EP0107152A1 - Thermostat - Google Patents

Thermostat Download PDF

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Publication number
EP0107152A1
EP0107152A1 EP83110198A EP83110198A EP0107152A1 EP 0107152 A1 EP0107152 A1 EP 0107152A1 EP 83110198 A EP83110198 A EP 83110198A EP 83110198 A EP83110198 A EP 83110198A EP 0107152 A1 EP0107152 A1 EP 0107152A1
Authority
EP
European Patent Office
Prior art keywords
snap switch
switching device
housing
temperature switching
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.)
Granted
Application number
EP83110198A
Other languages
German (de)
English (en)
Other versions
EP0107152B1 (fr
Inventor
Bruno Lotter
Willi Essig
Hans Mayer
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer 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 EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT83110198T priority Critical patent/ATE20404T1/de
Publication of EP0107152A1 publication Critical patent/EP0107152A1/fr
Application granted granted Critical
Publication of EP0107152B1 publication Critical patent/EP0107152B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H35/26—Details
    • H01H35/2657—Details with different switches operated at substantially different pressures
    • 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
    • H01H35/26—Details
    • H01H35/2671—Means to detect leaks in the pressure sensitive element
    • 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
    • H01H9/02—Bases, casings, or covers

Definitions

  • the invention relates to a temperature switching device with a housing which has receptacles for a plurality of snap switches and with an actuating element to be arranged in the housing, which comprises an expansion element and a transmission mechanism for acting on the snap switch or switches.
  • Such a temperature switching device has become known from GB-PS 940 105.
  • Several snap switches are arranged parallel to each other in an insulating part, which covers one side of the box-like housing and itself forms a box open at the top.
  • the four snap switches next to each other are covered by a common insulating cover that carries the connections for the snap switch.
  • a switch with several snap switches that can be operated independently of one another is thus constructed.
  • numerous different temperature switching devices are required, which are essentially have the same structure, but differ in the number and type of contacts to be switched (e.g. switch or changeover switch) and in the way they are operated (adjustment via control shaft or fixed setting) and in some cases have to meet special requirements (leakage safety, safety switch).
  • the object of the invention is to provide a temperature switching device which is more profitable and can be produced with a minimum of rejects.
  • each snap switch with an insulating snap switch base forms an independent, separate component which can be connected to the housing in a modular manner for the optional construction of a single-pole or multi-pole switching device.
  • the actuating element can advantageously be arranged on the housing as an exchangeable unit. This increases the possible variations even more because different actuating elements, for example with expansion boxes of different types and sizes, compensation or safety devices against leaks in the hydraulic system, can now be used together with the same housing and switch modules. If a number of different housing types with the same connection dimensions are also provided (for example with a manually adjustable control shaft or pushbutton reset of a safety switch), dozens of temperature switchgear versions can be built up using a modular combination of the basic components. The device is designed so that it is absolutely not necessary to always attach all of the snap switch bases forming the switch modules. The corresponding fields can be left blank if they are not required.
  • an insert preferably made of insulating material, is arranged on the housing, which has on its outward-facing side the gutter-like or box-like receptacles into which the snap switch bases can be inserted from the outside in such a way that each snap switch in a gutter or box-shaped receptacle and the snap switch base closes the receptacle to the outside.
  • the recordings themselves also form an insulating closure of the interior of the housing.
  • the snap switch bases can be narrow, elongated assemblies, several of which are to be arranged in parallel in the receptacles. If they are arranged in this way, the side-by-side snap switch bases at least partially close the housing.
  • the housing therefore only needs to be a cup-shaped sheet metal part, the open side of which is closed on the one hand by the insert and on the other hand by the snap switch bases.
  • Each snap switch base preferably carries the external connections belonging to its snap switch, so that it is electrically self-sufficient and no electrical connections within the switch or between the individual snap switches are necessary for the function of the snap switch itself.
