CN101093945B - Rotor and manufacturing method thereof, enclosed type compressor and refrigeration circulating apparatus - Google Patents
Rotor and manufacturing method thereof, enclosed type compressor and refrigeration circulating apparatus Download PDFInfo
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- CN101093945B CN101093945B CN200710005323XA CN200710005323A CN101093945B CN 101093945 B CN101093945 B CN 101093945B CN 200710005323X A CN200710005323X A CN 200710005323XA CN 200710005323 A CN200710005323 A CN 200710005323A CN 101093945 B CN101093945 B CN 101093945B
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Abstract
The present invention aims to provide a rotor capable of lowering noise generated by magnet vibration, with lower speed to run. It is characterized in that it has rotor iron core (21), a plurality of magnetic insertion holes (22), thin wall part (41) and permanent magnet (24). The rotor iron core (21) is formed by punching and laminating thin plate electromagnetic steel boards; a plurality of magnetic insertion holes (22) is arranged at internal side of the rotor iron core (21) peripheral surface, extending peripheral; the thin wall part (41) is adjacent with the magnetic insertion holes (22), forming along with axial, and at least one part of the axial part forms with making magnetic insertion holes (22) radial width narrow mode; the permanent magnet (24) is pressed into the magnetic insertion holes (22) radial width narrowing part.
Description
Technical field
The present invention relates to use the rotor of permanent magnet and manufacture method, hermetic compressor and the refrigerating circulatory device of rotor.
Background technology
The high efficiency hermetic compressor that is used for kind of refrigeration cycle uses following method, and promptly electric element uses permanent magnet is arranged on epitrochanterian brushless DC motor, by having the dedicated control device of converter, utilizes Frequency Adjustable to turn round.
Usually, the rotor that permanent magnet is set generally is following structure, promptly carries out the punching press lamination at the electromagnetic steel plate to thin plate and on the rotor core that forms magnet insertion holes is set, and makes permanent magnet and rotor core carry out matched in clearance.
And because the circulation that compressing member compresses repeatedly, absorbs, load torque changes in a circulation.Therefore,, rotate the vibration increase that irregular (returning translocation system ラ) produces, decide the frequency that can turn round by the limiting value of vibrating because low-speed running inertia is weak more.Use recently the technology that is called as torque control, more low speed rotation turns round, this torque control be according to this load torque produce electric element torque, suppress to rotate irregular.
But, it is difficult carrying out optimal torque control in whole operating range zone, surpassing optimal point in torque control becomes under the situation of superfluous state, even with the degree of vibration suppression in abundant necessity, be arranged on magnet in the magnet insertion holes of rotor core is encouraged to the front and back of rotation direction and is shaken with matched in clearance, sometimes produce noise, be difficult to turn round with low frequency.
Can prevent the vibration of this magnet effectively by fixed magnet, the fixing means of magnet has the motion (for example with reference to patent documentation 1) that utilizes addition portion part fixed permanent magnet.
And, have by projection is arranged in the magnet insertion holes of rotor core, be pressed into that permanent magnet makes the projection plastic deformation and the motion (for example with reference to patent documentation 2) fixed.
Patent documentation 1: the real flat 9-182334 communique (Fig. 1) of opening of Japan
Patent documentation 2: Japanese kokai publication hei 5-219668 communique (Fig. 2)
Shown in patent documentation 1, the method that the parts fixed permanent magnet is added in utilization has following problem, has promptly increased the cost that adds the parts part, and increase in man-hour, cost increase when assembling.
And the method that shown in patent documentation 2, projection is set in the magnet insertion holes of rotor core, is pressed into permanent magnet has following problem, promptly in order to improve the insertion of magnet, big chamfering need be set on magnet, and this has not only increased processing cost, also can weaken the magnetic force of magnet.
Summary of the invention
The present invention forms in order to address the above problem, and purpose provides the noise that reduces the magnet vibration and produce, the rotor of more low speed ground running and manufacture method and the hermetic compressor and the refrigerating circulatory device of rotor.
The feature of rotor of the present invention is to have: rotor core, a plurality of magnet insertion holes, deformable thinner wall section and permanent magnet, rotor core carry out the punching press lamination with the thin plate electromagnetic steel plate and form; A plurality of magnet insertion holes are arranged on the inboard of this rotor core outer peripheral face, in circumferential extension; Deformable thinner wall section is adjacent with this magnet insertion holes, form vertically, simultaneously, an axial at least part so that the mode that the radial width of magnet insertion holes narrows down form; Permanent magnet is pressed in the part that the described radial width of described magnet insertion holes narrows down.
Rotor of the present invention is according to above-mentioned formation, has the vibration that can prevent magnet, reduces noise, with the effect of lower speed running.
In addition, the invention provides a kind of manufacture method of rotor, this rotor has: rotor core, a plurality of magnet insertion holes, thinner wall section and permanent magnet, described rotor core carry out the punching press lamination with the thin plate electromagnetic steel plate and form; Described a plurality of magnet insertion holes is arranged on the inboard of this rotor core outer peripheral face, in circumferential extension; Described thinner wall section and this magnet insertion holes is adjacent, form vertically; Described permanent magnet is inserted in the described magnet insertion holes, the method of the manufacturing of this rotor is characterised in that, described permanent magnet is inserted before the described magnet insertion holes, make described thinner wall section distortion, make axial at least a portion radial width of described magnet insertion holes narrow down, described permanent magnet is pressed into described magnet insertion holes.
In addition, the invention provides a kind of manufacture method of rotor, this rotor has: rotor core, a plurality of magnet insertion holes, thinner wall section and permanent magnet, described rotor core carry out the punching press lamination with the thin plate electromagnetic steel plate and form; Described a plurality of magnet insertion holes is arranged on the inboard of this rotor core outer peripheral face, in circumferential extension; Described thinner wall section and this magnet insertion holes is adjacent, form vertically, and side-prominent to described magnet insertion holes; Described permanent magnet is inserted in the described magnet insertion holes, the method of the manufacturing of this rotor is characterised in that, before described permanent magnet is inserted described magnet insertion holes, make to the side-prominent thinner wall section of described magnet insertion holes and be out of shape to the inboard of rotor core, expand the radial width of axial at least a portion of described magnet insertion holes, described permanent magnet is inserted described magnet insertion holes.
In addition, the invention provides a kind of manufacture method of rotor, this rotor has: rotor core, a plurality of magnet insertion holes, thinner wall section and permanent magnet, described rotor core carry out the punching press lamination with the thin plate electromagnetic steel plate and form; Described a plurality of magnet insertion holes is arranged on the inboard of this rotor core outer peripheral face, in circumferential extension; Described thinner wall section and this magnet insertion holes is adjacent, form vertically; Described permanent magnet is inserted in the described magnet insertion holes, and the method for the manufacturing of this rotor is characterised in that, is divided into described rotor core a plurality of; For divided each rotor core, before described permanent magnet is inserted described magnet insertion holes, make described thinner wall section distortion, the radial width of axial at least a portion of described magnet insertion holes is narrowed down; Divided each rotor core of lamination; Described permanent magnet is pressed into described magnet insertion holes.
The present invention also provides a kind of hermetic compressor with described rotor.
The present invention also provides a kind of refrigerating circulatory device with described hermetic compressor.
Description of drawings
Fig. 1 is the cutaway view of the hermetic compressor 37 of expression first execution mode.
Fig. 2 is the A-A cutaway view of Fig. 1 of expression first execution mode.
Fig. 3 is near the enlarged drawing the ventilation hole 40 of rotor core 21 of expression first execution mode.
Fig. 4 is the B-B cutaway view of Fig. 2 of expression first execution mode.
Fig. 5 is the block diagram of control device 30 of the control hermetic compressor 37 of expression first execution mode.
Fig. 6 is the pulsation figure of compression torque of the hermetic compressor 37 of expression first execution mode.
Fig. 7 is the distortion process chart of thinner wall section 41 of the rotor core 21 of expression second execution mode.
Fig. 8 is the refrigerant loop diagram of the air conditioner of expression the 3rd execution mode.
Fig. 9 is the figure of expression the 4th execution mode, is used for illustrating the permanent magnet 24 operating actions of the rotor 11 of first execution mode.
Figure 10 is near the enlarged drawing the ventilation hole 40 of rotor core 21 of expression the 4th execution mode.
Figure 11 is the figure of distortion operation of thinner wall section 41 of the rotor core 21 of expression the 4th execution mode.
Figure 12 is the figure of permanent magnet 24 operating actions of the rotor 11 of explanation the 4th execution mode.
Figure 13 is the distortion operation of thinner wall section 41 of rotor core 21 of expression the 5th execution mode and the figure that is pressed into operation of permanent magnet 24.
Figure 14 is the figure of permanent magnet 24 operating actions of the rotor 11 of explanation the 5th execution mode.
Figure 15 is the distortion operation of thinner wall section 41a, 41b of rotor core 21a, 21b of expression the 6th execution mode and the figure that is pressed into operation of permanent magnet 24.
Embodiment
First execution mode
Fig. 1 to Fig. 6 is the figure of expression first execution mode, Fig. 1 is the cutaway view of expression hermetic compressor 37, Fig. 2 is the A-A cutaway view of presentation graphs 1, Fig. 3 is near the enlarged drawing the ventilation hole 40 of expression rotor core 21, Fig. 4 is the B-B cutaway view of presentation graphs 2, Fig. 5 is the block diagram of the control device 30 of expression control hermetic compressor 37, and Fig. 6 is the pulsation figure of the compression torque of expression hermetic compressor 37.
