CN101161354B - High speed low temperature centrifugal machine - Google Patents
High speed low temperature centrifugal machine Download PDFInfo
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- CN101161354B CN101161354B CN2007101924257A CN200710192425A CN101161354B CN 101161354 B CN101161354 B CN 101161354B CN 2007101924257 A CN2007101924257 A CN 2007101924257A CN 200710192425 A CN200710192425 A CN 200710192425A CN 101161354 B CN101161354 B CN 101161354B
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Abstract
The present invention discloses a high-speed low-temperature centrifugal machine which comprises a machine body (1), a rotor (6) installed on the machine body (1), a centrifugal cavity (8) and a temperature control device, an air drafting blade (4) is arranged at the base of the rotor (6), and an air duct (7) which is corresponding to the air drafting blade (4) is arranged at the centrifugal cavity (8). The outlet of the air duct (7) is arranged with a noise-abatement equipment (2). The temperature control device is connected with the PID control device, namely the data processor is connected with the digital high-speed temperature measuring sensor, and the temperature display is connected with the PID control that is connected with the actuating device. The invention is a high-speed low-temperature centrifugal machine with the advantages of low running noise, high temperature control precision, simple structure, reliable performance and convenient manufacturing.
Description
Technical field
The present invention relates to a kind of centrifuge, particularly relate to a kind of high speed low temperature centrifugal machine.
Background technology
At biology, few in sample size, require extensive use high speed low temperature centrifugal machine in the big experimental work of centrifugal force in agricultural sciences and the clinic study, use also very extensive in research and production units such as food hygiene, environmental protection.The basic structure of high speed low temperature centrifugal machine is to be provided with motor and rotor thereof on body, is provided with door closure and sealing embedding on body, is formed with the centrifugal chamber corresponding with rotor in body.Present homemade centrifuge speed mostly can only reach in 10,000 commentaries on classics, lag far behind like product with other countries at technical elements, several families can produce supercentrifuge, but all the ubiquity noise is big, defectives such as temperature control precision is low, can't satisfy the demand of domestic market, China still relies on import in the field of many use centrifuges.The development difficult point of supercentrifuge is noise and temperature control precision, 1, noise: generating noise is except that the moving mechanical reason of dynamic balancing vibration damping, more main cause is violent friction and producing between high speed rotary course rotor and air, because the resistance that air produces rotor, make rotor speed high more big more, thereby noise is big more with friction air.There is minority producer to utilize vavuum pump to make centrifugal chamber reach certain negative pressure at present, this measure can reduce the friction of air and rotor really, but the instrument cost height is simultaneously because vavuum pump itself also is a noise source, so this measure is not ideal to reducing anti noise.2, temperature control precision, present most producers adopt interval control mode substantially, because relatively lagging behind of temperature and executing agency makes temperature accuracy be difficult to control accurately, the conventional control method of other producers generally can only be accurate to temperature control ± the 2-3 degree.
Summary of the invention
Technical problem to be solved by this invention provides the high speed low temperature centrifugal machine that a kind of running noise is low, temperature control precision is high.
In order to solve the problems of the technologies described above, high speed low temperature centrifugal machine provided by the invention, comprise body, be installed in rotor and centrifugal chamber on the body, and attemperating unit, be provided with the exhausting blade in described rotor bottom, on described centrifugal chamber, be provided with and the corresponding wireway of described exhausting blade, be provided with silencing apparatus in described wireway exit.
Described attemperating unit is connected with the PID control device, and data processor is connected with the digital high-speed temperature transducer, temperature shows and the PID control connection PID control connection executing agency.
Adopt the high speed low temperature centrifugal machine of above-mentioned technology, in the rotor process, rotor bottom is processed into the exhausting foliaceous, when centrifuge turns round, air in the centrifugal chamber is taken out by the exhausting blade and is made centrifugal chamber produce negative pressure, rotating speed high negative pressure more is big more, rotor and windage are more little, and noise is also just more little, and the negative pressure centrifuge is than generic centrifuge noise decline 10-20dB.Attemperating unit is connected with the PID control device, i.e. PID control infinitely near method, as long as temperature does not reach the control point, will not stop to operate executing agency and make temperature control infinitely near the control point, improved control accuracy of temperature greatly.Adopt the method temperature accuracy control can be accurate to ± 0.2 degree.
The present invention can be widely used in biology, agricultural sciences and clinic study, and sample size is few, require the big experimental work of centrifugal force.Performance significantly acts in the research of genetic engineering, protein nucleic acid, and separates with functional study, DNA enzyme reaction, gene segment at the DNA level structure, in the experiments such as recovery embryo protein application is arranged all.Use also very extensive in research and production units such as food hygiene, environmental protection.
