JP2003194411A - Heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cordless heating device using batteries, having a reduced weight and improved safety by increasing the life of the batteries by cooling them and reducing the number of the batteries. <P>SOLUTION: The heating device comprises a burner part 19 having a heater 18 for heating a carbureter 17, blowing means 25, the batteries 26, a battery cooling air passage 37 for guiding air from the blowing mean 25 to the batteries, and a DC power supply 27. During the energization of the heater 18, the burning of the burner 19 or the charge of the batteries 26 with the DC power supply 27, the temperature of the batteries 26 rises, but the air cools the batteries 26 with the drive of the blowing means 25 and is exhausted via a vent hole 32 communicating a battery chamber 31 with an exterior of a body to the exterior of the body, thus preventing the deterioration of the batteries. Even when the batteries are put into abnormal conditions to cause the generation of flammable gas, an interior of the body is ventilated to secure safe operation. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device using combustion heat, and more particularly to a forced convection type heating device having a blowing means for vaporizing and burning fuel.

[0002]

2. Description of the Related Art In a conventional air conditioner of this type, AC 100V is supplied from an indoor outlet for vaporization of fuel and driving of blowing means. In recent years, from the viewpoint of energy saving, individual heating for heating a necessary place when necessary has been reviewed. In particular, many users want to have local heating in the kitchen or dressing room for 30 minutes to 1 hour. These places are required to be small and easily portable. In addition, since the movement of people is also intense, driving with the power cord crawling on the floor causes a fall while walking. Moreover, these places are humid and there is a risk of electric leakage.

Therefore, as a heater without a power cord, a heater using a fuel cell as shown in Japanese Patent Laid-Open No. 6-196176, or an open heater 62-1717 shown in FIG.
A device using a thermoelectric element as disclosed in Japanese Patent No. 56 is disclosed. In this heating device, the fuel supplied from the fuel tank 3 is supplied to the fuel combustion ring burner 1 whose flow rate is controlled by the adjusting valve 2. Combustion gas is hot air flow path 4
And is mixed with the cold air that has passed through the cold air flow path 5 at the upper part of the apparatus, and is discharged from the air outlet 6 as warm air. A hot junction of the thermoelectric element 7 is arranged in the hot air flow passage, and a cold junction 9 is also arranged in the cold air flow passage 8. Electromotive force generated at the hot junction and the cold junction is taken out of the flow passage by a lead wire. Voltage regulator 1
1, the voltage is controlled and consumed by the DC motor as drive energy for the blowing means. Further, by installing the battery 10 in the conductive circuit, the surplus electric energy is stored in the battery, and the electric motor 12 is used at the initial stage of using the heating device.
It was configured to be used as the initial drive of.

[0004]

However, a heating device using a fuel cell requires a large capacity battery for backup at the time of starting operation, and the weight of the stack of the fuel cell and the like is required. Portability is an issue. Further, in the above-described conventional heating device using the thermoelectric generator, the amount of power generated by the thermoelectric generator is about 10 mV and 5 mA. However, when it is attempted to obtain enough power to drive the blower fan, many thermoelectric elements are used. However, the device is expensive and large in size, which is not practical for general household use.

In order to solve the above problems, the present invention reduces the number of batteries used in a cordless forced convection heater by extending the life of the batteries, reduces the weight of the main unit and is portable, and the batteries are in an abnormal state. The purpose is to realize a heater that can be operated safely even if a flammable gas is generated.

[0006]

In order to solve the above-mentioned conventional problems, in the heating device of the present invention, the battery is arranged below the heater which becomes high temperature, and the air is blown to the battery by the air blower so that the main body is blown from the vent hole. By exhausting outside, when using the battery,
By preventing the temperature rise of the battery during charging and extending the battery life, it is possible to provide a heating device that reduces the required capacity of the battery, reduces the number of batteries used, and has a light body weight and portability. .

When a high-capacity nickel hydrogen battery is used as the battery, hydrogen may occasionally be generated from the battery when the Nicad battery is overcharged during overcharge and overdischarge. Ventilation holes are provided in the battery chamber to exhaust air to the outside of the main unit, preventing hydrogen from filling the inside of the main unit and realizing a heater that can be operated safely even if the battery becomes abnormal and flammable gas is generated. can do.

[0008]

A heating apparatus according to claim 1 of the present invention is driven by a main body, a Bunsen type combustion burner having a vaporizer for vaporizing fuel and a heater for heating the vaporizer, and a DC motor. It is composed of a blowing means and a battery such as a nickel-cadmium battery or a nickel-hydrogen battery, and the battery is installed below the heater. In the above structure, prior to combustion, the heater is energized to preheat the vaporizer to about 270 ° C., then the fuel is supplied to the vaporizer and the blowing means is driven to start combustion. The Bunsen burner is a structure that entrains air and creates a mixture when vaporized fuel is ejected.
During preheating, high temperature air flows to the upper part of the burner by natural convection and heats the upper part from the carburetor inside the main body, but since the battery is installed below the heater, the temperature rise of the battery is prevented and the battery life is shortened. Is less likely to deteriorate.

A heating device according to claim 2 of the present invention includes a main body, a burner having a vaporizer for vaporizing fuel and a heater for heating the vaporizer, a blower means driven by a DC motor, a nicad battery and nickel. A battery such as a hydrogen battery, a battery chamber for accommodating the battery, a vent provided at an upper portion of the battery chamber for communicating the battery chamber with the outside of the main body, and a DC power source are provided. In the above configuration, the battery is charged by the DC power source, but the temperature of the battery may rise during charging. However, heat dissipation is promoted by the vent hole that connects the battery chamber and the outside of the main body, and deterioration of the battery is prevented and deterioration of battery life is reduced. When a high-capacity nickel metal hydride battery is used as the battery, hydrogen may be rarely generated from the battery when the Nicad battery is overcharged during overcharge and overdischarge. A ventilation system is provided in the upper part of the battery chamber to exhaust the air to the outside of the main unit, preventing the interior of the main unit from being filled with hydrogen and enabling a safe operation even if the battery becomes abnormal and flammable gas is generated. Can be realized.

According to a third aspect of the present invention, there is provided a heating device including a main body, a metal mounting table on which the main body is mounted, a vaporizer for vaporizing fuel, a burner having a heater for heating the vaporizer, and a DC motor. It consists of a blower driven by a battery, a battery such as a nickel-cadmium battery or a nickel-hydrogen battery, a battery chamber for accommodating the battery, and a DC power source, and a metal heat-conducting member so that the battery chamber and the stand have a heat transfer relationship. It has a fixed configuration. In the above configuration, the battery is charged by the DC power source, but the temperature of the battery may rise during charging. However, since heat is conducted from the battery chamber to the metal mounting table and radiated from the mounting table, deterioration of the battery is prevented.

According to a fourth aspect of the present invention, there is provided a heating device, a main body, a vaporizer for vaporizing fuel, a burner having a heater for heating the vaporizer, a blowing means driven by a DC motor, a nicad battery, A battery such as a nickel-hydrogen battery, a battery chamber for accommodating the battery, a ventilation hole provided at the upper part of the battery chamber that communicates the battery chamber with the outside of the main body, a battery cooling air duct that guides wind from the air blower to the battery chamber, and a direct current It is composed of a power supply. In the above configuration, the battery is charged by the DC power source, but the temperature of the battery may rise during charging.
However, since the battery is cooled by the air from the air blower and is exhausted to the outside of the main body by the vent hole that communicates the battery chamber with the outside of the main body, deterioration of the battery is prevented. In addition, when a high-capacity nickel hydrogen battery is used as the battery, hydrogen may occasionally be generated from the battery when the Nicad battery is overcharged during overcharge and overdischarge. However, due to the structure in which air is blown from the ventilation means and exhausted to the outside of the main body from the ventilation port, it is possible to prevent the inside of the main body from being filled with hydrogen and to operate safely even if the battery becomes abnormal and flammable gas is generated. A heater can be realized.

According to a fifth aspect of the present invention, in the heating device according to the fourth aspect, the blowing means is driven while the heater is energized. Prior to combustion, the heater is energized to preheat the carburetor to about 270 ° C., then fuel is supplied to the carburetor and the blowing means is driven to start combustion. During the preheating, for example, the blowing unit is intermittently operated to blow air to the battery, thereby suppressing the temperature rise of the battery and preventing the deterioration of the battery.

According to a sixth aspect of the present invention, in the heating apparatus according to the fourth aspect, the air blowing means is driven before combustion. In the above configuration, the battery is charged by a DC power supply, but when a high-capacity nickel hydrogen battery is used for the battery, it is overcharged and overdischarged, and when a Nicad battery is used, overcharged. It may occur.

After the completion of charging, before the ignition of the burner, the air blower is driven to exhaust the air in the battery chamber from the vent to the outside of the main body, so that hydrogen is ventilated inside the main body before ignition.
Abnormal combustion can be prevented.

According to a seventh aspect of the present invention, in the heating device according to the fourth aspect, the blowing means is driven while the DC power source is driven to charge the battery. In the above structure, the temperature of the battery rises during charging. However, by intermittently operating the blowing means, the battery is cooled by the wind and is exhausted to the outside of the main body by the ventilation hole that communicates the battery chamber with the outside of the main body, so that the deterioration of the battery is prevented. Further, even if flammable gas is generated by overcharging, it is exhausted to the outside of the main body through the exhaust port, so that it is possible to realize a heater that can be operated safely.

A heating device according to an eighth aspect of the present invention is, in addition to the structure of the fourth aspect, provided with a temperature detecting means for detecting the temperature of the battery and driving the DC power supply to charge the battery, and detecting the temperature detecting means. When the temperature reaches or exceeds the set value, the blowing means is driven. In the above configuration, the battery is charged by the DC power source, but when the control based on the charging time or the control based on -ΔV detection is performed to detect the end of charging, the temperature of the battery rises at the end of charging. However, since the battery is cooled by detecting the temperature rise and driving the air blower, deterioration of the battery is prevented.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a heating apparatus according to Embodiment 1 of the present invention. In FIG. 1, the main body 15 has a vaporizer 17 made of brass or the like having a vaporization element 16 such as a metal fiber or an inorganic porous body for vaporizing fuel and a heater 18 such as a sheath heater for heating the vaporizer, A Bunsen burner 19 that ejects vaporized fuel from a nozzle to entrain air to form an air-fuel mixture, a heat insulating material 20 such as ceramic fiber that insulates the vaporizer, and sparks generated by high voltage to ignite the vaporized fuel Ignition means 21 for causing, a fuel tank 22, a fuel pump 23 for sending fuel to a carburetor, a blowing means 25 such as a fan driven by a DC motor 24, and a charge release device installed below the heater 18. A battery 26 that is a combination of a plurality of secondary batteries such as Ni-Cd batteries and nickel-hydrogen batteries, a DC power supply 27 that transforms and rectifies 100 V AC, and a DC power supply. The current generated by 7 cell 26 or the heater 18, the DC motor 2
4, a fuel pump 23, a direct current control means 28 such as a relay for controlling power supply to the ignition means 21, a heater 18,
The DC motor 24, the fuel pump 23, the ignition means 21, and the current control means 28 are controlled by a microcomputer 29.

In the Bunsen type burner having the above construction, it is necessary to preheat the vaporizer temperature to 270 ° C. or higher required for vaporizing kerosene prior to ignition. When performing cordless operation, power the heater 60 times prior to ignition.
Input 0 W and raise the temperature of the vaporizer until it reaches a predetermined temperature T = 270 ° C. (about 150 seconds).

Next, the fuel pump 23 is supplied with electric current from the battery 26.
Is driven to supply fuel to a carburetor at 270 ° C. or higher and vaporized, and then the burner is ignited by the ignition means 21, and the DC motor is driven to blow warm air into the room for heating.

During preheating, high-temperature air flows to the upper part of the burner 19 by natural convection, and the vaporizer 16 in the main body 15 is heated.
Although the upper part is heated, since the battery 26 is installed below the heater 18, the temperature rise of the battery 26 is prevented and the deterioration of the battery life is reduced. Therefore, it is possible to provide a heating device in which the required capacity of the battery is reduced, the number of batteries used is reduced, and the weight of the main body is light and portable.

(Embodiment 2) FIG. 2 is a sectional view of a heating device according to Embodiment 2 of the present invention.

In FIG. 2, the same numbers as those in the first embodiment have the same functions. Reference numeral 31 is a metal battery chamber for accommodating batteries, and a ventilation port 32 is provided in the upper portion of the battery chamber 31.
By this, the battery chamber 31 and the outside of the main body 15 are ventilated.

In the above structure, the battery 26 is charged by the DC power source, but the temperature of the battery 26 may rise during charging. However, the ventilation hole 32 communicating between the battery chamber 31 and the outside of the main body radiates and radiates heat, so that deterioration of the battery is reduced.

