JP3727189B2 - Pot stove - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a pot-type stove that warms the interior of a red hot body heated to a high temperature by a combustion flame of a pot burner, and the energy of the heat radiation is propagated into the room through the glass part of the combustion chamber. About.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a pot-type stove including a pot burner, a red hot body provided apart from the pot burner, and a combustion chamber provided with a glass portion on the side of the red hot body is known. According to this pot type stove, the red hot body heated to a high temperature by the combustion flame of the pot burner radiates heat, and the energy of the heat radiation is propagated through the glass portion into the room, thereby warming the room.
[0003]
In such a pot-type stove, the fuel may burn incompletely to generate a large amount of soot, which may adhere to the inner peripheral surface of the glass portion of the combustion chamber. This soot is particularly likely to occur in large quantities when the pot burner is ignited and extinguished. If this state is left as it is, the radiant heat from the red hot body is blocked by the soot adhering to the glass portion and the room is not effectively warmed, which is not preferable from the viewpoint of energy efficiency. In addition, the glass part with soot attached is not aesthetically pleasing, and it becomes difficult to see the combustion chamber through the glass part. For example, it is not possible to confirm whether a combustion flame is generated from the pot burner, and is unnecessary for the user. There is a risk of worrying. From the above, it is necessary to remove the soot adhering to the glass part.
[0004]
By the way, a pot type stove is generally provided with a room temperature sensor, and the amount of fuel burned in the pot burner is controlled based on the temperature detected by the room temperature sensor (hereinafter referred to as “sensor temperature”). Specifically, when the room is warm and the sensor temperature is high, the fuel combustion amount is reduced, and conversely, when the sensor temperature is low, the fuel combustion amount is increased. In the past, while the amount of combustion was increased, soot adhered to the glass portion was oxidized and removed by radiant heat from the red hot body and heat transferred from the combustion flame. In addition, soot is also attached to the red hot body, but this soot is oxidized and removed by directly heating the red hot body by the combustion flame.
[0005]
However, due to recent changes in building conditions, in many homes, the air tightness of the room is higher than before, and when a pot-type stove is used in such a room, the room is warmed up in a short time and the room temperature has remained for a while. Does not drop during. For this reason, since the time when the sensor temperature is low, that is, the time when the amount of fuel combustion is increased is short, soot adhering to the glass portion may not be sufficiently removed.
[0006]
Therefore, a pot type stove configured to oxidize and remove the soot adhering to the glass portion by forcibly increasing the amount of fuel combustion for a certain time (for example, 10 minutes) after the ignition of the pot burner is used. Yes. However, if the amount of fuel burned in the pot burner is forcibly increased regardless of the sensor temperature for a certain period of time after ignition to remove soot, the room will be overheated, causing discomfort to those in the room. There is a fear. Moreover, more fuel than necessary is consumed, which is not preferable from the viewpoint of energy efficiency. In order to reduce unnecessary consumption of fuel, it is also possible to forcibly increase the amount of fuel combustion for a certain period of time after ignition of the pot burner at a rate of once every few times instead of once. It is done. However, it is impossible to completely avoid the situation where the room is excessively heated as described above.
[0007]
[Problems to be solved by the invention]
In view of such a background, an object of the present invention is to provide a pot-type stove that can prevent soot from adhering to a glass part without consuming wasteful energy while appropriately maintaining room temperature. .
[0008]
[Means for Solving the Problems]
The pot-type stove of the present invention for solving the above problems comprises a pot burner, a red hot body provided away from the pot burner, and a combustion chamber provided with a glass portion on the side of the red hot body. In the pot-type stove provided, a charging electrode is provided between the pot burner and the red hot body, the red hot body is electrically conductive and electrically insulated from the outside, and the charging electrode and the red hot body DC high voltage applying means for applying a DC high voltage is provided between the two.
