CN106594828A - Ceiling type extractor hood - Google Patents
Ceiling type extractor hood Download PDFInfo
- Publication number
- CN106594828A CN106594828A CN201611128112.0A CN201611128112A CN106594828A CN 106594828 A CN106594828 A CN 106594828A CN 201611128112 A CN201611128112 A CN 201611128112A CN 106594828 A CN106594828 A CN 106594828A
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- CN
- China
- Prior art keywords
- smoke deflector
- spout
- air
- guiding device
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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)
- Ventilation (AREA)
Abstract
The invention discloses a ceiling type extractor hood which comprises an exhaust fume collecting hood and a smoke deflector, wherein an air inlet is formed in the exhaust fume collecting hood; the smoke deflector is arranged below the air inlet; air inlet channels are formed at least on left side and right side between the smoke deflector and the exhaust fume collecting hood; the ceiling type extractor hood is at least provided with flow guiding devices on left side and right side; spouts are formed in the flow guiding devices and are formed below the exhaust fume collecting hood; and the smoke deflector and the spouts of the flow guiding devices are arranged to enable airflow ejected out of the spouts to be separated into two parts by the smoke deflector, one part of the airflow directly enters the air inlet from above the smoke deflector through the adjacent air inlet channels, and the other part of the airflow flows to other air inlet channels from below the smoke deflector and then enters the air inlet. The flow guiding devices are arranged, the airflow ejected out of the flow guiding devices drives lampblack to be intersected with the smoke deflector, and the smoke deflector reallocates the lampblack, so that the lampblack is enabled to enter the interior of the extractor hood from different channels with a more reasonable flow rate, lampblack escape is avoided, and the effect of lampblack suction is improved.
Description
Technical field
The present invention relates to a kind of cooking apparatus, especially a kind of range hood.
Background technology
At present existing top-sucking kitchen ventilator (be arranged on directly over kitchen range, thin type, deep type or tower range hood,
Do not include that side is inhaled and lower-discharging type) mostly version be:Top arranges exhaust fume collecting hood and forms concave cavity (smoke collecting chamber), on exhaust fume collecting hood
It is provided with air inlet and drainage screen.The oil smoke produced in cooking process is collected in smoke collecting chamber, and by connecting with smoke collecting chamber
Discharge outdoor in logical air channel.
A kind of top-sucking kitchen ventilator as disclosed in the Chinese patent application of Application No. 201410315985.7, including collection
Petticoat pipe and the air inlet of exhaust fume collecting hood bottom surface is arranged on, oil collection plate is fixed on the underface of air inlet, constitutes with air inlet bottom surface
The passage of four side air intakes, kuppe are located at the lower surface of oil collection plate, and due to being four side air intakes, smoking efficiency is higher, and water conservancy diversion
Cover can carry out the water conservancy diversion of four direction to oil smoke, at utmost strengthen the fume-exhausting ability of lampblack absorber.
Above-mentioned this range hood, the oil smoke produced by cooking stove below, will by kuppe during ascension
Oil smoke is imported in air inlet, although this range hood can pass through the setting of oil collection plate and kuppe so as to by oil smoke as far as possible
Suction, but if the oil smoke amount for producing is larger or when having external air flow to disturb, oil smoke is easy to from exhaust fume collecting hood both sides
Position is escaped, and thus can not only reduce the smoking efficiency of range hood, and if producing the phenomenon of fumes escaping, easily to kitchen
The environment in room is impacted, and can also affect the health of user.
At present the conventional mode for constituting air curtain is preventing fumes escaping, the such as China of Application No. 201610083264.7 specially
A kind of lampblack absorber disclosed in sharp, including lampblack absorber body, with smoke inlet, and the first air curtain portion, it is arranged on lampblack absorber body
On, the first air curtain portion has the first air outlet, and the air-flow flowed out from the first air outlet forms air curtain to prevent oil smoke to extending out
Dissipate.
