CN210484199U - Centrifugal air duct structure, centrifugal fan and air purification equipment - Google Patents
Centrifugal air duct structure, centrifugal fan and air purification equipment Download PDFInfo
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- CN210484199U CN210484199U CN201920976012.6U CN201920976012U CN210484199U CN 210484199 U CN210484199 U CN 210484199U CN 201920976012 U CN201920976012 U CN 201920976012U CN 210484199 U CN210484199 U CN 210484199U
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Abstract
The utility model discloses a centrifugal air duct structure, a centrifugal fan and air purification equipment, wherein the centrifugal air duct structure comprises an air duct shell, a centrifugal wind wheel and a wind-blocking ring; the air duct shell is provided with a cavity, an air inlet and an air outlet which are communicated with the cavity, the centrifugal wind wheel is rotatably arranged in the cavity, and the air inlet is positioned on the axial side surface of the centrifugal wind wheel; the wind blocking ring is arranged on the air duct shell and is positioned in the cavity, and the wind blocking ring is sleeved on the periphery of the centrifugal wind wheel at intervals in the radial direction; the wind-blocking ring is provided with a notch at the air outlet, and the starting point end of the wind-blocking ring is tangent to the interior of the volute tongue of the air duct shell. The utility model provides a centrifugation wind channel structure, centrifugal fan and air purification equipment aims at solving the technical problem that current centrifugal fan output amount of wind is little, inefficiency and the noise is big.
Description
Technical Field
The utility model relates to an air purification equipment technical field especially relates to a centrifugation wind channel structure, centrifugal fan and air purification equipment.
Background
Along with the improvement of the living standard of people, the air purification equipment is more and more widely used, and the requirements of people on the noise and the energy consumption of the air purification equipment are higher and higher.
When a fan of the existing air purification equipment is designed, in the process of assembling and designing a wind wheel and an air channel, because the end surface of the wind wheel is jumped due to the reasons of dynamic balance of the wind wheel, coaxiality of assembly between the wind wheel and a motor or a transmission shaft and the like, an assembly gap with a certain size exists between the air channel and the wind wheel in the axial direction, and the interference or friction between the wind wheel and the air channel caused by the jumpiness is avoided; however, in the operation process of the wind wheel, part of the air sucked into the air channel by the wind wheel flows out from the assembly gap and is repeatedly sucked by the wind wheel to form turbulent flow, so that the output air quantity of the fan is small, the efficiency is low, and meanwhile, large noise can be generated.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a centrifugation wind channel structure, centrifugal fan and air purification equipment aims at solving the technical problem that current centrifugal fan output amount of wind is little, inefficiency and the noise is big.
In order to achieve the above purpose, the centrifugal air duct structure provided by the utility model comprises an air duct shell, a centrifugal wind wheel and a wind-blocking ring; the air duct shell is provided with a cavity, an air inlet and an air outlet which are communicated with the cavity, the centrifugal wind wheel is rotatably arranged in the cavity, and the air inlet is positioned on the axial side surface of the centrifugal wind wheel; the wind blocking ring is arranged on the air duct shell and is positioned in the cavity, and the wind blocking ring is sleeved on the periphery of the centrifugal wind wheel at intervals in the radial direction; the wind-blocking ring is provided with a notch at the air outlet, and the starting point end of the wind-blocking ring is tangent to the interior of the volute tongue of the air duct shell.
Optionally, the terminal end of the wind deflector is chamfered along the direction of the notch.
Optionally, the axial height of the wind deflector is equal to the height of an assembly gap between the centrifugal wind wheel and the air duct housing in the axial direction.
Optionally, the axial height of the wind deflector is greater than the height of an assembly gap between the centrifugal wind wheel and the air duct housing in the axial direction.
Optionally, the number of the air inlets is two, and the two air inlets are respectively located at two axial sides of the centrifugal wind wheel.
Optionally, the wind blocking rings are sleeved on the peripheries of two axial sides of the centrifugal wind wheel in a radial direction in a spaced manner.
Optionally, there are two centrifugal wind wheels, and the two centrifugal wind wheels are axially connected in series.
Optionally, the two centrifugal wind wheels are respectively provided with the wind-blocking ring close to the periphery of the side edge of the centrifugal wind channel in the radial direction in a spaced manner.
The utility model also provides a centrifugal fan, this centrifugal fan include as above-mentioned arbitrary one centrifugal wind channel structure.
The utility model also provides an air purification equipment, this air purification equipment include as above centrifugal fan.
