Valve cap for gas bottle and gas bottle equipped therewith

The This invention relates to a Druckreduzierventilanordnung for pressurized gas cylinders.

Compressed gas cylinders have traditionally been equipped with a valve, the pressure reducer with a locally available had to be connected, including the provision Disadvantages of an assembly / disassembly process. Also recently in particular for the medical field combined Druckreduzierventilanordnungen proposed directly to at least one Niedruckverbrauchsleitung connectable are. Such arrangements are described in the publications<patcit><text>EP-A-308 875</text></patcit> and <patcit><text>EP-A-629 937</text></patcit>Where by the placement of a pre-set pressure reducer for insulation between provided the high- and low-pressure pipe parts can be, and in the publication <patcit><text>EP-A-275 242</text></patcit> described, in which an insulation at the outlet of is low-pressure pipe portion provided.

task the present invention is to provide a perfected with Druckreduzierventilanordnung propose especially stable and compact design, their integration into a matching trim allows an increased Ergonomics and safety features and suitable for numerous applications is, particularly in the field of welding.

To this end, beats the invention provides a Druckreduzierventilanordnung according to claim 1 in front.

Furthermore, special features of the invention according to: <ul><li>- Includes the arrangement different from the first gas line the second gas line, the in the body is formed, for the filling the bottle when the assembly is mounted on this bottle;</li><li>- Includes the arrangement Means for manual adjustment of the reducer, which is advantageously located along a Axis extending substantially orthogonal to the axis of the assembly approach of the body lies.</li></ul>

article of the present invention is also an arrangement of the above-defined Type, which is arranged in a protective casing, which also on the bottle is attached and a transport cap for the latter forms.

article the present invention is finally a compressed gas cylinder, the equipped with such a device as defined above is.

More Features and advantages of the present invention are off the following description of embodiments shown the illustrative only should be, and by no means limiting and takes place with reference to the following accompanying drawings:

<figref idrefs="S11">1</figref> is a perspective view of the in place in a through shadowy Lines fairing shown located inventive arrangement,

<figref idrefs="S11">2</figref> is a schematic plan view of the arrangement of the clad <figref idrefs="S11">1</figref>.

<figref idrefs="S12">3</figref> is a partial sectional view taken along the Section line III-III of the arrangement of <figref idrefs="S11">2</figref>Which at its Position is attached to a gas cylinder,

<figref idrefs="S13">4</figref> is a plan view, partially in longitudinal section, the arrangement of <figref idrefs="S11">2</figref>.

<figref idrefs="S14">5</figref> is a partially longitudinally the section line VV of <figref idrefs="S11">2</figref> cutaway detail view

<figref idrefs="S14">6</figref> is a partially longitudinally the sectional line VI-VI of <figref idrefs="S11">2</figref> capped Side view and

<figref idrefs="S15">7</figref> is a longitudinal section bisectors a variant a panel for an inventive arrangement.

In the drawings is a compact Druckreduzierventilanordnung to recognize that essentially consists of a metal body <figref>1</figref> is, one of the a mounting boss <figref>2</figref> forming, profiled, lower includes end and where, how to detail will be seen below, an outlet port <figref>3</figref>, A Reduzierergehäuse <figref>4</figref>. an actuating lever <figref>5</figref>, on Filling connection <figref>6</figref>. a high pressure manometer <figref>7</figref> and a low pressure <figref>8th</figref> are added.

As in the <figref idrefs="S12">3</figref> to <figref idrefs="S14">6</figref> better seen, bounded the body produced, for example, made of brass <figref>1</figref> within a Consumption line which consists of a high pressure line section, the comprising: an upstream section <figref>9</figref>, Located in the neck <figref>2</figref> extends, substantially parallel to the axis of the latter, and in a transverse passage <figref>10</figref> opens, the for mounting the manometer HP <figref>7</figref> serves and himself with a Transverse passage <figref>11</figref> communicates, who himself in a stepped bore <figref>12</figref> opens, which the isolation valve <figref>13</figref> receiving and seating <figref>14</figref> for this the latter forms; the conduit section downstream of the seat<figref>14</figref> the stepped drilling <figref>12</figref> stands above a transverse passage <figref>15</figref> having a cylindrical, stepped chamber <figref>16</figref> in connection with the through an opening enlarged diameter the exterior of the body <figref>1</figref> opening onto, in the annular the End of Reduzierergehäuses <figref>4</figref> appropriate is. It is seen that the pressure gauge HP <figref>7</figref>Which in permanent communication with the storage volume is on the bottle B, the function of the level indicator of the bottle perceives. In the portion of the chamber <figref>16</figref> reduced diameter is a one-piece Subassembly mounted that a tubular cage <figref>17</figref> comprises the a regulating valve <figref>18</figref> receiving and seating <figref>19</figref> for this the latter forms. The valve<figref>18</figref> comprises a front shaft section <figref>20</figref>. of over the seat <figref>19</figref> addition, and being capable of having the Front of Reduziererkolbens <figref>21</figref> cooperate, the in the body <figref>1</figref> and the housing <figref>4</figref> slides, where he by a spring <figref>22</figref> in the direction of the cage <figref>17</figref> is urged the rear grip in a plate <figref>23</figref> place and its force by the displacement the dish <figref>23</figref> provided by means of a threaded shank <figref>24</figref> is adjustable in the housing <figref>4</figref> appropriate and manually by a button or a dial <figref>25</figref> operable. The axis of the valve <figref>18</figref> and Reduziererkolbens <figref>21</figref> lies substantially orthogonal to the axis of the assembly approach <figref>2</figref>, The low-pressure chamber <figref>26</figref> on the front of the piston <figref>21</figref> opens against the button <figref>25</figref> of the reducer to the exterior of the body <figref>1</figref> go through an outlet passage <figref>27</figref>. which in the body <figref>1</figref> parallel to the axis of the valve <figref>18</figref> and piston <figref>21</figref> in nearby of the upper end of the body extends and in which the outlet port <figref>3</figref> appropriate is, and by the outlet passage <figref>27</figref> orthogonal and for passage <figref>11</figref> substantially vertical transverse passage <figref>80</figref>. in which the pressure gauge BP <figref>8th</figref> is attached, the so vertically Orientation to gauge HP <figref>7</figref> is arranged.

