RU2324865C2 - Method of airtight attachment of connecting adapter, connecting adapter for heating devices, heating device and system consisting of connecting adapter and heating device - Google Patents

Abstract

FIELD: mechanic, power engineering.

SUBSTANCE: the device is intended for connecting the heating device attachment and can be used in heating equipment. The method of airtight sealing of the adapter involves the following: the end surfaces of the connecting flanges are pressed to the end surfaces of nipples through the sealing so that the shell is removably fixed by a fixer on the heating device, the fixer acts on the connecting part connected with the heating device so that a pressing effort is created between the adapter and the heating device; the part is fixed on the heating device in a non-removable manner. The connecting adapter serves for connecting the valve to the heating device. The connecting adapter contains a shell with two connection flanges for connecting to the corresponding nipples of the heating device. The connection flange contains end sealing surfaces, airtightly pressed to the nipples of the heating device through the sealing; a fixer is provided for, which acts on the side of the shell facing away from the connection flanges and, together with the nonmovable part fixed on the heating device, generating a force acting along the axis towards the connection flanges. The heating device, in particular, for connecting the connection adapter; on the heating device, a connection part is installed in a non-split manner, having internal thread and located in the middle between the feeding nipple of the heating device and its exit nipple. The system consists of a connection adapter and a heating device. The invention provides a simple and reliable method of airtight connection of the adapter and provides for the development of an adapter which is compact and easy to use.

EFFECT: provides reliable connection of connecting adapter and simple design.

18 cl, 10 dwg

Description

The invention relates to a method for hermetically securing a connecting adapter comprising a housing with two pipelines on a heating device, one of the pipelines being connected with its connecting flange to the supply pipe of the heating device, and the other pipe with its outlet pipe. The invention also relates to the connecting adapter itself, which can be used to connect a valve, in particular a thermostatic control, or a pump to a heating device. In addition, the invention relates to a heating device connected to an adapter, and a system consisting of an adapter and a heating device.

Such connecting elements with two pipelines are mainly used for heating appliances, the supply and outlet pipes of which are cut in the lower part. This type of connection is known, for example, for the so-called heated towel rails, which are installed in bathrooms in the form of heating appliances with a large surface area and a large number of individual heating pipes. In most cases, connecting elements with two pipelines are subject to a specific standard. So, for example, the nozzles are equipped with a 0.5-inch internal thread and installed with a gap of 50 mm. Intermediate parts are screwed into their thread, on which, in turn, an adapter is mounted using union nuts. The disadvantage of this type of connection is that, due to the large number of necessary parts, installation is relatively time-consuming and requires a large installation space. Hemp, Teflon or special oil seals are used to seal pipeline connections. Also known are threaded joints in the form of clamping rings providing sealing through metal. Known seals create a seal through a thread or the outer wall of inserted pipes into each other. Such seals are difficult to mount and are prone to leaks.

The lack of large installation space is manifested in an unsatisfactory aesthetic impression. So, with regard to heated towel rails, it should be noted that they aesthetically fit into the interior of bathrooms, however, connecting components or protruding thermostatic valves adversely affect the complex design of such heating devices.

From DE 10009137 C, a connecting element for a heating device is known, comprising a connecting pipe for supplying a coolant and a connecting pipe for its removal. Moreover, the specified connecting element of the heating device is not fixed on it, but on pipes protruding from the wall. In accordance with this, on the pipelines going further to the heating device, the connecting element is fastened in the usual way by means of two threaded clamps. However, this type of fastening of the connecting element on the heating device is accompanied by the above disadvantages.

In contrast to the present invention, the embodiment known from DE 10009137 C additionally applies, in particular, individual parts and special forms of connected pipes for fastening the connecting element of the heating device. In this case, first of all, the presence of a thickening or expansion on each of the joined pipes is necessary. As an alternative or additional solution, a separate clamping ring can also be used. In addition, a separate cap piece is required that overlaps the expansion and / or the clamping ring at the back, which leads not only to an increase in the number of parts, but, above all, to a significant increase in the complexity when mounting the connecting element of the heating device, since the expansion and / or clamping ring be formed or installed accordingly only after preliminary fitting of the cap piece.