When a high-capacity nickel-hydrogen battery is used as the battery 26, hydrogen may occasionally be generated from the battery when the Nicad battery is overcharged during overcharge and overdischarge. Although hydrogen collects in the upper part of the battery chamber 31, the ventilation hole 32 is provided in the upper part to exhaust the hydrogen to the outside of the main body, so that the inside of the main body is prevented from being filled with hydrogen, the battery 26 becomes in an abnormal state, and flammable gas is generated. However, it is possible to realize a heater that can be operated safely.

(Embodiment 3) FIG. 3 is a sectional view of a heating apparatus according to Embodiment 2 of the present invention, and FIGS. 4 and 5 are perspective views of a battery chamber. Those having the same numbers as those in the second embodiment perform similar functions.

In the figure, the main body 15 is provided with a metal base 34 for mounting the main body 15 to prevent the main body 15 from tipping over and preventing oil leakage, and the battery chamber 31 and the base 34 have a heat transfer relationship. A metal mounting member 35 as shown in FIG.
It is fixed by a heat conduction member 33 consisting of.

In the above structure, the battery 26 is a DC power source 27.
However, the temperature of the battery 26 may rise during charging. However, heat is conducted from the battery chamber 31 to the metal mounting table 34 and is radiated from the mounting table, so that deterioration of the battery is prevented.

The same effect can be obtained by using a cushioning material 36 such as silicon resin having a high heat conductivity as the heat conducting member 33.

(Embodiment 4) FIG. 6 is a sectional view of a heating apparatus according to Embodiment 4 of the present invention. In FIG. 6, the same numbers as those in the second embodiment perform the same functions. In the figure, 37 is a battery cooling air passage for guiding the air from the air blowing means 25 to the battery 26.

In the above structure, the heater 18 is energized,
During burning of the burner 19, while the battery 26 is being charged by the DC power source, the temperature of the battery 26 rises. However, the air blower 25
Is driven, the battery 26 is cooled by the wind and is exhausted to the outside of the main body by the vent 32 that communicates the battery chamber 31 with the outside of the main body. Therefore, the deterioration of the battery 26 is prevented. Further, even if the battery 26 becomes in an abnormal state and flammable gas is generated, the inside of the main body is ventilated, so that safe operation can be performed.

(Embodiment 5) FIG. 6 is a sectional view of a heating apparatus according to Embodiment 5 of the present invention, and FIG. 7 is a time chart of a heater driving state, a blowing means and a burner operating state.

In FIG. 6, the same numbers as those in the fourth embodiment have the same functions. Further, while the microcomputer 29 is energizing the heater, it is configured to issue an instruction to drive the blower unit 25 intermittently. With the above configuration,
As shown in FIG. 7, prior to combustion, the heater 18 is energized to preheat the carburetor 17 to about 270 ° C., then fuel is supplied to the carburetor 17, and the blowing means 25 is driven to start combustion. During the preheating, the blowing means 25 is intermittently operated to blow air to the battery 26, so that the temperature rise of the battery 26 is suppressed and the deterioration of the battery 26 is prevented.

(Sixth Embodiment) FIG. 6 is a sectional view of a heating apparatus according to a sixth embodiment of the present invention, and FIG. 8 is a time chart of a burner operating state and a blower driving state.

In FIG. 6, the same numbers as those in the fourth embodiment have the same functions. Further, the microcomputer 29 is configured to drive the blowing means prior to ignition. In the above configuration, the battery 26 is charged by the DC power supply 27, but when a high-capacity nickel hydrogen battery is used for the battery 26, it is rarely overcharged and overdischarged, and when a Nicad battery is used, overcharged. May generate hydrogen.

After the charging is completed and before the burner 19 is ignited, the air blowing means 25 is driven so that the air in the battery chamber 31 is ventilated.
With the configuration in which the air is exhausted from 2 to the outside of the main body, hydrogen is ventilated inside the main body before ignition, and abnormal combustion can be prevented.

(Embodiment 7) FIG. 6 is a sectional view of a heating apparatus according to Embodiment 7 of the present invention, and FIG. 9 is a time chart of a DC power supply drive state, a battery temperature and a blower drive state.

In FIG. 6, the same numbers as those in the fourth embodiment have the same functions. Further, when the microcomputer 29 drives the DC power supply 27 to charge the battery 26, the blowing means 25 is driven intermittently. As shown in FIG. 9, during charging in the above configuration,
The temperature of the battery 26 rises. However, by intermittently operating the blower means 25, the battery 26 is cooled by the wind and is exhausted to the outside of the main body by the ventilation hole 32 that communicates the battery chamber 31 with the outside of the main body, so that the deterioration of the battery 26 is prevented. . Further, even if flammable gas is generated by overcharging, it is exhausted to the outside of the main body through the exhaust port, so that it is possible to realize a heater that can be operated safely.

