WO2014005707A1 - Plaque de commande pour un chauffe-eau instantané - Google Patents

Plaque de commande pour un chauffe-eau instantané Download PDF

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Publication number
WO2014005707A1
WO2014005707A1 PCT/EP2013/001955 EP2013001955W WO2014005707A1 WO 2014005707 A1 WO2014005707 A1 WO 2014005707A1 EP 2013001955 W EP2013001955 W EP 2013001955W WO 2014005707 A1 WO2014005707 A1 WO 2014005707A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
section
heating block
printed circuit
sensor element
Prior art date
Application number
PCT/EP2013/001955
Other languages
German (de)
English (en)
Other versions
WO2014005707A4 (fr
WO2014005707A9 (fr
Inventor
Martin Jansen
Thorsten Wojciechowski
Original Assignee
Stiebel Eltron Gmbh & Co. Kg
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 Stiebel Eltron Gmbh & Co. Kg filed Critical Stiebel Eltron Gmbh & Co. Kg
Publication of WO2014005707A1 publication Critical patent/WO2014005707A1/fr
Publication of WO2014005707A9 publication Critical patent/WO2014005707A9/fr
Publication of WO2014005707A4 publication Critical patent/WO2014005707A4/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/0278—Rigid circuit boards or rigid supports of circuit boards locally made bendable, e.g. by removal or replacement of material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/238—Flow rate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/25—Temperature of the heat-generating means in the heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/06—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
    • G01F1/075—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0266—Marks, test patterns or identification means
    • H05K1/0268—Marks, test patterns or identification means for electrical inspection or testing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/04—Sensors
    • F24D2220/044—Flow sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/407—Control of fluid heaters characterised by the type of controllers using electrical switching, e.g. TRIAC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09063—Holes or slots in insulating substrate not used for electrical connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09081—Tongue or tail integrated in planar structure, e.g. obtained by cutting from the planar structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10151—Sensor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/30—Details of processes not otherwise provided for in H05K2203/01 - H05K2203/17
    • H05K2203/302—Bending a rigid substrate; Breaking rigid substrates by bending

Definitions

  • the present invention relates to an electronic circuit board for controlling and / or monitoring a heating block having a heater for heating a liquid medium. Moreover, the present invention relates to such a heating block. Furthermore, the present invention relates to a heater, in particular a water heater with such a heating block. The invention also relates to a method for installing a sensor on such a heating block.
  • Heating appliances for heating a liquid medium in particular instantaneous water heaters, are generally known.
  • water heater for heating or heating of water are known, which heat the water while it flows through this heater.
  • other liquid media can be heated according to this principle, but the following explanations explain the relationships representatively with reference to water.
  • Such a flow heater comprises a heating block with flow channels for guiding the water to be heated.
  • heating elements such as, helical heating walls are arranged. For monitoring and possibly resulting control of the heating or warm-up process, measurements are taken with
  • CONFIRMATION COPY provided by talking sensors.
  • parameters such as flow velocity and flow rate, temperature and pressure of the water can be recorded and further utilized.
  • the actual physical measurement of the relevant parameter or of a representative parameter can take place via sensors which are arranged indirectly on or in a flow channel. At least such sensors are located directly on or in the heating block having the flow channels.
  • a far-reaching recording and evaluation of the measured values and possibly taking into account in the context of a control or regulation can be carried out by means of an electronic printed circuit board, which carries a corresponding evaluation, or the recorded data can be a further evaluation, such as.
  • a control chip or process computer supplied
  • So-called flow-rate detection systems are installed in electronically controlled or regulated instantaneous water heaters to determine the amount of water flowing through the water heater and to determine how much energy to add to the water to maintain the selected water temperature.
  • a magnetic wheel which transmits the flow signal to a sensor, a so-called Hall IC, by means of the magnetic fields located on the wheel.
  • Hall IC has hitherto either been installed in a separate housing or plugged into the heating block via a small printed circuit board.
  • the electrical contacting of the Hall IC or the Hall IC module with a corresponding control or evaluation device must be made via additional connecting elements. For this plug or solder contacts come into consideration.
  • An adaptation or adaptation of a flow quantity detection unit is achieved via separate components with the heating block.
  • the bearing points of the impeller may be located.
