CN215805384U - Air outlet grille and air outlet device - Google Patents
Air outlet grille and air outlet device Download PDFInfo
- Publication number
- CN215805384U CN215805384U CN202121689147.8U CN202121689147U CN215805384U CN 215805384 U CN215805384 U CN 215805384U CN 202121689147 U CN202121689147 U CN 202121689147U CN 215805384 U CN215805384 U CN 215805384U
- Authority
- CN
- China
- Prior art keywords
- air outlet
- positioning
- air
- frame
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Air-Flow Control Members (AREA)
Abstract
The utility model discloses an air outlet grille, comprising: install the frame on the air outlet, be radial many radial ribs of arranging and extending to on the frame from the center of frame, many with the frame concentric setting and interval connection at the circumference rib on two adjacent radial ribs, the setting of staggering of circumference rib of radial rib both sides, be equipped with contained angle alpha between the center pin of circumference rib cross section and the center pin of air-out grid, and contained angle alpha increases along the radial direction gradually. The utility model also provides an air outlet device, which comprises: the air conditioner comprises a shell provided with an air inlet and an air outlet, and a fan arranged in the shell, wherein the air outlet is provided with an air outlet grid. The utility model can break up the fan outflow through the radial ribs and the circumferential ribs, so that the air outlet is more uniform, the air outlet speed is reduced, the exhaust noise is reduced, and the rectification effect of the fan is ensured.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to an air outlet grille and an air outlet device.
Background
As products such as bladeless fans and dust collectors are more and more popular and accepted by users, core component mixed flow fans are also more and more applied to various industry fields. The fan is generally divided into an axial flow fan, a centrifugal fan and a mixed flow fan according to the airflow direction of an impeller, wherein the airflow direction of the axial flow fan flows in a direction substantially parallel to the axis of the fan, the airflow of the centrifugal fan enters from the axial direction of the impeller and is discharged from the radial direction of the impeller after changing the direction, the mixed flow fan is a product between the axial flow fan and the centrifugal fan, and the fluid of the mixed flow fan enters into the impeller axially and is deflected by the impeller at an inclined angle, so that the gas flowing out of the impeller has both axial and radial components. The mixed flow fan combines the advantages of the axial flow fan and the centrifugal fan, has higher conveying efficiency and wider pressure range, has larger air volume relative to the centrifugal fan, has higher pressure relative to the axial flow fan, has small integral volume, and can replace the traditional centrifugal fan and the traditional axial flow fan in a plurality of fields.
After the mixed flow fan is subjected to diffusion by the rear guide vane, the air outlet is concentrated and the air outlet speed is relatively large. On one hand, the axial air outlet concentration of the air outlet of the fan can lead the air volume distribution on the surface of the heat exchanger at the downstream to be more concentrated, thereby causing uneven heat exchange of the heat exchanger, low heat exchange efficiency, uneven outflow temperature on the surface of the heat exchanger, too low local outflow temperature at the downstream of the heat exchanger, and causing condensation of parts such as an air port, an engineering grid and the like; on the other hand, in an area with a large outlet air speed, along with the obvious increase of the sound power, the unit exhaust noise is large, and when outlet air passes through gaps of fins of the heat exchanger or other small gap characteristics, obvious gap overcurrent noise exists.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air outlet grille and an air outlet device, which are used for solving the problems that the air outlet of a mixed flow fan is concentrated and the air outlet speed is high in the prior art.
The utility model provides an air outlet grid, which comprises: install the frame on the air outlet, be radial many radial ribs of arranging and extending to on the frame from the center of frame, many with the frame concentric setting and interval connection at the circumference rib on two adjacent radial ribs, the setting of staggering of circumference rib of radial rib both sides, be equipped with contained angle alpha between the center pin of circumference rib cross section and the center pin of air-out grid, and contained angle alpha increases along the radial direction gradually.
Preferably, the closer the circumferential ribs are to the central axis of the outlet grille, the smaller the angle α.
