CN109058130B - Exhaust fan based on air reposition of redundant personnel noise reduction - Google Patents
Exhaust fan based on air reposition of redundant personnel noise reduction Download PDFInfo
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- CN109058130B CN109058130B CN201810877341.5A CN201810877341A CN109058130B CN 109058130 B CN109058130 B CN 109058130B CN 201810877341 A CN201810877341 A CN 201810877341A CN 109058130 B CN109058130 B CN 109058130B
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- blade
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- blade ring
- ring
- sound
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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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
- F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
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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
- F04D29/26—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
- F04D29/66—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
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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
Abstract
The invention discloses an exhaust fan for reducing noise based on air diversion, which structurally comprises an integrated air frame, a panel and wind wheel blades, wherein the integrated air frame and the panel are buckled and connected to form a rectangular structure and an inner cavity; the volume of the fan blades delivered by the airflow at the two ends is small, so that the delivered sound is low, the sound is further reduced through silencing, and then the exhaust fan realizes that people only feel the sound of part of the airflow impacting the fan blades while exhausting air strongly, thereby achieving the purpose of reducing part of noise.
Description
Technical Field
The invention relates to the field of bathroom accessories, in particular to an exhaust fan capable of reducing noise based on air shunting.
Background
The ventilation of the toilet is important, and in relation to health and hygiene, people can eliminate the air with peculiar smell by the exhaust fan to replace the healthy and fresh air.
The exhaust sound of the exhaust fan in the prior art is a normal phenomenon, the indoor sound environment is influenced without repair, and a large part of noise of the existing exhaust fan is noise generated by periodically impacting air by protruding parts such as fan blades, rotor blades and the like when a motor rotates; because too far away has increased the resistance of airing exhaust, influences the effect of airing exhaust, the biggest function is exactly to discharge the foul smell when using the air discharge fan in bathroom, generally is a little less than the closestool for reaching the effect of airing exhaust, also makes the air discharge fan air outlet near people, and the noise that people heard is comparatively loud.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide an exhaust fan based on air shunting and noise reduction, so that the problem that the exhaust sound of the exhaust fan is large and is a normal phenomenon, the indoor sound environment is influenced without repair is solved, and a large part of noise of the existing exhaust fan is the noise generated by periodically impacting air by protruding parts such as fan blades, rotor blades and the like when a motor rotates; because too far away has increased the resistance of airing exhaust, influences the effect of airing exhaust, the biggest function is exactly to discharge the foul smell when using the air discharge fan in bathroom, generally is a little less than the closestool for reaching the effect of airing exhaust, also makes the air discharge fan air outlet closer to people, the comparatively loud problem of noise that people heard.
The invention is realized by adopting the following technical scheme: an exhaust fan based on air diversion and noise reduction structurally comprises an integrated air frame, a panel and wind wheel blades, wherein the integrated air frame and the panel are fastened and form a rectangular structure and form an inner cavity, a motor is arranged in the middle of the inner cavity formed by the integrated air frame and the panel, the motor is connected with the wind wheel blades through a shaft, the wind wheel blades are of a cover body structure, a round hole is formed in the middle of the panel, one end, in an opening shape, of each wind wheel blade is embedded in the round hole in the middle of the panel, the integrated air frame is provided with an air outlet, the air outlet is located at one end of the side face of the integrated air frame, the air outlet is vertically adjacent to the wind wheel blades, each wind wheel blade comprises a blade ring, blades and a connecting shaft cover, the blades are provided with more than 3 blades, the blade inclination angles are distributed on the blade ring in a circular structure, the blade ring is provided with a group, the blade ring consists of a first-position blade ring and a second-position blade ring, the first-position blade ring and the second-position blade ring have the same structure, the first-position blade ring and the second-position blade ring are parallel and form an up-down structure, the side surface of the second-position blade ring far away from the first-position blade ring is fixedly connected with the inner ring surface of the connecting shaft cover, the first-position blade ring consists of a miniature first-position blade ring, miniature blades and a miniature second-position blade ring, the miniature first-position blade ring and the miniature second-position blade ring have the same structure, the miniature first-position blade ring and the miniature second-position blade ring are parallel and form an up-down structure, the left end of the blade is inclined at an angle and is distributed on the miniature second-position blade ring of the first-position blade ring in a circular structure, the right ends of the blades are inclined at an angle and are distributed on a first-position blade ring of a second-position blade ring in a circular structure, more than 3 micro blades are arranged, the miniature blades are distributed on the inner side surfaces of the miniature one-position blade ring and the miniature two-position blade ring in a circular structure at the inclination angles.
