EP0036068A2 - Installation de chauffage à eau chaude - Google Patents

Installation de chauffage à eau chaude Download PDF

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Publication number
EP0036068A2
EP0036068A2 EP81100451A EP81100451A EP0036068A2 EP 0036068 A2 EP0036068 A2 EP 0036068A2 EP 81100451 A EP81100451 A EP 81100451A EP 81100451 A EP81100451 A EP 81100451A EP 0036068 A2 EP0036068 A2 EP 0036068A2
Authority
EP
European Patent Office
Prior art keywords
flow
differential pressure
return
valve
temperature
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.)
Ceased
Application number
EP81100451A
Other languages
German (de)
English (en)
Other versions
EP0036068A3 (fr
Inventor
Arend Sasserath
Willi Hecking
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 EP0036068A2 publication Critical patent/EP0036068A2/fr
Publication of EP0036068A3 publication Critical patent/EP0036068A3/fr
Ceased 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
    • 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

Definitions

  • the invention relates to a hot water heating system
  • 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, by means of which the water flow through the individual radiators in dependence can be regulated by the room temperatures and the setpoints set on the radiator valves, a circulation pump between the hot water generator and the flow and a differential pressure controller, which 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 value is exceeded Differential pressure a parallel to the radiator short-circuit connection is more or less releasable, in which a switching contact is provided on the differential pressure regulator, which opens when the differential pressure ck exceeds a predetermined response point at which this Switching contact is in the control circuit of the heat source and in which the differential pressure controller contains a mixing valve, which is arranged parallel to the overflow valve between the flow and return and is controlled
  • a hot water heating system controlled by a differential pressure regulator is the subject of European laid-open specification 0 001 826 (DE-OS 27 50 098). 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 the overflow valve is opened, the heat source, e.g. an oil burner, turned 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.
  • a heat exchanger through which the heating water flows is provided as the water heater for the preparation of hot process water, which is in series with a thermostatically controlled valve between the flow and the return.
  • the valve will controlled by a heat sensor depending on the hot water temperature.
  • a switch contact is activated by the heat sensor, which switches the burner on regardless of the heat demand in the heating circuit. Additional control equipment for hot water preparation is required.
  • the differential pressure regulator contains a parallel to the overflow valve between flow and return arranged, controlled by the temperature of the feed water admixing valve, which opens when the temperature of the feed water falls below a predetermined value.
  • the admixing valve opens, which causes the pressure difference at the differential pressure regulator to collapse and the overflow valve to close so that the heat source is switched on again.
  • the invention has for its object to control the heat source of a heating system provided with water heater with simple means so that the heat source is switched on both when the radiator needs heat and when the water heater needs heat and when the temperature falls below a predetermined permissible flow temperature.
  • this object is achieved in that the differential pressure regulator with the overflow valve and the parallel mixing valve in series with one switched between flow and return, serving as a water heater, heat exchanger between them and the return is switched on.
  • a particularly advantageous embodiment of the invention is the subject of claim 2.
  • 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 21.
  • the interior of the valve seat 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 under the influence of a Load spring 36 is present.
  • the plunger 36 forms a flange 38 on which the switching arm 40 of a microswitch 42 bears.
  • 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 pretensioning of the spring 36.
  • the spring 36 is supported on a straight nut 44 which is guided on a threaded spindle 48 which can be rotated by means of an adjusting knob 46.
  • the differential pressure regulator contains an admixing valve 50, which is arranged parallel to the overflow valve 22, 26 between 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 that bypasses the regulator valve 22, 26 of the differential pressure regulator.
  • the admixing valve 50 is controlled by a thermostat 54 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 Thermistat is always acted upon by the true flow temperature and not by a temperature which deviates from the flow temperature and which is in one of the flow of the flow water kept separate side branch.
  • 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 to form the admixing valve 50 the end faces of the valve closing body 56 are attached to this.
  • the thermostat 54 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 54 protrudes through a central opening in this plate 66.
  • the expansion working element forming the thermostat 54 is supported on the 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 quickly releases a passage cross section which forces the differential pressure to drop below the said response point after the opening point has been exceeded.
  • 70 denotes a boiler which contains a burner 72 as a heat source.
  • a circulation pump 74 conveys heating water via a flow 76 to a radiator system 78, from which the heating water flows back to the boiler 70 via a return 80.
  • a heat exchanger 82 serving as a water heater.
  • a device 84 of the type shown in FIG. 1 with the overflow valve 22, 26 with the connections 18 and 24 and the admixing valve 50 parallel to it.
  • valves 22, 26 and 50 are shown separately in the schematic illustration in FIG. 2.
  • the reference symbol 86 denotes the actual heating controller.
  • the admixing valve 50 parallel to the overflow valve 22, 26 is controlled by the thermostat 54 in the bypass channel 52, in which, as stated, a minimum flow is constantly maintained.
  • the thermostat 54 responds and opens the admixing valve 50, as a result of which the pressure difference between flow 76 and return 80 drops and the burner 72 is also switched on via the microswitch 42.
  • the admixing valve 50 In the open position, the admixing valve 50 preferably offers a very low flow resistance in comparison to the radiator system, so that there is a small pressure loss at the admixing valve 50.
  • the pressure difference available for the radiator system 78 breaks down very sharply, so that practically no heating water flows over the radiator system and the entire boiler output is used to heat the water heater.

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)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP81100451A 1980-03-14 1981-01-22 Installation de chauffage à eau chaude Ceased EP0036068A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803009790 DE3009790A1 (de) 1980-03-14 1980-03-14 Warmwasser-heizungsanlage
DE3009790 1980-03-14

Publications (2)

Publication Number Publication Date
EP0036068A2 true EP0036068A2 (fr) 1981-09-23
EP0036068A3 EP0036068A3 (fr) 1981-11-04

Family

ID=6097186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100451A Ceased EP0036068A3 (fr) 1980-03-14 1981-01-22 Installation de chauffage à eau chaude

Country Status (2)

Country Link
EP (1) EP0036068A3 (fr)
DE (1) DE3009790A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807327A1 (de) * 1988-03-05 1989-09-14 Gerhard Rambacher Warmwasser-heizungsanlage
AT394426B (de) * 1989-12-15 1992-03-25 Vaillant Gmbh Ueberstroemventil
DE102021114426A1 (de) 2021-06-04 2022-12-08 Vaillant Gmbh Leckagedetektion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2750098C2 (de) * 1977-11-09 1986-09-04 Hans Sasserath & Co Kg, 4052 Korschenbroich Warmwasser-Heizungsanlage
DE2965517D1 (en) * 1979-10-06 1983-07-07 Sasserath & Co Kg H Hot-water heating system

Also Published As

Publication number Publication date
DE3009790A1 (de) 1981-09-24
EP0036068A3 (fr) 1981-11-04

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

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Effective date: 19811027

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Effective date: 19830803

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HECKING, WILLI

Inventor name: SASSERATH, AREND