CN207064330U - A kind of centrifugal blower volute of range hood - Google Patents
A kind of centrifugal blower volute of range hood Download PDFInfo
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- CN207064330U CN207064330U CN201720971705.7U CN201720971705U CN207064330U CN 207064330 U CN207064330 U CN 207064330U CN 201720971705 U CN201720971705 U CN 201720971705U CN 207064330 U CN207064330 U CN 207064330U
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Abstract
It the utility model is related to centrifugal blower technical field, more particularly to a kind of centrifugal blower volute of range hood, it includes spiral case panel, spiral case bottom plate, spiral case coaming plate and volute flange, wherein air inlet is provided with spiral case panel, be provided with motor fixing hole on spiral case bottom plate, the center of circle of the air inlet of spiral case panel spiral case bottom plate projection in the plane overlapped with the motor fixing hole center of circle；The spiral case coaming plate is dissymmetrical structure at snail tongue, and spiral case panel is connected by the snail tongue with the warp surface of continuously smooth transition with spiral case bottom plate；The projection line of edge wheel profile plane where spiral case panel of the spiral case panel is formed by connecting by the straight line AB of rounding off successively, helical curve BD, circular arc line DE and straight line EF；It makes the air flow in impeller border exit flow and spiral case more uniform, is greatly improved air quantity, reduce vortex noise by optimizing design to spiral case inlet pressure.
Description
Technical field
It the utility model is related to centrifugal blower technical field, and in particular to a kind of centrifugal blower volute of range hood.
Background technology
Range hood is a kind of kitchen appliance for purifying kitchen environment.It is arranged on kitchen health energy-saving range hood stove
Above stove, caused harmful oil smoke in the waste and cooking process of cooking stove burning can be taken away rapidly, discharge is outdoor,
Pollution is reduced, purifies air, and has gas defence, the effect of explosion-proof safety guarantee.Range hood is essential kitchen man of family
One of electric equipment.
At present, nearly smoking machine is because from the advantages of closely inhaling fast is obtained, market occupies increasing share at home.Blower fan
Underlying nearly smoking machine due to negative pressure mouth more under, more compact structure, it is more easy to clean the advantages that be more exposed to the favor of consumer.But
Limited by back casing space, it is desirable to which underlying volute of blower size is as small as possible, and typically uses single air inlet structure.Due to this
Design feature, the influence of the design of spiral case inlet pressure to fan performance are most important.The actual measurement air quantity of current blower fan this on the market
In 16m3/min or so, in 54dB or so, the problem of air quantity is smaller and vortex noise is larger be present deposits actual measurement sound pressure level noise
.
The content of the invention
The defects of the purpose of this utility model is to be directed to prior art and deficiency, there is provided a kind of centrifugation wind of range hood
Machine spiral case, it makes air flow in impeller border exit flow and spiral case more by optimizing design to spiral case inlet pressure
Uniformly, air quantity is greatly improved, reduces vortex noise.
A kind of centrifugal blower volute of range hood described in the utility model, it includes spiral case panel, spiral case bottom plate, snail
Shell coaming plate and volute flange, air inlet is wherein provided with spiral case panel, motor fixing hole, spiral case face are provided with spiral case bottom plate
The center of circle of the air inlet of plate spiral case bottom plate projection in the plane overlapped with the motor fixing hole center of circle；
The spiral case coaming plate is dissymmetrical structure at snail tongue, and the snail tongue is with the warp surface of continuously smooth transition by spiral case face
Plate is connected with spiral case bottom plate；
The projection line of edge wheel profile plane where spiral case panel of the spiral case panel is by the straight of rounding off successively
Line AB, helical curve BD, circular arc line DE and straight line EF are formed by connecting；Also, straight line AB and helical curve BD is tangential on B points,
Helical curve BD and circular arc line DE is tangential on D points, and circular arc line DE and straight line EF is tangential on E points；
