JPS63101749U

JPS63101749U -

Info

Publication number: JPS63101749U
Application number: JP17804887U
Authority: JP
Priority date: 1987-11-21
Filing date: 1987-11-21
Publication date: 1988-07-02
Also published as: JPH0416115Y2

Description

[Brief explanation of drawings]

第１図は従来装置の概略説明図、第２図はその
電気回路図、第３図は他の従来装置の概略説明図
、第４図はその電気回路図、第５図は本考案装置
の１例を示す概略説明図、第６図はその電気回路
図である。１……熱交換器、２……バーナ、３……燃焼制
御器、４……給水量制御器、５……水温センサ、
６……可変抵抗器、７……ブリツジ回路、８……
水量センサ、９……第１演算増幅器、１０……燃
料供給路、１１……電磁式比例弁、１１ａ……励
磁コイル、１２……第１増幅器、１３……第２演
算増幅器、１４……給水路、１５……常開型電磁
弁、１５ａ……励磁コイル、１６……第２増幅器
。 Fig. 1 is a schematic explanatory diagram of the conventional device, Fig. 2 is its electric circuit diagram, Fig. 3 is a schematic explanatory diagram of another conventional device, Fig. 4 is its electric circuit diagram, and Fig. 5 is the inventive device. A schematic explanatory diagram showing one example, and FIG. 6 is an electric circuit diagram thereof. 1... Heat exchanger, 2... Burner, 3... Combustion controller, 4... Water supply amount controller, 5... Water temperature sensor,
6... Variable resistor, 7... Bridge circuit, 8...
Water amount sensor, 9...first operational amplifier, 10...fuel supply path, 11...electromagnetic proportional valve, 11a...excitation coil, 12...first amplifier, 13...second operational amplifier, 14... Water supply channel, 15... Normally open solenoid valve, 15a... Excitation coil, 16... Second amplifier.

Claims

[Scope of utility model registration request]

Combustion that proportionally controls the combustion amount of the burner that heats the heat exchanger according to the hot water supply load, which is determined by the deviation between the water supply temperature and the set temperature, and the amount of water supplied, thereby controlling the outlet temperature to a desired set temperature. A controller, a water supply amount controller that reduces the amount of water supplied to the heat exchanger according to the deviation when the hot water supply load exceeds the hot water supply capacity, the combustion controller: A bridge circuit incorporating a water temperature sensor for detecting supply water temperature and a variable resistor for setting hot water temperature, a water flow sensor,
Inputs a signal corresponding to the deviation between the water supply temperature detected by the bridge circuit and the set temperature, and a signal corresponding to the water supply amount detected by the water flow sensor, multiplies both signals, and outputs a signal corresponding to the hot water supply load. a first operational amplifier that inputs an output signal from the first operational amplifier and causes a current corresponding to the hot water supply load to flow through an excitation coil of an electromagnetic proportional control valve interposed in the fuel supply path of the burner; The water supply amount controller is configured such that the output signal from the first operational amplifier is used as an input signal, the signal corresponding to the hot water supply capacity is used as a setting input signal, and the water supply amount controller is configured to operate both when the hot water supply load exceeds the hot water supply capacity. A second operational amplifier outputs a signal according to the difference in input signals, and the output signal from the second operational amplifier is input to supply hot water to the excitation coil of a normally open solenoid valve interposed in the water supply channel of the heat exchanger. 1. A control device for a water heater, comprising: a second amplifier that flows a current according to a deviation between a load and a hot water supply capacity.