A force lever type refrigerating machine execution control mechanism

Abstract

The application belongs to the technical field of vacuum refrigerator, and discloses a force-adding rod type refrigerator execution control mechanism. The mechanism comprises a manipulator, a control rod, a force-adding balance rod, a force-adding rod support seat, an action execution rod and a thermal conduction hammer. The manipulator is installed on the top side of a top plate. The manipulator pushes the control rod, which reciprocally slides along the axis of the control rod. The control rod slides through the top plate and a first cold plate. The lower end of the action execution rod is provided with the thermal conduction hammer, which abuts against the last contact cold plate. The force-adding balance rod is arranged between the starting cold plate and the last contact cold plate. The force-adding rod support seat is fixed to the lower side of the starting cold plate. The force-adding balance rod is rotatably connected to the force-adding rod support seat. The force-adding balance rod is rotatably connected with the action execution rod and the control rod at both ends. The mechanism solves the problem that the normal pressure between the thermal conduction hammer and the last contact cold plate is low, the heat transfer is not high, and the cooling time is slow in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum refrigerators, and in particular to an actuating control mechanism for a booster type refrigerator. Background Art

[0002] In order to achieve an ultra-low temperature environment, the ultra-low temperature dry dilution refrigerator is equipped with multiple layers of plates, including a top plate, a cold plate, a starting cold plate and a last contact cold plate from the outside to the inside. The space between each group of plates is independent of each other, and the gas inside the top plate is in a vacuum state, so all the plates in the top plate are in a vacuum environment. The equipment contains equipment that needs to be stored at low temperatures in the vacuum space inside the innermost last cold contact cold plate. The temperature of the refrigerator gradually decreases from the outside to the inside, and the temperature between the layers is lower as it approaches the center.

[0003] The heat conduction hammer is connected to the outer surface of the last contact cold plate by the conventional technology, so that the heat conduction hammer can be brought into contact with the outer surface of the last contact cold plate. The heat conduction hammer is generally connected to a manipulator capable of linear movement. The manipulator pushes the heat conduction hammer downward so that the heat conduction hammer abuts against the last contact cold plate. However, since the pressing force of the manipulator is limited by the maximum working pressure of the manipulator, the pressure after the heat conduction hammer contacts the last contact cold plate is low, the heat conduction transfer efficiency is low, and the cooling time is slow. In addition, the conventional technology also performs crimping by rotating gears, but the assembly precision between the gears is high, and they will shrink and deform after being cooled, which makes the heat conduction hammer unable to move in the refrigerator. In addition, the internal temperature of the ultra-low temperature dry dilution refrigerator is low and the cleanliness requirements of the internal environment are high, so it is impossible to lubricate the gears. The strength of the gears is low at low temperatures and they are easily damaged. Therefore, it is not reliable to use gears as transmission components. Summary of the Invention

[0004] The object of the present invention is to provide a booster type refrigerator execution control mechanism to solve the problems of low positive pressure between the heat-conducting hammer and the last contact cold plate, low heat transfer and slow cooling time in the prior art.

[0005] To achieve this purpose, the present invention adopts the following technical solutions: The present invention provides a booster-type refrigerator execution control mechanism, comprising a manipulator, a control rod, a booster balance rod, a booster rod support seat, an action execution rod and a thermal hammer, wherein the manipulator is mounted on the upper side of the top plate, the manipulator pushes the control rod and slides back and forth along the axis of the control rod, the control rod is slidably passed through the top plate and the first cold plate, a thermal hammer is mounted on the lower end of the action execution rod, the thermal hammer abuts against the last contact cold plate, the booster balance rod is arranged between the starting cold plate and the last contact cold plate, and the booster rod support seat is fixed On the lower side of the starting cold plate, the force balancing rod is rotatably connected to the force rod support seat, and the two ends of the force balancing rod are rotatably connected to the action execution rod and the control rod, and the distance between the force rod support seat and the action execution rod is smaller than the distance between the force rod support seat and the control rod; a knob is installed on the upper side of the manipulator, and when the knob is rotated clockwise, the control rod moves downward, and when the knob is rotated counterclockwise, the control rod is controlled to move upward, downward, and upward. A copper rope is connected to the starting cold plate, and the other end of the copper rope is connected to the action execution rod, and the copper rope can conduct heat.