  • a corresponding adapter piece can also be plugged into the heating block.
  • the German utility model DE 20 2008 017 937 U1 shows, for example, a corresponding impeller with magnet.
  • an electrical connection from the sensors, or from one sensor when only one sensor is used, to the electronic circuit board.
  • Such an electronic connection is usually made by means of appropriately prepared plug contacts.
  • an insulated wire can be soldered to one end on the printed circuit board and be provided at its other end with a plug that fits on a corresponding plug on the heating block and is plugged there after the printed circuit board has been attached to the heating block.
  • the invention is therefore based on the object, at least one of the o.g. To address problems.
  • the coupling between sensors in the heating block and an electronic evaluation system should be improved. If possible, elements are to be saved, the arrangement of corresponding printed circuit boards are made more failsafe and / or costs are saved. Preferably, a correct arrangement of a printed circuit board without the use of additional components to be created. At least an alternative solution should be specified.
  • an electronic printed circuit board for controlling and / or monitoring a heating block having a heating device for heating a liquid medium according to claim 1 is proposed.
  • a printed circuit board comprises a base plate having a main portion, a minor portion and at least one elastic web portion connecting the minor portion to the main portion.
  • the main portion is provided for attachment to or on the heating block.
  • corresponding bores for fastening the base plate to the heating block may be provided, to name only one example.
  • the base plate which has the main portion, secondary portion and web portion, in particular consists of these three sections, has at least one connecting track, which extends from the main portion via the web portion to the secondary portion.
  • the secondary section can thus be electrically connected to the main section via the web section by means of this, at least one, interconnecting conductor track.
  • the printed circuit board on a basically flat base plate.
  • the secondary section is determined by at least one sensor element for receiving at least one measured variable of the heating block. It is thus proposed to arrange such a sensor element on the secondary section. In that regard, it is even proposed to arrange such a sensor element on the printed circuit board, namely the base plate, instead of arranging this on a separate board or otherwise separately from the printed circuit board.
  • the secondary section is connected so elastically to the main section via the at least one web section that the secondary section can be bent out of the main plane by bending the web section.
  • a bend is addressed in which the at least one interconnecting conductor track is not damaged, so that even in the case of this bend, electrical current can continue to flow via this conductor track.
  • the sensor element can be connected via this track to further elements on the main section and functionally coupled. This connection or coupling remains in spite of bending of the base plate in the region of the web section. That one or more such pathways are not damaged when bending the web portion can, for example, be achieved in that the material of the relevant track has a corresponding elasticity.
  • the layer can be provided as being particularly inelastic, on which the at least one printed conductor is arranged.
  • the bending of the web portion then results in fewer compressions or elongations in this layer than in the other layers.
  • the effect of a bend on the at least one printed conductor is correspondingly low.
  • Another way to prevent damage to at least one trace is to artificially extend the trace on the land portion by, for example, obliquely or meandering, zigzag or similar.
  • the web section can also be designed such that the bending out of the secondary section from the main plane only leads to weak bends in the region of the at least one web section.
  • the web portion for example. Be formed by a corresponding course very long, such as. By a labyrinthine course.
  • the bending of the auxiliary section from the main section is provided so that the at least one sensor element is adapted in its position and / or orientation to the heating block.
  • the sensor element can thereby be closer to the heating block If necessary, when mounting the printed circuit board to the heating block, the secondary section of the heating block can also be pushed away.
  • the distance between the sensor element and the heating block in particular at a position at which the sensor element or the printed circuit board touches the heating block in this area, denotes the position of the sensor element to the heating block.
  • the sensor element or a relevant region of the secondary section, on which the sensor element is arranged have a certain areal extent, which is not negligible, so that it can not be assumed that a point-shaped sensor element.
  • a plane parallelism of such a surface of the sensor element or the corresponding region of the auxiliary section to a corresponding surface, in particular contact surface, of the heating block denotes an alignment.
  • a plane-parallel alignment of such two surfaces is only one possible orientation.
  • the elastic web portion only allows a plane-parallel alignment between the sensor element and heating block.
  • the sensor element can therefore be provided on the base plate of the printed circuit board, the sensor element and adjust due to the elasticity of the web portion in position and alignment with the radiator.
  • electrical connections can be achieved by corresponding electrical contacts at a corresponding point of contact, whereby electrical connectors can be avoided.
  • the structure of the printed circuit board and the attachment of the same to the heating block for the purpose of coupling with sensor elements of the heating block can thus be made simple.
  • the secondary section may preferably be bent out of the main plane by at least one, preferably at least three, average thicknesses of the electronic printed circuit board, such that the secondary section in the region of the at least one electronic sensor element mounted on the secondary section is at least one of these average thicknesses, in particular at least three of these average thicknesses can be bent in a direction perpendicular to the main plane from the main plane.
  • the printed circuit board in particular in the region of its main section, be mounted on a body such as the heating block and on the Leiterpia-
  • the sensor element which is fastened to the tine can still be changed in its position by at least one or at least three thicknesses.
  • Arrangement and interconnection of the electrical sensor element on the board can be done in a simple manner before mounting the boards.
  • a control unit electrically connected to the sensor element is preferably provided on the main section.
  • An electrical connection is made, in particular, via the at least one conductor track which is provided between the secondary section and the main section via the web section.
  • the at least one sensor element is soldered as an SMD component on the circuit board.
  • An SMD component is one that is soldered directly to a circuit board without the use of wires.
  • the abbreviation SMD was written in English and stands for "Surface Mounted Device". In this way, the arrangement of a corresponding sensor element can be further simplified by this is arranged and soldered as an SMD component on the secondary section and can be connected via the web portion with a controller.
  • the secondary section is tiltable relative to the main plane via the at least one web section in at least two directions, in particular in two orthogonal directions. Due to this tiltability in several directions, in particular a flexible possibility of aligning the auxiliary section, in particular a sensor element installed there, is to be achieved.
  • the secondary section is surrounded by the main section, that, in addition or instead, free cuts are provided between the secondary section and the main section and a plurality of the web sections are formed between the cutouts.
  • a conventional, for example, rectangular, board or board plate can be used. This is then provided with cutouts, so it will be made recesses that separate the secondary section of the remaining main section.
  • the free cuts, and thus the resulting or remaining web portions can now be designed so that there is a corresponding flexibility.
  • the web portions represent a direct or shortest connection between the subsection and the main section, thereby making as long as possible in particular the respective connection path, which creates a web portion, thereby increasing the flexibility of the connection between the minor and major section ,
  • the cutouts may also be provided so that labyrinth-like web section arise.
  • Such a labyrinth-like configuration also leads to long connecting sections between secondary section and main section, namely connecting sections which are significantly longer than the actual distance to be bridged between secondary section and main section.
  • the at least one web section and / or corresponding cutouts are designed at least in sections in a labyrinth-like manner.
  • the at least one of the web sections and / or the cutouts are formed wholly or partially spirally. Also, by a spiral-shaped configuration, as described above, a flexibility of the connection between the secondary section and the main section can be achieved.
  • the at least one web section and / or the free cuts run from the main section to the secondary section by at least 90 ° around the at least one sensor element.
  • the at least one conductor track runs from the main section to the secondary section by at least 90 ° around the at least one sensor element. This also creates a route of mechanical or electrical connection between the main and secondary sections, which is considerably longer than the actual distance between the secondary and main sections. Accordingly, the flexibility can be increased. A bend that leads to a positional deviation of the secondary section compared to the main section by only a few thicknesses of the board leads to little or even barely noticeable bends in such extended web sections.
  • a printed circuit board is used, which has a commonly used material of a board.
  • a printed circuit board is so far substantially or exclusively adapted in their form by side section and web portion are created, in particular by the described free cuts are made.
  • Such a printed circuit board is usually made of an elastic material, so that a bend leads to a permanent counterforce.
  • the secondary section forms with the web section a finger section extending in a finger-like manner from the main section in one direction.
  • a finger portion may, for example, have one fifth or less of the width of the main portion and have a length which has at least 3 times, in particular at least 5 times, the value of the width of the web portion or of the finger portion.
  • a printed circuit board can be provided which contains control units, evaluation units and / or other desired elements or assemblies in a known manner on a main section.
  • at least one sensor element this is provided on a slender finger-like finger portion basically at the end and is connected to corresponding elements on the main portion via corresponding conductor tracks on the finger portion.