In contrast to this, the present invention allows for particularly simple and quick installation, which does not additionally require push-in fittings and separate clamping rings. First of all, there is no need for deformation or expansion of the connecting pipes of the heating device when fixing the connecting adapter, which greatly simplifies installation.

In addition, a hydrodynamic system with valve devices is known from DE 2211046 A, and the valve device automatically opens when the connecting device is connected to the system and automatically closes when the connecting device is disconnected from the system. For this, the valve device is removable and can be connected to a conventional manual control valve provided on the heating device. The connecting pipes of the control valve for inlet and outlet are provided with a connecting device for this, which can interact with a removable valve device.

Also in the device known from DE 2211046 A, the heating device is connected in the conventional manner to the valve or the assembly containing it by means of clamping threaded connections, which also leads to the above disadvantages. In contrast to the invention, an attempt has been made here to ensure separation, independent of the heating device, between two valve assemblies different from the heating device, namely, between a removable manual valve and a valve device permanently mounted on a pipeline network. In addition, the connection of both disconnectable valve assemblies implemented here is a relatively complex structure containing many individual parts and requiring correspondingly large installation costs. In contrast, an object of the present invention is a simplified method for directly mounting a heating device to a junction adapter.

Therefore, an object of the present invention is to provide a simple and reliable method for hermetically securing a connection adapter. Another objective of the invention is the creation of a compact and easily manipulated connecting adapter, in particular, for connecting a thermostatic valve, which would harmoniously fit into the design of the heating device. Another objective is the creation of a heating device, which is especially suitable for the use of such a connecting adapter.

This problem is solved in a method of tightly fastening a connecting adapter containing a housing with two pipelines on a heating device, one pipe being connected with its connecting flange to the supply pipe of the heating device, and the other pipe to its outlet pipe, so that the end surfaces of the connecting flanges are adjacent through the seal to the end surfaces of the nozzles, the housing being removably fastened by fixing means to the heating device, and the fixing means acts on the part associated with the heating device, so that a power flow passes through the housing, creating a pressing force between the connecting adapter and the heating device, and the part is fixed to the heating device in one piece.

It is preferable that the casing is mounted on the heating device only by means of fixing means acting on the casing side facing away from the connecting pipes.

It is also preferable that the fastening means is made in the form of a screw passed through a drilled hole in the housing and screwed into a thread made in the heating device.

The second specified problem is solved in the connecting adapter, designed to implement the method of attachment, which can be characterized by the first of the above sets of features of the method or a combination of the above first combination with one or two of the two following mentioned sets of features of the method.

The adapter is used to connect the valve, in particular thermostatic, and / or piping, and / or pump to the heating device, and the connecting adapter includes a housing with two connecting flanges for connection to the corresponding nozzles of the heating device, and characterized in that the connecting flanges contain mechanical seals surfaces tightly adjacent to the nozzles of the heating device through the seal, and fastening means are provided that act on the side of the housing facing th from the connecting flanges, and creating, together with the non-removable fixed on the heating appliance detail force acting axially in the direction towards the connecting flanges.

It is preferable that the connecting flanges contain sealing surfaces made, in particular, grooved, in the housing and covering the inlet openings for pipelines passing through the housing.

It is also preferred that the sealing surfaces form recesses for accommodating the seals.

It is advisable that a radial and / or axial groove is made in the area of the connecting flange or sealing surface for laying a seal or an O-ring in it.

It is also advisable that around the inlet is predominantly a conical protrusion to which a seal or an O-ring can abut.

The preferred option is that the sealing surfaces are in the same plane.

Another preferred option is that the fixing means is in the form of a screw passed through a drilled hole made in the housing and to the head of which access is provided from the housing side facing away from the connecting flanges.

It is also advisable that the drilled hole is made parallel to the axes of the connecting flanges and is located in the plane formed by these axes, and this drilling is located in the middle between the axes for uniform distribution of force on both connecting flanges.

