EP4201244A1 - Dispositif de climatisation pour un casque - Google Patents

Dispositif de climatisation pour un casque Download PDF

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Publication number
EP4201244A1
EP4201244A1 EP21000364.6A EP21000364A EP4201244A1 EP 4201244 A1 EP4201244 A1 EP 4201244A1 EP 21000364 A EP21000364 A EP 21000364A EP 4201244 A1 EP4201244 A1 EP 4201244A1
Authority
EP
European Patent Office
Prior art keywords
helmet
air
heat pump
air conditioning
fan
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.)
Withdrawn
Application number
EP21000364.6A
Other languages
German (de)
English (en)
Inventor
Aline Klippel
Alexander Timm
Maximilian Göppert
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Priority to EP21000364.6A priority Critical patent/EP4201244A1/fr
Priority to PCT/EP2022/086182 priority patent/WO2023117700A1/fr
Publication of EP4201244A1 publication Critical patent/EP4201244A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A42B3/286—Ventilating arrangements with forced flow, e.g. by a fan
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A42B3/285—Ventilating arrangements with additional heating or cooling means

Definitions

  • the invention relates to an air conditioning device for a helmet, a helmet with an air conditioning device, and a method for operating an air conditioning device according to the species of the independent patent claims.
  • thermoelectric heat pump From the US6954944B2 a helmet device is known which is air-conditioned by means of a thermoelectric heat pump.
  • the heat pump is located either inside the helmet structure or externally well away from the helmet structure.
  • the device according to the invention with the features of the independent patent claims has the advantage that in the event of a traffic accident the risk of injury is minimized without the need for additional complex connecting elements.
  • an air conditioning device for a helmet in particular a motorcycle helmet, is proposed here with at least one air conditioning module and an air duct unit, the at least one air conditioning module preferably being arranged outside the helmet, the at least one air conditioning module having at least one first fan, the air duct unit having at least one first duct , which connects the air conditioning module to a front area of the helmet in an air-conducting manner, the air conditioning module is attached to the helmet via a detachable connection, the detachable connection releasing as a function of a force acting on the helmet, the force acting exceeding a predetermined threshold value.
  • a helmet is understood here as a protective helmet with at least one hard helmet shell. This can be a helmet adapted for a specific purpose. In addition to many other types of helmets, a motorcycle helmet, an automobile sports helmet or a bicycle helmet is possible here. Other sports helmets or protective helmets for certain professions can also be air-conditioned using the invention.
  • An air conditioning device used here consists of at least one air conditioning module, which makes it possible to provide heated and/or cooled and/or moving air, and an air duct unit, which enables the air to be transported.
  • An arrangement “outside the helmet” here means an arrangement at least largely outside the shell of the helmet.
  • this also explicitly includes solutions in which parts of the air conditioning module protrude, for example, into recesses in the outer shell of the helmet and/or the inner shell of the helmet.
  • the front area of the helmet designates the complete front half of the helmet and in particular also includes the area of the face and the visor. Position information such as “back” or “front area” always refers to the classic way of wearing a helmet with an opening for the head at the bottom and the user looking forward.
  • a duct can be any spatial arrangement that carries a fluid, in particular air, over a certain extent.
  • a channel is preferably elongate.
  • the channel can have a separate channel wall, or its wall can result from a recess in a specific arrangement without a separate channel wall.
  • the wall can also be partially interrupted and can have any cross section.
  • a channel does not have to be completely surrounded by walls, but can also be partially open.
  • a channel can also be formed by a groove in the helmet shell.
  • Detachable connections are explicitly not limited to detachable and then reconnectable connections, but the possibility is also explicitly considered that the components that are separated by the detachable connection cannot be reconnected afterwards and/or a defective one point and/or are subsequently defective.
  • the force from which the detachable connection is released is selected so that it is released in the event of forces that reach or exceed a predeterminable threshold value.
  • This threshold value can be selected so that it corresponds to a test standard for protective helmets (e.g. ECE22 or DOT).
  • the force from which the detachable connection is released can be between 10 N and 100 N, for example.
  • the force that loosens the connection to the climate control module can be caused by an impact and/or a traffic accident.
  • the air conditioning module includes a housing and/or is arranged in the rear area of the helmet.
  • the housing is preferably made of a solid material and encloses the air conditioning module at least partially, preferably for the most part, particularly preferably completely.
  • the housing of the climate control module is preferably connected directly to the outer shell of the helmet.
  • a power supply can preferably be arranged outside the housing. In an alternative embodiment, however, the power supply can also be arranged inside the housing. It is also possible for the housing to enclose the air conditioning module on all but one side and for the air conditioning module to rest against the outer shell of the helmet on the remaining side and thus be limited by the outer shell of the helmet itself.
  • An arrangement in the rear area of the helmet is advantageous, as this reduces noise from air turbulence and additional air resistance to a minimum.
  • An arrangement in the area of the rear is preferred here Third of the helmet circumference.
  • the climate control module is particularly preferably arranged centrally at the rear with respect to the circumferential direction of the helmet.
