CN210463320U - Air condensing units and wind guide assembly thereof - Google Patents
Air condensing units and wind guide assembly thereof Download PDFInfo
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- CN210463320U CN210463320U CN201921231912.4U CN201921231912U CN210463320U CN 210463320 U CN210463320 U CN 210463320U CN 201921231912 U CN201921231912 U CN 201921231912U CN 210463320 U CN210463320 U CN 210463320U
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- air
- air guide
- guide ring
- outdoor unit
- air conditioner
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Abstract
The utility model discloses an air condensing units and air guide component thereof, air guide component includes: a panel; the air guide ring is arranged on the panel, and an air channel is limited in the middle of the air guide ring; the axial flow fan blade is rotatably arranged in the air duct, wherein the wall of the air guide ring is provided with a plurality of disturbance parts which are arranged at intervals, and the air guide ring is constructed to generate diffuse reflection on air supply noise when air flow flows through the air duct so as to reduce the noise. According to the air guide assembly of the air conditioner outdoor unit, the disturbance part is arranged on the air guide ring, so that when air flows pass through the air channel, the air flow projected on the air guide ring is reflected towards all directions, the reflected air flow is irregularly reflected towards different directions due to the fact that the normal directions of all points on the air guide ring are inconsistent, and air flow sound waves in the reflection process counteract partial energy, so that air flow noise can be reduced; and through experimental verification, the power of the fan for driving the axial flow blades to rotate can be reduced, so that the power consumption is reduced, and the market competitiveness of the product is improved.
Description
Technical Field
The utility model relates to an air conditioning equipment technical field particularly, relates to an air condensing units and wind guide assembly thereof.
Background
In the prior art, the outdoor unit of the air conditioner comprises an air guide ring, an axial flow fan and other structures, blades of the axial flow fan are located in the air guide ring, and in the operation process of the axial flow fan, the blades rotate at a high speed to generate airflow noise, the noise is high, the use experience of the outdoor unit of the air conditioner is influenced, and an improved space exists.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide an air guide assembly for an outdoor unit of an air conditioner, which has a simple structure and can reduce airflow noise due to convenient manufacturing.
The utility model discloses still provide an air condensing units.
According to the utility model discloses air condensing units's air guide component, include: a panel; the air guide ring is arranged on the panel, and an air channel is limited in the middle of the air guide ring; the axial flow fan blade is rotatably arranged in the air duct, wherein the wall of the air guide ring is provided with a plurality of disturbance parts which are arranged at intervals, and the air guide ring is constructed into a structure that air flow generates diffuse reflection on air supply noise when flowing through the air duct so as to reduce the noise.
According to the air guide assembly of the air conditioner outdoor unit, the disturbance part is arranged on the air guide ring, so that when air flows pass through the air channel, the air flow projected on the air guide ring is reflected towards all directions, the reflected air flow is irregularly reflected towards different directions due to the fact that the normal directions of all points on the air guide ring are inconsistent, and air flow sound waves in the reflection process counteract partial energy, so that air flow noise can be reduced; and through experimental verification, can also reduce the power of drive axial flow blade pivoted fan to a certain extent after setting up disturbance portion to reduce power consumption, improve the market competition of product.
According to the air guide assembly of the outdoor unit of the air conditioner, at least one part of the plurality of disturbing parts is arranged at intervals along the circumferential direction of the air guide ring; and/or at least one part of the plurality of perturbation parts is arranged at intervals along the axial direction of the wind guide ring.
According to the utility model discloses air condensing units's air guide assembly, disturbance portion is including running through the through-hole of the wall of wind-guiding ring.
Optionally, the through-hole is formed as a circular hole or a polygonal hole.
Optionally, the distance between two points of the through hole furthest along the upper edge is 1mm-10 mm.
According to the utility model discloses air condensing units's air guide assembly, disturbance portion is including protruding, the arch forms the internal surface and the orientation of wind-guiding ring the outstanding setting of axial compressor fan blade.
Optionally, the protrusion forms a spherical shape.
Further, the height of the bulge in the radial direction of the air guide ring is 1mm-10 mm.
According to the utility model discloses air condensing units's air guide assembly, disturbance portion includes the recess, the recess is formed the internal surface of wind-guiding ring and orientation are kept away from the sunken setting of direction of axial compressor fan blade.
According to the utility model discloses air condensing units's air guide assembly, disturbance portion with wind-guiding ring integrated into one piece.
