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Title:
HEAT PUMP TYPE CHILLER
Document Type and Number:
WIPO Patent Application WO/2015/198750
Kind Code:
A1
Abstract:
A heat pump type chiller (100) equipped with a compressor (10), a refrigerant-air heat exchanger (20), an expansion valve (40), and a refrigerant-circulating-liquid heat exchanger (50), wherein a circulating liquid is cooled by means of a heat exchange between a refrigerant and the circulating liquid. A circulating liquid inlet part, a circulating liquid outlet part, and a surface part of the refrigerant-circulating-liquid heat exchanger (50) are provided respectively with temperature sensors (TWR, TWL, TWS), and a refrigerant suction passage of the compressor (10) is provided with a pressure sensor (PL). When it is detected that the temperature detected by the three temperature sensors (TWR, TWL, TWS) or a refrigerant evaporation temperature calculated by converting from the pressure detected by the pressure sensor (PL) is equal to or less than a prescribed temperature, the compressor (10) is stopped and a circulation pump (300) for circulating the circulating liquid is operated.

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Inventors:
HORIBE Masaya (1-9, Tsurunocho, Kita-ku, Osaka-sh, Osaka 14, 〒5300014, JP)
MINAMIMOTO Kotaro (1-9, Tsurunocho, Kita-ku, Osaka-sh, Osaka 14, 〒5300014, JP)
NAKAMURA Hirotaka (1-9, Tsurunocho, Kita-ku, Osaka-sh, Osaka 14, 〒5300014, JP)
Application Number:
JP2015/064166
Publication Date:
December 30, 2015
Filing Date:
May 18, 2015
Export Citation:
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Assignee:
YANMAR CO., LTD. (1-32, Chayamachi Kita-ku, Osaka-sh, Osaka 11, 〒5308311, JP)
International Classes:
F25B1/00
Domestic Patent References:
WO2011092802A12011-08-04
Foreign References:
JP2014052122A2014-03-20
JP2007127307A2007-05-24
JPH07151429A1995-06-16
JPS6213962A1987-01-22
JP2014088965A2014-05-15
JPH02503465A1990-10-18
JPH1131086A1999-02-02
JPH1078266A1998-03-24
JP2009014298A2009-01-22
Other References:
See also references of EP 3163218A4
Attorney, Agent or Firm:
ARC PATENT ATTORNEYS' OFFICE (1-2 Sonezaki 1-chome, Kita-ku Osaka-sh, Osaka 57, 〒5300057, JP)
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