CN115189506A - Self-circulation cooling magnetic suspension high-speed motor with intercooler - Google Patents
Self-circulation cooling magnetic suspension high-speed motor with intercooler Download PDFInfo
- Publication number
- CN115189506A CN115189506A CN202210497110.8A CN202210497110A CN115189506A CN 115189506 A CN115189506 A CN 115189506A CN 202210497110 A CN202210497110 A CN 202210497110A CN 115189506 A CN115189506 A CN 115189506A
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- China
- Prior art keywords
- motor
- magnetic suspension
- intercooler
- air
- cooling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Abstract
The application relates to the technical field of magnetic suspension motors, in particular to a self-circulation cooling magnetic suspension high-speed motor with an intercooler. The motor comprises a motor body, an intercooler and a tail end impeller; the motor body comprises a rotor assembly, and a motor stator is arranged on the outer side of the rotor assembly; the two ends of the rotor component are provided with magnetic bearing rotors, the outer sides of the rotor components are provided with magnetic bearing stators and magnetic bearing shells, and the protective bearings and displacement sensor components are arranged in the magnetic bearing shells; an air passage is reserved at the upper part of the motor shell; intercooler one side and the air outlet of motor casing of motor bottom link to each other, and the opposite side links to each other with the entry of tail end impeller. When the magnetic suspension high-speed motor works, the tail end impeller is driven to extract heat inside the motor from the air outlet of the shell, the motor body is cooled by the intercooler, the motor body is introduced into the impeller cover, heat is dissipated inside the motor body without the help of environment cooling air and an external fan, the reliability and the protection grade of the product are improved, and the application in the industrial fields of dust prevention, corrosion prevention and the like is met.
Description
Technical Field
The application relates to the technical field of magnetic suspension motors, in particular to a self-circulation cooling magnetic suspension high-speed motor with an intercooler.
Background
In normal operation of the magnetic suspension high-speed motor, electromagnetic loss and high-speed wind resistance loss can generate a large amount of heat, the internal temperature of the motor body is too high, the excessive temperature can possibly cause demagnetization of a permanent magnet, the insulation failure of the motor stator and the end part of the magnetic bearing stator winding is caused, and the damage of a displacement sensor in the motor causes the control failure problem of a magnetic suspension bearing. Reliable heat dissipation of the motor plays a crucial role in stable operation.
The Chinese invention patent application (publication No. CN209283026U, published: 2019.08.20) discloses a magnetic suspension high-speed permanent magnet motor with an air-water cooling structure, which comprises a motor body and a cooler on the top of the motor body. This application accomplishes the inside cooling of motor through the cooling core and the fan at motor top, and many cooling wind paths of motor inside parallel connection reduce the pressure drop of forced air cooling in-process, improve the protection level of motor.
The prior art has the following defects: the fan is used as a self-circulation cooling power part in the motor, and the fan has certain loss in daily use, so that the heat dissipation reliability of the motor is reduced; the low-pressure fan is utilized for cooling circulation, eddy current loss between the stator and the rotor of the motor cannot be taken away to generate heat, the possibility of overhigh temperature of the rotor of the motor can exist, and the permanent magnet is further demagnetized.
Disclosure of Invention
In view of the above, the present invention provides a self-circulation cooling magnetic suspension high-speed motor with an intercooler.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a self-circulation cooling magnetic suspension high-speed motor with an intercooler comprises a motor body, the intercooler at the bottom of the motor and a heat dissipation impeller at the end part of the intercooler; the motor body comprises an internal component and a motor shell; the internal component comprises a rotor component positioned in the center, and a motor stator and a motor winding are arranged on the outer side of the rotor component; magnetic suspension bearing rotors are mounted at two ends of the rotor assembly, magnetic suspension bearing stators, magnetic suspension bearing windings and magnetic suspension bearing shells are arranged on the outer sides of the magnetic suspension bearing rotors, and protective bearings and displacement sensors are mounted inside the magnetic suspension bearing shells; an air passage is reserved at the top of the motor shell;
a cooling pipeline and a guide cover are arranged in the intercooler, one side of the intercooler is communicated with an air outlet of the motor body through the guide cover, and the other side of the intercooler is communicated with an inlet of the impeller cover;
the heat dissipation impeller comprises an impeller cover and an impeller, the impeller is connected with a rotor assembly of the motor body through a pull rod, and cooling air is introduced into the motor body through the impeller cover by the high-speed rotation of the rotor assembly;
this internal a plurality of cooling wind paths that are equipped with of motor, wherein:
at least one cooling air path sequentially passes through the end part of the motor winding at the air inlet side, the gap between the rotor assembly and the motor stator and the end part of the motor winding at the air outlet side;
at least one cooling air path passes through the air inlet in sequence and then passes through the magnetic suspension bearing stator and the displacement sensor;
at least one cooling air path sequentially passes through the air inlet and the air passing channel of the motor shell and then passes through the magnetic suspension bearing stator and the displacement sensor;
furthermore, the motor shell is provided with hoisting holes.
Further, a top thread hole is reserved at the top of the motor shell.
Furthermore, the rear magnetic suspension bearing shell is provided with an air inlet channel which is arc-shaped.
Furthermore, the displacement sensor comprises an axial displacement sensor and a radial displacement sensor which adopt the same support, and the support is provided with an air passage which is arc-shaped.
Furthermore, the intercooler adopts detachable cooling pipeline.
Furthermore, a drainage groove is arranged in the air guide sleeve.
Compared with the prior art, the invention has the following advantages:
according to the magnetic suspension motor, the plurality of air paths are arranged to respectively radiate heat of each part of the internal components of the motor body, the rotor assembly rotates at a high speed through the radiating impeller, cooling air passing through the intercooler is introduced into the motor body through the impeller cover, the heat radiation of the internal part of the motor body is not carried out by an external axial flow fan or a centrifugal fan, hot air in the motor is cooled by the intercooler, the protection grade of the motor is improved, the reliability of the magnetic suspension motor is improved, and meanwhile, the radiating efficiency is improved by the high-speed radiating impeller.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.
FIG. 1 is a sectional view of the structure of the present invention;
FIG. 2 is a schematic view of the impeller of the present invention;
FIG. 3 is a schematic view of the structure of the wind passage of the motor housing according to the present invention;
FIG. 4 is a schematic structural diagram of a rear magnetic bearing housing according to the invention;
FIG. 5 is a schematic structural diagram of the displacement sensor assembly according to the present invention;
FIG. 6 is a schematic view of an intercooler constructed in accordance with the present invention
Description of the reference numerals
1-hoop; 2-an impeller cover; 3-an impeller; 31-long leaf; 32-short leaf; 4-protecting the bearing; 5-a displacement sensor assembly; 6-rear magnetic suspension bearing shell; 7-air inlet of the rear magnetic suspension bearing shell; 8-magnetic bearing windings; 9-motor housing; 10-a gap at the motor winding at the air inlet side; 11-motor shell jackscrew hole; 12-a motor winding; 13-motor casing air passage; 14-a motor stator; 15-a gap at the motor winding at the air outlet side; 16-a magnetic bearing stator; 17-front magnetic suspension bearing shell; 18-a magnetic bearing rotor; 19-a rotor assembly; 20-shell air outlet; 21-the gap between the rotor assembly and the motor stator; 22-cooling line; 23-a flow guide cover; 24-connecting the pipeline.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", and the like refer to orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description or for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.
In the description of the invention it is noted that the term "exemplary" means "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The term "connected" is to be understood in a broad sense and may be a fixed connection, a releasable connection, or an integral connection. The specific meaning of the above terms in the creation of the present invention can be understood by those skilled in the art through specific situations.
The invention is described in detail below with reference to examples.
A self-circulation cooling magnetic suspension high-speed motor with an intercooler is shown in figures 1 to 5 and comprises a motor body, the intercooler at the bottom of the motor and a heat dissipation impeller at the end of the intercooler. The motor body comprises an internal component and a motor shell 9; the internal components comprise a rotor component 19 positioned in the center, and a motor stator 14 and a motor winding 13 are arranged on the outer side of the rotor component; magnetic suspension bearing rotors 18 are arranged at two ends of the rotor assembly, magnetic suspension bearing stators 16, magnetic suspension bearing windings 8 and magnetic suspension bearing shells 17 are arranged on the outer sides of the magnetic suspension bearing rotors, and protective bearings 4 and displacement sensor assemblies 5 are arranged in the magnetic suspension bearing shells.
An air passage 13 is reserved at the top of the motor shell, so that cooling air entering the motor body through the impeller at the tail end can conveniently reach a gap 15 at the motor winding at the air outlet side of the motor to dissipate heat of the motor winding at the air outlet side, the magnetic suspension bearing winding and the sensor assembly.
In an alternative embodiment, the overfire air duct at the top of the motor housing can be realized by a cast housing, which has the advantages of low cost and short machining period compared with a forged housing.
