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(11) | EP 1 054 313 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
Temperature sensor Temperaturfühler Capteur de température |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
[0001] The present invention relates to a PTC heating register, as described in the preamble of Claim 1.
[0002] It is known, see e.g. US-A-4963716, to use a technique for detecting the air exit temperature of a heat exchanger or the air entry temperature of a PTC heating register with at least one temperature sensor, which is arranged in the space between the heat exchanger and the PTC heating register.
[0003] The intervening space between the heat exchanger and the PTC heating register should be kept as small as possible, in order to achieve the smallest possible overall structural dimensions for the arrangement. This requirement for a small intervening space carries a disadvantage in that, in these circumstances, the temperature sensor has to be positioned very close to the PTC heating elements or strips. In the light of the fact that the temperature of the PTC heating register can reach as much as 160°C, it is therefore unavoidable that the radiant heat also influences the temperature sensor, such that the air temperature measurement from the sensor can be distorted to an undesirable extent. What is more, it has to be seen as a disadvantage that, with the known arrangement, additional openings and fastening devices have to be provided for the sensor in a housing of the heating/air conditioning installation, which represents a not inconsiderable additional manufacturing outlay.
[0004] The object of the present invention is therefore to provide a PTC heating register, which makes it possible, without distortion, to detect the air exit temperature from a heat exchanger or the air entry temperature of a PTC heating register with at least one temperature sensor, and which can be produced and used in a simple and economical way.
[0005] This object is achieved via the characterising features of the independent Claim 1, expedient embodiments being described via the features of the dependent claims.
[0006] A PTC heating register is provided with at least one strip as well as a frame, in which, according to the provisions of the invention, at least one temperature sensor which detects the air entry temperature at the PTC heating register or the air exit temperature at the heat exchanger, is integrated into the PTC heating register in a gap between the strip and the frame. The connector for the temperature sensor in this case is arranged at the same level as the connector of the PTC heating register, such that integration is made possible.
[0007] The striking advantage of the arrangement according to the provisions of the present invention can be seen in that distortion of the measurement value detected with the help of the temperature sensor due to radiant heat from the PTC heating register can be avoided, in that the temperature sensor takes up a specific position in the air stream, in that no undesirable piercings and/or fastenings are required on the heating/air conditioning installation, because the sensor, together with its housing, is fastened to the frame of the PTC heating register, and in that in the case of two or more temperature sensors, by appropriate arrangement of said sensors, the leads required can be laid in the frame of the PTC heating register, which markedly reduces the manufacturing cost as compared with traditional arrangements.
[0008] With the PTC heating register according to the provisions of the present invention, combined connectors for supplying the PTC heating register as well as for the signal from the temperature sensors 12 can be provided, in which case screening can be provided between the connector region for the temperature sensors and that for the supply in order to avoid electromagnetic interference effects.
[0009] What is more, electronic control of the PTC heating register can be provided integrated into the register, this preferably being provided in the area of the electrical connections.
[0010] Finally, a combined connector for the low-power control currents and the power electronics for driving the radiator elements can be provided, the electronic control installation for the radiator elements preferably containing low-power electronics and/or a microcontroller. The fact that the low currents are in the same connector as the power electronics poses no problem as regards electromagnetic compatibility. In fact, the wiring harness can be routed jointly over a certain distance. The microcontroller locally processes information from the temperature sensors. The processing may serve for preparation for transmission on a network, correcting of information or even more complicated tasks, such as the correcting of the electrical control of the register. As regards its environment, the register module behaves as an autonomous element, which is self-regulating, so as to deliver a particular thermal power.
[0011] Further properties, features and advantages of the present invention emerge from the following description of a preferred embodiment, in connection with the attached drawings, in which:
Fig. 1 shows the top view of an embodiment of a PTC heating register;
Fig. 2 shows the side view of the embodiment according to Fig. 1;
Fig. 3 shows an enlarged view of the integrated temperature sensor of the embodiment according to Fig. 1;
Fig. 4 shows an enlarged partial top view of the embodiment according to Fig. 1; and
Fig. 5 shows an enlarged partial side view of the embodiment according to Fig. 1.
