Title:
CHILLING UNIT AND WATER-CIRCULATING TEMPERATURE-ADJUSTMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/211682
Kind Code:
A1
Abstract:
A chilling unit and a water-circulating temperature-adjustment system are provided with: a refrigerant circuit including a compressor, a pair of air-side heat exchangers, an expansion valve, and a heat medium-side heat exchanger which are connected by piping to circulate refrigerant; piping for circulating heat medium; a flow passageway switching device for switching the circulation path of refrigerant; a temperature sensor; pressure sensors; and a control device. The control device controls the compressor on the basis of a target exit temperature that is set in advance, a heat medium temperature measured by means of the temperature sensor, and a pressure difference of the heat medium measured by means of the pressure sensors. If the load of a load-side apparatus becomes a low load less than or equal to a lowest capacity of the compressor, start-stop avoidance control is implemented in a state in which the lowest capacity operation of the compressor is maintained, and one of the pair of air-side heat exchangers and the heat medium-side heat exchanger are connected in parallel by means of the flow passageway switching device.
Inventors:
YAMANO YOSHIO (JP)
KADOWAKI KIMITAKA (JP)
AKIZUKI TAKAHIRO (JP)
ITO TAKUYA (JP)
OKOSHI YASUSHI (JP)
KADOWAKI KIMITAKA (JP)
AKIZUKI TAKAHIRO (JP)
ITO TAKUYA (JP)
OKOSHI YASUSHI (JP)
Application Number:
PCT/JP2017/018815
Publication Date:
November 22, 2018
Filing Date:
May 19, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B6/00; F25B13/00; F25B29/00
Domestic Patent References:
| WO2017068631A1 | 2017-04-27 | |||
| WO2016088262A1 | 2016-06-09 |
Foreign References:
| JPH07120089A | 1995-05-12 | |||
| JP2016053429A | 2016-04-14 | |||
| JP2014159923A | 2014-09-04 | |||
| JPS637314B2 | 1988-02-16 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
Download PDF: