CN104791296A - Structure of centrifugal fan impeller - Google Patents
Structure of centrifugal fan impeller Download PDFInfo
- Publication number
- CN104791296A CN104791296A CN201510016705.7A CN201510016705A CN104791296A CN 104791296 A CN104791296 A CN 104791296A CN 201510016705 A CN201510016705 A CN 201510016705A CN 104791296 A CN104791296 A CN 104791296A
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- game
- mid
- centrifugal fan
- ring blade
- fan impeller
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of impeller, and discloses a structure of a centrifugal fan impeller. The structure of the centrifugal fan impeller is provided with a front ring (1) and a rear ring (2). Outer-ring blades (3) are fixed between the front ring (1) and the rear ring (2), and a central disk (4) is further arranged between the front ring (1) and the rear ring (2). A wheel disk used for the installation of a motor is arranged at the central position of the central disk (4). The outer-ring blades (3) penetrate through a blade inserting groove at the outer edge of the central disk (4) and are fixed together with the central disk (4). The structure of the centrifugal fan impeller is characterized in that inner-ring blades (6) distributed in the radial direction of the central disk (4) are distributed on the central disk (4). The structure of the centrifugal fan impeller is provided with two layers of blades, preposed prewhirl can be generated in the inner-ring blades before air flow entering an outer-layer passageway, acting is conducted on the airflow entering the inside of the fan through the inner-ring blades, the speed and static pressure of the airflow at an inlet can be improved, and thereby the performance of the whole fan is improved.
Description
Technical field
The invention belongs to the technical field of impeller, specifically a kind of centrifugal fan impeller structure.
Background technique
Impeller great majority now commercially used are single impellers, this kind of impeller is all open at one end single side air inlet when rotating, when adopting single impeller, in order to the standard making air quantity and noise all reach country, the diameter of usual this kind of impeller is all larger, to produce larger single side air inlet, when being applied to less space, the inner spaces such as such as range hood, the outside dimensions of range hood can be caused to increase, not only affect outward appearance, and waste material, cost is higher.
And, centrifugal multiblade draught fan impeller traditional at present all generally only has one deck blade, to be that blade is shorter be uniformly distributed along impeller outer edge leaf characteristic, due to the existence of centrifugal blower snail tongue, in addition the nonsymmetry of centrifugal blower air-flow in the running, air-flow is not be uniformly distributed at the pressure of circumference of impeller and speed; And because the diameter of centrifugal multiblade draught fan impeller is larger than generally, air-flow is being changed in the process of radial outlet after axially entering impeller, the usefulness of whole lamina length is not brought into play completely, low at the effectiveness comparison of the one section of blade enclosed before and after impeller, in addition gap is provided with between the air intake slip ring before and after impeller and impeller, there is leakage loss, therefore have important impact the streaming of one section of region at impeller two ends with the performance of eddy current on blower fan.
In order to improve above-mentioned situation, the patent No. is the range hood that the Chinese utility model patent of ZL200620175742.9 discloses a kind of improvement, two impellers are docking together by this model utility, the impeller blade of two impeller circles is staggered arrangement, formed double-faced ventilated during rotation, while air output and noise meet NBS, reduce the volume of impeller and the size of air duct of range hood, bilobed wheel only needs a motor to drive, and reduce further the power consumption of range hood.
But two impellers dock by above-mentioned patent, first will make two independent impellers, and then impeller sets be combined, processing technology is complicated, and cost is high, and manufacturing efficiency is low.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, provides a kind of easy to process, and cost is low, can promote the speed of inlet air flow and the centrifugal fan impeller structure of static pressure.
The present invention solves the problems of the technologies described above adopted technological scheme:
A kind of centrifugal fan impeller structure, it has front and rear ring, outer ring blade is fixed with between described front and rear ring, also mid-game is provided with between described front and rear ring, described mid-game central position is provided with the wheel disc for mounted motor, described outer ring blade passes the blade slot of described mid-game outer and is fixed together with described mid-game, it is characterized in that: described mid-game is distributed with along the radially-arranged inner ring blade of mid-game.