  • the actuating element can have a preferably plate-shaped lever, on which the expansion member and, optionally adjustable, at least one transfer plunger for acting on the snap switches is attached.
  • the actuating element can advantageously be attached to the housing in an exchangeable manner by means of an axle that supports the lever and is in turn mounted in the housing walls.
  • each transfer plunger can be attached to an individual spring tongue, which preferably belongs to a comb-like spring plate part arranged parallel to the lever, which can advantageously be adjusted by an adjusting screw supported on the lever.
  • This arrangement creates an overload protection for the snap switch.
  • the force of the spring tongue is Although strong enough to ensure a play-free transmission of the movement of the expansion member via the transfer plunger to the snap switch, it can rebound if the snap switch is already actuated and the expansion member expands further, which is the case with multi-pole snap switches that switch at different temperatures is. It also allows the very advantageous arrangement of an adjusting screw.
  • the temperature switching device shown in Figures 1 and 2 is for use as a single or multi-pole adjustable or fixed temperature controller, temperature limiter etc. provided. It has a housing 12 in the form of a rectangular or square box made of sheet metal, in the bottom 13 of which an adjusting nut 14 is inserted. It is fixed by a welded-on fastening tab 15. A section of an adjusting shaft 16, which is provided with an adjusting thread, is screwed into the adjusting nut, which at its outwardly projecting end presses a flattened portion for the rotationally fixed reception of an adjusting button (not shown) and with its inner end onto a pressure surface 17 of an adjusting member 18 designed as a membrane pressure cell.
  • the expansion member is a conventional expansion box, which consists of two wave-shaped metal membranes welded together in the edge area, on one side of which the pressure surface 17 and on the other side a connecting piece 19 is welded.
  • a capillary tube 20 leads into the connecting piece 19 and connects the expansion element to a conventional temperature sensor, not shown, for example a capsule or tube sensor.
  • the cylindrical connecting piece 19, with a fastening section 21 of reduced diameter, projects through an opening in a plate-shaped lever 22, which has a beveled edge for stiffening at two of its edges.
  • the expansion box is fixed to the lever 22 with a quick release part 23.
  • the lever is pivotable about an axis 24, which is mounted in the tilted edge of the lever and in two side walls 25 of the housing.
  • the lever On the side facing the free end of the lever, the lever has three adjacent holes 26 through which pressure pieces 27 made of insulating material protrude. They are offset at their lower end in the figures and in corresponding recesses
  • One spring tongue 28 each is received, which extend parallel to the lever 22 on the side facing the expansion element 18 and are riveted to the lever in the vicinity of the axis.
  • An adjusting screw 29 is screwed into the free end of each spring tongue 28, which is supported on the lever 22 and by means of which the relative position of the spring tongue with respect to the lever can be adjusted.
  • the total of three spring tongues parallel to one another are connected to one another at their riveted end, so that they protrude like a comb from the fastening end. They can also be stiffened over most of their length by an upward tilting of the edge, only the section lying shortly before their fastening end behaving like a hinge.
  • expansion member 18, the lever 22 with the spring tongues attached to it and the pressure pieces 27 form a coherent unit which is an actuating element 30 which is produced as a pre-adjusted separate unit and is fastened to the housing 12 by inserting the axle 24 can.
  • An insert 31 is suspended in the open side of the box-shaped housing 12, which is supported with a flange on the side walls or can be fixed by inward-facing sheet metal tabs of the housing.
  • the plastic insert 31 is relatively thin-walled and has a bottom 32 which closes the open side of the housing with the exception of three holes 34 for the pressure pieces 27 at a distance from the upper edge of the side walls 25.
  • the walls 35 running parallel to the side walls 25 and parallel thereto Intermediate walls 36 of the insert delimit three elongate, mutually parallel channels or chambers of approximately square cross section, which form three receptacles 37 for the switches of the temperature switching device.
  • Each snap switch 38 has a rigid snap switch carrier 41 which is screwed onto the snap switch base 40 and at one end of which a snap spring 42 is fixed. From there, the power supply to the snap spring also takes place via a connecting tab 43 which protrudes through a slot in the snap switch base, is bent at its inner end and supports the snap switch carrier 41.
