CN114810660B - Environment-friendly energy-saving ventilation device - Google Patents
Environment-friendly energy-saving ventilation device Download PDFInfo
- Publication number
- CN114810660B CN114810660B CN202210394124.7A CN202210394124A CN114810660B CN 114810660 B CN114810660 B CN 114810660B CN 202210394124 A CN202210394124 A CN 202210394124A CN 114810660 B CN114810660 B CN 114810660B
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- Prior art keywords
- blade
- blades
- angle
- impeller
- group
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- 238000009423 ventilation Methods 0.000 title claims abstract description 17
- 239000000758 substrate Substances 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
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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
- 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
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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
- 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
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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
- 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 an environment-friendly energy-saving ventilation device, which comprises an impeller and a volute, wherein the impeller comprises a first blade group (1), a second blade group (2), a base plate (3) and a hub (4), the first blade group and the second blade group are respectively arranged on two axial sides of the base plate, and the base plate is connected with the radial periphery of the hub, and the environment-friendly energy-saving ventilation device is characterized in that: the first blade group (1) comprises a plurality of first blades (5), second blades (6) and third blades (7), and the plurality of first blades, the second blades and the third blades are sequentially staggered along the circumferential direction; radial length relationship: the first blade > the second blade > the third blade. The impeller can reduce turbulent flow at the outlet of the impeller, homogenize pressure distribution, reduce pressure loss and reduce noise.
Description
Technical Field
The invention relates to the technical field of ventilation or air exchange/heat exchange systems, in particular to an environment-friendly energy-saving ventilation/air exchange device, and particularly relates to a centrifugal fan for a ventilation or air exchange system.
Background
In the technical field of ventilation or heat exchange systems, the existing centrifugal fans with double-inlet and double-layer vane impellers have the technical problems of turbulent impeller outlet and large pressure loss.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a centrifugal fan for a ventilation or heat exchange system, which can reduce turbulent flow at an impeller outlet, homogenize pressure distribution and reduce pressure loss, so that the efficiency of the centrifugal fan can be improved; and simultaneously, the noise can be reduced.
In order to achieve the above object, the present invention provides the following technical solutions:
The utility model provides a centrifugal fan for ventilation or heat transfer system, it includes impeller, spiral case, the impeller is located the spiral case, the impeller rotates under the drive of motor, the spiral case has first air intake (S1), second air intake (S2), first air intake, the second air intake is located the axial both sides of spiral case respectively, the impeller includes first blade group (1), second blade group (2), base plate (3), wheel hub (4), first blade group, second blade group set up respectively in the axial both sides of base plate, the base plate is connected in the radial periphery of wheel hub, its characterized in that: the first blade group (1) comprises a plurality of first blades (5), second blades (6) and third blades (7), and the plurality of first blades, the second blades and the third blades are sequentially staggered along the circumferential direction; radial length relationship: the first blade > the second blade > the third blade.
Further, the axial height relationship: first blade > second blade = third blade.
Further, an angle a is formed between the first blade and the adjacent second blade, an angle b is formed between the second blade and the adjacent third blade, and an angle c is formed between the third blade and the adjacent first blade, wherein a is smaller than b and smaller than c.
Further, a+b.ltoreq.c.
Further, the second blade group (2) comprises a plurality of fourth blades (8) and fifth blades (9), and the fourth blades and the fifth blades are sequentially staggered along the circumferential direction; radial length relationship: the fourth blade is greater than the fifth blade.
Further, the axial height relationship: the fourth blade is greater than the fifth blade.
Further, an angle a is formed between the fourth blade and the fifth blade adjacent to one side, and an angle a is formed between the fourth blade and the fifth blade adjacent to the other side.
Further, an included angle=an included angle is formed between a projection line of the first blade on the substrate and a projection line of the fourth blade on the substrate.
Further, the plurality of communication holes (10) are arranged on the substrate at one side of the first blade and/or the fourth blade, and the plurality of communication holes (10) are arranged along the radial direction.
Further, the diameter relation: the first air inlet is more than or equal to the second air inlet; the blades of the first blade group and the second blade group are straight blades or arc blades.
