CN109827202B - Dynamic filter screen structure and fan and range hood with same - Google Patents
Dynamic filter screen structure and fan and range hood with same Download PDFInfo
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- CN109827202B CN109827202B CN201711181671.2A CN201711181671A CN109827202B CN 109827202 B CN109827202 B CN 109827202B CN 201711181671 A CN201711181671 A CN 201711181671A CN 109827202 B CN109827202 B CN 109827202B
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- filter screen
- impeller
- screen cylinder
- fan
- outer filter
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- 239000003517 fume Substances 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000006233 lamp black Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 abstract description 22
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 6
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 6
- 241001330002 Bambuseae Species 0.000 abstract description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 6
- 239000011425 bamboo Substances 0.000 abstract description 6
- 230000011218 segmentation Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 20
- 238000001914 filtration Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Ventilation (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a dynamic filter screen structure, includes impeller (11) and locates middle dish (12) at impeller (11) middle part, its characterized in that the protruding outer filter screen section of thick bamboo (61) that are equipped with of front end of impeller (11) can rotate along with impeller (11), middle dish (12) middle part axial forward extension is provided with kuppe (63), forms oil smoke segmentation region (14) between the preceding terminal surface of the rear end face of this kuppe (63) and middle dish (12) to, be equipped with interior filter screen section of thick bamboo (62) between aforementioned outer filter screen section of thick bamboo (61) front end and the preceding kuppe (63) front end. The application also discloses a fan and a range hood. Compared with the prior art: the interception efficiency of the oil fume is greatly improved; energy is effectively utilized and noise is reduced.
Description
Technical Field
The utility model relates to an oil smoke filtering structure of an impeller, and also relates to a fan and a range hood with the structure, belonging to the technical field of kitchen range oil smoke filtering.
Background
The current range hood is used for protecting a motor and separating oil smoke, an air inlet net cover is generally arranged at an air inlet of a fume collecting hood, and as an improvement, a plane net cover is also arranged at an air inlet of a volute and can rotate together with an impeller, and the Chinese patent of ZL201420732722.1, namely a rotary centrifugal oil smoke separation device (the authorized bulletin number is CN 204285570U); reference may also be made to the chinese utility model patent No. ZL201620110299.0, "a flat-panel range hood" (grant bulletin No. CN 205536025U);
however, the planar mesh enclosure with the structure has the following defects in the use process:
firstly, the noise is loud, the contact surface between the plane mesh enclosure and the oil smoke is not big enough, the smoke passing through the plane mesh enclosure is vertical to the surface of the mesh enclosure, and the smoke enters the range hood and collides with the rotating airflow generated by the rotation of the impeller to cause loud noise; secondly, the phenomena of incomplete oil smoke separation and the like exist, the air inlet mode of the plane mesh enclosure does not accord with air fluidics, and the oil smoke cannot be well drained; and the area, close to the blades, inside the impeller is a secondary flow and vortex which are easily generated in the middle part area of the main body area where the airflow flows before entering the blades, so that energy waste is caused, and the secondary flow and vortex are also main causes of noise.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a dynamic filter screen structure with good oil smoke separation effect aiming at the current state of the art.
Another technical problem to be solved by the present utility model is to provide a dynamic filter screen structure with low energy loss and low noise.
Another technical problem to be solved by the present utility model is to provide a fan with good oil smoke separation effect aiming at the above state of the art.
Yet another object of the present utility model is to provide a fan with low energy consumption and low noise.
Another technical problem to be solved by the present utility model is to provide a range hood with good oil smoke separation effect aiming at the above state of the art.
Another technical problem to be solved by the present utility model is to provide a range hood with low energy consumption and low noise.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a developments filter screen structure, includes impeller and locates the middle dish at impeller middle part, its characterized in that the protruding outer filter screen section of thick bamboo that is equipped with of front end of impeller can rotate along with the impeller, the middle dish middle part axial forward extension is provided with the kuppe, forms the oil smoke between the preceding terminal surface of this kuppe and middle dish and cuts apart the region to, be equipped with interior filter screen section of thick bamboo between aforesaid outer filter screen section of thick bamboo front end and the aforesaid kuppe front end.
Further, the front end of the outer filter screen cylinder is narrow, and the rear end of the outer filter screen cylinder is wide and is in a truncated cone shape.
Further, the front end of the inner filter screen cylinder is wide, and the rear end of the inner filter screen cylinder is narrow and is in a truncated cone shape. Is beneficial to the staggered movement of the oil smoke and increases the probability of the filter screen to intercept the oil smoke.
In view of the convenience in manufacturing, the outer filter screen cylinder and the inner filter screen cylinder are integrated.
Further, the front end face of the air guide sleeve is a flat face, and the outer peripheral face is formed by smoothly extending the edge of the middle plate to the front end face.
In order to reduce the air flow resistance, the outer peripheral surface of the air guide sleeve is concave and smooth.
The connection assembly structure of the inner filter screen cylinder and the air guide sleeve is preferably set as follows: the front end of the inner filter screen cylinder is bent inwards in the radial direction to form a connecting ring, a flat cover plate serving as a flat surface is arranged at the front end of the guide cover, and the connecting ring of the inner filter screen cylinder is positioned at the front end of the guide cover by the cover plate.
Preferably, the depth of the outer filter screen cylinder is 50-200 mm.
Preferably, the single-hole area of the filter mesh on the outer filter screen cylinder is 40mm 2 ～400mm 2 。
Preferably, the filter mesh on the outer filter screen cylinder is diamond, round, regular hexagon, ellipse or square.
Preferably, the penetration rate of the outer filter screen cylinder is 0.35 to 0.7.
Preferably, the total ventilation area of the outer filter screen cylinder is 15000mm 2 ～70000mm 2 。
A fan comprises a volute, a motor and an impeller, wherein the motor and the impeller are arranged in the volute, the volute is provided with an air inlet, an output shaft of the first motor is connected with a middle disc of the impeller, and the impeller is arranged opposite to the air inlet of the volute.
Further, the outer filter screen cylinder at least partially extends out of the air inlet of the volute.
A range hood comprises a housing, a fan and a fume collecting hood, wherein the fan is arranged in the housing, and the fume collecting hood is arranged at the lower port of the housing and is provided with an air inlet.
Compared with the prior art, the utility model has the advantages that: the inner filter screen cylinder and the outer filter screen cylinder rotate together, so that the filtering area of the dynamic screen is increased, and the rapid staggered movement and the rotation between the inner and outer meshes have a disturbance effect on the air flow, thereby improving the filtering performance of the range hood and greatly improving the interception efficiency of the oil smoke; in addition, the air flow can be guided by the air guide cover with lower flow resistance, and meanwhile, an oil smoke dividing area is formed between the rear end face of the air guide cover and the front end face of the middle plate, so that vortex and secondary flow phenomena in the area are reduced, and effective utilization of energy and reduction of noise are facilitated.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is a schematic view of the structure of fig. 1 with the cover removed.
Fig. 3 is a schematic structural view of fig. 2 with the front cover plate removed.
Fig. 4 is a perspective cross-sectional view of an embodiment.
Fig. 5 is an enlarged view of the combination of the impeller, outer filter cartridge, inner filter cartridge, and pod of fig. 3.
Fig. 6 is a perspective cross-sectional view of fig. 5.
Fig. 7 is an exploded view of fig. 5.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 4, the range hood in the present embodiment includes a housing 3, a fan and a fume collecting hood 4, the fan is disposed in the housing 3, and the fume collecting hood 4 is disposed at a lower port of the housing 3 and has an air inlet. The fan comprises a volute 13, a motor 1 and an impeller 11, wherein the motor 1 and the impeller 11 are arranged in the volute 13, the volute 13 is provided with an air inlet, an output shaft of the first motor 1 is connected with a middle disc 12 of the impeller 11, and the impeller 11 is arranged opposite to the air inlet of the volute 13.
The middle part of the impeller 11 is provided with a middle disc 12, the front end of the impeller 11 is convexly provided with an outer filter screen cylinder 61 which can rotate along with the impeller 11, the middle part of the middle disc 12 is axially and forwards extended and provided with a guide cover 63, a lampblack dividing area 14 is formed between the rear end surface of the guide cover 63 and the front end surface of the middle disc 12, and an inner filter screen cylinder 62 is arranged between the front end of the outer filter screen cylinder 61 and the front end of the guide cover 63. The outer filter screen cylinder 61 extends out of the air inlet of the volute 13. Wherein fig. 4 is a schematic view of the structure with the front cover plate 5 removed.
As shown in fig. 5 to 7, the outer filter tube 61 has a wide front end and a narrow rear end, and is in the shape of a truncated cone, and the inner filter tube 62 has a wide front end and a narrow rear end and is in the shape of a truncated cone. The outer filter cartridge 61 is integral with the inner filter cartridge 62. The front end face of the air guide sleeve 63 is a flat surface, and the outer peripheral surface is formed by smoothly extending the edge of the middle disc 12 to the front end face. The outer peripheral surface of the pod 63 has a concave smooth curved surface.
The assembly structure of the inner filter screen cylinder 62 and the pod is as follows: the front end of the inner filter screen cylinder 62 is bent radially inwards to form a connecting ring 65, a flat cover plate 64 serving as a flat surface is arranged at the front end of the guide cover 63, and the cover plate 64 positions the connecting ring 65 of the inner filter screen cylinder 62 at the front end of the guide cover 63 through screws.
The depth of the outer filter cartridge 61 in this embodiment is 50 to 200mm. The single-hole area of the filter mesh on the outer filter screen drum 61 was 40mm 2 ～400mm 2 . The filter mesh on the outer filter screen cylinder 61 is diamond, circular, regular hexagonal, elliptical or square. The penetration rate of the outer screen drum 61 is 0.35 to 0.7. The total ventilation area of the outer filter screen cylinder 61 was 15000mm 2 ～70000mm 2 . The filter mesh and the perforation ratio of the inner filter cartridge 62 may be referred to as the outer filter cartridge 61.
When the range hood works, the outer filter screen cylinder 61 and the inner filter screen cylinder 62 rotate along with the impeller, most of oil smoke near the impeller side is filtered through the outer hole screen surface, and the oil smoke with high speed possibly enters the impeller after passing through the inner filter screen cylinder 62 for multiple times; the fume at the front end of the outer filter screen barrel 61 mainly passes through the inner mesh surface for filtering.
After entering the impeller, the oil smoke flows to the blade area under the guide of the curved surface of the guide cover 63, but does not stay in the oil smoke dividing area 14, so that the local resistance loss caused by the bad flow such as secondary flow, vortex flow and the like in the area is reduced. The outer side surface of the air guide sleeve 63 also plays a role in guiding oil, and part of the oil is collected and dripped into the volute.
Claims (9)
1. The dynamic filter screen structure comprises an impeller (11) and a middle disc (12) arranged in the middle of the impeller (11), and is characterized in that an outer filter screen cylinder (61) capable of rotating together with the impeller (11) is convexly arranged at the front end of the impeller (11), a guide cover (63) is axially and forwards arranged in the middle of the middle disc (12), a lampblack dividing area (14) is formed between the rear end surface of the guide cover (63) and the front end surface of the middle disc (12), and an inner filter screen cylinder (62) is arranged between the front end of the outer filter screen cylinder (61) and the front end of the guide cover (63);
the front end of the outer filter screen cylinder (61) is narrow, and the rear end is wide and is in a round table shape;
the front end of the inner filter screen cylinder (62) is wide, and the rear end is narrow and is in a round table shape;
the outer filter screen cylinder (61) and the inner filter screen cylinder (62) are integrated;
the front end face of the air guide sleeve (63) is a flat face, and the outer peripheral face is formed by smoothly extending the edge of the middle disc (12) to the front end face;
a smooth curved surface of which the outer peripheral surface is concave is arranged on the guide cover (63);
the front end of the inner filter screen cylinder (62) is bent inwards in the radial direction to form a connecting ring (65), a flat cover plate (64) serving as a flat surface is arranged at the front end of the guide cover (63), and the cover plate (64) positions the connecting ring (65) of the inner filter screen cylinder (62) at the front end of the guide cover (63).
2. A dynamic filter structure according to claim 1, characterized in that the depth of the outer filter cartridge (61) is 50-200 mm.
3. A dynamic filter structure according to claim 2, characterized in that the filter mesh single hole area on the outer filter screen drum (61) is 40mm 2 ～400mm 2 。
4. A dynamic filter structure according to claim 2, characterized in that the filter mesh on the outer filter cartridge (61) is diamond, circular, regular hexagonal, oval or square.
5. A dynamic filter structure according to claim 2, characterized in that the perforation rate of the outer filter cartridge (61) is 0.35-0.7.
6. A dynamic filter structure according to claim 2, characterized in that the total ventilation area of the outer filter cartridge (61) is 15000mm 2 ～70000mm 2 。
7. A fan with a dynamic filter screen structure according to any one of claims 1-6, comprising a volute (13), a motor (1) and an impeller (11) arranged in the volute (13), wherein the volute (13) is provided with an air inlet, an output shaft of the first motor (1) is connected with a middle disc (12) of the impeller (11), and the impeller (11) is arranged opposite to the air inlet of the volute (13).
8. The fan according to claim 7, characterized in that the outer filter cartridge (61) has an air inlet extending at least partially out of the volute (13).
9. A range hood with the fan as claimed in claim 7 or 8, comprising a housing (3), a fan and a fume collecting hood (4), wherein the fan is arranged in the housing (3), and the fume collecting hood (4) is arranged at the lower port of the housing (3) and is provided with an air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181671.2A CN109827202B (en) | 2017-11-23 | 2017-11-23 | Dynamic filter screen structure and fan and range hood with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181671.2A CN109827202B (en) | 2017-11-23 | 2017-11-23 | Dynamic filter screen structure and fan and range hood with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109827202A CN109827202A (en) | 2019-05-31 |
| CN109827202B true CN109827202B (en) | 2024-01-16 |
Family
ID=66859394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711181671.2A Active CN109827202B (en) | 2017-11-23 | 2017-11-23 | Dynamic filter screen structure and fan and range hood with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109827202B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203670271U (en) * | 2013-11-30 | 2014-06-25 | 宁波方太厨具有限公司 | Impeller of centrifugal fan |
| CN106066055A (en) * | 2016-07-22 | 2016-11-02 | 宁波方太厨具有限公司 | A kind of range hood |
| CN106439957A (en) * | 2016-08-28 | 2017-02-22 | 杭州老板电器股份有限公司 | Side smoking machine with double air inlet air flues |
| CN106640763A (en) * | 2016-10-20 | 2017-05-10 | 宁波方太厨具有限公司 | Air inlet ring and centrifugal fan comprising same |
| CN107355837A (en) * | 2017-08-15 | 2017-11-17 | 芜湖美的厨房电器制造有限公司 | Range hood, impeller assembly and blower fan apparatus for range hood |
-
2017
- 2017-11-23 CN CN201711181671.2A patent/CN109827202B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203670271U (en) * | 2013-11-30 | 2014-06-25 | 宁波方太厨具有限公司 | Impeller of centrifugal fan |
| CN106066055A (en) * | 2016-07-22 | 2016-11-02 | 宁波方太厨具有限公司 | A kind of range hood |
| CN106439957A (en) * | 2016-08-28 | 2017-02-22 | 杭州老板电器股份有限公司 | Side smoking machine with double air inlet air flues |
| CN106640763A (en) * | 2016-10-20 | 2017-05-10 | 宁波方太厨具有限公司 | Air inlet ring and centrifugal fan comprising same |
| CN107355837A (en) * | 2017-08-15 | 2017-11-17 | 芜湖美的厨房电器制造有限公司 | Range hood, impeller assembly and blower fan apparatus for range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109827202A (en) | 2019-05-31 |
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