EP2597394B1 - Chauffe-eau instantané à fil nu - Google Patents

Chauffe-eau instantané à fil nu Download PDF

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Publication number
EP2597394B1
EP2597394B1 EP11190470.2A EP11190470A EP2597394B1 EP 2597394 B1 EP2597394 B1 EP 2597394B1 EP 11190470 A EP11190470 A EP 11190470A EP 2597394 B1 EP2597394 B1 EP 2597394B1
Authority
EP
European Patent Office
Prior art keywords
bare wire
water
flow
heater
cartridge
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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Application number
EP11190470.2A
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German (de)
English (en)
Other versions
EP2597394A9 (fr
EP2597394A1 (fr
Inventor
Christian Koch
Daniel Möbes
Tobias EICKEMEYER
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Gerdes OHG
Original Assignee
Gerdes OHG
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
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Priority to EP11190470.2A priority Critical patent/EP2597394B1/fr
Priority to PL11190470T priority patent/PL2597394T3/pl
Priority to PCT/EP2012/073393 priority patent/WO2013076209A1/fr
Publication of EP2597394A1 publication Critical patent/EP2597394A1/fr
Publication of EP2597394A9 publication Critical patent/EP2597394A9/fr
Application granted granted Critical
Publication of EP2597394B1 publication Critical patent/EP2597394B1/fr
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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
    • F24H1/101—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
    • F24H1/103—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 with bare resistances in direct contact with the fluid
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels

Definitions

  • the invention relates to a blank wire heater according to the preamble of claim 1.
  • such bare-wire instantaneous water heaters from the prior art, in particular from the patent DE 102 21 026 A1 , known.
  • Such water heaters heat the water while it flows through the water heater or the heating cartridge.
  • the heating cartridge is also referred to in the prior art as a heating device, heating cartridge or as a base body with an associated heating channel and therefore explained below under the synonym Schukartusche.
  • the heating cartridge is an integral part of a basic body of the blank wire heater or designed as such.
  • the heating cartridge has a cartridge interior, through which flows the water to be heated.
  • the water to be heated passes through the water inlet.
  • the heated water leaves the cartridge interior through the water drain.
  • Both the water inlet and the water outlet are on the shell side, in particular in the radial direction, arranged on the heating cartridge.
  • the heating cartridge has two end faces and a shell side. Under the water inlet or under the water outlet are therefore To understand water connection elements by means of which the cartridge is connected to a further water channel system.
  • the receptacles are arranged, which serve to hold the bare wire heating coil.
  • the end faces mean the end sides in the longitudinal direction of the functional element.
  • a heating cartridge has an elongated cartridge interior, wherein the functional element is adapted to the cartridge interior.
  • an elongated functional element In a similar way is usually assumed that an elongated functional element.
  • the recordings of the front sides therefore ensure that the bare wire heating coil is held or aligned in the longitudinal direction of the functional element or in the longitudinal direction of the cartridge interior.
  • the receptacles of the functional element may, in addition to mechanical fastening means for the ends of the bare wire heating coil also have corresponding electrical connection means.
  • the invention is therefore an object of the invention to provide a bare wire heater with a bare wire heating coil for a heating cartridge, which ensures safe and reliable operation of the heating cartridge.
  • the performance of the heating cartridge should remain as possible.
  • each Wasserumlenkelement is suitable that the cartridge interior is flowed through in such a way without it comes to the above-mentioned passive zones.
  • the diversion prevents the flow of water at certain points or areas being so low that air bubbles can accumulate or hold there. Even if air bubbles should arise in the region of a Wasserumlenkelements, they are entrained by their Umlenkeigenschaft of the flowing water and transported away in the flow direction of the water. A prolonged passive zone can not form.
  • the mean flow direction of the corresponding water is meant.
  • the flow direction corresponds thus to the longitudinal direction of the cartridge interior, namely from the water inlet to the water outlet.
