Damping device, refrigerating machine assembly and refrigerating system

Abstract

The invention discloses a damping device, a refrigerating machine assembly and a refrigerating system, and relates to the technical field of refrigerating system structures.The damping device is used for being connected between a machine head and a Dewar of a refrigerating machine, the damping device comprises a first damping structure and a second damping structure, the first damping structure comprises a mounting structure and a first elastic piece, and the second damping structure comprises a second elastic piece; the installation structure is used for being installed on the Dewar. One end of the first elastic piece is installed on the installation structure. The second vibration reduction structure comprises a second elastic piece, the second elastic piece and the first elastic piece are oppositely arranged in the first direction in a spaced mode, and one end of the second elastic piece is used for being installed on the Dewar; wherein the other end of the first elastic piece is used for being connected with one end, in the first direction, of the machine head, and the other end of the second elastic piece is used for being connected with the other end, in the first direction, of the machine head. The invention aims to solve the problem of operation vibration when a low-temperature system is built for an existing refrigerator.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration system structures, and in particular to a vibration reduction device, a refrigerator component and a refrigeration system. Background Art

[0002] In recent years, with the rapid development of science and technology, in-depth development and comprehensive innovation have continued in advanced technical fields such as cryogenic optics, deep space exploration, and quantum communication. This has put forward an increasingly urgent demand for cryogenic refrigerators that can effectively work in extremely low temperature zones of 4K (referring to the 4 Kelvin temperature region under the Kelvin temperature, that is, the temperature range of 4 Kelvin (K), equivalent to -269.15 degrees Celsius) and below.

[0003] In the extremely low temperature zone of 4K and below, various types of composite refrigerators are widely used in the construction of cryogenic systems due to their unique performance advantages of efficient refrigeration, precise temperature control and high stability. However, limited by the working principle of the refrigerator itself, it will inevitably produce large vibrations during operation. This vibration is mainly caused by the mechanical movement inside the refrigerator and the interaction with the external environment. In the actual application of the extremely low temperature zone of 4K and below, this vibration will have a great impact on the performance and stability of the cryogenic system. For example, it may cause temperature fluctuations of samples, reduce measurement accuracy, and even affect the normal operation of some precision instruments. Especially in some industries and fields that are sensitive to vibration, such as aerospace, precision instruments, etc., the importance of vibration reduction devices is more prominent. Therefore, when building related high-precision cryogenic vacuum systems based on refrigerators, it is necessary to fully consider the impact of vibration reduction problems to solve this shortcoming. Summary of the invention

[0004] The main purpose of the present invention is to provide a vibration reduction device, a refrigerator assembly and a refrigeration system, aiming to improve the operation vibration problem of the existing refrigerator when building a low-temperature system.

[0005] To achieve the above object, the present invention provides a vibration reduction device, which is used to be connected between the head of the refrigerator and the Dewar, wherein the vibration reduction device comprises: A first vibration reduction structure comprises a mounting structure and a first elastic member, wherein the mounting structure is used to be mounted on the dewar, and one end of the first elastic member is mounted on the mounting structure; and A second vibration reduction structure comprises a second elastic member, wherein the second elastic member is arranged opposite to and spaced from the first elastic member in a first direction, and one end of the second elastic member is mounted to the dewar; Wherein, the other end of the first elastic member is used to connect to one end of the head in the first direction, and the other end of the second elastic member is used to connect to the other end of the head in the first direction.

[0006] In one embodiment, the first elastic member is used to apply a force on the handpiece in a direction away from the second elastic member, and the second elastic member is used to apply a force on the handpiece in a direction away from the first elastic member.

[0007] In one embodiment, at least one of the first elastic member and the second elastic member is configured as a bellows, one end of the bellows is used to connect to the machine head, and the other end is a fixed end for mounting to the mounting structure or the Dewar, and the inner cavity pressure of the bellows is less than atmospheric pressure.

[0008] In one embodiment, the first elastic member is configured as a first bellows, the second elastic member is configured as a second bellows, and the inner cavity pressure of the first bellows is equivalent to the inner cavity pressure of the second bellows.

