A high capacity refrigerated centrifuge

Abstract

The application belongs to the technical field of centrifugal equipment, and particularly relates to a large-capacity refrigerated centrifuge which comprises an outer shell, a control screen installed on the outer shell and an internal control system; a centrifugal cavity which is arranged in the inner part of the outer shell, is provided with a motor at the bottom and is installed with a rotor which is detachably connected with the motor; a refrigeration assembly which is used for cooling and refrigerating the inner part of the centrifugal cavity; a water tank which is in communication with the bottom of the centrifugal cavity through a pipeline; a scraper which is installed in the centrifugal cavity and is used for scraping the inner wall of the centrifugal cavity; and a force storage assembly which is installed in the centrifugal cavity and is used for driving the scraper to move in a circular motion in the centrifugal cavity so as to scrape off the condensed water which is dissolved and condensed in the centrifugal cavity. The application accumulates rotating force through the force storage assembly and performs water scraping treatment after the centrifugal work is completed.

Description

Technical Field

[0001] This invention belongs to the field of centrifugal equipment technology, specifically a large-capacity refrigerated centrifuge. Background Technology

[0002] Refrigerated centrifuges are centrifuges equipped with a refrigeration system. They are commonly used for the separation of different materials. Refrigerated centrifuges can be roughly divided into low-speed, high-speed, and ultra-high-speed analytical and preparative refrigerated centrifuges, based on their rotation speed. Among them, large-capacity refrigerated centrifuges are widely used in medical, testing and other fields because of their large single-cycle centrifugation capacity.

[0003] Most refrigerated centrifuges consist of a centrifuge chamber, a refrigeration system, and a rotor. During centrifugation, the refrigeration system cools the closed centrifuge chamber. Due to the large capacity of the centrifuge chamber in large-capacity refrigerated centrifuges, a large amount of air enters the centrifuge chamber during a single opening and closing process. Therefore, during actual refrigerated centrifugation, moisture in the air will condense into frost on the walls of the centrifuge chamber. When the centrifuge stops working and the temperature of the centrifuge chamber approaches room temperature, the frost melts and moisture condenses simultaneously in the centrifuge chamber, resulting in the centrifuge chamber being filled with condensate droplets. In order to prevent the accumulation of condensate from damaging the centrifuge body, after the centrifuge is used, the staff not only need to wipe and clean the condensate continuously while the centrifuge chamber returns to room temperature, but also need to regularly drain the condensate flowing into the water tank, making the use of the centrifuge too troublesome.

[0004] In related technologies, condensate from the centrifuge chamber is discharged into a water tank via a conduit. The condensate in the water tank is then used to cool and dissipate heat from the compressor in the refrigeration system, causing the condensate to evaporate into water vapor. The water vapor is then discharged into the external environment by an exhaust fan, thus eliminating the need for staff to manually drain the condensate. However, in practical applications, it has been found that after the centrifuge is used, as the temperature of the centrifuge chamber gradually returns to room temperature, moisture in the air continuously condenses on the inner wall of the centrifuge chamber. Since condensate itself has a certain adsorption capacity, staff still need to wipe and clean the centrifuge after use to maintain a dry environment in the centrifuge chamber.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the present invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0006] In view of this, the present invention proposes a large-capacity refrigerated centrifuge to solve the above-mentioned technical problems. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a large-capacity refrigerated centrifuge.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: This invention uses a power storage component in conjunction with an electric motor to accumulate rotational force during centrifugation and release the rotational force after centrifugation stops to drive the scraper to rotate. The power storage component and the scraper can continuously scrape and clean the centrifuge chamber after centrifugation stops or even after the centrifuge is powered off, so as to remove water droplets in the centrifuge chamber, enhance the self-cleaning performance of the centrifuge, effectively reduce the labor intensity of the staff, and enhance the ease of use of the centrifuge.

[0009] The present invention provides a large-capacity refrigerated centrifuge, comprising:

[0010] The outer casing is composed of a box and a hinged flip cover. A control screen with a built-in control system is installed on the outer casing.

[0011] The centrifuge chamber is located inside the outer shell. An electric motor is installed at the bottom of the centrifuge chamber, and a rotor is installed inside the centrifuge chamber. The rotor is detachably connected to the electric motor.

