US 12,305,917 B1
Method for determining drying of food waste disposer
Zhimin Liu, Dongguan (CN); Dongyuan Lin, Dongguan (CN); Tiejiang Luo, Dongguan (CN); and Shuo Huang, Dongguan (CN)
Assigned to Bigland Electric Appliance Co., Ltd., Dongguan (CN)
Filed by Bigland Electric Appliance Co., Ltd., Guangdong (CN)
Filed on Jan. 8, 2025, as Appl. No. 19/013,114.
Claims priority of application No. 202411483912.9 (CN), filed on Oct. 23, 2024.
Int. Cl. F26B 25/22 (2006.01); E03C 1/266 (2006.01); G05D 22/00 (2006.01)
CPC F26B 25/22 (2013.01) [G05D 22/00 (2013.01); E03C 1/2665 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for determining a drying of a food waste disposer comprising steps of:
saving a comparison table of a pressure temperature of a saturated water vapor in a control unit of the food waste disposer, wherein multiple pressure values of the saturated water vapor corresponding to different temperatures under a standard atmospheric pressure condition are provided in the comparison table of the pressure temperature of the saturated water vapor;
starting drying process, wherein at a detection point in a manifold or an air duct of the food waste disposer for exhausting air flow, the control unit dries contents of a bucket through a drying device, and the control unit dries the contents of the bucket in a real time continuously by setting a detection element at the detection point to detect a temperature and a relative humidity of the detection point, wherein the control unit simultaneously records a temperature T0 and a relative humidity U0 detected by the detection element when starting the drying process;
calculating, wherein after going through an initial heating step and an evaporation step, the relative humidity of the detection point begins to decrease slowly, wherein when the control unit detects that a current relative humidity of the detection point is equal to or less than 80%, the control unit records a current detected temperature T1 and a current relative humidity U1, then the control unit looks up the comparison table of the pressure temperature of the saturated water vapor to acquire a saturated water vapor pressure ec0 corresponding to a temperature T0 and a saturated water vapor pressure ec1 corresponding to the current detected temperature T1, and the control unit calculates a current target humidity value Ub according to a following calculation formula
Ub=ec0/ec1×U0+a, wherein a is 1% to 10%; and
judging automatically, wherein after calculating the current target humidity value Ub, the control unit compares the current relative humidity U1 with the current target humidity value Ub and automatically determines a drying status of the food waste disposer and controls a working status of the drying device based on a comparison result;
wherein when the comparison result is U1>Ub, the control unit automatically determines a drying has not been completed, and the control unit controls the drying device to continue the drying;
wherein when the comparison result is U1<Ub, the control unit automatically determines the drying is completed, and the control unit controls the drying device to stop the drying.