CN102280964A - Motor with low mechanical loss - Google Patents
Motor with low mechanical loss Download PDFInfo
- Publication number
- CN102280964A CN102280964A CN2011102568449A CN201110256844A CN102280964A CN 102280964 A CN102280964 A CN 102280964A CN 2011102568449 A CN2011102568449 A CN 2011102568449A CN 201110256844 A CN201110256844 A CN 201110256844A CN 102280964 A CN102280964 A CN 102280964A
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- Prior art keywords
- rotating shaft
- end cap
- motor
- rear end
- fan blade
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Abstract
The invention discloses a motor with low mechanical loss, relates to the technical field of motors, and aims to solve the technical problem of high mechanical loss. The motor comprises a shell, and a stator and a rotor which are arranged in the shell, wherein the front and back ends of the shell are sealed by end covers; the rotor is coaxially fixed on a rotating shaft; the two ends of the rotating shaft are arranged on the end covers at the front and back ends of the shell through bearings; and a fan blade is coaxially and fixedly arranged at the back end of the rotating shaft and is positioned in the back of a back end cover. The motor is characterized in that: the back end cover is provided with a circular groove which circles the rotating shaft; the circular groove is coaxial with the rotating shaft and is open backwards unidirectionally; the fan blade is provided with a circular flange which circles the rotating shaft and protrudes forwards; and the circular flange is coaxial with the rotating shaft and stretches into the circular groove on the back end cover in a movable connection mode. The motor has low mechanical loss and high efficiency.
Description
Technical field
The present invention relates to motor technology, particularly relate to the technology of the low motor of a kind of mechanical loss.
Background technology
Motor is a kind of equipment that electric energy is converted to mechanical energy, absorbs electrical power from electric system during operation, to the mechanical system output mechanical power.The operating efficiency of motor is higher, does not have flue dust, smell again, and is free from environmental pollution, and noise is also less, obtained extensive use in each side such as industrial and agricultural production, communications and transportation, national defence, commerce and household electrical appliance, medical appliance equipments.
Improving motor efficiency is the important topic that motor manufacturer will face, and the factor that influences motor efficiency mainly is made up of core loss, copper (stator and rotor winding) loss, mechanical loss and stray loss.Mechanical loss wherein is mainly by the wind moussing loss of bearing friction loss, bearing grease resistance loss, fan, and the outside framework oil seal and the rotating shaft frictional dissipation that are contained on the end cap are formed.
As shown in Figure 2, existing motor is mainly by casing 1 ', and the stator, the rotor that are installed in respectively in the casing 1 ' are formed, each is sealed the rear and front end of its casing 1 ' by end cap 2 ', its rotor is fixed in the rotating shaft 3 ', the two ends of rotating shaft 3 ' each through Bearing Installation on the end cap 2 ' of casing 1 ' rear and front end, the rear end of rotating shaft 3 ' is provided with fan blade 4 '.Be equipped with the outside framework oil seal 6 ' of annular on the front and rear cover 2 ' of existing motor, the inner ring of each outside framework oil seal 6 ' props up the side face of rotating shaft 3 ', to prevent that lubricating oil or water from entering casing 1 ' inner chamber from rear end cap 2 ' and rotating shaft 3 ' junction surface, but when rotating shaft 3 ' is rotated, can produce frictional force radially between the inner ring of outside framework oil seal 6 ' and the side face of rotating shaft 3 ', thereby generation mechanical loss, the power consumption of this frictional force and the rotating speed of rotating shaft 3 ', contact area is directly proportional, can reduce the efficient of motor, particularly influence bigger two utmost points and the thicker motor of the rotating shaft diameter of axle.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention provides a kind of efficient height, and the low motor of mechanical loss.
In order to solve the problems of the technologies described above, the low motor of a kind of mechanical loss provided by the present invention, comprise casing, reach the stator, the rotor that are installed in respectively in the casing, the rear and front end of described casing each by end cap sealing, described rotor coaxial is fixed in the rotating shaft, the two ends of this rotating shaft each through Bearing Installation on the end cap of casing rear and front end, and the coaxial fan blade that is fixed with in its rear end, this fan blade is positioned at the rear of rear end cap;
It is characterized in that: described rear end cap is provided with the toroidal cavity of a circle around the shaft, and this toroidal cavity is coaxial and unidirectionally open backward with rotating shaft;
Described fan blade is provided with a circle and the annular flange protruded forward around the shaft, and this annular flange is coaxial with rotating shaft, and stretches in the toroidal cavity on the rear end cap, and does not contact mutually with rear end cap.
Further, the rear end of described casing is installed with a fan housing in fan blade and rear end cap all covered at.
The motor that mechanical loss provided by the invention is low, by cooperating of the annular flange on the toroidal cavity on the rear end cap and the fan blade, reach and prevent that lubricating oil or water from entering the purpose of chassis cavity from rear end cap and rotating shaft junction surface, thereby save the outside framework oil seal of being habitually practised on the conventional motors rear end cap, and the annular flange on the fan blade does not contact mutually with rear end cap, thereby effectively reduce the mechanical loss of motor, and then improved the efficient of motor.
