CN106642244B - A kind of smoke-backflow-proof outlet housing for range hood - Google Patents
A kind of smoke-backflow-proof outlet housing for range hood Download PDFInfo
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- CN106642244B CN106642244B CN201610873084.9A CN201610873084A CN106642244B CN 106642244 B CN106642244 B CN 106642244B CN 201610873084 A CN201610873084 A CN 201610873084A CN 106642244 B CN106642244 B CN 106642244B
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- valve block
- groove
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- smoke
- flange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a kind of smoke-backflow-proof outlet housings for range hood, cover including upper and lower opening, and two valve blocks being rotatablely connected respectively by shaft and the cover, the valve block includes valve block main body, it is characterized by: the top perimeter of the cover is formed with the first groove of annular for containing sealing fluid, the top of the cover also has the second groove radially extended, the both ends of second groove are connected to first groove respectively, and the shaft passes through the second groove and both ends are limited in respectively on all side walls of the cover；The periphery of the valve block main body is formed with the first valve block flange and the second valve block flange, and the first valve block flange is placed in first groove, and the second valve block flange is placed in second groove.
Description
Technical field
The present invention relates to a kind of outlet housing, especially a kind of smoke-backflow-proof outlet housing for range hood.
Background technique
With the improvement of living standards, range hood is widely applied in daily life, and present high-rise family
Common flue is generally used in building, the oil smoke of the range hood discharge of every household enters common flue from range hood
It is discharged above house again afterwards, if air outlet for kitchen ventilator is poorly sealed, the oil smoke that will lead to underlying User had been discharged
Enter the room of upper-layer user in journey, or when blowing hard or air pressure is low, also will appear the oil smoke of upper layer resident discharge under
The exhaust outlet of range hood of layer resident enters in house, generate mutually collaborate between air flue, smoke blowing the phenomenon that.
For this purpose, being usually provided with non-return valve block in the outlet housing of existing range hood, there are two types of common non-return valve blocks:
1, bivalve chip architecture, this structure have digging angle big (i.e. windage is small), occupying the advantages such as upper space is small for valve block；2, single
Valve structure, this structure is relatively simple, but small (windage is big) there is angle is dug, and compares the disadvantages of occupying upper space.
Currently, above two structure is all there is being not closed completely, i.e., there is the close of valve block outer ring and outlet air over body case inner ring
Envelope problem, especially bivalve chip architecture lead to still remain smoke blowing and fall cigarette there is also the sealing problem between valve block and valve block
Phenomenon；Further, since range hood has greasy residues on valve block and outlet air cover after use, and above two valve block knot
Structure, which has with outlet air cover, directly to be contacted, since the greasy dirt accumulated for a long time between valve block and outlet air cover will lead to valve block and outlet air
Cover adhesion, so that kitchen ventilator smoke evacuation is unsmooth.
Also there has been the scheme of some sealing problems for solving non-return valve blocks in the prior art, such as application No. is
A kind of sealing check valve disclosed in 98236951.4 Chinese patent, two valves including the valve body with recirculation hole and rotation connection
Piece, is arranged the sealing ring of magnetic material or ferromagnetic material at the recirculation hole seal perimeter of valve body, magnetic material or ferromagnetic material
Flexible sealing structure is set between two valve blocks.This check (non-return) valve, the sealing side of outer ring (outer edge) and outlet air cover of valve block
Formula is: using fixed magnetic material sealing ring, making its sealing in such a way that magnetic contact is attracted, but range hood is using
The oil smoke condensed in the process will form the very strong greasy dirt of viscosity, this will be such that valve block and outlet air cover bonds, the valve block of bonding without
Method is blown afloat by outlet air cover will be such that the performance of kitchen ventilator drastically decreases, and influence smoke absorption effect；In addition, two valve blocks it
Between sealing use the flexible materials such as filling sponge, crudefiber crop, it is clear that sponge, crudefiber crop and other items have good gas permeability, no
Conducive to sealing, and when the flexible sheet materials such as use leather, since the material of valve block is usually irony steel plate, between leather
Sealing connection process program is complicated, the poor reliability to work for a long time in oil pollution environment.
