EP0027827B1 - Hot-water heating system - Google Patents

Hot-water heating system Download PDF

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Publication number
EP0027827B1
EP0027827B1 EP79103827A EP79103827A EP0027827B1 EP 0027827 B1 EP0027827 B1 EP 0027827B1 EP 79103827 A EP79103827 A EP 79103827A EP 79103827 A EP79103827 A EP 79103827A EP 0027827 B1 EP0027827 B1 EP 0027827B1
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EP
European Patent Office
Prior art keywords
valve
pressure differential
duct
hot water
radiators
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
Application number
EP79103827A
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German (de)
French (fr)
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EP0027827A1 (en
Inventor
Arend Sasserath
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Hans Sasserath GmbH and Co KG
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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
Priority to DE7979103827T priority Critical patent/DE2965517D1/en
Priority to EP79103827A priority patent/EP0027827B1/en
Priority to AT79103827T priority patent/ATE3584T1/en
Publication of EP0027827A1 publication Critical patent/EP0027827A1/en
Application granted granted Critical
Publication of EP0027827B1 publication Critical patent/EP0027827B1/en
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
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1021—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a by pass valve

Definitions

  • the invention relates to a hot water heating system, comprising: a hot water generator which has a heat source which can be switched on electrically via a control circuit, a heating circuit with flow, radiators and return, temperature-controlled radiator valves being provided on the radiators, through which the water flow through the individual radiators in Depending on the room temperatures and the setpoints set on the radiator valves, a circulating pump between the hot water generator and the flow and a differential pressure controller that is connected between the flow and return and has an overflow valve and through which, depending on the differential pressure between the flow and return, when a predetermined differential pressure, a short-circuit connection lying parallel to the radiators can be released more or less, in which a switching contact is provided on the differential pressure controller, which opens when the differential pressure uck exceeds a predetermined response point and at which this switching contact is in the control circuit of the heat source.
  • Such a hot water heating system is the subject of European patent application 0 001 826. If there is a low heat requirement in the heating circuit so that the temperature-controlled radiator valves throttle the water flow through the radiators, then the differential pressure between the flow and the return increases.
  • the differential pressure regulator opens the overflow valve so that the water pumped by the circulation pump can flow past the heating circuit into the return.
  • the heat source z. B. an oil burner, switched off. This lowers the flow temperature and regulates it to such a value that the temperature-controlled radiator valves operate in a central area of their opening characteristics. If the heat requirement is low, this can lead to the flow temperature being reduced to a very low value, which is in the dew point range of the flue gases. Condensation of flue gases can then take place, which can lead to corrosion damage, for example, in oil-fired steel boilers.
  • the invention has for its object to provide a hot water heating system of the type defined in such a way that a minimum temperature of the boiler water is always maintained, which prevents condensation of the flue gases.
  • the differential pressure controller contains an admixing valve which is arranged in parallel with the overflow valve between the flow and return and is controlled by the temperature of the flow water and which opens when the temperature of the flow water falls below a predetermined value.
  • the admixing valve opens, whereby the pressure difference at the differential pressure regulator breaks down and the overflow valve closes, so that the heat source is switched on again.
  • the differential pressure regulator contains a housing 10 which is divided by a regulator membrane 12 into a flow-side membrane chamber 14 and a return-side membrane chamber 16.
  • a flow-side connecting piece 18 opens into the flow-side membrane chamber 14.
  • the housing 10 has a central, cylindrical valve seat body 20 which projects from the bottom of the housing in the interior of the same axis to the membrane 12 and forms a valve seat 22.
  • the inside of the valve body 20 is connected to a return-side connecting piece 24.
  • a valve disk 26 is connected to the regulator membrane 12 via a valve tappet 28. The valve plate 26 cooperates with the valve seat 22 to form the overflow valve.
  • the diaphragm chamber 16 on the side of the diaphragm 12 facing away from the valve is connected to the interior of the cylindrical valve seat body 20 via a T-bore 30 running in the valve tappet 28, that is to say to the return-side connecting piece 24.
  • the valve tappet 28 lies in the diaphragm chamber 16 on one Pressure piece 32, on which in turn a plunger 34 bears under the influence of a loading spring 36.
  • the plunger 36 forms a flange 38 on which the switching arm 40 of a microswitch 42 bears.
  • the differential pressure regulator contains a mixing valve 50, which is arranged parallel to the overflow valve 22, 26 between the flow and return and is controlled by the temperature of the flow water and which opens when the temperature of the flow water exceeds a predetermined value.
  • the admixing valve 50 is arranged in the housing 10 of the differential pressure regulator in a bypass channel 52 which bypasses the control valve 22, 26 of the differential pressure regulator.
  • the admixing valve 50 is controlled by a thermostat 53 arranged in this bypass channel 52. It is ensured that at least a minimum flow through the bypass channel 52 is always maintained. This ensures that the thermostat is always acted upon by the true flow temperature and not by a temperature that deviates from the flow temperature and has remained in a side branch that is separate from the flow of the flow water.
  • the expansion working element forming the thermostat 53 is supported on an adjusting screw 68 guided in the housing wall.
  • the opening point of the admixing valve 50 can be adjusted by adjusting the adjusting screw 68.
  • the opening characteristic of the admixing valve 50 after the opening point has been exceeded, quickly releases a passage cross section which forces the differential pressure to drop below said response point.

