Refrigeration damping device

Abstract

The utility model relates to the technical field of refrigeration equipment, in particular to a refrigeration damping device. The refrigeration damping device comprises an installation frame, a first vacuum assembly and a second vacuum assembly, the installation frame is used for installing a refrigerator body, the first vacuum assembly is located at the end, close to a cold head, of the installation frame and is in flexible vacuum connection with the installation frame and a reaction cabin, and the second vacuum assembly is located at the end, away from the cold head, of the installation frame. The second vacuum assembly is in flexible vacuum connection with the platform and the mounting frame, and the refrigerating machine has a first state in which the cold head, the refrigerating machine body and the platform are sequentially stacked from top to bottom and a second state in which the platform, the refrigerating machine body and the cold head are sequentially stacked from top to bottom. In the first state, the force applied to the mounting frame by the first vacuum assembly is larger than the force applied to the mounting frame by the second vacuum assembly, in the second state, the force applied to the mounting frame by the first vacuum assembly is smaller than the force applied to the mounting frame by the second vacuum assembly, and suspension vibration reduction between the refrigerating machine body and the platform is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a refrigeration vibration damping device. Background Art

[0002] A cryogenic refrigerator is a closed refrigeration device that provides cooling capacity and is used to rapidly cool the object to be cooled. However, due to the limitation of its working principle, the cryogenic refrigerator generates relatively large vibrations during operation.

[0003] Specifically, when the cryogenic refrigerator is used for the low-temperature performance test of test samples, the compression piston inside the cryogenic refrigerator performs a reciprocating linear motion. This motion process causes the cryogenic refrigerator to vibrate, thereby causing the test samples on the loading platform to vibrate. This vibration easily affects the test results of the test samples and makes the test results inaccurate.

[0004] Existing refrigeration vibration damping devices all set bellows at one end of the refrigerator body close to the cold head to achieve vibration damping of the refrigerator body. However, all existing refrigerator bodies need to be installed on a platform, and the refrigerator body is rigidly connected to the platform, lacking a corresponding vibration damping structure between the refrigerator body and the platform.

[0005] Therefore, it is urgent to invent a refrigeration vibration damping device to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a refrigeration vibration damping device to achieve vibration damping of the refrigerator body relative to the platform and improve the protection of the refrigerator body.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A refrigeration vibration damping device is used to damp the vibration of a refrigerator installed on a platform. The refrigerator includes a refrigerator body connected to a cold head, and the cold head is provided with a probe. The cold head and the probe are accommodated in a reaction chamber. The refrigeration vibration damping device includes:

[0009] A mounting frame for mounting the refrigerator body;

[0010] A first vacuum assembly located at one end of the mounting frame close to the cold head. The first vacuum assembly is flexibly vacuum-connected between the mounting frame and the reaction chamber;

[0011] A second vacuum assembly located at one end of the mounting frame away from the cold head. The second vacuum assembly is flexibly vacuum-connected between the mounting frame and the platform;

[0012] The refrigerator has a first state in which the cold head, the refrigerator main body, and the platform are stacked in sequence from top to bottom, and a second state in which the platform, the refrigerator main body, and the cold head are stacked in sequence from top to bottom;

[0013] In the first state, the force exerted on the mounting bracket by the first vacuum assembly is greater than the force exerted on the mounting bracket by the second vacuum assembly;

[0014] In the second state, the force exerted on the mounting bracket by the first vacuum assembly is less than the force exerted on the mounting bracket by the second vacuum assembly.

[0015] As an optional solution, the first vacuum assembly includes:

[0016] A first flange, fixedly connected to the mounting bracket;

[0017] A second flange, fixedly connected to the reaction chamber; and

[0018] A corrugated pipe, one end of the corrugated pipe is fixedly connected to the first flange, and the other end of the corrugated pipe is fixedly connected to the second flange.

[0019] As an optional solution, the first vacuum assembly further includes:

[0020] A bolt and a nut, the threaded portion of the bolt sequentially passes through the first flange and the mounting bracket and is threadedly fixed to the nut, and the threaded portion of the bolt sequentially passes through the second flange and the mounting portion of the reaction chamber and is threadedly fixed to the nut.

[0021] As an optional solution, taking one bolt and one nut as a set of connection structures, the first flange and the mounting bracket are connected and fixed by at least two sets of the connection structures, and the second flange and the reaction chamber are connected and fixed by at least two sets of the connection structures.

[0022] As an optional solution, the first vacuum assembly further includes:

[0023] Sealing rings, the sealing rings are respectively arranged between the first flange and the mounting bracket and between the second flange and the reaction chamber.

[0024] As an optional solution, the refrigeration and vibration damping device further includes:

[0025] A fixing frame, the fixing frame is respectively fixed to the platform and the reaction chamber, and the second vacuum assembly flexibly vacuum connects the fixing frame and the mounting bracket.

[0026] As an optional solution, the refrigeration and vibration damping device further includes:

[0027] The connecting rod extends in the up and down direction. One end of the connecting rod is fixedly opposed to the probe, and the other end of the connecting rod is fixedly opposed to the reaction chamber. An elastic member is provided on the connecting rod. The elastic member splits the connecting rod into two parts and connects the two parts together in the up and down direction. The elastic member can elastically deform in the up and down direction.

[0028] As an alternative, the refrigeration and vibration damping device further includes:

[0029] A flexible temperature guiding wire, one end of the flexible temperature guiding wire is connected to the cold head, and the other end of the flexible temperature guiding wire is connected to the probe.

[0030] As an alternative, the length of the flexible temperature guiding wire is greater than the distance between the cold head and the probe.

[0031] As an alternative, at least two of the connecting rods are provided on the refrigeration and vibration damping device, and all the connecting rods are circumferentially spaced around the outer periphery of the cold head with the cold head as the center.

[0032] Advantages of the present utility model:

[0033] For the refrigeration and vibration damping device provided by the present utility model, by mounting the main body of the refrigerator on the mounting frame and using the first vacuum assembly to flexibly connect the end of the mounting frame close to the cold head to the reaction chamber in a vacuum, a vacuum environment is provided for the cold head of the refrigerator to ensure the normal operation of the refrigerator. By using the second vacuum assembly to flexibly connect the platform to the mounting frame in a vacuum and according to the relative position relationship between the main body of the refrigerator, the cold head and the platform, when the cold head, the main body of the refrigerator and the platform are arranged in sequence from top to bottom, it is ensured that the force exerted on the mounting frame by the first vacuum assembly is greater than the force exerted on the mounting frame by the second vacuum assembly, and the mounting frame and the main body of the refrigerator inside the mounting frame can be suspended and fixed on the platform. The second vacuum assembly is used to absorb the vibration transmitted from the main body of the refrigerator to the platform. When the platform, the main body of the refrigerator and the cold head are arranged in sequence from top to bottom, it is ensured that the force exerted on the mounting frame by the first vacuum assembly is less than the force exerted on the mounting frame by the second vacuum assembly, and the mounting frame and the main body of the refrigerator inside the mounting frame can be suspended and fixed on the platform. The second vacuum assembly is used to absorb the vibration transmitted from the main body of the refrigerator to the platform, improving the protection of the main body of the refrigerator. Description of the drawings

[0034] Figure 1 is a schematic structural diagram of the refrigeration and vibration damping device, the refrigerator and the reaction chamber provided by the present utility model;

[0035] Figure 2 is a schematic cross-sectional view of the refrigeration and vibration damping device, the refrigerator and the reaction chamber provided by the present utility model;

[0036] Figure 3It is a schematic cross-sectional view of the first vacuum assembly, cold head, connecting rod, flexible temperature conducting wire and probe provided by an embodiment of the present utility model.

[0037] In the figure:

[0038] 1000, refrigeration and vibration damping device;

[0039] 100, first vacuum assembly; 200, second vacuum assembly; 300, mounting rack; 310, first top plate; 320, first bottom plate; 321, first avoidance opening; 330, first connecting plate; 400, fixing rack; 410, second top plate; 420, second bottom plate; 421, second avoidance opening; 430, second connecting plate; 500, connecting pipe; 600, connecting rod; 610, elastic member; 700, flexible temperature conducting wire;

[0040] 2000, refrigerator; 2100, refrigerator main body; 2200, cold head;

[0041] 3000, probe;

[0042] 4000, reaction chamber. Detailed implementation manners

[0043] In order to make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the drawings and through specific implementation manners.

[0044] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0045] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include that the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the top" and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the bottom" and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0046] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings. These are only for convenience of description and simplifying the operations, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0047] A cryogenic refrigerator is a closed refrigeration device that provides cooling capacity. It refrigerates by doing work on the gas, that is, operating in reverse, to achieve rapid cooling of the object to be cooled. Specifically, when the cryogenic refrigerator is used for the low-temperature performance test of a test article, the compression piston inside the cryogenic refrigerator performs reciprocating linear motion. This motion process causes the cryogenic refrigerator to vibrate, thereby causing the test article on the loading platform to vibrate. This vibration is likely to affect the test results of the test article and make the test results inaccurate. All existing refrigeration and vibration damping devices are provided with bellows at one end of the refrigerator body close to the cold head to achieve vibration damping of the refrigerator body. However, all existing refrigerator bodies need to be installed on a platform, and the refrigerator body is rigidly connected to the platform, and there is a lack of corresponding vibration damping structure between the refrigerator body and the platform.