A kind of for another example check-valves disclosed in the Chinese patent application No. is 201410475152.7, the shell of the oil smoke check-valves
Body is combined type, can be convenient and is mounted between kitchen ventilator and smoke outlet, is saved under shell there are two symmetrical backbar interface,
It is connect with turnover panel with backbar, turnover panel movement mechanism is turnover panel and the seamless connection of backbar single-freedom and flexible hinge for not
A disassembled entirety has a continuous sealant between positioning surface on the sealing surface and shell on turnover panel edge, seals
One end face of layer bonds together with the positioning surface on shell, and the other end of sealant forms dynamic sealing with turnover panel and contacts
Coupling surface is made by turnover panel surface shape in face, dynamic sealing contact surface, and by turnover panel, accurately opening and closing movement completes dynamic sealing.
This check-valves, valve block outer ring and the sealing means of outlet air cover are: contact surface between the two uses uncured half liquid
Body shape sealant comes into full contact with outlet air cover, forms sealing effect after its solidification, valve block is contacted with sealant, on sealant
Oil film is smeared to reduce viscosity between the two in surface.The problem of this sealing means is: 1) oil film is that oxidation can occur instead
(generally cry rotten) answered, in long-term use process, reducing effect sticky between the two can be worse and worse；It 2) is solution
The certainly adhesion problems of greasy dirt, method be adjustment contact surface area, but the adhesive strength of greasy dirt be it is unknown, this is with edible oil
The characteristics of frequency (service life) that characteristic, user after type, heating are cooked, the size and type of condiment amount, vegetable, culinary art
Habit, the grease separating property of kitchen ventilator, air-out mode, the shape in air duct, external environment (temperature, humidity) of blower fan system etc.
It is closely bound up, that is to say, that as long as there is contact, to there is by the viscous risk hidden danger for extremely causing valve block that can not open；3) it first uses
Semisolid makes its cured process engineering excessively complicated again.In addition, this check-valves, the sealing between valve block uses flexible material,
And flexible material usually rigidity is poor, and be to realize sealing, the rigidity of valve block is better again, so flexible material and rigidity
Manufacturing process and Joining Technology between turnover panel is all very complicated.
Water-stop is preferably a kind of mode of sealing effect, as the applicant application No. is in 201310703970.3
A kind of Anti-backflow smoke structure of state's patent disclosure, including shell, open-close cover and motor, shell have hollow cavity, and lower end has
The Storage water tank of annular, the Storage water tank are located at said hollow cavity inner wall；Open-close cover can be set to up or down in shell simultaneously
Cooperate with Storage water tank above-mentioned to reach water-stop；Motor is set in the housing, for driving open-close cover above-mentioned to move up and down.So
And above-mentioned this Anti-backflow smoke structure, having the following disadvantages: that the surface of outlet housing is arranged in 1) whole device, occupied space is big,
Integration is poor；2) apparatus structure is complicated, at high cost, to solve the problems, such as greasy dirt adhesion valve block, uses motor-driven scheme,
Its driving device is easy to damage in oil circuit environment；3) to solve sealing problem, the patent is only with a valve block, and valve block is only
It can move up and down, even if, since its windage is larger, declining range hood performance, to reduce fume-exhausting in open state
Effect.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above-mentioned problems of the prior art, providing a kind of manufacturing process
Simply, the smoke-backflow-proof outlet housing for range hood of good seal performance.
The technical scheme of the invention to solve the technical problem is: a kind of smoke-backflow-proof outlet air for range hood
Cover, cover and two valve blocks being rotatablely connected respectively by shaft and the cover including upper and lower opening, the valve block
Including valve block main body, it is characterised in that: the top perimeter of the cover is formed with the annular first for containing sealing fluid
Groove, the top of the cover also have the second groove radially extended, and the both ends of second groove are respectively with described first
Groove connection, the shaft passes through the second groove and both ends are limited in respectively on all side walls of the cover；The valve block
The periphery of main body is formed with the first valve block flange and the second valve block flange, and the first valve block flange is placed in first groove
In, the second valve block flange is placed in second groove.
To avoid valve block and cover from directly contacting and adhesion, valve block is caused to fail to open, the first valve block flange and
Two valve block flanges by the valve block main body extend outwardly certain distance, bend and formed still further below, the valve block main body is higher than
The inner sidewall top of first groove.
To ensure to prevent between valve block and cover there are enough gaps directly to contact, set on the first valve block flange
It is equipped at least one float, the float is placed in first groove.