[0009] In one embodiment, the first bellows and the second bellows are used to communicate with the vacuum chamber of the Dewar.

[0010] In one embodiment, the second bellows is installed to an opening at one end of the Dewar to communicate with the vacuum chamber of the Dewar.

[0011] In one embodiment, the second bellows is used to be sleeved on the cold head of the machine head.

[0012] In one embodiment, the first bellows and the second bellows are coaxially disposed with the cold head.

[0013] In one embodiment, the vibration reduction device further comprises a vacuum tube, one end of which extends to the mounting structure and is connected to one end of the first bellows, and the other end of which is used to connect to the vacuum chamber of the Dewar.

[0014] In one embodiment, the first direction is the up-down direction, and the first bellows is located above the second bellows, and the diameter of the first bellows is greater than the diameter of the second bellows.

[0015] In one embodiment, the vibration reduction device also includes a support structure, which is used to be arranged between the mounting structure and the Dewar, and the support structure is used to install the machine head, and the first elastic member and the second elastic member are correspondingly installed to the two ends of the support structure in the first direction.

[0016] The present invention further provides a refrigerator assembly, wherein the refrigerator assembly comprises: nose; and, A vibration damping device, the vibration damping device includes a first vibration damping structure and a second vibration damping structure, the first vibration damping structure includes a mounting structure and a first elastic member, the mounting structure is mounted on the dewar, and one end of the first elastic member is mounted on the mounting structure; the second vibration damping structure includes a second elastic member, the second elastic member is used to be arranged opposite to and spaced from the first elastic member in a first direction, and one end of the second elastic member is used to be mounted to the dewar; wherein, the other end of the first elastic member is used to connect to one end of the machine head in the first direction, and the other end of the second elastic member is used to connect to the other end of the machine head in the first direction, and the first elastic member and the second elastic member are mounted to the machine head to elastically support the machine head.

[0017] The present invention also proposes a refrigeration system, wherein the refrigeration system includes a dewar and a refrigerator assembly, wherein a working chamber and a vacuum chamber located outside the working chamber are formed in the dewar; the refrigerator assembly includes a head and a vibration reduction device, wherein the vibration reduction device includes a first vibration reduction structure and a second vibration reduction structure, wherein the first vibration reduction structure includes a mounting structure and a first elastic member, wherein the mounting structure is used to be mounted on the dewar, and one end of the first elastic member is mounted on the mounting structure; the second vibration reduction structure includes a second elastic member, wherein the second elastic member is used to be arranged opposite to and spaced from the first elastic member in a first direction, and one end of the second elastic member is used to be mounted on the dewar; wherein the other end of the first elastic member is used to connect to one end of the head in the first direction, and the other end of the second elastic member is used to connect to the other end of the head in the first direction, the first elastic member and the second elastic member are mounted to the head to elastically support the head, the vibration reduction device is mounted on the dewar, and the head is mounted on the vibration reduction device, and its cold head extends into the working chamber.

[0018] In the technical solution of the present invention, the dewar is mainly used to build a vacuum environment, and the head of the refrigerator needs to extend into the working chamber of the dewar to cool the working chamber so that it meets the required vacuum and low-temperature working environment. The above refrigeration system is mainly used in a precision production environment, so on the one hand, it is necessary to control the inevitable vibration caused by the working process of the refrigerator itself, and on the other hand, it is necessary to control the pressure fluctuation when maintaining the vacuum environment in the dewar, which causes the pressure difference between it and the external environment, thereby causing the head of the refrigerator to be subjected to the vibration caused by the pressure fluctuation. Based on this, the present application is provided with the vibration reduction device between the head of the refrigerator and the dewar. Specifically, the vibration reduction device mainly includes the first elastic member and the second elastic member respectively arranged at the two ends of the head of the refrigerator, so as to provide elastic vibration reduction force to the two ends of the head of the refrigerator, which can greatly reduce the vibration amplitude of the head of the refrigerator based on the above two situations, so as to achieve the desired purpose of improving the vibration problem of the above refrigeration system operation and meet the needs of precision operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A simplified structural diagram of an embodiment of a refrigeration system provided by the present invention.

