WO2010111998A2 - Wastewater pipe having a fresh water guide device and heat exchanger - Google Patents

Abstract

In order to further develop wastewater pipes having fresh water guide devices for transferring thermal energy between wastewater and fresh water such that the thermal energy can be transferred more effectively between the wastewater and the fresh water, the invention proposes a wastewater pipe (2) having a fresh water guide device (3) for transferring thermal energy between the wastewater and fresh water, wherein the wastewater pipe and the fresh water guide device have a common separating wall (12), wherein the fresh water is guided steadily counter to a wastewater flow direction (8) of the wastewater from a fresh water supply (9) to a fresh water drain (10), and wherein the wastewater pipe is characterized by means (14) for deflecting the fresh water transversely to the wastewater flow direction, whereby the fresh water is also guided transversely to the wastewater flow direction with a main counter flow direction. This leads to a meandering or helical course of the main flow direction around the wastewater flow direction.

Description

 Wastewater pipe with a fresh water and heat exchanger

[01] The invention relates on the one hand to a sewage pipe with a fresh water guide device for transferring heat energy between a sewage and a fresh water, the sewage pipe and the fresh water guide having a common partition, and the fresh water flowing steadily from a fresh water inlet to a fresh water outlet counter to a sewage flow direction the wastewater is guided. On the other hand, the invention relates to a sewer pipe with a fresh water device for transferring heat energy between a wastewater and a fresh water, wherein the sewer pipe and the Frischwasserleiteinrichtung have a common partition. Moreover, the invention relates to a heat exchanger with such a sewer pipe.

Generic sewage pipes or heat exchangers are well known from the prior art and are intended to deliver heat energy of the waste water to a fresh water, whereby the fresh water is preheated, so that then less heating energy must be expended to heat the fresh water.

For example, German Utility Model DE 20 2006 012 197 U1 discloses cryogenic water preheating during showering via wastewater, in which the waste water is passed through a heat exchanger after leaving a shower tray. In this case, a cold water line within the heat exchanger along a waste water flow direction of a sewer pipe back and forth, wherein the guided through the heat exchanger so fresh water can be preheated by the warmer wastewater. The disadvantage here, however, is that the fresh water line is guided not only against the waste water flow direction but also in the direction of the waste water flow direction, since optimal heat transfer between two media usually, can only be achieved in the counterflow principle. In this respect, the heat exchanger can not be used optimally effectively. In addition, the heat exchanger is formed relatively thick-walled, in particular in the region of the heat transfer between the wastewater and the fresh water, so that a transfer of heat energy can be hindered by this. [0006] DE 10 2004 053 996 A1 discloses a heat exchange device for waste water, in which a fresh water line runs in thermal contact with the outside of the waste water pipe, the fresh water between a fresh water inlet and a fresh water outlet being repeatedly in relation to the water Wastewater flow direction is guided back and forth to thereby achieve a heat energy transfer from the wastewater to the fresh water out. The fresh water supply is formed by means of guide rails, which are arranged between the sewer pipe and an outer wall of the fresh water line. Between the sewer pipe and the outer wall of the fresh water pipe only a small cavity of about 2 mm thickness is provided. This is to ensure that the fresh water can still be preheated well even with lower heat energy of the wastewater. However, the small cross section of the shallow fresh water line may be detrimental to a larger volume of fresh water.

[05] A sewage pipeline with a heat exchanger for sanitary facilities is also known from the further publication DE 11 2005 000 226 T5, in which a heat exchanger element of a heat exchanger is inserted into a sewage pipeline. In this case, the heat exchanger element consists essentially of wound copper tubes, which can be lapped directly by a wastewater, with thermal energy of the waste water to the wound copper tubes flowing fresh water can be discharged. The disadvantage here, however, is that the wastewater flows around a copper pipe spiral directly, so that it is necessary that the wastewater is largely free of impurities. Otherwise there is a high risk of contamination, which permanently adversely affects the performance of the heat exchanger. In this respect, a pre-cleaning of the wastewater is required, whereby the structural complexity for operating the heat exchanger is unfavorably high

It is an object of the present invention to develop generic sewage pipes with a Frischwasserzuleiteinrichtung such that a transition of heat energy between a wastewater and fresh water can be done much more effectively than previously possible.

[07] The object of the invention is achieved by a sewage pipe with a fresh water device for transferring heat energy between a sewage and a fresh water, in which the sewage pipe and the fresh water device form a common sewage pipe. having the same partition, wherein the fresh water is continuously led from a fresh water inlet to a fresh water drain against a waste water flow direction of the waste water, and means for deflecting the fresh water are provided transversely to the waste water flow direction, so that the fresh water is also guided with a counterflow direction across the waste water flow direction.

[08] Advantageously, it is possible with such deflection, the fresh water in the transverse direction to the wastewater flow direction preferably repeatedly divert, thereby achieving that the fresh water can dwell much longer in the Frischwasserleiteinrichtung the sewer pipe in its steady promotion in the opposite direction to the waste water flow direction. In this respect, the heat energy of the wastewater can be given much longer and thus better to the fresh water which flows through the Frischwasserleiteinrichtung the sewer pipe.

Another important advantage of the present sewage pipe over the known sewage pipes of the prior art is the fact that the fresh water is guided despite the deflection steadily in the counterflow to the waste water flow direction, since in this Gegenstromungsprinzip between the wastewater and the fresh water a Heat energy transfer is particularly advantageous. If the fresh water is now diverted in the direction of counterflow across the direction of the waste water flow by means of the deflection means, the residence time of the fresh water on the way through the fresh water conducting device is lengthened, whereby the effectiveness of the thermal energy transmission is again substantially increased.

[10] The term "continuous" in this case describes that the fresh water is always passed in a flow direction, which is directed substantially opposite to the direction of waste water flow.

[11] The term "sewage pipe" here describes any sewage device through which wastewater can be discharged into a sewage system or the like, preferably a sewage pipe, which can be easily integrated into a sewage pipe of a sanitary facility of a building The present wastewater pipe ideally includes suitable connection flanges or connection sleeves, in order to make it easy to fit a commercial one Sewer pipe, about the size of DN 50 or DN 100 or the like to connect.

The relevant Frischwasserleiteinrichtung can be provided here in a variety of configurations. Ideally, the fresh water guiding device has a tubular housing which at least partially surrounds the present sewage pipe.

For a particularly effective transmission of existing in a wastewater heat energy to a fresh water, it is advantageous if the sewer pipe and the Frischwasserleiteinrichtung have a common partition. Such a common partition wall can be structurally particularly simply represented by the existing pipe wall of the sewage pipe, wherein this sewage pipe wall at the same time forms the inner wall of the present fresh water guide device.

[14] Furthermore, the object of the invention is achieved by a sewage pipe with a Frischwasserleiteinrichtung for transferring heat energy between a wastewater and a fresh water, wherein the sewage pipe and the Frischwasserleiteinrichtung have a common partition, are provided in which means for consolidating the common partition wall.

Advantageously, the common partition can be made particularly thin-walled, if it can be additionally consolidated or stabilized by such strengthening means. As a result, the effectiveness of the heat energy transition between see the wastewater and the fresh water can be significantly increased.

