High-speed refrigerated centrifuge

Abstract

The invention relates to the field of centrifugal machine refrigeration, in particular to a high-speed freezing centrifugal machine which comprises a shell, a centrifugal chamber fixed inside the shell, a rotating head installed inside the centrifugal chamber, a freezing device installed outside the centrifugal chamber and a control unit used for controlling the rotating head and the freezing device to work. A direct blowing mechanism used for blowing air to the rotating head and a supporting mechanism used for supporting the rotating head are further installed in the centrifugal chamber. According to the direct blowing assembly on the direct blowing mechanism, the blowing nozzle is aligned to the rotating head and directly aligned to the rotating head for blowing, forced convection is formed on the surface of the rotating head, heat on the surface of the rotating head can be taken away more rapidly, the surface temperature of the rotating head is rapidly reduced, and the refrigerating efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of centrifuge refrigeration, in particular to a high-speed refrigerated centrifuge. Background Art

[0002] High-speed refrigerated centrifuge is an important equipment in the laboratory. It combines high-speed centrifugation and refrigeration technology and is widely used in the separation of biological samples, medical research, biotechnology and other fields. In the field of crop breeding, the centrifugal force generated by the high-speed rotation of the centrifuge is needed to extract DNA and other key biochemical substances from seed samples for genetic analysis and research. However, sensitive substances such as DNA, RNA and protein are prone to degradation or denaturation at high temperatures, thus affecting the accuracy of experimental results. Therefore, low-temperature control is required through refrigerated centrifuges to effectively avoid this problem.

[0003] At present, a Chinese patent application with publication number CN118527263A and publication date August 23, 2024 proposes a refrigerated centrifuge, comprising: a main body; a rotor, which is arranged in the main body and driven to rotate by a motor; a plurality of sleeves, which are arranged on the rotor and are suitable for reagent tubes to be placed axially; a refrigeration semiconductor, which is arranged at the bottom of the sleeve and is suitable for refrigerating the reagent in the sleeve; a generator, which is connected to the sleeve, and its input end is provided with fan blades, and its output end is electrically connected to the refrigeration semiconductor.

[0004] When in use, the motor in the main body drives the rotor to rotate, and the fan blades of the generator rotate under the influence of wind resistance, converting kinetic energy into electrical energy for the generator and supplying it to the refrigeration semiconductor. The cold surface of the refrigeration semiconductor contacts the casing to cool the reagent in the casing. In this way, the separation and refrigeration of the reagents can be achieved by the rotation of the motor, and the refrigeration semiconductor only cools near the casing to achieve regional cooling.

[0005] With regard to the above-mentioned related technologies, it is necessary to cool the reagent inside the rotor by installing additional motors and refrigeration semiconductors on the rotor, and the motors and refrigeration semiconductors need to rotate with the rotor. The rotation speed of the rotor in a high-speed centrifuge is usually high. Adding counterweights to the rotor when the rotor rotates at high speed will increase the burden on the rotor and the rotor shaft, creating potential dangers. Summary of the invention

[0006] In order to improve the refrigeration effect of the centrifuge without adding extra weight to the rotor, the present invention provides a high-speed refrigerated centrifuge.

[0007] The present invention provides a high-speed refrigerated centrifuge, which adopts the following technical solution: A high-speed refrigerated centrifuge, comprising a housing, a centrifugal chamber installed inside the housing, a rotor installed inside the centrifugal chamber for separating substances, a refrigeration device for cooling the inside of the centrifugal chamber, and a control unit for controlling the operation of the centrifuge, wherein a cold coil connected to the refrigeration device is closely attached to the outer peripheral surface of the centrifugal chamber; A mounting seat is also provided on the inner wall of the centrifugal chamber, and a direct blowing mechanism is provided on the mounting seat; The direct blowing mechanism comprises a mounting member, a fastening assembly, an inner fixing member and a direct blowing assembly, wherein the mounting member is mounted on the mounting seat, one end of the fastening assembly is connected to the mounting member, and the other end abuts against the inner wall of the centrifugal chamber, and the inner fixing member is mounted on a side of the mounting member close to the rotor; The direct blowing assembly includes a circulation pipe and a nozzle, the nozzle is mounted on the inner fixing part, an air inlet is arranged at the bottom of the mounting part, a gap is left between the mounting part and the inner wall, one end of the circulation pipe is connected to the top of the mounting part and communicated with the air inlet, and the other end is connected to the nozzle, and the nozzle is arranged to align with the rotating head.

[0008] By adopting this technical solution, the mounting piece is fixedly installed on the mounting seat inside the centrifugal chamber, and then the mounting piece and the centrifugal chamber are fixed by a fastening assembly. At this time, the blowing nozzle arranged on the direct blowing assembly is aimed at the rotor inside the centrifugal chamber. When the rotor inside the centrifugal chamber is working, the rotor will rotate at a high speed, and the blowing nozzle on the direct blowing assembly is aimed at one side of the rotor rotating at a high speed. A low-pressure area will be formed on the surface of the rotor due to the high-speed rotation of the rotor, thereby sucking the air in the blowing nozzle outward. The blowing nozzle is connected to the air inlet at the bottom of the mounting piece through a circulation pipe. The air enters from the air inlet at the bottom of the mounting piece, and flows to the circulation pipe through the gap between the mounting piece and the inner wall of the centrifugal chamber, and then flows to the blowing nozzle from the circulation pipe. When the high-speed refrigerated centrifuge is refrigerating, the refrigeration device first cools the inner wall of the centrifugal chamber through the cold coil, and the setting of the direct blowing mechanism can make the air flow pass through the gap between the mounting part and the inner wall of the centrifugal chamber through the air inlet on the mounting part to exchange heat, and the air convectioned in through the low-temperature inner wall of the centrifugal chamber is cooled, and then enters the nozzle through the circulation pipe above the mounting part, and the nozzle is set to the rotor so that the cooled cold air can be directly blown at the rotor, forming forced convection on the surface of the rotor, which can take away the heat from the surface of the rotor more quickly, quickly reduce the surface temperature of the rotor, and significantly improve the refrigeration efficiency; at the same time, the setting of the direct blowing component does not need to set a separate power mechanism for the nozzle, and the cooling efficiency can be improved without increasing additional consumption.

