DE2007061A1 - Heat exchanger - Google Patents

Description

Heat exchanger

The invention relates to a counterflow heat exchanger consisting of a container that goes in one direction is flowed through and one flowed through in the opposite direction running therein - and at least partially, helically wound pipe, preferably for hot water.

. The object of the invention is to create a heat exchanger of the aforementioned type, in which the effect '. degree of heat transfer from one liquid to the other liquid in the built-in pipe - is improved. ^v , - [

According to the invention, this object is achieved in that, in the aforementioned heat exchanger, the tube Ribs, a core is inserted into the coiled tubing. and the ribs touch the core surface.

The core can advantageously be a closed cylinder be or, in another advantageous embodiment, consist of a tube, 'in the inner bore of which ■ part of the RlppeniOhrea is located. This design of the heat exchanger according to the invention can preferably be built into a water heating system.

The following are two embodiments of the subject invention described in more detail using the drawings * ils show:

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X ' ^l ijj.1 a section through a heat exchanger according to the invention,

FIG. 2 shows a section along the line 2-2 in FIG. ¹ , H 1 IgO a detailed section from FIG.

4 shows the flow diagram of a hot water system with a heat exchanger according to the invention,

Fig. 5 is another flow diagram of a hot water system with a heat exchanger according to the invention,

Fig. 6 a combined hot water and central heating system with a heat exchanger according to the: invention,

7 shows a section through another heat exchanger according to the invention and

8 shows a section through a heat exchanger according to j. Fig. 7, which leads to a combined hot water

and central heating system belongs.

^: According to FIGS. 1 to 3, there is the heat exchanger

from a cylindrical steel or fiberglass housing k; . with inlet and outlet openings 4 and 5, where © e- * threaded connector 4a or 5a for connecting the housing in a pipeline system is attached.

The housing 2 has two further openings 6 and 7, which are the ends of a copper pipe installed in the housing 2 10 record. In the opening 6, a sealing element 6a is installed, which consists of a thread ■ piece 6b for screwing into the housing wall, a parallel to this wall extending and tight there is a one-piece flange 6c and a collar part 6d resting against the wall and pressed against it. The sealing element 6a has two sealing rings 8 in two hats, the zv / ischen the pipe 1u and the sealing

009834/1716. ^8AD original

element 6a ensure a watertight seal.

The other opening has a screwed-in sealing element ^ b. one part of which is screwed into the housing wall, another part forms a sealing flange and from which a further part protrudes from the housing 2 for connection to other pipelines.,...;

The housing 2 furthermore has air discharge or ventilation halls 9 and a threaded hole 11 for attachment of a thermosstat not shown.

In the housing 2 there is a closed one cylindrical core 12 around which a Kohr IQ is wound is. According to ii'ig.3, the pipe ends have smooth surfaces and exit through openings 6 and 7. The middle part of the tube 10 has outer ribs 13 and is so wound around the core 12 that the inner edges of the butts 15 touch the core 12 (. Fig.2) and between the Iiem 12 and the tubular body of the tube 1ü a variety of culverts. 15 arise.

The dimensions of the housing 2, the core 12 and the tube 10 are preferably chosen so that the distance between the housing inner wall and the parts of the finned tube closest to this wall is small, at most 6 ) o the distance from the common axis from the housing, core and finned tube to the inner wall of the housing 2. .- ". ·"

Is inserted in a central heating system Vienne, the heat exchanger 1 as described below, the .L-1 Jnde ⁷ la of the tube 10 is tapered with the water and the other with the Jew '^ ntnahueliLlhnen connected. from_ one % Qs :: el is going to be hot at high speed ^; i / Jasser through the uffmxig 5 in the uehäuoe 2.-pumped.

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The assor continues to flow around the surface of the tube 10 through the .passages 15 and 16 between the. Clans 13 and the core 12 or between the xcippen 13 and the housing 2.

while the water passes through passages 15 and 16; gont uarmme of this water over the tipping 15 and the wall of the iohrs 10 to which the iiohr 10 flowing through Water over. -The Hippen 1J give the Iiohr 10 a considerably larger surface and thus increase the heat exchange efficiency. Raise the ribs 15 continue the turbulence of the water flowing through the housing 2 so that as much water as possible comes into direct contact with the tilt 13. The efficiency of the heat exchange is beyond that by the direction of flight of the pipe 10 flowing through V / ater in the opposite direction to the water flowing around the Iiohr 10 from the boiler.

