JPH0311226A - Combustion device - Google Patents

Abstract

PURPOSE:To prevent a temperature of a bearing of a rotor motor caused by a thermal conduction from the rotor from being increased and to stop a supplying of oil in case that a rotor motor is locked to promote a safe operation by a method wherein a bearing side of the motor is provided with a cylindrical rotary member having a bottom side and having some cut and rised vanes and with a rotation sensing device in opposition to an outer periphery of the rotary member. CONSTITUTION:A rotation of a rotary member 25 attached to a bearing side of a rotor motor 24 is detected by a rotation sensing device 26 so as to output a driving signal of a fuel pump 34. In case that the rotor motor 24 is locked and the rotor 23 is not rotated due to a certain cause, the fuel pump 34 is not driven, so that fuel is not supplied to the rotor 23 through an oil feeding pipe 33 and an oil is not accumulated at the bottom part of the combustion device. In case that the rotor motor 24 is being rotated, a rotary member 25 is also rotated simultaneously, a part of a primary air 35 is fed to the rotor motor side 24 by central cut and rised vanes of the rotary member 25, thereby a cooling action of the rotor motor 24 is carried out and a temperature of the rotor motor 24 is prevented from being increased due to a thermal conduction of the rotor 23.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustion device used in domestic water heaters, heating equipment, and the like.

2. Description of the Related Art As shown in FIG. 2, a conventional combustion apparatus of this type has an inverted conical rotor 3 facing inside a vaporizing cylinder 2 containing a heater 1, and this rotor 3 is connected to a rotor motor 4, A refueling vibro connected to a fuel pump 5 that supplies fuel is exposed near the rotor 3. A burner head 7 is attached to the other end of the vaporization cylinder 2, 8 is a fan, and 9 is a blower motor that drives the fan 8. Part of the air sent by the blower motor 9 and the fan 8 is used as primary air. It enters through the opening of the vaporizer cylinder 2. On the other hand, the oil supplied from the fuel pump 5 is sent to the rotor 3 from the oil supply vibro, is pulled up to the upper end by the centrifugal force of the rotor 3, and is atomized and sprayed in the circumferential direction by the blades at the upper end. It collides with the inner wall. Since this vaporizing cylinder 2 is heated by a built-in heater 1, the fine oil that collides with the inner wall surface is instantaneously vaporized and mixed with air to form a mixture and burn on the burner door surface. The remaining air was supplied from around the burner head 7 as secondary air to obtain good combustion.

Problems to be Solved by the Invention However, in the above configuration, since the rotor is exposed to the high temperature atmosphere inside the vaporization cylinder, the temperature of the rotor motor bearing increases due to heat conduction from the rotor, causing the rotor motor to malfunction. Make a sound or lock. In addition, if the rotor motor is locked due to wear of the bearings or contact due to eccentricity between the rotor and the carburetor, the oil supplied from the oil pipe will atomize into the carburetor and accumulate at the bottom of the combustion device instead of being sprayed. This poses problems such as creating a risk of ignition, or penetrating the shaft of the rotor motor into the bearing, causing failure of the rotor motor.

The present invention solves these conventional problems by preventing the temperature of the rotor motor bearing from increasing due to heat conduction from the rotor, and also by stopping the oil supply when the rotor motor is locked for some reason. The purpose is to keep you safe.

Means for Solving the Problems In order to solve the above problems, the combustion device of the present invention has a rotating body having a cylindrical bottom and a raised blade in the center on the bearing side of the motor, and an inverted conical shape at the other end. The rotor has a structure in which a fuel supply pipe connected to a fuel pump for supplying fuel faces near the rotor, and a rotation detection device is provided opposite to the outer periphery of the rotating body. be.

According to the above-described structure, the present invention detects whether or not the rotor motor is rotating using a rotation detection device and issues a drive signal for the fuel pump, so that if the rotor motor is locked for some reason, the fuel pump will not be driven. ,
Fuel is not supplied from the oil pipe, and oil may accumulate at the bottom of the combustion device or travel along the shaft of the rotor motor.
It does not enter the bearing of the rotor motor, and when the rotor motor is rotating normally, air is sent to the bearing side of the rotor motor by the cut and raised blades in the center of the rotating body and is cooled. This makes it possible to prevent the temperature of the rotor motor bearing from increasing due to heat conduction from the rotor.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. In FIG. 1, 21 is a heater, 22 is a vaporization cylinder heated by this heater 21, 23 is an inverted conical rotor facing inside this vaporization cylinder 22 and has stirring blades 23' at the upper end, and 24 is this rotor. A rotor motor 25 that drives the rotor 23
26 is a rotating body provided on the bearing side of the rotor motor 24 in the shape of a cylinder with a bottom and having cut and raised blades in the center, and 26 is a position facing the outer circumference of the rotating body 25 for detecting the rotation of the rotating body 25. a rotation detection device 27 provided in the vaporization cylinder 22;
The burner head attached to the other end, 28 is the ignition electrode, 29 is P! A combustion detection device for detecting combustion; 30 is a fan provided at one end of the burner case 31; 32 is a blower motor that drives this fan 30; 33 is connected to a fuel pump 34 that supplies fuel; 35 is the primary air from which the combustion air sent from the fan 30 is sent through the air inflow hole A36, and 37 is the secondary air sent through the air inflow hole B38. .

