EP0305813B1 - Offener Warmwasserbereiter - Google Patents

Offener Warmwasserbereiter Download PDF

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Publication number
EP0305813B1
EP0305813B1 EP88113382A EP88113382A EP0305813B1 EP 0305813 B1 EP0305813 B1 EP 0305813B1 EP 88113382 A EP88113382 A EP 88113382A EP 88113382 A EP88113382 A EP 88113382A EP 0305813 B1 EP0305813 B1 EP 0305813B1
Authority
EP
European Patent Office
Prior art keywords
water
tank
valve
water tank
cold water
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.)
Expired - Lifetime
Application number
EP88113382A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0305813A1 (de
Inventor
Reinhold Elflein
Rolf Kurz
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.)
Forbach GmbH and Co KG
Original Assignee
Forbach GmbH and Co KG
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 Forbach GmbH and Co KG filed Critical Forbach GmbH and Co KG
Priority to AT88113382T priority Critical patent/ATE81397T1/de
Publication of EP0305813A1 publication Critical patent/EP0305813A1/de
Application granted granted Critical
Publication of EP0305813B1 publication Critical patent/EP0305813B1/de
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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F24D3/1016—Tanks having a bladder
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/188—Water-storage heaters with means for compensating water expansion

Definitions

  • the invention relates to an open water heater according to the preamble of claim 1.
  • such a device In order to prevent expansion dripping water from escaping via the tap, it is already known to equip open water heaters with a device for changing the volume of the hot water tank, through which the expansion water which arises during the heating process recorded and thus the leakage from the tap is avoided.
  • a device for changing the volume of the hot water tank, through which the expansion water which arises during the heating process recorded and thus the leakage from the tap is avoided.
  • such a device consists of a compressible and expandable bellows which is arranged outside the water tank and which is brought into fluid communication with the water tank of the water heater via a water pipe.
  • a pressure or temperature-dependent lifting device is coupled to the bellows, with the aid of which the bellows compressed after the tapping process is pulled apart and a quantity of water corresponding to the volume of the bellows is drawn off from the water container via the water pipe.
  • the lifting device for actuating the bellows is, for example, a spring-loaded piston which is coupled to the bellows and which is accommodated in the cold water inlet pipe and the plunger of which is guided through the base plate of the water tank.
  • the moving parts of the lifting device come into contact with the hot water of the water tank, so that there is a risk that their functionality will be impaired by limescale deposits.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, achieves the object of providing a device for changing the container volume for open water heaters, in which the functional parts for actuating said device do not come into contact with hot water, so that limescale deposits are prevented and blocking is definitely excluded.
  • the device for changing the water tank volume acts in such a way that a self-contained water-free chamber is created by initiating the dispensing process by displacing water below the water tank. After the tapping process, the chamber is reduced again, which creates a corresponding water-free space for receiving the expansion water generated during the heating process inside the water tank.
  • the water tank 1 with a water heater provided with an electric heating device 2 for a so-called open or unpressurized water heater is referred to, which consists of a tubular body 3 and each with a liquid-tightly connected base and top plate 4 or 5.
  • the water tank 1 includes a cold water supply pipe 7 controlled by a solenoid valve 6, which is guided parallel to the outside of the water tank 1 and ends in the area below the base plate 4 at a valve and piston housing body 8 held therein and there at an inlet pipe socket 9 of the valve - And piston housing body 8 is connected.
  • a higher-lying outlet pipe socket 10 is provided on the side opposite the inlet pipe socket 9, to which a pipe bend unit 7 'which is a continuation of the cold water inlet pipe 7' is connected.
  • the pipe elbow unit 7 ' is in the lower part of the water tank tube body 3 through the wall tight, with the cold water outlet 11 is aligned to the bottom of the water tank.
  • a hot water outlet pipe 12 is inserted, which serves to remove the heated water, which is pressed by the cold water entering the water tank below through the hot water outlet pipe 12 to a water tap, not shown.
  • the valve and piston housing body 8 contains a piston valve 13 in a guide piece 14 inserted there.
  • the piston valve 13 has a valve plate 15 which rests on the guide piece 14 in the rest or initial position of the piston valve 13 and is connected to the cold water inlet Storage space 16 keeps closed.
  • Both plates 4, 18 are tightly connected to a flange 21 of the water tank tube body 3.
  • a vent opening 22 is expediently introduced in the base plate 4.
  • the method of operation of the water heater described with a device for changing the water tank volume in order to avoid the escape or dripping of expansion water during the heating process is as follows:
  • the hot water tap not shown, at which the hot water outlet pipe 12 ends, is opened, the cold water inlet to the cold water inlet pipe 7 is released via the solenoid valve 6.
  • the then existing pressure of the cold water acts in the storage space 16 against the plate 15 of the piston valve 13.
  • the membrane-like sealing plate 18 stretched over the cap 17 is also inevitably raised and in doing so presses or displaces a certain volume-dependent amount of water (about 4% of the water tank content) via the hot water outlet pipe 12 to the hot water tap.
  • a water-free chamber 23 is set up between the membrane-like sealing plate 18 and the base plate 14, the volume of which is approximately 4% of the water content of the water container 1.
  • the piston valve 13 in the valve and piston housing body 8 reached its end position, the cold water supply via the elbow unit 7 'to the water tank 1 is released.
  • 12 hot water is pressed to the tap due to the resulting cold water supply via the hot water outlet pipe.
  • the piston valve 13 with its attached cap 17 returns to its starting position according to FIG. 1.
  • the membrane-like sealing plate 18 inevitably follows the decline of the piston valve 13.
  • the water level in the water tank 1 lowers in accordance with the previously displaced volume, as a result of which a water-free space 24 in the water tank 1 above corresponds to the volume of the chamber 23 adjusts which can then take up the expansion water which arises when the contents of the water tank are heated up, as a result of which water drips from the hot water tap is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Cookers (AREA)
  • Details Of Fluid Heaters (AREA)
  • Apparatus For Making Beverages (AREA)
  • Central Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP88113382A 1987-08-29 1988-08-18 Offener Warmwasserbereiter Expired - Lifetime EP0305813B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88113382T ATE81397T1 (de) 1987-08-29 1988-08-18 Offener warmwasserbereiter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3728919 1987-08-29
DE19873728919 DE3728919A1 (de) 1987-08-29 1987-08-29 Offener warmwasserbereiter

Publications (2)

Publication Number Publication Date
EP0305813A1 EP0305813A1 (de) 1989-03-08
EP0305813B1 true EP0305813B1 (de) 1992-10-07

Family

ID=6334790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113382A Expired - Lifetime EP0305813B1 (de) 1987-08-29 1988-08-18 Offener Warmwasserbereiter

Country Status (10)

Country Link
US (1) US4862834A (cs)
EP (1) EP0305813B1 (cs)
JP (1) JPH0792283B2 (cs)
AT (1) ATE81397T1 (cs)
CA (1) CA1291196C (cs)
DE (2) DE3728919A1 (cs)
ES (1) ES2035198T3 (cs)
GB (1) GB2209203B (cs)
GR (1) GR3006032T3 (cs)
HK (1) HK82191A (cs)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993015367A1 (en) * 1992-01-29 1993-08-05 Sheringham Investments Pty. Ltd. Continuous water heater
DE4225827A1 (de) * 1992-08-05 1994-02-10 Forbach Gmbh Offener Warmwasserspeicher
US5277152A (en) * 1993-01-15 1994-01-11 Liao Hsin Yen Water heater
DE4302113A1 (de) * 1993-01-27 1994-07-28 Forbach Gmbh Offener Warmwasserbereiter
EP0665410A1 (de) 1994-01-26 1995-08-02 FORBACH GmbH Offener Warmwasserbereiter
DE10163795B4 (de) * 2001-12-22 2014-10-09 Stiebel Eltron Gmbh & Co. Kg Offener Warmwasserbereiter mit einem Stellelement zur Volumenänderung
EP1391593A1 (en) * 2002-08-19 2004-02-25 Perkins Engines Company Limited Fluid filtration system with resiliently expandable filter element
GB2402994B (en) * 2003-06-18 2005-11-09 George Hanson-Graville Unvented water storage tank apparatus
US6920844B1 (en) 2004-04-07 2005-07-26 Sioux Chief Manufacturing Co., Inc. Thermal expansion arrester for water heaters
US9151516B2 (en) * 2006-01-27 2015-10-06 Emerson Electric Co. Smart energy controlled water heater
US9188363B2 (en) 2006-01-27 2015-11-17 Emerson Electric Co. Smart energy controlled water heater
US9310098B2 (en) 2006-01-27 2016-04-12 Emerson Electric Co. Water heater control using external temperature sensor
CN103591694B (zh) * 2012-08-13 2016-01-20 贺国新 一种带有水压开关的开水器
CN103912982A (zh) * 2013-01-07 2014-07-09 爱烙达股份有限公司 具有冷热水混合功能的热水器
WO2015022693A1 (en) * 2013-08-15 2015-02-19 Chromagen Agricultural Cooperative Society Ltd. Expandable boiler
CN111503893B (zh) * 2020-03-13 2025-06-24 上海电气集团股份有限公司 一种新型熔盐储热热水器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568107A (en) * 1948-09-03 1951-09-18 Stewart Warner Corp Safety fuel system for heaters
US2865541A (en) * 1956-10-08 1958-12-23 Harry F Hicks Sprayer
DE1454680A1 (de) * 1962-02-22 1969-02-20 Forbach Gmbh & Co Kg Heisswasserspeicher
US3344960A (en) * 1965-08-30 1967-10-03 Gen Motors Corp Fluid metering device
BE739712A (cs) * 1969-10-01 1970-03-16
DE3040450C2 (de) * 1980-10-27 1987-10-01 Horst Dr.-Ing. 8000 München Pichert Vorrichtung zum Volumenausgleich für einen Warmwasserbereiter
DE3700598A1 (de) * 1987-01-10 1988-07-21 Forbach Gmbh Einrichtung zum volumenausgleich fuer einen warmwasserbereiter

Also Published As

Publication number Publication date
EP0305813A1 (de) 1989-03-08
JPH0792283B2 (ja) 1995-10-09
GB2209203A (en) 1989-05-04
HK82191A (cs) 1991-10-25
DE3875204D1 (de) 1992-11-12
DE3728919A1 (de) 1989-03-09
GB8819250D0 (en) 1988-09-14
JPS6470646A (en) 1989-03-16
CA1291196C (en) 1991-10-22
GR3006032T3 (cs) 1993-06-21
ATE81397T1 (de) 1992-10-15
GB2209203B (en) 1991-06-26
US4862834A (en) 1989-09-05
ES2035198T3 (es) 1993-04-16

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