EP2573471A1 - Procédé de production d'eau chaude et eau pour chauffage ambiant et système de chaudière associé - Google Patents

Procédé de production d'eau chaude et eau pour chauffage ambiant et système de chaudière associé Download PDF

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Publication number
EP2573471A1
EP2573471A1 EP12008585A EP12008585A EP2573471A1 EP 2573471 A1 EP2573471 A1 EP 2573471A1 EP 12008585 A EP12008585 A EP 12008585A EP 12008585 A EP12008585 A EP 12008585A EP 2573471 A1 EP2573471 A1 EP 2573471A1
Authority
EP
European Patent Office
Prior art keywords
water
domestic
branch
temperature
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.)
Withdrawn
Application number
EP12008585A
Other languages
German (de)
English (en)
Inventor
Flavio Chiavetti
Alessandro Zampetti
Charles Pele
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.)
Merloni Termosanitari SpA
Ariston SpA
Original Assignee
Merloni Termosanitari SpA
Ariston Thermo SpA
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 Merloni Termosanitari SpA, Ariston Thermo SpA filed Critical Merloni Termosanitari SpA
Publication of EP2573471A1 publication Critical patent/EP2573471A1/fr
Withdrawn legal-status Critical Current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
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F24D3/082—Hot water storage tanks specially adapted therefor
    • 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
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/08—Storage tanks

