CN107956744B - Flow guide structure, mixed flow fan and range hood - Google Patents
Flow guide structure, mixed flow fan and range hood Download PDFInfo
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- CN107956744B CN107956744B CN201710941230.1A CN201710941230A CN107956744B CN 107956744 B CN107956744 B CN 107956744B CN 201710941230 A CN201710941230 A CN 201710941230A CN 107956744 B CN107956744 B CN 107956744B
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- flow guide
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- guide part
- guide sleeve
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- 238000001914 filtration Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 30
- 230000000694 effects Effects 0.000 abstract description 24
- 239000000779 smoke Substances 0.000 description 23
- 239000003517 fume Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- F04D29/403—Casings; Connections of working fluid 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
- F04D23/00—Other rotary non-positive-displacement pumps
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
Abstract
The invention provides a flow guide structure, a mixed flow fan and a range hood, wherein the flow guide structure is arranged on the air inlet side of the fan and comprises a flow guide sleeve and a flow guide piece arranged on the flow guide sleeve, at least part of the flow guide piece is positioned in the flow guide sleeve, an internal airflow channel is formed between the flow guide sleeve and the flow guide piece and communicated with an air inlet of the fan, an air inlet of the flow guide structure is arranged on the flow guide piece, and the flow guide piece and the flow guide sleeve are connected in the circumferential direction of the flow guide sleeve. The inside structure that can form the venturi effect that has of water conservancy diversion structure in this application, when the air current flows into the water conservancy diversion structure in this application, the air current receives the influence of venturi effect and accelerates to flow.
Description
Technical Field
The invention relates to the field of kitchen appliances, in particular to a flow guide structure, a mixed flow fan and a range hood.
Background
Most of the existing range hoods adopt centrifugal fans, the power consumption of the centrifugal fans is high, but the generated wind pressure is low, if the range hood with the centrifugal fans is applied to high-rise buildings, and when the use time period of the range hood is concentrated, the resistance in a public flue is too large, so that the exhaust air volume of the range hood is sharply reduced, the adsorption effect on the oil smoke in a kitchen is weakened, and the oil smoke cannot be effectively discharged.
In addition, the inside water conservancy diversion structure shape of range hood is most relatively more regular, and when using range hood, the air velocity of mixing with the oil smoke is slower, can't suck away the oil smoke in the kitchen fast, and the user is in the environment full of the oil smoke for a long time, and the health receives irreversible harm, and user experience is not good.
Disclosure of Invention
In view of the above, an objective of the present invention is to provide a flow guiding structure capable of accelerating the flow velocity of air, a mixed flow fan having the flow guiding structure, and a range hood having the flow guiding structure and capable of rapidly removing oil smoke.
In order to achieve the above purpose, in one aspect, the invention adopts the following technical scheme:
a flow guide structure is arranged on the air inlet side of a fan and comprises a flow guide sleeve and a flow guide part arranged on the flow guide sleeve, at least part of the flow guide part is positioned in the flow guide sleeve, an internal airflow channel is formed between the flow guide sleeve and the flow guide part and is communicated with an air inlet of the fan, an air inlet of the flow guide structure is arranged on the flow guide part, and the flow guide part and the flow guide sleeve are connected in the circumferential direction of the flow guide sleeve;
the water conservancy diversion spare includes water conservancy diversion portion, water conservancy diversion portion is including being located inside first water conservancy diversion portion of water conservancy diversion cover and being located the outside second water conservancy diversion portion of water conservancy diversion cover, first water conservancy diversion portion is connected with the second water conservancy diversion portion, the second water conservancy diversion portion is located the water conservancy diversion cover is kept away from one side of fan, the outer wall of first water conservancy diversion portion with between the inner wall of water conservancy diversion cover the radial direction's of water conservancy diversion cover distance grow in the direction that the air current flows.
Preferably, the water conservancy diversion spare includes the mounting disc and sets up water conservancy diversion portion on the mounting disc, the air inlet setting of water conservancy diversion structure is in on the mounting disc, the mounting disc with the water conservancy diversion cover forms the connection in the circumference of water conservancy diversion cover, at least partial structure of water conservancy diversion portion is located inside the water conservancy diversion cover the inner wall of water conservancy diversion cover with form between the outer wall of water conservancy diversion portion at least partly of airflow channel.
Preferably, in the axial direction of the flow guide sleeve, a certain distance is formed between the end part of the flow guide part on the air outlet side of the flow guide structure and the end part of the flow guide sleeve on the air outlet side.
Preferably, the first flow guide part and/or the second flow guide part are in a shell-shaped structure, and the joint of the first flow guide part and the second flow guide part is in smooth transition.
Preferably, the outer surface of the first flow guide part and/or the second flow guide part is a smooth curved surface.
Preferably, the curved surface is a spherical surface or an ellipsoidal surface.
Preferably, a filter part is arranged on the mounting plate and used for filtering the gas passing through the gas inlet of the flow guide structure.
In order to achieve the purpose, on the other hand, the invention adopts the following technical scheme:
the air inlet side of the mixed flow fan is provided with the flow guide structure.
In order to achieve the above object, in another aspect, the present invention adopts the following technical solutions:
a range hood is provided with the mixed flow fan.
The special position relation between water conservancy diversion cover and the water conservancy diversion spare in this application has constituted the structure that forms the venturi effect, and when the air current flowed into the water conservancy diversion structure in this application, the air current received the influence of venturi effect and accelerated the flow.
The mixed flow fan with the flow guide structure can rapidly suck air at the air inlet of the fan to the air outlet, and is high in air exhaust speed and good in air exhaust effect.
The range hood with the mixed flow fan has good oil fume exhaust effect, can remove oil fume in a kitchen in a short time, and creates a good cooking environment for users.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a flow directing structure provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a baffle member provided in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a fan having a nacelle according to an embodiment of the present invention;
fig. 4 is a schematic view of the internal structure of the range hood provided in the embodiment of the present invention;
fig. 5 is a schematic flow direction diagram of an air flow inside the range hood according to the embodiment of the present invention.
Drawings
1. A motor; 2. a motor bracket; 3. an end cap; 4. a flow guide sleeve; 41. an end portion; 5. a flow guide member; 51. a flow guide part; 511. a first flow guide part; 512. a second flow guide part; 513. an end portion; 52. mounting a disc; 6. an air inlet; 61. a filtering part; 7. an oil screen; 8. an oil cup; 9. a smoke collecting hood; 10. a housing; 11. an impeller shell; 12. an impeller; 13. a guide vane; 14. a wind cabinet; 15. a check valve; 16. an air inlet part; 18. a motor shaft; 19. an oil collecting cover; 20. a mounting frame; 21. an air flow channel; i, a flow guide structure; II, a mixed flow fan; III, a range hood.
Detailed Description
The present invention is described below based on embodiments, and it will be understood by those of ordinary skill in the art that the drawings provided herein are for illustrative purposes and 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, what is meant is "including, but not limited to".
The upper and lower directions described in the present specification are based on the orientation shown in fig. 5, and the upper and lower directions shown in fig. 5 are the upper and lower directions in the present application, respectively, and the cross section in the present application means a cross section perpendicular to the upper and lower directions in fig. 5.
As shown in fig. 1, fig. 2, and fig. 5, the flow guide structure i provided by the present application includes a cylindrical flow guide sleeve 4 and a flow guide member 5, an air flow channel 21 is formed between the flow guide sleeve 4 and the flow guide member 5, and the air flow channel 21 is communicated with an air inlet of the mixed flow fan ii. The flow guide element 5 is connected to the flow guide sleeve 4 in the circumferential direction of the flow guide sleeve 4 by fastening elements, such as screws, bolts, etc. The partial structure of the flow guide part 5 is positioned in the flow guide sleeve 4, an internal airflow channel 21 is formed between the inner wall of the flow guide sleeve 4 and the partial outer wall of the flow guide part 5 so as to form a condition for realizing the Venturi effect, and when airflow flows into the flow guide structure I, the airflow is accelerated under the influence of the Venturi effect. Preferably, the flow guide sleeve 4 is of a waisted cylindrical structure, the inner wall of the flow guide sleeve 4 is a smooth curved surface, and when the air flows through, a wall attachment effect is generated between the inner wall of the flow guide sleeve 4 and the air flow, so that the air flow is more uniform and stable, and the noise generated in the air flow flowing process can be reduced. Further preferably, the flow guide sleeve 4 and the flow guide member 5 are coaxially arranged, so that the flow velocity of the air flowing into the flow guide sleeve 4 is more uniform, and the noise is further reduced.
Further, the flow guiding element 5 comprises a mounting disc 52 and a flow guiding part 51, the periphery of the mounting disc 52 is connected with the flow guiding sleeve 4 in the circumferential direction, it is understood that the connection in the circumferential direction here means that the whole edge of the mounting disc 52 in the circumferential direction is connected with the flow guiding sleeve in the whole circumferential direction, the air inlet 6 of the internal air flow channel 21 of the flow guiding structure i is arranged on the mounting disc 52, and preferably, the air inlet 6 is a through hole formed on the mounting disc 52. The flow guide portion 51 is provided in the middle of the mounting plate 52 in the radial direction. In a preferred embodiment, the guiding portion 51 includes a first guiding portion 511, the first guiding portion 511 is disposed on the upper side of the mounting plate 52 and is located inside the guiding sleeve 4, and preferably, an end 513 of the first guiding portion 511 on the air outlet side of the guiding structure is spaced from an end 41 of the guiding sleeve 4 in the axial direction of the guiding sleeve 4 (refer to fig. 1), so that after assembly, a distance is provided between the end 513 of the first guiding portion 511 and the air inlet 16 of the mixed flow fan ii, so that the air flow in the inner air flow channel 21 can smoothly enter the mixed flow fan ii. Preferably, inside the flow guide sleeve 4, the cross-sectional area of the internal airflow channel 21 increases from small to large along the direction from bottom to top, i.e. a structure capable of generating a venturi effect is formed. Of course, it can be understood that the formation of the structure capable of generating the venturi effect is not only one of the above manners, but also other manners may be adopted, for example, the first diversion portion 511 is connected with the air inlet portion 16 on the air inlet side of the mixed flow fan ii, a certain distance is not left between the first diversion portion 511 and the air inlet portion, and by changing the shape of the outer surface of the first diversion portion 511, the inner airflow channel 21 with the cross-sectional area increasing from small to large is formed inside the diversion sleeve 4 along the direction from bottom to top.
In a more preferred embodiment, the flow guide part 51 includes a first flow guide part 511 located inside the guide sleeve 4 and a second flow guide part 512 located axially outside the guide sleeve 4, the first flow guide part 511 and the second flow guide part 512 are connected, the first flow guide part 511 is located on the upper side of the mounting disk 52 and located inside the guide sleeve 4, and the second flow guide part 512 is located on the lower side of the mounting disk 52 and located outside the guide sleeve 4. The first flow guide part 511 and the second flow guide part 512 are both shell-shaped structures, and the first flow guide part 511 and the second flow guide part 512 together form a closed cavity to reduce the weight of the flow guide structure i. Of course, it is understood that the first flow guide portion 511 and the second flow guide portion 512 may be a solid structure. Preferably, the outer surfaces of the first flow guiding part 511 and the second flow guiding part 512 are smooth curved surfaces, and the joint of the two parts is smoothly transited, so that the airflow is affected by the coanda effect when flowing through the surfaces, the flow is uniform, and the noise is reduced. Preferably, the curved surface is a spherical surface or an ellipsoidal surface, so that the attractiveness is enhanced. Of course, it is understood that the outer surfaces of the first flow guide portion 511 and the second flow guide portion 512 are not necessarily curved, but may be flat or have other structures to achieve the same effect. Further, along the flowing direction of the air flow, that is, from bottom to top, the distance between the first guiding portion 511 and the guiding sleeve 4 in the radial direction of the guiding sleeve 4 is not equidistant, and the distance at least includes a reducing section, in which the distance is changed from small to large, and the air flow flowing into the reducing section is influenced by the venturi effect, so as to accelerate the flow.
Further, an air inlet 6 and a filter part 61 are arranged on the mounting plate 52, the filter part 61 is used for filtering the air flow entering the flow guide sleeve 4 through the air inlet 6, and preferably, the filter part 61 comprises a grid structure, which is compatible with the effects of ventilation and filtration.
The application also provides a mixed flow fan II, is provided with on this mixed flow fan II as above the water conservancy diversion structure I, as shown in fig. 3 and combine fig. 5, mixed flow fan II includes cylindric shell 10, is provided with stator 13 in the upper end of shell 10, and the edge of the lower extreme of stator 13 and the edge fixed connection of the upper end of impeller shell 11. A trumpet-shaped impeller shell 11 is provided inside the outer shell 10, the impeller shell 11 is provided below the guide vanes 13, and an edge of an upper end of the impeller shell 11 is fixedly connected with an edge of an upper end of the outer shell 10. The motor support 2 is arranged in the guide vane 13, the motor 1 is installed on the motor support 2, the impeller 12 is arranged on the radial outer side of the motor shaft 18 of the motor 1, and the impeller 12 and the motor shaft 18 are fixedly connected together through the end cover 3 arranged at the shaft end of the motor shaft 18. The motor shaft 18 rotates to drive the impeller 12 to rotate to form negative pressure, an air inlet area is formed in the area below the impeller 12, and air in the air inlet area is sucked into the impeller 12 to form airflow. In one embodiment, the lower end of the impeller shell 11 forms an air inlet portion 16, and the air outlet of the flow guide structure i is communicated with the air inlet of the air inlet portion 16, but the air outlet and the air inlet portion may not be connected. Preferably, the air outlet of the flow guiding structure i is communicated with the air inlet of the air inlet portion 16, and the flow guiding sleeve 4 is connected with the air inlet portion 16 through a connecting member or a fastening member, such as a screw, a buckle, or the like, so as to ensure that air leakage does not occur and improve the flow speed of the air flow. Specifically, the edge of the lower end of the flow guide sleeve 4 of the flow guide structure i is fixedly connected with the edge of the lower end of the outer shell 10 in the whole circumferential direction.
As shown in fig. 5 and fig. 2, when the mixed flow fan ii works, the air flow enters from the lower side of the mixed flow fan ii and is discharged from the upper side of the mixed flow fan ii, the cross sectional area of the flow path of the air flow before entering the mixed flow fan ii is larger, after the air flow enters the flow guide sleeve 4 through the air inlet 6 of the mounting disc 52, the cross sectional area of the air flow channel 21 is suddenly reduced, the air flow continues to flow upwards, the cross sectional area of the air flow channel 21 is increased, so that a structure capable of generating a venturi effect is formed in the air flow channel 21, the air flow in the mixed flow fan ii is influenced by the venturi effect, the flow is accelerated, and the working efficiency of the mixed flow fan ii is higher.
As shown in fig. 4 and 5 in combination with fig. 2, the range hood iii in the present application includes a wind cabinet 14, the wind cabinet 14 is preferably cylindrical, a smoke collecting hood 9 is disposed at a lower end of the wind cabinet 14, a smoke collecting hood 19 communicated with the wind cabinet 14 is disposed at a lower end of the wind cabinet 14, the smoke collecting hood 19 is a shell-shaped structure with high periphery and low middle part, and the smoke collecting hood 19 is used for allowing oil smoke to pass through and filtering the oil smoke. An accommodating space is formed between the oil collecting cover 19 and the air cabinet 14, an oil screen 7 is arranged in the space inside the oil collecting cover 19, an opening is formed in the middle of the oil collecting cover 19, and an oil cup 8 is arranged below the opening. The oil screen 7 is used for filtering oil smoke in air flow, when oil dirt in the oil screen 7 is accumulated excessively, the oil dirt drops on the oil collecting cover 19 and flows towards the opening in the middle of the oil collecting cover 19, and finally drops into the oil cup 8 from the bottom of the opening, and meanwhile, as the oil collecting cover 19 is of a structure with high periphery and low middle part, after the oil cup 8 is filled, a user can clean the oil cup by himself. The mixed flow fan II is arranged above the oil net 7 in the air cabinet 14 and is fixed on the inner wall of the air cabinet 14 through a mounting frame 20. Further, range hood III still includes check valve 15, and check valve 15 sets up in mixed flow fan II's top and fixes on mounting bracket 20, and check valve 15 and mixed flow fan II set up the both sides at mounting bracket 20 respectively. The airflow from the mixed flow fan II flows into a common flue (not shown in the figure) through a check valve 15, and the oil smoke is discharged out of the home of the user.
As shown in fig. 2 to 5, the mixed flow fan ii is started to form a low pressure state inside the range hood iii, oil smoke is mixed in the air outside the range hood iii, the air flow mixed with the oil smoke enters the oil collecting hood 19 through the smoke collecting hood 9, the oil smoke is filtered through the oil screen 7 and then enters the air guide hood 4 through the mounting disc 52, and the grid structure on the mounting disc 52 can filter the oil smoke in the air flow, so that the oil-fat separation degree is improved. When entering the air guide sleeve 4, the airflow is influenced by the Venturi effect, the flow velocity is accelerated, the oil smoke suction effect is enhanced, and the oil smoke removing efficiency of the range hood III is improved. Because the outer surface of the flow guide part 51 is a smooth curved surface, the air pressure of the air flow flowing through the flow guide part can be diffused to the periphery, the flow of the air flow around the range hood III is accelerated, and the effect of sucking the oil smoke around the range hood III is improved. The flow guide part 51 can also form a wall attachment effect on the airflow flowing through the surface of the flow guide part, so that the oil fume flow flows uniformly, the rectification effect is achieved, the phenomenon of oil fume backflow is solved to a certain extent, and the working noise of the range hood III is reduced. In addition, after the range hood III works for a long time, oil stains can be accumulated on the impeller 12 of the mixed flow fan II, flow through the second flow guide part 512 after falling onto the first flow guide part 511 and then drip onto the oil screen 7, so that the oil guide and buffer effects are achieved, and the phenomenon that the oil stains are splashed everywhere due to the fact that the oil stains directly fall into the oil screen 7 from the impeller 12 is avoided.
Those skilled in the art will readily appreciate that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A flow guide structure is arranged on the air inlet side of a fan and is characterized by comprising a flow guide sleeve and a flow guide piece arranged on the flow guide sleeve, wherein at least part of the flow guide piece is positioned in the flow guide sleeve, an internal airflow channel is formed between the flow guide sleeve and the flow guide piece and is communicated with an air inlet of the fan, an air inlet of the flow guide structure is arranged on the flow guide piece, and the flow guide piece and the flow guide sleeve are connected in the circumferential direction of the flow guide sleeve;
the flow guide part comprises a flow guide part, the flow guide part comprises a first flow guide part positioned inside the flow guide sleeve and a second flow guide part positioned outside the flow guide sleeve, the first flow guide part is connected with the second flow guide part, the second flow guide part is positioned on one side of the flow guide sleeve far away from the fan, the distance between the outer wall of the first flow guide part and the inner wall of the flow guide sleeve in the radial direction of the flow guide sleeve is increased in the direction of airflow flow, and the surface of the first flow guide part is a curved surface with an upward convex middle part;
the first flow guide part and the second flow guide part are both shell-shaped structures, and the first flow guide part and the second flow guide part form a closed cavity together; or the first flow guide part and the second flow guide part form a solid structure;
the fan is a mixed flow fan and comprises a motor, a motor shaft of the motor is located on one side, close to the first flow guide portion, of the motor, the first flow guide portion is located on the lower side of the motor shaft, an impeller is arranged on the radial outer side of the motor shaft of the motor, the motor shaft rotates to drive the impeller to rotate to form negative pressure, and an air inlet area is formed in an area below the impeller.
2. The flow guide structure according to claim 1, wherein the flow guide member includes a mounting plate and a flow guide portion disposed on the mounting plate, an air inlet of the flow guide structure is disposed on the mounting plate, the mounting plate and the flow guide sleeve are connected in a circumferential direction of the flow guide sleeve, at least a part of the flow guide portion is located inside the flow guide sleeve, and at least a part of the air flow passage is formed between an inner wall of the flow guide sleeve and an outer wall of the flow guide portion.
3. The air guide structure of claim 2, wherein the air guide part has a certain distance between the end of the air outlet side of the air guide structure and the end of the air outlet side of the air guide sleeve in the axial direction of the air guide sleeve.
4. The flow guide structure of claim 1, wherein the first flow guide part and/or the second flow guide part is in a shell-shaped structure, and the junction of the first flow guide part and the second flow guide part is in smooth transition.
5. The flow directing structure according to any one of claims 1 to 4, wherein an outer surface of the first flow directing portion and/or the second flow directing portion is a smoothly curved surface.
6. The flow directing structure of claim 5, wherein the curved surface is spherical or ellipsoidal.
7. The flow directing structure of claim 2, wherein a filter portion is disposed on the mounting plate for filtering gas passing through the inlet of the flow directing structure.
8. A mixed flow fan, characterized in that, the air inlet side of the mixed flow fan is provided with the flow guide structure of any one of claims 1 to 7.
9. A range hood, characterized in that the range hood is provided with the mixed flow fan as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941230.1A CN107956744B (en) | 2017-10-11 | 2017-10-11 | Flow guide structure, mixed flow fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941230.1A CN107956744B (en) | 2017-10-11 | 2017-10-11 | Flow guide structure, mixed flow fan and range hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107956744A CN107956744A (en) | 2018-04-24 |
| CN107956744B true CN107956744B (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710941230.1A Active CN107956744B (en) | 2017-10-11 | 2017-10-11 | Flow guide structure, mixed flow fan and range hood |
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| CN (1) | CN107956744B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547778B (en) * | 2018-05-16 | 2024-07-19 | 珠海格力电器股份有限公司 | Mounting structure of fan of lampblack absorber and lampblack absorber |
| CN109611351A (en) * | 2018-12-26 | 2019-04-12 | 南京航空航天大学 | A kind of smoke exhaust ventilator of centrifugation/hybrid blower of axis stream and its composition |
| CN110630832A (en) * | 2019-08-23 | 2019-12-31 | 新昌县润达机械有限公司 | Pipe fitting connecting structure for refrigeration equipment and assembling and manufacturing method thereof |
| CN110905858B (en) * | 2019-11-07 | 2021-01-19 | 宁波方太厨具有限公司 | Fume exhaust fan |
| KR20210114300A (en) * | 2020-03-10 | 2021-09-23 | 엘지전자 주식회사 | Air circulator |
| CN113915665B (en) * | 2021-11-26 | 2024-06-11 | 杭州老板电器股份有限公司 | Injection smoke guide device and range hood |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585086Y (en) * | 2002-11-04 | 2003-11-05 | 葛德涌 | Integral domestic kitchen ventilator |
| DE102009023241A1 (en) * | 2009-05-30 | 2011-04-07 | Adek Bauteile Gmbh | Filter device for filtering fat particles in e.g. food-wall extractor bonnet, in kitchen area, has air guiding device guiding air flow in air flow unit through filter element from outer and inner sides and from filter interior to outside |
| CN202056108U (en) * | 2011-03-02 | 2011-11-30 | 嵊州市龙马冲件有限公司 | Fan device with noise reduction structure |
| CN104296219A (en) * | 2014-11-07 | 2015-01-21 | 郭军 | Range hood with rectifying function |
| CN106402974A (en) * | 2016-11-11 | 2017-02-15 | 宁波方太厨具有限公司 | Noise-reducing range hood |
-
2017
- 2017-10-11 CN CN201710941230.1A patent/CN107956744B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585086Y (en) * | 2002-11-04 | 2003-11-05 | 葛德涌 | Integral domestic kitchen ventilator |
| DE102009023241A1 (en) * | 2009-05-30 | 2011-04-07 | Adek Bauteile Gmbh | Filter device for filtering fat particles in e.g. food-wall extractor bonnet, in kitchen area, has air guiding device guiding air flow in air flow unit through filter element from outer and inner sides and from filter interior to outside |
| CN202056108U (en) * | 2011-03-02 | 2011-11-30 | 嵊州市龙马冲件有限公司 | Fan device with noise reduction structure |
| CN104296219A (en) * | 2014-11-07 | 2015-01-21 | 郭军 | Range hood with rectifying function |
| CN106402974A (en) * | 2016-11-11 | 2017-02-15 | 宁波方太厨具有限公司 | Noise-reducing range hood |
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| Publication number | Publication date |
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| CN107956744A (en) | 2018-04-24 |
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