[0021] Description of Figure Numbers: 1000, refrigeration system; 100, refrigerator assembly; 1, machine head; 11, cold head; 2, vibration reduction device; 21, mounting structure; 22, first elastic member; 22a, first bellows; 23, second elastic member; 23a, second bellows; 24, supporting structure; 25, vacuum tube; 200, Dewar; 201, vacuum chamber; 202, working chamber.

[0022] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] In recent years, with the rapid development of science and technology, in-depth development and comprehensive innovation have continued in advanced technical fields such as cryogenic optics, deep space exploration, and quantum communication. This has put forward an increasingly urgent demand for cryogenic refrigerators that can effectively work in extremely low temperature zones of 4K (referring to the 4 Kelvin temperature region under the Kelvin temperature, that is, the temperature range of 4 Kelvin (K), equivalent to -269.15 degrees Celsius) and below.

[0027] In the extremely low temperature zone of 4K and below, various types of composite refrigerators are widely used in the construction of cryogenic systems due to their unique performance advantages of efficient refrigeration, precise temperature control and high stability. However, limited by the working principle of the refrigerator itself, it will inevitably produce large vibrations during operation. This vibration is mainly caused by the mechanical movement inside the refrigerator and the interaction with the external environment. In the actual application of the extremely low temperature zone of 4K and below, this vibration will have a great impact on the performance and stability of the cryogenic system. For example, it may cause temperature fluctuations of samples, reduce measurement accuracy, and even affect the normal operation of some precision instruments. Especially in some industries and fields that are sensitive to vibration, such as aerospace, precision instruments, etc., the importance of vibration reduction devices is more prominent. Therefore, when building related high-precision cryogenic vacuum systems based on refrigerators, it is necessary to fully consider the impact of vibration reduction problems to solve this shortcoming.

[0028] In view of this, the present invention proposes a vibration reduction device, please refer to Figure 1, is an embodiment of the vibration reduction device proposed in this application, and the vibration reduction device will be described in detail below in conjunction with specific drawings.

[0029] See also Figure 1 , the vibration damping device 2 is used to be connected between the head 1 of the refrigerator and the dewar 200, wherein the vibration damping device 2 includes a first vibration damping structure and a second vibration damping structure, the first vibration damping structure includes a mounting structure 21 and a first elastic member 22, the mounting structure 21 is used to be mounted on the dewar 200, and one end of the first elastic member 22 is mounted on the mounting structure 21; the second vibration damping structure includes a second elastic member 23, the second elastic member 23 is used to be opposite to and spaced from the first elastic member 22 in the first direction, and one end of the second elastic member 23 is used to be mounted on the dewar 200; wherein the other end of the first elastic member 22 is used to connect to one end of the head 1 in the first direction, and the other end of the second elastic member 23 is used to connect to the other end of the head 1 in the first direction.

[0030] In the technical solution of the present invention, the Dewar 200 is mainly used to build a vacuum environment, and the head 1 of the refrigerator needs to extend into the working chamber 202 of the Dewar 200 to cool the working chamber 202 so that it meets the required vacuum and low-temperature working environment. The above refrigeration system 1000 is mainly used in a precision production environment, so on the one hand, it is necessary to control the inevitable vibration caused by the working process of the refrigerator itself, and on the other hand, it is necessary to control the pressure fluctuation when maintaining the vacuum environment in the Dewar 200, resulting in a pressure difference between it and the external environment, thereby causing the head 1 of the refrigerator to be subjected to the vibration caused by the pressure fluctuation. Based on this, the present application arranges the vibration damping device 2 between the head 1 of the refrigerator and the dewar 200. Specifically, the vibration damping device 2 mainly includes the first elastic member 22 and the second elastic member 23 respectively arranged at the two ends of the head 1 of the refrigerator to provide elastic vibration damping force to the two ends of the head 1 of the refrigerator, which can greatly reduce the vibration amplitude of the head 1 of the refrigerator based on the above two situations, so as to achieve the desired purpose of improving the vibration problem of the above refrigeration system 1000 operation and meet the requirements of precision operation.

