WASHING MACHINE VIBRATION DETECTION APPARATUS

摘要

A washing machine vibration detection apparatus comprises a hanger rod (20), damper springs (41, 42), a sleeve (3), a bottom cover (14), and an electromagnetic sensing device. The electromagnetic sensing device comprises an electromagnetic coil (6) and a magnet (5). The upper end of the hanger rod (20) is connected to a housing of a washing machine; the sleeve (3) is slidably sleeved on the lower part of the hanger rod (20); the damper springs (41, 42) are located in the sleeve (3). There are at least two damper springs (41, 42), and the damper springs (41, 42) have different elastic coefficients and are connected in series. The magnet (5) is connected to the hanger rod (20); the bottom cover (4) is fixedly disposed at the bottom of the sleeve (3); the electromagnetic coil (6) and the bottom cover (4) are fixedly disposed relative to each other. When the sleeve (3) slides on the hanger rod (20), the change in a force applied to the sleeve (3) by an outer drum of the washing machine and a vibration quantity of the washing machine are reflected by the change in a magnetic flux of the electromagnetic coil (6). The magnet (5) and the electromagnetic coil (6) have relative displacement, an inductance value of the electromagnetic coil (6) changes, the detection control for water inflow of the washing machine is realized by detecting the change in the inductance value of the electromagnetic coil (6), and the vibration quantity of the outer drum of the washing machine is determined by detection. Running of the washing machine is controlled by means of a program, to ensure that dehydration of the washing machine runs smoothly and stably.