JPH0445713B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fitting for a thermostatic valve, and more particularly a built-in nipple and, in its extension, a cylindrical hole leading to a connection. a housing comprising, between said connection part, a chamber connected to at least one further connection part; and a valve insert to be fixed to said built-in nipple, the inner part of which is in said built-in nipple. a sealing head which engages and whose outer portion supports a coupling device for securing a thermostat attachment and which includes a shank carrier and a circumferential seal and which engages within said cylindrical bore; The present invention relates to a thermostatic valve fitting with a valve insert split into a mounting carrier in its tube extension, and in particular to a thermostatic valve fitting for plate radiator valves.

PRIOR ART A thermostatic valve fitting having such a construction is known from German Patent Application No. 2527132. This West German patent publication publication is
A thermostatic valve is disclosed in which the housing is arranged between two plate radiators and a horizontally extending integral nipple terminates within the radiator. The shank carrier supporting the closing member is screwed onto the mounting carrier, which is fixed to the built-in nipple by means of a connecting nut and projects outside the end of the plate radiator, in this position for fixing the thermostatic device. It is equipped with a connecting device. The connecting nut presses the abutment of the installation carrier against the end surface of the built-in nipple through the seal,
The axial position of the installed carrier is fixed. The axial length of the cylindrical bore is only slightly greater than the length of the sealing head of the tube extension of the installation carrier. Therefore, it is sufficient to take tolerances into consideration during assembly. In this way, by using a valve insert consisting of a mounting carrier and a shank carrier, all parts that require high precision can be assembled inside the housing, even if the finish of the housing (threads, axial holes) is rough. It has the advantage of being compatible. As a result, the valve housing can be welded to the radiator during manufacture, while the valve insert is installed only after the radiator has been installed.

It is also known to insert the shank carrier directly into the built-in nipple of the housing and to attach the coupling device to the housing (DE 2311080). However, in this case, a valve seat is already provided in the housing, so that precision machining of the housing is essential, and the lower part of the cylindrical hole is used as the valve seat.

Furthermore, in order to set the kv value, the installation carrier is separated from the shank carrier, the ring supporting the coupling device is engaged by means of an external thread with the built-in nipple, and the shaft is attached to the shank carrier. The shank carrier is configured to press the mounting carrier against an abutment surface arranged in the region of the seat, with a directional load, and the lower part of the cylindrical hole is used to support the valve seat. It is also known (West German patent no. 2253462
issue).

PROBLEM SOLVED BY THE INVENTION In practice, a large number of very different thermostatic valves are used. For example, plate radiator connections may have different spacings from the radiator ends, built-in nipples may have different lengths, or coupling devices may not be standardized.
They are different from each other, such as different thermostat devices. Therefore, in each case, special valve inserts are prepared, and correspondingly, a large number of structures are manufactured and kept in stock.
It had to be stored, and it was not appropriate to manufacture large quantities of a single structure, resulting in uneconomical results.

OBJECTS OF THE INVENTION The object of the invention is to provide a thermostatic valve fitting whose components can be used in as many different ways as possible, and which has a large number of components and corresponding manufacturing advantages. The purpose is to

Arrangement and operation of the invention It is an object of the present invention that a separating gap is provided between the shank carrier and the mounting carrier of the inner part of the valve insert, and that the outer part supporting the coupling device formed by a shank carrier, said shank carrier being fixed to said built-in nipple, said mounting carrier comprising retaining means for ensuring an axial built-in length in said built-in nipple; This is achieved by configuring the axial length of the cylindrical bore to be significantly longer than the length of the sealing head.

According to the invention, one and the same valve insert can be used for installation nipples of different lengths, since the sealing head engages deeper into the cylindrical bore despite its shorter length. The exact length of the hole is determined in practice by the degree of variation in length of the built-in nipple. In any case, by means of a kind of installation carrier, all
Alternatively, it becomes possible to cover a very large number of built-in nipples of different lengths.

Since the coupling device is supported by a shank carrier, it is possible to replace or modify the shank carrier to accommodate different thermostat attachments. This allows the outer diameter of the shank carrier to be reduced by forming the coupling device on the surrounding member of the shank carrier.
Since the connecting portion can be kept smaller, it is possible to accommodate a wide range of changes in the connecting diameter.

If the stationary carrier is equipped with a fixed throttle for fixing the kv value, it is possible to avoid storing too many stationary carriers in stock.
A series of installed carriers with different kv values can be provided. This is because the mounting carrier is independent of the installation nipple length and desired thermostat attachment.

In the simplest configuration, the shank carrier has an external thread that engages an internal thread of the built-in nipple. This allows the diameter to be reduced considerably.

