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Title:
HOT WATER SUPPLYING APPARATUS
Document Type and Number:
Japanese Patent JPH07280255
Kind Code:
A
Abstract:

PURPOSE: To obtain excellent hot water supply characteristics and fuel characteristics by using a DC brushless motor having variable number of revolutions as a motor for driving a combustion fan of a hot water supplying apparatus.

CONSTITUTION: A combustion fan 1 is driven by a DC brushless motor 2 having a large starting torque. Thus, the fan 1 itself has high response to start and stop. A supplying time of the air to be supplied by the fan 1 to a burner 5 is shortened to follow up a responding time of a fuel supply side. Accordingly, a time of outputting hot water from a shower can be, for example, shortened, and excellent hot water supplying characteristics can be obtained for a change for switching a hot water cock on the way or an abrupt flow rate change, etc. Since it has speed control characteristics which can variably control number of revolutions in a wide range, optimum air ratio can be set to a burning range when a high load is applied to the burner 5. Accordingly, excellent combustion characteristics are obtained for a wide range.


Inventors:
SUGIYAMA AKIRA
Application Number:
JP402195A
Publication Date:
October 27, 1995
Filing Date:
January 13, 1995
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F23N3/08; F23L5/00; (IPC1-7): F23N3/08; F23L5/00
Domestic Patent References:
JPS5846944U1983-03-30
Attorney, Agent or Firm:
Akira Kobiji (2 outside)