EP0042527A2 - Boîtier en deux parties pour résistance CTP en céramique - Google Patents

Boîtier en deux parties pour résistance CTP en céramique Download PDF

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Publication number
EP0042527A2
EP0042527A2 EP81104377A EP81104377A EP0042527A2 EP 0042527 A2 EP0042527 A2 EP 0042527A2 EP 81104377 A EP81104377 A EP 81104377A EP 81104377 A EP81104377 A EP 81104377A EP 0042527 A2 EP0042527 A2 EP 0042527A2
Authority
EP
European Patent Office
Prior art keywords
housing
ptc thermistor
housing part
recess
power supply
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Withdrawn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
EP81104377A
Other languages
German (de)
English (en)
Other versions
EP0042527A3 (fr
Inventor
Rudolf Jerney
Norbert Dr. Dipl.-Phys. Meixner
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0042527A2 publication Critical patent/EP0042527A2/fr
Publication of EP0042527A3 publication Critical patent/EP0042527A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances

Definitions

  • the invention relates to a housing made of two parts for an electrical ceramic PTC thermistor, of which at least one part in the assembled state of the housing presses a connecting electrode against the PTC thermistor, the housing parts cover a flat side of the PTC thermistor and are provided with projections which are used to hold each other Serve housing parts and are held in engagement by the action of the back pressure generated by a connecting electrode.
  • Such a housing is described in DE-AS 1 036 985.
  • An electrically semiconducting substance such as silicon carbide, is specified there as the resistance element.
  • Resistors of this type usually have a characteristic which largely depends on the voltage applied. Such resistors are used in telecommunications to dampen the voltages that occur when electrical circuits are interrupted. The shortest possible connection conductors are desired for this purpose.
  • This object is the subject of the invention on which the above publication is based.
  • the two housing parts are circular, so that the projections on them can be brought into engagement by rotating one housing part with respect to the other.
  • a holding device for PTC thermistors from a housing with a lid in which at least one power supply wire of the PTC thermistor is led out through openings in the lid and in the cup-shaped Ge housing with the cover made of plastic parts the PTC thermistor is contacted with two plate springs, there are two connector openings on the cylinder jacket of the housing for inserting the connecting wires of a so-called standard current feedthrough and a single-pole flat connector is inserted through a slot in the cover to the outside.
  • This known holding device is used in particular to accommodate PTC thermistors that are used when starting single-phase motors, for example for compressors of refrigerators.
  • the known housings or holding devices are not suitable for use in a device for vaporizing chemical disinfectant and / or insecticide substances by means of PTC thermistors because the PTC thermistor is not in thermal contact with the housing.
  • the housing is a rectangular shell, in one side wall of which there are openings for the passage of the power supply lines, and that a metal plate is closed, which contains, as it were, punching tabs encompassing the porcelain bowl.
  • a mica plate is inserted between it and the metal cover plate.
  • a resilient plate is inserted between the bottom of the housing and the other power supply, whereby the PTC thermistor and the first power supply are pressed against the mica plate.
  • This known housing which contains a ceramic PTC thermistor, requires steps for the assembly which, although they can be automated, are nevertheless cumbersome.
  • the punching tabs have to be molded onto the metal plate and bent around it when the device is assembled.
  • the centering of the mica plate serving as insulation requires increased attention, because at least the full voltage, for example 220V, is present at the power supply, so that touching this metal plate with incorrect insertion of the insulating plate can have adverse health effects for the user.
  • the assembly that is, the insertion of the first power supply, which is firmly connected to the power supply line, the insertion of the disk-shaped ceramic thermistor element and the insertion of the second power supply, which is firmly connected to the other power supply line, creates additional effort, because the necessary for this Manual work the person performing the work must strictly ensure correct assignment.
  • the present invention has for its object to provide a housing which is suitable for use in a device for vaporizing chemical disinfectant and / or insecticide substances by means of a PTC thermistor, the manufacture of which is simple, i.e. is possible to be carried out by injection molding as far as possible and this allows a simplified assembly with better utilization of the housing and ensures increased safety for the user.
  • the housing of the type specified at the outset is characterized in that, for use in a device for vaporizing chemical disinfectant and / or insecticide substances by means of a PTC thermistor, one of the housing parts has a recess in its base, which is in one plane with respect to length and width or diameter is adapted to the external dimensions of the PTC thermistor and contains recesses on opposite sides and the depth of the recess is dimensioned such that it corresponds to the thickness of the PTC thermistor, the spring-acting and prestressed power supply and Height of any spacers essentially corresponds to the fact that there are openings in the bottom of the recess in the area of the recesses for the passage of the leads to the power supply lines, and that this lower housing part also has raised walls on opposite sides, which are provided with inwardly directed latching lugs against which the other part of the housing is pressed, which at the same time contains the evaporation surface and is made of insulating material.
  • the evaporation surface is concave, because the chemical substance to be evaporated can also be in liquid form, which can then be introduced into the concave part of the evaporation surface.
  • the housing together with the ceramic PTC thermistor located and contacted therein can, for example, be inserted into a larger housing that is provided with a power supply in the form of a cable, or it can be inserted into a housing that is already provided with plug pins that can be inserted into a Socket can use.
  • care must be taken to ensure that the evaporation surface is in a horizontal position with liquid substance to be evaporated.
  • disinfectants and insecticide substances are placed in an absorbent cushion made of pressed porous material. This soaked evaporator pad is placed on the evaporation surface so that the desired process can take place.
  • At least one housing se t e il is made of insulating plastic, the temperatures at tem- p e r a is still resistant to 50 0 C and more above the Curie temperature (T C) are of the PTC material.
  • the upper housing part is usually a flat plate, it can consist of ceramic insulating material; this represents a preferred embodiment of the invention, because in this case such a plate can be produced in a simple manner by the production method for ceramic bodies.
  • the housing part 1 has a recess 3 in its base 2.
  • both the housing part 1 and the recess 3 are shown in a rectangular shape.
  • the housing has a circular shape in plan view and / or that the recess in the housing base is circular.
  • the length L and the width B of the recess 3 are essentially adapted to the external dimensions of the PTC thermistor 4.
  • recesses 5 and 6 are provided, in the area of which openings 10 and 11 serve for the passage of the supply lines 12 and 13 to the current leads 7 and 14 for the PTC thermistor.
  • the depth T of the recess 3 in the bottom 2 of the housing part 1 is dimensioned such that the recess 3 can accommodate the PTC thermistor 4, the current supply 7 which is under a certain prestress and any spacers 8 which may be present.
  • the power supply 7, possibly also the power supply 14, consists of spring metal known per se, wherein the spring action can preferably be brought about by tabs 35 protruding from the power supply 7.
  • the spacers 8 on the bottom 9 serve to keep the heat transfer from the PTC thermistor via the power supply 7 to the housing part 1 as small as possible.
  • the housing part 1 is provided with raised walls 15 and 16, which in the preferred embodiment according to FIGS. 1 to 3 are provided with latching lugs 17 and 18 which extend inwards, i.e. are directed to the interior of the housing part 1.
  • the current lead 14 is placed on the PTC thermistor 4, the lead 13 being passed through the opening 10 in the bottom 9 of the recess 3.
  • the other housing part 19 is guided between the locking lugs 17 and 18 of the raised walls 15 and 16 and snapped in using pressure, so that the combination of the power supply lines 7 and 14 and the PTC thermistor 4 receives the required pretension and the spring action of the power supply line 7- here the tabs 35 - the housing part 19 presses against the locking lugs 17 and 18.
  • the evaporation surface 20 of the housing part 19 is directed outwards in this way.
  • the raised walls 21 and 22 of the housing part 1 have in their upper region longitudinal grooves 23 and 24 which act as guide rails, into which correspondingly shaped longitudinal ribs 25 and 26 of the other housing part 27 engage. In this way, the recess in the housing part 1 is closed.
  • the housing part 27 is shown here with a concave recess 36.
  • the raised walls 28 and 29 have in their upper region outwardly directed ribs 30 and 31 which act as guide rails. In these ribs 30 and 31 engage inwardly open grooves 32 and 33 of the other housing part 34.
  • the lower housing part 1 is rectangular.
  • the structural design of the housing allows automatic assembly, which saves manufacturing costs. Furthermore, the simple shape of the housing part, in particular, ensures the use of injection molding technology, which saves further costs. Special attention is not required during assembly, because it does not matter whether the supply line 12 passes through the opening 11 and the supply line 13 through the opening 1-6 or vice versa, the supply line 13 through the opening 1j and the supply line 12 through the opening 10 go through. The insertion of an insulating plate between the power supply 14 and the housing parts 19, 27 or 34 is omitted because this housing part always consists of insulating material.
EP81104377A 1980-06-24 1981-06-05 Boítier en deux parties pour résistance CTP en céramique Withdrawn EP0042527A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803023644 DE3023644C2 (de) 1980-06-24 1980-06-24 Gehäuse für einen elektrischen keramischen Kaltleiter zum Verdampfen von chemischen Desinfektions- und/oder Insektizidsubstanzen
DE3023644 1980-06-24

Publications (2)

Publication Number Publication Date
EP0042527A2 true EP0042527A2 (fr) 1981-12-30
EP0042527A3 EP0042527A3 (fr) 1983-07-20

Family

ID=6105352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104377A Withdrawn EP0042527A3 (fr) 1980-06-24 1981-06-05 Boítier en deux parties pour résistance CTP en céramique

Country Status (3)

Country Link
EP (1) EP0042527A3 (fr)
DE (1) DE3023644C2 (fr)
DK (1) DK276881A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791272A (en) * 1986-10-24 1988-12-13 Windmere Corporation PTC hair roller
DE4292013T1 (de) * 1991-06-26 1994-06-09 Tdk Corp Vorrichtung für einen Thermistor mit positiver Kennlinie
EP0836856A2 (fr) * 1996-10-17 1998-04-22 Nikko Industries Co., Ltd. Corps de brûle-parfum et brûle-parfum
WO1998032286A1 (fr) * 1997-01-17 1998-07-23 Siemens Matsushita Components Gmbh & Co. Kg Composant electrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340819A1 (de) * 1993-11-29 1995-06-01 Gpa Ges Fuer Prozes Automation Verfahren zur Sanierung von mit Schädlingen befallenen (Bau-)Körpern und Vorrichtung zur Durchführung des Verfahrens

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1185082A (en) * 1967-03-28 1970-03-18 Matsushita Electric Ind Co Ltd Improvements in and relating to Electric Heating Apparatus
FR2175786A1 (fr) * 1972-03-14 1973-10-26 Betteo Anna
FR2256621A1 (fr) * 1973-12-26 1975-07-25 Texas Instruments Inc
FR2281695A1 (fr) * 1974-08-06 1976-03-05 Matsushita Electric Ind Co Ltd Element de chauffage a temperature constante
US3996447A (en) * 1974-11-29 1976-12-07 Texas Instruments Incorporated PTC resistance heater
FR2382192A1 (fr) * 1977-03-03 1978-09-29 Earth Chemical Co Procede et appareil de fumigation, par exemple d'insecticides

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB760029A (en) * 1952-12-04 1956-10-31 Walter Otto Vilhelm Broberg Improvements in or relating to electrical resistance units
DE2540029C3 (de) * 1975-09-09 1981-07-30 Siemens AG, 1000 Berlin und 8000 München Haltevorrichtung für Kaltleiter
DE2619242A1 (de) * 1976-04-30 1977-11-10 Murata Manufacturing Co Heizvorrichtung mit einem halbleiter-heizelement mit positivem temperaturkoeffizienten
DE2730855B2 (de) * 1977-07-08 1979-12-13 Globol-Werk Gmbh, 8858 Neuburg Vorrichtung zum Verdampfen von in Zellstoffplatten oder anderen festen Trägermaterialien eingelagerten Wirkstoffen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1185082A (en) * 1967-03-28 1970-03-18 Matsushita Electric Ind Co Ltd Improvements in and relating to Electric Heating Apparatus
FR2175786A1 (fr) * 1972-03-14 1973-10-26 Betteo Anna
FR2256621A1 (fr) * 1973-12-26 1975-07-25 Texas Instruments Inc
FR2281695A1 (fr) * 1974-08-06 1976-03-05 Matsushita Electric Ind Co Ltd Element de chauffage a temperature constante
US3996447A (en) * 1974-11-29 1976-12-07 Texas Instruments Incorporated PTC resistance heater
FR2382192A1 (fr) * 1977-03-03 1978-09-29 Earth Chemical Co Procede et appareil de fumigation, par exemple d'insecticides

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791272A (en) * 1986-10-24 1988-12-13 Windmere Corporation PTC hair roller
DE4292013T1 (de) * 1991-06-26 1994-06-09 Tdk Corp Vorrichtung für einen Thermistor mit positiver Kennlinie
DE4292013C2 (de) * 1991-06-26 2003-09-25 Tdk Corp Vorrichtung mit einem PTC-Widerstand und einer Heizvorrichtung
DE4292013B8 (de) * 1991-06-26 2005-06-30 Tdk Corp. Vorrichtung mit einem PTC-Widerstand und einer Heizvorrichtung
EP0836856A2 (fr) * 1996-10-17 1998-04-22 Nikko Industries Co., Ltd. Corps de brûle-parfum et brûle-parfum
EP0836856A3 (fr) * 1996-10-17 1999-02-03 Nikko Industries Co., Ltd. Corps de brûle-parfum et brûle-parfum
WO1998032286A1 (fr) * 1997-01-17 1998-07-23 Siemens Matsushita Components Gmbh & Co. Kg Composant electrique

Also Published As

Publication number Publication date
DE3023644C2 (de) 1983-06-30
DK276881A (da) 1981-12-25
EP0042527A3 (fr) 1983-07-20
DE3023644A1 (de) 1982-01-07

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Effective date: 19840405

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Inventor name: JERNEY, RUDOLF

Inventor name: MEIXNER, NORBERT, DR. DIPL.-PHYS.