CN113339300A - Integrated air supply and exhaust fan - Google Patents
Integrated air supply and exhaust fan Download PDFInfo
- Publication number
- CN113339300A CN113339300A CN202110686590.8A CN202110686590A CN113339300A CN 113339300 A CN113339300 A CN 113339300A CN 202110686590 A CN202110686590 A CN 202110686590A CN 113339300 A CN113339300 A CN 113339300A
- Authority
- CN
- China
- Prior art keywords
- fan
- air
- outer shell
- pipe
- base body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 30
- 230000005291 magnetic effect Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
- F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Abstract
The invention discloses an integrated air supply and exhaust fan, which comprises an outer shell, a rotor base body, a bearing component, a power supply system, a fan inner tube, a plurality of stator cores and windings, a plurality of fan blades and a plurality of permanent magnet magnetic poles, wherein the rotor base body is arranged on the outer shell; the outer shell, the rotor base body, the bearing component and the fan inner tube are distributed in sequence from outside to inside, each stator core and each winding are sequentially fixed on the inner wall of the outer shell, each permanent magnet magnetic pole is sequentially fixed on the outer wall of the rotor base body, the bearing component is fixed on the outer wall of the fan inner tube, one end of each fan blade is connected with the inner wall of the rotor base body, the other end of each fan blade is connected with the bearing component to form an annular gas flow channel, and the power supply system is connected with the stator cores and the windings in the windings.
Description
Technical Field
The invention belongs to the field of machinery, and relates to an integrated air supply and exhaust fan.
Background
The ventilation fan is suitable for various industries, can achieve the effects of room ventilation, temperature reduction and the like through mechanical ventilation, can properly refresh gas in a room at a certain ventilation rate through ventilation, can achieve the effects of maintaining fresh air, reducing the concentration of harmful gas in the room and the like, and is particularly suitable for structures which are likely to generate harmful gas, such as a storage battery room, a hydrogen storage room, a radioactive waste storage room and the like. However, at present, air supply and exhaust pipelines designed for a room are both independently arranged, and are provided with an air supply machine or an exhaust fan, or both the air supply machine and the exhaust fan, and the mode needs to open at least two air exchange channels in the room, so that the structure is complex. In order to achieve the required ventilation volume and room pressure, the air supply pipeline and the exhaust pipeline need to be jointly debugged at the same time, and the difficulty is high. In addition, the arrangement mode increases the number of pipelines, air valves and fans, and increases the maintenance cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an integrated air supply and exhaust fan, which has low maintenance cost and simple structure.
In order to achieve the purpose, the chemical air supply and exhaust fan comprises an outer shell, a rotor base body, a bearing component, a power supply system, a fan inner tube, a plurality of stator cores and windings, a plurality of fan blades and a plurality of permanent magnet magnetic poles;
the outer shell, the rotor base body, the bearing component and the fan inner tube are sequentially distributed from outside to inside, each stator core and each winding are sequentially fixed on the inner wall of the outer shell, each permanent magnet magnetic pole is sequentially fixed on the outer wall of the rotor base body, the bearing component is fixed on the outer wall of the fan inner tube, one end of each fan blade is connected with the inner wall of the rotor base body, the other end of each fan blade is connected with the bearing component to form an annular gas flow channel, and the power supply system is connected with the stator cores and the windings in the windings.
The device also comprises a plurality of motor cooling blades; and each motor cooling blade is fixed on the outer wall of the rotor base body.
And the power supply system is connected with the stator iron core and the winding in the winding through the junction box.
During operation, the inner pipe of the fan is fixed relative to the outer shell of the fan, and the rotor base body, the bearing part and the fan blade rotate along the axis of the inner pipe of the fan, so that gas in the annular gas flow channel is driven by the fan blade to flow.
The structure also comprises an air suction opening connecting pipe, a structure room wall and an air outlet connecting pipe;
the suction port connecting pipe is connected with the air outlet connecting pipe through the fan inner pipe, and the outer shell is fixed in a through hole in a wall body of a room of a structure.
An air inlet protective net is arranged on one side between the outer shell and the inner pipe of the fan, and an air outlet protective net is arranged on the other side between the outer shell and the inner pipe of the fan.
