DE10119589C1 - Thermostat valve for central heating radiator has valve element operating pin coupled to operating attachment via fixing element with 2 alternate fixing sections for different operating attachment types - Google Patents

Abstract

The thermostat valve has a housing (11) incorporating a valve seat (12) and a cooperating valve element (13) operated by a pin (15), passing through a stop sleeve (14) and fitted with an operating attachment via a fixing element (18) attached to the valve housing in 2 alternate positions, offset from one another by 180 degrees, for use of 2 alternate fixing sections (23,24).

Description

The invention relates to a valve, in particular a Thermostatic valve for heating systems, with a housing se, a valve seat with which a closing element together menwirkt that through a stuffing box ten pin is actuated, and with a fastening arrangement for an actuating attachment.

The actuating attachment controls the position of the closing element relative to the valve seat and therefore the amount of heating fluid that can flow through a radiator controlled by the valve via the pin. Dement speaking, it is necessary that the actuator set can be attached to the valve via the mounting arrangement. Most valves currently available on the market have fastening geometries as shown in FIGS. 1 and 2. In the shown in FIG. 1, terminal device 1 is a Anlageflä surface 2 is provided, against which the socket of a not shown nä forth operation cap is pressed by a radial force on a surface of the conical clamping is deflected in the axial direction. 3 From the stand A between the contact surface 2 and the free end of the actuation of the closure piece serving pin 4 is about 30 mm. An example of this is illustrated in DE 32 36 372 C2.

In the case of a second form of connecting device 5 , which is shown in FIG. 2, the bearing surface 6 is provided on the end face of a clamping surface 7 designed as a thread. The base of the actuating attachment is pressed against the contact surface 6 by screwing on a union nut provided with an inner flange. The distance B between the contact surface 6 and the free end of the valve pin 4 is approximately 10 mm. An example of this is shown in DE 43 44 773 A1. Further connection devices differ from the connection device 5 in that the distance B is somewhat larger, for example approximately 20 mm.

It is also known (DE 94 11 056 U1) and that same valve for connecting two or more types of egg nes actuating attachment suitable by a Adapter, i.e. an additional component, between the valve and Actuator attachment is used. The heating engineer can therefore be used for repair work with few spare parts len that he must carry with him. He can also Ven tiles and actuating attachments from different manufacturers combine with each other. However, it did shows that with a certain type of use not required additional components or adapters at the time point where they are often not required Be available, be it lost or are used up.

The invention has for its object a valve of the type mentioned at the outset, all means has, optionally, one of at least two under different types of actuator attachments.

This task is ge with a valve named type solved in that the mounting arrangement on a detachably connected to the housing Stigungselement is arranged in two around each other 180 ° opposite alignments with the case is connectable, being in a first orientation first mounting section and in a second off direction a second attachment section from the outside is accessible.

With this configuration it is first achieved that that for connecting an actuating attachment required element, namely the fastener, with a functional valve always in or on the Ven til is present. So basically it can't get lost ren go. If you have the attachment on the valve want to attach, you just have to check whether the correct mounting section accessible from the outside is. If this is not the case, the fastening element ment detached from the housing. The fastener will then turned by 180 ° and connected to the housing again the. In this case, the second attachment is off cut accessible from the outside, so that the actuation Another type of attachment connected to the valve can be. If you look at the direction of action of the pen equates to a valve axis, then this means turning by 180 ° a rotation around an axis that is perpendicular to the valve axis runs. Such a rotation is relatively easy to do and also for one  less skillful fitter without difficulty feasible.

The first fastening section preferably has a greater axial length than the second fasteningab cut open, and protrudes into the second orientation Housing inside. As mentioned above, those are from Ge housing of the valve protruding lengths of the fastening Arrangement arrangement very different from type to type. If you now ensure that the greater length in the Housing can protrude if you attach the second fastener tion section for attaching the actuating attachment want to use, then there is none in this case disruptive elements that one when mounting the actuator would have to take into account. Everything you need not required, disappears in the valve body.

Preferably, a plunger acts on the fastening element through with the pen. You can with With the help of the plunger the different aspect ratios take into account the fastening sections. at for example, when the first attachment section is used, use the plunger. If the second attachment section with the corresponding Shorter length is sufficient in many cases the length of the pin so that the actuation sentence can act directly on the pen.

In a preferred embodiment, however, is provided see that the plunger has at least two engagement positions gene with the pen. This ensures that you work with the plunger in any case, so that with a functional valve always the plunger in front is there. The two engagement positions allow  that the combination of pin and plunger two under form different lengths.

This is preferably realized in that the Pestle in a first orientation in which it is a he most engaging position with the pin, and in a second orientation that is 180 ° to the first off is offset in the direction of a second intervention has position with the pen together with the pen menwirkt. Due to the different intervention positions the different ones can be easily created Combine lengths with pin and pestle.

It is particularly preferred that the plunger is a closed end face at one end and one forehead has side recess at the other end. If the Tappet with the closed end face on the pin acts, then there is a predetermined total length the combination of plunger and pin. If the pestle however, is rotated by 180 ° so that the pin in the front recess at the other end of the plunger intervenes, then this total length by the length re with which the pin protrudes into the plunger.

In an alternative or additional embodiment can be provided that the pen is a changeable Has length. This also allows an adjustment to the different lengths of the two fasteners reach sections.

The length is preferably at least two specific Values is adjustable. It fits the length of the Already targeted to the length of the attachment sections. So the fitter doesn't have to do any experiments do more to find the right length.  

The fastener and are advantageous Connect the housing to each other via a screw connection the. A screw connection can be easily loosened and restore. Nevertheless, such a Screw connection sufficient attachment between the fastener and the housing securely.

The fastening element preferably has two outer surfaces thread axially on both sides of a circumference tion, one of which has an internal thread de interacts in the housing. The enlargement has, among other things, the function of a stop. So the fastener will match that the external thread into the housing screws until the circumference enlargement on the housing sets. This is then a defined position of the fastener guaranteed supply element relative to the housing.

The increase in circumference preferably has one order catch wall, which is provided with an external thread. This external thread can then be used, for example Attachment of an actuating attachment of the second type be used.

The external thread is preferably through a Guard ring covered. This guard ring has two purposes parts. First, it protects the external thread from loading damage during transport. On the other hand, the Guard ring if the external thread is not for the Attachment of an actuating attachment is used, a more pleasing appearance. The guard ring can be used with a be smooth surface, which is essentially calm acts on the eye of a user more than an outside thread.  

The protective ring preferably forms part of one Protective cap and is over a predetermined breaking point with a Protective hood of the protective cap connected. You can do that Then use the protective cap of the protective cap to remove the Unscrew or remove the protective ring. If the guard ring needed later to cover the thread, then the protective cap is simply placed at the predetermined breaking point the protective ring pressed in and from the protective ring separates.

In another embodiment, it can be provided that a threaded projection is arranged in the housing with which the fastener is screwed. In this In this case, it is not necessary to edit the housing The processing is rather limited to the Thread protrusion that are inserted into the housing can. In some configurations, this facilitates Production.

It is preferred that the thread projection is an Au external thread and the fastening element an internal thread having. Such a configuration is special then an advantage if during transportation of the Ven tils or a radiator equipped with the valve there is a risk of damage to the thread and one must expect that the fastener in reverse direction in the valve got to. If, on the other hand, only one In thread is provided, then there is a risk of Damage is generally much less. About that you can also have a continuous thread in the fastener Use the supply element, d. H. a thread that for de installation directions can be used equally can.  

In a further alternative is the fastening element ment with the help of a threaded insert with the housing connected. Such a thread insert is a additional part. By using this additional However, part of it is the construction of the rest Parts, i.e. the fastening element and the housing, a little easier.

Preferably, the fastener and the Ge housing an anti-twist device. You create on this Way a defined angular position of the housing and Fastener relative to each other, so that the Actuator attachment corresponding to the angle on the radiator can position by.

The invention is based on preferred in the following Embodiments in connection with a drawing described. Show here:

Fig. 1 a mounting portion for a first type of operating element according to the prior art,

Fig. 2 an attachment portion for a second type of mounting attachment according to the prior art,

Fig. 3 shows a first embodiment of a valve with two different geometries terminal,

Fig. 4 shows a second embodiment of a valve,

Fig. 5 shows a third embodiment of a valve and

Fig. 6 shows a fourth embodiment of a valve.

