CN209976883U - Impeller, fan and range hood - Google Patents
Impeller, fan and range hood Download PDFInfo
- Publication number
- CN209976883U CN209976883U CN201920248991.3U CN201920248991U CN209976883U CN 209976883 U CN209976883 U CN 209976883U CN 201920248991 U CN201920248991 U CN 201920248991U CN 209976883 U CN209976883 U CN 209976883U
- Authority
- CN
- China
- Prior art keywords
- wheel disc
- fan blade
- fan
- impeller
- air outlet
- 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.)
- Withdrawn - After Issue
Links
- 238000000926 separation method Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 206010013954 Dysphoria Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010033557 Palpitations Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Abstract
The utility model discloses an impeller, fan and range hood, wherein the impeller includes rim plate and a plurality of fan blade, and is a plurality of the fan blade is followed the circumference interval of rim plate sets up set up the inner chamber in the rim plate and seted up on the rim plate with the inlet port of inner chamber intercommunication set up in the fan blade and set up the cavity and be in the surface of fan blade seted up with the venthole of cavity intercommunication, the inner chamber of rim plate with the cavity of fan blade is linked together, and produced noise is little when it is rotatory.
Description
Technical Field
The utility model relates to a kitchen electricity technical field especially relates to an impeller, fan and range hood.
Background
In the related art, the range hood has become one of indispensable kitchen household appliances in modern families, wherein air volume, wind pressure and noise are the core indexes of the range hood. When asking about which problems the consumers will encounter when using the household range hood, 85% of consumers will mention that the range hood has small suction force and unsatisfactory range hood effect, and the consumers generally think that the suction force is large and the range hood effect is good as the greatest requirements for purchasing the range hood. In recent years, the whole industry collectively enters the era of large suction force, the large suction force range hood also becomes the first choice for consumers to purchase range hoods, the market share of the large suction force range hood is increased far faster than that of other types of range hoods, and the large suction force range hood is really generally accepted by the wide consumers.
In recent years, the domestic cigarette machine market mainly pushes the concepts of large air volume and large suction all the time, and along with the gradual improvement of the air volume, the noise generated by the range hood is also increasingly large. When the range hood is opened during cooking, the voice, the telephone sound, the doorbell sound and the child sound can not be heard, even the strong noise can cause the adverse reactions of dysphoria, headache, palpitation and the like of housewives and kitchen operators, and the long-term use can cause serious influence on the physical and mental health. Therefore, the noise becomes the technical problem to be solved urgently in the existing range hood. Along with the improvement of the requirements of people on the living quality, users pay more and more attention to the noise parameters of the range hood when purchasing the range hood. The quality of the noise performance of the cigarette machine can be said to be a big key factor of the product competitiveness. The noise that range hood produced mainly concentrates on the fan, and the noise that its produced is very big when the impeller of fan is rotatory, seriously influences housewife and kitchen operating personnel's use experience.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the problems that exist among the prior art to a certain extent at least, for this reason, an object of the utility model is to provide an impeller, produced noise is little when it is rotatory.
The above purpose is realized by the following technical scheme:
the impeller comprises a wheel disc and a plurality of fan blades, wherein the fan blades are arranged along the circumferential direction of the wheel disc at intervals, an inner cavity is formed in the wheel disc, an air inlet communicated with the inner cavity is formed in the wheel disc, a cavity is formed in the fan blades, air outlet holes communicated with the cavity are formed in the surfaces of the fan blades, and the inner cavity of the wheel disc is communicated with the cavity of the fan blades.
In some embodiments, the fan blade is an airfoil fan blade.
In some embodiments, the fan blade has a windward side and a leeward side, air outlets are formed on both the windward side and the leeward side, and the number of the air outlets on the windward side is less than that of the air outlets on the leeward side.
In some embodiments, an airflow inflow position and an airflow outflow position are respectively formed on two sides of the fan blade, and on the leeward side of the fan blade, the number of the air outlet holes at the airflow inflow position is greater than that at the airflow outflow position.
In some embodiments, the number of the air outlet holes at the air flow inflow position is equivalent to that of the air outlet holes at the air flow outflow position on the windward side of the fan blade.
In some embodiments, the device further comprises a pressure boosting device, an air outlet end of the pressure boosting device is communicated with an air inlet hole of the wheel disc, and high-pressure air output by the pressure boosting device can be adjusted.
In some embodiments, the wind turbine further comprises a first end ring and a second end ring, wherein the first end ring, the wheel disc and the second end ring are arranged at intervals, the wind blades are arranged between the first end ring and the wheel disc at intervals in the circumferential direction, and each wind blade is respectively connected with the first end ring and the wheel disc;
the fan blades are arranged between the wheel disc and the second end ring at intervals in the circumferential direction, and each fan blade is connected with the wheel disc and the second end ring respectively.
Another object of the present invention is to provide a fan, which can improve the noise level of the range hood.
The above purpose is realized by the following technical scheme:
a fan having an impeller as described above.
Another object of the utility model is to provide a range hood, its noise is little, can promote user's use and experience.
A range hood has the fan as above.
Compared with the prior art, the utility model, following effect has at least:
1. the utility model discloses an impeller adopts the fluid separation active control method through designing neotype fan blade structure, can realize reducing fan blade boundary layer fluid separation phenomenon, can show the noise level that improves range hood, simultaneously because the fan blade can spray some air, also can bring the improvement of wind pressure, brings the promotion that user experience felt.
Other advantageous results of the invention will be described in the detailed description with reference to the drawings.
Drawings
Fig. 1 is a schematic perspective view of an impeller according to an embodiment of the present invention;
fig. 2 is a structural sectional view of an impeller in an embodiment of the present invention;
fig. 3 is a schematic front view of a fan blade in an embodiment of the present invention;
fig. 4 is a schematic back view of a fan blade in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows: as shown in fig. 1, fig. 2, fig. 3 and fig. 4, this embodiment provides an impeller, including wheel disc 1 and a plurality of fan blades 2, a plurality of fan blades 2 are along the circumference interval setting of wheel disc 1, set up inner chamber 100 and set up the inlet port 101 with inner chamber 100 intercommunication on wheel disc 1 in the wheel disc 1, set up cavity 200 and set up the venthole 201 with cavity 200 intercommunication on the surface of fan blade 2 in fan blade 2, inner chamber 100 of wheel disc 1 is linked together with cavity 200 of fan blade 2, in this embodiment, wheel disc 1 and a plurality of fan blades 2 all adopt hollow structure, wheel disc 1 makes hollow structure, the inside can circulate high-pressure air, and fan blade 2 realizes the UNICOM with wheel disc 1. In addition, the wheel disc 1 is communicated with high-pressure air to realize that the high-pressure air is sprayed out through the air outlet holes 201 on the surfaces of the fan blades 2, so that the effect of reducing flow separation is realized. The high-pressure air entering the inner cavity 100 through the air inlet 101 is ejected from the air outlet holes 201 after passing through the cavity 200, and the high-pressure air is ejected from the air outlet holes 201 distributed on the surface of the fan blade 2 after entering the fan blade 2, so that necessary air compensation can be provided for the flow separation area to reduce boundary layer separation, thereby reducing noise and improving wind pressure.
The impeller of this embodiment adopts the fluid separation initiative control method through designing neotype fan blade structure, can realize reducing fan blade boundary layer fluid separation phenomenon, can show the noise level that improves range hood, simultaneously because the fan blade can spray some air, also can bring the improvement of wind pressure, brings the promotion of user experience sense.
Specifically, the separation Control can be divided into Passive Flow Control (PFC) and Active Flow Control (AFC).
The separation active control (Phase-compensation control) can more flexibly, accurately and effectively change the flow state by injecting controllable energy into the flow field, thereby achieving better control effect, being a new research field generated by the intersection of control science and hydromechanics, and having high research value in both academic and engineering application;
in the background art, when an impeller of a range hood rotates, a strong pressure gradient is formed on the windward side and the leeward side of the impeller of the range hood, so that a serious boundary layer fluid separation phenomenon is caused, the phenomenon is verified by experiments and simulation, and according to a wheel disc pressure cross section schematic diagram of the simulation, a lot of flow separation exists on the windward side and the leeward side of a fan blade. The utility model discloses borrow for reference wherein active control's thinking, carry out the innovative design to current range hood's impeller, reduce the boundary layer flow separation phenomenon of fan blade.
Preferably, the fan blade 2 is an airfoil fan blade, and the blade profile of the fan blade 2 is improved to be changed into the airfoil fan blade from a sheet-shaped thin plate structure, so that the phenomenon of advanced separation of a boundary layer can be weakened.
Further, the fan blade 2 has a windward side 21 and a leeward side 22, air outlet holes 201 are formed in the windward side 21 and the leeward side 22, and the number of the air outlet holes 201 in the windward side 21 is less than that of the air outlet holes 201 in the leeward side 22. As can be known from simulation results, on the leeward side 22 of the fan blade 2, the flow separation is strong, and the windward side 21 of the fan blade 2 has weak flow separation, so that the number of the air outlet holes 201 of the leeward side 22 of the fan blade 2 is relatively large, and the number of the air outlet holes 201 of the windward side 21 is relatively small, so as to provide different additional air supplement flows and better alleviate the boundary layer separation.
Furthermore, an airflow inflow position and an airflow outflow position are respectively formed on two sides of the fan blade 2, the number of the air outlet holes 201 at the airflow inflow position is more than that of the air outlet holes 201 at the airflow outflow position on the leeward side 22 of the fan blade 2, and the number of the air outlet holes 201 at the airflow inflow position is equal to that of the air outlet holes 201 at the airflow outflow position on the windward side 21 of the fan blade 2. As can be known from simulation results, the degrees of boundary layer separation at the airflow inflow position and the airflow outflow position of the fan blade 2 are different, and the degrees of separation between the windward surface 21 and the leeward surface 22 are also different, specifically, the boundary layer separation at the airflow inflow position of the leeward surface 22 of the fan blade 2 is more severe than the boundary layer separation at the airflow outflow position, so that the number of the air outlets 201 at the airflow inflow position of the leeward surface 22 of the fan blade 2 is greater than the number of the air outlets 201 at the airflow outflow position. The boundary layer separation is basically consistent from the air flow inflow position to the air flow outflow position on the windward side 21 of the fan blade 2, so that the windward side 21 of the fan blade 2 can be provided with uniform air outlet holes 201.
Preferably, the device further comprises a pressurizing device 3, an air outlet end of the pressurizing device 3 is communicated with an air inlet hole 101 of the wheel disc 1, and high-pressure air output by the pressurizing device 3 can be adjusted. Because different optimal jet speeds are needed under different impeller rotating speeds to achieve a better control effect, the jet flow requirements of different rotating speeds can be met by adjusting the high-pressure air pressure of the supercharging device 3.
In this embodiment, the wind turbine further includes a first end ring 41 and a second end ring 42, the first end ring 41, the wheel disc 1 and the second end ring 42 are arranged at intervals, the wind blades 2 are circumferentially arranged between the first end ring 41 and the wheel disc 1 at intervals, and each wind blade 2 is respectively connected with the first end ring 41 and the wheel disc 1; the fan blades 2 are arranged between the wheel disc 1 and the second end ring 42 at intervals in the circumferential direction, each fan blade 2 is connected with the wheel disc 1 and the second end ring 42 respectively, the design is simple and ingenious, the wind pressure can be improved while the noise is reduced, and the use experience is improved for consumers.
Example two: the present embodiment provides a fan having an impeller as described in the first embodiment, and the fan of the present embodiment can improve the noise level of the range hood by using the impeller as described in the first embodiment.
Example three: the present embodiment provides a range hood, which has the fan as described in the second embodiment, and the noise is low, so that the user experience can be improved.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (9)
1. The impeller comprises a wheel disc (1) and a plurality of fan blades (2), wherein the fan blades (2) are arranged along the circumferential direction of the wheel disc (1) at intervals, and is characterized in that an inner cavity (100) is formed in the wheel disc (1) and air inlet holes (101) communicated with the inner cavity (100) are formed in the wheel disc (1), cavities (200) are formed in the fan blades (2) and air outlet holes (201) communicated with the cavities (200) are formed in the surfaces of the fan blades (2), and the inner cavity (100) of the wheel disc (1) is communicated with the cavities (200) of the fan blades (2).
2. An impeller according to claim 1, characterized in that the blades (2) are airfoil blades.
3. The impeller of claim 1, wherein the fan blade (2) is provided with a windward surface (21) and a leeward surface (22), air outlet holes (201) are formed in the windward surface (21) and the leeward surface (22), and the number of the air outlet holes (201) in the windward surface (21) is less than that of the air outlet holes (201) in the leeward surface (22).