On the outside of this thread, the shank carrier may be provided with a large diameter section with a circumferential seal held in a groove. In addition to the sealing effect, this provides a step for axially fixing the shank carrier.

Preferably, the shank carrier has a mounting member for retaining the stationary carrier, at least temporarily. By doing so, the shank carrier and the installation carrier can be assembled before assembly, and both can be inserted into the housing, making assembly easier.

The mounting member of the shank carrier may be constituted by an internal thread into which the external thread of the mounting carrier is screwed. This also provides a permanent fixing element that can be used to axially fix the installation carrier.

The mounting member of the shank carrier may also consist of a circumferential groove in which a lug provided on the mounting carrier engages resiliently. To achieve such elastic mobility, the elasticity of the material alone is generally sufficient, but in addition axial slots can also be used.

Preferably, the shank carrier attachment member is provided within an annular extension that supports the outer threads of the shank carrier for securing to the built-in nipple. This makes it possible to shorten the length in the axial direction.

The retaining member of the stationary carrier may be formed by a circumferential flange cooperating with the end face of the shank carrier. For example, the circumferential flange can determine the position of the end by the threads that attach the mounting carrier to the shank carrier.

In a further embodiment of the invention, the circumferential flange is designed to be able to be pushed against the step of the built-in nipple by the end face of the shank carrier. Thereby, the installed carrier can be firmly held in the axial direction.

The mounting carrier can usually be made of metal. However, in a preferred embodiment, the mounting carrier is formed of plastic. The construction of the mounting carrier from plastic is extremely economical and can be produced precisely by injection molding. Since only the force exerted by the closure member is transmitted as a tensile force, there is no risk of overstressing the plastic material during operation.

The plastic material may be cold flow and at least one annular bead protrudes from the end face of the circumferential flange. This ensures that the circumferential flange is firmly clamped when the shank carrier is screwed in.

The axial length of the cylindrical hole is adjusted according to the length of the installed nipple. In practice, the axial length of the cylindrical bore is at least 1.8 times the length of the built-in nipple, but preferably more than twice the axial length of the sealing head. In particular, it is desirable for the cylindrical hole to have a length substantially equal to the height of the chamber of the housing. Preferably, the distance of displacement of the sealing head within the cylindrical bore is equal to at least half the height of the chamber of the housing. If the cylindrical hole has a length substantially equal to the length of the tube extension, it is possible to maximize the utilization of space.

In a preferred embodiment, the outer part of the shank carrier is provided with an adapter ring attachment member for attaching an adapter ring supporting the coupling device. This way, adapter rings can be simply installed or replaced to accommodate different thermostat attachments. Also, there is no need to replace the shunk carrier. This is extremely effective for rationalization.

Preferably, the adapter ring attachment member comprises an external thread associated with the annular abutment. This adapter ring can be set in a desired position by firmly tightening it to the abutting portion.

The adapter ring attachment member may be provided with a coupling device permanently attached to the shank carrier on the axially outer side. Therefore, adapter rings are only required in certain usage situations.

In a preferred embodiment, the coupling device permanently attached to the shank carrier is rotatable but only slightly displaceable in the axial direction on the cylindrical support surface of the shank carrier. and is formed by a connecting ring with radial lugs that engage radial grooves in the ends of the built-in nipples. The rotatable coupling ring may have a smaller radial thickness than the ring threaded onto it. Radial lugs provide the necessary guarantee against rotation.

In this case, it is preferred that the cylindrical support surface is provided with a planar circumferential groove and that the connecting ring is configured to enter into the circumferential groove and be deformed at points. Deformations at such points for axial fixation can most easily be produced in the thin part of the ring, such as in the circumferential groove at the base.

Preferably, the cylindrical support surface has a larger diameter than the outer threads of the adapter ring attachment member and is configured such that the ends of the coupling ring form an annular abutment. By doing this,
There is no need to form an annular contact portion on the shank carrier, and the shank carrier can be manufactured easily.

Furthermore, a circumferential groove with a conical side wall is
A thermostat attachment can be axially secured between the adapter ring mounting member and a coupling device permanently attached to the shank carrier.

Preferably, the ends of the housing carrying the built-in nipple and the cylindrical bore are welded to the central part of the housing that defines the chamber. It is therefore possible to manufacture the built-in nipple and the end of the housing separately. Thereby, the sealing head adjusts the tolerances within the cylindrical bore to the greatest extent possible, so that no machining after welding is required. Furthermore, by simply using built-in nipples of different lengths, it can be adapted to a particular radiator without changing other parts of the valve.

