An air pump comprises a controller, a pump, a driving switch and a pressure sensor. The controller includes a central processing unit and defines an air inlet. The pump couples to the controller to inflate or discharge air from an inflatable body. The pump comprises a housing defining an inflating and a discharging port. The driving switch couples to the controller to implement switching between two or more air passage configurations. The pressure sensor couples to the central process unit to detect an internal pressure value of the inflatable body. The controller includes a wireless communication module which communicates with the central processing unit and a mobile terminal. The mobile terminal includes a terminal wireless communication module and a terminal input unit. The terminal wireless communication module communicates with the wireless communication module. The terminal input unit provides at least an inflation, a deflation, or a stop signal input.

A built-in air pump with rapid inflation and deflation for an inflatable product includes a first channel, a second channel and a centrifugal fan. A first air hole and a third air hole are formed in the first channel. A second air hole and a fourth air hole are formed in the second channel. The suction end of the centrifugal fan is abutted against the first channel, and the exhaust end of the centrifugal fan is abutted against the second channel. When in inflation, the first air hole and the second air hole are communicated with the outside of the inflatable product, and the third air hole and the fourth air hole are communicated with an inner cavity of the inflatable product.

A pump unit includes a pump housing having a valve assembly positioned on a wall thereof and adapted to be coupled to an inflatable device, and an air control assembly that is housed inside the pump housing. The air control assembly includes an impeller section that houses an impeller, and has an air inlet and an air outlet. The air control assembly further includes a motor housing that houses a motor, the motor housing having an air vent that communicates the interior of the motor housing with the air inlet and the air outlet, and a vent opening that communicates the interior of the motor housing to the environment. The air outlet is aligned with the valve assembly when the pump unit is operated in the inflation mode, and the air inlet is aligned with the valve assembly when the pump unit is operated in the deflation mode.

A pump assembly is provided for use with an inflatable product. The inflatable product has a chamber having an air inlet and an air outlet. The pump assembly has a pump unit that is positioned inside the chamber for inflating and deflating the chamber, the pump unit having a motor that is operatively coupled to a first blower and a second blower, with the first blower is fluidly coupled to the air inlet and the second blower is fluidly coupled to the air outlet. The chamber is inflated by intake of air through the air inlet to the first blower and then into the chamber, and the chamber is deflated by drawing air from the chamber to the second blower and then out of the chamber through the air outlet.

An air pump is delineated for an inflatable product that can be selectively connected thereto. The inflatable product includes a shell located on a side wall. The shell includes an internal chamber for selective placement of the air pump and an air valve for selective communication with the air pump. When the air pump is located in the internal chamber it can be moved to switch between a first position and a second position. The air pump includes an air inlet and an air outlet such that the air inlet is in communication with the air valve in the first position to deflate the inflatable product and the air outlet is in communication with the air valve in the second position to inflate the inflatable product. The air pump can also be used externally via manual connection between the air inlet or the air outlet and other inflatable products.

An air pump including an air inlet and outlet provided on housing, the housing connecting sealing assembly capable of sealing air outlet, and a rotary bracket disposed inside housing, capable of driving the sealing assembly to open or seal air outlet when rotating. The sealing assembly includes a cover body connected to housing and provided with an airflow passage communicating with air outlet, the sealing assembly further includes sealing bracket capable of being pushed by rotary bracket and sliding horizontally relative to housing when the rotary bracket rotates. The sealing bracket includes sealing body with at least two contacting bars of an array in a circumferential direction contacting rotary bracket, the sealing bracket has a sealing ring capable of being in sealing contact with housing and being detached from housing when sealing bracket slides, a spring for pressing the sealing bracket toward housing is disposed between sealing and cover body.

There is provided a dynamic sealing assembly for a rotary machine, comprising a primary sandwich plate, a secondary sandwich plate and a bristle pack. The primary sandwich plate comprises a plurality of primary vane openings, and the secondary sandwich plate comprises a plurality of secondary vane openings. The bristle pack comprises a plurality of bristles and is disposed between the primary sandwich plate and the secondary sandwich plate. Each of the plurality of primary vane openings overlies and aligns with a respective secondary vane opening to form a vane channel for receiving a vane along a longitudinal axis of the dynamic sealing assembly. The bristle pack is configured to: provide a brush seal between each vane received within the respective vane channels and the dynamic sealing assembly; and allow relative movement between the dynamic sealing assembly and the vane received within each vane channel along the longitudinal axis.

The present disclosure relates to air assemblies having an inflation, a deflation, and a closed state for use with inflatable products, such as air mattresses. Specifically, the present disclosure relates to air assemblies where the configuration of the air assembly can be changed manually by a user by operating a directional control valve to inflate, deflate, or close the inflatable product. The directional control valve may also activate a pump in the inflation and deflation states and deactivate the pump in the closed state.

A voltage regulation and speed regulation control circuit (100, 130, 200, 250) of an air pump (102) is provided. The voltage regulation and speed regulation control circuit (100, 130, 200, 250) may comprise a chopper power supply circuit (104, 202), a full bridge rectifier circuit (106, 204) and a switch (108, 212). The switch (108, 212) may be used to switch the chopper power supply circuit (104, 202) or the full bridge rectifier circuit (106, 204) to be connected to the positive and negative input terminals (103, 105) of the air pump (102). The output voltage of the chopper power supply circuit (104, 202) and the output voltage of the full bridge rectifier circuit may be different (106, 204).

An air pump is delineated for an inflatable product that can be selectively connected thereto. The inflatable product includes a shell located on a side wall. The shell includes an internal chamber for selective placement of the air pump and an air valve for selective communication with the air pump. When the air pump is located in the internal chamber it can be moved to switch between a first position and a second position. The air pump includes an air inlet and an air outlet such that the air inlet is in communication with the air valve in the first position to deflate the inflatable product and the air outlet is in communication with the air valve in the second position to inflate the inflatable product. The air pump can also be used externally via manual connection between the air inlet or the air outlet and other inflatable products.