CN104242534B - A kind of soaking type brshless DC motor - Google Patents
A kind of soaking type brshless DC motor Download PDFInfo
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- CN104242534B CN104242534B CN201410522389.6A CN201410522389A CN104242534B CN 104242534 B CN104242534 B CN 104242534B CN 201410522389 A CN201410522389 A CN 201410522389A CN 104242534 B CN104242534 B CN 104242534B
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Abstract
The invention discloses a kind of soaking type brshless DC motor, including casing, rotor and stator are provided with casing, main shaft is provided with the middle part of rotor, the two ends of main shaft are connected on the housing by bearing, isolating cylinder is provided with the casing, sealed stator rest area is formed between isolating cylinder and casing, the stator is placed in stator rest area；The main shaft is provided with spiral helicine guiding gutter at least at the bearing.The soaking type brshless DC motor of the present invention need not do any outside sealing, directly be contacted with water, and cooling water can flow in motor internal, and cooling effect is strong.
Description
Technical field
The present invention relates to a kind of brshless DC motor, and in particular to a kind of soaking type brshless DC motor.
Background technology
Carbon brush easily weares and teares current brushed DC motor in use, once water inlet will be short-circuit, energy consumption is higher.It is general
Logical brushless electric machine energy consumption is although low, but same water inlet easily short circuit, and it is dumb to commutate, and has delay phenomenon, and speed governing is slow.More than
Two kinds of direct current generators and common brushless electric machine are not the best products used under water.
The technical problem that motor exists in immersion in the prior art includes：Motor needs outside seal, it is impossible to directly connect
Water is touched, is sealed usually using sealing ring.Common brshless DC motor just has delay when rotating, and needs step by step
Speed change.Common electric machine uses rolling bearing, and usual material is steel, is easily got rusty under water, and coefficient of friction is big, high energy consumption.Common electricity
Machine can not be directly water-cooled under water, easily heating.
The content of the invention
Present invention seek to address that one of technical problem present in above-mentioned present technology, proposes a kind of soaking type brushless direct-current
Motor.
For above-mentioned purpose, the technical solution adopted by the present invention is：
It is provided with a kind of soaking type brshless DC motor, including casing, casing in the middle part of rotor and stator, rotor provided with master
Axle, the two ends of main shaft are connected on the housing by bearing, and isolating cylinder, shape between isolating cylinder and casing are provided with the casing
Into sealed stator rest area, the stator is placed in stator rest area；The main shaft is provided with helical form at least at the bearing
Guiding gutter.
Having the enamel-covered wire of stator winding when being worked under water due to brushless electric machine only, to belong to electronic section afraid of water, according to the present invention
Soaking type brshless DC motor by the way that motor housing is made inside and outside two layers, outer layer is protecting of stator shell, and internal layer is isolating cylinder,
Stator rest area is formed between protecting of stator shell and isolating cylinder.Stator is put into stator rest area, epoxy resin encapsulated gap is used
To reach the waterproof effect of motor stator.The present invention on main shaft also by being designed with spiral guiding gutter, band as the spindle turns
Dynamic helicla flute rotation, so that the water outside motor is flowed into from the bearing of main shaft one end through guiding gutter, in the gap of stator and rotor
Flowing, then flows out at the bearing of the main shaft other end through guiding gutter.It follows that the soaking type brshless DC motor of the present invention
Any outside sealing need not be done, is directly contacted with water, and cooling water can flow in motor internal, and cooling effect is strong.
Soaking type brshless DC motor according to embodiments of the present invention can also have following additional technical feature：
It is preferred that, the outside of the rotor is provided with waterproof drum, and the two ends of the waterproof drum are connected to the two ends of the rotor.
The waterproof drum is stainless steel waterproof drum.
It is preferred that, the gap between the waterproof drum and isolating cylinder is 0.3mm.Through testing motor with the same galvanic gaps of voltage
More than 0.3mm（Isolating cylinder and turn between waterproof drum）When can cause motor torque reduce rotating speed lifting, cause can efficiency reduction.When
Gap, which is less than 0.3mm, can not discharge calcium and magnesium impurity and tiny silt that motor internal is produced under water for a long time, can cause electricity
Machine stall.
It is preferred that, the isolating cylinder is that encapsulant is wrapped in formation on the outside of the stator.
It is preferred that, the encapsulant is epoxy resin.It follows that reaching motor using epoxy resin encapsulated gap
The waterproof effect of stator.
It is preferred that, the bearing is sliding bearing, and sliding bearing is provided with some grooves, the groove filled with lubrication
Material.It follows that the steel rolling bearing used relative to common electric machine, using sliding bearing, lubriation material graphite is inlayed
It is embedded into copper sheathing, reduces coefficient of friction, reduces energy consumption.Further, it is the rub proofness and lubricity of increase sliding bearing, institute
It is 6 that lubriation material, which is stated, by parts by weight：1 brass and graphite mixing composition.
It is preferred that, the inner surface of the bearing has spiral helicine groove.It follows that Bearing inner has matrix spiral goove
Groove is acted on（1）Motor helical axle is coordinated to realize motor internal water circulation, also can be by motor internal calcium and magnesium impurity and tiny silt
Discharge motor internal；(2) coefficient of friction of axle and graphite bearing is reduced to reduce energy consumption of electrical machinery.In addition, if only on main shaft
If guiding gutter, then water-carrying capacity is limited to the size of guiding gutter and the rotating speed of main shaft, and water-cooled effect is poor.Groove is also provided with bearing,
A part of water can be flowed into or under the drive of main axis from the groove on bearing, add water-carrying capacity, water-cooled effect
It is good.It is used as preferred, spiral shell cabinet of the spiral grooves pitch more than guide groove on main shaft on bearing, so, in rotating through for main shaft
Cheng Zhong, the current introduced by main shaft helicla flute can quickly flow because the resistance by spiral grooves on bearing is smaller
Go out, then the half side formation negative pressure after bearing, further increases water velocity.But pitch should not be too big on bearing, if too big
The rotation of water can be then influenceed, it is guide groove on main shaft that current are flowed out with the spiral grooves pitch produced on resistance, therefore bearing
1.2-2 times of spiral shell cabinet be advisable.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the structural representation of soaking type brshless DC motor of the present invention；
Fig. 2 is the surface structure schematic diagram of soaking type brshless DC motor of the present invention；
Fig. 3 is the structural representation of the stator rest area part of the present invention（One）；
Fig. 4 is the structural representation of the stator rest area part of the present invention（Two）；
Fig. 5 is the structural representation of the bearing of the present invention.
Description of reference numerals：
Casing 1, rotor 2, stator 3, main shaft 4, bearing 5, epoxy resin isolating cylinder 6, stainless steel waterproof drum 7, stator are placed
Area 8, brass 9, graphite 10, water channel 11, groove 12.
Embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining of the invention, and it is not intended that
Limitation of the present invention.
With reference to Fig. 1-5, a kind of soaking type brshless DC motor of the embodiment of the present invention, including casing 1, rotor 2, stator
3rd, main shaft 4, bearing 5, epoxy resin isolating cylinder 6 and stainless steel waterproof drum 7.
Rotor 2 and stator 3 are provided with casing 1, the middle part of rotor 2 is provided with main shaft 4.The two ends of main shaft 4 are connected to by bearing 5
On casing 1, water channel 11 is provided with one end of left side bearing 5 in casing 1.Epoxy resin isolating cylinder 6, asphalt mixtures modified by epoxy resin are provided with casing 1
Fat isolating cylinder 6 is that encapsulant epoxy resin is wrapped in the outside of stator 3 formation.Between epoxy resin isolating cylinder 6 and casing 1
Sealed stator rest area 8 is formed, the stator 3 is placed in stator rest area 8.The outside of the rotor 2 is provided with stainless steel waterproof
Cylinder 7, the two ends of stainless steel waterproof drum 7 are connected to the two ends of rotor 2.Between stainless steel waterproof drum 7 and epoxy resin isolating cylinder 6
Gap is 0.3mm.It is more than 0.3mm with galvanic gaps with voltage through experiment motor（Isolating cylinder and turn between waterproof drum）When can cause
Motor torque reduces rotating speed lifting, and causing can efficiency reduction.Motor internal can not be discharged for a long time in water when gap is less than 0.3mm
The calcium and magnesium impurity and tiny silt of lower generation, can cause motor rotation blockage.
As shown in figure 5, bearing 5 is sliding bearing, sliding bearing is provided with some grooves, the groove filled with lubrication
Material.Lubriation material is 6 by parts by weight：1 brass 9 and graphite 10 mixing composition.