[0012] A refrigeration assembly is used to cool the interior of a centrifuge chamber. The refrigeration assembly includes an evaporator, a compressor, a condenser, and compatible pipes, and refrigerant flows through the evaporator, compressor, condenser, and compatible pipes.

[0013] The water tank is installed in the inner cavity of the outer shell and is located at the bottom of the centrifuge chamber. The water tank and the bottom of the centrifuge chamber are connected by a pipe. The condenser and compressor extend into the water tank and the portion of the condenser and compressor located inside the water tank is covered with a waterproof membrane.

[0014] Also includes

[0015] A scraper, which is installed inside the centrifuge chamber and is used to scrape the inner wall of the centrifuge chamber;

[0016] A power storage component is installed inside the centrifuge chamber. The power storage component is used to drive the scraper to perform circular motion inside the centrifuge chamber, thereby scraping away the dissolved and condensed condensate inside the centrifuge chamber.

[0017] Preferably, the scraper blade is made of plastic material, the scraper blade is designed in multiples and the bottom of the scraper blade is connected to a water baffle ring, and the cross-section of the scraper blade is designed in an "L" shape.

[0018] Preferably, the energy storage component includes

[0019] The mounting ring is installed at the bottom of the centrifuge chamber and is located between the motor shaft and the water baffle ring. The mounting ring has a power storage chamber inside, and both ends of the power storage chamber pass through the mounting ring.

[0020] A transmission wheel is fixedly mounted on the motor shaft and rotates synchronously with the motor shaft.

[0021] The mounting column is installed inside the energy storage chamber. A driven wheel is rotatably mounted on the mounting column. A spring is fixedly connected between the driven wheel and the mounting column. The driven wheel meshes with a transmission wheel.

[0022] The toothed ring is fixedly installed on the inner wall of the water-blocking ring and extends into the energy storage cavity. The toothed ring and the driven wheel are driven in one direction.

[0023] Preferably, the energy storage chamber has uniformly distributed guide grooves inside, the mounting post extends into the guide grooves, and the portion of the mounting post located inside the guide groove is a regular square prism. The guide grooves have a "U" shape design, and a transmission rod is rotatably connected between two adjacent guide grooves. The transmission rod is elastically connected to the energy storage chamber through a torsion spring, and the transmission rod is used to push the mounting post to move within the guide groove.

[0024] Preferably, the centrifuge chamber is fixedly connected to a support ring below the mounting ring. The support ring and the mounting ring are elastically connected by a spring. The support ring is fixedly installed with evenly distributed guide blocks that extend into the guide groove. The guide blocks have an inclined surface design on the side of the guide block near the mounting ring to push the mounting column to move within the guide groove.

[0025] Preferably, a limiting block is installed at the bottom of the driven wheel, the limiting block is rotatably connected to the mounting column, the limiting block extends into the guide groove, the cross-section of the limiting block is a regular square prism, and the guide groove is provided with rotating grooves on both sides near and parallel to the toothed ring, the rotating grooves corresponding to the limiting block.

[0026] Preferably, a friction plate is fixedly connected to the side of the rotating groove near the toothed ring, and the side of the rotating groove away from the toothed ring has a smooth surface design.

[0027] Preferably, a sliding groove is provided between two adjacent guide grooves, and push rods are evenly distributed in the sliding groove through spring elastic connection. Both ends of the push rods extend into the guide groove. A stop rod is fixedly installed on the support ring, and the stop rod extends into the sliding groove. One of the push rods cooperates with the stop rod.

[0028] The beneficial effects of this invention are as follows:

[0029] 1. The large-capacity refrigerated centrifuge of the present invention, through the cooperation of a power storage component and an electric motor, accumulates rotational force during centrifugation and releases the rotational force after centrifugation stops, driving the scraper to rotate. The power storage component and the scraper are designed to continuously scrape and clean the centrifuge chamber after centrifugation stops or even after the centrifuge is powered off, thereby removing water droplets from the centrifuge chamber, enhancing the self-cleaning performance of the centrifuge, effectively reducing the labor intensity of the workers, and enhancing the ease of use of the centrifuge.