The heat dissipation impeller comprises an impeller cover 2 and an impeller 3, the impeller 3 is connected with a rotor assembly of the motor body through a pull rod, and cooling air is introduced into the motor body through the impeller cover 2 by high-speed rotation of the rotor assembly.
The motor body in have a plurality of cooling air paths, wherein:
at least one cooling air path sequentially passes through the air inlet 7, the motor winding end part 10 on the air inlet side, a gap 21 between the rotor assembly and the motor stator, the motor winding end part 15 on the air outlet side and the motor air outlet 20;
at least one cooling air path passes through the air inlet 7 in sequence, passes through the end part 10 of the motor winding at the air inlet side, passes through the magnetic suspension bearing stator 16 and passes through the displacement sensor assembly 5;
at least one cooling air passage passes through the air inlet 7 in sequence, passes through the motor shell air passing passage 13, passes through the magnetic suspension bearing stator 16 and passes through the displacement sensor assembly 5;
it should be noted that, the above-mentioned many wind paths of arranging dispel the heat everywhere to motor body internal component respectively, rely on the heat dissipation impeller, through the high-speed rotation of rotor subassembly, introduce the cooling air inside motor body through the impeller lid, do not dispel the heat to motor body this part with the help of outside axial fan or centrifugal fan, improved magnetic suspension motor's reliability, utilize high-speed heat dissipation impeller simultaneously, improve the radiating efficiency.
In addition, the cooling air path passes through the magnetic suspension bearing stator and can use the internal gap of the magnetic bearing stator to pass through the air, and a structural member can be designed at a proper position to guide the cooling air so as to finish the heat dissipation of the magnetic bearing winding, and the heat dissipation is not particularly limited.
The motor shell is provided with hoisting holes, so that the product can be hoisted conveniently.
Motor casing bottom be equipped with jackscrew hole 11, be convenient for adjust the cross-sectional area of motor casing air passing channel, according to the temperature signal of air outlet side temperature sensor feedback, adjust the cooling air passing volume of motor casing air passing channel for this internal air outlet side of motor can reach the same cooling effect of air inlet side.
And an air inlet is formed in the rear magnetic suspension bearing shell 6, and the air inlet is in an arc shape, so that cooling air with certain pressure at the impeller can conveniently enter the motor body.
The displacement sensor assembly 5 is provided with an air passage, the air passage is arc-shaped, and the axial displacement sensor and the radial displacement sensor are arranged on the same support, so that a cooling air path can conveniently penetrate through the axial displacement sensor and the radial displacement sensor.
The impeller 3 is matched with the rotor component 1 through a pull rod, and three-dimensional flow centrifugal long blades 31 and short blades 32 are uniformly distributed.
In operation, impeller 3 passes through the high-speed rotation of the drive of 1 piece of rotor assembly, and the exit pressure of impeller needs to be confirmed according to the rotational speed of rotor subassembly, and along with the rotor subassembly rotational speed improves, heat dissipation impeller exit pressure and flow improve, strengthen the inside radiating effect of motor body.
Generally, as the rotating speed of the magnetic suspension motor is increased, the power is increased, the heat productivity is increased, and the heat dissipation efficiency of the heat dissipation impeller is also increased in proportion to the rotating speed. By adopting the cooling scheme of the heat dissipation impeller, a matched cooling fan of the magnetic suspension motor can be omitted, so that the purchasing cost of purchasing a high-pressure cooling fan in a matched manner is reduced, and the reliability of a magnetic suspension motor product is improved.
Through reasonable air cooling structural design, the safe and stable operation of the motor is guaranteed, the motor winding, the magnetic suspension bearing winding and the motor rotor assembly can be effectively radiated, and the reliability of the motor is guaranteed.
Claims (9)
1. A self-circulation cooling magnetic suspension high-speed motor with an intercooler comprises a motor body, the intercooler at the bottom of the motor and an end impeller at the tail end of the intercooler; the motor body comprises an internal assembly and a motor shell; the internal component comprises a rotor component positioned in the center, and a motor stator and a motor winding are arranged on the outer side of the rotor component; magnetic suspension bearing rotors are mounted at two ends of the rotor assembly, magnetic suspension bearing stators, magnetic suspension bearing windings and magnetic suspension bearing shells are arranged on the outer sides of the magnetic suspension bearing rotors, and protective bearings and displacement sensors are mounted inside the magnetic suspension bearing shells; an air passage is reserved at the top of the motor shell;
the intercooler is internally provided with a cooling pipeline and a flow guide cover, one side of the flow guide cover is communicated with the air outlet of the motor body, and the other side of the flow guide cover is communicated with the inlet of the impeller cover.
