CN113847281B - Air supply components and bladeless fans - Google Patents
Air supply components and bladeless fans Download PDFInfo
- Publication number
- CN113847281B CN113847281B CN202111278448.6A CN202111278448A CN113847281B CN 113847281 B CN113847281 B CN 113847281B CN 202111278448 A CN202111278448 A CN 202111278448A CN 113847281 B CN113847281 B CN 113847281B
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- Prior art keywords
- air
- air duct
- duct
- volute
- air outlet
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- 230000000694 effects Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
本发明公开了一种送风组件及无叶风扇，其中送风组件包括蜗壳，蜗壳侧面设有沿切线方向设置的后风道；后风道端部和蜗壳连通，后风道端部两侧分别设有导风壁和前风道；前风道位于后风道端部远离蜗壳一侧并形成有出风口；导风壁位于后风道端部靠近蜗壳一侧，以将蜗壳吸入的空气导向出风口。本发明所述忽的送风组件，出风口与导风壁的距离增加，降低空腔噪声；高速气流进入后风道，打到导风壁上，经狭窄风道挤压的气流从出风口均匀流出。
The present invention discloses an air supply component and a bladeless fan, wherein the air supply component includes a volute, and a rear air duct arranged along a tangent direction is provided on the side of the volute; the end of the rear air duct is connected to the volute, and an air guide wall and a front air duct are respectively provided on both sides of the end of the rear air duct; the front air duct is located at the end of the rear air duct away from the volute and has an air outlet; the air guide wall is located at the end of the rear air duct close to the volute to guide the air sucked by the volute to the air outlet. In the air supply component of the present invention, the distance between the air outlet and the air guide wall is increased, and the cavity noise is reduced; the high-speed airflow enters the rear air duct and hits the air guide wall, and the airflow squeezed by the narrow air duct flows out evenly from the air outlet.
Description
Technical Field
The invention belongs to the field of air supply, and particularly relates to an air supply assembly and a bladeless fan.
Background
The bladeless fan is also called an air doubling machine, can generate natural and continuous cool air, and can exhaust the cool air through the air outlet of the air duct, so that the flow of the cool air is increased, and the bladeless fan is popular with consumers due to the characteristics of safety, cleanliness, attractive appearance and the like.
The existing bladeless fan comprises a base, wherein the base is connected with an air duct, a rotatable wind wheel is arranged in the base, and air enters from an air inlet on the side face of the base and is discharged from an air outlet of the air duct through rotation of the wind wheel, so that the effect of 'bladeless' air outlet is achieved.
However, the noise is large and the wind is small, which is always a user's problem and seriously affects the user's experience. The centrifugal fan is characterized in that an outlet of the centrifugal fan is arranged at the same side of the air outlet, gas which rotates at high speed directly impacts an outlet grille and swirls in an air duct to generate vortex, so that air flow is blocked in the air duct and cavity returning noise is generated. Meanwhile, an upward velocity component exists in the air flow of the air outlet part of the existing structure, the upstream velocity of the air flow is larger, the direction is inclined upwards, the air outlet is inclined, a reasonable flow guiding structure is arranged in the air duct to realize uniform air outlet, the pressure loss in the air duct is larger, the air duct parts are more, and the structure is complex.
Disclosure of Invention
The invention provides an air supply assembly and a bladeless fan, which are used for solving the technical problem of air outlet noise in the background art.
In order to achieve the above purpose, the specific technical scheme of the air supply assembly and the bladeless fan of the invention is as follows:
the air supply assembly comprises a volute, a rear air duct arranged in the tangential direction is arranged on the side face of the volute, the end portion of the rear air duct is communicated with the volute, an air guide wall and a front air duct are respectively arranged on two sides of the end portion of the rear air duct, the front air duct is located on one side, far away from the volute, of the end portion of the rear air duct, an air outlet is formed in the front air duct, and the air guide wall is located on one side, close to the volute, of the end portion of the rear air duct, so that air sucked by the volute is guided to the air outlet.
Further, a buffer air duct extending along the tangential direction of the spiral case is formed between the spiral case and the rear air duct, and the rear air duct is communicated with the spiral case through the buffer air duct.
Further, the buffer air duct is formed with an extending part which is obliquely arranged, and the front air duct is communicated with the volute through the extending part.
Furthermore, the two air channels are arranged on the spiral case oppositely, and the buffer air channel is provided with a flow dividing plate which enables air in the buffer air channel to uniformly enter the two air channels.
Further, a rotatable wind wheel is arranged in the volute.
Further, the diameter D of the wind wheel and the horizontal distance L between the center of the impeller and the adjacent air outlet satisfy the condition that L is less than or equal to 1.3D and less than or equal to 1.6D.
Further, the diameter D of the wind wheel and the height difference H between the center of the impeller and the adjacent air outlet satisfy the condition that H is less than or equal to 1.5D and less than or equal to 1.8D.
Further, the front air duct forms an air outlet grille arranged along the extending direction at one side far away from the rear air duct, and the air outlet is arranged on the air outlet grille.
Further, the air outlet is arranged along the vertical direction of the air guide wall.
A bladeless fan comprises the air supply assembly.
The air supply assembly and the bladeless fan have the advantages that the distance between the air outlet and the air guide wall is increased, cavity noise is reduced, high-speed air flows enter the rear air duct and are beaten on the air guide wall, the air flows extruded by the narrow air duct uniformly flow out of the air outlet, the air duct inner structure is simplified, the pressure loss in the air duct from the upstream air flow to the downstream air flow is reduced, parts are fewer, assembly is easier, and production efficiency is improved.
Drawings
FIG. 1 is a schematic view of a bladeless fan according to the present invention;
FIG. 2 is a schematic illustration of a bladeless fan according to the present invention in semi-section;
FIG. 3 is a cross-sectional view of a bladeless fan of the present invention;
FIG. 4 is a graph of a conventional bladeless fan spectrum;
fig. 5 is a graph of a bladeless fan according to the present invention.
The figure indicates:
1. the wind turbine comprises a volute, 11, an air inlet, 12, a wind wheel, 2, a buffer air duct, 21, an extension part, 22, a splitter plate, 3, a rear air duct, 31, an air guide wall, 32, an air guide curved surface, 4, a front air duct, 41, an air outlet grille, 42 and an air outlet.
Detailed Description
For a better understanding of the objects, structures and functions of the present invention, an air supply assembly and bladeless fan according to the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the air supply assembly of the present invention is driven by the centrifugal fan to supply air from the air inlet 11 and discharge the air from the air outlet 42 along the air duct.
Specifically, the air supply assembly includes a volute 1. The spiral case 1 is in a surface column shape, and air inlets 11 are formed at two ends of the spiral case 1. A wind wheel 12 as a driver is arranged in the volute 1, and the wind wheel 12 is a centrifugal wind wheel 12, so that the wind wheel 12 rotates, sucks air from the air inlet 11 and is discharged outwards. In general, the wind wheel 12 is a centrifugal wind wheel 12, and by doing work on the fluid, the speed energy and pressure potential energy of the fluid are increased, forming high-speed airflow, and providing sufficient air volume and air pressure.
The spiral case 1 side is equipped with the export that sets up along tangential direction, and the exit linkage has buffer wind channel 2, and buffer wind channel 2 end-to-end connection has two wind channels to through buffer wind channel 2, the wind channel length of whole air supply assembly is prolonged.
The tail end of the buffer air duct 2 extends along the tangential direction of the volute 1 to form an air duct. The air duct comprises a rear air duct 3 and a front air duct 4. The rear air duct 3 is also arranged along the tangential direction of the volute 1, the end part of the rear air duct 3 is communicated with the outlet of the volute 1 through the buffer air duct 2, and the two sides of the end part of the rear air duct 3 are respectively provided with an air guide wall 31 and a front air duct 4. The front air duct 4 is located at the side of the end of the rear air duct 3 away from the volute 1 and is formed with an air outlet 42. The air guide wall 31 is positioned at one side of the end of the rear air duct 3 close to the volute 1 to guide the air sucked by the volute 1 to the air outlet 42.
Specifically, the front air duct 4 forms the air outlet grating 41 arranged along the extending direction on one side far away from the rear air duct 3, the air outlet 42 is arranged between the air outlet gratings 41, and the air outlet 42 is arranged along the vertical direction of the air guide wall 31, so that the air flow of the air outlet grating 41 is smoother on the premise of ensuring the air outlet pressure and the air speed, the air outlet deflection phenomenon is lightened, and the effect of uniform air supply can be achieved.
The buffer air duct 2 is formed with an extending part 21 which is obliquely arranged, and the extending part 21 is communicated with the front air duct 4 so as to ensure the air quantity of the front air duct 4.
The diameter D of the wind wheel 12 and the horizontal distance L between the center of the impeller and the adjacent air outlet 42 are 1.3D less than or equal to L less than or equal to 1.6D, and the diameter D of the wind wheel 12 and the height difference H between the center of the impeller and the adjacent air outlet 42 are 1.5D less than or equal to H less than or equal to 1.8D. Thereby guarantee the length of buffering wind channel 2 for the stroke extension of air current in the wind channel can guarantee simultaneously that the air current after wind wheel 12 accelerates can strike on the wind-guiding wall 31, avoid the air current to directly strike air-out grid 41, with this reduction cavity noise, promote user experience.
