CN109372766A - A kind of smoke exhaust fan - Google Patents
A kind of smoke exhaust fan Download PDFInfo
- Publication number
- CN109372766A CN109372766A CN201811250462.3A CN201811250462A CN109372766A CN 109372766 A CN109372766 A CN 109372766A CN 201811250462 A CN201811250462 A CN 201811250462A CN 109372766 A CN109372766 A CN 109372766A
- Authority
- CN
- China
- Prior art keywords
- blower housing
- fan blade
- smoke exhaust
- transmission shaft
- exhaust fan
- 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
- 239000000779 smoke Substances 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000001629 suppression Effects 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000003517 fume Substances 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Polymers C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials 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
- F04D29/40—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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- 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
Abstract
A kind of smoke exhaust fan, including Blower Housing, support rod, fan blade transmission shaft, fan blade, motor and fire suppression mechanism, air inlet and air outlet are respectively arranged on the two relative side of Blower Housing, the bottom of Blower Housing is fixed on a bottom plate, support rod is fixed in Blower Housing vertically, and the free end of support rod connects fan blade transmission shaft, fan blade transmission shaft is horizontally installed at the free end of support rod, and fan blade transmission shaft is provided with fan blade close to the end of air inlet side, motor is fixedly mounted on the lateral wall at the top of Blower Housing, the output shaft of motor passes through Blower Housing and is set with a first bevel gear in end, first bevel gear engages connection with the second bevel gear being sleeved on fan blade transmission shaft, fire suppression mechanism is fixed on bottom plate.The temperature of motor, improves work efficiency, and fire suppression mechanism is arranged to carry out cooling fire extinguishing when this smoke exhaust fan reduces work by electric machine external.
Description
Technical field
The present invention relates to fire-fighting equipment technical field more particularly to a kind of smoke exhaust fans.
Background technique
Smoke exhaust fan is a kind of machinery that can drain the peculiar smell generated in interior, high temperature, soot gas rapidly, the machine
Device feature is that high temperature resistance is good, high-efficient, and the type of blower has centrifugal blower, axial flow blower, centrifugal blower, axis stream wind,
It is suitble to small big machine according to the selection of the deployment scenarios of space size and enclosure.Existing smoke exhaust fan when in use, motor
It is usually set along in discharge flue with fan blade, there are a large amount of hot winds in channel when due to smoke evacuation, to the working efficiency of motor
It impacts, and existing smoke exhaust fan functional structure is limited, is unfavorable for cooling fire extinguishing.
Summary of the invention
The present invention provides a kind of smoke exhaust fan, by by motor be arranged outside Blower Housing, increase fire suppression mechanism with
A large amount of hot winds when solving smoke evacuation of the existing technology in channel influence that motor working efficiency, that smoke exhaust fan has a single function is unfavorable
In the technical issues of the putting out a fire that cool down.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:
A kind of smoke exhaust fan, including Blower Housing, support rod, fan blade transmission shaft, fan blade, motor and fire suppression mechanism,
Air inlet and air outlet are respectively arranged on the two relative side of Blower Housing, the bottom of Blower Housing is fixed on one
On bottom plate,
Support rod is fixed in Blower Housing vertically, and the free end of support rod connects fan blade transmission shaft,
Fan blade transmission shaft is horizontally installed at the free end of support rod, and fan blade transmission shaft is close to the end of air inlet side
Fan blade is provided at portion,
Motor is fixedly mounted on the lateral wall at the top of Blower Housing, and the output shaft of motor passes through Blower Housing and in end
Place is set with a first bevel gear, and first bevel gear engages connection with the second bevel gear being sleeved on fan blade transmission shaft,
Fire suppression mechanism is fixed on bottom plate.
A kind of smoke exhaust fan using the above structure can be effectively reduced by motor setting in smoke evacuation hull outside
The temperature of motor when smoke exhaust fan works, improves smoke exhaust efficiency；The function that fire suppression mechanism increases smoke exhaust fan is set, is passed through
Sprinkling water mist carries out cooling fire extinguishing.
Further, fire suppression mechanism includes Emergent water tank, drawing liquid pump and spray head, and Emergent water tank is fixed on bottom plate, drawing liquid
Pump is arranged in Emergent water tank, and the outlet conduit of drawing liquid pump pierces into shell and the nozzle of outlet conduit is provided with against air inlet
Spray head.
It further, further include controller and smokescope sensor, the outside at the top of Blower Housing is arranged in controller
On wall, smokescope sensor is arranged on Blower Housing and is located at air inlet, smokescope sensor and controller it is defeated
Enter end connection, the output end connection of motor and controller.Smokescope sensor is set and detects smokescope, and signal is transmitted
To controller, controller control electric motor starting is discharged fume, and realizes automation smoke evacuation.
Further, controller is single-chip microcontroller.
Further, the air inlet of Blower Housing is communicated with one in horn-like conflux cover, and the small end opening of conflux cover connects
It connects on Blower Housing, the big end opening of conflux cover is arranged outwardly.Conflux cover, which is arranged, can increase the soakage of flue gas.
Further, the air inlet of Blower Housing is provided with strainer.Setting strainer is filtered impurity, can keep away
The sundries for exempting to suck subsidiary Mars leads to fire spreading.
Further, the bottom of Blower Housing is fixed on bottom plate by cushion socket.Setting cushion socket can reduce motor
The vibration generated when work improves the service life of smoke exhaust fan.
Further, heat resistant coating is provided on the inner wall of Blower Housing.
Compared with prior art, the beneficial effect of smoke exhaust fan provided by the invention is: by dropping electric machine external
The temperature of motor, improves work efficiency when low work；Cooling fire extinguishing is carried out by the way that fire suppression mechanism is arranged；By the way that conflux is arranged
The soakage that cover increases flue gas accelerates flue gas velocity；By increasing strainer filtering impurity；Motor shake is reduced by setting cushion socket
The dynamic influence to blower, provides the service life of blower；Automation smoke evacuation is realized by setting smoke sensor device and controller.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of smoke exhaust fan of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiment of the present invention, the common skill in this field
Art personnel every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1
As shown in Figure 1, a kind of smoke exhaust fan, including bottom plate 8, Blower Housing 1, support rod 3, fan blade transmission shaft 4, wind
Leaf 5, motor 6 and fire suppression mechanism 10, there are two spring shock absorption seat 12, spring shock absorption seat 12 connects the two sides fixed setting on bottom plate 8
Blower Housing 1 is connect, the bottom of Blower Housing 1 is fixedly connected on spring shock absorption seat 12, on the two relative side of Blower Housing 1
It is respectively arranged with air inlet 1-1 and air outlet 1-2, the strainer 5 of an impurity screening, and air inlet 1-1 are provided at air inlet 1-1
Place is communicated with one in horn-like conflux cover 11, and the small end opening of conflux cover 11 is connected on Blower Housing 1, and 11 big end of conflux cover is opened
Mouth is arranged outwardly, can so increase the soakage of flue gas；
Servo motor 6 is provided on the lateral wall at 1 top of Blower Housing, the output shaft 6-1 of servo motor 6 passes through Fan casing
Body 1 and first bevel gear 7 is set in end；
It is provided with heat resistant coating on the inner wall of Blower Housing 1 to protect Blower Housing, increases service life, Blower Housing 1
Interior bottom is vertically arranged with two support rods 3 along Blower Housing length direction, is rotated at the top of support rod 3 by bearing block 2
A fan blade transmission shaft 4 is connected, fan blade transmission shaft 4 is horizontally installed on the top of two support rods and fan blade transmission shaft 4 close to air inlet
It is provided with fan blade 5 on the end of the side 1-1, is located between two support rods 3 on fan blade transmission shaft 4 and is set with one second cone tooth
Wheel 9, second bevel gear 9 is meshed with first bevel gear 7, and second bevel gear 9 can be improved mechanism between two support rods 3
Stability, rotated convenient for fan blade transmission shaft 4；
The smoke exhaust fan of the present embodiment further includes fire suppression mechanism 10, and fire suppression mechanism 10 includes Emergent water tank 10-1, takes out
Liquid pump 10-2 and spray head 10-3, Emergent water tank 10-1 are fixed on bottom plate 8, and drawing liquid pump 10-2 is arranged in Emergent water tank 10-1,
The nozzle that the outlet conduit 10-4 of drawing liquid pump 10-2 pierces into shell 1 and outlet conduit 10-4 is provided with the spray against air inlet 1-1
Head 10-3.
Smoke exhaust fan provided in this embodiment is fixedly mounted on workbench by screw 8-1.It needs to discharge fume
When, start servo motor 6, the output shaft 6-1 rotation of servo motor 6 drives first bevel gear 7 to rotate, second bevel gear 9 passes through
Engagement between first bevel gear 7 drives fan blade transmission shaft 4 to rotate, so that fan blade 5 rotates, extracts smog, smog enters poly-
Stream cover 11 is completely cut off after impurity by strainer 5 and enters smoke evacuation shell 3 and smog is discharged from air outlet 1-2；Start drawing liquid pump
10-2 extracts the water in Emergent water tank 10-1 by drawing liquid pump 10-2, and water flow is sprayed from spray head 10-3 by liquid-transport pipe-line 10-4
It spills and carries out cooling fire extinguishing.
Embodiment 2
It is substantially the same manner as Example 1, except that: it further include controller 13 and smokescope sensor 14, controller
13 are arranged on the lateral wall at 1 top of Blower Housing, and smokescope sensor 14 is arranged on conflux cover 11, smokescope sensing
Device 14 is connect with the input terminal of controller 13, and servo motor 6 is connect with the output end of controller 13, and controller is in the present embodiment
Single-chip microcontroller, model STC89C52RC-40I-PDIP40, the model MQ-2 that smokescope sensor 14 uses.
Smoke exhaust fan provided in this embodiment is fixedly mounted on workbench by screw 8-1.In use, logical
It crosses smokescope sensor 2 and detects smokescope, concentration signal is transferred to single-chip microcontroller, monolithic when smokescope is more than setting value
Machine starts servo motor 6 and drawing liquid pump 10-2, and the output shaft 6-1 rotation of servo motor 6 drives first bevel gear 7 to rotate, and second
Bevel gear 9 passes through the engagement between first bevel gear 7 and fan blade transmission shaft 4 is driven to rotate, so that fan blade 9 rotates, extracts
Smog, smog enter conflux cover 11, are completely cut off after impurity by strainer 5 and enter smoke evacuation shell 3 and smog is discharged, pass through drawing liquid
The water in 10-2 extraction Emergent water tank 10-1 is pumped, water flow is sprayed out from spray head 10-3 by liquid-transport pipe-line 10-4 to cool down
Fire extinguishing.
Claims (8)
1. a kind of smoke exhaust fan, it is characterised in that: including Blower Housing (1), support rod (3), fan blade transmission shaft (4), wind
Leaf (5), motor (6) and fire suppression mechanism (10),
Air inlet (1-1) and air outlet (1-2) are respectively arranged on the two relative side of Blower Housing (1), Blower Housing (1)
Bottom is fixed on a bottom plate (8),
Support rod (3) is fixed at vertically in Blower Housing (1), and the free end of support rod (3) connects fan blade transmission shaft
(4),
Fan blade transmission shaft (4) is horizontally installed at the free end of support rod (3), and fan blade transmission shaft (4) is close to air inlet (1-
1) end of side is provided with fan blade (5),
Motor (6) is fixedly mounted on the lateral wall at the top of Blower Housing (1), and the output shaft (6-1) of motor (6) passes through Fan casing
Body (1) and be set with a first bevel gear (7) in end, first bevel gear (7) be sleeved on fan blade transmission shaft (4) the
Two bevel gears (9) engagement connection,
Fire suppression mechanism (10) is fixed on bottom plate (8).
2. a kind of smoke exhaust fan according to claim 1, it is characterised in that: fire suppression mechanism (10) includes Emergent water tank
(10-1), drawing liquid pump (10-2) and spray head (10-3),
Emergent water tank (10-1) is fixed on bottom plate (8),
In Emergent water tank (10-1), the outlet conduit (10-4) of drawing liquid pump (10-2) pierces into shell for drawing liquid pump (10-2) setting
(1) in and the nozzle of outlet conduit (10-4) is provided with the spray head (10-3) against air inlet (1-1).
3. a kind of smoke exhaust fan described in any one of -2 claims according to claim 1, it is characterised in that: further include control
Device (13) processed and smokescope sensor (14), controller (13) are arranged on the lateral wall at the top of Blower Housing (1), and smog is dense
Sensor (14) are spent to be arranged on Blower Housing (1) and be located at air inlet (1-1),
Smokescope sensor (14) is connect with the input terminal of controller (13), and the output end of motor (6) and controller (13) connects
It connects.
4. a kind of smoke exhaust fan according to claim 3, it is characterised in that: controller (13) is single-chip microcontroller.
5. a kind of smoke exhaust fan according to claim 1 to 2, it is characterised in that: the air inlet (1- of Blower Housing (1)
1) place is communicated with one in horn-like conflux cover (11), and conflux cover (11) small end opening is connected on Blower Housing (1), conflux cover
(11) big end opening is arranged outwardly.
6. a kind of smoke exhaust fan according to claim 1, it is characterised in that: in the air inlet (1- of Blower Housing (1)
1) place is provided with strainer (5).
7. a kind of smoke exhaust fan according to claim 1, it is characterised in that: the bottom of Blower Housing (1) is by subtracting
Shake seat (12) is fixed on bottom plate (8).
8. a kind of smoke exhaust fan according to claim 1, it is characterised in that: be arranged on the inner wall of Blower Housing (1)
There is heat resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250462.3A CN109372766A (en) | 2018-10-25 | 2018-10-25 | A kind of smoke exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250462.3A CN109372766A (en) | 2018-10-25 | 2018-10-25 | A kind of smoke exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372766A true CN109372766A (en) | 2019-02-22 |
Family
ID=65401320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811250462.3A Pending CN109372766A (en) | 2018-10-25 | 2018-10-25 | A kind of smoke exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544801A (en) * | 2020-05-16 | 2020-08-18 | 北京博纳菲德科技有限公司 | Automatic fire extinguishing device suitable for electrical equipment |
| CN113245083A (en) * | 2021-04-27 | 2021-08-13 | 翁玉庆 | Water storage spraying impeller mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978818Y (en) * | 2006-11-02 | 2007-11-21 | 南京工业职业技术学院 | Portable cool fog fan |
| CN102705910A (en) * | 2012-06-07 | 2012-10-03 | 广东美的制冷设备有限公司 | Indoor unit of air conditioner |
| CN205533312U (en) * | 2016-02-22 | 2016-08-31 | 中融工业集团股份有限公司 | Fire control high temperature special blower that discharges fume |
| KR20180007802A (en) * | 2016-07-14 | 2018-01-24 | 윤지훈 | Electric fan having filter |
| CN207673583U (en) * | 2017-12-26 | 2018-07-31 | 东营市兴宇机电设备有限公司 | A kind of centrifugal smoke exhaust fan |
| CN207960990U (en) * | 2018-03-10 | 2018-10-12 | 山东科技大学 | A kind of smoke exhaust fan |
| CN209414205U (en) * | 2018-10-25 | 2019-09-20 | 南京工业职业技术学院 | A kind of smoke exhaust fan |
-
2018
- 2018-10-25 CN CN201811250462.3A patent/CN109372766A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978818Y (en) * | 2006-11-02 | 2007-11-21 | 南京工业职业技术学院 | Portable cool fog fan |
| CN102705910A (en) * | 2012-06-07 | 2012-10-03 | 广东美的制冷设备有限公司 | Indoor unit of air conditioner |
| CN205533312U (en) * | 2016-02-22 | 2016-08-31 | 中融工业集团股份有限公司 | Fire control high temperature special blower that discharges fume |
| KR20180007802A (en) * | 2016-07-14 | 2018-01-24 | 윤지훈 | Electric fan having filter |
| CN207673583U (en) * | 2017-12-26 | 2018-07-31 | 东营市兴宇机电设备有限公司 | A kind of centrifugal smoke exhaust fan |
| CN207960990U (en) * | 2018-03-10 | 2018-10-12 | 山东科技大学 | A kind of smoke exhaust fan |
| CN209414205U (en) * | 2018-10-25 | 2019-09-20 | 南京工业职业技术学院 | A kind of smoke exhaust fan |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111544801A (en) * | 2020-05-16 | 2020-08-18 | 北京博纳菲德科技有限公司 | Automatic fire extinguishing device suitable for electrical equipment |
| CN113245083A (en) * | 2021-04-27 | 2021-08-13 | 翁玉庆 | Water storage spraying impeller mechanism |
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