CN107741047A - The smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure - Google Patents
The smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure Download PDFInfo
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- CN107741047A CN107741047A CN201711229366.6A CN201711229366A CN107741047A CN 107741047 A CN107741047 A CN 107741047A CN 201711229366 A CN201711229366 A CN 201711229366A CN 107741047 A CN107741047 A CN 107741047A
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- smoke
- negative pressure
- smoke exhaust
- pipe
- exhaust ventilator
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The present invention discloses a kind of smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure, the smoke exhaust ventilator includes hood, exhaust column, smoke exhaust pipe and bend pipe, the exhaust column is connected with hood, the bend pipe is connected between exhaust column and smoke exhaust pipe, the method of the smoke discharging is that exhaust column is hyperbola, the flowing velocity of flue gas is increased from exhausting tubular construction, the method for using resistance heating again, flue gas in exhaust column is heated, to increase the flue gas negative pressure in exhaust column, the hot negative pressure of flue gas is formed in exhaust column, finally by the installation thermal air pressure fan outside bend pipe, bigger hot negative pressure is formed in smoke exhaust pipe with thermal air pressure fan, accelerate to be discharged into flue to draw deep fat cigarette in exhaust column.The smoke evacuation gas method of the present invention, flue gas be not low by the fan page of thermal air pressure fan, noise, resistance and Hot-air fan two-step heating, exhaust column, bend pipe and smoke exhaust pipe are in hot blast and flow through state, and flue gas is not easy to be attached to airduct inwall, is easy to the maintenance and cleaning of smoke exhaust ventilator.
Description
Technical field
The present invention relates to kitchen appliance technical field, more particularly to a kind of smoke discharging side of smoke exhaust ventilator low-noise heating negative pressure
Method.
Background technology
At present, smoke exhaust ventilator turns into one of kitchen products member indispensable in urban households of China kitchen.Oil pumping
Cigarette machine be it is a kind of drive away the household appliances of flue gas using miniature " the artificial wind " that is artificially formed, i.e., it is former using " air negative pressure "
Reason, electronic impeller is installed in a metal fuselage, when impeller at a high speed rotate when will around smoke exhaust ventilator air inlet shape
The air negative pressure area entered into a guiding flue gas in smoke exhaust ventilator, flue gas ceaselessly will be entered in smoke exhaust ventilator by " suction ".
For smoke exhaust ventilator in working condition, " flue gas " of suction is mainly with air, vapor, flue gas, exhaust combustion gases etc.
Composition, is the mixing air more much larger than normal air viscosity number.In volute, " flue gas " micel in smoke exhaust ventilator due to
The collision between collision and micel with impeller causes temperature to rise, and then the viscosity of mixed gas increases, and adds gas
The resistance of body flowing, a considerable amount of oil droplet attachments are had, condense in the spiral case, impeller, the surface of motor of smoke exhaust ventilator, more
Acute smoke exhaust ventilator discharges fume unfavorable turbulent flow phenomenon, it is necessary to professional person dismantles core component cleaning, otherwise disassembly, cleaning process
In often damage the performances of associated components, the effect of smoking gas substantially reduces, and these situations can give traditional smoke exhaust ventilator band
Carry out three major issues：
1. the attachment of oil droplet can increase the running resistance of induced-draft fan, the effect of smoking gas substantially reduces, if along with not special
Industry or cleaning not in time and unprofessional assembling, it can more reduce the smoke discharging effect of smoke exhaust ventilator.
2. oil droplet attachment, the resistance increase of gas flowing, can substantially increase the operation noise of air exhauster, make kitchen work people
Member is subjected to the pollution of noise in busy cook.
3. smoke exhaust ventilator vibrates excessive, easy oil leakage.Unprofessional assembling, installation are bad, have foreign matter, internal incrustation on blade
Blocked up, motor bearings abrasion or bearing hole cross big city and cause the high-amplitude of smoke exhaust ventilator to shake.
