EP2017537A2 - Procédé de fonctionnement d'un réservoir de stockage par couches et système d'eau potable - Google Patents

Procédé de fonctionnement d'un réservoir de stockage par couches et système d'eau potable Download PDF

Info

Publication number
EP2017537A2
EP2017537A2 EP20080012357 EP08012357A EP2017537A2 EP 2017537 A2 EP2017537 A2 EP 2017537A2 EP 20080012357 EP20080012357 EP 20080012357 EP 08012357 A EP08012357 A EP 08012357A EP 2017537 A2 EP2017537 A2 EP 2017537A2
Authority
EP
European Patent Office
Prior art keywords
hot water
temperature
storage
charging pump
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.)
Withdrawn
Application number
EP20080012357
Other languages
German (de)
English (en)
Other versions
EP2017537A3 (fr
Inventor
Jürgen Waidner
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2017537A2 publication Critical patent/EP2017537A2/fr
Publication of EP2017537A3 publication Critical patent/EP2017537A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0026—Domestic hot-water supply systems with conventional heating means
    • F24D17/0031—Domestic hot-water supply systems with conventional heating means with accumulation of the heated 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
    • 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
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water

Definitions

  • the invention relates to a method for operating stratified charge accumulators according to the preamble of patent claim 1.
  • Shift-load accumulators are a further development of conventional domestic hot water tanks. Their special feature is that they ensure a high hot water availability with a comparatively small storage volume.
  • Conventional domestic hot water storage tanks often have a storage tank with a heat exchanger coil arranged below, through which a heat transfer medium flows.
  • the storage water contacting this heat exchanger heats up by heat conduction, thereby becoming lighter and rising upwards in the container.
  • a flow roller is set in motion, which gradually detects the entire storage water and gradually heats it up to target temperature.
  • a circulation pump conveys the heat carrier medium.
  • the domestic hot water provided in stratified charge accumulators is withdrawn therefrom in the lower region of the storage container, heated to an intended temperature by an externally located heat exchanger or a heat generator operating according to the continuous flow principle and stacked in the upper container region.
  • Inlet aids ensure that the storage water is neither swirled by the cold water drain nor by the hot water inflow. In this way, hot drinking water is already available for use at the beginning of the storage load.
  • the stratified charge storage systems for domestic hot water water heaters include cold water supply line, cold water outlet, hot water entrance and hot water exit, a storage water temperature sensor for detecting a storage water temperature, a hot water inlet temperature sensor for detecting a hot water inlet temperature, and a hot water charge pump for circulation of storage water.
  • the connections for cold water inlet and outlet as well as for hot water inlet and outlet can be structurally combined.
  • a control device for the charging process is usually located in the control unit of the drinking water water heater. This implies that it must have a relatively complex control device that meets the requirements for controlling a hot water charging pump together with a suitable temperature monitoring.
  • the control of the stratified storage system can be completely self-sufficient and independent of the condition and type of water heater.
  • the stratified storage has its own control unit.
  • the instantaneous water heater then only has to have the property of starting whenever it recognizes the storage water throughput promoted by the DHW charging pump.
  • the desired domestic hot water temperature must then be set both on the instantaneous water heater and on the storage controller: the instantaneous water heater must provide water of the desired temperature, the control unit must control the charging process, i. operate the hot water charging pump depending on the degree of loading. This can be done by double manual setting of the setpoint temperature, or by a data connection, which transmits the value set on the water heater to the memory controller. Both methods are unsatisfactory because of their susceptibility to error or cabling. For stratified charge systems with self-contained stratified charge storage it would be desirable to dispense with a double adjustment or a data connection between the instantaneous water heater and the storage control unit. This would mean that the control unit had no information about which hot water temperature was set on the water heater.
  • the invention is based on the object to develop a method for operating a self-sufficient stratified storage, which allows this to automatically determine the selected on a drinking water heater temperature specifications and to control a loading process, as well as in case of failure of the power supply from the public network emergency operation sure.
  • the method is characterized by a memory control unit, which automatically uses the measuring signals detected by the measuring probes for a drinking water instantaneous water heater set storage water temperature setpoint and stored in a controller-internal RAM data memory. On the basis of this determined storage water temperature setpoint, it derives specifications for the switching on and off of the DHW charging pump, checks the measurement signal inputs for the presence of the conditions thus specified and switches the pump on and off accordingly.
  • the control unit derives the default for switching on the DHW charging pump from a predetermined storage water temperature setpoint and a predetermined allowable first temperature difference value by the on threshold is set to the predetermined setpoint, reduced by the predetermined allowable temperature difference value. If the RAM data memory is not empty, the control unit derives the specification for switching on the DHW charging pump accordingly from the determined storage water temperature setpoint stored in the RAM module and the predefinable admissible first temperature difference value.
  • the default for switching off the hot water charging pump derives the control unit from the determined and stored in the RAM module storage water temperature setpoint, the default condition for switching off the DHW pump is present when the currently measured storage water temperature measurement signal is greater than or equal to the storage water temperature setpoint is. Taking into account in this comparison may be a predetermined second temperature difference value, which may be greater than, less than or equal to zero.
  • the RAM data memory of the control unit is a read-write memory, the deleted due to implemented in the control unit specifications, for example temporal nature, or via an interface, for example in the form of a manual input by the system owner or installer, and / or can be overwritten. This ensures that the control unit automatically or on the current request determines a new storage water temperature setpoint.
  • the determination of the storage water temperature setpoint in the control unit is based on an (arithmetic) averaging of temperature individual values, which are formed from the measurement signals of the hot water inlet temperature sensor.
  • the signals on this sensor show an increasing profile, which is related to the length of the line between the water heater and the sensor and their thermal inertia.
  • the Averaging can be based on a predeterminable number of individual temperature readings, which are initially formed with the starting of the hot water charging pump.
  • the formation of the predeterminable number of individual temperature measured values can also begin only after a predefinable time period beginning with the starting of the hot water charging pump has expired and thus take into account the dead time between pump start and effective temperature increase caused by the line length and thermal inertia.
  • the mean value may also be a moving average, which is based on the continuous formation of a predefinable number of respectively recently generated temperature individual values, starting with the starting of the hot water charging pump.
  • the equation of the mean value and the storage water temperature setpoint occurs in this method at the moment when this moving average differs at most by a predefinable amount from a minimum value and a maximum value of the last individual temperature measured values.
  • the formation of the predeterminable number of each last formed individual temperature measurements only after a predeterminable, starting with the start of the hot water charging pump period begin and thus take into account the line length and thermal inertia caused dead time between pump start and effective temperature increase. This ensures that the averaging is carried out on the basis of suitable, namely stable, individual temperature measurement values and the setpoint thus determined is very close to the hot water temperature actually supplied by the instantaneous water heater.
  • the generation of the individual temperature measured values in the control unit from the continuously applied measuring signals of the hot water inlet temperature sensor can expediently take place in a predefinable frequency.
  • the sensors used are, for example, NTC resistors.
  • a DHW heater suitable for mains-independent operation in combination with a self-sufficient stratified charge storage.
  • the domestic hot water system is characterized by a switchable valve arranged in the cold water connection line which, when the power supply is functioning, is in a first valve position and directs the incoming cold water inlet into the cold water inlet of the stratified storage tank during hot water tapping.
  • a second valve position which is responsible for the failure of the power supply is provided, the cold water inlet is directed directly into a cold water inlet of the drinking water heater.
  • This second valve position adjusts itself either automatically in the absence of power supply or can also be started manually.
  • the domestic hot water supply is then based on the flow principle without recharging the stratified storage tank, since the hot water charging pump can no longer be operated.
  • valve automatically shifts automatically to the second position in the event of a power failure, the domestic hot water supply is maintained purely in accordance with the flow principle. If a manual valve actuation is provided, it is possible first to use the hot water in the stratified storage tank, to switch the valve only when the warm water has dried up, and then to prepare hot water purely in accordance with the continuous flow principle.
  • the method according to the invention offers the advantage of optimized operation of a self-sufficient stratified charge accumulator, wherein the accumulator control unit automatically determines the temperature specifications selected on a drinking water instantaneous heater and controls the loading process. In case of failure of the power supply from the public network emergency operation is ensured.
  • the drawing shows in two figures embodiments of the invention and shows a domestic hot water system with drinking water heater 1 and stratified storage 2.
  • FIG. 1 shows a stratified storage 2, comprising a cold water supply line 3, a storage tank 4 with cold water inlet 5 and cold water outlet 6 - here constructively summarized, hot water inlet 7 and hot water outlet 8, a storage water temperature sensor 9 for detecting a storage water temperature, a hot water inlet temperature sensor 10 for detecting a hot water inlet temperature, a hot water charging pump 11 for circulating storage water, as well as a control unit 12 for evaluating the measurement signals of the sensors 9, 10 and for switching on and off the hot water charging pump 11.
  • the cold water inlet into the cold water inlet 5 of the stratified storage tank 2 and in a cold water inlet 14 of the drinking water heater 1 directs.
  • the cold water inflow flows past the hot water charging pump 11 via a bypass line 15.
  • One of the hot water pump 11 upstream check valve 16 blocks a cold water return flow through the hot water charging pump eleventh
  • FIG. 2 differs from FIG. 1 in that here valve 13 is formed as arranged in the cold water inlet 5 shut-off valve 13. This shut-off valve 13 closes in the de-energized state and directs the cold water inflow into the cold water inlet 14 of the drinking water heater 1.

