阅读说明：本技术 柔性液压缸组件及具有其的磁制冷装置 (Flexible hydraulic cylinder assembly and magnetic refrigeration device with same ) 是由 周鸣宇 李大全 汪魁 杨蓉 罗胜 于 2019-11-04 设计创作，主要内容包括：本发明提供了一种柔性液压缸组件及具有其的磁制冷装置。柔性液压缸组件包括缸体,缸体具有容纳腔,容纳腔的侧壁上开设有第一通孔和第二通孔；柔性环形缸体,柔性环形缸体设置于容纳腔内,柔性环形缸体的外周面与容纳腔的内周面之间形成过流通道；驱动机构,驱动机构与缸体相连接,驱动机构位于柔性环形缸体的内圆形成的空间内,驱动机构用于驱动柔性环形缸体发生形变,以使位于过流通道内的流体通过第一通孔和第二通孔中的一个排出容纳腔外,并使位于过流通道外的流体通过第一通孔和第二通孔中的另一个流入过流通道内。有效地减小了系统中用于驱动流体移动的电机的负载,有效地提高了柔性液压缸组件的实用性。(The invention provides a flexible hydraulic cylinder assembly and a magnetic refrigeration device with the same. The flexible hydraulic cylinder assembly comprises a cylinder body, the cylinder body is provided with an accommodating cavity, and a first through hole and a second through hole are formed in the side wall of the accommodating cavity; the flexible annular cylinder body is arranged in the accommodating cavity, and an overflowing channel is formed between the outer peripheral surface of the flexible annular cylinder body and the inner peripheral surface of the accommodating cavity; the driving mechanism is connected with the cylinder body and located in a space formed by the inner circle of the flexible annular cylinder body, and the driving mechanism is used for driving the flexible annular cylinder body to deform, so that fluid located in the overflowing channel is discharged out of the accommodating cavity through one of the first through hole and the second through hole, and the fluid located outside the overflowing channel flows into the overflowing channel through the other one of the first through hole and the second through hole. The load of a motor used for driving fluid to move in the system is effectively reduced, and the practicability of the flexible hydraulic cylinder assembly is effectively improved.)

1. A flexible hydraulic cylinder assembly, comprising:

the cylinder body (10) is provided with an accommodating cavity, and a first through hole (11) and a second through hole (12) are formed in the side wall of the accommodating cavity;

the flexible annular cylinder body (20) is arranged in the accommodating cavity, and a flow passage (30) is formed between the outer peripheral surface of the flexible annular cylinder body (20) and the inner peripheral surface of the accommodating cavity;

the driving mechanism (40) is connected with the cylinder body (10), the driving mechanism (40) is located in a space formed by the inner circle of the flexible annular cylinder body (20), the driving mechanism (40) is used for driving the flexible annular cylinder body (20) to deform, so that fluid located in the overflowing channel (30) is discharged out of the accommodating cavity through one of the first through hole (11) and the second through hole (12), and the fluid located out of the overflowing channel (30) flows into the overflowing channel (30) through the other one of the first through hole (11) and the second through hole (12).

2. The flexible hydraulic cylinder assembly according to claim 1, characterized in that the drive mechanism (40) is periodically actuated within the flexible annular cylinder (20) such that, for a preset time, fluid located within the transfer channel (30) is discharged out of the receiving chamber through the first through hole (11), fluid located outside the transfer channel (30) is flowed into the transfer channel (30) through the second through hole (12), and after the preset time, fluid located within the transfer channel (30) is discharged out of the receiving chamber through the second through hole (12), and fluid located outside the transfer channel (30) is flowed into the transfer channel (30) through the first through hole (11).

3. The flexible hydraulic cylinder assembly of claim 1 or 2, wherein the drive mechanism (40) comprises:

a power source (41), wherein the power source (41) is connected with the cylinder body (10);

the first end of the driving assembly is connected with the power source (41), the second end of the driving assembly is abutted against the inner circumferential surface of the flexible annular cylinder body (20), the power source (41) can drive the driving assembly to be rotatably arranged relative to the flexible annular cylinder body (20), so that in the rotating process of the second end of the driving assembly, the distance between the outer circumferential surface of the flexible annular cylinder body (20) opposite to the second end of the driving assembly and the accommodating cavity is gradually reduced, and fluid in the moving direction of the driving assembly is squeezed and discharged out of the accommodating cavity.

4. The flexible hydraulic cylinder assembly of claim 3, wherein the drive assembly comprises:

the first end of the first deflector rod (42) is connected with the power source (41), the second end of the first deflector rod (42) is abutted against the inner circumferential surface of the flexible annular cylinder body (20), the power source (41) can drive the first deflector rod (42) to be rotatably arranged relative to the flexible annular cylinder body (20) along a first direction, so that in the rotating process of the second end of the first deflector rod (42), the distance between the outer circumferential surface of the flexible annular cylinder body (20) opposite to the second end of the first deflector rod (42) and the accommodating cavity is gradually reduced, and fluid in the moving direction of the first deflector rod (42) is extruded and discharged out of the accommodating cavity.

5. The flexible hydraulic cylinder assembly of claim 4, wherein the drive assembly further comprises:

the first end of the second deflector rod (43) is connected with the power source (41), the second end of the second deflector rod (43) abuts against the inner circumferential surface of the flexible annular cylinder body (20), the power source (41) can drive the second deflector rod (43) to be rotatably arranged relative to the flexible annular cylinder body (20) along a second direction, so that in the rotating process of the second end of the second deflector rod (43), the distance between the outer circumferential surface of the flexible annular cylinder body (20) opposite to the second end of the second deflector rod (43) and the accommodating cavity is gradually reduced, and fluid in the moving direction of the second deflector rod (43) is extruded and discharged out of the accommodating cavity, and the second direction is opposite to the first direction.

6. The flexible hydraulic cylinder assembly according to claim 5, characterized in that the first through hole (11) is disposed opposite to the second through hole (12), and the second end of the first lever (42) and the second end of the second lever (43) are simultaneously rotated to the first through hole (11) or the second through hole (12) within a preset time.

7. The flexible hydraulic cylinder assembly according to claim 5, characterized in that a rolling bearing (50) is provided at a second end of at least one of the first and second shift levers (42, 43), an outer circumferential surface of the rolling bearing (50) being disposed against an inner circumferential surface of the flexible annular cylinder (20).

8. The flexible hydraulic cylinder assembly of claim 5,

a second end of the second lever (43) rotates in a direction opposite to the first direction to one position of the first through hole (11) and the second through hole (12) when the second end of the first lever (42) rotates in the first direction to the other position of the first through hole (11) and the second through hole (12), and/or,

when the second end of the second shift lever (43) rotates to one position of the first through hole (11) and the second through hole (12) along the second direction, the second end of the first shift lever (42) rotates to the other position of the first through hole (11) and the second through hole (12) along the direction opposite to the second direction.

9. The flexible hydraulic cylinder assembly according to claim 5, wherein a second end of the first lever (42) moves in a circular motion along the first direction, a second end of the second lever (43) moves in a circular motion along the second direction, and the second end of the first lever (42) and the second end of the second lever (43) rotate to the first through hole (11) or the second through hole (12) simultaneously.

10. The flexible hydraulic cylinder assembly according to claim 5, characterized in that when said first and second levers (42, 43) are both rotated to the position of said first through hole (11), the centers of rotation of said first and second levers (42, 43) are arranged in coincidence with at least one of the geometric center of the profile of the inner wall of said housing cavity and the geometric center of the profile of the outer peripheral surface of said flexible annular cylinder (20).

11. The flexible hydraulic cylinder assembly according to claim 10, wherein a distance from a center of rotation of the first and second levers (42, 43) to an inner wall surface of the flexible annular cylinder (20) opposite the first through hole (11) is greater than a distance from a center of rotation of the first and second levers (42, 43) to an inner wall surface of the flexible annular cylinder (20) opposite the second through hole (12).

12. A magnetic refrigeration apparatus comprising a flexible hydraulic cylinder assembly, wherein the flexible hydraulic cylinder assembly is as claimed in any one of claims 1 to 11.

Technical Field

The invention relates to the technical field of magnetic refrigeration equipment, in particular to a flexible hydraulic cylinder assembly and a magnetic refrigeration device with the same.

Background

The structure principle of the mainstream magnetic refrigerator at present is that a cam is used for driving a piston to do reciprocating linear motion in a piston cylinder, so that heat exchange fluid is pushed to flow, the heat exchange fluid can exchange and transfer heat, and finally the magnetic refrigerator can play a role in refrigerating and heating. The piston cylinder has higher manufacturing precision requirement, and the processing precision requirement cannot be met by most processing technology levels at present. In addition, the system flow path of the whole unit is often complex, and a large flow resistance exists inside the unit. And the heat exchange fluid is driven by the cam to drive the piston to push, so that a large load can be brought to the motor. If the torque of the motor cannot meet the requirement, the reducer needs to be connected to increase the torque, so that the structure of the whole machine is too complex. Meanwhile, the sealing problem of the piston cylinder in the prior art is also a difficult problem influencing the normal work of the unit. If the fit clearance of piston cylinder and piston is too big, then the leakproofness is poor, has the fluid to reveal the hidden danger. If the fit clearance is too small, the friction force between the two is large in the mutual sliding process, and the working condition of the piston cylinder is further worsened.

Disclosure of Invention

The invention mainly aims to provide a flexible hydraulic cylinder assembly and a magnetic refrigeration device with the same, and aims to solve the problem that a motor load is large due to the fact that a motor is required to drive fluid to move in a compressor system in the prior art.

To achieve the above object, according to one aspect of the present invention, there is provided a flexible hydraulic cylinder assembly including: the cylinder body is provided with an accommodating cavity, and a first through hole and a second through hole are formed in the side wall of the accommodating cavity; the flexible annular cylinder body is arranged in the accommodating cavity, and an overflowing channel is formed between the outer peripheral surface of the flexible annular cylinder body and the inner peripheral surface of the accommodating cavity; the driving mechanism is connected with the cylinder body and located in a space formed by the inner circle of the flexible annular cylinder body, and the driving mechanism is used for driving the flexible annular cylinder body to deform, so that fluid located in the overflowing channel is discharged out of the accommodating cavity through one of the first through hole and the second through hole, and the fluid located outside the overflowing channel flows into the overflowing channel through the other one of the first through hole and the second through hole.

Furthermore, the driving mechanism periodically acts in the flexible annular cylinder body, so that in the preset time, the fluid in the overflowing channel is discharged out of the accommodating cavity through the first through hole, the fluid outside the overflowing channel flows into the overflowing channel through the second through hole, after the preset time, the fluid in the overflowing channel is discharged out of the accommodating cavity through the second through hole, and the fluid outside the overflowing channel flows into the overflowing channel through the first through hole.

Further, the drive mechanism includes: the power source is connected with the cylinder body; the first end of the driving assembly is connected with a power source, the second end of the driving assembly is abutted against the inner circumferential surface of the flexible annular cylinder body, and the power source can drive the driving assembly to be rotatably arranged relative to the flexible annular cylinder body, so that in the rotating process of the second end of the driving assembly, the distance between the outer circumferential surface of the flexible annular cylinder body, which is opposite to the second end of the driving assembly, and the accommodating cavity is gradually reduced, and fluid in the moving direction of the driving assembly is extruded and discharged out of the accommodating cavity.

