CN208703980U - Range hood's fender cigarette board drive arrangement and range hood - Google Patents
Range hood's fender cigarette board drive arrangement and range hood Download PDFInfo
- Publication number
- CN208703980U CN208703980U CN201820960220.2U CN201820960220U CN208703980U CN 208703980 U CN208703980 U CN 208703980U CN 201820960220 U CN201820960220 U CN 201820960220U CN 208703980 U CN208703980 U CN 208703980U
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- Prior art keywords
- range hood
- hole
- smoke
- driving device
- push rod
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 16
- 239000000779 smoke Substances 0.000 claims abstract description 127
- 230000004888 barrier function Effects 0.000 claims description 73
- 238000001914 filtration Methods 0.000 claims description 37
- 238000010276 construction Methods 0.000 claims description 23
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 241001233242 Lontra Species 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000010411 cooking Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
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- Ventilation (AREA)
Abstract
The utility model provides a range hood keep off cigarette board drive arrangement and range hood, drive arrangement is in including setting up drive thick stick and the telescopic setting in range hood's collection smoke cavity the straight push rod on the drive thick stick has seted up on range hood's panel structure and has been used for the via hole that straight push rod stretches out, the via hole is located range hood's oil strain otter board's top. The driving structure is simple and the cost is reduced by the driving lever arranged in the smoke collection cavity and the telescopic straight push rod, and the force of the straight push rod can directly act on the smoke baffle plate, so that the closing, the opening and the like of the smoke baffle plate are ensured, and the pushing accuracy is improved; the through hole is arranged above the oil filter screen plate of the range hood, the arrangement space of the screen plate hole occupied by the through hole is avoided, the area of the oil filter screen plate is favorably ensured, the problem that the oil filter screen plate is difficult to disassemble due to the fact that the through hole is arranged on the oil filter screen plate is avoided, and oil stain condensation on the straight push rod is increased.
Description
Technical field
The utility model belongs to range hood technical field, and in particular to a kind of smoke barrier driving device of range hood,
And the range hood with the smoke barrier driving device.
Background technique
Range hood has become one of machine for kitchen use equipment indispensable in Modern Family.Usual range hood includes top
Suction and side-suction type, the principle that the range hood of top suction type utilizes hot gas to rise, suction is generated when cooking to be risen naturally
Oil smoke, additionally due to it is clean and tidy light and handy, occupy little space the advantages that, it is and in an increasingly wide range of applications, but since it is dynamic
Power source farther out from hearth, reduces the suction effect of power source, oil smoke cannot exhaust completely；The range hood of side-suction type utilizes whirlpool
It is separate to flow wind pressure, will largely be absorbed apart from the closer oil smoke of hearth with form of arcs, the bad shadow to human health can be reduced
It rings, and power source is closer from hearth, will not substantially reduce the suction effect of power source.
Its is mounted against a wall for side extraction cooking fume extractor, and oil smoke head-on and from oblique enters smoke machine, and this avoid operators
Passively suck oil smoke；The panel of side extraction cooking fume extractor is generally inclined plate at present, is equipped with oil strain in the center of panel
Web plate, under the action of blower, oil smoke is after the oil filter hole of filtering screen, into smoke collecting chamber, and outdoor is discharged；In oil strain
The outside of web plate is equipped with the smoke barrier to be opened/closed for blocking oil cleaner screen.
Manually or electrically or pneumatically etc. modes realize the unlatching of smoke barrier or close the smoke barrier of existing kitchen ventilator
It closes.If by manually mode come closure or openness smoke barrier, then manpower just needs to overcome the gravity of smoke barrier and setting to exist
(resistance of the damper is typically larger than the gravity for being equal to smoke barrier to the resistance of damper on smoke barrier, and effect is to make to keep off cigarette
Plate realizes positioning at an arbitrary position), this kind of product cause user using when need to apply biggish power by hand, feel is bad,
Poor user experience.Therefore, the appearance of kitchen ventilator smoke barrier is realized by electric and pneumatic mode opens or closes.
There is movable fume guide mechanism as the Chinese invention patent of Patent No. ZL201020612195.2 discloses one kind
Kitchen ventilator, including shell, intelligent control unit, motor, air inlet, air inlet is equipped with collection cigarette panel, the collection cigarette panel
End is movably arranged at shell, and connecting rod, for movable rod that can be tortuous, one end of the connecting rod is set to collection cigarette panel, the other end and one
Variable transmission mechanism connection, although such kitchen ventilator can prevent return air taint of odour, protects kitchen environment, and makes to collect cigarette face
Plate closing keeps kitchen ventilator more beautiful and easy to clean, but such collection cigarette panel is controlled by motor and movable rod
Rotation, structure is complicated, higher to requirement on machining accuracy, if precision is inadequate, may cause collection cigarette panel can not completely close or
Person opens insufficient situation.