In the technical scheme provided by the utility model, a wind-shielding ring is arranged on the air duct shell, the wind-shielding ring is positioned in the cavity and is sleeved on the periphery of the centrifugal wind wheel at intervals in the radial direction, and a notch is arranged at the air outlet of the wind-shielding ring; when the centrifugal wind wheel rotates, air sucked due to negative pressure caused by the centrifugal wind wheel is discharged from the air outlet of the air duct shell along the gap, so that air turbulence is avoided, and the air output and the efficiency of the fan are improved; meanwhile, the starting point end of the wind blocking ring is tangent to the interior of the volute tongue of the air duct shell, so that the process that sucked air flows in the wind blocking ring and flows out of the notch is smoother, and the noise of the centrifugal wind wheel during rotation is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the centrifugal air duct structure of the present invention;
FIG. 2 is a schematic cross-sectional structural view of the centrifugal air duct structure of the present invention;
fig. 3 is a schematic top view of the centrifugal air duct structure of the present invention;
fig. 4 is a schematic view of a part of the centrifugal air duct structure of the present invention;
fig. 5 is another schematic view of the centrifugal duct structure according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | |
| 11 | |
30 | Wind- |
| 12 | |
31 | |
| 13 | |
32 | Starting |
| 14 | Volute |
33 | |
| 15 | Fitting clearance |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The utility model provides a centrifugation wind channel structure.
Referring to fig. 1 to 3, in the embodiment of the present invention, the centrifugal air duct structure includes an air duct housing 10, a centrifugal wind wheel 20, and a wind-blocking ring 30; the air duct shell 10 is provided with a chamber 11, and an air inlet 12 and an air outlet 13 which are communicated with the chamber 11, the centrifugal wind wheel 20 is rotatably arranged in the chamber 11, and the air inlet 12 is positioned on the axial side surface of the centrifugal wind wheel 20; the wind-blocking ring 30 is arranged on the air duct shell 10 and is positioned in the chamber 11, and the wind-blocking ring 30 is sleeved on the periphery of the centrifugal wind wheel 20 at intervals in the radial direction; the wind-blocking ring 30 is provided with a gap 31 at the wind outlet 13, and a starting point 32 of the wind-blocking ring 30 is tangent to the interior of the volute tongue 14 of the air duct shell 10.
In the technical solution provided by the present invention, a wind-blocking ring 30 is disposed on the air duct housing 10, the wind-blocking ring 30 is located in the chamber 11, and is sleeved on the periphery of the centrifugal wind wheel 20 at intervals in the radial direction, and the wind-blocking ring 30 is provided with a gap 31 at the air outlet 13; when the centrifugal wind wheel 20 rotates, air sucked due to negative pressure caused by the centrifugal wind wheel 20 is discharged from the air outlet 13 of the air duct shell 10 along the gap 31, so that air turbulence is avoided, and the air output and efficiency of the fan are improved; meanwhile, as the starting point end 32 of the wind-blocking ring 30 is tangent to the interior of the volute tongue 14 of the air duct shell 10, the process that the sucked air flows in the wind-blocking ring 30 and flows out from the notch 31 is smoother, and the noise generated when the centrifugal fan rotates is reduced.
Specifically, the wind blocking ring 30 is sleeved on the periphery of the centrifugal wind wheel 20 at intervals in the radial direction, the wind blocking ring 30 is concentric with the centrifugal wind wheel 20, and the diameter of the wind blocking ring 30 is 3mm to 20mm larger than that of the centrifugal wind wheel 20; in a specific embodiment, the range is preferably 6mm to 10 mm.
In an actual experiment test, the air volume output of the fan without the wind blocking ring 30 is 500cmh, the generated sound is 65dB (A), the air volume output of the fan with the wind blocking ring 30 is 556cmh, and the generated sound is 63dB (A); the design of the wind blocking ring 30 can effectively increase the output air quantity of the fan by about 10-12% and reduce noise.
Referring to fig. 4 and 5, as a preferred embodiment, the terminal end 33 of the wind-blocking ring 30 is chamfered along the direction of the notch 31. When the centrifugal wind wheel 20 rotates, the air sucked by the negative pressure generated by the centrifugal wind wheel 20 is discharged along the notch 31 more smoothly.
Specifically, in one embodiment, the axial height of the wind deflector 30 is equal to the height of the fitting gap 15 between the centrifugal wind wheel 20 and the air duct housing 10 in the axial direction. Therefore, the air sucked into the air duct shell 10 by the centrifugal wind wheel 20 can be effectively prevented from flowing out from the assembling gap 15 between the centrifugal wind wheel 20 and the air duct shell 10, the pressure loss of the air flow is reduced, the working efficiency of the centrifugal wind wheel 20 is improved, and the air supply noise is reduced.
Specifically, in other embodiments, the axial height of the wind deflector 30 is greater than the height of the fitting gap 15 between the centrifugal wind wheel 20 and the air duct housing 10 in the axial direction. Therefore, the air sucked into the air duct shell 10 by the centrifugal wind wheel 20 can be effectively prevented from flowing out from the assembling gap 15 between the centrifugal wind wheel 20 and the air duct shell 10, the pressure loss of the air flow is reduced, the working efficiency of the centrifugal wind wheel 20 is improved, and the air supply noise is reduced.
Based on any one of the above embodiments, specifically, there are two air inlets 12, and the two air inlets 12 are respectively located at two axial sides of the centrifugal wind wheel 20. When the centrifugal wind wheel 20 works, the two air inlets 12 can simultaneously supply air, so that the working efficiency of the centrifugal wind wheel 20 is improved.
