EP0421312B1 - 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
EP0421312B1
EP0421312B1 EP90118771A EP90118771A EP0421312B1 EP 0421312 B1 EP0421312 B1 EP 0421312B1 EP 90118771 A EP90118771 A EP 90118771A EP 90118771 A EP90118771 A EP 90118771A EP 0421312 B1 EP0421312 B1 EP 0421312B1
Authority
EP
European Patent Office
Prior art keywords
accumulator
water
flow
valve
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
EP90118771A
Other languages
German (de)
English (en)
Other versions
EP0421312A2 (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 device for controlling the flow storage operation in a flow storage that can be heated by a heat source for a combination water heater with process water treatment and space heating, in particular for a gas wall heater, with a store with a secondary heat exchanger, by means of which the process water is heated by the heating water and an additional storage tank, the storage tank and the additional storage tank being connected in parallel via a hot water connection line and a cold water connection line, with a tap fitting with water switch and with a three-way valve for switching heating and domestic water operation via a control unit.
  • Start-up operation that starts with the minimum draw-off quantity at the start of the tap and when the full heat exchanger capacity is reached ends, the continuous operation, which follows the thermal start-up and guarantees an unlimited water withdrawal and the reloading operation, which keeps the storage content within the specified limits thermally ready to compensate for the missing heat exchanger output at the start of the tap.
  • 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.
  • Such a memory which is heated via a heating water / process water heat exchanger connected in parallel, has become known, for example, from DE-OS 2201 628.
  • large storage tanks are not particularly advantageous in terms of both construction and heating technology.
  • a flow heater acted upon by the boiler water and a process water storage container are in relation to one another connected in parallel.
  • a circulation control is provided in the hot water connection line between the instantaneous water heater and the storage container to heat the storage container.
  • the process water is withdrawn in certain proportions both from the instantaneous water heater and from the storage tank.
  • This combination makes it possible to withdraw a large amount of water per unit of time at a relatively high outlet temperature during continuous operation.
  • the disadvantage here is that the withdrawal from the instantaneous water heater dominates at the start of the tap, so that the process water at the desired temperature is only available after a start-up phase.
  • This system also requires a relatively large storage container.
  • the present invention is based on the object of specifying a device by means of which hot water can be made available in combination devices, which manages with a minimum of storage space, sensors and actuators, which is characterized by rapid availability, a high outlet temperature constancy and an unlimited withdrawal quantity.
  • a three-way reversing valve in the cold water connection line, which is the water switch in the cold water line is connected downstream and the three-way reversing valve is provided with a valve drive which can be controlled electrically and / or thermally such that when the three-way reversing valve is at rest, the flow direction from the cold water line to the additional reservoir is released, and the flow flow continuously when the tap operation begins to the additional storage is reduced while the flow flow to the storage is increased, the sum of the partial flows to the storage and to the additional storage being constant, the flow direction from the cold water line to the storage is fully released when in the continuous mode and when the three-way reversing valve is in the reload mode the flow direction of the cold water connecting line between the storage and the additional storage is released and, if necessary, the flow direction is blocked by the cold water line.
  • valve drive is connected to a timing element, which the continuous reversal of the part flows during the start of the tap after a defined initial delay, which is dependent on the respective device data, such as storage capacity, heating capacity and the like.
  • 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.
  • the burner 1 is still not shown Devices such as ignition device, flame detection device, etc. assigned.
  • the secondary heat exchanger 17 for example in the form of a smooth coil of copper pipes, is arranged in the store 14, which is designed as a service water store with appropriate insulation.
  • Baffles 18 for flow guidance are fastened coaxially in the smooth tube 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 connection line 33, whereas the cold water line 25 is connected to the cold water connection 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.
  • tap operation ie when hot water is drawn from the tap 24 via a tap fitting, cold water flows through the cold water pipe 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 by the control unit 8 from the motor 10 to the charging circuit.
  • 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 the two.
  • 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 connection 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 in summer mode.

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)
  • Centrifugal Separators (AREA)
  • Massaging Devices (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Selective Calling Equipment (AREA)

Claims (2)

  1. Dispositif pour commander le fonctionnement d'un accumulateur à circulation chauffé par une source de chaleur et faisant partie d'un chauffe-eau combiné servant à la préparation d'eau sanitaire et au chauffage de locaux, notamment d'un appareil de chauffage mural à gaz avec un accumulateur comportant un échangeur de chaleur secondaire assurant le chauffage de l'eau sanitaire par l'eau chaude, et un accumulateur supplémentaire, ces deux accumulateurs étant mis entre eux en parallèle par l'intermédiaire d'une conduite d'eau chaude et d'une conduite d'eau froide, avec un robinet de prise d'eau avec actionneur hydraulique ainsi qu'avec un distributeur 3-voies pour passer de la préparation d'eau sanitaire au chauffage des locaux et inversement, par l'action d'une unité de réglage, caractérisé par le fait que la conduite d'eau froide (36) est munie d'une valve de distribution 3-voies (37) en aval de l'actionneur hydraulique (21), et que la valve de distribution 3-voies (37) est munie d'un actionneur (38) pouvant être commandé par voie électrique et/ou thermique de sorte qu' en position de repos de la valve de distribution (37), l'écoulement dans la conduite d'eau froide (25) vers l'accumulateur supplémentaire (19) est libéré et réduit successivement au début du prélèvement, tandis que l'écoulement vers l'accumulateur (14) est augmenté, la somme des courants partiels vers l'accumulateur (14) et l'accumulateur supplémentaire (19) étant constant, et qu'en position de prélèvement, l'écoulement dans la conduite d'eau froide (25) vers l'accumulateur (14) est complètement dégagé, et qu'en position de recharge, l'écoulement dans la conduite d' eau froide (36) entre l'accumulateur (14) et l'accumulateur supplémentaire (19) est ouvert, l'écoulement depuis la conduite d'eau froide (25) étant éventuellement coupé.
  2. Dispositif suivant la revendication 1, caractérisé par le fait que l'actionneur (38) du distributeur 3-voies est combiné avec un organe temporisateur qui déclenche le changement d'écoulement des courants partiels durant la phase initiale du prélèvement avec un retard initial défini en fonction des caractéristiques de l'appareil concerné telles que capacité d' accumulateur, pouvoir chauffant et similaire.
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
AT2295/89 1989-10-04
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

Publications (3)

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

Families Citing this family (7)

* 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
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
JP6745039B2 (ja) * 2016-11-25 2020-08-26 株式会社ノーリツ 暖房給湯装置
DE102018210071A1 (de) * 2018-06-21 2019-12-24 Robert Bosch Gmbh Heizgerät sowie Heizsystem mit einem Heizgerät

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1520519A (fr) * 1967-02-09 1968-04-12 Fonderie Soc Gen De Installation perfectionnée pour la production d'eau chaude sanitaire
EP0098450B1 (fr) * 1982-07-02 1986-06-18 Joh. Vaillant GmbH u. Co. Source de chaleur chauffée par combustible
DE3714968A1 (de) * 1986-05-03 1987-11-05 Vaillant Joh Gmbh & Co Warmwasserversorgungsanlage

Also Published As

Publication number Publication date
AT393316B (de) 1991-09-25
DE4031187A1 (de) 1991-04-18
EP0421312A2 (fr) 1991-04-10
DE59002916D1 (de) 1993-11-04
ATE95294T1 (de) 1993-10-15
EP0421312A3 (en) 1991-09-04
ATA229589A (de) 1991-02-15

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