Controller of automatic washer with sprinkling pretreatment function

Application Number: 00118898
Application Date: 2000.06.22
Publication Number: 1278568
Publication Date: 2001.01.03
Priority Information: 1999/6/22 US 09/338,213
International: D06F33/02
Applicant(s) Name: Whirlpool Corp.
Inventor(s) Name: K. N. Huihar;J. W. Juler;R. J. Pinkervsgi
Patent Agency Code: 31100
Patent Agent: zhang minhua
Abstract This invention relates a control for an automatic washer incorporating a spray pretreatment or stain care cycle. In order to manage the occurrence of the condition of suds lock, the state of the washing machine related to the suds lock condition during spray pretreatment is determined by one or more of a number of methods. With this information concerning the state of the spray pretreatment process, the occurrence of suds lock can be ascertained and the cycle can be controlled accordingly to minimize negative effects resulting from a prolonged suds lock condition. Additionally, with certain information related to the occurrence of suds lock, steps can be taken during the spray pretreatment portion of the cycle to avoid the condition of suds lock altogether. Using the same primary process for measuring suds lock, load size can also be ascertained which can also be used to control the washing cycle.