WO2005034304A1 - ヨーク、電磁式アクチュエータ及びスターリング機関 - Google Patents
ヨーク、電磁式アクチュエータ及びスターリング機関 Download PDFInfo
- Publication number
- WO2005034304A1 WO2005034304A1 PCT/JP2004/010481 JP2004010481W WO2005034304A1 WO 2005034304 A1 WO2005034304 A1 WO 2005034304A1 JP 2004010481 W JP2004010481 W JP 2004010481W WO 2005034304 A1 WO2005034304 A1 WO 2005034304A1
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- WO
- WIPO (PCT)
- Prior art keywords
- yoke
- inner yoke
- notch
- piston
- face
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2280/00—Output delivery
- F02G2280/20—Rotary generators
Definitions
- the present invention relates to a yoke forming a magnetic circuit, an electromagnetic actuator having the yoke, and a Stirling engine having the electromagnetic actuator.
- a laminated yoke in which thin plates are laminated is used in order to prevent generation of eddy current.
- the laminated yoke is manufactured by laminating a predetermined number of yoke base plates formed in a predetermined shape by a punching method or the like by force or adhesion or the like.
- the upper and lower surfaces are parallel to each other, and the side surfaces are formed at right angles to the upper and lower surfaces.
- the coil In a motor that generates an electromagnetic force by winding a coil around a laminated yoke, the coil is wound in a cross section orthogonal to the moving direction of the mover. Therefore, in a normal rotary motor, the yoke base plates constituting the mover are stacked along the direction of the rotation axis in a direction perpendicular to the rotation axis, and in a linear motor for linearly moving the mover, the movement direction of the mover is Are stacked in a direction perpendicular to the direction.
- a yoke element is provided along the circumferential direction of the stator or the mover.
- the boards need to be stacked.
- Japanese Patent Application Laid-Open No. 2000-337725 discloses an outer laminated core formed by laminating a plurality of pairs of U-shaped yoke base plates, and a substantially flat drum-shaped truncated short side. It discloses an inner yoke formed by laminating yoke base plates and forming an outer yoke and an inner yoke arranged at an equal center angle of 45 °. Each outer core and inner core face each other.
- Japanese Patent Application Laid-Open No. 2000-337725 discloses that a rectangular iron core plate (thin plate) is laminated, the inner peripheral side surface is concavely formed, and the outer peripheral side surface is convexly curved. A fan-shaped laminated core with an angle of 45 ° is formed.
- the laminated core is attached to the outer peripheral surface of a cylindrical base member to form an inner yoke, and an iron core plate is laminated on the cylindrical base member in a circumferential direction.
- the outer yoke is disclosed by disposing an iron core plate coaxially with the inner yoke outside the mover.
- WO00 / 62406 discloses a method in which a mixture of metal magnetic particles and an electrically insulating resin is compression-molded on an inner yoke or an outer yoke of an electromagnetic linear actuator.
- One that uses a compression molded body is disclosed. With such a configuration, it is possible to simplify the structure and to manufacture a product having high durability and impact resistance.
- Patent Document 3 since a mixture of metal magnetic particles and an electrically insulating resin is compression-molded, adjacent metal magnetic particles are electrically insulated by the electrically insulating resin. To prevent the occurrence of eddy current loss (Patent Document 3, Example 6).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-337725
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-369462
- Patent Document 3 WO00Z62406
- an electromagnetic linear actuator when used as a drive source for a Stirling engine and is operated as a refrigerator, operating efficiency is particularly important.
- an object of the present invention is to provide an electromagnetic (linear) actuator driven with higher efficiency. Also, by using it for a Stirling institution, it aims to provide a more efficient and immediately efficient Stirling institution.
- the present invention relates to a yoke used for an electromagnetic actuator formed by sintering soft magnetic iron powder, wherein a notch for preventing occurrence of eddy current loss is provided.
- a yoke characterized by comprising:
- the yoke as used herein means not only the inner yoke and the outer yoke used for the linear actuator, but also the entire yoke generally used for the actuator, and the soft magnetic iron powder is sintered and molded. , Formed by molding such as compression molding.
- the notched portion includes notches and grooves as well as divided gaps, and the yoke includes those formed by being divided in the circumferential direction and being combined in a cylindrical shape. According to this yoke, the occurrence of eddy current loss can be satisfactorily prevented, and the operating efficiency of the used actuator can be increased.
- the notch may include one or more notches extending in the axial direction from one end face to the other end face.
- the one having one or a plurality of notches extending in the axial direction from one end face to the other end face may be provided in the axial direction from the other end face to the one end face.
- the yoke of the present invention is divided into a plurality of blocks in the circumferential direction, and adjacent blocks are connected to each other with an insulating material interposed therebetween.
- the part may be the notched part.
- each divided portion can be manufactured as a small part. Can be provided.
- each divided portion when the yoke is elongated in the axial direction, each divided portion can be manufactured as a small part by dividing the yoke in the axial direction.
- a yoke having magnetic properties close to the above can be provided.
- the present invention provides an outer yoke, an inner yoke formed by molding a soft magnetic iron powder disposed to face the inside of the outer yoke, and the outer yoke.
- An electromagnetic linear actuator comprising a coil portion, a permanent magnet disposed between the outer yoke and the inner yoke, reciprocating according to a magnetic flux generated by the coil portion, and a mover for supporting the permanent magnet.
- the present invention provides an electromagnetic actuator characterized in that the above-mentioned yoke is employed for the outer yoke and / or the inner yoke.
- the electromagnetic linear actuator described above can be suitably used for a Stirling engine.
- a Stirling institution with a high coefficient of performance can be provided.
- the invention's effect According to the present invention, it is possible to provide a yoke that favorably prevents eddy current loss, an electromagnetic (linear) actuator that can be driven with high efficiency, or a Stirling engine with a good coefficient of performance. .
- FIG. 1A is a vertical sectional view of a linear actuator using an inner yoke according to the present invention.
- FIG. 1B is a horizontal sectional view of the linear actuator shown in FIG. 1A.
- FIG. 2A is a perspective view of an inner yoke according to Embodiment 1 of the present invention.
- FIG. 2B is a plan view of the inner yoke shown in FIG. 2A.
- FIG. 3 is a perspective view of an inner yoke according to Embodiment 2 of the present invention.
- FIG. 4 is a graph showing the relationship between the number of cutouts and efficiency when an inner yoke that is useful in the present invention is employed in a linear actuator.
- FIG. 5A is a perspective view of another example of the inner yoke according to the present invention.
- FIG. 5B is a plan view of the inner yoke shown in FIG. 5A.
- FIG. 6A is a perspective view of still another example of the inner yoke according to the present invention.
- FIG. 6B is a plan view of the inner yoke shown in FIG. 6A.
- FIG. 7 is a perspective view of still another example of the inner yoke according to the present invention.
- FIG. 8 is a side sectional view showing a state where the inner yoke shown in FIG. 7 is attached to a cylinder.
- FIG. 9 is a perspective view showing a state where the inner yoke shown in FIG. 2A is connected in the axial direction.
- FIG. 10 is a cross-sectional view of the Stirling engine of the present invention.
- FIG. 1A is a cross-sectional view of an example of the linear actuator of the present invention.
- FIG. 1B is a plan view of the linear actuator shown in FIG. 1A.
- a linear actuator A shown in FIGS. 1A and IB includes an inner yoke 1 having a cylindrical shape, a cylinder 2 inserted into an inner peripheral surface 100 of a cylindrical portion 10 of the cylindrical inner yoke 1, and an inner yoke 1.
- the inner yoke 1, the cylinder 2, the mover 3, the outer yoke 4, and the coil 5 are arranged with the center axis S of the cylinder 2 as the axis.
- the inner yoke 1 is fixed to the cylinder 2, and the fixing method can be exemplified by a method in which the inner yoke 1 is adhered and fixed to a contact portion between the inner yoke 1 and the cylinder 2 by an adhesive such as an adhesive or an adhesive tape.
- an adhesive such as an adhesive or an adhesive tape.
- one that is fixed with an adhesive is employed.
- the cutouts 11-16 of the inner yoke 1 are formed so that they can conduct electricity, are in a state (insulated state), or have an extremely high electric resistance and are in a state (substantially cannot conduct electricity, state). .
- a piston 22 connected to the mover 3 and reciprocated by the linear actuator A is provided inside 21 of the cylinder 2.
- the piston 22 is disposed so as to slide on the inner surface 210 of the cylinder 2 via a gas film or an oil film.
