CN116201753B - Axial flow fan with active noise reduction function - Google Patents
Axial flow fan with active noise reduction function Download PDFInfo
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- CN116201753B CN116201753B CN202310005213.2A CN202310005213A CN116201753B CN 116201753 B CN116201753 B CN 116201753B CN 202310005213 A CN202310005213 A CN 202310005213A CN 116201753 B CN116201753 B CN 116201753B
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- air duct
- bolt
- axial flow
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- 230000009467 reduction Effects 0.000 title claims abstract description 9
- 229920000742 Cotton Polymers 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims description 48
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000035939 shock Effects 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000013016 damping Methods 0.000 abstract description 19
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 17
- 239000000835 fiber Substances 0.000 description 17
- 238000009423 ventilation Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- 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
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- 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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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 axial flow fan with an active noise reduction function, which belongs to the technical field of axial flow fans, and comprises an air duct, wherein a driver and a wind wheel are arranged in the air duct, sound insulation cotton is arranged on the inner wall of the air duct, a filter screen is arranged at the air inlet end of the air duct, a flange and a damping ring are arranged at the two ends of the outer side of the air duct, the flange is arranged on the damping ring, the inner side wall surface of the flange is not contacted with the air duct, the flange is used for connecting an external bracket or an external ventilating duct by the air duct, and the sound insulation cotton is used for absorbing noise generated during the operation of the axial flow fan, so that the noise reduction of the axial flow fan is realized, and the influence on the outside during the operation of the axial flow fan is reduced. The damping rings are arranged on the air duct, and when vibration is generated, the damping rings realize damping and buffering between the axial flow fan and the external support or the external ventilating duct, and no matter the vibration comes from the axial flow fan or other external equipment.
Description
Technical Field
The invention relates to the technical field of axial flow fans, in particular to an axial flow fan with an active noise reduction function.
Background
Axial fans are called "axial fans" because air flows parallel to the fan axis and are typically used in applications where flow requirements are high and pressure requirements are low. The axial fan can produce great noise when working, influences the periphery of service environment easily, causes certain puzzlement to people.
The existing axial flow fan cannot be well applied to the textile industry, in the textile manufacturing industry with a severe ventilation environment, fiber dust is difficult to capture, so that the fiber dust easily passes through a filter screen and enters into an air cylinder of the axial flow fan, under the action of air flow, the fiber dust moves to a motor of the axial flow fan and is attracted by an electric field, the fiber dust can block a vent hole of the motor, the internal temperature of the motor is increased, the motor is burnt, and the operation loss is directly caused.
Disclosure of Invention
The invention aims to provide an axial flow fan with an active noise reduction function so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: an axial flow fan with an active noise reduction function comprises an air duct, wherein damping rings are sleeved on the outer sides of two ends of the air duct, a flange is arranged on one side of each damping ring, a filter screen is arranged at the air inlet end of the air duct, sound insulation cotton is arranged on the inner wall of the air duct, a driver is arranged in the air duct, a wind wheel is arranged at the central axis of the air duct, the output end of the driver is connected with the wind wheel, and the driver is connected with a control system;
The flange enables the axial flow fan to be mounted on an external support or an external ventilation duct.
The filter screen consists of a plurality of fixing rings with different diameters and a plurality of adsorption plates, the fixing rings are coaxial, the adsorption plates are arranged on the fixing rings, one end of each adsorption plate is fixed on the inner wall of the air duct, and the other end of each adsorption plate is provided with a piezoelectric plate;
The middle part of dryer is installed the support, the driver is installed in the middle part position of support, and the output of driver is connected with the drive shaft, the one end of drive shaft rotates and is connected with the pedestal, the pedestal is fixed in the dryer, is provided with the pressure swing axle on the drive shaft, pressure swing axle and piezoelectricity board sliding connection, and the one end of pressure swing axle is provided with the water conservancy diversion awl, water conservancy diversion awl outer fringe and adsorption plate front end contact. The pedestal supports the driving shaft, and the diversion cone diverts air to prevent the air from flowing through the piezoelectric plate. The adsorption plates divide the air flow, so that the air passes between the two adsorption plates, and the adsorption plates adsorb fibers, dust and the like in the air, thereby preventing the fibers, dust and the like from falling on the driving machine. The driving machine is an electric motor.