In sum, the present invention is that a kind of running noise is low, temperature control precision is high and simple in structure, dependable performance, easily manufactured high speed low temperature centrifugal machine.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a temperature control FB(flow block) of the present invention.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, on body 1, be provided with motor 9 and rotor 6 thereof, on body 1, be provided with door closure 5 and sealing embedding 3, in body 1, be formed with the centrifugal chamber 8 corresponding with rotor 6, on body 1, also be provided with attemperating unit, be provided with exhausting blade 4 in rotor 6 bottoms, on centrifugal chamber 8, be provided with the wireway 7 corresponding with exhausting blade 4, be provided with silencing apparatus 2 in wireway 7 exits, attemperating unit is connected with the PID control device, data processor is connected with the digital high-speed temperature transducer, temperature shows and the PID control connection PID control connection executing agency.
Referring to Fig. 1, in rotor 6 process, exhausting blade 4 is processed in rotor 6 bottoms, when centrifuge turns round, air in the centrifugal chamber 8 is taken out by exhausting blade 4 and is made centrifugal chamber 8 produce negative pressure, rotating speed high negative pressure more is big more, rotor 6 is more little with windage, and noise is also just more little, and this negative pressure centrifuge is than generic centrifuge noise decline 10-20dB.
There is minority producer to utilize vavuum pump to make centrifugal chamber reach certain negative pressure at present, this measure can reduce the friction of air and rotor really, but the instrument cost height is simultaneously because vavuum pump itself also is a noise source, so this measure is not ideal to reducing anti noise.
Referring to Fig. 2, present most producer adopts interval control mode substantially, because relatively lagging behind of temperature and executing agency makes temperature accuracy be difficult to control accurately, the present invention adopts a kind of infinitely near method, both PID control, as long as temperature does not reach the control point, will not stop to operate executing agency and make temperature control infinitely near the control point, improved control accuracy of temperature greatly.Adopt the method temperature accuracy control can be accurate to ± 0.2 degree, and the conventional control method of other producers generally can only be accurate to temperature control ± the 2-3 degree.
Claims (1)
1. high speed low temperature centrifugal machine, comprise body (1), be installed in rotor (6) and centrifugal chamber (8) on the body (1), and attemperating unit, it is characterized in that: be provided with exhausting blade (4) in described rotor (6) bottom, on described centrifugal chamber (8), be provided with the wireway (7) corresponding with described exhausting blade (4), be provided with silencing apparatus (2) in described wireway (7) exit, described attemperating unit is connected with the PID control device, be that data processor is connected with the digital high-speed temperature transducer, temperature shows and the PID control connection, PID control connection executing agency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101924257A CN101161354B (en) | 2007-11-27 | 2007-11-27 | High speed low temperature centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101924257A CN101161354B (en) | 2007-11-27 | 2007-11-27 | High speed low temperature centrifugal machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101161354A CN101161354A (en) | 2008-04-16 |
| CN101161354B true CN101161354B (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101924257A Expired - Fee Related CN101161354B (en) | 2007-11-27 | 2007-11-27 | High speed low temperature centrifugal machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN101161354B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113885600B (en) * | 2021-09-16 | 2022-10-25 | 青岛海尔生物医疗科技有限公司 | Method and device for controlling temperature of centrifugal machine, centrifugal machine and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041426U (en) * | 1988-08-04 | 1989-07-19 | 上海手术器械厂 | Micro-blood centrifuger |
| US5996977A (en) * | 1998-07-09 | 1999-12-07 | Burgess; Harry L. | Temperature adjusted water aerator and circulation system |
| CN2511604Y (en) * | 2001-12-03 | 2002-09-18 | 介鸿机械股份有限公司 | Improved filler for bottle drinks |
| CN2829892Y (en) * | 2005-09-27 | 2006-10-25 | 李世娣 | Precision Gerber centrifugal machine |
| CN201124124Y (en) * | 2007-11-27 | 2008-10-01 | 湖南星科科学仪器有限公司 | High-speed low-temperature centrifuge |
-
2007
- 2007-11-27 CN CN2007101924257A patent/CN101161354B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041426U (en) * | 1988-08-04 | 1989-07-19 | 上海手术器械厂 | Micro-blood centrifuger |
| US5996977A (en) * | 1998-07-09 | 1999-12-07 | Burgess; Harry L. | Temperature adjusted water aerator and circulation system |
| CN2511604Y (en) * | 2001-12-03 | 2002-09-18 | 介鸿机械股份有限公司 | Improved filler for bottle drinks |
| CN2829892Y (en) * | 2005-09-27 | 2006-10-25 | 李世娣 | Precision Gerber centrifugal machine |
| CN201124124Y (en) * | 2007-11-27 | 2008-10-01 | 湖南星科科学仪器有限公司 | High-speed low-temperature centrifuge |
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| CN101161354A (en) | 2008-04-16 |
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