Intex Marketing Ltd.

An inflatable body may include a top panel, a bottom panel, and at least one enclosure belt coupled to the top panel and the bottom panel to form a chamber therein. The inflatable body may include at least one of an oblique panel, a spacer, and an inner enclosure belt formed of a low ductility material.

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 ).

The present disclosure discloses an air passage unit for a massaging pool. The air passage unit comprises an air passing portion, a first air connecting portion, and a first fastening structure. The first air connecting portion comprises two first air connecting openings configured to be in communication with the air passing portion, the first fastening structure is configured to be detachably connected to the massaging pool, and the two first air connecting openings are disposed on the first fastening structure so as to enable the two first air connecting openings to be synchronously connected to or detached from the massaging pool through the first fastening structure being connected to or detached from the massaging pool. The present disclosure further discloses an air passage system for a massaging pool. The air passage system comprises an air pump, and an air passage unit. The air passage unit comprises an air passing portion, a first air connecting portion, and a control mechanism. The air passage unit is configured to be alternatively in an inflated state or an exhausted state. When the air passage unit is in the inflated state, a first passing passage is in communication with external air, and a second air passing passage is in communication with the first air connecting portion. When the air passage unit is in the exhausted state, the first air connecting portion is in communication with the first air passing passage through the control mechanism, and the second air passing passage is in communication with the external air through the control mechanism.

A control circuit and method for DC motors is disclosed in the present application. The control circuit may comprise a voltage monitoring unit for monitoring the output voltage of the DC power supply, a switching circuit for controlling the operation of the DC motor, and a PWM signal output unit to output PWM signal for controlling the switching circuit. The PWM signal output unit may be configured to regulate the duty cycle of the output PWM signal based on the results of the voltage monitoring unit. In this way, motors with different resistances may work continuously in a stabilized state. Also, it may detect when a load like motor is heavy loaded or overloaded, stop motor from starting, and avoid overtime working due to the drop of supply voltage damaging the load like motor. When the voltage of power supply is higher than the rated voltage of the motor, it may regulate the input voltage value of power supply to avoid the increase of excitation current of motor with the increase of the applied voltage, thereby avoid the loss of iron core.

A method for controlling the appointment of functions of smart home appliances that only when the user control interface completes the appointment setting, the mobile terminal sends the appointment control instruction to the controlled smart home appliance is provided. The mobile terminal does not send the appointment control instruction to the controlled smart home appliance until the next time the user updates the appointment setting, the mobile terminal sends the appointment control instruction to the controlled smart home appliance again to update the appointment control of controlled smart home appliances, the controlled smart home appliance receives the appointment control instruction sent by the mobile terminal, uses the function activation counter and the function duration counter of the microcontroller to count down respectively, and cooperates with the cyclic shift of the N work flag bits used to indicate whether the function is activated or not to realize the cycle control of the function, the microcontroller does not need to be configured with a clock module, which not only reduces the cost, but also does not need to calibrate the clock regularly, which improves the accuracy of the appointment control.

An integrated connection device may connect a controller to a swimming pool that may include one or more features requiring electricity. The integrated connection device may include an air passageway and an electrical conductor. Thus, the integrated connection device may transport air to the swimming pool and at least partially conceal the electrical conductor that connects the one or more electrical features to the controller.

A high and low-pressure integrated air pump includes a single housing including an air inlet and an air outlet. A high-pressure pump is disposed within the housing and in fluid communication with the air inlet, and uses a first outlet passage to discharge to the air outlet. A low-pressure pump is also disposed within the housing and in fluid communication with the air inlet, and uses a second outlet passage to discharge to the air outlet.

An air pump for an inflatable product may include an inflation-and-deflation control assembly, a pump assembly, a pressure valve assembly, and a linkage assembly. The pressure valve assembly may detect the pressure inside an inflatable chamber of the inflatable product. Once a pressure threshold is reached within the inflatable chamber, the pressure valve assembly may activate the linkage assembly. The linkage assembly may cause the inflation-and-deflation control assembly to deactivate the air pump and place the air pump in a closed or sealed position.

An air pump for an inflatable product may include a pressure valve assembly and an inflation-and-deflation control assembly. The inflation-and-deflation control assembly may include a switch assembly operatively coupled to the pressure valve assembly and a pump assembly operatively coupled to the switch assembly. The switch assembly may have a first position and a second position, and the pressure valve assembly may be configured to engage the switch assembly to maintain the switch assembly in the first position or the second position. When the pressure valve assembly detects that a pressure threshold has been reached within the inflatable product, the pressure valve assembly may disengage from the switch assembly.