DE9421935U1 - Connection device for connecting a radiator and cartridge for installation in it - Google Patents

Description

The invention relates to a connection fitting for connecting a radiator to the heating pipe system of a heating system operated with a heating fluid, according to the preamble of claim 1, and also comprises a cartridge according to the invention for installation in this connection fitting, as described in claim 15.

The housings of such known connection fittings are usually made of non-ferrous metal and are reworked, whereby the rework of their three or four connection pieces is limited to cutting an external thread and a straight end face; however, since such a connection fitting also contains actuators for shutting off, controlling, throttling and/or diverting the heating fluid, usually warm water, in other words for influencing this heating fluid,

VII/Mu/yes

'S? Fax: Telex: VAT: (089) 4 70 7064 (089) 47071 20 524 560 DE 130746066 (089 4 70 5009 (0 89) 4 70 64 17 Swan d

Bayer. Vereinsbank Munich 453100 (bank code 700 202 70) Hypo-Bank Munich 4410122850 (bank code 70020001) Postgiroamt Munich 653 43-808 (bank code 700 100 80)

For these actuators, not only precise mounting holes have to be made in the housing, which cut into at least one of the flow channels connecting the connection pieces, but internal threads and high-precision valve seats have to be machined into the inside of these holes, which requires several production runs due to the required accuracy and surface quality.

Since the individual holders and seats are aligned differently, the workpiece often has to be re-clamped. Due to the irregular, asymmetrical shape of the workpiece, the use of conventional machines, such as turret lathes, is not possible.

Furthermore, due to the high surface quality required, for example of the valve seat, the workpiece must be carefully cleaned at least before the final machining so that chips remaining from the pre-machining do not get between the tool and the workpiece surface and thereby damage it. Such cleaning is also necessary after the final machining so that chips are not flushed between the valve body and the valve seat and cause sealing problems there.

Given the many channels in the housing, such cleaning is quite time-consuming each time.

In addition, for the different heating systems (one or two-pipe system) and local installation cases (position on the radiator) of such a valve, a different connection set with a different housing is required each time, which means a high manufacturing and storage cost; in addition, an assembly team must always have a redundant number of the different

Carry connection fittings with you to avoid a technician having to drive back to the workshop because of a missing or incorrect valve.

In view of this problem, the invention has the task of further developing the known connection fitting mentioned at the beginning in such a way that it can be manufactured more easily while maintaining or even improving the quality achieved so far, and furthermore one and the same housing can be used for different actuators or arrangements of actuators and thus the storage costs can be reduced, so that overall the costs associated with the connection fitting are reduced in every respect, but the quality can be maintained or even increased.

Quality here refers in particular to the surface quality of the sealing seats and the cleanliness of the finished valve, i.e. characteristics that have a direct impact on the service life and functional reliability of the valve.

This object is achieved according to the invention by the features of claim 1.

In this case, a receiving hole is provided in the housing in such a way that it intersects at least the flow channel or those flow channels whose flow is to be influenced by the adjusting device or devices, hereinafter referred to as adjusting devices. This receiving opening or hole is preferably arranged in such a way that all channels in the housing open into it, e.g. in a housing with three or four parallel

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Nozzles and thus four channels across and preferably at right angles to them.

In this receiving opening or bore there is a functional device or cartridge which has openings which are aligned with at least those channel openings in the receiving opening or bore, i.e. are aligned with them to such an extent that the flow through them is to be influenced.

All of the above-mentioned control devices or elements are housed within this functional device, hereinafter referred to as the cartridge, or form it and are connected to the openings and thus to the aforementioned flow channels.

The parts of the cartridge or the elements built into them each form simple components that can be manufactured inexpensively, quickly and in any quantity using standard automatic machine tools from a semi-finished product such as pipe or rod material. Such components can also be manufactured using casting processes or non-cutting forming processes if necessary.

