EP1253031A1 - Heating element with PTC components - Google Patents
Heating element with PTC components Download PDFInfo
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- EP1253031A1 EP1253031A1 EP02006424A EP02006424A EP1253031A1 EP 1253031 A1 EP1253031 A1 EP 1253031A1 EP 02006424 A EP02006424 A EP 02006424A EP 02006424 A EP02006424 A EP 02006424A EP 1253031 A1 EP1253031 A1 EP 1253031A1
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- Prior art keywords
- tolerance
- ptc
- ptc elements
- group
- elements
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- 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
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- 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
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- 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
Definitions
- the invention relates to a heating register with several individual PTC elements that electrically form a PTC element group with each other interconnected and selected in this way from a production of PTC elements are that the PTC element group with respect to an electrical parameter adheres to a specified group tolerance.
- Such PTC heating registers are used, for example, to build heating blocks used for electric heaters used in automotive heating systems for heating a vehicle interior come.
- the heating register consists of the individual PTC elements, the electrically e.g. are connected in parallel.
- DE 44 34 613 A1 is a strip-shaped PTC heating register for discloses this purpose, the individual PTC elements at a distance inserted side by side in openings of a sealing frame and by two sheets lying on both sides are held.
- the invention has the technical problem of providing a PTC heating register based on the type mentioned, in which the predetermined Group tolerance with regard to the relevant electrical parameter is observed, all places for PTC elements can be filled and as far as possible no functional PTC elements from production for the Must be discarded in the heating register.
- This heating register includes a PTC element group with a fixed number of PTC elements, i.e. all the places reserved for the same are also occupied. to Not only those PTC elements are used in the heating register approved, the individual tolerance of the electrical Characteristic within one of the given group tolerance Single tolerance range, but also PTC elements the production, the individual tolerance of which lies outside of this range.
- PTC elements are special for the heating register selected as a group that is electrically interconnected comply with the specified group tolerance. This can e.g.
- Fig. 1 shows a strip-shaped PTC heating register of known Structure as described in DE 44 34 613 A1 cited above.
- On Sealing frame 1 e.g. Made of soft plastic material with multiple openings 2 provided, in the example shown, these are three openings, one in corresponding number of individual PTC elements 3a, 3b, 3c introduced is.
- the PTC elements 3a, 3b, 3c are in it through a lower plate 4 and one removed in FIG. 1 for the purpose of recognizing the PTC elements 3a, 3b, 3c, upper sheet held.
- the sheets also serve that Heat transport and the electrical contacting of the PTC elements 3a, 3b, 3c.
- the three PTC elements 3a, 3b, 3c with each other electrically in parallel to a corresponding PTC element group connected has to adhere to a certain tolerance referred to as group tolerance.
- group tolerance a certain tolerance referred to as group tolerance.
- the frequency distribution has its maximum at the tolerance value 0%, ie the frequency maximum lies with those manufactured PTC elements whose electrical resistance or conductance has the target value specified for production.
- PTC elements with resistance or conductance values that deviate from the nominal value. Although their number decreases with increasing distance of the actual resistance or conductance from the target value, overall there is nevertheless a considerable number of PTC elements with their resistance or conductance, for example in the hatched area B L of FIG. 2 lie, ie lie below the target value by more than a lower limit value T U , or lie in the area B R shaded in FIG. 2, ie lie above the target value by more than an upper limit value T O.
- the lower and the upper limit value T U , T O are set so that this individual tolerance range B M corresponds to the predetermined group tolerance, ie when the individual tolerances of all three PTC elements 3a, 3b, 3c on lower limit value T U , this leads to an overall tolerance value at the lower limit of the specified group tolerance, and analogously, if the individual tolerances of the three PTC elements 3a, 3b, 3c are at the upper limit value T O , an overall tolerance value at the upper limit Limit of the specified group tolerance.
- all manufactured PTC elements can be used in that when selecting the three PTC elements 3a, 3b, 3c for the heating register, their individual tolerances are observed and a tolerance deviating in one direction for one of the PTC elements by selecting one or more of the other PTC elements with tolerance deviating in the other direction is compensated.
- any PTC element can first be picked out as the first PTC element 3a used from a complete set of manufactured PTC elements. If this comes from the mean single tolerance range B M of FIG. 2, there is practically complete freedom of choice for the second PTC element 3b to be used.
- the second PTC element 3b is preferably selected from the respective other of these two regions B L , B R.
- the third PTC element 3c is then suitably selected either from the middle area B M with a small tolerance or from one of the two areas B L , B R with a higher tolerance , so that overall the tolerance of the three selected and electrically interconnected PTC elements 3a, 3b, 3c is within the predetermined overall tolerance.
- each of several PTC heating registers of a heating block built with it the desired tolerance with regard to the electrical resistance or conductance also ensures that the electrical resistance or conductance of the Total heating blocks is within a predeterminable tolerance.
- heating registers with any build a different number of PTC elements If necessary can be used for easier selection of the PTC elements with suitable Tolerance value a pre-grouping of all manufactured and functional PTC elements in predefinable groups with different Tolerance intervals may be provided. If a manufacturing system Number of such groups and the associated tolerance intervals as well as the Number of PTC elements to be inserted in the heating register known this is able to select and insert the Make PTC elements largely automated.
- Heating registers complete freedom of choice from the entire set of manufactured PTC elements, all PTC elements can be seen can be used for the production of appropriate heating registers, too those with high tolerance, i.e. high deviation of the electrical Characteristic of the setpoint.
Abstract
Description
Die Erfindung bezieht sich auf ein Heizregister mit mehreren einzelnen PTC-Elementen, die elektrisch zu einer PTC-Elementgruppe miteinander verschaltet und derart aus einer Fertigung von PTC-Elementen ausgewählt sind, dass die PTC-Elementgruppe bezüglich einer elektrischen Kenngröße eine vorgegebene Gruppentoleranz einhält.The invention relates to a heating register with several individual PTC elements that electrically form a PTC element group with each other interconnected and selected in this way from a production of PTC elements are that the PTC element group with respect to an electrical parameter adheres to a specified group tolerance.
Derartige PTC-Heizregister werden beispielsweise zum Aufbau von Heizblöcken für elektrische Heizeinrichtungen verwendet, die in Kraftfahrzeug-Heizungsanlagen zur Beheizung eines Fahrzeuginnenraums zum Einsatz kommen. Das Heizregister besteht dazu aus den einzelnen PTC-Elementen, die elektrisch z.B. parallel geschaltet sind. In der Offenlegungsschrift DE 44 34 613 A1 ist ein streifenförmiges PTC-Heizregister für diesen Einsatzzweck offenbart, wobei die einzelnen PTC-Elemente mit Abstand nebeneinander in Öffnungen eines Dichtrahmens eingesetzt und von zwei beidseits anliegenden Blechen gehalten sind. Such PTC heating registers are used, for example, to build heating blocks used for electric heaters used in automotive heating systems for heating a vehicle interior come. The heating register consists of the individual PTC elements, the electrically e.g. are connected in parallel. In the published application DE 44 34 613 A1 is a strip-shaped PTC heating register for discloses this purpose, the individual PTC elements at a distance inserted side by side in openings of a sealing frame and by two sheets lying on both sides are held.
Beim Aufbau solcher PTC-Heizregister ist es wünschenswert, für eine vorgegebene elektrische Kenngröße, z.B. den elektrischen Widerstand oder den elektrischen Leitwert, eine vorgebbare Toleranz einzuhalten, um unerwünschte Fehlfunktionen zu vermeiden, wie einen zu hohen elektrischen Stromfluss wegen zu geringem Gesamtwiderstand der aus den elektrisch miteinander verschalteten PTC-Elementen bestehenden PTC-Elementgruppe. Um die Toleranz einzuhalten, könnte zwar die Maßnahme in Betracht gezogen werden, zum Aufbau der PTC-Elementgruppe aus einem Satz gefertigter PTC-Elemente nur solche mit entsprechend enger Toleranz auszuwählen. Außerhalb der entsprechend engen Einzeltoleranz liegende PTC-Elemente können dann aber nicht eingesetzt werden. Eine andere Möglichkeit bestünde darin, eine variable Anzahl von PTC-Elementen zur Bildung der PTC-Elementgruppe des Heizregisters zuzulassen, z.B. für ein erstes Heizregister weniger PTC-Elemente mit größerem elektrischem Einzelwiderstand und für ein zweites Heizregister mehr PTC-Elemente mit niedrigerem Widerstand derart, dass jeweils der Gesamtwiderstand oder Gesamtleitwert innerhalb der gewünschten Gruppentoleranz liegt. Damit wären dann aber nicht immer alle Plätze für PTC-Elemente im Heizregister besetzt.When building such PTC heating registers, it is desirable for a given one electrical parameter, e.g. the electrical resistance or the electrical conductivity, a predeterminable tolerance to avoid undesirable Avoid malfunctions, such as excessive electrical Current flow due to insufficient total resistance from the electrical interconnected PTC elements existing PTC element group. In order to comply with the tolerance, the measure could be considered be drawn to build the PTC element group from one Set of manufactured PTC elements only those with a correspondingly narrow tolerance select. Outside the correspondingly narrow individual tolerance PTC elements cannot then be used. Another Possibility would be a variable number of PTC elements to form the PTC element group of the heating register, e.g. For a first heating register fewer PTC elements with larger electrical Individual resistor and for a second heating register more PTC elements with lower resistance such that the total resistance or Overall conductance is within the desired group tolerance. In order to would then not always be all places for PTC elements in the heating register occupied.
