Compensating liquid delivery system and method
First Claim
1. A device for delivering liquid via a flow channel comprising:
- a flow channel;
a memory having a stored value indicative of a flow characteristic of the flow channel;
a controller that generates a flow control signal based on the stored value; and
a valve responsive to the flow control signal adapted to control flow of the liquid through the flow channel.
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Accused Products
Abstract
A device and method for accurate delivery of a liquid is described. The device comprises a flow channel through which the liquid flows. During manufacture or at some other point prior to the delivery of the liquid, the flow channel is characterized in terms of one or more properties of flow of a liquid through the channel. This characterization is stored in such a way that the flow channel characterization is available to the liquid delivery device at time of use. At time of use, the liquid delivery system reads the stored flow channel characterization and uses the stored flow channel characterization for safe and accurate delivery of the liquid.
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Citations
59 Claims
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1. A device for delivering liquid via a flow channel comprising:
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a flow channel;
a memory having a stored value indicative of a flow characteristic of the flow channel;
a controller that generates a flow control signal based on the stored value; and
a valve responsive to the flow control signal adapted to control flow of the liquid through the flow channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of manufacturing a liquid delivery device, comprising:
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passing a liquid through a flow channel;
measuring flow-related data of the flow of the liquid through the flow channel;
determining a value of a flow characteristic of the flow channel based on the flow-related data; and
storing at least one of the value of the flow characteristic and a value based on the flow characteristic in a memory of the liquid delivery device. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of delivering a liquid via a flow channel, the method comprising:
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measuring flow-related data of the liquid flowing through a flow channel;
receiving data from a memory having a flow characteristic of the flow channel stored therein;
determining a value of the flow of the liquid based on the flow-related data and the stored flow characteristic, and controlling a valve based on the calculated value of flow to control the flow of liquid through the flow channel.
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28. A method of delivering a liquid via a flow channel at a desired flow rate, the method comprising:
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measuring flow-related data of the liquid passing through the flow channel;
receiving data from a memory having a flow characteristic of the flow channel stored therein;
determining a value of the flow rate of the liquid based on the flow-related data and the stored characteristic value;
comparing the determined value of the flow rate to the desired flow rate; and
controlling a valve to achieve the desired flow rate.
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29. A method of delivering a selected liquid via a flow channel at a desired flow rate, the method comprising:
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receiving data from a memory having a flow characteristic of the flow channel stored therein;
providing viscosity information of the selected liquid;
providing information related to the pressure causing the selected liquid to flow along the flow channel;
determining a value of the flow rate of the selected liquid based on the stored flow characteristic, the viscosity information and the pressure information;
comparing the determined flow rate to the desired flow rate; and
controlling a valve to achieve the desired flow rate. - View Dependent Claims (30)
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31. A device for delivering liquid via a flow channel, the device comprising:
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a flow channel; and
a memory having a stored value indicative of a flow characteristic of the flow channel;
whereinthe device is adapted to at least one of transfer the stored value from the memory and permit reading of the stored value to enable the volumetric flow rate of a liquid flowing through the flow channel to be determined. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A device for controlling the delivery of liquid via a flow channel, the device comprising:
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a valve adapted to control the flow of fluid through a fluid conduit in fluid communication with a flow channel; and
at least one of a data receiver adapted to receive a value indicative of a flow characteristic of the flow channel;
whereinthe device is adapted to determine the volumetric flow rate of a liquid flowing through the flow channel utilizing the received value; and
wherein the device is adapted to automatically control the flow of fluid through the flow channel based on the determined volumetric flow rate. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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Specification