DE19740724A1 - Temperature sensor for pipework of heating, ventilating, air-conditioning system - Google Patents

Temperature sensor for pipework of heating, ventilating, air-conditioning system

Info

Publication number
DE19740724A1
DE19740724A1 DE19740724A DE19740724A DE19740724A1 DE 19740724 A1 DE19740724 A1 DE 19740724A1 DE 19740724 A DE19740724 A DE 19740724A DE 19740724 A DE19740724 A DE 19740724A DE 19740724 A1 DE19740724 A1 DE 19740724A1
Authority
DE
Germany
Prior art keywords
temperature sensor
housing
cable
contact surface
bore
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Withdrawn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
DE19740724A
Other languages
German (de)
Inventor
Josef Dipl Phys Dr Wueest
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.)
Electrowatt Technology Innovation AG
Original Assignee
Electrowatt Technology Innovation 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 Electrowatt Technology Innovation AG filed Critical Electrowatt Technology Innovation AG
Priority to DE19740724A priority Critical patent/DE19740724A1/en
Publication of DE19740724A1 publication Critical patent/DE19740724A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures

Abstract

Temperature sensor (1) suitable for attachment to the pipework of e.g. heating, ventilating and air-conditioning systems has a sensor element (3) and its cable (4) encapsulated (11) using thermally conducting resin (10) in a moulded plastic housing (2) having a flat undersurface (5), the flexible side ribs (6) and pliant bowed top (7). The assembly is conveniently attached to pipework (14) using a cable clip (9) which locates in a groove (8) in the bowed top (7) and is dimensioned to flex the ribs (6) outwards to ensure correct alignment along the pipe (14) with the surface (5) in good contact due to pressure from the top (7). A transverse hole (13) receives a peg (12) to lock in the cable (4) and provide stress-relief.

Description

Die Erfindung betrifft einen Temperaturfühler der im Oberbegriff des Anspruchs 1 genannten Art.The invention relates to a temperature sensor mentioned in the preamble of claim 1.

Solche Temperaturfühler eignen sich beispielsweise zur Messung der Temperatur eines Rohres, durch das warmes Wasser, z. B. Heizungswasser, oder ein Kältemittel strömt. Sie werden vorteilhaft in Heizungs-, Lüftungs- und Klimaanlagen verwendet.Such temperature sensors are suitable, for example, for measuring the temperature of a pipe the warm water, e.g. B. heating water, or a refrigerant flows. You will be advantageous in Heating, ventilation and air conditioning systems used.

Der Erfindung liegt die Aufgabe zugrunde, einen kompakten Temperaturfühler vorzuschlagen, der korrosionsbeständig, einfach herstellbar und zuverlässig montierbar ist.The invention has for its object to propose a compact temperature sensor, the corrosion-resistant, easy to manufacture and reliable assembly.

Die genannte Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruchs 1.According to the invention, the stated object is achieved by the features of claim 1.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Es zeigen:Show it:

Fig. 1 einen Temperaturfühler im Längsschnitt, Fig. 1 shows a temperature sensor in the longitudinal section,

Fig. 2a, b den Temperaturfühler im Querschnitt vor und nach der Befestigung an einem Rohr. Fig. 2a, b the temperature sensor in cross section before and after attachment to a tube.

