6results about How to "Realize circulating heat dissipation" patented technology

The invention discloses an outdoor oil-immersed transformer convenient for heat dissipation, and relates to the technical field of transformers, the outdoor oil-immersed transformer comprises a box body and a transformer body fixedly mounted at an inner cavity of the box body, a rainproof cover is fixedly mounted at the top of the box body, and fans are fixedly mounted on two sides of the box body; heat dissipation mechanisms are installed on the two sides of an inner cavity of the box body, cooling mechanisms are installed on the heat dissipation mechanisms, a liquid limiting plate is fixedly connected between the heat dissipation mechanisms, and a floating guide pipe is fixedly installed on the top of the liquid limiting plate. According to the outdoor oil-immersed transformer facilitating heat dissipation, automatic opening and closing of an oil duct are achieved through thermal expansion of oil in the cooling mechanism, oil circulation heat dissipation can be completed without external electric drive, the heat dissipation mechanism is arranged in the inner cavity of the transformer box, air cooling is guaranteed, outdoor dust can be effectively prevented from entering the box to be accumulated, and the heat dissipation efficiency is improved. And dust accumulation and blockage of the cooling fins and the heat exchange pipe wall are avoided, heat resistance is increased, maintenance and cleaning frequency is reduced, and the device is suitable for outdoor severe dust raising environments.

The present invention discloses an LED lamp tube structure that utilizes gravity self-convection to accelerate heat dissipation, which relates to the technical field of heat dissipation lamp tube structures. It includes a lamp holder, a lamp cover, and an LED lamp body installed inside the lamp holder. It further includes: a heat dissipation component and an adjustment component arranged inside the lamp holder. When heat dissipation inside the lamp holder is required, based on the principle that hot air with a low density rises under the upward net buoyancy force and cold air with a high density sinks downward, natural air from the outside flows in through the air inlet, enters the low-position port through the ventilation openings on the sliding block, and then flows into the inside of the lamp holder through the openings on the connecting plate. After the natural air enters, it quickly fills the space at the bottom of the lamp holder. The original hot air inside the lamp holder rises and flows out through the heat dissipation openings, and the natural air fills the vacancy, prompting the heat to quickly move upward and be discharged. Moreover, the natural air is heated by the heat of the LED lamp body and becomes hot air, and the continuous input of natural air realizes the self-convection cycle heat dissipation inside the lamp holder.

This invention relates to the field of electrical cabinet heat dissipation technology, specifically a circulating heat dissipation low-voltage electrical cabinet, including a cabinet body and a fan structure. A fan structure communicating with the interior of the cabinet is installed on the top of the cabinet body, and a heat collection cylinder is located above the fan structure. An elastic cylinder is connected through the bottom of the heat collection cylinder, and the elastic cylinder is fitted outside the fan structure. A circulation cylinder is located at the bottom of the cabinet body, and a connecting ring is connected through the top of the circulation cylinder. An air inlet pipe communicating with the interior and exterior is located at the bottom of the cabinet body, and the air inlet pipe is fitted outside the connecting ring. This invention collects the hot airflow discharged from the cabinet through the heat collection cylinder at the top of the cabinet body, transports it to an external cooling device via an air supply pipe, and then sends the low-temperature airflow back into the cabinet body through the circulation cylinder at the bottom of the cabinet body, forming a completely closed internal airflow circulation path. This eliminates the need to introduce ambient air, avoiding the problem of external dust and moisture entering the cabinet and contaminating electrical components. Furthermore, the hot airflow is not discharged into the deployment space, ensuring long-term stable heat dissipation efficiency.

This utility model relates to the field of heat dissipation structure technology, and more particularly to a heat dissipation structure for a micro inverter. A heat dissipation structure for a micro inverter includes a mounting plate, a placement component on the mounting plate, an inverter body placed on the placement component, a limiting component on the mounting plate for limiting and fixing the inverter body, and a heat dissipation component on the limiting component for dissipating heat from the inverter body. This utility model achieves internal gas circulation heat dissipation through the cooperation of an air pump and a semiconductor cooling chip, preventing the entry of outside air, effectively preventing the intrusion of dust, moisture, and other impurities, protecting electronic components, improving performance and service life. Simultaneously, the unique installation method eliminates the need for bolt fixing, making it convenient and quick, saving internal space of the inverter body, and facilitating subsequent maintenance.

The application discloses a high-efficiency heat dissipation type centrifugal pump, and relates to the technical field of centrifugal pumps, which comprises a pump body and a driving motor, the pump body is internally provided with a pump cavity, the driving motor comprises a rotor which is rotatably arranged in a motor shell, the rotor is provided with a rotating shaft, the pump body and the motor shell are provided with cooling members at the corresponding side walls, and one end of the rotating shaft penetrating through the cooling member is provided with a centrifugal impeller which is rotatably arranged in the pump cavity. The application breaks through the limitation of traditional heat dissipation depending on the surface of the pump body or external fans, and constructs an internal-external double-circulation cooling system. On one hand, the heat of the bearing assembly and the rotating shaft region is directly taken away by liquid medium external circulation cooling, so that the bearing assembly and the rotating shaft located in the pump body are cooled; on the other hand, the internal-external double-circulation structure significantly improves the heat dissipation efficiency of the centrifugal pump, and effectively solves the temperature rise problem of the motor, the bearing and the mechanical seal during long-time high-speed rotation.