# US 2018/0320982 A1 · Cooling device and cooling system

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- Number: US 2018/0320982 A1
- Document ID: US20180320982A1
- Status: Published application
- Kind: A1
- Application number: 15/768,341
- Filed: 2016-10-14
- Published: 2018-11-08
- Earliest claimed: 2015-10-15
- Assignees: NEC Platforms, Ltd.
- Applicants: NEC Platforms, Ltd.
- Inventors: Yasuhito NAKAMURA; Shunsuke FUJII
- Web page: https://patentgrep.com/patent/US20180320982A1

## CPC

- 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)}
- F28D 15/0241: {the tubes being flexible}
- F28D 15/0275: {Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores}
- H05K 7/20818: {within cabinets for removing heat from server blades}
- F28D 2021/0028: {for cooling heat generating elements, e.g. for cooling electronic components or electric devices}
- H10W 40/73: for cooling by change of state
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

[Problem] To minimize any increase in space for installation. [Solution] A cooling device 120 according to the present invention is provided with: an evaporator 127 positioned on a rear-surface door provided in a casing 121 in such a manner as to allow opening and closing; a refrigerant relay 112 provided above the casing 121 to connect with the evaporator; and a bendable flexible tube 123, one end of which being connected to the evaporator 127 and the other end of which being connected to a side of the refrigerant relay 112 that is different from the side in which the evaporator 127 is positioned. At least a part of the flexible tube 123 is positioned below the refrigerant relay 112 so as to cross the refrigerant relay 112.

## Claims

### Claim 1

A cooling device, comprising:
an evaporator that is disposed on a rear-surface door that is mounted on a casing in an openable and closable manner;
a refrigerant relay that is placed above the casing and connected to a condenser; and
a freely bendable flexible tube one end and the other end of which are connected to the evaporator and a side of the refrigerant relay different from a side of the refrigerant relay on which the evaporator is disposed, respectively, wherein
at least a portion of the flexible tube is disposed below the refrigerant relay so as to cross the refrigerant relay in a grade-separated manner.

### Claim 2 (depends on 1)

The cooling device according to claim 1, wherein the refrigerant relay is positioned at substantially a middle above the casing.

### Claim 3 (depends on 1)

The cooling device according to claim 1, wherein the flexible tube is disposed having a plurality of bend parts.

### Claim 4 (depends on 1)

The cooling device according to claim 1, wherein at least a portion of the flexible tube is formed to extend obliquely upward from a region of the flexible tube positioned below the refrigerant relay toward the refrigerant relay.

### Claim 5 (depends on 1)

The cooling device according to claim 1, wherein a side of the refrigerant relay different from a side of the refrigerant relay on which the evaporator is disposed is positioned on a front-surface side of the casing.

### Claim 6 (depends on 1)

The cooling device according to claim 1, comprising
a plurality of the evaporators, wherein
each of the plurality of the evaporators is connected to the refrigerant relay by means of the flexible tube.