CN102996509A - Centrifugal blower - Google Patents
Centrifugal blower Download PDFInfo
- Publication number
- CN102996509A CN102996509A CN2012103743276A CN201210374327A CN102996509A CN 102996509 A CN102996509 A CN 102996509A CN 2012103743276 A CN2012103743276 A CN 2012103743276A CN 201210374327 A CN201210374327 A CN 201210374327A CN 102996509 A CN102996509 A CN 102996509A
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- blade
- wind wheel
- centrifugal blower
- outward edge
- motor
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- Wind Motors (AREA)
Abstract
The invention provides a centrifugal blower which comprises a motor and a wind wheel, wherein the wind wheel is mounted on an outer rotor of the motor. The wind wheel includes an upper cover and a lower cover, wherein a plurality of blades are arranged between the upper cover and the lower cover; a vent hole is formed in the upper cover; the outer edge of each blade is shaped like a sawtooth; and the thickness of the middle part of each blade is greater than that of the outer edge and the inner edge of the blade. With the adoption of the structure provided in the invention, the centrifugal blower is higher in efficiency and lower in noise.
Description
Technical field:
The present invention relates to the aeration technology field, specifically is a kind of centrifugal blower that is used on the ventilation equipment.
Background technique:
Centrifugal blower generally comprises the parts such as wind wheel, motor and shell, and motor is connected with wind wheel, drives wind wheel and rotates, centrifugal blower is the principle that is converted to potential energy according to kinetic energy, utilize the wind wheel of High Rotation Speed that gas is accelerated, then slow down, change the flow direction, make kinetic energy convert potential energy (pressure) to.In the centrifugal blower, gas is from axially entering wind wheel, and air-flow is changed into radially through wind wheel, flows out from the outside of wind wheel.
Blade in the centrifugal blower of the prior art on the wind wheel generally is to adopt the iron plate of even thickness to make, and is generally level and smooth straight line or curvilinear structures.Adopt this structure, because the even thickness of blade, so the flow of air-out is less, efficient is lower, and since front edge, rear edge and the outward edge of blade be streamlined, therefore when wind during from the rear edge outflow of blade, the contact length of wind and blade is shorter, and noise is larger.
Summary of the invention:
The objective of the invention is, overcome existing technological deficiency, the centrifugal blower that a kind of efficient is higher and noise is less is provided.
Technological scheme provided by the invention is: the invention provides a kind of centrifugal blower, it comprises motor and wind wheel, described wind wheel is contained on the external rotor of motor, described wind wheel comprises loam cake and lower cover, be provided with a plurality of blades between loam cake and the lower cover, on cover the hole that is provided with ventilation, the outward edge of described each blade is zigzag fashion, the thickness of the intermediate portion of described each blade all thickness than the outward edge of this blade and inward flange is large.
The outward edge of described each blade is the outward edge that zigzag fashion refers to described each blade and is equipped with several continuous triangular hills.
Adopt said structure, the present invention has the following advantages:
The present invention adopts this structure, and the centre of blade is thicker than the both sides of blade, and the sectional shape of blade is the sectional shape of similar wing, is conducive to increase the air pressure on the forward and backward two sides of blade, thereby can significantly increase the flow of outlet air surface, and efficient is higher.And the rear edge of blade is designed to profile of tooth, when blade rotation, wind flows out from the rear edge of blade, can increase effective contact length of blade and wind, thereby can reduce noise.
Description of drawings:
Accompanying drawing 1 is the side structure schematic representation of centrifugal blower of the present invention;
Accompanying drawing 2 is the structural representation of facing in the centrifugal blower of the present invention;
As shown in the figure: 1, motor, 2, blade, 2.1, outward edge, 2.2, inward flange, 3, loam cake, 4, lower cover.
Embodiment:
Below in conjunction with the drawings and specific embodiments the present invention is elaborated:
Such as Fig. 1, shown in Figure 2: as to the invention provides a kind of centrifugal blower, it comprises motor 1 and wind wheel, described wind wheel is contained on the external rotor of motor 1, the centre of wind wheel 2 is provided with mounting hole in the present embodiment, and press fit over by interference fit on the external rotor of motor 1, wind wheel rotates along with the rotation of external rotor, described wind wheel comprises loam cake 3 and lower cover 4, be provided with a plurality of blades 2 between loam cake 3 and the lower cover 4, loam cake 3 is provided with the hole of ventilation, gas sucks the hole from loam cake 3, and the outward edge 2.1 of described each blade 2 is zigzag fashion, and the thickness of the intermediate portion of described each blade 2 all thickness than the outward edge 2.1 of this blade 2 and inward flange 2.2 is large.
The outward edge 2.1 of described each blade 2 is the outward edge 2.1 that zigzag fashion refers to described each blade 2 and is equipped with several continuous triangular hills.
Because the front and back of blade 2 all needs to be designed to streamlined.Therefore, the structure that adopts in the present embodiment is that the cross section in the front of blade 2 is arc, the cross section at blade 2 back sides also is arc, the diameter of the arc in the cross section in blade 2 fronts is larger than the diameter of the arc in the cross section at blade 2 back sides, the front of blade 2 is the pressure side of blade 2, and the back side of blade 2 is the suction surface of blade 2.Adopt this structural design, all the thickness than the outward edge 2.1 of this blade 2 and rear edge 2.2 is large can to make the thickness of intermediate portion of blade 2.The outward edge 2.1 of blade 2 namely is one side of blade 2 air-out, and the outward edge of blade 2 namely is one side of blade 2 air draughts.
Claims (2)
1. centrifugal blower, it comprises motor (1) and wind wheel, described wind wheel is contained on the external rotor of motor (1), described wind wheel comprises loam cake (3) and lower cover (4), be provided with a plurality of blades (2) between loam cake (3) and the lower cover (4), loam cake (3) is provided with the hole of ventilation, it is characterized in that: the outward edge (2.1) of described each blade (2) is zigzag fashion, and the thickness of the intermediate portion of described each blade (2) all thickness than the outward edge (2.1) of this blade and inward flange (2.2) is large.
2. centrifugal blower according to claim 1 is characterized in that: the outward edge (2.1) of described each blade (2) is the outward edge (2.1) that zigzag fashion refers to described each blade (2) and is equipped with several continuous triangular hills.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103743276A CN102996509A (en) | 2012-09-27 | 2012-09-27 | Centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103743276A CN102996509A (en) | 2012-09-27 | 2012-09-27 | Centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102996509A true CN102996509A (en) | 2013-03-27 |
Family
ID=47925490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103743276A Pending CN102996509A (en) | 2012-09-27 | 2012-09-27 | Centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996509A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033420A (en) * | 2014-05-30 | 2014-09-10 | 苏州市金翔钛设备有限公司 | Centrifugal fan impeller |
| CN104454637A (en) * | 2014-11-13 | 2015-03-25 | 中国北车集团大连机车研究所有限公司 | Low-noise centrifugal fan impeller for high-speed electric multiple unit cooling system |
| CN104564805A (en) * | 2013-10-29 | 2015-04-29 | 海尔集团公司 | Fan blade structure of centrifugal draught fan, centrifugal draught fan and embedded air conditioner inner unit |
| CN105020175A (en) * | 2015-08-20 | 2015-11-04 | 莱克电气股份有限公司 | Rotor impeller and motor with same |
| CN112594915A (en) * | 2020-11-17 | 2021-04-02 | 珠海格力电器股份有限公司 | Angle type wall-mounted air conditioner and noise reduction structure thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2546280A1 (en) * | 1975-10-16 | 1977-04-21 | Kodak Ag | Centrifugal fan impeller with blades parallel to axis - has blade edges with sawtooth serrations arranged in comb fashion |
| EP0942175A1 (en) * | 1997-09-30 | 1999-09-15 | Daikin Industries, Limited | Centrifugal blower, method of manufacturing the same, and air-conditioner provided with the same |
| EP1277966A2 (en) * | 2001-07-18 | 2003-01-22 | General Electric Company | Serrated fan blade |
| CN201747672U (en) * | 2010-06-21 | 2011-02-16 | 珠海格力电器股份有限公司 | Centrifugal wind wheel |
| CN102619783A (en) * | 2012-04-18 | 2012-08-01 | 广东志高空调有限公司 | Blade structure for centrifugal fans |
-
2012
- 2012-09-27 CN CN2012103743276A patent/CN102996509A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2546280A1 (en) * | 1975-10-16 | 1977-04-21 | Kodak Ag | Centrifugal fan impeller with blades parallel to axis - has blade edges with sawtooth serrations arranged in comb fashion |
| EP0942175A1 (en) * | 1997-09-30 | 1999-09-15 | Daikin Industries, Limited | Centrifugal blower, method of manufacturing the same, and air-conditioner provided with the same |
| EP1277966A2 (en) * | 2001-07-18 | 2003-01-22 | General Electric Company | Serrated fan blade |
| CN201747672U (en) * | 2010-06-21 | 2011-02-16 | 珠海格力电器股份有限公司 | Centrifugal wind wheel |
| CN102619783A (en) * | 2012-04-18 | 2012-08-01 | 广东志高空调有限公司 | Blade structure for centrifugal fans |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564805A (en) * | 2013-10-29 | 2015-04-29 | 海尔集团公司 | Fan blade structure of centrifugal draught fan, centrifugal draught fan and embedded air conditioner inner unit |
| CN104564805B (en) * | 2013-10-29 | 2017-11-10 | 海尔集团公司 | Machine in a kind of blade structure of centrifugal blower, centrifugal blower and embedded type air conditioner |
| CN104033420A (en) * | 2014-05-30 | 2014-09-10 | 苏州市金翔钛设备有限公司 | Centrifugal fan impeller |
| CN104454637A (en) * | 2014-11-13 | 2015-03-25 | 中国北车集团大连机车研究所有限公司 | Low-noise centrifugal fan impeller for high-speed electric multiple unit cooling system |
| CN105020175A (en) * | 2015-08-20 | 2015-11-04 | 莱克电气股份有限公司 | Rotor impeller and motor with same |
| CN112594915A (en) * | 2020-11-17 | 2021-04-02 | 珠海格力电器股份有限公司 | Angle type wall-mounted air conditioner and noise reduction structure thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130327 |