Utilize Fig. 1 that the integral body formation of hermetic compressor 37 is described.With the single cylinder Rotary Compressor is that example describes hermetic compressor 37.Hermetic compressor 37 is housed in the compressing member 2 of compression refrigerant and the electric element 3 of this compressing member 2 of driving in the airtight container 1 that is made of upper container 1a and bottom container 1b.Compressing member 2 is connected by bent axle 4 with electric element 3, and compressing member 2 is housed in the bottom of airtight container 1, the top that electric element 3 is housed in airtight container 1.
Compressing member 2 will be contained in the cylinder 5 with the chimeric rotary plunger 9 of the eccentric part 8 of bent axle 4, and radially an end of the no illustrated blade that moves back and forth in the groove on being arranged at cylinder 5 one side simultaneously forms discharge chambe with the periphery butt of rotary plunger 9.The axial openings at two ends portion of cylinder 5 is by base bearing 6 and supplementary bearing 7 sealings.
Below electric element 3 is described, except Fig. 1, also simultaneously describe with reference to Fig. 2 to Fig. 4.Electric element 3 has stator 10 and rotor 11, is brushless DC motor for example.Stator 10 has stator core 13, insulating element 15, copper cash 16 and terminal.Stator core 13 constitutes the stator chip lamination of the electromagnetic steel plate punching press formation of thin plate; Insulating element 15 axially be divided into two chimeric with a plurality of tooth 13a of portion of the internal side diameter that is formed on stator core 13; Copper cash 16 has the dielectric film that is wound on this insulating element 15; Terminal is connecting between the copper cash 16 or copper cash 16 and lead 17 on this insulating element 15.
In addition, for example circular ventilation hole 40 that is arranged on the radially inner side of magnet insertion holes 22 is provided with one at least with respect to magnet insertion holes 22.Ventilation hole 40 original effects are to guide to the top of airtight container 1 from the cold media gas that compressing member 2 is discharged, and simultaneously, make the refrigerating machine oil on the top that is directed into airtight container 1 flow to the bottom of airtight container 1 with cold media gas.As shown in Figure 3, the ventilation hole 40 of present embodiment has and makes its part to the side-prominent protuberance 40c of magnet insertion holes 22.In addition, also formed the ventilation hole 45 that does not have protuberance 40c.Between magnet insertion holes 22 and protuberance 40c, thinner wall section 41 is set.The concrete structure of this thinner wall section 41 can form the radial width that makes magnet insertion holes 22 part less than the thickness of permanent magnet 24 before inserting permanent magnet 24 as described later, permanent magnet 24 is pressed into magnet insertion holes 22 fixes.Thinner wall section 41 is adjacent to be arranged on radially inner side with magnet insertion holes 22, still, and also can be in abutting connection with being arranged on radial outside or side.
As shown in Figure 4; thinner wall section 41 becomes upper end when being assembled into rotor core 21 in the hermetic compressor 37; and on being equipped with between the ventilation hole 40 and magnet insertion holes 22 of counterweight 25a side; this thinner wall section 41 in radially outside distortion, part or all forms taper, the radial width of this part is less than the thickness of permanent magnet 24.And, permanent magnet 24 is pressed into this part, thereby permanent magnet 24 is fixed on the rotor core 21.In the present embodiment, make thinner wall section 41 distortion, make a part form taper, make another part and axially parallel.This is when for the height at permanent magnet 24 deviation being arranged, and prevents from because of excessively pushing permanent magnet 24 permanent magnet 24 to be broken.And, in the present embodiment, and magnet insertion holes 22 between form thinner wall section 41 ventilation hole 40 have 6, but in Fig. 4, only represented two ventilation holes 40 wherein.
The internal diameter of rotor core 21 is less than the external diameter of bent axle 4, and rotor core 21 hot chargings are fixed on the main shaft 4a of bent axle 4.
As shown in Figure 1, the reservoir 27 of setting and airtight container 1 adjacency, storaging liquid refrigerant, reservoir 27 is connected with cylinder 5 by suction connection 28.
The cold media gas of compression is discharged in airtight container 1 in cylinder 5, sends to refrigerating circulatory device from discharge pipe 29 by electric element 3.
As shown in Figure 5, the control device 30 of control hermetic compressor 37 has with single-phase or socket that three-phase alternating-current supply is connected 34 operational part 36 of the phase place of the compressor operation current sensing means 35 of revolution electric current of the converter portion 33 from driving voltages to hermetic compressor 37, the detection hermetic compressor 37 that connect and carry out the rectifier portion 32 of rectification, supply with and computing stator 10 and rotor 11.
Below action is described.Single-phase or the three-phase alternating current of supplying with from socket 34 is pressed in rectifier portion 32 and carries out rectification, use PWM in converter portion 33, PAM or this two kinds of modulation systems are modulated, by from the information that is arranged on the compressor operation current sensing means 35 in the control device 30 and to be stored in the electric element 3 that the conduct in the control device 30 will drive in advance be the induced voltage constant or the d axle inductance of motor, q axle inductance, the wire resistor value, the information that electric elements such as torque constant are intrinsic, in operational part 36, calculate the phase place of rotor 11 and stator 10, on the opportunity that is suitable for driving most voltage is supplied with to hermetic compressor 37 by converter portion 33.
