CN108071838B - Motor-driven valve and refrigerating circulation system - Google Patents
Motor-driven valve and refrigerating circulation system Download PDFInfo
- Publication number
- CN108071838B CN108071838B CN201711034084.0A CN201711034084A CN108071838B CN 108071838 B CN108071838 B CN 108071838B CN 201711034084 A CN201711034084 A CN 201711034084A CN 108071838 B CN108071838 B CN 108071838B
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- fully sheathed
- pole plate
- valve
- sheathed case
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- 239000002184 metal Substances 0.000 description 7
- 230000006870 function Effects 0.000 description 6
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- 238000000465 moulding Methods 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 238000010438 heat treatment Methods 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
- 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
- 230000009471 action Effects 0.000 description 1
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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
Abstract
Motor-driven valve of the invention reduces the leakage magnetic flux between the magnetic yoke (413A) and pole plate (42A) of coil part (41A, 41B) and is easy assembling 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 the enlarged portion (413A1) of magnetic yoke (413A) being contacted in top plate (81) of fully sheathed case (8), makes the shared base portion (42A1) of pole plate (42A) and the inner surface face contact of top plate (81).The periphery plane-plane contact for making the enlarged portion (413B1,413C1) of magnetic yoke (413B, 413C) and the side surface part (82) of fully sheathed case (8) makes 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 refrigerating cycle etc..
Background technique
Now, as this motor-driven valve, have through the rotation of the magnet rotor of stepper motor come via feed screw mechanism
The motor-driven valve for making working shaft linear movement to which valve port be opened and closed using the valve member linked with the working shaft.Such as in day
Such motor-driven valve is disclosed in this Japanese Laid-Open Patent Publication 10-220614 bulletin (patent document 1).
The motor-driven valve of the patent document 1 seals the valve chamber etc. for the flow path for becoming refrigerant using valve casing and fully sheathed case
It closes, the magnet rotor of stepper motor and the inside that fully sheathed case is configured to the magnetic pole tooth for being placed in the magnet rotor, and stepper motor
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 do not need gas-tight sealization etc. of conducting wire.
Existing technical literature
Patent document 1: Japanese Unexamined Patent Publication 10-220614 bulletin
Summary 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, by being heat-treated the end face with magnetic yoke (yoke portion) d of stator coil a made in fully sheathed case c
Corresponding part locally 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 form the extremely narrow region around fully sheathed case c so as to magnetic yoke
The end face of d is corresponding.In addition, in order to reduce leakage magnetic flux inhibit magnetic circuit magnetic efficiency reduction, need to make the part of magnetic substance with
The line of demarcation of nonmagnetic material part becomes clear, but is difficult to clear in the punch components of the lesser thin-walled of thermal capacity by being heat-treated
It distinguishes to form such magnetic body portion and nonmagnetic material portion boundary in ground.Also, magnetic body portion is needed relative to magnetic yoke d
It is formed in correct position, and is also required to the correct positioning with the cooperation of the magnetic body portion of part in the assembling of coil part,
To which manufacturing management becomes difficult.
Problem of the present invention is that the magnet rotor and magnetic pole tooth in motor part are disposed in inside and the motor of fully sheathed case
The coil part in portion is disposed in the motor-driven valve in the outside of fully sheathed case, the magnetic flux between magnetic yoke and magnetic pole tooth by reducing coil part
By the leakage magnetic flux of part reduce magnetic loss, and improve the freedom degree when assembled of coil part.
The motor-driven valve of scheme 1 has motor part, valve system portion and fully sheathed case, and above-mentioned valve system portion is set to valve casing, and leads to
The rotation driving for crossing said motor portion makes valve member retreat, to 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 the inner surface face contact of above-mentioned fully sheathed case, and in above-mentioned coil part
Magnetic 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 magnetic yoke, and the expansion
Portion passes through the appearance plane-plane contact of its opposed faces and above-mentioned fully sheathed case, above-mentioned enlarged portion, above-mentioned fully sheathed case and above-mentioned shared base
Portion's stacking.
