CN108071838A - Motor-driven valve and refrigerating circulation system - Google Patents
Motor-driven valve and refrigerating circulation system Download PDFInfo
- Publication number
- CN108071838A CN108071838A CN201711034084.0A CN201711034084A CN108071838A CN 108071838 A CN108071838 A CN 108071838A CN 201711034084 A CN201711034084 A CN 201711034084A CN 108071838 A CN108071838 A CN 108071838A
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- Prior art keywords
- mentioned
- fully sheathed
- sheathed case
- valve
- pole plate
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- 210000000515 tooth Anatomy 0.000 description 67
- 239000000463 material Substances 0.000 description 19
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- 239000000126 substance Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000003754 machining Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
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- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/35—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Motor Or Generator Frames (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The motor-driven valve of the present invention reduces the leakage magnetic flux between the yoke (413A) of coil part (41A, 41B) and pole plate (42A) and easily assembles coil part.The magnet rotor (43) and pole plate (42A) of stepper motor (40) are disposed in the inside of fully sheathed case (8).Coil part (41A, 41B) is disposed in the outside of fully sheathed case (8).Make enlarged portion (413A1) being contacted in top plate (81) of fully sheathed case (8) of yoke (413A), the shared base portion (42A1) of pole plate (42A) is made to be contacted with the inner surface face of top plate (81).Make the periphery plane-plane contact of the enlarged portion (413B1,413C1) of yoke (413B, 413C) and the side surface part (82) of fully sheathed case (8), make the shared base portion (42BC1) of pole plate (42BC) and the inner circumferential plane-plane contact of side surface part (82).
Description
Technical field
The present invention relates to the motor-driven valves and refrigerating circulation system for freeze cycle etc..
Background technology
Now, as this motor-driven valve, there is the rotation by the magnet rotor of stepper motor come via feed screw mechanism
Make working shaft linear movement so as to the motor-driven valve that valve port is opened and closed using the valve member with working shaft connection.Such as in day
Such motor-driven valve disclosed in this Unexamined Patent 10-220614 publications (patent document 1).
The motor-driven valve of the patent document 1 is sealed using the valve chamber of valve casing and fully sheathed case to becoming the flow path of refrigerant etc.
It closes, the magnet rotor of stepper motor is configured at the inside of fully sheathed case, and stepper motor with the magnetic pole tooth for being opposite to the magnet rotor
Coil part be configured at the outside of fully sheathed case.Accordingly, for the stator coil (magnet exciting coil) of coil part, it can prevent freezing from following
Influence caused by the refrigerant of the high pressure of ring, and gas-tight sealization of conducting wire is not required etc..
Prior art literature
Patent document 1：Japanese Unexamined Patent Publication 10-220614 publications
The content of the invention
Problems to be solved by the invention
In the technology of above-mentioned patent document 1, such as shown in figure 21, in order to utilize stator coil a (magnet exciting coil)
Excitation efficiently is carried out to magnetic pole tooth b, the end face of yoke (yoke portion) d with stator coil a in fully sheathed case c is made by heat treatment
Corresponding part partly becomes magnetic substance, and the other parts of fully sheathed case c is made to become nonmagnetic material.
However, the magnetic body portion of fully sheathed case c need to be formed at the extremely narrow region around fully sheathed case c so as to yoke
The end face of d corresponds to.In addition, in order to reduce leakage magnetic flux inhibit the reduction of the magnetic efficiency of magnetic circuit, it is necessary to make the part of magnetic substance with
The line of demarcation of nonmagnetic material part becomes clear and definite, but is difficult to clear and definite in the punch components of the smaller thin-walled of thermal capacity by heat treatment
It distinguishes to form such magnetic body portion and nonmagnetic material portion boundary in ground.Also, magnetic body portion is needed compared with yoke d
Correct position is formed at, and the correct positioning with local magnetic body portion cooperation is also required in the assembling of coil part,
So as to which manufacturing management becomes difficult.
The problem of the present invention is, inside and the motor of fully sheathed case are disposed in the magnet rotor and magnetic pole tooth of motor part
The coil part in portion is disposed in the motor-driven valve in the outside of fully sheathed case, by reducing the magnetic flux between the yoke of coil part and magnetic pole tooth
By the leakage magnetic flux of part reduce magnetic loss, and improve the degree of freedom when assembled of coil part.
The motor-driven valve of scheme 1 possesses motor part, valve system portion and fully sheathed case, and above-mentioned valve system portion is arranged on valve casing, and leads to
Crossing the rotation driving in said motor portion makes valve member retreat, so as to which valve port be opened and closed, above-mentioned fully sheathed case and above-mentioned valve casing one
Rise above-mentioned valve system portion is closed, said electric valve is characterized in that, the magnet rotor in said motor portion and with the magnetism
The opposed magnetic pole tooth in the periphery of rotor is disposed in the inside of above-mentioned fully sheathed case, and the coil part in said motor portion is disposed in above-mentioned envelope
The outside of closed box connects the shared base portion of above-mentioned magnetic pole tooth and is contacted with the inner surface face of above-mentioned fully sheathed case, and in above-mentioned coil part
Yoke be equipped with enlarged portion, the enlarged portion is opposed with above-mentioned shared base portion and width is bigger than the thickness of the yoke, and the expansion
Portion passes through its opposed faces and the appearance plane-plane contact of above-mentioned fully sheathed case, above-mentioned enlarged portion, above-mentioned fully sheathed case and above-mentioned shared base
Portion is stacked.
The motor-driven valve of scheme 2 is characterized in that, in the motor-driven valve recorded in scheme 1, above-mentioned enlarged portion is with above-mentioned opposed
Outer surface, above-mentioned shared base portion and the above-mentioned enlarged portion of the above-mentioned fully sheathed case of face contact are come with the rotation with above-mentioned magnet rotor in face
The parallel direction configuration of shaft.
The motor-driven valve of scheme 3 is characterized in that, in the motor-driven valve recorded in scheme 1, above-mentioned enlarged portion is with above-mentioned opposed
Outer surface, above-mentioned shared base portion and the above-mentioned enlarged portion of the above-mentioned fully sheathed case of face contact are come with the rotation with above-mentioned magnet rotor in face
The direction configuration that shaft is intersected.
The refrigerating circulation system of scheme 4 is the freeze cycle system for including compressor, condenser, expansion valve and evaporator
System, which is characterized in that the motor-driven valve recorded in operational version 1~3 is as above-mentioned expansion valve.
The effect of invention is as follows.
According to the motor-driven valve of scheme 1~3, due to making the shared base portion of connection magnetic pole tooth and the enlarged portion and fully sheathed case of yoke
Face contacts and enlarged portion, fully sheathed case and shared base portion are stacked, and institute so as to make shared base portion and yoke with reducing leakage magnetic flux
Enlarged portion is opposed, so as to be configured to be difficult to generate magnetic loss.Also, since yoke has compared with the contraposition of shared base portion
Degree of freedom in axial direction, thus need not higher precision be easy for assembling coil part.
According to the motor-driven valve of scheme 3, due to the direction for sharing base portion and enlarged portion is intersected with the rotation axis with magnet rotor
Configuration, so as to be easily stacked the enlarged portion, fully sheathed case and shared base portion in a manner of the top plate for clipping fully sheathed case, from
And easily carry out the positioning on rotation direction of principal axis.
According to the refrigerating circulation system of scheme 4, the effect identical with scheme 1~3 can be obtained.
Description of the drawings
Fig. 1 is the longitudinal section view of the motor-driven valve of the first embodiment of the present invention.
Fig. 2 is the longitudinal section view of the stator unit of the motor-driven valve of first embodiment.
Fig. 3 is the longitudinal section view of the stator unit of the motor-driven valve of first embodiment, fully sheathed case and pole plate.
Fig. 4 is the A-A sectional views in Fig. 3.
Fig. 5 is the B-B sectional views in Fig. 3.
Fig. 6 is the figure of an example of the intermediate member for showing the pole plate in first embodiment.
Fig. 7 is the figure of an example of the bending machining for showing the pole plate in first embodiment.
Fig. 8 is the figure for an example for showing the magnetic line of force in first embodiment.
Fig. 9 is the longitudinal section view of the stator unit of the motor-driven valve of second embodiment, fully sheathed case and pole plate.
