JPH1122962A - Combustion heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of the rapid change of a heating feeling and abnormal combustion when a room temperature set value is decreased. SOLUTION: In this device, when a stable state is produced at strong combustion, a room temperature setting means is operated. When a set temperature forming an aim is lowered, energization of a heater 5 is stopped and the temperature of a vaporizer 4 is gradually lowered. The temperature of the vaporizer is detected a vaporizer temperature detecting means 6, and a control means controls the pop pulse time and the pump pulse period of a fuel feed device 3 so that an amount of fuel responding to a decreasing vaporizer temperature is supplied to the vaporizer. Further, a fan motor 10 is controlled so that an amount of air corresponding to an amount of fuel is generated, The control means confirms whether respective values attain a vaporizer temperature corresponding to a set combustion amount, a pump pulse, and a pump pulse period. When the values attain, control of lowering of a vaporizer temperature is stopped, a heater 5 is turned ON/OFF to maintain a given temperature, and this combustion state is held. This constitution prevents the occurrence of suspension of combustion and the rapid change of a heating feeling even when a room temperature set value is decreased, and beside prevents the occurrence of abnormal combustion, and continues comfortable operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion heating apparatus for burning liquid fuel.

[0002]

2. Description of the Related Art In a combustion heating apparatus using a liquid fuel such as kerosene, a liquid fuel stored in a fuel tank provided in or near the apparatus is pumped up by a pump and delivered to a vaporizer. The fuel heated and vaporized in the vaporizer is injected from a nozzle, supplied to a burner, and burns.

[0003] The vaporizer is controlled to a predetermined temperature by a heater. When the combustion amount is large, the vaporizer temperature is controlled to be high, and when the combustion amount is small, the vaporizer temperature is controlled to be low.

[0004] The capacity of a pump for supplying fuel to a carburetor is controlled by changing the time and cycle of energized pulses.

In general, the shorter the energizing pulse time and the longer the pulse period, the lower the fuel supply charge. For example, when decreasing from strong combustion to weak combustion, the energization pulse time for strong combustion is switched to the energization pulse time for weak combustion, and the pulse period for strong combustion is switched from the pulse period to the pulse period for weak combustion.

[0006]

For example, in the case of decreasing from strong combustion to weak combustion, the energization pulse time for strong combustion is switched to the energization pulse time for weak combustion, and the pulse period for strong combustion is changed to the pulse period for weak combustion. Although it is switched, it takes time until the temperature of the vaporizer drops to a temperature corresponding to the weak combustion even if the energization of the heater is stopped. The supply of fuel is immediately switched due to the switching of the energizing pulse time and pulse cycle of the pump, and the amount of combustion is reduced. Attempting to reduce the amount of fuel by reducing only the amount of supplied fuel while the temperature of the carburetor is high, the fuel sent to the carburetor is vaporized locally and rapidly, so that the sound of the vaporized gas is increased. However, there is a problem that the combustion becomes unstable, an odor due to incomplete combustion or the like is generated, and the user feels uncomfortable until the combustion is stabilized.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has provided a combustion heating apparatus having improved usability. A vaporizer for vaporizing a liquid fuel, and a fuel is supplied to the vaporizer. A fuel supply device, a heater for heating the vaporizer, vaporizer temperature detecting means for detecting the temperature of the vaporizer, a burner for burning a mixture of fuel gas and air vaporized by the vaporizer, and a heating standard. Room temperature setting means for setting the temperature, room temperature detecting means for detecting the room temperature, and a fan motor for blowing air for combustion to the burner portion and blowing air for releasing high-temperature combustion gas generated there to the heating space. And controlling the heater so that the temperature of the vaporizer becomes a value for realizing a combustion amount based on the set value of the room temperature setting means and the detection value of the room temperature detecting means. Means detection The fuel supply device and a fan motor configured with a control means for controlling without stopping the combustion heating system based on.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is as described above, and the temperature of the vaporizer is set to a value for realizing the combustion amount based on the set value of the room temperature setting means and the detection value of the room temperature detecting means. When the control means controls the heater, the room temperature setting means is operated and the reference temperature is lowered, the control means detects the decreasing carburetor temperature through the carburetor temperature detection means, and performs combustion. Without interrupting the operation, the fuel supply device 3 controls the pump pulse time and the pump pulse period, and supplies the burner with an amount of fuel corresponding to the detected value.

[0009] Thus, comfortable heating can be performed in a state where there is no fear of causing abnormal combustion while continuous operation is performed without interrupting heating.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.
1 is a main body of a combustion heating device, 2 is a fuel tank for storing liquid fuel, 3 is a fuel supply device whose discharge amount changes according to an applied pulse frequency, and 4 is this fuel supply device 3.
Vaporizer for heating and vaporizing the fuel delivered from the heater, 5 is a heater as a heating means for heating and controlling the vaporizer 4, 6 is a vaporizer temperature detecting means for detecting the temperature of the vaporizer, and 7 is this vaporizer. A nozzle 8 for ejecting the vaporized fuel gas is a burner for mixing the fuel gas ejected from the nozzle 7 with air and burning it.

Reference numeral 9 denotes a combustion box for discharging the combustion exhaust gas burned by the burner 7 from its opening.

Reference numeral 10 denotes a fan motor installed on the back of the heating device main body 1 for supplying combustion air to the burner 8 and blowing air for discharging combustion exhaust gas into the room. A louver for discharging the combustion exhaust gas into the room.

Reference numeral 12 denotes a control panel provided on the upper part of the front surface of the heater body 1.

Reference numeral 13 denotes a room temperature setting means provided on the control panel 12 for setting a reference temperature for heating a room or the like to be heated, 14 denotes room temperature detecting means for detecting the temperature of a room or the like to be heated, and 15 denotes the above-described room temperature. The control means controls the fuel supply device 3, the fan motor 10, and the heater 5 by setting the combustion amount based on signals from the room temperature setting means 13, the room temperature detecting means 14, and the vaporizer temperature detecting means 4.

Next, the operation of this embodiment having the above configuration will be described.

During combustion, the fuel supply device 3 is operated by a pulse output from the control circuit 15, and the fuel in the fuel tank 2 is supplied to the vaporizer 4, heated and vaporized by the heater 5, and ejected from the nozzle 7. The jet gas is mixed with air in the burner 8, ignited and burned. The combustion exhaust gas is discharged from an opening provided in the combustion box 9, mixed with air taken into the heater main body 1 by a fan motor 10 installed on the back of the heater main body 1, and formed as an appropriate temperature hot air. The air is sent out from the louver 11 on the front surface of the heater body 1 to heat a room or the like.

In the fuel supply device, the amount of fuel supply is controlled by the pulse frequency output from the control means 15, and the higher the frequency, the more fuel is supplied, and the supply of fuel is stopped by stopping the pulse.

Next, the operation at the time of combustion will be described with reference to the flowchart of FIG.

In step S1, when the combustion amount is stabilized by, for example, strong combustion based on signals from the room temperature setting means 13 and the room temperature detecting means 14, the room temperature setting means is operated. 15 determines the process of decreasing the combustion amount, executes the process of decreasing the combustion amount in step S2, stops the power supply to the heater 5, and decreases the temperature of the vaporizer 4 sequentially. In step S3, the temperature of the carburetor 1 that is decreasing is detected by the carburetor temperature detecting means 6, and the amount of fuel corresponding to the carburetor temperature that is decreasing is determined by the fuel supply device 3 by the pump pulse time and the pump pulse. The cycle is controlled and supplied to the burner 8. Further, an air amount corresponding to the amount of fuel is controlled and supplied to the fan motor 10. In step S4, it is checked whether the vaporizer temperature, the pump pulse, and the pump pulse cycle corresponding to the predetermined combustion amount have been reached.
5, the vaporizer temperature lowering control is stopped, and the heater 5 is turned ON / O.
The predetermined temperature is maintained by performing FF, and the combustion state is maintained.

As a result, even if the room temperature set value is lowered, the combustion is not interrupted, so that the feeling of heating does not change suddenly and the comfortable operation is continued without causing abnormal combustion.

[0022]

As described above, according to the combustion heating apparatus of the present invention,
When controlling the amount of combustion to be reduced, it is possible to prevent a sudden change in the feeling of heating by continuing to supply an amount of fuel corresponding to the temperature of the carburetor without decreasing the combustion without interrupting the combustion. In addition, because it does not cause abnormal combustion, you can enjoy comfortable heating.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a combustion operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combustion heating apparatus main body 2 Fuel tank 3 Fuel supply device 4 Vaporizer 5 Heater 6 Vaporizer temperature detecting means 8 Burner 10 Fan motor 13 Room temperature setting means 14 Room temperature detecting means 15 Control means

Claims (1)

[Claims] 1. A vaporizer (4) for vaporizing a liquid fuel,
A fuel supply device (4) for supplying fuel to the vaporizer, a heater (5) for heating the vaporizer, vaporizer temperature detecting means (6) for detecting a temperature of the vaporizer, and a vaporizer. A burner (8) for burning a mixture of vaporized fuel gas and air, a room temperature setting means (13) for setting a reference temperature for heating, and a room temperature detecting means (14) for detecting a room temperature;
A fan motor (10) for blowing air for combustion to the burner portion and for blowing air for releasing high-temperature combustion gas generated therein to a heating space; and setting the temperature of the carburetor by the room temperature setting means. While controlling the heater to be a value for realizing a combustion amount based on the value detected by the room temperature detecting means, the fuel based on the detected value of the carburetor temperature detecting means during the room temperature lowering control. A combustion heating device comprising a supply device and control means (15) for controlling the fan motor without stopping.