This lampblack absorber, although can prevent fumes escaping to a certain extent, but the presence of air curtain but to a certain degree
On reduce the rate of climb of oil smoke, reduce smoke absorption effect.
The content of the invention
The technical problem to be solved is the problem existed for above-mentioned prior art, there is provided a kind of to improve oil suction
The top-sucking kitchen ventilator of cigarette effect.
The present invention solve the technical scheme that adopted of above-mentioned technical problem for:A kind of top-sucking kitchen ventilator, including collection cigarette
Cover and smoke deflector, offer air inlet on the exhaust fume collecting hood, the smoke deflector is arranged on the lower section of the air inlet, described to lead cigarette
At least air intake passage is formed with the left and right sides between plate and exhaust fume collecting hood, the range hood is at least provided with the left and right sides leads
Stream device, offers spout on the guiding device, the spout is located at below exhaust fume collecting hood, it is characterised in that:The smoke deflector
It is divided into two parts, a part of air-flow to lead to by smoke deflector into the air-flow for causing to eject from spout with the notch setting of guiding device
Cross adjacent air intake passage and air inlet is directly entered from above smoke deflector, another part air-flow is from smoke deflector flowing underneath to other
Air intake passage after enter air inlet.
Preferably to hinder oil smoke in the escape of both sides, the spout towards smoke deflector and diagonally downward, the spout
Angle with vertical direction is θ, and 40 °≤θ≤90 °, the bottom of the guiding device has guide face, and the guide face is from spout
Place extends obliquely downward certain distance towards smoke deflector, be re-directed towards smoke deflector tilts upward extension certain distance, so that institute
The air-flow for stating spout ejection forms the flow field for tilting upward.
In order that the air flow rate for being mixed with cleaned air and oil smoke that passes through of the air intake passage from each side with accordingly enter
The incoming air area of wind passage is directly proportional, it is ensured that air intake to greatest extent, and edge minimum point and the corresponding water conservancy diversion of the smoke deflector are filled
Difference in height between the spout put is that the horizontal range between the spout of h, the edge of the smoke deflector and corresponding guiding device is
L, -50mm≤h≤80mm, 100mm≤L≤400mm.
To avoid in the limiting case, when the air-flow that spout sprays not by blower fan suction force under the influence of and whole is flowed to and is led
Below cigarette plate, the guide face is arc surface, and the guide face intersected with the normal of smoke deflector away from the tangent line of the end of spout
In the top of smoke deflector;Or the normal parallel of tangent line of the guide face away from the end of spout and smoke deflector.
Preferably, the guiding device also includes the pressure stabilizing cavity of source of the gas passage and source of the gas channel connection, the spout with it is steady
The connection of pressure chamber.
In order to ensure the uniformity of the air-flow velocity that spout sprays, the spout is uniform along the length direction of guiding device
Ground arranged for interval.
In order to preferably guarantee that spout ejects the uniformity of air-flow and is conducive to the flowing of pressure stabilizing cavity internal gas flow,
The flow that the volume of the pressure stabilizing cavity passes through in 0.1s not less than the gas entered from source of the gas passage.
Compared with prior art, it is an advantage of the current invention that:By arranging guiding device, the air-flow that guiding device is ejected
Drive oil smoke when intersecting with smoke deflector, smoke deflector is distributed to oil smoke again so that oil smoke is with more rational flow
Enter inside range hood from different passages, it is to avoid the escape of oil smoke, improve smoke absorption effect;On the other hand, due to
Spout arranged for interval, therefore, the contact area of high velocity air and peripheral gas flow is increased, peripheral gas flow has greatly been driven
Flowing, define the flow field of big flow, the flow field tilts upward, and further hinders the escape of oil smoke.
