CN110425157A - A kind of mixed gas centrifugal blower of heavy duty detergent - Google Patents
A kind of mixed gas centrifugal blower of heavy duty detergent Download PDFInfo
- Publication number
- CN110425157A CN110425157A CN201910829710.8A CN201910829710A CN110425157A CN 110425157 A CN110425157 A CN 110425157A CN 201910829710 A CN201910829710 A CN 201910829710A CN 110425157 A CN110425157 A CN 110425157A
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- centrifugal blower
- flow path
- shell shape
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Links
- 239000003599 detergent Substances 0.000 title claims abstract description 14
- 230000007704 transition Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract 1
- 210000002105 tongue Anatomy 0.000 description 21
- 239000007789 gas Substances 0.000 description 14
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000003855 balanced salt solution Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229940053083 eye stream Drugs 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- 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
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- 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
- F04D29/663—Sound attenuation
-
- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of heavy duty detergents to mix gas centrifugal blower, including cover board, spiral case, centrifugal impeller.Centrifugal impeller is mounted on the inside of spiral case；Spiral case has the spiral shell shape flow path portion for surrounding centrifugal impeller and the mouthpiece portion being connected to spiral shell shape flow path portion；Spiral shell shape flow path portion becomes larger along airflow direction section, and the air-out passage in mouthpiece portion has the angle of flare.The present invention is designed using distinctive spiral shell shape flow path portion and mouthpiece portion, have the advantages that structure is simple and difficulty of processing is low, flowing of the optimization airflow in impeller passage improves the aerodynamic stability and efficiency of centrifugal blower entirety, and the centrifugal blower is made to have higher reliability and economy.
Description
Technical field
The present invention relates to centrifugal blower field, specifically a kind of heavy duty detergent mixes gas centrifugal blower.
Background technique
Mixed gas centrifugal blower has many advantages, such as that compact-sized, mixed air-flow coefficient of discharge is big, pressure rise coefficient is high, is widely used in industry
Boiler and Domestic wall furnace；Raising with the raising and industry of people's quality of life to family's electric standard, equipment standard requirement,
Efficiently, stable, compact to become the main developing direction of centrifugal blower and pursue a goal.
Current centrifugal blower mostly uses backward type wind wheel to design.The effect of wind wheel of centrifugal blower be with blade by air-flow by
Axial admission transition is radial outlet, since the pressure ratio of centrifugal blower is generally lower, simple structure and convenient processing, high throughflow
Etc. reasons, the blade of centrifugal blower generally use backward type wind wheel to design, and centrifugal step blade use after to camber blades.It is this
Although design scheme improves the overall efficiency of blower convenient for developing and fabricating, the problem is that, air-flow axially turns
For Radial Flow, air-flow is not mixed by any blade interior, this easilys lead to fuel gas and air cannot be complete
Mixing, so that the gas for preventing blower to be supplied to boiler affects centrifugal blower and mix gas stability, furthermore mix gas from full combustion
The gas density that rear fan is sent out is uneven, so that the efficiency of centrifugal blower declines.
Centrifugal blower main component further includes spiral case part in addition to impeller, and the effect of spiral case is the gas for collecting impeller eye
Stream, and mixed gas air-flow and certain pressure liter are provided in outlet.There are four types of form, fond of gossip, flat tongues, sharp tongue for conventional spiral case volute tongue design
With short tongue, fond of gossip, short tongue, sharp tongue have been referred to as tongue, and the efficiency of centrifugal blower increases substantially when having tongue, and pressure increased,
With the increase of specific speed, influence of the volute tongue to centrifugal blower performance is gradually decreased, the disadvantage is that noise is larger, flat tongue is also known as nothing
Tongue, the advantages of centrifugal blower is that noise is lower when aglossate, the disadvantage is that power consumption is big, low efficiency.In addition the increase in volute outlet section,
The static pressure of centrifugal blower increases, but muzzle velocity is still excessive in most cases, and exporting in centrifugal blower can go out at volute tongue
Existing air-flow is flow backwards, and blower overall performance is caused to decline.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to above-mentioned state of the art, and a kind of heavy duty detergent is provided mixes gas and set
Centrifugal blower is counted, the purpose is to can be achieved with making the smooth guidance of air-flow at centrifugal blower inner outlet using simple structure
Centrifugal blower has higher efficiency, more stable working characteristics and more compact shape, makes the centrifugal blower compared to similar production
Product are more advantageous.