The motor-driven valve of scheme 2 is characterized in that, in the motor-driven valve documented by 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 documented by 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 refrigerating cycle system for including compressor, condenser, expansion valve and evaporator
System, which is characterized in that motor-driven valve documented by 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 to connect the shared base portion of magnetic pole tooth and the enlarged portion and fully sheathed case of magnetic yoke
Face contact and enlarged portion, fully sheathed case and the stacking of shared base portion, so making while leakage magnetic flux can be reduced to share base portion and magnetic yoke
Enlarged portion is opposed, so as to be configured to be difficult to generate magnetic loss.Also, the contraposition due to magnetic yoke relative to shared base portion has
Freedom degree in axial direction, so not needing higher precision is 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 rotary shaft with magnet rotor
Configuration, so the enlarged portion, fully sheathed case and shared base portion can easily be laminated in a manner of the top plate for clipping fully sheathed case, from
And it is easy to carry out the positioning in rotary axis direction.
According to the refrigerating circulation system of scheme 4, effect identical with scheme 1~3 can get.
Detailed description of the invention
Fig. 1 is the longitudinal section view of the motor-driven valve of first embodiment of the 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 cross-sectional view in Fig. 3.
Fig. 5 is the B-B cross-sectional view in Fig. 3.
Fig. 6 is the figure for showing an example of intermediate member for the pole plate in first embodiment.
Fig. 7 is the figure for showing an example of bending machining for the pole plate in first embodiment.
Fig. 8 is the figure for showing an example of 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 third embodiment.
Figure 11 is the produced by insert molding product of the motor-driven valve of third embodiment and the longitudinal section view of deceleration mechanism.
Figure 12 is the A-A direction view and B-B direction view of Figure 11.
Figure 13 is the longitudinal section view of the pole plate in the motor-driven valve of third embodiment.
Figure 14 is the longitudinal section view for showing the variation of the pole plate in the motor-driven valve of third 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 for showing an example of the intermediate member of pole plate at 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 showing the refrigerating circulation system of embodiment.
Figure 21 is the figure of example the problem of illustrating existing motor-driven valve.
In figure:
10-stepper motors (motor part), 11-stator units, 11A-coil part, 11B-coil part, 111-spools,
112-stator coils, 113A-magnetic yoke, 113A1-enlarged portion, 113A2-opposed faces, 113B-magnetic yoke, 113B1-expansion
Portion, 113B2-opposed faces, 113C-magnetic yoke, 113C1-enlarged portion, 113C2-opposed faces, 113D-magnetic yoke, 113D1-expansion
The portion of opening, 113D2-opposed faces, 114-frames, 115-resin moulded parts, 12A-pole plate, 12A1-share base portion, 12B-
Pole plate, 12B1-share base portion, and 12C-pole plate, 12C1-share base portion, and 12D-pole plate, 12D1-share base portion,
12a-rectangular shaped poles tooth, 12b-rectangular shaped poles tooth, 12c-rectangular shaped poles tooth, 12d-rectangular shaped poles tooth, 13-magnet rotors,
9-fully sheathed cases, 100-motor-driven valves, 20-stepper motors (motor part), 21-stator units, 21A-coil part, 21B-coil
Portion, 211-spools, 212-stator coils, 213A-magnetic yoke, 213A1-enlarged portion, 213A2-opposed faces, 213B-magnetic yoke,
213B1-enlarged portion, 213B2-opposed faces, 213C-magnetic yoke, 213C1-enlarged portion, 213C2-opposed faces, 213D-magnetic
Yoke, 213D1-enlarged portion, 213D2-opposed faces, 214-frames, 215-resin moulded parts, 22A-pole plate, 22A1-are altogether
With base portion, 22B-pole plate, 22B1-share base portion, and 22C-pole plate, 22C1-share base portion, 22D-pole plate,
22D1-shares base portion, 22a-rectangular shaped poles tooth, 22b-rectangular shaped poles tooth, 22c-rectangular shaped poles tooth, 22d-rectangular shaped poles
Tooth, 23-magnet rotors, 200-motor-driven valves, 30-stepper motors (motor part), 31-stator units, 31A-coil part,
31B-coil part, 311-spools, 312-stator coils, 313A-magnetic yoke, 313A1-enlarged portion, 313A2-opposed faces,
313B-magnetic yoke, 313B1-enlarged portion, 313B2-opposed faces, 313C-magnetic yoke, 313C1-enlarged portion, 313C2-are opposed
Face, 313D-magnetic yoke, 313D1-enlarged portion, 313D2-opposed faces, 314-frames, 315-resin moulded parts, 32A-magnetic pole
Plate, 32A1-share base portion, and 32BC-pole plate, 32BC1-share base portion, and 32D-pole plate, 32D1-share base portion,