Further, the drive assembly includes: the first end of the first deflector rod is connected with a power source, the second end of the first deflector rod is abutted against the inner circumferential surface of the flexible annular cylinder body, and the power source can drive the first deflector rod to be rotatably arranged relative to the flexible annular cylinder body along the first direction, so that the distance between the outer circumferential surface of the flexible annular cylinder body, which is opposite to the second end of the first deflector rod, and the accommodating cavity is gradually reduced in the rotating process of the second end of the first deflector rod, so that fluid positioned in the moving direction of the first deflector rod is extruded and discharged out of the accommodating cavity.

Further, the driving assembly further includes: and the first end of the second deflector rod is connected with a power source, the second end of the second deflector rod is abutted against the inner circumferential surface of the flexible annular cylinder body, the power source can drive the second deflector rod to be rotatably arranged relative to the flexible annular cylinder body along a second direction, so that the distance between the outer circumferential surface of the flexible annular cylinder body, which is opposite to the second end of the second deflector rod, and the accommodating cavity is gradually reduced in the rotating process of the second end of the second deflector rod, so that fluid positioned in the moving direction of the second deflector rod is extruded and discharged out of the accommodating cavity, and the second direction is opposite to the first direction.

Furthermore, the first through hole and the second through hole are oppositely arranged, and the second end of the first deflector rod and the second end of the second deflector rod simultaneously rotate to the first through hole or the second through hole within the preset time.

Furthermore, a rolling bearing is arranged at the second end of at least one of the first deflector rod and the second deflector rod, and the outer peripheral surface of the rolling bearing is arranged in a manner of abutting against the inner peripheral surface of the flexible annular cylinder body.

Further, when the second end of the first shifting lever rotates to one position of the first through hole and the second through hole along the first direction, the second end of the second shifting lever rotates to the other position of the first through hole and the second through hole along the opposite direction of the first direction, and/or when the second end of the second shifting lever rotates to one position of the first through hole and the second through hole along the second direction, the second end of the first shifting lever rotates to the other position of the first through hole and the second through hole along the opposite direction of the second direction.

Furthermore, the second end of the first deflector rod makes circular motion along the first direction, the second end of the second deflector rod makes circular motion along the second direction, and the second end of the first deflector rod and the second end of the second deflector rod rotate to the first through hole or the second through hole simultaneously.

Further, when the first shifting lever and the second shifting lever rotate to the position of the first through hole, the rotation centers of the first shifting lever and the second shifting lever are arranged in a manner of being overlapped with at least one of the geometric center of the molded line of the inner wall of the accommodating cavity and the geometric center of the molded line of the outer peripheral surface of the flexible annular cylinder.

Further, the distance from the rotation centers of the first deflector rod and the second deflector rod to the inner wall surface of the flexible annular cylinder body, which is opposite to the first through hole, is greater than the distance from the rotation centers of the first deflector rod and the second deflector rod to the inner wall surface of the flexible annular cylinder body, which is opposite to the second through hole.

According to another aspect of the invention, a magnetic refrigeration device is provided, which comprises a flexible hydraulic cylinder assembly, wherein the flexible hydraulic cylinder assembly is the flexible hydraulic cylinder assembly.

By applying the technical scheme of the invention, the flexible annular cylinder body is driven to deform by arranging the driving mechanism, so that the width of the cross section of the overflowing channel is changed simultaneously in the deformation process of the flexible annular cylinder body, and then the flexible annular cylinder body can drive the fluid in the overflowing channel to flow towards the moving direction of the driving mechanism when rotating in the deformation process, so that the flexible hydraulic cylinder assembly forms a source of the flow driving force of the fluid in a circulating system, the load of a motor for driving the fluid to move in the system is effectively reduced, and the practicability of the flexible hydraulic cylinder assembly is effectively improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic cross-sectional view of a first embodiment of a flexible hydraulic cylinder assembly according to the present invention;

FIG. 2 shows a cross-sectional structural schematic of a second embodiment of a flexible hydraulic cylinder assembly according to the present invention;

FIG. 3 shows a schematic cross-sectional view of a third embodiment of a flexible hydraulic cylinder assembly according to the present invention;

FIG. 4 shows a schematic cross-sectional view of a fourth embodiment of a flexible hydraulic cylinder assembly according to the present invention;

fig. 5 shows a schematic structural view of an embodiment of the system flow path of the magnetic refrigeration apparatus according to the present invention.

