EP4181626A1 - Bag with heating means comprising graphene - Google Patents

Bag with heating means comprising graphene Download PDF

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Publication number
EP4181626A1
EP4181626A1 EP22206328.1A EP22206328A EP4181626A1 EP 4181626 A1 EP4181626 A1 EP 4181626A1 EP 22206328 A EP22206328 A EP 22206328A EP 4181626 A1 EP4181626 A1 EP 4181626A1
Authority
EP
European Patent Office
Prior art keywords
bag
compartment
heating means
graphene
heating
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.)
Pending
Application number
EP22206328.1A
Other languages
German (de)
French (fr)
Inventor
Valentin CREMADES
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.)
Val Top
Original Assignee
Val Top
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Val Top filed Critical Val Top
Publication of EP4181626A1 publication Critical patent/EP4181626A1/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145—Carbon only, e.g. carbon black, graphite
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
    • A63B2225/64—Heated
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2243/00—Specific ball sports not provided for in A63B2102/00 - A63B2102/38
    • A63B2243/0062—Petanque
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B47/00—Devices for handling or treating balls, e.g. for holding or carrying balls
    • A63B47/005—Ball heating devices
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B67/00—Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
    • A63B67/06—Ring or disc tossing games, e.g. quoits; Throwing or tossing games, e.g. using balls; Games for manually rolling balls, e.g. marbles
    • A63B67/066—Ring or disc tossing games, e.g. quoits; Throwing or tossing games, e.g. using balls; Games for manually rolling balls, e.g. marbles using balls on a horizontal playing ground, e.g. petanque
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
    • H05B2214/04—Heating means manufactured by using nanotechnology

