Patent Application
20130255798
The application pertains to water leakage detectors. More particularly, the application pertains to such detectors which are easily connectable to flexible water hoses, and, can be coupled together to monitor leakage from hot and cold supplies.
Household property losses and damage arising from water leak/flood events caused by domestic water supplies can cause great economic harm. Common sources of leak/flood events include flexible hoses typically supplying water-using appliances (including but not limited to washing machines, dishwashers, refrigerators, etc.) Insured losses due to burst flexible water supply hoses of the type commonly used with washing machines, dishwashers, automatic icemakers, etc. are documented to exceed $100 M per year.
Automatic electromechanical methods for detecting flooding events and effecting shutoff of domestic water supply are well known to the trade. However, installation of said methods is typically complex and expensive, and invariably requires the services of at least one and potentially more professions (including but not limited to licensed plumbers, licensed electricians, licensed low-voltage installation contractors, etc.).
Therefore there is a need for an effective automatic water shutoff valve which can be reliably installed by an untrained installer or a homeowner, and which does NOT require installation by a tradesman (licensed plumber, steamfitter, etc.).
While disclosed embodiments can take many different forms, specific embodiments hereof are shown in the drawings and will be described herein in detail with the understanding that the present disclosure is to be considered as an exemplification of the principles hereof, as well as the best mode of practicing same, and is not intended to limit the claims hereof to the specific embodiment illustrated.
Embodiments described herein include several configurations that provide effective water leak/flood detection, effective communication of the detected problem, and effective control of the problem without human intervention. In addition, and advantageously, embodiments are configured so as to not require the services of a licensed professional plumber or licensed electrician to perform the installation, thereby permitting more widespread and more cost effective adoption.
Embodiments hereof in one aspect detect flood conditions, shut off the malfunctioning water branch, and communicate to a premises alarm communication device or home automation system via wireless link. In another aspect, the devices can be powered by batteries, and can include circuitry to detect and communicate low-battery conditions prior to malfunction, and include a “fail-safe” process to shut off the water branch supply prior to battery failure.
In another aspect, water detection and shutoff units can include in a single unit, which for example has, at the “Inflow” end, and a spin-on female pipe connection such as a three-quarter inch hose bib collared connector, as commonly known in the North American region, or, a spin-on connector specific to the product market region and/or application. At the “Outflow” end, the unit can have a spin-on male connector such as a three-quarter inch male hose bib connector, as commonly known in the North American region, or a spin-on connector specific to the product market region and/or application.
In yet another aspect, such units can also include, a battery-powered powered shutoff valve. Representative valves include, motorized ball valves, or, solenoid valves.
A battery-powered water presence detector can be included, for example, commercially available detection circuitry such as in Honeywell Model 5821. A battery powered transmitter, which incorporates any commonly known wireless transmission protocol, including but not limited to any FCC Part 15 service such as the Honeywell 5800 format; or the 802.11 protocol.
In accordance herewith, a method to connect to external water-sensing devices, using either wired or wireless communications, can include, a method to link multiple devices together, including but not limited to applications where valves would be used in pairs, such as with “hot” and “cold” water supply lines. Low-battery conditions and/or any of a variety of maintenance conditions can be detected and automatically reported. Further, a wireless receiver and/or associated circuitry for remote wired or wireless control of the valve can be incorporated.
Each of the detectors D1, D2 has an external housing 12-1, 12-2. The housing carries a pair of connectors 14a,b and 16a,b. Connectors 14a, 16a correspond to fluid, such as water, inflow connectors which are coupled to a source such as W1. The water can be carried to a respective detector, such as D1 in an inflow conduit C1, for example a flexible hose. Water can be carried from the detector D1, via an outflow conduct, another hose, C2 and delivered to a load, such as an appliance or other piece of equipment which utilizes water.
Those of skill will understand that the connector elements, 14a,b and 16a,b are illustrated as standard hose connectors used with flexible hose. The hoses can be easily, and, manually attached to the respective detector, such as D1, D2.
Each of the detectors, as best seen relative to D2, includes a motorized ball valve, or a solenoid valve, without limitation, such as valve 20. Valve is coupled between respective connectors 16a,b and can block or permit a fluid flow through the respective detector Di.
The detectors include circuitry, generally indicated at 22 to implement the above described functionality. Circuitry 22 can include water, for flood detection circuitry 22a, a wireless transmitter, or transceiver 22b, and control logic, or control circuits 22c. The circuits 22c can be implemented, at least in part with a programmable processor 22d and executable control software 22e.
Water sensing circuitry can also be connected to moisture, or water detection sensors or points, generally indicated at 26. Such sensors extend from the respective housing, such as 12-2, via flexible conductors 26a. When the detector, such as D2 has been installed, the sensors 26 can be manually located as locations where water or moisture might be present due to a leak. Signals from the sensors 26-1, 26-2, for example, coupled to circuitry such as 22a in the associated housing, can indicate the presence of unwanted water or moisture in the region R1, to R2.
Indicators of the signals from sensors 26 can be coupled from circuitry 22a to the control circuits 22c and processed, as would be understood by those of skill in the art, to determine if moisture or water has been sensed in the region R1. If so, the control circuits can cause the valve 20 to change state and go from an open condition to a closed condition halting a flow of fluid through the valve 20, and if there has been a ruptured pipe or hose, halting a flow of water into the region R1.
Detector D2 can communicate, via conductors 30, an alarm indicating signal to detector D1. In response to the signal from D2, detector D1 can close its respective valve to further halt any inflow into the region R1.
Detector D2 can also transmit, via transmitter 22b, an alarm indicating signal, or message to a displaced monitoring system S, best seen in
The detectors Di can communicate directly with one another, via for example conductors 30, or can communicate wirelessly, sending messages Mi, to the system S. As those of skill will understand, other types of detectors such as security related (position, motion, PIR) detectors, or ambient condition, (gas, fire) detectors can be incorporated into system S without limitation
In summary, units such as Di, as discussed above, are modular and flexible and can be used as standalone devices, or may be linked to additional structures, such as Hot/Cold supply lines. They can be fitted with commonly-used threaded water connectors or, they can be fitted with any type of connectors commonly known to the trade.
Such units can communicate with wireless-enabled alarm detection and communication systems of a type as would be known to those of skill in the art in monitoring regions of residences, or commercial facilities. Such systems, such as the system S would be capable of detecting and communicating detected water leak/floods, and detecting/communicating non-emergency status information (low battery, etc.) to household residents or individuals working in a monitored region.
Additionally, such systems could be programmed to actuate other wireless automated shutoff devices under specific conditions. For example, all wireless valves can be shut off throughout the protected premises based on any detected leak. Such systems could also be programmed to actuate one, some, or all wireless automated shutoff devices based on a remote command using any commonly available remote interactive services protocol
Methods of installation include, disconnecting a water supply hose for an appliance at the supply valve of the appliance. An inflow end of a modular unit in accordance herewith is threaded onto the supply valve. The water supply hose is threaded onto “outflow” end of the modular unit. External water sensor probes are connected to the modular unit. External water sensing probes are placed as to most efficiently detect potential leaks given the local environment. If desired, pairs of such devices are installed as above, and optionally interconnected. In instances where a wireless monitoring system is available, the units would be enrolled, or otherwise made known to the system as would be understood by those of skill in the art.
From the foregoing, it will be observed that numerous variations and modifications may be effected without departing from the spirit and scope of the invention. It is to be understood that no limitation with respect to the specific apparatus illustrated herein is intended or should be inferred. It is, of course, intended to cover by the appended claims all such modifications as fall within the scope of the claims.
Further, logic flows depicted in the figures do not require the particular order shown, or sequential order, to achieve desirable results. Other steps may be provided, or steps may be eliminated, from the described flows, and other components may be add to, or removed from the described embodiments.
