CN2207025Y - Low-noise efficient, high-voltage explosion-resistant motor - Google Patents
Low-noise efficient, high-voltage explosion-resistant motor Download PDFInfo
- Publication number
- CN2207025Y CN2207025Y CN94218839U CN94218839U CN2207025Y CN 2207025 Y CN2207025 Y CN 2207025Y CN 94218839 U CN94218839 U CN 94218839U CN 94218839 U CN94218839 U CN 94218839U CN 2207025 Y CN2207025 Y CN 2207025Y
- Authority
- CN
- China
- Prior art keywords
- wind
- motor
- noise
- bearing
- explosion
- 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
Links
Images
Classifications
-
- 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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to a low-noise efficient, high-voltage explosion-resistant motor, air gap can be enlarged through adopting an oblique slot cast aluminium rotor (13) and a magnetic slot wedge (14) on a stator. A bearing structure can be improved on machinery, the rigidity of a motor can be improved, and a silencing cap can be arranged in the ventilation aspect. Wind conducting elements of a cone body (22), a wind collecting device (21), an inner wind board (18) and an outer wind board (19) are arranged in the wind path. The silencing cap comprises an exhaust hood (10), a cover plate (11) and a wind inlet hood (17). Sound absorbent linings (15) are respectively arranged on the inner walls of the exhaust hood (10), the cover plate (11) and the wind inlet hood (17). An inner blast fan (16) and an outer blast fan (20) are both low-loss axial flow blast fan. The noise efficiency of the motor can be obviously improved. The device has simple structure, good effect, high efficiency, energy saving and convenient manufacturing and repairing.
Description
The present invention relates to a kind of flame-proof motor, particularly sound proof housing, skewed rotor low noise efficient high-pressure flame-proof electric motor be housed.
As everyone knows, reduce motor noise, improve efficiency of motor, be assault the main target for many years problem, none effective way so far of electric manufacturing.The noise of motor has become a kind of public hazards, not only contaminated environment, also seriously disturb and carry out production strictly in line with rules and regulations, keep the safety in production, because the electric energy that electric efficiency is low, waste is a large amount of, hv explosion-proof motor particularly, because complex structure, also lower than common electric machine efficient, noise is also big, a hv explosion-proof motor of using such as grand celebration refinery ketone-benzol device, because of noise is big, make workman's continuous operation at the scene.In the colliery, usually do not hear mine car sound greatly personal injury takes place because of noise of motor.In the place of using hv explosion-proof motor, people are very urgent to the requirement that reduces noise.
The object of the present invention is to provide a kind of simple in structure, easily manufactured, be convenient to keep in repair, eliminate the noise effective and can improve the novel low-noise sound of electric efficiency, efficient, hv explosion-proof motor.
The noise of motor is made of machinery, electromagnetism and three parts of ventilating, and the present invention adopts following technical scheme under the prerequisite of taking into account the raising electric efficiency:
Electromagnet portion: adopt skewed slot cast-aluminum rotor (13), go up employing magnetic slot-seal (14) at stator (5), air gap between rotor (13) and stator (5) is amplified to 2-3mm, reasonably distribute electromagnetic load, improve field waveform, promptly reduce stray loss, improved electric efficiency again.
Mechanical part: adopt thin radial ball bearing (4) at shaft extension end (1), the axle other end adopts the short garden post roller bearing (7) of thin, and the mating surface (3) of bearing (4), (7) and end cap (5) all adopts " movingly ".
Aeration portion: the sound proof housing of being made up of air intake cover (17), cover plate (11), exhaust hood (10) is installed, go up by the absorbent lining of forming by sound-absorbing material (15) at cover plate (11), in wind path, increased cone (22) wind collecting unit (21), outer wind deflector (19), internal air baffle (18) thus having suppressed sound wave produces and leaks.