[0009] Optionally, the mounting member is arranged in a ring shape, the mounting member is penetrated inside the centrifugal chamber, a plurality of inner fixing members are arranged, the direct blowing components are arranged in one-to-one correspondence with the inner fixing members, and the inner fixing members are evenly distributed on the mounting member.

[0010] By adopting this technical solution, after the annular mounting sleeve is arranged inside the centrifugal chamber, the inside of the centrifugal chamber can be isolated into two areas. Since the cold coil will first cool down the inner wall of the centrifugal chamber, the area between the mounting piece and the inner wall of the centrifugal chamber is lower in temperature than the area between the mounting piece and the rotor. After the air enters the area between the mounting piece and the inner wall of the centrifugal chamber from the air inlet at the bottom of the mounting piece, the temperature can be cooled more quickly and more evenly. Then, the rotor is directly blown through the nozzle to cool it down. The uniform distribution of multiple direct blowing components inside the mounting piece can Direct blowing cooling of the rotor in different directions at the same time can, on the one hand, enhance the forced convection of low-temperature air on the rotor surface and further improve the cooling efficiency; on the other hand, when the rotor is blown on one side or at an asymmetric position, the wind blown by the direct blowing component may exert an unbalanced blowing force on the rotor, resulting in unbalanced force on the rotor when it rotates at high speed and then vibration. When the evenly distributed direct blowing components are used to blow the rotor, the force of the wind blown by the direct blowing components in all directions is balanced, thereby reducing the influence of the direct blowing components on the force balance of the high-speed rotating rotor.

[0011] Optionally, the direct blowing assembly also includes a position adjustment member, which includes a mounting portion, an extension portion and a rotating portion, wherein the mounting portion is arranged at one end of the extension portion, and the rotating portion is arranged at the other end of the extension portion, the mounting portion is fixedly mounted on the inner fixing member, and the blowing nozzle is mounted on the rotating portion.

[0012] By adopting this technical solution, the position adjustment component can adjust the position of the nozzle relative to the rotor. When the centrifuge is replaced with different rotors, the size and shape of the rotor are different. The distance and angle of the nozzle relative to the rotor can be adjusted respectively through the extension part and the rotating part. The setting of the position adjustment part enables the nozzle to adapt to different rotors for direct blowing cooling, which increases the use scenarios of the direct blowing component.

[0013] Optionally, a support mechanism is also provided inside the centrifugal chamber, and the support mechanism includes a plurality of support components and telescopic components that are arranged in one-to-one correspondence with the inner fixing member, the telescopic component is slidably arranged on the inner fixing member, one end of the support component is fixedly arranged on one end of the telescopic component close to the rotor, and the other end of the support component is used to support the rotor.

[0014] By adopting this technical solution, multiple telescopic parts and support assemblies on the support mechanism are arranged on the evenly distributed inner fixed parts. The telescopic parts of the support mechanism can flexibly adjust the distance of the support assembly relative to the rotor, so that the support mechanism can adapt to rotors of different sizes and shapes. The support assembly can use a non-contact support with a high-pressure air source to blow the rotor surface, or it can use a contact support with a roller attached to the rotor surface for joint rotation. The setting of such a support component can play a certain supporting role on the outer circumference of the rotor. Due to the setting of the air blowing component, the blowing force of the nozzle may not be uniform when blowing the rotor, which will affect the balance of the rotor during high-speed rotation. The setting of the support mechanism can provide effective support for the outer circumference of the rotor, increase the balance of the rotor during rotation, and reduce the influence of the airflow blown by the direct blowing component on the rotation of the rotor. At the same time, the rotor needs to follow strict balancing standards when in use. If no balancing is performed or the balancing is incorrect, it will cause strong vibration of the rotor and even cause the rotor to tilt or the shaft to break. The setting of the support mechanism can also reduce the vibration caused by the lack of balancing of the rotor, or other negative hazards such as the rotor tilting or breaking, because it increases the support for the outer circumference of the rotor.

[0015] Optionally, the supporting assembly includes a rotating member and a first elastic member, the first elastic member is fixedly disposed at an end of the telescopic member close to the rotating head, the rotating member is rotatably disposed on the first elastic member, and the rotating member abuts against the rotating head.

[0016] By adopting this technical solution, when the support assembly supports the rotor, the outer peripheral surface of the rotating member abuts against the outer peripheral surface of the rotor and rotates with the rotor. When the first elastic member encounters vibration of the rotor, it can retreat and absorb part of the vibration, thereby reducing the transmission of the vibration to the inner wall of the centrifugal chamber. In this way, the arrangement of the rotating member and the first elastic member can provide effective support for the rotor when the rotor rotates at high speed, while reducing the vibration generated when the rotor rotates, thereby extending the service life of the rotor.

[0017] Optionally, the rotating member includes a wheel portion and a conical portion, the conical portion is arranged on the outer circumference of the wheel portion, the wheel portion and the first elastic member are rotatably connected via a bearing, and the outer circumference of the conical portion abuts against the outer circumference of the rotating head.

[0018] By adopting this technical solution, the inner ring surface of the wheel part is fixedly connected to the outer ring surface of the bearing, the inner ring surface of the bearing is fixedly arranged on the first elastic member, and when the rotor rotates, the outer peripheral surface of the conical part is attached to the outer peripheral surface of the rotor to rotate. When such a centrifuge is used, a fixed-angle rotor is often used, and the outer peripheral surface of the fixed-angle rotor is generally inclined. The outer peripheral surface of the conical part can better fit the outer peripheral surface of the fixed-angle rotor, providing better support for the rotor.

