| 摘要 |
A washing machine and detergent delivery pump assembly thereof, the detergent delivery pump assembly comprising a pump (10), a plurality of pistons (20), a motor assembly (40), and a transmission mechanism (30, 50). The pump (10) is provided with a plurality of fixed-volume cavities (11) therein for receiving the detergent; each fixed-volume cavity (11) is provided with a liquid inlet valve (12) and a liquid outlet valve (13) thereon; the plurality of pistons (20) are disposed in each fixed-volume cavity (11) in one-to-one correspondence; each piston (20) comprises a piston head (21); the piston head (21) is controlled to reciprocate in the fixed-volume cavity (11) to suck in or push out a fixed-volume of detergent; the transmission mechanism (30, 50) is used to link the plurality of piston heads (21) with the motor assembly (40), and to control one of the piston heads (21) to move in the fixed-volume cavity (11) via the motor assembly (40). Therefore, the detergent dosing pump assembly of the present invention not only ensures the flexible and stable control of detergent delivery, but also enables the detergent delivery pump assembly to have a compact structure, thus effectively reducing manufacturing cost. |