Further preferably, the outer ring sides of the first-position vane ring and the second-position vane ring are respectively connected with an annular inclined plate in a gluing mode, the annular inclined plates are inclined, the annular inclined plates are located at the outer ends of the miniature blades, and the annular inclined plates are located at the two ends of the blades.
Further preferably, the structure of the blade is the same as that of the miniature blade, the volume of the blade is larger than that of the miniature blade, the miniature blade is connected with a sound-absorbing plate in an adhesive mode, and the sound-absorbing plate is located in the middle of the outer end of the miniature blade.
Preferably, the sound-absorbing plate is of a wave structure, the upper end of the sound-absorbing plate is provided with sound-absorbing holes, more than 3 pairs of sound-absorbing plates are arranged, and the upper end and the lower end of each sound-absorbing plate are glued on the surfaces of the micro blades.
Further preferably, the integrated wind frame is communicated with the blades of the wind wheel.
Further preferably, the silencing holes are rounded rectangles.
Advantageous effects
The exhaust fan realizes indoor and outdoor air exchange by driving fan blades to rotate to drive airflow through the motor, the exhaust fan is arranged at a designated position, the motor operates to drive the fan blades to rotate after a power supply is started, and the rotation of the fan blades improves the gas pressure and discharges the gas; the operation principle of the wind wheel fan blade is the same as that of the first-position blade ring and the second-position blade ring, the high-speed rotation is utilized to accelerate and change the flow direction of the gas, the gas enters the blades from the axial direction, namely the gas changes into the radial direction when flowing through the blades and then is discharged from the blades; the gas that the exhaust in-process becomes radial flow divides the partlyry to flow, the middle part is to the drifting of blade department, and the air current that closes on the bling is flowed to the bling from the both ends of blade respectively, the air current is gaseous through the abatvoix when the air current is flowed in the bling, high-pressure gas meets first abatvoix promptly, the air current just once of expansion here, consume partly energy, after the secondary expansion again, its pressure of high-pressure gas, speed and density, it is few with the outside air to have fallen, then reach the function of making an uproar, then the air current is discharged from the bling and is drawn close to in the middle part under the assistance of annular swash plate, then the gas that follows the blade department through the amortization is discharged from gas transmission pipe.
Compared with the prior art, the invention has the beneficial effects that: air flow collided by fan blades of the wind wheel and air is delivered in three parts, wherein two parts of the delivered air flow are subjected to silencing treatment in the delivery process and then are delivered out of a room along with the main air flow in the middle, namely the air flow in the middle does not change, and the air flows at two ends are delivered out along with the air flow in the middle through silencing; the volume of the fan blades delivered by the airflow at the two ends is small, so that the delivered sound is low, the sound is further reduced through silencing, and then the exhaust fan realizes that people only feel the sound of part of the airflow impacting the fan blades while exhausting air strongly, thereby achieving the purpose of reducing part of noise.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 shows a schematic structural diagram of an exhaust fan for reducing noise based on air diversion according to the present invention.
Fig. 2 shows a schematic view of the structure of a wind turbine blade according to the invention.
FIG. 3 shows a schematic view of the structure of the bling of the invention.
FIG. 4 shows a schematic view of a single-bit bling of the invention.
Fig. 5 shows a schematic structural diagram of the connection and installation of the sound-absorbing plate and the annular inclined plate.
