Damping structure based on refrigerating machine
By using spring steel vibration damper plates and nylon rubber vibration isolation pads in refrigeration type infrared thermal imager, the refrigeration machine and metal microdewarmer are divided and installed, and the vibration frequency is changed, the problem of vibration affecting image quality of the Stirling refrigerator is solved. , significantly improves the stability and image quality of the device.
Patent Information
- Application Number
- CN202421036878.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-13
AI Technical Summary
Vibration of the Stirling refrigerator causes the image quality of the refrigeration infrared thermal imager to degrade, affecting product performance.
Using spring steel material vibration damping plate, base and vibration isolation pad, separate the refrigerator and metal micro-dewar, absorb and release vibration energy through spring steel, and change the vibration frequency through vibration isolation pad to reduce the vibration of the refrigerator to metal micro-dewar Dewar’s influence.
Effectively reduce the vibration of the refrigerator, improve the stability of the metal micro-dewar and detector, and thus improve the image quality of the refrigeration infrared thermal imager.
Smart Images
Figure CN222186396U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of refrigerators, and in particular to a shock absorbing structure based on refrigerators. Background Art
[0002] Cooled infrared thermal imagers have the advantages of high frame rate, high thermal sensitivity, high detection accuracy, and low error, so they are suitable for large lenses for long-distance target detection. In order to reduce thermal noise to below the level of scene imaging signals, cooled infrared thermal imagers need to be cooled by an internal circulation refrigerator to reduce the temperature of the detector. Therefore, the cooled infrared focal plane detector assembly is generally composed of a detector chip, a readout circuit, a metal micro-dewar, a Stirling refrigerator, an infrared window, etc. Among them, the Stirling refrigerator provides the infrared detector with the low-temperature working environment required to exert its optimal performance, and the metal micro-dewar provides packaging and heat insulation for the detector chip. The metal micro-dewar and the Stirling refrigerator are connected through the refrigerator sub-tube to form a detector assembly, and the whole is directly installed on a base structure.
[0003] The Stirling refrigerator is mainly composed of a compressor, a piston, a cold storage device, a cold finger, a circuit interface, a driving circuit, a mechanical reference positioning surface, etc. Therefore, when the Stirling refrigerator starts working, it will generate vibrations, thereby driving the metal micro-dewar and the detector inside the metal micro-dewar to vibrate, which will eventually lead to a decrease in the image quality of the cooled infrared thermal imager, affecting product performance. Utility Model Content
[0004] In order to reduce the vibration of a Stirling refrigerator in a refrigerated infrared thermal imager and thus improve the image quality, the present application provides a shock absorbing structure based on a refrigerator.
[0005] The present application provides a shock absorbing structure based on a refrigerator, which adopts the following technical solution:
[0006] A shock-absorbing structure based on a refrigerator, characterized in that it includes a base and a shock-absorbing plate installed on one of the vertical side walls of the base, the base is located below a metal micro-dewar for installing the metal micro-dewar, the shock-absorbing plate is located between the base and the refrigerator, and the refrigerator is installed on the shock-absorbing plate, and the material of the shock-absorbing plate is spring steel.
[0007] By adopting the above technical solution, the present application installs the refrigerator and the metal micro-dewar separately by installing the vibration-damping plate on the base and the refrigerator on the vibration-damping plate, thereby reducing the influence of the motor vibration of the refrigerator on the metal micro-dewar. The vibration-damping plate material in the present application is spring steel. The spring steel has certain mechanical properties and can provide installation conditions for the refrigerator. The spring steel also has certain elasticity. When the refrigerator vibrates, it has certain kinetic energy and potential energy. The spring steel can absorb and release this part of energy, so that the vibration of the refrigerator is attenuated, thereby improving the stability of the metal micro-dewar and the detector in the metal micro-dewar, thereby improving the image quality taken by the refrigerated infrared thermal imager.
