EP0006554B1 - Installation de chauffage à eau chaude - Google Patents

Installation de chauffage à eau chaude Download PDF

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Publication number
EP0006554B1
EP0006554B1 EP79101975A EP79101975A EP0006554B1 EP 0006554 B1 EP0006554 B1 EP 0006554B1 EP 79101975 A EP79101975 A EP 79101975A EP 79101975 A EP79101975 A EP 79101975A EP 0006554 B1 EP0006554 B1 EP 0006554B1
Authority
EP
European Patent Office
Prior art keywords
hot water
pressure difference
switch contact
water heating
housing
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
EP79101975A
Other languages
German (de)
English (en)
Other versions
EP0006554A1 (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
Priority to AT79101975T priority Critical patent/ATE70T1/de
Publication of EP0006554A1 publication Critical patent/EP0006554A1/fr
Application granted granted Critical
Publication of EP0006554B1 publication Critical patent/EP0006554B1/fr
Expired 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
    • F24D19/1009—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

Definitions

  • the invention described in the aforementioned European patent application is intended to adapt the temperature of the heating water to the heat requirement with as little effort as possible. This is to prevent the thermostatic valves from having to extremely restrict the flow of the heating water through the individual radiators when the heat requirement is low (for example a relatively high outside temperature), which is disadvantageous in terms of control technology.
  • the invention according to the European patent application is based on the knowledge that the pressure difference between flow and return provides a measure of the heating requirement of the heating system, because this pressure difference is greater the more the thermostatic valves throttle the heating water flow. By switching off the heat source, the temperature of the heating water is lowered to such an extent that the thermostatic valves to cover the heating requirements of the heating system are open in a central area.
  • the heating can also be regulated down to a lower heating output, which is required, for example, during the night or when the heated building is not used for a long time.
  • a differential pressure switch is provided for this purpose between the flow and the return, by means of which a second switch contact is opened at a lower differential pressure than the differential pressure at which the overflow valve opens. Parallel to this second switch contact is a bypass contact, which is controlled by a timer and opens during the night.
  • the present invention has for its object to build a hot water heating system of the type defined in such a way that a separate differential pressure switch is unnecessary and a reduction in heating capacity is optionally made possible via the differential pressure regulator with the overflow valve.
  • this object is achieved in that a second switching contact is provided on the differential pressure regulator, which is in series with the first switching contact and opens at a lower differential pressure than this, and in that a bypass contact controlled by a time switch is connected in parallel with the second switching contact.
  • the differential pressure regulator has a regulator housing 10 with an inlet connector 12 and an outlet connector 14 arranged at right angles to the inlet connector 12.
  • the inlet port 12 communicates with an inlet chamber 16.
  • the inlet chamber 16 is separated from the outlet port 14 by a partition 18.
  • In the partition wall 18 there is a bore 20 which extends coaxially with the outlet connection 14 and which creates a connection between the inlet chamber 16 and the outlet connection 14.
  • the controller housing 10 also has an extension 22 in the extension of the outlet connector 14.
  • the neck 22 carries a shell-shaped housing part 24.
  • This shell-shaped housing part 24 is connected by a flanged edge 26 to a likewise shell-shaped housing part 28.
  • a membrane 30 forming a lifting member is clamped between the two shell-shaped housing parts 24 and 28.
  • a cylindrical extension 32 of the housing 10 is in turn seated on the upper shell-shaped housing part 28.
