EP1562007B1 - Connection fitting - Google Patents

Abstract

Connection fitting for connecting at least one heating body to a heating circuit or heating system especially designed as a single-duct system comprises one switchable or controllable valve (1) connected to the heating circuit with a flow and return. The flow path of the heating medium from the heating circuit through the valve to the heating body and back is controlled by a tap cock (15). A bypass connection (35) is provided between the connections of the valve for the flow and return, i.e. a first connection (13) and a second connection (14). The bypass connection runs through the tap cock.

Description

The invention relates to a connection fitting according to the preamble of claim 1. Such a connection fitting is eg from document DE-N-9421996 known.

Connection fittings for connecting a radiator to a heating circuit are known in various designs.

Connection fittings, in particular valves directly connected to the heating circuit, which regulate the flow and return of heating medium to the radiator and back, usually have a fixed predetermined flow path for the flow and a fixed predetermined flow path for the return. This has the disadvantage that you can mount the valve when mounting on the on-site usually already existing nozzle of the heating only pointing in a predetermined direction or would have to cross the nozzle. Otherwise, an advantageous flow through the radiator would not exist.

To solve this problem, there are valves in which the flow paths for the flow and for the return can be mutually changed or merged so that the valve can be mounted on the nozzles of the heating circuit and only then the flow paths of the valve are set ,

However, this adjustment of the direction of flow must disadvantageously take place during the connection assembly work and can not be changed or changed during operation or only with great effort.

To overcome this disadvantage, valves are known with which an adjustment or a change of the flow direction is adjustable during operation.

Also valves are known in which a part of the heating medium flowing into the valve flows through a specially designed, separately running channel directly and without detour via the radiator from the supply pipe to the return pipe and thus back into the heating circuit. This ensures that even when the valve position is blocked there is a constant heating medium flow and the heating circuit remains uninterrupted.

An advantageous embodiment of a connection fitting of the type mentioned above is characterized in that a structurally simple way of regulating the flow or the flow paths during operation and effective shut-off of the radiator is made possible. According to the invention this is achieved in a connection fitting of the type mentioned by the characterizing features of claim 1.

The proposed measures make it possible to make the valve very small and compact. In addition, there are advantages through a simplified manufacturing process or by weight and material savings. The control options are also improved.

In this context, it is particularly advantageous if the features of claim 2 are provided. By forming such a bypass opening a defined path for the heating medium is given. By concentrating or merging all the flow paths at the crossover point of the chick, it is easier to search for the defect even during repairs, or some problems can be quickly remedied by replacing the chick.

The inventive features of claim 3, a structurally simple method is described in order to arrange the radiator side outputs or inputs of the valve to save space.

The features of claim 4 ensure that the flow paths for the heating medium are easily adjustable in an advantageous manner. As a result, the inflow from the heating medium to the radiator can also be prevented and a repair or replacement of the radiator is possible without affecting the heating circuit.

In a structurally simple and stable manner, this is ensured by a chick having the features of claim 5.

The features of claim 6 ensure that both the heating circuit and the radiator are optimally flowed through with warm heating medium and that the radiators of the entire heating circuit work effectively.

So that the heating medium from the valve can flow into the radiator, it is advantageous if the features of claim 7 are given. This also ensures that the return from the radiator in the heating circuit is performed separately from the flow and there is no mixing of the streams.

For the simplest possible, versatile and uncomplicated assembly, it is advantageous to provide the features of claim 8, since thus the valve can be easily mounted on any side of the radiator or the connection can be made to the heating circuit in any radial direction.

For the same reason, it is advantageous if the features of claim 10 are given, since in this way the valve or the chick are adjustable or adjustable from both sides.

For controlling the heating power, it is advantageous if, according to claim 10, a regulating unit is provided which is arranged in an ergonomically correct position.

Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.