Helical curve BD is either by the batten by 22 rounding ofves are formed in below table SPL
What curve scaled down or amplification obtained：
| Angle | Radius | Angle | Radius | Angle | Radius | Angle | Radius |
| -19° | 222.6 | 75° | 192.9 | 165° | 168.2 | 255° | 146.7 |
| 0° | 216.2 | 90° | 188.5 | 180° | 164.4 | 270° | 143.3 |
| 15° | 211.3 | 105° | 184.3 | 195° | 160.7 | 281° | 141.1 |
| 30° | 206.6 | 120° | 180.1 | 210° | 157.1 | 295° | 138 |
| 45° | 201.9 | 135° | 176 | 225° | 153.5 | ||
| 60° | 197.3 | 150° | 172.1 | 240° | 150 |
The origin of coordinates in above table corresponding to 22 points is the center of circle of the spiral case panel air inlet 5；
The projection line of edge wheel profile plane where spiral case bottom plate of the spiral case bottom plate is by the straight of rounding off successively
Line A ＇ B ＇, helical curve B ＇ C ＇, circular arc line C ＇ D ＇ and straight line D ＇ E ＇ are formed by connecting, also, straight line A ＇ B ＇ and helical curve B ＇
C ＇ are tangential on B ＇ points, and helical curve B ＇ C ＇ and circular arc line C ＇ D ＇ are tangential on C ＇ points, and circular arc line C ＇ D ＇ and straight line D ＇ E ＇ are tangential on D ＇
Point, helical curve B ＇ C ＇ are either by the SPL by 21 rounding ofves are formed in below table SPL
What scaled down or amplification obtained：
| Angle | Radius | Angle | Radius | Angle | Radius | Angle | Radius |
| -19° | 222.6 | 75° | 192.9 | 165° | 168.2 | 255° | 146.7 |
| 0° | 216.2 | 90° | 188.5 | 180° | 164.4 | 270° | 143.3 |
| 15° | 211.3 | 105° | 184.3 | 195° | 160.7 | 281° | 141.1 |
| 30° | 206.6 | 120° | 180.1 | 210° | 157.1 | ||
| 45° | 201.9 | 135° | 176 | 225° | 153.5 | ||
| 60° | 197.3 | 150° | 172.1 | 240° | 150 |
The origin of coordinates in above table corresponding to 21 points is the center of circle of the spiral case bottom plate motor fixing hole 6；
Point A, B, C of the edge wheel profile of spiral case panel projection line of plane where spiral case panel respectively with spiral case
The edge wheel profile of bottom plate the point A ＇ of the projection line of plane, B ＇, C ＇ where spiral case bottom plate, which are corresponded, to be overlapped.
Further, the circular arc line DE of the edge wheel profile of spiral case panel projection line of plane where spiral case panel
Radius be R, the edge wheel profile circular arc line C ＇ D ＇ of the projection line of plane radius where spiral case bottom plate of spiral case bottom plate is
R ＇, R=R ＇.
Further, the edge wheel profile of the spiral case panel where spiral case panel the straight line AB of the projection line of plane and
Straight line EF angle is θ, 10 °≤θ≤15 °.
Further, the straight line A ＇ B ＇ of the edge wheel profile of spiral case bottom plate projection line of plane where spiral case bottom plate
Angle with straight line D ＇ E ＇ is θ ＇, 10 °≤θ ＇≤15 °.
After said structure, the utility model has the beneficial effect that：A kind of range hood described in the utility model from
Heart volute of blower, it makes the air flow in impeller border exit flow and spiral case by optimizing design to spiral case inlet pressure
More uniformly, air quantity is greatly improved, reduces vortex noise.
【Brief description of the drawings】
Accompanying drawing described herein is to be further understood for providing to of the present utility model, forms one of the application
Point, but do not form to improper restriction of the present utility model, in the accompanying drawings：
Fig. 1 is the structural representation of the utility model centrifugal blower volute；
Fig. 2 is the utility model centrifugal blower volute from the view in terms of spiral case panel normal orientation；
Fig. 3 is sectional view of the utility model centrifugal blower volute along H-H directions；
Fig. 4 be the utility model centrifugal blower volute spiral case panel edge wheel profile where spiral case panel plane
Projection line schematic diagram；
Fig. 5 be the utility model centrifugal blower volute spiral case bottom plate edge wheel profile where spiral case bottom plate plane
Projection line schematic diagram.
Description of reference numerals：
1st, spiral case panel；2nd, spiral case bottom plate；3rd, spiral case coaming plate；31st, snail tongue；4th, volute flange；5th, air inlet；6th, motor is solid
Determine hole.
【Embodiment】
Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, illustrative examples therein with
And explanation is only used for explaining the utility model, but it is not intended as to restriction of the present utility model.
As Figure 1-Figure 5, the centrifugal blower volute of a kind of range hood described in present embodiment, it includes snail
Shell surface plate 1, spiral case bottom plate 2, spiral case coaming plate 3 and volute flange 4, air inlet 5, spiral case bottom plate 2 are wherein provided with spiral case panel 1
On be provided with motor fixing hole 6, the center of circle of the air inlet of spiral case panel spiral case bottom plate projection in the plane consolidate with motor
Determine the coincidence of the hole center of circle；
The spiral case coaming plate 3 is dissymmetrical structure at snail tongue 31, and the snail tongue 31 will with the warp surface of continuously smooth transition
Spiral case panel 1 is connected with spiral case bottom plate 2；
The edge wheel profile of the spiral case panel 1 the place plane of spiral case panel 1 projection line by rounding off successively
Straight line AB, helical curve BD, circular arc line DE and straight line EF are formed by connecting；Also, straight line AB and helical curve BD is tangential on B
Point, helical curve BD and circular arc line DE are tangential on D points, and circular arc line DE and straight line EF is tangential on E points；
Helical curve BD is either by the batten by 22 rounding ofves are formed in below table SPL
What curve scaled down or amplification obtained：
| Angle | Radius | Angle | Radius | Angle | Radius | Angle | Radius |
| -19° | 222.6 | 75° | 192.9 | 165° | 168.2 | 255° | 146.7 |
| 0° | 216.2 | 90° | 188.5 | 180° | 164.4 | 270° | 143.3 |
| 15° | 211.3 | 105° | 184.3 | 195° | 160.7 | 281° | 141.1 |
| 30° | 206.6 | 120° | 180.1 | 210° | 157.1 | 295° | 138 |
| 45° | 201.9 | 135° | 176 | 225° | 153.5 | ||
| 60° | 197.3 | 150° | 172.1 | 240° | 150 |
The origin of coordinates in above table corresponding to 22 points is the center of circle of the spiral case panel air inlet 5；
The edge wheel profile of the spiral case bottom plate 2 the place plane of spiral case bottom plate 2 projection line by rounding off successively
Straight line A ＇ B ＇, helical curve B ＇ C ＇, circular arc line C ＇ D ＇ and straight line D ＇ E ＇ are formed by connecting, also, straight line A ＇ B ＇ and helical curve
B ＇ C ＇ are tangential on B ＇ points, and helical curve B ＇ C ＇ and circular arc line C ＇ D ＇ are tangential on C ＇ points, and circular arc line C ＇ D ＇ and straight line D ＇ E ＇ are tangential on
D ＇ points, helical curve B ＇ C ＇ are bent either by the batten by 21 rounding ofves are formed in below table SPL
What line scaled down or amplification obtained：
| Angle | Radius | Angle | Radius | Angle | Radius | Angle | Radius |
| -19° | 222.6 | 75° | 192.9 | 165° | 168.2 | 255° | 146.7 |
| 0° | 216.2 | 90° | 188.5 | 180° | 164.4 | 270° | 143.3 |
| 15° | 211.3 | 105° | 184.3 | 195° | 160.7 | 281° | 141.1 |
| 30° | 206.6 | 120° | 180.1 | 210° | 157.1 | ||
| 45° | 201.9 | 135° | 176 | 225° | 153.5 | ||
| 60° | 197.3 | 150° | 172.1 | 240° | 150 |
The origin of coordinates in above table corresponding to 21 points is the center of circle of the spiral case bottom plate motor fixing hole 6；
The edge wheel profile of the spiral case panel 1 the projection line of the place plane of spiral case panel 1 point A, B, C respectively with snail
The edge wheel profile of shell bottom plate 2 is corresponded in the point A ＇, B ＇, C ＇ of the projection line of the place plane of spiral case bottom plate 2 and overlapped.
As one kind of the present utility model preferably, the edge wheel profile of the spiral case panel 1 is in the place plane of spiral case panel 1
The circular arc line DE radius of projection line be R, the projection line of the edge wheel profile of spiral case bottom plate 2 in the place plane of spiral case bottom plate 2
Circular arc line C ＇ D ＇ radius be R ＇, R=R ＇.
As one kind of the present utility model preferably, the edge wheel profile of the spiral case panel 1 is in the place plane of spiral case panel 1
The straight line AB and straight line EF angle of projection line be θ, 10 °≤θ≤15 °.
As one kind of the present utility model preferably, the edge wheel profile of the spiral case bottom plate 2 is in the place plane of spiral case bottom plate 2
The straight line A ＇ B ＇ and straight line D ＇ E ＇ angle of projection line be θ ＇, 10 °≤θ ＇≤15 °.
In the utility model, spiral case panel 1, spiral case bottom plate 2, spiral case coaming plate 3 and volute flange 4 are two-by-two by welding phase
Even.By experiment, using the centrifugal blower of the present embodiment spiral case, overall performance is substantially improved, and surveys air quantity 17m3/min, actual measurement
Sound pressure level noise 52dB.
A kind of centrifugal blower volute of range hood described in the utility model, it is set by being optimized to spiral case inlet pressure
Meter, makes the air flow in impeller border exit flow and spiral case more uniform, is greatly improved air quantity, reduces vortex noise.
