CN210164667U - Centrally-mounted double-axial-flow centrifugal fan - Google Patents
Centrally-mounted double-axial-flow centrifugal fan Download PDFInfo
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- CN210164667U CN210164667U CN201920882383.8U CN201920882383U CN210164667U CN 210164667 U CN210164667 U CN 210164667U CN 201920882383 U CN201920882383 U CN 201920882383U CN 210164667 U CN210164667 U CN 210164667U
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Abstract
The utility model discloses a centrally-mounted double-axial-flow centrifugal fan, which comprises a double-output-shaft motor, an air channel, a centrifugal impeller and a fan, wherein the double-output-shaft motor is arranged in the central position of an air inlet of the air channel, and the centrifugal impeller and the fan which coaxially rotate are sequentially and respectively arranged along the output shaft directions of two sides of the double-output-shaft motor; the utility model discloses a cooperation that sets up biax motor and impeller and fan at the wind channel middle part makes the wind channel both sides air inlet even.
Description
Technical Field
The utility model belongs to the technical field of lampblack absorber fan and specifically relates to a put biaxial flow centrifugal fan in.
Background
In the prior art, a fan used in a range hood at present is basically a forward multi-blade centrifugal fan, a motor is fixed on one side of an air duct, an impeller is sleeved on a motor shaft and is driven to rotate by the motor, the impeller applies work to air to enable the air to obtain energy (static pressure and kinetic energy), the air flow enters the impeller along the axial direction and is turned under the action of the centrifugal fan, and the air flow is discharged through an air outlet of the fan under the radial centrifugal action. The fan structure is basically the same for all manufacturers, the homogenization is serious, and the motor is fixed on one side of the air duct, so that the air inlet area on one side of the air duct is occupied, and the performance of the air duct is seriously influenced.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide an in put biaxial flow centrifugal fan makes the wind channel both sides air inlet even through the cooperation that sets up double-shaft motor and impeller and fan at the wind channel middle part.
In order to achieve the above purpose, the utility model discloses technical scheme as follows:
the utility model provides a put biaxial flow centrifugal fan, includes dual output shaft motor, wind channel, centrifugal impeller and fan, dual output shaft motor sets up the central point of the air intake in wind channel puts, has set gradually coaxial pivoted respectively on the output shaft direction of dual output shaft motor both sides centrifugal impeller with the fan.
Furthermore, an air duct middle plate is arranged in the middle of an air inlet of the air duct.
Further, the air duct is integrally divided into two halves by the air duct middle plate.
Further, the double-output shaft motor is fixed on the air duct middle plate.
Furthermore, the two same centrifugal impellers are symmetrically arranged on output shafts on two sides of the double-output-shaft motor, and a shaft disc of the centrifugal impeller is sleeved on the output shaft of the double-output-shaft motor.
Further, the fans are axial flow fans, and two identical axial flow fans are symmetrically arranged on output shafts on two sides of the motor with the double output shafts and are respectively arranged on the outer sides of air inlets on two sides of the air duct.
Furthermore, a plurality of fan blades are arranged on a wheel disc of the centrifugal impeller along the radial direction, and the fan blades extend to the outer side of the air inlet of the air duct along the direction of the output shaft of the motor with the double output shafts.
Furthermore, the tail ends of output shafts on two sides of the motor with the double output shafts are provided with caps.
Furthermore, air inlet rings are arranged on the outer sides of the air inlets on the two sides of the air duct.
Further, the motor with double output shafts is an outer rotor motor.
The utility model discloses a set up a middle-placed double axial flow centrifugal fan, set up dual output shaft motor in wind channel central authorities, drive centrifugal impeller and the fan that sets up motor both sides in the wind channel air intake through the motor, realize that the air intake air inlet of wind channel both sides is even, it receives the influence of motor to have reduced wind channel one side air intake, the induced draft performance of fan has been promoted, the cooperation of fan and centrifugal impeller, the negative pressure area of wind channel air intake has been increased, the range of holding together the cigarette of air intake has been increased, under the unchangeable prerequisite of the amount of wind, the effect of inhaling the oil smoke has effectively been promoted; and compare in a centrifugal impeller's fan, centrifugal impeller's axial length is long in the wind channel air intake, and the oil smoke is along radial outflow in the axial gets into centrifugal impeller after in for the effective utilization ratio of centrifugal impeller blade is lower in length direction, sets up two centrifugal impeller after, and the effective utilization ratio of centrifugal impeller blade on length direction obtains improving, and centrifugal impeller shortens in the axial moreover, and is more steady during the rotation. Meanwhile, in the working process of the fan, oil smoke firstly passes through the fan, oil smoke gas flow collides with fan blades, partial oil stains are separated, the partial oil stains are thrown into the shell of the range hood by the fan and finally flow into an oil collecting box, and the residual oil smoke is separated by a centrifugal impeller, so that the oil separation degree of the fan is improved.
The utility model discloses among the preferred technical scheme, axial fan is adopted to the fan, and axial fan sets up in the outside of wind channel air intake, and axial fan can further promote holding together cigarette ability of fan in fan working process, and supplementary centrifugal impeller inhales more oil smoke in the wind channel.
Drawings
FIG. 1 is an exploded view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
To clearly illustrate the design concept of the present invention, the following description is made with reference to the examples.
The utility model provides a put biaxial flow centrifugal fan, includes dual output shaft motor, wind channel, centrifugal impeller and fan, dual output shaft motor sets up the central point of the air intake in wind channel puts, has set gradually respectively on the output shaft direction of dual output shaft motor both sides centrifugal impeller with the fan.
In order to clarify the technical solution of the present invention, the following description is made in the form of specific embodiments.
Example one
As shown in fig. 1 and 2, a centrally-mounted dual-axial-flow centrifugal fan includes a dual-output-shaft motor 8, an air duct 6, a centrifugal impeller, and a fan, where the dual-output-shaft motor 8 is disposed at a central position of an air inlet of the air duct 6, and the centrifugal impeller and the fan are sequentially disposed along output shafts on two sides of the dual-output-shaft motor 8, respectively.
In the above-mentioned example, the utility model discloses an in put double axial flow centrifugal fan, set up double output axle motor 8 in 6 central authorities in wind channel, double output axle motor 8 adopts external rotor electric machine in this example, drive 4 left centrifugal impeller that set up motor both sides in the air intake of wind channel 6 through the motor, right centrifugal impeller 9 and fan, it is even to realize the air intake air inlet in 6 both sides in wind channel, 6 one side air intake in wind channel is reduced and is received the influence of motor, the performance of induced drafting of fan has been promoted, fan and centrifugal impeller's cooperation, coaxial with fast the rotation under the motor drives, the regional area of negative pressure of wind channel air intake has been increased, the smoke collecting scope of air intake has been increased, under the unchangeable prerequisite of the amount of wind, the effect of inhaling oil smoke has effectively been. Compared with a fan with one centrifugal impeller, the axial length of the centrifugal impeller in an air inlet of an air duct is long, oil smoke enters the centrifugal impeller along the axial direction and then flows out along the radial direction, so that the effective utilization rate of the blades 9-2 of the centrifugal impeller in the length direction is low, the effective utilization rate of the blades 9-2 of the centrifugal impeller in the length direction is improved after the two centrifugal impellers are arranged, the centrifugal impeller is shortened in the axial direction, and the rotation is more stable.
Meanwhile, in the working process of the fan, oil smoke firstly passes through the fan, oil smoke gas flow collides with fan blades, partial oil stains are separated, the partial oil stains are thrown into the shell of the range hood by the fan and finally flow into an oil collecting box, and the residual oil smoke is separated by a centrifugal impeller, so that the oil separation degree of the fan is improved.
As shown in fig. 1, an air duct middle plate 5 is welded and fixed in an air duct 6, the air duct middle plate 5 divides the air duct 6 into two halves integrally, a through hole for accommodating a dual output shaft motor 8 is formed in the central portion of an air inlet of the air duct 6 of the air duct middle plate 5, four fixing convex blocks are arranged on the circumference of the dual output shaft motor 8, threaded through holes are formed in the fixing convex blocks, and the dual output shaft motor 8 is fixed on the air duct middle plate 5 through screw fixing pieces. Two output shafts of the double-output-shaft motor 8 are sequentially provided with a centrifugal impeller and an axial flow fan along the axial direction, shaft discs 9-1 of two identical centrifugal impellers are symmetrically sleeved on the output shafts at two sides of the double-output motor 8, and the length of blades 9-1 of the centrifugal impellers is half of the width of an air inlet of the air duct 6; on the basis of the centrifugal impeller, a left axial flow fan 3 and a right axial flow fan 10 are symmetrically installed on an output shaft of a double-output-shaft motor 8, the central part of the axial flow fan is sleeved on the output shaft, and the axial flow fan is integrally arranged on the outer sides of air inlets on two sides of an air duct 6; two caps 2 are symmetrically arranged at the tail ends of output shafts on two sides of a motor 8 with double output shafts, and the axial flow fan and the centrifugal impeller are fixed on the output shaft of the motor by the caps 2, so that the axial flow fan and the centrifugal impeller are prevented from being unstable in rotation and even falling off in the working process of the fan.
In the above example, the axial flow fan is arranged outside the air inlet of the air duct, and the axial flow fan can further improve the smoke gathering capacity of the fan in the working process of the fan, and the auxiliary centrifugal impeller sucks more oil smoke into the air duct 6.
The casing of the 6 air intakes in wind channel outside is gone up the circumference and is provided with the screw, and the air inlet circle 1 that the internal diameter is the same with the internal diameter of wind channel air intake passes through the screw fixation on the outside casing of 6 air intakes in wind channel, keeps off centrifugal impeller's rim plate among 6 air intakes in wind channel, further guarantees the rotatory stability of centrifugal impeller.
As shown in fig. 1, an air outlet is arranged above the air duct 6, and a check valve 7 is fixed in the air outlet through a screw.
Example two
The utility model provides a put biaxial flow centrifugal fan, includes dual output shaft motor 8, wind channel 6, centrifugal impeller and fan, dual output shaft motor 8 sets up the central point of the air intake of wind channel 6 puts, has set gradually centrifugal impeller and fan respectively along the output shaft direction of dual output shaft motor 8 both sides, wherein, be provided with four flabellums along radial direction on centrifugal impeller's the rim plate, the flabellum is followed dual output shaft motor 8's output shaft direction to the air intake outside in wind channel extends.
In the embodiment, the fan and the centrifugal impeller are integrally arranged, when the fan works, blades on a wheel disc of the centrifugal impeller rotate to form a negative pressure area in the air inlets on two sides of the air channel 6, the fan blades connected to the outer edge of the wheel disc of the centrifugal impeller rotate along with the rotation of the centrifugal impeller, and the fan formed by integrally forming the four fan blades plays a role in expanding the negative pressure area in the air inlet of the air channel, can improve the smoke collecting range of the fan and sucks the oil smoke dissipated in the shell of the range hood into the air channel 6; similarly, the four fan blades can be arranged to separate grease in oil smoke in one step, the centrifugal impeller is assisted to separate the grease, and the grease separation degree of the fan is improved.
It is noted that some of the structures may be selected differently than the specific examples given above. For example, the motor of the utility model can adopt other types of double output shaft motors besides the outer rotor motor; the connection and fixation mode of the air duct middle plate and the air duct in the air duct can be realized by a screw fixing piece besides welding; and the like, which can be made by those skilled in the art based on their basic skills based on an understanding of the inventive concept, and are not to be taken as an example herein.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as the protection scope of the invention.
Claims (10)
1. The middle-mounted double-axial-flow centrifugal fan is characterized by comprising a double-output-shaft motor, an air channel, a centrifugal impeller and a fan, wherein the double-output-shaft motor is arranged in the central position of an air inlet of the air channel, and the centrifugal impeller and the fan are sequentially and respectively coaxially rotated along the output shaft directions of two sides of the double-output-shaft motor.
2. The centrally-mounted biaxial flow centrifugal fan as claimed in claim 1, wherein an air duct middle plate is disposed in the middle of the air inlet of the air duct.
3. The centrally-mounted dual axial flow centrifugal fan of claim 2, wherein the duct midplate divides the duct into two halves integrally.
4. The centrally-mounted dual axial flow centrifugal fan of claim 3, wherein said dual output shaft motor is secured to said air duct midplane.
5. The centrally-mounted dual-axial-flow centrifugal fan of claim 1, wherein two identical centrifugal impellers are symmetrically arranged on two side output shafts of the dual-output-shaft motor, and a shaft disc of the centrifugal impeller is sleeved on the output shafts of the dual-output-shaft motor.
6. The centrally-mounted dual-axial-flow centrifugal fan of claim 1, wherein the fan is an axial-flow fan, and two identical axial-flow fans are symmetrically arranged on the output shafts at two sides of the motor with two output shafts and are respectively arranged at the outer sides of the air inlets at two sides of the air duct.
7. The centrally-mounted dual-axial-flow centrifugal fan according to claim 1, wherein a plurality of blades are disposed on a wheel disc of the centrifugal impeller along a radial direction, and the blades extend to an outer side of the air inlet of the air duct along an output shaft direction of the dual-output-shaft motor.
8. The centrally-mounted dual axial flow centrifugal fan of claim 1, wherein the dual output shaft motor is provided with caps at the ends of its two side output shafts.
9. The centrally-mounted double-axial-flow centrifugal fan as claimed in claim 1, wherein air inlet rings are arranged outside the air inlets on both sides of the air duct.
10. The centrally-mounted dual-axial-flow centrifugal fan of claim 1, wherein the dual-output-shaft motor is an outer-rotor motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920882383.8U CN210164667U (en) | 2019-06-13 | 2019-06-13 | Centrally-mounted double-axial-flow centrifugal fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920882383.8U CN210164667U (en) | 2019-06-13 | 2019-06-13 | Centrally-mounted double-axial-flow centrifugal fan |
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| CN210164667U true CN210164667U (en) | 2020-03-20 |
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| CN201920882383.8U Active CN210164667U (en) | 2019-06-13 | 2019-06-13 | Centrally-mounted double-axial-flow centrifugal fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131182A (en) * | 2019-06-13 | 2019-08-16 | 杭州老板电器股份有限公司 | Double axial-flow centrifugal fans are set in one kind |
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2019
- 2019-06-13 CN CN201920882383.8U patent/CN210164667U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131182A (en) * | 2019-06-13 | 2019-08-16 | 杭州老板电器股份有限公司 | Double axial-flow centrifugal fans are set in one kind |
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