EP0674137A1 - Système de distribution d'eau chaude à recirculation - Google Patents

Système de distribution d'eau chaude à recirculation Download PDF

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Publication number
EP0674137A1
EP0674137A1 EP19950103591 EP95103591A EP0674137A1 EP 0674137 A1 EP0674137 A1 EP 0674137A1 EP 19950103591 EP19950103591 EP 19950103591 EP 95103591 A EP95103591 A EP 95103591A EP 0674137 A1 EP0674137 A1 EP 0674137A1
Authority
EP
European Patent Office
Prior art keywords
line
branch
circulation
tap
circulation line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19950103591
Other languages
German (de)
English (en)
Other versions
EP0674137B1 (fr
Inventor
Herbert Spiegel
Robert Böhm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MACK-BOEHM, HEIKE
Original Assignee
Herbert Spiegel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Herbert Spiegel filed Critical Herbert Spiegel
Publication of EP0674137A1 publication Critical patent/EP0674137A1/fr
Application granted granted Critical
Publication of EP0674137B1 publication Critical patent/EP0674137B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • F24D17/0084—Coaxial tubings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0089—Additional heating means, e.g. electric heated buffer tanks or electric continuous flow heaters, located close to the consumer, e.g. directly before the water taps in bathrooms, in domestic hot water lines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6552—With diversion of part of fluid to heat or cool the device or its contents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85954—Closed circulating system
    • Y10T137/85962—With thermal circulating means [thermo-siphons]

Definitions

  • the invention relates to a hot water supply system with a water heater and a hot water ring, which runs through the water heater and in which the heated water circulates under the influence of gravity or driven by a pump, and outgoing stub lines to the taps.
  • central hot water preparation devices have a ring line through which the water circulates and to which the tapping points are connected (DE 36 20 551). This ensures that warm water is immediately available at a tap even after a long withdrawal period.
  • a ring line is very expensive to install and in particular to retrofit existing systems. If hot water should always be immediately available at all taps, the ring line must be routed directly along the taps, which increases its length and the associated heat losses and requires a correspondingly high pump capacity to maintain circulation.
  • the ring lines can have different cross-sections (large cross-section in the flow, in contrast smaller cross-section in the return).
  • the circulation line is inserted into the branch line via a T-piece and advanced to the tap.
  • this procedure has the disadvantage that the feed direction is difficult to control and the circulation line first meets the inside of the branch line at an approximately right angle with respect to the insertion opening, so that it is constantly kinked during the feed to the tap and is frequently damaged in the process.
  • it is problematic to equip long stub lines with such a circulation line, since, due to the small cross section, the delivery pressure increases rapidly with increasing line length in order to maintain the circulation necessary is. Therefore, circulation lines inside a branch line are mostly used in connection with a local hot water generator, which is significantly inferior to central hot water heating in terms of efficiency and operating costs.
  • the object of the invention is to provide a hot water supply system in which the taps are connected to a central hot water supply with a ring line of the smallest possible length via branch lines and water of the desired temperature is always available at all taps.
  • the stub is provided with a circulation line of substantially smaller cross-section, a portion of which runs inside the stub and ends there open in the area of the tap, the part of the circulation line running outside the stub consists of pressure-resistant material , a pipe branch piece is present, the continuous pipe is part of the branch line and the branch pipe receives the circulation line, the longitudinal axis of the branch pipe forms an acute angle with the longitudinal axis of the branch line, which is open opposite the flow direction in the branch line, the section of the circulation line that runs to the tap, is pushed into the branch pipe at the end and the ends of the remaining section of the circulation line on the branch pipe and over open another pipe branch on the ring line.
  • the water is led from a heater through a ring line into the consumer area.
  • the length of the ring line is limited, however, by connecting the individual tap points, for example of a building or a floor, to the ring lines via branch lines.
  • the short length of the ring line means that its heat losses are limited, only a little effort is required to lay it, and the output of the circulating pump required for its operation can be limited.
  • the stub lines are provided with a circulation line inside, which ends open near the tap inside the line. The other end of the circulation line opens out on the ring line via a pipe branch.
  • this junction is at a sufficient distance from the branch point of the branch line, convection by branch line and circulation line takes place, which is driven by the temperature dependence of the water density or the flow in the ring line and conveys warm water to the area of the tap.
  • the circulation line it is necessary for the circulation line to run partly outside the branch line, the circulation line being carried out through the wall of the branch line in a pipe branch piece, the continuous pipe of which is a component the branch line is.
  • the section of the circulation line that runs to the tap is inserted at the end into the branching pipe; the remaining section of the circulation line, which leads back to the ring line, is attached to the branch pipe at the end.
  • the longitudinal axis of the branch pipe forms an acute angle with the longitudinal axis of the branch line, which is preferably substantially below 90 ° and is open in the branch line opposite to the direction of flow. In this way it is avoided that the circulation line in the branch line kinks excessively and can be inserted into the branch line, in particular in the case of retrofitting, without the risk of damaging it.
  • the proposed hot water supply system advantageously continuously provides hot water at the taps.
  • the hot water is generated in a central water heater with a ring line and is correspondingly low in terms of efficiency and supply price.
  • spur lines it is avoided that the ring line becomes unnecessarily long and the associated energy losses due to heat radiation and flow resistance and the installation effort increase too much.
  • the circulation line running inside the branch line significantly reduces the heat losses in this area; it is also possible in this way to retrofit existing systems with little effort. This advantage is reinforced by the special design of the pipe branch, which prevents that the circulation line kinks when it is inserted into an existing branch line.
  • sections of the circulation line, which run inside the branch line consist of flexible material.
  • the circulation line can be laid without problems both in the new installation and in the retrofitting of hot water supply systems in the areas of the branch line that are curved. Furthermore, the introduction into the pipe branch piece is facilitated.
  • the supply system is to deliver the water in drinking quality, it is necessary that the material of the circulation line is food-safe.
  • a preferred circulation line is attached to the inner surface of the stub. This ensures that the circulation line is guided safely and in terms of flow and prevents it from clogging up further removal openings of the branch line during a shift.
  • the attachment is preferably carried out continuously, since individual attachments arranged at a distance from one another can lead to a swirling of the water in the branch line, which increases the flow resistance. With regard to the manufacture of the pipelines, fastening via a web is particularly advantageous.
  • the hot water delivered by a central supply system is usually used to prepare Mixed water with different end temperatures used. While high water temperatures are required at individual taps, it is not necessary in other areas, for example in the bathroom of a household, for warm water to be given off substantially above body temperature.
  • the operation of larger parts of the water supply system with a low operating temperature reduces heat losses or allows less effort in the line insulation. It is therefore provided that branch lines are connected to a mixing device, which in turn is fed from the hot water ring line and a cold water line.
  • a heating device of the circulation line with a temperature sensor and control such as a continuous-flow heater with low output
  • the circulation line does not end directly in the ring line, but near the mixing device in the branch line. In this way, the energy-wasting process is prevented that comparatively cold mixed water is conveyed back into the ring line and replaced by hot water, which is immediately mixed with cold water in the mixing device. Furthermore, exact regulation of the mixing temperature of the small circulation volume is technically difficult and easier to achieve by means of additional heating with low output.
  • the circulation line has a circulation pump, both of which Circulation directions are possible.
  • a pump also generates a circulation if this is not possible under the influence of gravity, for example if the circulation and stub lines are routed in the same plane, or if the circulation is opposed to high flow resistances, for example if it occurs across a mixing device.
  • the circulating pump therefore has a control unit which interrupts the pumping process during water withdrawal. Since water withdrawal is accompanied by a drop in pressure in the branch line, it can be determined with a pressure sensor attached there.
  • a suitable hot water supply system is equipped with a central control unit for the circulation pump, heating and / or mixing device and connected to the sensors.
  • a central control unit opens up further possibilities for automatic operation of the system and additional protective measures, for example switching off the heating if the circulation pump fails. With the help of a timer, a temperature reduction overnight or an occasional heating up of the mixed water to kill germs is permitted.
  • a motion detector In connection with a central control unit, a motion detector allows the water in the tap can only be brought up to operating temperature when a person is in their vicinity, thus saving energy, especially when the tap is rarely used.
  • An input device in the area of a tap makes it easy to operate the control unit.
  • the water is heated and circulated in a heater (1), preferably driven by a pump, through a ring line (2).
  • the heated water reaches the tapping points (4) via stub lines (3), of which only one is drawn completely for reasons of clarity. So that hot water is immediately available at the tapping points (4) even if they have not been drawn off for a long time the stub lines (3) are provided with a circulation line (5) through which the cooled water is removed from the area of the tap (4) and into the warmer part of the stub line (3) near the ring line (2) with the help a circulation pump (6) is promoted.
  • the circulation line (5) which is open at the end in the region of the tap (4), is partly guided inside the branch line (3) in order to reduce heat radiation and to reduce the installation effort.
  • Near the circulation pump (6) it is led through a pipe branch (7) from the branch line (3) and ends after passing through the circulation pump (6) via a T-piece (8), which is preferably close to the branch from the ring line (2) is arranged in the stub (3).
  • a further energy saving can be achieved in the operation of the hot water supply system by connecting branch lines, which are connected to tapping points where only moderately warm water is required, are connected to the ring line (2) via a mixing device (9), whereby the water of the ring line mixed with water from a cold water pipe (10) and thus brought to the required temperature. Since it would be impractical in this case to return the cooler mixed water through the circulation line (5) to the ring line (2) and at the same time to cool hot water by mixing, the temperature is regulated by means of a heater (11) which is in the circulation line (5) is arranged. A temperature sensor (12) is used in the Branch line (3) in cooperation with a central control unit (13) for regulating the temperature of the heating (11) and via a servomotor (14) of the mixing device (9).
  • An input device (15) of the control unit (13) is preferably arranged in the region of a tap (4). If the tapping points are only used occasionally, a motion detector (16) is useful so that the control unit can determine the presence of people and only in this case the water at the tapping point (4) via the heater (11) or the mixing device (9) to the operating temperature brings. Finally, a pressure sensor (17) is attached in the branch line (3), with which the pressure drop associated with water withdrawal can be determined, so that the circulation pump (6) and also the heater (11) are switched off via the control unit (13) during the water withdrawal becomes. To simplify the installation of the system, it is advantageous to integrate the components shown in the area (18) with dash-dotted lines in a common housing.
  • the pipe branch piece (7) and the end of the circulation line (5) in the region of the tap (4) are shown on a larger scale in FIG.
  • the water flows from the branch line (3) into the open end (19) of the circulation line (5).
  • the circulation line (5) is fastened inside the branch line (3) with a continuous web (20).
  • the circulation line (5) enters the branch pipe at an acute angle so that it is not excessively kinked (21) a.
  • the circulation line is designed as a pressure-resistant pipe (22).
EP19950103591 1994-03-23 1995-03-13 Système de distribution d'eau chaude à recirculation Expired - Lifetime EP0674137B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409927 1994-03-23
DE19944409927 DE4409927A1 (de) 1994-03-23 1994-03-23 Wasserversorgungsanlage mit automatischem Mischsystem