Definitions

  • the present invention refers to techniques for the production of domestic hot water in boiler systems.
  • the invention has been developed paying particular attention to possible application of the same in storage type boilers, specifically in boilers comprising a storage tank and a plate exchanger positioned downstream of the tank.
  • Boiler systems for domestic type installations are usually able to supply heated water to a hydraulic circuit for ambient heating and heated water to the sanitary fixtures, when required by the latter.
  • boilers with so-called instantaneous heating are mainly used, i.e. boilers which, via burners, heat the domestic water as and when it is required.
  • said boilers can only supply a limited quantity of water at the required temperature. Furthermore the water tapped is not hot right from the start, and the user has to run a certain amount of water before obtaining water at the desired temperature. Therefore storage boilers are also used, in which water is conveyed to a tank where it is kept warm, in order to provide a larger amount of water ready for use when required.
  • the European patent EP 0 778 450 describes a storage boiler, operating according to the process known as "Delta", which functions with a small storage tank (roughly with a volume of less than 10 litres).
  • Said boiler system shown in Figure 1 , comprises a heat generator 1, having a combustion chamber 2, a gas burner 3 and a pipe 4 exposed to flames and/or gases generated by the burner.
  • the water to be heated runs through the pipe 4 which constitutes with the burner 3 a main heat exchanger.
  • a circulation pump 5 is provided, connected to the pipe 4, while a duct 6 forms, together with the pipe 4 and the pump 5, a closed domestic water heating circuit.
  • a stretch of this duct 6 constitutes the primary circuit of an auxiliary heat exchanger E.
  • a flow rate safety device 25 is located upstream of the pump 5.
  • the boiler system of Figure 1 furthermore comprises a tapping circuit, having a cold water inlet 7, a hot water outlet 8, equipped with a tap 18, and a section of duct 9 which constitutes the secondary circuit of the auxiliary heat exchanger E.
  • Said auxiliary heat exchanger E comprises a tank 10 to contain a small supply of domestic water.
  • the tank 10 is crossed by a coil 11 forming part of the above-mentioned section of duct 6.
  • the tank 10 is connected at a low point 12 to the cold water inlet 7 and, at a higher point 13, to a branch of the hot water outlet 8.
  • the auxiliary heat exchanger E furthermore comprises a direct plate heat exchanger 14 having two channels 15 and 16, part of the sections of duct 6 and 9 respectively, in reciprocal thermal contact and counterflow.
  • the tank 10 and the direct heat exchanger 14 are therefore mounted in series, the water circulated via the pump 5 passing through the coil 11 and the channel 15 in the domestic water heating circuit in the above order. Furthermore, in section 9 of the tapping circuit, the water drawn off by the tap 18 passes through the channel 16 and the volume of the tank 10 in the above order.
  • Figure 1 also shows a source of domestic cold water under pressure 17, connected to the cold water inlet 7, a section of ambient heating circuit 19, comprising radiators 20, which is fitted in parallel on the assembly consisting of the pipe 4 and pump 5, one of the connections of said section 19 to this assembly consisting of a three-way valve 21 with two positions, which allows said assembly to be selectively connected to the section of duct 6, i.e. to the domestic water heating branch, and to the section of circuit 19, i.e. to the ambient heating.
  • a safety valve 22, connected to the hot water outlet 8, a flow meter 23 mounted on the cold water inlet 7 and a temperature probe 24 mounted in the tank 10 are also provided.
  • This type of boiler differs from the others due to its particular method of producing domestic hot water, which entails the simultaneous use of a plate exchanger 14 and a small storage unit, i.e. the tank 10 with low exchange power coil 11.
  • the basic operating logic implemented via an electronic board for control of the boiler, comprises two modes:
  • the object of the present invention is to provide a solution to improve boiler management in terms of user interaction and control for the purposes of energy saving.
  • the present invention can be proposed in terms of both process and system.
  • the process and system proposed are based essentially on the implementation of procedures based on the management, in the boiler system electronic control unit, of signals determined by the system measuring devices and by setting signals determined by devices of selection that can be performed by the user.
  • Figure 2 shows a base drawing of a boiler system analogous to the system of Figure 1 in which, therefore, the same references indicate components with equal or analogous function.
  • the reference number 50 highlights an electronic control unit for control of the boiler system; said unit is configured to implement the process according to the invention, which will be described in detail below.
  • Figure 2 highlights the flow rate and temperature measurement signals provided by the flow meter 23 and by the probe 24 respectively to said control unit, and the selection means 51 to enter a temperature set by the user T s , as set point for the domestic water temperature control T, at the outlet 18.
  • the outlet of the control unit 50 which controls the diverter valve 21 is also shown. Said devices exchange signals with the electronic control unit 50 in order to adapt the calorific power generated by the boiler to the flow rates and temperatures detected.
  • Said control unit 50 preferably comprises a microprocessor and implements PID type temperature controls.
  • control unit 50 is configured to implement an energy recovery process in the boiler system of Figure 2 .
  • the three-way valve 21 is positioned so as to convey the hot water to the circuit 19, and then to the radiators 20.
  • the burner 3 is switched off, the three-way valve 21 remains set towards the ambient heating circuit 19 and the pump 5 remains on for a certain time (a few minutes) in order to dissipate towards the radiators 20 the heat still stored in the combustion chamber of the burner 3.
  • the energy recovery process proposed begins at the end of the heating demand 103, i.e. when the burner is switched off after bringing the heating water for the radiators 20 to a sufficient temperature to obtain the desired ambient temperature, set for example via the selection means 51.
  • a check is therefore performed to ascertain whether the three-way valve 21 is set towards the section 19 and therefore towards the heating circuit.
  • step 110 represents acquisition of the desired ambient heating temperature T risc in the control unit 50.
  • Said temperature T risc is usually set and controlled by means of the thermostat system normally available for control of the ambient heating temperature, with which the control unit 50 therefore communicates.
  • Step 115 represents acquisition of the temperature T acc of the domestic water in the storage tank 10 by the probe 24.
  • a subsequent step 120 for comparison of said temperatures T risc and T acc if the water inside the heating circuit 19 has a heating temperature T risc greater or greater by a preset temperature difference n, for example n degrees °C (where n is not necessarily a whole number), than the temperature T acc of the storage tank 10, in step 130 the three-way valve 21 is immediately set towards the domestic water heating circuit 6.
  • the heat still stored in the combustion chamber of the burner 3 is thus conveyed into the storage tank 10. This avoids multiple ignitions of the burner 3 to restore the temperature of the storage tank 10, as the heat already present inside the boiler is exploited without switching on the burner 3.
  • the control unit 50 is therefore furthermore configured to perform a subsequent step 140 in order to check that the temperature T acc of the storage tank 10 does not exceed a temperature limit value T lim .
  • the control unit 50 deactivates the energy recovery process 100, resetting the valve 21 towards the section 19 of the ambient heating circuit.
  • Said energy recovery process 100 is suited not only to the system of Figure 2 , but can also be applied to ordinary boilers with storage tank, including large-size boilers.
  • a second innovative aspect of the solution described here concerns implementation, in the control unit 50, of a process for management of the tapping of small amounts of domestic water from the boiler system of Figure 2 .
  • the burner 3 may come on unnecessarily, as the hot water contained in the storage tank 10 could be sufficient to meet the small tapping.
  • a process is therefore scheduled, shown schematically in the flow chart of figure 4 , indicated overall by the reference number 200.
  • Said process for management of the tapping of small amounts of domestic water entails measurement, in step 205, of the flow rate P by means of the flow meter 23.
  • Said measurement step 205 is performed continuously at periodic intervals.
  • Test step 210 then checks whether the flow meter 23 detects tapping at a low flow rate and for a short period of time, i.e. whether the measurement performed by the flow meter 23 records flow rate and duration values - understood as duration of the signal generated by the flow meter - lower than pre-set reference values.
  • the tapping flow rate indicated by the flow meter 23 below which the function is active can be 4 litres/minute and lasts until the temperature T acc of the water in the tank 10, read by the probe 24, drops to a value lower by a pre-set temperature difference (e.g. 2°C) than the temperature value set by the user T s . If not, in step 220 the burner 3 is switched on.
  • a pre-set temperature difference e.g. 2°C
  • step 230 checks whether the temperature T acc of the tank 10 is lower, or lower by a given temperature difference m (where m is not necessarily a whole value), for example m degrees °C, than the temperature T s set by the user. If so, the system proceeds to step 220 for switch-on of the burner 3. If not, i.e. if the domestic water in the tank 10 is hot enough, the control returns to step 205 to check the flow rate.
  • Said procedure for management of small tappings of domestic water therefore avoids unnecessary ignitions of the burner, neutralising consequences on the quantity of hot water available to the user.
  • the procedure for management of small tappings of domestic water is suitable not only for the system of Figure 2 , but can be applied to all systems that comprise a flow meter and accumulation tank.
  • a stand-by operating mode is implemented in the control unit 50.
  • the storage tank 10 in boiler systems of the type shown in Figure 1 is kept at a temperature T acc equal to a temperature T, set by the user, by means of a selection knob 51 or other similar selection means. This means that, for twenty-four hours a day, the storage tank 10 contains water at the temperature T, considered optimal for use.
  • the control unit 50 is therefore equipped, in a known way, with a timer function which can be set by the user.
  • Said timer function allows the user to set the timebands in which he wishes to maintain the storage tank 10 at optimal temperature, i.e. the temperature T, set by the user, and the timebands, typically at night, when this is not necessary, permitting adoption of a "reduced" temperature T rid for the domestic water in the storage tank 10.
  • FIG. 5 shows schematically, via a flow chart, a stand-by mode operating procedure, indicated overall by reference number 300, in which the electronic control unit 50 is configured to monitor, via the flow rate measured by the flow meter 23, the water tapped by the user.
  • Step 305 indicates control of the temperature T acc of the tank 10 according to the timing procedure, i.e. at the temperature T s or T rid depending on the time of day.
  • the flow rate P is acquired by the flow meter 23.
  • Comparison step 315 checks whether said flow rate P is equal to zero. If so, a check 317 is performed to ascertain whether the flow rate P remains zero for a time t greater than or equal to a pre-set time t, for example twenty-four hours.
  • an operation 320 is performed to disable the timing function and, in step 325, the temperature of the storage tank 10 is set so as to maintain the water contained in it at the reduced temperature T rid , regardless of the hourly programming set by the user for the temperature T s of the tank 10.
  • the storage tank 10 is set to stand-by mode, minimising the losses and therefore the ignitions of the burner 3.
  • step 325 the control is re-set to step 310 to check the flow rate P, so that when the flow meter 23 measures a first tapping, after the timer function has been disabled, this can be considered an indication that the house is inhabited again; the control then returns to step 305 for control of the temperature T acc according to the timing function, and the control unit 50 is then enabled to restore the timebands set by the user.
  • an intelligent restore (or "smart charge”) procedure is implemented in the control unit 50.
  • the process for restoring the temperature of the storage tank 10 involves the burner 3 being switched on to rapidly increase the temperature T acc of the tank and therefore rapidly reach the temperature T, set by the user.
  • control unit 50 is suitable for performing at least two modes for restoring the temperature in the storage tank 10, i.e.:
  • Said intelligent restore process is suitable not only for the system of Figure 1 or 2 , but can be applied to all boiler systems with storage, including large-size systems.
  • Figure 6 shows a base drawing of a boiler system which is a variation on the system of Figure 2 , in which equal references indicate components with equal or analogous function.
  • Said boiler system is characterised by the adoption of a mixer valve 30.
  • Said valve 30 is a three-way valve, the outlet of which is connected to the hot water outlet 8; an inlet of the valve 30 is connected to the high point 13 of the tank 10, while the other inlet is connected to a coupling 31, which is connected to the cold water inlet 7.
  • the mixer valve 30, which can be of any known type, is provided to maintain the water inside the tank 10 at a temperature higher than that required by the user at the tap 18. In practice this permits "multiplication" of the storage capacity since, during tapping, the very hot water present in the tank 10 can be mixed by the valve 30 with cold water coming from the source of cold water 17.
  • an approach of this type has the effect of increasing the storage heat losses towards the environment (due to the high storage temperature of the water) and increasing energy consumption.
  • an auto-learning mode is proposed, which allows the boiler system to be controlled in an auto-adaptive manner.
  • the value of the difference ⁇ T which permits "multiplication" of the water storage capacity, is not fixed a priori but is adapted (or modified) according to the consumption of water by the user.
  • the consumption (for example daily) of domestic hot water by the user can be estimated, for example, on the basis of the information provided by the flow meter 23 (flow rate) and the probe 24 (tapping temperature).
  • This datum can be compared with the standard daily consumption values, established by law, and different "classes" of consumption of domestic water can be created.
  • the parameter that regulates the temperature difference ⁇ T of the water between tank 10 and tapping point 18 can be modified: for example, the more hot water consumed by the user, the more the value of the difference ⁇ T can be increased, and vice versa.
  • standard daily consumption is organised into "classes" of consumption of domestic water and the temperature difference ⁇ T is modified according to the consumption class into which said estimated consumption falls, the consumption class of the user being learnt via the information on the flow rate and tapping temperature.
  • Adaptation of the value of ⁇ T can be performed directly by the boiler control system, programmed for the purpose, which will be provided with non-volatile memory means which store, in a per se known manner, the information relating to the above-mentioned various domestic water consumption classes, which express different tapping profiles corresponding to the typical requirements of more or less numerous groups of persons.
  • control and auto-learning process described are also applicable outside the Delta system, i.e. in any system that comprises a storage tank, a flow meter and a mixer valve at the outlet.
  • FIG. 7 shows schematically a boiler system with storage tank suitable for implementing some of the above-mentioned processes.
  • the same reference numbers are used as in the preceding figures to indicate elements technically equivalent to those described previously, with the addition of the letter "a”.
  • the boiler according to the diagram of Figure 7 does not have a direct plate exchanger 14 and temperature probe 26, typical of the Delta system, and there is no flow meter 23, the latter not being strictly necessary, since the boiler normally operates in domestic water mode only when the probe 24a relative to the storage tank 10a detects a value below the one required by the user.
  • the boiler of Figure 7 is not suitable for implementation of the small tapping control procedure and the stand-by mode operating procedure, but is suitable for implementing the other procedures described, i.e. the energy recovery procedure, the smart charge procedure and the auto-learning mode.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
EP12008585A 2007-08-16 2008-08-11 Procédé de production d'eau chaude et eau pour chauffage ambiant et système de chaudière associé Withdrawn EP2573471A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000602A ITTO20070602A1 (it) 2007-08-16 2007-08-16 "procedimento per la produzione di acqua calda sanitaria e acqua per riscaldamento ambiente, e relativo sistema a caldaia
EP08789089A EP2201303A2 (fr) 2007-08-16 2008-08-11 Procédé pour la production d'eau chaude domestique et d'eau pour chauffage ambiant, et système de chaudière associé

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP08789089.3 Division 2008-08-11

Publications (1)

Publication Number Publication Date
EP2573471A1 true EP2573471A1 (fr) 2013-03-27

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Application Number Title Priority Date Filing Date
EP12008585A Withdrawn EP2573471A1 (fr) 2007-08-16 2008-08-11 Procédé de production d'eau chaude et eau pour chauffage ambiant et système de chaudière associé
EP08789089A Withdrawn EP2201303A2 (fr) 2007-08-16 2008-08-11 Procédé pour la production d'eau chaude domestique et d'eau pour chauffage ambiant, et système de chaudière associé

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08789089A Withdrawn EP2201303A2 (fr) 2007-08-16 2008-08-11 Procédé pour la production d'eau chaude domestique et d'eau pour chauffage ambiant, et système de chaudière associé

Country Status (3)

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EP (2) EP2573471A1 (fr)
IT (1) ITTO20070602A1 (fr)
WO (1) WO2009022226A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018052523A1 (fr) * 2016-09-14 2018-03-22 Lochinvar, Llc Procédés et système de commande basée sur la demande d'une chaudière semi-tubulaire
WO2018052524A1 (fr) * 2016-09-14 2018-03-22 Lochinvar, Llc Procédés et système de commande d'une chaudière semi-tubulaire
DE102018210071A1 (de) * 2018-06-21 2019-12-24 Robert Bosch Gmbh Heizgerät sowie Heizsystem mit einem Heizgerät

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EP3139101A1 (fr) * 2010-06-09 2017-03-08 Delta Systemtechnik GmbH Systeme de reglage, procede de preparation d'un support secondaire et procede de reequipement d'un appartement
US9885484B2 (en) 2013-01-23 2018-02-06 Honeywell International Inc. Multi-tank water heater systems
US20140202549A1 (en) 2013-01-23 2014-07-24 Honeywell International Inc. Multi-tank water heater systems
US20150277463A1 (en) 2014-03-25 2015-10-01 Honeywell International Inc. System for communication, optimization and demand control for an appliance
US10670302B2 (en) 2014-03-25 2020-06-02 Ademco Inc. Pilot light control for an appliance
US9799201B2 (en) 2015-03-05 2017-10-24 Honeywell International Inc. Water heater leak detection system
US9920930B2 (en) 2015-04-17 2018-03-20 Honeywell International Inc. Thermopile assembly with heat sink
US10132510B2 (en) 2015-12-09 2018-11-20 Honeywell International Inc. System and approach for water heater comfort and efficiency improvement
US10119726B2 (en) 2016-10-06 2018-11-06 Honeywell International Inc. Water heater status monitoring system
IT201700088388A1 (it) * 2017-08-01 2019-02-01 Ariston Thermo Spa Metodo di caratterizzazione di uno scaldaacqua ad accumulo e di apprendimento del profilo dei prelievi
GB2568947B (en) * 2017-12-01 2020-04-22 Idzv Ltd A combi-boiler device
IT201800003046A1 (it) * 2018-02-26 2019-08-26 Riello Spa Unita' di riscaldamento per riscaldare acqua di riscaldamento di ambienti ed acqua sanitaria
GB2573780A (en) * 2018-05-16 2019-11-20 Canetis Tech Limited A heating system for providing hot fluid, and a method of operating a heater
US10969143B2 (en) 2019-06-06 2021-04-06 Ademco Inc. Method for detecting a non-closing water heater main gas valve
WO2024008251A2 (fr) 2022-07-05 2024-01-11 Bruse Gmbh & Co. Kg Procédé de commande d'arrivée d'eau chaude et de chauffage

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EP0356609A1 (fr) * 1988-08-31 1990-03-07 Landis & Gyr Business Support AG Générateur de valeur de consigne pour régulateur d'accumulateur d'eau chaude sanitaire
DE4203127A1 (de) * 1991-02-04 1992-08-06 Vaillant Joh Gmbh & Co Eingabeeinrichtung
EP0740113A1 (fr) * 1995-04-24 1996-10-30 Apparatenfabriek Warmtebouw B.V. Chaudière mixte avec performance améliorée
DE19617116A1 (de) * 1995-04-26 1996-10-31 Vaillant Joh Gmbh & Co Warmwasserbereiter
EP0778450A1 (fr) 1995-12-08 1997-06-11 Chaffoteaux Et Maury Perfectionnements aux appareils générateurs d'eau chaude sanitaire
DE10049597A1 (de) * 2000-10-06 2002-04-11 Oliver Fasterding Bedarfsabhängig gesteuerte Umwälzpumpe durch Analyse des Temperaturanstieges in Warmwassernetzen

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EP0356609A1 (fr) * 1988-08-31 1990-03-07 Landis & Gyr Business Support AG Générateur de valeur de consigne pour régulateur d'accumulateur d'eau chaude sanitaire
DE4203127A1 (de) * 1991-02-04 1992-08-06 Vaillant Joh Gmbh & Co Eingabeeinrichtung
EP0740113A1 (fr) * 1995-04-24 1996-10-30 Apparatenfabriek Warmtebouw B.V. Chaudière mixte avec performance améliorée
DE19617116A1 (de) * 1995-04-26 1996-10-31 Vaillant Joh Gmbh & Co Warmwasserbereiter
EP0778450A1 (fr) 1995-12-08 1997-06-11 Chaffoteaux Et Maury Perfectionnements aux appareils générateurs d'eau chaude sanitaire
DE10049597A1 (de) * 2000-10-06 2002-04-11 Oliver Fasterding Bedarfsabhängig gesteuerte Umwälzpumpe durch Analyse des Temperaturanstieges in Warmwassernetzen

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018052523A1 (fr) * 2016-09-14 2018-03-22 Lochinvar, Llc Procédés et système de commande basée sur la demande d'une chaudière semi-tubulaire
WO2018052524A1 (fr) * 2016-09-14 2018-03-22 Lochinvar, Llc Procédés et système de commande d'une chaudière semi-tubulaire
CN109690206A (zh) * 2016-09-14 2019-04-26 烈骑有限责任公司 用于组合锅炉的基于需求的控制的方法和系统
CN109690205A (zh) * 2016-09-14 2019-04-26 烈骑有限责任公司 用于控制组合锅炉的方法和系统
US10612795B2 (en) 2016-09-14 2020-04-07 Lochinvar, Llc Methods and system for demand-based control of a combination boiler
US10914475B2 (en) 2016-09-14 2021-02-09 Lochinvar, Llc Methods and system for controlling a combination boiler
CN109690205B (zh) * 2016-09-14 2021-06-25 烈骑有限责任公司 用于控制组合锅炉的方法和系统
CN109690206B (zh) * 2016-09-14 2021-06-25 烈骑有限责任公司 用于组合锅炉的基于需求的控制的方法和系统
US11603996B2 (en) 2016-09-14 2023-03-14 Lochinvar, Llc Methods and system for controlling a combination boiler
US11828474B2 (en) 2016-09-14 2023-11-28 Lochinvar, Llc Methods and system for demand-based control of a combination boiler
DE102018210071A1 (de) * 2018-06-21 2019-12-24 Robert Bosch Gmbh Heizgerät sowie Heizsystem mit einem Heizgerät

Also Published As

Publication number Publication date
WO2009022226A3 (fr) 2012-05-31
WO2009022226A2 (fr) 2009-02-19
ITTO20070602A1 (it) 2009-02-17
EP2201303A2 (fr) 2010-06-30

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