32-pole plates, 321-share base portion, and 32a-approximation halfpace shape magnetic pole tooth, 32b-approximation halfpace shape magnetic pole tooth, 32c-is closely
Like halfpace shape magnetic pole tooth, 32d-approximation halfpace shape magnetic pole tooth, 33-magnet rotors, 9 '-fully sheathed cases, 300-motor-driven valves, 40-
Stepper motor (motor part), 41-stator units, 41A-coil part, 41B-coil part, 411-spools, 412-stator lines
Circle, 413A-magnetic yoke, 413A1-enlarged portion, 413A2-opposed faces, 413B-magnetic yoke, 413B1-enlarged portion, 413B2-are right
Set face, 413C-magnetic yoke, 413C1-enlarged portion, 413C2-opposed faces, 413D-magnetic yoke, 413D1-enlarged portion, 413D2-
Opposed faces, 414-frames, 415-resin moulded parts, 42A-pole plate, 42A1-share base portion, 42BC-pole plate,
42BC1-shares base portion, and 42D-pole plate, 42D1-share base portion, 42a-rectangular shaped poles tooth, 42b-rectangular shaped poles tooth,
42c-rectangular shaped poles tooth, 42d-rectangular shaped poles tooth, 43-magnet rotors, 8-fully sheathed cases, 400-motor-driven valves, 50-valve systems
Portion, 60-valve casings, 60A-valve chamber, the 61-the first junction block, the 62-the second junction block, 63-valve base parts, 63a-valve port,
L-axis.
Specific embodiment
Next, being illustrated referring to embodiment of the attached drawing to motor-driven valve of the invention.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 cross-sectional view in Fig. 3, and Fig. 5 is
B-B cross-sectional view 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 has the stepper motor 10 as " motor part ", valve system portion 50, valve casing 60 and by non-magnetic
Property body constitute 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 be connected with valve chamber 60A, and in the cylinder extended downward from lower end
Shape portion is connected with the second junction block 62.Also, being fitted into the side valve chamber 60A of the second junction block 62 has valve base part 63.In valve seat
Component 63 and the circular valve port 63a being connected to 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 connected with the second junction block 62 via valve port 63a.
Valve system portion 50 has support member 51, valve support 52, needle-valve 53 and working shaft 54 as " valve member ".
Support member 51 is made of the synthetic resin of high sliding property or is made of the sintering metal of high sliding property, close to valve casing 60
End has the fixation metal parts 511 for the stainless steel that can be integrated and being insert-molded.Moreover, 51 benefit of support member
The upper end of valve casing 60 is fixed on fixed metal parts 511.
Longer pilot hole 51a in the direction of the axisl, in pilot hole 51a, Neng Gouyan are formed in support member 51
The direction axis L, which is slidably fitted into, cylindric valve support 52.Valve support 52 is set as coaxial with valve chamber 60A, and in the valve support
52 lower end is fixed with needle-valve 53.In addition, can movably be equipped with spring fastening along the direction axis L in valve support 52
52a, and compression helical spring 52b is equipped with the state by defined load 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 for running through pilot hole 51a 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, the state branch that valve support 52 can rotatably be dangled by working shaft 54
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 chimeric
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 is equipped with the movable limiting component being screwed with spirally-guided wire body 93
94。
It is formed with protrusion 13a 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 and the thread binding with spirally-guided wire body 93 while turning round 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, the rotary stopper effect at the top position to obtain working shaft 54.
Stepper motor 10 is set to the inside and outside of fully sheathed case 9.That is, stepper motor 10 is made of such as lower component: being 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
Pole plate 12A, 12B, 12C, 12D of the internal perisporium of fully sheathed case 9 are fixed and be installed on to the methods appropriate such as fried crimping；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 peripheral surface of pole plate 12A, 12B, 12C, 12D are along fully sheathed case 9
The mode of inner peripheral surface be formed by bending.Fully sheathed case 9 is made of the lower material of non magnetic, magnetic susceptibility, such as not by austenite
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 positional relationship and valve
The opposed mode of the defined magnetic pole of magnet rotor 13 when closed state determines rotation position and is fixed on the inner circumferential of fully sheathed case 9
Wall, thus carry out valve closed state when stepper motor 10 original point position.These structures also phase in aftermentioned each embodiment
Together.
