CN109595644B - Fume exhauster - Google Patents
Fume exhauster Download PDFInfo
- Publication number
- CN109595644B CN109595644B CN201710924450.3A CN201710924450A CN109595644B CN 109595644 B CN109595644 B CN 109595644B CN 201710924450 A CN201710924450 A CN 201710924450A CN 109595644 B CN109595644 B CN 109595644B
- Authority
- CN
- China
- Prior art keywords
- guide plate
- fan
- air inlet
- range hood
- breaking 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.)
- Active
Links
- 239000003517 fume Substances 0.000 title abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 239000000779 smoke Substances 0.000 abstract description 10
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 5
- 238000010411 cooking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction 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)
- Ventilation (AREA)
Abstract
The invention discloses a range hood, which comprises a case and a fan arranged in the case, wherein the fan is provided with an air inlet and is characterized in that: the front side of fan is provided with the vortex breaker around the periphery at the air intake, vortex breaker includes first guide plate, the second guide plate of relative setting and connects the third guide plate between first guide plate and second guide plate top, the distance between first guide plate and the second guide plate reduces by the air intake lower side upwards gradually, the third guide plate is located the air intake top. By arranging the vortex breaking device at the periphery of the air inlet of the fan, the oil smoke airflow entering from the fume collecting hood flows in a smooth diversion channel formed by the vortex breaking device before entering the air inlet of the fan, so that the momentum loss generated by local sudden expansion in the flow channel is reduced, and the boundary layer separation and noise caused by the momentum loss are reduced.
Description
Technical Field
The invention relates to kitchen appliances, in particular to a range hood.
Background
The range hood has become one of the indispensable kitchen appliances in modern families. The conventional range hood comprises a top suction type range hood and a near suction type range hood, wherein the top suction type range hood utilizes the principle of rising hot air to suck and discharge the naturally rising oil smoke generated during cooking, and the range hood has wider and wider application due to the advantages of neatness, light weight, small occupied space and the like, but the suction effect of a power source is reduced due to the fact that the power source is far away from a cooking bench, and the oil smoke cannot be completely sucked; the near-suction type range hood utilizes vortex wind pressure to keep away, absorbs most of oil smoke which is closer to the cooking bench in an arc form, can reduce adverse effects on human health, and the power source is closer to the cooking bench, so that the suction effect of the power source is basically not reduced, but the oil smoke cannot be caused by few upward escaping oil smoke due to higher rising speed of the oil smoke.
An existing range hood, such as a range hood disclosed in China patent with the application number of 201420665919.8, comprises a shell, a fume collecting hood, a centrifugal fan, a panel, an oil net, a guide plate and an oil receiving groove, wherein the fume collecting hood is arranged at the top of the shell, the centrifugal fan is arranged in the fume collecting hood, and an air inlet of the centrifugal fan faces forward; another example is a range hood disclosed in chinese patent application No. 201710090915.X, including shell, baffle and fan subassembly, the baffle is established inside the shell and is separated into front side cavity and the rear side cavity of arranging along the fore-and-aft direction with the shell inside, is equipped with main air intake on the baffle, and fan subassembly supports on the baffle, and at least part fan subassembly is located the rear side cavity, and the air inlet port of fan subassembly is established at main air intake department and is connected with front side cavity.
In these conventional extractor hoods, there are several areas of suddenly enlarged fluid cross-section, namely local sudden expansion, in the fluid channel through which the internal air flows, and these local sudden expansion are mainly located between the fume collecting hood and the fan connection port and between the current collector and the impeller front end ring, and generally, the loss generated by the local sudden expansion is much greater than the loss along the path of the short pipeline, especially, the higher the speed is, the more obvious the loss difference is, the loss generated by the local sudden expansion is the main energy loss source in the fluid flow process, and the local sudden expansion generates larger resistance, and is accompanied by the separation of the boundary layer and the increase of noise. Therefore, in order to effectively reduce noise and reduce local loss of the range hood, the structure of the local abrupt expansion part in the fluid channel needs to be improved.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art and provides a range hood capable of reducing the energy loss of fluid flow and noise.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a range hood, includes quick-witted case and sets up the fan in quick-witted incasement, the fan has air intake, its characterized in that: the front side of fan is provided with the vortex breaker around the periphery at the air intake, vortex breaker includes first guide plate, the second guide plate of relative setting and connects the third guide plate between first guide plate and second guide plate top, the distance between first guide plate and the second guide plate reduces by the air intake lower side upwards gradually, the third guide plate is located the air intake top.
In order to better guide the air flow and avoid local abrupt change in the flow channel, the first guide plate is gradually inclined from the lower part of the air inlet to the second guide plate until the edge of the air inlet of the fan is close to the first guide plate, and the second guide plate is gradually inclined from the lower part of the air inlet to the upper part of the air inlet until the edge of the air inlet of the fan is close to the second guide plate.
Preferably, the inclination angle of the first guide plate and the second guide plate relative to the vertical direction is not more than 60 degrees.
In order to guide the top air flow to enter the air inlet of the fan, the third guide plate is in an upward convex arc shape, the third guide plate and the first guide plate are in smooth transition, and the third guide plate and the second guide plate are in smooth transition.
Preferably, in order to make the airflow smoother, the shape of the third guide plate is consistent with that of the corresponding position of the air inlet.
In order to effectively reduce noise when the range hood operates, at least one of the first guide plate, the second guide plate and the third guide plate is densely provided with first sound absorption holes.
In order to facilitate the installation of the vortex breaking device, the vortex breaking device further comprises an installation plate used for fixing the vortex breaking device in the case, and the installation plate is arranged on the outer side of the area surrounded by the guide plates.
In order to further reduce the noise of the fan, side coamings are respectively arranged on two sides of the mounting plate, one side coamings correspond to the first guide plates and are arranged at intervals, the other side coamings correspond to the second guide plates and are respectively arranged at intervals, and second sound absorption holes are densely distributed in at least one side coamings.
In order to reduce audible sound components in a small part of noise transmitted from the fan, noise generated when the range hood operates is further reduced, and a space between the first guide plate and the side wall plate on the corresponding side and a space between the second guide plate and the side wall plate on the corresponding side are respectively filled with sound absorbing cotton.
In order to realize direct suction and direct discharge, the negative pressure area is concentrated, the resistance of an outlet pipeline is reduced, smoke is discharged more smoothly, and an air inlet of the fan faces forwards and is obliquely arranged in the case along the horizontal direction.
Compared with the prior art, the invention has the advantages that: by arranging the vortex breaking device at the periphery of the air inlet of the fan, the oil smoke airflow entering from the fume collecting hood flows in a smooth diversion channel formed by the vortex breaking device before entering the air inlet of the fan, so that the momentum loss generated by local sudden expansion in the flow channel is reduced, and the boundary layer separation and noise caused by the momentum loss are reduced.
Drawings
Fig. 1 is a schematic view of a range hood according to the present invention;
fig. 2 is a schematic view of a front cover of a hidden chassis of the range hood according to the present invention;
fig. 3 is a sectional view of the range hood of the present invention;
fig. 4 is a schematic view of a vortex breaking device (hidden sound absorbing cotton) of the range hood according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Referring to fig. 1 to 4, a range hood includes a hood 1, a cabinet 2 above the hood 1, and for convenience of description, hereinafter, the terms "front", "rear", "left", "right", "up", "down" refer to the direction of a user relative to the range hood when the range hood is in use, and are not limited in structure.
In the present embodiment, the cabinet 2 includes a front cover 21, side plates 22 located on the left and right sides, and a rear cover 23. A fan 3 is arranged in the case 2, and the fan 3 is preferably a ternary fan, and the ternary fan can adopt the prior art, such as the structure disclosed in the patent application number 201620102790.9 of the applicant. The air inlet 31 of the blower 3 is directed forward and is disposed in the cabinet 2 obliquely to the horizontal direction. The arrangement mode of the fan 3 realizes direct suction and direct discharge, and the negative pressure area is concentrated, so that the resistance of an outlet pipeline is reduced, and smoke discharge is smoother.
The vortex breaker 4 is arranged between the fan 3 and the front cover 21 of the case 2, so that the flow passage in the case 2 before entering the fan 3 is smooth, the momentum loss generated by local sudden expansion in the flow passage is reduced, and the boundary layer separation and noise caused by the momentum loss are reduced.
The vortex breaker 4 includes a first baffle 41, a second baffle 42, which are disposed opposite to each other, and a third baffle 43 connected between the tops of the first and second baffles 41, 42, each having a width extending in the front-rear direction. The first baffle 41 gradually inclines from the lower part of the air inlet 31 to the middle (inclines towards the second baffle 42) from the side plate 22 near the left side of the chassis 2 until the edge of the air inlet 31 near the fan 3, the second baffle 42 gradually inclines from the lower part of the air inlet 31 to the middle (inclines towards the first baffle 41) from the side plate 22 near the right side of the chassis 2 until the edge of the air inlet 31 near the fan 3, that is, the first baffle 41 and the second baffle 42 incline in the vertical direction, and the distance between the two baffles gradually decreases from the lower part of the air inlet 31 to the upper part. Preferably, the inclination angle of the first and second deflectors 41, 42 with respect to the vertical direction is not more than 60 degrees. The third guide plate 43 is in an upward convex arc shape, two ends of the third guide plate 43 are respectively connected with the tops of the first guide plate 41 and the second guide plate 42, and the three guide plates can be integrally formed. In order to better guide the air flow, the third baffle 43 and the first baffle 41 are smoothly transited, and the third baffle 43 and the second baffle 42 are smoothly transited. The third deflector 43 surrounds the upper side of the air inlet 31 of the blower 3 and is in conformity with the shape of the corresponding position of the air inlet 31.
The vortex breaker 4 further includes a mounting plate 44 for fixing the vortex breaker 4 in the casing 2, the mounting plate 44 is disposed outside the area surrounded by the guide plates, and is consistent with the inclination direction of the fan 3, and the shape and size of the mounting plate 44 are adapted to the casing 2, and the mounting plate 44 can be directly fixed to the fan 3. Side fences 45 are provided on both sides of the mounting plate 44, respectively, and the side fences 45 have widths in the front and rear directions and each extend upward from the bottom of the casing 2. Each side wall 45 corresponds to the first baffle 41 or the second baffle 42, and is arranged at intervals, and the side wall 45 is closer to the side plate 22 on the corresponding side of the chassis 2 than the first baffle 41 or the second baffle 42, and the side wall 45 may be vertical. Smooth transition is realized between the side wall plate 45 and the bottom of the first deflector 41 and between the side wall plate 45 and the bottom of the second deflector 42.
The first sound absorption holes 461 are densely distributed on the first guide plate 41 and/or the second guide plate 42, the first sound absorption holes 461 can be densely distributed on the third guide plate 43, and the second sound absorption holes 462 are densely distributed on at least one side wall plate 45, so that noise generated during operation of the range hood can be effectively reduced. The space between the first baffle 41 and the side wall plate 45 on the corresponding side, and the space between the second baffle 41 and the side wall plate 45 on the corresponding side can be respectively filled with sound absorbing cotton 47, so that when a small part of noise transmitted from the fan 3 reaches the mounting plate 44, audible sound components in the part of noise can be reduced through the sound absorbing cotton 47, so that noise generated when the range hood operates is further reduced, the noise reduction effect of the vortex breaking device 4 is further improved, and the user experience is further improved.
Claims (8)
1. The utility model provides a range hood, includes quick-witted case (2) and sets up fan (3) in quick-witted case (2), fan (3) have air intake (31), its characterized in that: the front side of the fan (3) is provided with a vortex breaking device (4) surrounding the periphery of the air inlet (31), the vortex breaking device (4) comprises a first guide plate (41), a second guide plate (42) and a third guide plate (43) connected between the tops of the first guide plate (41) and the second guide plate (42), the distance between the first guide plate (41) and the second guide plate (42) is gradually reduced from the lower side of the air inlet (31) to the upper side of the air inlet (31);
the vortex breaking device (4) further comprises a mounting plate (44) for fixing the vortex breaking device (4) in the case (2), and the mounting plate (44) is arranged at the outer side of the area surrounded by the guide plates;
the two sides of the mounting plate (44) are respectively provided with side coamings (45), one side coamings (45) correspond to the first guide plate (41) and are arranged at intervals, the other side coamings (45) correspond to the second guide plate (42) and are respectively arranged at intervals, and second sound absorption holes (462) are densely distributed in at least one side coamings (45).
2. The range hood of claim 1, wherein: the first guide plate (41) is gradually inclined to the second guide plate (42) from the lower part of the air inlet (31) to the upper part until the second guide plate is close to the edge of the air inlet (31) of the fan (3), and the second guide plate (42) is gradually inclined to the first guide plate (41) from the lower part of the air inlet (31) to the upper part until the second guide plate is close to the edge of the air inlet (31) of the fan (3).
3. The range hood of claim 2, wherein: the inclination angle of the first guide plate (41) and the second guide plate (42) relative to the vertical direction is not more than 60 degrees.
4. The range hood of claim 1, wherein: the third guide plate (43) is in an upward convex arc shape, smooth transition is achieved between the third guide plate (43) and the first guide plate (41), and smooth transition is achieved between the third guide plate (43) and the second guide plate (42).
5. The range hood of claim 4, wherein: the third guide plate (43) is consistent with the corresponding position of the air inlet (31).
