EP3791117B1 - Elektrischer heizer - Google Patents

Elektrischer heizer Download PDF

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Publication number
EP3791117B1
EP3791117B1 EP19729832.6A EP19729832A EP3791117B1 EP 3791117 B1 EP3791117 B1 EP 3791117B1 EP 19729832 A EP19729832 A EP 19729832A EP 3791117 B1 EP3791117 B1 EP 3791117B1
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EP
European Patent Office
Prior art keywords
longitudinal
housing
electric heater
pipe
wall
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.)
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EP19729832.6A
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English (en)
French (fr)
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EP3791117A1 (de
Inventor
Federico ZOPPAS
Giuliano ZANETTE
Maurizio Biasi
Giacomo DURIGON
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.)
IRCA SpA Industria Resistenze Corazzate e Affini
Original Assignee
IRCA SpA Industria Resistenze Corazzate e Affini
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Publication of EP3791117A1 publication Critical patent/EP3791117A1/de
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Publication of EP3791117B1 publication Critical patent/EP3791117B1/de
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Classifications

    • 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
    • F24H1/14—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 by tubes, e.g. bent in serpentine form
    • F24H1/142—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 by tubes, e.g. bent in serpentine form 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
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • 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
    • F24H2250/00—Electrical heat generating means
    • F24H2250/02—Resistances
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/012—Heaters using non- flexible resistive rods or tubes not provided for in H05B3/42
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021—Heaters specially adapted for heating liquids

