Flexible hydraulic cylinder assembly and magnetic refrigeration device having the same

Abstract

The present invention provides a flexible hydraulic cylinder assembly and a magnetic refrigeration device having the same. The flexible hydraulic cylinder assembly includes a cylinder body, the cylinder body has a containing cavity, and a first through hole and a second through hole are opened on the side wall of the containing cavity; a flexible annular cylinder body, the flexible annular cylinder body is arranged in the containing cavity, and a flow channel is formed between the outer circumference of the flexible annular cylinder body and the inner circumference of the containing cavity; a driving mechanism, the driving mechanism is connected to the cylinder body, the driving mechanism is located in the space formed by the inner circle of the flexible annular cylinder body, and the driving mechanism is used to drive the flexible annular cylinder body to deform, so that the fluid in the flow channel is discharged out of the containing cavity through one of the first through hole and the second through hole, and the fluid outside the flow channel is flowed into the flow channel through the other of the first through hole and the second through hole. The load of the motor used to drive the movement of the fluid in the system is effectively reduced, and the practicality of the flexible hydraulic cylinder assembly is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic refrigeration equipment, and in particular to a flexible hydraulic cylinder assembly and a magnetic refrigeration device having the same. Background Art

[0002] The structural principle of the current mainstream magnetic refrigerator is to use a cam to drive the piston to make reciprocating linear motion in the piston cylinder, thereby promoting the flow of the heat exchange fluid so that it can play a role in heat exchange and transfer, and finally the magnetic refrigerator can play a role in cooling and heating. The manufacturing precision requirements of the piston cylinder are relatively high, and most of the current processing technology levels cannot meet the processing precision requirements. In addition, since the system flow path of the entire unit is often complex, there is a large flow resistance inside. The heat exchange fluid is entirely driven by the cam to drive the piston, which will bring a large load to the motor. If the motor torque does not meet the requirements, it is necessary to connect a reducer to increase the torque, which will cause the structure of the whole machine to be too complicated. At the same time, the sealing problem of the piston cylinder in the prior art is also a difficult problem that affects the normal operation of the unit. If the matching clearance between the piston cylinder and the piston is too large, the sealing is poor and there is a risk of fluid leakage. If the matching clearance is too small, the friction between the two during the mutual sliding process is very large, further deteriorating the working conditions of the piston cylinder. Summary of the invention

[0003] The main purpose of the present invention is to provide a flexible hydraulic cylinder assembly and a magnetic refrigeration device having the same, so as to solve the problem in the prior art that the motor load is large due to the need to drive the fluid movement through a motor in the compressor system.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a flexible hydraulic cylinder assembly, comprising: a cylinder body, the cylinder body having a accommodating cavity, a first through hole and a second through hole being opened on the side wall of the accommodating cavity; a flexible annular cylinder body, the flexible annular cylinder body is arranged in the accommodating cavity, and a flow channel is formed between the outer circumferential surface of the flexible annular cylinder body and the inner circumferential surface of the accommodating cavity; a driving mechanism, the driving mechanism is connected to the cylinder body, the driving mechanism is located in the space formed by the inner circle of the flexible annular cylinder body, and the driving mechanism is used to drive the flexible annular cylinder body to deform, so that the fluid in the flow channel is discharged out of the accommodating cavity through one of the first through hole and the second through hole, and the fluid outside the flow channel is flowed into the flow channel through the other of the first through hole and the second through hole.

[0005] Furthermore, the driving mechanism operates periodically within the flexible annular cylinder so that within a preset time, the fluid in the flow channel is discharged from the accommodating chamber through the first through hole, and the fluid outside the flow channel flows into the flow channel through the second through hole. After the preset time, the fluid in the flow channel is discharged from the accommodating chamber through the second through hole, and the fluid outside the flow channel flows into the flow channel through the first through hole.

[0006] Furthermore, the driving mechanism includes: a power source, which is connected to the cylinder body; a driving component, wherein the first end of the driving component is connected to the power source, and the second end of the driving component is abutted against the inner circumference of the flexible annular cylinder body. The power source can drive the driving component to be rotatably arranged relative to the flexible annular cylinder body, so that during the rotation of the second end of the driving component, the distance between the outer circumference of the flexible annular cylinder body opposite to the second end of the driving component and the accommodating chamber is gradually reduced, so as to squeeze the fluid in the moving direction of the driving component out of the accommodating chamber.

