Title:
Bath hot-water supply device
Document Type and Number:
Japanese Patent JP6170841
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a bath hot water supply device capable of quickly starting reheating following hot water feeding when filling hot water in a bathtub.SOLUTION: A bath hot water supply device includes two heat exchangers disposed vertically as heating parts for heating hot water in a bathtub, and hot water is guided to the lower side heat exchanger from the upper side heat exchanger by a communication passage. Also, a return passage is provided to which a hot water feeding passage is connected, the return passage guiding the hot water sucked by a circulation pump from the bathtub to the upper side heat exchanger. Then, the return passage and the communication passage are connected by a bypass passage for bypassing the upper side heat exchanger. Thus, compared to the case in which the bypass passage is not provided, a flow rate of hot water flowing toward the heating part in the return passage during hot water feeding into the bathtub increases, so that it becomes possible to store hot water in the lower side heat exchanger. As a result, even when the hot water feeding is stopped, the hot water is likely to remain in the return passage, so that reheating can be started quickly by drive of the circulation pump following the hot water feeding.
Inventors:
Yoshitaka Ueda
Tomohiro Uchida
Tomohiro Uchida
Application Number:
JP2014002690A
Publication Date:
July 26, 2017
Filing Date:
January 09, 2014
Export Citation:
Assignee:
Rinnai Corporation
International Classes:
F24H1/00; F24H1/14; F24H9/00
Domestic Patent References:
| JP201252705A | ||||
| JP2010196990A | ||||
| JP2008298376A | ||||
| JP201147566A | ||||
| JP200857845A | ||||
| JP2007120865A | ||||
| JP200732935A |
Attorney, Agent or Firm:
Daisuke Mibayashi