Realize that measure of the present invention is: in electromagnet portion, rotor adopts skewed slot cast-aluminum rotor (13); Stator (5) is gone up and is adopted magnetic slot-seal (14); Air gap (12) between rotor (13) and the stator (5) is unconventional and unrestrained to 2-3mm.Skewed slot cast-aluminum rotor (13) has improved field waveform; The air gap (12) that amplifies, add magnetic slot-seal (14) and reasonably distribute electromagnetic load, will reduce motor stray loss, improve efficiency of motor.Adopt two radial ball bearings in mechanical aspects in the present high-revolving high and low pressure motor in order to eliminate, move about axially being difficult to because of heating in the use, cause bearing portion often to generate heat, and produce the disadvantage of vibration, noise therefrom, the present invention adopts thin radial ball bearing (4), adopts the short garden post Roller Shaft ball bearing (4) of thin, rotor can axially freely moved about at the axle other end at shaft extension end (1), the vibration of bearing portion, noise and heating reduce greatly, because of bearings at both ends is thin, loss is little, has improved efficiency of motor again.In cooperating of bearing outside and bearing chamber, also " interference fits " always selected for use decades by electromechanics trade changes precision higher " movingly " into.Tolerance fixes on and is equivalent on GB1800～1904-79 " form and position tolerance and surface roughness " K6, the end-play of bearing is in operation is guaranteed, and has reduced because of play reduces bearing " other strength " and the vibration, noise and the heating that produce.
The sound proof housing of being made up of air intake cover (17), cover plate (11), exhaust hood (10) is installed aspect ventilation, on cover plate (11) by the absorbent lining of forming by sound-absorbing material (15), in wind path, increased cone (22) wind collecting unit (21), outer wind deflector (19), internal air baffle (18) thus suppressed the generation of sound wave and leaked.
In sum, the present invention is simple in structure, and it is effective to eliminate the noise, efficient height, energy savings, easily manufactured, easy to maintenance, particularly more can demonstrate unique advantages of the present invention in the place of inflammable, explosive use hv explosion-proof motor.
Concrete scheme of the present invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is a two bearings of the present invention chamber cutaway view
Fig. 2 is a structure cutaway view of the present invention
The embodiment of the invention is main zero, component names, code name are as follows:
(1) shaft extension end
(2) bearing end cover
(3) mating surface of bearing end cover and end cap
(4) radial ball bearing
(5) mating surface of end cap and bearing outside
(6) internal bearing cover
(7) lack garden post roller bearing
(8) end cap
(9) exhaust outlet
(10) exhaust hood
(11) cover plate
(12) air gap
(13) skewed slot cast-aluminum rotor
(14) magnetic slot-seal
(15) absorbent lining
(16) internal fan
(17) air intake cover
(18) internal air baffle
(19) outer wind deflector
(20) external fan
(21) wind collecting unit
(22) cone
(23) air inlet
(24) stator
This enforcement is example with the extremely explosion-proof electricity of 200kW 6000V 2, in order to reach the purpose of invention, is mainly influencing the electromagnetism of noise, machinery and three parts of ventilating have been implemented following way.
In electromagnet portion, increased air gap between stator and rotor (12) and on stator (5), adopted magnetic slot-seal (14); Again mate electromagnetic load, on hv explosion-proof motor, adopt skewed slot cast-aluminum rotor (13) first, thereby improved field waveform; And reduced stray loss, improved efficiency of motor.
Change domestic high and low pressure 2P motor on bearing at mechanical part is selected for use, cooperated and all selected 2 radial ball bearing practices for use, and use a thin radial ball bearing (4) at shaft extension end (1), the other end is the short garden post roller bearing (7) of thin, rotor can axially freely moved about, and the vibration of bearing portion, noise and heating all decrease.After adopting two thin bearings, reduce mechanical loss, improved electric efficiency.Simultaneously the tolerance of bearing chamber is changed into by " interference fits " and be equivalent to higher " movingly " of precision among GB1800～1804-79 " form and position tolerance and surface roughness " K6, the end-play of bearing is in operation to be guaranteed, bearing " other strength " and the vibration, noise and the heating that produce have been reduced because of play reduces.
Aspect ventilation: add sound proof housing, improve wind path and inside and outside fan, according to aerodynamic principle, sound proof housing is taken measures from suppressing the sound wave generation and two aspects that leak.Sound proof housing is made up of air intake cover (17), cover plate (11) and exhaust hood (10) three parts.Air intake cover (17) by traditional axially changing into radially, promptly changes air inlet (23) into side air inlet by the front air intake, makes air-flow and external fan (20) turn 90 ° of angles before meeting, and avoids air-flow directly to meet with fan and produces noise greatly.Adding the wind-guiding original paper in wind path--cone (22), wind collecting unit (21), outer wind deflector (19), internal air baffle (18), restriction air-flow directly blow to the wedge angle position of motor, have reduced the noise that causes therefrom.The airflow limitation that cover plate (11) is produced by boasting air intake cover (17) one only can satisfy the cooling motor surface very among a small circle in, avoided leaking by the noise that air-flow brings, and get up with sound-absorbing material (15) lining at cover plate (11) inwall, again the noise that produces has been absorbed a part.Exhaust hood (10) is connected with cover plate (11), and the cooling blast that is blown by cover plate (11) has turned 90 ° here and both consumed acoustic energy, has cooled off bearing portion again.Simultaneously, exhaust hood (10) inner surface also is lined with deadener, and the noise that produces by ventilating here obtains continuing to reduce.
The operation of present embodiment facts have proved that the solution of the present invention is correct, and realization of the present invention will reduce noise for hv explosion-proof motor, raises the efficiency, energy savings plays a role in promoting.
Claims (4)
1, a kind of sound proof housing that is equipped with, the low noise of the different thin bearing of structure, efficient, high-voltage explosion-proof motor are respectively adorned in the axle two ends, it is characterized in that rotor is skewed slot cast-aluminum rotor (13), shaft extension end (1) is adorned a thin radial ball bearing (4), the axle other end is adorned the short garden post roller bearing (7) of a thin, and sound proof housing is made up of exhaust hood (10), cover plate (11), air intake cover (17).
2, hv explosion-proof motor according to claim 1 is characterized in that the slot wedge in the stator (5) is magnetic slot-seal (14).
3, hv explosion-proof motor according to claim 1 is characterized in that bearing (4), (7) are equivalent to numerical value among GB1800～1804-79 " form and position tolerance and surface roughness " K6 with mating surface (3) precision of end cap (8).
4, fire-proof motor according to claim 1 is characterized in that the wind-guiding element is arranged in the wind path--cone (22), wind collecting unit (21), inside and outside wind deflector (18), (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94218839U CN2207025Y (en) | 1994-08-10 | 1994-08-10 | Low-noise efficient, high-voltage explosion-resistant motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94218839U CN2207025Y (en) | 1994-08-10 | 1994-08-10 | Low-noise efficient, high-voltage explosion-resistant motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2207025Y true CN2207025Y (en) | 1995-09-06 |
Family
ID=33833901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94218839U Expired - Fee Related CN2207025Y (en) | 1994-08-10 | 1994-08-10 | Low-noise efficient, high-voltage explosion-resistant motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2207025Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1929257B (en) * | 2005-09-08 | 2010-05-26 | 株式会社东芝 | Automotive dynamoelectric machine |
-
1994
- 1994-08-10 CN CN94218839U patent/CN2207025Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1929257B (en) * | 2005-09-08 | 2010-05-26 | 株式会社东芝 | Automotive dynamoelectric machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103629128B (en) | A kind of Silent fan | |
| CN1132293C (en) | Air cooling electric machine with axial fan | |
| CN1945935A (en) | Small power cage type induction motor | |
| CN2207025Y (en) | Low-noise efficient, high-voltage explosion-resistant motor | |
| CN115822775A (en) | Heat dissipation air duct of silent generator set | |
| CN200968294Y (en) | Line-type centrifugal fan structure | |
| CN1144977C (en) | Air conditioner inlaid in ceiling | |
| CN100340776C (en) | Low noise high pressure centrifugal fan | |
| CN103603817A (en) | Medium-pressure air blower | |
| TWI812263B (en) | Fan and cleaning device | |
| CN102588351A (en) | Low-noise device for centrifugal compressor of turbocharger | |
| FI111290B (en) | High pressure blower | |
| CN203548278U (en) | Centrifugal fan | |
| CN103016369A (en) | Novel axial-flow fan with small-aspect-ratio blades having obliquely-cut and twisted blade roots | |
| CN101942533A (en) | Dried radial flow recovery unit of excessive pressure and residual heat in blast-furnace gas | |
| CN201206569Y (en) | Draught fan | |
| CN221299567U (en) | Fan with sealing structure | |
| CN102355082B (en) | Motor for dust collector | |
| CN218118076U (en) | Centrifugal circulating fan with high rotating speed and low noise | |
| CN2382867Y (en) | Low noise fan for transformer | |
| CN213870291U (en) | Roots blower with sound insulation device | |
| WO2022052551A1 (en) | Fan and cleaning apparatus | |
| CN214887970U (en) | Novel centrifugal fan | |
| CN212717303U (en) | High-efficient low noise mixed flow fan | |
| CN1789727A (en) | High-pressure multistage centrifugal blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |