Peristaltic pump device

a pump device and peristaltic technology, applied in the direction of pump components, positive displacement liquid engines, pump control, etc., can solve the problems of rapid decrease in flow rate, difficult to sufficiently reduce pulsation, and inability to rotate the pump, so as to reduce the pulsation of the discharge flow rate, increase the rotation speed, and reduce the effect of discharge flow ra
US20180149152A1Inactive Publication Date: 2018-05-31TAKASAGO ELECTRIC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
TAKASAGO ELECTRIC
Publication Date
2018-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

A micro peristaltic pump of a peristaltic pump device presses a rotor against a circular arc shaped flow path inside a microfluidic chip formed to be sheet-like, rotary-drives the rotor by a motor, and causes the circular arc shaped flow path to make a peristaltic motion by the rotation of the rotor, to send a fluid. The peristaltic pump device is provided with a rotation sensor that detects a rotational position of the rotor, a memory that stores in advance a rotational position of the rotor and rotation speed data of the motor corresponding to the rotational position, and a control circuit that calculates a command rotation speed of the motor from data stored in the memory based on a detection signal of the rotation sensor, and controls rotation of the motor based on the command rotation speed.
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Description

BACKGROUND OF THE INVENTION1. Field of the Invention

[0001] The present invention relates to a peristaltic pump device which is used at the time of flowing micro-fluid such as a culture solution or various types of reagents into a microfluidic flow path, to perform cell culturing, reagent screening, chemical analysis, and the like, and in particular, to a peristaltic pump device which is capable of effectively reducing pulsation when sending fluid.2. Description of Related Art

[0002] Conventionally, a peristaltic pump in which a plurality of rollers are rotatably-pivotally supported on a circular rotor, and the outer circumferential surfaces of the respective rollers on the rotor are pressed against a tube, to send a fluid in the tube while rotating the rotor, has been known by JP No. 2004-92537 A, etc.

[0003] This type of conventional peristaltic pump is configured such that a circular rotor which is rotary-driven by a motor rotatably-pivotally supports a plurality of rollers on its oute...

Claims

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