DE222847C

DE222847C -

Info

Publication number: DE222847C
Application number: DENDAT222847D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

■■- M 222847 KLASSE 27ö. GRUPPE■■ - M 222847 CLASS 27 Ö. GROUP

Patentiert im Deutschen Reiche vom 7. Dezember 1907 ab.Patented in the German Empire on December 7, 1907.

Die Erfindung" bezieht sich auf solche Luftverdünnungspumpen, bei denen der schädliche Raum durch die Verwendung von Öl aufgehoben wird, das mit der Luft zusammen die Pumpe durchströmt. Bei diesen Pumpen werden Luft und Öl innig zusammengemischt und hierdurch eine Menge kleiner und großer, in ölhäutchen eingeschlossener Luftblasen gebildet, die das Vakuum in hohem Grade ungünstig beeinflussen. Dieser Übelstand tritt besonders bei solchen Pumpen auf, bei denen das.während eines Teiles des Hubes aus dem Pumpenzylinder herausgedrückte ölluftgemisch beim Rückgang des Kolbens unmittelbar in den Pumpenraum zurückfließen kann.The invention "relates to such air dilution pumps in which the harmful Space is eliminated by the use of oil, which flows through the pump together with the air. These pumps will be Air and oil intimately mixed together and as a result a lot of small and large, in Oil skin trapped air bubbles are formed, which the vacuum is highly unfavorable influence. This inconvenience occurs particularly with pumps in which the oil-air mixture pressed out of the pump cylinder during part of the stroke can flow back directly into the pump chamber when the piston drops.

Man hat daher vorgeschlagen, die Zu- und. Abführungswege für das Öl zu trennen und die Luftblasen auf dem Wege abzuscheiden, auf welchem das Öl dem Pumpenraum wieder zugeführt wird. Bei den bekannten. Luftverdünnungspumpen wird diese Abscheidung dadurch erreicht, daß das öl dem Pumpenraum durch eine hohle Kolbenstange zugeführt wird, in der die Luftblasen an die Oberfläche des Öles emporsteigen können. Die Trennung von Luft und Öl ist aber hierbei keine vollkommene, da die kleineren Blasen zu langsam aufsteigen, um noch an die Oberfläche gelangen zu können, bevor das öl in den Pumpenraum eintritt. .It has therefore been proposed that the supply and. To separate discharge routes for the oil and to separate the air bubbles on the way, on which the oil is fed back to the pump chamber. With the known. Air dilution pumps this separation is achieved in that the oil is in the pump chamber is fed through a hollow piston rod in which the air bubbles reach the surface of the Oil can rise. The separation of air and oil is not a perfect one, since the smaller bubbles rise too slowly to be able to reach the surface, before the oil enters the pump chamber. .

Gemäß der Erfindung wird eine möglichst vollkommene Abscheidung der im Öl enthaltenen Luftbläschen dadurch erzielt, daß vor dem Kanal, durch welchen das Öl in den Pumpenraum zurücktritt, ein Filter angeordnet ist.According to the invention, the most complete possible separation of those contained in the oil is achieved Air bubbles achieved in that in front of the channel through which the oil into the pump chamber withdraws, a filter is arranged.

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Fig. ι der Zeichnung zeigt als Ausführungsform der Erfindung" eine besonders für Eismaschinen bestimmte Luftverdünnungspumpe in senkrechtem Schnitt,Fig. Ι of the drawing shows as an embodiment of the invention "one especially for ice machines certain air dilution pump in vertical section,

Fig. 2 den im Schnitt dargestellten unteren Teil einer zweiten Ausführungsform der Erfindung. 2 shows the lower part, shown in section, of a second embodiment of the invention.

α ist der Pumpenzylinder, der durch eine Öffnung b mit demjenigen Raum, in welchem die Luft verdünnt werden soll, in Verbindung steht. Der Zylinder α ist unten mittels eines angeschraubten Bodens c geschlossen, während sein Deckel d mit den Wandungen ein Stück bildet. α is the pump cylinder, which is connected through an opening b to the space in which the air is to be diluted. The cylinder α is closed at the bottom by means of a screwed-on base c , while its cover d forms one piece with the walls.

Im Pumpenzylinder α kann sich ein Kolben auf und ab bewegen, der aus einer Oberplatte f und einer Unterplatte g besteht. In bekannter Weise ist in der Oberplatte f eine Anzahl Löcher h und in der Unterplatte g ein Ventil k vorgesehen, das sich nach dem Innenraum des Kolbens öffnet. Der Kolben wird von einer Kolbenstange m getragen, die ein ringförmiges Ventil η im Deckel d durchdringt.A piston consisting of an upper plate f and a lower plate g can move up and down in the pump cylinder α . In a known manner, a number of holes h are provided in the top plate f and a valve k is provided in the bottom plate g, which valve opens towards the interior of the piston. The piston is carried by a piston rod m which penetrates an annular valve η in the cover d.

Auf dem Pumpenzylinder α ist ein Krummzapfengehäuse p befestigt. In diesem Gehäuse ist eine Konsole q angeordnet, welche das Steuerlager für die Kolbenstange m und die Stützfläche für eine Feder r bildet, die das Bestreben hat, das Ventil η zu schließen. Das Gehäuse p wird oben von einem mit Öffnungen 2 versehenen Deckel 1 geschlossen.A curved journal housing p is attached to the pump cylinder α. In this housing a bracket q is arranged, which forms the control bearing for the piston rod m and the support surface for a spring r which tends to close the valve η. The housing p is closed at the top by a cover 1 provided with openings 2.

Der Antrieb der Pumpe kann mittels Handkurbel, Rädervorgelege und Schwungrad geschehen, wie dies in der Zeichnung dargestelltThe pump can be driven by a hand crank, gear reduction gear and flywheel, as shown in the drawing

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Claims

is, or done by means of motor power. :

In or outside the wall "of the pump cylinder α there is a channel 3 which connects the interior of the housing p to the pump cylinder α and opens into the latter directly above the piston when it is in its lowest position. The other end of the channel 3 opens into the bottom of the housing p and with its mouth forms the seat for a valve 4, the rod 5 of which is guided through a bore in the bracket q and is fastened at the top in a sliding body 6. In the body 6 there is a recess 7 for the

^X 5 passage of the shaft u and a thumb 8 provided on the latter. In the recess 7 there is a stop 9 which is seated on the body 6 and which is influenced by the thumb 8 with each revolution of the shaft u. This opens the valve 4, which is under the influence of a closing spring 10.

On the cover d sits a filter 11 surrounding the valve body 4, which for example, as shown in FIGS. 1 and 2, can be designed as a double-walled hood, the walls of which are provided with openings for the oil and between them felt or some other filter material take up. The cover of this filter 11 is penetrated in an oil-tight manner by the valve 4 (FIG. 1).

When the pump is working, the elbow housing ρ is filled with oil approximately up to the lower edge of the elbow pin in its lowest position. As soon as the piston moves upwards from the position shown in FIG. 1, the air above it is compressed and driven through the valve η together with the oil. At the same time, air is sucked in through the opening b and, when the valve 4 is opened, at the same time oil is sucked in from the housing p under the piston. Before it can get into channel 3, the sucked-in oil must pass through filter 11, in which all air bubbles are retained.

When the piston moves down again, the oil has covered the opening b , and the air under the piston passes with the oil through the valve k and the holes h of the piston. As soon as the piston has reached 5 "of its lowest position, the oil fills all the space under the piston.

The passage cross section of the channel 3 can be regulated by means of an adjusting screw 12 will.

In the embodiment shown in FIG. 2, the channel 3 'is mounted in a known manner in the piston rod in which is enclosed at the top by a tube 13 fastened to the cover d. This tube also carries the filter 11. The upper opening 15 of the channel 3 is just opposite a hole 14 in the tube 13 when the piston has reached its highest position. In this position, the channel 3 can therefore be filled with oil which has flowed through the filter. When the opening 15 is just opposite the hole 14, the lowermost opening 16 of the channel 3 is blocked by the pipe 13 so that the air above the KoI-ben cannot flow out through the channel 3.

On the downward movement of the piston, the opening 16 is released, and it then becomes the oil is sucked into the cylinder α.

A screen wall 17 is attached to the underside of the filter 11, which prevents the air flowing out through the valve η from interfering with the flow of the oil to the filter. .

Ρλτεντ-Α ν saying:

Air dilution pump, in which the harmful space due to the application is canceled by flowing together with the air through the pump oil, characterized in that before Channel (3) through which the oil flows back into the pump chamber, a filter (11) is arranged to separate the air bubbles contained in the oil.

1 sheet of drawings.