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Liquid transport device and liquid transport method

A technology of conveying device and liquid, applied in the field of liquid output device, can solve the problems of cam dislocation, unclear rotation angle of cam or rotor, change of detection position, etc.

Inactive Publication Date: 2016-02-10
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the liquid feeding operation and stop operation are repeated, the cam is misaligned due to external force applied when the liquid feeding is stopped, or the detection position changes due to backlash (backlash) in the rotation mechanism of the cam, or the The encoder changes the detection value, resulting in an error
In addition, there is also the possibility that the detection value of the encoder may change due to the influence of noise, etc.
When this change occurs, the actual cam or rotor rotation angle becomes unclear, making it difficult to deliver an accurate amount of liquid when going from a stopped state to a state where the pumping action resumes

Method used

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  • Liquid transport device and liquid transport method
  • Liquid transport device and liquid transport method
  • Liquid transport device and liquid transport method

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Experimental program
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Embodiment approach

[0067] (liquid delivery device)

[0068] figure 1 It is an overall perspective view of the liquid delivery device 1 . figure 2 It is an exploded view of the liquid delivery device 1 . As shown in the figure, the side to which the liquid transport device 1 is attached (the living body side) may be described as "lower", and the opposite side may be described as "upper".

[0069] The liquid transport device 1 is a device for transporting liquid. The liquid delivery device 1 includes a main body 10 , a liquid storage box 20 , and an application unit 30 . Such as figure 2 As shown, the main body 10, the liquid storage box 20 and the application part 30 can be separated, and can be used as follows: figure 1 Shown assembled as one piece. The liquid delivery device 1 is suitable for, for example, adhering the application part 30 to a living body, and injecting the liquid (for example, insulin) stored in the liquid storage box 20 on a regular basis. When the liquid stored in t...

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Abstract

The invention relates to a liquid transport device and a liquid transport method. The liquid transport device includes a drive mechanism having a rotor rotating when transporting a liquid, and a detection section adapted to detect a rotational angle of the rotor, and power of the detection section is switched between an ON state and an OFF state in sync with switching between drive and halt of the drive mechanism. Such a liquid transport device driven by the rotation of a cam or the rotor can reduce the power consumption of an encoder.

Description

technical field [0001] The invention relates to a liquid output device and a liquid delivery method. Background technique [0002] A micropump described in Patent Document 1 is known as a liquid transport device for transporting liquid. In the micropump, multiple pawls are arranged along the pipeline, and the cams sequentially push the pawls so that the pipeline is squeezed, thereby realizing the delivery of liquid. In addition, an encoder is provided to measure the angle of rotation of the cam or of the rotor that drives the cam in rotation. [0003] In the liquid transfer device described in Patent Document 1, the transfer operation and stop operation of the liquid may be repeatedly performed. For example, when the liquid delivery device is used as an insulin injection device, the insulin liquid is delivered for only 3 seconds in one minute, and the delivery of the liquid is stopped for the remaining 57 seconds, and this action is repeated. In such an insulin injection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/10
CPCF04B43/082F04B43/12
Inventor 宫本勉
Owner SEIKO EPSON CORP