Description of drawings
Fig. 1 is that cut away view is looked on the left side, rear portion of the low motor of the mechanical loss of the embodiment of the invention;
Fig. 2 is that cut away view is looked on the left side, rear portion of existing motor.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As shown in Figure 1, the low motor of a kind of mechanical loss that the embodiment of the invention provided, comprise casing 1, reach the stator, the rotor that are installed in respectively in the casing 1, each is sealed the rear and front end of described casing 1 by an end cap 2, described rotor coaxial is fixed in the rotating shaft 3, the two ends of this rotating shaft 3 each through Bearing Installation on the end cap 2 of casing 1 rear and front end, and the coaxial fan blade 4 that is fixed with in its rear end, this fan blade 4 is positioned at the rear of rear end cap 2, and the rear end of described casing 1 is installed with a fan housing 5 in fan blade 4 and rear end cap 2 all covered at;
It is characterized in that: described rear end cap 2 is provided with the toroidal cavities of 3 one circles around the shaft, and this toroidal cavity and rotating shaft 3 are coaxial and unidirectionally open backward;
Described fan blade 4 is provided with 3 one circles and the annular flange 41 protruded forward around the shaft, and this annular flange 41 is coaxial with rotating shaft 3, and stretches in the toroidal cavity on the rear end cap 2, and does not contact mutually with rear end cap 2.
The principle that the embodiment of the invention reduces mechanical loss is as follows:
When rotating shaft is rotated, rotating shaft only connects rear end cap by bearing, and the annular flange on the fan blade does not contact mutually with rear end cap, reduced the mechanical loss that outside framework oil seal brought of conventional motors, can improve the efficient of motor, toroidal cavity and the annular flange on the fan blade on the rear end cap constitute a maze-type structure, thereby prevent that effectively lubricating oil or water from entering chassis cavity from rear end cap and rotating shaft junction surface, even if there is big water gaging to be sprayed onto the motor rear portion, at fan housing, under the block resistance of fan blade and maze-type structure, can effectively avoid water to enter chassis cavity, its waterproof effect can reach the degree of protection of IP55 after tested.
Claims (2)
1. motor that mechanical loss is low, comprise casing, reach the stator, the rotor that are installed in respectively in the casing, each is sealed the rear and front end of described casing by an end cap, described rotor coaxial is fixed in the rotating shaft, the two ends of this rotating shaft each through Bearing Installation on the end cap of casing rear and front end, and the coaxial fan blade that is fixed with in its rear end, this fan blade is positioned at the rear of rear end cap;
It is characterized in that: described rear end cap is provided with the toroidal cavity of a circle around the shaft, and this toroidal cavity is coaxial and unidirectionally open backward with rotating shaft;
Described fan blade is provided with a circle and the annular flange protruded forward around the shaft, and this annular flange is coaxial with rotating shaft, and stretches in the toroidal cavity on the rear end cap, and does not contact mutually with rear end cap.
2. motor according to claim 1 is characterized in that: the rear end of described casing is installed with a fan housing in fan blade and rear end cap all covered at.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102568449A CN102280964A (en) | 2011-09-01 | 2011-09-01 | Motor with low mechanical loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102568449A CN102280964A (en) | 2011-09-01 | 2011-09-01 | Motor with low mechanical loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102280964A true CN102280964A (en) | 2011-12-14 |
Family
ID=45106197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102568449A Pending CN102280964A (en) | 2011-09-01 | 2011-09-01 | Motor with low mechanical loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102280964A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611238A (en) * | 2012-03-26 | 2012-07-25 | 吴江天龙电子机械设备有限公司 | Dynamic sealing structure for rotating shaft of submersible motor |
| WO2013143315A1 (en) * | 2012-03-26 | 2013-10-03 | 吴江天龙电子机械设备有限公司 | Rotating shaft dynamic seal structure of submersible motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182242A (en) * | 1994-12-27 | 1996-07-12 | Kosoku Denki Kk | Dustproof structure of bearing for motor |
| CN2713718Y (en) * | 2004-07-16 | 2005-07-27 | 长春诺森电机有限公司 | High protection grade low noise electric motor with cup type base |
| CN1836360A (en) * | 2003-09-10 | 2006-09-20 | 株式会社安川电机 | Bearing section waterproof structure of vertical motor |
| CN101505073A (en) * | 2008-02-05 | 2009-08-12 | 台达电子工业股份有限公司 | Fan and motor capable of preventing foreign matter and moisture instrusion |
| CN202206232U (en) * | 2011-09-01 | 2012-04-25 | 上海特波电机有限公司 | Motor with low mechanical loss |
-
2011
- 2011-09-01 CN CN2011102568449A patent/CN102280964A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182242A (en) * | 1994-12-27 | 1996-07-12 | Kosoku Denki Kk | Dustproof structure of bearing for motor |
| CN1836360A (en) * | 2003-09-10 | 2006-09-20 | 株式会社安川电机 | Bearing section waterproof structure of vertical motor |
| CN2713718Y (en) * | 2004-07-16 | 2005-07-27 | 长春诺森电机有限公司 | High protection grade low noise electric motor with cup type base |
| CN101505073A (en) * | 2008-02-05 | 2009-08-12 | 台达电子工业股份有限公司 | Fan and motor capable of preventing foreign matter and moisture instrusion |
| CN202206232U (en) * | 2011-09-01 | 2012-04-25 | 上海特波电机有限公司 | Motor with low mechanical loss |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611238A (en) * | 2012-03-26 | 2012-07-25 | 吴江天龙电子机械设备有限公司 | Dynamic sealing structure for rotating shaft of submersible motor |
| WO2013143315A1 (en) * | 2012-03-26 | 2013-10-03 | 吴江天龙电子机械设备有限公司 | Rotating shaft dynamic seal structure of submersible motor |
| CN102611238B (en) * | 2012-03-26 | 2015-08-19 | 吴江天龙电子机械设备有限公司 | The rotating shaft movable sealing structure of submersible motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111214 |