阅读说明：本技术 一种高速非冷冻离心机的冷却系统 (Cooling system of high-speed non-freezing centrifugal machine ) 是由 吴根威 梁湘 郝献文 于 2021-08-27 设计创作，主要内容包括：本发明公开了提供了一种高速非冷冻离心机的冷却系统,包括门盖部件、电机驱动部件、转头、主机密封圈、机壳部件、保护筒、中层板、离心腔、冷却风扇和离心腔密封圈,电机驱动部件内置于机壳部件的内部且动力输出端与转头相连接,主机密封圈安装于机壳部件的外围,保护筒内置于机壳部件的内壁上,中层板水平安装于机壳部件的内腔且上方形成有离心腔,离心腔密封圈安装于离心腔的底部,转头位于离心腔内,冷却风扇安装于机壳部件的右下角,上述各部件之间形成有冷却风道,带走高速非冷冻离心机在满负荷运行时产生的热量,避免了整机噪音的增加,同时兼顾了电机驱动部件在运行过程中的冷却,降低了生产成本。(The invention discloses a cooling system of a high-speed non-freezing centrifuge, which comprises a door cover part, a motor driving part, a rotary head, a main machine sealing ring, a machine shell part, a protective cylinder, a middle layer plate, a centrifugal cavity, a cooling fan and a centrifugal cavity sealing ring, wherein the motor driving part is arranged in the machine shell part, the power output end of the motor driving part is connected with the rotary head, the main machine sealing ring is arranged at the periphery of the machine shell part, the protective cylinder is arranged on the inner wall of the machine shell part, the middle layer plate is horizontally arranged in the inner cavity of the machine shell part, a centrifugal cavity is formed above the middle layer plate, the centrifugal cavity sealing ring is arranged at the bottom of the centrifugal cavity, the rotary head is positioned in the centrifugal cavity, the cooling fan is arranged at the lower right corner of the machine shell part, a cooling air duct is formed among the parts, the heat generated by the high-speed non-freezing centrifuge in the full-load operation is taken away, the increase of the noise of the whole centrifuge is avoided, and the cooling of the motor driving part in the operation process is taken into consideration, the production cost is reduced.)

1. A cooling system of a high-speed non-freezing centrifuge comprises a door cover component (100), a motor driving component (200), a rotating head (300), a main machine sealing ring (400), a machine shell component (500), a protective cylinder (600), a middle layer plate (700), a centrifugal cavity (800), a cooling fan (900) and a centrifugal cavity sealing ring (1000), and is characterized in that: place the inside and the power take off end of casing part (500) in motor drive part (200) and be connected with commentaries on classics (300), install in the periphery of casing part (500) host computer sealing washer (400), place in on the inner wall of casing part (500) in protection section of thick bamboo (600), well plywood (700) horizontal installation is formed with centrifugal chamber (800) in the inner chamber and the top of casing part (500), centrifugal chamber sealing washer (1000) are installed in the bottom of centrifugal chamber (800), it is located centrifugal chamber (800) to change (300), cooling fan (900) are installed in the lower right corner of casing part (500), are formed with the cooling duct between the above-mentioned each part.

2. The cooling system of a high-speed non-refrigerated centrifuge of claim 1, wherein: a gap (110) is formed between the door part (100) and the cabinet part (500), and the width of the gap (110) is preferably 3-7mm and the cooling air inlet is formed.

3. The cooling system of a high-speed non-refrigerated centrifuge of claim 2, wherein: the door cover component (100) is provided with a door cover sealing plate (120), the door cover sealing plate (120) adopts a plastic uptake process and is made of ABS.

4. The cooling system of a high-speed non-refrigerated centrifuge of claim 3, wherein: the door cover sealing plate (120) is provided with an air inlet (121) and an air duct circulation port (122); air intake (121) are located the regular kidney type notch that just is the symmetry of the both sides intermediate position of door closure shrouding (120), wind channel circulation mouth (122) are located the central point of door closure shrouding (120) and just are circular shape through-hole.

