Provisioning data center server cooling equipment

Patent metadata

Field	Value
Publication number	US-11197397-B2
Application number	US-202017095554-A
Country	US
Kind code	B2
Filing date	Nov 11, 2020
Priority date	Dec 5, 2018
Publication date	Dec 7, 2021
Grant date	Dec 7, 2021

Abstract

Systems and methods for data center liquid cooling apparatus provisioning are described. In some aspects, such systems and methods may provision one or more data center liquid cooling apparatus, e.g., prior to such apparatus being put into service to a data center to cool data center devices, such as server trays (and more specifically, heat-generating devices such as processors, memories, voltage regulators, and other devices mounted on motherboards of the server trays). In some aspects, such liquid cooling apparatus include cold plates or evaporators that are mounted in thermal communication with the heat generating devices (in the server trays) and utilize a flow of a cooling liquid (e.g., water, glycol, refrigerant) to remove heat from the server tray (e.g., with or without a phase change of the cooling liquid).

First claim

What is claimed is:

1. A data center liquid cooling apparatus provisioning system, comprising:
a housing that defines a volume that is at least partially accessible through one or more openings of the housing;
a cooling liquid flow circuit at least partially enclosed within the volume and comprising:
a cooling liquid supply tank configured to store a volume of a cooling liquid;
a pump coupled to the cooling liquid supply tank and coupled to an outlet configured to connect to a data center liquid cooling apparatus;
a cooling liquid waste tank coupled to an inlet configured to connect to the data center liquid cooling apparatus; and
a sensor in fluid communication with the cooling liquid flow circuit and configured to sense a liquid fill amount of the data center liquid cooling apparatus; and

a control system communicably coupled to the cooling liquid flow circuit and configured to perform operations comprising:
operating the pump to circulate a volume of the cooling liquid from the cooling liquid supply tank to the data center liquid cooling apparatus sufficient to at least fill the data center liquid cooling apparatus; and
based on the sensor indicating that the fill amount of the data center liquid cooling apparatus is above a threshold value, stopping operation of the pump.

2. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the cooling liquid flow circuit further comprises at least one liquid filter positioned between the cooling liquid supply tank and the outlet.

3. The data center liquid cooling apparatus provisioning system of claim 2 , wherein the data center liquid cooling apparatus comprises a liquid cold plate or evaporator configured to thermally couple to one or more data center heat generating devices.

4. The data center liquid cooling apparatus provisioning system of claim 3 , wherein the cooling liquid flow circuit further comprises a first quick disconnect positioned at the outlet and a second quick disconnect positioned at the inlet.

5. The data center liquid cooling apparatus provisioning system of claim 4 , wherein the control system is configured to perform operations further comprising:
determining that the sensor indicates that the fill amount of the data center liquid cooling apparatus is below a threshold value;
operating the pump to circulate at least a portion of the cooling liquid from the cooling liquid supply tank, through the data center liquid cooling apparatus, and into the cooling liquid waste tank; and
based on the sensor indicating that the fill amount of the data center liquid cooling apparatus is above a threshold value, stopping operation of the pump.

6. The data center liquid cooling apparatus provisioning system of claim 4 , further comprising a data center liquid cooling apparatus evacuation assembly fluidly coupled to the cooling liquid flow circuit, the data center liquid cooling apparatus evacuation assembly comprising:
an air compressor;
a pressurized air reservoir fluidly connected to the air compressor;
an air outlet fluidly connected to the outlet of the cooling liquid flow circuit; and
an air valve fluidly connected between the pressurized air reservoir and the air outlet.

7. The data center liquid cooling apparatus provisioning system of claim 6 , wherein the control system is configured to perform operations further comprising:
operating the air compressor to circulate pressurized air into the pressurized air reservoir; and
operating the air valve to release pressurized air through the air outlet, through the outlet of the cooling liquid flow circuit, and into the data center liquid cooling apparatus.

8. The data center liquid cooling apparatus provisioning system of claim 7 , wherein the cooling liquid waste tank is fluidly connected to the air outlet to receive a mixture of cooling liquid and pressurized air from the data center liquid cooling apparatus during flow of the released pressurized air.

9. The data center liquid cooling apparatus provisioning system of claim 2 , wherein the cooling liquid flow circuit further comprises one or more one-way check valves configured to permit a flow of the cooling liquid through the cooling liquid flow circuit in a single direction, and a first check valve of the one or more check valves is positioned between a filter of the cooling liquid flow circuit and the inlet, and a second check valve of the one or more check valves is positioned between the inlet and the cooling liquid waste tank.

10. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the data center liquid cooling apparatus comprises a liquid cold plate or evaporator configured to thermally couple to one or more data center heat generating devices.

11. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the pump comprises a peristaltic pump.

12. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the cooling liquid flow circuit further comprises a first quick disconnect positioned at the outlet and a second quick disconnect positioned at the inlet.

13. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the control system is configured to perform operations further comprising:
determining that the sensor indicates that the fill amount of the data center liquid cooling apparatus is below a threshold value;
operating the pump to circulate at least a portion of the cooling liquid from the cooling liquid supply tank, through the data center liquid cooling apparatus, and into the cooling liquid waste tank; and
based on the sensor indicating that the fill amount of the data center liquid cooling apparatus is above a threshold value, stopping operation of the pump.

14. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the sensor comprises a pressure sensor configured to measure a fluid pressure of the cooling liquid in at least one of the cooling liquid flow circuit or the data center cooling device.

15. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the control system is configured to perform operations further comprising:
operating the pump to circulate the volume of the cooling liquid from the cooling liquid supply tank to the data center liquid cooling apparatus to evacuate at least a portion of a gas inside the data center liquid cooling apparatus into the cooling liquid waste tank.

16. The data center liquid cooling apparatus provisioning system of claim 1 , wherein the cooling liquid flow circuit further comprises one or more one-way check valves configured to permit a flow of the cooling liquid through the cooling liquid flow circuit in a single direction.

17. The data center liquid cooling apparatus provisioning system of claim 16 , wherein a first check valve of the one or more check valves is positioned between a filter of the cooling liquid flow circuit and the inlet, and a second check valve of the one or more check valves is positioned between the inlet and the cooling liquid waste tank.

18. The data center liquid cooling apparatus provisioning system of claim 1 , further comprising a data center liquid cooling apparatus evacuation assembly fluidly coupled to the cooling liquid flow circuit, the data center liquid cooling apparatus evacuation assembly comprising:
an air compressor;
a pressurized air reservoir fluidly connected to the air compressor;
an air outlet fluidly connected to the outlet of the cooling liquid flow circuit; and
an air valve fluid

Assignees

• Google Llc

Inventors

• Chiu Jerry
• Salman Skyler
• Iyengar Madhusudan Krishnan

Classifications

• H05K7/20836

  Thermal management, e.g. server temperature control · CPC title

• H05K7/20781 Primary

  within cabinets for removing heat from server blades · CPC title

• H05K7/20281

  Thermal management, e.g. liquid flow control · CPC title

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• H05K7/20272 Primary

  Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds · CPC title