Abstract: A tilting device is installed in a headrail of a window blind to tilt slats. The headrail includes a plurality of ladder drums and a transmission shaft. Each ladder drum is fastened with a ladder. The ladder drums are connected to the transmission shaft in series and the transmission shaft makes the ladder drums rotate. The device includes a transmission member, having a worm and a worm gear, received in the headrail and having an input shaft to engage a driven portion of the transmission shaft, and a motorizing member includes a shaft and a power source, wherein the power source powers the shaft to turn; the shaft engages the input shaft to drive the transmission shaft to turn; therefore, the window blind can be tilted by motor power or manual manipulation.

Abstract: A heat exchanger of a desiccant wheel dehumidifier, disclosed in the disclosure, includes a frame and multiple heat exchange platy tubes. The frame has an air inlet and an air outlet. The multiple heat exchange platy tubes are fixed on the frame and are substantially arranged side by side with each other. Every two of the multiple heat exchange platy tubes adjacent to each other are separated at an interval from each other to form a first flow channel. Each of the multiple heat exchange platy tubes includes a main body and at least one spacing wall. The main body has multiple second flow channels therein. The at least one spacing wall is located between two of the multiple second flow channels adjacent to each other. The air inlet and the air outlet communicate with the multiple second flow channels.

Abstract: A heat exchanger of a desiccant wheel dehumidifier, disclosed in the disclosure, includes a frame and multiple heat exchange platy tubes. The frame has an air inlet and an air outlet. The multiple heat exchange platy tubes are fixed on the frame and are substantially arranged side by side with each other. Every two of the multiple heat exchange platy tubes adjacent to each other are separated at an interval from each other to form a first flow channel. Each of the multiple heat exchange platy tubes includes a main body and at least one spacing wall. The main body has multiple second flow channels therein. The at least one spacing wall is located between two of the multiple second flow channels adjacent to each other. The air inlet and the air outlet communicate with the multiple second flow channels.

Abstract: A method to motorize bladeset rotation angle of a shutter including the following steps: resetting the bladeset to an origin point position at first when a start instruction is received, rotating the bladeset to a given target angle with respect to the origin point, and calculating a residual angle deviation to continuously rotate the bladeset to the given target angle when an instruction of the given rotation angle is received again during the operation. Further, a device provided to motorize bladeset rotation angle of a shutter includes an input interface for inputting instructions, a sensor for sensing an origin point position of the bladeset, a driver for driving the bladeset to rotate, and a controller for calculating and controlling the operation of the driver according to the origin point position and target angle, such that the bladeset is controlled to be rotated to the required angle.

Abstract: A wireless remote control circuit with dual processing units and a method is provided, which includes a signal receiving unit, a first and a second processing unit. The first processing unit is connected to the signal receiving unit and switches between an activation mode and a sleep mode at a predefined time. The second processing unit is connected to the first processing unit and is preset in the sleep mode. The first processing unit provides a voltage to activate the signal receiving unit during the activation mode, and transmits a resume signal after obtaining a control signal. Then, the second processing unit enters an activation mode after it receives the resume signal, and enters the sleep mode again after its internal logic circuit completes its operation, so as to reduce the complexity of using a single processing unit to design a circuit and avoid huge power consumption of the circuit.