CN105545746A

CN105545746A - Compressor manufacturing device and compression manufacturing method

Info

Publication number: CN105545746A
Application number: CN201510496547.XA
Authority: CN
Inventors: 高桥广康; 水野隆太郎; 饭田和树; 中村英之
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2014-10-23
Filing date: 2015-08-13
Publication date: 2016-05-04
Anticipated expiration: 2035-08-13
Also published as: JP6290065B2; CN205001187U; JP2016084718A; CN105545746B

Abstract

The utility model discloses a compressor manufacturing device and a compression manufacturing method capable of improving the internal diameter roundness of a stator of a motor which a compressor is equipped with. The compressor manufacturing device (90) comprises: a compression clamp (91) and a pressing clamp (95). The compression clamp (91) acts a radial force (F) on the outer peripheral face (83) of a sealed container outer through the outside from the sealed container so that two convex parts arranged along the circumferencial direction is formed on the inner peripheral surface (81) of the sealed container, and the two convex parts enter two concave parts formed at the outer peripheral face (71) of the stator (41). The pressing clamp (95) acts a radial force (G) on the inner peripheral surface (70) of the stator (41) through the inner side of the stator (41) so that the deformation of the inner peripheral surface (70) of the stator (41) caused by the force (F) from the compression clamp (91) is suppressed.

Description

Compression mechanism manufacturing apparatus and compression mechanism making process

Technical field

The present invention relates to compression mechanism manufacturing apparatus and compression mechanism making process.The present invention such as relates to manufacturing installation and the manufacture method of the sealed electrical compressor that the refrigerating circulatory device such as air conditioner, refrigerator uses.

Background technique

Be fixed on the method for seal container as the existing stator by the motor of sealed electrical compressor, have the method (such as with reference to patent documentation 1) by hot charging, the stator with the external diameter larger than seal container internal diameter being fixed on seal container.Also have by arc spot welding or laser bonding, the stator with the external diameter less than seal container internal diameter is fixed on the method for seal container.

Also there is the method (such as with reference to patent documentation 2) do not implemented hot charging and stator is fixed on seal container.In the method, multiple lower opening close to each other are set at stator outer circumferential face.After the position local opposed with above-mentioned multiple lower opening of seal container is heated, compressing fixture is pressed on this position towards radially inner side, forms the protuberance engaged with lower opening at seal container.By seal container because cooling the thermal shrinkage that causes, fastening to carrying out between the lower opening of stator with the protuberance of seal container, thus stator is fixed on seal container.

Japanese Laid-Open Patent Publication 60-159391 publication

Japanese Unexamined Patent Publication 2007-303379 publication

The stator of motor is being fixed in the method for seal container by hot charging, is being difficult to control action in the fastening force of stator.The rigidity of the stator particularly formed by laminated electromagnetic steel plate is less, and the roundness of the internal diameter of stator is deteriorated, and the space thus between stator and rotor becomes uneven, in the running of compressor, produces the uneven sound of magnetic force.In addition, because of temperature distribution during heating seal container difference or heat the liberation of the machining deformation produced because of parts, thus stress concentrates on the special position of stator core and produces iron loss, and motor efficiency is reduced.

Even by arc spot welding or laser bonding, stator is fixed on the method for seal container, because the tensile force caused because of thermal shrinkage when welding also acts on stator, therefore because the internal diameter roundness of stator is deteriorated, in the operation process of compressor, produce the uneven sound of magnetic force thus.In addition, when welding, foreign matter can enter in seal container.

Not implementing hot charging, stator is fixed in the method for seal container, by compressing fixture is pressed on seal container towards radially inner side, the protuberance of seal container enters multiple lower opening of stator outer circumferential face thus, but now stator inner peripheral surface is likely out of shape, the roundness of the internal diameter of stator is deteriorated.

Summary of the invention

The object of the invention is to the internal diameter roundness of the stator such as improving the motor that compressor possesses.

The compression mechanism manufacturing apparatus of a mode of the present invention, manufactures following compressor, and described compressor possesses: motor, and it has stator, and is formed with two recesses along the circumferential direction arranged at the outer circumferential face of described stator; Compressing mechanism, it is by described motoring; And container, it receives described stator and described compressing mechanism.

The feature of described compression mechanism manufacturing apparatus is, possess: compressing fixture, its outside from described container to the power of the outer circumferential face effect radial direction of described container, thus forms two protuberances along the circumferential direction arranged at the inner peripheral surface of described container, and makes described two protuberances enter described two recesses; And pressing fixture, its inner side from described stator to the power of the inner peripheral surface effect radial direction of described stator, thus suppresses the distortion of the inner peripheral surface of the described stator caused by the power from described compressing fixture.

Preferably, described two recesses are formed at multiple positions of the circumferencial direction of the outer circumferential face of described stator, with the described multiple position corresponding position of described compressing fixture to the outer circumferential face of described container acts on radial power, and with the described multiple position corresponding position of described pressing fixture to the inner peripheral surface of described stator acts on radial power.

Preferably, described pressing fixture is configured to comprise driving mechanism and external mold, and this external mold is radially driven by described driving mechanism, and contacts with the inner peripheral surface of described stator.

Preferably, described pressing fixture is configured to the extraction rod and the external mold that comprise wedge shape, and this external mold is formed for the described hollow portion extracting the taper that rod inserts out, and contacts with the inner peripheral surface of described stator.

Preferably, described compressing fixture at described container by under the state that heats, form described two protuberances, thermal shrinkage is carried out after described two protuberances are heated by described container, thus the part between described two recesses sandwiching described stator, described compression mechanism manufacturing apparatus also possesses other pressing fixtures, described other press the outside of fixtures from described container to the power of the outer circumferential face effect radial direction of described container, thus suppress the distortion of the outer circumferential face of the described container caused by the thermal shrinkage of described two protuberances.

Preferably, other pressing fixtures described in the two ends of the axis of described container, than described compressing mechanism near acting on radial power between one end of described stator and described stator.

The compression mechanism making process of another mode of the present invention, for the manufacture of following compressor, described compressor possesses: motor, and it has stator, and is formed with two recesses along the circumferential direction arranged at the outer circumferential face of described stator; Compressing mechanism, it is by described motoring; And container, it receives described stator and described compressing mechanism, the feature of described compression mechanism making process is, utilize compressing fixture from the outside of described container to the power of the outer circumferential face effect radial direction of described container, thus two protuberances along the circumferential direction arranged are formed at the inner peripheral surface of described container, and make described two protuberances enter described two recesses, utilize pressing fixture from the inner side of described stator to the power of the inner peripheral surface effect radial direction of described stator, thus suppress the distortion of the inner peripheral surface of the described stator caused by the power from described compressing fixture.

In the present invention, the pressing fixture of compression mechanism manufacturing apparatus makes radial masterpiece for the inner peripheral surface of stator from the inner side of stator, thus suppresses the distortion of the inner peripheral surface of the stator caused by the power from compressing fixture.Therefore according to the present invention, the roundness of the internal diameter of stator can be improved.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of the refrigerating circulatory device of mode of execution 1.

Fig. 2 is the circuit diagram of the refrigerating circulatory device of mode of execution 1.

Fig. 3 is the longitudinal section of the compressor of mode of execution 1.

Fig. 4 is the A-A sectional view of Fig. 3.

Fig. 5 is the stereogram of the stator core of the stator of the motor of mode of execution 1.

Fig. 6 is the plan view of the stator core of the stator of the motor of mode of execution 1.

Fig. 7 is the partial perspective view of the seal container of mode of execution 1.

Fig. 8 is the sectional elevation of the seal container of mode of execution 1.

Fig. 9 is the plan view of the divided-iron core of the stator of the motor of mode of execution 1.

Figure 10 is the compression mechanism manufacturing apparatus of mode of execution 1 and the plan view of compressor.

Figure 11 is the compression mechanism manufacturing apparatus of mode of execution 1 and the longitudinal section of compressor.

Figure 12 is the stator of the motor of mode of execution 1 and the partial sectional view of seal container.

Figure 13 is the stator of the motor of mode of execution 1 and the partial sectional view of seal container.

Figure 14 is the stator of the motor of mode of execution 1 and the partial sectional view of seal container.

Figure 15 is the E direction view of Figure 14.

Figure 16 is the plan view of the pressing fixture of the compression mechanism manufacturing apparatus of mode of execution 1 and the stator of motor.