Summary of the invention
The utility model is directed to the above-mentioned problems in the prior art, provides a kind of smoke barrier driving dress of range hood
It sets, structure is simple, and driving force is big, and can realize that the movement of smoke barrier is accurate.
To reach above-mentioned technical purpose, the utility model is implemented with the following technical solutions:
A kind of smoke barrier driving device of range hood, including be arranged in the smoke collecting chamber of range hood driving thick stick, with
And the telescopic straight push rod being arranged on the driving thick stick, it offers on the panel construction of range hood and is directly pushed away for described
The via hole that bar stretches out, the via hole are located at the top of the filtering screen of range hood.
Further, lamp hole is offered on the panel construction, the via hole is located at the side of the lamp hole.
Further, the driving device further includes the first fixing seat being fixed on the inside of the smoke collecting chamber top plate, described
Driving thick stick is hinged in the first fixing seat.
Further, the driving device further includes being fixed on the second fixing seat of the inside of the smoke barrier, described straight
Push rod is hinged in the second fixing seat.
Further, the reinforcement edge to extend internally is equipped at the edge of the via hole.
Further, the via hole is waist round hole.
Further, it is offered on the panel construction for installing web plate hole described in filtering screen, in the web plate
The edge in hole is equipped with the installing frame to extend internally, and the filtering screen is fixed on the installing frame.
Further, it is equipped with snap-gauge in the lower end of the filtering screen, is equipped on the installing frame and matches with snap-gauge
Card hole.
Further, the via hole is connected with the web plate hole, and is equipped in the installing frame and is connected to the via hole
Escape groove.
Smoke barrier driving device based on above-mentioned range hood, the utility model also provide a kind of with the driving device
Range hood, structure is simple, and driving force is big, and can realize that the movement of smoke barrier is accurate.
A kind of range hood including smoke collecting chamber, the panel construction being arranged on front side of the smoke collecting chamber, is arranged in panel construction
On filtering screen and the smoke barrier to be opened/closed being covered on the outside of the filtering screen, further include for driving smoke barrier
Above-mentioned driving device.
The smoke barrier driving device of range hood provided by the utility model, by the driving thick stick that is arranged in smoke collecting chamber,
And telescopic straight push rod advantageously reduces cost, and the power of straight push rod can be acted on directly so that driving structure is simple
On smoke barrier, closing and opening of smoke barrier etc. are advantageously ensured that, and be conducive to the accuracy pushed；By being arranged
Hole is located at the top of the filtering screen of range hood, avoids setting via hole from occupying the installation space in web plate hole, advantageously ensures that filter
The area of oil network plate, and avoid for via hole being arranged on filtering screen, cause the disassembly of filtering screen difficult, and increase and directly push away
Greasy dirt condensation on bar etc..
After specific embodiment of the present utility model is read in conjunction with the figure, other features and advantages of the utility model will become
It obtains clearer.
Detailed description of the invention
The structural representation of one embodiment of the smoke barrier driving device for the range hood that Fig. 1 is proposed by the utility model
Figure；
Fig. 2 is the enlarged structure schematic diagram in Fig. 1 at the smoke collecting chamber of range hood；
Fig. 3 is the enlarged structure schematic diagram of a-quadrant in Fig. 2；
Fig. 4 is the schematic cross-sectional view in Fig. 2；
Fig. 5 is the enlarged structure schematic diagram of part-structure in Fig. 4；
Fig. 6 is the enlarged structure schematic diagram of B area in Fig. 5；
Fig. 7 is the main view in Fig. 2 at panel construction；
Fig. 8 is the structural schematic diagram in Fig. 2 after smoke barrier closing；
Fig. 9 is the enlarged structure schematic diagram in the region C in Fig. 8.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
In the description of the present invention, it should be noted that term "inner", "upper", "lower", "left", "right" etc. indicate
Orientation or positional relationship be positional relationship based on the figure, be merely for convenience of description of the present invention and simplification of the description, and
It is not that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.In addition, term " first ", " second ", " third " are used for description purposes only, and cannot manage
Solution is indication or suggestion relative importance.