Main shaft 4 is provided with spiral helicine guiding gutter at the bearing 5, and guiding gutter connects the water channel 11.The interior table of bearing 5
Face has spiral helicine groove 12.It follows that the groove 12 for having matrix spiral inside bearing 5 is acted on（1）Coordinate motor helical
Axle realizes motor internal water circulation, also motor internal calcium and magnesium impurity and tiny silt can be discharged into motor internal；(2) axle is reduced
Energy consumption of electrical machinery is reduced with the coefficient of friction of graphite bearing.In addition, if only setting guiding gutter on main shaft 4, then pass through water channel 11
Water-carrying capacity be limited to the size of guiding gutter and the rotating speed of main shaft 4, water-cooled effect is poor.Groove 12 is also provided with bearing 5, a part
Under the drive that water can be rotated from main shaft 4, flowed into or from from the groove 12 on bearing 5, add water-carrying capacity, good water-cooling effect.
The pitch of spiral grooves 12 on the present embodiment bearing 5 is 1.5 times of the spiral shell cabinet of guide groove on main shaft 4, so, in the rotation of main shaft 4
Turn during, by the helicla flute of main shaft 4 introduce water channel 11 current due to the resistance by spiral grooves 12 on bearing 5 it is smaller,
Thus can quickly it flow out, then the half side formation negative pressure after bearing 5, further increases water velocity.
Having the enamel-covered wire of the winding of stator 3 when being worked under water due to brushless electric machine only, to belong to electronic section afraid of water, according to this hair
The soaking type brshless DC motor of bright embodiment is inside and outside two layers by the way that motor housing is made, and outer layer is protecting of stator shell, internal layer
For epoxy resin isolating cylinder 6, stator rest area 8 is formed between protecting of stator shell and epoxy resin isolating cylinder 6.Stator 3 is put into
Stator rest area 8, the waterproof effect of motor stator 3 is reached with epoxy resin encapsulated gap.The present invention is also by main shaft 4
Spiral guiding gutter is designed with, helicla flute rotation is driven when main shaft 4 rotates, so that axle of the water outside motor from the one end of main shaft 4
Hold 5 to flow into through guiding gutter, flowed in the gap of stator 3 and rotor 2, then through guiding gutter stream at the bearing 5 of the other end of main shaft 4
Go out.It follows that the soaking type brshless DC motor of the present invention need not do any outside sealing, directly contacted with water, and
Cooling water can flow in motor internal, and cooling effect is strong.
The advantage of the present embodiment：
1. without carbon brush, service life is long；
2. without outside sealing, water flows in motor internal, in the absence of short circuit phenomenon；
3. coefficient of friction is small, energy consumption is low.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (7)
1. it is provided with a kind of soaking type brshless DC motor, including casing, casing in the middle part of rotor and stator, rotor and is provided with main shaft,
The two ends of main shaft are connected on the housing by bearing, it is characterised in that isolating cylinder, isolating cylinder and machine are provided with the casing
Sealed stator rest area is formed between shell, the stator is placed in stator rest area；The main shaft is at least set at the bearing
There is spiral helicine guiding gutter, there is the inner surface of the bearing spiral grooves pitch on spiral helicine groove, bearing to be more than master
The pitch of guide groove on axle, in the rotary course of main shaft, the current introduced by main shaft helicla flute are due to by spiral shell on bearing
The resistance for revolving groove is smaller, thus can quickly flow out, and then the half side formation negative pressure after bearing, further increases water flow velocity
Degree；Spiral grooves pitch on bearing is 1.2-2 times of the pitch of guide groove on main shaft.
2. soaking type brshless DC motor according to claim 1, it is characterised in that the outside of the rotor is provided with waterproof
Cylinder, the two ends of the waterproof drum are connected to the two ends of the rotor.
3. soaking type brshless DC motor according to claim 2, it is characterised in that between the waterproof drum and isolating cylinder
Gap be 0.3mm.
4. soaking type brshless DC motor according to claim 1, it is characterised in that the isolating cylinder is encapsulant bag
It is rolled on the outside of the stator and is formed.
5. soaking type brshless DC motor according to claim 4, it is characterised in that the encapsulant is asphalt mixtures modified by epoxy resin
Fat.
