JPH072805U - Incomplete combustion prevention device for semi-sealed oil stove - Google Patents

Abstract

(57) [Summary] [Object] To provide an incomplete combustion prevention device for a semi-hermetic oil stove capable of preventing exhaust gas and unburned gas from flowing out into the room. [Composition] A semi-hermetic oil stove that includes a burner 2 for burning fuel and a combustion chamber 6, takes in indoor air as combustion air, and discharges combustion gas to the outside, on the side opposite to the combustion chamber of the burner 2. An incomplete combustion prevention device for a semi-hermetic oil stove provided with a sensor 7 capable of detecting a flame 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing incomplete combustion of a so-called semi-sealed oil stove that takes in indoor air and discharges combustion gas to the outside.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, a semi-enclosed oil stove that has a burner for burning fuel and a combustion chamber, takes in indoor air as combustion air, and discharges combustion gas to the outside has been widely known.

By the way, in recent years, in order to improve the heating and cooling efficiency of houses, high heat insulation and high airtightness have been achieved. If a ventilation fan or the like is used in such an airtight room, the room may be in a negative pressure state relative to the outdoors (outdoors).

[0004]

[Problems to be solved by the device]

 If the above device is operated in a room where a negative pressure is applied to the outside (outdoors), intake of indoor air and exhaust of exhaust gas cannot be performed smoothly, and the normal combustion balance is broken. For this reason, a flame may be generated in the opposite direction to the normal direction, that is, a flame may be generated on the side opposite to the combustion chamber, causing incomplete combustion, and there is a risk that some of the exhaust gas and unburned gas may accidentally flow out into the room. .

In view of the above problems, the present invention is a so-called semi-hermetic type oil stove that takes in indoor air and discharges combustion gas to the outside, when a flame occurs on the side opposite to the combustion chamber. The purpose is to detect this promptly by an appropriate publicly known means and immediately stop the operation of the device to prevent exhaust gas and unburned gas from flowing out into the room.

[0006]

Means for Solving the Problems An incomplete combustion prevention device for a semi-enclosed petroleum stove according to the present invention, which is directed to this end, includes a burner for burning fuel and a combustion chamber, and takes in indoor air as combustion air. A semi-sealed petroleum stove that discharges combustion gas to the outside of the room is provided with a sensor capable of detecting a flame on the side of the burner that is opposite to the combustion chamber.

[0007]

[Action]

 In such an incomplete combustion prevention device for a semi-hermetic oil stove, a flame detection sensor capable of detecting a flame is provided on the side of the burner opposite to the combustion chamber. If the inside of the room has a negative pressure relative to the outside (outdoor) due to the use of a ventilation fan, etc., flames may be generated on the side of the burner opposite to the combustion chamber. In such a case, the flame is detected by a flame detection sensor provided on the side opposite to the combustion chamber. When a flame is detected, the operation of the device is immediately stopped based on a signal from the flame detection sensor through a control device or the like by an appropriate known method. Therefore, the exhaust gas and the unburned gas are prevented from flowing out into the room.

[0008]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an incomplete combustion prevention device for a semi-sealed oil stove according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a frame body of the stove body. A burner 2 for burning fuel is provided in the lower portion of the frame body 1. A fuel supply passage 3 for supplying fuel and an ignition heater 4 are provided on the upper side surface of the burner 2.

A fuel suction member 5 for sucking fuel from the bottom of the burner 2 is connected to the ignition heater 4, and the fuel suction member 5 is made of, for example, glass wool.

A combustion chamber 6 is provided above the burner 2. In the vicinity of the lower side surface of the burner 2, that is, on the side opposite to the combustion chamber, an optical sensor, more specifically, a CdS sensor 7 is provided as a flame detection sensor capable of detecting flame. Further, below the burner 2, there is provided a combustion air supply port 9 for supplying the room air taken in from the indoor air intake port 8 for combustion.

The CdS sensor 7 is connected to the control device 10. Reference numeral 11 in FIG. 1 indicates a flame at the time of normal operation.

In the embodiment apparatus configured as described above, fuel is supplied from the fuel supply passage 3 into the burner 2 at the start of combustion. The supplied fuel is sucked up by the fuel suction member 5 and ignited by the ignition heater 4, and starts burning while generating a flame 11 in the combustion chamber 6. When the room is in a positive pressure state with respect to the outdoors (outdoors), the room air is taken in from the room air intake 8 as shown by the solid arrow in FIG. 1 and burned from the combustion air supply port 9 below the burner 2. It is supplied as burner air to the burner 2. Due to such an upward flow of the combustion gas, the flame 11 is generated in the combustion chamber 6 provided above the burner 2 and is not generated on the side opposite to the combustion chamber. Further, in this way, in the situation where the indoor air is sufficiently supplied as combustion air, the fuel is almost completely combusted. The exhaust gas generated by combustion smoothly flows out to the outside (outdoor) as shown by the white arrow.

When the inside of the room is in a negative pressure state relative to the outside (outdoors) due to the use of a ventilation fan or the like, the flame 11 is pulled to the negative pressure side, and is generated on the anti-combustion chamber side as shown in FIG. Incomplete combustion may result. Exhaust gas and unburned gas may also flow out to the indoor air intake 8 side, that is, to the room (negative pressure side), as indicated by the solid arrow in FIG.

However, since the CdS sensor 7 is provided on the anti-combustion chamber side, when a flame 11 is generated on the anti-combustion chamber side, the flame 11 is immediately and reliably detected by the CdS sensor 7.

When the flame 11 is detected, the operation of the device is immediately stopped via the control device 10 based on the signal from the CdS sensor 7 by an appropriate method such as stopping the fuel supply. Therefore, outflow of exhaust gas and unburned gas into the room is prevented.

The method of stopping the operation of the device performed via the control device 10 is not limited to the above-mentioned method, and a known appropriate method can be selected.

In the present embodiment, the CdS sensor 7 is used as the sensor capable of detecting the flame, but the present invention is not limited to this, and another optical sensor may be used. Also, any suitable sensor other than the optical sensor may be used.

[0018]

[Effect of device]

 As explained above, when the semi-hermetic oil stove incomplete combustion prevention device of the present invention is equipped with a flame detection sensor that can detect flames on the side opposite the combustion chamber, Even if a negative pressure is generated and a flame is generated on the side opposite to the combustion chamber, the flame detection sensor immediately detects the flame. When a flame is detected, the operation of the device is immediately stopped by a suitable publicly known method through the control device based on the signal from the flame detection sensor, so that exhaust gas and unburned gas flow into the room. Can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a semi-enclosed petroleum stove according to an embodiment of the present invention during normal combustion.

2 is a schematic configuration diagram of the apparatus of FIG. 1 during incomplete combustion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Burner 3 Fuel supply path 4 Ignition heater 5 Fuel suction member 6 Combustion chamber 7 CdS sensor (flame detection sensor) 8 Indoor air intake 9 Combustion air supply port 10 Control device 11 Flame

Claims (3)

[Scope of utility model registration request] 1. A semi-enclosed petroleum stove that includes a burner for burning fuel and a combustion chamber, takes in room air as combustion air, and discharges combustion gas to the outside of the room, on the side of the burner opposite to the combustion chamber. An incomplete combustion prevention device for a semi-enclosed oil stove, which is equipped with a sensor that can detect flames. 2. The incomplete combustion prevention device for a semi-enclosed petroleum stove according to claim 1, wherein the flame detection sensor is an optical sensor. 3. The incomplete combustion prevention device for a semi-enclosed petroleum stove according to claim 2, wherein the optical sensor is a CdS sensor.