Switch cabinet arrangement with at least one IT rack or switch cabinet housing and with at least one cooling unit, and a corresponding method

Patent metadata

Field	Value
Publication number	US-11758694-B2
Application number	US-202017762460-A
Country	US
Kind code	B2
Filing date	Sep 23, 2020
Priority date	Sep 23, 2019
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

The invention relates to a switch cabinet arrangement with at least one IT rack or switch cabinet housing and with at least one cooling device, which has an air-liquid heat exchanger for cooling components accommodated in the IT rack or switch cabinet housing with cooled air, wherein the air-liquid heat exchanger comprises a first flow for cooled liquid and a first return for heated liquid, wherein the cooling device comprises a liquid-liquid heat exchanger, to the second flow of which the first return of the air-liquid heat exchanger is connected. A corresponding method is further described.

First claim

The invention claimed is:

1. A switch cabinet arrangement having at least one IT rack or switch cabinet housing and having at least one cooling device which has a first air-liquid heat exchanger for cooling components accommodated in the IT rack or switch cabinet housing with cooled air, wherein the first air-liquid heat exchanger comprises a first flow for cooled liquid and a first return for heated liquid, characterized in that the cooling device comprises a liquid-liquid heat exchanger of a liquid cooling of the components, to the second flow of which the first return of the first air-liquid heat exchanger is connected, wherein a first of the two liquids passed through the liquid-liquid heat exchanger has a boiling point under standard conditions that is below the boiling point of a second of the two liquids passed through the liquid-liquid heat exchanger, and wherein the second liquid is the liquid passed through the first air-liquid heat exchanger.

2. The switch cabinet arrangement of claim 1 , wherein the first air-liquid heat exchanger is part of a first cooling circuit and the liquid-liquid heat exchanger is part of a second cooling circuit separate from the first cooling circuit.

3. The switch cabinet arrangement of claim 1 , wherein the liquid passed through the first air-liquid heat exchanger is water or a liquid comprising mostly water.

4. The switch cabinet arrangement according to claim 1 , wherein the boiling point of the first liquid is at least 20 K, more preferably at least 30 K, and most preferably at least 40 K below the boiling point of the second liquid.

5. The switch cabinet arrangement of claim 4 , wherein the first of the two liquids passed through the liquid-liquid heat exchanger is or comprises a perfluorinated chemical compound, preferably a compound derived from ethyl isopropyl ketone, more preferably perfluoro(2-methyl-3-pentanone), C 6 F 12 O.

6. The switch cabinet arrangement of claim 4 , wherein the first of the two liquids passed through the liquid-liquid heat exchanger is introduced from a third return of the liquid-liquid heat exchanger into a liquid-carrying heat conducting body for conduction cooling.

7. The switch cabinet arrangement of claim 6 , wherein the first of the two liquids passed through the liquid-liquid heat exchanger is introduced from the liquid-carrying heat conducting body into a third flow of the liquid-liquid heat exchanger.

8. The switch cabinet arrangement according to claim 1 , wherein the liquid-liquid heat exchanger is the cooling zone of a heat pipe or a manifold.

9. The switch cabinet arrangement of claim 8 , wherein the heat pipe or the manifold comprises a down pipe and a riser pipe, which are formed as fluidically separated vertical pipes or are fluidically connected to each other in a lowermost region of the heat pipe via a siphon.

10. The switch cabinet arrangement of claim 8 , wherein the heat pipe includes a down pipe into which first liquid cooled from the liquid-to-liquid heat exchanger is introduced.

11. The switch cabinet arrangement of claim 8 , wherein the heat pipe comprises a riser pipe into which heated first liquid is introduced.

12. The switch cabinet arrangement according to claim 1 , wherein liquid cooled by a recooler, for example a chiller, is introduced into the air-liquid heat exchanger via the first flow for cooled liquid.

13. The switch cabinet arrangement of claim 12 , wherein the cooled liquid is introduced into the recooler as a heated liquid from the liquid-to-liquid heat exchanger.

14. The switch cabinet arrangement according to claim 1 , wherein the cooling device is a cooling device arranged in a row of IT racks or switch cabinet housings, via the rear side or front side of which hot air is drawn in from a hot aisle and blown out as cooled air into a cold aisle via the side opposite the rear side or front side.

15. The switch cabinet arrangement according to claim 1 , wherein the air-liquid heat exchanger of the first circuit and the liquid-liquid heat exchanger of the second circuit are accommodated in a rear or front door of the IT rack or the switch cabinet housing, wherein the air-liquid heat exchanger and the liquid-liquid heat exchanger have air flowing through them, which enters the IT rack or the switch cabinet housing on a side arranged opposite the rear or front door.

Assignees

• Rittal Gmbh & Co Kg

Inventors

• Himmelhuber Frank
• Matthies Stephan Helmut
• Meyer Andreas

Classifications

• H05K7/20736 Primary

  within cabinets for removing heat from server blades · CPC title

• H05K7/20781 Primary

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• H05K7/20772

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• H05K7/20809

  within server blades for removing heat from heat source · CPC title

• H05K7/20818

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