The use of the heat exchanger 1 in a hot water system a house is described below with reference to Fig.- '.

The heat exchanger 1 is through a pipeline with the interposition of a circulating pump 21 with 'the i.essol 22 connected. The cycle is through a connecting the boiler 22 to the heat exchanger 1 Line 25 closed. Through pipes 25 and 2G are the _.escel 22 and the heat exchanger 1 with one Roof container 24 connected.

To . ■ _cgirL- \: ± χ \\ f.the whole system but the roof container Γ-Ι-; -; it! F-iltcn \ j c. ::. r:. <.; i: filled, -enii der Ercnncr Je: · '... VS;:. eis - .., c ;;' L: dc "i; will, v.'irJ the circulation pump 21

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is put into operation and through the pipeline 23 hot water from boiler 22 to heat exchanger 1 pumped, v / o it washes around the surface of the tube 10 and, as previously described, the flow through it cold water heated. The water is fed to the pipe 10 through a pipe 28 and can can be removed for domestic use via a tap 27 connected to the other end of the sight 10.

- Hachdem the water has 1ü.umspült the pipe from the boiler is via the pipe 20 and the circulation pump 21- _to: fed boiler again and begins the ivreislauf new again. -.

According to Ji'ig. 5, in another IleiB water system the heat exchanger 1 can be connected to an existing hot water system.

The heat exchanger 1 is connected to a "hot water tank 30 connected to the boiler 22 via a pipe 31 and a circulation pump 21 in connection stands. The boiler is connected to the heat exchanger 1 by a pipe 32. Via a pipeline 29 flows to the hot water tank 30 Storage floor cold water from the roof tank 24 too. A vent line 33 connects the roof container with the pipe 32 and the heat exchanger

The finned pipe 10 is supplied with water from the public water pipe through a pipe 28, while water for domestic consumption can be taken from tap 27.

The mode of operation of the system according to FIG. 5 corresponds

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- Ό -

den Gewä ", ii'ig. ^L V

Via the line 29, the memory 30 is nit " cold water from the DacliDeliti.lter 24- filled. _, alas the boiler 22 has been ignited, the circulation pump is activated 21 is sotat in operation and hot water through the Eolir line 32 from the boiler 22 to the heat exchanger 1, where, as described above, it flows around the surface of the helical tube 10 and then through the hot water tank JO down and back flows and via the line 51 and the circulation pump 21 enters the boiler 22 again.

Hot water for domestic consumption is supplied when flowing through the pipe 10, as described above, heated.

By installing the V / heat exchanger 1, you can an already existing hot water system, where z.J. the hot water for consumption is produced directly in the boiler, converted into a system with indirect heating v / earth, in which the water heated by the boiler is routed in a closed circuit and to which the Hot water for domestic consumption by using hot water from the armchair heated without direct contact to have with this.

Fig. 6 shows the application of the heat exchanger 1 in a combined hot water and central heating · system.

The boiler 22 is connected to the heat exchanger 1 via a pipeline 35 and the circuit with the circulating pump 21 is opened up by the line;> 0. jJin auxiliary circuit, connected via the ..iaumheiskörpor soin koniioa, is through ^{with the soffit:} j6

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the line 38 connected. The line JS has a \ ΐ-iotor driven valve 39, aas is connected to an "in V / armeaus tau. S rather 1 attached ^ thermostat 40. .The Thermos, act 40 closes the valve 39 when the ■ water temperature in the Heat exchanger 1 falls below a set valve temperature, the system is supplied with cold water from the roof tank 24 via a line 37 '. A vent line 41 is connected to the line 36. A compensation unit and this compensation unit can be connected to the circuit acts as "over pressure ent! test when the system has been filled with water. . "_.; ·

"Jas system. Works like this: '. ^; ". '

On line 37 the system becomes cold with haters filled from the roof container 24. "Jenn ignited the boiler 22 1st, the circulation pump 21 is put into operation and from. Hot water is pumped up through the line to the boiler 22, flowing around the surface of the pipe 10 i: .i heat exchanger 1 and flows via line 55 "and the circulation pump 21 back to the boiler, as above The hot water is described in the .Röhr ΊΌ heated for domestic use, "with the water flowing in from the pipeline. 43 and the decrease in the Used water via the pipeline 44 takes place. ■

Between the boiler 22. and the ■ heat exchanger 1, the "Jassorunlauf" continues until the 'j.'eiapers.tur of the circulating v'asf3-ers "rises above a set v / ert and the u-'herraostat 40 the ao' gate valve 59 opens so that water is -pumped- into the additional circuit and heats the HaumiiazkÖ-bodies like Hadiatarcn .. Yienn but for the i :: ex ^r -use larger amounts of water g.bgeii ... i earthed and the temperature of the av; isca.on dom KesGOl 29. and the

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Heat exchanger 1 circulating V / ater under a set If the value falls, let the thermostat 40 close the "Kötörventil 40" so that the additional circuit is separated and the entire boiler output is added can serve the temperature of the circulating water to bring it to the set value »

The ü'ig. 7 and 8 show a second arm of the heat exchanger according to the invention.

In the heat exchanger 40 is a copper tube 42 having its outer surface tilting 4J ^- has.

W The tube 42 is made of a cure, which is wound around a sleeve of · llormalstahl, so that the ribs 45 contact the sleeve and • forming a plurality of passages, not shown, between the sleeve and the abutting ribs. At the end of the sleeve 44, a straight piece of the pipe 42 is guided through the central axis of the sleeve 44 by a bend of approximately 180 ° of the pipe 42, so that the straight and the coiled 'x' part of the pipe and the sleeve 42 are coaxial . The straight part of the tube protrudes beyond the end of the sleeve 44. The dimensions of the tube 42 and the sleeve 44 are such that between the outer wall of the tube 42 and the inner wall of the sleeve

fc a narrow ring-shaped water passage is created. The end of the sleeve 44 through which the tube 42 extends has a threaded piece 44a which is inserted into a threaded insert 49 is screwed into opening 49a of the container.

The threaded insert 49 has an opening 50 through : which hindurcji the end of the coiled x'eils of the tube 42 leads.

The end of the winding piece 44a of the sleeve 44 carries a

BAD OBIGiNAL 009834/1716

Coupling siTuck 48 with two threaded connectors 48a and -48b, via which the heat exchanger 40 is connected to the pipeline system. The thread does ζ en 48a is aligned with the straight ieil of tube 42 and the The threaded connector 48b is arranged approximately at right angles to it. . ■. - ■ ■

The wound part is coaxial with the sleeve 44 of the tube 42 surrounded by a housing made of normal steel, that is open at the end of the heat exchanger where the pipe 42 exits and that at its other end into the the heat exchanger enclosing container is tightly welded. The housing-46 has such dimensions, that between the exterior of the coiled tube 42, and the inner wall of the housing 46 is a narrow annular passage 47. The radius of this housing 46 is such that the width of the passage 47 in the radial direction is only 6 ^ of it.

The heat exchanger 40 carries a vent line 41.

According to Pig. 7 is the warmth from closer to 40 in a collecting tank 55 »with the threaded piece 49 in a The opening 49a of the container 55 is screwed in and the housing 46 is welded to the opposite container wall.

j) he Sarnmeltank 55 has near the ground: one by gas or electricity powered Jürhitzer 5.6, which is in, the threaded opening 57 of the container 55 is screwed in.

in the collection tank 55 are a number of holdings 55a, which shows the direction of flow of the water change through the aammeltank 55. The oil tank 55 has.

000834/1716 'bad original

two threaded openings 58, 59, in which .pipes 6u and 61 are screwed.

The pipeline 6u leads to the threaded connector 48b of the heat exchanger 40 and v / e is a pump 62 and a device 63 responsive to pressure.

jjas end of the coiled! part of the xiohr 42 is with a tap, not shown, and the blind of the straight part of the pipe 4-2 over the pipeline 64 and the u-thread connector 48a with the water pipe connected. The pipe 64 also connects the water pipe to a cold water storage tank 65, wherein the water inflow from the water line to the reservoir through a float valve located in this 66 regulated wi d. The reservoir 65 is separated from the collection tank 55 by a layer of insulating material 70 such as polystyrene. The reservoir 65 is through to the bottom of the '55 collection tank a pipe 61 is connected to allow the entire system to be filled with water.

