Heatsink apparatus

• US 20060171801A1
• Filed: 12/23/2005
• Published: 08/03/2006
• Est. Priority Date: 12/27/2004
• Status: Abandoned Application

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Manabe, Seiji, Kohno, Haruhiko, Sato, Kaoru
• Application Number:
  US11/315,276
• Publication Number:
  US 20060171801A1
• Time in Patent Office: Days
• US Class Current: 415/176
• CPC Class Codes: F04D 13/0673 the motor being of the inside-out type
• CPC Class Codes: F04D 29/588 cooling or heating the machine F04D29/5886, F04D29/5893 take precedence
• CPC Class Codes: H01L 23/473 by flowing liquids H01L23/4332, H01L23/4338 take precedence
• 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 heatsink apparatus has a radiator and a centrifugal pump in a closed circulation channel for circulating a coolant, wherein the centrifugal pump contacting a heat-generating component dissipates heat from the heat-generating component through heat exchange with the coolant. The centrifugal pump includes: a lower casing provided with a contact surface that contacts the heat-generating component; an upper casing; a ring-shaped sealing member provided between the lower and upper casings so as to form a round heat transfer chamber between the ring-shaped sealing member and the lower casing and to form a pump chamber that houses an impeller between the ring-shaped sealing member and the upper casing; a guiding member provided protruding on the lower casing to make the round heat transfer chamber a circulation channel; and the round heat transfer chamber connecting to a through-hole formed in a central portion of the ring-shaped sealing member.

Claims

1. A heatsink apparatus having a radiator and a centrifugal pump in a closed circulation channel for circulating a coolant, the centrifugal pump contacting a heat-generating component and releasing heat from the heat-generating component through heat exchange of the coolant thereinside, the radiator dissipating the heat, the centrifugal pump comprising:

a first casing provided with a contact surface that contacts the heat-generating component;

a second casing fitted to be first casing so as to form a space wherein the coolant flows;

a partition wall member provided between the first and second casings so as to form a heat transfer chamber between the partition wall member and the first casing and to form a pump chamber that houses an impeller between the partition wall member and the second casing;

a coolant inlet connected to the heat transfer chamber;

a coolant outlet connected to the pump chamber; and

the heat transfer chamber connected to the pump chamber through a through-hole formed in a central portion of the partition wall member.

2. The heatsink apparatus according to claim 1, further comprising a guiding member provided between the first casing and the partition wall member of the heat transfer chamber so as to form a flow channel of the coolant.

3. The heatsink apparatus according to claim 2, wherein the guiding member comprises:

a C-shaped cylindrical portion that circulates the incoming coolant in the vicinity of the through-hole; and

a linear guiding plate that directs the coolant from an outer peripheral side of the first casing to the through-hole located on an inner side of the first casing.

4. The heatsink apparatus according to claim 3, wherein a plurality of heat-dissipating fins are provided in the heat transfer chamber on a surface opposite to the contact surface, protruding from the first casing toward the partition wall member.

5. The heatsink apparatus according to claim 1, wherein the partition wall member is slanted so that a distance between the first casing and the partition wall member in the heat transfer chamber is shorter in a central portion of the heat transfer chamber.

6. A heatsink apparatus having a radiator and a centrifugal pump in a closed circulation channel for circulating a coolant, the centrifugal pump contacting a heat-generating component and releasing heat from the heat-generating component through heat exchange of the coolant thereinside, the radiator dissipating the heat, the centrifugal pump comprising:

a first casing provided with a contact surface that contacts the heat-generating component;

a second casing fitted to the first casing so as to form a space wherein the coolant flows;

a partition wall member provided between the first and second casings so as to form a heat transfer chamber between the partition wall member and the first casing and to form a pump chamber that houses an impeller between partition wall member and the second casing;

a coolant inlet connected to the heat transfer chamber;

a coolant outlet connected to the pump chamber;

through-holes formed in the partition wall member so as to connect the heat transfer chamber and the pump chamber; and

a pair of guiding plates provided in the heat transfer chamber so as to direct the coolant from the inlet to a central portion of the heat transfer chamber.

7. The heatsink apparatus according to claim 6, wherein the though-holes in the partition wall member are disposed outside the pair of guiding plates.

8. The heatsink apparatus according to claim 6, wherein the guiding plates extend from the inlet of the heat transfer chamber beyond the center of the heat transfer chamber.

9. The heatsink apparatus according to claim 6, wherein a flow separation wall is provided in the heat transfer chamber so as to separate the coolant passing through the guiding plates into two directions in the heat transfer chamber.

10. The heatsink apparatus according to claim 6, wherein the though holes in the partition wall member are disposed in two locations outside the pair of guiding plates.

11. The heatsink apparatus according to claim 6, wherein a plurality of heat-dissipating fins are provided in the heat transfer chamber on a surface opposite to the contact surface, protruding from the first casing toward the partition wall member.