Figure 10 is the longitudinal section view of the motor-driven valve of the 3rd embodiment.
Figure 11 is the produced by insert molding product of motor-driven valve of the 3rd embodiment and the longitudinal section view of reducing gear.
Figure 12 is the A-A direction views of Figure 11 and B-B direction view.
Figure 13 is the longitudinal section view of the pole plate in the motor-driven valve of the 3rd embodiment.
Figure 14 is the longitudinal section view for the variation for showing the pole plate in the motor-driven valve of the 3rd embodiment.
Figure 15 is the longitudinal section view of the motor-driven valve of the 4th embodiment.
Figure 16 is the longitudinal section view of the stator unit of the motor-driven valve of the 4th embodiment, fully sheathed case and pole plate.
Figure 17 is the bottom view and side view cutaway drawing of the pole plate on the top in the 4th embodiment.
Figure 18 is the figure of an example of the intermediate member for the pole plate for showing the middle part in the 4th embodiment.
Figure 19 is the top view and side view cutaway drawing of the pole plate of the lower part in the 4th embodiment.
Figure 20 is the figure for the refrigerating circulation system for showing embodiment.
Figure 21 is the figure of example the problem of illustrating existing motor-driven valve.
In figure：
10-stepper motor (motor part), 11-stator unit, 11A-coil part, 11B-coil part, 111-spool,
112-stator coil, 113A-yoke, 113A1-enlarged portion, 113A2-opposed faces, 113B-yoke, 113B1-expansion
Portion, 113B2-opposed faces, 113C-yoke, 113C1-enlarged portion, 113C2-opposed faces, 113D-yoke, 113D1-expansion
The portion of opening, 113D2-opposed faces, 114-frame, 115-resin moulded parts, 12A-pole plate, 12A1-shared base portion, 12B-
Pole plate, 12B1-shared base portion, 12C-pole plate, 12C1-shared base portion, 12D-pole plate, 12D1-base portion is shared,
12a-rectangular shaped poles tooth, 12b-rectangular shaped poles tooth, 12c-rectangular shaped poles tooth, 12d-rectangular shaped poles tooth, 13-magnet rotor,
9-fully sheathed case, 100-motor-driven valve, 20-stepper motor (motor part), 21-stator unit, 21A-coil part, 21B-coil
Portion, 211-spool, 212-stator coil, 213A-yoke, 213A1-enlarged portion, 213A2-opposed faces, 213B-yoke,
213B1-enlarged portion, 213B2-opposed faces, 213C-yoke, 213C1-enlarged portion, 213C2-opposed faces, 213D-magnetic
Yoke, 213D1-enlarged portion, 213D2-opposed faces, 214-frame, 215-resin moulded parts, 22A-pole plate, 22A1-altogether
With base portion, 22B-pole plate, 22B1-share base portion, 22C-pole plate, 22C1-share base portion, 22D-pole plate,
22D1-shared base portion, 22a-rectangular shaped poles tooth, 22b-rectangular shaped poles tooth, 22c-rectangular shaped poles tooth, 22d-rectangular shaped poles
Tooth, 23-magnet rotor, 200-motor-driven valve, 30-stepper motor (motor part), 31-stator unit, 31A-coil part,
31B-coil part, 311-spool, 312-stator coil, 313A-yoke, 313A1-enlarged portion, 313A2-opposed faces,
313B-yoke, 313B1-enlarged portion, 313B2-opposed faces, 313C-yoke, 313C1-enlarged portion, 313C2-opposed
Face, 313D-yoke, 313D1-enlarged portion, 313D2-opposed faces, 314-frame, 315-resin moulded parts, 32A-magnetic pole
Plate, 32A1-shared base portion, 32BC-pole plate, 32BC1-shared base portion, 32D-pole plate, 32D1-base portion is shared,
32-pole plate, 321-share base portion, 32a-approximation halfpace shape magnetic pole tooth, 32b-approximation halfpace shape magnetic pole tooth, 32c-closely
Like halfpace shape magnetic pole tooth, 32d-approximation halfpace shape magnetic pole tooth, 33-magnet rotor, 9 '-fully sheathed case, 300-motor-driven valve, 40-
Stepper motor (motor part), 41-stator unit, 41A-coil part, 41B-coil part, 411-spool, 412-stator line
Circle, 413A-yoke, 413A1-enlarged portion, 413A2-opposed faces, 413B-yoke, 413B1-enlarged portion, 413B2-right
Put face, 413C-yoke, 413C1-enlarged portion, 413C2-opposed faces, 413D-yoke, 413D1-enlarged portion, 413D2-
Opposed faces, 414-frame, 415-resin moulded parts, 42A-pole plate, 42A1-shared base portion, 42BC-pole plate,
42BC1-shared base portion, 42D-pole plate, 42D1-shared base portion, 42a-rectangular shaped poles tooth, 42b-rectangular shaped poles tooth,
42c-rectangular shaped poles tooth, 42d-rectangular shaped poles tooth, 43-magnet rotor, 8-fully sheathed case, 400-motor-driven valve, 50-valve system
Portion, 60-valve casing, 60A-valve chamber, the 61-the first junction block, the 62-the second junction block, 63-valve base part, 63a-valve port,
L-axis.
Specific embodiment
Next, the embodiment of the motor-driven valve of the present invention is illustrated referring to the drawings.Fig. 1 is first embodiment
The longitudinal section view of motor-driven valve, Fig. 2 are the longitudinal section views of the stator unit of the motor-driven valve of first embodiment, and Fig. 3 is the first implementation
The longitudinal section view of the stator unit of the motor-driven valve of mode, fully sheathed case and pole plate, Fig. 4 is the A-A sectional views in Fig. 3, and Fig. 5 is
B-B sectional views in Fig. 3.In addition, the concept of " upper and lower " in the following description with it is corresponding up and down in the attached drawing of Fig. 1.
The motor-driven valve 100 possesses the stepper motor 10 as " motor part ", valve system portion 50, valve casing 60 and by non-magnetic
Property body form fully sheathed case 9.Valve casing 60 is shaped generally as cylindrical shape by stainless steel etc., and has valve chamber 60A on the inside of it.
The periphery unilateral side of valve casing 60 is connected with the first junction block 61 turned on valve chamber 60A, and in the cylinder extended downwards from lower end
Shape portion is connected with the second junction block 62.Also, valve base part 63 has been fitted together to it in the valve chamber 60A sides of the second junction block 62.In valve seat
Component 63 and the circular valve port 63a connected with valve chamber 60A is formed on the inside of it.The cutting centered on axis L of valve port 63a
The rounded shape of face shape, valve chamber 60A can be turned on the second junction block 62 via valve port 63a.
Valve system portion 50 has support member 51, valve support 52, as the needle-valve 53 of " valve member " and working shaft 54.
Support member 51 is made of the synthetic resin of high sliding or is made of the sintering metal of high sliding, close to valve casing 60
End has the fixation metal parts 511 that integral stainless steel is set to by being insert-molded.Moreover, 51 profit of support member
The upper end of valve casing 60 is fixed on fixed metal parts 511.
Pilot hole 51a longer in the direction of the axisl is formed in support member 51, in pilot hole 51a, Neng Gouyan
Axis L directions, which are slidably fitted together to, cylindric valve support 52.Valve support 52 is set to coaxial with valve chamber 60A, and in the valve support
52 lower end is fixed with needle-valve 53.In addition, in valve support 52, spring fastening can be movably equipped with along axis L directions
52a, and compression helical spring 52b is equipped with the state of load as defined in being subject between spring fastening 52a and needle-valve 53.
Working shaft 54 is fixed on the center of the aftermentioned magnet rotor 13 of stepper motor 10, and in the periphery of the working shaft 54
It is formed with external thread part 54a.Also, in support member 51, and in the screw thread that pilot hole 51a is run through centered on axis L
Internal thread part 51b is formed in hole, the external thread part 54a and internal thread part 51b of working shaft 54 are screwed.Moreover, valve branch
The upper end of frame 52 engages with the lower end of working shaft 54, and valve support 52 is by working shaft 54 so as to the state branch rotatably dangled
Support.