Preferably, the angle α satisfies: alpha is more than or equal to 0 degree and less than or equal to 60 degrees.
Preferably, the cross section of the circumferential ribs is in a water drop shape, and the tips of the water drop shape point to the downstream direction of the air outlet.
Preferably, the ratio of the minor axis to the major axis of the drop-shaped cross-section of the circumferential ribs is 0.4.
Preferably, the air outlet grille is in a spherical surface shape with a convex central position.
Further, the air-out grid still includes: the positioning shaft is arranged at the center of the frame, and the positioning ring is arranged on the outer wall of the positioning shaft, and the positioning shaft is provided with an axial through hole.
Further, the air-out grid still includes: at least one positioning column arranged on the positioning ring.
Furthermore, the edge of the frame is provided with positioning pieces which extend outwards at intervals.
Preferably, the cross-section of the circumferential ribs is rhomboid, trapezoidal, oval, crescent or hexagonal.
The utility model also provides an air outlet device, which comprises: the air conditioner comprises a shell and a fan, wherein the shell is provided with an air inlet and an air outlet, the fan is arranged in the shell, and the air outlet is provided with any one of the air outlet grids.
Further, the fan includes: the rear guide impeller is fixedly installed in the shell and is close to the air outlet, the rear guide impeller is provided with a tail cone extending out towards the air outlet, and the tail cone is provided with a first positioning hole which is used for being matched and spliced with a positioning shaft of the air outlet grating.
Furthermore, the end face of the first positioning hole is abutted to the positioning ring of the positioning shaft outer ring, a positioning column extending out of the end face of the first positioning hole is arranged on the positioning ring, and a second positioning hole matched and spliced with the positioning column is arranged on the end face of the first positioning hole.
Furthermore, a circle of positioning groove is arranged on the inner side of the air outlet, and the positioning piece on the edge of the frame extends into the positioning groove.
Further, the air outlet device is a bladeless fan, a dust collector, an air conditioner or a range hood.
The utility model has the beneficial effects that: the design of the circumferential ribs arranged on the two sides of the radial ribs in a staggered mode is adopted, so that the space between the circumferential ribs can be reduced, and the air output of the fan is reduced; the ratio of the short axis to the long axis of the cross section of the circumferential ribs is 0.4, so that the falling of cross section air flow can be effectively reduced, the air outlet efficiency is ensured, and the vibration noise is effectively reduced. Be equipped with contained angle alpha between the center pin of circumference rib cross section and the center pin of air-out grid, and contained angle alpha opens along the air-out downstream direction gradually, is favorable to improving the smooth and easy degree of air-out, and contained angle alpha satisfies: alpha is more than or equal to 0 degree and less than or equal to 60 degrees, the rectification effect of the fan is ensured, the outflow of the fan is scattered, the air outlet is more uniform, the air outlet speed is reduced, and therefore the exhaust noise is reduced.
Drawings
Fig. 1 is a schematic structural view of an air outlet device according to an embodiment of the present invention;
fig. 2 is a first schematic structural view of an air outlet grille according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of an air outlet grille according to an embodiment of the present invention;
fig. 4 is a second schematic structural view of an air outlet grille according to an embodiment of the present invention;
fig. 5 is a third schematic structural view of an air outlet grille according to an embodiment of the present invention.
1-a shell; 2-air inlet; 3, air outlet; 4-back guide vane wheel; 5-air outlet grille; 6-frame; 7-radial ribs; 8-circumferential ribs; 9-positioning the shaft; 10-a positioning ring; 11-a positioning post; 12-positioning element.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the utility model, and does not imply that every embodiment of the utility model must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
The principles and construction of the present invention will now be described in detail with reference to the drawings and examples.
The utility model provides an air outlet grille 5 and an air outlet device, wherein the air outlet device is a bladeless fan, a dust collector, an air conditioner or a range hood. Specifically, the air-out device includes: casing 1 and fan, fan install in casing 1, and casing 1 is equipped with air intake 2 and air outlet 3, and air-out grid 5 is installed to air outlet 3. As shown in fig. 1, the blower includes a rear guide impeller 4, the rear guide impeller 4 is installed in the casing 1 and is close to the air outlet 3, the rear guide impeller 4 is provided with a tail cone, and the tail cone extends out toward the air outlet 3.
