CN202906682U - DC motor - Google Patents

DC motor Download PDF

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Publication number
CN202906682U
CN202906682U CN2012206207416U CN201220620741U CN202906682U CN 202906682 U CN202906682 U CN 202906682U CN 2012206207416 U CN2012206207416 U CN 2012206207416U CN 201220620741 U CN201220620741 U CN 201220620741U CN 202906682 U CN202906682 U CN 202906682U
Authority
CN
China
Prior art keywords
permanent magnet
circuit board
rotor
stator
cover
Prior art date
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.)
Expired - Fee Related
Application number
CN2012206207416U
Other languages
Chinese (zh)
Inventor
余树斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGMEN LT MOTOR CO Ltd
Original Assignee
JIANGMEN LT MOTOR CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGMEN LT MOTOR CO Ltd filed Critical JIANGMEN LT MOTOR CO Ltd
Priority to CN2012206207416U priority Critical patent/CN202906682U/en
Application granted granted Critical
Publication of CN202906682U publication Critical patent/CN202906682U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a DC motor, comprising a rotor, a stator, a front cover, and a rear cover. The rotor comprises a rotating shaft, a rotor core and a permanent magnet. The permanent magnet is formed by a plurality of arc permanent magnet blocks and the arc permanent magnet blocks are fixed outside the rotor core in a surrounding manner. An inner side of the rotor core is provided with arc grooves matched with the arc permanent magnet blocks. The stator and the rotor are disposed on a same rotating shaft axis. The front cover is disposed on a front end of the rotating shaft. The rear cover is connected with the stator through bolts. The DC motor also comprises a frequency conversion circuit board and a circuit board cover. The frequency conversion circuit board is connected with a stator circuit. The circuit board cover is disposed on an outer side of the rear cover. The frequency conversion circuit board is installed on the circuit board cover. Through adding the frequency conversion circuit board, the DC motor can convert 220V alternating current to 300V pulsating sine direct current. Compared with electric energy conversion rate of 30% of conventional motors, the electric energy conversion rate of the DC motor reaches 80-90%, so energy saving effect is good.