Landscapes

  • 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)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Cookers (AREA)
EP08012357.3A 2007-07-19 2008-07-09 Procédé de fonctionnement d'un réservoir de stockage par couches et système d'eau potable Withdrawn EP2017537A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007033564A DE102007033564B3 (de) 2007-07-19 2007-07-19 Verfahren zum Betreiben eines Schichtladespeichers und Trinkwarmwassersystem

Publications (2)

Publication Number Publication Date
EP2017537A2 true EP2017537A2 (fr) 2009-01-21
EP2017537A3 EP2017537A3 (fr) 2015-06-17

Family

ID=39745283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08012357.3A Withdrawn EP2017537A3 (fr) 2007-07-19 2008-07-09 Procédé de fonctionnement d'un réservoir de stockage par couches et système d'eau potable

Country Status (2)

Country Link
EP (1) EP2017537A3 (fr)
DE (1) DE102007033564B3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3062027B1 (fr) * 2015-02-25 2018-06-06 Vaillant GmbH Systeme d'accumulation de chaleur et procédé pour son opération
CN110285591A (zh) * 2019-07-19 2019-09-27 淮安市鼎盛太阳能有限公司 一种基于承压式储水箱的应急用水自动控制装置
CN111536687A (zh) * 2020-06-01 2020-08-14 珠海格力电器股份有限公司 热水器及其控制方法
CN114251826A (zh) * 2021-08-24 2022-03-29 佛山市顺德区美的饮水机制造有限公司 即热装置及其控制方法和控制装置、水处理装置和介质

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016639A1 (de) * 1980-04-30 1981-11-05 Forbach Gmbh & Co Kg, 8740 Bad Neustadt Wasserspeichererhitzer
DE3312479A1 (de) * 1983-04-07 1984-10-11 Nova-Apparatebau GmbH + Co, 7710 Donaueschingen Warmwasser-schichtenspeicher
DE58903512D1 (de) * 1988-08-31 1993-03-25 Landis & Gyr Betriebs Ag Sollwertgeber fuer einen brauchwasserspeicher-regler.
AT405454B (de) * 1994-08-03 1999-08-25 Vaillant Gmbh Warmwasserheizung
EP1158251B1 (fr) * 2000-05-22 2008-07-30 Vaillant GmbH Méthode pour régler une installation de chauffage d'eau
DE10118343B4 (de) * 2001-04-12 2006-09-07 Robert Bosch Gmbh Heizungsanlage
DE102005058570B3 (de) * 2005-12-08 2007-05-24 Robert Bosch Gmbh Verfahren zur Warmwasserbereitung mit einem Wärmeerzeuger und einem Schichtladespeicher

Also Published As

Publication number Publication date
DE102007033564B3 (de) 2009-01-02
EP2017537A3 (fr) 2015-06-17

Similar Documents

Publication Publication Date Title
EP3593055B1 (fr) Procédé pour faire fonctionner une installation de chauffage
EP4050269B1 (fr) Dispositif de chauffage, système de chauffage et procédé
EP4141334B1 (fr) Procédé permettant de faire fonctionner un appareil chauffant, programme informatique, support de stockage et appareil chauffant
DE19511369A1 (de) Wasserheizanlage zur Bereitung von Brauch- und Heizwasser
DE3714261C1 (de) Brennwert-Heizkessel und Verfahren zu seinem Betreiben
DE19859364C2 (de) Wärmeversorgungsanlage mit Spitzenlastbegrenzung
DE102007033564B3 (de) Verfahren zum Betreiben eines Schichtladespeichers und Trinkwarmwassersystem
EP2659199B1 (fr) Chauffe-eau instantané
EP0807790B1 (fr) Méthode et système pour préparer de l'eau chaude sanitaire
EP3924670B1 (fr) Procédé pour réguler une pompe de circulation et pompe de circulation
EP4071414B1 (fr) Procédé, système et programme informatique de commande d'un générateur de chaleur
EP2090836A2 (fr) Système de stockage de chargement de couche et procédé de fonctionnement d'un système de stockage de chargement de couche
DE102009017423A1 (de) Wasserhydraulik
EP3800403B1 (fr) Procédé de fonctionnement d'un dispositif de chauffage, dispositif de chauffage
EP2413047B1 (fr) Unité de chauffage d'eau potable
DE3538934C2 (fr)
DE69105742T2 (de) Zentralheizungsanlage.
DE2301832C3 (de) Warmwasser-Zentralheizungssystem mit Vorlauf- und Brauchwasserthermostaten
DE202012007877U1 (de) Vorrichtung zur Erwärmung von Heizwasser für eine Warmwasserbereitung
AT414272B (de) Schichtenspeicher
EP0074360B1 (fr) Procede de reglage d'une pompe a chaleur a sorption
EP3874207A1 (fr) Dispositif de réglage par régulation automatique pour une soupape de régulation de débit, et procédé de réglage par régulation automatique
CH691824A5 (de) Wasserheizungsanlage.
DE102024105517A1 (de) Verfahren zum Detektieren einer Wasserentnahme aus einem Warmwasserbehälter und Verfahren zum Regeln einer Temperatur von in einem Warmwasserbehälter bereitgestelltem Wasser
EP0073796A1 (fr) Procede de reglage d'une pompe a chaleur a sorption.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

RIC1 Information provided on ipc code assigned before grant

Ipc: F24D 19/10 20060101ALI20150512BHEP

Ipc: F24D 17/00 20060101AFI20150512BHEP

AKY No designation fees paid
AXX Extension fees paid

Extension state: AL

Extension state: MK

Extension state: RS

Extension state: BA

REG Reference to a national code

Ref country code: DE

Ref legal event code: R108

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20151218