Title:
MULTI-CHILLER
Document Type and Number:
WIPO Patent Application WO/2020/100206
Kind Code:
A1
Abstract:
[Problem] To provide a chiller having outstanding responsiveness to changes in the temperature of coolant and excellent accuracy of temperature control. [Solution] The multi-chiller comprises: a plurality of coolant circuits 3 and 4 which supply coolants 7 and 8 to loads 5 and 6; a single freezing circuit 2 which adjusts the temperature of the coolants 7, 8; and a control device 10. A plurality of heat exchangers 21 and 22 are connected in parallel to the freezing circuit 2, each of the plurality of heat exchangers 21 and 22 is connected to one of the plurality of coolant circuits 3 and 4, main expansion valves 18 and 19 which supply low-temperature refrigerant are connected to the heat exchangers 21 and 22, and auxiliary expansion valves 27 and 28 which supply high-temperature refrigerant are connected to the heat exchangers 21 and 22, and by having the control device 10 adjust, in a correlated manner, the degree of opening of the main expansion valves 18 and 19 and auxiliary expansion valves 27 and 28 on the basis of the temperature of the coolants 7 and 8, the cooling capacity of each of the heat exchangers 21 and 22 is adjusted, thereby maintaining the temperatures of the coolants 7 and 8 at set temperatures.
Inventors:
SAKAGUCHI TETSUO (JP)
Application Number:
PCT/JP2018/041934
Publication Date:
May 22, 2020
Filing Date:
November 13, 2018
Export Citation:
Assignee:
SMC CORP (JP)
International Classes:
F25B5/02; F25B1/00
Domestic Patent References:
| WO2017110608A1 | 2017-06-29 |
Foreign References:
| JP2006322658A | 2006-11-30 | |||
| JP2009063195A | 2009-03-26 | |||
| JPH10335720A | 1998-12-18 | |||
| JP2004028554A | 2004-01-29 | |||
| JP2011163698A | 2011-08-25 | |||
| JP2003294350A | 2003-10-15 | |||
| JP2006054408A | 2006-02-23 | |||
| JPS62160273U | 1987-10-12 |
Attorney, Agent or Firm:
HAYASHI Hiroshi et al. (JP)
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