Fig. 3a shows a valve having a housing 11 in which a valve seat 12 is arranged. With the valve seat 12, a closure member cooperates 13 which by a through a stuffing box 14 (or other sealing packing) guided pin 15 is actuated. The closing element 13 is held by a spring 16 in the opening position. The pin 15 is located within a guide tube 17 .

Fig. 3a shows an embodiment of the valve on which an actuating attachment (not shown in more detail) can be attached, which fits a fastening arrangement according to FIG. 1. Fig. 3b shows the same valve with a mounting geometry that speaks ent of Fig. 2.

Screwed into the housing 11 is a fastening element 18 . For this purpose, the housing 11 has an internal thread 19 . This internal thread 19 is in engagement with a first external thread 20 of the fastening element 18 , which tion 21 is arranged on an axial side of a circumferential enlargement. On the other axial side of the circumferential enlargement 21 there is a further external thread 22 , which is then screwed into the internal thread 19 of the housing when, as is shown in FIG. 3b, the fastening element 18 is screwed into the housing 11 in the opposite direction ,

The fastening element 18 is substantially shorter on the side of the first external thread 20 than on the side of the second external thread 22 . The thus formed he ste fastening section 23 has the cone surface 13 known from FIG. 1, on which the actuating assembly can be clamped.

The thread 7 , which is known from FIG. 2, accordingly forms a second fastening section 24 with a step formed by a thickening 28 .

The pin 15 is shorter than the guide tube 17 . The guide tube 17 is shorter than the first fastening section 23 of the fastening element 18th So that an actuating attachment can later act on the pin 15 , a plunger 25 is provided which has a closed end face 26 at one end and an end recess 27 at the other end. The recess 27 is dimensioned so that the pin 15 fits in, as can be seen from Fig. 3b.

The guide tube 17 has at its end protruding from the housing 11 a thickening 28 , which has two functions. In the alignment shown in Fig. 3a direction of the fastener 18 , it supports the Füh approximately tube 17 inside the fastener 18 . If the fastening element is rotated by 180 ° 18, then projects the thickening 28 slightly out of the fastening selement out 18 and then forms one of the stages, which can be seen in Fig. 2 and form the parts of the second fixing portion 24 Be.

In the housing is a packing gland 14 surrounding Rin Graum 29 is provided, into which a tubular extension 30 of the loading attachment member 18 protrudes, when the fastening selement 18, as shown in Fig. 3b rotates 180 ° ge and has been screwed into the housing 11 ,

The changeover from one fastening geometry ( FIG. 3a) to the other ( FIG. 3b) is carried out simply by unscrewing the fastening element 18 from the housing 11 . At the same time, the plunger 25 is lifted off the pin 15 . The fastening element 18 is then rotated or turned through 180 ° and screwed into the housing 11 with the other external thread 22 . The plunger 25 is also rotated by 180 ° and inserted into the guide tube 17 in such a way that the Ausneh tion 27 receives the pin 15 . In this position, an actuating attachment can then be screwed onto the external thread 7 .

In both Einschraublagen the circumferential enlargement 21, serves as a stop so that a defined position of the fastening element 18 relative to the housing 11 is ensured ge when the fastener has been screwed up to the stop 18 in the housing. 11

In a manner not shown, a twist protection for the actuating attachment is provided in both fastening positions of the fastening element. This can be arranged either on the fastening element or on the housing 11 .

From Fig. 3a, a protective cap 31 is to be recognized NEN, which consists of a protective ring 32 and a protective cover 33 . Protective ring 32 and protective hood 33 are connected to one another via a predetermined breaking point 34 . The protective cap 31 has several functions. If an actuating attachment is not yet attached and the valve has the fastening geometry shown in FIG. 3 a, the protective cap 31 serves to hold the plunger 25 in place and to protect the external threads 7 and 22 from damage. When the valve is to be used with the in Fig. Orientation of the Fixed To restriction member 18 shown 3a, then guard ring 32 and guard 33 are at the predetermined breaking point 34, separated from each other, for example by reacting coming from the top of the cap 31 when the cap 31 is unscrewed. You can then use the protective ring 32 as an optical covering of the external thread of the 7 , which in many cases causes a more pleasant appearance. The external thread 7 is not necessary in the alignment of the fastening element 18 according to FIG. 3a.

