Damping mechanism of Stirling cryocooler

Abstract

The damping mechanism comprises a base, an annular plate is arranged on the inner side of the base, an inner cavity for containing a buffer solution is formed in the annular plate, a connecting plate is rotationally installed on the inner cavity, a clamping seat for fixing the Stirling cryocooler is arranged on the connecting plate, a first spring is fixed to the upper end of the connecting plate, and a second spring is fixed to the lower end of the connecting plate. The other end of the first spring is connected to the clamping base. According to the Stirling cryocooler, the first springs for buffering up and down are connected between the clamping bases and the connecting plates so as to conduct damping on up-down vibration of the Stirling cryocooler, the buffer solution is placed in the inner cavity, when the multiple connecting plates swing due to vibration of the Stirling cryocooler, the buffer solution hinders and buffers swing of the connecting plates so as to absorb vibration of the Stirling cryocooler in the horizontal direction, and therefore the stability of the Stirling cryocooler is improved. Therefore, shock absorption of the Stirling cryocooler in the vertical direction and the horizontal direction is achieved, the shock absorption effect is better, and meanwhile noise generated by shock is reduced.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a shock absorption mechanism for a Stirling refrigeration machine. Background Technology

[0002] Since its invention, the Stirling refrigerator has garnered significant attention in the cryogenic refrigeration field due to its simple structure, reliable operation, long service life, and trouble-free operation exceeding ten years. However, vibration is unavoidable during operation, resulting in operating noise. Furthermore, prolonged vibration can damage the refrigerator's structure, potentially impacting its lifespan. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a shock absorption mechanism for a Stirling refrigerator.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A shock-absorbing mechanism for a Stirling refrigerator includes a base, an annular plate on the inner side of the base, an inner cavity for accommodating a buffer solution in the annular plate, a connecting plate rotatably mounted on the inner cavity, a mounting bracket for fixing the Stirling refrigerator on the connecting plate, a spring fixed to the upper end of the connecting plate, and the other end of the spring connected to the mounting bracket.

[0006] Preferably, there are multiple abutments, which are distributed around the perimeter of the card holder below.

[0007] Preferably, the side wall of the base is provided with an inwardly extending guide plate, and an abutment plate that abuts against the outer side wall of the card seat is fitted on the guide plate. A second spring is fixed on the side wall of the base, and the other end of the second spring is connected to the abutment plate.

[0008] Preferably, the lower end face of the abutment plate abuts against the upper ends of the annular plate and the guide plate.

[0009] Preferably, the connecting plates and the abutment plates are distributed in a one-to-one correspondence, and the moving directions of the corresponding connecting plates and abutment plates are arranged parallel to each other.

[0010] Preferably, the card holder is provided with a surrounding panel on its outer periphery, and the surrounding panel is spaced apart above the backing plate.

[0011] Preferably, the enclosure is positioned above the inner cavity.

[0012] Preferably, the inner side of the card holder is provided with a card strip for attaching the Stirling refrigeration unit.

[0013] The beneficial effects of this utility model are:

[0014] By rotating and installing a connecting plate inside the inner cavity of the annular plate, and setting a bracket above the connecting plate to fix the Stirling refrigerator, and connecting the bracket and the connecting plate with upper and lower buffer springs to dampen the vertical vibration of the Stirling refrigerator, a buffer solution is placed inside the inner cavity. When multiple connecting plates swing due to the vibration of the Stirling refrigerator, the buffer solution hinders and buffers the swing of the connecting plates to absorb the horizontal vibration of the Stirling refrigerator, thereby achieving vertical and horizontal vibration damping of the Stirling refrigerator, so as to improve the vibration damping effect and reduce the noise generated by vibration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is a structural schematic diagram of the base of this utility model.

[0020] In the diagram: base 1, annular plate 11, inner cavity 12, guide plate 13, connecting plate 14, spring 141, abutment plate 2, spring 21, card seat 3, surrounding plate 31, card strip 32. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] In the description of this specification, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figures 1-5 As shown, a shock absorption mechanism for a Stirling refrigerator includes a base 1, an annular plate 11 is provided on the inner side of the base 1, the annular plate 11 is a quadrilateral connecting plate with its ends connected, the lower end of the annular plate 11 is fixed on the base 1, and the annular plate 11 extends upward and has an opening at its upper end.

[0024] The annular plate 11 has an inner cavity 12 for containing a buffer solution, which can be water. A connecting plate 14 is rotatably mounted on the inner cavity 12. The lower end of the connecting plate 14 is hinged to the base 1. There are multiple connecting plates 14. A mounting bracket 3 for fixing the Stirling refrigerator is provided on the connecting plate 14. A mounting strip 32 for fixing the Stirling refrigerator is provided on the inner side of the mounting bracket 3. The mounting strip 32 is used to fix the Stirling refrigerator.

[0025] Specifically, there are four abutment plates 14. The card holder 3 is a square body with an open top. The abutment plates 14 are distributed around the bottom of the card holder 3, that is, the four abutment plates 14 are distributed on the four sides of the lower end face of the card holder 3.