[0030] 2. The large-capacity refrigerated centrifuge of the present invention releases multiple springs sequentially. On the one hand, the pushing force of the springs on the toothed ring at the same time is small, which in turn results in a small rotational force of the toothed ring and the scraper. Since the inner wall of the centrifuge chamber is relatively smooth, the friction between the scraper and the inner wall of the centrifuge chamber is less than the pushing force when a single spring is released. Therefore, while avoiding excessive force of the rotating scraper and causing safety hazards, it also causes the scraper to scrape the water droplets on the inner wall of the centrifuge chamber. At the same time, the sequential release of multiple springs effectively prolongs the rotation time of the scraper. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is the front view of the present invention;

[0033] Figure 2 This is a partial cross-sectional view of the present invention;

[0034] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0035] Figure 4 This is a partial cross-sectional view of the energy storage component;

[0036] Figure 5 This is a partial sectional view of the mounting ring;

[0037] Figure 6 yes Figure 5 Enlarged view of a section at point B in the middle;

[0038] Figure 7 This is a top view of the support ring;

[0039] In the diagram: 1. Outer shell; 11. Centrifuge chamber; 12. Motor; 13. Water tank; 2. Scraper; 21. Water baffle ring; 22. Mounting ring; 23. Energy storage chamber; 24. Transmission wheel; 25. Mounting column; 26. Driven wheel; 27. Spring; 28. Gear ring; 3. Guide groove; 31. Transmission rod; 4. Support ring; 41. Guide block; 42. Limiting block; 43. Rotating groove; 44. Friction plate; 5. Sliding groove; 51. Push rod; 52. Stop bar. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0041] like Figures 1 to 7 As shown, the present invention provides a large-capacity refrigerated centrifuge, comprising:

[0042] The outer casing 1 is composed of a box and a hinged flip cover. The outer casing 1 is equipped with a control screen and a built-in control system.

[0043] Centrifuge chamber 11 is located inside the outer shell 1. A motor 12 is installed at the bottom of the centrifuge chamber 11. A rotor is installed inside the centrifuge chamber 11. The rotor is detachably connected to the motor 12.

[0044] A refrigeration assembly is used to cool the interior of the centrifugal chamber 11. The refrigeration assembly includes an evaporator, a compressor, a condenser, and matching pipes. Refrigerant flows through the evaporator, compressor, condenser, and matching pipes.

[0045] Water tank 13 is installed in the inner cavity of the outer shell 1. The water tank 13 is located at the bottom of the centrifuge chamber 11. The water tank 13 and the bottom of the centrifuge chamber 11 are connected by a pipe. The condenser and compressor extend into the water tank 13, and the part of the condenser and compressor located inside the water tank 13 is covered with a waterproof membrane.

[0046] Also includes

[0047] Scraper 2, the scraper 2 is installed inside the centrifuge chamber 11, the scraper 2 is used to scrape the inner wall of the centrifuge chamber 11;

[0048] A power storage component is installed inside the centrifuge chamber 11. The power storage component is used to drive the scraper 2 to perform circular motion inside the centrifuge chamber 11, thereby scraping away the dissolved and condensed condensate inside the centrifuge chamber 11.

[0049] In this embodiment, during large-scale material centrifugation, test tubes are evenly inserted onto the rotor, and the rotor is bolted or snapped to the output shaft of the motor 12. The flip cover is closed, and the outer shell 1, formed by the flip cover and the housing, is sealed. The refrigerated centrifuge system is then started and controlled via a control panel mounted on the surface of the outer shell 1. This drives the internal motor 12 and refrigeration system. When the motor 12 operates, it drives the rotor to rotate, completing the centrifugation of the material. During operation, the refrigeration system continuously circulates the refrigerant through the evaporator, compressor, and condenser, undergoing physical state changes during this flow. The refrigerant absorbs heat during evaporation in the evaporator, lowering the temperature inside the centrifuge chamber 11. Subsequently, the refrigerant is compressed in the compressor and vaporizes exothermically in the condenser, transferring heat to the outside. Since outside air enters the centrifuge chamber 11 during the placement of the rotor and materials, [the process is repeated here]. During the refrigeration process, water vapor in the air condenses on the inner wall of the centrifuge chamber 11 as it rapidly cools, forming frost. After the centrifugation operation is completed, the refrigeration system is shut off and the lid is opened. At this time, the temperature inside the centrifuge chamber 11 gradually returns to room temperature. As the temperature returns to room temperature, the frost that condensed on the centrifuge chamber 11, as well as the water vapor that condensed during the cooling process, gradually gathers on the wall of the centrifuge chamber 11 and condenses into evenly distributed small water droplets. At this time, the scraper, driven by the energy storage component, rotates inside the centrifuge chamber 11. During the rotation of the scraper, the water droplets on the inner wall of the centrifuge chamber 11 are gathered and guided, and then enter the water tank 13 through the pipe at the bottom of the centrifuge chamber 11. Since the compressor and condenser in the refrigeration system release a lot of heat when they are working, the condensate entering the water tank 13 can not only cool the compressor and condenser in the next centrifugation, but also reduce the frequency of cleaning the condensate in the water tank 13 by the staff due to the evaporation of water.

