DE215421C

DE215421C -

Info

Publication number: DE215421C
Application number: DENDAT215421D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

KLASSE 8e. GRUPPECLASS 8e. GROUP

Patentiert im Deutschen Reiche vom 22. Oktober 1908 ab.Patented in the German Empire on October 22, 1908.

Die Erfindung bezieht sich auf jene bekannte Art von Düsen für Staubsaugevorrichtungen, die mit einem Hilfslufteinlaß versehen sind, welcher sich selbsttätig öffnet, sobald die Drosselung der Saugmündung der Düse durch die behandelte Fläche einen bestimmten Grad erreicht hat.The invention relates to that known type of nozzle for vacuum cleaning devices, which are provided with an auxiliary air inlet which opens automatically as soon as the throttling of the suction port of the nozzle by the treated area a certain Degree has reached.

Gemäß der vorliegenden Erfindung ist im Innern der Düse dicht über der Saugmündung ein Rohr angebracht, das mit der Außenluft durch ein Rückschlagventil und mit dem Düseninnern durch einen nach der Saugmündung zu gerichteten Längsschlitz in Verbindung steht. Durch diese Einrichtung wird der Vorteil erzielt, daß eine gleichmäßige Verteilung der einströmendan Luft gesichert wird. Gegenüber den bisher bekannten Vorrichtungen unterscheidet sich die vorliegende Düse auch noch dadurch, daß an Stelle der am Hilfslufteinlaß vorgesehenen Klappen durch Federn betätigte Kugelventile zur Regelung des Lufteinlasses verwendet werden. Während sich bei den Klappen der bisher bekannten Düsen an dem Drehpunkt leicht Staub und Schmutz ansetzen kann,' wodurch ein dichtes Abschließen der Klappen in Frage gestellt ist, sind diese Übelstände bei der Düse gemäß der Erfindung infolge der Anordnung von Kugelventilen vermieden. Ein weiterer Vorteil der vorliegenden Düse besteht darin, daß sich dieselbe' gegenüber den bekannten Düsen vor allem durch große Einfachheit auszeichnet. . .According to the present invention, the interior of the nozzle is just above the suction mouth a pipe attached, which with the outside air through a check valve and with the Inside the nozzle through a longitudinal slot directed towards the suction mouth stands. This device has the advantage that a uniform distribution which is secured against the inflow of air. Compared to the previously known devices The present nozzle also differs in that instead of the am Auxiliary air inlet provided flaps by spring operated ball valves for regulation of the air inlet. While the flaps of the previously known Nozzles can easily collect dust and dirt at the pivot point, 'which means a tight sealing of the valves is in question, these deficiencies are with the Avoided nozzle according to the invention due to the arrangement of ball valves. A Another advantage of the present nozzle is that the same 'over the known nozzles are characterized primarily by great simplicity. . .

In den Zeichnungen, die eine Ausführungsform des Erfindungsgegenstandes veranschäu- liehen, stellt Fig. 1 eine Rückansicht einer Saugdüse dar. Fig. 2 zeigt die Düse in Ansicht. Fig. 3 ist ein Schnitt nach der Linie χ der Fig. 1. Fig. 4 zeigt die Düse von unten. Fig. 5 ist ein Schnitt durch einen Teil der Düse und veranschaulicht im größeren Maßstabe die Ventileinrichtung. Fig. 6 zeigt das in der Düse angeordnete. Rohr in schaubildlicher Darstellung. Die Fig. 7 und 8 stellen Einzelheiten der Verschlußstücke für dieses Rohr dar. Fig. 9 ist ein senkrechter Schnitt durch einen Teil des unteren Düsenkörpers in größerem Maßstabe und veranschaulicht die Wirkungsweise bei der Anwendung der Saugdüse bei losen Geweben. Fig. 10 ist eine ahnliehe Darstellung, die die Wirkungsweise, bei einer festen Unterlage veranschaulicht. Die Fig. 11 und 12 veranschaulichen die Anwendbarkeit der neuen Düsenform für verschiedene besondere Zwecke.In the drawings which illustrate an embodiment of the subject matter of the invention, FIG. 1 shows a rear view of a suction nozzle. FIG. 2 shows the nozzle in perspective. Fig. 3 is a section along the line χ of Fig. 1. Fig. 4 shows the nozzle from below. Figure 5 is a section through part of the nozzle and illustrates, on a larger scale, the valve means. Fig. 6 shows that arranged in the nozzle. Pipe in a graphical representation. Figures 7 and 8 show details of the plugs for this tube. Figure 9 is a vertical section through part of the lower nozzle body on a larger scale and illustrates the operation of the suction nozzle in use on loose tissues. Fig. 10 is a similar diagram illustrating the mode of operation with a solid base. Figures 11 and 12 illustrate the utility of the new nozzle shape for various special purposes.

Der Düsenkörper 1 ist von länglicher Form. Er läuft nach oben verjüngt zu und geht,in einen Ansatz 2 von kreisrundem Querschnitt über, der mit Außengewinde 3 versehen ist und zum Aufschrauben eines Verbindungsrohres 4 (Fig. 11 und 12) dient, mittels dessen die Düse an die Saugvorrichtung angeschlossenThe nozzle body 1 is elongated in shape. It tapers upwards and goes in an approach 2 of circular cross-section about, which is provided with external thread 3 and for screwing on a connecting pipe 4 (Fig. 11 and 12) is used, by means of which the nozzle is connected to the suction device

Claims

will. As can be seen from the drawings, the lower widened part of the nozzle body is in a known manner at an angle to the direction of the nipple 2, so that the nozzle can be conveniently used at angles or on perpendicular surfaces, as shown in FIGS is illustrated. Along the slot-shaped nozzle mouth. 5 and in the middle of a tube 6 is attached, the. 10 is expediently fastened on one side in the nozzle body by means of screw thread 7 and on the other end with a slot 8. is provided for applying a screwdriver. In addition, the pipe 6 is equipped with screw threads 9 and 10 on the inside at both ends. One end 9 is closed by a plug 11 provided with a slot 15, while a hollow plug 14 is screwed into the other end, which is also provided with slots 16 for inserting the screwdriver. In the tube a coil spring 12 is used, which is supported with one end against the plug 11 and with the other against a valve ball 13, the diameter of which is slightly smaller than that of the tube 6. The ball 13 is located on the inner edge of the hollow plug ti, which thereby forms the seat for the ball valve. On the underside, the tube 6 is provided with a slot 17 which extends approximately over the entire length of the nozzle mouth. 5. extends. The length of the coil spring 12 is such that when the nozzle is used in conjunction with an area of sufficiently loose tissue to allow the full flow of air corresponding to the vacuum in the nozzle to pass through, the ball 13 is firmly against the inner end of the hollow Stopper 10 is pressed. If, however, a material is processed, the fabric of which is not loose enough to allow the necessary air passage, the ball 13 is pressed inward against the action of the spring 12 by the pressure of the outside air. This inward movement of the ball corresponds to the degree of throttling of the nozzle orifice by the treated tissue. Since the ball 13 has a smaller diameter than the tube 6, the air entering through the valve can flow around the ball and through the longitudinal slot 17 of the tube, where it hits the surface of the treated substance and from here around the Sides of the pipe 6 around under the action of the air pipes in the upper part of the nozzle 1 flows. This effect is clearly illustrated in FIG. The tube 6 is far enough away from the lower edge of the nozzle opening 5 to make it impossible for it to be adversely affected by the fibers of the treated fabric being torn up. Of course 6 check valves can be arranged at both ends of the pipe. For this purpose it is only necessary to insert a second ball 13 and an associated second plug 14 in place of the plug 11 in the pipe. The threads 9 and 10 can remain so that the plugs can be interchanged with one another as desired. The device described adapts itself in its effect to the conditions of each surface in which it is used by allowing a substantially constant flow of air against the fibers of the treated fabric, the air current either penetrating directly through the fabric if it is namely a loose fabric, or partly through the fabric and partly through the upper fibers of the latter, if it is a moderately loose fabric, or finally exclusively against the surface of the fabric, if this closes the nozzle mouth very tightly. The nozzle can be used to clean carpets, upholstered furniture, draperies, wall hangings and the like without the objects in question having to be removed from their normal position. Pa τ en τ claims:

1. Nozzle for dust extraction devices with automatically acting auxiliary air inlet, characterized in that inside A pipe is attached to the nozzle just above the suction mouth, which communicates with the outside air through a check valve and with the nozzle inside through one after the Suction opening is connected to directed longitudinal slot.

2. nozzle for. the dust extraction devices according to claim 1, characterized in that: indicates that the pipe (6) extending over the entire width of the nozzle one or both ends is provided with a valve ball (13) which is supported by an im Pipe lying spring is pressed from the inside against the inlet opening of the pipe.

3. "Nozzle for dust extraction devices according to claim 2, characterized in that that the seat for the ball valve (13) is screwed into the pipe end in question Hollow plug (14) is formed.

1 sheet of drawings.