Description of the drawings
Fig. 1 is the structural representation of the range hood of the present invention;
Fig. 2 is the schematic diagram that the range hood of the present invention hides top board;
Fig. 3 is the structural representation of the guiding device of the range hood of the present invention;
Fig. 4 is the sectional view of the guiding device of the range hood of the present invention;
Fig. 5 is the sectional view of the range hood of the present invention;
Fig. 6 is the rearview (hiding front side guiding device) of the range hood of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Referring to Fig. 1, Fig. 2 and Fig. 5, a kind of top-sucking kitchen ventilator, including exhaust fume collecting hood 1, the wind being arranged on above exhaust fume collecting hood 1
Hood 2, offers air inlet 11, for arranging blower fan in fan shroud 2, so as to oil smoke can be entered by air inlet 11 on exhaust fume collecting hood 1
Enter in fan shroud 2, be then exhausted from common flue.Smoke deflector 3 is provided with below the air inlet 11 of exhaust fume collecting hood 1, in the present embodiment
In, smoke deflector 3 is horizontally disposed flat board, alternatively, smoke deflector 3 can also using any structure in prior art, such as four
Arch of upper spill or fovea superior of all flange downwards etc..Due to being provided with smoke deflector 3 below the air inlet 11 of exhaust fume collecting hood 1, because
This, is formed with the left and right sides, the air intake passage 12 of front side three between smoke deflector 3 and exhaust fume collecting hood 1.Above exhaust fume collecting hood 1, fan shroud 2
Periphery is provided with from outside to inside gradually acclivitous top board 4, forms cavity between exhaust fume collecting hood 1 and top board 4.
Outwards escape when near exhaust fume collecting hood 1 as the race cigarette phenomenon of top-sucking kitchen ventilator is substantially oil smoke
Ease, therefore, the present invention by formed one with the flow field in opposite direction of escaping, the direction of motion of change escape oil smoke is preventing oil
Cigarette is escaped.For this purpose, the left and right sides of range hood is provided with guiding device 5, alternatively, it is also possible on a left side for range hood
Right both sides and front side arrange guiding device 5.
Guiding device 5 includes source of the gas passage 51, the pressure stabilizing cavity 52 connected with source of the gas passage 51, the spray connected with pressure stabilizing cavity 52
The guide face 54 of the air-flow for ejecting mouthfuls 53, and for pilot jet 53.The source of the gas passage 51 of each guiding device 5 can be arranged
Above exhaust fume collecting hood 1, i.e., in the cavity between exhaust fume collecting hood 1 and top board 4.Preferably, between the source of the gas passage 51 of each guiding device 5
Can be interconnected by conduit 61, so as to share a small-sized fan 62, realize air intake;Or can also be that each water conservancy diversion is filled
Small-sized fan 62 is provided with the source of the gas passage 51 for putting 5, air intake is realized.Small-sized fan 62 can be arranged on exhaust fume collecting hood 1 and top
In cavity between plate 4, by the gap between exhaust fume collecting hood 1 and top board 4, the air outside range hood is aspirated, or also may be used
So that the fraction of air outlet for kitchen ventilator is incorporated into small-sized fan 62 through filtration.
Referring to Fig. 3 and Fig. 4, guiding device 5 also includes roof 551, side wall 552 and diapire 553, roof 551, side wall 552
Above-mentioned pressure stabilizing cavity 52 is constituted with diapire 553.Pressure stabilizing cavity 52 is used for the stable stream pressure entered from source of the gas passage 51, so as to
Ensure the uniformity of the air-flow velocity from the ejection of spout 53.In order to preferably guarantee spout 53 eject air-flow uniformity, with
And be conducive to the flowing of 52 internal gas flow of pressure stabilizing cavity, the volume of pressure stabilizing cavity 52 exist not less than the gas entered from source of the gas passage 51
The flow that 0.1s passes through.