With the change of domestic environment, overall (integration) kitchen is more and more, the smoke evacuation ability to cooking-fume exhauster
It is required that more and more higher, the slogan of low flue gas, low noise or even zero flue gas is not rarely seen.Real zero flue gas is realized, no
Only range hood entrance is reduced to below cooker face, while it is most short also to allow smoke absorption distance to be reduced to.
It is investigated that card, smoking gas technology experienced first generation top suction type and second since last century, the eighties introduced China
For the change of side-suction type, but the defects of due to product technology itself, 100% suction effect of flue gas is unable to reach all the time.In addition,
Traditional top suction type smoke exhaust ventilator is all furred ceiling design mostly, and setting height(from bottom) is typically apart from the cm of kitchen range top face 70, and it has
Effect suction radius substantially in 40 cms, therefore pot face is completely disposed in outside the aspiration ranges of smoke exhaust ventilator, such flue gas from
Pot face one produces and will run wild, and can not exhaust flue gas.With the raising of technical merit, though second generation side-absorption type smoke exhaust ventilator
The distance for the smoke absorption that so furthered, but because being to wait flue gas volatilization just to start, can not avoid remaining plus unidirectional smoking
The diffusion of flue gas, so the whole exhaustions that still can not realize flue gas are inhaled in side.
The promise manufactured using German technique inspires confidence in kitchen fort, and its smoke exhaust ventilator is using " promise inspires confidence in Fumexter positive/negative-pressure Tobacco Controls
Technology ", its principle are to be depressed the flue gas to raise up using the positive wine pressure on righteous style and practice frame, allow it to be taken advantage of a situation along the bottom of a pan to negative wind
Mouth is pressed, is raised outside operator's face wind screen formed below, control flue gas, adsorbs flue gas in 38 cm ranges, it is significantly superior
16 centimetres of suction force ranges of blast are born in traditional list, can thoroughly reach the effect of suction flue gas, so as to realize the ideal of zero flue gas
State, the healthy living of real zero flue gas is brought for Chinese Consumer's, but this technology is complicated, and cost is high.
Domestic researcher also deploys tackling of key scientific and technical problems to smoke exhaust ventilator in succession, has invented the smoke exhaust ventilator of various performances.Bag
Include：
Based on the isolated smoke exhaust ventilator (Su Yanli, Han Weiguo, Dong Jianbo) that negative pressure is theoretical.It is a without dismantling and cleaning new take out
Lampblack absorber, greasy dirt is isolated with the power part of smoke exhaust ventilator, avoid core component viscous oil dirty, reduce noise, fundamentally thoroughly
Solves the cleaning problem of smoke exhaust ventilator.
Novel cooking fume exhauster (Ma Xunju) based on principle of negative pressure.Carried out newly using fluid mechanics principle and principle of negative pressure
The structure and Functional Design of type smoke exhaust ventilator, efficiently solve these problems, and do not influence the effect of smoking gas.
Using the smoke exhaust ventilator (Zhang Hui, Li Jie, Liu Xunqian) of artificial spout effect.Revolved in anterior install additional of common smoke exhaust ventilator
The shielding fluidic device turned, smoke exhaust ventilator suction flow field is set to be coupled with rotating jet flow field, to obtain artificial spout flowing
Flow field, and realize the control and suck to flue gas using the artificial spout.
Smoke chamber is without electric motor with vane wheel air amplifying type smoke exhaust ventilator (complete solution life).By increasing oil groove and oilhole, energy in body
Blocked from anti-air gap, there is wall attachment effect, the compressed air of input rushes at body air cavity upper end or even top from air gap, is formed empty
Heart shaped negative pressuren zone, the flue gas below body bottom can be aspirated strongly, forms solid gas column, so as to realize that drawing smoke amount is much larger than
Compressed air input quantity.
