CN205909465U - Air -out device and have indoor floor air conditioner of this air -out device - Google Patents
Air -out device and have indoor floor air conditioner of this air -out device Download PDFInfo
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- CN205909465U CN205909465U CN201620626844.1U CN201620626844U CN205909465U CN 205909465 U CN205909465 U CN 205909465U CN 201620626844 U CN201620626844 U CN 201620626844U CN 205909465 U CN205909465 U CN 205909465U
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- Prior art keywords
- air
- noise reduction
- out passage
- exhaust apparatus
- upper wall
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Abstract
The utility model provides an air -out device and have indoor floor air conditioner of this air -out device, the air -out device is including the air -out cavity that has the air outlet, the air -out cavity includes air -out passageway upper wall and air -out passageway lower wall air -out passageway upper wall distributes and has seted up a plurality of holes of making an uproar that fall, is the aperture that falls the hole of making an uproar 3 6mm. The utility model discloses it is poor that the technical problem that will solve lies in in the air conditioning among the prior art that the the noise reduction effect of the structure of making an uproar falls in the cabinet -type air conditioner, and then provide the floor standing air conditioner ware that the noise reduction effect is better. Specially adapted air condition field, specifically speaking is an air -out device and have indoor floor air conditioner of this air -out device.
Description
Technical field
This utility model is related to a kind of filed of air conditioning.Specifically a kind of exhaust apparatus and there are this exhaust apparatus
Indoor vertical air-conditioner.
Background technology
Air-conditioner be make room nice and cool, warm using air cooling, heater or air purifier or air cleaning from
And make internal medium equipment preferably.
With the raising of people's living standard, people's also more and more higher of the requirement to noise.In order to solve noise problem, in
State patent documentation cn103383140a discloses a kind of indoor air conditioner cabinet denoising structure, indoor air conditioner cabinet and air-conditioner, its
In its indoor air conditioner cabinet denoising structure include indoor machine housing and the air outlet being opened on described indoor machine housing, institute
State and in indoor machine housing, be provided with the exhausting plate that edge is connected with the inwall of described indoor machine housing, in described exhausting plate in the back of the body
Enclose formation one cavity from described air outlet side with described indoor unit casing, described exhausting plate is provided with multiple microperforated panels and inhales
Acoustic form.
Above-mentioned patent documentation adopts Helmholtz's principle, when that is, air-conditioning noise is propagated in media as well, when noise sound wave enters
When in the micropunch that inside is interconnected, vibration pneumatic and the hole wall of micropunch that noise drives produce friction, during this
The energy of noise is converted into heat energy, thus reduces noise.And the resonance in frequency of sound wave and microperforated panel resonance sound-absorbing chamber
When frequency is consistent, will resonate, the air at microperforated panel aperture produces intense vibration friction, reduce the effect of noise more
Substantially.
Though above-mentioned patent can partly solve the problems, such as noise, the perforation on the microperforated panel of prior art is thin and close, leads
Cause this denoising structure noise reduction undesirable.Trace it to its cause, be because the too small perforation of yardstick is unfavorable for the entrance of sound wave, lead
Most of sound wave is caused not affected by these denoising structures.
Utility model content
For this reason, technical problem to be solved in the utility model is indoor air conditioner cabinet denoising structure of the prior art
Noise reduction poor, and then provide a kind of more preferable room air conditioner of noise reduction.
For solving above-mentioned technical problem, a kind of exhaust apparatus of the present utility model, it includes the air-out chamber with air outlet
Body, described air-out cavity includes air-out passage upper wall and air-out passage lower wall, if offering in the distribution of described air-out passage upper wall
Dry noise reduction hole, the aperture in described noise reduction hole is 3-6mm.
Described noise reduction hole is opening towards the blind hole in described air-out cavity.
The aperture in described noise reduction hole is 4mm.
Described air outlet is in 360 degree of settings.
