JPH0318848Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a combustion state notification device for adjusting the calorific value of a liquid fuel combustor, such as a portable kerosene stove.

<Prior Art> In a conventional kerosene stove, as shown in FIGS. 8 and 9, the reference line 2a of the knob 2 of the lever-type wick adjustment member 1 is aligned with the ignition position 3, adjustment range 4, and extinguishing position 5 on the front panel P. The combustion status notification device was configured to match the display area. However, since the display section is designed to be small in consideration of design and space considerations, it has the disadvantage that it is very difficult to see when used in a dimly lit room or by people with poor eyesight. Therefore, even during normal combustion, the user can adjust the firepower by adjusting the wick up and down.
If the firepower is too low, incomplete combustion may occur, resulting in soot and unpleasant odors.On the other hand, if the firepower is made too strong (if it is too strong, the flames will be large and it will be easy to notice). There were problems such as concerns about flames caused by overheating.

<Purpose> The present invention was made to eliminate the drawbacks of the conventional technology.It can reliably notify the user of the burning position of the wick, and can also issue a warning when the wick is lowered too far, while reducing power consumption. The purpose of the present invention is to provide a combustion state notification device with a small amount of combustion.

<Example> Hereinafter, an example of the present invention will be explained with reference to FIGS. 1 to 7. The combustion state notification device of the present invention is incorporated in the lifting mechanism of the wick of a liquid fuel combustor (kerosene stove), and the combustion state The notification device includes three appropriate notification elements that emit a safety signal (safety color or safety sound) when the wick adjustment member 1 (or its interlocking member) that adjusts the combustion position of the liquid fuel combustion wick is at the appropriate position 1B. green LEDs L1, L2, L
3 and the core adjustment member 1.
an over-lowering light-emitting element E consisting of a red LED as an over-lowering alarm element that emits a warning signal (warning color or warning sound) when the core is at an over-lowering position 1A;
A notification circuit 6 is provided which includes an over-raised light emitting element F consisting of a red LED as an over-raised alarm element that issues a warning signal when the core adjusting member 1 is at the over-raised position 1C.

The too-lowered light emitting element E, the proper light-emitting element G, and the too-raised light emitting element F of the notification circuit 6 are connected to the operating path 7 of the knob 7 of the core adjustment member 1 on the panel P.
A touch-type switch 8 is provided which is arranged in order from top to bottom adjacent to A and which automatically energizes the notification circuit 6 only when adjusting the core adjustment member 1, and which controls the position of the core adjustment member 1 and the A switching device D that switches the on state of each light emitting element in correspondence with the on state is provided on the substrate 9.
The rotary slider 10 is fixed to the rotary support shaft 1a of the core adjustment member 1 supported by the rotary type variable resistor VR with a knurled fitting 11, and the case 12 of the variable resistor VR is attached to the base plate 9. Cut and raised piece 9a
is fixed with screws 13.

The touch switch 8 is comprised of a pair of terminals 8a and 8b provided on the synthetic resin knob 7 of the core adjustment member 1 so as to sense that the user is pinching the knob 7.

In addition, in FIG. 5, 14 is a lead wire. In addition, in the electric circuit shown in Figure 3, V is a dry battery power supply, IC1 is an operational amplifier, Tr is a transistor, and R
1 to R9 are resistances, among which R3 represents the user's human body resistance. In this circuit, when the voltage at point B is (R3/R2+R3-R5/R4+R5)>0,
=V...(A) When (R3/R2+R3-R5/R4+R5)<0, B
=0...(b), and when the condition of formula (b) is met, the transistor Tr
is turned on and the notification circuit 6 is turned on.

Now, the circuit is formed so that R2=R4=R5>R3, so when the user does not touch the touch sensor 8, R3=∝ and R3/R2+R3-R5/R4+R5=1/(R2/R
3) +1 -1/(R4/R5)+1=1/(1/∝)+1 -1/1+1=1-1/2>0 This means that the condition of formula (a) is satisfied and the transistor
Tr is off and the notification circuit 6 is off, but when the user touches it, R3/R2+R3-R5/R4+R5=1/(R2/R
3) +1 -1/2<0 (because R2>R3), and the condition of formula (b) is satisfied and the transistor
The Tr is turned on and the notification circuit 6 is turned on.

Next, to explain the operation, the wick of the combustor is raised and ignited by pushing the wick adjustment member 1 down to the ignition position, and when extinguishing, the wick is lowered and automatically extinguished by pressing the extinguishing button 15. Then, the user grips the knob 7 and moves the wick adjustment member 1 up and down to adjust the position of the wick to obtain the desired firepower. At this time, the touch switch 8 is on, so the notification circuit 6 is on. and the first
When the core, that is, the core adjustment member 1 is at the proper position 1B as shown in the imaginary line in the figure, the variable resistor VR changes to the resistance value corresponding to that position, so the green LED of the proper light emitting element G is determined by the action of the IC2 of the notification circuit 6. L
The red LEDs of one to three LEDs 1, L2, L3 and the over-lowered light emitting element E emit light, and the user confirms that these include the safety color (green).

However, the position of the core, that is, the core adjustment member 1 is
If the core is lowered too far at position 1A as shown by the solid line in the figure, the variable resistor VR changes to the resistance value corresponding to that position, so only the red LED of the light emitting element E that is lowered too much will emit light, and the user will see the warning color (red). , lower the core adjustment member 1 a little until the color includes the safety color.

Conversely, if the position of the core adjustment member 1 is at an excessively raised position 1C as shown by the imaginary line in FIG.
L1, L2, which are green LEDs of the appropriate light emitting element G,
All L3 lights up and the user confirms the warning color, and then press the core adjustment member 1 until the color includes the safety color.
Raise it a little.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention. For example, in the present invention, the core adjustment member When the is a dial type, a variable resistor may be provided at the center of rotation, and each notification element, that is, a light emitting element, may emit light one by one in accordance with the movement of the core adjustment member. The element may be composed of a warning buzzer that is turned on when the core adjustment member is too low or too high, and a safety buzzer that is turned on when the core adjustment member is in an appropriate position. Furthermore, if the core adjustment member is in an excessively raised position, a large flame will be emitted and it will be easy to notice, so the configuration may be such that no alarm is issued.

<Effects> As is clear from the above description, the present invention includes a proper notification element that issues a safety signal when the wick adjusting member that adjusts the combustion position of the liquid fuel combustion wick or its interlocking member is in the proper position, and the wick. An alarm circuit is provided that includes an over-lowering alarm element that issues a warning signal when the adjusting member is in an over-lowered position, and a switch is provided that detects that a user is pinching the knob of the core adjusting member. The notification circuit is configured to be automatically energized by the sensing operation of the switch.

Therefore, in the present invention, it is possible to reliably notify the user of the burning position of the wick by using the proper notification element and the too-lowered notification element, and also to issue a warning when the wick is in the too-lowered position. As a result, it is possible to provide a combustion state notification device with low power consumption, which has an excellent effect of preventing soot and unpleasant odors caused by incomplete combustion when the heating power is too low.

[Brief explanation of the drawing]

FIG. 1 is a side view of the wick lifting mechanism of a combustor equipped with an embodiment of the combustion state notification device of the present invention in a state where the wick is lowered too much, and FIG. 2 is a front view of the combustion state notification device.
FIG. 3 is an electric circuit diagram, FIG. 4 is a perspective view of the knob of the core adjustment member, and FIG. 5 is a sectional view thereof.
Figure 6 is an exploded perspective view of the concentric adjustment member and variable resistor;
FIG. 7 is a front view of the concentric adjustment member and the variable resistor assembled, FIG. 8 is an overall perspective view of a conventional kerosene stove, and FIG. 9 is an enlarged front view of the combustion state display device. 1... Core adjustment member, 1A... Core lowered position,
1B... Proper position, 1C... Center-up position, 1
a...Rotation shaft, 6...Notification circuit, 7...Knob portion, 7A...Operating path, 8...Touch switch,
9... Board, 9a... Cut and raised piece, 10... Rotating slider, 11... Knurled fitting, 12... Case, 13... Screw, D... Switching device, E... Too low light emitting Element, F... Excessively raised light emitting element, G...
Appropriate light emitting elements, L1, L2, L3...Green LED,
VR...Rotary type variable resistor.

Claims (1)

[Scope of utility model registration request] A propriety notification element that issues a safety signal when a wick adjustment member that adjusts the combustion position of the liquid fuel combustion wick or its interlocking member is in a proper position, and a warning signal that issues a warning signal when the wick adjustment member is in a position where the wick is lowered too far. An alarm circuit having an over-lowering alarm element is provided, and a switch is provided for sensing that the knob of the core adjustment member is being pinched by the user, and the sensing operation of the switch automatically causes the alarm circuit to A combustion state notification device for a liquid fuel combustor, characterized in that it is configured to conduct electricity.