As shown in fig. 2, the air outlet grille 5 includes: a frame 6, radial ribs 7 and circumferential ribs 8. The frame 6 has an end face butted with the air outlet 3, the frame 6 is installed on the air outlet 3, the air outlet direction is y direction, the air outlet direction is perpendicular to the plane where the air outlet 3 is located, and the frame 6 is parallel to the plane where the air outlet 3 is located. Radial rib 7 extends to frame 6 along the radial direction of frame 6 from the center of frame 6 on, and radial rib 7 is equipped with many, and many radial ribs 7 are even radial arrangement. Circumferential ribs 8 and frame 6 set up and connect on two adjacent radial ribs 7 with one heart, and circumferential ribs 8 are equipped with many, and radial ribs 7 set up and are parallel to each other with the circumferential ribs 7 interval of one side, and the setting of staggering of circumferential ribs 8 of radial ribs 7 both sides.
As shown in fig. 3, the air outlet grille 5 is a spherical surface with a convex center, an included angle α is formed between the central axis of the cross section of the circumferential rib 8 and the central axis of the air outlet grille 5, and the included angle α gradually increases along the radius direction. The circumferential ribs 8, which are connected to the same side of the radial ribs 7, have different angles of inclination with respect to the central axis of the frame 6. The closer the circumferential ribs 8 are to the central axis of the air outlet grille 5, the smaller the included angle α. The closer the circumferential ribs 8 are to the frame 6, the larger the angle α will be. The included angle alpha satisfies: alpha is more than or equal to 0 degree and less than or equal to 60 degrees, namely the inclination angle between the center line of the circumferential frame strip and the central shaft of the air outlet grille 5 is in the interval of 0 degree to 60 degrees. Beyond this interval, the rectification effect of the air outlet device will be deteriorated.
As shown in fig. 4, it is preferable that the cross section of the circumferential rib 8 is droplet-shaped, and the tip of the droplet-shaped is directed in the downstream direction of the air outlet, and the ratio of the minor axis to the major axis of the cross section of the circumferential rib 8 is 0.4. As an alternative embodiment, the cross section of the circumferential ribs 8 can also adopt a rhombus shape, a trapezoid shape, an oval shape, a crescent shape or a hexagon shape, the crescent cross section has a strong wind guiding effect, the wind guiding effect of the hexagonal cross section is weak, and the wind guiding effect is similar to a diffuse reflection effect, so that the wind speed distribution uniformity of the downstream air outlet in all directions is improved.
As shown in fig. 5, the air outlet grille 5 further includes: the positioning shaft 9, the positioning ring 10, the positioning column 11 and the positioning piece 12 enable the air outlet grille 5 to have a unique positioning position. The positioning shaft 9 and the frame 6 are coaxially arranged, the positioning shaft 9 is provided with an axial through hole, and the air outlet grille 5 can be fixed on the rear guide impeller 4 through the axial through hole. The positioning ring 10 is disposed on the outer circumferential wall of the positioning shaft 9 and used for limiting the insertion depth of the positioning shaft 9. Reference column 11 sets up on holding ring 10, and reference column 11 is equipped with at least one reference column 11 for carry out circumference location to location axle 9, inject the mounted position of location axle 9 on back guide vane wheel 4, prevent that location axle 9 from rotating along the circumferencial direction, influencing the air-out effect. The edge of the frame 6 extends outwards at intervals to form a positioning part 12, the positioning part 12 is used for being installed on the inner side of the air outlet 3, and the frame 6 can be prevented from being separated from the air outlet 3 through the positioning part 12, so that deformation of the air outlet grille 5 is reduced. A first positioning hole (not shown in the figure) is arranged on the tail cone of the rear guide impeller 4 and is used for being matched and inserted with a positioning shaft 9 of the air outlet grille 5, and the positioning shaft 9 is inserted into the first positioning hole. When the locating ring 10 is abutted against the end face of the first locating hole, the axial through hole and the first locating hole are connected through the screw, so that the connection between the air outlet grille 5 and the rear guide impeller 4 is realized. The end face of the first positioning hole is abutted to a positioning ring 10 of the outer ring of the positioning shaft 9, a plurality of positioning columns 11 arranged on the positioning ring 10 extend out of the end face of the first positioning hole, and a second positioning hole (not shown in the figure) is arranged on the end face of the first positioning hole and is used for being matched and spliced with the positioning column 11. A circle of positioning grooves are arranged at the inner side of the air outlet 3, and the positioning piece 12 on the edge of the frame 6 extends into the positioning grooves.
