EP0274459A2 - Thermostat zur Überwachung des Betriebs eines Geräts im allgemeinen - Google Patents

Thermostat zur Überwachung des Betriebs eines Geräts im allgemeinen Download PDF

Info

Publication number
EP0274459A2
EP0274459A2 EP88830003A EP88830003A EP0274459A2 EP 0274459 A2 EP0274459 A2 EP 0274459A2 EP 88830003 A EP88830003 A EP 88830003A EP 88830003 A EP88830003 A EP 88830003A EP 0274459 A2 EP0274459 A2 EP 0274459A2
Authority
EP
European Patent Office
Prior art keywords
thermostat
resilient blade
coupled
casing
ing
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Withdrawn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
EP88830003A
Other languages
English (en)
French (fr)
Other versions
EP0274459A3 (de
Inventor
Antonio Pollina
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.)
PRODIGY ITALIANA Srl
Original Assignee
PRODIGY ITALIANA Srl
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 PRODIGY ITALIANA Srl filed Critical PRODIGY ITALIANA Srl
Publication of EP0274459A2 publication Critical patent/EP0274459A2/de
Publication of EP0274459A3 publication Critical patent/EP0274459A3/de
Withdrawn legal-status Critical Current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
    • H01H37/04—Bases; Housings; Mountings

Definitions

  • the present invention relates to a ther-mostat for controlling the operation of apparatus and devices in general.
  • thermostats for controlling the operation of said apparatus which use,as a responsive element,an expansible plenum chamber,coupled to a probe member,containing a liquid and which changes its operating volume as the tempera­ture changes.
  • thermostatic assemblies Another drawback of known thermostatic assemblies is that the electric thermostatic elements have a comparatively large size and,moreover,are scarcely reliable.
  • the task of the present invention is to overcome the above mentioned drawbacks,by provid severely ing a thermostat for controlling the operation of apparatus and devices in general which is so designed as to quickly respond to the temperature variations.
  • thermostat for controlling the operation of apparatus in general which is of very reduced outer size and very simple construction-wise.
  • Yet another object of the present invention is to provide such an electric thermostat which can be made by a very reduced number of component elements susceptible to be easily and quickly assembled and which,owing to its constructional features,is very reliable in operation.
  • a thermostat for controll­ing the operation of apparatus in general,characteriz­ed in that it comprises a box-like casing including an expandible plenum member coupled,through a capillary element,to a probe containing a expansible liquid.
  • the mentioned plenum member or chamber is arranged between an adjusting abutment and an operating lever which,at one end thereof,acts on a resilient blade supporting a movable contact coupled to the electrical input.
  • This movable contact under the control of the resilient blade,can be selectively contacted both with a first and a second fixed contacts which are coupled to the electrical output.
  • the thermostat for controlling the operation of apparatus and devices in general according to the present invention comprises a box-like casing or body, consisting of a supporting casing 1 thereto can be snap coupled a closure cover 2 which is preferably made of a plastics material.
  • an expansible plenum member 3 which is coupled, through a capillary element 4,to a probe,not shown in the drawings,and provided for holding a liquid the volume of which is susceptible to vary depending on the temperature.
  • said probe is arranged near the region the temperature of which is to be controlled, in order to control the operation of the related device or apparatus.
  • the mentioned expansible plenum member in particular,is arranged,on a side,near an abutment member 5 operating as a calibrating member and is mounted inside an adjusting stem 6 coupled to the apparatus control knob,for setting the desired operating temperature,and which has not been shown in the drawing.
  • expansible plenum member 3 acts on the leg 7,forming an operating lever,of a bracket element 8 which,by its other leg,is coupled to the closure cover 2,at the affixing region of a small spring 9 holding in its position a washer 10 coupled to said adjusting stem 6.
  • the mentioned operating lever 7 is made of tempered steel and,at its free end,it supports a ceramics pad 12 contacting a resilient blade 15 which is supported by a fork member 17 coupled to the casing 2.
  • the resilient blade 15,at the region thereof supported between the legs of the fork member, is provided with a projecting boss 18 thereon the pad 12 acts.
  • the resilient blade 15 supports a movable contact 20,which is electrically coupled to the electric input 21.
  • said blade 15,at its middle portion is provided with a loop portion which,depending on the pressure exerted on the bent portion 18,causes the movable contact 20 to be displaced.
  • the movable contact 20,moreover, may be selectively contacted both with a first fixed contact 23 and with a second fixed contact 24 which fixed contacts are respec­tively coupled to output pins 25 and 26 accessible from the outside of the box-like casing.
  • the resilient blade 15 is preferably made of copper and berillium,whereas the movable and fixed contacts are made of silver so as to provide very good electrical contact conditions.
  • the present temperature value causes a position variation of the abutment member 5,which is obtained by means of the variation of the position of the adjusting stem 6 which,in actual practice,will vary the contact force between the abutment member 5 and the expandible plenum member 3 and,accordingly,the pushing force exerted by said plenum member 3 on the operating lever 7.
  • the thermostat according to the present invention of very reduced size and including a very reduced number of component elements,is very reliable in operation,both owing to the constructional accuracy and the very reduced number of component parts.
  • thermostat according to the present invention is that it can be easily and quickly calibrated.
  • the used materials may be any according to requirements.

Landscapes

  • Thermally Actuated Switches (AREA)
EP88830003A 1987-01-09 1988-01-08 Thermostat zur Überwachung des Betriebs eines Geräts im allgemeinen Withdrawn EP0274459A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2045787U IT209816Z2 (it) 1987-01-09 1987-01-09 Termostato per il controllo del funzionamento di apparecchiature in genere.
IT2045787U 1987-01-09

Publications (2)

Publication Number Publication Date
EP0274459A2 true EP0274459A2 (de) 1988-07-13
EP0274459A3 EP0274459A3 (de) 1990-05-30

Family

ID=11167244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88830003A Withdrawn EP0274459A3 (de) 1987-01-09 1988-01-08 Thermostat zur Überwachung des Betriebs eines Geräts im allgemeinen

Country Status (2)

Country Link
EP (1) EP0274459A3 (de)
IT (1) IT209816Z2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822567A2 (de) * 1996-07-30 1998-02-04 Firt S.r.l. Steuerthermostat für ein in Temperaturzyklen arbeitendes Gerät
EP0907196A1 (de) * 1997-10-01 1999-04-07 PRODIGY ITALIANA S.r.l. Thermostat mit hoher Betriebssicherheit zur Einstellung der Temperatur in elektrischen Geräten
CN114300305A (zh) * 2021-04-13 2022-04-08 慈溪市凯达温控器有限公司 一种新型液胀式温控器及其保护装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846883A (en) * 1954-11-24 1958-08-12 Robertshaw Fulton Controls Co Thermostat adjusting devices
US3022405A (en) * 1959-05-28 1962-02-20 Gen Motors Corp Thermostatic switch
GB1132923A (en) * 1966-08-04 1968-11-06 Ass Elect Ind Improvements in and relating to thermally responsive electric switch devices
EP0005191A1 (de) * 1978-04-13 1979-11-14 E.G.O. Regeltechnik GmbH Temperaturregler mit einem Schnappschalter und einem Ausdehnungsglied
EP0008609A1 (de) * 1978-09-05 1980-03-19 Emerson Electric Gmbh Thermostatischer Grob-Fein-Regler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846883A (en) * 1954-11-24 1958-08-12 Robertshaw Fulton Controls Co Thermostat adjusting devices
US3022405A (en) * 1959-05-28 1962-02-20 Gen Motors Corp Thermostatic switch
GB1132923A (en) * 1966-08-04 1968-11-06 Ass Elect Ind Improvements in and relating to thermally responsive electric switch devices
EP0005191A1 (de) * 1978-04-13 1979-11-14 E.G.O. Regeltechnik GmbH Temperaturregler mit einem Schnappschalter und einem Ausdehnungsglied
EP0008609A1 (de) * 1978-09-05 1980-03-19 Emerson Electric Gmbh Thermostatischer Grob-Fein-Regler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0822567A2 (de) * 1996-07-30 1998-02-04 Firt S.r.l. Steuerthermostat für ein in Temperaturzyklen arbeitendes Gerät
EP0822567A3 (de) * 1996-07-30 1998-10-14 Firt S.r.l. Steuerthermostat für ein in Temperaturzyklen arbeitendes Gerät
EP0907196A1 (de) * 1997-10-01 1999-04-07 PRODIGY ITALIANA S.r.l. Thermostat mit hoher Betriebssicherheit zur Einstellung der Temperatur in elektrischen Geräten
CN114300305A (zh) * 2021-04-13 2022-04-08 慈溪市凯达温控器有限公司 一种新型液胀式温控器及其保护装置
CN114300305B (zh) * 2021-04-13 2024-01-19 慈溪市凯达温控器有限公司 一种液胀式温控器

Also Published As

Publication number Publication date
IT8720457V0 (it) 1987-01-09
EP0274459A3 (de) 1990-05-30
IT209816Z2 (it) 1988-11-04

Similar Documents

Publication Publication Date Title
US2833895A (en) Temperature responsive control
USRE24268E (en) Zuckerman
US3164701A (en) Method of assembling thermostatic switches
US2493294A (en) Control device
EP0274459A2 (de) Thermostat zur Überwachung des Betriebs eines Geräts im allgemeinen
US3870985A (en) Thermostatic switch with solid state heater
US2820881A (en) Vacuum type coffee maker and cycling switch mechanism therefor
US2988621A (en) Thermoresponsive snap action switch
US2694766A (en) Thermostat construction for sadirons
US3720898A (en) Temperature-sensitive assist for temperature-controlled switch
US4698612A (en) Temperature limiting control
US2461903A (en) Thermostatic control
US3370142A (en) Condition detecting control with means to enable the system to return to its first position upon a slight change of condition
US3423713A (en) Thermostat construction
US2943177A (en) Thermostatic switch
US3870229A (en) Thermostat construction and electrical control system utilizing the same
US3238337A (en) Thermostatic switch having press fit motion translator member
US2769048A (en) Electrical apparatus
US3047705A (en) Thermostatic control device
US3530419A (en) Thermostat
US3218417A (en) Snap-acting thermostat with adjustment and thermally responsive means in series
US4755786A (en) Thermostat
US3431527A (en) Thermostatic snap-acting switch
US2824933A (en) Miniature switch
US2993969A (en) Control apparatus

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE DE ES FR GB NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE DE ES FR GB NL SE

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19900716