The structure also comprises an air inlet connecting pipe, an air outlet connecting pipe and a room wall of the structure;
the air inlet connecting pipe is communicated with the air outlet connecting pipe through the fan inner pipe, the outer shell is fixed in a through hole in a wall body of a room of a structure, when the air conditioner works, air in an area to be air supplied is discharged through the fan blade, negative pressure is formed in the area to be air supplied, external air flows into the fan inner pipe through the air inlet connecting pipe due to the negative pressure in the area to be air supplied, and then enters the area to be air supplied through the air outlet connecting pipe.
The air conditioner also comprises a sleeve type air pipe assembly, wherein the sleeve type air pipe assembly comprises an inner pipe connected with the fan and an outer shell connected with the fan; the shell body of the fan in the casing pipe type air pipe assembly is in butt joint with the shell body, and the inner pipe of the fan is in butt joint with the inner pipe of the fan.
The invention has the following beneficial effects:
when the integrated air supply and exhaust fan is operated specifically, one end of each fan blade is connected with the inner wall of the rotor base body, the other end of each fan blade is connected with the bearing part to form an annular gas flow channel, and meanwhile, the bearing part is sleeved on the outer wall of the inner pipe of the fan to form a double-airflow channel, so that the integrated arrangement of the air supply and exhaust fan is realized, the occupied space and the number of holes in a wall body are reduced, the structure is simple, auxiliary matched pipelines and valve parts are fewer, and the integrated air supply and exhaust fan has the characteristics of low cost, flexible operation, convenience in maintenance and the like; meanwhile, the movable air duct can be vertically arranged on a wall body, and can also be matched with a sleeve type air duct assembly for use, so that the movable air duct can be used in a movable manner or can be independently installed for use, is convenient to install and use, and can be used in various occasions.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an installation drawing of the first embodiment;
FIG. 4 is an installation view of the second embodiment;
fig. 5 is an installation diagram of the third embodiment.
The structure comprises a shell 1, a rotor base 2, a stator core and a winding 3, a permanent magnet magnetic pole 4, a motor cooling blade 5, a bearing part 6, a fan blade 7, a junction box 8, a power supply system 9, a fan inner tube 10, an inlet air flow 11, an outlet air flow 12, a motor cavity cooling air flow 13, an air inlet protective net 14, an air outlet protective net 15, a structure room wall 16, an air suction opening connecting pipe 17, an air outlet connecting pipe 18, a fan inner tube 19, a fan outer shell 20, an air inlet connecting pipe 21 and an air outlet connecting pipe 22.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. 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.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1 and 2, the integrated air blower of the present invention includes an outer casing 1, a rotor base 2, a bearing component 6, a junction box 8, a power system 9, a blower inner tube 10, a plurality of stator cores and windings 3, a plurality of motor cooling blades 5, a plurality of blower blades 7, and a plurality of permanent magnet poles 4;
the outer shell 1, the rotor base body 2, the bearing part 6 and the fan inner tube 10 are distributed from outside to inside in sequence, each stator core and the winding 3 are fixed on the inner wall of the outer shell 1 in sequence, each permanent magnet magnetic pole 4 is fixed on the outer wall of the rotor base body 2 in sequence, the bearing part 6 is fixed on the outer wall of the fan inner tube 10, one end of each fan blade 7 is connected with the inner wall of the rotor base body 2, the other end of each fan blade 7 is connected with the bearing part 6 to form an annular gas flow channel, the power supply system 9 is connected with the stator cores and the windings in the windings 3 through a junction box 8, and the motor cooling blades 5 are fixed on the rotor base body 2.
In operation, the fan inner tube 10 is fixed relative to the fan outer shell 1, the rotor base body 2, the bearing part 6 and the fan blades 7 rotate along the axis of the fan inner tube 10, and the air in the annular air flow channel is driven by the fan blades 7 to generate flow.
Example one
When positive pressure needs to be formed in a room, a fan is installed as shown in fig. 3, a suction port connecting pipe 17 is connected with an exhaust port connecting pipe 18 through a fan inner pipe 10, an outer shell 1 is fixed in a through hole on a building room wall 16, an air inlet protective net 14 is arranged on one side between the outer shell 1 and the fan inner pipe 10, and an air outlet protective net 15 is arranged on the other side between the outer shell 1 and the fan inner pipe 10.
