CN210164687U - Range hood's fan and range hood - Google Patents
Range hood's fan and range hood Download PDFInfo
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- CN210164687U CN210164687U CN201920799397.3U CN201920799397U CN210164687U CN 210164687 U CN210164687 U CN 210164687U CN 201920799397 U CN201920799397 U CN 201920799397U CN 210164687 U CN210164687 U CN 210164687U
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- impeller
- fan
- range hood
- hub
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- 239000003517 fume Substances 0.000 claims 3
- 239000000779 smoke Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 11
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a fan of a range hood, which comprises a fan volute and an impeller component arranged in the fan volute, wherein the impeller component comprises a forward impeller consisting of a plurality of forward rotating impeller blades and a reverse impeller consisting of a plurality of reverse rotating impeller blades, and the forward impeller and the reverse impeller are coaxially arranged at intervals and have opposite rotating directions; simultaneously the utility model discloses still provide the range hood that should use above-mentioned fan, still including the collection petticoat pipe, the collection petticoat pipe is provided with the air inlet of three different width. The utility model discloses a forward impeller and reverse impeller are rotatory simultaneously, and the successive layer increases the inside static pressure of fan in the shortest distance, and the pressure boost effect is superior to the unidirectional rotation pressure boost, and the fan spiral case of the design of seting up gradually along the air intake to the direction of air outlet is adopted in the cooperation simultaneously, lets the inside static pressure of range hood progressively increase, produces the suction of continuation high strength to the oil smoke.
Description
Technical Field
The utility model belongs to the technical field of range hood, concretely relates to range hood's fan and range hood.
Background
The range hood has become one of indispensable kitchen household electrical appliances in modern families, and air volume, wind pressure and noise are the core indexes of the range hood. When the range hood is used, 85% of users feel that the range hood has small suction force and can not suck completely, and the users generally think that the suction force is large and the oil smoke suction effect is good, which is the greatest requirement for purchasing the range hood. In recent years, the whole industry collectively enters the age of large suction, the large-suction range hood also becomes the first choice for consumers to purchase range hoods, the market share is increased far faster than that of other types of range hoods, and the range hood is really generally accepted by the wide consumers.
As a core part of the range hood, the reasonability of a fan structure greatly affects the performance of the range hood, and the range hood on the market generally has the phenomena of small air pressure, incomplete suction, slow suction, high noise and the like; the power mechanism of the range hood is a centrifugal fan, and negative pressure is generated at the inlet of the range hood through the rotation of the fan to suck away oil smoke generated in a kitchen. At present, the working state pressure of the cigarette machine is about 200Pa generally (namely the air volume is 7 m)3Min), the pressure is still low for the residents on the low floors of the high-rise building (more than 25 floors). And the current state of the range hood is difficult to meet 7m in the peak cooking time period3Exhaust standard of/min. The characteristics of the centrifugal fan determine that the function of the centrifugal fan is positioned at large displacement, high static pressure is a short plate of the centrifugal fan, and the oil smoke suction effect is poor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects existing in the prior art, the utility model discloses a main aim at provides a fan and a range hood of a range hood, can solve the problem that the difficult oil absorption cigarette effect of kitchen range hood exhaust is not good.
In order to achieve the above object, the utility model provides an at first a range hood's fan, including fan spiral case and the impeller subassembly of setting in the fan spiral case, the impeller subassembly includes the forward impeller of constituteing by a plurality of forward rotation impeller blades and the reverse impeller of constituteing by a plurality of reverse rotation impeller blades, and forward impeller and reverse impeller are coaxial setting in interval and rotation direction opposite.
Furthermore, two or more groups of positive impellers and reverse impellers are arranged.
Further, the forward impellers and the reverse impellers are alternately arranged when being arranged in groups.
Further, the outer diameter of the impeller and the inner diameter of the corresponding fan volute are gradually reduced along the direction from the air inlet to the air outlet.
Furthermore, each forward rotating impeller blade and each reverse rotating impeller blade are respectively arranged on a hub connected with the output shaft of the motor and are uniformly arranged in a divergence shape by the axis of the hub, each blade is arranged at a certain torsion angle relative to the axis of the hub along the direction from the air inlet to the air outlet, the torsion angle at the bottom end close to the axis in the hub is 110 to 140 degrees, the torsion angle at the far end far away from the axis of the hub is 100 to 130 degrees, and the torsion angle at the bottom end is larger than the torsion angle at the far end.
Further, the diameter ratio of each hub to its corresponding impeller is 0.15 to 0.25.
Further, the wheel hub comprises a first wheel hub and a second wheel hub, and the first wheel hub and the second wheel hub are sleeved on the output shaft of the motor in a mutually staggered and spaced mode.
Furthermore, the forward impeller is fixed on a first hub directly connected with the output shaft of the motor, and the reverse impeller is fixed on a second hub connected with a gear between the forward impeller and the output shaft of the motor.
The utility model also provides a range hood, including collection petticoat pipe and foretell range hood's fan, range hood's fan is installed in collection petticoat pipe top.
Furthermore, the smoke collecting hood is provided with an upper air inlet hole, a middle air inlet hole and a lower air inlet hole, and the upper air inlet hole, the middle air inlet hole and the lower air inlet hole are arranged from small to large according to the size of the opening.
Compared with the prior art, the utility model discloses a forward impeller and reverse impeller are just reverse rotation simultaneously, successive layer increases the inside static pressure of fan in the shortest distance, the pressure boost effect is superior to the unidirectional rotation pressure boost, the fan spiral case of the design of closing up gradually along the air intake to the direction of air outlet is adopted in the cooperation simultaneously, let the inside static pressure of range hood progressively increase, produce the suction of continuation high strength to the oil smoke, when satisfying the standard of airing exhaust, reach the reinforcing oil smoke and draw together the effect, high-rise building has been solved, end floor layer kitchen range hood is aired exhaust difficultly, the not good problem of oil smoke absorption effect.
Drawings
Fig. 1 is a schematic structural view of a fan of a range hood of the present invention;
fig. 2 is a combined structure diagram of the impeller of the fan of the range hood of the present invention;
fig. 3 is a wheel hub combination structure diagram of the fan of the range hood of the present invention;
fig. 4 is a cross-sectional view of a second hub of a fan of a range hood of the present invention;
fig. 5 is a schematic view of a torsional angle at the bottom end of a fan of a range hood according to the present invention;
fig. 6 is a schematic view of a distal torsion angle of a fan blade of a range hood of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
the embodiment of the utility model provides a range hood's fan, as shown in fig. 1 and 2, including impeller subassembly and fan spiral case 3, impeller subassembly including forward impeller 1 and reverse impeller 2, forward impeller 1 comprises a plurality of forward rotation impeller blades 11, and reverse impeller 2 comprises a plurality of reverse rotation impeller blades 21, and forward impeller 1 and reverse impeller 2 are the coaxial setting in interval and rotation direction is opposite.
Therefore, when the fan works, the forward impeller 1 and the reverse impeller 2 rotate simultaneously, so that the airflow pressure is pushed forward inside the fan volute 3, the static pressure inside the fan can be quickly increased layer by layer within the shortest distance, continuous high-strength suction is generated for oil smoke, and the oil smoke suction effect is greatly enhanced.
The impeller external diameter and the fan volute 3 internal diameter that corresponds reduce gradually along the direction of air intake to the air outlet, and the design of such close up mode can inhale more gas to let the wind pressure progressively strengthen.
The hub 4 is connected with the motor output shaft 5, each forward rotation impeller blade 11 and each reverse rotation impeller blade 21 are respectively installed on the hub 4 and are uniformly arranged in a divergence shape by the axis of the hub 4, and each impeller blade is arranged in a certain torsion angle relative to the center of the hub 4 along the direction from the air inlet to the air outlet.
As shown in fig. 3, the hub 4 includes a first hub 41 and a second hub 42, and the first hub 41 and the second hub 42 are alternately sleeved on the motor output shaft 5, the forward impeller 1 is fixed on the first hub 41, and the reverse impeller 2 is fixed on the second hub 42.
As shown in fig. 4, the first wheel hub 41 is directly and fixedly connected with the motor output shaft 5, when the motor works, the motor output shaft 5 rotates forward, the first wheel hub 41 is driven to rotate forward and drive the forward rotating impeller blades 11 to rotate, and the forward impeller 1 starts to rotate forward; a plurality of gears 6 are arranged between the motor output shaft 5 and the second hub 42, the gears 6 can enable the second hub 42 and the motor output shaft 5 to rotate in opposite directions, the gears of the motor output shaft 5 are meshed with each gear 6, each gear 6 is meshed with the second hub 42, so that the forward rotation of the motor output shaft enables the second hub 42 to rotate reversely, the reverse rotation impeller blades 21 are driven to rotate in the opposite rotation direction to the forward rotation impeller blades 11, and the reverse impeller 2 synchronously rotates reversely.
Therefore, the effect that the forward impeller 1 and the reverse impeller 2 rotate reversely at the same time can be achieved, the wind pressure is rapidly pushed forward in the fan, and the suction force of the air inlet is enhanced.
As shown in fig. 5 and 6, the forward impeller blades 11 have a base end twist angle of 110 to 140 degrees, preferably 124 degrees in this embodiment, near the axial center of the first hub 41, and a distal end twist angle of 100 to 130 degrees, preferably 112.5 degrees in this embodiment, far from the axial center of the first hub 41, the base end twist angle being greater than the distal end twist angle. The diameter ratio of each hub 4 to its corresponding impeller is 0.15 to 0.25, preferably 0.2 in this embodiment. In the same way, the reverse impeller blades 21 are arranged in the structure and manner of the forward impeller blades 11 described above. The arrangement ensures that when the impeller blades rotate, the air can be better stirred to rotate, and larger wind power is generated
By adopting the structure, when the impeller rotates, the impeller blades drive the air to rotate, the forward impeller 1 and the reverse impeller 2 are staggered at intervals to ensure that the air flow pressure in the fan is pushed forward, faster upward air flow is generated, the air inlet of the range hood generates negative pressure to form strong suction, and finally, the oil smoke is sucked into the range hood along with the air flow, thereby achieving the effect of enhancing the oil smoke suction.
Example two:
the embodiment of the utility model provides a second provides a range hood, including the fan of the range hood that collection petticoat pipe 7 and embodiment one provided, collection petticoat pipe 7 is provided with three inlet port 71, range hood's fan is installed in collection petticoat pipe 7 top.
The air inlet holes 71 include an upper air inlet hole, a middle air inlet hole, and a lower air inlet hole, the lower air inlet hole having the largest width, the middle air inlet hole having the second largest width, and the upper air inlet hole having the smallest width. The lower air inlet hole has the largest width and larger air inflow, can ensure that rising oil smoke can be sucked in just by air flow rising, and reduces the diffusion of the oil smoke; the upper air inlet has small width and large negative pressure, and can ensure that rising diffused oil smoke is sucked in. By setting different air inlet widths, the range hood is ensured not to leak oil smoke, and the oil smoke absorption rate of the range hood is improved. And the large suction force generated by the turbine fan provided by the first embodiment is matched, high static pressure is provided on the premise of meeting the fan exhaust standard, and the problem that the range hood in the bottom floor kitchen is difficult to exhaust air and has poor oil smoke absorption effect in a high-rise building is solved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The fan of the range hood is characterized by comprising a fan volute and an impeller assembly arranged in the fan volute, wherein the impeller assembly comprises a forward impeller and a reverse impeller, the forward impeller is composed of a plurality of forward rotating impeller blades, the reverse impeller is composed of a plurality of reverse rotating impeller blades, and the forward impeller and the reverse impeller are coaxially arranged at intervals and have opposite rotating directions.
2. The fan of a range hood according to claim 1, wherein two or more sets of forward impellers and reverse impellers are provided.
3. The fan of a range hood according to claim 2, wherein the forward direction impeller and the reverse direction impeller are alternately arranged when being arranged in a group.
4. The fan of the range hood according to claim 1, wherein the outer diameter of the impeller and the inner diameter of the fan volute corresponding thereto are gradually reduced along a direction from the air inlet to the air outlet.
5. The fan of a range hood according to any one of claims 1 to 4, wherein each of the forward-rotation impeller blades and the reverse-rotation impeller blades is mounted on a hub connected to an output shaft of a motor, and is arranged in a manner of being dispersed uniformly about an axis of the hub, each of the impeller blades is disposed at a certain twist angle with respect to the axis of the hub along a direction from an air inlet to an air outlet, a bottom twist angle near the axis of the hub is 110 to 140 degrees, a distal twist angle far from the axis of the hub is 100 to 130 degrees, and the bottom twist angle is greater than the distal twist angle.
6. The fan of a range hood according to claim 5, wherein a diameter ratio of each hub to the corresponding impeller is 0.15 to 0.25.
7. The fan of claim 5 wherein the hub comprises a first hub and a second hub, and the first hub and the second hub are disposed on the output shaft of the motor in a staggered manner.
8. The fan of claim 7 wherein the forward impeller is fixed to a first hub directly connected to the motor output shaft and the reverse impeller is fixed to a second hub having a gear connected to the motor output shaft.
9. A range hood comprising a fume collecting hood and a fan of a range hood as claimed in any one of claims 1 to 8, wherein the fan of the range hood is mounted above the fume collecting hood.
10. The range hood according to claim 9, wherein the fume collecting hood is provided with an upper air inlet, a middle air inlet and a lower air inlet, and the upper air inlet, the middle air inlet and the lower air inlet are arranged from small to large according to the size of the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799397.3U CN210164687U (en) | 2019-05-30 | 2019-05-30 | Range hood's fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799397.3U CN210164687U (en) | 2019-05-30 | 2019-05-30 | Range hood's fan and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210164687U true CN210164687U (en) | 2020-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920799397.3U Active CN210164687U (en) | 2019-05-30 | 2019-05-30 | Range hood's fan and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210164687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021196112A (en) * | 2020-06-15 | 2021-12-27 | サンタ株式会社 | Oil removal filter |
-
2019
- 2019-05-30 CN CN201920799397.3U patent/CN210164687U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021196112A (en) * | 2020-06-15 | 2021-12-27 | サンタ株式会社 | Oil removal filter |
| JP7357361B2 (en) | 2020-06-15 | 2023-10-06 | サンタ株式会社 | oil removal filter |
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