CN109737505A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN109737505A CN109737505A CN201811560173.3A CN201811560173A CN109737505A CN 109737505 A CN109737505 A CN 109737505A CN 201811560173 A CN201811560173 A CN 201811560173A CN 109737505 A CN109737505 A CN 109737505A
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- China
- Prior art keywords
- wind deflector
- flow fan
- air conditioner
- air
- fan blade
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Abstract
The invention discloses a kind of air conditioners.The air conditioner includes the first through-flow fan blade (2) and the second through-flow fan blade (3) of shell (1) and setting in shell (1), first through-flow fan blade (2) and the second through-flow fan blade (3) axially spaced setting, dual-axle motor (4) are provided in interval, the both ends of dual-axle motor (4) are drivingly connected with two through-flow fan blades respectively, it is provided with air outlet on shell (1), is provided with air deflection assemblies at air outlet.Air conditioner according to the present invention is capable of increasing the blowing range of air conditioner, fast implements room temperature adjusting, improves room temperature uniformity.
Description
Technical field
The present invention relates to air-conditioning technique fields, in particular to a kind of air conditioner.
Background technique
Existing air conditioner room unit, general to be blown using single through-flow fan blade, space biggish for indoor length
For, it is influenced by through-flow fan blade length, blowing range is small, and air output is small, therefore is easy to cause indoor air-supply uneven, indoor
Temperature regulation effect is poor, and temperature uniformity is poor, reduces the usage experience of user.
Summary of the invention
The purpose of the present invention is to propose to a kind of air conditioners, are capable of increasing the blowing range of air conditioner, fast implement Indoor Temperature
Degree is adjusted, and improves room temperature uniformity.
According to an aspect of the invention, there is provided a kind of air conditioner, including shell and setting are passed through in shell intracorporal first
Fan blade and the second through-flow fan blade, the first through-flow fan blade and the axially spaced setting of the second through-flow fan blade are flowed, is provided in interval double
Spindle motor, the both ends of dual-axle motor are drivingly connected with two through-flow fan blades respectively, are provided with air outlet on shell, are set at air outlet
It is equipped with air deflection assemblies.
Preferably, spacing board is provided between two through-flow fan blades, shell forms the first wind spaced apart by spacing board
Road and the second air duct, the corresponding first through-flow fan blade setting in the first air duct, the corresponding second through-flow fan blade setting in the second air duct, wind deflector
Component includes left wind deflector and right wind deflector, and corresponding first through-flow fan blade of left wind deflector is arranged in the first air duct, right wind deflector
Corresponding second through-flow fan blade is arranged in the second air duct.
Preferably, left wind deflector drive connection has the first wind guide motor, and right wind deflector drive connection has the second wind guide motor,
The respective independent control of first wind guide motor and the second wind guide motor.
Preferably, skeleton is provided in shell, left wind deflector and right wind deflector are rotatably arranged on skeleton respectively.
Preferably, pin shaft is provided on left wind deflector, left wind deflector is rotatably connected on skeleton by pin shaft；And/or it is right
Pin shaft is provided on wind deflector, right wind deflector is rotatably connected on skeleton by pin shaft.
Preferably, it is provided with sliding rail on left wind deflector, sliding block is provided on sliding rail, the end of sliding block is provided with pin shaft, leads
The locating part for limiting the sliding position of sliding block is additionally provided on aerofoil.
Preferably, the two sides of sliding block are provided with protrusion, and the two sides respective protrusions of sliding rail are provided with elastic fastening hook, elastic fastening hook
It is arranged on the sliding position of sliding block, and to convexing to form backstop.
Preferably, the first limit plate, the second limit plate and stop block are additionally provided on left wind deflector, the first limit plate and only
Installation gap is formed between block, when sliding block is in sliding end, pin shaft is threaded through in the first limit plate, and sells the tip of the axis
At stop block, the one end of sliding block far from the first limit plate, and the fortune of the other direction to sliding block is arranged in the second limit plate
It is dynamic to form limit.
