US 12,439,557 B2
Bellows for immersion cooling
Nihal Joshua, Niagara Falls (CA); Ioannis Manousakis, Zürich (CH); and Jimil Shah, Wylie, TX (US)
Assigned to MTS IP Holdings Ltd, George Town (KY)
Filed by MTS IP Holdings Ltd, Grand Cayman (KY)
Filed on Oct. 16, 2023, as Appl. No. 18/487,782.
Application 18/487,782 is a continuation of application No. 18/318,905, filed on May 17, 2023, granted, now 11,792,956.
Application 18/318,905 is a continuation of application No. PCT/US2023/067056, filed on May 16, 2023.
Prior Publication US 2024/0389268 A1, Nov. 21, 2024
Int. Cl. H05K 7/20 (2006.01); H01L 23/433 (2006.01); H01L 23/44 (2006.01)
CPC H05K 7/20327 (2013.01) [H05K 7/20236 (2013.01); H05K 7/20272 (2013.01); H05K 7/203 (2013.01); H01L 23/4332 (2013.01); H01L 23/44 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method of cooling semiconductor dies in a tank of a two-phase immersion-cooling system, the method comprising:
receiving heat from the semiconductor dies into a coolant liquid within the tank, the coolant liquid filling a portion of the tank below an air space that occupies a top region of the tank, wherein the air space comprises a first portion of a first volume that is normally closed and contains a gas when the two-phase immersion-cooling system is operating;
receiving a first amount of the gas from the air space into a second volume enclosed by a container of a bellows assembly in response to an increase in pressure of the gas in the air space, wherein the second volume comprises a second portion of the first volume, the bellows assembly comprising:
the container,
a gas port mounted to the container and fluidically coupled to the air space, and
an isolation valve fluidically coupled between the gas port and the air space;
deforming a first wall of the container in a first direction to increase the second volume while receiving the first amount of the gas;
closing the isolation valve to isolate the second volume from the air space to prevent a second amount of the gas from flowing into the air space from the second volume and forcing coolant-liquid vapor out of the tank and into an ambient environment around the tank; and
releasing, with a pressure-release valve, a third amount of the gas from the second volume into the ambient environment when pressure of the gas in the container exceeds a threshold value, wherein the pressure-release valve is located within 10 cm of a top edge of the container such that the third amount of the gas released from the second volume contains a lower percentage of coolant-liquid vapor from the coolant liquid used in the two-phase immersion-cooling system than if the pressure-release valve were located at a lower elevation on the container.