Electromagnetic valve
View Patent ↗An electromagnetic valve for a vehicle gas cylinder, said valve comprising: a valve body; an external thread section of the valve body, that can be screwed into an internal thread on the gas cylinder; a section of the valve body protruding into the gas cylinder; a shut-off piston; and electromagnetic control elements which can be used to displace the shut-off piston from a conducting position into a closed position. The valve body comprises a cavity for receiving the shut-off piston and the control elements, said cavity being located inside the thread section and/or in the section of the valve body protruding into the gas cylinder. In order to simplify the disassembly and assembly of one such valve, the mouth of the cavity is arranged on the head end of the valve body located outside the gas cylinder. The shut-off piston and the electromagnetic control elements can be inserted into the cavity through the mouth thereof.
1. Electromagnetic valve for a gas cylinder, comprising:
a valve body;
a threaded portion of the valve body with an external thread, which is screwable into an internal thread on the gas cylinder;
a portion of the valve body projecting into the gas cylinder;
a shut-off piston;
electromagnetic control elements by which the shut-off piston is movable from an open position to a closed position, wherein the valve body for receiving the shut-off piston and the electromagnetic control elements has a cavity which is disposed inside at least one of: the threaded portion and the portion of the valve body projecting into the gas cylinder, and wherein a mouth of the cavity is disposed on a head end of the valve body situated outside of the gas cylinder, and the shut-off piston and the electromagnetic control elements can be inserted into the cavity through the mouth; and
a manual shut-off valve for interrupting gas flow from the gas cylinder to the cavity.
2. Electromagnetic valve according to claim 1 , wherein disposed in a region of the mouth of the cavity is an external thread into which a screw cap is screwable.
3. Electromagnetic valve according to claim 1 , wherein the valve body has at least one further receiving space for a further element, and wherein the further element can be inserted into the receiving space through an opening situated outside of the gas cylinder.
4. Electromagnetic valve according to claim 3 , wherein the further element is at least one of the following elements:
a connection coupling without a non-return valve,
a connection coupling with a non-return valve,
a safety element with rupture diaphragm for protecting against excessively high pressure,
a safety element with a fluid-filled glass body for thermal protection,
and any combination thereof.
5. Electromagnetic valve according to claim 4 , wherein the gas cylinder is attached to a motor vehicle with a passenger compartment, wherein the valve comprises a plurality of safety elements which have an efflux opening situated outside of the gas cylinder, and wherein all of the efflux openings are disposed on the valve body at a side remote from the passenger compartment.
6. Electromagnetic valve according to claim 1 , wherein the valve body has at least one flow channel connecting the cavity to at least one coupling piece outside of the gas cylinder.
7. Electromagnetic valve according to claim 1 , wherein the valve body comprises at least one flow channel connecting the cavity to a mouth into the interior of the gas cylinder.
8. Electromagnetic valve according to claim 7 , wherein a flow restrictor is disposed on the mouth into the interior of the gas cylinder.
9. Electromagnetic valve according to claim 1 , wherein the valve body comprises at least one flow channel connecting at least one receiving space to a mouth into the interior of the gas cylinder.
10. Electromagnetic valve according to claim 9 , wherein a flow restrictor is disposed on the mouth into the interior of the gas cylinder.
11. Electromagnetic valve according to claim 1 , wherein a filter is disposed on a mouth into the interior of the gas cylinder.
12. Electromagnetic valve according to claim 1 , wherein a protective device against mechanical actions is provided on the head end of the valve body situated outside of the gas cylinder.
13. Electromagnetic valve according to claim 12 , wherein the protective device is a protective plate.
14. Electromagnetic valve according to claim 13 , wherein the protective plate has at least one support rib.
15. Electromagnetic valve according to claim 13 , wherein an elastic layer is disposed between the protective plate and the head end of the valve body.
16. Electromagnetic valve according to claim 15 , wherein the elastic layer is made of a thermoplastic polymer.
17. Electromagnetic valve according to claim 12 , wherein the head end of the valve body has rounded or chamfered edges.
18. Electromagnetic valve according to claim 1 , wherein the head end of the valve body is designed as a polygon.
19. Electromagnetic valve according to claim 18 , wherein the polygon is a quadrilateral or hexagon.
20. Electromagnetic valve for a gas cylinder, comprising:
a valve body;
a threaded portion of the valve body with an external thread, which is screwable into an internal thread on the gas cylinder;
a portion of the valve body projecting into the gas cylinder;
a shut-off piston;
electromagnetic control elements by which the shut-off piston is movable from an open position to a closed position, wherein the valve body for receiving the shut-off piston and the electromagnetic control elements has a cavity which is disposed inside at least one of: the threaded portion and the portion of the valve body projecting into the gas cylinder, and wherein a mouth of the cavity is disposed on a head end of the valve body situated outside of the gas cylinder, and the shut-off piston and the electromagnetic control elements can be inserted into the cavity through the mouth; and
a protective device against mechanical actions provided on the head end of the valve body situated outside of the gas cylinder, wherein the protective device is a protective plate, wherein the protective plate has at least one support rib, and wherein disposed in the protective plate is at least one cutout which is situated close to the at least one support rib.
21. Electromagnetic valve, comprising:
a valve body, wherein said valve body includes an attachment mechanism and a projection portion that projects into a gas cylinder;
a shut-off piston;
electromagnetic control elements that control movement of the shut-off piston from an open position to a closed position, wherein the valve body includes a cavity disposed in the projection portion, and wherein a mouth of the cavity is disposed on a head end of the valve body distal from the projection portion, and wherein the shut-off piston and the electromagnetic control elements are disposed in the cavity and are externally accessible through said mouth of the cavity; and
a manual shut-off valve for interrupting gas flow from the gas cylinder to the cavity.
22. Electromagnetic valve according to claim 21 , wherein the shut-off piston is disposed in a substantially freely displaceable manner in the valve body.
23. Electromagnetic valve according to claim 22 , further comprising:
a pressure reduction channel in the shut-off piston, wherein the pressure reduction channel connects a rear of the shut-off piston facing the electromagnetic control elements to a front of the shut-off piston.