CN108731128A - Air outlet mesh and air-conditioner outdoor unit - Google Patents
Air outlet mesh and air-conditioner outdoor unit Download PDFInfo
- Publication number
- CN108731128A CN108731128A CN201810637322.5A CN201810637322A CN108731128A CN 108731128 A CN108731128 A CN 108731128A CN 201810637322 A CN201810637322 A CN 201810637322A CN 108731128 A CN108731128 A CN 108731128A
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- China
- Prior art keywords
- air
- fixed frame
- air outlet
- outlet mesh
- tilting section
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses a kind of air outlet mesh and air-conditioner outdoor unit, air outlet mesh includes：Fixed frame and rib, the inner wall of the outlet air end of fixed frame is equipped with air dam, air dam includes tilting section and extended segment, the first end of tilting section and the outlet air end of fixed frame connect, the second end of tilting section is connect with extended segment, along the flow direction of air-flow, tilting section is located at the downstream of extended segment and the internal face of tilting section is configured to tilt the inclined-plane extended towards radial outside.Rib is located at the radially inner side of fixed frame, and rib is connect with air dam.Air dam is arranged by the internal perisporium in fixed frame in air outlet mesh according to the present invention, and tilting section can play the air-flow of outflow good guiding transitional function.It effectively prevents the air-flow flowed out at fixed frame outlet air end and generates vortex and the defect of noise, and then improve the overall performance of product.
Description
Technical field
The present invention relates to air-conditioning technical fields, specifically, more particularly to a kind of air outlet mesh and air-conditioner outdoor unit.
Background technology
Air-conditioner outdoor unit guard installation section is commonly following form, mainly considers the simple of mold and technique, not
Consider influence of the structure to air duct air-flow.
In the related technology, guard mounting surface is right angle in outlet port, and air-flow does not have water conservancy diversion when being flowed out from air duct, this
Kind structure can be formed about strong turbulent region in mounting surface, on the one hand form reflux, on the other hand will produce stronger noise.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes that one kind goes out
Wind guard, the air outlet mesh have the advantages that simple in structure, noise is small.
The present invention also proposes a kind of air-conditioner outdoor unit, and the air-conditioner outdoor unit includes air outlet mesh described above.
Air outlet mesh according to the ... of the embodiment of the present invention, including：Fixed frame, the inner wall of the outlet air end of the fixed frame, which is equipped with, leads
Wind portion, the air dam include tilting section and extended segment, and the first end of the tilting section is connect with the outlet air end of the fixed frame,
The second end of the tilting section is connect with the extended segment, and along the flow direction of air-flow, the tilting section is located at the extended segment
Downstream and the tilting section internal face be configured to towards radial outside tilt extend inclined-plane；And rib, the rib
Positioned at the radially inner side of the fixed frame, the rib is connect with the air dam.
Air dam is arranged by the internal perisporium in fixed frame in air outlet mesh according to the ... of the embodiment of the present invention, and tilting section can be with
Good guiding transitional function is played to the air-flow of outflow.It effectively prevents the air-flow flowed out at fixed frame outlet air end and generates vortex
With the defect of noise, and then the overall performance of product is improved.
According to some embodiments of the present invention, the outlet air end of the fixed frame extends beyond described the of the tilting section
One end.
In some embodiments of the invention, the height of the part beyond the first end of the fixed frame is h1, full
Foot：1mm≤h1≤2mm.
According to some embodiments of the present invention, the height of the extended segment is h2, is met：1mm≤h2≤3mm.
In some embodiments of the invention, the height of outlet air end of the free end of the extended segment apart from the fixed frame
Degree is h3, and the height of the rib is h4, is met：1mm≤h3-h4≤3mm.
According to some embodiments of the present invention, the radial width of the air dam and the thickness summation of the fixed frame are
W1 meets：5mm≤w1≤10mm.
In some embodiments of the invention, one end far from the air dam of the fixed frame exceeds the extended segment
Free end.
Air-conditioner outdoor unit according to the ... of the embodiment of the present invention, including：Casing, the casing are equipped with air outlet；And air outlet mesh,
The air outlet mesh is air outlet mesh described above, and the air outlet mesh is connect with the casing and the air outlet mesh is provide with
The air outlet.
