CN212563724U - High-speed direct-drive centrifugal blower - Google Patents
High-speed direct-drive centrifugal blower Download PDFInfo
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- CN212563724U CN212563724U CN202021082832.XU CN202021082832U CN212563724U CN 212563724 U CN212563724 U CN 212563724U CN 202021082832 U CN202021082832 U CN 202021082832U CN 212563724 U CN212563724 U CN 212563724U
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Abstract
The utility model discloses a high-speed centrifugal blower that directly drives, motor casing on including the motor base and locating the motor base, install stator module on motor casing's the inner wall, first bearing frame and second bearing frame are installed relatively respectively at motor casing's both ends, install first tilting pad bearing on the first bearing frame, install the second tilting pad bearing on the second bearing frame, rotate on first tilting pad bearing and the second tilting pad bearing and install the rotor subassembly, the one end of rotor subassembly stretches out the second bearing frame and installs the impeller subassembly. The high-speed permanent magnet motor is adopted to replace the traditional low-speed motor and a gear speed increasing box, so that a high-speed gear box and a coupling are omitted, the size is small, the mechanical loss is small, and the efficiency is higher; the bearing portion of the permanent magnet motor adopts a small tilting pad bearing, the power consumption of the bearing is low, the high-speed operation of the unit can be realized, and the high-speed tilting pad bearing has the advantages of high safety and strong adaptability and is low in failure rate by relying on the structural characteristics of the tilting pad bearing.
Description
Technical Field
The utility model relates to an air-blower equipment technical field, concretely relates to high-speed centrifugal blower that directly drives.
Background
At present, a motor and a gear box are used for transmission of a common centrifugal blower, and the rotating speed of the motor is increased to the rotating speed required by an impeller through a high-speed gear box. The high-speed gear box needs to transmit power and movement, generally needs to be supported by a dynamic pressure sliding bearing, and has better stability and applicability under the condition of larger displacement and pressure ratio. However, for the application scenarios of medium and small displacement and medium and small pressure ratio, the bearing power consumption, the gear meshing power consumption and the blast oil stirring power consumption of the gear box are large, so that the overall efficiency is low, and the whole unit of the gear transmission blower is large in size.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem is, how to optimize centrifugal blower's structure, makes its more traditional air-blower volume littleer operating efficiency higher.
In order to solve the problem, the utility model provides a high-speed centrifugal blower that directly drives, motor casing on including the motor base and locating the motor base, install stator module on motor casing's the inner wall, first bearing frame and second bearing frame are installed relatively respectively at motor casing's both ends, install first tilting pad bearing on the first bearing frame, install the second tilting pad bearing on the second bearing frame, rotate on first tilting pad bearing and the second tilting pad bearing and install the rotor subassembly, the one end of rotor subassembly stretches out the second bearing frame and installs the impeller subassembly.
Furthermore, a first oil inlet hole and a first oil return hole are formed in the first bearing seat, and the first oil inlet hole is communicated with a cooling oil channel of the first tilting pad bearing; the outer end of the first bearing seat is provided with a blind cover, the inner end of the first bearing seat is provided with a first oil seal, the rotor assembly is rotatably arranged on the blind cover and the first oil seal, and gaps are reserved between the first tilting pad bearing and the blind cover and between the first tilting pad bearing and the first oil seal and are respectively communicated with the first oil return hole.
Furthermore, all be equipped with the laminating on blind lid and the first oil blanket the labyrinth seal portion of the circumference outer wall of rotor subassembly, just the cavity of the labyrinth seal portion of first oil blanket passes through the cooling oil cavity intercommunication in oil return hole and the first bearing frame.
Furthermore, a second oil inlet hole and a second oil return hole are formed in the second bearing seat, and the second oil inlet hole is communicated with a cooling oil channel of the second tilting pad bearing; and a second oil seal and a third oil seal are correspondingly arranged at two ends of the second bearing seat respectively, the rotor assembly is rotatably arranged on the second oil seal and the third oil seal, and gaps are reserved between the second tilting pad bearing and the second oil seal as well as between the second tilting pad bearing and the third oil seal and are respectively communicated with the second oil return hole.