The preferred option is that the screw is made with the possibility of screwing into the internal thread made on the heating device.

A further object of the invention is to provide a heating device, in particular for attaching a connecting adapter, which can be characterized by the first of the above mentioned sets of features of the adapter or a combination of the above-mentioned first sets with one or more of the eight subsequent mentioned sets of features of the adapter.

In the heating device, a connecting piece is permanently fixed having an internal thread located in the middle between the supply pipe of the heating device and its outlet pipe.

The preferred embodiment of the heating device is that the internal thread is made in a connecting part connecting the supply pipe of the heating device to its outlet pipe.

A preferred option is that the connecting part is fixed to the nozzles by welding.

The next objective of the invention is to provide a system consisting of a connecting adapter, which can be characterized by the first of the above sets of features of the adapter or a combination of the above first combination with one or more of the eight subsequent mentioned features of the adapter, and it also consists of a heating device, which can be characterized by the first of the aforementioned sets of features of a heater or a combination of the aforementioned first set with one if two of the following two sets of characteristics of said heater.

The preferred version of the system is that between the heating device and the housing there is a stop providing a predetermined gap between them.

A preferred option is that the seal or O-ring abuts against the inner wall or internal thread of the pipe of the heater.

The main idea of the invention is to create an adapter, which would contain two located, in particular, in the same plane of the end connecting flanges, which by means of a seal are pressed against the mating end surfaces of the pipe of the heating device. The necessary pressing force is achieved by the fastening means acting with easy access, firstly, on the housing and, secondly, on the heating device. In contrast to the currently known mount, in which the adapter is secured with two threaded connections of the connecting elements, in this case the massive case of the adapter is directly connected to the heating device, and the connecting elements are hermetically clamped between the adapter and the heating device. Sealing is achieved with the help of end sealing surfaces, which can be made of arbitrary shape and adhere to each other through the seal. The power flow generated by the fastener according to the invention passes through the entire housing, and not only through the adapter flange. In this way, a more stable connection of the adapter is achieved together with the attached valve or pump.

According to the invention, the end surfaces of the connecting flanges abut through the seal to the end surfaces of the nozzles, and the housing is secured by fixing means on the heating device with the possibility of separation. In this case, the fastening means acts on the part, permanently attached to the heating device in such a way that a power flow passes through the body, creating a clamping force between the connecting adapter and the heating device, while the latter, being prestressed, acts symmetrically on the seals. Symmetric power flow is particularly optimal, since in this case the load is evened out and the pipes are sealed.

The installation according to the invention has several advantages, mainly due to the abandonment of previously used union nuts: first of all, the installation of the adapter has been especially simplified and convenient, in which only one fixing means is used, which in the simplest case is a screw accessible from the outside. The result is fast and reliable installation. At the same time, this mounting method saves parts, such as previously used intermediate parts, and thereby, on the one hand, costs are reduced and, on the other hand, less installation space is required. Thanks to the invention, the gap between the adapter and the heating device is reduced by more than 1 cm.

The above advantages are achieved, in particular, due to the fact that the casing is mounted on the heating device with only one fixing means acting on the casing side facing away from the connecting flanges and easily accessible for the installer with the tool. In a particularly simple and therefore preferred embodiment, the fixing means is a screw passed through drilling in the housing and interacting with the threads of the heating device. It is obvious that the power flow passes through the body of the housing and through the connecting elements is distributed throughout the heating device.

For the implementation of the method, an adapter is optimal, at least two connectors directed towards the heating device of the flange of which contain end sealing surfaces, which through the seal are tightly adjacent to the nozzles of the heating device. In this case, it is envisaged that there is a fastening means acting on the side of the housing facing away from the connecting flanges and creating, together with the holder fixedly attached to the heating device, a force acting along the axis towards the connecting flanges. The fixing means acting on the side facing away from the connecting flanges also forms a power flow passing through the housing. Such an adapter can be used to connect valves of any kind, and it is particularly preferable to attach a valve, such as a temperature control valve, or a pump. The adapter can also be used as a simple connecting piece for supply and branch pipelines. It can also be made in the form of a plug or bypass pipe. To connect the above elements and heating pipes, the adapter contains, of course, the corresponding connecting elements of a known type. In this case, it is advisable to make an adapter of metal or plastic.

