CN102075041B

CN102075041B - Transverse flux torque motor with V-shaped air gaps forcedly cooled by fluid

Info

Publication number: CN102075041B
Application number: CN2010105582142A
Authority: CN
Inventors: 赵升吨; 谢嘉; 梁锦涛; 张晨阳; 赵仁峰; 马海宽
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2012-07-04
Anticipated expiration: 2030-11-25
Also published as: CN102075041A

Abstract

The invention provides a transverse flux torque motor with V-shaped air gaps forcedly cooled by fluid. The motor comprises a stator fixed shaft, a rotor shell and a motor shaft, wherein the motor shaft is connected on the stator fixed shaft by bearings; the stator fixed shaft is provided with multiple phases of motor stators; each phase of motor stator comprises a stator winding and two oppositely combined stator cores; the stator cores comprise motor stator yokes and stator bevel gears; the stator windings have trapezoidal cross sections and are arranged among the stator cores; a motor rotor is arranged in the inner cavity of the rotor shell and is of magnetism gathering structure formed by rotor magnetic poles and permanent magnets; and V-shaped air gaps are formed among the stator bevel gears, the rotor magnetic poles and the permanent magnets. The transverse flux torque motor has the following beneficial effects: the effective areas of the air gaps are increased, so the force density of the motor is higher; and cooling liquid flow cavities are arranged among motor stators and outside the motor stators at the two sides and cooling liquid via holes communicated with the cooling liquid flow cavities are arranged in the stator fixed shaft, thus ensuring heat dissipation of the motor.

Description

A kind of V-arrangement air gap transverse magnetic field torque motor that has fluid pressure cooling

Technical field

The invention belongs to the magneto field, particularly a kind of V-arrangement air gap transverse magnetic field torque motor that has fluid pressure cooling.

Background technology

Existing horizontal magnetic field motor is seen from topological structure, mainly comprises unilateral topological structure and bilateral formula topological structure.Though wherein unilateral horizontal magnetic field motor structure is simple relatively, its air gap flux density is low, and power output density is little, is difficult to make the torque motor of big torque.Bilateral formula horizontal magnetic field motor has two air gaps, and rotor generally adopts the magneticfocusing structure, can in motor gas-gap, form high magnetic flux density, thereby power output density is big, is prone to make big torque force torque motor.Bilateral formula horizontal magnetic field motor good use the principle of transverse magnetic field, still, traditional bilateral its permanent magnet of formula horizontal magnetic field motor and rotor magnetic pole all adopt rectangular shape; Under the identical situation of permanent magnet volume, in order to guarantee the mechanical strength of rotor part, the effective length unshakable in one's determination that is used to form air gap just can not be oversize like this; Cause the effective area of motor gas-gap to reduce; Increase the magnetic circuit magnetic resistance, make that the leakage field of motor is bigger, thereby reduce the force density of motor; Make that being worth expensive permanent magnet effect is not well brought into play, and has influenced motor properties.

In view of above problem, be necessary to provide a kind of transverse magnetic field torque motor that can solve the problems of the technologies described above in fact.

Summary of the invention

Technical problem to be solved by this invention provides a kind of V-arrangement air gap transverse magnetic field torque motor that fluid is forced cooling that has; It has increased the air gap effective area; Reduced the magnetic circuit magnetic resistance; Reduced the leakage field of motor, thereby increased the force density of motor, made that being worth expensive permanent magnet effect is well brought into play.

For realizing above-mentioned purpose; The invention provides a kind of V-arrangement air gap transverse magnetic field torque motor that fluid is forced cooling that has, be included in and be fixed with the stator fixed axis on the electric machine support, this stator fixed axis is provided with the polyphase machine stator; Each phase motor stator comprises stator winding; And two stator cores that combine relatively, said stator winding is arranged between the relative stator core, and each stator core is made up of motor stator yoke and stator helical teeth; Rotor case; Be connected with the stator fixed axis through clutch shaft bearing; Be provided with rotor in the inner chamber of this rotor case; This rotor is made up of rotor magnetic pole and permanent magnet, and said rotor magnetic pole along the circumferential direction evenly is assemblied in the rotor case, and said permanent magnet is installed between the adjacent rotor magnetic pole; Machine shaft is arranged on stator fixed axis end and is fixedly connected with rotor case; The machine shaft end support is connected with machine shaft through second bearing, wherein, forms the V-arrangement air gap between said stator helical teeth and rotor magnetic pole and the permanent magnet.

