CN108954761B - Air inlet grille, air inlet assembly and air purifier thereof - Google Patents
Air inlet grille, air inlet assembly and air purifier thereof Download PDFInfo
- Publication number
- CN108954761B CN108954761B CN201810735537.0A CN201810735537A CN108954761B CN 108954761 B CN108954761 B CN 108954761B CN 201810735537 A CN201810735537 A CN 201810735537A CN 108954761 B CN108954761 B CN 108954761B
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- air
- air inlet
- air intake
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- 239000012530 fluid Substances 0.000 claims abstract description 32
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Abstract
The application discloses an air inlet grille, an air inlet assembly and an air purifier thereof, wherein the air inlet grille comprises an air inlet grille body, at least one air inlet guide structure body for cutting and guiding fluid at the position is arranged on the air inlet grille body, the cross section of the air inlet guide structure body on an axial surface passing through the geometric center of an air channel inlet is of a strip shape, and an angle c between the extending direction of the strip shape and a plane where the air channel inlet is positioned is an obtuse angle. According to the air inlet grille, the air inlet assembly and the air purifier thereof, provided by the application, the flow guide structure with a certain structure arranged at the air inlet can be used for reducing the inlet vortex of fluid, so that the broadband noise can be reduced, the low-frequency sound can be reduced, and the energy loss can be reduced while the larger air inlet quantity and the air inlet efficiency are ensured. In addition, the device can prevent mechanical faults and damages, and has higher reliability, better protection level and longer service life.
Description
Technical Field
The application relates to the field of fluid dynamics application, in particular to an air inlet grille, an air inlet assembly and an air purifier thereof.
Background
Many devices (such as air purifiers, air conditioners and the like) are provided with an air inlet channel, but due to unreasonable structural design of an air inlet position, a series of problems such as noise pollution, high system energy consumption and the like are caused.
For example, with the rapid development of economy, haze pollution is also becoming more serious, and air management problems are difficult to solve at one time. In addition, as the living standard increases, people have a higher and higher degree of health care. In this social context, consumer demand for air purifiers is gradually changing to rigid demand. Meanwhile, under the background of strong market competition, higher requirements are also put forward on various performance indexes of the purifier.
At present, most of air inlet modes of purifiers in the market adopt parallel air inlet, a certain angle exists when actual fluid flows into an air duct, when the air inlet quantity is large, the air flow easily deforms or twists a grating plate, larger friction can be generated between the air flow and the grating, and buzzing and howling are easy to generate. At the same time, the energy consumption of the system is increased. For example, the mainstream filtering air purifier in the market adopts a motor to drive an impeller to generate power to suck and supply air, so that forced convection is formed, and air is filtered through a filter screen. The impeller of such an air purifier has the above-mentioned drawbacks at high rotational speeds. Therefore, a technical scheme capable of overcoming the air inlet defect is urgently needed.
Disclosure of Invention
Accordingly, an object of the present application is to provide an air intake grille, an air intake assembly and an air purifier thereof, which can overcome technical defects such as noise pollution and energy consumption.
In order to achieve the above purpose, on one hand, the present application adopts the following technical scheme:
in a first aspect, an air inlet grille is provided, and the air inlet grille is arranged at an inlet of a runner, and comprises an air inlet grille body, wherein at least one air inlet flow guide structure body for cutting and guiding fluid at the position is arranged on the air inlet grille body, the axial section of the air inlet flow guide structure body passing through the geometric center of an air channel inlet is in a strip shape, and an angle c between the extension direction of the strip shape and the plane of the air channel inlet is an obtuse angle.
Preferably, the air inlet guide structure is arranged on the fluid downstream side of the air inlet grille body, or the air inlet guide structure is arranged on the same surface of the air inlet grille body.
Preferably, the air inlet guide structure is an annular air inlet guide structure body, and two adjacent annular air inlet guide structures form an annular guide channel.
Preferably, the annular inlet air guide structure is configured as a horn, and the small mouth end of the horn is arranged at the downstream side of fluid flow.
Preferably, the annular air inlet guide structure is constructed such that the wall thickness thereof gradually increases from the large mouth end to the small mouth end of the horn shape.
