CN202493497U - Interior pressure diffusion structure of no-shell fan - Google Patents
Interior pressure diffusion structure of no-shell fan Download PDFInfo
- Publication number
- CN202493497U CN202493497U CN2012201004078U CN201220100407U CN202493497U CN 202493497 U CN202493497 U CN 202493497U CN 2012201004078 U CN2012201004078 U CN 2012201004078U CN 201220100407 U CN201220100407 U CN 201220100407U CN 202493497 U CN202493497 U CN 202493497U
- Authority
- CN
- China
- Prior art keywords
- diffuser
- hub disk
- blower fan
- shroud
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009792 diffusion process Methods 0.000 title claims abstract description 33
- 230000000694 effects Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an interior pressure diffusion structure of a no-shell fan, belonging to the technical field of fluid engineering. The interior pressure diffusion structure of the no-shell fan is mainly composed of a diffuser front disk, a diffuser front disk fixing plate, a diffuser rear disk and a diffuser rear disk fixing plate, wherein diffuser front disk and the diffuser rear disk are mounted at the place where an outlet of impellers inside the no-shell fan locates; the diffuser front disk and the diffuser rear disk constitute an annular pressure diffusion air channel with a gradually enlarged outlet section; one side of the front disk fixing plate is fixedly connected with the diffuser front disk while the other side thereof is fixedly connected with a motor bracket of the no-shell fan; and one side of the rear disk fixing plate is fixedly connected with the diffuser rear disk while the other side thereof is fixedly connected with a motor and the motor bracket of the no-shell fan. The interior pressure diffusion structure of a no-shell fan, disclosed by the utility model, has the advantages of being capable of improving fan efficiency, reducing working noise of the fan and realizing the energy-saving effect as the fan efficiency can be improved efficiently.
Description
Technical field
The utility model belongs to the fluid engineering technical field, is specifically related to a kind of no shell centrifugal blower.
Background technique
No shell blower fan is made up of safety check, slip ring, impeller, motor, foreign side's cover and noise elimination cotton etc. at present, is widely used in various Infrastructure, equipment and the industrial installation, mainly plays effects such as ventilation, heat radiation; No shell blower fan does not have outside spiral case, and not only the ventilation and heat performance is good, also has the low advantage of cost of production; But owing to there is not spiral case, down, the air-flow behind the impeller outlet lacks flow guide device in working order; The outlet sudden enlargement, the pressure loss is bigger, and the efficient of therefore not having the shell blower fan is generally lower; And cover inside, side is easy to generate a large amount of vortexs, and noise is bigger.
Summary of the invention
The utility model provides a kind of inner diffusion structure of no shell blower fan that can improve fan efficiency and reduce the blower fan operating noise to the deficiency of above-mentioned existing technology.
It is that this structure mainly is made up of Diffuser shroud, Diffuser shroud fixed plate, Diffuser hub disk and Diffuser hub disk fixed plate that the utility model solves the technological scheme that its technical problem adopted; Its Diffuser shroud and Diffuser hub disk are installed in no shell blower fan internal impeller outlet port, and Diffuser shroud and Diffuser hub disk constitute the annular diffusion air channel that the outlet constantly enlarges; Shroud fixed plate one side is fixedly connected with the Diffuser shroud, and another side is fixedly connected with the electric machine support of no shell blower fan; Hub disk fixed plate one side is fixedly connected with the Diffuser hub disk, and another side is fixedly connected with the motor and the electric machine support of no shell blower fan.
Said Diffuser shroud and Diffuser hub disk and do not have between the shell blower fan internal impeller and leave the gap, gap length is the 0.5%-1% of impeller outer diameter.
Said Diffuser shroud is provided with the first diffusion wall, and the Diffuser hub disk is provided with the second diffusion wall; The said first diffusion wall and the second diffusion wall all are hydraulically smooth surfaces.
Said Diffuser hub disk edge has circular fold, has certain inclination angle between circular fold and the Diffuser hub disk, and the inclination angle size is 0 to spend between 45 degree.
Said fixed connection is to be threaded or to rivet or weld.
The beneficial effect that the utility model technological scheme is brought:
(1) the present technique scheme can reduce the dynamic pressure of impeller outlet air-flow effectively, improves the interior flow field of no shell blower fan, reduces the generation of vortex and the collision of air-flow.
(2) minimizing of eddy airstream has reduced unhelpful energy loss on the one hand, has also reduced the pneumatic noise of blower fan on the other hand.