[0019] Optionally, the support mechanism is further provided with a linkage adjustment component, the linkage adjustment component comprising a first linkage member, a second elastic member and an adjustment handle; The first linkage member includes a first rotating part and a plurality of first protrusions arranged one by one corresponding to the telescopic parts, the first protrusions are arranged on the inner circumference of the first rotating part, the first rotating part is rotatably arranged on the mounting member, the inner circumference of the first protrusion abuts against the telescopic part, the outer circumference of the first rotating part is evenly distributed with helical teeth, and the end of the adjustment handle is connected to the helical teeth on the first rotating part through a worm gear; A plurality of the second elastic members are arranged between the corresponding telescopic members and the inner fixing member, and the second elastic members have a tendency to make the telescopic members retract into the inner fixing member.

[0020] By adopting this technical solution, rotating the adjustment handle can drive the first linkage to rotate through the cooperation of the worm at the end of the adjustment handle and the helical teeth on the first linkage. When the first linkage rotates, the first protrusion arranged on the inner circumference of the first linkage can simultaneously push outward multiple telescopic parts abutting against the first protrusion, and control the supporting assembly at the end of the telescopic part to abut against the outer circumference of the rotating head; rotating the adjustment handle in the reverse direction can control the first linkage to rotate in the reverse direction, and the telescopic part retracts into the inner fixing part under the action of the second elastic part. In this way, by setting the first linkage member and the second elastic member, multiple telescopic members can be controlled to extend or retract outward at the same time, and the telescopic members can be controlled to extend at the same distance, so that when the support assembly supports the rotating head, the extended length of the support assembly is the same, and the supporting force of the rotating member in all directions when supporting the rotating head is the same, further enhancing the stability of the rotating head when it rotates; at the same time, the helical teeth on the worm and the first linkage member cooperate to have a one-way transmission property, so that the rotating member can self-lock after the adjustment handle drives the first linkage member, and after the support assembly is vibrated by the rotating head, the position of the support assembly will not change, so that the support assembly can provide strong support for the rotating head.

[0021] Optionally, the fastening assembly includes a plurality of outer fixing members and an adjusting member, the mounting member is provided with guide grooves corresponding to the plurality of outer fixing members one by one, the plurality of guide grooves are all arranged along the radial direction of the rotating head, the plurality of guide grooves are evenly distributed, the plurality of outer fixing members are slidably installed in the corresponding guide grooves, and the adjusting member is transmission-connected to the outer fixing member.

[0022] By adopting this technical solution, the distance that the outer fixing member extends in the guide groove can be controlled by the adjusting member, and the mounting member can be fixed by extending the outer fixing member to abut against the inner wall of the centrifugal chamber. In this way, the fastening assembly can fix the mounting member on the inner wall of the centrifugal chamber, preventing the direct blowing assembly and the support assembly from being loosely fixed to the inner wall of the centrifugal chamber when the direct blowing assembly and the support assembly are used to purge or support the rotor, thereby preventing the direct blowing assembly or the support assembly from moving and colliding with the rotor, thereby reducing the potential safety hazards caused by the loose fixing of the mounting member.

[0023] Optionally, the outer fixing member includes a connecting portion, an arc-shaped portion and a reinforcing portion, the connecting portion is slidably installed in the guide groove, the inner circumference of the arc-shaped portion is fixedly arranged at the end of the connecting portion away from the rotating head, and the reinforcing portion extends from the connecting portion to the edge of the inner circumference of the arc-shaped portion.

[0024] By adopting this technical solution, the arrangement of the arc-shaped portion can enable the outer fixing member to have a larger contact area when abutting against the inner wall of the centrifugal chamber, and the arrangement of the reinforcement portion can enable the outer peripheral surface of the arc-shaped portion to be evenly supported by the connecting portion, thereby reducing the deformation occurring when the arc-shaped portion abuts against the inner wall of the centrifugal chamber. The arrangement of the arc-shaped portion and the reinforcement portion can enable the outer fixing member to more firmly fix the mounting member to the inner wall of the centrifugal chamber, thereby further reducing the potential safety hazard caused by the insecure fixation of the mounting member.

[0025] Optionally, the fastening assembly is further provided with a linkage fixing assembly, and the linkage fixing assembly includes a second linkage member and a plurality of third elastic members; The second linkage member includes a second rotating part and a plurality of second protrusions which are arranged one by one corresponding to the outer fixing member, the second protrusions are arranged on the outer circumference of the second rotating part, the second rotating part is rotatably arranged on the mounting member, the outer circumference of the second protrusion abuts against the connecting portion of the outer fixing member, the inner circumference of the second rotating part is evenly distributed with helical teeth, a worm is arranged at the end of the adjusting member, and the adjusting member is connected to the helical teeth on the second rotating part through the worm; The plurality of third elastic members are arranged in a one-to-one correspondence inside the plurality of guide grooves, the third elastic members are respectively connected to the mounting member and the outer fixing member, and the third elastic members have a tendency to make the outer fixing member retract into the guide groove.

[0026] By adopting this technical solution, rotating the adjusting part can drive the worm on the adjusting part to rotate, and the helical teeth on the worm and the second linkage part can drive the second linkage part to rotate. Since the second linkage part is provided with a plurality of second protrusions corresponding to the outer fixing parts, during the rotation of the second linkage part, the second protrusion on the second linkage part will simultaneously push out the plurality of outer fixing parts abutting against the second protrusion from the mounting part, thereby fixing the mounting part on the inner wall of the centrifugal chamber; when the adjusting part is controlled to rotate in the reverse direction, the worm will drive the second linkage part to rotate in the reverse direction, and the second protrusion will no longer push out the plurality of outer fixing parts, and the plurality of outer fixing parts will retract into the guide groove under the action of the third elastic part, thereby canceling the fixation of the mounting part on the inner wall of the centrifugal chamber. In this way, by setting the second linkage member and the third elastic member, multiple outer fixing members can be controlled to extend outward or retract at the same time, eliminating the trouble of fixing the outer fixing members one by one; at the same time, because the second linkage member can control the outer fixing members to extend at the same time and the extending distance is the same, after the mounting member is fixed, the mounting member and the inner wall of the centrifugal chamber are coaxially arranged, when the support assembly supports the rotor, the third elastic member on the support assembly has the same extension length, and the supporting force of the rotating member in all directions when supporting the rotor is the same, further enhancing the stability of the rotor when rotating; finally, the second linkage member is driven by the worm on the adjusting member and the helical teeth on the second linkage member, and it also has a one-way transmission property, so that the rotating member can self-lock after the adjusting member drives the second linkage member, and after the adjusting member does not drive the rotating member, the rotating member will not change its position due to the vibration of the support assembly, and the stability is stronger.