(Embodiment 8) FIG. 10 is a sectional view of a heating apparatus according to Embodiment 8 of the present invention, and FIG. 11 is a time chart of a DC power supply driving state, a battery temperature and a blowing means driving state.

In FIG. 7, the same numbers as those in the fourth embodiment have the same functions. Further, when the temperature detecting means 38 for detecting the temperature of the battery 26 is provided and the DC power supply 27 is driven to charge the microcomputer 29 battery,
When the temperature detected by the temperature detecting means exceeds a set value, the blowing means 25 is driven. In the above configuration, the battery is charged by the DC power supply 26, but when the control based on the charging time or the control based on -ΔV detection is performed as the detection of the end of charging, the temperature of the battery rises at the end of charging as shown in FIG. Yes (point A). However, when the temperature rise is detected and becomes equal to or higher than the set value T1, the blower means 25 is driven to set the value
The battery 26 is cooled by stopping when it becomes 2 or less, so that deterioration of the battery is prevented.

[0041]

As described above, according to the present invention, since the battery is installed below the heater and the DC power supply is provided, the temperature rise of the battery is prevented and the battery life is extended, so that the required capacity of the battery is reduced. Reduce the number of batteries used,
It is possible to provide a heating device that is lightweight and cordless and is portable.

[Brief description of drawings]

FIG. 1 is a sectional view of a heating device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a heating device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a heating device according to a third embodiment of the present invention.

FIG. 4 is a perspective view of a battery chamber in the third embodiment.

FIG. 5 is a perspective view of a battery chamber in the third embodiment.

FIG. 6 is a cross-sectional view of a heating device according to Examples 4 to 7 of the present invention.

FIG. 7 is a time chart of a heater driving state, a blowing unit, and a burner operating state according to the fifth embodiment of the present invention.

FIG. 8 is a time chart of a burner operating state and a blower driving state according to the sixth embodiment of the present invention.

FIG. 9 is a time chart of a DC power supply driving state, a battery temperature, and a blowing unit driving state according to a seventh embodiment of the present invention.

FIG. 10 is a sectional view of a heating device according to an eighth embodiment of the present invention.

FIG. 11 is a time chart of a DC power supply driving state, a battery temperature, and a blowing unit driving state.

FIG. 12 is a sectional view of a conventional heating device.

[Explanation of symbols]

15 body 17 Vaporizer 18 heater 19 burners 24 DC motor 25 Blower means 26 batteries 27 DC power supply 31 Battery room 32 Vent 33 heat conduction member 34 Stand 37 Battery cooling air duct 38 Temperature detection means

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Claims (8)

[Claims] 1. A main body, a burner having a vaporizer for vaporizing fuel and a heater for heating the vaporizer, a blowing means driven by a DC motor, and a battery, the battery being installed below the heater. A heating device characterized by being. 2. A main body, a burner having a vaporizer for vaporizing fuel and a heater for heating the vaporizer, a blowing means driven by a DC motor, a battery, a battery chamber for accommodating the battery, and a battery chamber. A heating device consisting of a DC power supply and a ventilation port that communicates with the outside of the main unit. 3. A main body, a mounting table for mounting the main body, a burner having a vaporizer for vaporizing fuel and a heater for heating the vaporizer, a blower means driven by a DC motor, a battery, and a battery. A heating device that includes a battery compartment, a heat conducting member that connects the battery compartment and the stand, and a DC power supply. 4. A main body, a burner having a vaporizer for vaporizing fuel and a heater for heating the vaporizer, a blowing means driven by a DC motor, a battery, a battery chamber for accommodating the battery, and a battery chamber. And a ventilation hole that communicates with the outside of the main body, a battery cooling air passage that guides wind from the air blower to the battery chamber, and a DC power supply. 5. The heating device according to claim 4, wherein the blower means is driven while the heater is energized. 6. The heating device according to claim 4, wherein the air blower is driven before combustion. 7. The heating device according to claim 4, wherein the blower is driven while the DC power source is driven to charge the battery. 8. The heating device according to claim 4, further comprising temperature detecting means for detecting the temperature of the battery, and driving the blower means when the temperature detected by the temperature detecting means exceeds a preset value while the DC power source is driven to charge the battery. apparatus.