Definitions

  • the present invention relates to an electric heater, in particular to an electric heater for a heat engine, e.g. a heat pump.
  • the invention also relates to a heat engine provided with such a heater.
  • Electric heaters often are used to heat a fluid which flows in a pipe which belongs to the hydraulic circuit of a device.
  • electric heaters formed by a metal body in which one or two resistors are inserted are advantageous.
  • the metal body is also provided with a hole, delimited by a substantially continuous wall, in which the pipe to be heated is inserted.
  • WO2013170887A1 and WO2013046171 A1 disclose flow through heater devices comprising a tube for a fluid to be heated, a tubular heating element in thermal contact with the tube, wherein the tubular heating element comprises a casing provided with at least one tab portion wrapped around the tube.
  • DE2903743A1 and DE2942523A1 disclose other examples of flow through heater devices.
  • an electric heater for heating a pipe, in particular a pipe of a heat engine such as e.g. a heat pump, the electric heater comprising at least one first electric resistor and a metal body, wherein the metal body is provided with
  • the longitudinal end projections preferably are folded towards the exterior, i.e. they form said angle, also when the longitudinal end projections are moved close to each other, upon the insertion of the pipe.
  • the longitudinal end projections are folded towards the exterior of said longitudinal housing preferably so as to define a flaring for inserting the pipe into the housing.
  • the longitudinal end projections folded towards the exterior the longitudinal end projections can advantageously be effectively grasped by a clamping element, in particular when the pipe is inside the longitudinal housing. Therefore, the longitudinal end projections can be retained by the clamping element.
  • the longitudinal end projections preferably diverge towards the exterior of the longitudinal housing, at least in a first configuration.
  • the longitudinal projections can for example be diverging or parallel or converging when the longitudinal end projections have been moved close to each other upon the insertion of the pipe.
  • a kit comprising the electric heater and at least one clamping element comprising two longitudinal clamping portions adapted to grasp the longitudinal end projections of the longitudinal housing when the pipe is inserted in the longitudinal housing.
  • a heat engine is provided, in particular a heat pump, comprising the electric heater and at least one such a clamping element comprising two longitudinal clamping portions; wherein the heat engine comprises a pipe arranged in the longitudinal housing; and wherein the longitudinal clamping portions grasp the longitudinal end projections.
  • an assembly method for assembling the electric heater with a pipe connected to a heat engine, in particular a heat pump;
  • the electric heater advantageously can be easily assembled with the pipe without removing the pipe from the heat engine to which it belongs. In other words, there is no need to open the hydraulic circuit to which the pipe belongs.
  • the longitudinal housing advantageously is configured to receive the pipe, by passing it through the longitudinal opening.
  • the longitudinal housing may receive the pipe by means of a movement of the metal body which is transverse to the longitudinal axis of the pipe.
  • the electric heater is particularly adapted to be assembled with the pipe of a pressurized circuit and/or a circuit in which a fluid flows which is not to be exposed to the air, such as e.g. a refrigerating circuit.
  • the fluid flowing in the pipe may in particular be a gas.
  • the electric heater is particularly adapted to be assembled with the pipe of a heat engine, such as a heat pump.
  • the heater may for example, be assembled with a pipe which is upstream or downstream of the compressor of a heat pump, for example between the compressor and the condenser.
  • an electric heater 1 according to the invention is shown.
  • the electric heater 1 substantially is of the flow through heater (FTH) type.
  • the electric heater 1 is particularly adapted to heat a pipe 90, and more in particular a fluid, e.g. a gas, which flows in pipe 90.
  • Pipe 90 may be for example, the pipe of a heat engine, e.g. a heat pump, configured to execute a cooling and/or heating cycle.
  • the electric heater 1 comprises a metal body 2 and two electric resistors 23, 33 inserted in the metal body 2. Alternatively, only one electric resistor is provided or more than two electric resistors can be provided.
  • the metal body 2 preferably is made of aluminum or aluminum alloy or of steel.
  • the electric heater 1 can pass from a first configuration to a second configuration. In the first configuration, shown in particular in Fig. 1 and in Fig. 2 , the electric heater 1 is configured to receive pipe 90, in particular by passing it through the longitudinal opening which is further described later.
  • Pipe 90 can for example be arranged in the electric heater 1 by moving the electric heater 1 transversely to the longitudinal axis of pipe 90.
  • pipe 90 is accommodated and clamped, or blocked, in the electric heater 1, in particular in the metal body 2.
  • the metal body 2 indeed is provided with a longitudinal housing 11, i.e. with a longitudinal seat for pipe 90.
  • Housing 11 substantially is a cavity or recess of the metal body 2.
  • Housing 11 defines an axis X, which is a longitudinal axis of the electric heater 1.
  • Axis X preferably is rectilinear or substantially rectilinear.
  • Housing 11 is open at the ends thereof and has a longitudinal opening along axis X. The longitudinal opening is continuous and allows pipe 90 to be inserted into housing 11.
  • the longitudinal opening is laterally delimited by longitudinal end projections 12, 14 of the longitudinal housing 11, preferably two longitudinal end projections 12, 14.