• Fig. 1 zeigt eine erfindungsgemäße Anschlussarmatur inklusive dem Heizkörper mit einer thermostatischen Reguliereinheit.
• Fig. 2 zeigt eine erfindungsgemäße Anschlussarmatur inklusive dem Heizkörper mit einer manuellen Reguliereinheit.
• Fig. 3a, 3b und 3c zeigen eine Schnittansicht des Ventils von oben gemäß der Schnittlinie C-C, eine Schnittansicht des Ventils von der Seite und eine Seitenansicht des Ventils in der Durchflussstellung 1.
• Fig. 4a, 4b und 4c zeigen eine Schnittansicht des Ventils von oben gemäß der Schnittlinie C-C, eine Schnittansicht des Ventils von der Seite und eine Seitenansicht des Ventils in der Durchflussstellung 2.
• Fig. 5a, 5b und 5c zeigen eine Schnittansicht des Ventils von oben gemäß der Schnittlinie C-C, eine Schnittansicht des Ventils von der Seite und eine Seitenansicht des Ventils in Sperrstellung.
• Fig. 6a und 6b zeigen eine Schnittansicht des T-Stücks von der Seite gemäß der Schnittlinie B-B und eine Ansicht des T-Stücks von oben.
• Fig. 7a und 7b zeigen eine Schnittansicht des mit dem T-Stück verbundenen Ventils von der Seite gemäß der Schnittlinie A-A und eine Ansicht des mit dem T-Stück verbundenen Ventils von oben.
• Fig. 8a zeigt das Küken des Ventils.
• Fig. 8b zeigt einen Schnitt durch das Küken.

The invention is illustrated schematically by means of embodiments in the drawings and will be described below with reference to the drawings, for example.

• Fig. 1 shows a connection fitting according to the invention including the radiator with a thermostatic control unit.
• Fig. 2 shows a connection fitting according to the invention including the radiator with a manual control unit.
• Fig. 3a, 3b and 3c show a sectional view of the valve from above according to the section line CC, a sectional view of the valve from the side and a side view of the valve in the flow position. 1
• Fig. 4a, 4b and 4c show a sectional view of the valve from above according to the section line CC, a sectional view of the valve from the side and a side view of the valve in the flow position. 2
• Fig. 5a, 5b and 5c show a sectional view of the valve from above according to the section line CC, a sectional view of the valve from the side and a side view of the valve in the blocking position.
• Fig. 6a and 6b show a sectional view of the tee from the side along the section line BB and a view of the tee from above.
• Fig. 7a and 7b show a sectional view of the valve connected to the tee from the side along the section line AA and a view of the valve connected to the tee valve from above.
• Fig. 8a shows the chick of the valve.
• Fig. 8b shows a section through the chick.

Out Fig. 1 and Fig. 2 It can be seen how the individual components of the connection fitting according to the invention interact. The connection fitting comprises a valve 1 and may optionally, as described below, in addition to the valve 1 include further components. The valve 1 is connectable with its two terminals 13, 14 to a, in particular designed as a single-pipe system, heating circuit and connected via a further connection with a T-piece 2. The radiator 9 itself has two connections, namely a radiator flow connection 8 and a Radiator return port 7. Between the T-piece 2 and the radiator flow connection 8, in particular on a connecting pipe 4, a regulating unit 3a, 3b is provided, which is either thermostatically regulated or manually regulated. The regulating unit 3a, 3b can also be provided directly on the valve 1 or in the region of the T-piece 2.

For flow reasons and to produce in the radiator 9 an optimal thermal distribution of the heating medium, the radiator flow connection 8 is located at the upper end of the radiator 9 and the heating medium is via the connecting pipe 4 and the regulating unit 3a, 3b via this radiator flow connection 8 into the radiator 9 fed. The cooled heating medium leaves the radiator 9 via the radiator return connection 7 provided at the lower end of the radiator and flows via the T-piece 2 back into the heating circuit via the valve 1.

It is also possible that the connection fitting only consists of or is formed from the valve 1 connected directly to the radiator 9 via corresponding connecting piece.

A more detailed illustration of the flow paths is given in the following drawings.

The Fig. 3 . 4 and 5 The valve 1 has two heating circuit side connections, namely a first port 13 and a second port 14 through which the heating medium from the heating circuit to the valve 1 and subsequently into the radiator 9 and from the radiator 9 via the Valve back into the heating circuit can flow. Which of the two connections 13, 14 is to serve as a supply connection is selectable.

In the central region of the valve 1 there is a substantially cylindrical plug 15, which is rotatably mounted with respect to its central longitudinal or cylindrical axis 40 in a, preferably centrally located, recess or bore of the valve 1. The plug 15 controls the flow paths of the heating medium from the heating circuit through the valve 1 to the radiator 9 and back or releases or blocks them.

In Fig. 8a or 8b, the chick 15 is shown in detail. The chick 15 has two mutually opposite recesses or recesses 400 of the cylindrical basic shape. Due to these recesses 400, which need not extend over the entire height range of the plug 15, a partition wall 30 is formed by the remaining cylinder body. As a result, the plug 15 has two diametrically opposite, in particular circular, sealing surfaces 42 on, takes place at the predetermined positions of the plug 15 relative to the flow paths, in particular in a locking position 0 described in more detail below, a shutoff of the flow paths or in the housing partitions of the valve 1 formed flow openings. In addition, two diametrically opposed, in particular convexly curved, guide surfaces 43 are formed by the recesses 400, through which the flow paths are formed or defined or limited and deflected.

In the chick 15 at least one bypass opening 17 is provided, which in particular has a cylindrical basic shape, and whose central axis 50 extends substantially perpendicular to the central longitudinal axis 40 of the valve 1. Through this bypass opening 17, an open bypass connection 35 is provided, which connects the first connection 13 to the second connection 14 in a fluid-conducting or flow-related manner, almost independently of the position or position of the plug 15.

The size of the bypass opening 17 will be described later.

The valve 1 has in its with respect to the terminals 13 and 14 averted area provided for the heating flow 20 output channel 19, can flow through the heating medium through a, in particular laterally provided on the valve, outlet from the valve 1 to the radiator 9 out. In addition, the valve 1 has a, in particular tubular, provided for the heating return 18 input channel 16, through the heating medium from the radiator 9 in the valve 1, in one, in particular helical or spindle-shaped wound, connecting channel 48, is fed. This connection channel 48 adjoining the plug 15 has a fluid-conducting connection to the second connection 14 and can be regarded as a partial region of the second connection 14. From there, the heating medium returns to the heating circuit.

The two channels 16 and 19 are in the embodiment according to the invention advantageously constructively designed so that the input channel 16 is at least partially in the output channel 19 and is at least partially enclosed by this. Thereby, the medium through the output channel 19, namely around the input channel 16 around, flow out of the valve 1 and the heating return 18 inside this construction, namely in the input channel 16 spatially separated from the heating flow 20, flow back. Such a design is particularly space-saving. It is advantageous if the output channel and the input channel 16 have a common central axis 45.

In the Fig. 3c . 4c and 5c the different positions or positions of the chick 15 are indicated. In a first flow position (I), by a rotation of the plug 15 is reached from the zero or locking position (0), starting in the clockwise direction, the chick 15 is in the present embodiment so that the following flow paths are permitted: The heating medium passes through the acting as a supply port first port 13 on the chick 15th The heating return 18 passes through the input channel 16 back into the valve 1 and leaves via the plug 15 and the connecting channel 48 via the second port 14, the valve 1 and flows back into the heating circuit. In addition, a constant Heizfluidstrom flows through the bypass connection 35, from the first port 13 through the bypass port 17 via the second port 14 back to the heating circuit.

Will the chick according to Fig. 4c Starting from the zero or blocking position (0), rotated counter-clockwise to a second flow position (II), the result is the following, complementary to the above flow characteristic: The second port 14 now acts as a flow connection, by the heating medium from the heating circuit flows into the valve 1. From there, the heating medium passes through the chick 15 and partially via the connecting channel 48 in the outlet channel 19 and leaves as heating flow 20, the valve 1 in the direction of radiator 9. The heating return 18 passes back via the input channel 16 into the valve 1 and leaves the valve. 1 In addition, a constant Heizfluidstrom flows through the bypass connection 35, from the second port 14 via parts of the connecting channel 48 through the bypass port 17 through the first port 13 back to the heating circuit.

The bypass opening 17 is dimensioned such that in the first flow position I and in the second flow position II 40 to 70%, in particular 45 to 60%, preferably about 50%, of the heating medium flowing into the valve 1 through one of the ports 13 or 14 through the Bypass opening 17 flows back into the heating circuit without entering the radiator 9. By this division of the Heizfluidstromes optimal distribution of the heat stored in the heating medium is ensured on the radiator of the heating circuit and the heating circuit itself. The dimensioning of the bypass opening 17 is dependent on the size of the radiator, the number of connected to the heating circuit radiator and other factors and can be interpreted accordingly, knowing these parameters, i. Different chicks 15 with correspondingly large bypass openings 17 can be inserted into the radiators 9.

Accordingly, the dimensions of the bypass openings 17 in the individual radiators 9 of a single heating circuit can differ in such a way that For example, for the first radiator of a monotube heating circuit, a chick 15 is selected with a larger bypass opening 17 than for the last or the more rear connected radiator 9 of the heating circuit, in which a smaller bypass opening 17 may be necessary to this radiator 9 still enough to be able to supply thermal energy.

The Heizfluidströme to the radiator 9 back and forth and the Heizfluidstrom through the bypass opening 17 through unite in the region of the plug 15 with each other.

It should be noted that the heating medium should always leave the valve 1 through the outlet channel 19 as a heating flow 20 in the direction of radiator 9 and should always flow back as a heating return 18 from the radiator 9 via the inlet channel 16 into the valve 1. This ensures that the heating medium always flows into the same connection of the heating element 9, namely advantageously the radiator feed connection 8, independently of the direction of flow in the heating circuit. Although the inflow into the radiator 9 could be reversed, but this is unfavorable for heating considerations, since the heating power of the radiator is reduced. The flow direction in the first port 13 or in the second port 14 changes depending on the position of the plug 15. This ensures that the valve 1 can be placed on the on-site usually preassembled nozzle, regardless of the predetermined in the heating circuit flow direction of the heating medium. That is, the valves 1 can be mounted without knowledge or consideration of the flow direction without having to cross over pipes.

In the blocking position (0), the plug 15 is positioned so that the sealing surfaces 40 obstruct the entrance to the outlet channel 19 and the connection between the inlet channel 16 and the connections 13 and 14. That is, the fluidic connection of the first terminal 13 and the second terminal 14 with the output channel 19 and with the input channel 16 is no longer given. Only the first port 13, which may function as either a flow or return port, is connected through the bypass port 17 and portions of the communication passage 48 to the second port 14, which then functions as a return port or a flow port. the entire heating medium flow flows through the bypass opening 17th

By this possibility of blocking the heating medium supply to the radiator 9 can be completely suppressed and the radiator 9 can be removed or replaced.

On the housing 47 of the valve 1 are indicia in the form of arrows 23, 24 are provided, which indicate the direction of the flow and after which the position of the plug 15 can be made.

The connection fitting further comprises in the embodiment according to the invention a T-piece 2, which is fluidically connected to the outlet channel 19 and the inlet channel 16 of the valve 1. This T-piece 2 ensures that the heat flow from the valve 1 spatially separated from the heating return 18 20 is passed to the radiator flow connection 8 of the radiator and that the heating return 18 passes separately into the inlet channel 16 of the valve 1. For this purpose, a tubular element 12 is provided in the T-piece 2, which in particular has the same diameter as the input channel 16 and is in direct flow communication therewith or, in particular tight, connected or connectable to this. This tubular element 12 can advantageously be designed such that it projects at least partially through the radiator return connection 7 of the heating element 9 into the heating element 9.

According to Fig. 7a and 7b The tube element 12, the inlet channel 16 and the outlet channel 19 have a common central axis 45. This ensures that the valve 1 relative to or relative to the rigidly arranged in this embodiment T-piece 2 about this central axis 45 is rotatable or pivotable. This is important during installation or during assembly, since it is unimportant by this structural design, whether the valve 1 and the T-piece 2 are located to the left or right of the radiator 9. The pivoting of the valve 1 relative to the T-piece 2 and the radiator 9 is also advantageous for the reason that thereby the connection to the heating circuit perpendicular to the axis 45 in any radial directions or angular position, preferably down into the ground or after behind the wall or at an angle, can take place or a connection to projecting from the wall on-site connections can easily be made.

Another factor that facilitates installation is the fact that the chick 15 and / or the T-piece 2 are substantially symmetrical with respect to a center plane 55 of the valve 1 perpendicular to the central longitudinal or cylindrical axis 40 of the chick. As a result, the chick 15 is accessible from both sides of the center plane 55 and can also be switched or adjusted from both sides. This ensures maximum connection variability.

Claims (10)

1. Connection fitting for connecting at least one heating element (9) to a heating circulation of a heating installation, being in particular formed as a single duct system, which comprises or consists of a valve (1) connected to said heating circulation having an inflow and a return flow and being able to be changed over or controlled, the passage ways of a heating medium from the heating circulation, through said valve (1), to the heating element (9) and back again being regulated by a substantially cylindrical stopcock (15), which may be turned with respect to its central longitudinal or cylinder axis (40), and which mutually shuts or opens said passage ways in dependence upon its position, wherein a bypass connection (35) being given between connection means of the valve (1) at the side of the heating circulation and provided for said inflow and said return flow from the or into the heating circulation, i.e. first connection means (13) and second connection means (14), said bypass connection (35) extending through said stopcock (15), characterised in that the turning axis or said longitudinal or cylinder axis (40) of said stopcock (15) is perpendicular to a plane, which is formed by the central axes of said first connection means (13) and said second connection means (14).
2. Connection fitting according to claim 1, characterised in that at least one defined, particularly cylindrical, bypass opening (17) is formed in said stopcock (15), particularly in a partition (30) formed in said stopcock (15) by clearances (400), the central axis (50) of which extending in an advantageous manner substantially perpendicularly to said longitudinal or cylinder axis (40) of said stopcock (15), said bypass connection (35) passing through said bypass opening (17).
3. Connection fitting according to claim 1 or 2, characterised in that said valve (1) comprises an output channel (19) at the side of said heating element, through which heating medium from said heating circulation reaches said heating element (9), and an input channel (16) at the side of said heating element, through which said heating medium from said heating element (9) returns to said heating circulation, said input channel (16), at least in part, being situated within said output channel (19) or is surrounded by it at least in part, and that said output channel (19) and said input channel (16) optionally have a central axis (45) in common .
4. Connection fitting according to claim 2 or 3, characterised in that