The technical scheme of the invention to solve the technical problem is: a kind of heavy duty detergent mixes gas centrifugal blower, including
Cover board, spiral case, centrifugal impeller.Centrifugal impeller is mounted on the inside of spiral case；Spiral case have around centrifugal impeller spiral shell shape flow path portion,
And the mouthpiece portion being connected to spiral shell shape flow path portion；Spiral shell shape flow path portion becomes larger along airflow direction section, and the outlet air in mouthpiece portion is logical
Road has the angle of flare.
To optimize above-mentioned technical proposal, the invention also includes following improved technical solutions.
Above-mentioned centrifugal impeller is forward-type impeller, and along blade bending direction equidistant placement, quantity is 9 to 23, leaf
Piece thickness 1.1mm to 1.3mm, air inlet blade profile height and air outlet blade profile height ratio are 1.3 to 1.4.
The both ends of above-mentioned spiral shell shape flow path portion have section FP and outlet BA；By section FP to structure between the BA of outlet
At section transition FA, the ratio of the area R1 of the area R2 and section BA in any section are 0.86 to 1 in the transition FA of section.
The center of smallest cross-sectional FP and axis centre line are straight line OF, the center of section A B in above-mentioned section transition FA
It is straight line OA with axis centre line；Straight line OF and straight line OA constitutes angle FOA, and the angle of angle FOA is 50 ° to 95 °.
Above-mentioned mouthpiece portion and spiral shell shape flow path portion junction have section HE and section FG, the friendship between section HE and section FG
Point I and O constitutes line OI, straight line OF and line OI and constitutes angle FOI, and the angle of angle FOI is 8 ° to 15 °.
The above-mentioned angle of flare is the angle that EI extended line and CA extended line are constituted, and the angle of the angle of flare is 2.2 ° to 3.4 °.
Above-mentioned cover board has air intake vent, and the area ratio in air intake vent section and mouthpiece portion air outlet section is 1.1 to 1.9.
Compared with prior art, the invention has the following advantages that
1, spiral case is designed using distinctive spiral shell shape flow path portion and mouthpiece portion, has the advantages that structure is simple and difficulty of processing is low, excellent
Change flowing of the air-flow in impeller passage, improves the aerodynamic stability and efficiency of centrifugal blower entirety, there is the centrifugal blower
Higher reliability and economy；
2, the structure size for optimizing centrifugal blower entirety makes it become more compact, improves the application range of centrifugal blower.
Detailed description of the invention
Fig. 1 is the centrifugal blower schematic cross-sectional view of the embodiment of the present invention.
Fig. 2 is the sectional view along A-A of Fig. 1.
Fig. 3 is air intake vent cross section structure schematic diagram.
Fig. 4 is air outlet cross section structure schematic diagram.
Fig. 5 is volute structure schematic diagram.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Heavy duty detergent of the invention mixes gas and mixes tongue blower, mainly include cover board 1, spiral case 2, spiral shell shape flow path portion 2a, mouthpiece portion 2b,
Centrifugal impeller 3, air intake vent section 4, air outlet section 5.
Heavy duty detergent of the invention mixes gas centrifugal blower, including cover board 1, spiral case 2, centrifugal impeller 3.Centrifugal impeller 3 is mounted on
The inside of spiral case 2.Spiral case 2 has the spiral shell shape flow path portion 2a for surrounding centrifugal impeller 3 and the mouthpiece being connected to spiral shell shape flow path portion 2a
Portion 2b.Spiral shell shape flow path portion 2a becomes larger along airflow direction section, and the air-out passage of mouthpiece portion 2b has the angle of flare.
Centrifugal impeller 3 is forward-type impeller, and along blade bending direction equidistant placement, quantity is 9 to 23, vane thickness
1.1mm to 1.3mm, air inlet blade profile height and air outlet blade profile height ratio are 1.3 to 1.4.In the present embodiment, the number of blade
Amount preferably 18, vane thickness 1.2mm, air inlet blade profile height and air outlet blade profile height ratio are 1.35.The number of blade
Amount is also possible to 16,17,19, and vane thickness is also possible to 1.1mm or 1.3mm.