5. The cooling system of a high-speed non-refrigerated centrifuge of claim 1, wherein: the centrifugal cavity (800) is coaxial with the protective barrel (600), the distance between the outer wall of the centrifugal cavity (800) and the inner wall of the protective barrel (600) is 12-18mm, and a circumferential air duct (810) is formed.

6. The cooling system of a high-speed non-refrigerated centrifuge of claim 5, wherein: the protection cylinder (600) and the middle layer plate (700) are fixed in a welding mode, four arc air duct notches (710) are uniformly distributed on the middle layer plate (700), the four arc air duct notches (710) are located between the protection cylinder (600) and the centrifugal cavity (800), and the flow area of the four arc air duct notches is 4-8 times that of the air inlet (121).

7. The cooling system of a high-speed non-refrigerated centrifuge of claim 1, wherein: the cooling fan (900) belongs to an axial flow fan and has an air flow rate of 20-40 CFM, and the cooling fan (900) is arranged at the bottom of the right side of the enclosure part (500).

8. The cooling system of a high-speed non-refrigerated centrifuge of claim 7, wherein: the shell component (500) is provided with an air outlet (510) at a position opposite to the cooling fan (900), and the flow area of the air outlet (510) is 2-4 times that of the air inlet (121).

9. The cooling system of a high-speed non-refrigerated centrifuge of claim 8, wherein: the cooling air duct is provided with three seals, the three seals are respectively that the main machine sealing ring (400) is fixed on the machine shell part (500) in a nesting mode, the door cover sealing plate (120) presses the main machine sealing ring (400) and the machine shell part (500) to form a first seal (130), the main machine sealing ring (400) and the protection barrel (600) form a second seal (140) in a pressing mode, and the centrifugal cavity sealing ring (1000) and the centrifugal cavity (800) form a third seal (150) in a buckling mode.

10. The cooling system of a high-speed non-refrigerated centrifuge of claim 9, wherein: the main machine sealing ring (400) and the centrifugal cavity sealing ring (1000) are both made of nitrile rubber and are made of an injection molding process, and the Shore hardness of the main machine sealing ring and the centrifugal cavity sealing ring is 40-45 degrees.

Technical Field

The invention relates to the technical field of dual-purpose biochemical instruments, in particular to a cooling system of a high-speed non-freezing centrifugal machine.

Background

Centrifuges are machines that utilize centrifugal force to separate components of a mixture of liquid and solid particles or liquid and liquid. The centrifuge is mainly used for separating solid particles from liquid in suspension, or separating two liquids which have different densities and are insoluble with each other in emulsion (for example, cream is separated from milk); it can also be used to remove liquids from wet solids, such as by spin drying clothes in a washing machine; the special overspeed tubular separator can also separate gas mixtures with different densities; by utilizing the characteristic that solid particles with different densities or particle sizes have different settling speeds in liquid, some settling centrifuges can also grade the solid particles according to the densities or the particle sizes, and the centrifuges are various in types and comprise high-speed non-freezing centrifuges.

However, the conventional high-speed non-freezing centrifuge has the following problems in the use process: (1) during the operation of the high-speed non-freezing centrifuge, the rotor rubs with air to generate a large amount of heat, so that the temperature of a centrifugal cavity chamber and the temperature of test solution in the rotor are increased, and the temperature is increased beyond an allowable range due to heat accumulation after the high-speed non-freezing centrifuge operates for a long time, so that the centrifugal effect is influenced; (2) in the cooling technology of the current high-speed non-freezing centrifugal machine, the air duct is unreasonable in design, so that the temperature rise of test solution cannot meet the requirement of the industrial standard, and the problems that the noise of the whole machine is increased due to the air duct design and the like also exist. For this reason, a corresponding technical scheme needs to be designed to solve the existing technical problems.