[0009]
According to the pot type stove configured as described above, when soot is generated due to incomplete combustion of fuel by the pot burner, the soot is raised toward the red hot body by the hot air of the combustion flame. At this time, when a DC high voltage is applied between the charging electrode and the red hot body, the bag receives the electric charge from the charging electrode and is charged, and subsequently attracted to the red hot body having the opposite polarity to the charging electrode. Adhere to. Therefore, it is possible to prevent the wrinkles from adhering to the glass part. The soot adhering to the red hot body is oxidized and removed by the heat directly transmitted from the red hot body heated by the combustion flame of the pot burner. At this time, since it is not necessary to increase the combustion amount of the pot burner in order to remove the soot adhering to the glass part as in the conventional case, the room temperature can be appropriately maintained without excessively warming the room. Further, unnecessary fuel consumption can be suppressed and energy can be saved.
[0010]
In the pot stove, the pot burner may be used as the charging electrode. Accordingly, by using a conventional pot burner as the charging electrode without newly providing a charging electrode, it is possible to prevent the soot from adhering to the glass portion while keeping the cost low.
[0011]
In the pot-type stove, the high voltage applying means may apply a DC high voltage for a predetermined time when the pot burner is ignited and extinguished. Soot due to incomplete combustion of the fuel hardly occurs during combustion of the pot burner, and is particularly likely to be generated in large quantities during ignition and extinguishing. For this reason, when a pot burner is ignited and extinguished, it is possible to effectively prevent soot from adhering to the glass portion by applying a DC high voltage between the charging electrode and the red hot body for a predetermined time. In addition, it is preferable from the viewpoint of energy efficiency without extra power being consumed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the pot type stove of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory configuration diagram in which a part of the pot-type stove of the present embodiment is cut out, and FIG. 2 is an explanatory configuration diagram of a main part of the pot-type stove of the present embodiment.
[0013]
In the pot-type stove of this embodiment, as shown in FIG. 1, a substantially cylindrical combustion chamber 2 is formed in a substantially rectangular parallelepiped main body 1 opened forward. The lower side wall of the combustion chamber 2 is composed of a pot outer cylinder 3 having conductivity, and a pot burner (“charging electrode” of the present invention) 4 electrically connected to the pot outer cylinder 3 inside the pot outer cylinder 3. Is provided. The pot burner 4 has a configuration in which a combustion ring 6 is sunk with respect to the upper end of a substantially cylindrical pot inner cylinder 5 connected to the pot outer cylinder 3 at the upper part. An air hole 7 is opened in the pot inner cylinder 5. Above the pot burner 4, a substantially cylindrical red hot body 8 made of stainless steel is provided. The red hot body 8 is surrounded by a glass portion 9 made of cylindrical heat-resistant glass that forms the middle side wall of the combustion chamber 2. ing. The glass portion 9 is surrounded by the reflecting plate 10 over a substantially half circumference, and the radiant heat energy from the red hot body 8 is reflected to the front of the main body 1 by the reflecting plate 10. A front guard 11 is provided on the main body 1 to prevent the user's hand from touching the glass part 9 and the reflector 10 by mistake. A front panel of the main body 1 is provided with a display panel 12 that displays the combustion state of the pot burner 4 and an operation panel 13 that is operated by the user to change the fuel combustion amount of the pot burner 4. . A controller 14 for controlling the amount of fuel burned by the pot burner 4 is provided in the main body 1.
[0014]
FIG. 2 shows the main part of the pot-type stove of this embodiment. A metal plate 15 is provided over the upper end portion of the red hot body 8, and the metal plate 15 is attached to a U-shaped member 17 fixed to the upper portion of the combustion chamber 2 via an insulator 16. That is, the red hot body 8 is electrically insulated from the outside and fixed so as to hang from the U-shaped member 17 in the combustion chamber 2. Further, a DC high voltage application circuit (“DC high voltage application means” of the present invention) 18 for applying a DC high voltage is provided between the pot burner 4 and the red hot body 8. According to the DC high voltage application circuit 18, an AC voltage from the commercial AC power supply 19 is applied between the pot burner 4 and the red hot body 8 as a DC high voltage via the step-up transformer 20 and the bridge rectifier circuit 21. In addition, a switch 22 that is opened and closed by the controller 14 is provided, and the application of the DC high voltage is started or stopped according to the opening and closing of the switch 22.
