CN209528254U - A kind of the air inlet protective cover and hair drier of blower - Google Patents
A kind of the air inlet protective cover and hair drier of blower Download PDFInfo
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- CN209528254U CN209528254U CN201821984095.5U CN201821984095U CN209528254U CN 209528254 U CN209528254 U CN 209528254U CN 201821984095 U CN201821984095 U CN 201821984095U CN 209528254 U CN209528254 U CN 209528254U
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- air inlet
- protective cover
- inlet protective
- segment
- circular arc
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Abstract
The utility model relates to the air inlet protective covers and hair dryer of a kind of blower, comprising: latitude circle ring, and the strip blade for connecting and being arranged radially with latitude circle ring；Strip blade is projected as the first circular arc line segment on the plane perpendicular to air inlet protective cover central axis; first circular arc line segment includes outside arc segment, and the chord length of outside arc segment is D1, and the maximum distance of outside arc segment to its string section is H1; if H1/D1=a1, a1 meet: 0 < a1≤0.144；First circular arc line segment further includes inside arc segment, and the chord length of inside arc segment is D2, and the maximum distance of inside arc segment to its string section is H2, if H2/D2=a2, a2 meet: 0 < a2≤0.133.Axial flow can be enhanced while guaranteeing air intake, reduce the air-flow chatter of the collision in portion and fan blade in running at high speed in the cavity, to reduce noise, reduce complete machine vibration, reduce air-flow kinetic pressure losses.
Description
Technical field
The utility model relates to a kind of hair dryer, in particular to a kind of hair dryer air inlet protection cover structure.
Background technique
Hair dryer is composed of one group of resistance wire and one high revolving speed small fan, is provided not by motor speed
With the outlet air of intensity, temperature is usually that resistance wire, which is powered, generates heat according to resistance wire heating principle, heats outlet air.Hair dryer
It is widely used in the drying and shaping of hair, but also makees Local Dry for laboratory, psyciotherapy room and industrial production, art designing etc.
Dry, heating and physical therapy are used.
As hair dryer becomes small, internal structure is also more and more compacter, in the prior art in order to hinder hair etc. miscellaneous
Object enters inside hair dryer while providing more Wind Volume, and the rear cover air inlet of hair dryer is designed as strip-shaped hole or circular hole more.
Chinese utility model patent CN207767748U (document 1) discloses a kind of technical solution of hair dryer, air inlet
Mouth square is circular hole.However the above scheme of document 1 still has problems: first, the air-flow of hair dryer is in flow at high speed
It is middle to vibrate, generate noise；Second, the axial flow of air inlet is inadequate, and fan leaf generates vibration and trembling in running at high speed,
Hair dryer complete machine is caused to shake；Third, kinetic pressure losses are very big when rotating flow enters the wind square by it.
Utility model content
The purpose of the utility model is to overcome the defect of the prior art, a kind of reduction airstream vibration is provided, reduces dynamic pressure
The hair dryer and hair dryer rear cover of loss.
The technical solution of the utility model is: a kind of air inlet protective cover of blower characterized by comprising latitude circle ring, with
And the strip blade for connecting and being arranged radially with the latitude circle ring；
The strip blade is projected as the first circular arc line on the plane perpendicular to the air inlet protective cover central axis
Section, the first circular arc line segment includes outside arc segment, and the chord length of the outside arc segment is D1, and the outside arc segment arrives it
The maximum distance of string section is H1, if H1/D1=a1, a1 meet: 0 < a1≤0.144；
The first circular arc line segment further includes inside arc segment, and the chord length of the inside arc segment is D2, the inside arc
The maximum distance of line segment to its string section is H2, if H2/D2=a2, a2 meet: 0 < a2≤0.133.
Further, 0 < a1≤0.12, and 0 < a2≤0.12.
Further, 0.56≤a1≤0.118, and 0.54≤a2≤0.116.
Further, a1 and a2 meets: 0.9≤a1/a2≤1.2.
Further, the first circular arc line segment is by one or more sequentially connected curvature is identical or the different arc segments of curvature
Composition.
Further, the bar shaped leaf is intercepted as the rotational circle cylinder of center axis using the central axis of the air inlet protective cover
In the axis plane projection of the cross section of piece, the side close to air inlet upstream is the second circular arc line segment；The string of the second circular arc line segment
The maximum distance of a length of D, the second circular arc line segment to its string section are H, if H/D=a, are met: -0.3≤a≤0.3.