[0027] In summary, the present invention includes at least one of the following beneficial technical effects: By arranging a mounting part inside the centrifugal chamber and installing a direct blowing mechanism on the mounting part, the direct blowing component on the direct blowing mechanism can first flow air through the low-temperature area of ​​the inner wall of the centrifugal chamber to cool the air, and then align the blowing nozzle with the rotor so that the cooled cold air can be directly blown at the rotor, forming forced convection on the surface of the rotor, which can take away the heat from the rotor surface more quickly, quickly reduce the rotor surface temperature, and significantly improve the refrigeration efficiency.

[0028] According to Bernoulli's principle, a low-pressure area will be formed on the surface of the rotor due to the high-speed rotation of the rotor, thereby sucking the air in the mouthpiece toward the direction of the rotor. There is no need to set up a separate power mechanism for the mouthpiece. Air can be blown onto the surface of the rotor without increasing additional consumption, thereby improving the cooling efficiency of the rotor.

[0029] By additionally arranging a supporting mechanism on the mounting part, the supporting mechanism can provide support on the outer peripheral surface of the rotor, thereby increasing the balance of the rotor when the rotor rotates and reducing the influence of the airflow blown out by the direct blowing component on the rotation of the rotor; at the same time, it can also reduce the vibration of the rotor, the tilting or breakage of the rotor due to failure to balance the rotor and other negative hazards caused by insufficient balance when the rotor rotates.

[0030] A fastening mechanism and a linkage fixing assembly are arranged on the mounting piece, and the linkage fixing assembly can simultaneously control the outer fixing piece on the fastening mechanism to extend or retract, so that the mounting piece is coaxially arranged with the inner wall of the centrifugal chamber after the fixing is completed, so that the subsequent supporting assembly has the same supporting force in all directions when supporting the rotor, and further enhances the stability of the rotor when rotating.

[0031] A linkage adjustment component is provided, and the linkage adjustment component can perform the same adjustment on the telescopic parts connected to the supporting component, thereby controlling the extended length of the telescopic parts to be the same, so that the supporting force of the rotating parts at the ends of the telescopic parts on the rotating head is the same in all directions, thereby further enhancing the stability of the rotating head when rotating. At the same time, a self-locking structure is provided, so that after the supporting component is vibrated by the rotating head, the position of the supporting component will not change, thereby providing stable support for the rotating head. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention when a direct blowing mechanism is installed; Figure 2 It is a schematic diagram of the overall structure of the embodiment of the present invention when the direct blowing mechanism is not installed; Figure 3 It is a schematic diagram of the overall structure of the direct blowing mechanism of the present invention; Figure 4 It is a schematic diagram of the explosion structure of the direct blowing mechanism of the present invention; Figure 5 yes Figure 3 A partial enlarged schematic diagram of part A; Figure 6 yes Figure 3 A partial enlarged schematic diagram of part B; Figure 7 is a schematic diagram of the overall structure of the linkage fixing assembly of an embodiment of the present invention; Figure 8 yes Figure 7 A partial enlarged schematic diagram of part D in the middle; Fig. 9 yes Figure 5 A partial enlarged schematic diagram of part C in the middle; Fig.10 It is a schematic diagram of the overall structure of the linkage adjustment component of an embodiment of the present invention.

[0033] Description of reference numerals: 1. housing; 2. centrifugal chamber; 21. inner wall; 22. mounting seat; 3. rotor; 4. refrigeration device; 5. control unit; 6. direct blowing mechanism; 61. mounting member; 611. air inlet; 62. inner fixing member; 63. direct blowing assembly; 631. circulation pipe; 632. blowing nozzle; 633. position adjusting member; 6331. mounting portion; 6332. extension portion; 6333. rotating portion; 64. fastening assembly; 641. guide groove; 642. outer fixing member; 6421. connecting portion; 6422. arc portion; 6423 , reinforcement part; 643, adjustment part; 644, linkage fixing assembly; 6441, second linkage part; 64411, second rotating part; 64412, second protrusion; 6442, third elastic part; 7, support mechanism; 71, support assembly; 711, rotating part; 7111, rotating wheel part; 7112, conical part; 712, first elastic part; 72, telescopic part; 73, linkage adjustment assembly; 731, first linkage part; 7311, first rotating part; 7312, first protrusion; 732, second elastic part; 733, adjustment handle. DETAILED DESCRIPTION

[0034] The following combination Figures 1 to 10 The present invention is described in further detail.

[0035] The embodiment of the present invention discloses a high-speed refrigerated centrifuge. Figure 1 to Figure 2 A high-speed refrigerated centrifuge mainly includes a shell 1, a centrifugal chamber 2 fixed inside the shell 1, a rotor 3 installed inside the centrifugal chamber 2, a direct blowing mechanism 6 installed inside the centrifugal chamber 2, a supporting mechanism 7 installed inside the centrifugal chamber 2, a refrigeration device 4 installed outside the centrifugal chamber 2 and a control unit 5 for controlling the operation of the rotor 3 and the refrigeration device 4, the refrigeration device 4 is connected to an outer coil, the outer coil is tightly attached to the outer peripheral surface of the centrifugal chamber 2, and the inside of the centrifugal chamber 2 is also connected to a motor for driving the rotor 3 to rotate.

