Capillary tube heat pipe and temperature controlling apparatus

• US 20030111212A1
• Filed: 12/17/2002
• Published: 06/19/2003
• Est. Priority Date: 12/19/2001
• Status: Active Grant

• Current Assignee: Mizutani Electric Ind. Co., Ltd.
• Original Assignee: TS Heatronics Co., Ltd.
• Inventors: Kaneko, Takashi, Takamizawa, Masayoshi
• Granted Patent: US 6,889,753 B2
• Time in Patent Office: Days
• US Class Current: 165/104.21
• 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: F28D 15/0275 Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
• CPC Class Codes: F28D 15/043 forming loops, e.g. capillary pumped loops
• CPC Class Codes: H01L 23/38 Cooling arrangements using the Peltier effect
• 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

Abstract

A capillary tube heat pipe and the like are provided, in which is applicable for a case that a heat receiving portion is separated apart from a heat radiating portion, and a sufficient space for connecting the both portions does not exist. This capillary tube heat pipe (1) is provided with two turn portions (a heat receiving portion and a heat radiating portion) (3-1) and (3-2) at the both ends thereof and a straight portion (a heat transfer portion) (5) extending between the both turn portions (3), and has a closed loop structure in which both terminals of a single pipe are communicated. Since the heat transfer portion is made from two straight pipes (7) and (9), the straight portion (5) can be small in size.

Claims

1. A capillary tube heat pipe providing with a heat receiving portion, a heat radiating portion and a heat transfer portion connecting said heat receiving portion and said heat radiating portion, and the heat pipe comprising a capillary tube which forms a closed loop as the whole;

wherein said heat transfer portion is constructed from only one pair of going and returning passages.

2. The capillary tube heat pipe according to claim 1, in which said heat receiving portion and/or said heat radiating portion is constructed from a meandering capillary tube (a meandering turn portion) having a plurality of turnings.

3. The capillary tube heat pipe according to claim 2, in which said meandering turn portion is heated or cooled at one turn end side and is cooled or heated at another turn end side so as to cause a working fluid in said meandering turn portion to be evaporated and condensed, thereby increasing a flow force of the working fluid in said meandering turn portion.

4. The capillary tube heat pipe according to one of claim 1 to 3, in which at said heat receiving portion and/or said heat radiating portion, a high heat conductive member (a boss) which transmits heat conduction between the capillary tube and an object to be heated or an object to be cooled is mounted,

said boss is provided with a groove in which the capillary tube of said heat receiving portion and/or said heat radiating portion is embedded.

5. A temperature controlling apparatus comprising a cold heat or a hot heat generating device (a heat generating device) such as a Peltier unit and a capillary tube heat pipe to be arranged between said heat generating device and an object to be cooled or an object to be heated,

wherein said capillary tube heat pipe is provided with a heat receiving portion which is connected to said heat generating device, a heat radiating portion which is connected to said object to be cooled or said object to be heated, and a heat transfer portion connecting said heat receiving portion and said heat radiating portion, and the heat pipe comprising a capillary tube which forms a closed loop as the whole and,

said heat transfer portion is constructed from only one pair of going and returning passages.

6. The temperature controlling apparatus according to claim 5, in which said heat receiving portion and/or said heat radiating portion is constituted from a meandering capillary tube (a meandering turn portion) having a plurality of turnings.

7. The temperature controlling apparatus according to claim 6, in which said meandering turn portion is cooled or heated at one turn end side by said heat generating device, and is heated or cooled at another turn end side by circumference air and/or by medium (for instance, air) for radiating heat produced by a heat generating element of said heat generating device.