To influence sealing after avoiding sealing from evaporating, it is provided with and described first on the outside of the lateral wall of first groove
The liquid feeding slot of groove connection, is provided with transparent observation window on the liquid feeding slot.
To inform that user's liquid is added to enough amounts in time, and the greasy dirt of liquid surface can be removed in time, it is described to add
Liquid bath offers spillway hole far from the side of the first groove lateral wall, and the height of the spillway hole is equal to or less than in the first groove
The top of side wall.
It is described so that user when evaporateing under required amount of liquid, can be reminded for convenient for real-time monitoring liquid level
The sensor for monitoring liquid level is provided in first groove.
To remind user's adding liquid in time, the sensor is connected to control chip, connects on the control chip
There is buzzer.
For the addition for realizing liquid automatically, it is provided with water inlet line on the liquid feeding slot, is provided on the water inlet line
Solenoid valve, the sensor are connected to the control chip for controlling solenoid valve.
Preferably, the sensor is static pressure type liquid level sensor or range sensor.
Preferably, the structure of cover is that the cover includes covers body and cover flange, and the cover flange is in cover
The top of main body radially outward bends certain distance and is folded upward at and is formed, thus the side wall of covers body and cover flange
First groove is collectively formed, the side wall of the covers body constitutes the inner sidewall of the first groove, and the cover flange is upward
The part of bending constitutes the lateral wall of first groove.
To avoid valve block and shaft from relatively moving, it is provided with locating plate on the inside of the second valve block flange bending place, institute
It states and offers location hole on locating plate, the shaft is passed through from positioning hole.
Compared with the prior art, the advantages of the present invention are as follows: by between valve block and outlet air cover, between valve block and valve block
Sealing problem between valve block and valve block can be solved when solving the sealing problem of valve block and cover using water-stop simultaneously, it is close
Seal structure is simple, and can prevent valve block and cover adhesion, so that it is guaranteed that valve block can be opened normally；It is not deposited between valve block and cover
It is directly contacting, also just there is no glued dead risk between the two；The manufacturing process of valve block is simple, and process is few, passes through setting
Flange had not only been able to achieve sealing, but also was avoided that valve block and cover directly contact.
Detailed description of the invention
Fig. 1 is the schematic diagram of outlet housing of the invention；
Fig. 2 is the cover cross-sectional view of one embodiment of outlet housing of the invention；
Fig. 3 is the schematic diagram of the valve block of one embodiment of outlet housing of the invention；
Fig. 4 is the valve block half-open position cross-sectional view of one embodiment of outlet housing of the invention；
Fig. 5 is the valve block half-open position cross-sectional view (filling sealing liquid) of one embodiment of outlet housing of the invention；
Fig. 6 is the valve block closed state cross-sectional view (filling sealing liquid) of one embodiment of outlet housing of the invention；
Fig. 7 is the partial enlargement diagram of the valve block closed state cross-sectional view of Fig. 6；
Fig. 8 is the valve block closed state enlarged partial sectional view of second embodiment of outlet housing of the invention；
Fig. 9 is the valve block closed state enlarged partial sectional view of the third embodiment of outlet housing of the invention；
Figure 10 is the valve block closed state enlarged partial sectional view of the 4th embodiment of outlet housing of the invention；
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Referring to Fig. 1, a kind of smoke-backflow-proof outlet housing for range hood, including cover 1 and two valve blocks 2, cover 1 be in
The tubular of upper/lower terminal opening, the bottom of cover 1 are used to fix with the top of the fan shroud of range hood, and two valve blocks 2 are closed
At the top of cover 1.
Referring to fig. 2 and Fig. 4, cover 1 include covers body 11 and cover flange 12, and cover flange 12 is in covers body 11
Top radially outward (preferred, for level) bends certain distance and is folded upward at and is formed, thus the side wall of covers body 11
The first groove 13 of annular is collectively formed with cover flange 12.The side wall of covers body 11 constitutes the inner sidewall of the first groove 13,
The part that cover flange 12 is folded upward at constitutes the lateral wall of the first groove 13.