According to the utility model discloses air condensing units's air guide assembly, the wind-guiding ring includes: first water conservancy diversion section and second water conservancy diversion section that follow its axial and arrange in proper order, first water conservancy diversion section is connected the panel with between the second water conservancy diversion section, the internal diameter of second water conservancy diversion section is from being close to one side of first water conservancy diversion section is kept away from one side of first water conservancy diversion section crescent, disturbance portion locates first water conservancy diversion section.
According to the utility model discloses air condensing units of second aspect embodiment, include according to the utility model discloses air condensing units's of first aspect embodiment air guide component through adopting above-mentioned air guide component, has reduced the air current noise, reduces the power of drive axial compressor blade pivoted fan to a certain extent simultaneously to reduce the power consumption, improve the market competition of product.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an air guide assembly according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the structure A of FIG. 1;
fig. 3 is a side view of a wind deflection assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an air guide assembly according to another embodiment of the present invention;
FIG. 5 is an enlarged view of the structure B of FIG. 4;
fig. 6 is a side view of a wind deflection assembly according to another embodiment of the present invention;
fig. 7 is an enlarged view of the structure C of fig. 6.
Reference numerals:
the air guide assembly 100 is provided with a plurality of air guide components,
the number of the panels 10 is such that,
the air guide ring 20, the first guide section 201, the second guide section 202, the disturbance part 21, the through hole 211, the protrusion 212 and the air duct 22.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following describes an air guide assembly 100 of an outdoor unit of an air conditioner according to an embodiment of the present invention with reference to fig. 1 to 7
As shown in fig. 1 to 7, an air guiding assembly 100 according to an embodiment of the present invention includes: the air guide device comprises a panel 10 and an air guide ring 20, wherein the air guide ring 20 is arranged on the panel 10, and an air duct 22 is defined in the middle of the air guide ring 20.
The wind guiding assembly 100 further includes an axial flow fan blade disposed in the wind channel 22, and the axial flow fan blade can rotate in the wind channel 22, wherein the wall of the wind guiding ring 20 is provided with a plurality of disturbing portions 21 arranged at intervals, and when the airflow flows through the wind channel 22, the wind guiding ring 20 can generate diffuse reflection to the air supply noise to reduce the noise.
According to the air guide assembly 100 of the outdoor unit of the air conditioner of the embodiment of the present invention, by providing the disturbance portion 21 on the air guide ring 20, when the air flow passes through the air duct 22, the air flow projected on the air guide ring 20 is reflected in all directions, and because the normal directions of the points on the air guide ring 20 are not consistent, the reflected air flow is irregularly reflected in different directions, and the air flow sound wave in the reflection process offsets a part of energy, so that the air flow noise can be reduced; and through experimental verification, can also reduce the power that drives axial flow blade pivoted fan to a certain extent after setting up disturbance portion 21 to reduce power consumption, improve the market competition of product.
According to an embodiment of the present invention, at least a part of the plurality of disturbing portions 21 are arranged along the circumferential direction of the wind guide ring 20 at intervals, and the projection positions of the part of the disturbing portions 21 on the axis of the wind guide ring 20 may or may not coincide with each other.
According to another embodiment of the present invention, at least a part of the plurality of disturbing portions 21 are arranged at intervals along the axial direction of the wind guide ring 20, and the projection positions of the part of the disturbing portions 21 in the circumferential direction of the wind guide ring 20 may or may not coincide with each other.
In some specific examples, the disturbance portions 21 are arranged at intervals in multiple rows and multiple columns, where the disturbance portions 21 in two adjacent rows do not correspond to each other in any one column, and the disturbance portions 21 in two adjacent columns do not correspond to each other in any one row, any one row may extend in the circumferential direction of the wind guide ring 20, and any one column may extend in the axial direction (the front-rear direction shown in fig. 3) of the wind guide ring 20. For example, the disturbing parts 21 in the previous row and the disturbing parts 21 in the next row are arranged at intervals along the direction inclined to the circumferential direction of the air guide ring 20, so that the arrangement of the disturbing parts 21 is more uniform, the air flow can be subjected to diffuse reflection at each position in the air duct 22, and the air flow noise is further reduced; meanwhile, the disturbance part 21 is prevented from being arranged too tightly to influence the structural stability of the wind guide ring 20.
