CN217761393U - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
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- CN217761393U CN217761393U CN202221948524.XU CN202221948524U CN217761393U CN 217761393 U CN217761393 U CN 217761393U CN 202221948524 U CN202221948524 U CN 202221948524U CN 217761393 U CN217761393 U CN 217761393U
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- impeller
- fan
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Abstract
The utility model provides a centrifugal fan, which comprises a casing, wherein the casing is in a volute shape, an oil nozzle for discharging oil dirt is detachably arranged at the bottom of the casing, and an oil discharge cavity of the oil nozzle is communicated with an inner cavity of the casing; the outer surface of the oil nozzle is provided with a serrated anti-slip structure, and the anti-slip structure comprises a plurality of inverted cone-shaped surfaces and a plurality of horizontal bosses. The air inlet is provided with an air guide ring, an impeller is arranged in the casing, and the air guide ring is perpendicular to the end face of the impeller and extends towards the inner cavity of the casing; the oil nozzle for discharging oil stain is arranged at the bottom of the machine shell, so that waste oil liquid accumulated at the bottom of the machine shell can be guided out in time, the cleanness of the inner cavity of the machine shell is kept, the continuous normal operation of the fan is ensured, and the service life of the fan is prolonged; the tedious work of manual periodic oil stain cleaning is avoided.
Description
Technical Field
The utility model relates to a fan technical field especially relates to a centrifugal fan.
Background
The centrifugal ventilator is one kind of ventilator, and the centrifugal ventilator mainly includes impeller, casing and driving motor, the impeller is the main acting part to produce wind pressure and transfer energy, the casing is mainly used to introduce and exhaust gas, and at the same time, to convert part of kinetic energy of gas into pressure energy; when the impeller rotates, the gas between the blades of the centrifugal fan obtains kinetic energy under the action of centrifugal force, is discharged from the periphery of the impeller, flows out to the outlet of the fan through the guide of the volute casing, so that negative pressure is formed at the central part of the impeller, external airflow continuously flows in for supplement, and the fan can discharge the gas.
Among the prior art, the centrifugal fan who is used for the oil extraction cigarette in the mill often appears in the condition of fan chassis bottom deposit waste oil, needs regularly to open the casing and clears up, and is very time-consuming.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings in the prior art, an object of the present invention is to provide a centrifugal fan for solving the problem of inconvenient cleaning of waste oil deposited at the bottom of the fan casing in the prior art.
In order to achieve the above and other related objects, the present invention provides a centrifugal fan, which comprises a casing, wherein the casing is in a volute shape, a nozzle for removing oil contamination is detachably mounted at the bottom of the casing, and an oil discharge cavity of the nozzle is communicated with an inner cavity of the casing;
the outer surface of the oil nozzle is provided with a serrated anti-slip structure, and the anti-slip structure comprises a plurality of inverted cone-shaped surfaces and a plurality of horizontal bosses.
The design has the advantages that the oil nozzle for discharging the oil stain is arranged at the bottom of the machine shell, so that the waste oil liquid accumulated at the bottom of the machine shell can be led out in time, the cleanness of the inner cavity of the machine shell is kept, the continuous normal operation of the fan is ensured, and the service life of the fan is prolonged; the tedious work of manual periodic oil stain cleaning is avoided.
Preferably, the casing left end face is equipped with the air intake, air intake department can dismantle and be connected with air inlet pipe connecting piece, both ends all are equipped with the flange about the air inlet pipe connecting piece.
The advantage of above-mentioned design lies in, sets up the convenient air inlet duct's of air inlet duct connecting piece installation.
Preferably, the air inlet is provided with an air guide ring, an impeller is installed in the casing, and the air guide ring is perpendicular to the end face of the impeller and extends towards the inner cavity of the casing.
The advantage of the above design lies in that the wind-guiding ring has the function of wind-gathering guiding, which can make the air flow entering the casing guide the impeller to the greatest extent, the air flow guided to the impeller obtains kinetic energy under the driving of the impeller, the air between the blades of the centrifugal ventilator obtains kinetic energy under the action of centrifugal force when the impeller rotates, and is discharged from the periphery of the impeller, and flows out to the outlet of the ventilator through the guiding of the volute casing, thereby forming negative pressure at the central part of the impeller, making the external air flow continuously flow in and supplement, thereby making the fan discharge air, so the wind-guiding ring can be favorable for forming negative pressure at the central part of the impeller, and making the external air flow supplement into the inner cavity of the casing.
Preferably, a driving motor is installed at the right end of the casing, and a base is arranged at the lower end of the driving motor.
The advantage of above-mentioned design lies in, through setting up the base at driving motor lower extreme, is favorable to driving motor's steady operation.
Preferably, a plurality of foundation bolt holes are formed in the base.
The advantage of above-mentioned design lies in, through rag bolt and rag bolt hole's being connected, can prevent that driving motor (fan) from shifting.
Preferably, a motor mounting disc is arranged between the right end of the shell and the mounting end face of the driving motor; the drive motor can dismantle the connection and be in the middle part of motor mounting disc, the outer fringe of motor mounting disc is equipped with the mounting panel, the mounting panel with the connection of dismantling of casing.
The advantage of above-mentioned design lies in, compares in prior art on the casing integrated into one piece set up the design of motor mounting disc, this application adopts the design of motor mounting disc and casing separation, can simplify the structure of single part, and then simplify the processing technology of part, improves batch production's efficiency.
Preferably, the casing is provided with a bolt mounting seat in an integrated manner, the outer edge of the motor mounting disc is provided with a positioning step in a molded manner, and the positioning step is matched with the bolt mounting seat.
The advantage of the above design is that the installation and positioning of the motor mounting disc on the casing can be facilitated through the positioning step and the bolt mounting seat.
As above, the utility model discloses a centrifugal fan has following beneficial effect: (1) The oil nozzle for discharging the oil stain is arranged at the bottom of the machine shell, so that the waste oil liquid accumulated at the bottom of the machine shell can be led out in time, the cleanness of an inner cavity of the machine shell is kept, the continuous normal operation of the fan is ensured, and the service life of the fan is prolonged; the tedious work of manually and periodically cleaning the oil stains is avoided; (2) The wind guide ring can be beneficial to forming negative pressure at the central part of the impeller and promoting external airflow to be supplemented into the inner cavity of the shell; (3) The motor mounting disc can be conveniently mounted and positioned on the shell through the positioning step and the bolt mounting seat.
Drawings
Fig. 1 is a front view of a centrifugal fan according to an embodiment of the present invention;
fig. 2 is a left side view of a centrifugal fan according to an embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
fig. 4 is an enlarged view of fig. 2 at B.
Wherein, the specific reference numbers are: casing 1, glib 2, oil extraction chamber 201, back taper face 202, horizontal boss 203, intake stack connecting piece 3, flange 301, wind-guiding circle 4, impeller 5, driving motor 6, base 601, rag bolt hole 602, motor mounting disc 7, bolt mount pad 701, location step 702, mounting panel 703, air outlet 8.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 4. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a centrifugal fan, including a casing 1, the casing 1 is in a volute shape, an air outlet 8 of the casing 1 faces upward, an air inlet is formed at a left end of the casing 1, the air inlet is detachably connected to an air inlet pipe connector 3, flanges 301 are respectively disposed at left and right ends of the air inlet pipe connector 3, and the air inlet is provided with the air inlet pipe connector 3 to facilitate installation of an air inlet pipe.
The bottom of the machine shell 1 is detachably provided with an oil nozzle 2 for discharging oil stains, and an oil discharge cavity 201 of the oil nozzle 2 is communicated with the inner cavity of the machine shell 1; the oil nozzle 2 for removing oil stains is arranged at the bottom of the machine shell 1, so that waste oil liquid accumulated at the bottom of the machine shell 1 can be led out in time, the cleanness of an inner cavity of the machine shell 1 is kept, the continuous normal operation of the fan is ensured, and the service life of the fan is prolonged; the tedious work of manually and periodically cleaning the oil stains is avoided.
Further, the outer surface of the oil nozzle 2 is provided with a serrated anti-slip structure, and the anti-slip structure comprises a plurality of inverted conical surfaces 202 and a plurality of horizontal bosses 203. An elastic oil guide pipe can be arranged on the oil nozzle 2, when the oil guide pipe is arranged, the oil guide pipe is sleeved on the inverted conical surface 202 of the oil nozzle 2 from the lower end, then the oil guide pipe is pushed upwards forcibly, and the inverted conical surface 202 and the horizontal boss 203 are matched to prevent the oil guide pipe from falling off.
The air inlet is provided with an air guide ring 4, an impeller 5 is arranged in the casing 1, and the air guide ring 4 is perpendicular to the end face of the impeller 5 and extends towards the inner cavity of the casing 1. The air guide ring 4 has the function of wind gathering and guiding, so that the air flow entering the casing 1 can be guided to the impeller 5 to the greatest extent, the guided air flow obtains kinetic energy under the driving of the impeller 5, when the impeller 5 rotates, the air among the blades of the centrifugal fan obtains the kinetic energy under the action of centrifugal force and is discharged from the periphery of the impeller 5, and the air flows out of an outlet of the fan through the guiding of the volute casing 1, so that negative pressure is formed in the central part of the impeller 5, external air flow continuously flows in and is supplemented, and the fan can discharge the air, therefore, the air guide ring 4 can be favorable for forming negative pressure in the central part of the impeller 5, and the external air flow is promoted to be supplemented into the inner cavity of the casing 1.
The right end of the machine shell 1 is provided with a driving motor 6, and the lower end of the driving motor 6 is provided with a base 601. The base 601 is arranged at the lower end of the driving motor 6, so that stable operation of the driving motor 6 is facilitated.
Further, a plurality of anchor bolt holes 602 are formed in the base 601. Can set up rag bolt in designed position (ground) in advance, through rag bolt and the connection of rag bolt hole 602, can prevent that driving motor 6 (fan) from shifting.
Preferably, a motor mounting disc 7 is arranged between the right end of the machine shell 1 and the mounting end face of the driving motor 6; the driving motor 6 is detachably connected to the middle of the motor mounting disc 7, a mounting plate 703 is arranged on the outer edge of the motor mounting disc 7, and the mounting plate 703 is detachably connected with the machine shell 1. In the present embodiment, the driving motor 6 and the casing 1 are respectively connected to the motor mounting plate by bolts.
Compare in prior art on casing 1 integrated into one piece set up the design of motor mounting disc 7, the design that motor mounting disc 7 and casing 1 separation were adopted to this embodiment, can simplify the structure of single part, and then simplify the processing technology of part, improve batch production's efficiency.
Preferably, a bolt mounting seat 701 is integrally formed on the casing 1, a positioning step 702 is formed at an outer edge portion of the motor mounting plate 7, and the positioning step 702 is matched with the bolt mounting seat 701. The installation and the positioning of the motor installation disc 7 on the machine shell 1 can be facilitated through the positioning step 702 and the bolt installation seat 701, and the installation efficiency of the motor is improved.
In summary, the oil nozzle for removing oil stains is arranged at the bottom of the casing, so that waste oil liquid accumulated at the bottom of the casing can be guided out in time, the cleanness of the inner cavity of the casing is kept, the fan can be ensured to be continuously normal, and the service life of the fan is prolonged in operation; the tedious work of manually and periodically cleaning the oil stains is avoided; the wind guide ring can be beneficial to forming negative pressure at the central part of the impeller and promoting external airflow to be supplemented into the inner cavity of the shell; the motor mounting disc can be conveniently mounted and positioned on the shell through the positioning step and the bolt mounting seat. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A centrifugal fan is characterized by comprising a casing, wherein the casing is in a volute shape, an oil nozzle for discharging oil dirt is detachably mounted at the bottom of the casing, and an oil discharge cavity of the oil nozzle is communicated with an inner cavity of the casing;
the outer surface of the oil nozzle is provided with a serrated anti-slip structure, and the anti-slip structure comprises a plurality of inverted cone-shaped surfaces and a plurality of horizontal bosses.
2. The centrifugal fan of claim 1, wherein: the casing left end face is equipped with the air intake, air intake department can dismantle and be connected with air inlet pipeline connecting piece, both ends all are equipped with the flange about the air inlet pipeline connecting piece.
3. The centrifugal fan of claim 2, wherein: the air inlet is provided with an air guide ring, an impeller is installed in the casing, and the air guide ring is perpendicular to the end face of the impeller and extends towards the inner cavity of the casing.
4. The centrifugal fan of claim 1, wherein: the right end of the shell is provided with a driving motor, and the lower end of the driving motor is provided with a base.
5. The centrifugal fan of claim 4, wherein: a plurality of foundation bolt holes are formed in the base.
6. The centrifugal fan of claim 4, wherein: a motor mounting disc is arranged between the right end of the shell and the mounting end face of the driving motor; the drive motor can be dismantled and connect in the middle part of motor mounting disc, the outer fringe of motor mounting disc is equipped with the mounting panel, the mounting panel with the connection dismantled of casing.
7. The centrifugal fan of claim 6, wherein: the integrated into one piece is equipped with the bolt mount pad on the casing, the marginal portion shaping of motor mounting disc has the location step, the location step with casing bolt mount pad cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221948524.XU CN217761393U (en) | 2022-07-26 | 2022-07-26 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221948524.XU CN217761393U (en) | 2022-07-26 | 2022-07-26 | Centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217761393U true CN217761393U (en) | 2022-11-08 |
Family
ID=83877863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221948524.XU Active CN217761393U (en) | 2022-07-26 | 2022-07-26 | Centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217761393U (en) |
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2022
- 2022-07-26 CN CN202221948524.XU patent/CN217761393U/en active Active
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