CZ286179B6 - Method of connecting heating bodies to hot-water heating apparatus - Google Patents

Abstract

The invented method is intended for connecting heating bodies to a hot-water heating apparatus with a delivery pipe and a runback pipe, whereby those pipes are placed in a building wall or a plaster floor and their connecting parts project either from the wall or the plaster floor. The method is characterized in that the connecting pipes intended for connecting a heating body are cut to required lengths and optionally they are bent, whereupon they are watertight connected with both the heating body connections and with the delivery and the runback pipes. Prior beginning the connection there is formed a single-part tubular element in the form of a double U-shaped arc, whose parts parallel to each other are pressure-tight coupled through the mediation of the connecting part to each other on the U-shaped upper arm, whereby the tubular parts on the U-shaped bottom arm being parallel to each other contain connections for both the delivery pipe and the runback pipe, whereby at least the U-shaped upper arm tubular parts are held at a defined distance from each other by said connecting part and whereby in order to form the connection of both the delivery pipe and the runback pipe with the heating body connections, the connecting part of the U-shaped arm is severed after the double U-shaped arc is positioned in mounting position.

Description

Method of connecting heating elements to a hot water heating device

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a method for connecting heating elements to a heating pipe having a forward pipe and a return pipe, the pipes being laid in a building wall or floor screed and their connecting parts projecting from the wall or screed. They are cut to the required lengths or bent, whereupon they are fluid-tightly connected to both the heater connections and the forward pipe and return pipe.

BACKGROUND OF THE INVENTION

The heating elements are connected by pipes intended for supplying and dissipating heat bodies, which are designed as forward pipes and return pipes and are connected to the heating elements. In this connection, the conduits exit from the laying plane to the connecting plane are provided by guide bends in which the pipe is at least partially inserted and which form a fitting connection of the pipe to the connecting parts of the heater. These guide bends create the passage of hot water pipes laid in the floor or wall of the building to the plane of the heater valves. The known guide bends can be designed to be pivotable about the valve axis to allow adaptation to the different directions of the forward or return line to be connected. By means of these guide bends, it is also possible to obtain a fixed distance between the axes of the forward and return pipes according to the spacing of the heater connections.

Such a connection device for heating elements is described in DE 9115 326.3 U1. The guide arch shown here is of two parts and consists of a base plate which is fixed to the floor and an arched foot which is mounted on the base plate. The base plate is provided on its upper side with a perpendicularly arranged pin and the foot has a recess on its lower side flush with the pin. The foot is therefore movable on the base plate around the pin to any rotated position.

Although this device can be adapted to different directions of the forward and return pipes to be connected, the heater can only be connected according to the known method. This known method consists in first attaching the heater to a wall. Then, according to the heater valve spacing, the width of the joint is marked on the wall at a certain height and this pipe joint is punched. The connecting pipes are then routed through this joint and connected to the heater connections via suitable bends. In this case, it depends essentially on the accuracy of the arcs and the precise cutting of the tubes. In all cases where arcs, such as metal, are not manufactured in the factory, there is no guarantee of compliance with the joint angle and the degree of fine-tuning. However, incorrect bending can easily occur, which can then cause damage to the pipes.

The connecting pipes of the heating elements are usually fastened in the wall joint by means of fast-setting building materials. The connection pipe is then connected to the heater connections, and a pressure test is performed at which the heater must withstand to produce a closed circuit.

In order to carry out other work such as wall plastering and painting, the heating elements must be removed again. For this purpose, the entire heating system that has been tested for pressure must be emptied again. After the heater element (s) have been removed, the heater connection pipes are subjected to high mechanical stresses during the said further work without protection. These connection pipes can be bent, twisted or contaminated. Heaters

As a rule, it is not possible to re-connect the connection pipes again after the plastering and painting work has been completed, after they have been cleaned and their connection parts are brought into the correct position.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method of connecting heating elements to a forward pipe and a return pipe which does not have the drawbacks of the known methods and which eliminates the need for any bending of the connecting pipes at the workplace.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a method for connecting the heating elements to a heating pipe having a forward pipe and a return pipe, the pipes being laid in a building wall or floor screed and projecting from the wall or screed. They are cut into the required lengths or bent, and then they are connected in fluid-tight manner to both the heater connections and the forward pipe and return pipe according to the invention, the principle of which is to create a one-piece double U-shaped tubular element. The mutually parallel portions are pressure-tightly connected to each other by means of a connecting portion on the upper U-shaped arm, wherein the mutually parallel tubular portions on the lower U-shaped arm comprise connections for the forward tube and the return tube, at least the tubular portion The upper U-arm is maintained at a defined distance from each other by said connecting portion, and wherein to form the forward and return pipe connection to the heater connections, the U-shaped upper arm connecting portion is separated after mounting the U-shaped double arc.

It has proven to be advantageous if the tubular portions of the upper arm and the tubular portions of the lower arm are fluid-tightly connected to each other by the base of the U-shaped double arch. of arches.

According to the invention, the double U-shaped arc can be made of a tubular part, preferably by machine. The fluid-tight coupling part on the upper arm provides the advantage that the valve spacing of the heater connection holes is always precisely maintained.

After the fluid-tight connection of the U-shaped double arc according to the invention to the forward pipe and the return pipe via the lower arm, a double arc in the form of an arc of 180 ° is formed to allow a pressure test without connecting the heater.

In this way, for the required pressure test of the pipe, including the heater connections, it can be laid and firmly connected without the need to connect the heater. The heater connections are placed in the joint made in the wall where it is fastened, whereupon the joint is closed. The necessary plastering and painting work can then be carried out in this part.

The application of screed to the floor can also be completely terminated because the tubular portions parallel to each other on the lower arm of the double arc are fluid-tightly connected to the forward pipe and the return pipe.

After all pipe laying has been completed, only the connecting portion of the parallel pipe sections on the upper arm of the double arch protrudes from the wall. Since this connection part is liquid-tight and also the tube parts on the lower arm of the double arc are liquid-tightly connected to the forward tube and return tube, the pressure test can be carried out without connecting the heater. This advantage results in the fact that it is not necessary to carry out the assembly, disassembly and subsequent mounting of the heating elements. Therefore, the heating elements do not have to be suitable

-2GB 286179 B6 Pressure test filled with liquid and emptied again. The pressure test can therefore be carried out without distortion caused by leaking screw connections and the like.

After a positive pressure test, the heater can be installed at any time. To this end, the connecting portion of the upper arm protruding from the wall is detached to the extent that by means of the ends of the tubes protruding from the wall, a fluid-tight connection of the installed heater at its respective connection points is made possible. In this connection, it is advantageous that by machine production of the double arc it is possible to maintain the exact spacing of the pipe ends protruding from the wall, which exactly corresponds to the spacing of the valve portions of the heater. Thereafter, the heater can be operated without retesting the pressure test.

By making the double arc according to the invention machine-made, the need for bending at the workplace is eliminated. This avoids, for example, negatively affecting the flow cross-section of the tubes due to a bad, kinked bend or similar bending error. The method according to the invention ensures that the valve spacing of the heater connection ports is precisely maintained, enables uniform connection heights to be achieved and eliminates the need for additional machining of the connection lines.

Claims (4)

PATENT CLAIMS A method for attaching heating elements to a hot water heating apparatus having a forward pipe and a return pipe, the pipes being laid in a building wall or floor screed and with their connecting parts projecting from the wall or screed, wherein the connecting pipes are cut to connect the heating element They are connected to the heater connections as well as to the forward pipe and return pipe, characterized in that, before the start of the connection, a single-piece tubular element is formed in the form of a double U-shaped bend whose parallel parts are parallel to each other. pressure-tightly connected to each other by means of a connecting portion on the upper U-shaped arm, wherein the parallel tubular portions on the lower U-shaped arm comprise connections for the forward pipe and the return pipe, wherein at least the tubular portions of the upper U-shaped arm are maintained and, in order to form a forward pipe and return pipe connection to the heater connections, the U-shaped upper arm coupling portion is separated after the U-shaped double arc has been placed in the mounting position. Method according to claim 1, characterized in that the tubular portions of the upper U-arm and the tubular portions of the lower U-arm are fluid-tightly connected to each other by the base of the double U-shaped arch. Method according to claim 2, characterized in that the U-shaped double arc is made of a single tubular piece. Method according to claim 2, characterized in that the liquid-tight connection is carried out by welding or soldering the individual tubular parts and arcs.