In addition, the strengthening means are particularly advantageous in view of the prevailing higher pressure conditions within the Frischwasserleiteinrichtung, since often the fresh water with more than 8 bar, for example, a mixer fitting a shower or the like is supplied. These pressure conditions can have an adverse effect on the strength or on the stability of the common partition, especially when it comes in the Frischwasserleiteinrichtung in addition to pressure surges in the fresh water.

[17] It is understood that such consolidating means may be designed differently for the common partition. Examples of this will be explained below. The consolidating means between the sewage pipe wall and the outer housing wall of the fresh water guiding device are preferably provided, since the consolidating means in this case a fresh water flow channel of Frischwasserleiteinrichtung can be easily flowed around by the fresh water.

[18] In addition, stoppers arranged in the fresh water flow channel also do not adversely affect the outer mass of the present sewage pipe.

Although such strengthening agents could be provided within the sewer pipe, but this increases the risk that permanently accumulate there residues from the wastewater, whereby the flow of sewage through the sewer pipe could be obstructed at least in the long term.

Due to the use of the present consolidator for the common partition, it is now possible to design the common partition particularly thin-walled, whereby advantageously heat energy between the wastewater can be transmitted to the fresh water much more effective.

[21] Accordingly, a particularly preferred embodiment also provides that the common partition at least partially has a partition wall thickness of less than 1.5 mm or less than 1 mm, preferably less than 0.8 mm. Ideally, the wall thickness is 0.5 mm, as practical tests have shown that this heat transfer performance can be significantly increased.

It is understood that the partition wall thickness may depend in particular on the diameter of the sewer pipe, with thinner sewer pipes and thinner partition wall thicknesses can be realized.

[23] Specifically, in this context, it should be noted that the object of the invention is also achieved by a sewage pipe with a fresh water device for transferring heat energy between a wastewater and a fresh water, the sewage pipe and the Frischwasserleiteinrichtung have a common partition wall, and the common partition at least partially has a wall thickness of less than 1.5 mm or less than 1 mm, preferably less than 0.8 mm.

As already explained above, in the present case the effectiveness of the heat transfer can be substantially improved by means of a particularly thin common partition wall that even small amounts of heat energy of the wastewater can already be used advantageously for a freshwater pre-heating.

[25] In particular for applications in which it is possible to work with lower pressures with regard to the fresh water, such a small dividing wall thickness can also be used without the consolidants described above. In this respect, already developed a sewer pipe with a fresh water device comprising such a thin common partition known heat exchanger even without the other features of the invention advantageously.

It is understood that the object of the invention is in particular also achieved by a heat exchanger for transferring heat energy from a first medium to another medium, wherein the heat exchanger is through a sewer pipe according to one of the features and / or Characteristic combinations distinguished.

An advantageous embodiment variant of the present invention provides at least one forced transverse guidance device for fresh water, which is arranged within a fresh water guide channel of the fresh water guiding device. By means of the forced transverse guidance device, the fresh water can also be conducted transversely to the direction of the waste water flow in the direction of the flow of the latter.

[28] Such forced transverse guidance devices can structurally configure the present deflection means in a particularly simple manner.

If one of the forced transverse guidance devices cumulatively or alternatively designed such that at least one forced transverse guide device forms a Festigungsspant for the common partition, can be designed structurally simple means of such forced transverse guide means at the same time the present restraining means.

[30] A preferred embodiment provides that the deflecting means and / or the consolidating means comprises a fresh water baffle arranged substantially transversely to the direction of waste water flow, between the common dividing wall and a raw-type housing of the fresh water guide device.

[31] By means of such a fresh water baffle device, it can advantageously be achieved that the fresh water flows on its way through the fresh water guide device. is mixed through particularly well, so that in particular the risk of a liquid heat on the common partition wall can be significantly reduced.

It is understood that the fresh water baffle device can be designed in many ways in order to achieve such thorough mixing of the fresh water.

[33] Furthermore, it is advantageous if the deflecting means and / or the consolidating means form a meandering device, by means of which the fresh water is guided meandering through the fresh water guiding device with respect to the sewage flow direction, which offers a further possibility of extending the path of the fresh water through the fresh water guiding device ,

[34] Furthermore, it is possible that the fresh water is passed meandering through the Frischwasserleiteinrichtung. Such a meandering device can be structurally simple formed by suitably arranged fresh water baffles.

[35] A particularly preferred embodiment provides that the deflecting means and / or the fastening means are arranged helically around the sewage pipe. Advantageously, thereby the fresh water can be guided around on its way in the direction of counterflow around the entire outer surface of the sewage pipe, whereby the fresh water can travel a particularly long way within the fresh water device.

[36] A related embodiment also provides that the deflecting means and / or the fastening means are arranged as a single helical structure or as a multiple helical structure around the sewage pipe. This also makes it possible to provide a corresponding fresh water guide channel in a structurally simple manner.

[37] Furthermore, a particularly good stabilization in the common partition wall can be achieved if the deflection means and / or the production means comprise a circular frame or a ring frame. Such a ring or circular frame is arranged, for example, transversely to the wastewater flow direction within the fresh water guide device and can be provided, for example, by means of a forced transverse guide device.

[38] In particular, such a circular frame is designed such that it the fresh water flow channel between the common partition wall and the housing outer wall of the Frischwasserleiteinrichtung completely closes, it is advantageous if the deflection and / or consolidation means have a passage for fresh water.

[39] If at least one of the deflecting means and / or at least one of the consolidating means has a plurality of fresh water passage openings, which preferably comprise different diameters of different diameters, the flow behavior of the fresh water within the fresh water guiding device can additionally be advantageously influenced.

[40] It is particularly advantageous if a fresh water passage opening of the first deflecting means and / or first consolidating means and a further fresh water passage opening of adjacent further deflecting means and / or adjacent further tightening means are arranged mirror-inverted relative to one another. In particular, can be realized structurally simple here by a meandering fresh water through the fresh water guide.

[41] In addition, the effectiveness of heat energy transfer from the waste water to the fresh water can be increased if the deflection means and / or consolidation means comprise a heat conducting device. By means of such a heat conducting device, the heat energy from the wastewater can be transmitted much better to the fresh water, if, for example, the fresh water can flow around this heat conduction in directly.

[42] Thus, it is particularly advantageous if the deflecting means and / or the consolidating means directly form such a heat conducting device itself.

[43] A constructive very simple design can also be created in the present case if the forced transverse guidance device directly configures such a heat conducting device.

[44] In addition, a heat-conducting device can for example also be formed directly from the above-described single-helical structures or multiple helical structures and / or from a ring or circular frame. As a result, the structural complexity of the present sewage pipe can be further substantially reduced.

[45] A particularly good thermal energy transfer between the sewer pipe or the common partition wall and such a heat conduction device can be achieved if the heat conduction device is firmly bonded to the common partition wall. is orders. In particular, welding, soldering, pressing and / or adhesive connections are suitable for this purpose. In this case, the connection material is ideally to be chosen such that the best possible unimpeded thermal conductivity can be achieved.

