CN108506233B - Self-cleaning exhaust fan - Google Patents

Self-cleaning exhaust fan Download PDF

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Publication number
CN108506233B
CN108506233B CN201810283848.8A CN201810283848A CN108506233B CN 108506233 B CN108506233 B CN 108506233B CN 201810283848 A CN201810283848 A CN 201810283848A CN 108506233 B CN108506233 B CN 108506233B
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CN
China
Prior art keywords
gear
scraper
motor
rotating shaft
mesh enclosure
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Active
Application number
CN201810283848.8A
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Chinese (zh)
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CN108506233A (en
Inventor
邵瑞
张家俊
陈鹏
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MAANSHAN ogesas Machinery Technology Co., Ltd
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Maanshan Ogesas Machinery Technology Co Ltd
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Priority to CN201810283848.8A priority Critical patent/CN108506233B/en
Publication of CN108506233A publication Critical patent/CN108506233A/en
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Publication of CN108506233B publication Critical patent/CN108506233B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/002Details, component parts, or accessories especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps

Abstract

The invention belongs to the technical field of exhaust fans and exhaust fans, and particularly relates to a self-cleaning exhaust fan which comprises a shell, a motor, fan blades, a mesh enclosure, a brushing module and a driving module, wherein the shell is provided with a fan blade; one side of a rotating shaft of the motor is provided with a brushing module; the brushing module comprises an upper scraper and a lower scraper, and the upper scraper and the lower scraper are used for scraping dirt adhered to the surface of the mesh enclosure; the other side of the rotating shaft of the motor is provided with a fan blade; the driving module is used for driving the fan blades to rotate; the driving module can be one of a planetary gear mechanism and a link mechanism, can realize the rotation and revolution of the fan blades, and can exhaust air and clean the mesh enclosure at the same time; the planetary gear mechanism comprises a first gear, a second gear and a first gear ring; the link mechanism includes a link, a third gear, and a second ring gear. The fan blades and the brushing-off modules are symmetrically arranged on two sides of the motor; and realizes the circulation alternating air exhaust and cleaning through the driving module; avoid the exhaust fan screen panel adhesion foul, need not artifical clearance.

