JP2541246Y2 - centrifuge - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifuge in which a plurality of different rotors can be replaced and used, and a plurality of types of sedimentation tubes can be used.

[0002]

2. Description of the Related Art Conventionally, centrifuges have been widely used for analyzing components of a sample in the medical field and the like. The centrifugal separator includes a rotor for supporting or storing a sedimentation tube for storing a sample, a drive motor for rotating the rotor, a control unit for controlling the drive motor, and the like.

In such a centrifugal separator, a plurality of different rotors can be used interchangeably, but in most cases, the rotational radii of the rotors are different for each rotor. In addition, even in the same rotor, there is a situation where the radius of rotation differs depending on the type of the sedimentation tube to be mounted.

[0004]

Therefore, conventionally, in order to calculate the number of rotations to obtain the required centrifugal acceleration, the radius of rotation is confirmed from the types of the rotor and the sedimentation tube.
Then, the number of revolutions required to obtain the required centrifugal acceleration had to be calculated backward or calculated by rough estimation.

[0005] Therefore, a choice has been made as to whether to increase the rotation accuracy by performing complicated calculations, or not to require accuracy by rough estimation.

An object of the present invention is to solve the above-mentioned problems and to provide a centrifuge capable of obtaining a required centrifugal acceleration simply by selecting a sedimentation tube code.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention identifies a plurality of different replaceable rotors, identifies the rotor at the start of centrifugation, and drives the rotor to a set speed. In a centrifugal separator that controls the motor in a feedback manner, the radius of rotation for each type of sedimentation tube that can be mounted on each rotor is stored in a ROM, and a sedimentation tube code is input at the start of centrifugation, so that the types of the rotor and the sedimentation tube are used. And a control unit for calculating the number of rotations at which a predetermined centrifugal acceleration can be obtained from the type of the rotor and the sedimentation tube.

[0008]

According to the centrifuge according to the present invention,
First, a rotor to be used is selected and attached to a centrifuge. Then, attach the precipitation tube containing the sample to the rotor,
Enter the sedimentation tube code. In this way, the type of rotor and the turning radius are called out from the sedimentation tube, and the number of rotations at which a predetermined centrifugal acceleration is obtained is calculated. After the number of revolutions is determined, enter the number of revolutions and press the start button.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of the centrifuge of the present invention, FIGS. 2A and 2B are conceptual sectional views showing an angle type rotor of the centrifuge, and FIGS. 3A and 3B. 1) is a conceptual sectional view showing a swing type rotor of a centrifuge.

In FIGS. 1 and 2 (a) and 2 (b), 1
Is the rotor of the centrifuge. A plurality of different rotors 1 can be selectively replaced in the centrifuge.

Reference numeral 2 denotes a sensor for detecting a unique magnetic pattern formed on the bottom surface of the rotor 1 by a magnetic sensor. The type of the rotor 1 is identified by the rotor identification unit 3.

Reference numeral 4 denotes a precipitation tube code input section for inputting a precipitation tube code of the precipitation tube 5. The radius of rotation r when the sedimentation tube 5 is mounted on the rotor 1 differs depending on the length, as shown in FIG. 2 (a) when it is long and as shown in FIG.

Reference numeral 6 denotes a control unit which receives signals from the rotor identification unit 3 and the sedimentation tube code input unit 4 and calculates the number of revolutions at which a predetermined centrifugal acceleration can be obtained. The control unit 6 stores in advance the sedimentation tube codes of a plurality of different sedimentation tubes 5 as ROs.
The rotation radius r when the used sedimentation tube 5 is mounted on the predetermined rotor 1 is read out from this sedimentation tube code, and the required centrifugal acceleration or rotation speed is calculated. is there.

Reference numeral 7 denotes a display for displaying the type of the rotor 1 and the type of the sedimentation tube 5 based on a signal from the control unit 6.

The rotor 1 has the same length as the angle rotor of FIGS. 2 (a) and 2 (b) and the length of the sedimentation tube 5 in the case of the swing rotor of FIGS. 3 (a) and 3 (b). The radius of gyration changes depending on this.

Next, the operation of the centrifugal separator having the above configuration will be described.

First, the rotor 1 is selected and assembled into a centrifuge. A precipitation tube 5 containing a sample is attached to the rotor 1.

When the type of the sedimentation tube 5 is input to the sedimentation tube code input unit 4, a signal from the sedimentation tube code input unit 4 is input to the control unit 6. On the other hand, the type of the rotor 1 detected by the sensor 2 is identified by the rotor identification unit 3, and an identification signal is input to the control unit 6.

The control unit 6 detects the rotation radius r of the sedimentation tube 5 from the type of the rotor 1 identified by the rotor identification unit 3 and the signal from the sedimentation tube code input unit 4, and determines the required centrifugal acceleration or rotation speed. calculate.

The display unit 7 displays the required centrifugal acceleration or rotation speed.

[0022]

As described above, according to the present invention, a plurality of different replaceable rotors are identified, the rotors are identified at the start of centrifugal separation, and the drive motor is set so that the rotors reach the set speed. In a centrifuge controlled by feedback, the radius of rotation for each type of sedimentation tube that can be mounted on each rotor is stored in ROM, and a sedimentation tube code is input at the start of centrifugal separation to rotate from the rotor and the type of sedimentation tube. A control unit is provided to calculate the number of revolutions at which a predetermined centrifugal acceleration can be obtained from the rotor and the type of the sedimentation tube, so that the sedimentation tubes having different lengths are used when the rotation radius of the sedimentation tube is different. Also, the required centrifugal acceleration or rotation speed can be easily calculated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a centrifuge according to the present invention.

FIG. 2 (a) is an angle type roast equipped with a long sedimentation tube.
FIG. 3B is a conceptual sectional view showing an angle type rotor equipped with a short sedimentation tube.

FIG. 3 (a) is a swing-type row equipped with a long sedimentation tube.
FIG. 2 (b) is a conceptual sectional view showing a swing type rotor equipped with a short sedimentation tube.

[Description of Signs] 1 rotor 2 sensor 3 rotor identification unit 4 sedimentation tube code input unit 5 sedimentation tube 6 control unit 7 display unit

Claims (1)

(57) [Scope of request for utility model registration] 1. A centrifuge in which a plurality of different replaceable rotors are identified, the rotors are identified at the start of centrifugal separation, and a drive motor is feedback-controlled so that the rotors reach a set speed. The rotational radius for each type of sedimentation tube that can be mounted is stored in the ROM, and at the start of centrifugation, a sedimentation tube code is input, the radius of rotation is called from the rotor and the type of sedimentation tube, and the rotational speed at which a predetermined centrifugal acceleration is obtained. A centrifuge comprising a control unit for calculating the number.