CN103141011B - Fan electromotor and the air conditioner possessing this fan electromotor - Google Patents
Fan electromotor and the air conditioner possessing this fan electromotor Download PDFInfo
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- CN103141011B CN103141011B CN201080069416.9A CN201080069416A CN103141011B CN 103141011 B CN103141011 B CN 103141011B CN 201080069416 A CN201080069416 A CN 201080069416A CN 103141011 B CN103141011 B CN 103141011B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/066—Linear Motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Fan electromotor (100) comprises the rotor (10) of the peripheral part being located at blade part (20) and is configured in the stator (30) of outer circumferential side of rotor (10).Stator (30) comprises one group of stator (30a ~ 30c).Stator (30a) comprises the 1st tooth group configuring U phase tooth, V phase tooth and W phase tooth successively.Stator (30b) comprises the 2nd tooth group configuring V phase tooth, W phase tooth and U phase tooth successively.Stator (30c) comprises the 3rd tooth group configuring W phase tooth, U phase tooth and V phase tooth successively.The coil winding direction of each tooth group is equidirectional.Stator (30a) ~ stator (30c) is configured to, and the homophase tooth of tooth group is positioned at the position of the integral multiple separating 360 ° by electrical degree, and the coils connected in series be wrapped on the homophase tooth of stator (30a ~ 30c) connects.
Description
Technical field
The present invention relates to fan electromotor and the air conditioner possessing this fan electromotor.
Background technology
In air conditioner before, in order to make indoor set miniaturization and slimming, propose the structural scheme that fan unit adopts propeller type fan.This propeller type fan is provided with hub portion as pivot and blade part, and this blade part has the blade formed from hub portion towards outer circumferential side.The motor that blade part is rotated is located at hub portion.Therefore, motor mainly outer-rotor type, blade part is arranged on rotor-side (rotary side).Therefore, if when will increase motor, the size of the blade be configured in outside motor will be made to be restricted, block ventilation path.Therefore, there is the problem such as little, the fan power reduction of design freedom that can not get enough air quantity, blade part.In addition, if reduce the size of motor in order to ensure ventilation path, then there is the problem that motor own power reduces.
In order to address these problems, propose following fan electromotor, such as " be fixed with on stator substrate 20: bearing portion 21, this bearing portion 21 is configured with bush(ing) bearing 21a and thrust bearing 21b along the vertical direction; Main rotating part, this main rotating part has blade part 23, and this blade part 23 is integral with the rotating shaft 22 be rotatably bearing on this bearing portion 21; With ringshaped magnet 24, this ringshaped magnet 24 has the driving magnetic pole of 16 poles in the peripheral direction of this blade part 23.Blade part 23 is made up of the radial multiple blade centered by rotating shaft 22, and is formed by synthetic resin etc.In addition, on stator substrate 20, centralized configuration has the armature portion 27 be made up of lamination-type armature core 25 and armature coil 26, and above-mentioned lamination-type armature core 25 keeps 3 relative profiles of tooth of predetermined distance ground to become E font by with above-mentioned magnet 24.Above-mentioned armature coil 26 is wrapped on each tooth." (such as seeing patent documentation 1).This fan electromotor, due to be located at hub portion with motor structure compared with, hub portion can be reduced, so, can ventilation path be increased, blade can be made to be located near rotating shaft.So the design freedom of fan electromotor improves.In addition, this fan electromotor, due to can rotor radius be increased, so, large torque can be obtained, the raising of efficiency can be expected.
At first technical literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 8-298763 publication (paragraph 0010,0012, Fig. 1)
Summary of the invention
The problem that invention will solve
But, such fan electromotor (such as seeing patent documentation 1), although hub portion can be reduced, but, owing to stator to be configured in a part for fan periphery using U phase, V phase, W phase as group, therefore exist compared with the phase being configured in stator two ends (tooth), the magnetic resistance being configured in the phase of central authorities reduces, and produces the problem of magnetic unbalance.In addition, there is the unbalanced problem of electro-magnetic exciting force produced between stator and rotor in such fan electromotor (such as seeing patent documentation 1), and stator arrangement is being impossible by this problem in the general motor in the whole region of peritrochanteric constructs.Therefore, this fan electromotor (such as seeing patent documentation 1), also exists problem, the under powered problem of fan electromotor that torque ripple, noise and vibration etc. increase.
The present invention, for solving the problem and making, its objective is to provide and can eliminate each alternate magnetic unbalance and can improve again the fan electromotor of design freedom and possess the air conditioner of this fan electromotor.
Solve the technical scheme of problem
Fan electromotor of the present invention comprises: blade part; Three phase electric machine, three phase electric machine has the rotor of the peripheral part being located at blade part and is provided with the stator of tooth at inner peripheral surface across the outer circumferential side being configured in rotor with gap; Housing, housing is configured to the outer circumferential side of covering stator and rotor.Wherein, stator comprises the 1st stator, the 2nd stator and the 3rd stator of more than a group; 1st stator comprises at least one the 1st tooth group, and the 1st tooth group configures U phase tooth, V phase tooth and W phase tooth successively along the direction of rotation of rotor; 2nd stator comprises at least one the 2nd tooth group, and the 2nd tooth group configures V phase tooth, W phase tooth and U phase tooth successively along the direction of rotation of rotor; 3rd stator comprises at least one the 3rd tooth group, and the 3rd tooth group configures W phase tooth, U phase tooth and V phase tooth successively along the direction of rotation of rotor; For the 1st tooth group, the 2nd tooth group and the 3rd tooth group, the winding direction being wrapped in the coil on tooth is equidirectional, the homophase tooth that 1st stator, the 2nd stator and the 3rd stator are configured to tooth group is positioned at the position of the integral multiple separating 360 ° by electrical degree, is wrapped in the 1st stator, the 2nd stator is connected with the coils connected in series on the homophase tooth of the 3rd stator.
In addition, fan electromotor of the present invention, comprising: blade part; Three phase electric machine, three phase electric machine has the rotor of the peripheral part being located at blade part and is provided with the stator of tooth at inner peripheral surface across the outer circumferential side being configured in this rotor with gap; Housing, housing is configured to the outer circumferential side of covering stator and rotor.Wherein, stator comprises the 1st stator, the 2nd stator and the 3rd stator of more than a group; 1st stator comprises at least one the 1st tooth group, and the 1st tooth group configures U phase tooth, V phase tooth and W phase tooth successively along the direction of rotation of rotor; 2nd stator comprises at least one the 2nd tooth group, and the 2nd tooth group configures V phase tooth, W phase tooth and U phase tooth successively along the direction of rotation of rotor; 3rd stator comprises at least one the 3rd tooth group, and the 3rd tooth group configures W phase tooth, U phase tooth and V phase tooth successively along the direction of rotation of rotor.For a part of tooth group in the 1st tooth group, the 2nd tooth group and the 3rd tooth group, the winding direction being wrapped in the coil on tooth is the 1st direction; For the remainder in the 1st tooth group, the 2nd tooth group and the 3rd tooth group, the winding direction of coil is 2nd direction contrary with the 1st direction; 1st stator, the 2nd stator and the 3rd stator are configured to, the winding direction of coil is the tooth group in the 1st direction, tooth either in phase with one another is positioned at the position of the integral multiple separating 360 ° by electrical degree, the winding direction of coil is the tooth group in the 2nd direction, relative to the tooth group that the winding direction of coil is the 1st direction, tooth either in phase with one another is positioned at the position separating 360 ° × N+180 ° (N is integer) by electrical degree; Be wrapped in the 1st stator, the 2nd stator is connected with the coils connected in series on the homophase tooth of the 3rd stator, to make winding direction be direction of current flow in the coil in the 1st direction with winding direction to be the direction of current flow in the coil in the 2nd direction contrary.
Invention effect
In the present invention, by the 1st stator, the 2nd stator, the 3rd stator arrangement in assigned position, and the coils connected in series be wrapped on the homophase tooth of each stator is connected.Therefore, for each phase, be configured in the coil count that the tooth of stator end is wound around identical.In addition, for each phase, be configured in the coil count that the coil of the tooth beyond stator end is wound around identical.In addition, due to each mutually in these coils connected in series are connected, so the magnetic linkage of each phase is identical, the state of magnetic balance can be become.
Accompanying drawing explanation
Fig. 1 is the stereoscopic figure of the fan electromotor representing embodiment of the present invention 1.
Fig. 2 is the front view of the stator of the fan electromotor representing embodiment of the present invention 1.
Fig. 3 is the key diagram of one of method of attachment of the homophase tooth represented in the fan electromotor of embodiment of the present invention 1 example.
Fig. 4 is the front view of the fan electromotor representing embodiment of the present invention 2.
Fig. 5 is the front view of another example of the fan electromotor representing embodiment of the present invention 2.
Fig. 6 is the front view of the fan electromotor representing embodiment of the present invention 3.
Fig. 7 is the front view of the fan electromotor representing embodiment of the present invention 4.
Fig. 8 is the sectional arrangement drawing of an example of the air conditioner representing embodiment of the present invention 5.
Embodiment
Execution mode 1
Fig. 1 is the stereoscopic figure of the fan electromotor representing embodiment of the present invention 1.Fig. 2 is the front view of the stator representing this fan electromotor.In other words dotted arrow in Fig. 1 represents blade part 20(, rotor 10) direction of rotation.
Fan electromotor 100 is tube-axial fan structures, is made up of blade part 20, the motor 40 with rotor 10 and stator 30 and housing 50 etc.
Housing 50 is shaped as frame shapes of roughly quadrangle, and inner side is provided with blade part 20.
Blade part 20 has hub portion 22 and multiple blade 21.Hub portion 22 is pivots of blade part 20, forms blade 21 at its peripheral part.Roughly circular ring 23 is formed at the peripheral part of blade 21.Blade part 20(blade 21, hub portion 22 and ring 23) be such as integrated by resin material.In addition, be configured with rotating shaft in the inner side in hub portion 22 and be inserted into the bearing (not shown) of this rotating shaft.The peripheral part of this bearing is such as kept by housing 50.
In addition, the material forming blade part 20 is not limited to resin material, as long as have the material guaranteeing the rigidity of not being out of shape because of magnetic attraction (magnetic attraction between rotor 10 and stator 30), air drag etc., such as, the material forming blade part 20 also can be metal material etc.
The outer peripheral face of the ring 23 of blade part 20 is provided with rotor 10.This rotor 10 comprises magnet 11 and rotor core 12.Rotor core 12 is roughly circular, is located at the outer peripheral face of ring 23.Magnet 11 is roughly circular, is located at the outer peripheral face of rotor core 12.In addition, magnet 11 also can be the segment shape that each pole is separated, and can also be that interpolar is unmagnetized roughly circular.
Magnet 11 is such as thickness 1.5mm, relict flux density is the ferro-gum of 0.245T.In addition, this magnet 11 is writing board shapes, magnet 11 be oriented to common parallel magnetization, be geomagnetic into 32 poles.Magnet 11 reels and is bonded in the outer peripheral face of rotor core 12.In addition, in present embodiment 1, the axial width (width of the axial rotary of blade part 20) of magnet 11 is such as 10mm, consistent with the axial width of stator 30.
