CN108240355A - A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case - Google Patents
A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case Download PDFInfo
- Publication number
- CN108240355A CN108240355A CN201810127346.6A CN201810127346A CN108240355A CN 108240355 A CN108240355 A CN 108240355A CN 201810127346 A CN201810127346 A CN 201810127346A CN 108240355 A CN108240355 A CN 108240355A
- Authority
- CN
- China
- Prior art keywords
- spiral case
- surge bunker
- turbine
- surge
- bunker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241000237858 Gastropoda Species 0.000 claims abstract description 10
- 241000273930 Brevoortia tyrannus Species 0.000 claims description 53
- 230000003139 buffering effect Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010411 cooking Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
Abstract
This application involves a kind of spiral case with surge bunker and the kitchen ventilators comprising the spiral case.Spiral case includes snail chamber, and snail chamber is connected with air outlet, and two sides of spiral case are respectively equipped with surge bunker.Surge bunker can include the first surge bunker and the second surge bunker, and the first surge bunker and the second surge bunker differ in size, the outer surface of the first surge bunker and the prominent spiral case of the second surge bunker.By the setting of surge bunker in the application, effectively increase the axial dimension of spiral case so that spiral case becomes one while the mixing spiral case including axial volute and radial direction spiral case, can effectively buffer gas flow, reduce noise, increase air quantity.
Description
Technical field
This application involves a kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case, suitable for the technology of kitchen ventilator
Field.
Background technology
Range hood is a kind of kitchen appliance for purifying kitchen environment.With the increasingly raising of people's quality of life, oil suction
Smoke machine has become the essential cooking apparatus of Modern Family.It is typically mounted on above kitchen range, cooking stove can be burnt useless
The oil smoke generated in object and cooking process is taken away rapidly and discharges outdoor, reduces indoor pollution, purifies air, and has gas defence, prevents
Quick-fried safety guarantee effect.It would generally occur the oil smoke generated in cooking process can not be taken out completely in existing range hood
The problem of walking leads to the taste for still having oil smoke within doors.One of this phenomenon is generated the reason is that the suction effect of range hood
It is bad.It is exactly the velocity of rotation of the power of motor and turbine that increase range hood to solve the problems, such as this most common method, so as to
Increase suction effect.But the problem of bringing therewith is that noise increases caused by the increase of secondary speed, affects oil suction
The user experience of smoke machine.Therefore, how to increase the pumping efficiency of range hood as much as possible, while oil suction can be reduced again
The noise of smoke machine becomes the technical issues of this field is badly in need of solving.
Meanwhile the air duct of spiral case is typically all the air duct smoothed out in the prior art, flow substantially constant, noise are larger.
The blade of turbine is typically all the arc structure of same shape in the prior art, circumferentially spaced arrangement.So as in adjacent blades
Between there are gap, so that air-flow is made to be flowed from gap.
Invention content
The application provides a kind of spiral case with surge bunker and comprising the snail to overcome drawbacks described above of the prior art
The kitchen ventilator of shell, can not only increase the pressure and suction force of turbine assembly, but also can reduce making an uproar when kitchen ventilator works
Sound.
This application involves a kind of spiral cases with surge bunker, and including snail chamber, the snail chamber is connected with air outlet, the spiral case
Two sides respectively be equipped with surge bunker.
Preferably, the surge bunker includes the first surge bunker and the second surge bunker, first surge bunker and described second
Surge bunker differs in size, and first surge bunker and second surge bunker protrude the outer surface of the spiral case.
Preferably, on same side, first surge bunker and second surge bunker are circumferentially positioned opposite；Not
On ipsilateral, two the first surge bunkers are correspondingly arranged, and two the second surge bunkers are also correspondingly arranged.
Preferably, the height of the first surge bunker and the second surge bunker is 8-12mm.
The second aspect of the application is related to a kind of range hood, and including shell, the shell is internally provided with turbine assembly,
The turbine assembly includes spiral case and turbine, and spiral case is the spiral case as described above for carrying surge bunker.Preferably, the turbine is
Turbine with supercharging fin.
