Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HOT WATER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2014005966
Kind Code:
A
Abstract:

To provide a hot water supply device capable of stably controlling a circulation flow rate of a bath circulation circuit.

The hot water supply device (storage-type water heater 40) includes a first pump (first bath circulation pump 12) and a second pump (second bath circulation pump 38) which are disposed in the bath circulation circuit 4 for taking out hot water/water in a bathtub 2 and returning the same to the bathtub 2, and of which rotational frequencies are controlled by a speed command signal, and pump control means (control portion 35) detecting the rotational frequency of one of the pumps with respect to one of the first pump and the second pump, performing feedback control of the rotational frequency to calculate the speed command signal to the one of the pumps so that the detected rotational frequency reaches a prescribed target rotational frequency, and controlling the speed command signal to be fixed to a specific value with respect to the other pump of the first pump and the second pump, in driving the first pump and the second pump.


Inventors:
IKEDA KAZUKI
TODA AKIHIRO
SUDO MASAYUKI
SAKANOUE TOMOKI
Application Number:
JP2012000140670
Publication Date:
January 16, 2014
Filing Date:
June 22, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F24H1/00
Attorney, Agent or Firm:
高田 守
高橋 英樹
小泉 康男