Internal airflow heat dissipation device of biological freezing and thawing machine

Abstract

The invention discloses an internal airflow heat dissipation device for a biological freezing and thawing machine, which specifically comprises a rotating slide way, a liquid storage shell is sleeved and fixedly connected to the outer side of the rotating slide way, one side of the liquid storage shell is communicated with an external water pump through a communicating pipe, and a spraying device is arranged between the liquid storage shell and the rotating slide way; the outer side of the air fan extends into the rotating slide way and is in sliding connection with the inner wall of the rotating slide way; the filtering device is arranged on one side of the rotating slide way, and the filtering device is fixedly connected with the rotating slide way; the spraying device comprises a fixed sleeve, sliding grooves are formed in the two sides of the inner wall of the fixed sleeve, and the length of each sliding groove is half of that of the fixed sleeve. According to the airflow heat dissipation device in the biological freezing and thawing machine, heat on the surface of the device can be taken away through water mist evaporation heat absorption, the heat dissipation effect is good, and the influence of the external environment temperature is small.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation of biological freeze-thaw machines, in particular to an internal airflow heat dissipation device of a biological freeze-thaw machine. Background Art

[0002] The biological freeze-thaw machine is an important process equipment for rapid low-temperature freezing and thawing of liquid materials in bioengineering, biopharmaceuticals and other pharmaceutical and preparation industries. It is mainly used in the freezing, thawing and experimental product research of protein stock solutions in the biopharmaceutical field. It can quickly cool down the protein stock solution to a stable state, effectively avoid chemical degradation and polymerization denaturation of proteins, effectively improve product yields, and thus ensure product safety and reliability. It is an important process equipment in the field of biological processes. At present, the heat dissipation device used in the biological freeze-thaw machine is usually a heat dissipation fan that directly blows air onto the heating device for heat dissipation. When the external ambient temperature is high, the air temperature blown by the heat dissipation fan is also high, and the heat dissipation effect is poor. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an internal airflow heat dissipation device for a biological freezer and thaw machine, which solves the problem that the heat dissipation devices currently used in biological freezer and thaw machines are usually heat dissipation fans that blow air directly onto the heating device to dissipate heat. When the external ambient temperature is high, the temperature of the air blown by the heat dissipation fan is also high, resulting in poor heat dissipation effect.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an internal airflow heat dissipation device of a biological freeze-thaw machine, specifically comprising: A rotating slideway, a liquid storage shell is sleeved and fixedly connected to the outer side of the rotating slideway, one side of the liquid storage shell is connected to an external water pump through a connecting pipe, and a spray device is provided between the liquid storage shell and the rotating slideway; An air fan, the outer side of which extends into the interior of the rotating slideway and is slidably connected to the inner wall of the rotating slideway; A filter device, which is arranged on one side of the rotating slideway and is fixedly connected to the rotating slideway; The spray device comprises: A fixed sleeve, wherein both sides of the inner wall of the fixed sleeve are provided with slide grooves, and the length of the slide grooves is set to be half of the fixed sleeve; A sealing plug, which is arranged inside one end of the fixed sleeve and is slidably connected to the inner wall of the fixed sleeve, one side of the sealing plug is fixedly connected to a connecting rod, and both sides of the connecting rod are fixedly connected to slide plates; A return spring, which is sleeved on the connecting rod, one end of which is fixedly connected to the sealing plug, and one end of which is away from the sealing plug is fixedly connected to the inner wall of the fixed sleeve; An arc-shaped top block, one side of which is fixedly connected to the connecting rod, and the arc-shaped top block is arranged in a flat shape; A sliding top block is arranged inside the rotating slideway and is slidably connected to the inner wall of the rotating slideway. One side of the sliding top block is fixedly connected to the rotating ring.

