JPH0227306Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a gas burner used in gas stoves, gas rice cookers, and various gas and oil burning appliances that gasify liquid fuel, such as oil stoves.

[Conventional technology]

Nitrogen oxides generated when a gas burner burns are
It is harmful along with carbon monoxide caused by incomplete combustion, so if it is exhausted indoors, it directly affects the people in the room, and if it is exhausted outdoors, it pollutes the atmosphere, so its complete removal is desired.

Therefore, conventionally, as a means to remove harmful components such as nitrogen oxides, an aqueous solution of nitrogen compounds is atomized and supplied together with air to the combustion tube of liquid fuel devices such as kerosene stoves to prevent nitrogen oxides generated when liquid fuel is burned. (e.g., Special Public Interest Publications 55-5003)
(Japanese Patent Publication No. 56), or a method that prevents the generation of harmful gases such as nitrogen oxides by atomizing and mixing fuel and water and supplying this into the vent lily section of the blower tube to the burner section (for example, Japanese Patent Publication No. 56 Furthermore, finely powdered water particles are mixed into the fuel in the air pipe of a burner, etc. by pressurizing the air with a fan to increase combustion efficiency, resulting in the production of nitrogen oxides. Something that prevents the occurrence of such things (for example,
-134832).

[The problem that the idea aims to solve]

None of the above conventional technologies apply measures to remove harmful components such as nitrogen oxides to normal pressure burners, so-called Binsen gas burners, and are structurally complex, so they are not practical. It lacked sex.

In view of such problems with the conventional technology, this invention was developed by introducing water vapor from a steam generator into the mixing chamber of a so-called Bunsen gas burner, which is a normal pressure burner, and thereby adding water vapor to the gas-air mixture. The aim is to completely remove nitrogen oxides from the combustion gas by reducing them with the hydrogen contained in the water vapor during combustion, and also to humidify the air through combustion to enhance its humidifying effect. The present invention provides a gas burner for gas combustion appliances.

[Means to solve the problem]

In order to achieve the above object, this invention has a gas nozzle facing the mixing chamber of a so-called Bunsen gas burner, which is a normal pressure burner, and a water tank is provided at the bottom of the mixing chamber, and the water in the tank is converted into steam by a steam generator. A technical measure is adopted in which steam is generated in a mixing chamber, and the generated steam is mixed with gas by the ejection force of a gas nozzle and guided to the burner head via a mixing pipe.

[Effect]

As the required amount of water vapor is added to the gas-air mixture, nitrogen oxides are reduced by the hydrogen contained in the water vapor during combustion in the burner head, completely removing nitrogen oxides from the combustion gas. do. Furthermore, since the air is humidified through combustion, its humidifying effect is also significant.

〔Example〕

Embodiments of the Bunsen type gas burner for gas combustion appliances according to this invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the gas burner according to this invention, in which A is a Bunsen type gas burner consisting of a burner head 2 and a mixing tube 3;
A bulge is integrally provided at the base end of the mixing tube 3 to form a mixing chamber. B is a steam generator for sending an appropriate amount of water vapor to the mixing chamber 1. A steam generator 5 that uses low frequency is attached to the steam generator 4 provided at the rear lower part of the mixing chamber 1. The power supply 6
In addition, the steam generating section 4 is successively supplied with water from a water tank 7 via a conduit 8 to maintain a constant water level at all times, and the steam generated in the steam generating section 4 flows into the mixing chamber 1. The combustion air and fuel gas are mixed into a mixture of combustion air and fuel gas. A gas nozzle 9 is provided near the front of the mixing chamber 1 for supplying fuel gas to the mixing chamber 1. Reference numeral 10 denotes an air inlet for supplying combustion air to the mixing chamber 1, which is bored at the upper rear of the mixing chamber 1. The fuel gas a spouted from the gas nozzle 9, the combustion air b introduced from the air introduction port 10, and the steam c from the steam generation section 4 are mixed into the mixing chamber 1.
The mixture is mixed within the combustion chamber and introduced into the burner head 2 via the mixing tube 3 for combustion.

FIG. 2 shows a second embodiment of the gas burner according to this invention, in which the steam generator B is different from the first embodiment. That is, a spray nozzle pipe 11 is led out from the steam generating section 4, and its tip jet nozzle 11a is arranged near the gas nozzle 9, so that the water vapor sprayed from the jet nozzle 11a is guided to the mixing chamber 1. . In the second embodiment, the gas burner A and other structures are the same as those in the first embodiment, so the same parts are given the same reference numerals and the explanation thereof will be omitted.

In the first and second embodiments described above, the steam generator B is provided integrally with the mixing chamber 1 of the gas burner A, but the steam generator B is provided separately from the gas burner A, and the steam generator B is provided separately from the gas burner A. The water vapor from B may be guided to the mixing chamber 1 via a supply pipe or the like. Furthermore, the same effect can be obtained by installing a mist sprayer in place of the steam generator B and supplying atomized water from the sprayer to the mixing chamber 1.

[Effect of idea]

As explained above, this idea has a structure in which water vapor from the steam generator is introduced into the mixing chamber of the gas burner, and water vapor is added to the mixture of gas and air by the ejection force of the gas nozzle. Nitrogen oxides are reduced by the hydrogen contained in the combustion gas, completely removing them from the combustion gas, so they do not have any negative impact on humans or pollute the atmosphere. In addition, since the air is humidified through combustion, its humidifying effect is remarkable, and it can also serve as a humidifier for various gas combustion appliances, so it is especially useful for heaters that require humidification, since there is no need to install a separate humidifier. be.

Furthermore, since the mixing chamber of the gas burner and the steam generator are installed in conjunction with each other, the gas burner is a so-called Bunsen type atmospheric pressure burner, and the structure is simple, making it easy to use as a heating source for gas stoves, gas rice cookers, etc. It is effective when used.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing one embodiment of a gas burner for a gas combustion appliance according to this invention, and FIG. 2 is a schematic sectional view of a different embodiment. A...Gas burner, 1...Mixing chamber, B...Steam generator, 9...Gas nozzle.

Claims (1)

[Scope of utility model registration request] Normal pressure burner, so-called Bunsen gas burner A
The gas nozzle 9 faces the mixing chamber 1 of
A water tank 7 is provided at the bottom of the tank, water in the tank is used to generate steam in a mixing chamber by a steam generator B, the generated steam is mixed with gas by the ejection force of the gas nozzle, and is sent to the burner head via the mixing pipe 3. A gas burner for gas combustion appliances that leads to 2.