Surgery – Liquid medicament atomizer or sprayer – Ultrasonic
Patent
1990-05-16
1991-12-31
Burr, Edgar S.
Surgery
Liquid medicament atomizer or sprayer
Ultrasonic
12820014, A61M 1100, B05B 1706
Patent
active
050762664
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to devices for atomizing a liquid medium and in particular to devices for ultrasonic atomizing of a liquid medium.
BACKGROUND ART
Modern ultrasonics lack appropriate devices for ultrasonic atomizing of a liquid medium, which would provide a fairly long spray cone without heating. Moreover, difficulties are generally involved in obtaining a uniform spray.
There is known a device for ultrasonic atomizing of a liquid medium (SU, A, 1,237,261) comprising an ultrasonic vibrator with a concentrator, a main thrust bushing installed on the ultrasonic vibrator, an additional thrust bushing installed on the concentrator, an auxiliary thrust bushing having a radial channel with an outlet on its internal surface and disposed in the terminal portion of the concentrator, a guide mechanically connected to the main and additional thrust bushings, a branch pipe for feeding a liquid medium, which is arranged along the longitudinal axis of the concentrator and mechanically connected to the main thrust bushing, a free end of said branch pipe being fitted through the additional thrust bushing, and two hollow rods, one of which is mechanically connected to the auxiliary thrust bushing, while the other one communicates with its radial channel, free ends of the guide and the branch pipe for feeding a liquid medium being movably fitted in the other ends of the first and second hollow rods, respectively.
However, in the known device a desired liquid-medium spray-cone angle may be obtained only by using an ultrasonic vibrator having a predetermined power, a disadvantage increasing ineffectively a spray-cone angle due to which the spray length is limited and dispersion is appreciably decreased.
Moreover, the foregoing device has been generally unsatisfactory due to the fact that a liquid medium is atomized at a spray-cone angle formed in the course of its free movement from the concentrator, a factor making the spray nonuniform and unstable.
DISCLOSURE OF THE INVENTION
This invention is based on the problem of providing a device for ultrasonic atomizing of a liquid medium, equipped with a means to increase the spray length, make the spray of the liquid medium more uniform and stable.
This problem is accomplished by that a device for ultrasonic atomizing of a liquid medium, comprising an ultrasonic vibrator with a concentrator, a main thrust bushing installed on the ultrasonic vibrator, an additional thrust bushing installed on the concentrator, an auxiliary thrust bushing having a radial channel with an outlet on its internal surface and disposed in the terminal portion of the concentrator, a guide mechanically connected to the main and additional thrust bushings, a branch pipe for feeding a liquid medium, which is arranged along the longitudinal axis of the concentrator and connected mechanically to the main thrust bushing, a free end of said branch pipe being fitted through the additional thrust bushing, and two hollow rods, one of which is mechanically connected to the auxiliary thrust bushing, while the other one communicates with its radial channel, free ends of the guide and the branch pipe for feeding a liquid medium being movably fitted in the other ends of the first and second hollow rods, respectively, which, according to the invention, comprises a means for regulating a liquid-medium spray-cone angle, which is arranged in the terminal portion of the concentrator.
It is preferable that in the proposed device for ultrasonic atomizing of a liquid medium said means for regulating a liquid-medium spray-cone angle should be made as a bell mouth encompassing coaxially with a gap the terminal portion of the concentrator and attached to the auxiliary thrust bushing with its smaller end.
It is also preferable that in the proposed device for ultrasonic atomizing of a liquid medium said bell mouth should be secured to the end of the auxiliary thrust bushing facing the additional thrust bushing.
It is advantageous that in the proposed device for ultrasonic atomizing of a liqui
REFERENCES:
patent: 1979006 (1934-10-01), Moran
patent: 4726525 (1988-02-01), Yonekawa et al.
Azerbaidzhansky Politekhnichesky Institut Imeni CH. Ildryma
Burr Edgar S.
Malvaso Lisa E.
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