12 results about "Active ventilation" patented technology

Turbomachine nacelle equipped with an active ventilation vent. A turbomachine nacelle includes a ventilation vent (200) comprising: - a first ring (210) defining a ventilation opening (211), - a plurality of blades (220) extending into the ventilation opening of the first ring, each blade (220) having a fixed section (221) and a pivoting section (222), - a second ring (230) movable for rotation, the first ring (210) being rotationally meshed with the second ring (230), - a drive motor for rotating the second ring (230). When the second ring (230) is rotated, the pivoting sections (222) of the blades of the plurality of blades (220) are oriented in a direction (D2) different from the direction (D1) of the fixed sections. Figure for the abbreviation: Fig. 3.

An energy storage unit capable of controlling a thermal runaway, comprising an enclosure for housing battery modules for energy storage, a movable panel configurable between a closed position and an open position, a controllable actuator, connected to the movable panel, for moving the movable panel from the closed position to the open position, at least one sensor capable of measuring environmental parameters of the interior of the enclosure and a control unit connected to the sensor and the controllable actuator, for automatically activating the actuator and moving the panel from the closed position to the open position when at least one of the measured environmental parameters is indicative of thermal runaway, so that heat and explosive gases generated by the thermal runaway can escape outside the enclosure. A method for controlling a thermal runaway phenomenon of an energy storage unit comprising battery modules is also described.

This invention provides an active ventilation and sand-proof structure for wind turbine generators, relating to the field of wind power generation technology. This active ventilation and sand-proof structure features an air inlet on the tower door, with a dust filter and fan installed at the inlet. The dust filter is located outside the fan, which drives external air through the filter before it enters the tower body. This achieves active ventilation inside the tower body, facilitating heat dissipation for related electrical equipment. Simultaneously, it creates positive pressure at the ventilation opening (the internal air pressure is greater than the external air pressure), ensuring that air inside the tower body can flow to the external environment. While achieving ventilation and heat dissipation, external air carrying sand and dust will not flow into the tower body through the ventilation opening. In other words, this active ventilation and sand-proof structure for wind turbine generators simultaneously addresses both tower ventilation and sand protection.

The present application relates to the technical field of medical devices, and discloses a head-pelvis ring traction and turning-over pillow device, which comprises a first base and a second base, a connecting module is arranged between the first base and the second base, an inner side of the first base is provided with a back supporting module, the back supporting module comprises a first sliding rail fixedly connected to the inner side of the first base, both ends of the first sliding rail are slidably connected with a first movable seat, the top of each of the two first movable seats is fixedly connected with a first extension pad, a middle part of the first base is provided with an adjusting piece for driving the two first movable seats to slide towards or away from each other, a back supporting piece is arranged between the two first movable seats, and a lateral supporting piece is movably connected to the outer side of each of the two first movable seats; an inner side of the second base is provided with a hip supporting module. The adjustable modular structure, integrated active ventilation system and safe body position fine adjustment function of the head-pelvis ring traction and turning-over pillow device can significantly improve the bed comfort and nursing safety of patients subjected to head-pelvis ring traction.

This application discloses a waterproof cabinet louver, comprising: a frame assembly, with a plurality of louver components arranged vertically at equal intervals on the inner side of the frame assembly; each louver component includes an upper half and a lower half, which are arranged alternately; an exhaust mechanism is also fixedly connected to one side of the frame assembly. In order to solve the technical problems in the prior art, such as the possibility of water leakage in ordinary louvers under severe windy and rainy weather, and the sacrifice of ventilation area leading to low heat dissipation efficiency of the cabinet, this application designs a louver that combines passive waterproofing, active airflow guidance, and active ventilation. The overall technical solution formed by the unique combination of louver components and exhaust mechanism can achieve efficient ventilation and heat dissipation on non-rainy days and switch to efficient waterproof mode on rainy days. At the same time, the special combination design of the upper and lower half can effectively collect and discharge any small amount of intruding moisture.

This utility model discloses a breathable and moisture-permeable covering structure for a car armrest, relating to the field of automotive interior technology. It includes breathable leather, a base, and a connecting box. Inside the breathable leather, a sponge layer, a heating plate, and a support plate are sequentially nested, all three having ventilation holes. One end of the base is connected to the connecting box, the lower end of which has a collection box and an air duct, and an internal controller. A water storage box is located inside the base, connected to an absorbent cotton core via a support rod. The absorbent cotton core is wrapped with a heating wire. The upper end of the water storage box is connected to a water inlet via a conduit. The controller is electrically connected to the heating plate, heating wire, and ducted fan. This utility model achieves active ventilation through the ventilation holes and ducted fan, regulates temperature through the heating plate and heating wire, and regulates humidity through the water storage box and absorbent cotton core, solving the problems of poor breathability and uncomfortable temperature in existing armrests. It also features a high-temperature steam self-cleaning function, improving driving and riding comfort.

The application relates to the technical field of building ventilation, and relates to an energy-saving building top ventilation device, which comprises a lower support, a support sleeve is arranged at the top of the lower support, a bottom support is rotationally connected to the support sleeve, ventilation fan blades are uniformly arranged on the bottom support, the top of the ventilation fan blades is fixed on a top support, a shielding frame is rotationally connected to the top support, a blockage prevention mechanism is slidably connected to the shielding frame, and the blockage prevention mechanism is connected with a positive ventilation mechanism; the ventilation fan blades are circumferentially distributed to form a spherical ventilation structure for passive ventilation, and the positive ventilation mechanism can be used for positive ventilation when the wind speed is too low; the blockage prevention mechanism is used for preventing the gaps between the ventilation fan blades from being blocked; and the low-temperature sealing mechanism is used for automatically cutting off the ventilation pipeline when the temperature of the building is too low, so that the external cold air is prevented from invading the building, and the heat loss in the building is reduced.

The present application relates to underwater launching test technology of a navigation body, in particular to a free launching underwater navigation body test model with active ventilation function. The test model comprises a head section, a column section, a shoulder air chamber and a ventilation system. The outside wall of the shoulder air chamber is provided with a mounting ring in the circumferential direction, which is mounted on the inside of the head of the column section. The bottom of the shoulder air chamber is provided with an air inlet, and the side wall is uniformly provided with air holes in the circumferential direction. A first gap is arranged between the column section and the shoulder air chamber. The head section is mounted on the air chamber cover of the shoulder air chamber, and a second gap is arranged between the head section and the column section. The three parts are connected to form an exhaust passage. The air tank of the ventilation system is mounted in the column section, and the connecting air pipe is connected to the air inlet of the shoulder air chamber. The model can uniformly and stably exhaust air, simulate the evolution process of the ventilation air bubble, and the layered assembly structure is convenient for disassembly, maintenance and comparison test. It can provide reliable test means for revealing the dynamic mechanism of the ventilation air bubble, and solve the problems of low working condition restoration degree and inconvenient maintenance of the existing model.

This invention discloses a low-carbon, green double-layer window based on passive energy-saving technology, comprising a frame and two window panels located inside the frame. A middle curtain with unrolling and rewinding functions and two isolation seats are provided between the first and second window panels. The middle curtain includes multiple functional sections such as a flow section, an energy-collecting section, a louver section, a mesh section, and a purification section. The isolation seats are located on both sides of the middle curtain, and each isolation seat is equipped with an exhaust assembly. The double-layer window of this invention features a flexible solar panel installed on the middle curtain between the two window panels, which can convert and utilize the solar energy from the outer wall, providing dynamic energy saving, thermal insulation, and low-carbon green functionality. The multiple functional sections on the middle curtain, combined with the isolation seats, enable the window to perform solar energy conversion, active ventilation, and air purification functions, making it both functional and practical.

This invention belongs to the field of power distribution cabinet technology, and particularly relates to a power distribution cabinet with an auxiliary ventilation structure, comprising: a cabinet body, with symmetrical baffles on its top, a connecting frame installed between the two baffles, and a top plate hinged to the bottom two sides of the connecting frame via a rotating sealing assembly; a heat dissipation mechanism, including two sets of exhaust holes and two sets of air inlets symmetrically opened on the top of the cabinet body and communicating with the inner cavity of the cabinet, with air guide covers slidably connected to each set of exhaust holes and each set of air inlets, and an exhaust fan and an exhaust fan respectively installed in the air guide covers corresponding to the exhaust holes and air inlets. This invention can drive the air guide covers to slide, linking the top plate and the cover to adaptively open and close, realizing a dual-mode switching between active ventilation and sealed heat conduction, adapting to both sunny and rainy weather conditions, balancing heat dissipation and dust and moisture prevention performance, and simultaneously and automatically cleaning the heat dissipation plate to avoid dust accumulation affecting performance.