CN2266218Y

CN2266218Y - Noise-reduced motor

Info

Publication number: CN2266218Y
Application number: CN 96217835
Authority: CN
Inventors: 赵松年
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-16
Filing date: 1996-07-16
Publication date: 1997-10-29
Anticipated expiration: 2006-07-16

Abstract

The utility model relates to a miscellaneous-reduced resuscitating motor, comprising a casing, a rotor, a rotating shaft and a winding. The utility model is characterized in that 36 stator slots are arranged on the stator, 33 rotor slots are arranged on the rotor, and the winding wire pack in the stator slot is a double-layer winding. The edges of two bottom coils in each stator slot are four-stage 36-slot winding wires, each 3 coils are connected together as a polar phase group, and the utility model is provided with 12 pole phase groups. An air gap width between the rotor and the stator is 0.50-0.55 mm, and an aluminum cast bridge on the surface of a rotor notch part penetrates into the slot with 0.1-2.5 mm. The utility model has simple structure, little miscellaneous loss, energy-saving utilization and large power.

Description

Subtract the assorted motor of bringing back to life

The utility model relates to the improved New-type electric machine in a place, promptly subtracts the assorted motor of bringing back to life.

Motor is that industrial production etc. is requisite, its structure is to be made of casing, rotor, stator, rotating shaft and winding, but this structure motor, in use miscellaneous loss is very big, efficient is low, even being eliminated of having, it mainly is structurally unreasonable entangling its reason, the groove number of first stator and rotor is few, and air gap flux density and the close pulsation of tooth magnetic that this causes when making the rotor rotation produce pulsation loss; It two is that air gap is little between stator and rotor, this air-gap flux that causes when making the motor rotor rotation is closeer on the stator teeth position, and it is thinner at slot part, the space pulsation of air-gap flux increases the rotor surface loss, but also on rotor, produce the harmonic wave copper loss, supplementary load loss are increased, and efficient reduces; It three is that the cast aluminium bridge of rotor notch is too high, can cause that when rotor rotation the close surface of air gap flux density and tooth produces pulsation loss; It four is, stator winding structure is individual layer staggered form or individual layer chain type, though this winding technology is simple, the harmonic wave composition is big, and power consumption is big.

The purpose of this utility model is exactly at above-mentioned situation, and a kind of novel assorted motor of bringing back to life that subtracts is provided according to the actual needs.

The purpose of this utility model is achieved like this, and on the structure of former motor, increases the groove number of rotor, as existing 2.2--10 kilowatt of motor, 36 of stator slots, 26 of rotor, now be set to 36 of stator slots, rotor is 33, and winding adopts two layer winding, the limit of following two coils in each groove, be the coilings of 4 utmost points, 36 grooves, amplify gas length, remove rotor notch surface cast aluminium bridge, other are still with existing electric motor structure.

The utility model is compared with existing motor, and structure is still very simple, and miscellaneous loss is little, and is energy-conservation, and power obviously increases, and the motor that has been eliminated is come back to life, and it applies good society and economy benefit.

Below in conjunction with accompanying drawing the utility model structure is done the detail explanation.

Fig. 1 is the utility model structural outer figure.

Fig. 2 is the utility model section of structure.

Fig. 3 is a rotor structure figure.

Fig. 4 is rotor structure chart (a rotor-side view).

Fig. 5 is stator winding structure figure.

Fig. 6 is the distributed mode developed winding diagram.

Fig. 7 is the double-deck phase demodulation figure of winding.

Fig. 8 is that stator, rotor gas remove situation map.

