CN203348157U - Energy-saving draught fan - Google Patents
Energy-saving draught fan Download PDFInfo
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- CN203348157U CN203348157U CN 201320245254 CN201320245254U CN203348157U CN 203348157 U CN203348157 U CN 203348157U CN 201320245254 CN201320245254 CN 201320245254 CN 201320245254 U CN201320245254 U CN 201320245254U CN 203348157 U CN203348157 U CN 203348157U
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Abstract
An energy-saving draught fan comprises a shell, a vane wheel assembly and an air inlet. The vane wheel assembly is composed of 20 backward plate-shaped vanes, an arc-shaped wheel cover, a flat wheel disc and a wheel hub. The 20 backward plate-shaped vanes are evenly distributed in the circumferential direction and welded between the arc-shaped wheel cover and the flat wheel disc to be assembled with the wheel hub. The shell and the air inlet are of a welded structure, and the molded line of the welded structure is of a conical arc shape which is convergent in the axial direction. The blade outlet diameter of a vane wheel 2 is 800mm, the inlet diameter is 512.3mm, the width is 200.9mm, the outlet width is 117.9mm, and the blade outlet angle is 71.3 degrees. The diameter of the air inlet 3 is 500mm, and the width of the air inlet 3 is 199.8mm. The energy-saving draught fan is high in efficiency, low in noise, long in service life and wide in application range.
Description
Technical field
The utility model relates to the blower fan technical field, specifically a kind of energy-saving fan.
Background technique
Along with the high speed development of national economy, the quickening of modernization construction, increase sharply to the demand of all kinds blower fan.But at present existing some blower fan series exists volume large, and fan performance is not good, and efficiency is low, the shortcoming such as consume energy large.For the fast development that the meets China's economy demand to blower fan, improve the technical merit of Fan Product, implement national information section about the eliminating of outmoded products progressively, promote new product spirit.So advantage of the fan design software development of Shenyang Blower research institute and Tsing-Hua University's fluid internal class, application and experimental study ability, combination among the strong ones, in May, 2009, set up the project, blower fan series type spectrum for existing most manufacturer production, in line with plugging a gap, take energy-efficient, it is target, and the principle that replaces as far as possible broad-spectrum other series product, plan and develop two blower fan series models.
By the time of 3 years, Tsing-Hua University's fluid the complete machine complex flowfield of multiple design proposal is carried out to numerical simulation, fan performance is estimated and hundreds of time Pneumatic Calculation has been carried out in optimization, my company (Jinan blower fan factory Co., Ltd.) manufacturing 9 cover blower fan models, carried out 40 test of many times researchs, oneself has completed this project.Two blower fan series models have all reached re-set target.
Wherein disclosed a kind of blower fan in Chinese patent 2009200100536, just belong to a kind of model, and wherein the blower fan for this kind of model also has the space of further optimizing.
The model utility content
The purpose of this utility model is to provide a kind of energy-saving fan, further provides a kind of energy-efficient performance more excellent blower fan, especially for a kind of series model of 7-45 model efficient energy-saving fan.
The technical scheme in the invention for solving the technical problem is: a kind of energy-saving fan, comprise casing, impeller assembly, transmitting assemblies and motor, described casing is the volute housing, the side of casing has intake grill, top has exhaust outlet, described impeller assembly is arranged in casing, and described impeller assembly is driven by motor by transmitting assemblies, it is characterized in that, described impeller assembly comprises backward plate blade (5), the wheel cap of arc (6), plate shaped wheel disc (7) and circular wheel hub (8), wherein 20 backward plate blades (5) are circumferentially uniform along wheel hub, and be welded between the wheel cap (6) and plate shaped wheel disc (7) of arc,
The volute body that casing (1) is welded for sheet material, intake grill (3) is welded structure, its molded line is the cone arc of restraining vertically.
Further, described blade exit diameter is 400mm～4000mm, and inlet diameter is 256.1mm～2561mm, and width is 100.4mm～1004mm, and exit width is 58.95mm～589.5mm, and blade outlet angle is 71.3 °;
The inlet diameter of described intake grill (3) is 250mm～2500mm, and width is 99.9mm～999mm number range;
Described casing (1) width is 147.4mm～1474mm, and the casing export center is that 316.1mm～3161mm, casing outlet are 147.4 * 320.7mm～1474 * 3207mm to the casing center.
The above-mentioned flow passage component size of described impeller, intake grill and casing can zoom in or out on year-on-year basis makes series product.
As one group of data of optimum, in described impeller assembly: the blade exit diameter is 800mm, and inlet diameter is 512.3mm, and width is 200.9mm, and exit width is 117.9mm, and blade outlet angle is 71.3 °;
The inlet diameter of described intake grill (3) is 500mm, and width is 199.8mm.
Described casing (1) width is 294.8mm, and the casing export center is that 632.3mm, casing outlet are 294.8mm * 641.4mm to the casing center.
Corresponding efficient operating point zero dimension performance parameter is: flow coefficient 0.1445, pressure coefficient 0.6384, power factor 0.1061, fan efficiency 87.0%.
The beneficial effects of the utility model are:
Blower fan series model of the present utility model is 7-45 series, belongs to middle small flow, the Intermediate High Pressure category, and the highest fan efficiency is 87.0%.Can be used as boiler primary air fan, overfire air fan and high-head induced draught fan and dedusting fan, gas-blowing engine, coal dust ventilator, main exhauster of sintering etc. with the blower fan of this modeling design.Show its advantage that performance is good, efficiency is high in Fan Selection.And can replace the most of operating point of 6-31,4-68 be widely applied in fields such as power station, metallurgy for many years.
The utility model also has the following advantages: efficiency is high and efficient region is wide, energy-conservation, noise is low; Blade import wearing and tearing are little, extend impeller working life; Impeller is backward plate blade, so motor is difficult for overload; Easy to process; Of many uses.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the blade wheel structure schematic diagram.
Fig. 4 is the right elevation of Fig. 3.
Fig. 5 is nothing of the present utility model so performance chart.Wherein Φ is flow coefficient, and Ψ is coefficient of total pressure, and λ is power factor, and η r is impeller power.
In figure:
Embodiment
As shown in Figures 1 to 5,
The purpose of this utility model, be to provide a kind of 7-45 efficient energy-saving fan model, is one of above-mentioned two each and every one blower fan series models, and trade name is 7-45 efficient energy-saving fan series model.Comprise casing 1, impeller assembly 2, intake grill 3 and transmitting assemblies 4.
Described impeller assembly is comprised of the wheel hub (8) of wheel cap (6), a plate shaped wheel disc (7) and a circle of 20 backward plate blades (5), an arc.16 backward plate blades (5) are circumferentially uniform along wheel hub, and are welded between the wheel cap (6) and plate shaped wheel disc (7) of arc, with wheel hub (8), by fastening piece, are assembled, and form a kind of blower fan model.
Below with following impeller flow passage component major character data, describe advantage:
The blade exit diameter is 800mm, and inlet diameter is 512.3mm, and width is 200.9mm, and exit width is 117.9mm, and blade outlet angle is 71.3 °;
The inlet diameter of described intake grill (3) is 500mm, and width is 199.8mm.
Described casing (1) width is 294.8mm, and the casing export center is that 632.3mm, casing outlet are 294.8mm * 641.4mm to the casing center.
Corresponding efficient operating point zero dimension performance parameter is: flow coefficient 0.1445, pressure coefficient 0.6384, power factor 0.1061, fan efficiency 87.0%.
Because product line designs by modeling, so the above-mentioned flow passage component size of impeller, intake grill and casing can zoom in or out on year-on-year basis and make series product, all within protection.
(as the implication of each numerical value of 4-72No5A: the blower fan model: 4-724 representative pressure coefficient, 72 represent air volume coefficient No be which the meaning 5 represent impeller diameter (500mm) A kind of drive motor and blower fan direct-connected)
The type selecting advantage:
For example: certain Iron And Steel Plant's fan design parameter: Pa=101325; ρ=1.056kg/m3; Flow=100591m3/h; Total head=8546Pa;
Type selecting: existing optional 7-45 № 14.8D(n=1450r/min)
Table 1 has provided 7-45 № 14.8D and 6-31 № 17.5D has the dimension performance relatively.
Table 1
| ? | Flow m 3/h | Total head Pa | Impeller adiabatic efficiency % | Impeller power KW |
| 6-31№17.5D | 100591 | 8538 | 72.1 | 330.9 |
| 7-45№14.8D | 100591 | 8550 | 87.0 | 274.5 |
| Deviate % | 0 | +0.1 | +14.9 | -20.5 |
Meet as can be seen from Table 1 general flow and pressure, select 7-45 № 14.8D higher by 14.9% than selecting 6-31 № 17.5D impeller adiabatic efficiency, impeller power descends 20.5%.And plane No. significantly reduces, not only can save material, reduce costs.Can also subtract trochantinian rotary inertia GD2, reduce the critical speed of rotation of rotor, extend bearing life, increase impeller intensity.
Described nothing so performance curve and parameter attribute: flow coefficient 0.1445, pressure coefficient 0.6384, power factor 0.1061, fan efficiency 87.0%.
Because product line designs by modeling, the above-mentioned flow passage component size of dimension impeller, intake grill and casing can zoom in or out on year-on-year basis makes series product, all within protection.
Except the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (3)
1. an energy-saving fan, comprise casing, impeller assembly, transmitting assemblies and motor, described casing is the volute housing, the side of casing has intake grill, top has exhaust outlet, described impeller assembly is arranged in casing, and described impeller assembly is driven by motor by transmitting assemblies, described impeller assembly comprises backward plate blade (5), the wheel cap of arc (6), plate shaped wheel disc (7) and circular wheel hub (8), wherein 20 backward plate blades (5) are circumferentially uniform along wheel hub, and be welded between the wheel cap (6) and plate shaped wheel disc (7) of arc, intake grill (3) molded line of described casing (1) is the cone arc of restraining vertically, it is characterized in that:
In described impeller assembly: the blade exit diameter is 800mm, and inlet diameter is 512.3mm, and width is 200.9mm, and exit width is 117.9mm, and blade outlet angle is 71.3 °;
The inlet diameter of described intake grill (3) is 500mm, and width is 199.8mm;
Described casing (1) width is 294.8mm, and the casing export center is that 632.3mm, casing outlet are 294.8mm * 641.4mm to the casing center.
2. a kind of energy-saving fan according to claim 1, is characterized in that, the above-mentioned flow passage component size of described impeller, intake grill and casing can zoom in or out on year-on-year basis makes series product.
3. a kind of energy-saving fan according to claim 1 and 2, is characterized in that, corresponding efficient operating point zero dimension performance parameter is: flow coefficient 0.1445, pressure coefficient 0.6384, power factor 0.1061, fan efficiency 87.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245254 CN203348157U (en) | 2013-05-08 | 2013-05-08 | Energy-saving draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245254 CN203348157U (en) | 2013-05-08 | 2013-05-08 | Energy-saving draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348157U true CN203348157U (en) | 2013-12-18 |
Family
ID=49748064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320245254 Expired - Fee Related CN203348157U (en) | 2013-05-08 | 2013-05-08 | Energy-saving draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348157U (en) |
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2013
- 2013-05-08 CN CN 201320245254 patent/CN203348157U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20170508 |