CN110081480B - Fume exhauster - Google Patents
Fume exhauster Download PDFInfo
- Publication number
- CN110081480B CN110081480B CN201810073411.1A CN201810073411A CN110081480B CN 110081480 B CN110081480 B CN 110081480B CN 201810073411 A CN201810073411 A CN 201810073411A CN 110081480 B CN110081480 B CN 110081480B
- Authority
- CN
- China
- Prior art keywords
- air inlet
- cover
- inlet channel
- range hood
- silencing device
- 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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- 239000003517 fume Substances 0.000 title claims abstract description 31
- 230000030279 gene silencing Effects 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims description 27
- 239000000779 smoke Substances 0.000 claims description 27
- 230000009467 reduction Effects 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003584 silencer Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
- Ventilation (AREA)
Abstract
The invention relates to a range hood, which comprises a shell and a fume collecting hood arranged below the shell, wherein a fan system is arranged in the shell, and the fan system is provided with a front air inlet channel and a rear air inlet channel, and is characterized in that: a movable baffle capable of opening or closing the rear air inlet channel is arranged in the shell, a silencing device is arranged in the fume collecting hood, and the silencing device is arranged in the rear air inlet channel. The invention has the advantages that: the movable baffle capable of opening or closing the rear air inlet channel is arranged in the shell of the range hood, the silencing device is arranged in the rear air inlet channel, and when silencing is needed, the silencing device works, so that the noise of a flue in the range hood is reduced; when the flue of the range hood is in a large resistance state, the movable baffle closes the rear air inlet channel, and the silencing device works, so that noise in the rear air inlet channel is reduced more effectively.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a range hood.
Background
With the improvement of living standard, various household appliances are rapidly popularized, and the range hood becomes one of the indispensable kitchen household appliances in modern families and is used for discharging the oil smoke generated in the cooking process of the cooking range.
At present, the European style range hood generally comprises a fan, a fan outer cover and a fume collecting hood arranged below the fan outer cover, wherein the fan comprises a volute, an impeller and a motor for driving the impeller. The European-style range hood adopts single-side air intake, thereby having small air intake area and small oil smoke discharge. In order to overcome the defect of single air intake, a double-side air intake range hood is disclosed in the prior art, such as a range hood with an air suction double-injection acceleration function disclosed in Chinese patent application No. 201110027636.1 (issued publication No. CN 102072515A), wherein the range hood is provided with a case and a fume collecting hood, a volute is arranged in the case, an impeller and a motor are arranged in the volute, a front air inlet and a rear air inlet are arranged on the volute, a first fume channel is arranged from the starting end of a fume collecting area of the fume collecting hood to the front air inlet, a second fume channel is arranged from the starting end of the fume collecting area of the fume collecting hood to the rear air inlet, the diameters of the two fume channels are gradually reduced, the rising of airflow is facilitated, and the fume is accelerated to be sucked away, so that the fume suction effect is improved. However, because two oil smoke channels are formed, oil smoke enters the fan from the front air inlet and the rear air inlet, and the noise of the range hood mainly comes from the inside of the centrifugal fan, so that the centrifugal fan can radiate larger noise outwards through the two air inlets in the working process.
In order to reduce noise, for example, in chinese patent application No. 200610050639.6 (issued to CN1844758 a), a fan volute structure of a double-sided air intake euro-type range hood is disclosed, wherein the ratio of the radius of curvature of the edge profile of the front cover plate to the radius of curvature of the edge profile of the rear cover plate at the volute tongue is 8:18.5, the radius of the volute tongue is continuously increased from the front cover plate to the rear cover plate to form a conical surface, and simultaneously, the tongue bus generates an inclination angle relative to the front and rear axes of the volute along with the increase of the radius of the volute tongue, because the impeller outlet air flow of the centrifugal fan is unevenly distributed along the axial direction, the impeller outlet flow velocity of the double-sided air intake is gradually increased from the front end ring to the middle ring and then gradually decreased from the middle ring to the rear end ring, the structure is reasonable for a single-sided air intake centrifugal fan, but the noise reduction effect is limited.
Accordingly, there is a need for further improvements to existing range hoods.
