CN216812197U

CN216812197U - High-speed centrifugal blower

Info

Publication number: CN216812197U
Application number: CN202220196206.6U
Authority: CN
Inventors: 蒋天楚
Original assignee: Wuxi Shanmu Power Technology Co ltd
Current assignee: Wuxi Shanmu Power Technology Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-24
Anticipated expiration: 2032-01-25

Abstract

The utility model relates to the technical field of fans, in particular to a high-speed centrifugal blower which is simple in structure, reduces the risk of sealing failure and has a good cooling effect and comprises a motor arranged in a motor shell and an impeller arranged in a worm gear shell.

Description

High-speed centrifugal blower

Technical Field

The utility model relates to the technical field of fans, in particular to a high-speed centrifugal blower.

Background

The centrifugal blower is a device capable of continuously supplying air, sucks in air, increases pressure and flow velocity of the air under the action of a rotating impeller, throws the air out by utilizing centrifugal force and changes the flow direction, and finally supplies air out from an air outlet.

The impeller is driven by the motor to rotate, the motor rotates at a high speed to generate heat, and the heat source is two: (1) the motor has large driving current and high voltage, and one of heat sources is arranged between the stator and the rotor of the motor. (2) The shafting rotates, the bearing position rotating linear speed is high, and high temperature is generated by friction. Therefore, a cooling system needs to be provided on the motor casing to prevent the motor from being heated, resulting in a complicated structure. The high-speed blower is large in pressure ratio and large in flow, the impeller is installed in the volute, the requirement on installation and sealing of the volute is high, the motor shell and the volute need to be well sealed, O-shaped rings, sealant and other sealers are commonly used, and if the sealers fail and leak, the pneumatic efficiency of the blower is affected, and the failure rate of the whole blower is increased.

Disclosure of Invention

In order to solve the problems that the existing centrifugal blower is complex in structure and easy to lose sealing effect due to a heat dissipation mechanism, the utility model provides a high-speed centrifugal blower which is simple in structure, capable of reducing the risk of losing sealing effect and good in motor cooling effect.

The technical scheme is as follows: the high-speed centrifugal blower is characterized in that the motor casing is communicated with the worm gear casing and is integrally formed, an air inlet is formed in the end portion of the motor casing, the motor comprises a motor stator fixed on the inner wall of the motor casing and a motor rotor penetrating through the motor stator, the motor stator is fixed on the inner wall of the motor casing, the motor rotor is supported on a bearing, and one end of the motor rotor extends into the worm gear casing and is connected with the impeller.

The motor is further characterized in that the motor stator is fixed on a stator annular plate, and the outer peripheral surface of the stator annular plate is connected with the inner wall of the motor shell through rib plates arranged at intervals;

a first bearing annular plate is arranged at the center of an air inlet of the motor shell through a first rib, a second bearing annular plate is arranged at the joint of the motor shell and the worm gear shell through a second rib, and two bearings are respectively arranged on the first bearing annular plate and the second bearing annular plate;

one end of the motor shell, which is connected with the worm gear shell, is provided with a reducing pipe, and the outer wall of the reducing pipe is provided with a reinforcing rib;

and a sealing cover plate is arranged in the center of the worm gear shell.

After the impeller is adopted, the motor shell is communicated with the worm gear shell and is molded together, the structure is simplified, the sealing structure is omitted, the failure risk of the sealer is avoided, when the impeller works, air enters from the air inlet, flows through the gap between the motor rotor and the motor stator, the heat on the surface of the motor is taken away, and the good cooling effect is effectively ensured; furthermore, the motor stator is fixed on the stator annular plate, and a gap air channel is reserved between the motor stator and the inner wall of the motor shell, so that the cooling effect can be further improved.

Drawings

FIG. 1 is a schematic view of a first perspective of the present invention;

FIG. 2 is a schematic diagram of a second perspective view of the structure of the present invention;

FIG. 3 is a schematic structural diagram of a motor housing and a worm gear housing;

FIG. 4 is a schematic view of a first perspective of the motor and impeller structure;

FIG. 5 is a second perspective view of the motor and impeller structure;

FIG. 6 is a cross-sectional view of the structure of the present invention.

Detailed Description

Referring to fig. 1 to 6, a high-speed centrifugal blower includes a motor disposed in a motor housing 1 and an impeller 3 disposed in a worm gear housing 2, the motor housing 1 is communicated with the worm gear housing 2 and is integrally formed, an air inlet 4 is disposed at an end of the motor housing 1, the motor includes a motor stator 5 fixed on an inner wall of the motor housing 1 and a motor rotor 6 passing through the motor stator 5, the motor stator 5 is fixed on the inner wall of the motor housing 1, and the motor rotor 6 is supported on a bearing 7 and one end of the motor rotor extends into the worm gear housing 2 to be connected with the impeller 3.

The fixing mode of the motor stator 5 is as follows: be fixed in stator annular plate 8, the inner wall of motor casing 1 is connected through the gusset 9 that the interval was evenly arranged to stator annular plate 8 outer peripheral face, and the clearance between gusset 9 can let the air flow through play better cooling effect.

4 central point in air inlet of motor casing 1 puts and is provided with first bearing annular plate 11 through first rib 10, and the junction of motor casing 1 and worm gear housing 2 is provided with second bearing annular plate 13 through second rib 12, and bearing 7 includes two and distributes and guarantees at 6 both ends of electric motor rotor that it can rotate steadily, and two bearings 7 are installed respectively in first bearing annular plate 11 and second bearing annular plate 13.

The one end that motor casing 1 and worm wheel shell 2 are connected is reducing pipe 14, can promote the velocity of flow that gets into 2 air of worm wheel shell, strengthens the holistic air-out effect of air-blower, and reducing pipe 14 outer wall is provided with strengthening rib 15, guarantees intensity. The worm gear shell 2 is centrally provided with a sealing cover plate 16.

The working principle is as follows: the motor works, the motor rotor 6 drives the impeller to rotate, air is sucked from the air inlet 4, flows through the motor stator 5 and the motor rotor 6 to be cooled, then enters the worm gear shell 2 through the reducing pipe 14 and is driven by the impeller to obtain the increase of pressure and flow velocity, and the air is thrown out under the action of centrifugal force and is discharged along the air outlet pipe 17 on the worm gear shell 2 to realize air supply.

Claims

1. A high-speed centrifugal blower comprises a motor and an impeller, wherein the motor is arranged in a motor shell, the impeller is arranged in a worm gear shell, the motor shell is communicated with the worm gear shell and is integrally formed, an air inlet is formed in the end portion of the motor shell, the motor comprises a motor stator fixed on the inner wall of the motor shell and a motor rotor penetrating through the motor stator, the motor stator is fixed on the inner wall of the motor shell, the motor rotor is supported on a bearing, and one end of the motor rotor extends into the worm gear shell to be connected with the impeller.

2. The high-speed centrifugal blower according to claim 1, wherein the motor stator is fixed to a stator annular plate, and the outer peripheral surface of the stator annular plate is connected with the inner wall of the motor casing through rib plates arranged at intervals.

3. The high-speed centrifugal blower according to claim 1, wherein a first bearing annular plate is disposed at a central position of the air inlet of the motor casing through first ribs, a second bearing annular plate is disposed at a joint of the motor casing and the worm gear casing through second ribs, and the bearings include two bearings which are respectively mounted on the first bearing annular plate and the second bearing annular plate.

4. The high-speed centrifugal blower according to claim 1, wherein the end of the motor casing connected with the worm gear casing is a reducing pipe, and the outer wall of the reducing pipe is provided with a reinforcing rib.

5. The high-speed centrifugal blower according to claim 1, wherein the worm gear housing is centrally provided with a sealing cover plate.