The adapter can be made particularly compact if the sealing surfaces of the connecting flanges are placed, in particular screwed, into the housing. The sealing surfaces located inside the housing cover the inlet openings for pipelines that have passed through the housing and, thanks to their offset position, are especially reliably protected from possible damage during installation. In addition, the seals can be equipped with an o-ring of the appropriate size and inserted into flanges made in the form of recesses. They can be pre-mounted by simply inserting them into the adapter and protecting the sealing surfaces with their presence. Thus, the sealing surfaces of the flanges form recesses to accommodate the seals. It is particularly preferred that the sealing surfaces are in the same plane so that sealing of the end surfaces of the connecting pipes of the heating device, usually located in the joint plane, is easily ensured.

In order to avoid damage and squeezing out of the seals due to uncontrolled high pressing force, it is preferable that a stop be placed between the heating device and the housing, through which the housing is directly adjacent to the heating device while ensuring a certain clearance. Due to the gap created by the limiter, only a certain pressure is guaranteed to act on the seals, which, after tightening the fastening means, are pre-stressed only by a predetermined amount. Thanks to the emphasis, an increased tolerance with respect to a certain asymmetry is also provided, while the asymmetry is compensated. This tolerance cannot be achieved with a dynamic seal without a solid stop.

Particularly simple installation is provided when a simple screw is used as the fastening means, to the head of which in the form of an internal hexagon there is access from the side of the housing, facing away from the connecting flanges, and which is passed through drilling in the housing. Thus, the adapter can be mounted and dismantled in just one operation. The counterpart of the screw, in particular the internal thread, is preferably provided directly on the heating device. In simple cases, a fixing sheet with an internal thread is used for this, which is welded in the form of a connecting piece between the nozzles of the heating device. Existing heating devices can be additionally equipped with such a fixed spot welding sheet. In most cases, the geometry of the nozzles is standard, as a result of which it is only necessary to provide an appropriate type of mounting sheets for any type of heating device. A heater equipped with such a permanently attached holder is particularly suitable for connecting a connection adapter according to the invention. Holders and fasteners are made so that they easily and simply interact with each other.

In order to evenly distribute the power flow among the connecting elements and thereby ensure optimal tightness, it is preferable to drill for the fastening means, in particular for the screw, parallel to the axes of the connecting flanges and place it in the plane formed by these axes. In this case, the drilling will be located in the middle between the axes.

In addition, for optimal sealing, it is important that the fastening means, in particular the screw, engage with the holder so deep that the sealing surfaces of the connecting adapter are firmly pressed against the nozzle of the heating device. In the case of using the screw as a fixing means, it is proposed to make a through hole for the internal thread of the holder. If there is an internal thread in the blind hole, it is necessary in any case to ensure that the screw is screwed deep enough into the internal thread.

The invention is explained in more detail below using the examples shown in figures 1-10. It is depicted on:

figure 1 - heated towel rail with an adapter and a thermostatic valve,

figure 2 - connecting adapter 5 in an enlarged view,

figure 3 - connecting adapter, front view,

figure 4 - connecting adapter, rear view,

figure 5-figure 10 - six sealing capabilities of the sealing ring.

Figure 1 shows a well-known heated towel rail 1 with the opposite side facing the wall, containing two vertical distribution pipes 2 and horizontally located heating pipes 3. On the lowest heating pipe 4 with an internal partition, a connecting adapter 5. Using a connecting adapter 5, leaving walls (not shown) inlet and outlet pipelines of the heating system are connected through pipe 6. On the outlet pipe, thermostatic valve 7 is connected through the housing adapter 5. Figure 2 shows an adapter 5 in an enlarged view. In this case, the nozzles 6 have a standard clearance of 50 mm and are located in one plane perpendicular to the wall. In the illustrated adapter 5, the pipelines are bent in the form of a bend at an angle of 90 ° and exit the plane of the heater in the direction of the wall. Thermostatic valve 7 is located on the side, has a separate connection and is cut into the outlet pipe of the adapter.

