Mitsubishi Electric Corporation

Masaji Iida

Toshiya Suzuki

Takashi Ishida

Masahiro Kondo

Keigo Yamamoto

Shinji Nakashima

Makoto Tanishima

An elevator apparatus includes an elevator car; an air blower including an air inlet and an air outlet; ducts each having one end individually connected to the elevator car, the air inlet and the air outlet; intake and exhaust air volume adjusting means having the other end of each of the ducts connected thereto, which adjusts an intake and exhaust volume of air in the elevator car by varying a volume of air that bypasses the car to flow from the air outlet to the air inlet of the air blower; and control means that controls the intake and exhaust air volume adjusting means, to adjust air pressure within the car to set air pressure. The elevator apparatus adjusts air pressure within the elevator car, even when there is a small differential pressure between the set air pressure within the car and an air pressure outside the car.

Elevator apparatus

It is an object to ease discomfort feeling caused by ear fullness for passengers of an elevator. An air pressure control devicecontrols an air pressure in an elevator carusing an air pressure adjusting devicesuch as a blower, an air compressor, etc. In the air pressure control device, a departure/arrival control unitlargely changes the air pressure in the elevator carin the first period which is a time zone at the time of departing from a departure floor (or at the time of arriving at an arrival floor), and an except departure/arrival control unitslightly changes the air pressure in the elevator carin the subsequent second period (or in a time period until arrival). By this 2-step air pressure control, the passenger is prompted to clear the ear in a short time T, the ear fullness is resolved by the ear clearing, and thereafter, the passenger can ascend/descend with the elevator carcomfortably until arriving at the arrival floor.

Elevator air pressure control device

Wind control cover for elevator

Growing community of inventors

Tokyo, Japan

Masaji Iida