EP0018469A1 - Interrupteur de thermorégulation - Google Patents

Interrupteur de thermorégulation Download PDF

Info

Publication number
EP0018469A1
EP0018469A1 EP80100722A EP80100722A EP0018469A1 EP 0018469 A1 EP0018469 A1 EP 0018469A1 EP 80100722 A EP80100722 A EP 80100722A EP 80100722 A EP80100722 A EP 80100722A EP 0018469 A1 EP0018469 A1 EP 0018469A1
Authority
EP
European Patent Office
Prior art keywords
temperature control
cam
control switch
adjustment
switch contact
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
EP80100722A
Other languages
German (de)
English (en)
Other versions
EP0018469B1 (fr
Inventor
Otto Dipl.-Ing. Koehn
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0018469A1 publication Critical patent/EP0018469A1/fr
Application granted granted Critical
Publication of EP0018469B1 publication Critical patent/EP0018469B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/04—Combination of a thermally actuated switch with a manually operated switch

Definitions

  • the invention relates to a temperature control switch according to the preamble of the first claim.
  • temperature control switches of this type it is very well known in temperature control switches of this type to actuate an on-off switch contact at the beginning or at the end of the possible adjustment path, while the adjustment device can be freely rotated or shifted over the remaining adjustment path by different switching temperatures for a temperature-dependent switch contact to specify.
  • a temperature control switch designed in this way is suitable for continuous temperature control over a predetermined temperature range. However, if two different temperature ranges are to be covered in one device, then two separate temperature control switches are also required.
  • the object of the invention is to provide a temperature control switch according to the preamble of the first claim, which has two separate temperature control ranges and can be operated and manufactured in a simple manner.
  • the entire locking path of the adjustment device is thus divided into adjustment paths with corresponding temperature control ranges by the drive-over locking device.
  • the latching device In order to get from one temperature control range to another, the latching device must first be overcome. Incorrect settings cannot be unintentionally, e.g. by . Bump into the adjusting device.
  • control can be carried out in two separate temperature control ranges without having to use electrical or mechanical switching devices.
  • the use of a temperature control switch designed in this way is particularly advantageous in refrigerators if, on the one hand, it is in a temperature range of e.g. 0 ° C to plus 6 ° C for the usual cooling and on the other hand for keeping vegetables and tropical fruits fresh in a temperature range of e.g. 6 ° C to plus 15 ° C should be operated.
  • a temperature control switch 1 is provided with an on-off switch contact 2 and with a temperature-dependent controlled switch contact 2.
  • a switching pin 4 is associated with the on-off switching contact 2 and cooperates with a cam track 5.
  • a recess 6 is provided in the cam track 5 as a cam.
  • the switch contact 3 is equipped with a touch finder 7, which runs on a cam track.
  • the cam track 5 and the cam track are fastened on a common shaft which can be rotated by hand, as a result of which an adjusting device for the switching contact 3 and the on-off switching contact 2 is formed.
  • the cam track has a constant radius over an adjustment section 9 provided in its central region.
  • This adjustment path 9 extends over an angle of rotation 10, which is predetermined by the length of the recess 6 in the circumferential direction.
  • the adjustment path 9 with a constant radius is followed by a further adjustment path 11 in one direction of rotation of the cam track, the radius of which decreases as far as an end stop 12, while an adjustment path 13 with increasing radius adjoins the adjustment path 9 in the opposite direction of rotation.
  • the adjustment path 13 extends to an end stop 14.
  • the switching pin 4 has fallen into the recess 6 of the cam track 5 and the on-off. switch 2 is inevitably in its off position position.
  • the recess 6 forms, together with the spring-loaded switching pin 4, a locking device which can be driven over in both directions of rotation. Accordingly, as soon as the switching pin 4 is raised over its inclined flanks by the edges of the recess 6 onto the cam track 5 which continues with a constant radius, the on-off switching contact 2 is moved in its switched-on position.
  • the touch finger 7 When the switching pin 4 has fallen into the recess 6, the touch finger 7 is located on the adjustment path 9, the radius of which specifies a switching temperature of, for example, plus 6 ° C. for the temperature-controlled switching contact 3.
  • the sensor 15 of the switch contact 3 is preferably located in a cooling device, the temperature of which should be lower than plus 6 ° C at the moment of observation. Therefore, the switch contact 3 is open in this case. If the cam track 5 and the cam track firmly connected to it are rotated on the setting shaft 8 such that the adjustment path 11 of the cam track slides under the finger 7, then the on-off switch contact 2 is first brought into its switch-on position and the temperature-controlled switch contact 3 specifies a target temperature, which is reduced, for example, to 0 ° C.
  • the adjustment path 11 has its smallest radius. As soon as the actual temperature at the sensor 15 falls below the temperature specified by the adjustment path 11, the switch contact 3 is closed and, for example, the cooling unit of the cooling device is switched on. After reaching the target temperature, the switching contact switches the cooling unit off again through the action of the sensor 15.
  • the range of plus 6 ° C to 0 ° C corresponds to the temperature range of a refrigerator for normal cooling.
  • the cooling device is to be operated in a temperature range of, for example, plus 6 ° C. to plus 15 ° C. in order to be able to store vegetables and tropical fruits or the like, then the setting shaft 8 is rotated as long as it travels over the locking device 4, 6 and the adjustment distance 9 until the adjustment path 13 of the cam path reaches under the finger 7. Due to the increasing radius of this adjustment path 13, the temperature-controlled switching contact 3 also specifies a higher setpoint switching temperature via the touch finger 7, to which the cooling device is tracked in the usual way with the aid of the sensor 15.
  • the shape of the cam track has been changed so that the two temperature setting ranges have their respective maximum value when the stylus 7 is in the area of the end stops 12 and 14.
  • the adjustment path 9 has an incline over the angle of rotation 10, which corresponds to the temperature difference between the respective lowest temperatures of the two temperature control ranges.
  • the on-off switch contact 2 is closed when the setting shaft 8 is rotated, and first of all via the adjustment path 11 or the adjustment path 13 Lowest target temperature value of the temperature range to be covered is specified. This ensures that, starting from the zero position in the area of the latching device 4, 6, the setpoint temperature is adjusted from the lowest to the associated highest temperature value in both directions of rotation.

