DE19607694A1 - Connecting block for forward and back flow - Google Patents

Abstract

The connecting block controls the forward and reverse flow of a fluid. It has a deflector element for reversing the flow direction. The alteration in the flow direction is achieved by turning the deflector element by 90 degrees to the right or left. A handwheel or other control element may be used.

Description

It is known radiators of a building heating system with connection blocks (Combination fittings for flow and return e.g. valve radiator with built-in valve set connections for flow and return from below, connections not to be confused.

Radiators with built-in valve sets are of many different types Manufacturers available on the market.

Buderus, Zehnder, Brötje, Kermi, Ferro, Schäfer, Dia Norm, Radson, VEHA, Dura Purmo etc.

Terminal blocks for the above radiator brands are made by some manufacturers offered.

Theodor Heimeier Metallwerke, Erwitte
FW Oventrop KG, Olsberg.

Deflectors for changing the flow direction for retrofitting are also in the Specialist shops available.

F.W. Oventrop KG, Olsberg Handbook 5/95, page 1.26.

For radiators with normal connections, flow at the top, return at the bottom, on the left or right side are made by different manufacturers radiator valves (thermostat valves) with reverse flow direction and through the specialist trade offered.

Theodor Heimeier Metallwerke, Erwitte
FW Oventrop KG Olsberg
MNG Metallwerke Neheim Goeke, Arnsberg Neheim
Danfoss GmbH Offenbach / Main.

In the case of the radiators with built-in valve set mentioned above, the Installation of valves with reverse flow direction not possible. Interchanged connections can only be changed with great effort.

On normal radiators, the radiator valve was replaced by a valve when the connection was reversed replaced with reverse flow direction.

All previously known options for the assembly errors of the interchanged connections usually had unpleasant consequences.

Eg with valve radiators
Open the floor or wall and change the pipe connections. Or use a deflection piece, for which the radiator had to be mounted higher by the length of the deflection piece. If a higher installation was not possible, the preliminary shut-off, which is usually required according to the tender, could be dispensed with and only the deflection piece installed instead of the connection block.

Eg with normal radiators
By replacing the radiator valves with valves with reverse flow direction, the return on the radiator was now permanently attached.

What now has the consequence that the heat now flowing in from below no longer in the radiator can cool down accordingly in order to transfer the heat content to the room to be heated, but immediately flows upwards and is not used by the return line at the top was transported away. The consequence of this (in the case of scarcely designed heating surfaces) was that desired room temperature could not be reached. Here was later the flow temperature increases.

Higher flow temperature = higher boiler temperature = higher flue gas temperature = higher exhaust gas losses = higher environmental pollution.

The faulty assembly was mostly only resolved after moving into the new apartment noticed the customer (client) and turned himself through striking or Rattling noises in the radiators and through sound transmission throughout Plant. This was to be regarded as a defect on the part of the client and became immediate indicated as such at the assembly company. (Final payment refused).

Radiator valves require a certain flow direction of the heating medium flowing through to ensure proper functioning. With reversed forward and return leads this leads to unpleasant beating noises in the radiator or through sound transmission in the entire heating system. It has also happened several times that the water current that strikes the valve disk in the opposite direction of flow from this has torn or the sealing element has been damaged.

Such damage is liable to a reduced function or a total failure of the Radiator valve result. Extensive exchange, repair or change work Valve radiators were also required on the pipe connections.

The invention specified in claim 1 is based on the problem of mixed up radiator connections immediately, without additional material, by a customer service technician to change without negative consequences.

This problem is caused by the features of the terminal block listed in claim 1 solved with already installed reverse function.

The advantages achieved with the invention are in particular that during assembly the radiator and the connections for flow and return no longer from the start it is determined where the flow and return are to be connected, it is only necessary that Flow and return are connected to a connection on the connection block. Jumps and bends to get the right connection are no longer necessary because it doesn't matter where the supply and return lines are connected. The connection block is any connection situation without additional material expenditure on the construction site adapt. This means a considerable ease of assembly and safety, since the connections are now properly connected in any case.

The problem of swapped radiator connections is with the installation of connection blocks with the reversal element a problem of the past.

An embodiment of the invention, here for valve radiators, is shown in the drawing and is described in more detail below.  

Show it:

Fig. 1 terminal block in front view

1 reversing element in normal position
2 connection grommet to the valve radiator
3 screw connection
4 ball shut-off
5 screw connection for flow and return (interchangeable)
6 fastening screws.

Fig. 2 reversing element front view,

Fig. 3 reversing element side view,

Fig. 4 reversal element cross section.

The embodiment shown in the drawing Fig. 1 is for the connection of compact valve radiators with connections for flow and return from below. The connection grommets ( 2 ) are sealed in the connection thread on the radiator. The connection block is now mounted on the screw connections ( 3 ) under the radiator. The pipe connections for flow and return are made at the screw connections ( 5 ). (Interchangeable connections). Corresponds to the connection method (position of the connections) of the pipelines forward and return, the connection diagram of the radiators the reversing element is left in the delivered condition. As in the drawing Fig. 1 ( 1 ) reversing element in the normal position.

If the position of the connections is reversed according to the connection diagram of the radiator, the reversing element is dismantled and turned by 90 ° to the right or left ( Fig. 2). If reversed radiator connections are only found after the heating system has been filled and commissioned, proceed as follows:

• 1. Close the ball shut-off ( 4 ).
• 2. Tap off the excess pressure of the radiator contents at the vent valve.
• 3. Close the radiator thermostatic valve.
• 4. Loosen the fastening screws ( 6 ) completely, do not remove the reversing element from the housing.
• 5. Turn the reversing element ( 1 ) 90 ° to the right or left.
• 6. Tighten the fastening screws ( 6 ) again.
• 7. Open the ball valves ( 4 ) and slowly fill the radiator.
• 8. Bleed the radiator afterwards.
• 9. Open the radiator thermostat valve.

The direction of flow is now reversed, the radiator or the radiator thermostatic valve is ready for use.

Claims (2)

1. Connection block for supply and return on radiators of a building heating system, characterized in that the connection block is equipped with a reversing element for reversing the flow direction. 2. Terminal block according to claim 1, characterized, that the flow direction change is with a 90 ° right or left rotation of the reversing element can be reached.