(3) Diffuser shroud and Diffuser hub disk constitute the annular diffusion air channel that the outlet enlarges gradually; Air-flow is through realizing in the diffusion runner behind the impeller outlet that dynamic pressure transforms to static pressure effectively; Reduce the energy loss in the conversion process, promoted the static pressure and the total head of blower fan outlet, can effectively promote fan efficiency; And then the reduction operation energy consumption, reach energy-conservation effect.
Description of drawings
Fig. 1 is the axle side perspective diagram of the utility model;
Fig. 2 is the axle sectional view of the utility model;
Fig. 3 is the floor map of Diffuser shroud;
Fig. 4 is the A-A cross-sectional view of Fig. 3;
Fig. 5 is the floor map of Diffuser shroud fixed plate;
Fig. 6 is the A-A cross-sectional view of Fig. 5;
Fig. 7 is the floor map of Diffuser hub disk;
Fig. 8 is the A-A cross-sectional view of Fig. 7;
Fig. 9 is the floor map of Diffuser hub disk fixed plate;
The A-A cross-sectional view of Figure 10 Fig. 9;
Figure 11 is the scheme of installation of Diffuser shroud and Diffuser hub disk.
Wherein: 1 foreign side cover, 2 impellers, 3 slip rings, 4 motors, 5 electric machine supports, 6 Diffuser shrouds, 7 Diffuser shroud fixed plates, 8 Diffuser hub disks, 9 Diffuser hub disk fixed plates, the 6-1 first diffusion wall, the 8-1 second diffusion wall, 8-2, circular fold.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done and to be further described:
The no shell blower fan schematic representation with inner diffusion structure of the utility model is as depicted in figs. 1 and 2, comprises foreign side's cover 1, impeller 2, slip ring 3, motor 4, electric machine support 5, Diffuser shroud 6, Diffuser shroud fixed plate 7, Diffuser hub disk 8 and Diffuser hub disk fixed plate 9.Motor 4 is fixed on the electric machine support 5; Shroud fixed plate 7 one sides are fixedly connected with Diffuser shroud 6, and another side is fixedly connected with electric machine support 5, and Diffuser shroud 6 is fixed on the electric machine support 5; Hub disk fixed plate 9 one sides are fixedly connected with Diffuser hub disk 8, and another side is fixedly connected with motor 4 and electric machine support 5, and Diffuser hub disk 8 is fixed on motor 4 and the electric machine support 5.
The schematic representation of Diffuser shroud 6 such as Fig. 3, shown in Figure 4 in the utility model, in order to reduce the surface friction drag of air-flow at the first diffusion wall 6-1 place, the first diffusion wall 6-1 is a hydraulically smooth surface.
The schematic representation of shroud fixed plate 7 such as Fig. 5, shown in Figure 6 in the utility model, the physical dimension of fixed plate 7 can design according to the as installed needs.
The schematic representation of Diffuser hub disk 8 such as Fig. 7, shown in Figure 8 in the utility model, Diffuser hub disk 8 edges have circular fold 8-2, have certain inclination angle theta between circular fold 8-2 and the Diffuser hub disk 8 according to actual needs; To accelerate the rate of expansion of runner; But the value of θ is unsuitable excessive, otherwise can influence the diffusion effect, and the value of suggestion θ is no more than 45 degree; In order to reduce the surface friction drag of air-flow at the second diffusion wall 8-1 place, the second diffusion wall 8-1 is a hydraulically smooth surface.
The schematic representation of hub disk fixed plate 9 such as Fig. 9, shown in Figure 10 in the utility model, the physical dimension of fixed plate 9 can design according to the as installed needs.
The scheme of installation of Diffuser is shown in figure 11 in the utility model; Because impeller 2 is rotatable parts, Diffuser shroud 6 is stationary elements with hub disk 8, in order to guarantee safe operation; Should leave certain interval between Diffuser shroud 6 and Diffuser hub disk 8 and the impeller 2 during installation; But the gap is also unsuitable excessive, otherwise can influence the diffusion effect, and the size in suggestion gap is the 0.5%-1% of impeller 2 external diameters.
