CN108167906A - A kind of kitchen ventilator that can increase pressure differential - Google Patents
A kind of kitchen ventilator that can increase pressure differential Download PDFInfo
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- CN108167906A CN108167906A CN201810188650.1A CN201810188650A CN108167906A CN 108167906 A CN108167906 A CN 108167906A CN 201810188650 A CN201810188650 A CN 201810188650A CN 108167906 A CN108167906 A CN 108167906A
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- concentric tube
- pressure differential
- kitchen ventilator
- concentric
- eaves portion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Ventilation (AREA)
Abstract
A kind of kitchen ventilator that can increase pressure differential is provided with smoke machine main body and can generate the oil fume separator of centrifugal force separate soot particles, and oil fume separator transmission is assemblied in smoke machine body interior.Oil fume separator is provided with concentric tube, rotary shaft and the multiple eaves portion structures of a plurality of middle overlapping of axles, rotary shaft is fixedly connected respectively with one end of a plurality of concentric tube, respectively with being surrounded on the other end of concentric tube and being fixedly connected with corresponding concentric tube, rotary shaft is connect multiple eaves portion structures with the motor drive of smoke machine main body.The diameter by limiting concentric tube both ends of the kitchen ventilator and the distance of lower neighboring concentric pipe, it will be able to mention the pressure differential between internal and external environment, reach raising oil absorbing effect.The oil fume separator also has generates additional centrifugal force to soot gas, can effectively remove soot particles, be avoided that and contacted containing a large amount of soot particles gases with wind wheel, greatly improves the separating effect of soot particles and reduces the noise generated due to wind wheel accumulates oil stain.
Description
Technical field
The present invention relates to kitchen ventilator field, more particularly to a kind of kitchen ventilator that can increase pressure differential.
Background technology
Kitchen ventilator is also known as range hood, is a kind of kitchen appliance for purifying kitchen environment.Kitchen ventilator is mounted on kitchen range
Top can take the harmful oil smoke generated in the waste and cooking process of cooking stove burning rapidly away, and discharge is outdoor, subtracts
Of low pollution purifies air, and has gas defence, the effect of explosion-proof safety guarantee.
In the prior art, there are three types of form top suction type, side-suction type and lower-discharging types for range hood.Above-mentioned three kinds of range hoods
Only relying on wind wheel rotation makes to generate negative pressure inside range hood, thus the gas range hood internal flow of external environment, still
It is internal small with the pressure differential of external environment, cause oil suction efficiency low.
Therefore, in view of the shortcomings of the prior art, providing a kind of kitchen ventilator that can increase pressure differential to solve the prior art not
Foot is very necessary.
Invention content
A kind of oil smoke that can increase pressure differential is provided it is an object of the invention to avoid the deficiencies in the prior art part
Machine.The kitchen ventilator that pressure differential can be increased improves inside oil machine and the pressure differential of external environment, so as to improve oil absorbing effect.
The above-mentioned purpose of the present invention is realized by following technological means.
A kind of kitchen ventilator that can increase pressure differential is provided, be provided with smoke machine main body and centrifugal force separate oil smoke grain can be generated
The oil fume separator of son, oil fume separator transmission are assemblied in smoke machine body interior.
The oil fume separator is provided with concentric tube, rotary shaft and the multiple eaves portion structures of a plurality of middle overlapping of axles, rotary shaft
Be fixedly connected respectively with one end of a plurality of concentric tube, multiple eaves portion structures be in around set and be fixedly installed in it is corresponding with one heart
It the other end of pipe and is fixedly connected with corresponding concentric tube, rotary shaft is connect with the motor drive of smoke machine main body.
The diameter of one end of same concentric tube is defined as D1, the diameter of the other end is defined as D2, and D2≤D1。
Further, 1.4D2≤D1。
By the end outer wall of one end of same concentric tube to the minimum range of concentric pipe outer wall adjacent and to central axis direction
It is defined as E1, the minimum range of the end outer wall of the other end of concentric tube to concentric pipe outer wall adjacent and to central axis direction is determined
Justice is E2, E2≥0.4E1。
Preferably, above-mentioned concentric tube is the line segment that is made of multistage broken line around concentric tube formed by axis one week, with one heart
For vortex position occurs for the position that the adjacent two lines section of inside pipe wall intersects.