6. soaking type brshless DC motor according to claim 1, it is characterised in that the bearing is provided with some recessed
Lubriation material is filled with groove, the groove.
7. soaking type brshless DC motor according to claim 6, it is characterised in that the lubriation material is by parts by weight
6：1 brass and graphite composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522389.6A CN104242534B (en) | 2014-10-01 | 2014-10-01 | A kind of soaking type brshless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522389.6A CN104242534B (en) | 2014-10-01 | 2014-10-01 | A kind of soaking type brshless DC motor |
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| CN104242534A CN104242534A (en) | 2014-12-24 |
| CN104242534B true CN104242534B (en) | 2017-09-15 |
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| CN201410522389.6A Active CN104242534B (en) | 2014-10-01 | 2014-10-01 | A kind of soaking type brshless DC motor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671390A (en) * | 2015-01-19 | 2015-06-03 | 安徽舜禹水务实业有限公司 | External water tank disinfecting instrument |
| CN110836190B (en) * | 2019-09-28 | 2021-06-01 | 金华市东大泵业有限公司 | Internal mesh-shaped two-state heat-conducting permanent magnet shielding tube pump |
| CN111313583A (en) * | 2019-12-24 | 2020-06-19 | 天津深之蓝海洋设备科技有限公司 | Permanent magnet rotor structure of underwater motor, underwater motor and underwater equipment |
| CN114123616A (en) * | 2021-12-22 | 2022-03-01 | 湖南耐普泵业股份有限公司 | Wet-type motor bearing cooling structure |
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| CN1371542A (en) * | 1999-08-31 | 2002-09-25 | 株式会社荏原制作所 | Motor frame and motor using the motor frame and motor pump |
| CN102868249A (en) * | 2012-10-15 | 2013-01-09 | 浙江东音泵业股份有限公司 | Submersible motor for well |
| CN103149004A (en) * | 2013-03-15 | 2013-06-12 | 杭州电子科技大学 | Special hammer device for nuclear power station |
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| JPS61280728A (en) * | 1985-06-04 | 1986-12-11 | Yazaki Corp | Canned motor pump automatic thrust balance apparatus |
| JPH05219687A (en) * | 1992-02-05 | 1993-08-27 | Yazaki Corp | Canned motor pump |
| KR970006929A (en) * | 1995-07-25 | 1997-02-21 | 배순훈 | Hot water circulation pump with forced circulation of cooling water |
| JPH09191600A (en) * | 1996-01-08 | 1997-07-22 | Mitsubishi Electric Corp | Canned motor and canned motor pump |
| CN102954005A (en) * | 2011-08-16 | 2013-03-06 | 上海佰诺泵阀有限公司 | Low-noise electric pipeline shielding pump |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1371542A (en) * | 1999-08-31 | 2002-09-25 | 株式会社荏原制作所 | Motor frame and motor using the motor frame and motor pump |
| CN102868249A (en) * | 2012-10-15 | 2013-01-09 | 浙江东音泵业股份有限公司 | Submersible motor for well |
| CN103149004A (en) * | 2013-03-15 | 2013-06-12 | 杭州电子科技大学 | Special hammer device for nuclear power station |
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| CN104242534A (en) | 2014-12-24 |
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Effective date of registration: 20180423 Address after: 276800 the southern section of HSBC Road, Rizhao City International Marine City, Shandong Patentee after: RIZHAO SUNTIME AMUSEMENT EQUIPMENT Co.,Ltd. Address before: 250011 No. 1, unit 1, block 5, Chai pan District, Lixia District, Ji'nan, Shandong, China. Patentee before: Chen Wantao |
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| CP03 | Change of name, title or address |
Address after: 276800 resident of taoluo Town, Rizhao City, Shandong Province Patentee after: Rizhao wuguangshise industry and Trade Co.,Ltd. Address before: 276800 the southern section of HSBC Road, Rizhao City International Marine City, Shandong Patentee before: RIZHAO SUNTIME AMUSEMENT EQUIPMENT Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A water immersed brushless DC motor Effective date of registration: 20221018 Granted publication date: 20170915 Pledgee: Rizhao Donggang Rural Commercial Bank Co.,Ltd. Pledgor: Rizhao wuguangshise industry and Trade Co.,Ltd. Registration number: Y2022980018611 |