The top of covers body 11 is formed with the second groove 14, and the second groove 14 is located at 13 inside of the first groove, it is preferred that
Second groove 14 passes through the center on 11 top of covers body, in the radially extending of 11 top of covers body, the second groove 14
Both ends are connected to the first groove 13 respectively.On the part that cover flange 12 is folded upward at, it is corresponding with the both ends of the second groove 14
Position is opened up respectively there are two blind hole 15, is fixed with shaft 16 between two symmetrical blind holes 15, and shaft 16 is from the second groove
It is passed through in 14, so that the both ends of shaft 16 are limited in the part that is folded upward at of cover flange 12, i.e. all side walls of cover 1
On.A valve block 2 is supported by each shaft 16.
Referring to Fig. 3~Fig. 7, valve block 2 includes valve block main body 21, the first valve block flange 22 and the second valve block flange 23, valve block
21 semicircular in shape of main body, the first valve block flange 22 are formed in the camber line edge of valve block main body 21, and the second valve block flange 23 is formed in
The linear edge of valve block main body 21, the second valve block flange 23 and the first valve block flange 22 can be integrated.Second valve block flange 23
With the first valve block flange 22 by valve block main body 21 extend outwardly certain distance, bend and formed still further below, that is to say, that work as valve
When piece 2 is closed, valve block main body 21 is higher than the second valve block flange 23 and the first valve block flange 22.The edge of valve block main body 21 is located at cover
The outside on 11 top of phosphor bodies.
Shaft 16 is supported on the bending place of the second valve block flange 23, and valve block 2 16 can rotate (such as institute in Fig. 4 around the shaft as a result,
Show be lifted up opening outlet housing or it is as shown in FIG. 6 to fall close outlet housing).To avoid valve block 2 from moving with respect to shaft 16
It is dynamic, it is provided with locating plate 231 on the inside of 23 bending place of the second valve block flange, location hole 232, shaft are offered on locating plate 231
16 pass through out of location hole 232, and shaft 16 is also passed through from the first valve block flange 22 close to the both ends of the first valve block flange 23,
The position of shaft 16 and valve block 2 on vertically and horizontally is thus defined, valve block 2 can only be rotated relative to shaft 16.
Sections inner side, outside or the lower section that first valve block flange 22 is bent downward are provided at least one float 24, and first
The lesser liquid of viscosity, such as water, the first valve block flange 22 and the second valve block flange can be injected in groove 13 and the second groove 14
23 are immersed in respectively in the first groove 13 and the second groove 14.As a result, when solving the sealing problem between valve block 2 and cover 1,
Solves the sealing problem between two valve blocks 2 simultaneously.Further, since the effect of float, valve block 2 is floated up, thus valve block 2
It will not be contacted with covers body 11, between valve block main body 21 and the top of covers body 11, there is gap in the vertical direction
The bottom of h, the first valve block flange 22 will not be contacted with the bottom of the first groove 13, to avoid quilt between valve block 2 and cover 1
Greasy dirt is viscous dead, it is ensured that valve block 2 can be opened and closed normally.
Since the water in the first groove 13 and the second groove 14 is volatile, range hood can generate oil in use
Dirt, greasy dirt can be swum on the water surface, reduce the volatilization of water to a certain extent.In order to avoid the first groove 13 and the second groove
Water in 14 be evaporated completely it is a certain amount of after lose sealing function, liquid feeding slot 17, liquid feeding are provided on the lateral wall of cover flange 12
Slot 17 is connected to the first groove 13, can supplement water to the first groove 13 and the second groove 14.17 upper end opening of liquid feeding slot, lower end seal
It closes, on side wall of the liquid feeding slot 17 far from cover flange 12, offers spillway hole 171, when adding dilutional hyponatremia, water flow on certain altitude
It can be overflowed from spillway hole 171.Transparent observation window 172 is provided with below spillway hole 171, for observing liquid level position.Spillway hole
171 and observation window 172 water addition can be avoided excessive.In addition, the height of spillway hole 171 is equal to or less than covers body 11
Top, when adding water to required amount, extra water can be overflowed from spillway hole 171, since greasy dirt is swum on the water surface,
Greasy dirt can overflow first, to achieve the purpose that oil stain.
Alternatively, spillway hole 171 can also be not provided with, liquid level is observed by merely look at window 171 at this time, works as liquid level
When higher than 11 top of covers body, the greasy dirt for swimming in liquid level surface can be flowed into inside covers body 11, eventually flow to greasy dirt
In the lubricating cup of range hood, it can also achieve the purpose that oil stain.
