EP0719989A1 - Wandgasheizkessel mit kleinem Brauchwasserspeicher - Google Patents

Wandgasheizkessel mit kleinem Brauchwasserspeicher Download PDF

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Publication number
EP0719989A1
EP0719989A1 EP95402958A EP95402958A EP0719989A1 EP 0719989 A1 EP0719989 A1 EP 0719989A1 EP 95402958 A EP95402958 A EP 95402958A EP 95402958 A EP95402958 A EP 95402958A EP 0719989 A1 EP0719989 A1 EP 0719989A1
Authority
EP
European Patent Office
Prior art keywords
mini
exchanger
water
storage tank
sanitary
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
EP95402958A
Other languages
English (en)
French (fr)
Other versions
EP0719989B1 (de
Inventor
Mohamed Benabdelkarim
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.)
Saunier Duval Eau Chaude Chauffage SDECC SA
Original Assignee
Saunier Duval Eau Chaude Chauffage SDECC SA
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 Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Publication of EP0719989A1 publication Critical patent/EP0719989A1/de
Application granted granted Critical
Publication of EP0719989B1 publication Critical patent/EP0719989B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • 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
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply

Definitions

  • the present invention relates to wall-mounted mixed gas boilers whose domestic hot water is produced by means of a low capacity mini-storage tank.
  • wall-mounted gas boilers are designated as mixed boilers if they can supply a heating circuit but also produce domestic hot water.
  • essentially two types of generators are used, either an instant heat exchanger which supplies hot water on demand in unlimited quantity, or a storage tank which stores a certain amount of hot water preheated by the device.
  • an exchanger with two separate circuits, one being a heating circuit and the other a sanitary circuit, - or by exchanger with a single associated circuit to a small heat exchanger.
  • This is supplied with heating water by a circuit comprising a circulator and, on the flow side of the boiler, a three-way valve. This valve is hydrostatically controlled by a pressure reducing device when there is drawing of domestic water.
  • This production method is very economical for the maximum possible service and it has the advantage of being able to supply domestic hot water in unlimited quantities.
  • An intermediate system which consists in associating an instantaneous mixed boiler with an associated hot water storage tank.
  • a pump intended for domestic hot water and controlled by the tank's aquastat, draws water from it and sends it to the boiler on the domestic hot water circuit.
  • the instantaneous mixed boiler then behaves as in the case of a domestic hot water undershoot and the reheated water is sent back to the tank.
  • the Applicant has therefore endeavored to find a solution which combines the advantages of both instantaneous production and production by accumulation, while limiting the disadvantages of each, in particular as regards the variations in temperature of the water drawn off, linked to transitional phases.
  • the subject of the invention is therefore a wall-mounted mixed gas boiler comprising a heating body supplying a heating circuit equipped with radiators and also comprising a main sanitary exchanger heated by said heating body, to which cold water arrives and which distributes domestic hot water by a tap, a three-way valve directing the water from the heating circuit to a short sanitary circuit, during a drawing, boiler according to which a low capacity mini-storage tank is interposed in the starting pipe distributing hot water from the main sanitary exchanger to the drawing pipe, an additional thermal supply device intended to compensate for heat losses was provided for heating the mini-tank.
  • the additional heat supply device consists of a small heat exchanger for heating the mini-tank mounted in the short sanitary circuit, between the three-way valve and a pipe for the return of heating water. .
  • the additional thermal supply device is constituted by a small electrical resistance.
  • the invention applies to two variants of mixed boilers, boilers with two circuits and boilers with a single circuit.
  • the mini storage tank is connected by the domestic water outlet pipe directly to the main domestic heat exchanger located in the appliance's heating body.
  • the mini storage tank is connected by the conduit for the flow of domestic water to the main domestic heat exchanger placed outside the appliance's heating body, the short domestic circuit also serving said main sanitary exchanger.
  • the duct distributing the hot water coming from the main sanitary exchanger splits into two rods which penetrate into the accumulator mini-balloon through its base and lead respectively to the lower part and to the upper part of the mini-balloon, the conduit of drawdown being provided at the top of the mini-balloon.
  • FIG. 1 illustrates an instantaneous mixed boiler with two circuits, equipped with a mini storage tank.
  • the boiler comprises a heating body 1 heated by a burner 2 supplied with gas by means of a gas solenoid valve not shown.
  • the heating body supplies heating radiators 3 by a heating flow circuit 4 on which a three-way valve 5 is inserted.
  • the pipe 6 returns to the heating body downstream of the radiators, the water circulating in the direction of the arrows thanks to a circulation pump 14.
  • the heating body 1 is also crossed by a main domestic heat exchanger 7 supplied by a cold water inlet pipe 8.
  • the heat exchanger 7 distributes domestic hot water, by a departure 9, to a mini-balloon accumulator 10 with a capacity of less than 20 liters, depending on the power of the device.
  • domestic hot water is withdrawn from the mini-tank by the drawing pipe 11 carrying a tap, a drawing detector 17 for drawing a sanitary flow being provided upstream
  • the boiler operates as follows:
  • the three-way valve 5 When the user opens the tap and the requested domestic hot water flow is higher than the threshold flow, then the three-way valve 5 is switched from its previous position for which it supplied the radiators 3, to the other position for which the water of circuit 4 passes through the short circuit 12.
  • the burner 2 is lit and the domestic water contained in the mini-tank 10 is replaced with hot water by the main domestic exchanger 7 and the conduit 9.
  • the boiler behaves exactly like an instantaneous mixed boiler, with no associated tank. All the hot water from the exchanger 7 therefore passes through the mini-balloon 10, the water capacity of which makes it possible to absorb, until canceled, the temperature variations at the outlet of said main sanitary exchanger. It is from the data supplied by the sensor 15 that the regulation of the domestic hot water temperature is ensured, the sensor 16 of the mini-cylinder being inhibited.
  • valve 5 switches the circuit 4 to the radiators 3, in winter, or the boiler stops in summer. Since the mini-tank 10 was supplied directly with hot water from the main domestic heat exchanger 7, it is not necessary to continue reheating the water in the mini-balloon unlike an accumulation system.
  • the average temperature of the mini-tank 10 measured by the sensor 16 becomes below a threshold. Ignition of burner 2 at minimum power is then controlled, as is switching from circuit 4 to circuit 12 in winter, or starting the pump in summer. Thanks to the small exchanger 13, the mini-tank is therefore heated and when the water has again reached its set temperature, the sensor 16 controls the shutdown of the burner and the pump in summer or the switching of the boiler to heating in winter. The sensor 16 thus functions as a balloon aquastat.
  • Another case is that of drawing water at low flow rates or of very short duration. If the flow rate is lower than the threshold flow rate, part of the water in the mini-balloon is destocked without necessarily having the burner ignited. On the other hand, if the temperature of the water in the mini-balloon drops below the threshold temperature, there is control of the burner as in the case of drawing at a higher flow rate. But if the drawing-off time is short, taking into account the water capacity of the mini-balloon, there will be no need to reheat it via the small exchanger 13.
  • the heating exchanger is replaced by a small electrical resistance 18 supplied by the network, independently of the short sanitary circuit.
  • This resistance is sufficient to compensate for heat losses of the order of 20 W to 100 W and the sensor 16 of the mini-ball 10, which behaves like an aquastat, controls the supply of this resistance when the water temperature is dropped below a set threshold, and cuts it off when the water is heated above another given threshold.
  • FIG. 3 Another embodiment is shown in Figure 3. It shows an installation of an instantaneous mixed wall boiler with a single circuit with also a mini accumulation tank.
  • the same elements have the same references as in FIG. 1.
  • the heating body 1 does not contain a main sanitary exchanger. This is this time arranged outside the heating body. It is presented as a small exchanger 7 with cup or compact plate supplied by a cold water inlet pipe 8. It distributes domestic hot water to the mini-tank 10 through the outlet pipe 9.
  • mini-ball boilers have undeniable economic advantages. Indeed a mini-balloon is more compact than a normal balloon and can therefore be integrated into the standard size of a boiler instant. In addition it costs less. Similarly, its small exchanger 13 is less bulky and also less expensive than that placed in the tank of 50 liters or more. In addition, the mini-accumulation boiler saves on the sanitary recirculation pump.
  • a mini-storage tank 10 of the type presented in FIG. 4 is preferably used. It is a tank of lower capacity, for example of the order of four liters, elongated.
  • the outlet pipe 9 which distributes the domestic hot water splits into two rods 9a and 9b which enter the mini-balloon through its base.
  • the rod 9a opens at the bottom while the rod 9b develops over the entire height and opens at the top at a short distance from the drawing duct 11 provided at the top of the mini-balloon.
  • a low zone A which is a mixing zone into which the rod 9a arrives
  • an intermediate zone B of stratification and another zone C of mixing with the upper part into which the rod 9b arrives, near the duct 11.
  • the exchanger 13 for the additional thermal input is located in the central part of the balloon.

