CN111121122B - Air blowing and sucking device and range hood with same - Google Patents
Air blowing and sucking device and range hood with same Download PDFInfo
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- CN111121122B CN111121122B CN201811285719.9A CN201811285719A CN111121122B CN 111121122 B CN111121122 B CN 111121122B CN 201811285719 A CN201811285719 A CN 201811285719A CN 111121122 B CN111121122 B CN 111121122B
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- air
- air inlet
- blowing
- air outlet
- cavity
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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
- F24C15/2028—Removing cooking fumes using an air curtain
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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
Abstract
The invention discloses a blowing and sucking device, which is characterized in that: the air inlet flow guide device comprises an air inlet cavity and an air inlet communicated with the air inlet cavity, so that the control of the air inlet flow field direction is realized, the air blowing flow guide device comprises an air outlet cavity and an air outlet communicated with the air outlet cavity, so that the control of the air outlet flow field direction is realized, and the air blowing and sucking device further comprises a power device for providing power for the formation of the flow field. Also discloses a range hood with the air blowing and sucking device. By arranging the air blowing and guiding device and the air suction and guiding device, the flow field generated during air suction is connected with the air blowing flow field, so that the effective flow field strength is enhanced, and the smoke leakage prevention capability is greatly enhanced under the condition that the air quantity of the air blowing and guiding device is not changed.
Description
Technical Field
The invention relates to kitchen equipment, in particular to a range hood and a blowing and sucking device applied to the range hood.
Background
The range hood has become one of indispensable kitchen household electrical appliances in modern families, and is used for discharging oil fume generated in the cooking process of a stove. Generally, the range hood comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like.
The top-suction type range hood generally comprises a fume collecting hood and a fan shell positioned on the fume collecting hood, wherein a centrifugal fan is arranged in the fan shell. The top suction type range hood disclosed in the chinese patent application with the application number of 201410315985.7 comprises a smoke collecting hood and an air inlet arranged on the bottom surface of the smoke collecting hood, wherein an oil collecting plate is fixed under the air inlet and forms an air inlet channel with the bottom surface of the air inlet, and a flow guide hood is arranged on the lower surface of the oil collecting plate.
Above-mentioned this kind of range hood, the produced oil smoke of kitchen range below it is at the in-process that rises, through the kuppe with the oil smoke leading-in to the air intake, though this kind of range hood can inhale the oil smoke as far as through the setting of oil collecting plate and kuppe, if the oil smoke volume of production is great or when having the disturbance of external air current, the oil smoke is very easy to escape from the position of collection petticoat pipe both sides, not only can reduce range hood's smoking efficiency from this, if produce the phenomenon that the oil smoke escaped, cause the influence to the environment in kitchen easily, also can influence user's health.
At present, the mode of forming an air curtain is commonly used for preventing oil smoke from escaping, for example, a range hood disclosed in the chinese patent with the application number of 201620118019.0 comprises a range hood body, wherein a smoke inlet is formed in the range hood body, a first air curtain part is arranged on the range hood body, the first air curtain part is provided with a first air outlet, and air flow flowing out from the first air outlet forms an air curtain to prevent the oil smoke from diffusing outwards.
The range hood with the air curtain uses the flow field formed by the air blown out by the air curtain device to block the escape of the oil smoke, and has a certain promotion effect on enhancing the oil smoke absorption effect. However, the oil fume suction effect cannot be better improved because the strength of the flow field is weaker, and the oil fume suction effect cannot be improved because the oil fume suction device occupies too much discharge capacity of the range hood after the flow is increased.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a blowing and sucking device for enhancing the strength of the effective flow field, aiming at the problems existing in the prior art.
The second technical problem to be solved by the invention is to provide a range hood with the air blowing and sucking device, which can improve the smoke leakage prevention capability.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a pressure-vaccum wind device which characterized in that: the air inlet flow guide device comprises an air inlet cavity and an air inlet communicated with the air inlet cavity, so that the control of the air inlet flow field direction is realized, the air blowing flow guide device comprises an air outlet cavity and an air outlet communicated with the air outlet cavity, so that the control of the air outlet flow field direction is realized, and the air blowing and sucking device further comprises a power device for providing power for the formation of the flow field.
Preferably, the air inlet guiding device comprises a first box body, the air inlet cavity is formed in the first box body, and the air inlet is formed in the side wall of the first box body.
In order to realize the control of the air inlet direction and further control the affected peripheral area to form a directional flow field, a guide plate is arranged in the box body and extends from the inner side of the side wall of the first box body to the direction far away from the side wall; the bottom surface of the guide plate forms a first guide surface for guiding the inlet air, the bottom surface of the inner side of the first box body forms a second guide surface for guiding the inlet air, and the air inlet is positioned between the first guide surface and the second guide surface.
Preferably, the first guide surface and the second guide surface are both inclined upward gradually in a direction away from the first side wall and are parallel to each other.
Preferably, the blowing and guiding device comprises a second box body, the air outlet cavity is formed in the second box body, and the air outlet is formed in the bottom of the second box body.
In order to realize the control of the air outlet direction and further control the affected peripheral area, a directional flow field is formed, the second box body comprises a first bottom wall and a second bottom wall, the inner side face of the first bottom wall forms a third guide face for guiding the air outlet, the second bottom wall extends towards the first bottom wall from the direction far away from the first bottom wall, and the second bottom wall is lower than the first bottom wall, so that the air outlet is formed between the first bottom wall and the second bottom wall.
In order to accelerate the air flow, an air inlet of the power device is communicated with an air inlet cavity through a drainage channel, the caliber of the opening part of the drainage channel communicated with the air inlet cavity is larger than that of the opening part of the drainage channel communicated with the air inlet of the power device, and an air outlet of the power device is communicated with an air outlet cavity of the blowing guide device.
In order to accelerate the airflow flow and further drive peripheral gas by utilizing the viscosity of the gas, the section of the air inlet flow guide device is smaller than the section size of the air inlet cavity, and the section of the air outlet flow guide device is smaller than the section size of the air outlet cavity.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides an use range hood as above device that blows and induced drafts, includes the collection petticoat pipe, be formed with the collection smoke chamber of upwards concave in the collection petticoat pipe, the device setting that blows and induced drafts is in the unilateral or multiple sides all around of collection petticoat pipe, collection smoke chamber is kept away from to air inlet guiding device's air intake, guiding device's the air outlet of blowing is towards collection smoke chamber.
Preferably, the air inlet of the air inlet guide device is provided with a plurality of long strips extending in the longitudinal direction, and the air inlets are arranged at intervals in the front and back directions; the air outlet of the blowing flow guide device is in a strip seam shape and extends in the front and rear directions.
Preferably, a first included angle α is formed between an air flow coming from an air inlet of the air inlet flow guide device and the vertical direction, a second included angle β is formed between an air flow blown out from an air outlet of the air blowing flow guide device and the vertical direction, and the value ranges of the two included angles are as follows: 30 ° < α <120 °, 30 ° < β <90 °.
Compared with the prior art, the invention has the advantages that: the blowing and sucking device with the air inlet flow guide function and the air outlet flow guide function is arranged, so that a flow field generated during air sucking is connected with a blowing flow field, the strength of the effective flow field is enhanced, and the smoke leakage prevention capacity is greatly enhanced under the condition that the air quantity of the blowing device is not changed.
Drawings
FIG. 1 is a schematic view of a range hood according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a range hood in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion I of FIG. 2;
FIG. 4 is a schematic view of a blowing and sucking device according to an embodiment of the present invention;
fig. 5 is an exploded structural schematic view of the air blowing and sucking device according to the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1 and 2, a range hood includes a fume collecting hood 1, a box body 2 disposed above the fume collecting hood 1, and a fan system (not shown) may be disposed in the box body 2. An upward concave smoke collecting cavity 11 is formed in the smoke collecting hood 1 so as to collect smoke, and an air inlet 12 is formed in the smoke collecting stove 1 so that the smoke can enter the box body 2 through the smoke collecting cavity 11 and the air inlet 12. The blowing and sucking device 3 is arranged on one side or multiple sides around the fume collecting hood 1.
Referring to fig. 2 to 5, the air blowing and sucking device 3 includes an air intake guiding device 31, a power device 32, and an air blowing and guiding device 33. The direction control of the flow field is realized through the air inlet flow guide device 31 and the air blowing flow guide device 33, the power device 32 provides power for the formation of the flow field, and the power device 32 can be a centrifugal fan, an axial flow fan, a perfusion fan and the like.
The intake air guiding device 31 includes a first housing 311, and a guiding plate 312 disposed in the first housing 311, wherein a bottom surface of the guiding plate 312 forms a first guiding surface 3121, an inner bottom surface of the first housing 311 forms a second guiding surface 313, and the first guiding surface 3121 and the second guiding surface 313 are spaced apart in a longitudinal direction. The first box 311 is hollow to form an air inlet chamber 314.
The first box 311 has a side wall 3111, and an air inlet 315 is formed on the side wall 3111, in this embodiment, the air inlet 315 is a strip-shaped hole extending in the longitudinal direction, and has a plurality of strip-shaped holes arranged in parallel at intervals. The power device 32 is disposed outside the first box 311 and opposite to the side wall 3111, the side wall 3111 is disposed on a side of the first box 311 away from the smoke collection chamber 11, and the power device 32 is disposed on a side of the first box 311 facing the smoke collection chamber 11. In this embodiment, the power device 32 employs a centrifugal fan with double air inlets, and two air inlets 322 of the power device 32 are respectively communicated with the air inlet chamber 314 through the flow guide channels 321. The aperture of the opening part of the drainage channel 321 communicated with the air inlet cavity 314 is larger than that of the opening part of the drainage channel 321 communicated with the power device 32, so that the suction of air flow is accelerated.
The baffle 312 extends from the inner side of the sidewall 3111 of the first housing 311 toward the power unit 32, and the air inlet 315 is located between the first guide surface 3121 and the second guide surface 313. Each of the first guide surface 3121 and the second guide surface 313 is inclined gradually upward in a direction away from the first sidewall 3111. Referring to fig. 3, the first guide surface 3121 and the second guide surface 313 extend upward from left to right, and the air inlets 315 are spaced apart in the front and rear directions.
The air inlet guiding device 31 realizes the direction control of air inlet through the arrangement of the air inlet 315 and the air inlet cavity 314 structure, so as to control the affected peripheral area, form a directional flow field and prevent oil smoke from escaping.
The blower guide 33 includes a second case 331, and a third guide surface 332 formed on the second case 331. The second casing 331 is closely attached to the lower side of the first casing 332, and an air outlet chamber 333 is formed in the second casing 331. The power device 32 has an air outlet 323, and the second housing 331 has an air inlet 3311 corresponding to the air outlet 323 of the power device 32, so that the air outlet 323 of the power device 32 is communicated with the air outlet chamber 333.
The second case 331 includes a first bottom wall 3321 close to the power unit 32 and a second bottom wall 3322 far from the power unit 32, and the inner side surface of the first bottom wall 3321 constitutes the third guide surface 332. The second bottom wall 3322 extends toward the first bottom wall 3321 from a direction away from the first bottom wall 3321, and the second bottom wall 3322 is lower than the first bottom wall 3321, so that an air outlet 3323 is formed between the first bottom wall 3321 and the second bottom wall 3322. In this embodiment, the outlet 3323 is slit-shaped, and the second casing 331 extends in a longitudinal direction thereof. See fig. 3, in the front-to-rear direction. The third guide surface 332 guides the airflow blown by the power unit 32 to flow in a direction away from the power unit 32, and blows the airflow obliquely upward and rightward through the outlet 3323.
As can be seen from the above, the air inlet 315 of the air inlet guiding device 31 and the air outlet 3323 of the air outlet guiding device 32 both have air flow guiding surfaces for defining the direction of the air flow. When the tuyere has only one side guide surface, the flow field direction substantially coincides with the guide surface direction (coanda effect). When the two sides of the tuyere are provided with the guide surfaces, the flow field direction is between the two surfaces and is closer to the direction of the large guide surface.
The air inlet flow guiding device 31 realizes the direction control of the air inlet flow field through the arrangement of the air inlet 315 and the air inlet cavity 314 structure, so as to control the peripheral area and form the required flow field. The cross section of the air inlet 315 of the air inlet flow guiding device 31 is smaller than the cross section of the air inlet cavity 314, and the cross section of the air outlet 3323 of the air outlet flow guiding device 33 is smaller than the cross section of the air outlet cavity 333, so that the airflow has higher flow velocity, and the peripheral air is driven more by the viscosity of the air.
The blowing flow guide device 33 realizes direction control of the air outlet flow field through the arrangement of the air outlet 3323 and the air outlet cavity 333 structure, so as to control the peripheral area, form a required flow field and prevent oil smoke from escaping.
The inlet air flow field points to the air inlet 315 of the inlet air guiding device 31, and the outlet air flow field flows out from the air outlet 3323 of the blowing air guiding device 33. Because the end point of the air inlet power is adjacent to the starting point of the air outlet power, and the components of the air inlet flow field and the air outlet flow field in the horizontal direction are both directed to the inner side of the range hood, the strength of the flow fields in the horizontal direction is superposed. The total flow field points to the air inlet on the fume collecting hood 1 of the range hood to prevent the oil fume from escaping outwards. See the direction of airflow as indicated by the arrows in fig. 2.