Make electric current flow in copper cash 16 by the voltage of supplying with to hermetic compressor 37, the magnetic field that electric current produces has formed the closed-loop path of passing stator core 13 and rotor core 21.Owing to make magnetic field service voltage rotationally, therefore, rotor 11 utilizes the magnetic force and the reluctance torque of the permanent magnet 24 of rotor 11 that bent axle 4 is rotated.
By the rotational motion of bent axle 4, in cylinder 5, carry out rotational motion with the chimeric rotary plunger 9 of the eccentric part 8 of bent axle 4.Like this, cold media gas is drawn in the cylinder 5 by suction connection 28 from reservoir 27, the refrigerant that is inhaled in the cylinder 5 flows out to refrigerating circulatory device from the discharge pipe 29 that is arranged on airtight container 1 top after overcompression.
In the hermetic compressor 37 (single cylinder Rotary Compressor) of running like this, bent axle 4 once sucks respectively and compression section when rotating a circle, has the characteristic of the load torque shown in Fig. 6.Therefore, utilize control device 30 to control, thereby suppress to rotate irregular, reduction vibration so that electric element 3 produces the torque that meets this torque characteristics.This running below 40rps that inertia force of rotor is reduced is especially effective.
But, be not as present embodiment, to have the Magnetic Sensor that utilizes Hall element or detect in the hermetic compressor 37 of Direct Phase checkout gear of code device etc., rotor 11 and stator 10 of the rotation phase of axle, by revolution electric current or in the information such as induced voltage of alternate generation, inferred position, carry out above-mentioned torque control ideally in all zones be unusual difficulty.In fact sometimes in the scope of control vibration, departed from optimal point.At this moment, from the permanent magnet 24 of rotor 11, the magnetic field that stator 10 forms is mutual dislocation on the direction of advance of rotation direction and the opposite direction of advancing sometimes, and this forms to encourage to permanent magnet 24 and shakes, and under the situation of carrying out matched in clearance, this vibration produces noise.
In the present embodiment, as Fig. 2, shown in Figure 3, ventilation hole 40 is used for the top of cold media gas to airtight container 1 is guided, and makes the bottom that is flow to airtight container 1 with cold media gas by the refrigerating machine oil to the guiding of airtight container 1 top.The part of this ventilation hole 40 forms the shape that has to the side-prominent protuberance 40c of magnet insertion holes 22, between magnet insertion holes 22 and ventilation hole 40, thinner wall section 41 is set, as shown in Figure 4, to insert the mode that permanent magnet 24 preceding magnet insertion holes 22 are narrower than the thickness of permanent magnet 24, make the relative direction of insertion of a part (end of counterweight 25a in the example of Fig. 4 being) be deformed into taper in advance, by permanent magnet 24 is pressed into this place and fixed permanent magnet 24.Be used to make the thinner wall section 41 of iron core distortion, fixed permanent magnet 24 also can be arranged in 40 minutes, also can many places be set a relative magnet insertion holes 22 with ventilation hole.
With mould with magnet insertion holes 22 when laminating direction forms taper, the complex structure of mould, cost are very high.And, to insert permanent magnet 24 backs, thinner wall section 41 distortion are fixed in the method for permanent magnet 24, the elastic resilience of the thinner wall section 41 by distortion does not have enough effects to suppressing because of the magnet vibration that forms of shaking of encouraging of torque control.
As mentioned above, for hermetic compressor 37, use before inserting permanent magnet 24, make the magnet insertion holes 22 of rotor core 21 and the thinner wall section 41 between the ventilation hole 40 be deformed into taper, by being pressed into the rotor 11 that permanent magnet 24 fixes permanent magnet 24.This hermetic compressor 37 can suppress the rattle of permanent magnet 24 when the low-speed running that is undertaken by torque control, when reducing vibration, noise, further hermetic compressor 37 turns round on low speed ground.
Second execution mode
In the first embodiment, be illustrated having the hermetic compressor 37 that magnet insertion holes 22 by making rotor core 21 and 41 distortion of the thinner wall section between the ventilation hole 40 fix the rotor 11 of permanent magnet 24, the manufacture method to this rotor 11 in second execution mode describes.
