# US 11,898,301 B2 · Dryer appliance and variable additive dispensing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,301 B2 - Document ID: US11898301B2 - Status: Granted - Kind: B2 - Application number: 17/694,997 - Filed: 2022-03-15 - Published: 2023-09-21 - Granted: 2024-02-13 - Earliest claimed: 2022-03-15 - Assignees: Haier US Appliance Solutions, Inc. - Applicants: Haier US Appliance Solutions, Inc. - Inventors: Joshua Reeves; Sean Simpson - Web page: https://patentgrep.com/patent/US11898301B2 ## CPC - D06F 58/44: of conditioning or finishing, e.g. for smoothing or removing creases - D06F 58/203: {Laundry conditioning arrangements} - D06F 2103/04: Quantity, e.g. weight or variation of weight - D06F 2103/08: Humidity - D06F 2103/38: Time, e.g. duration - D06F 2105/38: Conditioning or finishing, e.g. control of perfume injection - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES ## Abstract A dryer appliance may include a cabinet, a drum, an additive dispensing assembly, and a controller. The drum may be rotatably mounted within the cabinet. The drum may define a drying chamber for the receipt of clothes for drying. The additive dispensing assembly may be positioned within the cabinet and configured to selectively provide an additive to the drying chamber. The controller may be in operable communication with the additive dispensing assembly. The controller may be configured to initiate a drying operation. The drying operation may include initiating a dry cycle, detecting a static event during the dry cycle, and directing a supplemental dispensing action of a dryer additive in response to the detected static event. ## Claims ### Claim 1 A dryer appliance comprising: a cabinet; a drum rotatably mounted within the cabinet, the drum defining a drying chamber for the receipt of clothes for drying; an additive dispensing assembly positioned within the cabinet and configured to selectively provide an additive to the drying chamber; a moisture sensor mounted within the dryer appliance in communication with the drying chamber; and a controller in operable communication with the additive dispensing assembly and the moisture sensor, the controller being configured to initiate a drying operation comprising initiating a dry cycle, detecting a static event during the dry cycle, determining the static event comprising determining expiration of a predetermined time period and detecting a diminished moisture signal at the moisture sensor following expiration of the predetermined time period, and directing a supplemental dispensing action of a dryer additive in response to the detected static event. ### Claim 2 (depends on 1) The dryer appliance of claim 1, wherein initiating the dry cycle further comprises determining, prior to detecting the static event, a load size, and directing an initial dispensing action of a dryer additive based on the determined load size. ### Claim 3 (depends on 2) The dryer appliance of claim 2, wherein directing the initial dispensing action comprises directing a variable amount of the dryer additive to the drying chamber corresponding to the determined load size. ### Claim 4 (depends on 1) The dryer appliance of claim 1, wherein detecting the static event during the dry cycle comprises detecting an elevated static level within the drying chamber. ### Claim 5 (depends on 1) The dryer appliance of claim 1, wherein detecting the static event during the dry cycle comprises detecting, prior to detecting the diminished moisture signal, a damp-condition moisture signal at the moisture sensor within the drying chamber. ### Claim 6 (depends on 1) The dryer appliance of claim 1, wherein the supplemental dispensing action comprises a dispensing a predetermined indexed amount of the dryer additive. ### Claim 7 (depends on 1) The dryer appliance of claim 1, wherein the supplemental dispensing action comprises a dispensing a variable amount of the dryer additive. ### Claim 8 A dryer appliance comprising: a cabinet; a drum rotatably mounted within the cabinet, the drum defining a drying chamber for the receipt of clothes for drying; an additive supply mounted to the cabinet to selectively provide an additive to the drying chamber, the additive supply comprising an additive reservoir and a nozzle downstream from the additive reservoir and directed to the drying chamber for discharging the additive therein; and a moisture sensor mounted within the dryer appliance in communication with the drying chamber; and a controller in operable communication with the additive dispensing assembly and the moisture sensor, the controller being configured to initiate a drying operation comprising initiating a dry cycle, detecting a static event during the dry cycle, determining the static event comprising determining expiration of a predetermined time period and detecting a diminished moisture signal at the moisture sensor following expiration of the predetermined time period, and directing a supplemental dispensing action of a dryer additive in response to the detected static event. ### Claim 9 (depends on 8) The dryer appliance of claim 8, wherein initiating the dry cycle further comprises determining, prior to detecting the static event, a load size, and directing an initial dispensing action of a dryer additive based on the determined load size. ### Claim 10 (depends on 9) The dryer appliance of claim 9, wherein directing the initial dispensing action comprises directing a variable amount of the dryer additive to the drying chamber corresponding to the determined load size. ### Claim 11 (depends on 8) The dryer appliance of claim 8, wherein detecting the static event during the dry cycle comprises detecting an elevated static level within the drying chamber. ### Claim 12 (depends on 8) The dryer appliance of claim 8, wherein detecting the static event during the dry cycle comprises detecting, prior to detecting the diminished moisture signal, a damp-condition moisture signal at the moisture sensor within the drying chamber. ### Claim 13 (depends on 8) The dryer appliance of claim 8, wherein the supplemental dispensing action comprises a dispensing a predetermined indexed amount of the dryer additive. ### Claim 14 (depends on 8) The dryer appliance of claim 8, wherein the supplemental dispensing action comprises a dispensing a variable amount of the dryer additive. ### Claim 15 A dryer appliance comprising: a cabinet; a drum rotatably mounted within the cabinet, the drum defining a drying chamber for the receipt of clothes for drying; an additive supply mounted to the cabinet to selectively provide an additive to the drying chamber, the additive supply comprising an additive reservoir and a nozzle downstream from the additive reservoir and directed to the drying chamber for discharging the additive therein; and a moisture sensor mounted within the dryer appliance in communication with the drying chamber; and a controller in operable communication with the additive dispensing assembly and the moisture sensor, the controller being configured to initiate a drying operation comprising initiating a dry cycle, detecting a static event during the dry cycle, determining the static event comprising determining expiration of a predetermined time period and detecting an elevated static level within the drying chamber following expiration of the predetermined time period, and directing a supplemental dispensing action of a dryer additive in response to the detected static event. ### Claim 16 (depends on 15) The dryer appliance of claim 15, wherein initiating the dry cycle further comprises determining, prior to detecting the static event, a load size, and directing an initial dispensing action of a dryer additive based on the determined load size. ### Claim 17 (depends on 16) The dryer appliance of claim 16, wherein directing the initial dispensing action comprises directing a variable amount of the dryer additive to the drying chamber corresponding to the determined load size. ### Claim 18 (depends on 15) The dryer appliance of claim 15, wherein detecting the static event during the dry cycle comprises detecting, prior to detecting an elevated static level within the drying chamber, a damp-condition moisture signal at the moisture sensor within the drying chamber.