Stator unit 11 is constituted in a manner of a pair of of coil part 11A, 11B is laminated in the direction of the axisl, in each coil part
In 11A, 11B, it is equipped with stator coil 112 in the spool 111 of resin, and have 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 constituted.Magnetic yoke 113A, 113B, 113C, 113D by magnetic susceptibility compared with
High steel material etc. is constituted.The peripheral end of each magnetic 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, magnetic 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.
Shape each magnetic yoke 113A, 113B, 113C, 113D substantially annular in shape, its lean on 9 side of fully sheathed case inner peripheral,
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 direction of the magnetic 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 magnetic 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 magnetic yoke 113D formed.Also, coil part 11B in the axis side L
The inside of enlarged portion 113C1 towards the coil part 11B of the magnetic 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 plate 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 plate 12C, 12D of coil part 11B is 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
Multiple rectangular shaped poles tooth 12b that the shared base portion 12A1 for sharing base portion 12B1 towards pole plate 12A extends.Also, for line
For corresponding pole plate 12C, 12D of circle portion 11B, a pole plate 12C has from shared base portion 12C1 towards pole plate 12D's
Multiple rectangular shaped poles tooth 12c that base portion 12D1 extends are shared, another pole plate 12D has from shared base portion 12D1 towards magnetic pole
Multiple rectangular shaped poles tooth 12d that the shared base portion 12C1 of plate 12C extends.Moreover, rectangular shaped poles tooth 12a and 12b, rectangular shaped poles tooth
12c and 12d, which 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, such as the example for showing pole plate 12A, 12B in Fig. 6
It is sub like that, using punch process, punch press process, and be formed to have shared base portion 12A1 ', 12B1 ', rectangular shaped poles tooth 12a ',
Flat intermediate member 12A ', the 12B ' of 12b '.Moreover, passing through utilization as the example for showing pole plate 12A in Fig. 7
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 magnetic 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 are laminated in a manner of a part of plate face for clipping fully sheathed case 9.Also,
The width of enlarged portion 113A1,113B1,113C1,113D1 are bigger than the thickness of magnetic 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 the direction axis L is roughly the same.
Pole plate 12A, 12B, 12C, the 12D constituted in this way by towards and the energization of stator coil 112 via magnetic yoke 113A,
113B, 113C, 113D are excited.For example, as in fig. 8 as arrow shows the magnetic line of force, in the side coil part 11A, by stator
The magnetic line of force that coil 112 generates passes through magnetic yoke 113A, shell 9, shares base portion 12A1, rectangular shaped poles tooth 12a, rectangular shaped poles tooth
12b, the frame 114 for sharing base portion 12B1, shell 9, magnetic yoke 113B and cylindrical shape, thus form magnetic circuit.In this case,
Rectangular shaped poles tooth 12a is excited into the pole N, and rectangular shaped poles tooth 12b is excited into the pole S.In addition, Fig. 8 (A) shows nonmagnetic rotor 13
Imaginary state, the case where Fig. 8 (B) is shown with 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 (pole N, S) caused by pole plate 12A, 12B and pole plate 12D, 12C corresponding with coil part 11B alternately becomes
Change, using these magnetic poles (pole N, S) and by the magnetic attachment between the magnetic pole (pole N, the pole S) of the magnetized circumferencial direction of magnet rotor 13
Power and magnetic repulsion rotate magnet rotor 13.In addition, the rotation amount of magnet rotor 13 becomes and is applied to stator coil 112
The proportional amount of umber of pulse.Moreover, working shaft 54 and needle-valve 53 utilize the outer of working shaft 54 if magnet rotor 13 rotates
The feed screw mechanism of threaded portion 54a and the internal thread part 51b of support member 51 and moved up and down along the direction axis L.Needle 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, be separately connected magnetic pole tooth 12a, 12b, 12c, 12d shared base portion 12A1,12B1,12C1,12D1 and fully sheathed case 9 it is interior
Surface face contact, coil part 11A, 11B magnetic 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 laminated respectively.Therefore, can make to share base portion 12A1,12B1,12C1,12D1 and magnetic yoke
Enlarged portion 113A1,113B1,113C1,113D1 of 113A, 113B, 113C, 113D are opposed in a manner of reducing leakage magnetic flux, thus
The structure for being difficult to generate magnetic loss can be become.Also, due to magnetic yoke 113A, 113B, 113C, 113D relative to magnetic pole tooth 12a,
The contraposition of 12b, 12c, 12d have the freedom degree on the direction axis L, so higher precision is not needed, 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 same as the first embodiment mark and Fig. 1 to Fig. 5 phase
With symbol and suitably the repetitive description thereof will be omitted.