Preferably, sliding block is multiple, and is arranged along the length direction interval of left wind deflector.
Preferably, the driving end of left wind deflector is provided with axle sleeve, and axle sleeve is threaded through on skeleton, left wind deflector by axle sleeve with
First wind guide motor is drivingly connected.
Air conditioner of the invention, including shell and setting be in intracorporal first through-flow fan blade of shell and the second through-flow fan blade, the
One through-flow fan blade and the axially spaced setting of the second through-flow fan blade are provided with dual-axle motor, the both ends point of dual-axle motor in interval
It is not drivingly connected with two through-flow fan blades, is provided with air outlet on shell, is provided with air deflection assemblies at air outlet.By in sky
At least two through-flow fan blades of axially spaced setting in device are adjusted, the axial length of air conditioner is capable of increasing, increases sending for air conditioner
Wind length and air-supply region increase the blowing range of air conditioner, realize the quick adjusting of room temperature, meet large space Indoor Temperature
Degree is adjusted, without that can save cost, while can effectively improve indoor temperature distribution in the multiple air conditioners of indoor setting
Uniformity.Simultaneously as providing power output to the through-flow fan blade of two sides simultaneously using a dual-axle motor, therefore can either
Space is saved, and the use of motor can be reduced, reduces cost.Due to being provided with air deflection assemblies at the air outlet of shell, because
This can realize vertical swing flap when carrying out air conditioning exhausting, further increase the blowing range of air conditioning exhausting, realize room temperature
Quick adjusting.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the internal structure chart of the air conditioner of the embodiment of the present invention；
Fig. 2 is the three-dimensional structure diagram of the air conditioner of the embodiment of the present invention；
Fig. 3 is the three-dimensional structure diagram of the left wind deflector of the air conditioner of the embodiment of the present invention；
Fig. 4 is the three-dimensional structure diagram of the right wind deflector of the air conditioner of the embodiment of the present invention；
Fig. 5 is the pin shaft mounting structure figure on the left wind deflector of the air conditioner of the embodiment of the present invention.
Description of symbols: 1, shell；2, the first through-flow fan blade；3, the second through-flow fan blade；4, dual-axle motor；5, groove；
6, spacing board；7, the first air duct；8, the second air duct；9, left wind deflector；10, right wind deflector；11, the first wind guide motor；12, second
Wind guide motor；13, skeleton；14, sliding rail；15, sliding block；16, pin shaft；17, raised；18, elastic fastening hook；19, the first limit plate；
20, the second limit plate；21, stop block；22, axle sleeve.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.Herein, each embodiment individually or can be indicated generally with term " invention ", and it is convenient that this is used for the purpose of,
And if in fact disclosing the invention more than one, the range for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, relational terms such as first and second and the like be used only for by an entity or operation with
Another entity or operation distinguish, and without requiring or implying, there are any actual relationships between these entities or operation
Or sequence.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, thus
So that process, method or equipment including a series of elements not only include those elements, but also including being not explicitly listed
Other element, or further include for this process, method or the intrinsic element of equipment.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that in process, method or equipment including the element
In there is also other identical elements.Each embodiment herein is described in a progressive manner, and each embodiment stresses
Be the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.For implementing
For method, product etc. disclosed in example, since it is corresponding with method part disclosed in embodiment, so the comparison of description is simple
Single, reference may be made to the description of the method.
In conjunction with referring to figs. 1 to 5, according to an embodiment of the invention, air conditioner includes shell 1 and is arranged in shell 1
Interior the first through-flow fan blade 2 and the second through-flow fan blade 3, the first through-flow fan blade 2 and the axially spaced setting of the second through-flow fan blade 3,
Dual-axle motor 4 is provided in interval, the both ends of dual-axle motor 4 are drivingly connected with two through-flow fan blades respectively, are provided on shell 1
Air outlet is provided with air deflection assemblies at air outlet.
