Compact infrared refrigeration detection assembly

Abstract

The invention relates to the field of infrared detection equipment, and discloses a compact infrared refrigeration detection assembly which comprises infrared detection equipment, a cold control mechanism and a Stirling refrigerator, through linear arrangement of the infrared detection equipment, the size of the infrared detection equipment can be greatly reduced, the application environment is improved, meanwhile, the structural layout difficulty of an infrared missile is reduced, and the reliability of the infrared missile is improved. According to the utility model, by arranging the Stirling refrigerator and the cold control mechanism, the cold conduction amount of the Stirling refrigerator can be controlled in real time, the working environment of the focal plane detection chip and the image processing board can be improved, and the working stability and accuracy of the focal plane detection chip and the image processing board can be indirectly improved; the working intensity of the electromagnetic coil can be received and judged through the arranged Rogowski coil, cooling liquid is driven to circulate by driving the annular frame, heat generated by working of the electromagnetic coil is absorbed and released to the outside of the Stirling refrigerator, and refrigeration of the Stirling refrigerator is prevented from being affected.

Description

Technical Field

[0001] The invention relates to the field of infrared detection equipment, in particular to a compact infrared refrigeration detection component. Background Art

[0002] Most infrared missiles choose the cooling type focal plane detection assembly as one of the guidance components, which greatly improves the detection performance and detection accuracy. The detection assembly consists of three parts: a microdewar with a focal plane detection chip, a refrigerator, and an image processing board. Among them, the volume and weight of the refrigerator account for 70% of the detection assembly. At present, the small low-temperature refrigerators used in missiles are mainly JT refrigerators and Stirling refrigerators, and the Stirling refrigerator is an asymmetrical "L" shape.

[0003] Therefore, based on the actual use of the existing infrared cooling detection component, the asymmetric "L"-shaped Stirling refrigerator occupies a large area. At the same time, the Stirling refrigerator will generate noise and vibration during operation, affecting the operation of the focal plane detection chip and the image processing board, resulting in inaccurate detection. Moreover, when the refrigerator is cooling the focal plane detection chip and the image processing board, it is unable to effectively control the cooling capacity in time, affecting the effective cooling of the focal plane detection chip and the image processing board. For this reason, we propose a compact infrared cooling detection component. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a compact infrared refrigeration detection component, which has the advantages of controllable refrigeration, noise reduction and vibration reduction, and solves a series of problems such as high noise and vibration affecting infrared detection.

[0005] To achieve the above object, the present invention provides the following technical solution: a compact infrared refrigeration detection component, comprising: Infrared detection equipment, the infrared detection equipment includes a detection mechanism, the detection mechanism is used for infrared detection, the detection mechanism includes a dewar window and a dewar body, an image processing board is movably inserted between the dewar window and the dewar body, the image processing board is arranged in a ring shape, a focal plane detection chip is fixedly installed inside the detection mechanism, and the focal plane detection chip is electrically connected to the image processing board; The infrared detection device also includes a refrigeration mechanism fixedly connected to the bottom of the detection mechanism, the refrigeration mechanism is used to cool the detection mechanism, the refrigeration mechanism includes a refrigeration pipe fixedly connected to the inside of the Stirling refrigerator, the top of the refrigeration pipe is fixedly connected to a cooling control mechanism, and the cooling control mechanism is fixedly installed at the bottom of the Dewar body; The cooling control mechanism comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are rotatably connected with a same conductive ring in the middle, a cold finger is fixedly connected inside the cooling control mechanism, the top and the bottom of the cold finger are respectively abutted with the top of the inner wall of the upper shell and the bottom of the inner wall of the lower shell, and the opposite bottom and the bottom of the cold finger are arranged in a conical shape, a plurality of conductive flexible plates are slidably connected inside the cold finger, a plurality of conductive flexible plates are rotatably connected with a conductive flexible rod on one side, one end of the conductive flexible rod is rotatably connected with the inner wall of the conductive ring, a plurality of conductive hard rods are fixedly connected to the outside of the conductive ring, a plurality of conductive hard rods are fixedly connected to the same conductive base on the outside, and the top of the conductive base is abutted with the bottom of the image processing board.

[0006] Preferably, the cooling control mechanism also includes a temperature insulation ring fixedly connected to the bottom of the conductive base, the bottom of the temperature insulation ring is fixedly connected to a gear ring, the inner wall of the Dewar body is fixedly installed with a motor, the output end of the motor is fixedly connected to a gear, and the gear ring is meshed with the gear.

[0007] Preferably, a plurality of limit grooves are provided on the side opposite to the top and the bottom of the cold finger, and a plurality of the conductive flexible plates are slidably connected inside the corresponding limit grooves. The plurality of limit grooves are arranged in a circle, and one side of the plurality of conductive flexible plates is adapted to the outside of the cold finger.

[0008] Preferably, several of the conductive flexible plates and conductive flexible rods have flexible plate spring characteristics, the conductive hard rods extend from the outside of the Dewar body to the inside of the Dewar body and are fixedly connected to the inner wall of the conductive base, the top of the Dewar window is fixedly connected to an infrared window, and the bottom of the image processing board is electrically connected to a ceramic lead ring, and the ceramic lead ring is also used to connect to an external interface circuit.

[0009] Preferably, the refrigeration mechanism further comprises a driving plug, the outside of the driving plug is fixedly connected to an electromagnet, the inside of the Stirling cooler is fixedly connected to a mounting plate, the inside of the mounting plate is fixedly mounted with an electromagnetic coil, and the electromagnetic coil is adapted to the electromagnet.

[0010] Preferably, an isolation plate is fixedly connected to the inside of the Stirling cooler, a coolant is injected to the outside of the isolation plate, a plurality of heat sinks are fixedly connected to the outside of the isolation plate, a diverter plate is fixedly connected to the inside of the Stirling cooler, a retaining frame is fixedly connected to the inside of the diverter plate, and a Rogowski coil is fixedly installed inside the retaining frame.

[0011] Preferably, a plurality of diversion grooves are provided on the top and bottom of the diversion plate, a telescopic rod is fixedly installed inside the Stirling cooler, a driven rod is fixedly connected to the output end of the telescopic rod, a ring frame is fixedly connected to the bottom of the driven rod, and a plurality of one-way molds are fixedly connected to the inside of the ring frame.

[0012] Preferably, the inside of the annular frame abuts against the outside of the diverter plate, and the outside of the annular frame abuts against the inner wall of the Stirling refrigerator.

[0013] Compared with the prior art, the present invention provides a compact infrared refrigeration detection assembly, which has the following beneficial effects: This invention can greatly reduce the volume of infrared detection equipment and improve the applicable environment through the linear setting of infrared detection equipment. At the same time, it can reduce the difficulty of structural layout of infrared missiles, and there is no need to add additional counterweights, thereby improving the guidance accuracy of infrared missiles.

[0014] The invention can control the cold conduction of the Stirling cooler in real time by setting up a cooling control mechanism, thereby improving the working environment of the focal plane detection chip and the image processing board, and indirectly improving the working stability and accuracy of the focal plane detection chip and the image processing board.

[0015] The invention can receive and judge the working intensity of the electromagnetic coil by setting the Rogowski coil, and drive the cooling liquid to circulate by driving the annular frame, so as to absorb the heat generated by the electromagnetic coil and release it outside the Stirling refrigerator to avoid affecting the refrigeration of the Stirling refrigerator. By setting up the annular frame to work at the same frequency as the electromagnetic coil, the vibration of the Stirling cooler during operation can be effectively reduced. The coolant can also buffer and release the vibration generated by the electromagnetic coil during operation, thereby reducing vibration and noise and improving the guidance effect of the infrared missile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the infrared missile of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the infrared detection device of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure inside the detection mechanism of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the motor part of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the conductive ring part of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the cold finger of the present invention; Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part A; Fig. 9 It is a three-dimensional structural schematic diagram of the refrigeration mechanism of the present invention; Fig.10 Schematic diagram of the three-dimensional structure inside the Stirling cooler of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the annular frame of the present invention.