[0015]
The function of the pot-type stove of this embodiment having the above-described configuration will be described. At the start of operation, first, fuel supplied from a fuel supply path (not shown) is ignited by an ignition heater (not shown). Then, combustion air is supplied from a combustion air supply means (not shown) through the air hole 7 of the pot inner cylinder 5, and the air hole 7 becomes a flame opening to generate a combustion flame. On the other hand, when the operation is stopped, the supply of fuel and combustion air is stopped and combustion of the pot burner 4 is stopped.
[0016]
When the pot burner 4 is ignited and extinguished, the controller 14 applies a DC high voltage (for example, 4 kV) between the red hot body 8 and the pot burner 4 for a predetermined time (for example, 3 minutes). As a result, the pot burner 4 including the pot inner cylinder 5 is negatively charged as a whole, and the red hot body 8 is positively charged. During this time, soot s generated by incomplete combustion of the pot burner 4 receives a negative charge from the pot inner cylinder 5 and is negatively charged, and then is attracted to and adhered to the red hot body 8. The soot s is oxidized and removed by the heat transferred from the red hot body 8 heated by the combustion of the pot burner 4 thereafter. At this time, since it is not necessary to forcibly increase the amount of combustion of the pot burner 4 in order to remove the soot adhering to the glass portion 9 as in the conventional case, the room temperature is appropriately maintained without excessively warming the room. can do. Further, unnecessary fuel consumption can be suppressed and energy can be saved.
[0017]
In the present embodiment, the entire pot burner 4 including the pot inner cylinder 5 is used as the charging electrode. However, as another embodiment, although not shown, the pot outer cylinder 3 and the red hot body 5 are not provided between the pot burner 4 and the red hot body 5. A charging electrode may be provided separately. For example, a charging electrode may be provided at a position corresponding to the combustion ring 6 of the pot burner 4. Thereby, the soot generated from the pot burner 4 hits the charging electrode while rising due to the hot air of the combustion flame, so that the soot is efficiently charged and reliably prevented from adhering to the glass portion 9 and removed. Can do.
[0018]
In the present embodiment, the soot removal is performed only when the pot burner 4 is ignited and extinguished. However, as another embodiment, soot removal may be performed constantly when the pot burner 4 is combusted. According to the pot-type stove of the embodiment, combustion of the pot burner 4 becomes unstable due to some cause during combustion, and even when soot is generated, soot is prevented from adhering to the glass part 9. Can be removed.
[0019]
In this embodiment, the red hot body 8 is positively charged and the pot burner 4 including the pot inner cylinder 5 is negatively charged. However, as another embodiment, the red hot body 8 is negatively charged. The pot burner 4 may be positively charged. In this case, since the soot receives a positive charge from the pot inner cylinder 5 and is positively charged, it is attracted to and attached to the red hot body 8, so that it is possible to reliably prevent the soot from adhering to the glass portion 9. it can.
[Brief description of the drawings]
FIG. 1 is an explanatory configuration diagram in which a part of a pot-type stove according to the present embodiment is cut away. FIG. 2 is an explanatory configuration diagram of the main part of the pot-type stove according to the present embodiment.
2 ... Combustion chamber, 4 ... Pot burner (charging electrode), 8 ... Red hot body, 9 ... Glass part, 18 ... DC high voltage application circuit (DC high voltage application means)

Claims (3)

A pot-type stove comprising a pot burner, a red hot body provided apart from the pot burner, and a combustion chamber provided with a glass portion on the side of the red hot body, the pot burner and the red hot body, A high-voltage DC applying means for applying a high DC voltage between the charging electrode and the red heat body, wherein the red heat body is electrically conductive and electrically insulated from the outside. Pot-type stove characterized by being provided with. 2. The pot stove according to claim 1, wherein the pot burner is used as the charging electrode. The pot-type stove according to claim 1 or 2, wherein the high-voltage applying means performs application with a DC high voltage for a predetermined time when the pot burner is ignited and extinguished.

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