WO2018211911A1

WO2018211911A1 - Freezer, and support structure for extending/retracting member

Info

Publication number: WO2018211911A1
Application number: PCT/JP2018/016358
Authority: WO
Inventors: 憲一金尾; 正二恒松; 明伸岡林; 清見大塚; 渡辺　和樹
Original assignee: 住友重機械工業株式会社; 株式会社ウェルリサーチ
Priority date: 2017-05-16
Filing date: 2018-04-20
Publication date: 2018-11-22
Also published as: EP3627069A4; JP6814439B2; JP2018194218A; EP3627069A1

Abstract

A freezer comprising a container filled with refrigerant, an extending/retracting member that is capable of extending and retracting in a prescribed direction, and a support structure that supports the extending/retracting member so as to be capable of extending and retracting in the prescribed direction and that restricts movement in an orthogonal direction that is orthogonal to the prescribed direction, wherein the support member comprises: a first connection part connected to the extending/retracting member, a second connection part connected to the container; and a deformation part which extends in the prescribed direction and of which one end side is connected to the first connection part and the other end side is connected to the second connection part, the deformation part deforming in the prescribed direction. The deformation part is configured from a member having a bent plate shape or cylindrical shape.

Description

Support structure for refrigerator and advance / retreat member

The present invention relates to a refrigerator and a support structure for advancing and retracting members.

The refrigerator includes a container filled with a refrigerant and an advance / retreat member that can advance and retreat in the axial direction. As a support structure for supporting such an advance / retreat member, those shown in Patent Document 1 and Patent Document 2 are known. In the support structure of Patent Document 1, a piston as an advance / retreat member is supported by a ball bearing. In the support structure of Patent Document 2, a piston as an advance / retreat member is supported by a spiral leaf spring.

JP 2013-185750 A Japanese Patent Laid-Open No. 5-288419

In the case of the support structure of Patent Document 1 as described above, vibration occurs due to rolling of the ball bearing. For example, when the support structure is adopted in a refrigerator mounted on a space device, there is a problem that the vibration affects each device in the refrigerator. On the other hand, in the support structure of Patent Document 2 as described above, the occurrence of vibration like a ball bearing can be suppressed, but when a spiral leaf spring is used, a displacement in the radial direction of the piston can occur. There is sex. That is, when the piston moves to the compressed air side and the leaf spring is greatly deformed, the rigidity of the leaf spring is lowered, and there is a possibility that the piston is displaced in the radial direction. Therefore, there is a problem that the stroke of the piston cannot be increased.

Therefore, an object of the present invention is to provide a refrigerator and a support structure for advancing / retreating members that can suppress vibration and can cope with a long stroke of the advancing / retreating members.

In order to solve the above problems, a refrigerator according to an aspect of the present invention supports a container filled with a refrigerant, an advancing / retreating member that can advance and retreat in a predetermined direction, and a reciprocating member that can advance and retreat in a predetermined direction. A support member that restricts movement in an orthogonal direction orthogonal to the direction, wherein the support member is a first connection portion connected to the advance / retreat member and a second connection connected to the container. A connecting portion that extends in a predetermined direction and is connected to the first connecting portion on one end side, is connected to the second connecting portion on the other end side, and is deformed in a predetermined direction. It is composed of a bent plate-like or cylindrical member.

The refrigerator according to one aspect of the present invention includes a support member that supports the advance / retreat member so that the advance / retreat member can advance and retreat in a predetermined direction and restricts movement in an orthogonal direction orthogonal to the predetermined direction. Such a support member is connected to the first connection portion connected to the advance / retreat member, the second connection portion connected to the container, and the first connection portion on one end side extending in a predetermined direction. And a deforming portion that is connected to the second connecting portion on the other end side and deforms in a predetermined direction. Further, the deforming portion is configured by a bent plate-like or cylindrical member. According to such a support structure, as the advance / retreat member advances / retreats, the plate-like or cylindrical member having the deformed portion bent expands / contracts via the first connection portion. Therefore, the occurrence of vibrations such as ball bearings can be suppressed. In addition, since the deforming portion is a plate-shaped or cylindrical member deformed between the first connecting portion connected to the advance / retreat member and the second connecting portion fixed to the container, Compared to a spiral leaf spring, it is possible to suppress a decrease in rigidity associated with the advance / retreat of the advance / retreat member. Therefore, even if the stroke is lengthened, the positional deviation in the radial direction of the advance / retreat member can be suppressed. As described above, it is possible to suppress vibration and cope with a long stroke of the advance / retreat member.

