×

Heat sink for power module

  • US 8,387,685 B2
  • Filed: 04/19/2006
  • Issued: 03/05/2013
  • Est. Priority Date: 04/27/2005
  • Status: Expired due to Fees
First Claim
Patent Images

1. A heat sink for a power module in which a power device is mounted to at least one face, and heat from said power device is radiated by a cooling medium circulated within a refrigerant flow path arranged in the interior, said heat sink comprising:

  • a laminating body in which plural flow path plates formed in a plate shape and concavely arranging plural grooves parallel to each other on a flat joining face are arranged, and each groove is set to a parallel flow path parallel to said one face by laminating each flow path plate by each joining face, and a portion other than each groove of each joining face forms a heat transfer path to each parallel flow path of the laminating direction, said heat transfer path is formed such that a heat transfer area is gradually reduced from said one face side;

    a first side plate joined to a side face of one end side of said laminating body and communicated with one end of each parallel flow path, and forming a flow-in path for flowing said cooling medium into each parallel flow path; and

    a second side plate joined to a side face of the other end side of said laminating body and communicated with the other end of each parallel flow path, and forming a flow-out path for flowing said cooling medium out of each parallel flow path; and

    said refrigerant flow path is constructed by the flow-in path, each parallel flow path and the flow-out path,wherein a flow-in hole is mounted on the first side plate such that the flow-in hole communicates with the flow-in path and projects in a direction in which the plural grooves on each of the flow path plates are aligned parallel to each other, andwherein a flow-out hole is mounted on the second side plate such that the flow-out hole communicates with the flow-out path and projects in a direction in which the plural grooves on each of the flow path plates are aligned parallel to each other.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×