CN201636081U - Backward-tilting type volute-free centrifugal fan - Google Patents
Backward-tilting type volute-free centrifugal fan Download PDFInfo
- Publication number
- CN201636081U CN201636081U CN2010201386567U CN201020138656U CN201636081U CN 201636081 U CN201636081 U CN 201636081U CN 2010201386567 U CN2010201386567 U CN 2010201386567U CN 201020138656 U CN201020138656 U CN 201020138656U CN 201636081 U CN201636081 U CN 201636081U
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Abstract
The utility model discloses a backward-tilting type volute-free centrifugal fan comprising a casing, an impeller arranged in the casing and a horn port connected with the impeller, wherein the impeller comprises a front disk, a rear disk, blades fixed on the rear plate and a hub connected with the rear disk; a main shaft connected with a motor passes through the hub and is fixed on the casing through a bearing; and twelve blades are in an airfoil shape and are uniformly distributed and fixed on the rear disk. The utility model has the advantages of high efficiency, low energy consumption, high rotating speed and low noise.
Description
Technical field
The utility model relates to a kind of BI does not have the volute centrifugal blower.
Background technique
Present stage, no volute blower fan is quite extensive in the utilization of air-conditioning box industry on the market, it is easy for installation, space hold is few, low-cost, and can improve the laminar flow rate to 96% of air-flow in the air-conditioning box, make the advantages such as heat exchange efficiency raising of heat exchanger in the air-conditioning box, make it become the following optimal selection that substitutes two air intake centrifugal blower fans.But no volute blower fan in the market, as shown in Figure 1, impeller 2 is the steel impeller, and be the hypsokinesis prismatic blade, so exist problems such as Heavy Weight, rotator inertia is big, energy consumption is big, efficient is low, the quantity of blade is 9, reaching under the situation of same air quantity, rotating speed height, noise are big; Problems such as air intake horn mouth 4 is that the compacting and the degree of depth are little, and the air intake friction factor is big, turbulence scale is high, energy consumption is big, shorten air-flow rectification distance so exist, and causes the turbulence scale height, and energy consumption is big; The frame structure of this blower fan adopts bolt to connect, and structural strength is poor.
The model utility content
In order to solve the problems referred to above that prior art exists, the utility model proposes a kind of BI does not have the volute centrifugal blower, and it adopts the blade of 12 aluminium matter airfoils, and efficient height, energy consumption are low, and noise is little.
The utility model can be achieved by the following technical programs:
A kind of BI does not have the volute centrifugal blower, comprise housing, impeller, the horn mouth that is connected with impeller, described impeller comprises shroud, hub disk, is fixed on the blade on the hub disk, and be connected wheel hub on the hub disk, the main shaft that is connected with motor pass wheel hub by bearing fixing on housing, described blade is an airfoil, and has 12, and evenly distributing is fixed on the described hub disk.
Blade described in the utility model, hub disk and shroud are integrally welded; Described impeller adopts aluminum-magnesium alloy material; Described housing is integrally welded structure.
Because adopt above technological scheme, a kind of BI of the present utility model does not have the volute centrifugal blower, blade increases to 12 blades by 9 original blades, so under same rotating speed, the air quantity that is absorbed increases, so rotating speed step-down when reaching the situation of same air quantity; And adopt the shape of airfoil, after air enters impeller inside, because blade convexity projection, when air flow stream is crossed the highest top of blade, be accelerated, and slow down the principle unanimity that its principle is lifted after sliding at a high speed with aircraft wing at blade abdomen arc place, make wind by impeller and be squeezed out in the process of impeller, provide a part of power to promoting the impeller rotation, made the speed kinetic energy rejection of air change into thrust, institute is so that this impeller energy consumption is low, efficient is high; The impeller material adopts the aluminum-magnesium alloy material of the special proportioning of high strength, has realized reduction impeller overall weight, reaches the reduction rotary inertia, thus the purpose that cuts down the consumption of energy; Simultaneously, because blade and shroud and hub disk are the alloy welding, have realized a same high-strength characteristic of its steel plate materials, guaranteed that impeller can reach the above rotating speed of 3000RPM, make the blower fan can reach the highest static pressure 2800PA, solved the problem that aluminium impeller in the past can not be realized high rotating speed and high static pressure.
