JPS62159876A - Fixture for thermostat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a housing having a built-in nipple, a cylindrical bore leading to a connector as an extension thereof, and at least another connector (-connected chayuba) therebetween; It is fixed to the nipple and engages with the inner part in the built-in nipple, with the outer part carrying the coupling device for fixing the thermostatic device, which is divided into a shank carrier and a mounting carrier, the tube extension of which is especially cylindrical for plate radiator valves. and a valve insert having a sealing head with a circumferential seal for engagement within a shaped bore.

Such a machine is known from DB-AS 2527132. This document describes a thermostatic valve whose housing is arranged between two Φ plate radiators 2 and whose built-in nipples extending horizontally terminate within the limits of both radiators. A shank carrier carrying the sealing member is screwed into the installation carrier. The mounting carrier is fixed to the built-in nipple by means of a connecting nut and has a connecting device projecting outwardly beyond the end of the plate radiator to secure the thermostatic device in this position. The connecting nut presses the abutting portion of the installation carrier against the end face of the assembled nipple, and the seat is inserted between them, thereby fixing the axial length of the installation carrier. The axial length of the cylindrical hole only slightly exceeds that of the sealing head of the tubular extension of the mounting carrier. This takes into account tolerances that may occur during installation. With such valve inserts consisting of a mounting carrier and a shank carrier, even rough finishing of the housing (threads, shaft bores) is possible.
The advantage is that all components requiring precision machining can be combined within the valve insert. As a result, the valve housing can be welded to the radiator already during manufacture, while the valve insert can only be installed after the radiator has been installed.

It is also already known to insert the shank carrier directly into the built-in nipple of the housing and apply the coupling device to the housing. However, in this case, since the catch is located within the housing, precision machining of the housing is essential.

Furthermore, for the purpose of setting the kv value, the installation carrier is separated from the shank carrier, the ring carrying the coupling device is engaged with the built-in nipple by the outer thread, the shank carrier is placed in the axial direction, and the shank carrier is installed in the catch area. It is also known to press the mounting carrier against a fixed abutment surface. (DE-ps No. 2253462) In practice, a large number of very different thermostatic valves are used. For example, they differ from each other with respect to the length of the built-in nipple (due to the different spacing of the connections to the plate radiator from the radiator end), with respect to the thermostatic device, and so on.

(The coupling device is not standardized), so that a specific valve insert is provided for each application and a number of configurations must be made and prepared accordingly.

The invention is based on the problem of providing a fitting of the above type whose composition is as flexible as possible in order to obtain a number of corresponding manufacturing advantages.

According to the invention, the above-mentioned problem is solved in that the spacing between the shank carrier and the installation carrier is arranged in the inner part of the valve insert, the outer part carrying the coupling device is formed by the shank carrier, and the shank carrier is attached to the built-in nipple. , the mounting carrier has retaining means for fixing its axial built-in length in the built-in nipple, and the axial length of the cylindrical bore is considerably longer than that of the sealing head.

With this configuration, the same pulp insert can be used for built-in nipples of different lengths, since a shorter length allows the sealing head to engage deeper and more easily into the cylindrical bore. The exact length of the hole actually depends on the length of the built-in nipple. In any case, a single type of installation carrier can accommodate all or a considerable range of variations in their lengths.

Since the coupling device is carried by a shank carrier, the shank carrier can be replaced or changed to accommodate different thermostatic devices. In this case too, a large range of changes in connection diameter can be covered. This is because the outer diameter of the shank carrier can be kept smaller in the coupling region than if the coupling device were constructed on a composition surrounding the shank carrier.

If the installation carrier is equipped with a fixed throttle to fix the Kv value, a series of installation carriers with different Kv values can be provided without providing too many installation carriers. This is because these mounting carriers are independent of the length of the installed nipple and the intended thermostatic device.

In the simplest case, the shank carrier has an external thread that engages in the internal thread of the built-in nipple. Therefore, a relatively small diameter can be used. Beyond this screw, the shank carrier can have a large diameter cross section with a circumferential seal maintained in the groove. In addition to the sealing effect, this also makes it possible to provide a step for axially fixing the shank carrier.