In addition to the usual and problem-free machining of the ends of the nozzles, the housing only requires the mounting hole, which is largely pre-cast and, if necessary, only needs to be drilled or reamed to size. The casting of the mounting opening or hole is relatively simple because the mounting hole must have a relatively large diameter in order to be able to accommodate the cartridge containing all the organs. Such a large diameter is not a problem because this mounting hole forms the only cross hole and thus covers the entire

can take up the available space. However, such a channel or such a hole can be cast much more precisely, especially in sand casting, than the smaller diameter holes from the state of the art. In permanent mold casting, the cast surface quality may be sufficient so that no further processing is required.

The housing and sleeve remain standard parts, while the type and structure of the elements arranged in the cartridge change depending on the intended installation purpose; for example, a bypass channel is provided in addition to at least one actuator if the connection fitting is to be used in a single-pipe heating system; the

Bypass channel is missing if the connection fitting is to be used in a two-pipe heating system.

Furthermore, the cartridge may contain a manual adjustment valve or an automatic or thermostatic control valve, an additional shut-off valve that allows the radiator to be removed without draining the heating fluid of the heating system, an adjustable or fixed bypass throttle body, etc.

In each of the above cases, the external dimensions of the cartridge may remain the same, only the actuators are different.

Preferably, the cartridge has a sleeve in which all actuators and connecting lines are housed and which has openings that are aligned with the inlets of at least one of the flow channels in the housing.

This sleeve protects the actuators and makes it easier to insert them into the mounting hole.

The sleeve may be made of metal and secured in the receiving bore in the ways explained below.

However, a sleeve made of a material, in particular plastic, which is somewhat flexible, so that it compensates for small dimensional and surface inaccuracies in the receiving bore and forms a seal against its wall, is currently preferred. The sleeve, which has a defined oversize, can be pressed in using an adapted clamp at the installation location of the connection fitting, with the finished cartridge containing the sleeve preferably being pressed in.

It is fundamentally possible to equip the cartridge with thermostatically and/or otherwise controlled, preferably pressure-controlled, actuators; according to a preferred embodiment

However, the invention provides manually operable operating elements which are arranged at that end of the sleeve which is accessible from the open end of the receiving bore or which protrudes from it.

The operating elements can, if several are provided, be designed as slides lying next to one another, but are preferably designed as concentric rotary handles, as is known from radio devices, or are at least arranged concentrically, with the radially inner operating element either projecting over the radially outer operating element or being accessible through the middle of the latter.

The receiving bore does not need to have a round cross-section, but this is preferred for the sake of easier production. The receiving bore can also be conical, which has the advantage that the sleeve, which is also conical, can easily be brought into a tight press fit in this bore, and can be held in place by means of a union nut, for example.

Preferably, however, the receiving bore is circularly cylindrical, as this makes it easy to ensure that the openings in the sleeve are aligned with the openings of the channels in the housing.

The cylindrical receiving bore is designed either as a blind bore or preferably as a through bore; while the bottom of a blind bore can serve as a stop for the sleeve, the through bore has the advantage that the sleeve can be inserted from both ends, so that the operating elements carried on the sleeve point either to the right or to the left when the connection fitting is attached to the right or left of the radiator. This makes the connection fitting according to the invention even more versatile.

- 6a -

A particularly advantageous design is obtained for connection devices with only one controllable flow passage for a fluid, in particular for a heat transfer medium, if the actuating device or devices or elements can be actuated via at least one spring device, preferably a conical spiral spring or the like. It is particularly advantageous for the actuation of the actuating elements if forces can be applied to the spring device both in the axial direction and in the circumferential direction of the actuating elements. If a force is exerted on the spring device by an electrical or electromagnetic drive device or by an operator or the like, it is possible to exert a force in the axial direction of the actuating elements as well as in the circumferential direction of the actuating elements at the same time, so that the actuating element or elements can be rotated and can be pulled out of the housing or sleeve in the axial direction, for example. If the spring device relaxes, the actuator(s) can snap back or move back in the axial direction to assume a predetermined position, whereby the fluid passage can be opened or closed in the case of a connection device with only one fluid passage or, in the case of a connection device with two or more fluid passages, one, two or a selection of several fluid passages can be closed and/or two or a selection of fluid passages can be connected to one another via bypass lines.

It is also very advantageous if the housing and/or the sleeve in which the functional device or the actuator(s) in the connection device are inserted are equally or differently conical.