Described air-out passage upper wall is to be rotated 360 degrees around vertical axis by the arc bus in port of export decurvation to be formed
Curved surface, described air-out passage lower wall is connected by the arc of or decurvation horizontal-extending in the port of export with described arc
The bus of straightway composition rotate 360 degrees the curved surface of formation around vertical axis and its lower end is connected with blower fan air-out passage.
Described air-out passage upper wall air opening end tangent line with the spacing of described air-out passage lower wall air opening end tangent line is
40mm.
Described air-out passage upper wall is bent downwardly and its port of export tangent line is 0-20 degree with horizontal angle.
The air opening end of described air-out cavity is provided with some wind blades.
Described air-out passage upper wall is provided with a noise reduction cavity, and described noise reduction hole is through hole, described noise reduction hole and described noise reduction
Cavity connects.
Described noise reduction cavity body be formed at described air-out passage upper wall and close described air-out passage upper wall top closure it
Between.
Described top closure is arcwall face.
It is provided with acoustical cotton inside described top closure.
Described noise reduction hole is distributed and 360 degree of array distribution along the arc bus of described air-out passage upper wall.
Described noise reduction hole is uniformly distributed along described arc bus.
A kind of indoor vertical air-conditioner, it includes shell body, and described shell body top is provided with any of the above-described air-out dress
Put.
Air-out passage lower wall described in described shell body top molding, centrifugal blower and heat exchanger are arranged on described air-out passage
In described inner housing below lower wall, described blower fan air-out passage is connected with described inner housing.
It is formed with ring air intake area, described ring air intake area is led to blower fan air intake between described shell body and described inner housing
Road connects.
Described shell body profile is vase shape.
Technique scheme of the present utility model has advantages below compared to existing technology,
1., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described exhaust apparatus include having
The air-out cavity of air outlet, described air-out cavity includes air-out passage upper wall and air-out passage lower wall, on described air-out passage
Wall distribution offers some noise reduction holes, and the aperture in described noise reduction hole is 3-6mm.I.e. prior art is broken through in aperture of the present utility model
Fixing thinking, by increase noise reduction hole realize reduce noise purpose, beneficial to the entrance of sound wave, most of sound wave can be subject to
The impact of these denoising structures；Additionally, the perforated microstructure processing difficulties of prior art, noise reduction hole described in the utility model holds
Easy processing and noise reduction is more preferable.The aperture in preferably described noise reduction hole is 4mm, and noise reduction is optimal.
2., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described air outlet sets in 360 degree
Put, exhaust apparatus described in the utility model employ 360 degree of annular air structures, realize air-supply no dead angle, accelerate room air
Convection current.
3., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described air-out passage upper wall is served as reasons
Rotate 360 degrees the curved surface of formation around vertical axis in the arc bus of port of export decurvation, described air-out passage lower wall by
The port of export is horizontal-extending or the bus of the arc of decurvation and the straightway composition being connected with described arc is around vertical axises
Line rotates 360 degrees the curved surface of formation and its lower end is connected with blower fan air-out passage, and that is, air-out is more smooth, realize further noise reduction and
The little effect of air-flow turbulence.
4. in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described air-out passage upper wall air-out
Mouth end tangent line is 40mm with the spacing of described air-out passage lower wall air opening end tangent line, air-out passage upper wall is limited
Fixed, air-out is more smooth, realizes noise reduction and the little effect of air-flow turbulence further.
5., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described air-out passage upper wall is downward
Bending and its port of export tangent line and horizontal angle are 0-20 degree, air-out passage upper wall are defined, and this practicality is new
Open Side Down tilts for type air conditioner wind outlet, is conducive to warm braw to be sent to ground, weakens indoor temperature layered effect under heating mode.
6. in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, the air outlet of described air-out cavity
End is provided with some wind blades, and achievable wind direction is adjustable.
7., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described air-out passage upper wall is provided with
One noise reduction cavity, described noise reduction hole is connected with described noise reduction cavity, that is, this utility model while using noise reduction hole noise reduction again
It has been superimposed and make use of Helmholtz's principle to carry out noise reduction, noise reduction has been strengthened further.
8., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described noise reduction cavity body is formed at institute
State between air-out passage upper wall and the top closure closing described air-out passage upper wall, structure is simpler, and outward appearance is more attractive in appearance.
9., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described top closure is arc
Face, outward appearance, closer to vase top shape, reaches the effect of aesthetic appeal.
10., in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, set inside described top closure
It is equipped with acoustical cotton, further increase the effect of noise reduction.
11. in exhaust apparatus described in the utility model and described indoor vertical air-conditioner, described noise reduction hole along described go out
The arc bus distribution of wind channel upper wall and 360 degree of array distribution；I.e. noise reduction hole of the present utility model is from bottom to top to external diffusion
Formula is distributed, and integrally assumes the divergence expression arrangement of string string, from blower fan air-out passage wind out along the air-out chamber body surface of annular
Move in face, contact area is also stepped up, and a part of air-out carries out noise reduction by noise reduction hole, and another part air-out is still along air-out
Channel upper wall travels forward, and the aerodynamic noise of discrete air-out also makes wind out simultaneously stagger in time simultaneously, enters
And realize that air outlet noise is little, and the little effect of air-flow turbulence, the effect of noise reduction 0.8db (a) can be reached.
12. in indoor vertical air-conditioner described in the utility model, under air-out passage described in described shell body top molding
Wall, centrifugal blower and heat exchanger are arranged in the inner housing of below described air-out passage lower wall, described blower fan air-out passage and institute
State inner housing connection, structure is compacter, simpler.
13., in indoor vertical air-conditioner described in the utility model, are formed between described shell body and described inner housing
Ring air intake area, described ring air intake area is connected with blower fan air intake passage, and circular air inlet effect is good, further indoor temperature is adjusted
Section is fully.
14. in indoor vertical air-conditioner described in the utility model, described shell body profile be vase shape, with vase outside
Shape is disposed within, makes full use of upholstery structure, has reached the effect strengthening perception simultaneously.
Brief description
In order that content of the present utility model is more likely to be clearly understood, it is embodied as below according to of the present utility model
Example simultaneously combines accompanying drawing, this utility model is described in further detail, wherein
Fig. 1 is exhaust apparatus axial direction section view wire frame diagram described in the utility model；
Fig. 2 is the c portion enlarged drawing of Fig. 1；
Fig. 3 is the axonometric chart of Fig. 1；
Fig. 4 is the indoor vertical air-conditioner with exhaust apparatus described in the utility model；
Fig. 5 is noise reduction cavity axonometric chart described in the utility model.
In figure reference is expressed as: 1- air-out cavity, 11- air-out passage upper wall, 111- noise reduction hole, 12- air-out passage
Lower wall, 121- arc, 122- straightway, 13- air outlet, 2- noise reduction cavity, 21- top closure, 3- indoor vertical air-conditioner,
31- shell body, 32- inner housing, 33- ring air intake area, 34- blower fan air-out passage, a- angle.
Specific embodiment
Fig. 1 show exhaust apparatus described in the utility model axial direction cross-sectional schematic, and described exhaust apparatus include having
The air-out cavity 1 in air port 13, the described air outlet of this enforcement 13 is in 360 degree of settings, and described air-out cavity 1 lower end is led to blower fan air-out
Road 34 connects, and described air-out cavity 1 includes air-out passage upper wall 11 and air-out passage lower wall 12, goes out described in setting in the present embodiment
Wind channel upper wall 11 is to rotate 360 degrees, around vertical axis, the curved surface being formed by the arc bus in port of export decurvation, such as Fig. 3
Shown, described air-out passage lower wall 12 by or decurvation horizontal-extending in the port of export arc 121 and with described arc
The bus of straightway 122 composition of 121 connections rotates 360 degrees the curved surface of formation around vertical axis and its lower end is led to blower fan air-out
Road 34 connects, and offers some noise reduction holes 111 in the distribution of described air-out passage upper wall 11, the aperture in described noise reduction hole 111 is 3-
6mm.Arranging described noise reduction hole 111 in the present embodiment is through hole, and its aperture is 4mm, and aperture of the present utility model is broken through existing
The fixing thinking of technology, realizes reducing the purpose of noise by increasing noise reduction hole 111, beneficial to the entrance of sound wave, most of sound
Ripple can be affected by these denoising structures；Additionally, the perforated microstructure processing difficulties of prior art, fall described in the utility model
Hole 111 of making an uproar is easily worked and noise reduction is more preferable.Exhaust apparatus described in the utility model employ 360 degree of annular air knots
Structure, realizes air-supply no dead angle, accelerates indoor air convection.I.e. air-out is more smooth, realizes noise reduction further and air-flow turbulence is little
Effect.
