ITVE20040020U1 - PTC RESISTOR. - Google Patents

PTC RESISTOR. Download PDF

Info

Publication number
ITVE20040020U1
ITVE20040020U1 ITVE20040020U ITVE20040020U1 IT VE20040020 U1 ITVE20040020 U1 IT VE20040020U1 IT VE20040020 U ITVE20040020 U IT VE20040020U IT VE20040020 U1 ITVE20040020 U1 IT VE20040020U1
Authority
IT
Italy
Prior art keywords
ptc
pad
resistor
heat sinks
interposed
Prior art date
Application number
Other languages
Italian (it)
Original Assignee
I R C A S P A Ind Resiste Nze
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 I R C A S P A Ind Resiste Nze filed Critical I R C A S P A Ind Resiste Nze
Priority to ITVE20040020 priority Critical patent/ITVE20040020U1/en
Publication of ITVE20040020U1 publication Critical patent/ITVE20040020U1/en
Priority to EP05021611A priority patent/EP1646055A1/en

Links

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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/024—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being hermetically sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/028—Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/08—Cooling, heating or ventilating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/02—Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Description

DESCRIZIONE DESCRIPTION

a corredo della domanda di brevetto per modello di utilità avente per titolo: "Resistore PT accompanying the patent application for a utility model entitled: "PT resistor

La presente innovazione concerne un resistore PTC. The present innovation concerns a PTC resistor.

Sono noti resistori PTC utilizzati in parecchie applicazioni domestiche fra le quali il riscaldamento dell'ambiente, l'evaporazione dell'acqua dovuta allo sbrinamento del frigorifero, ecc.. PTC resistors used in several domestic applications are known, including room heating, water evaporation due to refrigerator defrosting, etc.

Tali resistori si basano sulle tecnologie PTC (Positive Temperature Coefficent) ed essi non solo emanano calore ma una volta raggiunta la prefissata temperatura la mantengono senza richiedere l'impiego di un termostato ausiliario e senza pericolo di surriscaldamento. These resistors are based on PTC (Positive Temperature Coefficent) technologies and they not only give off heat but, once the preset temperature has been reached, they maintain it without requiring the use of an auxiliary thermostat and without the danger of overheating.

Il resistore è sostanzialmente costituito da un tubo in acciaio riempito di MgO e nei quale sono inseriti due dissipatori semicilindrici in alluminio affacciati fra i quali è interposta una pastiglia PTC e trattenute da due anelli in silicone. The resistor is substantially constituted by a steel tube filled with MgO and in which two facing semi-cylindrical aluminum heat sinks are inserted between which a PTC pad is interposed and held by two silicone rings.

Ai due dissipatori sono vincolate le estremità di due cavetti conduttori ricoperte da una guaina isolante che fuoriescono dal tubo attraverso una porzione discoidale di materiale sigillante. The ends of two conductor cables covered by an insulating sheath are bound to the two heat sinks and come out of the tube through a disc-shaped portion of sealing material.

Tali noti resistor! presentano tuttavia l'inconveniente di una complessità costruttiva in quanto è necessario formare un canale tortuoso per il passaggio dei cavetti conduttori attraverso la sigillatura e per consentire la fuoriuscita di gas formati dall'MgO e dall'acido borico in esso contenuto. A questo si aggiunge il fatto che la presenza di questi canali costituisce accesso dall'esterno con conseguente possibile perdita dell'isolamento. Such known resistors! however, they have the drawback of a constructional complexity since it is necessary to form a tortuous channel for the passage of the conductive cables through the seal and to allow the escape of gases formed by MgO and the boric acid contained therein. Added to this is the fact that the presence of these channels constitutes access from the outside with a consequent possible loss of insulation.

Secondo l'innovazione tale inconveniente viene eliminato con un resistore PTC comprendente due dissipatori metallici fra i quali è interposta una pastiglia PTC e provvisti di cavetti conduttori caratterizzato dal fatto che i dissipatori e la pastiglia fra loro interposta sono alloggiati all'interno di un corpo in resina termoconducibile. According to the innovation, this drawback is eliminated with a PTC resistor comprising two metal heat sinks between which a PTC pad is interposed and provided with conductor cables characterized by the fact that the heat sinks and the pad interposed between them are housed inside a body made of heat-conducting resin.

La presente innovazione viene qui di seguito ulteriormente chiarita con riferimento alla allegata tavola di disegni in cui: The present innovation is further clarified below with reference to the attached table of drawings in which:

la figura 1 mostra in sezione longitudinale un resistore secondo l'innovazione, la figura 2 lo mostra in sezione trasversale. Figure 1 shows a resistor according to the invention in longitudinal section, Figure 2 shows it in cross section.

