JP2707813B2 - Liquid fuel combustion device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a liquid fuel combustion apparatus for burning liquid fuel.

2. Description of the Related Art Generally, a combustion apparatus of this type is configured as shown in FIGS. That is, in FIGS. 3 and 4, reference numeral 1 denotes a bottomed cylindrical vaporizing cylinder having a sheath heater 2 buried in the upper part thereof, and a throat 4 for injecting combustion air at the same position as the nozzle 3 for injecting fuel to the side. And open. The nozzle 3 is connected through an oil feed pipe 5 to an electromagnetic pump 7 that sucks fuel in a fixed tank 6. The fuel in the fixed tank 6 is supplied from the cartridge tank 8 to the fixed tank 6 via the base 9 and the cartridge tank receiver 10. A fuel replacement projection 10a is mounted on the bottom of the cartridge tank receiver 10, and a filter 10b is mounted on the side.
The throat 4 is connected to a burner blower 12 through an air supply hose 11.
Is connected to Reference numeral 13 denotes a flame holding plate mounted on the upper portion of the vaporizing cylinder 1 and having a plurality of flame holes 14 on a side surface. The vaporizing cylinder 1
Is covered with a burner case 15 having an open top, and an ignition electrode 16 and a frame rod 17 are placed on the burner case 15.

The operation of the combustion device configured as described above will be described below.

The fuel in the cartridge tank 8 is supplied to the fixed tank 6 via the base 9 and the cartridge tank receiver 10 attached thereto.
It is supplied until the oil level reaches inside. The fuel in the fixed tank 6 is sucked by the electromagnetic pump 7, ejected from the nozzle 3 through the oil supply pipe 5 into the vaporization cylinder 1, and the combustion air sent from the burner blower 12 is supplied through the air supply hose 11. The gas is sent from the throat 4 into the vaporizing cylinder 1 via the throat 4. On the other hand, the vaporizing cylinder 1 is previously heated to a high temperature by a built-in sheath heater 2, and the injected fuel is instantaneously vaporized in the vaporizing cylinder 1,
It mixes with the combustion air sent from the throat 4 and is ejected from a plurality of flame holes 14 on the side of the flame stabilizer 13. The jetted gas mixture is ignited by an ignition electrode 16 provided in the vicinity of the flame holding plate 13 to form a flame, and the flame is detected by a flame rod 17 to keep burning.

However, in the above-described conventional configuration, when the fuel is supplied to the cartridge tank 8 at a low temperature and set in the fixed tank 6,
When the fuel in the cartridge tank 8 is discharged from the base, the internal pressure of the cartridge tank is higher than the external pressure, so that the fuel squirts and stabilizes in the fixed tank 6 via the filter 10b of the cartridge tank receiver 10. Therefore, there is a problem that some fuel flows out from the upper part of the cartridge tank receiver 10 to the upper surface of the fixed tank 6 and overflows outside the apparatus.

In view of the above problems, an object of the present invention is to provide a highly stable device that prevents fuel from flowing out of the device during low-temperature refueling.

Means for Solving the Problems In order to solve the above problems, a liquid fuel combustion device according to the present invention is provided with a plurality of holes on an upper peripheral wall surface of a cartridge tank receiver and a flange provided on an upper opening edge of the cartridge tank receiver. A plurality of cutout holes are provided in the outer peripheral portion of the side wall of the end portion, and a plurality of holes are provided in the upper surface of the fixed tank facing the flange portion.

According to the present invention, most of the fuel ejected from the cartridge tank by low-temperature refueling passes through the plurality of through-holes formed in the upper peripheral wall surface of the cartridge tank receiver and the upper surface of the cartridge tank receiver, and has a flange portion. The fluid flows into the upper portion of the fixed tank in the flange portion through the cutout hole provided in the outer peripheral portion of the side wall in contact with the fixed tank, and is collected in the fixed tank through a plurality of holes provided in the upper surface of the fixed tank.

An embodiment of the present invention will be described below with reference to the drawings. Note that the same parts as those described in the above conventional example are denoted by the same reference numerals and description thereof is omitted, and only different parts will be described.

The cartridge tank receiver 10 has a flange at the upper opening edge.
It is formed in a cylindrical shape with a bottom having 10 g, a plurality of through holes 10 c are provided in the upper peripheral wall surface, and a plurality of notched holes are formed in the outer peripheral portion of the side wall portion of the same flange portion 10 g which contacts the fixed tank 6. Ten
e is provided. A radial rib 10f for increasing strength is provided on the lower surface of the flange portion 10g, a plurality of notched holes 10d are provided in the rib 10f, and a plurality of holes are provided on the upper surface of the fixed tank 6 facing the flange portion 10g. 6a is provided.

With the above configuration, even if the fuel from the cartridge tank 8 is not smoothly supplied to the fixed tank 6 via the filter 10b at the time of low-temperature refueling, the cartridge tank 8
The fuel squirted from the tank flows into the space between the flange portion 10g and the upper surface of the fixed tank 6 through the plurality of through holes 10c provided in the upper peripheral wall surface of the cartridge tank receiver 10, and the plurality of fuel holes provided on the upper surface of the fixed tank 6 It is collected in the fixed tank 6 from the hole 6a. Also, at this time, even if there is fuel that cannot flow into the plurality of through holes 10c provided in the upper peripheral wall surface of the cartridge tank receiver 10, this fuel passes over the flange portion 10g of the cartridge tank receiver 10 and is fixed from outside. It flows into the upper surface of the tank 6 and flows into the flange portion 10g through a plurality of notched holes 10e provided in the outer peripheral portion of the side wall portion of the flange portion 10g that comes into contact with the fixed tank 6, and similarly to the above, the plurality of holes provided on the upper surface of the fixed tank 6 Fuel is collected into the fixed tank 6 from the holes 6a. In addition, the rib 10f of the flange portion 10g provided for increasing the strength is partially provided with a notch hole 10d, and is electrically connected in the circumferential direction of the cartridge tank receiver 10, so that the fuel that has been spouted smoothly can be removed. Recovery into the fixed tank 6 can be realized, and a highly safe device can be provided.

As described above, according to the present invention, a through hole is formed in the upper peripheral wall surface of the cartridge tank receiver, and the end of the flange portion of the cartridge tank receiver is substantially perpendicular to the side wall so as to contact the upper surface of the fixed tank. A plurality of cutout holes are provided in the outer peripheral portion of the side wall, and a plurality of holes for fuel recovery are provided on the upper surface of the fixed tank facing the flange portion, so that fuel can smoothly pass through the filter when refueling at a low temperature. Without this, the fuel can be prevented from leaking out of the device, and the fuel can be recovered in the fixed tank, so that a highly safe device can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a liquid fuel combustion apparatus according to an embodiment of the present invention, and FIGS. 2A, 2B, and 2C are side views, sectional views, and bottom views of the cartridge tank receiver. FIG. 3 is a cross-sectional view of a conventional combustion device, and FIG. 4 is a cross-sectional view of the refueling portion. 6 ... fixed tank, 6a ... fixed tank upper surface hole, 8 ... cartridge tank, 10 ... cartridge tank receiver, 10
c: Through-hole, 10g: Flange.

Claims (1)

(57) [Claims] 1. A cartridge tank for supplying liquid fuel, a fixed tank for storing liquid fuel, and a bottomed cylindrical cartridge tank receiver for supporting the cartridge tank. A filter is attached to the side, a plurality of through holes for ventilation and oil passage are provided on the outer periphery of the upper side surface, and a protrusion is provided at the bottom to fit the cartridge tank, and a fixed tank is provided at the upper opening edge. A flange portion serving as a mounting portion is provided, an end portion of the flange portion has a substantially vertical side wall so as to be in contact with the upper surface of the fixed tank, and a plurality of cutout holes are provided in an outer peripheral portion of the side wall, A liquid fuel combustion device having a plurality of holes for collecting fuel on an upper surface of the fixed tank facing the flange.