Die Fig. 1 zeigt einen Temperaturfühler 1 im Längsschnitt. Der Temperaturfühler 1 besteht aus einem Gehäuse 2, einem Temperatursensor 3 und einem Kabel 4 zur Verdrahtung des Temperatursensors 3. Das aus Kunststoff gefertigte Gehäuse 2 weist längs einer Anlegefläche 5 verlaufende Lippen 6 und ein Federelement 7 in der Form eines gegenüber der Anlegefläche 5 angeordneten, mit einer Auflage 8 für einen Kabelbinder 9 versehenen Bügels auf. Der Temperatursensor 3 ist mit einer wärmeleitenden Paste 10 im Gehäuse 2 unmittelbar oberhalb der Anlegefläche 5 eingegossen. Das Kabel 4 ist durch eine längsgerichtete Bohrung 11 vom Innern des Gehäuses 2 nach draußen geführt. Das Gehäuse 2 weist weiter einen quer zur Bohrung 11 gerichteten, am Gehäuse 2 angeformten, mit diesem aber nur schwach verbundenen Zapfen 12 und eine in der Verlängerung des Zapfens 12 angeordnete zweite Bohrung 13 auf. Fig. 1 shows a temperature sensor 1 in longitudinal section. The temperature sensor 1 consists of a housing 2 , a temperature sensor 3 and a cable 4 for wiring the temperature sensor 3 . The housing 2 made of plastic has lips 6 running along a contact surface 5 and a spring element 7 in the form of a bracket arranged opposite the contact surface 5 and provided with a support 8 for a cable tie 9 . The temperature sensor 3 is cast with a thermally conductive paste 10 in the housing 2 immediately above the contact surface 5 . The cable 4 is guided through a longitudinal bore 11 from the inside of the housing 2 to the outside. The housing 2 further has a transversely directed to the bore 11, integrally formed on the housing 2, but only weakly associated with that pin 12 and, disposed in the extension of the pin 12 second bore. 13

Wie aus der Fig. 2a ersichtlich ist, sind die Lippen 6 seitlich am Gehäuse 2 angeformt und stehen leicht über die Anlegefläche 5 vor. Sie dienen als Hilfe bei der Positionierung des Temperaturfühlers 1 an einem Rohr 14. Sie sind seitlich verformbar. Bei der Befestigung des Temperaturfühlers 1 am Rohr 14 wird als Befestigungsmittel ein Befestigungsband, vorzugsweise ein handelsüblicher Kabelbinder 9 verwendet. Der Kabelbinder 9 wird in die Auflage 8 (Fig. 1) gelegt und so stark angezogen, daß sich die Lippen 6 seitlich so weit verformen, bis die Anlegefläche 5 satt auf dem Rohr 14 aufliegt. Beim Anziehen des Kabelbinders 9 wird auch das Federelement 7 vorgespannt. Bis zu einem gewissen Grad beeinträchtigt ein altersbedingtes Verfließen des Kabelbinders 9 somit die Temperaturmessung nicht, da die Anlegefläche 5 wegen des Federelementes 7 weiterhin gegen das Rohr 14 gedrückt wird. Die Fig. 2b zeigt den am Rohr 14 befestigten Temperaturfühler 1.As can be seen from FIG. 2 a , the lips 6 are integrally formed on the side of the housing 2 and protrude slightly beyond the contact surface 5 . They serve as an aid in positioning the temperature sensor 1 on a tube 14 . They are laterally deformable. When fastening the temperature sensor 1 to the pipe 14 , a fastening tape, preferably a commercially available cable tie 9 , is used as the fastening means. The cable tie 9 is placed in the support 8 ( FIG. 1) and tightened so much that the lips 6 laterally deform until the contact surface 5 lies snugly on the tube 14 . When tightening the cable tie 9 , the spring element 7 is also biased. To a certain extent, age-related flow of the cable tie 9 does not affect the temperature measurement, since the contact surface 5 is still pressed against the pipe 14 because of the spring element 7 . FIG. 2b shows the pipe 14 attached to the temperature sensor 1.

Der Zapfen 12 und die Bohrung 13 sind so angeordnet, daß der in die Bohrung 13 hineingedrückte Zapfen 12 den Querschnitt der ersten Bohrung 11 verkleinert und daher das Kabel 4 festklemmt. Der Zapfen 12 dient somit als Kabelzugentlastung.The pin 12 and the bore 13 are arranged so that the pin 12 pressed into the bore 13 reduces the cross section of the first bore 11 and therefore clamps the cable 4 . The pin 12 thus serves as a cable strain relief.

