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US 8,944,343 B2Granted
Spraying system with flow sensing and monitoring device
AssigneeSpraying Systems Co.
InventorsJames Cesak, Joshuah DeVoll
Life of this patent
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Abstract
A liquid flow monitoring device for monitoring the supply of liquid to a spray nozzle including a deflectable check valve in a liquid supply passage to the spray nozzle, a light sensing device having a light emitter and a light receiver disposed on opposite sides of the check valve, the check valve being deflectable into at least partially obstructing relation to a light beam directed from the light emitter to the light receiver as an incident to liquid flow through the monitoring device to the spray nozzle, and a control system for receiving signals from the sensing device.
Claims14
A spraying system comprising:
- a spray device for generating and directing a liquid spray;
- a liquid supply passage for directing liquid to the spray device;
- a liquid flow monitoring device for monitoring liquid flow through said spray device;
- said liquid supply passage defining a monitoring orifice through which at least a portion of the liquid supplied to said spray device passes;
- a membrane for closing said monitoring orifice when liquid is not passing through said liquid supply passage to said spray device and being deflectable away from said monitoring orifice as an incident to liquid flow through said liquid supply passage and monitoring orifice to said spray device;
- a sensing device for sensing the deflection of said membrane away from said monitoring orifice as an incident to liquid flow through said liquid supply passage and monitoring orifice to said spray device, said sensing device including a light emitter on one side of said monitoring orifice for emitting a light beam and a light receiver on an opposite side of said monitoring orifice for receiving a light beam emitted by said emitter, and said membrane being deflectable in response to liquid flow through said monitoring orifice into partially obstructing relation to a light beam directed from said light emitter to said light receiver in relation to the rate of liquid flow through said monitoring orifice;
- and
- a control for monitoring the rate of flow through said liquid passage and monitoring orifice in relation to the degree of deflection of said membrane into partially obstructing relation to said light beam emitted from said light emitter.
5 more elements
A spraying system comprising:
- a spray device for generating and directing a liquid spray;
- a liquid supply passage for directing liquid to the spray device;
- a liquid flow monitoring device for monitoring liquid flow through said spray device;
- said liquid flow monitoring device including an orifice member in said liquid supply passage defining a monitoring orifice through which at least a portion of the liquid supplied to said spray device passes;
- said membrane having a portion fixed to a downstream side of said orifice member and a deflectable portion that is deflectable into at least partially obstructing relation to a light beam directed from said light emitter to said light receiver as an incident to passage of liquid through the monitoring orifice;
- a sensing device for sensing the deflection of the membrane away from said monitoring orifice as an incident to liquid flow through said liquid supply passage and monitoring orifice to said spray device;
- said sensing device including a light sensing device having a light emitter on one side of said monitoring orifice for emitting a light beam and a light receiver on an opposite side of said monitoring orifice for receiving a light beam emitted by said emitter, said membrane being deflectable into at least partial obstructing relation to a light beam directed from said light emitter upon deflection of the membrane as an incident to the liquid flow through said monitoring orifice to said spray device;
- and
- a control coupled to said sensing device for monitoring the flow of liquid through said liquid passage.
6 more elements
Dependencies are inferred from the claim text.