公开(公告)号：WO1983002008A1

公开(公告)日：1983-06-09

申请号：PCT/US1982001714

申请日：1982-12-03

Applicant: BECKMAN INSTRUMENTS, INC.

Inventor： BECKMAN INSTRUMENTS, INC. ,  STEPHENS, Donald, E. ,  SHARPLES, Thomas, D.

IPC: G01N31/08

CPC classification number: G01N30/30 ,  G01N30/6026 ,  G01N30/6052 ,  G01N2030/303 ,  G01N2030/3084

Abstract: Colonne droite allongée (42) destinée à être utilisée en tant que réacteur dans un instrument analytique. La colonne (42) contient un matériau de garniture inerte permettant d'obtenir la longueur de chemin d'écoulement nécessaire pour un courant de fluide pénétrant dans le réacteur. Des ajustages (58) sont incorporés dans les extrémités de la colonne (42) de sorte que leur largeur ne dépasse pas la largeur de la colonne (42). Cette configuration de colonne (42) pour un réacteur autorise une plus grande souplesse dans le choix des mécanismes régulateurs de température utilisés pour chauffer et refroidir le réacteur.

公开(公告)号：WO1996001696A1

公开(公告)日：1996-01-25

申请号：PCT/US1995008508

申请日：1995-07-07

Applicant: BECKMAN INSTRUMENTS, INC.

Inventor： BECKMAN INSTRUMENTS, INC. ,  SHARPLES, Thomas, D.

IPC: B04B13/00

CPC classification number: B04B13/003 ,  B04B15/02

Abstract: A method and system of identifying a rotor of a centrifuge employ an approach that uses two tiers of model selection. Firstly, the moment of inertia of a rotor is calculated for a first measured acceleration. The indication of moment of inertia is utilized to disqualify a number of rotor models and to select a subset of models. In a second tier, windage power of the rotor is calculated in a manner that isolates windage from inertial drag. In one embodiment, drive torque is measured with the rotor operated at a high constant speed. Alternatively, windage is calculated using data obtained during a second measured acceleration. The accuracy of the computation is enhanced by taking into account the moment of inertia as one form of resistance to the second acceleration. Based upon the indication of windage power, at least one rotor model within the subset is disqualified. Upon identification of the rotor, the centrifugal process can be maintained at a maximum safe speed. Moreover, a refrigeration offset circuit is controlled to provide a dynamic temperature correction with changes in windage power.

Abstract translation: 识别离心机转子的方法和系统采用使用两层模型选择的方法。 首先，对于第一测量加速度计算转子的惯性矩。 惯性矩的指示用于取消多个转子模型的资格，并选择一个模型子集。 在第二层中，转子的风力功率是以将惯性阻力隔离的方式进行计算的。 在一个实施例中，用转子以高恒定速度运行来测量驱动转矩。 或者，使用在第二测量加速度期间获得的数据计算风量。 通过将惯性矩考虑为对第二加速度的一种阻力的形式来增强计算的精度。 基于风力功率的指示，该子集内的至少一个转子模型被取消资格。 在识别转子时，可以将离心过程保持在最大安全速度。 此外，制冷补偿电路被控制以提供具有风力功率变化的动态温度校正。

公开(公告)号：WO1987003512A1

公开(公告)日：1987-06-18

申请号：PCT/US1986002240

申请日：1986-10-23

Applicant: BECKMAN INSTRUMENTS, INC.

Inventor： BECKMAN INSTRUMENTS, INC. ,  SHARPLES, Thomas, D. ,  PIRAMOON, Alireza

IPC: B04B05/04

CPC classification number: B04B5/0421

Abstract: A swinging bucket centrifuge rotor including seating surfaces having shapes which cause buckets seating thereon to be relieved of side loading forces. Each bucket is symmetrical and is pivotally supported by bucket pins that rest in respective spring-loaded carrier assemblies. The spring constants of the springs of the carrier assemblies are selected so that the leading edge of each bucket bottom rests upon a curved surface and clears the respective seating surface before the trailing edge thereof contacts the same. The resulting bucket orientation assures that, upon seating, each bucket rotates until its bucket pins lift slightly off of the surfaces of the respective carrier assemblies.

公开(公告)号：EP0250480A1

公开(公告)日：1988-01-07

申请号：EP86907046.0

申请日：1986-10-23

Applicant: BECKMAN INSTRUMENTS, INC.

Inventor： SHARPLES, Thomas, D. ,  PIRAMOON, Alireza

IPC: B04B5

CPC classification number: B04B5/0421

Abstract: Rotor de centrifugeuse à godets basculants comprenant des surfaces de sièges présentant des formes permettant aux godets reposant sur les sièges d'être soulagés des efforts latéraux de charge. Chaque godet est symétrique et est supporté de manière pivotante par des goujons de godets qui reposent dans des ensembles respectifs de supports à ressorts. Les constantes élastiques des ressorts des ensembles de supports sont sélectionnées de sorte que le bord d'attaque de chaque fond de godet repose sur une surface courbe et laisse libre la surface de siège respective avant que son bord de fuite n'entre en contact avec cette même surface. L'orientation résultante du godet assure que chaque godet tourne sur son siège jusqu'à ce que les goujons de godets décollent légèrement des surfaces des ensembles de supports respectifs.

公开(公告)号：EP0714323A1

公开(公告)日：1996-06-05

申请号：EP95925541.0

申请日：1995-07-07

Applicant: BECKMAN INSTRUMENTS, INC.

Inventor： SHARPLES, Thomas, D.

IPC: B04B13 ,  B04B15

CPC classification number: B04B13/003 ,  B04B15/02

Abstract: A method and system of identifying a rotor of a centrifuge employ an approach that uses two tiers of model selection. Firstly, the moment of inertia of a rotor is calculated for a first measured acceleration. The indication of moment of inertia is utilized to disqualify a number of rotor models and to select a subset of models. In a second tier, windage power of the rotor is calculated in a manner that isolates windage from inertial drag. In one embodiment, drive torque is measured with the rotor operated at a high constant speed. Alternatively, windage is calculated using data obtained during a second measured acceleration. The accuracy of the computation is enhanced by taking into account the moment of inertia as one form of resistance to the second acceleration. Based upon the indication of windage power, at least one rotor model within the subset is disqualified. Upon identification of the rotor, the centrifugal process can be maintained at a maximum safe speed. Moreover, a refrigeration offset circuit is controlled to provide a dynamic temperature correction with changes in windage power.

公开(公告)号：EP0250480B1

公开(公告)日：1991-03-06

申请号：EP86907046.6

申请日：1986-10-23

Applicant: BECKMAN INSTRUMENTS, INC.

Inventor： SHARPLES, Thomas, D. ,  PIRAMOON, Alireza

IPC: B04B5/04

CPC classification number: B04B5/0421

Abstract: A swinging bucket centrifuge rotor including seating surfaces having shapes which cause buckets seating thereon to be relieved of side loading forces. Each bucket is symmetrical and is pivotally supported by bucket pins that rest in respective spring-loaded carrier assemblies. The spring constants of the springs of the carrier assemblies are selected so that the leading edge of each bucket bottom rests upon a curved surface and clears the respective seating surface before the trailing edge thereof contacts the same. The resulting bucket orientation assures that, upon seating, each bucket rotates until its bucket pins lift slightly off of the surfaces of the respective carrier assemblies.