CN113890256A - Motor, pump and household appliance - Google Patents
Motor, pump and household appliance Download PDFInfo
- Publication number
- CN113890256A CN113890256A CN202010637762.8A CN202010637762A CN113890256A CN 113890256 A CN113890256 A CN 113890256A CN 202010637762 A CN202010637762 A CN 202010637762A CN 113890256 A CN113890256 A CN 113890256A
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- China
- Prior art keywords
- rotor
- pump
- force
- motor
- fluid
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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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
An electric machine (10) comprising: a stator (12) comprising a first centre line (A); a rotor shaft (14); a rotor (16) supported by the rotor shaft (14) and rotatable about the rotor shaft (14) relative to the stator (12), including a second centerline (B); and a support mechanism (18) that supports the rotor shaft (14), wherein when the first center line (A) and the second center line (B) coincide, a gap (G) is provided between the support mechanism (18) and the rotor (16). The invention also relates to a pump (50) and a household appliance (100) comprising said motor (10), and to a household appliance (100) comprising said pump (50).
Description
Technical Field
The invention relates to a motor, a pump and a household appliance.
Background
Most of the existing motors have the defect of serious abrasion caused by operation, so that the performance and the service life are influenced, and further, the pump or the household appliances such as a washing machine, a dish washing machine and the like comprising the motors are not ideal enough.
Disclosure of Invention
It is an object of the present invention to provide an improved motor, pump and household appliance.
In view of the above objects, an aspect of an embodiment of the present invention relates to a motor including: a stator including a first centerline; a rotor shaft; a rotor supported by the rotor shaft and rotatable about the rotor shaft relative to the stator, including a second centerline; and a support mechanism that supports the rotor shaft, and when the first center line and the second center line coincide, a gap is provided between the support mechanism and the rotor.
In the running process of the motor, the rotor moves towards the supporting mechanism under the action of external force such as fluid acting force and the like to enter the gap, the first central line deviates from the second central line, the electromagnetic force action of the stator and the rotor generates force which enables the first central line to be superposed with the second central line, and the rotor is enabled to be far away from the supporting mechanism, so that the abrasion between the supporting mechanism and the rotor is light, the service life of the motor is prolonged, and the performance of the motor is improved.
Optionally, the support mechanism comprises a bearing housing, a bearing mounted to the bearing housing, and a spacer located between the bearing and the rotor, the gap being located between the spacer and the rotor.
In the operation process of the motor, the rotor moves towards the gasket under the action of external force such as fluid acting force and the like to enter the gap, the first central line deviates from the second central line, the electromagnetic force action of the stator and the rotor generates force which enables the first central line to coincide with the second central line, so that the rotor is far away from the gasket, the abrasion between the gasket and the rotor is light, the service life of the motor is prolonged, and the performance of the motor is improved.
Optionally, the first centerline and the second centerline extend in a direction perpendicular to the extension direction of the rotor shaft.
In this way, when the first center line is deviated from the second center line, a force generated by the electromagnetic force action of the stator and the rotor to cause the first center line and the second center line to coincide with each other is an axial force.
Another aspect of embodiments of the present invention relates to a pump comprising a motor as described above.
In the operation process of the motor, the rotor moves towards the supporting mechanism under the action of external force such as fluid acting force and the like to enter the gap, the first central line deviates from the second central line, the electromagnetic force action of the stator and the rotor generates force which enables the first central line to coincide with the second central line, and the rotor is far away from the supporting mechanism, so that the abrasion between the supporting mechanism and the rotor is light, the service life of the motor and the pump is prolonged, and the performance of the motor and the pump is improved.
Optionally, the pump includes a wind wheel driven by the motor, and the acting force between the supporting mechanism and the rotor is a difference between an external force applied to the supporting mechanism by the wind wheel and an electromagnetic force between the stator and the rotor.
Thus, the electromagnetic force can reduce and offset the external force, resulting in the acting force being smaller than the external force, even equal to 0, thereby reducing the wear of the motor caused by the external force.
Optionally, when the external force causes the first center line and the second center line to deviate from each other, the electromagnetic force is greater than 0.
Thus, the electromagnetic force can reduce and offset the external force, resulting in the acting force being smaller than the external force, even equal to 0, thereby reducing the wear of the motor caused by the external force.