Further, -0.3≤a≤- 0.1 or 0.1≤a≤0.3.
Further, -0.27≤a≤- 0.15 or 0.15≤a≤0.27.
Further, the strip blade being arranged radially extends radially；The latitude circle ring is concentric circles setting, and
And the semidiameter of two neighboring latitude circle ring is equal.
Further relate to a kind of hair drier, including machine shell and the air inlet that is arranged on rear side of the machine shell, it is described into
Air inlet protective cover is equipped at air port, it is characterised in that: the air inlet protective cover is above-mentioned air inlet protective cover.
The utility model has the following beneficial effects: the strip blade using air inlet protective cover can guarantee air intake
Enhance axial flow simultaneously, reduces the collision in air-flow portion in the cavity, reduce vibration and trembling of the fan blade in running at high speed, from
And reduce noise, reduce the vibration of hair dryer complete machine, and then enhance user experience, in addition, the smooth curve section of strip blade can
The kinetic pressure losses for making rotating flow be converted to the raw windshield of axial miscarriage reduce.
Detailed description of the invention
Fig. 1 is perspective view of the strip blade on the plane perpendicular to air inlet protective cover central axis；
Fig. 2 is the structural schematic diagram for entering the wind protective cover strip blade；
Fig. 3 is the axis plane projection schematic diagram of strip blade；
Fig. 4 is the reference axis schematic diagram of Fig. 3；
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Referring to Fig. 1, Fig. 2, a kind of air inlet protective cover of hair dryer, the air inlet protective cover includes latitude circle ring 1 and along described
The strip blade 2 of latitude circle ring 1 being arranged radially, the strip blade 1 is perpendicular to the air inlet protective cover central axis (in this
The extending direction of mandrel line is identical as air inlet direction) plane on to be projected as one or more sequentially connected curvature identical or bent
First circular arc line segment of rate difference arc segment composition.The first circular arc line segment includes outside arc segment 3, the outside arc segment
3 chord length be D1, the outside arc segment 3 to the string section maximum distance be H1, if H1/D1=a1, then have 0 < a1≤
0.144；The first circular arc line segment further includes inside arc segment 4, and the chord length of the inside arc segment 4 is D2, the inside arc
The maximum distance of line segment 4 to the string section then has 0 < a2≤0.133 if H2/D2=a2 for H2；Preferably, 0 < a1≤0.12
And 0 < a2≤0.12.It is under conditions of meeting above-mentioned, it can be achieved that maximized by a large amount of tests to air inlet protective cover
Axial stream is provided, air inlet through hollow shaft effect is improved, reduces the collision in air-flow portion in the cavity；Simultaneously because in circular arc smooth curve section
Without mutation, circulate in this way by the rotating flow of the air inlet protective cover along the windward side flowing of the strip blade, by rotation
When being changed to axis stream, smooth windward side is smaller to the obstruction of air-flow, so that rotating flow is converted to the dynamic of the raw windshield of axial miscarriage
Crushing, which loses, to be reduced.It is further preferable that 0.56≤a1≤0.118, and 0.54≤a2≤0.116；And further preferred a1 with
A2 meets the following conditions: 0.9≤a1/a2≤1.2.
It is the axis plane projection schematic diagram of the strip blade of the air inlet protective cover, with the air inlet protective cover referring to Fig. 3,4
Central axis be center axis rotational circle cylinder intercept the strip blade cross section axis plane projection, the strip blade
It is one or more sequentially connected curvature is identical or curvature is different camber line close to the side of air inlet upstream in the projection in the face
The second circular arc line segment of Duan Zucheng.The chord length of the second circular arc line segment be D, the second circular arc line segment to the string section most
Then meet for H if H/D=a at a distance: -0.3≤a≤0.3.Further, reference axis referring to fig. 4, wherein where chord length
Straight line is Y axis, and H is negative, then a is negative, and the second circular arc line segment of the strip blade is to outlet air updrift side at this time
Protrusion；When it is 0 that H, which is 0, a, the second circular arc line segment of the strip blade be straightway form (be not shown in the figure, this
When the straightway to be considered as by rate be 0, radius is infinitely great circular arc line segment)；When H is positive number, and a is positive number, institute at this time
The the second circular arc line segment for stating strip blade is protruded to air inlet updrift side.Preferably, -0.3≤a≤- 0.1 or 0.1≤a
≦0.3；It is further preferable that -0.27≤a≤- 0.15 or 0.15≤a≤0.27.
A kind of hair dryer is equipped with above-mentioned including the air inlet on rear side of machine shell and the machine shell in the air inlet
Protective cover is entered the wind, the protective cover includes several latitude circle rings and several radial strip blades, and the radial direction strip blade is in radiation
Shape, the latitude circle ring are equal for the semidiameter of concentric circles and preferably two neighboring latitude circle ring.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (11)
1. a kind of air inlet protective cover of blower characterized by comprising latitude circle ring, and connect with the latitude circle ring and radial
The strip blade of setting；
The strip blade is projected as the first circular arc line segment, institute on the plane perpendicular to the air inlet protective cover central axis
Stating the first circular arc line segment includes outside arc segment, and the chord length of the outside arc segment is D1, the outside arc segment to its string
The maximum distance of section is H1, if H1/D1=a1, a1 meet: 0 < a1≤0.144；
The first circular arc line segment further includes inside arc segment, and the chord length of the inside arc segment is D2, the inside arc segment
Maximum distance to its string section is H2, if H2/D2=a2, a2 meet: 0 < a2≤0.133.
2. the air inlet protective cover of blower according to claim 1, it is characterised in that: 0 < a1≤0.12, and 0 < a2≤
0.12。
3. the air inlet protective cover of blower according to claim 2, it is characterised in that: 0.56≤a1≤0.118, and 0.54
≦a2≦0.116。
4. the air inlet protective cover of blower according to claim 1 to 3, it is characterised in that: a1 and a2 meets: 0.9≤
a1/a2≦1.2。
5. the air inlet protective cover of blower according to claim 4, it is characterised in that: the first circular arc line segment is by one or more
The sequentially connected curvature of item is identical or the different arc segments of curvature form.
6. the air inlet protective cover of blower according to claim 4, it is characterised in that: with the central axis of the air inlet protective cover
Line is in the axis plane projection for the cross section that the rotational circle cylinder of center axis intercepts the strip blade, close to the side of air inlet upstream
For the second circular arc line segment；The chord length of the second circular arc line segment is D, the maximum distance of the second circular arc line segment to its string section
Meet: -0.3≤a≤0.3 for H if H/D=a.
7. the air inlet protective cover of blower according to claim 6, it is characterised in that: -0.3≤a≤- 0.1 or 0.1≤a≤
0.3。
8. the air inlet protective cover of blower according to claim 7, it is characterised in that: -0.27≤a≤- 0.15 or 0.15≤
a≦0.27。
9. according to claim 1-3, in 5-8 any blower air inlet protective cover, it is characterised in that: it is described to be arranged radially
Strip blade extend radially；The latitude circle ring is concentric circles setting, and the semidiameter of two neighboring latitude circle ring is equal.
10. the air inlet protective cover of blower according to claim 4, it is characterised in that: the strip blade being arranged radially
It extends radially；The latitude circle ring is concentric circles setting, and the semidiameter of two neighboring latitude circle ring is equal.
11. a kind of hair drier is set including machine shell and the air inlet being arranged on rear side of the machine shell in the air inlet
There is air inlet protective cover, it is characterised in that: the air inlet protective cover is any air inlet protective cover in claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821984095.5U CN209528254U (en) | 2018-11-29 | 2018-11-29 | A kind of the air inlet protective cover and hair drier of blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821984095.5U CN209528254U (en) | 2018-11-29 | 2018-11-29 | A kind of the air inlet protective cover and hair drier of blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209528254U true CN209528254U (en) | 2019-10-25 |
Family
ID=68262446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821984095.5U Active CN209528254U (en) | 2018-11-29 | 2018-11-29 | A kind of the air inlet protective cover and hair drier of blower |
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| Country | Link |
|---|---|
| CN (1) | CN209528254U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701301A (en) * | 2021-08-02 | 2021-11-26 | 北京金茂绿建科技有限公司 | Purification and deodorization device |
-
2018
- 2018-11-29 CN CN201821984095.5U patent/CN209528254U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701301A (en) * | 2021-08-02 | 2021-11-26 | 北京金茂绿建科技有限公司 | Purification and deodorization device |
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