Preferably, the flow guiding side surface of the annular air inlet flow guiding structure body is configured as a conical surface, and the angle c between the conical surface and the plane of the air channel inlet is 100-130 degrees.
Preferably, in the radial direction of the air inlet, the angle between the flow guiding side surface of the annular air inlet flow guiding structure body arranged outside the annular flow guiding channel and the plane structure of the air channel inlet is larger than the angle between the flow guiding side surface of the annular air inlet flow guiding structure body arranged inside the annular flow guiding channel and the plane structure of the air channel inlet.
Preferably, the angle a of the inner side surface and the outer side surface of the annular air inlet guide structure body at the large opening end is 0.5-3 degrees.
Preferably, at least one of the large mouth end and the small mouth end of the horn shape is provided with a round angle.
Preferably, the air inlet grille body is provided with an air guide ring at the radial outer edge, and the air inlet grille body comprises a plurality of strip-shaped connecting pieces which are arranged at the inner side of the air guide ring and distributed radially.
Preferably, a plurality of the strip-shaped connecting pieces are uniformly distributed inside the wind guide ring in the radial direction, and an angle b formed between the adjacent strip-shaped connecting pieces is 7.2-9 degrees.
On the other hand, an air inlet assembly is provided, which comprises an air inlet channel, and the fluid inlet of the air inlet channel is provided with the air inlet grille.
Preferably, the air inlet assembly comprises an impeller and an air inlet grille comprising an air guide ring, the impeller is arranged at the fluid outlet side of the air inlet grille, and the fluid outlet end of the air guide ring is sleeved at the inner side of the air inlet end of the impeller and is in clearance fit with the inner side of the air inlet end of the impeller.
Preferably, the radial clearance d between the fluid outlet end of the air guide ring and the air inlet end of the impeller is set to be 2-5mm, and/or the insertion depth e of the fluid outlet end of the air guide ring is set to be 2-5mm.
Preferably, the air inlet assembly further comprises an air duct shell, and the air duct shell and the air inlet grille are integrally formed.
In a third aspect, an air cleaner is provided that includes the aforementioned air intake assembly disposed at an air intake end of the air cleaner.
According to the air inlet grille, the air inlet assembly and the air purifier thereof, provided by the application, the flow guiding structure with a certain structure arranged at the air inlet can reduce the inlet vortex of fluid, ensure large air inlet quantity and air inlet efficiency, simultaneously reduce broadband noise, lower low-frequency sound and reduce energy loss. In addition, the device can prevent mechanical faults and damages, and has higher reliability, better protection level and longer service life.
Drawings
The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments of the present application with reference to the accompanying drawings, in which:
FIG. 1 illustrates a schematic view of an air intake grill according to an embodiment of the present application;
FIG. 2 shows a partial enlarged schematic view A of FIG. 1;
FIG. 3 illustrates a schematic view of an air intake grill of the present application including an air duct housing;
FIG. 4 shows a schematic view of an air intake assembly according to an embodiment of the present application;
FIG. 5 shows a partial enlarged schematic view B of FIG. 4;
FIG. 6 shows an assembled schematic view of an air intake assembly;
fig. 7 shows a front view of the application in an assembled state.
In the drawing the view of the figure,
1. an air inlet grille body; 2. an air inlet guide structure; 4. an air guide ring; 5. a bar-shaped connecting member; 6. an impeller; 7 an air duct shell; 8, an air inlet grille.
Detailed Description
The present application is described below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, certain specific details are set forth in order to avoid obscuring the present application, and in order to avoid obscuring the present application, well-known methods, procedures, flows, and components are not presented in detail.
Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
The application aims to provide an air inlet grille with an air inlet guide structure body with a guide function at an air inlet of equipment comprising an air inlet channel, so that the setting angle of the air inlet guide structure body is consistent or basically consistent with the air inlet angle, and inlet flocculation leveling is uniformly cut into a plurality of equal parts, so that air flow can uniformly enter the air inlet channel (under the action of the air inlet guide structure body of an air inlet component comprising a wind wheel, the air flow uniformly enters the wind wheel), and further the purposes of reducing noise, reducing energy loss, improving reliability, protecting grade and prolonging service life can be achieved.
