CN106438485A - Volute of extractor hood and extractor hood - Google Patents
Volute of extractor hood and extractor hood Download PDFInfo
- Publication number
- CN106438485A CN106438485A CN201610983688.9A CN201610983688A CN106438485A CN 106438485 A CN106438485 A CN 106438485A CN 201610983688 A CN201610983688 A CN 201610983688A CN 106438485 A CN106438485 A CN 106438485A
- Authority
- CN
- China
- Prior art keywords
- spiral case
- arc section
- range hood
- outside plate
- drainage
- 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
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
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- 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
- F04D29/663—Sound attenuation
-
- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- 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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Abstract
The invention discloses a volute of an extractor hood and an extractor hood. The volute of the extractor hood comprises an outer plate and a drainage part. The drainage part is arranged on the inner surface of the outer plate and comprises a head arc section and a tail arc section which are distributed in the flowing direction of airflow in the volute. The head arc section is connected with the tail arc section. An included angle formed between the head arc section and the outer plate is larger than an included angle between the tail arc section and the outer plate, and the arc length of the head arc section is smaller than the arc length of the tail arc section. In this way, air pressure can be effectively increased, moreover, balance of the airflow can be improved, pneumatic noise and vibration caused by airflow nonuniformity are reduced to the minimum, the purposes of vibration and noise reduction are achieved, and the requirements of markets and consumers for the extractor hood are further met.
Description
Technical field
The present invention relates to kitchen appliance technical field, more particularly, to a kind of spiral case of range hood and there is this spiral case
Range hood.
Background technology
In correlation technique, the main flow direction of range hood noise reduction mainly has several classes, including active noise reduction, sound-absorbing material noise reduction
With the mode such as applying drainage system in runner.Consider the underlying of cost and noise reduction, front two classpaths are generally only used as complementary
Means apply in range hood, for applying more drainage system noise reduction, generally can add one on existing type
A little structures, for range hood critical piece, the pressure that such as spiral case, cabinet, panel etc. open again is less.Common drainage dress
Put and the air-flow flowing through can be dredged, the aerodynamic noise that reduction pressure inhomogeneities causes and the structure brought by it are shaken
Dynamic.
But, drainage system is riser shape thin-wall construction mostly, and by airflow function heterogeneous in air channel, riser is easy
Generation is trembled, and introduces extra structural vibration.Air-flow may be upset when deforming serious, increase aerodynamic noise on the contrary.In addition, by
Air-flow is had to pass through in riser both sides, even if structure setting more rationally can reach the effect of noise reduction it is also possible to because stand
The both sides area of plate significantly increases friction, causes the larger pressure loss.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention carries
Go out a kind of spiral case of range hood, this worm frame reliability preferably, and can preferably reduce the noise of range hood.
The present invention further proposes a kind of range hood.
The spiral case of the range hood according to the present invention, including：Outside plate；Drainage part, described drainage part is arranged on described outside plate
Inner surface on and include：On described spiral case interior air-flow flow direction, the head arc section of distribution and afterbody arc section, described
Head arc section is connected with described afterbody arc section, and the angle between described head arc section and described outside plate is more than described afterbody
The arc length of the angle between arc section and described outside plate and described head arc section is less than the circular arc of described afterbody arc section
Length.
The spiral case of the range hood according to the present invention, drainage part is inwardly projecting from the inner surface of outside plate, so protrudes
Drainage part can further reduce the space in spiral case, can be effectively increased blast.Meanwhile, by arranging drawing of said structure
Stream part, the corresponding region of drainage part outside plate of circular arc compared with air flow contacts face, area increases seldom, so can reduce and gas
The area of stream contact friction.Thus, diminish with the space in spiral case and belong to compared with the supercharging bringing in a small amount, integrate and see, can
To be prevented effectively from the reduction of blast.In addition, the drainage part being raised outside plate is broken by the big whirlpool that the air-flow flowing out impeller blade is formed
Go to sticks and staves, simultaneously afterbody arc section can help air-flow fairing pass through spiral case, such that it is able to increase air-flow harmony so that due to
Aerodynamic noise that air-flow inhomogeneities is brought and vibration are down to minimum, reach the purpose of vibration and noise reducing, meet further market and
The demand to range hood for the consumer.
In addition, following difference distinguishing feature can also be had according to the spiral case of the range hood of the present invention：
In some examples of the present invention, described drainage part includes：Drainage piece, described drainage piece includes described head circular arc
Section and described afterbody arc section.
In some examples of the present invention, described drainage piece is bonded on the inner surface of described outside plate.
In some examples of the present invention, described outside plate is provided with spacing hole, the head fits of described drainage piece are in institute
State at spacing hole.