Bei einer ersten Ausführung ist der Temperatursensor 3 durch die Anlegefläche 5 vom Rohr 14 getrennt. Das Vergießen des Temperatursensors 3 mit der wärmeleitenden Paste 10 gestaltet sich einfach, da die wärmeleitende Paste 10 nur in die Bohrung 11 hineingefüllt und ausgehärtet werden muß.In a first embodiment, the temperature sensor 3 is separated from the pipe 14 by the contact surface 5 . The casting of the temperature sensor 3 with the thermally conductive paste 10 is simple since the thermally conductive paste 10 only has to be filled into the bore 11 and cured.

Bei einer zweiten Ausführung weist die Anlegefläche am Ort des Temperatursensors 3 eine Öffnung auf. Zum Vergießen des Temperatursensors 3 wird die Öffnung mit einer Folie abgedeckt. Nach dem Aushärten der wärmeleitenden Paste 10 wird die Folie abgezogen.In a second embodiment, the contact surface has an opening at the location of the temperature sensor 3 . To cast the temperature sensor 3 , the opening is covered with a film. After the thermally conductive paste 10 has hardened, the film is removed.

Beide Ausführungen zeichnen sich durch eine hohe Widerstandsfähigkeit gegen Korrosion und kurze Reaktionszeiten bei einem Temperatursprung auf.Both versions are characterized by high resistance to corrosion and short Response times in the event of a jump in temperature.

Der Zapfen 12 wird bevorzugt unmittelbar nach dem Einfüllen der wärmeleitenden Paste 10 hinein­ gedrückt, so daß der Temperaturfühler 1 zum Aushärten am Kabel 4 aufgehängt werden kann.The pin 12 is preferably pressed in immediately after the heat-conducting paste 10 has been filled in, so that the temperature sensor 1 can be hung from the cable 4 for curing.

Claims (4)

1. Temperaturfühler (1), der aus einem Gehäuse (2), einem Temperatursensor (3) und einem Kabel (4) zur externen Verdrahtung des Temperatursensors (3) besteht, wobei eine Anlegefläche (5) des Gehäuses (2) mit Befestigungsmitteln (9) an einem Rohr (14) oder auf einer ebenen Fläche so befestigbar ist, daß ein guter Wärmekontakt vom Rohr (14) zum Temperatursensor (3) gegeben ist, dadurch gekenn­ zeichnet, daß das Gehäuse (2) längs der Anlegefläche (5) verlaufende, über diese vorstehende Lippen (6) aufweist, daß die Lippen (6) seitlich verformbar sind und daß das Gehäuse (2) ein Federelement (7) aufweist, wobei vorgesehen ist, daß die Befestigungsmittel (9) bei der Montage einerseits das Federelement (7) vorspannen und andererseits die Lippen (6) verformen, bis die Anlegefläche (5) satt auf dem Rohr (14) bzw. auf der ebenen Fläche aufliegt.1. Temperature sensor ( 1 ), which consists of a housing ( 2 ), a temperature sensor ( 3 ) and a cable ( 4 ) for external wiring of the temperature sensor ( 3 ), with a contact surface ( 5 ) of the housing ( 2 ) with fastening means ( 9 ) can be fastened to a pipe ( 14 ) or on a flat surface in such a way that there is good thermal contact from the pipe ( 14 ) to the temperature sensor ( 3 ), characterized in that the housing ( 2 ) along the contact surface ( 5 ) extending, projecting over these lips ( 6 ), that the lips ( 6 ) are laterally deformable and that the housing ( 2 ) has a spring element ( 7 ), it being provided that the fastening means ( 9 ) on the one hand the spring element during assembly ( 7 ) pre-tension and on the other hand deform the lips ( 6 ) until the contact surface ( 5 ) fits snugly on the tube ( 14 ) or on the flat surface. 2. Temperaturfühler (1) nach Anspruch 1, dadurch gekennzeichnet, daß der Temperatursensor (3) mit einer wärmeleitenden Paste (10) im Gehäuse (2) eingegossen ist.2. Temperature sensor ( 1 ) according to claim 1, characterized in that the temperature sensor ( 3 ) with a thermally conductive paste ( 10 ) is cast in the housing ( 2 ). 3. Temperaturfühler (1) nach Anspruch 2, dadurch gekennzeichnet, daß die Anlegefläche (5) eine Öffnung aufweist, in der der Temperatursensor (3) eingegossen ist, wobei die wärmeleitende Paste (10) die Öffnung plan zur Anlegefläche (5) ausfüllt.3. Temperature sensor ( 1 ) according to claim 2, characterized in that the contact surface ( 5 ) has an opening in which the temperature sensor ( 3 ) is cast, the heat-conducting paste ( 10 ) filling the opening flat to the contact surface ( 5 ). 4. Temperaturfühler (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Gehäuse (2) eine erste Bohrung (11) zur Kabeldurchführung aufweist, daß das Gehäuse (2) einen angeformten, quer zur ersten Bohrung (11) gerichteten Zapfen (12) und eine in der Verlängerung des Zapfens (12) angeordnete zweite Bohrung (13) aufweist, in die der Zapfen (12) hineindrückbar ist, wobei der hineingedrückte Zapfen (12) den Durchmesser der ersten Bohrung (11) verkleinert und daher das Kabel (4) festklemmt.4. Temperature sensor ( 1 ) according to one of claims 1 to 3, characterized in that the housing ( 2 ) has a first bore ( 11 ) for cable passage, that the housing ( 2 ) has an integrally formed, transverse to the first bore ( 11 ) pin (12) and, disposed in the extension of the pin (12) second bore (13), into which the pin (12) can be pressed, wherein the pushed in pin (12) reduces the diameter of the first bore (11) and therefore the cable ( 4 ) is clamped.
DE19740724A 1996-12-10 1997-09-16 Temperature sensor for pipework of heating, ventilating, air-conditioning system Withdrawn DE19740724A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19740724A DE19740724A1 (en) 1996-12-10 1997-09-16 Temperature sensor for pipework of heating, ventilating, air-conditioning system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29621433U DE29621433U1 (en) 1996-12-10 1996-12-10 Temperature sensor
DE19740724A DE19740724A1 (en) 1996-12-10 1997-09-16 Temperature sensor for pipework of heating, ventilating, air-conditioning system

Publications (1)

Publication Number Publication Date
DE19740724A1 true DE19740724A1 (en) 1998-06-18

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Family Applications (2)

Application Number Title Priority Date Filing Date
DE29621433U Expired - Lifetime DE29621433U1 (en) 1996-12-10 1996-12-10 Temperature sensor
DE19740724A Withdrawn DE19740724A1 (en) 1996-12-10 1997-09-16 Temperature sensor for pipework of heating, ventilating, air-conditioning system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE29621433U Expired - Lifetime DE29621433U1 (en) 1996-12-10 1996-12-10 Temperature sensor

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DE (2) DE29621433U1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322366A1 (en) * 2003-01-30 2004-08-12 Laing, Oliver Heating arrangement for liquid in e.g. basin has temperature sensor with thermal connection to heater for heater temperature detection; sensor can detect absolute temperatures, temperature changes
DE10327493A1 (en) * 2003-06-17 2005-01-20 Böhm GmbH & Co. KG Electronic temperature limiter temperature measurement point for explosion sensitive atmospheres is clamped to heating cable with thermal coupling and insulation
DE102009007948A1 (en) * 2009-02-06 2010-09-16 Beat Halter Tubular or rod-like object temperature determining device for use during e.g. air conditioning, has base body detachably attached to tubular or rod-like object, and temperature sensor attached to base body
DE102009018594A1 (en) * 2009-04-20 2010-10-21 Ifm Electronic Gmbh Fastening device for sensor, has retaining element formed like prism such that band-shaped clamping element varies prism angle of retaining element and/or position of retaining element relative to base plane
DE102017118109A1 (en) * 2017-08-09 2019-02-14 Endress + Hauser Flowtec Ag sensor assembly

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910286A1 (en) * 1999-03-09 2000-09-21 Electrowatt Tech Innovat Corp Methods for temperature measuring in witch medium to be measured is separated from environment by coupling separating element to coated temperature sensor for directing medium to heat-conductive area of sensor
DE10227454A1 (en) * 2001-11-12 2003-05-22 Temperaturmestechnik Geraberg Contact temperature sensor has a contact body with a recess containing heat conducting paste covered by a heat conducting film that is brought into contact with a test body so that paste if forced through film perforations
DE102021109410A1 (en) * 2021-04-14 2022-10-20 Endress + Hauser Wetzer Gmbh + Co. Kg Non-invasive thermometer

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE1935236A1 (en) * 1969-07-11 1971-01-14 Siemens Ag multiplier
DE3126931A1 (en) * 1981-07-08 1983-02-03 Ultrakust Gerätebau GmbH & Co KG, 8375 Ruhmannsfelden Retaining device for a temperature sensor
DE3127389A1 (en) * 1981-07-10 1983-02-17 Hubert Prof. Dr.-Ing. 8000 München Kurz Electrical temperature measuring device having self-adhesive components on ferromagnetic materials
US5370459A (en) * 1993-06-08 1994-12-06 Claud S. Gordon Company Surface temperature probe with uniform thermocouple junction
US5454641A (en) * 1994-01-13 1995-10-03 Ranco Incorporated Of Delaware Temperature transducer assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1935236A1 (en) * 1969-07-11 1971-01-14 Siemens Ag multiplier
DE3126931A1 (en) * 1981-07-08 1983-02-03 Ultrakust Gerätebau GmbH & Co KG, 8375 Ruhmannsfelden Retaining device for a temperature sensor
DE3127389A1 (en) * 1981-07-10 1983-02-17 Hubert Prof. Dr.-Ing. 8000 München Kurz Electrical temperature measuring device having self-adhesive components on ferromagnetic materials
US5370459A (en) * 1993-06-08 1994-12-06 Claud S. Gordon Company Surface temperature probe with uniform thermocouple junction
US5454641A (en) * 1994-01-13 1995-10-03 Ranco Incorporated Of Delaware Temperature transducer assembly

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
61-243333 A.,P- 558,March 23,1987,Vol.11,No. 91 *
JP Patents Abstracts of Japan: 61-219841 A.,P- 548,Feb. 18,1987,Vol.11,No. 52 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322366A1 (en) * 2003-01-30 2004-08-12 Laing, Oliver Heating arrangement for liquid in e.g. basin has temperature sensor with thermal connection to heater for heater temperature detection; sensor can detect absolute temperatures, temperature changes
DE10322366B4 (en) * 2003-01-30 2008-03-13 Laing, Oliver Heating device for a liquid in a tank
DE10327493A1 (en) * 2003-06-17 2005-01-20 Böhm GmbH & Co. KG Electronic temperature limiter temperature measurement point for explosion sensitive atmospheres is clamped to heating cable with thermal coupling and insulation
DE10327493B4 (en) * 2003-06-17 2007-12-20 Böhm GmbH & Co. KG Temperature measuring device
DE102009007948A1 (en) * 2009-02-06 2010-09-16 Beat Halter Tubular or rod-like object temperature determining device for use during e.g. air conditioning, has base body detachably attached to tubular or rod-like object, and temperature sensor attached to base body
DE102009018594A1 (en) * 2009-04-20 2010-10-21 Ifm Electronic Gmbh Fastening device for sensor, has retaining element formed like prism such that band-shaped clamping element varies prism angle of retaining element and/or position of retaining element relative to base plane
DE102009018594B4 (en) 2009-04-20 2020-06-04 Ifm Electronic Gmbh Fastening device for a sensor
DE102017118109A1 (en) * 2017-08-09 2019-02-14 Endress + Hauser Flowtec Ag sensor assembly
US11428578B2 (en) 2017-08-09 2022-08-30 Endress+Hauser Flowtec Ag Sensor assembly

Also Published As

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