The cross section of the adsorption plate is isosceles triangle, and one end of the piezoelectric plate is spherical; annular corrugated pressure regulating grooves are formed in the pressure changing shaft, and one spherical end of the piezoelectric plate is located in the pressure regulating grooves. The adsorption plate is formed by splicing two isosceles right triangular posts, an insulating layer is attached between the two triangular posts, and the inclined plane of the triangular posts is the inclined plane of the adsorption plate. The piezoelectric plate is made of piezoelectric materials, and the spherical end of the piezoelectric plate is positioned in the pressure regulating groove. Through setting up the position setting to piezoelectric plate position and adjusting the position setting of pressure regulating groove peak trough, when the pressure swing axle rotated, the position of adjacent two spherical ends of piezoelectric plate in the pressure regulating groove was not the same, and one is located the crest department of pressure regulating groove, and is located the trough department of pressure regulating groove, and along with the continuous rotation of pressure swing axle, the spherical end of same piezoelectric plate constantly moves from the crest to the trough, moves from the trough to the crest again, and the spherical end of piezoelectric plate is located the position of crest and trough when, and the bending direction of piezoelectric plate is opposite, and the voltage direction of piezoelectric plate constantly changes promptly. When the driving shaft drives the variable-voltage shaft to rotate, the spherical end of the piezoelectric plate swings under the guiding of the corrugated pressure regulating groove, the swing direction of the spherical end is the axial direction of the variable-voltage shaft, when the spherical end of the piezoelectric plate swings, the piezoelectric plate bends and generates potential difference, two end faces of the potential difference generated by the piezoelectric plate are respectively and electrically connected with two inclined faces of the adsorption plate, and when the piezoelectric plate generates the potential difference, the two inclined faces of the adsorption plate are respectively charged with positive and negative charges. The potentials on the two adjacent inclined planes of the two adjacent adsorption plates are different, and under the continuous repeated bending of the piezoelectric plate, the potentials on the adjacent inclined planes of the two adsorption plates are always kept different. When the fiber and the dust pass through the two adsorption plates, the fiber and the dust are adsorbed by the electric field on the adsorption plates, so that the fiber and the dust are filtered and intercepted, and the fiber and the dust are prevented from being attached to the driving machine.
The inner diameter of the damping ring is larger than the outer diameter of the air duct, an annular rubber pad is arranged between the damping ring and the air duct, and the flange is not in contact with the outer wall of the air duct. The damping ring utilizes the rubber pad to realize the shock attenuation buffering between dryer and the flange.
The flange is of an annular hollow structure, the inner side of the flange is provided with an opening, the longitudinal section of the flange is C-shaped, the inner diameter of the end face of the flange, which is far away from one side of the shock absorption ring, is larger than the inner diameter of the end face, which is close to one side of the shock absorption ring, and four screw holes are formed in the flange.
Through grooves are formed in the positions, corresponding to the screw holes, of the bent end faces of the flanges, bearing plates are arranged in the positions of the through grooves in the flanges, pin shafts are arranged at the two ends of each bearing plate, arc-shaped shaft grooves are formed in the positions, corresponding to the pin shafts, of the flanges, and the two ends of each pin shaft are located in the shaft grooves;
the screw sleeve is arranged in the middle of the inner side of the bearing plate, the screw sleeve is concentric with the screw hole, and a threaded hole is formed in the middle of the outer side of the bearing plate. The bearing plate is made of a memory metal sheet, when the bearing plate is required to be pulled out of the flange, the component with the screw teeth is screwed into the threaded hole, then the bearing plate is pulled and bent through the bolt, the flange is pulled out, the pin shaft slides in the shaft groove, the position of the bearing plate is limited, and the bearing plate is prevented from being completely separated from the flange. When the bearing plate is pulled out, the screw sleeve is also pulled out together, and the threaded bolt can be used for connecting square/round flanges or brackets with different sizes. The through groove provides a through opening for the bearing plate to move to the outside of the flange. When the axial flow fan is installed, according to the installation situation, the bolts can be directly penetrated through screw holes on the flange and fixed, or after the bearing plate is pulled out of the flange, the bolts are penetrated in the screw sleeve and fixed. Through the setting of loading board and swivel nut on the flange, realize that axial fan installs on square/circular flange of different sizes or the support of different trompil positions.