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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)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

1. Hot water heating installation comprising : a hot water generator, which has a heat source arranged to be started electrically through a control circuit, a heating loop including a forward duct, radiators and a return duct, temperature controlled radiator valves being provided at the radiators, and being arranged to control the flow rate of water through the individual radiators as a function of the room temperatures and of the setpoints set at the respective radiator valves, a circulation pump between hot water generator and forward duct and a pressure differential controller, which is connected between forward duct and return duct and has an overflow valve (22, 26), and which is adapted to open a short-circuiting conduit connected in parallel to the radiators more or less depending on the pressure differential between forward duct and return duct, when a predetermined pressure differential has been exceeded, wherein a switch contact (42) is provided at the pressure differential controller and opens, when the pressure differential exceeds a predetermined response level, and wherein this switch contact (42) is connected into the control circuit of the heat source, characterized in that the pressure differential controller comprises an adding valve (50) arranged in parallel to the overflow valve between forward duct and return duct and controlled by the temperature of the forward duct water, said valve being opened, when the temperature of the forward duct water falls below a predetermined value.

Description

Die Erfindung betrifft eine Warmwasser-Heizungsanlage, enthaltend: einen Warmwassererzeuger, der eine elektrisch über einen Steuerkreis einschaltbare Wärmequelle aufweist, einen Heizkreis mit Vorlauf, Heizkörpern und Rücklauf, wobei an den Heizkörpern temperaturgesteuerte Heizkörperventile vorgesehen sind, durch welche der Wasserdurchfluß durch die einzelnen Heizkörper in Abhängigkeit von den Raumtemperaturen und den an den Heizkörperventilen jeweils eingestellten Sollwerten regelbar ist, eine Umlaufpumpe zwischen Warmwassererzeuger und Vorlauf und einen Differenzdruckregler, der zwischen Vorlauf und Rücklauf geschaltet ist und ein Überströmventil aufweist und durch den in Abhängigkeit vom Differenzdruck zwischen Vorlauf und Rücklauf bei Überschreiten eines vorgegebenen Differenzdrucks eine parallel zu den Heizkörpern liegende Kurzschlußverbindung mehr oder weniger freigebbar ist, bei welcher an dem Differenzdruckregler ein Schaltkontakt vorgesehen ist, der öffnet, wenn der Differenzdruck einen vorgegebenen Ansprechpunkt überschreitet und bei welcher dieser Schaltkontakt im Steuerkreis der Wärmequelle liegt.The invention relates to a hot water heating system, comprising: a hot water generator which has a heat source which can be switched on electrically via a control circuit, a heating circuit with flow, radiators and return, temperature-controlled radiator valves being provided on the radiators, through which the water flow through the individual radiators in Depending on the room temperatures and the setpoints set on the radiator valves, a circulating pump between the hot water generator and the flow and a differential pressure controller that is connected between the flow and return and has an overflow valve and through which, depending on the differential pressure between the flow and return, when a predetermined differential pressure, a short-circuit connection lying parallel to the radiators can be released more or less, in which a switching contact is provided on the differential pressure controller, which opens when the differential pressure uck exceeds a predetermined response point and at which this switching contact is in the control circuit of the heat source.

Eine solche Warmwasser-Heizungsanlage ist Gegenstand der europäischen Offenlegungsschrift 0 001 826. Wenn im Heizkreis ein geringer Wärmebedarf besteht, so daß die temperaturgesteuerten Heizkörperventile den Wasserdurchfluß durch die Heizkörper drosseln, dann erhöht sich der Differenzdruck zwischen Vorlauf und Rücklauf. Der Differenzdruckregler öffnet das Überströmventil, so daß das von der Umlaufpumpe geförderte Wasser an dem Heizkreis vorbei in den Rücklauf fließen kann. Beim Öffnen des Überströmventils wird gleichzeitig die Wärmequelle, z. B. ein Ölbrenner, abgeschaltet. Dadurch wird die Vorlauftemperatur abgesenkt und auf einen solchen Wert geregelt, daß die temperaturgesteuerten Heizkörperventile in einem mittleren Bereich ihrer Öffnungscharakteristik arbeiten. Bei geringem Wärmebedarf kann dies aber dazu führen, daß die Vorlauftemperatur auf einen sehr niedrigen Wert abgesenkt wird, der im Taupunktbereich der Rauchgase liegt. Es kann dann eine Kondensation von Rauchgasen stattfinden, die beispielsweise bei ölbefeuerten Stahlheizkesseln zu Korrosionsschäden führen kann.Such a hot water heating system is the subject of European patent application 0 001 826. If there is a low heat requirement in the heating circuit so that the temperature-controlled radiator valves throttle the water flow through the radiators, then the differential pressure between the flow and the return increases. The differential pressure regulator opens the overflow valve so that the water pumped by the circulation pump can flow past the heating circuit into the return. When opening the overflow valve, the heat source, z. B. an oil burner, switched off. This lowers the flow temperature and regulates it to such a value that the temperature-controlled radiator valves operate in a central area of their opening characteristics. If the heat requirement is low, this can lead to the flow temperature being reduced to a very low value, which is in the dew point range of the flue gases. Condensation of flue gases can then take place, which can lead to corrosion damage, for example, in oil-fired steel boilers.

Der Erfindung liegt die Aufgabe zugrunde, eine Warmwasser-Heizungsanlage der eingangs definierten Art so auszubilden, daß stets eine , ,1indesttemperatur des Kesselwassers aufrechterhalten wird, welche eine Kondensation der Rauchgase verhindert.The invention has for its object to provide a hot water heating system of the type defined in such a way that a minimum temperature of the boiler water is always maintained, which prevents condensation of the flue gases.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Differenzdruckregler ein parallel zu dem Überströmventil zwischen Vorlauf und Rücklauf angeordnetes, von der Temperatur des Vorlaufwassers gesteuertes Beimischventil enthält, welches öffnet, wenn die Temperatur des Vorlaufwassers einen vorgegebenen Wert unterschreitet.According to the invention, this object is achieved in that the differential pressure controller contains an admixing valve which is arranged in parallel with the overflow valve between the flow and return and is controlled by the temperature of the flow water and which opens when the temperature of the flow water falls below a predetermined value.

Wenn die Temperatur des Kesselwassers, also die Vorlauftemperatur des Heizkreises durch den Regelmechanismus gemäß EP-A-0 001 826 einen zulässigen Mindestwert unterschreitet, öffnet das Beimischventil, wodurch die Druckdifferenz am Differenzdruckregler zusammenbricht und das Überströmventil schließt, so daß die Wärmequelle wieder eingeschaltet wird.If the temperature of the boiler water, i.e. the flow temperature of the heating circuit by the control mechanism according to EP-A-0 001 826, falls below an admissible minimum value, the admixing valve opens, whereby the pressure difference at the differential pressure regulator breaks down and the overflow valve closes, so that the heat source is switched on again.

Weitere Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.Further embodiments of the invention are the subject of the dependent claims.

Die Erfindung ist nachstehend an einem Ausführungsbeispiel unter Bezugnahme auf die zugehörige Zeichnung näher erläutert, die einen Vertikalschnitt durch den Differenzdruckregler bei einer erfindungsgemäßen Warmwasser-Heizungsanlage zeigt.The invention is explained below using an exemplary embodiment with reference to the accompanying drawing, which shows a vertical section through the differential pressure controller in a hot water heating system according to the invention.

Der Differenzdruckregler enthält ein Gehäuse 10, welches durch eine Reglermembran 12 in eine vorlaufseitige Membrankammer 14 und eine rücklaufseitige Membrankammer 16 unterteilt ist. In der vorlaufseitigen Membrankammer 14 mündet ein vorlaufseitiger Anschlußstutzen 18. Das Gehäuse 10 weist einen zentralen, zylindrischen Ventilsitzkörper 20 auf, der vom Boden des Gehäuses in dessen Inneres gleichachsig zu der Membran 12 hineinragt und einen Ventilsitz 22 bildet. Das Innere des Ventilkörpers 20 steht mit einem rücklaufseitigen Anschlußstutzen 24 in Verbindung. Mit der Reglermembran 12 ist ein Ventilteller 26 über einen Ventilstößel 28 verbunden. Der Ventilteller 26 wirkt mit dem Ventilsitz 22 zur Bildung des Überströmventils zusammen. Die Membrankammer 16 auf der dem Ventil abgewandten Seite der Membran 12 ist über eine in dem Ventilstößel 28 verlaufende T-Bohrung 30 mit dem Inneren des zylindrischen Ventilsitzkörpers 20 verbunden, also mit dem rücklaufseitigen Anschlußstutzen 24. Der Ventilstößel 28 liegt in der Membrankammer 16 an einem Druckstück 32 an, an welchem wiederum ein Stößel 34 unter dem Einfluß einer Belastungsfeder 36 anliegt. Der Stößel 36 bildet einen Flansch 38, an welchem der Schaltarm 40 eines Mikroschalters 42 anliegt. Wenn der Differenzdruck zwischen Vorlauf und Rücklauf einen vorgegebenen Wert überschreitet, bewegt sich die Membran 12 nach oben und schiebt auch den Stößel 34 über das Druckstück 32 nach oben, wodurch der Mikroschalter 42 über den Schaltarm 40 betätigt wird. Der Mikroschalter bewirkt die Ausschaltung der Wärmequelle, also beispielsweise des Ölbrenners. Der Ansprechpunkt, bei welchem das Ventil 26, 22 öffnet und der Mikroschalter 42 betätigt wird, kann durch die Vorspannung der Feder 36 eingestellt werden. Zu diesem Zweck stützt sich die Feder 36 an einer geradgeführten Mutter 44 ab, die auf einer mittels eines Stellknopfes 46 verdrehbaren Gewindespindel 48 geführt ist.The differential pressure regulator contains a housing 10 which is divided by a regulator membrane 12 into a flow-side membrane chamber 14 and a return-side membrane chamber 16. A flow-side connecting piece 18 opens into the flow-side membrane chamber 14. The housing 10 has a central, cylindrical valve seat body 20 which projects from the bottom of the housing in the interior of the same axis to the membrane 12 and forms a valve seat 22. The inside of the valve body 20 is connected to a return-side connecting piece 24. A valve disk 26 is connected to the regulator membrane 12 via a valve tappet 28. The valve plate 26 cooperates with the valve seat 22 to form the overflow valve. The diaphragm chamber 16 on the side of the diaphragm 12 facing away from the valve is connected to the interior of the cylindrical valve seat body 20 via a T-bore 30 running in the valve tappet 28, that is to say to the return-side connecting piece 24. The valve tappet 28 lies in the diaphragm chamber 16 on one Pressure piece 32, on which in turn a plunger 34 bears under the influence of a loading spring 36. The plunger 36 forms a flange 38 on which the switching arm 40 of a microswitch 42 bears. If the differential pressure between flow and return exceeds a predetermined value, the diaphragm 12 moves upward and also pushes the plunger 34 upwards via the pressure piece 32, whereby the microswitch 42 is actuated via the switching arm 40. The microswitch switches off the heat source, for example the oil burner. The response point at which the valve 26, 22 opens and the microswitch 42 is actuated can be set by the bias of the spring 36. For this purpose, the spring 36 is supported on a straight nut 44, which on a threaded spindle rotatable by means of an adjusting knob 46 48 is performed.