Disclosure of Invention
The invention aims to solve the technical problem of providing a range hood capable of effectively reducing noise aiming at the current state of the art.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a range hood, includes the casing and locates the collection petticoat pipe of casing below, casing internally mounted has fan system, fan system has preceding air inlet channel and back air inlet channel, its characterized in that: the movable baffle capable of opening or closing the rear air inlet channel is arranged in the shell, the silencing device is arranged in the fume collecting hood, and the silencing device is arranged in the rear air inlet channel.
Preferably, the range hood comprises a first driving mechanism for driving the movable baffle to move, a second driving mechanism for driving the silencing device to move relative to the fume collecting hood, and a controller for controlling the first driving mechanism and the second driving mechanism to synchronously work. Therefore, when the rear air inlet channel is opened or closed, the silencing device can be simultaneously opened, so that noise in the flue of the range hood is effectively reduced.
The silencer has various structural forms, preferably, the silencer comprises an outer cover and sound absorbing cotton arranged in the outer cover, a plurality of first through holes are formed in the upper portion of the outer cover, a plurality of second through holes are formed in the position corresponding to the outer cover, the first through holes and the second through holes form channels communicated with the rear air inlet channel, and the silencer is driven by the second driving mechanism to transversely move left and right so that the channels are correspondingly opened or closed. Therefore, by controlling the opening or closing of the channel, the noise in the front air inlet channel and the rear air inlet channel of the range hood can be reduced more effectively when the noise is required to be reduced.
The structure form of dustcoat is multiple, preferably, the dustcoat is including left side board, right side board, preceding curb plate and connect the roof at left side board, right side board and preceding curb plate top edge, roof and preceding curb plate on all seted up first through-hole, the collection petticoat pipe is in corresponding roof and preceding curb plate on the position seted up the second through-hole.
In order to facilitate guiding the oil fume and avoid losing the amount of wind and noise reduction simultaneously, preferably, fan system is including the spiral case, the spiral case is including preceding apron and back shroud, be connected with the air deflector of downward bulge between the lower limb of preceding apron and back shroud, the air deflector is including preceding guide plate and back guide plate, preceding guide plate is from top to bottom gradually the slope of rear side, the movable baffle sets up preceding guide plate's upper portion and along this preceding guide plate up-and-down motion, offer the confession on the back guide plate the trompil that movable baffle passed. Therefore, the oil smoke channel is divided into the front air inlet channel and the rear air inlet channel through the air deflector, so that the flow dividing function is realized, the flow can be guided and reduced in noise, and the air flow is more stable; in addition, when the flue is in the big resistance, the movable baffle moves downwards along preceding guide plate to close back air inlet passageway, back air inlet passageway forms the chamber of making an uproar falls, on the one hand, avoids the loss of air quantity, on the other hand, and sound absorbing device falls the chamber of making an uproar to making an uproar, thereby the noise is reduced effectively.
In order to further reduce noise, preferably, the rear baffle is inclined from top to bottom to the front side, the rear baffle is located in the rear air inlet channel, and a plurality of noise reduction holes are formed in the rear baffle.
The second driving mechanism has various structural forms, preferably, the second driving mechanism comprises a motor and a telescopic rod, one end of the telescopic rod is connected with the output end of the motor, and the other end of the telescopic rod is connected with the movable baffle.
In order to achieve the clean and tidy spiral case and reduce noise, the oil collecting device preferably further comprises an oil guide pipe and an oil collecting cup, wherein the oil collecting cup is arranged on the fume collecting hood and positioned below the silencing device, one end of the oil guide pipe is connected with an oil leakage hole of the spiral case, and the other end of the oil guide pipe points to an opening of the oil collecting cup. Therefore, the greasy dirt on the spiral case is conveniently guided into the oil collecting cup, and the spiral case is convenient to clean; at the same time, the interference to the flow of the flue gas is reduced, thereby further reducing the noise.
Preferably, the silencing device is provided with a perforation for the oil pipe to pass through, and the silencing device can relatively move relative to the oil pipe.
In order to increase the fume suction effect, the smoke exhaust ventilator preferably further comprises a smoke guide plate, wherein the smoke guide plate is arranged below the air inlet of the fume collecting hood.
Compared with the prior art, the invention has the advantages that: the movable baffle capable of opening or closing the rear air inlet channel is arranged in the shell of the range hood, the silencing device is arranged in the rear air inlet channel, and when silencing is needed, the silencing device works, so that the noise of a flue in the range hood is reduced; when the flue of the range hood is in a large resistance state, the movable baffle closes the rear air inlet channel, and the silencing device works, so that noise in the rear air inlet channel is reduced more effectively.