And the end of the rear air duct 3 far away from the volute 1 is provided with an air guiding curved surface 32, and the air guiding curved surface 32 extends from the tail end of the air guiding wall 31 to the end of the front air duct 4 along an arc line.
Generally, two air channels are oppositely arranged, so that the two air channels are oppositely arranged and connected in parallel on the buffer air channel 2. Correspondingly, the buffer air duct 2 is provided with a splitter plate 22 which is in an inverted cone shape and symmetrically arranged between the two air ducts, so that high-speed air flows are split by the splitter plate 22, and air is uniformly split into the two air ducts, thereby being beneficial to improving the consistency of the air outlet effect of the two air ducts, and simultaneously reducing noise generated by the air in the air ducts, and further reducing working noise of the bladeless fan.
In addition, the buffer air duct 2 is not required to be arranged, the rear air duct 3 and the front air duct 4 are directly arranged on the volute 1, and a certain noise reduction effect can be achieved.
The invention also discloses a bladeless fan comprising the air supply assembly. The air supply assembly can be applied to other devices for driving fluid to flow besides the bladeless air duct.
The noise effect of the present application, as shown in FIG. 4, can be seen that the conventional bladeless fan has a significant peak around 1000Hz with a maximum noise level of 26.11dB at a rotational speed of 1500 rpm. As shown in FIG. 5, the peak value of the bladeless fan of the patent is lower than that of the traditional bladeless fan at the frequency of 1000Hz, and the maximum noise value is 21.9dB. The bladeless fan has obvious noise reduction effect.
It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. The air supply assembly comprises a volute, and is characterized in that a rear air duct is arranged on the side face of the volute along the tangential direction, the end part of the rear air duct is communicated with the volute, an air guide wall and a front air duct are respectively arranged on two sides of the end part of the rear air duct, the front air duct is positioned on one side of the end part of the rear air duct, which is far away from the volute, and an air outlet is formed;
A buffer air duct extending along the tangential direction of the spiral case is formed between the spiral case and the rear air duct, and the rear air duct is communicated with the spiral case through the buffer air duct;
The diameter D of the wind wheel and the horizontal distance L between the center of the impeller and the adjacent air outlet satisfy the condition that L is less than or equal to 1.3D and less than or equal to 1.6D;
the diameter D of the wind wheel and the height difference H between the center of the impeller and the adjacent air outlet satisfy the requirement of 1.5D & lt, H & lt, 1.8D.
2. The air supply assembly according to claim 1, wherein the buffer duct is formed with an inclined extension portion, and the front duct is communicated with the scroll case through the extension portion.
3. The air supply assembly according to claim 1, wherein two air channels are arranged on the spiral case oppositely, and the buffer air channel is provided with a splitter plate which enables air in the buffer air channel to uniformly enter the two air channels.
4. The air supply assembly of claim 1, wherein a rotatable wind wheel is disposed within the volute.
5. The air supply assembly of claim 1, wherein the front air duct forms an air outlet grille disposed along the extending direction on a side away from the rear air duct, and the air outlet is disposed on the air outlet grille.
6. The air supply assembly of claim 5, wherein the air outlet is disposed along a direction perpendicular to the air guiding wall.
7. A bladeless fan comprising an air moving assembly according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111278448.6A CN113847281B (en) | 2021-10-30 | 2021-10-30 | Air supply components and bladeless fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111278448.6A CN113847281B (en) | 2021-10-30 | 2021-10-30 | Air supply components and bladeless fans |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113847281A CN113847281A (en) | 2021-12-28 |
| CN113847281B true CN113847281B (en) | 2025-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111278448.6A Active CN113847281B (en) | 2021-10-30 | 2021-10-30 | Air supply components and bladeless fans |
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| Country | Link |
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| CN (1) | CN113847281B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216199254U (en) * | 2021-10-30 | 2022-04-05 | 珠海格力电器股份有限公司 | Air supply components and bladeless fans |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016105409B4 (en) * | 2016-03-23 | 2018-11-15 | Twe - Tandem Wind Energy Gmbh | Wind turbine and method for controlling a wind turbine |
| CN113137386B (en) * | 2020-01-19 | 2024-04-05 | 广东美的环境电器制造有限公司 | Air supply device |
| CN214366890U (en) * | 2021-01-29 | 2021-10-08 | 广东科西智能科技有限公司 | Wind guide baffle structure of bladeless wind ring |
| CN214465021U (en) * | 2021-03-05 | 2021-10-22 | 珠海格力电器股份有限公司 | Air duct shell and bladeless fan |
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- 2021-10-30 CN CN202111278448.6A patent/CN113847281B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216199254U (en) * | 2021-10-30 | 2022-04-05 | 珠海格力电器股份有限公司 | Air supply components and bladeless fans |
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| CN113847281A (en) | 2021-12-28 |
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