Title:
HEATING HEAT SOURCE MACHINE
Document Type and Number:
Japanese Patent JP2017133723
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a heating heat source machine which acquires a circulation flow rate without newly providing a flow sensor and the like, which grasps output heat quantity by heat exchange heating by using this, and which can perform detection of abnormal condition occurrence and the like based on comparison with input heat quantity.SOLUTION: Data for calculation for input heat quantity and output heat quantity is accumulated until hot water becomes a predetermined temperature (YES in S1, S2, S3). Combustion is stopped while circulation pump ON is maintained, a timer is turned on and an outgoing temperature is monitored (S4). A timer value (descent time value) required for the outgoing temperature to descend by a set temperature difference ΔT is acquired (YES in S5, and then S6), and a value of the circulation flow rate corresponding to the descent time value is calculated from a relation table (S7). The output heat quantity is calculated by an integrated value of a hot water temperature difference before and after passing a heat exchanger being multiplied by the circulation flow rate, it is compared with the input heat quantity on control, and presence/absence of abnormal output is determined and a gas type is specified (S8).SELECTED DRAWING: Figure 4
Inventors:
ASANO MASAAKI
KATAOKA HISATO
KATAOKA HISATO
Application Number:
JP2016012321A
Publication Date:
August 03, 2017
Filing Date:
January 26, 2016
Export Citation:
Assignee:
NORITZ CORP
International Classes:
F24D3/00; F24D19/10
Attorney, Agent or Firm:
Patent business corporation Prois ip partners
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