DD159806A1 - HOT WATER CIRCULATION THROUGH TUBE IN TUBE GUIDE - Google Patents

Abstract

The invention relates to the field of Sanitaertechnik in multi-storey and multi-storey buildings of housing, corporate and industrial construction. The aim of the invention is to provide a hot water distribution in pipe networks, which has a long service life, lower heat losses or energy expenditure and low material use in fulfillment of all functional requirements. The invention has the task of designing the circulation pipe performance so that the constant Zapfbereitschaft of hot water with minimum temperature is guaranteed with minimum water circulation. For the circulation piping a material without tendency to incrustation is used. The pipe diameter can thus be chosen so small that additional throttle elements are superfluous due to autogenous pressure loss of the pipeline. The circulation pipe has no loss of heat without the expense of thermal insulation. This is done according to the invention in that the circulation pipe is guided as an inner pipe in a hot water pipe. This inner tube is e.g. a thin plastic tube with low hot compressive strength.

Description

230891 2

Title of the invention. ,

Hot water circulation through pipe in pipe routing

Field of application of the invention

The invention relates to the field of sanitary engineering in multi-storey and multi-storey buildings of housing, social and industrial construction.

Characteristic of the known technical solutions It is known that the circulation of hot water takes place in parallel pipelines of different diameters but the same hot compressive strength, which are connected to a circuit.

As tubular materials galvanized or plastbeschichteter steel or copper are known.

Disadvantages of the current technical state are due to the fact that when using galvanized steel tube due to incrustation phenomena occurring the function of the circulation pipe only over a short period of time. is guaranteed. In the plastic coating of steel pipe or copper pipe, these incrustation phenomena do not occur. However, there is an extra effort in terms of material, manufacturing and installation of these pipelines required. Due to the large heat from giving surfaces of both pipes high heat losses occur, which can only be countered by high expenses for thermal insulation '.

As comparable technical solutions are known: DD 119 079 and DD 135 II3 single-stream district heating systems with full material consumption of the heating network water without return lines. ·.

DD 75 907, DE 22 9OO, DE 293 1606- supply and return line are installed vertically or parallel to each other firmly in an insulating and surrounded by a cladding. Invention application ViP 16 L / 23Q 591/8 vom 5.6.1981 represents a composite pipe for the transport of heat transfer media, such as hot water (t = 60 to 7O ⁰ G and t _ß = 30 to 40 ⁰ C)., The tube consists of two Disadvantages are: Necessary prefabrication of the pipes per se with a complex connection technique.

Object of the invention

It is the object of the invention, pipe networks for V / armwasserver-. To create a division, which correspond to all functional requirements with a long service life, reduced Y / armeverlusten or energy costs and reduced use of materials.

Essence of the invention

The invention has the task of designing the circulation pipe (2) so that at minimum .Wasserumlaufmenge the constant Z apfbere.it shank of hot water with minimum temp era door is guaranteed. For the circulation piping a material without incrustation tendency is used. The Redtrdurchmesser can thus be chosen so small that additional throttle elements due to the inherent pressure loss of the pipeline are superfluous. The circulation pipeline has no heat losses without expenditure for thermal insulation.

2 3089 1 2

According to the invention, this is done by guiding the circulation pipeline (2) in a hot water pipeline (1). This inner tube is z. B. is a thin "plastic tube with low hot compressive strength, such as PE pipe according to TGL 21581 · It is held at one end of the pipe, the hot water pipe (3) · sealing (4 ·) and connection (5) of the circulation pipe at the other end of the pipe z. B. by means of crimp,

Due to the special application simplifications in terms of inner tube holder and connection options are given. The holder of the inner tube is made once at the upper end of each Steigerohrleitung and can be used both before and after the installation of the jacket tube in the same, j

The laying of the inner pipe is done after mounting the jacket pipe (z, B. tube bundle) by inserting a flexible. Plastic pipe of required length. Laborious connection smuf fen, as they are necessary in the composite pipe prefabrication and assembly omitted. Likewise accounts for the connecting parts of the inner tube for individual consumers according to the principle of operation of the circulation pipe and thus the costly production of components with double nozzle, the only necessary connection point to the circulation manifold is feasible with a simple combined crimp and plug connection.

embodiment

FIG. 1 shows a hot water pipeline (1), such as z, B, used as a riser pipe in the industrial construction industry.

230891 2

The circulation of water within the water pipe is made possible by the circulation pipe (2) which is guided as an inner pipe and which, after assembly of the hot water pipe, is suitably pulled through from top to bottom. The holder (3), sealing (4 ·) and the connection (5) of the circulation pipeline takes place at the ends of the pipeline z. B, by means of crimp connection.

Claims (1)

230891 2 invention claim 1, hot water circulation through pipe in pipe routing characterized in that the circulation pipe (2) is guided as an inner pipe in the hot water pipe (1) and the material for the circulation pipe z, B, a plastic pipe with low hot compressive strength, which after assembly the hot water pipe is pulled through this and held at the respective pipe ends by guide (3) and the seal (4) including connection (5) is preferably carried out by crimping. «For this a sheet drawing -