JPH0419328Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a boiler remote control operating device for displaying normality or abnormality during remote control operation of a small boiler used in homes or the like.

[Conventional technology] Boilers are usually installed outdoors to ensure their safety, so it is difficult to turn on the operation switch.
To turn the power on and off, it was necessary for people to move to the location where the boiler was installed. To eliminate this inconvenience, a remote control device is usually used that allows the boiler to be turned on and off from indoors.
Figure 3 is an example of an electric circuit that conventionally operates a boiler with a remote control. When the main switch of the boiler is ON, the boiler operation relay is turned ON and OFF by turning the remote control operation switch ON and OFF, and the boiler operation is controlled remotely. It is possible. Note that is the power supply for the relay. However, with such a remote control circuit, if the main switch is off, the boiler will not start operating even if the remote control operation switch is turned on. A circuit like the one shown in the figure can be considered.

With this circuit, you can check the operating status of the boiler using the operating lights, making it safe.

[Problem that the invention aims to solve] However, if an abnormal situation occurs such as welding of the contacts of the boiler operation relay, one or both of the boiler main switch and remote control operation switch are OFF, and the operation light is turned off. A dangerous situation occurs in which the boiler continues to operate even though the

The present invention provides a boiler remote control operating device configured to warn of such dangerous conditions.

[Means for Solving the Problems] The boiler remote control operation device of the present invention connects a boiler main switch, a remote control operation switch, and a boiler operation relay in series, and also connects a boiler operation relay circuit in parallel with the operation relay circuit. In a boiler remote control operating device equipped with a running light that displays the operating status of the boiler, a warning buzzer and a warning light circuit are provided in parallel with the operating light that displays the boiler's operating status and the power supply, respectively, and the main switch of the boiler is When the remote control operation switch is ON, electricity is passed through the ON side contact of the remote control operation switch, the boiler operation relay is turned on, the operating light is turned on, the warning light and warning buzzer are left OFF, and the remote control operation switch is turned on. If the boiler operating relay is ON even though the boiler operation relay is OFF, electricity will flow through the OFF side contact of the remote control operation switch, the warning light will turn on, the warning buzzer will sound, and the operating light will remain off. It is.

[Operation] The operation of the present invention will be explained below with reference to FIGS. 1 and 2.

Figure 1 is an electrical circuit diagram showing the boiler in normal operation with both the boiler's main switch and remote control operation switch turned on. will flow and the driving light will turn on. At this time, both ends of the warning light and warning buzzer are connected in a circuit via the relay contact and the ON side contact of the remote control operation switch, and because they have the same potential, electricity does not flow to the warning light and warning buzzer, and they are turned off. It remains as it is.
Now, as shown in Figure 2, when the remote control operation switch is turned OFF, if the relay turns ON due to an abnormality such as welding of the relay contact, electricity will flow through the OFF side contact of the remote control operation switch as shown by the arrow in the figure. flows and the warning light and warning buzzer turn on.
It alerts you to abnormalities with light and sound. At this time, both ends of the operating light are connected in a circuit via the OFF side contact of the remote control operating switch and the contact of the relay, and have the same potential, so no electricity flows to the operating light and it remains off.

[Effects of the invention] As can be easily understood from the above explanation, this invention uses a two-contact remote control switch, turns on the operating light during normal operation, and activates the relay even when the remote control switch is OFF. When the boiler turns on and the boiler enters operation without permission, the warning light and warning buzzer turn on to notify of an abnormality, and its practical value is great.

Although the present invention has been explained using a wired remote control as an example, it goes without saying that the present invention can be applied to remote control operating devices using media such as sound, light, and radio waves.

[Brief explanation of the drawing]

Figures 1 and 2 are electrical circuit diagrams of the boiler remote control operating device according to the present invention. Figure 1 shows the operating light ON during normal operation, and Figure 2 shows the warning light and warning light when an abnormality occurs. Figure 3 shows an example of a boiler remote control operating circuit with the buzzer turned on, and Figure 4 is an electrical circuit diagram in which an operating light has been added to the circuit in Figure 1 as an improvement. is the main switch of the boiler, is the remote control operation switch, is the relay for boiler operation, is the boiler, is the power supply, is the operating light, is the warning light, is the warning buzzer.

Claims (1)

[Scope of utility model registration request] In the boiler remote control operation device, the boiler main switch, remote control operation switch, and boiler operation relay are connected in series, and an operating light is provided in parallel with the circuit of the operation relay to display the operating status of the boiler. A warning buzzer and a warning light circuit are installed in parallel with the operating light that displays the operating status of the boiler and the power supply, respectively, and when the boiler main switch is ON and the remote control operation switch is ON, the alarm is connected via the ON side contact of the remote control operation switch. Apply electricity, turn on the boiler operation relay, turn on the operation light, leave the warning light and warning buzzer OFF, and if the boiler operation relay is ON even though the remote control operation switch is OFF, the remote control operation switch A boiler remote control device configured to flow electricity through the OFF side contact, turn on the warning light, sound the warning buzzer, and leave the operating light off.