[0031] Specifically, the first elastic member 22 is used to apply a force on the head 1 in a direction away from the second elastic member 23, and the second elastic member 23 is used to apply a force on the head 1 away from the first elastic member 22. The first elastic member 22 and the second elastic member 23 are mainly used to elastically support the head 1 of the refrigerator, that is, to suspend the head 1 of the refrigerator to provide a good vibration reduction effect. It can be understood that a cold head 11 is provided at the end of the head 1 of the refrigerator, and generally the cold head 11 extends into the dewar 200 along its axial direction, so it is mainly the axial vibration that affects the operating environment in the dewar 200. Therefore, in this application, the first direction is set to the axial direction of the head 1 of the refrigerator, and the first elastic member 22 and the second elastic member 23 are at both ends of the axial direction of the head 1 of the refrigerator, so as to mainly provide axial vibration reduction for the head 1 of the refrigerator to meet the functional requirements. On this basis, the elastic force of the first elastic member 22 and the second elastic member 23 is along the axial direction of the head 1 of the refrigerator, but the specific direction in which the elastic force is provided by the two is not limited, and it can meet the needs of suspending the head 1 and providing a stable vibration reduction effect, that is, it can be a thrust force toward the head 1 of the refrigerator, or a traction force away from the head 1 of the refrigerator, or it can be no force when stationary, and a force in the opposite direction of vibration is dynamically applied when the head 1 of the refrigerator vibrates, etc. In combination with the specific stress state of the head 1 of the refrigerator, the elastic force application direction of the first elastic member 22 and the second elastic member 23 can be reasonably selected. For example, when the first direction is a vertical direction, the self-gravity of the head 1 of the refrigerator needs to be considered. At this time, the elastic member located above can provide an elastic traction force equal to the gravity, and the elastic member located below it can remain in a stationary state without applying force to keep the head 1 of the refrigerator suspended and meet the dynamic vibration reduction requirements. In other states, the same consideration method is used to finally meet the need to suspend the head 1 of the refrigerator, and the vibration reduction requirements proposed in this application can be achieved. In this embodiment, the elastic force applied by the first elastic member 22 and the second elastic member 23 is set as a traction force, that is, the first elastic member 22 is used to apply a force on the head 1 away from the second elastic member 23, and the second elastic member 23 is used to apply a force on the head 1 away from the first elastic member 22, so as to achieve the above-mentioned suspension vibration reduction effect on the head 1 on the one hand, and on the other hand, the traction force of the first elastic member 22 and the second elastic member 23 that deviates from each other along the first direction can also be used to pull the head 1 of the refrigerator to maintain vibration in the first direction, avoid its lateral movement, and further improve the stability of the head 1 of the refrigerator.

[0032] Specifically, at least one of the first elastic member 22 and the second elastic member 23 is configured as a bellows, one end of the bellows is used to connect to the head 1, and the other end is a fixed end for mounting to the mounting structure 21 or the dewar 200, and the inner cavity pressure of the bellows is less than the atmospheric pressure. The specific structural form of the first elastic member 22 and the second elastic member 23 is not limited, and the elastic force requirement mentioned above can be met, for example, it can be an elastic structure such as a spring that can provide elastic force. In this embodiment, at least one of the first elastic member 22 and the second elastic member 23 is configured as the bellows, and the inner cavity pressure of the bellows is set to be less than the atmospheric pressure, so that the bellows is compressed by the atmospheric pressure. Combined with the structural characteristics of the bellows itself, that is, its expansion direction is along its axial direction, the bellows compressed by the atmospheric pressure can give the head 1 of the refrigerator a traction force along the first direction, meeting the functional requirements, and according to the structure of the bellows, the lateral movement of the head 1 of the refrigerator in the first direction is further restricted.

