5results about How to "Guaranteed wind speed" patented technology

The embodiment of the invention provides a hair dryer. The hair dryer comprises a shell and a motor, the fan is arranged in the air duct; the connecting piece is connected with the shell, and a ventilation opening is formed in the connecting piece and communicated with the air duct; the heating piece is arranged in the air duct and located between the fan and the connecting piece; a medicament containing cavity is formed in the medicament bin, a medicament volatilization hole communicated with the medicament containing cavity is formed in the medicament bin, and the medicament bin is detachably connected with the connecting piece; an air outlet hole channel is formed in the air outlet piece, the air outlet piece is detachably connected with the connecting piece, and the medicament bin can be clamped between the connecting piece and the air outlet piece; and the ventilation opening, the medicament volatilization hole and the air outlet hole channel are communicated with one another. The hair dryer can spray the gaseous hair care essential oil to the hair of a user, the mode that the user smears the hair care essential oil with the hand is replaced, and the problem that the hair care essential oil is left on the hand of the user is solved; moreover, the hair care essential oil is volatilized into gas, so that the hair care essential oil can be fully absorbed by the hair of the user.

The invention belongs to the technical field of ventilation devices, and particularly relates to a warm air filter ventilation device which comprises a transfer box body, a main ventilation pipeline is inserted into the upper surface of the transfer box body, a first branch pipe and a second branch pipe are inserted into the surface of the main ventilation pipeline, and transmission assemblies are arranged in the first branch pipe and the second branch pipe correspondingly. Each transmission assembly comprises a first gear, a rectangular frame body, a main rotating shaft, an air plate with holes, a first connecting guide rod, a first toothed plate and a second toothed plate, and branch pipe judging assemblies are arranged on the surfaces of the first branch pipe and the second branch pipe respectively; it can be judged that no gas flows in the first branch pipe and the second branch pipe when the first warning lamp runs, the wind power condition in the pipeline can be judged by observing the running states of the third warning lamp and the second warning lamp, and stress in the rotating process of the first connecting shaft tends to be balanced; and the resistance in the rotating process of the first connecting shaft is reduced.

This invention discloses a handheld high-speed fan, comprising a first column and a second column. A ducted motor is housed inside the first column, with fan blades at the bottom of the ducted motor. A battery is housed inside the second column, and the ducted motor is electrically connected to the battery. An air inlet is located at the connection point of the first and second columns, and an air outlet is located at the first end of the first column furthest from the second column. A guide plate is provided at the air outlet, with the upper part serving as a converging section and the lower part as an air collecting section. The guide plate and the air outlet form an air outlet channel. In this invention, the narrowing design of the air outlet and the guide plate results in a narrowing of the internal airflow channel from bottom to top, accelerating the airflow. The airflow then flows along the guide surface of the guide plate, and finally, the symmetrical airflows on both sides converge at the center of the convex surface, thus being ejected vertically. A high-pressure zone is formed at the center of the guide plate, increasing the wind pressure and creating a vortex jet effect. This reduces airflow loss and ensures effective airflow and speed.

The circulating fan comprises a machine body, the machine body comprises a frame body, and radial air inlet holes are formed in the rear end of the frame body in the circumferential direction; the motor bracket is mounted at the front position of the hollow inner cavity of the frame body; the motor is installed on the motor support, and fan blades are installed on an output shaft of the motor; the air outlet grid is arranged at an outlet at the front end of the hollow inner cavity; the rear cover is mounted at the rear end inlet of the hollow inner cavity, and a rear end air inlet hole is formed in the rear cover; the position of the first filtering device corresponds to the position of the radial air inlet hole, and the first filtering device is used for filtering air flowing into the hollow inner cavity from the radial air inlet hole; the position of the second filtering device corresponds to the position of the rear-end air inlet hole, and the second filtering device is used for filtering air flowing into the hollow inner cavity from the rear-end air inlet hole. The circulating fan with the multiple sets of air purification devices has the advantages of being high in air speed, large in air volume, long in air supply distance, good in filtering effect, good in use experience and the like.

The metal powder bed additive manufacturing system based on the three-layer wind field comprises a forming cavity, a stratosphere air inlet channel, a flow restraining layer air inlet channel and an air purifying layer air inlet channel are sequentially arranged on an air inlet face from bottom to top, and the stratosphere air inlet channel and the air purifying layer air inlet channel extend in the first direction; an air inlet channel outlet of the flow suppression layer air inlet channel points to the second direction; the air outlet face is provided with a stratosphere air outlet channel, a flow restraining layer air outlet channel and an air purifying layer air outlet channel, the first direction is the direction from the air inlet face to the air outlet face and is parallel to the printing breadth, and the second direction inclines towards the printing breadth relative to the first direction. Through the three-layer wind field design, the stability and the wind speed of the parallel wind field beside the printing breadth and the laser lens are guaranteed, internal flocculation is avoided, printing by-products are blown and collected to the maximum extent, and the printing breadth and the laser lens are prevented from being polluted.