[0036] Refer to the attached Figure 1 The centrifugal chamber 2 is cylindrically arranged, a driving motor is installed at the bottom of the centrifugal chamber 2, the output shaft of the driving motor is connected to the center position of the bottom of the centrifugal chamber 2, the output shaft of the driving motor and the centrifugal chamber 2 are coaxially arranged, and a mounting seat 22 is arranged on the inner wall 21 of the centrifugal chamber 2, and the mounting seat 22 is a limit block fixedly arranged on the inner wall 21 of the centrifugal chamber 2.

[0037] Refer to the attached Figure 2 To Attachment Figure 4The direct blowing mechanism 6 includes a mounting member 61, a fastening assembly 64 arranged on the mounting member 61, an inner fixing member 62 arranged on the mounting member 61, and a direct blowing assembly 63 arranged on the inner fixing member 62. The mounting member 61 is arranged in a cylindrical shape, and a ring-shaped mounting ring is arranged on the outer wall of the cylindrical mounting member 61. A limiting groove is arranged on the end surface of the bottom of the mounting ring to cooperate with the mounting seat 22. The limiting groove on the mounting ring is aligned with the mounting seat 22 and placed, so that the mounting member 61 can be preliminarily limited. The lower half of the mounting member 61 is evenly distributed with a plurality of air inlets 611 in the circumferential direction, and the upper half of the mounting member 61 is provided with an air outlet. The cylindrical mounting member 61 divides the inside of the centrifugal chamber 2 into two areas. The air inside the centrifugal chamber 2 can enter the area inside the mounting member 61 and the centrifugal chamber 2 from the area between the mounting member 61 and the rotor 3 through the air inlet 611 in the lower half of the mounting member 61, and flows out through the air outlet in the upper half of the mounting member 61 to form a cycle.

[0038] Refer to the attached Figure 4 To Attachment Figure 5 There are three inner fixing members 62, and the three inner fixing members 62 are provided with direct blowing components 63 in correspondence. The direct blowing components 63 include a position adjusting member 633, a blowing nozzle 632 and a circulation pipe 631. The three inner fixing members 62 are all connecting blocks fixedly arranged on the inner circumference of the mounting member 61. The mounting portion 6331 of the position adjusting member 633 is fixedly arranged on the lower half of the connecting block. The extension portion 6332 is a mechanical telescopic rod fixedly arranged on the mounting portion 6331 at one end. A threaded structure is arranged inside the extension portion 6332. By rotating the extension portion 6 332 can realize the extension and retraction of the extension part 6332, the rotating part 6333 is installed at the other end of the extension part 6332, the rotating part 6333 is connected to the extension part 6332 through a rotating shaft, and the rotating position of the rotating part 6333 is fixed by a fastening nut on the side, the nozzle 632 is installed on the rotating part 6333, the air inlet end of the nozzle 632 is connected to the air outlet on the upper part of the mounting part 61 through a circulation pipe 631, and the air outlet end of the nozzle 632 is facing the outer peripheral surface of the rotating head 3 after being adjusted by the extension part 6332 and the rotating part 6333.

[0039] In this way, when the rotor 3 and the refrigerating device 4 of the centrifuge are working, the cold coil of the refrigerating device 4 is tightly attached to the outer peripheral surface of the inner wall 21 of the centrifugal chamber 2 to cool the inner wall 21 of the centrifugal chamber 2. During the high-speed rotation of the rotor 3 of the centrifuge, the rotor 3 will drive the air on the surface to rotate rapidly. The air flow rate is fast in the area near the surface of the rotor 3 at the end of the blowing nozzle 632. According to the Bernoulli principle, a low-pressure area will be formed on the surface of the rotor 3 rotating at high speed, attracting air to flow outward from the blowing nozzle 632. The air inside the centrifuge enters the area between the mounting member 61 and the inner wall 21 of the centrifuge through the air inlet 611 of the mounting member 61 from the area between the mounting member 61 and the rotor 3. After being cooled by the inner wall 21 of the centrifuge, it is connected to the circulation pipe 631 from the air outlet above the mounting member 61 and flows out from the blowing nozzle 632. The cooled air is blown directly toward the rotor 3, forming forced convection on the surface of the rotor 3, taking away the heat on the surface of the rotor 3 more quickly, and quickly reducing the surface temperature of the rotor 3.

[0040] Refer to the attached Figure 6 To Attachment Figure 8The fastening assembly 64 includes three outer fixing members 642 slidably arranged on the mounting member 61, a linkage fixing assembly 644 rotatably arranged on the mounting member 61, and an adjusting member 643 for adjusting the rotation of the linkage fixing assembly 644. An annular baffle is also arranged on the upper end surface of the mounting ring arranged on the mounting member 61, and three square guide grooves 641 are also arranged on the annular baffle. The three guide grooves 641 are evenly arranged on the annular baffle. The three outer fixing members 642 are installed in the guide grooves 641 one by one. The outer fixing member 642 includes a connecting portion 6421 , arc-shaped portion 6422 and reinforcing portion 6423, the connecting portion 6421 is two square columns connected by screws, the two square columns are installed into the guide groove 641 from both ends of the guide groove 641, and then fixed together by screws, and can slide in the guide groove 641, the arc-shaped portion 6422 is an arc-shaped structure whose end size of the connecting portion 6421 is larger than the size of the guide groove 641, and the reinforcing portion 6423 is a reinforcing rib or thickening structure provided between the arc-shaped portion 6422 and the connecting portion 6421; the second linkage member 6441 and the third elastic member of the linkage fixing assembly 644 6442, the second linkage member 6441 includes a second rotating portion 64411 and a second protruding portion 64412, the second rotating portion 64411 is an annular ring sleeved on the inner annular surface of the mounting member 61, the second rotating portion 64411 is supported on the mounting ring of the mounting member 61, three second protruding portions 64412 are provided, and the second protruding portions 64412 are cam structures evenly arranged on the outer circumference of the annular ring, the outer circumference of the cam structure abuts against the connecting portion 6421 of the outer fixing member 642, and the inner circumference of the annular member is also evenly provided with oblique tooth grooves, and the adjusting member 64 The third elastic member 6442 is a thrust spring arranged inside the guide groove 641, and the two ends of the thrust spring are respectively fixed to the inner wall 21 of the guide groove 641 and the end of the connecting portion 6421 close to the second protruding portion 64412. When the outer fixing member 642 is not subjected to force, the thrust spring will move the outer fixing member 642 to the side close to the second protruding portion 64412 and retract it into the guide groove 641.

[0041] In this way, the worm at the end of the adjusting member 643 can be driven to rotate by rotating the adjusting member 643, and the cooperation between the worm and the helical tooth groove on the second linking member 6441 can drive the second linking member 6441 to rotate. Since the second linking member 6441 is provided with a plurality of second protrusions 64412 corresponding to the outer fixing members 642, during the rotation of the second linking member 6441, the second protrusions 64412 on the second linking member 6441 can simultaneously push the plurality of outer fixing members 642 abutting against the second protrusions 64412 from the mounting member 61, thereby pushing the mounting member 6441 to the desired position. 1 is fixed on the inner wall 21 of the centrifugal chamber 2. Since the second protrusion 64412 and the outer fixing member 642 have the same structure and size, the mounting member 61 and the centrifugal chamber 2 are fixed coaxially. When the control adjusting member 643 rotates in the opposite direction, the worm drives the second linkage member 6441 to rotate in the opposite direction, and the second protrusion 64412 no longer pushes the plurality of outer fixing members 642 outward, and the plurality of outer fixing members 642 retract into the guide groove 641 under the action of the third elastic member 6442, thereby canceling the fixing of the mounting member 61 on the inner wall 21 of the centrifugal chamber 2.

[0042] Refer to the attached Figure 3 and attached Fig. 9 The support mechanism 7 includes three telescopic members 72 slidably arranged on the inner wall 21 of the mounting member 61, a support assembly 71 fixedly arranged at the end of the telescopic member 72 in a one-to-one manner, and a linkage adjustment assembly 73 for adjusting the extension distance of the telescopic member 72. The three inner fixing members 62 are all connecting blocks fixedly arranged on the inner circumference of the mounting member 61, and the lower half of the connecting block is installed with a direct blowing assembly 63, and the upper half of the connecting block is provided with a square mounting slot. The three telescopic members 72 are square column structures installed in the mounting slots in a one-to-one manner. The square column structure is installed in the guide groove 641 and also has a circumferential limiting function to prevent the telescopic member 72 from rotating in the guide groove 641. The end of the telescopic member 72 away from the rotating head 3 is connected by screws. The support assembly 71 is a limit stop block to prevent the telescopic member 72 from falling off from the installation slot. The support assembly 71 includes a first elastic member 712 and a rotating member 711. The first elastic member 712 is a sleeve structure with a spring arranged inside. One end of the first elastic member 712 is connected to the other end of the telescopic member 72. The other end of the first elastic member 712 is provided with a circular hole. The rotating member 711 is rotatably installed in the circular hole through a pin shaft. A high-speed bearing is also provided between the rotating member 711 and the pin shaft. The rotating member 711 includes a wheel portion 7111 and a tapered portion 7112. The wheel portion 7111 is a roller rotatably installed on the pin shaft. The tapered portion 7112 is an inclined surface structure arranged on the outer peripheral surface of the wheel portion 7111, and the inclined surface structure is made of flexible material.

[0043] Such a setting of the support component 71 can play a certain supporting role on the outer peripheral surface of the rotor 3, increase the balance of the rotor 3 when it rotates, and reduce the influence of the airflow blown out by the direct blowing component 63 on the rotation of the rotor 3; at the same time, it can also reduce the vibration caused by the unbalanced rotor 3, or other negative hazards such as the tilting and breakage of the rotor 3.

[0044] In other embodiments, the support component 71 may also be a blowing nozzle connected to a high-pressure air source, which provides support force for the rotor 3 by blowing high-pressure air on the surface of the rotor 3. The use of non-contact support can also reduce friction.

[0045] Refer to the attached Fig.10 The linkage adjustment assembly 73 includes a first linkage member 731 rotatably arranged on the mounting member 61, a second elastic member 732 and an adjustment handle 733 arranged one by one with the telescopic member 72, the first linkage member 731 includes a first rotating portion 7311 and a first protruding portion 7312 arranged in a circular shape, the first rotating portion 7311 is rotatably arranged on the mounting member 61 and supported on the second linkage member 6441, and three first protruding portions 7312 are arranged, and the three first protruding portions 7312 are cam structures evenly arranged on the inner circumference of the first rotating portion 7311, and the inner circumference of the cam structure is The blocking block on the telescopic member 72 is abutted, and a helical tooth structure is evenly distributed on the end face above the first rotating part 7311. The end of the adjusting handle 733 is equipped with a worm gear in cooperation with the helical tooth structure on the first rotating part 7311. The worm gear and the helical tooth structure are meshed. The second elastic member 732 is a thrust spring sleeved on the telescopic member 72. The two ends of the thrust spring are respectively abutted against the side wall and the blocking member of the mounting member 61. When the telescopic member 72 is not subjected to force, the thrust spring will push the telescopic member 72 in the direction away from the rotating head 3, so that the telescopic member 72 drives the supporting assembly 71 to move in the direction away from the rotating head 3.

[0046] In this way, rotating the adjustment handle 733 can drive the first linkage 731 to rotate through the cooperation of the worm gear at the end of the adjustment handle 733 and the helical tooth groove on the first linkage 731. When the first linkage 731 rotates, the first protrusion 7312 set on the inner circumference of the first linkage 731 can simultaneously push outward multiple telescopic members 72 abutting against the first protrusion 7312, and control the support assembly 71 at the end of the telescopic member 72 to abut against the outer circumference of the rotating head 3; rotating the adjustment handle 733 in the reverse direction can control the first linkage 731 to rotate in the reverse direction, and the telescopic member 72 retracts into the inner fixing member 62 under the action of the second elastic member 732.