[46] If the heat-conducting device also has a material thickness of less than 1.5 mm or less than 1 mm, heat energy transfer between the waste water and the fresh water can be made even more effective.

[47] A further increase in efficiency in terms of heat energy transfer between the waste water and the fresh water can be achieved by means for swirling the fresh water within the fresh water guide.

[48] For example, if the swirling means comprise a swirling device, by means of which the fresh water within the fresh water guiding device can be set in rotation, an exceptionally good mixing of warmer areas and colder areas of the fresh water can be ensured within a fresh water guiding channel.

[49] It is understood that the swirling means, and especially the swirling means, can be of various shapes. For example, such a swirl device is formed directly by the deflection means or by the fastening means. In this case, the swirl device structurally very easily can immediately comprise a forced transverse guide device which is arranged transversely within a fresh water channel of the fresh water guiding device.

[50] However, in cases where this is not possible or advantageous, it may be advantageous if the swirl device comprises a spiral formation which is arranged longitudinally within a fresh water guide channel of the fresh water guide device.

[51] Such a spiral structure can be produced, for example, structurally particularly simply by means of a spirally twisted spiral plate.

Furthermore, if the common partition of an outer wall of Frischwasserleiteinrichtung more than 5 mm, preferably more than 10 mm, spaced, a sufficiently large volume of fresh water can be passed through the Frischwasserleiteinrichtung, so that about always at a mixed water faucet fresh water sufficient amount can be made available. [53] It is understood that the sewage pipe and the Frischwasserleiteinrichtung can be arranged differently from each other. For example, the sewage pipe and a likewise tubular designed Frischwasserleiteinrichtung are arranged centrally to each other.

[54] Even from small amounts of wastewater heat energy can be transferred to the fresh water still advantageous if the sewer pipe is arranged concentrically within the Frischwasserleiteinrichtung. For example, most fresh water may be present in the lower third of the sewer pipe. For example, in this case, in a lower region of the lower third of the sewage pipe, there are two thirds of the amount of fresh water which is passed through the fresh water guide device.

[55] In particular, the above-described Zwangsquerführungseinrichtungen all present heat exchanger or the corresponding wastewater pipes with the respective Frischwasserleiteinrichtung increase advantageously not only the surface for transferring the heat energy between the wastewater and the fresh water, but they are particularly in the form of circular and / or Ringspante also statically positive on the entire structure of the heat exchanger, in particular on the sewer pipe, from. By the latter, the material thickness of the sewer pipe, especially in the area of Frischwasserleiteinrichtung be greatly reduced, whereby a much better heat transfer can be achieved. Specifically, by means of the forced transverse guide means, an advantageous honeycomb-like structure can be created within the fresh water guiding device. In this context, with a statically suitable additional connection of a positive guidance device with a housing of the fresh water guide, such as an outer tube, an even higher static load capacity of the heat exchanger can be achieved.

[56] Optionally, the forced transverse guidance devices can also be machined out of a blank by removal, boring, milling or similar processes, which then forms a corresponding wastewater pipe. It is advantageous in this case that an essentially homogeneous material structure is present which can additionally positively influence a thermal conductivity. This in turn can have a positive effect on the statics or on the reduction of the wall thickness of the drainpipe. In addition, the forced transverse guide devices can be particularly easily tapered radially outward can be made, whereby the heat transfer can be further improved, as already described above.

[57] In addition, it is advantageous in particular with regard to the forced-circulation devices described here if they are permeated with very fine fresh-water passages at least in some areas, but preferably only so far that a fresh-water main flow within the fresh-water conducting device is only minimally weakened, and only so far the statics with respect to a Kreisspants is not endangered. As a result, an even higher surface in the heat exchanger can be achieved. In addition, the finest fresh water passages can help to disrupt the inevitably forming heat film on the surface of the heat conductors. The circular ribs or heat fins can also be made by sheet metal plates. For example, by using metal strips, which can be brought to shape by bending or bends of the sheet, a manufacturing form can be selected by means of minimized material waste can be produced particularly cost.

[58] In particular for the present Frischwasserleitkanäle is preferably that a total flow area between the common partition and the outer housing of Frischwasserleiteinrichtung times a distance of the heat fins, ideally at least equal to or greater than a connection value of the fresh water of the heat exchanger. Introduced Zwischenwärmeleiteinrichtungen or intermediate ribs, which are flowed freely from the fresh water, can advantageously additionally increase the effectiveness. However, they have a rather minor importance for the statics of the inner tube rather than increasing the heat transfer. Therefore, their height can be made smaller, and indeed as far as still a significant heat flow takes place in them.

In order to be able to achieve an additional turbulence of the fresh water within the Frischwasserleit- device, it is also advantageous if walls which face the Frischwasserleitkanal or form him, are also provided with structuring. This particularly relates to the common partition wall and the tubular housing.

Further advantages, objects and features of the present invention will be explained with reference to the following description of the appended drawing, in which different heat exchangers or sewage pipes with fresh water guide devices are described by way of example Transfer of heat energy between a wastewater and a fresh water are shown.

[61] show:

1 schematically shows a view of a first embodiment of a heat exchanger with a wastewater pipe arranged concentrically in a fresh water guide device and with forced transverse flow devices each comprising a plurality of fresh water passage openings of different sizes;

FIG. 2 schematically shows a first cross-sectional view of the heat exchanger of FIG. 1 along section line A-A; FIG.

FIG. 3 is a schematic cross-sectional view of the heat exchanger of FIGS. 1 and 2 along section line B-B; FIG.

4 schematically shows a view of a further exemplary embodiment of a heat exchanger with a wastewater pipe arranged centrally in a fresh water guide device and with forced transverse guide devices each comprising a fresh water passage opening;

5 is a schematic view of a 90 ° rotated view of the heat exchanger of FIG. 4;

FIG. 6 shows schematically a first cross-sectional view of the heat exchanger from FIGS. 4 and 5 along the section line C-C;

FIG. 7 schematically shows a further cross-sectional view of the heat exchanger from FIGS. 4 to 6 along the section line D-D; FIG.

8 schematically shows a detailed view of a region of the heat exchanger from FIGS. 4 to 7 with an intermediate rib;

9 shows schematically a view of another exemplary embodiment with a wastewater pipe likewise centrally arranged in a fresh water guide device and with a volume flow distribution device;

Fig. 10 is a schematic cross-sectional view of the heat exchanger of Fig. 9; 11 is a schematic view of a single helical structure and of a double helical structure between a sewage pipe and a housing outer wall of a fresh water guiding device;

12 schematically shows a view of an additional exemplary embodiment of a heat exchanger with swirling devices comprising openings;

FIG. 13 schematically shows a detailed view of a rotation function of the swirl devices within a fresh water guide channel; FIG.

FIG. 14 schematically shows a first cross-sectional view of the heat exchanger from FIGS. 12 and 13 along the section line E-E;

FIG. 15 shows a schematic cross-sectional view of the heat exchanger from FIGS. 12 to 14 along the section line F-F; FIG.

