Pipe joints or couplings – End to side or plate – Sput
Patent
1996-10-18
1998-11-03
Nicholson, Eric K.
Pipe joints or couplings
End to side or plate
Sput
285212, 285368, 285194, 285420, F16I 2300
Patent
active
058297944
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a vacuumtight connection between a channel opening into the surface of the housing of an appliance, pump or the like, and a line having a flange with a sealing surface at the end to be connected to the channel.
It is known to employ flange components for providing a vacuumtight connection between appliances, pumps or alike and feed or discharge lines. At the point where the channel opens out into the surface of the housing there is commonly provided a connecting sleeve with a flange. Also the line which is to be connected to the connecting sleeve is equipped with a flange. The connection itself is made by fitting the flanges together and securing them in place by means of a clamping ring or other flange connecting components. Generally, sealing rings made of plastic, rubber or also metal are provided for vacuumtight connections of this kind. These sealing rings are located between the sealing surfaces in each case. Their nominal position is maintained with the aid of grooves, centering rings or similar.
Connection sleeves protruding from the housing of a pump, an appliance or alike, increase their volume. The risk of damaging the sealing surfaces at the protruding flanges is high. Finally, the space requirement necessary for providing the flange connection is high, since the use of both hands is required for attaching and fixing a clamping ring or other flange connecting components.
SUMMARY OF THE INVENTION
It is the task of the present invention to make the connection geometry of a vacuumtight connection between the housing of an appliance, a pump or similar and a line, more compact and user-friendly.
This task is solved by the present invention in that the sealing surface surrounding the opening of the channel on the housing side is located in the region of the surface of the housing, and where for the vacuumtight connection joint between the flange of the outer line and the housing surface, a securing plate is used which lies on the edge of the flange away from the housing once the connection has been made. In a connection designed in this manner, a protruding connection sleeve is no longer present. The occupied total volume is smaller and the risk of damaging sealing surfaces on protruding flanges is diminished.
Preferably the flange sealing surface on the side of the housing is located in a recess in the surface of the housing. This practically excludes the risk of damaging the sealing surface.
BRIEF DESCRIPTION OF THE DRAWINGS
Further advantages and details of the present invention shall be explained by referring to the design examples presented in drawing FIGS. 1 to 8.
Shown in drawing FIG. 1 is a connection in accordance with the present invention having a sealing surface at the plane of the surface of the housing,
shown in drawing FIG. 2 is a top view on to a securing plate,
shown in drawing FIGS. 3 and 4 are connections in accordance with the present invention having a sealing surface located in a recess in the surface of the housing and
shown in drawing FIGS. 5 to 8 is a design example giving the different positions of the components which are to be connected.
DESCRIPTION OF THE INVENTION
The following designations are used in the drawing figures:
FIG. 1 for the connections in accordance with the present invention,
FIG. 2 for the housing of an appliance, a pump or alike,
FIG. 3 for the inner channel opening into the surface of the housing,
FIG. 4 for the opening of channel 3,
FIG. 5 for the sealing surface surrounding the opening of channel 4 on the side of the housing,
FIG. 6 for the outer line which is to be connected to channel 3,
FIG. 7 for the flange of this line 6,
FIG. 8 for the sealing surface of flange 7,
FIG. 9 for the sealing ring located between the sealing surfaces 5 and 8,
FIG. 10 for the securing plate holding the flange 7 in its connected position and
FIG. 11 for the axis of the connection geometry.
In the design example according to drawing FIG. 1 the sealing surface 5 on the side of the housing extending perpendicul
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Englander Heinrich
Fischer Hans-Rudolf
Schulz-Hausmann Friedrich
Walter Wilhelm
Leybold Aktiengesellschaft
Nicholson Eric K.
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