CN206845543U - A kind of centrifugal blower volute for range hood - Google Patents
A kind of centrifugal blower volute for range hood Download PDFInfo
- Publication number
- CN206845543U CN206845543U CN201720504248.0U CN201720504248U CN206845543U CN 206845543 U CN206845543 U CN 206845543U CN 201720504248 U CN201720504248 U CN 201720504248U CN 206845543 U CN206845543 U CN 206845543U
- Authority
- CN
- China
- Prior art keywords
- spiral case
- straight line
- line
- circular arc
- range hood
- 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.)
- Active
Links
- 241000237858 Gastropoda Species 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of centrifugal blower volute for range hood, it is characterised in that：The molded line of the spiral case is connected in sequence by first straight line, second straight line, circular arc, curve, the 3rd straight line and the 4th straight line, and adjacent straightway and circular arc line segment or adjacent circular arc line segment and curved section or adjacent curved section and straightway are tangent in point of intersection.By the design optimized to the molded line of spiral case, the flow field in spiral case can be improved, improve the performance (air quantity, blast) of blower fan system, reduce noise；The structure of spiral case is improved simultaneously, is made its simple in construction and is stablized, is easy to be attached with outside again.
Description
Technical field
It the utility model is related to a kind of range hood, especially a kind of centrifugal blower volute for range hood.
Background technology
With the raising of the change of people's living environment, and quality of the life, requirement to range hood also more and more higher.
The blower fan that domestic cooking fume remover uses is mostly multi-wing centrifugal fan, carries out air-breathing, exhaust.Centrifugal blower typically by spiral case, motor,
Impeller etc. forms.The operation principle of centrifugal blower is that motor driven wheel rotation is done work to air-flow, and is made by the diffusion of spiral case
Discharged with from radial direction.
A kind of spiral case of centrifugal blower used for range hood as disclosed in the Chinese patent of Application No. 201110118687.5
Molded line, smoothly transitted and be formed by connecting by first straight line, the first circular arc line, the second circular arc line, helix and second straight line, helix
For constant speed helix；A kind of and for example double-faced ventilated formula range hood disclosed in the Chinese patent of Application No. 201220245605.3
Volute structure includes air outlet fixed plate, the spiral case foreboard be arrangeding in parallel and spiral case back plate and for connecting spiral case foreboard and snail
The spiral case side plate of shell back plate, spiral case foreboard and spiral case back plate are provided with circular air inlet, spiral case foreboard edge wheel profile include according to
The secondary first straight line to connect, second straight line, the first circular arc, the second circular arc, the 3rd straight line, three-arc, the 4th circular arc, the 5th circle
Arc, the 4th straight line and the 5th rectilinear(-al)；5th straight line contacts with air outlet fixed plate, second straight line and the 3rd straight line with
5th straight line is vertical；Spiral case back plate is consistent with spiral case foreboard profile and corresponds a little.
Above-mentioned Volute Design mode, the inhomogeneities that impeller axially flows in each runner is inevitably resulted in, together
When due to the anterior intake of multi-wing centrifugal fan impeller much smaller than in the middle part of impeller, rear portion, so as to cause spiral case it is anterior and
There is whirlpool in current collector, the two factors cause the Turbulent Kinetic in the lower left corner of spiral case maximum behind, flowing confusion the most, impeller
Whirlpool is maximum in the blade passage in the lower left corner, and this becomes one of noise source of multi-wing centrifugal fan.
Utility model content
Technical problem to be solved in the utility model is in view of the above-mentioned problems of the prior art, providing a kind of improve
Flow field, the centrifugal blower volute for range hood for improving fan performance, reducing noise.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of centrifugation wind for range hood
Machine spiral case, it is characterised in that：The molded line of the spiral case is by first straight line, second straight line, circular arc, curve, the 3rd straight line and the 4th
Straight line is connected in sequence, adjacent straightway and circular arc line segment or adjacent circular arc line segment and curved section or adjacent curve
Section and straightway are tangent in point of intersection.