Publications (2)

Publication Number Publication Date
EP0674137A1 true EP0674137A1 (fr) 1995-09-27
EP0674137B1 EP0674137B1 (fr) 1998-02-11

Family

ID=6513554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950103591 Expired - Lifetime EP0674137B1 (fr) 1994-03-23 1995-03-13 Système de distribution d'eau chaude à recirculation

Country Status (5)

Country Link
US (1) US5586720A (fr)
EP (1) EP0674137B1 (fr)
AT (1) ATE163222T1 (fr)
DE (2) DE4409927A1 (fr)
DK (1) DK0674137T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082781A (en) * 1996-01-24 2000-07-04 Hage Fittings Gmbh & Co. Kg Pipe connecting device
DE19906781A1 (de) * 1999-02-18 2000-08-31 Frank Hoeppner Warmwassersystem
WO2017089068A1 (fr) 2015-11-26 2017-06-01 Evonik Degussa Gmbh Systèmes de liants contenant des prépolymères à groupes alcoxysilyle et des composés époxydes ainsi que leur utilisation

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9814585D0 (en) * 1998-07-07 1998-09-02 Ray Neville G Deadleg circulation system
US6125880A (en) * 1999-10-13 2000-10-03 Komfort 2001 Ltd. Mass flow (volume flow) stabilized circulation network
DE102004033770A1 (de) * 2004-07-12 2006-02-02 Egon Birkenmaier Vorrichtung zur Wasserzuteilung für eine Spüleinrichtung und Spülkasten
DE102008033063B4 (de) 2008-07-15 2019-10-10 Frank Triesch Verfahren und Vorrichtung zur zentralen Warmwasserversorgung
US10458216B2 (en) 2009-09-18 2019-10-29 Heat On-The-Fly, Llc Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing
US8171993B2 (en) * 2009-09-18 2012-05-08 Heat On-The-Fly, Llc Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing
EP2412981B1 (fr) 2010-07-30 2016-05-04 Grundfos Management A/S Système de pompe
US9683428B2 (en) 2012-04-13 2017-06-20 Enservco Corporation System and method for providing heated water for well related activities
US8905138B2 (en) 2012-05-23 2014-12-09 H2O Inferno, Llc System to heat water for hydraulic fracturing
US9328591B2 (en) 2012-08-23 2016-05-03 Enservco Corporation Air release assembly for use with providing heated water for well related activities
EP3298332A4 (fr) * 2015-03-11 2020-01-08 Pumpmodule X AB Système de génération de circulation de fluide dans un conduit
US10323200B2 (en) 2016-04-12 2019-06-18 Enservco Corporation System and method for providing separation of natural gas from oil and gas well fluids

