EP0281995A2 - Chauffe-eau instantané électrique - Google Patents

Chauffe-eau instantané électrique Download PDF

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Publication number
EP0281995A2
EP0281995A2 EP88103596A EP88103596A EP0281995A2 EP 0281995 A2 EP0281995 A2 EP 0281995A2 EP 88103596 A EP88103596 A EP 88103596A EP 88103596 A EP88103596 A EP 88103596A EP 0281995 A2 EP0281995 A2 EP 0281995A2
Authority
EP
European Patent Office
Prior art keywords
water heater
contact
instantaneous water
heater according
snap
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Withdrawn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
EP88103596A
Other languages
German (de)
English (en)
Other versions
EP0281995A3 (fr
Inventor
Wilhelm Klemm
Manfred Elflein
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.)
Forbach GmbH and Co KG
Original Assignee
Forbach 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 Forbach GmbH and Co KG filed Critical Forbach GmbH and Co KG
Publication of EP0281995A2 publication Critical patent/EP0281995A2/fr
Publication of EP0281995A3 publication Critical patent/EP0281995A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/002—Thermally-actuated switches combined with protective means
    • 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase switches

Definitions

  • the invention relates to an electric instantaneous water heater according to the preamble of patent claim 1.
  • an electric instantaneous water heater of this type is known, in which the heating circuit is closed with the initiation of the tapping process via a multi-pole operating switch contact device controlled by a water switch.
  • the multi-pole switch contact device consists of a triple snap spring contact arrangement which is actuated via a lever system which is operatively connected to the water switch.
  • a safety switching device for a water heater of the aforementioned type is known from DE-B-15 40 906 and DE-B-22 58 850.
  • the operating switch contact device and the safety switching device are two completely separate structural units or components of the instantaneous water heater, which require a corresponding outlay in terms of production and in the use of materials and time in final assembly.
  • the invention has for its object to reduce the effort outlined above and to provide a structurally simplified switching device for a water heater of the type mentioned.
  • Fig. 1 of the drawing denotes the indicated differential pressure socket of a so-called water switch, not shown, which can be connected to the cold water supply line of an electrically heated water heater for three-phase connection.
  • a lifting diaphragm which is raised by the differential pressure when water is drawn off and which raises or pushes a switching plunger 2.
  • the shift plunger 2 works together with a lever system 3, which consists of a pivotably mounted angle lever 4 and three pivotable, multi-arm shift levers 5.
  • Each of the shift levers 5 works together with a contacted snap spring 6 and holds when the Water heater whose contact 7 in the open position.
  • the contacted snap spring 6 is part of a U-shaped one-piece snap spring contact arrangement 8, the other contacted snap spring 9 is held with its contact 10 by the lever arm 11 of a further lever system 12 during normal operation in the circuit closed position.
  • the lever system 12 is also pivotally mounted and is latched to a two-armed lever 14 held under the action of a spring element 13.
  • One arm 14 ⁇ of the two-armed lever 14 works with an electric magnet 15 of a safety switching device which can be placed at an excess temperature, while the other arm 14 ⁇ is influenced by an occurrence of overpressure in the flow system of the flow heater, which is responsive to the overpressure safety device 16.
  • the snap spring contact arrangement 8, of which three are required in a water heater with three-phase connection, are held on an insulating support 17 and separated from one another by intermediate webs 18, 18 18.
  • the two U-legs of the snap or spring contact arrangement 8, of which one 6 carries the movable contact 7 of the operating switch contact device, the other 9 carries the movable contact 10 of the safety switching device, are connected to one another by a flat web 19.
  • the contact arrangement 8 is fixed and fastened to the insulating support 17 with the flat web 19.
  • the insulating support 17 practically represents the connecting part between the operating switch contact device on the one hand and the safety switching device on the other.
  • the U-shaped contact arrangement 8 In the manufacture of the U-shaped contact arrangement 8 from a rolled metal strip, it is particularly expedient that its snap or spring springs placed or running transversely to the rolling device of the metal strip . be formed. As a result, the relaxation behavior (flexural fatigue strength) that works better in this direction is used.
  • the described device works as follows: With a corresponding water flow rate, the lifting diaphragm in the differential pressure cell 1 is raised accordingly by the dynamic pressure that occurs, and the switching plunger 2 is thus brought upwards. The movement of the switching plunger 2 is on the angle lever 4 transmitted, which thereby pivoted about its pivot point and thereby also pivoted the shift lever 5 held in operative connection with it about its pivot point. The contacted snap spring 6 of the contact arrangement 8 is relieved and goes into the closed position with the stationary counter contact 7 ⁇ . The heating circuit for the instantaneous water heater is closed.
  • the two-armed lever 14 of the safety switching device is actuated either by the electro-magnet 15 receiving voltage at excess temperature, which triggers the lever system 12 holding the movable contact 10 ⁇ in the closed position and the snap spring 9 with its contact 10 abruptly in the contact open position snaps or jumps.