Because the centrifugal wind wheel 20 can all be gone into air to axial both sides, its axial both sides with the wind channel casing 10 all can have assembly gap 15, consequently all the spacer sleeve is equipped with in the radial direction of the axial both sides periphery of centrifugal wind wheel 20 the wind-break ring 30. The wind blocking ring 30 can effectively prevent the air sucked into the air duct shell 10 by the centrifugal wind wheel 20 from flowing out from the assembling gap 15 between the centrifugal wind wheel 20 and the air duct shell 10, thereby reducing the pressure loss of the air flow, improving the working efficiency of the centrifugal wind wheel 20 and reducing the air supply noise.
In another embodiment, please refer to fig. 2 again, specifically, there are two centrifugal wind wheels 20, and the two centrifugal wind wheels 20 are axially connected in series; the two centrifugal wind wheels 20 are respectively provided with the wind-blocking rings 30 at intervals in the radial direction close to the periphery of the side edge of the centrifugal wind channel. The wind blocking ring 30 can effectively prevent the air sucked into the air duct shell 10 by the centrifugal wind wheel 20 from flowing out from the assembling gap 15 between the centrifugal wind wheel 20 and the air duct shell 10, thereby reducing the pressure loss of the air flow, improving the working efficiency of the centrifugal wind wheel 20 and reducing the air supply noise.
The utility model also provides a centrifugal fan, this centrifugal fan include like above-mentioned arbitrary embodiment centrifugal wind channel structure, the concrete structure of this centrifugal wind channel structure refers to above-mentioned embodiment, because this centrifugal fan has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary details one by one here.
The utility model discloses still provide an air purification equipment, this air purification equipment include as above-mentioned centrifugal fan, this centrifugal fan's concrete structure refers to above-mentioned embodiment, because this air purification equipment has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. A centrifugal air duct structure is characterized by comprising an air duct shell, a centrifugal wind wheel and a wind-blocking ring; the air duct shell is provided with a cavity, an air inlet and an air outlet which are communicated with the cavity, the centrifugal wind wheel is rotatably arranged in the cavity, and the air inlet is positioned on the axial side surface of the centrifugal wind wheel; the wind blocking ring is arranged on the air duct shell and is positioned in the cavity, and the wind blocking ring is sleeved on the periphery of the centrifugal wind wheel at intervals in the radial direction; the wind-blocking ring is provided with a notch at the air outlet, and the starting point end of the wind-blocking ring is tangent to the interior of the volute tongue of the air duct shell.
2. A centrifugal air duct structure according to claim 1, wherein the terminal end of the wind deflector is chamfered in the direction of the gap.
3. A centrifugal wind channel structure according to claim 2, wherein the axial height of the wind deflector is equal to the height of the fitting gap in the axial direction between the centrifugal wind rotor and the wind channel case.
4. A centrifugal wind channel structure according to claim 2, wherein the axial height of the wind deflector is larger than the height of the fitting gap in the axial direction between the centrifugal wind wheel and the wind channel case.
5. A centrifugal air duct structure according to claim 3 or 4, wherein the number of the air inlets is two, and the two air inlets are respectively located at two axial sides of the centrifugal wind wheel.
6. A centrifugal wind channel structure according to claim 5, characterized in that the windshields are sleeved on the peripheries of two axial sides of the centrifugal wind wheel in a spacing manner in the radial direction.
7. A centrifugal air duct structure according to claim 5, wherein there are two centrifugal wind wheels, and the two centrifugal wind wheels are axially connected in series.
8. A centrifugal wind channel structure according to claim 7, characterized in that the two centrifugal wind wheels are respectively provided with the wind-blocking rings at intervals in the radial direction close to the periphery of the side edge of the centrifugal wind channel.
9. A centrifugal fan comprising a centrifugal duct structure according to any one of claims 1 to 8.
10. An air cleaning apparatus comprising a centrifugal fan according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976012.6U CN210484199U (en) | 2019-06-25 | 2019-06-25 | Centrifugal air duct structure, centrifugal fan and air purification equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976012.6U CN210484199U (en) | 2019-06-25 | 2019-06-25 | Centrifugal air duct structure, centrifugal fan and air purification equipment |
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| Publication Number | Publication Date |
|---|---|
| CN210484199U true CN210484199U (en) | 2020-05-08 |
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| CN201920976012.6U Active CN210484199U (en) | 2019-06-25 | 2019-06-25 | Centrifugal air duct structure, centrifugal fan and air purification equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219830A (en) * | 2019-06-25 | 2019-09-10 | 深圳市普瑞美泰技术有限公司 | Centrifugal air duct structure, centrifugal blower and air cleaning facility |
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2019
- 2019-06-25 CN CN201920976012.6U patent/CN210484199U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219830A (en) * | 2019-06-25 | 2019-09-10 | 深圳市普瑞美泰技术有限公司 | Centrifugal air duct structure, centrifugal blower and air cleaning facility |
| CN110219830B (en) * | 2019-06-25 | 2024-04-05 | 深圳市普瑞美泰技术有限公司 | Centrifugal air duct structure, centrifugal fan and air purification equipment |
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