Wherein the figures include the following reference numerals:

10. a cylinder body; 11. a first through hole; 12. a second through hole;

20. a flexible annular cylinder;

30. an overflow channel;

40. a drive mechanism; 41. a power source; 42. a first shift lever; 43. a second deflector rod;

50. a rolling bearing.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1-5, according to an embodiment of the present invention, a flexible hydraulic cylinder assembly is provided.

Specifically, as shown in fig. 1, the flexible hydraulic cylinder assembly includes a cylinder body 10, a flexible annular cylinder body 20, and a driving mechanism 40. The cylinder body 10 is provided with an accommodating cavity, and a first through hole 11 and a second through hole 12 are formed in the side wall of the accommodating cavity; the flexible annular cylinder 20 is arranged in the accommodating cavity, and a flow passage 30 is formed between the outer circumferential surface of the flexible annular cylinder 20 and the inner circumferential surface of the accommodating cavity. The driving mechanism 40 is connected with the cylinder 10, the driving mechanism 40 is located in a space formed by an inner circle of the flexible annular cylinder 20, and the driving mechanism 40 is used for driving the flexible annular cylinder 20 to deform so that the fluid located in the transfer channel 30 is discharged out of the accommodating cavity through one of the first through hole 11 and the second through hole 12, and the fluid located outside the transfer channel 30 flows into the transfer channel 30 through the other one of the first through hole 11 and the second through hole 12.

In this embodiment, the flexible annular cylinder body 20 is driven to deform by the driving mechanism, so that the width of the cross section of the flow passage 30 is changed by the flexible annular cylinder body 20 in the deformation process, and then the flexible annular cylinder body 20 can drive the fluid in the flow passage 30 to flow towards the direction of the movement of the driving mechanism when rotating in the deformation process, so that the flexible hydraulic cylinder assembly forms the source of the driving force for the fluid to flow in the circulating system, thereby effectively reducing the load of the motor for driving the fluid to move in the system, and effectively improving the practicability of the flexible hydraulic cylinder assembly.

The driving mechanism 40 periodically operates in the flexible annular cylinder 20, so that in a preset time, the fluid in the flow passage 30 is discharged out of the accommodating cavity through the first through hole 11, the fluid outside the flow passage 30 flows into the flow passage 30 through the second through hole 12, after the preset time, the fluid in the flow passage 30 is discharged out of the accommodating cavity through the second through hole 12, and the fluid outside the flow passage 30 flows into the flow passage 30 through the first through hole 11. The arrangement is such that external fluid can enter the accommodating cavity through the first through hole 11 and then be discharged out of the accommodating cavity through the second through hole 12 by the driving mechanism 40, and fluid outside the accommodating cavity can also enter the accommodating cavity through the second through hole 12 and then be discharged out of the accommodating cavity through the first through hole 11 to realize the effect of changing the direction of the fluid. In the embodiment, the first end of the flexible annular cylinder 20 is connected with the bottom of the accommodating cavity and sealed, and the first end of the flexible annular cylinder 20 is connected with the top of the accommodating cavity and sealed, so that the inner circle of the flexible annular cylinder 20 forms the accommodating cavity for installing the driving mechanism 40, and the problem that the driving mechanism 40 fails due to the fact that fluid enters the accommodating cavity is avoided.