  • the at least one sensor element may be a Hall IC for receiving magnetic signals, in particular magnetic signals of a magnetic wheel for detecting a flow rate.
  • a corresponding magnetic wheel can be installed in the heating block and the printed circuit board is installed on the heating block so that the secondary section with the sensor element thereon, namely the Hall IC, is arranged immediately adjacent to the magnetic wheel, the sensor element can receive there the signals of the magnetic wheel and forward to the main section for evaluation.
  • the sensor element is a temperature sensor for detecting a temperature in the heating block.
  • the printed circuit board such can be arranged at a desired position on the heating block.
  • the sensor element can either directly record and measure a temperature or receive corresponding signals from an electrical component, such as a sensor, which is permanently installed on or in the heating block. For example. Resistance values of a temperature-dependent resistor, which is arranged in the heating block, can be evaluated by the sensor on the circuit board.
  • a pressure sensor for detecting a pressure, a pressure sensor is provided, which thus forms the electrical sensor element. Also, such a pressure sensor can directly or indirectly detect a pressure, as explained in connection with the temperature sensor.
  • a test circuit for checking whether an electrical contact has been made between the sensor element on the secondary section and the heating block.
  • This test circuit comprises a first and second contact.
  • the test circuit is prepared to detect whether an electric current flows from the first contact point to the second contact point.
  • two contact points are provided at the minor portion of the printed circuit board. These are to be connected to corresponding mating contact points of the heating block, namely such that the first contact point with the first mating contact point and the second contact point with the second mating contact point are connected. It is assumed that the first and second mating contact point are electrically connected to each other. Now, if the above contact between the first and second contact point and the first and second mating contact point made, there is a galvanic connection between the first and second contact point and about the galvanic connection of the two mating contact points with each other.
  • the test circuit checks whether an electric current flows from the first contact point to the second contact point and thereby in particular checks whether there is a contact between the first contact point and the first mating contact point and / or if there is a contact between the second contact point and the second mating contact point, because only then can an electrical contact Current flow from the first contact point to the second contact point, which also flows over the heating block.
  • the first contact point is preferably prepared with an evaluation unit, in particular the sensor element for evaluating a sensor or sensor part connected to the first mating contact.
  • the first contact point and its contact to the first Jacob.tician is therefore important for the functionality of the evaluation by the sensor element, namely information, in particular in the form of electrical signals, can be passed through this contact between the first contact point and the first mating contact point to the sensor element or evaluation on the circuit board. If this contact does not exist between the first contact point and the first counter contact point, this information can not be transmitted. Thus, by checking whether current flows between the first and second contact points, it can be checked whether this contact exists and otherwise an error message can be output.
  • the second contact point may comprise a spring element in order to improve a galvanic contact between the second contact point and the second counter contact point.
  • a relatively secure contact between the second contact point and the second counter contact point can be achieved by this spring element. If it is now detected that no current flows between the first and the second contact point, it can be concluded, assuming contact between the second contact point and the second mating contact point, that there is no contact between the first contact point and the first mating contact point.
  • the first contact point is an electrical positive pole and the second electrical contact point is a negative electrical pole.
  • at least the test circuit uses a DC current to test the contact.
  • test circuit is formed so that the electric current between the first and second contact point can flow only through the first and second mating contact point when the first and second mating contact point are electrically connected to each other.
  • a heating block of a heater in particular a heating block of a water heater
  • the printed circuit board has a base plate having a main portion, a minor portion and at least one elastic web portion connecting the minor portion to the main portion, the minor portion, the main portion and the land portion in a relaxed state lie in a common main plane
  • the secondary section is equipped with at least one sensor element for receiving at least one measured variable of the heating block
  • the printed circuit board is attached to the heating block, that the sensor element provides a assumes ne position and by bending the web portion of the side portion in a region, in particular in the region of the at least one sensor element, on a Schublock stresses for receiving or guiding the liquid medium, is applied.
  • a printed circuit board according to at least one of the embodiments described above is used. This is fastened with its main portion to the heating block, that the sensor element occupies a predetermined position at the side portion.
  • the secondary section for the sensor element or the region of the secondary section bearing the sensor element achieves the flexibility or freedom to adapt to the heating block.