  • the neck 22 of the housing 10 is hollow, so that the inlet chamber 16 continues via the neck 22 into the space within the bowl-shaped housing part 24 and thus adjoins the membrane.
  • the membrane 30 is connected to a valve tappet 34, which carries a valve closing grains 36 of the overflow valve.
  • the valve lifter 34 extends through the interior of the neck 22 and the inlet chamber 16.
  • the valve closing body 36 is cup-shaped and movable in the bore 20 which establishes the connection between the inlet chamber 16 and the outlet port 14.
  • the open end of the "pot" faces the outlet port 14.
  • the valve closing body 36 has lateral slots 38, via which a connection from the inlet chamber 16 through the interior of the valve closing body 36 to the outlet port 14 can be established after an initial stroke (upwards in FIG. 1).
  • the interior of the valve closing body 36 is connected via a cross bore 40 provided in the valve tappet 34 to the side of the membrane 30 facing away from the inlet chamber 16, namely to the space within the shell-shaped housing part 28.
  • the inlet connection 12 is connected to the flow of the hot water heating system, while the outlet connection 14 is connected to the return. Via the inlet chamber 16, therefore, the underside of the membrane 30 is acted upon by the pressure of the supply line and the top of the membrane 30 via the outlet connection 14, the interior of the valve body 36 and the cross bore 40 by the pressure in the return.
  • a flat cuboid housing 42 is seated on the controller housing 10. This housing 42 is detachably placed on the extension 32 of the controller housing 10 by means of a union nut 44. On the membrane 30 on the side facing away from the valve tappet 34, however, a cylindrical extension 46 is attached coaxially to the valve tappet 34. The cylindrical extension 46 is guided in an intermediate wall 48 of the housing extension 32, a seal 50 being provided between the extension 46 and the intermediate wall 48.
  • a plunger 52 is supported in a recess on the end face of the extension 46. The plunger 52 is sealingly guided in a plunger lead-through unit 54 inserted into the housing attachment 32 and is thus guided out of the regulator housing. The plunger lead-through unit is removable in the controller housing 10.
  • the housing 42 contains a pair of microswitches 56, 58 which in FIG. 1 are placed one behind the other on stud bolts and of which only one, namely the microswitch 56, is visible in FIG. 1.
  • the microswitches 56 and 58 are set so that they switch after different strokes of their feeler levers 60 in the opening sense.
  • the switching contact of the microswitch 58 is in series with the switching contact of the microswitch 56.
  • a bridging contact is connected in parallel with the switching contact of the microswitch 58 and is controlled by a timer 62 which is also arranged in the housing 42.
  • the microswitches 56, 58 are actuated by a spring plate 64 which sits on the plunger 52 and against which the sensor arms 60 of the microswitches 56, 58 rest.
  • a helical spring 66 which is supported on an abutment 68, presses onto the spring plate.
  • the abutment 68 is axially adjustable by means of an adjusting button 70, as a result of which the preload of the helical spring 66 can be adjusted.
  • the setting can be read on a scale 72.
  • a switch 74 with three positions.
  • the time switch 62 which opens the bypass contact parallel to the switching contact of the microswitch 58 during the nighttime and keeps this bypass contact closed during the daytime, switches to reduced heating power during the nighttime.
  • a switching contact lying in series with the bridging contact can be opened, so that the switching contact of the microswitch 58 is always effective, regardless of the switching position of the bridging contact. In this way, e.g. B. if the building heated by the hot water heating system is not used for a long time, the heating output can be kept at a reduced value.
  • the switching contact of the microswitch 58 can be kept permanently bridged in a third position, so that there is no changeover between day and night operation.
  • the electrical connection of the device takes place via a terminal block 76 and two cable connections 78, 80, via which the control line is fed in and also a mains lead to the time switch.

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)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Claims (10)

1. Installation de chauffage à eau chaude, comportant un générateur d'eau chaude muni d'une source de chaleur pouvant être branchée électriquement par l'intermédiaire d'un circuit de commande, un circuit de chauffage avec conduite de départ, radiateurs et conduite de retour, les radiateurs étant munis de robinets de radiateur commandés par la température et qui permettent de régler le débit d'eau traversant les radiateurs en fonction de la température des locaux et des valeurs de consigne chaque fois établies sur les soupapes de radiateur, une pompe de circulation entre générateur d'eau chaude et conduite de départ, et un régulatuer de pression différentielle branché entre la conduite de départ et la conduite de retour, présentant une valve de décharge et pouvant être libéré plus ou moins en fonction de la pression différentielle entre conduite de départ et conduite de retour lorsqu'un point de réponse prescrit d'une liaison de court-circuit branchée en parallèle aux radiateurs est dépassé, le régulateur de pression différentielle étant muni d'un contact de manoeuvre qui est fermé lorsque la valve de décharge est fermée et qui, lors de l'ouverture de celle-ci, s'ouvre également, ce contact de manoeuvre étant situé dans le circuit de commande de la source de chaleur, installation caractérisée en ce que le régulateur de pression différentielle est muni d'un deuxième contact de manoeuvre (58) relié en série au premier contact de manoeuvre (56) et s'ouvrant à une moindre pression différentielle que celui-ci, et en ce qu'en parallèle au deuxième contact de manoeuvre (58) est branché un contact de pontage commandé par un interrupteur horaire (62).
2. Installation selon la revendication 1, caractérisée en ce que la valve de décharge du régulateur de pression différentielle est commandée par un organe de levage (30) sollicité par ressort et subissant la pression différewcielle, et pendant une partie initiale de sa course d'ouverture, elle ne libère aucune section ou seulement une section minimale, et en ce que le deuxième contact de manoeuvre (58) s'ouvre pendant cette partie initiale de la course d'ouverture, tandis que le premier contact de manoeuvre (56) s'ouvre seulement quand la valve est ouverte, une fois que cette partie initiale de la course d'ouverture est dépassée.
3. Installation selon la revendication 2, caractérisée en ce que les contacts de manoeuvre sont formés de deux micro-interrupteurs (56, 58) maintenus côte à côte avec des points de commutation différents dans un boîtier (42) posé sur le régulateur de pression différentielle et pouvant être actionnés par un poussoir (52) relié à l'organe de levage (30).
4. Installation selon la revendication 3, caractérisée en ce que le boîtier (42) contient en même temps le ressort à boudin (66) sollicitant la valve de décharge, poussant sur un plateau de ressort (64) monté sur le poussoir (52) et s'appuyant contre une butée (68) réglable axialement.
5. Installation selon la revendication 4, caractérisée en ce que les micro-interrupteurs (56, 58) peuvent être actionnés par le bord du plateau de ressort (64).
6. Installation selon l'une quelconque des revendications 4 et 5, caractérisée en ce que le boîtier (42) contient en même temps l'interrupteur horaire (62), qui permet de commander le contact de pontage.
7. Installation selon l'une quelconque des revendications 2 à 6, caractérisée en ce que le régulateur de pression contient comme organe de levage (30) une membrane enserrée dans un boîtier de régulateur (10) et reliée à un poussoir de valve (34) qui porte un obturateur (36) de la valve de décharge, en ce que l'obturateur (36) est en cuvette et peut se mouvoir dans une perforation (20) établissant une liaison entre la chambre d'entrée (16) adjacente à la membrane et reliée à une tubulure d'entrée (12) et une tubulure de sortie (14), l'extrémité ouverte de la cuvette étant tournée vers la tubulure dl' -ortie (14), en ce que l'obturateur (36) pr&s( des fentes latérales (38) par lesquelles peut 3blir, après une course initiale, une liaisc Je la chambre d'entrée (16) à la tubular de sortie (14) par l'intérieur de l'obturateur (36) et en ce que l'intérieur de l'obturateur (36) est relié, par l'intermédiaire d'une perforation en croix (40) prévue dans le poussoir de valve (34), au côté de la membrane (30), qui est situé vers le ressort de sollicitation et opposé à la chambre d'entrée (16).
8. Installation selon l'une quelconque des revendications 3 à 7, caractérisée en ce que le poussoir (52) servant à actionner les micro-interrupteurs (56, 58) sort du boîtier de régulateur (10) de façon étanche grâce à un ensemble de traversée de poussoir (54) monté de façon , amovible dans le boîtier de régulateur (10).
9. Installation selon la revendication 8, caractérisée en ce que plus à l'intérieur que l'ensemble de traversée de poussoir (54), un joint (50) est prévu entre, d'une part, un appendice cylindrique (46) relié à la membrane (30) et sur lequel s'appuie le poussoir (52), et, d'autre part, le boîtier de régulateur (30).
10. Installation selon l'une quelconque des revendications 8 et 9, caractérisée en ce que le boîtier (42) contenant les micro-interrupteurs (56, 58) est disposé de facon détachable sur le boîtier de régulateur (10), et lorsqu'on a retiré le boitier (42), l'ensemble de traversée de poussoir (54) est accessible.
EP79101975A 1978-07-05 1979-06-15 Installation de chauffage à eau chaude Expired EP0006554B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79101975T ATE70T1 (de) 1978-07-05 1979-06-15 Warmwasser-heizungsanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782829415 DE2829415A1 (de) 1978-07-05 1978-07-05 Warmwasser-heizungsanlage
DE2829415 1978-07-05

Publications (2)

Publication Number Publication Date
EP0006554A1 EP0006554A1 (fr) 1980-01-09
EP0006554B1 true EP0006554B1 (fr) 1981-05-20

Family

ID=6043530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101975A Expired EP0006554B1 (fr) 1978-07-05 1979-06-15 Installation de chauffage à eau chaude

Country Status (3)

Country Link
EP (1) EP0006554B1 (fr)
AT (1) ATE70T1 (fr)
DE (2) DE2829415A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7343476U (de) * 1975-01-30 Rexroth G Gmbh Mechanischer Endschalter für Ventile, insbesondere Hydroventile
CH573563A5 (fr) * 1973-11-22 1976-03-15 Balzers Patent Beteilig Ag
DE2649033B2 (de) * 1976-10-28 1981-06-25 Wella Ag, 6100 Darmstadt Differenzdruck-Überströmventil
DE2650838A1 (de) * 1976-11-06 1978-05-11 Bieri Pumpenbau Ag Umlaufheizungsanlage
DE2750098C2 (de) * 1977-11-09 1986-09-04 Hans Sasserath & Co Kg, 4052 Korschenbroich Warmwasser-Heizungsanlage

Also Published As

Publication number Publication date
EP0006554A1 (fr) 1980-01-09
DE2829415A1 (de) 1980-01-24
DE2960372D1 (en) 1981-08-27
ATE70T1 (de) 1981-06-15

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