JPS6389550U

JPS6389550U -

Info

Publication number: JPS6389550U
Application number: JP18493686U
Authority: JP
Priority date: 1986-11-28
Filing date: 1986-11-28
Publication date: 1988-06-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す基本回路図、
第２図は第１図の表示手段として用いられる表示
板の作動説明図、第３図は温水器の全体を示す概
略構成図、第５図乃至第６図は本考案の他の実施
例を示す回路図である。１……貯湯タンク、２……ヒータ、５……圧力
スイツチ、７……安全弁、１１……電源、１０…
…主回路部、１２……漏電遮断器、１５……ヒー
ター回路、２０……圧力検出回路部、２５……表
示若しくは報知手段。 FIG. 1 is a basic circuit diagram showing an embodiment of the present invention.
Fig. 2 is an explanatory diagram of the operation of the display board used as the display means in Fig. 1, Fig. 3 is a schematic diagram showing the overall configuration of the water heater, and Figs. FIG. 1... Hot water storage tank, 2... Heater, 5... Pressure switch, 7... Safety valve, 11... Power supply, 10...
... Main circuit section, 12 ... Earth leakage breaker, 15 ... Heater circuit, 20 ... Pressure detection circuit section, 25 ... Display or notification means.

補正昭６２．６．１９図面の簡単な説明を次のように補正する。明細書中第１９頁第２行目乃至第６行目を次の
通り補正する。「第１図は本考案の一実施例を示す基本回路図
、第２図は第１図の表示手段として用いられる表
示板の作動説明図、第３図は温水器の全体を示す
概略構成図、第４図乃至第６図は本考案の他の実
施例を示す回路図である。」Amendment June 19, 1982 The brief description of the drawing is amended as follows. Lines 2 to 6 of page 19 of the specification are amended as follows. "Figure 1 is a basic circuit diagram showing one embodiment of the present invention, Figure 2 is an explanatory diagram of the operation of the display board used as the display means in Figure 1, and Figure 3 is a schematic configuration diagram showing the entire water heater. , FIGS. 4 to 6 are circuit diagrams showing other embodiments of the present invention.

Claims

[Scope of claim for utility model registration] (1) A hot water storage tank to which water supply and hot water supply pipes are connected;
a heater circuit that controls energization to a heater that heats hot water in the hot water storage tank; a ground leakage breaker that is interposed between the heater circuit and the power source, and that detects a leakage current when it occurs and interrupts the circuit;
A safety valve for pressure relief that is connected to the hot water storage tank or a pipe connected to this hot water storage tank and opens at a predetermined internal pressure of the hot water storage tank, and a pressure relief safety valve that is attached to a part that is activated when an internal pressure of the hot water storage tank that is slightly higher than this safety valve is detected. and a pressure switch, which acts on the earth leakage breaker as an activation signal to generate a pseudo current equivalent to that at the time of an earth leakage when the pressure detection is activated, thereby cutting off and maintaining energization to the heater circuit. Features a pressure safety device for electric water heaters. (2) A utility model characterized in that a display or notification means is provided on at least one side of the earth leakage breaker to determine whether the response action of the earth leakage breaker that interrupts the heater circuit is due to leakage detection or pressure detection. A pressure safety device for an electric water heater as claimed in claim 1.