Der Differenzdruckregler enthält ein parallel zu dem Überströmventil 22, 26 zwischen Vorlauf und Rücklauf angeordnetes, von der Temperatur des Vorlaufwassers gesteuertes Beimischventil 50, welches öffnet, wenn die Temperatur des Vorlaufwassers einen vorgegebenen Wert überschreitet. Das Beimischventil 50 ist im Gehäuse 10 des Differenzdruckreglers in einem das Regelventil 22, 26 des Differenzdruckreglers umgehenden Umgehungskanal 52 angeordnet. Das Beimischventil 50 wird von einem in diesem Umgehungskanal 52 angeordneten Thermostaten 53 gesteuert. Es ist dafür gesorgt, daß stets wenigstens eine Mindestströmung durch den Umgehungskanal 52 aufrechterhalten bleibt. Dadurch wird sichergestellt, daß der Thermostat stets von der wahren Vorlauftemperatur beaufschlagt ist und nicht etwa von einer Temperatur, die von der Vorlauftemperatur abweicht und sich in einem vom Strom des Vorlaufwassers getrennten Seitenzweig gehalten hat.The differential pressure regulator contains a mixing valve 50, which is arranged parallel to the overflow valve 22, 26 between the flow and return and is controlled by the temperature of the flow water and which opens when the temperature of the flow water exceeds a predetermined value. The admixing valve 50 is arranged in the housing 10 of the differential pressure regulator in a bypass channel 52 which bypasses the control valve 22, 26 of the differential pressure regulator. The admixing valve 50 is controlled by a thermostat 53 arranged in this bypass channel 52. It is ensured that at least a minimum flow through the bypass channel 52 is always maintained. This ensures that the thermostat is always acted upon by the true flow temperature and not by a temperature that deviates from the flow temperature and has remained in a side branch that is separate from the flow of the flow water.

Im einzelnen ist an dem Ventilsitzkörper 20 ein seitlicher Stutzen 54 vorgesehen, der einen Teil des Umgehungskanals 52 bildet und in dem zur Bildung des Beimischventils 50 ein scheibenförmiger, den Querschnitt des Stutzen ausfüllender Ventilschließkörper 56 mittels radialer Rippen 58, 60 geführt ist, die vor den Stirnflächen des Ventilschließkörpers 56 an diesem angebracht sind. Der Thermostat 53 ist ein Dehnstoffarbeitselement, an welchem der Ventilschließkörper 56 unter dem Einfluß einer Druckfeder 62 anliegt. Die Druckfeder 62 stützt sich in einer ringförmigen Vertiefung 64 des Stutzens 54 ab und liegt an einem Teller 66 an der vor den Stirnflächen der thermostatseitig angeordneten Rippen 60 sitzt und mit diesen verbunden ist. Der Thermostat 53 ragt durch einen zentralen Durchbruch dieses Tellers 66 hindurch. Das den Thermostaten 53 bildende Dehnstoffarbeitselement stützt sich an einer in der Gehäusewandung geführten Stellschraube 68 ab. Auf diese Weise ist der Öffnungspunkt des Beimischventils 50 durch Verstellen der Stellschraube 68 einstellbar. Bei der beschriebenen Konstruktion des Beimischventils 50 gibt die Öffnungscharakteristik des Beimischventils 50 nach Überschreiten des Öffnungspunktes schnell einen das Absinken des Differenzdrucks unter den besagten Ansprechpunkt erzwingenden Durchlaßquerschnitt frei.Specifically, a lateral connecting piece 54 is provided on the valve seat body 20, which forms part of the bypass channel 52 and in which a disk-shaped valve closing body 56, which fills the cross section of the connecting piece, is guided by means of radial ribs 58, 60 leading to the mixing valve 50 End faces of the valve closing body 56 are attached to this. The thermostat 53 is an expansion work element on which the valve closing body 56 bears under the influence of a compression spring 62. The compression spring 62 is supported in an annular recess 64 of the connecting piece 54 and lies on a plate 66 on which the ribs 60 arranged in front of the end faces of the thermostat side are connected and connected to them. The thermostat 53 protrudes through a central opening in this plate 66. The expansion working element forming the thermostat 53 is supported on an adjusting screw 68 guided in the housing wall. In this way, the opening point of the admixing valve 50 can be adjusted by adjusting the adjusting screw 68. In the construction of the admixing valve 50 described, the opening characteristic of the admixing valve 50, after the opening point has been exceeded, quickly releases a passage cross section which forces the differential pressure to drop below said response point.