In the refrigerator, the deformation portion may be provided so as to surround the advance / retreat member when viewed from a predetermined direction. Thereby, since the advance / retreat member can be sufficiently supported, it is possible to further suppress a decrease in rigidity due to advance / retreat of the advance / retreat member.

In the refrigerator, the deforming portion is configured by a plurality of curved or bent plate-like members, and each plate-like member is curved when viewed from the circumferential direction with respect to the central axis extending in a predetermined direction of the advance / retreat member. Or it may be bent. Thus, the advance / retreat member can be supported by the expansion or contraction of the curved or bent plate-like member in a predetermined direction as the advance / retreat member advances / retreats.

The refrigerator may further include a piston fixed to the container, the advance / retreat member may be a cylinder that receives the piston, and the support members may be provided at both ends of the cylinder in a predetermined direction. Thereby, the cylinder as the advance / retreat member can be sufficiently supported by the support members at both ends of the cylinder.

The refrigerator may further include a coil that generates a force for the advance / retreat member to advance and retreat, and the deforming portion may be made of a conductive material, and supply power to the coil. Thereby, a deformation | transformation part can be shared as a member which supplies electric power to a coil.

In the refrigerator, the deformable portion is configured by a plurality of curved or bent plate-like members, and the plate-like member has a rigidity in the first direction in the planar direction and a second orthogonal to the first direction in the planar direction. It may be made of a material different in rigidity in the direction. Accordingly, the movement of the advancing / retreating member in the orthogonal direction can be sufficiently restricted by aligning the position of the deformed portion so that the direction with low rigidity corresponds to the predetermined direction and the direction with high rigidity corresponds to the orthogonal direction. it can.

A support structure for an advance / retreat member according to an aspect of the present invention supports an advance / retreat member that can advance / retreat in a predetermined direction, supports the advance / retreat member so that the advance / retreat member can advance / retreat in a predetermined direction, and restricts movement in an orthogonal direction orthogonal to the predetermined direction. A support member, and a support structure for the advance / retreat member, wherein the support member includes a first connection portion connected to the advance / retreat member, a second connection portion connected to the predetermined member, and a predetermined direction. And is connected to the first connection portion on one end side and connected to the second connection portion on the other end side, and is deformed in a predetermined direction, and the deformation portion is a bent plate shape or It is comprised with a cylindrical member.

According to the support structure for the advancing / retreating member according to one aspect of the present invention, it is possible to obtain the same operation and effect as the above-described refrigerator.

According to the present invention, it is possible to provide a refrigerator and a support structure for advancing / retreating members that can suppress vibration and can cope with a long stroke of the advancing / retreating member.

It is sectional drawing which shows the structure of the refrigerator which concerns on embodiment of this invention. It is an enlarged view of the gas compressor of the refrigerator of FIG. It is a perspective view of the deformation | transformation part of a support structure. It is sectional drawing which shows the gas compressor of the refrigerator which concerns on a modification. It is sectional drawing of the supporting member which concerns on a modification. It is a figure which shows the deformation | transformation part of the support structure which concerns on a modification.

Hereinafter, the refrigerator and the support structure for the advance / retreat member according to the present invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same part or an equivalent part, and the overlapping description is abbreviate | omitted.

As shown in FIG. 1, the refrigerator 1 is a Stirling refrigerator using a so-called Stirling cycle, and is a small refrigerator that generates a cooling temperature of about 80K, for example. The refrigerator 1 includes a gas compressor 2, a cold head 3, and a capillary tube 4 that connects them. The refrigerator 1 is filled with a refrigerant gas (refrigerant) used for generating a refrigeration action. As the refrigerant gas, for example, helium gas can be used.

