Flushing system for a safety system
AssigneeMagarl, LLC
InventorsRobert B. Eveleigh, Thomas R. Baker, Cameron West
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for improving emergency wash systems. Various embodiments pertain to compact, low flow emergency eyewash systems that provide tepid water at low flow rates. Still further embodiments pertain to emergency washing systems that are adapted and configured to reduce the exposure of users to Legionnaire's Disease with washing system features that permit quick, efficient, high flow rate flushing of the plumbing providing water to the washing system. Still further embodiments pertain to emergency eyewash systems that provide tepid water from a thermostatically controlled mixing valve that has a multi-function body.
Claims27
An emergency washing system in fluid communication with a source of water, comprising:
- a shutoff valve receiving water from the source and providing the water to an outlet, said valve outlet having a first quick connection feature at the outlet;
- an emergency eyewash housing having an inlet receiving water from said valve outlet and having an eyewash outlet, said eyewash housing including a flow control valve adapted and configured to provide a flow of water at a substantially constant rate from said inlet to said eyewash outlet over a range of inlet pressures, said eyewash housing inlet having a second quick connection feature adapted and configured to easily and quickly connect to said first quick connection feature and form a water-tight connection;
- a plurality of upwardly directed spray nozzles, said nozzles receiving water from the eyewash outlet and being adapted and configured to spray the water upwards in a pattern acceptable to wash the eyes of a user standing next to said eyewash housing;
- and
- a flush housing having an inlet adapted and configured to receive water from said valve outlet and a flowpath leading to a flush outlet, the flowpath being substantially unobstructed to the flow of water, said flush housing inlet having a third quick connection feature substantially identical to said second connection feature;
- wherein said system operates in a washing mode expelling water at the substantially constant rate with said eyewash housing connected to said valve or in a flushing mode expelling water at a substantially higher rate than the constant rate with said flush housing connected to said valve.
An emergency washing system in fluid communication with a source of pressurized water, comprising:
- an electric water heater receiving water from the pressurized source and adapted and configured to provide heated water;
- a thermostatically controlled mixing assembly including a cartridge valve with a thermostat coupled to a movable valve member and having first and second variable area openings, said mixing assembly having a hot water inlet receiving heated water from said water heater and providing the heated water to the first variable opening, a cold water inlet receiving water from the pressurized source and providing the pressurized water to the second variable opening, the received hot water and received cold water being mixed by said cartridge valve, said movable valve member being biased to close the first variable opening if the thermostat fails;
- a flow control valve receiving mixed water from said mixing assembly, said flow control valve being adapted and configured to limit the flow of mixed water therethrough to a substantially constant flow less than about two gallons per minute and
- an emergency eyewash assembly including a housing having a flow passage receiving mixed flow from said flow control valve, a plurality of upwardly directed spray apertures, and an internal chamber between the flow passage and the spray nozzles, said internal chamber being adapted and configured to provide mixed water to each of the plurality of spray apertures in parallel.
An emergency washing system in fluid communication with a water source and a water return, comprising:
- an emergency eyewash housing having an inlet for receiving water and at least one upwardly directed spray nozzle;
- a catch basin located beneath said spray nozzle and having a draining aperture for receiving water sprayed from said nozzle;
- a thermostatically controlled mixing valve including a body having a first water compartment and a second water compartment, said first and second compartments being separated by a support aperture therebetween;
- said first water compartment including an inlet for hot water and an inlet for cold water, both inlets being in fluid communication with a thermostatic cartridge valve, said first water compartment including an outlet receiving mixed water from said cartridge valve;
- said second water compartment including a water return port for receiving water from the draining aperture and a drain for providing the received water to the water return;
- and
- a support arm having two ends with one end structurally coupled to the support aperture and the other end structurally coupled to said catch basin.
An emergency washing system in fluid communication with a source of water and a water return, comprising:
- a multi-flowpath directional valve receiving water from the source and including an internal, movable valve member capable of directing the water to a first outlet and a second outlet;
- a shutoff valve in fluid communication with from the first outlet and providing the water to a shutoff valve outlet;
- an emergency eyewash housing having an inlet adapted and configured for fluid communication with said shutoff valve outlet and having a plurality of upwardly directed spray nozzles adapted and configured to spray the water upwards in a pattern acceptable to wash the eyes of a user standing next to said eyewash housing;
- and
- a draining conduit in fluid communication with the second outlet, said draining conduit being in fluid communication with the water return;
- wherein said movable valve member can be moved to a first washing position in which water is directed to the first outlet and the second outlet is shut off, or to a second flushing position in which the second outlet is open.
Dependencies are inferred from the claim text.