A saw rack is arranged at the position of the screw sleeve, which faces the center line of the flange, and the tooth tip of each tooth on the saw rack is inclined towards the damping ring;
the flange is internally provided with a bolt and two pulleys between two adjacent screw holes, the bolt is provided with a self-locking function, the bolt is rotatably arranged on the flange, one end of the bolt penetrates through the flange, two pulleys are arranged on the same rotating shaft, the rotating shaft is rotatably arranged in the flange, two traction ropes are wound on the bolt, one traction rope is fixed with a bearing plate on one side of the bolt by bypassing one pulley, and the other traction rope is fixed with a bearing plate on the other side of the bolt by bypassing the other pulley. The self-locking allows the bolt to remain in the same position without rotating under the pull of an external force. The flange is far away from the terminal surface internal diameter of ring one side of shock attenuation and is greater than the terminal surface internal diameter that is close to ring one side of shock attenuation, when needs are with axial fan butt joint in the outside air pipe, can insert outside air pipe from the terminal surface of one side that the flange internal diameter is big, make outside air pipe cover establish in the outside of dryer, afterwards, twist the bolt, make the haulage cable by the rolling on the bolt for the haulage cable at loading board both ends pulls, and then makes the swivel nut to the pipe wall direction motion of outside air pipe, the sawtooth strip supports on air pipe and detains pipe wall swivel nut and fix outside air pipe through the sawtooth strip under the drive of swivel nut, realize outside air pipe and dryer's connection, and then realize that axial fan installs in air pipe. The pulley is used for dredging the traction rope.
A ratchet ring is arranged at the position of the bolt in the flange;
The bolt comprises a thread sleeve and an outer shaft sleeve, the thread sleeve is sleeved on the outer shaft sleeve, the thread sleeve is fixed with a traction rope, three slide ways are arranged on the outer shaft sleeve, one end of the outer shaft sleeve penetrates through the flange, the inner side of one end of the outer shaft sleeve is of a regular hexagon profile, a shaft core is slidably arranged in the outer shaft sleeve, the shaft core is fixed with the thread sleeve through the slide ways, one end of the shaft core is fixed with a spring, and one end of the spring is propped against the inner wall of the flange;
The ratchet ring is sleeved on the outer shaft sleeve, a ratchet groove is formed in one end, close to the ratchet ring, of the threaded sleeve, and a ratchet on the ratchet ring is located in the ratchet groove. The spring applies an acting force to the shaft core, so that the thread sleeve is propped against the ratchet ring, and the effect of preventing the thread sleeve from being pulled by external force is achieved under the action of the ratchet. When the bearing plate is required to be pulled out of the flange, the hexagonal wrench is required to be inserted into the outer shaft sleeve first, so that the spring is compressed, the threaded sleeve is separated from the ratchet ring, and then the bearing plate is pulled. When the external ventilating duct is required to be fixed by utilizing the threaded sleeve, the hexagonal wrench is inserted into the external shaft sleeve firstly, the spring is partially compressed, the threaded sleeve is not completely separated from the ratchet ring, then the hexagonal wrench is screwed, the whole bolt is rotated, the rotation direction of the bolt is opposite to the rotation direction of the ratchet ring which blocks the threaded sleeve, and after the bolt is screwed, the hexagonal wrench is directly drawn out.
Compared with the prior art, the invention has the following beneficial effects:
1. and sound insulation cotton is arranged on the inner wall of the air duct and used for absorbing noise generated during the operation of the axial flow fan, so that the noise of the axial flow fan is reduced, and the influence on the outside during the operation of the axial flow fan is reduced. The damping rings are arranged on the air duct, and when vibration is generated, the damping rings realize damping and buffering between the axial flow fan and the external support or the external ventilating duct, and no matter the vibration comes from the axial flow fan or other external equipment.
2. When the spherical end of the piezoelectric plate swings, the piezoelectric plate bends and generates potential difference, two end faces of the potential difference generated by the piezoelectric plate are respectively and electrically connected with two inclined planes of the adsorption plate, and when the potential difference is generated by the piezoelectric plate, the two inclined planes of the adsorption plate are respectively charged with positive and negative charges. The electric potentials on the two inclined planes close to the two adjacent adsorption plates are different, and when fibers and dust pass through the two adsorption plates, the fibers and the dust are adsorbed by an electric field on the adsorption plates, so that the fibers and the dust are filtered and intercepted, and the fibers and the dust are prevented from being attached to a driving machine.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a front elevational view of the overall structure of the present invention;
FIG. 2 is an overall front half-section view of the present invention;
FIG. 3 is a right side elevational view of the overall structure of the present invention;
FIG. 4 is a schematic view of the position of the spherical end of the piezoelectric plate in the pressure regulating tank of the present invention;
FIG. 5 is a left side view of the flange of the present invention;
FIG. 6 is a front semi-sectional view of the flange of the present invention;
FIG. 7 is a right side half cross-sectional view of the flange of the present invention;
FIG. 8 is a schematic view of the sleeve of the present invention positioned inside a flange;
FIG. 9 is an enlarged partial view of area A of FIG. 8 in accordance with the present invention;
FIG. 10 is a front view of the bolt of the present invention;
Fig. 11 is a partial enlarged view of the area B of fig. 6 in accordance with the present invention.
