5 results about "Passive ventilation" patented technology

The disclosed technology relates to a passive ventilation system for buildings, designed to enhance air circulation and reduce reliance on mechanical ventilation systems. The system features a hollow central column with air outlets on its outer surface to capture air from the building interior. An air nozzle within the column accelerates the airflow, directing it through an upper and lower panel that form an air passage, creating a low-pressure zone to expel air passively. The system integrates seamlessly into buildings, with a central column foundation, a base platform, and parallel floor slabs. The air outlets are strategically located between the slabs, enabling air circulation from multiple floors through the central column, which expels it to the exterior without mechanical assistance. This innovative design ensures improved thermal comfort and energy efficiency, making it ideal for use in commercial, residential, and office buildings.

This invention provides a building exterior wall panel with an integrated passive ventilation cavity, belonging to the technical field of building exterior wall panel technology, aiming to solve the problems of poor heat dissipation in summer and poor thermal insulation in winter of traditional exterior wall panels. The panel includes a panel body composed of an exterior decorative layer, an insulation core layer, and an inner lining layer; a ventilation cavity disposed between the exterior decorative layer and the insulation core layer and distributed along the height of the panel; and a thermally actuated switch assembly disposed at the air inlet or outlet of the ventilation cavity. This switch assembly utilizes a two-way shape memory alloy actuator to automatically open or close the ventilation opening according to the ambient temperature. In hot summer weather, the ventilation opening opens, using the thermal pressure effect to form a "cooling chimney" to remove heat; in cold winter weather, the ventilation opening closes, reducing heat loss and thus improving thermal insulation. This device can adapt to the external ambient temperature and passively adjust the wall performance to reduce building energy consumption.

The utility model discloses a kind of unpowered ventilation purification devices of adjustable indoor pressure, it includes ventilation pipe, the inside fixed connection of ventilation pipe has purification filter plate and is installed with elastic switch, the surface of elastic switch is installed with baffle, the right end fixed connection of ventilation pipe has regulating valve shell, the surface of regulating valve shell is fixedly connected with defence cover by bolt.The utility model is monitored to indoor air pressure by baroceptor and signal is transmitted to controller, so that controller controls motor to open, and then motor is rotated by main rotating lever and drives branch rod one, at this time under the linkage action of connecting rod, so that branch rod two drives sub rotating lever to rotate, and then so that main rotating lever and sub rotating lever all drive valve plate to rotate, it can reach that indoor air pressure is monitored in real time by baroceptor, then air intake grille is driven to rotate moderately by motor, so that the purpose that air intake amount in ventilation pipe is adjusted to match with indoor negative pressure demand is achieved.

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.

This invention relates to the field of passive ventilation and heat dissipation technology for power distribution equipment, specifically to a duct partition and airflow guiding structure for passive ventilation and heat dissipation of power distribution equipment. The duct partition includes a power distribution cabinet and a multi-channel distributed ventilation and heat dissipation mechanism disposed within it. Structural columns are provided at each of the four corners of the power distribution cabinet, and a supporting base is provided at the bottom of the cabinet. The supporting base is located at the bottom of the structural columns and is bolted to them. Both the supporting base and the structural columns are hollow inside. Connecting pipes are fixedly connected to each of the four corners of the inner side of the supporting base, and the other end of each connecting pipe extends to and connects with the multi-channel distributed ventilation and heat dissipation mechanism. Several inward-pushing nozzles are fixedly connected to the inner side of the structural columns. This invention provides a duct partition and airflow guiding structure for passive ventilation and heat dissipation of power distribution equipment, which has the advantages of multi-channel distributed air intake and four-corner auxiliary air supply, improving the passive ventilation and heat dissipation effect of the power distribution equipment.