# US 12,181,193 B2 · Vapor cycle cooling system for high powered devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,193 B2 - Document ID: US12181193B2 - Status: Granted - Kind: B2 - Application number: 17/445,226 - Filed: 2021-08-17 - Published: 2022-02-24 - Granted: 2024-12-31 - Earliest claimed: 2020-08-19 - Assignees: Honeywell International Inc. - Applicants: Honeywell International Inc. - Inventors: Andrew Zug; Jeffrey Troester - Web page: https://patentgrep.com/patent/US12181193B2 ## CPC - F25B 49/02: for compression type machines, plants or systems - F25B 49/022: {Compressor control arrangements} - F25B 1/053: of turbine type - F25B 5/04: arranged in series - F25B 41/325: having two or more valve members - F25B 41/39: Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator - H01S 3/0407: {Liquid cooling, e.g. by water} - H05K 7/20318: {Condensers} - F25B 2400/0409: for evaporators - F25B 2600/0251: with on-off operation - F25B 2700/191: near an expansion valve - F25B 2700/1933: Suction pressures - F25B 2700/197: of the evaporator - F25B 2700/198: Intermediate pressures - F25B 2700/21151: at the suction side of the compressor - F25B 2700/21174: of the refrigerant at the inlet of the evaporator - F25B 2700/2118: at an intermediate pressure position - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A vapor-compression system includes a centrifugal compressor configured to increase a pressure of a refrigerant based on at least one of an activation of a device or the device being equal to or above a first threshold temperature. A fluid communication system is configured to provide, to the device, a portion of the refrigerant in a liquid state. The portion of the liquid refrigerant in a liquid state is configured to have a saturation temperature equal to or below the first temperature threshold. ## Claims ### Claim 1 A vapor-compression system comprising: a centrifugal compressor configured to increase a pressure of a refrigerant based on at least one of an activation of a device or a temperature of the device being equal to or above a first threshold temperature; and a fluid communication system configured to provide, to the device, a portion of the refrigerant in a liquid state, wherein the portion of the refrigerant in the liquid state is configured to have a saturation temperature equal to or below the first temperature threshold. ### Claim 2 (depends on 1) The vapor-compression system of claim 1, wherein the centrifugal compressor is further configured to shut off based on at least one of the device being deactivated or the temperature of the device being equal to or below a second threshold temperature. ### Claim 3 (depends on 1) The vapor-compression system of claim 1, wherein the device comprises a directed energy device. ### Claim 4 (depends on 1) The vapor-compression system of claim 1, wherein the device is configured to output an amount of heat that is greater than a cooling capacity of the vapor-compression system when activated, wherein the device is configured to output an amount of heat that is less than the cooling capacity of the vapor-compression system when deactivated. ### Claim 5 (depends on 4) The vapor-compression system of claim 4, wherein the cooling capacity of the vapor-compression system is equal to or less than 15 kilowatts. ### Claim 6 (depends on 2) The vapor-compression system of claim 2, wherein the fluid communication system is further configured to provide liquid refrigerant having a saturation temperature below the second threshold temperature to a thermal capacitor. ### Claim 7 (depends on 6) The vapor-compression system of claim 6, wherein the thermal capacitor is at least one of a battery, an electronic controller of the device, or a housing of the device. ### Claim 8 (depends on 1) The vapor-compression system of claim 1, further comprising: a first expansion valve configured to reduce a pressure of the refrigerant before the portion of the refrigerant in the liquid state is provided to the device; and a second expansion valve configured to further reduce a pressure of the refrigerant downstream from the first expansion valve. ### Claim 9 (depends on 8) The vapor-compression system of claim 8, wherein the fluid communication system is further configured to cause at least a portion of the refrigerant to bypass the device to the second expansion valve. ### Claim 10 (depends on 1) The vapor-compression system of claim 1, wherein the fluid communication system is configured to provide liquid refrigerant equal to or below the first temperature threshold to the device without a surge valve. ### Claim 11 A method of cooling a device, the method comprising: increasing, via a centrifugal compressor, a pressure of a refrigerant upon at least one of an activation of a device or a temperature of the device being equal to or above a first threshold temperature; and providing, via a fluid communication system, a portion of the refrigerant in a liquid state to the device, wherein the portion of the refrigerant in the liquid state has a saturation temperature equal to or below the first temperature threshold. ### Claim 12 (depends on 11) The method of claim 11, further comprising: shutting off the centrifugal compressor based on at least one of the device being deactivated or the temperature of the device being equal to or below a second threshold temperature. ### Claim 13 (depends on 11) The method of claim 11, wherein the device comprises a directed energy device. ### Claim 14 (depends on 11) The method of claim 11, wherein the device is configured to output an amount of heat that is greater than a cooling capacity of a vapor-compression system when activated, wherein the device is configured to output an amount of heat that is less than the cooling capacity of the vapor-compression system when deactivated. ### Claim 15 (depends on 14) The method of claim 14, wherein the cooling capacity of the vapor-compression system is equal to or less than 15 kilowatts. ### Claim 16 (depends on 12) The method of claim 12, further comprising: providing, via the fluid communication system, liquid refrigerant having a saturation temperature equal to or below the second threshold temperature to a thermal capacitor. ### Claim 17 (depends on 16) The method of claim 16, wherein the thermal capacitor is at least one of a battery, an electronic controller of the device, or a housing of the device. ### Claim 18 (depends on 11) The method of claim 11, further comprising: reducing, via a first expansion valve, a pressure of the refrigerant before the portion of the refrigerant in the liquid state is provided to the device; and reducing, via a second expansion valve, the pressure of the refrigerant downstream from the first expansion valve. ### Claim 19 (depends on 18) The method of claim 18, further comprising: causing, via the fluid communication system, at least a portion of the refrigerant to bypass the device to the second expansion valve. ### Claim 20 A vapor-compression system comprising: a centrifugal compressor configured to increase a pressure of a refrigerant based on at least one of an activation of a device or a temperature of the device being equal to or above a first threshold temperature; a condenser in fluid communication with the centrifugal compressor and configured to remove heat and condense at least a portion of the refrigerant to a liquid state; an expansion valve in fluid communication with the condenser and configured to decrease a pressure of the refrigerant; and a fluid communication system configured to provide, to the device, the portion of the refrigerant in the liquid state, wherein the portion of the liquid refrigerant in the liquid state is configured to have a first saturation temperature equal to or below the first temperature threshold, wherein the fluid communication system is further configured to provide a second portion of the refrigerant in a liquid state to a thermal capacitor downstream from the device, wherein the second portion of the refrigerant in the liquid state has a second saturation temperature equal to or below the first saturation temperature, wherein the centrifugal compressor is further configured to shut off based on at least one of the device being deactivated or the temperature of the device being equal to or below a second threshold temperature.