JPH0596212A - Atomizer - Google Patents

Abstract

PURPOSE:To perform both atomization of atomized particles and uniformization of particle diameter in relation to an atomizer for atomizing liquid. CONSTITUTION:An atomizer is constituted of a liquid nozzle 3, a gas injection port 11 provided oppositely to the liquid injection port 8 of this liquid nozzle 3 and an opposite gas injection port 12 provided oppositely to the liquid nozzle 3. Since high-speed air flow is formed in the outside and the inside of a liquid film injected as a hollow conical liquid film 14 from the liquid injection port 8, atomization is promoted and liquid can be atomized as very small uniform particles. Controlling width of atomization amount can be enlarged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an atomizing device for atomizing water, oil, a drug solution, etc., a humidifier, a medical device such as a drug atomizer,
It is used for combustion equipment.

[0002]

2. Description of the Related Art Recently, atomizers using liquid pressure nozzles have been used in humidifiers, liquid combustion devices, and the like. Conventionally,
As this type of atomizing device, there is a structure shown in FIG. As shown in the figure, the high pressure pump 1 pressurizes the liquid and ejects it from the nozzle 2 in the shape of a hollow inverted cone to atomize the liquid.

[0003]

However, in the above-mentioned conventional structure, atomization is caused only by the difference in velocity between the jetted liquid and the stationary ambient gas, and the atomized particle size is large and the uniformity is poor and atomized. There is a problem in that there is a problem in performance, and when the atomization amount is reduced, the ejection speed of the liquid is reduced, atomization cannot be performed, and the adjustment range of the atomization amount is small.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an atomizing device capable of reducing the size of atomized particles and making them uniform, and expanding the adjustment range of the amount of atomization. To do.

[0005]

In order to achieve the above object, the present invention provides a liquid nozzle for ejecting a liquid in the shape of a hollow inverted cone, a liquid ejection port provided in this liquid nozzle, and this liquid ejection port. It is configured to have a facing gas jet port arranged so as to face each other.

[0006]

According to the present invention, with the above-described structure, a hollow inverted conical liquid film is ejected from the liquid ejection port of the liquid nozzle, and a gas having a predetermined flow velocity is ejected from the gas ejection port provided corresponding to this liquid ejection port. , A gas of a predetermined flow velocity ejected from the outside toward the hollow inverted conical liquid film and further ejected toward the liquid ejection port of the liquid nozzle from an opposed gas ejection port provided opposite to the liquid ejection port After colliding with the liquid immediately after being ejected, the flow direction is changed, and a gas flow having a predetermined flow velocity is formed substantially along the inside of the hollow inverted conical liquid film. Therefore, since the hollow inverted conical liquid film is sandwiched by the two gas flows of the outer side and the inner side, it spreads in the direction of the flow into a liquid film having a thinner uniform thickness, and a thin liquid film is formed. The gas flow with a predetermined flow velocity formed on both sides of the membrane is
Disturbances are generated on both surfaces of the liquid film, and these disturbances are synergistically transmitted from both surfaces in the thickness direction.Thus, the thin liquid film is divided very effectively, which promotes atomization. As a result, the particles can be atomized into small particles having uniform size. Further, even when the atomization amount is small, it is possible to form a thin liquid film by the gas flow having a predetermined flow velocity formed on both sides of the liquid film as described above, and further atomization from both sides of the liquid film is possible. Therefore, even if the atomization amount is small, the atomization performance can be maintained and the adjustment range of the atomization amount can be expanded.

[0007]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 3 denotes a liquid nozzle, inside of which a liquid flow path 4 is provided, and a swirl groove body 7 held by a supporting portion 6 having a communication port 5 is provided.
A liquid ejection port 8 is provided at the downstream open end of the liquid flow path 4, and the upstream side communicates with a liquid pump (not shown) that is a liquid supply means. A gas passage 10 formed by the liquid nozzle 3 and the gas supply unit 9 is provided outside the liquid nozzle 3.
Is provided, and the gas outlet 11 is provided at the open end on the downstream side.
Is provided in the vicinity of the gas ejection port 8, and the upstream side communicates with a blower fan (not shown) that is an air supply means. The counter gas outlet 12 is provided so as to face the gas nozzle 3, and communicates with a blower fan (not shown) that is an air supply unit through the counter gas passage 13.

In the above structure, the liquid supplied from the liquid pump (not shown) serving as the liquid supply means flows in from the liquid flow path 4, passes through the communication port 5 and becomes a swirling flow in the swirling groove body 7, and the liquid jet port. 8 is ejected as a hollow inverted conical liquid film 14. Air supplied from a blower fan (not shown) which is an air supply means passes through the gas passage 10 and is jetted from the gas jet port 11 toward the hollow conical liquid film 14 from the outside at a predetermined flow velocity. Further, the air supplied from a blower fan (not shown) that is an air supply unit passes through the opposing gas passage 13 and is ejected from the opposing gas ejection port 12 toward the liquid ejection port 8 at a predetermined flow velocity, and the liquid immediately after ejection is ejected. After the collision, the flow direction is changed to form an air flow having a predetermined flow velocity substantially along the inside of the hollow inverted conical liquid film 14. Therefore, two air flows having a predetermined flow velocity formed on the outer side and the inner side of the hollow inverted-cone liquid film 14 sandwich the hollow inverted-cone liquid film 14 from both sides, and the liquid film flows in the flow direction. Toward the surface of the thin liquid film, and the air flow formed on both sides of the thin liquid film causes a disturbance on both surfaces of the liquid film. , Since it is synergistically transmitted from both surfaces in the thickness direction, it acts to break a thin liquid film very effectively, so atomization is promoted and atomized as uniform particles with a small particle size. There is an effect that you can. Further, even when the atomization amount is small, the air flow of a predetermined flow velocity formed on both sides of the hollow conical liquid film 14 acts to thin the liquid film as described above, and the liquid film Since they act from both sides to promote atomization, even if the atomization amount is small, the atomization performance can be maintained and the adjustment range of the atomization amount can be expanded.

(Embodiment 2) Next, another embodiment of the present invention will be described with reference to FIG. 2 is different from the above embodiment in that the gas ejection port 15 is provided around the liquid nozzle tip 16, and even in this case, if the amount of air ejected from the gas ejection port 15 is adjusted. It is clear that an air flow having a predetermined flow rate can be formed outside the hollow inverted conical liquid film 14, and similar atomization can be obtained, and the effect that the configuration of the gas ejection port 15 can be simplified is obtained. is there.

[0011]

As described above, according to the atomizing device of the present invention, the following effects can be obtained. (1) Since the opposing gas ejection port is provided facing the liquid ejection port, the hollow conical liquid film ejected from the liquid ejection port is
Due to the gas flow inside, it spreads in the direction of the flow in the form of a liquid film having a thinner uniform thickness, and since the gas flow also promotes atomization from the inner surface of the liquid film,
Can be atomized as uniform particles with small particle size. (2) Since the opposing gas ejection port is provided opposite to the liquid ejection port, the hollow conical liquid film ejected from the liquid ejection port can be thinned even when the atomization amount is small, Since atomization is also promoted from the inner surface of the film, atomization performance can be maintained and the adjustment range of the atomization amount can be expanded.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an atomizing device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of an atomizing device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a conventional atomizing device.

[Explanation of symbols]

 3 Liquid Nozzle 8 Liquid Jet 9 Gas Supply 11 Gas Jet 12 Opposed Gas Jet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiko Uno 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A liquid nozzle for ejecting a liquid in the shape of a hollow inverted cone, a liquid ejection port provided in the liquid nozzle, and a counter gas ejection port arranged so as to face the liquid ejection port. Atomizer. 2. The liquid nozzle according to claim 1, further comprising: a liquid nozzle, a gas supply unit provided to enclose the liquid nozzle, and a gas ejection port provided in the gas supply unit so as to face the liquid ejection port. Atomizer.