Cooling unit for power semiconductors

US5526231A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Winfried Arz · Koblenzer Straße, DE
• Karl-Heinz Ideler · Spardorf, DE

Key dates

• Filing date: Dec 15, 1994
• Grant date: Jun 11, 1996
• Expiry date: Dec 15, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/14
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A cooling unit for a number of power semiconductors is formed by a quadrangular tube to which the power semiconductors are secured at an exterior with good thermal conductivity, in an equipping region of the tube. The quadrangular tube has a coolant inlet and a coolant outlet. The quadrangular tube contains a laminarization unit disposed in a region following the coolant inlet, this region overlapping the equipping region. The laminarization unit produces a substantially laminar flow of the coolant in the tube within the aforementioned region. In a region between the laminarization unit and the coolant outlet, the quadrangular tube contains a number of turbulence-producing elements for introducing turbulence into the coolant flow.