Title:
REFRIGERATION-TYPE CHILLER
Document Type and Number:
WIPO Patent Application WO/2022/224689
Kind Code:
A1
Abstract:
[Problem] To provide a refrigeration-type chiller suited to gradually changing the temperature of a load to a target temperature over a fixed amount of time. [Solution] The present invention comprises: a coolant circuit 3 that supplies a coolant to a load 2; a refrigeration circuit 4 that adjusts the temperature of the coolant; and a control unit 6 that controls the overall chiller. The control unit 6 comprises: a temperature setting unit 33 that sets the temperature of the coolant as an adjustment target temperature to bring the load 2 to a target temperature; a time setting unit 34 that sets an adjustment time for changing the temperature of the coolant to the adjustment target temperature; a calculation unit 35 that calculates, from the adjustment target temperature and the adjustment time, a temperature change gradient as a target temperature gradient; and a temperature control unit 36 that adjusts the opening degrees of a first electronic expansion valve 24 and a second electronic expansion valve 28 so that the temperature of the coolant changes following the target temperature gradient.
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Inventors:
ADACHI MAKOTO (JP)
Application Number:
PCT/JP2022/013819
Publication Date:
October 27, 2022
Filing Date:
March 24, 2022
Export Citation:
Assignee:
SMC CORP (JP)
International Classes:
G05D23/00; F25B1/00; G05D23/19
Foreign References:
| JP2015014417A | 2015-01-22 | |||
| JP2816054B2 | 1998-10-27 | |||
| JP2691001B2 | 1997-12-17 | |||
| JP2019191841A | 2019-10-31 | |||
| JP2008292026A | 2008-12-04 | |||
| JP2015014417A | 2015-01-22 |
Attorney, Agent or Firm:
HAYASHI Naoki et al. (JP)
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