The motor-driven valve 200 of the second embodiment has 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 magnetic 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: being 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 pole plate can be rotatably disposed in the inside of fully sheathed case 9
The magnet rotor same as the first embodiment 23 (chain-dotted line) of the inside of 22A, 22B, 22C, 22D.Pole plate 22A, 22B,
The outer peripheral surface of 22C, 22D are formed by bending in a manner of the inner peripheral surface along fully sheathed case 9.Fully sheathed case 9 is by non magnetic, magnetic susceptibility is lower
Material is constituted, 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 at such as being made of steel material.
Stator unit 21 is constituted in a manner of a pair of of coil part 21A, 21B is laminated in the direction of the axisl, in each coil part
In 21A, 21B, it is equipped with stator coil 212 in the spool 211 of resin, and have respectively by magnetism at the both ends of spool 211
A pair of magnetic yoke (yoke portion) 213A, 213B, a pair of magnetic yoke 213C, 213D that body is constituted.Magnetic yoke 213A, 213B, 213C, 213D are by saturating
Higher steel material of magnetic rate etc. is constituted.Each magnetic 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, magnetic 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 and is directed to stator coil 212
Energization conducting wire 216.
Shape each magnetic yoke 213A, 213B, 213C, 213D substantially annular in shape, its lean on 9 side of fully sheathed case inner peripheral,
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 direction of the magnetic 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 magnetic 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 magnetic yoke 213B's of coil part 21A
The inside that the enlarged portion 213C1 of the magnetic yoke 213C of enlarged portion 213B1 and coil part 21B is respectively facing coil part 21A, 21B is formed.
That is, in this second embodiment, for pole plate 22A, 22B, 22C, 22D, in the inside of fully sheathed case 9,
As and corresponding a pair of of pole plate 22A, 22B of 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
Multiple rectangular shaped poles tooth 22b that the shared base portion 22A1 for sharing base portion 22B1 towards pole plate 22A extends.Also, for line
For corresponding pole plate 22C, 22D of circle portion 21B, a pole plate 22C has from shared base portion 22C1 towards pole plate 22D's
Multiple rectangular shaped poles tooth 22c that base portion 22D1 extends are shared, another pole plate 22D has from shared base portion 22D1 towards magnetic pole
Multiple rectangular shaped poles tooth 22d that the shared base portion 22C1 of plate 22C extends.Moreover, rectangular shaped poles tooth 22a and 22b, rectangular shaped poles tooth
22c and 22d, which 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 portion of corresponding each magnetic 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
A part of fully sheathed case 9 is clipped with base portion 22A1,22B1,22C1,22D1 and enlarged portion 213A1,213B1,213C1,213D1
The mode of plate face is laminated.Also, the width of enlarged portion 213A1,213B1,213C1,213D1 than magnetic 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 constituted in this way,
22C, 22D and stator coil 212 it is identical with first embodiment for the function and 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 third embodiment, and Figure 11 is inlaying for the motor-driven valve of third embodiment
The longitudinal section view of molded product and deceleration mechanism, Figure 12 are the A-A direction views and B-B direction view of Figure 11, and Figure 13 is third reality
Apply the longitudinal section view of the pole plate of the motor-driven valve of mode.The motor-driven valve 300 of the third embodiment has as " motor part "
Stepper motor 30, valve system portion 50, valve casing 60, deceleration mechanism 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 third embodiment is identical with first embodiment.In working shaft 54 '
Periphery is formed with external thread part 54a, and the internal thread part 51b of external thread part 54a and support member 51 is screwed.Moreover,
The upper end of working shaft 54 ' is fixed with tool, and there are two the link plates 55 of connecting hole 55a, 55a.The valve system portion 50 is via deceleration mechanism
70 and with the magnet rotor of stepper motor 30 33 link.