The invention can also be applied to shank carriers and stationary carriers having the necessary features for use with the above-mentioned fixtures. These parts may be sold separately and used for specific applications. Features for adaptation include the use of shank carriers without installed carriers,
That is, with a seat fixed to the housing,
There is no harm in using a shank carrier. If shank carriers are used in this way, larger numbers are realized.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a schematic longitudinal sectional view of a thermostatic valve fitting according to an embodiment of the present invention.

In FIG. 1, a thermostatic valve fitting according to an embodiment of the invention has a housing 1 with a central portion 2, an end portion 3 and a built-in nipple 4. The housing 1 extends between two adjacent plate radiators for mounting purposes;
The connections 5, 6 are welded to an aperture in one of the front or rear walls of the radiator. A passage 7 in the end 3 of the housing 1 leads to a supply connection. The built-in nipple 4 is connected by welding to the central part 2 along a seam 8 and the ends 3 along a seam 9. As a result, a chamber 10 is formed inside.

A valve insert 11 is inserted into the housing 1, which essentially consists of a shank carrier 12 and a mounting carrier 13. The shank carrier 12 is connected to the closing member 14 by the shank 15.
is supported. shank 15 is shank 15
is pushed into the open position by a return spring 16 supported by a step 17 and a plate 18 fixed to the shank carrier 12. A sealing insert 19, through which a pin 20 is inserted, is screwed into the free end of the shank carrier 12. This pin 20 allows an actuating shank of a thermostat attachment (not shown) to act axially on the shank 15 of the valve. The shank carrier 12 has a cylindrical extension 21 which has an outer thread 22 that engages with the inner thread of the built-in nipple 4 and an outer thread 25 of the mounting carrier 13. It is provided with cooperating internal threads 24. Furthermore, in the outward direction,
A large diameter section 26 is provided having a circumferential seal 27 supported within the groove. This large diameter portion 26 is
By abutting against the step 28 of the built-in nipple 4, the axial position of the shank carrier 12 is guaranteed.

Installation carrier 13 made of metal such as brass
is provided with a circumferential flange 29 which cooperates with the end face 30 of the shank carrier 12 and ensures the axial position of the mounting carrier 13. Beyond the seat 31 a tube extension 32 extends into a cylindrical bore 33 at the end of the housing 1 . Pipe extension 32
has a seal head 34 with a circumferential seal 35.

As a coupling device 36 for fixing a thermostat attachment (not shown), an axial groove 38 is provided on the outer circumferential surface of the cylindrical support surface 39 of the shank carrier 12, unless the shank carrier 12 is installed. A rotatably held coupling ring 37 is provided. Falling out is prevented because the material of the coupling ring 37 deforms, such as by graining, into a flat circumferential groove 41 at various locations indicated by arrows 40. The coupling ring 37 is therefore prevented from falling due to slight axial play. The coupling ring 37 also comprises a radial lug 42 that engages in a radial groove 43 at the end of the built-in nipple 4.
In this way, the shank carrier 12 is screwed into the housing 1, but the rotational position of the coupling ring 37 is nevertheless guaranteed. This coupling ring 37 is connected in series to a circumferential groove 44 with oblique side walls 45 . A thermostat attachment is on the coupling device 36,
When pushed in, the radial adjustment member of the thermostat attachment engages within the circumferential groove 44 and fixes its axial position.

This circumferential groove 44 is connected in series with an external thread 46 having a slightly smaller diameter than the support surface 39 . An adapter ring can be screwed into this thread, as will be explained below with reference to FIGS. 4 and 5.

FIG. 2 is a schematic longitudinal sectional view of a thermostatic valve fitting according to another embodiment of the present invention.

In FIG. 2, a thermostatic valve fitting according to another embodiment of the invention is constructed from many of the same parts as the thermostatic valve fitting shown in FIG. Accordingly, parts corresponding to FIG. 1 have been given reference numbers incremented by 100. The thermostatic valve fitting shown in FIG. 2 differs from the thermostatic valve fitting shown in FIG. 1 in the following respects. First, the length of built-in nipple 104 is longer than in the embodiment shown in FIG. Therefore, the sealing head 134 is located at the upper end of the cylindrical bore 133 in the end 103 of the housing 101 rather than at the lower end. The possible displacement is substantially equal to half the height of chamber 110. Overall, the cylindrical hole 133 corresponds to the height of the chamber 110.