Gravity flow/flow-guiding type fume exhauster (Zhang Xun and).The machine is developed to adapt to the needs of Shao Mei families.Its spy
Point is the convection current using air, and waste gas can be discharged voluntarily by gas skirt through blast pipe at any time, and nothing is appointed in exhaust passage
The metal part of what choke, it also can smoothly be vented and corrode relatively gently when motor does not work, exhaust fan is not direct with flue gas in itself
Contact, the drainage drawing smoke by high velocity air caused by exhaust fan is simultaneously discharged, smoke discharging efficiency high, the flue gas in kitchen
It can be discharged in the lump with muddy air.
To prevent flue gas is directly discharged into air from polluting, flue gas will be purified before air is discharged into, at present oil pumping
The purification style of cigarette machine is broadly divided into two kinds：
Inertial separation method.The cleaning principle of this kind of mode is exactly to purify dust-laden gas containing flue gas using grating type construction, is changed
Become its airflow direction, so, oil mist particles will separate from air-flow, and this kind of mode is simple in construction, but to flue gas
Clean-up effect is but accidentally preferable, and maintenance workload is big, it is easy to blocks.
Filtration method.This kind of mode mainly contains flue gas using fiber mat, activated carbon fiber, composite filter cloth to filter dust-laden
Gas, mist of oil is purified, the gas cleaning efficiency of this mode is very high, saturation just occurs in a short time, increase is wherein
Resistance, change kitchen ventilation situation.
From the point of view of the actual conditions in China, China's cooking-fume exhauster purification techniques does not obtain substantial progress, cigarette
Gas purification efficiency is not up to standard requirement with body resistance always, and for environmental angle, the design of smoke exhaust ventilator is also present very
The defects of more, also need to be improved in a manner of all kinds of kitchen flue gas based on static technique.
Design for following environment-friendly household smoke exhaust ventilator, it is necessary to fully take into account noise, blast, air quantity, purification
The Multiple factors such as rate, this soil resistance, parameters are carried out with scientific and reasonable collocation, when being designed, it is necessary to consider kitchen
The physical property of room flue gas, the system that drawing smoke system and flue gas piece-rate system are arranged on into two is different, lifts centrifugal pan
Centrifugal force, vaporific elaioleucite is sufficiently separated with carbon black pellet thing, it is using the pumping function of smoke exhaust ventilator that flue gas is complete
Exclude.In design, it is necessary to fully meet the requirement for centrifuging the technologies such as flue gas, targetedly measure is taken to lift smoke pumping
The operating efficiency and purifying rate of machine.
The content of the invention
The technical problem to be solved in the present invention is that：For technical problem existing for prior art, the present invention provides one
The smoke evacuation gas method of kind smoke exhaust ventilator, enables to flue gas quickly through pipeline, while reduce noise caused by smoke exhaust ventilator.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure, the smoke exhaust ventilator include hood, exhaust column, smoke evacuation
Pipe and bend pipe, the exhaust column are connected with hood, and the bend pipe is connected between exhaust column and smoke exhaust pipe, the smoke discharging
Method reduces the flue gas pressures in exhaust column first to heat to the flue gas flowed through in exhaust column；Again to being risen in bend pipe
Flue gas after temperature carries out pressing wind-heat Negative pressure.
Further improvement as above-mentioned technical proposal：
It is described flue gas heat to heat exhaust column.
The air inlet of the exhaust column and the opening size of air outlet are more than the diameter in exhaust column stage casing.
The exhaust column is hyperbolic-type pipe, and the side section of its tube wall is hyperbola.
The tube wall of the exhaust column is externally provided with heater.
The heater is resistance heating cylinder.
The bend pipe is provided with thermal air pressure fan, and the thermal air pressure fan in bend pipe to carrying out pressing wind-heat Negative pressure.
The discharge pipe of the thermal air pressure fan is located in bend pipe, the air outlet of the discharge pipe against the outlet of smoke exhaust pipe,
The outlet of smoke exhaust pipe is located in the intrinsic smokejack of building.
The discharge pipe is taper, and cone mouth is against the outlet of smoke exhaust pipe.
The main frame of the thermal air pressure fan is installed on outside window.