As shown in fig. 1-3, according to the utility model discloses an embodiment, disturbance portion 21 is including the through-hole 211 that runs through wind-guiding ring 20's wall, through set up through-hole 211 on wind-guiding ring 20, make the air current when wind channel 22, a part air current can pass through-hole 211, reduce the air current noise, a part air current 211 is in the border department of through-hole 211 to each direction reflection, the reflection air current is to the random reflection of different directions, the air current consumes a part of energy in reflection process, thereby can the noise reduction, and the air current is random reflection in air flue 22, the number of reflections has been improved, the reflection route has been increased, the noise has further been reduced.
In some examples, the through hole 211 may be formed as a circular hole, wherein if the diameter of the through hole 211 is too large, the strength of the wind guide ring 20 is low, and the stability and the service life of the wind guide ring 20 are affected; if the diameter of the through hole 211 is too small, the diffuse reflection effect on the air supply noise cannot be generated, and the noise reduction effect is poor, so that the applicant verifies through a large number of experiments that the diameter of the through hole 211 is set between 1mm and 10mm, that is, the diameter of the through hole 211 can be 1mm, 10mm, or any value between 1mm and 10mm, such as 3.5mm and 6mm, thereby not only ensuring the overall structural strength, but also improving the noise reduction effect and improving the use experience.
In other examples, the through hole 211 may be formed as a polygonal hole, wherein a distance between two farthest points along the hole edge of the through hole 211 is 1mm to 10mm, for example, a distance between two farthest points along the hole edge of the quadrangular hole is a distance between diagonals, and a distance between two farthest points along the hole edge of the hexagonal hole is a diameter of a circumscribed circle, so as to ensure a structural strength of the wind guide ring 20 on the basis of ensuring a noise reduction effect, and avoid that the strength of the wind guide ring 20 is too low to cause poor stability of the overall structure, thereby generating extra noise and affecting use experience.
As shown in fig. 4-7, according to an embodiment of the present invention, the disturbing portion 21 includes a protrusion 212, the protrusion 212 is formed on the inner surface of the wind guiding ring 20, and the protrusion 212 protrudes toward the axial-flow fan blade, so that when the airflow passes through the wind channel 22, a part of the airflow can be projected onto the protrusion 212 to be reflected in various directions, and due to the non-uniform normal directions of each point on the protrusion 212, the reflected airflow is randomly reflected in different directions, and the airflow sound wave in the reflection process offsets a part of the energy, thereby reducing the airflow noise.
If the protruding height of the protrusion 212 is too high, it will occupy more space in the air duct 22, and at the same time, it will affect the rotation of the axial-flow fan blade, and at the same time, it will not be beneficial to the dispersion of the airflow; if the protruding height of the protrusion 212 is too low, the effect of diffuse reflection on the air supply noise cannot be generated, and the effect of reducing the noise is poor, so that the applicant verifies through a large number of experiments that the height of the protrusion 212 in the radial direction of the air guide ring 20 is set to be 1mm-10mm, that is, the height of the protrusion 212 can be 1mm, 10mm, or any value between 1mm and 10mm, such as 2.5mm and 6mm, thereby not only ensuring the overall structural strength, but also improving the noise reduction effect and improving the use experience.
In some examples, the protrusions 212 are spherical, that is, the diameter of the spherical protrusions 212 may be any value between 1mm and 10mm, and preferably, the diameter of the protrusions 212 is 3mm, thereby ensuring the overall structural strength, improving the noise reduction effect, and improving the use experience.
According to the utility model discloses an embodiment, disturbance portion 21 includes the recess, and the recess forms at the internal surface of wind-guiding ring 20, and the recess orientation keeps away from the sunken setting of direction of axial compressor fan blade, and the air current is when wind channel 22, and in some air current can be projected the recess, because the normal direction of each point was inconsistent on the recess, lead to the reflection air current to the direction of difference irregularly reflect, and the air current sound wave in the reflection process offsets a part of energy to can reduce the air current noise.
The depth of the groove is limited between 1mm and 10mm, so that the stability of the structure of the air guide ring 20 can be prevented from being influenced by the overlarge depth of the groove, and the effect of reducing the noise of the air flow caused by the overlow depth of the groove can be prevented.
In some examples, the distance between two farthest points of the projection of the plane of the wind guide ring 20 of the disturbance portion 21 is between 1mm and 10mm, and the disturbance portion 21 includes at least one of a through hole 211, a protrusion 212, and a groove, that is, the wind guide ring 20 may have the through hole 211, the protrusion 212, or the groove, the wind guide ring 20 may also have the through hole 211 and the protrusion 212, or the through hole 211 and the groove, or the groove and the protrusion 212, or the wind guide ring 20 may have the through hole 211, the protrusion 212, and the groove, and the through hole 211, the protrusion 212, and the groove are uniformly spaced on the wind guide ring 20.
According to an embodiment of the utility model, disturbance portion 21 and wind-guiding ring 20 integrated into one piece, the through-hole 211 is directly offered at its inner surface to wind-guiding ring 20 at the in-process of making the shaping promptly, or at the protruding 212 of the in-process punching press or the recess of wind-guiding ring 20 manufacturing shaping, also or the wind-guiding ring 20 that has protruding 212 or recess of moulding plastics, through with disturbance portion 21 and wind-guiding ring 20 integrated into one piece for wind-guiding ring 20's structure is more stable, and intensity is high, improves life.
As shown in fig. 3 and 6, according to an embodiment of the present invention, the wind guide ring 20 includes: the first guide section 201 and the second guide section 202 are sequentially arranged along the axial direction of the air guide ring 20, the first guide section 201 is connected between the panel 10 and the second guide section 202, and the inner diameter of the second guide section 202 is gradually increased from one side close to the first guide section 201 to one side far away from the first guide section 201, so that the air duct 22 can be expanded, and the airflow noise can be reduced, wherein the disturbance part 21 is arranged on the first guide section 201, and the disturbance part 21 is arranged on the first guide section 201, so that the manufacturing and forming of the disturbance part 21 and the first guide section 201 are facilitated, the disturbance part 21 is also beneficial to disturbing the flow of the airflow, and when the airflow flows through the air duct 22, the first guide section 201 can generate diffuse reflection on the air supply noise to reduce the noise.
According to the utility model discloses outdoor unit of air conditioner, include according to the utility model discloses outdoor unit of air conditioner's air guide component 100 through adopting above-mentioned air guide component 100, has reduced the air current noise, reduces the power of drive axial compressor blade pivoted fan to a certain extent simultaneously to reduce the power consumption, improve the market competition of product.
A specific embodiment of an outdoor unit of an air conditioner according to the present invention will be described with reference to fig. 4 to 7.
The outdoor unit of the air conditioner comprises an air guide assembly 100 and an axial flow fan, wherein the air guide assembly 100 comprises a panel 10 and an air guide ring 20, the air guide ring 20 is arranged on the panel 10, an air duct 22 is limited in the middle of the air guide ring 20, the axial flow fan is provided with axial flow blades, the axial flow blades are arranged in the air duct 22, and the axial flow blades can rotate in the air duct 22.
The air guide ring 20 comprises a first guide section 201 and a second guide section 202, the first guide section 201 and the second guide section 202 are sequentially arranged along the axial direction of the air guide ring 20, the first guide section 201 is connected between the panel 10 and the second guide section 202, and the inner diameter of the second guide section 202 is gradually increased from one side close to the first guide section 201 to one side far away from the first guide section 201.
The inner surface of the first guide section 201 is provided with a protrusion 212 protruding towards the axial flow fan blade, the protrusion 212 is in a spherical shape, the diameter of the protrusion 212 is 5mm, and the protrusion 212 is integrally formed on the air guide ring 20. Further, the protrusions 212 are arranged at intervals along the circumferential direction of the first flow guiding section 201, and the protrusions 212 are also arranged at intervals along the axial direction of the first flow guiding section 201, so that the protrusions 212 are arranged in multiple rows and multiple columns, wherein the positions of the protrusions 212 in two adjacent rows do not correspond to the positions of the protrusions 212 in any one column, and the positions of the protrusions 212 in two adjacent columns do not correspond to the positions of the protrusions 212 in any one row, that is, the protrusions 212 in each row are arranged in a staggered manner, and the protrusions 212 in each column are also arranged in a staggered.
When the air flow passes through the air duct 22, a part of the air flow can be projected onto the protrusions 212 to be reflected in all directions, the reflected air flow is randomly reflected in different directions due to the fact that the normal directions of all points on the protrusions 212 are inconsistent, and the air flow sound wave in the reflection process offsets a part of energy, so that the air flow noise can be reduced, meanwhile, the arrangement of the protrusions 212 does not influence the overall structural strength of the air guide ring 20, and the outdoor unit is good in structural stability; in addition, through experimental verification, can also reduce axial fan's power to a certain extent after setting up protruding 212 to reduce power consumption, improve the market competition of product.