In the upper end of valve casing 60, fully sheathed case 9 is airtightly fixed with by welding etc..Top in fully sheathed case 9 is fitted together to
There is guide part holding cylinder 91, and the cylindrical portion 91a in the center of the guide part holding cylinder 91 has been embedded in guide part 92.Guide part
92 have pilot hole 92a in center, and the upper end of working shaft 54 is rotatably embedded in pilot hole 92a.In cylindrical portion
The periphery of 91a is equipped with spirally-guided wire body 93, and equipped with the movable limiting component being screwed with spirally-guided wire body 93
94。
Protrusion 13a is formed in magnet rotor 13, protrusion 13a goes to movable limit with the rotation of magnet rotor 13
Position component 94, thus movable limiting component 94 by the thread binding with spirally-guided wire body 93 and turn round while on move down
It is dynamic.Moreover, movable limiting component 94 is by being connected to the lower end limiter 93a of spirally-guided wire body 93, to obtain working shaft 54
Lowest positions at rotary stopper effect.Also, movable limiting component 94 is by being connected to the upper of spirally-guided wire body 93
Limiter 93b is held, to obtain the rotary stopper effect at the top position of working shaft 54.
Stepper motor 10 is arranged on the inside and outside of fully sheathed case 9.That is, stepper motor 10 is made of such as lower component：It is installed on fully sheathed case 9
Periphery stator unit 11；By solder brazing or bonding or laser welding, electron beam welding, spot welding etc. it is various welding, it is quick-fried
The appropriate methods such as fried crimping fix and are installed on pole plate 12A, 12B, 12C, 12D of the internal perisporium of fully sheathed case 9；And it is sealing
The inside of closed box 9 can rotatably be disposed in the magnet rotor 13 of the inside of pole plate 12A, 12B, 12C, 12D.That is, pole plate
12A, 12B, 12C, 12D and magnet rotor 13 are arranged opposite.The outer circumferential surface of pole plate 12A, 12B, 12C, 12D are with along fully sheathed case 9
The mode of inner peripheral surface be bent to form.Fully sheathed case 9 is made of the relatively low material of non magnetic, magnetic susceptibility, such as by austenite not
Rust steel is made.Also, pole plate 12A, 12B, 12C, 12D are made of the higher material of magnetic susceptibility, such as are made of steel material.
In addition, pole plate 12A, 12B, 12C, 12D so that aftermentioned magnetic pole tooth 12a, 12b, 12c, 12d with defined position relationship and valve
The mode that the defined magnetic pole of magnet rotor 13 during closed state is opposed determines rotation position and is fixed on the inner circumferential of fully sheathed case 9
The original point position of wall, the thus stepper motor 10 during progress valve closed state.These structures also phase in aftermentioned each embodiment
Together.
Stator unit 11 is formed in a manner of a pair of of coil part 11A, 11B is made to be stacked in the direction of the axisl, in each coil part
In 11A, 11B, stator coil 112 is equipped in the spool 111 of resin, and is possessed respectively by magnetism at the both ends of spool 111
A pair of magnetic yoke (yoke portion) 113A and 113B, 113C and the 113D that body is formed.Yoke 113A, 113B, 113C, 113D by magnetic susceptibility compared with
The compositions such as high steel material.The peripheral end of each yoke 113A, 113B, 113C, 113D of coil part 11A and coil part 11B
It is entrenched in the cylindric frame 114 being made of magnetic substance, coil part 11A, 11B pass through the cylindrical shape being made of magnetic substance
Frame 114 and be fixed as one.Moreover, yoke 113A, 113B, 113C, 113D and the cylindric frame being made of magnetic substance
Frame 114 is closed by resin moulded parts 115.Also, from resin moulded parts 115 to the external energization drawn for stator coil 112
With conducting wire 116.
Each yoke 113A, 113B, 113C, 113D are substantially in circular shape, in the inner peripheral that it leans on 9 side of fully sheathed case,
Enlarged portion 113A1,113B1,113C1,113D1 of wheel round with the periphery plane-plane contact with fully sheathed case 9.In first reality
It applies in mode, the enlarged portion 113A1 directions of the yoke 113A in the outside (upper side) in the direction of the axisl of coil part 11A should
The outside of coil part 11A is formed.Also, the expansion of the yoke 113B of the inside (lower side) in the direction of the axisl of coil part 11A
The inside for opening portion 113B1 towards coil part 11A is formed.Also, outside (the lower part in the direction of the axisl of coil part 11B
Side) the outside of enlarged portion 113D1 towards coil part 11B of yoke 113D formed.Also, coil part 11B in axis L side
The inside of enlarged portion 113C1 towards the coil part 11B of the yoke 113C of upward inside (upper side) are formed.
As shown in Figures 3 to 5, for pole plate 12A, 12B, 12C, 12D, in the inside of fully sheathed case 9, as with line
Corresponding a pair of of pole plates 12A, 12B of circle portion 11A and a pair of of pole plate 12C, 12D corresponding with coil part 11B are each right
It assembles in combination.Each pole plate 12A, 12B, 12C, 12D have the slim cylinder with the inner circumferential plane-plane contact of fully sheathed case 9
Shared base portion 12A1,12B1,12C1,12D1 of shape.In addition, it is corresponding with coil part 11A a pair of pole plate 12A, 12B and with
Corresponding a pair of of pole plates 12C, 12D of coil part 11B are formed as identical shape.
For pole plate 12A, 12B corresponding with coil part 11A, a pole plate 12A has from shared base portion
12A1 towards pole plate 12B shared base portion 12B1 extend multiple rectangular shaped poles tooth 12a, another pole plate 12B have from
Share multiple rectangular shaped poles tooth 12b that the shared base portion 12A1 of base portion 12B1 towards pole plate 12A extend.Also, for line
For corresponding pole plates 12C, 12D of circle portion 11B, a pole plate 12C has from shared base portion 12C1 towards pole plate 12D's
Share multiple rectangular shaped poles tooth 12c of base portion 12D1 extension, another pole plate 12D has from shared base portion 12D1 towards magnetic pole
Multiple rectangular shaped poles tooth 12d of the shared base portion 12C1 extensions of plate 12C.Moreover, rectangular shaped poles tooth 12a and 12b, rectangular shaped poles tooth
12c and 12d is separated from each other equally spaced to be configured around axis L.
In addition, pole plate 12A, 12B, 12C, 12D are formed as follows.For example, the example as shown pole plate 12A, 12B in Fig. 6
It is sub like that, using punch process, punch press process, and be formed as having share base portion 12A1 ', 12B1 ', rectangular shaped poles tooth 12a ',
Flat intermediate member 12A ', the 12B ' of 12b '.Moreover, as the example of pole plate 12A is shown in Fig. 7, by using
Bending machining is rounded intermediate member 12A ', to form pole plate 12A.Pole plate 12B, 12C, 12D is also identical.Also, due to
Stepper motor 10 is two-phase excitation, so the number of magnetic pole tooth is preferably 4 multiple.
Shared base portion 12A1,12B1,12C1,12D1 of each pole plate 12A, 12B, 12C, 12D respectively with coil part 11A with
And each enlarged portion 113A1,113B1,113C1,113D1 of corresponding each yoke 113A, 113B, 113C, 113D of coil part 11B
It is opposed to configure.Also, the face by 9 side of fully sheathed case of enlarged portion 113A1,113B1,113C1,113D1 become and the fully sheathed case 9
Appearance plane-plane contact opposed faces 113A2,113B2,113C2,113D2.Moreover, share base portion 12A1,12B1,12C1,
12D1 and enlarged portion 113A1,113B1,113C1,113D1 in a manner of a part of plate face for clipping fully sheathed case 9 to be stacked.Also,
The width of enlarged portion 113A1,113B1,113C1,113D1 are bigger than the thickness of yoke 113A, 113B, 113C, 113D.Preferably
1.5~3 times.Also, share base portion 12A1,12B1,12C1,12D1 and enlarged portion 113A1,113B1,113C1,113D1
Width on axis L directions is roughly the same.
