JPS6357692B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a timer device that uses a timer to conduct automatic combustion by energizing a combustion continuation member such as an ignition heater after a certain period of time has elapsed.

[Conventional technology]

Conventionally, devices that automatically start combustion using a timer are equipped with a timer switch, and when the timer switch is closed, electricity is supplied to a solenoid valve to supply fuel.A timer lamp is also attached to the timer switch, and the timer switch is connected to the timer lamp. The valve was switched to the solenoid valve to energize it.

On the other hand, in those that combine a solenoid and an on-off valve without using a solenoid valve, the on-off valve can be opened and closed by a manual operation part in addition to the solenoid. It was possible to carry out combustion regardless of the situation, and to enable combustion during a power outage.

[Problems that the idea should solve]

By the way, when a timer switch and a solenoid valve are combined, the timer lamp can be turned on during setting, and the lamp display and the opening/closing of the solenoid valve are completely linked, so accurate display is possible. However, if the timer is set while the combustor is still burning, the timer switch switches the energization from the solenoid valve to the timer lamp, which means that the combustor is extinguished, and the timer must be set while the combustor is extinguished. Also, since a solenoid valve was used, the circuit would be closed during a power outage and combustion could not continue, making it very inconvenient to use.

On the other hand, for those that combine a solenoid and an on-off valve, and the on-off valve is operated in conjunction with a manual operation part, depending on the interlocking structure, the timer can be set even during combustion, allowing combustion to continue in the event of a power outage. However, poor precision in each part can cause serious trouble. In other words, there are cases in which the setting operation of the timer knob and the ignition/extinguishing operation of the operating member are performed individually, or in which the timer knob and the operating member are linked and carried out at the same time, but there is a delay in the linked operation. In this case, even if the timer switch is switched and the energization to the combustion continuation member is stopped, an abnormal state may occur in which the on-off valve is still open and fuel continues to be supplied to the combustor. At this time as well, the timer lamp lights up to indicate that the on-off valve is closed, so the operator is slow to notice the abnormal condition, which is very dangerous.

[Means for solving problems]

This invention is to accurately display the timer setting even if there is a delay in the interlocking operation of each member in a timer device that does not use a solenoid valve. fuel on/off valve, 2
3 is a movable tool that operates the fuel on-off valve 1, and 3 is a movable tool 2.
The operating member 4 is a solenoid that operates in conjunction with the movable tool 2 to change the fuel flow rate when the fuel on-off valve 1 is open. 1 is kept closed, and when the solenoid 4 is energized, it moves to open the fuel on-off valve 1.

6 is a timer switch that energizes fuel continuation members such as the ignition heater 5; 7 is a detection switch that detects the open/closed state of the fuel on-off valve 1; 8 is a timer lamp that lights up when the timer is set; The detection switch 7 and the timer lamp 8 are connected in parallel. Also, fuel on-off valve 1
The contact point of the open/close state detection switch 7 that conducts when the fuel on-off valve 1 is closed is connected to the solenoid 4, and when the non-timer side contact of the timer switch 6 becomes conductive, it energizes combustion continuation members such as the ignition heater 5. At the same time, when the fuel on-off valve 1 is in the closed state, the solenoid 4 is energized via the detection switch 7. For this reason, the movable tool 2 that kept the fuel on-off valve 1 closed
moves to open the fuel on-off valve 1. The timer lamp 8 is turned off when the non-timer side contact of the timer switch 6 is conducting, and when the detection switch 7 is conducting the open side contact of the fuel on-off valve 1, both ends are short-circuited and the light is turned off. There is.

Additionally, Fig. 2 shows a fuel switching valve 9 in addition to the fuel on-off valve 1.
10 is a notch provided in the movable tool 2 that engages with the electromagnetic drive body 11 of the solenoid 4. When the operating member 3 is pushed, the fuel on-off valve 1 is pushed by the movable tool 2. Since the notch 10 of the movable tool 2 engages with the electromagnetic driving body 11 of the solenoid 4, the fuel on-off valve 1 is kept closed. When the solenoid 4 is energized, the electromagnetic drive body 11 moves upward and disengages from the notch 10 of the movable tool 2, so the movable tool 2 returns to its original position and the fuel on-off valve 1 is opened.

In the embodiment shown in FIG. 4, the flow of fuel and the flow rate are switched depending on how one fuel on-off valve 1 is pressed, and when the operating member 3 is pulled, the movable tool 2 responds to the return force of the solenoid 4 linked thereto. Therefore, the fuel on-off valve 1 is completely pushed to close the circuit. When the solenoid 4 is energized, the electromagnetic drive body 11 is attracted and disengaged from the movable tool 2, so that the fuel on-off valve 1 is opened, the movable tool 2 is lifted, and the operating member 3 is returned. Therefore, even if the fuel on-off valve 1 is pushed again by the return force of the solenoid 4,
Since the operating member 3 is in the open position of the fuel on-off valve 1, the fuel only switches to a small flow rate and does not close.
If the force to lift the movable tool 2 is insufficient when the fuel on-off valve 1 is opened, the electromagnetic drive body 11 that attracts the movable member 2
may directly drive the movable tool 2.

12 is a timer knob, and 16 is a timer. When the timer knob 12 is turned to set the timer 16, the timer side contact of the timer switch 6 is closed. When a predetermined time has elapsed, the timer switch 6 is switched to the non-timer side contact. In addition, as shown in Fig. 2, the timer knob 12 and the operating member 3
If these are linked, the movable tool 2 can be operated by setting the timer.