The outside concentric tube of therefrom axis is defined as the 1st concentric tube successively ..., the i-th concentric tube ..., (n-1)th
Concentric tube, the n-th concentric tube, and 2≤i≤n and n are positive integer.
The height of 1st concentric tube is H1..., the height of the i-th concentric tube is Hi..., the height of the (n-1)th concentric tube
It spends for Hn-1, the height of the n-th concentric tube is Hn, H1Value it is maximum, HnValue it is minimum.
Preferably, above-mentioned 1.1Hn≤Hi≤10Hn, and 0.5Hi-1≤Hi≤3Hi-1。
Preferably, the height H of above-mentioned 1st concentric tube1Not more than 1m.
Preferably, above-mentioned eaves portion structure setting has multiple through-holes.
Preferably, above-mentioned concentric tube is provided with disturbing flow device, and disturbing flow device is seamless around the one end for being connected to concentric tube
End.
Lower section is defined as towards the side on ground when kitchen ventilator is installed, the oil fume separator is additionally provided with vortex
Device group, vortex generating means group are fixedly installed in the outer surface of concentric tube and are surrounded on the connection of eaves portion structure and concentric tube
Place, vortex generating means group and the upper surface for being installed on eaves portion structure.
Each vortex generating means group occurs sub-device by one or more vortex of the same eaves portion structure in place and forms.
Preferably, above-mentioned vortex generating means group is provided with m, and m is the arbitrary positive integer more than 0, and m vortex fills
Group is put to be fixedly installed in the outer surface of concentric tube respectively and be surrounded on the junction of eaves portion structure and concentric tube.
Preferably, the other end of above-mentioned concentric tube is at least fixedly connected there are one eaves portion structure.
Preferably, above-mentioned smoke machine main body is provided with shell, exhausting component and oil collector sump tank, and oil fume separator rotation is installed on
The inside of shell, in the inside of shell and positioned at the top of oil fume separator, oil collector sump tank is assemblied in exhausting component fixing assembling
The bottom of shell.
Preferably, above-mentioned shell be provided with multiple housing inlets and with the matched annular lamina of multiple housing inlets, ring
Shape piece be fixedly mounted or be integrally connected to the corresponding inner surface of shell and with positioned at the edge of housing inlet, annular lamina with it is outer
Shell air inlet corresponds.
Preferably, above-mentioned exhausting component is provided with wind turbine, wind wheel and spiral case, and wind turbine is assemblied in inside spiral case, wind wheel and wind
Machine is sequentially connected, and the air inlet that spiral case is fixedly installed in smoke machine body interior spiral case is communicated with the gas outlet above concentric tube, snail
The gas outlet of shell is communicated with the gas outlet of smoke machine main body.
Preferably, above-mentioned shell is spherical housing.
A kind of kitchen ventilator that can increase pressure differential of the present invention is provided with smoke machine main body and can generate centrifugal force separate oil
The oil fume separator of smoke particle, oil fume separator transmission are assemblied in smoke machine body interior.Oil fume separator is provided with a plurality of axis
Concentric tube, rotary shaft and the multiple eaves portion structures of coincidence, rotary shaft is fixedly connected respectively with one end of a plurality of concentric tube, multiple
Eaves portion structure is respectively with being surrounded on the other end of concentric tube and being fixedly connected with corresponding concentric tube, rotary shaft and smoke machine main body
Motor drive connects.The diameter of one end of same concentric tube is defined as D1, the diameter of the other end is defined as D2, and D2≤D1.It should
The diameter by limiting concentric tube both ends of the kitchen ventilator of pressure differential and the distance of lower neighboring concentric pipe can be increased, it will be able to carry
Pressure differential between internal and external environment, reaches raising oil absorbing effect.This can increase the oil smoke of the kitchen ventilator of pressure differential
Separator also has generates additional centrifugal force to soot gas, can effectively remove soot particles, be avoided that containing a large amount of soot particles
Gas is contacted with wind wheel, is greatly improved the separating effect of soot particles and is reduced the noise generated due to wind wheel accumulates oil stain.