  • a total of three connection tabs 43 are provided, which protrude beyond the essentially flat outer surface 44 of each snap switch base.
  • the snap switch carrier 41 has at its end remote from the attachment a bent support bearing 45 for a spring tongue 46, which is part of the snap spring 42 and is supported in the support bearing under buckling prestress.
  • the free end of the snap spring carries a contact 47 on each side, which has two mating contacts 48, 49 can work alternately in both switch positions.
  • the mating contacts are provided directly at the bent ends of the corresponding tabs 43 and fastened to the snap switch base by rivets.
  • the snap switch base together with the snap switch and the connections mounted thereon, forms an independent switching unit which can be actuated by a pressure piece 27 which acts on an actuation pressure point 50 and is to be fastened to the housing 12 by slots 51 at both ends thereof are provided, protrude through the projecting sheet metal tabs 52 of the housing and are held in place by twisting the notched upper section 53.
  • the snap switch base closes one of the receiving chambers 37 to the outside, so that the snap switch is protected in this chamber and shielded from the outside. Due to the fact that it is independent of each other functional and connectable snap switch, not all three snap switches provided need to be installed. 1 that only the two outer snap switches are provided in the present exemplary embodiment, while the middle receiving chamber 37 remains free. No pressure piece 27 is used for these. A two-lane controller is thus created.
  • the temperature switching device thus consists of three units, namely on the one hand the housing 12 with the actuating means 14, 16 and the insert 31, then from the actuating element 30 with the expansion element and the transmission means 22, 27, 28 and finally from several, but basically in the same way Snap-action switch bases 40 to be assembled with snap-action switches 38 and connections 43.
  • a large number of controller types can therefore be manufactured from a few individual parts of some basic modules according to specific customer requirements.
  • the switch assembly can be checked for functionality before the temperature switching device is assembled, and it is also possible to pre-adjust the assembly "actuating element 30".
  • FIG. 3 shows a temperature switching device 11a to illustrate the possible variations, which is used as a non-self-resetting temperature limiter.
  • the housing has an adjusting screw 16a, which acts on the expansion member 18 and the temperature limiter to a constant Temperature.
  • the lever 22a directly carries the pressure pieces 27 and has an adjusting screw 55 at its end, via which it acts on a two-armed, spring-loaded lever 56, which is mounted on the housing and the other end of which carries an actuating piece 57 which is designed to forcibly switch off the contact 47 of the snap spring when the lever pivots counterclockwise due to an extreme contraction of the expansion socket in the event of a capillary tube break or a leak in the hydraulic system (Direction of arrow 58).
  • a pressure actuating pin 59 which is cranked for reasons of space, is provided on the housing, the end of which brings the snap springs or the contact 47 back into the “on” position via a transmission bar 60 after the temperature limiter has responded.
  • the snap switch is designed in this case so that it does not turn on again automatically after a single switch-off even when the temperature drops, but only after the actuation button 59 has been pressed.
  • the switch module with the same structure of the snap switch base 40, differs only in that from the one shown in the figures 1 and 2 that he has corresponding recesses for the transmission bar 60 and that he lacks the third tab 43, since only a non-connected counter bearing is provided in its place. It can be seen here that three different modules are used which enable other combinations of temperature switching devices.
  • a single or multi-pole construction is also possible here, e.g. in the case of a single-pole controller, probably only the middle receptacle 37 would be occupied.
  • the housing can be formed next to one another for the arrangement of any number of snap switch bases.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermally Actuated Switches (AREA)
EP83110198A 1982-10-21 1983-10-13 Thermostat Expired EP0107152B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110198T ATE20404T1 (de) 1982-10-21 1983-10-13 Temperaturschaltgeraet.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3238955 1982-10-21
DE19823238955 DE3238955A1 (de) 1982-10-21 1982-10-21 Temperaturschaltgeraet
US06/547,787 US4565989A (en) 1982-10-21 1983-11-02 Temperature control apparatus