Preferably, the molded line of the spiral case has the origin of coordinates, meets that each straight line and circular arc of following conditions form molded line
Datum line：
1) first straight line and the 4th straight line are vertical, and second straight line and the 3rd straight line opposed vertical direction are inclined；
2) circular arc is the snail tongue of spiral case, and radius of curvature 8.2mm, radius of curvature origin is (- 21.9,148.4)；
3) curve is by 30 rounding ofves are formed in following table SPL：
| Angle | Radius | Angle | Radius | Angle | Radius | Angle | Radius | Angle | Radius |
| -8° | 141.85 | 60° | 149.5 | 130° | 160.96 | 200° | 177.52 | 270° | 204.46 |
| 0° | 141.97 | 70° | 151.07 | 140° | 162.88 | 210° | 181.06 | 280° | 207.89 |
| 10° | 143.45 | 80° | 151.61 | 150° | 165.65 | 220° | 184.89 | 289° | 210.43 |
| 20° | 144.96 | 90° | 152.90 | 160° | 167.79 | 230° | 188.99 | ||
| 30° | 146.52 | 100° | 154.25 | 170° | 170.53 | 240° | 193.27 | ||
| 40° | 147.69 | 110° | 155.72 | 180° | 173.27 | 250° | 197.04 | ||
| 50° | 148.48 | 120° | 157.98 | 190° | 175.32 | 260° | 200.7 |
The molded line of the spiral case is 0.8~1.5 times of the datum line.
Abolished to be preferably compressed to the vortex in exit, play a part of noise reduction, the second straight line and first
Angle between straight line is α, and α span is 160 °~170 °, and the angle between the 3rd straight line and the 4th straight line is
β, β span are 160 °~170 °.
In order to stablize the structure of spiral case, the spiral case includes spiral case protecgulum, spiral case bonnet, is connected to spiral case protecgulum and spiral case
Spiral case ring wall between bonnet, the spiral case protecgulum backward flange, the spiral case bonnet forward flange and spiral case ring wall is wrapped up.
For ease of realizing the connection of spiral case and extraneous pipeline by simple structure, while cost is reduced, the scroll casing shape
Into having air outlet, the spiral case protecgulum, spiral case bonnet and spiral case the ring wall outward flanging at air outlet, and set in the air outlet
Put outlet strengthens angle.
For ease of being fixed in the two directions so that spiral case can be fixedly mounted on range hood, avoided not
Necessary structural vibration, the side of the spiral case bonnet away from spiral case protecgulum are welded with spiral case support, and the spiral case support is symmetrical
Ground is arranged on spiral case bonnet close to edge.
Compared with prior art, the utility model has the advantage of：, can by the design optimized to the molded line of spiral case
To improve the flow field in spiral case, the performance (air quantity, blast) of blower fan system is improved, reduces noise；The structure of spiral case is improved simultaneously,
Make its simple in construction and stablize, be easy to be attached with outside again.
Brief description of the drawings
Fig. 1 is the front side schematic diagram of spiral case embodiment of the present utility model；
Fig. 2 is the rear side schematic diagram of spiral case embodiment of the present utility model；
Fig. 3 is the molded line schematic diagram of spiral case embodiment of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Referring to Fig. 1 and Fig. 2, a kind of centrifugal blower volute for range hood, including spiral case protecgulum 1, spiral case bonnet 2,
The spiral case ring wall 3 being connected between spiral case protecgulum 1 and spiral case bonnet 2.Formed with air outlet 4 and air inlet 5 on spiral case.Before spiral case
The flange backward of lid 1, the flange forward of spiral case bonnet 2, thus spiral case ring wall 3 is wrapped up, can preferably pass through the mode of welding
Three is connected.
Spiral case protecgulum 1, spiral case bonnet 2 and spiral case ring wall 3 outward flanging at air outlet 4, and by setting outlet to strengthen
Angle 6 is strengthened, and outlet strengthens angle 6 is connected between each flange, turns into the flange that spiral case is connected with extraneous pipeline, this spline structure
Simple and cost is cheap.Side of the spiral case bonnet 2 away from spiral case protecgulum 1 is welded with spiral case support 7, after being symmetrically disposed in spiral case
Thus lid 2 can be fixed in the two directions close to edge so that and spiral case can be fixedly mounted on range hood,
Avoid unnecessary structural vibration.
Referring to Fig. 3, spiral case inlet pressure (spiral case protecgulum 1, spiral case bonnet 2 are consistent with the molded line of spiral case ring wall 3) by first straight line AB,
Second straight line BC, circular arc C D, curve DE, the 3rd straight line EF and the 4th straight line FG are connected in sequence.Adjacent straightway and circle
Arc or adjacent circular arc line segment and curved section or adjacent curved section and straightway are tangent in point of intersection, such as, second
Straight line BC and circular arc C D is tangent in C points, and circular arc C D and curve DE are tangent in D points, and curve DE and the 3rd straight line EF are tangent in E points.
Pass through above-mentioned Profile Design so that spiral case interior flow field is reasonable, reduces vortex, reduces flow losses, reach higher flow and
Pressure.
Wherein, first straight line AB and the 4th straight line FG be in order to which air-flow is directed to vertical direction, to coordinate extraneous pipeline,
It can be cancelled according to output flow environment, or modification；Circular arc C D forms the snail tongue of spiral case, and its main function is to prevent a part of gas
Body is in spiral case internal circulation flow, raising fan pressure and efficiency；Curve DE is the main molded line of spiral case, and its effect is will to be set in spiral case
The gas that the impeller put comes out is oriented to spiral case, and part dynamic pressure is converted into static pressure, can be formed more by the design of following sizes
Rational spiral case interior flow field, improve the airflow pressure and efficiency of blower fan.
Specifically, such as using the center of circle O of air inlet 5 as the origin of coordinates, X-coordinate axle is horizontal, and Y-coordinate axle is longitudinal direction, full
Foot states the datum line of each straight line and circular arc the composition molded line of condition：
1) curve DE is by 30 rounding ofves are formed in table 1 below SPL：
The curve DE of table 1 composition point coordinates and size
2) circular arc C D is the snail tongue of spiral case, and radius of curvature 8.2mm, radius of curvature origin is (- 21.9,148.4)；
3) first straight line AB and the 4th straight line FG is parallel with Y-coordinate axle (vertical) second straight line BC and the 3rd straight line
EF has carried out certain inclination with respect to Y-coordinate direction of principal axis, thus the vortex in exit can be compressed and abolished, play the work of noise reduction
With the angle between second straight line BC and first straight line AB is α, and α span is preferable, is 160 °~170 °, more excellent
Choosing for 161 °；Angle between 3rd straight line EF and the 4th straight line FG is β, and β span is preferable, be 160 °~
170 °, be more highly preferred to for 165 °.
Local size similarization is carried out with the datum line to design, or size adjusting is 0.8~1.5 times, all for this specially
Within the protection domain of profit.
Claims (6)
- A kind of 1. centrifugal blower volute for range hood, it is characterised in that：The molded line of the spiral case by first straight line (AB), Second straight line (BC), circular arc (CD), curve (DE), the 3rd straight line (EF) and the 4th straight line (FG) are connected in sequence, adjacent Straightway and circular arc line segment or adjacent circular arc line segment and curved section or adjacent curved section and straightway are tangent in point of intersection.
- 2. it is used for the centrifugal blower volute of range hood as claimed in claim 1, it is characterised in that：The molded line tool of the spiral case There is the origin of coordinates (O), meet that each straight line and circular arc of following conditions form the datum line of molded line：1) first straight line (AB) and the 4th straight line (FG) are vertical, second straight line (BC) and the 3rd straight line (EF) opposed vertical side To inclined；2) circular arc (CD) is the snail tongue of spiral case, and radius of curvature 8.2mm, radius of curvature origin is (- 21.9,148.4)；3) curve (DE) is by 30 rounding ofves are formed in following table SPL：
Angle Radius Angle Radius Angle Radius Angle Radius Angle Radius -8° 141.85 60° 149.5 130° 160.96 200° 177.52 270° 204.46 0° 141.97 70° 151.07 140° 162.88 210° 181.06 280° 207.89 10° 143.45 80° 151.61 150° 165.65 220° 184.89 289° 210.43 20° 144.96 90° 152.90 160° 167.79 230° 188.99 30° 146.52 100° 154.25 170° 170.53 240° 193.27 40° 147.69 110° 155.72 180° 173.27 250° 197.04 50° 148.48 120° 157.98 190° 175.32 260° 200.7 The molded line of the spiral case is 0.8~1.5 times of the datum line. - 3. it is used for the centrifugal blower volute of range hood as claimed in claim 2, it is characterised in that：The second straight line (BC) Angle between first straight line (AB) is α, and α span is 160 °~170 °, the 3rd straight line (EF) and the 4th straight Angle between line (FG) is β, and β span is 160 °~170 °.
- 4. such as the centrifugal blower volute according to any one of claims 1 to 3 for range hood, it is characterised in that：It is described Spiral case includes spiral case protecgulum (1), spiral case bonnet (2), the spiral case ring wall being connected between spiral case protecgulum (1) and spiral case bonnet (2) (3), the spiral case protecgulum (1) backward flange, the spiral case bonnet (2) forward flange and by spiral case ring wall (3) wrap up.
- 5. it is used for the centrifugal blower volute of range hood as claimed in claim 4, it is characterised in that：The spiral case is formed with going out Air port (4), the spiral case protecgulum (1), spiral case bonnet (2) and spiral case ring wall (3) are in air outlet (4) place outward flanging, and in institute State air outlet (4) and outlet strengthens angle (6) is set.
- 6. it is used for the centrifugal blower volute of range hood as claimed in claim 4, it is characterised in that：The spiral case bonnet (2) Side away from spiral case protecgulum (1) is welded with spiral case support (7), and the spiral case support (7) is symmetrically disposed in spiral case bonnet (2) Close to edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504248.0U CN206845543U (en) | 2017-05-08 | 2017-05-08 | A kind of centrifugal blower volute for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504248.0U CN206845543U (en) | 2017-05-08 | 2017-05-08 | A kind of centrifugal blower volute for range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845543U true CN206845543U (en) | 2018-01-05 |
Family
ID=60795301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720504248.0U Active CN206845543U (en) | 2017-05-08 | 2017-05-08 | A kind of centrifugal blower volute for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845543U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965470A (en) * | 2017-05-08 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of centrifugal blower volute for range hood |
| CN108561938A (en) * | 2018-07-25 | 2018-09-21 | 杭州老板电器股份有限公司 | Variable cross-section air duct and range hood |
| CN110612397A (en) * | 2018-07-27 | 2019-12-24 | 深圳市大疆创新科技有限公司 | Centrifugal fan and electronic equipment |
-
2017
- 2017-05-08 CN CN201720504248.0U patent/CN206845543U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965470A (en) * | 2017-05-08 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of centrifugal blower volute for range hood |
| CN107965470B (en) * | 2017-05-08 | 2024-04-12 | 宁波方太厨具有限公司 | Centrifugal fan volute for range hood |
| CN108561938A (en) * | 2018-07-25 | 2018-09-21 | 杭州老板电器股份有限公司 | Variable cross-section air duct and range hood |
| CN110612397A (en) * | 2018-07-27 | 2019-12-24 | 深圳市大疆创新科技有限公司 | Centrifugal fan and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103742453B (en) | Range hood centrifugal fan with double air inlet structure | |
| CN107965470A (en) | A kind of centrifugal blower volute for range hood | |
| CN207634387U (en) | A kind of centrifugal blower volute for range hood | |
| CN112377462B (en) | A diversion device, a centrifugal fan and a range hood using the diversion device | |
| CN106438466A (en) | Centrifugal fan and air-conditioner indoor unit | |
| CN104343732A (en) | Volute tongue structure of fan for range hood | |
| CN206845543U (en) | A kind of centrifugal blower volute for range hood | |
| CN109973432A (en) | A kind of centrifugal blower volute for range hood | |
| CN102261341B (en) | Minitype dual-air-out centrifugal fan | |
| CN107965472A (en) | A kind of centrifugal blower volute for range hood | |
| CN102588349B (en) | Axial fans for air and dust exhaust in ducts | |
| CN207080414U (en) | A volute tongue structure for radial fan | |
| CN206845542U (en) | A kind of centrifugal blower volute for range hood | |
| CN102251985B (en) | Box-type centrifugal fan | |
| CN206352596U (en) | A kind of centrifugal blower volute for range hood | |
| CN211059051U (en) | Pipeline fan | |
| CN102312848B (en) | Efficient multi-air outlet energy-saving anti-explosion fan | |
| CN105041722B (en) | A kind of centrifugal blower volute | |
| CN202194839U (en) | Small double-air-outlet centrifugal fan | |
| CN210106248U (en) | Volute of centrifugal fan for range hood and centrifugal fan applied by volute | |
| CN208619414U (en) | A kind of pressurized centrifugan blower | |
| CN204827981U (en) | High -efficient mixed flow fan | |
| CN108980082A (en) | Gas treatment equipment | |
| CN207131603U (en) | A kind of double-suction type multi-wing centrifugal fan | |
| CN109209932A (en) | A kind of smoke exhaust ventilator equipped with diagonal flow fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |