DE6915148U - CONNECTING FITTINGS - Google Patents

Description

Otto Thiele G m b H. Heating, ventilation and piping construction

518o Wolfsburg

Daimler8tr. 4th

"Connection fitting · '

The innovation concerns a connection fitting for radiators τοη One-pipe heating systems, especially for high-pressure hot water heating systems.

For heating systems that are connected to a district heating network the heat transfer medium is fed in at around 12o ° C and at a pressure of up to 2o kg / cm. The commercially available directional control valves, with which low-pressure hot water heating systems can be designed as single-pipe heating systems «are such loads not grown, so that two-pipe heating systems can be found almost without exception in heating systems that are connected to the district heating network, which are more expensive to create than single-pipe heating systems, at least because of the greater amount of pipe work involved.

However, high-pressure hot water heating systems were also very successful be designed according to the one-pipe principle. For this purpose, only known and commercially available fittings and a well-known, commercially available shut-off valve put together in a sensible arrangement.

With this arrangement, the shut-off valve is initially

neither directly nor via a pipe bend so to the head space of the radiator connected that the second connection piece with its axis in perpendicular direction downwards. Is on the footwell of the radiator, if necessary with the interposition of a Pipe nipple, a pipe T-piece connected in such a way that the two mutually aligned nozzles with the one running in the perpendicular direction The nozzle of the valve run coaxially. The lower of these two nozzles on the pipe T-piece is used to connect the Return pipe of the heating system. The flow pipe is connected to a Connected pipe that opens above the pipe T-piece into a connecting pipe between the pipe T-piece and the valve.

To adjust the spread of the flow water is in the upper one Stub of the pipe T-piece, a pipe section with a small cross-section is used interchangeably. To avoid back circulation this Innenrohrstüok protrudes down to the Nozzle of the pipe T-piece leading out from the radiator footwell. The spread of the flow water is determined by the choice of the cross section of the inner pipe piece.

The connection fittings described in the illustrated Preassembled way and connected to the already laid pipes or radiators on the construction site.

Although this pre-assembly is expensive due to the relatively long assembly time due to the labor costs incurred, heating systems, this created by means of such fittings as one-pipe heating systems are nevertheless compared with considerable cost savings comparable heating systems, however, built according to the two-pipe principle. This advantage is however with larger quantities less.

In order not to impair the described advantages of the valve described by Montagekoeten, sioh marks the

initially mentioned fitting according to the innovation in that the pipe crossings as well as the supply lines for the supply water as cast parts are designed, the two parallel connection pieces for the flow and return pipes, a connection piece for the Connection with the radiator footwell as well as one with the return pipe connection piece has aligned RohranschluBstutzen for the connecting pipe leading to the valve, with one from the flow pipe connecting pipe outgoing first flow channel in the casting above the connecting piece leading to the radiator footwell into a second flow channel between the return pipe connection piece and the connection piece for the connecting pipe opens out, while the inner pipe piece is inserted into a junction point of the second flow channel.

The new valve leads to a significant additional cost reduction. If it is made so large that the largest possible flow cross-sections are given, then need for smaller pipes only have to be used with reducers for connection. You spreading is as before by replacing of the inner pipe section is set.

An embodiment of the new valve is shown in the drawing.

The figure shows an axial section through the casting.

Sa the construction of the new valve, with which a one-pipe heating system can be created without special directional control valves, is known only the casting shown in the figure to be described.

Sas casting 1 is shown in its position of use. It has a flow pipe connection piece 2, a return pipe connection

-A-

support 3 »one leading to the radiator foot, not shown Connection piece 4 »as well as a connection post 5» * on the to Connecting the connecting pipe (not shown) leading to the shut-off valve of the fitting is used. The connecting pipe becomes hard soldered in, while all other connecting pieces are 2, 3 »4 bit Threaded are

From the Vorlaufrohransohlußstutzen 2 to the connecting piece 5 runs a first approximately L-shaped flow channel 6. From the return pipe connection tube 3 leads an elongated second flow channel 7 to the aligned connection piece 5. The connection piece 4 opens into the second flow channel 7 below a constriction 8, which is equipped with a thread and can be replaced by an inner pipe section 9 to use. The inner cross-section of this Innenrohretükkes 9 determines. "The spread of the supply water.

The two flow channels 6 and 7 are in the associated Rohransohlußstutzen sack-like expanded.

1514

Claims (1)

1) Aneohlußarmatur for radiators of one-pipe heating systems, especially high-pressure hot water heaters, in which a shut-off valve is connected to the head space of the radiator and a pipe crossing is connected to the footwell, which is connected with a pipe connection socket with the return pipe of the heating system, with the other pipe connection socket with one to The connecting pipe leading to the valve is connected, into which the flow pipe opens out, with an exchangeable inner pipe piece being arranged in the pipe crossing, which extends downwards at least to the lower edge of the pipe connection piece leading to the radiator footwell, characterized in that the pipe crossing and the supply line for the flow water as Gussstüok (1) are formed, the two parallel connection pieces (2,3) for the flow and return pipe, a 3nschluSstutzen (4) for the connection with the radiator footwell and a pipe connection piece (5) aligned with the return pipe connection piece for the train V Entil leading connecting pipe, whereby a first flow pipe (6) in the cast piece above the connection pipe leading to the radiator footwell opens into a second flow passage (7) between the return pipe connection pipe and the connection pipe for the connection pipe, while the inner pipe piece (9) opens into a one-piece ^ yjelle (8) of the second flow channel is used. ^ 2) Faucet naoh claim 1 dadnroh characterized in that all flow channels (6,7) are widened saok-like immediately behind the associated pipe connection piece (2,5,4,5). 5) fitting according to claims 1 and / or 2, characterized. that the Rohransohlußstutzen (5) for the connecting pipe as a solder socket, all others are designed as screw sockets.