JPH08161902A - Portable type watch fire device - Google Patents

Abstract

PURPOSE: To provide a watch fire device which is a portable type and has high safety. CONSTITUTION: A small gas bomb 4 in which liquefied butane gas is filled is used and a pressure-sensitive safety device 5, a reversing fire extinguishing appliance 8 and a safety device 7 for dealing with half-burnt fire are connected thereto. A flame generating part is constituted of a flame dish 10 and a baffle plate 11.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a bonfire device.

[0002]

2. Description of the Related Art A general gas lamp manufacturer produces only bonfires using city gas and propane gas.

[0003]

[Problems to be Solved by the Invention] In a propane gas bonfire, a gas cylinder, a safety device, an automatic operation panel, etc.
It becomes a large-scale device. Therefore, the character of a bonfire luminaire as a fixture is impaired. Liquid candles tend to incompletely burn, which causes smoke and odor problems. By mixing alcohol with a liquid candle, some improvement was seen, but the firepower and light amount became unstable, and the operation was complicated and it was not sufficient for actual use in the ceremony hall. As a result of studying various materials including solid combustion, it was thought that a liquid butane torch could be used, and the present invention was accomplished.

A flame suitable as a bonfire is (1) a flame that does not emit smoke because it is used indoors, and (2) a mellow or fluttering flame that looks like natural wood burning, such as hue, movement (fluctuation), etc. is there. In the conventional method of covering the discharge hole of the gas discharge pipe with the lid, the flame around the bowl-shaped cover on the burner becomes too pale. When the venturi is made smaller, it becomes less pale, but smoke is more likely to occur. It is difficult to control the gas pressure, the amount of air from the venturi, and the covering condition of the cover, and the shape of the flame tends to become unstable due to the wind from the outside. A bowl-shaped part is provided on the upper part of the gas discharge tube, and if stones, ceramics, etc. are put in this part, the flame is concentrated in the center, and the blue flame and the momentum of the flame are too strong.
In addition, the experimental results were improved somewhat by changing the nozzle diameter, the venturi position / caliber, the burner position / calibration, and the combination of stones and cover plates, but the shape of the flame, color, smoke amount, The favorable results such as the movement of the flame and the large consumption of gas were not obtained.

[0005]

In order to solve the above-mentioned problems, the present invention has a constitution as set forth in the claims.

[0006]

[Examples] When a cassette cylinder (small gas cylinder) releases gas, the temperature of the gas decreases due to the heat of vaporization, and the gas pressure inside the cylinder easily drops. Therefore, in a general cassette stove, heat from the burner is transferred to the cylinder in an appropriate amount so that the gas pressure of the cylinder can be kept constant. By doing so, it is designed to prevent the gas from dying out due to the pressure drop. Liquefied butane gas (2 kg / square centimeter) is propane gas (8 kg / square centimeter)
Compared with, the gas pressure sent from the cylinder is low, so when using the cylinder in cold regions or continuing to vaporize a large amount of gas, when the temperature of the cylinder drops, the gas pressure drops too much and the fire of the burner extinguishes. It is easy to do. In general, a commercially available cassette stove has a structure that the cassette cylinder is warmed to some extent by the radiant heat of the burner's fire to prevent it from disappearing, and the radiant heat can completely drain the liquid in the cassette cylinder. It has become. In this respect, combustion experiment data are shown.
The cassette cylinder and the burner were separated, and an experiment was conducted to see if it could be burned continuously. Experiment 1: Indoor temperature: approx. 20 degrees Combustion time: 1 hour Gas consumption: 68 g / h (748 kcal) Result: ・ Dew condensation around the cassette cylinder.・ About 3 minutes after ignition, the thermal power decreased, but after that, the flame became stable and continued to burn. Experiment 2: Indoor temperature ・ ・ ・ About 20 degrees Combustion time Approx. 80 minutes Gas consumption ・ ・ ・ 60g / h (660kcal) Result: ・ Condensation around the cassette cylinder ・ The flame becomes small 2-3 minutes before the flame disappears. -After extinguishing the fire, almost no liquid remained in the cassette cylinder and almost all of it evaporated. As long as it is used at room temperature (20 ° C.), it is expected that a slight change in the thermal power will occur, but it can be used. Gas consumption: 50 to 70 g / h (550 kcal to 770 kcal) One cassette cylinder can be used for about 3 and a half to 5 hours. Liquefied butane (LPG) gas cassette cylinder ・ Internal capacity: 250 g (2750 kcal) ・ Gas pressure: 2 kg / square centimeter It was found from the above experiment that the cassette cylinder can be used for a bonfire device.

Next, an embodiment of the ignition device of the present invention using a cassette cylinder will be described with reference to the drawings. The overall structure of the bonfire device of this embodiment is as shown in FIG. The flame stand 3 is supported by three columns 2, and the main body box 1 is provided below the columns. A gas cylinder 4, a pressure sensing safety device 5, a regulator 6, a safety device 7, and a fall fire extinguisher 8 are connected in the main body box 1 as shown in FIG. Is connected to the thermocouple 9 in the flame stand 3 via a wire passing through the inside. The gas supply path from the safety device 7 is the other one of the columns 2.
It goes through the book to flame stand 3.