It is particularly advantageous if the shank carrier is provided with a fixing device for at least temporarily holding the installation carrier. Therefore, the shank carrier and the installation carrier can be assembled before assembly and then inserted together into the housing. This facilitates assembly.

The fixing device of the shank carrier can be screwed into it as an internal thread the external thread of the mounting carrier. This allows a permanent device which can also be used for axially fixing the mounting carrier.

However, the fixing device of the shank carrier can also be a circumferential groove in which the lugs provided on the mounting carrier engage resiliently. The elasticity of the material is generally sufficient to achieve this elastic movement, but it can also be achieved by additionally providing axial slots.

Advantageously, the fixing device of the shank carrier is arranged inside the ring extension which carries the external thread for fixing to the built-in nipple. In this way, an axially short configuration is obtained.

The holding device of the mounting carrier can in particular be constituted by a circumferential flange cooperating with the end face of the shank carrier. For example, a circumferential flange can define the end position when attaching the screw of the mounting carrier to the shank carrier.

In a different embodiment, the flange can be pressed by the end face of the shank carrier against a step in the installation nipple. The installation carrier is thus held in the axial direction.

The mounting carrier can be made of metal as usual.

However, in a particularly preferred embodiment the mounting carrier can be made of plastic. Such plastic compositions can be produced very economically by injection molding.
Moreover, it can be manufactured accurately. There is no risk of the plastic material becoming overstressed during operation, since only the double-edged blades applied to the catch by the sealing member are transmitted as a tensile force.

In particular, the plastic material may be cold-flowable and an annular bead may protrude on the end face of the circumferential flange. This allows the circumferential flange to be firmly clamped when the shank carrier is screwed in.

The axial length of the cylindrical hole depends on the length of the built-in nipple. In practice, its length will be at least 1.8 times the axial length of the sealing head, but preferably at least twice that length. In particular, the cylindrical hole has a length approximately equal to the height of the chamber within the housing. The displacement distance should be equal to at least half the height of the chamber within the housing.

Space may be best utilized if the cylindrical hole has a length approximately equal to the length of the tube extension.

Preferably, the outer part of the shank carrier is provided with a fixing device for attaching an adapter ring carrying the coupling device. Therefore, it is only necessary to add or replace adapter rings to adapt to different thermostatic devices. The shank carrier may otherwise remain unchanged. This results in considerable rationalization benefits.

Preferably, the adapter ring fixation device comprises an annular abutment and associated external threads. A fixed position can be obtained by tightening this adapter ring against the abutment.

The adapter ring fixing device can be provided axially beyond the coupling device permanently applied to the shank carrier. Adapter rings are therefore only required for some applications.

The coupling device, which is permanently applied to the shank carrier, is formed by a coupling ring mounted rotatably but with a negligible axial displacement on the cylindrical support surface of the shank carrier and fitted in a radial groove at the end of the built-in nipple. radial lugs for engaging. The rotatable coupling ring may have a smaller radial thickness than the ring screwed onto it. The radial lugs will then have the required fixing effect against rotational effects.

In this case, it is advantageous for the cylindrical support surface to have a flat circumferential groove and for the connecting ring to be deformed at discrete points into the circumferential groove. Deformations at isolated points for axial fixation are easiest to create in a thin ring section, such as that created at the base of an axial groove.

Preferably, the cylindrical support surface has a larger diameter than the outer thread of the adapter ring fixation device, such that the coupling end defines an annular abutment. This makes it possible to manufacture the shank carrier without forming an annular abutment thereon.

Furthermore, a circumferential groove with conical side walls can be provided between the adapter ring fixing device and a coupling device permanently applied to the shank carrier for axially fixing the thermostatic device.

The end of the housing carrying the built-in nipple and cylindrical hole is welded into the central part of the housing bounding the chamber. Therefore, the built-in nipple and the end of the housing are made separately. This is possible without the sealing head requiring machining after welding to balance the outermost tolerances of the cylindrical bore. Alternatively, installation to a particular radiator can be accomplished by simply using a different length built-in nipple without changing the other valve components.

The scope of the invention extends to shank carriers and mounting carriers having the necessary features for use with the above-described fixtures. These parts can be sold separately to serve specific applications.

The mounting features also do not affect the use of the shank carrier without a mounting carrier, i.e. with a seat mounted within the housing. Even higher numbers can be achieved if additional shank carriers are used.

Examples of the present invention will be described in detail below with reference to the drawings.

The thermostatic valve fitting shown in Figure 1 is located at the center part 2.
, an end 3 and a built-in nipple 4 . Extending to be mounted between two adjacent plate radiators, the connection 5.6 is welded to an aperture in the front or rear wall of one of the radiators. A passage in the housing end 3 leads to a supply connector. The built-in nipple 4 is welded to the central part 2 along a seam 8 and the end 3 is welded along a seam 9. A chamber 10 is then formed inside.

A valve insert 11 is inserted into this housing, which essentially consists of a shank carrier 12 and a mounting carrier 13. The shank carrier 12 carries the sealing member 14 by means of a shank 15. The latter is forced into the open position by a return spring 16 supported by a step 17 on the shank and a plate 18 of the shank carrier 12. A sealing insert 19, through which the pin 20 passes, is screwed into the free end of the shank carrier. With the aid of this pin it is possible for the actuating shank of a thermostatic device (not shown) to act axially on the valve shank 15. The shank carrier 12 has a threaded nipple 4
It has a cylindrical extension 21 with an outer thread 22 for engaging the inner thread of the mounting carrier 13 and an inner thread 24 for cooperating with the outer thread 25 of the mounting carrier 13. Further towards the outside there is a section 26 of larger diameter in which a circumferential seal 27 is held in the groove. This portion 26 fixes the axial position of the shank carrier 12 by abutting against the step 22 of the threaded nipple 4.

The mounting carrier 13, made of metal, for example brass, fixes the axial position of the mounting carrier 33 by being provided with a circumferential flange 29 cooperating with the end face 30 of the shank carrier 12. Beyond the seat 31 a tube extension 32 extends into a cylindrical bore 33 in the end 3 of the housing. The tube extension is provided with a sealing head 34 having a circumferential seal 35.

A coupling ring 37 with an axial groove on its outer circumference and rotatably held on the cylindrical support surface 39 of the shank carrier 12 is provided as a coupling device 36 for fixing the thermostatic device, unless the shank carrier 12 is also installed. exist. It is avoided that the material of the connecting ring 37 falls at the point where it is deformed into a flat cylindrical groove 41 by a bulge or the like at several locations 40 indicated by arrows. The coupling ring is therefore protected from the risk of falling due to slight axial play. Similarly, the coupling ring has a radial lug 42 which engages in a radial groove 43 at the four ends of the built-in nipple.
Equipped with. The rotational position of the coupling ring 37 is thus fixed even though it is possible to screw the shank carrier 12 into the housing. Immediately before this coupling ring there is a circumferential groove 44 with oblique side walls 45.

When the thermostatic device is pushed onto the coupling device 36, the radially adjustable elements of the thermostatic device are allowed to engage within the cylindrical grooves 44 and fix the axial position.

Immediately before this circumferential groove 44 there is an outer groove 46 having a slightly smaller diameter than the support surface 39 . An adapter ring can be screwed into this screw as will be explained later with respect to FIGS. 4 and 5.

The embodiment of FIG. 2 is comprised of substantially the same parts as the embodiment of FIG. Corresponding parts are therefore designated by reference numbers 100 greater.

The following points are essentially different. Built-in nipple 104
is longer than that in Figure 1. Therefore, the sealing head 134
is at the lower end (at the upper end) of the cylindrical hole 133 in the housing end 103. The amount of displacement thereby allowed is approximately equal to half the height of the chamber 10. Overall, the cylindrical hole 133 corresponds to the height of

The mounting carrier 113 and therefore the catch 131 are also made of plastic. It has an axial slot 47 at its outer end, allowing a section 48 therebetween to flex inwardly.