The air outlet grille 5 can change the arrangement of the circumferential ribs 8, change the relative distance of the circumferential ribs 8 and adjust the size of the included angle alpha. According to the utility model, the outflow of the fan can be scattered through the air outlet grille 5, so that the air outlet is more uniform, the uniformity of the air quantity distribution on the surface of the heat exchanger is improved, the heat exchange effect of the heat exchanger is enhanced, the air outlet temperature is more uniform, and the air outlet speed of the fan can be properly reduced, so that the exhaust noise is reduced. The simulation result can lead the air outlet uniformity to be increased by 8 to 10 percent.
The utility model has the beneficial effects that: the design of the circumferential ribs arranged on the two sides of the radial ribs in a staggered mode is adopted, so that the space between the circumferential ribs can be reduced, and the air output of the fan is reduced; the ratio of the short axis to the long axis of the cross section of the circumferential ribs is 0.4, so that the falling of the section airflow can be effectively reduced, the air outlet efficiency is ensured, and the vibration noise is effectively reduced;
be equipped with contained angle alpha between the center pin of circumference rib cross section and the center pin of air-out grid, and contained angle alpha along the radius direction crescent, be favorable to improving the smooth and easy degree of air-out, and contained angle alpha satisfies: alpha is more than or equal to 0 degree and less than or equal to 60 degrees, the rectification effect of the fan is ensured, the outflow of the fan is scattered, the air outlet is more uniform, the air outlet speed is reduced, and therefore the exhaust noise is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (15)
1. Air-out grid includes: install the frame on the air outlet, certainly the center of frame is radially arranges and extends to many radial ribs on the frame, many with the frame sets up with one heart and the interval connection is adjacent two circumference rib on the radial rib, its characterized in that, radial rib both sides the setting of staggering of circumference rib, the center pin of circumference rib cross section with be equipped with contained angle alpha between the center pin of air-out grid, just contained angle alpha increases along the radius direction gradually.
2. An air outlet grille according to claim 1, characterized in that the included angle α is smaller the closer the circumferential ribs are to the central axis of the air outlet grille.
3. An air outlet grille according to claim 1, characterized in that the included angle α satisfies: alpha is more than or equal to 0 degree and less than or equal to 60 degrees.
4. An air outlet grille according to claim 1, characterized in that the cross section of the circumferential ribs is drop-shaped, and the tips of the drop-shaped ribs point in the downstream direction of the air outlet.
5. An air outlet grille according to claim 4 wherein the ratio of the minor axis to the major axis of the drop-shaped cross-section of the circumferential ribs is 0.4.
6. An air outlet grille according to claim 1, characterized in that the air outlet grille is a spherical surface with a convex central position.
7. An air outlet grille according to claim 1, characterized in that the air outlet grille further comprises: the positioning shaft is arranged at the center of the frame, and the positioning ring is arranged on the outer wall of the positioning shaft, and the positioning shaft is provided with an axial through hole.
8. An air outlet grille according to claim 7, characterized in that the air outlet grille further comprises: and the positioning column is arranged on the positioning ring.
9. An air outlet grille according to claim 1 wherein the edge of the frame is spaced apart to define outwardly extending locating members.
10. An air outlet grille according to claim 1, characterized in that the cross section of the circumferential rib is rhombus, trapezoid, ellipse, crescent or hexagon.
11. Air-out device includes: the fan comprises a shell and a fan, wherein the shell is provided with an air inlet and an air outlet, and the fan is arranged in the shell, and is characterized in that the air outlet is provided with the air outlet grid as claimed in claim 7 or 8.
12. The air outlet device of claim 11, wherein the fan comprises: the fixed mounting just is close to in the casing the back impeller of leading of air outlet, back impeller of leading is equipped with the court the tail cone that the air outlet stretches out, be equipped with on the tail cone be used for with the first locating hole of air-out grid's location axle cooperation grafting.
13. The air outlet device according to claim 12, wherein an end surface of the first positioning hole abuts against the positioning ring of the positioning shaft outer ring, the positioning ring is provided with a positioning column extending toward the end surface of the first positioning hole, and an end surface of the first positioning hole is provided with a second positioning hole in fit and insertion connection with the positioning column.
14. The air outlet device of claim 11, wherein a circle of positioning grooves is formed inside the air outlet, and the positioning element on the edge of the frame extends into the positioning grooves.
15. The air outlet device of claim 11, wherein the air outlet device is a bladeless fan, a dust collector, an air conditioner or a range hood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121689147.8U CN215805384U (en) | 2021-07-23 | 2021-07-23 | Air outlet grille and air outlet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121689147.8U CN215805384U (en) | 2021-07-23 | 2021-07-23 | Air outlet grille and air outlet device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215805384U true CN215805384U (en) | 2022-02-11 |
Family
ID=80183980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121689147.8U Active CN215805384U (en) | 2021-07-23 | 2021-07-23 | Air outlet grille and air outlet device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215805384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055487A1 (en) * | 2022-09-16 | 2024-03-21 | 芜湖美的智能厨电制造有限公司 | Grating and combined stove |
-
2021
- 2021-07-23 CN CN202121689147.8U patent/CN215805384U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055487A1 (en) * | 2022-09-16 | 2024-03-21 | 芜湖美的智能厨电制造有限公司 | Grating and combined stove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100937929B1 (en) | Stator of Axial flow fan shroud | |
| JP3110205B2 (en) | Centrifugal compressor and diffuser with blades | |
| US20100189557A1 (en) | Impeller and fan | |
| US10052931B2 (en) | Outdoor cooling unit in vehicle air-conditioning apparatus | |
| CN109611356B (en) | Backward centrifugal fan | |
| KR20150136935A (en) | Centrifugal fan | |
| CN215805384U (en) | Air outlet grille and air outlet device | |
| RU2282755C2 (en) | Centrifugal fan | |
| CN213450988U (en) | Centrifugal impeller and ventilator thereof | |
| CN108005956B (en) | Volute structure for automobile air conditioner | |
| CN212378124U (en) | Flow guide ring and air conditioner | |
| WO2023202327A1 (en) | Combined fan blade structure and air outlet device | |
| CN210568923U (en) | Novel air purifier | |
| CN109595197B (en) | Fan | |
| CN108953222B (en) | Centrifugal impeller | |
| CN215444436U (en) | High-circulation and low-pressure-loss radial and axial integrated diffuser | |
| CN113883099B (en) | High-efficient wind-guiding structure and fan | |
| CN212003641U (en) | Centrifugal fan | |
| CN211474520U (en) | Axial flow wind wheel and air conditioner | |
| CN100380000C (en) | Casing seat of axial-flow radiating fan | |
| KR100599860B1 (en) | Hybrid Multi-stage Axial Fan Provided with a Hood | |
| CN219622931U (en) | Centrifugal fan and centrifugal wind wheel thereof | |
| CN214660955U (en) | Fan assembly and air conditioner with same | |
| CN110762050A (en) | Centrifugal fan impeller | |
| CN220769786U (en) | Current collector, fan and range hood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |