CN111981530A - Range hood with central air curtain - Google Patents
Range hood with central air curtain Download PDFInfo
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- CN111981530A CN111981530A CN201911420114.0A CN201911420114A CN111981530A CN 111981530 A CN111981530 A CN 111981530A CN 201911420114 A CN201911420114 A CN 201911420114A CN 111981530 A CN111981530 A CN 111981530A
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- 239000000779 smoke Substances 0.000 claims abstract description 126
- 230000007704 transition Effects 0.000 claims description 23
- 238000009423 ventilation Methods 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 13
- 239000003517 fume Substances 0.000 claims description 12
- 230000000391 smoking effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 13
- 230000008901 benefit Effects 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F24C15/2035—Arrangement or mounting of filters
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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 range hood with a central air curtain, which comprises a smoke collecting hood, an air box device and an air supply device, wherein the smoke collecting hood is provided with a smoke inlet part and a smoke guide part positioned below the smoke inlet part, the top of the smoke inlet part is provided with a smoke outlet, the bottom of the smoke inlet part is provided with a smoke inlet area, the smoke guide surface on the front surface of the smoke guide part is convexly provided with a vertical central air passage which divides the smoke guide surface into two parts, two opposite side walls of the central air passage are rotational flow surfaces, and the central air passage is provided with at least one row of exhaust holes which are vertically arranged and exhaust towards; the air box device is arranged at the top of the smoke collecting cover and communicated with the smoke outlet, and the air supply device is arranged on the smoke collecting cover and an air supply outlet of the air supply device is communicated with the central air passage. According to the range hood disclosed by the invention, the gas sprayed out of the exhaust hole of the central air passage can form the central air curtain, and the spirally upward air flow is formed under the matching of the air box device and the rotational flow surface of the central air passage, so that the oil smoke is prevented from diffusing and escaping, and the high-efficiency smoke-collecting rotary smoking effect is achieved.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a rotary smoke suction technology of a range hood.
Background
The range hood is a main tool for collecting oil smoke in a kitchen, and how to improve the suction efficiency of the range hood is always important for the design and research of the range hood. When the traditional range hood inhales, the air suction range is a hemispherical area, and air in all directions is sucked indiscriminately. In this air suction mode, the air flow rate is larger at a position close to the air suction port, and the air flow rate is rapidly reduced at a position far away from the air suction port as the distance from the air suction port increases. Therefore, the air speed at the lowest part of the air suction port is reduced, which results in insufficient upward suction force, and the range hood is easily interfered by external factors, such as people walking, fan or cold air running, etc., and disturbed airflow factors are easily influenced, so that oil smoke or pollutants are dissipated along with the disturbed airflow, and the range hood has poor smoke collection and smoking effects.
Disclosure of Invention
The invention aims to solve one of the problems in the prior related art at least to a certain extent, and therefore the invention provides a range hood with a central air curtain, which can form unique spiral upward airflow, prevent oil smoke from diffusing and escaping and achieve the effects of high-efficiency smoke gathering and rotary smoking.
According to the range hood with the central air curtain, the range hood is realized through the following technical scheme:
a range hood with a central air curtain comprises a smoke collecting hood and an air box device, wherein the smoke collecting hood is provided with a smoke inlet part and a smoke guide part positioned below the smoke inlet part, the top of the smoke inlet part is provided with a smoke outlet, the bottom of the smoke inlet part is provided with a smoke inlet area, the air box device is arranged at the top of the smoke collecting hood and is communicated with the smoke outlet, the range hood further comprises an air supply device, a vertical central air passage for dividing the smoke guide surface into two parts is convexly arranged on the smoke guide surface on the front surface of the smoke guide part, two opposite side walls of the central air passage are rotational flow surfaces for enabling air flow flowing through the central air passage to rotate, and the central air passage is provided with at least one row of exhaust holes which are vertically arranged and; the air supply device is arranged on the smoke collection cover, and an air supply outlet of the air supply device is connected with the central air passage and used for conveying air to the exhaust holes.
In some embodiments, the central air passage extends from the bottom of the smoke guide portion to the bottom surface of the smoke inlet portion and divides the smoke inlet area into two parts, the side wall of the central air passage or the rotational flow surface is an inclined surface or an arc surface extending from the front surface of the smoke guide portion to the direction of the exhaust hole, and the cross sectional area of the inclined surface or the arc surface in the horizontal direction is linearly increased from bottom to top.
In some embodiments, the arc surface is curved toward the inside of the central air passage or the outside of the side wall of the central air passage, and the arc length of the arc surface in any horizontal section is a quarter of an arc.
In some embodiments, a transition surface is arranged between two opposite side walls of the central air passage, the transition surface is arranged from bottom to top and inclines forwards, and at least one row of exhaust holes which are vertically arranged and emit air forwards are arranged on the transition surface.
In some embodiments, the transition surface is a forward and outward curved arc surface, and a row of the exhaust holes which are vertically arranged and are exhausted forward are arranged on the arc surface; or the transition surface is a plane, and the left side and the right side of the plane are respectively provided with a row of exhaust holes which are vertically arranged and are exhausted forwards.
In some embodiments, a distance L between a left edge of the planar-shaped transition surface and a center point of any one of the exhaust holes on the left side is less than 20mm, and a distance L between a right edge of the planar-shaped transition surface and a center point of any one of the exhaust holes on the right side is less than 20 mm.
In some embodiments, the exhaust fume collecting hood further comprises a ventilating duct, a mounting hole is formed in the top or the side wall of the exhaust fume collecting hood, the ventilating duct is arranged inside the exhaust fume collecting hood, an air inlet of the ventilating duct is communicated with the mounting hole, and the central air duct is communicated with the ventilating duct; the air supply device comprises an air supply fan, the air supply fan is installed in the installation hole, and an air supply outlet of the air supply fan faces towards the air inlet of the ventilation pipeline.
In some embodiments, the air supply device further includes an air inlet cover and a filter, the air inlet cover is provided with a plurality of air inlets through which outside air passes, the air inlet cover is disposed at the air inlet end of the mounting hole and is flush with the outer end face of the mounting hole, and the filter is disposed in the mounting hole and between the air supply fan and the air inlet cover.
In other embodiments, the exhaust hood further comprises ventilation ducts arranged inside the exhaust hood, mounting holes are respectively arranged on the left side and the right side of the top of the exhaust hood or on the two opposite side walls of the top of the exhaust hood, the air outlet end of one of the mounting holes is communicated with the central air duct through the ventilation duct, and the air outlet end of the other mounting hole is communicated with the central air duct through the ventilation duct; air supply arrangement's quantity is two, every air supply arrangement includes air supply fan, air supply fan installs in corresponding in the mounting hole and its air supply export orientation correspond air pipe's air intake.
In some embodiments, the central air flue has left air feed way and right air feed way independent each other, left side air feed way with the front of right air feed way is equipped with one row of vertical layout respectively and gives vent to anger forward the exhaust hole, just left side air feed way with lean on a left side ventilation pipe intercommunication, right side air feed way with lean on a right side ventilation pipe intercommunication.
Compared with the prior art, the invention at least comprises the following beneficial effects: the range hood disclosed by the invention has the advantages that the gas sprayed out of the central air passage can form the central air curtain, and under the combined action of the air box device, the central air curtain and the cyclone surface of the central air passage, a unique spiral upward air flow is formed, so that the oil smoke is prevented from diffusing and escaping, and the effects of high-efficiency smoke collection and rotary smoking are achieved.
Drawings
Fig. 1 is a schematic structural diagram of a range hood in embodiment 1 of the present invention;
fig. 2 is a bottom view of the range hood in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of the range hood in another angle in embodiment 1 of the present invention, in which a smoke collecting hood back plate is hidden;
fig. 4 is an exploded schematic view of a part of the structure of the range hood in embodiment 1 of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Example 1
As shown in fig. 1-2, the range hood with a central air curtain of the present embodiment includes a smoke collecting hood 1, a bellows device 2 and an air supply device 3, the smoke collecting hood 1 has a smoke inlet 11 and a smoke guide 12 located below the smoke inlet 11, the top of the smoke inlet 11 is provided with a smoke outlet, the bottom is provided with a smoke inlet area 111, a vertical central air duct 4 dividing the smoke guide 121 into two is convexly provided on the smoke guide 121 on the front surface of the smoke guide 12, two opposite side walls of the central air duct 4 are rotational flow surfaces 41 for rotating the air flow flowing through the central air duct, the central air duct 4 is provided with at least one row of exhaust holes 401 vertically arranged and exhausting air forward, and the air flow ejected from the exhaust holes 401 forms a central air curtain capable of driving peripheral air flow to flow. The air box device 2 is arranged at the top of the smoke collecting cover 1 and communicated with the smoke outlet, and is used for sucking smoke oil and forming upward axial suction on the cyclone gas. The air supply device 3 is arranged on the smoke collecting hood 1, and an air supply outlet and the central air passage 4 of the air supply device are used for conveying air to the exhaust holes 401, so that air flow sprayed out of the exhaust holes 401 forms a central air curtain.
When the range hood works, the air box device 2 and the air supply device 3 are started, the upward axial suction force generated by the air box device 2 drives external air flow and oil smoke to flow into the smoke inlet part 11 of the smoke collection cover 1 from the smoke inlet area 111, enter the air box device 2 through the smoke outlet, and finally are discharged out of a room from a smoke exhaust pipeline of the range hood. Air supply arrangement 3 takes the external gas into central air flue 4 so that exhaust hole 401 spouts gas, because gaseous viscous effect, form central wind curtain from exhaust hole 401 spun gas, not only can be different regions with the oil smoke cutting, can also drive peripheral air current and flow together and produce radial force, the air current forms the whirl gas under the mating action of whirl face 41, and produce the upwards air current of spiral under the cooperation of axial suction that makes progress at bellows device 2, thereby make the oil smoke upwards by the spin-suction gathering before the diffusion, prevent that the oil smoke from diffusing to escape, improve rotatory smoking effect.
The range hood with the central air curtain of the embodiment has the advantages that the central air curtain can be formed by the gas sprayed out of the exhaust holes 401 of the central air passage 4, and under the cooperative action of the air box device 2, the central air curtain and the cyclone surface 41 of the central air passage 4, the unique spiral upward air flow is formed, so that the oil smoke is prevented from diffusing and escaping, and the effects of high-efficiency smoke collection and rotary smoking are achieved.
Specifically, the smoke guide part 12 of the smoke collecting cover 1 is located at the rear side of the bottom surface of the smoke inlet 11 and the back surfaces of the smoke inlet 11 and the smoke guide part 12 are located at the same plane, so that the smoke inlet 11 and the smoke guide part 12 form a 7 shape, and the front side of the bottom surface of the smoke inlet 11 is used for preventing smoke from escaping upwards. The smoke inlet region 111 is disposed at the front side of the bottom surface of the smoke inlet portion 11 so that the spirally upward airflow flows into the interior of the smoke inlet portion 11 through the smoke inlet region 111. Preferably, the smoke inlet area 111 is formed by a plurality of smoke inlet holes 101, so that the smoke inlet area 111 can serve as an oil screen, on one hand, the oil-smoke separation effect can be achieved, on the other hand, the oil screen can be omitted, the assembly process is simplified, and the manufacturing cost is reduced.
