Hanon Systems

Ja Hwa Electronics Co., Ltd.

Joong Heum Jung

Sang Ho Oh

Tae Wan Kim

Jeong Hun Seo

Jae Hwan Jung

Chae Geun Lim

Jeong Eun Lee

Bok Sun Kang

Do Sik Min

Jung Seon Kim

Young Duk Park

Jong Up Kim

Sun Joo Hong

A vehicular air conditioning system includes an air conditioner case, a blower configured to blow an air to an internal air flow path of the air conditioner case, a microphone provided in the internal air flow path on a downstream side of the blower and configured to detect noise, and a speaker configured to output sound waves having a phase opposite to a phase of the noise detected by the microphone.

Vehicular air conditioning system

An independently-controlled PTC (Positive Temperature Coefficient) heater includes a PTC unit including first and second PTC elements for generating heat by an applied power, a guide frame having an opening to which the first and second PTC elements are mounted, first and second electrode plates configured to respectively make surface contact with one surfaces of the first and second PTC elements which are exposed through the opening, a common electrode plate configured to make surface contact with the other surfaces of both the first and second PTC elements which is exposed through the opening, and an insulation member configured to insulate the first electrode plate, the second electrode plate and the common electrode plate from an outside; and a heat diffusion fin provided at a side of the heating tube.

Independently-controlled PTC heater and device

Growing community of inventors

Daejeon, South Korea

Joong Heum Jung