As the preferred embodiments of the present invention, said stator helical teeth becomes an integral body with the motor stator yoke piece, and the stator helical teeth along the circumferential direction evenly is arranged on the motor stator yoke radial outside oblique anchor ring on one side;

As the preferred embodiments of the present invention, the stator helical teeth of the said every phase stator core pole span that on the direction of rotation of motor, staggers, the radial outside between a pair of stator core of every phase motor stator forms the annular space that cross section is a V-arrangement;

As the preferred embodiments of the present invention, said stator winding is the loop construction of annular, and its cross section is trapezoidal;

As the preferred embodiments of the present invention, said rotor magnetic pole and permanent magnet are being V-arrangement perpendicular to the cross section on the motor direction of rotation;

As the preferred embodiments of the present invention, the permanent magnet on said rotor magnetic pole both sides forms magneticfocusing V shape rotor field structure on rotor magnetic pole;

As the preferred embodiments of the present invention; The outside of the motor stator of said both sides is respectively arranged with sealing liquid left and right sides end cap; Cooling fluid is divided through hole about radially being respectively arranged with on the stator fixed axis; Be respectively arranged with the total through hole of cooling fluid up and down that divides through hole to be communicated with above-mentioned cooling fluid up and down on the said stator fixed axis vertically; And form the coolant flow chamber between the adjacent motor stator and between the motor stator of the both sides sealing liquid left and right sides end cap corresponding with it; This coolant flow chamber and aforementioned up and down cooling fluid divide through hole and up and down the total through hole of cooling fluid communicate, the said total through hole of cooling fluid up and down extends to the end of stator fixed axis respectively, in the end of the total through hole of cooling fluid up and down sealed screw is installed;

As the preferred embodiments of the present invention, said coolant flow chamber comprises left coolant flow chamber, right coolant flow chamber, and middle coolant flow chamber; Form said left coolant flow chamber and right coolant flow chamber respectively between the motor stator that said sealing liquid left end cap is adjacent and between the motor stator that is adjacent of sealing liquid right end cap; And forming said middle coolant flow chamber between the motor stator, said middle coolant flow chamber radial outside is provided with lantern ring for liquid seal.

The present invention has fluid forces the V-arrangement air gap transverse magnetic field torque motor of cooling to have the following advantages at least: owing to form the V-arrangement air gap between stator helical teeth of the present invention and rotor magnetic pole and the permanent magnet; Therefore; Increase the air gap effective area, reduced the magnetic circuit magnetic resistance, reduced the leakage field of motor; Thereby increased the force density of motor, made that being worth expensive permanent magnet effect is well brought into play.

Description of drawings

Fig. 1 is the axial arrangement sketch map of transverse magnetic field torque motor of the present invention;

Fig. 2 is the structural representation of the stator core of transverse magnetic field torque motor of the present invention;

Fig. 3 is the structural representation of the motor stator of transverse magnetic field torque motor of the present invention;

Fig. 4 be transverse magnetic field torque motor of the present invention motor stator cut structural representation open;

Fig. 5 is the structural representation of the permanent magnet of transverse magnetic field torque motor of the present invention;

Fig. 6 is the structural representation of the rotor magnetic pole of transverse magnetic field torque motor of the present invention;

Fig. 7 is the structural representation of the rotor core of transverse magnetic field torque motor of the present invention;

Fig. 8 is the structural representation of the rotor of transverse magnetic field torque motor of the present invention;

Fig. 9 is the structural representation of the stator fixed axis of transverse magnetic field torque motor of the present invention;

Figure 10 be transverse magnetic field torque motor of the present invention the stator fixed axis cut structural representation open;

Figure 11 is the present invention four structural representation of 50 pairs of utmost point motor stators, rotor and stator fixed axis mutually.

