JPH0125240Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a remote control transmitter for selectively instructing functions such as operation and extinguishing of a combustion type hot air heater using oil, gas, etc. as a heat source using a remote control.

<Prior art> Most remote control transmitters for this type of hot air heater are wireless types that use infrared light, but all of them simply have an instruction switch that corresponds to the function of the heater itself. It's nothing more than that.

Therefore, even if you press the instruction switch by mistake, the main unit will be controlled according to the instruction switch that was pressed, so for example, even if you have set it to the best condition, the setting changes and you have to perform the setting operation again. There is the inconvenience of having to do this.
Particularly in families with children, such incidents not only occur frequently due to children's mischief, but also pose a safety problem.

<Purpose> The present invention was made to eliminate these drawbacks, and is provided with a lock switch that disables the operation of instruction switches other than the fire extinguisher switch.

<Example> In the figure, 1 is an oil gasification hot air heater main body, and the main mechanical elements are a preheating heater 2, a combustion motor 3, an oil pump 4, an igniter 5, a convection motor 6, and a humidifier 7. is provided. The driving of these elements is turned on by the sequence control circuit 8.
This is selectively performed by a relay circuit 9 that is controlled to be turned off.

A room temperature sensor 10, a room thermo circuit 11, a humidity sensor 12, etc. are provided in order to appropriately drive each of the above elements to maintain the best indoor conditions, and the sequence control circuit 8 is controlled based on their outputs. . A heater temperature sensor 13 senses the temperature of the heater 2, controls the sequence control circuit 8 via the heater thermocircuit 14, and turns on and off the power supply to the heater 2.

15 is a seismic switch that detects earthquakes, etc. and the main body 1
When one of the safety sensors such as an overheating thermoswitch that detects overheating is activated, the self-holding relay in the self-holding safety circuit 16 is turned off, and the sequence control circuit 8 is made to perform a fire extinguishing sequence. .

17 is a changeover switch that selectively selects "off/reset", "remote control operation", and "forced operation";
At the time of "off/reset", whatever signal is being transmitted from the remote control transmitter 20, which will be described later, is ignored and the sequence proceeds to the extinguishing mode. By doing this, the main unit can be protected against malfunctions, malfunctions, or battery exhaustion of the remote control transmitter during operation, malfunctions of the main unit 1 due to interference with wireless remote controllers of other devices or disturbance light, and failures of the receiving unit 18. 1. Reliable "fire extinguishing" operation can be ensured. Also, in "forced operation", whatever signal is being transmitted from the remote control transmitter is ignored and automatic thermo-operation is performed according to a certain fixed temperature control, for example, a setting of 22 degrees Celsius. By doing so,
Even if the remote control transmitter is lost, malfunctions, the battery runs out, or the receiving unit malfunctions, the function as a heater can be maintained. In the "remote control operation" position, the receiving unit 18 converts the serial infrared light signal from the remote control transmitter 20 into a serial electric signal, and the logic circuit 19 determines the contents of the command and transmits it to the sequence control circuit 8. "Forced driving"
When safety devices such as the anti-seismic fire extinguishing switch and overheat prevention thermostat are activated in the "remote control operation" position, the self-holding relay of the self-holding safety circuit turns OFF, the oil pump drive relay turns OFF, and the fire extinguishing sequence begins. By using the off position of the self-holding relay as the "off/reset" position of the changeover switch,
The number of switch positions can be saved by one.

The remote control transmitter 20 has touch-switch type instruction switches for fire extinguishing, operation, timer, humidification, etc. on the surface.
K ₁ , K ₂ , K ₃ , K _{4 .} . . and a mechanically locked lock switch K ₀ in a recess on the back surface.
Also, inside the transmitter is a general-purpose IC for remote control transmitter.
Alternatively, microcomputer IC ₁ is provided. This IC ₁
A predetermined voltage is applied from the power supply 21 to the V _D and V _S terminals of the IC 1, and an external oscillator OSC is connected to the OSC-IN and OSC-OUT terminals to send a predetermined basic pulse into the IC ₁ . C ₁ , C ₂ , and C ₃ are capacitors. The φ terminal is used to derive a scan signal (repetitive pulse), and is connected to the key output line 23. 24, 25, 26, and 27 are the above-mentioned instruction switches K ₁ , K ₂ , respectively in order from the one closest to the φ terminal.
These are key input lines connected to the key output line 23 via K ₃ and K ₄ , and are connected to the input terminals I ₁ , I ₂ , I 3 , and I ₃ of IC ₁ , respectively.
Connected to I ₄ . The lock switch _K0 is interposed between the key output line 23 at a position where the fire switch _K1 is connected and a position where the operation switch _K2 is connected.

The above switches K ₁ to K ₄ and input terminals I ₁ to I ₄ are 1
Since there is a one-to-one correspondence, the scan signal is fed back to the input terminals _I1 to _I4 corresponding to the switches turned on by manual operation, for example. Each input terminal I ₁ ~ _{I 4}
is set to output a different serial bit pulse (code signal) from the P terminal when it receives a scan signal, so in the end, the serial bit pulse corresponding to the operated switch will be output from the P terminal.
Output from the terminal. This pulse is supplied to the base of the LED driving transistor Tr ₁ , causing the LED to blink. R ₁ and R ₂ are resistances. Therefore, when one of the instruction switches K ₁ to _{K 4} is operated, the code signal corresponding to this switch is converted into blinking infrared light and sent to the receiving unit 18.

In such a configuration, two or more switches
When K ₁ to _{K 4} are operated simultaneously, scan signals are input to input terminals I ₁ to _{I 4} at the same time, but input memory flags or flip-flops (not shown) corresponding to I ₁ to _{I 4} are If this is provided, all the flags of the terminals to which input is applied will store, for example, "1". Therefore, the system is designed to detect the presence or absence of an input based on the stored content of this flag group as "1" or "0", and when multiple flags store "1", I ₁ → I ₂ → I ₃ → If priority is given to the _I1 side such as _I4 , the priority order of manual operations will be "extinguishing", "driving", "timer", and "humidification". In this way, if the switches are pressed at the same time, the ``extinguishing'' signal will have priority, and even if the switches fail, the ``extinguishing'' signal will still be sent, which is useful for safety design.

Also, since a lock switch _K0 is inserted in the key output line, if this switch _K0 is turned off, even if switches other than the fire switch _K0 are turned on,
The scan signal is not fed back to the input terminal side. Therefore, even if a child plays a trick, an adult misoperates, or a dog or cat steps on the switch, there is no need to worry about starting operation or changing the timer settings. On the other hand, if the vehicle is locked while driving, it has the advantage that if an emergency situation arises in which it is necessary to extinguish a fire, a ``extinguishing'' signal can be transmitted without releasing the lock.

Instructions from the remote control transmitter 20 are possible only when the changeover switch 17 on the main body 1 side is in the "remote control operation" position. That is, simply switching the changeover switch 17 from "off/reset" to "remote control operation" does not start operation, but follows the next command sent from the remote control transmitter 20. Also, when switching from "forced operation" to "remote control operation", the device temporarily enters the fire extinguishing mode and then follows the command sent from the remote control transmitter 20. By doing this, the design prioritizes "extinguishing fires", and whenever switching to "remote control operation", the system automatically starts fire extinguishing stop mode, allowing the user to switch to remote control with peace of mind.

Oil- or gas-fired appliances must always be designed with the risk of fire accidents in mind. In this respect, the present invention puts into practice the idea of prioritizing "extinguishing fire" and fail-safe, and is extremely useful for wireless remote control of combustion appliances.

<Effects> As described above, according to the present invention, by using the lock switch, it is possible to prevent erroneous operations or changes in instruction contents due to mischief. Moreover, in the event of an emergency fire extinguishment, there is the advantage that extinguishing instructions can be transmitted regardless of the lock switch.

[Brief explanation of the drawing]

The drawing is a block diagram of the main parts of the present invention. Code, 1...Heater body, 20...Remote control transmitter, IC ₁ ...Remote control IC, _K0 ...Lock switch, _K1 ...Fire switch, _K2 ...Operation switch, φ...Scan signal output Terminals, _I1 to _I4 ...Input terminals.

Claims (1)

[Scope of claim for utility model registration] Combustion type hot air heater body that has multiple functions including operation, temperature adjustment, humidification, timer, and fire extinguishing, and a remote control transmitter that has an instruction switch that selectively instructs these multiple functions. 1. A remote control transmitter for a warm air heater comprising a hot air heater, characterized in that the hot air heater is equipped with a lock switch that disables instructions from the instruction switches other than the instruction switch for instructing extinguishing.