- the mover 3 has a cylindrical shape with a bottom (with a hole in the bottom wall), and a permanent magnet 3a is attached to the open end 31. Also, inside the central part 321 on the closed end side 32, A connecting member 33 for connecting the mover 3 and the piston 22 is provided.
- the connecting member 33 has a cylindrical shape with the axis S as a central axis.
- the permanent magnets 3a are six independent permanent magnets 3a, and the independent permanent magnets 3a are provided outside the inner yoke 1 so as not to contact the inner yoke 1 and adjacent cutout portions of the inner yoke 1. They are arranged so as to face one-to-one with parts 111-116 separated by 11-16 (with a gap between adjacent permanent magnets). That is, the independent permanent magnets 3a are arranged at equal center angular intervals.
- the outer yoke 4 also has six independent outer yokes like the permanent magnet 3a, and each independent outer yoke 4 is provided outside the permanent magnet 3a so as not to contact the permanent magnet 3a, and It is arranged so as to face the permanent magnets 3a arranged at equal angular intervals on the circumference.
- the coil 5 is connected to a power supply (not shown), and a current whose direction changes at a constant amplitude and a constant period flows from the power supply. When a current flows through the coil 5, a magnetic field is generated around the coil.
- the linear actuator A generates a magnetic field by passing a current through the coil 5, and superposes the magnetic flux density of the magnetic field generated between the inner yoke 1 and the outer yoke 4 with the magnetic flux density of the permanent magnet 3a. By matching, a portion where the magnetic flux density becomes coarse and dense is generated, and the operation is performed using the force acting at that time.
- the linear actuator A since the inner yoke 1, the outer yoke 4, and the coil 5 are fixed, the permanent magnet 3a and the mover 3 to which the permanent magnet 3a is attached operate. Further, the piston 22 operates via the connecting member 33 fixed to the mover 3.
- the movable member 3, the permanent magnet 3a, and the piston 22 connected to the movable member 3 via the connecting member 33 are determined from the current period. Reciprocate in the given cycle.
- FIG. 2A is a top perspective view of an example of the inner yoke according to the present invention.
- Figure 2B to Figure 2A The top view of the inner yoke shown is shown.
- the inner yoke Id is obtained by sintering soft magnetic iron powder and resin by sintering molding.
- the soft magnetic iron powder include iron, iron'silicon, iron'nickel, iron'cobalt alloy, iron'aluminum, and the like.
- the resin material an epoxy resin, a nylon resin, a polyamide resin, a polyester resin, or the like can be used.
- the inner yoke Id has a notch lid 16d on the upper surface side in the drawing.
- the notches 1 Id 16d have the same length as each other, and are formed longer than half the axial length of the inner yoke Id.
- the cutout lid 16d By providing the cutout lid 16d, eddy current is less likely to be generated. This makes it possible to produce an inner yoke that is more efficient than it is less affected by eddy currents.
- the notch is provided with six notches provided at equal center angular intervals in the circumferential direction. The force is not limited to this. As shown in Fig. 4, eight points can be widely adopted.
- the notch length is longer than half the axial length of the inner yoke Id.
- the force is illustrated as an example. What can be kept can be widely adopted.
- the other end side is circumferentially connected, so the inner yoke is divided into multiple blocks at equal angular intervals in the circumferential direction, and it is sintered compared to what is later joined. Since the notch can be provided in the molding process at the time, the production is easy and the precision is high.
- FIG. 3 is a top perspective view of still another example of the inner yoke.
- the inner yoke le shown in Fig. 3 is one in which notches are provided alternately on both end surfaces as adjacent notches in the inner yoke Id shown in Figs. 2A and 2B.
- the first notch l ie is provided on the upper end face lUe in the drawing, and the second notch 12e and the sixth notch next to the first notch l ie.
- the notch 16e is provided on the lower end face lLe in the drawing. That is, the inner yoke le is the first The notch l le, the third notch 13e, and the fifth notch 15e are provided on the upper end face lUe, and the second notch 12e, the fourth notch 14e, and the sixth notch 16e are provided on the lower end face lLe. .
- the inner yoke Id has a portion having a closed circular cross section at the lower end in the drawing, and eddy current may be generated.
- the inner yoke le of the present embodiment Does not have a portion having a closed circular cross-section, so that eddy current is less likely to be generated.
- the notch can be provided in the molding process at the time of sintering, so that the production is easy and the precision is high.
- FIG. 4 is a graph showing the relationship between the number of notches in the inner yoke and the motor efficiency.
- the horizontal axis of the graph shown in Fig. 4 indicates the number of notched portions of the inner yoke, and the vertical axis indicates the motor efficiency. Looking at the graph shown in Fig. 4, the motor efficiency increases as the number of cuts increases, and peaks around the number of cuts exceeding 8, and then the efficiency gradually decreases. This indicates that the motor efficiency is highest when there are eight notches.
- FIG. 5A is a perspective view of another example of the inner yoke that works on the present invention.
- FIG. 5B is a plan view of the inner yoke shown in FIG. 5A.
- the inner yoke If may have a groove llf-18f as a notch in the cylindrical outer peripheral surface lOlf.
- the depth of the grooves l lf 18 f it is preferable that the depth is close to the thickness of the inner yoke lc as far as the strength allows, and that eight are provided at an equal center angle of 45 °.
- the groove llf-118f is formed over the entire length in the axial direction of the cylindrical shape, and the formation of the groove llf-118f suppresses the generation of eddy current.
- the groove portion llf-18f is formed over the entire length of the inner yoke If in the axial direction.
- the force is not limited to this. It is possible to adopt a wide range of shapes that have the effect of suppressing the generation of eddy currents in the inner arc, such as those that extend only by the length of the inner and those that do not reach both ends. In addition, when the eddy current is provided on the inner peripheral surface, the effect of suppressing the eddy current is improved.
- the groove portion llf-l 18f of the inner yoke If has a substantially rectangular cross-sectional shape in a direction perpendicular to the axis of the inner yoke If, but an eddy current is generated in the inner yoke, which is not limited thereto. It is possible to widely adopt a shape that has the effect of suppressing the occurrence of the light.
- FIG. 6A is a perspective view of still another example of the inner yoke
- FIG. 6B is a plan view of the inner yoke shown in FIG. 6A.
- the inner yoke lc shown in FIGS. 6A and 6B is divided into eight in the circumferential direction at equal center angular intervals.
- Each of the divided portions 11c to 18c of the inner yoke lc is formed by sinter molding with the same mixture ratio of iron powder and resin.
- the number of divisions is not limited to eight, and the motor can be manufactured with uniform magnetic characteristics.
- the number of divisions can be widely adopted.
- the division is not necessarily equal.
- FIG. 7 shows a perspective view of still another example of the inner yoke that works on the present invention.
- the inner yoke lb shown in Fig. 7 has a long reciprocating stroke of the linear actuator, and the inner yoke lb is longer in the axial direction.
- the inner yoke lb is made by sinter molding a mixture of soft magnetic iron powder and resin.
- the inner yoke 1b since the inner yoke 1b is large, the iron powder and the resin may not be mixed uniformly, and the magnetic characteristics may be uneven depending on the location. Therefore, the inner yoke lb is divided into two parts, the first member lib and the second member 12b, in the direction of the axis S1, and sintered and molded at the same mixing ratio of iron powder and resin. As a result, a large change in characteristics depending on the location of the inner yoke lb is substantially eliminated, and an inner yoke having more uniform magnetic characteristics can be manufactured.
- the first member l ib and the second member 12b are formed on the upper end surface ll lb, 121b in the drawing, and are engaged with the convex portions 113b, 123b, the lower end surfaces 112b, 122b (the connection I 14b, 124b).
- the engagement protrusion 123b of the second member 12b is inserted into and engaged with the engagement recess 114b of the first member lib, so that the center axis Sib of the first member lib is in contact with the engagement protrusion 123b.
- FIG. 8 is a side sectional view showing a state where the inner yoke shown in FIG. 7 is attached to a cylinder.
- the inner yoke lb is fixed to the cylinder 2b by a fixing ring 21b, a holding ring 22b, and a holding screw 23b.
- a flange 24b is formed in surface contact with 2b.
- the cylinder 2b has a groove 25b formed over the entire circumference at a portion slightly above the height of the upper end face 11 lb of the first member lib.
- the inner yoke lb is passed through the cylinder 2b, and the upper end surface 111b of the first member lib of the inner yoke lb is moved in a state where the lower end surface 122b of the second member 12b of the inner yoke lb is in contact with the collar portion 24b.