Description of the drawings
Using attached drawing, the present invention is further illustrated, but the content in attached drawing does not form any limit to the present invention
System.
Fig. 1 is a kind of structure diagram of kitchen ventilator embodiment 1 that can increase pressure differential of the present invention.
Fig. 2 is the oil fume separator structure diagram in Fig. 1.
Fig. 3 is D1And D2Between relation schematic diagram.
Fig. 4 is E1And E2Between relation schematic diagram.
Fig. 5 is the high-level schematic of concentric tube.
Fig. 6 is the shell of the present invention and the appearance diagram of oil collector sump tank.
Fig. 7 is the oil smoke body gas flow simulating figure of the present invention.
Fig. 8 is oil smoke separation assembly sectional stereogram.
In Fig. 1 to 8, include：
Oil fume separator 1, concentric tube 11, disturbing flow device 111, rotary shaft 12, eaves portion structure 13, through-hole 131, vortex occur
Device group 14, vortex occur position 15,
Shell 2, housing inlet 21, annular lamina 22, oil collector sump tank 3, motor 4 and exhausting component 5.
Specific embodiment
Technical scheme of the present invention is described further with the following Examples.
Embodiment 1.
A kind of kitchen ventilator that can increase pressure differential as shown in Figures 1 to 6, is provided with smoke machine main body and can generate centrifugal force
1 oil fume separator 1 of the oil fume separator transmission of separation soot particles is assemblied in smoke machine body interior.Oil fume separator 1 is provided with
Concentric tube 11, rotary shaft 12 and the multiple eaves portion structures 13 of a plurality of middle overlapping of axles, rotary shaft 12 respectively with a plurality of concentric tube 11
One end is fixedly connected, multiple eaves portion structures 13 be in around set and be fixedly installed in corresponding concentric tube 11 the other end and with
Corresponding concentric tube is fixedly connected, and rotary shaft 12 and the motor 4 of smoke machine main body are sequentially connected.
The diameter of one end of same concentric tube 11 is defined as D1, the diameter of the other end is defined as D2, D1And D2Between pass
It is preferred 1.4D2≤D1, D of the invention1And D2Between relationship may be D2≤D1。
D1And D2Between relationship, according to according to Venturi effect it is found that the bigger flow velocity of area that flows through of fluid is smaller, i.e.,
The speed of one end of gas concentric pipe 11 is more than the other end speed of concentric tube 11.Again according to Bernoulli's theorem it is found that gas
Speed gets over that high pressure is smaller, therefore the end pressure that concentric tube 11 is connect with exhausting component 5 is big, and the air inlet of concentric tube 11
Pressure is small, so as to increase the pressure differential of the air inlet of concentric tube 11 and external environment, from soot gas is promoted to enter, improves suction
Oily effect.
By the end outer wall of one end of same concentric tube 11 to the minimum of 11 outer wall of concentric tube adjacent and to central axis direction
Distance definition is E1, by the end outer wall of the other end of concentric tube 11 to it is adjacent and to central axis direction 11 outer wall of concentric tube most
Small distance is defined as E2, E2≥0.4E1。
Because E2The too small gas that can reduce enters area inside concentric tube 11, reduces gas and enters oil fume separator
The efficiency of 1 air inlet.
Concentric tube 11 is the line segment that is made of multistage broken line around concentric tube 11,11 inner wall of concentric tube formed by axis one week
The position intersected of adjacent two lines section position 15 occurs for vortex, such as Fig. 8.The effect of 11 shape of concentric tube of the present invention is can
So that soot gas generates vortex in 11 inner wall of concentric tube, the efficiency of removing oil smoke is improved.
The outside concentric tube 11 of therefrom axis is defined as the 1st concentric tube successively ..., the i-th concentric tube ..., the
N-1 concentric tubes, the n-th concentric tube, and 2≤i≤n and n are positive integer.
The height of 1st concentric tube is H1..., the height of the i-th concentric tube is Hi..., the height of the (n-1)th concentric tube
It spends for Hn-1, the height of the n-th concentric tube is Hn, H1Value it is maximum, HnValue it is minimum.1.1Hn≤Hi≤10Hn, and 0.5Hi-1≤Hi
≤3Hi-1.The height H of 1st concentric tube1Not more than 1m.
Eaves portion structure 13 is provided with multiple through-holes 131, and the effect of through-hole 131 is can be when oil fume separator 1 rotates, will
The elaioleucite of bulky grain is pooled, is detached from inside oil fume separator 1, greatly improves the separating effect of soot particles.
Concentric tube 11 is provided with disturbing flow device 111, and disturbing flow device 111 is seamless around the one end for being connected to concentric tube 11
End.The effect of disturbing flow device 111 is that soot gas is made to generate vortex, so as to improve the ability of de-oiling.
Lower section is defined as towards the side on ground when kitchen ventilator is installed, the oil fume separator 1 is additionally provided with vortex hair
Generating apparatus group 14, vortex generating means group 14 be fixedly installed in the outer surface of concentric tube 11 and be surrounded on eaves portion structure 13 with it is concentric
The junction of pipe 11, vortex generating means group 14 and the upper surface for being installed on eaves portion structure 13.
By one or more vortex of the same eaves portion structure 13 in place sub-device occurs for each vortex generating means group 14
Composition.
Vortex generating means group 14 is provided with m, and m is the arbitrary positive integer more than 0, and m vortex generating means group 14 is divided
It is not fixedly installed in the outer surface of concentric tube 11 and is surrounded on the junction of eaves portion structure 13 and concentric tube 11.
The concentric tube 11 of the n=3 of the present embodiment, i.e. the present embodiment are provided with 3.The present embodiment m=2, i.e. vortex occur
Device group 14 is set as 2, and one is set to the 3rd concentric tube, another is set to the 2nd concentric tube.The concentric tube 11 of the present invention
Number can be arbitrary positive integer, and it is arbitrarily just whole that vortex generating means group 14 can be less than or equal to 11 number of concentric tube
Number.
The other end of concentric tube 11 is at least fixedly connected there are one eaves portion structure 13.The other end of the concentric tube 11 of the present invention
Can at least be fixedly connected there are one eaves portion structure 13, can also the other end of concentric tube 11 be only fixedly connected with an eaves portion structure
13.The other end of 1st concentric tube of the present embodiment connects two eaves portion structures 13.
Two eaves portion structures 13 effect of 1st concentric tube connection is the reduction of the sky between the 1st concentric tube and the 2nd concentric tube
Between volume, so as to reduce the area of the air inlet of the 2nd concentric tube, improve gas admission velocity, increase by 11 inside of concentric tube with
The pressure differential of exterior space.
Smoke machine main body is provided with shell 2, exhausting component 5 and oil collector sump tank 3, and the rotation of oil fume separator 1 is installed on shell 2
Inside, in the inside of shell 2 and positioned at the top of oil fume separator 1, oil collector sump tank 3 is assemblied in outer 5 fixing assembling of exhausting component
The bottom of shell 2.Shell 2 be provided with multiple housing inlets 21 and with multiple 21 matched annular laminas 22 of housing inlet, it is cyclic annular
22 integrally connected shell of piece, 2 corresponding inner surface and with positioned at the edge of housing inlet 21, annular lamina 22 and housing inlet
21 correspond, and annular lamina 22 of the invention can also be fixedly installed in shell, depending on specific embodiment is with performance.
The effect of annular lamina 22 is that soot gas is made to generate vortex, while prevent soot particles from throwing away again when entering shell 2
During oil fume separator 1 exterior space is thrown away from the housing inlet 21 of shell 2.
Exhausting component 5 is provided with wind turbine, wind wheel and spiral case, and wind turbine is assemblied in inside spiral case, and wind wheel is sequentially connected with wind turbine,
The air inlet that spiral case is fixedly installed in smoke machine body interior spiral case is communicated with the gas outlet of 11 top of concentric tube, the gas outlet of spiral case
It is communicated with the gas outlet of smoke machine main body.The shell 2 of the present invention is spherical housing 2.
