Cooling system

Patent metadata

Field	Value
Publication number	US-12501581-B2
Application number	US-202218284671-A
Country	US
Kind code	B2
Filing date	Feb 14, 2022
Priority date	Apr 1, 2021
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A cooling system of the present disclosure includes: a coolant tank storing a coolant removing heat from a heating element in a closed space as an inner space; a plurality of heat pipes that are arranged to extend from the coolant tank toward the outside of the coolant tank and respectively having passages allowing the coolant as a working fluid to be movable therethrough; and a blower fan blowing air to the plurality of heat pipes from the outside of the coolant tank in a direction in which the heat pipes are arranged, wherein a cross-sectional shape orthogonal to the extension direction of each heat pipe is a flat plate shape having a leading edge on an upstream side of a blowing direction of the blower fan and a trailing edge on a downstream side thereof with the blowing direction as a longitudinal direction.

First claim

What is claimed is:

1 . A cooling system comprising:
a heat exchange unit including a heat transfer pipe group which includes a plurality of heat transfer pipes linearly extending in a vertical direction and having an air passage formed therein and in which coolant passages are formed between the heat transfer pipes by bundling the heat transfer pipes at intervals, a casing covering the heat transfer pipe group so that both ends of each heat transfer pipe open to the outside, a coolant supply section supplying a coolant into the casing, and a coolant discharge section discharging the coolant from the inside of the casing; and an air blower that is provided below the heat exchange unit and blowing air to the heat transfer pipe group from below, wherein the air blower includes an impeller that is rotatable around an axis extending in a vertical direction and a drive unit that is disposed below the impeller and rotationally driving the impeller, and wherein the cooling system further comprises:
an upper housing having a tubular shape extending in a vertical direction to surround the impeller from an outer peripheral side, forms an air flow path therein, and has an upper end connected to a lower end of the heat exchange unit; and
a lower housing including an inner annular wall decreasing in diameter upward while covering the drive unit from an outer peripheral side and an outer annular wall decreasing in diameter upward while covering the inner annular wall from an outer peripheral side and forming an air introduction flow path to the impeller together with the inner annular wall.

2 . The cooling system according to claim 1 ,
wherein the heat transfer pipe includes an inner surface fin that is protruded from an inner peripheral surface of the heat transfer pipe and extends in a vertical direction.

3 . The cooling system according to claim 1 ,
wherein the casing includes a tubular portion surrounding the heat transfer pipe group from an outer peripheral side, an upper header that is formed in an annular shape surrounding the tubular portion from an outer peripheral side at an upper portion of the tubular portion and is provided with one of the coolant supply section and the coolant discharge section, and a lower header that is formed in an annular shape surrounding the tubular portion from an outer peripheral side at a lower portion of the tubular portion and is provided with the other of the coolant supply section and the coolant discharge section, and wherein the tubular portion includes a plurality of upper communication holes that are formed at intervals in a circumferential direction for communicating between an inner space of the upper header and an inner space of the tubular portion and a plurality of lower communication holes that are formed at intervals in a circumferential direction for communicating between an inner space of the lower header and the inner space of the tubular portion.

4 . The cooling system according to claim 1 ,
wherein the heat exchange unit further includes a resistor extending in a horizontal direction with a predetermined horizontal gap with respect to an outer peripheral surface of the heat transfer pipe inside the coolant passage.

5 . The cooling system according to claim 4 ,
wherein the resistor is formed so that a gap between the resistor and the heat transfer pipe is increased from an outside to an inside in a radial direction of the heat exchange unit.

6 . The cooling system according to claim 1 ,
wherein the heat exchange unit further includes a closing portion closing a space between an inner surface of the casing and an outermost surface of the heat transfer pipe group.

7 . The cooling system according to claim 1 ,
wherein at least a part of the upper housing and the lower housing is formed by a sound absorbing material.

8 . The cooling system according to claim 1 , further comprising:
a rectifier that is provided in an air flow path inside the upper housing and has a plurality of rectifying holes arranged in a horizontal direction to penetrate in a vertical direction.

9 . The cooling system according to claim 1 , further comprising:
a water supply unit supplying water to an air flow path inside the upper housing.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Hara Nobuhide
• Otani Yuichi
• Uchida Sumiu
• Suzuta Tadahiko
• Kitamoto Hiroko
• Hayashi Kentaro
• Imai Atsushi

Classifications

• H05K7/20936

  Liquid coolant with phase change · CPC title

• H05K7/20136

  Forced ventilation, e.g. by fans (H05K7/202 takes precedence) · CPC title

• H05K7/203

  by immersion · CPC title

• H05K7/20818

  within cabinets for removing heat from server blades · CPC title

• F28F1/32

  the means having portions engaging further tubular elements · CPC title