US 12,460,851 B2
Refrigeration-type chiller
Makoto Adachi, Tsukubamirai (JP)
Assigned to SMC CORPORATION, Chiyoda-ku (JP)
Appl. No. 18/555,453
Filed by SMC CORPORATION, Chiyoda-ku (JP)
PCT Filed Mar. 24, 2022, PCT No. PCT/JP2022/013819
§ 371(c)(1), (2) Date Oct. 13, 2023,
PCT Pub. No. WO2022/224689, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 2021-071969 (JP), filed on Apr. 21, 2021.
Prior Publication US 2024/0200842 A1, Jun. 20, 2024
Int. Cl. F25B 49/02 (2006.01)
CPC F25B 49/02 (2013.01) [F25B 2600/2513 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A refrigeration-type chiller comprising:
a coolant circuit that supplies a temperature-regulated coolant to a load;
a refrigeration circuit that adjusts a temperature of the coolant through a heat exchange between the coolant and a refrigerant;
a heat exchanger that exchanges heat between the coolant and the refrigerant; and
a control unit that controls the chiller as a whole,
wherein
the coolant circuit includes a tank in which the coolant is stored, a pump that supplies the coolant in the tank to the load, and a temperature sensor that measures the temperature of the coolant, and
the control unit includes a temperature setting unit that sets an initial set temperature and an adjustment target temperature of the coolant for changing a temperature of the load to a target temperature, a time setting unit that sets an adjustment time for changing the temperature of the coolant from the initial set temperature to the adjustment target temperature, an arithmetic unit that calculates a gradient of temperature change as a target temperature gradient from the initial set temperature, the adjustment target temperature, and the adjustment time, and a temperature control unit that so adjusts a temperature of the refrigerant that is supplied to the heat exchanger that the temperature of the coolant changes in accordance with the target temperature gradient.