Optionally, the direction of the external force is parallel to the extension direction of the rotor shaft.
In this way, the external force may cause the rotor to move in a direction parallel to the extension of the rotor shaft and may be reduced, counteracted by a counter force in a direction parallel to the extension of the rotor shaft.
Optionally, a direction of the electromagnetic force is parallel to an extension direction of the rotor shaft.
In this way, the electromagnetic force may cause the rotor to move in a direction parallel to the extension of the rotor shaft and may reduce, counteract, forces directed in opposite directions parallel to the extension of the rotor shaft.
Optionally, the pump comprises a fluid inlet and a fluid outlet in fluid communication with the wind rotor, the external force being derived from fluid flowing from the fluid inlet to the fluid outlet.
In this way, the external force caused by the fluid flowing from the fluid inlet to the fluid outlet can be reduced and counteracted.
Optionally, the fluid inlet and the fluid outlet extend in directions perpendicular to each other.
In this way, the external force caused by the fluid flowing from the fluid inlet to the fluid outlet can be reduced and counteracted. Furthermore, dimensional control of the pump may be facilitated.
Optionally, the rotor shaft extends perpendicular to the direction of extension of the fluid inlet and the fluid outlet.
In this way, the external force caused by the fluid flowing from the fluid inlet to the fluid outlet can be reduced and counteracted. Furthermore, dimensional control of the pump may be facilitated.
Yet another aspect of an embodiment of the present invention relates to a household appliance including the motor as described above.
In the operation process of the motor, the rotor moves towards the supporting mechanism under the action of external force such as fluid acting force and the like to enter the gap, the first central line deviates from the second central line, the electromagnetic force action of the stator and the rotor generates force which enables the first central line to coincide with the second central line, and the rotor is far away from the supporting mechanism, so that the abrasion between the supporting mechanism and the rotor is light, the service life of the motor and the household appliance is prolonged, and the performance of the motor and the household appliance is improved.
Yet another aspect of an embodiment of the invention relates to a household appliance comprising a pump as described above.
In the operation process of the motor, the rotor moves towards the supporting mechanism under the action of external force such as fluid acting force and the like to enter the gap, the first central line deviates from the second central line, the electromagnetic force action of the stator and the rotor generates force which enables the first central line to be coincident with the second central line, and the rotor is far away from the supporting mechanism, so that the abrasion between the supporting mechanism and the rotor is light, the service life of the motor, the pump and the household appliance is prolonged, and the performance of the motor, the pump and the household appliance is improved.
Optionally, the household appliance is a dishwasher or a washing machine.
In the operation process of the motor, the rotor moves towards the supporting mechanism under the action of external force such as fluid acting force and the like to enter the gap, the first central line deviates from the second central line, the stator and the electromagnetic force action of the rotor generate force for enabling the first central line to coincide with the second central line, so that the rotor is far away from the supporting mechanism, the abrasion between the supporting mechanism and the rotor is light, the service life of the motor, the dish washing machine or the washing machine is prolonged, and the performance of the motor, the dish washing machine or the washing machine is improved.
Where the technical conditions warrant, the subject matter of any independent claim herein may be combined with any single subject matter or combination of subject matter recited in any dependent claim to form new claimed subject matter.
The invention will be further described with reference to the accompanying drawings. The same or similar reference numerals may be used to refer to the same or similar elements in different embodiments, and the description of the same or similar elements in different embodiments and the description of prior art elements, features, effects, etc. may be omitted.
Drawings
FIG. 1 is a schematic, partially cross-sectional view of a pump according to an embodiment of the present invention;
FIG. 2 is a schematic partial cross-sectional view of the pump of FIG. 1 in operation; and
fig. 3 is a schematic partial perspective view of a household appliance comprising the pump of fig. 1.
Detailed Description
FIG. 1 is a schematic, partially cross-sectional view of a pump including a motor according to an embodiment of the present invention. As shown in fig. 1, one aspect of an embodiment of the present invention relates to an electric machine 10 including: a stator 12 including a first centerline A; a rotor shaft 14; a rotor 16 supported by the rotor shaft 14 and rotatable about the rotor shaft 14 relative to the stator 12, including a second centerline B; and a support mechanism 18 that supports the rotor shaft 14, wherein when the first center line a and the second center line B coincide, a gap G is provided between the support mechanism 18 and the rotor 16.
Fig. 2 is a schematic partial cross-sectional view of the pump of fig. 1 in operation. Referring to fig. 2, during the operation of the motor 10, the rotor 16 moves toward the supporting mechanism 18 under the action of external force such as fluid acting force, and enters the gap G, the first center line a deviates from the second center line B, and the electromagnetic force of the stator 12 and the rotor 16 acts to generate a force that makes the first center line a coincide with the second center line B, so that the rotor 16 is far away from the supporting mechanism 18, and therefore, the wear between the supporting mechanism 18 and the rotor 16 is light, the service life of the motor 10 is prolonged, and the performance of the motor 10 is improved.
The motor 10 may be used to power a pump or the like, or may be used to power a pump or other device.
The support mechanism 18 may comprise any suitable shape configuration or the like. Optionally, the support mechanism 18 includes a bearing housing 20, a bearing 22 mounted to the bearing housing 20, and a spacer 24 positioned between the bearing 22 and the rotor 16, the gap G being positioned between the spacer 24 and the rotor 16.
In the operation process of the motor 10, the rotor 16 moves towards the gasket 24 under the action of external forces such as fluid acting force and the like to enter the gap G, the first center line a deviates from the second center line B, and the electromagnetic force action of the stator 12 and the rotor 16 generates a force which enables the first center line a to coincide with the second center line B, so that the rotor 16 is far away from the gasket 24, thereby the abrasion between the gasket 24 and the rotor 16 is light, the service life of the motor 10 is prolonged, and the performance of the motor 10 is improved.
The bearing support 20 supports the bearing 22. The rotor shaft 14 passes through the bearing 22 and the rotor 16. The rotor shaft 14 is supported by the bearing 22. The rotor 16 rotates about the rotor shaft 14 relative to the stator 12.
The rotor 16 and the stator 12 may be arranged in any suitable manner. Optionally, the first centerline a and the second centerline B extend in a direction perpendicular to the extension direction of the rotor shaft 14.
In this way, when the first center line a and the second center line B are deviated from each other, the force generated by the electromagnetic force action of the stator 12 and the rotor 16 to overlap the first center line a and the second center line B is an axial force.
Another aspect of an embodiment of the present invention relates to a pump 50 including the motor 10 as described above.
In the operation process of the motor 10, the rotor 16 moves towards the supporting mechanism 18 under the action of external force such as fluid acting force and the like to enter the gap G, the first center line a deviates from the second center line B, and the electromagnetic force action of the stator 12 and the rotor 16 generates a force which enables the first center line a to coincide with the second center line B, so that the rotor 16 is far away from the supporting mechanism 18, thereby the abrasion between the supporting mechanism 18 and the rotor 16 is light, the service life of the motor 10 and the pump 50 is prolonged, and the performance of the motor 10 and the pump 50 is improved.
The pump 50 may be used to treat a fluid, but may be used for any other suitable purpose. The pump 50 may be used in household appliances such as dishwashers, washing machines, etc., as well as in other applications.
The pump 50 may comprise any suitable shape configuration, and the like. Optionally, the pump 50 includes a wind wheel 52 driven by the motor 10, and the force F between the support mechanism 18 and the rotor 16 is the difference between an external force F1 applied to the support mechanism 18 by the wind wheel 52 and an electromagnetic force F2 applied between the stator 12 and the rotor 14.
In this way, the electromagnetic force F2 can reduce and counteract the external force F1, resulting in the acting force F being smaller than the external force F1 and even equal to 0, thereby reducing the wear of the motor 10 caused by the external force F1.
The rotor shaft 14 can be combined with the wind wheel 52 to drive the wind wheel 52 to move and rotate. The wind wheel 52 may be a fluid driven mechanism such as an impeller. The wind rotor 52 is operable to generate the external force F1 acting on the support mechanism 18.
Alternatively, when the external force F1 causes the first center line a and the second center line B to deviate from each other, the electromagnetic force F2 is greater than 0.