As disposable embodiment, the present embodiment on the basis of above-described embodiment, replace by the aperture in described noise reduction hole 111
It is changed to 6mm.
Further, the present embodiment is on the basis of above-described embodiment, described air-out passage upper wall 11 air opening end tangent line with
The spacing of described air-out passage lower wall 12 air opening end tangent line is 40mm, air-out passage upper wall 11 is defined, air-out
More smooth, realize noise reduction and the little effect of air-flow turbulence further.
Further, on the basis of above-described embodiment, described air-out passage upper wall 11 is bent downwardly and it goes out for the present embodiment
Mouth end tangent line is 0 degree with horizontal angle a, as shown in Fig. 2 being defined to air-out passage upper wall 11, this practicality is new
Open Side Down tilts for type air conditioner wind outlet 13, is conducive to warm braw to be sent to ground, weakens indoor temperature layering effect under heating mode
Really.
As disposable embodiment, the present embodiment on the basis of above-described embodiment, described air-out passage upper wall 11 to
Lower bending and its port of export tangent line and horizontal angle a replace with 15 degree.
Further, the present embodiment is on the basis of above-described embodiment, and the air opening end of described air-out cavity 1 is provided with some
Wind blade, achievable wind direction is adjustable.
As disposable embodiment, the present embodiment on the basis of above-described embodiment, further, by described noise reduction hole
111 replace with opening towards the blind hole in described air-out cavity 1, form on air-out passage upper wall 11 some to away from described
The counterbore of air-out cavity 1 direction depression.
Fig. 4 show the indoor vertical air-conditioner 3 with exhaust apparatus described in above-described embodiment, goes out described in the present embodiment
On the basis of above-described embodiment, described air-out passage upper wall 11 is provided with a noise reduction cavity 2 to wind apparatus, drops described in the present embodiment
Make an uproar hole 111 for through hole, described noise reduction hole 111 is connected with described noise reduction cavity 2, as shown in figure 5, noise reduction cavity described in the present embodiment
Body 2 is formed between described air-out passage upper wall 11 and the top closure 21 closing described air-out passage upper wall (11), i.e. air-out
The air-out passage upper wall 11 of device is overlapped with the lower wall of noise reduction cavity 2, and structure is simpler；Additionally, this utility model is utilizing
Be superimposed while the noise reduction of noise reduction hole make use of Helmholtz's principle to carry out noise reduction again, and noise reduction is strengthened further；This enforcement
Top closure 21 described in example is arcwall face, and outward appearance, closer to vase top shape, reaches the effect of aesthetic appeal.
As disposable embodiment, the present embodiment on the basis of above-described embodiment, replace by the aperture in described noise reduction hole 111
It is changed to 3mm, described air-out passage upper wall 11 is bent downwardly and its port of export tangent line replaces with 20 degree with horizontal angle a；Institute
State top closure 21 and replace with plane；Described air outlet 13 replaces setting, air-out passage upper wall described in the present embodiment in 180 degree
11 replace with technical scheme of the prior art.
Further, the present embodiment, on the basis of above-described embodiment, is provided with acoustical cotton inside described top closure 21, enters
One step improves the effect of noise reduction；Air-out passage upper wall described in the present embodiment 11 is bent downwardly and its port of export tangent line and level
The angle a of line replaces with 10 degree.