The relation of label and counter element is following among the figure:

1	Electric machine support	2	The stator fixed axis
				3	Stator winding bus hole	4	The total through hole of last cooling fluid
5，17	Clutch shaft bearing	6	Rotor case
				7	The sealing liquid right end cap	8，10	The motor stator yoke
9	Rotor magnetic pole	11，12	The stator helical teeth
				13	Stator winding	14	The sealing liquid left end cap
15	The machine shaft end support	16	Second bearing
				18，31	Sealed screw	19	Machine shaft
20	Coolant flow chamber, a left side	21	The V-arrangement air gap
				22	Lantern ring for liquid seal	23	Middle coolant flow chamber
24	Right coolant flow chamber	25	Stator winding phase line hole fixed axis part
				26	Stator winding phase line hole stator inside part	27	Last cooling fluid is divided through hole
28	The permanent magnet fit-up gap	29	Permanent magnet
				30	The total through hole of following cooling fluid	32	Following cooling fluid is divided through hole
33	Keyway	34	Key

Embodiment

Below in conjunction with accompanying drawing transverse magnetic field torque motor of the present invention is elaborated.

See also shown in Figure 1; Transverse magnetic field torque motor of the present invention is included on the electric machine support 1 fixing stator fixed axis 2, the rotor case 6 that is connected with stator fixed axis 2 through clutch shaft bearing 5,17, the machine shaft 19 that is arranged on stator fixed axis 2 ends and is fixedly connected with rotor case 6, and passes through the machine shaft end support 15 that second bearing 16 is connected with machine shaft 19.

Please combine Fig. 2, Fig. 3 and shown in Figure 4; Said stator fixed axis 2 is provided with four phase motor stators, and every phase motor stator comprises stator winding 13, and two stator cores that combine relatively; Said stator winding 13 is the loop construction of annular; Its cross section is trapezoidal, be provided with between said two stator cores that combine relatively with stator winding 13 corresponding cross sections be trapezoidal annular space, it is in the trapezoidal annular space that stator former winding 13 promptly is installed in this cross section; Each stator core constitutes an integral body by

motor stator yoke

8,10 and stator

helical teeth

11,12; The number of the stator helical teeth in the said stator core equals the number of pole-pairs of motor; Said stator

helical teeth

11,12 along the circumferential direction is arranged on motor stator yoke 8, the 10 radial outsides oblique anchor ring on one side; Relative stator helical teeth 11 in the said a pair of stator core; 12 at the motor direction of rotation pole span that staggers, and so, the radial outside between a pair of stator core of every phase motor stator forms the annular space that cross section is a V-arrangement.

The radially inner side that stator winding 13 is installed in the said motor stator is provided with a stator winding phase line hole stator inside part 26, is used for single-phase winding cabling; In addition, the interior circle of said motor stator is provided with keyway 33 vertically, please combines shown in Figure 9ly especially, and said stator fixed axis 2 is provided with key 34, and during installation, the key 34 on the stator fixed axis 2 cooperates with keyway 33 on the motor stator and is used for location and transmitting torque.

Below; Please combine Fig. 5 to shown in Figure 8, be provided with four phase rotors in the inner chamber of said rotor case 6, every phase rotor is made up of rotor magnetic pole 9 and permanent magnet 29; Said rotor magnetic pole 9 along the circumferential direction evenly is assemblied in rotor case 6 inner chambers; And rotor magnetic pole 9 is a V-arrangement in the cross section perpendicular to the motor direction of rotation, and simultaneously, the thickness of rotor magnetic pole 9 radially increases from an end to the other end gradually; A plurality of rotor magnetic poles 9 along the circumferential direction evenly distribute and form rotor core, and formation waits the permanent magnet fit-up gap 28 of width between the adjacent rotor magnetic pole 9; Permanent magnet 29 is a V-arrangement in the cross section perpendicular to the motor direction of rotation; Thickness is identical; Be convenient to processing; Permanent magnet 29 promptly along the circumferential direction with N to S in being arranged on this permanent magnet fit-up gap 28 alternately, rotor magnetic pole 9 cooperates with permanent magnet 29 and forms the annulus that cross section is a V-arrangement like this, the permanent magnet 29 on rotor magnetic pole 9 both sides forms magneticfocusing V shape rotor field structure on rotor magnetic pole 9.

In the present invention; Rotor magnetic pole 9 all is V-arrangement with permanent magnet 29 in the cross section perpendicular to the motor direction of rotation; Therefore it just in time is placed in the annular space that aforementioned cross section is a V-arrangement, between the stator

helical teeth

11,12 of motor stator and rotor magnetic pole 9 and permanent magnet 29, has a V-arrangement air gap 21.