In this way, the electromagnetic force F2 can reduce and counteract the external force F1, resulting in the acting force F being smaller than the external force F1 and even equal to 0, thereby reducing the wear of the motor 10 caused by the external force F1.
Optionally, the direction of the external force F1 is parallel to the extending direction of the rotor shaft 14.
In this manner, the external force F1 may cause the rotor 16 to move in a direction parallel to the extension of the rotor shaft 14, and may be reduced and cancelled by an opposing force in the direction parallel to the extension of the rotor shaft 14.
As shown by the arrow in fig. 2, the direction of the external force F1 may be a direction from the rotor 14 to the support mechanism 18 and the wind wheel 52.
Optionally, the direction of the electromagnetic force F2 is parallel to the extension direction of the rotor shaft 14.
In this manner, the electromagnetic force F2 may cause the rotor 16 to move in a direction parallel to the extension of the rotor shaft 14 and may reduce and counteract a counter force in the direction parallel to the extension of the rotor shaft 14.
As shown by the arrow direction in fig. 2, the direction of the electromagnetic force F2 may be a direction from the wind wheel 52 to the support mechanism 18 and the rotor 14. The direction of the electromagnetic force F2 may be different and opposite to the direction of the external force F1.
Optionally, the pump 50 includes a fluid inlet 54 and a fluid outlet 56 in fluid communication with the wind rotor 52, the external force F1 being derived from the fluid 58 flowing from the fluid inlet 54 to the fluid outlet 56. In this manner, the external force F1 caused by the fluid 58 flowing from the fluid inlet 54 to the fluid outlet 56 may be reduced and counteracted. The fluid 58 may be a liquid, such as water or an aqueous solution.
The wind rotor 52 may facilitate the flow of the fluid 58 from the fluid inlet 54 to the fluid outlet 56, and the fluid 58 may exert a force on the wind rotor 52 that induces the external force F1.
Optionally, the fluid inlet 54 and the fluid outlet 56 extend in directions perpendicular to each other.
In this manner, the external force F1 caused by the fluid 58 flowing from the fluid inlet 54 to the fluid outlet 56 may be reduced and counteracted. Also, the size control of the pump 50 may be facilitated.
Alternatively, the rotor shaft 14 and the fluid inlet 54 and the fluid outlet 56 extend in a direction perpendicular to each other.
In this manner, the external force F1 caused by the fluid 58 flowing from the fluid inlet 54 to the fluid outlet 56 may be reduced and counteracted. Also, the size control of the pump 50 may be facilitated.
Yet another aspect of an embodiment of the present invention relates to a household appliance 100 comprising an electric motor 10 as described above.
In the operation process of the motor 10, the rotor 16 moves towards the supporting mechanism 18 under the action of external force such as fluid acting force and the like to enter the gap G, the first center line a deviates from the second center line B, and the electromagnetic force action of the stator 12 and the rotor 16 generates a force which enables the first center line a to coincide with the second center line B, so that the rotor 16 is far away from the supporting mechanism 18, the abrasion between the supporting mechanism 18 and the rotor 16 is light, the service life of the motor 10 and the household appliance 100 is prolonged, and the performance of the motor 10 and the household appliance 100 is improved.
Yet another aspect of embodiments of the present invention relates to a household appliance 100 comprising a pump 50 as described above.
In the operation process of the motor 10, the rotor 16 moves towards the supporting mechanism 18 under the action of external force such as fluid acting force and the like to enter the gap G, the first center line a deviates from the second center line B, and the electromagnetic force action of the stator 12 and the rotor 16 generates a force which enables the first center line a to coincide with the second center line B, so that the rotor 16 is far away from the supporting mechanism 18, the abrasion between the supporting mechanism 18 and the rotor 16 is light, the service life of the motor 10, the pump 50 and the household appliance 100 is prolonged, and the performance of the motor 10, the pump 50 and the household appliance 100 is improved.
Optionally, the household appliance 100 is a dishwasher or a washing machine.
