EP2547386A2 - Dispositif destiné à chauffer des fluides en écoulement et procédé de fabrication correspondant - Google Patents

Dispositif destiné à chauffer des fluides en écoulement et procédé de fabrication correspondant

Info

Publication number
EP2547386A2
EP2547386A2 EP11719447A EP11719447A EP2547386A2 EP 2547386 A2 EP2547386 A2 EP 2547386A2 EP 11719447 A EP11719447 A EP 11719447A EP 11719447 A EP11719447 A EP 11719447A EP 2547386 A2 EP2547386 A2 EP 2547386A2
Authority
EP
European Patent Office
Prior art keywords
fluid
heating element
surface heating
housing
fluid housing
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Withdrawn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
EP11719447A
Other languages
German (de)
English (en)
Inventor
Michael Balluff
Holger Teschner
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.)
Barkey GmbH and Co KG
Original Assignee
Barkey GmbH and 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
Priority claimed from DE201010002895 external-priority patent/DE102010002895A1/de
Application filed by Barkey GmbH and Co KG filed Critical Barkey GmbH and Co KG
Publication of EP2547386A2 publication Critical patent/EP2547386A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/44—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit
    • A61M2205/127—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit with provisions for heating or cooling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2207/00—Methods of manufacture, assembly or production
    • 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
    • F24H1/101—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 using electric energy supply
    • F24H1/102—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 using electric energy supply with resistance
    • 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
    • H05K1/03—Use of materials for the substrate
    • H05K1/0393—Flexible materials
    • 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
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09218—Conductive traces
    • H05K2201/09263—Meander
    • 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
    • H05K2203/11—Treatments characterised by their effect, e.g. heating, cooling, roughening
    • H05K2203/1115—Resistance heating, e.g. by current through the PCB conductors or through a metallic mask
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating

Definitions

  • the invention relates to a device for heating flowing fluids, in particular intravenous fluids, having a fluid housing containing at least one fluid channel, through which the fluid from an inlet of the fluid housing to an outlet thereof can be guided, with a heating unit containing at least one electric surface heating element for heating the fluid flowing through the fluid channel and having a temperature control unit containing at least one temperature sensor arranged on the surface heating element, that the surface heating element is disposed within the fluid housing, wherein the surface heating element at least partially forms a wall of the fluid channel.
  • the invention relates to a method for producing a ceremoniesnMapimplantations, which is used for heating of flowing fluids.
  • a device for heating of flowing fluids which has a fluid housing in which a fluid channel is formed, through which the fluid is passed from an inlet of the fluid housing to an outlet thereof.
  • a heating unit for heating the fluid conducted through the fluid housing, a heating unit is provided, which rests with an electric surface heating element on an outer side of the fluid channel or the fluid housing.
  • the surface heating element is designed as an electrical resistance heater, which encompasses a rigid printed circuit board, on whose flat side a metallic heating conductor runs.
  • This Schuleiterbahn runs - as the fluid channel - meandering; so that an improved heat transfer is ensured by covering the Schuleiterbahn and the fluid channel.
  • a device for heating of flowing fluids which provides a fluid housing with a serpentine (meandering) or spiral fluid channel extending from an end inlet of the fluid housing to an opposite end outlet of the fluid housing.
  • a heating unit are provided, which are arranged on opposite flat sides of the fluid housing.
  • electrical surface heating elements are arranged, which have a rigid printed circuit board on which Schuleiterbahnen are applied by means of photolithography.
  • Temperature sensors can furthermore be arranged on the circuit board for measuring the fluid temperature, so that in conjunction with a temperature control unit, the fluid temperature can be regulated to a predetermined temperature value.
  • a device for heating of flowing fluids in which a rigid surface heating element is arranged with a plurality of Bankleiterbahnen within a fluid housing.
  • ribs extending transversely to the direction of flow of the fluid are arranged so that a spiral-shaped fluid channel is formed between an inlet and an outlet of the fluid housing, in which the fluid is guided spirally around the surface heating element.
  • the surface heating element is arranged inside the fluid housing, heat can be transferred directly to the fluid flowing inside the fluid housing.
  • a disadvantage of the known device is that the fluid experiences a relatively large pressure drop within the fluid housing, which is undesirable in many cases.
  • Another disadvantage is that high shear forces act on the fluid and can settle in the relatively thin fluid channels gas bubbles that impede the flow.
  • Object of the present invention is to develop a device for heating of flowing fluids and a surface heating element such that in a simple way improves the heat input into the fluid housing and a homogeneous and efficient heating of the fluid is ensured.
  • the invention in conjunction with the preamble of claim 1, characterized in that extends between the inlet of the fluid housing and the outlet of the fluid housing at least one linear fluid channel.
  • an electric surface heating element is disposed within a fluid housing carrying the fluid and ensures direct heat introduction into the fluid.
  • the device according to the invention enables a homogeneous and efficient heating of the fluid.
  • the fact that the fluid channels extend linearly between an inlet and an outlet of the fluid housing, there is a relatively low pressure drop of the fluid or the shearing forces of the fluid are low. There is a slight damage to the fluid, in particular the mechanical hemolysis, which is particularly advantageous for dialysis applications with high flow rates.
  • the fluid channels are relatively short and wide between the inlet and the outlet of the fluid housing. A deflection of the fluid within the fluid housing is not required.
  • the surface heating element is designed as an interface which separates a first planar fluid channel from a second planar fluid channel.
  • Corresponding flat sides of the surface heating element at the same time form channel walls of the first planar fluid channel or of the second planar fluid channel.
  • the interface extends in an opening plane of the two fluid housing halves.
  • the fluid channels have a width that matches the width of the fluid housing halves.
  • the fluid channels generally extend parallel to an imaginary line connecting the inlet and the outlet.
  • a number of spacers are arranged on a surface heating element facing the inside of the fluid housing, where a corresponding flat side of the surface heating element comes to rest.
  • the spacers are arranged such that a flexible surface heating element is arranged substantially flat to form at least one flat fluid channel.
  • a defined planar fluid channel is thus created, which has a constant thickness.
  • the surface heating element is integrally connected to a contact strip, which extends outside of the fluid housing along a longitudinal side thereof.
  • the housing halves are preferably integrally connected with the inclusion of the surface heating element, wherein, for example, a sealing adhesive may be provided in the region of the contact strips.
  • a hermetically sealed fluid housing can thereby be created.
  • a cassette formed from the fluid housing and the surface heating element can be inserted in a slot of a control unit.
  • the contact rail is latchingly connected to corresponding contact elements of the control unit.
  • the fluid housing is arranged substantially outside of the control unit, so that it is visible from the outside. This can advantageously flow disturbances, such as the formation of gas bubbles, can be detected.
  • the slot of the control device is preferably arranged in the vertical direction, so that in the insertion position, the cassette is arranged upright and the fluid flows through the cassette in the vertical direction from bottom to top.
  • the flexible printed circuit board of the ceremoniesnbuildettis is formed as a plastic film on which the Edelleiterbahnen be applied by laminating and then structured by photolithography or by lasers.
  • the plastic film may for example be formed as a temperature-resistant polyimide film having a thickness in the range between 25 pm and 125 pm.
  • the Schuleiterbahnen are made of a biocompatible conductor material, such as aluminum material, aluminum alloy, gold material or a stainless steel material, so that a biocompatibility is given.
  • the heating conductors can also be made of a copper material or another resistor. terial, which is preferably coated with a biocompatible insulation layer.
  • At least one inside of the fluid housing is profiled in such a way that at least one fluid channel is formed which extends from a first end of the fluid housing having the inlet to a second end having the outlet of the fluid housing substantially along a main flow direction.
  • the substantially rectilinear course of the fluid channel in comparison to a meandering fluid channel allows substantially reduced damage to the fluid, which may be formed, for example, as blood, plasma or cell cultures.
  • the fluid is deflected only in the region of the inlet and the outlet, while it is guided in a substantially straight line in an intermediate region. A pressure drop of the fluid within the fluid housing is thus relatively low.
  • the rectilinear fluid channel structure according to the invention has a favorable effect.
  • the inlet and / or outlet of the fluid housing are located on a first side thereof, wherein an axis of the inlet or of the outlet extends perpendicular to the fluid channel. A deflection of the fluid flow thus takes place only in an inlet or outlet region of the fluid housing, while in a main region of the fluid housing a substantially rectilinear fluid flow is ensured.
  • At least one elongated rib is formed on an inner side of the fluid housing, which forms a partition between two adjacent fluid channels.
  • the fluid channel is determined only by the shape of the fluid housing, wherein a flat side of the surface heating element forms a wall of the fluid channel.
  • a fluid catalytic converter The surface heating element can act directly on the fluid flowing through the fluid channel.
  • a plurality of fluid channels are arranged next to one another, with a width of the fluid channels starting from the inlet and / or the outlet decreasing transversely to the main flow direction.
  • fluid channels disposed relatively close to the narrow side wall having the inlet and / or outlet have a larger cross-section than fluid channels disposed away from the same narrow side wall.
  • this ensures a flow velocity of the fluid through the fluid channels that is essentially the same across the fluid channels.
  • the duration of action on the fluid via the fluid channel distribution is also advantageous, so that homogeneous heating of the fluid is ensured.
  • the surface heating element in an intermediate layer spaced to a first inner side of the fluid housing and a second inner side of the same floating.
  • one end face of the surface heating element is fixedly connected to the fluid housing, while the remaining portion of the surface heating element is guided by the ribs of the fluid housing is guided substantially flat.
  • a ripple of the surface heating due to the fluid flow can thus be safely avoided.
  • the ribs are arranged in alignment with each other such that free end faces of the opposite ribs limit the surface heating element in its transverse movement and thus ensure a secure guidance of the flexible surface heating element.
  • the inlet and the outlet are arranged on a first side of the fluid housing and a fixedly connected to the surface heating element contact strip on a second side of the fluid housing.
  • the contact strip extends outside of the fluid housing and allows pluggable contacting of the surface heating element to a terminal strip of a control device.
  • the fluid housing can be inserted into a slot of a control device and mechanically and electrically connected to the control device via the contact strip.
  • the heating unit can thus be spent easy to use in an operating position or removed from an operating position. This is even more important when the heating unit is a disposable product with a limited life.
  • the surface heating element has on a flat side at least two different contacts associated Schumacherabitese, which are arranged one behind the other in the main flow direction.
  • different areas of the fluid channels can advantageously be heated differently in order to allow a heating regulation determined by the requirements.
  • provided with Edelleiterbahnen plastic film may be provided with a biocompatible protective layer which is temperature resistant and suitable to transfer the heat generated by the Schuleiterbahnen to the fluid.
  • the inside of the fluid housing may be formed profiled, so that there is a meandering or spiral fluid channel.
  • the surface heating element can be arranged flat.
  • the surface heating element can also be profiled, for example wave-shaped or zigzag-shaped, so that there is an increased heat transfer surface.
  • the transmitted heating power can thus be increased or the device constructed more compact.
  • a quotient of effective heat transfer surface of the surface heating element to a projected in a longitudinal center plane of the fluid housing surface of the surface element is greater than 1.
  • the heat transfer relative to the surface of the fluid housing can be substantially increased.
  • the surface heating element or the fluid channel may, for example, extend in a wave-shaped manner from the inlet to the outlet of the fluid housing, wherein preferably the width of the fluid housing is utilized approximately to the full extent.
  • the wavy configuration of the surface heating element with a relatively small bending radius allows a compact design of the device with a relatively high efficiency based on the surface of the fluid housing.
  • the surface heating element can optionally have or can be switched offêtn Technologiessegmente (Heizleiterabête), so that depending on the application, an elevated temperature or a lower temperature of the fluid can be controlled.
  • a number of temperature sensors are arranged on the flexible printed circuit board, so that an optimal temperature control of the fluid can take place.
  • a sensor unit for determining a flow velocity of the fluid can be arranged on the flexible printed circuit board, which further improves the control result.
  • a regulating the heating of the fluid control unit is arranged in a separate control device and electrically connected via contacts of the surface heating element.
  • a plurality of surface heating elements can be integrated in a fluid housing, with fluid channels extending between adjacent surface heating elements.
  • the surface heating elements or the fluid channels are thus arranged in the manner of a sandwich construction, which allows a compact design.
  • the surface heating elements can be controlled differently, so that different setpoint temperatures within the fluid housing can be set in a simple manner.
  • a defined offset of the arranged on two flat sides Edelleiterbahnen a ceremoniesnfilterettis is generated to ensure a homogeneous heat distribution in the main flow direction. An unwanted temperature accumulation can be safely avoided.
  • the electric surface heating element has a flexible printed circuit board, on the at least one flat side of which a metallic heating conductor track (resistance conductor track) for generating the heat is arranged.
  • the flexible printed circuit board can be arranged within the fluid housing so that a desired fluid channel structure is formed.
  • the flexible circuit board may be arranged on the inside on a wall of the fluid housing and / or between opposite inner sides of the fluid housing at a distance from the wall of the fluid housing.
  • the flexible circuit board can thus contribute to the shaping of the fluid channel, so that different fluid channel structures can be formed in a simple manner. In particular, a heat transfer factor based on a longitudinal extent of the fluid housing can be increased.
  • the flexible printed circuit board has a relatively low thermal capacity, which improves the temperature controllability. Due to the homogeneous temperature distribution in the surface heating element results in an increased heat input at low operating temperature of the surface heating element.
  • the Kirsen different flat sides of the ceremoniesncopy institutes in the Clearre- ckungsebene theassincopy institutes offset from each other, so that over the surface of the mecanicncopy institutes or the plastic film uniform heat is generated, which, however, is emitted to both sides.
  • this can be done a better and homogeneous heat input.
  • this causes an improved surface utilization of the plastic film with Schuleiterbahnen.
  • a development of the surface heating element a plurality of independently controllable heating conductor paths are arranged along the fluid channel in the flow direction of the fluid, so that a plurality of heating conductor sections are formed along the fluid channel.
  • the heat input by means of, for example, alternating and / or periodic driving of the different Schuleiterbahnabête done.
  • the predetermined heat input with a lower momentary current load of the Schuleiterbahnen done.
  • the method according to the invention is characterized in connection with the preamble of claim 24, by the following steps: applying an electrically conductive layer to one and / or two flat sides of a carrier to form a semi-finished product which is provided on a roll; sequentially patterning heating conductor tracks on roller sections of the semifinished product by means of lasers or by photolithographic means, while a roller section of the semifinished product is unwound from one roller and wound up on another roller; sequentially loading roll sections of the semifinished product with a number of sensor elements; Cutting the roll sections of the semi-finished product into a format of the surface heating elements while the roll is being unwound; Covering the surface heating elements with a biocompatible material and / or with an electrical insulating material and / or with a mechanical protective material and / or with a thermally conductive layer.
  • the particular advantage of the method according to the invention is that processing steps are provided which are applicable to a semifinished product provided as a roll.
  • the application of an electrically conductive layer on a carrier can be carried out by a roll-roller method, wherein on the one hand the flexible carrier and on the other hand, the electrically conductive layer each unrolled and connected, for example by lamination or glued together and then rolled up again to a semifinished product can be.
  • By winding and unwinding can sequentially structured on the semi-finished heating conductor or be fitted with a number of sensors it ⁇ follow.
  • the Format of the surface heating element are formed.
  • the covering or coating of the surface heating element with a biocompatible material and / or with an electrical insulating material and / or with a mechanical protective material and / or with a thermally conductive layer can be carried out prior to separation on the roll or after separation on the thus isolated surface heating elements ,
  • the method according to the invention enables cost-effective and reliable production of surface heating elements.
  • heating conductor tracks are structured on both sides of the semifinished product such that they are arranged in overlapping relation to one another or side by side in projection to the flexible carrier.
  • the staggered structuring can be carried out in a simple manner at the same time on both flat sides during the unrolling process of the semifinished product, the roller movement being stopped during the application of the processing step.
  • FIG. 1 shows a schematic plan view of a device according to the invention according to a first embodiment with a fluid housing, within which an electric surface heating element is shown in dashed lines,
  • FIG. 2 shows an interior view of a half-part housing part of the fluid housing with guide walls projecting from an inside thereof for forming a fluid channel
  • FIG. 3 shows a section along the line III-III in Figure 1
  • FIG. 4 shows a longitudinal section corresponding to FIG. 3 through a device according to a second embodiment
  • FIG. 5 is a plan view of a device according to a third embodiment, wherein an electric surface heating element is formed segmented
  • FIG. 6 shows a partial section through a fluid housing with a plurality of
  • FIG. 7 shows a longitudinal section through a device according to the invention according to a further embodiment
  • FIG. 8 shows an exploded view of a fluid housing according to a further embodiment
  • FIG 9 is a plan view of a surface heating element, which is used in a fluid housing according to Figure 8,
  • FIG. 10 shows a bottom view of the surface heating element according to FIG. 9,
  • FIG. 1 1 shows a schematic cross section through the fluid housing with the sectional surface heating element according to section line XI-XI in FIG. 9,
  • FIG. 12a shows a schematic representation of a semifinished product provided on a roll, which is provided with a photosensitive layer and a mask, in a first working step
  • FIG. 12b shows a cross section of a detail from FIG. 12a of the semifinished product according to FIG.