13 is a driving switch linked with the fuel knob; 1
4 is a combustion blower motor, and an operation switch 13
is connected in series with the timer switch 6, and when the operation switch 13 is closed, the blower motor 14
is rotated via the non-timer side contact of the timer switch 6, and continues to rotate even after the operation switch 13 is opened until the combustor is cooled. Further, the ignition heater 5 is turned on when the operation switch 13 is closed, and is shut off when the temperature of the combustor becomes high due to the action of the thermostat 15, and the solenoid 4 is energized instead to increase the fuel flow rate.

[Explanation of action]

In the present invention configured as described above, when fuel is supplied to the combustor using the fuel knob, the combustor automatically starts combustion. When the timer 16 is set with the timer knob 12 in a state where combustion can be started, the timer switch 6 is switched to the timer side contact, and the operating member 3 is driven, the movable member 2 is turned off since the solenoid 4 is cut off.
can keep the fuel on-off valve 1 closed, and no fuel is sent to the combustor. Also, at this time, the timer switch 6 and the open/close state detection switch 7 connected in parallel with the timer lamp 8 are open, so voltage is applied to both ends of the timer lamp 8 via the solenoid 4 and the ignition heater 5, The lamp 8 lights up to indicate that the timer 16 is being set.

When the predetermined time set by the timer 16 has elapsed, the timer switch 6 switches to the non-timer side contact and energizes the ignition heater 5. At this time, the solenoid 4 is energized via the open/close state detection switch 7, so the electromagnetic driver 11 of the solenoid 4 is attracted, and the linkage with the movable tool 2 is released, so the fuel on-off valve 1 becomes open, supplying fuel to the combustor. The combustion can start automatically. When the fuel on-off valve 1 is opened, the on-off state detection switch 7 is switched, the energization to the solenoid 4 is stopped, and the fuel flow rate becomes low. At this time, both ends of the timer lamp 8 are short-circuited when the timer switch 6 connected in parallel is closed.
Timer lamp 8 goes out.

In this invention, the timer 16 can be set even when the combustor is in use, and in a configuration where the timer knob 12 and the operating member 3 are not directly linked, when the timer 16 is set with the timer knob 12, the timer 16 is set. Although the switch 6 switches to the timer side contact, the detection switch 7 connected in parallel with the timer switch 6 maintains a closed circuit, and continues to supply electricity to combustion continuation members such as the combustion blower motor 14, so that combustion continues as it is. Thereafter, when the operating member 3 is driven, the movable tool 2 closes the fuel on-off valve 1, the open/close state detection switch 7 of the fuel on-off valve 1 is switched, and the energization to the combustion continuation member is stopped. Therefore, the solenoid 4 is shut off, and at this point the combustor is automatically extinguished and enters the timer set state.

[Description of effects] In this invention, the open/close state detection switch 7 of the fuel on-off valve 1, the timer switch 6, and the timer lamp 8
Because they are connected in parallel, when the timer switch 6 is switched, the combustor is energized via the open/close state detection switch 7 and combustion can continue, and the fire is extinguished only when the fuel on-off valve 1 is closed by the operating member 3. do. Therefore, when the timer switch 6 is switched, the timer lamp 8 is short-circuited by the open/close state detection switch 7 and does not light up, making it possible to immediately notify the operator of an abnormal condition in which the timer set is not completed.

On the other hand, when the timer knob 12 and the operating member 3 are linked, even if the rotation angle of the timer knob 12 is turned to a large degree to complete the operation of the operating member 3, the timer lamp 8 indicates that the operation of the operating member 3 is completed. Since the light is turned on for the first time, the operation member 3 can be operated reliably using the timer knob 12, and abnormal conditions no longer occur.

Further, even after setting the timer, the combustor is energized and continues combustion until the operation of the operating member 3 is completed.When the timer knob 12 and the operating member 3 are not linked, the combustor is stopped (operating member 3 is operated). The good morning timer can be set while the combustor is in use prior to the combustor operation, and the timer to start combustion after a certain period of time can be set at well-defined intervals, making it extremely easy to operate.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram of this invention, FIGS. 2 and 3 are sectional views of essential parts of an embodiment, and FIGS. 4 and 5 are sectional views of essential parts of other embodiments. 1...Fuel opening/closing valve, 2...Movable tool, 3...Operation member,
4... Solenoid, 5... Ignition heater, 6... Timer switch, 7... Open/close state detection switch of on-off valve,
8...Timer lamp.

Claims (1)

[Claims] 1 A movable tool 2 that operates the fuel on-off valve 1, an operating member 3 that drives the movable tool 2, and a solenoid 4 that operates in conjunction with the movable tool 2 and switches the fuel flow rate when the fuel on-off valve 1 is open. The movable tool 2 is provided with an operation member 3 to close the fuel on-off valve 1 and a solenoid 4 to open the fuel on-off valve 1, and a timer switch 6 for energizing combustion continuation members such as an ignition heater 5. The timer switch 6, the open/close state detection switch 7 of the fuel on/off valve 1, and the timer lamp 8 are connected in parallel, and the contact of the on/off state detection switch 7, which conducts when the fuel on/off valve 1 is closed, is connected to the solenoid 4. A timer device for a combustor, characterized in that the timer switch 6 energizes a combustion continuation member such as an ignition heater 5 through a non-timer side contact, and energizes a solenoid 4 through a detection switch 7.