  • the inlet area is thus the area of the cartridge interior between the water inlet and the bare wire heating coil.
  • the risk of a passive zone is particularly high, because the direction of flow of the water changes from an inlet direction of the water inlet in a longitudinal direction of the cartridge interior.
  • very different flow velocities and / or turbulence may arise, which favor a formation of a passive zone.
  • the outlet area of the cartridge interior corresponds to the area of the cartridge interior between the bare wire heating coil and the water outlet. Also in this area, the flow direction of the water changes from a longitudinal direction of the cartridge interior in a flow direction of the water drain. Accordingly, very different flow velocities and / or turbulences may also occur here, which favor passive zones. By a Wasserumlenkelement in the outlet area, the corresponding risk can be avoided.
  • a further advantageous embodiment of the blank wire heater is characterized in that the Wasserumlenkelement is adapted to the water inlet in front of the bare wire heating coil.
  • the water deflection element adapted to the water inlet serves for deflecting the water entering the inside of the cartridge into a longitudinal direction of the interior of the cartridge.
  • the corresponding Wasserumlenkelement is adapted to the water inlet, for example, to form a guide from the orientation of the water inlet to the longitudinal direction of the cartridge interior.
  • the adaptation can therefore take into account the different flow directions or other different flow parameters.
  • the term "before (the bare wire heating coil)" can also be understood in the flow direction of the water in the cartridge interior before (the bare wire heating coil).
  • a further advantageous embodiment of the blank wire heater is characterized in that the Wasserumlenkelement is adjusted behind the bare wire heating coil to the water outlet.
  • the water deflection element which is adapted to the water outlet serves for deflecting the water flowing through the cartridge interior in the longitudinal direction into a flow direction of the water outlet.
  • the adaptation takes place here analogously to the previously explained manner. Thus, this adaptation can take into account the different flow directions and / or other flow parameters.
  • the term "behind (the bare wire heating coil)" can also be understood in the flow direction of the water in the interior of the cartridge behind (the bare wire heating coil).
  • a further advantageous embodiment of the blank wire heater is characterized in that the functional element is designed to be plugged in the manner of a module and / or into the heating cartridge.
  • This is a functional element that can be installed like a module in the instantaneous water heater or in the heating cartridge and made removable again.
  • Such a functional element has the bare wire heating coil and the receptacles that hold the ends of the bare wire heating coil.
  • the functional element therefore also serves as an assembly aid for the introduction of the bare wire heating coil in the bare wire water heater or in the heating cartridge.
  • the functional element may also serve as a supporting element for the bare wire heating coil. The functional element thus remains in the device during operation of the blank wire heater.
  • the functional element can be inserted into the heating cartridge and both are positively and / or positively connected to one another, however, the corresponding connection between the functional element and the heating cartridge can also be released again. Therefore, it is to be assumed in this sense of a module-like functional element. Thanks to the modular functional element can be dispensed with a manual insertion of the bare wire heating coil by means of appropriate special tools. The associated damage to the bare wire heating coil or the cartridge interior are significantly reduced or even partially avoided.
  • a further advantageous embodiment of the blank wire flow heater is characterized in that the functional element has all Wasserumlenk 1952. Due to the shell-side arrangement of the water inlet and the water outlet to the heating cartridge whose end faces are not affected by the Wasserzulauf point. not occupied by the water drain. They can therefore be used to allow the simplest possible insertion of the preferred modular functional element in the heating cartridge.
  • the bare-wire instantaneous water heater can have a corresponding opening on an associated end face.
  • the water inlet or the water drain does not interfere with a corresponding insertion, since these are arranged on the shell side of the heating cartridge.
  • the Wasserumlenketti not interfere with a corresponding plugging, since they are assigned to the preferred module-like functional element.
  • each Wasserumlenkelement forms an end-side inner wall of the cartridge interior.
  • the Wasserumlenkelement thus forms no cavity. Even backwashing with air bubbles or unknown tempered water is prevented.
