JP2000304355A - Hot air heater - Google Patents

Abstract

(57) [Problem] To remove formaldehyde, volatile organic compounds and house dust from indoor air. A burner (16) for vaporizing and burning fuel.
To cover the burner 16 and raise the combustion gas outlet 17a upward.
A duct 19 forming a hot air path covering the combustion cylinder 17 and guiding the room air to the outlet 20;
A blower 18 is provided on the back of the main body 11 and configured by a propeller fan for sucking room air. A transition element such as chromium, molybdenum or the like is provided on the peripheral surface of the combustion cylinder 17 on the suction side of the swirling flow of the blown air sent from the blower 18. A plurality of rows of fin-shaped metal bodies 21 made of a material containing
And the fins 21 are radiated by the radiant heat from the openings 22.
Is heated to a temperature of at least 400 ° C. or more.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater for removing formaldehyde, volatile organic compounds and house dust from indoor air.

[0002]

2. Description of the Related Art Conventionally, as a method of purifying air while performing indoor heating, a dust purifier of a filter type or an electric dust collecting type is attached to a room air suction port of a heating device such as a fan heater. There is a method of reducing house dust in a room mainly composed of dust and dust, and it is necessary to add an air purifying function to a heating device.

[0003]

However, in the conventional configuration, an air purifier of a filter type or an electric dust collection type is attached to the indoor air suction port, so that dust or dust having a large particle diameter is used. However, it was difficult to sterilize suspended biological particles and to collect and decompose reducing gas having a small particle size such as formaldehyde and volatile organic compounds. Also, when trying to collect small suspended particles with a small particle diameter, it is necessary to make the filter diameter of the air purifier small, and in a configuration in which the indoor air is sucked together with the blowing fan of the heating device, The design had to be performed with a pressure loss at a level at which the efficiency and safety of the heater were not impaired, and the design difficulty of the filter or the blower fan was extremely high.

[0004] Further, in the case of heating by burning liquid fuel such as kerosene, odor due to hydrocarbon (HC) generated in the process of vaporizing and burning kerosene becomes a problem. It was also a major issue how to reduce a large amount of HC generated in an unstable combustion state.

[0005]

In order to solve the above-mentioned problems, the present invention provides a burner for vaporizing and burning fuel, a combustion cylinder covering the burner and having a combustion gas outlet above.
A duct that covers the combustion cylinder and forms a hot air path that guides room air to the outlet, and a blower that is provided on the back of the main body and that is configured by a propeller fan that sucks room air, includes a blown air blown from the blower. A plurality of fin-shaped metal bodies made of a material containing a transition element such as chromium and molybdenum are arranged in a plurality of rows on the peripheral surface of the combustion cylinder on the suction side, and openings are provided on the surface of the combustion cylinder near the fins. The fins are heated to a temperature of at least 400 ° C. by radiant heat from the part.

In the combustion cylinder, a plurality of fin-shaped metal bodies are arranged in the vicinity of the combustion gas outlet on the front side so as to follow the flow of the combustion gas, and an adsorbent such as sepiolite is provided on the surface of the metal body. It is baked and carries a catalyst such as platinum.

[0007] According to the above invention, the indoor air sucked from the back of the main body is caused to flow along the metal body heated to a predetermined temperature or higher by the combustion tube, so that the temperature is maintained without impairing the pressure loss in the hot air path. Air can be blown out, and the design of the blower fan satisfies the blowing capacity required for ordinary heating equipment.The design of the blower fan is easy, and the floating biological particles in the air flowing through the hot air path are removed. It can be sterilized by high temperature and can oxidize and decompose reducing gas having a small particle size such as formaldehyde and volatile organic compounds, thereby removing chemical substances harmful to the human body.

Further, the metal body is provided on the peripheral surface of the combustion cylinder on the suction side of the swirling flow of the blast air sent from the blower, and an opening is provided on the surface of the combustion cylinder near the metal body. Radiant heat from the combustion gas can be directly obtained without blowing out, so that the temperature of the metal body can be maintained at a predetermined temperature or higher without deteriorating the exhaust gas characteristics, and harmful to the human body by activating the oxidative decomposition action by the metal body It can remove various chemical substances.

Also, since a plurality of rows of fin-shaped metal bodies which are baked with an adsorbent such as sepiolite and support a catalyst such as platinum are arranged on the front surface of the combustion tube from which most of the combustion gas is discharged, Because the HC generated at the time of ignition is adsorbed and the adsorbed HC is oxidized and decomposed by heating the metal body after combustion to reduce the odor at the time of ignition, and the HC generated at the time of fire extinguishing is directly oxidized and decomposed by the high-temperature metal body In addition, the odor at the time of fire extinguishing can be reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot air heater according to a first aspect of the present invention includes a burner that vaporizes and burns fuel, a combustion cylinder that covers the burner and has a combustion gas outlet above, and a room air that covers the combustion cylinder. A duct that forms a hot air path that guides air to the outlet, and a blower that is provided on the back of the main body and that is configured by a propeller fan that sucks room air, and around the combustion cylinder on the suction side of the swirling flow of the blown air sent from the blower A plurality of rows of fin-shaped metal bodies made of a material containing a transition element such as chromium and molybdenum are arranged on the surface, and openings are provided on the surface of the combustion cylinder near the fins, and the fins are radiated by heat from the openings. Is heated to a temperature of at least 400 ° C. or more.