[0033] Specifically, the first elastic member 22 is set as a first bellows 22a, and the second elastic member 23 is set as a second bellows 23a. The inner cavity pressure of the first bellows 22a is equivalent to the inner cavity pressure of the second bellows 23a. The first elastic member 22 and the second elastic member 23 can both be set as the bellows, which has been described above. In this embodiment, the first elastic member 22 is set as the first bellows 22a, and the second elastic member 23 is set as the second bellows 23a. In addition to the functions described above, in this embodiment, the inner cavity pressures of the first bellows 22a and the second bellows 23a are set to be equivalent, so that the pressure difference between the inner cavities of the two bellows and the external atmospheric pressure is equivalent, so as to control the structural variables of the first bellows 22a and the second bellows 23a, and then control the elastic force of the two, thereby controlling the suspension position of the head 1 of the refrigerator, so that the state of the refrigeration system 1000 is easier to control. In addition, the inner cavity pressures of the first bellows 22a and the second bellows 23a are set to be equal, which also facilitates the simultaneous vacuuming of the two by the same vacuum device. Of course, in some cases, the inner cavity pressures of the first bellows 22a and the second bellows 23a can also be set to be different. In this case, two vacuuming devices can be used to perform separate operations, which can also meet the vibration reduction effect required by the present application, but it is obvious that the structural cost is high, the operation is cumbersome, and it is not practical.

[0034] Furthermore, the Dewar 200 itself needs to be evacuated to ensure the vacuum degree inside it and meet the operation requirements. Therefore, in this embodiment, the first bellows 22a and the second bellows 23a are used to communicate with the vacuum chamber 201 of the Dewar 200. In this way, the evacuation operation of the inner chambers of the first bellows 22a and the second bellows 23a does not require additional vacuum equipment, which reduces costs while ensuring that the pressures of the inner chambers of the first bellows 22a and the second bellows 23a are consistent, meeting the above requirements. Based on this, it should be noted that the manner in which the first bellows 22a and the second bellows 23a communicate with the vacuum chamber 201 of the Dewar 200 is not limited, as long as the inner cavities of the two bellows 23a can be communicated with the vacuum chamber 201. In this embodiment, since one end of the second bellows 23a is installed on the Dewar 200, it can be directly installed to an opening at one end of the Dewar 200 so that it is communicated with the vacuum chamber 201 of the Dewar 200, thereby eliminating the need to set up an additional pipeline structure, thereby reducing costs. The first bellows 22a does not contact the Dewar 200. Therefore, a through hole connected to the inner cavity of the first bellows 22a is opened on the mounting structure 21 corresponding to the position of the first bellows 22a, and the first bellows 22a is connected to the vacuum cavity 201 of the Dewar 200 by connecting the through hole and the vacuum cavity 201 of the Dewar 200 through a vacuum tube 25. It can be understood here that the vacuum tube 25 can also be directly connected to the first bellows 22a without opening the through hole on the mounting structure 21. The specific requirements are mainly based on actual needs, and it is sufficient to meet the requirements that the vacuum tube 25 is connected to the inner cavity of the first bellows 22a.

[0035] Specifically, the second bellows 23a is used to be sleeved on the cold head 11 of the machine head 1. It can be understood that the cold head 11 of the machine head 1 needs to extend into the dewar 200, and on the one hand, the cold head 11 of the machine head 1 cannot be in direct contact with the dewar 200 to avoid vibration contact conduction, and on the other hand, the gap between the cold head 11 of the machine head 1 and the dewar 200 needs to be sealed to ensure the vacuum degree in the dewar 200. Therefore, it is necessary to set a flexible connection structure that can resist the pressure caused by the atmospheric pressure difference between the cold head 11 of the machine head 1 and the dewar 200 to seal and avoid vibration conduction. The bellows structure sleeved on the cold head 11 of the machine head 1 is generally used in the art to meet the above requirements. The bellows structure is also used in this embodiment to solve this problem. Based on the structure that the second elastic member 23 is set as the second bellows 23a, the second bellows 23a is directly sleeved on the cold head 11 of the machine head 1 in this embodiment to meet the above requirements.