- 6b -

run. This measure makes it possible for sealing devices, which are attached to the actuator(s), to be pulled off the sealing surfaces on the housing or on the inner circumference of the sleeve during any adjustment process by the axial force of the spring device and by the conical expansion of the inner circumference of the sleeve, and then a new adjustment of the actuator(s) can be made by rotation without any adverse effects on the seals occurring. Once the adjustment process is complete, the actuator(s) can snap back into their starting or resting position in the housing or sleeve and the seals are pressed back onto the sealing surfaces intended for them. As already indicated, this has the advantage that, on the one hand, the sealing surfaces, regardless of whether they are in operation or not, are in contact with the inner circumference of the sleeve or housing and are thus protected from contamination and the like, and, on the other hand, the sealing surfaces are not subjected to any abrasion during switching due to the specific switching processes carried out via the spring device.

It is particularly advantageous if the actuating device or actuating elements can be actuated by means of an operating element that is axially parallel to the functional device or cartridge and is preferably reversibly adjustable, which acts directly and/or via the at least one spring device on the actuating device or actuating elements. The said force can be exerted on the spring by the operating element, which leads to the spring exerting a force on the actuating element or elements in both the axial and the circumferential direction of the actuating elements. For example, by simply pressing on a pressure

- 6c -

or actuating button the spring is put into operation in order to operate the actuator(s).

Such an operation is of course also possible without the spring, although in this case increased demands are placed on an operator or a drive device.

Another extremely advantageous embodiment is obtained if at least one control device, preferably a control track or control gate or the like, is provided, with which at least one predeterminable position of the actuator(s) can be reversibly adjusted. In other words, structures are made on the actuators and/or the sleeve accommodating the actuator(s), by means of which the actuator(s) can be guided.

It is particularly advantageous if the movement of the actuator(s) within the control or guide devices can be carried out by means of the operating element or the spring device(s). If the operating element is actuated, for example if a pressure force is exerted on it, the spring device is actuated in such a way that it guides the actuator(s) within the control devices or control tracks or control gates in such a way that the positions predeterminable by these can be assumed in a controlled manner.

Furthermore, particular advantages arise if an additional control device or control gate or the like is provided, by means of which the forces of the spring device acting in the axial direction can be controlled.

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It has been found that a combination of a lifting link in conjunction with a control cam for rotary movements with locking positions in conjunction with a spring device, particularly in the form of a conical spiral spring, brings very special advantages with regard to the precision of the guide and the protection of the seals. If a force is exerted on the spring device in this combination, the lifting link initially prevents rotation of the actuator(s) and the forces applied by the spring device force the actuator(s) to lift axially out of the housing or sleeve, whereby the seals lift off the sealing surfaces of the housing or sleeve in the area of the fluid passages. As soon as the actuator(s) are raised far enough that the seals are protected during a rotation process, the guide path of the lifting link ends and the rotating link or rotating track can come into action, since the circumferential force of the spring device is no longer hindered by the forced guidance of the lifting link. The actuator(s) can perform a rotation, the spring device allows its circumferential forces to act on the actuator(s), rotates them and the actuator(s) quickly return to an axial rest position in which the actuator(s) are held in a position specified by the rotating link and the seals are pressed at specified points.

During this switching process, the guide pins, which ensure the movement in the axial direction, can switch from one lifting link to another, whereby a connecting path must be available between the adjacent lifting links. This makes it possible for the actuating element to be simply pressed or lifted via the

- 6e -

By means of the spring device, the actuator(s) can be rotated in one direction and then in the opposite direction.

A guide or stop device can also be provided either on the actuator or actuators or on the inside of the housing or sleeve in order to interact with the control device or control track or control gate in order to ensure, together with the latter, the controlled movement of the actuator or actuators into the specified positions.

When fastening the sleeve in the receiving bore, it must be ensured that its outer wall seals against the inner wall of the receiving bore to such an extent that the heating fluid cannot escape and a short circuit between the individual flow channels is prevented.

In addition to the preferred solution described above of a limitedly flexible sleeve, preferably made of plastic or a metal sleeve coated with plastic, this can be achieved, for example, by means of a reamed receiving bore, with the peripheral wall of which seals engage axially and radially, which are attached to the outside of the sleeve and sit in recessed grooves. The sleeve is in turn held in position by means of a union nut. This design has the advantage that the sleeve is only inserted by the fitter when the valve is installed and can be easily removed for repair purposes using a tool similar to a bearing puller; the fitter only needs to carry a limited number of uniform housings, into which a pre-assembled sleeve can possibly only be inserted after it has been installed.

It is particularly advantageous if net-like or mesh-like seals are provided on the outer peripheral surfaces of the sleeve or shut-off valve body and/or the surfaces opposite these surfaces in the assembled state. It is essential that adjacent sealing elements of a sealing net form separate, for example checkered or diamond-shaped chambers, which then, when arranged in a plurality, produce a very good sealing effect without having to rely on the sealing effect of a single O-ring. Inaccuracies in the fit, which must lead to leaks with an O-ring seal, can be absorbed by the net-like seal mentioned above.

-8th-

However, it is also possible to attach the sleeve itself firmly to the housing and subsequently insert the corresponding actuators.

In this case, it is possible and in some cases advantageous to provide the receiving bore with an internal thread over its entire length and the sleeve with an external thread; the threaded connection is sealed using conventional means; however, the sleeve is preferably pressed or shrunk in so that it is pressed against the inner wall of the receiving bore by a press fit over its entire outer surface and is thus held in place.

According to another embodiment of the invention, it may also be advantageous to glue the sleeve into the receiving bore, which has the advantage that when using an appropriate gap-filling adhesive, the receiving bore can already be used in the cast raw form or at least after drilling out without additional reaming.

The sleeve can be glued in both during manufacture and during installation of the valve. The glued joint can be loosened by heating if necessary.

As already mentioned above, it is sometimes useful to install the sleeve alone in the housing and then to mount the actuators in it either during manufacture or when installing the valve; according to a preferred embodiment of the invention, the pre-assembled sleeve is preferred, so that either the manufacturer or the fitter inserts a cartridge into the receiving bore when installing the valve, which already contains all the actuators pre-assembled in addition to the sleeve. This eliminates assembly errors when installing the valve and makes the work of the fitter easier.

* ft

If a connection fitting becomes defective after a long period of use, it is not necessary to locate the fault, but simply replace the entire cartridge, whereby at most the mounting hole needs to be cleaned or rubbed by hand. In such a case, it is also practical to replace all cartridges in an entire, already aging heating system, so that a complete overhaul of such a system can be carried out quickly and inexpensively.

The invention is best used with a connection fitting with an essentially H-shaped housing, with two nozzles each for connection to the pipes and to the radiator, since in such a housing the crossbar of the H can be enlarged without affecting the nozzles so that it can accommodate the cartridge according to the invention. A construction that is too cramped and therefore difficult is thus avoided.

The structure of the cartridge and the control elements mounted in it are now described using an H-shaped valve housing; However, it is expressly pointed out that such a cartridge and such control elements can also be used with differently designed housings, e.g. with connection supports angled to the rear and thus towards the wall for connection to the heating system.

The cartridge of the preferred embodiment is designed as a hollow cylinder that is non-rotatably and axially fixed into the receiving bore, which is preferably closed at one end and is penetrated by two radial bores, the size and arrangement of which are determined in such a way that they allow an unhindered connection of the channel openings with the interior of the hollow cylinder. The closed end enables installation in a receiving bore that is open on both sides or lies close to the bottom of a blind bore, so that no pressure can arise under the closed end that would tend to push the cartridge out of the receiving bore.

-10-

The hollow cylinder can be designed as a machine-turned part, as a deep-drawn part, as an injection-molded part or as a deep-drawn, cast or injection-molded part, where only the quality of the inner bore is important, in which a rotatable but axially fixed shut-off valve body is located, which in turn has two transverse bores that are dimensioned and arranged in such a way that opposite channels of the housing can communicate with each other unhindered, depending on the rotational position of the shut-off valve body, or are separated from each other. The diameter of the shut-off valve body and thus of the receiving bore is therefore determined by the diameter of the transverse bores, which may only extend over less than 90° of the circumference of the shut-off valve body, and thus by the diameter of the channels.

A handle such as a slot for engaging a tool or an operating element can be attached or formed on the end section of the shut-off valve body facing the open end of the sleeve or emerging from it, which sits outside the housing and can be easily rotated by the user of the radiator.

The shut-off valve body can have a smaller diameter than the inside width of the sleeve and be provided with ring seals, but preferably sits in the sleeve with a tight clearance fit and is locked into place with it, for example by a shoulder that engages or is locked into an inner ring groove of the sleeve by springy or permanent deformation of the sleeve; locking with the help of a spring ring is also useful. Since the sleeve is preferably made of a flexible material such as plastic, it can easily run over the shoulder of the shut-off valve body when it is inserted.

Such an arrangement is intended for a two-pipe heating system.

-&Tgr;&Igr;-

If the connection fitting is to be used for a one-pipe heating system, the two transverse holes are connected to each other by a longitudinal hole and a further radial bypass hole offset by 90° to these is connected to the outer circumference, so that when the shut-off valve body is in the closed position, the bypass holes are aligned with the channel inlets for inlet and outlet and, together with the longitudinal hole, connect them via a bypass. When the connection fitting is open, a secondary flow of the heating fluid flows through the radiator, while a main flow flows through the longitudinal hole.

A valve seat is preferably formed in the longitudinal bore between the transverse bores (and bypass bores), which can be more or less closed off by a throttle valve body. This has an external thread that engages an internal thread in the longitudinal bore, whereby the throttle valve body can be rotated but remains essentially fixed axially. The rotation is preferably carried out using a tool such as a screwdriver.

The internal thread is advantageously located outside the area between the two transverse bores, but in a preferred design it is nevertheless located between them in order to shorten the overall length of the built-in cartridge. So that the threaded part of the throttle valve body does not block the flow in the longitudinal bore, it is bridged by at least one longitudinal groove or bore in the throttle valve body.

Advantageously, the connection fitting according to the invention or the cartridge according to the invention can be equipped with passages or bores of different internal diameters in order to generate a dynamic pressure within the connection fitting according to the invention. If constrictions or widenings are arranged within the passageway of the heating medium, pressure differences form in front of and behind these constrictions or widenings, which lead to

- 12 -

regulation. For this purpose, the radial bores and/or the transverse bores and/or the bypass bores can have different diameters in order to generate the pressure differences or back pressures mentioned. Of course, narrowings or widenings for the flow of the heating medium can also be provided at various points on the connection fitting or cartridge according to the invention.

The resulting pressure differences can be used to control the flow rate of the heating medium using a measuring or control device. Diaphragm control valves are particularly advantageous here, with the pressure difference acting on a diaphragm, influencing it and directly leading to the control of the flow rate of the heating medium.

The invention relates not only to the entire connection fitting, but expressly also to a cartridge for installation in a connection fitting, the housing of which has a suitable transverse bore.

The subject matter of the invention is explained in more detail using the attached schematic drawing of preferred embodiments. Further advantages and features according to the invention are disclosed. This shows:

Fig. 1 shows a longitudinal section through a valve housing according to the invention,

Fig. 2 shows a longitudinal section through a cartridge according to the invention,

Fig. 3 is a longitudinal section as in Fig. 1, but with the cartridge of Fig. 2 installed, and

Fig. 4 a longitudinal section through a valve housing according to the invention, with automatic self-positioning.

-13-

Fig. 1 shows a longitudinal section of a housing 10, which is preferably designed as a non-ferrous metal cast or forged part, with an essentially cylindrical central part, which is penetrated by a cylindrical receiving bore 20 over almost its entire length. The open end of the receiving bore 20 is designated by the reference numeral 22.

Radially to the receiving bore, opposing studs are arranged in pairs, each of which has a thread on its free outer end.

Four channels are thus formed inside the nozzles, namely a hot water supply channel 12 leading from a heating pipe system, a radiator supply channel 16, a radiator discharge channel 18 and a discharge channel 14 leading to the pipe system.

