CN102168689B - Flow guiding structure in inner part of volute-free fan - Google Patents
Flow guiding structure in inner part of volute-free fan Download PDFInfo
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- CN102168689B CN102168689B CN 201110133999 CN201110133999A CN102168689B CN 102168689 B CN102168689 B CN 102168689B CN 201110133999 CN201110133999 CN 201110133999 CN 201110133999 A CN201110133999 A CN 201110133999A CN 102168689 B CN102168689 B CN 102168689B
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- water conservancy
- conservancy diversion
- outlet
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- outside plate
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Abstract
The invention discloses a flow guiding structure in the inner part of a volute-free fan. The structure comprises an outer square shade, an impellor, a fixed board, a flow collector, a flow guiding inner plate an a flow guiding outer plate; the outlet of the impellor at the inner part of the volute-free fan is provided with an arc flow guiding inner plate and a flow guiding outer plate; and the flow guiding inner plate and the flow guiding outer plate form an arc flow guiding air duct the outlet cross section of which expands continuously. According to the invention, on one hand, the flow field at the inner part of the volute-free fan can be improved effectively, the radial air flow behind the impellor outlet is guided to the axial direction, and the energy loss and noise brought about by vortex is reduced; and on the other hand, the effective conversion of motive pressure and static pressure is realized in the diverging flow guiding air duct behind the impellor outlet, the total pressure and static pressure of the fan outlet are improved, and the fan efficiency can be improved effectively.
Description
Technical field:
The present invention relates to a kind of without the shell centrifugal blower, relate in particular to a kind of with the arc flow guide structure without the shell centrifugal blower, be applicable to air-conditioning unit blowing unit, belong to the fluid engineering technical field.
Background technique:
Usually formed by safety check, slip ring, centrifugal impeller, motor, foreign side's cover and the cotton of eliminating the noise etc. without the shell blower fan, owing to there not being spiral case, lower in working order, air-flow lacks flow guide device behind impeller outlet, the outlet sudden enlargement, the pressure loss is larger, and air distribution is disorderly in foreign side's cover, easily produces at foreign side cover interior corners place to have a large amount of vortexs, and noise is larger, and cause energy loss, therefore generally lower without the shell fan efficiency.
Summary of the invention:
The present invention is intended to address the above problem, provide a kind of can make reducing noise and improve fan efficiency without shell blower fan flow guide structure, and simple in structure, easy to manufacture, easy for installation.
In order to reach above-mentioned goal of the invention, technological scheme of the present invention is:
A kind of without shell blower fan flow guide structure at inner part, comprise foreign side's cover, impeller, fixed plate, slip ring, water conservancy diversion inner panel and water conservancy diversion outside plate, described without shell blower fan internal impeller outlet port installation arc water conservancy diversion inner panel and water conservancy diversion outside plate, water conservancy diversion inner panel and water conservancy diversion outside plate consist of the arc diversion air duct that the outlet constantly enlarges.
Described fixed plate one side is fixedly connected with the water conservancy diversion inner panel, and another side is fixedly connected with motor and electrode suppor; Fixed plate is fixed to the water conservancy diversion inner panel on motor and the electrode suppor.
Described water conservancy diversion outside plate covers inwall with foreign side and is fixedly connected with; Described water conservancy diversion outside plate leaves groove, this groove and electric machine support clamping.
Leave the gap between described impeller and water conservancy diversion inner panel and the water conservancy diversion outside plate, gap length is 0.5%～1% times impeller outer diameter.
Be provided with the first water conservancy diversion wall on the described water conservancy diversion inner panel, be provided with the second water conservancy diversion wall on the water conservancy diversion outside plate; Described the first water conservancy diversion wall and the second water conservancy diversion wall all are hydraulically smooth surfaces.
Described water conservancy diversion outside plate one end extends to axially to outlet from impeller shroud outer, and the other end covers inwall with foreign side and is fixedly connected with.
Described water conservancy diversion inner panel one end extends to axially to outlet from impeller hub disk outer, outlet end and water conservancy diversion outside plate outlet end radially aligned.
Described being fixedly connected with is to be threaded or to weld.Described water conservancy diversion inner panel and water conservancy diversion inner panel all are arc deflectors.
The beneficial effect that technical solution of the present invention is brought:
(1) the technical program can be improved the interior flow field without the shell blower fan effectively, and the radial air flow behind the impeller outlet is guided to axially, avoids air-flow to produce vortex in cover inwall corner of foreign side.
(2) minimizing of eddy airstream has reduced unhelpful energy loss on the one hand, has also reduced on the other hand the pneumatic noise of blower fan.
