EP2851165B1 - Electric razor with integrated cooling - Google Patents

Electric razor with integrated cooling Download PDF

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Publication number
EP2851165B1
EP2851165B1 EP14189665.4A EP14189665A EP2851165B1 EP 2851165 B1 EP2851165 B1 EP 2851165B1 EP 14189665 A EP14189665 A EP 14189665A EP 2851165 B1 EP2851165 B1 EP 2851165B1
Authority
EP
European Patent Office
Prior art keywords
shaver
cooling element
shaving
passive cooling
designed
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.)
Active
Application number
EP14189665.4A
Other languages
German (de)
French (fr)
Other versions
EP2851165A1 (en
Inventor
Stefan FÜRST
Martin FÜLLGRABE
Oliver Von Sartori-Montecroce
Jan Langsdorf
Uwe Schaaf
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.)
Braun GmbH
Original Assignee
Braun GmbH
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Publication date
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Publication of EP2851165A1 publication Critical patent/EP2851165A1/en
Application granted granted Critical
Publication of EP2851165B1 publication Critical patent/EP2851165B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/48Accessory implements for carrying out a function other than cutting hair, e.g. attachable appliances for manicuring
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45DHAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D27/00Shaving accessories
    • A45D27/46Devices specially adapted for cleaning or disinfecting shavers or razors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3806Accessories
    • B26B19/382Built-in accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3873Electric features; Charging; Computing devices

Definitions

  • the present invention relates to an electrically driven razor with a razor housing and a shaving head arranged thereon, on which at least one shearing or cutting part drivable by an electric motor arranged in the shaver housing is movably mounted.
  • Electric razors are well known in the art as such. These typically have a shearing or cutting head on which translating, oscillating or rotatably mounted cutting devices are attached.
  • Typical cutting devices have a perforated or perforated upper blade and a lower blade, upper and lower blades are movable relative to each other by means of the electric drive, so that when hair enters the holes of the upper blade they can be cut by the cutter.
  • the cooling by means of a cool air flow is also perceived by the user as unpleasant and disturbing.
  • the cooling of a skin knife which comes into contact position with the skin to be shaved, such as a shearing foil, is problematic in practical terms since the perforated foil is not particularly well suited for heat conduction, in particular because of its holey configuration.
  • a trained as a shear foil upper blade is in the operation of the shaver anyway subject to heating. If one wanted to achieve a cooling effect perceptible on the skin by means of a shearing foil, the already existing heating of the shaving foil would have to be counteracted by means of an active cooling and an additional cooling function would be made available so that the user could experience a cooling effect at all.
  • the use of a cutting element which heats up during operation of the razor as a cooling element for skin areas is disadvantageous to that extent.
  • thermocouples should contact the skin during shaving with their so-called cold spots without the interposition of another (passive) cooling element and thereby cool.
  • Peltier elements are each electrically isolated from each other circumferentially around the shearing system around. They must each be electrically connected to the voltage source and moreover each individual Peltier element must also be electrically insulated from the skin, for example by a corresponding lacquer, in order to prevent short-circuiting of the Peltier elements via the skin. As a result, of course, the heat transfer is deteriorated. In addition, such a structure is extremely complicated and expensive.
  • a charging station and a razor is known in which the charging station has a receptacle for the razor and charging means with four electrical coupling means for charging a razor battery.
  • the present invention is based on the object to provide an improved and effective cooling concept for an electrically driven razor.
  • the coolant to be provided on the razor should work as energy-efficiently as possible and be able to be integrated into existing razor geometries and inexpensively be feasible ..
  • the electric razor according to the invention has a razor housing and a shear or cutting head arranged on the razor housing. At least one movably mounted shear or cutting part is arranged on this, which is oscillatingly or rotatably drivable by an electric motor located in the shaver housing. Furthermore, the shaver has an electrically operable active thermocouple, which in operation has a relation to the ambient temperature cooled and a respect to the ambient temperature heatable side.
  • a passive cooling element is thermally coupled, which comes to rest with at least one free end portion on or in the region of the shaving or cutting head of the razor so that it comes into shaving with the skin of a user to the plant. It is essential here that the cooling element is designed exclusively for heat or temperature transfer and not as a functional part of the razor or of the shearing or cutting part.
  • the passive cooling element is to be formed separately and independently of such functional parts of the razor, which are provided for shortening hair and designed for this purpose.
  • the passive cooling element is designed with regard to its construction and its external shape to a fast and efficient heat transfer. It has at least external dimensions which correspond approximately to the dimensions of the upper and lower blades; but with the difference that the passive cooling element is designed as a solid solid.
  • the passive cooling element can be compared to the prior art optimized and improved heat transfer between the actively coolable thermocouple and the skin area to be cooled Make available. Thermal conduction losses between the active thermocouple and the area of the skin to be cooled can be minimized in this way, as compared to a cooling mechanism which cools approximately the shaving foil of a razor (as in the known DE 101 47 286 A1 ), when using comparable energies, a significantly improved cooling result on the skin can be achieved.
  • the passive cooling element as the connection between the active thermocouple and the skin is the use of standard thermocouples, especially commercially available electrothermal transducer possible and there are no special to be manufactured thermocouples are used.
  • the passive cooling element with its, the active thermocouple end facing away from the shear and / or the shaving head at least partially laterally includes or encloses.
  • this exposed and coolable end section of the passive cooling element to be set back relative to the cutting devices arranged on the shearing or cutting part.
  • the at least slightly recessed arrangement of the cooling element relative to the cutting or cutting part arranged on the cutting device can ensure sufficient contact and pressure between the cutting device and the skin area to be shaved.
  • the distance between the passive cooling element and the at least one cutting part is preferably selected such that a skin area to be shaved can enter into contact with the cutting device as well as with the passive cooling element during a shaving operation.
  • shearing or cutting part does not come to rest exactly parallel to the surface normal of the skin area to be shaved on the skin, but if the razor and its shearing or cutting part at least slightly oblique to the surface normal of the skin area along this led which is predominantly the case in a typical shaving operation in practice.
  • the at least slightly recessed relative to the cutting device cooling element with the corresponding skin area for cooling the same can easily come to rest.
  • the cooling element with its free, the user's skin during operation of the razor end portion facing the shear or cutting part, or the entire shaving head completely or at least partially on or includes. It can be provided in particular that the cooling element is formed in this area as a kind of cooling web or cooling strand.
  • the passive cooling element has a rounded projection in the region of the shaving head at least at its free end portion or is designed overall as a rounded cooling web or cooling strand.
  • the passive cooling element may extend in this area, in particular parallel to the longitudinal extension of the at least one cutting part, or of the at least one upper blade.
  • the passive cooling element is formed at least in sections as a mechanical receptacle for at least one spring element, which provides a resilient suspension of the cutting device or parts thereof on the shaving head or on the shearing or cutting part available.
  • the cooling element it is conceivable to integrate the cooling element in a housing portion of the shear or cutting part. It is also possible and within the scope of the invention that via the resilient suspension heat transfer to the shear or cutting part can be done.
  • the predominant cooling effect is provided by the direct abutment position between the free end portions of the passive cooling element with the skin area to be shaved.
  • the passive cooling element may be either rigidly connected to the shaver housing or with the shaving head.
  • the passive cooling element may have at least one outwardly directed projection which comes to rest between a cutting part provided with a shearing foil as the upper blade and a middle cutter of the shaving head. It can be provided in particular that the cooling element is fork-shaped and has two substantially mutually parallel projections which are each between a Side of the central cutter and a left and right arranged therefrom shear or cutting part.
  • the cooling element is arranged exclusively between at least two, viewed in cross-section, outer shear or cutting parts and possibly laterally encloses a central cutter.
  • the active thermocouple is designed as a Peltier element and is electrically connected to a separate, decoupled from the electric motor of the razor power source.
  • both the power source for the motor and the power source for the cooling in the form of accumulators form which do not affect each other.
  • the thermocouple when implementing the thermocouple as a Peltier element, it should be noted that its power consumption can be significantly higher than the current consumption of the electric motor.
  • the active thermocouple is thermally coupled with a relative to the ambient temperature heating side with a heat sink.
  • the heat sink heats up during operation of the thermocouple, while the passive heat sink, which is arranged on the other side of the thermocouple, undergoes cooling. It is provided in particular, to arrange the active thermocouple as well as the heat sink in the region of the base housing of the razor, while the passive cooling element, a cooling path between the active thermocouple and thermally overcomes the formed on the shaving head cooling bar, cooling bar or a cooling flange.
  • the arrangement of the heat sink on the outside of the shaver housing has the advantage that the heat supplied to the heat sink during operation of the thermocouple can be relatively easily, quickly and efficiently delivered to the environment.
  • the heat sink in the middle of the razor housing or even embed functional parts of the razor for reasons of space in the heat sink.
  • the razor with cooling air supply means with which the heat sink, which heats up during operation, can be actively cooled.
  • the heat sink which heats up during operation
  • the heat sink has a latent heat storage.
  • the latent heat storage is provided with a so-called phase transition material, which exploits the enthalpy reversible thermodynamic state changes of the material, or the latent heat storage medium.
  • the latent heat storage medium for example, perform a phase transition between solid and liquid.
  • a suitable latent heat storage material are in particular paraffins or special salts, possibly even water into consideration.
  • the housing of the latent heat accumulator may be at least partially transparent, and to be illuminated from the interior of the shaver housing.
  • the optical transmission behavior of the heat storage material may change, so that the user can also be provided an optical control option with regard to the state of the latent heat storage.
  • the heat sink is designed to receive a liquid which evaporates due to the heat action achievable by the active thermocouple. So it could be provided to design the heat sink as a liquid or water evaporator by this has a good thermal conductivity and porous material which is soaked before shaving with about cold water. During operation of the thermocouple, this heat sink would experience heating, but heat can be withdrawn from the overall system due to the onset of evaporation of the water and the drying of this heat sink.
  • thermocouple is adjustable adjustable by the user, and that the thermocouple is designed either for cooling and for heating the passive cooling element and correspondingly opposite to the heat sink.
  • a reversal of the direction of the cooling effect can be particularly advantageous for actively cooling the heat sink, for example before the razor is put into operation, so that it is not heated to an excessively high temperature during operation.
  • a heating of the thermally coupled with the shaving head passive cooling element can be achieved.
  • Such heating is advantageous in connection with a cleaning procedure of the immediately adjacent shear and cutting parts, which are soaked, for example with the aid of a cleaning station with an aqueous or alcoholic cleaning fluid and better dried after cleaning under the action of the heat provided by the passive cooling element can be.
  • the invention relates to a charging station for an electrically driven razor, wherein the charging station has a receptacle for a razor housing and is equipped with charging means for charging at least one arranged in the razor housing electrical accumulator.
  • the electrical coupling means such as in the form of spring-movable contact pins, not only provide a power supply for the batteries to be charged and located in the shaver housing accumulators, but also for coupling an arranged in the shaver housing active thermocouple of the shaver with a control and control unit of the charging station are formed.
  • a razor parked in the charging station and provided with an active thermocouple, possibly also with a heat sink, can already be cooled to a predetermined temperature level in the charging station before the razor is put into operation.
  • the heat store or heat sink provided on the razor can be cooled.
  • the charging station is designed to dissipate energy from the heat sink, which has been heated up as a result of a shaving operation, and to convert it back into electrical energy.
  • it can be provided, in particular, to return the stored heat from the heat sink via the Peltier element coupled thereto to the charging station and to use it for charging the batteries located in the housing of the razor.
  • the charging station or its control and regulating unit are in particular designed to cool a heat sink thermally coupled to the active thermocouple of the shaver by means of the thermocouple and at the same time a passive, thermally coupled to the thermocouple cooling element, which extends to or into a shaving head of Razor extends into it, to heat for cleaning purposes.
  • a passive, thermally coupled to the thermocouple cooling element which extends to or into a shaving head of Razor extends into it, to heat for cleaning purposes.
  • Such coupled cooling or heating of the heat sink and cooling element can be advantageously integrated into a charging process of the razor or temporally coupled thereto.
  • the in Fig. 1 Razor 1 shown schematically has a housing 2 and a shear or cutting head 3 arranged at the upper end portion of the housing 2.
  • the accumulator 10 drives a motor 9, which is in mechanical operative connection with the shearing or cutting head 3 arranged shear or cutting parts 4, 5.
  • the shearing and cutting parts 4, 5 are spring-loaded by means of compression springs 14 against a designed as a circumferential cooling strip passive cooling element 6.
  • the cooling element 6 has laterally of the electrically operated shear and cutting parts 4, 5 projecting and compared to the free end portions of the shearing parts 4, 5 recessed rounded projections or webs 20, 21, which should reach in shaving operation with the skin surfaces to be shaved in contact position.
  • the passive cooling element 6 is within the razor housing 2 with an active electrically actuated Thermocouple 7, which may be formed as a Peltier element, thermally coupled.
  • thermocouple 7 can be operated by means of a separate accumulator 11 in order to be able to provide a sufficiently long shaving power via the accumulator 10, independently of the cooling function of the shaver, which has a comparatively high energy requirement.
  • thermocouple 7 On the side facing away from the passive cooling element 6, a heat sink 8 is arranged on the thermocouple 7. After execution according to Fig. 1 has this heat sink to the outside facing cooling fins, which can be acted upon by a within the housing and by means of the motor 9 driven fan 13 and an adjoining cooling channel 12 with cooling air.
  • the heat sink 8 and the cooling channel 12 can be designed so that a barely perceptible to the user airflow escapes from the housing 2, so that in the end the shaving comfort is impaired by the air flow to the user only imperceptibly.
  • the passive cooling element 6 may in particular be designed as a cooling strip or cooling flange and surround all shearing or cutting parts 4, 5 of the shearing or cutting head 3 of the shaver 1.
  • the cooling strip, or the passive cooling element 6 may be formed such that it occupies the space between the cutting parts 4, 5 and / or acts as a holder for the cutting parts, in particular for the middle part 5.
  • the upwardly facing extensions 20, 21 of the passive cooling element 6 are in the in Fig. 1 shown basic position of the razor against the upper free end portions the shear and cutting parts 4, 5 reset a bit. Since the shearing and cutting parts 4, 5 are mounted spring-loaded, they can recede slightly at a counter-pressure applied by the skin to be shaved, so that the passive cooling element 6 comes with his web-like extensions 20, 21 with the skin to be shaved in investment position.
  • compression of the spring elements 14 can be limited to a certain extent by the configuration of the cooling webs 20, 21, so that the choice of corresponding spring constants for the compression springs 14 and by the geometric configuration of the cooling strips 20, 21 and the cutting and shearing parts 4, 5 can be provided for shaving optimal contact pressure between the shear and cutting parts 4, 5 and the skin.
  • the incorporation of the Peltier element 7 in the shaver housing, particularly at a lateral edge of the shaver housing, provides effective shock protection for the Peltier element, particularly when the entire shaver slips off a user's hand and falls to the ground. This also favors the sealing of the device against dirt and water or moisture.
  • the embodiment according to Fig. 2 has a latent heat accumulator 18 instead of a cooling body 8 provided with cooling fins.
  • the latent heat storage 18 may be filled, for example with paraffin and at least partially configured to be transparent.
  • the latent heat accumulator 18 or its housing is illuminated from the inside, so that upon liquefaction of the latent heat storage material during operation of the thermocouple 7 a perceptible for the user optical effect arises, the user the current operating state of the Peltier element. 7 and / or the latent heat storage can signal.
  • Peltier element 7 By means of the Peltier element 7 is an individual, to the wishes and concerns of the user individually customizable cooling achievable. In particular, by means of a User adjustable actuator the cooling temperature of the heat sink 6 can be adjusted.
  • Peltier element as an active thermocouple also allows a reverse cooling or heating function. If the Peltier element is operated in an approximately pulsating or reversed manner, a heat store 18, 8 which has been heated up after the shaving operation can also be actively cooled. In addition, it is conceivable that those thermally coupled with the Peltier element 7 elements cooling element 6 and heat sink 8 to cool by itself to room temperature and thereby exploit the Seebeck effect to obtain electrical energy.
  • the razor 1 in particular after use, is stored in a charging station, which may possibly be coupled to a cleaning device.
  • the electrical energy which can be generated by the Peltier element 7 can be transferred to the charging station and used there for charging the batteries 10, 11 of the razor 1.
  • the charging station cools the heat sink 8, 18 to a predetermined temperature by means of a dedicated control and regulating device before the razor is put into operation, so that a correspondingly large cooling capacity can be provided during operation of the razor.
  • the charging station is equally provided with a cleaning device in which the shearing and cutting parts 4, 5 of the razor are immersed in a cleaning liquid
  • the cooling element 6, 16 as a heating element to the cleaning liquid , which surrounds the shear and cutting parts 4, 5, to heat, so that overall better cleaning performance can be achieved.
  • FIG. 3 an alternative embodiment of a passive cooling element 16 is shown, which comprises with its free upwardly projecting, fork-shaped end portion a central cutter 5 of the shaving head.
  • a passive cooling element 16 instead of a circulating cooling line, as in the FIGS. 1 and 2 shown, the cooling element between the center cutter and the outside to come shear or cutting parts 4 is arranged.
  • the central cutter 5 are spring loaded on the shaving head and slidably mounted relative to the cooling element, so that when shaving the shear or Cutting parts 4 at least slightly by a back-apply from the skin of the user back pressure, whereby a direct contact of the cooling element 16 and skin can be achieved.
  • Fig. 4 drives the electric motor 9, the output shaft has an eccentric 25, via swing bridges 26 in a conventional manner, the movable shear elements of the cutting part 4 and the cutting part 5 at.
  • the shaving head 3 facing front side of the housing 2 is designed as a heat sink 8, which is sealingly connected to the heat sink 18 formed as a heat sink or upper housing portion.
  • the two components 8 and 18 are preferably made of aluminum and form the device chassis. This is on the one hand particularly stable, but can also record a significantly large amount of waste heat of the thermocouple 7, which is designed in particular as a Peltier element, and then deliver it to the environment.
  • thermocouple 7 In the area between the two shearing parts 4 at least one thermocouple 7 or several thermocouples in succession on the heat sink 8 and that with the warm side 27 attached.
  • a beam-shaped passive cooling element or cooling strip 6 is arranged, which extends between the two parts of the shears 4 upwards. The vertical extent is chosen such that the upper end portion 29 can contact the skin to be shaved during shaving.
  • the cooling bar 6 at the same time provides a mechanical protection bar for when the razor falls down once.
  • the cutting part 5 is arranged within a groove of the cooling strip 6.
  • the shearing parts 4 and / or the cutting part 5 and / or the cooling strip 6 may be resiliently connected to the housing 2 in order to ensure optimum adaptation to the contour of the skin to be shaved.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Description