Der Erfindung liegt als technisches Problem die Bereitstellung eines PTC-Heizregisters der eingangs genannten Art zugrunde, bei dem die vorgegebene Gruppentoleranz bezüglich der betreffenden elektrischen Kenngröße eingehalten wird, alle Plätze für PTC-Elemente besetzt werden können und möglichst keine funktionsfähigen PTC-Elemente aus der Fertigung für den Einsatz im Heizregister verworfen werden müssen.The invention has the technical problem of providing a PTC heating register based on the type mentioned, in which the predetermined Group tolerance with regard to the relevant electrical parameter is observed, all places for PTC elements can be filled and as far as possible no functional PTC elements from production for the Must be discarded in the heating register.
Die Erfindung löst dieses Problem durch die Bereitstellung eines Heizregisters mit den Merkmalen des Anspruchs 1. Dieses Heizregister beinhaltet eine PTC-Elementgruppe mit fest vorgegebener Anzahl von PTC-Elementen, d.h. alle für selbige vorgesehenen Plätze sind auch belegt. Zur Verwendung im Heizregister werden nicht nur diejenigen PTC-Elemente zugelassen, deren Einzeltoleranz bezüglich der betreffenden elektrischen Kenngröße innerhalb eines der vorgegebenen Gruppentoleranz entsprechenden Einzeltoleranzbereiches liegt, sondern auch PTC-Elemente aus der Fertigung, deren Einzeltoleranz außerhalb dieses Bereiches liegt. Die mehreren PTC-Elemente sind für das Heizregister in spezieller Weise so ausgewählt, dass sie als elektrisch miteinander verschaltete Gruppe insgesamt die vorgegebene Gruppentoleranz einhalten. Dies lässt sich z.B. dadurch realisieren, dass in Fällen, in denen ein ausgewähltes PTC-Element in der einen Richtung außerhalb des der Gruppentoleranz entsprechenden Einzeltoleranzbereiches liegt, ein oder mehrere andere PTC-Elemente aus der Fertigung gewählt werden, die in der anderen Richtung außerhalb dieses Einzeltoleranzbereiches liegen und dadurch bewirken, dass die Toleranz aller PTC-Elemente zusammen innerhalb der vorgegebenen Gruppentoleranz liegt. Dies ermöglicht, wenn gewünscht, die Nutzung praktisch aller gefertigten, funktionsfähigen PTC-Elemente zum Aufbau solcher Heizregister.The invention solves this problem by providing a heating register with the features of claim 1. This heating register includes a PTC element group with a fixed number of PTC elements, i.e. all the places reserved for the same are also occupied. to Not only those PTC elements are used in the heating register approved, the individual tolerance of the electrical Characteristic within one of the given group tolerance Single tolerance range, but also PTC elements the production, the individual tolerance of which lies outside of this range. The Several PTC elements are special for the heating register selected as a group that is electrically interconnected comply with the specified group tolerance. This can e.g. thereby realize that in cases where a selected PTC element in one direction outside the group tolerance Single tolerance range, one or more other PTC elements of manufacturing that are chosen in the other direction outside of this Single tolerance range and thereby cause the tolerance all PTC elements together within the specified group tolerance lies. This enables practical use if desired all manufactured, functional PTC elements for the construction of such heating registers.
