JPH0133961Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pot burner that is equipped with an electromagnetic ignition heater in the burner pot and supplies fuel to the burner pot after waiting for the temperature of the heater to rise or the temperature of the pot to rise due to the heater.

Conventionally, a type is generally known in which the temperature of the outer wall of the pot burner is directly detected by a detector and fuel is supplied to the burner pot after the temperature of the burner pot reaches a predetermined temperature.

However, the temperature of the outer wall of the pot reaches 200℃ to 400℃. Temperature detectors that can withstand such high temperatures are expensive;
Moreover, as a result of its high operating point, the temperature cannot be detected until after the pot burner has reached a high temperature, resulting in a long warming time. In addition, it is possible to use an inexpensive temperature detector that operates at low temperatures to detect and control the ambient temperature around the pot, but in this case as well, it takes time to detect the temperature and is affected by the outside temperature. It is inconvenient to receive a lot of damage.

The present invention was developed in view of the current situation, and includes an electric ignition heater 2 inside the burner pot 1.
The heater 2 or the burner pot 1 by the heater 2
In the type that supplies fuel to the burner pot 1 and blows air to the burner pot 1 after waiting for the temperature to rise, the heater 2 is equipped with a heat conductive heater having tongues 3a that abut against the outer wall of the burner pot 1. Holder 3
At the same time, a temperature sensor 4 is attached to the holder 3.
A blower outlet 6 is provided in a portion of the ventilation path 5 for blowing a portion of the air onto the holder 3 or the temperature sensor 4.

In the illustrated example, the holder 3 is supported by the burner pot 1 on a tongue piece 3a facing the lower surface of the burner pot 1 directly below the air pipe 5 to the burner pot 1, and the heater 2 is attached to the tip of the tongue piece 3a. The grips 3b and 3c for gripping the temperature sensor 4 are provided close to each other, and the grips 3b support the outer end of the ignition heater 2, which also serves as the ignition heater, and the inner end faces into the burner pot 1. At the same time, the grip part 3
c is made to hold a thermoswitch having a bimetal thermostat as a movable contact as the temperature detector 4, an air outlet 6 is provided on the lower surface of the air pipe 5, and air is blown from the air outlet 6 toward the temperature detector 4. I decided to put it out. However, it may also be provided on the lower surface of the air chamber 5a surrounding the burner pot 1, as shown in FIG.

In this case, during warming-up without blowing air to the pot burner while the ignition heater is rising to a predetermined temperature or the burner pot is being raised to a predetermined temperature by the heater, the holder 3 or the temperature sensor 4 will naturally be turned off by the blower. Therefore, since there is no need for cooling, the temperature detector 4 rises to a predetermined temperature relatively quickly and can detect the temperature rise relatively quickly, and the temperature of the ignition heater or burner pot rises to a predetermined temperature. After that, the temperature sensor 4 can be cooled down by blowing air, and the temperature sensor 4 can be heated to 70℃, for example.
It is possible to use a temperature detector 4 that operates at a relatively low temperature, such as turning on at 45°C and turning off at 45°C.
The ignition heater 2 is constructed of, for example, a rod-shaped ceramic heater that heats not only the portion facing into the burner pot 1 but also the portion protruding to the outside.

1 and 2 show an embodiment in which a pot burner A is used as a preheating burner and a pilot burner for a vaporizing burner B. In this case, the pot burner A has a ventilation passage 5 for supplying air thereto. The vaporizing burner B is supported so that only the tip of the vent pipe C is positioned below the vaporizing burner B.

In this case, an electrical insulating material D is sometimes interposed between the tip of the ventilation pipe C and the pot burner A, and also between the pot burner A and the oil supply pipe E connected thereto.

In this case, even if the ceramic heater serving as the ignition heater 2 were to leak electricity for some reason, it would not leak outside, making it safe. In the drawing, F is a fan that blows air to vaporizing burner B and pot burner A.

Combustion control by the temperature detector 4 is performed by, for example, the circuit shown in FIG.
A timer T, a power switch SW, which is connected to the power supply through the ignition heater H, which is connected to the power supply through the contact TS of the timer T, and the power switch SW.
It also includes a blower motor M, an electromagnetic pump P, and a coil SV of an electromagnetic valve interposed in the fuel supply path, which are connected via a thermoswitch as the temperature sensor 4, and when the power switch SW is closed. , the timer T operates for a certain period of time, during which time the ignition heater 2 is operated.

This operation of the ignition heater 2 closes the thermoswitch 4 and excites the blower M, the electromagnetic pump P, and the coil SV of the electromagnetic valve. Therefore, fuel is supplied to the burner pot 1, and air is blown by the blower M to cause combustion in the burner pot 1.

The timer T sets the time to open the contact TS in anticipation of the start of the combustion.

In this way, according to the present invention, an electromagnetic ignition heater 2 is provided in the burner pot 1, and the heater 2
The heater 2 is fixed to the outer wall of the burner pot 1 in a type that supplies fuel to the burner pot 1 and blows air to the burner pot 1 after waiting for the temperature of the burner pot 1 to rise or the temperature of the pot 1 to rise due to this. The holder 3 supports the holder 3.
Since the temperature sensor 4 is supported by the holder 3 or the temperature sensor 4, and the outlet 6 for blowing a part of the air is provided on the holder 3 or the temperature sensor 4, it is possible to raise the temperature of the heater to a predetermined temperature or to set the burner pot to a predetermined position by the heater. Since the holder 3 or the temperature sensor 4 is not cooled down during the rise to the temperature, the temperature sensor can relatively quickly capture the predetermined temperature, and after that, the temperature is increased by the air from the air outlet 5. This has the advantage that it can be cooled and an inexpensive temperature detector 4 with a relatively low operating temperature can be used.

[Brief explanation of the drawing]

Fig. 1 shows one example of implementing the present invention, Fig. 1 is a cutaway side view, Fig. 2 is an enlarged cutaway sectional view of the main part, Fig. 3 is a slope view of the holder, and Fig. 4 is a cutaway side view. FIG. 5 is an enlarged cross-sectional view showing a modification, and FIG. 5 is a control circuit diagram. 1...burner pot, 2...ignition heater, 3...
...Support, 4...Temperature detector, 5...Ventilation duct, 6
...Air outlet.

Claims (1)

[Scope of utility model registration request] In the burner pot 1, an electric ignition heater 2 is provided, and fuel is supplied to the burner pot 1 and air is blown to the pot burner 1 after waiting for the heater 2 or the temperature of the burner pot 1 to rise by the heater 2. , the heater 2 is supported by a thermally conductive holder 3 having tongues 3a that abut against the outer wall of the burner pot 1, the temperature detector 4 is supported by the holder 3, and one of the ventilation passages 5 is A pot burner comprising an air outlet 6 for blowing part of the air onto the holder 3 or the temperature sensor 4.