[0007] Furthermore, the driving assembly includes: a first lever, a first end of the first lever is connected to a power source, a second end of the first lever is in contact with an inner circumferential surface of the flexible annular cylinder body, and the power source can drive the first lever to rotate relative to the flexible annular cylinder body in a first direction, so that during the rotation of the second end of the first lever, a distance between an outer circumferential surface of the flexible annular cylinder body opposite to the second end of the first lever and the accommodating chamber is gradually reduced, so as to squeeze the fluid in the moving direction of the first lever out of the accommodating chamber.

[0008] Furthermore, the driving assembly also includes: a second lever, a first end of the second lever is connected to a power source, a second end of the second lever is in contact with an inner circumferential surface of the flexible annular cylinder body, and the power source can drive the second lever to rotate relative to the flexible annular cylinder body along a second direction, so that during the rotation of the second end of the second lever, a distance between an outer circumferential surface of the flexible annular cylinder body opposite to the second end of the second lever and the accommodating chamber is gradually reduced, so as to squeeze the fluid in the moving direction of the second lever out of the accommodating chamber, and the second direction is opposite to the first direction.

[0009] Furthermore, the first through hole and the second through hole are arranged opposite to each other, and within a preset time, the second end of the first shifting rod and the second end of the second shifting rod rotate to the first through hole or the second through hole at the same time.

[0010] Furthermore, a rolling bearing is disposed at the second end of at least one of the first shifting rod and the second shifting rod, and the outer circumferential surface of the rolling bearing is disposed in contact with the inner circumferential surface of the flexible annular cylinder.

[0011] Further, when the second end of the first lever rotates along the first direction to a position in the first through hole and the second through hole, the second end of the second lever rotates along the direction opposite to the first direction to another position in the first through hole and the second through hole, and / or, when the second end of the second lever rotates along the second direction to a position in the first through hole and the second through hole, the second end of the first lever rotates along the direction opposite to the second direction to another position in the first through hole and the second through hole.

[0012] Furthermore, the second end of the first lever makes a circular motion along the first direction, the second end of the second lever makes a circular motion along the second direction, and the second end of the first lever and the second end of the second lever rotate to the first through hole or the second through hole simultaneously.

[0013] Furthermore, when the first lever and the second lever are rotated to the first through hole position, the rotation centers of the first lever and the second lever coincide with at least one of the geometric centers of the contour of the inner wall of the accommodating cavity and the geometric centers of the contour of the outer circumferential surface of the flexible annular cylinder.

[0014] Furthermore, the distance from the rotation center of the first lever and the second lever to the inner wall surface of the flexible annular cylinder body opposite to the first through hole is greater than the distance from the rotation center of the first lever and the second lever to the inner wall surface of the flexible annular cylinder body opposite to the second through hole.

[0015] According to another aspect of the present invention, a magnetic refrigeration device is provided, comprising a flexible hydraulic cylinder assembly, wherein the flexible hydraulic cylinder assembly is the flexible hydraulic cylinder assembly described above.

[0016] By applying the technical solution of the present invention, a driving mechanism is set to drive the flexible annular cylinder body to deform, so that the width of the cross-section of the flow channel is simultaneously changed during the deformation of the flexible annular cylinder body, and then the flexible annular cylinder body can drive the fluid in the flow channel to flow in the direction of the driving mechanism when it rotates during the deformation, so that the flexible hydraulic cylinder assembly forms a source of driving force for the flow of the fluid in the circulation system, and then effectively reduces the load of the motor used to drive the movement of the fluid in the system, and effectively improves the practicality of the flexible hydraulic cylinder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It shows a cross-sectional structural schematic diagram of a first embodiment of a flexible hydraulic cylinder assembly according to the present invention;

[0019] Figure 2 It shows a cross-sectional structural schematic diagram of a second embodiment of a flexible hydraulic cylinder assembly according to the present invention;