- a press ring 22b is arranged to cover.
- the holding ring 22b is provided with female screw holes 221b at equal center angular intervals, and a holding screw 23b is screwed into the female screw hole 221b.
- a fixing ring 21b is clamped and fixed to the groove 25b of the cylinder 2b.
- the holding ring 22b is prevented from coming off from the cylinder 2b by the fixing ring 21b.
- the holding screw 23b acts so as to press the upper end face 111b of the inner yoke lb, and also acts to raise the holding ring 22b upward.
- the holding ring 22b rises while being supported on the upper end surface 11lb of the inner yoke lb by the tip 231b of the holding screw 23b, and comes into contact with the fixed ring 2lb.
- the holding ring 22b When the holding screw 23b is further rotated further, the holding ring 22b lifts up the fixing ring 21b, and the upper surface of the fixing ring 21b presses the upper side surface of the groove 25b to be screwed into the holding ring 22b. Press the upper end 11 lb of the inner yoke lb through the set screw 23b. This makes it possible to fix the inner yoke lb.
- the holding ring 22b is preferably made of a resin, although the holding ring 22b is preferably elastically deformed to some extent.
- FIG. 9 shows a perspective view of the inner yoke shown in FIG. 2A connected in the axial direction.
- the first member l ib and the first member l ib are engaged by engaging the engagement concave portion 114b of the lower end surface 112b of the first member l ib with the engagement convex portion 124b of the upper end surface 121b of the second member 12b.
- a joining method such as bonding with an adhesive or welding can be widely used.
- FIG. 10 is a cross-sectional view showing an example of an apparatus that uses a Stirling engine as a refrigerator (hereinafter, referred to as a Stirling refrigerator).
- This Stirling refrigerator cools the cold head 73 by operating a Stirling cycle by various components arranged in a pressure vessel.
- the pressure-resistant container is mainly formed of a vessel 74B arranged on the back space 8 side and an outer cylinder 73C arranged on the working space 7 side.
- the vessel 74B is further divided into two structures, and the cold head 73 side is the vessel body 74D, and the side opposite to the cold head 73 side (hereinafter, referred to as the vibration isolator 82 side in this specification).
- the vibration isolator 82 side is the side opposite to the cold head 73 side
- Cylinder 2 and cylinder 2B which are connected with a communication hole 72A, are located in the pressure vessel.
- Each of the cylinders 2 and 2B is provided with a piston 22 and a displacer 90 that can reciprocate coaxially with the axes of the cylinders 2 and 2B. Further, a linear actuator A that drives the piston 22 is provided outside the cylinder 2. Provided. The interior of the pressure vessel is roughly divided into two spaces, one of which is the back space 8 mainly surrounded by the vessel 74B and the piston 22, and the other is mainly the piston 22, the outer cylinder 73C, & By Coldhead 73 The working space 7 is enclosed. The working space 7 is further divided into two spaces by the displacer 90. The space existing between the displacer 90 and the piston 22 is the compression space 9, and the space existing between the displacer 90 and the cold head 73 is the expansion space. 70.
- the compression space 9 and the expansion space 70 communicate with each other through a communication passage 72 formed between the cylinder 2B and the outer cylinder 73C.
- a regenerator 71 and a low-temperature side internal heat exchanger 96 are arranged in order from the compression space 9 to the expansion space 70.
- the cold head 73 is made of a highly thermally conductive material such as copper or aluminum and has a substantially cylindrical shape with a bottom.
- the bottom 73A faces the opening of the cylinder 2B, and the cylindrical portion 73B has a low-temperature internal heat exchanger 96 It is arranged to face.
- the worm head 98 is made of a high heat conductive material such as copper or aluminum in the form of a ring, and the inner circumference thereof is arranged to face the outer circumference of the high-temperature side internal heat exchanger 95.
- the piston 22 is a columnar structure, and a through hole 22a through which the rod 2a can pass is formed in the center axis S (see FIG. 1A) of the piston 22. Further, the refrigerant compressed by the compression space 9 A gas bearing (not shown) is provided to release the gas into the gap between the outer peripheral surface of the biston 22 and the cylinder 2 to provide a bearing effect.
- the displacer 90 has a columnar structure, and is provided with a gas bearing (not shown) for releasing the refrigerant compressed by the compression space 9 into a gap between the outer peripheral surface of the displacer 90 and the cylinder 2B to have a bearing effect.
