Proportional valve for controlling a gaseous medium

A gaseous medium and proportional valve technology, applied in the field of proportional valves, can solve the problems of proportional valve wear, increased switching force load of the electromagnet, and wear of the valve seat, and achieve the effects of simple structure assembly, guaranteed sealing, and low wear

Inactive Publication Date: 2020-04-03
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent opening and closing of proportional valves can cause wear at the valve seat, especially when the closing element is used with an elastic sealing element
Furthermore, the frequent opening and closing of the valve leads to an increased load on the switching force of the electromagnet, which in turn leads to wear of the entire proportional valve

Method used

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  • Proportional valve for controlling a gaseous medium
  • Proportional valve for controlling a gaseous medium
  • Proportional valve for controlling a gaseous medium

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] figure 1 A first exemplary embodiment of the proportional valve 1 according to the invention is shown in longitudinal section. The proportional valve 1 has a valve housing 2 , wherein the valve housing 2 comprises a holding body 3 and a nozzle body 13 , which are gas-tightly connected to each other. A nozzle 131 is received in the nozzle body 13 . An electromagnet 24 is arranged in the proportional valve 1 , wherein the electromagnet 24 includes a solenoid coil 23 and a magnetic core 7 . Furthermore, an inner chamber 9 is formed in the valve housing 2 , in which an electromagnetic armature arrangement 25 is arranged to be movable.

[0027] The magnet armature arrangement 25 comprises the magnet armature 8 and a cylindrical connecting element 10 , wherein the connecting element 10 is received in a recess 22 of the magnet armature 8 and is thus fixedly connected to the magnet armature 8 , for example by a welding seam or by pressing. . Electromagnetic armature 8 is de...

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PUM

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Abstract

The invention relates to a proportional valve (1) for controlling a gaseous medium, in particular hydrogen, comprising a valve housing (2), wherein an interior space (9) is formed in the valve housing(2). A first closure element (16) is arranged in the interior space (9), wherein the first closure element (16) cooperates with a first valve seat (19) for opening or closing a first through-opening(14). In addition, a second closure element (36) is arranged in the interior space (9), wherein the second closure element (36) cooperates with a second valve seat (29) for opening and closing a second through-opening (20). The first valve seat (19) is formed on the second closure element (36), wherein the first through-opening (14) feeds into the second through-opening (20).

Description

technical field [0001] The invention relates to a proportional valve for controlling a gaseous medium, in particular hydrogen, which is used, for example, in vehicles with a fuel cell drive. Background technique [0002] DE 10 2012 204 565 A1 describes a proportional valve for controlling a gaseous medium, in particular hydrogen, wherein the proportional valve comprises a nozzle body, a closing element and an elastic sealing element. At least one through-opening is formed in the nozzle body, which can be released or closed at the valve seat by the closing element. In this case, the elastic sealing element seals against the valve seat and has a notch with an inner wall region. In the closed state of the proportional valve, this inner wall region is subjected to the pressure of the gaseous medium. [0003] The special feature of the proportional valves is that when using them only small pressure fluctuations occur in the anode path of the fuel cell and quiet operation is ens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/40F16K1/44F16K31/06
CPCF16K1/443F16K31/0655F16K31/408H01M8/04089Y02E60/50H01M8/04201H01M8/04753
Inventor M·库尔茨
Owner ROBERT BOSCH GMBH
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