EBULLIENT COOLING DEVICE

• US 20120111550A1
• Filed: 03/09/2010
• Published: 05/10/2012
• Est. Priority Date: 03/10/2009
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kuno, Hiromichi, Taketsuna, Yasuji, Nakamura, Hideo, Shirai, Mikio, Yamazaki, Takeshi, Ohta, Haruhiko, Shinmoto, Yasuhisa, Suzuki, Koichi, Abe, Yoshiyuki, Kawanami, Osamu
• Application Number:
  US13/254,680
• Publication Number:
  US 20120111550A1
• Time in Patent Office: Days
• US Class Current: 165/181
• CPC Class Codes: F28D 15/0266 with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers F28D15/043 takes precedence
• CPC Class Codes: F28F 3/12 Elements constructed in the shape of a hollow panel, e.g. with channels F28D1/02, F28D1/03 take precedence
• CPC Class Codes: H01L 23/427 Cooling by change of state, e.g. use of heat pipes by liquefied gas H01L23/445
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H05K 7/20936 Liquid coolant with phase change

Abstract

An ebullient cooling device having a simple structure and capable of limiting the bubbles to an appropriate volume. The ebullient cooling device for cooling a heat generating element is provided with a plurality of vertically arranged cooling channels comprising a lower channel (2), a middle channel (3) and un upper channel (4). Each cooling channel has cooling fins (12) for guiding a refrigerant to flow in a vertical direction, and a vapor discharge path (16) formed at the side of the cooling fins (12) that is opposite the side in contact with the heat generating element. Furthermore, flow path partition/vapor discharge guiding plates (18) are provided between the cooling channels so that the bubbles that have been generated are guided to the vapor discharge path (16) and prevented from moving into the subsequent cooling channel.

Claims

1. An ebullient cooling device for cooling a heating body, comprising:

at least first and second cooling channel blocks, both arranged in a vertical direction, comprising;

a cooling fin that causes coolant to flow in the vertical direction;

a vapor discharge path formed on a side of the cooling fin that is opposite to a side in contact with a heating body;

a partition positioned between the cooling fin and the vapor discharge path; and

an opening portion provided at the partition, between the first and second cooling channel blocks;

a guiding portion provided between the first and second cooling channel blocks, the guiding portion formed as a portion of the partition to project from an edge of the opening portion towards the heating body contacting side of the cooling fin, and guiding a bubble generated in the first cooling channel block to the vapor discharge path by preventing the bubble from proceeding into the second cooling channel block; and

a fluid supply pipe provided between the first and second cooling channel blocks for supplying the coolant to the second cooling channel block,

wherein a front edge of the guiding portion contacts with the fluid supply pipe.

2. The ebullient cooling device according to claim 1, wherein

the guiding portion is formed, from the cooling fin of the second cooling channel block, to be tilted towards the cooling fin of the first cooling channel block.

3-5. -5. (canceled)