The system works as follows:

If hot water is required for household use, ρ the tap connected to the line 67 is opened and cold water flows out of the water line through the pipe 64, through the straight part of the tube 42, -through the coiled part of the Pipe 42, through the flow restriction apparatus 68, the the maximum flow rate is limited by the pipe 42 and through the pipe 67 to the tap. the pressure-responsive device 63 ensures that such a flow of water through the pipe 64 the pump 62 puts into operation. The pump then delivers more water

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009834/1716

down through the .Pipe 60 'into the collecting tank $ 5? • which the water is heated with the aid of the heater 56 and then flows through the collecting tank 55 around the baffles 55 & around. To the top, with the baffles in the rising from the heater 56. Water a uniform temperature control over the entire tank cross-section ensure by distributing the water evenly. Through a gap 72 between the At the end of the housing 46 and the threaded insert 49, the heated water flows out of the collection tank 55. the heat exchanger 40 and flows around the wound in the passage 47 Part of the pipe 42. The water is diverted at the end of the heat exchanger 40 in the opposite direction and flows through passage 45,. leaves the Heat exchanger 40 through the threaded connector 48b and flows over the. Circulation pump 62 - and the line 60 into the seed tank 55 back. . ". ■; ■..." - -

As previously described, heated water flows from the collection tank 55 on both the wound and the. also the straight part of the tube 42 and heated with it the water flowing through the pipe 42. The direction of flow of the water flowing around the wound part is always the plus direction of that flowing through the pipe Opposite to water. "■

The heat exchanger 40 can also be in a hot water - system'or a combined hot water and central heating system be installed with a separate boiler. "In this EaIl the connection of the heat exchanger according to i'ig. 8 is made. - -

The heat exchanger 40 is on top of the

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previously described collection tanks 55 attached. The end the coiled part of the pipe 42 is connected to the water pipe through a flow restriction member 68 and a conduit 76 ". The flow restriction part 68 is used for this limit the maximum amount of water flowing through from the public water main through pipe 42.

Just as in the arrangement according to J ¹ Ig. 7, the water line is also connected to a storage tank 77 via a pipe 78, the water flow into the storage tank 77 being controlled by a float valve W '. The whole system is supplied with water through a pipe 80 which connects the storage container 77 and the lower part of the collecting tank 75. The storage container 77 is separated from the collecting tank 75 by an insulation layer 70, which consists, for example, of polystyrene.

The straight part of the pipeline 42 leads to hot water via the threaded connector 48a and the pipeline 82 tap, which is not shown, out.

The threaded connector 48b is connected to the boiler and the circulation pump (not shown;

h The hot water from the collection tank becomes the

boiler and the circulation pump passed back through a pipeline, not shown, which is screwed into the nozzle 83 in the wall of the collecting tank 75.

jj'Water intended for consumption only flows through through the coiled part of the tube 42 and then through the straight tube part and the pipeline 82 to the Snt-. When passing through the tube 42 takes place

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previously described heating by means of water pumped through the boiler, not shown, which is thrown through the pipe 48b, through passage 45 and back through the Passage 47 and the gap 42 flows into the collection tank 75. The water then flows around the baffles 75a and flows via a pipeline, not shown, which is connected to the opening 83 is connected back to the boiler.

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Claims (5)

Claims 1.) Countercurrent heat exchanger consisting of one container, which is traversed in one direction and binem traversed in the opposite direction running therein and at least partially helically wound tube, characterized in that the tube (10, 42) has ribs (13, 43) has, in the Rohrwen ^ el a core (12,44) is inserted and the ribs (13,43) contact the core surface. 2. Heat exchanger according to claim 1, characterized in that that the core is a closed cylinder. 3. Heat exchanger according to claim 1, characterized in that that the core consists of a sleeve (44), in the inner bore of which a part of the tube (42) runs. 4. Heat exchanger according to ^ nspruoh 3, characterized in that that the water heated by a water heater (56) flows into the container (46), this outside the Sleeve (44) flows through the sleeve (44) in one direction and then in the opposite direction, while the water to be heated. First the sleeve (44) leading part of the tube (42) in one direction and then in the opposite direction the converted part of the Tubes (42) with a durometer flow. 00983W1716 BADORLGiNAL 5. Heat exchanger according to claim A, characterized in that it is mounted on a water heater, with the interior of which it is in communication and that on the heat exchanger (40) opposite this insulated water tank (65,77) is located. For the applicant: • 'Meissner & Bolte . Patent attorneys Bremen, February 16, 1970 Applicant: ·. Bernard Hawkley - - - '- Anthony Joseph Paveley Birmingham / EnA'land 0 0 9834/1716 ■ ^ßAD ° ^RiQINAL Blank page