Systems and devices for asynchronous operation in a server chassis for minimizing cooling liquid leakage

Patent metadata

Field	Value
Publication number	US-11800680-B2
Application number	US-202117355617-A
Country	US
Kind code	B2
Filing date	Jun 23, 2021
Priority date	Jun 23, 2021
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A system for managing liquid leakage comprises a fluid module, which includes a supply fluid connector to receive cooling fluid from a rack manifold coupled to an external fluid source and to supply the cooling fluid to an information technology (IT) load of the server chassis, and a return fluid connector to receive cooling fluid from the IT load of the server chassis and to return the cooling fluid to the rack manifold and then to the external fluid source, forming a fluid loop, packaged with different energy storage units. When a liquid leakage is detected by a sensor in the server chassis, an electromagnetic unit coupled to the supply and return fluid connectors causes the first fluid connector to be pushed away from the rack manifold to disconnect the fluid loop on a supply side, and causes the return fluid connector to be disconnected from the rack manifold on a return side after a predetermined period of time after the supply fluid connector has been disconnected.

First claim

What is claimed is:

1. A system for managing liquid leakage in a server chassis, comprising:
a fluid module, including
a first fluid connector to receive cooling fluid from a supply rack manifold coupled to an external fluid source and to supply the cooling fluid to an information technology (IT) load of the server chassis, and
a second fluid connector to receive cooling fluid from the IT load of the server chassis and to return the cooling fluid to a return rack manifold and then to the external fluid source, forming a fluid loop;

an electromagnetic unit coupled to the first and second fluid connectors, and in communication with control circuitry for the electromagnetic unit, wherein the control circuitry is configured to provide power to the electromagnetic unit; and
a sensor coupled to the server chassis and the control circuitry for the electromagnetic unit, wherein the sensor is configured to detect a liquid leakage from the fluid loop in the server chassis,
wherein in response to detecting the liquid leakage, the sensor is caused to control the control circuitry to control the electromagnetic unit to thereby cause the first fluid connector to be pushed away from the supply rack manifold to disconnect the fluid loop on a supply side, and the electromagnetic unit is further controlled to cause the second fluid connector to be disconnected from the return rack manifold on a return side after a predetermined period of time as determined by the control circuitry after the first fluid connector has been disconnected.

2. The system of claim 1 , wherein the electromagnetic unit comprises:
a first electromagnetic device coupled to the first fluid connector;
a second electromagnetic device coupled to the second fluid connector;
wherein each of the first electromagnetic device and the second electromagnetic device is to push its corresponding fluid connector towards or away from the supply rack manifolds individually based on whether the respective electromagnetic device is being powered.

3. The system of claim 2 , wherein in response to the sensor detecting the liquid leakage, the control circuitry is controlled by the sensor to cut off the first electromagnetic device from a direct current (DC) source to cause the first fluid connector to be pushed away, due to loss of magnetic force, from the supply rack manifold to disconnect the fluid loop on the supply side, and the second electromagnetic device continues to be powered to keep the second fluid connector connected to the return rack manifold on the return side for the predetermined period of time.

4. The system of claim 3 , wherein the control circuitry comprises at least:
an energy storage unit coupled to the DC source, wherein the DC source is to recharge the energy storage unit when the DC source is connected to the fluid module;
wherein the second electromagnetic device continuing to be powered includes the second electromagnetic device being powered by the energy storage unit to keep the second fluid connector connected to the server chassis on the return side for the predetermined period of time.

5. The system of claim 4 , wherein the fluid module further includes a first connector holder, and a second connector holder, wherein the first connector holder holds the first electromagnetic device and the first fluid connector, and the second connector holder holds the second electromagnetic device, the second fluid connector, and the energy storage unit.

6. The system of claim 2 , wherein the fluid module further includes an energy storage unit as a separate energy storage unit.

7. The system of claim 2 , wherein the first electromagnetic device and the second electromagnetic device are powered by a same DC source.

8. The system of claim 2 , wherein each of the first electromagnetic device and the second electromagnetic device is powered by a different DC source, wherein the control circuitry includes at least a switch to switch on and off the DC source that powers the first electromagnetic device, and wherein the DC source that powers the second electromagnetic devices is not controllable by the switch.

9. The system of claim 8 , wherein the sensor is coupled to the server chassis via a communication port, wherein the sensor is to control the switch via a baseboard management controller (BMC).

10. The system of claim 2 , wherein each of the first electromagnetic device and the second electromagnetic device comprises an electromagnet.

11. The system of claim 1 , wherein the server chassis includes a cooling module with a first connector interface and a second connector interface, which are connected with the first fluid connector and the second fluid connector respectively.

12. The system of claim 1 , wherein each of the first fluid connector and the second fluid connector is a blind mating connector.

13. The system of claim 1 , wherein the server chassis includes a power interface configured to be mated with a power interface of the fluid module, wherein the power interface of the fluid module is a blind mating connector.

14. A server rack, comprising:
a supply rack manifold to receive cooling fluid from an external fluid source;
a return rack manifold to return the cooling fluid to the external fluid source; and
a plurality of server chassis, wherein each of the plurality of server chassis includes:
a fluid module, including
a first fluid connector to receive the cooling fluid from the supply rack manifold and to supply the cooling fluid to an information technology (IT) load of the server chassis, and
a second fluid connector to receive cooling fluid from the IT load of the server chassis and to return the cooling fluid to the return rack manifold and then to the external fluid source, forming a fluid loop;

an electromagnetic unit coupled to the first and second fluid connectors, and in communication with control circuitry for the electromagnetic unit, wherein the control circuitry is configured to provide power to the electromagnetic unit; and
a sensor coupled to the server chassis and the control circuitry for the electromagnetic unit, wherein the sensor is configured to detect a liquid leakage from the fluid loop in the server chassis,
wherein in response to detecting the liquid leakage, the sensor is caused to control the control circuitry to control the electromagnetic unit to thereby cause the first fluid connector to be pushed away from the supply rack manifold to disconnect the fluid loop on a supply side, and the electromagnetic unit is further controlled to cause the second fluid connector to be disconnected from the return rack manifold on a return side after a predetermined period of time as determined by the control circuitry after the first fluid connector has been disconnected.

15. The server rack of claim 14 , wherein each server chassis further comprises:
a first electromagnetic device coupled to the first fluid connector,
a second electromagnetic device coupled to the second fluid connector,
wherein each of the first electromagnetic device and the second electromagnetic device is to push its corresponding fluid connector horizontally towards or away from the supply rack manifold and return rack manifold respectively based on whether that motion device is being powered.

16. The server rack of claim 15 , wherein in response to the sensor detecting the liquid leakage, the control circuitry is controlled by the sensor to cut off the first electromagnetic device from a direct current (DC) source to cause the first fluid connector to be pushed away, due to loss of magnetic force, from the supply rack manifo

Assignees

• Baidu Usa Llc

Inventors

• Gao Tianyi

Classifications

• 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

• H05K7/20281

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

• G06F1/20

  Cooling means · CPC title

• H05K7/20763 Primary

  Liquid cooling without phase change · CPC title

• H05K7/20836

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