[0006] Preferably, a first through hole is provided on the force-adding balance rod, a second through hole is provided on the control rod, a first sliding bolt is passed through the first through hole and the second through hole, the first sliding bolt is screwed to the first nut, and the force-adding balance rod and the control rod are provided between the bolt head of the first sliding bolt and the first nut.

[0007] Preferably, the first through hole is an elongated through hole, and the first sliding bolt can slide in the first through hole.

[0008] Preferably, a third through hole is provided on the force balancing rod, a fourth through hole is provided on the action execution rod, a second sliding bolt is passed through the third through hole and the fourth through hole, the second sliding bolt is screwed to the second nut, and the force balancing rod and the action execution rod are provided between the bolt head of the second sliding bolt and the second nut.

[0009] Preferably, the third through hole is an elongated through hole, and the second sliding bolt can slide in the third through hole.

[0010] Preferably, a sleeve is installed on the top plate, and the manipulator is installed on the sleeve.

[0011] Preferably, a contact seat is installed on the last contact cold plate, and the thermal hammer is inserted into the contact seat.

[0012] Preferably, a conical groove is formed on the upper side of the contact seat, and a conical head is formed on the thermal hammer, and the conical head is inserted into the conical groove.

[0013] As an example, the thermal hammer is detachably connected to the action execution rod, and the action execution rod can also insert the component to be installed into the target position in the refrigerator.

[0014] Beneficial effect: Since the distance between the force rod support seat and the action execution rod is smaller than the distance between the force rod support seat and the control rod, the force applied by the control rod on one side of the manipulator to the force balance rod is constant, but since the force arm on one side of the control rod is larger, according to the laws of physics, when the manipulator drives the control rod to move upward, it will apply a greater pressure on the action execution rod to press the last contact cold plate, so that the thermal conduction hammer and the last contact cold plate fit more closely, making the heat conduction efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Fig. 1 This is an installation diagram of the internal press-fit device of the ultra-low temperature dry dilution refrigerator of the present invention;

[0016] Fig. 2 This is a main diagram of the actuator control mechanism of the booster type refrigerator of the present invention;

[0017] Fig. 3 It is a partial enlarged view of the thermal hammer of the execution control mechanism of the booster type refrigerator of the present invention.

[0018] In the figure: 1-manipulator; 2-control lever; 3-force balancing lever; 4-force lever support seat; 5-action execution lever; 6-thermal hammer; 61-conical head; 7-sleeve; 8-contact seat; 81-conical groove; 9-top plate; 10-first cold plate; 11-starting cold plate; 12-last contact cold plate; 13-first sliding bolt; 14-second sliding bolt; 15-copper rope. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0020] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0021] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0023] The main structure of an ultra-low-temperature dry dilution refrigerator is wrapped in a multi-layer plate structure, which is arranged from the outside to the inside in the order of the top plate, the first cold plate, the starting cold plate, and the final contact cold plate. The space inside the top plate is completely vacuum, and the temperature gradually decreases from the outside to the inside. The space inside the final contact cold plate has the lowest temperature. Generally, a thermal hammer is abutted against the final contact cold plate to achieve heat conduction, lowering the temperature of the final contact cold plate to the target temperature. Under existing technology, a manipulator usually directly pushes the rod body so that the thermal hammer at the lower end of the rod body is pressed against the final contact cold plate. The thermal hammer needs to generate a large pressure on the final contact cold plate, but the working torque of existing manipulators is low, and the pressure applied to the thermal hammer is insufficient. The thermal hammer does not fit tightly with the final contact cold plate, resulting in a slow cooling time.

[0024] In order to solve the above problems, Figs. 1-3As shown, the present invention provides a force-added rod type refrigerator execution control mechanism, including a manipulator 1, a control rod 2, a force-added balance rod 3, a force-added rod support seat 4, an action execution rod 5 and a thermal hammer 6. The manipulator 1 is installed on the upper side of the top plate 9, and the manipulator 1 pushes the control rod 2 and slides back and forth along the axis of the control rod 2. The control rod 2 is slidably penetrated on the top plate 9 and the first cold plate 10. The lower end of the action execution rod 5 is installed with a thermal hammer 6, which abuts against the last contact cold plate 12. The force-added balance rod 3 is arranged between the starting cold plate 11 and the last contact cold plate 12. The force-added rod support seat 4 is fixed to the lower side of the starting cold plate 11. The force-added balance rod 3 is rotatably connected to the force-added rod support seat 4. The two ends of the force-added balance rod 3 are rotatably connected with the action execution rod 5 and the control rod 2 respectively. The distance between the force-added rod support seat 4 and the action execution rod 5 is smaller than the distance between the force-added rod support seat 4 and the control rod 2.

[0025] like Fig. 1 As shown, when the thermal hammer 6 is not in contact with the last contact cold plate 12, the control rod 2 is parallel to the action execution rod 5, the force balance rod 3 is perpendicular to the control rod 2 and the action execution rod 5 respectively, and the first sliding bolt 13 and the second sliding bolt 14 are both located on the side of the elongated hole close to the force rod support seat 4; when the manipulator pulls the control rod 2 upward, the force balance rod 3 rotates clockwise, and the action execution rod 5 moves downward, so that the thermal hammer 6 abuts against the last contact cold plate 12; conversely, the control rod 2 is pressed down, and the thermal hammer 6 is separated from the last contact cold plate 12.

[0026] It can be known from the laws of physics that, with the connection point of the force-adding rod support seat 4 and the force-adding balance rod 3 as the boundary, the force-adding rod support seat 4 is closer to one side of the action execution rod 5, so that the length of the force-adding balance rod 3 on the side of the action execution rod 5 is smaller than the length of the force-adding balance rod 3 on the side of the control rod 2, so that the action execution rod 5 obtains a smaller lever arm. When the force applied by the manipulator on the force-adding balance rod 3 reaches the maximum, the force applied by the manipulator is amplified through the shorter lever arm on the upper side of the action execution rod 5 and finally acts on the heat-conducting hammer 6 and the last contact cold plate 12. The lever law is used to amplify the pressure between the heat-conducting hammer 6 and the last contact cold plate 12, so that the heat-conducting hammer 6 and the last contact cold plate 12 fit more stably and tightly, the heat conduction efficiency is higher, and the cooling speed is improved.

[0027] A copper rope 15 is connected to the starting cold plate 11 , and the other end of the copper rope 15 is connected to the action execution rod 5 , so that heat conduction is achieved between the starting cold plate 11 and the action execution rod 5 , thereby reducing the temperature of the final contact cold plate 12 .

[0028] The force-adding balance rod 3 is provided with a first through-hole, and the control rod 2 is provided with a second through-hole. A first sliding bolt 13 is inserted into the first and second through-holes and is screwed to a first nut. The force-adding balance rod 3 and the control rod 2 are disposed between the bolt head of the first sliding bolt 13 and the first nut. A third through-hole is provided on the force-adding balance rod 3, and a fourth through-hole is provided on the action execution rod 5. A second sliding bolt 14 is inserted into the third and fourth through-holes and is screwed to a second nut. The force-adding balance rod 3 and the action execution rod 5 are disposed between the bolt head of the second sliding bolt 14 and the second nut.

[0029] A gap is left between the first nut and the bolt head to facilitate relative rotation between the control rod 2 and the force-adding balance rod 3. Similarly, a gap is left between the second nut and its corresponding bolt head to facilitate relative rotation between the action execution rod 5 and the force-adding balance rod 3, making the rotation more stable and smooth, and reducing the resistance encountered by the manipulator.

[0030] The first through hole is an elongated through hole, and the first sliding bolt 13 can slide in the first through hole. The third through hole is an elongated through hole, and the second sliding bolt 14 can slide in the third through hole.

[0031] When the force balancing rod 3 rotates clockwise, the distance between the lower end of the control rod 2 and the upper end of the action execution rod 5 becomes farther. In order to avoid limitation among the control rod 2, the force rod support seat 4 and the force balancing rod 3, the first sliding bolt 13 connected to the bottom of the control rod 2 can slide along the long hole and move to the end away from the force rod support seat 4 to avoid bending of the control rod 2, so that the control rod 2 can move back and forth up and down in a straight line; similarly, the second sliding bolt 14 can slide along the long hole and move to the end away from the force rod support seat 4, so that the action execution rod 5 can move back and forth up and down in a straight line, so that the thermal hammer 6 can be accurately pressed into the contact seat 8.

[0032] The manipulator is provided with a knob. When the knob is rotated clockwise, the joystick 2 moves downward. When the knob is rotated counterclockwise, the joystick 2 moves upward. By manually designing the above-mentioned knob on the outside of the top plate 9, the control of the interior of the ultra-low temperature dry dilution refrigerator is achieved without destroying the vacuum environment inside the ultra-low temperature dry dilution refrigerator. Alternatively, the manipulator can also be automatically controlled by a computer. A temperature controller is provided in the last contact cold plate 12. After the temperature controller collects the temperature signal, it can obtain the internal temperature data. When the ultra-low temperature dry dilution refrigerator needs to be cooled, the computer controls the joystick 2 to move upward. After the cooling is completed, the computer controls the joystick 2 to move to the initial position.

[0033] The sleeve pipe 7 is installed on the top plate 9, the mechanical arm is installed on the sleeve pipe 7, the operating rod 2 is arranged in the sleeve pipe 7, the sealing ring is arranged on the top plate, the operating rod is arranged in the sealing ring, the sleeve pipe can lift the mechanical arm 1, avoids that the mechanical arm 1 directly contacts the top plate 9, and the reliability of the mechanical arm 1 is improved.

[0034] The contact seat 8 is arranged on the last contact cold plate 12, the heat conduction hammer 6 is inserted into the contact seat 8, the heat conduction hammer 6 is more stable, and shaking does not occur.

[0035] The conical groove 81 is formed on the upper side of the contact seat 8, the conical head 61 is formed on the heat conduction hammer 6, the conical head 61 is inserted into the conical groove 81, the conical surface of the heat conduction hammer 6 can be in contact with the conical groove, compared with the previous plane contact, the conical head 61 and the conical groove 81 are in contact through the conical surface, the contact area of the heat conduction hammer 6 and the contact seat 8 is enlarged, the heat conduction effect is better, and the contact is more stable and tight, due to the fact that the conical groove and the conical surface on the heat conduction hammer 6 are inclined planes, the heat conduction hammer is inserted into the conical groove and forms an outward expansion deformation trend on the conical groove, so that the contact force of the conical groove and the heat conduction hammer is more tight.

[0036] The operating rod 2 and the action execution rod 5 in the force rod type refrigeration machine execution control mechanism of the present application respectively include multiple groups, and lengths are different, the length can be replaced according to the required length, meanwhile, the force rod support seat 4 can be installed on the cold plate at other different positions of the ultralow-temperature dry dilution refrigeration machine, and heat conduction is conducted to different cold plates.

[0037] The heat conduction hammer 6 is detachably connected to the action execution rod 5, and other components in the refrigeration machine can also be installed at the end of the action execution rod 5, the to-be-installed component is inserted into the target position in the refrigeration machine through the insertion of the action execution rod 5, so that the application range of the action execution rod 5 is more extensive.

[0038] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A booster type refrigerator execution control mechanism for an ultra-low temperature dry dilution refrigerator, wherein the ultra-low temperature dry dilution refrigerator is provided with a top plate (9), a first cold plate (10), a starting cold plate (11) and a last contact cold plate (12) in sequence from the outside to the inside, characterized in that: The actuator control mechanism of the booster type refrigerator comprises a manipulator (1), a control rod (2), a booster balance rod (3), a booster rod support seat (4), an action execution rod (5) and a thermal hammer (6); the manipulator (1) is installed on the upper side of the top plate (9); the manipulator (1) pushes the control rod (2) and slides back and forth along the axis of the control rod (2); the control rod (2) is slidably arranged on the top plate (9) and the first cold plate (10); a thermal hammer (6) is installed at the lower end of the action execution rod (5); the thermal hammer (6) contacts the last contact cold plate (10); The plate (12) is abutted, the force balancing rod (3) is arranged between the starting cold plate (11) and the last contact cold plate (12), the force balancing rod (3) is fixed on the lower side of the starting cold plate (11), the force balancing rod (3) is rotatably connected to the force balancing rod support seat (4), and the two ends of the force balancing rod (3) are rotatably connected to the action execution rod (5) and the control rod (2), and the distance between the force balancing rod support seat (4) and the action execution rod (5) is smaller than the distance between the force balancing rod support seat (4) and the control rod (2); A knob is installed on the upper side of the manipulator (1). When the knob is rotated clockwise, the control rod (2) moves downward, and when the knob is rotated counterclockwise, the control rod (2) moves upward. A copper rope (15) is connected to the starting cold plate (11), and the other end of the copper rope (15) is connected to the action execution rod (5). The copper rope (15) can conduct heat.

2. The actuator control mechanism of the booster type refrigerator according to claim 1, characterized in that: The force-adding balance rod (3) is provided with a first through hole, the control rod (2) is provided with a second through hole, a first sliding bolt (13) is passed through the first through hole and the second through hole, the first sliding bolt (13) is screwed to a first nut, and the force-adding balance rod (3) and the control rod (2) are provided between the bolt head of the first sliding bolt (13) and the first nut.

3. The actuator control mechanism of the booster type refrigerator according to claim 2, characterized in that: The first through hole is an elongated through hole, and the first sliding bolt (13) can slide in the first through hole.

4. The actuator control mechanism of the booster type refrigerator according to claim 1, characterized in that: A third through hole is provided on the force-adding balance rod (3), a fourth through hole is provided on the action execution rod (5), a second sliding bolt (14) is passed through the third through hole and the fourth through hole, the second sliding bolt (14) is screwed to the second nut, and the force-adding balance rod (3) and the action execution rod (5) are provided between the bolt head of the second sliding bolt (14) and the second nut.

5. The actuator control mechanism of the booster type refrigerator according to claim 4, characterized in that: The third through hole is a long strip through hole, and the second sliding bolt (14) can slide in the third through hole.

6. The actuator control mechanism of the booster type refrigerator according to claim 1, characterized in that: A sleeve (7) is installed on the top plate (9), and the manipulator is installed on the upper side of the sleeve (7).

7. The actuator control mechanism of the booster type refrigerator according to claim 1, characterized in that: A contact seat (8) is installed on the last contact cold plate (12), and the thermal hammer (6) is inserted into the contact seat (8).

8. The actuator control mechanism of the booster type refrigerator according to claim 7, characterized in that: A conical groove (81) is formed on the upper side of the contact seat (8), and a conical head (61) is formed on the thermal hammer (6), and the conical head (61) is inserted into the conical groove (81).

9. The actuator control mechanism of the booster type refrigerator according to claim 1, characterized in that: The thermal hammer (6) is detachably connected to the action execution rod (5), and the action execution rod (5) can also insert the component to be installed into the target position in the refrigerator.

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