Disclosure of Invention

Aiming at the technical problems, the invention provides a cooling system of a high-speed non-freezing centrifuge, which can effectively reduce the running temperature rise of the high-speed non-freezing centrifuge and simultaneously avoid the increase of the whole noise of the high-speed non-freezing centrifuge caused by open cooling; on the other hand, the cooling air duct can pass through the motor driving part, and cooling of the motor driving part in the operation process is considered.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a cooling system of high-speed non-freezing centrifuge, includes door closure part, motor drive part, turns round, host computer sealing washer, casing part, a protection section of thick bamboo, well plywood, centrifugal cavity, cooling fan and centrifugal cavity sealing washer, its characterized in that: a special cooling air duct is formed to take away heat generated by the high-speed non-freezing centrifuge in full-load operation.

The cooling air duct is beneficial to heat dissipation of the high-speed non-freezing centrifuge, noise caused by an open cooling mode of the whole centrifuge is not increased, the centrifugal effect of the high-speed non-freezing centrifuge is guaranteed, and the reliability of centrifugal test solution is improved; meanwhile, the cooling of the motor driving part in the operation process is also considered, and the safe operation of the motor driving part is ensured.

As a preferred embodiment of the present invention, the rotation speed of the high-speed non-freezing centrifuge is 10000-.

As a preferred embodiment of the present invention, the door cover component has a door cover sealing plate, the door cover sealing plate adopts a plastic uptake process, and the material is ABS; the main machine sealing ring is made of nitrile rubber and fixed on the shell part in an embedding mode, the door cover sealing plate presses the main machine sealing ring and the shell part to form a first seal, air is blocked from entering the centrifugal cavity through the path, and the whole machine noise of the high-speed non-freezing centrifugal machine is greatly reduced.

In a preferred embodiment of the present invention, the door member and the housing member have a gap, and the width of the gap is preferably 3 to 7mm as an inlet of cooling air according to the overall appearance and the cooling wind speed.

In a preferred embodiment of the present invention, the door cover sealing plate of the door cover member has an air inlet and an air duct flow port; the air inlets are positioned in the middle positions of two sides of the door cover sealing plate and are symmetrical regular kidney-shaped notches, and the flow area is determined by calculation according to the internal and external environment pressure difference, the heat productivity of the rotor and the flow resistance when the high-speed non-freezing centrifugal machine operates; the air duct circulation port is positioned in the center of the door cover sealing plate and is a circular through hole, and the diameter of the air duct circulation port is determined according to the circulation area of the air inlet; the high-speed non-freezing centrifugal machine drives the rotary head to rotate at a high speed through the motor driving part, so that the pressure intensity in the centrifugal cavity is reduced, cooling air enters the door cover part through the air inlet under the self-absorption action of the pressure intensity difference between the inner environment and the outer environment, enters the centrifugal cavity at the air passage opening, and performs sufficient heat exchange in the centrifugal cavity.

As a preferred embodiment of the invention, the main machine sealing ring and the protection cylinder form a second seal in a pressing manner, so that the integrity of air duct circulation is ensured; the centrifugal cavity is coaxial with the protection cylinder, and the distance between the outer wall of the centrifugal cavity and the inner wall of the protection cylinder is preferably 12-18mm to form a circumferential air duct; the protection cylinder and the middle layer plate are fixed by welding, 4 circular arc air duct notches are uniformly distributed on the middle layer plate and are positioned between the protection cylinder and the centrifugal cavity, and the flow area of the circular arc air duct notches is 4-8 times of that of the air inlet, so that the air speed is reduced, and the heat exchange sufficiency is ensured; after heat exchange is carried out on cooling air in the centrifugal cavity, the cooling air enters the circular arc air channel notch through the circumferential air channel, the circulation path of the cooling air is prolonged, the cooling time is prolonged, and the heat exchange sufficiency is ensured.

As a preferred embodiment of the present invention, the centrifugal cavity sealing ring is made of nitrile rubber, and forms a third seal with the centrifugal cavity in a fastening manner, so that air in the centrifugal cavity enters the designed air channel after heat exchange, thereby ensuring correctness of an air channel path, and preventing air at the lower part of the centrifugal cavity from entering the centrifugal cavity through the path, thereby causing failure of the designed air channel and increase of noise and vibration of the whole machine.

As a preferred embodiment of the present invention, the cooling fan belongs to an axial flow fan, and the air flow rate of the cooling fan is determined according to the rotation speed of the high-speed non-freezing centrifuge and the heat generation amount during the operation of the rotor, preferably 20CFM to 40CFM, and is arranged at the bottom of the right side of the casing part, the casing part is provided with an air outlet at the position opposite to the cooling fan, the hot air entering the notch of the circular arc air duct passes through the motor driving part to reach the air outlet under the action of the cooling fan, so as to form a complete cooling air duct, and the flow area of the air outlet is preferably 2 to 4 times of the flow area of the air inlet according to the requirements of the flow rate of the cooling fan and the outlet air speed.

Compared with the prior art, the invention has the following beneficial effects:

1. the cooling system of the high-speed non-freezing centrifuge designed by the invention has a reasonable and efficient cooling air duct, and can quickly take away heat, so that the high-speed non-freezing centrifuge meets the requirement of YY/T0657-2017 medical centrifuge on temperature rise of test solution, the increase of the noise of the whole centrifuge is avoided, meanwhile, the cooling of a motor driving part in the operation process is considered, the production cost is reduced, the application range of the rotating speed is wide, the stable operation of the centrifuge is ensured, and the cooling system has obvious progress.

2. The cooling air duct designed by the invention is beneficial to heat dissipation of the high-speed non-freezing centrifuge, does not increase the noise of the whole machine caused by an open cooling mode, ensures the centrifugal effect of the high-speed non-freezing centrifuge, increases the reliability of centrifugal test solution, simultaneously also considers the cooling of the motor driving part in the operation process, ensures the safe operation of the motor driving part, and is provided with three sealing structures in the machine body, thereby effectively improving the sealing property of the device and greatly reducing the whole machine noise of the high-speed non-freezing centrifuge.

Drawings

FIG. 1 is a schematic, diagrammatic illustration of an air duct of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is a partial view of a two-seal of the present invention;

FIG. 4 is a partial view of a third seal of the present invention;

FIG. 5 is a front elevational view of the door closure plate of the present invention;

FIG. 6 is a top view of a laminate of the present invention.

In the figure, 100-door cover component, 200-motor driving component, 300-rotary head, 400-main machine sealing ring, 500-machine shell component, 600-protective cylinder, 700-middle layer plate, 800-centrifugal cavity, 900-cooling fan, 1000-centrifugal cavity sealing ring, 110-gap, 120-door cover sealing plate, 121-air inlet, 122-air channel circulation port, 130-first sealing, 140-second sealing, 150-third sealing, 510-air outlet, 710-circular arc air channel notch and 810-circumferential air channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: as shown in fig. 1 and 2, a cooling system of a high-speed non-freezing centrifuge includes a door cover part 100, a motor driving part 200, a rotor 300, a main body sealing ring 400, a casing part 500, a protective cylinder 600, a middle layer plate 700, a centrifugal chamber 800, a cooling fan 900, and a centrifugal chamber sealing ring 1000.

The invention is preferentially applied to a high-speed non-freezing centrifuge with the rotation speed of 10000-; the door cover member 100 and the cabinet member 500 have a gap 110, and the width of the gap 110 is preferably 4mm as an inlet of cooling air according to the overall appearance and the cooling wind speed.

The door cover assembly 100 has a door cover plate 120, the door cover plate 120 is made of ABS material by using a plastic suction process, as shown in fig. 5, the door cover plate 120 has an air inlet 121 and an air duct flow port 122; the air inlet 121 is positioned in the middle of the two sides of the door cover sealing plate and is a symmetrical regular kidney-shaped notch, the flow area is determined by calculation according to the internal and external environment pressure difference, the heat productivity of the rotor 300 and the flow resistance when the high-speed non-freezing centrifugal machine operates, and the flow area is 2198.8mm²(ii) a The air channel opening 122 is located at the center of the door cover sealing plate 120, is a circular through hole with a diameter of 60mm, the motor driving part 200 drives the rotor 300 to rotate at a high speed, so that the pressure inside the centrifugal chamber 800 is reduced, under the self-priming action of the pressure difference between the internal environment and the external environment, the cooling air from the gap 110 enters the door cover part 100 through the air inlet 121, enters the centrifugal chamber 800 at the air channel opening 122, and performs sufficient heat exchange in the centrifugal chamber 800.

The centrifugal cavity 800 is coaxial with the protective cylinder 600, and the distance between the outer wall of the centrifugal cavity 800 and the inner wall of the protective cylinder 600 is 15mm, so that a circumferential air duct 810 is formed; the protection cylinder 600 and the middle layer plate 700 are welded and fixed, as shown in fig. 6, 4 circular arc air duct notches 710 are uniformly distributed on the middle layer plate 700 and located between the protection cylinder 600 and the centrifugal cavity 800, and the flow area of the circular arc air duct notches is 6 times of that of the air inlet 121, so that the air speed is reduced, and the heat exchange sufficiency is ensured; after heat exchange is performed in the centrifugal cavity 800, the cooling air enters the arc air channel notch 710 through the circumferential air channel 810, so that the circulation path of the cooling air is prolonged, the cooling time is prolonged, and the heat exchange sufficiency is ensured.

The cooling fan 900 belongs to an axial flow fan, the air flow is 29.6CFM, the cooling fan is arranged at the bottom of the right side of the machine shell part 500, the air outlet 510 is arranged at the position, opposite to the cooling fan 900, of the machine shell part 500, hot air entering the arc air channel notch 710 reaches the air outlet 510 through the motor driving part 200 under the action of the cooling fan 900, a complete cooling air channel is formed, and the flow area of the air outlet 510 is set to be 3.5 times of that of the air inlet 121 according to the flow of the cooling fan 900 and the requirement of the outlet air speed.

In order to ensure the integrity of the air duct and the effectiveness of cooling and reduce the noise of the whole machine, as shown in fig. 3 and 4, 3 seals are arranged on the path of the air duct, the material of the main machine sealing ring 400 is nitrile rubber, the main machine sealing ring 400 is made of an injection molding process, the shore hardness is 40-45, the main machine sealing ring 400 is fixed on the machine shell part 500 in a nesting mode, the door cover sealing plate 120 presses the main machine sealing ring 400 and the machine shell part 500 to form a first seal 130, air is blocked from entering the centrifugal cavity through the path, and the noise of the whole machine of the high-speed non-freezing centrifuge is greatly reduced; the main machine sealing ring 400 and the protective cylinder 600 form a second seal 140 in a pressing mode, so that the integrity of air duct circulation is ensured; the centrifugal cavity sealing ring 1000 is made of nitrile rubber, an injection molding process is adopted, the Shore hardness is 40-45, and the third seal 150 is formed by buckling with the centrifugal cavity 800, so that air in the centrifugal cavity 800 enters a designed air channel after heat exchange, the correctness of an air channel path is ensured, and the phenomenon that air at the lower part of the centrifugal cavity 800 enters the centrifugal cavity 800 through the path, so that the failure of the designed air channel and the increase of the noise and vibration of the whole machine are caused is avoided.

In sum, the cooling system of the high-speed non-freezing centrifuge has a reasonable and efficient cooling air duct, and can quickly take away heat, so that the high-speed non-freezing centrifuge meets the requirement of YY/T0657-2017 medical centrifuge on temperature rise of test solution, the increase of noise of the whole centrifuge is avoided, meanwhile, the cooling of a motor driving part in the operation process is considered, the production cost is reduced, the application range of the rotating speed is wide, the stable operation of the centrifuge is ensured, and the cooling system has obvious progress.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.