A defrosting device
By combining mechanical crushing with air knife-assisted physical defrosting, the potential hazards of alcohol defrosting to samples and equipment are eliminated, achieving efficient, safe, and thorough defrosting while avoiding the use of chemical substances.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGYA HOSPITAL CENT SOUTH UNIV
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-03
AI Technical Summary
Existing technologies using alcohol for defrosting damage samples, pose safety hazards, may affect the chemical properties of samples, corrode equipment materials, and leave residues that are difficult to resolve.
The defrosting process employs a combination of mechanical crushing with a roller brush and airflow-assisted defrosting with an air knife. The rotating roller brush removes frost, while the air knife blows away residue to prevent secondary condensation, achieving thorough defrosting through physical methods.
It improves defrosting efficiency, reduces labor costs, ensures safety, does not pollute the environment or damage samples, and avoids the use of chemicals.
Smart Images
Figure CN224455084U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of storage device technology, and specifically relates to a defrosting device. Background Technology
[0002] Cryopreservation boxes and cryovials are commonly used containers for cryogenic storage of biological samples, primarily for the preservation of tissue samples, cells, DNA, RNA, etc. Cryovials usually have a QR code on the bottom for easy sample identification and recording. Cryopreservation boxes typically have internal compartments to hold multiple cryovials, facilitating sample classification and management. The exterior of cryopreservation boxes usually has a QR code for easy sample identification and recording. The combined use of cryovials and cryopreservation boxes effectively organizes and manages biological samples, ensuring their stability and safety during cryogenic storage.
[0003] Biological samples typically contain a certain amount of water. When the sample is placed in a low-temperature environment, the water will freeze to form ice crystals, which is the main reason for frost formation. When the humidity inside the storage device is high, moisture in the air may also condense and freeze on the sample surface to form frost. If the temperature of the storage device is unstable, frequent temperature fluctuations may cause the water on the sample surface to freeze and thaw repeatedly, increasing the likelihood of frost formation. In addition, poor sealing of the storage device may allow external moisture to enter the device, increasing the risk of frost formation. Defrosting cryovials / boxes is an important maintenance step, mainly for the following reasons: (1) Maintaining temperature stability: Frost inside the cryovials will affect the uniform distribution of temperature, resulting in insufficient temperature in some areas, thus affecting the preservation effect of the sample. Defrosting can ensure temperature stability and uniformity; (2) Improving equipment efficiency: Frost layers will increase the thermal resistance of the equipment, leading to a decrease in refrigeration efficiency and increased energy consumption. Regular defrosting can improve the cooling efficiency of the equipment and reduce operating costs; (3) Prevent equipment damage: Excessive frost may overload the equipment components, increase wear, and may even cause equipment failure. Defrosting can extend the service life of the equipment; (4) Ensure sample safety: Frost may cause poor sealing of cryovials, increasing the risk of sample contamination. Defrosting helps maintain a good seal and ensures the safety of the sample; (5) Ensure that the information markings of cryovials / boxes are clearly identifiable: Frost covering the QR code markings on the outside of cryovials and boxes will hinder the scanning system from recognizing the QR code. Regular defrosting can ensure the normal operation of cryovials, protect the stored samples, and extend the service life of the equipment.
[0004] Current technology typically involves spraying a special reagent, such as alcohol, onto the bottom of the cryovial. Alcohol has a freezing point much lower than water; commonly used medical alcohol typically has a freezing point of around -114°C. When the alcohol is sprayed onto the frosted surface, it quickly mixes with the water in the frost, lowering the freezing point of water and causing the frost to melt into a liquid at a lower temperature, thus achieving the defrosting effect. However, spraying alcohol for defrosting has the following disadvantages: (1) Safety hazards: Alcohol is a flammable and volatile liquid. If it encounters open flames or static electricity during use, it can easily cause fires or even explosions. Especially in environments such as laboratories where there are various chemical reagents and electrical equipment, extra care must be taken to ensure safety when using alcohol for defrosting; (2) Potential impact on samples: If alcohol penetrates into the cryopreservation box or cryopreservation tube, it may affect the samples inside, such as changing the chemical properties of the samples or affecting the activity of biological samples. Even if a small amount of alcohol evaporates into the tube, it may damage some sensitive samples; (3) Corrosiveness: High concentrations of alcohol may be corrosive to certain plastics, rubbers and other materials. Long-term use may damage the cryopreservation box or cryopreservation tube, affecting its sealing and service life; (4) Residue issues: After alcohol evaporates, some impurities or residues may be left behind, which need to be wiped clean. Otherwise, it may interfere with subsequent experiments or sample preservation. Moreover, if the wiping is not thorough, the residual alcohol may also cause potential harm to the samples. Utility Model Content
[0005] In view of the existing technical problems, the present invention aims to provide a defrosting device that can solve the technical problem that the use of alcohol for defrosting in the prior art will damage the sample.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A defrosting device is characterized by the following structural features: it includes a housing, a cover disposed on the top of the housing, and a defrosting mechanism and a receiving cavity disposed within the housing, the receiving cavity being used to hold a cryogenic storage box; the defrosting mechanism includes a mounting base disposed within the housing, and a first drive mechanism, a roller brush, and a fan disposed on the mounting base, the output end of the first drive mechanism being connected to the rotating shaft of the roller brush, the roller brush being disposed at the bottom of the receiving cavity; an air knife is provided on the left and / or right sides of the roller brush, the air outlet of the air knife being disposed upward along the length direction of the roller brush, and the air knife being connected to the air outlet of the fan.
[0008] In use, the defrosting device of this application involves placing the cryovial in the receiving cavity, securing it with the lid, and having the roller brush abut against the bottom of the cryovial. The first drive mechanism and fan are activated, causing the roller brush to rotate under the drive of the first drive mechanism. As the roller brush rotates, it continuously breaks or peels away the frost on the bottom of the cryovial using mechanical force. Simultaneously, an air knife blows air onto the bottom of the cryovial, blowing off the ice particles brushed off, preventing residue or re-adhesion, thus reducing the need for repeated roller brush operations. For areas difficult for the roller brush to reach, such as crevices and corners of the cryovial, the airflow from the air knife can penetrate these areas to clean up any residue, improving defrosting thoroughness. Furthermore, by blowing air onto the bottom of the cryovial, the ambient temperature airflow accelerates the melting of frost through heat transfer, reducing the adhesion between the frost and the bottom of the cryovial, making it easier for the roller brush to remove the frost. This defrosting device, through the mechanical breaking action of the roller brush and the airflow assistance generated by the air knife, significantly improves defrosting efficiency and thoroughness, while also saving labor costs. This invention's defrosting device uses an air knife to blow air through the cryovial, quickly removing residual moisture from the bottom of the cryovial, reducing local humidity, and inhibiting secondary condensation of frost. This defrosting device employs physical defrosting, does not involve chemical substances, will not pollute the environment, and will not release harmful gases. It is relatively safe to use and will not harm the human body or the samples.
[0009] Preferably, the housing is equipped with a support and drive assembly, which includes a base plate along the bottom wall of the housing, upright plates on both sides of the base plate along its length, a support plate between the two upright plates, and a second drive mechanism. The support plate has a guide rail along its length. The mounting base has a slider at its bottom, which is slidably connected to the guide rail. The output end of the second drive mechanism is connected to the mounting base, and under the drive of the second drive mechanism, the mounting base moves along the length of the guide rail. By setting the second drive mechanism, the mounting base, the roller brush, and the air knife located on the mounting base can move simultaneously along the length of the rail. This allows the roller brush to rotate while also moving back and forth at the bottom of the cryogenic container, enabling the roller brush to contact the entire bottom surface of the cryogenic container, further improving defrosting efficiency.
[0010] Specifically, the support plate consists of two parallel plates positioned below the two upright plates, with the roller brush positioned between them. The mounting base has two sliders at its bottom, each slider being slidably connected to a guide rail on one of the support plates. By using two support plates, and with the guide rails on the two support plates slidably connected to the two sliders at the bottom of the mounting base, the stability of the mounting base's movement is improved.
[0011] Preferably, the housing is equipped with a shielding curtain, and each of the two uprights has two support rods along its height direction, with the support rods also extending along the width direction of the uprights. The shielding curtain passes through the gap between the support rods and the uprights, and its two ends along its length are fixed to both sides of the roller brush. The mounting base is located within the space enclosed by the shielding curtain. When the roller brush moves along the length of the guide rail, the shielding curtain moves with the roller brush. When no cryopreservation box is placed in the receiving cavity, the shielding curtain can cover the opening of the receiving cavity, thereby protecting the internal structure of the device and improving the overall aesthetics of the product.
[0012] Specifically, the upper support rod is parallel to the air outlet of the air knife and both are at the same height, while the lower support rod is located below the bottom of the mounting base; the width of the shielding curtain is greater than or equal to the length of the roller of the brush, and the width of the shielding curtain is less than the distance between the two support plates.
[0013] Preferably, the second drive mechanism includes a second drive motor and a gear disposed on the output end of the second drive motor, the second drive motor being mounted on the mounting base; the side wall of the support plate is provided with a rack along its length, the rack meshing with the gear. By setting the gear and rack, the rotation of the output end of the second drive motor is converted into linear motion of the mounting base along the guide rail.
[0014] Specifically, a water collection box is provided on the base plate, located below the support plate; an opening is provided on the side wall of the housing corresponding to the location of the water collection box, allowing the water collection box to be inserted into or removed from the base plate. By providing the water collection box, frost / water falling from the cryogenic container can be collected, improving the maintainability of the device.
[0015] Preferably, the support drive assembly is equipped with a first detection switch for detecting the cryopreservation box inside the receiving cavity, and a start button is provided on the top of the box. The support plate has second detection switches at both ends along its length for detecting the movement position of the slider. The first detection switch, start button, second detection switches, first drive mechanism, fan, and second drive mechanism are all electrically connected to the control system. When the first detection switch detects that a cryopreservation box is placed inside the receiving cavity and the start button is pressed, the control system can control the activation of the first drive mechanism, fan, and second drive mechanism. When the second detection switch touches the slider, the control system controls the movement direction of the second drive mechanism, thereby allowing the mounting base to move back and forth along the guide rail.
[0016] Preferably, the receiving cavity has a cuboid structure, and at least two side walls of the cuboid are provided with multiple support columns extending into the receiving cavity. The roller brush is disposed at the bottom of the support columns. By providing support columns, the cryopreservation box is supported, and the gaps between the support columns ensure that the bottom of the cryopreservation box is exposed so that it can contact the roller brush.
[0017] Preferably, the first drive mechanism includes a first drive motor and a timing belt, and the output end of the first drive motor is rotatably connected to the rotating shaft of the roller brush via the timing belt.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] 1. The defrosting device of this utility model can greatly improve defrosting efficiency and thoroughness by setting up a roller brush for mechanical crushing and airflow assistance generated by an air knife, while saving labor costs.
[0020] 2. The defrosting device of this utility model can quickly remove residual moisture at the bottom of the cryopreservation box by setting an air knife to blow air onto the cryopreservation box, thereby reducing local humidity and inhibiting the secondary condensation of frost.
[0021] 3. The defrosting device of this utility model adopts physical defrosting, does not involve chemical substances, will not cause pollution to the environment, and will not release harmful gases. The use process is relatively safe and will not cause harm to the human body or samples. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the defrosting device of this utility model;
[0023] Figure 2 for Figure 1 Schematic diagram of the middle box structure;
[0024] Figure 3 for Figure 1 Schematic diagram of the defrosting mechanism and support drive assembly inside the middle box;
[0025] Figure 4 for Figure 3 A schematic diagram of the structure along direction A;
[0026] Figure 5 for Figure 3 Schematic diagram of the defrosting mechanism;
[0027] Figure 6 for Figure 1 A schematic diagram of a cryopreservation box structure installed inside the central cavity.
[0028] In the figure
[0029] 1-Box body; 2-Box cover; 201-Recessed structure; 3-Frozen storage box; 4-Receiving cavity; 5-Support column; 6-Support drive assembly; 601-Base plate; 602-Upright plate; 603-Support plate; 604-Second drive mechanism; 604-1-Second drive motor; 604-2-Gear; 605-Guide rail; 606-Rack; 607-Support rod; 7-Shielding curtain; 8-Water collection box; 9-Opening; 10-Defrosting mechanism; 1001-Mounting base; 1002-First drive mechanism; 1002-1-First drive motor; 1002-2-Synchronous belt; 1003-Roll brush; 1004-Fan; 1005-Air knife; 1006-Slider; 11-Start button; 12-Control system; 13-First detection switch; 14-Second detection switch; 15-Power supply. Detailed Implementation
[0030] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.
[0031] like Figure 1 and Figure 3 As shown, the defrosting device provided in this embodiment includes a housing 1, a housing cover 2 disposed on the top of the housing 1, and a defrosting mechanism 10, a receiving cavity 4, and a support drive assembly 6 disposed within the housing 1. The receiving cavity 4 is used to hold a cryogenic container 3. Figure 2 As shown, the receiving cavity 4 has a cuboid structure with open top and bottom. Multiple support columns 5 are provided on the bottom of the opposite side walls of the receiving cavity 4, evenly distributed along the length of the side walls and extending into the cavity. The lid 2 is rotatably connected to the body 1. A recessed structure 201 is provided on the lid 2 corresponding to the position of the receiving cavity 4, and the cross-sectional shape of the recessed structure 201 matches the cross-sectional shape of the receiving cavity 4. When the lid 2 is closed, the support columns 5, the side walls of the receiving cavity 4, and the recessed structure 201 form the placement space for the cryopreservation box 3. The height of the recessed structure 201 can be set as needed; if the cryopreservation box 3 is relatively low, the recessed structure 201 may not be required.
[0032] like Figure 1 and Figure 3 As shown, the defrosting mechanism 10 and the support drive assembly 6 are located below the receiving cavity 4. Figure 1 , Figure 3 and Figure 5As shown, the defrosting mechanism 10 includes a mounting base 1001 disposed within the housing 1, and a first drive mechanism 1002, a roller brush 1003, and a fan 1004 disposed on the mounting base 1001. The roller brush 1003 is disposed at the bottom of the support column 5 and is arranged along the width direction of the housing 1. The first drive mechanism 1002 includes a first drive motor 1002-1 and a synchronous belt 1002-2. The output end of the first drive motor 1002-1 is rotatably connected to the rotating shaft of the roller brush 1003 via the synchronous belt 1002-2. Figure 5 As shown, an air knife 1005 is provided on the left side of the roller brush 1003. The air outlet of the air knife 1005 is arranged upward along the length of the roller brush 1003, and the air knife 1005 is connected to the air outlet of the fan 1004. The air outlet of the air knife 1005 is a flat air outlet with a thickness of about 1mm. Figure 3 and Figure 4 As shown, the support drive assembly 6 includes a base plate 601 disposed along the bottom wall of the housing 1, upright plates 602 disposed on both sides of the base plate 601 along its length, a support plate 603 disposed between the two upright plates 602, and a second drive mechanism 604. The base plate 601 has a support column at its bottom, and the base plate 601 is mounted on the bottom wall of the housing 1 via this support column. Two support plates 603 are provided, and the two support plates 603 are disposed parallel to each other at the lower part of the two upright plates 602. A mounting base 1001 is disposed between the two support plates 603. Guide rails 605 are provided along the length of each of the two support plates 603. Two sliders 1006 are provided at the bottom of the mounting base 1001, and the two sliders 1006 are slidably connected to the guide rails 605 on the two support plates 603, respectively. Figure 4As shown, the second drive mechanism 604 includes a second drive motor 604-1 and a gear 604-2 disposed on the output end of the second drive motor 604-1. The second drive motor 604-1 is mounted on the mounting base 1001. A rack 606 is provided on the side wall of the support plate 603 located at the rear of the housing 1 along its length direction. The rack 606 meshes with the gear 604-2. Driven by the second drive motor 604-1, the gear 604-2 moves along the length direction of the rack 606, thereby driving the mounting base 1001 to move along the length direction of the guide rail 605. A curtain 7 is provided between the two upright plates 602. Two support rods 607 are provided on the inner side walls of the two upright plates 602 along the height direction. The support rods 607 are arranged along the width direction of the upright plates 602. The upper support rod 607 is parallel to the air outlet of the air knife 1005 and at the same height. The lower support rod 607 is located below the bottom of the mounting base 1001. The width of the shielding curtain 7 is slightly longer than the length of the roller of the roller brush 1003, and the width of the shielding curtain 7 is smaller than the distance between the two support plates 603. The shielding curtain 7 passes through the gap between the support rod 607 and the upright plate 602, and both ends of the shielding curtain 7 along its length are fixed to both sides of the roller brush 1003. The mounting base 1001 is located within the space enclosed by the shielding curtain 7. Figure 4 As shown, a water receiving box 8 is provided on the base plate 601, and the water receiving box 8 is located below the support plate 603. Figure 1 As shown, an opening 9 is provided on the side wall of the housing 1 corresponding to the location of the water receiving box 8. The water receiving box 8 can be inserted into or removed from the bottom plate 601 through this opening 9. Figure 1 and Figure 3 As shown, a power supply 15 is provided on the outer wall of the right-side upright plate 602, and a vent is provided on the corresponding right-side wall of the housing 1. Figure 1 , Figure 3 and Figure 4 As shown, a first detection switch 13 is provided between the tops of the two upright plates 602. This first detection switch 13 is used to detect the cryopreservation box 3 inside the receiving cavity 4. A start button 11 is provided on the top of the box body 1. Second detection switches 14 are provided at both ends of the support plate 603 on the front side along its length. These second detection switches 14 are used to detect the movement position of the slider 1006. Figure 5 As shown, a control system 12 is provided on the base plate 601. The first detection switch 13, the start button 11, the second detection switch 14, the first drive motor 1002-1, the fan 1004, and the second drive motor 604-1 are all electrically connected to the control system 12. The first detection switch 13, the start button 11, the second detection switch 14, the first drive motor 1002-1, the fan 1004, the second drive motor 604-1, and the control system 12 are all electrically connected to the power supply 15.
[0033] like Figure 6 As shown, the cryopreservation box 3 is placed inside the receiving cavity 4. Multiple support pillars 5 are provided inside the receiving cavity 4 to support the cryopreservation box 3. The gaps between the support pillars 5 ensure that the bottom of the cryopreservation box 3 is exposed so that it can contact the roller brush 1003. Pressing the start button 11 and closing the lid 2 activates the first detection switch 13, which detects the cryopreservation box 3. Simultaneously, the start button 11 is activated, and the control system 12 controls the first drive motor 1002-1, the fan 1004, and the second drive motor 604-1 to start. The first drive motor 1002-1 drives the roller brush 1003 to rotate via the synchronous belt 1002-2. The airflow from the fan 1004 is blown upwards through the air knife 1005. The roller brush 1003 cleans the bottom of the cryopreservation box 3, and the airflow from the air knife 1005 causes frost to detach from the bottom of the cryopreservation box 3. Simultaneously, the second drive motor 604-1 drives the gear 604-2 to rotate. The gear 604-2 moves along the length of the rack 606, causing the roller brush 1003, air knife 1005, and shielding curtain 7 to move along the length of the rack 606. This allows the roller brush 1003 to contact the entire bottom surface of the cryopreservation box 3, and the air knife 1005 to move horizontally to blow away the frost, preventing the brushed-off frost / water from continuing to adhere to the cryopreservation box 3 and causing secondary frost / ice formation. When the roller brush 1003 and air knife 1005 move horizontally, they can simultaneously pull the shielding curtain 7 to make a circular motion. When the cryopreservation box 3 is not placed inside, the shielding curtain 7 can block the opening of the receiving cavity 4, thus protecting the internal structure and ensuring the overall aesthetics of the device. The frost / water falling from the cryopreservation box 3 passes through the shielding curtain 7 and enters the water collection box 8. The water collection box 8 can be pulled out through the opening 9 at the bottom of the box 1, allowing the collected water in the water collection box 8 to be poured out. When the mounting base 1001 moves to the end of the support plate 603, the slider 1006 at the bottom of the mounting base 1001 will trigger the second detection switch 14. The second detection switch 14 will feed the signal back to the control system 12. The control system 12 will control the second drive motor 604-1 to reverse, so that the mounting base 1001 moves to the other end of the support plate 603, thereby making the mounting base 1001 move back and forth along the support plate 603.
[0034] The defrosting device in this embodiment has a simple structure, low cost, and can be reused multiple times. Only the roller brush 1003 is a consumable that needs to be replaced periodically; there is no need to purchase special chemical defrosting agents. This defrosting device uses physical defrosting, does not involve chemical substances, will not pollute the environment, and will not release harmful gases. The process is relatively safe and will not harm the human body.
[0035] The above embodiments should be understood as being used only to illustrate the utility model more clearly, and not to limit the scope of the utility model. After reading this utility model, any modifications of the embodiments by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.
Claims
1. A defrosting device, characterized by: It includes a box body (1), a box cover (2) disposed on the top of the box body (1), and a defrosting mechanism (10) and a receiving cavity (4) disposed inside the box body (1), the receiving cavity (4) being used to place the cryopreservation box (3); The defrosting mechanism (10) includes a mounting base (1001) disposed in the housing (1), and a first drive mechanism (1002), a roller brush (1003) and a fan (1004) disposed on the mounting base (1001). The output end of the first drive mechanism (1002) is connected to the rotating shaft of the roller brush (1003), and the roller brush (1003) is disposed at the bottom of the receiving cavity (4). The roller brush (1003) is provided with an air knife (1005) on its left and / or right sides. The air outlet of the air knife (1005) is set upward along the length of the roller brush (1003), and the air knife (1005) is connected to the air outlet of the fan (1004).
2. The defrosting device according to claim 1, characterized in that: The housing (1) is provided with a support drive assembly (6), which includes a bottom plate (601) arranged along the bottom wall of the housing (1), upright plates (602) arranged on both sides of the bottom plate (601) along the length direction, a support plate (603) arranged between the two upright plates (602), and a second drive mechanism (604). The support plate (603) is provided with a guide rail (605) along the length direction. The bottom of the mounting base (1001) is provided with a slider (1006), which is slidably connected to the guide rail (605). The output end of the second drive mechanism (604) is connected to the mounting base (1001). Under the drive of the second drive mechanism (604), the mounting base (1001) moves along the length direction of the guide rail (605).
3. The defrosting device according to claim 2, characterized in that: The support plate (603) is provided in two pieces, and the two support plates (603) are arranged in parallel at the lower part of the two upright plates (602). The roller brush (1003) is arranged between the two support plates (603). The bottom of the mounting base (1001) is provided with two sliders (1006), and the two sliders (1006) are slidably connected to the guide rails (605) on the two support plates (603).
4. The defrosting device according to claim 3, characterized in that: The box (1) is equipped with a shielding curtain (7). Two support rods (607) are provided on each of the two upright plates (602) along the height direction. The support rods (607) are arranged along the width direction of the upright plates (602). The shielding curtain (7) passes through the gap between the support rods (607) and the upright plates (602). The two ends of the shielding curtain (7) along the length direction are respectively fixed to the two sides of the roller brush (1003). The mounting base (1001) is located in the space surrounded by the shielding curtain (7).
5. The defrosting device according to claim 4, characterized in that: The upper support rod (607) is parallel to the air outlet of the air knife (1005) and both are at the same height. The lower support rod (607) is located below the bottom of the mounting base (1001). The width of the shielding curtain (7) is greater than or equal to the length of the roller of the roller brush (1003), and the width of the shielding curtain (7) is less than the distance between the two support plates (603).
6. The defrosting device according to claim 2, characterized in that: The second drive mechanism (604) includes a second drive motor (604-1) and a gear (604-2) disposed on the output end of the second drive motor (604-1). The second drive motor (604-1) is disposed on the mounting base (1001). The side wall of the support plate (603) is provided with a rack (606) along the length direction, and the rack (606) meshes with the gear (604-2).
7. The defrosting device according to claim 2, characterized in that: The base plate (601) is provided with a water receiving box (8), which is located below the support plate (603); the side wall of the box (1) is provided with an opening (9) corresponding to the setting position of the water receiving box (8), and the water receiving box (8) can be inserted into the base plate (601) or pulled out from the base plate (601) through the opening (9).
8. The defrosting device according to claim 2, characterized in that: The support drive assembly (6) is provided with a first detection switch (13), which is used to detect the cryopreservation box (3) in the accommodating cavity (4). The top of the box body (1) is provided with a start button (11). The support plate (603) is provided with a second detection switch (14) at both ends along the length direction. The second detection switch (14) is used to detect the moving position of the slider (1006). The first detection switch (13), the start button (11), the second detection switch (14), the first drive mechanism (1002), the fan (1004), and the second drive mechanism (604) are all electrically connected to the control system (12).
9. The defrosting device according to claim 1, characterized in that: The receiving cavity (4) is a cuboid structure. At least two side walls of the cuboid are provided with multiple support columns (5). The support columns (5) extend into the receiving cavity (4). The roller brush (1003) is located at the bottom of the support column (5).
10. The defrosting device according to claim 1, characterized in that: The first drive mechanism (1002) includes a first drive motor (1002-1) and a synchronous belt (1002-2). The output end of the first drive motor (1002-1) is rotatably connected to the rotating shaft of the roller brush (1003) via the synchronous belt (1002-2).