Further, the apertures of the plurality of communication holes 10 gradually decrease from the radially inner side to the radially outer side on the same radial direction line, and the pitch gradually decreases.
The invention provides a centrifugal fan for a ventilation or heat exchange system, which can reduce turbulent flow of an impeller outlet, homogenize pressure distribution and reduce pressure loss, so that the efficiency of the centrifugal fan can be improved; and simultaneously, the noise can be reduced.
Drawings
FIG. 1 is a front view of an impeller structure of the present invention;
FIG. 2 is a side view of the impeller structure of the present invention;
Fig. 3 is a side view of the impeller structure of the present invention.
In the figure: a first blade group 1, a second blade group 2, a base plate 3, a hub 4, a first blade 5, a second blade 6, a third blade 7, a fourth blade 8, a fifth blade 9, and a communication hole 10.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, a centrifugal fan for a ventilation or heat exchange system comprises an impeller and a volute, wherein the impeller is positioned in the volute, the impeller rotates under the driving of a motor, the volute is provided with a first air inlet S1 and a second air inlet S2, the first air inlet S1 and the second air inlet S2 are respectively positioned at two axial sides of the volute, the impeller comprises a first blade group 1, a second blade group 2, a base plate 3 and a hub 4, the first blade group 1 and the second blade group 2 are respectively arranged at two axial sides of the base plate 3, and the base plate 3 is connected with the radial periphery of the hub 4.
The first blade group 1 comprises a plurality of first blades 5, second blades 6 and third blades 7, and the plurality of first blades 5, second blades 6 and third blades 7 are sequentially staggered along the circumferential direction; radial length relationship: first blade 5 > second blade 6> third blade 7, axial height relationship: first blade 5 (h 2) > second blade 6=third blade 7 (h 1). The first blade 5 and the adjacent second blade 6 have an angle a, the second blade 6 and the adjacent third blade 7 have an angle b, the third blade 7 and the adjacent first blade 5 have an angle c, a < b < c, preferably a=5-15 °, b=8-18 °, a+b is less than or equal to c. Through the impeller structural design, the turbulence of an impeller outlet can be reduced, the pressure distribution is homogenized, the pressure loss is reduced, and meanwhile, the noise can be reduced.
The second blade group 2 comprises a plurality of fourth blades 8 and fifth blades 9, and the fourth blades 8 and the fifth blades 9 are sequentially staggered along the circumferential direction; radial length relationship: fourth blade 8 > fifth blade 9, axial height relationship: fourth blade 8 (h 2) > fifth blade 9 (h 1). The fourth vane 8 has an angle a with the fifth vane 9 adjacent to one side and the fourth vane 8 has an angle a with the fifth vane 9 adjacent to the other side. Through the impeller structural design, the turbulence of an impeller outlet can be reduced, the pressure distribution is homogenized, the pressure loss is reduced, and meanwhile, the noise can be reduced.
The projection line of the first blade 5 on the substrate 3 and the projection line of the fourth blade 8 on the substrate form an included angle, the included angle = angle a; a plurality of communication holes 10 are provided on the base plate 3 at one side of the first blade 5 and/or the fourth blade 8, and the plurality of communication holes 10 are arranged in a radial direction and are provided immediately adjacent to one side of the first blade 5 and/or the fourth blade 8. The arrangement of the communication hole can further reduce the turbulence of the impeller outlet, homogenize the pressure distribution, reduce the pressure loss and reduce the noise.
For different air inlet needs, diameter relation: the first air inlet S1 is larger than or equal to the second air inlet S2, and different air inlet sizes can be set according to different air inlet working conditions, and the same air inlet size is also required under certain working conditions. The blades of the first blade group 1 and the second blade group 2 are straight blades or arc blades.
Further, the apertures of the plurality of communication holes 10 gradually decrease from the radially inner side to the radially outer side on the same radial direction line, and the pitch gradually decreases. Through the design of the aperture and the gap, the pressure loss can be further and better reduced, the efficiency of the centrifugal fan is improved, and the noise is reduced.
