EP0562287A1 - Appareil de commande de puissance - Google Patents

Appareil de commande de puissance Download PDF

Info

Publication number
EP0562287A1
EP0562287A1 EP93102723A EP93102723A EP0562287A1 EP 0562287 A1 EP0562287 A1 EP 0562287A1 EP 93102723 A EP93102723 A EP 93102723A EP 93102723 A EP93102723 A EP 93102723A EP 0562287 A1 EP0562287 A1 EP 0562287A1
Authority
EP
European Patent Office
Prior art keywords
cam
switch
power
control device
power control
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
EP93102723A
Other languages
German (de)
English (en)
Other versions
EP0562287B1 (fr
Inventor
Jürgen Quiner
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.)
Haschkamp geb Dreefs Ernestine
Haschkamp Wolfgang Dipl-Kfm
Original Assignee
Haschkamp geb Dreefs Ernestine
Haschkamp Joachim Dipl-Ing
Haschkamp Wolfgang Dipl-Kfm
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 Haschkamp geb Dreefs Ernestine, Haschkamp Joachim Dipl-Ing, Haschkamp Wolfgang Dipl-Kfm filed Critical Haschkamp geb Dreefs Ernestine
Publication of EP0562287A1 publication Critical patent/EP0562287A1/fr
Application granted granted Critical
Publication of EP0562287B1 publication Critical patent/EP0562287B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • F24C15/106—Tops, e.g. hot plates; Rings electrically heated electric circuits