Fig. 4 shows a modified embodiment in which the same parts are provided with the same reference numerals. The main difference is that a plunger is unnecessary because the pin 15 is split into two and is designed to have a variable length.

As can be seen in Fig. 4a, the pin 15 consists of a lower part 15 a, which cooperates with the closing element 13 , and an upper part 15 b, which protrudes from the fastening element 18 . So that the changeable length can be realized, the lower part 15 a has a recess 15 c, which has a rectangular cross-section. The upper part 15 b has at its lower end a thickening 15 d, which is shown in Fig. 4a angular position of the upper part 15 b to the lower part 15 a so that the upper end of the lower part 15 a and the lower Butt end of the upper part 15 b.

In Fig. 4b, in which the fastener has been screwed 18 in a rotated position of 180 ° in the housing 11, a correspondingly shorter length of the pin 15 is required. Accordingly, the upper part 15 b of the pin by 90 ° about its longitudinal axis 15 e rotates ge, so that the upper part 15 b of the pin protrudes into the lower part 15 a un. The total length of the pin is thus shortened by the length of the recess 15 c.

An intermediate position is shown in FIG. 4c. The recess 15 c extends in its upper half to an extension 15 f in which the thickening 15 d on the upper part 15 b of the pin can engage. In order to lock the lower part 15 a and the upper part 15 b in this position with one another, the upper part 15 b is first rotated relative to the lower part 15 a, as is the case in FIG. 4b, ie the rectangular one Thickening 15 d is then perpendicular to the plane of the drawing with its longitudinal extent. In this orientation, the thickening 15 d can be inserted into the recess 15 c. As soon as the thickening 15 d has reached the extension 15 f, the upper part 15 b is turned back again by 90 °, so that the upper part 15 b is fixed in the lower part 15 a.

Fig. 5 shows a further embodiment in which the same surface and functionally identical parts are provided with the same reference characters.

In the housing 11 , a threaded projection 35 is arranged, for example screwed into an internal thread 36 in the housing. The threaded projection 35 has at its obe ren end an external thread 37 onto which a corre sponding internal thread 38 of the fastening element 18 is screwed.

In the orientation of the fastening element 18 shown in FIG. 5a, the tubular extension 30 is accommodated in the housing 11 and the threaded projection 35 practically ends with the outer end of the fastening element 18 . The external thread 7 is arranged on the outside of the housing 11 . The fastening element 18 has two steps 39 , 40 , which together with the external thread 7 form the second fastening section 24 . The distance B of the tip of the plunger 25 from the contact surface 6 corresponds to the distance B from FIG. 2nd

Is shown in the alignment of the fastening element 18 as shown in Fig. 5b, the external thread 37 is screwed the threaded projection 35 also in the internal thread 38 of the fastener 18. The fastening supply element 18 is now screwed so far onto the threaded projection 35 that it comes with its end face to the position on the clamping surface 2 (corresponding to FIG. 1). In this way, a distance A is formed between the clamping surface 2 and the tip of the plunger 25 , which corresponds to the position A in FIG .

If the fastening element 18 has been screwed into the housing 11 in the reverse alignment, then the end face of the step 39 facing the housing 11 forms the corresponding stop surface.

In the embodiment of FIG. 5, the plunger can be used on both sides. In the compilation according to FIG. 5a, the plunger is slipped onto the pin 15 with its recess 27 . In the compilation according to FIG. 5b, the plunger 25 stands with its end face 26 on the pin 15 .

Fig. 6 shows a further embodiment, partly in disassembled state.

The orientation of the fastening element 18 is indicated here by an arrow 41 which points upwards in FIG. 6a and downwards in FIG. 6b.

The fastening element 18 is fastened in the housing 11 with the aid of a threaded insert 42 , which can be screwed out of the housing 11 with the aid of a schematically illustrated tool 43 . The threaded de insert 42 has an internal thread 44 which is screwed onto an external thread 45 which is arranged somewhat above the gland 14 . The threaded insert 42 has a step 46 which acts on a radially inwardly projecting flange 47 in a through opening 48 of the fastening element 18 .

A pin 49 is inserted into the housing 11 , which protrudes into a recess 50 on the fastening element 18 . The pin 49 and the recess 50 together form a twist protection.