(3) water conservancy diversion outside plate and water conservancy diversion inner panel have consisted of the diversion air duct of outlet flaring, air-flow is through realizing in diversion air duct behind the impeller outlet that dynamic pressure transforms to static pressure effectively, reduced the energy loss in the conversion process, static pressure and the total head of fan outlet have been promoted, can effectively promote fan efficiency, and then the reduction operation energy consumption, reach energy-conservation effect.
Description of drawings:
Fig. 1 is axle side perspective diagram of the present invention;
Fig. 2 is axle sectional view of the present invention;
Fig. 3 is floor map and the sectional view of water conservancy diversion outside plate; Wherein Fig. 3 a is the floor map of water conservancy diversion outside plate, and Fig. 3 b is the sectional view of water conservancy diversion outside plate;
Fig. 4 is floor map and the sectional view of water conservancy diversion inner panel; Wherein Fig. 4 a is the floor map of water conservancy diversion inner panel, and Fig. 4 b is the sectional view of water conservancy diversion outside plate;
Fig. 5 is floor map and the sectional view of fixed plate; Wherein Fig. 5 a is the floor map of fixed plate, and Fig. 5 b is the sectional view of fixed plate;
Fig. 6 is the scheme of installation of water conservancy diversion inner panel and water conservancy diversion outside plate;
Wherein: 1 is foreign side's cover; 2 is impeller; 3 is fixed plate; 4 is slip ring; 5 is the water conservancy diversion inner panel; 6 is the water conservancy diversion outside plate; 7 is motor; 8 is electrode suppor; 51 is the first water conservancy diversion wall; 61 is groove; 62 is the second water conservancy diversion wall.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
Below in conjunction with accompanying drawing technological scheme of the present invention is further described.
Of the present invention with flow guide structure without shell blower fan schematic diagram as shown in Figure 1, comprise foreign side cover 1, impeller 2, fixed plate 3, slip ring 4, water conservancy diversion inner panel 5, water conservancy diversion outside plate 6, motor 7, electrode suppor 8.Motor 7 is fixed on the electric machine support 8; Fixed plate 3 one sides are fixedly connected with water conservancy diversion inner panel 5, and another side is fixedly connected with motor 7 and electrode suppor 8, and water conservancy diversion inner panel 5 is fixed on motor 7 and the electrode suppor 8; Water conservancy diversion outside plate 6 covers 1 inwall with foreign side and is fixedly connected with.
Among the present invention the schematic diagram of water conservancy diversion outside plate 6 as shown in Figure 2, water conservancy diversion outside plate 6 leaves groove 61, so as when to install can with electric machine support 8 clampings; In order to reduce air-flow at the surface friction drag at the second water conservancy diversion wall place, the second water conservancy diversion wall is hydraulically smooth surface.
Among the present invention the schematic diagram of water conservancy diversion inner panel 5 as shown in Figure 3, same in order to reduce air-flow at the surface friction drag at water conservancy diversion wall 51 places, water conservancy diversion wall 51 is hydraulically smooth surface.
Among the present invention the schematic diagram of fixed plate 3 as shown in Figure 4, the thickness of fixed plate 3 can design according to the as installed needs.
The scheme of installation of guide plate as shown in Figure 5 among the present invention, because impeller 2 is rotatable parts, guide plate 5 and 6 is stationary elements, in order to guarantee safe operation, should leave certain interval between guide plate and the impeller 2 during installation, but the gap is also unsuitable excessive, otherwise can affect the water conservancy diversion effect, big or small desirable 0.5%～1% times impeller 2 external diameters in suggestion gap.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of submitting to.
Claims (7)
1. one kind without shell blower fan flow guide structure at inner part, comprises foreign side's cover, impeller, fixed plate, slip ring, water conservancy diversion inner panel and water conservancy diversion outside plate, it is characterized in that, described water conservancy diversion outside plate is fixedly connected with foreign side cover inwall; Describedly without shell blower fan internal impeller outlet port arc water conservancy diversion inner panel and water conservancy diversion outside plate are installed, the radial air flow behind the impeller outlet is guided to axially, leave the gap between described impeller and water conservancy diversion inner panel and the water conservancy diversion outside plate, gap length is 0.5%～1% times impeller outer diameter; Water conservancy diversion inner panel and water conservancy diversion outside plate consist of the arc diversion air duct that the outlet constantly enlarges, and air-flow is through realizing in diversion air duct behind the impeller outlet that dynamic pressure transforms to static pressure.
2. according to claim 1 without shell blower fan flow guide structure at inner part, it is characterized in that: described fixed plate one side is fixedly connected with the water conservancy diversion inner panel, and another side is fixedly connected with motor and electric machine support; Fixed plate is fixed to the water conservancy diversion inner panel on motor and the electric machine support.