Fig. 7 is the figure of expression second execution mode, an example of the distortion operation of expression rotor core 21.In Fig. 7 (a),, prepare iron core distortion anchor clamps 38 (at this, six roots of sensation distortion anchor clamps form one) with respect to the rotor core 21 that is combined with each electromagnetic steel plate by lamination, riveted joint.In Fig. 7 (b), iron core distortion anchor clamps 38 insert six ventilation holes 40 of rotor core 21, and near the thinner wall section 41 the axial end is out of shape, the radial width of ventilation hole 40 is narrowed down.In Fig. 7 (c), will the iron core distortion anchor clamps 38 of thinner wall section 41 distortion be extracted from rotor core 21.In Fig. 7 (d), permanent magnet 24 is inserted from axial the other end of rotor core 21.At this moment, the periphery distortion is installed near an axial end of rotor core 21 at least prevents anchor clamps 39, in case the distortion of the periphery of the sub-iron core 21 of spline.Permanent magnet 24 is pressed into the part of the magnet insertion holes 22 that thinner wall section 41 is out of shape, radial width narrows down and fixes.Fig. 7 (e) is that the state that the periphery distortion prevents anchor clamps 39, is pressed into permanent magnet 24 is pulled down in expression.
In the distortion operation of the thinner wall section 41 of Fig. 7 (b),, can easily carry out the distortion of thinner wall section 41 by using the iron core distortion anchor clamps 38 chimeric with the protuberance 40a of ventilation hole 40.
The 3rd execution mode
Fig. 8 is the figure of expression the 3rd execution mode, is the refrigerant loop diagram of air conditioner.As shown in Figure 8, the refrigerant loop of air conditioner is made of the reservoir 54 in hermetic compressor 37, cross valve 50, outdoor heat converter 51, decompressor 52 (electric expansion valve), indoor heat converter 53 and refrigerant loop.
Shown in the solid line of Fig. 8, when carrying out cooling operation, refrigerant flows with the reservoir 54 in hermetic compressor 37, cross valve 50, outdoor heat converter 51, decompressor 52, indoor heat converter 53, cross valve 50, refrigerant loop and the order of hermetic compressor 37.
Shown in the dotted line of Fig. 8, when carrying out warming operation, refrigerant flows with the reservoir 54 in hermetic compressor 37, cross valve 50, indoor heat converter 53, decompressor 52, outdoor heat converter 51, cross valve 50, refrigerant loop and the order of hermetic compressor 37.
By the hermetic compressor 37 that uses first execution mode, when can reduce the vibration of air conditioner and noise, can low-speed running hermetic compressor 37.
Though with the air conditioner is that example is illustrated, the refrigerating circulatory device of the device of use kind of refrigeration cycle, for example refrigerator, showcase, hot-warer supplying machine etc. also can use hermetic compressor 37.
The 4th execution mode
Fig. 9 to Figure 12 is the figure of expression the 4th execution mode, Fig. 9 is the figure of permanent magnet 24 operating actions of the rotor 11 of explanation first execution mode, Figure 10 is near the enlarged drawing the ventilation hole 40 of expression rotor core 21, Figure 11 is the figure of distortion operation of the thinner wall section 41 of expression rotor core 21, and Figure 12 is the figure of the permanent magnet 24 operating actions of explanation rotor 11.
In Fig. 9, be the vertical view of the rotor core 21 of first execution mode (a), (b) be the A-A cutaway view of (a), (c) be the B-B cutaway view of (a).As mentioned above, do not have the Magnetic Sensor that utilizes Hall element or detecting in the hermetic compressor 37 of Direct Phase checkout gear of code device etc., rotor 11 and stator 10 of the rotation phase of axle, carrying out above-mentioned torque control by revolution electric current or in the information inferred position such as induced voltage of alternate generation, in all zones ideally and be unusual difficulty.In fact sometimes in the scope of control vibration, departed from optimal point.At this moment, from the permanent magnet 24 of rotor 11, the magnetic field that stator 10 forms is mutual dislocation on the direction of advance of rotation direction and the opposite direction of advancing sometimes, and this forms to encourage to permanent magnet 24 and shakes.In the first embodiment, shown in Fig. 9 (b), near a side axial end portion, push permanent magnet 24 with thinner wall section 41, so, under the big condition of load torque or in motor, there is following situation, promptly under the effect of the magnetic force that the opposite direction that acts on direction of advance on the permanent magnet 24, that rotating and direction of advance alternately applies with more low frequency operation, generation moment, permanent magnet 24 carry out oscillating motion, thereby produce vibration, noise.
Therefore, in the present embodiment, on the magnet insertion holes 22 of rotor core 21, projection 22a is set, is roughly pushing permanent magnet 24 with thinner wall section 41 on the entire axial length.If the radial direction width of magnet insertion holes 22 is made as A, the thickness of permanent magnet 24 is made as B, the height of projection 22a is made as C, then need to satisfy following relationship:
C＞A-B (1)
0＜C-(A-B)＜α (2)
At this, α is the value that can not damage permanent magnet 24 this degree.
But,, then permanent magnet 24 can't be inserted magnet insertion holes 22 swimmingly if projection 22a is set in the entire axial length of the magnet insertion holes 22 of rotor core 21.If permanent magnet 24 is carried out processing such as chamfering, even then exist projection 22a also can insert, still,, then can influence its characteristic if permanent magnet 24 is processed, undesirable.
Therefore, can easily insert magnet insertion holes 22, a side's of magnet insertion holes 22 axial end portion (end, inserting side of permanent magnet 24) is expanded in order to make permanent magnet 24.Make thinner wall section 41 distortion, to ventilation hole 40 sides expansion magnet insertion holes 22.Figure 11 represents to expand a side's of magnet insertion holes 22 the operation of axial end portion.
(a) iron core is out of shape the top that anchor clamps 38 are arranged on rotor core 21.
(b) axial end portion from a side of magnet insertion holes 22 inserts iron core distortion anchor clamps 38.At this moment, in order to prevent the periphery distortion of rotor core 21, in the periphery of rotor core 21 the periphery distortion is set and prevents anchor clamps 39.
(c) extract iron core distortion anchor clamps 38 from magnet insertion holes 22.
(d) side the axial end portion from the magnet insertion holes 22 of expansion is pressed into permanent magnet 24.
(e) finish rotor 11.
In Figure 12, be the vertical view of rotor 11 (a), (b) be the A-A cutaway view of (a), (c) be the B-B cutaway view of (a).Shown in (b), even on permanent magnet 24, act on the magnetic force that the opposite direction of the direction of advance of rotation and direction of advance alternately applies, owing to be in roughly from axial 1/2nd and push permanent magnet 24 by thinner wall section 41 in the length range, thereby can prevent to eliminate vibration, noise that oscillating motion causes because of the generation of the moment of magnetic force generation.In addition, also can push permanent magnet 24 with thinner wall section 41 at axial place more than 1/2nd.
Though near the rotor the central authorities that projection 22a are arranged on magnet insertion holes 22 is illustrated, and the position of projection, number can be arbitrarily.And ventilation hole 40 also should change position, number with it accordingly.
The 5th execution mode
Figure 13, Figure 14 are the figure of expression the 5th execution mode, and Figure 13 is the distortion operation of thinner wall section 41 of expression rotor core 21 and the figure that is pressed into operation of permanent magnet 24, and Figure 14 is the figure of the permanent magnet 24 operating actions of explanation rotor 11.
In the present embodiment, axially pushing permanent magnet 24 at two positions at least, thereby can prevent to suppress the oscillating motion of operating permanent magnet 24 because of the generation of the moment of magnetic force generation.
This execution mode is realized by processing.Figure 13 represents the operation that is pressed into of the distortion operation of thinner wall section 41 of rotor core 21 and permanent magnet 24.At this, adopt two kinds of iron core distortion anchor clamps 38a, iron core distortion anchor clamps 38b.Iron core distortion anchor clamps 38a has two protuberances in the outside, the cross section forms taper in the axial direction.In addition, prepare tapered in the axial direction iron core distortion anchor clamps 38b.Iron core is out of shape anchor clamps 38a and iron core distortion anchor clamps 38b is made up, can make thickness radially become even.And iron core distortion anchor clamps 38b is a prerequisite will extract afterwards, and its front end is thin.
Operation to Figure 13 describes in order.
(a) earlier iron core is out of shape anchor clamps 38a and inserts ventilation hole 40.And then the fore-end that iron core is out of shape anchor clamps 38b inserts in the ventilation hole 40.
(b) iron core is out of shape the inside in anchor clamps 38b plenum ventilation hole 40.By this action, the outer shape that makes thinner wall section 41 follow iron core distortion anchor clamps 38a is out of shape at two positions vertically, and the radial width of the magnet insertion holes 22 of this part narrows down.
(c) iron core being out of shape anchor clamps 38b extracts from ventilation hole 40.
(d) iron core being out of shape anchor clamps 38a also extracts from ventilation hole 40.
(e) the iron core distortion is set and prevents anchor clamps 39, permanent magnet 24 is inserted in the magnet insertion holes 22.
(f) finish rotor 11.At axial two positions thinner wall section 41 fixed permanent magnets 24.
In Figure 14, be the vertical view of rotor 11 (a), (b) be the A-A cutaway view of (a), (c) be the B-B cutaway view of (a).Shown in (b), even on permanent magnet 24, act on the magnetic force that the opposite direction of the direction of advance of rotation and direction of advance alternately applies, owing to push permanent magnet 24 by thinner wall section 41 at two axial positions, thereby can prevent to eliminate vibration, noise that oscillating motion causes because of the generation of the moment of magnetic force generation.
The 6th execution mode
Figure 15 is the figure of expression the 6th execution mode, the distortion operation of thinner wall section 41a, the 41b of expression rotor core 21a, 21b and permanent magnet 24 be pressed into operation.
Present embodiment and the 5th execution mode are similarly pushed permanent magnet 24 at least two axial positions, thereby can be prevented the generation of the moment that magnetic force produces, and suppress the oscillating motion of operating permanent magnet 24.But, at this, rotor core 21 is divided into two, respectively according to making near the axial end portion thinner wall section 41 distortion with the same method of first execution mode.Then it is made up, formed rotor 11.