In the figure:
1. An air duct; 101. a shaft bracket; 102. a variable pressure shaft; 1021. a pressure regulating groove; 103. an adsorption plate; 104. a fixing ring; 105. a piezoelectric plate; 106. soundproof cotton; 107. a driving machine; 108. a wind wheel; 109. a drive shaft;
2. A shock-absorbing ring;
3. A flange; 301. a screw hole; 302. a bolt; 3021. a thread sleeve; 3022. an outer sleeve; 3023. a spring; 303. a shaft groove; 304. a carrying plate; 305. a screw sleeve; 306. a pulley; 307. a traction cable; 308. ratchet ring.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1-11, the present invention provides the following technical solutions: the utility model provides an axial fan that possesses initiative function of making an uproar that falls, axial fan includes dryer 1, and the equal cover in the both ends outside of dryer 1 is equipped with damping ring 2, and flange 3 is installed to damping ring 2 one side, and damping ring 2's internal diameter is greater than dryer 1's external diameter, is provided with annular rubber pad between damping ring 2 and the dryer 1, and flange 3 does not contact with dryer 1 outer wall.
The air inlet end of the air duct 1 is provided with a filter screen, the inner wall of the air duct 1 is provided with a sound insulation cotton 106, the inside of the air duct 1 is provided with a driving machine 107, the central axis position of the air duct 1 is provided with a wind wheel 108, the output end of the driving machine 107 is connected with the wind wheel 108, the driving machine 107 is a motor, and the driving machine 107 is connected with a control system;
the flange 3 allows the axial fan to be mounted on an external support or an external ventilation duct.
The filter screen consists of a plurality of fixing rings 104 with different diameters and a plurality of adsorption plates 103, the fixing rings 104 are coaxial, the adsorption plates 103 are arranged on the fixing rings 104, one end of each adsorption plate 103 is fixed on the inner wall of the air duct 1, and the other end of each adsorption plate 103 is provided with a piezoelectric plate 105;
The middle part of dryer 1 installs the support, and the driving machine 107 is installed in the middle part position of support, and the output of driving machine 107 is connected with drive shaft 109, and the one end rotation of drive shaft 109 is connected with pedestal 101, and pedestal 101 is fixed in dryer 1, is provided with pressure swing axle 102 on the drive shaft 109, pressure swing axle 102 and piezoelectricity board 105 sliding connection, and pressure swing axle 102's one end is provided with the water conservancy diversion awl, and the water conservancy diversion awl outer fringe contacts with adsorption plate 103 front end.
The cross section of the adsorption plate 103 is isosceles triangle, and one end of the piezoelectric plate 105 is spherical; the transformer shaft 102 is provided with an annular corrugated pressure regulating groove 1021, and one spherical end of the piezoelectric plate 105 is positioned in the pressure regulating groove 1021.
The adsorption plate 103 is formed by splicing two isosceles right triangular posts, an insulating layer is attached between the two triangular posts, and the inclined plane of the triangular posts is the inclined plane of the adsorption plate 103.
The piezoelectric plate 105 is made of a piezoelectric material, and the spherical end of the piezoelectric plate 105 is positioned in the pressure regulating groove 1021.
Through setting the positions of the piezoelectric plates 105 and the positions of the wave crests and wave troughs of the pressure regulating grooves 1021, when the pressure changing shaft 102 rotates, the positions of the spherical ends of the two adjacent piezoelectric plates 105 in the pressure regulating grooves 1021 are different, one is positioned at the wave crest of the pressure regulating grooves 1021, and the other is positioned at the wave trough of the pressure regulating grooves 1021, and along with the continuous rotation of the pressure changing shaft 102, the spherical ends of the same piezoelectric plate 105 continuously move from the wave crest to the wave trough and then move from the wave trough to the wave crest, and when the spherical ends of the piezoelectric plates 105 are positioned at the wave crest and the wave trough, the bending directions of the piezoelectric plates 105 are opposite, namely the voltage directions of the piezoelectric plates 105 are continuously changed. When the driving shaft 109 drives the variable-voltage shaft 102 to rotate, the spherical end of the piezoelectric plate 105 swings under the guiding of the corrugated pressure regulating groove 1021, the swing direction of the spherical end is the axial direction of the variable-voltage shaft 102, when the spherical end of the piezoelectric plate 105 swings, the piezoelectric plate 105 bends and generates a potential difference, the two end surfaces of the piezoelectric plate 105 generating the potential difference are respectively and electrically connected with the two inclined surfaces of the adsorption plate 103, and when the piezoelectric plate 105 generates the potential difference, the two inclined surfaces of the adsorption plate 103 are respectively charged positively and negatively. The potentials on the two adjacent inclined surfaces of the two adjacent adsorption plates 103 are different, and the potentials on the adjacent inclined surfaces of the two adsorption plates 103 are always kept different under the repeated bending of the piezoelectric plate 105. When passing through the two adsorption plates 103, the fibers and dust are adsorbed by the electric field on the adsorption plates 103.
The flange 3 is of an annular hollow structure, the inner side of the flange 3 is provided with an opening, the longitudinal section of the flange 3 is C-shaped, the inner diameter of the end face of one side of the flange 3 far away from the shock absorption ring 2 is larger than the inner diameter of the end face of one side of the flange 3 close to the shock absorption ring 2, and four screw holes 301 are formed in the flange 3.
Through grooves are formed in the bent end face of the flange 3 at positions corresponding to the screw holes 301, a bearing plate 304 is arranged in the flange 3 at the position of each through groove, the bearing plate 304 is a memory metal sheet, pin shafts are arranged at two ends of each bearing plate 304, an arc-shaped shaft groove 303 is formed in the flange 3 at the positions corresponding to the pin shafts, and two ends of each pin shaft are located in the shaft groove 303;
The middle position of the inner side of the bearing plate 304 is provided with a threaded sleeve 305, the threaded sleeve 305 is concentric with the threaded hole, and the middle position of the outer side of the bearing plate 304 is provided with a threaded hole.
When the carrier plate 304 needs to be pulled out of the flange 3, the component with screw teeth is screwed into the threaded hole, then the carrier plate 304 is pulled and bent by the bolts and the flange 3 is pulled out, the pin shaft slides in the shaft groove 303 and limits the position of the carrier plate 304, and the carrier plate 304 is prevented from being completely separated from the flange 3.
When the carrier plate 304 is pulled out, the threaded sleeve 305 is also pulled out together, and the threaded sleeve 305 can be threaded with bolts for connecting square/round flanges or brackets of different sizes. The through slots provide access for the carrier plate 304 to move outside the flange 3. When the axial flow fan is installed, bolts can be directly inserted into screw holes on the flange 3 to fix the axial flow fan according to the installation situation, or after the bearing plate 304 is pulled out of the flange 3, bolts are inserted into the threaded sleeve 305 to fix the axial flow fan. By arranging the bearing plate 304 and the threaded sleeve 305 on the flange 3, the axial flow fan is mounted on square/round flanges with different sizes or brackets with different opening positions.
The position of the threaded sleeve 305, which faces the center line of the flange 3, is provided with a saw rack, and the tooth tip of each tooth on the saw rack is inclined towards the damping ring 2;
The inside of the flange 3 is provided with a bolt 302 and two pulleys 306 between two adjacent screw holes, the bolt 302 is provided with a self-locking function, the bolt 302 is rotatably arranged on the flange 3, one end of the bolt penetrates through the flange 3, the two pulleys 306 are arranged on the same rotating shaft, the rotating shaft is rotatably arranged in the flange 3, two traction ropes 307 are wound on the bolt 302, one traction rope 307 bypasses one pulley 306 to be fixed with a bearing plate 304 on one side of the bolt 302, and the other traction rope 307 bypasses the other pulley to be fixed with the bearing plate 304 on the other side of the bolt 302.