Specifically, the drive mechanism 40 includes a power source 41 and a drive assembly. The power source 41 is connected to the cylinder 10. The first end of the driving assembly is connected to the power source 41, and the second end of the driving assembly is abutted to the inner circumferential surface of the flexible annular cylinder 20. The power source 41 may drive the driving assembly to be rotatably disposed relative to the flexible annular cylinder 20, so that during the rotation of the second end of the driving assembly, the distance between the outer circumferential surface of the flexible annular cylinder 20 opposite to the second end of the driving assembly and the accommodating chamber is gradually decreased to squeeze and discharge the fluid located in the moving direction of the driving assembly out of the accommodating chamber. The arrangement enables the driving assembly to interact with the flexible annular cylinder body 20, the outer wall surface of the flexible annular cylinder body 20 deforms to form a convex hull structure, fluid on one side of the moving direction of the convex hull flows under the driving of the convex hull, meanwhile, the other side of the convex hull forms a cavity structure in the moving process without fluid, and therefore fluid outside the accommodating cavity flows into the flow passage 30 through the through hole on the other side of the convex hull to supplement the cavity formed by the fluid taken away by the convex hull structure, and the arrangement ensures that the flow passage 30 is filled with the fluid in the rotating process of the driving assembly.

Further, the drive assembly includes a first toggle lever 42. A first end of the first lever 42 is connected to the power source 41. A second end of the first shift lever 42 abuts against the inner peripheral surface of the flexible annular cylinder 20. The power source 41 may drive the first shift lever 42 to rotate in a first direction relative to the flexible annular cylinder 20, such that during rotation of the second end of the first shift lever 42, a distance between an outer circumferential surface of the flexible annular cylinder 20 opposite to the second end of the first shift lever 42 and the accommodating chamber is gradually decreased to squeeze and discharge the fluid located in the moving direction of the first shift lever 42 out of the accommodating chamber. This arrangement can improve the reliability of the drive assembly.

The drive assembly further comprises a second shift lever 43. A first end of the second lever 43 is connected to the power source 41, and a second end of the second lever 43 abuts against the inner circumferential surface of the flexible annular cylinder 20. The power source 41 may drive the second shift lever 43 to be rotatably disposed in a second direction opposite to the first direction with respect to the flexible annular cylinder 20, such that a distance between an outer circumferential surface of the flexible annular cylinder 20 opposite to the second end of the second shift lever 43 and the accommodating chamber is gradually decreased during rotation of the second end of the second shift lever 43, so as to press and discharge the fluid located in the moving direction of the second shift lever 43 out of the accommodating chamber. This arrangement can further improve the reliability of the driving assembly, and in the present embodiment, as shown in fig. 1, the first direction may be a counterclockwise direction and the second direction may be a clockwise direction, so that the arrangement can improve the fluid discharge rate at the through hole by adjusting the rotation speed of the first and second levers 42 and 43.

Preferably, the first through hole 11 is disposed opposite to the second through hole 12, and the second end of the first lever 42 and the second end of the second lever 43 rotate to the first through hole 11 or the second through hole 12 at the same time within a preset time. This arrangement enables the fluid to be discharged out of the accommodation chamber in a timely manner.

To reduce frictional damage between the drive assembly and the flexible annular cylinder 20, rolling bearings 50 are provided at the second end of the first and second shift levers 42, 43. The outer peripheral surface of the rolling bearing 50 is disposed in contact with the inner peripheral surface of the flexible annular cylinder 20.

In one embodiment of the present application, when the second end of the first shift lever 42 is rotated in the first direction to one position of the first through hole 11 and the second through hole 12, the second end of the first shift lever 42 is rotated in the opposite direction to the first direction to the other position of the first through hole 11 and the second through hole 12. Alternatively, when the second end of the second shift lever 43 is rotated in the second direction to one position of the first through hole 11 and the second through hole 12, the second end of the first shift lever 42 is rotated in the opposite direction to the second direction to the other position of the first through hole 11 and the second through hole 12. That is, in the present embodiment, the rotation of the first shift lever 42 and the second shift lever 43 may not be synchronous, and the first shift lever 42 and the second shift lever 43 may not rotate to the first through hole 11 or the second through hole 12 at the same time, which also enables the fluid in the flow passage 30 to be discharged out of the accommodating chamber.

According to another embodiment of the present application, the second end of the first lever 42 moves in a circular motion along the first direction, the second end of the second lever 43 moves in a circular motion along the second direction, and the second end of the first lever 42 and the second end of the second lever 43 rotate to the first through hole 11 or the second through hole 12 simultaneously. This arrangement also enables the fluid in the transfer passage 30 to be discharged out of the receiving chamber.

The power source in this application can include the motor, is provided with drive gear on the output shaft of motor, through setting up mutually supporting of a plurality of drive gears, can realize carrying out the rotation drive of equidirectional not to first driving lever 42 and second driving lever 43. Of course, a plurality of motors may be provided to drive the first shift lever 42 and the second shift lever 43, respectively.

When the first shift lever 42 and the second shift lever 43 are both rotated to the position of the first through hole 11, the rotational centers of the first shift lever 42 and the second shift lever 43 are disposed in coincidence with at least one of the geometric center of the contour of the inner wall of the accommodation chamber and the geometric center of the contour of the outer peripheral surface of the flexible annular cylinder 20. The distance from the rotation centers of the first and second levers 42 and 43 to the inner wall surface of the flexible annular cylinder 20 opposite to the first through hole 11 is greater than the distance from the rotation centers of the first and second levers 42 and 43 to the inner wall surface of the flexible annular cylinder 20 opposite to the second through hole 12. This further improves the reliability and stability of the flexible hydraulic cylinder assembly. In the present embodiment, the rotation centers of the first and second levers 42 and 43 may be set to have the same distance from the inner wall surface of the flexible annular cylinder 20, and the lengths of the first and second levers 42 and 43 may be set to be slightly larger than the inner diameter of the flexible annular cylinder 20 in the natural state.

The flexible hydraulic cylinder assembly in the above embodiment may also be used in the technical field of refrigeration equipment, that is, according to another aspect of the present invention, there is provided a magnetic refrigeration device, including a flexible hydraulic cylinder assembly, where the flexible hydraulic cylinder assembly is the flexible hydraulic cylinder assembly in the above embodiment.

Specifically, by adopting the flexible hydraulic cylinder assembly, the problems of large flow resistance and insufficient thrust of the traditional reciprocating piston cylinder are solved, the problems of poor sealing property and easy leakage of fluid of the traditional reciprocating piston cylinder are solved, and the problems that the traditional reciprocating piston cylinder has high precision requirement and the common manufacturing process is difficult to meet are solved. Adopt the flexible hydraulic cylinder subassembly of this application, can improve the piston cylinder leakproofness, eliminate frictional resistance, this pneumatic cylinder does not have the piston, is connected with other system components and parts and forms closed system loop, and it is inside to be full of heat transfer fluid. As shown in fig. 5, the hydraulic cylinder in fig. 5 is a flexible hydraulic cylinder assembly of the present application.

The inner wall of the flexible hydraulic cylinder is extruded by the poke rod swinging around the rotation center to deform, and the deformation pushes the fluid to flow, so that the function of transferring heat or cold is achieved. As shown in fig. 1, a magnetic refrigerator refrigeration cycle flow path is formed by connecting a hydraulic cylinder and system components, and the inside of a flow passage is filled with heat exchange fluid. As shown in fig. 2, the flexible annular cylinder body is of an annular structure, the inner contour of the cylinder body is circular, and the cylinder body is fixed on the bottom of the accommodating cavity through clamping grooves which are uniformly distributed in the circumferential direction. Wherein, the cylinder body can be an integrally cast shell, a welded combined shell, a machined shell and a sheet metal part shell. Wherein, a convex structure matched with a clamping groove arranged on the cylinder body can be arranged on the flexible annular cylinder body. The outer contour of the flexible annular cylinder is in the form of a curve following a specific trajectory. The area between the inner contour of the cylinder body and the outer contour of the flexible annular cylinder body is provided with a fluid cavity, namely a flow passage. The central track curve of the overflowing channel is similar to the inner contour curve of the flexible annular cylinder body, and the circumference of the overflowing channel is larger than the inner contour curve of the flexible annular cylinder body. As shown in fig. 1, each point on the curve is gradually decreased in distance from the central axis of the base cylinder of the curve from right to left. The difference between the maximum distance and the minimum distance can be set according to the flow rate of the fluid. Obviously, the greater the difference, the greater the amount of fluid that can be pumped.

