CN213450935U

CN213450935U - High-efficiency low-noise centrifugal fan

Info

Publication number: CN213450935U
Application number: CN202022364326.6U
Authority: CN
Inventors: 施红斌; 李刚; 陈斌
Original assignee: Wuhan Xinyibo Technology Co ltd
Current assignee: Wuhan Xinyibo Technology Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-06-15
Anticipated expiration: 2030-10-21

Abstract

The application relates to a high-efficiency low-noise centrifugal fan, which comprises a base, an air inlet pipeline, a fan shell, a motor, an impeller, an air outlet assembly and a diversion pipeline, the air inlet pipeline is arranged on one side of the fan shell, the motor is arranged on the other side of the motor shell, the impeller is arranged in the fan shell, the motor is connected with the impeller and drives the impeller to rotate, the air outlet assembly comprises an air outlet and a diversion pipeline communicated with the air outlet, the end surface of the air outlet is connected with a first mounting plate, the diversion pipeline is an L-shaped pipeline, one end of the diversion pipeline is fixedly provided with a second mounting plate, the second mounting plate is rotatably assembled on the first mounting plate, the rotating axial direction of the second mounting plate is coaxial with the central axial direction of the air outlet, the first mounting panel with be provided with between the second mounting panel and be used for fixing the retaining member of diversion pipeline. This application has the effect of adjusting centrifugal fan air-out direction.

Description

High-efficiency low-noise centrifugal fan

Technical Field

The application relates to the field of air conditioning equipment, in particular to a high-efficiency low-noise centrifugal fan.

Background

At present, the centrifugal fan is widely applied to the fields of factories, mines, tunnels, vehicles and the like, mainly plays a role in improving gas pressure and discharging gas, and is important equipment in the industrial production process.

An existing centrifugal fan comprises a base, an air inlet pipeline, a fan shell, a motor, an impeller and an air outlet, wherein the impeller is driven by the motor to rotate, air is sucked from the air inlet pipeline and flows through the impeller to enter a wider pipeline, kinetic energy is converted into pressure energy through air deceleration, pressure difference is generated, and therefore the air continuously enters from the air inlet pipeline and flows out from the air outlet.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the air outlet direction of the centrifugal fan is a fixed direction, and the air outlet direction of the air outlet cannot be adjusted under the condition that the centrifugal fan is integrally and fixedly installed, so that inconvenience is brought to use, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to improve the unadjustable problem of centrifugal fan air-out direction, this application provides a high-efficient type low noise centrifugal fan.

The application provides a high-efficient type low noise centrifugal fan adopts following technical scheme:

an efficient low-noise centrifugal fan comprises a base, an air inlet pipeline, a fan shell, a motor, an impeller, an air outlet assembly and a diversion pipeline, the air inlet pipeline is arranged on one side of the fan shell, the motor is arranged on the other side of the motor shell, the impeller is arranged in the fan shell, the motor is connected with the impeller and drives the impeller to rotate, the air outlet assembly comprises an air outlet and a diversion pipeline communicated with the air outlet, the end surface of the air outlet is connected with a first mounting plate, the diversion pipeline is an L-shaped pipeline, one end of the diversion pipeline is fixedly provided with a second mounting plate, the second mounting plate is rotatably assembled on the first mounting plate, the rotating axial direction of the second mounting plate is coaxial with the central axial direction of the air outlet, the first mounting panel with be provided with between the second mounting panel and be used for fixing the retaining member of diversion pipeline.

Through adopting above-mentioned technical scheme, the diversion pipeline can be relative air outlet terminal surface free rotation, and the diversion pipeline is L shape pipeline, can change the air-out direction from the axial to radial to can effectively improve the problem that centrifugal fan air-out direction is not adjustable through the fixed direction of adjusting of retaining member.

Preferably, the surface of the first mounting plate is provided with an annular groove coaxial with the air outlet, and the second mounting plate is provided with an annular bulge matched with the annular groove.

Through adopting above-mentioned technical scheme, the annular bulge of second mounting panel inserts in the ring channel of first mounting panel, and the annular bulge can rotate along the circumferencial direction in the ring channel, and then realizes the free rotation of the relative air outlet of diversion pipeline.

Preferably, a ball bearing is arranged between the annular groove and the annular bulge, and the centers of the ball bearing and the annular groove are the same.

Through adopting above-mentioned technical scheme, set up ball bearing between ring channel and annular bulge, reduce the relative frictional resistance between ring channel and the annular bulge, improve and rotate flexibility and stationarity.

Preferably, an annular gasket is arranged between the inner wall of the ball bearing and the annular bulge, and the circle center of the annular gasket is the same as that of the ball bearing.

Through adopting above-mentioned technical scheme, annular gasket reduces gaseous effusion, improves the gas tightness of device, increases the frictional force between ball bearing inner wall and the annular bulge simultaneously for ball bearing inner wall can follow the annular bulge and rotate, further improves and rotates flexibility and stationarity.

Preferably, open threaded hole on the first mounting panel, it has the corresponding round hole in position to open on the second mounting panel, the threaded hole with the round hole is opened has a plurality ofly, and lays along the circumference interval, first mounting panel with through passing between the second mounting panel the retaining member is fixed, the retaining member includes screw rod and nut, the screw rod passes the round hole, the nut supports tightly first mounting panel.

Through adopting above-mentioned technical scheme, bolted connection is passed through to first mounting panel and second mounting panel, and the pivoted position of fixed second mounting panel relative first mounting panel makes structural connection more stable.

Preferably, the fan shell is provided with an interlayer, and a sound insulation material is placed in the interlayer.

Through adopting above-mentioned technical scheme, set up the intermediate layer in the fan shell and place sound insulation material in the intermediate layer, reduce the noise that this centrifugal fan produced in the course of the work.

Preferably, the air inlet pipeline shape is for leaking hopper-shaped, the less one end of air inlet pipeline sectional area with fan shell links to each other, the great one end of air inlet pipeline sectional area is used for collecting external gas.

Through adopting above-mentioned technical scheme, the air intake structure that leaks hopper-shaped is favorable to this centrifugal fan to follow external absorbed gas, improves gas collection efficiency.

Preferably, the base includes motor bracket and double-deck frame, motor bracket arranges the motor below, motor bracket is used for the bearing motor, double-deck frame is used for the bearing the fan shell, double-deck frame with the fan platform links to each other, two-layer parallel and interval arrangement about the double-deck frame, double-deck frame top plate with the fan shell is connected, double-deck frame bottom plate and ground contact, two-layer spaced four corners position punishment of upper and lower of double-deck frame has the spring.

Through adopting above-mentioned technical scheme, set up the spring between the upper plate of double-deck frame and the lower floor's board, the vibration that this centrifugal fan produced in the course of the work can be absorbed to the spring, and noise abatement improves work efficiency.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the diversion pipeline can freely rotate relative to the end face of the air outlet through the rotation of the bearing, is an L-shaped pipeline, can convert the air outlet direction from the axial direction to the radial direction, and effectively solves the problem that the air outlet direction of the centrifugal fan is not adjustable;

2. the springs arranged in the double-layer rack interval and the sound insulation material arranged in the fan shell interlayer can reduce the working noise and improve the working efficiency;

3. funnel-shaped air inlet structure is favorable to this centrifugal fan to follow external absorbed gas, improves gas collection efficiency.

Drawings

FIG. 1 is a schematic structural diagram of an efficient low-noise centrifugal fan according to an embodiment of the present application;

fig. 2 is an exploded schematic view of the air outlet assembly according to the embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a sandwich of an embodiment of the present application;

FIG. 4 is a schematic structural view of a second mounting plate of an embodiment of the present application;

fig. 5 is a schematic structural diagram of a base according to an embodiment of the present application.

Reference numerals: 1. an air inlet pipeline; 2. a fan housing; 21. an interlayer; 22. sound-absorbing sponge; 3. an impeller; 4. a motor; 5. an air outlet assembly; 51. an air outlet; 52. a diversion pipeline; 53. a first mounting plate; 531. an annular groove; 532. a ball bearing; 533. an annular gasket; 534. a threaded hole; 54. A second mounting plate; 541. an annular projection; 542 a circular hole; 55. a locking member; 551. a screw; 552. a nut; 6. a base; 61. a motor bracket; 611. a column; 612. a ring; 62. a double-layer frame; 621. an upper plate; 622. a lower layer plate; 623. a spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses high-efficient type low noise centrifugal fan. Referring to fig. 1, the high-efficiency low-noise centrifugal fan includes an air inlet duct 1, a fan housing 2, an impeller 3, a motor 4, an air outlet assembly 5, and a base 6.

Referring to fig. 1, an air inlet duct 1 is disposed at one side of a fan housing 2, the air inlet duct 1 is shaped like a funnel, one end of the air inlet duct 1 having a smaller cross-sectional area is connected to the fan housing 2, and one end of the air inlet duct 1 having a larger cross-sectional area faces the outside for collecting outside air. The impeller 3 is driven by the motor 4 to rotate, the impeller 3 rotates to drive gas to flow in the fan shell 2, and the gas enters from the air inlet pipeline 1 and flows out from the air outlet 51. The main body of the fan casing 2 is volute-shaped, and one end extending outwards is an air outlet 51. The fan casing 2 is provided with an interlayer 21 (see fig. 3), and a sound-absorbing sponge 22 (or a shock-absorbing rubber) is placed in the interlayer 21.

Referring to fig. 1 and 2, the air outlet assembly 5 includes an air outlet 51 and a diversion duct 52, a first mounting plate 53 is integrally connected to an end surface of the air outlet 51, the first mounting plate 53 is an annular plate, and an annular groove 531 having the same circle center as that of the first mounting plate 53 and different radius is formed on a surface of the first mounting plate 53. The diversion pipeline 52 is L-shaped, a second mounting plate 54 is integrally connected to the outer periphery of the end face of one end of the diversion pipeline 52, the second mounting plate 54 and the first mounting plate 53 are identical in shape, and a corresponding annular protrusion 541 (see fig. 4) is integrally formed on the second mounting plate 54 at a position corresponding to the annular groove 531 of the first mounting plate 53. The annular groove 531 is also internally provided with a ball bearing 532, the outer wall of the ball bearing 532 is fixedly connected with the inner wall of the annular groove 531, and the inner wall of the ball bearing 532 is attached to the annular protrusion 541 of the second mounting plate 54. An annular gasket 533 is provided between the annular projection 541 and the inner wall of the ball bearing 532, the circle centers of the annular gasket 533 and the ball bearing 532 are the same, and the annular gasket 533 is made of rubber. The first mounting plate 53 is provided with a threaded hole 534, the second mounting plate 54 is provided with a round hole 542 corresponding to the position, the first mounting plate 53 and the second mounting plate 54 are fixed through a locking piece 55 penetrating through the round hole 542, the locking piece 55 comprises a screw 551 and a nut 552, the screw 551 and the nut 552 penetrate through the round hole 542, the nut 552 tightly abuts against the first mounting plate 53, and then the first mounting plate 53 and the second mounting plate 54 are fastened and connected.

Referring to fig. 1 and 5, the base 6 includes a motor bracket 61 and a double-layered frame 62, and the motor bracket 61 is disposed below the motor 4 to hold the motor 4. An upright post 611 is vertically welded on the bottom surface of the motor bracket 61, and semicircular supporting rings 612 are symmetrically welded on the other end of the upright post 611 and respectively support the motor 4 and a part of the fan shell 2. The height of the double-layer frame 62 is lower than that of the motor bracket 61, the double-layer frame 62 is horizontally welded on the motor bracket 61, an upper plate 621 of the double-layer frame 62 is welded with the fan housing 2, a lower plate 622 of the double-layer frame 62 is arranged on the ground, and springs 623 are distributed at four corners between the upper plate 621 and the lower plate 622 of the double-layer frame 62. The springs 623 are welded to the upper 621 and lower 622 plate surfaces. The reduction of noise due to mechanical vibration is achieved by the spring 623.

The implementation principle of the high-efficiency low-noise centrifugal fan in the embodiment of the application is as follows: the end face of the air outlet 51 is integrally connected with a first mounting plate 53, the surface of the first mounting plate 53 is provided with an annular groove 531 which has the same circle center as the first mounting plate 53 and has a different radius, one end of the diversion pipeline 52 is integrally connected with a second mounting plate 54, and the surface of the second mounting plate 54 is provided with a corresponding annular bulge 541. Still be equipped with a ball bearing 532 between annular arch 541 and the annular groove 531, annular arch 541 drives the rotation of ball bearing 532 inner wall, and then realizes the rotation of diversion pipeline 52 relative air outlet 51 terminal surface, and diversion pipeline 52 is the L shape, can change the air-out direction from the axial into radially, effectively improves the unadjustable problem of centrifugal fan air-out direction.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a high-efficient type low noise centrifugal fan, includes base (6), air inlet duct (1), fan shell (2), motor (4), impeller (3), air-out subassembly (5) and diversion pipeline (52), air inlet duct (1) sets up one side of fan shell (2), motor (4) are arranged the opposite side of motor (4) shell, impeller (3) are arranged inside fan shell (2), motor (4) with impeller (3) link to each other and drive impeller (3) rotate, its characterized in that, air-out subassembly (5) include air outlet (51) and with diversion pipeline (52) of air outlet (51) intercommunication, the terminal surface of air outlet (51) is connected with first mounting panel (53), diversion pipeline (52) are L shape pipeline, the one end of diversion pipeline (52) has set firmly second mounting panel (54), the second mounting plate (54) is rotatably assembled on the first mounting plate (53) and the rotating axial direction of the second mounting plate is coaxial with the central axial direction of the air outlet (51), and a locking piece (55) used for fixing the turning pipeline (52) is arranged between the first mounting plate (53) and the second mounting plate (54).

2. The high efficiency, low noise centrifugal fan of claim 1, wherein: first mounting panel (53) surface open have with air outlet (51) coaxial annular groove (531), second mounting panel (54) be provided with annular groove (531) matched with annular protrusion (541).

3. The high efficiency, low noise centrifugal fan of claim 2, wherein: a ball bearing (532) is arranged between the annular groove (531) and the annular protrusion (541), and the circle centers of the ball bearing (532) and the annular groove (531) are the same.

4. The high efficiency, low noise centrifugal fan of claim 3, wherein: an annular gasket (533) is arranged between the inner wall of the ball bearing (532) and the annular bulge (541), and the circle center of the annular gasket (533) is the same as that of the ball bearing (532).

5. The high efficiency, low noise centrifugal fan of claim 1, wherein: the mounting structure is characterized in that a threaded hole (534) is formed in the first mounting plate (53), round holes (542) corresponding to the positions are formed in the second mounting plate (54), the threaded hole (534) and the round holes (542) are formed in a plurality and are distributed at intervals along the circumferential direction, the first mounting plate (53) and the second mounting plate (54) are fixed through a locking piece (55) penetrating through the round holes (542), the locking piece (55) comprises a screw rod (551) and a nut (552), the screw rod (551) penetrates through the round holes (542), and the nut (552) abuts against the first mounting plate (53).

6. The high efficiency, low noise centrifugal fan of claim 1, wherein: the fan shell (2) is provided with an interlayer (21), and a sound insulation material is placed in the interlayer (21).

7. The high efficiency, low noise centrifugal fan of claim 1, wherein: air inlet pipe (1) shape is for leaking hopper-shaped, the less one end of air inlet pipe (1) sectional area with fan shell (2) link to each other, the great one end of air inlet pipe (1) sectional area is used for collecting external gas.

8. The high efficiency, low noise centrifugal fan of claim 1, wherein: base (6) include motor bracket (61) and double-deck frame (62), motor bracket (61) are arranged motor (4) below, motor bracket (61) are used for bearing motor (4), double-deck frame (62) are used for the bearing fan shell (2), double-deck frame (62) with motor bracket (61) link to each other, two-layer parallel and interval arrangement about double-deck frame (62), double-deck frame (62) upper plate (621) with fan shell (2) are connected, plywood (622) and ground contact under double-deck frame (62), two-layer spaced four corners position punishment has spring (623) about double-deck frame (62).