  • the longitudinal projections 12, 14 are spaced apart from each other and adapted to be moved close to each other after inserting the pipe 90 into the longitudinal housing 11.
  • each longitudinal end projection 12,14 are folded towards the exterior of the longitudinal housing 11.
  • each longitudinal end projection 12, 14 is inclined with respect to the respective portion of wall 27, 37 of the longitudinal housing 11 which is proximal thereto.
  • Each longitudinal end projection 12, 14 preferably forms an angle with the respective portion of wall 27, 37 of the longitudinal housing 11 which is proximal thereto, said angle preferably being other than 180°, preferably greater than or equal to 90°.
  • the longitudinal end projections 12, 14 preferably are inclined or folded towards the exterior of the longitudinal housing 11 so as to form a flaring to facilitate the insertion of the pipe 90 into the longitudinal housing 11.
  • the longitudinal projections preferably diverge towards the exterior of the longitudinal housing 11, in particular at least or only in the first configuration.
  • the longitudinal projections 12, 14 define a respective plane C, D, and such planes C, D diverge towards the exterior of the longitudinal housing 11.
  • the longitudinal projections 12, 14 preferably are symmetrical, or substantially symmetrical, with respect to a symmetry plane K which includes the axis X, in particular on which the axis X lies.
  • the symmetry plane K preferably, but not exclusively, is the symmetry plane of the whole electric heater 1.
  • the electric heater 1 is symmetrical, or substantially symmetrical, with respect to the symmetry plane K.
  • the metal body 2 is also provided with two longitudinal through holes 21, 31, which define a respective axis A, B, which is parallel to the axis X.
  • the number of longitudinal through holes preferably is equal to the number of electric resistors with which the electric heater is provided.
  • the through holes 21, 31 are delimited by a respective inner surface 20, 30 of the metal body 2.
  • the inner surfaces 20, 30 preferably are cylindrical or substantially cylindrical.
  • the inner surfaces 20, 30 preferably are continuous or substantially continuous.
  • Each electric resistor 23, 33 is inserted in a respective through hole 21, 31.
  • Each electric resistor 23, 33 preferably has two end portions 24, 34 which come out of the respective through hole 21, 31.
  • Such end portions 24, 34 comprise pins for connecting the electric resistors 23, 33 to a power supply source (not shown).
  • the electric resistors 23, 33 preferably are equal to each other.
  • Each electric resistor 23, 33 preferably comprises at least one resistive element, for example one or more resistive wires.
  • the at least one resistive element is arranged in an insulating material, e.g. magnesium oxide.
  • the insulating material preferably is directly in contact with the inner surface 20, 30 of the respective through hole 21, 31.
  • the electric resistors 23, 33 are sheathed resistors, also known as sheathed resistances, i.e. provided with a metal sheath or casing.
  • the inner surfaces 20, 30 of the metal body 2 are in contact, preferably completely and/or directly in contact, with the outer surface of the metal sheath of the respective electric resistor 23, 33.
  • the metal body 2 comprises two walls 22, 32, which separate a respective electric resistor 23, 33 from the longitudinal housing 11. Thereby, the heat generated by the electric resistors 23, 33 can be transmitted by conduction to the longitudinal housing 11.
  • a curved portion 27, 37 extends from each wall 22, 32.
  • Each curved portion 27, 37 is joined with a respective longitudinal projection 12, 14.
  • Each longitudinal projection 12, 14 is inclined with respect to the curved portion 27, 37 which is proximal thereto.
  • the aforesaid curved portions 27, 37 are portions of wall of the longitudinal housing 11 and preferably are concave towards the interior of the longitudinal housing 11.
  • a bottom portion 15, or central portion, of the housing 11 is provided between the walls 22, 32.
  • the bottom portion 15 preferably is opposite to the longitudinal opening of the housing 11.
  • Each wall 22, 32 preferably is joined with the bottom portion 15 by a respective joining portion 26, 36 ( Fig. 2A ) or joining portion of wall.
  • the bottom portion 15 preferably has a smaller thickness than the thickness of each wall 22, 32 and preferably also than the thickness of each joining portion 26, 36.
  • the joining portions 26, 36 preferably have a constant, or substantially constant, thickness (indicated in with reference "F" Fig. 2A ). It instead is preferable that the bottom portion 15 has a decreasing thickness from the sides towards axis X or more in particular, towards a middle axis thereof, parallel to axis X and contained within the symmetry plane K.
  • the bottom portion 15 preferably has a substantially flat inner surface 18 and an outer surface 19 which is convex towards the inner surface 18, i.e. concave towards the exterior of the electric heater 1, in particular towards the exterior of the metal body 2.
  • the inner surface 18 preferably is substantially perpendicular to the symmetry plane K.
  • the outer surface 19 is an outer surface of the metal body 2.
  • the bottom portion 15 preferably has a minimum thickness "E" which is equal, or about equal, to a value between 1/10 and 2/3 of thickness "F" of each joining portion 26, 36.
  • the minimum thickness "E” of the bottom portion 15 for example is equal, or about equal, to 1/2 of thickness "F" of each joining portion 26, 36.
  • the inner surface 18 of the bottom portion 15 is part of the inner surface 10 ( Fig. 2A ) of the housing 11, i.e. it is a portion of the inner surface 10 of housing 11.
