JP2008221103A - Centrifugal separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a centrifugal separator which can prevent erroneous setting, is excellent in visibility and reliability and has a simple panel part. <P>SOLUTION: The centrifugal separator is provided with a rotor which stores a sample to be centrifuged and an operation panel part 7 which displays the setting of rotation speed of the rotor or centrifuge acceleration and the present driving state, and one of figure display parts 7a of the operation panel part 7, and comprises a first changeover means which switches the rotation speed or the centrifuge acceleration to display the switched rotation speed or centrifuge acceleration and a second changeover means which switches at least two colors of letters displayed on the figure display parts from a plurality of different colors thereof and can display the switched letter colors, wherein figures displayed on the figure display parts 7a are displayed, in the rotation speed, with letter colors different from the letter color in the centrifuge acceleration. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a centrifuge for separating a sample by inputting a rotational speed or centrifugal acceleration as an operating condition.

  A centrifuge is a device that extracts a component desired by a user by utilizing centrifugal force generated by rotating a container containing a sample to be separated at high speed. ") Is important.

Here, RCF (× g) is calculated from the rotation radius r (mm) and the rotation speed N (rpm).
RCF = 1.118 × 10 ⁻⁶ × r × N ² (1)
Calculated by

  Therefore, the setting of the operating conditions when the sample is separated using the centrifuge is convenient in terms of operation because it is convenient to operate the centrifuge by directly inputting the RCF value. Since the motor control is mainly used, it is necessary to calculate the rotational speed of the motor from the input RCF value in advance. For example, a centrifuge capable of exchanging a plurality of rotors having different rotation radii r requires rotor identification means for identifying the rotation radii r in advance, and the control device is complicated and expensive.

  In addition, in a centrifuge that does not have a rotor identification means, only a frequently used rotor can be operated by directly inputting the RCF, because the rotation radius is calculated in advance as a fixed value by a program. In this case, it is specified in the instruction manual. If a rotor having a different rotation radius from a frequently used rotor is operated, the rotation speed r of the rotor to be operated is converted into the rotation speed N by the following equation (2), and the RCF value desired by the user is obtained. It is necessary to input such a rotational speed N as a set value.

N = √ (RCF / (1.118 × 10 ⁻⁶ × r)) (2)
In order to operate by inputting the two operating conditions of the rotational speed and the RCF as described above, it is desirable to provide separate display units, but in order to make the operation panel inexpensive and simple, one display unit is provided. There is a centrifuge equipped with an indicator capable of switching the rotation speed or the RCF value and simultaneously determining whether the current display value is the rotation speed or the RCF value.
JP 2002-306990 A

  In a centrifuge equipped with an indicator capable of discriminating whether the current display value is the rotation speed or the RCF value at the same time as switching and displaying the rotation speed or RCF value on the one numerical display section described above, When the user gets used to the operation of the centrifuge, attention is focused only on the numerical value to be input, and the display of the indicator is missed. For example, the RCF value is input even when the rotation speed is input, There is a possibility of erroneous setting such as inputting the rotation speed even in the RCF input state.

  The present invention has been made in view of the above problems, and its object is to provide a centrifuge having a simple panel portion with excellent visibility and reliability that can prevent erroneous setting. is there.

  In order to achieve the above object, the invention described in claim 1 includes a rotor for storing a sample to be centrifuged, and an operation panel unit for setting the rotational speed or centrifugal acceleration of the rotor and displaying the current operation state. One of the numerical display units of the operation panel unit is a first switching means for switching and displaying the rotational speed or centrifugal acceleration, and at least two or more of the colors of characters displayed on the numerical display unit are different. In the centrifuge having the second switching means capable of switching and displaying the numerical value display portion, the numerical value display portion is displayed in different character colors depending on whether the numerical value displayed on the numerical value display portion is a rotational speed or a centrifugal acceleration. It is characterized by doing so.

  According to a second aspect of the invention, in the first aspect of the invention, an indicator for determining whether the numerical value displayed on the numerical value display unit is a rotational speed or a centrifugal acceleration is provided separately from the numerical value display unit. It is characterized by that.