The gas compressor 2 employs the support structure 50 for advancing and retracting members according to this embodiment. The gas compressor 2 according to the present embodiment has a symmetric configuration with respect to the center position in the axial direction (predetermined direction) in which the central axis CL extends. Therefore, unless otherwise stated, only the configuration on one side in the axial direction will be described. Further, in the axial direction, the side approaching the central position is referred to as “inner side in the axial direction”, and the side approaching both ends is referred to as “outer side in the axial direction”. In addition, a direction perpendicular to the central axis line CL and approaching or moving away from the central axis line CL is referred to as a “radial direction”. Further, in the radial direction, the side away from the central axis CL is referred to as “the outer peripheral side in the radial direction”, and the side approaching the central axis CL is referred to as “the inner peripheral side in the radial direction”. The direction around the central axis CL is referred to as “circumferential direction”. As shown in FIGS. 1 and 2, the gas compressor 2 includes a container 10, a cylinder (advance / retreat member) 6, a piston 7, a yoke 8, and support members 9 A and 9 B. Among these, the advance / retreat member support structure 50 includes the cylinder 6 and

support members

9A and 9B.

The container 10 has a substantially cylindrical shape extending in the axial direction around the central axis CL, and is filled with the above-described refrigerant gas. A partition member 5 extending around the central axis is provided at a central position in the axial direction of the container 10.

The cylinder 6 constitutes an advance / retreat member that can advance and retract in the axial direction. That is, the cylinder 6 can reciprocate along the axial direction. The cylinder 6 is accommodated in the container 10 outside the partition member 5 in the axial direction, and has a substantially cylindrical shape extending in the axial direction with the central axis CL as the center. The cylinder 6 according to the present embodiment includes a cylindrical cylindrical portion 31, a partition portion 32 that extends over the entire radial direction at a midway position in the axial direction inside the cylindrical portion 31, and an outer end in the axial direction of the cylindrical portion 31. And a coil support portion 33 that supports a coil 36 described later. The coil support portion 33 extends in the radial direction from the outer peripheral surface of the cylindrical portion 31, bends and extends inward in the axial direction, and a coil 36 is formed on the tip side of the portion.

The piston 7 is fixed to the container 10. The piston 7 is a columnar member extending from the center position of the container 10 toward the outer side in the axial direction around the central axis CL. The outer end surface of the piston 7 in the axial direction is received in the cylindrical portion 31 of the cylinder 6 and faces the partition portion 32 so as to be separated from each other in the axial direction. Thereby, a compression / expansion space N is formed between the piston 7 and the cylinder 6. The volume of the compression / expansion space N increases and decreases as the cylinder 6 advances and retreats, and the refrigerant gas is expanded and compressed accordingly. The piston 7 is formed with a flow path 7a penetrating along the central axis CL and a flow path 7b penetrating from the flow path 7a in the radial direction at a central position in the axial direction. The flow path 7 b communicates with a flow path 5 a formed in the partition member 5 and extending in the radial direction. The flow path 5 a is in communication with the flow path 4 a of the capillary tube 4. Thereby, the refrigerant gas compressed in the compression / expansion space N is supplied to the cold head 3 via the

flow paths

7a, 7b, 5a, 4a.

The yoke 8 is a double cylindrical member disposed on the outer peripheral side in the radial direction with respect to the cylindrical portion 31 of the cylinder 6. The yoke 8 is fixed to the inner peripheral surface of the container 10 and is provided so as to surround the cylindrical portion 31 of the cylinder 6. The yoke 8 is formed with a groove 8a extending from the outer end in the axial direction toward the inner side in the axial direction. A permanent magnet 34 is formed on the outer peripheral surface on the outer peripheral side in the radial direction of the groove 8a. Thereby, the yoke 8 forms a magnetic circuit together with the permanent magnet 34. A coil 36 supported by the coil support portion 33 of the cylinder 6 is disposed in the groove portion 3a of the yoke 8 from the outside toward the inside in the axial direction. Thereby, the coil 36 is arrange | positioned so that it may oppose the inner peripheral side of the permanent magnet 34 in the groove part 3a. The coil 36 is excited to generate a force for the cylinder 6 as the advance / retreat member to advance / retreat by the action of the permanent magnet 34.