Description

Self-cleaning exhaust fan
Technical Field
The invention belongs to the technical field of exhaust fans and exhaust fans, and particularly relates to a self-cleaning exhaust fan.
Background
The exhaust fan drives the fan blades to rotate by the motor to drive airflow, so that indoor air and outdoor air are exchanged. Also known as ventilators. The purpose of the exhaust air is to remove the dirty air from the room and to adjust the temperature, humidity and sensory effects. The exhaust fan is widely applied to families and public places. Because the exhaust fan is generally fixedly arranged at the top of the room, a lot of dust is accumulated on the exhaust fan after long-term use, and the exhaust fan is inconvenient to clean.
Disclosure of Invention
In order to make up the defects of the prior art, the fan blades and the brushing-off modules are symmetrically arranged on the two sides of the motor; the functions of exhausting air from one side and cleaning the other side are realized and alternately performed; avoid the exhaust fan screen panel adhesion foul, need not artifical clearance.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a self-cleaning exhaust fan, which comprises a shell, a motor, fan blades and a mesh enclosure; the structure and the working principle of the exhaust fan are not innovative in the scheme and are not described in detail herein; the device also comprises a brushing module and a driving module; a brushing module is arranged on one side of a rotating shaft of the motor in a matched manner with the mesh enclosure; the other side of the rotating shaft of the motor is provided with a fan blade; the driving module is used for connecting a motor rotating shaft and driving the fan blades to rotate; the drive module may be one of a planetary gear mechanism and a link mechanism.
The brushing module comprises an upper scraper and a lower scraper; the upper scraper is fixedly arranged in the middle of the rotating shaft of the motor and is positioned on one side of the mesh enclosure; a lower scraper fixedly connected with a motor rotating shaft is arranged on the other side of the mesh enclosure corresponding to the upper scraper; the upper scraper and the lower scraper are used for scraping dirt adhered to the surface of the mesh enclosure; the upper scraper and the lower scraper are provided with bristles on one sides corresponding to the mesh enclosure.
Preferably, the planetary gear mechanism includes a first gear, a second gear, and a first ring gear; the middle part of the motor rotating shaft is fixedly connected with a first gear; the fan blade shaft is fixedly connected with a second gear; the first gear is meshed with the second gear; the inner wall of the shell is fixedly connected with a first gear ring; the first gear ring is meshed with the second gear; the first gear rotates to drive the fan blades to rotate eccentrically; the brush that cooperation one side set up removes the module and realizes airing exhaust the working process of clearance on one side, avoids screen panel adhesion foul, need not the manual work and carries out the dust clearance.
Preferably, the link mechanism comprises a link, a third gear and a second gear ring; one end of the connecting rod is fixedly connected to a motor rotating shaft; the other end of the connecting rod rotates at one side of the third gear; the other side of the third gear is fixedly connected with a fan blade; the inner wall of the shell is fixedly connected with a second gear ring; the second gear ring is meshed with the third gear; the connecting rod rotates to drive the fan blades to rotate eccentrically; the brush that cooperation one side set up removes the module and realizes airing exhaust the working process of clearance on one side, avoids screen panel adhesion foul, need not the manual work and carries out the dust clearance.
Preferably, the rotating shaft of the motor is a hollow shaft; the motor rotating shaft can be communicated with water flow; one side of the upper scraper plate corresponding to the mesh enclosure is provided with a group of water outlet holes; the lower scraper plate is correspondingly provided with a water receiving groove; a water separator is arranged in the water outlet hole; the water separator is one of a spherical flow divider and a conical flow divider; when the difficult brush of adhesion was removed foul on the screen panel, accessible outlet hole sprayed water to the screen panel surface and carried out the clearance of foul, simultaneously in order to increase rivers to the direct impact force of foul, divide into the rivers of apopore multistrand through setting up the water knockout drum, is convenient for to the clearance of screen panel surface different positions for the clearance effect is more abundant.
Preferably, the spherical flow divider is rotatably arranged in the water outlet hole; spherical shunt middle part is equipped with the cavity, the cavity is equipped with the radial type through-hole in a set of intercommunication spherical shunt outside, and through setting up the through-hole of odd number quantity, rivers change through direction when spherical shunt for spherical shunt produces the side direction turning force, realizes the rotation of spherical shunt, thereby makes the rivers direction through spherical shunt produce the change in real time, improves the clearance of screen panel surface different positions, makes the clearance effect more abundant.
Preferably, the cross section of the conical flow divider is set to be conical, and the conical flow divider is rotatably arranged in the water outlet hole; a spiral connecting hole communicated with the two end faces is formed in the conical flow divider, an opening at one end of the connecting hole is formed in the center of the axis of the conical flow divider, and an opening at the other end of the connecting hole is formed in one side of the axis of the conical flow divider and is arranged in the tangential direction of a concentric circle of the end faces; the conical splitter can spray water flow in the tangential direction of the conical splitter, and the conical splitter can rotate in the radial direction through the water flow spraying in the tangential direction; the cleaning of different positions on the surface of the mesh enclosure is improved, so that the cleaning effect is more sufficient.