Figure 3 and 4 shows the individual parts of the connecting adapter, rear view, a drawing with the image in a disassembled form. Here you can see the compact housing 8 with two connecting flanges 9, which are used to connect to the corresponding nozzles 10 of the heating device 1. The connecting flanges 9 have sealing surfaces screwed into the housing 11, covering the inlets 12 for pipelines passed through the housing. The supply and outlet pipelines of the heating system are connected, as described, through nozzles 6. In this case, a thermostatic valve 7 is connected to the outlet piping. The sealing surfaces 11 form recesses used to accommodate the seals 13. The seals 13 are made of rubber or soft plastic and contain a sealing a disk overlapping the sealing surfaces 11. The sealing discs abut on the other side to the end surface of the nozzles 10 and a cylindrical protrusion go inside them. For a more reliable fixation inside the nozzles 10 around the cylindrical protrusions are provided locking nodules.

In this case, a screw 14 is provided as a fastening means, which is passed through a drilled hole 15 made in the housing 8 and to the head of which is accessible from the side of this housing facing away from the connecting flanges 9. The drilled hole 15 extends parallel to the axes of the connecting flanges 9 and lies in formed by these axes of the plane. In this case, the drilled hole 15 is located in the middle between the axes so that the force is evenly applied to both connecting flanges 9. The screw 14 can be screwed into the internal thread 16 on the heating device 1, which is made on the connecting part 17, connecting the supply pipe 10a and the outlet nozzle 10b. The connecting part 17 is located in the middle between the nozzles and fixed by spot welding.

4, a rear view of the connection adapter is shown again. Additionally shown is the casing 18, worn on the nozzles 10 after mounting the adapter and contributing to the harmonious design of the system, consisting of a heating device and a connecting adapter.

Figure 5 shows three sealing methods in which an O-ring 19 is used between the nozzle 10 and the housing 8. Fig. 5a shows a sealing surface 11 with a groove 20 formed in it, into which an O-ring 19 is placed. Around the inlet holes 12 made a cone, which is adjacent to the internal thread of the pipe. Since the nozzles 10 in most cases have a varnish coating, it is advisable to use a seal, like figure 5b, in a place where there is no varnish, for example, on the internal thread of the nozzle 10. As a result, contact between the O-ring and the varnished area will be eliminated and leaks will be prevented caused by varnish expansion upon heating. In the fixed state, the very front edge 21 of the pipe 10 abuts against the housing 8, and the O-ring 19 is clamped at a given force between the cone and the inner diameter. On figv shows an example of execution in which the groove is made radially on the inner wall of the housing, covering the sealing surface 11. The inserted O-ring 19 provides sealing with respect to the outer wall of the pipe 10, abutting against the housing 8. In figures 5g, 5d, 5e shows other sealing methods.

For fixing, it would be possible to use another part that is screwed into the pipe 10, for example, using a Teflon seal, in which case the part will provide sealing in relation to the housing 8. It is also possible that the fastening screw 14 is screwed directly into the heat device 1 moreover, in this case, between the nozzles of the heat device 1, a threaded plug is welded to the pipe 4, into which a fastening screw 14 is screwed.

List of items

1 heater

2 vertical distribution pipes,

3 horizontal heating pipes,

4 lowest heating pipe,

5 connecting adapter,

6 branch pipe

7 thermostatic valve,

8 building

9 connecting flanges,

10 pipe heater

10a supply pipe

10b branch pipe

11 sealing surfaces

12 inlets,

13 seals,

14 fixing means (screw),

15 drilled hole,

16 internal thread

17 connecting part,

18 casing

19 O-ring,

20 groove for o-ring,

21 pipe edge.