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 partially 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 chimeric with the inner peripheral surface of fully sheathed case 9 ' long
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 circular cone of the cylindric main part 361 and the center that stands up the main part 361 chimeric with the inner peripheral surface of fully sheathed case 9 '
The cradle portion 362 of shape.Moreover, being fixed on the armature spindle 331 at the center of magnet rotor 33 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
It is embedded with the upper end of armature spindle 331 freely.Also, its periphery is formed with by spiral helicine prominent in the periphery of guide part 352
The guiding external screw thread 352b that item is constituted.Also, it is formed with lower end limiter 352c in downside one end of guiding external screw thread 352a, and
Upper end limiter 352d is formed in the outer peripheral edge of upper end.Moreover, being equipped with and guiding external screw thread in the periphery of guide part 352
The movable limiting component 37 that 352a is screwed.It is formed with protrusion 33a 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 same as the first embodiment.
Deceleration mechanism 70 is arranged in the main part 361 in second support portion 36, has the pinion gear for being fixed on armature spindle 331
71, by being set to the two-stage gear 73 that is pivotally supported of pin 72 of the main part 361 in second support portion 36 and being 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 has two connecting pins 74a, 74a, the connection of connecting pin 74a, 74a and working shaft 54 '
Connecting hole 55a, 55a of plate 55 engages.
According to above structure, if the magnet rotor 33 of stepper motor 30 rotates, via deceleration mechanism 70, link plate 55
The rotation of armature spindle 331 is transmitted to working shaft 54 '.Further, since subtracting the rotation speed of working shaft 54 ' using deceleration mechanism 70
Speed, so the motor-driven valve 300 of the torque with higher of working shaft 54 ', higher resolution ratio can be obtained.The needle-valve in valve system portion 50
53 is identical with first embodiment to be opened and closed the effect of valve port 63a using the rotation of the working shaft 54 '.In addition, the embodiment
Deceleration mechanism 70 the deceleration mechanism but it is also possible to be planetary gear etc. is made of spur gear etc..
Stepper motor 30 is set to the inside and outside of fully sheathed case 9 '.That is, stepper motor 30 is made of such as lower component: being 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 peripheral surface be formed by bending in a manner of the inner peripheral surface along fully sheathed case 9 '.Fully sheathed case 9 ' is by the lower material of non magnetic, magnetic susceptibility
It constitutes, 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 constituted in a manner of a pair of of coil part 31A, 31B is laminated in the direction of the axisl, in each coil part
In 31A, 31B, it is equipped with stator coil 312 in the spool 311 of resin, and have respectively by magnetism at the both ends of spool 311
A pair of magnetic yoke (yoke portion) 313A, 313B, a pair of magnetic yoke 313C, 313D that body is constituted.Magnetic yoke 313A, 313B, 313C, 313D are by saturating
Higher steel material of magnetic rate etc. is constituted.Each magnetic 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, magnetic 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 and is directed to stator coil 312
Energization conducting wire 316.
Shape each magnetic yoke 313A, 313B, 313C, 313D substantially annular in shape, its lean on 9 ' side of fully sheathed case inner peripheral,
Enlarged portion 313A1,313B1,313C1,313D1 with the periphery plane-plane contact with fully sheathed case 9 '.In the third embodiment
In, the enlarged portion 313A1 of the magnetic 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 court of the magnetic 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 magnetic yoke 313B of coil part 31A
The inside that the enlarged portion 313C1 of the magnetic 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 be assembled in opposed mode.In addition,
In the third embodiment, coil part 31A, coil part 31B the pole plate 32BC of each inside be formed as one, become two lines
Circle portion 31A, coil part 31B shared pole plate.Each pole plate 32A, 32BC, 32D have to be connect with the inner peripheral surface face of fully sheathed case 9 '
Shared base portion 32A1,32BC1,32D1 of the slim cylindrical shape of touching.In addition, pole plate 32A corresponding with coil part 31A and magnetic pole
The lower half portion 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 that the shared base portion 32A1 from shared base portion 32BC1 towards pole plate 32A extends
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
The multiple approximate halfpace shape magnetic pole tooth 32d extended with the shared base portion 32BC1 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 around axis L separated from each other.
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 magnetic 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 are laminated in a manner of a part of plate face for clipping fully sheathed case 9 '.Also, enlarged portion 313A1,
The width of 313B1,313C1,313D1 are bigger than the thickness of magnetic yoke 313A, 313B, 313C, 313D.Preferably 1.5~3 times.Also,
The width in the direction of the axisl for sharing base portion 32A1,32D1 and enlarged portion 313A1,313D1 is roughly the same, 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 relative to 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, approximation halfpace shape magnetic pole tooth 32d indentation inside
(side axis L) is formed.Stage portion is formed in pole plate 32 as a result,.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, second support portion 36 in addition
In the state of forming and be accommodated with magnet rotor 33 in first support portion 35, second support portion 36 is assembled in first support portion
The lower part of 35 and 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, so can be relative to first
Cradle portion 35 firmly holds the pole plate 32A, 32BC, 32D.