Described above is only better embodiment of the present utility model, therefore all according to described in the utility model patent application range
The equivalent change or modification done of construction, feature and principle, be included in the utility model patent application range.
Claims (4)
1. a kind of centrifugal blower volute of range hood, it includes spiral case panel（1）, spiral case bottom plate（2）, spiral case coaming plate（3）With
Volute flange（4）, wherein spiral case panel（1）On be provided with air inlet（5）, spiral case bottom plate（2）On be provided with motor fixing hole
（6）, the center of circle of the air inlet of spiral case panel spiral case bottom plate projection in the plane overlapped with the motor fixing hole center of circle；
It is characterized in that：The spiral case coaming plate（3）In snail tongue（31）Locate as dissymmetrical structure, the snail tongue（31）With continuously smooth mistake
The warp surface crossed is by spiral case panel（1）With spiral case bottom plate（2）It is connected；
The spiral case panel（1）Edge wheel profile in spiral case panel（1）The projection line of place plane is by rounding off successively
Straight line AB, helical curve BD, circular arc line DE and straight line EF are formed by connecting；Also, straight line AB and helical curve BD is tangential on B
Point, helical curve BD and circular arc line DE are tangential on D points, and circular arc line DE and straight line EF is tangential on E points；
The helical curve BD is either by the batten by 22 rounding ofves are formed in below table SPL
What curve scaled down or amplification obtained：
The origin of coordinates in above table corresponding to 22 points is the spiral case panel air inlet（5）The center of circle；
The spiral case bottom plate（2）Edge wheel profile in spiral case bottom plate（2）The projection line of place plane is by rounding off successively
Straight line A ＇ B ＇, helical curve B ＇ C ＇, circular arc line C ＇ D ＇ and straight line D ＇ E ＇ are formed by connecting, also, straight line A ＇ B ＇ and helical curve
B ＇ C ＇ are tangential on B ＇ points, and helical curve B ＇ C ＇ and circular arc line C ＇ D ＇ are tangential on C ＇ points, and circular arc line C ＇ D ＇ and straight line D ＇ E ＇ are tangential on
D ＇ points, helical curve B ＇ C ＇ are bent either by the batten by 21 rounding ofves are formed in below table SPL
What line scaled down or amplification obtained：
The origin of coordinates in above table corresponding to 21 points is the spiral case bottom plate motor fixing hole（6）The center of circle；
The spiral case panel（1）Edge wheel profile in spiral case panel（1）Point A, B, C of the projection line of place plane respectively with snail
Shell bottom plate（2）Edge wheel profile in spiral case bottom plate（2）Point A ＇, B ＇, the C ＇ of the projection line of place plane, which are corresponded, to be overlapped.
A kind of 2. centrifugal blower volute of range hood according to claim 1, it is characterised in that：The spiral case panel
（1）Edge wheel profile in spiral case panel（1）The circular arc line DE of the projection line of place plane radius is R, spiral case bottom plate（2）'s
Edge wheel profile is in spiral case bottom plate（2）The circular arc line C ＇ D ＇ of the projection line of place plane radius is R ＇, R=R ＇.
A kind of 3. centrifugal blower volute of range hood according to claim 1, it is characterised in that：The spiral case panel
（1）Edge wheel profile in spiral case panel（1）The straight line AB and straight line EF of the projection line of place plane angle are θ, 10 °≤θ
≤15°。
A kind of 4. centrifugal blower volute of range hood according to claim 1, it is characterised in that：The spiral case bottom plate
（2）Edge wheel profile in spiral case bottom plate（2）Straight line A ＇ B ＇ and straight line D ＇ the E ＇ of the projection line of place plane angle are θ ＇,
10 °≤θ ＇≤15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720971705.7U CN207064330U (en) | 2017-08-06 | 2017-08-06 | A kind of centrifugal blower volute of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720971705.7U CN207064330U (en) | 2017-08-06 | 2017-08-06 | A kind of centrifugal blower volute of range hood |
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| Publication Number | Publication Date |
|---|---|
| CN207064330U true CN207064330U (en) | 2018-03-02 |
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|---|---|---|---|
| CN201720971705.7U Active CN207064330U (en) | 2017-08-06 | 2017-08-06 | A kind of centrifugal blower volute of range hood |
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| CN (1) | CN207064330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513501A (en) * | 2021-04-02 | 2021-10-19 | 宁波方太厨具有限公司 | Volute for range hood, fan system and range hood |
-
2017
- 2017-08-06 CN CN201720971705.7U patent/CN207064330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513501A (en) * | 2021-04-02 | 2021-10-19 | 宁波方太厨具有限公司 | Volute for range hood, fan system and range hood |
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