Specifically, the bellows device 2 includes a box 21 and a fan assembly 22, the box 21 is disposed on the top of the smoke collecting hood 1 or the smoke inlet 11 and is communicated with the smoke outlet, and the fan assembly 22 is installed inside the box 21 and the air supply outlet thereof is communicated with the smoke exhaust pipe of the range hood. In the present embodiment, the fan assembly 22 is a volute fan assembly.
As shown in fig. 1-2, in this embodiment, the central air passage 4 is vertically disposed at the center of the smoke guiding surface 121 on the front side of the smoke guiding portion 12 and divides the smoke guiding surface 121 into the left smoke guiding surface 121 and the right smoke guiding surface 121 which are symmetrical to each other, and the central air passage 4 extends from the bottom of the smoke guiding portion 12 toward the bottom of the smoke inlet portion 11 and divides the smoke inlet area 111 into two parts, so that the left smoke guiding surface 121 and the left smoke inlet area 111 correspond to a pot on the left burner of the cooker, and the right smoke guiding surface 121 and the right smoke inlet area 111 correspond to a pot on the right burner of the cooker, so as to control the working state of each row of exhaust holes 401 of the central air passage 4 according to the specific use conditions of the left and right burners of the cooker, thereby ensuring the efficient rotary smoking effect, saving energy, and having stronger adaptability.
Specifically, the cross-sectional area of the central air passage 4 in the horizontal direction becomes linearly larger from bottom to top. The lateral wall or the whirl face 41 of central air flue 4 is the inclined plane or the arc surface that extend towards exhaust hole 401 direction by leading cigarette portion 12 openly, and inclined plane or arc surface are the linear grow from bottom to top at the cross-sectional area of horizontal direction to make left side lead cigarette face 121 and right lead cigarette face 121 all be the linear grow from bottom to top, so under the mating reaction of central air flue 4 lateral wall (be whirl face 41), make the tornado effect reinforcing that the air current formed, do benefit to the enhancement and inhale soon and gather together the oil smoke effect.
Preferably, the side wall or swirl surface 41 of the central air passage 4 is a circular arc surface that is curved toward the inside of the central air passage 4 or curved toward the outside of the side wall of the central air passage 4. More preferably, the side wall or the swirling surface 41 of the central air passage 4 of the present embodiment is an arc surface that is curved toward the inside of the central air passage 4, and the arc length of the arc surface at any horizontal section is a quarter of an arc, so as to ensure that the formed rotating airflow effect is optimal, and further ensure that the rotating smoking of the range hood is more efficient.
Specifically, a transition surface 42 is arranged between two opposite side walls of the central air passage 4, and the transition surface 42 is arranged from bottom to top in a forward inclining mode, so that the arc length of the variable-diameter arc surface on the section in the horizontal direction is favorably increased, and the gas turning rotating effect is favorably enhanced. At least one row of exhaust holes 401 which are vertically arranged and are exhausted towards the front are arranged on the transition surface 42 so as to cut the oil smoke into at least two areas.
Preferably, the transition surface 42 of this embodiment is a plane, and the left and right sides on the plane is equipped with one row of exhaust holes 401 of vertical arrangement and giving vent to anger forward respectively, and the gas that spouts from two rows of exhaust holes 401 forms two left and right sides central air curtains, can cut the oil smoke into three regions on the one hand, on the two hand drives peripheral gas flow under the adhesion effect to form rotatory air current with the cooperation of the circular-arc whirl face 41 of reducing, the whirl effect of gas from exhaust hole 401 can be accelerated to the three aspect, reinforcing spiral upward air current intensity. In other embodiments, the transition surface 42 may also be an arc surface that is curved forward and outward, and a row of exhaust holes 401 that are vertically arranged and exit forward are disposed on the arc surface.
More preferably, the distance L between the left edge of the planar transition surface 42 and the center point of any exhaust hole 401 close to the left is less than 20mm, and the distance L between the right edge of the planar transition surface 42 and the center point of any exhaust hole 401 close to the right is less than 20mm, so that the air flow ejected from the exhaust holes 401 can form a central air curtain, and simultaneously, the air flow on the side wall (i.e., the swirling surface 41) of the central air passage 4 can be effectively driven to flow together, and further, the formed spiral upward air flow effect is optimal.