In this embodiment, as a safety device, a thermocouple type safety device 7 (power is generated by the heat of a burner,
The safety valve is opened, and the valve automatically closes when it goes out), and the fall extinguishing device 8 and the pressure sensing safety device 5 are used. Each will be described below.

The thermocouple type safety device 7 is a device which automatically closes a gas valve to prevent gas leakage when the burner is extinguished due to wind or gas pressure drop. There is a flame detection end (thermocouple 9) on the burner side, and the burner is heated to generate an electric current. The thermoelectromotive force keeps the solenoid valve inside the box open. If the flame extinguishes due to some accident, the valve will close and stop the outflow of gas.

The tipping / extinguishing device 8 is provided with a tipping / extinguishing switch. When a strong shock is applied to the bonfire itself,
Or, in the event of a fall due to an earthquake, etc., the device shuts off the current of the thermocouple, closes the solenoid valve, and extinguishes fire.

The pressure sensing safety device 5 is a device for automatically shutting off gas and extinguishing the gas when the pressure inside the gas cylinder rises abnormally (4 to 6 kg / square centimeter). The structure is such that a pressure-sensitive automatic closing device is provided in the pressure gas supply passage from the gas cylinder, the inside of the valve casing of the pressure-sensitive automatic closing device is partitioned into a pressure receiving chamber and a gas delivery chamber, and it is provided at the bottom of the pressure receiving chamber. One opening of the gas receiving tank communicates with the gas cylinder through the inlet passage, and the other opening communicates with the bottom of the delivery chamber through the feeding passage, and the upper opening edge of the gas receiving tank is sealed in the pressure receiving chamber. A pressure receiving piston is provided by a spring so as to be elastically moved up and down, and a delivery valve having a minute gap is provided in a shutoff valve provided in the delivery chamber so as to be elastically moved up and down. Fitting a ball-and-socket valve seat in the recessed portion, communicating the valve seat with a gas delivery passage communicating with the burner, each piston rod protruding from the pressure receiving piston and each upper end surface of the valve rod protruding into the closing valve, Engage the tip surface of the engaging arm that is supported midway by a support shaft. But, those disclosed in JP-B-50-27429.

In the present embodiment, the flame generation part is made to have the following structure so that the flame shape can be made appropriate. Also, by adjusting the opening diameter of the venturi and the amount of gas fed, it is possible to adjust the momentum of the flame, the hue, and the presence or absence of smoke. Details of the structure of the flame stand 3 are as shown in FIG.

The gas has a characteristic of flowing upward along the inner surface of the flame tray 10 facing upward, and by adopting this structure, the diameter of the flame can be easily controlled. In addition, flame tray 10 (SUS
Made. By placing an upside-down dish (jamming plate 11) at the center of the outer diameter of 45 mm and the hole diameter of 12.9 mm in this example, the gas once hits the inside of the jamming plate 11 to reduce the momentum of the gas. The gas easily flows up along the inside of the flame tray 10. Therefore, the way the flame fluctuates becomes smooth and flustered, and the shape of the flame becomes less uneven. It also has an effect of preventing flashback (combustion inside the baffle plate 11). Further, by making the flame tray 10 deep to some extent, it is possible to reduce that the shape of the flame is disturbed by the wind from the outside, as compared with a general burner.

A baffle plate 11 (made of SUS304 with a slight gap in the hole portion of the flame tray 10; a diameter of 20 mm in this example)
There is. ) Is provided.

[0015]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, it has an excellent effect that it is small as a bonfire device, excellent in portability, and highly safe.

[Brief description of drawings]

FIG. 1 is an overall side view of an embodiment of the present invention.

FIG. 2 (a) is an enlarged side view (cross-sectional view) of a flame generating portion. (B) is a plan view of the same.

FIG. 3A is a side view (cross-sectional view) of the flame tray, and FIG.

FIG. 4A is a side view of the baffle plate, and FIG.

[Figure 5] Overall system configuration diagram

[Explanation of symbols]

 1 Main body box 2 Strut 3 Flame stand 4 Small gas cylinder 5 Pressure sensing safety device 6 Regulator 7 Safety device 8 Falling and extinguishing device 9 Thermocouple 10 Flame tray 11 Jammer plate

Claims (6)

[Claims] 1. A portable bonfire device using a small gas cylinder as a fuel source. 2. The portable bonfire device according to claim 1, wherein the gas to be filled in the small gas cylinder is liquefied butane gas. 3. The portable bonfire device according to claim 1, further comprising a flame detection device and means for inputting a signal indicating that the flame is extinguished from the flame detection device to cut off gas emission. 4. The portable bonfire apparatus according to claim 1, 2 or 3, further comprising means for detecting a fall state and shutting off gas discharge. 5. The apparatus according to claim 1, further comprising means for detecting the pressure of the gas delivered from the gas cylinder and interrupting the release of the gas when the pressure exceeds a certain value. Portable bonfire device. 6. A concave flame tray having a hole in the center of the flame generation portion, and a baffle plate covering the upper surface of the hole portion with a slight gap therebetween is provided. The portable bonfire device described in 5.