In some examples of the present invention, described drainage part also includes：Side plate, described side plate is arranged on described drainage piece
The both sides and inner surface with described outside plate is connected.
In some examples of the present invention, the outward flange of described side plate is identical with the arc of the inner surface of described outside plate, institute
The inward flange stating side plate is identical with the arc of described drainage piece.
In some examples of the present invention, described drainage part is multiple and divides on described spiral case interior air-flow flow direction
Cloth.
In some examples of the present invention, on described spiral case interior air-flow flow direction, corresponding to each described drainage part
The arc length of described outside plate become larger.
In some examples of the present invention, the arc length of the described outside plate at interval between two adjacent described drainage parts
Identical.
According to the range hood of the present invention, including the spiral case of above-mentioned range hood.
The beneficial effect of described range hood is identical with the beneficial effect of the spiral case of above-mentioned range hood, and here is no longer detailed
State.
Brief description
Fig. 1 is the stereogram of the spiral case according to an embodiment of the present invention；
Fig. 2 is the side view of the spiral case according to an embodiment of the present invention；
Fig. 3 is the stereogram of multiple drainage parts；
Fig. 4 is the side view of multiple drainage parts；
Fig. 5 is the side view of the spiral case according to present invention another kind embodiment.
Reference：
Spiral case 10；
Outside plate 1；Spacing hole 11；
Drainage part 2；Drainage piece 21；Head arc section 21a；Afterbody arc section 21b；Side plate 22.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings.Below with reference to
The embodiment of Description of Drawings is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings describe the spiral case 10 of range hood according to embodiments of the present invention in detail.
The spiral case 10 of range hood according to embodiments of the present invention can include：Outside plate 1 and drainage part 2, wherein, drainage part
On 2 inner surfaces being arranged on outside plate 1, drainage part 2 can guide air-flow in the space in outside plate 1, so can reduce pressure
Aerodynamic noise and the structural vibration being brought by it that inhomogeneities causes.
And, drainage part 2 includes：The head arc section 21a of distribution and afterbody circle on spiral case 10 interior air-flow flow direction
Segmental arc 21b, head arc section 21a is connected with afterbody arc section 21b.Wherein, spiral case 10 interior air-flow flow direction can be in Fig. 2
The shown direction of arrow that is to say, that air-flow can in spiral case 10 counterclockwise flow, and in the counterclockwise direction, drainage
Part 2 can include the head arc section 21a being sequentially distributed and afterbody arc section 21b, and so, air-flow can first pass through head circular arc
Section 21a flows to afterbody arc section 21b again.
Angle between head arc section 21a and outside plate 1 is more than the angle between afterbody arc section 21b and outside plate 1, and
The arc length of head arc section 21a is less than the arc length of afterbody arc section 21b.It is understood that drainage part 2 is from outside plate
Inwardly projecting on 1 inner surface, the drainage part 2 of so protrusion can further reduce the space in spiral case 10, can be effective
Increase blast.Meanwhile, by arranging the drainage part 2 of said structure, the outside plate 1 of drainage part 2 circular arc compared with air flow contacts face
Corresponding region, area increases seldom, so can reduce the area with air flow contacts friction.Thus, with spiral case 10 in space
The supercharging bringing that diminishes is compared and is belonged in a small amount, integrates and sees, can be prevented effectively from the reduction of blast.In addition, flowing out impeller leaf
The drainage part 2 being raised outside plate 1 is crushed by the big whirlpool that the air-flow of piece is formed, and afterbody arc section 21b can help air-flow simultaneously
Spiral case 10 is passed through in fairing, such that it is able to increase air-flow harmony so that the aerodynamic noise that brought due to air-flow inhomogeneities and
Vibration is down to minimum, reaches the purpose of vibration and noise reducing, meets the market and consumer demand to range hood further.
According to a preferred embodiment of the present invention, as depicted in figs. 1 and 2, drainage part 2 can include：Drainage piece 21, draws
Flow 21 includes head arc section 21a and afterbody arc section 21b.By drainage piece 21 is arranged slabbing, can be at least certain
The weight of drainage part 2 is reduced on degree, it is possible to reduce the weight of spiral case 10 is it is ensured that the overall structure of range hood is reliable
Property.And easily designed head arc section 21a and afterbody arc section 21b on drainage piece 21, so can reduce production cost, can
To improve the production efficiency of drainage piece 21.
Alternatively, drainage piece 21 can be bonded on the inner surface of outside plate 1.For example, drainage piece 21 can pass through bonding agent
It is bonded in the installation difficulty that drainage piece 21 so can be reduced on the inner surface of outside plate 1, and because bond area is big, permissible
Reduce the problem of additionally trembling causing because strength of structural materials is little, and then unnecessary structural vibration and noise can be avoided.
Further, as shown in figure 1, spacing hole 11 can be provided with outside plate 1, the head fits of drainage piece 21 are spacing
At hole 11.For example, the head of drainage piece 21 can be provided with angle, and angle can stretch into and coordinate at spacing hole 11,
Such that it is able to drainage piece 21 is better secured to can avoid the deformation of drainage piece 21 on outside plate 1, and then can ensure that spiral case
10 overall structure reliability.And, this kind of fixed form is simple and convenient, efficiency high.In addition, the head by fixing drainage piece 21
Portion, can preferably improve reliability on outside plate 1 for the drainage piece 21.
Alternatively, as shown in Figure 1, Figure 2 with shown in Fig. 5, drainage part 2 can also include：Side plate 22, side plate 22 is arranged on drainage piece
21 both sides, and side plate 22 is connected with the inner surface of outside plate 1.Wherein, side plate 22 can play the work of supporting drainage piece 21
With such that it is able to improve installation reliability on outside plate 1 for the drainage piece 21, and side plate 22 may also operate as the work of anti-gas-leak
With that is, side plate 22 can prevent air-flow from passing through from the both sides of drainage piece 21, the noise that air-flow can be avoided to produce, and can improve snail
The structural reliability of shell 10.
Preferably, as shown in Figure 4 and Figure 5, the outward flange of side plate 22 is identical with the arc of the inner surface of outside plate 1, side plate 22
Inward flange identical with the arc of drainage piece 21.The shape of so side plate 22 can phase between outside plate 1 and drainage piece 21 respectively
Adaptation, and then the structural reliability of drainage part 2 can be improved, and also the cooperation that can be lifted between drainage part 2 and outside plate 1 is reliable
Property and cosmetic look.
It should be noted that in order to preferably guide air-flow, as shown in Figure 1, Figure 2 with shown in Fig. 5, drainage part 2 can be multiple,
And multiple drainage part 2 is distributed on spiral case 10 interior air-flow flow direction.As depicted in figs. 1 and 2, drainage part 2 can be four,
As shown in figure 5, drainage part 2 can be three.Certainly, in actual applications, the size of drainage piece 21, quantity, position, can
To be designed with the concrete structure of the spiral case 10 with reference to different model range hood, to reach best effect of vibration and noise reduction.
Further, on spiral case 10 interior air-flow flow direction, the arc length of each outside plate 1 corresponding to drainage part 2
Become larger.As shown in Figure 3 and Figure 4, the multiple drainage parts being from left to right distributed are arranged according to spiral case 10 interior air-flow flow direction
Cloth.So so that each drainage part 2 plays preferably elicitation effect in the position of oneself to air-flow, and can improve whole
The noise reduction of individual spiral case 10, can lift the quality of range hood.
Wherein, the crossover position between the head arc section 21a and afterbody arc section 21b of drainage piece 21 be drainage piece 21 away from
From the farthest position of outside plate 1, on spiral case 10 interior air-flow flow direction, the maximum distance to outside plate 1 of each drainage piece 21
Become larger, so that drainage piece 21 better breaks up big whirlpool, can effectively reduce the noise of range hood.
Between two adjacent drainage parts 2, the arc length of the outside plate 1 at interval is identical.By reasonable, two drainage parts are set
The distance between 2, so that the scope that each drainage part 2 can be dredged is close, cause such that it is able to reduce pressure inhomogeneities
Aerodynamic noise.
Range hood according to embodiments of the present invention, including the spiral case 10 of the range hood of above-described embodiment.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of spiral case of range hood is it is characterised in that include：
Outside plate；
Drainage part, described drainage part is arranged on the inner surface of described outside plate and includes：In described spiral case interior air-flow flow direction
The head arc section of upper distribution and afterbody arc section, described head arc section is connected with described afterbody arc section, described head circle
Angle between segmental arc and described outside plate is more than angle and described head circular arc between described afterbody arc section and described outside plate
The arc length of section is less than the arc length of described afterbody arc section.
2. the spiral case of range hood according to claim 1 is it is characterised in that described drainage part includes：Drainage piece, described
Drainage piece includes described head arc section and described afterbody arc section.
3. the spiral case of range hood according to claim 2 is it is characterised in that described drainage piece is bonded in described outside plate
On inner surface.
4. the spiral case of range hood according to claim 2 is it is characterised in that be provided with spacing hole on described outside plate, institute
The head fits stating drainage piece are at described spacing hole.
5. the spiral case of range hood according to claim 2 is it is characterised in that described drainage part also includes：Side plate, described
Side plate is arranged on the both sides of described drainage piece and is connected with the inner surface of described outside plate.
6. the spiral case of range hood according to claim 5 is it is characterised in that the outward flange of described side plate and described outside plate
Inner surface arc identical, the inward flange of described side plate is identical with the arc of described drainage piece.
7. the spiral case of the range hood according to any one of claim 1-6 is it is characterised in that described drainage part is multiple
And be distributed on described spiral case interior air-flow flow direction.
8. the spiral case of range hood according to claim 7 is it is characterised in that in described spiral case interior air-flow flow direction
On, the arc length of each described outside plate corresponding to described drainage part becomes larger.
9. the spiral case of range hood according to claim 7 is it is characterised in that between adjacent two described drainage parts
Every described outside plate arc length identical.
10. a kind of range hood is it is characterised in that include the snail of the range hood according to any one of claim 1-9
Shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983688.9A CN106438485A (en) | 2016-11-08 | 2016-11-08 | Volute of extractor hood and extractor hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983688.9A CN106438485A (en) | 2016-11-08 | 2016-11-08 | Volute of extractor hood and extractor hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106438485A true CN106438485A (en) | 2017-02-22 |
Family
ID=58207837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610983688.9A Pending CN106438485A (en) | 2016-11-08 | 2016-11-08 | Volute of extractor hood and extractor hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438485A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022381A (en) * | 2020-01-03 | 2020-04-17 | 宁波方太厨具有限公司 | Flow guide noise reduction device and range hood applying same |
| CN111412511A (en) * | 2020-05-07 | 2020-07-14 | 合肥柏隆科技发展有限公司 | Noise-reducing range hood |
| CN111780398A (en) * | 2020-06-12 | 2020-10-16 | 江苏亚星波纹管有限公司 | Volute-simulated type noise elimination and ventilation device and using method thereof |
| CN113864836A (en) * | 2020-06-30 | 2021-12-31 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke exhaust ventilator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006138268A (en) * | 2004-11-12 | 2006-06-01 | Fujitsu General Ltd | Centrifugal fan device |
| CN202483954U (en) * | 2011-12-28 | 2012-10-10 | 芜湖美的厨卫电器制造有限公司 | Centrifugal blower volute of range hood |
| CN103486618A (en) * | 2013-09-29 | 2014-01-01 | 北京动力机械研究所 | Cyclone for aviation gas turbine engine |
| CN104236040A (en) * | 2014-10-17 | 2014-12-24 | 珠海格力电器股份有限公司 | Wind blocking device for volute, volute component and air conditioner |
| CN204253443U (en) * | 2014-10-15 | 2015-04-08 | 长沙中粮机械有限公司 | For afflux spiral case and the centrifugal blower of centrifugal blower |
| CN104929953A (en) * | 2015-06-23 | 2015-09-23 | 浙江工业大学 | Vibration and noise reduction centrifugal pump provided with bionic structures |
-
2016
- 2016-11-08 CN CN201610983688.9A patent/CN106438485A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006138268A (en) * | 2004-11-12 | 2006-06-01 | Fujitsu General Ltd | Centrifugal fan device |
| CN202483954U (en) * | 2011-12-28 | 2012-10-10 | 芜湖美的厨卫电器制造有限公司 | Centrifugal blower volute of range hood |
| CN103486618A (en) * | 2013-09-29 | 2014-01-01 | 北京动力机械研究所 | Cyclone for aviation gas turbine engine |
| CN204253443U (en) * | 2014-10-15 | 2015-04-08 | 长沙中粮机械有限公司 | For afflux spiral case and the centrifugal blower of centrifugal blower |
| CN104236040A (en) * | 2014-10-17 | 2014-12-24 | 珠海格力电器股份有限公司 | Wind blocking device for volute, volute component and air conditioner |
| CN104929953A (en) * | 2015-06-23 | 2015-09-23 | 浙江工业大学 | Vibration and noise reduction centrifugal pump provided with bionic structures |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022381A (en) * | 2020-01-03 | 2020-04-17 | 宁波方太厨具有限公司 | Flow guide noise reduction device and range hood applying same |
| CN111412511A (en) * | 2020-05-07 | 2020-07-14 | 合肥柏隆科技发展有限公司 | Noise-reducing range hood |
| CN111780398A (en) * | 2020-06-12 | 2020-10-16 | 江苏亚星波纹管有限公司 | Volute-simulated type noise elimination and ventilation device and using method thereof |
| CN113864836A (en) * | 2020-06-30 | 2021-12-31 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke exhaust ventilator |
| CN113864836B (en) * | 2020-06-30 | 2023-08-01 | 佛山市顺德区美的洗涤电器制造有限公司 | Fume exhaust fan |
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| PB01 | Publication | ||
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Application publication date: 20170222 |