Pole plate 12A, 12B, 12C, the 12D so formed by the energization towards stator coil 112 and via yoke 113A,
113B, 113C, 113D are excited.For example, as in fig. 8 as arrow shows the magnetic line of force, in coil part 11A sides, by stator
The magnetic line of force that coil 112 generates passes through yoke 113A, housing 9, shares base portion 12A1, rectangular shaped poles tooth 12a, rectangular shaped poles tooth
Thus 12b, the frame 114 for sharing base portion 12B1, housing 9, yoke 113B and cylindrical shape form magnetic circuit.In this case,
Rectangular shaped poles tooth 12a is excited into N poles, and rectangular shaped poles tooth 12b is excited into S poles.In addition, Fig. 8 (A) shows nonmagnetic rotor 13
Imaginary state, Fig. 8 (B) is shown with the situation of magnet rotor 13.
According to above structure, in stepper motor 10, it is fixed to be made by applying the electric current of pulse type to stator coil 112
Subcoil 112 generates the magnetic line of force.Moreover, according to the pulse signal for alternately changing sense of current, it is corresponding with coil part 11A
Magnetic pole (N, S pole) alternately becomes caused by pole plate 12A, 12B and pole plate 12D, 12C corresponding with coil part 11B
Change, using these magnetic poles (N, S pole) and by the magnetic attachment between the magnetic pole (N poles, S poles) of 13 magnetized circumferencial direction of magnet rotor
Power and magnetic repulsion rotate magnet rotor 13.In addition, the rotation amount of magnet rotor 13 becomes with being applied to stator coil 112
The proportional amount of umber of pulse.Moreover, if magnet rotor 13 rotates, working shaft 54 and needle-valve 53 utilize the outer of working shaft 54
The feed screw mechanism of threaded portion 54a and the internal thread part 51b of support member 51 and moved up and down along axis L directions.Pin as a result,
Valve 53 increases and decreases the opening area of valve port 63a, come control refrigerant from the first junction block 61 to the second junction block 62 or from the
The flow that two junction blocks 62 are flowed to the first junction block 61.
In this way, the magnet rotor 13 of stepper motor 10 and the magnetic pole tooth 12a, 12b opposed with the periphery of magnet rotor 13,
12c, 12d are disposed in the inside of fully sheathed case 9.Also, coil part 11A, 11B of stepper motor 10 are disposed in the outside of fully sheathed case 9.
Also, connect respectively magnetic pole tooth 12a, 12b, 12c, 12d shared base portion 12A1,12B1,12C1,12D1 and fully sheathed case 9 it is interior
Table plane-plane contact, coil part 11A, 11B yoke 113A, 113B, 113C, 113D be equipped with shared base portion 12A1,12B1,
12C1,12D1 opposed enlarged portion 113A1,113B1,113C1,113D1.Moreover, enlarged portion 113A1,113B1,113C1,
The appearance plane-plane contact of 113D1 and fully sheathed case 9, enlarged portion 113A1,113B1,113C1,113D1, fully sheathed case 9 and shared base
Portion 12A1,12B1,12C1,12D1 etc. are stacked respectively.Therefore, it is possible to make to share base portion 12A1,12B1,12C1,12D1 and yoke
Enlarged portion 113A1,113B1,113C1,113D1 of 113A, 113B, 113C, 113D are opposed to reduce the mode of leakage magnetic flux, so as to
The structure for being difficult to generate magnetic loss can be become.Also, due to yoke 113A, 113B, 113C, 113D compared with magnetic pole tooth 12a,
The contraposition of 12b, 12c, 12d have the degree of freedom on axis L directions, so precision that need not be higher, thus coil part 11A,
The assembling of 11B becomes easy.Also, increase processing etc. using drawing process, punch process or wall thickness to form enlarged portion
113A1,113B1,113C1,113D1, and be high-precision for smooth and finishing by inner circumferential surface finishing.
Fig. 9 is the longitudinal section view of the stator unit of the motor-driven valve 200 of second embodiment, fully sheathed case and pole plate.With
Under, in second embodiment into the 4th embodiment, to element mark and Fig. 1 to Fig. 5 phases identical with first embodiment
With symbol and suitably the repetitive description thereof will be omitted.
The motor-driven valve 200 of the second embodiment possesses the stepper motor 20 and first embodiment as " motor part "
Identical fully sheathed case 9, valve system portion 50 (not shown) and valve casing 60.Stepper motor 20 in the second embodiment and
The difference of stepper motor 10 in one embodiment is：The shape and pole plate of yoke 213A, 213D of coil part 21A, 21B
The length in the direction of the axisl of 22A, 22B, 22C, 22D.
Stepper motor 20 is made of such as lower component：It is installed on the stator unit 21 of the periphery of fully sheathed case 9；It is installed on fully sheathed case
Pole plate 22A, 22B, 22C, 22D of 9 internal perisporium；And it can rotatably be disposed in pole plate in the inside of fully sheathed case 9
The magnet rotor 23 (chain-dotted line) identical with first embodiment of the inside of 22A, 22B, 22C, 22D.Pole plate 22A, 22B,
The outer circumferential surface of 22C, 22D are bent to form in a manner of the inner peripheral surface along fully sheathed case 9.Fully sheathed case 9 by it is non magnetic, magnetic susceptibility is relatively low
Material is formed, such as is made of austenite stainless steel.Also, pole plate 22A, 22B, 22C, 22D are by the higher material of magnetic susceptibility
Texture is into such as being made of steel material.
Stator unit 21 is formed in a manner of a pair of of coil part 21A, 21B is made to be stacked in the direction of the axisl, in each coil part
In 21A, 21B, stator coil 212 is equipped in the spool 211 of resin, and is possessed respectively by magnetism at the both ends of spool 211
A pair of magnetic yoke (yoke portion) 213A, 213B of body composition, a pair of magnetic yoke 213C, 213D.Yoke 213A, 213B, 213C, 213D are by saturating
The compositions such as the higher steel material of magnetic rate.Each yoke 213A, 213B, 213C, 213D's of coil part 21A and coil part 21B is outer
Peripheral end portion is entrenched in the cylindric frame 214 being made of magnetic substance, and coil part 21A, 21B are made of this magnetic substance
Cylindric frame 214 and be fixed as one.Moreover, yoke 213A, 213B, 213C, 213D and the cylinder being made of magnetic substance
The frame 214 of shape is closed by resin moulded parts 215.Also, it is drawn from resin moulded parts 215 to outside for stator coil 212
Energization conducting wire 216.
Each yoke 213A, 213B, 213C, 213D are substantially in circular shape, in the inner peripheral that it leans on 9 side of fully sheathed case,
Enlarged portion 213A1,213B1,213C1,213D1 of wheel round with the periphery plane-plane contact with fully sheathed case 9.In second reality
It applies in mode, the enlarged portion 213A1 directions of the yoke 213A in the outside (upper side) in the direction of the axisl of coil part 21A should
The inside of coil part 21A is formed, the enlarged portion of the yoke 213B in the outside (lower side) in the direction of the axisl of coil part 21B
The inside of 213B1 towards coil part 21B are formed.In addition, it is identical with first embodiment, the yoke 213B's of coil part 21A
The inside that the enlarged portion 213C1 of the yoke 213C of enlarged portion 213B1 and coil part 21B is respectively facing coil part 21A, 21B is formed.
I.e., in this second embodiment, for pole plate 22A, 22B, 22C, 22D, in the inside of fully sheathed case 9,
As a pair of of pole plate 22A, 22B corresponding with coil part 21A and a pair of of pole plate 22C corresponding with coil part 21B,
22D, it is each to assembling in combination.Each pole plate 22A, 22B, 22C, 22D have the inner circumferential plane-plane contact with fully sheathed case 9
Slim cylindrical shape shared base portion 22A1,22B1,22C1,22D1.In addition, a pair of pole plate corresponding with coil part 21A
22A, 22B and a pair of of pole plate 22C, 22D corresponding with coil part 21B are formed as identical shape.
