D of circular hole and adjacent two circular holes is 0.5～1.2mm.
Fixing frame wall cover in the described motor fixing frame is connected with the pedestal inboard, and whole the utility model turbine device is arranged on base interior, and the pedestal upper end is connected with air outlet ring;
Described pedestal is cylindrical shape, and the upper end is open, lower end closed; The cavity of pedestal lower end circumferentially has a ring through hole, and this ring through hole is as intake grill.
Described air outlet ring is ring, and air outlet ring circumferentially has a slit, and this slit is as exhaust outlet.
The utility model beneficial effect is as follows:
The utility model can make the eddy current separation point of outlet area mobile downstream, weakens turbulence intensity, improves thereby make without blade fan turbine pneumatic performance, overcomes the unstability of turbine blade climbing power pulsation, the shortcoming that aerodynamic noise increases.
Description of drawings
Fig. 1 is the utility model without the position view in the blade fan;
Fig. 2 is the utility model apparatus structure schematic diagram;
Fig. 3 is the motor fixing frame schematic diagram;
Fig. 4 is turbine perforated vanes schematic diagram;
Among the figure, motor fixing frame 1, motor 2, wheel hub 3, perforated vanes 4, pedestal 5,, air outlet ring 6, motor slot 7, fixing frame large circle 8, fixing frame cover 9, fixing frame small circle ring 10.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 2, the blade punched-type is without the blade fan turbine device, comprise motor fixing frame 1, motor 2, wheel hub 3, perforated vanes 4, the running shaft of motor 2 runs through motor slot 7 successively, fixing frame small circle ring 10 is connected with wheel hub 3, and perforated vanes 4 is along circumferentially equidistantly being installed in wheel hub 3 outsides.
As shown in Figure 3, motor fixing frame 1 comprises motor slot 7, fixing frame wall cover 8, fixing frame cover 9, fixing frame small circle ring 10, and motor slot 7 is cylindrical shape, and an end is open, and the other end sealing and closed end center have through hole, and closed end is fixed in fixing frame cover 9 inboards; Fixing frame wall cover 8 one ends are connected with the bottom of fixing frame cover 9; Fixing frame small circle ring 10 is fixed on fixing frame cover 9 tops;
Described fixing frame wall cover 8 is cylindrical shape, and both ends open, has a plurality of through holes on its sidewall, helps motor radiating;
The sectional area of described fixing frame cover 9 is frustoconic shape, both ends open;
Shown in Figure 4, perforated vanes 4 is the curved blade profile of plunderring, perforated vanes 4 is along circumferentially being installed on wheel hub 3 outsides, trailing edge has two row's circular holes, it is 4 from that nearest row's circular hole quantity of trailing edge wherein, another row's circular hole quantity is 3, and the distributed areas of circular hole are positioned at the zone that turbine blade pressure side pressure is higher and suction surface pressure is lower, and the span of the distance L between the diameter D of circular hole and adjacent two circular holes is 0.5～1.2mm.
Such as Fig. 1, shown in Figure 3, the fixing frame wall cover 8 in the motor fixing frame 1 is connected with pedestal 5 inboards, and whole the utility model turbine device be arranged on base interior, and pedestal 5 upper ends are connected with air outlet ring 6;
Described pedestal 5 is cylindrical shape, and the upper end is open, lower end closed; The cavity of pedestal 5 lower ends circumferentially has a ring through hole, and this ring through hole is as intake grill.
Described air outlet ring 6 is ring, and air outlet ring 6 circumferentially has a slit, and this slit is as exhaust outlet;
The utility model device working procedure is as follows:
As shown in Figure 1, when motor 2 starts, the utility model turbine device begins rotation, air-flow is entered by the intake grill without blade fan pedestal 5, after outside air-flow sucked base interior, via the supercharging of the utility model turbine device, air-flow upwards flowed, be admitted to the air outlet ring 6 that is positioned at without above the blade fan, wind blows out from the exhaust outlet on the air outlet ring 6 is stable.Turbine blade without blade fan in this process can produce unstability because of the climbing power pulsation, also can produce aerodynamic noise simultaneously, have through hole on the blade in the utility model turbine device, can reduce the unstability of blade climbing power pulsation, overcome the impact that aerodynamic noise brings, improved to a certain extent the aeroperformance without blade fan.
Those skilled in the art should be understood that can carry out various improvement and change to this invention in the situation that do not break away from summary of the invention.Therefore according to technical spirit of the present utility model, simple modification and various similar changes and improvements to the utility model is done all should belong within the utility model technical scope.
Claims (1)
1. the blade punched-type comprises motor fixing frame, motor, wheel hub, perforated vanes without the blade fan turbine device, it is characterized in that:
The running shaft of motor runs through successively motor slot, fixing frame small circle ring and wheel hub inboard and is connected, and perforated vanes is along circumferentially equidistantly being installed in the wheel hub outside;
Described motor fixing frame comprises motor slot, fixing frame wall cover, fixing frame cover, fixing frame small circle ring; Motor slot is cylindrical shape, and an end is open, and the other end sealing and closed end center have through hole, and it is inboard that closed end is fixed in the fixing frame cover; Fixing frame wall cover one end is connected with the bottom of fixing frame cover; The fixing frame small circle ring is fixed on fixing frame cover top;
Described fixing frame wall cover is cylindrical shape, and both ends open, has a plurality of through holes on its sidewall, helps motor radiating;
The sectional area of described fixing frame cover is frustoconic shape, both ends open;
Described perforated vanes is the curved blade profile of plunderring, trailing edge has two row's circular holes, it is 4 from that nearest row's circular hole quantity of trailing edge wherein, another row's circular hole quantity is 3, the distributed areas of circular hole are positioned at the zone that turbine blade pressure side pressure is higher and suction surface pressure is lower, and the span of the distance L between the diameter D of circular hole and adjacent two circular holes is 0.5～1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233287 CN202690475U (en) | 2012-05-23 | 2012-05-23 | Blade perforated type bladeless fan turbo device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233287 CN202690475U (en) | 2012-05-23 | 2012-05-23 | Blade perforated type bladeless fan turbo device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690475U true CN202690475U (en) | 2013-01-23 |
Family
ID=47546101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220233287 Expired - Fee Related CN202690475U (en) | 2012-05-23 | 2012-05-23 | Blade perforated type bladeless fan turbo device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690475U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678586A (en) * | 2012-05-23 | 2012-09-19 | 浙江理工大学 | Blade perforation type bladeless fan turbine device |
| CN103291655A (en) * | 2013-06-24 | 2013-09-11 | 浙江理工大学 | Bladeless fan turbine device with splitter blades |
| CN110513328A (en) * | 2019-08-30 | 2019-11-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal wind wheel, centrifugal blower and range hood |
-
2012
- 2012-05-23 CN CN 201220233287 patent/CN202690475U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678586A (en) * | 2012-05-23 | 2012-09-19 | 浙江理工大学 | Blade perforation type bladeless fan turbine device |
| CN103291655A (en) * | 2013-06-24 | 2013-09-11 | 浙江理工大学 | Bladeless fan turbine device with splitter blades |
| CN110513328A (en) * | 2019-08-30 | 2019-11-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal wind wheel, centrifugal blower and range hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20150523 |
|
| EXPY | Termination of patent right or utility model |