Drawings
Fig. 1 is a schematic structural view of a range hood in an operating state according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1 at another angle (with the channel in an open state);
FIG. 3 is a schematic view of a part of a structure of a movable baffle in a high position according to an embodiment of the present invention;
FIG. 4 is a schematic view of a part of a structure of a movable baffle in a low position according to an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of FIG. 4 at another angle (with the channel in a closed state);
fig. 6 is a schematic view of a part of a structure of a range hood in a non-working state according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a sound absorbing device according to an embodiment of the present invention;
FIG. 8 is a schematic view showing a three-dimensional exploded structure of a muffler device according to an embodiment of the present invention;
FIG. 9 is an enlarged schematic view of the portion A in FIG. 2;
FIG. 10 is an enlarged schematic view of the portion B in FIG. 5;
fig. 11 is a schematic view of a part of the structure of a volute according to an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 11, the range hood according to the embodiment of the present invention includes a housing 1, a fume collecting hood 2, an oil pipe 7, an oil collecting cup 8, a fume guide plate 6, a first driving mechanism 43 for driving a movable baffle 5 to move, a second driving mechanism 50 for driving a muffler device 4 to move relative to the fume collecting hood 2, and a controller (not shown), wherein,
a fan system is arranged in the shell 1, the fan system is provided with a front air inlet channel 111 and a rear air inlet channel 112, and a movable baffle 5 capable of opening or closing the rear air inlet channel 112 is arranged in the shell 1; the fan system comprises a volute 3, the volute 3 comprises a front cover plate 31 and a rear cover plate 32, a downward-protruding air deflector 33 is connected between the lower edges of the front cover plate 31 and the rear cover plate 32, the air deflector 33 comprises a front air deflector 331 and a rear air deflector 332, the front air deflector 331 is gradually inclined to the rear side from top to bottom, the movable baffle 5 is arranged on the upper portion of the front air deflector 331 and moves up and down along the front air deflector 331, and an opening 330 for the movable baffle 5 to pass through is formed in the rear air deflector 332.
The fume collecting hood 2 is arranged below the casing 1, the silencing device 4 is arranged in the fume collecting hood 2, the silencing device 4 is arranged in the rear air inlet channel 112, the silencing device 4 comprises an outer cover 42 and sound absorbing cotton 41 arranged in the outer cover 42, a plurality of first through holes 420 are formed in the upper portion of the outer cover 42, a plurality of second through holes 20 are formed in the fume collecting hood 2 at positions corresponding to the outer cover 42, specifically, the outer cover 42 comprises a left side plate 421, a right side plate 422, a front side plate 423 and a top plate 424 connected to the top edges of the left side plate 421, the right side plate 422 and the front side plate 423, the front side plate 423 is gradually inclined from top to bottom to the front side, the top plate 424 and the front side plate 423 are respectively provided with first through holes 420, the fume collecting hood 2 is provided with second through holes 20 corresponding to the top plate 424 and the front side plate 423, the first through holes 420 and the second through holes 20 form channels 200 communicated with the rear air inlet channel 112, and the silencing device 4 is driven by a second driving mechanism 50 to move transversely left and right so that the channels 200 are correspondingly opened or closed.
In order to further reduce noise, the rear baffle 332 of the present embodiment is inclined from top to bottom to the front side, the rear baffle 332 is located in the rear air intake channel 112, and a plurality of noise reduction holes 332a are formed in the rear baffle 332; namely, when the interior of the flue of the range hood is in a large resistance state, the movable baffle 5 moves downwards along the front guide plate 331, namely, the movable baffle 5 is in a low position state, the rear air inlet channel 112 forms a noise reduction cavity, and noise in the noise reduction cavity is absorbed through the sound absorption structure 4, so that the noise in the rear air inlet channel 112 is further reduced.
In this embodiment, the controller is configured to control the first driving mechanism 43 and the second driving mechanism 50 to operate synchronously, where the second driving mechanism has multiple structural forms, in this embodiment, the second driving mechanism 50 includes a motor 501 and a telescopic rod 502, one end of the telescopic rod 502 is connected to an output end of the motor 501, and the other end is connected to the movable baffle 5; the first driving mechanism 43 is located between the fume collecting hood 2 and the silencing device 4, the driving output end of the first driving mechanism 43 is connected to the outer cover 42, and the silencing device 4 moves transversely and leftwards and rightwards under the driving of the first driving mechanism 43.
In order to increase the oil smoke absorbing effect, the smoke guide plate 6 is arranged below the air inlet of the smoke collecting cover 2 and can swing up and down. Thus, after the range hood is started, the smoke guide plate 6 can swing to a specific angle to realize the optimal smoke suction effect, and when the range hood is shut down, the smoke guide plate 6 returns to the initial position, so that the comfortable appearance feeling is given to a user.
In this embodiment, the oil collecting cup 8 is mounted on the fume collecting hood 2 and is located below the silencing device 4, one end of the oil guide pipe 7 is connected with the oil leakage hole 30 of the volute 3, the other end points to the opening 81 of the oil collecting cup 8, specifically, a through hole 40 through which the oil guide pipe 7 passes is formed in the silencing device 4, and the silencing device 4 relatively moves relative to the oil guide pipe 7 under the drive of the first driving mechanism 43.
In this embodiment, the working process of the range hood is as follows:
when the range hood is in a working state, the smoke guide plate 6 swings downwards, and when the range hood needs to be silenced, the first driving mechanism 43 drives the silencing device 4 to transversely move left and right relative to the smoke collecting hood 2, so that the first through holes 420 and the second through holes 20 are aligned, namely the channel 200 can be opened, and the noise in a flue of the range hood is absorbed by the sound absorbing cotton 41 of the silencing device 4, so that the noise can be effectively reduced; when the flue is in a large resistance state, the movable baffle 5 moves downwards along the front guide plate 331 so as to close the rear air inlet channel 112, the rear air inlet channel 112 forms a noise reduction cavity, and the sound absorbing device 4 works so as to further absorb sound of the rear air inlet channel 112; when the sound absorption is finished, the first driving mechanism 43 drives the muffler device 4 to move, so that the first through hole 420 and the second through hole 20 are staggered, and at this time, the channel 200 is in a closed state.
Claims (7)
1. The utility model provides a range hood, includes casing (1) and locates collection petticoat pipe (2) of casing (1) below, casing (1) internally mounted has fan system, fan system has preceding air inlet channel (111) and back air inlet channel (112), its characterized in that: the inside of the shell (1) is provided with a movable baffle (5) capable of opening or closing the rear air inlet channel (112), the inside of the smoke collecting cover (2) is provided with a silencing device (4), the silencing device (4) is arranged in the rear air inlet channel (112), the smoke collecting cover comprises a first driving mechanism (43) for driving the movable baffle (5) to move and a second driving mechanism (50) for driving the silencing device (4) to move relative to the smoke collecting cover (2), the smoke collecting cover further comprises a controller for controlling the first driving mechanism (43) and the second driving mechanism (50) to synchronously work, the silencing device (4) comprises a cover (42) and sound absorbing cotton (41) arranged in the cover (42), the upper part of the cover (42) is provided with a plurality of first through holes (420), the smoke collecting cover (2) is provided with a plurality of second through holes (20) at positions corresponding to the cover (42), the first through holes (420) and the second through holes (20) form a controller for controlling the first driving mechanism (43) and the second driving mechanism (50) to synchronously work, the silencing device (4) is communicated with the rear air inlet channel (200) to the left or right side of the smoke collecting cover (4) and the smoke collecting cover (200) is further opened, the smoke collecting cover (4) is correspondingly opened and closed, the smoke guide plate (6) is arranged below the air inlet of the smoke collecting cover (2).
2. The range hood of claim 1, wherein: the outer cover (42) comprises a left side plate (421), a right side plate (422), a front side plate (423) and a top plate (424) connected to the top edges of the left side plate (421), the right side plate (422) and the front side plate (423), the top plate (424) and the front side plate (423) are provided with first through holes (420), and the smoke collecting cover (2) is provided with second through holes (20) at positions corresponding to the top plate (424) and the front side plate (423).
3. The range hood of claim 2, wherein: the fan system comprises a volute (3), the volute (3) comprises a front cover plate (31) and a rear cover plate (32), a downward protruding air deflector (33) is connected between the lower edges of the front cover plate (31) and the rear cover plate (32), the air deflector (33) comprises a front air deflector (331) and a rear air deflector (332), the front air deflector (331) is gradually inclined towards the rear side from top to bottom, the movable baffle (5) is arranged on the upper portion of the front air deflector (331) and moves up and down along the front air deflector (331), and an opening (330) for the movable baffle (5) to pass through is formed in the rear air deflector (332).