Existing impeller generallys use prismatic blade design, and the costa of prismatic blade is parallel with axial direction, due to each height of import
The stagnation pressure of noon streamline is of substantially equal, and for centrifugal blower import, blade root air-flow meridian speed is lower compared to blade tip, due to
Their linear velocities under same radius are the same, and prismatic blade design necessarily causes prismatic blade angle and air-flow angle along leaf height
Direction cannot be adapted to completely, and the air-flow along the high direction of leaf can blend mutually, cause energy loss.The present invention is by using forward-type
Blade profile, collocation spiral case 2 mouthpiece portion 2b design, windward side can more effective mixed gas, air-flow can be prevented radially to return
Stream, to improve the flow regime in 2 exit of spiral case.
The both ends of spiral shell shape flow path portion 2a have section FP and outlet BA.It is made of section FP between the BA of outlet
The ratio of the area R1 of the area R2 and section BA in any section are 0.86 to 1 in section transition FA, section transition FA.Its
The area value of middle section FP is minimum, and the ratio of section FP and section BA are 0.86.The area in any section in the transition FA of section
R2 becomes larger along air-out direction.
The center of smallest cross-sectional FP and axis centre line are straight line OF, the center of section A B and axis in the transition FA of section
The line line of centres is straight line OA.Straight line OF and straight line OA constitutes angle FOA, and the angle of angle FOA is 50 ° to 95 °.Angle FOA
Preferred angle is between 55 ° to 80 °, and the angle in the present embodiment is at 60 ° or so.
Existing conventional centrifugal blower mostly uses short tongue and deep tongue design, and short tongue is chiefly used in the centrifugal blower of higher specific speed,
Using efficiency plateau when short tongue, reasonable workspace is larger, and noise is big, and deep tongue is chiefly used in the centrifugal blower of low-specific-speed, deep
Tongue is deeper, its gap between the outlet of impeller is smaller, and the amount of leakage between spiral case spiral shell shape part and volute outlet is smaller, to raising
The efficiency and pressure of blower are advantageous, but noise increases, and efficiency curve steepening, and reasonable operation interval is made to become smaller.For this two
The existing volute tongue disadvantage of kind, spiral case 2 of the invention are formed with mouthpiece portion 2b, and mouthpiece portion 2b includes volute tongue FG and arc HG, be can be improved
The efficiency and pressure of blower reduce noise, and rationally operation interval is larger.
Mouthpiece portion 2b and the spiral shell shape junction flow path portion 2a have section HE and section FG, between section HE and section FG
Intersection I and O constitute line OI, straight line OF and line OI and constitute angle FOI, and the angle of angle FOI is 8 ° to 15 °.
The angle of flare is the angle that EI extended line and CA extended line are constituted, and the angle of the angle of flare is 2.2 ° to 3.4 °.
As shown in figure 3, cover board 1 has air intake vent, the area ratio in air intake vent section 4 and mouthpiece portion 2b air outlet section 5
It is 1.1 to 1.9.As shown in Figure 4 and Figure 5, the expansion that air outlet centrifugation gradual change section LK and arc LNMJ is seamlessly transitted, and exported
Angle is 2.2 degree to 3.4 degree, and expander inner sidewall is tilted to impeller direction of rotation, part dynamic pressure can be made to be changed into static pressure in this way,
So as to improve the static pressure and static pressure efficiency of ventilation equipment.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (7)
1. a kind of heavy duty detergent mixes gas centrifugal blower, including cover board (1), spiral case (2), centrifugal impeller (3), it is characterized in that: described
Centrifugal impeller (3) is mounted on the inside of spiral case (2)；The spiral case (2) has the spiral shell shape flow path portion around centrifugal impeller (3)
(2a) and the mouthpiece portion (2b) being connected to spiral shell shape flow path portion (2a)；The spiral shell shape flow path portion (2a) is along airflow direction section
It becomes larger, the air-out passage of the mouthpiece portion (2b) has the angle of flare.
2. heavy duty detergent according to claim 1 mixes gas centrifugal blower, it is characterized in that: the centrifugal impeller (3) be it is preceding to
Formula impeller, along blade bending direction equidistant placement, quantity is 9 to 23, vane thickness 1.1mm to 1.3mm, air inlet blade profile
Height is 1.3 to 1.4 with air outlet blade profile height ratio.