[0047] The implementation principle of a high-speed refrigerated centrifuge in an embodiment of the present invention is as follows: when in use, first align the mounting member 61 with the mounting seat 22 on the inner wall 21 of the centrifugal chamber 2 for preliminary limiting, then rotate the adjusting member 643 in the fastening assembly 64 to control the linkage fixing assembly 644 to rotate, so that the outer fixing member 642 extends out from the mounting member 61. Since the adjusting member 643 and the linkage fixing assembly 644 are driven by the worm and the helical gear, they are self-locking. Therefore, after adjusting the outer fixing member 642 to extend and fix on the inner wall 21 of the centrifugal chamber 2, the adjusting member 643 can be loosened to complete the fixation. Then adjust the position adjusting member 633 on the direct blowing assembly 63 so that the blowing nozzle 632 of the direct blowing assembly 63 can be aligned with the rotor 3 for blowing. Finally, rotate the adjusting handle 733 on the linkage adjusting assembly 73 to control the first linkage member 731 to rotate, so that the telescopic member 72 extends to abut the supporting assembly 71 against the inner wall 21 of the rotor 3. The support assembly 71 for the rotor 3 can be completed. Since the adjustment handle 733 and the first linkage 731 also use a worm and a helical tooth groove drive and are self-locking, there is no need to worry about the position of the support assembly 71 changing when supporting the rotation; when the rotor 3 inside the centrifugal chamber 2 is working, the rotor 3 will rotate at a high speed, and the blowing nozzle 632 on the direct blowing assembly 63 is aimed at the rotor 3 rotating at a high speed. The surface of the rotor 3 will form a low-pressure area due to the high-speed rotation of the rotor 3, and the air in the blowing nozzle 632 will be sucked outward. The blowing nozzle 632 is connected to the air inlet 611 at the bottom of the mounting member 61 through the circulation pipe 631. The air enters from the air inlet 611 at the bottom of the mounting member 61, and flows to the circulation pipe 631 through the gap between the mounting member 61 and the inner wall 21 of the centrifugal chamber 2, and then flows from the circulation pipe 631 to the blowing nozzle 632, forming forced convection on the surface of the rotor 3, and quickly taking away the heat from the surface of the rotor 3.

[0048] In summary, the setting of the direct blowing mechanism 6 can form forced convection on the surface of the rotor 3, take away the heat from the surface of the rotor 3 more quickly, and significantly improve the refrigeration efficiency; at the same time, the direct blowing component 63 does not need to set a separate power mechanism for the blowing nozzle 632, and the cooling efficiency can be improved without increasing additional consumption; when the evenly distributed direct blowing components 63 are used to blow the rotor 3, the force of the wind blown by the direct blowing components 63 in all directions on the rotor 3 is balanced, reducing the influence of the direct blowing components 63 on the force balance of the high-speed rotating rotor 3; and the setting of the supporting mechanism 7 can provide effective support for the rotor 3 on the outer peripheral surface, increase the balance of the rotor 3 when rotating, and reduce the influence of the airflow blown by the direct blowing component 63 on the rotation of the rotor 3; at the same time, it can also reduce the vibration caused by the unbalanced rotor 3, or other negative hazards such as the tilting and breaking of the rotor 3; the setting of the linkage fixing component 644 can control multiple outer fixings 642 to extend outward or retract at the same time, eliminating the trouble of fixing the outer fixings 642 one by one; at the same time, due to the second linkage component 644 1 can control the outer fixing member 642 to extend at the same time and the extending distance is the same, so that the mounting member 61 and the inner wall 21 of the centrifugal chamber 2 are coaxially arranged, when the support assembly 71 supports the rotor 3, the supporting force of the rotating member 711 in all directions is the same when supporting the rotor 3, further enhancing the stability of the rotor 3 when rotating; the linkage adjustment assembly 73 can control multiple telescopic members 72 to extend outward or retract at the same time, and control the extending distance of the telescopic members 72 to be the same, so that when the support assembly 71 supports the rotor 3, the extending length of the support assembly 71 is the same, and the supporting force of the rotating member 711 in all directions is the same when supporting the rotor 3, further enhancing the stability of the rotor 3 when rotating; the second linkage member 6441 and the first linkage member 731 have a one-way transmission property through the cooperation of the worm and the helical tooth groove, so that the second linkage member 6441 and the first linkage member 731 can be self-locking, and the second linkage member 6441 and the first linkage member 731 will not change the position of the rotating member 711 due to the vibration of the mounting member 61, and the stability is stronger.

[0049] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed refrigerated centrifuge, comprising a housing (1), a centrifugal chamber (2) installed inside the housing (1), a rotor (3) installed inside the centrifugal chamber (2) for separating substances, a refrigeration device (4) for cooling the inside of the centrifugal chamber (2), and a control unit (5) for controlling the operation of the centrifuge, wherein a cold coil connected to the refrigeration device (4) is in close contact with the outer peripheral surface of the centrifugal chamber (2), and the centrifugal chamber (2) is characterized in that: A mounting seat (22) is also provided on the inner wall (21) of the centrifugal chamber (2), and a direct blowing mechanism (6) is provided on the mounting seat (22); The direct blowing mechanism (6) comprises a mounting member (61), a fastening assembly (64), an inner fixing member (62) and a direct blowing assembly (63); the mounting member (61) is mounted on the mounting seat (22); one end of the fastening assembly (64) is connected to the mounting member (61) and the other end abuts against the inner wall (21) of the centrifugal chamber (2); and the inner fixing member (62) is mounted on a side of the mounting member (61) close to the rotor (3); The direct blowing assembly (63) comprises a circulation pipe (631) and a blowing nozzle (632), wherein the blowing nozzle (632) is mounted on the inner fixing member (62), an air inlet (611) is provided at the bottom of the mounting member (61), a gap is left between the mounting member (61) and the inner wall (21), one end of the circulation pipe (631) is connected to the top of the mounting member (61) and communicates with the air inlet (611), and the other end is connected to the blowing nozzle (632), and the blowing nozzle (632) is arranged to align with the rotating head (3).

2. A high-speed refrigerated centrifuge according to claim 1, characterized in that: The mounting member (61) is arranged in an annular shape, and the mounting member (61) is inserted into the interior of the centrifugal chamber (2). A plurality of inner fixing members (62) are provided, and the direct blowing components (63) are arranged in a one-to-one correspondence with the inner fixing members (62), and the inner fixing members (62) are evenly distributed on the mounting member (61).

3. A high-speed refrigerated centrifuge according to claim 2, characterized in that: The direct blowing assembly (63) further comprises a position adjusting member (633), wherein the position adjusting member (633) comprises a mounting portion (6331), an extension portion (6332) and a rotating portion (6333), wherein the mounting portion (6331) is arranged at one end of the extension portion (6332), and the rotating portion (6333) is arranged at the other end of the extension portion (6332), the mounting portion (6331) is fixedly mounted on the inner fixing member (62), and the blowing nozzle (632) is mounted on the rotating portion (6333).

4. A high-speed refrigerated centrifuge according to any one of claims 2 to 3, characterized in that: A support mechanism (7) is further provided inside the centrifugal chamber (2), the support mechanism (7) comprising a plurality of support assemblies (71) and telescopic members (72) each of which is arranged in a one-to-one correspondence with the inner fixing member (62), the telescopic member (72) being slidably arranged on the inner fixing member (62), one end of the support assembly (71) being fixedly arranged at one end of the telescopic member (72) close to the rotor (3), and the other end of the support assembly (71) being used for supporting the rotor (3).

5. A high-speed refrigerated centrifuge according to claim 4, characterized in that: The support assembly (71) comprises a rotating member (711) and a first elastic member (712); the first elastic member (712) is fixedly arranged at an end of the telescopic member (72) close to the rotating head (3); the rotating member (711) is rotatably arranged on the first elastic member (712); and the rotating member (711) is in contact with the rotating head (3).

6. A high-speed refrigerated centrifuge according to claim 5, characterized in that: The rotating member (711) comprises a wheel portion (7111) and a conical portion (7112); the conical portion (7112) is arranged on the outer peripheral surface of the wheel portion (7111); the wheel portion (7111) and the first elastic member (712) are rotatably connected via a bearing; the outer peripheral surface of the conical portion (7112) abuts against the outer peripheral surface of the rotary head (3).

7. A high-speed refrigerated centrifuge according to claim 4, characterized in that: The support mechanism (7) is also provided with a linkage adjustment component (73), and the linkage adjustment component (73) comprises a first linkage member (731), a second elastic member (732) and an adjustment handle (733); The first linkage member (731) comprises a first rotating portion (7311) and a plurality of first protrusions (7312) arranged in one-to-one correspondence with the telescopic member (72); the first protrusions (7312) are arranged on the inner circumferential surface of the first rotating portion (7311); the first rotating portion (7311) is rotatably arranged on the mounting member (61); the inner circumferential surface of the first protrusion (7312) abuts against the telescopic member (72); the outer circumferential surface of the first rotating portion (7311) is evenly distributed with helical teeth; and the end of the adjustment handle (733) is transmission-connected to the helical teeth on the first rotating portion (7311) via a worm; A plurality of the second elastic members (732) are arranged between the corresponding telescopic members (72) and the inner fixing member (62), and the second elastic members (732) have a tendency to cause the telescopic members (72) to retract into the inner fixing member (62).

8. A high-speed refrigerated centrifuge according to any one of claims 2 to 3, characterized in that: The fastening assembly (64) comprises a plurality of outer fixing members (642) and an adjusting member (643); the mounting member (61) is provided with guide grooves (641) arranged one-to-one in correspondence with the plurality of outer fixing members (642); the plurality of guide grooves (641) are arranged along the radial direction of the rotating head (3); the plurality of guide grooves (641) are evenly distributed; the plurality of outer fixing members (642) are slidably mounted in the corresponding guide grooves (641); and the adjusting member (643) is drivingly connected to the outer fixing member (642).

9. A high-speed refrigerated centrifuge according to claim 8, characterized in that: The outer fixing member (642) comprises a connecting portion (6421), an arcuate portion (6422) and a reinforcing portion (6423); the connecting portion (6421) is slidably mounted in the guide groove (641); the inner circumferential surface of the arcuate portion (6422) is fixedly arranged at the end of the connecting portion (6421) away from the rotating head (3); and the reinforcing portion (6423) extends from the connecting portion (6421) to the edge of the inner circumferential surface of the arcuate portion (6422).

10. A high-speed refrigerated centrifuge according to claim 9, characterized in that: The fastening assembly (64) is also provided with a linkage fixing assembly (644), wherein the linkage fixing assembly (644) comprises a second linkage member (6441) and a plurality of third elastic members (6442); The second linkage member (6441) comprises a second rotating portion (64411) and a plurality of second protrusions (64412) arranged in one-to-one correspondence with the outer fixing member (642); the second protrusions (64412) are arranged on the outer peripheral surface of the second rotating portion (64411); the second rotating portion (64411) is rotatably arranged on the mounting member (61); the outer peripheral surface of the second protrusion (64412) abuts against the connecting portion (6421) of the outer fixing member (642); the inner peripheral surface of the second rotating portion (64411) is evenly distributed with helical teeth; a worm is arranged at the end of the adjusting member (643); the adjusting member (643) is connected to the helical teeth on the second rotating portion (64411) through the worm; The plurality of third elastic members (6442) are arranged one by one inside the plurality of guide grooves (641); the third elastic members (6442) are respectively connected to the mounting member (61) and the outer fixing member (642); and the third elastic members (6442) have a tendency to cause the outer fixing member (642) to retract into the guide groove (641).

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