CN206239309U - Hand dryer - Google Patents
Hand dryer Download PDFInfo
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- CN206239309U CN206239309U CN201620683757.XU CN201620683757U CN206239309U CN 206239309 U CN206239309 U CN 206239309U CN 201620683757 U CN201620683757 U CN 201620683757U CN 206239309 U CN206239309 U CN 206239309U
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- air inlet
- air
- hand dryer
- drainage hood
- baffle plate
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Abstract
The utility model is related to hand dryer technical field, there is provided a kind of hand dryer.The hand dryer includes housing and the motor being arranged in housing；Housing is provided with the first air inlet, and motor has the second air inlet；Drainage hood is covered with outside second air inlet, drainage hood is provided with opening, and opening connects with the first air inlet.Drainage hood is set by the outer shroud of air inlet in motor, and the air inlet of motor is connected with the air inlet on hand dryer housing by the drainage hood, charge air flow to will go into the second air inlet is formed and is oriented to, and thus can reduce or even eliminate the inflow noise of the second air inlet；In addition, the drainage hood also plays good insulating effect to the motor noise by the second air inlet direct projection out, in general, the drainage hood can be greatly reduced the complete machine noise of hand dryer.
Description
Technical field
The utility model is related to hand dryer technical field, specifically provides a kind of hand dryer for being provided with noise-reducing components.
Background technology
In recent years, at the restaurant, hotel, the lavatory/toilet of the public place such as commercial office building, be typically equipped with being used for
After washing wet hand insertion, the hand drying equipment by blowing out hot blast, for people after hand is washed flash baking hand needs
Hand dryer product.The product produces sizable noise because of air-flow high-speed motion and motor itself in use, in order to
This noise is reduced, the experience of user is lifted, prior art is substantially to reach absorption by increasing acoustical cotton in air channel to make an uproar
The purpose of sound.However, it is unobvious to carry out soundproof effect by acoustical cotton merely.
In addition, also have some hand dryers that one water conservancy diversion frame is set by motor air inlet, and on the axle center part of water conservancy diversion frame
Extend guide vane, by arcuation guide vane and the structure of above-mentioned composition, hand dryer air inlet is effectively reduced to reach
Noise produced by place.It is apparent that this its structure is relative complex, manufacturing cost is higher.While guide vane and electrical axis
Axiality requirement it is higher, could so maintain the less noise of generation.Motor in working order when guide vane rotation it is same
Sample can produce noise, and this runs in the opposite direction with the purpose of noise reduction.
Utility model content
(1) technical problem to be solved
To be solved in the utility model is existing hand dryer excessive technical problem of noise during dry hand.
(2) technical scheme
In order to solve the above technical problems, the utility model provides a kind of hand dryer, the hand dryer includes housing and setting
Motor in the housing；The housing is provided with the first air inlet, and the motor has the second air inlet；Described second enters
Drainage hood is covered with outside air port, the drainage hood is provided with opening, and the opening connects with first air inlet.
Preferably, the drainage hood is gradually become by with the opening to one end bore connected with second air inlet
It is small.
Preferably, one end that the drainage hood is connected with second air inlet is globoidal structure.
Preferably, the drainage hood is provided with acoustical cotton.
Preferably, on the projecting direction of second air inlet, the spacing of the drainage hood and second air inlet
More than 8mm.
Preferably, the drainage hood includes first half-shell and the second half-shell；The first half-shell is formed at described second and enters
The periphery in air port；Second half-shell is detachably connected with the first half-shell, to limit a chamber with the opening
Body structure, second air inlet is contained in the cavity body structure, and the opening connects with first air inlet.
Preferably, the opening is connected by air intake passage with first air inlet；Gear is provided with the air intake passage
Have for the gap by air-flow between the inwall of plate, the baffle plate and the air intake passage.
Preferably, bearing of trend of the baffle plate perpendicular to the air intake passage.
Preferably, the gap is overall structure in a ring.
Preferably, the baffle plate is provided with acoustical cotton towards the side of first air inlet.
(3) beneficial effect
A kind of hand dryer that the utility model is provided, drainage hood is set by the outer shroud of air inlet in motor, and by this
Drainage hood makes the air inlet of motor be connected with the air inlet on hand dryer housing, the air inlet gas to will go into the second air inlet
Stream is formed and is oriented to, and thus can reduce or even eliminate the inflow noise of the second air inlet；In addition, the drainage hood by second also to being entered
Direct projection motor noise out in air port plays good insulating effect.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of hand dryer of the utility model embodiment.
Fig. 2 is the kuppe of the utility model embodiment and the exploded view of motor.
Fig. 3 is the upward view of the first half-shell of the utility model embodiment.
Fig. 4 is the side view of the first half-shell of the utility model embodiment.
Fig. 5 is the front view of the first half-shell of the utility model embodiment.
Reference：
1st, housing；2nd, hand insertion section；3rd, the first air inlet；4th, the first air outlet；5th, motor；6th, air intake passage；7th, air-out
Passage；8th, first half-shell；81st, globoidal structure；9th, the second half-shell；10th, drainage hood；11st, the second air inlet；12nd, baffle plate.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to scope of the present utility model.
, it is necessary to illustrate in description of the present utility model, unless otherwise clearly defined and limited, term " connection "
Should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be direct phase
Even, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, can be with concrete condition understanding
State concrete meaning of the term in the utility model.
Embodiment one
With reference to shown in Fig. 1 and Fig. 2, a kind of hand dryer that the utility model embodiment one is provided, including housing 1 and be arranged on
Motor 5 in housing 1；Housing 1 is provided with the first air inlet 3, and motor 5 has the second air inlet 11；The outer cover of second air inlet 11
Drainage hood 10 is provided with, drainage hood 10 is connected on the shell of motor 5, and the drainage hood 10 is also connected with the first air inlet 3.This draws
Stream cover 10 sets up a gas channel between the first air inlet 3 and the second air inlet 11, by what is entered by the first air inlet 3
Gas is incorporated into motor 5.In addition, being additionally provided with hand insertion section 2 on housing 1, the inwall of the hand insertion section 2 is provided with the first air-out
Mouth 4；Motor 5 also has the second air outlet, and air-out passage 7 is communicated between the first air outlet 4 and the second air outlet.
Thus, when motor 5 is operated, air-flow enters from the first air inlet 3, then sequentially passes through air intake passage 6, the second air intake
The 11, second air outlet of mouth and air-out passage 7, are finally entered in insertion section in one's hands 2, to the hand of user by the first air outlet 4
Brushed in portion.
Wherein, because drainage hood 10 is the periphery that covers on the second air inlet 11, i.e., formed in the periphery of the second air inlet 11
One cavity structure of small range, the cavity structure can play the work of water conservancy diversion to the charge air flow that will enter the second air inlet 11
With, by chaotic air-flow specification it is to be approximately towards the direction of the second air inlet 11, and the softening intensity of air-flow, thus reduce
Even eliminate the inflow noise of the second air inlet 11.
It is maximum to be additionally, since the volume that motor noise goes out by the second air inlet direct projection, so, when the second air inlet
Outer shroud reflection can be formed when setting drainage hood 10, also to the motor noise by the second air inlet direct projection out and is absorbed, play
Good insulating effect, thus significantly reduces the motor noise for outwards spreading out of.
On the projecting direction of the second air inlet, the spacing of the air inlet of drainage hood 10 and second is preferably greater than 8mm, thus makes
Above-mentioned cavity body structure has enough guide spaces, it is sufficient to guiding is integrally formed to charge air flow.
It is preferred that setting acoustical cotton on drainage hood 10, be can be set in the inner side and outer side of drainage hood 10, to strengthen drainage
10 pairs of assimilation effects of motor noise of cover.In general, the drainage hood 10 can be greatly reduced the complete machine noise of hand dryer.
In conjunction with shown in Fig. 3 to Fig. 5, above-mentioned drainage hood 10 can be by a first half-shell 8 and a structure of the second half-shell 9
Into；First half-shell 8 is formed at the periphery of the second air inlet；Second half-shell 9 is detachably connected with first half-shell 8, to limit one
The individual cavity body structure with opening, the second air inlet is housed by the cavity body structure.
In addition, drainage hood 10 is open by it, one end bore for extremely being connected with the second air inlet 11 is tapered into, i.e. drainage hood
The area of 10 upper sheds is bigger than the aperture area of one end that drainage hood 10 is connected with the second air inlet 11, and in airintake direction
On, the inner space of drainage hood 10 is diminishing, that is to say, that drainage hood 10 plays a work gathered to charge air flow
With, the charge air flow that will enter the second air inlet 11 is more concentrated, reduce in the outer confusion for being formed of the second air inlet 11
Air-flow, reduce further pneumatic noise.
One end that drainage hood 10 is connected with the second air inlet 11 is preferably globoidal structure 81, the part of globoidal structure 81 be with
The part that the region of second air inlet 11 is mutually connected, influences maximum to the stream condition for entering the second air inlet 11, but its cambered surface
The shape charge air flow specification that is more beneficial for will go into the second air inlet 11 be perpendicular to the side of the second air inlet 11
To, charge air flow is more smoothly entered the second air inlet 11, thus can further reduce pneumatic noise.
