CN110439834B - Ternary fluidization centrifugal fan for toughening furnace - Google Patents
Ternary fluidization centrifugal fan for toughening furnace Download PDFInfo
- Publication number
- CN110439834B CN110439834B CN201910782878.8A CN201910782878A CN110439834B CN 110439834 B CN110439834 B CN 110439834B CN 201910782878 A CN201910782878 A CN 201910782878A CN 110439834 B CN110439834 B CN 110439834B
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- ternary
- front side
- angle
- disc
- blade
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- 238000005243 fluidization Methods 0.000 title claims abstract description 10
- 238000005496 tempering Methods 0.000 claims abstract 4
- 238000010030 laminating Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000005341 toughened glass Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Abstract
The utility model provides a ternary fluidization centrifugal fan for tempering furnace, including the spiral case, the impeller, main shaft and motor, the fan impeller includes the front disc, rear disc and a plurality of ternary distortion blade, the both sides that define ternary distortion blade and front and rear disc laminating are the front and back side respectively, the one end that the front and back side is close to the fan impeller axis is the entry end, the one end that keeps away from the fan impeller axis is the exit end, be 22~27 between the front side molded line entry angle between the blade curved surface tangent line of front side entry end and the concentric circle tangent line of front disc through the front side entry end, be 45~50 front side molded line exit angle between the blade curved surface tangent line of front side exit end and the concentric circle tangent line of front disc through the front side exit end on the rear disc, be 25~32 between the blade curved surface tangent line of rear side exit end and the concentric circle tangent line of rear side exit end on the rear disc be 53~ 63.
Description
Technical Field
The invention relates to the field of centrifugal fans, in particular to a ternary fluidization centrifugal fan for a toughening furnace.
Background
In the process of tempered glass, a centrifugal fan is generally adopted for air cooling quenching treatment, namely, the surface layer of the glass is subjected to quenching treatment to form compressive stress, and tensile stress is formed in the glass, so that the strength of the glass is improved. When the glass is quenched, the air valve is adjusted to enable the fan to operate under the working condition of maximum air quantity, and when the quenching process is finished, the fan is enabled to operate under the working condition of minimum air quantity. Due to the viscous effect, the viscous boundary layers on the surfaces of the front disk, the rear disk and the blades develop towards the inside of the channel along with the flow after the fluid enters the impeller flow channel, and the interaction between the boundary layers and the main flow forms a more complex flow form. The airflow passes through the collector and is changed from axial direction to radial direction, and is converged and diffused firstly, and the diffusion after turning is intensified. Therefore, the air is distributed on the meridian surface in front of the impeller inlet, the air flow angles of the air flow at the front disc and the rear disc are inconsistent due to the non-uniformity, and the separation of the surfaces of the blades is increased due to the fact that the attack angle is too large or too small, the efficiency is reduced, and the quality of glass is affected. At present, the toughened glass production demand is increasingly increased, and in order to reach required parameters, the existing centrifugal fan is higher in impeller height and larger in size, and is difficult to meet the use requirements due to the fact that potential hazards such as impeller tearing and explosion are easily generated in complex working conditions.
Disclosure of Invention
In order to solve the problem that the conventional centrifugal fan is difficult to meet the use requirement in toughened glass processing, the invention provides a ternary fluidization centrifugal fan for a toughening furnace.
The technical scheme adopted by the invention for solving the technical problems is as follows: the ternary fluidization centrifugal fan comprises a volute, a fan impeller positioned in the volute, a main shaft for sleeving the fan impeller, and a motor for driving the main shaft and the fan impeller to rotate, wherein the fan impeller comprises a front disc, a rear disc, a hub and a plurality of ternary twisting blades, the ternary twisting blades are arranged between the front disc and the rear disc, the ternary twisting blades are uniformly arranged at intervals along the circumferential direction of the fan impeller, one side, which is used for defining the lamination of the ternary twisting blades and the front disc, of the ternary twisting blades is a front side, one side, which is used for defining the lamination of the ternary twisting blades and the rear disc, of the ternary twisting blades is a rear side, one ends, which are used for defining the front side and the rear side, close to the axis of the fan impeller are inlet ends, one ends, which are far away from the axis of the fan impeller, of the front side and the rear side are outlet ends, the included angle between the blade curved surface tangent line of the front side inlet end and the concentric circle tangent line passing through the front side inlet end on the front disc is defined as a front side molded line inlet angle, the front side molded line inlet angle is 22-27 degrees, the included angle between the blade curved surface tangent line of the front side outlet end and the concentric circle tangent line passing through the front side outlet end on the front disc is defined as a front side molded line outlet angle, the front side molded line outlet angle is 45-50 degrees, the included angle between the blade curved surface tangent line of the rear side inlet end and the concentric circle tangent line passing through the rear side inlet end on the rear disc is defined as a rear side molded line inlet angle, the included angle between the blade curved surface tangent line of the rear side outlet end and the concentric circle tangent line passing through the rear side outlet end on the rear disc is defined as a rear side molded line outlet angle, and the rear molded line outlet angle is 53-63 degrees.
Preferably, the front side molded line inlet angle is 25 degrees, and the front side molded line outlet angle is 48 degrees; the backside profile entry angle was 27 ° and the backside profile exit angle was 57 °.
Preferably, the number of the ternary twisting blades is n, and n is more than or equal to 12 and less than or equal to 18.
Preferably, the number of the ternary twisting blades is 14.
Preferably, a current collector is arranged in the volute, an air outlet of the current collector is communicated with an air inlet of the fan impeller, and an air damper is arranged on the air inlet of the current collector.
According to the technical scheme, the invention has the beneficial effects that:
according to the invention, a full-working-condition three-dimensional simulation is carried out on the whole fan, a numerical simulation means is added on the basis of manual design, the speed vector of air flow in a flow field is observed through CFD analysis and is optimized, so that an optimal ternary model with minimum loss is obtained, and the elements such as the inlet angle, the outlet angle and the like of the blade are optimized by using a ternary flow design method, and the structure of the three-dimensional simulation device can adapt to the actual flow state of fluid, so that the air flow in an impeller and at the outlet of the impeller is more uniform, the air flow in a volute is improved, the reduction of the aerodynamic noise in the volute is facilitated, the loss of idle work is reduced, and the aerodynamic parameters and the efficiency of the whole fan are improved; the ternary twisted blade can enable airflow to flow more closely to the surface of the blade, effectively reduce flow separation of solid wall surfaces, reduce flow loss, improve each section angle of the blade according to a flow field, obtain an optimal flow state inside the whole machine, inhibit separation of boundary layers, reduce the existence of channel vortices between adjacent blades, enable the airflow speed direction and the airflow size entering a volute to be more uniform, enable entropy increment at a blade channel outlet to be smaller, enable static pressure to be stable in growth, enable the airflow inside the volute to flow uniformly, enable the efficiency to be improved by 3-5% compared with the existing common centrifugal fan, enable the number size to be integrally reduced by 3-5%, enable noise values to be reduced by 3-5 dB, enable weight and size to be reduced compared with a common fan, and enable energy consumption to be reduced.
Drawings
FIG. 1 is a schematic illustration of the present invention;
FIG. 2 is a schematic diagram of a fan wheel;
FIG. 3 is a schematic view of the front tray, when removed, as viewed from the front tray toward the rear tray;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
FIG. 5 is a schematic view of a front side profile entry angle;
FIG. 6 is an enlarged partial schematic view of FIG. 5;
FIG. 7 is a schematic view of a front side profile outlet angle;
FIG. 8 is an enlarged partial schematic view of FIG. 7;
FIG. 9 is a schematic view of a backside profile entry angle;
FIG. 10 is an enlarged partial schematic view of FIG. 9;
FIG. 11 is a schematic view of a backside profile outlet angle;
fig. 12 is an enlarged partial schematic view of fig. 11.
The marks in the figure: 1. a current collector 2, a fan impeller 3, a volute casing 4, a main shaft 5, a motor 6, a damper 7 and a front disc, 8, a rear disc, 9, a hub, 10, a ternary twisted blade, 11, a blade curved surface tangent line, 12 and a concentric circle tangent line.
Detailed Description
Referring to the drawings, the specific embodiments are as follows:
a ternary fluidization centrifugal fan for a toughening furnace comprises a volute 3, a fan impeller 2 positioned in the volute 3, a main shaft 4 used for sleeving the fan impeller 2 and a motor 5 used for driving the main shaft 4 and the fan impeller 2 to rotate, wherein a current collector 1 is further installed in the volute 3, an air outlet of the current collector 1 is communicated with an air inlet of the fan impeller 2, and a wind regulating door 6 is installed on the air inlet of the current collector 1. The fan impeller 2 comprises a front disc 7, a rear disc 8, a hub 9 and a plurality of ternary twisting blades 10, wherein the ternary twisting blades 10 are arranged between the front disc 7 and the rear disc 8, the ternary twisting blades 10 are uniformly arranged at intervals along the circumferential direction of the fan impeller 2, the number of the ternary twisting blades 10 is n, and n is more than or equal to 12 and less than or equal to 18.