By at least two through-flow fan blades of axially spaced setting in the air conditioner, the axial direction for being capable of increasing air conditioner is long
Degree, increases the air-supply length and air-supply region of air conditioner, increases the blowing range of air conditioner, realize the fast velocity modulation of room temperature
Section meets the adjusting of large space room temperature, without that in the indoor multiple air conditioners of setting, can save cost, while can be with
Effectively improve the uniformity of indoor temperature distribution.Simultaneously as being mentioned simultaneously to the through-flow fan blade of two sides using a dual-axle motor 4
For power output, therefore space can either be saved, and the use of motor can be reduced, reduce cost.Due to the air outlet of shell
Place is provided with air deflection assemblies, therefore can realize vertical swing flap when carrying out air conditioning exhausting, further increases air conditioning exhausting
Blowing range realizes the quick adjusting of room temperature.
Spacing board 6 is provided between two through-flow fan blades, shell 1 forms 7 He of the first air duct spaced apart by spacing board 6
Second air duct 8, corresponding first through-flow fan blade 2 setting in the first air duct 7, corresponding second through-flow fan blade 3 setting in the second air duct 8, wind-guiding
Board group part includes left wind deflector 9 and right wind deflector 10, and corresponding first through-flow fan blade 2 of left wind deflector 9 is arranged in the first air duct 7,
Corresponding second through-flow fan blade 3 of right wind deflector 10 is arranged in the second air duct 8.
Since the air conditioner includes two air ducts set gradually along axial direction, can in air conditioner air-out so that
The outlet air of two through-flow fan blades can separate, to realize the first through-flow fan blade 2 in 7 outlet air of the first air duct, the second through-flow fan blade 3
Outlet air in 8 outlet air of the second air duct, two air ducts influences each other smaller, realizes the larger range outlet air of air conditioner, control is more
Add simply, blowing range is wider, and can effectively avoid in two through-flow fan blade operational process to shadow caused by outlet air each other
It rings, so that air conditioner can effectively ensure that air-out volume and outlet air efficiency in outlet air.
The left drive connection of wind deflector 9 has the first wind guide motor 11, and the right drive connection of wind deflector 10 has the second wind guide motor 12,
First wind guide motor 11 and the respective independent control of the second wind guide motor 12.Two wind guide motors are mutually indepedent, and individually control,
Therefore different control commands can be executed to left wind deflector 9 and right wind deflector 10 respectively, may be implemented to be swung up simultaneously, together
When to lower swing, one upward one realize the conversion of different air-out modes to a variety of wind deflector control models such as lower swing,
The use demand of same indoor different crowd can preferably be met, while larger range of outlet air, Neng Gougeng also may be implemented
The temperature for meeting large space well, which is adjusted, to be required, and temperature regulations speed is higher, and applicability is more preferable.
Skeleton 13 is provided in shell 1, left wind deflector 9 and right wind deflector 10 are rotatably arranged in respectively on skeleton 13.
In such a way that left wind deflector 9 and right wind deflector 10 are installed on skeleton 13, it can reduce the installation difficulty of wind deflector, drop simultaneously
Adverse effect caused by structural strength of the installation of low wind deflector to air conditioner guarantees the stability of air conditioner run time organization
And reliability.
Pin shaft 16 is provided on left wind deflector 9, left wind deflector 9 is rotatably connected on skeleton 13 by pin shaft 16；And/or
Pin shaft 16 is provided on right wind deflector 10, right wind deflector 10 is rotatably connected on skeleton 13 by pin shaft 16.It is set on skeleton 13
The structure of rotation connection can be realized with pin shaft 16 by being equipped with connection otic placode or other, so that wind deflector can facilitate
Ground is rotatably arranged on skeleton 13, is realized and is controlled the wind-guiding of air conditioner air-out.
In the present embodiment, it is provided with sliding rail 14 on left wind deflector 9, sliding block 15, the end of sliding block 15 is provided on sliding rail 14
Portion is provided with pin shaft 16, and the locating part for limiting the sliding position of sliding block 15 is additionally provided on wind deflector.The bottom of sliding block 15 is arranged
There is sliding slot, sliding block 15 is slidably arranged on sliding rail 14 by sliding slot, can guarantee the accuracy of the direction of motion of sliding block 15, is realized
The accurate installation of pin shaft hole on the otic placode of pin shaft 16 and skeleton 13 cooperates, and conveniently realizes and turns between pin shaft 16 and skeleton 13
Dynamic connection.By the way that locating part is arranged, sliding position of the sliding block 15 on sliding rail 14 can be formed and be limited, to guarantee sliding block 15
It can limit and make pin shaft 16 in the first sliding position for realizing the rotation connection between pin shaft 16 and skeleton 13, or limit
It is disconnected to facilitate the second sliding position for removing left wind deflector 9 from skeleton 13 between skeleton 13, facilitates realization
Installation and removal of the left wind deflector 9 on skeleton 13, assembly and disassembly are high-efficient, and installation difficulty is low, convenient for operation.
In the present embodiment, the two sides of sliding block 15 are provided with protrusion 17, and the two sides respective protrusions 17 of sliding rail 14 are provided with bullet
Property grab 18, elastic fastening hook 18 is arranged on the sliding position of sliding block 15, and forms backstop to protrusion 17.18 shape of elastic fastening hook
At above-mentioned locating part, when pin shaft 16, which needs to realize between skeleton 13, to be connected, the stretching of pin shaft 16 can control, so that sliding block
Protrusion 17 on 15 is formed by limit space from elastic fastening hook 18 and passes through, and in the process, elastic change occurs for elastic fastening hook 18
Shape, limit space become larger, and protrusion 17 passes through enough, after protrusion 17 passes through, 18 homing of elastic fastening hook, again to protrusion
17 formed backstops, effectively prevent without external forces pin shaft 16 bounce back, enable pin shaft 16 steadily with skeleton 13
Realize rotation connection.When needing to make pin shaft 16 to retract, elastic fastening hook 18 can be broken into two with one's hands at this time, increase two elastic fastening hooks 18 it
Between space, protrusion 17 is passed through between two elastic fastening hooks 18, latter two 18 homing of elastic fastening hook, pin
Axis 16 smoothly bounce back, realize the unlock between left wind deflector 9 and skeleton 13, can be convenient by left wind deflector 9 from skeleton 13
It removes, is convenient for replacement, maintenance or the cleaning of left wind deflector 9.
In the present embodiment, the first limit plate 19, the second limit plate 20 and stop block 21 are additionally provided on left wind deflector 9,
Installation gap is formed between first limit plate 19 and stop block 21, when sliding block 15 is in sliding end, pin shaft 16 is threaded through the
In one limit plate 19, and the end of pin shaft 16 is located at stop block 21, and the setting of the second limit plate 20 is in sliding block 15 far from the first limit
One end of position plate 19, and the movement of the other direction of sliding block 15 is formed and is limited.
Wherein the first limit plate 19 and the second limit plate 20 are separately positioned on the both ends of the glide direction of sliding block 15, for pair
The sliding position of sliding block 15 is limited, and when sliding block 15 slides into the restraining position of the second limit plate 20, pin shaft 16 is from backstop
It is retracted at block 21 in the pin shaft hole of first limit plate 19, gets out of the way the installation gap between the first limit plate 19 and stop block 21,
So that pin shaft 16 is not forming obstruction to the otic placode being located in the installation gap, otic placode can be deviate from from the installation gap,
Realize the separation between left wind deflector 9 and skeleton 13.Pin shaft 16 is still located in the pin shaft hole on the first limit plate 19 at this time, together
When elastic fastening hook 18 coupler body sliding block 15 top formed limit, match with the first limit plate 19 and matched with sliding rail 14,
Clamping limit is formed to sliding block 15, anti-limited slip block 15 is detached from from sliding rail 14, ensure that 15 mounting structure of sliding block stability and
Reliability.