Preferably, the rotating shaft of the motor is a hollow shaft; the motor rotating shaft can be communicated with a dust suction pump; one side of the upper scraper corresponding to the net cover is provided with a group of air suction holes; one side of the air exhaust hole is covered with a rubber pad, two sides of the rubber pad are fixedly connected with two sides of the air exhaust hole, and the other two sides of the rubber pad can be opened when the upper scraper plate exhausts air; the middle part of the rubber pad is provided with a conical bulge inserted in the air exhaust hole; the conical protrusions are used for preventing dust from blocking the air suction holes; aiming at workplaces with large dust, the large amount of dust is easy to adhere to the mesh enclosure during air exhaust, and the dust removed by the mesh enclosure is pumped away by a dust suction pump communicated with a motor rotating shaft without manual cleaning; because the dust is more, easily causes the jam of aspirating hole, through the rubber pad that aspirating hole one side covered, the intermittent type is bled and is made the rubber pad vibration to cooperation rubber pad middle part sets up the taper arch, dredges the aspirating hole, effectively avoids the jam of aspirating hole, improves dust exhaust efficiency.
The invention has the following beneficial effects:
1. the fan blades and the brushing-off modules are symmetrically arranged on two sides of the motor; the driving module is used for realizing circulation alternating air exhaust and mesh enclosure cleaning; dirt is prevented from being adhered to the net cover of the exhaust fan, and manual cleaning is not needed; the drive module may be one of a planetary gear mechanism and a link mechanism; the brushing module can be cleaned by adopting methods such as a brush, water flushing, dust collection and the like.
2. According to the invention, the water separator is arranged to divide the water flow of the water outlet hole into a plurality of strands, so that different positions on the surface of the mesh enclosure can be cleaned conveniently, and the cleaning effect is more sufficient.
3. According to the invention, the spherical flow divider is selected and used, the spherical flow divider is provided with the odd number of through holes, the direction of water flow is changed when the water flow passes through the spherical flow divider, so that the spherical flow divider generates lateral rotating force, the rotation of the spherical flow divider is realized, the direction of the water flow passing through the spherical flow divider is changed in real time, the cleaning of different positions on the surface of the mesh enclosure is improved, and the cleaning effect is more sufficient
4. According to the invention, the conical flow divider is selected and provided with the spiral connecting holes, and the conical flow divider can generate radial rotation through water flow injection in the tangential direction; the cleaning of different positions on the surface of the mesh enclosure is improved, so that the cleaning effect is more sufficient.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a block diagram of the drive module of the present invention as a planetary gear mechanism;
FIG. 2 is a block diagram of the drive module of the present invention as a linkage;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
FIG. 4 is a structural diagram of a spherical diverter installed in a water outlet hole when the upper scraper plate is provided with the water outlet hole according to the invention;
FIG. 5 is a structural diagram of a conical diverter mounted in a water outlet hole of the upper scraper according to the present invention;
FIG. 6 is a view showing a rubber pad installed on the side of the hole when the upper blade is provided with the air extraction hole according to the present invention;
in the figure: the device comprises a shell 1, a motor 2, a mesh enclosure 3, a brushing module 4, a driving module 5, a planetary gear mechanism 6, a first gear 61, a second gear 62, a first gear ring 63, a link mechanism 7, a link 71, a third gear 72, a second gear ring 73, an upper scraper 8, a water outlet 81, a spherical flow divider 812, a conical flow divider 813, a through hole 814, a connecting hole 815, an air suction hole 82, a rubber pad 83, a conical protrusion 84 and a lower scraper 9.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the self-cleaning exhaust fan of the present invention comprises a housing 1, a motor 2, fan blades and a mesh enclosure 3; the structure and the working principle of the exhaust fan are not innovative in the scheme and are not described in detail herein; the device also comprises a brushing module 4 and a driving module 5; a brushing module 4 is arranged on one side of the rotating shaft of the motor 2 in a matched manner with the mesh enclosure 3; (ii) a The other side of the rotating shaft of the motor 2 is provided with a fan blade; the driving module 5 is used for connecting a rotating shaft of the motor 2 and driving the fan blades to rotate; the drive module 5 may be one of a planetary gear mechanism 6 and a link mechanism 7.
The brushing module 4 comprises an upper scraper 8 and a lower scraper 9; the upper scraper 8 is fixedly arranged in the middle of the rotating shaft of the motor 2 and is positioned on one side of the mesh enclosure 3; a lower scraper blade 9 fixedly connected with the rotating shaft of the motor 2 is arranged on the other side of the mesh enclosure 3 corresponding to the upper scraper blade 8; the upper scraper 8 and the lower scraper 9 are used for scraping dirt adhered to the surface of the mesh enclosure 3; the upper scraper 8 and the lower scraper 9 are provided with bristles on one sides corresponding to the mesh enclosure 3.