Air-conditioner outdoor unit according to the ... of the embodiment of the present invention, by being provide with guard in air outlet, the rib of air outlet mesh can be with
Make the air-flow that air outlet mesh flows out more uniformly, comfortably.Moreover, wind-guiding is arranged in the internal perisporium by the fixed frame in air outlet mesh
Portion, tilting section can play good guiding, transitional function to the air-flow of outflow.It effectively prevents flowing out at fixed frame outlet air end
Air-flow generate vortex and the defect of noise, and then improve the overall performance of air-conditioner outdoor unit.
According to some embodiments of the present invention, the periphery wall of the fixed frame is equipped with the first clamping part, is set on the casing
There is the second clamping part coordinated with first clamping part.
In some embodiments of the invention, the fixed frame is equipped with pilot hole, and the air-conditioner outdoor unit further includes fixing
Connector, the fixedly connected part pass through the pilot hole to fix on the housing.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of air outlet mesh according to the ... of the embodiment of the present invention；
Fig. 2 is the partial enlarged view for the part A that Fig. 1 centre circles show；
Fig. 3 is the lateral partial structurtes sectional view of air outlet mesh according to the ... of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of air outlet mesh according to the ... of the embodiment of the present invention；
Fig. 5 is the partial structurtes enlarged drawing for the part B that Fig. 4 centre circles show；
Fig. 6 is the structural schematic diagram of air outlet mesh according to the ... of the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of air outlet mesh according to the ... of the embodiment of the present invention；
Fig. 8 is the noise curve figure that the air outlet mesh of air dam is arranged and the air outlet mesh of air dam is not arranged.
Reference numeral：
Air outlet mesh 100,
Fixed frame 10, air dam 110, tilting section 111, first end 1111, second end 1112, extended segment 112, the first buckle
Portion 120, pilot hole 130,
Rib 20.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", " thickness ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " axial direction ", " radial direction ", " circumferential direction " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, do not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and
Operation, therefore be not considered as limiting the invention.In addition, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Air outlet mesh 100 and air-conditioner outdoor unit according to the ... of the embodiment of the present invention are described below with reference to Fig. 1-Fig. 8.
As shown in Figure 1, air outlet mesh 100 according to the ... of the embodiment of the present invention, air outlet mesh 100 include：Fixed frame 10 and rib
Item 20,
Specifically, as shown in Figure 1-Figure 3, the inner wall of the outlet air end of fixed frame 10 is equipped with air dam 110, air dam 110
Including tilting section 111 and extended segment 112, the first end 1111 of tilting section 111 is connect with the outlet air end of fixed frame 10, tilting section
111 second end 1112 is connect with extended segment 112.Along the flow direction (arrow direction as shown in Figure 1) of air-flow, tilting section
111 be located at extended segment 112 downstream and tilting section 111 internal face be configured to towards radial outside tilt extend inclined-plane.
The air-flow flowed out as a result, from air outlet mesh 100 when flowing through the position of air dam 110, can be oriented to tilting section through extended segment 112
111, subsequent air-flow can swimmingly be flowed to radial outside along the inclined-plane of tilting section 111, be spread, so as to avoid in fixed frame
Vortex and the defect of noise are generated at 10 outlet air end.
Rib 20 is located at the radially inner side of fixed frame 10, and rib 20 is connect with air dam 110.As shown in figure 4, fixed frame 10
Radially inner side can be arranged at intervals with multiple ribs 20, thus, it is possible to improve out flow through 100 air-flow of air outlet mesh flowing it is equal
Even property and comfort.Moreover, air outlet mesh 100 can stop that user's finger accidentally stretches into 100 inside of air outlet mesh and safety occurs
Hidden danger improves the safety of product.In addition, by the way that rib 20 is connect with air dam 110, convenient for the fixed dress of rib 20
Match.
Air outlet mesh 100 according to the ... of the embodiment of the present invention is arranged air dam 110 by the internal perisporium in fixed frame 10, inclines
Oblique section 111 can play the air-flow of outflow good guiding transitional function.It effectively prevents flowing out at 10 outlet air end of fixed frame
Air-flow generate vortex and the defect of noise, and then improve the overall performance of product.
According to some embodiments of the present invention, as shown in Figures 2 and 3, the outlet air end of fixed frame 10 extends beyond inclination
The first end 1111 of section 111.It is convenient for the fixing assembling of rib 20 and fixed frame 10 as a result,.It should be noted that such as Fig. 4 and Fig. 5
Shown, one end of rib 20 can be connect with the part of air dam 110 and the stretching tilting section 111 of fixed frame 10, consequently facilitating rib
Item 20 is fixedly connected with fixed frame 10, and can improve the fastness connected between rib 20 and fixed frame 10 and reliable
Property.Bonding connection or rib 20 and fixed frame 10 may be used between rib 20 and fixed frame 10 can be integrally formed part.
In some embodiments of the invention, as shown in figure 3, the height of the part beyond first end 1111 of fixed frame 10
For h1, meet：1mm≤h1≤2mm.It should be noted that the height of first end 1111 of the fixed frame 10 beyond tilting section 111 is spent
Greatly, the air-out effect of air outlet mesh 100 can be influenced；The height of first end 1111 of the fixed frame 10 beyond tilting section 111 is too small, no
Conducive to being linked and packed for fixed frame 10 and rib 20.By experimental verification, when by fixed frame 10 beyond 1111 part of first end
Height h1 is set as：When 1mm≤h1≤2mm, convenient for being fixedly connected for rib 20 and fixed frame 10, furthermore, it is possible to effectively reduce
Influence of the fixed frame 10 to outlet air air-flow.
According to some embodiments of the present invention, as shown in figure 3, the height of extended segment 112 is h2, meet：1mm≤h2≤
3mm.It should be noted that by the way that extended segment 112 is arranged, it can utilize extended segment 112 that air-flow is oriented to tilting section 111, to
The smoothness of air-flow flowing can be improved.If the setting of extended segment 112 is too short, it is unfavorable for extended segment 112 and air-flow is oriented to inclination
Section 111.Moreover, the end that air-flow can hit extended segment 112 generates reflux and noise.If extended segment 112 is long, it is unfavorable for fixing
Assembly between frame 10 and casing.By experimental verification, when the height h2 of extended segment 112 meets：When 1mm≤h2≤3mm, extend
Section 112 can by airflow smooth be oriented to tilting section 111.Moreover, when fixed frame 10 and casing assemble, extended segment 112 from
It will not be contacted between casing by end, so as to avoid product at runtime, collided between extended segment 112 and casing.
In some embodiments of the invention, the height of outlet air end of the free end of extended segment 112 apart from fixed frame 10
Height for h3, rib 20 is h4, is met：1mm≤h3-h4≤3mm.As Figure 2-Figure 5, one end of rib 20 and fixed frame
The part of 10 stretching first end 1111 and air dam 110 connect, by the way that the free end of extended segment 112 is arranged apart from fixed frame
When the height h3 of 10 outlet air end and the height h4 of rib 20 meet 1mm≤h3-h4≤3mm, it can make to consolidate with rib 20
The height that the sum of the coupling part of frame 10 and the height of extended segment are higher than rib 20 is determined, consequently facilitating rib 20 and fixed frame 10
Between be fixedly connected.Furthermore, it is possible to make the compact-sized, reasonable of fixed frame 10.
According to some embodiments of the present invention, as shown in figure 3, the thickness of the radial width of air dam 110 and fixed frame 10
Summation is w1, is met：5mm≤w1≤10mm.It is understood that the thickness of the radial width and fixed frame 10 of air dam 110
Summation should not be arranged excessive, in order to avoid influencing the compact designed of air outlet mesh 100, and can influence outlet air air-flow in fixed frame
Diverging flow effect at 10.The radial width of air dam 110 and the thickness synthesis of fixed frame 10 should not be arranged it is too small, in order to avoid
Influence the overall construction intensity of air outlet mesh 100.By experimental verification, when the radial width and fixed frame 10 of air dam 110
When the summation of thickness is set as 5mm≤w1≤10mm, it can make air outlet mesh 100 that there is enough structural strengths.Moreover, advantageous
In the compact designed of fixed frame 10, and the air-out effect of air outlet mesh 100 can be improved.
In some embodiments of the invention, as shown in Figures 2 and 3, one end of the separate air dam 110 of fixed frame 10 is super
Go out the free end of extended segment 112.It should be noted that the needs of fixed frame 10 are fixedly connected with casing, by the way that fixed frame 10 is arranged
One end of separate air dam 110 exceed the free end of extended segment 112, convenient for being fixedly connected for fixed frame 10 and casing.Moreover,
When fixed frame 10 is connect with casing, there is gap, so as to avoid product work between the free end and casing of extended segment 112
When making, the free end of extended segment 112 and casing collide noise.
According to some embodiments of the present invention, air outlet mesh 100 can be formed as round, direction or polygon.Namely
It says, air outlet mesh 100 can be circle, can also be formed as direction or other polygons, thus, it is possible to improve air outlet mesh
The diversity of 100 designs.
Air-conditioner outdoor unit according to the ... of the embodiment of the present invention, air-conditioner outdoor unit include：Casing and air outlet mesh 100, casing is set
It is above-mentioned air outlet mesh 100 to have air outlet, air outlet mesh 100, and air outlet mesh 100 is connect with casing and air outlet mesh 100 covers
Set out air port.
Air-conditioner outdoor unit according to the ... of the embodiment of the present invention, by being provide with guard, the rib 20 of air outlet mesh 100 in air outlet
It can make the air-flow that air outlet mesh 100 flows out more uniformly, comfortably.Moreover, by the fixed frame 10 of air outlet mesh 100
Air dam 110 is arranged in peripheral wall, and tilting section 111 can play good guiding, transitional function to the air-flow of outflow.It effectively prevents
The air-flow flowed out at 10 outlet air end of fixed frame generates vortex and the defect of noise, and then improves the globality of air-conditioner outdoor unit
Energy.
According to some embodiments of the present invention, as shown in fig. 7, the periphery wall of fixed frame 10 can be equipped with the first clamping part
120.Correspondingly, the second clamping part coordinated with the first clamping part 120 can be equipped on casing.10 casing of fixed frame can as a result,
With by the first clamping part 120 and the second clamping portion realize efficiently, be bonded.For example, the first clamping part 120 and second buckles
One in portion can be formed as buckling, another can be formed as card slot.As shown in fig. 7, the first clamping part 120 can be along solid
The circumferential direction interval setting for determining frame 10 is multiple, thus, it is possible to improve air outlet mesh 100 and the fixed fastness of casing and steadily
Property.
In some embodiments of the invention, as shown in Figure 6 and Figure 7, fixed frame 10 can be equipped with pilot hole 130, air-conditioning
Outdoor unit further includes fixedly connected part, and fixedly connected part is fixed on across pilot hole 130 on casing.Thus, it is possible to improve outlet air
Guard 100 and the fixed fastness of casing and reliability.For example, multiple spiral shells can be arranged along the circumferential direction interval of fixed frame 10
Nail hole, air outlet mesh 100 pass through in screw fixing assembling to casing.
Air outlet mesh according to the ... of the embodiment of the present invention is described in detail with a specific embodiment referring to Fig. 1-Fig. 8
100.It should be noted that air outlet mesh 100 can be applied on electric fan, air-conditioner outdoor unit or other electrical equipments.In order to
Description is convenient, is illustrated so that air outlet mesh 100 is applied to air-conditioner outdoor unit as an example.It is worth understanding, it is described below to be only
Exemplary description, rather than to the concrete restriction of the present invention.
Air-conditioner outdoor unit includes：Casing and air outlet mesh 100, casing are equipped with air outlet, and air outlet mesh 100 is connect with casing
And air outlet mesh 100 is provide with air outlet.
Wherein, as shown in Figure 6 and Figure 7, the periphery wall of fixed frame 10 is equipped at intervals with multiple first clamping parts along circumferential direction
120, the first clamping part 120 is formed as buckling.Correspondingly, casing is equipped with the second clamping part coordinated with the first clamping part 120,
Second clamping part is formed as card slot.Fixed frame 10 is equipped at intervals with multiple pilot holes 130 along circumferential direction, and pilot hole 130 is screw thread
Hole, air-conditioner outdoor unit further include fixedly connected part, and fixedly connected part is fixed on across pilot hole 130 on casing.
It should be noted that when assembling air outlet mesh 100 and casing, can the first clamping part 120 be first caught in second
In clamping part, pre-fixing between air outlet mesh 100 and casing is realized, can then screw be utilized to pass through pilot hole 130 that will go out
Wind guard 100 is fixed on casing.
As shown in Figure 1-Figure 3, air outlet mesh 100 includes：Fixed frame 10 and rib 20.
Wherein, as shown in Figures 2 and 3, the inner wall of the outlet air end of fixed frame 10 is equipped with air dam 110, and air dam 110 includes
The first end 1111 of tilting section 111 and extended segment 112, tilting section 111 is connect with the outlet air end of fixed frame 10, tilting section 111
Second end 1112 is connect with extended segment 112.Along the flow direction (arrow direction as shown in Figure 1) of air-flow, tilting section 111
It is configured to tilt the inclined-plane extended towards radial outside in the downstream of extended segment 112 and the internal face of tilting section 111.Fixed frame
10 radially inner side is equipped at intervals with more ribs 20, and rib 20 is connect with air dam 110.
