JPH0355430A - Controller of solenoid for attraction operation of solenoid safety valve - Google Patents

Abstract

PURPOSE:To lengthen the life of a battery by providing a switch which opens by the output of a time controller which gives a time required for the attraction operation of a safety valve and is set up beforehand according to the voltage of a power supply line. CONSTITUTION:An electric current for charging a capacitor C is passed through a switch operation section 21 of a capacitor circuit, and an electric power source switch S3 and the switch S1 of a time controller A are turned ON by the switch operation section 21, and an electric current is passed through solenoid SOL for attraction operation, magnet M, ignitor 22, and time controller A from an electric power source E. Now, the time controller A starts counting time of electric current supply set beforehand according to the voltage in the supplied electric current,and the solenoid SOL for attraction starts and its plunger 9 moves downwards against a spring 3 through a shaft 10 for pushing and driving. At the same time the iron piece 6 for attraction which is incorporated in the safety valve V is pressed against the attraction face 8 of the magnet M to hold the iron piece 6 to the magnet M by the attraction to release the safety valve V of attraction and holds it.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention is applicable to gas water heaters, etc. Concerning a solenoid control device for magnetic safety valve suction operation. [Prior art] In a thermocouple-type a-magnetic safety valve that opens and holds the safety valve open using the thermoelectromotive force of a thermal lightning pair heated by a gas combustion flame, an electromagnetic solenoid automatically performs suction of f/F at the time of ignition. has been put into practical use. However, in the case of an electromagnetic solenoid that uses a dry cell battery as a power source, for example, if the voltage of the dry cell battery is 3.3V, the conventional technology takes into account the voltage drop of the dry cell battery, etc. Since the time is about 0.5 seconds, the consumption of the dry cell battery is significant, and there is a strong demand for a countermeasure, but no countermeasures (power saving measures) have been taken yet.

[Problem to be solved by the invention]

In the conventional technology described above, the power supply time required for suction is about 0.5 seconds, but according to an experimental example, when the power supply voltage of the dry battery was 3.3V, the power supply time required for suction was 0.06 seconds. Ta. Therefore, 0.5 seconds - 0.06 seconds - 0.44
Seconds (approximately 88%) were wasted. This invention is
In view of this problem with the conventional technology, the present invention aims to eliminate unnecessary power consumption by cutting off the power supply after the necessary and sufficient power supply time required to keep the safety valve adsorbed and open, which is set in advance according to the power supply voltage, has elapsed. The object of the present invention is to provide a solenoid control device for adsorption operation of an electromagnetic safety valve that can significantly extend battery life.

[Means to solve the problem]

In order to achieve the above object, the solenoid control device for suction operation of an electromagnetic safety valve of the present invention has a power supply circuit for a solenoid for suction operation of a thermocouple type TM safety valve. It is characterized by the provision of a switch that is opened by the output of a time controller that provides the time required for operation. [1 乍用] Based on this invention that was constructed as described above? Solenoid system for adsorption operation of tt magnetic safety valve! ! ! In the device, when the 'a@fi action solenoid is supplied with power at the time of ignition, the suction operation solenoid presses and opens the safety valve, and after a necessary and sufficient power supply time has elapsed until the safety valve is held in W& position, the suction operation starts. T? The switch installed in the power supply circuit to the operation solenoid is opened by a command from the time controller, cutting off the power supply to the suction operation solenoid, so the pressing operation by the suction operation solenoid is immediately released, reducing unnecessary power consumption. This is to save electricity.

〔Example〕

The following is based on this invention! An example of a solenoid control device for @-operating a magnetic safety valve will be explained with reference to the drawings. Figures 1 and 2 show an example in which the present invention is applied to a first type gas water heater. The valve seat 4 is biased in the closing direction by a spring 3 so as to be able to come into contact with and separate from the valve seat 4, and an adsorption iron piece 6, which is integrally provided with the cough safety valve V via the valve shaft 5, is adjacent to the valve chamber 2. An electromagnetic solenoid SQL for suction operation is provided in contact with the suction IF [8] of the electromagnet M provided in the cylindrical portion 7 to be installed, and is provided so as to maintain the same axis as the safety valve (■) and the electromagnet M. 9 in the flange with safety valve V and push shaft lO
The flange 9 is urged in the return direction (upward in the figure) by the spring 11, and the electromagnetic coil of the electromagnet M is connected to the thermocouple heating pilot!・Thermocouple T heated by combustion flame a of burner P,
C, and the diaphragm 12 of the hydraulic response system B, which will be described later, responds to the water supply pressure during ignition and release operations, thereby creating an automatic gas valve ■. The operation switch S operates in conjunction with the opening and closing of the magnetic solenoid SQL.
is started, the safety valve V is pressed open, and the electromagnet M attracts and holds the safety valve open. Further, A is a time system ma for controlling the power supply time from when the safety valve V is pressed open by the electromagnetic solenoid SQL for suction operation to when it is held open by suction by the t magnet M, for example, 3. OV,
A memory is provided that reads the power supply voltage (t6 voltage) that changes analogically such as 2.6V, 2.0V, etc., and stores the necessary and sufficient power supply time before adsorption, which is set in advance according to the power supply voltage. and when the power supply time has elapsed,
An electronic controller or the like is used to issue an open command to a stop switch S, which will be described later, and is incorporated into the t-source circuit via the switch S. Furthermore, S is the electromagnetic solenoid for suction operation. S
This is a stop switch installed in the power supply circuit to QL, which is a normally closed switch and is opened in response to a command from the time controller A. For example, as illustrated in Fig. 2, when the power supply voltage is When the power supply time set in advance has elapsed, the switch drive section 13 is actuated by a command from the time controller A to open the stop switch S. In addition, in FIG. 1, B is a hydraulic response device provided in the water supply channel 14, and its diaphragm l2 is equipped with an automatic gas valve v1 and a water governor valve V. are connected via valve shafts 15 and 16. 17 is the operation switch S! by the movement of the valve shaft 15! 1 Switch operating lever, 18 heat exchanger, 19 main gas burner, P! is the ignition pilot harness, 20 is the hot water tap, and ■ is the gas governor valve. In FIG. 2, E is a power source such as a dry battery, C is a capacitor, and S is a power switch, which is operated together with the switch s1 of the timer A by a switch actuator 21 such as a tm solenoid provided in the capacitor circuit. It has become so. 22
is the igniter, and 23 is the spark plug. The operation of the above structure will be explained next. When the tap 20 is opened to ignite and tap hot water, the pressure of the water flowing through the water supply channel 14 causes the diaphragm l2 of the hydraulic response device IB to
is pushed to the left in the figure to open the automatic gas valve v1, and at the same time, the operation switch S2 is operated via the switch operation lever 17 and switched to the discharge circuit side of the capacitor C, so that the switch actuator 21 of the capacitor circuit A charging current is applied to the capacitor C, and the switch operating section 21 turns on the power switch S and the switch S1 of the time controller A, and l! ! 24 operation electromagnetic solenoid SQL, electromagnet M, igniter 22 and time control HA 11'lXE
energize the current from. Then, the time controller A starts counting the preset power supply time according to the power supply voltage,
At the same time, the electromagnetic solenoid SOL for suction operation is activated, and its plunger 9 moves downward in the figure against the recuperation spring 1l, and pushes open the safety valve V downward in the figure against the spring 3 via the push shaft IO. At the same time, the WI&S iron piece 6, which is integrated with the safety valve V, is pressed against the attraction surface 8 of the 11 magnet M, and the attraction iron piece 6 is held by the energized electromagnet M, thereby holding the safety valve ■ open by attraction. ! , thermocouple heating pipe burner P. Gas is supplied to the main gas burner 19, and the spark plug 2 is activated by starting the igniter 22.
Pyro/Tovarna P8 for ignition with continuous spark from 3
is ignited, and the pilot flame B heats the thermocouple.
The second burner P and the main gas burner 19 are ignited.

When the necessary and sufficient power supply time to perform the series of ignition operations has elapsed, the switch drive section 13 is actuated in response to a command from the time controller A to open the stop switch S and then to the electromagnetic solenoid for suction operation SQL. Since the power supply is exhausted, the plunging portion 9 of the electromagnetic solenoid SQL for suction operation moves upward in the drawing by the return spring 11 and returns to its original position, but the safety valve V continues to be held open and suctioned by the electromagnet M. Therefore, when the predetermined discharge time of the capacitor C has elapsed, the current from the capacitor C is cut off, so the switch actuator 21 turns off the t-source switch S and the switch S of the time controller A, and the t-source switch S is turned off. At the same time as the circuit is cut off, the power supply to the time IIlIl device A is also cut off, but the electromagnet M is switched to the thermoelectromotive force generated by the heating of the thermocouple TC and continues to be excited, so the safety valve V remains open and held open. The combustion of the main gas burner 19 is maintained, and the combustion flame C heats the heat exchanger 18 and taps the hot water.

Next, when extinguishing the fire and stopping the hot water supply, when the hot water tap 20 is closed, the Guyafram 12 of the hydraulic response device B is released from being pushed to the left in the figure by the water supply pressure, so the automatic gas valve V is closed and each gas valve V is closed. Burners Pi and Pg19 are extinguished. Therefore, the heat exchanger 18 is heated by the main gas burner 19, and the thermocouple TC is heated by the pilot burner P for heating the thermocouple.
The heating of the safety valve V is stopped, and the electromagnet M releases the suction open holding of the safety valve V, so the safety valve V also closes. The operation switch S3 is then switched to the charging circuit for the capacitor C by the switch operation lever l7. The series of operations from holding the safety valve V suction open in the ignition and hot water tapping operations to igniting the burner is performed within the power supply time set in advance according to the power supply voltage, thereby eliminating unnecessary power consumption. For example, when the power supply voltage is 3.0■ as shown in the graph of Fig. 3, the sufficient power supply time necessary for this suction operation is required to ensure that the safety valve V is completely held open by suction. In this case, the suction opening of the safety valve V is completed at point e, but it is preferable to add a margin time to this, about 0.15 seconds. Therefore, compared to the conventional technology which set the power supply time to about 0.5 seconds - 0.15 seconds -
It is possible to save power by 0.35 seconds, and the power supply voltage is 2.5 seconds.
In the case of 6■, the safety valve V! It is preferable that the power supply time, which is the time required to complete the connection and release (point e) plus a margin time, be about 0.25 seconds. Therefore, compared to the conventional technology where the power supply time was about 0.5 seconds, the power supply time was 0.5 seconds - 0.
．． It is possible to save power by 0.25 seconds to 0.25 seconds (see the graph in Figure 4).Furthermore, when the power supply voltage is 2.0V, the time it takes to complete the adsorption opening of the safety valve V (point e) The power supply time including the margin time is preferably about 0.45 seconds. Therefore, compared to the conventional technology which set the power supply time to about 0.5 seconds, the power supply time is 0.5 seconds - 0.45 seconds - 0.05 seconds.
It is possible to receive Wi-Fi in seconds (see the graph in Figure 5). In the above embodiment, in order to ensure that the safety valve (■) is completely kept open by suction, the margin time is set to be approximately the same as the suction completion time, but this margin time may of course be made shorter than in the embodiment. be. [Effects of the Invention] As explained above, this invention has a structure in which the switch provided in the power supply circuit to the suction operation solenoid is opened at a power supply time preset according to the power supply voltage by a time controller. This device uses a dry cell battery as a power source in order to avoid wasting power more than necessary for the suction opening operation of the safety valve by the suction operation solenoid, and has the effect of significantly extending the life of the dry cell battery.

[Brief explanation of drawings]

Fig. 1 is an overall schematic diagram showing an embodiment of the solenoid control device for adsorption operation of an electromagnetic safety valve according to the present invention, Fig. 2 is a circuit diagram of the main parts, and Figs. 3 to 5 are power supply voltages. This is a graph showing an example of the power supply time according to. MV...Solenoid safety valve, SQL...Solenoid for adsorption operation, A...Time controller, ■...Safety valve, S...
switch.

Claims (1)

[Claims] Solenoid for suction operation of thermocouple type electromagnetic safety valve (MV) (
The power supply circuit to the SOL is equipped with a switch (S) that is opened by the output of a time controller (A) that provides the time necessary for the suction operation of the safety valve (V), which is set in advance according to the power supply voltage. Solenoid control device for adsorption operation of electromagnetic safety valves.