Fig. 6 shows a schematic view of the structure of the acoustical panel of the invention.
In the figure: the wind-proof structure comprises an integrated wind frame 1, a panel 2, wind wheel fan blades 3, an air outlet 10, blade rings 30, blades 31, a connecting shaft cover 32, a first-position blade ring 300, a second-position blade ring 301, a miniature first-position blade ring 400, miniature blades 401, a miniature second-position blade ring 402, an annular inclined plate 60, a sound-deadening hole 500 and a sound-deadening plate 50.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution of an exhaust fan for reducing noise based on air diversion: the structure of the wind power generation device comprises an integrated wind frame 1, a panel 2 and wind wheel blades 3, wherein the integrated wind frame 1 is buckled with the panel 2, the two wind frame and the panel are formed into a rectangular structure and form an inner cavity, a motor is arranged in the middle of the inner cavity formed by the integrated wind frame 1 and the panel 2, the motor is connected with the shaft of the wind wheel blades 3, the wind wheel blades 3 are of a cover body structure, a round hole is arranged in the middle of the panel 2, one end of the wind wheel blades 3 in an open shape is embedded in the round hole in the middle of the panel 2, the integrated wind frame 1 is provided with an air outlet 10, the air outlet 10 is positioned at one end of the side surface of the integrated wind frame 1, the air outlet 10 is vertically adjacent to the wind wheel blades 3, the wind wheel blades 3 are composed of a blade ring 30, blades 31 and a connecting shaft cover 32, the blades 31 are provided with more than 3, the, the two ends of the blade 31 are fixedly connected to the inner side surface of the blade ring 30, the blade ring 30 is composed of a first-position blade ring 300 and a second-position blade ring 301, the first-position blade ring 300 and the second-position blade ring 301 are identical in structure, the first-position blade ring 300 and the second-position blade ring 301 are parallel and form an up-down structure, the side surface of the second-position blade ring 301, far away from the first-position blade ring 300, is fixedly connected with the inner side ring surface of the connecting shaft cover 32, the first-position blade ring 300 is composed of a miniature first-position blade ring 400, a miniature blade 401 and a miniature second-position blade ring 402, the miniature first-position blade ring 400 and the miniature second-position blade ring 402 are identical in structure, the miniature first-position blade ring 400 and the miniature second-position blade ring 402 are parallel and form an up-down structure, the left end of the blade 31 inclines at an angle of 45 degrees and is distributed on the miniature second-position blade ring 402 of the first-, the miniature blade 401 is provided with more than 3 blades, the miniature blade 401 inclines at an angle of 45 degrees and is distributed on the inner side surfaces of a miniature one-position blade ring 400 and a miniature two-position blade ring 402 in a circular structure, the outer ring sides of the one-position blade ring 300 and the two-position blade ring 301 are respectively spliced with an annular inclined plate 60, the annular inclined plate 60 inclines at an angle of 45 degrees, the annular inclined plate 60 is positioned at the outer end of the miniature blade 401, the annular inclined plates 60 are positioned at the two ends of the blade 31, the blade 31 and the miniature blade 401 have the same structure, the volume of the blade 31 is larger than that of the miniature blade 401, the miniature blade 401 is spliced with a sound-absorbing plate 50, the sound-absorbing plate 50 is positioned in the middle of the outer end of the miniature blade 401, the sound-absorbing plate 50 is in a wave structure, the upper end of the sound-absorbing hole 500 is arranged at the upper end of the sound-absorbing plate, the connecting shaft cover 32 is tightly connected with the motor, so that noise caused by looseness generated by operation of the connecting shaft cover and the motor is prevented.