Figure 17 is the compression mechanism manufacturing apparatus of mode of execution 2 and the longitudinal section of compressor.

Figure 18 is the compression mechanism manufacturing apparatus of mode of execution 3 and the longitudinal section of compressor.

Figure 19 is the compression mechanism manufacturing apparatus of mode of execution 4 and the plan view of compressor.

Figure 20 is the compression mechanism manufacturing apparatus of mode of execution 4 and the longitudinal section of compressor.

Description of reference numerals: 10 ... refrigerating circulatory device; 11a, 11b ... refrigerant circuit; 12 ... compressor; 13 ... four-way valve; 14 ... outdoor heat converter; 15 ... expansion valve; 16 ... indoor heat converter; 17 ... control gear; 20 ... seal container; 21 ... suction pipe; 22 ... discharge tube; 23 ... suction silencer; 24 ... terminal; 25 ... refrigerating machine oil; 26 ... container body; 27 ... container cover; 30 ... compressing mechanism; 31 ... cylinder; 32 ... rotary-piston; 33 ... main bearing; 34 ... supplementary bearing; 35 ... discharge silencing apparatus; 36 ... blade; 37 ... leaf spring; 40 ... motor; 41 ... stator; 42 ... rotor; 43 ... stator core; 44 ... coil; 45 ... wire; 46 ... rotor core; 47 ... insulating element; 48 ... upper head plate; 49 ... lower end sheet; 50 ... crankshaft; 51 ... eccentric axial portion; 52 ... main shaft part; 53 ... countershaft portion; 61 ... blade groove; 62 ... cylinder chamber; 63 ... back pressure chamber; 70 ... inner peripheral surface; 71 ... outer circumferential face; 72 ... recess; 73 ... incised notch portion; 74 ... divided-iron core; 75 ... teeth portion; 76 ... fixing part; 77 ... protuberance; 78 ... non-contact area; 79 ... contact area; 81 ... inner peripheral surface; 82 ... protuberance; 83 ... outer circumferential face; 84 ... machining hole; 85 ... caulking part; 90 ... compression mechanism manufacturing apparatus; 91 ... compressing fixture; 92 ... front end; 93 ... heated perimeter; 94 ... heated center; 95 ... pressing fixture; 96 ... driving mechanism; 97 ... external mold; 98 ... extract rod out; 99 ... pressing fixture.

Embodiment

Below, figure is used to be described embodiments of the present invention.In addition in the various figures, to same or equivalent part, mark identical reference character.In the explanation of mode of execution, the explanation of same or equivalent part is suitably omitted or simplifies.In addition, in the explanation of mode of execution, for being called " on ", D score, "left", "right", "front", "rear", " table ", " inner " configuration, towards etc., just carry out for convenience of explanation and like that describe, not device for limiting, utensil, parts etc. configuration, towards etc.For the structure of device, utensil, parts etc., its material, shape, size etc., can change within the scope of the invention aptly.

Mode of execution 1

Fig. 1 and Fig. 2 is the circuit diagram of the refrigerating circulatory device 10 of present embodiment.Fig. 1 represents refrigerant circuit 11a during cooling operation.Fig. 2 represents refrigerant circuit 11b when heating running.

In the present embodiment, refrigerating circulatory device 10 is air conditioners.In addition, even if refrigerating circulatory device 10 is the equipment except air conditioner of refrigerator, heat pump circulating device and so on, also present embodiment can be applied.

As shown in Figure 1 and Figure 2, refrigerating circulatory device 10 possesses refrigerant circuit 11a, the 11b for refrigerant circulation.

Be connected with at refrigerant circuit 11a, 11b: compressor 12, four-way valve 13, outdoor heat converter 14, expansion valve 15 and indoor heat converter 16.Compressor 12 pairs of refrigeration agents compress.Four-way valve 13 is when cooling operation and switch the direction of flow of refrigerant when heating running.Outdoor heat converter 14 is examples of the first heat exchanger.When cooling operation, outdoor heat converter 14, as condenser action, makes the refrigerant loses heat after being compressed by compressor 12.When heating running, outdoor heat converter 14, as vaporizer action, carries out heat exchange, thus heats refrigeration agent between outdoor air and the refrigeration agent after utilizing expansion valve 15 to expand.Expansion valve 15 is examples of expansion mechanism.Expansion valve 15 makes the refrigeration agent after utilizing condenser to dispel the heat expand.Indoor heat converter 16 is examples of the second heat exchanger.When heating running, indoor heat converter 16, as condenser action, makes the refrigerant loses heat after being compressed by compressor 12.When cooling operation, indoor heat converter 16, as vaporizer action, carries out heat exchange, thus heats refrigeration agent between indoor air and the refrigeration agent after utilizing expansion valve 15 to expand.

Refrigerating circulatory device 10 also possesses control gear 17.

Control gear 17 is such as microcomputer.In Fig. 1 and Fig. 2, although only illustrate that control gear 17 is connected with compressor 12, control gear 17 is not only connected to compressor 12, and is connected with each parts being connected to refrigerant circuit 11a, 11b.Control gear 17 monitors or controls the state of each parts.

As the refrigeration agent circulated at refrigerant circuit 11a, 11b, the arbitrary refrigeration agent such as R407C refrigeration agent, R410A refrigeration agent, R1234yf refrigeration agent can be used.Also R744 (CO can be used ₂) refrigeration agent or R290 (propane) refrigeration agent.

Fig. 3 is the longitudinal section of compressor 12.Fig. 4 is the A-A sectional view of Fig. 3.In addition, in Fig. 3 and Fig. 4, eliminate the hatching representing section.In addition, in the diagram, the inner side of seal container 20 is only shown.

In the present embodiment, compressor 12 is rotary compressors of 1 cylinder.In addition, even if compressor 12 is rotary compressor or the scroll compressor of multi cylinder, also present embodiment can be applied.

As shown in Figure 3, compressor 12 possesses: seal container 20, compressing mechanism 30, motor 40 and crankshaft 50.

Seal container 20 is examples of container.Be provided with at seal container 20: for sucking the suction pipe 21 of refrigeration agent and the discharge tube 22 for discharging refrigerant.Seal container 20 is configured to comprise: container body 26, the one end open of its short transverse; With container cover 27, it is installed on container body 26 in the mode of one end of the opening of closed container main body 26.

Compressing mechanism 30 is accommodated in the inner side of seal container 20.Specifically, compressing mechanism 30 is arranged at the lower inside of seal container 20.Compressing mechanism 30 is driven by motor 40.Compressing mechanism 30 compresses the refrigeration agent being drawn into suction pipe 21.

Motor 40 is also accommodated in the inner side of seal container 20.Specifically, motor 40 in the inner side of seal container 20, and is arranged on the refrigeration agent after being compressed by compressing mechanism 30 from the position passed through before discharge tube 22 is discharged.That is, motor 40 is in the inner side of seal container 20, and is arranged on the top of compressing mechanism 30.Motor 40 is motors of concentratred winding.In addition, even if motor 40 is motors of Distributed Winding, also present embodiment can be applied.

Refrigerating machine oil 25 is had, for each slide part of lubricate compressors structure 30 in the bottom of seal container 20.Refrigerating machine oil 25, with the rotation of crankshaft 50, is drawn by the oil pump of the bottom being arranged at crankshaft 50, and supplies to each slide part of compressing mechanism 30.As refrigerating machine oil 25, such as, be used as the POE (polyol ester) of artificial oil, PVE (polyvinylether), AB (alkylbenzene).

Below, compressing mechanism 30 is described in detail.

As shown in Figure 3 and 4, compressing mechanism 30 possesses: cylinder 31, rotary-piston 32, blade 36, main bearing 33 and supplementary bearing 34.

During top view, the periphery of cylinder 31 is roughly circle.Circular space that is cylinder chamber 62 is roughly when the inside of cylinder 31 is formed with top view.The axial both ends open of cylinder 31.

Be provided with at cylinder 31 and be connected with cylinder chamber 62, and the blade groove 61 radially extended.Circular space that is back pressure chamber 63 is roughly when being formed with the top view be connected with blade groove 61 in the outside of blade groove 61.

Although not shown, but cylinder 31 is provided with suction port, for being sucked from refrigerant circuit 11a, 11b by gas refrigerant.Suction port is through to cylinder chamber 62 from the outer circumferential face of cylinder 31.

Although not shown, but cylinder 31 is provided with exhaust port, for being discharged from cylinder chamber 62 by the refrigeration agent after compression.Exhaust port is formed in the mode of the upper-end surface incised notch making cylinder 31.

Rotary-piston 32 is ring-type.Rotary-piston 32 carries out eccentric motion in cylinder chamber 62.Rotary-piston 32 is embedded in the eccentric axial portion 51 of crankshaft 50 sliding freely.

The shape of blade 36 is smooth roughly cuboid.Blade 36 is arranged in the blade groove 61 of cylinder 31.Blade 36, by being arranged at the leaf spring 37 of back pressure chamber 63, presses on rotary-piston 32 all the time.Owing to being high pressure in seal container 20, if therefore the running of compressor 12 starts, then the power produced by the difference of the pressure in the pressure in seal container 20 and cylinder chamber 62, acts on face that is the vacuum side of blade of back pressure chamber 63 side of blade 36.Therefore, when the main compressor 12 that there is not pressure difference in seal container 20 and in cylinder chamber 62 of leaf spring 37 starts, use so that blade 36 is pressed on for the purpose of rotary-piston 32.

When observing from the side, main bearing 33 is roughly down T-shaped.Main bearing 33 is embedded in main shaft part 52 sliding freely, and this main shaft part 52 is the top part of the ratio eccentric axial portion 51 of crankshaft 50.The cylinder chamber 62 of cylinder 31 and the upside of blade groove 61 close by main bearing 33.

When observing from the side, supplementary bearing 34 is roughly T-shaped.Supplementary bearing 34 is embedded in countershaft portion 53 sliding freely, and this countershaft portion 53 is ratio eccentric axial portion 51 part on the lower of crankshaft 50.The cylinder chamber 62 of cylinder 31 and the downside of blade groove 61 close by supplementary bearing 34.

Although not shown, but main bearing 33 possesses expulsion valve.Be provided with in the outside of main bearing 33 and discharge silencing apparatus 35.Via expulsion valve discharge high temperature and the gas refrigerant of high pressure, temporarily enter discharge silencing apparatus 35, then from discharge silencing apparatus 35 in seal container 20 space release.In addition, expulsion valve and discharge silencing apparatus 35 also can be arranged at the both sides of supplementary bearing 34 or main bearing 33 and supplementary bearing 34.

The material of cylinder 31, main bearing 33, supplementary bearing 34 is gray cast iron, sintered steel, carbon steel etc.The material of rotary-piston 32 is such as the alloyed steel containing chromium etc.The material of blade 36 is such as Rapid Tool Steel.

The side of seal container 20 is provided with suction silencer 23.The gas refrigerant of low pressure sucks from refrigerant circuit 11a, 11b by suction silencer 23.When liquid refrigerant returns, suction silencer 23 suppresses liquid refrigerant directly to enter the cylinder chamber 62 of cylinder 31.Suction silencer 23 is connected to the suction port of cylinder 31 via suction pipe 21.The main body of suction silencer 23 is fixed on the side of seal container 20 by welding etc.

Below, motor 40 is described in detail.

In the present embodiment, motor 40 is brushless DC (DirectCurrent) motors.In addition, even if motor 40 is the motors except brushless DC motor such as induction motor, also present embodiment can be applied.

As shown in Figure 3, motor 40 possesses: roughly cylindric stator 41 and roughly columned rotor 42.

Stator 41 abuts with the inner peripheral surface of seal container 20 and fixes.Rotor 42 is arranged at the inner side of stator 41 via the space of about 0.3 ~ 1mm.

Stator 41 possesses stator core 43 and coil 44.Stator core 43 makes in the following manner: by with iron be main component, thickness be multiple electromagnetic steel plate stamping-outs of 0.1 ~ 1.5mm is certain shape, and stacked vertically, be fixed by riveted joint, welding etc. and make.Coil 44 is wound in stator core 43 via insulating element 47 with concentratred winding.Coil 44 is configured at least one deck tunicle comprising heart yearn and cover heart yearn.The material of heart yearn is such as copper.The material of tunicle is such as AI (amide imide)/EI (ester acid imide).The material of insulating element 47 is such as PET (PETG), PBT (polybutylene-terephthalate), FEP (tetrafluoroethylene hexafluoropropylene copolymer), PFA (tetrafluoroethylene perfluoroalkyl vinyl ether copolymer), PTFE (teflon), LCP (liquid-crystalline polymer), PPS (polyphenylene sulfide), phenolic resin.Wire 45 is connected with at coil 44.

Rotor 42 possesses rotor core 46 and not shown permanent magnet.Same with stator core 43, rotor core 46 makes as follows: by by with iron be main component, thickness be multiple electromagnetic steel plate stamping-outs of 0.1 ~ 1.5mm is certain shape, and carry out stacked vertically, be fixed by riveted joint, welding etc. and make.Permanent magnet is inserted in multiple patchhole, and multiple patchhole is formed at rotor core 46.Permanent magnet forms magnetic pole.As permanent magnet, such as, use ferrite magnet, rare earth element magnet.

In order to make permanent magnet not be pulled out vertically, in the axial two ends of rotor 42 that is rotor upper end and rotor lower end, be respectively arranged with upper head plate 48 and lower end sheet 49.Upper head plate 48 and lower end sheet 49 double as spin balancer.Upper head plate 48 and lower end sheet 49 are fixed on rotor core 46 by not shown multiple fixing rivets etc.

Although not shown, but be formed with axis hole at the center of overlooking of rotor core 46, this axis hole supplies main shaft part 52 hot charging or the press-in of crankshaft 50.Multiple through holes through roughly are vertically formed around the axis hole of rotor core 46.Each through hole becomes from one of path of discharging the gas refrigerant that silencing apparatus 35 discharges to the space in seal container 20.

Although not shown, but when motor 40 is configured to induction motor, fill in the multiple slots being formed at rotor core 46 or insert the conductor formed by aluminium, copper etc.And formation end ring makes the birdcage coil of two terminal shortcircuits of conductor.

At the top of seal container 20, the terminal 24 be connected with the external power supply of converter plant etc. is installed.Terminal 24 is such as glass terminal.Terminal 24 is such as fixed on seal container 20 by welding.The wire 45 from motor 40 is connected with at terminal 24.

The discharge tube 22 of axial both ends open is installed at the top of seal container 20.From the gas refrigerant that compressing mechanism 30 is discharged, from the space in seal container 20, by discharge tube 22, refrigerant circuit 11a, 11b externally discharge.

Detailed content will carry out describing later, be formed with recess 72 at the outer circumferential face 71 of the stator 41 of motor 40.In order to the stator 41 of motor 40 being fixed on the inner side of seal container 20, and be formed with the protuberance 82 entering recess 72 at the inner peripheral surface 81 of seal container 20.

Below, the action of compressor 12 is described.

Stator 41 from terminal 24 via from wire 45 to motor 40 is powered.Thus, electric current flows at the coil 44 of stator 41, produces magnetic flux from coil 44.The rotor 42 of motor 40 is rotated with the effect of the magnetic flux produced from the permanent magnet of rotor 42 by the magnetic flux produced from coil 44.By the rotation of rotor 42, the crankshaft 50 being fixed on rotor 42 rotates.With the rotation of crankshaft 50, the rotary-piston 32 of compressing mechanism 30 carries out eccentric rotary in the cylinder chamber 62 of the cylinder 31 of compressing mechanism 30.Space between cylinder 31 and rotary-piston 32, is divided into two parts by the blade 36 of compressing mechanism 30.With the rotation of crankshaft 50, the volume-variation in above-mentioned two spaces.In the space of a side, by expanding volume gradually, suck the gas refrigerant of low pressure thus from suction silencer 23.In the space of the opposing party, by reducing volume gradually, the gas refrigerant thus in space is compressed.Being compressed to high pressure and the gas refrigerant of high temperature, discharging to the space in seal container 20 from discharging silencing apparatus 35.The gas refrigerant be discharged, and then by motor 40, discharge to seal container 20 from the discharge tube 22 at the top being positioned at seal container 20.The refrigeration agent of discharging outside seal container 20, turns back to suction silencer 23 again by refrigerant circuit 11a, 11b.

Although not shown, but when compressor 12 is configured to shuttle-type rotary compressor, blade 36 and rotary-piston 32 are arranged integratedly.If driving crank axle 50, then blade 36 passes in and out along the receiving groove of supporting mass, and wherein supporting mass is rotatably installed on rotary-piston 32.The rotation of blade 36 accompanying rotation piston 32, swings and retreats towards radial direction, thus cylinder chamber 62 is divided internally into pressing chamber and suction chamber.Supporting mass is made up of two columnar parts of cross section semicircular in shape shape.Supporting mass is rotatably embedded in circular retaining hole, and this retaining hole is formed at the suction port of cylinder 31 and the intermediate portion of exhaust port.

Below, in order the stator core 43 of the stator 41 of motor 40 and the structure of seal container 20 are described.

Fig. 5 is the stereogram of the stator core 43 of the stator 41 of motor 40.Fig. 6 is the plan view of the stator core 43 of the stator 41 of motor 40.

As shown in figs.5 and 6, in the present embodiment, in multiple positions of the circumferencial direction of the outer circumferential face 71 of stator core 43, be formed with two recesses 72 along the circumferential direction arranged, between these two recesses 72, be formed with incised notch portion 73.In addition, the outer circumferential face 71 of stator core 43 is equivalent to the outer circumferential face of the stator 41 of motor 40.

Each recess 72 is vertically with trench-like extension.

Each incised notch portion 73 becomes from one of path of discharging the gas refrigerant that silencing apparatus 35 discharges to the space in seal container 20.Each incised notch portion 73 also becomes the path of the refrigerating machine oil 25 of the bottom being back to seal container 20 on motor 40.

Stator core 43 is formed in the mode along the circumferential direction linking multiple divided-iron core 74.That is, in the present embodiment, the stator 41 of motor 40 has the multiple divided-iron cores 74 along the circumferential direction linking thus form stator core 43.Teeth portion 75 is formed at each divided-iron core 74.Teeth portion 75 becomes and extends with the inner side of constant width to radial direction from root, and in the shape that nose width is expanded.Teeth portion 75 with constant width extend winds portions have coil 44.If electric current flows at coil 44, then the teeth portion 75 being wound with coil 44 becomes magnetic pole.The direction of magnetic pole is determined by the sense of current flowed at coil 44.

In Fig. 5 and Fig. 6, as an example, illustrate that 9 positions at the circumferencial direction of outer circumferential face 71 are formed with the stator core 43 of incised notch portion 73 and two recesses 72, but the quantity forming the position of incised notch portion 73 and two recesses 72 suitably can change.In addition, in order to the stator 41 of motor 40 being reliably fixed on the inner side of seal container 20, preferably more than three positions of the circumferencial direction of outer circumferential face 71, form incised notch portion 73 and two recesses 72.

In addition, as an example, the structure forming an incised notch portion 73 is shown, but also can adopts the structure forming two or more incised notch portion 73 between these two recesses 72 relative to two recesses 72 between these two recesses 72.

In addition, as an example, the stator core 43 being formed with 9 teeth portion 75 is shown, but the number of teeth portion 75 suitably can change.

In addition, as an example, the stator core 43 be made up of multiple divided-iron core 74 is shown, but also can uses the stator core 43 of one.

In addition, as an example, illustrate in whole teeth portion 75 or at total division iron core 74, form the structure of incised notch portion 73 and two recesses 72, but also only in a part of teeth portion 75 or only at a part of divided-iron core 74, incised notch portion 73 and two recesses 72 can be formed.In addition, when forming incised notch portion 73 and two recess 72 at total division unshakable in one's determination 74, and only form incised notch portion 73 at a part of divided-iron core 74 and compare with the situation of two recesses 72, the shape that can realize divided-iron core 74 unitizes the cost cutting brought.

In addition, as an example, each recess 72 is shown throughout the entirety of axis with the structure of trench-like extension, but also can adopts each recess 72 only structure of extending of a part vertically, that is, each recess 72 also can be adopted to be formed as the structure in hole.At each recess 72 throughout the entirety of axis with trench-like extension, compared with being formed as the situation in hole with each recess 72, the shape that can realize stacked electromagnetic steel plate unitizes the cost cutting brought, or can avoid the risk of assembly defect of electromagnetic steel plate.

As shown in figs.5 and 6, recess 72 is arranged in the mode that two of close state is a group.Below by the part area of two recesses 72 with the outer circumferential face 71 of the stator core 43 of the part combination clamped by these two recesses 72, be called fixing part 76.In the present embodiment, fixing part 76 is shown greatly and at equal intervals the outer circumferential face 71 of stator core 43 is provided with 9.Therefore recess 72 is all 18.6 in 18 use for the stator 41 of motor 40 is fixed on the inner side of seal container 20.

Fig. 7 is the partial perspective view of seal container 20.Fig. 8 is the sectional elevation of seal container 20.In addition, Fig. 7 only illustrates a part for the axis of seal container 20.The axis of seal container 20 refers to the short transverse of seal container 20.The parallel to an axis of the axis of seal container 20 and the stator 41 of motor 40.In fig. 8, the hatching representing section is omitted.

As shown in Figure 7 and Figure 8, in the present embodiment, in multiple positions of the circumferencial direction of the inner peripheral surface 81 of seal container 20, two protuberances 82 along the circumferential direction arranged are formed.Two recesses 72 entering Fig. 5 and Fig. 6 by making two protuberances 82 and represent, and sandwich the part being formed with incised notch portion 73 of the stator 41 of motor 40, thus the stator 41 of motor 40 is fixed on the inner side of seal container 20.

At the outer circumferential face 83 of seal container 20, and have machining hole 84 in the position corresponding with each protuberance 82, outer circumferential face 83 is pressed in order to each protuberance 82 is formed at inner peripheral surface 81 and is formed by this machining hole 84.

In Fig. 7 and Fig. 8, as an example, three positions of the circumferencial direction at inner peripheral surface 81 are shown, are formed with the seal container 20 of two protuberances 82, but the position being formed with two protuberances 82 suitably can be changed.In addition, in order to the stator 41 of motor 40 being reliably fixed on the inner side of seal container 20, preferably more than three positions of the circumferencial direction of inner peripheral surface 81, form two protuberances 82.

As shown in Figure 7 and Figure 8, although protuberance 82 is arranged in the mode that two of close state is a group, but as described later, the outer circumferential face 83 of seal container 20, by under the state that the stator 41 of motor 40 is arranged at the inner side of seal container 20, is pressed into the inner side of seal container 20 and is formed by protuberance 82.Two protuberances 82 in groups enter two recesses 72 in groups, thus form two riveting points.Below, the part area of inner peripheral surface 81 that combined by two protuberances 82 forming above-mentioned riveting point, seal container 20, is called caulking part 85.In the present embodiment, caulking part 85, at the inner peripheral surface 81 of seal container 20 and outer circumferential face 83, has roughly been disposed at equal intervals three.Therefore protuberance 82 is all six.

Fig. 9 is the plan view of the divided-iron core 74 of the stator 41 of motor 40.

As mentioned above, in the present embodiment, in multiple positions of the stator 41 of motor 40 and the mutual correspondence of seal container 20, two protuberances 82 enter two recesses 72, sandwich the part being formed with incised notch portion 73 of the stator 41 of motor 40, thus the stator 41 of motor 40 is fixed on the inner side of seal container 20.When not having incised notch portion 73, utilize two protuberances 82 by fastening for the part between two recesses 72, stress concentrates on the B position that Fig. 9 represents thus, i.e. the end of the radially inner side of the seam of divided-iron core 74.Due to the position that B position was the magnetic flux flows from the magnetic pole being formed at teeth portion 75 originally, if therefore stress concentrates on this position, then produce magnetic hysteresis loss.Magnetic hysteresis loss refers to that the magnetic resistance of the position of concentrating due to stress increases, thus is difficult to flow at this position magnetic flux and produces the situation of loss.Magnetic hysteresis loss is so-called iron loss, and it becomes the key factor that motor efficiency is reduced.On the other hand, in the present embodiment, owing to there is incised notch portion 73 between two recesses 72, therefore, it is possible to the C position making stress concentrate on Fig. 9 to represent, i.e. the bight of the radially inner side in incised notch portion 73.Because C position is the position left from stream from the magnetic flux of magnetic pole, even if therefore stress concentrates on this position, be also difficult to produce magnetic hysteresis loss.In addition, if stress concentrates on C position, then significantly can reduce the stress acting on B position.Therefore, it is possible to avoid the generation of iron loss, suppress the reduction of motor efficiency.

In addition, as shown in Figure 9, in the present embodiment, in incised notch portion 73 and two recess 72 regions each other of the outer circumferential face 71 of the divided-iron core 74 of formation stator core 43, be formed with protuberance 77, this protuberance 77 is than protruding outside to radial direction of other regions of the outer circumferential face 71 of divided-iron core 74.Contacted with protuberance 77 by the inner peripheral surface 81 of seal container 20, thus the stator 41 of motor 40 can be fixed on more reliably the inner side of seal container 20.And outer circumferential face 71 entirety replacing stator 41 contacts with the inner peripheral surface 81 of seal container 20, by making protuberance 77 contact with the inner peripheral surface 81 of seal container 20, thus improves the internal diameter roundness of stator 41.Namely, in the present embodiment, because two protuberances 82 being formed at seal container 20 sandwich the part being formed with incised notch portion 73 of stator 41, even if it is lower therefore to act on the fastening force of stator 41 from seal container 20, also stator 41 can be fixed on the inner side of seal container 20.Therefore contacted by the outer circumferential face 71 of the inner peripheral surface 81 with stator 41 that make seal container 20, and reduce its area of contact, thus can take into account stator 41 reliably fixing and improve the internal diameter roundness of stator 41.By the region contacted with the inner peripheral surface 81 of seal container 20 in the outer circumferential face 71 of stator 41 is defined in protuberance 77, thus area of contact can be reduced.

In the present embodiment, the incised notch portion 73 of outer circumferential face 71 forming the divided-iron core 74 of stator core 43 is divided into two recess 72 regions each other: be connected with incised notch portion 73 and do not form the non-contact area 78 of protuberance 77 and be connected with any one of two recesses 72 and be formed with the contact area 79 of protuberance 77.In addition, although also the position relationship of non-contact area 78 with contact area 79 can be put upside down, when non-contact area 78 is positioned at recess 72 side, protuberance 82 can not enter into recess 72 root.Therefore in order to make the fastening force based on protuberance 82 increase, preferably contact area 79 is arranged at recess 72 side.Non-contact area 78 can at random set with the area ratio of contact area 79.

In the present embodiment, the stator 41 of motor 40 is embedded in the inner side of seal container 20 by hot charging, thus the inner peripheral surface 81 of seal container 20 contacts with protuberance 77.At this, hot charging refers to following method: under the state making its thermal expansion heating the internal diameter seal container 20 less than the external diameter of stator 41, stator 41 is embedded seal container 20, and the thermal shrinkage then utilizing seal container 20 to carry out, is fixed on seal container 20 by stator 41.When the stator 41 of motor 40 being fixed on the inner side of seal container 20 by means of only hot charging, likely because the internal diameter roundness of stator core 43 is deteriorated, the space between stator 41 and rotor 42 becomes uneven, thus causes the uneven sound of magnetic force.But in the present embodiment, due to the multiple positions at the stator 41 of motor 40 and the mutual correspondence of seal container 20, two protuberances 82 enter two recesses 72 and sandwich the part being formed with incised notch portion 73 of the stator 41 of motor 40, thus can reduce the fixation degree based on hot charging.That is, by the restraint location of hot charging in the outer circumferential face 71 of stator core 43, contact area 79 can be only limitted to.Supposing have employed does not have non-contact area 78, but the structure that the incised notch portion 73 of the outer circumferential face 71 of divided-iron core 74 and two recesses 72 region entirety each other contacts with the inner peripheral surface 81 of seal container 20, with by means of only hot charging the stator 41 of motor 40 is fixed on compared with the structure of the inner side of seal container 20, also can reduce the area of the restraint location of hot charging.Therefore, it is possible to improve the internal diameter roundness of stator core 43, thus the generation of the uneven sound of magnetic force can be suppressed.In addition, the stator 41 of motor 40 also can by cold embedding and be embedded in the inner side of seal container 20.

In the present embodiment, two recess 72 separate configuration are in the both sides of the middle position of multiple divided-iron cores 74 circumferencial direction each other.In addition, the center line of the middle position of the circumferencial direction representing divided-iron core 74 is shown with dot and dash line D in fig .9.

In addition, incised notch portion 73 can be there is no at two recesses 72 of the stator 41 of motor 40 yet.No matter with or without incised notch portion 73, all by making two protuberances 82 in multiple positions of the stator 41 of motor 40 and the mutual correspondence of seal container 20, enter two recesses 72, part between two recesses 72 sandwiching stator 41, thus the stator 41 of motor 40 is fixed on the inner side of seal container 20.

Below, in order to manufacturing the structure of device of compressor 12, the method manufacturing compressor 12, the effect that obtained by this device and the method be described.

To the explanation of structure

Figure 10 is the plan view manufacturing the device of compressor 12 that is the compression mechanism manufacturing apparatus 90 of present embodiment and compressor 12.Figure 11 is the longitudinal section of compression mechanism manufacturing apparatus 90 and compressor 12.In addition, the compressor 12 manufactured in way is carried out reduced representation by Figure 10 and Figure 11.

As shown in figs.10 and 11, compression mechanism manufacturing apparatus 90 possesses: as the compression compressing fixture 91 of stamping press and the pressing fixture 95 as liner fixture.

Compressing fixture 91 acts on radial power F from the outer circumferential face 83 of outside to seal container 20 of seal container 20, thus as described later, form two protuberances 82 along the circumferential direction arranged at the inner peripheral surface 81 of seal container 20, and make two protuberances 82 enter two recesses 72.Now, seal container 20 is in does not install container cover 27, only has the state of container body 26.Pressing fixture 95 acts on radial power G from the inner peripheral surface 70 of inner side to stator 41 of stator 41, thus as described later, suppresses the distortion of the inner peripheral surface 70 of the stator 41 caused by the power F from compressing fixture 91.

As mentioned above, two recesses 72 are formed at multiple positions of the circumferencial direction of the outer circumferential face 71 of stator 41.Therefore compressing fixture 91 makes radial power F act on the position corresponding with the plurality of position of the outer circumferential face 83 of seal container 20.Pressing fixture 95 makes radial power G act on the position corresponding with the plurality of position of the inner peripheral surface 70 of stator 41.In the present embodiment, compressing fixture 91 makes radial power F act on three positions of the outer circumferential face 83 of seal container 20.Pressing fixture 95 makes radial power G act at least three positions of the inner peripheral surface 70 of stator 41.

Pressing fixture 95 is configured to comprise driving mechanism 96 and external mold 97, and this external mold 97 is radially driven by driving mechanism 96, and contacts with the inner peripheral surface 70 of stator 41.The power G of above-mentioned radial direction is the pressing force of external mold 97 relative to the inner peripheral surface 70 of stator 41.More driven in the outside of external mold 97 to radial direction by driving mechanism 96, this pressing force is larger, and more driven the inner side of external mold 97 to radial direction by driving mechanism 96, this pressing force is less.Therefore radial power G suitably can be adjusted by driving mechanism 96.

As driving mechanism 96, as long as external mold 97 radially can be driven, then arbitrary mechanism can be adopted.Such as, the mechanism radially driving external mold 97 by oil pressure or air pressure can be adopted, also can adopt the mechanism that mode of execution 2 or 3 described later is such.

To the explanation of method

As the operation that the manufacture method of compressor 12 that is the compression mechanism making process of present embodiment possess, there is following operation.

Storage operation: the operation being inner side compressing mechanism 30 being accommodated in seal container 20.In addition, seal container 20, for not install container cover 27, only has the state of container body 26.

Setting process: be the operation stator 41 of motor 40 being arranged at the inner side of seal container 20.

Manufacturing procedure: be that multiple positions of the circumferencial direction of the inner peripheral surface 81 to seal container 20 are heated, and the multiple positions after heating are processed, thus form the operation entering two protuberances 82 of two recesses 72.In this operation, radial power F is made to act on the outer circumferential face 83 of seal container 20 from the outside of seal container 20 by compressing fixture 91, thus form two protuberances 82 along the circumferential direction arranged at the inner peripheral surface 81 of seal container 20, and above-mentioned two protuberances 82 are made to enter two recesses 72.Meanwhile, make radial power G act on the inner peripheral surface 70 of stator 41 from the inner side of stator 41 by pressing fixture 95, thus suppress the distortion of the inner peripheral surface 70 of the stator 41 caused by the power F from compressing fixture 91.