Since the room air sucked from the back of the main body is caused to flow along the metal body heated to a predetermined temperature or higher by the combustion tube, the blowout of the hot air can be performed without impairing the pressure loss in the hot air path. It is possible to design a blower fan that satisfies the blowing capacity required for ordinary heating equipment, and it is possible to easily design the blower fan and sterilize floating biological particles in the air flowing through the hot air path with high temperature, Furthermore, reducing gas having a small particle size such as formaldehyde and volatile organic compounds can be oxidatively decomposed, and chemical substances harmful to the human body can be removed.

Further, the metal body is provided on the peripheral surface of the combustion cylinder on the suction side of the swirling flow of the blast air sent from the blower, and an opening is provided on the surface of the combustion cylinder near the metal body, so that the combustion gas is discharged from the opening. Radiant heat from the combustion gas can be directly obtained without blowing out, so that the temperature of the metal body can be maintained at a predetermined temperature or higher without deteriorating the exhaust gas characteristics, and harmful to the human body by activating the oxidative decomposition action by the metal body It can remove various chemical substances.

According to a second aspect of the present invention, in the hot air heater, the combustion cylinder is provided with a plurality of rows of fin-shaped metal bodies in the vicinity of the combustion gas outlet on the front side so as to follow the flow of the combustion gas. An adsorbent such as sepiolite is baked on the body surface,
In addition, a catalyst such as platinum is supported.

Since the adsorbent such as sepiolite is baked on the front of the combustion tube from which most of the combustion gas is discharged, and a plurality of fin-shaped metal bodies carrying a catalyst such as platinum are arranged in a plurality of rows, The oxidative decomposition of the catalyst makes it possible to more effectively oxidize and reduce reducing gas such as formaldehyde and volatile organic compounds with a small particle size.
Because the HC generated at the time of ignition is adsorbed and the adsorbed HC is oxidized and decomposed by heating the metal body after combustion to reduce the odor at the time of ignition, and the HC generated at the time of fire extinguishing is directly oxidized and decomposed by the high-temperature metal body In addition, the odor at the time of fire extinguishing can be reduced.

[0015]

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

(Embodiment 1) FIG. 1 is a configuration diagram of a hot air heater according to Embodiment 1 of the present invention, and FIG. 2 is a detailed view of a main portion of the same hot air heater. In FIG. 1, reference numeral 11 denotes a main body case, a tank 12 for holding liquid fuel on a lower side thereof, and a tank 12 for holding the liquid fuel.
A detachable cartridge tank 13 is provided at the upper part. Reference numeral 14 denotes a pump mounted on the upper surface of the tank 12, and an oil feed pipe 15 is led out from an upper end thereof to supply fuel to a combustion unit 16.

Reference numeral 17 denotes a combustion cylinder for guiding the combustion gas from the combustion section 16 upward. A blower 18 comprising a propeller fan for taking in and sending out indoor air is disposed at the back of the combustion cylinder. 1
Reference numeral 9 denotes a duct which mixes the combustion gas from the combustion cylinder 17 with the indoor air to generate warm air, and the indoor air sent from the blower 18 forms a swirling flow according to the blade shape of the propeller fan and the combustion unit 16. The flow is divided into two paths passing around the periphery of the combustion cylinder 17, and then the two are mixed to form warm air, which flows out of the warm air outlet 20 to warm the room with the warm air. And the combustion cylinder 17
Since the flow of the blown air on the peripheral surface of the combustion cylinder 17 is a swirling flow, the flow of air is different on each surface of the combustion cylinder 17. For example, the right side is the direction in which the blowing air flows in, and the left side is the direction in which it flows out.

Next, the detailed configuration and operation of the above-described hot air blowing path will be described with reference to FIG.

In FIG. 2, reference numeral 21 denotes a metal body disposed on the side surface of the combustion tube 17 on the side where the blown air flows, and these are formed of a plurality of fins so as to follow the flow of the blown air taken in from the room by the blower 18. The hot air is supplied to the metal body 21 without impairing the pressure loss of the hot air path.
So that it can be contacted efficiently. An opening 22 is provided on the surface of the combustion cylinder 17 near the metal body 21. And it is installed in the combustion cylinder 17 which becomes high temperature by the heat from the combustion part 16, and the high temperature of at least 400 ° C. or more is maintained by directing the radiant heat of the combustion gas from the opening 22 directly to the metal body 21. It becomes possible. Since the opening 22 provided on the surface of the combustion cylinder 17 is on the side where the blowing air supplied from the blower 18 flows in, the combustion gas does not blow out from the opening 22 and the problem of deteriorating exhaust gas characteristics also occurs. Only radiant heat can be given to the metal body 21 without doing so.

