# US 2013/0152310 A1 · Method and apparatus for controlling the liquid filling in a laundry treating appliance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0152310 A1 - Document ID: US20130152310A1 - Status: Published application - Kind: A1 - Application number: 13/327,916 - Filed: 2011-12-16 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Assignees: Whirlpool Corporation - Inventors: DONALD E. ERICKSON - Web page: https://patentgrep.com/patent/US20130152310A1 ## CPC - D06F 33/34: of water filling - D06F 39/087: {Water level measuring or regulating devices} - D06F 39/088: {Liquid supply arrangements} - D06F 2101/00: User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers - D06F 2103/18: Washing liquid level - D06F 2103/24: Spin speed; Drum movements - D06F 2105/02: Water supply - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES ## Abstract Disclosed is a method of operating a horizontal axis laundry treating appliance to correct for an error in sensing an amount of supplied liquid caused by a determined change in the attitude of an associated wash tub. ## Claims ### Claim 1 A method of operating a laundry treating appliance having a tub defining an interior, a drum defining a treating chamber for receiving laundry for treatment, with the drum located within the interior and rotatable about a rotational axis, and configured to automatically treat laundry according to at least one cycle of operation, the method comprising: determining an amount of liquid to be supplied to at least one of the interior and the treating chamber for the at least one cycle of operation; supplying liquid to at least one of the interior and the treating chamber; sensing the amount of supplied liquid using a sensor operably coupled to the tub; determining a change in the attitude of the tub during the supplying of the liquid; and correcting for an error in sensing the amount of supplied liquid caused by the determined change in the attitude of the tub. ### Claim 2 (depends on 1) The method of claim 1 wherein determining the amount of liquid comprises receiving a user input representing a liquid amount for the at least one cycle of operation. ### Claim 3 (depends on 1) The method of claim 1 wherein determining the amount of liquid comprises the laundry treating appliance automatically determining the amount of liquid. ### Claim 4 (depends on 1) The method of claim 1 wherein supplying liquid comprises supplying liquid directly to the treating chamber. ### Claim 5 (depends on 1) The method of claim 1 wherein supplying liquid comprises supplying liquid directly to the interior. ### Claim 6 (depends on 1) The method of claim 1 wherein sensing the amount of supplied liquid comprises sensing the level of liquid in the interior. ### Claim 7 (depends on 6) The method of claim 6 wherein sensing the level of liquid comprises sensing the level of liquid within a sump of the tub. ### Claim 8 (depends on 6) The method of claim 6 wherein sensing the level of liquid comprises sensing the pressure head of the liquid relative to a location in the tub. ### Claim 9 (depends on 8) The method of claim 8 wherein determining a change in the attitude comprises determining a change in the attitude that alters the pressure head of the liquid. ### Claim 10 (depends on 9) The method of claim 9 wherein determining a change in the attitude comprises determining a change in pitch of the rotational axis. ### Claim 11 (depends on 10) The method of claim 10 wherein determining a change in the attitude comprises determining a change in roll of the tub about the rotational axis. ### Claim 12 (depends on 10) The method of claim 10 wherein correcting for an error in sensing comprises adjusting the sensed level of the liquid. ### Claim 13 (depends on 12) The method of claim 12 wherein adjusting the sensed level of liquid comprises providing a new liquid level that equates with the determined liquid amount for the change in attitude. ### Claim 14 (depends on 13) The method of claim 13 wherein adjusting the sensed level of liquid comprises providing a correction factor for the sensed level of liquid. ### Claim 15 (depends on 1) The method of claim 1 wherein determining a change in the attitude comprises determining a change in the attitude that alters the pressure head of the liquid with respect to a reference point in the tub. ### Claim 16 (depends on 1) The method of claim 1 wherein determining a change in the attitude comprises determining a change in at least one of pitch of the rotational axis and roll about the rotational axis. ### Claim 17 (depends on 1) The method of claim 1 wherein determining a change in the attitude comprises determining a change in both pitch of the rotational axis and roll about the rotational axis. ### Claim 18 (depends on 1) The method of claim 1 wherein correcting for an error in the sensing comprises adjusting the sensed amount of the liquid. ### Claim 19 (depends on 18) The method of claim 18 wherein adjusting the sensed amount of liquid comprises providing a new liquid amount that equates with the determined liquid amount for the change in attitude. ### Claim 20 (depends on 18) The method of claim 18 wherein adjusting the sensed amount of liquid comprises providing a correction factor for the sensed amount of liquid. ### Claim 21 A laundry treating appliance configured to automatically treat laundry according to at least one cycle of operation, comprising: a tub defining an interior; a drum defining a treating chamber for receiving laundry for treatment, with the drum located within the interior and rotatable about a rotational axis; a liquid supply valve selectively providing liquid to at least one of the interior and the treating chamber; a liquid level sensor providing a level output indicative of the level of the liquid in the tub; an attitude sensor providing an attitude output indicative of a change in the attitude of the tub; and a controller receiving the level output and the attitude output and operably coupled to the liquid supply valve to control the amount of liquid supplied for the at least one cycle of operation based on the level of liquid indicated by the level output and using the attitude output to correct for an error in the level output induced by a change in attitude. ### Claim 22 (depends on 21) The laundry treating appliance of claim 21 wherein the liquid level sensor comprises a pressure sensor sensing a pressure head of liquid in the tub relative to a reference point in the tub. ### Claim 23 (depends on 21) The laundry treating appliance of claim 21 wherein the rotational axis is at least one of a horizontal axis and a vertical axis. ### Claim 24 (depends on 21) The laundry treating appliance of claim 21 wherein the attitude output is indicative of a change in at least one of pitch of the rotational axis and roll about the rotational axis.