As an embodiment of the present invention, the planetary gear mechanism 6 includes a first gear 61, a second gear 62, and a first ring gear 63; the middle part of the rotating shaft of the motor 2 is fixedly connected with a first gear 61; the fan blade shaft is fixedly connected with a second gear 62; the first gear 61 and the second gear 62 are meshed; the inner wall of the shell 1 is fixedly connected with a first gear ring 63; the first gear ring 63 is meshed with the second gear 62; the first gear 61 rotates to drive the fan blades to rotate eccentrically; the brush that cooperation one side set up removes module 4 and realizes airing exhaust the working process of clearance on one side, avoids screen panel 3 adhesion foul, need not the manual work and carries out the dust clearance.
As an embodiment of the present invention, the link mechanism 7 includes a link 71, a third gear 72, and a second ring gear 73; one end of the connecting rod 71 is fixedly connected to a rotating shaft of the motor 2; the other end of the connecting rod 71 rotates at one side of a third gear 72; the other side of the third gear 72 is fixedly connected with fan blades; the inner wall of the shell 1 is fixedly connected with a second gear ring 73; the second gear 73 is meshed with the third gear 72; the connecting rod 71 rotates to drive the fan blades to rotate eccentrically; the brush that cooperation one side set up removes module 4 and realizes airing exhaust the working process of clearance on one side, avoids screen panel 3 adhesion foul, need not the manual work and carries out the dust clearance.
As an embodiment of the invention, the rotating shaft of the motor 2 is provided as a hollow shaft; the rotating shaft of the motor 2 can be communicated with water flow; one side of the upper scraper 8 corresponding to the mesh enclosure 3 is provided with a group of water outlet holes 81; the lower scraper 9 is correspondingly provided with a water receiving groove; a water separator is arranged in the water outlet hole 81; the water separator is one of a spherical flow divider 812 and a conical flow divider 813; when the difficult dirt that brushes off of adhesion on screen panel 3, accessible apopore 81 sprays water to screen panel 3 surface and carries out the clearance of dirt, simultaneously in order to increase rivers to the direct impact force of dirt, falls into the multistrand with the rivers of apopore 81 through setting up the water knockout drum, is convenient for to the clearance of screen panel 3 surperficial different positions for the clearance effect is more abundant.
In one embodiment of the present invention, the spherical diverter 812 is rotatably installed in the water outlet hole 81; spherical shunt 812 middle part is equipped with the cavity, the cavity is equipped with the radial type through-hole 814 in a set of intercommunication spherical shunt 812 outside, and through setting up odd number through-hole 814, the direction changes when rivers pass through spherical shunt 812 for spherical shunt 812 produces the side direction turning force, realizes the rotation of spherical shunt 812, thereby makes the rivers direction through spherical shunt 812 produce the change in real time, improves the clearance of screen panel 3 surface different positions, makes the clearance effect more abundant.
In one embodiment of the present invention, the tapered flow diverter 813 is provided with a tapered cross section, and the tapered flow diverter 813 is rotatably installed in the water outlet hole 81; a spiral connecting hole 815 communicated with two end faces is arranged in the conical flow divider 813, an opening at one end of the connecting hole 815 is arranged at the center of the axis of the conical flow divider 813, and an opening at the other end of the connecting hole 815 is arranged on one side of the axis of the conical flow divider 813 and is arranged in the tangential direction of a concentric circle of the end faces; the conical flow divider 813 can spray water flow along the tangential direction of the conical flow divider 813, and the conical flow divider 813 can generate radial rotation through the water flow spray along the tangential direction; the cleaning of different positions on the surface of the mesh enclosure 3 is improved, so that the cleaning effect is more sufficient.
As an embodiment of the invention, the rotating shaft of the motor 2 is provided as a hollow shaft; the rotating shaft of the motor 2 can be communicated with a dust suction pump; one side of the upper scraper 8 corresponding to the mesh enclosure 3 is provided with a group of extraction holes 82; one side of the air exhaust hole 82 is covered with a rubber pad 83, two sides of the rubber pad 83 are fixedly connected with two sides of the air exhaust hole 82, and the other two sides of the rubber pad 83 can be opened when the upper scraper 8 exhausts air; a conical bulge 84 inserted in the air suction hole 82 is arranged in the middle of the rubber pad 83; the tapered protrusions 84 are used to prevent dust from clogging the suction holes 82; aiming at workplaces with larger dust, more dust is easy to adhere to the mesh enclosure 3 during air exhaust, and the dust scraped by the mesh enclosure 3 is pumped away by a dust suction pump communicated with a rotating shaft of the motor 2 without manual cleaning; because the dust is more, easily cause the jam of aspirating hole 82, through the rubber pad 83 that aspirating hole 82 one side covered, intermittent type is bled and is made the rubber pad 83 vibration to cooperation rubber pad 83 middle part sets up the toper arch 84, dredges aspirating hole 82, effectively avoids the jam of aspirating hole 82, improves dust exhaust efficiency.
When the fan works, one side of the exhaust fan is provided with fan blades, and the other side is provided with the brushing module 4; the motor 2 drives the fan blades to rotate eccentrically through the driving module 5; the drive module 5 may be one of a planetary gear mechanism 6 and a link mechanism 7; when the planetary gear mechanism 6 is adopted, the first gear 61 and the second gear 62 are matched with the first gear ring 63 to realize the self-transmission of the fan blades, and simultaneously, the revolution of the fan blades around the shaft of the motor 2 is realized; when the link mechanism 7 is adopted, the link 71 drives the third gear 72 to revolve around the shaft of the motor 2, the third gear 72 is matched with the second gear ring 73 to realize the self-transmission of the fan blades and the revolution, and the function of cleaning one side of the air exhaust and the other side of the air exhaust are realized by matching with the upper scraper 8 and the lower scraper 9 arranged on the brushing module 4 and are alternatively carried out; dirt is prevented from being adhered to the surface of the mesh enclosure 3; when dirt which is difficult to brush is adhered to the mesh enclosure 3, the dirt can be cleaned by spraying water to the surface of the mesh enclosure 3 through the water outlet 81, and meanwhile, in order to increase the direct impact force of water flow on the dirt, the water flow of the water outlet 81 is divided into a plurality of strands through the water separator, so that different positions on the surface of the mesh enclosure 3 can be conveniently washed, and the cleaning effect is more sufficient; aiming at workplaces with larger dust, more dust is easy to adhere to the mesh enclosure 3 during air exhaust, and the dust scraped by the mesh enclosure 3 is pumped away by a dust suction pump communicated with a rotating shaft of the motor 2 without manual cleaning; because the dust is more, easily cause the jam of aspirating hole 82, through the rubber pad 83 that aspirating hole 82 one side covered, intermittent type is bled and is made the rubber pad 83 vibration to cooperation rubber pad 83 middle part sets up the toper arch 84, dredges aspirating hole 82, effectively avoids the jam of aspirating hole 82, improves dust exhaust efficiency.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. A self-cleaning exhaust fan comprises a shell (1), a motor (2), fan blades and a mesh enclosure (3); the method is characterized in that: the device also comprises a brushing module (4) and a driving module (5); a brushing module (4) is arranged on one side of the rotating shaft of the motor (2) in a way of being matched with the mesh enclosure (3); the other side of the rotating shaft of the motor (2) is provided with a fan blade; the driving module (5) is used for connecting a rotating shaft of the motor (2) and driving the fan blades to rotate; the drive module (5) is a planetary gear mechanism (6); wherein the content of the first and second substances,
the brushing module (4) comprises an upper scraper (8) and a lower scraper (9); the upper scraper (8) is fixedly arranged in the middle of the rotating shaft of the motor (2) and is positioned on one side of the mesh enclosure (3); a lower scraper (9) fixedly connected with a rotating shaft of the motor (2) is arranged on the other side of the mesh enclosure (3) corresponding to the upper scraper (8); the upper scraper (8) and the lower scraper (9) are used for scraping dirt adhered to the surface of the mesh enclosure (3); the upper scraper (8) and the lower scraper (9) are provided with bristles on the sides corresponding to the mesh enclosure (3);
the planetary gear mechanism (6) comprises a first gear (61), a second gear (62) and a first ring gear (63); the middle part of the rotating shaft of the motor (2) is fixedly connected with a first gear (61); the fan blade is fixedly connected with a second gear (62); the first gear (61) and the second gear (62) are meshed; the inner wall of the shell (1) is fixedly connected with a first gear ring (63); the first gear ring (63) is meshed with the second gear (62); the first gear (61) rotates to drive the fan blades to rotate eccentrically;
the rotating shaft of the motor (2) is a hollow shaft; the rotating shaft of the motor (2) can be communicated with water flow; one side of the upper scraper (8) corresponding to the mesh enclosure (3) is provided with a group of water outlet holes (81); the lower scraper (9) is correspondingly provided with a water receiving groove; a water separator is arranged in the water outlet hole (81); the water separator is a conical flow divider (813).
2. A self-cleaning exhaust fan in accordance with claim 1, wherein: the cross section of the conical flow divider (813) is set to be conical, and the conical flow divider (813) is rotatably arranged in the water outlet hole (81); a spiral connecting hole (815) communicated with two end faces is formed in the conical flow divider (813), an opening at one end of the connecting hole (815) is formed in the center of the axis of the conical flow divider (813), and an opening at the other end of the connecting hole (815) is formed in one side of the axis of the conical flow divider (813) and is arranged in the tangential direction of a concentric circle of the end faces; the conical flow divider (813) can spray water flow along the tangential direction of the conical flow divider (813), and the conical flow divider (813) can rotate in the radial direction.
CN201810283848.8A 2018-04-02 2018-04-02 Self-cleaning exhaust fan Active CN108506233B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810283848.8A CN108506233B (en) 2018-04-02 2018-04-02 Self-cleaning exhaust fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810283848.8A CN108506233B (en) 2018-04-02 2018-04-02 Self-cleaning exhaust fan