Landscapes

  • Thermally Actuated Switches (AREA)
EP19800100722 1979-05-03 1980-02-13 Interrupteur de thermorégulation Expired EP0018469B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792917813 DE2917813A1 (de) 1979-05-03 1979-05-03 Temperaturregelschalter
DE2917813 1979-05-03

Publications (2)

Publication Number Publication Date
EP0018469A1 true EP0018469A1 (fr) 1980-11-12
EP0018469B1 EP0018469B1 (fr) 1983-02-23

Family

ID=6069822

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800100722 Expired EP0018469B1 (fr) 1979-05-03 1980-02-13 Interrupteur de thermorégulation

Country Status (2)

Country Link
EP (1) EP0018469B1 (fr)
DE (1) DE2917813A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919337A (en) * 1956-07-18 1959-12-29 Joseph E Brosseau Co Temperature control for heating units
CH391057A (de) * 1962-03-21 1965-04-30 Elcalor Ag Bimetallschalter und Verwendung desselben
DE1565846A1 (de) * 1966-11-22 1970-05-14 Siemens Elektrogeraete Gmbh Schalteinrichtung fuer elektrische Waermegeraete

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819411A (en) * 1952-12-09 1958-01-07 Stensholms Fabriks Ab Electric energy regulators
US2870313A (en) * 1954-05-18 1959-01-20 Gen Motors Corp Domestic appliance
US2906845A (en) * 1955-12-22 1959-09-29 Proctor Electric Co Parallel heating unit wattage controller system
US3118044A (en) * 1960-11-10 1964-01-14 Westinghouse Electric Corp Control for cooking apparatus
US3403244A (en) * 1965-09-22 1968-09-24 Gen Motors Corp Low heat control system for infrared surface heating unit
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
US2919337A (en) * 1956-07-18 1959-12-29 Joseph E Brosseau Co Temperature control for heating units
CH391057A (de) * 1962-03-21 1965-04-30 Elcalor Ag Bimetallschalter und Verwendung desselben
DE1565846A1 (de) * 1966-11-22 1970-05-14 Siemens Elektrogeraete Gmbh Schalteinrichtung fuer elektrische Waermegeraete

Also Published As

Publication number Publication date
EP0018469B1 (fr) 1983-02-23
DE2917813A1 (de) 1980-11-06

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