In the operation process of the motor 10, the rotor 16 moves towards the supporting mechanism 18 under the action of external force such as fluid acting force and the like to enter the gap G, the first central line a deviates from the second central line B, and the electromagnetic force action of the stator 12 and the rotor 16 generates a force which enables the first central line a to coincide with the second central line B, so that the rotor 16 is far away from the supporting mechanism 18, the abrasion between the supporting mechanism 18 and the rotor 16 is light, the service life of the motor 10, the dish washing machine or the washing machine is prolonged, and the performance of the motor 10, the dish washing machine or the washing machine is improved.
Fig. 3 is a schematic partial perspective view of a household appliance comprising the pump of fig. 1. Referring to fig. 3, the household appliance 100 may include a cavity 102, a base 104 supporting the cavity 102, and a slot 106 installed in the cavity 102. The chamber 102 may receive items (not shown) to be washed.
The pump 50 may be a drainage pump of the household appliance 100, is installed in the tank 106, and discharges the fluid washed in the cavity 102 to the outlet 110 of the tank 106 through the inlet 108 of the tank 106, and then discharges the fluid out of the household appliance 100.
The various embodiments described above and shown in the drawings are illustrative of the invention and are not exhaustive of the invention. Any modification of the present invention by a person of ordinary skill in the related art within the scope of the basic technical idea of the present invention is within the scope of the present invention.
Claims (14)
1. An electric machine (10), comprising:
a stator (12) comprising a first centre line (A);
a rotor shaft (14);
a rotor (16) supported by the rotor shaft (14) and rotatable about the rotor shaft (14) relative to the stator (12), including a second centerline (B); and
and a support mechanism (18) that supports the rotor shaft (14), wherein a gap (G) is provided between the support mechanism (18) and the rotor (16) when the first center line (A) and the second center line (B) coincide with each other.
2. The electric machine (10) of claim 1, wherein the support mechanism (18) comprises a bearing housing (20), a bearing (22) mounted to the bearing housing (20), and a spacer (24) positioned between the bearing (22) and the rotor (16), the gap (G) being positioned between the spacer (24) and the rotor (16).
3. The electrical machine (10) of claim 1, wherein the first centerline (a) and the second centerline (B) extend perpendicular to the direction of extension of the rotor shaft (14).
4. A pump (50) characterized by comprising an electric motor (10) according to any one of claims 1-3.
5. Pump (50) according to claim 4, characterized in that it comprises a wind rotor (52) driven by the electric motor (10), the force (F) between the support means (18) and the rotor (16) being the difference between the external force (F1) of the wind rotor (52) acting on the support means (18) and the electromagnetic force (F2) between the stator (12) and the rotor (14).
6. The pump (50) of claim 5, wherein the electromagnetic force (F2) is greater than 0 when the external force (F1) causes the first centerline (A) and the second centerline (B) to deviate from each other.
7. Pump (50) according to claim 5, characterized in that the direction of the external force (F1) is parallel to the direction of extension of the rotor shaft (14).
8. Pump (50) according to claim 5, characterized in that the direction of the electromagnetic force (F2) is parallel to the direction of extension of the rotor shaft (14).
9. The pump (50) of claim 5, including a fluid inlet (54) and a fluid outlet (56) in fluid communication with the rotor (52), the external force (F1) being derived from fluid (58) flowing from the fluid inlet (54) to the fluid outlet (56).
10. The pump (50) of claim 9, wherein the fluid inlet (54) and the fluid outlet (56) extend in directions perpendicular to each other.
11. Pump (50) according to claim 9, characterized in that the rotor shaft (14) extends perpendicular to the fluid inlet (54) and the fluid outlet (56).
12. A household appliance (100) comprising an electric machine (10) according to any one of claims 1-3.
13. A household appliance (100) comprising a pump (50) according to any one of claims 4 to 11.
14. A household appliance (100) as in claim 12 or 13, characterized by being a dishwasher or a washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010637762.8A CN113890256A (en) | 2020-07-02 | 2020-07-02 | Motor, pump and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010637762.8A CN113890256A (en) | 2020-07-02 | 2020-07-02 | Motor, pump and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113890256A true CN113890256A (en) | 2022-01-04 |
Family
ID=79013358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010637762.8A Pending CN113890256A (en) | 2020-07-02 | 2020-07-02 | Motor, pump and household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113890256A (en) |
-
2020
- 2020-07-02 CN CN202010637762.8A patent/CN113890256A/en active Pending
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