As shown in fig. 3-4, further, the exhaust hood further comprises an air duct 6 disposed inside the exhaust fume collecting hood 1, mounting holes 112 are respectively disposed on the left and right sides or the two opposite side walls of the top of the exhaust fume collecting hood 1, wherein the air outlet end of one mounting hole 112 is communicated with the central air duct 4 through the air duct 6, and the air outlet end of the other mounting hole 112 is communicated with the central air duct 4 through the air duct 6; the number of the air supply devices 3 is two, each air supply device 3 comprises an air supply fan 31, the air supply fan 31 is installed in the corresponding installation hole 112, and an air supply outlet of the air supply fan faces to an air inlet of the corresponding ventilation pipeline 6.
In this embodiment, two mounting holes 112 are respectively disposed on the left and right sides of the top of the smoke collecting hood 1 and located on the left and right outer sides of the air box device 2, and the upper end face of each mounting hole 112 penetrates through the top face and the lower end face of the smoke collecting hood 1 and extends into the smoke collecting hood 1 so as to be connected with the air inlet of the ventilation duct 6. Each ventilation duct 6 comprises an air inlet section and an air outlet section which are communicated with each other, wherein the air inlet section is communicated with the lower end of the corresponding mounting hole 112, and the air outlet section is communicated with the central air passage 4.
Specifically, the center air duct 4 has a left air supply duct 43 and a right air supply duct 44 independent of each other, the left air supply duct 43 and the right air supply duct 44 are respectively provided with a row of exhaust holes 401 arranged vertically and exhausting air forward, and the left air supply duct 43 communicates with the air supply outlet of the left air supply fan 31 through the left ventilation duct 6, and the right air supply duct 44 communicates with the right air supply fan 31 through the right ventilation duct 6. From this, through dividing into left air supply way 43 and right air supply way 44 independent each other with central air flue 4, thereby make range hood have two central air curtains, and lean on left central air curtain by leaning on left air supply fan 31 control, lean on right central air curtain to control through the air supply fan 31 that leans on the right side, the user of being convenient for controls two air supply fan 31's operating condition according to combustor user state about the cooking utensils, it is higher to use the flexibility, do benefit to the high efficiency and hold together cigarette and rotatory oil absorption, avoid the energy extravagant.
In the present embodiment, the left air supply passage 43 is formed by the left side of the vertical center line of an air supply chamber (not shown) having an opening on one side thereof and the planar transition surface 42 provided inside the hood 1, and the right air supply passage 44 is formed by the right side of the vertical center line of the air supply chamber having an opening on one side thereof and the planar transition surface 42 provided inside the hood 1.
Further, each air supply device 3 further includes an air inlet cover 32, a plurality of air inlet holes for allowing external air to pass through are formed in the air inlet cover 32, the air inlet end of the mounting hole 112 is covered by the air inlet cover 32 and is flush with the outer end face of the mounting hole 112 (see fig. 4), so that by additionally arranging the air inlet cover 32, external impurities can be prevented from entering the mounting hole 112 and the air supply fan 31, the exhaust holes 401 are prevented from being blocked by the external impurities, and the use performance of the range hood is ensured. In the present embodiment, the outer end surface of the mounting hole 112 specifically refers to the end of the mounting hole 112 away from the inside of the smoke collecting hood 1.
Furthermore, each air supply device 3 further comprises a filter 6, and the filter 6 is installed in the installation hole 112 and located between the air supply fan 31 and the air inlet cover 32, and is used for filtering external impurities, so as to prevent the external impurities from polluting the air supply fan 31 and the central air passage 4 after the range hood works for a long time, and further prevent the exhaust holes 401 from being blocked. Preferably, the filter 6 is rectangular, and the top surface and the bottom surface of the filter 6 are both provided with a plurality of filter holes, so that double filtration can be formed, the filtering effect is improved, the air supply fan 31, the ventilation pipeline 6 and the central air flue 4 are prevented from being polluted, and the usability of the range hood is further improved.
Example 2
The present embodiment is different from embodiment 1 in the number of air blowing devices 3 and the structure of the ventilation duct 6. Specifically, the number of the air supply device 3 and the ventilation duct 6 is one, a mounting hole 112 is provided at the top or the side wall of the smoke collecting hood 1, and the air supply device 3 is mounted at the mounting hole 112. The ventilation pipeline 6 is arranged inside the smoke collecting hood 1, the air inlet of the ventilation pipeline is communicated with the mounting hole 112, the central air passage 4 is communicated with the ventilation pipeline 6, and therefore the condition of spraying gas of the left exhaust hole and the right exhaust hole 401 of the central air passage 4 can be controlled only by matching one air supply device 3 with one ventilation pipeline 6, and manufacturing cost reduction is facilitated.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A range hood with a central air curtain comprises a fume collecting hood (1) and a bellows device (2), the fume collecting hood (1) is provided with a fume inlet part (11) and a fume guide part (12) positioned below the fume inlet part (11), the top of the smoke inlet part (11) is provided with a smoke outlet, the bottom is provided with a smoke inlet area (111), the air box device (2) is arranged at the top of the smoke collecting cover (1) and is communicated with the smoke outlet, it is characterized by also comprising an air supply device (3), wherein a vertical central air passage (4) which divides the smoke guide surface (121) into two parts is convexly arranged on the smoke guide surface (121) on the front surface of the smoke guide part (12), two opposite side walls of the central air passage (4) are rotational flow surfaces (41) for rotating the air flow passing through the central air passage, the central air passage (4) is provided with at least one row of exhaust holes (401) which are vertically arranged and can exhaust air forwards; air supply arrangement (3) set up in on collection petticoat pipe (1) and its air supply export with central air flue (4), be used for right exhaust hole (401) delivered gas.
2. The range hood with the central air curtain according to claim 1, wherein the central air passage (4) extends from the bottom of the smoke guide part (12) to the bottom of the smoke inlet part (11) and divides the smoke inlet area (111) into two parts, the side wall of the central air passage (4) or the rotational flow surface (41) is an inclined surface or an arc surface extending from the front of the smoke guide part (12) to the exhaust hole (401), and the cross-sectional area of the inclined surface or the arc surface in the horizontal direction is linearly increased from bottom to top.
3. The range hood with the central air curtain as claimed in claim 2, wherein the arc surface is curved towards the inside of the central air flue (4) or the outer side of the side wall of the central air flue (4), and the arc length of the arc surface in any horizontal section is a quarter of an arc.
4. The range hood with the central air curtain as claimed in claim 2, wherein a transition surface (42) is arranged between two opposite side walls of the central air duct (4), the transition surface (42) is arranged from bottom to top and inclines forwards, and at least one row of exhaust holes (401) which are vertically arranged and emit air towards the front are arranged on the transition surface (42).
5. The range hood with the central air curtain as claimed in claim 4, wherein the transition surface (42) is a cambered surface which is bent forwards and outwards, and a row of the exhaust holes (401) which are vertically arranged and emit air forwards are arranged on the cambered surface; or the transition surface (42) is a plane, and the left side and the right side of the plane are respectively provided with a row of exhaust holes (401) which are vertically arranged and are exhausted forwards.
6. The range hood with the central air curtain as claimed in claim 5, wherein a distance L between a left edge of the planar transition surface (42) and a center point of any one of the exhaust holes (401) on the left side is less than 20mm, and a distance L between a right edge of the planar transition surface (42) and a center point of any one of the exhaust holes (401) on the right side is less than 20 mm.
7. The range hood with the central air curtain according to any one of claims 1 to 6, characterized by further comprising a ventilating duct (6), wherein the top or the side wall of the fume collecting hood (1) is provided with a mounting hole (112), the ventilating duct (6) is arranged inside the fume collecting hood (1) and the air inlet of the ventilating duct is communicated with the mounting hole (112), and the central air flue (4) is communicated with the ventilating duct (6); air supply arrangement (3) are including air supply fan (31), air supply fan (31) install in mounting hole (112) and its air supply export orientation the air intake of air pipe (6).
8. The range hood with the central air curtain as claimed in claim 7, wherein the air supply device (3) further comprises an air inlet cover (32) and a filter (33), the air inlet cover (32) is provided with a plurality of air inlet holes for passing outside air, the air inlet cover (32) is arranged at the air inlet end of the mounting hole (112) and is flush with the outer end face of the mounting hole (112), and the filter (33) is arranged in the mounting hole (112) and is located between the air supply fan (31) and the air inlet cover (32).
9. The range hood with the central air curtain according to any one of claims 1 to 6, further comprising ventilation ducts (6) arranged inside the smoke collecting hood (1), wherein mounting holes (112) are respectively arranged on the left side and the right side or on the two opposite side walls of the top of the smoke collecting hood (1), the air outlet end of one of the mounting holes (112) is communicated with the central air flue (4) through the ventilation duct (6), and the air outlet end of the other mounting hole (112) is communicated with the central air flue (4) through the ventilation duct (6); the quantity of air supply arrangement (3) is two, every air supply arrangement (3) are including air supply fan (31), air supply fan (31) install in corresponding in mounting hole (112) and its air supply export orientation correspond the air intake of air pipe (6).
10. The range hood with the central air curtain according to claim 9, wherein the central air passage (4) has a left air supply passage (43) and a right air supply passage (44) which are independent of each other, the front surfaces of the left air supply passage (43) and the right air supply passage (44) are respectively provided with a row of exhaust holes (401) which are vertically arranged and are used for exhausting air forwards, the left air supply passage (43) is communicated with the ventilation duct (6) close to the left, and the right air supply passage (44) is communicated with the ventilation duct (6) close to the right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420114.0A CN111981530A (en) | 2019-12-31 | 2019-12-31 | Range hood with central air curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420114.0A CN111981530A (en) | 2019-12-31 | 2019-12-31 | Range hood with central air curtain |
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| CN111981530A true CN111981530A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911420114.0A Pending CN111981530A (en) | 2019-12-31 | 2019-12-31 | Range hood with central air curtain |
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| CN204268537U (en) * | 2014-11-18 | 2015-04-15 | 宁波方太厨具有限公司 | A kind of range hood |
| WO2018157664A1 (en) * | 2017-02-28 | 2018-09-07 | Lien Fue Sang | Fume cyclonic-collection device, range hood, and kitchen fume-extracting and cooking equipment |
| CN212108549U (en) * | 2019-12-31 | 2020-12-08 | 华帝股份有限公司 | Range hood with central air curtain |
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2019
- 2019-12-31 CN CN201911420114.0A patent/CN111981530A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002013772A (en) * | 2000-06-21 | 2002-01-18 | Daikin Ind Ltd | Air supply and exhaust device |
| US20120152229A1 (en) * | 2010-12-15 | 2012-06-21 | National Taiwan University Of Science And Technology | Range hood capable of resisting draft |
| CN204268537U (en) * | 2014-11-18 | 2015-04-15 | 宁波方太厨具有限公司 | A kind of range hood |
| WO2018157664A1 (en) * | 2017-02-28 | 2018-09-07 | Lien Fue Sang | Fume cyclonic-collection device, range hood, and kitchen fume-extracting and cooking equipment |
| CN212108549U (en) * | 2019-12-31 | 2020-12-08 | 华帝股份有限公司 | Range hood with central air curtain |
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