As shown in the specific embodiment of fig. 1 and 2, an air inlet grille is provided and is disposed at an inlet of an air duct, and the air inlet grille includes an air inlet grille body 1, and five air inlet diversion structures 2 for cutting and diversion of fluid at positions on the air inlet grille body 1 are disposed, that is, the air inlet diversion structures 2 cut and divert fluid flowing through positions on the air inlet diversion structures 2. The cross section of the air inlet guide structure body 2 on the axial surface passing through the geometric center of the air channel inlet (namely the surface comprising the axis of the air channel inlet passing through the geometric center of the air channel inlet) is in a strip shape, and the angle c between the extending direction of the strip shape and the plane of the air channel inlet is an obtuse angle. In the specific implementation, two, three, four or other air inlet guide structures 2 may be selectively disposed on the air inlet grille body 1, and two adjacent air inlet guide structures 2 may form a guide channel.
Wherein, the air inlet guide structure body 2 is arranged on the same surface of the air inlet grille body 1. As an alternative embodiment, the air intake guide structure 2 may be selectively disposed on the fluid downstream side and/or the fluid upstream side (not shown) of the air intake grill body 1.
The air inlet guide structure body 2 is an annular air inlet guide structure body, and two adjacent annular air inlet guide structure bodies form an annular guide channel. As an alternative embodiment, the air intake guiding structure 1 may be alternatively a closed annular air intake guiding structure or an unsealed annular air intake guiding structure (not shown). Preferably, the annular inlet air guide structure is configured as a horn, and the small mouth end of the horn is arranged at the downstream side of fluid flow. And further preferably, the annular air inlet guide structure is constructed such that the wall thickness thereof gradually increases from the large mouth end to the small mouth end of the horn shape. In order to further improve the flow guiding effect, it may be further preferable that the flared large-mouth end and the flared small-mouth end are rounded and smoothly transition with the side wall.
In addition, the flow guiding side surface of the annular air inlet flow guiding structure body 2 is made into a conical surface, and the included angle c between the conical surface and the plane where the air channel inlet is positioned is 100-130 degrees. Further preferably, in the radial direction of the air inlet, the angle between the flow guiding side surface of the annular air inlet flow guiding structure body arranged outside the annular flow guiding channel and the plane structure of the air channel inlet is larger than the angle between the flow guiding side surface of the annular air inlet flow guiding structure body arranged inside the annular flow guiding channel and the plane structure of the air channel inlet. Therefore, the air inlet area can be effectively increased, and the larger air inlet quantity and the higher air inlet efficiency are further ensured.
The angle a of the inner side surface and the outer side surface of the annular air inlet guide structure body 2 at the large opening end is 0.5-3 degrees, so that a knife edge is formed, fluid can be effectively divided into a plurality of parts, the corners of the air flow are excessively smooth, the speed change of the air flow in the area is gentle, and further, when air inlet is reduced, the generated vortex flow is not easy to generate broadband abnormal sound, and meanwhile, the energy loss can be reduced.
The air inlet grille body 1 is provided with an air guide ring 4 at the radial outer edge, and the air inlet grille body 1 comprises a plurality of strip-shaped connecting pieces 5 which are arranged at the inner side of the air guide ring 4 and are distributed radially. The plurality of strip-shaped connecting pieces 5 are uniformly distributed on the inner side of the wind guide ring 4 in the radial direction, and the angle b between the adjacent strip-shaped connecting pieces 5 is 7.2-9 degrees. Therefore, the gap layout of the air inlet grille 8 is more reasonable, and the mechanical failure or damage caused by the fact that larger foreign matters enter the air inlet channel from the air inlet can be effectively avoided while the larger air inlet amount is ensured, so that the safety protection level of the air inlet channel is effectively improved. And a wind guiding round angle is arranged at the wind guiding inlet of the wind guiding ring 4 so as to realize better wind guiding effect. In order to increase the air intake area, the strip-shaped connecting piece 5 can be constructed into a concave structure as shown in fig. 1.