The operation that is pressed into of the distortion operation of thinner wall section 41a, 41b of rotor core 21a, 21b and permanent magnet 24 is described with Figure 15.
(a) iron core is out of shape the top that anchor clamps 38 are arranged on separated into two parts rotor core 21a.
(b) in ventilation hole 40a, insert iron core distortion anchor clamps 38, make thinner wall section 41a distortion.
(c) iron core being out of shape anchor clamps 38 extracts from ventilation hole 40a.
(d) iron core is out of shape the top that anchor clamps 38 are arranged on rotor core 21b divided into two parts.
(e) in ventilation hole 40b, insert iron core distortion anchor clamps 38, make thinner wall section 41b distortion.
(f) iron core being out of shape anchor clamps 38 extracts from ventilation hole 40b.
(g) rotor core 21a and rotor core 21b are made up.
(h) distortion of iron core periphery being set prevents from anchor clamps 39 permanent magnet 24 to be pressed into magnet insertion holes 22.
(i) finish rotor 11.
For the rotor of making according to above-mentioned operation 11, even on permanent magnet 24, act on the magnetic force that the opposite direction of the direction of advance of rotation and direction of advance alternately applies, owing to push permanent magnet 24 by thinner wall section 41 at two axial positions, thereby can prevent to eliminate vibration, noise that oscillating motion causes because of the generation of the moment of magnetic force generation.
The number of cutting apart of rotor core 21 can be arbitrarily.
In addition, the deformation place of the thinner wall section of each divided rotor core, number can be arbitrarily.
With first execution mode similarly, be equipped with the hermetic compressor 37 of the rotor 11 of the 4th execution mode to the six execution modes by use, can reduce vibration, the noise of the kind of refrigeration cycle of air conditioner etc., simultaneously, but low speed ground running hermetic compressor 37.
Claims (11)
1. rotor is characterized in that having: rotor core, a plurality of magnet insertion holes, deformable thinner wall section and permanent magnet,
Described rotor core carries out the punching press lamination with the thin plate electromagnetic steel plate and forms;
Described a plurality of magnet insertion holes is arranged on the inboard of this rotor core outer peripheral face, in circumferential extension;
Described deformable thinner wall section is adjacent with this magnet insertion holes, form vertically, simultaneously, an axial at least part so that the mode that the radial width of described magnet insertion holes narrows down form;
Described permanent magnet is pressed in the part that the described radial width of described magnet insertion holes narrows down.
2. rotor as claimed in claim 1 is characterized in that, has the hole that forms vertically near described magnet insertion holes, and described thinner wall section is arranged between this hole that forms vertically and the described magnet insertion holes.
3. rotor as claimed in claim 2 is characterized in that, has to the side-prominent protuberance of described magnet insertion holes along the hole of described axial formation, and described thinner wall section is arranged between this protuberance and the described magnet insertion holes.
4. rotor as claimed in claim 1 is characterized in that, the projection of outstanding and fixing described permanent magnet in this magnet insertion holes is set at the inner side edge of described magnet insertion holes.
5. rotor as claimed in claim 4 is characterized in that, the described radial width of described magnet insertion holes is in axial narrowing down more than 1/2nd.
6. rotor as claimed in claim 1 is characterized in that, the described radial width of described magnet insertion holes narrows down at two axial positions.
7. the manufacture method of a rotor, this rotor has: rotor core, a plurality of magnet insertion holes, thinner wall section and permanent magnet, described rotor core carry out the punching press lamination with the thin plate electromagnetic steel plate and form; Described a plurality of magnet insertion holes is arranged on the inboard of this rotor core outer peripheral face, in circumferential extension; Described thinner wall section and this magnet insertion holes is adjacent, form vertically; Described permanent magnet is inserted in the described magnet insertion holes, and the method for the manufacturing of this rotor is characterised in that,
Described permanent magnet is inserted before the described magnet insertion holes, make described thinner wall section distortion, make axial at least a portion radial width of described magnet insertion holes narrow down, described permanent magnet is pressed into described magnet insertion holes.
8. the manufacture method of a rotor, this rotor has: rotor core, a plurality of magnet insertion holes, thinner wall section and permanent magnet, described rotor core carry out the punching press lamination with the thin plate electromagnetic steel plate and form; Described a plurality of magnet insertion holes is arranged on the inboard of this rotor core outer peripheral face, in circumferential extension; Described thinner wall section and this magnet insertion holes is adjacent, form vertically, and side-prominent to described magnet insertion holes; Described permanent magnet is inserted in the described magnet insertion holes, and the method for the manufacturing of this rotor is characterised in that,
Before described permanent magnet is inserted described magnet insertion holes, make to the side-prominent thinner wall section of described magnet insertion holes and be out of shape to the inboard of rotor core, expand the radial width of axial at least a portion of described magnet insertion holes, described permanent magnet is inserted described magnet insertion holes.
9. the manufacture method of a rotor, this rotor has: rotor core, a plurality of magnet insertion holes, thinner wall section and permanent magnet, described rotor core carry out the punching press lamination with the thin plate electromagnetic steel plate and form; Described a plurality of magnet insertion holes is arranged on the inboard of this rotor core outer peripheral face, in circumferential extension; Described thinner wall section and this magnet insertion holes is adjacent, form vertically; Described permanent magnet is inserted in the described magnet insertion holes, and the method for the manufacturing of this rotor is characterised in that,
Be divided into described rotor core a plurality of;
For divided each rotor core, before described permanent magnet is inserted described magnet insertion holes, make described thinner wall section distortion, the radial width of axial at least a portion of described magnet insertion holes is narrowed down;
Divided each rotor core of lamination;
Described permanent magnet is pressed into described magnet insertion holes.
10. a hermetic compressor is housed in electric element and compressing member in the airtight container, and this electric element has stator and has the rotor of permanent magnet; This compressing member is driven by this electric element, it is characterized in that, the described rotor of described electric element uses each described rotor in the claim 1 to 6.
11. a refrigerating circulatory device is characterized in that, uses the described hermetic compressor of claim 10.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-169614 | 2006-06-20 | ||
| JP2006169614 | 2006-06-20 | ||
| JP2006169614 | 2006-06-20 | ||
| JP2006-322745 | 2006-11-30 | ||
| JP2006322745 | 2006-11-30 | ||
| JP2006322745A JP5221030B2 (en) | 2006-06-20 | 2006-11-30 | Rotor, rotor manufacturing method, hermetic compressor, and refrigeration cycle apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101093945A CN101093945A (en) | 2007-12-26 |
| CN101093945B true CN101093945B (en) | 2011-07-27 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610114870 Pending CN101093944A (en) | 2006-06-20 | 2006-08-09 | Rotor and manufacturing method thereof, enclosed type compressor and refrigeration circulating apparatus |
| CN200710005323XA Active CN101093945B (en) | 2006-06-20 | 2007-02-14 | Rotor and manufacturing method thereof, enclosed type compressor and refrigeration circulating apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610114870 Pending CN101093944A (en) | 2006-06-20 | 2006-08-09 | Rotor and manufacturing method thereof, enclosed type compressor and refrigeration circulating apparatus |
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| Country | Link |
|---|---|
| CN (2) | CN101093944A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9800105B2 (en) * | 2012-11-01 | 2017-10-24 | Mitsubishi Electric Corporation | Permanent magnet embedded motor, compressor, and refrigeration and air conditioning device |
| US11831204B2 (en) * | 2018-05-10 | 2023-11-28 | Mitsubishi Electric Corporation | Rotor, motor, compressor, and air conditioner |
| WO2020170390A1 (en) * | 2019-02-21 | 2020-08-27 | 三菱電機株式会社 | Motor, compressor, and air conditioning device |
| US11692856B1 (en) | 2022-06-03 | 2023-07-04 | Nidec Motor Corporation | Rotary encoder shaft clamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601873A (en) * | 2003-09-25 | 2005-03-30 | 乐金电子(天津)电器有限公司 | Rotor of brushless d, c, dynamo |
-
2006
- 2006-08-09 CN CN 200610114870 patent/CN101093944A/en active Pending
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2007
- 2007-02-14 CN CN200710005323XA patent/CN101093945B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601873A (en) * | 2003-09-25 | 2005-03-30 | 乐金电子(天津)电器有限公司 | Rotor of brushless d, c, dynamo |
Non-Patent Citations (2)
| Title |
|---|
| JP平11-89140A 1999.03.30 |
| JP平5-219668A 1993.08.27 |
Also Published As
| Publication number | Publication date |
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| CN101093944A (en) | 2007-12-26 |
| CN101093945A (en) | 2007-12-26 |
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Inventor after: Feng Jianxiu Inventor after: Oikawa Tomoaki Inventor after: Okugawa Sadayoshi Inventor after: Di Guihong Inventor after: Fujisue Yoshikazu Inventor after: Hara Shoichiro Inventor before: Feng Jianxiu Inventor before: Oikawa Tomoaki Inventor before: Okugawa Sadayoshi Inventor before: Di Guihong Inventor before: Fujisue Yoshikazu |
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Free format text: CORRECT: INVENTOR; FROM: KAZAMA OSAMU OIKAWA TOMOAKI OKUGAWA SADAYOSHI TSUTSUMI TAKAHIRO FUJISUE YOSHIKAZU TO: KAZAMA OSAMU OIKAWA TOMOAKI OKUGAWA SADAYOSHI TSUTSUMI TAKAHIRO FUJISUE YOSHIKAZU HARA SHOICHIRO |