   - said stopcock (15) in said valve (1) has at least one first position of passage (I), wherein said first connection means (13), having the function of an inflow connection, is connected in a fluid conductive or flow technical manner to said output channel (19), while said second connection means (14), having the function of a return flow connection, is connected in a fluid conductive or flow technical manner to said input channel (16), said first connection means (13) being directly connected in a fluid conductive or flow technical manner to said second connection means (14) via said bypass opening (17),

   - that said stopcock (15) in said valve (1) has at least one second, complementary position of passage (II), wherein said second connection means (14), having the function of the inflow connection, is connected in a fluid conductive or flow technical manner to said output channel (19), while said first connection means (13), having the function of the return flow connection, is connected in a fluid conductive or flow technical manner to said input channel (16), said first connection means (13) being directly connected in a fluid conductive or flow technical manner to said second connection means (14) via said bypass opening (17),

   - and that said stopcock (15) in said valve (1) has at least one blocking position (0), wherein the fluid conductive or flow technical connection of said first connection means (13) and said second connection means (14) to said output channel (19) as well as to said input channel (16) are shut, and only said first connection means (13) and said second connection means (14) are interconnected in a fluid conductive or flow technical manner via said bypass opening (17).
5. Connection fitting according to claim 4, characterised in that said stopcock (15) comprises two diametrically opposite sealing surfaces (42) by which shutting the passage ways is effected, particularly in said blocking position (0), and that said stopcock (15) comprises two diametrically opposite guiding surfaces (43), particularly vaulted in a convex manner, which join said sealing surfaces (42), particularly formed in a circular shape, by which, particularly in said first position of passage (I) and in said second position of passage (II), said passage ways are formed or defined or delimited.
6. Connection fitting according to claim 4, characterised in that said bypass opening (17) is dimensioned in a manner so that in said first position of passage (I) and in said second position of passage (II) 40 to 70%, particularly 45 to 60%, preferably about 50%, of the heating medium, streaming into said valve (1), flows through said bypass opening (17).
7. Connection fitting according to any of claims 3 to 6, characterised in that a T-piece (2), which is connected to said output channel (19) and said input channel (16) of said valve (1), is provided, by which said heating medium may be fed as an inflow into said heating element (9), separated from said return flow, out of said heating element (9), one of its ends being connected to a radiator inflow connection (8) of said heating element (9), while its other end is connected to a radiator return flow connection (7) of said heating element (9), in particular via a tubular element (12) provided within said T-piece, which is in direct flow connection to said input channel (16) of said valve (1) or may be connected to it, and projects preferably at least with a partial portion into said heating element (9), preferably within the region of said radiator return flow connection (7).
8. Connection fitting according to claim 7, characterised in that said tubular element (12), said input channel (16) and said output channel (19) have a central axis (45) in common, and that said valve (1) may be rotated or pivoted about this axis (45) relative to said T-piece (2) in order to ensure a connection of said valve (1) to said heating circulation in any angular position.
9. Connection fitting according to claim 7 to 8, characterised in that said stopcock (15) and/or said T-piece (2) are substantially symmetrical with respect to a the valve's (1) middle plane (55), which extends perpendicularly to said central longitudinal or cylinder axis (40) of said stopcock (15), or that said stopcock (15) is accessible and able to be changed over or to be adjusted from both sides of said middle plane (55) or from the exterior of a housing (47), and/or that a, particularly manually or thermostatically controlled, regulating unit (3a, 3b) is provided, particularly between said T-piece (2) and said radiator inflow connection (8), for steering or controlling the heating power.
10. Connection fitting according to any of claims 2 to 9, characterised in that the rotational axis of said stopcock (15) is between the longitudinal axes of said first connection means (13) and said second connection means (14), and/or that said bypass opening (17) is centrally formed within said stopcock (15).

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