High-degree-of-freedom rotary refrigerator pushing assembly

Abstract

The utility model relates to the field of refrigerating machines, in particular to a high-degree-of-freedom rotary type refrigerating machine pushing assembly which comprises a cold finger, a cold storage device matched with the cold finger is arranged in the cold finger, and a magnetic core is connected to the cold storage device. The magnetic sleeve is installed in the cold finger and located at the position, corresponding to the magnetic core, of the inner wall of the cold finger; the rotary Stirling cryocooler has the beneficial effects that by embedding the magnetic sleeve in the cold finger and arranging the magnetic core at the end part of the piston, deflection of the relative position of the regenerator is limited, the stability of a movement assembly is improved, and meanwhile, the service life and the reliability of the rotary Stirling cryocooler can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of refrigeration machine, concretely is a high degree of freedom rotary refrigeration machine push -and -go subassembly. BACKGROUND

[0002] Rotary Stirling refrigeration machine is widely used in infrared refrigeration detector with its compact structure, small volume, light weight and other characteristics, rotary Stirling refrigeration machine rotating shaft rotates in the main body and drives each kinematic pair movement to realize the refrigeration function of refrigeration machine;

[0003] Rotary Stirling refrigeration machine is internally provided with push -and -go subassembly, and push -and -go subassembly has self -adjusting back -to -center function, through inlaying magnetic sleeve in the inner wall of cold finger, the magnetic core is connected with the accumulator and piston, using the same repulsion principle of magnetic core and magnetic sleeve, ensure that the piston does not easily occur deflection in the working process of accumulator, play self -back -to -center function, thereby improve the operation reliability of refrigeration machine;

[0004] The application of existing rotary Stirling refrigeration machine is relatively mature, and push -and -go subassembly reciprocates in the cold finger, but the structure of refrigeration machine cold finger is long, and it is inevitable to occur eccentric wear and collision in the movement process, so the coaxiality of its cold end and hot end is required to be higher, thus the assembly difficulty of push -and -go subassembly is big, causing the noise and jamming problem of rotary Stirling refrigeration machine. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high degree of freedom rotary refrigeration machine push -and -go subassembly to solve the problems in the above background.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] A high degree of freedom rotary refrigeration machine push -and -go subassembly, comprising:

[0008] Cold finger, the inside of cold finger is provided with the accumulator of adaptation, and the accumulator is connected with the magnetic core on it;

[0009] Magnetic sleeve, installed in the inside of cold finger, the magnetic sleeve is located at the position of the inner wall of cold finger corresponding to the magnetic core.

[0010] Preferably, the inside of cold finger is provided with a let -go slot corresponding to the position of the magnetic core, the magnetic sleeve is arranged in the inside of the let -go slot, and the magnetic sleeve is arranged between the inner wall of the cold finger and the outer surface of the accumulator through the let -go slot.

[0011] Preferably, one side of the accumulator is provided with a piston, and the magnetic core connects two end portions of the accumulator and the piston close to each other.

[0012] Preferably, a recess is arranged at the center of one end of the piston close to the regenerator, and one end of the magnetic core is inserted into the recess.

[0013] Preferably, an O-ring is arranged on the outer surface of one end of the magnetic core inserted into the recess, and the magnetic core is in sealed connection with the piston through the O-ring.

[0014] Preferably, the recess is arranged as a concave spherical surface.

[0015] Preferably, one end of the magnetic core away from the piston is inserted into the regenerator.

[0016] Preferably, the magnetic core is in a hollow structure and communicates with the interior of the regenerator and the interior of the piston.

[0017] Preferably, a cylinder is arranged at one end of the cold finger close to the magnetic sleeve, the piston is slidably arranged in the cylinder, and one end of the cylinder is inserted into the interior of the cold finger.