4. A range hood according to claim 3, wherein: the rear deflector (332) is gradually inclined towards the front side from top to bottom, the rear deflector (332) is positioned in the rear air inlet channel (112), and a plurality of noise reduction holes (332 a) are formed in the rear deflector (332).
5. The range hood of claim 1, wherein: the second driving mechanism (50) comprises a motor (501) and a telescopic rod (502), one end of the telescopic rod (502) is connected with the output end of the motor (501), and the other end of the telescopic rod is connected with the movable baffle (5).
6. A range hood according to claim 3, wherein: the oil collecting device is characterized by further comprising an oil guide pipe (7) and an oil collecting cup (8), wherein the oil collecting cup (8) is arranged on the fume collecting hood (2) and positioned below the silencing device (4), one end of the oil guide pipe (7) is connected with an oil leakage hole (30) of the volute (3), and the other end of the oil guide pipe is pointed at an opening (81) of the oil collecting cup (8).
7. The range hood of claim 6, wherein: the silencing device (4) is provided with a perforation (40) for the oil guide pipe (7) to pass through, and the silencing device (4) can relatively move relative to the oil guide pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073411.1A CN110081480B (en) | 2018-01-25 | 2018-01-25 | Fume exhauster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073411.1A CN110081480B (en) | 2018-01-25 | 2018-01-25 | Fume exhauster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110081480A CN110081480A (en) | 2019-08-02 |
| CN110081480B true CN110081480B (en) | 2024-02-20 |
Family
ID=67411980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810073411.1A Active CN110081480B (en) | 2018-01-25 | 2018-01-25 | Fume exhauster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110081480B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111174260B (en) * | 2020-02-27 | 2022-02-08 | 宁波方太厨具有限公司 | Fume exhaust fan |
| CN111648981A (en) * | 2020-07-16 | 2020-09-11 | 北京盘道科技有限公司 | Fan with multi-wind-path switching function |
| CN112217331B (en) * | 2020-09-30 | 2022-08-02 | 宁波普林斯电机有限公司 | Brake pump motor with silencing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2493966A1 (en) * | 1980-11-13 | 1982-05-14 | Barbarin Joseph | Extractor hood for cooker - has sound proof enclosure with suction fan slung from top surface |
| CN101307928A (en) * | 2008-07-01 | 2008-11-19 | 浙江大学 | Energy-saving fume exhauster with right and left air inlet capable of switching |
| JP2015064175A (en) * | 2013-09-26 | 2015-04-09 | パナソニック株式会社 | Range hood |
| CN106989424A (en) * | 2017-05-10 | 2017-07-28 | 佛山市樱顺卫厨用品有限公司 | A kind of cigarette machine and its noise-reduction method with centrifugal blower |
| CN107525117A (en) * | 2017-10-23 | 2017-12-29 | 中山市智辉科技服务有限公司 | A kind of silencing means for lampblack absorber |
| CN208170467U (en) * | 2018-01-25 | 2018-11-30 | 宁波方太厨具有限公司 | A kind of range hood |
-
2018
- 2018-01-25 CN CN201810073411.1A patent/CN110081480B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2493966A1 (en) * | 1980-11-13 | 1982-05-14 | Barbarin Joseph | Extractor hood for cooker - has sound proof enclosure with suction fan slung from top surface |
| CN101307928A (en) * | 2008-07-01 | 2008-11-19 | 浙江大学 | Energy-saving fume exhauster with right and left air inlet capable of switching |
| JP2015064175A (en) * | 2013-09-26 | 2015-04-09 | パナソニック株式会社 | Range hood |
| CN106989424A (en) * | 2017-05-10 | 2017-07-28 | 佛山市樱顺卫厨用品有限公司 | A kind of cigarette machine and its noise-reduction method with centrifugal blower |
| CN107525117A (en) * | 2017-10-23 | 2017-12-29 | 中山市智辉科技服务有限公司 | A kind of silencing means for lampblack absorber |
| CN208170467U (en) * | 2018-01-25 | 2018-11-30 | 宁波方太厨具有限公司 | A kind of range hood |
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| Publication number | Publication date |
|---|---|
| CN110081480A (en) | 2019-08-02 |
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