CN203348156U - Efficient energy-saving fan - Google Patents
Efficient energy-saving fan Download PDFInfo
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- CN203348156U CN203348156U CN 201320245348 CN201320245348U CN203348156U CN 203348156 U CN203348156 U CN 203348156U CN 201320245348 CN201320245348 CN 201320245348 CN 201320245348 U CN201320245348 U CN 201320245348U CN 203348156 U CN203348156 U CN 203348156U
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Abstract
An efficient energy-saving fan comprises a machine shell, an impeller assembly, a transmission assembly and a motor. The impeller assembly comprises rear plate vanes (5), an arc-shaped wheel cover (6), a slab-type wheel disk (7) and a hub (8). The sixteen rear plate vanes (5) are evenly distributed in the circumferential direction of the hub and are welded between the arc-shaped wheel cover (6) and the slab-type wheel disk (7), and the profile of an air inlet (3) of a machine shell (1) is of a conical arc shape narrowing axially. The efficient energy-saving fan is high in efficiency, wide in efficient area and low in noise, and saves energy. Abrasion of inlets of the vanes is little, and service life of an impeller is prolonged. The impeller is composed of the rear plate vanes, so that overload of the fan is not prone to occurrence, and the efficient energy-saving fan is convenient to process and wide in application range.
Description
Technical field
The utility model relates to the blower fan technical field, specifically a kind of efficient 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 efficient energy-saving fan, further provides a kind of energy-efficient performance more excellent 7-27 serial fan.
The technical scheme in the invention for solving the technical problem is: a kind of efficient 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 wheel hub (8), wherein 16 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.
In described impeller assembly: the blade exit diameter is 400mm~4000mm, and inlet diameter is 190mm~1900mm, and width is 72.7mm~727mm, and exit width is 37.35mm~373.5mm, and blade outlet angle is 67.3 °;
The inlet diameter of described intake grill (3) is 247.5mm~2475mm, and width is 94.95~949.5mm;
Described casing (1) width is 91.1mm~911mm, and the casing export center is that 300.4mm~3004mm, casing outlet are 91.1 * 221.1mm~911 * 2211mm to the casing center.
The above-mentioned flow passage component size of impeller, intake grill and casing can zoom in or out on year-on-year basis makes series product.
In described impeller assembly: the blade exit diameter is 800mm, and inlet diameter is 380mm, and width is 145.4mm, and exit width is 74.7mm, and blade outlet angle is 67.3 °;
The inlet diameter of described intake grill (3) is 495mm, and width is 189.9mm.
Described casing (1) width is 182.2mm, and the casing export center is that 600.8mm, casing outlet are 182.2mm * 442.2mm to the casing center.
The beneficial effects of the utility model are:
Blower fan series model of the present utility model is 7-27 series, belongs to middle small flow, the Intermediate High Pressure category, and the highest fan efficiency is 85.63%.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 9-26,6-31 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 7-27 efficient energy-saving fan model, is one of above-mentioned two each and every one blower fan series models, and trade name is 7-27 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 cap (6) of 16 backward plate blades (5), arc, plate shaped wheel disc (7) and wheel hub (8).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.
Impeller flow passage component major character:
The blade exit diameter is 800mm, and inlet diameter is 380mm, and width is 145.4mm, and exit width is 74.7mm, and blade outlet angle is 67.3 °;
The inlet diameter of intake grill (3) is 495mm, and width is 189.9mm.
Casing (1) width is 182.2mm, and the casing export center is that 600.8mm, casing outlet are 182.2mm * 442.2mm to the casing center.
Nothing is performance curve and parameter attribute therefore: flow coefficient 0.7075, pressure coefficient 0.6780, power factor 0.5602, fan efficiency 85.63%.
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)
For example: certain Iron And Steel Plant's fan design parameter: Pa=101325; ρ=0.852kg/m
3; Flow=134700m
3/ h; Total head=14300Pa;
Type selecting: existing optional 7-27 № 20.7D(n=1450r/min)
Table 1 has provided 7-27 № 20.7D and 6-31 № 22.1D has the dimension performance relatively.
Table 1
Meet as can be seen from Table 1 general flow and pressure, select 7-27 № 20.7D higher by 4.9% than selecting 6-31 № 22.1D impeller adiabatic efficiency, impeller power descends 6.2%.And plane No. reduces, not only can save material, reduce costs.Can also subtract trochantinian rotary inertia GD
2, the critical speed of rotation of reduction rotor, extend bearing life, increases impeller intensity.
Corresponding efficient operating point zero dimension performance parameter is: flow coefficient 0.7075, pressure coefficient 0.6780, power factor 0.5602, fan efficiency 85.63%.
Except the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (2)
1. an efficient 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 wheel hub (8), wherein 16 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 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 380mm, and width is 145.4mm, and exit width is 74.7mm, and blade outlet angle is 67.3 °;
The inlet diameter of described intake grill (3) is 495mm, and width is 189.9mm;
Described casing (1) width is 182.2mm, and the casing export center is that 600.8mm, casing outlet are 182.2mm * 442.2mm to the casing center.
2. a kind of efficient 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.
Priority Applications (1)
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CN 201320245348 CN203348156U (en) | 2013-05-08 | 2013-05-08 | Efficient energy-saving fan |
Applications Claiming Priority (1)
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CN 201320245348 CN203348156U (en) | 2013-05-08 | 2013-05-08 | Efficient energy-saving fan |
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CN203348156U true CN203348156U (en) | 2013-12-18 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103277338A (en) * | 2013-05-08 | 2013-09-04 | 济南风机厂有限责任公司 | High-efficiency energy-saving fan |
-
2013
- 2013-05-08 CN CN 201320245348 patent/CN203348156U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103277338A (en) * | 2013-05-08 | 2013-09-04 | 济南风机厂有限责任公司 | High-efficiency energy-saving fan |
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Legal Events
Date | Code | Title | Description |
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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: 20131218 Termination date: 20170508 |
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CF01 | Termination of patent right due to non-payment of annual fee |