JPS60228821A - Valve gear equipped with make and break detecting device of electromagnetic safety valve - Google Patents

Abstract

PURPOSE:To enable to previously detect the make and break actions of an electromagnetic safety valve by a structure wherein a permanent magnet is provided at the other end of a lever and at the same time a reed switch, which turns ON and OFF in response to the shifting of the permanent magnet, is provided outside a valve box opposite to said other end of the lever. CONSTITUTION:A spring 19, which abuts the one end of a lever 16 against an electromagnetic safety valve 12. At the same time the lever 16 is provided in a valve box 8 so as to keep in a relative position that the other end of the lever 16 draws near the inner wall surface of the valve box 8 together with the safety valve 12 when the safety valve 12 is at its open position and breaks away from the inner wall surface when the safety valve 12 is at its closed position. In addition, a permanent magnet 20 is provided at the other end of the lever 16 and a reed switch 21, which turns ON and OFF in response to the shifting of the permanent magnet 20 accompanied with the rocking motion of the lever 16, is provided onto the outer wall surface of the valve box 8 at the position opposite to the permanent magnet 20. Thus, a magnetic piece to operate the reed switch can be located near the reed switch as much as possible, resulting in enabling to surely put the reed switch into actuation even when any position of the valve box, onto which the reed switch is provided, is taken.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a valve device equipped with an opening/closing detection device for an electromagnetic safety valve.

(Prior art) A conventional valve housing is provided with an electromagnetic safety valve and a shutoff valve that is suppressed to open by a valve rod, and a lever that is pushed by the valve and swings when the shutoff valve is suppressed to open by the valve rod. A valve device is known in which the electromagnetic safety valve is pressed open against a spring.

In this type of valve device, if the electromagnetic safety valve is open when it should be closed due to a failure of the electromagnetic safety valve, or conversely, if it is closed when it should be closed, there is a law. If the igniter shifts to the above operation, an explosion or ignition may occur, or the sequence circuit may work, causing the igniter to operate unnecessarily.

(Problems to be Solved by the Invention) An object of the present invention is to provide a device for detecting the opening and closing of the electromagnetic safety valve in advance in order to solve the above-mentioned disadvantages.

(Means for Solving the Problems) The present invention provides an electromagnetic safety valve and a manual valve that is pressed open by a valve rod in a valve housing, and when the manual valve is pressed to open, the manual valve is pushed and swung. In a valve device that presses and opens the electromagnetic safety valve through a lever, the lever is provided with a spring that brings one end of the valve close to the electromagnetic safety valve side, and the other end of the lever is connected to the electromagnetic safety valve. When the valve is in the open position, the knife contacts the inner wall surface of the valve housing along with the electromagnetic safety valve, and when the valve is in the closed position, the knife is pushed away from the valve housing. , and a magnet is provided at the other end of the lever, and a reed switch is provided outside the valve housing facing the other end of the lever and is turned on and off as the magnet moves.

(Example) An example of implementing the present invention will be explained with reference to the attached drawings.

In the drawing, (1) is the water supply channel connected to the heat exchanger (2), and (3)
is the hot water outlet for drought water heated through the heat exchanger (2), (
4) is the hot water tap installed therein, (5) and (6) are the main burner and constant flame burner that heat the heat exchanger (2), and (7)
indicates a fuel supply path for supplying fuel to these burners (5) and (6), and (8) indicates a valve housing in which the fuel supply path (7) is provided, and a manual operation member (9) is installed inside the valve housing (8). ) is controlled by the electromotive force of the manual valve (IO) and the thermal lightning pair (11) facing the permanent burner (6), and is controlled by the electromotive force of the spring (12a).
), the electromagnetic safety valve (+21) is resiliently repelled to the valve closing side, and an automatic valve (I@, etc., which is opened in conjunction with the hydraulic response member (1, C) that does not intervene in the water supply channel (1)) .Furthermore, both valves (
101 (consisting of a branching path (+9) connected to the constant flame burner (6) from the middle of lΦ to the constant flame burner (6), and a lever qe between the manual valve (10 and the electromagnetic safety valve (IZ) Manual valve (
When the valve 1 (+1) is opened, the electromagnetic safety valve 0 is pressed open via the lever 111e.The manual operation member (9) has a lock that keeps the manual valve (1G open) when the manual operation member (9) is pressed. It is equipped with a push button G8 for unlocking the lock piece (+71).

The lever ae is provided with a spring a9 that brings one end into contact with the electromagnetic safety valve (121), and the other end of the lever ae is connected to the valve housing when the electromagnetic safety valve 0 is in the open position. When it is close to the inner wall surface of (8) and is in the valve closed position, it is pushed by this and maintains the relationship position where it separates from the valve housing (
8) Provided within. A permanent magnet (2) is provided at the other end of the lever (161), and is turned on as the permanent magnet (2) moves with the swinging of the lever 0e on the outer wall surface of the valve casing (8) facing the permanent magnet (2).

Install a reed switch■ to turn off.

As shown in Fig. 3, the reed switch
intervened to display the opening of the electromagnetic safety valve (+21).

In addition, the one shown in the figure is provided with a temperature detection switch (c) that detects the water temperature of around 12 degrees in the water supply channel (1) and switches the switch, and also has a temperature detection switch (c) that connects the indicator lamp to each switching contact.
The display lamp also functions as a water temperature display lamp.

The water pressure responsive member (131) is installed downstream of the water pressure responsive member (131), and the amount of water supplied to the heat exchanger (2) is adjusted to the water temperature by switching the operator (16a) of the switching valve ae according to the indicator lamp as shown in FIG. By adjusting the temperature according to the following, it was possible to optimize the outlet temperature. In Fig. 3, (g) indicates flicker.

According to the present invention, it is possible to easily detect the opening or closing of the electromagnetic safety valve using a reed switch, thereby providing a control valve device that can perform proper operation. In addition, a spring is provided to cause the lever to move, and when the other end of the lever is in the opening position of the electromagnetic safety valve, the knife approaches the inner wall surface of the valve housing with the electromagnetic safety valve, and when it is in the closing position, A permanent magnet is provided at the other end of the lever, and a permanent magnet is provided outside the valve casing facing the other end of the lever so as to maintain a position in which it is pushed away from the valve casing. Since a reed switch that turns off is provided, the magnet piece that operates the reed switch can be brought as close as possible to the reed switch, and even if the valve housing in which the reed switch is installed is placed in any position, the reed switch will not work. It is possible to obtain a device that operates reliably, increasing the degree of freedom in design, and since the switch operating member does not face the fuel supply path, there is the disadvantage that fuel may explode and burn in the fuel supply path due to sparks, etc. There are effects such as no

[Brief explanation of drawings]

FIG. 1 is a cut-away side view showing one example of implementing the present invention, FIG. 2 is an enlarged sectional view of a portion thereof, and FIG. 3 is a display circuit diagram. (8)... Valve housing 11 (11... Manual valve (+21)
...Solenoid valve (12a)...Spring 0e...Lever ■
... Permanent magnet ■ ... 2 people outside the reed switch 3 Figure 2 Figure 3

Claims (1)

[Claims] An electromagnetic safety valve and a manual valve that is pressed open by a valve rod are installed in the valve housing, and when the manual valve is pressed to open, the electromagnetic safety valve is moved against a spring through a lever that is pushed and swung. In a valve device that opens the valve by pressure, the lever is provided with a spring that brings one end into contact with the electromagnetic safety valve, and when the other end of the lever is in the open position of the electromagnetic safety valve, the spring is attached to the lever. The lever is placed in the valve housing so that it is close to the inner wall surface of the valve housing and is pushed away when the valve is in the closed position, and a magnet is installed at the other end of the lever. A valve device comprising an opening/closing detection device for an electromagnetic safety valve, which includes a reed switch disposed outside the valve valve facing the other end of the lever and turned on and off as the magnet moves.