The air inlet grille provided by the application can not deform or distort even under the working condition of large air inflow. Meanwhile, friction between the air flow and the air inlet grille can be effectively reduced, and buzzing or whistling is further avoided or reduced.
As shown in fig. 3 to 7, the present application further provides an air intake assembly, which includes an air intake channel, and the air intake grille 8 is disposed at a fluid inlet of the air intake channel. The air inlet assembly further comprises an air channel shell 7, and the air channel shell 7 is connected with the air inlet grille 8 in a matched mode. Preferably, the air duct housing 7 is integrally provided with the air inlet grille 8. The air inlet grille 8 and the air channel shell 7 are designed into a whole, so that the production cost can be reduced, and the assembly efficiency can be improved.
The air inlet assembly can further comprise an impeller 6, the impeller 6 is arranged on the fluid outlet side of the air inlet grille 8, and the fluid outlet end of the air guide ring 4 is sleeved on the inner side of the air inlet end of the impeller 6 and is in clearance fit with the inner side of the air inlet end of the impeller 6. In a specific implementation, preferably, the radial gap d between the fluid outlet end of the air guiding ring 4 and the air inlet end of the impeller 6 is set to be 2-5mm, and still more preferably, the insertion depth e of the fluid outlet end of the air guiding ring 4 is set to be 2-5mm, so as to further realize the functions of flow guiding and flow collecting, and further achieve the effect of improving the air inlet efficiency of the impeller 6. Wherein the impeller 6 may further be provided as a wind wheel.
The application also provides an air purifier, which comprises the air inlet assembly, wherein the air inlet assembly is arranged at the air inlet end of the air purifier.
It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.
It will be understood that the above-described embodiments are merely illustrative and not restrictive, and that all obvious or equivalent modifications and substitutions to the details given above may be made by those skilled in the art without departing from the underlying principles of the application, are intended to be included within the scope of the appended claims.
Claims (13)
1. The air inlet grille is arranged at the air channel inlet and comprises an air inlet grille body, and is characterized in that at least one air inlet flow guide structure body for cutting and guiding fluid at the position is arranged on the air inlet grille body, the cross section of the air inlet flow guide structure body on the axial surface passing through the geometric center of the air channel inlet is of a strip shape, and an angle c between the extending direction of the strip shape and the plane where the air channel inlet is positioned is an obtuse angle;
the air inlet guide structure body is arranged on the fluid downstream side of the air inlet grille body;
the air inlet grille body is provided with an air guide ring at the radial outer edge, and comprises a plurality of strip-shaped connecting pieces which are arranged at the inner side of the air guide ring and distributed radially; the strip-shaped connecting pieces are uniformly distributed on the inner side of the air guide ring in the radial direction, and the angle b formed between the adjacent strip-shaped connecting pieces is 7.2-9 degrees; the strip-shaped connecting piece is constructed into a concave structure.
2. The air inlet grille according to claim 1, wherein the air inlet guide structures are annular air inlet guide structures, and two adjacent annular air inlet guide structures form an annular guide channel.
3. The air intake grill of claim 2, wherein the annular air intake baffle structure is configured in a horn shape, and the small mouth end of the horn shape is disposed on the downstream side of the fluid flow.
4. An air inlet grille according to claim 3, wherein the annular air inlet guide structure is configured such that the wall thickness thereof gradually increases from a large mouth end to a small mouth end of the horn shape.
5. The air inlet grille according to claim 4, wherein the flow guiding side surface of the annular air inlet flow guiding structure is configured as a conical surface, and the angle c between the conical surface and the plane of the air channel inlet is 100-130 degrees.
6. The air inlet grille according to claim 5, wherein an angle between a flow guiding side surface of the annular air inlet flow guiding structure arranged outside the annular flow guiding channel and a plane structure of the air channel inlet is larger than an angle between a flow guiding side surface of the annular air inlet flow guiding structure arranged inside the annular flow guiding channel and a plane structure of the air channel inlet in a radial direction of the air inlet.