Installation carrier 113 and therefore seat 131
is made of plastic material. At its outer end an axial slot 47 is provided such that a section 48 therebetween can be bent elastically towards the inside. Portion 48 carries a cam 124 that engages a corresponding circumferential groove 125 of shank carrier 112. This results in
The installation carrier 113, at least temporarily,
It becomes possible to attach it to the shank carrier 112, which is useful during assembly. The circumferential flange 129 is provided with an annular bead 49 which, when the shank carrier 112 is firmly screwed onto the built-in nipple 104, presses against the step 50 of the housing 101 and presses against the plastic. Due to normal temperature flow,
partially transformed.

FIG. 3 is a schematic vertical sectional view showing another example of the installation carrier.

The installation carrier 213 shown in FIG.
Only at the point provided concentrically with the seat 231 is the first
This is different from that shown in FIG. By replacing the installation carrier 213, the maximum flow rate can therefore be selected depending on the data of the heating device.

In FIGS. 4 and 5, the shank carrier 12 is simply fitted with an adapter ring 52 threaded onto the outer thread 46. In FIGS. The adapter ring 52 is screwed in until it abuts an abutment surface 53 formed by the end face of the coupling ring 37 . adapter ring 52
has a number of radial grooves 54 on its circumferential surface, which are adapted to accommodate different thermostat attachments than the axial grooves 38 of the coupling ring 37. Adapter ring 52 may be externally threaded or
It goes without saying that it may have a larger diameter or a different shape.

The coupling device 36 is, for example, disclosed in West German Patent No. 3236371.
It can be used together with a known thermostat attachment such as No. The coupling device with the adapter ring 52 can be used, for example, with the thermostat attachment known from DE 31 12 138 et al.

The above fittings allow the manufacturer to select the appropriate valve housing 101 for the chosen radiator. Irrespective of this, the operator installing the radiator can select a given thermostat attachment product, using widely identical parts, according to the customer's wishes, and can also use equipment data. Therefore, given
kv value can be selected. in spite of,
Since the shank carrier and the installed carrier are installed together and removed together, operation is extremely simple.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included within the scope of the present invention. Needless to say, it is.

For example, tube extensions 32 may have the same or substantially the same outer diameter throughout. In this case, the sealing head 34 can be considered simply as the sealing area around the circumferential seal 35 with a width at most three times the width of the circumferential groove.

The fixture of the present invention is not limited to welded housings, but can also be applied to cast housings. Further, although the present invention is highly effective for plate radiators, it can be used for other radiators and even for other purposes.

Effects of the Invention According to the present invention, the constituent elements can be used in various ways as much as possible, and the number of constituent elements is large.
Correspondingly, it is possible to provide a thermostatic valve fitting that provides manufacturing benefits.

[Brief explanation of drawings]

FIG. 1 is a schematic longitudinal sectional view of a thermostatic valve fitting according to an embodiment of the present invention. FIG. 2 is a schematic longitudinal sectional view of a thermostatic valve fitting according to another embodiment of the present invention. FIG. 3 is a schematic vertical sectional view showing another example of the installation carrier. Figure 4 shows
FIG. 5 is a schematic vertical sectional view showing another example of the shank carrier, and FIG. 5 is a schematic plan view thereof. DESCRIPTION OF SYMBOLS 1,101... Housing, 2,102... Center part, 3,103... End part, 4,104... Built-in nipple, 5, 6... Connection part, 7... Passage, 8, 9... Seam, 10,110... Chamber, 11... Valve insert, 12, 112... Shank carrier, 1
3,113,213...Installation carrier, 14,2
14... Closing member, 15... Shank, 16... Return spring, 17... Step part, 19... Seal insert, 20... Pin, 21, 121... Cylindrical extension part,
22, 122...Outside thread of built-in nipple, 2
5,125...External thread of installation carrier, 26
...Large diameter portion, 27...Circumferential seal, 28...Step part of built-in nipple, 29,129...Circumferential flange, 30...End face of shank carrier, 31,1
31,231...Seat, 32,132...Pipe extension, 3
3,133... Cylindrical hole, 34,134... Seal head, 35... Circumferential seal, 36... Connecting device, 37,137... Connecting ring, 38... Axial groove, 39... Cylindrical support surface, 41... Circle Circumferential groove, 4
2... Radial lug, 43... Radial groove, 44... Circumferential groove, 46... Outer thread, 47... Axial slot, 49... Annular bead, 50... Step portion of housing, 51... Throttle hole, 52... Adapter ring , 53...Abutment surface, 54...Radial groove.

