Patent ID: 9727101
Date: 2017-08-08
CPC Classifications: F28D,G06F,H05K

Claim:
1. A cooling apparatus for electronic-device exhaustion which cools exhaust air from an electronic device loaded in a rack by endothermic action of a coolant circulating via a condenser unit, the cooling apparatus comprising: a plurality of evaporator units disposed in the rack along a height direction of the rack, and configured to cause a coolant fluid filled in each evaporator unit to vaporize and produce a coolant vapor by heat of exhaust air flowing in and passing through the each evaporator unit to cool the exhaust air; a fluid pipe that is a supply route of the coolant fluid to the each evaporator unit; and a vapor pipe that is a discharging route of the coolant vapor from the each evaporator unit, wherein: the fluid pipe is provided on a surface of one side portion of the each evaporator unit, is coupled to an end of the one side portion on a lower part of the each evaporator unit, and is connected to the condenser unit, the vapor pipe includes a plurality of branched vapor pipes, each of the plurality of branched vapor pipes is a straight pipe and is provided on a surface of another side portion of the each evaporator unit and is coupled to an end of the another side portion on an upper part of the each evaporator unit, the one side portion and the another side portion are disposed on different sides of the each evaporator unit, the condenser unit is connected to and disposed above the cooling apparatus, the vapor pipe is connected to the condenser unit without having a portion downwardly extending from the plurality of evaporator units to the condenser unit, and a length of the each evaporator unit in the height direction of the rack is any of 2 U, 3 U, and 4 U, where 1 U is a unit of the height of the rack, in accordance with a position where the each evaporator unit is disposed in the height direction of the rack, wherein the each evaporator unit comprises: wherein each of the coolant tubes is a straight piping, wherein the each evaporator units are disposed in a manner forming at least double layers of the evaporator units in a direction in which the exhaust air passes through, wherein the double layers dispose the plurality of evaporator units configuring respective layers in a zig-zag layout to each other in the height direction of the rack, wherein the zig-zag layout is an arrangement of first evaporator units and second evaporator units among the plurality of evaporator units such that the first evaporator units adjoin in the height direction of the rack to configure a first layer of the double layers, and the second evaporator units adjoin in the height direction of the rack to configure a second layer of the double layers, so that exhaust air passing through a space between the first evaporator units or exhaust air passing through an upper part of one of the first evaporator units passes through a lower part of any of the second evaporator units, the upper part having a first predetermined length and located downwardly from a space between the first evaporator units, the lower part having a second predetermined length.