For pole plate 22A, 22B corresponding with coil part 21A, a pole plate 22A has from shared base portion
22A1 towards pole plate 22B shared base portion 22B1 extend multiple rectangular shaped poles tooth 22a, another pole plate 22B have from
Share multiple rectangular shaped poles tooth 22b that the shared base portion 22A1 of base portion 22B1 towards pole plate 22A extend.Also, for line
For corresponding pole plates 22C, 22D of circle portion 21B, a pole plate 22C has from shared base portion 22C1 towards pole plate 22D's
Share multiple rectangular shaped poles tooth 22c of base portion 22D1 extension, another pole plate 22D has from shared base portion 22D1 towards magnetic pole
Multiple rectangular shaped poles tooth 22d of the shared base portion 22C1 extensions of plate 22C.Moreover, rectangular shaped poles tooth 22a and 22b, rectangular shaped poles tooth
22c and 22d is separated from each other equally spaced to be configured around axis L.In addition, pole plate 22A, 22B, 22C, 22D and first embodiment
It is formed in the same manner using punch process and bending machining.
In this second embodiment, shared base portion 22A1,22B1 of each pole plate 22A, 22B, 22C, 22D, 22C1,
The 22D1 also enlarged portions of corresponding each yoke 213A, 213B, 213C, 213D with coil part 21A and coil part 21B respectively
213A1,213B1,213C1,213D1 are opposed to configure.Also, enlarged portion 213A1,213B1,213C1,213D1 by closing
The face of 9 side of case becomes opposed faces 213A2,213B2,213C2,213D2 with the appearance plane-plane contact of the fully sheathed case 9.As a result, altogether
With base portion 22A1,22B1,22C1,22D1 and enlarged portion 213A1,213B1,213C1,213D1 to clip a part for fully sheathed case 9
The mode of plate face is stacked.Also, the width of enlarged portion 213A1,213B1,213C1,213D1 than yoke 213A, 213B, 213C,
The thickness of 213D is big.Preferably 1.5~3 times.Also, share base portion 22A1,22B1,22C1,22D1 and enlarged portion 213A1,
The width in the direction of the axisl of 213B1,213C1,213D1 are roughly the same.In addition, the pole plate 22A, 22B so formed,
22C, 22D and stator coil 212 it is identical with first embodiment for the effect of magnet rotor 23.In addition, this
In two embodiments, in coil part 21A, 21B, enlarged portion 213A1 and enlarged portion 213D1 towards inside bending, so as to
Shorten the length in the direction of the axisl of stator unit 21.
Figure 10 is the longitudinal section view of the motor-driven valve of the 3rd embodiment, and Figure 11 is inlaying for the motor-driven valve of the 3rd embodiment
The longitudinal section view of molded product and reducing gear, Figure 12 are the A-A direction views of Figure 11 and B-B direction view, and Figure 13 is the 3rd real
Apply the longitudinal section view of the pole plate of the motor-driven valve of mode.The motor-driven valve 300 of 3rd embodiment possesses as " motor part "
Stepper motor 30, valve system portion 50, valve casing 60, reducing gear 70 and fully sheathed case 9 ' made of a non-magnetic material.
Valve system portion 50 has support member 51, valve support 52, needle-valve 53 and working shaft 54 ' as " valve member ".
In addition to working shaft 54 ', the valve system portion 50 in the 3rd embodiment is identical with first embodiment.In working shaft 54 '
Periphery is formed with external thread part 54a, and external thread part 54a and the internal thread part 51b of support member 51 are screwed.Moreover,
The upper end of working shaft 54 ' is fixed with link plate 55 of the tool there are two connecting hole 55a, 55a.The valve system portion 50 is via reducing gear
70 and link with the magnet rotor 33 of stepper motor 30.
Fully sheathed case 9 ' is longitudinally longer compared with the fully sheathed case 9 of first embodiment and second embodiment.In the closing
Case 9 ' is interior and is fixed with first support portion 35 at an upper portion thereof, and is partly fixed with second support portion 36 therebetween.First
Frame portion 35 and second support portion 36 are formed by resin, and first support portion 35 has the longitudinal direction length chimeric with the inner peripheral surface of fully sheathed case 9 '
Bowl-shape main part 351 and the guide part 352 that hangs down in the center of the main part 351.Also, second support portion 36 has
The cylindric main part 361 chimeric with the inner peripheral surface of fully sheathed case 9 ' and the circular cone in the center for standing up the main part 361
The cradle portion 362 of shape.Moreover, the armature spindle 331 at the center of magnet rotor 33 is fixed on by the guide part 352 in first support portion 35
It is supported with the cradle portion 362 in second support portion 36, thus it is interior can be rotatably disposed in fully sheathed case 9 ' for magnet rotor 33.
Guide part 352 in first support portion 35 is centrally formed with pilot hole 352a, rotates in pilot hole 352a
The upper end of armature spindle 331 is embedded with freely.Also, its periphery is formed in the periphery of guide part 352 by spiral helicine prominent
The guiding external screw thread 352b that item is formed.Also, lower end limiter 352c is formed in the downside one end for being oriented to external screw thread 352a, and
Upper end limiter 352d is formed in the outer peripheral edge of upper end.Moreover, it is equipped in the periphery of guide part 352 with being oriented to external screw thread
The movable limiting component 37 that 352a is screwed.Protrusion 33a is formed in magnet rotor 33, is limited using protrusion 33a, lower end
Position device 352c, upper end limiter 352d and movable limiting component 37, can obtain position-limiting action identical with first embodiment.
Reducing gear 70 is arranged in the main part 361 in second support portion 36, possesses the pinion gear for being fixed on armature spindle 331
71st, the two-stage gear 73 that is pivotally supported by the pin 72 for the main part 361 for being arranged on second support portion 36 and it is pivotally supported in armature spindle
The spur gear 74 of 331 lower part.Pinion gear 71 is engaged with the gear wheel 73a of two-stage gear 73, the pinion gear 73b of two-stage gear 73
It is engaged with spur gear 74.Spur gear 74 possesses two connecting pins 74a, 74a, the connection of connecting pin 74a, 74a and working shaft 54 '
Connecting hole 55a, the 55a engaging of plate 55.
According to above structure, if the magnet rotor 33 of stepper motor 30 rotates, via reducing gear 70, link plate 55
The rotation of armature spindle 331 is transferred to working shaft 54 '.Further, since the rotary speed for making working shaft 54 ' using reducing gear 70 subtracts
Speed, so working shaft 54 ' can be obtained with higher torque, the motor-driven valve 300 of higher resolution ratio.The needle-valve in valve system portion 50
53 is identical with first embodiment using effect of the rotation of the working shaft 54 ' to be opened and closed valve port 63a.In addition, the embodiment
Reducing gear 70 reducing gear but it is also possible to be planetary gear etc. is made of spur gear etc..
Stepper motor 30 is arranged on the inside and outside of fully sheathed case 9 '.That is, stepper motor 30 is made of such as lower component：It is installed on fully sheathed case
The stator unit 31 of 9 ' periphery；It is installed on pole plate 32A, 32BC, 32D of the internal perisporium of fully sheathed case 9 '；And in fully sheathed case 9
Inside can rotatably be disposed in pole plate 32A, 32BC, 32D inside magnet rotor 33.Pole plate 32A, 32BC, 32D
Outer circumferential surface be bent to form in a manner of the inner peripheral surface along fully sheathed case 9 '.Fully sheathed case 9 ' is by the relatively low material of non magnetic, magnetic susceptibility
It forms, such as is made of austenite stainless steel.Also, pole plate 32A, 32BC, 32D are made of the higher material of magnetic susceptibility,
Such as it is made of steel material.
Stator unit 31 is formed in a manner of a pair of of coil part 31A, 31B is made to be stacked in the direction of the axisl, in each coil part
In 31A, 31B, stator coil 312 is equipped in the spool 311 of resin, and is possessed respectively by magnetism at the both ends of spool 311
A pair of magnetic yoke (yoke portion) 313A, 313B of body composition, a pair of magnetic yoke 313C, 313D.Yoke 313A, 313B, 313C, 313D are by saturating
The compositions such as the higher steel material of magnetic rate.Each yoke 313A, 313B, 313C, 313D's of coil part 31A and coil part 31B is outer
Peripheral end portion is entrenched in the cylindric frame 314 being made of magnetic substance, and coil part 31A, 31B are made of this magnetic substance
Cylindric frame 314 and be fixed as one.Moreover, yoke 313A, 313B, 313C, 313D and the cylinder being made of magnetic substance
The frame 314 of shape is closed by resin moulded parts 315.Also, it is drawn from resin moulded parts 315 to outside for stator coil 312
Energization conducting wire 316.
