Drum washing machine, isolated washing control method for washing device, and washing device

A control method for isolated washing of a drum washing machine, characterized in that the drum washing machine comprises an inner cylinder, an outer cylinder, and a spray device;

• the inner cylinder is rotatably arranged inside the outer cylinder, and is used to accommodate clothing to be washed;
• a gap chamber is formed between the inner cylinder and the outer cylinder;
• the spray device is arranged to be capable of spraying toward an interior of the inner cylinder;
• and the control method comprises the following steps:
• S1:
• alternately controlling the spray device to spray water and/or washing liquid onto the clothing to be washed inside the inner cylinder and controlling the inner cylinder to rotate, so that the clothing to be washed inside the inner cylinder is flushed with running water;
• S2:
• obtaining an actual water level height in the gap chamber after the spray device is activated;
• and
• S3:
• controlling the gap chamber to drain water when the actual water level height is higher than a preset water level height, so that the water in the gap chamber never comes into contact with the inner cylinder.