Line-controlled air pump for multi-chamber inflatable products and control method thereof

A line-controlled air pump for multi-chamber inflatable products, comprising:

• an installation shell embedded within a cavity of the inflatable products, in which a fan and a control system are disposed, and an external air port formed on a side of the installation shell exposed outside the inflatable products;
• a main chamber supply port and a plurality of secondary chamber supply ports formed on a side of the installation shell inside the inflatable product cavity, and a main chamber valve and secondary chamber valves respectively provided for the main chamber supply port and secondary chamber supply ports;
• an L-shaped switching pipe movably disposed within the installation shell and controlled by the control system, with one end thereof simultaneously connected with the main chamber supply port and each secondary chamber supply port, and the other end thereof selectively connectable to a suction end and a discharge end of the fan through different displacement positions;
• a pressure sensor disposed within the installation shell, through which pressure data of the inflatable products is detected by the control system;
• wherein with the L-shaped switching pipe connected to the discharge end of the fan, the fan is configurated to drive external air successively to pass through the external air port and L-shaped switching pipe and respectively enter the main chamber supply port and each secondary chamber supply port to inflate the main chamber and each secondary chamber of the inflatable product;
• wherein with the L-shaped switching pipe connected to the suction end of the fan, the fan is configured to drive air from the main chamber and each secondary chamber of the inflatable product to respectively pass through the main chamber supply port and each secondary chamber supply port and enter the L-shaped switching pipe, and is finally discharged through the external air port;
• the installation shell is provided with a Z-shaped partition board including an upper horizontal board and a lower horizontal board, with a vertically extending middle vertical board interconnecting the upper horizontal board and lower horizontal board;
• wherein the upper horizontal board respectively divide the interior of the installation shell into a blowing chamber and a suction chamber located at opposite sides of the upper horizontal board, and a side of the middle vertical board defines an exchange chamber within the installation shell, with the blowing chamber and exchange chamber, as well as the suction chamber and exchange chamber respectively separated by the middle vertical board;
• wherein the external air port is connected with the exchange chamber, the middle vertical board is provided with an inflation port connected with the blowing chamber and a discharge port connected with the suction chamber, and the L-shaped switching pipe is selectively connectable with the discharge port and inflation port through different displacement positions;
• wherein the fan includes a centrifugal impeller mounted in the blowing chamber, with a suction end at a center of the centrifugal impeller being connected with the suction chamber;
• wherein a side of the lower horizontal board away from the exchange chamber defines a collection chamber within the installation shell, with the main chamber supply port and each secondary chamber supply port being simultaneously connected with the collection chamber;
• wherein the lower horizontal board comprises a vertical tube connected with the collection chamber, and the inflation port and discharge port are linearly arranged along an extension direction of the vertical tube;
• wherein one end of the L-shaped switching pipe is slidably received within the vertical tube and is connected with the collection chamber to allow the L-shaped switching pipe to perform linear reciprocating movement along the vertical tube to different positions so as to make the other end of the L-shaped switching pipe selectively connect with the inflation port and discharge port, and
• wherein the lower horizontal board is integrally formed with a supplemental tube, through which the exchange chamber is in fluid communication with the suction chamber;
• wherein when the L-shaped switching pipe is connected with the inflation port, a port of the supplemental tube within the exchange chamber is in an open state, and when the L-shaped switching pipe is connected with the discharge port, a bottom surface of the L-shaped switching pipe covers and seals the port of the supplemental tube within exchange chamber.