US 12,359,878 B2
Dryout detection for cooling device
Shunsuke Sekimoto, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 17/438,082
Filed by Shimadzu Corporation, Kyoto (JP)
PCT Filed Mar. 15, 2019, PCT No. PCT/JP2019/010937
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2020/188651, PCT Pub. Date Sep. 24, 2020.
Prior Publication US 2022/0236018 A1, Jul. 28, 2022
Int. Cl. F28D 15/00 (2006.01); F28D 15/06 (2006.01)
CPC F28D 15/06 (2013.01) 9 Claims
OG exemplary drawing
 
1. A cooling device for performing cooling by utilizing latent heat of vaporization without using a compressor, the cooling device comprising:
a liquid feeding unit configured to feed a refrigerant;
an evaporator configured to evaporate the fed refrigerant;
a condenser configured to condense the evaporated refrigerant;
a controller configured to control a flow rate of the refrigerant;
a first temperature sensor configured to acquire a temperature of a wall of the evaporator; and
a second temperature sensor configured to acquire a refrigerant temperature in a refrigerant flow path of the evaporator and is different from the first temperature sensor,
wherein the controller is configured to determine whether or not dryout has occurred based on a difference between the temperature of a wall of the evaporator acquired by the first temperature sensor and the refrigerant temperature in the refrigerant flow path of the evaporator acquired by the second temperature sensor, the dryout being defined as a state in which a gas-phase refrigerant is in contact with an inner surface of the refrigerant flow path of the evaporator, and
wherein the first temperature sensor and the second temperature sensor are provided in the vicinity of an outlet of the evaporator.