[0020] Figure 3 A cross-sectional structural schematic diagram of a third embodiment of a flexible hydraulic cylinder assembly according to the present invention is shown;

[0021] Figure 4 A cross-sectional structural schematic diagram of a fourth embodiment of a flexible hydraulic cylinder assembly according to the present invention is shown;

[0022] Figure 5 A structural schematic diagram of an embodiment of a system flow path of a magnetic refrigeration device according to the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Cylinder body; 11. First through hole; 12. Second through hole;

[0025] 20. Flexible annular cylinder;

[0026] 30. Current passage;

[0027] 40. driving mechanism; 41. power source; 42. first lever; 43. second lever;

[0028] 50. Rolling bearings. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0033] Combination Figures 1 to 5 As shown, according to an embodiment of the present invention, a flexible hydraulic cylinder assembly is provided.

[0034] Specifically, Figure 1 As shown, 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 has a containing cavity, and a first through hole 11 and a second through hole 12 are opened on the side wall of the containing cavity; the flexible annular cylinder body 20 is arranged in the containing cavity, and a flow passage 30 is formed between the outer circumference of the flexible annular cylinder body 20 and the inner circumference of the containing cavity. The driving mechanism 40 is connected to the cylinder body 10, and the driving mechanism 40 is located in the space formed by the inner circle of the flexible annular cylinder body 20. The driving mechanism 40 is used to drive the flexible annular cylinder body 20 to deform, so that the fluid in the flow passage 30 is discharged from the containing cavity through one of the first through hole 11 and the second through hole 12, and the fluid outside the flow passage 30 is flowed into the flow passage 30 through the other of the first through hole 11 and the second through hole 12.

[0035] In this embodiment, a driving mechanism is provided to drive the flexible annular cylinder body 20 to deform, so that the flexible annular cylinder body 20 simultaneously changes the width of the cross section of the flow channel 30 during the deformation process, and then the flexible annular cylinder body 20 can drive the fluid in the flow channel 30 to flow in the direction of the driving mechanism when it rotates during the deformation process, so that the flexible hydraulic cylinder assembly forms a source of driving force for the flow of fluid in the circulation system, thereby effectively reducing the load of the motor used to drive the movement of the fluid in the system, and effectively improving the practicality of the flexible hydraulic cylinder assembly.

[0036] The driving mechanism 40 operates periodically in the flexible annular cylinder 20, so that within a preset time, the fluid in the flow channel 30 is discharged from the accommodating chamber through the first through hole 11, and the fluid outside the flow channel 30 flows into the flow channel 30 through the second through hole 12. After the preset time, the fluid in the flow channel 30 is discharged from the accommodating chamber through the second through hole 12, and the fluid outside the flow channel 30 flows into the flow channel 30 through the first through hole 11. This arrangement allows the driving mechanism 40 to allow the external fluid to enter the accommodating chamber through the first through hole 11 and then be discharged from the accommodating chamber through the second through hole 12, and also allows the fluid outside the accommodating chamber to enter the accommodating chamber through the second through hole 12 and then be discharged from the accommodating chamber through the first through hole 11 to achieve the effect of changing the direction of the fluid. Among them, in this embodiment, the first end of the flexible annular cylinder body 20 is connected to the bottom of the accommodating cavity and sealed, and the first end of the flexible annular cylinder body 20 is connected to the top of the accommodating cavity and sealed. This arrangement enables the inner circle of the flexible annular cylinder body 20 to form an accommodating cavity for installing the driving mechanism 40, thereby avoiding the problem of fluid entering the accommodating cavity and causing the driving mechanism 40 to fail.