In einer vorteilhaften Weiterbildung der Erfindung nach Anspruch 2 bildet der elektrische Widerstand oder Leitwert die für die Toleranzbetrachtung maßgebliche elektrische Kenngröße, und es wird eine Gruppentoleranz von ±15% oder weniger vorgegeben. Erfindungsgemäß können dennoch PTC-Elemente verwendet sein, deren Einzeltoleranz deutlich außerhalb dieser Gruppentoleranz liegt, indem PTC-Elemente mit in gegensätzlicher Richtung abweichender Toleranz in der PTC-Elementgruppe benutzt werden.In an advantageous development of the invention according to claim 2 forms the electrical resistance or conductance for tolerance analysis relevant electrical parameter, and it becomes a group tolerance of ± 15% or less. According to the invention can nevertheless PTC elements can be used whose individual tolerance is clearly outside this group tolerance lies by using PTC elements in opposite Direction of deviating tolerance can be used in the PTC element group.
Ein vorteilhaftes Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird nachfolgend beschrieben. Hierbei zeigen:
- Fig. 1
- eine Draufsicht auf ein streifenförmiges PTC-Heizregister mit abgenommenem oberem Blech und
- Fig. 2
- ein Diagramm einer typischen Häufigkeitsverteilung der Einzeltoleranz von PTC-Elementen aus der Fertigung zur Veranschaulichung der Auswahl geeigneter PTC-Elemente für das Heizregister von Fig. 1.
- Fig. 1
- a plan view of a strip-shaped PTC heating register with removed top plate and
- Fig. 2
- 1 shows a diagram of a typical frequency distribution of the individual tolerance of PTC elements from production, to illustrate the selection of suitable PTC elements for the heating register of FIG. 1.
Fig. 1 zeigt ein streifenförmiges PTC-Heizregister von an sich bekanntem
Aufbau, wie er in der oben zitierten DE 44 34 613 A1 beschrieben ist. Ein
Dichtrahmen 1 z.B. aus Weichkunststoffmaterial ist mit mehreren Öffnungen
2 versehen, im gezeigten Beispiel sind dies drei Öffnungen, in die eine
entsprechende Anzahl von einzelnen PTC-Elementen 3a, 3b, 3c eingebracht
ist. Die PTC-Elemente 3a, 3b, 3c sind darin durch ein unteres Blech
4 und ein in Fig. 1 zwecks Erkennbarkeit der PTC-Elemente 3a, 3b, 3c abgenommenes,
oberes Blech gehalten. Die Bleche dienen außerdem dem
Wärmetransport und der elektrischen Kontaktierung der PTC-Elemente 3a,
3b, 3c.Fig. 1 shows a strip-shaped PTC heating register of known
Structure as described in DE 44 34 613 A1 cited above. On
Sealing frame 1 e.g. Made of soft plastic material with multiple openings
2 provided, in the example shown, these are three openings, one in
corresponding number of
Im streifenförmigen PTC-Heizregister sind die drei PTC-Elemente 3a, 3b,
3c elektrisch parallel zu einer entsprechenden PTC-Elementgruppe miteinander
verschaltet. Dabei wird vorgegeben, dass der elektrische Widerstand
oder dazu gleichwertig der elektrische Leitwert der PTC-Elementgruppe
und damit des Heizregisters eine gewisse Toleranz einzuhalten hat, vorliegend
als Gruppentoleranz bezeichnet. Beispielsweise kann als Gruppentoleranz
±10% vorgegeben sein. Andererseits hat jedes einzelne PTC-Element
3a, 3b, 3c bezüglich der gewählten elektrischen Kenngröße, d.h.