  • FIG. 12c shows a cross section through the semifinished product according to FIG. 12b after an etching process
  • FIG. 12d shows a schematic cross section through the semifinished product according to FIG. 12c after removal of the photosensitive layer from the now exposed heating conductor tracks
  • FIG. 13 shows a schematic cross section through a cylindrical fluid housing with a spiral surface heating element
  • Figure 14 is a schematic cross section through a rectangular in cross-section
  • Fluid housing with spiral surface heating element a schematic plan view of an inventive device according to another embodiment with a fluid housing and a longitudinally projecting contact portion of a surface heating element,
  • FIG. 16 is a plan view of the surface heating element used in FIG. 15,
  • Figure 17 is a partial cross section through the fluid housing
  • Figure 18 is a schematic representation of the device according to the invention according to Figure 15 in a plug-in position, in which the contact portion of the surface heating element is arranged in a receiving slot of a control device.
  • a device according to the invention for heating of flowing fluids is preferably used for intravenous fluids (IV fluids).
  • the device according to the invention serves for heating flowing blood or an infusion liquid.
  • the device according to the invention allows heating of the liquid while flowing from a liquid storage to a person.
  • the device essentially comprises a fluid housing 1, a flexible electric heating unit 2 and a temperature control unit 3.
  • the heating unit 2 has a flexible electric surface heating element 4 for heating the fluid flowing through a fluid channel 5 of the device, which is positioned within the fluid housing 1.
  • the working as a resistance heating flexible electric surface heating element 4 is arranged substantially flat and in a middle position between a first inner side 6 and a second inner side 7 of the fluid housing 1.
  • the surface heating element 4 divides the relatively flat and rectangular fluid housing 1 into two halves, wherein a first fluid channel section 8 extends between the first inner side 6 and the surface heating element 4 and a second fluid channel section 9 between the second inner side 7 and the surface heating element 4, that in the flow direction
  • a spiral-shaped fluid channel 5 forms from an inlet 10 arranged at the end side of the fluid housing 1 to an outlet 11 arranged opposite the end face of the fluid housing 1.
  • the surface heating element 4 preferably lies centrally between the first Inner side 6 and the second inner side 7 is arranged, the first fluid channel sections 8 and the second Fluidkanalabschnit- te 9, each extending on both sides of a longitudinal center plane L of the fluid housing 1, an equal cross-section.
  • the surface heating element 4 is in each case at the edges of guide walls 12 of one of the two trough-shaped housing halves 13, 13 'of the fluid housing 1 and is thus stabilizingly mounted between the housing halves 13 and 13' of the fluid housing 1.
  • the fluid channel 5 is thus substantially rectangular in cross section formed, wherein a surface of theinstitunheizelements 4 a first side wall 14, the inner side 6 and 7 of the housing halves 13, 13 'form an opposite second side wall 15, by the integrally formed with the housing halves 13, 13' and formed as a third side wall guide walls 12 are connected to each other.
  • the housing halves 13, 13 ' are thus formed profiled on the inside.
  • the surface heating element 4 has twomaschine istszonne 16 which protrude the front side of the fluid housing 1 to the outside, so that the surface heating element 4 can be contacted with an electrical voltage source.
  • the surface heating element 4 has a flexible printed circuit board 19, on the two flat sides 17, a metallic Schuleiterbahn 18 is applied.
  • the flexible printed circuit board 19 is preferably formed as a plastic film, for example as a polyimide film, which may have a thickness of 25 pm to 100 pm.
  • the heating conductors 18 may be applied to the plastic film by lamination or photolithography by etching or by screen printing.
  • a metal-laminated plastic film may be provided, on which the heating conductor tracks are formed photolithographically.
  • the plastic film may consist of an elastomer (silicone rubber film) or thermoplastic material.
  • the plastic film serving as the carrier layer can consist of a polyimide (Kapton), polyester or preferably transparent myolar.
  • the heating conductor can consist of an aluminum material or aluminum alloy, gold or stainless steel material, so that a direct contact with the fluid is made biocompatible.
  • the heating conductor can also consist of a copper material, wherein at least this is provided with a further biocompatible protective layer to prevent a toxicological effect of the copper.
  • the Schuleiterbahnen of a resistive material or resistive alloy for example, copper alloy, copper-nickel alloy (Konstantan), etc., exist.
  • the temperature control unit 3 may be arranged according to a variant of the invention on the flexible printed circuit board 19. It consists on the one hand of a control unit 20, which includes a microprocessor or a microcontroller. Furthermore, it comprises a plurality of temperature sensors, wherein a first temperature sensor 21 in the region of the inlet 10, a second temperature sensor 22 in the region of the outlet 11 and a third temperature sensor 23 for determining an excess temperature at any point of the printed circuit board 19 is arranged. Optionally, only the two Temperature sensors 21, 22 may be provided.
  • the circuit board 19 may be equipped with a sensor, not shown, for determining a flow rate of the fluid.
  • the temperature control of the heating thus takes place substantially within the fluid housing 1, wherein only via the Kunststofftechnikszungen 16 is given an electrical connection to an external voltage source.
  • the fluid housing 1 may also be designed as a cassette intended for single use, wherein on the flexible printed circuit board 19, only the temperature sensors or the flow rate sensor is arranged.
  • the flow rate can also be carried out by evaluating the measured values provided by the temperature sensors. As a result, at least the information can be determined whether the fluid flows or does not flow.
  • the control unit 20 for temperature control is located outside of the fluid housing 1, wherein correspondingly formed Kunststofftechnikszungen 16 allow electrical connection to the arranged on the flexible circuit board 19 sensors.
  • a fluid housing 31 not only a fluid housing 31 but also a surface heating element 34 integrated in it can be profiled.
  • Inner sides 36, 37 of the fluid housing 31 and the surface heating element 34 are wave-shaped, so that the fluid after entry into the fluid housing 31 at the inlet 10 alternately between two opposite outer flat sides 32 of the fluid housing 31 in the direction of the opposite outlet 1 1 is promoted.
  • the wave-shaped fluid passage 35 thus formed has a length which is greater by a multiple than a length of the extending between the inlet 10 and the outlet 1 1 the flat side 32 of the fluid housing thereby 31 is advantageously a comparatively ⁇ as improved heat transfer from the surface heating 34 allows in the fluid.
  • the surface heating element 34 is formed relatively thin, so that it allows a relatively compact design.
  • the wavy surface heating element 34 has a relatively small bending radius at the respective tips.
  • the ratio of the total area of the surface heating element 34 in comparison to the area of the surface heating element 34 projected onto the longitudinal center plane L of the fluid housing 1 is greater than 1.
  • An area fraction of the surface heating element 34 which extends transversely to the fluid housing 31 or transversely to the surface heating element 34 is Thus, larger than a surface portion which extends along the fluid housing 31 and surface heating element 34.
  • only the surface heating element can be formed profiled, while inner sides of the fluid housing are substantially planar.
  • the surface heating element and / or inner sides of the fluid housing may also be arranged in a zigzag shape. It is essential that the fluid undergoes a change in direction transversely to the longitudinal center plane L and / or in the direction of the longitudinal center plane L.
  • a surface heating element 44 can have a number of surface heating segments 45, 45 'which can optionally be switched on and / or off, so that, depending on the application or the required heating power, some or all of the heating conductor paths 18 be energized.
  • a first legislativenterrorismsegment 45 have a first Schuleiterbahn 46 which extends on a relative to a transverse center plane Q of the fluid housing 41 first side of the printed circuit board 19 and which can be supplied via a firstmaschineticianszunge 43 with electrical voltage.
  • the secondmonynitzsegment 45 'with a second Schuleiterbahn 46 * is arranged, which is powered by a secondmaschinetechnikszunge 43. Since the fluid channel - as in the first embodiment according to the figures 1 to 3 extends helically around the surface heating element 44, also can when operating only a singleinstitunitzsegmentes 45, 45 'to ensure uniform heating of the fluid.
  • the fluid housing is transparent.
  • a fluid housing V can be designed in sandwich construction, wherein alternately a layer of surface heating elements 4, 4 ', 4 "and fluid channels 5 are arranged transversely to the longitudinal extent of the fluid housing a layered construction, wherein fluid channel layers 5 and surface heating element layers 4 ', 4 ", 4"' are arranged alternately, wherein the heating element layers 4 ', 4 ", 4"' may optionally be equipped with temperature sensors 3, a plurality of layers of area heating elements 4 ', 4 ", 4'” are provided, between which the layers of fluid channels 5 extend.
  • the orientation of the fluid channels 5 can be oriented in and / or across the inlet 10 or outlet 11 of the fluid housing 1 be arranged.
  • two layers of fluid channels can also be arranged between two layers of surface heating elements.
  • a first layer of legislativenfilter instituten a first layer of fluid channels is arranged, wherein the fluid flows in a first direction.
  • Adjacent to this first layer of fluid channels is a second layer of fluid channels through which fluid flows in an opposite second direction.
  • the inlet 10 and the outlet 11 may also be arranged on a common end face of a fluid housing 51.
  • the fluid channel 5 can split at the inlet 10 into two partial fluid channels 5.1, 5.2, which are separated from one another by means of a surface heating element 54 '.
  • the fluid flow is reversed or deflected via at least two partial fluid channels 5.3, 5.4, which are separated by another surface heating element 54 " 11.
  • a partition wall 55 is arranged, which optionally can be designed as a surface heating element. 54 "are preferably flat. Alternatively, they can also be arranged undulating in the flow direction.
  • more than two partial fluid channels may be provided in one direction.
  • the devices according to the invention advantageously allow a direct heat-conducting connection of the surface heating element with the fluid in a working state of the device. It is understood that the features mentioned above can be used individually or in combination in any combination. The described embodiments are not to be understood as exhaustive enumeration, but rather have exemplary character for the description of the invention.
  • a fluid housing 51 and a flexible area heating element 52 designed as a heating unit are provided, the area heating element 52 essentially being arranged between an upper housing half 51 'of the fluid housing 51 and a lower housing Case half 51 "of the same ben is arranged.
  • the upper housing half 51' and the lower housing half 51" each have a half-shell-shaped at a first end 53 and at an opposite second end 54 Stub neck 55 and 56 to form an inlet 57 and outlet 58 for the fluid in the assembled state.
  • the inlet 57 and the outlet 58 are thus formed on a first narrow side wall 59 (first side) of the fluid housing 51, wherein they protrude laterally from the first end 53 and second end 54 of the fluid housing 51.
  • the upper housing half 51 'and the lower housing half 51 each have a plurality of elongated ribs 60 and 61, which are integrally formed on an inner side 62 and 63 of the housing half 51' and 51".
  • the ribs 60, 61 are each formed elongated. In the present embodiment, seven ribs 60, 61 are provided, which form a partition for fluid channels 64, 64 ', 64 "and thus define a profile of the fluid channels 64, 64', 64".
  • the ribs 60, 61 are substantially rectilinear and extend from the first end 53 to the second end 54 of the fluid housing 51.
  • Upper and lower fluid channels 64, 64 ', 64' are aligned with each other, with the surface heater 52 separating the upper and lower fluid channels 64, 64 ', 64 "in an intermediate plane between the upper half 50' and the lower half 51". Free end faces of opposite ribs 60 of the upper half of the housing 51 'and ribs 61 of the lower half of the housing 51 "delimit the surface heating element 52 in a line section 65.
  • the surface heating element 52 is floatingly mounted between the upper half of the housing 51' and the lower half of the housing 51"
  • Surface heating element 52 is mechanically fastened on one end face thereof to the upper housing half 51 'and / or the lower housing half 51 "
  • the opposite ribs 60, 61 guide the surface heating element 52 in the preferably middle intermediate layer and prevent the flexible surface heating element 52 from swelling due to the fluid flow .
  • the surface heating element 52 is formed as a flexible printed circuit board and has a Schuleiterbahnabêt 66 and an edge-side contact strip 67.
  • the contact strip 67 is arranged on a second narrow side wall 59 '(second side) of the surface heating element 52.
  • the Schumacherabites 66 is disposed within the Fluidgephaseu- 51, while the integrally connected to the Bankleiterbahnabrough 66 contact strip 67 is disposed outside of the fluid housing 51 and for mechanical and / or electrical contact with a terminal block, not shown, which is disposed within a slot of a control device is.
  • the surface heating element 52 has a number of electrically conductive heating conductor paths 70 on a first flat side 68 and on a second flat side 69, respectively.
  • the first flat side 68 and the second flat side 69 have two heat conductor regions 71, 72, which are arranged one behind the other in a main flow direction 73 of the fluid.
  • the first heat conductor region 71 has a first heat conductor trace 70 and covers substantially a first half (first heat conductor region 71) of the first flat side 68 or 69, wherein only the line sections 65 are exposed to bear the ribs 60, 61.
  • the heating conductor 70 of the first heating conductor region 71 leads to the contacts K1, K2 of the contact strip.
  • Schuleiterbahnen 70 'of the second Schuleiter Kunststoffes 72 lead to contacts K3, K4 of the contact strip 67th
  • connection 74 for a first temperature sensor in the region of the outlet 58 a connection 75 for a second temperature sensor, and in the region of end faces 76 of the surface heating element 52, a connection 77 for a further sensor and in a direction of the contact strip 67 towards an area a connection 78 for another sensor.
  • the further sensors can be designed as temperature sensors for determining an overtemperature or the like. They are like the temperature sensors at the terminals 74, 75, 76, 77, 78 contacted by preferably soldering. Another sensor may be formed, for example, as a flow rate sensor.
  • a further sensor may be designed as a fluid sensor, which during an initialization run during commissioning of the surface heating element 52 the presence or absence of a liquid in the fluid housing 51 is determined.
  • the ribs 60, 61 are curved in the end in the direction of the neck approaches 55 and 56, respectively. They form a bypass section, which at the first end 53 of the fluid housing 51 causes the fluid flowing to a center axis A of the fluid housing 51 to deflect in the main flow direction 73 or from the main flow direction 73 into an outlet 58 perpendicular to the center axis A.
  • an inlet collecting point 79 is formed, from which the fluid passages 64, 64 ', 64 "in the main flow direction 73 extend substantially rectilinearly, on an opposite side, namely at the second end 54 an outlet collecting point 80 is provided for the fluid, in which it collects from the fluid channels 64, 64 ', 64 "coming in direction reversal - as at the first end 53 of the fluid housing 51 - 90 ° to the outlet 58 is supplied.
  • An axis of the inlet 57 and an axis of the outlet 58 thus extend substantially perpendicular to the fluid channels 64, 64 ', 64 "or perpendicular to the main flow direction 73.
  • a width b, b ', b "of the fluid channels 64, 64', 64” is substantially constant in the main flow direction 73.
  • the width b, b ⁇ b "of the fluid channels 64, 64 ', 64" decreases from the first narrow side wall 59, at which the inlet 57 and the outlet 58 are located, in the direction of the contact strip 67.
  • one of the first narrow side wall 59 facing first fluid channel 64 is formed relatively wide with its width b.
  • Two adjacent fluid channels 64 ' have half the width b'.
  • Further fluid channels 64 ", which extend adjacent to one another up to the contact strip 67, have a comparatively reduced width b".
  • the heating conductor tracks extend substantially perpendicular to the main flow direction 73, so that the transverse direction Q runs essentially parallel to the main flow direction 73.
  • two Schuttingbahnabitese or two heating circuits are arranged on each flat side 68, 69 of the ceremoniesnfiliatas 52, which can be connected via different contacts K with a temperature control unit.
  • the temperature control unit is located externally in a control unit.
  • the heating circuits 66 may, for example, be connected in series or in parallel, which reduces the regulatory effort.
  • a rigid surface heating element may be formed with a rigid printed circuit board.
  • a base material for example, phenolic resin, epoxy resin could be used, which is optionally reinforced with paper or glass fiber fabric.
  • the flexible support 81 a polyimide film (for example, Kapton) having a thickness of between 12 ⁇ m and 125 ⁇ m is used.
  • a metal foil 82 (copper foil) is applied to the two flat sides of the carrier 81, preferably by gluing or laminating.
  • the metal foil 82 is applied to the carrier 81 from roller R1 to roller R2, wherein after application of the metal foil 82 to the carrier 81, a semifinished product wound on a roll R1, R2 is provided.
  • the metal layer can also be applied by rolling or electroplating or by sputtering onto the plastic carrier film.
  • a photosensitive layer 83 photoresist
  • the application takes place continuously during the unwinding of the semifinished product from the roll R1 and the winding thereof onto the roll R2.
  • a light source L is used to expose the photosensitive layer 83 through a mask M1, M2, which determines the later course of the heating conductor tracks 70, 70 '.
  • the exposure under the mask M1, M2 thus forms a masking of the photosensitive layer 83.
  • the development of the photosensitive layer 83 according to FIG. 12b takes place, wherein the photosensitive layer 83 is retained only in the regions in which the heating conductors 70, 70 'run.
  • the metal layer 82 can then be removed by etching in the areas between the resulting resist 83, see Figure 12c. Thereafter, in a further step, the photosensitive layer 83 is removed, in particular by rinsing, cleaning and subsequent drying, see FIG. 12d.
  • the structuring of the heating conductor tracks 70, 70 'can also be effected by means of lasers.
  • a solder paste can be applied to the terminals 74, 75, 76, 77, 78, so that the sensor elements are equipped by subsequent soldering (for example reflow soldering or by means of infrared radiation).
  • the abovementioned working steps can take place in the form of a roll-roll method, wherein the semi-finished product is unrolled from one roll R1 to the other roll R2 or vice versa. Only for carrying out the work step, the roller movement is stopped for a short time.
  • a cutting of roll sections 84 of the semifinished product is carried out, each of which contains a surface heating element 52. This can be done for example by a laser.
  • the cut and stocked semi-finished products can be provided with an additional protective layer of biocompatible material and / or electrical insulation material and / or mechanical protection material and / or with a thermally conductive layer.
  • the surface heating element 52 can now be connected with the same between the housing halves 51 'and 51 "with the same to form the heating unit. 2
  • the Schuleiterbahnen 70, 70 'of the flat sides 68, 69 may be arranged in projection on the extension plane E of the carrier 81 instead of side by side overlapping each other.
  • gases or any liquids can be used, for example, blood, plasma or infusions as medical or human or animal fluids, alternatively also cell cultures, which are used in laboratory technology.
  • cell cultures which are used in laboratory technology.
  • water or other liquids used in food technology can also be used.
  • the surface heating element 52 may also be provided only on a flat side 68 with Bankleiterbahnen.
  • the heating conductor track-free flat side is then preferably flat on an inner side of a housing half of the fluid housing 51.
  • the carrier 81 (carrier film) may also be coated with a thermally conductive full-surface layer, so that the temperature distribution over the surface of the surface heating element 52 is very homogeneous.
  • the surface heating element 52 is preferably provided with a fluid sensor, during an initialization run during commissioning of the sensor, heating unit or the surface heating element 52 or be detected at another appropriate time, whether a fluid or a liquid is in the system. As a result, for example, a plausibility check take place, which signals the operational readiness of the heating unit. During the initialization run, manufacturing tolerances of the resistance trace or the like can also be determined.
  • a capacitor may be used whose capacitance changes due to the changing dielectric constant depending on the humidity. The capacitor may preferably be formed by etching the metal layer 82, like the heating conductors.
  • the fluid sensor can be used in addition to the detection of the level also for detecting the flow or gas bubble detection.
  • a cylindrical fluid housing 91 in which a surface heating element 92 is arranged spirally wound.
  • the surface heating element 92 which is formed rectangular in the blank, is arranged wound transversely to a fluid id 93, wherein annular fluid channels 94 are formed, which are arranged in the fluid direction 93 parallel to each other.
  • annular fluid channels 94 are formed, which are arranged in the fluid direction 93 parallel to each other.
  • At an upstream end side of the fluid housing 91 is an inlet 95 and at a downstream end side of the fluid housing 91 is an outlet 96 for the fluid.
  • a contact strip 97 projects from the interior of the fluid housing 91 for contacting the heating conductor path applied to the surface heating element 92 with corresponding connections leading to a control device.
  • a rectangular or square fluid housing 101 may be provided, in which a surface heating element 102 is wound in a substantially angular manner to form parallel fluid channels 103, which are also substantially rectilinearly from an upstream end side of the fluid housing 101 lead to a downstream end side of the same. Also located is an inlet 104 in the rich of an upstream end face of the fluid housing 101 and an outlet 105 at a downstream end face of the fluid housing 101.
  • a contact strip 106 is located - as in the previous embodiment - on a narrow side of the fluid housing 101.
  • the fluid channels 103 are not annular, but rectangular or square formed.
  • the carrier 81 may also be designed as a rigid carrier.
  • At least one sensor for determining parameters of patient-related body fluids may be arranged on the flexible or rigid printed circuit board.
  • the sensor for determining the oxygen content or the oxygen saturation serve in the blood of the patient.
  • the device has a multiple function.
  • a fluid of predetermined temperature can be provided by means of the temperature sensor.
  • a therapeutic method can be monitored at the same time, for example in the case of a blood purification method (dialysis) in the case of kidney failure or other organ failure of the patient.
  • a fluid housing 1 1 1 is provided, in which a surface heating element 1 12 containing preferably meander-shaped heating conductors 113, 113 'is arranged.
  • the surface heating element 112 is integrally connected to a contact strip 114, which is arranged on a longitudinal side of the fluid housing 11 1 1 1 outside thereof.
  • the fluid housing 111 consists of two fluid housing halves, each having a plurality of spacers 116 on an inner side.
  • the spacers 16 are designed as spacer webs projecting from the inside, which are arranged distributed on the inside so that the surface heating element 112 is positioned substantially flat in an opening plane of the fluid housing halves.
  • both flat sides of the surface heating element 112 each form a planar fluid channel, wherein between a first inner side 117 'of the fluid housing 111 and the first fluid half 111' and a first flat side 118 'of the ceremonincopyettis 1 12 a first planar fluid channel 119' on the one hand and between a second inner side 117 "of the fluid housing 111 or 111" and a second flat side 118 "of the surface heating element 1 12, a second planar fluid channel 119" on the other hand is formed.
  • two planar fluid channels 119 ', 119 " which offer a relatively large flow space or low flow resistance, are symmetrically formed relative to a longitudinal center plane of the fluid housing 1 1 1.
  • the fluid entering at a first end face 120 of the fluid housing 111 via an inlet 121 flows in the first planar fluid channel 119 'and in the second planar fluid channel 119 ", in which it is passed under slight change in flow direction substantially in the longitudinal extension of the fluid housing 1 or straight to an opposite second end face 122, where it through the outlet 123 is returned to a transmission line.
  • the fluid is conducted along a flow direction F, which runs parallel to the longitudinal extension of the fluid housing 11.
  • the spacers 116 may also be punctiform or formed as elongated webs.
  • a length of the fluid housing 1 11 formed between the inlet 121 and the outlet 123 is greater than the width predetermined between the spacing of the two opposite longitudinal sides 115.
  • the surface heating element 112 has meandering heating conductors 113, 113 'on both flat sides 118', 118 ', which are shown by way of example for a flat side in Figure 16.
  • the heating conductors 113, 113' preferably run in the flow direction F or parallel to the longitudinal edges 115 of the fluid housing on both sides of a transverse center plane Q of the surface heating element 1 12, wherein the contact strip 114 facing ends of the Edelleiterbahnen 113, 113 'directly with contacts 124 of the contact strip 1 14 and opposite ends of the Schuleiterbahn 113, 113' over in the transverse plane Q extending rectilinear tracks 125th with appropriate contacts
  • only a single first temperature sensor 126 is on the first end side 120
  • a second temperature sensor 127 on the opposite second end side 122 and one in the transverse center plane
  • a third temperature sensor 28 for determining an excess temperature is arranged only on the first flat side 118 '
  • the third temperature sensor 128 for determining the excess temperature may be arranged at the edge in the region of the second end face 122, preferably at a location in which the highest
  • even further temperature sensors can be applied, which are arranged as close as possible to the conductor track in order to register the temperature quickly.
  • the fluid housing halves 111 'and 111 are connected to one another in a material-locking manner, for example by gluing or ultrasonic welding or by injection molding. that of the housing halves 111 ', 111 "via a sealing adhesive directly on the component formed by the surface heating element 112 and the contact strip 1 4.
  • the third temperature sensor 128 should be arranged to determine the excess temperature.
  • a cassette 129 formed from the fluid housing 11, the surface heating element 12 and the contact strip 114 can be arranged in a preferably vertically extending receiving slot 130 of a control device 131.
  • the control unit 131 has a housing 140 in which a control unit 141 for controlling or regulating the fluid heating, a monitor 142 and a power supply unit 143 (power supply unit) are arranged.
  • the receiving slot 130 preferably has resilient contact elements into which the contact strip 114 engages with the contacts 124 in a set position latching. In the insertion position, the cassette 129 is thus mechanically and electrically connected via this latching connection with the control unit 141. While the contact strip 14 is concealed in the receiving slot 130 of the housing 140, the fluid housing 11 1 is arranged with the surface heating element 112 outside the housing 140 and visible from the outside, so that any changes in the consistency of the fluid or in the flow characteristics can be seen.
  • the heating conductors 113 of the first flat side 1 18 'of themonynfilettis 112 in the extension plane of themonyncopyettis 1 12 or in the flow direction F of the fluid offset from the Schuleiterbahnen 1 13 of the second flat side 118 "of themonynheizelements 112 are arranged so that they do not overlap and allow a homogeneous heat input to both fluid channels 119 ', 119 ".
  • sensors for detecting the fill level or the flow rate can also be arranged within the fluid housing 111.
  • the ceremoniesnheizelement 112 is formed as a flexible explicatnheizelement having a substrate on which Schuleiterbahnen 113, 1 13 'are applied, for example by etching or printing or the like.
  • the surface heating element 112 is coated with a biocompatible material.
  • the circuit board of the surface heating element is always provided with an electrical insulation layer, which is preferably formed biocompatible.
  • the surface heating element 112 may also be attached to an inner side of the fluid housing 1 1 1. In this case, forms within the fluid housing 1 11 only a single fluid channel.
  • the flexible printed circuit board may also be formed as a so-called "rigid-flex" printed circuit board, which is connected to a rigidly formed contact strip.

Abstract

L'invention concerne un dispositif destiné à chauffer des fluides en écoulement, notamment des fluides intraveineux, ce dispositif comprenant un boîtier pour fluide contenant au moins un canal pour fluide à travers lequel le fluide est guidé d'une entrée du boîtier jusqu'à une sortie, une unité chauffante comportant au moins un élément électrique chauffant par rayonnement pour chauffer le fluide en écoulement dans le canal, et une unité de régulation thermique comportant au moins un capteur de température disposé sur l'élément électrique chauffant qui est monté à l'intérieur du boîtier pour fluide et qui forme au moins partiellement une paroi du canal pour fluide. Selon l'invention, au moins un canal pour fluide linéaire relie l'entrée et la sortie du boîtier pour fluide.
EP11719447A 2010-03-16 2011-03-16 Dispositif destiné à chauffer des fluides en écoulement et procédé de fabrication correspondant Withdrawn EP2547386A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE201010002895 DE102010002895A1 (de) 2010-03-16 2010-03-16 Vorrichtung zum Erwärmen von strömenden Fluiden
DE102010029274 2010-05-25
DE102010029732 2010-06-07
DE102010031068 2010-07-07
PCT/DE2011/000261 WO2011113421A2 (fr) 2010-03-16 2011-03-16 Dispositif destiné à chauffer des fluides en écoulement et procédé de fabrication correspondant

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EP2547386A2 true EP2547386A2 (fr) 2013-01-23

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US (1) US20120330234A1 (fr)
EP (1) EP2547386A2 (fr)
RU (1) RU2012139451A (fr)
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