[0036] Specifically, the first bellows 22a and the second bellows 23a are coaxially arranged with the cold head 11. The vibration of the cold head 11 of the machine head 1 mainly along its axial direction has been explained in detail above, and will not be repeated here. The force axis of the first bellows 22a and the second bellows 23a that provide the cold head 11 of the machine head 1 with elastic traction needs to coincide with the vibration axis of the cold head 11 of the machine head 1 to ensure the stability of the operation of the overall refrigeration system 1000. When only one of the first bellows 22a and the second bellows 23a is provided, the first bellows 22a and the second bellows 23a need to be The bellows 23a and the cold head 11 are coaxially arranged, and when the number of the first bellows 22a is more than one, it is necessary to arrange the plurality of the first bellows 22a in a circumferential arrangement around the axis of the cold head 11 so that the central axis thereof coincides with the axis of the cold head 11. Similarly, when the number of the second bellows 23a is more than one, it is also necessary to arrange the plurality of the second bellows 23a in a circumferential arrangement around the axis of the cold head 11 so that the central axis thereof coincides with the axis of the cold head 11 to meet the above stability requirements. Specifically, it can be understood that, on the basis of meeting the main function of buffering and vibration reduction, the fewer the number of the first bellows 22a and the second bellows 23a, the easier it is to arrange them, and the lower the cost. Therefore, in this embodiment, the first bellows 22a and the second bellows 23a are arranged as one, and both are arranged to be coaxial with the cold head 11 to meet the above requirements.

[0037] In addition, the first direction is the up-down direction, and the first bellows 22a is located above the second bellows 23a, so the diameter of the first bellows 22a is greater than the diameter of the second bellows 23a. It can be understood that the specific use scenario of the refrigeration system 1000 may not be limited, wherein the orientation of the first direction may not be limited, and it is only necessary to introduce the corresponding gravity of the machine head 1 when setting the elastic traction of the first bellows 22a and the second bellows 23a to at least satisfy the balance of the three. For example, when the first direction is horizontal, the gravity of the machine head 1 does not affect its axial vibration, so the first bellows 22a and the second bellows 23a are set to be consistent to provide the same elastic traction force, and when the first direction is up and down, the gravity of the machine head 1 and the elastic traction force given by the second bellows 23a are in the same direction, then the elastic traction force given by the first bellows 22a needs to be equal to the combined force of the gravity of the machine head 1 and the elastic traction force given by the second bellows 23a. Based on the fact that the air pressure in the first bellows 22a and the second bellows 23a is the same, the atmospheric pressure they are subjected to is the same. Combined with the pressure formula P=F / S, where P represents pressure, F represents pressure, and S represents the force-bearing area, at atmospheric pressure In the calculation of force, it represents the atmospheric pressure per unit area, from which it can be calculated that when the first direction is the up and down direction and the first bellows 22a is located above the second bellows 23a, the elastic traction force given by the second bellows 23a needs to be greater than the elastic traction force given by the first bellows 22a, that is, the pressure exerted on the first bellows 22a needs to be greater than the pressure exerted on the second bellows 23a. On the premise that the above pressures remain consistent, the diameter of the first bellows 22a needs to be greater than the diameter of the second bellows 23a to meet the above force balance requirement. The specific diameter difference between the first bellows 22a and the second bellows 23a can be adjusted according to actual structural parameters to also meet the above force balance requirement.

[0038] In addition, the vibration reduction device 2 also includes a support structure 24, which is used to be arranged between the mounting structure 21 and the dewar 200, and the support structure 24 is used to install the machine head 1, and the first elastic member 22 and the second elastic member 23 are correspondingly installed to the two ends of the support structure 24 in the first direction. It can be understood that the first elastic member 22 and the second elastic member 23 can be directly installed on the machine head 1, but the machine head 1 is generally a mature product structure, and there is no fixed point corresponding to the first elastic member 22 and the second elastic member 23 in the present application. It is relatively cumbersome to fix the first elastic member 22 and the second elastic member 23 thereon, and there are problems of unstable fixing and poor sealing performance. Therefore, in this embodiment, the vibration reduction device 2 is also provided with the support structure 24, so that the support structure 24 is used to install and fix the machine head 1, so that the first elastic member 22 and the second elastic member 23 are directly and sealedly connected to the support structure 24, which is convenient for structural setting and has strong connection stability and good sealing performance.