Embodiment two
Referring to Fig. 8, in the present embodiment, the difference with above-described embodiment one is, valve block 2 is not provided with float 24, at this point,
The bottom of first valve block flange 22 is contacted with the bottom of the first groove 13, since contact site is located in liquid, can equally be kept away
Exempt from viscous dead by greasy dirt between valve block 2 and cover 1.And since valve block main body 21 is higher than the second valve block flange 23 and the first valve block flange
22, at this point, still having gap h between valve block main body 21 and the top of covers body 11.
Embodiment three
Referring to Fig. 9, in the present embodiment, the difference with above-described embodiment one is, is provided with sensing in the first groove 13
Device 131, for monitoring whether the water in the first groove 13 is reduced (volatilization), sensor 131 is connected to control chip 18, controls core
Piece 18 is also connected with buzzer 19.
Sensor 131 can be set for the height of monitoring position of fluid level in liquid for static pressure type liquid level sensor
Internal any position is arranged in lower than any position of the spillway hole 171 of liquid feeding slot 17 in the first groove 13, when under liquid level
When drop, the signal that sensor 131 will test is transferred to control chip 18.
Alternatively, sensor 131 or range sensor, for monitoring sensor and the first valve block flange 22 or float
The distance between 24, at this point, sensor 131 is arranged in the second valve block flange.When the water in the first groove 13 is reduced, the first valve
Piece flange 22 will sink, and sensor 131 detects that the distance between the first valve block flange 22 or float 23 become smaller, thus instead
It feeds and controls chip 18.
As a result, when liquid level drops below control 18 preset threshold value of chip, control chip 18 starts buzzer 19 and reports
It is alert, remind user to need suitably to add water.
Example IV
Referring to Figure 10, in the present embodiment, the difference with above-described embodiment three is, is provided with water inlet pipe on liquid feeding slot 17
Road 20 is provided with solenoid valve 201 on water inlet line 20, and control chip 18 is for controlling solenoid valve 201.
When needing to add water, control chip 18 controls solenoid valve 201 and opens, and is infused by water inlet line 20 into liquid feeding slot 17
Water, when liquid level, which rises to, to meet the requirements, sensor 131 feeds back to control chip 18, stops adding to close solenoid valve 201
Water, wherein arrow is shown into water direction.
Claims (11)
1. a kind of smoke-backflow-proof outlet housing for range hood, cover (1) including upper and lower opening and two pass through respectively
The valve block (2) of shaft (16) and the cover (1) rotation connection, the valve block (2) includes valve block main body (21), and feature exists
In:
The top perimeter of the cover (1) is formed with the first groove of annular (13) for containing sealing fluid, the cover
(1) top also has the second groove (14) radially extended, and the both ends of second groove (14) are recessed with described first respectively
Slot (13) connection, the shaft (16) is across the second groove (14) and both ends are limited in the side of the cover (1) respectively
On wall；
The periphery of the valve block main body (21) is formed with the first valve block flange (22) and the second valve block flange (23), first valve
Piece flange (22) is placed in first groove (13), and the second valve block flange (23) is placed in second groove (14).
2. being used for the smoke-backflow-proof outlet housing of range hood as described in claim 1, it is characterised in that: the first valve block flange
(22) and the second valve block flange (23) by the valve block main body (21) extend outwardly certain distance, bend and formed still further below,
The valve block main body (21) is higher than the inner sidewall top of first groove (13).
3. being used for the smoke-backflow-proof outlet housing of range hood as described in claim 1, it is characterised in that: the first valve block flange
(22) at least one float (24) is provided on, the float (24) is placed in first groove (13).
4. the smoke-backflow-proof outlet housing according to any one of claims 1 to 3 for range hood, it is characterised in that: described
The liquid feeding slot (17) being connected to first groove (13), the liquid feeding slot are provided on the outside of the lateral wall of first groove (13)
(17) transparent observation window (172) are provided on.
5. being used for the smoke-backflow-proof outlet housing of range hood as claimed in claim 4, it is characterised in that: the liquid feeding slot (17) is remote
Side from the first groove (13) lateral wall offers spillway hole (171), and the height of the spillway hole (171) is equal to or less than the
The top of one groove (13) inner sidewall.
6. being used for the smoke-backflow-proof outlet housing of range hood as claimed in claim 4, it is characterised in that: first groove (13)
Inside it is provided with the sensor for monitoring liquid level.