[0048] To solve the above problems, as Figures 1 to 3 shown, this embodiment provides a refrigeration and vibration damping device 1000. The refrigeration and vibration damping device 1000 is used to damp the vibration of a cryogenic refrigerator 2000 installed at a platform. The cryogenic refrigerator 2000 includes a connected refrigerator body 2100 and a cold head 2200. The cold head 2200 is provided with a probe 3000, and the cold head 2200 and the probe 3000 are accommodated in a reaction chamber 4000.

[0049] Specifically, the refrigeration and vibration damping device 1000 includes a mounting frame 300, a first vacuum assembly 100, and a second vacuum assembly 200. Among them, the mounting frame 300 is used to mount the main body 2100 of the refrigerator. The first vacuum assembly 100 is located at one end of the mounting frame 300 close to the cold head 2200. The first vacuum assembly 100 is flexibly vacuum-connected to the main body 2100 of the refrigerator and the reaction chamber 4000. The second vacuum assembly 200 is located at the end of the mounting frame 300 away from the cold head 2200. The second vacuum assembly 200 is flexibly vacuum-connected to the platform and the mounting frame 300. The refrigerator 2000 has a first state in which the cold head 2200, the main body 2100 of the refrigerator, and the platform are stacked in sequence from top to bottom, and a second state in which the platform, the main body 2100 of the refrigerator, and the cold head 2200 are stacked in sequence from top to bottom. In the first state, the force exerted by the first vacuum assembly 100 on the mounting frame 300 is greater than the force exerted by the second vacuum assembly 200 on the mounting frame 300. In the second state, the force exerted by the first vacuum assembly 100 on the mounting frame 300 is less than the force exerted by the second vacuum assembly 200 on the mounting frame 300.

[0050] The refrigeration and vibration damping device 1000 provides a vacuum environment for the cold head 2200 of the refrigerator 2000 to ensure the normal operation of the refrigerator 2000 by mounting the main body 2100 of the refrigerator on the mounting frame 300 and using the first vacuum assembly 100 to flexibly vacuum-connect the end of the mounting frame 300 close to the cold head 2200 and the reaction chamber 4000. By using the second vacuum assembly 200 to flexibly vacuum-connect the platform and the mounting frame 300, and according to the relative position relationship between the main body 2100 of the refrigerator and the cold head 2200 and the platform, when the cold head 2200, the main body 2100 of the refrigerator, and the platform are arranged in sequence from top to bottom, it is ensured that the force exerted by the first vacuum assembly 100 on the mounting frame 300 is greater than the force exerted by the second vacuum assembly 200 on the mounting frame 300, and the mounting frame 300 and the main body 2100 of the refrigerator inside the mounting frame 300 can be suspended and fixed on the platform. The second vacuum assembly 200 is used to absorb the vibration transmitted from the main body 2100 of the refrigerator to the platform. When the platform, the main body 2100 of the refrigerator, and the cold head 2200 are arranged in sequence from top to bottom, it is ensured that the force exerted by the first vacuum assembly 100 on the mounting frame 300 is less than the force exerted by the second vacuum assembly 200 on the mounting frame 300, and the mounting frame 300 and the main body 2100 of the refrigerator inside the mounting frame 300 can be suspended and fixed on the platform. The second vacuum assembly 200 is used to absorb the vibration transmitted from the main body 2100 of the refrigerator to the platform, improving the protection of the main body 2100 of the refrigerator.

[0051] As an alternative, the first vacuum assembly 100 includes a first flange, a second flange, and a bellows. The first flange is fixedly connected to the mounting frame 300, the second flange is fixedly connected to the reaction chamber 4000, one end of the bellows is fixedly connected to the first flange, and the other end of the bellows is fixedly connected to the second flange. By fixedly connecting the first flange to the mounting frame 300 and the second flange to the reaction chamber 4000, and connecting the two ends of the bellows to the first flange and the second flange respectively, the flexible vacuum connection between the mounting frame 300 and the reaction chamber 4000 is realized by using the bellows. It should be noted that in other embodiments, the bellows can also be other elastic tubular structures, which are not specifically limited in this embodiment.

