Title:
WATER LEVEL DETECTION DEVICE
Document Type and Number:
Japanese Patent JPH01312612
Kind Code:
A
Abstract:
PURPOSE:To eliminate an inconvenience that water is supplied endlessly even if the drainage plug of a water storage part is forgotten to close by stopping an operation when the number of the deciding times of inflection point-detection reaches a prescribed number of times as a control sequence. CONSTITUTION:The number of deciding times (n) is calculated whenever an inflection point is detected and the supervisory of the inflection point is continued until it reaches the previously decided number of times n max. The sequence is set in such a way that operation is stopped when the number reaches said number of times. Thus, endless water supply due to the forgetfulness of closing the drainage plug 51 can be prevented. The reference value of a water level can be set not after the inflection point is measured but after a prescribed time passes. However, the water level is set while said amount is increased.
Inventors:
YOKOAJIRO YOSHIYUKI
HAMANO NOBUO
KONISHI MITSUNARI
HAMANO NOBUO
KONISHI MITSUNARI
Application Number:
JP14420688A
Publication Date:
December 18, 1989
Filing Date:
June 10, 1988
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F24H1/00; G05D9/00; (IPC1-7): F24H1/00; G05D9/00
Domestic Patent References:
| JPS62262110A | 1987-11-14 | |||
| JPS632035B2 | 1988-01-16 |
Attorney, Agent or Firm:
Tomoyuki Takimoto (1 person outside)