EP3736387A1 - Automatischer wasserhahn - Google Patents

Automatischer wasserhahn Download PDF

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Publication number
EP3736387A1
EP3736387A1 EP19173184.3A EP19173184A EP3736387A1 EP 3736387 A1 EP3736387 A1 EP 3736387A1 EP 19173184 A EP19173184 A EP 19173184A EP 3736387 A1 EP3736387 A1 EP 3736387A1
Authority
EP
European Patent Office
Prior art keywords
faucet
control
valve
water
cartridge
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Withdrawn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
EP19173184.3A
Other languages
English (en)
French (fr)
Inventor
Claus Rantzau
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.)
Fm Mattsson Denmark Aps
Original Assignee
Fm Mattsson Mora Group Danmark Aps
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 Fm Mattsson Mora Group Danmark Aps filed Critical Fm Mattsson Mora Group Danmark Aps
Priority to EP19173184.3A priority Critical patent/EP3736387A1/de
Publication of EP3736387A1 publication Critical patent/EP3736387A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/05—Arrangements of devices on wash-basins, baths, sinks, or the like for remote control of taps
    • E03C1/055—Electrical control devices, e.g. with push buttons, control panels or the like
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths

Definitions

  • the current invention relates to control faucets, mixer faucets, automatic faucets and dual faucets with at least one automatically controlled line of water.
  • Sinks and faucets are supplied in restrooms and kitchens.
  • public restrooms there is an increased focus on cheap and effective sanitation, and therefore automatic non-touch faucets are becoming more prevalent.
  • One reason is to serve the elderly and children who may not have the dexterity to control a manual faucet with precision.
  • Faucets essentially comprise hydraulic parts built into a shell made from brass or zinc alloys or other such materials which may be plated with chromium or other metals chosen for their aesthetics and ease of machinability.
  • Standards have arisen for many of these hydraulic parts which allows designers to develop and prototype various faucet designs and easily to achieve the best results, both from an economical and aesthetic standpoint.
  • Standard parts allow a designer to compete on system design and the faucet look-and-feel.
  • One such standard part used in faucet systems is a ceramic cartridge which allows control of water mixing and dispensing pressure. This, however, is not used with automatic faucets.
  • a control faucet for providing a controlled outlet of water through a liquid outlet
  • said control faucet comprising a faucet shell for providing a faucet cavity.
  • the faucet shell encapsulates the cavity from the outside environment, but may provide access from beneath the tabletop to this cavity.
  • the control faucet further comprises a control cartridge having a top surface and a bottom surface, wherein said bottom surface comprises at least one inlet opening for receiving water to be controlled, a controlling means for controlling at least the flowrate through said control cartridge, and at least one outlet opening for delivering controlled water.
  • the control cartridge is conveniently a ceramic cartridge. It may have only a single inlet opening or two, or more than two.
  • the examples given in the present disclosure describe a ceramic cartridge having two inlet openings and one outlet opening on the first, bottom side. This should not be seen as limiting to the scope of the inventionwhich may be incorporated with ceramic cartridges having other numbers of inlet openings.
  • the mixer faucet further comprises an electrically operable shutoff valve fluidly connected to the outlet opening of the control cartridge, where controlled water from the outlet opening passes a conduit in the valve before exiting the faucet, where the control cartridge and said valve are positioned at least substantially inside said faucet cavity.
  • the electrically operable shutoff valve is a valve of a type that allows shutting off the water flow though the valve as well as allowing water flow through the valve depending on an electrical signal. Typically, a closed valve will open when receiving an electrical signal and then close again once the signal is stopped.
  • a valve and a shutoff valve are used interchangeably to denote the electrically operable shutoff valve.
  • the faucet cavity is the cavity inside the faucet where the hydraulic parts are located, which is at least partially open from below. If the hydraulic parts, such as the valve part, extend from the faucet cavity, it extends downwards to under the tabletop.
  • the mixer faucet allows standard ceramic cartridges to be used in a valve-controlled faucet while retaining the small size of the faucet. At least the small diameter of the faucet is retained. No external valve unit or water mixer is needed which reduces the space needed to install valve-controlled / automatic faucets.
  • valve-controlled faucet and “automatic faucet” are used interchangeably in the text of the present disclosure.
  • valve part is supplied beneath the cartridge that in turn is provided inside the mixer faucet, the top side of the cartridge is free to be used to provide control inputs to the faucet.
  • user faucet control is enhanced: temperature and water flow can be controlled in a faucet that uses a valve according to the invention.
  • Previously known automatic faucets making use of magnetic valves only allow adjusting the temperature and not the flow of the water. Instead, in the art of magnetic valves, water is either turned on or turned off.
  • Alternatives to the magnetic valve include servo control of the cold and warm water supply which allows electronic control of all elements, but such control systems are expensive and will often require placement of the controls under the tabletop.
  • control cartridge and the valve being coupled are provided as a single unit for installation. Thereby, when the internal components are installed in the faucet shell in a faucet cavity, no more installation is necessary. No external valve is to be installed beneath the tabletop, for example.
  • a further benefit of the control cartridge and the valve being coupled is that the amount of assembly required by the end user is minimised.
  • a vulnerable point for incorrect installation is the connection points of water-bearing element. Since the control cartridge and valve are coupled, this connection can be carried out at the manufacturer, and water pressure tests can be performed to minimise the risk of leakage.
  • control cartridge and the valve being inserted into the cavity, they are inserted and affixed here as desired. They may protrude from the cavity to beneath the tabletop if the designer of the mixer faucet so desires. This may for example be the case for very low profile mixer faucets.
  • the invention works very well with standard ceramic disc cartridges with single stems/taps for controlling the cartridge.
  • control faucet is a mixer faucet and the control cartridge is a mixer cartridge whose bottom surface has at least a second inlet opening for receiving water to be mixed, the mixer cartridge having mixing means for mixing water received from said two inlet openings, where the outlet opening is connected to deliver mixed water.
  • the faucet further allows controlling an output water temperature.
  • the invention allows conventional control handles for the standard cartridge as well as easy flow and temperature control.
  • the control stem is adapted to receive two control inputs.
  • a first control input controls the mixing ratio between the hot and cold water inputs in order to control the tempered water temperature, while a second control input controls a constriction of the output tempered water in order to control the tempered water flow rate.
  • valve is positioned below the control cartridge. Thereby, the construction of the faucet is further improved.
  • the valve is a magnetic valve. Thereby, a useful type of valve is used.
  • the valve has a body sufficiently small to fit in a volume below said control cartridge and adjacent to said control cartridge and inside the diameter of a faucet cavity provided by a faucet shell, where the valve body is further sufficiently small to fit this volume along with said at least one water hose, preferably at least two water hoses, connected to said faucet, whereby the minimum diameter of the mixer faucet is determined by said control cartridge.
  • the faucet can be compact and installed in space limited places. Furthermore, when installed, the faucet takes up only little space.
  • the valve has a slim body that fits between two water hoses that are connected to said faucet.
  • This geometry allows the automatic faucet of the invention to distribute the water as desired while maintaining a non-obtrusive parts footprint in the faucet shell. In other words, it is possible to achieve the ends of the invention in a confined space that matches the desires of end users while being cheap and effective to produce.
  • control faucet further comprises a sensor, said sensor being adapted to transmit a sensor signal.
  • the valve is then operated based on the sensor signal.
  • the valve faucet may be operated based on sensed parameters.
  • a variety of sensor types may be used with the mixer faucet of the invention.
  • Conventional proximity or motion sensors may be used.
  • Such sensors typically rely on passive infrared or active infrared detection.
  • Other convenient sensor types can be used as well, such as touch sensors that transmit a signal when someone touches a designated area of the faucet, such as the entire faucet shell.
  • the senor is a motion sensor adapted to register motion in front of the faucet. Thereby, a user can easily activate the faucet by gesturing in a sensor field in front of the faucet.
  • the senor is an active infrared sensor.
  • a user can easily activate the faucet by gesturing in a sensor field in front of the faucet.
  • control faucet further comprises a distribution block, the distribution block providing channels to connect said outlet with a valve inlet and to connect a valve outlet with a distribution block outlet.
  • the distribution block outlet is simply an opening in the distribution block. Because distribution blocks are commonly used, providing a distribution block adapted specifically to fit between the cartridge and valve allows easy use of existing faucet designs.
  • the distribution block outlet is located in the peripheral surface of the distribution block.
  • the water distribution block is an adapter piece having a hot channel and a cold channel.
  • the hot channel has a hot inlet where a hose supplying hot water is to be attached.
  • the cold channel has a cold inlet where a hose supplying cold water is to be attached.
  • the hot channel and the cold channel then connect to the inlets on the mixer cartridge.
  • the mixer faucet has an internal diameter of 42 mm or less around the control cartridge and the valve.
  • the faucet can be made compact to meet the aesthetic needs of users.
  • the faucet is compact and can be used for various uses, as well as meeting the aesthetic needs of even more users.
  • a dual faucet has a control faucet as described.
  • the dual faucet further has a manually operated control cartridge for providing tempered water to said liquid outlet based at least substantially on the position of a control stem of said manually operated mixer cartridge.
  • a dual faucet By a dual faucet is understood a faucet that allows operating the water flow both manually and through the use of a sensor-triggered valve. This may be achieved by having two separate control cartridges within the same faucet and connected to each type of control. Alternatively, it may be achieved by having two separate control systems connected to a single control cartridge.
  • Fig. 1 is a schematic drawing of an automatic faucet 100 according to the invention.
  • the faucet is fastened to a tabletop 10, and has a hot inlet hose 112 and a cold inlet hose 114 supplying water.
  • the hot water may be provided by any convenient means, such as a dedicated heater located near to the faucet, a general hot water tank or an inline heater.
  • the automatic faucet 100 also has a control cartridge 120 with a control input means 128.
  • the control cartridge has two openings 122, 124 for receiving water of two temperatures to be mixed as well as a tempered outlet 126 for providing the mixed water.
  • the control cartridge 120 receives a first control input to control the mixing ratio of hot water and cold water to produce a tempered water of a desired temperature.
  • the control cartridge 120 is further adapted to receive a second control input through the control stem 128 to control the flow of tempered water.
  • Rotating the control stem 128 provides the first control input to control the mixing ratio of hot and cold water, while tilting the control stem 128 relative to the extension of the control stem 128 controls the amount of water that is let through the control cartridge.
  • control cartridge 120 with the described control stem is common in use with manual faucets and is a standard part, although it is not previously used with automatic faucets.
  • the control cartridge is either only adapted for controlling the flow of received liquid from at least one liquid inlet or only for mixing received liquid without changing the combined flow. In a situation where only flow is to be controlled, the control cartridge would only need one opening for receiving water from e.g. one water hose.
  • the control cartridge outlet 126 is connected to a valve inlet channel 116 that connects to a valve inlet opening 122 of a valve 130.
  • the valve 130 that is set to block the flow of water when at idle and operable with an electric signal. When the valve receives no signal otherwise, the tempered water from the control cartridge is blocked by the valve and substantially no amount of water leaves the faucet 100.
  • a sensor 140 registers the presence of something - such as the hand of a user - in front of the faucet, it transmits a signal to a processor 150.
  • the processor 150 controls the valve 130 to open it. The water flow is unblocked, and the tempered water can leave the faucet according to the setting of the control stem 128.
  • the processor 150 adjusts the outflow of water through the outlet channel 118 according to a predetermined timing pattern.
  • the electronic components - at least the valve 130, sensor 140, and processor 150 - are powered by a battery 152 that is conveniently positioned in a user-friendly location to allow changing it when the battery is exhausted. Such a location is typically below the table.
  • the circuit may be connected to a circuit of the building to prevent the need battery, as desired.
  • Fig. 2 is a schematic drawing of an automatic faucet 100 according the invention where the liquid pathway through the automatic faucet 100 is marked.
  • the automatic faucet of Fig. 2 is identical to the one described with Fig. 1.
  • Fig. 2 illustrates how the water is moved through the automatic faucet. Cold and hot water are moved through inlet hoses to the cartridge. In the cartridge, the hot and cold water are mixed according to how the control input means is adjusted. What results is tempered water that is let out of a cartridge outlet. From the cartridge, the tempered water is conducted downwards to the magnetic valve. In an inactivated state, the tempered water is blocked here. When the sensor is activated, it opens the valve and the tempered water passes through the now open valve to flow out of the faucet.
  • a small automatic faucet 100 size is achieved while allowing use of standard cartridges that take up most of the cross-sectional area of standard faucet sizes. Furthermore, because the mixing is achieved in the faucet itself, these advantages are combined with a negligible space requirement below the tabletop, whereas normal automatic faucets are constructed by mixing water and having valves beneath the table. This allows adaptation of manual faucet systems to automatic faucet systems or installation in space-limited areas in a user-friendly manner while meeting aesthetic requirements.
  • Figs. 3A-C illustrate the use of an automatic faucet according to the invention.
  • Fig. 3A illustrates an automatic faucet 100 according to the invention.
  • a standard control unit 127 is compatible with the automatic faucet 100.
  • the standard control unit engages with the control stem (not shown). Since the automatic faucet 100 is designed in an effort to allow a user to touch the control unit 129 less often than normally for a manual faucet, it is even possible to shape the control unit differently, such as with a significantly smaller protrusion 129 while still being useful.
  • control unit 127 is positioned in a constricted orientation. This orientation provides a second control input of tempered water constriction. Even if a user put a hand in front of the sensor 140, into a sensing field 146 of the automatic faucet shown in fig. 3A , the control cartridge 120 blocks the tempered water flow when the control unit 127 is thusly oriented. Thereby, the automatic faucet can be turned off easily if a user is using a sink below the faucet for something sufficiently wet or when water is not needed or desired such as when washing vegetables or scrubbing the sink itself. This is not attainable with automatic faucets of the art.
  • Fig. 3B illustrates an automatic faucet 100 according to the invention where a user has tilted the control unit 120 to release the flow of tempered water from the control cartridge 120. However, since the motion sensor 140 is not activated, it does not transmit a signal to the processor 150. Therefore, the valve 130 still blocks the tempered water that then does not flow from the automatic faucet 100 of Fig. 3B .
  • the automatic faucet 100 of Fig. 3B is ready to provide tempered water to a user who activates the motion sensor 140.
  • Fig. 3C illustrates a user washing hands 3 under an automatic faucet according to the invention.
  • the control unit 127 is in a position allowing flow through the control cartridge 120.
  • the sensor 140 transmits a signal to the processor. This opens the valve 140 and tempered water 1 flows from the automatic faucet 100 at the predetermined flowrate and temperature according to the orientation of the control unit 127 allowing the user to wash hands in the user defined tempered water 1.
  • Figs. 4-5 illustrate exemplary arrangements of components in a faucet according to the invention.
  • Fig. 4 is a cross-sectional side-view of an automatic faucet 100 according to the invention, further showing the liquid pathway of the automatic faucet 100.
  • Inlet hoses 112, 114 are connected to a distribution block 110 that is specially adapted to provide the liquid flows in the tight confines of the automatic faucet according to the invention.
  • the distribution block 110 provides liquid contact to the two inlet openings of the control cartridge 120. Washers or other liquid constriction means are used between the distribution block and control cartridge to prevent the water from moving among channels and out of the liquid conduit.
  • valve 130 When the water has been mixed in the cartridge, it is led back down to the distribution block 110 again, and from here to the valve 130.
  • the valve fits between the two inlet hoses 112, 114 for a compact form factor fluid constriction.
  • the shown valve part 130 comprises a liquid conduit. Along the path of the conduit, an electrically controlled valve blocks or allows the liquid flow. The channel then feeds the water back up to the distribution block 110 to be fed out of the automatic faucet 100.
  • the processor 150 and sensor 140 units are provided, where at least the processor 150 is integrated into the valve 130. In the shown embodiment, electrical power is fed to the components through electrical connectors 154.
  • a fluid-tight seal 111 prevents that the water passes downwards to the components below or the space beneath the faucet. Instead, the water passes upwards in a space defined between the faucet shell 101 on one side and the distribution block 110 and the control cartridge 120 on the other side.
  • Fig. 5 is an exploded view of a distribution block 110, a valve 130 and inlet hoses 112, 114.
  • the spacing of the valve 130 in the automatic faucet 100 is maybe even more clearly understood when looking at this figure.
  • control cartridges 120 are standard parts, the spacing beneath any such control cartridges is known to be taken up substantially by the inlet hoses 112, 114 as seen.
  • the valve 130 has a slim body 136 that fits between the inlet hoses 112, 114 and moves the water from a valve inlet 132 to a valve outlet 134.
  • an electronic valve house 138 that is adapted to cut off the flow of the water extends into a space next to the inlet hoses 112, 114 without obstructing them, and is built into the slim body 136.
  • the valve house 138 is located to the side. This geometry allows the automatic faucet of the invention to distribute the water as desired while maintaining a non-obtrusive parts footprint in the faucet shell. In other words, it is possible to achieve the ends of the invention in a confined space that matches the desires of end users while being cheap and effective to produce.
  • the conduit in the valve 130 is shaped as a U-loop where the valve inlet 132 and valve outlet 134 exit the body of the valve 130 on the same side.
  • the valve can take other geometries in other embodiments of the invention. It could for example be an L-loop where the valve outlet 134 is connected directly to the liquid outlet 103 of the faucet. Such an L-loop could be directed to any side of the valve 130.
  • the valve could include a longer conduit with more bends, such as an S-loop or a W-loop.
  • the disclosed invention is not limited to an exact shape of the conduit between the valve inlet 132 and the valve outlet 134.
  • the distribution block is in the example of Fig. 5 shown to have four liquid channels to be connected in pairs respectively to the inlet hoses 112, 114 and to the valve inlet 132 and valve outlet 134.
  • the number of liquid channels through the distribution block as well as their positions may be different. These channels are adapted to accommodate the number of hoses connected to the control cartridge 120 as well as the geometry of the valve 130.
  • Fig. 6 is a schematic drawing of a dual faucet 200 according to the invention.
  • the dual faucet has a water system as described with Figs. 1 and 2 , although the constructional arrangement differs due to practical and aesthetic reasons.
  • the dual faucet 200 has a hot water inlet 112 and a cold water inlet 114. Both inlets are connected to two mixer cartridges arranged in parallel.
  • the first of these mixer cartridges is an automatic mixer cartridge 120 arranged with a valve 130, processor 150 and motion sensor 140 controlling its water output as described in relation to the other figures. These parts are powered in any convenient way such as by battery 152.
  • These components are comprised in an automatic line of the dual faucet 200. When the sensor is activated and water is output through the automatic line, the water is fed to a combined outlet channel 218.
  • the dual faucet 200 further has a manual line for providing water through the faucet irrespective of the settings and activations of the automatic line.
  • the dual faucet 200 has a second mixer cartridge being a manual mixer cartridge 220 forming part of this manual line.
  • tempered water is the output from the manual line of the dual faucet 200 and let into the combined outlet channel 218.
  • a user is enabled to get a glass of cold water by controlling the manually controlled cartridge 220 of the dual faucet 200 without changing the adjustment of the automatic mixer cartridge 120, which, in the given example, could be adjusted to provide warm water for washing hands.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Domestic Plumbing Installations (AREA)
EP19173184.3A 2019-05-07 2019-05-07 Automatischer wasserhahn Withdrawn EP3736387A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19173184.3A EP3736387A1 (de) 2019-05-07 2019-05-07 Automatischer wasserhahn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19173184.3A EP3736387A1 (de) 2019-05-07 2019-05-07 Automatischer wasserhahn

Publications (1)

Publication Number Publication Date
EP3736387A1 true EP3736387A1 (de) 2020-11-11

Family

ID=66483833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19173184.3A Withdrawn EP3736387A1 (de) 2019-05-07 2019-05-07 Automatischer wasserhahn

Country Status (1)

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EP (1) EP3736387A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003048463A2 (en) * 2001-12-04 2003-06-12 Arichell Technologies, Inc. Electronic faucets for long-term operation
WO2003093588A1 (en) * 2002-04-29 2003-11-13 Kerox Multipolár II. Ipari és Kereskedelmi Kft. Arrangement for one-armed batteries provided with electromagnetic shut-off valve
WO2006076149A1 (en) * 2005-01-13 2006-07-20 American Standard International Inc. Proximity faucet having selective automatic and manual modes
US20090094740A1 (en) * 2007-10-12 2009-04-16 Sung-Man Ji Automatic water faucet built-in with hot and cold water control valve
EP3276090A1 (de) * 2016-07-27 2018-01-31 BLANCO GmbH + Co KG Armatur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003048463A2 (en) * 2001-12-04 2003-06-12 Arichell Technologies, Inc. Electronic faucets for long-term operation
WO2003093588A1 (en) * 2002-04-29 2003-11-13 Kerox Multipolár II. Ipari és Kereskedelmi Kft. Arrangement for one-armed batteries provided with electromagnetic shut-off valve
WO2006076149A1 (en) * 2005-01-13 2006-07-20 American Standard International Inc. Proximity faucet having selective automatic and manual modes
US20090094740A1 (en) * 2007-10-12 2009-04-16 Sung-Man Ji Automatic water faucet built-in with hot and cold water control valve
EP3276090A1 (de) * 2016-07-27 2018-01-31 BLANCO GmbH + Co KG Armatur

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