Die vorliegende Erfindung betrifft einen elektrisch angetriebenen Rasierer mit einem Rasierergehäuse und einem daran angeordneten Scherkopf, an welchem zumindest ein von einem im Rasierergehäuse angeordneten Elektromotor antreibbares Scher- oder Schneidteil beweglich gelagert ist.The present invention relates to an electrically driven razor with a razor housing and a shaving head arranged thereon, on which at least one shearing or cutting part drivable by an electric motor arranged in the shaver housing is movably mounted.

Elektrisch betriebene Rasierer sind im Stand der Technik als solche hinlänglich bekannt. Diese weisen typischerweise einen Scher- oder Schneidkopf auf, an dem translatorisch, oszillierend oder drehbeweglich gelagerte Schneidvorrichtungen befestigt sind. Typische Schneidvorrichtungen weisen ein perforiertes oder mit Löchern versehenes Obermesser und ein Untermesser auf, wobei Ober- und Untermesser mittels des elektrischen Antriebs relativ zueinander bewegbar sind, sodass bei Eintritt von Haaren in die Löcher des Obermessers diese von der Schneidvorrichtung abgeschnitten werden können.Electric razors are well known in the art as such. These typically have a shearing or cutting head on which translating, oscillating or rotatably mounted cutting devices are attached. Typical cutting devices have a perforated or perforated upper blade and a lower blade, upper and lower blades are movable relative to each other by means of the electric drive, so that when hair enters the holes of the upper blade they can be cut by the cutter.

Ein Großteil der Anwender von solchen elektrisch betriebenen Rasierern registriert während des Rasierprozesses ein Wärmegefühl auf der zu rasierenden Haut. Dies wird vom Anwender oft als unangenehm empfunden und von diesem mit Hautreizungen in Verbindung gebracht. Die spürbare Wärme entsteht insbesondere durch mechanische Reibung von Ober- und Untermesser.A majority of users of such electric razors registered during the shaving a feeling of warmth on the skin to be shaved. This is often perceived as unpleasant by the user and is associated with skin irritation. The noticeable heat is generated in particular by mechanical friction of the upper and lower blades.

So sind im Stand der Technik bereits unterschiedliche Kühlmittel für elektrisch betriebene Rasierer beschrieben. Die US 3,364,568 beschreibt beispielsweise die Verwendung eines elektrisch betätigbaren Kühlelements, welches über Kontaktplatten mit der außenliegenden Scherfolie bzw. mit dem Obermesser des Scher- oder Schneidkopfs thermisch gekoppelt ist. Auf diese Art und Weise können solche Teile des Rasierers, welcher bei der Rasur mit der Haut des Benutzers in Kontakt gelangen, aktiv gekühlt werden.For example, different coolants for electrically operated razors have already been described in the prior art. The US 3,364,568 describes, for example, the use of an electrically operable cooling element, which is thermally coupled via contact plates with the outer shaving foil or with the upper blade of the shearing or cutting head. In this way, those parts of the razor which come into contact with the skin of the user during shaving can be actively cooled.

Ein ähnlicher Ansatz ist in der DE 101 47 286 A1 beschrieben. Dort ist weiterhin vorgesehen, mittels eines Gebläses kalte Luft aus einem elektrischen Kühlelement auf die zu rasierende Hautpartie zu blasen.A similar approach is in the DE 101 47 286 A1 described. There is also provided to blow by means of a blower cold air from an electric cooling element on the skin area to be shaved.

Die Kühlung mittels eines kühlen Luftstroms wird hingegen vom Benutzer ebenfalls als unangenehm und störend empfunden. Die Kühlung eines mit der zu rasierenden Haut in Kontaktstellung gelangenden Obermessers, etwa einer Scherfolie gestaltet sich in praktischer Hinsicht als problematisch, da die perforierte Folie insbesondere aufgrund ihrer löchrigen Ausgestaltung nicht sonderlich gut zur Wärmeleitung geeignet ist.The cooling by means of a cool air flow, however, is also perceived by the user as unpleasant and disturbing. The cooling of a skin knife which comes into contact position with the skin to be shaved, such as a shearing foil, is problematic in practical terms since the perforated foil is not particularly well suited for heat conduction, in particular because of its holey configuration.

Außerdem ist zu beachten, dass ein als Scherfolie ausgebildetes Obermesser im Betrieb des Rasierers ohnehin einer Erwärmung unterliegt. Wollte man also mittels einer Scherfolie einen auf der Haut spürbaren Kühleffekt erreichen, so müsste mittels einer aktiven Kühlung zunächst der ohnehin vorhandenen Erwärmung der Scherfolie entgegengewirkt und eine darüber hinausgehende Kühlfunktion zur Verfügung gestellt werden, damit der Anwender überhaupt einen Kühleffekt erfahren kann. Die Verwendung eines im Betrieb des Rasierers sich erwärmenden Schneidelements als Kühlelement für Hautpartien gestaltet sich insoweit als nachteilig.It should also be noted that a trained as a shear foil upper blade is in the operation of the shaver anyway subject to heating. If one wanted to achieve a cooling effect perceptible on the skin by means of a shearing foil, the already existing heating of the shaving foil would have to be counteracted by means of an active cooling and an additional cooling function would be made available so that the user could experience a cooling effect at all. The use of a cutting element which heats up during operation of the razor as a cooling element for skin areas is disadvantageous to that extent.

Aus der CH 390722 A ist eine eine Vielzahl von Peltier-Elementen enthaltende Kühleinrichtung für einen Rasierer bekannt. Diese Thermoelemente sollen während der Rasur mit ihren sogenannten kalten Stellen die Haut ohne Zwischenschaltung eines weiteren(passiven) Kühlelementes kontaktierten und dabei kühlen. Diese Peltier-Elemente sind jeweils elektrisch von einander isoliert umlaufend um das Schersystem herum angeordnet. Sie müssen jeweils elektrisch mit der Spannungsquelle verbunden werden und darüber hinaus muss jedes einzelne Peltier-Element auch gegenüber der Haut - beispielsweise durch einen entsprechenden Lack - elektrisch isoliert sein um ein Kurzschließen der Peltier-Elemente über die Haut zu verhindern. Dadurch wird natürlich auch die Wärmeübertragung verschlechtert. Darüber hinaus ist ein solcher Aufbau extrem aufwendig und kostspielig.From the CH 390722 A For example, there is known a shaver cooling device containing a plurality of Peltier elements. These thermocouples should contact the skin during shaving with their so-called cold spots without the interposition of another (passive) cooling element and thereby cool. These Peltier elements are each electrically isolated from each other circumferentially around the shearing system around. They must each be electrically connected to the voltage source and moreover each individual Peltier element must also be electrically insulated from the skin, for example by a corresponding lacquer, in order to prevent short-circuiting of the Peltier elements via the skin. As a result, of course, the heat transfer is deteriorated. In addition, such a structure is extremely complicated and expensive.

Aus der US 6 112 414 A ist eine Ladestation und ein Rasierer bekannt, bei der die Ladestation eine Aufnahme für den Rasierer und Lademittel mit vier elektrischen Kopplungsmitteln zum Laden einer Rasiererbatterie aufweist.From the US 6,112,414 A a charging station and a razor is known in which the charging station has a receptacle for the razor and charging means with four electrical coupling means for charging a razor battery.

Der vorliegenden Erfindung liegt demgegenüber die Aufgabe zugrunde, ein verbessertes und effektives Kühlkonzept für einen elektrisch angetriebenen Rasierer zur Verfügung zu stellen. Die am Rasierer vorzusehenden Kühlmittel sollen dabei möglichst energieeffizient arbeiten und in bestehende Rasierergeometrien integrierbar sowie kostengünstig realisierbar sein..The present invention is based on the object to provide an improved and effective cooling concept for an electrically driven razor. The coolant to be provided on the razor should work as energy-efficiently as possible and be able to be integrated into existing razor geometries and inexpensively be feasible ..

Die der Erfindung zugrundeliegende Aufgabe wird mittels eines elektrisch angetriebenen Rasierers gemäß Patentanspruch 1 und einer zugehörigen Ladestation gemäß Patentanspruch 14 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den jeweiligen Unteransprüchen angegeben.The object underlying the invention is achieved by means of an electrically driven razor according to claim 1 and an associated charging station according to claim 14. Advantageous embodiments of the invention are specified in the respective subclaims.

Der erfindungsgemäße elektrisch angetriebene Rasierer weist ein Rasierergehäuse und einen am Rasierergehäuse angeordneten Scher- oder Schneidkopf auf. An diesem ist zumindest ein beweglich gelagertes Scher- oder Schneidteil angeordnet, welches von einem im Rasierergehäuse befindlichen Elektromotor oszillierend oder drehbar antreibbar ist. Ferner weist der Rasierer ein elektrisch betätigbares aktives Thermoelement auf, welches im Betrieb eine gegenüber der Umgebungstemperatur abkühlbare und eine gegenüber der Umgebungstemperatur aufheizbare Seite aufweist.The electric razor according to the invention has a razor housing and a shear or cutting head arranged on the razor housing. At least one movably mounted shear or cutting part is arranged on this, which is oscillatingly or rotatably drivable by an electric motor located in the shaver housing. Furthermore, the shaver has an electrically operable active thermocouple, which in operation has a relation to the ambient temperature cooled and a respect to the ambient temperature heatable side.

Mit der aktiv abkühlbaren Seite des Thermoelements ist ein passives Kühlelement thermisch gekoppelt, welches mit zumindest einem freien Endabschnitt derart am oder im Bereich des Scher- oder Schneidkopfs des Rasierers zu liegen kommt, sodass es im Rasierbetrieb mit der Haut eines Anwenders zur Anlage gelangt. Wesentlich hierbei ist es, dass das Kühlelement ausschließlich zur Wärme- bzw. Temperaturübertragung und nicht als Funktionsteil des Rasierers oder des Scher- oder Schneidteils ausgebildet ist.With the actively coolable side of the thermocouple, a passive cooling element is thermally coupled, which comes to rest with at least one free end portion on or in the region of the shaving or cutting head of the razor so that it comes into shaving with the skin of a user to the plant. It is essential here that the cooling element is designed exclusively for heat or temperature transfer and not as a functional part of the razor or of the shearing or cutting part.

Dabei ist vorgesehen, dass das passive Kühlelement separat und unabhängig von solchen Funktionsteilen des Rasierers auszubilden ist, welche zum Kürzen von Haaren vorgesehen und hierzu ausgebildet sind. Das passive Kühlelement ist hinsichtlich seines Aufbaus und seiner äußeren Formgebung auf eine möglichst schnelle und effiziente Wärmeübertragung ausgelegt. Es weist zumindest äußere Abmessungen auf, die in etwa den Abmessungen von Ober- und Untermesser entsprechen; dies aber mit dem Unterschied, dass das passive Kühlelement als massiver Festkörper ausgebildet ist.It is provided that the passive cooling element is to be formed separately and independently of such functional parts of the razor, which are provided for shortening hair and designed for this purpose. The passive cooling element is designed with regard to its construction and its external shape to a fast and efficient heat transfer. It has at least external dimensions which correspond approximately to the dimensions of the upper and lower blades; but with the difference that the passive cooling element is designed as a solid solid.

Insbesondere durch seine massive Ausgestaltung kann das passive Kühlelement eine gegenüber dem Stand der Technik optimierte und verbesserte Wärmeübertragung zwischen dem aktiv kühlbaren Thermoelement und der zu kühlenden Hautpartie zur Verfügung stellen. Wärmeleitungsverluste zwischen dem aktiven Thermoelement und der zu kühlenden Hautpartie können auf diese Art und Weise minimiert werden, sodass im Vergleich zu einem Kühlmechanismus, welcher etwa die Scherfolie eines Rasierers kühlt (wie bei der bekannten DE 101 47 286 A1 ), bei Aufwendung vergleichbarer Energien ein deutlich verbessertes Kühlergebnis auf der Haut erzielt werden kann. Durch den Einsatz des passiven Kühlelementes als Verbindung zwischen dem aktiven Thermoelement und der Haut ist die Verwendung von Standard-Thermoelementen, insbesondere handelsüblicher elektrothermischer Wandler möglich und es müssen keine speziell zu fertigende Thermoelemente eingesetzt werden.In particular, by its massive design, the passive cooling element can be compared to the prior art optimized and improved heat transfer between the actively coolable thermocouple and the skin area to be cooled Make available. Thermal conduction losses between the active thermocouple and the area of the skin to be cooled can be minimized in this way, as compared to a cooling mechanism which cools approximately the shaving foil of a razor (as in the known DE 101 47 286 A1 ), when using comparable energies, a significantly improved cooling result on the skin can be achieved. By using the passive cooling element as the connection between the active thermocouple and the skin is the use of standard thermocouples, especially commercially available electrothermal transducer possible and there are no special to be manufactured thermocouples are used.

Nach einer ersten vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass das passive Kühlelement mit seinem, dem aktiven Thermoelement abgewandten Endabschnitt das Scherteil und/oder den Scherkopf zumindest abschnittsweise seitlich umfasst oder einfasst. Dabei ist insbesondere vorgesehen, dass dieser freiliegende und kühlbare Endabschnitt des passiven Kühlelements gegenüber den am Scher- oder Schneidteil angeordneten Schneidvorrichtungen zurückgesetzt zu liegen kommt.According to a first advantageous embodiment of the invention, it is provided that the passive cooling element with its, the active thermocouple end facing away from the shear and / or the shaving head at least partially laterally includes or encloses. In this case, provision is made in particular for this exposed and coolable end section of the passive cooling element to be set back relative to the cutting devices arranged on the shearing or cutting part.

Daraus ergibt sich, dass das freie Ende des passiven Kühlelements beim Entlanggleiten an einer zu rasierenden Hautpartie einem mit Ober- und Untermesser bestückten Schneidteil vorauseilend und/oder nacheilend angeordnet ist.It follows that the free end of the passive cooling element when sliding along a skin area to be shaved is preceded and / or lagged by a cutting part equipped with upper and lower blades.

Die zumindest geringfügig zurückgesetzte Anordnung des Kühlelements gegenüber der am Scher- oder Schneidteil angeordneten Schneidvorrichtung kann eine ausreichende Anlage- und Andruckkraft zwischen der Schneidvorrichtung und der zu rasierenden Hautpartie gewährleisten. Der Abstand zwischen dem passiven Kühlelement und dem zumindest einen Schneidteil ist dabei vorzugsweise so gewählt, dass eine zu rasierende Hautpartie sowohl mit der Schneidvorrichtung als auch mit dem passiven Kühlelement bei einem Rasiervorgang in Anlagestellung treten kann.The at least slightly recessed arrangement of the cooling element relative to the cutting or cutting part arranged on the cutting device can ensure sufficient contact and pressure between the cutting device and the skin area to be shaved. The distance between the passive cooling element and the at least one cutting part is preferably selected such that a skin area to be shaved can enter into contact with the cutting device as well as with the passive cooling element during a shaving operation.

Dabei ist es insbesondere von Vorteil, wenn das Scher- oder Schneidteil nicht exakt parallel zur Flächennormalen der zu rasierenden Hautpartie an der Haut zur Anlage gelangt, sondern wenn der Rasierer und sein Scher- oder Schneidteil zumindest etwas schräg zur Flächennormalen der Hautpartie an dieser entlang geführt werden, was bei einem typischen Rasiervorgang in Praxis überwiegend der Fall ist.It is particularly advantageous if the shearing or cutting part does not come to rest exactly parallel to the surface normal of the skin area to be shaved on the skin, but if the razor and its shearing or cutting part at least slightly oblique to the surface normal of the skin area along this led which is predominantly the case in a typical shaving operation in practice.

Insbesondere bei einer solch zumindest leicht geneigten oder schrägen Ausrichtung des Scher- oder Schneidteils, bzw. des gesamten Rasierergehäuses gegenüber der Flächennormalen der Haut, kann das zumindest geringfügig gegenüber der Schneidvorrichtung zurückversetzte Kühlelement mit der entsprechenden Hautpartie zur Kühlung derselben problemlos zur Anlage gelangen.In particular, in such an at least slightly inclined or oblique orientation of the shearing or cutting part, or the entire shaver housing relative to the surface normal of the skin, the at least slightly recessed relative to the cutting device cooling element with the corresponding skin area for cooling the same can easily come to rest.

Dabei ist insbesondere vorgesehen, dass das Kühlelement mit seinem freien, der Haut des Benutzers im Betrieb des Rasierers zugewandten Endabschnitt das Scher- oder Schneidteil, bzw. den gesamten Scherkopf vollständig oder zumindest teilweise ein- oder umfasst. Dabei kann insbesondere vorgesehen sein, dass das Kühlelement in diesem Bereich als eine Art kühlender Steg oder Kühlstrang ausgebildet ist.It is provided in particular that the cooling element with its free, the user's skin during operation of the razor end portion facing the shear or cutting part, or the entire shaving head completely or at least partially on or includes. It can be provided in particular that the cooling element is formed in this area as a kind of cooling web or cooling strand.

Nach einer vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass das passive Kühlelement im Bereich des Scherkopfs zumindest an seinem freien Endabschnitt einen abgerundeten Vorsprung aufweist oder insgesamt als abgerundeter Kühlsteg oder Kühlstrang ausgebildet ist. Das passive Kühlelement kann sich in diesem Bereich insbesondere parallel zur Längserstreckung der zumindest einen Schneidteils, bzw. des zumindest einen Obermessers erstrecken.According to an advantageous embodiment of the invention, it is provided that the passive cooling element has a rounded projection in the region of the shaving head at least at its free end portion or is designed overall as a rounded cooling web or cooling strand. The passive cooling element may extend in this area, in particular parallel to the longitudinal extension of the at least one cutting part, or of the at least one upper blade.

Des Weiteren kann vorgesehen sein, dass das passive Kühlelement zumindest abschnittsweise als mechanische Aufnahme für zumindest ein Federelement ausgebildet ist, welches eine federnde Aufhängung der Schneidvorrichtung oder Teilen hiervon am Scherkopf bzw. am Scher- oder Schneidteil zur Verfügung stellt. Insoweit ist denkbar, das Kühlelement in einen Gehäuseabschnitt des Scher- oder Schneidteils zu integrieren. Auch ist es möglich und im Rahmen der Erfindung, dass über die federnde Aufhängung eine Wärmeübertragung auf das Scher- oder Schneidteil erfolgen kann.Furthermore, it can be provided that the passive cooling element is formed at least in sections as a mechanical receptacle for at least one spring element, which provides a resilient suspension of the cutting device or parts thereof on the shaving head or on the shearing or cutting part available. In that regard, it is conceivable to integrate the cooling element in a housing portion of the shear or cutting part. It is also possible and within the scope of the invention that via the resilient suspension heat transfer to the shear or cutting part can be done.

Der überwiegende Kühleffekt wird jedoch über die direkte Anlagestellung zwischen den freien Endabschnitten des passiven Kühlelements mit der zu rasierenden Hautpartie zur Verfügung gestellt.However, the predominant cooling effect is provided by the direct abutment position between the free end portions of the passive cooling element with the skin area to be shaved.

Ferner ist es im Rahmen der Erfindung, den gesamten Scherkopf federbelastet gegenüber dem Rasierergehäuse zu lagern, wobei dann das passive Kühlelement entweder starr mit dem Rasierergehäuse oder mit dem Scherkopf verbunden sein kann.Furthermore, it is within the scope of the invention to support the entire shaving head spring loaded relative to the shaver housing, in which case the passive cooling element may be either rigidly connected to the shaver housing or with the shaving head.

Nach einer weiteren ergänzenden oder alternativen Ausgestaltung kann das passive Kühlelement zumindest einen nach außen gerichteten Vorsprung aufweisen, welcher zwischen einem mit einer Scherfolie als Obermesser versehenen Schneidteil und einem Mittelschneider des Scherkopfes zu liegen kommt. Dabei kann insbesondere vorgesehen sein, dass das Kühlelement gabelartig ausgebildet ist und zwei im Wesentlichen parallel zueinander verlaufende Vorsprünge aufweist, welche sich jeweils zwischen einer Seite des Mittelschneiders und einem links und rechts davon angeordneten Scher- oder Schneidteil befinden.According to a further additional or alternative embodiment, the passive cooling element may have at least one outwardly directed projection which comes to rest between a cutting part provided with a shearing foil as the upper blade and a middle cutter of the shaving head. It can be provided in particular that the cooling element is fork-shaped and has two substantially mutually parallel projections which are each between a Side of the central cutter and a left and right arranged therefrom shear or cutting part.

Bei dieser Ausgestaltung ist insbesondere vorgesehen, dass das Kühlelement ausschließlich zwischen zumindest zwei, im Querschnitt betrachtet, außenliegenden Scher- oder Schneidteilen angeordnet ist und ggf. einen Mittelschneider seitlich einfasst.In this embodiment, it is provided in particular that the cooling element is arranged exclusively between at least two, viewed in cross-section, outer shear or cutting parts and possibly laterally encloses a central cutter.

Im Rahmen der Erfindung ist weiterhin vorgesehen, dass das aktive Thermoelement als Peltier-Element ausgebildet ist und mit einer separaten, vom Elektromotor des Rasierers entkoppelten Stromquelle elektrisch verbunden ist. Dabei ist insbesondere vorgesehen, sowohl die Stromquelle für den Motor als auch die Stromquelle für die Kühlung in Form von Akkumulatoren auszubilden, welche sich gegenseitig nicht beeinflussen. Bei Implementierung des Thermoelements als Peltier-Element ist nämlich zu beachten, dass dessen Stromverbrauch deutlich über dem Stromverbrauch des Elektromotors liegen kann.In the context of the invention it is further provided that the active thermocouple is designed as a Peltier element and is electrically connected to a separate, decoupled from the electric motor of the razor power source. In particular, it is provided that both the power source for the motor and the power source for the cooling in the form of accumulators form, which do not affect each other. In fact, when implementing the thermocouple as a Peltier element, it should be noted that its power consumption can be significantly higher than the current consumption of the electric motor.

Durch das Vorsehen zweier unabhängiger Akkumulatoren wird eine erhöhte Betriebssicherheit zumindest für den Rasierbetrieb geschaffen, während bei übermäßig langem Gebrauch ohne zwischenzeitliches Aufladen von Akkumulatoren auf die Kühlfunktion ggf. verzichtet werden kann. Bei besonders langen Intervallen zwischen zwei Akku-Ladezyklen kann trotz eines nicht zu vernachlässigenden Stromverbrauchs des Peltier-Elements eine langanhaltende Rasierfunktion gewährleistet werden. Die Kühlfunktion geht somit nicht zu Lasten der Rasier-Betriebsdauer des Rasierers.By providing two independent accumulators increased reliability is created at least for the shaving, while may be waived if excessive use without intermediate charging of accumulators on the cooling function if necessary. At particularly long intervals between two battery charging cycles, a long-lasting shaving function can be ensured despite a not negligible power consumption of the Peltier element. The cooling function is thus not at the expense of the shaver operating life of the razor.

Anstelle eines klassischen Peltier-Elements können auch diverse andere, den Seebeck-Effekt ausnutzende Halbleiterelemente entsprechend Verwendung finden.Instead of a classic Peltier element, various other semiconductor elements utilizing the Seebeck effect can also be used accordingly.

Des Weiteren ist vorgesehen, dass das aktive Thermoelement mit einer sich gegenüber der Umgebungstemperatur aufheizenden Seite mit einem Kühlkörper thermisch gekoppelt ist. Der Kühlkörper heizt sich im Betrieb des Thermoelements auf, während der passive Kühlkörper, welcher an der anderen Seite des Thermoelements angeordnet ist, eine Abkühlung erfährt. Es ist dabei insbesondere vorgesehen, das aktive Thermoelement als auch den Kühlkörper im Bereich des Grundgehäuses des Rasierers anzuordnen, während das passive Kühlelement eine Kühlstrecke zwischen dem aktiven Thermoelement und den am Scherkopf ausgebildeten Kühlsteg, Kühlleiste oder einem Kühlflansch thermisch überwindet.Furthermore, it is provided that the active thermocouple is thermally coupled with a relative to the ambient temperature heating side with a heat sink. The heat sink heats up during operation of the thermocouple, while the passive heat sink, which is arranged on the other side of the thermocouple, undergoes cooling. It is provided in particular, to arrange the active thermocouple as well as the heat sink in the region of the base housing of the razor, while the passive cooling element, a cooling path between the active thermocouple and thermally overcomes the formed on the shaving head cooling bar, cooling bar or a cooling flange.

Die Anordnung des Kühlkörpers an der Außenseite des Rasierergehäuses hat den Vorteil, dass die dem Kühlkörper zugeführte Wärme im Betrieb des Thermoelements verhältnismäßig leicht, schnell und effizient an die Umgebung abgegeben werden kann.The arrangement of the heat sink on the outside of the shaver housing has the advantage that the heat supplied to the heat sink during operation of the thermocouple can be relatively easily, quickly and efficiently delivered to the environment.

Alternativ oder ergänzend hierzu kann vorgesehen werden, den Kühlkörper inmitten des Rasierergehäuses anzuordnen oder gar Funktionsteile des Rasierers aus Platzgründen in den Kühlkörper einzubetten.Alternatively or additionally, it can be provided to arrange the heat sink in the middle of the razor housing or even embed functional parts of the razor for reasons of space in the heat sink.

Nach einer weiteren Ausgestaltung der Erfindung ist vorgesehen, am Rasierer Kühlluftzufuhreinrichtung vorzusehen, mit welcher der sich im Betrieb erwärmende Kühlkörper aktiv gekühlt werden kann. Hierzu ist denkbar, einen Ventilator und einen Kühlluftkanal vorzusehen, mittels welchem der Kühlkörper im Betrieb mit Kühlluft beaufschlagt werden kann.According to a further embodiment of the invention, it is provided to provide the razor with cooling air supply means with which the heat sink, which heats up during operation, can be actively cooled. For this purpose, it is conceivable to provide a fan and a cooling air duct, by means of which the cooling body can be acted upon during operation with cooling air.

Nach einer besonders vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Kühlkörper einen Latentwärmespeicher aufweist. Der Latentwärmespeicher ist mit einem sogenannten Phasenübergangsmaterial versehen, welches die Enthalpie reversibler thermodynamischer Zustandsänderungen des Materials, bzw. des Latentwärmespeichermediums ausnutzt. Das Latentwärmespeichermedium kann beispielsweise einen Phasenübergang zwischen fest und flüssig vollziehen. Als geeignetes Latentwärmespeichermaterial kommen insbesondere Paraffine oder spezielle Salze, ggf. sogar Wasser in Betracht.According to a particularly advantageous embodiment of the invention it is provided that the heat sink has a latent heat storage. The latent heat storage is provided with a so-called phase transition material, which exploits the enthalpy reversible thermodynamic state changes of the material, or the latent heat storage medium. The latent heat storage medium, for example, perform a phase transition between solid and liquid. As a suitable latent heat storage material are in particular paraffins or special salts, possibly even water into consideration.

Dabei kann insbesondere vorgesehen werden, das Gehäuse des Latentwärmespeichers zumindest teilweise transparent auszugestalten, und vom Inneren des Rasierergehäuses her zu beleuchten. Infolge eines Phasenübergangs kann sich das optische Transmissionsverhalten des Wärmespeichermaterials ändern, sodass dem Benutzer auch eine optische Kontrollmöglichkeit hinsichtlich des Zustands des Latentwärmespeichers zur Verfügung gestellt werden kann.In this case, provision may be made, in particular, for the housing of the latent heat accumulator to be at least partially transparent, and to be illuminated from the interior of the shaver housing. As a result of a phase transition, the optical transmission behavior of the heat storage material may change, so that the user can also be provided an optical control option with regard to the state of the latent heat storage.

Neben einer Ausbildung als Latentwärmespeicher ist grundsätzlich auch ein mit Wasser gefüllter Kühlkörper denkbar. Dabei kann die verhältnismäßig große Wärmekapazität und/oder Schmelzwärme von Wasser ausgenutzt werden.In addition to training as latent heat storage is basically a filled with water heatsink conceivable. In this case, the relatively large heat capacity and / or heat of fusion can be exploited by water.

Nach einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass der Kühlkörper zur Aufnahme einer Flüssigkeit ausgebildet ist, welche aufgrund der vom aktiven Thermoelement erzielbaren Wärmeeinwirkung verdampft. So könnte vorgesehen sein, den Kühlkörper als Flüssigkeits- oder Wasserverdampfer auszugestalten, indem dieser einen gut wärmeleitenden und porösen Werkstoff aufweist, welcher vor der Rasur etwa mit kaltem Wasser getränkt wird. Im Betrieb des Thermoelements würde dieser Kühlkörper eine Aufheizung erfahren, wobei jedoch durch die einsetzende Verdampfung des Wassers und die Trocknung dieses Kühlkörpers dem Gesamtsystem Wärme entzogen werden kann.According to a further embodiment of the invention, it is provided that the heat sink is designed to receive a liquid which evaporates due to the heat action achievable by the active thermocouple. So it could be provided to design the heat sink as a liquid or water evaporator by this has a good thermal conductivity and porous material which is soaked before shaving with about cold water. During operation of the thermocouple, this heat sink would experience heating, but heat can be withdrawn from the overall system due to the onset of evaporation of the water and the drying of this heat sink.

Weiterhin ist vorgesehen, dass die Temperatur des aktiven Thermoelements vom Benutzer einstellbar regelbar ist, und dass das Thermoelement wahlweise zum Kühlen als auch zum Erwärmen des passiven Kühlelements und entsprechend entgegengerichtet des Kühlkörpers ausgebildet ist. Eine Richtungsumkehr des Kühleffektes kann insbesondere dann von Vorteil sein, um den Kühlkörper etwa vor Inbetriebnahme des Rasierers aktiv zu kühlen, damit dieser im Betrieb nicht auf eine übermäßig hohe Temperatur aufgeheizt wird.It is further provided that the temperature of the active thermocouple is adjustable adjustable by the user, and that the thermocouple is designed either for cooling and for heating the passive cooling element and correspondingly opposite to the heat sink. A reversal of the direction of the cooling effect can be particularly advantageous for actively cooling the heat sink, for example before the razor is put into operation, so that it is not heated to an excessively high temperature during operation.

Des Weiteren kann durch die Umkehrung des Kühleffektes ein Aufheizen des thermisch mit dem Scherkopf gekoppelten passiven Kühlelementes erreicht werden. Ein solches Aufheizen ist in Verbindung mit einer Reinigungsprozedur der unmittelbar benachbart angeordneten Scher- und Schneidteile von Vorteil, welche beispielsweise mit Hilfe einer Reinigungsstation mit einem wässrigen oder alkoholhaltigen Reinigungsfluid getränkt werden und nach der Reinigung unter Einwirkung der vom passiven Kühlelement zur Verfügung gestellten Wärmemenge besser getrocknet werden können.Furthermore, by reversing the cooling effect, a heating of the thermally coupled with the shaving head passive cooling element can be achieved. Such heating is advantageous in connection with a cleaning procedure of the immediately adjacent shear and cutting parts, which are soaked, for example with the aid of a cleaning station with an aqueous or alcoholic cleaning fluid and better dried after cleaning under the action of the heat provided by the passive cooling element can be.

Auch ist denkbar, während einer solchen Reinigungsprozedur den Kühlkreislauf umzukehren, um etwa die Reinigungsflüssigkeit aufzuheizen, was sich vorteilhaft auf die Reinigung als solche auswirken kann.It is also conceivable to reverse the cooling circuit during such a cleaning procedure in order to heat up the cleaning liquid, for example, which may have an advantageous effect on the cleaning as such.

Nach einem weiteren Aspekt betrifft die Erfindung eine Ladestation für einen elektrisch angetriebenen Rasierer, wobei die Ladestation eine Aufnahme für ein Rasierergehäuse aufweist und mit Lademitteln zum Aufladen von zumindest einem im Rasierergehäuse angeordneten elektrischen Akkumulator ausgestattet ist.According to a further aspect, the invention relates to a charging station for an electrically driven razor, wherein the charging station has a receptacle for a razor housing and is equipped with charging means for charging at least one arranged in the razor housing electrical accumulator.

Dabei ist ferner vorgesehen, dass die elektrischen Kopplungsmittel, etwa in Form von federbeweglichen Kontaktstiften, nicht nur eine Stromversorgung für die aufzuladenden und im Rasierergehäuse befindlichen Akkumulatoren zur Verfügung stellen, sondern darüber hinaus zur Kopplung eines im Rasierergehäuse angeordneten aktiven Thermoelements des Rasierers mit einer Steuer- und Regeleinheit der Ladestation ausgebildet sind. Auf diese Art und Weise kann ein in der Ladestation abgestellter und mit einem aktiven Thermoelement, ggf. auch mit einem Kühlkörper versehener Rasierer bereits in der Ladestation vor Inbetriebnahme des Rasierers auf ein vorgegebenes Temperaturniveau abgekühlt werden.It is further provided that the electrical coupling means, such as in the form of spring-movable contact pins, not only provide a power supply for the batteries to be charged and located in the shaver housing accumulators, but also for coupling an arranged in the shaver housing active thermocouple of the shaver with a control and control unit of the charging station are formed. In this way, a razor parked in the charging station and provided with an active thermocouple, possibly also with a heat sink, can already be cooled to a predetermined temperature level in the charging station before the razor is put into operation.

Dabei kann insbesondere der am Rasierer vorgesehene Wärmespeicher, bzw. Kühlkörper abgekühlt werden. Ferner ist denkbar, dass die Ladestation dazu ausgebildet ist, Energie vom infolge eines Rasiervorgangs aufgeheizten Kühlkörpers abzuführen und wieder in elektrische Energie umzuwandeln. Dabei kann insbesondere vorgesehen werden, die gespeicherte Wärme aus dem Kühlkörper über das daran gekoppelte Peltier-Element in die Ladestation zurückzuführen und zum Aufladen der im Gehäuse des Rasierers befindlichen Akkumulatoren zu verwenden.In particular, the heat store or heat sink provided on the razor can be cooled. Furthermore, it is conceivable that the charging station is designed to dissipate energy from the heat sink, which has been heated up as a result of a shaving operation, and to convert it back into electrical energy. In this case, it can be provided, in particular, to return the stored heat from the heat sink via the Peltier element coupled thereto to the charging station and to use it for charging the batteries located in the housing of the razor.

Die Ladestation bzw. ihre Steuer- und Regeleinheit sind insbesondere dazu ausgebildet, einen mit dem aktiven Thermoelement des Rasierers thermisch gekoppelten Kühlkörper mittels des Thermoelementes zu kühlen und gleichzeitig ein passives, mit dem Thermoelement thermisch gekoppeltes Kühleelement, welches sich bis an oder in einen Scherkopf des Rasierers hinein erstreckt, zu Reinigungszwecken zu erwärmen. Ein solch gekoppeltes Kühlen oder Erwärmen von Kühlkörper und Kühlelement kann in vorteilhafter Weise in einen Ladeprozess des Rasierers integriert oder damit zeitlich gekoppelt werden.The charging station or its control and regulating unit are in particular designed to cool a heat sink thermally coupled to the active thermocouple of the shaver by means of the thermocouple and at the same time a passive, thermally coupled to the thermocouple cooling element, which extends to or into a shaving head of Razor extends into it, to heat for cleaning purposes. Such coupled cooling or heating of the heat sink and cooling element can be advantageously integrated into a charging process of the razor or temporally coupled thereto.

Weitere Ziele, Merkmale sowie vorteilhafte Ausgestaltungen der Erfindung werden unter Bezugnahme auf die Zeichnungen anhand der nachfolgenden Ausführungsbeispiele beschrieben. Dabei bilden sämtliche beschriebenen als auch bildlich wiedergegebenen Merkmale sowohl in Alleinstellung als auch jeglicher sinnvollen Kombination den Gegenstand der vorliegenden Erfindung; auch unabhängig von den Patentansprüchen und deren Rückbezügen zueinander.Other objects, features and advantageous embodiments of the invention will be described with reference to the drawings with reference to the following embodiments. Here are all described as well as figuratively reproduced features both alone and any meaningful combination, the subject of the present invention; also independent of the patent claims and their references to each other.

Es zeigen:

Fig. 1
eine schematische Darstellung eines elektrischen Rasierers mit einem an ein Thermoelement gekoppelten passiven Kühlkörper,
Fig. 2
eine Ausgestaltung eines elektrischen Rasierers mit einem Latentwärmespeicher,
Fig. 3
eine weitere Ausgestaltung des Rasierers, wobei ein Mittelschneider des Scherkopfs von zwei Stegen eines passiven Kühlelements umfasst ist und
Fig. 4
eine praxisnahe Ausführung der Erfindung die sich durch optimale Effizienz der Kühleinrichtung auszeichnet.
Show it:
Fig. 1
1 is a schematic representation of an electric razor with a passive heat sink coupled to a thermocouple;
Fig. 2
an embodiment of an electric shaver with a latent heat storage,
Fig. 3
a further embodiment of the razor, wherein a central cutter of the shaving head is comprised of two webs of a passive cooling element, and
Fig. 4
a practical embodiment of the invention which is characterized by optimum efficiency of the cooling device.

Dabei werden in der nachstehenden Beschreibung anhand der Figuren für einander entsprechende Teile jeweils die selben Bezugszeichen gewählt.The same reference numerals are used in the following description with reference to the figures for corresponding parts.

Der in Fig. 1 schematisch gezeigte Rasierer 1 weist ein Gehäuse 2 und einen am oberen Endabschnitt des Gehäuses 2 angeordneten Scher- oder Schneidkopf 3 auf. Im Gehäuse sind zwei voneinander unabhängige Akkumulatoren 10, 11 untergebracht, wobei der Akkumulator 10 einen Motor 9 antreibt, welcher in mechanischer Wirkverbindung mit dem am Scher- oder Schneidkopf 3 angeordneten Scher- oder Schneidteilen 4, 5 steht. Die Scher- und Schneidteile 4, 5 sind mittels Druckfedern 14 federbelastet gegenüber einem als umlaufende Kühlleiste ausgebildeten passiven Kühlelements 6 gelagert.The in Fig. 1 Razor 1 shown schematically has a housing 2 and a shear or cutting head 3 arranged at the upper end portion of the housing 2. In the housing two independent accumulators 10, 11 are housed, wherein the accumulator 10 drives a motor 9, which is in mechanical operative connection with the shearing or cutting head 3 arranged shear or cutting parts 4, 5. The shearing and cutting parts 4, 5 are spring-loaded by means of compression springs 14 against a designed as a circumferential cooling strip passive cooling element 6.

Das Kühlelement 6 weist seitlich der elektrisch betriebenen Scher- und Schneidteile 4, 5 hervorstehende und gegenüber den freien Endabschnitten der Scherteile 4, 5 zurückversetzte abgerundete Vorsprünge oder Stege 20, 21 auf, welche im Rasierbetrieb mit den zu rasierenden Hautflächen in Kontaktstellung gelangen sollen. Das passive Kühlelement 6 ist innerhalb des Rasierergehäuses 2 mit einem aktiven elektrisch betätigbaren Thermoelement 7, welches als Peltier-Element ausgebildet sein kann, thermisch gekoppelt.The cooling element 6 has laterally of the electrically operated shear and cutting parts 4, 5 projecting and compared to the free end portions of the shearing parts 4, 5 recessed rounded projections or webs 20, 21, which should reach in shaving operation with the skin surfaces to be shaved in contact position. The passive cooling element 6 is within the razor housing 2 with an active electrically actuated Thermocouple 7, which may be formed as a Peltier element, thermally coupled.

Das Thermoelement 7 kann mittels eines separaten Akkumulators 11 betrieben werden, um unabhängig von der Kühlfunktion des Rasierers, welche einen vergleichsweise hohen Energiebedarf hat, eine ausreichend lange Rasierleistung über den Akkumulator 10 zur Verfügung stellen zu können.The thermocouple 7 can be operated by means of a separate accumulator 11 in order to be able to provide a sufficiently long shaving power via the accumulator 10, independently of the cooling function of the shaver, which has a comparatively high energy requirement.

An der dem passiven Kühlelement 6 abgewandten Seite ist an dem Thermoelement 7 ein Kühlkörper 8 angeordnet. Nach Ausführung gemäß Fig. 1 weist dieser Kühlkörper nach außen weisende Kühlrippen auf, welche von einem innerhalb des Gehäuses und mittels des Motors 9 antreibbaren Lüfters 13 und einen sich daran anschließenden Kühlkanal 12 mit Kühlluft beaufschlagt werden kann. Der Kühlkörper 8 als auch der Kühlkanal 12 können dabei so ausgebildet sein, dass ein für den Benutzer kaum wahrnehmbarer Luftstrom aus dem Gehäuse 2 entweicht, sodass im Endeffekt der Rasierkomfort durch den Luftstrom für den Benutzer nur unmerklich beeinträchtigt ist.On the side facing away from the passive cooling element 6, a heat sink 8 is arranged on the thermocouple 7. After execution according to Fig. 1 has this heat sink to the outside facing cooling fins, which can be acted upon by a within the housing and by means of the motor 9 driven fan 13 and an adjoining cooling channel 12 with cooling air. The heat sink 8 and the cooling channel 12 can be designed so that a barely perceptible to the user airflow escapes from the housing 2, so that in the end the shaving comfort is impaired by the air flow to the user only imperceptibly.

Das passive Kühlelement 6 kann insbesondere als Kühlleiste oder Kühlflansch ausgebildet sein und sämtliche Scher- oder Schneidteile 4, 5 des Scher- oder Schneidkopfs 3 des Rasierers 1 umgeben. Als geeignete Materialien für das passive Kühlelement 6 kommt beispielsweise Aluminium oder Zink infrage, wobei das Bauteil 6 mittels Aluminium- oder Zinkdruckguss gefertigt werden kann. Dabei ist insbesondere vorgesehen, dass das passive Kühlelement 6 als massives Bauteil im Wesentlichen ohne Hohlräume ausgebildet ist, um eine ausreichende Wärmeübertragung zur Verfügung stellen zu können.The passive cooling element 6 may in particular be designed as a cooling strip or cooling flange and surround all shearing or cutting parts 4, 5 of the shearing or cutting head 3 of the shaver 1. As suitable materials for the passive cooling element 6, for example, aluminum or zinc comes into question, wherein the component 6 can be manufactured by means of aluminum or zinc die-cast. It is provided in particular that the passive cooling element 6 is designed as a solid component substantially without cavities in order to provide sufficient heat transfer available.

Dabei ist ferner vorgesehen, dass das zumindest bereichsweise umlaufende und den Scherkopf 3 seitlich umgebende Kühlelement 6 mit seinen abgerundeten Vorsprüngen oder Kühlleisten gleichzeitig als eine Art kraftbegrenzender Anschlag in Betrieb des Rasierers fungiert. So kann die Kühlleiste, bzw. das passive Kühlelement 6 derart ausgebildet sein, dass es den Bauraum zwischen den Schneidteilen 4, 5 einnimmt und/oder als Halterung für die Schneidteile, insbesondere für das Mittelteil 5 fungiert.It is further provided that the at least partially circulating and the shaving head 3 laterally surrounding cooling element 6 with its rounded projections or cooling bars simultaneously acts as a kind of force limiting stop in operation of the shaver. Thus, the cooling strip, or the passive cooling element 6 may be formed such that it occupies the space between the cutting parts 4, 5 and / or acts as a holder for the cutting parts, in particular for the middle part 5.

Die nach oben weisenden Fortsätze 20, 21 des passiven Kühlelements 6 sind in der in Fig. 1 gezeigten Grundstellung des Rasierers gegenüber den oberen freien Endabschnitten der Scher- und Schneidteile 4, 5 etwas zurückgesetzt. Da die Scher- und Schneidteile 4, 5 federbelastet gelagert sind, können diese bei einem von der zu rasierenden Haut aufgebrachten Gegendruck etwas zurückweichen, sodass das passive Kühlelement 6 mit seinen stegartig ausgebildeten Fortsätzen 20, 21 mit der zu rasierenden Haut in Anlagestellung gelangt.The upwardly facing extensions 20, 21 of the passive cooling element 6 are in the in Fig. 1 shown basic position of the razor against the upper free end portions the shear and cutting parts 4, 5 reset a bit. Since the shearing and cutting parts 4, 5 are mounted spring-loaded, they can recede slightly at a counter-pressure applied by the skin to be shaved, so that the passive cooling element 6 comes with his web-like extensions 20, 21 with the skin to be shaved in investment position.

Gleichzeitig kann durch die Ausgestaltung der Kühlstege 20, 21 ein Zusammendrücken der Federelemente 14 auf ein bestimmtes Maß begrenzt werden, sodass durch die Wahl entsprechender Federkonstanten für die Druckfedern 14 und durch die geometrische Ausgestaltung der Kühlleisten 20, 21 und der Schneid- und Scherteile 4, 5 ein für die Rasur optimaler Anpressdruck zwischen den Scher- und Schneidteilen 4, 5 und der Haut zur Verfügung gestellt werden kann.At the same time, compression of the spring elements 14 can be limited to a certain extent by the configuration of the cooling webs 20, 21, so that the choice of corresponding spring constants for the compression springs 14 and by the geometric configuration of the cooling strips 20, 21 and the cutting and shearing parts 4, 5 can be provided for shaving optimal contact pressure between the shear and cutting parts 4, 5 and the skin.

Der Einbau des Peltier-Elements 7 im Rasierergehäuse, insbesondere an einem seitlichen Rand des Rasierergehäuses stellt einen effektiven Stoßschutz für das Peltier-Element zur Verfügung, insbesondere wenn der gesamte Rasierer der Hand eines Anwenders entgleitet und zu Boden fällt. Dies begünstigt außerdem die Abdichtung des Gerätes gegen Schmutz und Wasser bzw. Feuchtigkeit.The incorporation of the Peltier element 7 in the shaver housing, particularly at a lateral edge of the shaver housing, provides effective shock protection for the Peltier element, particularly when the entire shaver slips off a user's hand and falls to the ground. This also favors the sealing of the device against dirt and water or moisture.

Die Ausgestaltung gemäß Fig. 2 weist ein Latentwärmespeicher 18 anstelle eines mit Kühlrippen versehenen Kühlkörpers 8 auf. Der Latentwärmespeicher 18 kann beispielsweise mit Paraffin gefüllt und zumindest bereichsweise transparent ausgestaltet sein. Zusätzlich ist denkbar, dass der Latentwärmespeicher 18 bzw. sein Gehäuse von innen her beleuchtet wird, sodass bei Verflüssigung des Latentwärmespeicher-Materials im Betrieb des Thermoelements 7 ein für den Benutzer wahrnehmbarer optischer Effekt entsteht, der dem Benutzer den gegenwärtigen Betriebszustand des Peltier-Elements 7 und/oder des Latentwärmespeichers signalisieren kann.The embodiment according to Fig. 2 has a latent heat accumulator 18 instead of a cooling body 8 provided with cooling fins. The latent heat storage 18 may be filled, for example with paraffin and at least partially configured to be transparent. In addition, it is conceivable that the latent heat accumulator 18 or its housing is illuminated from the inside, so that upon liquefaction of the latent heat storage material during operation of the thermocouple 7 a perceptible for the user optical effect arises, the user the current operating state of the Peltier element. 7 and / or the latent heat storage can signal.

Anstelle eines Latentwärmespeichers ist auch denkbar, den Kühlkörper 18 mit Wasser zu füllen oder den Kühlkörper selbst als porösen Werkstoff auszubilden, der eine im Betrieb des Peltier-Elements 7 verdampfende Flüssigkeit, etwa Wasser aufnimmt.Instead of a latent heat storage is also conceivable to fill the heat sink 18 with water or form the heat sink itself as a porous material that receives a vaporizing in operation of the Peltier element 7 liquid, such as water.

Mittels des Peltier-Elements 7 ist eine individuelle, an die Wünsche und Belange des Anwenders individuell anpassbare Kühlung erzielbar. Insbesondere kann mittels eines vom Benutzer einstellbaren Betätigungselements die Kühltemperatur des Kühlkörpers 6 eingestellt werden.By means of the Peltier element 7 is an individual, to the wishes and concerns of the user individually customizable cooling achievable. In particular, by means of a User adjustable actuator the cooling temperature of the heat sink 6 can be adjusted.

Die Verwendung eines Peltier-Elements als aktives Thermoelement ermöglicht zudem auch eine umgekehrte Kühl- bzw. Heizfunktion. Wird das Peltier-Element etwa pulsierend oder umgepolt betrieben, so kann auch ein nach dem Rasiervorgang aufgeheizter Wärmespeicher 18, 8 auch aktiv abgekühlt werden. Ergänzend ist denkbar, diejenigen thermisch mit dem Peltier-Element 7 gekoppelten Elemente Kühlelement 6 und Kühlkörper 8 von selbst auf Raumtemperatur abkühlen zu lassen und dabei den Seebeck-Effekt unter Gewinnung von elektrischer Energie auszunutzen.The use of a Peltier element as an active thermocouple also allows a reverse cooling or heating function. If the Peltier element is operated in an approximately pulsating or reversed manner, a heat store 18, 8 which has been heated up after the shaving operation can also be actively cooled. In addition, it is conceivable that those thermally coupled with the Peltier element 7 elements cooling element 6 and heat sink 8 to cool by itself to room temperature and thereby exploit the Seebeck effect to obtain electrical energy.

Dies ist insbesondere dann von Vorteil, wenn der Rasierer 1, insbesondere nach Gebrauch in einer Ladestation aufbewahrt wird, die ggf. mit einer Reinigungseinrichtung gekoppelt sein kann. Insoweit ist denkbar, dass die vom Peltier-Element 7 erzeugbare elektrische Energie in die Ladestation überführt werden kann und dort zum Aufladen der Akkumulatoren 10, 11 des Rasierers 1 Verwendung findet. Ergänzend ist denkbar, dass die Ladestation mittels einer dafür vorgesehenen Steuer- und Regeleinrichtung vor Inbetriebnahme des Rasierers den Kühlkörper 8, 18 auf eine vorgegebene Temperatur herunterkühlt, sodass im Betrieb des Rasierers eine entsprechend große Kühlleistung zur Verfügung gestellt werden kann.This is particularly advantageous when the razor 1, in particular after use, is stored in a charging station, which may possibly be coupled to a cleaning device. In that regard, it is conceivable that the electrical energy which can be generated by the Peltier element 7 can be transferred to the charging station and used there for charging the batteries 10, 11 of the razor 1. In addition, it is conceivable that the charging station cools the heat sink 8, 18 to a predetermined temperature by means of a dedicated control and regulating device before the razor is put into operation, so that a correspondingly large cooling capacity can be provided during operation of the razor.

Bei Ausführungsbeispielen, bei welchen die Ladestation gleichermaßen mit einer Reinigungseinrichtung versehen ist, bei welcher die Scher- und Schneidteile 4, 5 des Rasierers in eine Reinigungsflüssigkeit getaucht werden, ist es ferner denkbar, das Kühlelement 6, 16 als Heizelement zu betreiben, um die Reinigungsflüssigkeit, welche die Scher- und Schneidteile 4, 5 umspült, aufzuheizen, sodass insgesamt eine bessere Reinigungsleistung erzielt werden kann.In embodiments in which the charging station is equally provided with a cleaning device in which the shearing and cutting parts 4, 5 of the razor are immersed in a cleaning liquid, it is also conceivable to operate the cooling element 6, 16 as a heating element to the cleaning liquid , which surrounds the shear and cutting parts 4, 5, to heat, so that overall better cleaning performance can be achieved.

In Figur 3 ist eine alternative Ausgestaltung eines passiven Kühlelements 16 gezeigt, welches mit seinen freien nach oben ragenden, gabelartig ausgebildeten Endabschnitt einen Mittelschneider 5 des Scherkopfs umfasst. Anstelle einer umlaufenden Kühlleite, wie in den Figuren 1 und 2 dargestellt ist das Kühlelement zwischen dem Mittelschneider und den außen zu liegen kommenden Scher- oder Schneidteilen 4 angeordnet. Diese aber auch der Mittelschneider 5 sind federbelastet am Scherkopf und verschieblich gegenüber dem Kühlelement gelagert, sodass beim Rasieren die Scher- oder Schneidteile 4 zumindest geringfügig durch einen von der Haut des Anwenders aufbringbaren Gegendruck zurückweichen, wodurch ein unmittelbarer Kontakt von Kühlelement 16 und Haut erreicht werden kann.In FIG. 3 an alternative embodiment of a passive cooling element 16 is shown, which comprises with its free upwardly projecting, fork-shaped end portion a central cutter 5 of the shaving head. Instead of a circulating cooling line, as in the FIGS. 1 and 2 shown, the cooling element between the center cutter and the outside to come shear or cutting parts 4 is arranged. These but also the central cutter 5 are spring loaded on the shaving head and slidably mounted relative to the cooling element, so that when shaving the shear or Cutting parts 4 at least slightly by a back-apply from the skin of the user back pressure, whereby a direct contact of the cooling element 16 and skin can be achieved.

Gemäß Fig. 4 treibt der Elektromotor 9, dessen Abtriebswelle einen Exzenter 25 aufweist, über Schwingbrücken 26 in an sich bekannter Weise die bewegbaren Scherelemente des Scherteils 4 bzw. des Schneidteils 5 an. Die dem Scherkopf 3 zugewandte Stirnseite des Gehäuses 2 ist als Kühlkörper 8 ausgeführt, der dichtend mit dem als Kühlkörper oder Wärmespeicher 18 ausgebildeten oberen Gehäuseabschnitt verbunden ist. Die beiden Bauteile 8 und 18 sind vorzugsweise aus Aluminium hergestellt und bilden das Gerätechassis. Dieses ist einerseits besonders stabil, kann aber darüber hinaus eine bedeutend große Abwärmemenge des Thermoelements 7, welches insbesondere als Peltier-Element ausgeführt ist, aufnehmen und anschließend an die Umgebung abgeben.According to Fig. 4 drives the electric motor 9, the output shaft has an eccentric 25, via swing bridges 26 in a conventional manner, the movable shear elements of the cutting part 4 and the cutting part 5 at. The shaving head 3 facing front side of the housing 2 is designed as a heat sink 8, which is sealingly connected to the heat sink 18 formed as a heat sink or upper housing portion. The two components 8 and 18 are preferably made of aluminum and form the device chassis. This is on the one hand particularly stable, but can also record a significantly large amount of waste heat of the thermocouple 7, which is designed in particular as a Peltier element, and then deliver it to the environment.

Im Bereich zwischen den beiden Scherteilen 4 mindestens ein Thermoelement 7 oder aber mehrere Thermoelemente hintereinander auf dem Kühlkörper 8 und zwar mit der warmen Seite 27 befestigt. Auf der kalten Seite 28 des Thermoelements 7 ist ein balkenförmiges passives Kühlelement oder Kühlleiste 6 angeordnet, welches sich zwischen die beiden Scherteile 4 nach oben erstreckt. Die vertikale Erstreckung ist dabei derart gewählt, dass der obere Endabschnitt 29 die zu rasierende Haut während der Rasur kontaktieren kann. Die Kühlleiste 6 stellt gleichzeitig einen mechanischen Schutzbügel für die dar, sollte der Rasierer einmal herunterfallen. Das Schneidteil 5 ist innerhalb einer Nut der Kühlleiste 6 angeordnet.In the area between the two shearing parts 4 at least one thermocouple 7 or several thermocouples in succession on the heat sink 8 and that with the warm side 27 attached. On the cold side 28 of the thermocouple 7, a beam-shaped passive cooling element or cooling strip 6 is arranged, which extends between the two parts of the shears 4 upwards. The vertical extent is chosen such that the upper end portion 29 can contact the skin to be shaved during shaving. The cooling bar 6 at the same time provides a mechanical protection bar for when the razor falls down once. The cutting part 5 is arranged within a groove of the cooling strip 6.

Die Scherteile 4 und/oder das Schneidteil 5 und/oder die Kühlleiste 6 können federnd mit dem Gehäuse 2 verbunden sein, um ein optimale Anpassung an die Kontur der zu rasierenden Haut sicherzustellen.The shearing parts 4 and / or the cutting part 5 and / or the cooling strip 6 may be resiliently connected to the housing 2 in order to ensure optimum adaptation to the contour of the skin to be shaved.

Claims (15)

  1. Electrically driven shaver comprising a shaver housing (2) and a shaving head (3) arranged at said shaver housing (2), at which shaving head (3) is mounted at least one shaving or cutting part (4, 5) which can be driven by an electric motor (9) arranged in the shaver housing (2), wherein at least one electrically operable active thermal element (7) is provided, wherein a side of the thermal element (7) that can be cooled relative to the ambient temperature is thermally coupled with a passive cooling element (6; 16), wherein the passive cooling element (6; 16) comes to be situated with at least one free end segment (20, 21) on or in the region of the shaving head (3) such that it comes into contact with the skin of a user during shaving operation, characterized in that the passive cooling element is designed as a solid component, and in that the passive cooling element is designed separately and independently of those functional parts of the shaver which are provided to trim hairs and are designed for this.
  2. Shaver according to claim 1, wherein the passive cooling element (6; 16) is designed as a solid component essentially without voids.
  3. Shaver according to one of the preceding claims, wherein the passive cooling element (6; 16) laterally surrounds the shaving or cutting part (4, 5), at least in segments.
  4. Shaver according to one of the preceding claims, wherein during operation of the shaver the passive cooling element (6; 16) with its free end segment (20, 21) facing toward the skin of the user comes to be situated set back relative to the shaving or cutting part (4, 5).
  5. Shaver according to one of the preceding claims, wherein the passive cooling element (6; 16) is designed as a receptacle for at least one spring element (14) which provides an elastic suspension of the shaving or cutting part (4, 5) on the shaving head (3).
  6. Shaver according to one of the preceding claims, wherein the passive cooling element (6; 16) has at least one rounded projection (20, 21) in the region of the shaving head (3), which rounded projection (20, 21) extends parallel to the longitudinal dimension of the at least one shaving or cutting part (4).
  7. Shaver according to one of the preceding claims, wherein the passive cooling element (16) comprises at least one outwardly directed projection which comes to be situated between a foil cutter (4) and a middle cutter (5) of the shaving head (3).
  8. Shaver according to one of the preceding claims, wherein the active thermal element (7) is designed as a Peltier element.
  9. Shaver according to one of the preceding claims, wherein the active thermal element (7) is thermally coupled with a side that comprises a cooling body (8; 18) and heats up relative to the ambient temperature.
  10. Shaver according to claim 9, wherein the cooling body (18) has a latent-heat accumulator.
  11. Shaver according to one of the preceding claims 9 or 10, wherein the cooling body (8; 18) is designed to accommodate a fluid which vaporizes due to the effect of heat that can be achieved by the active thermal element (7).
  12. Shaver according to one of the preceding claims 9 through 10, wherein the thermal element (7) is coupled gas- and/or moisture-tight with the cooling body (8; 18) and/or with the cooling element (6).
  13. Shaver according to one of the preceding claims, wherein the temperature of the active thermal element (7) can be regulated, and the thermal element (7) is alternately designed to cool as well as heat the passive cooling element (6; 16).
  14. Charging station and electrically powered shaver (1) according to claim 1, wherein the charging station has a receptacle for the shaver housing (2) and charging means for charging at least one electrical storage battery (10, 11) arranged in the shaver housing (2), and wherein the charging station has electrical coupling means for coupling the active thermal element (7) of the shaver with a control and regulating unit of the charging station.
  15. Charging station and electrically powered shaver (1) according to claim 14, wherein the control and regulating unit is designed to cool a cooling body (8; 18) thermally coupled with the active thermal element (7) of the shaver (1) by means of said thermal element (7), and for cleaning purposes to simultaneously heat a passive cooling element (6; 16) thermally coupled with said thermal element (7), which cooling element (6; 16) extends up to or into a shaving head (3) of the shaver (1).
EP14189665.4A 2008-07-08 2009-07-03 Electric razor with integrated cooling Active EP2851165B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008032150A DE102008032150A1 (en) 2008-07-08 2008-07-08 Electric shaver with integrated cooling
PCT/EP2009/004852 WO2010003603A1 (en) 2008-07-08 2009-07-03 Electric razor having integrated cooling
EP09776964.0A EP2323816B1 (en) 2008-07-08 2009-07-03 Electric razor having integrated cooling

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP09776964.0A Division EP2323816B1 (en) 2008-07-08 2009-07-03 Electric razor having integrated cooling

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Publication Number Publication Date
EP2851165A1 EP2851165A1 (en) 2015-03-25
EP2851165B1 true EP2851165B1 (en) 2018-09-12

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Family Applications (5)

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EP09776964.0A Active EP2323816B1 (en) 2008-07-08 2009-07-03 Electric razor having integrated cooling
EP14189668.8A Active EP2853361B1 (en) 2008-07-08 2009-07-03 Electric razor with integrated cooling
EP14189666.2A Active EP2853360B1 (en) 2008-07-08 2009-07-03 Electric razor with integrated cooling
EP14189669.6A Withdrawn EP2851166A1 (en) 2008-07-08 2009-07-03 Charging station for an electric razor with integrated cooling
EP14189665.4A Active EP2851165B1 (en) 2008-07-08 2009-07-03 Electric razor with integrated cooling

Family Applications Before (4)

Application Number Title Priority Date Filing Date
EP09776964.0A Active EP2323816B1 (en) 2008-07-08 2009-07-03 Electric razor having integrated cooling
EP14189668.8A Active EP2853361B1 (en) 2008-07-08 2009-07-03 Electric razor with integrated cooling
EP14189666.2A Active EP2853360B1 (en) 2008-07-08 2009-07-03 Electric razor with integrated cooling
EP14189669.6A Withdrawn EP2851166A1 (en) 2008-07-08 2009-07-03 Charging station for an electric razor with integrated cooling

Country Status (7)

Country Link
US (1) US8555510B2 (en)
EP (5) EP2323816B1 (en)
JP (1) JP5474957B2 (en)
CN (1) CN102089127B (en)
DE (1) DE102008032150A1 (en)
RU (1) RU2482958C2 (en)
WO (1) WO2010003603A1 (en)

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Also Published As

Publication number Publication date
EP2851165A1 (en) 2015-03-25
CN102089127B (en) 2014-12-31
EP2851166A1 (en) 2015-03-25
WO2010003603A1 (en) 2010-01-14
CN102089127A (en) 2011-06-08
JP2011527204A (en) 2011-10-27
RU2482958C2 (en) 2013-05-27
EP2853360B1 (en) 2016-08-24
DE102008032150A1 (en) 2010-01-14
EP2853361A1 (en) 2015-04-01
EP2853361B1 (en) 2016-08-24
EP2323816B1 (en) 2014-10-22
US20110099814A1 (en) 2011-05-05
US8555510B2 (en) 2013-10-15
EP2853360A1 (en) 2015-04-01
JP5474957B2 (en) 2014-04-16
RU2011103025A (en) 2012-08-20
EP2323816A1 (en) 2011-05-25

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