EP0421312A2 - Dispositif pour commander le fonctionnement du chauffe-eau rapide pendant la distribution d'eau sanitaire. - Google Patents

Dispositif pour commander le fonctionnement du chauffe-eau rapide pendant la distribution d'eau sanitaire. Download PDF

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Publication number
EP0421312A2
EP0421312A2 EP19900118771 EP90118771A EP0421312A2 EP 0421312 A2 EP0421312 A2 EP 0421312A2 EP 19900118771 EP19900118771 EP 19900118771 EP 90118771 A EP90118771 A EP 90118771A EP 0421312 A2 EP0421312 A2 EP 0421312A2
Authority
EP
European Patent Office
Prior art keywords
water
heat exchanger
cold water
flow
heating
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
EP19900118771
Other languages
German (de)
English (en)
Other versions
EP0421312B1 (fr
EP0421312A3 (en
Inventor
Joachim Berg
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.)
N.V. VAILLANT S.A.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
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 Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd filed Critical Vaillant Austria GmbH
Publication of EP0421312A2 publication Critical patent/EP0421312A2/fr
Publication of EP0421312A3 publication Critical patent/EP0421312A3/de
Application granted granted Critical
Publication of EP0421312B1 publication Critical patent/EP0421312B1/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
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1069—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water regulation in function of the temperature of the domestic hot water

Definitions

  • the present invention relates to a method for controlling the continuous storage operation in the case of tap water on a wall heater, and to a device therefor, comprising a continuous store which can be heated by a heat source for a combination water heater with domestic water treatment and space heating, in particular for a gas wall heater, with a secondary Heat exchanger through which the hot water is heated by the heating water, with a tap fitting with water switch and with a three-way valve for switching from heating to hot water operation via a control unit.
  • the start-up mode which starts with the minimum draw-off quantity at the start of the tap and ends when the full heat exchanger capacity is reached
  • the continuous mode which follows the thermal start-up, and an unlimited water flow guaranteed
  • the reloading operation which keeps the storage content within the specified limits thermally ready to compensate for the lack of performance of the heat exchanger at the start of the tap.
  • These devices have a secondary heat exchanger for domestic water heating, in which the domestic water is heated by heating water.
  • the electrical three-way valve is actuated by a water switch and the heating water is directed through the secondary heat exchanger.
  • a sufficiently large storage space with hot water at a sufficiently high temperature must be available.
  • large storage tanks are not particularly advantageous in terms of both construction and heating technology.
  • the present invention is therefore based on the object of developing a method and a device by means of which brewing water is provided for wall heating devices which, with a minimum of storage space, sensors and actuators, ensures a hot water supply which is ensured by rapid availability and a high outlet temperature constancy and distinguishes an unlimited withdrawal quantity.
  • This problem is solved with a method for controlling the continuous operation with tap water a wall heater, preferably on a combination water heater with process water treatment and space heating, which has a secondary heat exchanger and at least one storage tank, by supplying the incoming cold water flow to the heat exchanger area with a continuously increasing share and to the storage area with a continuously decreasing share during the thermal start-up , the sum of the partial flows being dimensioned so that the continuous operation is carried out in a known manner over the heat exchanger area and that a circulating flow between the heat exchanger area and the storage area is initiated during the recharging operation due to the density differences of the water in the respective areas.
  • the constant switching of the partial flows during the thermal start-up is carried out only after a defined start-up delay. This delay depends on the respective device data, such as storage capacity, heating capacity and the like.
  • a device for performing the method in a combination water heater of the type mentioned is that the flow memory consists of two parts, a memory with the secondary heat exchanger and another memory, that the memory via a hot water connection line and a Cold water connecting line are connected in parallel, that a three-way reversing valve is arranged in the cold water connecting line, which is connected downstream of the water switch in the cold water line and that the three-way reversing valve is provided with a valve drive that is electrically and / or thermally controllable.
  • the closure part and / or the body of the reversing valve has recesses, which, when the reversing valve is at rest, the flow direction from the cold water pipe to the storage tank release, which, however, continuously reduce the flow flow to the accumulator while tapping and actuating the valve drive, and on the other hand increase the flow flow to the accumulator with the secondary heat exchanger to the same extent, so that the sum of the partial flows to the two accumulators remains constant.
  • the invention provides according to a further feature that the closure part and / or the body of the reversing valve has or have recesses which fully release the flow direction from the cold water line to the storage tank with the secondary heat exchanger, on the other hand, the position of the Reversing valves in reloading the cold water connection line between the two reservoirs released and possibly blocked the flow direction of the cold water line.
  • a timing element is connected upstream of the valve drive, as a result of which the reversing valve is reversed during the thermal start-up with a defined initial delay.
  • the drawing shows schematically an embodiment of a combination water heater.
  • the combination water heater has a primary heat exchanger 2 heated by a burner 1, which is connected to a return line 4 provided with a circulation pump 3 and a flow line 5, the latter having a flow temperature sensor 6 which is connected to a measuring line 7 , which leads to an input of a control unit 8.
  • a return line 4 there is also a three-way valve 9 which can be actuated by a motor drive 10.
  • the motor drive 10 of the three-way valve 9 draws its actuating energy from the control unit 8 via a line 11. of radiators, and the heat exchanger return line 13, which returns from a secondary heat exchanger 17 in the memory 14 to the water heater.
  • the flow line 5 is divided into a T-piece in the heating flow line 15 and the heat exchanger flow line 16, which leads to the heat exchanger 17 in the flow storage 14.
  • the burner 1 is supplied with gas via a gas line 27, via a gas valve 28, which is controlled by a magnetic drive 29, and via a gas control device.
  • the magnetic drive 29 is through a line 31, a burner blower 30 through a line 32 with the Control unit 8 connected. Furthermore, the burner 1 is still not shown provided devices, such as ignition device, flame detection device, etc. assigned.
  • the secondary heat exchanger 17 for example in the form of a smooth pipe coil made of copper pipes, is arranged in the store 14, which is designed as a service water tank with appropriate insulation.
  • Coaxial fittings 18 for flow guidance are fastened coaxially in the smooth pipe coil.
  • the connection for the cold water supply is provided in the lower area of the memory 14.
  • a further store 19 is arranged.
  • a temperature sensor 34 of this memory 19 is connected to the control unit 8 via a line 35.
  • the two reservoirs 14 and 19 are connected to one another in their upper region by a hot water connecting line 33 and in their lower region by a cold water connecting line 36 and are thus connected in parallel between the cold water line 25 and the hot water line 24.
  • the hot water line 24 is connected directly to the hot water connecting line 33, whereas the cold water line 25 is connected to the cold water connecting line 36 via a three-way reversing valve 37.
  • the reversing valve 37 can be actuated by a valve drive 38 controlled electrically and / or thermally via a line 39.
  • a water switch 21 with temperature selector and microswitch 23 is connected via a line 40 to the control unit 8, arranged.
  • wel cher is connected via a line 40 to the control unit 8, arranged.
  • tap operation ie when hot water is drawn from the service water line 24 via a tap fitting, cold water flows through the cold water line 25 via the water switch 21. Due to the pressure difference, the microswitch 23 of the water switch 21 triggers the hot water operation by signals via the line 40 to the control unit 8.
  • the dimensioning of the two stores 14 and 19 depends above all on the maximum possible draw-off quantity, on the start-up time on the heating side and on the characteristics of the three-way reversing valve 37.
  • the hot water priority mode is triggered via the microswitch 23 of the water switch 21.
  • the three-way valve 9 is reversed from the motor 10 to the charging circuit via the control unit 8.
  • the burner blower 30 is actuated via the control unit 8 and, after the flushing time has elapsed, the gas valve 28 and the ignition device are actuated and the burner 1 starts up.
  • the reversing valve 37 downstream of the water switch 21 is at the start of the tap in the flow direction on the memory 19, so that the full tap throughput initially flows through the memory 19 to the tap.
  • valve drive 38 controls the flow direction continuously and within a predetermined time to the memory 14 with the secondary heat exchanger 17.
  • the flow resistances within the cable routing are adjusted so that the sum of the partial flows remains the same.
  • the valve drive 38 of the reversing valve 37 can be implemented both electrically, for example by means of a motor or an electrically heated expansion body, and thermally, for example by means of a liquid sensor, expansion body or the like, or from a combination of both.
  • a storage space 22 which, like the space in the storage 19, serves to bridge the power deficit at the start of the tap. In addition, it performs the function of a damper in continuous operation, which reduces the temperature fluctuations of the hot water which are inevitable when the burner 1 is operated in cycles, to an acceptable level.
  • the store 19 is first reloaded.
  • the reloading operation is triggered and ended by the temperature controller 34 in the store 19.
  • the reversing valve 37 is in a central position, so that the stores 14 and 19 are connected via the cold water connecting line 36. Since the stores 14 and 19 are permanently connected in their upper region via the hot water connecting line 33, a circulation flow sets in due to the density differences of the respective water contents, which allows the hot water heated in the store 14 to flow into the additional store 19 and the cooler water of the Memory 19 feeds the memory 14 from below.
  • the valve 37 switches back to the initial rest position. The heater operates the heating again or goes into standby mode in summer.

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)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Massaging Devices (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Centrifugal Separators (AREA)
EP90118771A 1989-10-04 1990-09-29 Dispositif pour commander le fonctionnement du chauffe-eau rapide pendant la distribution d'eau sanitaire. Expired - Lifetime EP0421312B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2295/89A AT393316B (de) 1989-10-04 1989-10-04 Verfahren zum steuern des durchlaufbetriebes bei brauchwasserzapfung an einem wandheizgeraet und vorrichtung zur durchfuehrung des verfahrens
AT2295/89 1989-10-04

Publications (3)

Publication Number Publication Date
EP0421312A2 true EP0421312A2 (fr) 1991-04-10
EP0421312A3 EP0421312A3 (en) 1991-09-04
EP0421312B1 EP0421312B1 (fr) 1993-09-29

Family

ID=3531706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118771A Expired - Lifetime EP0421312B1 (fr) 1989-10-04 1990-09-29 Dispositif pour commander le fonctionnement du chauffe-eau rapide pendant la distribution d'eau sanitaire.

Country Status (3)

Country Link
EP (1) EP0421312B1 (fr)
AT (2) AT393316B (fr)
DE (2) DE4031187A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105805941A (zh) * 2016-05-23 2016-07-27 珠海格力电器股份有限公司 一种壁挂炉
DE102018210071A1 (de) * 2018-06-21 2019-12-24 Robert Bosch Gmbh Heizgerät sowie Heizsystem mit einem Heizgerät
US11029039B2 (en) * 2016-11-25 2021-06-08 Noritz Corporation Heating and hot water supplying device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142547C2 (de) * 1991-12-21 1993-11-25 Bosch Gmbh Robert Heizgerät für Raumheizung und Brauchwasserbereitung
DE4308941C2 (de) * 1993-03-19 2000-08-31 Harald Wolf Anordnung zur Warmwasserbereitstellung für mit Gaswandgeräten beheizte Durchlaufspeicher
DE19751515C2 (de) † 1997-11-21 1999-12-02 Grundfos A S Bjerringbro Baueinheit für eine Kompaktheizungsanlage
CN104633943B (zh) * 2014-12-30 2019-03-26 广东自助者管道科技有限公司 一种燃气热水器管道开关盒安装结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1753298A1 (de) * 1967-02-09 1971-07-08 Fonderie Soc Gen De Haushalts-Warmwasserbereiter
DE2201628A1 (de) * 1972-01-14 1973-07-19 Ctc Gmbh Temperaturgesteuerte warmwasserbereitungsanlage
EP0098450A2 (fr) * 1982-07-02 1984-01-18 Joh. Vaillant GmbH u. Co. Source de chaleur chauffée par combustible
DE3714968A1 (de) * 1986-05-03 1987-11-05 Vaillant Joh Gmbh & Co Warmwasserversorgungsanlage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1753298A1 (de) * 1967-02-09 1971-07-08 Fonderie Soc Gen De Haushalts-Warmwasserbereiter
DE2201628A1 (de) * 1972-01-14 1973-07-19 Ctc Gmbh Temperaturgesteuerte warmwasserbereitungsanlage
EP0098450A2 (fr) * 1982-07-02 1984-01-18 Joh. Vaillant GmbH u. Co. Source de chaleur chauffée par combustible
DE3714968A1 (de) * 1986-05-03 1987-11-05 Vaillant Joh Gmbh & Co Warmwasserversorgungsanlage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105805941A (zh) * 2016-05-23 2016-07-27 珠海格力电器股份有限公司 一种壁挂炉
US11029039B2 (en) * 2016-11-25 2021-06-08 Noritz Corporation Heating and hot water supplying device
DE102018210071A1 (de) * 2018-06-21 2019-12-24 Robert Bosch Gmbh Heizgerät sowie Heizsystem mit einem Heizgerät

Also Published As

Publication number Publication date
EP0421312B1 (fr) 1993-09-29
ATE95294T1 (de) 1993-10-15
DE4031187A1 (de) 1991-04-18
DE59002916D1 (de) 1993-11-04
AT393316B (de) 1991-09-25
ATA229589A (de) 1991-02-15
EP0421312A3 (en) 1991-09-04

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