In addition, the kind of magnet 11, also can use rare-earth sintered magnet, plastic cement magnet, ferrite lattice etc.In addition, magnet 11 is also not limited to the method for present embodiment 1 to the method that rotor core 12 is fixing.Such as, also magnet 11 can be formed as roughly annular, rotor core 12 be embedded the inner peripheral surface of this magnet 11.In addition, such as, also can be magnet 11 is divided into multiple segment and these segments to be pasted onto the outer peripheral face of rotor core 12 first-class.When magnet 11 being divided into multiple segment, the circumferential width of each segment also can be made less than die opening, installation space between segment.In addition, such as, when blade part 20 high-speed rotary is rotatably used, also from the outside of magnet 11, can fix with the nonmagnetic substance of expoxy glass (glass fibre+epoxy resin) etc.In addition, such as, be not limited to segment shape, also with the resin material forming blade part 20, magnet 11(also can be comprised rotor core 12) imbed (two look shapings etc.).In addition, such as, the axial width of magnet 11 also can be made larger than the axial width of stator 30, make it give prominence to.Like this, magnetic flux can be suppressed from the leakage of the end of the axial side of stator 30.
Rotor core 12 is the structures stacked for electromagnetic steel plate joint being processed into ring-type.The material of rotor core 12, except electromagnetic steel plate, can also adopt dust core, other magnetic material.In addition, when the orientation of magnet 11 is formed as Halbach array orientation, because magnetic circuit does not enter into inner side (blade part 20 side), so, also rotor core 12 can not be set.Because rotor core 12 is magnetics, so, usual heavier-weight.Therefore, rotor core 12 can not be set and realize the lightweight of fan electromotor 100.In addition, when rotor 10 be out of shape because rigidity is not enough, produce noise time, rotor core 12 can be set, strengthen.
As shown in Figure 1, the stator 30 of present embodiment 1 comprises 3 stators (stator 30a, stator 30b, stator 30c).As shown in Figure 2, these each stators are same shapes.Specifically, each stator of stator 30 comprises the stator core 31 of roughly L-shaped.Two outer peripheral face angulations of stator core 31 are roughly the same angles (such as about 90 °) with the groove portion (Embedded Division) of the housing 50 installing stator 30.At the inner peripheral surface (face relative with blade part 20) of this stator core 31, be provided with tooth 32.The motor 40 of present embodiment 1 is three phase electric machine, so, be provided with 3 tooth 32(tooth 32a, tooth 32b, tooth 32c at the inner peripheral surface of stator core 31).These teeth 32a, tooth 32b, tooth 32c are wrapped coil (not shown).
At the both ends of stator core 31, be provided with auxiliary tooth 33 along inner peripheral surface side.Like this, when being energized to tooth 32a and tooth 32c, the newly-increased magnetic circuit be added with by auxiliary tooth 33.Therefore, in each stator 30a, stator 30b, stator 30c, the magnetic linkage of the phase of tooth 32a and tooth 32c can be increased, reduce the difference with the magnetic linkage of the phase of tooth 32b.In addition, although even if also can motor be formed when not assisting tooth 33, be provided with auxiliary tooth 33, more can suppress slot effect etc.
In the same manner as rotor core 12, each stator of stator 30 is electromagnetic steel plate is stacked and be processed into the shape shown in Fig. 2 with Linear cut etc.In addition, each stator of stator 30 also can use dust core, other magnetic material to be formed.
At this, in present embodiment 1, when each stator (stator 30a, stator 30b, stator 30c) of stator 30 is installed on housing, tooth 32a, the tooth 32b of each stator and tooth 32c, along the direction of rotation of rotor 10, according to the arranged in order of tooth 32a, tooth 32b, tooth 32c.Be located at the tooth 32a on each stator, tooth 32b mutually as described below with tooth 32c's.
For stator 30a, by coil winding on each tooth, to make, tooth 32a becomes U phase tooth 32U, tooth 32b becomes V phase tooth 32V, tooth 32c becomes W phase tooth 32W.In addition, for stator 30b, by coil winding on each tooth, to make, tooth 32a becomes V phase tooth 32V, tooth 32b becomes W phase tooth 32W, tooth 32c becomes U phase tooth 32U.In addition, for stator 30c, by coil winding on each tooth 32, to make, tooth 32a becomes W phase tooth 32W, tooth 32b becomes U phase tooth 32U, tooth 32c becomes V phase tooth 32V.
That is, in stator 30a, at the both sides of V phase tooth 32V configuration U phase tooth 32U and W phase tooth 32W.In stator 30b, at the both sides of W phase tooth 32W configuration V phase tooth 32V and U phase tooth 32U.In stator 30c, at the both sides of U phase tooth 32U configuration W phase tooth 32W and V phase tooth 32V.
In addition, stator 30a is equivalent to the 1st stator of the present invention, and stator 30b is equivalent to the 2nd stator of the present invention, and stator 30c is equivalent to the 3rd stator of the present invention.In addition, along the direction of rotation of rotor 10, tooth group according to the stator 30a of the arranged in order of U phase tooth 32U, V phase tooth 32V and W phase tooth 32W, the 1st tooth group in the present invention is equivalent to.Along the direction of rotation of rotor 10, tooth group according to the stator 30b of the arranged in order of V phase tooth 32V, W phase tooth 32W and U phase tooth 32U, be equivalent to the 2nd tooth group in the present invention.Along the direction of rotation of rotor 10, tooth group according to the stator 30c of the arranged in order of W phase tooth 32W, U phase tooth 32U and V phase tooth 32V, be equivalent to the 3rd tooth group in the present invention.