[0026] Furthermore, a spring 141 is fixed to the upper end of the connecting plate 14, and the other end of the spring 141 is connected to the card holder 3 so as to dampen the up-and-down vibration of the Stirling refrigerator through the spring 141.

[0027] The connecting plate 14 is flexibly connected to the bottom of the card holder 3 by a spring 141. When the Stirling refrigerator vibrates to cause the connecting plate 14 to swing on both sides, that is, when multiple connecting plates 14 swing due to the vibration of the Stirling refrigerator, the buffer solution hinders and buffers the swing of the connecting plate 14 to absorb the horizontal vibration of the Stirling refrigerator. In turn, the connecting plate 14 and the spring 141 cooperate to achieve vertical and horizontal vibration reduction of the Stirling refrigerator, so as to improve the vibration reduction effect of this embodiment and reduce the noise caused by vibration.

[0028] The base 1 has an inwardly extending guide plate 13 on its side wall. An abutment plate 2 that abuts against the outer side wall of the card seat 3 is attached to the guide plate 13. The lower end of the abutment plate 2 abuts against the upper end of the annular plate 11 and the guide plate 13. The annular plate 11 and the guide plate 13 slide and guide the abutment plate 2 to move horizontally inward and outward against the card seat 3. The connecting plate 14 is distributed one-to-one with the abutment plate 2, and the moving directions of the corresponding connecting plate 14 and the abutment plate 2 are parallel to each other, that is, the corresponding abutment plate 2 and the connecting plate 14 can move (or deflect) in the left-right or front-back direction.

[0029] A second spring 21 is fixed on the side wall of the base 1. The other end of the second spring 21 is connected to the abutment plate 2 so that the abutment plate 2 is driven by the second spring 21 to abut against the outer side wall of the card seat 3. In turn, the second spring 21 and the abutment plate 2 cooperate to abut against the outer periphery of the card seat 3 to provide stable support for the card seat 3. It can also provide a certain buffer and shock absorption for the card seat 3 and the Stirling refrigerator, so as to further improve the shock absorption effect of this embodiment.

[0030] Furthermore, in this embodiment, shock absorption is achieved by combining the connecting plate 14 with the buffer solution. Compared with the existing shock absorption method that only uses springs, this greatly improves the overall shock absorption performance and stability, meaning that even after the shock absorption performance of the springs has deteriorated, it can still achieve a good shock absorption effect.

[0031] The card holder 3 is provided with a surrounding plate 31 on its outer periphery. The surrounding plate 31 is spaced above the abutment plate 2. The surrounding plate 31 limits the upward position of the abutment plate 2 and covers the inner cavity 12. The surrounding plate 31 covers the inner cavity 12 to prevent the buffer solution in the inner cavity 12 from being stirred and splashed outward due to the swing of the connecting plate 14.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration damping mechanism for a Stirling refrigerator, characterized in that: Includes a base (1), an annular plate (11) is provided on the inner side of the base (1), an inner cavity (12) for accommodating buffer is provided in the annular plate (11), a connecting plate (14) is rotatably installed on the inner cavity (12), a bracket (3) for fixing the Stirling refrigerator is provided on the connecting plate (14), a spring (141) is fixed at the upper end of the connecting plate (14), and the other end of the spring (141) is connected to the bracket (3).

2. The vibration damping mechanism for a Stirling refrigerator as described in claim 1, characterized in that: There are multiple connecting plates (14), which are distributed around the card holder (3) below.

3. The vibration damping mechanism for a Stirling refrigerator as described in claim 1, characterized in that: The base (1) has an inwardly extending guide plate (13) on its side wall. A stop plate (2) that abuts against the outer side wall of the card seat (3) is attached to the guide plate (13). A second spring (21) is fixed on the side wall of the base (1). The other end of the second spring (21) is connected to the stop plate (2).

4. The vibration damping mechanism for a Stirling refrigerator as described in claim 3, characterized in that: The lower end face of the abutment plate (2) abuts against the upper end of the annular plate (11) and the guide plate (13).

5. The vibration damping mechanism for a Stirling refrigerator as described in claim 3, characterized in that: The connecting plate (14) and the abutment plate (2) are distributed in a one-to-one correspondence, and the moving directions of the corresponding connecting plate (14) and abutment plate (2) are arranged parallel to each other.

6. The vibration damping mechanism for a Stirling refrigerator as described in claim 3, characterized in that: The card holder (3) is provided with a surrounding plate (31) on its outer periphery, and the surrounding plate (31) is spaced above the abutment plate (2).

7. The vibration damping mechanism for a Stirling refrigerator as described in claim 6, characterized in that: The enclosure (31) is placed over the inner cavity (12).

8. The vibration damping mechanism for a Stirling refrigerator as described in claim 1, characterized in that: The card holder (3) is provided with a card strip (32) for attaching the Stirling refrigeration unit on its inner side.

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