Citations (4)

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Publication number Priority date Publication date Assignee Title
DE3522344A1 (de) * 1985-06-22 1987-01-02 Meyer Fa Rud Otto Verfahren zur regelung der temperatur des an ein warmwasser-versorgungssystem mit zirkulationsleitung angeschlossenen verbrauchern zufliessenden warmwassers und warmwasserversorgungssystem zur durchfuehrung des verfahrens
DE8533721U1 (fr) * 1985-11-30 1988-04-14 Fehlings, Gerd, 4407 Emsdetten, De
US4759382A (en) * 1986-04-20 1988-07-26 Zeev Harel System of hot and immediate water for taps-water and energy saving
DE9314209U1 (de) * 1993-09-21 1994-02-24 Roesch & Roesch Ges Fuer Chemi Vorrichtung zum Betreiben einer Warmwasserversorgung

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US2181480A (en) * 1937-03-11 1939-11-28 Hoffman Specialty Company Heating system
US2262194A (en) * 1938-04-01 1941-11-11 Honeywell Regulator Co Temperature control system
US2375870A (en) * 1939-10-02 1945-05-15 William A Ray Control system
US2308482A (en) * 1941-03-17 1943-01-19 Jr Charles Adams Pipe fitting
FR2211108A5 (fr) * 1972-12-20 1974-07-12 Pont A Mousson
DE3620551C2 (de) * 1986-06-19 1995-06-01 Grohe Armaturen Friedrich Warmwasserversorgungseinrichtung mit Zirkulationseinrichtung
US4713525A (en) * 1986-07-23 1987-12-15 Kowah, Inc. Microcomputer controlled instant electric water heating and delivery system
DE3641005A1 (de) * 1986-09-25 1988-04-07 Karl Schichl Mischerventil fuer heizungsanlagen
DE3710771A1 (de) * 1987-03-31 1988-10-13 Erhard Peter Fuehrung der zirkulationsleitung im innern des vorlaufrohres
CH673700A5 (fr) * 1987-05-12 1990-03-30 Steinemann Ag
US5277219A (en) * 1991-05-03 1994-01-11 Metlund Enterprises Hot water demand system suitable for retrofit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3522344A1 (de) * 1985-06-22 1987-01-02 Meyer Fa Rud Otto Verfahren zur regelung der temperatur des an ein warmwasser-versorgungssystem mit zirkulationsleitung angeschlossenen verbrauchern zufliessenden warmwassers und warmwasserversorgungssystem zur durchfuehrung des verfahrens
DE8533721U1 (fr) * 1985-11-30 1988-04-14 Fehlings, Gerd, 4407 Emsdetten, De
US4759382A (en) * 1986-04-20 1988-07-26 Zeev Harel System of hot and immediate water for taps-water and energy saving
DE9314209U1 (de) * 1993-09-21 1994-02-24 Roesch & Roesch Ges Fuer Chemi Vorrichtung zum Betreiben einer Warmwasserversorgung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082781A (en) * 1996-01-24 2000-07-04 Hage Fittings Gmbh & Co. Kg Pipe connecting device
DE19906781A1 (de) * 1999-02-18 2000-08-31 Frank Hoeppner Warmwassersystem
WO2017089068A1 (fr) 2015-11-26 2017-06-01 Evonik Degussa Gmbh Systèmes de liants contenant des prépolymères à groupes alcoxysilyle et des composés époxydes ainsi que leur utilisation

Also Published As

Publication number Publication date
US5586720A (en) 1996-12-24
DE4409927A1 (de) 1995-09-28
DE59501425D1 (de) 1998-03-19
EP0674137B1 (fr) 1998-02-11
DK0674137T3 (da) 1998-09-23
ATE163222T1 (de) 1998-02-15

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