  • the inner surface 10 of the housing 11 also comprises two portions of surface 25, 35 between which the portion of surface 18 extends.
  • the portions of surface 25, 35 are concave towards the interior of the housing 11.
  • a part of the portion of surface 25 is opposite to a part of the inner surface 20.
  • a part of the portion of surface 35 is opposite to a part of the inner surface 30.
  • Another portion of surface 28, 38 extends from each portion of surface 25, 35.
  • Each portion of surface 28, 38 has a different concavity from the portion of surface 25, 35 adjacent thereto.
  • the portions of surface 28, 38 are convex towards the interior of housing 11, i.e. concave towards the exterior of housing 11.
  • the portions of surface 28, 38 join the portions of surface 25, 35 with a respective portion of surface 29, 39.
  • the portions of surface 29, 39 are the inner surfaces of the longitudinal projections 12, 14 and preferably are parallel to plane C and to plane D, respectively.
  • the heater 1 is designed in function of pipe 90, which is intended to be arranged in the housing 11.
  • the pipe 90 intended to be received in the housing 11 preferably is made of metal, for example made of steel.
  • the heater 1 preferably is designed to house a pipe 90 having a cylindrical, or substantially cylindrical, outer surface.
  • the radius of curvature of the portions of surface 25, 35 is substantially equal to the radius of curvature of the outer surface of the pipe 90.
  • the minimum distance between the portions of surface 28, 38, which is the minimum width "W" ( Fig. 2 ) of the longitudinal opening has a value which is equal, or about equal to, a value between twice and 3 times the outer radius of pipe 90.
  • the minimum width "W" of the longitudinal opening may have an extension which is equal, or about equal, to twice or 2.5 times the outer radius of pipe 90.
  • the longitudinal projections 12, 14 are moved close to each other to pass from the first to the second configuration, as shown in a comparison between Fig. 2 and Fig. 4 .
  • the longitudinal projections 12, 14 face each other in the second configuration.
  • the longitudinal projections 12, 14 are substantially parallel to each other in the second configuration.
  • the portions of surface 29, 39 face each other and preferably are parallel, or substantially parallel, to each other.
  • the longitudinal projections 12, 14 are spaced apart from each other in the second configuration.
  • the portions of surface 29, 39 are spaced apart from each other.
  • the minimum distance "G" between the longitudinal projections 12, 14, in particular between the portions of surface 29, 39 preferably is equal to a value between 1/10 and 1 with respect to the outer radius of pipe 90.
  • the bottom portion 15 there is a deformation of the bottom portion 15 in the switch from the first to the second configuration.
  • the inner surface 18 takes on a curved shape, concave towards the interior, with substantially the same radius of curvature as the portions of surface 25, 35.
  • the outer surface 19 preferably is deformed.
  • the outer surface 19 takes on a flat, or substantially flat, shape.
  • the bottom portion 15 preferably, but not exclusively, is the only part which is deformed.
  • the axes A, B and X preferably are mutually coplanar in the second configuration.
  • the surfaces 18, 25, 35 advantageously adhere to the outer surface of pipe 90 in the second configuration.
  • a clamping element 80 may grasp the longitudinal projections 12, 14 by means of two longitudinal clamping portions 81, 82 when the electric heater 1 is in the second configuration with the pipe 90 arranged in the housing 11.
  • the inner surfaces of the clamping portions 81, 82 are in contact with the outer surfaces 49, 59 of the longitudinal projections 12, 14 in order to retain the longitudinal projections 12, 14.
  • the outer surfaces 49, 59 of the longitudinal projections 12, 14 are opposite to the portions of surface 29, 39, respectively.
  • the clamping element 80 has a length which is equal, or about equal, to the length along axis X of the longitudinal projections 12, 14.
  • the clamping element 80 preferably is of elastic type, i.e. elastically deformable.
  • the clamping element 80 is made of harmonic steel or other suitable elastic material.
  • the clamping element 80 preferably comprises an elastically deformable curved portion 83 to move the clamping portions 81, 82 away from each other. Thereby, the longitudinal projections 12, 14 are retained by an elastic return force.
  • the metal body 2 can advantageously adapt to possible heat expansions of pipe 90 due in particular to the elasticity of the clamping element 80 and given that the longitudinal projections 12, 14 are provided spaced apart from each other.
  • the clamping element 80 may be part of a kit which also comprises the electric heater 1.
  • the electric heater 1 may advantageously be assembled with a pipe 90 which is upstream or downstream of the compressor of a heat pump, for example between the compressor and the condenser.
  • an assembly method may be executed, comprising the steps of:
  • the invention also comprises a heat engine, in particular a heat pump, comprising the electric heater 1 and at least one clamping element 80, preferably one clamping element 80, comprising two longitudinal clamping portions 81, 82; wherein the heat engine comprises a pipe 90 arranged in the longitudinal housing 11 and wherein the longitudinal clamping portions 81, 82 grasp the longitudinal end projections 12, 14.
  • a heat engine in particular a heat pump, comprising the electric heater 1 and at least one clamping element 80, preferably one clamping element 80, comprising two longitudinal clamping portions 81, 82; wherein the heat engine comprises a pipe 90 arranged in the longitudinal housing 11 and wherein the longitudinal clamping portions 81, 82 grasp the longitudinal end projections 12, 14.

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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)
  • Resistance Heating (AREA)
  • Saccharide Compounds (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (13)

  1. Elektrische Heizung (1) zum Beheizen eines Rohres (90), insbesondere eines Rohres einer Wärmepumpe, mit mindestens einem ersten elektrischen Widerstand (23) und einem Metallkörper (2),
    wobei der Metallkörper (2) versehen ist mit
    - einem längs verlaufenden Gehäuse (11), das eine erste Achse (X) definiert, an seinen Enden offen ist und eine längs verlaufende Öffnung entlang der ersten Achse (X) aufweist, um das Rohr (90) in das längs verlaufende Gehäuse (11) einzuführen;
    - mindestens einem ersten Längsdurchgangsloch (21), das eine zweite Achse (A) parallel zur ersten Achse (X) definiert, wobei der erste elektrische Widerstand (23) in das erste Durchgangsloch (21) eingesetzt ist;
    - einer ersten Wand (22), die den ersten elektrischen Widerstand (23) von dem längs verlaufenden Gehäuse (11) trennt, wodurch die von dem ersten elektrischen Widerstand (23) erzeugte Wärme durch Leitung auf das längs verlaufende Gehäuse (11) übertragen werden kann;
    wobei die längs verlaufende Öffnung seitlich durch längs verlaufende Endvorsprünge (12, 14) des längs verlaufenden Gehäuses (11) begrenzt ist, die voneinander beabstandet sind und so angepasst sind, dass sie beim Einführen des Rohrs (90) in das längs verlaufende Gehäuse (11) nahe zueinander bewegt werden;
    dadurch gekennzeichnet, dass die längs verlaufenden Endvorsprünge (12, 14) zur Außenseite des längs verlaufenden Gehäuses (11) hin gefaltet sind.
  2. Elektrische Heizung (1) nach Anspruch 1, wobei die längs verlaufenden Endvorsprünge (12, 14) zum Äußeren des längs verlaufenden Gehäuses (11) hin divergieren.
  3. Elektrische Heizung nach einem der vorhergehenden Ansprüche, wobei jeder längs verlaufende Endvorsprung (12, 14) in Bezug auf den jeweiligen Abschnitt der Wand (27, 37) des längs verlaufenden Gehäuses (11), der sich proximal dazu befindet, geneigt ist.
  4. Elektrische Heizung (1) nach einem der vorhergehenden Ansprüche, wobei die längs verlaufenden Endvorsprünge (12, 14) symmetrisch in Bezug auf eine Symmetrieebene (K) sind, die die erste Achse (X) enthält.
  5. Elektrische Heizung (1) nach einem der vorhergehenden Ansprüche, wobei das längs verlaufende Gehäuse (11) einen Bodenabschnitt (15) mit einer zur ersten Achse (X) hin abnehmenden Dicke aufweist.
  6. Elektrische Heizung (1) nach einem der vorhergehenden Ansprüche, wobei der Bodenteil (15) des Gehäuses (11) eine im Wesentlichen flache Innenfläche (18) und/oder eine Außenfläche (19) aufweist, die zur Innenfläche (18) hin konvex ist.
  7. Elektrische Heizung (1) nach einem der vorhergehenden Ansprüche, wobei der Metallkörper (2) mit einem zweiten Längsdurchgangsloch (31) versehen ist, das eine dritte Achse (B) definiert, die parallel zur ersten Achse (X) ist; wobei ein zweiter elektrischer Widerstand (33) vorgesehen ist, der in das zweite Durchgangsloch (31) eingesetzt ist;
    und wobei eine zweite Wand (32) vorgesehen ist, die den zweiten elektrischen Widerstand (33) von dem längs verlaufenden Gehäuse (11) trennt, wodurch die von dem zweiten elektrischen Widerstand (33) erzeugte Wärme durch Leitung auf das längs verlaufende Gehäuse (11) übertragen werden kann.
  8. Elektrische Heizung nach Anspruch 7, wobei sich ein jeweiliger Abschnitt der Wand (27, 37) des längs verlaufenden Gehäuses (11) von der ersten Wand (22) und von der zweiten Wand (32) aus erstreckt, wobei jeder Abschnitt der Wand (27, 37) vorzugsweise gekrümmt ist;
    wobei jeder Abschnitt der Wand (27, 37) mit einem entsprechenden längs verlaufenden Endvorsprung (12, 14) verbunden ist;
    und wobei jeder längs verlaufende Endvorsprung (12, 14) in Bezug auf den Abschnitt der Wand (27, 37), der sich proximal dazu befindet, geneigt ist.
  9. Elektrische Heizung (1) nach einem der Ansprüche 7 oder 8, wobei der Bodenabschnitt (15) des Gehäuses (11) zwischen der ersten Wand (22) und der zweiten Wand (32) angeordnet ist, und wobei der Bodenabschnitt (15) vorzugsweise eine geringere Dicke als die Dicke der ersten Wand (22) und als die Dicke der zweiten Wand (32) aufweist.
  10. Elektrische Heizung (1) nach einem der Ansprüche 7, 8 oder 9, wobei der Bodenabschnitt (15) des Gehäuses (11) zwischen einem ersten Verbindungsabschnitt (26) und einem zweiten Verbindungsabschnitt (36) angeordnet ist, die benachbart der ersten Wand (22) bzw. der zweiten Wand (32) liegen, und wobei der Bodenabschnitt (15) vorzugsweise eine geringere Dicke als die Dicke des ersten Verbindungsabschnitts (26) und als die Dicke des zweiten Verbindungsabschnitts (36) aufweist.
  11. Bausatz mit einer elektrischen Heizung (1) nach einem der vorhergehenden Ansprüche und mindestens einem Klemmelement (80), das zwei längs verlaufende Klemmabschnitte (81, 82) aufweist, die so ausgebildet sind, dass sie die längs verlaufenden Endvorsprünge (12, 14) des längs verlaufenden Gehäuses (11) erfassen, wenn das Rohr (90) in das längs verlaufende Gehäuse (11) eingeführt wird, und wobei das mindestens eine Klemmelement (80) vorzugsweise elastisch ist.
  12. Wärmekraftmaschine, insbesondere Wärmepumpe, mit einer elektrischen Heizung (1) nach einem der Ansprüche 1 bis 10 und mindestens einem Klemmelement (80) mit zwei längs verlaufenden Klemmabschnitten (81, 82),
    wobei die Wärmekraftmaschine ein Rohr (90) umfasst, das in dem längs verlaufenden Gehäuse (11) angeordnet ist, und wobei die längs verlaufenden Klemmabschnitte (81, 82) die längs verlaufenden Endvorsprünge (12, 14) ergreifen.
  13. Montageverfahren zum Zusammenbau der elektrischen Heizung (1) nach einem der Ansprüche 1 bis 10, mit einem mit einer Wärmekraftmaschine, insbesondere eine Wärmepumpe, verbundenen Rohr (90),
    wobei mindestens ein Klemmelement (80) vorgesehen ist, das zwei längs verlaufende Klemmabschnitte (81, 82) umfasst, die geeignet sind, die längs verlaufenden Endvorsprünge (12, 14) des längs verlaufenden Gehäuses (11) zu greifen,
    wobei das Montageverfahren die folgenden Schritte umfasst:
    a) Anordnen des Rohrs (90) im längs verlaufenden Gehäuse (11), wodurch das Rohr (90) durch die längs verlaufende Öffnung geführt wird;
    b) Bewegen der längs verlaufenden Vorsprünge (12, 14) nahe zueinander;
    c) Festhalten der längs verlaufenden Vorsprünge (12, 14) mittels des mindestens einen Klemmelements (80).
EP19729832.6A 2018-05-07 2019-05-07 Elektrischer heizer Active EP3791117B1 (de)

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IT102018000005109A IT201800005109A1 (it) 2018-05-07 2018-05-07 Riscaldatore elettrico
PCT/IB2019/053722 WO2019215602A1 (en) 2018-05-07 2019-05-07 Electric heater

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IT201800004169A1 (it) * 2018-04-03 2019-10-03 Riscaldatore elettrico
CN111121272B (zh) * 2020-01-04 2021-11-05 郑军锋 一种双通道稳压型水加热装置
CN111878879A (zh) * 2020-08-20 2020-11-03 珠海格力电器股份有限公司 电暖器

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DE2942523C2 (de) * 1979-10-20 1981-11-19 Türk & Hillinger GmbH & Co, 7200 Tuttlingen Elektrischer Durchlauferhitzer
DE2903743C2 (de) * 1979-02-01 1984-07-05 Türk & Hillinger GmbH & Co, 7200 Tuttlingen Verfahren zum Herstellen eines elektrischen Durchlauferhitzers

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ITRM20110514A1 (it) * 2011-09-29 2013-03-30 I R C A S P A Ind Resistenz E Corazzate E Profilato per un riscaldatore e riscaldatore a flusso di fluidi, in particolare per macchine da caffe'
KR102047441B1 (ko) * 2012-05-15 2019-11-21 블랙만 게엠베하 코. 카게 나선 동적 유동 관통 히터

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Publication number Priority date Publication date Assignee Title
DE2903743C2 (de) * 1979-02-01 1984-07-05 Türk & Hillinger GmbH & Co, 7200 Tuttlingen Verfahren zum Herstellen eines elektrischen Durchlauferhitzers
DE2942523C2 (de) * 1979-10-20 1981-11-19 Türk & Hillinger GmbH & Co, 7200 Tuttlingen Elektrischer Durchlauferhitzer

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EP3791117A1 (de) 2021-03-17
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