By the setting of surge bunker in the application, the axial dimension of spiral case is effectively increased so that spiral case becomes one
Mixing spiral case a while including axial volute and radial direction spiral case, can effectively buffer gas flow, reduce noise, increase air quantity.
The secondary booster of turbo blade can be realized by being pressurized fin by setting in the application, pass through the second blade first
Supercharging fin is pressurized air-flow, is then pressurized again by the body part of the second blade and the first blade, experiment knot
Fruit shows that the pressure of turbine and suction force can increase 20% or so.In addition, by the way that the inner side edge for being pressurized fin is set as wave
Shape wave or zigzag, can effectively reduce noise during turbine rotation at the effect of can making it have turbulator.
Description of the drawings
Fig. 1 shows the stereoscopic schematic diagram of the range hood according to the application.
Fig. 2 shows the front perspective view of turbine assembly.
Fig. 3 shows the rear perspective view of turbine assembly.
Fig. 4 shows the front perspective view of the another embodiment of turbine.
Fig. 5 shows the rear perspective view of the another embodiment of turbine.
Fig. 6 shows the schematic diagram of the second blade of the another embodiment of turbine.
Fig. 7 shows the front perspective view of the spiral case with surge bunker according to the application.
Fig. 8 shows the rear perspective view of the spiral case with surge bunker according to the application.
Fig. 9 shows the side view of the spiral case with surge bunker according to the application.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.Direction term in the application, such as " all around ", " outer interior up and down " etc. are for
The convenience of description does not form the restriction to protection domain.Those skilled in the art will know that the simple replacement between above-mentioned direction
Without departing from the protection domain of the application.
As shown in Figure 1, the stereoscopic schematic diagram which show the range hood according to the application.As shown in the figure, fume-exhausting
Machine includes shell 1, operation bench 2, deflector 3 and receives oil box 4, and shell 1 is internally provided with turbine assembly.Deflector 3 is arranged on outer
The lower part of shell, the outside of deflector 3 are also provided with guard 5.
As shown in Figures 2 and 3, wherein respectively illustrating the front perspective view and rear perspective view of turbine assembly.Turbine assembly
Top be equipped with air outlet 6, air outlet is connected with discharge flue, by oil smoke discharge kitchen ventilator outside.Turbine assembly includes
Plate 12 in spiral case 11, the turbine 10 mutually assembled and turbine, is also provided with air-ducting ring 13 between spiral case 11 and turbine 10.Wind-guiding
Circle is in addition to that can also have noise reduction, vortex is prevented to generate and other effects other than wind-guiding.The centre of plate 12 is equipped with axis in turbine
Hole, the motor shaft of electric rotating machine pass through axis hole, and electric rotating machine is fixed on spiral case 11, and plate 12 passes through electricity in turbine 10 and turbine
Arbor is fixed on electric rotating machine.Preferably, as shown in figure 3, support element 14 can also be set at the back side of turbine 10, by whirlpool
Wheel is supported on spiral case.As shown in Figures 2 and 3, spiral case therein is conventional shape, i.e., the air duct of entire spiral case is all smooth-going,
Air-flow is comparatively stablized inside spiral case.
As Figure 7-9, which show the front perspective views and backsight of the spiral case with surge bunker according to the application
Stereogram.As shown in the figure, spiral case includes snail chamber 113, snail chamber 113 is connected with air outlet, and two sides of spiral case are respectively equipped with
Surge bunker.As Figure 7-9, surge bunker includes the first surge bunker 111 and the second surge bunker 112, the first surge bunker 111 and second
Surge bunker 112 differs in size, the outer surface of the first surge bunker 111 and the prominent spiral case of the second surge bunker 112.Preferably, exist
On same side, the first surge bunker 111 and the second surge bunker 112 can be circumferentially positioned opposite；On different sides, two
One surge bunker is correspondingly arranged, and two the second surge bunkers are also correspondingly arranged.Preferably, the height in air blast storehouse can be 8-12mm, excellent
9mm is selected as, the ratio between the height in air blast storehouse and the width of corresponding position spiral case can be 0.01-0.5.