Also, it is made of due to being formed 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 effect below.Approximate halfpace
The concentricity of the armature spindle 331 of shape magnetic pole tooth 32a, 32b, 32c, 32d and magnet rotor 33 is got 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 are only assembled in fully sheathed case
9 ' internal processes, so that assemblability is got higher.
In the third embodiment, shared base portion 32A1,32BC1,32D1 of each pole plate 32A, 32BC, 32D also with
Enlarged portion 313A1,313B1 of corresponding each magnetic 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 are laminated in a manner of a part of plate face for clipping fully sheathed case 9 '.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, constituting like this
Pole plate 32A, 32BC, 32D and stator coil 312 it is identical with first embodiment for the function and effect of magnet rotor 33.
Pole plate 32A, 32BC, 32D in above-mentioned third embodiment is in shared base portion 32A1,32BC1,32D1 and closely
It is formed like the mode that stage portion is arranged between halfpace shape magnetic pole tooth 32a, 32b, 32c, 32d using half forging processing, 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
Stage portion is arranged to approximate halfpace shape magnetic pole tooth 32a ' side bending in the shared base portion 32A1 ' of plate 32A '.Also, it is not limited to
This, also can use wall thickness and increase processing stage portion is arranged.
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 has the step as " motor part "
Into 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 magnetic 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, with the longer partial response, 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, being clamped with aftermentioned pole plate 42D 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, it is equipped with movable limiting component 94 in the periphery of cylindrical portion 91a, this can
Dynamic limiting component 94 is for assembling spirally-guided wire body 93 and being 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, the protrusion 43a of magnet rotor 43 is formed in the 4th embodiment
It is shorter than first embodiment.
Stepper motor 40 is set to the inside and outside of fully sheathed case 8.That is, stepper motor 40 is made of such as lower component: being 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.That is, pole plate 42A, 42BC,
42D and magnet rotor 43 are arranged opposite.The outer peripheral surface of pole plate 42A, 42BC, 42D are curved in a manner of the inner peripheral surface along fully sheathed case 8
It is curved at.Fully sheathed case 8 is made of the lower 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 constituted in a manner of a pair of of coil part 41A, 41B is laminated in the direction of the axisl, in each coil part
In 41A, 41B, it is equipped with stator coil 412 in the spool 411 of resin, and have respectively at the both ends of spool 411 and be magnetic
A pair of magnetic yoke (yoke portion) 413A, 413B, a pair of magnetic yoke 413C, 413D that body is constituted.Magnetic yoke 413A, 413B, 413C, 413D are by saturating
Higher steel material of magnetic rate etc. is constituted.Each magnetic 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, magnetic 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 and is directed to stator coil 412
Energization conducting wire 416.
The shape magnetic yoke 413A by 81 side of top plate of fully sheathed case 8 annular in shape, and have on top plate 81 to the side axis L
Extension and the enlarged portion 413A1 with the appearance plane-plane contact of the top plate of fully sheathed case 8 81.Also, in coil part 41A, 41B
Magnetic yoke 413B, 413C of opposed portion has in the inner peripheral by 8 side of fully sheathed case to be connect with the outer peripheral surface face of the side surface part 82 of fully sheathed case 8
Enlarged portion 413B1,413C1 of the wheel round of touching.Also, the magnetic yoke 413D of 60 ' side of valve casing is formed as the flange part with fully sheathed case 8
The circular shape of 83 face contacts.
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 opposed mode group
Dress.In addition, in the 4th embodiment, coil part 41A, coil part 41B the pole plate 42BC of each inside be formed as one
Body becomes the shared pole plate of two coil part 41A, coil part 41B.Moreover, the pole plate 42A by 81 side of top plate of fully sheathed case 8
Discoid shared base portion 42A1 with the inner surface face contact 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
With the discoid shared base portion 42D1 of 83 face contact 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 and pole plate 42BC corresponding with coil part 41B
Dividing is identical shape.
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 plate 42BC, 42D of coil part 41B, pole plate 42BC has from shared base portion 42BC1 towards pole plate
Multiple rectangular shaped poles tooth 42c that the shared base portion 42D1 of 42D extends, another pole plate 42D have from shared base portion 42D1 court
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, which 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 metal 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 making middle part using bending machining identically as above-mentioned Fig. 7
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 metal 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 magnetic 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 are laminated in a manner of a part of plate face for clipping fully sheathed case 8.Also, enlarged portion 413A1,
The width of 413B1,413C1,413D1 are bigger than the thickness of magnetic 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 magnetic 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 are laminated in a manner of a part of plate face for clipping fully sheathed case 8.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 constituting like this
It is identical with first embodiment for the function and effect of magnet rotor 43 with stator coil 412.
In the 4th embodiment, as forming magnetic yoke 413A, 413B, 413C, 413D simultaneously by different components respectively
Them are made to be embedded in the structure for the cylindric frame 414 being made of magnetic substance, but not limited to this, is also possible to integrally
Form magnetic yoke 413A and cylindric frame 414 and the structure for keeping magnetic yoke 413B, 413C, 413D chimeric.
In the 4th embodiment, the enlarged portion 413D1 of the magnetic 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 can also reduce leakage magnetic flux at the position.
Also, in the above-described 4th embodiment, in fully sheathed case 8, side surface part 82 is substantially vertical relative to top plate 81
Ground edge extends such situation along the direction axis L and is illustrated, but side surface part is also possible to non-vertically incline relative to top plate
Tiltedly such fully sheathed case constructed.That is, may not be vertical if magnetic yoke, top plate and pole plate are laminated in parallel.
Figure 20 is the figure for showing the refrigerating circulation system of 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 constituting four-way valve, and 800 be compressor.Motor-driven valve 100,200,
300,400, outdoor heat exchanger 500, indoor heat exchanger 600, flow channel switching valve 700 and compressor 800 pass through conduit respectively
Connection as illustrated, to constitute heat-pump-type refrigerating cycle.In addition, memory, pressure sensor, temperature sensor is omitted
Deng diagram.
Flow path when flow path when the flow path of refrigerating 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 the compressed refrigerant of compressor 800 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 is flowed into via motor-driven valve 100,200,300,400 and to indoor heat exchanger 600, the indoor heat exchanger
600 function as evaporator.
On the other hand, in heating operation, as indicated by a dashed arrow in the figure, by the compressed refrigerant of compressor 800 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 circuit sequentially, 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 decompression expansion, and to the refrigerant
Flow controlled.
More than, embodiments of the present invention are described in detail referring to attached drawing, but specific structure is not limited to
These embodiments, the present invention also include the design alteration etc. for the range for not departing from purport of the invention.
Claims (4)
1. a kind of motor-driven valve has motor part, valve system portion and fully sheathed case, above-mentioned valve system portion is set to valve casing, and by upper
The rotation driving for stating motor part makes valve member retreat, so that 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,
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,
Said electric valve is characterized in that,
The shared base portion of above-mentioned magnetic pole tooth and the inner surface face contact of above-mentioned fully sheathed case are connected, and is set in the magnetic 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 magnetic yoke, and the enlarged portion passes through it
The appearance plane-plane contact of opposed faces and above-mentioned fully sheathed case, the enlarged portion, above-mentioned fully sheathed case and above-mentioned shared base portion stacking.
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, with the direction configuration parallel with the rotary shaft 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 configuration intersected with the rotary shaft with above-mentioned magnet rotor.
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,
Use motor-driven valve described in 3 any one of claims 1 to 3 as above-mentioned expansion valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-224050 | 2016-11-17 | ||
| JP2016224050A JP6554455B2 (en) | 2016-11-17 | 2016-11-17 | Electric valve and refrigeration cycle system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071838A CN108071838A (en) | 2018-05-25 |
| CN108071838B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7144994B2 (en) * | 2018-07-19 | 2022-09-30 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
Citations (7)
| 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 |
-
2016
- 2016-11-17 JP JP2016224050A patent/JP6554455B2/en active Active
-
2017
- 2017-10-30 CN CN201711034084.0A patent/CN108071838B/en active Active
Patent Citations (7)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6554455B2 (en) | 2019-07-31 |
| JP2018080775A (en) | 2018-05-24 |
| CN108071838A (en) | 2018-05-25 |
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