Title:
WATER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2023072980
Kind Code:
A
Abstract:
To disclose one example of a water supply device which can control execution of a freezing prevention function without using an outside air temperature sensor.SOLUTION: A water supply device 1 determines whether a freezing prevention function is executed by using pressure rise caused by freezing. In summer, a pressure in a pressure accumulator 7 increases to make a detection pressure P higher than a non-freezing time pressure Ps and the freezing prevention function may be operated improperly. For preventing the situation, the water supply device 1 executes the freezing prevention function when the detection pressure P is higher than the non-freezing time pressure Ps if a detection temperature T is lower than or equal to a non-winter temperature Tw. Thus, when the pressure in the pressure accumulator 7 increases, the freezing prevention function is not operated improperly.SELECTED DRAWING: Figure 1
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Inventors:
SAKATANI TETSUNORI
WATANABE SHOTA
WATANABE SHOTA
Application Number:
JP2021185750A
Publication Date:
May 25, 2023
Filing Date:
November 15, 2021
Export Citation:
Assignee:
KAWAMOTO PUMP MFG
International Classes:
F04B49/06; F04D15/00
Attorney, Agent or Firm:
Nagoya International Patent Attorney Corporation