[0037] Specifically, the driving mechanism 40 includes a power source 41 and a driving assembly. The power source 41 is connected to the cylinder body 10. The first end of the driving assembly is connected to the power source 41, and the second end of the driving assembly is in contact with the inner circumference 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 during the rotation of the second end of the driving assembly, the distance between the outer circumference of the flexible annular cylinder body 20 opposite to the second end of the driving assembly and the accommodating chamber is gradually reduced, so as to squeeze the fluid located in the moving direction of the driving assembly out of the accommodating chamber. Such arrangement enables the driving component to interact with the flexible annular cylinder 20, so that the outer wall surface of the flexible annular cylinder 20 is deformed to form a convex hull structure, and the fluid on one side of the moving direction of the convex hull flows under the drive of the convex hull. At the same time, since a cavity structure without fluid is formed during the movement on the other side of the convex hull, the fluid outside the accommodating cavity flows into the flow channel 30 through the through hole on the other side of the convex hull to supplement the cavity formed by the fluid carried away by the convex hull structure. Such arrangement ensures that the flow channel 30 is filled with fluid during the rotation of the driving component.

[0038] Further, the driving assembly includes a first lever 42. The first end of the first lever 42 is connected to the power source 41. The second end of the first lever 42 abuts against the inner circumference of the flexible annular cylinder 20. The power source 41 can drive the first lever 42 to rotate relative to the flexible annular cylinder 20 along the first direction, so that during the rotation of the second end of the first lever 42, the distance between the outer circumference of the flexible annular cylinder 20 opposite to the second end of the first lever 42 and the accommodating chamber is gradually reduced, so as to squeeze the fluid in the moving direction of the first lever 42 out of the accommodating chamber. Such a setting can improve the reliability of the driving assembly.

[0039] The drive assembly also includes a second lever 43. The first end of the second lever 43 is connected to the power source 41, and the second end of the second lever 43 is in contact with the inner circumference of the flexible annular cylinder 20. The power source 41 can drive the second lever 43 to rotate relative to the flexible annular cylinder 20 along the second direction, so that during the rotation of the second end of the second lever 43, the distance between the outer circumference of the flexible annular cylinder 20 opposite to the second end of the second lever 43 and the accommodating chamber is gradually reduced, so as to squeeze the fluid in the moving direction of the second lever 43 out of the accommodating chamber, and the second direction is opposite to the first direction. This arrangement can further improve the reliability of the drive assembly. In this embodiment, if Figure 1 As shown, the first direction may be counterclockwise, and the second direction may be clockwise. This arrangement can increase the fluid discharge rate at the through hole by adjusting the rotation speed of the first lever 42 and the second lever 43 .

[0040] Preferably, the first through hole 11 and the second through hole 12 are arranged opposite to each other, and within a preset time, 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. This arrangement enables the fluid to be discharged from the accommodating cavity in a timely manner.

[0041] In order to reduce friction damage between the drive assembly and the flexible annular cylinder 20 , a rolling bearing 50 is disposed at the second end of the first lever 42 and the second lever 43 . The outer circumference of the rolling bearing 50 is disposed in contact with the inner circumference of the flexible annular cylinder 20 .

[0042] In one embodiment of the present application, when the second end of the first lever 42 rotates along the first direction to one of the first through hole 11 and the second through hole 12, the second end of the first lever 42 rotates along the direction opposite to the first direction to another of the first through hole 11 and the second through hole 12. Alternatively, when the second end of the second lever 43 rotates along the second direction to one of the first through hole 11 and the second through hole 12, the second end of the first lever 42 rotates along the direction opposite to the second direction to another of the first through hole 11 and the second through hole 12. That is, in this embodiment, the rotation of the first lever 42 and the second lever 43 may not be synchronous, and the first lever 42 and the second lever 43 may not be simultaneously rotated to the first through hole 11 or the second through hole 12, and the fluid in the flow channel 30 can also be discharged from the accommodating cavity.

[0043] According to another embodiment of the present application, the second end of the first lever 42 performs a circular motion along the first direction, and the second end of the second lever 43 performs 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 simultaneously rotate to the first through hole 11 or the second through hole 12. This arrangement can also realize the discharge of the fluid in the flow channel 30 out of the accommodating cavity.

[0044] The power source in the present application may include a motor, and a driving gear is provided on the output shaft of the motor. By providing a plurality of driving gears to cooperate with each other, the first lever 42 and the second lever 43 can be driven to rotate in different directions. Of course, a plurality of motors may also be provided to drive the first lever 42 and the second lever 43 respectively.