hier bezüglich des elektrischen Widerstands oder Leitwerts, eine bestimmte
Einzeltoleranz. Diese streut in einer Massenfertigung von PTC-Elementen
nach einer Häufigkeitsverteilung, wie sie für einen typischen
Beispielsfall qualitativ im Diagramm von Fig. 2 wiedergegeben ist.In the strip-shaped PTC heating register, the three
Wie aus Fig. 2 ersichtlich, hat die Häufigkeitsverteilung ihr Maximum beim Toleranzwert 0%, d.h. das Häufigkeitsmaximum liegt bei denjenigen gefertigten PTC-Elementen, deren elektrischer Widerstand bzw. Leitwert den für die Fertigung vorgegebenen Sollwert hat. Daneben gibt es jedoch PTC-Elemente mit vom Sollwert abweichendem Widerstands- bzw. Leitwert. Zwar nimmt deren Anzahl mit zunehmendem Abstand des tatsächlichen Widerstands- bzw. Leitwerts vom Sollwert ab, insgesamt gibt es aber doch eine beträchtliche Anzahl von PTC-Elementen, die mit ihrem Widerstands- bzw. Leitwert z.B. im linken schraffierten Bereich BL von Fig. 2 liegen, d.h. um mehr als ein unterer Grenzwert TU unter dem Sollwert liegen, oder im in Fig. 2 rechten schraffierten Bereich BR liegen, d.h. um mehr als ein oberer Grenzwert TO über dem Sollwert liegen.As can be seen from FIG. 2, the frequency distribution has its maximum at the tolerance value 0%, ie the frequency maximum lies with those manufactured PTC elements whose electrical resistance or conductance has the target value specified for production. In addition, however, there are PTC elements with resistance or conductance values that deviate from the nominal value. Although their number decreases with increasing distance of the actual resistance or conductance from the target value, overall there is nevertheless a considerable number of PTC elements with their resistance or conductance, for example in the hatched area B L of FIG. 2 lie, ie lie below the target value by more than a lower limit value T U , or lie in the area B R shaded in FIG. 2, ie lie above the target value by more than an upper limit value T O.
Würden für den Aufbau des Heizregisters von Fig. 1 jeweils nur PTC-Elemente
aus der Fertigung ausgewählt, deren Widerstand bzw. Leitwert
im in Fig. 2 mittleren, unschraffierten Bereich BM mit Toleranzen zwischen
dem unteren Grenzwert TU und dem oberen Grenzwert To liegt, könnte
damit zwar die geforderte Gruppentoleranz eingehalten werden. Die Beschränkung
auf eine Nutzung nur solcher PTC-Elemente aus diesem Einzeltoleranzbereich
BM hätte aber den Nachteil, dass zum Aufbau des Heizregisters
eine große Anzahl der z.B. in Serienfertigung hergestellten PTC-Elemente
nicht genutzt würde, d.h. alle PTC-Elemente aus den schraffierten
Bereichen BL und BR von Fig. 2. Dabei sind der untere und der obere
Grenzwert TU, TO so festgelegt, dass dieser Einzeltoleranzbereich BM der
vorgegebenen Gruppentoleranz entspricht, d.h. wenn die Einzeltoleranzen
aller drei PTC-Elemente 3a, 3b, 3c am unteren Grenzwert TU liegen, führt
dies zu einem Gesamttoleranzwert an der unteren Grenze der vorgegebenen
Gruppentoleranz, und analog ergibt sich dann, wenn die Einzeltoleranzen
der drei PTC-Elemente 3a, 3b, 3c am oberen Grenzwert TO liegen,
ein Gesamttoleranzwert an der oberen Grenze der vorgegebenen Gruppentoleranz.
Wie dieser so zu ermittelnde Einzeltoleranzbereich BM = [TU,
TO] in seiner Ausdehnung um den Sollwert mit Toleranz 0% jeweils aussieht,
hängt ersichtlich von der Anzahl an PTC-Elementen in der PTC-Elementgruppe
und davon ab, durch welche mathematische Beziehung
sich der Gesamtwert der gewählten elektrischen Kenngröße für die PTC-Elementgruppe
aus den Einzelwerten der einzelnen PTC-Elemente ergibt,
wie sich dies für den Fachmann versteht.If only the PTC elements from production were selected for the construction of the heating register of FIG. 1, their resistance or conductance lies in the unshaded area B M in FIG. 2 with tolerances between the lower limit value T U and the upper limit value To , the required group tolerance could be adhered to. However, the restriction to the use of only such PTC elements from this individual tolerance range B M would have the disadvantage that a large number of the PTC elements manufactured in series production, for example, would not be used to build up the heating register, ie all PTC elements from the hatched areas B L and B R of Fig. 2. Here, the lower and the upper limit value T U , T O are set so that this individual tolerance range B M corresponds to the predetermined group tolerance, ie when the individual tolerances of all three
Erfindungsgemäß werden hingegen alle gefertigten PTC-Elemente nutzbar,
indem bei der Auswahl der drei PTC-Elemente 3a, 3b, 3c für das Heizregister
deren Einzeltoleranzen beachtet und eine in der einen Richtung
abweichende Toleranz für eines der PTC-Elemente durch Wahl eines oder
mehrerer der anderen PTC-Elemente mit in der anderen Richtung abweichender
Toleranz kompensiert wird. So kann z.B. zum Füllen der drei Öffnungen
2 des Heizregisters von Fig. 1 zunächst ein beliebiges PTC-Element
als das erste eingesetzte PTC-Element 3a aus einem gesamten
Satz gefertigter PTC-Elemente herausgegriffen werden. Wenn dieses aus
dem mittleren Einzeltoleranzbereich BM von Fig. 2 stammt, besteht auch
für das zweite einzusetzende PTC-Element 3b praktisch völlige Wahlfreiheit.
Stammt das erste PTC-Element 3a hingegen aus einem der Bereiche
BL und BR mit größerer Toleranzabweichung, wird das zweite PTC-Element
3b vorzugsweise aus dem jeweils anderen dieser beiden Bereiche
BL, BR gewählt. Je nach dem, welche Gesamttoleranz aus den beiden
schon gewählten PTC-Elementen 3a, 3b resultiert, wird dann das dritte
PTC-Element 3c passend entweder aus dem mittleren Bereich BM kleiner
Toleranz oder einem der beiden Bereiche BL, BR höherer Toleranz ausgewählt,
so dass insgesamt die Toleranz der drei ausgewählten und elektrisch
miteinander verschalteten PTC-Elemente 3a, 3b, 3c innerhalb der
vorgegebenen Gesamttoleranz liegt.According to the invention, on the other hand, all manufactured PTC elements can be used in that when selecting the three
Indem auf diese Weise sichergestellt ist, dass jedes von mehreren PTC-Heizregistern eines damit aufgebauten Heizblocks die gewünschte Toleranz bezüglich des elektrischen Widerstands bzw. Leitwertes einhält, ist auch gewährleistet, dass der elektrische Widerstand bzw. Leitwert des Heizblocks insgesamt innerhalb einer vorgebbaren Toleranz liegt. By ensuring in this way that each of several PTC heating registers of a heating block built with it the desired tolerance with regard to the electrical resistance or conductance also ensures that the electrical resistance or conductance of the Total heating blocks is within a predeterminable tolerance.
Es versteht sich, dass sich in dieser Weise auch Heizregister mit einer beliebigen anderen Anzahl von PTC-Elementen aufbauen lassen. Bei Bedarf kann zum einfacheren Auswählen der PTC-Elemente mit jeweils passendem Toleranzwert eine Vorab-Eingruppierung aller gefertigten und funktionsfähigen PTC-Elemente in vorgebbare Gruppen mit unterschiedlichen Toleranzintervallen vorgesehen sein. Wenn einem Fertigungssystem die Anzahl solcher Gruppen und die zugehörigen Toleranzintervalle sowie die Anzahl an in das Heizregister einzusetzenden PTC-Elementen bekannt gemacht wird, ist dieses in der Lage, das Auswählen und Einsetzen der PTC-Elemente weitestgehend automatisiert vorzunehmen.It goes without saying that in this way heating registers with any build a different number of PTC elements. If necessary can be used for easier selection of the PTC elements with suitable Tolerance value a pre-grouping of all manufactured and functional PTC elements in predefinable groups with different Tolerance intervals may be provided. If a manufacturing system Number of such groups and the associated tolerance intervals as well as the Number of PTC elements to be inserted in the heating register known this is able to select and insert the Make PTC elements largely automated.
Da mindestens für das jeweils erste einzusetzende PTC-Element eines Heizregisters völlige Wahlfreiheit aus dem gesamten Satz von gefertigten PTC-Elementen besteht, können ersichtlich alle gefertigten PTC-Elemente für die Fertigung von entsprechenden Heizregistern genutzt werden, auch solche mit hohem Toleranzwert, d.h. hoher Abweichung der elektrischen Kenngröße vom Sollwert. Zwar sind solche stark abweichenden PTC-Elemente nicht mehrheitlich in den Heizregistern verwendbar, jedoch korrespondiert dies problemlos mit der Tatsache, dass in der Fertigung prozentual nur wenige solche PTC-Elemente anfallen, siehe die Häufigkeitsverteilung von Fig. 2.Since at least one for the first PTC element to be used Heating registers complete freedom of choice from the entire set of manufactured PTC elements, all PTC elements can be seen can be used for the production of appropriate heating registers, too those with high tolerance, i.e. high deviation of the electrical Characteristic of the setpoint. Such are very different PTC elements not usable in the majority of the heating registers, but corresponds this easily with the fact that in manufacturing percentage only a few such PTC elements occur, see the frequency distribution of Fig. 2.
Das erfindungsgemäße Verwenden praktisch aller funktionstüchtigen PTC-Elemente aus einer Serienfertigung ist an den hergestellten PTC-Heizregistern daran erkennbar, dass stets alle Plätze für PTC-Elemente belegt sind und dabei auch PTC-Elemente verwendet sind, deren Einzeltoleranz außerhalb des der vorgegebenen Gruppentoleranz entsprechenden Einzeltoleranzbereiches BM liegt.The use according to the invention of practically all functional PTC elements from a series production can be recognized from the PTC heating registers produced by the fact that all spaces for PTC elements are always occupied and PTC elements are also used, the individual tolerance of which outside the individual tolerance range corresponding to the predetermined group tolerance B M lies.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10119928 | 2001-04-23 | ||
| DE10119928A DE10119928A1 (en) | 2001-04-23 | 2001-04-23 | Heating register with PTC elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1253031A1 true EP1253031A1 (en) | 2002-10-30 |
| EP1253031B1 EP1253031B1 (en) | 2003-09-03 |
Family
ID=7682452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02006424A Revoked EP1253031B1 (en) | 2001-04-23 | 2002-03-22 | Heating element with PTC components |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1253031B1 (en) |
| AT (1) | ATE248723T1 (en) |
| DE (2) | DE10119928A1 (en) |
| ES (1) | ES2204877T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1790916A1 (en) * | 2005-11-23 | 2007-05-30 | Catem GmbH & Co.KG | Electric heating device with tolerance PTC heating element |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0893937A2 (en) * | 1997-07-25 | 1999-01-27 | Behr GmbH & Co. | Electric heating apparatus, particularly for vehicle |
| EP1026020A1 (en) * | 1999-02-08 | 2000-08-09 | Valeo Klimasysteme GmbH | Electric heating device for a vehicle |
| DE19911547A1 (en) * | 1999-03-16 | 2000-09-21 | Behr Gmbh & Co | Electric heater for motor vehicle has heating block clamped in frame by at least one spring element that forms integral part of heating block and is arranged between two heating elements |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3029446A1 (en) * | 1980-08-02 | 1982-03-11 | Robert Bosch Gmbh, 7000 Stuttgart | THICK LAYER ARRANGEMENT |
| DE3540830A1 (en) * | 1984-11-16 | 1986-05-22 | Joh. Vaillant Gmbh U. Co, 5630 Remscheid | Method for the step-by-step adjustment of an electrical power present at a resistor connected to voltage via a switch, and circuit arrangement for carrying out the method |
| DE4434613A1 (en) * | 1994-09-28 | 1996-04-04 | Behr Gmbh & Co | Electric heating device, in particular for a motor vehicle |
-
2001
- 2001-04-23 DE DE10119928A patent/DE10119928A1/en not_active Withdrawn
-
2002
- 2002-03-22 ES ES02006424T patent/ES2204877T3/en not_active Expired - Lifetime
- 2002-03-22 DE DE50200039T patent/DE50200039D1/en not_active Revoked
- 2002-03-22 AT AT02006424T patent/ATE248723T1/en not_active IP Right Cessation
- 2002-03-22 EP EP02006424A patent/EP1253031B1/en not_active Revoked
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0893937A2 (en) * | 1997-07-25 | 1999-01-27 | Behr GmbH & Co. | Electric heating apparatus, particularly for vehicle |
| EP1026020A1 (en) * | 1999-02-08 | 2000-08-09 | Valeo Klimasysteme GmbH | Electric heating device for a vehicle |
| DE19911547A1 (en) * | 1999-03-16 | 2000-09-21 | Behr Gmbh & Co | Electric heater for motor vehicle has heating block clamped in frame by at least one spring element that forms integral part of heating block and is arranged between two heating elements |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1790916A1 (en) * | 2005-11-23 | 2007-05-30 | Catem GmbH & Co.KG | Electric heating device with tolerance PTC heating element |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1253031B1 (en) | 2003-09-03 |
| ATE248723T1 (en) | 2003-09-15 |
| DE10119928A1 (en) | 2002-10-31 |
| ES2204877T3 (en) | 2004-05-01 |
| DE50200039D1 (en) | 2003-10-09 |
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