[0012] An embodiment of a PTC heating register with an integrated air temperature sensor is depicted in Fig. 1. A frame 2 can be recognised, in which radiator elements, here in the shape of metal strips 4, are accommodated between which PTC elements 6 are arranged, which extend parallel to the radiator elements 4. On the right-hand side of the frame 2 can be seen the connector housing 8, which is configured and arranged in such a way that a lower region on the frame is left free, that is to say not covered by the connector housing 8. In this free region the frame 2 exhibits an opening 10, through which a temperature sensor 12, which detects the air temperature and is built into a sensor housing 18, can be inserted and arranged in a gap 14 between the end of the strips 4 and the frame 2. Besides the embodiment shown in Fig. 1, a number of temperature sensors can be provided in the gaps between the ends of the strips 4 and the frame 2; in the embodiment depicted, for example, in the region 16 opposite the temperature sensor 12. For a heating/air-conditioning installation with water-side temperature adjustment right and left, the temperature detection is advantageously by a second temperature sensor in the part of the frame located opposite; the lead is advantageously led in the long side of the frame 2 to the first temperature sensor 12 onto a combined connector 22.
[0013] Fig. 2 shows a side view of the embodiment according to Fig. 1, similar elements being designated with the same reference number. The opening 10 in the frame 2 should particularly be noted; through it the temperature sensor 12 can be inserted into the gap 14 between the end of the strips 4 and the frame 2.
[0014] Finally, the temperature sensor 12, together with the housing 18 surrounding it, is depicted in an enlarged view in Fig. 3. The temperature sensor 12 is surrounded by a single- or multi-layer radiant heat and convection shielding 20, which serves the purpose of reducing or even completely eliminating even the slightest remaining heating. The temperature sensor 12 is in this case provided with a preferably annular or rectangular radiant heat and convection shielding 20. On the side of the sensor housing 18 lying opposite the sensor 12 itself a connector 22 is provided on the housing, with which the temperature sensor 12 can be connected to a corresponding measurement device (not depicted) or control electronics. The sensor is fixed in the frame 2, on the connector side of the PTC heating register, preferably by means of a plug connection in such a way that, for servicing, it can easily be fitted and removed. Furthermore it is advantageous for the temperature sensor 12, as depicted, to be placed as close as possible to the air inlet.
[0015] Fig. 4 shows a partial top view of the embodiment of the PTC heating register according to Fig. 1. The regions of the frame 2, of the strips 4 as well as of the PTC elements 6 are depicted in which the temperature sensor 12 together with its housing 18, the radiant heat and convection shielding 20 as well as the connector 22 is arranged. In Fig. 4 can clearly be seen, in particular, the gap 14 formed between the end of the strips 4 and the frame 2, which makes use of the arrangement according to the provisions of the present invention, so as to arrange the temperature sensor 12 in a suitable position requiring a particularly small space.
1. PTC heating register with a frame (2), at least one radiator element (4) arranged
in the frame, at least one PTC element (6) and at least one temperature sensor (12)
for detecting the air entry temperature at the PTC heating register or the air exit
temperature at the heat exchanger, characterised in that the temperature sensor (12) is arranged in a gap (14) between the end of the at least
one radiator element (4) and the frame (2) of the PTC heating register.
2. PTC heating register according to Claim 1, characterised in that the temperature sensor (12) is accommodated in a housing (18) with a connector (22)
directed outwards beyond the frame (2).
3. PTC heating register according to Claim 2, characterised in that the connector (22) is arranged at the same level as the connectors (8) of the PTC
heating register.
4. PTC heating register according to Claim 2 or 3, characterised in that the housing (18) is constructed so as to be releasable from the frame (2).
5. PTC heating register according to one of the preceding claims, characterised in that the leads required for several temperature sensors (12) are laid in the frame (2)
of the PTC heating register.
6. PTC heating register according to one of the preceding claims, characterised in that the radiator elements are constructed in the form of metal strips (4).
7. PTC heating register according to one of the preceding claims, characterised in that the PTC-elements (6) are arranged between the radiator elements (4).
8. PTC heating register according to one of the preceding claims, characterised in that the frame (2) has an opening (10), through which the temperature sensor (12) is inserted
and arranged.
9. PTC heating register according to one of the preceding claims, characterised in that the temperature sensor (12) is surrounded by radiant heat and convection shielding
(20).
10. PTC heating register according to Claim 9, characterised in that the radiant heat and convection shielding (20) is a single layer.
11. PTC heating register according to Claim 9, characterised in that the radiant heat and convection shielding (20) is in several layers.
12. PTC heating register according to one of Claims 9 to 11, characterised in that the radiant heat and convection shielding (20) is annular.
13. PTC heating register according to one of Claims 9 to 11, characterised in that the radiant heat and convection shielding (20) is rectangular.
14. PTC heating register according to one of the preceding claims, characterised in that combined connectors are provided for supplying the PTC heating register as well as
for the signal from the temperature sensors (12).
15. PTC heating register according to Claim 14, characterised in that screening is provided between the connector region for the temperature sensors and
that for the power supply, in order to avoid electromagnetic interference effects.
16. PTC heating register according to one of the preceding claims, characterised in that integrated electronic control of the PTC heating register is provided.
17. PTC heating register according to Claim 16, characterised in that the electronic control is provided in the region of the electrical connections.
18. PTC heating register according to one of Claims 16 and 17, characterised in that a combined connector is provided for the low-power control currents and the power
electronics for controlling the radiator elements.
19. PTC heating register according to Claim 18, characterised in that the electronic control unit for the radiator elements contains low-power electronics
and/or a microcontroller.
1. PTC-Heizregister mit einem Rahmen (2), mindestens einem in dem Rahmen angeordneten
Radiatorelement (4), mindestens einem PTC-Element (6) und mindestens einem Temperatorsensor
(12) zur Erfassung der Luft-Eingangstemperatur am PTC-Heizregister bzw. der Luft-Austrittstemperatur
am Wärmetauscher, dadurch gekennzeichnet, daß der Temperatursensor (12) in einer Lücke (14) zwischen dem Ende des mindestens einen
Radiatorelements (4) und dem Rahmen (2) des PTC-Heizregisters angeordnet ist.
2. PTC-Heizregister nach Anspruch 1, dadurch gekennzeichnet, daß der Temperatursensor (12) in einem Gehäuse (18) mit einem nach außen über den Rahmen
(2) hinausweisenden Verbinder (22) aufgenommen ist.
3. PTC-Heizregister nach Anspruch 2, dadurch gekennzeichnet, daß der Verbinder (22) in der gleichen Ebene wie die Verbinder (8) des PTC-Heizregisters
angeordnet ist.
4. PTC-Heizregister nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Gehäuse (18) so ausgeführt ist, daß es von dem Rahmen (2) lösbar ist.
5. PTC-Heizregister nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die erforderlichen Leitungen für mehrere Temperatursensoren (12) im Rahmen (2) des
PTC-Heizregisters verlegt sind.
6. PTC-Heizregister nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Radiatorelemente in der Form von Metall-Lamellen (4) ausgeführt sind.
7. PTC-Heizregister nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die PTC-Elemente (6) zwischen den Radiatorelementen (4) angeordnet sind.
8. PTC-Heizregister nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Rahmen (2) eine Öffnung (10) aufweist, durch die der Temperatursensor (12) eingeführt
und angeordnet wird.
9. PTC-Heizregister nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Temperatursensor (12) von einem Strahlungswärme- und Konvektionsschutz (20) umgeben
ist.
10. PTC-Heizregister nach Anspruch 9, dadurch gekennzeichnet, daß der Strahlungswärme- und Konvektionsschutz (20) einlagig ist.
11. PTC-Heizregister nach Anspruch 9, dadurch gekennzeichnet, daß der Strahlungswärme- und Konvektionsschutz (20) mehrlagig ist.
12. PTC-Heizregister nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß der Strahlungswärme- und Konvektionsschutz (20) ringförmig ist.
13. PTC-Heizregister nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß der Strahlungswärme- und Konvektionsschutz (20) rechteckig ist.
14. PTC-Heizregister nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß kombinierte Verbinder sowohl zur Versorgung des PTC-Heizregisters als auch für das
Signal von den Temperatursensoren (12) vorgesehen sind.
15. PTC-Heizregister nach Anspruch 14, dadurch gekennzeichnet, daß zwischen dem Verbinderbereich für die Temperatursensoren und dem für die Stromversorgung
eine Abschirmung vorgesehen ist, um elektromagnetische Störwirkungen zu vermeiden.
16. PTC-Heizregister nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine integrierte elektronische Steuerung für das PTC-Heizregister vorgesehen ist.
17. PTC-Heizregister nach Anspruch 16, dadurch gekennzeichnet, daß die elektronische Steuerung im Bereich der elektrischen Verbindungen vorgesehen ist.
18. PTC-Heizregister nach einem der Ansprüche 16 und 17, dadurch gekennzeichnet, daß ein kombinierter Verbinder für die schwachen Steuerströme und die Leistungselektronik
zur Steuerung der Radiatorelemente vorgesehen ist.
19. PTC-Heizregister nach Anspruch 18, dadurch gekennzeichnet, daß die elektronische Steuereinheit für die Radiatorelemente Niederleistungselektronik
und/oder eine Mikrosteuerung enthält.
1. Registre de chauffage à CTP comprenant un cadre (2), au moins un élément de radiateur
(4) disposé dans le cadre, au moins un élément à CTP (6) et au moins un capteur de
température (12) pour détecter la température d'entrée de l'air au niveau du registre
de chauffage à CTP ou la température de sortie de l'air au niveau de l'échangeur de
chaleur, caractérisé en ce que le capteur de température (12) est agencé dans un espace (14) entre l'extrémité de
l'au moins un élément de radiateur (4) et le cadre (2) du registre de chauffage à
CTP.
2. Registre de chauffage à CTP selon la revendication 1, caractérisé en ce que le capteur de température (12) est reçu dans un boîtier (18) avec un connecteur (22)
dirigé vers l'extérieur au-delà du cadre (2).
3. Registre de chauffage à CTP selon la revendication 2, caractérisé en ce que le connecteur (22) est disposé au même niveau que les connecteurs (8) du registre
de chauffage à CTP.
4. Registre de chauffage à CTP selon la revendication 2 ou 3, caractérisé en ce que le boîtier (18) est construit de manière à pouvoir être détaché du cadre (2).
5. Registre de chauffage à CTP selon l'une des revendications précédentes, caractérisé en ce que les conducteurs requis pour plusieurs capteurs de température (12) sont posés dans
le cadre (2) du registre de chauffage à CTP.
6. Registre de chauffage à CTP selon l'une des revendications précédentes, caractérisé en ce que les éléments de radiateur sont construits sous la forme de rubans métalliques (4).
7. Registre de chauffage à CTP selon l'une des revendications précédentes, caractérisé en ce que les éléments à CTP (6) sont disposés entre les éléments de radiateur (4).
8. Registre de chauffage à CTP selon l'une des revendications précédentes, caractérisé en ce que le cadre (2) a une ouverture (10) à travers laquelle le capteur de température (12)
est inséré et disposé.
9. Registre de chauffage à CTP selon l'une des revendications précédentes, caractérisé en ce que le capteur de température (12) est entouré par un blindage de chaleur rayonnante
et de convection (20).
10. Registre de chauffage à CTP selon la revendication 9, caractérisé en ce que le blindage de chaleur rayonnante et de convection (20) est une couche unique.
11. Registre de chauffage à CTP selon la revendication 9, caractérisé en ce que le blindage de chaleur rayonnante et de convection (20) est en plusieurs couches.
12. Registre de chauffage à CTP selon l'une des revendications 9 à 11, caractérisé en ce que le blindage de chaleur rayonnante et de convection (20) est annulaire.
13. Registre de chauffage à CTP selon l'une des revendications 9 à 11, caractérisé en ce que le blindage de chaleur rayonnante et de convection (20) est rectangulaire.
14. Registre de chauffage à CTP selon l'une des revendications précédentes, caractérisé en ce que des connecteurs combinés sont prévus pour alimenter le registre de chauffage à CTP
ainsi que pour le signal provenant des capteurs de température (12).
15. Registre de chauffage à CTP selon la revendication 14, caractérisé en ce qu'un écran est prévu entre la région des connecteurs pour les capteurs de température
et celle pour l'alimentation électrique afin d'éviter des effets d'interférence électromagnétique.
16. Registre de chauffage à CTP selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu une commande électronique intégrée du registre de chauffage à CTP.
17. Registre de chauffage à CTP selon la revendication 16, caractérisé en ce que la commande électronique est prévue dans la région des connexions électriques.
18. Registre de chauffage à CTP selon l'une des revendications 16 et 17, caractérisé en ce qu'il est prévu un connecteur combiné pour les courants de commande de faible puissance
et l'électronique de puissance pour commander les éléments de radiateur.
19. Registre de chauffage à CTP selon. la revendication 18, caractérisé en ce que l'unité de commande électronique pour les éléments de radiateur contient une électronique
de faible puissance et/ou un microcontrôleur.