[0045] When the first lever 42 and the second lever 43 are both rotated to the position of the first through hole 11, the rotation centers of the first lever 42 and the second lever 43 are arranged to coincide with at least one of the geometric center of the profile of the inner wall of the accommodating cavity and the geometric center of the profile of the outer peripheral surface of the flexible annular cylinder body 20. The distance from the rotation centers of the first lever 42 and the second lever 43 to the inner wall surface of the flexible annular cylinder body 20 opposite to the first through hole 11 is greater than the distance from the rotation centers of the first lever 42 and the second lever 43 to the inner wall surface of the flexible annular cylinder body 20 opposite to the second through hole 12. This can further improve the reliability and stability of the flexible hydraulic cylinder assembly. In this embodiment, the rotation centers of the first lever 42 and the second lever 43 can also be set to be equal to the distance from the inner wall surface of the flexible annular cylinder body 20, and the lengths of the first lever 42 and the second lever 43 can be set to be slightly larger than the inner diameter of the flexible annular cylinder body 20 when it is in a natural state.

[0046] The flexible hydraulic cylinder assembly in the above embodiment can also be used in the technical field of refrigeration equipment. That is, according to another aspect of the present invention, a magnetic refrigeration device is provided, comprising a flexible hydraulic cylinder assembly, which is the flexible hydraulic cylinder assembly in the above embodiment.

[0047] Specifically, the flexible hydraulic cylinder assembly solves the problem of large flow resistance and insufficient thrust of the traditional reciprocating piston cylinder, the problem of poor sealing and easy fluid leakage of the traditional reciprocating piston cylinder, and the problem of high precision requirements of the traditional reciprocating piston cylinder that are difficult to meet with general manufacturing processes. The flexible hydraulic cylinder assembly of the present application can improve the sealing of the piston cylinder and eliminate friction resistance. The hydraulic cylinder does not have a piston and is connected with other system components to form a closed system loop, which is filled with heat exchange fluid. Figure 5 As shown, Figure 5 The hydraulic cylinder in the figure is a flexible hydraulic cylinder assembly of the present application.

[0048] The inner wall of the flexible hydraulic cylinder is squeezed by a toggle rod that swings around the center of rotation, causing it to deform. This deformation is used to promote the flow of fluid, thereby transferring heat or cold. Figure 1 As shown in the figure, the magnetic refrigerator refrigeration circulation circuit is composed of a hydraulic cylinder connected to system components, and the flow channel is filled with heat exchange fluid. Figure 2 As shown, the flexible annular cylinder body is an annular structure, and the inner contour of the cylinder body is circular, and is fixed to the bottom of the accommodating cavity by means of circumferentially evenly distributed slots. The cylinder body may be an integral cast shell, a welded assembly shell, a machined shell, or a sheet metal shell. A raised structure that cooperates with the slots provided on the cylinder body may be provided on the flexible annular cylinder body. The outer contour of the flexible annular cylinder body is in the form of a curve following a specific trajectory. A fluid containing cavity, i.e., a flow channel, is provided in the area between the inner contour of the cylinder body and the outer contour of the flexible annular cylinder body. The central trajectory curve of the flow channel is similar to the inner contour curve of the flexible annular cylinder body, and the circumference is greater than the inner contour curve of the flexible annular cylinder body. As shown Figure 1 As shown in the figure, the distance from each point on the curve to the central axis of the base cylinder of the curve gradually decreases 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 larger the difference, the greater the amount of fluid that can be pumped out.

[0049] Preferably, the cross section of the cavity is set to be an ellipse, which is easy to be squeezed and deformed. A through hole is set at each of the left and right ends of the cavity, so that the hydraulic cylinder is connected to the system circulation flow path.