3. according to claim 1 without shell blower fan flow guide structure at inner part, it is characterized in that: described water conservancy diversion outside plate leaves groove, this groove and electric machine support clamping.
4. according to claim 1 without shell blower fan flow guide structure at inner part, it is characterized in that: be provided with the first water conservancy diversion wall on the described water conservancy diversion inner panel, be provided with the second water conservancy diversion wall on the water conservancy diversion outside plate; Described the first water conservancy diversion wall and the second water conservancy diversion wall all are hydraulically smooth surfaces.
5. according to claim 1 without shell blower fan flow guide structure at inner part, it is characterized in that: described water conservancy diversion outside plate one end extends to axially to outlet from impeller shroud outer, and the other end covers inwall with foreign side and is fixedly connected with.
6. according to claim 1 without shell blower fan flow guide structure at inner part, it is characterized in that: described water conservancy diversion inner panel one end extends to axially to outlet from impeller hub disk outer, outlet end and water conservancy diversion outside plate outlet end radially aligned.
7. according to claim 1 without shell blower fan flow guide structure at inner part, it is characterized in that: described water conservancy diversion inner panel and water conservancy diversion inner panel all are arc deflectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110133999 CN102168689B (en) | 2011-05-24 | 2011-05-24 | Flow guiding structure in inner part of volute-free fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110133999 CN102168689B (en) | 2011-05-24 | 2011-05-24 | Flow guiding structure in inner part of volute-free fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102168689A CN102168689A (en) | 2011-08-31 |
| CN102168689B true CN102168689B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110133999 Active CN102168689B (en) | 2011-05-24 | 2011-05-24 | Flow guiding structure in inner part of volute-free fan |
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| Country | Link |
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| CN (1) | CN102168689B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106407508A (en) * | 2016-08-29 | 2017-02-15 | 厦门美时美克空气净化有限公司 | Calculation method of single-fan double-outlet air flue of air purifier and structure of single-fan double-outlet air flue |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU539164A1 (en) * | 1974-07-12 | 1976-12-15 | Институт Горной Механики И Технической Кибернетики Им.М.И.Федорова | Centrifugal fan casing |
| SU976133A1 (en) * | 1981-05-29 | 1982-11-23 | Харьковский Ордена Ленина Авиационный Институт Им.Н.Е.Жуковского | Centrifugal fan |
| CN2437888Y (en) * | 2000-07-11 | 2001-07-04 | 北京新安特玻璃钢设备有限公司 | Centrifugal cylindric fan |
| CN2487901Y (en) * | 2001-05-21 | 2002-04-24 | 卜维平 | Closed inclined flow vane cylinder fan |
| KR20030020502A (en) * | 2001-08-29 | 2003-03-10 | 엘지전자 주식회사 | a centrifugal fan |
| CN201448259U (en) * | 2009-09-04 | 2010-05-05 | 江阴市宏达风机有限公司 | Shellless centrifugal drying fan |
| CN202100530U (en) * | 2011-05-24 | 2012-01-04 | 西安交通大学 | Flow guide structure at inner part of shell-less fan |
-
2011
- 2011-05-24 CN CN 201110133999 patent/CN102168689B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU539164A1 (en) * | 1974-07-12 | 1976-12-15 | Институт Горной Механики И Технической Кибернетики Им.М.И.Федорова | Centrifugal fan casing |
| SU976133A1 (en) * | 1981-05-29 | 1982-11-23 | Харьковский Ордена Ленина Авиационный Институт Им.Н.Е.Жуковского | Centrifugal fan |
| CN2437888Y (en) * | 2000-07-11 | 2001-07-04 | 北京新安特玻璃钢设备有限公司 | Centrifugal cylindric fan |
| CN2487901Y (en) * | 2001-05-21 | 2002-04-24 | 卜维平 | Closed inclined flow vane cylinder fan |
| KR20030020502A (en) * | 2001-08-29 | 2003-03-10 | 엘지전자 주식회사 | a centrifugal fan |
| CN201448259U (en) * | 2009-09-04 | 2010-05-05 | 江阴市宏达风机有限公司 | Shellless centrifugal drying fan |
| CN202100530U (en) * | 2011-05-24 | 2012-01-04 | 西安交通大学 | Flow guide structure at inner part of shell-less fan |
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| Publication number | Publication date |
|---|---|
| CN102168689A (en) | 2011-08-31 |
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Effective date of registration: 20160427 Address after: 253000 Shandong province Dezhou City Tianqu Industrial Park Greider group technology center chief engineer Greider Road No. 6. Patentee after: Shandong Grad Group Co., Ltd. Patentee after: Xi'an Jiaotong University Address before: 710049 Xianning West Road, Shaanxi, China, No. 28, No. Patentee before: Xi'an Jiaotong University |