CN218862944U - Fan system and range hood using same - Google Patents
Fan system and range hood using same Download PDFInfo
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- CN218862944U CN218862944U CN202222311210.5U CN202222311210U CN218862944U CN 218862944 U CN218862944 U CN 218862944U CN 202222311210 U CN202222311210 U CN 202222311210U CN 218862944 U CN218862944 U CN 218862944U
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Abstract
The utility model relates to a fan system and use range hood of this fan system, wherein fan system, including inside hollow bellows, be equipped with centrifugal fan in the bellows, be equipped with into wind gap and air outlet on the bellows, centrifugal fan's export with the air outlet intercommunication, its characterized in that: the air inlet of the air box is connected with a flow guiding and noise reducing frame, a flow guiding and noise reducing cavity is formed in the flow guiding and noise reducing frame, a flow guiding plate is arranged in the flow guiding and noise reducing cavity, and a flow guiding hole is formed in the flow guiding plate. Compared with the prior art, the utility model has the advantages of: through the frame of making an uproar falls in the income wind gap department connection water conservancy diversion at bellows, fall the intracavity of making an uproar in the water conservancy diversion and form the water conservancy diversion and fall the chamber of making an uproar, fall the intracavity at the water conservancy diversion and set up the guide plate, begin the water conservancy diversion hole at the guide plate, can reconcile the air current velocity of flow inequality that arouses because of the cross-section transform in the wind channel, the micropore can reduce aerodynamic noise when the air current flows through the water conservancy diversion hole on the guide plate, prevents that the air current from changing rapidly.
Description
Technical Field
The utility model relates to a fan system of range hood, especially relate to a fan system of suspension type cigarette machine and use range hood of this fan system.
Background
The range hood is a kitchen appliance for purifying the kitchen environment, and can rapidly exhaust waste gas generated by the combustion of a stove and oil smoke generated in the cooking process and discharge the waste gas and the oil smoke outdoors so as to achieve the aim of purifying the kitchen environment. The range hood has various types, wherein the European range hood is favored by consumers with the appearance of being simple, light, thin and fashionable in shape. During cooking, a large amount of oil smoke can be generated instantaneously above a cooking bench, the oil smoke is firstly gathered in a negative pressure area below a smoke collection cavity through the flow guide and gathering effect of a smoke collection cover of the range hood on the oil smoke, and then the purified oil smoke is finally discharged to an external environment under the centrifugal effect of a centrifugal fan.
In the prior art, the range hood is limited by the internal structure of the range hood when in use, so that fluid vortexes are very easy to appear in the process of flowing to the centrifugal fan, not only is the smoke discharged unsmooth, but also the smoke suction performance of the range hood is greatly reduced, and the noise generated during the operation of the centrifugal fan is increased. Especially for a ceiling type range hood with a fan system positioned above a suspended ceiling, the main noise is transmitted downwards through an air duct, the uneven air flow can cause larger pneumatic noise, and the large internal eddy can also cause flow loss; fan wheel rotation, motor vibration, aerodynamic noise can propagate down the wind channel. The single sound-absorbing cotton arranged on the inner wall of the air duct has a certain effect on noise reduction, but does not improve most of noise, downward transmitted noise and balanced airflow.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the first technical problem that will solve is to above-mentioned prior art, improves one kind and solves the in-process that flows to centrifugal fan because of the flue gas and fluid swirl appears and lead to the fan system of working noise.
The utility model discloses the second technical problem that will solve improves a solution because of the flue gas to the in-process that centrifugal fan flows the fluid swirl appear and lead to the range hood of working noise to above-mentioned prior art.
The utility model provides a technical scheme that above-mentioned first technical problem adopted does: the utility model provides a fan system, includes the inside hollow bellows, is equipped with centrifugal fan in the bellows, is equipped with into wind gap and air outlet on the bellows, centrifugal fan's export with the air outlet intercommunication, its characterized in that: the air inlet of the air box is connected with a flow guide noise reduction frame, a flow guide noise reduction cavity is formed in the flow guide noise reduction frame, a flow guide plate is arranged in the flow guide noise reduction cavity, and a flow guide hole is formed in the flow guide plate. The air flow velocity unevenness caused by section transformation in the air duct can be adjusted by the arrangement of the flow guide noise reduction cavity, and the micropores can reduce pneumatic noise when the air flow flows through the flow guide holes on the flow guide plate, so that the air flow is prevented from changing rapidly.
As the improvement, the guide plate is provided with a plurality of blocks, and the guide plate is arranged in the guide noise reduction cavity at intervals in parallel.
And the improvement is that the guide plate is a hollow plate, and the guide holes are arranged on both sides of the hollow plate.
And then, improving the structure that the flow guide holes on the two sides of the hollow plate are arranged in a staggered manner.
And the guide plate is a hollow plate with a thin middle part and two thick ends in the first direction, and the first direction is the length direction or the width direction.
And the second direction of the guide plate is vertical to the first direction.
And an oil leakage hole is formed in one side of the guide plate.
And the improvement is that sound-absorbing cotton is arranged in the flow-guiding noise-reducing cavity.
And the improvement is that the air inlet of the air box is arranged at the lower side of the air box, and the flow guide noise reduction frame is connected to the outside of the air inlet of the air box.
And improving the structure, wherein the size of the flow guiding and noise reducing frame is the same as that of the air inlet of the air box.
The improvement is that a guide plate for guiding the oil smoke from the air inlet to the inlet of the centrifugal fan is arranged in the air box, one end of the guide plate is connected to the air inlet of the air box, and the other end of the guide plate extends to the inlet of the centrifugal fan.
And the guide plate is an arc plate.
The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the utility model provides a range hood, includes collection petticoat pipe, fan system and is located the water conservancy diversion passageway between the two, the entry of water conservancy diversion passageway and the export intercommunication of collection petticoat pipe, the export and the fan system intercommunication of water conservancy diversion passageway, its characterized in that: the structure of the fan system adopts the fan structure described above, and the outlet of the flow guide channel is connected with the flow guide noise reduction frame.
Compared with the prior art, the utility model has the advantages of: connect the water conservancy diversion through the income wind gap department at bellows and fall the frame of making an uproar, fall the frame and form the water conservancy diversion and fall the chamber of making an uproar in the water conservancy diversion, fall the intracavity at the water conservancy diversion and set up the guide plate, begin the water conservancy diversion hole at the guide plate, can reconcile because of the uneven air current velocity of flow that the cross-section transform arouses in the wind channel, the micropore can reduce aerodynamic noise when the air current flows through the water conservancy diversion hole on the guide plate, prevents that the air current from changing rapidly.
Drawings
Fig. 1 is a schematic structural view of a fan system according to an embodiment of the present invention.
Fig. 2 is an exploded view of a fan system according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of a baffle according to an embodiment of the present invention.
Fig. 4 is a schematic perspective view of another view angle of the deflector according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of the range hood according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The fan system shown in fig. 1 and 2 comprises an air box with a hollow interior, wherein the air box comprises an opening box body 1a and a box cover 1b covering the opening of the opening box body 1a, a centrifugal fan 2 is arranged in the air box, an air inlet 11 and an air outlet 12 are arranged on the air box, the air inlet 11 is arranged at the lower side of the box cover 1b, the air outlet 12 is arranged at the side part of the opening box body 1a, the outlet of the centrifugal fan 1 is communicated with the air outlet 12, a flow guide noise reduction frame 3 is connected to the air inlet 11 of the air box, the flow guide noise reduction frame 3 is connected to the outside of the air inlet of the air box, the size of the flow guide noise reduction frame 3 is the same as that of the air inlet 11 of the air box, a flow guide noise reduction cavity 31 is formed in the flow guide noise reduction frame 3, a plurality of flow guide plates 4 are uniformly arranged in parallel at intervals in the flow guide noise reduction cavity 31, and flow guide holes 41 are formed in the flow guide plates 4; the upper inner wall of the diversion denoising cavity 31 is provided with sound absorbing cotton 5. Be equipped with on case lid 1b with the oil smoke from the income wind gap 11 direction 2 entrances of centrifugal fan guide board 13, guide board 13 sets up in bellows, and the income wind gap department at case lid 1b is connected to the one end of guide board 13, and the other end of guide board 13 extends to 2 entrances of centrifugal fan, and guide board 13 is the arc.
In this embodiment, the guide plate 4 is substantially a rectangular parallelepiped, and the guide plate 4 is a hollow plate, the guide holes 41 are disposed on both sides of the hollow plate, the guide holes on both sides of the hollow plate are staggered, the guide plate is thin in the middle of the length direction and thick at both ends, and is thick at one end in the width direction and thin at one end, as shown in fig. 3 and 4, and an oil leakage hole 42 is disposed on one side of the guide plate 4.
The extractor hood as shown in fig. 5 comprises a smoke collecting hood 7, a fan system and a flow guide channel 6 arranged between the smoke collecting hood 7 and the fan system, wherein an inlet of the flow guide channel 6 is communicated with an outlet of the smoke collecting hood 7, an outlet of the flow guide channel 6 is communicated with the fan system, the structure of the fan system adopts the fan system structure, an outlet of the flow guide channel 6 is connected with the flow guide noise reduction frame 3, and at the moment, the thin end of the flow guide plate 4 is over-down, and the thick end of the flow guide plate is upward.
The flow guide and noise reduction cavity 31 in the flow guide and noise reduction frame 3 is divided into a plurality of sub sound absorption and flow guide cavities by the guide plates 4, the sub sound absorption and flow guide cavities can absorb part of noise generated in the running process of a centrifugal fan in the air box, the central speed of air flow entering the flow guide and noise reduction cavity 31 from the flow guide channel 6 at the lower end is greater than that at two ends, the flow guide plates 4 adopt a structure with a thin middle part and thick two ends to balance the air flow, and the flow guide holes 41 of the flow guide plates 4 can reduce pneumatic noise when the air flow flows through; meanwhile, the flow guide noise reduction cavity 31 also improves the oil path to a certain extent, and a part of grease can be intercepted by the flow guide holes 41 on the flow guide plate 4 and is discharged through the lower-end oil leakage hole 42. The sound absorption cotton on the inner side wall of the flow guide noise reduction cavity 31 can increase the absorption of the downward transmission noise of the bellows, reduce the mechanical vibration noise (such as a centrifugal fan and an impeller) at the upper end and partially reduce the pneumatic noise of the downward transmission.
Claims (13)
1. The utility model provides a fan system, includes the inside hollow bellows, is equipped with centrifugal fan in the bellows, is equipped with into wind gap and air outlet on the bellows, centrifugal fan's export with the air outlet intercommunication, its characterized in that: the air inlet of the air box is connected with a flow guide noise reduction frame, a flow guide noise reduction cavity is formed in the flow guide noise reduction frame, a flow guide plate is arranged in the flow guide noise reduction cavity, and a flow guide hole is formed in the flow guide plate.
2. The fan system of claim 1, wherein: the guide plate is provided with a plurality of blocks, and is arranged in the flow guide noise reduction cavity at intervals in parallel.
3. The fan system of claim 1 or 2, wherein: the guide plate is a hollow plate, and the guide holes are formed in the two sides of the hollow plate.
4. The fan system of claim 3, wherein: the flow guide holes on the two sides of the hollow plate are arranged in a staggered manner.
5. The fan system of claim 3, wherein: the guide plate adopts the thin hollow core slab that both ends are thick in the middle of in first direction, and first direction is length direction or width direction.
6. The fan system of claim 5, wherein: the guide plate adopts a hollow plate with one thick end and one thin end in the second direction, and the second direction is vertical to the first direction.
7. The fan system of claim 3, wherein: and one side of the guide plate is provided with an oil leakage hole.
8. The fan system of claim 1, wherein: the sound-absorbing cotton is arranged in the flow-guiding noise-reducing cavity.
9. The fan system of claim 1, wherein: the air inlet of the air box is arranged on the lower side of the air box, and the flow guide noise reduction frame is connected to the outer portion of the air inlet of the air box.
10. The fan system of claim 1, wherein: the size of the flow guiding and noise reducing frame is the same as that of the air inlet of the air box.
11. The fan system of claim 1, wherein: the oil smoke guiding device is characterized in that a guiding plate which guides oil smoke to the inlet of the centrifugal fan from the air inlet is arranged in the air box, one end of the guiding plate is connected to the air inlet of the air box, and the other end of the guiding plate extends to the inlet of the centrifugal fan.
12. The fan system of claim 11, wherein: the guide plate is an arc-shaped plate.
13. The utility model provides a range hood, includes collection petticoat pipe, fan system and is located the water conservancy diversion passageway between the two, the entry of water conservancy diversion passageway and the export intercommunication of collection petticoat pipe, the export and the fan system intercommunication of water conservancy diversion passageway, its characterized in that: the fan system structure adopts the fan system structure as claimed in claim 1, and the outlet of the flow guide channel is connected with the flow guide noise reduction frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222311210.5U CN218862944U (en) | 2022-08-31 | 2022-08-31 | Fan system and range hood using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222311210.5U CN218862944U (en) | 2022-08-31 | 2022-08-31 | Fan system and range hood using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218862944U true CN218862944U (en) | 2023-04-14 |
Family
ID=87372768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222311210.5U Active CN218862944U (en) | 2022-08-31 | 2022-08-31 | Fan system and range hood using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218862944U (en) |
-
2022
- 2022-08-31 CN CN202222311210.5U patent/CN218862944U/en active Active
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