Preferably, the cross section of the cavity is oval, so that the cavity is easy to deform by extrusion. The left end and the right end of the cavity are respectively provided with a through hole, so that the hydraulic cylinder is communicated with a system circulation flow path.

A pair of poke rods are arranged in the space area in the middle of the hydraulic cylinder. The power source may drive the two tap levers to swing in 2 regions (e.g., region A, B in fig. 1) in opposite directions. The central axis of the swing of the poke rod is coincided with the central axis of the curve base circle of the inner wall of the hydraulic cylinder and the central axis of the base circle of the orbit line of the containing cavity. In the initial state, the two poke rods have a small angle difference and just cling to the inner wall of the hydraulic cylinder at the moment. Under the drive of the power source, the first deflector rod rotates anticlockwise in the area A, and the second deflector rod rotates clockwise in the area B, namely, the first deflector rod rotates from right to left. Because the distance from the curve of the inner wall to the central shaft is gradually reduced from right to left, the poke rod can extrude the contact part of the inner wall of the hydraulic cylinder in the rotating process, so that the whole hydraulic cylinder generates elastic deformation, and the left partial volume of the hydraulic cylinder is reduced. Due to the incompressibility of the liquid, the volume reduction of the hydraulic cylinder can cause the fluid on the left side of the deflector rod to flow to the outside of the hydraulic cylinder through the left end opening. The contact of the deflector rod at each position can generate the effect of flowing fluid to the outside. And after the deflector rod rotates away from a certain position, the elastic deformation of the position is recovered immediately. The volume of the area away from which the lever is rotated is restored, creating a negative pressure and fluid flow into the cylinder. The squeezing and the returning of the cylinder occur simultaneously, so that fluid flows out of the cylinder from the left end opening and into the cylinder from the right end opening. Thereby forming a circulation flow similar to that of a general hydraulic system.

As shown in fig. 2 when the tap lever is rotated to 1/4 cycles, it can be seen that the hydraulic cylinder is significantly deformed, the right end is restored, the left end is squeezed, and the volume is reduced. As shown in fig. 3, the poke rod rotates to 1/2 cycles, i.e. the left end limit position, and at this time, the poke rod starts to swing back under the driving of the power source. The local volume of the cavity on the right side of the poking rod is reduced, so that the fluid on the right side of the poking rod flows out of the hydraulic cylinder from the right end opening, and the fluid outside the hydraulic cylinder flows into the hydraulic cylinder from the left end opening. As shown in fig. 4, the tap lever is rotated to 3/4 cycles. At the moment, the cavity on the right side of the poke rod is extruded, and the cavity on the left side is restored. The tap lever will then continue to rotate back to the initial position. Eventually completing one duty cycle. And one end of the poke rod is provided with a rolling bearing, so that the poke rod is in rolling contact with the cylinder body of the hydraulic cylinder, and the abrasion is reduced. The hydraulic cylinder overcomes the problem of large load existing in the traditional magnetic refrigerator hydraulic cylinder which uses a piston to push fluid to flow. In addition, the hydraulic cylinder is totally enclosed, so that the problem of the matching sealing property of the piston and the cylinder wall in the traditional piston cylinder is solved. The contour curve of the inner wall and the cavity of the hydraulic cylinder can be selected into any type according to the requirement. The poke rod can be either swinging or continuous rotating. The cross section of the hydraulic cylinder cavity can be designed into any shape according to the working conditions of the magnetic refrigerator.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.