Description

A kind of direct current machine
Technical field
The utility model relates to a kind of technical field of motors, relates in particular to a kind of brshless DC motor.
Background technology
Motor is the power source in the fields such as industrial or agricultural, building and public utility, is " heart " parts of socio-economic development.At present China motor year power consumption surpasses 2,000,000,000,000 kilowatt hours, account for national power consumption 60% and industrial electric weight 80%.
Since the eighties in 20th century, China and outside China has launched deep research to brushless DC motor.Along with the development of permanent magnetism new material, microelectric technique, Digital Signal Processing, automatic control technology and power electronic technology, particularly high-power switch device, brushless DC motor has obtained significant progress.Brushless DC motor has not been the direct current machine that specially refers to have the electronics commutation, but general reference has the electronics commutated motor of brush DC motor external behavior.
But because brshless DC motor on the market adopts the punching press cast aluminium as rotor, easily excitation loss and carbon brush loss, thereby power consumption is large, and in addition, power of motor is less, and efficient is lower, can't be widely used.
Summary of the invention
The purpose of this utility model is in order to overcome above deficiency, a kind of energy-conservation direct current machine is provided, this utility model is by arranging a frequency changer circuit plate with power saving function, the 220V alternating current can be transformed into the pulsation sine DC electricity of 300V, improve the electric energy conversion rate, reach the energy-saving effect of motor.
The technical solution of the utility model is: a kind of direct current machine, comprise rotor, stator, protecgulum, bonnet, rotor comprises rotating shaft, rotor core and permanent magnet, described permanent magnet is comprised of a plurality of arc-shaped permanent magnet piecemeals and around being fixed on the rotor core outside, the rotor core inboard is provided with the deep-slotted chip breaker that matches with the arc-shaped permanent magnet piecemeal, stator and rotor are positioned on the same shaft axis, protecgulum is positioned at the rotating shaft front end, bonnet is connected with stator by bolt, it is characterized in that: also comprise frequency changer circuit plate and circuit board cover, described frequency changer circuit plate is connected with stator circuit, and circuit board cover is positioned at the bonnet outside, and the frequency changer circuit plate is installed on the circuit board cover.
Described permanent magnet is the ferrite magnetic sheet, by with the ferrite magnetic sheet as permanent magnet, thereby have the coercive force height, anti-degaussing ability is strong, and conventional demagnetization curve is in linear characteristics such as reversible on a large scale, utilize the rare earth element magnet of high-coercive force to be processed as rotor, can significantly improve the efficient of motor, saved manufacturing cost.
Described frequency changer circuit plate can be transformed into the 220V alternating current pulsation sine DC electricity of 300V, use this frequency changer circuit plate after, the energy conversion rate of this motor can reach 80~90%, reaches energy-saving effect.
The beneficial effects of the utility model are:
1, the utility model is by increasing the frequency changer circuit plate, the 220V alternating current can be transformed into the pulsation sine DC electricity of 300V, electric energy conversion rate than conventional motors about 30% is that the motor energy conversion rate that the utility model provides reaches 80~90%, good energy-conserving effect.
2, adopt the ferrite magnetic sheet as permanent magnet, simplified production technology, and the ferrite magnetic sheet belongs to rare earth permanent-magnetic material, thereby have coercive force height, the strong characteristics of anti-degaussing ability, saved manufacturing cost.
3, the utility model is used in the water-pumping/draining decorum, and tentative prediction is saved 30% material than the conventional motors water-pumping/draining decorum, and the integrated power-saving rate can reach 17%.Calculate by this motor 350W power output, input power 403W with brushless electric machine, and the input power of induction machine is 515W, per hour brushless electric machine can saves energy 0.12 be spent, be 12 hours by one day water pump average operation time, every day can saves energy 1.44 degree, 1 year energy saves energy 525 degree, because the weight of the design motor that adopts structure optimization reduces to 11KG from original 16KG, economical with materials cost 30%.
Description of drawings
Accompanying drawing 1 is the decomposition texture schematic diagram of direct current machine described in the utility model.
Among the figure, 1-rotor, 11-rotor core, 12-rotating shaft, 13-permanent magnet, 14-bearing, 2-stator, 21-stator core, 22-middle cover, 3-protecgulum, 4-bonnet, 5-frequency changer circuit plate, 6-circuit board cover, 7-bolt.
Embodiment
Below in conjunction with embodiment the utility model is described further:
In the present embodiment, as shown in Figure 1, a kind of direct current machine comprises rotor 1, stator 2, protecgulum 3, bonnet 4, and rotor 1 comprises rotating shaft 12, rotor core 11 and permanent magnet 13, permanent magnet 13 is the ferrite magnetic sheet, the ferrite magnetic sheet belongs to rare earth permanent-magnetic material, thus have the coercive force height, anti-degaussing ability is strong, and conventional demagnetization curve is in linear characteristics such as reversible on a large scale, utilize the rare earth element magnet of high-coercive force to be processed as rotor, can significantly improve the efficient of motor, saved manufacturing cost.
Permanent magnet 13 is comprised of a plurality of arc-shaped permanent magnet piecemeals and around being fixed on rotor core 11 outsides, rotor core 11 inboards are provided with the deep-slotted chip breaker that matches with the arc-shaped permanent magnet piecemeal, stator 2 is positioned on same rotating shaft 12 lines with rotor 1, protecgulum 3 is positioned at rotating shaft 12 front ends, and bonnet 4 is connected with stator 2 by bolt 7.
Direct current machine also comprises for the frequency changer circuit plate 5 and the circuit board cover 6 that realize Energy Saving Control, the frequency changer circuit plate can be transformed into the 220V alternating current pulsation sine DC electricity of 300V, frequency changer circuit plate 5 is connected with stator 2 circuit, circuit board cover 6 is positioned at bonnet 4 outsides, and frequency changer circuit plate 5 is installed on the circuit board cover 6.
Embodiment of the present utility model is as follows:
Adopt the ferrite magnetic sheet around being fixed on rotor core 11 outsides, rotor core 11 inboards are provided with the deep-slotted chip breaker that matches with the arc-shaped permanent magnet piecemeal, stator 2 is positioned on the same shaft axis with rotor 1, the inner ring of bearing 14 is set in the rotating shaft 12, and with rotating shaft 12 rotations, frequency changer circuit plate 5 is connected with stator 2 circuit, frequency changer circuit plate 5 has energy-conservation Functional Design, the 220V alternating current can be transformed into the pulsation sine DC electricity of 300V, after using this frequency changer circuit plate 5, the energy conversion rate of this motor can reach 80~90%, reaches energy-saving effect.
More than show and described principal character of the present utility model and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (2)

1. direct current machine, comprise rotor, stator, protecgulum, bonnet, rotor comprises rotating shaft, rotor core and permanent magnet, described permanent magnet is comprised of a plurality of arc-shaped permanent magnet piecemeals and around being fixed on the rotor core outside, the rotor core inboard is provided with the deep-slotted chip breaker that matches with the arc-shaped permanent magnet piecemeal, stator and rotor are positioned on the same shaft axis, protecgulum is positioned at the rotating shaft front end, bonnet is connected with stator by bolt, it is characterized in that: also comprise frequency changer circuit plate and circuit board cover, described frequency changer circuit plate is connected with stator circuit, and circuit board cover is positioned at the bonnet outside, and the frequency changer circuit plate is installed on the circuit board cover.
2. direct current machine according to claim 1, it is characterized in that: described permanent magnet is the ferrite magnetic sheet.
CN2012206207416U 2012-11-21 2012-11-21 DC motor Expired - Fee Related CN202906682U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012206207416U CN202906682U (en) 2012-11-21 2012-11-21 DC motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012206207416U CN202906682U (en) 2012-11-21 2012-11-21 DC motor

Publications (1)

Publication Number Publication Date
CN202906682U true CN202906682U (en) 2013-04-24

Family

ID=48127302

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012206207416U Expired - Fee Related CN202906682U (en) 2012-11-21 2012-11-21 DC motor

Country Status (1)

Country Link
CN (1) CN202906682U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104811004A (en) * 2014-01-23 2015-07-29 黄朝星 Permanent-magnet synchronous motor with built-in frequency converter
CN108757489A (en) * 2018-05-25 2018-11-06 浙江东音泵业股份有限公司 A kind of pump integrated form frequency-changing control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104811004A (en) * 2014-01-23 2015-07-29 黄朝星 Permanent-magnet synchronous motor with built-in frequency converter
CN108757489A (en) * 2018-05-25 2018-11-06 浙江东音泵业股份有限公司 A kind of pump integrated form frequency-changing control system

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130424

Termination date: 20201121