16 shows schematically a further view of the heat exchanger from FIGS. 12 to 15;

17 is a schematic plan view of one of the swirling devices of the heat exchanger of FIGS. 12 to 16;

FIG. 18 schematically shows a cross section of one of the swirling devices of the heat exchanger from FIGS. 12 to 17; FIG. and

19 schematically shows an alternative swirl device in the form of a spiral plate.

[62] The heat exchanger 1 shown in FIG. 1 consists essentially of a sewage pipe 2 with a fresh water-conducting device 3, wherein the sewage pipe 2 in this heat exchanger 1 is arranged concentrically within the fresh-water-conducting device 3.

[63] The Frischwasserleiteinrichtung 3 is equipped in this first embodiment with a tubular housing 4. In this respect, the sewage pipe 2 is arranged substantially approximately two-thirds of its diameter above a horizontal center plane 5 of the heat exchanger 1.

[64] In addition, the sewage pipe 2 is slightly inclined relative to this horizontal center plane 5 of the heat exchanger 1 and thus to the fresh water guide 3. order, so that a wastewater always flows from an inlet region 6 of the sewer pipe 2 to a discharge region 7 of the sewer pipe 2, provided that the heat exchanger 1 is properly installed horizontally aligned. Thus, a wastewater flow direction 8, which is directed from the inlet region 6 to the outlet region 7 through the sewage pipe 2, always results at the heat exchanger 1. For this purpose, it is already sufficient if the sewage pipe 2 with respect to the horizontal center plane 5 is approximately inclined by 1 degree (not explicitly drawn).

[65] While the inlet region 6 and the outlet region 7 of the sewage pipe 2 are provided substantially frontally on the heat exchanger 1, a corresponding fresh water inlet 9 and a corresponding fresh water outlet 10 of the fresh water device 3 are located laterally on the heat exchanger 1. Insofern, the fresh water with a Main counterflow 11 passed through the fresh water 3 and through the heat exchanger 1, wherein the main counterflow 11 of the waste water flow direction 8 is opposite.

[66] Thus, the present heat exchanger 1 operates according to the counter-flow principle, whereby a particularly high efficiency of heat energy transfer from the wastewater to the fresh water can be achieved. Here, it is assumed that the waste water, which comes for example from a shower, is warmer than the fresh water, which is passed through the Frischwasserleiteinrichtung 3 through about a mixer tap (not shown here), for example, the above-mentioned shower device.

[67] Furthermore, the heat exchanger 1 is characterized in that the waste water pipe 2 and fresh water 3 at least in the area of Frischwasserleiteinrichtung 3 has a common partition 12, so that the wastewater within the sewer pipe 2 and the fresh water within the fresh water 3 only this common partition 12 are separated from each other. As a result, heat energy transfer can take place directly only through the common partition wall 12, as a result of which the heat exchanger 1 once again experiences an increase in efficiency.

[68] In addition, the present heat exchanger 1 is characterized in a particularly advantageous manner in that the fresh water guiding device 3 has a plurality of forced transverse guidance devices 13 in the form of deflecting means 14, which supply the fresh water in particular. deflect special transversely to the wastewater flow direction 8 within the fresh water 3.

In this first exemplary embodiment of the heat exchanger 1, the forced crossflow devices 13 and the deflecting means 14 are formed as baffles 15 with fresh water passage openings 16 (see in particular FIGS. 2 and 3), so that along the horizontal center plane 5 a meandering fresh water guide channel 17 results the way of fresh water through the Frischwasserleiteinrichtung 3 through substantially in the main direction of counterflow 11 extended.

In this respect, the fresh water guided through the fresh water guide device 3 or through the fresh water guide channel 17 can remain in contact with the common partition wall 12 much longer. Due to this, heat energy transfer from the waste water to the fresh water is further improved.

[71] In order to realize such a meandering Frischwasserleitkanal 17 structurally particularly simple on the heat exchanger 1, the fresh water passage openings 16 of two immediately adjacent baffles 15 are arranged mirror-inverted with respect to a vertical center plane 18. Such an arrangement can be seen particularly well with respect to Figures 2 and 3, wherein according to the illustration of Figure 2, a baffle plate 15 along the section line A-A and another baffle plate 15 are shown according to the figure along the section line B-B. The representations according to FIGS. 2 and 3 thus make it possible, in each case, to look at baffles 15 arranged directly behind one another within the fresh water guide device 3, viewed in the direction of waste water flow 8.

[72] According to the sectional view A-A can be seen on the baffle plate 15 shown there on the right fresh water passage openings 16, whereas left in dashed line the fresh water passage openings 16 of a baffle plate behind are indicated.

Correspondingly, according to the illustration according to FIG. 3, on the left side of the baffle plate 15 shown there, fresh water passage openings 16 are identified, whereas on the right side in dashed representation the fresh water passage openings 16 of the baffle plate 15 are indicated along the section line A-A.

[74] Thus, the fresh water from the fresh water inlet 9 to the fresh water outlet 10 meanders through the fresh water guide 3 within the fresh water line. Channel 17 passed, resulting in a very advantageous forced operation of the fresh water through the heat exchanger 1.

[75] In order to be able to further influence the flow of fresh water through the fresh water guiding device 3, the fresh water passage openings 16 arranged below are provided with a larger cross section than fresh water passage openings 16 lying above them. This achieves that the lower area of the fresh water guiding device 3 , So in particular the area of the fresh water 3 below the horizontal center plane 5, much more fresh water can be flowed through as overlying areas. This is particularly advantageous when the wastewater pipe 2 is not completely filled with wastewater, but for example only in its lower third, which then more heat energy can be transferred from the wastewater to the fresh water, which amplifies the fresh water 3 at the bottom flows through. This also advantageously an increase in effectiveness of the heat energy transfer between the wastewater and the fresh water can be achieved.

[76] In the present first exemplary embodiment of the heat exchanger 1, the present forced lateral guide devices 13 or the baffles 15 not only perform the function of deflecting means 14, but also each have a reinforcing function for the sewage pipe 2, in particular for the common partition wall 12 of the heat exchanger 1.

Thus, the heat exchanger 1 has, in addition to the deflection means 14, also firming means 19 for strengthening the common partition, so that it can be advantageously designed particularly thin-walled.

[78] In this first exemplary embodiment of the heat exchanger 1, the dividing wall thickness of the common dividing wall 12 is only 0.5 mm, so that the heat energy transfer between the waste water and the fresh water can be substantially further improved.

However, since the fresh water, in particular in the sanitary area of buildings, is often subjected to 8 bar or more, it is advantageous if the common partition 12, which is yes in direct contact with the fresh water, by the strengthening means 19th is reinforced, so that an implosion of the sewer pipe 2 due to the relatively high pressure within the fresh water device 3 can be avoided.

Therefore, the tightening means 19 are advantageously each formed as a circular frame 20. In this case, the circular frame 20 extends between the common partition wall 12 and the tubular housing 4 of the fresh water guide device 3, so that a baffle plate 15 can be provided with the fastening means 19 at once.

[81] Advantageously, the baffles 15 and the circular mullion 20 are used immediately as a heat conducting means 21, which further improve a heat energy transfer between the wastewater and the fresh water significantly.