Claims (18)

1. A method of tightly fastening a connecting adapter (5) comprising a housing (8) with two pipelines on a heating device (1), one pipe being connected to a supply pipe (10) of the heating device by its connecting flange (9), and the other pipe to it outlet pipe (10), characterized in that the end surfaces of the connecting flanges (9) are adjacent through the seal (13) to the end surfaces of the pipes (10), and the housing (8) is removably fastened by fixing means (14) on the heating device (1), and crepe the hedgehog means (14) acts on the connecting part (17) connected to the heating device (1), so that a power flow passes through the housing (8), creating a pressing force between the connecting adapter (5) and the heating device (1), moreover, the part (17) is fixedly attached to the heating device. 2. The method according to claim 1, characterized in that the housing (8) is mounted on the heating device (1) only by means of fixing means (14) acting on the side of the housing (8) facing away from the connecting pipes (9). 3. The method according to claim 2, characterized in that the fixing means (14) is made in the form of a screw passed through a drilled hole (15) in the housing (8) and screwed into the thread (16) made in the heating device (1). 4. The connecting adapter for implementing the method according to one of claims 1 to 3, used to connect the valve, in particular thermostatic, and / or piping and / or pump to the heating device (1), and the connecting adapter (5) contains a housing (8 ) with two connecting flanges (9) for connecting to the corresponding nozzles (10) of the heating device (1), characterized in that the connecting flanges (9) contain end sealing surfaces (11) that are tightly adjacent to the nozzles (10) of the heating device (1) ) through the seal nomenclature (13), and fastening means (14) are provided, acting on the side of the housing (8), facing away from the connecting flanges (9), and creating, along with the axis acting non-removably fixed on the heating device (1), (17), towards the connecting flanges (9). 5. The connecting adapter according to claim 4, characterized in that the connecting flanges (9) contain sealing surfaces (11) made, in particular grooved, in the housing (8) and covering the inlet openings (12) for those passed through the housing (8) pipelines. 6. The connecting adapter according to claim 5, characterized in that the sealing surfaces (11) form recesses to accommodate the seals (13). 7. The connecting adapter according to one of claims 4 to 6, characterized in that a radial and / or axial groove is made in the area of the connecting flange (9) or the sealing surface (11) to fit the seal (13) or the O-ring (19). 8. The connecting adapter according to one of claims 4 to 6, characterized in that around the inlet (12) there is mainly a conical protrusion to which a seal (13) or an O-ring (19) can abut. 9. The connecting adapter according to one of claims 4 to 6, characterized in that the sealing surfaces (11) lie in the same plane. 10. The connecting adapter according to one of claims 4 to 6, characterized in that the fixing means (14) is made in the form of a screw passed through a drilled hole (15) made in the housing (8) and access to the head of which is provided from the side of the housing ( 8) facing away from the connecting flanges (9). 11. The connecting adapter according to claim 10, characterized in that the drilled hole (15) is made parallel to the axes of the connecting flanges (9) and is located in the plane formed by these axes, and this drill hole is located in the middle between the axes for uniform distribution of force on both connecting flanges (9). 12. The connecting adapter according to claim 10, characterized in that the screw (14) is made with the possibility of screwing into the internal thread (16) made on the heating device (1). 13. A heating device, in particular for attaching a connecting adapter according to one of claims 4-12, characterized in that a connecting part having an internal thread located in the middle between the supply pipe (10) of the heating device is permanently attached to the heating device (1) and its branch pipe (10). 14. The heating device according to claim 13, characterized in that the internal thread (16) is made in the connecting part (17) connecting the supply pipe (10) of the heating device to its outlet pipe (10). 15. A heating device according to claim 14, characterized in that the connecting part (17) is fixed to the nozzles (10) by welding. 16. The system, characterized in that it consists of a connecting adapter (5), made according to PP.4-12 and a heating device (1), made according to PP.13-15. 17. The system according to clause 16, characterized in that between the heating device (1) and the housing (8) there is a stop providing a predetermined gap between them. 18. The system according to item 16 or 17, characterized in that the seal (13) or the O-ring (19) abuts against the inner wall or internal thread of the pipe (10) of the heating device (1).

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