7. being used for the smoke-backflow-proof outlet housing of range hood as claimed in claim 6, it is characterised in that: the sensor is connected to
It controls chip (18), is connected with buzzer (19) on the control chip (18).
8. being used for the smoke-backflow-proof outlet housing of range hood as claimed in claim 6, it is characterised in that: on the liquid feeding slot (17)
It is provided with water inlet line (20), is provided with solenoid valve (201) on the water inlet line (20), the sensor is connected to for controlling
The control chip (18) of solenoid valve (201) processed.
9. being used for the smoke-backflow-proof outlet housing of range hood as claimed in claim 6, it is characterised in that: the sensor is static pressure
Formula liquid level sensor or range sensor.
10. the smoke-backflow-proof outlet housing according to any one of claims 1 to 3 for range hood, it is characterised in that: described
Cover (1) includes covers body (11) and cover flange (12), top diameter of the cover flange (12) in covers body (11)
It to outward bending certain distance and is folded upward at and is formed, thus the side wall of covers body (11) and cover flange (12) are common
First groove (13) is formed, the side wall of the covers body (11) constitutes the inner sidewall of the first groove (13), the cover
The part that flange (12) is folded upward at constitutes the lateral wall of first groove (13).
11. being used for the smoke-backflow-proof outlet housing of range hood as claimed in claim 10, it is characterised in that: second valve block is convex
It is provided with locating plate (231), is offered location hole (232) on the locating plate (231), described turn on the inside of edge (23) bending place
Axis (16) is passed through out of location hole (232).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610873084.9A CN106642244B (en) | 2016-09-30 | 2016-09-30 | A kind of smoke-backflow-proof outlet housing for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610873084.9A CN106642244B (en) | 2016-09-30 | 2016-09-30 | A kind of smoke-backflow-proof outlet housing for range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106642244A CN106642244A (en) | 2017-05-10 |
| CN106642244B true CN106642244B (en) | 2019-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610873084.9A Active CN106642244B (en) | 2016-09-30 | 2016-09-30 | A kind of smoke-backflow-proof outlet housing for range hood |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975841B (en) * | 2017-05-26 | 2023-12-15 | 宁波方太厨具有限公司 | Exhaust hood capable of preventing smoke from flowing backwards and mixing |
| CN111288521B (en) * | 2020-03-16 | 2021-10-29 | 宁波方太厨具有限公司 | Air outlet cover and range hood with same |
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| CN202955302U (en) * | 2012-11-29 | 2013-05-29 | 宁波方太厨具有限公司 | Outlet housing for range hood |
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| CN104676684A (en) * | 2013-11-27 | 2015-06-03 | 天津比诺国际贸易有限公司 | Smoke refluxing prevention watertight smoke exhaust ventilator |
| CN206055731U (en) * | 2016-09-30 | 2017-03-29 | 宁波方太厨具有限公司 | A kind of smoke-backflow-proof outlet housing for range hood |
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2016
- 2016-09-30 CN CN201610873084.9A patent/CN106642244B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2380543B (en) * | 2001-09-24 | 2005-04-27 | Peter Yeung | Range hood with grease collecting motor housing |
| CN101881476A (en) * | 2010-06-22 | 2010-11-10 | 宁波方太厨具有限公司 | Air outlet device used for range hood |
| CN202209715U (en) * | 2011-08-03 | 2012-05-02 | 宁波方太厨具有限公司 | Air outlet housing for range hood |
| CN102734852A (en) * | 2012-05-25 | 2012-10-17 | 付建中 | Liquid pressure sealed anti-backflow oil smoke exhauster |
| CN203052773U (en) * | 2012-10-30 | 2013-07-10 | 宁波方太厨具有限公司 | Air outlet housing of smoke exhaust ventilator |
| CN202955302U (en) * | 2012-11-29 | 2013-05-29 | 宁波方太厨具有限公司 | Outlet housing for range hood |
| CN104676684A (en) * | 2013-11-27 | 2015-06-03 | 天津比诺国际贸易有限公司 | Smoke refluxing prevention watertight smoke exhaust ventilator |
| CN206055731U (en) * | 2016-09-30 | 2017-03-29 | 宁波方太厨具有限公司 | A kind of smoke-backflow-proof outlet housing for range hood |
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| Publication number | Publication date |
|---|---|
| CN106642244A (en) | 2017-05-10 |
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