Embodiment two
A kind of hand dryer that the utility model embodiment two is provided, including the possible implementation of any one of embodiment one
Mode, and following improvement has also been done on its basis：
Referring again to Fig. 1, the opening of drainage hood 10 is connected by air intake passage 6 with the first air inlet 3, and the air intake passage 6 can
To be formed at a channel design in housing 1, baffle plate 12 is provided with air intake passage 6, baffle plate 12 is interior with air intake passage 6
Have between wall for by the gap of air-flow, the shape in the gap can be, but not limited to be annular, crescent, polygon etc.,
As long as can pass through charge air flow, but preferably annular, it is ensured that air-flow uniformly through.
Due to the presence of the baffle plate 12, on the one hand, when the noise that motor 5 sends outwards is propagated along air intake passage 6, can receive
To the stop of the baffle plate 12, part motor noise is reflected back, and part motor noise can also be absorbed by baffle plate 12, so that passing
The noise outside the first air inlet 3 is multicast to substantially reduce；Another convenience, the air-flow entered by the first air inlet 3 can be subject to baffle plate
12 stop, charge air flow is first disperseed, and by being polymerized again behind gap, this process reintegrates air-flow, and script is present disorderly
The air-flow of stream is integrated into the more homogeneous air-flow of air flow direction, and the oscillation intensity of air-flow can also weaken, and thus make charge air flow
The noise for itself producing also is reduced.
It follows that the setting of the baffle plate 12 can not only cut down motor noise outwards spreading out of, air inlet gas can also be reduced
Stream noise produced in itself, thus significantly reduces complete machine noise on the whole.
In addition, the bearing of trend that baffle plate 12 is preferably normal to air intake passage 6 is set, i.e., air intake passage 6 is in the institute of baffle plate 12
Cross section at place position overlaps with the place plane of baffle plate 12.So set and be advantageous in that, on the one hand, due to motor 5
The noise for sending is mainly and is outwards spread out of along air intake passage 6, so when motor noise is propagated at the position of baffle plate 12, motor
Noise is impinged perpendicularly on baffle plate 12, and now baffle plate 12 is to the reflectivity highest of motor noise, i.e., to the resistance of motor noise
Gear best results.On the other hand, because baffle plate 12 is perpendicular to the direction of charge air flow, so working as the vertical directive of charge air flow
After on baffle plate 12, meeting uniform four is scattered and, and without being concentrated to side, thus can avoid forming local height when by gap
Fast air-flow, and then the generation of squeal-noise can be avoided.
The cross sectional shape of baffle plate 12 and air intake passage 6 is preferably all circle, and, edge and the air intake passage 6 of baffle plate 12
Inwall between formed gap be preferably annular, that is to say, that the different circumferential position even widths in the gap, do not exist
Situations such as local slot, thus can make the dispersed charge air flow for coming again uniformly by the annular gap, will not produce
The sharp noise of life.It should be noted that the cross sectional shape of baffle plate 12 and air intake passage 6 and circle is not limited to, for example also
Can make the shape of baffle plate 12 be adapted with the cross sectional shape of air intake passage 6, can also make to form uniform annular therebetween
Gap.
Further, the spacing between the inwall of the edge of baffle plate 12 and the first air intake passage 6 is preferably 1~5cm, more excellent
2~3cm is elected as, thus, while ensureing that the annular gap uniformly can pass through charge air flow, additionally it is possible to ensure enough
Air inflow, and the gap of the width is also not easy to make air-flow to form dither, i.e., will not send more sharp noise.
Baffle plate 12 is fixedly connected with air intake passage 6, and is preferably made of the stronger material of rigidity, in case baffle plate 12 exists
Made a noise because of vibration in high velocity air, while will not also disturb charge air flow.
Baffle plate 12 is provided with acoustical cotton towards the side of the first air inlet 3, and during air inlet, charge air flow is beaten first
Baffle plate 12 towards the side of the first air inlet 3, subsequent charge air flow can fit baffle plate 12 side surface, from center to marginal flow
It is dynamic, and acoustical cotton is provided with towards the side of the first air inlet 3 due to baffle plate 12, so charge air flow is actually in the table of baffle plate 12
Flowed in the acoustical cotton in face, and baffle plate 12 is towards the portion that the side of the first air inlet 3 is that it mainly comes in contact with charge air flow
Point, so the setting of the acoustical cotton can be greatly reduced the friction noise before charge air flow and baffle plate 12.