Other configurations and operations of the outdoor unit of the air conditioner according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features through another feature not directly in contact. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. An air guide assembly of an outdoor unit of an air conditioner, comprising:
a panel;
the air guide ring is arranged on the panel, and an air channel is limited in the middle of the air guide ring;
the axial flow fan blade is rotatably arranged in the air duct,
the wall of the air guide ring is provided with a plurality of disturbance parts which are arranged at intervals, and the air guide ring is constructed to generate diffuse reflection on air supply noise when airflow flows through the air duct so as to reduce the noise.
2. The air guide assembly of an outdoor unit of an air conditioner according to claim 1, wherein at least some of the plurality of disturbance portions are arranged at intervals in a circumferential direction of the air guide ring; and/or at least one part of the plurality of perturbation parts is arranged at intervals along the axial direction of the wind guide ring.
3. The air guide assembly of an outdoor unit of an air conditioner according to claim 1, wherein the disturbing portion includes a through hole penetrating a wall of the air guide ring.
4. The air guide assembly of an outdoor unit of an air conditioner of claim 3, wherein the through hole is formed as a circular hole or a polygonal hole.
5. The air guide assembly of an outdoor unit of an air conditioner as claimed in claim 3, wherein a distance between two points of the through hole which are farthest along the upper edge is 1mm to 10 mm.
6. The outdoor unit of an air conditioner according to any one of claims 1 to 3, wherein the disturbing portion includes a protrusion formed on an inner surface of the air guide ring and protruding toward the axial-flow fan blade.
7. The air guide assembly of an outdoor unit of an air conditioner according to claim 6, wherein the projection is formed in a spherical shape.
8. The air guide assembly of an outdoor unit of an air conditioner as claimed in claim 6, wherein the height of the projection in the radial direction of the air guide ring is 1mm to 10 mm.
9. The outdoor unit of an air conditioner according to any one of claims 1 to 3, wherein the disturbing portion includes a groove formed on an inner surface of the air guide ring and recessed in a direction away from the axial-flow fan blade.
10. The air guide assembly of an outdoor unit of an air conditioner according to claim 1, wherein the disturbing portion is formed integrally with the air guide ring.
11. The air guide assembly of an outdoor unit of an air conditioner as claimed in claim 1, wherein the air guide ring comprises:
first water conservancy diversion section and second water conservancy diversion section that follow its axial and arrange in proper order, first water conservancy diversion section is connected the panel with between the second water conservancy diversion section, the internal diameter of second water conservancy diversion section is from being close to one side of first water conservancy diversion section is kept away from one side of first water conservancy diversion section crescent, disturbance portion locates first water conservancy diversion section.
12. An outdoor unit of an air conditioner, comprising the air guide member of the outdoor unit of an air conditioner according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921231912.4U CN210463320U (en) | 2019-07-31 | 2019-07-31 | Air condensing units and wind guide assembly thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921231912.4U CN210463320U (en) | 2019-07-31 | 2019-07-31 | Air condensing units and wind guide assembly thereof |
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| Publication Number | Publication Date |
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| CN210463320U true CN210463320U (en) | 2020-05-05 |
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| CN201921231912.4U Active CN210463320U (en) | 2019-07-31 | 2019-07-31 | Air condensing units and wind guide assembly thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883099A (en) * | 2021-11-17 | 2022-01-04 | 泛仕达机电股份有限公司 | High-efficient wind-guiding structure and fan thereof |
| CN114233661A (en) * | 2021-12-15 | 2022-03-25 | 上海科泰运输制冷设备有限公司 | Air guide sleeve air ring, axial flow fan and air conditioning unit |
| WO2022068947A1 (en) * | 2021-02-24 | 2022-04-07 | 青岛海尔空调器有限总公司 | Air conditioner |
-
2019
- 2019-07-31 CN CN201921231912.4U patent/CN210463320U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022068947A1 (en) * | 2021-02-24 | 2022-04-07 | 青岛海尔空调器有限总公司 | Air conditioner |
| CN113883099A (en) * | 2021-11-17 | 2022-01-04 | 泛仕达机电股份有限公司 | High-efficient wind-guiding structure and fan thereof |
| CN113883099B (en) * | 2021-11-17 | 2024-03-26 | 泛仕达机电股份有限公司 | High-efficient wind-guiding structure and fan |
| CN114233661A (en) * | 2021-12-15 | 2022-03-25 | 上海科泰运输制冷设备有限公司 | Air guide sleeve air ring, axial flow fan and air conditioning unit |
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