As improvement, described mid-game is peviform and encloses direction opening backwards, it comprises outer ring for connecting the outer of outer ring blade, bottom for installing the bottom surface of wheel disc and the inclined-plane being connected bottom surface and outer, and described inner ring blade is evenly distributed on inclined-plane towards on the side of front circle.
Improve, described inner ring blade is curved again, is swirling distribution along mid-game.
The height of described inner ring blade is less than or equal to the height of outer ring blade.
Described mid-game also can be planar, and described inner ring blade is then uniformly distributed along mid-game radial direction in swirling.
As preferably, the cross section of described outer ring blade is arc, and radius is 12cm ~ 18cm, cornerite 70 ~ 110 degree.
Preferably, the quantitative range of inner ring blade is 4 ~ 24, and the quantitative range of outer ring blade is 48 ~ 72.
Compared with prior art, the invention has the advantages that: bamboo product one group of inner ring blade in the mid-game inside impeller, before such air-flow enters outer runner, preposition prewhirling can be produced in advance at inner ring blade, by inner ring blade to the acting entering blower interior air-flow, speed and the static pressure of inlet air flow can be promoted, thus promote the performance of whole blower fan, impeller of the present invention is for the centrifugal blower in range hood simultaneously, because centrifugal blower is except providing the negative pressure of absorption soot gas, the effect of important grease separation also can be played to oil smoke, therefore, twi-tier blade can carry out twice centrifugation to the oil smoke flowed through, and then put forward the filter capacity having grown liquid towards oil particles thing.
Accompanying drawing explanation
Fig. 1 is the perspective view of the embodiment of the present invention one;
Fig. 2 is the plan view of the embodiment of the present invention one;
Fig. 3 is the perspective view of mid-game in the embodiment of the present invention one;
Fig. 4 is the perspective view of the embodiment of the present invention two;
Fig. 5 is the perspective view of mid-game in the embodiment of the present invention two.
Embodiment
Embodiment one
As depicted in figs. 1 and 2, for the centrifugal fan impeller structure in the embodiment of the present invention one, it has front circle 1 and rear circle 2, is fixed with 60 blades 3 between front circle 1 and rear circle 2, outer ring blade 3 and front circle 1 and enclose 2 afterwards and be all fixed together with existing conventional riveting method.Also be provided with mid-game 4 between front circle 1 and rear circle 2, mid-game 4 central position is fixed with the wheel disc 5 for mounted motor by rivet.Mid-game 4 outer offers the blade slot 42a corresponding with blade, blade 3 through mid-game 4 blade slot and make blade 3 stuck in blade slot by the distortion of blade slot, thus realize the fixing of blade 3 and mid-game 4.The distortion of blade slot makes mid-game 4 outer ring radial force by roll extrusion and realizes.The cross section of outer ring blade 3 is arc, and radius is between 12cm ~ 18cm, between cornerite 70 ~ 110 degree.
Above-mentioned mid-game 4 is peviform and encloses 2 direction openings backwards, it comprises outer ring for connecting the outer 42 of blade 3, bottom is for installing the bottom surface 41 of wheel disc 5 and being connected the inclined-plane 43 of bottom surface 41 and outer 42, and the center of bottom surface 41 has the through hole that the central module of wheel disc 5 can be allowed to pass, shown in Figure 3.
Inclined-plane 43 be evenly distributed with on the side of front circle 1 along the distribution in swirling of inclined-plane 43 radial direction, inner ring blade 6 that cross section is curved, the height of inner ring blade 6 is lower than the height of outer ring blade, and circle 1 before being no more than, and the quantity of inner ring blade 6 is 4 ~ 24.
Because the present invention devises again one group and the diverse inner ring blade of outer ring blade inside impeller, it is low inside and high outside, can before air-flow enters outer runner, produce preposition prewhirling, by inner blade to the acting entering blower interior air-flow, speed and the static pressure of inlet air flow can be promoted, thus promote the performance of whole blower fan.The present invention is simultaneously mainly used for the centrifugal blower in range hood, because centrifugal blower is except providing the negative pressure of absorption soot gas, the effect of important grease separation also can be played to oil smoke, therefore, twi-tier blade can carry out twice centrifugation to the oil smoke flowed through, and then puies forward the filter capacity having grown liquid towards oil particles thing.
Embodiment two
With embodiment one unlike, mid-game 4 in planar, described inner ring blade 6 is uniformly distributed in swirling in the radial direction of mid-game.Shown in Fig. 4,5.
Claims (7)
1. a centrifugal fan impeller structure, it has front circle (1) and rear circle (2), outer ring blade (3) is fixed with between described front circle (1) and rear circle (2), mid-game (4) is also provided with between described front circle (1) and rear circle (2), described mid-game (4) central position is provided with the wheel disc (5) for mounted motor, described outer ring blade (3) through described mid-game (4) outer blade slot and be fixed together with described mid-game (4), it is characterized in that: described mid-game is distributed with along the radially-arranged inner ring blade (6) of mid-game (4).
2. centrifugal fan impeller structure according to claim 1, it is characterized in that: described mid-game (4) in peviform and backwards encloses (2) direction opening, it comprises outer ring for connecting the outer (42) of outer ring blade (3), bottom for installing the bottom surface (41) of wheel disc (5) and being connected the inclined-plane (43) of bottom surface (41) and outer (42), and described inner ring blade (6) is evenly distributed on inclined-plane (42) towards on the side of front circle.
3. centrifugal fan impeller structure according to claim 2, is characterized in that: described inner ring blade (6) is curved, and the inclined-plane (43) along mid-game distributes in swirling.
4. centrifugal fan impeller structure according to claim 3, is characterized in that: the height of described inner ring blade (6) is less than or equal to the height of outer ring blade (3).
5. centrifugal fan impeller structure according to claim 1, is characterized in that: described mid-game (4) is in planar, and described inner ring blade (6) is uniformly distributed in swirling in mid-game.
6. according to the centrifugal fan impeller structure in Claims 1 to 5 described in any one claim, it is characterized in that: the cross section of described outer ring blade (3) is arc, and radius is 12cm ~ 18cm, cornerite 70 ~ 110 degree.
7. centrifugal fan impeller structure according to claim 1, is characterized in that: the quantitative range of inner ring blade is 4 ~ 24, and the quantitative range of outer ring blade is 48 ~ 72.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016705.7A CN104791296A (en) | 2015-01-13 | 2015-01-13 | Structure of centrifugal fan impeller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016705.7A CN104791296A (en) | 2015-01-13 | 2015-01-13 | Structure of centrifugal fan impeller |
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| CN104791296A true CN104791296A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510016705.7A Pending CN104791296A (en) | 2015-01-13 | 2015-01-13 | Structure of centrifugal fan impeller |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465042A (en) * | 2015-12-28 | 2016-04-06 | 褚玉斌 | Double-blade wind wheel |