Each yoke 313A, 313B, 313C, 313D are substantially in circular shape, in the inner peripheral that it leans on 9 ' side of fully sheathed case,
Enlarged portion 313A1,313B1,313C1,313D1 with the periphery plane-plane contact with fully sheathed case 9 '.In the 3rd embodiment
In, the enlarged portion 313A1 of the yoke 313A in the outside (upper side) in the direction of the axisl of coil part 31A is towards the coil part
The inside of 31A is formed, the enlarged portion 313B1 courts of the yoke 313B in the outside (lower side) in the direction of the axisl of coil part 31B
It is formed to the inside of coil part 31B.In addition, identical with first embodiment, the enlarged portion of the yoke 313B of coil part 31A
The inside that the enlarged portion 313C1 of the yoke 313C of 313B1 and coil part 31B is respectively facing coil part 31A, 31B is formed.
For pole plate 32A, 32BC, 32D, in the inside of fully sheathed case 9 ', as magnetic pole corresponding with coil part 31A
Plate 32A, 32BC and pole plate 32BC, 32D corresponding with coil part 31B, it is each to being assembled in a manner of opposed.In addition,
In 3rd embodiment, coil part 31A, the pole plate 32BC of each inside of coil part 31B are formed as one, and become two lines
The pole plate that circle portion 31A, coil part 31B are shared.There is the inner peripheral surface face with fully sheathed case 9 ' to connect by each pole plate 32A, 32BC, 32D
Shared base portion 32A1,32BC1,32D1 of tactile slim cylindrical shape.In addition, pole plate 32A corresponding with coil part 31A and magnetic pole
The latter half of the top half of plate 32BC and pole plate 32D corresponding with coil part 31B and pole plate 32BC are identical
Shape.
For pole plate 32A, 32BC corresponding with coil part 31A, a pole plate 32A has from shared base portion
Multiple approximate halfpace shape magnetic pole tooth 32a that the shared base portion 32BC1 of 32A1 towards pole plate 32BC extend, another pole plate
32BC has multiple approximate halfpace shape magnetic pole tooths of the shared base portion 32A1 extensions from shared base portion 32BC1 towards pole plate 32A
32b.Also, for pole plate 32BC, 32D corresponding with coil part 31B, a pole plate 32BC has from shared base portion
Multiple approximate halfpace shape the magnetic pole tooth 32c, another pole plate 32D that the shared base portion 32D1 of 32BC1 towards pole plate 32D extend
Multiple approximate halfpace shape magnetic pole tooth 32d with the shared base portion 32BC1 extensions from shared base portion 32D1 towards pole plate 32BC.
Moreover, approximate halfpace shape magnetic pole tooth 32a and 32b, approximate halfpace shape magnetic pole tooth 32c and 32d are configured separated from each other around axis L.
Shared base portion 32A1,32BC1,32D1 and coil part 31A and coil part 31B of each pole plate 32A, 32BC, 32D
Enlarged portion 313A1,313B1,313C1,313D1 of corresponding each yoke 313A, 313BC, 313D be opposed to configure respectively.
Also, the face by 9 ' side of fully sheathed case of enlarged portion 313A1,313B1,313C1,313D1 become the outer surface with the fully sheathed case 9 '
Opposed faces 313A2,313B2,313C2,313D2 of face contact.Base portion 32A1,32BC1,32D1 and enlarged portion are shared as a result,
313A1,313B1,313C1,313D1 in a manner of a part of plate face for clipping fully sheathed case 9 ' to be stacked.Also, enlarged portion 313A1,
The width of 313B1,313C1,313D1 are bigger than the thickness of yoke 313A, 313B, 313C, 313D.Preferably 1.5~3 times.Also,
It is roughly the same to share the width in the direction of the axisl of base portion 32A1,32D1 and enlarged portion 313A1,313D1, shares base portion
The width in the direction of the axisl of 32BC1 be formed as with make enlarged portion 313B1,313C1 be combined after width substantially phase
Together.
Each pole plate 32A, 32BC, 32D by compared with shared base portion 32A1,32BC1,32D14 by approximate halfpace shape magnetic
Pole tooth 32a, approximate halfpace shape magnetic pole tooth 32b, approximate halfpace shape magnetic pole tooth 32c, approximate halfpace shape magnetic pole tooth 32d press-ins inside
(axis L sides) is formed.As a result, stage portion is formed in pole plate 32.Moreover, each pole plate 32A, 32BC, 32D are configured at first
The position of the main part 351 of cradle portion 35, and produced by insert molding is in the first support portion 35.Also, in second support portion 36 in addition
It is molded and is accommodated in first support portion 35 in the state of magnet rotor 33, second support portion 36 is assembled in first support portion
35 and the lower part of pole plate 32D.In this way, pole plate 32A, 32BC, 32D, first support portion 35 and second support portion 36 are logical
It crosses produced by insert molding and is formed as one, but since pole plate 32A, 32BC, 32D have stage portion, institute is so as to compared with first
Cradle portion 35 firmly holds the pole plate 32A, 32BC, 32D.
Also, due to forming what is be made of first support portion 35, pole plate 32A, 32BC, 32D and magnet rotor 33 etc.
Produced by insert molding product, and have second support portion 36 in the produced by insert molding product direct-assembling, so obtaining following effect.Approximate halfpace
The concentricity of the armature spindle 331 of shape magnetic pole tooth 32a, 32b, 32c, 32d and magnet rotor 33 becomes higher.Also, due in one
After ground assembles approximation halfpace shape magnetic pole tooth 32a, 32b, 32c, 32d and armature spindle 331, by the way that they only are assembled in fully sheathed case
9 ' internal processes, so as to which assemblability becomes higher.
In the 3rd embodiment, shared base portion 32A1,32BC1,32D1 of each pole plate 32A, 32BC, 32D also with
Enlarged portion 313A1,313B1 of corresponding each yoke 313A, 313B, 313C, 313D of coil part 31A and coil part 31B,
313C1,313D1 are opposed to configure respectively.Share as a result, base portion 32A1,32BC1,32D1 and enlarged portion 313A1,313B1,
313C1,313D1 in a manner of a part of plate face for clipping fully sheathed case 9 ' to be stacked.Also, share base portion 32A1,32BC1,32D1
It is roughly the same with the width in the direction of the axisl of enlarged portion 313A1,313B1,313C1,313D1.In addition, it forms like this
Pole plate 32A, 32BC, 32D and stator coil 312 it is identical with first embodiment for the effect of magnet rotor 33.
Pole plate 32A, 32BC, 32D in above-mentioned 3rd embodiment is in shared base portion 32A1,32BC1,32D1 and closely
It processes to be formed like the mode of stage portion is set to forge using half between halfpace shape magnetic pole tooth 32a, 32b, 32c, 32d, but for example
It can also be as the example of pole plate 32A ' corresponding with pole plate 32A be shown in the variation of Figure 14, by by magnetic pole
The shared base portion 32A1 ' of plate 32A ' sets stage portion to approximate halfpace shape magnetic pole tooth 32a ' side bendings.Also, it is not limited to
This, can also increase processing to set stage portion using wall thickness.
Figure 15 is the longitudinal section view of the motor-driven valve of the 4th embodiment, and Figure 16 is the stator of the motor-driven valve of the 4th embodiment
The longitudinal section view of unit, fully sheathed case and pole plate.The motor-driven valve 400 of 4th embodiment possesses the step as " motor part "
Stepper motor 40, valve system portion 50, valve casing 60 and fully sheathed case made of a non-magnetic material 8.4th embodiment is real with first
Apply mode difference be the shape of yoke 413A, 413D of coil part 41A, 41B of stepper motor 40, pole plate 42A,
Shape, the shape of fully sheathed case 8 and the shape of valve casing 60 ' of 42BC, 42D, other constructions are identical with first embodiment.
Valve casing 60 ' is generally formed into cylindrical shape by stainless steel etc., and is formed as and the valve casing 60 in first embodiment
Compared to longitudinally longer, longer partial response with this, the length of fully sheathed case 8 is shorter than the fully sheathed case 9 in first embodiment.And
And the support member 51 in valve system portion 50 is fixed on the stage portion of the interruption of valve casing 60 ' using fixed metal parts 511.
Fully sheathed case 8 is formed as the flat cylindrical shape of top plate 81, and has around the lower end opening portion of side surface part 82
Flange part 83.Moreover, aftermentioned pole plate 42D is clamped between the flange part 83 and the upper end of valve casing 60 ', and fully sheathed case
8 are airtightly fixed on the upper end of valve casing 60 ' by welding etc..
The inside of top plate 81 in fully sheathed case 8 is fixed with guide part maintaining part 91 ', and in the guide part maintaining part 91 '
Center cylindrical portion 91a be embedded in guide part 92.Guide part 92 has pilot hole 92a, the upper end of working shaft 54 in center
Portion is rotatably embedded in pilot hole 92a.Also, movable limiting component 94 is equipped in the periphery of cylindrical portion 91a, this can
Dynamic limiting component 94 is used to assemble spirally-guided wire body 93 and be screwed with spirally-guided wire body 93.Above-mentioned spirally-guided line
Body 93, movable limiting component 94, the lower end limiter 93a of spirally-guided wire body 93 and upper end limiter 93b and first are implemented
Mode plays the role of rotary stopper in the same manner.In addition, in the 4th embodiment, the protrusion 43a of magnet rotor 43 is formed
To be shorter than first embodiment.
Stepper motor 40 is arranged on the inside and outside of fully sheathed case 8.That is, stepper motor 40 is made of such as lower component：It is installed on fully sheathed case 8
Periphery stator unit 41；It is installed on pole plate 42A, 42BC, 42D of the internal perisporium of fully sheathed case 8；And in fully sheathed case 8
Inside can rotatably be disposed in the magnet rotor 43 of the inside of pole plate 42A, 42BC, 42D.I.e., pole plate 42A, 42BC,
42D and magnet rotor 43 are arranged opposite.The outer circumferential surface of pole plate 42A, 42BC, 42D are with curved along the mode of the inner peripheral surface of fully sheathed case 8
It is curved into.Fully sheathed case 8 is made of the relatively low material of non magnetic, magnetic susceptibility, such as is made of austenite stainless steel.Also, magnetic
Pole plate 42A, 42BC, 42D are made of the higher material of magnetic susceptibility, such as are made of steel material.
Stator unit 41 is formed in a manner of a pair of of coil part 41A, 41B is made to be stacked in the direction of the axisl, in each coil part
In 41A, 41B, stator coil 412 is equipped in the spool 411 of resin, and possesses respectively at the both ends of spool 411 and is magnetic
A pair of magnetic yoke (yoke portion) 413A, 413B of body composition, a pair of magnetic yoke 413C, 413D.Yoke 413A, 413B, 413C, 413D are by saturating
The compositions such as the higher steel material of magnetic rate.Each yoke 413A, 413B, 413C, 413D's of coil part 41A and coil part 41B is outer
Peripheral end portion is entrenched in the cylindric frame 414 being made of magnetic substance, and coil part 41A, 41B the magnetic substance by being made of
Cylindric frame 414 and be fixed as one.Moreover, yoke 413A, 413B, 413C, 413D and the cylinder being made of magnetic substance
The frame 414 of shape is closed by resin moulded parts 415.Also, it is drawn from resin moulded parts 415 to outside for stator coil 412
Energization conducting wire 416.
The yoke 413A by 81 side of top plate of fully sheathed case 8 has on top plate 81 in circular shape to axis L sides
Extension and with the enlarged portion 413A1 of the appearance plane-plane contact of the top plate 81 of fully sheathed case 8.Also, in coil part 41A, 41B
Yoke 413B, 413C of opposed portion in the inner peripheral by 8 side of fully sheathed case there is the outer circumferential surface face with the side surface part 82 of fully sheathed case 8 to connect
Enlarged portion 413B1,413C1 of tactile wheel round.Also, the yoke 413D of 60 ' side of valve casing is formed as the flange part with fully sheathed case 8
The circular shape of 83 faces contact.
As shown in figure 16, for pole plate 42A, 42BC, 42D, in the inside of fully sheathed case 8, as with coil part 41A
Corresponding pole plate 42A, 42BC and pole plate 42BC, 42D corresponding with coil part 41B, it is each to the group in a manner of opposed
Dress.In addition, in the 4th embodiment, coil part 41A, the pole plate 42BC of each inside of coil part 41B are formed as one
Body becomes two coil part 41A, the pole plate that coil part 41B is shared.Moreover, the pole plate 42A by 81 side of top plate of fully sheathed case 8
The discoid shared base portion 42A1 contacted with the inner surface face with top plate 81.Also, center pole plate 42BC have with
The shared base portion 42BC1 of the inner circumferential plane-plane contact of the side surface part 82 of fully sheathed case 8.In addition, the pole plate 42D of 60 ' side of valve casing has
The discoid shared base portion 42D1 contacted with 83 face of flange part of fully sheathed case 8.In addition, pole plate corresponding with coil part 41A
The lower half of the top half of 42A and pole plate 42BC and pole plate 42D corresponding with coil part 41B and pole plate 42BC
It is identical shape to divide.
For pole plate 42A, 42BC corresponding with coil part 41A, a pole plate 42A has from shared base portion
Multiple rectangular shaped poles tooth 42a that the shared base portion 42BC1 of 42A1 towards pole plate 42BC extend, another pole plate 42BC have
The multiple rectangular shaped poles tooth 42b extended from shared base portion 42BC1 towards the shared base portion 42A1 of pole plate 42A.Also, for
For corresponding pole plates 42BC, 42D of coil part 41B, pole plate 42BC has from shared base portion 42BC1 towards pole plate
Multiple rectangular shaped poles tooth 42c of the shared base portion 42D1 extensions of 42D, another pole plate 42D have from shared base portion 42D1 courts
The multiple rectangular shaped poles tooth 42d extended to the shared base portion 42BC1 of pole plate 42BC.Moreover, rectangular shaped poles tooth 42a and 42b, square
Shape magnetic pole tooth 42c and 42d are separated from each other equally spaced to be configured around axis L.
Figure 17 (A) is the bottom view of pole plate 42A, and Figure 17 (B) is the side view cutaway drawing of pole plate 42A.Utilize metallic plate
Punch process and bending machining, tilted from shared base portion 42A1 bending and form rectangular shaped poles tooth 42a and form pole plate
42A.Figure 18 is the figure of intermediate member when showing to form pole plate 42BC.For pole plate 42BC, first with metal
The punch process of plate forms intermediate member 42BC '.Then, by identical with above-mentioned Fig. 7 middle part is made using bending machining
Part 42BC ' is rounded, to form pole plate 42BC.
Figure 19 (A) is the top view of pole plate 42D, and Figure 19 (B) is the side view cutaway drawing of pole plate 42D.Utilize metallic plate
Punch process and bending machining, tilted from shared base portion 42D1 bending and form rectangular shaped poles tooth 42d and form pole plate
42D。
Shared base portion 42A1,42BC1,42D1 and coil part 41A and coil part 41B of each pole plate 42A, 42BC, 42D
Corresponding yoke 413A, 413B, 413C, 413D enlarged portion 413A1, enlarged portion 413B1,413C1 difference it is arranged opposite.
Also, the face by 8 side of fully sheathed case of enlarged portion 413A1,413B1,413C1,413D1 become the outer surface face with the fully sheathed case 8
Opposed faces 413A2,413B2,413C2,413D2 of contact.Base portion 42A1,42BC1,42D1 and enlarged portion are shared as a result,
413A1,413B1,413C1,413D1 in a manner of a part of plate face for clipping fully sheathed case 8 to be stacked.Also, enlarged portion 413A1,
The width of 413B1,413C1,413D1 are bigger than the thickness of yoke 413A, 413B, 413C, 413D.Preferably 1.5~3 times.
In the 4th embodiment, shared base portion 42A1,42BC1,42D1 of each pole plate 42A, 42BC, 42D also with
Enlarged portion 413A1,413B1 of corresponding each yoke 413A, 413B, 413C, 413D of coil part 41A and coil part 41B,
413C1,413D1 are opposed to configure respectively.Share as a result, base portion 42A1,42BC1,42D1 and enlarged portion 413A1,413B1,
413C1,413D1 in a manner of a part of plate face for clipping fully sheathed case 8 to be stacked.Also, share base portion 42BC1 and enlarged portion
The width in the direction of the axisl of 413B1,413C1 are roughly the same.In addition, pole plate 42A, 42BC, 42D for forming like this
It is identical with first embodiment for the effect of magnet rotor 43 with stator coil 412.