Definitions

  • the present invention relates to the field of storage bags, and more particularly to the field of storage bags for sports accessories.
  • bags are intended exclusively for use before and after the practice of sporting activity, and are designed to facilitate the storage of accessories and/or access to them inside the bag.
  • such bags are not designed to improve the practice of sport, by anticipating or by offering functionalities facilitating the practice of sport.
  • bags of the prior art are designed in a manner decorrelated from sports practice, and are only designed for the purpose of transporting accessories.
  • the present invention aims to solve the various technical problems mentioned above.
  • the present invention aims to provide a bag making it possible to modify certain properties, such as the temperature, of sports accessories, before or during sports practice.
  • the present invention also aims to provide a bag making it possible to choose the temperature of one's sports accessories, in particular of one's petanque balls, before or during sports practice.
  • a bag comprising at least one compartment defining an interior volume, and a heating means intended to heat the interior volume of the compartment, in which the heating means comprises graphene, is intended to be connected to an electrical power supply, for example integrated into the bag or external to the bag, and is configured to transform the electrical energy into heat.
  • the bag according to the present invention is therefore designed to allow the user to heat the contents of the bag, to a desired temperature and to the time, in order to improve the use of the objects when they are taken out of the bag.
  • the bag according to the present invention comprises a heating means comprising graphene.
  • the heating means with graphene is particularly advantageous, thanks to a thickness which can be reduced while having high thermal emission and mechanical resistance qualities.
  • such a bag is particularly advantageous for storing and heating balls, in particular courttanque balls.
  • the heating means and advantageously the graphene of the heating means, is mounted in the internal volume of the compartment.
  • the heating means directly in the interior volume of the compartment makes it possible to improve the heat transfers between it and the contents of the compartment, in particular by direct physical contact between the heating means and the objects contained in the compartment. In particular, it is thus possible to heat objects contained in the compartment as a priority, before heating the compartment itself or the air contained in the compartment.
  • the energy used to heat is therefore better managed, mainly targeting the objects contained in the compartment and which may be in direct contact with the heating means, rather than having to first heat the compartment itself and its interior volume before heating. the objects contained inside.
  • the heating means comprises a film of graphene, preferably placed on an inner face of the compartment.
  • the graphene film allows to obtain high thermal results, thanks to its intrinsic properties of electrical conductivity.
  • the graphene film makes it possible to obtain a thin heating medium, that is to say space-saving, water-repellent and mechanically resistant, which makes it possible to expose it in the compartment, for direct contact with the objects contained. in the compartment and need to be heated.
  • the inner face of the compartment on which the graphene film is placed, and the graphene film have, for example locally, a shape at least partially complementary to the shape of the objects intended to be placed in said compartment.
  • the inner face of the compartment on which the graphene film is placed, and the graphene film locally have the shape of a spherical cap. , in particular three spherical caps, whose radius ideally corresponds to that of chertanque balls.
  • the contact surface between the graphene film and the balls contained in the bag is then substantially equal to the surface of the spherical cap formed by the graphene film and the inner face of the compartment.
  • the bag also comprises control means configured to deliver electrical energy from the power supply to the heating means comprising graphene.
  • the power supply of the heating means is controllable, in order to be able to obtain the desired heating, and the desired temperature, for the objects contained in the compartment, while controlling the electrical consumption.
  • the bag also comprises a temperature sensor mounted in the interior volume of the compartment, and the control means is configured to deliver, or not, the electrical energy of the electrical supply to the heating means comprising graphene according to the temperature of the interior volume.
  • the temperature sensor makes it possible to better control the electric power supply of the heating means, by making it possible to determine whether the latter must be increased, reduced or even stopped according to a determined target temperature.
  • control means is configured to heat the interior volume of the compartment to different temperatures.
  • the temperature sensor it is also possible to provide or choose different heating temperatures of the objects contained in the compartment. In particular, it becomes possible to adapt the heating temperature as a function of the initial temperature of the objects, or of the outside temperature for example.
  • control means may comprise one or more buttons mounted on the bag configured to choose a heating temperature, or, on the contrary, comprise a means of communication, for example Bluetooth or Wifi, to an external device, for example a telephone , configured to choose and communicate a heating temperature.
  • a means of communication for example Bluetooth or Wifi
  • the bag also comprises a thermal insulation means, for example a heat-reflecting film, mounted between the exterior on the one hand, and the interior volume and the heating means on the other hand, preferably mounted on or in at least one interior face of the compartment, preferably mounted on or in each of the interior faces of the compartment.
  • a thermal insulation means for example a heat-reflecting film
  • the thermal insulation means makes it possible to reduce thermal losses between the interior of the compartment and the exterior. This limits the energy consumption of the bag, while having the desired temperature for the objects stored in the compartment.
  • a heat-reflecting film allows in particular to improve the thermal insulation properties of the bag, while maintaining a reduced thickness, and therefore a size and a limited weight of the bag.
  • the inner face of the compartment on which the graphene film is placed, and the graphene film locally have the shape of at least one spherical cap.
  • the bag also comprises a thermal insulation air gap mounted between the exterior on the one hand, and the interior volume and the heating means on the other hand, for example between the exterior and an interior face of the compartment, preferably mounted between the exterior and said interior face of the compartment on which the graphene film is placed.
  • a thermal insulation air gap mounted between the exterior on the one hand, and the interior volume and the heating means on the other hand, for example between the exterior and an interior face of the compartment, preferably mounted between the exterior and said interior face of the compartment on which the graphene film is placed.
  • the air gap creates a thermal barrier between the outside and the heating means, further limiting heat loss from the bag during use.
  • the bag is configured to allow local deformation of the inner face of the compartment on which the graphene film is placed, and of the graphene film, at the level of the thermal insulation air gap.
  • the air gap provided between the inner face of the compartment and the outside allows local deformation of said inner face and of the graphene film, in particular under the effect of the weight of the objects placed in said compartment.
  • Such a deformation makes it possible in particular to increase the contact surface between the graphene film and the objects placed in said compartment, and therefore to improve the transfer of heat to said objects.
  • the bag can comprise a double bottom formed by an outer wall and an inner wall on which the graphene film is placed, which delimit the air gap, and the inner wall can be configured to deform locally, under the effect of the weight of the objects positioned in the interior compartment of the bag.
  • the bag also comprises a receiving means mounted in the interior volume, the receiving means comprising at least one individual housing, preferably three, configured to receive an object to be heated, for example a courttanque ball, and optionally a housing to receive power.
  • the receiving means comprising at least one individual housing, preferably three, configured to receive an object to be heated, for example a courttanque ball, and optionally a housing to receive power.
  • the receiving means makes it possible to define locations, or housings, of determined storage spaces.
  • the receiving means makes it possible in particular to hold the object or objects in position inside the compartment. He then becomes possible to maintain the relative positions of said objects and of the heating means, for example physical contact between said objects and the heating means.
  • Such contact is advantageous in the case where the objects to be heated are balls, in particular made of metal or a metal alloy, such as petanque balls.
  • the heating means with graphene makes it possible to obtain effective heating of the ball or balls, despite a reduced contact surface. More specifically, it has been observed that the heating means with graphene made it possible to heat the ball or balls directly, and not via the air contained in the compartment. The heating of the ball(s) then takes place more deeply, making it possible to have longer comfort of use when the user takes it or them out of the bag.
  • said at least one receiving means is configured to allow contact between the object to be heated positioned in the individual housing, and the heating means, preferably the graphene of the heating means, for example in which the receiving means includes a through opening between the individual housing and the heating means, preferably the graphene of the heating means.
  • the individual housing can thus have the shape of a through cylinder whose section corresponds to that of the ball to be placed there.
  • the bottom of the individual housing opens directly onto the heating means, and in particular onto the graphene of the heating means, in order to allow direct contact between it and the ball to be heated, while allowing the ball to be held in position in the compartment .
  • the inner face of the compartment on which the graphene film is placed, and the graphene film locally have the shape of a spherical cap, in particular three spherical caps, the radius of which ideally corresponds to that of courttanque balls, each spherical cap being positioned opposite an individual housing of said receiving means.
  • the receiving means comprises a closed-cell foam, for example made of EVA or polyethylene.
  • closed-cell foam makes it possible to improve the thermal performance of the bag, by allowing heating of the objects placed inside the bag, rather than of the receiving means.
  • the heat produced by the heating means is thus concentrated on the objects to be heated, rather than their environment, which improves the energy efficiency of the bag.
  • THE figures 1 to 3 show different views, in the closed and open state, of a bag 1 according to a first embodiment of the present invention.
  • Bag 1 described below and illustrated on the figures 1 to 3 is in particular intended for the storage and transport of courttanque boules, but may be intended for other uses, in particular for the storage and transport of other sports accessories, in particular outdoor ones.
  • the purpose of the bag 1 is in particular to make it possible to have its sports accessories, in particular its courttanque balls, at the desired temperature, in particular when the outside temperature is low.
  • the bag 1 thus makes sports practice, for example courttanque, more pleasant and for an extended period.
  • the bag 1 comprises a compartment 2 delimiting an interior volume, in which the accessories are intended to be stored.
  • the bag 1 also comprises a heating means 4 used to heat the accessories present in the compartment 2 and operating preferably from an electrical power supply 6, such as a battery.
  • the heating means 4 advantageously comprises graphene, and more specifically a graphene film 8.
  • the graphene film has advantageous electrical conductivity properties for use as a heat emitter.
  • the graphene film 8 is water-repellent and allows uniform heating over its entire surface.
  • the graphene film 8 in particular makes it possible to be directly integrated into the compartment 2 of the bag 1, requiring little space and being mechanically robust.
  • the graphene film 8 can be arranged on one side interior 2a of compartment 2, so that the boules come directly into contact with it when they are stored in the bag 1.
  • the latter are advantageously heated quickly and efficiently, without however altering the physical integrity of the graphene film 8 on which they rest.
  • the graphene film 8 has a surface area similar or of the same order of magnitude as the internal face 2a on which it is placed. Given its low thickness, the graphene film 8 can be envisaged with a relatively large surface area, in order to provide heating distributed in a homogeneous manner in the compartment 2 of the bag 1. Alternatively, the graphene film 8 can be provided with a reduced size, and positioned in a localized manner at the level of the locations where the balls to be heated will be positioned.
  • the graphene film 8 is therefore connected to the power supply 6 in order to be able to heat up.
  • the power supply 6 can be integrated into the bag 1, for example a battery as shown in the figures, or it can be an external power supply.
  • the bag 1 can include a cable to allow connection to a socket, for example 12V or USB of a vehicle, or else to an external battery such as those existing for recharging electronic products. nomads like smartphones.
  • compartment 2 is also thermally insulated from the outside.
  • the compartment 2 may comprise, on its inner faces 2a, a heat-reflecting film, such as a silver film, making it possible to reduce heat losses to the outside when the bag 1 is closed.
  • the bag 1 may include a means of closure, in particular a zipper, specific limiting the circulation of air, and therefore the heat exchanges, between the inside and the outside of the bag 1.
  • the bag 1 can also be formed from a thermally insulating material or include, in its thickness, a thermally insulating layer.
  • the heating means 4 being arranged on the inner face 2a of the compartment, the effectiveness of the latter is not impacted by the presence of an insulating layer within the material forming the bag 1.
  • the bag 1 comprises a control means 10.
  • the control means 10 makes it possible to supply the heating means 4 when it is desired to heat the contents of the bag 1. It allows in particular to limit the electrical consumption of the means of heating 4 by activating and deactivating it only during the periods desired by the user.
  • the control means 10 can comprise an ON/OFF type button, to turn the heating means 4 on and off.
  • the control means 10 can comprise different positions, corresponding for example to different heating times or different heating temperatures. . By successive pressing for example, the user can then select the desired duration or temperature.
  • the control means 10 is preferably mounted outside the compartment 2, for example on the outer surface of the bag 1, so as to allow the user to control it without having to open the compartment 2.
  • the bag 1 can in particular comprise a temperature sensor (not shown) configured to determine the temperature of the heating means 4 or of the interior of the compartment 2.
  • the temperature sensor can advantageously be connected to the control means 10, in order to regulate the power supply of the heating means 4 according to the interior temperature or the heating means 4, and the user's instruction.
  • control means 10 may comprise a successively pressed button, preferably with a luminous indicator, to control the heating means 4.
  • a first press on the control button makes it possible to trigger the heating means 4, with a high set temperature, for example 60° C., allowing a rapid rise in temperature of the balls.
  • the control button may then light up red.
  • a second press on the control button makes it possible to reduce the control temperature, for example to a temperature of 45° C., in order to limit the electrical consumption of the bag 1 while continuing to heat the balls.
  • the button may then light up blue.
  • a third press on the control button makes it possible to further reduce the control temperature, for example to a temperature of 30° C., in order to maintain the balls at temperature, possibly for an extended period.
  • the button may then light up green.
  • the control means may comprise a means of communication, for example Bluetooth or Wifi, to an external device, for example a telephone, configured to select and communicate a temperature of heating.
  • the control means may comprise a means of communication with a mobile electronic device, for example a smartphone, in order to allow the user to determine the temperature of heating, and possibly to view the temperature of the compartment in real time.
  • the management and regulation of the power supply to the heating means 4 can be done directly on the mobile device, for example via a touch screen, which facilitates the use made of it by the user.
  • the control means 10 possibly with the temperature sensor, then makes it possible to limit the electrical consumption of the bag 1, while allowing rapid and efficient heating of the balls.
  • a receiving means 12 is provided, for example in the form of a foam having individual housings.
  • the foam can be chosen with closed cells, and in EVA or polyethylene, in order to limit its thermal inertia and allow the heat to be concentrated on the contents and not on the container.
  • the individual housings can be individual housings 14 intended for courttanque balls: such individual housings 14 are advantageously crossing at the level of the graphene film 8 so as to allow direct contact between the balls and the graphene film 8: the transmission of heat can then be carried out by conduction and by radiation.
  • housings may be provided, for example a housing 16 for the power supply 6, in particular if the latter must be able to be easily removed to be recharged or replaced, as well as housings 18 for other accessories such as jacks .
  • THE figures 4 to 6 show different views, in the closed and open state, of a bag 1' according to a second embodiment of the present invention.
  • the bag 1' includes an air gap 20 placed between the heating means 4 and the outside.
  • the purpose of the air gap 20 is to improve the thermal insulation of the bag 1', between the heating means 4 and the outside.
  • the bag 1' can comprise a double bottom formed by an outer wall 1a and an inner wall 1b which delimit the air gap 20, for example 1 cm thick.
  • the heating means 4, and more particularly the graphene film 8 is then mounted on the inner face of the inner wall 1b which also constitutes the inner face 2a of the compartment 2.
  • the graphene film 8 is then separated from the outside by the inner wall 1b, the air gap 20 and the outer wall 1a, which reduces heat losses to the outside of the bag 1 '.
  • the graphene film 8 can have a shape corresponding to those of said individual housings 14.
  • the graphene film 8 has a triangular shape corresponding to the arrangement of the individual housings 14. This gives priority to heating the elements placed in said individual housings 14.
  • an aluminum film 22 can be provided above the graphene film 8, to improve its contact surface with the objects positioned in said individual housings 14.
  • the inner wall 1b, the graphene film 8 and the aluminum film 22 can be configured to deform, in particular in the space of the air gap 20, under the effect of the weight of the objects placed on them.
  • the inner wall 1b, the graphene film 8 and the aluminum film 22 can be configured to deform in the form of spherical caps corresponding to the surface of the petanque balls placed on them.
  • Such a deformation makes it possible in particular to increase the contact surface between the objects to be heated and the graphene film 8, which improves the heating performance of the heating means 4.
  • the inner wall 1b, and possibly the graphene film 8 and the aluminum film 22 can have a shape at least partially complementary to that of the objects intended to be placed on them.
  • the inner wall 1b, and possibly the graphene film 8 and the aluminum film 22 can have spherical caps intended to receive the fugtanque boules.
  • the bag according to the invention makes it possible to benefit from balls at room temperature or at higher temperature, in particular in winter, in order to improve the practice of the user.
  • a heating means comprising graphene has proved to be particularly advantageous in terms of the efficiency and yield of the heating, despite a reduced contact surface between the balls and a flat film.
  • the electrical and mechanical properties of graphene, especially in the form of a film, make it possible to effectively heat the balls thanks to direct contact.

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Abstract

L'invention concerne un sac (1) comportant au moins un compartiment (2) définissant un volume intérieur, et un moyen de chauffage (4) destiné à chauffer le volume intérieur du compartiment (2). Le moyen de chauffage (4) comprend du graphène, est destiné à être relié à une alimentation électrique (6), par exemple intégrée au sac (1) ou extérieure au sac, et est configuré pour transformer l'énergie électrique en chaleur.L'invention concerne en particulier un sac pour recevoir et chauffer une ou plusieurs boules de pétanque.The invention relates to a bag (1) comprising at least one compartment (2) defining an interior volume, and a heating means (4) intended to heat the interior volume of the compartment (2). The heating means (4) comprises graphene, is intended to be connected to an electrical power supply (6), for example integrated into the bag (1) or external to the bag, and is configured to transform electrical energy into heat. The invention relates in particular to a bag for receiving and heating one or more pétanque balls.

Description

Domaine TechniqueTechnical area

La présente invention concerne le domaine des sacs de rangement, et plus particulièrement le domaine des sacs de rangement pour accessoires de sport.The present invention relates to the field of storage bags, and more particularly to the field of storage bags for sports accessories.

Technique antérieurePrior technique

Il existe des sacs de rangement et de transport d'accessoires de sport. De tels sacs sont souvent conçus pour offrir des compartiments dont le nombre et la taille sont adaptés au sport visé.There are storage and transport bags for sports accessories. Such bags are often designed to offer compartments whose number and size are adapted to the sport in question.

Cependant, de tels sacs sont destinés exclusivement à être utilisés avant et après la pratique de l'activité sportive, et sont conçus pour faciliter le rangement des accessoires et/ou leur accès à l'intérieur du sac. Ainsi, de tels sacs ne sont pas conçus pour améliorer la pratique du sport, en anticipant ou en proposant des fonctionnalités facilitant la pratique sportive.However, such bags are intended exclusively for use before and after the practice of sporting activity, and are designed to facilitate the storage of accessories and/or access to them inside the bag. Thus, such bags are not designed to improve the practice of sport, by anticipating or by offering functionalities facilitating the practice of sport.

Plus particulièrement, les sacs de l'art antérieur sont conçus de manière décorrélée de la pratique sportive, et ne sont conçus qu'à des fins de transport des accessoires.More particularly, the bags of the prior art are designed in a manner decorrelated from sports practice, and are only designed for the purpose of transporting accessories.

Il existe ainsi un besoin pour avoir un sac, notamment de rangement et/ou transport d'accessoires de sport, permettant d'améliorer l'utilisation des accessoires, et en particulier permettant d'améliorer la pratique de l'activité sportive de l'utilisateur.There is thus a need to have a bag, in particular for storing and/or transporting sports accessories, making it possible to improve the use of the accessories, and in particular making it possible to improve the practice of the sporting activity of the user.

Exposé de l'inventionDisclosure of Invention

La présente invention vise à résoudre les différents problèmes techniques énoncés précédemment. En particulier la présente invention vise à proposer un sac permettant de modifier certaines propriétés, telles que la température, des accessoires de sport, avant ou pendant la pratique sportive. La présente invention vise également à proposer un sac permettant de choisir la température de ses accessoires de sport, notamment de ses boules de pétanque, avant ou lors de la pratique sportive.The present invention aims to solve the various technical problems mentioned above. In particular, the present invention aims to provide a bag making it possible to modify certain properties, such as the temperature, of sports accessories, before or during sports practice. The present invention also aims to provide a bag making it possible to choose the temperature of one's sports accessories, in particular of one's petanque balls, before or during sports practice.

Ainsi, selon un aspect, il est proposé un sac comportant au moins un compartiment définissant un volume intérieur, et un moyen de chauffage destiné à chauffer le volume intérieur du compartiment, dans lequel le moyen de chauffage comprend du graphène, est destiné à être relié à une alimentation électrique, par exemple intégrée au sac ou extérieure au sac, et est configuré pour transformer l'énergie électrique en chaleur.Thus, according to one aspect, a bag is proposed comprising at least one compartment defining an interior volume, and a heating means intended to heat the interior volume of the compartment, in which the heating means comprises graphene, is intended to be connected to an electrical power supply, for example integrated into the bag or external to the bag, and is configured to transform the electrical energy into heat.

Le sac selon la présente invention est donc conçu pour permettre à l'utilisateur de chauffer le contenu du sac, à une température voulue et au moment choisi, afin d'améliorer l'utilisation des objets lorsqu'ils seront sortis du sac. En particulier, le sac selon la présente invention comporte un moyen de chauffage comportant du graphène. Le moyen de chauffage avec du graphène est particulièrement avantageux, grâce à une épaisseur qui peut être réduite tout en présentant des qualités d'émissions thermiques et de résistance mécanique élevées. En particulier, un tel sac est particulièrement avantageux pour y ranger et chauffer des boules, notamment de pétanque.The bag according to the present invention is therefore designed to allow the user to heat the contents of the bag, to a desired temperature and to the time, in order to improve the use of the objects when they are taken out of the bag. In particular, the bag according to the present invention comprises a heating means comprising graphene. The heating means with graphene is particularly advantageous, thanks to a thickness which can be reduced while having high thermal emission and mechanical resistance qualities. In particular, such a bag is particularly advantageous for storing and heating balls, in particular pétanque balls.

Préférentiellement, le moyen de chauffage, et avantageusement le graphène du moyen de chauffage, est monté dans le volume intérieur du compartiment.Preferably, the heating means, and advantageously the graphene of the heating means, is mounted in the internal volume of the compartment.

Le montage du moyen de chauffage directement dans le volume intérieur du compartiment permet d'améliorer les transferts de chaleur entre lui et le contenu du compartiment, notamment par un contact physique direct entre le moyen de chauffage et les objets contenus dans le compartiment. En particulier, il est ainsi possible de chauffer en priorité des objets contenus dans le compartiment, avant de chauffer le compartiment lui-même ou l'air contenu dans le compartiment. L'énergie utilisée pour chauffer est donc mieux gérée, en ciblant principalement les objets contenus dans le compartiment et pouvant être en contact direct avec le moyen de chauffage, plutôt que de devoir chauffer préalablement le compartiment lui-même et son volume intérieur avant de chauffer les objets contenus à l'intérieur.Mounting the heating means directly in the interior volume of the compartment makes it possible to improve the heat transfers between it and the contents of the compartment, in particular by direct physical contact between the heating means and the objects contained in the compartment. In particular, it is thus possible to heat objects contained in the compartment as a priority, before heating the compartment itself or the air contained in the compartment. The energy used to heat is therefore better managed, mainly targeting the objects contained in the compartment and which may be in direct contact with the heating means, rather than having to first heat the compartment itself and its interior volume before heating. the objects contained inside.

Préférentiellement, le moyen de chauffage comprend un film de graphène, de préférence disposé sur une face intérieure du compartiment.Preferably, the heating means comprises a film of graphene, preferably placed on an inner face of the compartment.

Le film de graphène permet d'obtenir des résultats thermiques élevés, grâce à ses propriétés intrinsèques de conductivité électrique. Par ailleurs, le film de graphène permet d'obtenir un moyen de chauffage fin, c'est-à-dire peu encombrant, hydrofuge et résistant mécaniquement, ce qui rend possible son exposition dans le compartiment, pour un contact direct avec les objets contenus dans le compartiment et devant être chauffés.The graphene film allows to obtain high thermal results, thanks to its intrinsic properties of electrical conductivity. In addition, the graphene film makes it possible to obtain a thin heating medium, that is to say space-saving, water-repellent and mechanically resistant, which makes it possible to expose it in the compartment, for direct contact with the objects contained. in the compartment and need to be heated.

Préférentiellement, la face intérieure du compartiment sur laquelle est disposé le film de graphène, et le film de graphène présentent, par exemple localement, une forme au moins partiellement complémentaire à la forme des objets destinés à être placés dans ledit compartiment. Par exemple, dans le cas d'un sac destiné à transporter des boules de pétanque, notamment trois boules de pétanque, la face intérieure du compartiment sur laquelle est disposé le film de graphène, et le film de graphène présentent localement une forme de calotte sphérique, notamment trois calottes sphériques, dont le rayon correspond idéalement à celui des boules de pétanque.Preferably, the inner face of the compartment on which the graphene film is placed, and the graphene film have, for example locally, a shape at least partially complementary to the shape of the objects intended to be placed in said compartment. For example, in the case of a bag intended to transport pétanque boules, in particular three pétanque boules, the inner face of the compartment on which the graphene film is placed, and the graphene film locally have the shape of a spherical cap. , in particular three spherical caps, whose radius ideally corresponds to that of pétanque balls.

La surface de contact entre le film de graphène et les boules contenues dans le sac, est alors sensiblement égale à la surface de la calotte sphérique formée par le film de graphène et la face intérieure du compartiment.The contact surface between the graphene film and the balls contained in the bag is then substantially equal to the surface of the spherical cap formed by the graphene film and the inner face of the compartment.

Préférentiellement, le sac comprend également un moyen de commande configuré pour délivrer l'énergie électrique de l'alimentation électrique au moyen de chauffage comportant du graphène.Preferably, the bag also comprises control means configured to deliver electrical energy from the power supply to the heating means comprising graphene.

L'alimentation électrique du moyen de chauffage est commandable, afin de pouvoir obtenir le chauffage voulu, et la température souhaitée, pour les objets contenus dans le compartiment, tout en maitrisant la consommation électrique.The power supply of the heating means is controllable, in order to be able to obtain the desired heating, and the desired temperature, for the objects contained in the compartment, while controlling the electrical consumption.

Préférentiellement, le sac comprend également un capteur de température monté dans le volume intérieur du compartiment, et le moyen de commande est configuré pour délivrer, ou non, l'énergie électrique de l'alimentation électrique au moyen de chauffage comportant du graphène selon la température du volume intérieur.Preferably, the bag also comprises a temperature sensor mounted in the interior volume of the compartment, and the control means is configured to deliver, or not, the electrical energy of the electrical supply to the heating means comprising graphene according to the temperature of the interior volume.

Le capteur de température permet de mieux contrôler l'alimentation électrique du moyen de chauffage, en permettant de déterminer si celle-ci doit être augmentée, diminuée voire arrêtée selon une température cible déterminée.The temperature sensor makes it possible to better control the electric power supply of the heating means, by making it possible to determine whether the latter must be increased, reduced or even stopped according to a determined target temperature.

Préférentiellement, le moyen de commande est configuré pour chauffer à différentes températures le volume intérieur du compartiment.Preferably, the control means is configured to heat the interior volume of the compartment to different temperatures.

Grâce au capteur de température, il est également possible de prévoir ou de choisir différentes températures de chauffage des objets contenus dans le compartiment. En particulier, il devient possible d'adapter la température de chauffe en fonction de la température initiale des objets, ou de la température extérieure par exemple.Thanks to the temperature sensor, it is also possible to provide or choose different heating temperatures of the objects contained in the compartment. In particular, it becomes possible to adapt the heating temperature as a function of the initial temperature of the objects, or of the outside temperature for example.

Préférentiellement, le moyen de commande peut comprendre un ou plusieurs boutons montés sur le sac configurés pour choisir une température de chauffage, ou, au contraire, comprendre un moyen de communication, par exemple Bluetooth ou Wifi, vers un appareil externe, par exemple un téléphone, configuré pour choisir et communiquer une température de chauffage.Preferably, the control means may comprise one or more buttons mounted on the bag configured to choose a heating temperature, or, on the contrary, comprise a means of communication, for example Bluetooth or Wifi, to an external device, for example a telephone , configured to choose and communicate a heating temperature.

Préférentiellement, le sac comprend également un moyen d'isolation thermique, par exemple un film réflecteur de chaleur, monté entre l'extérieur d'une part, et le volume intérieur et le moyen de chauffage d'autre part, de préférence monté sur ou dans au moins une face intérieure du compartiment, de préférence monté sur ou dans chacune des faces intérieures du compartiment.Preferably, the bag also comprises a thermal insulation means, for example a heat-reflecting film, mounted between the exterior on the one hand, and the interior volume and the heating means on the other hand, preferably mounted on or in at least one interior face of the compartment, preferably mounted on or in each of the interior faces of the compartment.

Le moyen d'isolation thermique permet de réduire les pertes thermiques entre l'intérieur du compartiment et l'extérieur. On limite ainsi la consommation énergétique du sac, tout en ayant la température souhaitée pour les objets stockés dans le compartiment. En particulier, un film réflecteur de chaleur permet notamment d'améliorer les propriétés d'isolation thermique du sac, tout en conservant une épaisseur réduite, et donc un encombrement et un poids limité du sac.The thermal insulation means makes it possible to reduce thermal losses between the interior of the compartment and the exterior. This limits the energy consumption of the bag, while having the desired temperature for the objects stored in the compartment. In particular, a heat-reflecting film allows in particular to improve the thermal insulation properties of the bag, while maintaining a reduced thickness, and therefore a size and a limited weight of the bag.

Préférentiellement, la face intérieure du compartiment sur laquelle est disposé le film de graphène, et le film de graphène présentent localement une forme d'au moins une calotte sphérique.Preferably, the inner face of the compartment on which the graphene film is placed, and the graphene film locally have the shape of at least one spherical cap.

Préférentiellement, le sac comprend également une lame d'air d'isolation thermique montée entre l'extérieur d'une part, et le volume intérieur et le moyen de chauffage d'autre part, par exemple entre l'extérieur et une face intérieure du compartiment, de préférence montée entre l'extérieur et ladite face intérieure du compartiment sur laquelle est disposé le film de graphène.Preferably, the bag also comprises a thermal insulation air gap mounted between the exterior on the one hand, and the interior volume and the heating means on the other hand, for example between the exterior and an interior face of the compartment, preferably mounted between the exterior and said interior face of the compartment on which the graphene film is placed.

La lame d'air permet de créer une barrière thermique entre l'extérieur et le moyen de chauffage, limitant encore plus les pertes thermiques du sac pendant son utilisation.The air gap creates a thermal barrier between the outside and the heating means, further limiting heat loss from the bag during use.

Préférentiellement, le sac est configuré pour permettre une déformation locale de la face intérieure du compartiment sur laquelle est disposé le film de graphène, et du film de graphène, au niveau de la lame d'air d'isolation thermique.Preferably, the bag is configured to allow local deformation of the inner face of the compartment on which the graphene film is placed, and of the graphene film, at the level of the thermal insulation air gap.

Plus précisément, la lame d'air prévue entre la face intérieure du compartiment et l'extérieur permet une déformation locale de ladite face intérieure et du film de graphène, notamment sous l'effet du poids des objets disposés dans ledit compartiment. Une telle déformation permet notamment d'augmenter la surface de contact entre le film de graphène et les objets disposés dans ledit compartiment, et donc d'améliorer le transfert de chaleur vers lesdits objets.More specifically, the air gap provided between the inner face of the compartment and the outside allows local deformation of said inner face and of the graphene film, in particular under the effect of the weight of the objects placed in said compartment. Such a deformation makes it possible in particular to increase the contact surface between the graphene film and the objects placed in said compartment, and therefore to improve the transfer of heat to said objects.

Par exemple, le sac peut comprendre un double-fond formé par une paroi extérieure et une paroi intérieure sur laquelle est disposé le film de graphène, qui délimitent la lame d'air, et la paroi intérieure peut être configurée pour se déformer localement, sous l'effet du poids des objets positionnés dans le compartiment intérieur du sac.For example, the bag can comprise a double bottom formed by an outer wall and an inner wall on which the graphene film is placed, which delimit the air gap, and the inner wall can be configured to deform locally, under the effect of the weight of the objects positioned in the interior compartment of the bag.

Préférentiellement, le sac comprend également un moyen de réception monté dans le volume intérieur, le moyen de réception comportant au moins un logement individuel, de préférence trois, configuré pour recevoir un objet à chauffer, par exemple une boule de pétanque, et éventuellement un logement pour recevoir une alimentation électrique.Preferably, the bag also comprises a receiving means mounted in the interior volume, the receiving means comprising at least one individual housing, preferably three, configured to receive an object to be heated, for example a pétanque ball, and optionally a housing to receive power.

Le moyen de réception permet de définir des emplacements, ou logements, de rangements déterminés. Le moyen de réception permet notamment de maintenir en position le ou les objets en position à l'intérieur du compartiment. Il devient alors possible de maintenir les positions relatives desdits objets et du moyen de chauffage, par exemple le contact physique entre lesdits objets et le moyen de chauffage. Un tel contact est avantageux dans le cas où les objets à chauffer sont des boules, notamment en métal ou en alliage métallique, telles que des boules de pétanque. En effet, le moyen de chauffage avec graphène permet d'obtenir un chauffage efficace de la ou des boules, malgré une surface de contact réduite. Plus précisément, il est a été observé que le moyen de chauffage avec graphène permettait de chauffer directement la ou les boules, et non par l'intermédiaire de l'air contenu dans le compartiment. Le chauffage de la ou des boules s'effectue alors plus en profondeur, permettant d'avoir un confort d'utilisation plus long lorsque l'utilisateur la ou les sort du sac.The receiving means makes it possible to define locations, or housings, of determined storage spaces. The receiving means makes it possible in particular to hold the object or objects in position inside the compartment. He then becomes possible to maintain the relative positions of said objects and of the heating means, for example physical contact between said objects and the heating means. Such contact is advantageous in the case where the objects to be heated are balls, in particular made of metal or a metal alloy, such as petanque balls. Indeed, the heating means with graphene makes it possible to obtain effective heating of the ball or balls, despite a reduced contact surface. More specifically, it has been observed that the heating means with graphene made it possible to heat the ball or balls directly, and not via the air contained in the compartment. The heating of the ball(s) then takes place more deeply, making it possible to have longer comfort of use when the user takes it or them out of the bag.

Préférentiellement, ledit au moins un moyen de réception est configuré pour permettre un contact entre l'objet à chauffer positionné dans le logement individuel, et le moyen de chauffage, de préférence le graphène du moyen de chauffage, par exemple dans lequel le moyen de réception comprend une ouverture traversante entre le logement individuel et le moyen de chauffage, de préférence le graphène du moyen de chauffage.Preferably, said at least one receiving means is configured to allow contact between the object to be heated positioned in the individual housing, and the heating means, preferably the graphene of the heating means, for example in which the receiving means includes a through opening between the individual housing and the heating means, preferably the graphene of the heating means.

Le logement individuel peut ainsi présenter la forme d'un cylindre traversant dont la section correspondant à celle de la boule à y placer. Le fond du logement individuel ouvre directement sur le moyen de chauffage, et notamment sur le graphène du moyen de chauffage, afin de permettre le contact direct entre lui et la boule à chauffer, tout en permettant une tenue en position de la boule dans le compartiment.The individual housing can thus have the shape of a through cylinder whose section corresponds to that of the ball to be placed there. The bottom of the individual housing opens directly onto the heating means, and in particular onto the graphene of the heating means, in order to allow direct contact between it and the ball to be heated, while allowing the ball to be held in position in the compartment .

Préférentiellement, dans le cas d'un sac destiné à transporter des boules de pétanque, notamment trois boules de pétanque, la face intérieure du compartiment sur laquelle est disposé le film de graphène, et le film de graphène présentent localement une forme de calotte sphérique, notamment trois calottes sphériques, dont le rayon correspond idéalement à celui des boules de pétanque, chaque calotte sphérique étant positionnée en regard d'un logement individuel dudit moyen de réception.Preferably, in the case of a bag intended to transport petanque balls, in particular three petanque balls, the inner face of the compartment on which the graphene film is placed, and the graphene film locally have the shape of a spherical cap, in particular three spherical caps, the radius of which ideally corresponds to that of pétanque balls, each spherical cap being positioned opposite an individual housing of said receiving means.

Préférentiellement, le moyen de réception comprend une mousse à cellules fermées, par exemple en EVA ou polyéthylène.Preferably, the receiving means comprises a closed-cell foam, for example made of EVA or polyethylene.

L'utilisation de la mousse à cellules fermées permet d'améliorer les performances thermiques du sac, en permettant un chauffage des objets placés à l'intérieur du sac, plutôt que du moyen de réception. On concentre ainsi la chaleur produite par le moyen de chauffage sur les objets à réchauffer, plutôt que leur environnement, ce qui améliore le rendement énergétique du sac.The use of closed-cell foam makes it possible to improve the thermal performance of the bag, by allowing heating of the objects placed inside the bag, rather than of the receiving means. The heat produced by the heating means is thus concentrated on the objects to be heated, rather than their environment, which improves the energy efficiency of the bag.

Brève description des dessinsBrief description of the drawings

  • [Fig. 1] La figure 1 représente une vue de côté, d'un sac selon un premier mode de réalisation de l'invention, à l'état fermé ;[ Fig. 1 ] There figure 1 shows a side view of a bag according to a first embodiment of the invention, in the closed state;
  • [Fig. 2] La figure 2 représente une vue de dessus, du sac illustré à la figure 1, à l'état ouvert et sans le moyen de réception ;[ Fig. 2 ] There picture 2 represents a top view, of the bag illustrated in the figure 1 , in the open state and without the receiving means;
  • [Fig. 3] La figure 3 représente une vue de dessus du sac illustré à la figure 1, à l'état ouvert, avec le moyen de réception et des objets rangés à l'intérieur ;[ Fig. 3 ] There picture 3 shows a top view of the bag shown in figure 1 , in the open state, with the receiving means and objects stored inside;
  • [Fig. 4] La figure 4 représente une vue de côté, d'un sac selon un deuxième mode de réalisation de l'invention, à l'état fermé ;[ Fig. 4 ] There figure 4 shows a side view of a bag according to a second embodiment of the invention, in the closed state;
  • [Fig. 5] La figure 5 représente une vue éclatée du sac illustré à la figure 5, à l'état ouvert et sans le moyen de réception ; et[ Fig. 5 ] There figure 5 shows an exploded view of the bag shown in figure 5 , in the open state and without the receiving means; And
  • [Fig. 6] La figure 6 représente une vue de dessus du sac illustré à la figure 4, à l'état ouvert, avec le moyen de réception à l'intérieur.[ Fig. 6 ] There figure 6 shows a top view of the bag shown in figure 4 , in the open state, with the receiving means inside.
Description des modes de réalisationDescription of embodiments

Les figures 1 à 3 représentent différentes vues, à l'état fermé et ouvert, d'un sac 1 selon un premier mode de réalisation de la présente invention.THE figures 1 to 3 show different views, in the closed and open state, of a bag 1 according to a first embodiment of the present invention.

Le sac 1 décrit ci-dessous et illustré sur les figures 1 à 3 est en particulier destiné au rangement et transport de boules de pétanque, mais peut être destiné à d'autres usages, notamment au rangement et transport d'autres accessoires de sport, notamment d'extérieur.Bag 1 described below and illustrated on the figures 1 to 3 is in particular intended for the storage and transport of pétanque boules, but may be intended for other uses, in particular for the storage and transport of other sports accessories, in particular outdoor ones.

Le sac 1 a notamment pour but de permettre d'avoir ses accessoires de sport, notamment ses boules de pétanque, à la température voulue, en particulier lorsque la température extérieure est faible. Le sac 1 rend ainsi la pratique sportive, par exemple de la pétanque, plus agréable et pour une durée prolongée.The purpose of the bag 1 is in particular to make it possible to have its sports accessories, in particular its pétanque balls, at the desired temperature, in particular when the outside temperature is low. The bag 1 thus makes sports practice, for example pétanque, more pleasant and for an extended period.

A cet effet, le sac 1 comprend un compartiment 2 délimitant un volume intérieur, dans lequel les accessoires sont destinés à être rangés. Le sac 1 comporte également un moyen de chauffage 4 utilisé pour chauffer les accessoires présents dans le compartiment 2 et fonctionnant de préférence à partir d'une alimentation électrique 6, telle qu'une batterie.To this end, the bag 1 comprises a compartment 2 delimiting an interior volume, in which the accessories are intended to be stored. The bag 1 also comprises a heating means 4 used to heat the accessories present in the compartment 2 and operating preferably from an electrical power supply 6, such as a battery.

Le moyen de chauffage 4 comprend avantageusement du graphène, et plus spécifiquement un film de graphène 8. Le film de graphène présente des propriétés de conductivité électrique avantageuses pour un usage comme émetteur thermique. De plus, le film de graphène 8 est hydrofuge et permet une homogénéité de chauffage sur toute sa surface.The heating means 4 advantageously comprises graphene, and more specifically a graphene film 8. The graphene film has advantageous electrical conductivity properties for use as a heat emitter. In addition, the graphene film 8 is water-repellent and allows uniform heating over its entire surface.

Le film de graphène 8 permet notamment d'être directement intégré dans le compartiment 2 du sac 1, en nécessitant peu de place et en étant robuste mécaniquement. Ainsi, le film de graphène 8 peut être disposé sur une face intérieure 2a du compartiment 2, de manière à ce que les boules viennent directement en contact avec lui lorsqu'elles sont rangées dans le sac 1. Malgré la faible surface de contact entre le film de graphène 8 et les boules de pétanque, ces dernières sont de manière avantageuse chauffées rapidement et efficacement, sans pour autant venir altérer l'intégrité physique du film de graphène 8 sur lequel elles reposent.The graphene film 8 in particular makes it possible to be directly integrated into the compartment 2 of the bag 1, requiring little space and being mechanically robust. Thus, the graphene film 8 can be arranged on one side interior 2a of compartment 2, so that the boules come directly into contact with it when they are stored in the bag 1. Despite the small contact surface between the graphene film 8 and the pétanque boules, the latter are advantageously heated quickly and efficiently, without however altering the physical integrity of the graphene film 8 on which they rest.

Avantageusement, le film de graphène 8 présente une superficie similaire ou du même ordre de grandeur que la face interne 2a sur laquelle il est disposé. Compte tenu de sa faible épaisseur, le film de graphène 8 peut être envisagé avec une superficie relativement étendue, afin de fournir un chauffage réparti de manière homogène dans le compartiment 2 du sac 1. Alternativement, le film de graphène 8 peut être prévu avec une taille réduite, et positionné de manière localisé au niveau des emplacements où seront positionnées les boules à réchauffer.Advantageously, the graphene film 8 has a surface area similar or of the same order of magnitude as the internal face 2a on which it is placed. Given its low thickness, the graphene film 8 can be envisaged with a relatively large surface area, in order to provide heating distributed in a homogeneous manner in the compartment 2 of the bag 1. Alternatively, the graphene film 8 can be provided with a reduced size, and positioned in a localized manner at the level of the locations where the balls to be heated will be positioned.

Le film de graphène 8 est donc relié à l'alimentation électrique 6 pour pouvoir chauffer. L'alimentation électrique 6 peut être intégrée au sac 1, par exemple une batterie telle que représentée sur les figures, ou bien peut être une alimentation externe. Ainsi, en cas d'alimentation externe, le sac 1 peut comprendre un câble pour permettre un branchement sur une prise, par exemple 12V ou USB d'un véhicule, ou bien sur une batterie externe telle que celles existant pour la recharge de produits électroniques nomades comme les smartphones.The graphene film 8 is therefore connected to the power supply 6 in order to be able to heat up. The power supply 6 can be integrated into the bag 1, for example a battery as shown in the figures, or it can be an external power supply. Thus, in the event of an external power supply, the bag 1 can include a cable to allow connection to a socket, for example 12V or USB of a vehicle, or else to an external battery such as those existing for recharging electronic products. nomads like smartphones.

Afin d'améliorer les performances thermiques du sac 1, le compartiment 2 est également isolé thermiquement de l'extérieur. A cet effet, le compartiment 2 peut comprendre, sur ses faces intérieures 2a, un film réflecteur de chaleur, tel qu'un film argenté, permettant de diminuer les pertes thermiques vers l'extérieur lorsque le sac 1 est fermé. De même, le sac 1 peut comporter un moyen de fermeture, notamment une fermeture à glissière, spécifique limitant la circulation d'air, et donc les échanges thermiques, entre l'intérieur et l'extérieur du sac 1.In order to improve the thermal performance of bag 1, compartment 2 is also thermally insulated from the outside. To this end, the compartment 2 may comprise, on its inner faces 2a, a heat-reflecting film, such as a silver film, making it possible to reduce heat losses to the outside when the bag 1 is closed. Similarly, the bag 1 may include a means of closure, in particular a zipper, specific limiting the circulation of air, and therefore the heat exchanges, between the inside and the outside of the bag 1.

Enfin, le sac 1 peut également être formé dans un matériau isolant thermiquement ou comprendre, dans son épaisseur, une couche isolante thermiquement. En effet, le moyen de chauffe 4 étant disposé sur la face intérieure 2a du compartiment, l'efficacité de celui-ci n'est pas impacté par la présence d'une couche isolante au sein même du matériau formant le sac 1.Finally, the bag 1 can also be formed from a thermally insulating material or include, in its thickness, a thermally insulating layer. Indeed, the heating means 4 being arranged on the inner face 2a of the compartment, the effectiveness of the latter is not impacted by the presence of an insulating layer within the material forming the bag 1.

Afin de contrôler la mise en œuvre du moyen de chauffage 4, le sac 1 comprend un moyen de commande 10. Le moyen de commande 10 permet d'alimenter le moyen de chauffage 4 lorsqu'on souhaite chauffer le contenu du sac 1. Il permet notamment de limiter la consommation électrique du moyen de chauffage 4 en activant et désactivant celui-ci uniquement pendant les périodes voulues par l'utilisateur.In order to control the implementation of the heating means 4, the bag 1 comprises a control means 10. The control means 10 makes it possible to supply the heating means 4 when it is desired to heat the contents of the bag 1. It allows in particular to limit the electrical consumption of the means of heating 4 by activating and deactivating it only during the periods desired by the user.

Le moyen de commande 10 peut comprendre un bouton de type ON/OFF, pour allumer et éteindre le moyen de chauffe 4. Alternativement, le moyen de commande 10 peut comprendre différentes positions, correspondant par exemple à différentes durées de chauffe ou différentes températures de chauffe. Par appui successif par exemple, l'utilisateur peut alors sélectionner la durée ou la température voulue. Le moyen de commande 10 est de préférence monté à l'extérieur du compartiment 2, par exemple sur la surface extérieure du sac 1, de manière à permettre à l'utilisateur de le commander sans avoir à ouvrir le compartiment 2.The control means 10 can comprise an ON/OFF type button, to turn the heating means 4 on and off. Alternatively, the control means 10 can comprise different positions, corresponding for example to different heating times or different heating temperatures. . By successive pressing for example, the user can then select the desired duration or temperature. The control means 10 is preferably mounted outside the compartment 2, for example on the outer surface of the bag 1, so as to allow the user to control it without having to open the compartment 2.

Le sac 1 peut notamment comprendre un capteur de température (non représenté) configuré pour déterminer la température du moyen de chauffe 4 ou de l'intérieur du compartiment 2. Le capteur de température peut avantageusement être relié au moyen de commande 10, afin de réguler l'alimentation électrique du moyen de chauffe 4 en fonction de la température intérieure ou du moyen de chauffe 4, et de la consigne de l'utilisateur.The bag 1 can in particular comprise a temperature sensor (not shown) configured to determine the temperature of the heating means 4 or of the interior of the compartment 2. The temperature sensor can advantageously be connected to the control means 10, in order to regulate the power supply of the heating means 4 according to the interior temperature or the heating means 4, and the user's instruction.

Par exemple, le moyen de commande 10 peut comporter un bouton à appui successif, de préférence avec un indicateur lumineux, pour commander le moyen de chauffe 4. Un premier appui sur le bouton de commande permet de déclencher le moyen de chauffe 4, avec une température de consigne élevée, par exemple 60°C, permettant une montée en température rapide des boules. Le bouton de commande peut alors s'allumer en rouge.For example, the control means 10 may comprise a successively pressed button, preferably with a luminous indicator, to control the heating means 4. A first press on the control button makes it possible to trigger the heating means 4, with a high set temperature, for example 60° C., allowing a rapid rise in temperature of the balls. The control button may then light up red.

Un deuxième appui sur le bouton de commande permet de diminuer la température de commande, par exemple à une température de 45°C, afin de limiter la consommation électrique du sac 1 tout en continuant de chauffer les boules. Le bouton peut alors s'allumer en bleu.A second press on the control button makes it possible to reduce the control temperature, for example to a temperature of 45° C., in order to limit the electrical consumption of the bag 1 while continuing to heat the balls. The button may then light up blue.

Enfin, un troisième appui sur le bouton de commande permet de diminuer encore la température de commande, par exemple à une température de 30°C, afin de maintenir à température les boules, éventuellement pendant une durée prolongée. Le bouton peut alors s'allumer en vert.Finally, a third press on the control button makes it possible to further reduce the control temperature, for example to a temperature of 30° C., in order to maintain the balls at temperature, possibly for an extended period. The button may then light up green.

Selon un autre mode de réalisation, au lieu de comprendre un ou plusieurs boutons, le moyen de commande peut comprendre un moyen de communication, par exemple Bluetooth ou Wifi, vers un appareil externe, par exemple un téléphone, configuré pour sélectionner et communiquer une température de chauffage. Par exemple, le moyen de commande peut comprendre un moyen de communication avec un appareil électronique nomade, par exemple un smartphone, afin de permettre à l'utilisateur de déterminer la température de chauffage, et éventuellement de visualiser la température du compartiment en temps réel. Dans ce cas, la gestion et la régulation de l'alimentation du moyen de chauffage 4 peuvent se faire directement sur l'appareil nomade, par exemple via un écran tactile, ce qui facilite l'usage qui en est fait par l'utilisateur.According to another embodiment, instead of comprising one or more buttons, the control means may comprise a means of communication, for example Bluetooth or Wifi, to an external device, for example a telephone, configured to select and communicate a temperature of heating. For example, the control means may comprise a means of communication with a mobile electronic device, for example a smartphone, in order to allow the user to determine the temperature of heating, and possibly to view the temperature of the compartment in real time. In this case, the management and regulation of the power supply to the heating means 4 can be done directly on the mobile device, for example via a touch screen, which facilitates the use made of it by the user.

Le moyen de commande 10, avec éventuellement le capteur de température, permet alors de limiter la consommation électrique du sac 1, tout en permettant un chauffage rapide et efficace des boules.The control means 10, possibly with the temperature sensor, then makes it possible to limit the electrical consumption of the bag 1, while allowing rapid and efficient heating of the balls.

Pour permettre la tenue des accessoires dans le sac 1, un moyen de réception 12 est prévu, par exemple sous forme d'une mousse présentant des logements individuels. La mousse peut être choisie à cellules fermées, et en EVA ou en polyéthylène, afin de limiter son inertie thermique et permettre de concentrer la chaleur sur le contenu et non sur le contenant.To allow the holding of the accessories in the bag 1, a receiving means 12 is provided, for example in the form of a foam having individual housings. The foam can be chosen with closed cells, and in EVA or polyethylene, in order to limit its thermal inertia and allow the heat to be concentrated on the contents and not on the container.

Les logements individuels peuvent être des logements individuels 14 destinés aux boules de pétanque : de tels logements individuels 14 sont avantageusement traversant au niveau du film de graphène 8 de manière à permettre un contact direct entre les boules et le film de graphène 8 : la transmission de chaleur peut alors s'effectuer par conduction et par rayonnement.The individual housings can be individual housings 14 intended for pétanque balls: such individual housings 14 are advantageously crossing at the level of the graphene film 8 so as to allow direct contact between the balls and the graphene film 8: the transmission of heat can then be carried out by conduction and by radiation.

D'autres logements peuvent être prévus, par exemple un logement 16 pour l'alimentation électrique 6, notamment si celle-ci doit pouvoir être facilement retirée pour être rechargée ou remplacée, ainsi que des logements 18 pour d'autres accessoires tels que des cochonnets.Other housings may be provided, for example a housing 16 for the power supply 6, in particular if the latter must be able to be easily removed to be recharged or replaced, as well as housings 18 for other accessories such as jacks .

Les figures 4 à 6 représentent différentes vues, à l'état fermé et ouvert, d'un sac 1' selon un deuxième mode de réalisation de la présente invention.THE figures 4 to 6 show different views, in the closed and open state, of a bag 1' according to a second embodiment of the present invention.

Dans la suite de la description, les éléments identiques à ceux décrits précédemment sont désignés par les mêmes références.In the remainder of the description, elements identical to those described previously are designated by the same references.

Dans le deuxième mode de réalisation, le sac 1' comprend une lame d'air 20 disposée entre le moyen de chauffage 4 et l'extérieur. La lame d'air 20 a pour but d'améliorer l'isolation thermique du sac 1', entre le moyen de chauffage 4 et l'extérieur.In the second embodiment, the bag 1' includes an air gap 20 placed between the heating means 4 and the outside. The purpose of the air gap 20 is to improve the thermal insulation of the bag 1', between the heating means 4 and the outside.

Par exemple, le sac 1' peut comprendre un double-fond formé par une paroi extérieure la et une paroi intérieure 1b qui délimitent la lame d'air 20, par exemple d'1cm d'épaisseur. Le moyen de chauffage 4, et plus particulièrement le film de graphène 8, est alors monté sur la face intérieure de la paroi intérieure 1b qui constitue aussi la face intérieure 2a du compartiment 2. Le film de graphène 8 se retrouve alors séparé de l'extérieur par la paroi intérieure 1b, la lame d'air 20 et la paroi extérieure 1a, ce qui réduit les pertes thermiques vers l'extérieur du sac 1'.For example, the bag 1' can comprise a double bottom formed by an outer wall 1a and an inner wall 1b which delimit the air gap 20, for example 1 cm thick. The heating means 4, and more particularly the graphene film 8, is then mounted on the inner face of the inner wall 1b which also constitutes the inner face 2a of the compartment 2. The graphene film 8 is then separated from the outside by the inner wall 1b, the air gap 20 and the outer wall 1a, which reduces heat losses to the outside of the bag 1 '.

Afin d'optimiser le chauffage des objets placés dans les logements individuels 14, le film de graphène 8 peut présenter une forme correspondant à celles desdits logements individuels 14. Par exemple, dans le cas illustré sur les figures 5 et 6, le film de graphène 8 présente une forme triangulaire correspondant à la disposition des logements individuels 14. On vient ainsi chauffer en priorité les éléments placés dans lesdits logements individuels 14.In order to optimize the heating of the objects placed in the individual housings 14, the graphene film 8 can have a shape corresponding to those of said individual housings 14. For example, in the case illustrated in the figure 5 And 6 , the graphene film 8 has a triangular shape corresponding to the arrangement of the individual housings 14. This gives priority to heating the elements placed in said individual housings 14.

Enfin, un film d'aluminium 22 peut être prévu au-dessus du film de graphène 8, pour en améliorer la surface de contact avec les objets positionnés dans lesdits logements individuels 14.Finally, an aluminum film 22 can be provided above the graphene film 8, to improve its contact surface with the objects positioned in said individual housings 14.

La paroi intérieure 1b, le film de graphène 8 et le film d'aluminium 22 peuvent être configurés pour se déformer, notamment dans l'espace de la lame d'air 20, sous l'effet du poids des objets posés sur eux. Ainsi, dans le cas de boules de pétanque, la paroi intérieure 1b, le film de graphène 8 et le film d'aluminium 22 peuvent être configurés pour se déformer sous forme de calottes sphériques correspondant à la surface des boules de pétanque posées sur eux. Une telle déformation permet notamment d'augmenter la surface de contact entre les objets à chauffer et le film de graphène 8, ce qui améliore les performances de chauffe du moyen de chauffage 4.The inner wall 1b, the graphene film 8 and the aluminum film 22 can be configured to deform, in particular in the space of the air gap 20, under the effect of the weight of the objects placed on them. Thus, in the case of petanque balls, the inner wall 1b, the graphene film 8 and the aluminum film 22 can be configured to deform in the form of spherical caps corresponding to the surface of the petanque balls placed on them. Such a deformation makes it possible in particular to increase the contact surface between the objects to be heated and the graphene film 8, which improves the heating performance of the heating means 4.

Alternativement, la paroi intérieure 1b, et éventuellement le film de graphène 8 et le film d'aluminium 22 peuvent présenter une forme au moins partiellement complémentaire à celle des objets destinés à être posés sur eux. Par exemple, la paroi intérieure 1b, et éventuellement le film de graphène 8 et le film d'aluminium 22 peuvent présenter des calottes sphériques destinées à recevoir les boules de pétanque.Alternatively, the inner wall 1b, and possibly the graphene film 8 and the aluminum film 22 can have a shape at least partially complementary to that of the objects intended to be placed on them. For example, the inner wall 1b, and possibly the graphene film 8 and the aluminum film 22 can have spherical caps intended to receive the pétanque boules.

Ainsi, grâce au sac selon l'invention, il devient possible de réchauffer des accessoires avant ou pendant une pratique sportive, telle que la pétanque. Le sac selon la présente invention permet de bénéficier de boules à température ambiante ou à température plus élevée, notamment en hiver, afin d'améliorer la pratique de l'utilisateur. En particulier, l'utilisation d'un moyen de chauffage comportant du graphène s'est révélée particulièrement avantageuse sur l'efficacité et le rendement du chauffage, malgré une surface de contact réduite entre les boules et un film plat. Les propriétés électriques et mécaniques du graphène, notamment sous forme de film, permettent en effet de chauffer efficacement les boules grâce à un contact direct.Thus, thanks to the bag according to the invention, it becomes possible to heat up accessories before or during sports, such as pétanque. The bag according to the present invention makes it possible to benefit from balls at room temperature or at higher temperature, in particular in winter, in order to improve the practice of the user. In particular, the use of a heating means comprising graphene has proved to be particularly advantageous in terms of the efficiency and yield of the heating, despite a reduced contact surface between the balls and a flat film. The electrical and mechanical properties of graphene, especially in the form of a film, make it possible to effectively heat the balls thanks to direct contact.

Claims (14)

Sac (1, 1') comportant au moins un compartiment (2) définissant un volume intérieur, et un moyen de chauffage (4) destiné à chauffer le volume intérieur du compartiment (2), caractérisé en ce que le moyen de chauffage (4) comprend du graphène, est destiné à être relié à une alimentation électrique (6), par exemple intégrée au sac ou extérieure au sac, et est configuré pour transformer l'énergie électrique en chaleur.Bag (1, 1') comprising at least one compartment (2) defining an interior volume, and heating means (4) intended to heat the interior volume of the compartment (2), characterized in that the heating means (4 ) comprises graphene, is intended to be connected to an electrical power supply (6), for example integrated into the bag or external to the bag, and is configured to transform electrical energy into heat. Sac (1, 1') selon la revendication 1, dans lequel le moyen de chauffage (4), et préférentiellement le graphène du moyen de chauffage (4), est monté dans le volume intérieur du compartiment (2).Bag (1, 1') according to claim 1, in which the heating means (4), and preferably the graphene of the heating means (4), is mounted in the internal volume of the compartment (2). Sac (1, 1') selon la revendication 1 ou 2, dans lequel le moyen de chauffage (4) comprend un film de graphène (8), de préférence disposé sur une face intérieure du compartiment (2).Bag (1, 1') according to Claim 1 or 2 , in which the heating means (4) comprises a film of graphene (8), preferably placed on an internal face of the compartment (2). Sac (1, 1') selon l'une des revendications précédentes, comprenant également un moyen de commande (10) configuré pour délivrer l'énergie électrique de l'alimentation électrique (6) au moyen de chauffage (4) comportant du graphène.Bag (1, 1') according to one of the preceding claims, further comprising control means (10) configured to deliver electrical energy from the power supply (6) to the heating means (4) comprising graphene. Sac (1, 1') selon la revendication précédente, comprenant également un capteur de température monté dans le volume intérieur du compartiment (2), et dans lequel le moyen de commande (10) est configuré pour délivrer, ou non, l'énergie électrique de l'alimentation électrique (6) au moyen de chauffage (4) comportant du graphène selon la température du volume intérieur.Bag (1, 1') according to the preceding claim, also comprising a temperature sensor mounted in the internal volume of the compartment (2), and in which the control means (10) is configured to deliver, or not, the energy electricity of the power supply (6) to the heating means (4) comprising graphene according to the temperature of the interior volume. Sac (1, 1') selon les revendications 4 ou 5, dans lequel le moyen de commande (10) est configuré pour chauffer à différentes températures le volume intérieur du compartiment (2).Bag (1, 1') according to Claims 4 or 5 , in which the control means (10) is configured to heat the interior volume of the compartment (2) to different temperatures. Sac (1, 1') selon l'une quelconque des revendications précédentes, comprenant également un moyen d'isolation thermique, par exemple un film réflecteur de chaleur, monté entre l'extérieur d'une part, et le volume intérieur et le moyen de chauffage (4) d'autre part, de préférence monté sur ou dans au moins une face intérieure (2a) du compartiment (2), de préférence monté sur ou dans chacune des faces intérieures du compartiment (2).Bag (1, 1') according to any one of the preceding claims, also comprising a means of thermal insulation, for example a heat-reflecting film, mounted between the exterior on the one hand, and the interior volume and the means heating (4) on the other hand, preferably mounted on or in at least one inner face (2a) of the compartment (2), preferably mounted on or in each of the interior faces of the compartment (2). Sac (1, 1') selon l'une quelconque des revendications précédentes, dans lequel la face intérieure du compartiment sur laquelle est disposé le film de graphène, et le film de graphène présentent localement une forme d'au moins une calotte sphérique.Bag (1, 1') according to any one of the preceding claims, in which the inner face of the compartment on which the graphene film is placed, and the graphene film locally have the shape of at least one spherical cap. Sac (1') selon l'une quelconque des revendications précédentes, comprenant également une lame d'air (20) d'isolation thermique montée entre l'extérieur d'une part, et le volume intérieur et le moyen de chauffage (4) d'autre part, par exemple entre l'extérieur et une face intérieure (2a) du compartiment (2).Bag (1') according to any one of the preceding claims, also comprising a thermal insulation air gap (20) mounted between the exterior on the one hand, and the interior volume and the heating means (4) on the other hand, for example between the exterior and an interior face (2a) of the compartment (2). Sac (1') selon la revendication précédente, comprenant un double-fond formé par une paroi extérieure (1a) et une paroi intérieure (1b) sur laquelle est disposé le film de graphène (8), le double-fond délimitant la lame d'air (20).Bag (1') according to the preceding claim, comprising a double bottom formed by an outer wall (1a) and an inner wall (1b) on which the graphene film (8) is placed, the double bottom delimiting the blade of air (20). Sac (1') selon la revendication précédente, dans lequel la paroi intérieure (1b) est configurée pour se déformer localement, sous l'effet du poids des objets positionnés dans le compartiment intérieur du sac (1').Bag (1') according to the preceding claim, in which the interior wall (1b) is configured to deform locally, under the effect of the weight of the objects positioned in the interior compartment of the bag (1'). Sac (1, 1') selon l'une quelconque des revendications précédentes, comprenant également un moyen de réception (12) monté dans le volume intérieur, le moyen de réception (12) comportant au moins un logement individuel (14), de préférence trois, configuré pour recevoir un objet à chauffer, par exemple une boule de pétanque, et éventuellement un logement (16) pour recevoir une alimentation électrique (6).Bag (1, 1') according to any one of the preceding claims, also comprising receiving means (12) mounted in the interior volume, the receiving means (12) comprising at least one individual housing (14), preferably three, configured to receive an object to be heated, for example a petanque ball, and possibly a housing (16) to receive a power supply (6). Sac (1, 1') selon la revendication précédente, dans lequel ledit au moins un moyen de réception (12) est configuré pour permettre un contact entre l'objet à chauffer positionné dans le logement individuel (14), et le moyen de chauffage (4), de préférence le graphène du moyen de chauffage, par exemple dans lequel le moyen de réception (12) comprend une ouverture traversante entre le logement individuel (14) et le moyen de chauffage (4), de préférence le graphène du moyen de chauffage.Bag (1, 1') according to the preceding claim, in which said at least one receiving means (12) is configured to allow contact between the object to be heated positioned in the individual housing (14), and the heating means (4), preferably the graphene of the heating means, for example wherein the receiving means (12) comprises a through opening between the individual housing (14) and the heating means (4), preferably the graphene of the of heating. Sac (1, 1') selon la revendication 12 ou 13, dans lequel le moyen de réception (12) comprend une mousse à cellules fermées, par exemple en EVA ou polyéthylène.Bag (1, 1') according to Claim 12 or 13 , in which the receiving means (12) comprises a closed cell foam, for example of EVA or polyethylene.
EP22206328.1A 2021-11-15 2022-11-09 Bag with heating means comprising graphene Pending EP4181626A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02228979A (en) * 1989-03-01 1990-09-11 Mitsuo Haniyuda Ball stocker with heating equipment
US6229132B1 (en) * 1998-05-01 2001-05-08 Brian P. Knetter Sporting equipment warmer having a microwaveable heat source
US7161120B1 (en) * 2006-03-16 2007-01-09 Michael Maurice Stroud Garment warming system
FR2997020A1 (en) * 2012-10-23 2014-04-25 Norbert Marc Melikian Device for heating triplet of petanque balls used by e.g. amateur petanque players, to practice petanque in outdoor during cold days, has previously charged battery supplying power to heating resistors to heat petanque balls in case
CN208572471U (en) * 2018-04-28 2019-03-01 华瑞墨石丹阳有限公司 A kind of graphene electrical heating bag

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02228979A (en) * 1989-03-01 1990-09-11 Mitsuo Haniyuda Ball stocker with heating equipment
US6229132B1 (en) * 1998-05-01 2001-05-08 Brian P. Knetter Sporting equipment warmer having a microwaveable heat source
US7161120B1 (en) * 2006-03-16 2007-01-09 Michael Maurice Stroud Garment warming system
FR2997020A1 (en) * 2012-10-23 2014-04-25 Norbert Marc Melikian Device for heating triplet of petanque balls used by e.g. amateur petanque players, to practice petanque in outdoor during cold days, has previously charged battery supplying power to heating resistors to heat petanque balls in case
CN208572471U (en) * 2018-04-28 2019-03-01 华瑞墨石丹阳有限公司 A kind of graphene electrical heating bag

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FR3129065A1 (en) 2023-05-19

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