[0039] The present invention also proposes a refrigerator assembly 100, which includes a head 1 and a vibration reduction device 2. The specific structure of the vibration reduction device 2 refers to the above embodiment. Since the refrigerator assembly 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0040] The present invention also proposes a refrigeration system 1000, which includes a dewar 200 and a refrigerator assembly 100. The specific structure of the refrigerator assembly 100 refers to the above embodiment. Since the refrigeration system 1000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Specifically, a working chamber 202 and a vacuum chamber 201 located outside the working chamber 202 are formed in the dewar 200; the vibration reduction device 2 is installed on the dewar 200, the head 1 is installed on the vibration reduction device 2, and its cold head 11 is extended into the working chamber 202.

[0041] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vibration reduction device, used to be connected between the head and the dewar of a refrigerator, characterized in that: include: A first vibration reduction structure, comprising a mounting structure and a first elastic member, wherein the mounting structure is used to be mounted on the dewar, and one end of the first elastic member is mounted on the mounting structure; as well as, A second vibration reduction structure comprises a second elastic member, wherein the second elastic member is arranged opposite to and spaced from the first elastic member in a first direction, and one end of the second elastic member is mounted to the dewar; Wherein, the other end of the first elastic member is used to connect to one end of the head in the first direction, and the other end of the second elastic member is used to connect to the other end of the head in the first direction.

2. The vibration reduction device according to claim 1, characterized in that: The first elastic member is used to apply a force on the handpiece in a direction away from the second elastic member, and the second elastic member is used to apply a force on the handpiece in a direction away from the first elastic member.

3. The vibration reduction device according to claim 2, characterized in that: At least one of the first elastic member and the second elastic member is configured as a bellows, one end of the bellows is connected to the machine head, and the other end is a fixed end for mounting to the mounting structure or the Dewar, and the inner cavity pressure of the bellows is less than atmospheric pressure.

4. The vibration reduction device according to claim 3, characterized in that: The first elastic member is configured as a first bellows, the second elastic member is configured as a second bellows, and the inner cavity pressure of the first bellows is equivalent to the inner cavity pressure of the second bellows.

5. The vibration reduction device according to claim 4, characterized in that: The first bellows and the second bellows are used to communicate with the vacuum chamber of the Dewar.

6. The vibration reduction device according to claim 5, characterized in that: The second bellows is used to be installed to an opening at one end of the Dewar so as to be communicated with the vacuum chamber of the Dewar.

7. The vibration reduction device according to claim 6, characterized in that: The second bellows is used for sleeved on the cold head of the machine head.

8. The vibration reduction device according to claim 7, characterized in that: The first bellows and the second bellows are used to be coaxially arranged with the cold head.

9. The vibration reduction device according to claim 5, characterized in that: The vibration reduction device also includes a vacuum tube, one end of which extends to the mounting structure and is connected to one end of the first bellows, and the other end of which is used to connect to the vacuum chamber of the Dewar.

10. The vibration reduction device according to claim 4, characterized in that: The first direction is the up-down direction, and the first bellows is located above the second bellows, so the diameter of the first bellows is greater than the diameter of the second bellows.

11. The vibration reduction device according to any one of claims 1 to 10, characterized in that: The vibration reduction device also includes a support structure, which is used to be arranged between the mounting structure and the Dewar, and the support structure is used to install the machine head, and the first elastic member and the second elastic member are correspondingly installed at two ends of the support structure in the first direction.

12. A refrigerator assembly, characterized in that: include: Nose; as well as, The vibration reduction device is the vibration reduction device according to any one of claims 1 to 11, wherein the first elastic member and the second elastic member are mounted to the machine head to elastically support the machine head.

13. A refrigeration system, characterized in that: include: A Dewar, in which a working chamber and a vacuum chamber located outside the working chamber are formed; as well as, The refrigerator assembly is a refrigerator assembly as claimed in claim 12, wherein the vibration reduction device is installed on the Dewar, the machine head is installed on the vibration reduction device, and its cold head extends into the working chamber.

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