The conversion from the construction shown in FIG. 6a to the construction shown in FIG. 6b proceeds as follows:

First, the plunger 25 is pulled out of the threaded insert 42 and thus out of the fastening element 18 . Thereafter, the threaded insert 42 is unscrewed using the tool 43 and the fastening element 18 can be lifted off the housing 11 . The fastening element is now rotated by 180 °, so that the arrow 41 points downward, and inserted into the housing 11 . The section of the fastening element 18 on which the external thread 7 is arranged has a larger diameter than the housing 11 , so that this section can be used as a stop in both installation positions. The recess 50 comes into engagement with the pin 49 . The tubular extension 30 of the fastening element 18 can enter the annular space 29 . The threaded insert 42 is then screwed back into the housing 11 . With its step 46 , which acts on the flange 47 , it holds the fastening element 18 in the housing 11 .

As can be seen from Fig. 6c, when the fastener 18 is removed, egg ner scale plate 52 , which acts on the driver 53 , still make a presetting of the flow rate, the pin 49 as a mark for the scale plate 52nd can be used.

Claims (17)

1. valve, in particular a thermostatic valve for heating systems, with a housing ( 11 ), a valve seat ( 12 ) with which a closing element ( 13 ) interacts, which can be actuated via a pin ( 15 ) guided through a stuffing box ( 14 ), and is arranged with a mounting arrangement for an actuator cap, characterized in that the Befestigungsanord voltage at one to the housing (11) releasably composites NEN fastening element (18) which is connectable in two 180 ° opposed orientations to said housing (11), wherein in a first orientation, a first fastening section ( 23 ) and in a second orientation, a second fastening section ( 24 ) is accessible from the outside. 2. Valve according to claim 1, characterized in that the first fastening section ( 23 ) has a greater axial length than the second fastening section ( 24 ) and protrudes into the housing ( 11 ) in the second orientation. 3. Valve according to claim 1 or 2, characterized in that a plunger ( 25 ) which extends through the Befestigungsele element ( 18 ) cooperates with the pin ( 15 ). 4. Valve according to claim 3, characterized in that the plunger ( 25 ) has at least two engagement positions with the pin ( 15 ). 5. Valve according to claim 3 or 4, characterized in that the plunger ( 25 ) in a first alignment direction, in which it has a first engagement position with the pin ( 15 ), and in a second direction, by 180 ° ver is set to the first orientation, in which it has a second engagement position with the pin ( 15 ), cooperates with the pin ( 15 ). 6. Valve according to claim 5, characterized in that the plunger ( 25 ) has a closed end face ( 26 ) at one end and an end recess ( 27 ) at the other end. 7. Valve according to one of claims 1 to 6, characterized in that the pin ( 15 ) has a changeable length. 8. Valve according to claim 7, characterized in that the length to at least two concrete values is adjustable. 9. Valve according to one of claims 1 to 8, characterized in that the fastening element ( 18 ) and the housing ( 11 ) are connected to one another via a screw connection. 10. Valve according to claim 9, characterized in that the fastening element ( 18 ) has two external threads ( 20 , 22 ) axially on both sides of a circumference enlargement ( 21 ), one of which each with egg nem internal thread ( 19 ) in the housing ( 11th ) works together. 11. Valve according to claim 10, characterized in that the circumferential enlargement ( 21 ) has a circumferential wall which is provided with an external thread ( 7 ). 12. Valve according to claim 11, characterized in that the external thread ( 7 ) is covered by a protective ring ( 32 ). 13. Valve according to claim 12, characterized in that the protective ring ( 32 ) forms part of a protective cap pe ( 31 ) and is connected via a predetermined breaking point ( 34 ) to a protective hood ( 33 ) of the protective cap ( 31 ). 14. Valve according to claim 9, characterized in that a threaded projection ( 35 ) is arranged in the housing ( 11 ) with which the fastening element ( 18 ) is screwed ver. 15. Valve according to claim 14, characterized in that the threaded projection ( 35 ) has an external thread ( 37 ) and the fastening element ( 18 ) has an internal thread ( 38 ). 16. Valve according to claim 9, characterized in that the fastening element ( 18 ) with the aid of a threaded de insert ( 42 ) is connected to the housing ( 11 ). 17. Valve according to claim 16, characterized in that the fastening element ( 18 ) and the housing ( 11 ) have an anti-rotation device ( 49 , 50 ).