Fixed work order: be make the thermal shrinkage of two protuberances 82, utilizes two protuberances 82 to sandwich the part being formed with incised notch portion 73 of the stator 41 of motor 40, thus the stator 41 of motor 40 is fixed on the operation of the inner side of seal container 20.

Closing step: the operation being one end of the opening by container cover 27 closed container main body 26.

Above-mentioned 5 operations are implemented according to the order of storage operation, setting process, manufacturing procedure, fixed work order, closing step.

Below, manufacturing procedure and fixed work order are described.

Figure 12, Figure 13 and Figure 14 are the stator 41 of motor 40 and the partial sectional views of seal container 20 in each operation for the stator 41 of motor 40 being fixed on the inner side of seal container 20.Figure 12, Figure 13 and Figure 14, specifically represent a part for section for stator core 43 for stator 41 and a part for the section of the container body 26 of seal container 20.In addition, in Figure 12, Figure 13 and Figure 14, omit the hatching representing section.

In manufacturing procedure, as shown in figure 12, in the outer circumferential face 83 of seal container 20, by and two recesses 72 of each fixing part 76 between position corresponding to central position centered by certain scope, from the outside of seal container 20, local heating is carried out to part opposed with each fixing part 76 seal container 20.After make seal container 20 thermal expansion by heating, as shown in figure 13, compressing fixture 91 is pressed as the crow flies from the outside of seal container 20 towards two recesses 72.Specifically, will there is the width width more smaller than recess 72 and end face is two front ends 92 of the compressing fixture 91 of the tabular surface of quadrilateral shape, press towards two recesses 72 simultaneously.Thus, as shown in figure 14, the machining hole 84 equal with front end 92 width of compressing fixture 91 is formed with at the outer circumferential face 83 of seal container 20.Two protuberances 82 entering two recesses 72 are formed at the inner peripheral surface 81 of seal container 20.That is, the caulking part 85 with two riveting points is formed.Separately a compressing fixture 91 is used to three fixing parts 76.That is, three caulking parts 85 are formed with three compressing fixtures 91.Three caulking parts 85 are by almost pressing on three positions of the outer circumferential face 71 of stator core 43 by three compressing fixtures 91 and formed simultaneously.

In fixed work order, as shown in figure 14, the seal container 20 after thermal expansion cools.If seal container 20 cools, then by thermal shrinkage, two protuberances 82 are furthered towards the center of heated scope.Therefore by two protuberances 82, by along the circumferential direction fastening for two close recesses 72 of fixing part 76.Thus the stator 41 of the motor 40 comprising stator core 43 is fixed on seal container 20.Owing to not being as the fixation method of existing hot charging, the stator 41 of motor 40 is fixed by the power by radial direction, but by the power of circumferencial direction, is fixed by the stator 41 of motor 40, therefore, it is possible to reduce the distortion of giving stator core 43.In addition, due to different from the existing fixation method of arc spot welding and laser bonding that utilizes, perforation processing is not implemented to seal container 20, therefore also do not worry that foreign matter is mixed into or refrigrant leakage.

Figure 15 is the E direction view of Figure 14.That is, Figure 15 is the figure of the outer circumferential face 83 observing seal container 20 from the E direction shown in Figure 14.

As shown in figure 15, in manufacturing procedure, seal container 20 is locally heated, such as, because of the impact of heat, seal container 20 is softened at the heated perimeter 93 of circle.If two of compressing fixture 91 front ends 92 are pressed on heated perimeter 93, then form two close machining holes 84 at the outer circumferential face 83 of seal container 20.In the position of the correspondence of the inner peripheral surface 81 of seal container 20, form two protuberances 82.In fixed work order, seal container 20 cools, and is furthered by two protuberances 82 towards heated center 94.

In manufacturing procedure, if increase the intrusion H (with reference to Figure 14) of compressing fixture 91, then the thickness K (with reference to Figure 14) in the minimum wall thickness (MINI W.) portion of seal container 20 reduces gradually.At this, the thickness K in minimum wall thickness (MINI W.) portion refers to the distance between the root and machining hole 84 of the protuberance 82 being formed at seal container 20.With the increase of the degree of depth J (with reference to Figure 14) of machining hole 84, intrusion H increases.In addition, the degree of depth J of machining hole 84 is substantially equal from the length that inner peripheral surface 81 is outstanding with protuberance 82.And the thickness K in minimum wall thickness (MINI W.) portion is determined by the degree of depth J of machining hole 84.On the basis of guaranteeing intrusion H, machining hole 84 must be formed, the thickness K in minimum wall thickness (MINI W.) portion become less than the thickness of slab of seal container 20 go out the value of the roughly degree of depth J of machining hole 84.If increase intrusion H and increase the degree of depth J of machining hole 84, then the thickness K in the minimum wall thickness (MINI W.) portion of seal container 20 is thinning, thus when interior pressure acts on seal container 20, refrigeration agent likely leaks from this minimum wall thickness (MINI W.) portion.Therefore in the scope that can meet the compressive strength required by seal container 20, the maximum permissible value of the degree of depth J of machining hole 84 is determined.If the thickness K in minimum wall thickness (MINI W.) portion is more than 0.5 times of the thickness of slab of seal container 20, then usually fully can meet the compressive strength of seal container 20.Such as, if the thickness of slab of seal container 20 is 2.6mm, then the degree of depth J of machining hole 84 is made to be below 1.3mm.Therefore intrusion H also becomes less than 0.5 times of the thickness of slab of seal container 20.

In the present embodiment, be formed with fixing part 76 in three positions of the outer circumferential face 71 of stator 41, but preferably three positions are configured to 120 ° equidistant.As shown in figure 13, in manufacturing procedure, the front end 92 of compressing fixture 91 is directly contacted with seal container 20, thus makes seal container 20 plastic deformation.Thus, caulking part 85 is formed at three positions.Owing to forming two riveting points a position, therefore riveting point Volume Composition is six.1 compressing fixture 91 is used to a caulking part 85.That is, compressing fixture 91 total arranges three.As shown in Figure 10, power F central role towards seal container 20 of seal container 20 is put on from compressing fixture 91.The equal and opposite in direction of three power F.

Figure 16 is the plan view of the pressing fixture 95 of compression mechanism manufacturing apparatus 90 in manufacturing procedure and the stator 41 of motor 40.Figure 16 represents the pressing driving mechanism 96 of fixture 95 and external mold 97, stator core 43 with stator 41 particularly.

Because the rigidity of the stator 41 formed by laminated electromagnetic steel plate is lower, therefore when radially the front end 92 of compressing fixture 91 being pressed on the outer circumferential face 83 of seal container 20, the inner peripheral surface 70 of stator 41 is likely out of shape, thus the internal diameter roundness of stator 41 is deteriorated.As its countermeasure, in the present embodiment, as shown in figure 16, the G that exerts all one's strength radially acts on the inner peripheral surface 70 of stator 41, and in order to suppress the distortion of the inner peripheral surface 70 of stator 41 to use pressing fixture 95.

Pressing fixture 95 has external mold 97, and this external mold 97 is by the radial drive of driving mechanism 96 along stator 41, and active force G.Being split at least partially of this external mold 97 is identical with the quantity of the teeth portion 75 being formed at stator core 43.In order to contact with the inner peripheral surface 70 of stator 41, the peripheral shape of the part after the segmentation of external mold 97, becomes the circular shape identical with the inner circumferential shape of teeth portion 75.Part after the segmentation of the external mold 97 of pressing fixture 95, presses teeth portion 75 opposed respectively with the power G suitably set.In addition, in the part after the segmentation of the external mold 97 of pressing fixture 95, can only a part contact with teeth portion 75, remainder does not contact with teeth portion 75.That is, the position becoming G=0 can also be there is.

To the explanation of effect

Below, the effect that present embodiment plays is described.

In the present embodiment, the pressing fixture 95 of compression mechanism manufacturing apparatus 90, makes radial power G act on the inner peripheral surface 70 of stator 41 from the inner side of stator 41, thus suppresses the distortion of the inner peripheral surface 70 of the stator 41 caused by the power F from compressing fixture 91.Therefore according to the present embodiment, the internal diameter roundness of stator 41 can be improved.

In the present embodiment, form two protuberances 82 entering two recesses 72 of the outer circumferential face 71 being arranged at stator 41, and the part utilizing two protuberances to sandwich between two recesses 72 is fixed.Therefore according to the present embodiment, the arc spot welding or the laser bonding that produce foreign matter can not be needed, thus the higher compressor 12 of the few reliability of foreign matter amount can be manufactured.In addition, due to the confining force of stator 41 can be guaranteed fully, therefore, it is possible to significantly reduce the outer circumferential face 71 of the stator 41 undertaken by hot charging and the area of contact of the inner peripheral surface 81 of seal container 20.Therefore, it is possible to significantly reduce hot charging to the fastening force of stator 41, thus can the higher compressor 12 of manufacturing property.

In the present embodiment, by when formation enters two protuberances 82 of two recesses 72 of the outer circumferential face 71 being arranged at stator 41, from the inner side active force G of stator 41, thus the internal diameter roundness that can reduce stator 41 is deteriorated.Therefore according to the present embodiment, on-stream being difficult to produces the uneven sound of magnetic force, can manufacture the higher compressor of reliability 12.

In the present embodiment, at two protuberances 82 that the seal container 20 of compressor 12 is formed, enter two recesses 72 formed at the stator 41 of the motor 40 of compressor 12, and the part being formed with incised notch portion 73 sandwiched between above-mentioned two recesses 72, thus the stator 41 of motor 40 is fixed on the inner side of seal container 20.Owing to having incised notch portion 73, thus it is concentrated to relax the stress becoming the key factor of loss.In addition, be formed with protuberance 77 in the incised notch portion 73 of the outer circumferential face 71 of stator 41 and two recess 72 regions each other, this protuberance 77 is than protruding outside to radial direction of other regions of the outer circumferential face 71 of stator 41.Outer circumferential face 71 entirety replacing stator 41 contacts with the inner peripheral surface 81 of seal container 20, and protuberance 77 is contacted with the inner peripheral surface 81 of seal container 20, thus improves the internal diameter roundness of stator 41.Therefore according to the present embodiment, the reduction of motor efficiency can be suppressed.

According to the present embodiment, be deteriorated by the generation of the iron loss of the stator 41 by motor 40 and internal diameter roundness and suppress for irreducible minimum, thus the high and sealed electrical compressor that noise is little of motor efficiency can be obtained.Following sealed electrical compressor can be provided, namely, even if for the situation of Long-Time Service, also can not produce by the buffeting of the stator 41 of motor 40 cause noise, vibration the unfavorable condition such as increase, reliability is high and reduce and concentrate by the stress of stator 41 iron loss caused, the sealed electrical compressor that electrical efficiency is excellent.

According to the present embodiment, utilize two close protuberances 82 of seal container 20, between two recesses 72 of the stator 41 of motor 40, produce enough clamping forces, thus the stator 41 of motor 40 can be firmly fixed at seal container 20.Following compressor 12 can be obtained, namely, even if for the situation of sealed electrical compressor Long-Time Service, common and the excessive power that also can produce in resistance to running, and the unfavorable condition such as noise, vibration increase caused by the buffeting of the stator 41 of motor 40 can not be produced, compressor 12 that reliability is high.In addition, the power of bearing owing to can make the stator 41 of motor 40 reduces, and can suppress the generation of being concentrated the iron loss caused by stress, therefore brings the raising of performance.

The material of seal container 20 is generally iron.Near 600 DEG C, the yield point of iron sharply declines.Yield point is started like this at this temperature that sharply declines, be called softening temperature.That is, the temperature that iron is softening is 600 DEG C.Owing to making the yield point of the material of seal container 20 decline, and make seal container 20 be deformed into certain shape efficiently, temperature when therefore heating is more than the temperature of material softening and is less than fusing point.By heating, yield point is declined, thus make seal container 20 plastic deformation, suppress the resilience of the radial direction of the seal container 20 formed after protuberance 82, that is, suppress returning of protuberance 82.In addition, constant intrusion H (with reference to Figure 14) can efficiently and reliably be guaranteed.Refer to that protuberance 82 enters the degree of depth of recess 72 at this intrusion H.As described above, the material of seal container 20 is iron, and its softening temperature is 600 DEG C.And the fusing point of iron is about 1560 DEG C.Therefore, the heating-up temperature of local heating is preferably more than 600 DEG C and less than 1500 DEG C.Certainly, if material is the material beyond iron, then heating-up temperature changes, and is preferably more than the softening temperature of its material and is less than fusing point.

Heated perimeter 93 all comprises the machining hole 84 at the pressing position becoming compressing fixture 91, thus characteristic when can use the material at high temperature of seal container 20 as described above, reliably form protuberance 82.In addition, the pressing-in force for the formation of protuberance 82 reduces, thus can reduce when compressor 12 is assembled in the distortion that stator core 43 produces.In addition, the position overlapping with the center of two recesses 72 is become by making the heated center 94 of seal container 20, thus after seal container 20 reliably forms two protuberances 82, two protuberances 82 carrying out thermal shrinkage towards heated center 94 can be utilized, sandwich two recesses 72 securely.

By reliably forming the protuberance 82 of seal container 20 like this, and the protuberance 82 of seal container 20 sandwiches between the recess 72 of the stator 41 of motor 40 securely, fix the stator 41 of motor 40, therefore for the compressor 12 of Long-Time Service, can compression resistant machine 12 operate in the common and excessive power that produces, and the fixing of the stator 41 of the firm motor 40 of buffeting can not be produced.In addition, even if when fixing dual-purpose hot charging to stator 41, the area of contact of stator 41 and the hot charging of seal container 20 also significantly can be reduced than ever.

The stator 41 of motor 40 is sandwiched by the protuberance 82 of seal container 20, and supported relative to the axis of compressor 12, relative to tangent direction, the stator 41 of motor 40 sandwiches not only by the protuberance 82 based on seal container 20 supporting carried out, and utilizes the rigidity of the protuberance 82 of seal container 20 also to be supported.To obtain the mode of required constant intensity accordingly with the acceleration produced at fixing part 76, select solid shape.Such as, by increasing the sectional area of protuberance 82 or increasing the number of fixing part 76, constant intensity can be made to increase.In addition, can to meet relative to the conveying of the compressor 12 producing axial acceleration, the mode of deviating from strength specification to fall etc., the width of the recess 72 of selected stator 41.

In addition, in the present embodiment, in order to be formed with multiple recesses 72 of channel-shaped in multiple positions of stator core 43, stator core 43 can be formed by the electromagnetic steel plate of stacked same type, and do not need to prepare a lot of type, therefore, it is possible to suppression cost, the risk of assembly defect also can be reduced further.

In addition, in the present embodiment, in order to ensure the constant intensity that stator 41 and seal container 20 are higher, be by after stator 41 and seal container 20 hot charging in above-mentioned setting process, enforcement manufacturing procedure and fixed work order, but hot charging is optional.

When carrying out hot charging, after by stator 41 and seal container 20 hot charging, local heating is carried out to the position corresponding with the recess 72 of stator 41 of the outer circumferential face 83 of seal container 20.Then, compressing fixture 91 is pressed on the outer circumferential face 83 of seal container 20 towards radially inner side, form the protuberance 82 engaged with recess 72 at seal container 20.And the thermal shrinkage caused by the cooling of seal container 20, with multiple protuberances 82 of seal container 20 by fastening between recess 72.Stator 41 can be firmly fixed at seal container 20 thus, and carry out based on thermal shrinkage fixing time, can not produce and stator 41 is stably fixed on seal container 20 with rocking.

In the present embodiment, due to between the protuberance 82 of the seal container 20 when stator 41 and thermal shrinkage, do not produce the intensity of the small degree of rocking, by stator 41 hot charging in seal container 20, therefore, compared with the situation only adopting existing hot charging to be fixed, the area of contact of the hot charging of stator 41 and seal container 20 can significantly be reduced.Therefore, it is possible to reducing effect is in the stress of stator 41, thus the performance of compressor 12 can be improved.

In the present embodiment, stator core 43 becomes the parts engaged by the divided-iron core 74 of multiple T font as ring-type.At the recess 72 that the outer circumferential face 71 of stator core 43 is formed, be arranged at each divided-iron core 74.Suppose that two close recesses 72 are crossed over two divided-iron cores 74 and formed, then the power owing to acting on when two protuberance 82 thermal shrinkages of correspondence, mutually to push the mode effect of two divided-iron cores 74, therefore likely make the internal diameter roundness of stator core 43 be deteriorated.On the other hand, as shown in Figure 9, at close two recesses 72 to clamp the mode of the middle position of the circumferencial direction of a divided-iron core 74, be formed at this one divided-iron core 74 when, even if when two protuberances 82 of correspondence have carried out thermal shrinkage, also by the rigidity of this divided-iron core 74, good internal diameter roundness can be kept, therefore, it is possible to suppress the generation of the uneven sound of magnetic force.

In the present embodiment, as mentioned above, replace and the recess 72 of stator 41 is set to channel-shaped, such as, also can be set to the lower opening of quadrilateral shape.Even if in this case, stator 41 can be fixed on seal container 20 too.Such as, the lower opening of the quadrilateral shape of stator 41, can be formed by stacked two kinds of electromagnetic steel plates.By the lower opening of stator 41 is set to quadrilateral shape, stator 41 is not only clamped by the protuberance 82 of seal container 20, and can be supported, therefore, it is possible to more firmly stator 41 is fixed on seal container 20 by the rigidity of the protuberance 82 of seal container 20 self.

Mode of execution 2

For present embodiment, the difference of main explanation and mode of execution 1.

Figure 17 is the compression mechanism manufacturing apparatus 90 of present embodiment and the longitudinal section of compressor 12.In addition, Figure 17 and Figure 11 is same, and the compressor 12 manufactured in way is carried out reduced representation.

As shown in figure 17, the driving mechanism 96 of the pressing fixture 95 of compression mechanism manufacturing apparatus 90 also can be installed as chuck mechanism.

Mode of execution 3

Figure 18 is the compression mechanism manufacturing apparatus 90 of present embodiment and the longitudinal section of compressor 12.In addition, Figure 18 and Figure 11 is same, and the compressor 12 manufactured in way is carried out reduced representation.

As shown in figure 18, the driving mechanism 96 of the pressing fixture 95 of compression mechanism manufacturing apparatus 90, also can be installed as wedge mechanism.That is, in the present embodiment, pressing fixture 95 is configured to the extraction rod 98 and the external mold 97 that comprise wedge shape, and this external mold 97 forms the hollow portion for extracting the taper that rod 98 inserts out, and contacts with the inner peripheral surface 70 of stator 41.By being extracted out downwards from the hollow portion of external mold 97 by extraction rod 98, thus external mold 97 utilizes wedge shape effect and radially drives, and power G acts on the inner peripheral surface 70 of stator 41.

Mode of execution 4

Figure 19 is the compression mechanism manufacturing apparatus 90 of present embodiment and the plan view of compressor 12.Figure 20 is the longitudinal section of compression mechanism manufacturing apparatus 90 and compressor 12.In addition, Figure 19 and Figure 20 and Figure 10 and Figure 11 is same, and the compressor 12 manufactured in way is carried out reduced representation.Compressing fixture 91 is omitted in Figure 19.

As shown in Figure 19 and Figure 20, compression mechanism manufacturing apparatus 90, except possessing the compressing fixture 91 identical with mode of execution 1 and pressing except fixture 95, also possesses and compresses stamping press that is other pressing fixtures 99.

As Embodiment 1, after carrying out local heating to container body 26, when utilizing compressing fixture 91 to pressurize, because of the pressurization of compressing fixture 91, the thermal shrinkage etc. of container body 26, the end of the opening of container body 26 likely deforms.In the present embodiment, in order to reduce this amount of deformation, utilizing from the outside of seal container 20 between the upper-end surface of pressing fixture 99 pairs of stators 41 and the upper-end surface of seal container 20 and clamping, and active force I.

That is, under the state of compressing fixture 91 after seal container 20 heats, two protuberances 82 are formed.Above-mentioned two protuberances 82 carry out thermal shrinkage after seal container 20 heats, thus the part between two recesses 72 sandwiching stator 41, but the power now making seal container 20 be out of shape plays a role.Therefore in the present embodiment, as shown in figure 19, pressing fixture 99, from the outside of seal container 20, makes radial power I act on the outer circumferential face 83 of seal container 20, thus suppresses the distortion of the outer circumferential face 83 of the seal container 20 caused by the thermal shrinkage of two protuberances 82.Specifically, as shown in figure 20, pressing fixture 99 makes radial power I act in the two ends of the axis of seal container 20 than compressing mechanism 30 close between one end of stator 41 and stator 41.At this, in the two ends of the axis of seal container 20, refer to one end of the opening of container body 26 close to one end of stator 41 than compressing mechanism 30.Such as, as shown in figure 20, press fixture 99 make radial power I act on the inner peripheral surface 70 of stator 41 be separated at equal intervals four positions.That is, four pressing fixtures 99 are to configure at equal intervals, clamp seal container 20 by these pressing fixtures 99.Thereby, it is possible to suppress the distortion of seal container 20.In addition, the quantity of the position of radial power I effect, the i.e. number of units of pressing fixture 99 is made to be not limited to four, as long as be two or more.

Above, embodiments of the present invention are illustrated, but the several combinations in these mode of executions can be implemented.Or also can partly implement in these mode of executions any one or several.Such as, in the explanation of these mode of executions, only can adopt any one in the parts be described as " portion ", also can adopt several combination in any.In addition, the present invention is not limited to these mode of executions, but can carry out various change as required.

Claims

1. a compression mechanism manufacturing apparatus, manufactures following compressor,

Described compressor possesses: motor, and it has stator, and is formed with two recesses along the circumferential direction arranged at the outer circumferential face of described stator; Compressing mechanism, it is by described motoring; And container, it receives described stator and described compressing mechanism,

The feature of described compression mechanism manufacturing apparatus is to possess:

Compressing fixture, its outside from described container to the power of the outer circumferential face effect radial direction of described container, thus forms two protuberances along the circumferential direction arranged at the inner peripheral surface of described container, and makes described two protuberances enter described two recesses; And

Pressing fixture, its inner side from described stator to the power of the inner peripheral surface effect radial direction of described stator, thus suppresses the distortion of the inner peripheral surface of the described stator caused by the power from described compressing fixture.

2. compression mechanism manufacturing apparatus according to claim 1, is characterized in that,

Described two recesses are formed at multiple positions of the circumferencial direction of the outer circumferential face of described stator,

With the described multiple position corresponding position of described compressing fixture to the outer circumferential face of described container acts on radial power,

With the described multiple position corresponding position of described pressing fixture to the inner peripheral surface of described stator acts on radial power.

3. compression mechanism manufacturing apparatus according to claim 1, is characterized in that,

Described pressing fixture is configured to comprise driving mechanism and external mold, and this external mold is radially driven by described driving mechanism, and contacts with the inner peripheral surface of described stator.

4. compression mechanism manufacturing apparatus according to claim 1, is characterized in that,

Described pressing fixture is configured to the extraction rod and the external mold that comprise wedge shape, and this external mold is formed for the described hollow portion extracting the taper that rod inserts out, and contacts with the inner peripheral surface of described stator.

5. the compression mechanism manufacturing apparatus according to any one in Claims 1 to 4, is characterized in that,

Described compressing fixture by under the state that heats, forms described two protuberances at described container,

Thermal shrinkage is carried out after described two protuberances are heated by described container, thus the part between described two recesses sandwiching described stator,

Described compression mechanism manufacturing apparatus also possesses other pressing fixtures, described other press the outside of fixtures from described container to the power of the outer circumferential face effect radial direction of described container, thus suppress the distortion of the outer circumferential face of the described container caused by the thermal shrinkage of described two protuberances.

6. compression mechanism manufacturing apparatus according to claim 5, is characterized in that,

Other pressing fixtures described in the two ends of the axis of described container, than described compressing mechanism near acting on radial power between one end of described stator and described stator.

7. a compression mechanism making process, for the manufacture of following compressor,

The feature of described compression mechanism making process is,

Utilize compressing fixture from the outside of described container to the power of the outer circumferential face effect radial direction of described container, thus form two protuberances along the circumferential direction arranged at the inner peripheral surface of described container, and make described two protuberances enter described two recesses,

Utilize pressing fixture from the inner side of described stator to the power of the inner peripheral surface effect radial direction of described stator, thus suppress the distortion of the inner peripheral surface of the described stator caused by the power from described compressing fixture.