| CN107165859A (en) * | 2017-04-28 | 2017-09-15 | 广东威灵电机制造有限公司 | Movable vane wheel, blower fan system and electric tool |
| CN108180521A (en) * | 2018-01-29 | 2018-06-19 | 美的集团股份有限公司 | Fume extractor |
| CN108944237A (en) * | 2018-07-03 | 2018-12-07 | 惠州市维多利科技有限公司 | A kind of craftwork is struck method |
| CN109026829A (en) * | 2018-10-24 | 2018-12-18 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
| CN109253110A (en) * | 2017-07-14 | 2019-01-22 | 日本电产株式会社 | Impeller, air supply device and dust catcher |
| CN110594191A (en) * | 2019-10-09 | 2019-12-20 | 伦登风机科技(天津)有限公司 | High-pressure and large-flow double-layer centrifugal fan impeller structure |
| CN111255739A (en) * | 2018-11-30 | 2020-06-09 | 三星电子株式会社 | Double-suction fan and air conditioner with same |
| CN114776630A (en) * | 2022-06-17 | 2022-07-22 | 杭州老板电器股份有限公司 | Double-side air inlet fan for range hood and range hood |
| CN114941636A (en) * | 2022-06-28 | 2022-08-26 | 华中科技大学 | Preposed supercharging multi-wing centrifugal impeller and centrifugal fan |
| CN115492792A (en) * | 2021-06-18 | 2022-12-20 | 广州华凌制冷设备有限公司 | Centrifugal wind wheel, centrifugal fan and air conditioner |
Citations (4)
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| CN201925227U (en) * | 2011-01-21 | 2011-08-10 | 宁波方太厨具有限公司 | Impeller with central disc structure |
| CN203670271U (en) * | 2013-11-30 | 2014-06-25 | 宁波方太厨具有限公司 | Impeller of centrifugal fan |
| CN203685679U (en) * | 2014-01-23 | 2014-07-02 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
| CN204511965U (en) * | 2015-01-13 | 2015-07-29 | 宁波方太厨具有限公司 | A kind of centrifugal fan impeller structure |
-
2015
- 2015-01-13 CN CN201510016705.7A patent/CN104791296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201925227U (en) * | 2011-01-21 | 2011-08-10 | 宁波方太厨具有限公司 | Impeller with central disc structure |
| CN203670271U (en) * | 2013-11-30 | 2014-06-25 | 宁波方太厨具有限公司 | Impeller of centrifugal fan |
| CN203685679U (en) * | 2014-01-23 | 2014-07-02 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
| CN204511965U (en) * | 2015-01-13 | 2015-07-29 | 宁波方太厨具有限公司 | A kind of centrifugal fan impeller structure |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465042A (en) * | 2015-12-28 | 2016-04-06 | 褚玉斌 | Double-blade wind wheel |
| CN107165859A (en) * | 2017-04-28 | 2017-09-15 | 广东威灵电机制造有限公司 | Movable vane wheel, blower fan system and electric tool |
| CN109253110A (en) * | 2017-07-14 | 2019-01-22 | 日本电产株式会社 | Impeller, air supply device and dust catcher |
| CN108180521A (en) * | 2018-01-29 | 2018-06-19 | 美的集团股份有限公司 | Fume extractor |
| CN108944237A (en) * | 2018-07-03 | 2018-12-07 | 惠州市维多利科技有限公司 | A kind of craftwork is struck method |
| CN109026829A (en) * | 2018-10-24 | 2018-12-18 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and air conditioner |
| CN111255739B (en) * | 2018-11-30 | 2022-07-15 | 三星电子株式会社 | Double-suction fan and air conditioner with same |
| CN111255739A (en) * | 2018-11-30 | 2020-06-09 | 三星电子株式会社 | Double-suction fan and air conditioner with same |
| US11525455B2 (en) * | 2018-11-30 | 2022-12-13 | Samsung Electronics Co., Ltd. | Double suction fan and air conditioner having the same |
| CN110594191B (en) * | 2019-10-09 | 2021-09-14 | 伦登风机科技(天津)有限公司 | High-pressure and large-flow double-layer centrifugal fan impeller structure |
| CN110594191A (en) * | 2019-10-09 | 2019-12-20 | 伦登风机科技(天津)有限公司 | High-pressure and large-flow double-layer centrifugal fan impeller structure |
| CN115492792A (en) * | 2021-06-18 | 2022-12-20 | 广州华凌制冷设备有限公司 | Centrifugal wind wheel, centrifugal fan and air conditioner |
| CN114776630A (en) * | 2022-06-17 | 2022-07-22 | 杭州老板电器股份有限公司 | Double-side air inlet fan for range hood and range hood |
| CN114941636A (en) * | 2022-06-28 | 2022-08-26 | 华中科技大学 | Preposed supercharging multi-wing centrifugal impeller and centrifugal fan |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150722 |