As one in <figref idrefs="S12">3</figref> seen, the body defining <figref>1</figref> as an Line for filling the bottle, which is completely independent from the manifold described above and a downstream section <figref>28</figref> includes, which in approach <figref>2</figref> extends parallel to the axis of the latter upstream and with a Transverse passage <figref>29</figref> communicating, in the opposite manometers <figref>7</figref> and <figref>8th</figref> and oriented substantially to gauge HP <figref>8th</figref> the filling connection <figref>6</figref> is attached. The connection <figref>6</figref> forms internal passage which is profiled to a downstream filters <figref>30</figref> and in the transition region a check valve <figref>31</figref> take, which is acted upon by a spring, and which at an inlet opening <figref>32</figref> ends the for is designed, for example the male end of a filling line take, said male Part valve <figref>31</figref> pushes back through to the high pressure fill fluid free access the passage <figref>28</figref> to give the interior of the bottle.

As one in <figref idrefs="S14">5</figref> sees, the isolation valve <figref>13</figref>. this by a spring into its seat <figref>14</figref> is pressed, which in a bore <figref>12</figref> occlusive cap <figref>33</figref> to Conditioning comes at its front end a on the seat <figref>14</figref> projecting Finger on the shaft with a <figref>34</figref> it coming to rest cooperates, which crosses a seal kit and an outer end includes, the above the block <figref>1</figref> protrudes to cam face with a <figref>35</figref> of Joint head of the lever <figref>5</figref> cooperate, of around a transverse axis <figref>36</figref> in a projection <figref>37</figref> at the top End of the body <figref>1</figref> essentially between the gauges <figref>7</figref>. <figref>8th</figref> and the outlet port <figref>3</figref> rotates. The head of the lever <figref>5</figref> comprises at least two notches <figref>38A</figref>. <figref>38B</figref>. with a spring tongue <figref>39</figref> cooperate, on the body <figref>1</figref> appropriate is to the lever <figref>5</figref> in the one or the other of its extreme opening or closed positions keep making it practically insensitive to vibrations is. Advantageously, a layer of material having a low Friction coefficient, or even of a self-lubricating material at the interface between the cam surface <figref>35</figref> and the cap of the shaft <figref>34</figref> attached by, for example between this latter a tongue of rigid polyimide at least in the Mounting on the tongue <figref>39</figref> is introduced.

As is shown in the drawings, the inventive arrangement comprises Also advantageously a pressure check valve <figref>40</figref> at an upstream End of the passageway <figref>9</figref> in the neck <figref>2</figref>, A pressure relief valve <figref>41</figref> in the piston of the reducer <figref>21</figref> and a check valve <figref>42</figref> in the outlet passage <figref>27</figref> as a filter upstream of the passage <figref>11</figref> or at the end of the cage <figref>17</figref>,

As is best seen in the drawings, permits compact Construction of Druckreduzierventilanordnung with on the whole the surfaces of the blocks <figref>1</figref> divided active members there, the arrangement completely integrated into a panel that forms a bottle cap C, whose outlines for a specific embodiment in the <figref idrefs="S11">1</figref> and <figref idrefs="S11">2</figref> are shown. At this embodiment, the trim / cover C substantially from a base C₁ formed on the neck of the bottle B around the neck <figref>2</figref> around is attached and on the typically by vertical brackets, an upper bowl-shaped part C₂ secured is accommodating and a pressure reducing valve essentially a handle P forming lateral portion and a knob-shaped top includes head T, which enables the transport of the bottle, in particular through, Roll on the ground. The side walls of the upper part C₂ comprise a be agreed number of cutouts or recesses D₁-D₄. as shown schematically in <figref idrefs="S11">2</figref> is shown to access to the terminals <figref>3</figref> and <figref>6</figref>. the button <figref>25</figref> and the pressure gauges <figref>7</figref> and <figref>8th</figref> to enable. Parts C₁ and C₂ include also a longitudinal slot F, of the free displaceability of the lever <figref>5</figref> in between its opening and closed position allows normally in the open position is added to the panel C, how in <figref idrefs="S11">1</figref> looks. One can at the bottom of the slot F also advantageously Attaching a non-destructible Safety device for instance take the Zertrennungsart, which guarantees that the lever <figref>5</figref> not before the first start of a full, with the invention Druckreduzierventilanordnung actuated equipped bottle has been. At least the upper part C₂ disguise C can be made from an engineering plastics material. At least the lower part of C₁ may consist of a Light alloy or are made of malleable cast iron. As Variant, the trim / cap, as in <figref idrefs="S15">7</figref> schematically is shown, consisting of an inner perforated cage or a bell C '₁, Typically from malleable cast iron, of / around on the neck of the bottle around the neck of the valve is attached and extends upward, so that he / she the Druckreduzierventilanordnung with their gauges surrounds, and from external peripheral and upper cladding elements C '₂. C ''₂ of plastic material existence, on the cage C '₁ are attached.

Although The present invention in relation to certain embodiments, has been described, it is not limited thereby, but on the contrary, are Modifications and variants are possible, the expert seem.