Defining a side, which is attached to the front disc 7, of the ternary twisted blade 10 as a front side, defining a side, which is attached to the rear disc 8, of the ternary twisted blade 10 as a rear side, defining one end, which is close to the axis of the fan impeller 2, of the front side and the rear side as inlet ends, defining one end, which is far away from the axis of the fan impeller 2, of the front side and the rear side as outlet ends, defining an included angle between a blade curved surface tangent 11 of the front side inlet end and a concentric circle tangent 12, which passes through the front side inlet end, on the front disc 7 as a front side line inlet angle, defining an included angle between a blade curved surface tangent 11 of the front side outlet end and a concentric circle tangent 12, which passes through the front side outlet end, on the front disc 7 as a front side line outlet angle, defining an included angle between a blade curved surface tangent 11 of the rear side inlet end and a concentric circle tangent 12, which passes through the rear side outlet end, on the rear disc 8 as a rear side line inlet angle, as a rear side line angle between a blade curved surface tangent 11 and a concentric circle tangent 12, which passes through the rear side outlet end, on the rear disc 8 as a rear side line outlet angle between the rear side and a rear side line outlet angle as a rear side line outlet angle between the rear side and a rear side line tangent line 12 as a rear side outlet angle between the rear side and a rear side line outlet angle as a rear side line 63 is 45-53.
The three-dimensional twisted blade shape adopted in the embodiment is a three-dimensional model which is obtained by observing the velocity vector of air flow in a flow field through CFD analysis and optimizing the velocity vector to obtain the optimal three-dimensional model with the minimum loss, and the air flow in an impeller and at the outlet of the impeller is more uniform by using the blade shape obtained after optimizing the three-dimensional flow design method, so that the air flow in a volute is improved, the efficiency can be improved by 3-5%, the size of a machine number can be reduced by 3-5%, the noise value is reduced by 3-5 dB, the weight and the size are reduced compared with those of a common fan, and the energy consumption is reduced, wherein in order to achieve the optimal effect, the number of the three-dimensional twisted blades 10 is set to be 14, the front side line inlet angle is determined to be 25 degrees, and the front side line outlet angle is determined to be 48 degrees; the inlet angle of the rear side molded line is 27 degrees, the outlet angle of the rear side molded line is 57 degrees, and the optimal flow state in the whole machine can be obtained.
Claims (3)
1. A ternary fluidization centrifugal fan for tempering furnace, includes spiral case (3), is located inside fan impeller (2) of spiral case (3), is used for main shaft (4) of air feed fan impeller (2) suit to and be used for driving main shaft (4) and fan impeller (2) rotatory motor (5), fan impeller (2) including front disc (7), back dish (8), wheel hub (9) and a plurality of ternary distortion blade (10), ternary distortion blade (10) are installed between front disc (7) and back dish (8), a plurality of ternary distortion blade (10) set up its characterized in that along the circumference of fan impeller (2) even interval: defining one side of the ternary twisting blade (10) attached to the front disc (7) as a front side surface, defining one side of the ternary twisting blade (10) attached to the rear disc (8) as a rear side surface, defining one ends of the front side surface and the rear side surface, which are close to the axis of the fan impeller (2), as inlet ends, and one ends of the front side surface and the rear side surface, which are far away from the axis of the fan impeller (2), as outlet ends, defining an included angle between a blade curved surface tangent line (11) of the front side surface inlet end and a concentric circle tangent line (12) passing through the front side surface inlet end on the front disc (7) as a front side line inlet angle, wherein the front side line inlet angle is 22-27 degrees, an included angle between a blade curved surface tangent line (11) of the front side surface outlet end and a concentric circle tangent line (12) passing through the front side surface outlet end on the front disc (7) as a front side line outlet angle of 45-50 degrees, and an included angle between a blade curved surface tangent line (11) of the rear side surface inlet end and a concentric circle tangent line (12) of the rear side surface on the rear disc (8) as a rear side surface inlet angle of the rear side surface inlet end of 63-53 degrees;
the number of the ternary twisting blades (10) is n, and n is more than or equal to 12 and less than or equal to 18;
the volute (3) is internally provided with a current collector (1), an air outlet of the current collector (1) is communicated with an air inlet of the fan impeller (2), and an air damper (6) is arranged on the air inlet of the current collector (1).
