JPH0749360Y2 - Gas leak detection device inside and outside the gas furnace - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting gas leaks inside and outside a gas furnace, which is different from the conventional device as long as the leak of the supply gas of the gas furnace using gas such as propane gas as fuel is in the furnace. Even if it is a small amount, it can be detected early, and if it is leaking in the supply line outside the furnace leading to the furnace, it can be detected as usual if it is around the furnace, and the filling of the furnace wall opening is performed. The present invention relates to a gas leak detection device configured to have a special action by the heat resistant fiber of.

[0002]

2. Description of the Related Art A gas leak alarm is a device that detects flammable gas and sounds an alarm. In addition, if there is a gas leak inside a gas furnace that uses gas or vaporized gas as a heating fuel, this may lead to a serious accident resulting in a personal injury. Must be installed. However, gas leaks inside the furnace will be discovered later and will be a win. The main reason is
Conventionally, a non-heat resistant gas leak alarm that detects gas leaking into the atmosphere is generally used, and even if gas leaks in the furnace,
This is because it could not be detected until the gas leaked out of the furnace.

There are various causes of gas leakage in the furnace. For example, it is a general rule to close the gas supply cock around the furnace after firing in a gas furnace, but inadvertently forget to close the cock. In this case, raw gas was supplied to the furnace at the time of the next ignition, and this raw gas filled the inside of the furnace, and there was a danger of a large explosion at the time of ignition. There is a risk of causing damage such as damage to the firing material such as roof tile material and the furnace body. Even if the user does not forget to close it, it will disappear when the fire is low, such as in the early stages of ignition, and when a person ignites by forgetting that raw gas must be expelled from the furnace before re-ignition, the same accident will occur. The gas leak accident resulting from the above may cause a personal injury as described above, but it is impossible to completely prevent accidental accidental mistake.

[0004]

SUMMARY OF THE INVENTION In the present invention, the air inside the furnace is constantly sucked out by a suction pump during firing, and dry air without drain is supplied to a gas leak alarm outside the furnace, and The purpose of the present invention is to provide a device that can immediately detect a gas leak, and to provide a gas leak alarm for a gas-water separation port that is indispensable for satisfying the above-mentioned requirements of the device. It is what

[0005]

According to a first aspect of the present invention, a furnace wall is provided with a suction port filled with heat-resistant fiber, and a pipe pipe outside the furnace connected to the suction port is provided with a water vapor. A gas leak detection device of a gas furnace, characterized in that it is connected to a suction pump via a separation pot, and a discharge side pipe of the suction pump is connected to a gas leak alarm installed outside the furnace, According to a second aspect of the present invention, the air / water separation pot is composed of a closed air / water separation chamber and a heat chamber, and a pipe pipe connected to the suction port is introduced into the air / water separation chamber, and the chamber is also provided. An overflow pipe for discharging excess water by accumulating a drain accumulating at a higher level than the lower end of the passage pipe line is installed, and the heat chamber is opened above the separated water in the air-water separation chamber, After forming the heat receiving part with Place a pipe in communication with the side,
The gas leak detecting apparatus according to claim 1, wherein the heat receiving unit is provided with a heating device.

[0006]

According to the first aspect of the present invention, the gas leak outside the furnace is provided by the special structure in which the suction port 2 of the suction pump 6 is provided in the furnace and the discharge side pipe of the pump is connected to the gas leak alarm device outside the furnace. In addition, the heat-resistant fiber with a filter function at the suction port can be used to detect raw gas by closing the burner port after oxidizing and firing the roof tile material with a gas furnace equipped with the gas leak detection device of the present invention. If you use it for smoking without sending it to the furnace from the supply pipe installed on the ceiling other than the burner and without burning it, and if you do not use the suction pump at that time, the heat-resistant fiber will smolder and become a resistance element of fuel soot flowing out of the furnace. Moreover, since the water sealing effect of the head pressure of the steam separation chamber completely prevents the outflow of the raw gas supplied to the inside of the furnace from the outside of the furnace, the raw gas and the smoked fuel soot can be discharged without providing a cock etc. in the pipe line. Is sent to the gas leak alarm and malfunctions And without further the smoked fuel soot deposited as has the effect of such trouble and operation for preventing it does not need at all due to the accumulation of fuel soot smoked since burned with tile dough oxidizing calcination to be next.

According to the second aspect of the present invention, the pipe line 3 connected to the suction port is passed through the water / water separation chamber 13, and the drain accumulated in the chamber 3 is higher than the lower end of the through pipe line 3. Since an overflow pipe that stores and discharges excess water is installed to seal the water between the pipe line 3 and the gas leak alarm, it is no longer necessary to provide a cock or the like in the pipe line 3 to prevent malfunction. Prevent more effectively.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attached drawings show an embodiment of the present invention, FIG. 1 is a block diagram of the invention of claim 1, and FIG. 2 is a suction port filled with heat-resistant fiber provided in a furnace wall and a pipe connected to the suction port. FIG. 3 is an enlarged schematic sectional view of the pipe, and FIG.

FIG. 1 is a block diagram of a detection device according to claim 1 of the present invention. Inside a gas furnace 1 heated with gas fuel or gasified fuel as a fuel, except during reduction firing and smoking. , A pipe line 3 connected to a suction port 2 for constantly sucking a part of the inner air, and a suction pump 6 outside the furnace.
The gas-water separation pot 4 is interposed between the suction pipe 5 and the suction pipe 5, and is sent to the gas leak alarm 11 via the discharge pipe 7 of the suction pump 6. As shown in FIG. 2, the furnace wall is provided with through-holes 8 penetrating inside and outside,
A pipe 9a filled with heat-resistant fiber 9 is passed through the through hole 8, and the suction port 2 is fixedly fitted to the outside of the furnace wall at a position where the through hole 8 is closed, and the pipe line 3 is connected thereto.

According to the apparatus of this embodiment, some of the air inside the gas furnace or the combustion gas is sucked by the suction pump 6 except during the reduction firing and the smoldering, and when there is a gas leak in the furnace, it is promptly performed. Since the gas leak is notified by an alarm sound that sounds the gas leak alarm device 11, or the notification and the gas cutoff are performed, it is possible to quickly and rapidly take measures against the gas leak. When the gas furnace of the present invention is continuously used, for example, for firing the roof tile material and for smoking without burning fuel gas, the heat-resistant fiber 9 of the suction port 2 serves as a resistance against the outflow of smoked fuel soot from the furnace, and Since the water sealing effect due to the head pressure of the steam separation chamber completely prevents outflow of raw gas supplied to the inside of the furnace, it is not necessary to provide the pipe line 3 with a cock or the like for closing the line. Since the smoked fuel soot adhered as described above is burnt down with the subsequent oxidation and firing of the roof tile material, there is no need for troubles due to the accumulation of smoked fuel soot and an operation for preventing it.

FIG. 3 shows a concrete embodiment of the invention according to claim 2 of the present invention.
Air-water separation chamber 1 in which the partition wall 12 is divided into upper and lower parts and sealed.
3 and the heat chamber 14 are separated. The pipe line 3 connected to the suction port 2 is passed into the air / water separation chamber 13 up to near the bottom, and the separated water D accumulated in the separation chamber 13 is stored higher than the lower end of the pipe line 3 so that excess water can be stored. Are excluded to the outside by the overflow pipe P. The heat chamber 14 is provided with a pipe 5 that opens from the partition wall 12 to the separated water D of the steam separation chamber 13, and the pipe 5 is formed in the heat receiving portion 5a such as a coil winding in the heat chamber 14 to form the heat chamber 14. The pipe pipe 3 is sealed with water in the air / water separation chamber 13 by communicating with the suction side of the suction pump 6. A light bulb L is hung as a heating device for raising the dew point of the pipe on the heat receiving portion 5a.

This embodiment constitutes a specific example of the steam / water separation pot 4 of the invention related to the apparatus of claim 1, and one steam / water separation pot 4 is sealed by a partition wall 12 to separate the steam / water separation chamber 13. And the heat chamber 14 which is not sealed and which has been subjected to the above-mentioned formation, the air passing through the pipe 5 according to claim 1.
It is possible to raise the dew points of the combustion gas and the raw gas components and constantly supply them from the discharge side of the suction pump 6 to the gas leak alarm device 11 under substantially the same conditions to issue a gas leak alarm.

[0013]

The invention according to claim 1 of the present invention has the above-described action, and as described in the embodiment, the gas leak which is difficult to detect because it is inside the gas furnace is sucked from the inside of the furnace. It is configured so that it can be sucked in by a pump and supplied to a gas leak alarm, enabling early detection of gas leak inside the furnace.
Further, the gas furnace of the present invention can be used for oxidation and reduction smoldering of tile roof tiles. At that time, the heat-resistant fiber 9 of the suction port 2 which acts as a filter prevents smoke from flowing out of the furnace. Increase. Further, a gas leak from a gas supply pipe or the like arranged outside the furnace can be detected by a gas leak alarm device 11 installed around the gas furnace in the conventional manner. According to the invention of claim 2, gas leakage from the discharge port of the suction pump 6 is always performed under substantially the same drying conditions regardless of whether the temperature of the furnace is high or low and the water sealing action of the air / water separation chamber 13 which is closed except during reduction firing. When the combustible gas is contained in the alarm device 11, the alarm for detection can be triggered more accurately.

[Brief description of drawings]

 The attached drawings show an embodiment of the present invention,

1 is a block diagram of the device of claim 1;

FIG. 2 is an enlarged cross-sectional view near the suction port of the furnace wall.

FIG. 3 is a specific configuration diagram of the device of claim 2.

[Explanation of symbols]

1 gas furnace, 2 suction ports, 3 pipe lines, 4
Air / water separation pot, 5 suction pipes, 6 suction pump,
7 discharge pipe, 8 through hole, 8a pipe, 9 heat resistant fiber, 11 gas leak alarm, 12 bulkhead, 13
Air / water separation chamber, 14 heat chamber, D overflow water, P overflow pipe

Claims (2)

[Scope of utility model registration request] 1. A furnace wall is provided with a suction port filled with heat-resistant fibers, and a pipe pipe outside the furnace connected to the suction port is provided.
A gas leak detection device inside and outside a gas furnace, characterized in that it is connected to a suction pump via a steam separation port, and a discharge side pipe of the suction pump is connected to a gas leak alarm installed outside the furnace. . 2. A steam / water separation pot is composed of a sealed steam / water separation chamber and a heat chamber, and a pipe pipeline connected to the suction port is introduced into the steam / water separation chamber and accumulated therein. An overflow pipe is installed to store the separated water consisting of a drain higher than the lower end of the inflow pipe conduit and discharge the surplus water.The heat chamber is opened above the separated water in the steam separation chamber, and inside the heat chamber. The gas leak detection device inside and outside the gas furnace according to claim 1, wherein a pipe communicating with the suction side of the suction pump is formed after the heat receiving portion is formed, and a heating device is provided in the heat receiving portion.