[0050] A pair of toggle rods are set in the space area in the middle of the hydraulic cylinder. The power source can drive the two toggle rods to move in opposite directions in two areas (such as Figure 1The toggle lever swings in the A and B areas of the hydraulic cylinder. The central axis of the swing of the toggle lever coincides with the central axis of the base circle of the inner wall curve of the hydraulic cylinder and the central axis of the base circle of the cavity trajectory line. In the initial state, the two toggle levers are at a small angle, and at this time, they are just against the inner wall of the hydraulic cylinder. Driven by the power source, the first toggle lever rotates counterclockwise in area A, and the second toggle lever rotates clockwise in area B, that is, from right to left. Since the distance from the inner wall curve to the central axis gradually decreases from right to left, during the rotation process, the toggle lever will produce a squeezing effect on the contact point of the inner wall of the hydraulic cylinder, causing the entire hydraulic cylinder to produce elastic deformation, and the local volume on the left side will decrease. Since the liquid is incompressible, the reduction in the volume of the hydraulic cylinder will cause the fluid on the left side of the toggle lever to flow to the outside of the hydraulic cylinder through the left end opening. Every place where the toggle lever contacts will produce the effect of fluid flowing to the outside. After the toggle lever turns away from a certain place, the elastic deformation of the place will be restored immediately. The volume of the area where the toggle lever rotates away will be restored, generating negative pressure, and the fluid will flow into the hydraulic cylinder. The hydraulic cylinder is squeezed and restored at the same time, so the fluid flows out of the hydraulic cylinder from the left opening and into the hydraulic cylinder from the right opening at the same time, thus forming a circulation flow similar to that of a general hydraulic system.

[0051] like Figure 2 The figure shows the situation when the toggle lever is rotated to 1 / 4 cycle. It can be seen that the hydraulic cylinder has obvious deformation, its right end has been restored, the left end has been squeezed, and the volume has decreased. Figure 3 As shown in the figure, the toggle lever is rotated to the 1 / 2 cycle, i.e., the left end limit position. At this time, driven by the power source, the toggle lever begins to swing back. The partial volume of the right chamber of the toggle lever decreases, causing the fluid on the right side to flow out of the hydraulic cylinder from the right end opening, and the fluid outside the hydraulic cylinder to flow into the hydraulic cylinder from the left end opening. Figure 4 As shown, the toggle lever is rotated to 3 / 4 of the cycle. At this time, the cavity on the right side of the toggle lever is squeezed, and the cavity on the left side has been restored. Then the toggle lever will continue to rotate and return to the initial position. Finally, a working cycle is completed. A rolling bearing is installed at one end of the toggle lever, so that it is in rolling contact with the cylinder body of the hydraulic cylinder, reducing wear. The hydraulic cylinder overcomes the problem of large load in the traditional magnetic refrigerator hydraulic cylinder using piston to drive the fluid flow. In addition, the hydraulic cylinder is fully enclosed, avoiding the problem of sealing between the piston and the cylinder wall in the traditional piston cylinder. The inner wall and cavity contour curve of the hydraulic cylinder can be selected as any type according to needs. The toggle lever can be either swinging or continuously rotating. The cross-section of the hydraulic cylinder cavity can be designed into any shape according to the working conditions of the magnetic refrigerator.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0054] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flexible hydraulic cylinder assembly, It is characterized in that include: A cylinder body (10), the cylinder body (10) having a receiving cavity, a side wall of the receiving cavity being provided with a first through hole (11) and a second through hole (12); A flexible annular cylinder (20), the flexible annular cylinder (20) being arranged in the accommodating cavity, and a flow passage (30) being formed between an outer circumferential surface of the flexible annular cylinder (20) and an inner circumferential surface of the accommodating cavity; a driving mechanism (40), the driving mechanism (40) being connected to the cylinder body (10), the driving mechanism (40) being located in a space formed by the inner circle of the flexible annular cylinder body (20), the driving mechanism (40) being used to drive the flexible annular cylinder body (20) to deform, so that the fluid in the flow passage (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 outside the flow passage (30) is flowed into the flow passage (30) through the other of the first through hole (11) and the second through hole (12); The driving mechanism (40) operates periodically in the flexible annular cylinder (20), so that within a preset time, the fluid in the flow passage (30) is discharged from the accommodating chamber through the first through hole (11), and 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 from the accommodating chamber 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 driving mechanism (40) comprises: A power source (41), the power source (41) being connected to the cylinder body (10); A driving assembly, wherein a first end of the driving assembly is connected to the power source (41), and a second end of the driving assembly is in contact with an inner circumferential surface of the flexible annular cylinder (20), and the power source (41) can drive the driving assembly to be rotatably arranged relative to the flexible annular cylinder (20), so that during the rotation of the second end of the driving assembly, a distance between an outer circumferential surface of the flexible annular cylinder (20) opposite to the second end of the driving assembly and the accommodating chamber is gradually reduced, so as to squeeze the fluid located in the moving direction of the driving assembly out of the accommodating chamber; A first lever (42), wherein a first end of the first lever (42) is connected to the power source (41), and a second end of the first lever (42) is in contact with an inner circumferential surface of the flexible annular cylinder (20), and the power source (41) can drive the first lever (42) to rotate relative to the flexible annular cylinder (20) in a first direction, so that during the rotation of the second end of the first lever (42), a distance between an outer circumferential surface of the flexible annular cylinder (20) opposite to the second end of the first lever (42) and the accommodating chamber is gradually reduced, so that the fluid located in the moving direction of the first lever (42) is squeezed out of the accommodating chamber; A second lever (43), wherein the first end of the second lever (43) is connected to the power source (41), and the second end of the second lever (43) is in contact with the inner circumferential surface of the flexible annular cylinder (20). The power source (41) can drive the second lever (43) to rotate relative to the flexible annular cylinder (20) in a second direction, so that during the rotation of the second end of the second lever (43), the distance between the outer circumferential surface of the flexible annular cylinder (20) opposite to the second end of the second lever (43) and the accommodating chamber is gradually reduced, so that the fluid located in the moving direction of the second lever (43) is squeezed out of the accommodating chamber, and the second direction is opposite to the first direction.

2. The flexible hydraulic cylinder assembly according to claim 1, It is characterized in that The first through hole (11) and the second through hole (12) are arranged opposite to each other, and within a preset time, the second end of the first lever (42) and the second end of the second lever (43) rotate simultaneously to the first through hole (11) or the second through hole (12).

3. The flexible hydraulic cylinder assembly according to claim 1, It is characterized in that A rolling bearing (50) is provided at the second end of at least one of the first lever (42) and the second lever (43), and the outer circumferential surface of the rolling bearing (50) is disposed in contact with the inner circumferential surface of the flexible annular cylinder (20).

4. The flexible hydraulic cylinder assembly according to claim 1, It is characterized in that When the second end of the first lever (42) rotates along the first direction to a position between the first through hole (11) and the second through hole (12), the second end of the second lever (43) rotates along a direction opposite to the first direction to another position between the first through hole (11) and the second through hole (12), and / or When the second end of the second lever (43) rotates along the second direction to a position in the first through hole (11) and the second through hole (12), the second end of the first lever (42) rotates along a direction opposite to the second direction to another position in the first through hole (11) and the second through hole (12).

5. The flexible hydraulic cylinder assembly according to claim 1, It is characterized in that The second end of the first lever (42) performs a circular motion along the first direction, and the second end of the second lever (43) performs a circular motion along the second direction. The second end of the first lever (42) and the second end of the second lever (43) rotate simultaneously to the first through hole (11) or the second through hole (12).

6. The flexible hydraulic cylinder assembly according to claim 1, It is characterized in that When the first lever (42) and the second lever (43) are both rotated to the position of the first through hole (11), the rotation centers of the first lever (42) and the second lever (43) are arranged to coincide with at least one of the geometric centers of the contour lines of the inner wall of the accommodating cavity and the geometric centers of the contour lines of the outer peripheral surface of the flexible annular cylinder body (20).

7. The flexible hydraulic cylinder assembly according to claim 6, It is characterized in that The distance between the rotation centers of the first lever (42) and the second lever (43) and the inner wall surface of the flexible annular cylinder (20) opposite to the first through hole (11) is greater than the distance between the rotation centers of the first lever (42) and the second lever (43) and the inner wall surface of the flexible annular cylinder (20) opposite to the second through hole (12).

8. A magnetic refrigeration device, comprising a flexible hydraulic cylinder assembly, It is characterized in that The flexible hydraulic cylinder assembly is the flexible hydraulic cylinder assembly according to any one of claims 1 to 7.

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