  • the sensor element can assume a position outside the main plane of the board, and / or that the sensor element or the corresponding section on the secondary section can be tilted relative to the main plane of the board. It is therefore achieved a different position and deviating orientation in a simple manner, namely, allows an adaptation to the heating block.
  • the radiator is pressed by the radiator from the main plane.
  • this can take place when the printed circuit board is fastened to the heating block, but in particular it is also a static state when the printed circuit board is fastened to the heating block or heating block body.
  • the secondary section can be pressed by a fastening means from the main plane against the Schublock emotions.
  • the secondary section is pressed, in particular from the main plane of the board to the heating block, in particular Bankblock stresses out.
  • the heating block has first and second galvanically interconnected mating contact points prepared for galvanic contacting with the first and second contact points of the printed circuit board, respectively, when attached to the heating block body.
  • first and second galvanically interconnected mating contact points prepared for galvanic contacting with the first and second contact points of the printed circuit board, respectively, when attached to the heating block body.
  • a heating device in particular a continuous flow heater with a heating block, is preferably designed according to one of the described embodiments.
  • the advantages described, in particular the cost-effective design and the avoidance of errors, are beneficial according to the heater, which can thereby be even cheaper and may have a lower susceptibility to errors.
  • a printed circuit board is positioned on the heating block and in particular also attached and then made a measurement of electrical conductivity between the printed circuit board or between the sensor element and a arranged on the heating block reference element.
  • the comparison with the reference value does not necessarily have to be very precise. It may be sufficient to check whether any current is flowing when a corresponding electrical test voltage is applied.
  • the printed circuit board is repositioned and the check repeated.
  • a test circuit is used for this, as described above in some embodiments.
  • a printed wiring board according to at least one of the above embodiments is used and / or a heater block according to any one of the above embodiments is used.
  • FIG. 1 shows a heating block with a composite of two partial shells
  • FIG. 2 shows a detail of a heating block similar to FIG. 1 in a perspective view.
  • FIG. 3 shows the detail of FIG. 2 in a plan view
  • FIG. 4 shows the detail of FIG. 2 in a side view.
  • FIG. 5 shows the detail of FIG. 2 in a further side view.
  • FIG. 6 shows the detail of FIG. 2 in a sectional view.
  • FIG. 7 shows the section of FIG. 2 in a further sectional view.
  • Figure 8 shows a section of a control board according to an embodiment with a finger-like extending finger portion.
  • FIG. 9 shows a further embodiment of a printed circuit board with a spiral-shaped web section.
  • FIG. 10 shows a further embodiment of a printed circuit board with a labyrinth-shaped web section.
  • FIG. 11 schematically shows a section of a secondary section with a test circuit.
  • FIG. 12 schematically shows the side section of FIG. 11 in a front view schematically.
  • the figures contain partially simplified, schematic representations. In part, identical reference numerals are used for the same but possibly not identical elements. Different views of the same elements can be scaled differently.
  • FIG. 1 shows a perspective view of a heating block 100 with a Walkerblock- body 102, which is composed essentially of a first sub-shell 1 'and a second sub-shell 2'.
  • the second sub-shell 2 ' is disposed substantially below the first sub-shell 1', wherein in the figure 1 in the area bottom left, the second sub-shell 2 'protrudes below the first sub-shell 1'.
  • flow channels 104 are formed, which carry water as intended, which flows through them and can be heated in some of the flow channels 104.
  • the heating can be done, for example, by means of heating coils, which can be electrically controlled via so-called triacs 106.
  • the water to be heated or the heated water can flow in and out through in each case one of the water connections 108.
  • a receiving recess 13 ' is shown, which can basically accommodate a magnetic wheel which is moved by the flowing water.
  • the rotational speed of such a magnetic wheel thus provides information about the flow velocity of the water and thus about the flow rate.
  • To evaluate the movement of the magnetic wheel must be detected by means of a corresponding sensor. This can be done by a Hall sensor or Hall IC, which detects the magnetic field or changed magnetic field, which is changed or generated by the movement of the magnetic wheel or by individual magnetic vanes or magnetic pins of the magnetic wheel.
  • a measuring receptacle 110 is provided for arranging such a Hall sensor.
  • FIG. 1 uses the primed reference numerals 1 ', 2', and 13 'for the first subshell, the second subshell, and the bulge, for the context to illustrate the similar but not identical embodiments.