Then, the blower 1
By contacting the flow of the blast air taken in from the room by 8, it is possible to efficiently thermally decompose formaldehyde, volatile organic compounds, house dust, and the like contained in the blast air.

As described above, at least 4
By disposing a metal body 21 capable of maintaining a high temperature of 00 ° C. or more and efficiently contacting it with blast air, formaldehyde and volatile organic compounds, house dust, etc. contained in the blast air which could not be decomposed until then. Can be thermally decomposed efficiently, and a warm air heater can be provided in consideration of the indoor environment. Further, since heat exchange with warm air is performed via the metal body 21, improvement in thermal efficiency also contributes.

In this embodiment, the metal body 21 is the combustion cylinder 1
Although it is arranged on the front and right side surfaces of 7, it is not limited to this, and it is provided at an optimum position according to the flow of combustion gas and blown air.

Further, as shown in FIG. 3, a fin-shaped metal in which an adsorbent such as sepiolite is baked and a catalyst such as platinum or palladium is carried on the front surface of the combustion tube 17 from which most of the combustion gas flows. The bodies 23 are arranged in a plurality of rows. Then, formaldehyde and volatile organic compounds can be oxidatively decomposed at a lower temperature.
The heating device of the third embodiment does not require a complicated structure, and can be arranged in a wide range, and by ensuring a larger contact area with the blown air, the decomposition performance is dramatically improved.

Further, since a heat-resistant adsorbent such as sepiolite is baked and a catalyst is supported on the adsorbent, HC generated in a low temperature state at the time of ignition is adsorbed by the metal body 23 and heated after combustion. The adsorbed HC can be oxidized and decomposed by the catalyst, and the odor at the time of ignition can be reduced.

Further, since HC at the time of fire extinguishing can be directly oxidatively decomposed by a catalyst heated to a high temperature, the fire extinguishing odor can be greatly reduced.

[0026]

As described above, according to the warm air heater of the first aspect, the room air sucked from the back of the main body is caused to flow along the metal body heated to a predetermined temperature or higher by the combustion tube. Therefore, hot air can be blown without impairing the pressure loss of the hot air path, and the design of the blower fan may be sufficient to satisfy the blowing capacity required for ordinary heating equipment.
In addition to being able to easily design the blower fan, it can sterilize high-temperature suspended biological particles in the air flowing through the hot air path, and can oxidize and decompose reducing gas such as formaldehyde and volatile organic compounds with a small particle diameter. It can remove chemicals harmful to the human body.

Further, the metal body is provided on the peripheral surface of the combustion cylinder on the suction side of the swirling flow of the blast air sent from the blower, and an opening is provided on the surface of the combustion cylinder near the metal body. Radiant heat from the combustion gas can be directly obtained without blowing out, so that the temperature of the metal body can be maintained at a predetermined temperature or higher without deteriorating the exhaust gas characteristics, and harmful to the human body by activating the oxidative decomposition action by the metal body It can remove various chemical substances.

According to the second aspect of the present invention, there is provided a fin-shaped heater in which an adsorbent such as sepiolite is baked in front of a combustion tube from which most of the combustion gas is discharged, and a catalyst such as platinum is supported. Since the metal bodies are arranged in multiple rows, it is possible to more effectively oxidize and decompose reducing gas such as formaldehyde and volatile organic compounds with a small particle diameter by the oxidative decomposition action of the catalyst, and it is generated at the time of ignition The adsorbed HC is adsorbed, and the adsorbed HC is oxidized and decomposed by heating the metal body after combustion to reduce the odor at the time of ignition. The HC generated at the time of fire extinguishing is directly oxidized and decomposed by the high-temperature metal body. Odor can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot air heater in one embodiment of the present invention.

FIG. 2 is a detailed detailed view of the air flow path of the hot air heater.

FIG. 3 is a detailed view of a combustion tube of the hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Main body 16 Burning part 17 Burning cylinder 18 Ventilation fan 19 Duct 22 Opening 21, 23 Metal body

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Shigeru Murakami 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Industrial Co., Ltd. BA25X BA26X BA27Y BA30X BA31X BA32Y BA33Y BA41X BB04 BB05 CC36 CC39 CC53 DA03 DA13 EA04

Claims (2)

[Claims] 1. A burner for burning fuel, a combustion tube covering the burner and having a combustion gas outlet above, a duct forming a hot air path covering the combustion tube and guiding room air to an outlet. A blower configured with a propeller fan provided on the back side and sucking room air is provided, and a circumferential surface of a combustion cylinder on a suction side of a swirling flow of blown air sent from the blower is formed of a material containing a transition element such as chromium and molybdenum. Hot air in which a plurality of fin-shaped metal bodies are arranged, an opening is provided in the surface of the combustion cylinder near the fin, and the fin is heated to at least 400 ° C. or more by radiant heat from the opening. heater. 2. The combustion cylinder has a plurality of fin-shaped metal members arranged in the vicinity of a combustion gas outlet on the front side so as to follow the flow of the combustion gas, and an adsorbent such as sepiolite is provided on the surface of the metal member. The hot air heater according to claim 1, wherein the heater is baked and carries a catalyst such as platinum.