Further, on the basis of above-described embodiment, described noise reduction hole 111 is along described air-out passage upper wall 11 for the present embodiment
Arc bus be uniformly distributed and 360 degree of array distribution；I.e. noise reduction hole 111 of the present utility model from bottom to top outwards diffusion type divide
Cloth, integrally assumes the divergence expression arrangement of string string, from blower fan air-out passage 34 wind out along air-out cavity 1 surface of annular
Motion, contact area is also stepped up, and a part of air-out carries out noise reduction by noise reduction hole, and another part air-out is still led to along air-out
Road upper wall 11 travels forward, and the aerodynamic noise of discrete air-out also makes wind out simultaneously stagger in time simultaneously, enters
And realize that air outlet 13 noise is little, and the little effect of air-flow turbulence, the effect of noise reduction 0.8db (a) can be reached；Described air-out passage
Upper wall 11 is bent downwardly and its port of export tangent line replaces with 13 degree with horizontal angle a.
Further, the present embodiment is on the basis of above-described embodiment, in described indoor vertical air-conditioner 3, described shell body
It is additionally provided with inner housing 32 in 31, between described inner housing 32 and described shell body 31, form ring air intake area 33, described ring
Air intake area 33 connects extraneous and described inner housing 32, and centrifugal blower and heat exchanger are arranged in described inner housing 32, described blower fan
Air-out passage 34 is connected with described inner housing 32, defines ring air intake area 33 so that air inlet effect is good, further to Indoor Temperature
Degree is adjusted fully.
Further, on the basis of above-described embodiment, described shell body 31 profile is vase shape to the present embodiment, this shell
The part of bottom outward bulge can optimize the internal placement space placing blower fan and heat exchanger and position, additionally, being put with vase profile
In interior, make full use of upholstery structure, reach the effect strengthening perception simultaneously.
Therefore, indoor cabinet type air conditioner 3 and indoor decoration vase are integrated by above-described embodiment, solve air-conditioning and take sky
Between, the problem of sight equation, employ new annular air and outlet denoising structure simultaneously, enhance the energy adjusting indoor temperature
Power, reduces air conditioner noises.During use, air-flow enters heat exchanger and blower fan through circular air inlet area 33, from blower fan air-out after acceleration
Passage 34 projects at a high speed, flows through outlet cavity 1 and air-out passage upper wall 11, gets in space from air outlet 13.Wherein, air-flow
When flowing through the noise reduction hole 111 of air-out passage upper wall 11, in air-flow, local tubulence energy can be transferred to noise reduction cavity via noise reduction hole 111
The interior volume of body, local tubulence energy is converted into static energy, thus the overall less turbulence reducing air-out air-flow, reaches rectification
The purpose of noise reduction, also can absorb, using acoustical cotton, the noise producing further.Simulation result shows, this structure can make exit flow
Noise decline 0.8db (a).Meanwhile, air-conditioner air outlet 13 is downward-sloping, and angle and horizontal plane angle are that air-out passage upper wall goes out
Mouth end tangent line is controlled at 0-20 ° with horizontal angle, to be conducive to air-flow to blow to ground, so can solve under heating condition
Warm braw cannot be blown downwards or the downward inadequate problem of air supplying distance due to natural buoyancy effect.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among the protection domain created still in this utility model.
Claims (17)
1. a kind of exhaust apparatus, it includes the air-out cavity (1) with air outlet (13), and described air-out cavity (1) includes air-out
Channel upper wall (11) and air-out passage lower wall (12) are it is characterised in that offer some falls in described air-out passage upper wall (11)
Make an uproar hole (111), the aperture of described noise reduction hole (111) is 3-6mm.
2. according to claim 1 exhaust apparatus it is characterised in that described noise reduction hole (111) be opening towards described air-out
Blind hole in cavity (1).
3. according to claim 1 exhaust apparatus it is characterised in that described noise reduction hole (111) aperture be 4mm.
4. according to claim 1 exhaust apparatus it is characterised in that described air outlet (13) be in 360 degree arrange.
