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WO2018127396A2 - Chauffe-eau instantané - Google Patents

Chauffe-eau instantané Download PDF

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Publication number
WO2018127396A2
WO2018127396A2 PCT/EP2017/083339 EP2017083339W WO2018127396A2 WO 2018127396 A2 WO2018127396 A2 WO 2018127396A2 EP 2017083339 W EP2017083339 W EP 2017083339W WO 2018127396 A2 WO2018127396 A2 WO 2018127396A2
Authority
WO
WIPO (PCT)
Prior art keywords
heater
inner body
water heater
flow
outer shell
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.)
Ceased
Application number
PCT/EP2017/083339
Other languages
German (de)
English (en)
Other versions
WO2018127396A3 (fr
Inventor
Heinz Vetterli
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.)
Franke Kaffeemaschinen AG
Original Assignee
Franke Kaffeemaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Franke Kaffeemaschinen AG filed Critical Franke Kaffeemaschinen AG
Publication of WO2018127396A2 publication Critical patent/WO2018127396A2/fr
Publication of WO2018127396A3 publication Critical patent/WO2018127396A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/4485—Nozzles dispensing heated and foamed milk, i.e. milk is sucked from a milk container, heated and foamed inside the device, and subsequently dispensed from the nozzle
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/54—Water boiling vessels in beverage making machines
    • A47J31/542—Continuous-flow heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/215—Temperature of the water before heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric heaters

Definitions

  • the invention relates to a water heater for heating a liquid flowing through, with an inner body extending symmetrically along a longitudinal axis, which has a heater, and with an outer casing surrounding the inner body.
  • a flow channel surrounding the inner body and circumscribed by the outer shell is formed for the liquid flowing through.
  • the invention relates to a fully automatic beverage dispenser for dispensing hot drinks, with a brewing group for preparing freshly brewed coffee drinks and a milk system for the preparation of milk or mi I drinks containing.
  • a cylindrical water heater which is formed of two concentrically arranged around an axis layers.
  • the outer layer comprises a helical flow channel incorporated in a wall of the outer layer.
  • the inner layer of the water heater contains an electric heating coil.
  • the instantaneous water heater is designed to heat water, milk or other liquids.
  • the disadvantage of the operation of said continuous flow heater for heating of milk is that residues of the milk settle in the narrow and long spiral-shaped channel and can cake there, so that they can not be removed simply by rinsing with a milk cleaner.
  • the outer layer formed from two concentric sleeves can also be pulled apart in the axial direction, so that the channel is accessible for cleaning.
  • this requires an expansion of the water heater and proves to be less maintenance friendly.
  • the concentric sleeves wear on frequent pulling apart and can be easily damaged.
  • the invention is therefore based on the object to provide an improved instantaneous water heater, which is particularly suitable for use in the heating of milk, and allows easy maintenance and cleaning of the flowed through by the liquid to be heated flow channel.
  • the invention provides that the outer shell is composed of at least two divisible in the direction of the longitudinal axis segment shells. In this way, the outer shell for cleaning and maintenance purposes much easier to remove from the inner body, if necessary, without having to completely remove the water heater. Due to the elimination of the axial removal of the outer shell is only a small Freirau m u m the water heater needed when removing the outer shell and thus also for the maintenance or cleaning of the helical flow channel.
  • the instantaneous water heater according to the invention can be installed in a space-saving manner in a hot drinks machine, in particular in a hot drinks machine according to claim 15.
  • the outer shell may be made of a plastic, for example in the form of an injection molded part, but may be made of metal. In this case, the outer shell advantageously for reasons of weight savings on a relatively small wall thickness and a low thermal mass.
  • An inner body can preferably be made of a material with high thermal conductivity in at least one subarea, in order to allow good heat transfer from the heater to the liquid to be heated.
  • an elastomeric seal is arranged between the inner body and the outer casing, which seals the helical flow channel against the outer casing.
  • the inner body has a cylindrical shape and the flow channel is formed as a helical groove in the outer circumferential surface of the inner body.
  • an elastic sleeve is additionally arranged between the inner body and the outer shell, which is pulled over the inner body and seals the flow channel peripherally against the outer shell. In this way, an easy-to-maintain water heater is realized, which is easy to clean by opening the segmental shells and strip the elastic sleeve.
  • the elastic sleeve itself can easily be turned to clean its inner surface in contact with the liquid.
  • the inner body is provided in the region of the flow channel with a non-stick coating, preferably a coating of polytetrafluoroethylene or silicone or a ceramic coating.
  • a non-stick coating preferably a coating of polytetrafluoroethylene or silicone or a ceramic coating.
  • the heater comprises an electric heating coil.
  • Such a heating coil can be well adapted to the shape of the helical flow channel, whereby the heat transfer from the heater to the liquid to be heated can be done more efficiently.
  • a helical turn of the electric heating coil corresponds to a helical pitch of the flow channel. In other words, heating coil and flow channel can be arranged parallel to one another.
  • the heating coil is arranged in a region of the inner body which is situated radially closer to the flow channel than to the longitudinal axis (center axis) of the flow heater.
  • the thermal losses can be reduced along a planteleitpfad from the heating coil to the liquid to be heated.
  • the water heater by at least two communicating with the flow channel connections for passing the liquid.
  • the at least two connections can be arranged on the outer shell of the water heater.
  • the outer shell is composed of two half-shells. This design of the outer shell can allow a particularly simple cleaning and maintenance of the flow channel.
  • the two half shells preferably have corresponding sealing surfaces, preferably abutment edges extending parallel to the longitudinal axis of the flow heater, on which the half shells are joined together in a fluid-tight manner.
  • H can be arranged in particular a seal between the sealing surfaces.
  • the segment shells are releasably sealingly connected to one another by means of bracing means.
  • the segment be screwed against each other with screws.
  • the clamping devices By means of the clamping devices, the segmental shells can be connected to each other in a simple manner and with comparatively little time after cleaning or maintenance of the flow channel again.
  • Suitable bracing devices are, for example, screws, screw-nut combinations, clamps, clamps or the like.
  • a tongue-and-groove toothing can also be provided on the sealing surfaces of the segmental shells.
  • the inner body comprises a heating element and an insulating body.
  • the radiator is arranged in an outer region of the inner body and contains the heating.
  • the insulating body is arranged in an inner region of the inner body. Its task is to thermally insulate the radiator, in particular the heater, radially inwards. A heat conduction in the inner region of the flow heater contributes not or only slightly to the heating of the liquid in the flow channel and is therefore to be regarded as a loss process.
  • the insulating body ensures that the heat output delivered by the heater is transmitted essentially as intended to the liquid flowing through the helical flow channel. It also reduces the thermal mass, which must be first warmed up when turning on the water heater, so that the lead time is shortened.
  • the insulating body may be made for example of a heat-resistant, thermally insulating ceramic material. But it is also possible to form the insulating body as a hollow tube or the like, wherein the inner tube of the hollow tube, for example, can be filled with air or a thermally less conductive inert gas.
  • the I solierEff is not only thermal, but also electrically insulating. This can facilitate electrical contacting of the water heater or the power line through the heater.
  • the radiator may be made of a single electrically insulating and thermally conductive material, for example of ceramic, in which the heater is inserted or embedded and on the outside of a helical recess is formed, which in conjunction with the outer shell of the Throughflow heater forms the flow channel for the liquid to be heated.
  • an outer region of the heating element, which comprises the helical recess as a type of sleeve made of a stable material with high thermal conductivity, such as, for example, aluminum or copper.
  • the inner portion of the heater in which the heater is disposed may be filled with a (compacted) powdery material such as magnesium oxide, which functions as an electrical insulator to prevent power conduction to the outside of the inner body.
  • the heater may be formed as a wound around the insulating heating wire.
  • a temperature of the liquid to be heated can be changed at a constant heat output of the heater, that a flow rate of the liquid, for example by means of a continuous valve or by regulating the pumping capacity of the fluid pump, is regulated.
  • a flow rate of the liquid for example by means of a continuous valve or by regulating the pumping capacity of the fluid pump, is regulated.
  • An increase in the flow rate leads to a lower final temperature of the liquid after flowing through the water heater.
  • a reduction in the flow rate leads to a higher end temperature.
  • the water heater may comprise at least one temperature sensor for determining a temperature of the liquid to be heated in order to be able to carry out a desired-actual value comparison for the temperature of the liquid.
  • a temperature sensor upstream and downstream of the helical flow channel is arranged to be able to determine the running temperature and final temperature of the liquid flowing through the water heater.
  • the or the temperature sensors are connected to a control unit in such a way that the heating power of the heating or the flow rate for the liquid is predetermined by the control unit depending on the temperature or temperatures of the liquid to be heated by means of the or the temperature sensors , Can herewith an even more accurate adjustment of the temperature increase of the liquid can be made possible by the water heater.
  • the water heater is designed as a plug-in or plug-in module.
  • it has an electrical connector for the electrical connection of the heater.
  • the line connections for the liquid flowing through are provided with a pluggable quick-release system, wherein quick-release system and connectors are arranged in the same direction, so that the water heater can be plugged onto corresponding mating connections to a support assembly.
  • the water heater is also provided with a handle on which it can be manually withdrawn from its anchorage from the mating connections of the carrier assembly.
  • a further aspect of the invention relates to a hot drinks machine having a milk system for preparing milk or milk-containing hot drinks, the milk system having a water heater of the type described above.
  • a continuous flow heater can serve for a milk system of a coffee machine for preparing freshly brewed coffee drinks.
  • Such a coffee machine has a brewing group for preparing freshly brewed coffee drinks.
  • the milk system can be added to the coffee drinks heated milk and / or milk foam, z. B. for the preparation of milk coffee, cappuccino or latte macchiato, or in addition to coffee drinks milk drinks, such as cocoa, prepared.
  • Figure 1 is a side view of a flow heater according to the invention with upwardly and downwardly open outer shell;
  • Figure 2 is a longitudinal section of the flow heater of Figure 1 in the sectional plane DD;
  • Figure 3 is a side view of the flow heater according to the invention in the assembled state
  • FIG. 4 shows a longitudinal section of the continuous flow heater from FIG. 3 in the sectional plane C-C;
  • FIG. 5 shows a cross-section of the continuous flow heater from FIG. 3 in the sectional plane E-E;
  • FIG. 6 shows the instantaneous water heater from FIG. 3 in an isometric view
  • Figure 7 shows a water heater of another embodiment, which is designed as a plug-in module
  • Figure 8 is an exploded view of a water heater in a third
  • Figure 9 is an isometric view of the flow heater of Figure 8.
  • Figure 1 0 is a representation of the water heater of Figure 8 from another
  • FIG. 1 1 shows a longitudinal section through the flow heater of Figure 8.
  • FIG. 1 shows a flow heater 1 according to the invention, comprising an inner body 2 and an outer shell 3 divided into two half shells 3a, 3b.
  • the outer shell 3 forms as it were a housing for the water heater.
  • the two half-shells 3a, 3b of the outer shell 3 are formed smoothly on their inner sides 4a, 4b facing the inner body 2 and in the assembled state form a type of hollow cylinder which has a smooth inner surface. Furthermore, on the half shells 3a, 3b clamping device in shape of screws 5a, 5b, 5c, 5d with corresponding mating threads 5a ', 5b', 5c ', 5d' shown (in Figure 1, only two screws 5a, 5b can be seen). With the screws 5a, 5b, 5c, 5d, the two half-shells 3a, 3b are screwed together. The water heater 1 is then ready.
  • the two half-shells 3 a, 3 b each have a connection 6 a, 6 b for conducting and discharging the liquid to be heated, wherein the flow direction through the instantaneous water heater is arbitrary in the exemplary embodiment.
  • the cylindrical inner body 2 has on its outer wall a helically circumferential ribbing. Together with the two half-shells 3a, 3b placed on the inner body 2 and interconnected, the helical ribbing 7 forms a helical flow channel through which the liquid to be heated flows.
  • the inner body is cylindrical and extends along its longitudinal axis L. At its end faces 10, the inner body has a respective annular projection 8a, 8b. These projections limit the helical flow channel formed by the ribbing 7 in the axial direction.
  • the two projections 8a, 8b each have an annular circumferential groove, in each of which a sealing ring 9a, 9b is inserted, which ensures a seal between inner body 2 and outer shell 3 and thus for an axial sealing of the flow channel.
  • three electrical contacts 1 1 a, 1 1 b, 1 1 c are arranged on the inner body 2 (1 1 b is not shown in FIG. 1), which is used to heat a body 2 in the inner body serve heating located.
  • the contacts 1 1 a, 1 1 c are connected to a suitable power source; the contact 1 1 b serves as a protective conductor for a possible fault current. It would also be possible to provide the electrical contact on opposite end sides of the inner body 2.
  • Figure 1 shows the water heater in the disassembled state, in which therefore the two half-shells 3a, 3b of the outer shell 3 are detached from each other and removed from the upper body 2 upwards and downwards.
  • the disassembly is done for example for the purpose of maintenance and cleaning.
  • the helical ribbing 7 or the complete flow mkananal so also the inner pages 4a, 4b of the two half-shells 3a, 3b, in a simple manner machanic, z. B. with a brush, to be cleaned.
  • To remove the Au walkedhülle 2 is only relatively little space needed around the water heater 1.
  • FIG. 2 shows the instantaneous water heater 1 according to FIG. 1 in a cross section in the sectional plane D-D.
  • Two of the four screws 5a, 5c and the corresponding mating threads 5a ', 5c' on the opposite half-shell can be seen in FIG.
  • On the lower half-shell 3b, one of the two connections 6b can be seen.
  • the radiator 12 comprises, viewed radially from the inside to the outside, a heating layer 14, in which a heater in the form of a heating coil 1 5 is inserted, and a metallic outer layer 1 6, formed on the outside of the helical ribbing 7 - for example, embossed - is ,
  • the heating layer 14 is formed of a material having high thermal conductivity, for example, magnesium oxide, and serves for heat transfer from the heating coil 1 5 in the metallic outer layer 1 6.
  • the heater 1 5 as a wound around the insulating body 1 3 heating wire formed be .
  • the insulating body 1 3 in the inner of the inner body 2 consists of a thermally and electrically insulating material, for example of a heat-resistant plastic.
  • the thermal insulating ability of the insulating body 1 3 ensures that a large part of the heat generated in the heating coil 1 5 is intended in the helical recess 7, more precisely in the liquid to be heated and thus the water heater has a low thermal mass, so that he heats up very quickly.
  • the electrical insulation capability enables or facilitates the electrical contacting of the heating coil 1 5 via the electrical contacts 1 1 a, 1 1 b, 1 1 c.
  • Figures 3 to 6 show the flow heater 1 in its assembled state for operation.
  • the two half-shells 3a, 3b are connected to each other and surround the inner body 2 in a fluid-tight manner.
  • the partial damage In this case, the outer boundary of the flow channel formed by the helical ribbing 7 of the inner body 1 forms.
  • FIG. 3 is a side view of the instantaneous water heater 1 in a comparable manner as shown in FIG. 1, with the difference that the two half-shells 3 a, 3 b, as mentioned, enclose the inner body 2.
  • the two half-shells 3 a, 3 b have sealing surfaces which correspond to one another and, when assembled, lie on one another and form a fluid-tight connection between the two half-shells 3 a, 3 b. It can be provided on the abutment edges 1 8a, 1 8b additional seal. In addition, may be formed on the corresponding sealing surfaces extending in the direction of the longitudinal edges N-spring connection.
  • the length of the flow heater 1, without the invention being limited thereto, is about 1 00 mm with a diameter of about 70 mm.
  • the size of the water heater is in this case adapted in particular to the intended volume flow of water to be heated or milk, which z. B. for a typical automatic coffee machine in the order of 1 00 to 1 000 ml / min.
  • FIG. 4 shows the instantaneous water heater 1 from FIG. 3 in a longitudinal section in the sectional plane C-C.
  • all four screws 5a, 5b, 5c, 5d can be seen, which connect the two half-shells 3a, 3b to each other during operation.
  • an opening 1 7 extends over approximately one half of the longitudinal extent of the inner body 2 in this into it.
  • a holding means (not shown) can be inserted, by means of which the water heater 1 can be held or fastened.
  • FIG. 5 shows the instantaneous water heater 1 from FIG. 3 in a cross section in the sectional plane EE. It can be seen in this view that the opening 17 has a circular cross-section with a lateral groove. In these If necessary, a pin with a suitable feather key can be inserted without rotation. Thus, the water heater can not rotate relative to its support verd.
  • FIG. 6 shows a perspective view of the instantaneous water heater 1 from FIG. 3. In this view, the three electrical contacts 1 1 a, 1 1 b, 1 1 c can be seen.
  • the instantaneous water heater 1 can be part of a milk system of a fully automatic coffee machine and serve for heating milk or milk foam for preparing milk-containing coffee drinks such as cappuccino or latte macchiato.
  • a suitable milk system is described, for example, in document EP2987435A1, to which reference is made for the avoidance of unnecessary repetition.
  • the milk system has a milk pump, which sucks milk from a milk container arranged in a refrigerator.
  • the suction line opens an air line provided with a valve, so that air can be sucked together with the milk at the same time. Behind the pump then the water heater 1 can be arranged.
  • warm milk may be dispensed when the air valve is closed, or warm milk froth when the air valve is opened.
  • FIG. 7 A further exemplary embodiment is shown in FIG. 7, in which the instantaneous water heater 1 is designed as a plug-in module or plug-on module in a further development of the above-described design.
  • both Ansch connections 6a, 6b are arranged for the milk to be heated on the left in the figure housing shell 6a and provided with quick fasteners, which can be plugged onto corresponding mating connections 22a, 22b of a quick-release system, which are arranged on the coffee machine.
  • a handle 20 is attached to which the plugged on the terminals 22a, 22b water heater can be pulled out of its anchorage.
  • the electrical contacts 1 1 1 a, 1 1 b, 1 1 c are integrated in a three-pole electrical plug-in system 1 1, which corresponds to a corresponding electrical see plug connection 21 is attached to the coffee machine.
  • Electrical plug-in system 1 1, 21 and quick-release system 6 a, 6 b, 22 a, 22 b are shown here only schematically.
  • the water heater can be removed for cleaning quickly and without tools from the coffee machine, opened for cleaning in the manner described above and then used again in the coffee machine.
  • FIGS. 8 to 11 A further embodiment in which the instantaneous water heater 30 is likewise designed as a plug-in module is shown in FIGS. 8 to 11.
  • the exploded view shown in FIG. 8 reveals that the instantaneous water heater 30 has a cylindrical inner body 32 and a two-part outer casing with an upper half-shell 33a and a lower half-shell 33b.
  • the inner body has a helical rib or groove 32 'on its lateral surface, which forms the flow path for the liquid to be heated.
  • An elastic sleeve 34 made of silicone is pulled over the inner body 32 before the two-part outer sheath is folded over and closed.
  • the silicone sleeve 34 serves to seal the flow path formed by the helical groove 32 'against the inner surface of the outer shell.
  • On the collar 34 and edge-side sealing lips are formed, which provide a fluid-tight seal on the end faces of the water heater 30.
  • the silicone sleeve connecting openings for the terminals 38a, 38b are formed, which are also provided with corresponding, molded sealing lips.
  • the inner body has an axial bore or recess into which a heater 36 in the form of a spiral wound around a ceramic body is inserted.
  • An end cap 35 conceals and protects the electrical connections against accidental contact.
  • the ports 38a, 38b are mounted in the form of pluggable quick-release couplings, which are connected to the supply and discharge lines for the liquid to be heated.
  • a closure system for the two half shells 33a, 33b of the outer shell is a two-piece bracket 37a, 37b, which simultaneously forms a handle 39.
  • the two brackets 37a, 37b are hooked to an undercut edge strip on the lower half shell 33b, pivoted about the upper half shell 33a and snapped onto a corresponding edge strip on the upper half shell 33a.
  • To secure the two clamp parts 37a, 37b are screwed together in the grip area 39.
  • the water heater 30 can then be plugged with its quick-release system 38a, 38b on corresponding counter-fittings.
  • the cylindrical inner body 30 can be produced from food grade stainless steel.
  • a non-stick coating for example made of PTFE, is applied in the region of the helical groove 32 '.
  • the shell of the inner body 32 can also be made of aluminum, while the inner region of the inner body can be made of a ceramic material.
  • the two-part outer shell 33a, 33b is preferably made of injection-molded plastic parts.

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

Abstract

L'invention concerne un chauffe-eau instantané destiné à chauffer un liquide en écoulement. Le chauffe-eau comprend un corps intérieur qui s'étend de manière symétrique le long d'un axe longitudinal et qui présente un dispositif de chauffage, et une enveloppe extérieure entourant le corps intérieur. Un canal d'écoulement pour le liquide en écoulement, faisant le tour du corps intérieur de manière hélicoïdale et délimité par l'enveloppe extérieure, est formé entre le corps intérieur et l'enveloppe extérieure. Le chauffe-eau instantané est caractérisé en ce que l'enveloppe extérieure est composée d'au moins deux coques segmentées pouvant être divisées en direction de l'axe longitudinal.
PCT/EP2017/083339 2017-01-05 2017-12-18 Chauffe-eau instantané Ceased WO2018127396A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017100154.9A DE102017100154A1 (de) 2017-01-05 2017-01-05 Durchlauferhitzer
DE102017100154.9 2017-01-05

Publications (2)

Publication Number Publication Date
WO2018127396A2 true WO2018127396A2 (fr) 2018-07-12
WO2018127396A3 WO2018127396A3 (fr) 2018-08-30

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PCT/EP2017/083339 Ceased WO2018127396A2 (fr) 2017-01-05 2017-12-18 Chauffe-eau instantané

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WO (1) WO2018127396A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025223518A1 (fr) * 2024-04-26 2025-10-30 Bleckmann Gmbh & Co. Kg Dispositif de chauffage à écoulement dynamique hélicoïdal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017123642A1 (de) 2017-10-11 2019-04-11 Franke Kaffeemaschinen Ag Vorrichtung zum erzeugen von milchschaum

Citations (2)

* Cited by examiner, † Cited by third party
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WO2013189869A1 (fr) 2012-06-19 2013-12-27 C3 Casting Competence Center Gmbh Chauffe-eau instantané
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