The operation principle of the kitchen ventilator is：Kitchen ventilator is opened, motor 4 drives oil fume separator 1, the wind wheel of exhausting component 5
It rotating simultaneously, soot particles are by seven layer separations inside kitchen ventilator, and most almost the gas of cleaning is discharged again through gas outlet finally,
As shown in Figure 7.This seven layer separation is specific as follows：
First layer separation, inertial separation：Oil smoke enters via the housing inlet 21 of shell 2 inside smoke machine, and oil smoke enters
Enter annular lamina 22 after housing inlet 21, because of 2 inside of shell and 21 area of pressure differential and housing inlet of external environment
Cataclysm, air velocity can accelerate, and moment of inertia also relatively increases.And oil smoke can form very thin around annular lamina 22
Boundary layer, and because the housing inlet 21 and annular lamina 22 of shell 2 are in angle, oil smoke is forced to flow downward along annular lamina 22
Just up flow into oil fume separator 1 afterwards, thus heavier oil opened in downward inertia motion with crude oil plume field point it is past
The oil collector sump tank 3 in 2 bottom of shell is collected in lower movement, realizes first time inertial separation.
Second layer separation, cyclonic separation：Soot particles by the first layer separation are in the direction of annular lamina 22 by lower turn
Flowing in further occur flow field separation, soot particles flow field detach under cause unsteady flow field, be further formed vortex.
Flow field or vortex can interact influence with neighbouring flow field or vortex, and the flow field for not stopping spinning is formed in annular lamina 22, this
When rotating vortex reach maximum vorticity.The lighter oil smoke of remaining part can not be parked in the rotating vortex accumulation of annular lamina 22, when
When running up to constant weight, flow field branch is unable to hold out the weight of oil droplet, will fall downwards or flow to oil collector sump tank along annular lamina 22
3。
Third layer separation, centrifugal force separate：Eaves portion structure 13 follows the rotation of concentric tube 11 to form centrifugal force, centrifugal force and wind
The attraction interaction of wheel.After second detaches, the lighter oil smoke of remaining part is first contacted when entering concentric tube 11
Outermost end to eaves portion structure 13 enters back into concentric tube 11, and the centrifugal force of 13 outermost end of eaves portion structure can be segment fluid flow or oil
Smoke particle is taken away or stops into 11 inside of concentric tube and move outward, then thrown away with higher tangential velocity, is thrown out of particle
It can fall in annular lamina 22, oil collector sump tank 3 is flow to finally along annular lamina 22.
4th layer separation, inertial separation and centrifugal force separate：After third layer separation, the oil smoke of remaining lighter weight is same
When acted on by centrifugal force and attraction, but opposite attraction is more than centrifugal force.A portion of these oil smoke can be through
It crosses through-hole 131 to flow to adjacent eaves portion structure 13, because effect of inertia and other oil smoke or soot particles pool larger oil
Smoke particle flow down, but because centrifugal force acts on, soot particles are simultaneously flowed with being thrown away compared with high tangential velocity finally along annular lamina 22
Move oil collector sump tank 3.
Layer 5 detaches, the cyclone centrifugal force of concentric tube 11 and the secondary generation that is vortexed：11 inner wall of concentric tube rotates to form gas
Rotation, concentric tube 11 be low-pressure area under the action of the centrifugal force, fluids within pipes or particle etc. are moved toward duct wall, and tube wall forms height
Tangential velocity, part oil smoke are blocked flowing up.It is vortexed, does not stop in addition, remaining oil smoke can be formed in vortex generator
Spinning captures oil smoke and oil smoke is not allowed to flee from pipeline.After attraction and centrifugal force remove, do not stop spinning secondary vortex flow and
The oil smoke that high tangential motion is carried out in tube wall can be collected because gravity flows downward to oil collector sump tank 3 along inner tubal wall.
Layer 6 detaches, and disturbing flow device 111 detaches：The disturbing flow device 111 of 11 one end of concentric tube generates remaining oil smoke
Flow field separation occurs, is detached by flow field, part oil smoke because stopping during the unstability in flow field not toward flowing in length and spin
The vortex turned captures oil smoke.
