EP3064115A1 - Kit de transformation d'un distributeur de serviettes automatique alimenté par batterie à énergie solaire - Google Patents

Kit de transformation d'un distributeur de serviettes automatique alimenté par batterie à énergie solaire Download PDF

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Publication number
EP3064115A1
EP3064115A1 EP15157198.1A EP15157198A EP3064115A1 EP 3064115 A1 EP3064115 A1 EP 3064115A1 EP 15157198 A EP15157198 A EP 15157198A EP 3064115 A1 EP3064115 A1 EP 3064115A1
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EP
European Patent Office
Prior art keywords
towel
kit
battery
dispenser
panel
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Withdrawn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
EP15157198.1A
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German (de)
English (en)
Inventor
Vivian Blick
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to EP15157198.1A priority Critical patent/EP3064115A1/fr
Publication of EP3064115A1 publication Critical patent/EP3064115A1/fr
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/34—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means
    • A47K10/36—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices

Definitions

  • the present invention relates to a kit for converting a battery-powered automatic towel dispenser into a solar-powered automatic towel dispenser for use in an indoor lit area.
  • a dispenser typically includes a proximity sensor, and automatic means for dispensing a measured length of paper towel, which can be torn off or retrieved from the dispenser by a user.
  • a motor arrangement is activated to dispense towel from its roll.
  • automatic towel dispensers are hygienic, since they can be operated without touching any part of the towel dispenser, such as a dispensing handle. They also serve to reduce wastage and reduce mess, since they should only dispense a limited length or number of towels sufficient to dry a person's hands.
  • the dispenser may be used to dispense one type of towel in one installation, or another type of towel at another installation- for example, higher quality (thicker) paper towels may be best suited for use in hotels, or lower quality (thinner) towels for public washrooms.
  • a fabric towel may be used instead.
  • an automatic towel dispenser requires electricity to work. Electricity may be supplied from the mains, but this increases the cost of installation significantly as safety regulations generally require a qualified electrician to undertake such work when in a washroom area. More commonly, battery-powered towel dispensers are provided, which are very easy to fit.
  • a towel dispenser is provided in two parts - a back section which includes a battery holder and an automatic towel dispenser arrangement, and a front cover which fits over the back section, hiding the internal mechanism. To install the dispenser, the back section is screwed to the wall, or attached using any other suitable fixings, batteries and a series of towels are installed, and then the front cover is clipped over to complete the installation.
  • Battery-powered towel dispensers are cheap and easy to install. However, the batteries require periodic replacement. Typically, four dry 'C' or 'D' sized cells are used. The cells are to power the dispenser. The cells are replaced by opening or removing the front cover, removing the old cells and replacing with new ones. Depleted batteries should ideally be recycled to recover raw materials, but the cost and inconvenience of doing so often means that they are discarded with general waste, which damages the environment.
  • a towel dispenser that comprises a back section and includes a proximity sensor, means for receiving and storing towels, an electrically-operated dispensing means to dispense towels when the proximity sensor is activated, and a battery compartment for receiving and connecting at least one battery to power the dispensing means, and which further comprises a front section for substantially covering the back section, is henceforth referred to as "a towel dispenser of the type described".
  • a towel dispenser of the type described may have a front section which is broader and/or taller than the rear section.
  • kits for converting a battery-powered automatic towel dispenser of the type described into a solar-powered automatic towel dispenser for use in an indoor lit area comprising
  • the kit is highly advantageous because it enables existing towel dispensers to be quickly and easily upgraded to use a more efficient battery and solar panel(s) in a matter of seconds.
  • the front section of the towel dispenser is opened or removed and the existing cells are taken out of the battery compartment.
  • the battery pack of the kit is then inserted into the battery compartment, the solar panels and support structure secured to the top of the rear section of the towel dispenser (which is attached to the wall), and the front section closed. This then allows the towel dispenser to operate for extended periods without battery maintenance. Locating the support structure and solar panels above the back section of the dispenser provides protection for the panels without increasing the footprint of the dispenser.
  • the kit harvests light from artificial light sources, which is advantageous in washrooms that are not substantially internally lit by sunlight for much of the day (or at all).
  • the rechargeable nickel-metal hydride (Ni-MH) low self-discharge (LSD) battery does not waste energy powering internal battery functions, further extending the operational lifetime of the dispenser during periods of intense use. Energy is drawn directly from the Ni-MH LSD battery pack on demand, and the user may pass their hand close to the proximity sensor to cause one or more towels to be dispensed for use.
  • Tuned amorphous silicon solar (TASS) panels and/or dye sensitised solar cell (DSSC) panels are particularly suitable for use in low-light conditions typically found in toilets and washrooms. They can be designed (i.e. tuned) specifically to operate at high efficiency in a particular spectrum, for example the spectrum emitted by typical fluorescent tubes.
  • the energy absorption capability of TASS or DSSC panels is great enough to allow the appended solar panel(s) and support structure to fit substantially within the existing width and depth of the towel dispenser being upgraded - i.e. bulky protruding solar panel extensions are not required for sufficient power generation.
  • the dispenser can operate indefinitely, without battery replacement, even in low-light conditions or where there is little or no natural light.
  • the support structure may have a sloped upper surface.
  • the support structure may be attached behind the front section of the towel dispenser.
  • the support structure provides a stable platform for the solar panels, preventing their angle being inadvertently changed.
  • the support structure may be wedge-shaped to achieve this, and its sloped surface angles the solar panels towards a light source to maximise energy harvesting.
  • the support structure is manufactured to support the panels at a specific angle. Locating the support structure and solar panels behind the front section reduces the degree to which the panels protrude into the room, reducing the likelihood of a damaging collision as a person walks by.
  • the kit fits onto the back section without significantly protruding from the dispenser as the front section is broader and taller than the back section, as is often the case with towel dispensers of the type described.
  • This provides a stepped area between the front section and the mounting wall in which the support structure and panels are secured to the top of the back section.
  • the front section is proud of the top of the back section, and the support structure is able to fit onto the back section within the stepped area such that it is not immediately apparent as an extension of the dispenser.
  • the total surface area of the solar panel(s) may be around 384 square centimetres.
  • the at least one tuned amorphous silicon solar panel or the at least one dye sensitised solar cell may harvest energy at a rate of substantially 5 microwatts ( ⁇ W) per square centimetre under artificial light conditions of substantially 200 lux.
  • the advantages of using at least one DSSC panel to charge the battery pack include the ability of DSSCs to function optimally in low-light conditions. They are also capable of efficiently harvesting light entering from a wide ranges of angles, and particularly acute angles, due to high light penetration into the titanium dioxide nanostructure within DSSCs. This makes DSSCs ideal for capturing the diffuse light available indoors. Additionally, as they utilise thin-film technology, they do not require a glass substrate and are consequently more robust and flexible.
  • the at least one TASS or DSSC panel and the support structure may be top-mounted on the towel dispenser, and the at least one panel may be disposed at an angle substantially between 60° and horizontal (0°) when the back section of the towel dispenser is mounted to a substantially vertical wall.
  • the panels are mounted at an angle of 30° from the horizontal, and more preferably around 20° from the horizontal.
  • the top surface of the back section is horizontal in use, therefore the panels may be provided at an angle substantially in the range 0-60° relative to the top surface.
  • a top-mounted solar panel is advantageous for absorbing light from ceiling-mounted lights, whilst still absorbing an appreciable amount of sunlight from any windows.
  • the top-mounted panel is preferably mounted at an angle to face into the room, towards any ceiling-mounted lights, plus any light reflected from walls and mirrors. Providing the panel at an angle of around 20° is found to be particularly advantageous, bearing in mind that the towel dispenser is likely to be mounted to a wall which is at the edge of a room. Also, if multiple solar panels are used, these can provide some redundancy - the unit will continue functioning even if one of the solar panels develops a defect or is blocked from light.
  • a water-resistant barrier may be provided to protect the battery pack from moisture.
  • a shrink wrap cover is provided to protect the cells of the battery pack, although other types of water-resistant or water-tight barrier may be provided, either integrally or as an additional component which is fitted over the battery compartment once the battery pack has been installed.
  • the battery pack is constantly recharged and has a long service life, for example around 10 years, the ease of changing the battery is a minimal consideration compared to the disposable dry cells which were used in the original battery-powered towel dispenser.
  • the batteries can therefore be sealed more securely, to prevent moisture from affecting their operation or causing degradation. This protects the battery pack from short-circuits, corrosion and leakage which can all be problems with conventional battery-powered towel dispensers.
  • the battery pack may comprise at least one set of two Ni-MH cells, connected in series.
  • two sets of two cells are provided.
  • a shrink-wrap cover is provided over each set of two cells.
  • the positive cable from the solar panel may be connected to one of the sets of cells and the negative cable from the solar panel may be connected to the other set of cells, so that the cells do not form a circuit with the solar panel when they are disconnected from each other.
  • the existing connections are used to form a charging circuit between the solar panels and the cells, and to connect the cells to the towel dispenser to provide it with power.
  • One or more Schottky blocking diodes may be provided between the solar panel and the cells. This prevents discharge of the cells through the solar panels in low-light conditions. Schottky blocking diodes are found to be preferable to providing a charge controller in this application, since they are small, simple and cheap. The Schottky blocking diodes use very little energy, enabling close to 100% efficiency in this part of the energy transfer. A conventional charge controller would typically have an efficiency of 80% or lower. This is significant as the amount of energy generated by the solar panel(s) is relatively low, and space is at a premium on the top of the towel dispenser. Using blocking diodes instead of an electronic charge controller allows a towel dispenser to be modified without adding particularly bulky extensions.
  • a towel dispenser being retro-fitted with the kit described above may include means for receiving and storing towels, a towel dispensing mechanism powered by the battery pack, at least one indicator lamp that illuminates to convey information, and a sensor to control activation of the dispensing mechanism.
  • the sensor is a proximity or motion sensor.
  • the proximity or motion sensor detects movement of a hand or arm in the region in front of the dispenser, and activates accordingly, conserving energy by remaining inactive when no activity is detected.
  • the towel dispensing mechanism may be activated when the sensor is triggered, dispensing a fixed length of towel per trigger event.
  • the towel dispensing mechanism may include at least one motorised reel to expel towel and a serrated portion to facilitate the disengagement of towel from the dispenser.
  • the towel can be dispensed from a reel of towel by rotating the reel, or alternatively from another arrangement of towels using a suitable mechanism.
  • the serrated edge allows non-perforated towels to be used as well as towels with periodic perforations as 'tear lines', without leading to additional towel waste.
  • the serrated edge is fixed near the towel dispensing portion of the dispenser, allowing users to manually tear the dispensed portion of towel away.
  • the at least one TASS or DSSC panel may be disposed substantially above or behind the sensor, so that the panel(s) will not be showered with droplets of water as users take towels. In most designs of towel dispenser of the type described, towels are dispensed from the bottom of the dispenser in any case.
  • the at least one indicator lamp may indicate the energy level remaining in the battery pack or the length of towel remaining, indicating whether there are few or no towels remaining, or whether the battery is approaching depletion.
  • the cable connection means between the externally-mounted solar panel(s) and the internally mounted battery pack will preferably fit through existing apertures in the body of the dispenser, so that the operation and maintenance of the towel dispenser (i.e. refilling with towels) is substantially unaffected by conversion to solar operation.
  • the towel dispenser may need to be disassembled or have additional apertures created to facilitate use of the conversion kit.
  • a first embodiment of a kit for converting a battery-powered automatic towel dispenser into a solar-powered automatic towel dispenser is indicated generally at 10.
  • the kit 10 has been fitted to a towel dispenser 100.
  • the kit 10 includes a support structure 12 on which top-mounted solar panels 14 are provided (where solar panel may refer to a tuned amorphous silicon solar (TASS) panel in one embodiment, or to a dye-sensitised solar cell (DSSC) panel in another embodiment, or a combination of the two).
  • the support structure is approximately wedge-shaped.
  • the solar panels 14 are disposed at an angle of around 30° at the top of the dispenser 100.
  • the solar panels 14 are rigidly secured to the support structure 12.
  • the solar panels 14 are connected to a battery pack via cable connection means as discussed later with reference to Figures 5 and 6 .
  • the solar panels 14 are tuned amorphous silicon solar panels, of a type designed to work at high efficiency specifically with artificial light sources.
  • the towel dispenser 100 has a very low quiescent power consumption, and draws energy mainly upon actuation, i.e. every time the towel dispenser 100 is triggered to dispense towels.
  • the battery is charged from the solar panels 14 continually, when the local area is sufficiently illuminated.
  • the solar panels 14 could be dye-sensitised solar cell (DSSC) panels, which, although more expensive, are also efficient at harvesting electrical energy from artificial light, and flexible enough to fit to a range of surface contours.
  • Schottky diodes (not shown) are provided to prevent current from flowing back from the rechargeable cell to the solar panels 14 in dark conditions.
  • the dispenser 100 has a front section 102 and a back section 104, the back section 104 being mounted to a wall when the dispenser 100 is installed.
  • the support structure 12 is fixed to an upper surface of the back section 104.
  • the front section 102 is a door covering the back section 104, and is hinged to the back at one side. In use, the front face of the front section 102 faces away from the wall.
  • the support structure 12 and panels 14 are inherently set back from the front section 102.
  • the recessed nature of the back section 104 relative to the front is clear in Figures 1 to 3 .
  • the back section 104 is not visible in Figure 3 due to the perspective and the solar panels 14 appear to emerge upwardly and rearwardly from the front section 102, which is an aesthetically pleasing arrangement, and also prevents the panels from protruding excessively, which might increase the likelihood of damage.
  • a towel exit 106 is disposed along the lowermost front edge of the dispenser 100. Above the towel exit 106 is a window 108 in the front section 102.
  • the window 108 is approximately semi-circular in shape.
  • the window has symbols on its surface to represent the battery level and length of towel remaining.
  • Indicator lamps 110 are provided behind these symbols to illuminate them when threshold values for battery level or length of towel remaining are reached.
  • a proximity sensor (not shown) is also provided behind the same window 108. As the window 108 is transparent or translucent, the sensor is able to detect nearby motion of a user, and provides input to an electronic controller (not shown) within the dispenser 100 when an object is detected in proximity.
  • the lamps 110 indicate the battery level of the dispenser 100, and the length of towel remaining in the device. This may be a simple 'low level' indicator, or may be a more sophisticated numerical indication. Another lamp may indicate that a towel is being dispensed, or that an error has occurred internally, perhaps due to a towel becoming jammed or the device running out of towels.
  • the towel exit 106 has a raised outer lip 112, and a serrated edge 114a of a paper towel 114 is visible inside the exit 106.
  • the edge 114a as viewed has been pulled down to lie slightly over a metal serrated edge (not directly visible) that lies along the line indicated by 116, i.e. lying behind the paper towel 114.
  • the metal edge allows a user cut the towel free by pulling a dispensed length of towel across the edge at an angle.
  • a controller Contained within the front section 102, and not shown in the Figures, are a controller and a motorised towel dispensing mechanism.
  • the controller is adapted to activate the dispensing mechanism on demand when triggered by the sensor, i.e. when a user waves their hand in front of the device.
  • towels are mounted within the body of the dispenser 100, and positioned so that the towels may be mechanically dispensed out of the towel exit 106.
  • the body of the dispenser 100 also includes a rechargeable cell (not shown), which powers the dispenser 100 and is charged by the solar panels 14.
  • the kit is advantageous because it is quick and easy to install, and reduces the maintenance requirements for a towel dispenser.
  • Existing towel dispensers can be retro-fitted with the kit, avoiding the need to manufacture and install new towel dispensers to replace otherwise functional dispensers, preventing unnecessary waste. It also makes the operation of the towel dispenser more environmentally friendly by allowing it to run solely using solar power, and the panels are positioned atop the device to maximise exposure to ceiling lights in a washroom. Placing the panels high on the device also protects them from unintentional damage.
  • the converted towel dispenser is advantageous because it needs very infrequent maintenance. Typically, the rechargeable cell will not need changing for five to ten years. It is estimated that, over twenty years, the solar panel will lose less than 20% efficiency. The position and type of the solar panels 14 ensure that maximum energy is harvested, even from low-level artificial light.
  • FIG. 5 shows a battery pack, indicated generally at 16, which forms part of the kit.
  • the battery pack 16 includes two sets of two 'D' sized rechargeable cells 18, 20. Each set of cells is shrink-wrapped to protect them from moisture, and to hold the two cells of the set together to form one 'long cell'.
  • the cells in the set are attached to each other in series, i.e. the negative terminal of one cell is connected to the positive terminal of the other cell.
  • a first cable 22 is attached to the negative end of the first cell set 18, and another cable 24 is attached to the positive end of the second cell set 20. These cables then connect to the solar panels 14 (not visible in Figure 5).
  • Figure 6 shows a battery compartment 26 which is part of the towel dispenser and used to house the battery pack 16 of Figure 5 . It is designed for four 'D' cells, but the two 'long cells' of the kit 10 also fit. It will be appreciated that battery compartments of alternative shapes and sizes may be present in different towel dispensers, and that the battery pack may vary in shape and size to fit within a different such battery compartment of complementary shape and size.
  • the towel dispenser is typically attached to a wall in a washroom and located to optimise the current generated by incident light on the solar panel (although the wall chosen for mounting the device will have some bearing on the available luminous flux density).
  • the unit is then relatively autonomous, with towel being dispensed on demand, and maintenance only needed to replenish the supply of towels.
  • the front section 102 is opened by unlocking and swinging it away from the back section 104 of the dispenser 100. If towels are currently installed, they may need to be temporarily removed to access to the battery compartment 26. Then, the battery pack 16 is installed in the battery compartment 26 by installing each 'long cell' 18, 20 into a respective side of the battery compartment.
  • the internal connections in the battery compartment 26 join the two 'long cells' together in series, and connect the positive and negative terminals of the four-cell battery to the towel dispenser 100, for powering the proximity sensor, dispensing means (not shown), and any other electrically-powered features.
  • the cable connection means 22, 24 which lead to the solar panels are guided into the body of the dispenser 100, and aligned to avoid damage when the front section 102 is re-attached.
  • the towels can then be re-installed, and the door closed.
  • the converted towel dispenser 100 is then ready for use. The whole process can be completed in a matter of seconds, streamlining the upgrade process and enabling the towel dispenser 100 to function more effectively.
  • the towel dispenser may be expected to operate for around 10 years without requiring any battery maintenance. Conversion of an existing battery-operated towel dispenser may be carried out in-situ, with minimal effort. The converted towel dispenser is more reliable, because the batteries are unlikely to fail. The risk of battery leakage is also significantly reduced, since each 'long cell' is substantially sealed in shrink wrap. As access to the battery compartment is generally not required once the towel dispenser has been converted, extra seals may be included over the battery compartment as part of the conversion process, further reducing the possibility that moisture will damage the batteries.
  • kits according to the invention can be made which are suitable for different models of towel dispensers of the type described.
  • the type of towel dispensing means and towel storage means may be different in different devices.
  • a wide range of towel dispensers are available which comprise a back section including a proximity sensor, means for receiving towels, electrically-operated dispensing means to expel towels when the proximity sensor is activated, and a battery compartment for receiving and connecting at least one cell to power the dispensing means, and which further comprise a front section for substantially covering the back section.
  • Many different towel dispensers of this type may be upgraded with a suitable kit according to the invention.

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  • Public Health (AREA)
  • Battery Mounting, Suspending (AREA)
EP15157198.1A 2015-03-02 2015-03-02 Kit de transformation d'un distributeur de serviettes automatique alimenté par batterie à énergie solaire Withdrawn EP3064115A1 (fr)

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Application Number Priority Date Filing Date Title
EP15157198.1A EP3064115A1 (fr) 2015-03-02 2015-03-02 Kit de transformation d'un distributeur de serviettes automatique alimenté par batterie à énergie solaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15157198.1A EP3064115A1 (fr) 2015-03-02 2015-03-02 Kit de transformation d'un distributeur de serviettes automatique alimenté par batterie à énergie solaire

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EP3064115A1 true EP3064115A1 (fr) 2016-09-07

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605470A1 (fr) * 1986-10-20 1988-04-22 Viozelange Eric Panneau solaire pour alimenter un transistor et/ou recharger les piles du transistor
WO1997029671A1 (fr) * 1996-02-16 1997-08-21 Mosinee Paper Corporation Distributeurs de serviettes en papier mains libres
US6412679B2 (en) 1998-05-20 2002-07-02 Georgia-Pacific Corporation Paper towel dispenser
US20090058352A1 (en) * 2007-08-27 2009-03-05 Yu Chuan Technology Enterprise Co., Ltd. Cold storage device capable of collecting solar power
WO2009082294A1 (fr) 2007-12-21 2009-07-02 Sca Hygiene Products Ab Distributeur de serviettes en papier mains libres
WO2012103446A2 (fr) * 2011-01-28 2012-08-02 Korman Bette Système énergétique portatif modulaire
EP2572969A1 (fr) * 2011-09-26 2013-03-27 Jintex Corporation Ltd. Dispositif à énergie solaire utilisé pour bicyclette
GB2515354A (en) * 2013-08-29 2014-12-24 Vivian Blick Fragrance sprayer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605470A1 (fr) * 1986-10-20 1988-04-22 Viozelange Eric Panneau solaire pour alimenter un transistor et/ou recharger les piles du transistor
WO1997029671A1 (fr) * 1996-02-16 1997-08-21 Mosinee Paper Corporation Distributeurs de serviettes en papier mains libres
US6412679B2 (en) 1998-05-20 2002-07-02 Georgia-Pacific Corporation Paper towel dispenser
US20090058352A1 (en) * 2007-08-27 2009-03-05 Yu Chuan Technology Enterprise Co., Ltd. Cold storage device capable of collecting solar power
WO2009082294A1 (fr) 2007-12-21 2009-07-02 Sca Hygiene Products Ab Distributeur de serviettes en papier mains libres
WO2012103446A2 (fr) * 2011-01-28 2012-08-02 Korman Bette Système énergétique portatif modulaire
EP2572969A1 (fr) * 2011-09-26 2013-03-27 Jintex Corporation Ltd. Dispositif à énergie solaire utilisé pour bicyclette
GB2515354A (en) * 2013-08-29 2014-12-24 Vivian Blick Fragrance sprayer
WO2015028816A1 (fr) * 2013-08-29 2015-03-05 Vivian Blick Kit permettant de convertir l'alimentation par pile d'un pulvérisateur de parfum automatique en une alimentation par énergie solaire

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