For this purpose, the baffles 15 and the circular rib 20 are materially connected to the common partition wall 12 and also have a material thickness of less than 1 mm, so that they can derive the heat energy particularly fast to the fresh water or cooled particularly fast by the fresh water can be. As a result, the heat energy from the wastewater can be dissipated as quickly as possible to these heat-conducting devices.

Thus, the present forced transverse guide means 13 not only take on the function of deflecting means 14 or of strengthening means 19 but also immediately the function of a heat conducting device 21, so that the present heat exchanger 1 can be used particularly effectively. All this is enormously advantageous in order to be able to transfer even low heat energy from the wastewater to the fresh water.

By flowing along the fresh water to the heat conducting devices 21 or heat fins and the eccentric design of the fresh water flow is concentrated at the point in the space between the two tubes 2 and 4 where the highest heat transfer potential exists. Another advantage of this design is the very low installation height of the heat exchanger 1 to above him technical equipment. In particular, by the positive guidance on the fresh water passage openings 16, there is a particularly strong mixing of the fresh water, which also leads to a better heat transfer. Due to the fact that the fresh water must completely detach itself from the jacket surface of the drainage pipe 2 when it flows through these fresh water passage openings 16, it is possible in the region of the jacket surface, where there is generally an increased friction, not to a nem consistently unwanted heat film come. The total cross section of the fresh water passage openings 16 should ideally be much larger than the cross section of the surrounding fresh water lines (not shown here), in order to avoid that in the heat exchanger 1 too large pressure losses can occur. The same also applies in the flow cross-section between the tubular housing 4 and the common partition wall 12.

[85] According to the illustrations of FIGS. 4 to 8, a further exemplary embodiment of a heat exchanger 101 comprising a sewage pipe 102 with a fresh water guide 103 is shown.

In this case, the fresh water guide 103 has a tubular housing 104 with a fresh water inlet 109 and a fresh water outlet 110. The sewage pipe 102 has an inlet region 106 and an outlet region 107 and thus a wastewater flow direction 108, which is directed from the left to the right in FIGS. 4 and 5.

[87] According to this further exemplary embodiment of the heat exchanger 11, however, the sewage pipe 102 is arranged centrically opposite the fresh water guide 103 so that a horizontal center plane 105 is not only centered with respect to the fresh water guide 103 but also with respect to the sewage pipe 102.

[88] Here, too, the heat exchanger 101 operates according to the principle of a countercurrent heat exchanger, so that the fresh water is passed through a fresh water duct 117 of the fresh water guide 103 counter to the waste water flow direction 108.

[89] In the area of the fresh water guide 103, the waste water pipe 102 and the fresh water guide 103 have a common partition 112, which in the present case likewise has a partition wall thickness of 0.5 mm.

For stabilizing or consolidating this common partition 112, tightening means 119 are each provided in the form of a circular ruff 120 (see in particular also FIGS. 6, 7 and 8). Each of these circular guards 120 likewise provides a forced transverse guidance device 113, by means of which deflection means 114 can be realized within the fresh water guiding device 103. [91] Thus, all the forced-transverse-guiding devices 113 of the fresh-water guiding device 103 design corresponding baffle plates 115, wherein each of the baffle plates 115 has a single fresh-water passage opening 116. Each of these fresh water passage openings 116 is provided in the upper area of the fresh water guide device 103.

[92] In order to realize a meandering fresh water supply by means of the Frischwasserleit- channel 117 with respect to this further embodiment of the heat exchanger 101, a separating longitudinal wall 125 is disposed within the Frischwasserleiteinrichtung 103 between the common partition wall 112 and the tubular housing 104 of Frischwasserleiteinrichtung 103. Thus, the Frischwasserleiteinrichtung 103 is divided in the upper region in a vertical center plane 118 of the heat exchanger 101 in a right half and in a left half.

[93] Considering now the heat exchanger 101 along a section line C-C according to the illustration according to FIG. 6, it can be clearly seen that the fresh water passage opening 116 is located on the right side of the dividing longitudinal dividing wall 125. In the dashed Dar- position can be seen on the left side of the dividing line separating wall 125 at an immediately adjacent Kreisspant 120 a fresh water passage opening on the left side of the dividing screen dividing wall 125th

According to the illustration according to FIG. 7, the heat exchanger 101 is depicted along the section line D-D, the circular frame 120 lying in the section line D-D having its fresh water passage opening 116 to the left of the dividing longitudinal dividing wall 125. In dashed representation, the passage opening 116 of the circular shawl 120 from FIG. 6 is shown lying behind it.

Both representations according to FIGS. 6 and 7 show the respective circular frame 120 from a viewing direction which is directed in the direction of waste water flow 108.

[96] Again, the described Zwangsquerführungseinrichtungen 113 serve not only as a deflection 114 or as a tightening means 119, but at the same time as Wärmeleiteinrichtungen 121, which are materially connected to the common partition wall 102.

[97] In order to be able to further improve a heat energy transfer between the wastewater and the fresh water, two such, directly adjacent Wärmeleiteinrichtungen 121 each arranged a Zwischenwärmeleitrippe 126, so that in each case a distance range 127 between two immediately adjacent Zwangsquerführungseinrichtung 113 is used again for improved heat energy transfer. According to the illustration according to FIG. 8, a detail view 128 with respect to a distance region 127 between two heat conduction devices 121 and an intermediate heat conduction rib 126 is shown at least partially.

While the heat conduction device 121 extends in the form of a Kreisspants 120 from the common partition 112 to the tubular housing 104 of Frischwasserleiteinrichtung 103, projects the Zwischenwärmeleitrippe 126 only to about half in the Frischwasserleitkanal 117, so that the Zwischenwärmeleitrippe 126 Although a Can form baffle 115, but no forced transverse guide means 113 in the sense of the deflection 114 represents.

[99] However, the Zwischenwärmleitrippe 126 also forms fixing means 119 for the waste water pipe 102 and for the common partition wall 112 in the form of a arranged around the sewage pipe 102 ring frame 129th

Both the respective heat-conducting device 121 and the respective intermediate heat-conducting rib 126 taper continuously with increasing radial distance, so that the heat-conducting device 121 or the intermediate heat-conducting ribs 126 are made thicker in the region of the common partition wall 112 than at their tubular housing 104 of the fresh-water conducting device 103 facing ends. In this way, a further improved heat transfer between the wastewater and the fresh water can be realized.

It can be clearly seen in particular from the detail view 128 according to FIG. 8 that the common dividing wall 112 has a dividing wall thickness 130 which is substantially smaller than a thickness 131 of the tubular housing 104. The dividing wall thickness 130 of the common dividing wall 112 shown here of the sewer pipe 2 is only 0.5 mm, so that an exceptionally good thermal energy transfer between the wastewater and the fresh water can take place.