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)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Cookers (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP95402958A 1994-12-29 1995-12-28 Wandgasheizkessel mit kleinem Brauchwasserspeicher Expired - Lifetime EP0719989B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9415855 1994-12-29
FR9415855A FR2728960A1 (fr) 1994-12-29 1994-12-29 Chaudiere murale mixte a gaz avec un mini-ballon accumulateur d'eau chaude sanitaire

Publications (2)

Publication Number Publication Date
EP0719989A1 true EP0719989A1 (de) 1996-07-03
EP0719989B1 EP0719989B1 (de) 2000-08-02

Family

ID=9470402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402958A Expired - Lifetime EP0719989B1 (de) 1994-12-29 1995-12-28 Wandgasheizkessel mit kleinem Brauchwasserspeicher

Country Status (5)

Country Link
EP (1) EP0719989B1 (de)
AT (1) ATE195175T1 (de)
DE (1) DE69518216T2 (de)
ES (1) ES2151038T3 (de)
FR (1) FR2728960A1 (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510877A1 (de) * 1994-03-25 1995-10-05 Vaillant Joh Gmbh & Co Wasserheizer mit einem von einem Brennwertheizgerät beheizten Primärwärmetauscher
EP0828117B1 (de) * 1996-09-06 2002-10-16 Robert Bosch Gmbh Verfahren zur Brauchwasserbereitstellung in einem kombinierten System
FR2824627A1 (fr) 2001-05-09 2002-11-15 Sdecc Dispositif de production d'eau chaude sanitaire a partir d'un miniballon a maintien electrique et d'une chaudiere mixte a gaz
EP1139032A3 (de) * 2000-03-31 2003-01-08 Robert Bosch Gmbh Heizungsanlage mit Gastherme, Wärmeübertrager, Heizwasser-Kreislauf und Trinkwasser-Speicher
WO2003076859A1 (fr) * 2002-03-14 2003-09-18 Dominique Seguy Ballon d'eau chaude sanitaire muni d'une canne centrale, dispositif muni d'un tel ballon et procede associe
WO2004074744A1 (en) * 2003-02-21 2004-09-02 Riello S.P.A. Gas boiler
ITTV20110157A1 (it) * 2011-11-10 2013-05-11 Ct Tecnico Snc Di Biz Luca E Se Rgio Caldaia
CN104676873A (zh) * 2015-01-20 2015-06-03 芜湖美的厨卫电器制造有限公司 燃电一体式热水器
CN104807068A (zh) * 2014-01-24 2015-07-29 樱花卫厨（中国）股份有限公司 卫浴低温加热设备的智能控制方法
ITUB20155430A1 (it) * 2015-11-10 2017-05-10 Radiant Bruciatori S P A Dispositivo a caldaia da riscaldamento per ambienti ed acqua sanitaria

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1253539Y (es) * 2020-06-23 2021-01-04 Sanz San Cristobal Juan Carlos Dispositivo para agua caliente sanitaria
CN113719882A (zh) * 2021-09-03 2021-11-30 沈阳恒久安泰环保与节能科技有限公司 一种三端一体化多重反馈相变储能装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551187A1 (fr) * 1983-08-26 1985-03-01 Laurent Francois Procede et installation pour la production d'eau chaude sanitaire a partir d'une installation generatrice de chaleur a bruleur
DE8915404U1 (de) * 1989-08-24 1990-12-20 Vießmann, Hans, Dr., 3559 Battenberg Wärmetauscher
EP0427121A2 (de) * 1989-11-07 1991-05-15 Joh. Vaillant GmbH u. Co. Verfahren zur Ermöglichung des sofortigen Zapfens von warmem Brauchwasser

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551187A1 (fr) * 1983-08-26 1985-03-01 Laurent Francois Procede et installation pour la production d'eau chaude sanitaire a partir d'une installation generatrice de chaleur a bruleur
DE8915404U1 (de) * 1989-08-24 1990-12-20 Vießmann, Hans, Dr., 3559 Battenberg Wärmetauscher
EP0427121A2 (de) * 1989-11-07 1991-05-15 Joh. Vaillant GmbH u. Co. Verfahren zur Ermöglichung des sofortigen Zapfens von warmem Brauchwasser

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510877A1 (de) * 1994-03-25 1995-10-05 Vaillant Joh Gmbh & Co Wasserheizer mit einem von einem Brennwertheizgerät beheizten Primärwärmetauscher
EP0828117B1 (de) * 1996-09-06 2002-10-16 Robert Bosch Gmbh Verfahren zur Brauchwasserbereitstellung in einem kombinierten System
EP1139032A3 (de) * 2000-03-31 2003-01-08 Robert Bosch Gmbh Heizungsanlage mit Gastherme, Wärmeübertrager, Heizwasser-Kreislauf und Trinkwasser-Speicher
FR2824627A1 (fr) 2001-05-09 2002-11-15 Sdecc Dispositif de production d'eau chaude sanitaire a partir d'un miniballon a maintien electrique et d'une chaudiere mixte a gaz
WO2003076859A1 (fr) * 2002-03-14 2003-09-18 Dominique Seguy Ballon d'eau chaude sanitaire muni d'une canne centrale, dispositif muni d'un tel ballon et procede associe
FR2837266A1 (fr) 2002-03-14 2003-09-19 Dominique Seguy Ballon d'eau chaude sanitaire muni d'une canne centrale, dispositif de production et de chauffage d'eau chaude sanitaire muni d'un tel ballon et procede associe
WO2004074744A1 (en) * 2003-02-21 2004-09-02 Riello S.P.A. Gas boiler
ITTV20110157A1 (it) * 2011-11-10 2013-05-11 Ct Tecnico Snc Di Biz Luca E Se Rgio Caldaia
CN104807068A (zh) * 2014-01-24 2015-07-29 樱花卫厨（中国）股份有限公司 卫浴低温加热设备的智能控制方法
CN104807068B (zh) * 2014-01-24 2017-12-22 樱花卫厨（中国）股份有限公司 卫浴低温加热设备的智能控制方法
CN104676873A (zh) * 2015-01-20 2015-06-03 芜湖美的厨卫电器制造有限公司 燃电一体式热水器
ITUB20155430A1 (it) * 2015-11-10 2017-05-10 Radiant Bruciatori S P A Dispositivo a caldaia da riscaldamento per ambienti ed acqua sanitaria

Also Published As

Publication number Publication date
DE69518216T2 (de) 2001-03-29
ATE195175T1 (de) 2000-08-15
FR2728960B1 (de) 1997-02-28
EP0719989B1 (de) 2000-08-02
FR2728960A1 (fr) 1996-07-05
DE69518216D1 (de) 2000-09-07
ES2151038T3 (es) 2000-12-16

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