Valve manifold device

Details Valve manifold device Valve manifold device

1999-10-26

2001-02-20

Fox, John (Department: 3753)

Fluid handling

Systems

With flow control means for branched passages

C137S269000

Reexamination Certificate

active

06189571

ABSTRACT:

This invention concerns a valve manifold device according to the preamble of claim
1
.
In a previously known valve manifold device a number of pressure fluid valves are mounted on a valve interface, which for the respective valve positions provides ports comprising openings to the connecting channels which connect longitudinal channels in the manifold with the valves to be mounted thereon. In a standard manifold device for 5/2 and 5/3 valves respectively there are normally three main channels, whereof the central one is usually used for pressure fluid supply whereas the ones positioned on the sides are used for return fluid. Some times however, the channels positioned at the sides are used for pressure air supply, whereas in that case the central channel comprises a return fluid channel. It is also common in certain manifold systems to use both solutions, which is possible by sealing the channels somewhere along the length of the manifold device and feed from both directions. This way pressurized air may be supplied in the same channel/channels or in different channels. One reason for the desire to feed in the channels at the sides, is the desire for different feed pressures, for example when the consumer is a cylinder with a great load to be moved vertically. In the downward movement the gravity force co-operates with the return side force, resulting in high acceleration in case the return pressure is not reduced. It is also usual, even in other applications, to use a lower return pressure than forward pressure in order to save pressurised air and energy.
Further, sometimes it is desired to provide separate pressure supply to a specific valve on the manifold device, which according to the prior art has been realised in that the manifold later has been modified at the position of that valve, which results in a complicated and expensive solution. In cases where electric leads are integrated in valve manifold devices consisting of stacked plates, also the electric circuit has to be changed when modifications of the installation are called for, such as when exchanging one manifold plate or putting in an extra manifold plate into the manifold device.
Further, there is often a desire to provide manifold devices with different valves, for example both 3/2 valves and 5/2 valves, whereby the above mentioned problem with respect to sealing and adjusted supply must be addressed.
The invention aims to eliminate the problems of the prior art.
This aim is obtained according to the invention in a valve manifold device according to the above through the features of the characterising portion of claim
1
.
By this way the connecting channel being controllable through the application of a chosen modular body, the valve function may easily be chosen. When the modular body is adapted to connect the portions, connection is achieved between the supply channel and the valve. By blocking the first portion and lead on the second portion, possibility of separate feeding the valve is simply achieved. By blocking both portions, this part of the valve is immobilised. The invention thus simply provides the possibility of arranging supply with a desired pressure for separate valves at separate valve positions.


REFERENCES:
patent: 3391703 (1968-07-01), Kay
patent: 3513876 (1970-05-01), Tarbox
patent: 4041972 (1977-08-01), Hoepfl et al.
patent: 4951709 (1990-08-01), Kirkham

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