  • a further advantageous embodiment of the blank wire heater is characterized in that each Wasserumlenkelement arcuate, wedge-shaped or concave is configured.
  • a wedge-shaped configuration of the Wasserumlenkelements is particularly simple and inexpensive to produce.
  • An arcuate and / or concave configuration of the water deflecting element has the advantage that the radii of curvature can be adapted to the desired flow velocities and / or to the corresponding flow resistance.
  • a further advantageous embodiment of the blank wire flow heater is characterized in that each Wasserumlenkelement is combined at the respective end face of the functional element with the respective recording.
  • the receptacle and the corresponding Wasserumlenkelement can thus form a unit.
  • the functional element can be designed particularly compact and with high stability.
  • a further advantageous embodiment of the blank wire flow heater is characterized in that the functional element has at least one flow guide element for guiding the water in the cartridge interior.
  • the flow guide element With the flow guide element, a rotational component about the longitudinal axis of the cartridge interior can be added to the longitudinal flow of the water through the cartridge interior.
  • the flow is a rotating, circulating or diffuse longitudinal flow.
  • Which type of longitudinal flow is present depends on the design of the flow-guiding element.
  • the flow guide element prevents areas can form in the cartridge interior, which have a low flow rate or only a very small flow. This is especially true for air bubbles that can form on the bare wire heating coil. These are moved on account of the flow component caused by the flow component of the water and directed to the outlet. This prevents the bare wire heating coil from being heated or even overheating at the point where the bubble originates and causing irreversible damage.
  • the flow guide element therefore supports the prevention of passive zones.
  • a further advantageous embodiment is characterized in that the or each flow guide element between the Wasserumlenkiatan, behind the Wasserumlenkelement is arranged in front of the bare wire heating coil or in front of the Wasserumlenkelement behind the bare wire heating coil.
  • This embodiment of the blank wire heater combines the advantages of the flow guide element with the advantages of Wasserumlenkiano. Passive zones are thus effectively prevented in the entire or in the relevant cartridge interior. This applies both to the inlet area and / or the outlet area and to the area of the cartridge interior between the two aforementioned areas or next to the corresponding area. Thanks to this configuration, the blank wire heater is operated particularly safe and reliable.
  • this embodiment has the advantage that the recordings on the end faces of the functional element particularly simple by the flow guide element connected to each other. As a result, the functional element or the heating cartridge or the blank wire heater is made particularly compact.
  • a further advantageous embodiment of the blank wire flow heater is characterized in that the or each flow guide element is arranged in a helical interior of the bare wire heating coil.
  • the spiral interior is the space spanned by the bare wire heating coil.
  • a further advantageous embodiment of the blank wire flow heater is characterized in that the or each flow guide element is designed helically.
  • the longitudinal flow of water through the cartridge interior is particularly simply added a rotational component about the longitudinal axis of the cartridge interior to maintain a rotating longitudinal flow of the water.
  • a flow is particularly well suited to prevent passive zones.
  • a further advantageous embodiment of the blank wire flow heater is characterized in that the functional element and / or the or each flow guide element is designed as a multipart plug-in element.
  • the functional element or the or each flow guide element are thus assembled from several elements. This ensures a particularly simple assembly of the functional element or of the at least one flow element.
  • the bare wire heating coil is particularly easily brought between the receptacles of the functional element in order to connect them with the receptacles in such a way that they hold the ends of the bare wire heating coil.
  • a further advantageous embodiment of the blank wire heater is characterized in that the parts of the plug element form a plug-in connection, the connecting plane is aligned longitudinally.
  • the length of a cartridge interior is greater than its width or diameter.
  • a further advantageous embodiment of the blank wire flow heater is characterized in that the parts of the plug element have a correspondingly configured outer contour.
  • the plurality of flow guide elements can form a continuous and / or continuous guide, so that a caused by the flow guide elements flow resistance is minimized.
  • a bare wire water heater 2 for heating water with a heating cartridge 4 is shown.
  • the bare-wire instantaneous water heater 2 shown is an exemplary construction in which the heating cartridge 4 is integrated into a base body 6 of the blank wire flow heater 2 or arranged as an attachment on the base body 6.
  • Other known from the prior art connection options are also conceivable.
  • FIG. 2 For heating water, the blank wire heater 2, a heating cartridge 4 with a cartridge interior 8 for the passage of water, a water inlet 10 and a water outlet 12, which are arranged on the shell side of the heating cartridge 4, and a functional element 14, the one Blankdrahtsammlungplanetaryl 16 and at the end faces receptacles 18 which hold the ends 20 of the bare wire heating coil 16.
  • each a Wasserumlenkelement 22 is arranged in the flow direction S of the water in the inlet region of the cartridge interior 8 in front of the bare wire heating coil 16 and in the outlet region 40 of the cartridge interior 8 behind the bare wire heating coil 16.
  • Fig. 2 it is in the heating cartridge 4 in particular a cylindrical container with a cartridge interior 8 for flowing through the water to be heated, which is also configured cylindrically.
  • the cartridge interior 8 is the space enclosed by the heating cartridge 4, through which the water to be heated flows.
  • receptacles 18 are provided, which are the ends 20 of the bare wire heating coil 16 hold.
  • Corresponding recordings are for example from the patent document DE 102 21 026 known.
  • Such receptacles 18 are arranged opposite one another on the end faces 34 of the functional element 14. As a result, a space-saving arrangement of the bare wire heating coil 16 within the heating cartridge 4 is possible.
  • the receptacles 18 are designed for clamping retention of the bare wire heating coil 16, in particular in the region of the free ends 20.
  • the ends 20 of the bare wire heating coil 16 are inserted into the receptacles 18 or clamped by them.
  • the bare wire heating coil 16 is usually a thin, bare wire wound as a bare wire heating coil. This bare wire is particularly well suited to transfer energy to the water to be heated, which flows through the cartridge interior 8 of the heating cartridge 4.
  • the blank wire heater 2 a water inlet 10 and a water outlet 12, which are arranged on the shell side of the heating cartridge 4.
  • a heating cartridge 4 basically has two end faces 24, 26 and a shell side 36.
  • the water to be heated flows through the water inlet 10 into the cartridge interior 8.
  • the water meets the water deflecting element 22 arranged in the inlet region of the cartridge interior 8 in front of the bare wire heating coil 16 in the flow direction S of the water in the inlet region of the cartridge interior 8.
  • This water deflecting element 22 directs this through the inlet 10 in the inlet direction Z incoming water in a longitudinal direction L of the cartridge interior to.
  • This Wasserumlenkelement 22 serves as a guide of the water from a feed direction Z in a longitudinal direction L of the cartridge interior 8. It is therefore contemplated that the Wasserumlenkelement 22 is adjusted before the bare wire heating coil 16 to the water inlet 10.
  • this Wasserumlenkelement 22 is adapted to the water outlet 12. In other words, protrudes at least a portion of the respective Wasserumlenkelements 22 via the water inlet 10 and via the water outlet 12, without closing this in each case, but instead to form a guide for the water.
  • a functional element 14 has been found to be particularly advantageous, which is embodied in a modular manner and insertable into the heating cartridge 4.
  • the advantage is further increased if functional element 14 has water deflecting element 22 or all water deflecting elements 22.
  • the or each Wasserumlenkelement with the module-like functional element 14 in the heating cartridge 4 can be inserted.
  • the functional element 8 is correspondingly adapted and / or configured. This relates in particular to the diameter and / or the length of the functional element 14. Due to the modular design of the functional element 14, this can also be installed or removed as a module in the heating cartridge 4.
  • this embodiment allows an end face 24 of the heating cartridge is substantially closed. Only an opening for performing an electrical connection means 28 may be provided.
  • the opposite end face 26 is provided with an opening 30.
  • the module-like functional element 14 in the heating cartridge 4 can be inserted. Due to the shell-side arrangement of the water inlet 10 and the water outlet 12 on the heating cartridge 4, the frontal opening 30 of the heating cartridge 4 at least substantially independently of the water inlet 10 and the water outlet 12 can be configured.
  • the functional element 14 can have corresponding mechanical sealing means 32.
  • the functional element 14 has electrical connection means 28.
  • the electrical connection means 28 protrude beyond both end faces 34 of the functional element 14.
  • the functional element 14 can be inserted together with the bare wire heating coil 16 into the heating cartridge 4 through the opening 30 provided therefor, so that the two electrical connection means 28 to both End faces 24, 26 of the heating cartridge 4 are accessible from the outside.
  • the electrical connection means are secured from the outside by means of nuts.
  • the functional element 14 can be removed together with the bare wire heating coil 16 as a unit from the heating cartridge 4.
  • each Wasserumlenkelement 22 forms an end-side inner wall 42 of the cartridge interior 8.
  • the heating cartridge 4 and / or the functional element 14 to design particularly compact, it may additionally or alternatively be provided that the or each Wasserumlenkelement 22 at the respective end face 34th of the functional element 14 is combined with the respective receptacle 18.
  • each of the receptacle 18 and the corresponding Wasserumlenkelement 22 form an integral part of the functional element 14th
  • the functional element 14 extends from the first receptacle 18 to the second receptacle 18.
  • the two receptacles 18 can be connected to each other by a connecting element 45 of the functional element 14.
  • a cylindrical, elongate element 45 From the state of the art DE 102 21 026 It is known that the two receptacles 18 are interconnected by a cylindrical, elongate element 45.
  • This element may be formed as a half tube, which at least partially envelops the bare wire heating coil 16 in the mounted state.
  • This known connection element 45 is therefore arranged outside the bare wire heating coil 16.
  • the water to be heated flowing through the heating cartridge 4 thus has a minimum flow velocity in order to ensure that resulting air or water vapor bubbles are transported along by the flowing water and leave the cartridge interior 8 through the water outlet 12. If a water consumer has a lower water requirement, which results in a flow velocity of, for example, less than 80 cm / sec, there is a risk of overheating damage to the bare wire heating coil 16.
  • the bare wire heating coil 16 which usually consists of a wound into a spiral bare wire is inserted or inserted by means of the functional element 14 in the heating cartridge 8.
  • the flow velocity of the water in the spiral interior ie the Of the bare wire heating coil 16 spanned area
  • the flow velocity of the water outside the bare wire heating coil 16 ie the area between the bare wire heating coil 16 and the corresponding shell-side inner surface 44 of the heating cartridge 4 and the cartridge interior 8
  • the flow rate of the water to be heated inside and outside the bare wire heating coil 16 is largely the same.
  • the aforementioned goal can be achieved by the diameter of the bare wire heating coil 16 and the diameter of the cartridge interior 8 are adapted to each other.
  • the cartridge interior geometry often can not be adapted in a corresponding manner to the diameter of the bare wire heating coil 16 for reasons of space.
  • the functional element 14 has at least one flow guide element 46 for guiding the water in the cartridge interior 8.
  • the flow guide element 46 is adapted in such a way as to displace the water flowing into the cartridge interior 8 from an at least substantially linear flow or longitudinal flow into a rotating and / or diffuse flow.
  • the flow guide element 46 preferably extends over the entire or at least substantially the entire length (in the longitudinal direction L) of the bare wire heating coil 16. In the area of the bare wire heating coil 16, there is thus an at least substantially uniform flow of the water to be heated.
  • the mean value of the flow velocity in the longitudinal direction L is preferred meant the water to be heated.
  • the flow guide element 46 is imagined and / or aligned to add a rotational component about the longitudinal axis L of the cartridge interior to the longitudinal flow of the water to be heated through the cartridge interior 8.
  • the or each flow guide element 46 is disposed between the Wasserumlenkettin 22, behind the Wasserumlenkelement 22 before the bare wire heating coil 16 or before the Wasserumlenkelement 22 behind the bare wire heating coil 16. In this way it can be ensured in the entire or relevant cartridge interior 8 in a particularly simple and secure manner that air and / or water vapor bubbles are transported out of the cartridge interior 8.
  • a particularly compact embodiment of the functional element 14, the heating cartridge 4 and / or the blank wire flow heater 2 is achieved by the or each flow guide element 46 is disposed in the spiral interior of the bare wire heating coil 16.
  • This embodiment is particularly advantageous for instantaneous water heaters with low flow velocities of less than 80 cm / sec, 45 cm / sec, 30 cm / sec or 20 cm / sec. Because of the arrangement of the or each flow-guiding element 46 in the spiral interior, the diameter of the bare wire heating coil 16 can be made larger than in a comparable coil without a corresponding flow guide element 46.
  • the or each flow-guiding element 46 and / or the or each Wasserumlenkelement 22 is designed to be electrically insulating.
  • Correspondingly usable plastics also have the advantage that the functional element is particularly light.
  • such a configuration is suitable the flow guiding element 46 also for holding the bare wire heating coil 16.
  • the or each flow guide element 46 is designed helically.
  • the flow-guiding element 46 can have helically protruding water-conducting elements. Such elements can be structurally particularly easily adapted to the desired effect of a rotating longitudinal flow. If the bare wire heating coil 16 is also held and / or supported by the at least one flow guiding element 46, the contact between the or each flow guiding element 46 and the bare wire heating coil 16 is at least substantially only punctiform and / or linear. Due to the passing water, which is influenced by the flow guide element 46, it comes at a contact area between the bare wire heating coil 16 and the at least one flow guide element does not overheat the water to be heated or the bare wire heating coil 16.
  • a particularly simple embodiment provides that the bare wire heating coil 16 and the at least one flow guide element 46 have different pitch angles and / or opposite turns directions. This can be particularly easily ensured that the bare wire heating coil 16 is at least substantially aligned cylindrically and ensures a particularly good heat transfer to the water to be heated.
  • the functional element 14 is disposed in the spiral interior of the bare wire heating coil 16 between the Wasserumlenkiatan 22, and the outer diameter of the Wasserumlenkiata 22 and / or the holders 18 is greater than the inner diameter of the bare wire heating coil 16, so there are several ways how the functional element 14 in a Such a configuration can be produced.
  • One possibility is to wind the bare wire heating coil 16 spirally around the flow guide element 46 and to connect the ends thereof to the receptacles 18 and / or the corresponding electrical connection elements 28.
  • the effort is relatively large and the production accuracy is relatively low. It is therefore preferably provided that the functional element 14 and / or the or each flow guide element 46 are formed as a multi-part plug-in element.
  • the bare wire heating coil 16 very precisely on corresponding devices before their assembly.
  • the necessary components can be brought together and ultimately also put together thanks to the plug-in elements.
  • the plug-in elements can corresponding fast connection means, for example, having a tongue and groove connection.
  • a particularly advantageous embodiment of the functional element 14 is in Fig. 3 shown. Shown are two mutually corresponding flow guide elements 46, which are designed as a multipart plug-in element. Since the functional element 14 has these flow guide elements 46, this too is designed as a multipart plug-in element.
  • the parts of the plug element form a plug connection whose connection plane is aligned longitudinally. Its longitudinal direction corresponds to the longitudinal direction L of the cartridge interior 8. Such a connector is particularly stable and resistant to a possible bending.
  • the quick connect elements 48a, 48b in the present case a tongue and groove joint).
  • the two flow guide elements 46 can each be inserted from different directions into the spiral interior of the bare wire heating coil 16 in such a way that a plug connection between the two flow guide elements 46 is formed.
  • the ends of the bare wire heating coil 20 may then be associated with the receptacles 18 to hold them.
  • FIG. 4 illustrated cross section of the heating cartridge 4 in a section along a vertical plane shows how the flow guide element 46 is arranged as a multi-part plug-in element in the helical interior of the bare wire heating coil 16. It can also be seen that the parts of the plug-in element have a corresponding outer contour and / or surface. The outer contour or the surface thus has no jumps caused by the plug-in elements. Rather, the surface contours are continued uninterrupted by the multiple plug-in elements. This applies in particular also to the helical water guide elements 50.

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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)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Resistance Heating (AREA)

Claims (14)

  1. Chauffe-eau instantané à fil nu (2) destiné à chauffer de l'eau à l'aide d'une cartouche de chauffe (4) présentant un espace intérieur de cartouche (8) pour la circulation d'eau, une arrivée d'eau (10) et une évacuation d'eau (12) disposées côté enveloppe sur la cartouche de chauffe (4) ainsi qu'un élément fonctionnel (14) présentant un filament de chauffage à fil nu (16) et des logements (18) maintenant les extrémités du filament de chauffage à fil nu (16), un premier élément de déviation d'eau (22) étant disposé dans le sens d'écoulement (S) de l'eau dans la zone d'entrée de l'espace intérieur de cartouche (8), devant le filament de chauffage à fil nu (16),
    caractérisé en ce que
    l'élément fonctionnel (14) présente des logements (18) sur les faces frontales (34), un second élément de déviation d'eau (22) étant disposé dans le sens d'écoulement (S) de l'eau dans la zone de sortie (40) de l'espace intérieur de cartouche (8), derrière le filament de chauffage à fil nu (16), et chaque élément de déviation d'eau (22) constituant une paroi interne frontale (42) de l'espace intérieur de cartouche (8).
  2. Chauffe-eau instantané à fil nu (2) selon la revendication précédente, caractérisé en ce que le premier élément de déviation d'eau (22) est disposé devant le filament de chauffage à fil nu (16) sur l'arrivée d'eau (10).
  3. Chauffe-eau instantané à fil nu (2) selon l'une des revendications précédentes, caractérisé en ce que le second élément de déviation d'eau (22) est disposé derrière le filament de chauffage à fil nu (16) sur l'évacuation d'eau (12).
  4. Chauffe-eau instantané à fil nu (2) selon l'une des revendications précédentes, caractérisé en ce que l'élément fonctionnel (14) est configuré de façon modulaire et peut être introduit dans la cartouche de chauffe (4).
  5. Chauffe-eau instantané à fil nu (2) selon l'une des revendications précédentes, caractérisé en ce que l'élément fonctionnel (14) comprend les éléments de déviation d'eau (22).
  6. Chauffe-eau instantané à fil nu (2) selon l'une des revendications précédentes, caractérisé en ce que chaque élément de déviation d'eau (22) est conçu de forme arquée, cunéiforme ou concave.
  7. Chauffe-eau instantané à fil nu (2) selon l'une des revendications précédentes, caractérisé en ce que chaque élément de déviation d'eau (22) disposé sur une face frontale (34) respective de l'élément fonctionnel (14) est combiné à un logement (18) respectif.
  8. Chauffe-eau instantané à fil nu (2) selon l'une des revendications précédentes, caractérisé en ce que l'élément fonctionnel (14) présente au moins un élément de guidage d'écoulement (46) destiné à guider l'eau dans l'espace intérieur de cartouche (8).
  9. Chauffe-eau instantané à fil nu (2) selon la revendication précédente, caractérisé en ce que l'élément ou chaque élément de guidage d'écoulement (46) est placé entre les éléments de déviation d'eau (22), derrière l'élément de déviation d'eau (22) placé devant le filament de chauffage à fil nu (16) ou devant l'élément de déviation d'eau (22) placé derrière le filament de chauffage à fil nu (16).
  10. Chauffe-eau instantané à fil nu (2) selon l'une des revendications 8 ou 9, caractérisé en ce que l'élément ou chaque élément de guidage d'écoulement (46) est placé dans un espace intérieur en spiral du filament de chauffage à fil nu (16).
  11. Chauffe-eau instantané à fil nu (2) selon l'une des revendications 8 à 10, caractérisé en ce que l'élément ou chaque élément de guidage d'écoulement (46) est de forme hélicoïdale.
  12. Chauffe-eau instantané à fil nu (2) selon l'une des revendications 8 à 11, caractérisé en ce que l'élément fonctionnel (14) et/ou l'élément ou chaque élément de guidage d'écoulement (46) est conçu comme un élément mâle en plusieurs parties.
  13. Chauffe-eau instantané à fil nu (2) selon la revendication précédente, caractérisé en ce que les parties de l'élément mâle forment une connexion enfichable dont le plan de connexion est placé dans le sens de l'axe longitudinal.
  14. Chauffe-eau instantané à fil nu (2) selon l'une des revendications 12 ou 13, caractérisé en ce que les parties de l'élément mâle présentent un contour extérieur correspondant à celui des autres.
EP11190470.2A 2011-11-24 2011-11-24 Chauffe-eau instantané à fil nu Active EP2597394B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11190470.2A EP2597394B1 (fr) 2011-11-24 2011-11-24 Chauffe-eau instantané à fil nu
PL11190470T PL2597394T3 (pl) 2011-11-24 2011-11-24 Przepływowy ogrzewacz z nieizolowanym drutem grzewczym
PCT/EP2012/073393 WO2013076209A1 (fr) 2011-11-24 2012-11-22 Chauffe-eau instantané à fil nu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11190470.2A EP2597394B1 (fr) 2011-11-24 2011-11-24 Chauffe-eau instantané à fil nu

Publications (3)

Publication Number Publication Date
EP2597394A1 EP2597394A1 (fr) 2013-05-29
EP2597394A9 EP2597394A9 (fr) 2013-08-21
EP2597394B1 true EP2597394B1 (fr) 2015-04-01

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EP11190470.2A Active EP2597394B1 (fr) 2011-11-24 2011-11-24 Chauffe-eau instantané à fil nu

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EP (1) EP2597394B1 (fr)
PL (1) PL2597394T3 (fr)
WO (1) WO2013076209A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1977156A (en) * 1930-12-01 1934-10-16 Russell U Staley Electric heater and thermostat
US1905439A (en) * 1931-07-31 1933-04-25 Nat Electric Heating Co Inc Electric fluid heating apparatus
GB435160A (en) * 1935-01-08 1935-09-16 Benjamin James Bennett Improvements in and relating to electric hot water heaters, electric geysers and like liquid heaters
GB577118A (en) * 1944-02-29 1946-05-06 Oskar Kriwaczek Improvements in electric heaters for water and other liquids
US3968346A (en) * 1973-06-01 1976-07-06 Cooksley Ralph D Method and apparatus for electrically heating a fluid
US4762980A (en) * 1986-08-07 1988-08-09 Thermar Corporation Electrical resistance fluid heating apparatus
DE29603842U1 (de) * 1996-03-01 1997-03-27 Forbach GmbH, 97616 Bad Neustadt Elektrisch beheizter Durchlauferhitzer
DE20107976U1 (de) 2001-05-03 2001-08-23 Gerdes oHG, 21337 Lüneburg Adapter für Heizwendel

Also Published As

Publication number Publication date
EP2597394A9 (fr) 2013-08-21
EP2597394A1 (fr) 2013-05-29
PL2597394T3 (pl) 2015-08-31
WO2013076209A1 (fr) 2013-05-30

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