In present embodiment 1, for the 1st tooth group, the 2nd tooth group and the 3rd tooth group, the winding direction being wrapped in the coil on tooth 32 is equidirectional.In addition, be wrapped in the coil on the homophase tooth (i.e. the homophase tooth of stator 30a, stator 30b and stator 30c) of the 1st tooth group, the 2nd tooth group and the 3rd tooth group, such as, shown in Fig. 3, be connected in series with such as star-like connection.Be wrapped in the method for attachment of the coil on these homophase teeth, as long as be respectively be connected in series mutually, also can use such as triangle joint.In addition, " E " shown in Fig. 3 is such as 3 phase power supplys.
Form 3 positions that the stator 30a of these stators 30, stator 30b and stator 30c are located at housing 50.That is, housing 50 is configured to cover motor 40(rotor 10 and stator 30) outer circumferential side.When each stator of stator 30 is installed on housing 50, two outer peripheral faces of stator core 31 are abutted (contact) with the inner peripheral surface in the groove portion of housing 50.In addition, the back side of stator core 31 is made to abut (contact) with stage portion (not shown) projecting on the groove portion inner peripheral surface of housing 50.Like this, each stator of stator 30 is positioned in the groove portion of housing 50.In this condition, insert the (not shown) such as screw from fixing hole 34, each stator of stator 30 is fixed on the groove portion of housing 50.
Under the state in groove portion that each stator of stator 30 is fixed on housing 50, between the outer peripheral face of the leading section of the tooth 32a in each stator, tooth 32b, tooth 32c and auxiliary tooth 33 and the magnet 11 of rotor 10, form certain gap.
In addition, form 3 positions that the stator 30a of these stators 30, stator 30b and stator 30c are arranged on housing 50, become following state to make their each phase tooth.
That is, under the state of the q axle of rotor 10 position of rotation consistent with the center of the U phase tooth 32U of stator 30a, the q axle that stator 30b and stator 30c also become rotor 10 is consistent with the center of U phase tooth 32U.Similarly, under the state of the q axle of rotor 10 position of rotation consistent with the center of the V phase tooth 32V of stator 30a, the q axle that stator 30b and stator 30c also become rotor 10 is consistent with the center of V phase tooth 32V.In addition, similarly, under the state of the q axle of rotor 10 position of rotation consistent with the center of the W phase tooth 32W of stator 30a, the q axle that stator 30b and stator 30c also become rotor 10 is consistent with the center of W phase tooth 32W.
In other words, in present embodiment 1, the homophase tooth (i.e. the homophase tooth of stator 30a, stator 30b and stator 30c) of the 1st tooth group, the 2nd tooth group and the 3rd tooth group, is configured in the position of the integral multiple separating 360 ° by electrical degree.
(action specification)
In the fan electromotor 100 formed like this, the magnetic resistance (magnetic linkage) of each phase is as follows.
For stator 30a, along the direction of rotation of rotor 10, according to the order of U phase tooth 32U, V phase tooth 32V and W phase tooth 32W, configure each tooth 32.Therefore, because U phase-V is alternate and V phase-W is alternate, each tooth 32 is adjacent, so the magnetic resistance of magnetic circuit is little.On the other hand, due to alternate at U phase-W, the spaced far of tooth 32, so the magnetic resistance of magnetic circuit increases.Therefore, U phase tooth 32U and W phase tooth 32W, compared with V phase tooth 32V, magnetic resistance increases.Therefore, difference is created at the magnetic linkage of U phase tooth 32U and W phase tooth 32W with the magnetic linkage of V phase tooth 32V.
But, for stator 30b, along the direction of rotation of rotor 10, according to the order of V phase tooth 32V, W phase tooth 32W and U phase tooth 32U, configure each tooth 32, so V phase tooth 32V and U phase tooth 32U, compared with W phase tooth 32W, magnetic resistance increases.In addition, for stator 30c, along the direction of rotation of rotor 10, according to the order of W phase tooth 32W, U phase tooth 32U and V phase tooth 32V, configure each tooth 32, so W phase tooth 32W and V phase tooth 32V, compared with U phase tooth 32U, magnetic resistance increases.
Therefore, in the fan electromotor 100 of the present embodiment 1 that the coils connected in series on the homophase tooth (i.e. the homophase tooth of stator 30a, stator 30b and stator 30c) being wrapped in the 1st tooth group, the 2nd tooth group and the 3rd tooth group is connected, the magnetic resistance of each phase identical (that is, can make as a whole the magnetic linkage of each phase identical) can be made as a whole.
As mentioned above, in the fan electromotor 100 that present embodiment 1 is formed like this, due to the magnetic resistance of each phase can be made as a whole identical, so, each alternate magnetic unbalance can be eliminated.At this moment, owing to not adopting the measure of the sectional area of reduction tooth 32 etc., so, the value suitable with original magnetic resistance can be guaranteed.
In addition, in present embodiment 1, the 1st tooth group, the 2nd tooth group and the 3rd tooth group, the winding direction being wrapped in the coil on tooth 32 is equidirectional.But be not limited thereto, also can make the direction towards the opposite, coil winding direction of a part of tooth group.Such as, the coil of the 1st tooth group (namely, stator 30a) is wound around towards the 1st direction, the coil of the 2nd tooth group (namely, stator 30b) and the 3rd tooth group (namely, stator 30c) is wound around towards the 2nd direction contrary with the 1st direction.Like this, when the position of rotation that the center of the U phase tooth 32U of the q axle with stator 30b and stator 30c that become rotor 10 is consistent, the center that stator 30a can be configured to the U phase tooth of stator 30a is consistent with the q axle of rotor 10.That is, coil winding direction is the stator (tooth group) in the 2nd direction, is the stator (tooth group) in the 1st direction relative to coil winding direction, and the homophase tooth that can be configured to each other separates the position of 360 ° × N+180 ° (N is integer) by electrical degree.Like this, by selecting the coil winding direction of each stator (namely, each tooth group), the degree of freedom of the allocation position of stator can be improved.
At this moment, when the in-phase coil of the tooth group in the 2nd direction that to be the tooth group in the 1st direction and coil winding direction by coil winding direction be is connected in series, if make the sense of current that flows in the in-phase coil of each tooth group identical, then can reduce as magnetic linkage overall mutually.Therefore, when the in-phase coil of the tooth group in the 2nd direction that to be the tooth group in the 1st direction and coil winding direction by coil winding direction be is connected in series, as long as in-phase coil be connected in series to make winding direction to be direction of current flow and the winding direction of the coil in the 1st direction to be the direction of current flow of the coil in the 2nd direction contrary.Like this, can using as magnetic linkage overall mutually as number and (that is, magnetic linkage overall mutually can be made, identical with the magnetic linkage obtained when in-phase coil being connected in series under the coil winding direction of whole tooth group is the condition in a direction).
In addition, in present embodiment 1, not shown motor 40(rotor 10 and stator 30) slot fit, but the slot fit of motor 40 is not particularly limited.Such as, the slot fit of motor 40 can be 2:3,4:3,8:9 etc.In addition, the driving method of motor 40, also can adopt the driving method that vector majorization, 120 ° of energisings etc. are general.In addition, as the driving method of motor 40, also can be sensorless drive, as required, also can be that the transducer that has of the position transducers such as configuration Hall IC drives.
Execution mode 2
In execution mode 1, be form fan electromotor with one group of stator 30a, stator 30b and stator 30c.But also can form fan electromotor with many group stator 30a, stator 30b and stator 30c.In present embodiment 2, the fan electromotor 101 of employing two groups of stator 30a, stator 30b and stator 30c is described.In addition, in present embodiment 2, the project be not particularly illustrated, identical with execution mode 1.
Fig. 4 is the front view of the fan electromotor representing embodiment of the present invention 2.
The fan electromotor 101 of present embodiment 2 has 2 stator 30a, 2 stator 30b and 2 stator 30c.In addition, 2 stator 30a configure symmetrically relative to the rotating shaft of blade part 20.That is, 2 stator 30a are configured in position (centered by the rotating shaft of blade part 20, position each other have rotated the position of 180 °) in opposite directions.Stator 30b and stator 30c configures similarly.
In the fan electromotor 101 formed like this, owing to can make the magnetic attraction that produces between rotor 10 and stator 30 (in other words, electro-magnetic exciting force) balance, so, the torque ripple of motor 40 can be suppressed, noise etc. that the vibration of blade part 20 when rotating and blade part 20 produce when rotating.
In addition, in present embodiment 2, the coil winding direction of stator (such as stator 30a) of the same race is identical, but, also suitably can change the winding direction of coil.Like this, easily by stator (such as stator 30a) balanced configuration of the same race.
In addition, in present embodiment 2, be form fan electromotor 101 with two groups of stator 30a, stator 30b and stator 30c, but can certainly with stator 30a, the stator 30b of more than three groups and stator 30c formation fan electromotor.When forming fan electromotor with the stator 30b of more than three groups and stator 30c, except by except stator balanced configuration of the same race, also stator arrangement of the same race can be become regular polygon.Such as, when forming fan electromotor with the stator 30b of more than three groups and stator 30c, of the same race 3 stator arrangement can be become equilateral triangle.In addition, such as, when forming fan electromotor with the stator 30b of more than five groups and stator 30c, of the same race 5 stator arrangement can be become regular pentagon.Even if stator arrangement of the same race is become regular polygon, the magnetic attraction produced between rotor 10 and stator 30 also can be made to balance.
In addition, when forming fan electromotor with two groups of stator 30b and stator 30c as present embodiment 2 101 time, also can form fan electromotor 101 as shown in Figure 5.
Fig. 5 is the front view of another example of the fan electromotor representing embodiment of the present invention 2.
6 stator arrangement are become approximate regular hexagon, thus the shape of housing 50 are formed as regular hexagon by the fan electromotor 101 shown in Fig. 5.By like this housing 50 being formed as regular hexagon, when by multiple fan electromotor 101 two-dimensional arrangement, six side's solid matter configurations can be obtained.Therefore, the ratio of the configuration gross space fan area occupied (wind path area) at fan electromotor can be improved.Therefore, the characteristic of fan electromotor 101 entirety of configuration can be improved.
Execution mode 3
In the situation etc. of the multiple fan electromotor of configuration, consider the installation space etc. of fan electromotor, sometimes the shape of housing will be formed as rectangle.At this moment, such as, each stator (stator 30a, stator 30b, stator 30c) of stator 30 can be configured as follows.In addition, in present embodiment 3, the fan electromotor 102 of employing two groups of stator 30b and stator 30c is described.In addition, in present embodiment 3, the project be not particularly illustrated, identical with execution mode 1 or execution mode 2.
Fig. 6 is the front view of the fan electromotor representing embodiment of the present invention 3.
In the same manner as execution mode 2, the fan electromotor 102 of present embodiment 3 has 2 stator 30a, 2 stator 30b and 2 stator 30c.In addition, in the same manner as execution mode 2, the fan electromotor 102 of present embodiment 3, by stator balanced configuration of the same race.In addition, the fan electromotor 102 of present embodiment 3 makes the shape of housing 50 be rectangle.
Here, the q axle due to rotor has the amount corresponding to number of pole-pairs, so the position (position that the center of the such as V phase tooth 32V of each stator is consistent with the q axle of rotor) that can configure each stator of stator 30 has multiple.In addition, the coil winding direction of a part of stator forming stator 30 is formed as rightabout, like this, this stator also can be configured in the position that the center of such as V phase tooth 32V is consistent with the q axle of rotor, so the allocation position of each stator of stator 30 increases.