  • FIG. 2 shows a detail of a first partial shell 1, which is assembled with a second partial shell 2, in a perspective view.
  • the first partial shell 1 has a first inner side 4 with a first partial cavity 8 and a first outer side 6.
  • the second partial shell 2 has a second inner side 5 with a second partial cavity 9 and a second outer side 7.
  • a bulge 13 can be seen, which receives a rotational body of a flow rate measurement device.
  • the first sub-shell 1 and the second sub-shell 2 are connected to each other via a joining region 12, so that they form a cavity 3 between the two sub-cavities 8 and 9 which can also be referred to as a cavity.
  • the cavity 3 in turn forms a water passage.
  • a printed circuit board 10 is arranged with a sensor 11 shown schematically.
  • the sensor 11 detects the revolutions of a magnetic disk arranged in the cavity and attached to the rotary body in order to thus determine the flow rate of the water.
  • FIGS. 1a to 1c show the assembled partial shells 1 and 2 in a plan view and side view, respectively.
  • FIG. 1c two rows of pins 21 arranged parallel to one another can be seen in the cavity 3, which pins are fastened to a rotary body.
  • the rotary body is set in rotation with the pins 21.
  • FIG. 1d shows the sectional view AA of the assembled partial shells 1 and 2 of FIG. 1.
  • the second partial shell 2 forms a receiving space 25 in the area of the bulge 13, for receiving the rotary body 20 of a flow volume measuring device.
  • the receiving space 25 is formed solely by the second sub-shell 2.
  • the first sub-cavity 8 and the second sub-cavity 9 each have, in the flow direction 32 in front of the rotational body 20, a taper 30 or 31 of the cross-section on.
  • the tapers 30 and 31 are arranged mirror-symmetrically to one another. As a result, a nozzle is formed, in which the water is accelerated and can be directed to the rotational body 20 in a targeted manner.
  • the rotary body 20 is arranged in the receiving space 25 or in the partial shells 1 and 2.
  • the sensor 11 is arranged on the first outer side 6 above the rotational body 20.
  • the rotary body 20 has a ring 21 on which ten pins 21 are arranged radially to the axis of rotation 23.
  • the pins 21 form a small attack surface for the water flowing through which the body of revolution is moved.
  • a magnetic disk 23 is arranged on the rotary body 20.
  • the magnetic disk 23 is preferably formed of a magnetized plastic, in particular of a plastic, which includes magnetic material and / or has permanent magnetic properties. The magnetic disk 23 rotates with the rotary body 20 and thereby generates a signal in the sensor 11 representative of the flow rate.
  • FIG. 1e shows the sectional view B-B of the assembled part shells 1 and 2 of FIG. 1.
  • the first subshell 1 has two support arms 14 arranged parallel to one another, each of which has a pin-shaped element 15 pointing towards the rotation body 20 in the direction of the rotation axis 24.
  • the support arms 14 extend into the receiving space 25 and rest on one side at least partially against the second partial shell 2.
  • the rotary body 20 has two central receptacles in the form of holes 16, which have approximately the same axis of rotation 24 with the central axis.
  • the rotary body has two rings 22, which are arranged parallel to one another in the direction of the axis of rotation 24.
  • two rows of pins 21 are mounted, which are also arranged parallel to each other in the direction of the axis of rotation 24.
  • a magnetic disk 23 can be seen, which is arranged rotationally fixed on the rotary body 20. In the receptacles 16, the pin-like elements 15 of the first sub-shell 1 engage.
  • the rotary body 20 is thus rotatably fixed between the two support arms 14.
  • the two support arms 14 are elastic, so that they can be bent apart to use the rotary body 20, as long as they are not inserted into the second sub-shell 2. In the position shown in FIG. 1e, inserted into the second partial shell, the support arms 14 are prevented from being bent apart again by the second partial shell 2, as a result of which the rotary body 20, that is to say the small wheel 20, is fixed in a rotationally movable manner.
  • the printed circuit board 10 which may also be referred to as the printed circuit board 10, is subdivided into a main section 80, a secondary section 82 and a web section 84 connecting the secondary section 80 to the main section 80. This division of the printed circuit board 10 can be seen particularly well in Figures 2 and 3.
  • the auxiliary section 82 receives the sensor 11.
  • the sensor 11 is connected to the two conductor tracks of the side portion 82 via the web portion 84 to the main portion 80 with a control or evaluation device to be provided there.
  • the conductor tracks and the evaluation or control device is not shown in simplified form in Figures 2 to 7.
  • the printed circuit board 10 in the region of its main portion 80 mounting holes 86, with which the printed circuit board 10 can be attached to a heating block, such as the heating block 100, in particular there to the Schublock stresses 102.
  • the side portion 82 forms here with its web portion 84 together a finger portion which extends from the main portion 80 of.
  • This finger portion and thus the secondary portion 82 is used with the sensor 11 in the measuring receptacle 110 'to receive there signals from the magnetic wheel or rotary body 20 with magnetic disk 23 and forward via the web portion 84 to the main portion 80 for further evaluation.
  • the sensor 11 can be preassembled or pre-equipped directly on the board 0 and can be arranged when attaching the board directly to the desired position, namely in the measuring receptacle 110 '. Any inaccuracies can help to compensate for an elasticity of the finger portion, in particular of the web portion 84.
  • the embodiment of Figure 8 shows a printed circuit board 810 having a main portion 880, one end of which is shown open. Furthermore, a secondary section 882 is provided, which is connected via a web section 884 to the main section 880. On the secondary section 882, two conductor tracks 888 are indicated, which connect the sensor 81 to the main section 880.
  • the printed conductors 888 run graphically on the main section 880, as it does not depend on the specific formation of a control or evaluation unit or the like to be connected thereto.
  • the minor portion 882 together with the land portion 884, forms a finger-like extending finger portion.
  • This finger portion has been created by forming two cutouts 890 in the printed circuit board 810.
  • the main section 880 accordingly also forms a main plane from which the sensor 811, as indicated by the movement arrows 892, can be moved out.
  • the embodiment of Figure 9 shows a control board 910 schematically. There, a secondary section 982 is provided, which is completely surrounded by a main section 980.
  • a connection between the secondary section 982 and the main section 980 consists of two spiral web sections 984. From the sensor 911, two conductor tracks 988 lead via one of the web section 984 to the main section 980. For reasons of clarity, the two conductor tracks 988 are shown on the web section 984 drawn a line.
  • the spiral embodiment of the web portions 984 shown results from corresponding free cuts 990, which are drawn hatched for the sake of clarity.
  • the hatching should show no cut surface here.
  • the embodiment of FIG. 9 provides a flexible configuration for the secondary section 982. This can in particular be moved vertically to a plane of the main section 980. Furthermore, tilting of the auxiliary section 982 is also possible.
  • FIG. 10 shows a labyrinth-like web section 784.
  • This labyrinthine land portion 784 connects the minor portion 782 to the major portion 780.
  • Two conductive traces extend from the sensor 711 via a land portion 784 to the major portion 780. Again, the conductive traces 788 are shown on the land portion 784 by a single line.
  • the labyrinthine configuration of the web portions 784 is achieved by free cuts 790, which are drawn here hatched for the sake of clarity.
  • FIG. 1 shows schematically a test circuit 40 on a finger portion 42, which may be composed of a minor portion and a land portion.
  • a secondary section with another web section is also suitable, in particular in a manner as shown in FIGS. 9 and 10.
  • the finger portion 42 may also be composed of a minor portion 82 and a land portion 84 as shown in Figure 2, or a minor portion 882 and a land portion 884 as shown in Figure 8.
  • the finger portion 42 has a sensor 44, which may correspond, for example, the sensor 11 of Figure 2. It is also possible to provide another sensor which, for example, carries out a temperature evaluation or a pressure evaluation.
  • a first control line 46 is provided which, for example, can forward a positive direct current to the sensor 44 for evaluation.
  • a second control line 48 is provided, which is not directly connected to the sensor 44. Rather, it is connected to a second contact point 52, which may be provided with a spring 54.
  • a current flows via the control line 46 to the sensor 44 and from there back via a first contact point 50, which is arranged below the sensor 44 and only in the figure 12 is shown.
  • the current then flows via the first mating contact point 56 onto a heating block 60 or the like to the second mating contact point 58 and from there to the second contact point 52 finally to the second control line 48. In this way, a corresponding control circuit can be closed. However, if a contact, in particular between the first contact point 50 and the first contact point 56, not closed, no current can flow and this can be detected as a fault.
  • a first and second control current 62 and 64 are shown, which flow as intended in the first control line 46 and second control line 48, respectively.
  • a previous second control current 66 is also shown with an arrow, which is crossed out, to explain that a corresponding return directly from the sensor 44 no longer exists and instead the second control line 48 is used as shown, in which the second control current 64 flows.
  • the first and second control current 62, 64 can flow. In particular, any incorrect positioning can be detected thereby, because then at least one of the contact pairs does not touch and accordingly the contact is not present and no current can flow.
  • a flow detection ie detection of the flow rate or flow rate without additional components, such as connecting elements such as strands, plugs, potting compound and / or interfaces, can thereby be created on a control unit.
  • SMD Hall IC By using a SMD Hall IC, it can be soldered directly to the printed circuit board or printed circuit board, avoiding connectors such as connectors and leads.
  • the Hall IC For the Hall IC to detect the magnetic field changes of the corresponding rotating magnetic wheel, there must be an exact spatial proximity between the two components, namely between the magnetic wheel and the Hall IC.
  • this arrangement can be created without additional components.
  • the position of the Hall IC has been moved in the immediate vicinity of the magnetic wheel over the prior art by one or more elastic webs on the printed circuit board. In particular, this also cost savings can be achieved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Combinations Of Printed Boards (AREA)
  • Control Of Resistance Heating (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

La présente invention concerne une plaque à circuit imprimé électronique (10) qui sert à commander et/ou à surveiller un appareil de chauffe comportant un bloc de chauffe et servant à chauffer un milieu liquide. Cette plaque à circuit imprimé électronique (10) comprend une plaque de base comprenant un segment principal (80), un segment secondaire (82) et au moins un segment de liaison (84) élastique reliant le segment secondaire (82) au segment principal (80). Le segment principal (80) est conçu pour être fixé sur ou contre le bloc de chauffe. Sur la plaque de base, au moins une piste conductrice de liaison s'étend du segment principal (80) au segment secondaire (82) en passant par le segment de liaison (84). Le segment principal (80), le segment secondaire (82) et le segment de liaison (84) se trouvent dans un plan principal commun lorsqu'ils sont à l'état non contraint. Le segment secondaire (82) est pourvu d'au moins un élément capteur (11) servant à relever au moins une grandeur de mesure du bloc de chauffe. Le segment secondaire (82) est relié au segment principal (80) par l'intermédiaire du segment de liaison (84) de manière tellement élastique que le segment secondaire (82) peut être sorti par flexion du plan principal sans endommager la piste conductrice de liaison, par flexion du segment de liaison (84), pour adapter ainsi la position et/ou l'orientation de l'élément capteur (11) contre le bloc de chauffe.
PCT/EP2013/001955 2012-07-06 2013-07-03 Plaque de commande pour un chauffe-eau instantané WO2014005707A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012013347.2 2012-07-06
DE102012013347.2A DE102012013347B4 (de) 2012-07-06 2012-07-06 Elektronische Leiterplatine und Verfahren zum Installieren eines Sensors an einem Heizblock für einen Durchlauferhitzer

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WO2014005707A1 true WO2014005707A1 (fr) 2014-01-09
WO2014005707A9 WO2014005707A9 (fr) 2014-05-01
WO2014005707A4 WO2014005707A4 (fr) 2014-06-19

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FR3113113A1 (fr) * 2020-07-29 2022-02-04 Valeo Systemes Thermiques Dispositif de chauffage électrique d’un liquide caloporteur
DE102020123219A1 (de) * 2020-09-04 2022-03-10 Stiebel Eltron Gmbh & Co. Kg Lagerkomponente für Durchflusssensor, Durchflussmesseinheit und Haustechnikgerät
EP4009741A1 (fr) * 2020-12-03 2022-06-08 Bleckmann GmbH & Co. KG Composant de système de chauffage permettant de détecter une première et une seconde températures

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DE202013012074U1 (de) 2015-06-03
DE102012013347A1 (de) 2014-01-09
WO2014005707A4 (fr) 2014-06-19
WO2014005707A9 (fr) 2014-05-01

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