Guiding device 5 forms above-mentioned spout 53 away between the side wall 552 and diapire 553 of 3 side of smoke deflector, in this enforcement
In example, guiding device 5 is elongated, length direction arranged for interval of the spout 53 along guiding device 5, the front and back in such as Fig. 5
To.Towards smoke deflector 3 and diagonally downward, the angle of spout 53 and vertical direction is θ to spout 53,40 °≤θ≤90 °.Diapire
553 and the lateral surface near the side wall 552 of 3 side of smoke deflector constitute above-mentioned guide face 54, guide face 54 is from court at spout 53
Certain distance is extended obliquely downward to smoke deflector 3, smoke deflector 3 is hereafter re-directed towards and is tilted upward extension certain distance, so as to draw
The air-flow for ejecting is led from spout 53.In the present embodiment, it is in recessed arcwall face, alternatively, water conservancy diversion that guide face 54 is overall
Face 54 can also be the combination of plane and curved surface, as long as seamlessly transitting between plane and curved surface.
Referring to Fig. 5, thus, the air-flow (being represented with arrow A) for being sprayed from spout 53 at a high speed is as Coanda effect is along leading
Stream interface 54 is moved, and the direction of motion of its script is changed, from becoming inclined diagonally downward upwards.Now, air-flow is divided into two
Point, most of air-flow leaves guide face 54 from adjacent air intake passage 12 by then from above smoke deflector 3 into exhaust fume collecting hood 1
Air inlet 11, (oil smoke air-flow represented with arrow C, this part jet-stream wind, extraneous air at the same time to have brought substantial amounts of oil smoke into
With the mixed airflow of oil smoke with shown in arrow D1);And remainder air-flow then drives lower section (this portion of oil smoke flow to smoke deflector 3
Divide the mixed airflow of jet-stream wind, extraneous air and oil smoke with shown in arrow D2), finally pass through which from the opposite side of smoke deflector 3
His air intake passage 12 is inhaled into inside range hood.When being provided with guiding device 5 on front side of the range hood, part is flowed
Oil smoke to below smoke deflector 3 is then sucked from 3 left and right sides of smoke deflector.That is, the air-flow that guiding device 5 is ejected drives
Oil smoke is distributed to oil smoke again when being intersected with smoke deflector 3 so that oil smoke is led to from different with more rational flow
Road is entered inside range hood.On the other hand, due to 53 arranged for interval of spout, therefore, increase high velocity air and peripheral gas flow
Contact area, greatly driven the flowing of peripheral gas flow (with shown in arrow B), defined the flow field of big flow, should
Flow field tilts upward, and further hinders the escape of oil smoke.
Referring to Fig. 6, in order that the air-flow stream for being mixed with cleaned air and oil smoke passed through from the air intake passage 12 of each side
Amount is directly proportional to the incoming air area of corresponding air intake passage 12, it is ensured that air intake to greatest extent, -50mm≤h≤80mm, 100mm≤L
≤ 400mm, wherein, h refers to the difference in height between the spout 53 of the edge minimum point and corresponding guiding device 5 of smoke deflector 3, and L is
Refer to the horizontal range between the edge and the spout 53 of corresponding guiding device 5 of smoke deflector 3.H is less, then the air-flow that spout 53 sprays
The ratio flowed to above smoke deflector 3 is bigger, and L is bigger, then the ratio above air flow direction smoke deflector 3 that spout 53 sprays is bigger.
Guide face 54 intersects at the top of smoke deflector 3 away from the tangent line L1 of the end of spout 53 and the normal L2 of smoke deflector 3,
Or tangent line L1 is parallel with the normal L2 of smoke deflector 3, with avoid in the limiting case, when spout 53 spray air-flow not by the wind
All flow to below smoke deflector 3 under the influence of blower fan suction force in hood 2.
