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Liquid discharge device and discharge method

A technology of liquid and liquid supply, applied in the direction of liquid injection device, injection device, spray conveying, etc., can solve the problem of changing the mixing ratio design without precise control

Inactive Publication Date: 2008-10-22
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the systems described above are not designed for the proper, easily changing mixing ratios required for precise control

Method used

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  • Liquid discharge device and discharge method
  • Liquid discharge device and discharge method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0064] Storage parts 1 and 2 were filled with solution A and solution B described below, respectively. In addition, piezoelectric pumps are used in the liquid supply parts 5 and 6, respectively. This pump is limited to delivering 50 microliters of liquid when the pump is actuated at 50 Hz for one second. For the actual actuation of the pumps, the frequencies of the pumps for solutions A and B were set to 40 Hz and 10 Hz, respectively, and activated simultaneously for one second to deliver 4 microliters of solution A and 1 microliter of solution B, respectively.

[0065] Solution A: 4mg / ml insulin in water

[0066] Solution B: 20mg / ml lauryl sarcosine aqueous solution

[0067] The ejection unit 10 used had 400 nozzles with a nozzle diameter of 3 micrometers. The mixed liquid was atomized for one second, and then atomized again at intervals of 4 seconds, whereby a total of 50 atomizations were performed. For repeated atomization, liquid supply and liquid supply are appropria...

example 2

[0081] In Example 1, the substance in solution B was changed to arginine, the pump setting was changed to 40 Hz, and the amount of liquid to be delivered was changed to 4 microliters. Since both liquid supply components have the same drive frequency, the liquid supply components are controlled such that their actuation timings are staggered. In addition, after storage of solutions A and B at 30°C for two months, the same evaluation was carried out by nebulization as in Example 1. It turned out that all 50 atomization trials were successful. Furthermore, in terms of the concentration ratio of the liquids to be mixed and supplied, a ratio of 0.08 was obtained.

example 3 to example 5

[0083] In Example 2, the liquid contents were changed to those shown in Table 1, and then evaluated in the same manner as in Example 2. The results obtained are shown in Table 1. That is, it was found that the mixing ratio can be precisely controlled.

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Abstract

A liquid ejection device, includes: a plurality of storing parts for storing liquids; a plurality of liquid-feeding parts connected to the respective storing parts; a ejection part for ejecting a liquid; a plurality of flow paths connected to the plurality of liquid-feeding parts, respectively; and a connection part for joining the plurality of flow paths and connecting them as a single flow pathto the ejection part. The plurality of liquid-feeding parts are actuated to mix the liquids from the plurality of storing parts in the single flow path joined at the connection part and feed a mixture of the liquids to the ejection part to eject the mixture from the ejection part. According to the ejection device of the present invention, the ejection amount or the mixing ratio can be easily changed in a comparatively precise manner.

Description

technical field [0001] The present invention relates to a discharge device and a discharge method for discharging liquid. More specifically, the present invention can be applied to a dispensing mechanism used in a device for generating a predetermined air flow at atmospheric pressure, including liquid atomizing medical devices such as inhalers and applicators for nasal drops, or air conditioners , air cleaners, ventilators and air inlet devices. As described above, the present invention relates to a liquid ejection device and a liquid ejection method, and can be widely applied depending on the form of use thereof. technical background [0002] Various devices are known in the prior art for generating a predetermined flow of air at atmospheric pressure, ranging from devices applicable in industry to domestic devices. Furthermore, variants include devices such as those for air supply, air suction, air replacement, air purification or supply of certain components in an air st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B17/04A61M11/00A61M15/08
CPCA61M2205/588A61M2205/8206A61L9/14A61M15/02A61M2015/0003A61M2011/042A61K9/0073A61M15/0085A61M2015/025A61M15/0065A61L9/03A61L2209/134A61M11/042A61M15/0003A61M15/025
Inventor 杉田贤和田弘行
Owner CANON KK
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