Further, all be equipped with the laminating on second oil blanket and the third oil blanket the labyrinth seal portion of the circumference outer wall of rotor subassembly, just the cavity of the labyrinth seal portion of second oil blanket, third oil blanket is through the cooling oil cavity intercommunication in corresponding oil return hole and the second bearing frame respectively.
Furthermore, a cooling channel communicated with a gap between the motor shell and the stator assembly in the motor shell is arranged on the motor base.
Further, thrust bearings for restraining axial freedom degrees of the rotor assembly are respectively arranged on two sides of the second tilting pad bearing.
Further, the second tilting pad bearing is a tilting pad radial thrust composite bearing integrating a tilting pad radial bearing and two-side thrust bearings.
Compared with the prior art, the technical scheme of the utility model have following advantage:
the high-speed direct-drive centrifugal blower provided by the utility model adopts the design of the high-speed permanent magnet motor to replace the traditional low-speed motor and the gear speed increasing box, thereby omitting a high-speed gear box and a shaft coupling, having small volume, small mechanical loss and higher efficiency; the bearing portion of the permanent magnet motor adopts a small tilting pad bearing, the power consumption of the bearing is low, the high-speed operation of the unit can be realized, and the bearing portion also has the advantages of high safety and strong adaptability compared with an air suspension air blower and a magnetic suspension air blower by relying on the structural characteristics of the tilting pad bearing, and the failure rate is low.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a structural diagram of a high-speed direct-drive centrifugal blower according to an embodiment of the present invention;
fig. 2 is a sectional structure view of a high-speed direct-drive centrifugal blower according to an embodiment of the present invention;
fig. 3 is a structural view of a second tilting pad bearing according to an embodiment of the present invention.
Wherein the reference numerals are:
1. the motor comprises a motor base, 2, a motor shell, 3, a stator assembly, 4, a first bearing seat, 5, a second bearing seat, 6, a first tilting pad bearing, 7, a second tilting pad bearing, 8, a rotor assembly, 9, an impeller assembly, 10, a first oil inlet hole, 11, a first oil return hole, 12, a blind cover, 13, a first oil seal, 14, a second oil inlet hole, 15, a second oil return hole, 16, a second oil seal, 17, a third oil seal, 18, a cooling channel, 19 and a thrust bearing.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "fitted" are to be understood broadly, for example, the connection may be a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Please refer to fig. 1 and fig. 2, the utility model provides a high-speed centrifugal blower that directly drives, motor casing 2 on motor casing 1 is included and is located to motor casing 1, install stator module 3 on motor casing 2's the inner wall, first bearing frame 4 and second bearing frame 5 are installed respectively relatively at motor casing 2's both ends, install first tilting pad bearing 6 on the first bearing frame 4, install second tilting pad bearing 7 on the second bearing frame 5, rotate on first tilting pad bearing 6 and the second tilting pad bearing 7 and install rotor subassembly 8, the one end of rotor subassembly 8 stretches out second bearing frame 5 and installs impeller subassembly 9.
Specifically, the utility model discloses a high-speed direct-drive centrifugal blower, which adopts the design of a high-speed permanent magnet motor to replace the traditional low-speed motor and a gear speed increasing box, saves a high-speed gear box and a coupling, and has small volume, small mechanical loss and higher efficiency; the bearing portion of the permanent magnet motor adopts a small tilting pad bearing, the power consumption of the bearing is low, the high-speed operation of the unit can be realized, and the bearing portion also has the advantages of high safety and strong adaptability compared with an air suspension air blower and a magnetic suspension air blower by relying on the structural characteristics of the tilting pad bearing, and the failure rate is low. The stator assembly 3, the rotor assembly 8 and the impeller assembly 9 of the blower of the permanent magnet motor are conventional structures, and the structures and the working principles thereof are well known to those skilled in the art and will not be described in detail herein.
As an improvement, a first oil inlet hole 10 and a first oil return hole 11 are arranged on the first bearing seat 4, and the first oil inlet hole 10 is communicated with a cooling oil channel of the first tilting pad bearing 6; a blind cover 12 is installed at the outer end of the first bearing seat 4, a first oil seal 13 is installed at the inner end of the first bearing seat 4, the rotor assembly 8 is rotatably installed on the blind cover 12 and the first oil seal 13, and gaps are reserved among the first tilting pad bearing 6, the blind cover 12 and the first oil seal 13 and are respectively communicated with the first oil return hole 11. As shown in fig. 2, the first tilting pad bearing 6 is installed in the middle of the first bearing seat 4, the first oil inlet 10 penetrates through the middle side wall of the first bearing seat 4 and reaches the first tilting pad bearing 6, the blind cover 12 and the first oil seal 13 are located on the left side and the right side of the first tilting pad bearing 6 on the first bearing seat 4 and respectively form left and right cavities at intervals with the first tilting pad bearing 6, and the lubricating oil flows into the left and right cavities after flowing into the bearing for lubricating and cooling and then flows back through the first oil return hole 11.
Preferably, the blind cover 12 and the first oil seal 13 are both provided with labyrinth sealing parts attached to the circumferential outer wall of the rotor assembly 8, and the cavity of the labyrinth sealing part of the first oil seal 13 is communicated with the cooling oil cavity in the first bearing seat 4 through an oil return hole. The inner wall of the first oil seal 13 is provided with a plurality of annular seal teeth with precise small gaps, a series of closure gaps and expansion cavities are formed between the teeth, partial lubricating oil can be decompressed layer by layer when flowing through the cavity at the labyrinth seal part, and finally returns to the cavity inside the bearing seat through the oil return hole on the side wall of the oil seal at the bottom of the cavity.
As another improvement, similar to the design of the cooling channel at the first bearing seat, a second oil inlet 14 and a second oil return hole 15 are provided on the second bearing seat 5, and the second oil inlet 14 is communicated with the cooling oil channel of the second tilting pad bearing 7; and a second oil seal 16 and a third oil seal 17 are correspondingly arranged at two ends of the second bearing seat 5 respectively, the rotor assembly 8 is rotatably arranged on the second oil seal 16 and the third oil seal 17, and gaps are reserved between the second tilting pad bearing 7 and the second oil seal 16 and the third oil seal 17 and are respectively communicated with the second oil return hole 15. As shown in fig. 2, the second tilting pad bearing 7 is installed in the middle of the second bearing housing 5, the second oil inlet 14 penetrates through the middle side wall of the second bearing housing 5 and reaches the second tilting pad bearing 7, the second oil seal 16 and the third oil seal 17 are located on the second bearing housing 5 on the left and right sides of the second tilting pad bearing 7, and respectively keep a distance from the second tilting pad bearing 7 to form left and right cavities, and the low-temperature lubricating oil flows into the left and right cavities after flowing into the bearing for lubrication and cooling, and then flows into the left and right cavities, and returns through the second oil return hole 15.
Preferably, similar to the first oil seal 13, labyrinth seal portions fitted to the circumferential outer wall of the rotor assembly 8 are provided on the second oil seal 16 and the third oil seal 17, and cavities of the labyrinth seal portions of the second oil seal 16 and the third oil seal 17 are respectively communicated with a cooling oil cavity in the second bearing block 5 through corresponding oil return holes.
Preferably, the motor base 1 is further provided with a cooling channel 18 communicating a gap between the motor housing 2 and the stator assembly 3 in the motor housing 2, and the cooling channel 18 may be provided with a left channel and a right channel, which may form a loop.
Further, thrust bearings 19 for restraining the axial degree of freedom of the rotor assembly 8 are respectively arranged on two sides of the second tilting pad bearing 7, and the thrust bearings 19 are used for restraining the axial degree of freedom of the rotor assembly 8. Preferably, the thrust bearing 19 may be a separate bearing component, or may be integrated with the tilting pad radial bearing, and in this case, the second tilting pad bearing 7 is a tilting pad radial thrust composite bearing integrating the tilting pad radial bearing and the two-side thrust bearing.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a high-speed centrifugal blower that directly drives, includes motor base (1) and locates motor casing (2) on motor base (1), its characterized in that: install stator module (3) on the inner wall of motor casing (2), first bearing frame (4) and second bearing frame (5) are installed relatively respectively at the both ends of motor casing (2), install first tilting pad bearing (6) on first bearing frame (4), install second tilting pad bearing (7) on second bearing frame (5), rotate on first tilting pad bearing (6) and second tilting pad bearing (7) and install rotor subassembly (8), the one end of rotor subassembly (8) stretches out second bearing frame (5) and installs impeller subassembly (9).
2. A high speed direct drive centrifugal blower as set forth in claim 1 wherein: a first oil inlet hole (10) and a first oil return hole (11) are formed in the first bearing seat (4), and the first oil inlet hole (10) is communicated with a cooling oil channel of the first tilting pad bearing (6); blind cover (12) are installed to the outer end of first bearing frame (4), first oil blanket (13) are installed to the inner of first bearing frame (4), rotor subassembly (8) rotate to be installed on blind cover (12) and first oil blanket (13), all leave the clearance and communicate with first oil return hole (11) respectively between first tilting pad bearing (6) and blind cover (12) and first oil blanket (13).
3. A high speed direct drive centrifugal blower as set forth in claim 2 wherein: the blind cover (12) and the first oil seal (13) are respectively provided with a labyrinth seal part which is attached to the circumferential outer wall of the rotor assembly (8), and the cavity of the labyrinth seal part of the first oil seal (13) is communicated with the cooling oil cavity in the first bearing seat (4) through an oil return hole.
4. A high speed direct drive centrifugal blower as set forth in claim 1 wherein: a second oil inlet hole (14) and a second oil return hole (15) are formed in the second bearing block (5), and the second oil inlet hole (14) is communicated with a cooling oil channel of the second tilting pad bearing (7); and a second oil seal (16) and a third oil seal (17) are correspondingly arranged at two ends of the second bearing seat (5) respectively, the rotor assembly (8) is rotatably arranged on the second oil seal (16) and the third oil seal (17), and a gap is reserved between the second tilting pad bearing (7) and the second oil seal (16) and the third oil seal (17) and is communicated with the second oil return hole (15) respectively.
5. A high speed direct drive centrifugal blower as set forth in claim 4 wherein: all be equipped with the laminating on second oil blanket (16) and third oil blanket (17) the labyrinth seal portion of the circumference outer wall of rotor subassembly (8), just the cavity of the labyrinth seal portion of second oil blanket (16), third oil blanket (17) is through the cooling oil cavity intercommunication in corresponding oil return hole and second bearing frame (5) respectively.
6. A high speed direct drive centrifugal blower as set forth in claim 1 wherein: the motor base (1) is provided with a cooling channel (18) communicated with a gap between the motor shell (2) and the stator assembly (3) in the motor shell (2).
7. A high speed direct drive centrifugal blower as set forth in claim 1 wherein: and thrust bearings (19) used for restraining the axial freedom degree of the rotor assembly (8) are respectively arranged on two sides of the second tilting pad bearing (7).
8. A high speed direct drive centrifugal blower as set forth in claim 7 wherein: the second tilting pad bearing (7) is a tilting pad radial thrust composite bearing integrating a tilting pad radial bearing and two-side thrust bearings (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021082832.XU CN212563724U (en) | 2020-06-12 | 2020-06-12 | High-speed direct-drive centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021082832.XU CN212563724U (en) | 2020-06-12 | 2020-06-12 | High-speed direct-drive centrifugal blower |
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| Publication Number | Publication Date |
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| CN212563724U true CN212563724U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021082832.XU Active CN212563724U (en) | 2020-06-12 | 2020-06-12 | High-speed direct-drive centrifugal blower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857047A (en) * | 2022-04-13 | 2022-08-05 | 高杰 | Phase-change cooling type permanent magnet direct-drive air blower |
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2020
- 2020-06-12 CN CN202021082832.XU patent/CN212563724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857047A (en) * | 2022-04-13 | 2022-08-05 | 高杰 | Phase-change cooling type permanent magnet direct-drive air blower |
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