Claims (7)
1. a kind of top-sucking kitchen ventilator, including exhaust fume collecting hood (1) and smoke deflector (3), offer air inlet on the exhaust fume collecting hood (1)
(11), the smoke deflector (3) is arranged on the lower section of the air inlet (11), between the smoke deflector (3) and exhaust fume collecting hood (1) at least
Air intake passage (12) is formed with the left and right sides, the range hood is at least provided with guiding device (5) in the left and right sides, described
Spout (53) is offered on guiding device (5), the spout (53) is below exhaust fume collecting hood (1), it is characterised in that:It is described to lead cigarette
The spout (53) of plate (3) and guiding device (5) is arranged so that from spout (53) air-flow for ejecting is divided into by smoke deflector (3)
Two parts, a part of air-flow are directly entered air inlet (11) from above smoke deflector (3) by adjacent air intake passage (12), another
Fraction afterwards enters air inlet (11) to other air intake passages (12) from smoke deflector (3) flowing underneath.
2. top-sucking kitchen ventilator as claimed in claim 1, it is characterised in that:The spout (53) towards smoke deflector (3) and
And diagonally downward, the angle of the spout (53) and vertical direction is θ, 40 °≤θ≤90 °, the bottom of the guiding device (5)
With guide face (54), the guide face (54) extends obliquely downward certain distance, again towards smoke deflector (3) from from spout (53)
Extension certain distance is tilted upward towards smoke deflector (3), so that the air-flow that the spout (53) sprays is formed and tilted upward
Flow field.
3. top-sucking kitchen ventilator as claimed in claim 2, it is characterised in that:The edge minimum point of the smoke deflector (3) with
Difference in height between the spout (53) of corresponding guiding device (5) is h, edge and corresponding guiding device (5) of the smoke deflector (3)
Spout (53) between horizontal range be L, -50mm≤h≤80mm, 100mm≤L≤400mm.
4. top-sucking kitchen ventilator as claimed in claim 2 or claim 3, it is characterised in that:The guide face (54) is arc surface, institute
State guide face (54) smoke deflector (3) is intersected at away from the tangent line (L1) of the end of spout (53) and the normal (L2) of smoke deflector (3)
Top;Or the guide face (54) is put down with the normal (L2) of smoke deflector (3) away from the tangent line (L1) of the end of spout (53)
OK.
5. top-sucking kitchen ventilator as claimed in claim 2 or claim 3, it is characterised in that:The guiding device (5) also includes source of the gas
Passage (51), the pressure stabilizing cavity (52) connected with source of the gas passage (51), the spout (53) are connected with pressure stabilizing cavity (52).
6. top-sucking kitchen ventilator as claimed in claim 5, it is characterised in that:The spout (53) is along guiding device (5)
Length direction be evenly spaced arrangement.
7. top-sucking kitchen ventilator as claimed in claim 5, it is characterised in that:The volume of the pressure stabilizing cavity (52) not less than from
The flow that the gas that source of the gas passage (51) is entered passes through in 0.1s.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201611128112.0A CN106594828B (en) | 2016-12-09 | 2016-12-09 | A kind of top-sucking kitchen ventilator |
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CN201611128112.0A CN106594828B (en) | 2016-12-09 | 2016-12-09 | A kind of top-sucking kitchen ventilator |
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CN106594828A true CN106594828A (en) | 2017-04-26 |
CN106594828B CN106594828B (en) | 2019-11-12 |
