Title:
VALVE CONTROLLER FOR TEMPERATURE CONTROL VALVE
Document Type and Number:
Japanese Patent JP3189544
Kind Code:
B2
Abstract:
PURPOSE: To effectively and rapidly decide presence or absence of a malfunction of a temperature control valve without increase in cost.
CONSTITUTION: The valve controller for a temperature control valve comprises feedback control means 46 for feedback controlling an opening of a temperature control valve 28 based on a deviation Δρ between a target value ρ of a supply hot water temperature Tc and an actual value ρ decided based on detection of an actual supply hot water temperature Tm to compare an integrated value EA; obtained by integrating the deviation Δρ calculated at each predetermined sampling period wt with a preset reference value Lsh, thereby deciding a malfunction of the valve 28 if the integrated value ΣΔρ exceeds the value Lsh.
More Like This:
Inventors:
Tomio Miyake
Hidehito Ichimaru
Hidehito Ichimaru
Application Number:
JP32781693A
Publication Date:
July 16, 2001
Filing Date:
December 24, 1993
Export Citation:
Assignee:
Noritsu Co., Ltd.
International Classes:
G05B11/36; F24H1/10; G05B23/02; G05D23/19; (IPC1-7): F24H1/10
Domestic Patent References:
| JP791741A |
Attorney, Agent or Firm:
Kazuhide Okada
Previous Patent: 口金アダプターおよびこれを使用した照明器具
Next Patent: BIDIRECTIONAL TRANSFER EQUIPMENT IN AUTOMATIC WAREHOUSE
Next Patent: BIDIRECTIONAL TRANSFER EQUIPMENT IN AUTOMATIC WAREHOUSE