In the 4th embodiment, as forming yoke 413A, 413B, 413C, 413D simultaneously by different components respectively
Them is made to be embedded in the structure for the cylindric frame 414 being made of magnetic substance, but it's not limited to that or integrally
Form yoke 413A and cylindric frame 414 and the structure for being fitted together to yoke 413B, 413C, 413D.
In the 4th embodiment, the enlarged portion 413D1 of the yoke 413D of 60 ' side of valve casing is together with shared base portion 42D1
The flange part of fully sheathed case 8 is clipped, but leakage magnetic flux can be also reduced at the position.
Also, in the above-described 4th embodiment, in fully sheathed case 8, side surface part 82 is substantially vertical compared with top plate 81
Ground situation along as extending along axis L directions is illustrated, but side surface part can also non-vertically be inclined compared with top plate
The tiltedly fully sheathed case of such construction.That is, if yoke, top plate and pole plate are parallelly stacked, may not be vertical.
Figure 20 is the figure for the refrigerating circulation system for showing embodiment.In figure, symbol 100,200,300,400 is that composition is swollen
The motor-driven valve of the embodiments of the present invention of swollen valve, 500 are mounted in the outdoor heat exchanger of outdoor unit, and 600 are mounted in
The indoor heat exchanger of indoor unit, 700 be the flow channel switching valve for forming four-way valve, and 800 be compressor.Motor-driven valve 100,200,
300th, 400, outdoor heat exchanger 500, indoor heat exchanger 600, flow channel switching valve 700 and compressor 800 respectively by conduit and
It connects as illustrated, so as to form heat-pump-type freeze cycle.In addition, memory, pressure sensor, temperature sensor is omitted
Deng diagram.
Flow path when flow path when the flow path of freeze cycle is from from flow channel switching valve 700 to refrigeration operation or heating operation this two
A flow path switching.In refrigeration operation, as shown in solid arrow in figure, cut by 800 compressed refrigerant of compressor from flow path
It changes valve 700 to flow into outdoor heat exchanger 500, which functions as condenser, from outdoor heat exchanger 500
The refrigerant liquid of outflow flows into, the indoor heat exchanger via motor-driven valve 100,200,300,400 to indoor heat exchanger 600
600 function as evaporator.
On the other hand, in heating operation, as indicated by a dashed arrow in the figure, by 800 compressed refrigerant of compressor from
Flow channel switching valve 700 is to indoor heat exchanger 600, motor-driven valve 100,200,300,400, outdoor heat exchanger 500, flow channel switching valve
700 and compressor 800 cycle successively, indoor heat exchanger 600 is functioned as condenser, and outdoor heat exchanger 500 is as steaming
Hair device functions.Motor-driven valve 100,200,300,400 makes the refrigerant liquid flowed into refrigeration operation from outdoor heat exchanger 500
Body or the refrigerant liquid flowed into heating operation from indoor heat exchanger 600 distinguish puffing, and to the refrigerant
Flow controlled.
More than, embodiments of the present invention are described in detail referring to the drawings, but specific structure is not limited to
These embodiments, the present invention also include not departing from design alteration of scope of purport of the present invention etc..
Claims (4)
1. a kind of motor-driven valve, possessing motor part, valve system portion and fully sheathed case, above-mentioned valve system portion is arranged on valve casing, and on passing through
Stating the rotation driving of motor part makes valve member retreat, and so as to which valve port be opened and closed, above-mentioned fully sheathed case is right together with above-mentioned valve casing
Above-mentioned valve system portion is closed,
Said electric valve is characterized in that,
The magnet rotor in said motor portion and the magnetic pole tooth opposed with the periphery of the magnet rotor are disposed in above-mentioned fully sheathed case
Side, and the coil part in said motor portion is disposed in the outside of above-mentioned fully sheathed case,
It connects the shared base portion of above-mentioned magnetic pole tooth to contact with the inner surface face of above-mentioned fully sheathed case, and is set in the yoke of above-mentioned coil part
There is enlarged portion, the enlarged portion is opposed with above-mentioned shared base portion and width is bigger than the thickness of the yoke, and the enlarged portion passes through it
Opposed faces and the appearance plane-plane contact of above-mentioned fully sheathed case, the enlarged portion, above-mentioned fully sheathed case and above-mentioned shared base portion are stacked.
2. motor-driven valve according to claim 1, which is characterized in that
Above-mentioned enlarged portion carrys out outer surface, above-mentioned shared base portion and the above-mentioned expansion of the above-mentioned fully sheathed case of face contact with above-mentioned opposed faces
The portion of opening is configured with the direction parallel with the rotation axis of above-mentioned magnet rotor.
3. motor-driven valve according to claim 1, which is characterized in that
Above-mentioned enlarged portion carrys out outer surface, above-mentioned shared base portion and the above-mentioned expansion of the above-mentioned fully sheathed case of face contact with above-mentioned opposed faces
The portion of opening, the direction intersected with the rotation axis with above-mentioned magnet rotor configure.
4. a kind of refrigerating circulation system is the refrigerating circulation system for including compressor, condenser, expansion valve and evaporator,
It is characterized in that,
Usage right requires the motor-driven valve described in 1~3 any one as above-mentioned expansion valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016224050A JP6554455B2 (en) | 2016-11-17 | 2016-11-17 | Electric valve and refrigeration cycle system |
| JP2016-224050 | 2016-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071838A true CN108071838A (en) | 2018-05-25 |
| CN108071838B CN108071838B (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711034084.0A Active CN108071838B (en) | 2016-11-17 | 2017-10-30 | Motor-driven valve and refrigerating circulation system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6554455B2 (en) |
| CN (1) | CN108071838B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735935A (en) * | 2018-07-19 | 2020-01-31 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
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|---|---|---|---|---|
| CN1190277A (en) * | 1996-12-27 | 1998-08-12 | 佳能株式会社 | Motor |
| JPH10220614A (en) * | 1997-02-05 | 1998-08-21 | Denso Corp | Electric control valve |
| JP2000310348A (en) * | 1999-04-24 | 2000-11-07 | Saginomiya Seisakusho Inc | Electric operated selector valve |
| CN1874122A (en) * | 2005-05-31 | 2006-12-06 | 佳能株式会社 | Driving device |
| JP2007303684A (en) * | 2007-08-13 | 2007-11-22 | Fuji Koki Corp | Electric flow control valve |
| CN101420164A (en) * | 2007-10-26 | 2009-04-29 | 佳能株式会社 | Motor and driving device |
| CN104676068A (en) * | 2013-11-29 | 2015-06-03 | 株式会社Tgk | Stepping motor driven control valve |
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2016
- 2016-11-17 JP JP2016224050A patent/JP6554455B2/en active Active
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2017
- 2017-10-30 CN CN201711034084.0A patent/CN108071838B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1190277A (en) * | 1996-12-27 | 1998-08-12 | 佳能株式会社 | Motor |
| JPH10220614A (en) * | 1997-02-05 | 1998-08-21 | Denso Corp | Electric control valve |
| JP2000310348A (en) * | 1999-04-24 | 2000-11-07 | Saginomiya Seisakusho Inc | Electric operated selector valve |
| CN1874122A (en) * | 2005-05-31 | 2006-12-06 | 佳能株式会社 | Driving device |
| JP2007303684A (en) * | 2007-08-13 | 2007-11-22 | Fuji Koki Corp | Electric flow control valve |
| CN101420164A (en) * | 2007-10-26 | 2009-04-29 | 佳能株式会社 | Motor and driving device |
| CN104676068A (en) * | 2013-11-29 | 2015-06-03 | 株式会社Tgk | Stepping motor driven control valve |
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| CN110735935A (en) * | 2018-07-19 | 2020-01-31 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6554455B2 (en) | 2019-07-31 |
| CN108071838B (en) | 2019-10-11 |
| JP2018080775A (en) | 2018-05-24 |
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