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CN201611128112.0A Active CN106594828B (en) | 2016-12-09 | 2016-12-09 | A kind of top-sucking kitchen ventilator |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107975843A (en) * | 2017-05-27 | 2018-05-01 | 宁波方太厨具有限公司 | A kind of range hood |
CN108006756A (en) * | 2017-06-29 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of range hood |
CN109253484A (en) * | 2018-11-13 | 2019-01-22 | 林德祥 | Smoke evacuation system |
CN109539353A (en) * | 2018-12-27 | 2019-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Exhaust fume collecting hood and range hood |
CN109595639A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of near-suction type oil smoke suction machine |
CN111121122A (en) * | 2018-10-31 | 2020-05-08 | 宁波方太厨具有限公司 | Air blowing and sucking device and range hood with same |
CN113154481A (en) * | 2020-01-06 | 2021-07-23 | 宁波方太厨具有限公司 | Cooking system |
TWI755025B (en) * | 2020-08-14 | 2022-02-11 | 藍天廚飾股份有限公司 | Double-layered diversion structure of kitchen hood and kitchen hood having the same |
CN116965572A (en) * | 2023-09-22 | 2023-10-31 | 四川中豪食品有限公司 | Material machine is fried to hot pot seasoning |
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CN1712832A (en) * | 2004-06-16 | 2005-12-28 | 富士工业株式会社 | Exhaust hood |
EP1757865A2 (en) * | 2005-08-23 | 2007-02-28 | LG Electronics Inc. | Exhaust hood |
CN102345891A (en) * | 2011-06-01 | 2012-02-08 | 兰州理工大学 | Self-sucking efficient smoke exhaust ventilator |
US20140034039A1 (en) * | 2012-08-03 | 2014-02-06 | Yiwei Qi | Air exchange system with multiple air blowers or fans to produce a cyclone-like air flow |
CN206291269U (en) * | 2016-12-09 | 2017-06-30 | 宁波方太厨具有限公司 | A kind of top-sucking kitchen ventilator |
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Patent Citations (5)
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CN1712832A (en) * | 2004-06-16 | 2005-12-28 | 富士工业株式会社 | Exhaust hood |
EP1757865A2 (en) * | 2005-08-23 | 2007-02-28 | LG Electronics Inc. | Exhaust hood |
CN102345891A (en) * | 2011-06-01 | 2012-02-08 | 兰州理工大学 | Self-sucking efficient smoke exhaust ventilator |
US20140034039A1 (en) * | 2012-08-03 | 2014-02-06 | Yiwei Qi | Air exchange system with multiple air blowers or fans to produce a cyclone-like air flow |
CN206291269U (en) * | 2016-12-09 | 2017-06-30 | 宁波方太厨具有限公司 | A kind of top-sucking kitchen ventilator |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107975843A (en) * | 2017-05-27 | 2018-05-01 | 宁波方太厨具有限公司 | A kind of range hood |
CN107975843B (en) * | 2017-05-27 | 2024-02-20 | 宁波方太厨具有限公司 | Fume exhauster |
CN108006756A (en) * | 2017-06-29 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of range hood |
CN108006756B (en) * | 2017-06-29 | 2024-02-20 | 宁波方太厨具有限公司 | Fume exhauster |
CN109595639B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Near-suction type range hood |
CN109595639A (en) * | 2017-09-30 | 2019-04-09 | 宁波方太厨具有限公司 | A kind of near-suction type oil smoke suction machine |
CN111121122A (en) * | 2018-10-31 | 2020-05-08 | 宁波方太厨具有限公司 | Air blowing and sucking device and range hood with same |
CN111121122B (en) * | 2018-10-31 | 2021-11-26 | 宁波方太厨具有限公司 | Air blowing and sucking device and range hood with same |
CN109253484A (en) * | 2018-11-13 | 2019-01-22 | 林德祥 | Smoke evacuation system |
CN109539353A (en) * | 2018-12-27 | 2019-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Exhaust fume collecting hood and range hood |
CN113154481A (en) * | 2020-01-06 | 2021-07-23 | 宁波方太厨具有限公司 | Cooking system |
TWI755025B (en) * | 2020-08-14 | 2022-02-11 | 藍天廚飾股份有限公司 | Double-layered diversion structure of kitchen hood and kitchen hood having the same |
CN116965572B (en) * | 2023-09-22 | 2023-12-01 | 四川中豪食品有限公司 | Material machine is fried to hot pot seasoning |
CN116965572A (en) * | 2023-09-22 | 2023-10-31 | 四川中豪食品有限公司 | Material machine is fried to hot pot seasoning |
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