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)
  • Fluid Mechanics (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Cookers (AREA)
EP88103596A 1987-03-12 1988-03-08 Chauffe-eau instantané électrique Withdrawn EP0281995A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873707967 DE3707967A1 (de) 1987-03-12 1987-03-12 Elektrischer durchlauferhitzer
DE3707967 1987-03-12

Publications (2)

Publication Number Publication Date
EP0281995A2 true EP0281995A2 (fr) 1988-09-14
EP0281995A3 EP0281995A3 (fr) 1990-07-04

Family

ID=6322868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103596A Withdrawn EP0281995A3 (fr) 1987-03-12 1988-03-08 Chauffe-eau instantané électrique

Country Status (2)

Country Link
EP (1) EP0281995A3 (fr)
DE (1) DE3707967A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234579A1 (de) * 1992-10-14 1994-04-21 Heinrich Kissling Gmbh & Co Kg Schalteinrichtung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227358C2 (de) * 1992-08-19 1995-06-22 Kulmbacher Klimageraete Vorrichtung zum Schalten der Heizenergiezufuhr eines elektrischen Durchlauferhitzers
DE4309117C2 (de) * 1993-03-23 1997-09-04 Bosch Gmbh Robert Elektrisch beheizter Wassererhitzer, insbesondere Durchlauferhitzer
DE4401670C2 (de) * 1994-01-21 1995-11-30 Kulmbacher Klimageraete Anordnung zum Steuern der Heizenergiezufuhr zu den Heizwicklungen eines elektrischen Durchlauferhitzers
DE19635973C2 (de) * 1996-09-05 2000-02-10 Stiebel Eltron Gmbh & Co Kg Netzspannungs-Schaltvorrichtung, insbesondere für einen Durchlauferhitzer
DE19919949C5 (de) * 1999-04-30 2013-03-07 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung mit einem Sicherheitsschalter

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE488906A (fr) * 1948-05-10
DE1020130B (de) * 1956-07-06 1957-11-28 Eckerfeld Alfred Elektrischer Fluessigkeitserhitzer
DE1062845B (de) * 1957-12-14 1959-08-06 Eckerfeld Alfred Elektrischer Fluessigkeitserhitzer
DE1179314B (de) * 1962-10-01 1964-10-08 Licentia Gmbh Elektrischer Durchlauferhiter
DE1540906B2 (de) * 1965-03-29 1972-07-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Sicherheitsschaltung fuer elektrisch beheizte durchlauferhitzer
FR1488362A (fr) * 1966-05-31 1967-07-13 Cotherm Sa Perfectionnements aux dispositifs thermostatiques de réglage d'une installation de chauffe électrique
US3781520A (en) * 1971-12-06 1973-12-25 Gardom & Lock Ltd Electric instantaneous water heater
DE2258850B2 (de) * 1972-12-01 1977-03-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Sicherheitsschalteinrichtung fuer einen elektrisch beheizten durchlauferhitzer
DE2625266C2 (de) * 1976-06-04 1983-06-16 E.G.O. Elektro-Geräte AG, 6301 Zug Schnappschalter mit einer Schnappfeder
DE3039383A1 (de) * 1980-10-18 1982-05-19 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Durchlauferhitzer
US4400628A (en) * 1982-02-16 1983-08-23 General Electric Company Control device and method of making
DE3438304C2 (de) * 1984-10-19 1986-10-09 Leopold Kostal GmbH & Co KG, 5880 Lüdenscheid Elektrischer Schnappschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234579A1 (de) * 1992-10-14 1994-04-21 Heinrich Kissling Gmbh & Co Kg Schalteinrichtung

Also Published As

Publication number Publication date
EP0281995A3 (fr) 1990-07-04
DE3707967A1 (de) 1988-09-22

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