MXPA97003295A - Manio electromagnetic valve - Google Patents

Abstract

The present invention relates to an electromagnetic actuating valve, characterized in that it comprises a housing for the coil, a valve housing having a connector for the incoming input of a medium whose pressure is to be maneuvered, the valve housing has a chamber connected to the ambient atmosphere and a valve means that maneuvers the communication between the chamber and the medium introduced in the valve housing for opening when the medium exceeds a predetermined positive pressure, a diversion channel connected to the ambient atmosphere , and a suction valve that maneuvers the communication between the deflection channel and the medium introduced into the valve housing when the medium is at a negative pressure exceeding a predetermined negative pressure, the valve means comprises a valve plate. facing a valve seat in the valve housing, to selectively open and close a valve opening in the valve seat for connecting and disconnecting respectively the means introduced into the valve housing from the chamber, a basket that slidably supports the valve plate, and a spring or spring between the basket and the plate of the valve. valve for pushing the valve plate against a stop means provided on the basket, an electromagnet in the coil housing that includes a frame that acts on the basket to move the basket when the electromagnet is energized to apply the plate of the valve against the seat of the valve, and cause the valve plate to be lifted from the stop means, the valve plate then being held on one side thereof for which the positive pressures of the medium tend to displace the plate of the valve out of the seat and on the other side of the spring, pushing the valve plate against the seat, whereupon, when the medium has a positive pressure per above the predetermined value of the positive pressure, the valve plate will be forced out of the seat to release the positive pressure, and when the medium has a negative pressure below the predetermined value of negative pressure the suction valve will open and the pressure will increase

Description

ELEVATION VALVE »MANUFACTURING CTROMAGNETICS DESCRIPTION OF THE INVENTION The invention relates to an electro-magnetic maneuvering valve, especially for an application in internal combustion engines, according to the preamble of claim 1. In internal combustion engines operating valves are used for various control functions; - for example, DE-41 40 255 discloses a control valve used in an air evacuation device for a fuel tank of an internal combustion engine, which controls the flow into the atmosphere outside of a ventilation pipe. The ventilation pipe, which can be closed, allows you to adjust negative and negative pressures in the installation, in order to check its suitability for operation. In this operating valve, it is provided that, above a positive pressure preset in the installation, the pressure force produced is sufficient to open the shut-off valve and thereby make it possible to discharge the pressure without sleep. produce damage. This function is achieved by causing the magnetic circuit that moves the closing port of the valve to the closed position, when energized, to have REF = 24407 only the force necessary so that, above a preset positive pressure, the pressure force produced, in this way, is sufficient to move the closing part of the valve towards the opening position. In this device there is the drawback that, due to the large unitary dispersions of the magnetic coil and due to the small area of pressure acting on the closing part of the valve, various devices are formed between the various installations. pressure differences that are not tolerable, which in certain circumstances can cause their destruction. From DE-44 30 723 it is known - a control valve of the general class indicated, in which, in one embodiment, there is a bypass in the connecting tube sleeve or in the connecting channel, in the that the valve seat is located, in whose branch a suction or pressure valve is located which controls the passage of a bypass channel in bypass to the valve seat. Therefore, starting from a control valve -of the general class indicated, the object of the present invention is to configure this valve so that it is possible to install a pressure and suction valve, without requiring more space for it. This object is solved by means of the features indicated in claim 1, other advantageous variants being indicated in the dependent claims. An exemplary embodiment of the invention is shown in the attached drawing, which is described below. The drawing shows a section through an electric control valve 1 constructed according to the invention, which can be used, for example, for the air evacuation device of a combustion tank of a combustion engine. internal This valve consists of a casing 2 for the coil and a casing 3 of the valve, the casing 3 of the valve having a connecting tube sleeve 4 for the medium whose oaso-5 is to be controlled, so that said tube cuff - leads, through a valve seat 5, to a chamber 6 ventilated from the outside atmosphere, and then to the outside atmosphere 9 through a bypass bypass channel 7 with a suction valve 8. 20 The housing 2 for the coil has a coil body 10 with contact pins 11, as well as an armature plate 12. In a central bore 13 there are located an armature core 14 and a support part 15 for an inductor 16 of the magnet, the core 14 of the armature having a through hole 17, which leads to the chamber 6, ventilated from the external atmosphere of the housing 3 of the valve. However, according to the present invention it is provided that the valve seat 5 of the valve housing 3 acts together with a plate 18 of the valve, which is fastened inside an intermediate cage 19 and is pressed by means of a spring 20. against axle stops 21 of the intermediate cage 19, the intermediate cage 19 being radially and axially supported inside the chamber 6 and pressed against a magnet inductor 16 by the force of a spring 22, and being displaced by this inductor of the magnet when performing the magnetization in the direction of the seat 5 of the valve, so that the plate 18 of the valve then rests against the seat 5 of the valve and thus rises, separating from the axial stops. of the intermediate cage 19. As can be seen from the drawing, the intermediate cage 19 is formed apart from a round base plate 23, which has on one side several ribs -24, which in turn have the axial stops 21 and - serve as a guide to the springs 20 which press on the valve plate 18, and on the other side have a bar projecting lug 25, which protrudes from the outside of the passage opening 17 and is pressed against it. inductor 16 of the magnet by the force of the spring 22, placed between a wall 26 of the chamber 6 and the outer edge of the base plate 23. Advantageously, it is provided that between the connecting tube 4 and the bypass channel in bypass 7, there is located a chamber 27 of the suction valve, which is separated from the outside atmosphere by means of "a socket 28 of the valve seat, which has a bypass bypass 7, of So that the socket 28 of the valve seat acts together with the plate 29 ~ of the suction valve 8, said plate being pressed by a spring 30 located inside the chamber 27 of the valve. As can be seen from the drawing, the outlet part of the socket 28 of the valve seat is protected against dirt by means of a cover 31 inserted into the valve housing 3. Thanks to the fact that the plates 18 and 19 of the valve, as well as the springs 20 and 30 are subjected to the same conditions - as regards the surface and the force * - the valve plates are dried out from the valve seats upon reaching the same pressure differential, previously determined. By means of the large plates of the valves, located in a space-saving manner, this pressure difference can be adjusted very easily with a very small unitary dispersion. It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one - for the manufacture of the objects to which it refers. Having described the invention as above, property is claimed as contained in the following »

Claims (3)

i- i and. i N ° i A ¡L o- .í E s

1. - Electromagnetic switching valve, in particular for use in an internal combustion engine, composed of a housing for the coil and a car valve housing, the valve housing having an outgoing connecting pipe for the medium which is desired by trolling, so that said tube leads through a valve seat to a ventilated chamber from the outer atmosphere and, through a bypass bypass channel with a suction valve, to the outside atmosphere , characterized in that the seat of the valve acts together with a valve plate, which is inserted into an intermediate cage and is pressed by means of a spring against axial stops of the intermediate cage, the intermediate cage being radially supported and axially inside the chamber and being pressed by the force of a spring against a magnet inductor and being moved by it in the direction of the valve seat to the to be magnetized, so that the valve plate is reached * against the seat of the valve and thus rises, separating from the axial stops of the intermediate cage.

2. Control valve according to claim 1, characterized in that between the connection tube sleeve and the bypass bypass channel is located -a suction valve chamber, which is limited -to the external atmosphere by means of A valve seat bushing having a bypass channel in the -bypass, so that the valve seat bushing acts together with a plate of the suction valve, which is pressed by a spring located inside the valve chamber. The valve.

3. Operation valve according to claims 1 or 2, characterized in that the valve plates and the springs are synchronized with each other as regards their surfaces and forces, so that the valve plates, of this mode, when there is a -different pressures equal, prefixed, they rise from the valve seats. SUMMARY OF THE INVENTION Electromagnetic maneuver valve. In this valve, unit dispersions can be produced, which in certain conditions can lead to the destruction of the installation in which the valve is being used. Therefore, in this operating valve it is provided that the seat (5) of the valve acts together with a plate (18) of the valve, which is placed in an intermediate cage (19) and pressed by means of a spring ( 20) against the axial stops (21) of the intermediate cage (19), the intermediate cage (19) being radially and axially supported inside the chamber (6) and pressed against an inducer (16) of the magnet by the -force of a spring (22), which can be displaced by said magnet in the direction of the seat - (5) of the valve when the magnetization is carried out, so that the plate (1 * 1) of the valve comes to rest against the seat (5) of the valve and - thus lifting it, separating it from the axial stops (21) of the intermediate cage (19). By means of the valve plates, located so as to save space, a pressure difference can be adjusted very easily with a small unit dispersion. Drawing.