Under request in person and combine Fig. 9 and shown in Figure 10; The axial of said stator fixed axis 2 is ladder-type structure, wherein, is provided with the stator winding bus hole 3 that is used for the motor cabling vertically at the center of stator fixed axis 2; The two ends of stator fixed axis 2 are run through in this stator winding bus hole 3; In addition, on stator fixed axis 2, radially be provided with stator winding phase line hole fixed axis part 25, this stator winding phase line hole fixed axis part 25, stator winding bus hole 3; And stator winding phase line hole stator inside part 26 communicates, and this stator winding phase line hole fixed axis part 25 is through to stator fixed axis 2 surfaces.

Please continue to consult shown in Figure 1; Each phase motor stator evenly distributes vertically; The arranged outside that is positioned at the two-phase induction motor stator at two ends has sealing liquid left end cap 14 and sealing liquid right end cap 7; Form the coolant flow chamber between the adjacent motor stator and between the motor stator of both sides and corresponding sealing liquid left end cap 14 or the sealing liquid right end cap 7; Wherein, the coolant flow chamber between the motor stator of said sealing liquid left end cap 14 and left end is left coolant flow chamber 20, and the coolant flow chamber between the motor stator of said sealing liquid right end cap 7 and right-hand member is right coolant flow chamber 24; And the coolant flow chamber that forms between the adjacent motor stator is middle coolant flow chamber 23, and the radial outside in said middle coolant flow chamber 23 is provided with lantern ring for liquid seal 22.

Below; Please consult Fig. 1, Fig. 9 and shown in Figure 10 especially; Cooling fluid is divided through

hole

27,32 about radially being respectively arranged with on the stator fixed axis 2; Be respectively arranged with the total through

hole

4,30 of cooling fluid up and down that divides through

hole

27,32 to be communicated with above-mentioned up and down cooling fluid on the said stator fixed axis 2 vertically, and about above-mentioned cooling fluid divide through

hole

27,32 and said about and middle

coolant flow chamber

20,24; 23 are communicated with, and the said total through

hole

4,30 of cooling fluid up and down extends to the end of stator fixed axis 2 respectively.So, cooling fluid is injected from the total through hole of last cooling fluid 4, about last cooling fluid divides through hole 27 to flow into respectively and middle coolant flow chamber 20; 24,23, cooling fluid divides through hole 32 to flow into total through hole 30 outflows of cooling fluid down under the process again; Form circulation and reach cooling purpose; For easy to process, the total through hole 4 of last cooling fluid is made through hole with the total through hole 32 of following cooling fluid, at stator fixed axis 2 other ends outflow that sealed

screw

18 and 31 is used to prevent cooling fluid is installed respectively like this.So, the setting of this fluid pressure cooling system has guaranteed the heat radiation of motor, makes motor can export big moment.

Below, see also shown in Figure 11ly, be four structural representations of 50 pairs of utmost point motor stators, rotor and stator fixed axis 2 mutually of motor of the present invention.Said number of motor phases m is 4 phases, and the V shape rotor magnetic poles that are installed in the rotor case 6 between said motor four phases align vertically; Motor stator four mutually between stator helical teeth 1/4 pole span of mutual deviation along the circumferential direction, make the output torque of motor not have zero point like this; Motor is arranged to the self-align torque of heterogeneous elimination motor that can be preferably, has reduced the pulsation of motor output torque.

The present invention has the V-arrangement air gap transverse magnetic field torque motor that fluid is forced cooling, and is separate between each phase of said motor, do not have the magnetic circuit coupling, and its number of phases m can increase according to the needs of output torque, and the m minimum value is 2, and maximum is 8.

Need explanation: the cooling fluid described in this paper is the fluid in the denomination of invention.

The beneficial effect of motor of the present invention comprise following some:

1. be formed with the V-arrangement air gap between the stator helical teeth of motor stator and rotor magnetic pole and the permanent magnet; Increase the air gap effective area, reduced the magnetic circuit magnetic resistance, reduced the leakage field of motor; Thereby increased the force density of motor, made that being worth expensive permanent magnet effect is well brought into play;

2. the fluid pressure cooling system of whole motor has guaranteed the heat radiation of motor, makes motor can export big moment;

3. the motor stator yoke of motor of the present invention and stator helical teeth are designed to an integral body, are easy to processing and manufacturing, and rotor adopts magnetism-collected structure, has increased air gap flux density;

4. the cross section of stator winding is trapezoidal, makes that the main magnetic circuit cross-sectional area is even, has effectively utilized the space.

5. the effective rate of utilization height owing to permanent magnet of the present invention has reduced the whole cost of motor.

The above is merely one embodiment of the present invention; It or not whole or unique execution mode; The conversion of any equivalence that those of ordinary skills take technical scheme of the present invention through reading specification of the present invention is claim of the present invention and contains.

Claims

1. A V-shaped air gap transverse field torque motor with fluid forced cooling, characterized in that: comprising:

A stator fixed shaft (2) is fixed on the motor bracket (1). The stator fixed shaft (2) is provided with a multi-phase motor stator. Each phase motor stator includes a stator winding (13), and two relative combinations. A stator core, the stator winding (13) is arranged between the relative stator cores, each stator core is composed of a motor stator yoke (8, 10) and a stator helical tooth (11, 12);

The rotor casing (6) is connected with the stator fixed shaft (2) through the first bearing (5, 17). The inner cavity of the rotor casing (6) is provided with a motor rotor, and the motor rotor is composed of rotor magnetic poles (9) and permanent Composed of magnets (29), the rotor poles (9) are evenly assembled in the rotor shell (6) along the circumferential direction, and the permanent magnets (29) are installed between adjacent rotor poles (9);

The motor rotating shaft (19) is arranged at the end of the stator fixed shaft (2) and fixedly connected with the rotor housing (6);

The motor shaft end support (15) is connected with the motor shaft (19) through the second bearing (16), wherein,

A V-shaped air gap (21) is formed between the stator helical teeth (11, 12) and the rotor poles (9) and permanent magnets (29); the stator helical teeth (11, 12) and the motor stator yoke (8, 10) form a whole body, and the stator helical teeth (11, 12) are evenly arranged on the oblique annular surface on the radially outer side of the motor stator yoke (8, 10) along the circumferential direction;

The stator helical teeth (11, 12) of the stator cores of each phase are staggered by a pole pitch in the direction of rotation of the motor, and a V-shaped annular space is formed on the radially outer side between a pair of stator cores of the stators of each phase. ; The rotor poles (9) and permanent magnets (29) are V-shaped in section perpendicular to the direction of rotation of the motor, and they are just accommodated in the aforementioned V-shaped annular space in cross section.

2. The V-shaped air gap transverse field torque motor with fluid forced cooling according to claim 1, characterized in that: the stator winding (13) is an annular coil structure with a trapezoidal cross section.

3. The V-shaped air gap transverse field torque motor with fluid forced cooling as claimed in claim 1, characterized in that: the permanent magnets (29) on both sides of the rotor pole (9) are formed on the rotor pole (9) Magnetically concentrated V-shaped rotor pole structure.

4. The V-shaped air gap transverse magnetic field torque motor with fluid forced cooling as claimed in claim 1, characterized in that: the outer sides of the two-phase motor stators positioned at both ends are respectively provided with sealed liquid left and right end caps (14, 7) , the stator fixed shaft (2) is respectively provided with upper and lower cooling liquid through-holes (27, 32) along the radial direction, and the stator fixed shaft (2) is respectively provided with the above-mentioned upper and lower cooling liquid through-holes ( 27, 32) The upper and lower coolant through-holes (4, 30) communicated, and the coolant flow is formed between adjacent motor stators and between the motor stators on both sides and their corresponding sealing liquid left and right end covers (14, 7) Cavity, the cooling liquid flow chamber communicates with the aforementioned upper and lower cooling liquid sub-through holes (27, 32) and the upper and lower cooling liquid general through holes (4, 30), and the upper and lower cooling liquid general through holes (4, 30) respectively extend to The end portion of the stator fixed shaft (2) is equipped with sealing screws (18,31) at the end portion of the cooling liquid total through hole (4,30) up and down.

5. the V-shaped air gap transverse field torque motor with fluid forced cooling as claimed in claim 4, is characterized in that: said coolant flow cavity comprises left coolant flow cavity (20), right coolant flow cavity ( 24), and an intermediate coolant flow cavity (23); the liquid seal left end cover (14) and its adjacent motor stator and the seal liquid right end cover (7) and its adjacent motor stator form the The left coolant flow chamber (20) and the right coolant flow chamber (24), and the intermediate coolant flow chamber (23) is formed between the motor stators, and the radially outer side of the intermediate coolant flow chamber (23) is provided with Liquid sealing ring (22).