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CN108506233A CN108506233A (en) 2018-09-07
CN108506233B true CN108506233B (en) 2020-09-22

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109372776A (en) * 2018-11-26 2019-02-22 黄莲英 A kind of indood ventilation fan that leaving area is big
CN110985418B (en) * 2019-12-27 2021-06-01 广东朗迪格林特电器有限公司 Vibration reduction type axial flow fan with protection function
CN113279991A (en) * 2021-06-11 2021-08-20 南通安泰风机有限公司 Exhaust fan convenient to clean flabellum

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11235558A (en) * 1998-02-20 1999-08-31 Yoshio Iwase Cleaning brush device for electrical parts
CN2844747Y (en) * 2004-10-03 2006-12-06 殷国秋 Automatic cleaning mechanism of air-purifying exchanger
CN101169119A (en) * 2007-12-06 2008-04-30 邢台职业技术学院 Air-supply arrangement
CN105134624A (en) * 2015-08-18 2015-12-09 蚌埠市拓坚机电有限公司 Bidirectional negative pressure draught fan

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11235558A (en) * 1998-02-20 1999-08-31 Yoshio Iwase Cleaning brush device for electrical parts
CN2844747Y (en) * 2004-10-03 2006-12-06 殷国秋 Automatic cleaning mechanism of air-purifying exchanger
CN101169119A (en) * 2007-12-06 2008-04-30 邢台职业技术学院 Air-supply arrangement
CN105134624A (en) * 2015-08-18 2015-12-09 蚌埠市拓坚机电有限公司 Bidirectional negative pressure draught fan

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