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System for use with a droplet cleaning device for clearing an impact area for the droplets

A droplet and oral cleaning technology, which is applied in the direction of the device for cleaning the tooth cavity, can solve the problems affecting the removal efficiency of spots on the teeth and the reduction of the droplet impact rate on the tooth surface.

Active Publication Date: 2009-01-07
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impact rate of liquid droplets on the tooth surface is reduced due to the liquid film, which seriously affects the removal efficiency of stains on the teeth

Method used

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  • System for use with a droplet cleaning device for clearing an impact area for the droplets
  • System for use with a droplet cleaning device for clearing an impact area for the droplets
  • System for use with a droplet cleaning device for clearing an impact area for the droplets

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Embodiment Construction

[0010] As briefly discussed above, in the operation of a droplet cleaning system for oral care applications, the residue of droplets impinging on the teeth forms a liquid film on the teeth. This phenomenon occurs regardless of the droplet velocity. Liquid film occurs on both the upper and lower teeth, but more pronounced on the lower teeth, which interferes and reduces the impact effect of subsequent droplets in the droplet stream, which may be continuous or pulsating , thereby greatly affecting the normal cleaning effect of the droplets.

[0011] Although some negative effect occurs regardless of the thickness of the film and the velocity of the droplets, it will vary to some extent depending on the thickness of the film and the velocity of the droplets directed towards the teeth. It is known that even relatively small films have a strong influence on the maximum shear stress exerted by a droplet on the spots that appear on teeth. For example, a liquid film with a thickness...

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PUM

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Abstract

The clearing system for fluid droplets includes a source of air (10) which is produced at a given velocity and an air flow directing member (15) for directing the air flow to an area on the teeth which has thereon a liquid film (19) produced by previous landing of high-speed fluid droplets, wherein the velocity of the air flow is high enough to significantly reduce the thickness of the liquid film and thereby increase the efficiency of the fluid droplets in the cleared area on the teeth.

Description

technical field [0001] The present invention relates generally to high velocity droplet systems for oral cleaning applications, and more particularly to systems for removing portions of the liquid film formed on teeth due to liquid accumulation of the droplet system. Background technique [0002] In a droplet oral cleaning system, small liquid droplets are generated, then accelerated at high speed and directed to an application target such as a tooth in an oral cleaning application. Such systems have shown advantages in general oral cleaning efficiency. Systems for oral cleaning using droplets have been described, for example, in US Patent Application Serial No. 60 / 537,690, entitled Droplet Jet System For Cleaning, which is owned by the assignee of the present invention. The content of this application is hereby incorporated by reference. [0003] However, it has been found that during use of such droplet oral cleaning devices, individual droplets will typically collect in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C17/02A61C17/028A61C17/022
CPCA61C17/02A61C17/022A61C17/028
Inventor P·杜伊尼维尔德
Owner KONINKLIJKE PHILIPS ELECTRONICS NV