In the above configuration, fuel is supplied to the rotor 23 from the fuel pump 34 via the refueling vibrator 33. This rotor 2
3 is rotated via the rotor motor 24, the fuel supplied to the rotor 23 is pumped up to the upper part of the rotor 23, and is atomized by the stirring layer 1123' at the upper end.
It collides with the inner wall surface of the vaporization cylinder 22. Since this vaporization tube 22 is heated by the heater 21, the fine fuel that collides with the inner wall surface is instantly vaporized. Air is supplied by the fan 30 and is divided into primary air 35 and secondary air 37 by the air inlet 7LA36 and the air inlet hole B38.

Primary air 35 is sent into the vaporization tube 22 and the rotor 23
The mixture is stirred by the stirring blade 23', mixed with the vaporized fuel, and is ejected from the burner head 27 as an air-fuel mixture. The air-fuel mixture is ignited by a spark discharge from the ignition electrode 2, and secondary air 37 is supplied from around the burner head 27 to obtain good combustion, and the combustion detection device 29 determines whether combustion is maintained. do.

Further, a rotor 25 is attached to the bearing side of the rotor motor 24, and has a bottomed cylindrical shape and has cut and raised blades in the center. A rotation detection device 26 is provided at a position where the rotation detection device 26 is rotated.

The rotor 23 is supplied from the fuel pump 34 via the refueling vibrator 33.
If the rotor 23 is not rotating, the fuel supplied to the combustion chamber 122 will not be supplied to the vaporizer 122, resulting in an oil pool at the bottom of the combustion device. Therefore, by detecting the rotation of the rotating body 25 attached to the bearing side of the rotor motor 24 by the rotation detection device 26 and outputting a drive signal for the fuel pump 34, the rotor motor 24 is locked for some reason and the rotor 23 does not rotate. If the fuel pump 3
4 is not driven, fuel is not supplied to the rotor 23 via the oil feed pipe 33, and no oil stagnation occurs at the bottom of the combustion device. In addition, the rotor motor 24
is rotating, the rotating body 25 also rotates at the same time,
The cut and raised blades at the center of the rotating body 25 cause the primary air 3 to
By sending a part of the rotor motor 24 to the rotor motor 24 side, the rotor motor 24 is cooled and the temperature of the bearing of the rotor motor 24 is prevented from rising due to heat conduction from the rotor 23.

Effects of the Invention As described above, the combustion apparatus of the present invention provides the following effects.

(1) A rotating body is attached to the rotor motor on the same axis as the rotor, and a rotation detection device is installed to detect the rotation of the rotating body, so if the rotor motor becomes long for some reason and the rotor stops rotating, Since the rotation detection device detects this and stops driving the fuel pump, fuel is no longer supplied to the rotor, which has the effect of preventing an oil pool from forming at the bottom of the combustion device.

(2) When the rotor motor is rotating normally, the rotor is also rotating at the same time, and the cut and raised blades in the center of the rotor send some of the secondary air to the rotor motor to cool the rotor motor. This has the effect of preventing the temperature of the rotor motor bearing from increasing due to heat conduction from the rotor.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a combustion device according to an embodiment of the present invention, and FIG. 2 is a side sectional view of a conventional combustion device. 22... Carburizer cylinder, 23... Rotor, 2
4... Rotor motor, 25... Rotating body, 26... Rotation detection device, 33... Fuel supply pipe, 34... Fuel pump, 35...
...-Next empty entry.

Claims (1)

[Claims] A motor, a rotating body having a cylindrical shape with a bottom and cut and raised blades in the center on the bearing side of the motor, an inverted conical rotor at the other end, and a fuel pump for supplying fuel are connected, and a rotor is connected to the rotor in the vicinity of the rotor. A combustion device comprising: a fuel supply pipe facing the rotary body; and a rotation detection device provided at a position facing the outer circumferential portion of the rotary body.