[0005] When in use, the air fan rotates driven by the motor inside the filter device, driving the sliding top block to rotate. The sliding top block slides inside the rotating slide and intermittently squeezes the arc-shaped top block. The arc-shaped top block moves toward the inside of the fixed sleeve under the squeezing of the sliding top block, and drives the sealing plug to escape from the inside of the fixed sleeve through the connecting rod. At this time, the cooling water inside the liquid storage shell can be discharged into the rotating slide through the fixed sleeve. The sliding top block inside the rotating slide drives it to flow out of the rotating slide and is broken up into water mist by the air fan and blown to the surface of the heating device, thereby cooling and dissipating the heat of the heating device. The heat on the surface of the device can be taken away by evaporating the water mist, and the heat dissipation effect is good and is less affected by the external ambient temperature.

[0006] A sliding top block and an arc-shaped top block are provided, and the arc-shaped top block can be pushed intermittently when the sliding top block rotates, so that intermittent communication is achieved between the liquid storage shell and the rotating slideway, so that water inside the liquid storage shell intermittently flows out from the fixed sleeve, avoiding excessive water flow that causes the air fan to be unable to turn the water into water mist, and the use is stable and reliable.

[0007] Preferably, one end of the fixed sleeve is communicated with the interior of the liquid storage shell, and one end of the fixed sleeve away from the liquid storage shell is communicated with the interior of the rotating slideway.

[0008] Preferably, one end of the slide plate away from the connecting rod extends to the inside of the slide groove and is slidably connected to the inner wall of the slide groove, and one side of the arc-shaped top block away from the connecting rod extends to the inside of the rotating slideway.

[0009] Preferably, the filtering device includes a filter sleeve, a first filter screen is fixedly connected to the inner wall of one end of the filter sleeve, a second filter screen is arranged on the side of the filter sleeve, a rotating shaft passes through and is rotatably connected to the top of the filter sleeve, a rotating plate is fixedly connected to the top of the rotating shaft, a cleaning brush is fixedly connected to the side of the rotating plate through a folding plate, and a driving shaft of a driving motor is fixedly connected to the top of the rotating plate.

[0010] Preferably, the filter sleeve is fixedly connected to the rotating slideway near the bottom, and the end of the rotating shaft away from the driving motor passes through the first filter screen and is fixedly connected to the air fan.

[0011] Preferably, the cleaning brushes are provided in a plurality of groups, and one side of the cleaning brushes extends to the surface of the second filter screen and is slidably connected to the surface of the second filter screen.

[0012] A filtering device is provided. When in use, the rotating plate is driven to rotate by a driving motor. The rotating plate drives the air fan to rotate through the rotating shaft to dissipate heat for the internal device of the freeze-thaw machine. While the rotating plate rotates, the cleaning brush can be driven to rotate through the folding plate. The surface of the second filter can be cleaned by the cleaning brush to prevent dust attached to the second filter from blocking the second filter and making it difficult for the air fan to rotate. Automatic cleaning can be achieved, and the torque burden of the driving motor can be reduced, which is convenient for protecting the motor. A first filter and a second filter are provided. The mesh diameter of the first filter is smaller than the mesh diameter of the second filter, so that secondary filtration can be achieved. Dust from the external environment can be effectively prevented from entering the interior of the freeze-thaw machine, and the dust prevention effect is good.

[0013] Preferably, the cleaning brush comprises an arc-shaped fixed frame, a rotating hole is opened on the side of the arc-shaped fixed frame, a brush roller is rotatably connected to the inner wall of the rotating hole, burrs are fixedly connected to the side of the brush roller, and a combing plate adapted to the burrs on the brush roller is fixedly connected to the inner wall of the arc-shaped fixed frame.

[0014] Preferably, the top of the arc-shaped fixed frame is fixedly connected to the rotating plate via a folding plate, and there are even multiple groups of rotating holes that are evenly distributed on the side of the arc-shaped fixed frame.

[0015] Preferably, a damping pad is provided between the side surface of the brush roller and the inner wall of the rotating hole, and the distribution of burrs on the brush roller is matched with the distribution of mesh holes on the second filter screen.

[0016] A cleaning brush is provided, and when the cleaning brush rotates on the surface of the second filter screen, the friction between the second filter screen and the brush roller drives the brush roller to rotate, and during the rotation of the brush roller, the debris entangled on the burrs on the side of the brush roller can be combed off by the combing plate, so as to avoid the brush roller being unable to clean the filter screen due to too many burrs entangled on the brush roller, thereby facilitating the maintenance of the cleaning effect of the cleaning brush, and a damping pad is provided between the brush roller and the rotating hole, so that the brush roller can maintain a certain relative sliding with the surface of the second filter screen while rotating, thereby more effectively cleaning the surface of the second filter screen.

[0017] The present invention provides an internal airflow heat dissipation device for a biological freeze-thaw machine. It has the following beneficial effects: (I) The internal airflow heat dissipation device of the biological freeze-thaw machine is provided with a spray device. The air fan is driven by the motor inside the filter device to rotate, driving the sliding top block to rotate. The sliding top block intermittently squeezes the arc-shaped top block while sliding inside the rotating slide. The arc-shaped top block moves toward the inside of the fixed sleeve under the squeezing of the sliding top block, and drives the sealing plug to escape from the inside of the fixed sleeve through the connecting rod. At this time, the cooling water inside the liquid storage shell can be discharged into the inside of the rotating slide through the fixed sleeve, and driven by the sliding top block inside the rotating slide to flow out from the inside of the rotating slide and be dispersed into water mist by the air fan and blown to the surface of the heating device, thereby cooling and dissipating the heat of the heating device. The heat on the surface of the device can be taken away by evaporating the water mist to absorb heat. The heat dissipation effect is good and is less affected by the external ambient temperature.

[0018] (ii) The internal airflow heat dissipation device of the biological freeze-thaw machine is provided with a sliding top block and an arc-shaped top block. When the sliding top block rotates, the arc-shaped top block can be pushed intermittently, so that intermittent communication is achieved between the liquid storage shell and the rotating slideway, so that the water inside the liquid storage shell intermittently flows out from the fixed sleeve, avoiding excessive water flow that causes the air fan to be unable to turn the water into water mist, and the use is stable and reliable.

[0019] (III) The internal airflow heat dissipation device of the biological freeze-thaw machine is provided with a filtering device. When in use, the rotating plate is driven to rotate by a driving motor, and the rotating plate drives the air fan to rotate through the rotating shaft to dissipate the heat of the internal device of the freeze-thaw machine. While the rotating plate rotates, the cleaning brush can be driven to rotate through the folding plate. The surface of the second filter screen can be cleaned by the cleaning brush to prevent the dust attached to the second filter screen from blocking the second filter screen and making it difficult to rotate the air fan. Automatic cleaning can be achieved, and the torque burden of the driving motor can be reduced, which is convenient for protecting the motor. A first filter screen and a second filter screen are provided. The mesh diameter of the first filter screen is smaller than the mesh diameter of the second filter screen, which can achieve secondary filtration and effectively prevent dust from the external environment from entering the interior of the freeze-thaw machine, with a good dust prevention effect.

[0020] (IV) The internal air flow heat dissipation device of the biological freeze-thaw machine is provided with a cleaning brush. When the cleaning brush rotates on the surface of the second filter screen, the friction between the second filter screen and the brush roller drives the brush roller to rotate. During the rotation of the brush roller, the debris entangled on the burrs on the side of the brush roller can be combed off by the combing plate, so as to avoid the brush roller being unable to clean the filter screen due to a large number of burrs entangled on the brush roller, thereby facilitating the maintenance of the cleaning effect of the cleaning brush. A damping pad is provided between the brush roller and the rotating hole, so that the brush roller can maintain a certain relative sliding with the surface of the second filter screen while rotating, thereby more effectively cleaning the surface of the second filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the structure of the spray device of the present invention; Figure 4 It is a schematic diagram of the structure of the filtering device of the present invention; Figure 5 It is a schematic diagram of the cleaning brush structure of the present invention.

[0022] In the figure: 1, rotating slide, 2, liquid storage shell, 3, spray device, 31, fixed sleeve, 32, slide groove, 33, sealing plug, 34, connecting rod, 35, slide plate, 36, return spring, 37, arc top block, 38, sliding top block, 4, air fan, 5, filtering device, 51, filter sleeve, 52, first filter screen, 53, second filter screen, 54, rotating shaft, 55, rotating plate, 56, cleaning brush, 561, arc fixed frame, 562, rotating hole, 563, brush roller, 564, combing plate, 57, driving motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0024] See also Figure 1-3 The present invention provides a technical solution: an internal airflow heat dissipation device of a biological freeze-thaw machine, specifically comprising: A rotating slide 1, a liquid storage shell 2 is sleeved and fixedly connected to the outer side of the rotating slide 1, one side of the liquid storage shell 2 is connected to an external water pump through a connecting pipe, and a spray device 3 is provided between the liquid storage shell 2 and the rotating slide 1; An air fan 4, the outer side of which extends into the interior of the rotating slideway 1 and is slidably connected to the inner wall of the rotating slideway 1; A filter device 5, which is arranged on one side of the rotating slideway 1 and is fixedly connected to the rotating slideway 1; The spray device 3 comprises: A fixed sleeve 31, wherein both sides of the inner wall of the fixed sleeve 31 are provided with slide grooves 32, and the length of the slide grooves 32 is set to be half of the fixed sleeve 31; A sealing plug 33, which is disposed inside one end of the fixed sleeve 31 and is slidably connected to the inner wall of the fixed sleeve 31, a connecting rod 34 is fixedly connected to one side of the sealing plug 33, and slide plates 35 are fixedly connected to both sides of the connecting rod 34; A return spring 36, which is sleeved on the connecting rod 34, one end of the return spring 36 is fixedly connected to the sealing plug 33, and one end of the return spring 36 away from the sealing plug 33 is fixedly connected to the inner wall of the fixed sleeve 31; An arc-shaped top block 37, one side of which is fixedly connected to the connecting rod 34, and the arc-shaped top block 37 is configured to be flat; The sliding top block 38 is disposed inside the rotating slideway 1 and is slidably connected to the inner wall of the rotating slideway 1 . One side of the sliding top block 38 is fixedly connected to the rotating ring 5 .

[0025] One end of the fixed sleeve 31 is communicated with the interior of the liquid storage shell 2 , and one end of the fixed sleeve 31 away from the liquid storage shell 2 is communicated with the interior of the rotating slideway 1 .

[0026] One end of the slide plate 35 away from the connecting rod 34 extends to the inside of the slide groove 32 and is slidably connected to the inner wall of the slide groove 32 . The arc-shaped top block 37 extends to the inside of the rotating slideway 1 away from one side of the connecting rod 34 .

[0027] When in use, the air fan 4 is driven by the motor inside the filter device 5 to rotate, driving the sliding top block 38 to rotate. The sliding top block 38 slides inside the rotating slideway 1 and intermittently squeezes the arc top block 37. The arc top block 37 moves into the fixed sleeve 31 under the squeezing of the sliding top block 38, and drives the sealing plug 33 to escape from the fixed sleeve 31 through the connecting rod 34. At this time, the cooling water inside the liquid storage shell 2 can be discharged into the rotating slideway 1 through the fixed sleeve 31, and the sliding top block 38 inside the rotating slideway 1 drives it to flow out from the rotating slideway 1 and be sucked by the air The fan 4 breaks up the water into mist and blows it onto the surface of the heating device, thereby cooling and dissipating the heat of the heating device. The heat on the surface of the device can be taken away by evaporating the water mist, and the heat dissipation effect is good, and it is less affected by the external ambient temperature. A sliding top block 38 and an arc-shaped top block 37 are provided, and the arc-shaped top block 37 can be pushed intermittently when the sliding top block 38 rotates, so that intermittent communication is achieved between the liquid storage shell 2 and the rotating slideway 1, so that the water inside the liquid storage shell 2 intermittently flows out from the fixed sleeve 31, avoiding excessive water flow that causes the air fan 4 to be unable to break the water into mist, and the use is stable and reliable. Example

[0028] See also Figure 1-4On the basis of the first embodiment, the present invention provides a technical solution: the filter device 5 includes a filter sleeve 51, a first filter screen 52 is fixedly connected to the inner wall of one end of the filter sleeve 51, a second filter screen 53 is arranged on the side of the filter sleeve 51, a rotating shaft 54 ​​is passed through and rotatably connected to the top of the filter sleeve 51, a rotating plate 55 is fixedly connected to the top of the rotating shaft 54, a cleaning brush 56 is fixedly connected to the side of the rotating plate 55 through a folding plate, and a driving shaft of a driving motor 57 is fixedly connected to the top of the rotating plate 55. The filter sleeve 51 is fixedly connected to the rotating slideway 1 near the bottom, and one end of the rotating shaft 54 ​​away from the driving motor 57 passes through the first filter screen 52 and is fixedly connected to the air fan 4. A plurality of cleaning brushes 56 are provided, and one side of the cleaning brush 56 extends to the surface of the second filter screen 53 and is slidably connected to the surface of the second filter screen 53 Then, a filtering device 5 is provided. When in use, the rotating plate 55 is driven to rotate by the driving motor 57. The rotating plate 55 drives the air fan 4 to rotate through the rotating shaft 54 ​​to dissipate heat for the internal device of the freeze-thaw machine. While the rotating plate 55 rotates, the cleaning brush 56 can be driven to rotate through the folding plate. The surface of the second filter screen 53 can be cleaned by the cleaning brush 56 to prevent the dust attached to the second filter screen 53 from blocking the second filter screen 53 and making it difficult for the air fan 4 to rotate. Automatic cleaning can be achieved, and the torque burden of the driving motor 57 can be reduced, which is convenient for protecting the motor. A first filter screen 52 and a second filter screen 53 are provided. The mesh diameter of the first filter screen 52 is smaller than the mesh diameter of the second filter screen 53, so that secondary filtration can be achieved, which can effectively prevent dust from the external environment from entering the interior of the freeze-thaw machine, and the dustproof effect is good. Example

[0029] See also Figure 1-5On the basis of the first and second embodiments, the present invention provides a technical solution: the cleaning brush 56 includes an arc-shaped fixed frame 561, a rotating hole 562 is opened on the side of the arc-shaped fixed frame 561, a brush roller 563 is rotatably connected to the inner wall of the rotating hole 562, a burr is fixedly connected to the side of the brush roller 563, a combing plate 564 adapted to the burr on the brush roller 563 is fixedly connected to the inner wall of the arc-shaped fixed frame 561, the top of the arc-shaped fixed frame 561 is fixedly connected to the rotating plate 55 through a folding plate, the rotating holes 562 are evenly distributed on the side of the arc-shaped fixed frame 561, a damping pad is arranged between the side of the brush roller 563 and the inner wall of the rotating hole 562, and the burr distribution on the brush roller 563 is consistent with the second filter screen 53 is adapted to the mesh distribution on the second filter screen 53, and a cleaning brush 56 is provided. When the cleaning brush 56 rotates on the surface of the second filter screen 53, the friction between the second filter screen 53 and the brush roller 563 drives the brush roller 563 to rotate. During the rotation of the brush roller 563, the debris entangled on the burrs on the side of the brush roller 563 can be combed off by the combing plate 564, so as to avoid the brush roller 563 being unable to clean the filter screen due to the burrs entangled on the brush roller 563, so as to facilitate maintaining the cleaning effect of the cleaning brush 56, and a damping pad is provided between the brush roller 563 and the rotating hole 562, so that the brush roller 563 can maintain a certain relative sliding with the surface of the second filter screen 53 while rotating, so as to more effectively clean the surface of the second filter screen 53.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An internal airflow heat dissipation device of a biological freeze-thaw machine, specifically comprising: A rotating slideway (1), a liquid storage shell (2) is sleeved on the outside of the rotating slideway (1) and fixedly connected thereto, one side of the liquid storage shell (2) is connected to an external water pump via a connecting pipe, and a spray device (3) is provided between the liquid storage shell (2) and the rotating slideway (1); An air fan (4), the outer side of the air fan (4) extending into the interior of the rotating slideway (1) and being slidably connected to the inner wall of the rotating slideway (1); A filter device (5), the filter device (5) being arranged on one side of the rotating slideway (1), the filter device (5) being fixedly connected to the rotating slideway (1); The spray device (3) comprises: A fixed sleeve (31), wherein both sides of the inner wall of the fixed sleeve (31) are provided with slide grooves (32), and the length of the slide grooves (32) is set to be half of the length of the fixed sleeve (31); A sealing plug (33), the sealing plug (33) being arranged inside one end of the fixed sleeve (31) and being slidably connected to the inner wall of the fixed sleeve (31), one side of the sealing plug (33) being fixedly connected to a connecting rod (34), and both sides of the connecting rod (34) being fixedly connected to sliding plates (35); a return spring (36), the return spring (36) being sleeved on the connecting rod (34), one end of the return spring (36) being fixedly connected to the sealing plug (33), and one end of the return spring (36) being away from the sealing plug (33) being fixedly connected to the inner wall of the fixed sleeve (31); An arc-shaped top block (37), one side of the arc-shaped top block (37) being fixedly connected to the connecting rod (34), and the arc-shaped top block (37) being configured to be flat; A sliding top block (38) is arranged inside the rotating slideway (1) and is slidably connected to the inner wall of the rotating slideway (1); one side of the sliding top block (38) is fixedly connected to the rotating ring (5).

2. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 1, characterized in that: One end of the fixed sleeve (31) is in communication with the interior of the liquid storage shell (2), and one end of the fixed sleeve (31) away from the liquid storage shell (2) is in communication with the interior of the rotating slideway (1).

3. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 1, characterized in that: One end of the slide plate (35) away from the connecting rod (34) extends into the interior of the slide groove (32) and is slidably connected to the inner wall of the slide groove (32), and one side of the arc-shaped top block (37) away from the connecting rod (34) extends into the interior of the rotating slideway (1).

4. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 1, characterized in that: The filtering device (5) comprises a filtering sleeve (51), a first filter screen (52) being fixedly connected to the inner wall of one end of the filtering sleeve (51), a second filter screen (53) being arranged on the side of the filtering sleeve (51), a rotating shaft (54) penetrating through the top of the filtering sleeve (51) and being rotatably connected thereto, a rotating plate (55) being fixedly connected to the top of the rotating shaft (54), a cleaning brush (56) being fixedly connected to the side of the rotating plate (55) via a folding plate, and a driving shaft of a driving motor (57) being fixedly connected to the top of the rotating plate (55).

5. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 4, characterized in that: The filter sleeve (51) is fixedly connected to the rotating slideway (1) near the bottom, and the end of the rotating shaft (54) away from the driving motor (57) passes through the first filter screen (52) and is fixedly connected to the air fan (4).

6. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 4, characterized in that: The cleaning brushes (56) are provided in multiple groups, and one side of the cleaning brushes (56) extends to the surface of the second filter screen (53) and is slidably connected to the surface of the second filter screen (53).

7. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 4, characterized in that: The cleaning brush (56) comprises an arc-shaped fixed frame (561), a rotating hole (562) is provided on a side of the arc-shaped fixed frame (561), a brush roller (563) is rotatably connected to the inner wall of the rotating hole (562), burrs are fixedly connected to the side of the brush roller (563), and a combing plate (564) adapted to the burrs on the brush roller (563) is fixedly connected to the inner wall of the arc-shaped fixed frame (561).

8. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 7, characterized in that: The top of the arc-shaped fixed frame (561) is fixedly connected to the rotating plate (55) via a folding plate, and there are even multiple groups of rotating holes (562) that are evenly distributed on the side of the arc-shaped fixed frame (561).

9. The internal airflow heat dissipation device of a biological freeze-thaw machine according to claim 7, characterized in that: A damping pad is provided between the side surface of the brush roller (563) and the inner wall of the rotating hole (562); the distribution of burrs on the brush roller (563) matches the distribution of mesh holes on the second filter screen (53).

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