The surge bunker effectively increases the axial dimension of spiral case so that the spiral case becomes one while including axial snail
The mixing spiral case of shell and radial direction spiral case, can effectively buffer gas flow, reduce noise, increase air quantity.Experimental result shows, so
After setting surge bunker, the air quantity in spiral case can increase by 1 cubic meters per minute, and noise can reduce by 1 decibel.
As shown in Figures 4 and 5, which show the front perspective views and rear perspective view of the another embodiment of turbine.
As shown in the figure, turbine includes collar 15 and foundation ring 16, blade 17 is circumferentially arranged between collar 15 and foundation ring 16, and blade includes handing over
For the first blade 171 and the second blade 170 of setting, the second blade 170 includes supercharging fin 172, that is, in the first leaf
Supercharging fin 172 is added on the basis of piece 171.As shown in Figures 4 and 5, it is preferable that the middle part of plate 12 has prominent drum in turbine
It appears 18, can form the wind chamber of bigger in the air draught side of turbine in this way, to increase suction, while be easily installed the motor of motor
Axis.
As shown in Figure 6, it is shown that according to the schematic diagram of the second blade with supercharging fin of the application.Second blade
170 ontology 173 is identical with the first blade 171, and section is arc structure.The both ends of ontology 173 are respectively arranged at collar 15
On foundation ring 16, the height of supercharging fin 172 is less than the height of ontology 173, and the end of supercharging fin 172 does not connect with collar 15
It touches or even is not also contacted with foundation ring 16.The height for being pressurized fin 172 can be the 1/6~5/6 of the height of ontology 17, be pressurized wing
The width of piece 172 can be the 1/6~5/6 of the width of ontology 17；The preferred scope of above-mentioned ratio is 1/3~2/3, and optimal value is
1/2。
Plate can be arranged at the medium height position of supercharging fin 172 in turbine.Supercharging fin 172 can be arranged on this
The centre position of body 17, and be integrally formed with ontology 173.Preferably, when turbine rotates, the inner periphery profile of the first blade 171
The radius of line can be 15cm, and the radius for being pressurized the inner periphery contour line of fin 172 can be 14cm namely supercharging fin 172
Width can be 1cm.It is pressurized the inner side edge undulate or zigzag of fin 172.
The secondary booster of turbo blade can be realized by being pressurized fin by setting, i.e., pass through the supercharging wing of the second blade first
Piece is pressurized air-flow, is then pressurized again by the body part of the second blade and the first blade, experimental result is shown
The pressure and suction force of turbine can increase 20% or so.In addition, by by the inner side edge for being pressurized fin be set as waveform or
Zigzag, can effectively reduce noise during turbine rotation at the effect of can making it have turbulator.
Although disclosed herein embodiment as above, the content only to facilitate understand the present invention and adopt
Embodiment is not limited to the present invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But the scope of patent protection of the present invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (6)
1. a kind of spiral case with surge bunker, including snail chamber, the snail chamber is connected with air outlet, which is characterized in that the spiral case
Two sides respectively be equipped with surge bunker.
2. spiral case according to claim 1, which is characterized in that the surge bunker includes the first surge bunker and the second buffering
Storehouse, first surge bunker and second surge bunker differ in size, and first surge bunker and second surge bunker are equal
The outer surface of the prominent spiral case.
3. spiral case according to claim 2, which is characterized in that on same side, first surge bunker and described
Two surge bunkers are circumferentially positioned opposite；On different sides, two the first surge bunkers are correspondingly arranged, and two the second surge bunkers are also right
It should set.
4. the spiral case according to Claims 2 or 3, which is characterized in that the height of the first surge bunker and the second surge bunker is 8-
12mm。
5. a kind of range hood, including shell, the shell is internally provided with turbine assembly, the turbine assembly include spiral case and
Turbine, which is characterized in that the spiral case is according to the spiral case with surge bunker described in any one of claim 1-4.
6. range hood according to claim 5, which is characterized in that the turbine is the turbine with supercharging fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810127346.6A CN108240355A (en) | 2018-02-08 | 2018-02-08 | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810127346.6A CN108240355A (en) | 2018-02-08 | 2018-02-08 | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108240355A true CN108240355A (en) | 2018-07-03 |
Family
ID=62699787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810127346.6A Pending CN108240355A (en) | 2018-02-08 | 2018-02-08 | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108240355A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05321891A (en) * | 1992-05-21 | 1993-12-07 | Matsushita Seiko Co Ltd | Multiblade fan |
| KR970041821U (en) * | 1995-12-13 | 1997-07-29 | Low noise sirocco fan structure of blower | |
| JP2002161896A (en) * | 2000-11-24 | 2002-06-07 | Calsonic Kansei Corp | Centrifugal fan |
| KR20040010914A (en) * | 2002-07-25 | 2004-02-05 | 엘지전자 주식회사 | Impeller structure of sirocco fan |
| JP2005030349A (en) * | 2003-07-10 | 2005-02-03 | Matsushita Electric Ind Co Ltd | Multi-blade fan |
| FR2868813A1 (en) * | 2004-04-09 | 2005-10-14 | Valeo Climatisation Sa | Centrifugal air propulsive unit for vehicle, has case with peripheral wall having inner side with axial extension zone, and turbine with vanes having outer edges, where outer edges and extension zone are homothetic in their major part |
| KR20060089870A (en) * | 2005-02-04 | 2006-08-09 | 엘지전자 주식회사 | Turbo fan |
| CN1985092A (en) * | 2004-07-14 | 2007-06-20 | 大金工业株式会社 | Centrifugal blower and air conditionaer with centrifugal blower |
| CN201944911U (en) * | 2010-11-25 | 2011-08-24 | 宁波方太厨具有限公司 | Range hood capable of effectively reducing noise and stabilizing flow |
| JP2012112324A (en) * | 2010-11-25 | 2012-06-14 | Mitsubishi Heavy Ind Ltd | Multi-blade centrifugal fan and air conditioner using the same |
| KR20140037576A (en) * | 2012-09-19 | 2014-03-27 | 한라비스테온공조 주식회사 | Blower fan of air conditioning system for automotive vehicles |
| CN205173055U (en) * | 2015-11-18 | 2016-04-20 | 浙江理工大学 | Low noise that trailing edge is buckled does not have spiral case fan wheel |
| JP2016196208A (en) * | 2015-04-02 | 2016-11-24 | 株式会社デンソー | Indoor air conditioning unit and air blower |
| CN206889350U (en) * | 2017-06-02 | 2018-01-16 | 苏州工业园区星德胜电机有限公司 | A kind of centrifugal spiral case blower fan of highly effective low noise |
| CN108253488A (en) * | 2018-02-08 | 2018-07-06 | 浙江帅康电气股份有限公司 | A kind of turbine with supercharging fin and the kitchen ventilator comprising the turbine |
| CN207865500U (en) * | 2018-02-08 | 2018-09-14 | 浙江帅康电气股份有限公司 | A kind of turbine with supercharging fin and the kitchen ventilator comprising the turbine |
| CN207864255U (en) * | 2018-02-08 | 2018-09-14 | 浙江帅康电气股份有限公司 | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case |
-
2018
- 2018-02-08 CN CN201810127346.6A patent/CN108240355A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05321891A (en) * | 1992-05-21 | 1993-12-07 | Matsushita Seiko Co Ltd | Multiblade fan |
| KR970041821U (en) * | 1995-12-13 | 1997-07-29 | Low noise sirocco fan structure of blower | |
| JP2002161896A (en) * | 2000-11-24 | 2002-06-07 | Calsonic Kansei Corp | Centrifugal fan |
| KR20040010914A (en) * | 2002-07-25 | 2004-02-05 | 엘지전자 주식회사 | Impeller structure of sirocco fan |
| JP2005030349A (en) * | 2003-07-10 | 2005-02-03 | Matsushita Electric Ind Co Ltd | Multi-blade fan |
| FR2868813A1 (en) * | 2004-04-09 | 2005-10-14 | Valeo Climatisation Sa | Centrifugal air propulsive unit for vehicle, has case with peripheral wall having inner side with axial extension zone, and turbine with vanes having outer edges, where outer edges and extension zone are homothetic in their major part |
| CN1985092A (en) * | 2004-07-14 | 2007-06-20 | 大金工业株式会社 | Centrifugal blower and air conditionaer with centrifugal blower |
| KR20060089870A (en) * | 2005-02-04 | 2006-08-09 | 엘지전자 주식회사 | Turbo fan |
| CN201944911U (en) * | 2010-11-25 | 2011-08-24 | 宁波方太厨具有限公司 | Range hood capable of effectively reducing noise and stabilizing flow |
| JP2012112324A (en) * | 2010-11-25 | 2012-06-14 | Mitsubishi Heavy Ind Ltd | Multi-blade centrifugal fan and air conditioner using the same |
| KR20140037576A (en) * | 2012-09-19 | 2014-03-27 | 한라비스테온공조 주식회사 | Blower fan of air conditioning system for automotive vehicles |
| JP2016196208A (en) * | 2015-04-02 | 2016-11-24 | 株式会社デンソー | Indoor air conditioning unit and air blower |
| CN205173055U (en) * | 2015-11-18 | 2016-04-20 | 浙江理工大学 | Low noise that trailing edge is buckled does not have spiral case fan wheel |
| CN206889350U (en) * | 2017-06-02 | 2018-01-16 | 苏州工业园区星德胜电机有限公司 | A kind of centrifugal spiral case blower fan of highly effective low noise |
| CN108253488A (en) * | 2018-02-08 | 2018-07-06 | 浙江帅康电气股份有限公司 | A kind of turbine with supercharging fin and the kitchen ventilator comprising the turbine |
| CN207865500U (en) * | 2018-02-08 | 2018-09-14 | 浙江帅康电气股份有限公司 | A kind of turbine with supercharging fin and the kitchen ventilator comprising the turbine |
| CN207864255U (en) * | 2018-02-08 | 2018-09-14 | 浙江帅康电气股份有限公司 | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102032211B (en) | Biconical impeller for range hood | |
| CN107023862B (en) | A kind of top-sucking kitchen ventilator | |
| CA2578301C (en) | Plenum/plug fan assembly | |
| CN105508265B (en) | A kind of novel multi-wing centrifugal fan | |
| CN201944911U (en) | Range hood capable of effectively reducing noise and stabilizing flow | |
| AU2007209185A1 (en) | Improved impeller and fan | |
| CN107503958A (en) | A kind of centrifugal blower fan system for range hood | |
| CN207864255U (en) | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case | |
| CN207865500U (en) | A kind of turbine with supercharging fin and the kitchen ventilator comprising the turbine | |
| CN208886870U (en) | A kind of range hood | |
| CN207513872U (en) | A kind of centrifugal blower fan system | |
| CN203584898U (en) | Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan | |
| CN108253488A (en) | A kind of turbine with supercharging fin and the kitchen ventilator comprising the turbine | |
| CN211423009U (en) | Frequency-adjustable noise-reducing centrifugal ventilator and volute thereof | |
| WO2024055614A1 (en) | Range hood assembly and integrated cooker | |
| CN103629156B (en) | A kind of central air conditioner outdoor unit but axial-flow blower of low-noise high-efficiency | |
| CN208804046U (en) | Centrifugal blower and range hood | |
| CN109424586A (en) | A kind of volute tongue structure for radial fan | |
| CN108240355A (en) | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case | |
| CN207935150U (en) | A kind of impeller, wind turbine and range hood | |
| CN102937112A (en) | Fan volute intermediate plate guide vane air inlet structure of smoke exhaust ventilator | |
| CN207702546U (en) | Range hood with turbocharging function | |
| CN115727008A (en) | Air inlet ring and range hood | |
| CN110857789A (en) | Fume exhaust fan | |
| CN108005953A (en) | A kind of multi-wing centrifugal fan blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |