FLOW RATE REGULATING DEVICE
Document Type and Number:
Japanese Patent JP3569400
PROBLEM TO BE SOLVED: To improve the responsiveness in controlling the flow rate by making a control so that the regulation of the passing degree of opening by a regulating means and the operation by an operating means.
SOLUTION: A control circuit is provided with a storage function part to store the relationship between the turning angle 44 of the water pressure to be detected corresponding to the reference value and the water flow rate 75. The control circuit is provided with a relationship operating function part to operate the relationship between the flow rate 75 corresponding to the arbitrary detected water pressure and the turning angle 44 based on the stored relationship. Various curves to express the relationship between the turning angle 44 corresponding to the arbitrary water pressure, for example, 0.3MP and 0.5MP and the flow rate 75 are obtained by the operation by the relationship operating function part. Based on the relationship between the turning angle 44 and the flow rate 75, the turning angle 44 corresponding to the set flow rate at the converted water pressure is operated. The turning angle 44 of a motor is regulated so as to be the operated turning angle 44. The degree of opening is regulated, and the responsiveness in regulating the water quantity in the start is improved.
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