The support member 9A supports the cylinder 6 as the advance / retreat member so as to be able to advance and retreat in the axial direction, and restricts movement in the orthogonal direction (radial direction and circumferential direction) orthogonal to the axial direction. The supporting member 9A includes a first connecting portion 41A connected to the cylinder 6, a second connecting portion 42A connected to the container 10, and an axial direction extending to the first connecting portion 41A on one end side. A deformable portion 40A connected to the second connecting portion on the other end side and deformed in the axial direction. The first connecting portion 41 A is connected to an outer end portion in the axial direction of the cylinder 6. Further, the second connecting portion 42A is disposed so as to face the first connecting portion 41A while being spaced apart outward in the axial direction. 41 A of 1st connection parts and 42 A of 2nd connection parts are comprised by the annular | circular shaped plate-shaped member centering on the center axis line CL, or a disk-shaped plate-shaped member.

The deforming portion 40A is formed of a bent plate member. The deforming portion 40A is configured by a plurality of curved plate-like members. Each plate-like member is curved as seen from the circumferential direction when the center axis CL is used as a reference. Specifically, as shown in FIG. 3, the deformable portion 40 A is configured by curving a plate-like member extending in a strip shape into a C-shaped cross section. The plate-like member is formed in a long rectangular shape. The plate-like member is bent so that the front and back flat portions are curved. The plate member is made of a material having elastic anisotropy. The plate-like member is made of a material having different rigidity in the longitudinal direction (first direction) in the plane direction and in the short direction (second direction) in the plane direction. Here, the rigidity in the longitudinal direction is low, and the rigidity in the short direction is high. An example of such a material is a single crystal metal. Examples of applicable single crystal metals include Fe-Mn-Si alloys, Cu-Al-Mn alloys, Cu-Al-Ni alloys, and the like. Here, a Cu—Al—Ni alloy that is excellent in both elastic anisotropy and superelasticity is employed. Further, the deformable portion 40A may be made of a conductive material. With such a configuration, the deforming portion 40A is easily deformed in the longitudinal direction (the axial direction in the assembled character). On the other hand, the shape of the deforming portion 40A is maintained without being deformed in the lateral direction (the orthogonal direction orthogonal to the axial direction).

The outer end in the axial direction of the deforming portion 40A is connected to the second connecting portion 42A, and the inner end is connected to the first connecting portion 41A. The deforming portion 40A is connected to the outer peripheral edge portions of the first connecting portion 41A and the second connecting portion 42A. The plate-like member of each deformation part 40A is curved as seen from the circumferential direction when the axial direction is used as a reference. The deforming portion 40A is curved so as to protrude toward the inner peripheral side in the radial direction. A plurality of deforming portions 40A are provided so as to surround the cylinder 6 when viewed from the axial direction. The plurality of deformable portions 40A may be arranged at an equal angle around the central axis line CL. The number of deformation portions 40A is not particularly limited. With the configuration as described above, the deforming portion 40A is deformed in the axial direction. On the other hand, the shape of the deforming portion 40A is maintained without being deformed in the orthogonal direction orthogonal to the axial direction. That is, the support member 9A supports the cylinder 6 so as to be able to advance and retract in the axial direction, and can restrict movement in the orthogonal direction orthogonal to the axial direction. Further, the support member 9 A can function as an energization member for supplying electricity to the coil 36.

The support member 9B includes a first connection portion 41B connected to the cylinder 6, a second connection portion 42B connected to the container 10, and an axial direction extending to the first connection portion 41B on one end side. A deformation portion 40B that is connected and connected to the second connection portion 42B on the other end side and is deformed in the axial direction. The first connection portion 41 B is connected to the inner end portion in the axial direction of the cylinder 6. Further, the second connection portion 42B is disposed so as to face the first connection portion 41B while being spaced apart inward in the axial direction. For the other configurations, the first connection portion 41B, the second connection portion 42B, and the deformation portion 40B have the same configuration as the first connection portion 41A, the second connection portion 42A, and the deformation portion 40A. .

As shown in FIG. 1, the cold head 3 includes a casing 21, a cylinder 22, a displacer 23, a support rod 27, and a coil spring 25. The inside of the substantially cylindrical casing 21 communicates with the flow path 4 a in the capillary tube 4, and the refrigerant gas is sent into the casing 21 through the capillary tube 4.