The heat dissipation impeller comprises an impeller cover and an impeller, the impeller is connected with a rotor assembly of the motor body through a pull rod, and cooling air is introduced into the motor body through the impeller cover by the high-speed rotation of the rotor assembly;
this internal a plurality of cooling wind paths that are equipped with of motor, wherein:
at least one cooling air path sequentially passes through the end part of the motor winding at the air inlet side, the gap between the rotor assembly and the motor stator and the end part of the motor winding at the air outlet side;
at least one cooling air path passes through the air inlet in sequence and then passes through the magnetic suspension bearing stator and the displacement sensor;
at least one cooling air path passes through the air inlet and the air passing channel of the motor shell in sequence and then passes through the magnetic suspension bearing stator and the displacement sensor.
2. The self-circulation cooling magnetic suspension high-speed motor with the intercooler as recited in claim 1, wherein: the top of the motor shell is provided with a wind passing channel with a circular section.
3. The self-circulation cooling magnetic suspension high-speed motor with the intercooler as claimed in claim 1, wherein: and hoisting holes are formed in the motor shell.
4. The self-circulation cooling magnetic suspension high-speed motor with the intercooler as claimed in claim 1, wherein: the top of the motor shell is provided with a jackscrew hole for adjusting the ventilation volume of the air passage.
5. The self-circulation cooling magnetic suspension high-speed motor with the intercooler as recited in claim 1, wherein: the section of an air inlet channel of the rear magnetic suspension bearing shell is arc-shaped.
6. The self-circulation cooling magnetic suspension high-speed motor with the intercooler as claimed in claim 1, wherein: the displacement sensor comprises an axial displacement sensor and a radial displacement sensor which share a support, and an air passing channel on the support is in an arc shape.
7. The self-circulation cooling magnetic suspension high-speed motor with the intercooler as claimed in claim 1, wherein: the intercooler adopts the cooling tube way of dismantling, and the cooling tube way is fixed in the kuppe.
8. The self-circulation cooling magnetic suspension high-speed motor with the intercooler as recited in claim 7, wherein: a drainage groove is arranged in the air guide sleeve.
9. A self-circulation cooling magnetic suspension high-speed motor with an intercooler comprises a motor body, the intercooler at the bottom of the motor and a radiating impeller at the end part of the intercooler; the motor body comprises an internal assembly and a motor shell; the inner component comprises a rotor component positioned in the center, and a motor stator and a motor winding are arranged on the outer side of the rotor component; magnetic suspension bearing rotors are mounted at two ends of the rotor assembly, magnetic suspension bearing stators, magnetic suspension bearing windings and magnetic suspension bearing shells are arranged on the outer sides of the magnetic suspension bearing rotors, and protective bearings and displacement sensors are mounted inside the magnetic suspension bearing shells; the wind-passing generator is characterized in that a wind-passing channel is reserved at the top of the motor shell; arranging cooling air paths which sequentially pass through the end part of the motor winding at the air inlet side, a gap between the rotor assembly and the motor stator and the end part of the motor winding at the air outlet side; the cooling air path passes through the magnetic bearing stator and the displacement sensor after passing through the air inlet; a cooling air path which passes through the air inlet and the air passing channel of the motor shell in sequence and then passes through the magnetic suspension bearing stator and the displacement sensor is arranged; the air passages are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497110.8A CN115189506A (en) | 2022-05-09 | 2022-05-09 | Self-circulation cooling magnetic suspension high-speed motor with intercooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497110.8A CN115189506A (en) | 2022-05-09 | 2022-05-09 | Self-circulation cooling magnetic suspension high-speed motor with intercooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115189506A true CN115189506A (en) | 2022-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210497110.8A Withdrawn CN115189506A (en) | 2022-05-09 | 2022-05-09 | Self-circulation cooling magnetic suspension high-speed motor with intercooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115189506A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116633081A (en) * | 2023-06-02 | 2023-08-22 | 山东华东风机有限公司 | Magnetic suspension high-speed blower with rotor spindle heat dissipation air duct |
-
2022
- 2022-05-09 CN CN202210497110.8A patent/CN115189506A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116633081A (en) * | 2023-06-02 | 2023-08-22 | 山东华东风机有限公司 | Magnetic suspension high-speed blower with rotor spindle heat dissipation air duct |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221014 |
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| WW01 | Invention patent application withdrawn after publication |