5. according to claim 4 exhaust apparatus it is characterised in that described air-out passage upper wall (11) is by port of export court
The arc bus of lower bending rotates 360 degrees the curved surface of formation around vertical axis, and described air-out passage lower wall (12) is by the port of export
The bus that the arc (121) of horizontal-extending or decurvation and the straightway (122) being connected with described arc (121) are formed
Rotate 360 degrees the curved surface of formation around vertical axis and its lower end is connected with blower fan air-out passage (34).
6. according to claim 5 exhaust apparatus it is characterised in that described air-out passage upper wall (11) air opening end tangent line with
The spacing of described air-out passage lower wall (12) air opening end tangent line is 40mm.
7. according to claim 5 exhaust apparatus it is characterised in that described air-out passage upper wall (11) is bent downwardly and it goes out
Mouth end tangent line and horizontal angle (a) are 0-20 degree.
8. according to claim 5 exhaust apparatus it is characterised in that described air-out cavity (1) if air opening end be provided with
Dry wind blade.
9. according to claim 1, the arbitrary described exhaust apparatus of 3-8 it is characterised in that described air-out passage upper wall (11) is provided with one
Noise reduction cavity (2), described noise reduction hole (111) is through hole, and described noise reduction hole (111) is connected with described noise reduction cavity (2).
10. according to claim 9 exhaust apparatus it is characterised in that described noise reduction cavity (2) is formed at described air-out passage
Between upper wall (11) and the top closure (21) closing described air-out passage upper wall (11).
11. according to claim 10 exhaust apparatus it is characterised in that being provided with sound-absorbing inside described top closure (21)
Cotton.
12. according to claim 9 exhaust apparatus it is characterised in that described noise reduction hole (111) is along described air-out passage upper wall
(11) arc bus distribution and 360 degree of array distribution.
13. according to claim 12 exhaust apparatus it is characterised in that described noise reduction hole (111) is equal along described arc bus
Even distribution.
A kind of 14. indoor vertical air-conditioners, it includes shell body (31) it is characterised in that setting at described shell body (31) top
It is equipped with the arbitrary described exhaust apparatus of claim 1-13.
15. according to claim 14 indoor vertical air-conditioner it is characterised in that described in described shell body (31) top molding
Air-out passage lower wall (12), centrifugal blower and heat exchanger are arranged on described air-out passage lower wall (12) inner housing (32) below
In, described blower fan air-out passage (34) is connected with described inner housing (32).
16. according to claim 15 indoor vertical air-conditioner it is characterised in that described shell body (31) and described inner housing
(32) it is formed with ring air intake area (33) between, described ring air intake area (33) is connected with blower fan air intake passage.
17. according to claims 14 or 15 or 16 indoor vertical air-conditioner it is characterised in that described shell body (31) profile
For vase shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626844.1U CN205909465U (en) | 2016-06-21 | 2016-06-21 | Air -out device and have indoor floor air conditioner of this air -out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620626844.1U CN205909465U (en) | 2016-06-21 | 2016-06-21 | Air -out device and have indoor floor air conditioner of this air -out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205909465U true CN205909465U (en) | 2017-01-25 |
Family
ID=57813104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620626844.1U Expired - Fee Related CN205909465U (en) | 2016-06-21 | 2016-06-21 | Air -out device and have indoor floor air conditioner of this air -out device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205909465U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928169A (en) * | 2016-06-21 | 2016-09-07 | 珠海格力电器股份有限公司 | Air outlet device and indoor vertical type air conditioner provided with same |
| CN111306759A (en) * | 2020-03-31 | 2020-06-19 | 宁波奥克斯电气股份有限公司 | Noise reduction wind scooper and air purification device |
-
2016
- 2016-06-21 CN CN201620626844.1U patent/CN205909465U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928169A (en) * | 2016-06-21 | 2016-09-07 | 珠海格力电器股份有限公司 | Air outlet device and indoor vertical type air conditioner provided with same |
| CN111306759A (en) * | 2020-03-31 | 2020-06-19 | 宁波奥克斯电气股份有限公司 | Noise reduction wind scooper and air purification device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |