Ultralow-temperature efficient refrigerating device

Abstract

The invention relates to the technical field of ultralow-temperature refrigeration, in particular to an ultralow-temperature efficient refrigeration device. Comprising a box body, a working chamber, a high-temperature evaporation chamber, a low-temperature condensation chamber and a low-temperature evaporation chamber are arranged in the box body, an environment refrigeration module is installed in the box body, and a low-temperature evaporation pipe is fixedly connected in the box body; the mounting plate is fixedly connected to an electric sliding block of the electric sliding rail, the mounting plate is fixedly connected with a high-temperature evaporation pipe, and the second fixing frame is fixedly connected with a low-temperature condensation pipe; and the blocking plate is connected to the second fixing frame in a sliding manner. The high-temperature evaporation pipe and the low-temperature condensation pipe are separated, the environment refrigeration module and the high-temperature evaporation pipe are used for cooling the interior of the working cavity together, and when the low-temperature subsystem needs to cool the interior of the working cavity, the environment refrigeration module is closed, and the high-temperature evaporation pipe is used for cooling the low-temperature condensation pipe; the utilization rate of the high-temperature evaporation pipe is improved, and the overall refrigeration efficiency of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-low temperature refrigeration, and in particular to an ultra-low temperature high-efficiency refrigeration device. Background Art

[0002] Ultra-low temperature refrigeration devices are widely used in the fields of biological preservation, sensor cooling, material testing, etc., and usually use a cascade refrigeration system to achieve extremely low temperatures. The cascade refrigeration system includes two or more subsystems. Taking two subsystems as an example, they are a high-temperature subsystem and a low-temperature subsystem. Each subsystem includes at least one condenser and one evaporator, and is filled with different heat exchange media. Since the evaporation temperature of the heat exchange medium of the low-temperature subsystem is relatively low, if the low-temperature subsystem is in a higher temperature state, these media are prone to excessive expansion, thereby causing safety accidents such as leakage or explosion. Therefore, during use, the operating temperature of the low-temperature subsystem must be limited to a safe range through the high-temperature subsystem, that is, during the operation of the ultra-low temperature refrigeration device, the high-temperature subsystem needs to be started first, and the high-temperature subsystem will respectively control the working chamber and the area where the low-temperature subsystem is located. The temperature is lowered to reduce the temperature in the working chamber and the ambient temperature of the low-temperature subsystem. At this time, the low-temperature subsystem has not yet been connected to the working chamber. When the high-temperature subsystem reduces the temperature to a certain level, the cascade refrigeration system starts the low-temperature subsystem. At this time, the high-temperature subsystem no longer directly cools the working chamber, but only cools the condenser of the low-temperature subsystem. The low-temperature subsystem is connected to the working chamber and further cools it. In order to ensure the smooth progress of the above process, the high-temperature subsystem is usually equipped with at least two evaporators: one is used for overall cooling (that is, cooling the working chamber and the area where the low-temperature subsystem is located at the same time), and the other is directly connected to the condenser of the low-temperature subsystem, which is specifically responsible for cooling it. However, the two evaporators cannot be used at the same time during the cooling process, resulting in low utilization of the device and reducing the overall refrigeration efficiency of the high-temperature subsystem. Summary of the invention

[0003] In order to overcome the disadvantage that the existing high temperature subsystem is usually equipped with at least two evaporators that cannot be used simultaneously, resulting in low utilization rate of the device, the present invention provides an ultra-low temperature and high efficiency refrigeration device.

[0004] The technical solution is: an ultra-low temperature and high-efficiency refrigeration device, comprising: A box body, wherein a working chamber, a high-temperature evaporation chamber, a low-temperature condensation chamber and a low-temperature evaporation chamber are arranged in the box body, an environmental refrigeration module and a plurality of air guides are installed in the box body, and a first fixing frame, a second fixing frame, a low-temperature evaporation tube and an electric slide rail are fixedly connected in the box body; A mounting plate is fixedly connected to the electric slide block of the electric slide rail, the mounting plate is fixedly connected with a high-temperature evaporation tube, the second fixing frame is fixedly connected with a low-temperature condensation tube, the high-temperature evaporation tube is located in the high-temperature evaporation chamber, the low-temperature condensation tube is located in the low-temperature condensation chamber, and the low-temperature evaporation tube is located in the low-temperature evaporation chamber; A blocking plate is slidably connected to the second fixing frame, wherein a driving module is arranged in the second fixing frame, and the driving module is used to control the movement of the blocking plate, thereby controlling the connection or disconnection between the high-temperature evaporation chamber and the low-temperature condensation chamber; The heat conduction component is arranged on the high-temperature evaporation tube and is used to increase the heat exchange efficiency between the high-temperature evaporation tube and the low-temperature condensation tube.

[0005] As a further preferred solution, the heat conducting component includes: There are several heat conducting parts, all of which are arranged on the high-temperature evaporating tube. The heat conducting parts are fixed with spaced heat conducting plates. When the high-temperature evaporating tube is aligned with the low-temperature condensing tube, the heat conducting plates are in contact with the low-temperature condensing tube. The heat conducting plates are made of elastic material and are used to increase the contact area between the heat conducting plates and the low-temperature condensing tube. The heat conducting part is provided with symmetrically distributed guide mechanisms on one side close to the adjacent heat conducting plate. The guide mechanisms are used to control the deformation state of the adjacent heat conducting plates.

[0006] As a further preferred solution, the sum of the lengths of the two heat conducting plates in the vertical direction is equal to the circumference of the outer circle of the cross section of the low-temperature condenser tube.

[0007] As a further preferred embodiment, the guide mechanism includes: A sliding member, slidably connected to a side of the heat conducting member close to the adjacent heat conducting plate, the sliding member is rotatably connected to the adjacent heat conducting plate, the heat conducting member is fixedly connected to a pneumatic telescopic rod, the sliding member is rotatably connected to a first connecting member, and the telescopic end of the pneumatic telescopic rod is slidably and rotatably connected to the first connecting member; The extrusion assembly is arranged on the heat conduction plate and is used for further extruding the adjacent heat conduction plate so that the heat conduction plate and the low-temperature condensation tube are fitted together.

[0008] As a further preferred solution, a side of the sliding member close to the adjacent heat conduction plate is provided with an inclined surface, and the inclined surface of the sliding member is used to squeeze the heat conduction plate so that the heat conduction plate fits with the adjacent low-temperature condenser tube.

[0009] As a further preferred embodiment, the extrusion assembly includes: An extrusion plate is rotatably connected to the adjacent sliding member, and the extrusion plate is used to squeeze the heat conduction plate to deform the heat conduction plate; The second connecting member is rotatably connected to the adjacent extrusion plate, and the second connecting member is rotatably connected to the adjacent first connecting member.

[0010] As a further preferred solution, it also includes: The air guide mechanism is arranged on the mounting plate and is used to increase the heat exchange efficiency between the high-temperature evaporation tube and the outside air. The air guide mechanism includes: There are a plurality of rotating wheels, all of which are rotatably connected to the mounting plate, the number of the rotating wheels is equal to the number of the temperature conducting members and corresponds one to one, the rotating wheels are fixedly connected to adjacent temperature conducting members, and the temperature conducting members are rotatably connected to the high-temperature evaporation tubes; The driving assembly is arranged on the mounting plate and is used for driving all the rotating wheels to rotate together.

[0011] As a further preferred solution, the drive assembly includes: The electric push rod is fixedly connected to the mounting plate, the telescopic end of the electric push rod is fixedly connected to a sliding plate, and the rotating wheel is meshed with the sliding plate through a gear rack.

[0012] As a further preferred scheme, the mounting plate is fixed with first air guide strips distributed at intervals, the blocking plate is fixed with spring telescopic rods distributed at intervals, the telescopic ends of the spring telescopic rods are fixed with second air guide strips, the second air guide strips are slidably connected to the blocking plate, and the second fixing frame is used to squeeze the second air guide strip so that the second air guide strip is retracted into the blocking plate.

[0013] As a further preferred solution, there is at least one second air guide strip in the vertical plane where the first air guide strip is located.

[0014] The present invention has the following advantages: when cooling the entire device, the present invention separates the high-temperature evaporating tube from the low-temperature condensing tube, and uses the environmental refrigeration module and the high-temperature evaporating tube to cool the working chamber together. When the low-temperature subsystem is required to cool the working chamber, the environmental refrigeration module is turned off, the high-temperature evaporating tube is controlled to move to a position aligned with the low-temperature condensing tube, and the high-temperature evaporating tube is used to cool the low-temperature condensing tube, thereby improving the utilization rate of the high-temperature evaporating tube and increasing the overall refrigeration efficiency of the device.

[0015] The present invention controls the heat transfer plate to wrap around the pipes of the adjacent low-temperature condenser tubes, thereby increasing the contact area between the heat transfer plate and the low-temperature condenser tubes, thereby increasing the heat transfer efficiency from the low-temperature condenser tubes to the high-temperature evaporator tubes, and further increasing the efficiency of the high-temperature evaporator tubes in cooling the low-temperature condenser tubes.

[0016] The present invention controls the change of position and shape of the heat conduction plate when the high-temperature evaporation tube is used to cool the working chamber, thereby increasing the contact area between the airflow and the high-temperature evaporation tube, thereby increasing the efficiency of the high-temperature evaporation tube in cooling the working chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 box body, the air guide member and the second fixing frame of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the box body, air guide member and mounting plate of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the high-temperature evaporation chamber and the low-temperature condensation chamber of the present invention; Figure 5 is a cross-sectional view of the second fixing frame and the mounting plate of the present invention; Figure 6 An exploded view of the mounting plate, high-temperature evaporation tube and low-temperature condensation tube of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the temperature conducting member, the temperature conducting plate and the sliding member of the present invention; Figure 8 It is a cross-sectional view of the heat conducting member and the heat conducting plate of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the pneumatic telescopic rod, the first connecting member and the extrusion plate of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the mounting plate, the rotating wheel and the sliding plate of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of the mounting plate, the rotating wheel and the electric push rod of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the second fixing frame and the blocking plate of the present invention; Fig.13 It is a schematic diagram of the three-dimensional structure of the blocking plate and the second air guide strip of the present invention.

[0018] The markings in the accompanying drawings are: 1-box, 101-working chamber, 102-high temperature evaporation chamber, 103-low temperature condensation chamber, 104-low temperature evaporation chamber, 2-air guide, 3-first fixed frame, 4-second fixed frame, 5-low temperature evaporation tube, 6-electric slide rail, 7-mounting plate, 8-high temperature evaporation tube, 9-low temperature condensation tube, 10-sealing plate, 11-heat conduction member, 12-heat conduction plate, 13-sliding member, 14-pneumatic telescopic rod, 15-first connecting member, 16-extrusion plate, 17-second connecting member, 18-rotating wheel, 19-electric push rod, 20-sliding plate, 201-first air guide strip, 21-second air guide strip, 22-spring telescopic rod. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installation should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected by bolts, or indirectly connected through an intermediate medium, and should be understood according to actual use. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] An ultra-low temperature and high efficiency refrigeration device, reference Figure 1-Figure 6 , including: a box body 1, a working chamber 101, a high-temperature evaporation chamber 102, a low-temperature condensation chamber 103 and a low-temperature evaporation chamber 104 are arranged in the box body 1, an environmental refrigeration module and a plurality of air guides 2 are installed in the box body 1, a first fixing frame 3, a second fixing frame 4, a low-temperature evaporation tube 5 and an electric slide rail 6 are fixedly connected in the box body 1; a mounting plate 7 is fixedly connected to the electric slider of the electric slide rail 6, a high-temperature evaporation tube 8 is fixedly connected to the mounting plate 7, a low-temperature condensation tube 9 is fixedly connected to the second fixing frame 4, and a high-temperature evaporation tube 8 is fixedly connected to the electric slider of the electric slide rail 6. In the high-temperature evaporation chamber 102, the low-temperature condensation tube 9 is located in the low-temperature condensation chamber 103, and the low-temperature evaporation tube 5 is located in the low-temperature evaporation chamber 104; the sealing plate 10 is slidably connected to the second fixed frame 4, and a driving module is arranged in the second fixed frame 4. The driving module is used to control the movement of the sealing plate 10, thereby controlling the connection or disconnection of the high-temperature evaporation chamber 102 and the low-temperature condensation chamber 103; the heat conduction component is arranged on the high-temperature evaporation tube 8, and is used to increase the heat exchange efficiency between the high-temperature evaporation tube 8 and the low-temperature condensation tube 9.

[0021] As a further preferred solution, refer to Figure 5-Figure 9 The heat conduction component includes: a plurality of heat conduction members 11, all of which are arranged on the high-temperature evaporation tube 8. The heat conduction member 11 is fixed with spaced heat conduction plates 12. When the high-temperature evaporation tube 8 is aligned with the low-temperature condensation tube 9, the heat conduction plate 12 contacts the low-temperature condensation tube 9. The heat conduction plate 12 is made of elastic material and is used to increase the contact area between the heat conduction plate 12 and the low-temperature condensation tube 9. A symmetrically distributed guide mechanism is provided on one side of the heat conduction member 11 close to the adjacent heat conduction plate 12. The guide mechanism is used to control the deformation state of the adjacent heat conduction plate 12.

[0022] In the above scheme, in the present invention, two subsystems are installed in the box 1, the high-temperature evaporation tube 8 and the environmental refrigeration module are connected to the high-temperature subsystem, and the low-temperature evaporation tube 5 and the low-temperature condensation tube 9 are both connected to the low-temperature subsystem. The compressors, throttle valves and corresponding pipeline systems in the two subsystems all adopt existing conventional settings, which are not specifically shown in the figure. The specific arrangement of the high-temperature evaporation tube 8 and the low-temperature condensation tube 9 is as follows Figure 5 and Figure 6As shown, when the high-temperature evaporation tube 8 moves to a position aligned with the low-temperature condensation tube 9, the internal pipes of the two are staggered with each other; the working chamber 101, the high-temperature evaporation chamber 102, the low-temperature condensation chamber 103 and the low-temperature evaporation chamber 104 are initially separated from each other, and the high-temperature evaporation chamber 102 and the low-temperature evaporation chamber 104 are respectively connected to the working chamber 101 through adjacent air guides 2. The air guide 2 is an existing electric device, including basic components such as an electric fan, an exhaust duct and an electric control valve, which is used to control the flow direction of the air in the working chamber 101, so that the air in the working chamber 101 actively moves to the high temperature evaporation chamber 102. The air flows in the high-temperature evaporation chamber 102 or the low-temperature evaporation chamber 104, and has a self-sealing function when not working. The environmental refrigeration module in the box body 1 is used to cool down the interior of the device as a whole. The environmental refrigeration module adopts the structure of the existing evaporator and is not specifically shown in the figure; the driving module on the second fixed frame 4 can be an electric push rod or an electric control slide rail; the air guide 2, the electric slide rail 6, the driving module, the guide mechanism, the high-temperature subsystem and the low-temperature subsystem are all electrically connected to the control terminal, and a temperature control module for monitoring the temperature is also provided in the box body 1, and the temperature control module is electrically connected to the control terminal.

[0023] The working process is as follows: when the staff needs to use the device for cooling, the high temperature subsystem is started first. The high temperature subsystem cools down the working chamber 101, the high temperature evaporation chamber 102, the low temperature condensation chamber 103 and the low temperature evaporation chamber 104 through the environmental cooling module and the high temperature evaporation tube 8. The control terminal simultaneously starts the air guide 2 connected to the high temperature evaporation chamber 102. The air guide 2 introduces the air in the working chamber 101 into the high temperature evaporation chamber 102, so that the airflow contacts the high temperature evaporation tube 8, thereby using the high temperature evaporation tube 8 to cool down the air in the working chamber 101, thereby increasing the utilization rate of the device. At this time, since the sealing plate 10 separates the high temperature evaporation chamber 102 and the low temperature condensation chamber 103, the air in the working chamber 101 will not directly enter the low temperature condensation chamber 103, and will not affect the heat exchange medium in the low temperature condensation tube 9.

[0024] When the temperature control module detects that the temperature in the working chamber 101 drops to an appropriate temperature, that is, the gas at the current temperature will not cause excessive expansion of the heat exchange medium in the low-temperature subsystem, the control terminal turns off the environmental refrigeration module and the air guide 2 connected to the high-temperature evaporation chamber 102, and starts the air guide 2 connected to the low-temperature evaporation chamber 104. The air guide 2 transports the gas in the working chamber 101 to the low-temperature evaporation chamber 104, so that the gas contacts the low-temperature evaporation tube 5 in the low-temperature evaporation chamber 104 and performs heat exchange. The control terminal controls the sealing plate 10 to retract into the second fixed frame 4 through the driving module. The sealing plate 10 no longer separates the high-temperature evaporation chamber 102 and the low-temperature condensation chamber 103. The control terminal starts the electric slide rail 6. The electric slider on the electric slide rail 6 drives the mounting plate 7 to slide downward. The mounting plate 7 drives The high-temperature evaporation tube 8, the heat conducting member 11 and the heat conducting plate 12 thereon slide downward together, and the pipe on the high-temperature evaporation tube 8 is gradually inserted into the gap between the pipes on the low-temperature condensation tube 9. When the high-temperature evaporation tube 8 is aligned with the low-temperature condensation tube 9 (when the two are located in the same plane), the control terminal closes the electric slide rail 6, and the low-temperature condensation tube 9 contacts the adjacent heat conducting plate 12. The control terminal controls all the guide mechanisms to drive the adjacent heat conducting plate 12 to deform, so as to increase the contact area between the heat conducting plate 12 and the low-temperature condensation tube 9. The high-temperature evaporation tube 8 and the low-temperature condensation tube 9 perform heat exchange through the heat conducting member 11 and the heat conducting plate 12. At this time, the control terminal starts the low-temperature subsystem, and the low-temperature subsystem works to reduce the temperature in the working chamber 101 through the low-temperature evaporation tube 5, and dissipate heat to the low-temperature condensation tube 9 through the high-temperature evaporation tube 8.

[0025] When the temperature in the working chamber 101 reaches the expected cooling temperature, the control terminal performs heat preservation treatment on the working chamber 101 through the high-temperature evaporation tube 8 , the low-temperature condensation tube 9 and the low-temperature evaporation tube 5 .

[0026] When the device stops refrigeration in a short period of time, the control terminal shuts down the low-temperature subsystem and drives all the heat conduction plates 12 to deform to the initial state through all the guide mechanisms. The electric slide rail 6 drives the mounting plate 7 and the high-temperature evaporation tube 8 to reset, and controls the sealing plate 10 to reset at the same time, separating the high-temperature evaporation chamber 102 and the low-temperature condensation chamber 103. Then the control terminal uses the environmental refrigeration module and the high-temperature evaporation tube 8 of the high-temperature subsystem to insulate the position of the low-temperature subsystem in the low-temperature condensation chamber 103 and the low-temperature evaporation chamber 104, so as to prevent the temperature in the low-temperature condensation chamber 103 and the low-temperature evaporation chamber 104 from rising and causing excessive expansion of the heat exchange medium in the low-temperature subsystem.

[0027] When the device stops refrigeration for a long time, the staff needs to recover the heat exchange medium in the low-temperature subsystem into a dedicated high-pressure storage container, and then the staff completely shuts down the high-temperature subsystem through the control terminal.

[0028] As a further preferred solution, refer to Fig. 9The sum of the lengths of the two heat conducting plates 12 in the vertical direction is equal to the circumference of the outer circle of the cross section of the low-temperature condensation tube 9 .

[0029] As a further preferred solution, refer to Figure 5-Figure 9 The guiding mechanism includes: a sliding member 13, which is slidably connected to a side of the temperature conducting member 11 close to the adjacent temperature conducting plate 12, the sliding member 13 is rotatably connected to the adjacent temperature conducting plate 12, the temperature conducting member 11 is fixedly connected with a pneumatic telescopic rod 14, the sliding member 13 is rotatably connected with a first connecting member 15, and the telescopic end of the pneumatic telescopic rod 14 is slidably and rotatably connected to the first connecting member 15; an extrusion component is arranged on the adjacent temperature conducting plate 12, and is used to further extrude the adjacent temperature conducting plate 12 so that the temperature conducting plate 12 fits with the low-temperature condensation tube 9.

[0030] As a further preferred solution, refer to Figure 7-Figure 9 The sliding member 13 is provided with an inclined surface on one side close to the adjacent heat conducting plate 12 . The inclined surface of the sliding member 13 is used to squeeze the heat conducting plate 12 so that the heat conducting plate 12 fits with the adjacent low-temperature condensing tube 9 .

[0031] As a further preferred solution, refer to Figure 7-Figure 9 The extrusion assembly includes: an extrusion plate 16, which is rotatably connected to the adjacent sliding member 13, and the extrusion plate 16 is used to extrude the heat conduction plate 12 to deform the heat conduction plate 12; a second connecting member 17, which is rotatably connected to the adjacent extrusion plate 16, and the second connecting member 17 is rotatably connected to the adjacent first connecting member 15.

[0032] In the above scheme, the heat conduction plate 12 is made of a low-temperature resistant elastic material (low-temperature resistant alloy material, etc.), and the height of the two heat conduction plates 12 is equal to the circumference of the outer circle of the cross section of the low-temperature condenser 9. By squeezing two adjacent heat conduction plates 12 and deforming them, the two adjacent heat conduction plates 12 can be completely wrapped around the outside of the adjacent low-temperature condenser 9, thereby increasing the contact area between the heat conduction plate 12 and the low-temperature condenser 9, thereby increasing the heat transfer efficiency between the two, and being used to squeeze the heat conduction plate 12 and the low-temperature condenser 9 to keep them in contact; the pneumatic telescopic rod 14 is connected to an external air pump, and the external air pump is electrically connected to the control terminal.

[0033] The working process is as follows: taking one of the temperature conducting parts 11 and its components as an example, when the high-temperature evaporation tube 8 is aligned with the low-temperature condensation tube 9, the two temperature conducting plates 12 are in contact with the low-temperature condensation tube 9, and at this time, the control terminal controls the air pump to supply air to all the pneumatic telescopic rods 14, and the telescopic end of the pneumatic telescopic rod 14 drives the first connecting member 15 and the second connecting member 17 to extend, and the first connecting member 15 and the second connecting member 17 drive the extrusion plate 16 to swing toward one side of the adjacent temperature conducting plate 12 during the movement, until the extrusion plate 16 contacts the temperature conducting plate 12, and at this time, the extrusion plate 16 begins to squeeze the temperature conducting plate 12 to bend and deform, and the temperature conducting plate 12 bends and accumulates force, and the telescopic end of the pneumatic telescopic rod 14 simultaneously drives the sliding member 13 and the extrusion plate 16 to move horizontally, and the sliding member 13 synchronously squeezes the adjacent side of the temperature conducting plate 12 to deform toward the low-temperature condensation tube 9, until the extrusion plate 16 and the sliding member 13 squeeze the temperature conducting plate 12 to a state of complete fit with the low-temperature condensation tube 9 (such as Fig. 9 As shown in the figure, the telescopic end of the pneumatic telescopic rod 14 cannot be extended further, and the first connecting piece 15, the sliding piece 13, the extrusion plate 16 and the second connecting piece 17 stop moving. When all the pneumatic telescopic rods 14 are extended to the limit position, the control terminal turns off the air pump. At this time, all the heat conducting plates 12 are in contact with the adjacent low-temperature condensing tubes 9, and the temperature in the low-temperature condensing tubes 9 is transferred to the high-temperature evaporating tubes 8 through the heat conducting plates 12, the sliding piece 13, the extrusion plate 16 and the heat conducting piece 11, thereby improving the temperature transfer efficiency between the low-temperature condensing tubes 9 and the high-temperature evaporating tubes 8. When the control terminal is ready to control the mounting plate 7 and the high-temperature evaporating tubes 8 to move upward and reset, the control terminal controls the air pump to extract the gas in all the pneumatic telescopic rods 14, and the first connecting piece 15, the sliding piece 13, the extrusion plate 16 and the second connecting piece 17 are driven by the telescopic end of the pneumatic telescopic rod 14 to move and reset, and the heat conducting plate 12 is reset under the action of its own elastic force.

[0034] In the above solution, the temperature conducting member 11 and the high temperature evaporation tube 8 are considered to be fixedly connected, while in the following solution, the temperature conducting member 11 and the high temperature evaporation tube 8 are considered to be rotationally connected.

[0035] As a further preferred solution, refer to Figure 6 , Figure 7 , Fig.10 and Fig.11 , and also includes: an air guide mechanism, which is arranged on the mounting plate 7, and is used to increase the heat exchange efficiency between the high-temperature evaporation tube 8 and the outside air. The air guide mechanism includes: a plurality of rotating wheels 18, which are all rotatably connected to the mounting plate 7. The number of rotating wheels 18 is equal to the number of temperature conducting members 11 and corresponds one to one. The rotating wheels 18 are fixedly connected to adjacent temperature conducting members 11, and the temperature conducting members 11 are rotatably connected to the high-temperature evaporation tube 8; a driving component, which is arranged on the mounting plate 7, and is used to drive all the rotating wheels 18 to rotate together.

[0036] As a further preferred solution, refer to Fig.10 and Fig.11 The driving assembly includes: an electric push rod 19, which is fixed to the mounting plate 7, a sliding plate 20 is fixed to the telescopic end of the electric push rod 19, and a rotating wheel 18 is meshed with the sliding plate 20 through a gear rack.

[0037] As a further preferred solution, refer to Figure 5 , Fig.12 and Fig.13 The mounting plate 7 is fixedly connected with first air guide strips 201 which are distributed at intervals, the blocking plate 10 is fixedly connected with spring telescopic rods 22 which are distributed at intervals, the telescopic end of the spring telescopic rod 22 is fixedly connected with a second air guide strip 21, the second air guide strip 21 is slidably connected with the blocking plate 10, and the second fixing frame 4 is used to squeeze the second air guide strip 21 so that the second air guide strip 21 retracts into the blocking plate 10.

[0038] As a further preferred solution, refer to Figure 5 , there is at least one second air guide strip 21 in the vertical plane where the first air guide strip 201 is located.

[0039] In the above scheme, the initial position of the heat conducting member 11 relative to the high temperature evaporation tube 8 is as follows: Figure 8 As shown, at this time, the two heat conducting plates 12 on the heat conducting member 11 are respectively located on the left and right sides thereof; a gear is fixedly connected to the outer side of the rotating wheel 18, and the first air guide strip 201 and the second air guide strip 21 are both provided with curved surfaces, and the curved surface on the first air guide strip 201 and the curved surface on the second air guide strip 21 are used to guide the wind in the high-temperature evaporation chamber 102 to the middle part of the high-temperature evaporation tube 8, thereby increasing the heat exchange effect between the high-temperature evaporation tube 8 and the air; all the first air guide strips 201 and all the second air guide strips 21 correspond one by one, so that the wind guided to the middle part of the high-temperature evaporation tube 8 by the two is always in a symmetrical state, thereby causing part of the wind to offset in the middle part of the high-temperature evaporation tube 8, increasing the contact area of ​​the wind in the middle part of the high-temperature evaporation tube 8, thereby improving the heat dissipation effect of the wind on the high-temperature evaporation tube 8; the electric push rod 19 is electrically connected to the control terminal.

[0040] The working process is as follows: when the staff uses the high-temperature evaporation tube 8 to cool down the working chamber 101, the air guide 2 at the high-temperature evaporation chamber 102 is in working state, and the air guide 2 guides the air in the working chamber 101 to the high-temperature evaporation tube 8, and guides the cooled air at the high-temperature evaporation tube 8 back to the working chamber 101. Figure 7 For example, suppose that the airflow passing through the high-temperature evaporation tube 8 flows from right to left (with Figure 7As a reference), the control terminal first controls the telescopic end of the electric push rod 19 to extend to the right, and the telescopic end of the electric push rod 19 drives the sliding plate 20 to move together, and the sliding plate 20 drives the adjacent rotating wheel 18 to rotate through the rack thereon, and the rotating wheel 18 drives the temperature conducting member 11 to rotate. After the temperature conducting member 11 rotates 90°, the control terminal closes the electric push rod 19. At this time, the two temperature conducting plates 12 on the temperature conducting member 11 are respectively located on the upper and lower sides thereof. Taking one of the temperature conducting members 11 and the adjacent components as an example: the control terminal supplies gas to the pneumatic telescopic rod 14 on the upper right side of the temperature conducting member 11 through an air pump, and the telescopic end of the pneumatic telescopic rod 14 on the right side drives the right part of the upper temperature conducting plate 12 to bend upward according to the same principle as mentioned above, and the control terminal extracts gas from the pneumatic telescopic rod 14 on the upper left side of the temperature conducting member 11 through an air pump, and the telescopic end of the pneumatic telescopic rod 14 on the upper left side drives the upper temperature conducting plate 12 to bend upward according to the same principle as mentioned above The left part of the plate 12 bends downward, so that the heat conducting plate 12 bends into a horizontal ∫ shape, and then the control terminal extracts the gas in the pneumatic telescopic rod 14 at the lower right side of the heat conducting member 11 through the air pump, and controls the right side of the heat conducting plate 12 on the lower side of the heat conducting member 11 to bend upward, and the control terminal supplies gas to the pneumatic telescopic rod 14 at the lower left side of the heat conducting member 11 through the air pump, and the left side of the lower heat conducting plate 12 bends downward. At this time, all the heat conducting plates 12 work together to guide the air, causing the air to pass through the gap between the two horizontal heat conducting members 11 from the outside of the high-temperature evaporation tube 8 and then enter the middle part of the high-temperature evaporation tube 8, thereby increasing the contact area between the air and the heat conducting member 11, thereby improving the cooling effect on the air. The first air guide strip 201 and the second air guide strip 21 are also used to guide the wind in the high-temperature evaporation chamber 102 to the middle part of the high-temperature evaporation tube 8, further increasing the probability of air entering the middle part of the high-temperature evaporation tube 8.

[0041] When the high-temperature evaporation tube 8 is no longer used to cool the working chamber 101, the control terminal controls the telescopic end of the electric push rod 19 to drive the sliding plate 20 to move and reset, and the sliding plate 20 drives all the rotating wheels 18 and all the temperature conducting parts 11 to rotate and reset. The control terminal simultaneously controls all the pneumatic telescopic rods 14 through the air pump to drive the adjacent temperature conducting plates 12 to reset. When the control terminal controls the sealing plate 10 to retract into the second fixed frame 4, the inclined surface of the second air guide strip 21 is squeezed back into the sealing plate 10 by the second fixed frame 4 when in contact with the second fixed frame 4. The spring telescopic rod 22 is compressed and stored, and the second air guide strip 21 will not hinder the sealing plate 10 from retracting into the second fixed frame 4.

[0042] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the scope of protection of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. An ultra-low temperature high-efficiency refrigeration device, characterized in that: Included are: A box body (1), wherein a working chamber (101), a high-temperature evaporation chamber (102), a low-temperature condensation chamber (103) and a low-temperature evaporation chamber (104) are arranged in the box body (1), an environmental refrigeration module and a plurality of air guides (2) are installed in the box body (1), and a first fixing frame (3), a second fixing frame (4), a low-temperature evaporation tube (5) and an electric slide rail (6) are fixedly connected in the box body (1); a mounting plate (7) fixedly connected to the electric slide block of the electric slide rail (6); a high-temperature evaporation tube (8) fixedly connected to the mounting plate (7); a low-temperature condensation tube (9) fixedly connected to the second fixing frame (4); the high-temperature evaporation tube (8) being located in the high-temperature evaporation chamber (102); the low-temperature condensation tube (9) being located in the low-temperature condensation chamber (103); and the low-temperature evaporation tube (5) being located in the low-temperature evaporation chamber (104); A blocking plate (10) is slidably connected to the second fixing frame (4), wherein a driving module is arranged in the second fixing frame (4), and the driving module is used to control the movement of the blocking plate (10), thereby controlling the connection or disconnection between the high-temperature evaporation chamber (102) and the low-temperature condensation chamber (103); A heat conduction component is arranged on the high-temperature evaporation tube (8) and is used to increase the heat exchange efficiency between the high-temperature evaporation tube (8) and the low-temperature condensation tube (9).

2. The ultra-low temperature high-efficiency refrigeration device according to claim 1, characterized in that: The heat conducting component comprises: A plurality of heat conducting members (11) are provided, each of which is arranged on the high-temperature evaporating tube (8); the heat conducting member (11) is fixedly connected with heat conducting plates (12) which are arranged at intervals; when the high-temperature evaporating tube (8) is aligned with the low-temperature condensing tube (9), the heat conducting plates (12) are in contact with the low-temperature condensing tube (9); the heat conducting plates (12) are made of elastic material and are used to increase the contact area between the heat conducting plates (12) and the low-temperature condensing tube (9); a symmetrically distributed guide mechanism is provided on one side of the heat conducting member (11) close to an adjacent heat conducting plate (12); the guide mechanism is used to control the deformation state of the adjacent heat conducting plate (12).

3. The ultra-low temperature high-efficiency refrigeration device according to claim 2, characterized in that: The sum of the lengths of the two heat conducting plates (12) in the vertical direction is equal to the circumference of the outer circle of the cross section of the low-temperature condensing tube (9).

4. The ultra-low temperature high-efficiency refrigeration device according to claim 2, characterized in that: The guiding mechanism comprises: A sliding member (13) is slidably connected to a side of the heat conducting member (11) close to the adjacent heat conducting plate (12); the sliding member (13) is rotationally connected to the adjacent heat conducting plate (12); the heat conducting member (11) is fixedly connected to a pneumatic telescopic rod (14); the sliding member (13) is rotationally connected to a first connecting member (15); and the telescopic end of the pneumatic telescopic rod (14) is slidably and rotationally connected to the first connecting member (15); An extrusion assembly is arranged on the temperature conducting plate (12) and is used for further extruding the adjacent temperature conducting plate (12) so that the temperature conducting plate (12) and the low-temperature condensing tube (9) are fitted together.

5. The ultra-low temperature high-efficiency refrigeration device according to claim 4, characterized in that: The sliding member (13) is provided with an inclined surface on one side close to the adjacent heat conducting plate (12), and the inclined surface of the sliding member (13) is used to press the heat conducting plate (12) so that the heat conducting plate (12) and the adjacent low-temperature condensing tube (9) are fitted together.

6. The ultra-low temperature high-efficiency refrigeration device according to claim 5, characterized in that: The extrusion assembly comprises: an extrusion plate (16) rotatably connected to the adjacent sliding member (13), the extrusion plate (16) being used to extrude the heat conduction plate (12) to deform the heat conduction plate (12); The second connecting member (17) is rotatably connected to the adjacent extrusion plate (16), and the second connecting member (17) is rotatably connected to the adjacent first connecting member (15).

7. The ultra-low temperature high-efficiency refrigeration device according to claim 4, characterized in that: Also included are: An air guide mechanism is arranged on the mounting plate (7) and is used to increase the heat exchange efficiency between the high-temperature evaporation tube (8) and the outside air. The air guide mechanism comprises: There are a plurality of rotating wheels (18), all of which are rotatably connected to the mounting plate (7), the number of the rotating wheels (18) being equal to and corresponding to the number of the temperature conducting components (11), the rotating wheels (18) being fixedly connected to adjacent temperature conducting components (11), and the temperature conducting components (11) being rotatably connected to the high-temperature evaporation tubes (8); A driving assembly is arranged on the mounting plate (7) and is used to drive all the rotating wheels (18) to rotate together.

8. The ultra-low temperature high-efficiency refrigeration device according to claim 7, characterized in that: The drive assembly comprises: The electric push rod (19) is fixedly connected to the mounting plate (7), the telescopic end of the electric push rod (19) is fixedly connected to a sliding plate (20), and the rotating wheel (18) is meshed with the sliding plate (20) via a gear rack.

9. The ultra-low temperature high-efficiency refrigeration device according to claim 8, characterized in that: The mounting plate (7) is fixedly connected to first air guide strips (201) that are distributed at intervals, the blocking plate (10) is fixedly connected to spring telescopic rods (22) that are distributed at intervals, the telescopic ends of the spring telescopic rods (22) are fixedly connected to second air guide strips (21), the second air guide strips (21) are slidably connected to the blocking plate (10), and the second fixing frame (4) is used to squeeze the second air guide strips (21) so that the second air guide strips (21) are retracted into the blocking plate (10).

10. The ultra-low temperature high-efficiency refrigeration device according to claim 9, characterized in that: There is at least one second air guide strip (21) in the vertical plane where the first air guide strip (201) is located.

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