[0018] Preferably, a sealing ring is arranged between the end of the piston and the interior of the cold finger, and the sealing ring is arranged on one side of the magnetic sleeve.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The utility model discloses a magnetic core connected on the cold finger and the regenerator, limits the relative position of the regenerator from being deflected, improves the stability of the moving assembly, and further improves the service life and reliability of the rotary Stirling refrigerating machine. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a schematic view of the rotary refrigerating machine compression assembly of the utility model.

[0022] Fig. 2 It is a schematic view of the magnetic core and the piston connection of the utility model.

[0023] In the drawing: cold finger 1, cylinder 2, regenerator 3, piston 4, magnetic sleeve 5, magnetic core 6, O-ring 7, let go of the slot 8, recess 9. DETAILED DESCRIPTION

[0024] In order to more clearly explain the overall concept of the utility model, the following will be described in detail in the form of examples in combination with the drawings.

[0025] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description, therefore, the protection scope of the utility model is not limited by the following disclosed specific embodiments.

[0026] In addition, in the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0027] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or can be detachable connection, or can be integrated; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication or interaction relationship between two elements. However, it is noted that direct connection means that the connection between the two main bodies does not pass through an excessive structure to establish a connection relationship, but is connected to form a whole only through the connecting structure. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] Embodiment one:

[0030] Please refer to Figs. 1-2 The utility model provides a kind of technical scheme: a high degree of freedom rotary refrigerating machine push component, comprising:

[0031] Cold finger 1, the inside of the cold finger 1 is provided with compatible cold accumulator 3, and the cold accumulator 3 is connected with magnetic core 6;

[0032] Magnetic sleeve 5 is installed in the inside of the cold finger 1, and the magnetic sleeve 5 is located at the position corresponding to the magnetic core 6 of the inner wall of the cold finger 1;

[0033] The cold accumulator 3 is installed inside the cold finger 1, and then a magnetic core 6 is set at the end of the cold accumulator 3. At the same time, a magnetic sleeve 5 is embedded inside the cold finger 1 at the position corresponding to the magnetic core 6. Through the mutual repulsion between the magnetic sleeve 5 and the magnetic core 6, the relative position of the cold accumulator 3 is restricted from tilting, thereby improving the stability of the moving components.

[0034] Meanwhile, the magnetic core 6 can be installed at any position inside the cold accumulator 3, and then the magnetic sleeve 5 can be embedded inside the cold finger 1 at the position corresponding to the magnetic core 6.

[0035] Example 2:

[0036] like Fig. 2 As shown, the high-degree-of-freedom rotary refrigeration unit disclosed in Embodiment 2 of this utility model has a structure that is basically the same as that in Embodiment 1, except that:

[0037] The interior of the cold finger 1 is provided with a relief groove 8 corresponding to the position of the magnetic core 6. The magnetic sleeve 5 is disposed inside the relief groove 8. The magnetic sleeve 5 is disposed between the inner wall of the cold finger 1 and the outer surface of the cold accumulator 3 through the relief groove 8.

[0038] A cylinder 2 is provided at one end of the cold finger 1 near the magnetic sleeve 5, and one end of the cylinder 2 is inserted into the interior of the cold finger 1;

[0039] The cylinder 2 is equipped with a matching piston 4, and the magnetic core 6 is located between the accumulator 3 and the piston 4;

[0040] The piston 4 has a groove 9 at the center of one end near the cold accumulator 3, and one end of the magnetic core 6 is inserted into the groove 9.

[0041] An O-ring 7 is fitted on the outer surface of one end of the magnetic core 6 that is inserted into the groove 9, and the magnetic core 6 is sealed to the piston 4 through the O-ring 7;

[0042] The groove 9 is formed as a concave spherical surface;

[0043] The end of the magnetic core 6 away from the piston 4 is inserted into the interior of the accumulator 3;

[0044] A sealing ring is provided between the end of the piston 4 and the interior of the cold finger 1, and the sealing ring is located on one side of the magnetic sleeve 5;

[0045] A relief groove 8 is made inside the cold finger 1 at the position corresponding to the magnetic core 6. The magnetic sleeve 5 is embedded inside the relief groove 8. At the same time, the outer diameter of the magnetic sleeve 5 is matched with the diameter of the relief groove 8 to facilitate the installation of the cold storage 3. Meanwhile, the distance between the magnetic sleeve 5 and the magnetic core 6 is minimized to maximize the repulsive force between the magnetic sleeve 5 and the magnetic core 6.

[0046] The connection between the accumulator 3 and the magnetic core 6 is provided with a sealing ring, which plays a sealing role;

[0047] The piston 4 is arranged in the interior of the cylinder 2, and the end of the magnetic core 6 away from the accumulator 3 is arranged in the interior of the piston 4; the magnetic core 6 is a hollow structure and is communicated with the interior of the accumulator 3 and the interior of the piston 4; meanwhile, the recess 9 is arranged in the interior of the end of the magnetic core 6, and the recess 9 is arranged as an inner concave spherical surface; the magnetic core 6 is inserted into the interior of the recess 9; meanwhile, the O-ring 7 is sleeved on the end of the magnetic core 6; the two O-rings 7 sleeved on the outer surface of the end of the magnetic core 6 can play a sealing and centering role, so that the piston 4 and the cylinder 2 are kept away from each other during the working process, so that the accumulator 3 has a self-centering correction effect and is not easy to be deviated.

[0048] Those skilled in the art will understand that the above discussion of any embodiment is merely exemplary and is not intended to suggest the scope of the present application (including the claims) is limited to these examples; under the thought of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0049] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations or equivalents that fall within the spirit and scope of the present application are intended to be included within the scope of the present application.

Claims

1. A high-degree-of-freedom rotary refrigerator moving assembly, characterized in that, include: A cold finger (1) is provided inside the cold finger (1) with a matching cold accumulator (3) and a magnetic core (6) is connected to the cold accumulator (3); A magnetic sleeve (5) is installed inside the cold finger (1), and the magnetic sleeve (5) is located on the inner wall of the cold finger (1) at a position corresponding to the magnetic core (6).

2. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 1, characterized in that, The cold finger (1) has a relief groove (8) at the position corresponding to the magnetic core (6) inside. The magnetic sleeve (5) is disposed inside the relief groove (8). The magnetic sleeve (5) is disposed between the inner wall of the cold finger (1) and the outer surface of the cold accumulator (3) through the relief groove (8).

3. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 1, characterized in that, A piston (4) is provided on one side of the accumulator (3), and the magnetic core (6) connects the two close ends of the accumulator (3) and the piston (4).

4. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 3, characterized in that, The piston (4) has a groove (9) at the center of one end near the accumulator (3), and one end of the magnetic core (6) is inserted into the groove (9).

5. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 4, characterized in that, An O-ring (7) is fitted on the outer surface of one end of the magnetic core (6) that is inserted into the groove (9), and the magnetic core (6) is sealed to the piston (4) through the O-ring (7).

6. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 5, characterized in that, The groove (9) is formed as a concave spherical surface.

7. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 3, characterized in that, The end of the magnetic core (6) away from the piston (4) is inserted into the interior of the accumulator (3).

8. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 3, characterized in that, The magnetic core (6) has a hollow structure and is connected to the interior of the accumulator (3) and the interior of the piston (4).

9. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 3, characterized in that, A cylinder (2) is provided at one end of the cold finger (1) near the magnetic sleeve (5), and the piston (4) slides inside the cylinder (2). One end of the cylinder (2) is inserted into the interior of the cold finger (1).

10. The high-degree-of-freedom rotary refrigerator moving assembly according to claim 9, characterized in that, A sealing ring is provided between the end of the piston (4) and the interior of the cold finger (1), and the sealing ring is located on one side of the magnetic sleeve (5).

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