When sliding block 15 slides into the restraining position of the first limit plate 19,18 pairs of formation of protrusion 17 of elastic fastening hook at this time stop
Gear, anti-limited slip block 15 bounce back, while the first limit plate 19 forms sliding block 15 and limits, and anti-limited slip block 15 continues to slide, thus
Under the action of elastic fastening hook 18 and the first limit plate 19, sliding block 15 is limited in extended position, and pin shaft 16 extend out to stop block 21
Position, and penetrate in the lug plate holes of skeleton 13, by stop block 21 and the first limit plate 19 to pin shaft 16 relative to otic placode
Movement form limit, prevent pin shaft 16 from deviating from from otic placode, guarantee the rotation connection between pin shaft 16 and skeleton 13.It is preferred that
Ground, the overhead height of stop block 21 are lower than the overhead height of pin shaft 16, and groove 5 formed on the top of stop block 21, pin shaft 16 from
After first limit plate 19 stretches out, protrude into the groove 5.Since the height of stop block 21 is lower, occupied space is smaller, will not
Installation between pin shaft 16 and otic placode is caused to hinder, simultaneously because the cooperation of the first limit plate 19 and stop block 21, and can
It is formed and is stopped at the both ends of pin shaft 16, prevented otic placode from deviating from from pin shaft 16, ensure that and connected between left more than 9 skeleton 13 of wind deflector
The stability and reliability of structure.
Preferably, sliding block 15 be it is multiple, and along the length direction interval of left wind deflector 9 be arranged, can in axial direction with
Multiple positions of skeleton 13 form rotation connection, ensure that uniform force, under effectivelying prevent left wind deflector 9 to occur due to gravity
It hangs down and deforms, improve the stability of mounting structure between left wind deflector 9 and skeleton 13.
The driving end of left wind deflector 9 is provided with axle sleeve 22, and axle sleeve 22 is threaded through on skeleton 13, and left wind deflector 9 passes through axle sleeve
22 and first wind guide motor 11 be drivingly connected.Since the first wind guide motor 11 needs that left wind deflector 9 is driven to rotate, first is led
The output shaft of wind turbine 11 cannot be circular shaft, can only be D axis either square shaft, if directly by the defeated of the first wind guide motor 11
Shaft is passed through from skeleton 13, and it is round for will lead to the mounting hole on skeleton 13, and output shaft is non-cylindrical, so that first
There are larger gaps between mounting hole in wind guide motor 11 and skeleton 13, will cause in driving left 9 rotation process of wind deflector
Biggish vibrating noise, and larger rotation abrasion is formed, cause the service life of motor either left wind deflector 9 significantly to drop
It is low.By the way that axle sleeve 22 is arranged, it can use axle sleeve 22 and be threaded through on the mounting hole of skeleton 13, realized and skeleton 13 by axle sleeve 22
Between be rotatably assorted, form the D axis that matches with left wind deflector 9 or other axle construction in the other end of axle sleeve 22, from
And avoid the first wind guide motor 11 and drive the vibrating noise that may occur in left 9 rotation process of wind deflector, improve left wind-guiding
The stability of 9 rotational structure of plate, while the rotation mill occurred between the first wind guide motor 11 and skeleton 13 can be effectively reduced
Damage forms effective protection to the first wind guide motor 11, extends the service life of the first wind guide motor 11.
The fit structure of sliding rail and sliding block on right wind deflector 10 is identical as left wind deflector 9, and I will not elaborate.
It should be understood that the invention is not limited to the process and structure that are described above and are shown in the accompanying drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by the attached claims
System.
Claims (10)
1. a kind of air conditioner, which is characterized in that including shell (1) and the first through-flow fan blade (2) being arranged in the shell (1)
With the second through-flow fan blade (3), first through-flow fan blade (2) and second through-flow fan blade (3) axially spaced setting, interval
It is inside provided with dual-axle motor (4), the both ends of the dual-axle motor (4) are drivingly connected with two through-flow fan blades respectively, the shell
(1) it is provided with air outlet on, is provided with air deflection assemblies at the air outlet.