All channels run parallel and open into the receiving bore 20 ; two channels 12, 16 or 14, 18 are coaxial with each other.

A cartridge is inserted through the open end 22 into the receiving bore 20 and secured therein; this cartridge is shown in longitudinal section in Fig. 2.

This cartridge has a cylindrical sleeve 24, one end of which is closed by a base 26 formed integrally with the peripheral wall and which is made of a flexible material. On the other hand, it is also possible to install the shut-off valve
valve body can be inserted directly into the receiving bore 20 without an additional sleeve 24 if the respective parts are manufactured with sufficient accuracy.

The peripheral wall is penetrated by two radial bores 30 that are parallel to one another; if the sleeve is installed in the receiving bore 20 of the valve housing 10 in a non-rotatable and axially immovable manner (Fig. 1), then the openings left by the radial bores 30 in the peripheral wall are aligned with the openings of the channels 12, 14, 16 and 18 in the receiving bore 20. All channels and their openings preferably have the same inner diameter.

Advantageously, the through-pipes or bores 30, 32, 36 can have different inner diameters in order to generate a differential pressure within the connection fitting, which can be used to regulate the flow of the heating medium.

A diaphragm control valve is particularly suitable here, in which a diaphragm is deflected due to the pressure difference generated by the different inner diameters, whereby the deflection of the diaphragm can be used directly to regulate the flow.

Of course, other measuring devices can also be used here to carry out a measurement or control based on the pressure difference. However, these would generally be more complex than if a control membrane that meets the requirements were used in the connection fitting or cartridge according to the invention.

Inside the sleeve 24 there is a shut-off valve body 28 which can be rotated with a tight clearance fit and which - if necessary with the aid of a suitable valve grease - is in sealing engagement with the entire inner surface of the sleeve 24, including that of the base 26.

The sleeve has two transverse bores 32, which in a corresponding rotational position of the shut-off valve body 28, the radial bores

30 formed wall openings. The transverse bore 32 connecting the channel 18 with the channel 14 preferably has the same diameter as the associated radial bore 30, while the transverse bore 32 connecting the channels 12 and 16 has a larger diameter than the associated radial bore 30.

Furthermore, two bypass bores 36 are provided, which are perpendicular to the transverse bores 32 and radial to the shut-off valve body 28 and preferably have the same diameter as the channels 12, 14, 16, 18. The center axes of a bypass bore 36 and the associated transverse bore 32 each lie in a common plane radial to the center axis of the shut-off valve body 20 and thus of the receiving bores 20.

The shut-off valve body 38 is penetrated by an axial longitudinal bore 34 which, starting from the end section of the shut-off valve 28 located at the open end 22, has a first bore section with a large diameter which crosses the transverse bore connecting the channels 12 and 16, then a second bore section with an internal thread 46 whose largest diameter (bolt diameter) corresponds to that of the first section, then a conically tapered seat 38 and finally a bypass section whose diameter corresponds approximately to that of the bypass bores 36 and which ends in the transverse bore 32 connecting the channels 14 and 18.

In the first section of the longitudinal bore 34 there is the slender shaft of a throttle valve body 40, which has a throttle body with an external thread 44, which in turn has a counter seat that is opposite the seat 38. The external thread 44 engages in the internal thread 46.

At the end of the shaft facing away from the throttle body there is a screw head which has a screw hole accessible from the open end.

•16- · · ♦ ■ · · j

ben slot 50 and has on its circumference an annular groove with an annular seal which seals against the inner wall of the first section of the longitudinal bore 34.

If the screw head is rotated by engaging the slot 50 with a tool, the distance between the seat 38 and the counter seat 42 increases or decreases. Three longitudinal grooves 48, which are made in the circumference of the external thread 44 of the throttle valve body 40 with the same mutual angular distance, establish the fluid connection between the last and the first section of the longitudinal bore 34.

In the closed position, i.e. when the distance between the seat 38 and the counter seat 42 approaches zero, the fluid connection between the supply channel of the radiator 16 and the discharge channel 14 leading to the pipe system is interrupted, which corresponds to the installation situation of the so-called two-pipe system.

As can be seen in Fig. 2, the shut-off valve body 28 has an annular flange at its free end which rests on the end of the sleeve 24, and a narrow circumferential web on the outer circumferential surface near the annular flange which is snapped into an annular groove in the inner surface of the sleeve 24.

The shut-off valve body has an operating handle not shown in the drawing, which, however, does not or does not always block access to the screw slot 50.

The shut-off valve body 28 and the throttle valve body 40 can be made as machine-turned parts made of brass; other manufacturing processes, such as casting or injection molding, are also conceivable, as are other materials.

The throttle valve body 40 retains the shut-off valve body
28 retains its default setting. This is especially important
If a radiator is disconnected from the mains after a long period of operation of the system
is set, but the preset has not been saved or
is no longer known.

Fig. 3 shows the cartridge of Fig. 2, installed in the housing of the
Fig.1.

Fig. 4 shows a particularly advantageous embodiment according to the present invention. A corresponding device as shown in Fig. 4 can be used according to the invention both for throttle valves with one fluid passage and for throttle valves with two or more and with or without a bypass or bypasses.

The embodiment according to Fig. 4 can equally have all the features as shown in Figs. 1 to 3.

Fig. 4 mainly shows the additional features that are not used in relation to the embodiments according to Figs. 1 to 3.

A spring device 102 is provided, via which a force can be applied both in the axial direction of the functional device or cartridge 100 and in its circumferential direction. This force applied by the spring device can be converted by means of two positive guides or guide devices 106 and 108 in such a way that the actuator or actuators can be transferred to predetermined positions.

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A stop 110 ensures that the actuator(s) which regulate the flow of fluid through the existing fluid passages and/or bypasses are held in predetermined positions.

In order to improve the various adjustment processes, the kinematics and the protection of any existing seals, at least the inner circumference of the sleeve 20 and/or the outer circumference of the functional device or cartridge 100 are at least partially equally or differently conical, so that when the actuator(s) are pulled out a gap is created so that any sealing surfaces do not come into frictional contact with the inner wall of the sleeve 20 during the rotation of the actuator(s) and are thus protected.

The spring device 102 is preferably a conical spiral spring, but it is also possible to replace this spiral spring with an electromagnetic actuating device or the like, which automatically applies forces in both the axial and circumferential directions of the actuating element(s).

Claims (23)