3. heavy duty detergent according to claim 1 mixes gas centrifugal blower, it is characterized in that: the both ends of the spiral shell shape flow path portion (2a)
With section FP and outlet BA；By section FP to constituting section transition FA, section transition FA between the BA of outlet
In any section area R2 and section BA area R1 ratio be 0.86 to 1.
4. heavy duty detergent according to claim 3 mixes gas centrifugal blower, it is characterized in that: minimum in the section transition FA cut
The center of face FP and axis centre line are straight line OF, and the center of section A B and axis centre line are straight line OA；Straight line OF with
Straight line OA constitutes angle FOA, and the angle of the angle FOA is 50 ° to 95 °.
5. efficiently mixed gas blower according to claim 4, it is characterized in that: the mouthpiece portion (2b) and spiral shell shape flow path portion
The junction of (2a) has section HE and section FG, and the intersection I and O between the section HE and section FG constitute line OI, directly
Line OF and line OI constitutes angle FOI, and the angle of the angle FOI is 8 ° to 15 °.
6. heavy duty detergent according to claim 1 mixes gas centrifugal blower, it is characterized in that: the angle of flare be EI extended line with
The angle that CA extended line is constituted, the angle of the angle of flare are 2.2 ° to 3.4 °.
7. heavy duty detergent according to claim 1 mixes gas centrifugal blower, it is characterized in that: the cover board (1) has air intake vent, enter
The area ratio in air port section (4) and mouthpiece portion (2b) air outlet section (5) is 1.1 to 1.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829710.8A CN110425157B (en) | 2019-09-04 | 2019-09-04 | Efficient gas mixing centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829710.8A CN110425157B (en) | 2019-09-04 | 2019-09-04 | Efficient gas mixing centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425157A true CN110425157A (en) | 2019-11-08 |
| CN110425157B CN110425157B (en) | 2023-12-15 |
Family
ID=68418732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910829710.8A Active CN110425157B (en) | 2019-09-04 | 2019-09-04 | Efficient gas mixing centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110425157B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241508A (en) * | 2023-05-12 | 2023-06-09 | 潍柴动力股份有限公司 | Air outlet pipe of air compressor, air compressor and engine |
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| CN108612674A (en) * | 2018-03-22 | 2018-10-02 | 海信科龙电器股份有限公司 | A kind of centrifugal blower and air conditioner |
| CN109973438A (en) * | 2019-04-24 | 2019-07-05 | 宁波方太厨具有限公司 | A kind of centrifugal blower volute |
| CN109989926A (en) * | 2019-03-28 | 2019-07-09 | 宁波纽新克电机股份有限公司 | A kind of efficient guarantor's runner centrifugal blower |
-
2019
- 2019-09-04 CN CN201910829710.8A patent/CN110425157B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6254336B1 (en) * | 1998-01-20 | 2001-07-03 | Lg Electronics, Inc. | Sirocco fan having an inclined cutoff |
| US20140321968A1 (en) * | 2013-04-29 | 2014-10-30 | Airbus Helicopters Deutschland GmbH | Blade rotary assembly with aerodynamic outer toroid spoiler for a shrouded propulsion rotary assembly |
| CN104454648A (en) * | 2013-09-24 | 2015-03-25 | 珠海格力电器股份有限公司 | Volute, low-noise centrifugal fan and air conditioner |
| CN104806571A (en) * | 2015-04-28 | 2015-07-29 | 湖南科技大学 | Efficient centrifugal air blower based on computational fluid dynamic simulation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241508A (en) * | 2023-05-12 | 2023-06-09 | 潍柴动力股份有限公司 | Air outlet pipe of air compressor, air compressor and engine |
| CN116241508B (en) * | 2023-05-12 | 2023-09-15 | 潍柴动力股份有限公司 | Air outlet pipe of air compressor, air compressor and engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110425157B (en) | 2023-12-15 |
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Address after: 315100 Zhejiang city of Ningbo province Yinzhou District Jingu Road No. 219 Applicant after: Ningbo Newark Electric Co.,Ltd. Address before: 315100 Zhejiang city of Ningbo province Yinzhou District Jingu Road No. 219 Applicant before: NINGBO NEWTHINK MOTOR CO.,LTD. |
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