Compared with prior art, the advantage of the invention is that：
(1) the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure of the invention, carried out to flowing through the flue gas in exhaust column
Heat, improve the temperature of exhausting inner tube smoke, reduce exhausting overpressure, make the pressure differential in exhaust column and at hood mouth
Increase, the speed that flue gas passes through is improved with this.
(2) the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure of the invention, with thermal air pressure fan in smoke exhaust pipe shape
Cheng Geng great hot negative pressure, the flue gas after heating up in bend pipe is carried out to be depressured speed-raising processing.
(3) the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure of the invention, exhausting tube wall are molded into hyperbola,
By the change of exhausting pipe diameter and basal area, the movement velocity of exhausting inner tube smoke is increased from exhausting tubular construction.
(4) the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure of the invention, is heated to exhaust column, and exhausting
Pipe, bend pipe and smoke exhaust pipe are in hot blast and flow through state, and flue gas is not easy to be attached to exhausting inside pipe wall, is easy to the maintenance of smoke exhaust ventilator
With cleaning.
(5) the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure of the invention, flue gas do not pass through the fan of thermal air pressure fan
Page, because flue gas carries out parcel to flabellum the noise of hot extraction fan will not be made to become big with the lengthening of usage time.
(6) the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure of the invention, flue gas do not pass through the fan of thermal air pressure fan
Page, the main frame of thermal air pressure fan can also be arranged on outside near the window, thoroughly the sound of extraction fan are isolated from outside kitchen.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Figure number explanation：
1-hood；2-exhaust column；3-smoke exhaust pipe；4-heater；5-bend pipe；51-thermal air pressure fan；511—
Discharge pipe；6-smokejack.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Fig. 1 shows a kind of embodiment of smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure of the present invention, smoke exhaust ventilator
Including hood 1, exhaust column 2, smoke exhaust pipe 3 and bend pipe 5, exhaust column 2 is connected with hood 1, and bend pipe 5 is connected to exhaust column 2 and smoke evacuation
Between pipe 3.The method of smoke discharging reduces the cigarette in exhaust column 2 first to heat to flowing through the flue gas in exhaust column 2
Atmospheric pressure；Again the flue gas after heating up in bend pipe 5 is carried out pressing wind-heat Negative pressure.
In the present embodiment, flue gas heat to heat exhaust column 2.The tube wall of exhaust column 2 is externally provided with
Heater 4, heater 4 are resistance heating cylinder, and resistance heating cylinder is located at outside the tube wall of exhaust column 2, and heating exhaust column 2 is with big
The gas pressure that width is reduced in pipeline forms the hot negative pressure of non-confined space, increases the suction ability to flue gas in hood.Tube wall
The resistance heating cylinder of periphery can select different heating-up temperatures according to the requirement of smoke evacuation tolerance.In the higher exhaust column 2 of temperature
Air pressure is smaller, and the negative pressure of formation is bigger, and the ability of suction flue gas is stronger.
In the present embodiment, the air inlet of exhaust column 2 and the opening size of air outlet are more than the diameter in the stage casing of exhaust column 2.Take out
Airduct 2 is hyperbolic-type pipe, copies thermal power plant's hyperbola shell cooling tower, and hyperbola is molded into the tube wall of exhaust column 2, is led to
The change of the diameter of exhaust column 2 and basal area is crossed, to increase the movement velocity of flue gas in pipeline.