[0050] In this embodiment, the power storage component works in conjunction with the motor 12 to accumulate rotational force during centrifugation and release the rotational force after centrifugation stops, driving the scraper 2 to rotate. The power storage component and the scraper 2 are designed to continuously scrape and clean the centrifuge chamber 11 after centrifugation stops or even after the centrifuge is powered off, thereby removing water droplets from the centrifuge chamber 11, enhancing the self-cleaning performance of the centrifuge, effectively reducing the labor intensity of the workers, and enhancing the ease of use of the centrifuge.

[0051] In a preferred embodiment of the present invention, the scraper blade 2 is made of plastic material, the scraper blade 2 is designed in multiples, and a water baffle ring 21 is connected to the bottom of the scraper blade 2. The cross-section of the scraper blade 2 is designed in an "L" shape.

[0052] In this embodiment, the scraper is made of smooth polytetrafluoroethylene plastic or other waterproof plastic material. The cross-section of the scraper blade 2 is "L" shaped, so that when the scraper blade 2 rotates on the inner wall of the centrifuge chamber 11, it can guide the scraped water flow, causing the water flow to move towards the bottom of the centrifuge chamber 11. At the same time, a water-blocking ring 21 is fixedly connected to the bottom of the scraper blade 2. The water-blocking ring 21 intercepts the water flow that is guided and flowing above. Since the water-blocking ring 21 is rotatably connected to the outside of the motor shaft 12, the water-blocking ring 21 can effectively prevent the water flow from contacting the motor 12 or the rotor, thereby preventing the rotor made of aluminum alloy from being corroded, thus enhancing the safety factor of the rotor and motor 12 in the centrifuge and extending their service life.

[0053] In a preferred embodiment of the present invention, the energy storage component includes

[0054] Mounting ring 22 is installed at the bottom of centrifuge chamber 11. Mounting ring 22 is located between the rotating shaft of motor 12 and water baffle ring 21. An energy storage chamber 23 is opened inside the mounting ring 22, and both ends of the energy storage chamber 23 pass through the mounting ring 22.

[0055] The transmission wheel 24 is fixedly mounted on the rotating shaft of the motor 12 and rotates synchronously with the rotating shaft of the motor 12.

[0056] Mounting post 25 is installed in the energy storage chamber 23. A driven wheel 26 is rotatably mounted on the mounting post 25. A spring spring 27 is fixedly connected between the driven wheel 26 and the mounting post 25. The driven wheel 26 meshes with the transmission wheel 24.

[0057] The toothed ring 28 is fixedly installed on the inner wall of the water-blocking ring 21, and the toothed ring 28 is designed to extend into the energy storage chamber 23, and the toothed ring 28 and the driven wheel 26 are driven in one direction.

[0058] In this embodiment, when the motor 12 starts and drives the rotor to rotate, the transmission wheel 24, which is fixedly mounted on the shaft of the motor 12, rotates synchronously with the shaft. Since the rotating transmission wheel 24 meshes with the driven wheel 26, the meshing transmission action between the transmission wheel 24 and the driven wheel 26 causes relative rotation between the driven wheel 26 and the mounting post 25. As the relative movement between the driven wheel 26 and the mounting post 25 proceeds, the spring 27 fixedly mounted on the driven wheel 26 and the mounting post 25 gradually tightens, thereby accumulating rotational force. Furthermore, since the driven wheel 26 and the gear ring 28 have unidirectional transmission, i.e., this… The teeth on the toothed ring 28 used in the application are ratchet teeth. Therefore, the driven wheel 26 and the toothed ring 28 can rotate in one direction to transmit power. When the driven wheel 26 rotates under the drive wheel 24, the teeth on the driven wheel 26 contact the inclined surfaces of the teeth on the toothed ring 28, and the transmission between the driven wheel 26 and the toothed ring 28 cannot be completed. However, after the centrifugation operation is completed, the driven wheel 26 rotates in the opposite direction under the action of the spring 27. At this time, the driven wheel 26 meshes with the toothed ring 28, causing the toothed ring 28 to rotate. The rotating toothed ring 28 drives the water-blocking ring 21 and the scraper 2 to make circumferential motion, thereby scraping off and collecting the water droplets condensed on the inner wall of the centrifuge chamber 11.

[0059] In this embodiment, the clock spring 27 is used to accumulate rotational force. On the one hand, the clock spring 27 extends after the centrifuge finishes working and drives the scraper 2 to perform scraping operation. It has low energy requirements and does not need to be connected to a separate drive device to perform scraping operation. Since the scraping operation is performed after the centrifuge finishes working, at this time the staff has begun to take out and put in the materials in the centrifuge chamber 11. Using the clock spring 27 as the driving force for the scraper 2 can make the rotation of the scraper 2 smoother and avoid causing safety hazards.

[0060] In a preferred embodiment of the present invention, the energy storage cavity 23 is provided with uniformly distributed guide grooves 3, the mounting post 25 extends into the guide groove 3, and the portion of the mounting post 25 located in the guide groove 3 is in the shape of a regular square prism. The guide groove 3 has a "U" shaped design, and a transmission rod 31 is rotatably connected between two adjacent guide grooves 3. The transmission rod 31 is elastically connected to the energy storage cavity 23 through a torsion spring, and the transmission rod 31 is used to push the mounting post 25 to move within the guide groove 3.

[0061] In this embodiment, multiple driven wheels 26, mounting posts 25, and springs 27 are installed in the energy storage chamber 23, and are evenly arranged around the outside of the transmission wheel 24. Initially, only a single driven wheel 26 is in contact with the transmission wheel 24. When the transmission wheel 24 rotates driven by the shaft of the motor 12, the driven wheel 26 meshing with the transmission wheel 24 rotates, causing the spring 27 between the driven wheel 26 and the mounting post 25 to store and contract. When the spring 27 contracts to its maximum extent, the driven wheel 26 and the mounting post 25 can no longer rotate. At this time, under the continuous push of the transmission wheel 24, the driven wheel 26 and the mounting post... 25 slides along the guide groove 3 until the driven wheel 26 separates from the transmission wheel 24. Since a transmission rod 31 is rotatably connected between two adjacent guide grooves 3, under the pushing action of the transmission wheel 24 and the guiding action of the guide groove 3, the mounting post 25 gradually pushes one end of the transmission rod 31 to rotate, thereby causing the other end of the transmission rod 31 to push the mounting post 25 and the driven wheel 26 in the adjacent guide groove 3 closer to the transmission wheel 24, until the transmission wheel 24 meshes with the new driven wheel 26. This, in turn, causes the spring 27 between the driven wheel 26 and the mounting post 25 surrounding the transmission wheel 24 to complete its power storage.

[0062] By setting the guide groove 3 and the transmission rod 31, multiple driven wheels 26 are sequentially engaged with the transmission wheel 24, thereby compressing and storing the spring 27. The sequential engagement transmission setting can reduce the instantaneous load on the transmission wheel 24, avoiding excessive load on the transmission wheel 24 and its significant impact on the centrifugal operation, which could prevent the centrifugal operation from proceeding.

[0063] In a preferred embodiment of the present invention, the centrifuge chamber 11 is fixedly connected to the support ring 4 below the mounting ring 22. The support ring 4 and the mounting ring 22 are elastically connected by a spring. The support ring 4 is fixedly installed with evenly distributed guide blocks 41. The guide blocks 41 extend into the guide groove 3. The guide blocks 41 are designed with an inclined surface on the side near the mounting ring 22 to push the mounting column 25 to move within the guide groove 3.

[0064] In this embodiment, when the rotor and material are mounted on the shaft of the motor 12, the rotor and material exert pressure on the mounting ring 22. To reduce the friction between the rotor and the mounting ring 22, evenly distributed balls can be rotated above the mounting ring, thereby driving the mounting ring 22 to move towards the supporting ring 4. This, in turn, causes the guide block 41 to move from the bottom of the guide groove 3 into the interior of the guide groove 3. Since the guide block 41 is inclined on the side near the mounting ring 22, it can drive the guide block 41 to move into the guide groove 3 during its movement. The mounting post 25 moves into the guide groove 3. The guide block 41 corresponding to the initially engaged driven wheel 26 is L-shaped. Utilizing the inclined surface of its surface, as the guide block 41 moves into the guide groove 3, it pushes the mounting post 25 and the driven wheel 26 to the position where they engage with the transmission wheel 24. The remaining guide blocks 41 are all arc-shaped, used to push the mounting post 25 from the side of the guide groove 3 closer to the rotation direction to the side away from the rotation direction. This, in conjunction with the drive rod 31 pushing the mounting post 25 and the transmission wheel 24 pushing the driven wheel 26, further enhances the effect. This, in turn, pushes the mounting post 25, causing it to complete a cyclical movement within the guide groove 3. The transmission rod 31 pushes the mounting post 25 from a position away from the transmission wheel 24 in the guide groove 3 to a position close to the transmission wheel 24, where it engages with the transmission wheel 24. During the charging process of the spring 27, the mounting post 25 moves in the portion of the guide groove 3 parallel to the rotation direction of the transmission wheel 24. When the spring 27 reaches its maximum contraction, under the action of the teeth of the transmission wheel 24 and the driven wheel 26, the transmission wheel 24 pushes the driven wheel 26. The drive wheel 24 moves away from the drive wheel 24, causing the mounting column 25 to move closer to the gear ring 28 within the guide groove 3. After centrifugation ends and the spring spring 27 releases its rotational force, the mounting column 25 is positioned in the guide groove 3 close to and parallel to the gear ring 28. At this point, the guide block 41 pushes the mounting column 25 to the starting position, facilitating the cyclic movement of the mounting column 25 within the guide groove 3. This completes a single full cycle of the mounting column 25 at the beginning of the centrifugation operation, facilitating the reuse of the power storage component.

[0065] In a preferred embodiment of the present invention, a limiting block 42 is installed at the bottom of the driven wheel 26. The limiting block 42 is rotatably connected to the mounting column 25. The limiting block 42 extends into the guide groove 3. The cross-section of the limiting block 42 is a regular square prism. The guide groove 3 is provided with rotating grooves 43 on both sides parallel to the toothed ring 28. The rotating grooves 43 correspond to the limiting block 42.

[0066] In this embodiment, when the driven wheel 26 moves together with the mounting column 25 within the guide groove 3, the limiting block 42 installed at the bottom of the driven wheel 26 extends into the guide groove 3, thereby restricting the driven wheel 26 and preventing it from rotating. As the mounting column 25 continues to move, when the limiting block 42 moves to the rotation groove 43, since the rotation groove 43 is connected to the guide groove 3 and corresponds to the limiting block 42 in the depth direction of the guide groove 3, the limiting block 42 loses its position within the guide groove 3. Due to the limiting effect, the driven wheel 26 can rotate relative to the mounting column 25. Therefore, when the driven wheel 26 moves into the rotating groove 43 near the transmission wheel 24, it rotates under the drive of the transmission wheel 24, storing energy for the spring 27. When the transmission wheel 24 moves into the rotating groove 43 near the gear ring 28, the transmission wheel 24 gradually rotates under the elastic action of the spring 27, thereby driving the gear ring 28 to rotate. The rotating gear ring 28 drives the water-blocking ring 21 and the scraper 2 to rotate, thus completing the cleaning of the inner wall of the centrifuge chamber 11.

[0067] In this embodiment, by setting the limiting block 42 and the rotating groove 43, the transmission wheel 24 is in a restricted state before and after accumulating force, so that it cannot release the accumulated elastic force on its own. Therefore, during the centrifugation operation, the spring 27 can only tighten and accumulate elastic force, but cannot release it. After the centrifugation operation is completed, the spring 27 releases the elastic force, which can make the rotation time of the scraper 2 coincide with the time when water droplets condense on the inner wall of the centrifuge chamber 11, so that the rotation of the scraper 2 can work correctly and complete the cleaning of water droplets on the inner wall of the centrifuge chamber 11.

[0068] In a preferred embodiment of the present invention, a friction plate 44 is fixedly connected to the side of the rotating groove 43 near the toothed ring 28, and the side of the rotating groove 43 away from the toothed ring 28 is designed with a smooth surface.

[0069] In this embodiment, by fixing a friction plate 44 to the side of the rotating groove 43 near the toothed ring 28 and setting a smooth surface on the side away from the toothed ring 28, when the driven wheel 26 rotates in the rotating groove 43 under the action of the spring 27, the limiting block 42 fixedly connected to the driven wheel 26 rotates synchronously, thereby causing the limiting block 42 to contact the friction plate 44. During the rotation of the limiting block 42, friction is generated between the limiting block 42 and the friction plate 44, thereby causing the limiting block 42 to drive the mounting post 25 to slide in the guide groove 3 in the opposite direction of the rotation of the driven wheel 26 under the action of friction.

[0070] In a preferred embodiment of the present invention, a sliding groove 5 is provided between two adjacent guide grooves 3. Push rods 51 are evenly distributed in the sliding groove 5 by means of spring elastic connection. Both ends of the push rods 51 extend into the guide groove 3. A stop rod 52 is fixedly installed on the support ring 4. The stop rod 52 extends into the sliding groove 5. One of the push rods 51 and the stop rod 52 cooperate with each other.

[0071] In this embodiment, after the rotor and materials are manually removed, the mounting ring 22 is pushed by the spring on the supporting ring 4 under the loss of pressure, which causes the guide block 41 to exit from the guide groove 3. At this time, the stop rod 52 loses its pressure on the push rod 51. Here, the stop rod 52 and the push rod 51 are engaged by a bevel. When the stop rod 52 is inserted into the sliding groove 5, the bevel of the stop rod 52 causes the push rod 51 to squeeze the spring into the sliding groove 5. Therefore, when the stop rod 52 moves down, under the action of the spring, the stop rod 52, which is engaged with the stop rod 52, pushes the corresponding mounting post 25 to move in the guide groove 3, which in turn causes the mounting post to move. The limiting block 42, rotatably connected to the mounting post 25, moves into the rotating groove 43. The mounting post 25 rotates within the rotating groove 43 and, with the cooperation of the friction plate 44, moves in the opposite direction to the rotation of the driven wheel 26. As the mounting post 25 moves, it pushes the push rod 51 at the other end of the guide groove 3. This causes the push rod 51 in the sliding groove 5 to push the assembly of multiple mounting posts 25, driven wheels 26, and springs 27 in sequence. This causes the springs 27 to release in sequence, which in turn drives multiple driven wheels 26 to push the gear ring 28 to rotate in sequence. Consequently, the gear ring 28 is pushed by multiple springs 27 in sequence.

[0072] By releasing multiple springs 27 sequentially, the pushing force of the springs 27 on the toothed ring 28 at the same time is relatively small, resulting in a smaller rotational force on the toothed ring 28 and the scraper 2. Since the inner wall of the centrifuge chamber 11 is relatively smooth, the friction between the scraper 2 and the inner wall of the centrifuge chamber 11 is less than the pushing force when a single spring 27 is released. Therefore, while avoiding excessive force from the rotating scraper 2 and causing safety hazards, the scraper 2 can also scrape the water droplets on the inner wall of the centrifuge chamber 11. At the same time, the sequential release of multiple springs 27 effectively prolongs the rotation time of the scraper 2, thus continuously cleaning the water droplets generated on the inner wall of the centrifuge chamber 11 as the centrifuge chamber 11 returns to room temperature, thereby ensuring the cleaning effect of the water droplets in the centrifuge chamber 11.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-capacity refrigerated centrifuge, comprising: an outer shell, the outer shell is composed of a box and a flip cover hinged, and a control screen is installed on the outer shell, and a built-in control system is arranged in the outer shell; a centrifugal cavity, the centrifugal cavity is arranged in the inner part of the outer shell, and a motor is installed at the bottom of the centrifugal cavity, and a rotor is installed in the centrifugal cavity and detachably connected with the motor; a refrigeration assembly, the refrigeration assembly is used for cooling and refrigerating the inside of the centrifugal cavity, and the refrigeration assembly comprises an evaporator, a compressor, a condenser and matched pipelines, and refrigerant flows through the evaporator, the compressor, the condenser and the matched pipelines; a water tank, the water tank is installed in the inner cavity of the outer shell, and the water tank is located at the bottom of the centrifugal cavity, and the water tank is in communication with the bottom of the centrifugal cavity through a pipeline, and the condenser and the compressor extend into the inside of the water tank, and the condenser and the compressor are partially covered with a waterproof film in the inside of the water tank; characterized in that: a scraper, the scraper is installed in the centrifugal cavity, and the scraper is used for scraping the inner wall of the centrifugal cavity; a force storage assembly, the force storage assembly is installed in the centrifugal cavity, and the force storage assembly is used for driving the scraper to move in a circle in the centrifugal cavity, so as to scrape off the condensed water dissolved and condensed in the centrifugal cavity, and the force storage assembly comprises a transmission wheel, the transmission wheel is fixedly installed on the rotating shaft of the motor and rotates synchronously with the rotating shaft of the motor; a mounting column, the mounting column is installed in the force storage cavity, and a driven wheel is rotatably installed on the mounting column, and a clockwork spring is fixedly connected between the driven wheel and the mounting column, and the driven wheel is engaged with the transmission wheel; a tooth ring, the tooth ring is fixedly installed on the inner wall of the water retaining ring, and the tooth ring extends into the force storage cavity, and the tooth ring is in one-way transmission with the driven wheel; uniformly distributed guide grooves are arranged in the inside of the force storage cavity, a supporting ring is fixedly connected below the mounting ring of the centrifugal cavity, a sliding groove is arranged between adjacent two guide grooves, uniformly distributed push rods are elastically connected in the sliding groove through springs, the two ends of the push rod extend into the guide groove, a stop lever is fixedly installed on the supporting ring and extends into the sliding groove, and one of the push rods cooperates with the stop lever; a limiting block is installed at the bottom of the driven wheel, the limiting block is rotatably connected with the mounting column, the limiting block extends into the guide groove, the limiting block is a regular quadrangular prism in cross section, and rotating grooves are arranged on both sides of the guide groove which are parallel to the tooth ring.

2. A high capacity refrigerated centrifuge according to claim 1, characterised in that: The scraper is made of plastic material, and a plurality of scrapers are designed and jointly connected with a water retaining ring at the bottom, and the cross section of the scraper is designed as "L".

3. A high capacity refrigerated centrifuge according to claim 1, characterized in that: The force storage assembly further comprises a mounting ring, the mounting ring is installed at the bottom of the centrifugal cavity, the mounting ring is located between the rotating shaft of the motor and the water retaining ring, a force storage cavity is arranged in the inside of the mounting ring, and the two ends of the force storage cavity penetrate through the mounting ring.

4. A high capacity refrigerated centrifuge according to claim 3, characterised in that: The mounting column extends into the guide groove, and the part of the mounting column in the guide groove is a regular quadrangular prism, the guide groove is designed as "U", a transmission rod is rotatably connected between adjacent two guide grooves, the transmission rod is elastically connected with the force storage cavity through a torsion spring, and the transmission rod is used for pushing the mounting column to move in the guide groove.

5. A high capacity refrigerated centrifuge according to claim 4, characterised in that: The supporting ring and the mounting ring are elastically connected through springs, uniformly distributed guide blocks are fixedly installed on the supporting ring and extend into the guide groove, and the side of the guide block close to the mounting ring is designed as an inclined surface and used for pushing the mounting column to move in the guide groove.

6. A high capacity refrigerated centrifuge according to claim 5, characterised in that: The rotating groove is fixedly connected with a friction plate on the side close to the gear ring, and is designed with a smooth surface on the side away from the gear ring.

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