2. A ternary fluidization centrifugal fan for a tempering furnace according to claim 1, wherein: the front side molded line inlet angle is 25 degrees, and the front side molded line outlet angle is 48 degrees; the backside profile entry angle was 27 ° and the backside profile exit angle was 57 °.
3. A ternary fluidization centrifugal fan for a tempering furnace according to claim 1, wherein: the number of the ternary twisting blades (10) is 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782878.8A CN110439834B (en) | 2019-08-23 | 2019-08-23 | Ternary fluidization centrifugal fan for toughening furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782878.8A CN110439834B (en) | 2019-08-23 | 2019-08-23 | Ternary fluidization centrifugal fan for toughening furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110439834A CN110439834A (en) | 2019-11-12 |
| CN110439834B true CN110439834B (en) | 2024-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910782878.8A Active CN110439834B (en) | 2019-08-23 | 2019-08-23 | Ternary fluidization centrifugal fan for toughening furnace |
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| Country | Link |
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| CN (1) | CN110439834B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126878Y (en) * | 1992-02-13 | 1993-02-10 | 湘潭华盛空调环保工程有限公司 | Middle, high voltage three-way blade centrifugal energy-saving fan |
| CN102536857A (en) * | 2010-12-13 | 2012-07-04 | 洛阳北玻台信风机技术有限责任公司 | Cooling fan for traction converter of high-speed electric locomotive |
| CN102803740A (en) * | 2010-02-05 | 2012-11-28 | 卡梅伦国际有限公司 | Centrifugal compressor diffuser vanelet |
| CN106402001A (en) * | 2016-10-17 | 2017-02-15 | 宁波方太厨具有限公司 | Fan power system |
| CN107642491A (en) * | 2017-11-02 | 2018-01-30 | 洛阳北玻台信风机技术有限责任公司 | Motor-car, the cooling of high ferro tractive transformer fluidize centrifugal blower with ternary |
| KR20180133954A (en) * | 2017-05-17 | 2018-12-18 | (주)에이피 | High efficiency and low noise type impeller and fancoil unite having the same |
| CN109595198A (en) * | 2018-12-07 | 2019-04-09 | 佛山市南海九洲普惠风机有限公司 | A kind of draught fan impeller |
| CN210509660U (en) * | 2019-08-23 | 2020-05-12 | 洛阳北玻台信风机技术有限责任公司 | Ternary fluidization centrifugal fan for toughening furnace |
-
2019
- 2019-08-23 CN CN201910782878.8A patent/CN110439834B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126878Y (en) * | 1992-02-13 | 1993-02-10 | 湘潭华盛空调环保工程有限公司 | Middle, high voltage three-way blade centrifugal energy-saving fan |
| CN102803740A (en) * | 2010-02-05 | 2012-11-28 | 卡梅伦国际有限公司 | Centrifugal compressor diffuser vanelet |
| CN102536857A (en) * | 2010-12-13 | 2012-07-04 | 洛阳北玻台信风机技术有限责任公司 | Cooling fan for traction converter of high-speed electric locomotive |
| CN106402001A (en) * | 2016-10-17 | 2017-02-15 | 宁波方太厨具有限公司 | Fan power system |
| KR20180133954A (en) * | 2017-05-17 | 2018-12-18 | (주)에이피 | High efficiency and low noise type impeller and fancoil unite having the same |
| CN107642491A (en) * | 2017-11-02 | 2018-01-30 | 洛阳北玻台信风机技术有限责任公司 | Motor-car, the cooling of high ferro tractive transformer fluidize centrifugal blower with ternary |
| CN109595198A (en) * | 2018-12-07 | 2019-04-09 | 佛山市南海九洲普惠风机有限公司 | A kind of draught fan impeller |
| CN210509660U (en) * | 2019-08-23 | 2020-05-12 | 洛阳北玻台信风机技术有限责任公司 | Ternary fluidization centrifugal fan for toughening furnace |
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| Publication number | Publication date |
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| CN110439834A (en) | 2019-11-12 |
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