As shown in Figures 2 and 3, the outlet air end of fixed frame 10 extends beyond the first end 1111 of tilting section 111, fixed frame
The height of 10 part beyond first end 1111 meets for h1：1mm≤h1≤2mm.The height of extended segment 112 meets for h2：
1mm≤h2≤3mm.The height of outlet air end of the free end of extended segment 112 apart from fixed frame 10 is h3, and the height of rib 20 is
H4 meets：1mm≤h3-h4≤3mm.The thickness w2 of fixed frame 10 meets：2mm≤w1≤4mm, the radial width of air dam 110
Meet for w1 with the thickness summation of fixed frame 10：5mm≤w1≤10mm.One end of the separate air dam 110 of fixed frame 10 exceeds
The free end of extended segment 112.
As shown in figure 8, compared to the air outlet mesh 100 that air dam 110 is not arranged, the air outlet mesh of air dam 110 is set
100 lower noise 0.5dB or so.
As a result, by the way that air dam 110 is arranged in the internal perisporium of fixed frame 10, tilting section 111 can play the air-flow of outflow
To good guiding transitional function.Effectively prevent the air-flow generation vortex of outflow at 10 outlet air end of fixed frame and lacking for noise
It falls into, and then improves the overall performance of product.And air outlet mesh 100 requires simply, to be easy depanning, be readily produced to mold.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of air outlet mesh, which is characterized in that including：
The inner wall of fixed frame, the outlet air end of the fixed frame is equipped with air dam, and the air dam includes tilting section and extended segment, institute
The first end for stating tilting section is connect with the outlet air end of the fixed frame, and the second end of the tilting section is connect with the extended segment,
Along the flow direction of air-flow, the tilting section is located at the downstream of the extended segment and the internal face of the tilting section is configured to court
The inclined-plane extended is tilted to radial outside；With
Rib, the rib are located at the radially inner side of the fixed frame, and the rib is connect with the air dam.
2. air outlet mesh according to claim 1, which is characterized in that the outlet air end of the fixed frame extends beyond described
The first end of tilting section.
3. air outlet mesh according to claim 2, which is characterized in that the part beyond the first end of the fixed frame
Height be h1, meet：1mm≤h1≤2mm.
4. air outlet mesh according to claim 1, which is characterized in that the height of the extended segment is h2, is met：1mm≤
h2≤3mm。
5. air outlet mesh according to claim 1, which is characterized in that the free end of the extended segment is apart from the fixed frame
The height of outlet air end be h3, the height of the rib is h4, is met：1mm≤h3-h4≤3mm.
6. air outlet mesh according to claim 1, which is characterized in that the radial width of the air dam and the fixed frame
Thickness summation be w1, meet：5mm≤w1≤10mm.
7. air outlet mesh according to claim 1, which is characterized in that one end far from the air dam of the fixed frame
Free end beyond the extended segment.
8. a kind of air-conditioner outdoor unit, which is characterized in that including：
Casing, the casing are equipped with air outlet；With
Air outlet mesh, the air outlet mesh are the air outlet mesh according to any one of claim 1-7, the air outlet mesh
It is connect with the casing and the air outlet mesh is provide with the air outlet.
9. air-conditioner outdoor unit according to claim 8, which is characterized in that the periphery wall of the fixed frame is equipped with the first buckle
Portion, the casing are equipped with the second clamping part coordinated with first clamping part.
10. air-conditioner outdoor unit according to claim 8, which is characterized in that the fixed frame is equipped with pilot hole, the air-conditioning
Outdoor unit further includes fixedly connected part, and the fixedly connected part passes through the pilot hole to fix on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637322.5A CN108731128B (en) | 2018-06-20 | 2018-06-20 | Air outlet mesh enclosure and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637322.5A CN108731128B (en) | 2018-06-20 | 2018-06-20 | Air outlet mesh enclosure and air conditioner outdoor unit |
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| Publication Number | Publication Date |
|---|---|
| CN108731128A true CN108731128A (en) | 2018-11-02 |
| CN108731128B CN108731128B (en) | 2021-01-22 |
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