4. An impeller according to claim 3, characterized in that an airflow inflow position and an airflow outflow position are respectively formed on both sides of the fan blade (2), and the number of the air outlet holes (201) at the airflow inflow position is more than that of the air outlet holes (201) at the airflow outflow position on the lee side (22) of the fan blade (2).
5. An impeller according to claim 4, characterized in that the number of the air outlet holes (201) at the air inflow position is equivalent to the number of the air outlet holes (201) at the air outflow position on the windward side (21) of the fan blade (2).
6. An impeller according to any one of claims 1 to 5, characterized in that the impeller further comprises a pressure boosting device (3), an air outlet end of the pressure boosting device (3) is communicated with an air inlet hole (101) of the wheel disc (1), and high-pressure air output by the pressure boosting device (3) can be adjusted.
7. An impeller according to any one of claims 1 to 5, further comprising a first end ring (41) and a second end ring (42), wherein the first end ring (41), the wheel disc (1) and the second end ring (42) are arranged at intervals, the fan blades (2) are arranged at intervals in the circumferential direction between the first end ring (41) and the wheel disc (1), and each fan blade (2) is respectively connected with the first end ring (41) and the wheel disc (1);
the fan blades (2) are arranged between the wheel disc (1) and the second end ring (42) at intervals in the circumferential direction, and each fan blade (2) is connected with the wheel disc (1) and the second end ring (42) respectively.
8. A fan having an impeller as claimed in any one of claims 1 to 7.
9. A range hood having a fan according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920248991.3U CN209976883U (en) | 2019-02-27 | 2019-02-27 | Impeller, fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920248991.3U CN209976883U (en) | 2019-02-27 | 2019-02-27 | Impeller, fan and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209976883U true CN209976883U (en) | 2020-01-21 |
Family
ID=69253484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920248991.3U Withdrawn - After Issue CN209976883U (en) | 2019-02-27 | 2019-02-27 | Impeller, fan and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209976883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763996A (en) * | 2019-02-27 | 2019-05-17 | 华帝股份有限公司 | Impeller, fan and range hood |
-
2019
- 2019-02-27 CN CN201920248991.3U patent/CN209976883U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763996A (en) * | 2019-02-27 | 2019-05-17 | 华帝股份有限公司 | Impeller, fan and range hood |
| CN109763996B (en) * | 2019-02-27 | 2024-03-26 | 华帝股份有限公司 | Impeller, fan and range hood |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209976883U (en) | Impeller, fan and range hood | |
| CN109763996B (en) | Impeller, fan and range hood | |
| CN104047895A (en) | Low-noise range hood double-suction fan volute with lower edge adopting circular arc transition | |
| CN201786776U (en) | Novel jet fan | |
| CN109882447A (en) | Fan and range hood with same | |
| CN211176964U (en) | Net cover, fan and range hood | |
| CN108361205B (en) | Centrifugal pump impeller and LNG immersed pump comprising same | |
| CN202326408U (en) | Efficient centrifugal ventilator blade structure | |
| CN104653492A (en) | Bladeless fan with humidification function | |
| CN210196125U (en) | Fan and range hood with same | |
| CN209976884U (en) | Impeller, fan and range hood with supercharging device | |
| CN104806571A (en) | Efficient centrifugal air blower based on computational fluid dynamic simulation | |
| CN103244456A (en) | Centrifugal pump impeller | |
| CN205064369U (en) | Domestic breathing machine, fan and impeller thereof | |
| CN203867966U (en) | Backward type centrifugal fan blade, centrifugal fan and skylight type air conditioning unit | |
| CN203744344U (en) | Range hood capable of absorbing smoke in eight directions | |
| CN206845536U (en) | A kind of centrifugal blower fan blade wheel for range hood | |
| CN208348150U (en) | A kind of small-sized multi-wing centrifugal exhaust fan of highly effective low noise and impeller | |
| CN109779969B (en) | Impeller with supercharging device, fan and range hood | |
| CN103541773A (en) | Filiform turbine | |
| CN214788109U (en) | Bladeless fan | |
| CN203362608U (en) | Bladeless fan turbine gear with splitter vanes | |
| CN208749451U (en) | A kind of diffuser, compressor and combustion gas turbine | |
| CN207634402U (en) | A kind of wind turbine noise reduction spiral tougue | |
| CN204783814U (en) | High -efficient tubing pump of low specific speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200121 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200121 Effective date of abandoning: 20240326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |