An air pump device with an automatic air replenishing function, comprising:
- a mounting housing, provided with an external air vent, configured to be arranged outside an inflatable product, and a valve port, configured to be connected to an inner cavity of the inflatable product;
- an air duct, formed within the mounting housing and with both ends respectively communicated with the external air vent and the valve port;
- a blower, provided within the mounting housing and configured to drive air within the air duct to flow;
- a control system, provided within the mounting housing and configured to control various electrical parts within the air pump device;
- an air replenishing pump, provided within the mounting housing and controlled by the control system;
- and
- an air pressure sensor, configured to collect air pressure data for the control system,
- wherein the control system is further configured to monitor an internal air pressure of the inflatable product through the air pressure sensor, and trigger, with a monitored value of air pressure being lower than a preset threshold, the air replenishing pump to output air for entering the inner cavity of the inflatable product,
- wherein the air replenishing pump is provided with an outer air inhaling port and an air ejector pipe;
- the outer air inhaling port is communicated with the air duct within the mounting housing;
- the mounting housing is provided thereon with an air replenishing box;
- two opposite sides of the air replenishing box are respectively provided with an air ejector pipe interface and an air replenishing port, the air ejector pipe interface being hermetically butted with the air ejector pipe, and the air replenishing port being configured to communicate the inner cavity of the inflatable product outwards;
- a plurality of silencing cotton chunks accommodated inside the air replenishing box are arranged between the air ejector pipe interface and the air replenishing port;
- a transition cavity formed inside the air replenishing box is arranged between every two silencing cotton chunks;
- the transition cavity is internally provided with a plurality of partition plates each provided thereon with an intermediate channel, and two adjacent intermediate channels are staggered from each other, and
- wherein the air replenishing pump inhales air through the outer air inhaling port, inputs an airflow into the air replenishing box through the air ejector pipe and the air ejector pipe interface, drives the airflow to sequentially pass through the silencing cotton chunks, and then outputs the airflow from the air replenishing port to the inner cavity of the inflatable product.