[0017] In the figure: 1. Infrared detection equipment; 2. Detection mechanism; 3. Refrigeration mechanism; 4. Infrared window; 5. Dewar window; 6. Dewar body; 7. Stirling refrigerator; 8. Refrigeration tube; 9. Image processing board; 10. Focal plane detection chip; 11. Ceramic lead ring; 12. Cooling control mechanism; 13. Cold finger; 14. Limiting groove; 15. Conductive flexible plate; 16. Conductive ring; 17. Upper shell; 18. Lower shell; 19. Conductive flexible rod; 20. Conductive hard rod; 21. Insulation ring; 22. Ring gear; 23. Motor; 24. Gear; 25. Conductive base; 26. Drive plug; 27. Mounting plate; 28. Electromagnetic coil; 29. ​​Electromagnet; 30. Isolation plate; 31. Heat sink; 32. Retaining frame; 33. Rogowski coil; 34. Diverter plate; 35. Diverter slot; 36. Telescopic lever; 37. Follower rod; 38. Ring frame; 39. One-way mold; 40. Heat conductive sheet; 41. Infrared missile; 42. Shell; 43. Warhead; 44. Missile window. DETAILED DESCRIPTION

[0018] 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.

[0019] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a compact infrared cooling detection component.

[0020] In a typical implementation of the present application, Figure 1-11 As shown, a compact infrared cooling detection assembly comprises: The infrared missile 41 includes a shell 42, a warhead 43 is fixedly connected to one side of the shell 42, and a missile window 44 is fixedly connected to the outside of the warhead 43; Infrared detection device 1, the infrared detection device 1 includes a detection mechanism 2, the detection mechanism 2 is used for infrared detection, the detection mechanism 2 is fixedly installed inside the warhead 43, the detection mechanism 2 includes a dewar window 5 and a dewar body 6, an image processing board 9 is movably inserted between the dewar window 5 and the dewar body 6, the image processing board 9 is arranged in a ring shape, a focal plane detection chip 10 is fixedly installed inside the detection mechanism 2, and the focal plane detection chip 10 is electrically connected to the image processing board 9; The infrared detection device 1 also includes a refrigeration mechanism 3 fixedly connected to the bottom of the detection mechanism 2, the refrigeration mechanism 3 is used to cool the detection mechanism 2, the refrigeration mechanism 3 includes a refrigeration pipe 8 fixedly connected to the inside of the Stirling refrigerator 7, the top of the refrigeration pipe 8 is fixedly connected to a cooling control mechanism 12, and the cooling control mechanism 12 is fixedly installed at the bottom of the Dewar body 6; By setting the above-mentioned structure, the shape of the infrared detection device 1 can be changed to a linear shape, which is more compact and can reduce the volume of the infrared detection device 1, so that the structural layout of the infrared missile 41 does not need to add additional counterweights to occupy a larger space to maintain the rotation of the infrared missile 41, thereby increasing the applicable environment of the infrared detection device 1 and improving the accuracy of the infrared missile 41. Specifically, the cooling pipe 8 passes through the image processing board 9 arranged in a ring shape, which can greatly reduce the volume of the infrared detection device 1 without reducing the cooling effect of the refrigeration mechanism 3.

[0021] The cooling control mechanism 12 includes an upper shell 17 and a lower shell 18, wherein a conductive ring 16 is rotatably connected between the upper shell 17 and the lower shell 18, a cold finger 13 is fixedly connected inside the cooling control mechanism 12, the top and bottom of the cold finger 13 are respectively abutted against the top of the inner wall of the upper shell 17 and the bottom of the inner wall of the lower shell 18, and the opposite bottom and bottom of the cold finger 13 are arranged in a conical shape, a plurality of conductive flexible plates 15 are slidably connected inside the cold finger 13, a conductive flexible rod 19 is rotatably connected to one side of the plurality of conductive flexible plates 15, and one end of the conductive flexible rod 19 is rotatably connected to the inner wall of the conductive ring 16, a plurality of conductive hard rods 20 are fixedly connected to the outside of the conductive ring 16, and a conductive base 25 is fixedly connected to the outside of the plurality of conductive hard rods 20, and the top of the conductive base 25 is abutted against the bottom of the image processing board 9; A plurality of limit grooves 14 are provided on the top and the bottom of the cold finger 13, and a plurality of conductive flexible plates 15 are slidably connected to the inside of the corresponding limit grooves 14. The limit grooves 14 are arranged in a circumference. One side of the plurality of conductive flexible plates 15 is adapted to the outside of the cold finger 13. The plurality of conductive flexible plates 15 and the conductive flexible rod 19 have flexible leaf spring characteristics. The conductive hard rod 20 extends from the outside of the Dewar body 6 to the inside of the Dewar body 6 and is fixedly connected to the inner wall of the conductive base 25. By setting up the above-mentioned structure, the refrigeration conduction of the refrigeration mechanism 3 can be accurately controlled in real time, thereby improving the working environment of the focal plane detection chip 10 and the image processing board 9, and indirectly improving the working stability and accuracy of the focal plane detection chip 10 and the image processing board 9. Specifically, when the refrigeration mechanism 3 conducts the cold energy to the cooling control mechanism 12 through the cooling tube 8, part of the cold energy will be conducted to the focal plane detection chip 10 on the top of the cooling control mechanism 12 through the cold finger 13, so as to cool the focal plane detection chip 10. At the same time, a small amount of cold energy will be conducted to the focal plane detection chip 10 through the conductive flexible plate 15, so as to provide cooling for the focal plane detection chip 10. In addition, part of the cold energy conducted to the conductive flexible plate 15 will be conducted to the conductive ring 16 through a number of conductive flexible rods 19, and then conducted to the conductive bottom by the conductive hard rod 20. The seat 25 is used to cool the image processing board 9 to ensure that the focal plane detection chip 10 and the image processing board 9 can be cooled. Since the focal plane detection chip 10 and the image processing board 9 are electrically connected, the cooling temperature of the focal plane detection chip 10 can be read by the image processing board 9. When the image processing board 9 reads that the cooling temperature of the focal plane detection chip 10 by the refrigeration mechanism 3 is too high or too low to affect the use of the infrared detection device 1, the conductive base 25 is rotated at this time. The conductive base 25 rotates to drive the conductive hard rod 20 to rotate. The conductive hard rod 20 rotates to drive the conductive ring 16 to rotate. The conductive ring 16 rotates to drive the plurality of conductive flexible rods 19 to rotate. The plurality of conductive flexible rods 19 rotate to drive the plurality of conductive flexible plates 15 to move and deform, thereby controlling the cooling temperature transmitted to the focal plane detection chip 10 and the image processing board 9. More specifically, when the image processing board 9 detects that the operating temperature of the focal plane detection chip 10 is too high, the conduction ring 16 is rotated clockwise at this time. Since the conduction flexible plate 15 is restricted inside the corresponding limit groove 14, the plurality of conduction flexible plates 15 gradually approach the cold finger 13 and produce an inward bending deformation. Since the bottom and bottom of the cold finger 13 are both arranged in a conical shape, the deformation caused by the inward bending of the conduction flexible plate 15 causes the inner wall of the conduction flexible plate 15 to abut against the outer part of the bottom and bottom of the cold finger 13, which are both arranged in a conical shape, thereby increasing the area of ​​the conduction flexible plate 15 for conducting cold, while reducing the conduction distance of the conduction flexible plate 15, thereby improving the cold conduction efficiency of the cooling control mechanism 12. At the same time, since the conductive flexible plate 15 generates resistance during the deformation process, the resistance of the deformation of the conductive flexible plate 15 will act on the conductive flexible rod 19, causing the conductive flexible rod 19 to bend and deform. The bending and deformation of the conductive flexible rod 19 will cause one side of the conductive flexible rod 19 to gradually abut against the inside of the conductive ring 16, thereby increasing the conduction area between the conductive flexible rod 19 and the conductive ring 16, while reducing the conduction distance between the conductive flexible plate 15 and the conductive ring 16, increasing the cold conduction amount of the conductive base 25, and improving the cooling effect on the image processing board 9. When the image processing board 9 detects that the operating temperature of the focal plane detection chip 10 is too low, the conductive ring 16 can be rotated counterclockwise at this time; The specific calculation formula is as follows: Q=k*A*ΔT / d, where Q represents the heat conduction, k represents the thermal conductivity of the object, A represents the heat transfer cross-sectional area, ΔT represents the temperature difference, and d represents the heat transfer distance; This formula shows that the heat conduction rate is proportional to the heat transfer cross-sectional area and temperature gradient, and inversely proportional to the heat transfer distance.

[0022] It is worth mentioning that among the existing cold conduction materials, materials with flexible leaf spring characteristics in low temperature environments include chrome vanadium steel, stainless steel, copper alloy and nickel-based alloy, all of which can meet the above design requirements.

[0023] The cooling control mechanism 12 also includes a temperature-isolating ring 21 fixedly connected to the bottom of the conductive base 25, a gear ring 22 is fixedly connected to the bottom of the temperature-isolating ring 21, a motor 23 is fixedly installed on the inner wall of the Dewar body 6, a gear 24 is fixedly connected to the output end of the motor 23, the gear ring 22 is meshed with the gear 24, an infrared window 4 is fixedly connected to the top of the Dewar window 5, and a ceramic lead ring 11 is electrically connected to the bottom of the image processing board 9, and the ceramic lead ring 11 is also used to connect to an external interface circuit.

[0024] By setting the above-mentioned structure, the conduction base 25 can be driven to rotate. Specifically, the motor 23 is started, the output end of the motor 23 rotates and drives the gear 24 to rotate. The rotation of the gear 24 drives the gear ring 22 meshing therewith to rotate. The rotation of the gear ring 22 drives the temperature insulation ring 21 to rotate. The rotation of the temperature insulation ring 21 drives the conduction base 25 to rotate, so that the cold conduction amount of the cooling control mechanism 12 can be controlled.

[0025] Further, in the above scheme, the refrigeration mechanism 3 also includes a driving plug 26, the outside of the driving plug 26 is fixedly connected to an electromagnet 29, the inside of the Stirling refrigerator 7 is fixedly connected to a mounting plate 27, the inside of the mounting plate 27 is fixedly installed with an electromagnetic coil 28, and the electromagnetic coil 28 is adapted to the electromagnet 29. The above are all existing structures of the Stirling refrigerator 7, and no further details are given here; An isolation plate 30 is fixedly connected to the interior of the Stirling refrigerator 7, a coolant is injected to the exterior of the isolation plate 30, a plurality of heat sinks 31 are fixedly connected to the exterior of the isolation plate 30, a manifold 34 is fixedly connected to the interior of the Stirling refrigerator 7, a retaining frame 32 is fixedly connected to the interior of the manifold 34, and a Rogowski coil 33 is fixedly installed to the interior of the retaining frame 32; A plurality of flow dividing grooves 35 are provided on the top and bottom of the flow dividing plate 34. A telescopic rod 36 is fixedly installed inside the Stirling refrigerator 7. A driven rod 37 is fixedly connected to the output end of the telescopic rod 36. A ring frame 38 is fixedly connected to the bottom of the driven rod 37. A plurality of one-way molds 39 are fixedly connected inside the ring frame 38. The inside of the annular frame 38 abuts against the outside of the diverter plate 34 , and the outside of the annular frame 38 abuts against the inner wall of the Stirling cooler 7 .

[0026] By setting the above structure, the working state of the electromagnetic coil 28 can be monitored in real time, and the heat generated by the electromagnetic coil 28 during operation can be taken away to prevent the heat generated by the electromagnetic coil 28 during operation from affecting the refrigeration of the Stirling refrigerator 7. Specifically, during the operation of the electromagnetic coil 28, when current passes through the wire, due to the interaction between electrons and atoms of the wire material, the electron energy will be converted into heat energy, causing the coil temperature to rise, so that the temperature of the electromagnetic coil 28 gradually increases. At the same time, the working magnetic field of the electromagnetic coil 28 will diffuse to the outside and be received by the external Rogowski coil 33. At this time, the electromagnetic coil 28 can be turned into heat energy by the electric current. The received signal accurately determines the working intensity of the electromagnetic coil 28. At this time, according to the working intensity and working frequency of the electromagnetic coil 28 received by the Rogowski coil 33, the telescopic rod 36 is controlled to be extended and retracted. The output end of the telescopic rod 36 is extended and retracted to drive the driven rod 37 to move. The movement of the driven rod 37 drives the annular frame 38 to move. The movement of the annular frame 38 drives the one-way mold 39 to move. The movement of the one-way mold 39 drives the coolant inside the Stirling refrigerator 7 to circulate around the diverter plate 34, absorbs the heat generated by the electromagnetic coil 28, and conducts it to the outer part of the Stirling refrigerator 7 through the coolant and the heat conducting sheet 40. It is worth mentioning that in the process of the telescopic rod 36 extending and retracting following the working frequency of the electromagnetic coil 28, the vibration generated by the operation of the electromagnetic coil 28 and the direction of the movement of the coolant driven by the telescopic rod 36 are offset, thereby reducing the vibration generated by the electromagnetic coil 28 when it is working. At the same time, the coolant can also buffer and release the vibration generated by the electromagnetic coil 28 when it is working, thereby reducing vibration and noise and improving the guidance effect of the infrared missile 41.

[0027] Working principle of the present invention: when the refrigeration mechanism 3 conducts cold energy to the cooling control mechanism 12 through the cooling pipe 8, part of the cold energy will be conducted to the focal plane detection chip 10 on the top of the cooling control mechanism 12 through the cold finger 13 to cool the focal plane detection chip 10, and at the same time, a small amount of cold energy will be conducted to the focal plane detection chip 10 through the conductive flexible plate 15 to provide cooling for the focal plane detection chip 10. In addition, part of the cold energy conducted to the conductive flexible plate 15 will be conducted to the conductive ring 16 through a number of conductive flexible rods 19, and then conducted to the conductive base 25 by the conductive hard rod 20 to cool the image processing board 9, so as to ensure that the focal plane detection chip 10 and the image processing board 9 can be cooled. Since the focal plane detection chip 10 and the image processing board 9 are electrically connected, the cooling temperature of the focal plane detection chip 10 can be read by the image processing board 9; When the image processing board 9 detects that the working temperature of the focal plane detection chip 10 is too high, the conductive ring 16 is rotated clockwise at this time. Since the conductive flexible plates 15 are restricted inside the corresponding limiting grooves 14, the conductive flexible plates 15 gradually approach the cold fingers 13 and bend inwardly. Since the bottom and bottom of the cold fingers 13 are arranged in a conical shape, the deformation caused by the inward bending of the conductive flexible plates 15 causes the inner wall of the conductive flexible plates 15 to abut against the outer part of the bottom and bottom of the cold fingers 13, which are arranged in a conical shape, thereby increasing the area of ​​the conductive flexible plates 15 for conducting cold and reducing the conductive flexible plates 15. The conduction distance is increased to improve the cold conduction effect of the cooling control mechanism 12. At the same time, since the conduction flexible plate 15 generates resistance during the deformation process, the resistance of the deformation of the conduction flexible plate 15 will act on the conduction flexible rod 19, causing the conduction flexible rod 19 to bend and deform. The bending and deformation of the conduction flexible rod 19 will cause one side of the conduction flexible rod 19 to gradually abut against the inside of the conduction ring 16, thereby increasing the conduction area between the conduction flexible rod 19 and the conduction ring 16 and reducing the conduction distance between the conduction flexible plate 15 and the conduction ring 16, thereby increasing the cold conduction amount of the conduction base 25 and improving the cooling effect on the image processing board 9. When the image processing board 9 detects that the operating temperature of the focal plane detection chip 10 is too low, the conductive ring 16 can be rotated counterclockwise; During the operation of the electromagnetic coil 28, when current passes through the wire, due to the interaction between electrons and atoms of the wire material, the electron energy will be converted into heat energy, resulting in an increase in the temperature of the coil, causing the temperature of the electromagnetic coil 28 to gradually increase. At the same time, the working magnetic field of the electromagnetic coil 28 will diffuse to the outside and be received by the external Rogowski coil 33. At this time, the working intensity of the electromagnetic coil 28 can be accurately determined by the received signal. At this time, according to the working intensity and working frequency of the electromagnetic coil 28 received by the Rogowski coil 33, the telescopic rod 36 is controlled to be extended and retracted. The output end of the telescopic rod 36 is extended and retracted to drive the driven rod 37 to move. The movement of the driven rod 37 drives the annular frame 38 to move. The movement of the annular frame 38 drives the one-way mold 39 to move. The movement of the one-way mold 39 drives the coolant inside the Stirling refrigerator 7 to circulate around the diverter plate 34, absorb the heat generated by the operation of the electromagnetic coil 28, and conduct it to the outer part of the Stirling refrigerator 7 through the coolant and the heat conductive sheet 40.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact infrared refrigeration detection assembly, characterized in that: include, An infrared detection device (1), the infrared detection device (1) comprising a detection mechanism (2), the detection mechanism (2) being used for infrared detection, the detection mechanism (2) comprising a dewar window (5) and a dewar body (6), an image processing board (9) being movably inserted between the dewar window (5) and the dewar body (6), the image processing board (9) being arranged in a ring shape, a focal plane detection chip (10) being fixedly installed inside the detection mechanism (2), the focal plane detection chip (10) being electrically connected to the image processing board (9); The infrared detection device (1) further comprises a refrigeration mechanism (3) fixedly connected to the bottom of the detection mechanism (2), the refrigeration mechanism (3) being used to cool the detection mechanism (2), the refrigeration mechanism (3) comprising a refrigeration tube (8) fixedly connected to the inside of a Stirling refrigerator (7), the top of the refrigeration tube (8) being fixedly connected to a cooling control mechanism (12), the cooling control mechanism (12) being fixedly mounted on the bottom of the Dewar body (6); The cooling control mechanism (12) comprises an upper shell (17) and a lower shell (18), wherein the upper shell (17) and the lower shell (18) are rotatably connected to a same conductive ring (16), wherein a cold finger (13) is fixedly connected inside the cooling control mechanism (12), wherein the top and bottom of the cold finger (13) respectively abut against the top of the inner wall of the upper shell (17) and the bottom of the inner wall of the lower shell (18), and the opposite bottom and bottom of the cold finger (13) are arranged in a conical shape, wherein a plurality of conductive flexible plates (15) are slidably connected inside the cold finger (13), and one side of each of the plurality of conductive flexible plates (15) is rotatably connected to a conductive flexible rod (19), and one end of each of the conductive flexible rods (19) is rotatably connected to the inner wall of the conductive ring (16), wherein a plurality of conductive hard rods (20) are fixedly connected outside the conductive ring (16), and the plurality of conductive hard rods (20) are fixedly connected outside the same conductive base (25), and the top of the conductive base (25) abuts against the bottom of the image processing board (9).

2. A compact infrared refrigeration detection assembly according to claim 1, characterized in that: The cooling control mechanism (12) further comprises a temperature-isolating ring (21) fixedly connected to the bottom of the conductive base (25), a gear ring (22) fixedly connected to the bottom of the temperature-isolating ring (21), a motor (23) fixedly mounted on the inner wall of the dewar body (6), a gear (24) fixedly connected to the output end of the motor (23), and the gear ring (22) meshes with the gear (24).

3. A compact infrared refrigeration detection assembly according to claim 2, characterized in that: A plurality of limiting grooves (14) are provided on the top and the bottom sides of the cold finger (13), and a plurality of the conductive flexible plates (15) are slidably connected inside the corresponding limiting grooves (14). The plurality of limiting grooves (14) are arranged in a circumference, and one side of the plurality of conductive flexible plates (15) is adapted to the outside of the cold finger (13).

4. A compact infrared refrigeration detection assembly according to claim 3, characterized in that: The plurality of conductive flexible plates (15) and conductive flexible rods (19) all have flexible plate spring characteristics; the conductive rigid rods (20) extend from the outside of the dewar body (6) to the inside of the dewar body (6) and are fixedly connected to the inner wall of the conductive base (25); the top of the dewar window (5) is fixedly connected to the infrared window (4); the bottom of the image processing board (9) is electrically connected to a ceramic lead ring (11); and the ceramic lead ring (11) is also used to connect to an external interface circuit.

5. A compact infrared refrigeration detection assembly according to claim 1, characterized in that: The refrigeration mechanism (3) further comprises a driving plug (26), the outside of which is fixedly connected to an electromagnet (29), the inside of which is fixedly connected to a mounting plate (27), the inside of which is fixedly mounted an electromagnetic coil (28), and the electromagnetic coil (28) is adapted to match the electromagnet (29).

6. A compact infrared refrigeration detection assembly according to claim 5, characterized in that: An isolation plate (30) is fixedly connected to the interior of the Stirling cooler (7), a coolant is injected to the exterior of the isolation plate (30), a plurality of heat sinks (31) are fixedly connected to the exterior of the isolation plate (30), a flow divider (34) is fixedly connected to the interior of the Stirling cooler (7), a retaining frame (32) is fixedly connected to the interior of the flow divider (34), and a Rogowski coil (33) is fixedly mounted to the interior of the retaining frame (32).

7. A compact infrared refrigeration detection assembly according to claim 6, characterized in that: The top and bottom of the diverter plate (34) are both provided with a plurality of diverter grooves (35); a telescopic rod (36) is fixedly installed inside the Stirling cooler (7); the output end of the telescopic rod (36) is fixedly connected to a driven rod (37); the bottom of the driven rod (37) is fixedly connected to an annular frame (38); and the inside of the annular frame (38) is fixedly connected to a plurality of one-way molds (39).

8. A compact infrared refrigeration detection assembly according to claim 7, characterized in that: The interior of the annular frame (38) abuts against the exterior of the diverter plate (34), and the exterior of the annular frame (38) abuts against the inner wall of the Stirling refrigerator (7).

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