2. air conditioner according to claim 1, which is characterized in that be provided with spacing board (6), institute between two through-flow fan blades
It states shell (1) and forms the first air duct (7) and the second air duct (8) spaced apart, first air duct by the spacing board (6)
(7) corresponding first through-flow fan blade (2) setting, corresponding second through-flow fan blade (3) setting of second air duct (8), institute
Stating air deflection assemblies includes left wind deflector (9) and right wind deflector (10), corresponding first through-flow fan blade of left wind deflector (9)
(2) in first air duct (7), corresponding second through-flow fan blade (3) of right wind deflector (10) is arranged described for setting
In second air duct (8).
3. air conditioner according to claim 2, which is characterized in that the left wind deflector (9), which is drivingly connected, the first wind-guiding
Motor (11), the right wind deflector (10), which is drivingly connected, to be had the second wind guide motor (12), first wind guide motor (11) and institute
State the second wind guide motor (12) respective independent control.
4. air conditioner according to claim 3, which is characterized in that be provided with skeleton (13), the left side in the shell (1)
Wind deflector (9) and the right wind deflector (10) are rotatably arranged in respectively on the skeleton (13).
5. air conditioner according to claim 4, which is characterized in that be provided with pin shaft (16), institute on the left wind deflector (9)
Left wind deflector (9) are stated to be rotatably connected on the skeleton (13) by the pin shaft (16)；And/or the right wind deflector (10)
On be provided with pin shaft (16), the right wind deflector (10) is rotatably connected on the skeleton (13) by the pin shaft (16).
6. air conditioner according to claim 5, which is characterized in that be provided with sliding rail (14), institute on the left wind deflector (9)
It states and is provided on sliding rail (14) sliding block (15), the end of the sliding block (15) is provided with the pin shaft (16), on the wind deflector
It is additionally provided with the locating part for limiting the sliding position of the sliding block (15).
7. air conditioner according to claim 6, which is characterized in that the two sides of the sliding block (15) are provided with raised (17),
The two sides of the sliding rail (14) correspond to raised (17) and are provided with elastic fastening hook (18), and the elastic fastening hook (18) is arranged in institute
On the sliding position for stating sliding block (15), and backstop is formed to described raised (17).
8. air conditioner according to claim 7, which is characterized in that be additionally provided with the first limit on the left wind deflector (9)
Plate (19), the second limit plate (20) and stop block (21), form between first limit plate (19) and the stop block (21)
Gap is installed, when the sliding block (15) are in sliding end, the pin shaft (16) is threaded through in first limit plate (19),
And the end of the pin shaft (16) is located at the stop block (21), second limit plate (20) is arranged in the sliding block (15)
One end far from first limit plate (19), and the movement of the other direction of the sliding block (15) is formed and is limited.
9. air conditioner according to claim 8, which is characterized in that the sliding block (15) is multiple, and along the left wind-guiding
The length direction interval of plate (9) is arranged.
10. air conditioner according to claim 4, which is characterized in that the driving end of the left wind deflector (9) is provided with axle sleeve
(22), the axle sleeve (22) is threaded through on the skeleton (13), and the left wind deflector (9) passes through the axle sleeve (22) and described the
One wind guide motor (11) is drivingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560173.3A CN109737505A (en) | 2018-12-20 | 2018-12-20 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560173.3A CN109737505A (en) | 2018-12-20 | 2018-12-20 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109737505A true CN109737505A (en) | 2019-05-10 |
Family
ID=66360746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811560173.3A Pending CN109737505A (en) | 2018-12-20 | 2018-12-20 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109737505A (en) |
Cited By (1)
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| WO2021017144A1 (en) * | 2019-08-01 | 2021-02-04 | 广东美的环境电器制造有限公司 | Wind wheel apparatus and air blowing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017144A1 (en) * | 2019-08-01 | 2021-02-04 | 广东美的环境电器制造有限公司 | Wind wheel apparatus and air blowing device |
| US11867194B2 (en) | 2019-08-01 | 2024-01-09 | Gd Midea Environment Appliances Mfg Co., Ltd. | Impeller apparatus and air blowing device |
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