[0008] Optionally, a vibration isolation pad is connected between the vibration damping plate and the base.
[0009] By adopting the above technical solution, the vibration isolation pad can change the vibration frequency, reduce the propagation of vibration, and further reduce the influence of refrigerator vibration on the metal micro-Dewar.
[0010] Optionally, the vibration isolation pad is made of nylon rubber.
[0011] By adopting the above technical solution, the vibration isolation pad made of nylon rubber material has good vibration isolation effect, light weight, wear resistance and long service life.
[0012] Optionally, the connection between the vibration damping plate and the refrigerator is a detachable connection.
[0013] Optionally, the connection between the vibration damping plate and the base is a detachable connection.
[0014] Optionally, the vibration damping plate is connected to the base via bolts and the bolts pass through the vibration isolation pad.
[0015] By adopting the above technical solution, both the vibration-damping plates and the vibration-isolating pads can be disassembled, so that the worn vibration-damping plates and vibration-isolating pads can be easily replaced to achieve normal vibration attenuation of the refrigerator.
[0016] Optionally, the thickness of the spring steel is 0.3-0.5 mm.
[0017] By adopting the above technical solution, when the thickness of the spring steel is 0.3-0.5 mm, the mechanical properties of the spring steel can meet the requirements for installing the refrigerator and can also better attenuate the vibration of the refrigerator.
[0018] Optionally, the spring steel is made of No. 65 spring steel.
[0019] By adopting the above technical solution, the elasticity and comprehensive mechanical properties of No. 65 spring steel are good, and it is easy to be processed into different shapes.
[0020] In summary, the present application includes at least one of the following beneficial technical effects:
[0021] 1. The present application installs the refrigerator and the metal micro-dewar separately by installing the vibration-damping sheet on the base and the refrigerator on the vibration-damping sheet, thereby reducing the influence of the motor vibration of the refrigerator on the metal micro-dewar. The vibration-damping sheet in the present application is made of spring steel. The spring steel has certain mechanical properties and can provide installation conditions for the refrigerator. The spring steel also has certain elasticity. When the refrigerator vibrates, it has certain kinetic energy and potential energy. The spring steel can absorb and release this part of energy, so that the vibration of the refrigerator is attenuated, thereby improving the stability of the metal micro-dewar and the detector in the metal micro-dewar, thereby improving the image quality taken by the refrigerated infrared thermal imager;
[0022] 2. The vibration isolation pad can change the vibration frequency, reduce the propagation of vibration, and further reduce the impact of refrigerator vibration on the metal micro-Dewar. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;
[0024] Figure 2 Intended to show the location of vibration damping plates and isolating pads.
[0025] In the figure, 1. base; 2. vibration damping plate; 3. vibration isolation pad. DETAILED DESCRIPTION
[0026] The following is combined with Figure 1-2 This application is described in further detail.
[0027] The embodiment of the present application discloses a shock absorbing structure based on a refrigerator.
[0028] like Figure 1 and Figure 2 As shown, a shock-absorbing structure based on a refrigerator includes a base 1 and a shock-absorbing plate 2 connected to one of the vertical side walls of the base 1. The base 1 is located below a metal micro-dewar for installing the metal micro-dewar. The shock-absorbing plate 2 is located between the base 1 and the refrigerator, and the refrigerator is connected to a side of the shock-absorbing plate 2 away from the base 1. The material of the shock-absorbing plate 2 is spring steel.
[0029] The present application does not directly install the vibration damping plate 2 and the refrigerator on the same base 1 at the same time, but realizes the separate installation of the refrigerator and the metal micro-dewar by installing the vibration damping plate 2 on the base 1 and the refrigerator on the vibration damping plate 2, thereby reducing the influence of the motor vibration of the refrigerator on the metal micro-dewar. In the present application, the vibration damping plate 2 is made of spring steel. The spring steel has certain mechanical properties and can provide installation conditions for the refrigerator. The spring steel also has certain elasticity. When the refrigerator vibrates, it has certain kinetic energy and potential energy. The spring steel can absorb and release this part of energy, so that the vibration of the refrigerator is attenuated, thereby improving the stability of the metal micro-dewar and the detector in the metal micro-dewar, and then improving the image quality taken by the refrigerated infrared thermal imager.