[102] Due to the positive guidance and the centric design described here, the

Fresh water flow advantageously passed around the entire lateral surface of the sewage pipe 102, whereby an even higher residence time of the fresh water within the Wärmü- Bertragers 101 can be achieved, which in turn ideally leads to an even higher outlet temperature and performance of the heat exchanger 101. The fresh water is passed through the heat exchanger 101 in a particularly effective manner by means of the heat fins 121 and the dividing longitudinal dividing wall 125. The flow cross sections are also to be dimensioned here in such a way that a critically increased pressure drop in the heat exchanger 101 can not occur in order not to impair subsequent technical devices (not shown). Therefore, the cross section of the fresh water passage openings 116 should ideally correspond to the cross section between the common partition 112 and the tubular housing 104 times the distance of the heat fins 121.

In a third exemplary embodiment according to FIGS. 9 and 10, another heat exchanger 201 likewise consists of a sewage pipe 202 with a fresh water guide device 203, the sewage pipe 202 being placed centrically opposite a tubular housing 204 of the fresh water guide device 203.

Here, too, the wastewater flows from an inlet region 206 to an outlet region 207 through the sewage pipe 202 with a waste water flow direction 108. The fresh water is accordingly passed through the fresh water guide device 203 with a main counterflow direction 211, wherein the fresh water device 208 is attached to the tubular housing 204 a fresh water inlet 209 and a fresh water outlet 210 are provided.

The sewage pipe 202 and the fresh water guide 203 have a common partition wall 212, which is very thin-walled, in order to ensure a more effective heat energy transfer between the wastewater and the fresh water here. The common dividing wall 212 has a dividing wall thickness of 0.5 mm, wherein for stabilizing or consolidating this very thin-walled common dividing wall 212 corresponding strengthening means 219 in the form of dividing longitudinal dividing walls 225 (numbered here only by way of example) are provided.

[0164] The dividing-length dividing walls 225 are concentrically distributed around the sewage pipe 202, with each of the dividing-length dividing walls 225 extending from the common dividing wall 212 to the tubular housing 204 of the fresh-water conducting device 203. By means of the dividing-length partitions 225, a plurality of fresh-water conduits 217 (also numbered here only by way of example) are provided in the longitudinal direction of the heat exchanger 201, so that the Fresh water within the fresh water guide 203 according to a main counterflow direction 211 can be passed through the heat exchanger 201.

[107] In order for the heat exchanger 201 to be able to establish an advantageous fresh-water volume flow, a baffle plate 215 with differently sized fresh-water passage openings 216 (numbered here only by way of example) is arranged inside the fresh-water guide device 203.

The fresh water passage openings 216 with the larger cross sections are located below a horizontal center plane 205 of the heat exchanger 201, so that a larger fresh water volume flow can flow through the fresh water guide 203 in this area than is possible above the horizontal center plane 205.

This is particularly advantageous because in the lower part of the sewer pipe

202 average more and more often wastewater than above the horizontal center plane 205, so that substantially more heat energy can be transmitted between the wastewater and the fresh water below the horizontal center plane 205 than above the horizontal center plane 205.

Therefore, it is advantageous if in the lower part of the fresh water guide

203 larger fresh water passage openings 216 are provided in the baffle plate 215.

[111] In this third embodiment, the partition longitudinal partition walls 225 can well perform functions of heat fins since they are arranged along the main counterflow direction 211 in a star arrangement. Although they do not function as a circle or ring frame, they also fulfill static properties here. The additionally inserted baffle 215 not only increases the stability, but at the same time advantageously splits the flow of fresh water. The fresh water flow can be split by the different sized fresh water passage openings 216 in the baffle 215 so that where the highest heat potential is in terms of wastewater, most of the fresh water can be available.

[112] Another advantageous fresh-water duct 317 of a fresh-water duct 303 of a sewage pipe 302 shows an additional exemplary embodiment of a heat exchanger 301 according to FIG. 11. The sewage pipe 302 is arranged centrally relative to the fresh-water duct 303, the sewage pipe 302 and the fresh-water duct Device 303 have a common partition wall 312. The Frischwasserleiteinrichtung 303 also has a tubular housing 304, which surrounds the sewer pipe 302 at least partially. In the present case, the wastewater is passed according to the wastewater flow direction 308 passed through the heat exchanger 301, while the fresh water flows through the heat exchanger 301 according to a main counterflow direction 311.

As a forced transverse guide device 313, either a single helix formation 340 or a multiple helix formation 341 can extend helically in the main counterflow direction 311 around the waste water pipe 302.

By means of such a helical structure 340 or 341, the fresh-water guide channel 317 can be realized in a particularly simple manner within the fresh-water conducting device 303 or between the sewage pipe 302 and the tubular housing 304.

It is advantageous in this case that the fresh water is helically guided around the entire waste water pipe 302, whereby the residence time and the path of the fresh water within the Frischwasserleiteinrichtung 303 can be significantly extended so that a heat transfer between the wastewater and the fresh water designed all the more effective can be.

Both the single helix formation 340 and the multiple helix formation 341 in the present case design deflection means 314 of the fresh water guidance device 303 with which the fresh water within the fresh water guidance device 303 can also be deflected substantially transversely to the main counterflow direction 303. This results in the previously explained extended path through the fresh water guide 303.

Moreover, with both helical structures 340 and 341 strengthening means 319 for stabilizing or consolidating the sewage pipe 302, it is structurally simple to design so that a particularly thin common dividing wall 312, ideally with a dividing wall thickness of 0.5, also with regard to the heat exchanger 301 mm or less can be created.

In the present case, the two helix formations 340 and 341 can either be drawn around the waste water pipe 302 as a smooth sheet or brought to the shape of the respective helix formation 340, 341 by striking the sheet. An advantage of the smooth sheet is a lesser one Flow resistance, whereby the fresh water channel can be kept correspondingly smaller. An advantage of the folded sheet is a higher static stability and a larger surface area of a heat conducting device formed thereby.

The respective helix formation can therefore also be executed as a double or multiple helix formation 341, it being important to ensure that a fresh water inlet and a fresh water outlet is ideally designed so that all fresh water channels formed are flowed through uniformly, and that the sum of the individual Frischwasserleitkanal - Cross sections gives the required total flow area.

[120] A further advantage of the embodiment as a helical formation 340, 341 is that the fresh water does not undergo such strong flow direction changes as in the above-described embodiments, resulting in less friction and thus less

Can cause pressure loss. Here you can work with smaller flow cross sections. The respective helix 340, 341 can thereby be greatly reduced in the slope, which can advantageously lead to more heat rib surface can be provided in the heat exchanger, less slope equal to more coiling on the same length.

[121] A particular further advantage of such helical structures 340, 341 is the fact that they do not have to have a fixed installation position, whereby the manufacturing and / or assembly can be made particularly simple with lower installation tolerances. Furthermore, they almost always work optimally and they vent themselves completely independently.

Another very great advantage is the fact that it is also possible to work with slightly contaminated fluids within the flow channel, since the geometry of the flow channels is less sensitive to dirt deposits.

In the case of the next exemplary embodiment of a heat exchanger 401 shown in FIGS. 12 to 18, a sewage pipe 402 is arranged centrically opposite a fresh water-conducting device 403 of the heat transfer 401, wherein the fresh water-conducting device 403 comprises a tubular housing 404 which at least constitutes the sewage pipe 402 partially encased.