[0052] In this embodiment, the first vacuum assembly 100 further includes bolts and nuts. The threaded portion of the bolt sequentially passes through the first flange and the mounting frame 300 and is threadedly fixed to the nut, and the threaded portion of the bolt sequentially passes through the second flange and the mounting portion of the reaction chamber 4000 and is threadedly fixed to the nut. By using bolts and nuts to threadedly fix the first flange to the mounting frame 300 and the second flange to the reaction chamber 4000 respectively, not only the fixing effect is good, but also the disassembly and assembly are convenient, which is convenient for subsequent maintenance and repair.

[0053] In addition, taking one bolt and one nut as a set of connection structures, the first flange and the mounting frame 300 are fixedly connected through at least two sets of connection structures, and the second flange and the reaction chamber 4000 are fixedly connected through at least two sets of connection structures. By forming a set of connection structures with one bolt and one nut, and respectively using at least two sets of connection structures to threadedly fix the first flange to the mounting frame 300 and using at least two sets of connection structures to threadedly fix the second flange to the reaction chamber 4000, the fixing effect between the first flange and the mounting frame 300 and the fixing effect between the second flange and the reaction chamber 4000 can be ensured. It should be noted that in this embodiment, the first flange and the mounting frame 300 are fixed through four sets of connection structures, and the second flange and the reaction chamber 4000 are fixed through four sets of connection structures. In other embodiments, the number of connection structures between the first flange and the mounting frame 300 and the number of connection structures between the second flange and the reaction chamber 4000 can also be adjusted within the range of two sets or more according to actual needs, which are not specifically limited in this embodiment.

[0054] To further improve the flexible vacuum connection effect of the first vacuum assembly 100, the first vacuum assembly 100 further includes a sealing ring, wherein the sealing rings are respectively arranged between the first flange and the mounting bracket 300 and between the second flange and the reaction chamber 4000. By arranging the sealing rings between the first flange and the mounting bracket 300 and between the second flange and the reaction chamber 4000 respectively, the airtightness between the first flange and the mounting bracket 300 and the airtightness between the second flange and the reaction chamber 4000 can be ensured, thereby ensuring the flexible vacuum connection effect of the first vacuum assembly 100.

[0055] It should be noted that the specific structure of the second vacuum assembly 200 is the same as that of the first vacuum assembly 100. To ensure the conciseness of the text, it will not be elaborated here.

[0056] In this embodiment, the pressures inside the first vacuum assembly 100 and the second vacuum assembly 200 are equal. If the force exerted by the first vacuum assembly 100 on the mounting bracket 300 is greater than the force exerted by the second vacuum assembly 200 on the mounting bracket 300, the inner diameter of the bellows inside the first vacuum assembly 100 is greater than the inner diameter of the bellows inside the second vacuum assembly 200. If the force exerted by the first vacuum assembly 100 on the mounting bracket 300 is less than the force exerted by the second vacuum assembly 200 on the mounting bracket 300, the inner diameter of the bellows inside the first vacuum assembly 100 is less than the inner diameter of the bellows inside the second vacuum assembly 200.

[0057] As an alternative solution, to further ensure the equality of the pressures inside the first vacuum assembly 100 and the second vacuum assembly 200, the refrigeration and vibration damping device 1000 further includes a connecting pipe 500. One end of the connecting pipe 500 is in communication with the inside of the first vacuum assembly 100, and the other end of the connecting pipe 500 is in communication with the inside of the second vacuum assembly 200. When the first vacuum assembly 100 and the second vacuum assembly 200 are evacuated, under the conduction of the connecting pipe 500, the first vacuum assembly 100 and the second vacuum assembly 200 can be evacuated synchronously.

[0058] In other embodiments, the connecting pipe 500 may not be provided, and the first vacuum assembly 100 and the second vacuum assembly 200 may be evacuated separately. Pressure gauges are respectively arranged at the first vacuum assembly 100 and the second vacuum assembly 200, and the pressure gauges are used to detect the pressures inside the first vacuum assembly 100 and the second vacuum assembly 200 respectively to ensure that the pressures inside the first vacuum assembly 100 and the second vacuum assembly 200 are equal.

[0059] As an alternative solution, such as Figure 2 and Figure 3As described above, for further facilitating the disassembly and assembly of the second vacuum assembly 200 and the platform, the refrigeration and vibration damping device 1000 further includes a fixing frame 400. The fixing frame 400 is fixed to the platform and the reaction chamber 4000 respectively, and the second vacuum assembly 200 is flexibly vacuum-connected to fix the frame 400 and the mounting frame 300.