Claims (5)
1. inner diffusion structure of no shell blower fan; It is characterized in that this structure mainly is made up of Diffuser shroud, Diffuser shroud fixed plate, Diffuser hub disk and Diffuser hub disk fixed plate; Its Diffuser shroud and Diffuser hub disk are installed in no shell blower fan internal impeller outlet port, and Diffuser shroud and Diffuser hub disk constitute the annular diffusion air channel that the outlet constantly enlarges; Shroud fixed plate one side is fixedly connected with the Diffuser shroud, and another side is fixedly connected with the electric machine support of no shell blower fan; Hub disk fixed plate one side is fixedly connected with the Diffuser hub disk, and another side is fixedly connected with the motor and the electric machine support of no shell blower fan.
2. the inner diffusion structure of no shell blower fan according to claim 1 is characterized in that Diffuser shroud and Diffuser hub disk and does not have between the shell blower fan internal impeller and leave the gap that gap length is the 0.5%-1% of impeller outer diameter.
3. the inner diffusion structure of no shell blower fan according to claim 1 is characterized in that the Diffuser shroud is provided with the first diffusion wall, and the Diffuser hub disk is provided with the second diffusion wall; The said first diffusion wall and the second diffusion wall all are hydraulically smooth surfaces.
4. the inner diffusion structure of no shell blower fan according to claim 1 is characterized in that Diffuser hub disk edge has circular fold, has certain inclination angle between circular fold and the Diffuser hub disk, the inclination angle size be 0 spend spend to 45 between.
5. the inner diffusion structure of no shell blower fan according to claim 1 is characterized in that described fixed connection is to be threaded or to rivet or weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201004078U CN202493497U (en) | 2012-03-17 | 2012-03-17 | Interior pressure diffusion structure of no-shell fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201004078U CN202493497U (en) | 2012-03-17 | 2012-03-17 | Interior pressure diffusion structure of no-shell fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493497U true CN202493497U (en) | 2012-10-17 |
Family
ID=46999730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201004078U Expired - Lifetime CN202493497U (en) | 2012-03-17 | 2012-03-17 | Interior pressure diffusion structure of no-shell fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493497U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334959A (en) * | 2013-07-18 | 2013-10-02 | 南通大通宝富风机有限公司 | Welding straight flow passage diffusion reflux device |
| CN109931289A (en) * | 2019-03-29 | 2019-06-25 | 上海理工大学 | A kind of vaneless diffuser of Voluteless fan |
-
2012
- 2012-03-17 CN CN2012201004078U patent/CN202493497U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334959A (en) * | 2013-07-18 | 2013-10-02 | 南通大通宝富风机有限公司 | Welding straight flow passage diffusion reflux device |
| CN109931289A (en) * | 2019-03-29 | 2019-06-25 | 上海理工大学 | A kind of vaneless diffuser of Voluteless fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105156346A (en) | Axial centrifugal fan | |
| CN201679745U (en) | Low noise air conditioning cooling axial flow fan | |
| CN203335470U (en) | High-efficiency centrifugal fan without volute | |
| CN203516203U (en) | Centrifugal fan volute, centrifugal fan and road sweeper | |
| CN105298877A (en) | Centrifugal axial flow fan | |
| JP3204521U (en) | fan | |
| CN101963157A (en) | High total pressure large-flow wheel disk side beveling type back-ward impeller fan | |
| CN201771867U (en) | Air guide device | |
| CN202100530U (en) | Flow guide structure at inner part of shell-less fan | |
| CN106368983A (en) | High-efficiency low-noise pearly nautilus bionic fan | |
| CN103486081A (en) | Axial flow fan blade, fan and air conditioner outdoor unit | |
| CN102312848B (en) | Efficient multi-air outlet energy-saving anti-explosion fan | |
| CN208294810U (en) | A kind of motor train traction cooling blower | |
| CN217029343U (en) | High-efficient axial fan for vehicle | |
| CN212155198U (en) | Centrifugal fan | |
| CN201386671Y (en) | Axial flow type induction fan | |
| CN205047474U (en) | Axial centrifugal fan | |
| CN206419268U (en) | One kind energy-conservation hypsokinesis wind wheel | |
| CN202732463U (en) | Centrifugal fan sealing system | |
| CN102168689B (en) | Flow guiding structure in inner part of volute-free fan | |
| CN209908803U (en) | Backward centrifugal fan with flow guide device | |
| CN205243888U (en) | Centrifugal axis STREAMING fan | |
| CN202048031U (en) | Sweepforward-type axial-flow ventilator for locomotive converter | |
| CN201953717U (en) | Cooling ventilator for traction motor of engineering maintenance vehicle | |
| CN202707534U (en) | Front curve type ventilator for electric locomotive composite cooler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
|
| CX01 | Expiry of patent term |