Abstract: A mattress care device includes two vertically moving frames that are moved upward from opposite side walls of a bed frame and then a sanitary module is moved along the two vertically moving frames to perform the cleaning of a mattress, and when the cleaning of the mattress is not performed, the sanitary module is stored in a storage part while the two vertically moving frames are moved downward so that the sanitary module is stored in a location hidden from a user of a bed. Accordingly, discomfort caused by exposure of the sanitary module can be prevented.

Abstract: The present disclosure provides a mattress care device that may be stored in a hidden state within a bed frame without being exposed to the outside when not in use, and a lift operation part positioned under the mattress for raising the mattress during a sterilization and cleaning of the mattress surface and for lowering the mattress to an initial position.

Abstract: A mattress care device includes a moving module that is moved in the longitudinal direction of a mattress and a cleaning module that is installed at the moving module and moved in the width direction of the mattress. In particular, the connection portions between two side frames of the moving module and a top frame are rotatable so that the moving module can be stably moved forward and backward.

Abstract: A washing and rinsing method in a washer is disclosed, by which a washing power is raised by rotating a drum irregularly to enable a laundry and water to move in a disordered pattern. The present invention includes a referential rotational speed setting step of setting a referential rotational speed of a drum having a laundry accommodated therein to perform a washing or rinsing on the laundry, an actual rotational speed setting step of setting an actual rotational speed within a range having a prescribed variation from the referential rotational speed set by the referential rotational speed setting step, and a drum rotating step of rotating the drum according to the actual rotational speed if the actual rotational speed is set by the actual rotational speed setting step.