3results about How to "Direct use" patented technology

The application belongs to the field of household appliances, and discloses an oven, which comprises a box body, a fan cover, a first heating element, a first fan, a second heating element and a heat dissipation element. The fan cover divides the inside of the box body into a cooking cavity and a hot air cavity, and the hot air cavity is provided with an air inlet and an air outlet. The second heating element is arranged at the top of the cooking cavity, and the air outlet comprises a first air outlet facing the second heating element. The heat dissipation element is connected with the second heating element, and the side of the heat dissipation element facing the first air outlet is provided with a wind guide surface for guiding the airflow flowing through the second heating element downward to a food placement area. The oven guides the hot air circulation airflow to the second heating element and the heat dissipation element, expands the heat exchange area by using the heat dissipation element, forces the airflow to carry away heat and is directionally guided through the wind guide surface, reduces the accumulation and dissipation of heat at the top, improves the thermal efficiency, shortens the preheating time, improves the temperature uniformity of the cooking cavity, and helps to prolong the service life of the second heating element and the nearby devices.

The utility model provides a multifunctional dust removal gun suitable for a rail operation vehicle, which belongs to the technical field of rail operation vehicles and comprises a power source device, the power source device is connected with the dust removal gun through a connecting pipe, and the dust removal gun is aligned with a filter element. Direct utilization of high-pressure air is achieved, and the dust removal efficiency and convenience are improved.