  According to the present invention, in a centrifuge having an operation panel section that switches and displays the rotational speed or centrifugal acceleration on one display section, the characters on the display section are displayed when the rotational speed is displayed and when the centrifugal acceleration is displayed. Since the user can clearly recognize which input state by changing the color, a centrifuge that has a simple panel unit that can prevent erroneous setting and has excellent operability and visibility. Can be provided.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a schematic configuration diagram of a centrifuge according to the present invention, and FIG. 2 is an external view of an operation panel portion of the centrifuge.

  A centrifuge 1 shown in FIG. 1 includes a rotor 3 that can accommodate a tube 4 that is a sample container, a motor 5 as a drive source that rotationally drives the rotor 3 at a predetermined speed, and a rotating chamber that houses the rotor 3. 2, a door 8 for closing or opening the upper opening of the rotating chamber 2, a door lock device (not shown) that can be engaged with a door hook provided on the door 8, and a housing that houses the motor 5 and the like. An operation panel unit 7 provided on the upper surface of the body and a control device 6 for controlling the operation panel unit 7 and the motor 5 are provided.

  In the centrifuge 1 having the above-described configuration, while the rotor 3 is rotating, the door lock device is engaged with a door hook provided on the door 8 so that the door 8 cannot be opened. Further, while the rotation of the rotor 3 is stopped, the door lock device is detached from the door hook provided on the door 8 so that the door 3 can be opened and the rotor 3 can be taken out from the rotating chamber 2.

  Next, the configuration of the operation panel unit 7 will be described with reference to FIG.

  The operation panel unit 7 includes a numerical value display unit 7a that displays an operation state or a set value, a centrifugal acceleration display indicator 7b that is turned on when the numerical value displayed on the numerical value display unit 7a is RCF (centrifugal acceleration), Setting switches 7c and 7d for inputting conditions, a START switch 7e for starting the operation, a STOP switch 7f for stopping the operation, and a SPEED / RCF changeover switch 7g for switching the display value of the numerical value display section 7a to the rotational speed or the RCF value. have. Here, the numerical value display unit 7a is configured to be able to switch between two or more colors with different displayed characters. For example, a color liquid crystal or a two-color light emitting diode is used.

  Thus, for example, when it is desired to operate with the rotational speed set, assuming that the character color of the numerical value displayed on the numerical value display portion 7a is red, if the SPEED / RCF switch 7g is pressed, the numerical value is displayed. The numerical value displayed on the display unit 7a is switched from the rotational speed to the RCF value, and at the same time, the character color is changed to other than red, for example, green.

  Note that the character display method of the numerical value display section 7a may be other than the case of recognizing with two different colors. For example, in the case of the rotation speed display, the background color is white and the character color is black. On the other hand, in the case of RCF display, the background color and the character color may be simply exchanged such that the background color is black and the character color is white. The same effect can be expected whether the character color is changed during the setting value change or not.

  As described above, according to the present embodiment, it becomes obvious at a glance which numerical value of the rotational speed or RCF (centrifugal acceleration) is displayed on the numerical display unit 7a, and the operation panel unit 7 having excellent visibility is centrifuged. By providing it in the separator 1, it is possible to prevent erroneous settings and improve work efficiency.

It is a schematic block diagram of the centrifuge which concerns on this invention. It is an external view of the apparatus panel part of the centrifuge which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Centrifuge 2 Rotating chamber 3 Rotor 4 Tube 5 Motor 6 Control device 7 Operation panel part 7a Numerical display part 7b Centrifugal acceleration display indicator 7c, 7d Setting switch 7e RTART switch 7f STOP switch 7g SPEED / RCF changeover switch 8 Door

Claims (2)

A rotor for storing a sample to be centrifuged, and an operation panel unit for setting the rotational speed or centrifugal acceleration of the rotor and displaying a current operation state. One of the numerical display units of the operation panel unit is a rotational speed or A centrifugal switch having first switching means for switching and displaying centrifugal acceleration, and second switching means capable of switching and displaying at least two or more colors from among a plurality of different colors of characters displayed on the numerical value display section. In the separator
A centrifugal separator characterized in that the numerical value display portion is displayed in different character colors depending on whether the numerical value displayed on the numerical value display portion is a rotational speed or a centrifugal acceleration. 2. The centrifuge according to claim 1, wherein an indicator for discriminating whether the numerical value displayed on the numerical display unit is a rotational speed or a centrifugal acceleration is provided separately from the numerical display unit.

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