During operation, the fan blade 7 feeds air into the room to enable the room to form positive pressure, the positive pressure in the room enables the air at the top in the room to flow into the suction port connecting pipe 17, then the air enters the exhaust port connecting pipe 18 through the fan inner pipe 10, and finally the air is exhausted out of the room.
Example two
When negative pressure needs to be formed in a room, the blower is installed as shown in fig. 4, specifically, the air inlet connecting pipe 21 is communicated with the air outlet connecting pipe 22 through the blower inner pipe 10, and the outer shell 1 is fixed in a through hole on the wall 16 of the room of the structure.
The air in the room is exhausted by the fan blade 7 to form negative pressure, and the negative pressure in the room enables the outside air to flow into the fan inner pipe 10 through the air inlet connecting pipe 21 and then enter the room through the air outlet connecting pipe 22.
EXAMPLE III
When the fan is not beneficial to being installed on a wall body or needing to be moved for use, the fan can be matched with a sleeve type air pipe assembly for use, a fan inner pipe 19 in the sleeve type air pipe assembly is in butt joint with a fan inner pipe 10, the fan and the sleeve are installed as shown in figure 5, specifically, a fan outer shell body 20 in the sleeve type air pipe assembly is in butt joint with an outer shell body 1, the fan inner pipe 19 is in butt joint with the fan inner pipe 10, sleeve type air pipes can be installed on two sides of the fan, positive and negative pressure control of a room can be achieved through different configuration combinations, arrangement of air inlets or air outlets in different positions in the room can also be achieved, and the fan has high operation flexibility.
alternating current output by a power supply system 9 is distributed to the stator cores and the windings 3 through the junction box 8, the permanent magnet magnetic poles 4 are symmetrically arranged outside the rotor base body 2, when the alternating current passes through the stator cores and the windings 3, the stator cores in the stator cores and the windings 3 generate a rotating electromagnetic field, and the permanent magnet magnetic poles 4 drive the rotor base body 2 to rotate under the action of the rotating electromagnetic field, so that the fan blades 7 rotate to generate driving force.
In the present invention, the stator core and the winding 3, 4 pairs of the permanent magnet magnetic poles 4 may be provided with different pairs of the stator core and the winding 3 and the permanent magnet magnetic poles 4 as necessary. The stator core and winding 3, the permanent magnet ferromagnetic pole 4 and related components are heated under the action of electromagnetic force, friction force and the like in the operation process, in order to provide cooling for motor components, motor cooling blades 5 are symmetrically arranged on the rotor base body 2, and when the fan operates, the motor cooling blades 5 rotate simultaneously to ventilate and cool the components in the motor cavity.
Claims (8)
1. The integrated air supply and exhaust fan is characterized by comprising an outer shell (1), a rotor base body (2), a bearing component (6), a power supply system (9), a fan inner tube (10), a plurality of stator cores and windings (3), a plurality of fan blades (7) and a plurality of permanent magnet magnetic poles (4);
the fan comprises an outer shell (1), a rotor base body (2), a bearing component (6) and a fan inner tube (10), wherein the outer shell (1), the rotor base body (2), the bearing component (6) and a winding (3) are sequentially distributed from outside to inside, each stator core and the winding (3) are sequentially fixed on the inner wall of the outer shell (1), each permanent magnet magnetic pole (4) is sequentially fixed on the outer wall of the rotor base body (2), the bearing component (6) is fixed on the outer wall of the fan inner tube (10), one end of each fan blade (7) is connected with the inner wall of the rotor base body (2), the other end of each fan blade (7) is connected with the bearing component (6) to form an annular gas flow channel, and a power supply system (9) is connected with the stator cores and the windings in the winding (3).
2. The integrated ventilator of claim 1 further comprising a plurality of motor cooling blades (5); each motor cooling blade (5) is fixed on the outer wall of the rotor base body (2).
3. The integrated ventilator of claim 1, wherein the power supply system (9) is connected to the stator core and the windings in the windings (3) via a terminal box (8).
4. The integrated air blower according to claim 1, wherein, in operation, the blower inner tube (10) is fixed relative to the blower outer shell (1), and the rotor base body (2), the bearing member (6) and the blower blades (7) are rotated along the axis of the blower inner tube (10), so that the air in the annular air flow passage is driven by the blower blades (7) to generate the flow.
5. The integrated air supply and exhaust fan as claimed in claim 1, further comprising an air suction port connection pipe (17), a structure room wall (16) and an air exhaust port connection pipe (18);
the suction port connecting pipe (17) is connected with the exhaust port connecting pipe (18) through the fan inner pipe (10), and the outer shell (1) is fixed in a through hole on a building room wall (16).
6. The integrated air supply and exhaust fan of claim 5, characterized in that an air inlet protective net (14) is arranged on one side between the outer shell (1) and the fan inner pipe (10), and an air outlet protective net (15) is arranged on the other side between the outer shell (1) and the fan inner pipe (10).
7. The integrated air blower of claim 1, further comprising an air inlet connection pipe (21), an air outlet connection pipe (22) and a structure room wall (16);
the air inlet connecting pipe (21) is communicated with the air outlet connecting pipe (22) through the fan inner pipe (10), the outer shell (1) is fixed in a through hole in a building room wall body (16), during work, air in an area to be air-supplied is discharged through the fan blades (7), negative pressure is formed in the area to be air-supplied, and external air flows into the fan inner pipe (10) through the air inlet connecting pipe (21) and then enters the area to be air-supplied through the air outlet connecting pipe (22) due to the negative pressure in the area to be air-supplied.
8. The integrated ventilator of claim 1 further comprising a casing-type duct assembly, wherein the casing-type duct assembly comprises a blower-receiving inner duct (19) and a blower-receiving outer housing (20); a fan connecting outer shell (20) in the sleeve type air pipe assembly is in butt joint with the outer shell (1), and a fan connecting inner pipe (19) is in butt joint with a fan inner pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686590.8A CN113339300A (en) | 2021-06-21 | 2021-06-21 | Integrated air supply and exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686590.8A CN113339300A (en) | 2021-06-21 | 2021-06-21 | Integrated air supply and exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339300A true CN113339300A (en) | 2021-09-03 |
Family
ID=77478341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110686590.8A Pending CN113339300A (en) | 2021-06-21 | 2021-06-21 | Integrated air supply and exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113339300A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3331302A (en) * | 1965-02-15 | 1967-07-18 | Heddernheimer Metallwarenfab | Ventilating device |
| CN2481882Y (en) * | 2001-03-23 | 2002-03-13 | 方灿榆 | Pipeline type multipurpose two-way scavenger fan |
| CN2559812Y (en) * | 2002-04-29 | 2003-07-09 | 付东 | Bidirectional ventilating fan |
| CN2578711Y (en) * | 2002-08-30 | 2003-10-08 | 魏忠英 | Air exchanging fans |
| US20080085189A1 (en) * | 2006-10-04 | 2008-04-10 | Sunonwealth Electric Machine Industry Co., Ltd. | Micro fan |
| CN103343746A (en) * | 2013-06-28 | 2013-10-09 | 周峰 | Modified axial flow fan |
| CN205638974U (en) * | 2016-05-19 | 2016-10-12 | 开原市鼓引风机厂 | Air feed integral type of induced drafting axial fan |
| CN213206018U (en) * | 2020-07-15 | 2021-05-14 | 浙江安浮航空科技有限公司 | Axial-flow magnetic suspension shaftless fan |
-
2021
- 2021-06-21 CN CN202110686590.8A patent/CN113339300A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3331302A (en) * | 1965-02-15 | 1967-07-18 | Heddernheimer Metallwarenfab | Ventilating device |
| CN2481882Y (en) * | 2001-03-23 | 2002-03-13 | 方灿榆 | Pipeline type multipurpose two-way scavenger fan |
| CN2559812Y (en) * | 2002-04-29 | 2003-07-09 | 付东 | Bidirectional ventilating fan |
| CN2578711Y (en) * | 2002-08-30 | 2003-10-08 | 魏忠英 | Air exchanging fans |
| US20080085189A1 (en) * | 2006-10-04 | 2008-04-10 | Sunonwealth Electric Machine Industry Co., Ltd. | Micro fan |
| CN103343746A (en) * | 2013-06-28 | 2013-10-09 | 周峰 | Modified axial flow fan |
| CN205638974U (en) * | 2016-05-19 | 2016-10-12 | 开原市鼓引风机厂 | Air feed integral type of induced drafting axial fan |
| CN213206018U (en) * | 2020-07-15 | 2021-05-14 | 浙江安浮航空科技有限公司 | Axial-flow magnetic suspension shaftless fan |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210903 |