In the present embodiment, exhaust column 2 is heated by resistance heating cylinder, the temperature of flue gas is improved, cigarette is improved with this
The speed that gas passes through pipeline.When some region of gas temperature raises because of certain factor, the swollen of gas volume will be caused
Swollen, air molecule peripherally will certainly will spread in area.Temperature is high, and gas molecule no doubt can move quicker, because pressure
The reason for increase.The dynamic structure of smoke exhaust ventilator is designed in body side simultaneously, greasy dirt is isolated with these structures, plays and subtract
The effect of few fan noise, and it is easy to assembly or disassembly.This, which is designed, is based on negative pressure Theoretical Design, static pressure+dynamic pressure in air
It is worth constant, when smoke exhaust ventilator outlet because air velocity is big, dynamic pressure increase, static pressure is reduced by, and the static air pressure value of outside is big,
Namely pressure is big, has naturally just been pressed into the air at panel of cooker hood.Larger pressure is produced in smoke exhaust ventilator hood 1
The negative pressuren zone of difference, under the compression of continuous air-flow, the suction more smoothly increased can be produced, ensured in the area of smoke exhaust ventilator hood 1
Larger pressure difference is produced with peripheral region, motor rotation system is isolated with greasy dirt, changes rotation system with performing the work of structure
Make mode, making smoke exhaust ventilator, core component does not contact directly with flue gas at work, would not also produce motor oil dripping and viscous oil
Dirty phenomenon, a series of insoluble problems for solving smoke exhaust ventilator core all the time, especially thousand wing formula worm gears
Cleaning, the shortcomings that overcoming prior art to exist, design is a kind of simple in construction easy to use to be advantageous to keep clean smoke pumping
Machine.
In the present embodiment, bend pipe 5 is provided with thermal air pressure fan 51, and thermal air pressure fan 51 in bend pipe 5 to carrying out pressing wind-heat negative pressure
Processing, forms bigger hot negative pressure in whole pipeline, accelerates to be discharged into flue to draw heat smoke in exhaust column 2.Thermal air pressure wind
The discharge pipe 511 of fan 51 is located in bend pipe 5, and the air outlet of discharge pipe 511 is against the outlet of smoke exhaust pipe 3, the outlet position of smoke exhaust pipe 3
In in the intrinsic smokejack 6 of building.Flue gas by the fan page of thermal air pressure fan 51, will not make because flue gas carries out parcel to flabellum
The noise of thermal air pressure fan becomes big with the lengthening of usage time.
In the present embodiment, discharge pipe 511 presses venturi (Venturi) effect, and discharge pipe 511 is made into tapered, cone mouth
Against the outlet of smoke exhaust pipe 3, for restricted flow when by the flow section of diminution, there is flow velocity or flow increase in fluid, and it flows
Amount is inversely proportional with flow section, and knows the increase of flow velocity with the reduction of Fluid pressure, swiftly flowing stream by bernoulli law
Body nearby can produce low pressure, so as to produce suction-operated.
In the present embodiment, the main frame of thermal air pressure fan 51 is installed on outside window, thoroughly isolates the sound of thermal air pressure fan 51
Outside kitchen.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any formal limitation to the present invention.It is although of the invention
It is disclosed above with preferred embodiment, but it is not limited to the present invention.Therefore, it is every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modifications, equivalents, and modifications made for any of the above embodiments, it all should fall
In the range of technical solution of the present invention protection.
Claims (10)
1. a kind of smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure, the smoke exhaust ventilator include hood (1), exhaust column (2),
Smoke exhaust pipe (3) and bend pipe (5), the exhaust column (2) are connected with hood (1), and the bend pipe (5) is connected to exhaust column (2) and row
Between smoke pipe (3), it is characterised in that the method for the smoke discharging is first to be heated to flowing through the flue gas in exhaust column (2)
Processing, increase the flue gas negative pressure in exhaust column (2)；Again the flue gas after heating up in bend pipe (5) is carried out pressing wind-heat Negative pressure.
2. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 1, it is characterised in that described to cigarette
Gas heat to heat exhaust column (2).
3. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 2, it is characterised in that the exhausting
The opening size of the air inlet and air outlet of managing (2) is more than the diameter in exhaust column (2) stage casing.
4. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 3, it is characterised in that the exhausting
It is hyperbolic-type pipe to manage (2), and the side section of its tube wall is hyperbola.
5. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 2, it is characterised in that the exhausting
The tube wall of pipe (2) is externally provided with heater (4).
6. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 5, it is characterised in that the heating
Device (4) is resistance heating cylinder.
7. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 1, it is characterised in that the bend pipe
(5) thermal air pressure fan (51) is provided with, the thermal air pressure fan (51) in bend pipe (5) to carrying out pressing wind-heat Negative pressure.
8. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 7, it is characterised in that the hot blast
The discharge pipe (511) of pressure fan (51) is located in bend pipe (5), air outlet the going out against smoke exhaust pipe (3) of the discharge pipe (511)
Mouthful, the outlet of smoke exhaust pipe (3) is located in the intrinsic smokejack of building (6).
9. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 8, it is characterised in that the air-out
Pipe (511) is taper, outlet of the cone mouth against smoke exhaust pipe (3).
10. the smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure according to claim 7, it is characterised in that the heat
The main frame of blast fan (51) is installed on outside kitchen window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711229366.6A CN107741047A (en) | 2017-11-29 | 2017-11-29 | The smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711229366.6A CN107741047A (en) | 2017-11-29 | 2017-11-29 | The smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure |
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| Publication Number | Publication Date |
|---|---|
| CN107741047A true CN107741047A (en) | 2018-02-27 |
Family
ID=61238738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711229366.6A Pending CN107741047A (en) | 2017-11-29 | 2017-11-29 | The smoke evacuation gas method of smoke exhaust ventilator low-noise heating negative pressure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3767184A1 (en) * | 2019-07-18 | 2021-01-20 | Intell Properties B.V. | Cooktop with downdraft extraction |
| CN112484110A (en) * | 2020-11-10 | 2021-03-12 | 华帝股份有限公司 | Smoke discharge control method and control system for public flue |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195054Y (en) * | 1994-06-11 | 1995-04-19 | 中南工学院 | Jet-suction cooking fume exhauster |
| CN2386352Y (en) * | 1999-06-09 | 2000-07-05 | 唐长华 | Injection cooker hood |
| CN2396307Y (en) * | 1999-11-04 | 2000-09-13 | 栾汝贵 | Jet type fume exhauster |
| CN102042630A (en) * | 2011-01-20 | 2011-05-04 | 毛学东 | Venturi tube injection range hood |
| DE102011102281A1 (en) * | 2010-05-25 | 2012-03-15 | Unox S.P.A. | Cooking oven for preparing food products, has static device comprising region with narrowed cross-section, where flow rate of gases is related with flow rate of air with pressure, temperature and vapor concentration in cooking chamber |
| CN202973264U (en) * | 2012-11-11 | 2013-06-05 | 尾扎郎加泽郎 | Range hood adopting inlet air for online deoiling |
-
2017
- 2017-11-29 CN CN201711229366.6A patent/CN107741047A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195054Y (en) * | 1994-06-11 | 1995-04-19 | 中南工学院 | Jet-suction cooking fume exhauster |
| CN2386352Y (en) * | 1999-06-09 | 2000-07-05 | 唐长华 | Injection cooker hood |
| CN2396307Y (en) * | 1999-11-04 | 2000-09-13 | 栾汝贵 | Jet type fume exhauster |
| DE102011102281A1 (en) * | 2010-05-25 | 2012-03-15 | Unox S.P.A. | Cooking oven for preparing food products, has static device comprising region with narrowed cross-section, where flow rate of gases is related with flow rate of air with pressure, temperature and vapor concentration in cooking chamber |
| CN102042630A (en) * | 2011-01-20 | 2011-05-04 | 毛学东 | Venturi tube injection range hood |
| CN202973264U (en) * | 2012-11-11 | 2013-06-05 | 尾扎郎加泽郎 | Range hood adopting inlet air for online deoiling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3767184A1 (en) * | 2019-07-18 | 2021-01-20 | Intell Properties B.V. | Cooktop with downdraft extraction |
| WO2021009173A1 (en) * | 2019-07-18 | 2021-01-21 | Intell Properties B.V. | Cooktop with downdraft extraction |
| CN112484110A (en) * | 2020-11-10 | 2021-03-12 | 华帝股份有限公司 | Smoke discharge control method and control system for public flue |
| CN112484110B (en) * | 2020-11-10 | 2022-12-02 | 华帝股份有限公司 | Smoke discharge control method and control system for public flue |
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Application publication date: 20180227 |