  • the air conditioning module is also preferably arranged in the lower area of the helmet, particularly preferably on the lower edge of the helmet. This ensures that the center of gravity of the helmet is as low as possible.
  • the lower area of the helmet refers here to the lower half, preferably the lower third of the helmet.
  • the detachable connection particularly preferably has or is one or more clips and/or one or more plug-in connections and/or one or more plastic screws which are designed in such a way that they break when a predetermined force is applied.
  • a clip is understood to mean a spring clamp which uses the force of a spring to connect several components to one another. With a plug-in connection, two parts are plugged into one another. These may or may not snap. A plastic screw that breaks when a predetermined force is applied serves as a kind of predetermined breaking point.
  • the climate control module is particularly preferably detached from the helmet in the event of an impact.
  • the climate control module detaches from the helmet, thus preventing injury to the user of the helmet and/or damage to the helmet, thereby reducing its protective effectiveness.
  • the at least one air conditioning module advantageously has a heat pump arrangement with a first heat pump side and a second heat pump side, the heat pump arrangement being suitable for pumping heat from the first heat pump side to the second heat pump side and/or from the second heat pump side to the first heat pump side.
  • a heat pump arrangement allows heat to be pumped from a first heat pump side to a second heat pump side and/or vice versa while supplying energy, preferably electrical energy.
  • the two sides of the heat pump are spatially and thermally separated from each other.
  • the term heat pump side is only to be understood phenomenologically and therefore makes no statement about a flat expansion.
  • the heat pump arrangement can be extensive, with the two sides of the heat pump then being two large surfaces that are preferably opposite one another.
  • the heat pump arrangement is preferably a thermoelectric module, in particular a Peltier element.
  • thermoelectric module makes it possible to generate a temperature difference using the Peltier effect by means of an applied current.
  • a heat pump effect can also be achieved in this way.
  • a thermoelectric module can also be operated in reverse and, as a thermoelectric generator, can generate a voltage or current flow from a temperature difference.
  • a Peltier element With a Peltier element, the focus is on use for heating, cooling or heat pumps.
  • a Peltier element preferably has two or preferably several differently doped semiconductor elements which are connected in series via conductor bridges. For example, this series connection can be arranged between two ceramic substrates. These also ensure mechanical stabilization.
  • the doped semiconductor elements are arranged in such a way that when current flows, one side of the Peltier element heats up and the other side cools down. If, for example, the heat is dissipated on the hot side, the cold side can be further cooled down with otherwise constant parameters, in particular with constant electrical power, than if this is not the case. It is therefore an advantage if the heat is dissipated on the warm side in "cooling mode".
  • the heat pump arrangement has a first heat exchanger, which is arranged on the first heat pump side, and/or a second heat exchanger, which is arranged on the second heat pump side.
  • a heat exchanger enables or improves the transfer of heat from one medium to another.
  • heat exchangers are used in order to be able to transfer heat better between a solid body—here the heat pump arrangement—and an air flow.
  • a heat exchanger is used in order to improve the heat transfer between a heat pump side and air guided or flowing past the heat pump side.
  • cooling fins This can be, for example, (cooling) fins or a heat sink.
  • the terms cooling fins and heat sinks also include the case where heat is transferred from the fluid to the solid body.
  • the at least one first fan is particularly preferably arranged on the first heat pump side and the at least one air conditioning module has a second fan which is arranged on the second heat pump side.
  • the air duct unit has at least one second duct, which connects the second side of the heat pump to the front area of the helmet in an air-conducting manner, the first fan and/or the second fan are connected to the ambient air in an air-conducting manner, the first fan guides air to the first side of the heat pump during operation over and into the first channel.
  • the second fan guides air out of the second duct and past the second side of the heat pump.
  • a fan is located on a side
  • the fan must touch the side. This means in particular that the fan is located close to the corresponding side and communicates fluidly with it.
  • the heat pump arrangement cools the air flowing past the first heat pump side and heats the air flowing past the second heat pump side and/or that the heat pump arrangement in a second operating state heats the air flowing past the first heat pump side and the air flowing at the second Heat pump side flowing air cools and / or that the heat pump assembly in a third Operating state is deactivated and thus neither the air flowing past the first side of the heat pump heats or cools nor the air flowing past the second side of the heat pump heats or cools.
  • cooled air is thus routed via the air guidance unit into the front area of the helmet.
  • a user of the helmet can be particularly preferably cooled and/or the moving air can protect the visor of the helmet and/or the user's goggles from fogging up.
  • heated air is routed to the front area of the helmet via the air duct unit.
  • This operating state can be used to warm the user of the helmet and/or to protect the visor of the helmet and/or a user's glasses from fogging.
  • the heat pump arrangement is deactivated, but the first fan and/or the second fan are active and conduct ambient air via the air duct unit into the front area of the helmet and/or conduct air out of the air duct unit of the helmet and direct it to the environment .
  • the helmet has a visor with an inside of the visor and the first channel is connected to the inside of the visor in an air-conducting manner via at least one nozzle and the second channel is connected to the inside of the visor in an air-conducting manner.
  • a nozzle is generally understood here as a transition piece between a channel and a free space.
  • the nozzle allows air from the first channel to be directed into the area between the visor and the face.
  • the at least one nozzle is particularly preferably adjustable in such a way that ventilation of the face, a pair of glasses and/or the inside of the visor is achieved.
  • the air conditioning module is advantageously connected to a control device and/or a power supply.
  • the power supply is, for example, a battery or an accumulator.
  • the power supply is preferably a so-called "power bank".
  • a power bank is a mobile additional battery that usually provides a constant output voltage such as 5V or 12V via an additional switching converter.
  • the power supply can be arranged on the helmet.
  • the power supply is stowed in a backpack, a jacket pocket or the like and is connected to the helmet via a cable.
  • a battery of a vehicle that the user of the helmet uses when wearing the helmet can also serve as the power supply.
  • the battery of the vehicle is connected to the helmet via a cable.
  • the control device can also be arranged on the helmet. It is advantageously arranged on the side of the helmet. Alternatively, the control device can be attached to the user's clothing away from the helmet, advantageously via a clip, or it can also be carried in a pocket. Alternatively, it is also possible to attach the control device to the vehicle, for example to the handlebars of a motorcycle.
  • the control device can have an operating element.
  • the control element advantageously contains one or more switches and/or a display.
  • the control device can be controlled via an application (app), for example on a mobile phone.
  • control device can operate the air conditioning module in the first operating state and/or the second operating state and/or the third operating state and/or switch it to a switched-off or standby state.
  • the power of the first fan and/or the second fan and/or the heat pump arrangement can also be set via the control device.
  • the first fan and/or the second fan are also deactivated in the switched-off or standby state.
  • the power supply is completely interrupted, while the air conditioning arrangement can be quickly reactivated in the standby state.
  • this helmet has ventilation slots provided for passive ventilation.
  • the ventilation slots can open into the first channel and/or into the second channel and/or into a separate area or channel provided for passive ventilation.
  • the passive ventilation can be sufficient in some cases and the air-conditioning system can be switched to a switched-off or standby state.
  • cases that require active climate control even when driving fast are, for example, high temperatures of more than 25°C or rainy and/or cool weather with temperatures below 18°C, and/or high humidity conditions, since in the latter cases frequently fog up the visor and/or glasses. It is also possible to use the helmet while it is completely switched off and, for example, to only use passive cooling.
  • the first fan sucks in ambient air, preferably via a filter
  • the second fan sucks air out of the helmet via at least one ventilation opening, guides it past the second heat pump side and discharges it into the ambient air.
  • a filter is in this case in particular an air filter which cleans the intake air of impurities and prevents foreign bodies from penetrating into the air conditioning device.
  • Ventilation openings are understood here as meaning any air-permeable opening.
  • the second fan sucks air out of the second channel through the ventilation openings.
  • the air extracted from the second duct is routed past the second side of the heat pump in order to cool it or to transport heat away from it.
  • the extracted air is slightly warmer than the ambient temperature, but the temperature is still low enough to efficiently cool the second side of the heat pump.
  • the decisive advantage of this arrangement is that the second fan takes on two functions: sucking the air out of the helmet to enable improved air circulation in the helmet and cooling the second side of the heat pump, which enables optimal operation of the heat pump arrangement.
  • two fans are sufficient for all functions (Drawing in air from the environment, introducing the conditioned air into the helmet, exhausting the air from the helmet, cooling the waste heat side of the heat pump arrangement and discharging the used air into the environment).
  • the first channel is thermally insulated on its outside and/or the second channel enables a thermal exchange with the interior of the helmet. Due to the thermal insulation of the first duct, the conditioned air can be transported particularly advantageously with the smallest possible temperature difference to its point of use, for example in the area of the face.
  • the interior of the helmet is very generally the inner area of the helmet in which the user's head is located during use. Because the second channel enables an exchange with the helmet interior, the head can be further air-conditioned.
  • a helmet with an air conditioning device preferably has a helmet inner shell, the helmet inner shell having recesses that are suitable for receiving at least the first channel and/or at least the second channel, and/or at least the first channel and/or at least the second channel are embedded in the helmet inner shell, and/or wherein the first channel and/or the second channel are realized as hoses.
  • the first channel and/or the second channel can preferably be a channel that is already provided for the passive ventilation of the helmet.
  • the first channel and/or the second channel can also be implemented in such a way that the recesses in the helmet inner shell form the respective channel directly, without an additional channel material being used for a channel wall.
  • the first channel and/or the second channel can be flow channels.
  • the first channel for conducting air into the front area of the helmet is arranged as far as possible on the lower edge of the helmet. With this arrangement, the center of gravity of the helmet is as low as possible, which ensures optimum comfort even when accelerating.
  • the helmet has a number of ventilation slits for passive ventilation of the helmet.
  • the invention also includes a method for operating an air conditioning device according to the invention.
  • the total weight of the air conditioning device is preferably less than 400 g.
  • the total weight is particularly preferably between 70 g and 250 g. In this case, the total weight is the weight that is added to the total weight of the helmet by the air conditioning device.
  • FIG. 1 shows a helmet 1 with an air conditioning device 2 in a side view.
  • An air conditioning module 4 is arranged in the rear area of the helmet 3 .
  • the air conditioning module 4 has a housing 5 .
  • An air duct unit 6 connects the air conditioning module 4 to the front area of the helmet 7.
  • a heat pump arrangement 8 with a first heat pump side 9 and a second heat pump side 10 is designed as a thermoelectric module 11 here.
  • a first fan 12 is arranged in such a way that, during operation, it guides air past the first side 9 of the heat pump and introduces it into a first duct 13 .
  • a second fan 14 is arranged in such a way that, during operation, it directs air out of a second duct 15 and past the second side 10 of the heat pump.
  • the first duct 13 and the second duct 15 are part of the air duct unit 6 and connect the air conditioning module 4 to the front area of the helmet 7.
  • the first fan 12 sucks in ambient air 17 via a filter 16 (not visible in the drawing), guides it past the first side 9 of the heat pump and into the first duct 13 .
  • the second fan 14 sucks air out of the second duct 15 via the ventilation opening 18 , guides it past the second heat pump side 10 and discharges it into the ambient air 17 .
  • the helmet 1 also has a visor 19 with an inside 20 of the visor.
  • a first heat exchanger 21 is arranged on the first heat pump side 9 of the heat pump arrangement 8 .
  • a second heat exchanger 22 is arranged on the second heat pump side 10 .
  • the heat pump arrangement 8 is designed here as a thermoelectric module 11 or as a Peltier element.
  • the air conditioning module 4 can be operated in a first operating state. For this purpose, a current with a first current direction is applied to the Peltier element.
  • the first heat pump side 9 cools down and the second heat pump side 10 heats up.
  • the first heat pump side 9 is the useful side. In the first operating state, therefore, heat is absorbed on the first heat pump side 9 via the first heat exchanger 21 from the air that was sucked in by the first fan 12 and is guided past the first heat pump side 9 .
  • the air flowing past is therefore efficiently cooled.
  • the cooled air is introduced into the first channel 13, where it flows to the area to be air-conditioned in the front area of the helmet 7. Since the first duct 13 is thermally insulated from its outside, the cooled air does not heat up or heats up only very slightly while it flows through the first duct 13 .
  • Heat exchange takes place in the front area of the helmet 7 and the conditioned air cools the user.
  • the air that has been heated up again as a result can now be sucked back into the rear area of the helmet 3 through the second duct 15 with the aid of the second fan 14 become.
  • the second channel 15 enables thermal exchange with the interior of the helmet.
  • the user can be further cooled in the first operating state.
  • the air is now sucked out of the second channel 15 through the ventilation opening 18 by the second fan 14 and guided past the second side 10 of the heat pump. Although the air is warmer than the ambient temperature 17 at this point, the temperature is still low enough to efficiently cool the second heat pump side 10 .
  • the second heat pump side 10 heats up and emits waste heat into the air flowing past via the second heat exchanger 22 .
  • the air flowing past here is thereby further heated and released into the ambient air 17 .
  • the Peltier element In a second operating state, the Peltier element is operated with a second current direction, which has the opposite sign to the first current direction.
  • the second operating state works largely in the same way as the first operating state, except that here it is heated and not cooled.
  • the air flowing past the first heat pump side 9 is heated via the first heat exchanger 21 .
  • the heated air is conducted via the first channel 13 into the front area of the helmet 7, where it can give off heat to the user and/or prevent the inside of the visor 20 or the goggles 23 from fogging up.
  • the air is discharged via the second duct 15 , flows past the second heat exchanger 22 on the second heat pump side 10 and is discharged to the ambient air 17 .
  • the air flows through a nozzle 24 in the front area of the helmet 7 from the first channel 13 into the area near the inside of the visor 20.
  • the nozzle 24 can be adjusted and the air flow can thus preferably be directed to the visor 19 or the glasses 23 or be directed to the area of the face.
  • a control device 25 can operate the air conditioning module 4 in the first operating state, the second operating state or the third operating state or put the air conditioning module 4 into a switched-off state or a standby state. Furthermore, the power of the first fan 12 and/or the second fan 14 and/or the thermoelectric module 11 can be set via the control device 25
  • the air conditioning module 4 has an external power supply 26 which is arranged outside the housing 5 of the air conditioning module 4 .
  • the helmet 1 is passively ventilated by additional ventilation slots 27 when driving sufficiently fast.
  • the air conditioning module 4 is here detachably attached to the helmet 1 by means of several plastic screws 28 .
  • the plastic screws 28 are designed in such a way that they break when a predetermined force is applied, thus ensuring that the plastic screws 28 break in the event of an accident and the connection between the air conditioning module 4 and the helmet 1 is thus released.
  • FIG. 2 shows an exploded view of a helmet 1 with air conditioning module 4.
  • the air conditioning module 4 is arranged in a housing 5, wherein in the present embodiment the housing 5 does not completely enclose the air conditioning module 4, but the air conditioning module rests directly on the helmet 1 on one side.
  • Ambient air 17 can be sucked in by the first fan 12 and can flow into the helmet via two first channels 13 .
  • the ambient air 17 in the air conditioning module can be air-conditioned via a heat pump device 8 or just moved.
  • the second fan 14 can suck air out of the helmet 1 .
  • the airflow in the helmet is not shown here.

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  • Helmets And Other Head Coverings (AREA)
EP21000364.6A 2021-12-21 2021-12-21 Dispositif de climatisation pour un casque Withdrawn EP4201244A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21000364.6A EP4201244A1 (fr) 2021-12-21 2021-12-21 Dispositif de climatisation pour un casque
PCT/EP2022/086182 WO2023117700A1 (fr) 2021-12-21 2022-12-15 Dispositif de climatisation pour casque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21000364.6A EP4201244A1 (fr) 2021-12-21 2021-12-21 Dispositif de climatisation pour un casque

Publications (1)

Publication Number Publication Date
EP4201244A1 true EP4201244A1 (fr) 2023-06-28

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ID=79230924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21000364.6A Withdrawn EP4201244A1 (fr) 2021-12-21 2021-12-21 Dispositif de climatisation pour un casque

Country Status (2)

Country Link
EP (1) EP4201244A1 (fr)
WO (1) WO2023117700A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000234213A (ja) * 1999-02-10 2000-08-29 Suzuki Motor Corp ヘルメット用空調装置
US6954944B2 (en) 2003-06-23 2005-10-18 Steve Feher Air conditioned helmet apparatus
US20100294270A1 (en) * 2007-11-12 2010-11-25 Curran Desmond T Respirator Assembly with Air Flow Direction Control
US20200229530A1 (en) * 2017-02-15 2020-07-23 Steve Feher Climate controlled headgear apparatus
FR3098377A1 (fr) * 2019-07-14 2021-01-15 Gérard Negrier Dispositif de gestion et de pilotage pour ventilation climatisée de casque de moto, d’automobile sportive et autre engin motorisé

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000234213A (ja) * 1999-02-10 2000-08-29 Suzuki Motor Corp ヘルメット用空調装置
US6954944B2 (en) 2003-06-23 2005-10-18 Steve Feher Air conditioned helmet apparatus
US20100294270A1 (en) * 2007-11-12 2010-11-25 Curran Desmond T Respirator Assembly with Air Flow Direction Control
US20200229530A1 (en) * 2017-02-15 2020-07-23 Steve Feher Climate controlled headgear apparatus
FR3098377A1 (fr) * 2019-07-14 2021-01-15 Gérard Negrier Dispositif de gestion et de pilotage pour ventilation climatisée de casque de moto, d’automobile sportive et autre engin motorisé

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Publication number Publication date
WO2023117700A1 (fr) 2023-06-29

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