- Fig. 9 refering to fig. 1 is one embodiment of the smoke barrier driving device for the range hood that the utility model is proposed,
A kind of side extraction cooking fume extractor includes main box 1, the smoke collecting chamber 2 positioned at 1 lower section of main box and setting in 2 front side of smoke collecting chamber
Panel construction 3, on panel construction 3 be equipped with filtering screen 4, be hinged with gear cigarette to be opened/closed in the top nose of smoke collecting chamber 2
Plate 5, smoke barrier 5 is for covering in 4 outside of filtering screen；It is additionally provided with the driving device 7 for driving smoke barrier 5.
In the present embodiment, referring to shown in Fig. 6 and Fig. 8, driving device 7 include the driving thick stick 72 being arranged in smoke collecting chamber 2, with
And the telescopic straight push rod 71 being arranged on driving thick stick 72, the mistake stretched out for straight push rod 71 is offered on panel construction 3
Hole 321, via hole 321 are located at the top of filtering screen 4.
In the present embodiment, by the driving thick stick 72 and telescopic straight push rod 71 being arranged in smoke collecting chamber 2, so that driving
Dynamic structure is simple, advantageously reduces cost, and the power of straight push rod 71 can act directly on smoke barrier 5, advantageously ensure that
The closing of smoke barrier 5 and opening etc., and be conducive to the accuracy pushed；It is located at range hood by the way that via hole 321 is arranged
The top of filtering screen 4 avoids setting via hole 321 from occupying the installation space in web plate hole, advantageously ensures that the face of filtering screen 4
Product, and avoid for via hole 321 being arranged on filtering screen, cause the disassembly of filtering screen 4 difficult, and increase on straight push rod 71
Greasy dirt condensation etc..
In the present embodiment, lamp hole is offered on the top of panel construction 3, via hole 321 is located at the side of lamp hole, and lamp plate 8 is pacified
Dress is fixed in lamp hole.Driving device 7 further includes the first fixing seat 73 being fixed on the inside of 2 top plate of smoke collecting chamber and is fixed on
Second fixing seat 74 of the inside of smoke barrier 5, driving thick stick 72 are hinged on 73 in the first fixing seat, and it is fixed that push rod 71 is hinged on second
On seat 74.During push rod 71 pushes smoke barrier 5 to open or close, the inclined direction of push rod 71 is changing always, this will
It asks and via hole 321 is being set as upper and lower elongated waist round hole；Preferably, the reinforcement edge to extend internally is equipped at the edge of via hole 321
322, be conducive to the intensity for increasing via hole 321.
It is shown in Figure 5 in the present embodiment, the web plate hole for installing filtering screen 4 is offered on panel construction 3,
Wherein lamp hole is located at the top in web plate hole.It is equipped with the L shape installing frame 36 to extend internally at the edge in web plate hole, filtering screen 4 can
It is detachably fixedly arranged on installing frame 36；Installing frame 36 is frame-shaped construction.
Shown in Figure 2 in the present embodiment, via hole 321 is connected with web plate hole, and is equipped with and via hole in installing frame 36
The escape groove 361 of 321 connections, so that via hole 321 to open up position downward as far as possible, advantageously allow push rod 71 and smoke barrier
Angle between 5 is near 90 DEG C, that is, the folder under 5 closed state of smoke barrier, between push rod 71 and the lower end of smoke barrier 5
Angle is less than 90 DEG C, and in 5 opening procedure of smoke barrier, the angle between push rod 71 and the lower end of smoke barrier 5 is gradually increased, and finally arrives
Up to smoke barrier 5 opening state when, angle between push rod 71 and the lower end of smoke barrier 5 is greater than 90 DEG C.Gear is pushed in order to reach
The most labour-saving state of cigarette plate 5, when the angle for being preferably provided at 5 Unscrew of smoke barrier is the half of its open angle, push rod 71
It is vertical with smoke barrier 5.
Shown in Figure 7 in the present embodiment, panel construction 3 has positioned at the curved panel 31 of lower part and superposed
Sloping desk 32 is equipped with filtering screen 4, before the top to be opened/closed for being hinged on smoke collecting chamber 2 of smoke barrier 5 on sloping desk 32
End；The lower part that panel construction 3 is arranged is curved panel 31, is had preferably along hood, convenient for oil smoke along cambered surface upwards,
Make oil smoke be easier to be sucked away, is conducive to the flue gas velocity, the efficiency that improve fume-exhausting, improves the ability of fume-exhausting；In smoke collecting chamber 2
Top nose be hinged with the smoke barrier 5 to be opened/closed for covering in the outside of sloping desk 32 and kept off when range hood is opened
Cigarette plate 3 is opened, and for oil smoke during elegant upwards, the oil smoke positioned at front side has excessive trend, oil smoke meeting excessive at this time
It is blocked by smoke deflector 3, forms turbulent flow area, oil smoke is finally siphoned away by range hood in this region reciprocating collision, reduces escaping for oil smoke
Ease, improves the fume-exhausting ability of oil smoke.
In the present embodiment, smoke barrier 5 has the closed state and opening state of covering filtering screen 4, in smoke barrier 5
It can stop to form negative pressure rope flow area between oil smoke, with sloping desk under opening state, public affairs can be stopped again in the off state
Peculiar smell inside total flue and range hood enters the room.Under 5 closed state of smoke barrier, smoke barrier 5 and curved panel 31
Upper end it is adjacent, so that the oil smoke of upwards can reach filtering screen 4 after 31 water conservancy diversion of curved panel
Outside, be conducive to being inhaled into for oil smoke.
In the present embodiment, smoke barrier 5 is the slab construction being hingedly arranged, and the size of curved panel 31 in above-below direction is equal to
Or the size less than smoke barrier 5 in above-below direction；Namely the size of about 5 smoke barrier is equal to or more than panel construction or more
The half of size, that is, the size of smoke barrier 5 are larger, the oil smoke of significantly more efficient block escape.Smoke barrier 5 is hinged on collection cigarette
The top nose of chamber 2, smoke barrier 5 move during opening and closing along circular arc path, wherein the extension of circular arc path, curved panel 31
Camber line and smoke barrier 5 surround turbulent flow area, since the size of smoke barrier 5 is larger, so that the volume of turbulent flow area is larger, are conducive to
More oil smoke enters turbulent flow area, reduces the escape of oil smoke.
It is shown in Figure 8 in the present embodiment, tangential direction and 5 closed state of smoke barrier at 31 upper extreme point of curved panel
Inclined direction it is identical, due to the oil smoke that arcuately the upward water conservancy diversion of panel 31 waves, under the action of inertia and negative pressure, into disturbing
Area is flowed, and then is entered in smoke collecting chamber 2.Under the closed state of smoke barrier 5, smoke barrier 5 is rearwardly and down tilted, smoke barrier 5 with
Angle between the horizontal top of smoke collecting chamber 2 is 50 DEG C~60 DEG C.Smoke barrier 5 open in the state of, smoke barrier 5 forward and to
Lower inclination, the angle between smoke barrier 5 and smoke collecting chamber horizontal top are 95 DEG C~100 DEG C, that is, smoke barrier 5 is being opened to perpendicular
Histogram continues starting rotation again backward, is conducive to the volume for increasing the turbulent flow area after smoke barrier 5 is opened, reduces the escape of oil smoke.
In the present embodiment, it is equipped with display unit 6 on smoke barrier 5, is equipped with display unit 6, setting in the inside of smoke barrier 5
Sloping desk 32 is recessed the holding tank for accommodating display unit 6, that is, sloping desk 32 concaves, and is conducive to accommodate
Display unit 6 is conducive to the volume for increasing turbulent flow area.Panel construction 3 further includes the inclined shore panel 33 positioned at upper end, works as gear
After cigarette plate 5 is closed, smoke barrier 5 is attached to the inclination angle under the outside of inclined shore panel 33, that is, 5 closed state of smoke barrier
It spends identical as the tilt angle of inclined shore panel 33.Angle between sloping desk 32 and horizontal plane is greater than inclined shore plate face
Angle between 33 and horizontal plane, smoke barrier 5 in the open state, oil smoke turbulent flow area collide, be conducive to increase web plate
The volume of the turbulent flow area on hole top, so that negative pressure of the oil smoke in collision steering and smoke collecting chamber 2 is through the outside spoke of filtering screen 4
It penetrates, so that the oil smoke in the turbulent flow area on web plate hole top is moved down and is inhaled into smoke collecting chamber 2.
In the present embodiment, referring to shown in Fig. 3 and Fig. 9, water is connected between inclined shore panel 33 and sloping desk 32
Flushconnection plate 34；Lower interconnecting piece 35 is equipped between sloping desk 32 and curved panel 31, lower interconnecting piece 35 is equipped with and arcwall face
The cooperation section 351 of the connection of plate 31 and the lower linkage section 352 that extension is rearwardly and down tilted along cooperation section 351, in smoke barrier 5
Under closed state, smoke barrier 5 is vertical with cooperation section 351.Lower linkage section 352 is directly adjacent with web plate hole, and installing frame 36 is frame shape
Structure, lower linkage section 352 are connect with the lower end frame of installing frame 36.It is rearwardly and down tilted and is set by linkage section 352 under being arranged
It sets, so that condensing in the oil droplet on filtering screen 4, is moved down along filtering screen 4, the lower end of installing frame 36 can be deposited in
What frame and lower linkage section 352 surrounded encloses in slot, and oil droplet drips downward into smoke collecting chamber 2 from slot is enclosed, and is specifically dropped in arcwall face
The inside of plate 31, and finally flow into lubricating cup；The lower linkage section 352 being obliquely installed in this way by setting, avoids filtering screen 4
On oil droplet be dropped in the outside of panel construction 3, and be conducive to increase apparent aesthetics.
In the present embodiment, filtering screen 4 is removably tilted in the web plate hole being fixed on sloping desk 32, filtering screen
4 with horizontally disposed upper surface 41 and the lower end surface 42 being obliquely installed, and wherein lower end surface is vertical with sloping desk 32 sets
It sets；Be conducive to installation, the disassembling section of filtering screen 4, improve operating efficiency；It is equipped with snap-gauge 43 in the lower end of filtering screen 4,
Installing frame 36 is equipped with the card hole to match with snap-gauge 43, and the upper end of filtering screen 4 is fixed by screws on installing frame 36.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model
Protect range.
Claims (10)
1. a kind of smoke barrier driving device of range hood, which is characterized in that including being arranged in the smoke collecting chamber of range hood
Driving thick stick and the telescopic straight push rod being arranged on the driving thick stick, open up useful on the panel construction of range hood
In the via hole that the straight push rod stretches out, the via hole is located at the top of the filtering screen of range hood.
2. driving device according to claim 1, which is characterized in that lamp hole is offered on the panel construction, it is described
Via hole is located at the side of the lamp hole.
3. driving device according to claim 1, which is characterized in that the driving device further includes being fixed on the collection cigarette
The first fixing seat on the inside of chamber top plate, the driving thick stick are hinged in the first fixing seat.
4. driving device according to claim 1, which is characterized in that the driving device further includes being fixed on the gear cigarette
Second fixing seat of the inside of plate, the straight push rod are hinged in the second fixing seat.
5. driving device according to claim 1, which is characterized in that add at the edge of the via hole equipped with what is extended internally
Strong edge.
6. driving device according to claim 1, which is characterized in that the via hole is waist round hole.
7. driving device according to any one of claims 1 to 6, which is characterized in that offered on the panel construction
For installing the web plate hole of filtering screen, the installing frame to extend internally, the filtering screen are equipped at the edge in the web plate hole
It is fixed on the installing frame.
8. driving device according to claim 7, which is characterized in that it is equipped with snap-gauge in the lower end of the filtering screen,
The installing frame is equipped with the card hole to match with snap-gauge.
9. driving device according to claim 7, which is characterized in that the via hole is connected with the web plate hole, and
The installing frame is equipped with the escape groove being connected to the via hole.
10. a kind of range hood including smoke collecting chamber, the panel construction being arranged on front side of the smoke collecting chamber, is arranged in panel construction
On filtering screen and the smoke barrier to be opened/closed being covered on the outside of the filtering screen, which is characterized in that further include being used for
Drive the described in any item driving devices of claim 1 to 9 of smoke barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820960220.2U CN208703980U (en) | 2018-06-21 | 2018-06-21 | Range hood's fender cigarette board drive arrangement and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820960220.2U CN208703980U (en) | 2018-06-21 | 2018-06-21 | Range hood's fender cigarette board drive arrangement and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703980U true CN208703980U (en) | 2019-04-05 |
Family
ID=65936812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820960220.2U Active CN208703980U (en) | 2018-06-21 | 2018-06-21 | Range hood's fender cigarette board drive arrangement and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208703980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094783A (en) * | 2019-06-06 | 2019-08-06 | 油克科技(武汉)有限公司 | A kind of fire prevention adjusting air valve being located in petticoat pipe |
-
2018
- 2018-06-21 CN CN201820960220.2U patent/CN208703980U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094783A (en) * | 2019-06-06 | 2019-08-06 | 油克科技(武汉)有限公司 | A kind of fire prevention adjusting air valve being located in petticoat pipe |
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