Publications (2)

Publication Number Publication Date
EP0107152A1 true EP0107152A1 (fr) 1984-05-02
EP0107152B1 EP0107152B1 (fr) 1986-06-11

Family

ID=25805248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110198A Expired EP0107152B1 (fr) 1982-10-21 1983-10-13 Thermostat

Country Status (6)

Country Link
US (1) US4565989A (fr)
EP (1) EP0107152B1 (fr)
JP (1) JPS5991623A (fr)
AU (1) AU566546B2 (fr)
CA (1) CA1203276A (fr)
DE (1) DE3238955A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177811A1 (fr) * 1984-09-28 1986-04-16 E.G.O. Elektro-Geräte Blanc u. Fischer Interrupteur de commande
FR2590075A1 (fr) * 1985-11-14 1987-05-15 Behr Thomson Dehnstoffregler Appareil electrique de commande
CN106092347A (zh) * 2014-05-30 2016-11-09 佛山市川东磁电股份有限公司 一种多重保护的温度传感器的制作方法

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003745A1 (de) * 1990-02-08 1991-08-14 Ego Elektro Blanc & Fischer Schaltgeraet
DE4425154C1 (de) * 1994-07-16 1995-10-19 Valeo Borg Instr Verw Gmbh Tastschalter mit lang gestrecktem Tastelement
DE19627969A1 (de) * 1996-07-11 1998-01-15 Ego Elektro Geraetebau Gmbh Temperaturschalter, insbesondere einstellbarer Temperaturregler
EP0954872B1 (fr) * 1997-01-21 2003-07-16 Invensys Appliance Controls New Zealand Limited Dispositif de bornes contacts pour bloc de commutation electrique integre
US5889259A (en) * 1997-05-22 1999-03-30 Hp Intellectual Corp. Toaster oven control assembly
IT237943Y1 (it) * 1997-10-01 2000-09-29 Prodigy Italiana Srl Termostato,ad elevata affidabilita',per la regolazione dellatemperatura in apparecchiature elettriche
DE19824871A1 (de) * 1998-06-04 1999-12-09 Ego Elektro Geraetebau Gmbh Temperaturschalter, insbesondere einstellbarer Temperaturregler
US6446367B1 (en) 1999-03-24 2002-09-10 Kubota Corporation Tractor-loader-backhoe
CN102479646A (zh) * 2010-11-29 2012-05-30 西安康瑞矿用设备有限公司 一种气体膨胀式温度控制器
CN103441035B (zh) * 2013-08-25 2015-07-15 何兆来 无源可调温度控制开关
CN108231484B (zh) * 2017-12-29 2020-04-24 合肥和旭继电科技有限公司 一种基于气压传动的继电器
CN107958814B (zh) * 2017-12-29 2019-09-06 合肥和旭继电科技有限公司 一种基于液压传动的集成继电器
CN108231483A (zh) * 2017-12-29 2018-06-29 合肥和旭继电科技有限公司 一种基于液压传动的三轮继电器
CN108172472B (zh) * 2017-12-29 2020-01-17 合肥和旭继电科技有限公司 一种传动平稳的大功率继电器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804525A (en) * 1955-01-27 1957-08-27 Gen Controls Co Combination control device
US3182149A (en) * 1961-10-25 1965-05-04 American Radiator & Standard Pressure-operated control having means for adjusting the actuating pressures of a plurality of control switches
FR1409569A (fr) * 1963-09-06 1965-08-27 Behr Thomson Dehnstoffregler Perfectionnements apportés aux dispositifs de commande en fonction de la température, notamment aux interrupteurs thermostatiques
US3245262A (en) * 1962-03-19 1966-04-12 Ranco Inc Control apparatus
FR2116113A5 (fr) * 1970-11-27 1972-07-07 Ego Elektro Blanc & Fischer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885513A (en) * 1954-07-01 1959-05-05 Gen Electric Control device for refrigeration apparatus
US2758177A (en) * 1955-03-09 1956-08-07 Dole Valve Co Multiaction electrical thermostat
US3050600A (en) * 1955-04-27 1962-08-21 Honeywell Regulator Co Simultaneous actuator for snap switches
US3235692A (en) * 1962-11-30 1966-02-15 Ametek Inc Condition responsive sequence switch
DE1440849A1 (de) * 1963-09-06 1969-10-09 Behr Thomson Dehnstoffregler Temperaturabhaengige Steuervorrichtung,insbesondere Temperaturschalter
US3858139A (en) * 1973-07-30 1974-12-31 Texas Instruments Inc Time-delay relay and method of assembling same
DE2619749C3 (de) * 1976-05-05 1979-02-22 Emil 3000 Hannover Spahn Thermostat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2804525A (en) * 1955-01-27 1957-08-27 Gen Controls Co Combination control device
US3182149A (en) * 1961-10-25 1965-05-04 American Radiator & Standard Pressure-operated control having means for adjusting the actuating pressures of a plurality of control switches
US3245262A (en) * 1962-03-19 1966-04-12 Ranco Inc Control apparatus
FR1409569A (fr) * 1963-09-06 1965-08-27 Behr Thomson Dehnstoffregler Perfectionnements apportés aux dispositifs de commande en fonction de la température, notamment aux interrupteurs thermostatiques
FR2116113A5 (fr) * 1970-11-27 1972-07-07 Ego Elektro Blanc & Fischer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177811A1 (fr) * 1984-09-28 1986-04-16 E.G.O. Elektro-Geräte Blanc u. Fischer Interrupteur de commande
FR2590075A1 (fr) * 1985-11-14 1987-05-15 Behr Thomson Dehnstoffregler Appareil electrique de commande
CN106092347A (zh) * 2014-05-30 2016-11-09 佛山市川东磁电股份有限公司 一种多重保护的温度传感器的制作方法
CN106092347B (zh) * 2014-05-30 2019-05-24 佛山市川东磁电股份有限公司 一种多重保护的温度传感器的制作方法

Also Published As

Publication number Publication date
US4565989A (en) 1986-01-21
JPS5991623A (ja) 1984-05-26
EP0107152B1 (fr) 1986-06-11
AU2045783A (en) 1984-05-03
AU566546B2 (en) 1987-10-22
DE3238955A1 (de) 1984-04-26
CA1203276A (fr) 1986-04-15

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