Layer 7 detaches, wind wheel centrifugal force separate：After the first six layer separation, be left a small amount of very light soot particles because
Pressure differential and the wind wheel for sucking exhausting component 5, the wind wheel of rotation form centrifugal force and remaining a small amount of soot particles are thrown to wind turbine
Inner wall on, last almost clean gas is discharged external through gas outlet.
This can increase the diameter by limiting 11 both ends of concentric tube of the kitchen ventilator of pressure differential and lower neighboring concentric pipe 11
Distance, it will be able to mention the pressure differential between internal and external environment, reach raising oil absorbing effect.This can increase pressure differential
The oil fume separator 1 of kitchen ventilator also have additional centrifugal force generated to soot gas, can effectively remove soot particles, be avoided that
It contacts, greatly improve the separating effect of soot particles and reduces due to wind wheel accumulates oil stain with wind wheel containing a large amount of soot particles gases
The noise of generation.
Embodiment 2.
A kind of kitchen ventilator that can increase pressure differential, other features are same as Example 1, the difference lies in：This implementation
The n=4 of example, the i.e. concentric tube 11 of the present embodiment are provided with 4.The present embodiment m=2, i.e. vortex generating means group 14 are set as 2
A, one is set to the 4th concentric tube, another is set to the 3rd concentric tube.The concentric tube 11 of the present embodiment and eaves portion structure simultaneously
13 correspond.
This can increase the kitchen ventilator of pressure differential compared with Example 1, increase a concentric tube 11, that is, increase
Spatial volume of the oil fume separator 1 inside shell 2 so as to reduce the area of 11 air inlet of concentric tube, improves gas and enters
Speed increases by 11 inside of concentric tube and the pressure differential of exterior space, so as to improve the rate of departure of soot particles.
Embodiment 3.
A kind of kitchen ventilator that can increase pressure differential, other features are same as Example 1, the difference lies in：This implementation
The concentric tube 11 of example is corresponded with eaves portion structure 13.
The present embodiment compared with Example 1, may mitigate the overall weight of oil fume separator 1, so as to the load-bearing of kitchen ventilator
It is required that reducing the load of parts, the kitchen ventilator service life is extended.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of range, although being explained in detail with reference to preferred embodiment to the present invention, those of ordinary skill in the art should manage
Solution, can be modified or replaced equivalently technical solution of the present invention, without departing from the essence and model of technical solution of the present invention
It encloses.
Claims (10)
1. a kind of kitchen ventilator that can increase pressure differential, it is characterised in that：It is provided with smoke machine main body and centrifugal force separate can be generated
The oil fume separator of soot particles, oil fume separator transmission are assemblied in smoke machine body interior；
The oil fume separator is provided with concentric tube, rotary shaft and the multiple eaves portion structures of a plurality of middle overlapping of axles, rotary shaft difference
With being fixedly connected for one end of a plurality of concentric tube, multiple eaves portion structures are in around setting and are fixedly installed in corresponding concentric tube
It the other end and is fixedly connected with corresponding concentric tube, rotary shaft is connect with the motor drive of smoke machine main body；
The diameter of one end of same concentric tube is defined as D1, the diameter of the other end is defined as D2, and D2≤D1。
2. a kind of kitchen ventilator that can increase pressure differential according to claim 1, it is characterised in that：The 1.4D2≤D1。
3. a kind of kitchen ventilator that can increase pressure differential according to claim 2, it is characterised in that：By same concentric tube
The minimum range of the end outer wall of one end to concentric pipe outer wall adjacent and to central axis direction is defined as E1, by the another of concentric tube
The minimum range of the end outer wall at end to concentric pipe outer wall adjacent and to central axis direction is defined as E2, E2≥0.4E1。
4. a kind of kitchen ventilator that can increase pressure differential according to claim 3, it is characterised in that：The concentric tube is served as reasons
The line segment of multistage broken line composition is around concentric tube formed by axis one week, position that the adjacent two lines section of concentric inside pipe wall intersects
Position occurs for vortex.
5. a kind of kitchen ventilator that can increase pressure differential according to claim 4, it is characterised in that：Therefrom axis is outside
Concentric tube is defined as the 1st concentric tube successively ..., the i-th concentric tube ..., the (n-1)th concentric tube, the n-th concentric tube, and 2≤
I≤n and n are positive integer；
The height of 1st concentric tube is H1..., the height of the i-th concentric tube is Hi..., the height of the (n-1)th concentric tube is
Hn-1, the height of the n-th concentric tube is Hn, H1Value it is maximum, HnValue it is minimum；
The 1.1Hn≤Hi≤10Hn, and 0.5Hi-1≤Hi≤3Hi-1；
The height H of 1st concentric tube1Not more than 1m.
6. a kind of kitchen ventilator that can increase pressure differential according to claim 5, it is characterised in that：The eaves portion structure is set
It is equipped with multiple through-holes；
The concentric tube is provided with disturbing flow device, and disturbing flow device is seamless around the end of the one end for being connected to concentric tube.
7. a kind of kitchen ventilator that can increase pressure differential according to claim 6, it is characterised in that：When kitchen ventilator is installed
Lower section is defined as towards the side on ground, the oil fume separator is additionally provided with vortex generating means group, vortex generating means group
It is fixedly installed in the outer surface of concentric tube and is surrounded on the junction of eaves portion structure and concentric tube, vortex generating means group is simultaneously installed
In the upper surface of eaves portion structure；
Each vortex generating means group occurs sub-device by one or more vortex of the same eaves portion structure in place and forms.
8. a kind of kitchen ventilator that can increase pressure differential according to claim 7, it is characterised in that：The vortex fills
It puts group and is provided with m, m is the arbitrary positive integer more than 0, and m vortex generating means group is fixedly installed in the outer of concentric tube respectively
Surface and the junction for being surrounded on eaves portion structure and concentric tube.
9. a kind of kitchen ventilator that can increase pressure differential according to claim 8, it is characterised in that：The concentric tube it is another
One end is at least fixedly connected there are one eaves portion structure.
10. a kind of kitchen ventilator that can increase pressure differential according to claim 1 to 9 any one, it is characterised in that：Institute
It states smoke machine main body and is provided with shell, exhausting component and oil collector sump tank, oil fume separator rotates the inside for being installed on shell, exhausting group
For part fixing assembling in the inside of shell and positioned at the top of oil fume separator, oil collector sump tank is assemblied in the bottom of shell；
The shell be provided with multiple housing inlets and with the matched annular lamina of multiple housing inlets, annular lamina be fixedly mounted
Or be integrally connected to the corresponding inner surface of shell and with positioned at the edge of housing inlet, annular lamina with housing inlet one by one
It is corresponding；
The exhausting component is provided with wind turbine, wind wheel and spiral case, and wind turbine is assemblied in inside spiral case, and wind wheel is sequentially connected with wind turbine,
The air inlet that spiral case is fixedly installed in smoke machine body interior spiral case is communicated with the gas outlet above concentric tube, the gas outlet of spiral case with
The gas outlet of smoke machine main body communicates；
The shell is spherical housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188650.1A CN108167906B (en) | 2018-03-07 | 2018-03-07 | Range hood capable of increasing pressure difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188650.1A CN108167906B (en) | 2018-03-07 | 2018-03-07 | Range hood capable of increasing pressure difference |
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| Publication Number | Publication Date |
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| CN108167906A true CN108167906A (en) | 2018-06-15 |
| CN108167906B CN108167906B (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810188650.1A Active CN108167906B (en) | 2018-03-07 | 2018-03-07 | Range hood capable of increasing pressure difference |
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| CN2348289Y (en) * | 1998-10-28 | 1999-11-10 | 卞应元 | Cooking fume collecting air exhauster |
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| GB2210448A (en) * | 1987-09-30 | 1989-06-07 | Tiong Ee Ong | Cooker hood with oil extraction |
| US5395410A (en) * | 1993-12-21 | 1995-03-07 | Jang; Sun-Sing | Fume exhauster |
| CN2348289Y (en) * | 1998-10-28 | 1999-11-10 | 卞应元 | Cooking fume collecting air exhauster |
| CN205842814U (en) * | 2016-07-14 | 2016-12-28 | 黄震 | A kind of smoke exhaust ventilator reducing environmental pollution |
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| CN108167906B (en) | 2023-01-03 |
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