Claims (6)

1. Hot water heating installation comprising:
a hot water generator, which has a heat source arranged to be started electrically through a control circuit,
a heating loop including a forward duct, radiators and a return duct, temperature controlled radiator valves being provided at the radiators, and being arranged to control the flow rate of water through the individual radiators as a function of the room temperatures and of the setpoints set at the respective radiator valves, a circulation pump between hot water generator and forward duct and
a pressure differential controller, which is connected between forward duct and return duct and has an overflow valve (22, 26), and which is adapted to open a short-circuiting conduit connected in parallel to the radiators more or less depending on the pressure differential between forward duct and return duct, when a predetermined pressure differential has been exceeded,
wherein a switch contact (42) is provided at the pressure differential controller and opens, when the pressure differential exceeds a predetermined response level, and
wherein this switch contact (42) is connected into the control circuit of the heat source, characterized in that the pressure differential controller comprises an adding valve (50) arranged in parallel to the overflow valve between forward duct and return duct and controlled by the temperature of the forward duct water, said valve being opened, when the temperature of the forward duct water falls below a predetermined value.
2. Hot water heating installation as in Claim 1, characterized in that the opening point of the adding valve (50) is adjustable.
3. Hot water heating installation as in Claim 2, characterized in that the opening characteristic of the adding valve (50), after having exceeded the opening point, quickly opens a flow passage constraining the pressure differential to drop below said response level.
4. Hot water heating installation as in anyone of the claims 1 to 3, characterized in that
(a) the adding valve (50) is located within the housing (10) of the pressure differential controller in a by-pass (52) by-passing the overflow valve (22, 26) of the pressure differential controller,
(b) the adding valve (50) is controlled by a thermostat (53) arranged in this by-pass (52), and
(c) always at least a minimum flow rate through the by-pass is maintained.
5. Hot water heating installation as in claim 4, characterized in that
(a) the housing (10) of the pressure differential controller has a cylindrical valve seat body (20), the interior of which communicates with a connecting socket (24) on the side of the return duct, and which extends into a diaphragm chamber (14) communicating with the connecting socket (18) on the side of the forward duct and closed by a regulator diaphragm, and forms a valve seat (22), a valve plate (26) connected with the regulator diaphragm (12) through a valve stem (28) cooperating with the valve seat (22) to form the overflow valve, and a diaphragm chamber on the side of the diaphragm (12) remote from the valve (22, 26) is connected with the interior of the cylindrical valve seat body (20) through a T-bore (30) passing through the valve stem (28),
(b) a lateral socket (54) is provided on the valve seat body (20), which socked forms part of the by-pass (52) and in which a disc-shaped valve closure body (56) filling the opening of the socket is guided by means of radial ribs (58, 60) to form the adding valve (50), said ribs being attached to the valve closure body (56) in front of the end faces thereof,
(c) the thermostat (53) is a dilating substance actuator, which is engaged by the valve closure body (56) under the action of a compression spring (62).
6. Hot water heating installation as in claim 5, characterized in that the dilating substance actuator (53) is supported on an adjusting screw (68) guided in the housing wall.
EP79103827A 1979-10-06 1979-10-06 Hot-water heating system Expired EP0027827B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE7979103827T DE2965517D1 (en) 1979-10-06 1979-10-06 Hot-water heating system
EP79103827A EP0027827B1 (en) 1979-10-06 1979-10-06 Hot-water heating system
AT79103827T ATE3584T1 (en) 1979-10-06 1979-10-06 HOT WATER HEATING SYSTEM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79103827A EP0027827B1 (en) 1979-10-06 1979-10-06 Hot-water heating system

Publications (2)

Publication Number Publication Date
EP0027827A1 EP0027827A1 (en) 1981-05-06
EP0027827B1 true EP0027827B1 (en) 1983-05-25

Family

ID=8186208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103827A Expired EP0027827B1 (en) 1979-10-06 1979-10-06 Hot-water heating system

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EP (1) EP0027827B1 (en)
AT (1) ATE3584T1 (en)
DE (1) DE2965517D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009790A1 (en) * 1980-03-14 1981-09-24 Hans Sasserath & Co Kg, 4052 Korschenbroich HOT WATER HEATING SYSTEM
FR2701306B1 (en) * 1993-02-05 1995-04-21 Comap Fluid distribution network with regulation device.
CN111396960A (en) * 2020-03-05 2020-07-10 华电电力科学研究院有限公司 System and method for supplying water to wet desulphurization clean flue gas preheating heating heat supply network

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2750098C2 (en) * 1977-11-09 1986-09-04 Hans Sasserath & Co Kg, 4052 Korschenbroich Hot water heating system

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Publication number Publication date
ATE3584T1 (en) 1983-06-15
DE2965517D1 (en) 1983-07-07
EP0027827A1 (en) 1981-05-06

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