The exhaust fan drives blades to rotate through a motor to drive airflow to realize indoor and outdoor air exchange, the exhaust fan is arranged at a specified position, the motor operates to drive the blades 3 of the wind wheel to rotate after a power supply is started, and the rotation of the blades 3 of the wind wheel improves the gas pressure and discharges the gas; the operation principle of the wind wheel blade 3 is the same as that of the first-position blade ring 300 and the second-position blade ring 301, the high-speed rotation is utilized to accelerate the gas and change the flow direction, the gas enters the blade 31 from the axial direction, namely the gas changes into the radial direction when flowing through the blade 31 and then is discharged from the blade 31; the gas that becomes radial flow in the exhaust process is divided into the flow of three parts, the middle part is flowed towards blade 31, and the air current that closes on bling 30 is flowed into in the bling 30 from the both ends of blade 31 respectively, gas is through abatvoix 50 when the air current is flowed in the bling 30, and high-pressure gas meets first abatvoix 50, and the air current just expands once here, consumes a part of energy, after the secondary expansion, its pressure, speed and density of high-pressure gas have been reduced to and have been little with the outside air, then reach the function of making an uproar, then the air current is discharged from the bling 30 and is drawn close to the middle part under the supplementary down stream of annular swash plate 60, then the gas that passes through the amortization follows the gas of blade 31 department and is discharged from the gas conveying pipe.
Compared with the prior art, the invention has the technical progress that: the airflow impacted by the wind wheel fan blades 3 and the air is delivered in three parts, wherein two parts of the delivered airflow are subjected to silencing treatment in the delivery process, and then are delivered out of the room along with the main airflow in the middle, namely the airflow in the middle does not change, and the airflows at two ends are delivered out along with the airflow in the middle through silencing; the volume of the fan blades delivered by the airflow at the two ends is small, so that the delivered sound is low, the sound is further reduced through silencing, and then the exhaust fan realizes that people only feel the sound of part of the airflow impacting the fan blades while exhausting air strongly, thereby achieving the purpose of reducing part of noise.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides an air discharge fan based on air reposition of redundant personnel noise reduction, its structure includes integrative wind frame (1), panel (2), wind wheel flabellum (3), integrative wind frame (1) and panel (2) lock joint, the two is constituteed for the rectangle structure and is formed the inner chamber, the inner chamber mid-mounting that integrative wind frame (1) and panel (2) formed has the motor, motor and wind wheel flabellum (3) hub connection, wind wheel flabellum (3) are cover body structure, panel (2) middle part is equipped with the round hole, wind wheel flabellum (3) are the one end of opening form and inlay the round hole at panel (2) middle part, integrative wind frame (1) is equipped with air outlet (10), air outlet (10) are located the one end of integrative wind frame (1) side, air outlet (10) are perpendicular form adjacent, its characterized in that with wind wheel flabellum (3):
the wind wheel fan blade (3) is composed of a blade ring (30), blades (31) and a connecting shaft cover (32), more than 3 blades (31) are arranged, the blades (31) incline at an angle of 45 degrees and are distributed on the blade ring (30) in a circular structure, a group of blade rings (30) is arranged, and two ends of each blade (31) are fixedly connected to the inner side surface of the blade ring (30);
the blade ring (30) consists of a first-position blade ring (300) and a second-position blade ring (301), the first-position blade ring (300) and the second-position blade ring (301) have the same structure, the first-position blade ring (300) is parallel to the second-position blade ring (301), the first-position blade ring and the second-position blade ring form an up-down structure, and the side surface of the second-position blade ring (301), which is far away from the first-position blade ring (300), is fixedly connected with the inner side ring surface of the connecting shaft cover (32);
one-position blade ring (300) comprises miniature one-position blade ring (400), miniature blade (401), miniature two-position blade ring (402), miniature one-position blade ring (400) is the same with miniature two-position blade ring (402) structure, miniature one-position blade ring (400) is parallel with miniature two-position blade ring (402), and the two constitution is upper and lower structure, blade (31) left end slope 45 degrees angle and be circular structure and distribute on miniature two-position blade ring (402) of one-position blade ring (300), blade (31) right-hand member slope 45 degrees angle and be circular structure and distribute on one-position blade ring (400) of two-position blade ring (301), miniature blade (401) are equipped with more than 3, miniature blade (401) slope 45 degrees angle and be circular structure and distribute at the medial surface of miniature one-position blade ring (400) and miniature two-position blade ring (402).