For this reason, in present embodiment 3, each stator is only configured in the short brink of housing 50.By configuring each stator of stator 30 like this, size can be used mostly to be the blade part 20(of the long limit spacing of housing 50 most in other words, rotor 10).In addition, stator 30a and stator 30c is located at the adjacent corner of housing 50, and in present embodiment 3, these adjacent corner are also referred to as short brink.
Usually, the shape of housing 50 be rectangle and length-width ratio is large time, at short brink (length direction of housing 50), can guarantee there is larger space outside blade part 20.But at long side (short side direction of housing 50), the space outside blade part 20 is little.Therefore, if the configuration space of stator will be guaranteed at the long side of housing 50 (short side direction of housing 50), just must reduce blade part 20(in other words, rotor 10) diameter, like this, the fan duty of air quantity etc. reduces.But the fan electromotor 102 of present embodiment 3, is only configured in the short brink of housing 50 by each stator of stator 30, so can avoid the problems referred to above.
In addition, in present embodiment 3, because magnet 11 is 32 poles, so q shaft position is 16 positions (when comprising-q axle, being 32 positions).When the number of poles of magnet 11 is increased, q shaft position also increases, and its direction of rotation interval also reduces, so, blade part 20(in other words, rotor 10) can more reduce with the distance of the long side of housing 50.
In addition, in present embodiment 3, describe the fan electromotor 102 of employing two groups of stator 30b and stator 30c, but its group number is arbitrary.By each stator of stator 30 being only configured in the short brink of housing 50, blade part 20(can be reduced in other words, rotor 10) with the distance of housing 50 long side, can prevent the fan duty of air quantity etc. from reducing.
Execution mode 4
In execution mode 1 ~ execution mode 3, a stator is configured with a tooth group.But be not limited thereto, on a stator, multiple tooth group of the same race can certainly be configured.In addition, in present embodiment 3, the project be not particularly illustrated, identical with execution mode 1 ~ execution mode 3.
Fig. 7 is the front view of the fan electromotor representing embodiment of the present invention 4.In other words dotted arrow in Fig. 7 represents blade part 20(, rotor 10) direction of rotation.
In the same manner as execution mode 1, the fan electromotor 103 of present embodiment 4 has one group of stator 30d, stator 30e and stator 30f.In addition, the allocation position of stator 30d, stator 30e and stator 30f is identical with the allocation position of stator 30c with the stator 30a in execution mode 1, stator 30b.
But, in present embodiment 4, each stator of stator 30 is provided with multiple tooth group (in present embodiment 4 being 2).More particularly, stator 30d is provided with 2 the 1st tooth groups.That is, stator 30d, along the direction of rotation (clockwise direction in Fig. 7) of rotor 10, is provided with such 6 teeth 32 of U phase tooth 32U, V phase tooth 32V, W phase tooth 32W, U phase tooth 32U, V phase tooth 32V and W phase tooth 32W.In addition, stator 30e is provided with 2 the 2nd tooth groups.That is, stator 30e, along the direction of rotation (clockwise direction in Fig. 7) of rotor 10, is provided with such 6 teeth 32 of V phase tooth 32V, W phase tooth 32W, U phase tooth 32U, V phase tooth 32V, W phase tooth 32W and U phase tooth 32U.In addition, stator 30f is provided with 2 the 3rd tooth groups.That is, stator 30f, along the direction of rotation (clockwise direction in Fig. 7) of rotor 10, is provided with such 6 teeth 32 of W phase tooth 32W, U phase tooth 32U, V phase tooth 32V, W phase tooth 32W, U phase tooth 32U and V phase tooth 32V.
In addition, be located at each tooth 32 on stator 30d, stator 30e and stator 30f, in the same manner as execution mode 1, each homophase tooth is connected in series.
Like this, by arranging multiple tooth group of the same race on a stator, compared with when a stator being arranged a tooth group, each alternate magnetic unbalance can more be reduced.In addition, in the same manner as execution mode 1, because each tooth 32 is be connected in series by each homophase tooth, so, more can reduce each alternate magnetic unbalance.
In addition, the number being located at the tooth group of the same race on a stator is not limited to 2, can certainly be more than 3.But, be located at the number of the tooth group of the same race on a stator too much time, will become with stator arrangement at the same structure of the fan electromotor before that peritrochanteric is whole, lose by stator arrangement at housing 50 and blade part 20(in other words, rotor 10) gap in and effectively utilize the advantage in space.
Execution mode 5
In present embodiment 5, the example fan electromotor shown in execution mode 1 ~ execution mode 4 being used for air conditioner is described.
Fig. 8 is the sectional arrangement drawing of an example of the air conditioner representing embodiment of the present invention 5.This Fig. 8 represents the example of the indoor set 200 fan electromotor 100 of execution mode 1 being used for air conditioner.In addition, in fig. 8, the left side of figure represents the front face side of indoor set 200.Below, the structure of indoor set 200 is described with reference to Fig. 8.
As the fan electromotor of indoor set 200, the fan electromotor shown in execution mode 2 ~ execution mode 4 can certainly be adopted.
Indoor set 200 utilizes the freeze cycle making refrigerant circulation, Air Conditioning is supplied to indoor etc. air-conditioning subject area.This indoor set 200 mainly contains casing 110, fan electromotor 100 and heat exchanger 114.Define for room air being drawn into the suction inlet 111 of inside and being used for Air Conditioning to be supplied to the blow-off outlet 115 of air-conditioning subject area at casing 110.Fan electromotor 100 is accommodated in this casing 110, sucks room air from suction inlet 111, blows out Air Conditioning from blow-off outlet 115.Heat exchanger 114 is disposed in from suction inlet 111 to the wind path of fan electromotor 100, makes cold-producing medium and room air carry out heat exchange and produce Air Conditioning.