A ratchet ring 308 is arranged in the flange 3 at the position of the bolt 302;
the bolt 302 comprises a threaded sleeve 3021 and an outer sleeve 3022, the threaded sleeve 3021 is sleeved on the outer sleeve 3022, the threaded sleeve 3021 is fixed with the traction cable 307, three sliding ways are arranged on the outer sleeve 3022, one end of the outer sleeve 3022 penetrates through the flange 3, the inner side of one end of the outer sleeve 3022 is of a regular hexagon profile, a shaft core is slidably mounted in the outer sleeve 3022 and is fixed with the threaded sleeve 3021 through the sliding ways, one end of the shaft core is fixed with a spring 3023, one end of the spring abuts against the inner wall of the flange 3, and the spring 3023 exerts acting force on the shaft core, so that the threaded sleeve 3021 abuts against the ratchet ring 308;
The ratchet ring 308 is sleeved on the outer sleeve 3022, a ratchet slot is arranged at one end of the threaded sleeve 3021, which is close to the ratchet ring 308, and the ratchet teeth on the ratchet ring 308 are positioned in the ratchet slot.
When it is desired to pull the carrier plate 304 out of the flange 3, it is necessary to insert a hex wrench into the outer hub 3022 so that the spring is compressed, the threaded hub 3021 is separated from the ratchet ring 308, and then the carrier plate 304 is pulled.
When the axial flow fan needs to be connected to the external ventilation pipeline in a butt joint mode, the external ventilation pipeline can be inserted from the end face of the side, with the large inner diameter, of the flange 3, the external ventilation pipeline is sleeved outside the air duct 1, then a hexagonal wrench is inserted into the outer shaft sleeve 3022, the spring is partially compressed, the threaded sleeve 3021 is not completely separated from the ratchet ring 308, then the hexagonal wrench is screwed, the whole bolt 302 rotates, the rotating direction of the bolt 302 is opposite to the rotating direction of the ratchet ring 308 for blocking the threaded sleeve 3021, and the hexagonal wrench is directly pulled out after the bolt 302 is screwed.
Screwing the bolt 302, so that the traction cable 307 is wound on the bolt 302, the traction cable 307 at two ends of the bearing plate 304 is pulled, the threaded sleeve 305 moves towards the pipe wall direction of the external ventilating pipe, the saw rack is propped against the ventilating pipe under the drive of the threaded sleeve 305 and buckled into the pipe wall threaded sleeve 305 to fix the external ventilating pipe through the saw-tooth strips, the connection between the external ventilating pipe and the air duct 1 is realized, and then the axial flow fan is installed in the ventilating pipe.
The working principle of the invention is as follows:
When the axial flow fan is installed, bolts can be directly inserted into screw holes on the flange 3 to fix the axial flow fan according to the installation situation, or after the bearing plate 304 is pulled out of the flange 3, bolts are inserted into the threaded sleeve 305 to fix the axial flow fan.
When the carrier 304 needs to be pulled out of the flange 3, a hexagonal wrench is needed to be inserted into the outer sleeve 3022, so that the spring is compressed, the threaded sleeve 3021 is separated from the ratchet ring 308, then the component with the screw teeth is screwed into the threaded hole, then the carrier 304 is pulled and bent by the bolt, the flange 3 is pulled out, the pin shaft slides in the shaft groove 303 and limits the position of the carrier 304, and the carrier 304 is prevented from being completely separated from the flange 3. When the carrier plate 304 is pulled out, the threaded sleeve 305 is also pulled out together, and the threaded sleeve 305 can be threaded with bolts for connecting square/round flanges or brackets of different sizes.
When the axial flow fan needs to be connected to the external ventilation pipeline in a butt joint mode, the external ventilation pipeline can be inserted from the end face of one side with the large inner diameter of the flange 3, the external ventilation pipeline is sleeved outside the air duct 1, then a hexagonal wrench is inserted into the outer shaft sleeve 3022, the spring is partially compressed, the threaded sleeve 3021 is not completely separated from the ratchet ring 308, then the hexagonal wrench is screwed, the whole bolt 302 is rotated, the rotation direction of the bolt 302 is opposite to the rotation direction of the ratchet ring 308 for blocking the threaded sleeve 3021, and the hexagonal wrench is directly pulled out after the bolt 302 is screwed.
Screwing the bolt 302, so that the traction cable 307 is wound on the bolt 302, the traction cable 307 at two ends of the bearing plate 304 is pulled, the threaded sleeve 305 moves towards the pipe wall direction of the external ventilating pipe, the saw rack is propped against the ventilating pipe under the drive of the threaded sleeve 305 and buckled into the pipe wall threaded sleeve 305 to fix the external ventilating pipe through the saw-tooth strips, the connection between the external ventilating pipe and the air duct 1 is realized, and then the axial flow fan is installed in the ventilating pipe.
The driving machine 107 drives the wind wheel 108 and the driving shaft 109 to rotate, the wind wheel 108 extracts indoor air and discharges the indoor air to the outside, when the driving shaft 109 drives the variable-pressure shaft 102 to rotate, the spherical end of the piezoelectric plate 105 swings under the guiding of the corrugated pressure regulating groove 1021, the swinging direction of the spherical end is the axial direction of the variable-pressure shaft 102, when the spherical end of the piezoelectric plate 105 swings, the piezoelectric plate 105 bends and generates potential difference, the two end faces of the piezoelectric plate 105 generating potential difference are respectively and electrically connected with the two inclined faces of the adsorption plate 103, and when the piezoelectric plate 105 generates potential difference, the two inclined faces of the adsorption plate 103 are respectively charged with positive and negative charges. The electric potentials on the two inclined planes of the adjacent two adsorption plates 103 are different, and when the piezoelectric plate 105 is repeatedly bent, fibers and dust pass through the two adsorption plates 103, the fibers and the dust are adsorbed by the electric field on the adsorption plates 103, so that the air is filtered.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. An axial fan who possesses initiative function of making an uproar, its characterized in that: the axial flow fan comprises an air duct (1), shock absorption rings (2) are sleeved on the outer sides of two ends of the air duct (1), a flange (3) is installed on one side of each shock absorption ring (2), a filter screen is installed at the air inlet end of the air duct (1), sound insulation cotton (106) is installed on the inner wall of the air duct (1), a driving machine (107) is installed inside the air duct (1), a wind wheel (108) is installed at the central axis position of the air duct (1), the output end of the driving machine (107) is connected with the wind wheel (108), and the driving machine (107) is connected with a control system; the flange (3) enables the axial flow fan to be arranged on an external bracket or an external ventilating duct;
The inner diameter of the shock absorption ring (2) is larger than the outer diameter of the air duct (1), an annular rubber pad is arranged between the shock absorption ring (2) and the air duct (1), and the flange (3) is not contacted with the outer wall of the air duct (1); the flange (3) is of an annular hollow structure, the inner side of the flange (3) is provided with an opening, the longitudinal section of the flange (3) is C-shaped, the inner diameter of the end face of the side, far away from the shock absorption ring (2), of the flange (3) is larger than the inner diameter of the end face of the side, close to the shock absorption ring (2), of the flange (3), and four screw holes (301) are formed in the flange (3); through grooves are formed in the positions, corresponding to the screw holes (301), of the bent end faces of the flanges (3), bearing plates (304) are arranged in the positions, corresponding to the screw holes, of the flanges (3), pin shafts are arranged at the two ends of each bearing plate (304), arc-shaped shaft grooves (303) are formed in the positions, corresponding to the pin shafts, of the flanges (3), and the two ends of each pin shaft are located in the shaft grooves (303);
A threaded sleeve (305) is arranged at the middle position of the inner side of the bearing plate (304), the threaded sleeve (305) is concentric with the screw hole, and a threaded hole is formed in the middle position of the outer side of the bearing plate (304); a saw rack is arranged at the position of the screw sleeve (305) facing the central line of the flange (3), and the tooth tip of each tooth on the saw rack is inclined towards the shock absorption ring (2);
The flange (3) is internally provided with a bolt (302) and two pulleys (306) between two adjacent screw holes, the bolt (302) is provided with a self-locking function, the bolt (302) is rotatably arranged on the flange (3), one end of the bolt penetrates through the flange (3), the two pulleys (306) are arranged on the same rotating shaft, the rotating shaft is rotatably arranged in the flange (3), two traction ropes (307) are wound on the bolt (302), one traction rope (307) bypasses one pulley (306) to be fixed with a bearing plate (304) on one side of the bolt (302), and the other traction rope (307) bypasses the other pulley to be fixed with the bearing plate (304) on the other side of the bolt (302);
A ratchet ring (308) is arranged at the position of the bolt (302) in the flange (3);
The bolt (302) comprises a threaded sleeve (3021) and an outer sleeve (3022), the threaded sleeve (3021) is sleeved on the outer sleeve (3022), the threaded sleeve (3021) is fixed with a traction rope (307), three sliding ways are formed in the outer sleeve (3022), one end of the outer sleeve (3022) penetrates through a flange (3), the inner side of one end of the outer sleeve (3022) is of a regular hexagon profile, a shaft core is slidably mounted in the outer sleeve (3022), the shaft core is fixed with the threaded sleeve (3021) through the sliding ways, a spring (3023) is fixed at one end of the shaft core, and one end of the spring abuts against the inner wall of the flange (3);
The ratchet ring (308) is sleeved on the outer sleeve (3022), a ratchet groove is formed in one end, close to the ratchet ring (308), of the threaded sleeve (3021), and ratchets on the ratchet ring (308) are located in the ratchet groove.
2. The axial flow fan with active noise reduction function according to claim 1, wherein: the filter screen consists of a plurality of fixing rings (104) with different diameters and a plurality of adsorption plates (103), wherein the fixing rings (104) are coaxial, the adsorption plates (103) are arranged on the fixing rings (104), one end of each adsorption plate (103) is fixed on the inner wall of the air duct (1), and the other end of each adsorption plate (103) is provided with a piezoelectric plate (105);
The air dryer is characterized in that a bracket is arranged in the middle of the air dryer (1), the driving machine (107) is arranged in the middle of the bracket, the output end of the driving machine (107) is connected with a driving shaft (109), one end of the driving shaft (109) is rotationally connected with a shaft bracket (101), the shaft bracket (101) is fixed in the air dryer (1), a variable-pressure shaft (102) is arranged on the driving shaft (109), the variable-pressure shaft (102) is in sliding connection with the piezoelectric plate (105), one end of the variable-pressure shaft (102) is provided with a flow guide cone, and the outer edge of the flow guide cone is in contact with the front end of the adsorption plate (103).
3. The axial flow fan with active noise reduction function according to claim 2, wherein: the cross section of the adsorption plate (103) is an isosceles triangle, and one end of the piezoelectric plate (105) is spherical; annular corrugated pressure regulating grooves (1021) are formed in the pressure changing shaft (102), and one spherical end of the piezoelectric plate (105) is located in the pressure regulating grooves (1021).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310005213.2A CN116201753B (en) | 2023-01-04 | 2023-01-04 | Axial flow fan with active noise reduction function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310005213.2A CN116201753B (en) | 2023-01-04 | 2023-01-04 | Axial flow fan with active noise reduction function |
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| CN116201753B true CN116201753B (en) | 2024-04-16 |
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| CN205823686U (en) * | 2016-06-24 | 2016-12-21 | 北京海月星科技有限公司 | A kind of low noise diagonal flow ventilator |
| CN214247744U (en) * | 2020-12-24 | 2021-09-21 | 武汉军鹏伟业通风设备有限公司 | Damping and noise reduction type mixed flow fan |
| CN214945164U (en) * | 2021-06-28 | 2021-11-30 | 浙江弘科机电有限公司 | Low-noise explosion-proof axial flow fan |
| CN113738677A (en) * | 2021-09-22 | 2021-12-03 | 台州市杰龙风机厂 | Axial fan easy to assemble and adjust |
| CN215762461U (en) * | 2021-09-22 | 2022-02-08 | 威海红日环保设备有限公司 | Vibration/noise reduction structure for axial fan |
| CN216617948U (en) * | 2021-12-15 | 2022-05-27 | 青岛海纳特船舶设备制造有限公司 | Marine axial fan vibration/noise reduction device |
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2023
- 2023-01-04 CN CN202310005213.2A patent/CN116201753B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205823686U (en) * | 2016-06-24 | 2016-12-21 | 北京海月星科技有限公司 | A kind of low noise diagonal flow ventilator |
| CN214247744U (en) * | 2020-12-24 | 2021-09-21 | 武汉军鹏伟业通风设备有限公司 | Damping and noise reduction type mixed flow fan |
| CN214945164U (en) * | 2021-06-28 | 2021-11-30 | 浙江弘科机电有限公司 | Low-noise explosion-proof axial flow fan |
| CN113738677A (en) * | 2021-09-22 | 2021-12-03 | 台州市杰龙风机厂 | Axial fan easy to assemble and adjust |
| CN215762461U (en) * | 2021-09-22 | 2022-02-08 | 威海红日环保设备有限公司 | Vibration/noise reduction structure for axial fan |
| CN216617948U (en) * | 2021-12-15 | 2022-05-27 | 青岛海纳特船舶设备制造有限公司 | Marine axial fan vibration/noise reduction device |
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| CN116201753A (en) | 2023-06-02 |
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