- a rod 2 a is attached to the surface of the displacer 90 on the side of the piston 22, and the rod 2 a is passed through the through hole 22 a of the piston 22.
- a threaded portion 2b is formed at an end of the rod 2a on the side opposite to the displacer 90 side.
- the linear actuator A is the one described in the first embodiment described above, and here the connecting member 33 is integrated with the piston 22.
- a plurality of fixed shafts 24 for fixing the piston support panel 97 and the displacer support panel 88 from the end surface of the outer yoke 4 on the vibration isolator 82 side toward the vibration isolator 82 side (see FIG. For example, four) are erected.
- the piston support panel 97 supports the piston 22 in an elastic manner, is fixed to the fixed shaft 24, and is connected to the mover 3 by a perforated bolt 28.
- the displacer support panel 88 supports the piston 22 in an active manner, is fixed to the fixed shaft 24, and is fixed to the screw portion 2b. It is connected to the rod 2a via the fastened nut 92.
- an anti-vibration device 82 for anti-vibration of the Stirling refrigerator is arranged.
- the vibration isolator 82 is composed of a mass body and a panel body whose natural frequency is set to a frequency close to the vibration frequency of the piston, converts vibration energy into heat energy, and consequently reduces vibration of the entire Stirling refrigerator. be able to.
- the refrigerant is sealed in the pressure vessel.
- the refrigerant hydrogen, helium, nitrogen, or the like is used and sealed at a high pressure of several tens of atmospheres.
- an alternating voltage is applied to the linear actuator A, the linear actuator A reciprocates, and the piston 22 reciprocates accordingly.
- the displacer 90 reciprocates with a phase delayed by about a quarter cycle with respect to the operation of the piston 22, and forms a Stirling cycle in the working space 7.
- the high-temperature side internal heat exchanger 95 is heated to a high temperature
- the low-temperature side internal heat exchanger 96 is cooled to a low temperature.
- the heat of the high temperature side internal heat exchanger 95 is warm
- the heat is transmitted to the head 98 and released to the outside, and heat is supplied to the low-temperature side internal heat exchanger 96 from the outside via the cold head 73. That is, the cold head 73 is in a very low temperature state when viewed from the outside, and by using this low temperature, it becomes possible to cool various objects.
- sinter molding is employed as a method of molding the yoke, but the present invention is not limited to this, and soft magnetic iron powder such as compression molding can be produced by molding.
- the force described by exemplifying the inner yoke as the yoke can be applied to the outer yoke, which is not limited thereto.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2004800283908A CN1860658A (zh) | 2003-09-30 | 2004-07-23 | 磁轭、电磁致动器和斯特林发动机 |
KR1020067006068A KR100758067B1 (ko) | 2003-09-30 | 2004-07-23 | 전자식 작동기 및 스털링 기관 |
US10/573,569 US20070052508A1 (en) | 2003-09-30 | 2004-07-23 | Electromagnetic actuator and stirling engine |
EP04747868A EP1670116A1 (en) | 2003-09-30 | 2004-07-23 | Yoke, electromagnetic actuator, and stirling engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003341455A JP3797996B2 (ja) | 2003-05-30 | 2003-09-30 | 電磁式アクチュエータ及びスターリング機関 |
JP2003-341455 | 2003-09-30 |
Publications (1)
Publication Number | Publication Date |
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WO2005034304A1 true WO2005034304A1 (ja) | 2005-04-14 |
Family
ID=34419206
Family Applications (1)