Come si vede dalle figure il resistore PTC secondo l'innovazione comprende sostanzialmente una pastiglia PTC 2 interposta fra due dissipatori metallici semicilindrici in alluminio 4 ai quali sono vincolate le estremità di due cavetti conduttori 6. As can be seen from the figures, the PTC resistor according to the invention substantially comprises a PTC pad 2 interposed between two semi-cylindrical aluminum heat sinks 4 to which the ends of two conductor cables 6 are constrained.

I dissipatori e la pastiglia 2 sono inseriti all'interno di un corpo sostanzialmente cilindrico 8 ottenuto per iniezione di una resina termoconducibile, ad esempio epossidica, in uno stampo nel quale sono stati preventivamente inseriti i diffusori 4, con la pastiglia 2 interposta. The heat sinks and the pad 2 are inserted inside a substantially cylindrical body 8 obtained by injection of a heat-conducting resin, for example epoxy, into a mold in which the diffusers 4 have been previously inserted, with the pad 2 interposed.

Il corpo 6 è inserito ad un'estremità in un manicotto di raccordo 10. In questo modo la resina non solo avvolge esternamente le lamine 4 ma si dispone altresì nello spazio delimitato dalle superfici dei dissipatori affacciati tra loro e non occupato dalla pastiglia PTC, conferendo un elevato isolamento anche al passaggio dei cavetti conduttori 6. The body 6 is inserted at one end into a connecting sleeve 10. In this way the resin not only externally wraps the sheets 4 but also arranges itself in the space delimited by the surfaces of the heat sinks facing each other and not occupied by the PTC pad, giving a high level of insulation also for the passage of the conductor cables 6.

Claims (4)

R I V E N D I C A Z I O N I 1. Resistor e PTC comprendente due dissipatori metallici (4) fra i quali è interposta una pastiglia PTC (2) e provvisti di cavetti conduttori (6) caratterizzato dal fatto che i dissipatori (4) e la pastiglia (2) fra loro interposta sono alloggiati all'interno di un corpo (8) in resina termoconducibile. R I V E N D I C A Z I O N I 1. Resistor and PTC comprising two metal heat sinks (4) between which a PTC pad (2) is interposed and provided with conductor cables (6) characterized in that the heat sinks (4) and the pad (2) interposed between them are housed inside a thermally conductive resin body (8). 2. Resistore secondo la rivendicazione 1 caratterizzato dal fatto che il corpo ha conformazione cilindrica. 2. Resistor according to claim 1 characterized in that the body has a cylindrical shape. 3. Reistorè secondo la rivendicazione 1 caratterizzato dal fatto che la resina è una resina epossidica. 3. Reistor is according to claim 1 characterized in that the resin is an epoxy resin. 4. Resistore secondo la rivendicazione 1 caratterizzato dal fatto che il corpo (6) è inserito ad un'estremità in un manicotto di raccordo (10).4. Resistor according to claim 1 characterized in that the body (6) is inserted at one end into a connecting sleeve (10).
ITVE20040020 2004-10-07 2004-10-07 PTC RESISTOR. ITVE20040020U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITVE20040020 ITVE20040020U1 (en) 2004-10-07 2004-10-07 PTC RESISTOR.
EP05021611A EP1646055A1 (en) 2004-10-07 2005-10-04 PTC element emdedded in a heat conducting resin body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVE20040020 ITVE20040020U1 (en) 2004-10-07 2004-10-07 PTC RESISTOR.

Publications (1)

Publication Number Publication Date
ITVE20040020U1 true ITVE20040020U1 (en) 2005-01-07

Family

ID=35517205

Family Applications (1)

Application Number Title Priority Date Filing Date
ITVE20040020 ITVE20040020U1 (en) 2004-10-07 2004-10-07 PTC RESISTOR.

Country Status (2)

Country Link
EP (1) EP1646055A1 (en)
IT (1) ITVE20040020U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010006184A1 (en) 2010-01-29 2011-08-04 Eichenauer Heizelemente GmbH & Co. KG, 76870 An electric heater and method of manufacturing an electric heater
EP2397788A1 (en) * 2010-06-17 2011-12-21 Behr GmbH & Co. KG Heat exchanger and method for manufacturing a heat exchanger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7701813A (en) * 1977-02-21 1978-08-23 Philips Nv HEATING ELEMENT WITH A PTC RESISTANCE BODY.
DE3201367A1 (en) * 1982-01-19 1983-07-28 Türk & Hillinger GmbH, 7200 Tuttlingen Electrical resistance heater comprising PTC resistance elements
DE3730161A1 (en) * 1987-09-09 1989-03-30 Braun Ag Electrical heating element
JP2969899B2 (en) * 1990-10-16 1999-11-02 東洋紡績株式会社 Resin composition for sealing
JPH0974001A (en) * 1995-09-04 1997-03-18 Murata Mfg Co Ltd Thermistor

Also Published As

Publication number Publication date
EP1646055A1 (en) 2006-04-12

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