Definitions

  • the invention relates to a power control device with pulsed switching on and off, in which the ratio between switch-on time and switch-off time can be adjusted from a zero value (switch-off position) to a maximum power level via a control element.
  • Power control devices of this type for the controllable supply of electrical power to a consumer, in particular a hotplate, frequently use a heated bimetal with compensation bimetal which acts on a snap switch.
  • the power to be supplied to the consumer is set here via a control curve which acts on the bimetal control.
  • Known power control devices of this type control the power from about 7% to full load of 100%.
  • the 7% output was the smallest achievable output level so far, which for example forms the warming level for a hotplate.
  • 7% are often too much to keep warm and that energy is unnecessarily consumed.
  • a lower power level can only be set with a very large adjustment effort or not at all, because the manufacturing tolerances which occur in practice, in particular with the snap switch, make an adjustment difficult or impossible.
  • the object of the invention is to render the switching hysteresis, which hitherto prevented the reduction in power, ineffective and to create a power control device which is capable of switching even smaller powers reliably over a longer period of time.
  • the power control device is used for the controllable supply of electrical power in power pulses to a consumer, in particular to a hotplate.
  • the power control unit is designed as a cam switch which has a switch housing 10 with a cover cap 11 and rotatably supports an actuating shaft 12 on which a hollow camshaft 14 is rotatably mounted, which carries switching cams 16 for the main contacts 18 in a known manner.
  • the camshaft 14 also has a locking cam disk 20 which is provided with a locking recess 22 for the off position, a locking recess 24 for 5% output and a locking recess 26 for 100% output.
  • a spring-loaded locking plunger 28 is located in the locking recesses.
  • a control cam disk 30 On the end of the camshaft 14 opposite the locking cam disk 20 there is a control cam disk 30, on the outer circumference of which a cam follower 32 runs.
  • This cam follower is carried by an arm 34 which is connected to a yoke 36 which is pivotable about an axis 38 mounted in the housing parallel to the actuating shaft 12.
  • Another yoke 40 can be pivoted about the same axis 38, which has a leaf spring and an arm with a stop angle 44 in the manner of a cantilever.
  • a bearing bracket 46 of the arm 34 Above the stop bracket 44 is a bearing bracket 46 of the arm 34, which has an internal thread with an adjusting screw 48.
  • An extension spring 52 is anchored to an extension 50 of the arm 34 and engages the housing with its other end and prestresses the head of the adjusting screw 48 against the stop angle 44.
  • a switching bimetal 54 provided with a heating winding can be pivoted at one end about an axis lying below the axis 36 and extends essentially parallel to the leaf spring 42.
  • a pin 56 fixed to the bimetal 54 bears against the leaf spring 42 with its end.
  • the bimetal 54 acts on the contact spring 58 of the snap spring contacts 60.
  • the radial cam track of the control cam disk 30 has a section 62 with the smallest radius. If the cam follower 32 is located on this section, then the switch is in the zero position and the latching follower 28 fixes the rotational position of the actuating shaft by engaging in the central latching recess 22 of the latching cam disk 20.
  • the section 62 goes on the one hand into a switching cam 64 and on the other into one Control cam 66 over.
  • the control cam 68 adjoins the cam 64 with its radially lowest point 70. This is the position for 5% power (position according to FIG. 9). This position, as can be seen from FIG. 10, is locked in that the locking plunger 28 engages in the locking recess 24.
  • the control cam 68 rises from this point 70 to the control cam 66.
  • the cam follower is raised by this control cam 66, the actuating shaft is fixed in the recess 22 by the engagement of the latching follower 28. This is the position with 100% performance.
  • the power controller works as follows:
  • the actuating shaft is in the zero position, ie the main contacts 18 are interrupted and the snap spring contact 60 is lifted off its counter contact 72.
  • the locking plunger 28 lies in the central locking recess 22.
  • the cam tappet 32 lies in the section 62 of the control cam 30 between the cams 64 and 66.
  • the spring 52 pulls the adjusting screw 48 against the stop angle 44 and the leaf spring 42 presses on the pin 56 on the Bimetal 54, which in turn presses on the contact spring 58 and lifts the contact 60 from the counter-contact 72 against the action of the snap spring.
  • the cam follower 32 runs on the switching cams 34, the main contacts 18 being closed via the switching cams 16 (transition position according to FIGS. 4 and 5).
  • the lifting of the cam follower has the result that the leaf spring 42 releases the bimetal and the snap spring contact 60, 62 with Security closes.
  • the actuating shaft is pushed via the latching plunger into the latching position 24, in which, according to FIG. 9, the cam follower lies at the lowest point 70 of the cam track.
  • the bimetal 54 is provided with a heating winding which is live as long as the contacts 60, 72 are closed. Heating the bimetal causes it to deform and causes the contacts 60, 72 to open.
  • FIG. 3 shows a circuit in which it is necessary that the main contacts 18 have already closed when the bimetal control is seated at the highest point of the cam 64.
  • a hotplate 74 is provided, which is in series with the main switch contact 18 and the snap switch 60, 72 in voltage.
  • An operating indicator lamp 76 is connected to voltage via a signal contact 78.
  • a safety indicator lamp 80 is also provided, which is energized via a thermal contact 82 when the hotplate or the corresponding ceramic field is at a temperature exceeding a predetermined temperature. So that when the hotplate is switched on, the safety indicator lamp 80 comes on immediately, even if the contact 82 for the hot display in the thermostat is not yet closed, a bridge 84 is provided, by means of which the safety indicator lamp 80 is excited via the main switch contact 18.
  • connection bridge 84 there is no connection bridge 84.
  • main switch contacts 18 and signal contacts 78 should be open in the intermediate position in which the bimetal control is at the highest point of the control cam disk (see FIGS. 7 and 8).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Resistance Heating (AREA)
  • Thermally Actuated Switches (AREA)
  • Control Of Temperature (AREA)
EP93102723A 1992-03-23 1993-02-20 Appareil de commande de puissance Expired - Lifetime EP0562287B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209362 1992-03-23
DE4209362A DE4209362A1 (de) 1992-03-23 1992-03-23 Leistungssteuergerät

Publications (2)

Publication Number Publication Date
EP0562287A1 true EP0562287A1 (fr) 1993-09-29
EP0562287B1 EP0562287B1 (fr) 1996-10-23

Family

ID=6454778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102723A Expired - Lifetime EP0562287B1 (fr) 1992-03-23 1993-02-20 Appareil de commande de puissance

Country Status (2)

Country Link
EP (1) EP0562287B1 (fr)
DE (2) DE4209362A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934199C2 (de) * 1998-12-04 2002-01-10 Dreefs Gmbh Schaltgeraete Schaltungsanordnung für den Heizwiderstand einer Kochplatte eines Elektroherdes
US6365988B1 (en) 1998-12-04 2002-04-02 Dreefs Gmbh Schaltgerate Und Systeme Power controller for setting the power of the electrical loads of an electrical appliance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310867B2 (de) * 1973-03-05 1977-06-08 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Steuergeraet fuer elektrokochplatten
DE2422686C3 (de) * 1974-05-10 1978-04-20 Karl 7519 Oberderdingen Fischer Leistungssteuergerät für Elektrokoch- oder -wärmegeräte
DE2650824A1 (de) * 1976-11-06 1978-05-11 Licentia Gmbh Energieregler fuer elektrokochplatten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310867B2 (de) * 1973-03-05 1977-06-08 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Steuergeraet fuer elektrokochplatten
DE2422686C3 (de) * 1974-05-10 1978-04-20 Karl 7519 Oberderdingen Fischer Leistungssteuergerät für Elektrokoch- oder -wärmegeräte
DE2650824A1 (de) * 1976-11-06 1978-05-11 Licentia Gmbh Energieregler fuer elektrokochplatten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19934199C2 (de) * 1998-12-04 2002-01-10 Dreefs Gmbh Schaltgeraete Schaltungsanordnung für den Heizwiderstand einer Kochplatte eines Elektroherdes
US6365988B1 (en) 1998-12-04 2002-04-02 Dreefs Gmbh Schaltgerate Und Systeme Power controller for setting the power of the electrical loads of an electrical appliance

Also Published As

Publication number Publication date
DE59304235D1 (de) 1996-11-28
EP0562287B1 (fr) 1996-10-23
DE4209362A1 (de) 1993-09-30

Similar Documents

Publication Publication Date Title
DE2625716B2 (de) Leistungssteuergerät
DE2149404A1 (de) Belichtungseinrichtung fuer elektrophotographische reproduktionsgeraete
EP0268098B1 (fr) Appareil de commutation électrique, en particulier pour commande de puissance
EP0898291B1 (fr) Appareil de commande de puissance
DE2850389C3 (de) Temperaturregler für Elektrowärmegeräte, insbesondere für Elektrokochplatten
DE2625715A1 (de) Leistungssteuergeraet
EP0562287B1 (fr) Appareil de commande de puissance
EP0079483B1 (fr) Dispositif de commande pour une plaque de cuisson électrique
EP0361073A1 (fr) Machine à préparer des boissons chaudes avec chauffe-eau continu à deux puissances
DE2511214C2 (de) Temperaturregeleinrichtung für elektrische Geräte
DE3204638A1 (de) Temperaturschalter
DE2435151A1 (de) Elektrischer leistungsregler
DE3610968C2 (de) Blockiervorrichtung für die Tür einer Waschmaschine, insbesondere einer Haushaltswaschmaschine
DE3008756C2 (de) Verriegelungsvorrichtung für eine Haushaltsmaschine o.dgl.
DE2343834A1 (de) Tamperaturbegrenzer
EP0339269A1 (fr) Appareil de distribution pour appareils de chauffage ou similaires
DE69408716T2 (de) Energie Regler
DE3431740A1 (de) Temperatursteuereinrichtung fuer einen backofen
DE660764C (de) Waermezeitschalter mit Handbedienung
DE1002082C2 (de) Einrichtung zum zeitverzoegerten OEffnen der Kurzschlussverbindung zwischen den Vorheizelektroden einer Gasentladungslampe
DE3525093C2 (fr)
EP0043406B1 (fr) Elément interrupteur de protection pour être ajouté à un appareil interrupteur construit comme interrupteur rotatif
EP0901309A2 (fr) Regulateur de puissance
DE3443613C1 (de) Thermisches Zeitglied eines Feuerungsautomaten
DE2653614A1 (de) Stromkreisunterbrecher

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19930729

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

17Q First examination report despatched

Effective date: 19951017

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19961001

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59304235

Country of ref document: DE

Date of ref document: 19961128

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010207

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010215

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010308

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010430

Year of fee payment: 9

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020903

EUG Se: european patent has lapsed

Ref document number: 93102723.9

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050220