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PCT/JP2004/010481 WO2005034304A1 (ja) | 2003-09-30 | 2004-07-23 | ヨーク、電磁式アクチュエータ及びスターリング機関 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070052508A1 (ja) |
EP (1) | EP1670116A1 (ja) |
KR (1) | KR100758067B1 (ja) |
CN (1) | CN1860658A (ja) |
WO (1) | WO2005034304A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100533012B1 (ko) * | 2004-01-10 | 2005-12-02 | 엘지전자 주식회사 | 왕복동식 모터의 고정자 구조 |
DE202011050847U1 (de) * | 2010-10-16 | 2011-11-21 | Msm Krystall Gbr (Vertretungsberechtigte Gesellschafter: Dr. Rainer Schneider, 12165 Berlin; Arno Mecklenburg, 10999 Berlin) | Elektromagnetischer Linearaktor |
US8752375B2 (en) * | 2011-08-16 | 2014-06-17 | Global Cooling, Inc. | Free-piston stirling machine in an opposed piston gamma configuration having improved stability, efficiency and control |
JP2013167415A (ja) * | 2012-02-16 | 2013-08-29 | Kawasaki New Energy Manufacturing Co Ltd | スターリングサイクル機関 |
JP6384849B2 (ja) * | 2013-12-03 | 2018-09-05 | オリンパス株式会社 | 硬度可変アクチュエータ |
DE112015001356T5 (de) * | 2014-03-20 | 2016-12-01 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Aufbau eines elektromagnetischen aktors |
CN104196647A (zh) * | 2014-08-18 | 2014-12-10 | 宁波华斯特林电机制造有限公司 | 一种高精度的斯特林循环机的导磁结构 |
DE102015207915A1 (de) * | 2015-04-29 | 2016-11-03 | Robert Bosch Gmbh | Ringmagnet mit Schlitzen zur Aufnahme von Fremdpartikeln, sowie eine elektrische Maschine beinhaltend einen solchen, sowie Verfahren zur Herstellung eines solchen |
KR102171676B1 (ko) * | 2015-05-26 | 2020-10-29 | 삼성전기주식회사 | 칩 전자 부품 |
JP6729288B2 (ja) * | 2016-10-21 | 2020-07-22 | 株式会社デンソー | 電磁アクチュエータ |
CN107180694B (zh) * | 2017-04-19 | 2019-09-24 | 常州市康士达机电有限公司 | 电磁换向阀的电磁铁组件 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0731114A (ja) * | 1993-05-10 | 1995-01-31 | Seiko Epson Corp | 軸方向空隙型のブラシレスモータの製造方法 |
WO2000062406A1 (fr) * | 1999-04-13 | 2000-10-19 | Matsushita Electric Industrial Co., Ltd. | Moteur lineaire |
JP2001178028A (ja) * | 1999-12-16 | 2001-06-29 | Yaskawa Electric Corp | 磁性粉末を用いた電動機 |
JP2004003436A (ja) * | 2002-02-18 | 2004-01-08 | Sharp Corp | スターリング機関及びそれを用いた貯蔵庫 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4389849A (en) * | 1981-10-02 | 1983-06-28 | Beggs James M Administrator Of | Stirling cycle cryogenic cooler |
US4675563A (en) * | 1982-10-29 | 1987-06-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration | Reciprocating linear motor |
JPH0824477B2 (ja) * | 1993-08-03 | 1996-03-13 | ヤンマー農機株式会社 | コンバインの脱穀装置 |
US6552459B2 (en) * | 2001-03-20 | 2003-04-22 | Emerson Electric Co. | Permanent magnet rotor design |
-
2004
- 2004-07-23 EP EP04747868A patent/EP1670116A1/en not_active Withdrawn
- 2004-07-23 CN CNA2004800283908A patent/CN1860658A/zh active Pending
- 2004-07-23 WO PCT/JP2004/010481 patent/WO2005034304A1/ja not_active Application Discontinuation
- 2004-07-23 KR KR1020067006068A patent/KR100758067B1/ko not_active IP Right Cessation
- 2004-07-23 US US10/573,569 patent/US20070052508A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0731114A (ja) * | 1993-05-10 | 1995-01-31 | Seiko Epson Corp | 軸方向空隙型のブラシレスモータの製造方法 |
WO2000062406A1 (fr) * | 1999-04-13 | 2000-10-19 | Matsushita Electric Industrial Co., Ltd. | Moteur lineaire |
JP2001178028A (ja) * | 1999-12-16 | 2001-06-29 | Yaskawa Electric Corp | 磁性粉末を用いた電動機 |
JP2004003436A (ja) * | 2002-02-18 | 2004-01-08 | Sharp Corp | スターリング機関及びそれを用いた貯蔵庫 |
Also Published As
Publication number | Publication date |
---|---|
CN1860658A (zh) | 2006-11-08 |
US20070052508A1 (en) | 2007-03-08 |
EP1670116A1 (en) | 2006-06-14 |
KR20060058138A (ko) | 2006-05-29 |
KR100758067B1 (ko) | 2007-09-11 |
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