IP Library Granted Patent US 12,408,308
Granted Patent B2
US 12,408,308 · App. 17/136,474 · Granted Sep 2, 2025

Hydrofire rods for liquid immersion cooling platform

Inventors: John David Enright (Plano, TX); Jacob Mertel (Plano, TX)
Assignee: MODINE LLC
H05K7/20836G05B13/021H05K7/203H05K7/208
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Quick Facts
Patent No.
US 12,408,308
App. No.
17/136,474
Filed
Dec 29, 2020
Granted
Sep 2, 2025
Kind
B2
Art Unit
2115
USPC
700/300
Abstract

A two-phase liquid immersion cooling system is described in which heat generating computer components cause a dielectric fluid in its liquid phase to vaporize. The dielectric vapor is then condensed back into a liquid phase and used to cool the computer components. Heating elements are used to maintain a minimum temperature of a dielectric immersion fluid within a two phase liquid immersion cooled computing system. The added heat from heating elements may facilitate startup by minimizing the amount of vapor load/pressure when starting up the unit and bringing one or more servers on line.

Claims (53)

1. A system comprising:

a tank, wherein the tank is configured to hold a liquid phase and a gas phase of a fluid;

a structure within the tank configured to hold one or more computer components to be at least partially submerged within the liquid phase of the fluid during an operation of the system, the one or more computer components configured to process data;

a vapor recovery system in fluid communication with the tank and configured to receive and condense the gas phase of the fluid into the liquid phase of the fluid to maintain pressure equilibrium within the tank;

a heating element configured to heat the liquid phase of the fluid in the tank; and

a controller configured to regulate the heating element,

wherein the controller is further configured to:

receive data relating to an operational load of the one or more computer components, a temperature, or both; and

regulate the heating element based on the operational load of the one or more computer components, the temperature, or both;

wherein the vapor recovery system comprises a bellows configured to receive the gas phase of the fluid,

wherein the bellows is operable to reduce pressure build up in the tank; and

wherein the controller is further configured to receive data relating to a size of the bellows, and

wherein the controller is further configured to regulate the heating element based on the size of the bellows.

2. The system of claim 1 , wherein the heating element is configured to be fully submerged within the liquid phase during an operation of the system.

3. The system of claim 1 , wherein the system further comprises a temperature sensor or a pressure sensor wherein said sensor is operatively linked to the controller.

4. The system of claim 1 , wherein the controller is configured to cause the heating element to heat the liquid phase of the fluid during or before a startup operation.

5. The system of claim 1 , wherein the controller is configured to cause the heating element to heat the liquid phase of the fluid when a temperature of the liquid phase of the fluid is below a threshold temperature.

6. The system of claim 1 , wherein the controller is configured to cause the heating element to heat the liquid phase of the fluid during or before a boost operation.

7. The system of claim 6 , wherein the boost operation is identified by the controller in response to an indication that there will be an increase in the operational load of the one or more computer components.

8. The system of claim 1 , further comprising a pressure management system, wherein the controller is configured to activate the pressure management system.

9. The system of claim 1 , wherein the controller is configured to operate the heating element to maintain a temperature of the liquid phase of the fluid within a threshold range below a boiling point of the fluid.

10. The system of claim 1 , wherein the heating element is incapable of processing data.

11. The system of claim 1 , wherein each computer component is selected from the group consisting of a motherboard, a chip, a server, an interface card, a blade server, a GPU, and a CPU.

12. The system of claim 1 , wherein the structure is a rack comprising a power supply, a data interface, and a plurality of chassis, wherein the one or more computer components are installed within the chassis, and wherein the chassis is configured to be removed and replaced while the system continues to cool remaining computer components of the one or more computer components.

13. A method for cooling computer components comprising:

operating one or more computer components in an immersion cooling system configured to cool the computer components,

receiving sensor data relating to an operational load of the one or more computer components, a temperature, or both, from a sensor located in a tank, wherein the tank is configured to hold:

(a) a liquid phase and a gas phase of a fluid in a bath area of the tank;

(b) the one or more computer components at least partially submerged in the liquid phase of the fluid in the bath area, the one or more computer components configured to process data;

(c) a heating element at least partially submerged in the liquid phase of the fluid in the bath area; and

(d) the sensor;

activating the heating element based on the sensor data;

removing and replacing one or more of the one or more computer components while the immersion cooling system continues to cool remaining computer components of the one or more computer components; and

deactivating the heating element based on the sensor data.

14. The method of claim 13 , further comprising:

detecting a mode of operation of the one or more computer components, wherein the mode of operation is a startup mode, a boost mode, a slowdown mode, or a shutdown operation.

15. The method of claim 14 , wherein the startup mode is when the one or more computer components were inactive for a period of time prior to operating the one or more computer components.

16. The method of claim 14 , wherein the boost mode is when the operational load of the one or more computer components is expected to increase.

17. The method of claim 13 , wherein the immersion cooling system includes an opening configured to allow access to the one or more computer components without disrupting the atmosphere within the system.

18. The method of claim 17 , wherein the opening is a movable lid.

19. A two-phase liquid immersion cooling system for cooling computer components, the two-phase liquid immersion cooling system including:

a heating element within a bath area of a tank of the two-phase liquid immersion cooling system, wherein the heating element does not process data and comprises:

a plurality of heating rods configured to be at least partially submerged in two phase dielectric fluid within the bath area of the tank;

a power source operably connected to the plurality of heating rods for powering the heating element; and

a controller operably connected to receive data from one or more sensors,

wherein the controller is configured to activate or deactivate the heating element based on data received from the one or more sensors, and

wherein the controller is configured to maintain a constant temperature of the two-phase liquid immersion cooling system for cooling computer components while the workload of the computer components varies,

wherein the controller is configured to cause the heating element to heat the liquid phase of the fluid during or before a boost operation, and

wherein the boost operation is identified by the controller in response to an indication that there will be an increase in an operational load of the one or more computer components.

20. The two-phase liquid immersion cooling system of claim 19 wherein the one or more sensors are selected from a temperature sensor, a pressure sensor, a current sensor, a voltage sensor, a workload sensor, and combinations thereof.

21. The two-phase liquid immersion cooling system of claim 19 further including a filter configured to remove contaminants, particles, substances, diluents, and solutes from the two-phase liquid immersion cooling system.

22. The two-phase liquid immersion cooling system of claim 21 , wherein the filter includes one or more cores, the one or more cores including an absorbent material.

23. The two-phase liquid immersion cooling system of claim 22 , wherein the absorbent material includes at least one of activated aluminum and activated carbon.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 12, 2024
From: TMGCORE, INC.
To: MODINE LLC
Reel/Frame 066553/0560 →
SECURITY INTEREST Recorded May 23, 2023
From: TMGCORE, INC.
To: MODINE MANUFACTURING COMPANY
Reel/Frame 063730/0315 →
CERTIFICATE OF CONVERSION Recorded Jul 26, 2021
From: TMGCORE, LLC
To: TMGCORE, INC.
Reel/Frame 056981/0860 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 15, 2021
From: ENRIGHT, JOHN DAVID; MERTEL, JACOB
To: TMGCORE, LLC
Reel/Frame 055935/0274 →
Continuity (6)
Continuation PCTUS2019060759 · Nov 11, 2019
Provisional Application 62897457 · Sep 9, 2019
Provisional Application 62875222 · Jul 17, 2019
Provisional Application 62815682 · Mar 8, 2019
Provisional Application 62768633 · Nov 16, 2018
Related Publication 20210120705A1 · Apr 22, 2021
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