Suction inlet 111 is opened in the top of casing 110.Blow-off outlet 115 be opened in casing 110 bottom (more particularly, be casing 110 front face on the downside of).Fan electromotor 100 is disposed in the downstream of suction inlet 111 and is disposed in the upstream side of heat exchanger 114.In addition, fan electromotor 100 is provided with such as 3 side by side in the direction vertical with drawing.Arranging of fan electromotor 100 counts only as an example.That suitably can change fan electromotor 100 according to required air quantity etc. arranges number.
Heat exchanger 114 is configured in the downwind side of fan electromotor 100.This heat exchanger 114 is made up of the front face side heat exchanger 114a of front face side and the rear side heat exchanger 114b of the rear side that is configured in casing 110 being configured in casing 110.This heat exchanger 114 such as can adopt fin tube type heat exchanger etc.In addition, grid 112, filter 113 is provided with at suction inlet 111.Be provided with the mechanism controlling air-flow blow-off direction at blow-off outlet 115, such as, scheme the impeller etc. do not shown.
Below, the flowing of the air in simple declaration indoor set 200.
First, room air, by fan electromotor 100, flows in indoor set 200 from the suction inlet 111 being formed in casing 110 top.At this moment, contained in air dust is removed by filter 113.This room air, when by heat exchanger 114, is become Air Conditioning by the refrigerant heat of flowing in heat exchanger 114 or cooling.Air Conditioning is blown out to the outside of indoor set 200 from the blow-off outlet 115 being formed in casing 110 bottom, i.e. air-conditioning subject area.
Indoor set 200(air conditioner forming like this) in, adopt the fan electromotor 100 shown in execution mode 1.Compared with being connected to the fan electromotor on the propeller boss of blade part or the fan electromotor of stator arrangement before in the whole peripheral part region of blade part with motor before, this fan electromotor 100 can realize slimming, can increase the area of blade 21.Therefore, the indoor set 200 of present embodiment 5 can than indoor set slimming before, miniaturization.In addition, when making the indoor set 200 of present embodiment 5 by the size same with indoor set before, the indoor set that air quantity is larger than indoor set before can be obtained.
In addition, the indoor set 200(air conditioner forming like this) in, adopt the fan electromotor 100 shown in execution mode 1.Therefore, compared with being equipped with stator and being located at the indoor set of the motor before in a part for the peripheral part of blade part, noise and vibration etc. can be prevented.
In addition, in present embodiment 5, fan electromotor 100 is configured in the weather side of heat exchanger 114, but, also fan electromotor 100 can be configured in the downwind side of heat exchanger 114.
The explanation of Reference numeral
10 ... rotor, 11 ... magnet, 12 ... rotor core, 20 ... blade part, 21 ... blade, 22 ... hub portion, 23 ... ring, 30 ... stator, 30a ~ 30f ... stator, 31 ... stator core, 32 ... tooth, 32a ... tooth, 32b ... tooth, 32c ... tooth, 32U ... U phase tooth, 32V ... V phase tooth, 32W ... W phase tooth, 33 ... auxiliary tooth, 34 ... fixing hole, 40 ... motor, 50 ... housing, 100 ~ 103 ... fan electromotor, 110 ... casing, 111 ... suction inlet, 112 ... grid, 113 ... filter, 114 ... heat exchanger, 114a ... front face side heat exchanger, 114b ... rear side heat exchanger, 115 ... blow-off outlet, 200 ... indoor set (air conditioner).
Claims (8)
1. a fan electromotor, this fan electromotor comprises:
Blade part;
Three phase electric machine, above-mentioned three phase electric machine has the rotor of the peripheral part being located at above-mentioned blade part and is provided with the stator of tooth at inner peripheral surface across the outer circumferential side being configured in this rotor with gap;
Housing, above-mentioned housing is configured to the outer circumferential side covering said stator and above-mentioned rotor;
It is characterized in that,
Said stator comprises the 1st stator, the 2nd stator and the 3rd stator of more than one group;
Above-mentioned 1st stator comprises at least one the 1st tooth group, and the 1st tooth group configures U phase tooth, V phase tooth and W phase tooth successively along the direction of rotation of above-mentioned rotor;
Above-mentioned 2nd stator comprises at least one the 2nd tooth group, and the 2nd tooth group configures V phase tooth, W phase tooth and U phase tooth successively along the direction of rotation of above-mentioned rotor;
Above-mentioned 3rd stator comprises at least one the 3rd tooth group, and the 3rd tooth group configures W phase tooth, U phase tooth and V phase tooth successively along the direction of rotation of above-mentioned rotor;
For the above-mentioned tooth group of a part in above-mentioned 1st tooth group, above-mentioned 2nd tooth group and above-mentioned 3rd tooth group, the winding direction being wrapped in the coil on tooth is the 1st direction;
For the remainder in above-mentioned 1st tooth group, above-mentioned 2nd tooth group and above-mentioned 3rd tooth group, the winding direction of above-mentioned coil is 2nd direction contrary with above-mentioned 1st direction;
Above-mentioned 1st stator, above-mentioned 2nd stator and above-mentioned 3rd stator are configured to,
The winding direction of above-mentioned coil is the above-mentioned tooth group in above-mentioned 1st direction, and tooth either in phase with one another is positioned at the position of the integral multiple separating 360 ° by electrical degree,
The winding direction of above-mentioned coil is the above-mentioned tooth group in above-mentioned 2nd direction, is the above-mentioned tooth group in above-mentioned 1st direction relative to the winding direction of above-mentioned coil, and tooth either in phase with one another is positioned at the position separating 360 ° × N+180 ° by electrical degree, and wherein, N is integer;
Be wrapped in above-mentioned 1st stator, above-mentioned 2nd stator is connected with the above-mentioned coils connected in series on the homophase tooth of above-mentioned 3rd stator, to make winding direction be direction of current flow in the above-mentioned coil in above-mentioned 1st direction with winding direction to be the direction of current flow in the above-mentioned coil in above-mentioned 2nd direction contrary.
2. fan electromotor as claimed in claim 1, is characterized in that,
Said stator comprises the 1st stator, the 2nd stator and the 3rd stator of more than 2 groups;
Above-mentioned 1st stator, above-mentioned 2nd stator and above-mentioned 3rd stator are configured to, and said stator of the same race is relative to the axisymmetry of above-mentioned blade part.
3. fan electromotor as claimed in claim 1 or 2, is characterized in that,
Above-mentioned housing is rectangle,
Above-mentioned 1st stator, above-mentioned 2nd stator and an above-mentioned 3rd stator centralized configuration are at the short brink of above-mentioned housing.
4. fan electromotor as claimed in claim 1 or 2, is characterized in that,
Said stator comprises 2 group of the 1st stator, the 2nd stator and the 3rd stator,
Above-mentioned housing is regular hexagon.
5. fan electromotor as claimed in claim 1, is characterized in that,
Said stator comprises the 1st stator, the 2nd stator and the 3rd stator of more than 3 groups;
Above-mentioned 1st stator, above-mentioned 2nd stator and above-mentioned 3rd stator are configured to, and said stator of the same race is regular polygon.
6. fan electromotor as claimed in claim 1 or 2, is characterized in that,
Above-mentioned 1st stator comprises the above-mentioned 1st tooth group of more than 2;
Above-mentioned 2nd stator comprises the above-mentioned 2nd tooth group of more than 2;
Above-mentioned 3rd stator comprises the above-mentioned 3rd tooth group of more than 2.
7. the fan electromotor as described in any one of claim 1 or 2, is characterized in that,
At least one in above-mentioned 1st stator, above-mentioned 2nd stator and above-mentioned 3rd stator, is provided with auxiliary tooth in end.
8. an air conditioner, is characterized in that, this air conditioner comprises:
Casing, above-mentioned casing is formed with the suction inlet for being absorbed by room air and is used for Air Conditioning to be supplied to the blow-off outlet of air-conditioning subject area;
Fan electromotor, said fans motor is accommodated in the fan electromotor recorded any one of the claim 1 to 7 in above-mentioned casing;
Heat exchanger, above-mentioned heat exchanger is accommodated in above-mentioned casing, carries out heat exchange and become above-mentioned Air Conditioning to above-mentioned room air.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/005987 WO2012046274A1 (en) | 2010-10-06 | 2010-10-06 | Fan motor and air conditioner provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103141011A CN103141011A (en) | 2013-06-05 |
| CN103141011B true CN103141011B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080069416.9A Expired - Fee Related CN103141011B (en) | 2010-10-06 | 2010-10-06 | Fan electromotor and the air conditioner possessing this fan electromotor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5484586B2 (en) |
| CN (1) | CN103141011B (en) |
| WO (1) | WO2012046274A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10170946B2 (en) | 2015-02-02 | 2019-01-01 | Persimmon Technologies Corporation | Motor having non-circular stator |
| CN110594175A (en) * | 2019-10-25 | 2019-12-20 | 深圳市高斯轨道交通有限公司 | Shaftless fan |
| IT202200002807A1 (en) * | 2022-02-16 | 2023-08-16 | Denso Thermal Systems Spa | Flux reversal permanent magnet electric machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1820166A (en) * | 2004-03-25 | 2006-08-16 | 三菱电机株式会社 | Air conditioner |
| CN101431269A (en) * | 2007-11-07 | 2009-05-13 | 本田技研工业株式会社 | Outer rotor type multipolar generator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0387004U (en) * | 1989-12-14 | 1991-09-04 | ||
| JP4600860B2 (en) * | 2001-05-18 | 2010-12-22 | 株式会社安川電機 | Permanent magnet synchronous motor |
| JP4248400B2 (en) * | 2001-10-10 | 2009-04-02 | 株式会社ミツバ | Winding structure of rotating electrical machine |
| JP2004166483A (en) * | 2002-09-27 | 2004-06-10 | Nippon Densan Corp | Recording disk driving motor and recording disk drive having the same |
| JP4909111B2 (en) * | 2007-02-14 | 2012-04-04 | 株式会社日立産機システム | Fan system |
| JP2009156559A (en) * | 2007-12-27 | 2009-07-16 | Toshiba Carrier Corp | Indoor unit for air conditioner |
-
2010
- 2010-10-06 JP JP2012537491A patent/JP5484586B2/en active Active
- 2010-10-06 WO PCT/JP2010/005987 patent/WO2012046274A1/en active Application Filing
- 2010-10-06 CN CN201080069416.9A patent/CN103141011B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1820166A (en) * | 2004-03-25 | 2006-08-16 | 三菱电机株式会社 | Air conditioner |
| CN101431269A (en) * | 2007-11-07 | 2009-05-13 | 本田技研工业株式会社 | Outer rotor type multipolar generator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012046274A1 (en) | 2012-04-12 |
| CN103141011A (en) | 2013-06-05 |
| JP5484586B2 (en) | 2014-05-07 |
| JPWO2012046274A1 (en) | 2014-02-24 |
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