Between the sewage pipe 402 and the tubular housing 404 of the fresh water device 403, a fresh water passage 417 is configured, wherein the pipe wall of the Sewage pipe 402 again forms a common partition wall 412 with respect to the sewer pipe 402 and the fresh water guide 403.

The fresh water guide device 403 also has forced transverse guide devices 413, which, as explained above, can be configured on the one hand as deflecting means 414 and on the other hand as strengthening means 419 or heat conducting devices 421. In this respect, the forced transverse guide devices 413 present here take on three functions, namely first to redirect the fresh water routed through the fresh water guide 403 transversely to a main counterflow direction 411 of the fresh water, secondly to stabilize or consolidate the common partition wall 412 and thirdly to transfer heat energy from the waste water to fresh water to improve, as already extensively explained above with reference to the other embodiments.

In order to additionally set the water routed through the fresh water channel 417 into rotation 451 (see FIG. 13), in particular in the longitudinal extent of the fresh water channel 417, correspondingly configured swirl devices 452 (see in particular FIGS. 14, 15 and 17) are provided on the fresh water guide device 403 ) intended.

[127] The swirling devices 452 used with respect to the heat transfer 401 are formed directly by the forced transverse guide devices 413, in that the forced transverse guiding devices 413 configure extensions 453 (here only as an example), by means of which the fresh water can be set in rotation 451. In this case, the abutments 453 are introduced at an angle 454 not equal to 90 ° to the flow direction of the fresh water into the forced transverse guiding device 413, so that, viewed in the direction of flow of the fresh water guide channel 417, an inclined plane is formed.

[128] Depending on whether the angle 454 is greater or smaller than 90 °, the inclined plane 455 tilts with or against the flow path of the fresh water (see Fig. 13). Therefore, it is particularly advantageous if the angle 454 of the projections 453 is not equal to 90 °.

Advantageously, the fresh water flowing through the fresh water conduit 417 follows, for example due to friction and the existing flow resistance, the geometry of the swirling means 452 and is thereby mixed. A downward or upward flow 456 (here only exemplified) in the edge region transverse to the main counter-flow direction 411 is the result. If now every other one of the forced transverse-guiding devices 413 mirror inverted (see in particular FIGS. 14 and 15) to the first one, the fresh water is led up at a first forced transverse-guidance device 413 and led down to the nearest forced-transverse device 413, whereby the fresh water within the Fresh water duct 417 begins to rotate.

[131] In addition to the abutments 453, the surfaces of the forced transverse guiding devices 413 can still be structured, so that this effect can be further strengthened.

[132] In the present case, a first of the swirling devices 452 according to the section line E-E is represented by the heat exchanger 401.

[133] A mirror-inverted further swirling device 452 is depicted with the representation according to FIG. 15 along the section line F-F of the heat exchanger 401.

[134] In the additional detail view 457 according to FIG. 17, a plan view of such a swirl device 452 of the heat exchanger 401 is illustrated in more detail again. Good to see is the outer edge of the forced transverse guide device 413, which provides the swirl device 452. This outer edge 458 is ideally connected to the inside of the tubular housing 404.

[135] Good to see are further. the abutments 453 and the oblique planes 455 provided or formed thereby, which laterally form the outer edge 458 radially further inward edges 459 (numbered here only by way of example). The radially further inwardly lying edges 459 are in this case facing the common partition wall 412, wherein the forced guidance devices 413 in the sense of heat conduction devices 421 are ideally connected in a materially bonded manner to the common partition wall 412.

In another detail cross-sectional illustration 460 (see FIG. 18), one of the forced-transverse-guiding device 413 configured as a swirl device 452 is again represented with respect to the fresh-water duct 417 in cross-section between the common partition wall 412 and the tubular housing 404, the inclined plane 455 of the swirl device 452 of FIG a first folding edge 461 extends to a second folding edge 462. The second folding edge 462 is shown hidden in the illustration according to FIG. 18. By way of example, the two folding edges 461 and 462 are also marked on the additional detail monitor 457 (FIG. 17). [137] An alternative to the swirling means 452 swirling device 465 is shown with the illustration of FIG. 19. Here, the alternative swirl device 465 is configured in the form of a spiral plate 466, which extends along a longitudinal axis 467.

In this case, the alternative swirl device 465 can be inserted into virtually any desired fresh water guide channel, wherein the alternative swirl device 465 in the form of the spiral plate 466 can likewise set the fresh water into rotation.

[139] For example, by reducing the pitch of the spiral plate 466, the rotational speed can be increased, whereby, however, decreases the flow resistance of the insert. By increasing the pitch of the spiral plate 466, the flow resistance can be reduced, but this can slow down the rotational speed. Again, it is preferable to make sure that the required flow cross-section is guaranteed in the fixture.

[140] Such spiral plates 466 can be installed in all embodiments. But they can also be used to retrofit existing heat exchangers and thereby increase their effectiveness.

For example, spiral sheets 466 can be made simply by twisting strip material and thereby be brought to the desired flow channel geometry by processing their outer shape.

[142] However, if it is not possible to install spiral plates due to the flow resistance, there is an alternative, namely, to construct the heat fins, which are shaped by tying, geometrically so as to generate a rotation in the fluid itself ,

[143] These above-described rotations can advantageously cause an already warmed fresh water, which is located in the vicinity of a common partition, is conveyed radially outward. In this respect, cooler fresh water can be fed from the outside radially inward. As a result, a thorough mixing of the fresh water is additionally promoted and it is possible for an optionally forming heat film to be flushed away on the common dividing wall, in particular radially outward over the heat fins. This in turn can cause the highest possible temperature difference between a medium to be cooled and a medium to be heated. [144] A further advantage is that existing flow shadows, which can arise through the formation of a corresponding sheet, are reduced or completely flushed in the heat fins or circular frames.

[145] The general advantage of the above-described forced guides of the fresh water in all heat exchangers is a guide of the fresh water in areas of maximum heat potential, an increased residence time of the fresh water within the Frischwasserleiteinrichtung of the heat exchanger and thus an associated higher outlet temperature of the fresh water than non-preheated fresh water, a significantly higher mixing of the fresh water within the fresh water guide device and thus an improved heat transfer compared to a freely flowing fresh water with respect to heat exchangers without such forced transverse guidance devices.

[146] It should also be mentioned at this point that by means of the advantageous clutches present at the radially inward direction, that is to say in the area of the common partition wall, a broader foot can advantageously be designed on the respective components, which likewise have a statically stabilizing effect on the entire construction can.

[147] The connections for the various embodiments to a fresh water line and a service water line will not be described or illustrated in detail here. They are ideally designed to be compatible with common, marketable systems. For example, they are suitable for compression sleeves, Lötfittinge, fittings, push-in sleeves, flanges or the like.