The first guide surface 3121 and the second guide surface 313 are parallel, and the air flow from the air inlet 315 forms a first angle α with the vertical direction (i.e., an angle between the first guide surface 3121 and the second guide surface 313 with respect to the vertical direction), and the second bottom wall 3322 of the second housing 331 is inclined with respect to the horizontal plane, so that the air flow from the air outlet 3323 forms a second angle β with the vertical direction (i.e., a count of the second bottom wall 3322 with respect to the vertical direction). Preferably, 30 ° < α <120 °, 30 ° < β <90 °.
The invention connects the flow field generated by air suction with the air blowing flow field by arranging the air blowing flow guide device and the air suction flow guide device, thereby enhancing the strength of the effective flow field and greatly enhancing the smoke leakage prevention capability under the condition that the air quantity of the air blowing flow guide device is not changed.
Claims (11)
1. The utility model provides a pressure-vaccum wind device which characterized in that: comprises an air inlet flow guide device (31) and a blowing flow guide device (33) tightly attached to the lower part of the air inlet flow guide device (31), the air inlet flow guide device (31) comprises an air inlet cavity (314) and an air inlet (315) communicated with the air inlet cavity (314), thereby realizing the control of the direction of the air inlet flow field, the air blowing and guiding device (33) comprises an air outlet cavity (333) and an air outlet (3323) communicated with the air outlet cavity (333), thereby realizing the control of the direction of the air outlet flow field, the air blowing and sucking device also comprises a power device (32) for providing power for the formation of the flow field, the air inlet flow field points to an air inlet (315) of the air inlet flow guide device (31), the air outlet flow field flows out from an air outlet (3323) of the air blowing flow guide device (33), the air inlet (315) and the air outlet (3323) are adjacent to each other, so that the air inlet flow field is connected with the air outlet flow field, and the component directions of the air inlet flow field and the air outlet flow field in the horizontal direction are the same.
2. The air blowing and sucking device according to claim 1, wherein: the air inlet guide device (31) comprises a first box body (311), an air inlet cavity (314) is formed in the first box body (311), and an air inlet (315) is formed in the side wall (3111) of the first box body (311).
3. The air blowing and sucking device according to claim 2, wherein: a guide plate (312) is arranged in the box body (311), and the guide plate (312) extends from the inner side of the side wall (3111) of the first box body (311) to the direction far away from the side wall (3111); the bottom surface of the guide plate (312) forms a first guide surface (3121) for guiding the inlet air, the inner bottom surface of the first box body (311) forms a second guide surface (313) for guiding the inlet air, and the air inlet (315) is positioned between the first guide surface (3121) and the second guide surface (313).
4. The air blowing and sucking device according to claim 3, wherein: the first guide surface (3121) and the second guide surface (313) are each inclined gradually upward in a direction away from the first side wall (3111) and are parallel to each other.
5. The air blowing and sucking device according to claim 1, wherein: the blowing guide device (33) comprises a second box body (331), the air outlet cavity (333) is formed in the second box body (331), and the air outlet (3323) is formed in the bottom of the second box body (331).
6. The air blowing and sucking device according to claim 5, wherein: the second case (331) includes a first bottom wall (3321) and a second bottom wall (3322), the inner side surface of the first bottom wall (3321) forms a third guide surface (332) for guiding the outlet air, the second bottom wall (3322) extends toward the first bottom wall (3321) in a direction away from the first bottom wall (3321), and the second bottom wall (3322) is lower than the first bottom wall (3321) to form the outlet port (3323) between the first bottom wall (3321) and the second bottom wall (3322).
7. The air blowing and sucking device according to any one of claims 1-6, characterized in that: an air inlet (322) of the power device (32) is communicated with the air inlet cavity (314) through a flow guide channel (321), the caliber of a mouth part of the flow guide channel (321) communicated with the air inlet cavity (314) is larger than that of a mouth part of the flow guide channel (321) communicated with the air inlet (322) of the power device (32), and an air outlet (323) of the power device (32) is communicated with an air outlet cavity (333) of the blowing flow guide device (33).
8. The air blowing and sucking device according to any one of claims 1-6, characterized in that: the cross section of an air inlet (315) of the air inlet flow guide device (31) is smaller than that of the air inlet cavity (314), and the cross section of an air outlet (3323) of the air outlet flow guide device (33) is smaller than that of the air outlet cavity (333).
9. A range hood applying the blowing and sucking device according to any one of claims 1 to 8, comprising a fume collecting hood (1), wherein an upward concave fume collecting cavity (11) is formed in the fume collecting hood (1), the blowing and sucking device is arranged on one side or multiple sides of the periphery of the fume collecting hood (1), an air inlet (315) of the air inlet guide device (31) is far away from the fume collecting cavity (11), and an air outlet (3323) of the blowing and guiding device (33) faces the fume collecting cavity (11).
10. The range hood of claim 9, wherein: the air inlet (315) of the air inlet guide device (31) is provided with a plurality of long strips extending in the longitudinal direction, and the air inlets (315) are arranged at intervals in the front and back directions; an air outlet (3323) of the air blowing flow guide device (33) is in a strip seam shape and extends in the front and rear directions.
11. The range hood of claim 10, wherein: the air current that comes from air intake (315) of air inlet guiding device (31) forms first contained angle alpha with vertical direction, the air current that blows off air outlet (3323) of guiding device (33) of blowing forms second contained angle beta with vertical direction, and the value range of above-mentioned two contained angles is: 30 ° < α <120 °, 30 ° < β <90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285719.9A CN111121122B (en) | 2018-10-31 | 2018-10-31 | Air blowing and sucking device and range hood with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285719.9A CN111121122B (en) | 2018-10-31 | 2018-10-31 | Air blowing and sucking device and range hood with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111121122A CN111121122A (en) | 2020-05-08 |
| CN111121122B true CN111121122B (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811285719.9A Active CN111121122B (en) | 2018-10-31 | 2018-10-31 | Air blowing and sucking device and range hood with same |
Country Status (1)
| Country | Link |
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| CN (1) | CN111121122B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674025B (en) * | 2022-05-31 | 2022-08-23 | 杭州老板电器股份有限公司 | Range hood and control method thereof |
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| US4089327A (en) * | 1976-04-12 | 1978-05-16 | Logansport Distributor Inc. | Kitchen exhaust system |
| CN2797933Y (en) * | 2004-11-04 | 2006-07-19 | 高炎康 | Kitchen ventilator |
| CN101038103A (en) * | 2006-03-17 | 2007-09-19 | 安薪实业有限公司 | Auxiliary smoke discharging structure and method thereof |
| CN101858613A (en) * | 2010-07-21 | 2010-10-13 | 林小冬 | Jet flow type smoke exhaust ventilator and fluidic generator thereof |
| CN106594828A (en) * | 2016-12-09 | 2017-04-26 | 宁波方太厨具有限公司 | Ceiling type extractor hood |
| CN107860046A (en) * | 2017-12-26 | 2018-03-30 | 三立安薪（北京）科技有限公司 | Smoke-guiding machine |
| CN107860043A (en) * | 2017-12-15 | 2018-03-30 | 洛阳国琪机电科技有限公司 | A kind of air curtain type oil-stain-preventing mist extractor mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180104976A (en) * | 2017-03-14 | 2018-09-27 | 엘지전자 주식회사 | Kitchen hood |
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2018
- 2018-10-31 CN CN201811285719.9A patent/CN111121122B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089327A (en) * | 1976-04-12 | 1978-05-16 | Logansport Distributor Inc. | Kitchen exhaust system |
| CN2797933Y (en) * | 2004-11-04 | 2006-07-19 | 高炎康 | Kitchen ventilator |
| CN101038103A (en) * | 2006-03-17 | 2007-09-19 | 安薪实业有限公司 | Auxiliary smoke discharging structure and method thereof |
| CN101858613A (en) * | 2010-07-21 | 2010-10-13 | 林小冬 | Jet flow type smoke exhaust ventilator and fluidic generator thereof |
| CN106594828A (en) * | 2016-12-09 | 2017-04-26 | 宁波方太厨具有限公司 | Ceiling type extractor hood |
| CN107860043A (en) * | 2017-12-15 | 2018-03-30 | 洛阳国琪机电科技有限公司 | A kind of air curtain type oil-stain-preventing mist extractor mechanism |
| CN107860046A (en) * | 2017-12-26 | 2018-03-30 | 三立安薪（北京）科技有限公司 | Smoke-guiding machine |
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| CN111121122A (en) | 2020-05-08 |
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