4results about How to "Reduce convection" patented technology

This invention belongs to the field of heat dissipation structure technology, specifically an LED lamp heat dissipation structure. It includes heat dissipation fins, a bottom bracket fixedly connected to the bottom of the heat dissipation fins, and a top bracket detachably mounted on the top of the heat dissipation fins. A cooling fan facing the heat dissipation fins is fixedly connected to the top of the top bracket. The heat dissipation fins include a central ring and fins, with multiple fins arranged in a ring array on the outer circumference of the central ring. An outer peripheral baffle, capable of restoring its original shape, is fixedly connected to the outer end of each fin. The free end of the outer peripheral baffle can abut against the outer end of an adjacent fin, sealing the gap between adjacent fins. In this invention, when the cooling fan is activated, the entire heat dissipation fin forms a four-sided sealed ventilation structure. This effectively improves airflow convection at the LED lamp, reduces airflow convection at gaps, and allows more airflow to directly act on the LED lamp and its surrounding heat dissipation fins, thereby significantly improving heat dissipation efficiency.

The utility model relates to an anti-crack heat preservation outer wall, including wall base, primer layer, mortar outer wall layer, imitation stone paint finish layer, imitation stone paint middle coating, be equipped with anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating, its anti-crack heat preservation structure includes the curved plate and middle baffle, the curved plate is divided into multiple groups and is arranged through linear array, and the middle baffle is inserted into the curved plate, the middle baffle is hollow in the middle, and the rock wool filling layer is filled in the hollow, and secondly, the anti-crack heat preservation structure between mortar outer wall layer and imitation stone paint middle coating fills the heat preservation mortar and covers the curved plate, the middle baffle, the utility model solves the problem that the existing anti-crack heat preservation outer wall has the problem that the insufficient supporting force causes the poor anti-crack effect, and the heat preservation effect cannot be improved.

The utility model discloses a kind of flow guide structure and single crystal furnace applied to single crystal furnace hot field.The flow guide structure can include: flow guide cylinder and flow guide component, wherein, flow guide component includes first flow guide part and second flow guide part, first flow guide part extends from the outer periphery of the lower end opening of flow guide cylinder in the direction of radial away from the central axis of flow guide cylinder and simultaneously downwardly inclined relative to the lower end opening outer periphery of flow guide cylinder, second flow guide part extends from the extension end of first flow guide part in the direction of radial away from the central axis of flow guide cylinder and simultaneously upwardly inclined relative to first flow guide part.The flow guide structure can accelerate the argon flow rate passing through liquid surface, to take away more oxygen impurities, reduce the oxygen content of drawn single crystal silicon rod.