JPH0238203Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to an oil stove equipped with a cartridge tank, and particularly to a water detection device thereof.

<Prior Art> In general, oil stoves have a device that detects the presence of moisture because the combustion condition worsens when moisture is mixed in with the oil.

For example, in a portable oil stove, a hole is drilled in the combustion tank and a metal water detection electrode is inserted into the tank to detect moisture in the oil. Not only does it require drilling a hole for this purpose, but it also needs to be sealed to prevent oil leakage.Also, since the combustion tank itself is made of metal, special insulators are required to insulate it from the water detection electrode. There were various drawbacks such as the need for equipment.

<Purpose> The present invention has been made to eliminate the above-mentioned drawbacks, and uses an oil pan provided in a combustion tank to provide a water detection electrode.

<Example> Fig. 1 is a cross-sectional view showing the main parts of a combustion tank, in which 1 is a combustion tank, 2 is a cartridge tank mounting opening formed on its upper surface, into which an oil pan 3 made of resin is fitted. ing. 4 is a concave water reservoir formed on the lower surface of the combustion tank.

The oil pan 3 is made of electrically insulating resin, and has a protrusion 5 formed at the center of the bottom and an oil outlet 6 formed at the periphery of the bottom. Reference numerals 7 and 7 designate a pair of water detection electrodes in an inverted L shape, which are integrally buried in the oil pan 3, with the lower end protruding into the water reservoir 4 and the upper end extending outward from the flange 5a of the oil pan 3. It extends in the direction. Although only one water detection electrode 7, 7 is shown in the drawing, in reality, two water detection electrodes 7, 7 are arranged at a predetermined interval.

The water detection electrodes 7, 7 are connected to a water detection circuit (not shown) via lead wires. This water detection circuit detects the presence or absence of water based on the resistance value between the electrodes 7, 7, and by detecting the presence of water, it notifies you of this or issues a signal to stop combustion.

When the cartridge tank is set in the cartridge tank mounting port 2, the oil in the cartridge tank flows into the oil pan 3 and flows out to the core side through the oil outlet 6. When water is mixed in oil, water has a higher specific gravity, so water accumulates in the water reservoir 4, causing a short circuit between the water detection electrodes 7, 7. This short circuit reduces the resistance value between the electrodes 7, 7, so the water detection circuit detects this and notifies you of water contamination and stops the combustion operation.

In this way, since the water detection electrodes 7, 7 are integrated with the oil pan 3, just by fitting the oil pan 3 into the mounting opening 2 of the combustion tank 1, the water detection electrodes 7, 7 can be set in a predetermined position, and 1 and is insulated. Therefore,
There is no need to make a hole for inserting the water detection electrode or to insulate the electrode from the combustion tank.

<Other Embodiments> As shown in FIG. 2, instead of providing a water reservoir in the combustion tank 1, the oil spill portion 8 of the oil pan 3 is provided on the peripheral side wall of the oil pan 3 at a position slightly higher than the bottom. The inner bottom portion may also be used as the water reservoir portion 4. In this case, the lower ends of the water detection electrodes 7, 7 extend below the oil spill portion 8.

<Effects> As mentioned above, according to the present invention, the water detection electrode can be installed using the oil pan, so it is not necessary to provide a hole for inserting the water detection electrode in the combustion tank as in the conventional case, or to connect the water detection electrode to the combustion tank. This has the advantage that there is no need to measure the insulation between the

[Brief explanation of the drawing]

FIG. 1: A sectional view of essential parts of an embodiment of the present invention. Second
Figure: Main part sectional view of another embodiment of the present invention. Symbol: 3: Oil pan, 4: Water reservoir, 7, 7: Water detection electrode.

Claims (1)

[Scope of Claim for Utility Model Registration] A water detection device for an kerosene stove in which a resin oil tray is provided at the cartridge tank mounting opening of the combustion tank, characterized in that a water detection electrode is provided in the oil tray. .