Fluid handling – Convertible – Unit orientable in a single location between plural positions
Patent
1996-05-14
1998-06-09
Lee, Kevin
Fluid handling
Convertible
Unit orientable in a single location between plural positions
25112915, 25112903, F16K 3106
Patent
active
057620970
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a modular valve for fluids comprising a valve housing having a plurality of fluid ports, a switching rocker which is adapted to be inserted into the valve housing and is spring-loaded into an initial position, and an electromagnetic valve drive adapted to be fitted, opposite to the switching rocker, to the valve housing, by means of which drive the switching rocker can be moved into a working position against such spring-loading, at least one fluid port opening at a valve seat, against which a valve member, provided on the switching rocker, may be applied.
In practice, dependent on applications, modifications may be required more especially at the fluid and electrical interfaces of the valve. In the case of designs so far used this generally means that more or less the entire valve must be accordingly altered. Accordingly for different applications valves are employed differing in their overall structure.
In order to produce different ways of operating of solenoid valves it is a known expedient to direct the volumetric flow into respective ducts using so-called shunting plates. In this respect the inherent type of connection on the valve is adhered to. In the ducts carrying the redirected volumetric flow there is then however a substantial flow loss. A further disadvantage is that the shunting plate leads to a larger overall size of the valve. Furthermore in conventional solenoid valves a modification in the fluid containing part is only possible by replacement of parts, by for example, fitting different spring elements. This again is something rendering necessary stockholding of a large number of different parts. Apart from the fact that such stockholding is cost-intensive, the large number of the parts always means that there is also a danger of confusion of parts with the result that a particular production process may be impeded.
One aim of the invention is to create a modular valve of the type initially mentioned, which while adhering to a generally uniform basic structure may be readily adapted, more particularly as well as regards the requirements of various different electrical and fluid porting systems.
In order to achieve this object the invention has the provision that between the valve housing and the electromagnetic valve drive a generally magnetically non-conductive plate is able to be inserted having locally limited magnetically conductive regions for the electromagnetic valve drive to act through on one of two limbs of the switching rocker, whereas the other limb is not able to be acted upon magnetically, that valve members provided at the opposite ends of the switching rocker and poles of the electromagnetic valve drive are arranged symmetrically with respect to a plane containing, in the assembled state of the valve, the axis of the rocker and perpendicular to the intermediate plate, and that the valve housing, the switching rocker with such associated spring loading means, the intermediate plate and/or the electromagnetic valve drive, able to be coupled with an electrical connection part, are able to be mounted alternatively in two positions spaced angularly by 180.degree. about an imaginary axis which is perpendicular to the rocker axis and in the plane of symmetry.
Owing to this design a more particularly uniform valve drive may be employed for different valve designs. By the arrangement of different electrical connection parts and furthermore different valve housings for the fluid, which are respectively designed in a modular manner, the valve may be adapted to the requirements applying without difficulty. Different requirements as regards the design of the electrical connections and fluid ports may be more particularly coped with since the switching rocker with the associated spring loading means, the intermediate plate and/or electromagnetic valve drive, able to be coupled with an electrical connection part, are able to be alternatively respectively mounted in two different positions angularly spaced by 180.degree..
Owing to symmetrical arrangement of the ma
REFERENCES:
patent: 4534381 (1985-08-01), Hozumi et al.
Hettinger Christoph
Kalb Helmut
Renninger Jurgen
Rohrbeck Heribert
Burkert Werke GmbH & Co.
Lee Kevin
Safran David S.
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