EP0001826A1 - Installation de chauffage à eau chaude - Google Patents

Installation de chauffage à eau chaude Download PDF

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Publication number
EP0001826A1
EP0001826A1 EP78101267A EP78101267A EP0001826A1 EP 0001826 A1 EP0001826 A1 EP 0001826A1 EP 78101267 A EP78101267 A EP 78101267A EP 78101267 A EP78101267 A EP 78101267A EP 0001826 A1 EP0001826 A1 EP 0001826A1
Authority
EP
European Patent Office
Prior art keywords
differential pressure
hot water
flow
temperature
switch
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
EP78101267A
Other languages
German (de)
English (en)
Other versions
EP0001826B1 (fr
Inventor
Willi Hecking
Arend Sasserath
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.)
Hans Sasserath GmbH and Co KG
Original Assignee
Hans Sasserath GmbH and Co KG
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 Hans Sasserath GmbH and Co KG filed Critical Hans Sasserath GmbH and Co KG
Publication of EP0001826A1 publication Critical patent/EP0001826A1/fr
Application granted granted Critical
Publication of EP0001826B1 publication Critical patent/EP0001826B1/fr
Expired legal-status Critical Current

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    • 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
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • 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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners

Definitions

  • the invention relates to a hot water heating system comprising: a water heater, the one Has a heat source that can be switched on via a control circuit, a heating circuit with flow, radiator and ktr run, whereby temperature-controlled radiator valves are provided on the radiators, by means of which the water flow through the individual radiators is regulated in dependence on the room temperatures and the setpoints set on the helical valves , a circulation pump between the hot water generator and the flow and a device responsive to the differential pressure between the flow and return.
  • the hot water generator is usually a boiler.
  • the heat source E is an oil burner with a burner motor, whereby the oil burner and the burner motor can be switched on and off via the stea circuit.
  • a temperature sensor usually speaks to the temperature of the water supplied to the heating circuit, the "flow temperature" in the case of a boiler to the temperature of the boiler water. This temperature is regulated to a constant value in that the control contact of the temperature sensor is in the control circuit of the oil burner and thus switches the oil burner on when the boiler water temperature falls below a lower limit and switches it off when an upper limit is exceeded.
  • thermostatic valves In order to take into account the different heat requirements in the different rooms of a building or apartment, temperature-controlled radiator valves (“thermostatic valves”) are known on the individual radiators, which more or more regulate the flow of hot heating water through each individual radiator according to a temperature setpoint set on the radiator valve throttle less.
  • the resulting flow resistance of the heating system changes depending on the setting of the radiator valves and e.g. heat demand given by the outside temperature or solar radiation.
  • the circulation pump would try to push the same amount of water through the throttled heating system essentially unchanged, the pressure between the flow and the return increasing accordingly. But that would not be the effect aimed at by the temperature-controlled radiator valves, since the throttling means that less water should flow through the heating system at the regulated flow temperature. Undesirable flow noises would also result with low heat requirements and strongly throttled radiator valves. For this reason, a differential pressure regulator is provided between the flow and the return. This contains an overflow valve that opens when a predetermined response point of the differential pressure is exceeded and a short-circuit connection between the flow and return on the heater
  • Ls is insisted on dividing the heating system into two individually controlled circuits.
  • a boiler circuit the temperature of the heating water is kept at a constant value in the manner described.
  • the temperature of the heating water is adapted to the respective weather conditions by a control device which responds to the outside temperature.
  • the temperature of the heating water in the heating circuit is therefore lower at high outside temperatures and low heat requirements and higher at low outside temperatures. So the temperature of the heating water flowing in the radiators is already roughly adapted to the heat requirement.
  • the room temperature in the individual rooms is also controlled via temperature-controlled radiator valves. Because of the adaptation of the temperature of the heating water to the heat requirement, these radiator valves no longer work in the vicinity of their closed position and ensure a sufficient flow of heating water through the radiators, so that the radiators are evenly flowed through and evenly heated.
  • the invention has for its object to provide a hot water heating system of the type defined in such a way that the temperature of the heating water is adapted to the heat requirement with as little effort as possible.
  • this object is achieved in that a switch contact is provided on the device responsive to the differential pressure, which opens when the differential pressure exceeds a given response point, and in that this switch contact is in the control circuit of the heat source.
  • the invention takes advantage of the fact that the differential pressure below: the response point drops when the radiator valves are opened sufficiently to allow a constant flow of heating water through to ensure the radiators. If the heating water temperature is too high for the heat demand, the radiator valves move to a more restricted position due to the increase in the room temperature. This in turn causes an increase in the differential pressure between flow and return and thus an exceeding of the response point of the device responsive to the differential pressure. This opens the switch contact provided on the device. This opens the control circuit and switches off the heat source, such as an oil burner. The temperature of the heating water now drops. In order to cover the heat requirement and to maintain the selected room temperature, the temperature-controlled radiator valves must therefore open further so that a stronger current of the now cooler heating water flows through the radiators.
  • the temperature of the heating water will have dropped so far that the temperature-controlled radiator valves work again in their optimal working range to cover the specified heat requirement.
  • the resulting flow resistance of the heating circuit and thus also the differential pressure between the flow and return have dropped so far that the response point of the device is again below. This again requires the switching contact provided on the differential pressure regulator to be closed and, since the control contact is closed anyway when the temperature of the heating water is reduced, the heat source is switched on again.
  • the temperature of the heating water is thus kept at a value such that the temperature-controlled radiator valves operate in a favorable working range by opening and closing the switching contact provided on said device. If the radiator valves work in this area, the differential pressure is below the response point. Turning on the Heat source causes an increase in the temperature of the heating water and thus the room temperature, which in turn initiates a closing movement of the radiator valves and thus an exceeding of the response point and opening of the switch contact. It is achieved by a simple additional switch contact an adaptation of the temperature of the heating water to the heat requirement and thus a perfect temperature control without the disadvantages described above.
  • 10 denotes a boiler which represents a hot water generator and has an oil burner 12 as a heat source.
  • a first temperature sensor 14 is provided on the boiler 10, which responds to the temperature of the heating water and through which a control contact 16 (FIG. 1) can be actuated.
  • the temperature sensor 14 can be set so that it opens the control contact 16 at a temperature of 80 ° C, while the control contact 16 remains closed below this temperature.
  • a second temperature sensor 18 is also provided on the boiler 10, by means of which a switch contact 20 can be actuated.
  • the second temperature sensor 18 opens the switch contact 2G at a temperature of 105 ° C and acts as a temperature limiter.
  • a safety valve provided on the boiler 10 is designated.
  • the boiler 10 is connected to a flow 26 via a circulation pump 24.
  • a conventional pressure compensation vessel 28 is connected between the boiler 10 and the circulation pump 24.
  • a return is designated by 30, while the radiators or radiators, which lie between the flow 26 and the return 30, are symbolized by a heat consumer 32.
  • Flow 26, heating element 32 and return 30 form a heating circuit 34.
  • Each heating element 32 is preceded by a temperature-controlled heating element valve 36, which is more or less opened by a temperature sensor 38 which responds to the room temperature. When the room temperature drops, the radiator valve 36 is opened further to pass more heating water through the radiator in question, when the room temperature rises, the radiator valve 36 is throttled more.
  • a differential pressure regulator 40 is located between the flow 26 and the return 30.
  • the differential pressure regulator 40 contains an overflow valve 42 controlled by the differential pressure, which is arranged in a short-circuit line 44 that runs around the heater 32 and runs between the flow 26 and the return 30.
  • the overflow valve 42 is closed at low differential pressures between flow 26 and return 30 and begins to open at a predetermined response point of the differential pressure.
  • the overflow valve 42 then opens further the higher the differential pressure becomes.
  • the differential pressure is thus kept essentially constant, regardless of how far the temperature-controlled radiator valves 36 are opened. If the temperature-controlled radiator valves 36 throttle the heating water circulation through the radiators or part of the radiators 32 with a lower heat requirement, part of the delivery volume of the circulation pump 24 flows via the short-circuit line 44 directly to the return.
  • a switching contact 46 is now provided on the differential pressure regulator 40, which is closed when the overflow valve 42 is in its closed position (that of a suitable predetermined position) and opens when the overflow valve 42 moves from this position into an open position emotional.
  • the switch contact 46 in the row with the switch contact 20 of the temperature control ars and the control contact 16 is in the control circuit 50 of the oil branch 12.
  • Fig. 3 also shows in connection with Fig. 2 a variant of the arrangement described, which allows a lowering of the temperature of the heating water during the night time.
  • a differential pressure switch 52 is arranged in parallel with the differential pressure regulator 40 between the flow 26 and the return 30.
  • the differential pressure switch 52 opens a further switching contact 54 when a predetermined response point of the differential pressure is exceeded, the response point of the differential pressure switch 52 being below the aforementioned response point of the differential pressure regulator 40.
  • the switch contact 54 of the differential pressure switch 52 is in series with the switch contact 46 of the differential pressure regulator 40 in the control circuit 50 of the oil burner 12.
  • the switch contact 56 of the differential pressure switch 52 is connected in parallel with the switch contact 56 of a timer 58. In Fig. 3 this is indicated by the dashed line 60 and 52, respectively.
  • the switch contact 54 of the differential pressure switch 52 is bridged by the closed switch contact 56 of the time switch 58.
  • the switching state of the switching contact 54 then has no influence on the temperature control and the temperature of the heating water is determined in the manner described by the differential pressure controller 40 and the switching contact 46.
  • the burner is already switched off when the differential pressure exceeds the lower response point of the differential pressure switch, i.e. temperature-controlled radiator valves are closed less than is necessary to respond to the differential pressure regulator 40 and open the overflow valve 42 .
  • This lowers the temperature of the circulating heating water during the night, resulting in an average room temperature at which the radiator valves are opened further, which is lower than the room temperature regulated during daytime operation.
  • Fig. 6 shows a hot water heating system, which is also set up for the preparation of hot domestic water. Corresponding parts are given the same reference numerals in FIG. 6 as in FIG. 3 and are not described again below.
  • a heat exchanger 64 through which the heating water flows and which is arranged in series with a thermostatically controlled valve 66 between the feed 26 and the return 30 is provided as the water heater for preparing hot domestic water.
  • the valve 66 is controlled by a heat sensor 68 as a function of the hot water temperature in the heat exchanger 64.
  • a second switching contact 70 can be controlled, which is parallel to the switching contact 46 of the device which responds to the differential pressure, namely the differential pressure regulator 40, in the control circuit 50 and when the valve is fully opened 66 closes.
  • the heat requirement of the heating circuit 34 is low and the overflow valve 42 of the differential pressure regulator 40 opens, so that the oil burner 12 is switched off via the contact 46, then the oil burner 12 is switched on and off in accordance with the heat requirement in the Heat exchanger 64.
  • the heat sensor 68 opens the valve 66 in order to conduct heating water through the heat exchanger 64 to a greater extent and the hot water temperature to the desired level Hold value.
  • the switch contact 70 closes, whereby the oil burner 12 is switched on even when the switch contact 46 is open.
  • the switching contact 70 advantageously opens before the valve 66 is completely closed and thus switches off the oil burner 12. Then the residual heat stored in the circulating heating water is still transferred to the process water in the heat exchanger 64.
  • the heat exchanger 64 with the switch contact 70 is used at the same time in order to reduce the temperature of the heating water during the night.
  • the switch contact 56 of a timer 58 connected in series.
  • the second switch contact 70 which is controlled together with the thermostatically controlled valve 66, is connected in parallel with this series connection.

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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)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP78101267A 1977-11-09 1978-10-31 Installation de chauffage à eau chaude Expired EP0001826B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2750098 1977-11-09
DE2750098A DE2750098C2 (de) 1977-11-09 1977-11-09 Warmwasser-Heizungsanlage

Publications (2)

Publication Number Publication Date
EP0001826A1 true EP0001826A1 (fr) 1979-05-16
EP0001826B1 EP0001826B1 (fr) 1980-09-17

Family

ID=6023347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101267A Expired EP0001826B1 (fr) 1977-11-09 1978-10-31 Installation de chauffage à eau chaude

Country Status (3)

Country Link
EP (1) EP0001826B1 (fr)
AT (1) AT374907B (fr)
DE (1) DE2750098C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006554A1 (fr) * 1978-07-05 1980-01-09 Hans Sasserath & Co Kg Installation de chauffage à eau chaude
EP0027827A1 (fr) * 1979-10-06 1981-05-06 Hans Sasserath & Co Kg Système de chauffage à eau chaude
EP0036068A2 (fr) * 1980-03-14 1981-09-23 Hans Sasserath & Co Kg Installation de chauffage à eau chaude
EP0082669A2 (fr) * 1981-12-17 1983-06-29 Thermonic Corp. Commande d'une installation de chauffage de bâtiment

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931739C2 (de) * 1979-08-04 1984-07-19 F.W. Oventrop Arn. Sohn Kg, 5787 Olsberg Überströmventil zum Einbau in Warmwasserheizungsanlagen
DE3202168A1 (de) * 1982-01-25 1983-08-04 Siemens AG, 1000 Berlin und 8000 München Regeleinrichtung fuer eine warmwasser-zentralheizung
AT394426B (de) * 1989-12-15 1992-03-25 Vaillant Gmbh Ueberstroemventil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216464A1 (de) * 1972-04-06 1973-10-11 Gerhard Dipl Ing Eckerle Steuer- und regeleinrichtung zur optimalen erfassung der waermemenge bei der messung mit waermezaehlern und waermemengenmessern
DE2348755A1 (de) * 1973-09-28 1975-04-10 Stiebel Eltron Gmbh & Co Kg Steuereinrichtung fuer heizungsanlagen
DE2226865B2 (de) * 1972-06-02 1975-10-02 Joh. Vaillant Kg, 5630 Remscheid Regeleinrichtung für eine Warmwasserheizungsanlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH501192A (de) * 1968-06-15 1970-12-31 Troesch Hans A Dr Ing Verfahren zum Regeln von Heizungsanlagen und Heizungsanlage zur Ausführung des Verfahrens
DE2311691A1 (de) * 1973-03-09 1974-09-19 Vaillant Joh Kg Regeleinrichtung fuer eine heizungsanlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2216464A1 (de) * 1972-04-06 1973-10-11 Gerhard Dipl Ing Eckerle Steuer- und regeleinrichtung zur optimalen erfassung der waermemenge bei der messung mit waermezaehlern und waermemengenmessern
DE2226865B2 (de) * 1972-06-02 1975-10-02 Joh. Vaillant Kg, 5630 Remscheid Regeleinrichtung für eine Warmwasserheizungsanlage
DE2348755A1 (de) * 1973-09-28 1975-04-10 Stiebel Eltron Gmbh & Co Kg Steuereinrichtung fuer heizungsanlagen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006554A1 (fr) * 1978-07-05 1980-01-09 Hans Sasserath & Co Kg Installation de chauffage à eau chaude
EP0027827A1 (fr) * 1979-10-06 1981-05-06 Hans Sasserath & Co Kg Système de chauffage à eau chaude
EP0036068A2 (fr) * 1980-03-14 1981-09-23 Hans Sasserath & Co Kg Installation de chauffage à eau chaude
EP0036068A3 (fr) * 1980-03-14 1981-11-04 Hans Sasserath & Co Kg Installation de chauffage à eau chaude
EP0082669A2 (fr) * 1981-12-17 1983-06-29 Thermonic Corp. Commande d'une installation de chauffage de bâtiment
EP0082669A3 (fr) * 1981-12-17 1984-10-10 Thermonic Corp. Commande d'une installation de chauffage de bâtiment

Also Published As

Publication number Publication date
DE2750098A1 (de) 1979-05-10
ATA767878A (de) 1983-10-15
EP0001826B1 (fr) 1980-09-17
AT374907B (de) 1984-06-12
DE2750098C2 (de) 1986-09-04

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