Further, it is preferably between acoustical cotton and baffle plate 12 and is detachably connected, because acoustical cotton is while sound-absorbing,
Certain interception function can be played to dust in charge air flow etc., therefore be easily mingled with largely by acoustical cotton after long-term use
Dust, can so influence sound-absorbing effect and by property, and after being set to be detachably connected between acoustical cotton and baffle plate 12, just may be used
Periodically acoustical cotton is changed, the sound-absorbing effect of acoustical cotton is ensure that with this.
Can also be and be provided with acoustical cotton in the outsourcing of baffle plate 12, that is to say, that baffle plate 12 is except in the first air inlet 3 of direction
Side is present outside acoustical cotton, and in its edge and dorsad the side of the first air inlet 3 also is provided with acoustical cotton；It is present in baffle plate 12
The acoustical cotton of edge can play sound absorption when charge air flow bypasses 12 edge of baffle plate, further improve sound-absorbing effect
Really；And the acoustical cotton for being present in the dorsad side of the first air inlet 3 of baffle plate 12 can absorb part motor noise, thus further
Reduce complete machine noise.The acoustical cotton can be that Whole-dismountable is sheathed on baffle plate 12, be convenient for changing.
All in all, above-mentioned baffle plate 12 and drainage hood 10 can be formed well to charge air flow noise and motor noise respectively
Inhibition, therefore when the two is applied in combination, can significantly reduce complete machine noise.
In addition, when drainage hood 10 and baffle plate 12 are applied in combination, its noise reduction is but not only simple superposition, because entering
After gas air-flow is when by the gap between baffle plate 12 and air intake passage, the trend gathered to centre can be naturally produced,
During now air-flow is in 10 in drainage hood, and space structure inside drainage hood just with the flow tendency phase of internal gas flow itself
Adapt to, therefore rectification effect is more preferably, and kuppe 10 is maintained the homogeneity of air-flow again by the guide functions of itself,
Until most air-flow sends into the second air inlet 11 at last.
It can be seen that, kuppe 10 can play the effect for more preferably reducing pneumatic noise by the cooperation with baffle plate 12.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model know-why is not departed from, some improvement and replacement can also be made, these change
Enter and replace also to should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of hand dryer, it is characterised in that including housing and the motor being arranged in the housing；The housing is provided with
One air inlet, the motor has the second air inlet；Drainage hood is covered with outside second air inlet, the drainage hood is provided with
Opening, the opening connects with first air inlet.
2. hand dryer according to claim 1, it is characterised in that the drainage hood by with the opening to described second
One end bore of air inlet connection is tapered into.
3. hand dryer according to claim 2, it is characterised in that the drainage hood connected with second air inlet one
It is globoidal structure to hold.
4. hand dryer according to claim 1, it is characterised in that the drainage hood is provided with acoustical cotton.
5. hand dryer according to claim 1, it is characterised in that described on the projecting direction of second air inlet
Drainage hood is more than 8mm with the spacing of second air inlet.
6. hand dryer according to claim 1, it is characterised in that the drainage hood includes first half-shell and the second half-shell；
The first half-shell is formed at the periphery of second air inlet；Second half-shell is detachably connected with the first half-shell,
To limit a cavity body structure with the opening, second air inlet is contained in the cavity body structure, described to open
Mouth is connected with first air inlet.
7. the hand dryer according to any one of claim 1 to 6, it is characterised in that the opening passes through air intake passage and institute
State the connection of the first air inlet；Baffle plate is provided with the air intake passage, is had between the baffle plate and the inwall of the air intake passage
For the gap by air-flow.
8. according to claim 7 to described hand dryer, it is characterised in that extension of the baffle plate perpendicular to the air intake passage
Direction.
9. according to claim 7 to described hand dryer, it is characterised in that the gap is overall structure in a ring.
10. according to claim 7 to described hand dryer, it is characterised in that the baffle plate towards first air inlet one
Side is provided with acoustical cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620683757.XU CN206239309U (en) | 2016-06-29 | 2016-06-29 | Hand dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620683757.XU CN206239309U (en) | 2016-06-29 | 2016-06-29 | Hand dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206239309U true CN206239309U (en) | 2017-06-13 |
Family
ID=58997415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620683757.XU Active CN206239309U (en) | 2016-06-29 | 2016-06-29 | Hand dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206239309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105962827A (en) * | 2016-06-29 | 2016-09-28 | 广东美的环境电器制造有限公司 | Hand dryer |
-
2016
- 2016-06-29 CN CN201620683757.XU patent/CN206239309U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105962827A (en) * | 2016-06-29 | 2016-09-28 | 广东美的环境电器制造有限公司 | Hand dryer |
| CN105962827B (en) * | 2016-06-29 | 2020-04-10 | 广东美的环境电器制造有限公司 | Hand drier |
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