DE8222262U1 - DEVICE FOR PRODUCING AN AEROSOL - Google Patents

Description

Device for generating an aerosol

10

The invention relates to a device for generating an aerosol with a liquid by means of a Vibration generator atomizing and the aerosol emitting nebulization chamber and a motor-driven, Fan wheel housed in a separate chamber, which sucks in air through a bacteria filter and supplies the sucked air to the upper part of the nebulization chamber via a connecting line, wherein the Fan wheel via a magnetic coupling acting through a partition wall arranged between the motor and fan wheel connected to the engine.

An aerosol is a gas, especially air, that contains solid or liquid suspended matter in finely divided form contains. Aerosols from water and aqueous solutions with droplet sizes from 1 to 5 (Um are often used in medicine used, water-soluble medicaments added to the aqueous solutions for the preparation of the aerosol can be. The aerosols of water and aqueous solutions used in medicine are used, among other things to increase the humidity in operating theaters and intensive care units and to humidify the patient's respiratory tract. It is essential here that the aerosols are germ-free to prevent possible infections

I I * t f

to avoid. However, germ-free aerosols can only be achieved with devices that are themselves germ-free.

A device of the type shown is known from DE-AS 28 43 756. With this device that is Fan wheel housed in an exchangeable cassette, which is guided in a guide frame of the housing and is lockable. With the help of leaf springs and () 10 indentations, this cassette is in its functional position definable. A bacterial filter is placed in front of the inlet opening of the fan wheel chamber to prevent it the suction of air must be tightly connected by bypassing the bacterial filter.

15th

The bacterial filter arranged in the suction opening to the fan wheel cannot prevent pathogens from accumulating in the fan wheel and in the surrounding area, which get into the aerosol on the way via the nebulization chamber and pose a risk of infection. These There is a particular risk if the bacteria filter is not tightly connected. A frequent car

cloning of the fan cassette and the bacterial filter is required. To do this, the bacterial filter must first be removed from the side of the housing and then the cassette can be pulled up and out of the housing.

So that the entire device is always fully functional, three individual parts, namely the nebulization aer, the fan wheel cassette and the bacteria filter, respectively removed and made sterile in an autoclave or sterilizer. This work is time-consuming

agile and requires the greatest care. A guarantee that all three items are always made perfectly sterile and which have been fully functional again, do not exist. It remains mostly the care leave to the appropriate personnel to ensure that all parts are reinstalled in a sterile and proper manner.

The air supply from the fan wheel chamber to the nebulizer -> lung chamber takes place via a connection hose, the

runs outside the entire device and is connected to the top ■ end of the nebulization chamber. One

Uniform distribution of the air in the nebulization chamber, which is only supplied via a connecting line, is not guaranteed.
15th

The invention is based on the object of designing a device of the type shown so that the Removal and installation of the elements for the purpose of feeding them to the autoclave or sterilizer is made easier and simpler and an air connection hose running outside the device can be dispensed with

■ J) while at the same time achieving an even air

distribution in the nebulization chamber.

This object is achieved according to the invention in that the fan wheel housed in the separate chamber

I _n and the bacterial filter combined to form one unit

closed and on the outside of the case next to the

_: ! Nebulization chamber are detachably arranged, the

to form a structural unit combined parts and the

Nebulization chamber each via a plug connection

the housing can be connected and in the nebulization

chamber one or more vertically running air ducts are arranged, the bottom with the fan wheel chamber in Are connected and connected to a retaining ring at the top. In an embodiment of the invention is on the retaining ring is arranged with an air distribution and receiving ring provided with openings for the chamber cover. In an advantageous embodiment of the invention, the chamber lid at a distance from its upper Limitation of outlet openings, with one provided with perforations above C 10 of these outlet openings Ring cantilever disk can be arranged. Further advantageous refinements of the invention can be found in the rest Characterized subclaims.

The inventive design is the feed of the elements to be cleaned to the autoclave or sterilizer. You only need the nebulization chamber and the fan wheel and bacterial filter from the combined to form a unit the surface of the housing provided plug connection can be released. The installation guarantees a perfect ! Function given. The air supply inside the nebulization chamber is protected against external influences. At the same time, according to the invention, there is a uniform distribution of air at the upper end of the nebulization chamber achieved.

An embodiment of the invention is shown in the drawing and is described in more detail below. The single figure shows a schematic vertical section through the most essential parts of the device.

On the housing 14 of the device is that in the fan wheel chamber 3 located fan wheel 4 with the bacterial filter 5, both of which are combined to form a structural unit are detachably arranged next to the nebulization chamber 1 by means of a plug connection. The nebulization chamber 1 is also connected to the housing 14 via a plug connection 13.

The liquid is atomized in the nebulization chamber 1 effect using the ultrasonic atomizer es, whereby the liquid is excited to longitudinal oscillations. As an ultrasonic vibration exciter serves a quartz disk 24 with retaining ring 25, which is attached to the lower boundary of the nebulization chamber 1 in a vibration chamber 26 is arranged. At the bottom 27 of the "Vibration chamber 26, the plug connection 13 is arranged * The vibration chamber 26 is surrounded by an air duct 31 which has an opening 32 for the supply of the Has drawn in air. This supply opening 32 has the same deokeness as the outlet opening 33 of the fan wheel chamber 3 ·

The liquid to be atomized can be water or an aqueous solution containing water-soluble drugs.

A delivery hose 11 is attached to the pre-misting chamber 1 connected, from which the aerosol emerges and optionally fed to the breathing process of a patient will. With or without a delivery hose 11, the aerosol can also be supplied to the ambient air.

The use of the device according to the invention is not limited to the medical sector. The use can also take place where there is an increase in

• · «· ·· t · · ■ tail

humidity is desired or required, e.g. in the food industry, leather processing, in museums, libraries and IT rooms. In addition, optical effects can also be achieved within certain limits

The motor 2 _t, which can be driven by any energy source, for example by a battery, is from the

§ Fan wheel chamber 3 separated airtight and watertight. These

χ 10 Separation takes place through the continuous housing 14, the has a strength reduction at the corresponding point. It is also possible to make airtight and watertight

ι to use a separate safety film for separation.

The connection between motor 2 and fan wheel 4 is made via a magnetic coupling. This magnetic coupling exists from the two magnetic disks 12 and 12 '. The fan wheel 4 is a radial fan which sucks in the air axially and emits radially.

20th

In the nebulization chamber 1 there are two vertically ( ) running air channels 6 are arranged, which are at the bottom with the fan wheel chamber 3 in connection and at the top a retaining ring 9 are connected. On. this retaining ring 9 is provided with openings 34 Distribution and receiving ring 35 for the chamber cover 7 detachably connected. On the distributor and receiving ring 35 a level tube 36 is arranged. On the chamber lid 7 outlet openings 37 are provided. The chamber cover 7 also has a connection for the exhaust hose 11. The outlet openings 37

- 10 -

of Xannnexdeeköls 7 are in decency from the upper limit arranged, above the outlet openings 37 a Mng collar with holes 38 39 is provided.

Claims (12)

1. Device for generating an aerosol with a a liquid by means of a vibration generator (24; 25) atomizing and the aerosol emitting nebulization chamber (1) and one driven by a motor (2) and housed in a separate chamber (3) Iiüfterrad (4), which sucks air through a bacteria filter (5) and the sucked air over a connecting line feeds the upper part of the nebulization chamber (1), the fan wheel (4) over a magnetic coupling acting through a partition between the motor (2) and fan wheel (4) (12; 12) is connected to the motor (2), characterized in that that the fan wheel (4) and the bacterial filter (5) are combined to form a structural unit and are detachably arranged on the outside of the housing (14) next to the nebulization chamber (1) » 2. Apparatus according to claim 1, characterized in that the joined together to form a structural unit Parts (4; 5) and the nebulization chamber (1) each via a plug connection (13) to the housing (14) are connectable « 3. Apparatus according to claim 1 or 2, characterized in that one or more vertically extending air ducts (6) are arranged in the nebulization chamber (1) , which are connected at the bottom with the lifter wheel chamber (3) and at the top on a retaining ring (9 ) are connected. 4. Device according to one of claims 1 to 3, characterized in that below the Vernebelungskanmer (1) the known vibration generator (24j25) arranged in a special vibration chamber (26) is, on the bottom (27) of which the plug connection (13) is arranged. 5. Device according to one of claims 1 to 4, characterized in that the Sehwingungskaminer (26) of an air duct (31) is surrounded which has an opening (32) for supplying the sucked air. 6. Device according to one of claims 1 to 5, characterized in that the feed opening (32) of the Air channel (31) is arranged congruent with the outlet opening (33) of the fan wheel chamber (3). 7. Device according to one of claims 1 to 6, characterized in that a distributor and receiving ring (35) provided with openings (34) for the chamber cover (7) is arranged on the holding ring (9) * ft ft ft »ft ft» I ft ft ι. η ft · K ft » 8. Apparatus according to claim 7, characterized in that
that the distribution and receiving ring (35) releasably on
Retaining ring (9) is connected «f 9. Device according to one of claims 1 to 8, da- | characterized in that on the distributor and receiving ring (35) sin level tubes (36) are arranged is· / 10 10. Device according to one of claims 1 to 9, j characterized in that the chamber cover (7) Aus' openings (37) and a connection for a f Has dispensing hose (11). f 11 · Device according to claim 10, characterized in that
that the outlet openings (37) of the chamber lid
(7) are arranged at a distance from its upper limit, 12. Apparatus according to claim 10 and 11, characterized in that that above the outlet openings (37) ' the chamber cover (7) is provided with an annular cantilever disc (39) provided with perforations (38) 13 · A device according to any one of claims 1 to 12, characterized in that the fan wheel (4) Ra I is diallüfter. I. - Description - 4 -