[0030] The thickness of the spring steel is 0.3-0.5mm, and the material of the spring steel is No. 65 spring steel.
[0031] The mechanical properties of spring steel in the above thickness range can meet the requirements of refrigerator installation and can also effectively attenuate the vibration of the refrigerator; No. 65 spring steel has good elasticity and comprehensive mechanical properties and can be easily processed into different shapes.
[0032] like Figure 1 and Figure 2 As shown, a vibration isolation pad 3 is connected between the vibration damping plate 2 and the base 1 , and the material of the vibration isolation pad 3 is nylon rubber.
[0033] The vibration isolation pad 3 can change the vibration frequency, reduce the propagation of vibration, and further reduce the impact of refrigerator vibration on the metal micro-Dewar. Compared with the vibration isolation pad 3 made of other materials, the vibration isolation pad 3 made of nylon rubber has good vibration isolation effect, light weight, wear resistance and long service life.
[0034] like Figure 1 and Figure 2 As shown, the vibration damping plate 2 is connected to the refrigerator by bolts, and the vibration damping plate 2 is also connected to the base 1 by bolts, and the bolts pass through the vibration isolation pad 3.
[0035] Both the vibration-damping sheet 2 and the vibration-isolating pad 3 are detachable, so that worn vibration-damping sheets 2 and vibration-isolating pads 3 can be easily replaced to achieve normal vibration attenuation of the refrigerator.
[0036] The implementation principle of the shock-absorbing structure based on the refrigerator in the embodiment of the present application is as follows: since the vibration-damping plate 2 is located between the base 1 and the refrigerator, the metal micro-dewar is directly installed on the base 1, and the refrigerator is installed on the vibration-damping plate 2, thereby realizing the separate installation of the metal micro-dewar and the refrigerator. When the refrigerator vibrates, the vibration-damping plate 2 and the vibration isolation pad 3 effectively reduce the vibration together, so that the vibration of the refrigerator is attenuated, thereby improving the stability of the metal micro-dewar and the detector inside the metal micro-dewar.
[0037] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A shock absorbing structure based on a refrigerator, characterized in that: The invention comprises a base (1) and a vibration-damping plate (2) installed on one of the vertical side walls of the base (1); the base (1) is located below a metal micro-dewar and is used to install the metal micro-dewar; the vibration-damping plate (2) is located between the base (1) and a refrigerator, and the refrigerator is installed on the vibration-damping plate (2); and the vibration-damping plate (2) is made of spring steel.
2. The shock absorbing structure based on a refrigerator according to claim 1, characterized in that: A vibration isolation pad (3) is also connected between the vibration damping plate (2) and the base (1).
3. The shock absorbing structure based on a refrigerator according to claim 2, characterized in that: The material of the vibration isolation pad (3) is nylon rubber.
4. The shock absorbing structure based on a refrigerator according to claim 1, characterized in that: The connection between the vibration damping plate (2) and the refrigerator is a detachable connection.
5. The shock absorbing structure based on a refrigerator according to claim 2, characterized in that: The connection between the vibration-damping plate (2) and the base (1) is a detachable connection.
6. The shock absorbing structure based on a refrigerator according to claim 5, characterized in that: The vibration-damping plate (2) is connected to the base (1) via bolts, and the bolts pass through the vibration-isolating pad (3).
7. The shock absorbing structure based on a refrigerator according to claim 1, characterized in that: The thickness of the spring steel is 0.3-0.5 mm.
8. The shock absorbing structure based on a refrigerator according to claim 1, characterized in that: The material of the spring steel is No. 65 spring steel.