By shown in Figure 2, the utility model is that stator 11 is housed in the casing 18, cartridge rotor 14 in the stator 11, there is rotating shaft 8 at rotor 14 centers, rotating shaft 8 one ends stretch out machine and cross outside 18, and be packed on the casing with lid 12 partially by bearing enclosure, the other end is equipped with fan blade 17, fan housing 7 covers fan blade 17 and is fixed on the casing, and the casing bottom has base 10, one sides that terminal box 9 (seeing shown in Figure 1) is arranged, stator slot 13 is arranged on the stator, winding wire bag 16 is housed in the groove, short-circuited conducting sleeve 15 (being the cast aluminium bridge) and rotor 19 (seeing Fig. 3, shown in Figure 4) are arranged on the rotor 14, the winding wire bag is housed in the rotor.Stator slot 13 on the stator 11 is 36, rotor 19 on the rotor 14 is 33, winding wire bag 16 is a two layer winding in the stator slot, and 11 gas lengths of rotor 14 and stator are 0.50-0.55mm, and the cast aluminium bridge on rotor 13 oral area surfaces gos deep into 0.1-2.5mm in the groove; Said two layer winding is the limit of following two coils in each stator slot, is the coilings of 4 utmost points, 36 grooves, and it is that a utmost point is organized mutually that per 3 coils connect together, totally 12 utmost points are organized mutually, and joint 1 and 6,2 and 4,3 communicates with 5, and joint 1 and 4,2 and 5,3 and 6 is joined, constitute delta connection, altogether around 36 coils.

Said structure after the improvement, compare after tested, energy-saving effect is remarkable, as stator slot in former serial 4 pole motor 2.2-10 kilowatts is 36,26 of rotor, existing rotor is 33, stator core on average increases 10-20%, reduced the supplementary load loss that the harmonics of magnetic force magnetic flux causes, it is 1.5 times that power averaging increases; Two layer winding is better than old-fashioned individual layer staggered form, individual layer chain type winding mmf wave, harmonic wave is little, show that loss is little, behavior in service is good, the efficient height, the deployed configuration of Fig. 6, the distribution winding that Figure 7 shows that the utility model employing or the double-deck phase winding of three-phase, the air gap of the motor that former O2 series is 3-5 kilowatt is 0.4-0.45mm, now expand as 0.5-0.55mm, efficient can improve 0.5-1.0%, and the 4-5 degree can fall in temperature rise, also can slacken the single track magnetic pull simultaneously, alleviate the possibility of rotor grazing, thereby improve the reliability of motor; Former motor rotor notch has filled up aluminium (promptly claiming the cast aluminium bridge-type to claim short-circuited conducting sleeve), produce pulsation loss owing to cause the close surface of air gap flux density and tooth during the rotor rotation, structure after the improvement has been removed the cast aluminium bridge makes it in groove behind the dark 0.5-2.6mm, enlarged air gap, reduce the magnetic that causes because of air gap is little arteries and veins loss close and that produce from close surface, can raise the efficiency 0.5-1%.In a word, the utility model science rational in infrastructure can significantly reduce the miscellaneous loss of motor, and energy-saving effect is remarkable, and Vintage Product is come back to life, and economizes on the use of funds, and saves material, and it is applied and benefits the nation and the people, and makes positive contribution for production development.

Claims

1, a kind of motor of bringing back to life of mixing that subtracts, be that stator (11) is housed in the casing (18), rotor (14) is housed in the stator, there is rotating shaft (8) at rotor (14) center, rotating shaft (8) one ends stretch out outside the casing (18), and by bearing, oil sealing is packed on the casing with covering (12) partially, the other end is equipped with fan blade (17), fan housing (7) covers fan blade (17) and is fixed on the casing, base (10) is arranged at the casing bottom, one side has terminal box (9), stator slot (13) is arranged on the stator, winding wire bag (16) is housed in the groove, short-circuited conducting sleeve (15) and rotor (19) are arranged on the rotor (14), the winding wire bag is housed in the groove, it is characterized in that the stator slot (13) on the said stator (11) is 36, winding wire bag (16) is a two layer winding in its stator slot, and gas length is 0.50-0.55mm between rotor (14) and stator (11), and the cast aluminium bridge on rotor (13) oral area surface gos deep into 0.1-2.5mm in the groove.

2, the motor of bringing back to life of mixing that subtracts according to claim 1 is characterized in that the limit of said two layer winding for following two coils in each stator slot, is the coilings of 4 utmost points, 36 grooves, and it is that a utmost point is organized mutually that per 3 coils connect together, and totally 12 utmost points are organized mutually.