The invention provides a centrifugal fan for a ventilation or heat exchange system, which can reduce turbulent flow of an impeller outlet, homogenize pressure distribution and reduce pressure loss, so that the efficiency of the centrifugal fan can be improved; and simultaneously, the noise can be reduced.
The above-described embodiments are illustrative of the present invention and are not intended to be limiting, and it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.
Claims (4)
1. The utility model provides an environmental protection and energy saving type ventilation/air exchange device, it includes centrifugal fan, it includes impeller, the spiral case, the impeller is located the spiral case, the impeller rotates under the drive of motor, the spiral case has first air intake (S1), second air intake (S2), first air intake, the second air intake is located the axial both sides of spiral case respectively, the impeller includes first blade group (1), second blade group (2), base plate (3), wheel hub (4), first blade group, second blade group sets up respectively in the axial both sides of base plate, the base plate is connected in the radial periphery of wheel hub, first blade group (1) includes a plurality of first blades (5), second blade (6), third blade (7), a plurality of first blades, second blade, third blade are crisscross along circumference in proper order; radial length relationship: the first blade is greater than the second blade and greater than the third blade;
The method is characterized in that: axial height relationship: first blade > second blade = third blade; an angle a is formed between the first blade and the adjacent second blade, an angle b is formed between the second blade and the adjacent third blade, an angle c is formed between the third blade and the adjacent first blade, a is smaller than b and smaller than c, and a+b is smaller than or equal to c;
the second blade group (2) comprises a plurality of fourth blades (8) and fifth blades (9), and the fourth blades and the fifth blades are sequentially staggered along the circumferential direction; radial length relationship: the fourth blade is greater than the fifth blade; axial height relationship: the fourth blade is greater than the fifth blade;
An included angle is formed between the projection line of the first blade on the substrate and the projection line of the fourth blade on the substrate, and the included angle = angle a; a plurality of communication holes (10) are formed in the base plate (3) and located on one side of the first blade and one side of the fourth blade, and the plurality of communication holes (10) are arranged in the radial direction.
2. An environmentally friendly energy efficient ventilation/air exchange device according to claim 1 wherein said fourth vane is at an angle a to the fifth vane adjacent one side and also at an angle a to the fifth vane adjacent the other side.
3. An environmentally friendly and energy efficient ventilation/air exchange device according to claim 2, wherein the apertures of the plurality of communication holes (10) are gradually reduced from the radially inner side to the radially outer side in the same radial direction line, and the pitch is gradually reduced.
4. An environmentally friendly energy efficient ventilation/air exchange device as claimed in claim 1, wherein the diameter relationship: the first air inlet is more than or equal to the second air inlet; the blades of the first blade group and the second blade group are straight blades or arc blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394124.7A CN114810660B (en) | 2022-04-15 | 2022-04-15 | Environment-friendly energy-saving ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394124.7A CN114810660B (en) | 2022-04-15 | 2022-04-15 | Environment-friendly energy-saving ventilation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114810660A CN114810660A (en) | 2022-07-29 |
| CN114810660B true CN114810660B (en) | 2024-04-30 |
Family
ID=82537585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210394124.7A Active CN114810660B (en) | 2022-04-15 | 2022-04-15 | Environment-friendly energy-saving ventilation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114810660B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012011305U1 (en) * | 2012-11-22 | 2012-12-05 | Asia Vital Components (China) Co., Ltd. | Paddle wheel with several blade groups and centrifugal fan |
| CN204458530U (en) * | 2014-12-29 | 2015-07-08 | 宁波方太厨具有限公司 | The adjustable centrifugal blower of a kind of intake grill |
| CN206207517U (en) * | 2016-11-11 | 2017-05-31 | 宁波方太厨具有限公司 | A kind of noise reduction impeller and application have the range hood of the impeller |
| KR20180039548A (en) * | 2016-10-10 | 2018-04-18 | 소애련 | Centrifugal impeller having backward blades using dual gradient sectional shape type |
| JP2018071551A (en) * | 2017-12-27 | 2018-05-10 | 日本電産株式会社 | Centrifugal fan |
| CN108223443A (en) * | 2018-04-04 | 2018-06-29 | 中山大洋电机股份有限公司 | A kind of wind wheel and its air blower of application |
| CN108457898A (en) * | 2018-05-01 | 2018-08-28 | 赵浩浩 | A kind of blade wheel structure for compressor |
| CN209586783U (en) * | 2019-02-13 | 2019-11-05 | 安徽欧斯福科技有限公司 | A kind of dryer of novel impeller structure |
| CN110439855A (en) * | 2019-09-04 | 2019-11-12 | 盐城工业职业技术学院 | A kind of centrifugal blower applied to air conditioning for automobiles ventilating system |
| CN112096664A (en) * | 2020-09-28 | 2020-12-18 | 江西省子轩科技有限公司 | Fan for ventilation system |
| CN112610525A (en) * | 2020-12-09 | 2021-04-06 | 江苏美的清洁电器股份有限公司 | Fan for dust collector and dust collector |
| CN112901552A (en) * | 2019-12-03 | 2021-06-04 | 曼恩能源方案有限公司 | Radial compressor impeller |
| CN113833675A (en) * | 2021-09-16 | 2021-12-24 | 势加透博洁净动力如皋有限公司 | Impeller and air compressor with same |
| JP2022019127A (en) * | 2020-07-17 | 2022-01-27 | 日本電産コパル電子株式会社 | Centrifugal fan and blower using the same |
| CN215949873U (en) * | 2021-05-28 | 2022-03-04 | 青岛海尔智能技术研发有限公司 | Centrifugal fan and range hood with same |
-
2022
- 2022-04-15 CN CN202210394124.7A patent/CN114810660B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012011305U1 (en) * | 2012-11-22 | 2012-12-05 | Asia Vital Components (China) Co., Ltd. | Paddle wheel with several blade groups and centrifugal fan |
| CN204458530U (en) * | 2014-12-29 | 2015-07-08 | 宁波方太厨具有限公司 | The adjustable centrifugal blower of a kind of intake grill |
| KR20180039548A (en) * | 2016-10-10 | 2018-04-18 | 소애련 | Centrifugal impeller having backward blades using dual gradient sectional shape type |
| CN206207517U (en) * | 2016-11-11 | 2017-05-31 | 宁波方太厨具有限公司 | A kind of noise reduction impeller and application have the range hood of the impeller |
| JP2018071551A (en) * | 2017-12-27 | 2018-05-10 | 日本電産株式会社 | Centrifugal fan |
| CN108223443A (en) * | 2018-04-04 | 2018-06-29 | 中山大洋电机股份有限公司 | A kind of wind wheel and its air blower of application |
| CN108457898A (en) * | 2018-05-01 | 2018-08-28 | 赵浩浩 | A kind of blade wheel structure for compressor |
| CN209586783U (en) * | 2019-02-13 | 2019-11-05 | 安徽欧斯福科技有限公司 | A kind of dryer of novel impeller structure |
| CN110439855A (en) * | 2019-09-04 | 2019-11-12 | 盐城工业职业技术学院 | A kind of centrifugal blower applied to air conditioning for automobiles ventilating system |
| CN112901552A (en) * | 2019-12-03 | 2021-06-04 | 曼恩能源方案有限公司 | Radial compressor impeller |
| JP2022019127A (en) * | 2020-07-17 | 2022-01-27 | 日本電産コパル電子株式会社 | Centrifugal fan and blower using the same |
| CN112096664A (en) * | 2020-09-28 | 2020-12-18 | 江西省子轩科技有限公司 | Fan for ventilation system |
| CN112610525A (en) * | 2020-12-09 | 2021-04-06 | 江苏美的清洁电器股份有限公司 | Fan for dust collector and dust collector |
| CN215949873U (en) * | 2021-05-28 | 2022-03-04 | 青岛海尔智能技术研发有限公司 | Centrifugal fan and range hood with same |
| CN113833675A (en) * | 2021-09-16 | 2021-12-24 | 势加透博洁净动力如皋有限公司 | Impeller and air compressor with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114810660A (en) | 2022-07-29 |
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