Description of drawings
Fig. 1 is a kind of overall structure schematic representation that does not have the spiral case blower fan of the utility model;
Fig. 2 is the side-looking structural representation that a kind of BI of the utility model does not have the volute centrifugal blower;
Fig. 3 is the structural representation of impeller in the utility model;
Fig. 4 is the side-looking structural representation of impeller in the utility model;
Fig. 5 is the structural representation of blade in the utility model.
1 housing among the figure; 2 bearings; 3 main shafts; 4 impellers; 5 horn mouths; 6 blades; 7 shrouds; 8 hub disks; 9 wheel hubs.
Embodiment
Below in conjunction with embodiment, further set forth the utility model:
As shown in Figure 1, a kind of BI does not have the volute centrifugal blower, comprise housing 1, impeller 4, the horn mouth 5 that is connected with impeller 4, impeller 4 comprises shroud 7, hub disk 8, is fixed on the blade 6 on the hub disk 8, and be connected wheel hub 9 on the hub disk 8, and the main shaft 3 that is connected with motor passes wheel hub 9 and is fixed on the housing 1 by bearing 2, and blade 6 is an airfoil, and have 12, evenly distributing by 47 degree angles is fixed on the hub disk 8.
The utility model impeller 4 adopts aluminum-magnesium alloy material, and shroud 7, hub disk 8 and blade 6 are integrally welded; Wheel hub 9 is the aluminum-magnesium alloy material of using of die casting or casting.
The utility model housing 1 is an all-welded structure, and sheet metal thickness is determined according to the pressure range of blower fan, guaranteed the low vibrations under high rotating speed.
But above-mentioned embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (4)
1. a BI does not have the volute centrifugal blower, comprise housing, impeller, the horn mouth that is connected with impeller, described impeller comprises shroud, hub disk, is fixed on the blade on the hub disk, and be connected wheel hub on the hub disk, the main shaft that is connected with motor pass wheel hub by bearing fixing on housing, it is characterized in that: described blade is an airfoil, and has 12, and evenly distributing is fixed on the described hub disk.
2. a kind of BI according to claim 1 does not have the volute centrifugal blower, it is characterized in that: described blade, hub disk and shroud are integrally welded.
3. a kind of BI according to claim 1 and 2 does not have the volute centrifugal blower, it is characterized in that: described impeller adopts aluminum-magnesium alloy material.
4. a kind of BI according to claim 3 does not have the volute centrifugal blower, it is characterized in that: described housing is integrally welded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201386567U CN201636081U (en) | 2010-03-23 | 2010-03-23 | Backward-tilting type volute-free centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201386567U CN201636081U (en) | 2010-03-23 | 2010-03-23 | Backward-tilting type volute-free centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201636081U true CN201636081U (en) | 2010-11-17 |
Family
ID=43080572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201386567U Expired - Fee Related CN201636081U (en) | 2010-03-23 | 2010-03-23 | Backward-tilting type volute-free centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201636081U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338121A (en) * | 2011-10-31 | 2012-02-01 | 永济新时速电机电器有限责任公司 | High-efficiency motor external fan |
| CN108390500A (en) * | 2018-02-08 | 2018-08-10 | 浙江希尔富电气有限公司 | One kind being based on brushless motor and the special noise reduction combined mechanism of wind turbine |
| CN109268997A (en) * | 2018-11-12 | 2019-01-25 | 珠海格力电器股份有限公司 | A kind of fan section and air-conditioner set of unitary air handling unit |
-
2010
- 2010-03-23 CN CN2010201386567U patent/CN201636081U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338121A (en) * | 2011-10-31 | 2012-02-01 | 永济新时速电机电器有限责任公司 | High-efficiency motor external fan |
| CN108390500A (en) * | 2018-02-08 | 2018-08-10 | 浙江希尔富电气有限公司 | One kind being based on brushless motor and the special noise reduction combined mechanism of wind turbine |
| CN109268997A (en) * | 2018-11-12 | 2019-01-25 | 珠海格力电器股份有限公司 | A kind of fan section and air-conditioner set of unitary air handling unit |
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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: 20101117 Termination date: 20150323 |
|
| EXPY | Termination of patent right or utility model |