Inhalation device

摘要

The ceramic container (1) has a thermal conductivity of 15 W/Km. The heater (6) is a thick layer resistance on its outer surface. Preferred features: The ceramic is aluminum oxide with internal surfaces glazed. The internal bottom surface (3a) slopes down to its center. Externally, the base is ground flat. The ratio of wall thickness to height is 1:6 to 1:20 and to diameter is 1:15 to 1:19. The thick layer resistance is located solely on the surface of the external base (3b). Its form is circular, spiral, meandering, wavy or zigzag. The base center is not covered by the resistance. The total value of the resistance is about 12 ohms. An insulator is adhered to the external surface and contains temperature sensors. The sensors are negative temperature coefficient (NTC)-resistors. A temperature limiter is included.