Claims (1)

Claims: 1. A housing with a built-in nipple, in its extension a cylindrical hole leading to a connection, and a chamber between said connection and connected to at least one further connection. , a valve insert to be secured to the built-in nipple, the inner part of which engages within the built-in nipple and the outer part of which supports a coupling device for securing a thermostat attachment; , a thermostatic valve fitting having a valve insert divided into a shank carrier and a mounting carrier having a seal head in the tube extension with a circumferential seal and engaging in the cylindrical bore, A separating gap is provided between the shank carrier and the mounting carrier of the inner part of the valve insert, and the outer part supporting the coupling device is formed by the shank carrier and the shank A carrier is fixed to the built-in nipple, the mounting carrier comprising retaining means in the built-in nipple for ensuring an axial built-in length, the axial length of the cylindrical bore being fixed to the sealing head. A thermostatic valve fitting characterized in that it is configured to be substantially longer than the length of the thermostatic valve. 2. The thermostatic valve fitting of claim 1, wherein the shank carrier has an outer thread that engages an inner thread of the built-in nipple. 3. The shank carrier according to claim 2, characterized in that on the outside of the outer thread, the shank carrier has a large diameter section with a circumferential seal retained in a groove. Thermostat valve fitting. 4. The yank carrier, at least temporarily,
4. A thermostatic valve mounting device according to any one of claims 1 to 3, characterized in that it has a mounting member for holding a mounting carrier. 5. The thermostatic valve mounting device according to claim 4, wherein the mounting member of the shank carrier is constituted by an internal thread into which an external thread of the installation carrier is screwed. 6. Claim 4, characterized in that the mounting member of the shank carrier is constituted by a circumferential groove in which a lug provided on the mounting carrier engages elastically. thermostatic valve fitting. 7. A mounting member of the shank carrier is provided in an annular extension supporting the outer thread of the shank carrier for fixing to the built-in nipple. A fitting for the thermostatic valve according to any one of paragraph 6. 8. According to any one of claims 1 to 7, the holding member of the stationary carrier is formed by a circumferential flange cooperating with the end face of the shank carrier. thermostatic valve fitting. 9. Thermos according to claim 8, characterized in that the circumferential flange is configured such that it can be pressed by the end face of the shank carrier towards the step of the built-in nipple. Tatsut valve fitting. 10. A thermostatic valve fitting according to any one of claims 1 to 9, characterized in that the mounting carrier is formed of plastic. 11. The thermostatic valve fitting of claim 10, wherein the plastic is deformable and at least one annular bead projects from the end face of the circumferential flange. 12. Any one of claims 1 to 11, wherein the cylindrical hole has a length that substantially corresponds to the height of the chamber of the housing. Thermostatic valve fittings as described in . 13. According to any one of claims 1 to 12, the distance of displacement of the seal bed within the cylindrical hole is equal to at least half the height of the chamber of the housing. thermostatic valve fitting. 14 the cylindrical hole is in the length of the tube extension;
14. A thermostatic valve fitting as claimed in any one of claims 1 to 13, characterized in that it has substantially equal lengths. 15. Any one of claims 1 to 14, characterized in that the outer part of the shank carrier is provided with an adapter ring attachment member for attaching an adapter ring supporting the coupling device. Thermostatic valve fittings as described in section. 16. The thermostatic valve fitting of claim 15, wherein the adapter ring fitting includes an external thread associated with an annular abutment. 17. The thermostat according to claim 15 or 16, characterized in that the adapter ring attachment member is provided with a coupling device permanently attached to the shank carrier on the axially outer side. Valve fitting. 18. A coupling device permanently attached to the shank carrier is provided in such a way that it is rotatable but only slightly displaceable in the axial direction on a cylindrical support surface of the shank carrier. , formed by a connecting ring with radial lugs that engage in radial grooves in the ends of the built-in nipples.
A fitting for the thermostatic valve described in any one of paragraphs. 19. Claim 19, characterized in that said cylindrical support surface is provided with a planar circumferential groove, and said connecting ring is configured to enter said circumferential groove and to be deformed at points. A fitting for the thermostatic valve according to item 18. 20. Claims characterized in that the cylindrical support surface has a larger diameter than the outer thread of the adapter ring attachment member, and the end of the connection ring forms the annular abutment. 16th
A fitting for the thermostatic valve according to any one of Items 1 to 19. 21 a circumferential groove having a conical sidewall connects the adapter ring mounting member to axially secure the thermostat attachment;
Installation of the thermostatic valve according to any one of claims 17 to 20, characterized in that the thermostatic valve is provided between the connecting device and the connecting device permanently attached to the shank carrier. Ingredients. 22. Claims 1 to 21, characterized in that the end of the housing carrying the built-in nipple and the cylindrical bore is welded to a central part of the housing defining the chamber.
A fitting for the thermostatic valve described in any one of paragraphs.