G 94 21 935.4 Attorney file: .42 294 VII New protection claims 1 to 23 1. Cartridge for installation in a connection fitting which is intended for connecting a radiator to the heating pipe system of a heating system operated with a heating fluid, the connection fitting having an inner receiving contour, characterized in that the cartridge has at least in some areas an outer contour or sleeve (24) which fits the inner receiving contour (20),
the cartridge is provided with an actuator (28), and the cartridge has through-lines that match those of the connection fitting, whereby the sleeve (24) and preferably the entire cartridge is at least partially made of plastic. 2. Cartridge according to claim 1, characterized in that at least one operating element (50) is provided on the actuator, wherein the operating element (50) is arranged in the region which is accessible through the open end (22) of the receiving contour or bore (20) or protrudes from it. 3. Cartridge according to one of claims 1 or 2, characterized in that two actuators (28, 40) are provided, each of which is assigned an operating element (50). 4. Cartridge according to claim 3, characterized in that if there are several actuators (28, 40), these are arranged concentrically to one another. VII/Mu/st/ig 5. Cartridge according to one of claims 2 to 4, characterized in that the operating elements (50) are designed as rotary handles. 6. Device according to one of claims 1 to 5, characterized in that the outer contour or sleeve (24) is designed to be pressed into the receiving contour or bore (20). 7. Device according to one of claims 1 to 6, characterized in that the outer contour or sleeve (24) is designed to be shrink-fit into the receiving bore (20). 8. Device according to one of claims 1 to 7, characterized in that the outer contour or sleeve is designed as a hollow cylinder (24) with a base (26) closing one end, its wall being penetrated by two continuous radial bores (30), and that the actuator is a shut-off valve body which is rotatably and sealingly seated in the hollow cylinder (24), preferably as a cylindrical shut-off valve body (28) which has two transverse bores (32) which, in a certain rotational position of the shut-off valve body (28), are aligned with the radial bores (30) in the hollow cylinder (24). 9. Device according to claim 8, characterized in that the shut-off valve body (28) has a longitudinal bore (34) connecting the transverse bores (32) and at least one, but at least two radial bypass bores (36) which are perpendicular to the transverse bores (32) and open into them. 10. Device according to claim 9, characterized in that the longitudinal bore (34) has a seat (38) located between the transverse bores (32), and that a counter seat (42) of an axially movable throttle valve body (40) is arranged opposite the seat (38). 11. Device according to claim 10, characterized in that the throttle valve body (40) has an external thread (44) which engages in an internal thread (46) in the longitudinal bore (26), the internal thread (46) of the longitudinal bore (34) is arranged between the seat (38) and one of the transverse bores (32), preferably the one closest to the open end (22) of the receiving contour or bore (20), and the external thread is penetrated by at least one longitudinal groove (48) or a longitudinal bore, which forms a bypass path. 12. Device according to one of claims 1 to 11, characterized in that the circumferential surface of the outer contour or sleeve (24) and/or the shut-off valve body (28) or the surfaces opposite their surfaces, a plurality of mutually adjacent sealing elements are arranged, which form a plurality of chambers. 13. Device according to claim 12, characterized in that a net-like or mesh-like structure is provided on at least one of the surfaces, which has the plurality of sealing elements and forms the plurality of chambers. 14. Connection fitting for connecting a body, in particular a radiator, to a heating pipe system, a heating system operated with a fluid, a) with a housing (10), b) with at least one connection section for connection to the radiator and the heating pipe system, and c) with at least one adjusting device for influencing the flow medium, preferably a heat transfer medium, in the region of the connection section, in particular in a flow channel in the region of the connection section, characterized in that d) the housing (10) has at least one receiving opening or bore (20) which is open at least on one side and which intersects at least one flow channel (12, 16 and 14, 18) at at least one point, and e) by the features of at least one of claims 1 to 13. 15. Connection fitting according to claim 14, characterized in that the actuators (28, 40) can be actuated via at least one spring device (102), for example a conical spiral spring or the like, wherein forces can be applied by the spring device (102) preferably both in the axial direction and in the circumferential direction of the actuator(s) (28, 40). 16. Connection fitting according to one of claims 14 or 15, characterized in that the adjusting device or devices (28, 40) can be actuated by means of an operating element (104) which is axially parallel to the cartridge and preferably reversibly adjustable and which acts on the adjusting element(s) (28, 40) directly or via the at least one spring device. 17. Connection fitting according to one of claims 14 to 16, characterized in that that at least one control device (106, 108, 110), preferably a control track or control gate or the like, is provided, with which at least one predeterminable position of the actuator(s) can be reversibly adjusted, wherein the actuation can preferably be carried out via the operating element(s) (104) or the spring device(s) (102). 18. Connection fitting according to one of claims 15 to 17, characterized in that a control track, in particular a lifting link (108), is provided which guides the actuating device preferably axially parallel to the latter, by means of which the actuating elements (28, 40) can be moved via the operating element (104) and/or the spring device (106) preferably axially parallel (X) to the actuating device. 19. Connection fitting according to one of claims 14 to 18, characterized in that a control track (106) is provided on the cartridge or the actuator, which can be brought into operative connection with a guide or stop device (110) in order to reversibly set predeterminable positions for controlling the fluid. *5 20. Connection fitting according to one of claims 14 to 19, characterized by a substantially H-shaped housing. 21. Connection fitting according to one of claims 14 to 20, characterized in that the housing is made of metal and/or plastic. 22. Connection fitting according to one of claims 14 to 21, characterized by a bypass, via which the cartridge (34; 100) can preferably be short-circuited. 23. Connection fitting according to claim 22, characterized by the following features: a) the bypass is a line that at least partially surrounds an axially extending shaft; b) the shaft has a throttle valve body (40); and c) the throttle valve body or the shaft has a guide area, in particular a thread.