6. The range hood of claim 1, wherein: at least one of the first guide plate (41), the second guide plate (42) and the third guide plate (43) is densely provided with first sound absorption holes (461).
7. The range hood according to any one of claims 1 to 6, wherein: the space between the first guide plate (41) and the side coaming (45) on the corresponding side and the space between the second guide plate (42) and the side coaming (45) on the corresponding side are respectively filled with sound-absorbing cotton (47).
8. The range hood according to any one of claims 1 to 6, wherein: the air inlet (31) of the fan (3) faces forward and is obliquely arranged in the case (2) with the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924450.3A CN109595644B (en) | 2017-09-30 | 2017-09-30 | Fume exhauster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924450.3A CN109595644B (en) | 2017-09-30 | 2017-09-30 | Fume exhauster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595644A CN109595644A (en) | 2019-04-09 |
| CN109595644B true CN109595644B (en) | 2024-01-16 |
Family
ID=65956912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710924450.3A Active CN109595644B (en) | 2017-09-30 | 2017-09-30 | Fume exhauster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595644B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484112A (en) * | 2020-11-16 | 2021-03-12 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113375204B (en) * | 2021-06-25 | 2023-04-14 | 宁波方太厨具有限公司 | Range hood and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2929533Y (en) * | 2006-06-05 | 2007-08-01 | 杭州老板实业集团有限公司 | Fume exhaust fan with air sucking and noise reducing structure |
| CN101825306A (en) * | 2009-12-08 | 2010-09-08 | 美的集团有限公司 | Bellows of range hood |
| CN102042628A (en) * | 2011-01-10 | 2011-05-04 | 宁波方太厨具有限公司 | Range hood with flow-stabilizing and noise-reducing structure |
| KR20110052935A (en) * | 2009-11-13 | 2011-05-19 | 주식회사 하츠 | Noise reduction range hood |
| CN201925993U (en) * | 2011-01-10 | 2011-08-10 | 宁波方太厨具有限公司 | Range hood with current-stabilization noise-reduction structure |
| CN207230674U (en) * | 2017-09-30 | 2018-04-13 | 宁波方太厨具有限公司 | A kind of range hood |
-
2017
- 2017-09-30 CN CN201710924450.3A patent/CN109595644B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2929533Y (en) * | 2006-06-05 | 2007-08-01 | 杭州老板实业集团有限公司 | Fume exhaust fan with air sucking and noise reducing structure |
| KR20110052935A (en) * | 2009-11-13 | 2011-05-19 | 주식회사 하츠 | Noise reduction range hood |
| CN101825306A (en) * | 2009-12-08 | 2010-09-08 | 美的集团有限公司 | Bellows of range hood |
| CN102042628A (en) * | 2011-01-10 | 2011-05-04 | 宁波方太厨具有限公司 | Range hood with flow-stabilizing and noise-reducing structure |
| CN201925993U (en) * | 2011-01-10 | 2011-08-10 | 宁波方太厨具有限公司 | Range hood with current-stabilization noise-reduction structure |
| CN207230674U (en) * | 2017-09-30 | 2018-04-13 | 宁波方太厨具有限公司 | A kind of range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109595644A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211625390U (en) | Fume exhaust fan | |
| CN212618543U (en) | Fume exhaust fan | |
| CN107327885B (en) | Shunting range hood | |
| CN201034091Y (en) | Fan housing of double air intake smoke exhaust ventilator | |
| CN109595644B (en) | Fume exhauster | |
| CN109595633B (en) | Fume exhauster | |
| CN107990392B (en) | Fume exhauster | |
| CN109595639B (en) | Near-suction type range hood | |
| CN110939947A (en) | Integrated kitchen with air ducting | |
| CN109764375B (en) | Fume exhauster | |
| CN207422306U (en) | A kind of range hood | |
| CN107990394B (en) | Noise-reducing range hood with double air inlet structures | |
| CN109595629B (en) | Near-suction type range hood | |
| CN107990390B (en) | Fume exhaust fan | |
| CN109595646B (en) | Fan system and range hood with same | |
| CN115388444A (en) | Smoke machine head and integrated stove | |
| CN216557243U (en) | Fume exhaust fan | |
| CN207230674U (en) | A kind of range hood | |
| CN210463154U (en) | Smoke exhaust ventilator | |
| CN209042480U (en) | Side extraction cooking fume extractor | |
| CN109780600B (en) | Fume exhauster | |
| CN109595645B (en) | Near-suction type range hood | |
| CN109595649B (en) | Near-suction type range hood | |
| CN109780599B (en) | Fume exhauster | |
| CN219693364U (en) | Noise-reducing type range hood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |