Centrifugal machine

Abstract

The utility model discloses a centrifugal machine, which relates to the technical field of centrifugal separation and comprises a shell, and a containing cavity is arranged in the shell. The rotor can be rotatably arranged in the accommodating cavity; the plurality of sleeves are all arranged on the rotor; the casing pipe comprises a pipe body and a semiconductor chilling plate, the semiconductor chilling plate is arranged on the pipe wall of the pipe body, and the pipe body is used for allowing the centrifugal pipe to be inserted, so that the heat absorption surface of the semiconductor chilling plate can abut against the centrifugal pipe in the pipe body, and the semiconductor chilling plate can reduce the temperature of a sample in the centrifugal pipe. The semiconductor chilling plate can continuously absorb heat of a sample in the centrifugal tube in the high-speed rotation process of the centrifugal tube, so that the temperature of the sample in the centrifugal tube can be reduced while the centrifugal tube keeps rotating at a high speed, biological components in the sample in the centrifugal tube are prevented from being damaged due to temperature rise of the accommodating cavity, and the service life of the centrifugal tube is prolonged. And the accuracy of a sample detection result is ensured.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal separation technology, and in particular to a centrifuge. Background Technology

[0002] Centrifuges are commonly used instruments in the field of medical testing. They generate centrifugal force through high-speed rotation to separate different components in biological samples such as blood. In existing technology, centrifuges have an internal chamber containing a rotor with multiple sleeves for inserting centrifuge tubes. When researchers need to separate samples from centrifuge tubes, they insert the tubes into the sleeves on the rotor. The rotor then drives the tubes to rotate at high speed, completing the separation process. During high-speed rotation, the rotor, sleeves, and tubes generate heat through friction with the air inside the chamber, causing the temperature inside the chamber to rise. This increased temperature can damage the biological components in the samples, potentially leading to deviations in subsequent sample testing results and reducing the accuracy of the results. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a centrifuge that can prevent the biological components in samples within centrifuge tubes from being destroyed due to increased temperature in the containment chamber, thus helping to ensure the accuracy of sample detection results.

[0004] A centrifuge according to an embodiment of the present invention includes a housing with a receiving cavity inside; a rotor rotatably disposed within the receiving cavity; and a plurality of sleeves disposed on the rotor. Each sleeve includes a tube body and a thermoelectric cooler, the thermoelectric cooler being disposed on the tube wall of the tube body. The tube body is used for inserting centrifuge tubes so that the heat-absorbing surface of the thermoelectric cooler can abut against the centrifuge tube inside the tube body. The thermoelectric cooler can absorb heat from the sample inside the centrifuge tube to reduce the temperature of the sample inside the centrifuge tube.

[0005] It has at least the following beneficial effects:

[0006] When researchers need to separate samples from centrifuge tubes, they insert the tubes into the tube housing the rotor. Once inserted, the heat-absorbing surface of the thermoelectric cooler on the tube wall comes into contact with the tube. After the tubes are positioned, the rotor drives the tube housing and the centrifuge tubes within it to rotate at high speed within the chamber. During this high-speed rotation, although friction occurs between the rotor, tube housing, and centrifuge tubes and the air within the chamber, causing the chamber temperature to rise, the thermoelectric cooler continuously absorbs heat from the sample within the centrifuge tube. This allows the sample temperature to remain relatively low while the centrifuge tube continues to rotate at high speed, preventing the destruction of biological components in the sample due to increased chamber temperature and thus ensuring the accuracy of sample analysis results.

[0007] According to an embodiment of the present invention, the centrifuge has a plurality of insertion slots on the rotor, and each of the plurality of insertion slots has an insertion hole on its bottom wall. The sleeve also includes a support plate, which is disposed on the outer wall of the tube body. The plurality of insertion holes are used for inserting the tube body, and the plurality of insertion slots are used for extending the support plate.

[0008] The centrifuge according to an embodiment of the present invention further includes a power supply module and a plurality of first conductive parts. The power supply module is disposed inside the housing, and the plurality of first conductive parts are respectively disposed in the plurality of insertion slots. The power supply module is electrically connected to the plurality of first conductive parts. The sleeve further includes a second conductive part, which is disposed on the support plate and electrically connected to the semiconductor cooling chip. The second conductive part can abut against the first conductive part so that the power supply module can supply power to the semiconductor cooling chip.

[0009] According to the centrifuge of this utility model embodiment, each of the plurality of insertion slots is provided with a limiting groove, and the support plate is provided with a limiting block. The limiting block can extend into the limiting groove and abut against the inner wall of the limiting groove, so as to restrict the tube body from rotating around its own axis and to keep the second conductive part abutting against the first conductive part.

[0010] According to the centrifuge of this utility model embodiment, both the tube body and the support plate are made of insulating material.

[0011] According to an embodiment of the present invention, the centrifuge has heat dissipation holes on the inner wall of the accommodating cavity, and the accommodating cavity is connected to the outside atmosphere through the heat dissipation holes.

[0012] The centrifuge according to an embodiment of the present invention further includes an air inlet fan. An air inlet hole is provided on the inner wall of the accommodating cavity. The air inlet fan is disposed inside the housing. The air inlet of the air inlet fan is connected to the outside atmosphere. The air outlet of the air inlet fan is connected to the accommodating cavity through the air inlet hole. The air inlet fan can send air from outside the housing into the accommodating cavity so that the air inside the accommodating cavity can circulate with the outside atmosphere and lower the temperature of the accommodating cavity.

[0013] The centrifuge according to an embodiment of the present invention further includes an exhaust fan. The heat dissipation hole is located above the air inlet. The exhaust fan is located inside the housing. The air inlet of the exhaust fan is connected to the accommodating cavity through the heat dissipation hole. The air outlet of the exhaust fan is connected to the outside atmosphere, so that the exhaust fan can draw the air in the accommodating cavity to the outside of the housing and reduce the temperature of the accommodating cavity.

[0014] According to an embodiment of the present invention, the centrifuge has a mounting hole on the tube wall, and the semiconductor cooling chip is installed in the mounting hole, wherein the heat dissipation surface of the semiconductor cooling chip can contact the air in the accommodating cavity.

[0015] According to the centrifuge of this utility model embodiment, the heat-absorbing surface of the semiconductor cooling chip is an arc surface, and the axis of the heat-absorbing surface coincides with the axis of the tube body.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the centrifuge structure according to an embodiment of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the centrifuge according to another embodiment of the present invention;

[0020] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the sleeve structure in the centrifuge according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the sleeve in the centrifuge according to an embodiment of the present invention;

[0023] Figure 6This is a schematic diagram of the sleeve in the centrifuge according to another perspective of this utility model embodiment;

[0024] Figure label:

[0025] Housing 100; Receiving cavity 110; Air inlet 120; Heat dissipation hole 130; Flip cover 140;

[0026] Rotor 200; Insertion hole 210; Insertion slot 220; Limiting slot 221; First conductive part 230;

[0027] Sleeve 300; tube body 310; semiconductor cooling chip 320; support plate 330; limiting block 331; second conductive part 340. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] refer to Figure 1 , Figure 4 and Figure 5 The centrifuge according to an embodiment of the present invention includes a housing 100, a rotor 200, and a plurality of sleeves 300.

[0032] The housing 100 has a receiving cavity 110, and the rotor 200 is rotatably disposed in the receiving cavity 110. Multiple sleeves 300 are disposed on the rotor 200. Each sleeve 300 includes a tube body 310 and a semiconductor cooling chip 320. The semiconductor cooling chip 320 is disposed on the tube wall of the tube body 310. The tube body 310 is used for inserting centrifuge tubes so that the heat-absorbing surface of the semiconductor cooling chip 320 can abut against the centrifuge tube inside the tube body 310. The semiconductor cooling chip 320 can absorb the heat of the sample inside the centrifuge tube to reduce the temperature of the sample inside the centrifuge tube.

[0033] The housing 100 has a receiving cavity 110, and the rotor 200 is rotatably disposed within the receiving cavity 110. The rotor 200 has multiple sleeves 300 for inserting centrifuge tubes. In this embodiment, the centrifuge also includes a drive motor. The output end of the drive motor is connected to the rotor 200, and the drive motor drives the rotor 200 to rotate at high speed within the receiving cavity 110, enabling the rotor 200 to drive the centrifuge tubes within the sleeves 300 to rotate at high speed, thereby completing the separation of samples within the centrifuge tubes. The sleeve 300 includes a tube body 310 and a semiconductor cooling chip 320, which is disposed on the tube wall of the tube body 310. It should be explained that the semiconductor cooling chip 320 is a cooling device based on the Peltier effect. Through the action of an electric current, it promotes heat transfer in a structure composed of two semiconductor materials with different conductivity, thereby absorbing heat on one side of the semiconductor cooling chip 320 and releasing heat on the other side to achieve a cooling effect. The side of the thermoelectric cooler 320 that absorbs heat is its heat-absorbing surface, and the side that releases heat is its heat-dissipating surface. The thermoelectric cooler 320 is a common cooling device, and its structure and operating principle will not be elaborated further here.

[0034] Understandably, when researchers need to separate samples from centrifuge tubes, they can insert the centrifuge tube into the tube body 310 of the sleeve 300 on the rotor 200. After the centrifuge tube is inserted into the tube body 310, the heat-absorbing surface of the thermoelectric cooler 320 on the tube wall of the tube body 310 can contact the centrifuge tube. After the researchers place the centrifuge tube, the rotor 200 will drive the tube body 310 and the centrifuge tube inside the tube body 310 to rotate at high speed in the containment cavity 110. During the high-speed rotation of the rotor 200, although the rotor 200, tube body 310, and centrifuge tube will rub against the air in the containment cavity 110, causing the temperature of the containment cavity 110 to rise, the thermoelectric cooler 320 can continuously absorb the heat of the sample inside the centrifuge tube during the high-speed rotation of the centrifuge tube. This allows the temperature of the sample inside the centrifuge tube to remain unchanged or even decrease while maintaining high-speed rotation, preventing the biological components in the sample from being destroyed due to the increase in temperature in the containment cavity 110, thus helping to ensure the accuracy of the sample detection results.

[0035] refer to Figure 2 and Figure 3The rotor 200 has multiple insertion slots 220, and each insertion slot 220 has an insertion hole 210 on its bottom wall. The sleeve 300 also includes a support plate 330, which is located on the outer wall of the tube body 310. The insertion holes 210 are for inserting the tube body 310, and the insertion slots 220 are for extending the support plate 330. Understandably, when researchers need to separate samples from centrifuge tubes, they can insert the tube body 310 into one of the insertion holes 210 on the rotor 200. After the tube body 310 is inserted into the insertion hole 210, the support plate 330 on the outer wall of the tube body 310 can extend into the insertion slot 220 and abut against the bottom wall of the insertion slot 220 to complete the installation of the tube body 310. Then, researchers can insert centrifuge tubes into the tube body 310 to complete subsequent centrifugation. During the high-speed rotation of the tube 310, the support plate 330 abuts against the inner wall of the insertion slot 220, thus supporting the tube 310 and preventing it from swaying significantly during high-speed rotation. When the tube 310 needs to be removed from the rotor 200, the experimenter can simply pull it out of the insertion hole 210. In this embodiment, the experimenter can insert the appropriate number of tubes 310 into the insertion holes 210 according to the number of centrifuge tubes. In this embodiment, multiple insertion slots 220 are arranged in a circumferential array around the axis of the rotor 200. The insertion slots 220 and insertion holes 210 are circular grooves and holes, respectively, and their axes coincide. In this embodiment, the rotor 200 has a tapered shape that gradually tapers from top to bottom, causing the multiple tubes 310 on the rotor 200 to be inclined.

[0036] refer to Figure 2 , Figure 3 , Figure 4 and Figure 6The centrifuge also includes a power supply module and multiple first conductive parts 230. The power supply module is located inside the housing 100, and the multiple first conductive parts 230 are respectively located in multiple insertion slots 220. The power supply module is electrically connected to the multiple first conductive parts 230. The sleeve 300 also includes a second conductive part 340, which is located on the support plate 330 and is electrically connected to the thermoelectric cooler 320. The second conductive part 340 can abut against the first conductive parts 230 so that the power supply module can supply power to the thermoelectric cooler 320. The power supply module is used to supply power to the thermoelectric cooler 320 on the tube body 310 inside the insertion hole 210. It is understood that when the experimenter needs to separate the sample in the centrifuge tube, the tube body 310 can be inserted into one of the insertion holes 210 on the rotor 200. After the tube body 310 is inserted into the insertion hole 210, the support plate 330 on the outer wall of the tube body 310 can extend into the insertion slot 220, and the second conductive part 340 on the support plate 330 will abut against the first conductive part 230 in the insertion slot 220, so that the power supply module and the semiconductor cooling chip 320 on the tube body 310 form a conductive circuit, enabling the power supply module to supply power to the semiconductor cooling chip 320. After the experimenter inserts the tube body 310 into the insertion hole 210, the drive motor can be turned on for separation processing. During the high-speed rotation of the rotor 200, the power supply module supplies power to the semiconductor cooling chip 320 on the tube body 310, enabling the semiconductor cooling chip 320 to absorb the heat of the sample in the centrifuge tube.

[0037] After the rotor 200 stops rotating, the power supply module stops supplying power to the thermoelectric cooler 320 on the tube 310. At this time, the thermoelectric cooler 320 stops absorbing heat, and the experimenter can directly pull the tube 310 out of the insertion hole 210, so that the second conductive part 340 on the support plate 330 disengages from the first conductive part 230 in the insertion slot 220. In this embodiment of the invention, the power supply module can simultaneously supply power to the thermoelectric coolers 320 on multiple tubes 310. As an embodiment of the invention, the power supply module includes a rechargeable battery, which is detachably connected to the rotor 200. The rechargeable battery is used to supply power to the thermoelectric coolers 320 on the tube 310 in the insertion hole 210. The rechargeable battery rotates with the rotor 200. When the rechargeable battery is depleted, it can be removed from the rotor 200 for charging. After charging is complete, the rechargeable battery can be reinstalled on the rotor 200.

[0038] In another embodiment of this utility model, the power supply module includes a power supply, multiple slip rings, and multiple brushes. The slip rings are all disposed on the rotor 200 and are electrically connected to multiple first conductive parts 230. The brushes are all disposed within the housing 100 and abut against the slip rings. The power supply is also electrically connected to the brushes. It is understood that after the tube 310 is inserted into the insertion hole 210 on the rotor 200, the second conductive part 340 on the support plate 330 abuts against the first conductive part 230 in the insertion slot 220. At this time, a conductive circuit is formed between the power supply, brushes, slip rings, first conductive part 230, second conductive part 340, and semiconductor cooling chip 320, enabling the power supply to supply power to the semiconductor cooling chip 320 on the tube 310. Slip rings and brushes are common electrical conductive components that enable the power supply to smoothly power the rotating semiconductor refrigeration chip 320. The structure and principle of slip rings and brushes will not be elaborated further here.

[0039] In this embodiment of the invention, the first conductive part 230 includes two metal sheets, and the second conductive part 340 includes two metal contacts. Both metal sheets are disposed on the inner bottom wall of the insertion slot 220 and are electrically connected to the power supply module. Both metal contacts are disposed on the support plate 330 and are electrically connected to the semiconductor cooling chip 320. The two metal contacts can abut against the two metal sheets respectively, enabling the power supply module to supply power to the semiconductor cooling chip 320 on the tube body 310. The two metal sheets are respectively a positive electrode metal sheet and a negative electrode metal sheet, and the two metal contacts are respectively a positive electrode metal contact and a negative electrode metal contact. The positive electrode metal contact abuts against the positive electrode metal sheet, and the negative electrode metal contact abuts against the negative electrode metal sheet. The metal sheets and metal contacts are common conductive components and will not be further described here. In this embodiment of the invention, both the tube body 310 and the support plate 330 are made of insulating material. Understandably, both the tube body 310 and the support plate 330 are made of insulating material so that experimenters can safely grasp the tube body 310 and the support plate 330 on the tube body 310.

[0040] refer to Figure 3 and Figure 6Each of the multiple insertion slots 220 is provided with a limiting groove 221, and the support plate 330 is provided with a limiting block 331. The limiting block 331 can extend into the limiting groove 221 and abut against the inner wall of the limiting groove 221 to restrict the tube body 310 from rotating around its own axis and to keep the second conductive part 340 abutting against the first conductive part 230. It can be understood that after the experimenter inserts the tube body 310 into the insertion hole 210 on the rotor 200, the support plate 330 can extend into the insertion slot 220, and the limiting block 331 on the support plate 330 will also extend into the limiting groove 221 on the insertion slot 220. During the high-speed rotation of the tube body 310 driven by the rotor 200, the limiting block 331 on the support plate 330 can abut against the inner wall of the limiting groove 221, so that the inner wall of the limiting groove 221 plays a limiting role on the limiting block 331 and the support plate 330, preventing the tube body 310 from rotating around its own axis, so that the second conductive part 340 and the first conductive part 230 can always remain in abutment, ensuring that the semiconductor cooling chip 320 can operate normally during the high-speed rotation of the tube body 310.

[0041] refer to Figures 1 to 3 The centrifuge has heat dissipation holes 130 on the inner wall of the cavity 110, which connects to the outside atmosphere. This allows the warmer air inside the cavity 110 to pass through the heat dissipation holes 130 and escape to the outside of the casing 100, thus lowering the temperature inside the cavity 110 and reducing its impact on the samples inside the centrifuge tubes. The centrifuge also includes an air inlet fan. The cavity 110 has an air inlet hole 120 on its inner wall, and the fan is located inside the casing 100. The fan inlet connects to the outside atmosphere, and the fan outlet connects to the cavity 110 through the air inlet hole 120. The fan draws air from outside the casing 100 into the cavity 110, allowing air circulation between the cavity and the outside atmosphere and lowering the temperature of the cavity 110. The centrifuge also includes an exhaust fan. The heat dissipation hole 130 is located above the air inlet 120. The exhaust fan is located inside the housing 100. The air inlet of the exhaust fan is connected to the accommodating cavity 110 through the heat dissipation hole 130. The air outlet of the exhaust fan is connected to the outside atmosphere, so that the exhaust fan can draw the air in the accommodating cavity 110 to the outside of the housing 100 and reduce the temperature of the accommodating cavity 110.

[0042] Understandably, when the drive motor is turned on, the intake and exhaust fans will also start simultaneously. The intake fan draws air from outside the housing 100 into the accommodating cavity 110 through the intake port 120, while the exhaust fan draws air from the accommodating cavity 110 out of the housing 100. The heat dissipation vent 130 is positioned above the intake port 120 to create a good ventilation path. Air from outside the housing 100 enters the accommodating cavity 110 through the intake port 120, absorbs heat within the cavity, and becomes hot air. This hot air then flows upwards and exits the cavity 110 through the heat dissipation vent 130, thereby lowering the temperature of the accommodating cavity 110.

[0043] refer to Figure 4 The tube body 310 has mounting holes on its wall, and the thermoelectric cooler 320 is installed in the mounting holes, allowing the heat dissipation surface of the thermoelectric cooler 320 to contact the air inside the accommodating cavity 110. In this embodiment, the thermoelectric cooler 320 is installed in the mounting holes on the tube body 310, such that the heat-absorbing surface of the thermoelectric cooler 320 faces inward towards the tube body 310, and the heat dissipation surface faces outward towards the tube body 310. This allows the heat dissipation surface of the thermoelectric cooler 320 to contact the air inside the accommodating cavity 110, enabling the thermoelectric cooler 320 to dissipate heat effectively. The heat-absorbing surface of the thermoelectric cooler 320 is an arc surface, and the axis of the heat-absorbing surface coincides with the axis of the tube body 310. In this embodiment, the thermoelectric cooler 320 is arc-shaped, and the heat-absorbing surface of the thermoelectric cooler 320 is an arc surface, resulting in a larger contact area between the heat-absorbing surface of the thermoelectric cooler 320 and the tube body 310, which is beneficial to improving the heat absorption effect of the thermoelectric cooler 320.

[0044] In this embodiment of the invention, the tube body 310 is provided with two semiconductor cooling chips 320, which are arranged in a circumferential array around the axis of the tube body 310. The support plate 330 on the outer wall of the tube body 310 is provided with two second conductive parts 340, and each insertion slot 220 is provided with two first conductive parts 230. The two second conductive parts 340 respectively abut against the two first conductive parts 230, which will not be further described here. In this embodiment of the invention, the housing 100 is also provided with a rotatable flip cover 140, which is used to open or close the upper end of the accommodating cavity 110.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A centrifuge, characterized in that, include: A housing (100) having a receiving cavity (110) inside; A rotor (200) is rotatably disposed within the accommodating cavity (110); Multiple sleeves (300) are provided on the rotor (200); The sleeve (300) includes a tube body (310) and a thermoelectric cooler (320). The thermoelectric cooler (320) is disposed on the tube wall of the tube body (310). The tube body (310) is used for inserting centrifuge tubes so that the heat-absorbing surface of the thermoelectric cooler (320) can abut against the centrifuge tube inside the tube body (310). The thermoelectric cooler (320) can absorb the heat of the sample inside the centrifuge tube to reduce the temperature of the sample inside the centrifuge tube.

2. The centrifuge according to claim 1, characterized in that: The rotor (200) is provided with a plurality of insertion slots (220), and each of the plurality of insertion slots (220) is provided with an insertion hole (210) on its bottom wall. The sleeve (300) also includes a support plate (330), which is provided on the outer wall of the tube body (310). The plurality of insertion holes (210) are used for the tube body (310) to be inserted, and the plurality of insertion slots (220) are used for the support plate (330) to extend into.

3. The centrifuge according to claim 2, characterized in that: It also includes a power supply module and a plurality of first conductive parts (230). The power supply module is disposed inside the housing (100), and the plurality of first conductive parts (230) are respectively disposed in the plurality of insertion slots (220). The power supply module is electrically connected to the plurality of first conductive parts (230). The sleeve (300) also includes a second conductive part (340). The second conductive part (340) is disposed on the support plate (330) and is electrically connected to the semiconductor cooling chip (320). The second conductive part (340) can abut against the first conductive part (230) so that the power supply module can supply power to the semiconductor cooling chip (320).

4. The centrifuge according to claim 3, characterized in that: Each of the multiple insertion slots (220) is provided with a limiting groove (221), and the support plate (330) is provided with a limiting block (331). The limiting block (331) can extend into the limiting groove (221) and abut against the inner wall of the limiting groove (221) to restrict the tube body (310) from rotating around its own axis and to keep the second conductive part (340) and the first conductive part (230) abutting against each other.

5. The centrifuge according to claim 4, characterized in that: Both the tube body (310) and the support plate (330) are made of insulating material.

6. The centrifuge according to claim 1, characterized in that: The inner wall of the accommodating cavity (110) is provided with heat dissipation holes (130), and the accommodating cavity (110) is connected to the outside atmosphere through the heat dissipation holes (130).

7. The centrifuge according to claim 6, characterized in that: It also includes an air intake fan. The inner wall of the accommodating cavity (110) is provided with an air inlet (120). The air intake fan is located inside the housing (100). The air inlet of the air intake fan is connected to the outside atmosphere. The air outlet of the air intake fan is connected to the accommodating cavity (110) through the air inlet (120). The air intake fan can send air from outside the housing (100) into the accommodating cavity (110) so that the air inside the accommodating cavity (110) can circulate with the outside atmosphere and reduce the temperature of the accommodating cavity (110).

8. The centrifuge according to claim 7, characterized in that: It also includes an exhaust fan. The heat dissipation hole (130) is located above the air inlet (120). The exhaust fan is located inside the housing (100). The air inlet of the exhaust fan is connected to the accommodating cavity (110) through the heat dissipation hole (130). The air outlet of the exhaust fan is connected to the outside atmosphere, so that the exhaust fan can draw the air in the accommodating cavity (110) to the outside of the housing (100) and reduce the temperature of the accommodating cavity (110).

9. The centrifuge according to claim 1, characterized in that: The tube body (310) has mounting holes on its tube wall, and the semiconductor cooling chip (320) is installed in the mounting holes. The heat dissipation surface of the semiconductor cooling chip (320) can contact the air in the accommodating cavity (110).

10. The centrifuge according to claim 1, characterized in that: The heat-absorbing surface of the semiconductor cooling chip (320) is an arc surface, and the axis of the heat-absorbing surface coincides with the axis of the tube body (310).

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