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Patent Searching and Data


Title:
HOT WATER HEATING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/082735
Kind Code:
A1
Abstract:
[Problem] To provide a hot water heating system capable of determining that the positional relationship between a circulation means and an expansion-absorbing means is inappropriate. [Solution] This hot water heating system (1) is provided with: a hot water heating device (2); a heating terminal (3); a heat circulation circuit (4) for connecting the hot water heating device and the heating terminal; a circulation means (5) provided in the heat circulation circuit (4); and an expansion-absorbing means (6) provided in the heat circulation circuit (4) to absorb the volumetric expansion of a heat medium due to an increase in temperature, wherein the hot water heating device (2) is provided with: a heating passage (10) connected to the heat circulation circuit (4); a heating means (11) for heating a heat medium inside the heating passage (10); a pressure detection means (14) for detecting the internal pressure of the heating passage (10); a supply passage (15) connected to the heating passage (10); an opening/closing means (16) for the supply passage (15); and a control means (17) which opens the opening/closing means (16) to supply the heat medium when the pressure detection means (14) detects that the internal pressure of the heating passage (10) is less than a reference value, wherein the control means (17) determines that the positional relationship between the circulation means (5) and the expansion-absorbing means (6) is inappropriate when the pressure detected by the pressure detection means (14) at the moment the circulation means (5) starts to be driven is lower than the pressure detected prior to driving the circulation means (5).

Inventors:
MORITA YASUSHI (JP)
YOKOYAMA TAKEHITO (JP)
Application Number:
PCT/JP2018/038456
Publication Date:
May 02, 2019
Filing Date:
October 16, 2018
Export Citation:
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Assignee:
NORITZ CORP (JP)
International Classes:
F24D3/00; F24D3/08; F24D3/10
Foreign References:
JP2005337632A2005-12-08
JP2003130448A2003-05-08
JPS63197823A1988-08-16
JP2002286580A2002-10-03
Attorney, Agent or Firm:
OKAMURA, Toshio (JP)
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