7. The air intake grill of claim 5, wherein the inner and outer sides of the annular air intake baffle structure are configured at a large mouth end at an angle a of 0.5 ° -3 °.
8. The air intake grill of any one of claims 3 to 7, wherein at least one of the flared large and small mouth ends is rounded.
9. An air intake assembly comprising an air intake passage, wherein an air intake grill according to any one of claims 1 to 8 is provided at a fluid inlet of the air intake passage.
10. The air intake assembly of claim 9, further comprising an impeller disposed on the fluid outlet side of the air intake grille, the fluid outlet end of the air guide ring being disposed inside the air intake end of the impeller in a clearance fit with the inside of the air intake end of the impeller.
11. The air intake assembly of claim 10, wherein the radial clearance d between the fluid outlet end of the air guide ring and the air intake end of the impeller is set to 2-5mm, and/or the insertion depth e of the fluid outlet end of the air guide ring is set to 2-5mm.
12. The air intake assembly of claim 11, further comprising an air duct housing, the air duct housing being integrally formed with the air intake grill.
13. An air cleaner comprising an air intake assembly according to any one of claims 9 to 12 disposed at an air intake end of the air cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735537.0A CN108954761B (en) | 2018-07-06 | 2018-07-06 | Air inlet grille, air inlet assembly and air purifier thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735537.0A CN108954761B (en) | 2018-07-06 | 2018-07-06 | Air inlet grille, air inlet assembly and air purifier thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108954761A CN108954761A (en) | 2018-12-07 |
| CN108954761B true CN108954761B (en) | 2023-11-24 |
Family
ID=64484330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810735537.0A Active CN108954761B (en) | 2018-07-06 | 2018-07-06 | Air inlet grille, air inlet assembly and air purifier thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108954761B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115264719B (en) * | 2021-04-29 | 2024-04-12 | 广东美的环境电器制造有限公司 | Air treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007038126A (en) * | 2005-08-03 | 2007-02-15 | Hitachi Appliances Inc | Air cleaner |
| CN102620352A (en) * | 2012-04-16 | 2012-08-01 | 李力游 | Indoor unit of embedded air conditioner |
| CN203928204U (en) * | 2014-06-27 | 2014-11-05 | 珠海格力电器股份有限公司 | Air-conditioner outdoor unit and air outlet grate thereof |
| CN205156270U (en) * | 2015-12-03 | 2016-04-13 | 江西姑苏净化科技有限公司 | Initiative supply -air outlet |
| CN105823144A (en) * | 2016-05-18 | 2016-08-03 | 珠海格力电器股份有限公司 | Air conditioner, fan and grating |
| CN206944426U (en) * | 2017-05-02 | 2018-01-30 | 北京三五二环保科技有限公司 | Air duct noise-reducing structure |
| CN208652863U (en) * | 2018-07-06 | 2019-03-26 | 珠海格力电器股份有限公司 | A kind of air-inlet grille, air intake assembly and its air purifier |
-
2018
- 2018-07-06 CN CN201810735537.0A patent/CN108954761B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007038126A (en) * | 2005-08-03 | 2007-02-15 | Hitachi Appliances Inc | Air cleaner |
| CN102620352A (en) * | 2012-04-16 | 2012-08-01 | 李力游 | Indoor unit of embedded air conditioner |
| CN203928204U (en) * | 2014-06-27 | 2014-11-05 | 珠海格力电器股份有限公司 | Air-conditioner outdoor unit and air outlet grate thereof |
| CN205156270U (en) * | 2015-12-03 | 2016-04-13 | 江西姑苏净化科技有限公司 | Initiative supply -air outlet |
| CN105823144A (en) * | 2016-05-18 | 2016-08-03 | 珠海格力电器股份有限公司 | Air conditioner, fan and grating |
| CN206944426U (en) * | 2017-05-02 | 2018-01-30 | 北京三五二环保科技有限公司 | Air duct noise-reducing structure |
| CN208652863U (en) * | 2018-07-06 | 2019-03-26 | 珠海格力电器股份有限公司 | A kind of air-inlet grille, air intake assembly and its air purifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108954761A (en) | 2018-12-07 |
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