Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Hidehito Yamauchi

Hiroyuki Uramachi

Tomoya Yamakawa

Shingo Hamada

Satoru Kotoh

Fumiyoshi Yonezawa

Takaharu Suzuki

Takeharu Oshima

Yasushige Mukunoki

A surface of a plate () having a predetermined thickness is used as a cooling surface (). A pair of cooling medium entrance and exit () are provided on one end surface (). First and second cooling medium flow paths (), a cooling medium branch path () communicating with the cooling medium entrance () and used for dividing cooling medium to flow into the cooling medium flow paths (), and a cooling medium merging path () at which the cooling media flowing from the exits of the cooling medium flow paths () merge, are formed on a surface opposite to the cooling surface (). The cooling medium flowing clockwise through the first cooling medium flow path () passes through a cooling medium communicating flow path () formed so as to three-dimensionally cross the first cooling medium flow path (), so that the cooling medium flowing counterclockwise through the second cooling medium flow path () and the cooling medium flowing through the first cooling medium flow path () flow into the cooling medium merging path (). Thus, pressure loss is avoided, high cooling performance is obtained, and simplification of a cooling system including a cooling medium pipe and the like can be realized.

Cooler and motor-integrated power conversion apparatus

A highly accurate thermosensitive flow rate sensor is able to reduce the detection error of a flow rate even in the case of a flow accompanied by considerable intake air pulsation in an automotive engine or the like. A flow rate detecting section disposed in a main pipe is equipped with a support member having a first guide surface and a second guide surface for guiding a fluid on opposite sides thereof, and a flow rate detection element provided on the second guide surface of the support member. The second guide surface of the support member, on which the flow rate detection element is mounted, extends longer than the first guide surface in the downstream direction.

Thermosensitive flow rate sensor

Growing community of inventors

Tokyo, Japan

Hidehito Yamauchi