They have a corresponding circumference in the shank carrier 112.
A lockable cam 124 can be carried within 125 . For this purpose, such a seat as is desired for installation is provided as a device for at least temporarily attaching the carrier to the shank carrier. When screwed tightly into nipple 104, the four annular beads press against step 50 of housing 101, allowing the plastic to partially deform due to cold flow.

The embodiment of FIG. 3 shows an installed carrier 213 having a seat 231 and a sealing member 214. The difference between the installed carriers of FIGS. It is a point provided in the same circular shape with respect to the catch to determine the value. Therefore, replace the installation carrier.
- The maximum flow can be selected according to the data regarding the radiator installation. Figures 4 and 5
In the illustrated embodiment, the shank carrier 12 of FIG. 1 simply has an adapter ring 52 threaded onto the outer thread 46. This adapter ring is screwed in until it hits the abutment surface 53 formed by the end face of the connecting ring 37. The adapter ring 52 is provided with a number of axial grooves 54 around its periphery that can be used for different thermostatic devices than the grooves of the coupling ring 37. It goes without saying that the adapter ring can also have a different shape, for example with an external thread of a much larger diameter. The coupling device 36 is, for example, a DB-PS third
It can be used with thermostatic devices of the type known from No. 236371. The coupling device with adapter ring 52 can be used with a thermostatic device according to DE-ps No. 3112138.

The above fittings allow the manufacturer to select the appropriate valve housing 101 for the selected radiator. Nevertheless, the principle of mounting the radiator allows the customer to select the specific type of thermosphrode device desired while using approximately the same components, and the installation data allows for a specific V value to be selected. You can choose. Nevertheless, the operation is simple since the shank carrier and the installation carrier can be installed and removed together.

Tube extension 32 may also have the same or nearly the same outer diameter throughout. In this case, the "sealing head" can be considered simply as a sealing area around the circumferential seal 35, which area has a width at most three times as large as the width of the circumferential groove.

The handle is not limited to welded housings, but can also be applied to cast housings. It is particularly useful in the case of plate radiators, but can also be used in other radiators and for other purposes.

[Brief explanation of drawings]

1 is a 1.1 sectional view of the first embodiment, FIG. 2 is a longitudinal sectional view of an i-i similar embodiment with a long built-in nipple, and FIG. 3 is the installation pressure and tube extension area of the installation carrier. 4 is a longitudinal sectional view of the outer part of the shank carrier with the adapter ring arranged thereon, and FIG. 5 is a plan view of FIG. 4. 1... Valve insert, 2... Center, 12.1
12...Shank carrier, 13.113... Installation carrier, 36.52... Connection device, 4.104... Built-in nipple, 24.29,124. '1'29... Holding means, 33
．． 133...Cylindrical hole, 34.134...Sealing head, 22...Outer thread, 23...Inner thread.

Claims (1)

[Claims] 1. A housing consisting of a built-in nipple, a cylindrical hole leading to the connector as an extension thereof, and a chamber between them connected to at least one connector; It carries a coupling device for engaging the inner part in the nipple and fixing the thermostatic device on the outer part, and is divided into a shank carrier and a mounting carrier, the tube extension of which engages in a cylindrical bore, in particular for plate radiator valves. and a sealing head having a cylindrical seal for mating,
Shank carrier (12, 112) and installation carrier (1
3, 113) is arranged in the inner part of the valve insert (1) and the coupling device (36, 52)
is formed by the shank carrier, the shank carrier is fixed to the built-in nipple (4, 104), and the mounting carrier has retaining means (24, 29,
124, 129), and further includes cylindrical holes (33, 133).
) is considerably longer than that of the sealing head (34, 134). 2. The shank carrier (12) has a built-in nipple (4)
Device according to claim 1, characterized in that it has an external thread (22) engaging in an internal thread (23) of the device. 3. The shank carrier (12) has a large diameter section (27) held in the groove opposite the screw (22).
29). The device according to claim 2, characterized in that it comprises: 4. Claims 1 to 3, characterized in that the shank carrier (12, 112) consists of a fixing device (25, 125) for at least temporarily holding the installation carrier (13, 113). Equipment as described in one of the paragraphs. 5. The fixing device of the shank carrier (12) is an internal screw (25) into which the external screw (24) of the installation carrier (13) is screwed. Device. 6. Claim 4, characterized in that the fixing device of the shank carrier (112) is a circumferential groove in which the cam (124) on the installation carrier (113) engages resiliently. The device described. 7. Fixing device (2) for shank carrier (12, 112)
5, 125) is arranged inside the annular extension (21, 121) carrying an external thread (22, 122) for fixing to the built-in nipple (4, 104) on the outside Range 4th
Apparatus according to one of clauses 6 to 6. 8. Claim 1, characterized in that the holding means of the mounting carrier (13, 113) are constituted by a circumferential flange (29, 129) cooperating with the end face of the shank carrier (12, 112). A device according to one of paragraphs 1 to 7. 9. The circumferential flange (129) is attached to the shank carrier (11
9. Device according to claim 8, characterized in that it is pressed by the end face of 2) against a step in the built-in nipple (104). 10. Device according to one of claims 1 to 9, characterized in that the mounting carrier (113, 213) is made of plastic material. 11. Device according to claim 10, characterized in that the plastic is deformable and at least one annular bead (49) projects from the end face of the circumferential flange (129). 12. Claims 1 to 11, characterized in that the cylindrical hole (33, 133) has a length approximately corresponding to the height of the chamber (10, 110) in the housing.
Equipment as described in one of the paragraphs. 13, the sealing head (34, 134) has a cylindrical hole (33,
The distance displaced by chamber (133) in the housing is
13. Device according to one of claims 1 to 12, characterized in that the height is equal to at least half of the height (0, 110). 14, the cylindrical hole (33, 133) is connected to the tube extension (32, 1
14. Device according to claim 1, characterized in that it has a length approximately equal to the length of 32). 15. One of claims 1 to 14, characterized in that the outer part of the shank carrier (12) consists of a fixing device (46) for applying an adapter ring (52) carrying a coupling device. The device described in. 16. Device according to claim 15, characterized in that the adapter ring fixation device (46) comprises an annular abutment (53) and an associated external thread. 17. A coupling device (36) in which the adapter ring fixing device (46) is permanently applied to the shank carrier (12).
17. The device according to claim 15 or 16, characterized in that it is provided in the axial direction beyond the axial direction. 18. A coupling device (36) permanently applied to the shank carrier (12) is constituted by a coupling ring (37) which is rotatable but only slightly displaced on the cylindrical support surface (39) of the shank carrier and has a built-in nipple. (4) radial lugs (42) for engagement within radial grooves (43) at the ends;
). Device according to one of the claims 1 to 17, characterized in that it comprises: 19. Claim characterized in that the cylindrical support surface (39) has a flat circumferential groove (41) and the connecting ring (37) is deformable at spaced points into the circumferential groove. Apparatus according to paragraph 18. 20, characterized in that the cylindrical support surface (39) has a larger diameter than the outer thread (46) of the adapter ring fixation device, and the end of the coupling ring (37) forms an annular abutment (53); Device according to one of claims 16 to 19. 21, a circumferential groove (44) with a conical side wall (45) attaches the thermostat device to the adapter ring fixing device (46)
and a coupling device permanently applied to the shank carrier (12).
Equipment as described in one of the paragraphs. 22, built-in nipple (4, 104) and cylindrical hole (33
, 133) is welded into the central part (2, 102) of the housing bounding the chamber (10, 110). 22. A device according to one of clauses 21 to 21. 23. A shank carrier having the necessary features for use in a fitting according to one of claims 1 to 22. 24. An installation carrier having the necessary features for use in a fixture according to one of claims 1 to 22.