LIST OF REFERENCE NUMBERS

1 heat exchanger

2 sewer pipe

3 fresh water device

4 pipe-like housing

5 horizontal center plane

6 inlet area

7 outlet area

8 Wastewater flow direction

9 fresh water intake

10 fresh water drain

11 main counterflow direction

12 Common partition

13 forced transverse guidance devices

14 deflection

15 baffles

16 fresh water ports

17 fresh water duct

18 vertical center plane

19 firming agents

20 circular frame

21 heat conducting device

101 heat exchanger

102 sewer pipe

103 fresh water guide

104 Tubular housing

105 horizontal center plane 106 inlet area

107 outlet area

108 Wastewater flow direction

109 Fresh water inlet 110 Fresh water outlet

111 main counterflow direction

112 Common partition

113 forced transverse guidance devices

114 deflecting means 115 baffles

116 fresh water ports

117 fresh water duct

118 vertical center plane

119 Strengthener 120 Circular panty

121 heat conducting device

125 separating edge partition

126 intermediate heat conducting device

127 Distance range 128 Detail view

129 Ringspant

130 partition wall thickness

131 thickness

201 Heat exchanger 202 Sewer pipe

203 Fresh water device

204 Pipe-like housing 205 horizontal center plane

206 inlet area

207 outlet area

208 Sewage flow direction 209 Fresh water inlet

210 fresh water drain

211 main counterflow direction

212 Common partition 215 baffles 216 Fresh water outlet

219 Clamping agent

225 partition walls

301 heat exchanger

302 Wastewater pipe 303 Fresh water conducting device

304 Tubular housing

308 Wastewater flow direction

311 main counterflow direction

312 Common partition wall 313 Forced lateral guidance devices

314 deflection means

317 fresh water duct

319 Clamping agent

340 single helix formations 341 multiple helix formations

401 heat exchanger

402 sewer pipe 403 fresh water guide

404 Tubular housing

411 main counterflow direction

412 Common partition wall 413 Forced lateral guidance device

414 deflecting means

417 fresh water duct

419 Clamping agent

421 Heat conduction device 450 Detail view

451 rotation

452 twisting device

453 events

454 angle 455 inclined plane

456 flow

457 Additional detail supervision

458 Outer edge

459 Radially further inside edge 460 Detail cross-sectional view

461 First folding edge

462 Second folding edge

465 Alternative swirl device

466 Spiral plate 467 Longitudinal axis

Claims

claims: 1. waste water pipe (2) with a Frischwasserleiteinrichtung (3) for transferring heat energy between a wastewater and a fresh water, wherein the sewage pipe (2) and the Frischwasserleiteinrichtung (3) have a common partition wall (12), and wherein the fresh water from a fresh water inlet (9) to a fresh water drain (10) is continuously guided against a waste water flow direction (8) of the waste water, characterized by means (14) for diverting the fresh water across the waste water flow direction (8), so that the fresh water with a main counterflow direction (11) is also guided transversely to the waste water flow direction (8). Second sewage pipe (2) with a fresh water guide (3) for transferring heat energy between a waste water and a fresh water, wherein the sewage pipe (2) and the Frischwasserleiteinrichtung 3) have a common partition wall (12), characterized by means (19) for strengthening the common partition (12). 3. Wastewater pipe (2) according to claim 1 or 2, characterized in that the common partition wall (12) at least partially a partition wall thickness (130) of less than 1.5 mm or less than 1 mm, preferably less than 0.8 mm, has. 4. Wastewater pipe (2) according to one of claims 1 to 3, characterized by at least one forced transverse guide means (13) for fresh water, which is arranged within a Frischwasserleitkanals (17) of the fresh water guide (3). 5. sewer pipe (2) according to claim 4, characterized in that the at least one forced transverse guide means (13) forms a Festigungsspant (20) for the common partition wall (12). 6. sewage pipe (2) according to one of claims 1 to 5, characterized in that the deflection means (14) and / or the strengthening means (19) between the common partition (12) and a tubular housing (4) of the fresh water guide (3 ) has fresh water baffle means (15) arranged substantially transversely to the direction of waste water flow (8). 7. Wastewater pipe (2) according to one of claims 1 to 6, characterized in that the deflecting means (14) and / or the strengthening means (19) embody a meandering device meandering through the fresh water conducting means by means of the fresh water opposite the wastewater flow direction (8) (3) is guided through. 8. Wastewater pipe (2) according to one of claims 1 to 7, characterized in that the deflection means (14) and / or the strengthening means (19) are helically arranged around the sewage pipe (2) around. 9. Wastewater pipe (302) according to one of claims 1 to 8, characterized in that the deflecting means (314) and / or the consolidating means (319) arranged as a single helical structure (340) or as Mehrfachhelixgebilde (341) around the sewage pipe (302) around are. 10. A sewer pipe (2; 102) according to any one of claims 1 to 9, characterized in that the deflection means (14; 114) and / or the fastening means (19) comprise a circular frame (20) or a ring frame (129). 11. Wastewater pipe (2) according to one of claims 1 to 10, characterized in that the deflection means (14) and / or the consolidation means (19) has a fresh water passage opening (16). 12. Wastewater pipe (2) according to any one of claims 1 to 11, characterized in that at least one of the deflection means (14) and / or at least one of the consolidation means (19) has a plurality of fresh water passage openings (16), which preferably comprise voneinan- different diameters , 13. Wastewater pipe (2) according to one of claims 1 to 12, characterized in that fresh water passage openings (16) of first deflection means (14) and / or first consolidation means (19) and a further fresh water passage opening (16) of adjacent further deflection means (14) and / or adjacent further fixing means (19) mirrors are arranged mutually reversed. 14 wastewater pipe (2) according to one of claims 1 to 13, characterized in that the deflection means (14) and / or the strengthening means (19) comprise a heat conducting device (21). 15. Wastewater pipe (2) according to claim 14, characterized in that the heat conducting device (21) is arranged in a materially coherent manner on the common partition wall (12). 16. Wastewater pipe (2) according to claim 14 or 15, characterized in that the heat conducting device (21) has a material thickness of less than 2 mm, preferably less than 1 mm. 17. Wastewater pipe (2) according to any one of claims 1 to 16, characterized by means for swirling the fresh water within the Frischwasserleiteinrichtung (3). 18. Wastewater pipe (2) according to claim 17, characterized in that the swirling means comprise a swirling device (452; 465) by means of which the fresh water within the fresh water guiding device (3) can be set in rotation. 19. Wastewater pipe (2) according to claim 18, characterized in that the swirl device (452) comprises a forced transverse guide device (13), which is arranged transversely within a Frischwasserleitkanals (17) of Frischwasserleiteinrichtung (3). 20. Wastewater pipe (2) according to claim 18, characterized in that the swirl device (465) comprises a spiral formation (466), which is arranged longitudinally within a Frischwasserleitkanals (17) of Frischwasserleiteinrichtung (3). 21. Wastewater pipe (2) according to one of claims 1 to 20, characterized in that the common partition wall (12) of a tubular housing (4) of the fresh water guide (3) is more than 5 mm, preferably more than 10 mm, spaced , 22. Wastewater pipe (2) according to one of claims 1 to 22, characterized in that the sewage pipe (2) is arranged concentrically with respect to the Frischwasserleiteinrichtung (3). 23. Heat exchanger (1) for transferring heat energy from a first medium to another medium, characterized by a sewage pipe (2) according to one of the preceding claims 1 to 22.