2. The exhaust fan based on air diversion noise reduction of claim 1, characterized in that: the outer ring side of one-position vane ring (300), two-position vane ring (301) all splices and has annular swash plate (60), annular swash plate (60) slope 45 degrees, annular swash plate (60) are located the outer end department of miniature blade (401), annular swash plate (60) are located the both ends department of blade (31).
3. The exhaust fan based on air diversion noise reduction of claim 1, characterized in that: the structure of the blade (31) is the same as that of the miniature blade (401), the volume of the blade (31) is larger than that of the miniature blade (401), the miniature blade (401) is glued with a sound-absorbing plate (50), and the sound-absorbing plate (50) is positioned in the middle of the outer end of the miniature blade (401).
4. The exhaust fan based on air diversion noise reduction of claim 3, characterized in that: the sound-absorbing plate (50) is of a wave structure, sound-absorbing holes (500) are formed in the upper end of the sound-absorbing plate (50), more than 3 pairs of sound-absorbing plates (50) are arranged, and the upper end and the lower end of each sound-absorbing plate (50) are glued to the surfaces of the micro blades (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877341.5A CN109058130B (en) | 2018-08-03 | 2018-08-03 | Exhaust fan based on air reposition of redundant personnel noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810877341.5A CN109058130B (en) | 2018-08-03 | 2018-08-03 | Exhaust fan based on air reposition of redundant personnel noise reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109058130A CN109058130A (en) | 2018-12-21 |
| CN109058130B true CN109058130B (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810877341.5A Active CN109058130B (en) | 2018-08-03 | 2018-08-03 | Exhaust fan based on air reposition of redundant personnel noise reduction |
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| CN (1) | CN109058130B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101140708B1 (en) * | 2004-12-31 | 2012-07-02 | 삼성전자주식회사 | Blowing Apparatus for Air Conditioner |
| CN101520684B (en) * | 2009-01-13 | 2011-05-18 | 简伟松 | Heat radiator for notebook computer |
| US20130011247A1 (en) * | 2011-07-07 | 2013-01-10 | Jin-Hsun Liu | Centrifugal fan with a multistage impeller |
| US10125790B2 (en) * | 2014-07-24 | 2018-11-13 | Mahle International Gmbh | Centrifugal fan with reduced motor cooling noise |
| CN107339263A (en) * | 2017-03-15 | 2017-11-10 | 宁波方太厨具有限公司 | A kind of auxiliary denoising device for cooking-fume exhauster blower system |
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| CN109058130A (en) | 2018-12-21 |
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Effective date of registration: 20200527 Address after: 312000 No. 1251 Wenchang Road, Lanting Street, Keqiao District, Shaoxing City, Zhejiang Province Applicant after: Shaoxing Huirong Zhenhe New Energy Technology Co.,Ltd. Address before: 518000 Guangdong Shenzhen Luohu District Gui Yuan Street Baoan road 3042 21 Tianlou 21 Applicant before: SHENGSHI YAOLAN (SHENZHEN) TECHNOLOGY Co.,Ltd. |
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Denomination of invention: An exhaust fan for reducing noise based on air diversion Effective date of registration: 20211228 Granted publication date: 20200703 Pledgee: Zhejiang Shaoxing Ruifeng Rural Commercial Bank Co.,Ltd. Lizhu sub branch Pledgor: Shaoxing Huirong Zhenhe New Energy Technology Co.,Ltd. Registration number: Y2021330002679 |
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Date of cancellation: 20220628 Granted publication date: 20200703 Pledgee: Zhejiang Shaoxing Ruifeng Rural Commercial Bank Co.,Ltd. Lizhu sub branch Pledgor: Shaoxing Huirong Zhenhe New Energy Technology Co.,Ltd. Registration number: Y2021330002679 |
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