[0060] Specifically, the mounting frame 300 includes a first top plate 310, a first bottom plate 320 and a first connecting plate 330. There is a gap between the first top plate 310 and the first bottom plate 320. The first connecting plate 330 is used to connect and fix the first top plate 310 and the first bottom plate 320. The main body 2100 of the refrigerator is fixed between the first top plate 310 and the first bottom plate 320. The fixing frame 400 includes a second top plate 410, a second bottom plate 420 and a second connecting plate 430. There is a gap between the second top plate 410 and the second bottom plate 420. The second connecting plate 430 is used to connect and fix the second top plate 410 and the second bottom plate 420. The mounting frame 300 is arranged between the second top plate 410 and the second bottom plate 420. The two ends of the second vacuum assembly 200 are respectively connected and fixed to the upper end surface of the first top plate 310 and the lower end surface of the second top plate 410. The reaction chamber 4000 is fixed to the lower end surface of the second bottom plate 420. A first avoidance opening 321 is formed on the first bottom plate 320, and a second avoidance opening 421 is formed on the second bottom plate 420. The two ends of the first vacuum assembly 100 are respectively flexibly connected to the upper end surface of the first bottom plate 320 and the lower end surface of the second bottom plate 420 to flexibly vacuum-connect the first avoidance opening 321 and the second avoidance opening 421.

[0061] In an alternative embodiment, as Figure 3 shown, the refrigeration and vibration damping device 1000 further includes a connecting rod 600. The connecting rod 600 extends in the vertical direction. One end of the connecting rod 600 is relatively fixed to the probe 3000, and the other end of the connecting rod 600 is relatively fixed to the second bottom plate 420. An elastic member 610 is arranged on the connecting rod 600. The elastic member 610 splits the connecting rod 600 into two parts and connects the two parts together in the vertical direction. The elastic member 610 can generate elastic deformation in the vertical direction. By connecting the two ends of the connecting rod 600 extending in the vertical direction to the probe 3000 and the first mounting frame 300 respectively, the elastic member 610 that can generate deformation in the vertical direction splits the connecting rod 600 into two sections, and the elastic member 610 connects the two sections of the connecting rod 600 together in the vertical direction, which can further absorb the vibration of the main body 2100 of the refrigerator and improve the vibration damping effect. It should be noted that in this embodiment, the elastic member 610 is a spring. The spring has a simple structure and is convenient for disassembly and assembly. In other embodiments, the elastic member 610 can also be a rubber block, a corrugated pipe or other elastic structures, and this embodiment does not make specific limitations.

[0062] To further improve the vibration damping effect of the connecting rod 600 on the probe 3000, the refrigeration vibration damping device 1000 is provided with at least two connecting rods 600, and all the connecting rods 600 are circumferentially spaced on the outer periphery of the cold head 2200 with the cold head 2200 as the center. It should be noted that, in this embodiment, the refrigeration vibration damping device 1000 is provided with two connecting rods 600, and the two connecting rods 600 are circumferentially spaced on the outer periphery of the cold head 2200 with the cold head 2200 as the center. In other embodiments, the specific number of the connecting rods 600 can also be adjusted within the range of two and more according to actual needs, and no specific limitation is made in this embodiment.

[0063] In this embodiment, the refrigeration vibration damping device 1000 further includes a flexible temperature guiding wire 700. Among them, one end of the flexible temperature guiding wire 700 is connected to the cold head 2200, and the other end of the flexible temperature guiding wire 700 is connected to the probe 3000. By connecting the cold head 2200 and the probe 3000 with the flexible temperature guiding wire 700, the refrigeration of the probe 3000 is realized.

[0064] Furthermore, the length of the flexible temperature guiding wire 700 is greater than the distance between the cold head 2200 and the probe 3000. By limiting the length of the flexible temperature guiding wire 700 to be greater than the distance between the probe 3000 and the cold head 2200, it is possible to prevent the flexible temperature guiding wire 700 from being tensioned by the probe 3000 and the cold head 2200, and avoid the vibration of the cold head 2200 being transmitted to the probe 3000 along the flexible temperature guiding wire 700. In addition, the mass of the flexible temperature guiding wire 700 is much smaller than the mass of the probe 3000 to further reduce the vibration transmission effect of the flexible temperature guiding wire 700. It should be noted that, in this embodiment, the flexible temperature guiding wire 700 is a gold wire. Gold has good thermal conductivity. In other embodiments, the flexible temperature guiding wire 700 can also be a silver wire, a copper wire or other metal wires with heat conduction functions, and no specific limitation is made in this embodiment.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A refrigeration vibration reduction device, characterized in that: Used to reduce vibration of a refrigerator (2000) installed on a platform, the refrigerator comprising a refrigerator body (2100) and a cold head (2200) connected to each other, the cold head (2200) being provided with a probe (3000), the cold head (2200) and the probe (3000) being accommodated in a reaction chamber (4000), the refrigeration vibration reduction device comprising: A mounting frame (300) for mounting the refrigerator body (2100); A first vacuum component (100) is located at one end of the mounting frame (300) close to the cold head (2200), and the first vacuum component (100) flexibly vacuum connects the mounting frame (300) and the reaction chamber (4000); A second vacuum component (200) is located at one end of the mounting frame (300) away from the cold head (2200), and the second vacuum component (200) flexibly vacuum connects the mounting frame (300) and the platform; The refrigerator (2000) has a first state in which the cold head (2200), the refrigerator body (2100) and the platform are stacked in sequence from top to bottom, and a second state in which the platform, the refrigerator body (2100) and the cold head (2200) are stacked in sequence from top to bottom; In the first state, the force applied by the first vacuum component (100) to the mounting frame (300) is greater than the force applied by the second vacuum component (200) to the mounting frame (300); In the second state, the force applied by the first vacuum assembly (100) to the mounting frame (300) is smaller than the force applied by the second vacuum assembly (200) to the mounting frame (300).

2. The refrigeration vibration reduction device according to claim 1, characterized in that: The first vacuum assembly (100) comprises: A first flange connected and fixed to the mounting frame (300); A second flange is connected and fixed to the reaction chamber (4000); and A bellows, one end of the bellows is connected and fixed to the first flange, and the other end of the bellows is connected and fixed to the second flange.

3. The refrigeration vibration reduction device according to claim 2, characterized in that: The first vacuum assembly (100) further comprises: Bolts and nuts, wherein the threaded portion of the bolt is sequentially passed through the first flange and the mounting frame (300) and then threadedly fixed to the nut, and the threaded portion of the bolt is sequentially passed through the second flange and the mounting portion of the reaction chamber (4000) and then threadedly fixed to the nut.

4. The refrigeration vibration reduction device according to claim 3, characterized in that: With one bolt and one nut forming a set of connection structures, the first flange and the mounting frame (300) are connected and fixed via at least two sets of the connection structures, and the second flange and the reaction chamber (4000) are connected and fixed via at least two sets of the connection structures.

5. The refrigeration vibration reduction device according to claim 2, characterized in that: The first vacuum assembly (100) further comprises: A sealing ring is respectively arranged between the first flange and the mounting frame (300) and between the second flange and the reaction chamber (4000).

6. The refrigeration vibration reduction device according to claim 1, characterized in that: The refrigeration vibration reduction device also includes: A fixing frame (400), wherein the fixing frame (400) is respectively fixed to the platform and the reaction chamber (4000), and the second vacuum component (200) flexibly vacuum connects the fixing frame (400) and the mounting frame (300).

7. The refrigeration vibration reduction device according to claim 1, characterized in that: The refrigeration vibration reduction device also includes: The connecting rod (600) extends in the up-down direction, one end of the connecting rod (600) is relatively fixed to the probe (3000), and the other end of the connecting rod (600) is relatively fixed to the reaction chamber (4000). An elastic member (610) is provided on the connecting rod (600), and the elastic member (610) splits the connecting rod (600) into two parts and connects the two parts together in the up-down direction. The elastic member (610) can generate elastic deformation in the up-down direction.

8. The refrigeration vibration reduction device according to claim 7, characterized in that: The refrigeration vibration reduction device also includes: A flexible temperature conductive wire (700), one end of the flexible temperature conductive wire (700) is connected to the cold head (2200), and the other end of the flexible temperature conductive wire (700) is connected to the probe (3000).

9. The refrigeration vibration reduction device according to claim 8, characterized in that: The length of the flexible temperature conductive wire (700) is greater than the distance between the cold head (2200) and the probe (3000).

10. The refrigeration vibration reduction device according to claim 7, characterized in that: The refrigeration vibration reduction device is provided with at least two connecting rods (600), and all the connecting rods (600) are arranged at intervals in the circumferential direction on the outer periphery of the cold head (2200) with the cold head (2200) as the center.

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