CN221120371U

CN221120371U - Mute supercharging turbofan

Info

Publication number: CN221120371U
Application number: CN202322838897.2U
Authority: CN
Inventors: 孙新年
Original assignee: Henan Chelan Environmental Protection Technology Co ltd
Current assignee: Henan Chelan Environmental Protection Technology Co ltd
Priority date: 2023-10-23
Filing date: 2023-10-23
Publication date: 2024-06-11
Anticipated expiration: 2033-10-23

Abstract

The utility model provides a mute supercharging turbofan, which comprises: the volute, volute one end air intake department is through flexible piece fixedly connected with motor support, fixedly on the motor support be provided with the motor, the motor is located inside the volute to be connected with the turbine through the pivot drive. The air inlets at the upper end and the lower end of the volute are provided with volute sealing rings for rotary sealing at the positions close to the rim of the turbine. The flexible vibration reduction piece is arranged at the fixed connection part of the turbine fan, so that the generation of vibration and the transmission efficiency of the vibration can be greatly reduced, and the noise is further reduced. In addition, the dynamic seal structure arranged between the turbine and the volute can effectively reduce the backflow of air flow, reduce the leakage of air flow, improve the pressure inside the volute of the centrifugal fan and improve the air supply efficiency.

Description

Mute supercharging turbofan

Technical Field

The utility model relates to the technical field of turbo fans, in particular to a mute supercharging turbo fan

Background

Currently, turbofans are widely used in production and life, and they have an important role in production and life. In general, when the turbo fan is used, the turbo fan can have vibration and noise due to the influences of factors such as a manufacturing process, high rotating speed and the like of the turbo fan, wherein the vibration can cause loosening or even damage of parts of the turbo fan in a long-term use process, and the service life of the centrifugal fan is reduced. And the noise can influence the quality of the production and living environment of people.

In order to reduce vibration and noise caused by vibration, a mainstream mode at present is to reduce vibration of a turbine fan by improving manufacturing accuracy of a rotating shaft and mounting accuracy of the fan, so that noise is reduced. In this way, vibration and noise can be reduced, but the cost is too high, so that higher cost is required to be input in order to realize further vibration reduction and noise reduction, and the aim of reducing the cost and enhancing the efficiency is not facilitated.

In addition, in the rotation process of the existing turbine fan, due to the fact that a dynamic sealing structure is not provided or the dynamic sealing structure is unreasonable, the turbine fan can have the condition that air flow flows back, so that the internal pressure of the shell is small, and the air supply efficiency is greatly reduced.

Therefore, there is a need in the art for a centrifugal fan with a simple structure, vibration reduction and noise reduction, low cost, dynamic seal structure, and high air supply efficiency.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provide a mute booster turbine fan so as to solve the problems that the turbine fan in the prior art vibrates and has overlarge noise and does not have a dynamic sealing structure or has an imperfect dynamic sealing structure.

The utility model provides a silent booster turbo fan, comprising: the motor support is fixedly arranged on the motor, and the motor is positioned in the volute and is in driving connection with a turbine through a rotating shaft; the air inlets at the upper end and the lower end of the volute are close to the rim of the turbine, and volute sealing rings for rotary sealing are arranged at the positions of the air inlets at the upper end and the lower end of the volute.

Preferably, the turbine further comprises a hub and blades, wherein the hub is fixedly arranged at one end of the rotating shaft, a plurality of blades are uniformly distributed on the circumference of the hub, and the rim is positioned at the periphery of the blades and used for fixing the blades; the volute sealing ring is an annular movable sealing ring with an arc-shaped section, and the outer ring of the volute sealing ring is close to the outer edges of the upper side and the lower side of the rim and is matched with the rim to form a movable sealing structure.

In one embodiment, the outer edge of one side of the rim is provided with a turbine sealing ring, and the turbine sealing ring and the volute sealing ring are matched to form a dynamic sealing structure.

In one embodiment, the outer edges of the upper side and the lower side of the rim are respectively provided with a turbine sealing ring, and the turbine sealing rings are matched with the volute sealing rings to form a dynamic sealing structure.

Preferably, the turbine sealing ring is a U-shaped groove ring, and the outer edge of the volute sealing ring extends into the U-shaped groove of the turbine sealing ring.

Preferably, the side wall of the volute is provided with an air outlet, and a fairing for adjusting air flow is arranged at the air outlet.

Preferably, the air inlets at the upper end and the lower end of the volute are respectively provided with a filter for filtering air flow.

Preferably, the flexible member is a flexible column body with a fixing hole at the axis, and the outer wall of the flexible member is provided with an annular fixing groove, wherein a fixing column is arranged at the fixed connection position of the volute, and one end of the fixing column passes through the fixing hole and is fixed with the flexible member through the fixing member; the fixed connection part of the motor support is provided with an annular bayonet which is clamped in the annular fixing groove.

Further, the upper surface and the lower surface of the flexible piece are respectively provided with a milk nail for reducing the transmission efficiency of vibration; the outer wall of the flexible connecting piece is provided with a strip-shaped bulge for reducing the transmission efficiency of vibration.

Preferably, the volute comprises an upper shell and a lower shell, and the upper shell and the lower shell are connected in a buckling or screw mode.

According to the above embodiment, the mute booster turbo fan provided by the utility model has the following advantages:

1. Compared with the existing turbine fan, the flexible vibration reduction piece is arranged at the fixed connection part of the turbine fan, so that the generation of vibration and the transmission efficiency of the vibration can be greatly reduced, the noise is further reduced, and the service life of the fan is prolonged.

2. In this turbo fan, the dynamic seal structure that sets up between turbine and the volute can effectually reduce the condition of air current backward flow, reduces the air current and leaks, promotes the inside pressure of centrifugal fan volute, has improved air supply efficiency.

3. The filter can effectively prevent impurities with larger volume in the air flow from entering the volute, so that the volute or turbine is prevented from being damaged, and meanwhile, the cleanliness of the air flow at the air outlet is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the scope of the utility model, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

Fig. 1 is a cross-sectional view of a first embodiment of a silent booster turbo fan provided by the utility model.

Fig. 2 is a perspective view of a first embodiment of a silent booster turbo fan provided by the utility model.

Fig. 3 is a cross-sectional view of a second embodiment of a silent booster turbo fan provided by the utility model.

Fig. 4 is a cross-sectional view of a third embodiment of a silent booster turbo fan provided by the present utility model.

Fig. 5 is a cross-sectional view of a fourth embodiment of a silent booster turbo fan provided by the present utility model.

Fig. 6 is a perspective view of a fourth embodiment of a silent booster turbo fan provided by the present utility model.

Fig. 7 is an exploded view of a fourth embodiment of a silent booster turbo fan provided by the present utility model.

Fig. 8 is a cross-sectional view of a fifth embodiment of a silent booster turbine fan provided by the present utility model.

Fig. 9 is a perspective view of a mute booster turbo fan according to a fifth embodiment of the present utility model.

Fig. 10 is a cross-sectional view of a mute booster turbo fan embodiment six provided by the present utility model.

Fig. 11 is a cross-sectional view of a seventh embodiment of a silent booster turbo fan provided by the present utility model.

Fig. 12 is a perspective view of an eighth embodiment of a silent booster turbo fan provided by the present utility model.

Fig. 13 is a diagram of a flexible member of the silent booster turbo fan according to the present utility model.

Reference numerals illustrate:

1-volute, 2-flexible piece, 3-motor bracket, 4-motor, 5-rotating shaft, 6-turbine,

7-Cowling, 8-filter;

11-volute sealing rings, 12-fixed columns, 13-upper shells and 14-lower shells;

21-milk nails and 22-strip-shaped protrusions;

31-annular bayonet;

61-rim, 62-hub, 63-blades, 64-turbine seal ring;

81-filter frame.

Detailed Description

Various exemplary embodiments of the utility model will now be described in detail, which should not be considered as limiting the utility model, but rather as more detailed descriptions of certain aspects, features and embodiments of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the utility model described herein without departing from the scope or spirit of the utility model. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present utility model. The specification and examples of the present utility model are exemplary only.

The utility model provides a mute booster turbo fan, and a structural schematic diagram of a first embodiment of the turbo fan is shown in fig. 1 and 2. In specific embodiments, the turbine fan comprises a volute 1, wherein air inlets are formed in the upper end and the lower end of the volute 1, and a motor bracket 3 is fixedly connected to the air inlet at one end of the volute 1 through a flexible piece 2. Namely, the scroll and the motor bracket 3 are fixedly connected in a flexible connection mode, so that the vibration reduction effect is achieved, and the efficiency of transmitting vibration from the motor bracket 3 to the scroll 1 is reduced. The motor bracket 3 is fixedly provided with a motor 4, and the motor 4 is positioned in the volute 1 and is in driving connection with a turbine 6 through a rotating shaft 5. One end of the rotating shaft 5 is fixed on the motor 4 and can rotate under the drive of the motor 4. The other end is fixedly connected with the turbine 6 to drive the turbine 6 to rotate.

In addition, the air inlets at the upper and lower ends of the scroll 1 are provided with scroll sealing rings 11 for rotary sealing near the rim 61 of the turbine 6. The scroll sealing ring 11 is an annular movable sealing ring with an arc-shaped section, and the outer ring of the annular movable sealing ring is close to the outer edges of the upper side and the lower side of the rim 61 and is matched with the rim 61 to form a movable sealing structure. The volute sealing ring 11 and the rim 61 form a dynamic sealing structure, so that backflow of air flow from a gap between the volute 1 and the rim 61 is reduced, pressure inside the volute 1 and air speed at an air outlet are improved, and air supply efficiency of the turbine fan is improved.

Further, the turbine 6 also includes a hub 62 and blades 63. The hub 62 is fixedly mounted at one end of the rotating shaft 5, a plurality of blades 63 are uniformly distributed on the circumference of the hub 62, and the rim 61 is located at the periphery of the blades 63 and is used for fixing the blades 63.

In a specific embodiment of the present utility model, as shown in fig. 13, the flexible member 2 is a flexible column body with a fixing hole at the axis, and the outer wall of the flexible member 2 has an annular fixing groove. Wherein, the fixed connection position of the scroll 1 is provided with a fixed column 12, and one end of the fixed column 12 passes through the fixed hole and is fixed with the flexible piece 2 through a fixing piece. The fixed connection part of the motor bracket 3 is provided with an annular bayonet 31, and the annular bayonet 31 is clamped in the annular fixed groove. The flexible piece 2 can be used for fixedly connecting the volute 1 with the motor support 3 and simultaneously can be used for avoiding the rigid connection of the volute 1 with the motor support 3, so that the transmission efficiency of vibration is greatly reduced, and the noise caused by the vibration is further reduced.

Further, the upper and lower surfaces of the flexible member 2 and the annular fixing groove are provided with staples 21 for reducing the transmission efficiency of vibration. The milk nail 21 can reduce the contact area between the flexible member 2 and the scroll 1 or the motor bracket 3, and further can further reduce the transmission efficiency of vibration.

The flexible connector 6 has a bar-shaped protrusion 22 on an outer wall thereof for reducing transmission efficiency of vibration, and the bar-shaped protrusion is disposed along an axis direction. The strip-shaped protrusions 22 can reduce the contact area between the flexible member 2 and the scroll 1 or the motor bracket 3, and further can further reduce the transmission efficiency of vibration.

In the specific embodiment of the utility model, the volute 1 comprises an upper shell 13 and a lower shell 14, and the upper shell 13 and the lower shell 14 are connected in a buckling or screw mode. The structure facilitates the disassembly of the volute 1, the installation of the internal structure of the fan and the later maintenance. It will be appreciated that one side of the upper housing 13 of the scroll 1 is the front side of the scroll 1 and one side of the lower housing 14 of the scroll 1 is the back side of the scroll 1.

Fig. 3 is a cross-sectional view of a second embodiment of the silent booster turbo fan provided by the utility model. The difference between this embodiment and the embodiment shown in fig. 1 is that in this embodiment, the turbine seal ring 64 is provided at the outer edge of one side of the rim 61, and the turbine seal ring 64 and the scroll seal ring 11 cooperate to form a dynamic seal structure. In addition, the turbine seal ring 64 is integrally formed with the rim 61, thereby improving the structural strength of the rim 61.

Further, the turbine seal ring 64 in this embodiment is a U-shaped groove ring, and the outer edge of the scroll seal ring 11 extends into the U-shaped groove of the turbine seal ring 64. The structure design can prolong the backflow channel of the air flow, further reduce the backflow efficiency of the air flow, reduce pressure relief and maintain the air pressure in the volute 1.

Fig. 4 is a cross-sectional view of a third embodiment of the silent booster turbo fan provided by the utility model. In this embodiment, compared with the embodiment shown in fig. 1, the difference is that in this embodiment, the turbine seal ring 64 is provided on the outer edges of the upper and lower sides of the rim 61, and the turbine seal ring 64 and the scroll seal ring 11 cooperate to form a dynamic seal structure. In addition, the turbine seal ring 64 is integrally formed with the rim 61, thereby improving the structural strength of the rim 61.

Fig. 5-7 are schematic diagrams of a fourth embodiment of the silent turbo blower provided by the utility model. Compared with the embodiment shown in fig. 1, the difference between this embodiment and the embodiment is that in this embodiment, the air inlets at the upper and lower ends of the scroll 1 are both provided with a filter 8 for filtering the air flow, so as to filter the impurities in the air flow, and avoid the impurities with larger volume from entering the scroll 1 to damage the inner wall of the scroll 1 or the turbine 6. In this embodiment, the filter 8 is fixedly mounted at the air inlet of the scroll 1 through the filter frame 81.

Fig. 8 and 9 are schematic diagrams of a mute booster turbo fan according to a fifth embodiment of the present utility model. The difference between this embodiment and the embodiment shown in fig. 1 is that in this embodiment, the side wall of the scroll 1 has an air outlet, and a fairing 7 for adjusting the air flow is provided at the air outlet. The fairing can adjust the airflow at the air outlet, so that the airflow direction is concentrated, the influence of turbulent flow on the overall airflow is reduced, and the wind speed is improved.

Fig. 10 is a schematic diagram of a mute turbo fan according to a sixth embodiment of the present utility model. The difference between this embodiment and the embodiment shown in fig. 3 is that in this embodiment, the side wall of the scroll 1 has an air outlet, and a fairing 7 for adjusting the air flow is provided at the air outlet. The fairing can adjust the airflow at the air outlet, so that the airflow direction is concentrated, the influence of turbulent flow on the overall airflow is reduced, and the wind speed is improved.

Fig. 11 is a schematic diagram of a mute turbo fan according to a seventh embodiment of the present utility model. The difference between this embodiment and the embodiment shown in fig. 4 is that in this embodiment, the side wall of the scroll 1 has an air outlet, and a fairing 7 for adjusting the air flow is provided at the air outlet. The fairing can adjust the airflow at the air outlet, so that the airflow direction is concentrated, the influence of turbulent flow on the overall airflow is reduced, and the wind speed is improved.

Fig. 12 is a schematic diagram of an embodiment eight of the silent turbo blower provided by the present utility model. The difference between this embodiment and the embodiment shown in fig. 6 is that in this embodiment, the side wall of the scroll 1 has an air outlet, and a fairing 7 for adjusting the air flow is provided at the air outlet. The fairing can adjust the airflow at the air outlet, so that the airflow direction is concentrated, the influence of turbulent flow on the overall airflow is reduced, and the wind speed is improved.

The foregoing is merely illustrative of the embodiments of this utility model and any equivalent and equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this utility model.

Claims

1. A silent booster turbo fan, comprising: the device comprises a volute (1), wherein a motor bracket (3) is fixedly connected to an air inlet at one end of the volute (1) through a flexible piece (2), a motor (4) is fixedly arranged on the motor bracket (3), and the motor (4) is positioned in the volute (1) and is in driving connection with a turbine (6) through a rotating shaft (5);

the air inlets at the upper end and the lower end of the volute (1) are close to the rim (61) of the turbine (6), and a volute sealing ring (11) for rotary sealing is arranged at the position.

2. The silent booster turbo fan according to claim 1, wherein the turbine (6) further comprises a hub (62) and blades (63), wherein,

The wheel hub (62) is fixedly arranged at one end of the rotating shaft (5), a plurality of blades (63) are uniformly distributed on the circumference of the wheel hub (62), and the rim (61) is positioned at the periphery of the blades (63) and used for fixing the blades (63);

The volute sealing ring (11) is an annular movable sealing ring with an arc-shaped section, and the outer ring of the volute sealing ring is close to the outer edges of the upper side and the lower side of the rim (61) and is matched with the rim (61) to form a movable sealing structure.

3. The silent booster turbine fan according to claim 1, wherein the rim (61) has a turbine seal ring (64) at one side outer edge thereof, said turbine seal ring (64) cooperating with said volute seal ring (11) to form a dynamic seal.

4. The silent booster turbine fan according to claim 1, wherein the outer edges of the upper side and the lower side of the rim (61) are provided with turbine sealing rings (64), and the turbine sealing rings (64) and the volute sealing rings (11) are matched to form a dynamic sealing structure.

5. The silent booster turbine fan as claimed in claim 3 or 4, wherein the turbine seal ring (64) is a U-shaped groove ring, and the outer edge of the volute seal ring (11) extends into the U-shaped groove of the turbine seal ring (64).

6. The silent booster turbo fan according to claim 1, characterized in that the side wall of the scroll (1) has an air outlet, where a fairing (7) for adjusting the air flow is provided.

7. The silent booster turbo fan according to claim 1, wherein the air inlets at the upper and lower ends of the scroll (1) are provided with filters (8) for filtering the air flow.

8. The silent turbo blower according to claim 1, wherein the flexible member (2) is a flexible cylindrical body having a fixing hole at the axial center, and the outer wall of the flexible member (2) has an annular fixing groove, wherein,

The fixed connection position of the volute (1) is provided with a fixed column (12), and one end of the fixed column (12) passes through the fixed hole and is fixed with the flexible piece (2) through a fixing piece;

The fixed connection part of the motor bracket (3) is provided with an annular bayonet (31), and the annular bayonet (31) is clamped in the annular fixing groove.

9. The silent booster turbo fan according to claim 8, wherein the top surface, the bottom surface and the upper and lower surfaces of the annular fixing groove of the flexible member (2) are provided with milk nails (21) for reducing the transmission efficiency of vibration;

The outer wall of the flexible piece (2) is provided with a strip-shaped bulge (22) for reducing the transmission efficiency of vibration.

10. The silent booster turbo fan according to claim 1, wherein the scroll (1) comprises an upper housing (13) and a lower housing (14), and the upper housing (13) and the lower housing (14) are connected by means of a snap or screw.