The cylinder 22 is a substantially cylindrical member that protrudes from the casing 21. The tip of the cylinder 22 (the end protruding from the casing 21) is closed. A space communicating with the inside of the casing 21 is formed inside the cylinder 22. A displacer 23 extending along the cylinder 22 is inserted into the cylinder 22.

An expansion space M is formed on the tip side of the cylinder 22 by the inner wall of the cylinder 22 and the displacer 23. The refrigerant gas in the casing 21 flows into the expansion space M through the gas flow path 24 formed in the displacer 23. The gas flow path 24 in the displacer 23 is filled with a cold storage material 26.

The displacer 23 is supported by a support rod 27 extending in the protruding direction of the cylinder 22 in the casing 21. The support rod 27 is supported by a bearing support portion 28 and a bearing 29 provided in the casing 21, and the bearing 29 supports the displacer 23 movably in the protruding direction of the cylinder 22 via the support rod 27. Yes. A coil spring 25 is provided in the casing 21 so as to be wound around the support rod 27. One end of the coil spring 25 is attached to the support rod 27, and the other end is attached to the bearing support portion 28. The coil spring 25 exerts an elastic force in a direction in which the displacer 23 is returned to the initial position when the displacer 23 is moved by the flow of the refrigerant gas.

In the refrigerator 1, when the coil 36 is energized, the pair of cylinders 6 reciprocate along the axial direction. That is, the pair of cylinders 6 moves so as to approach each other in the axial direction, thereby reducing the compression / expansion space N and compressing the refrigerant gas inside the space. The pair of cylinders 6 move away from each other in the axial direction to expand the compression / expansion space N and expand the refrigerant gas inside the space. When the refrigerant gas is compressed or expanded in the compression / expansion space N by the reciprocation of each cylinder 6, the pressure fluctuation is transmitted into the cold head 3 through the flow path in the capillary tube 4, and the refrigerant gas in the cold head 3 is changed. Pressurized or depressurized.

When the refrigerant gas in the compression / expansion space N is compressed by the gas compressor 2, the pressure is transmitted through the capillary tube 4, and a part of the refrigerant gas is cooled by the regenerator 26 in the cold head 3 to the expansion space M. It is pushed. Thereafter, when the compression / expansion space N is expanded by the gas compressor 2, the pressure of the refrigerant gas in the cold head 3 is reduced through the capillary tube 4, and the refrigerant gas in the compression / expansion space N is adiabatically expanded and cooled. Occurs. By repeating these steps, a refrigeration action of, for example, about 80 K or less can be generated in the cylinder 22 of the cold head 3.

Next, functions and effects of the refrigerator 1 and the support structure 50 for the advance / retreat member according to the present embodiment will be described.

The refrigerator 1 according to the present embodiment includes

support members

9A and 9B that support a cylinder 6 that is an advance / retreat member so that the cylinder 6 can advance and retreat in the axial direction and restrict movement in an orthogonal direction orthogonal to the axial direction.

Such support members

9A and 9B have

first connection portions

41A and 41B connected to the advance / retreat member,

second connection portions

42A and 42B connected to the container 10, and one end extending in the axial direction. The first connecting

portions

41A and 41B are connected on the side, the second connecting

portions

42A and 42B are connected on the other end side, and the deforming

portions

40A and 40B are deformed in the axial direction. Further, the deforming

portions

40A and 40B are formed of bent plate-like members. According to such a support structure 50, as the cylinder 6 advances and retreats, the bent plate-like members of the

deformable portions

40A and 40B expand and contract via the first connecting

portions

41A and 41B. Therefore, the occurrence of vibrations such as ball bearings can be suppressed. Further, the

deformable portions

40A and 40B have plate-like members between the

first connection portions

41A and 41B connected to the cylinder 6 and the

second connection portions

42A and 42B fixed to the container 10. Since it is deformed, it is possible to suppress a decrease in rigidity associated with the advance / retreat of the cylinder 6 as compared with a spiral leaf spring. Therefore, even if the stroke is lengthened, the displacement of the cylinder 6 in the radial direction can be suppressed. As described above, vibration can be suppressed and the longer stroke of the cylinder 6 can be accommodated.

In the refrigerator 1 according to the present embodiment, the deforming

portions

40A and 40B are provided so as to surround the cylinder 6 when viewed from the axial direction. Thereby, since the cylinder 6 can be sufficiently supported, it is possible to further suppress a decrease in rigidity accompanying the advance and retreat of the cylinder 6.

In the refrigerator 1 according to the present embodiment, the deforming

portions

40A and 40B are configured by a plurality of curved plate-like members, and each plate-like member is based on a central axis CL extending in the axial direction of the cylinder 6. As seen from the circumferential direction, it is curved. Accordingly, the cylinder 6 can be supported by the expansion or contraction of the curved or bent plate-like member in the axial direction as the cylinder 6 advances and retreats.

The refrigerator 1 according to the present embodiment further includes a piston 7 fixed to the container 10, the cylinder 6 is a cylinder that receives the piston 7, and the support members 9 A and 9 B are disposed at both ends in the axial direction of the cylinder 6. Is provided. Thereby, the cylinder 6 as the advance / retreat member can be sufficiently supported by the support members at both ends of the cylinder 6.

The refrigerator 1 according to the present embodiment further includes a coil 36 that generates a force for moving the cylinder 6 back and forth, and the

deformable portions

40A and 40B are made of a conductive material and supply power to the coil 36. As a result, the

deformable portions

40A and 40B can also be used as members for supplying power to the coil 36.

In the refrigerator according to the present invention, the deforming

portions

40A and 40B are configured by a plurality of curved plate-like members, and the plate-like members are rigid in the first direction in the planar direction and the first direction in the planar direction. It is made of a material different from the rigidity in the second direction orthogonal to. Thereby, the movement of the cylinder 6 in the orthogonal direction is sufficiently restricted by aligning the positions of the deforming

portions

40A and 40B so that the direction with low rigidity corresponds to the predetermined direction and the direction with high rigidity corresponds to the orthogonal direction. can do.

The support structure 50 of the advance / retreat member according to the present embodiment supports the cylinder 6 advance / retreat member that can advance / retreat in the axial direction, supports the cylinder 6 so as to advance / retreat in the axial direction, and restricts movement in an orthogonal direction orthogonal to the axial direction. It is the support structure 50 of the advancing / retreating member provided with supporting

members

9A and 9B. The

support members

9A and 9B extend in the axial direction from the

first connection portions

41A and 41B connected to the cylinder 6 and the

second connection portions

42A and 42B connected to the container (predetermined member) 10. The first connecting

portions

41A and 41B are connected at one end side, the second connecting

portions

42A and 42B are connected at the other end side, and the deforming

portions

40A and 40B are deformed in the axial direction. , 40B are formed of bent plate-like members.

According to the advance / retreat member support structure 50 according to the present embodiment, the same operation and effect as the above-described refrigerator 1 can be obtained.

The present invention is not limited to the embodiment described above.

For example, in the above-described embodiment, a cylinder is employed as the advance / retreat member, but a piston may be employed as the advance / retreat member. For example, as shown in FIG. 4, the gas compressor 2 of the refrigerator 100 includes a cylinder 106 fixed to the container 10 and a piston 107 that can move forward and backward. The cylinder 106 is provided near the center position in the axial direction of the container 10. The cylinder 106 is formed with a compression / expansion space N that communicates with the flow path 5 a of the partition member 5 and receives the piston 107. The piston 107 includes a piston member 131 that is received in the compression / expansion space N of the cylinder 106, a piston rod 132 that is connected to the piston member 131 and extends in the axial direction, and an outer end portion in the axial direction of the piston rod 132. And a provided coil support part 133. An outer end portion of the piston rod 132 in the axial direction is connected to the first connection portion 41A of the support member 9A. A position of the piston rod 132 between the yoke 8 and the cylinder 106 is connected to the first connection portion 41B of the support member 9B. A through hole is formed in the second connection portion 42B, and the piston rod 132 is inserted through the through hole.

In the above embodiment, the support structure for the advance / retreat member is applied to the gas compressor 2, but the support structure for the advance / retreat member may be applied to the cold head 3.

Also, the configuration of the deformed portion of the support member is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, you may employ | adopt the deformation | transformation part 153 comprised by the bent plate-shaped member like the supporting member 150 shown to Fig.5 (a). Further, the bending mode and the number of times of the plate-like member are not particularly limited, and a deformable portion 163 configured by a plate-like member bent twice in a substantially S shape like a support member 160 shown in FIG. May be adopted. As in the support member 170 shown in FIG. 5C, a deformed portion 173 configured by a bent cylindrical member may be employed. This deformation | transformation part 173 may be comprised by the bellows which is a cylindrical member bent in multiple steps, for example. Moreover, you may employ | adopt a curved cylindrical member as a deformation | transformation part.

Further, the bending and bending of the plate-like member is not particularly limited, and a bifurcated division is made by slitting one plate-like member as in the deformed portion 180 shown in FIGS. 6 (a) and 6 (b). The

portions

181 and 182 may be formed, and one of the divided portions 181 may be bent or bent toward one side in the axial direction, and the other divided portion 182 may be bent or bent toward the other side in the axial direction. Moreover, the shape of the plate-shaped member which comprises a deformation | transformation part is not specifically limited, You may employ | adopt shapes other than a rectangle. For example, like the deformed portion 190 shown in FIG. 6C, the edge portion may be curved so that the vicinity of the center position in the longitudinal direction is depressed. Thus, the spring constant may be adjusted by adjusting the shape of the plate-like member itself. In addition, the supporting member may not be a member that generates an elastic force, but only a deformed portion. If the spring constant is insufficient, a coil spring may be additionally used.

DESCRIPTION OF SYMBOLS 1,100 ... Refrigerator, 6,106 ... Cylinder, 7, 107 ... Piston, 9A, 9B, 150, 160, 170 ... Support member, 36 ... Coil, 40A, 40B, 153, 163, 173, 180, 190 ... Deformation part, 41A, 41B ... 1st connection part, 42A, 42B ... 2nd connection part, 50 ... Support structure.

Claims

A container filled with refrigerant;
An advancing and retracting member capable of advancing and retracting in a predetermined direction;
A support member that supports the advance / retreat member so as to be able to advance and retreat in the predetermined direction and restricts movement in an orthogonal direction perpendicular to the predetermined direction,
The support member is
A first connecting portion connected to the advance / retreat member;
A second connection connected to the container;
A deformation portion extending in the predetermined direction and connected to the first connection portion at one end side, connected to the second connection portion at the other end side, and deformed in the predetermined direction;
The said deformation | transformation part is a refrigerator comprised with the bent plate-shaped or cylindrical member.
The refrigerator according to claim 1, wherein the deforming portion is provided so as to surround the advance / retreat member when viewed from the predetermined direction.
The deformation part is constituted by a plurality of plate-like members that are curved or bent,
3. The refrigerator according to claim 2, wherein each of the plate-like members is curved or bent when viewed from a circumferential direction with reference to a central axis extending in the predetermined direction of the advance / retreat member.
A piston fixed to the container;
The advance / retreat member is a cylinder that receives the piston;
The refrigerator according to any one of claims 1 to 3, wherein the support members are provided at both ends of the cylinder in the predetermined direction.
A coil for generating a force for the advance / retreat member to advance and retreat;
The refrigerator according to any one of claims 1 to 4, wherein the deformable portion is made of a conductive material and supplies electric power to the coil.
The deformation part is constituted by a plurality of plate-like members that are curved or bent,
The plate-like member is made of a material having different rigidity in a first direction in the planar direction and rigidity in a second direction orthogonal to the first direction in the planar direction. A refrigerator according to claim 1.
An advancing and retracting member capable of advancing and retracting in a predetermined direction;
A support structure for the advance / retreat member, comprising: a support member that supports the advance / retreat member so as to be able to advance / retreat in the predetermined direction and restricts movement in an orthogonal direction orthogonal to the predetermined direction,
The support member is
A first connecting portion connected to the advance / retreat member;
A second connecting portion connected to a predetermined member;
A deformation portion extending in the predetermined direction and connected to the first connection portion at one end side, connected to the second connection portion at the other end side, and deformed in the predetermined direction;
The deformable portion is a support structure for an advancing / retracting member, which is formed of a bent plate-like or cylindrical member.