Infrared ray gas burner

Abstract

An infrared ray gas burner comprises an ignition valve, a nozzle, an ejector, a furnace chamber, a porous combustion radiant panel and an ignition needle. An ignition nozzle is placed in the furnace chamber, a sundries baffle is provided in the furnace chamber below the porous combustion radiant panel and above the ignition nozzle and the ignition needle is set above the porous combustion radiant panel, so the gas for ignition ejected from the ignition nozzle quickly mixes with the air inside the furnace chamber, and the gas-air mixture escapes from fire holes of the porous combustion radiant panel above the ignition nozzle. The gas concentration of the mixed gas is relatively high and suitable for igniting, the main burner can be quickly ignited, there is no black smoke, obviously incomplete combustion, and it brings a high ignition rate.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a U.S. National Stage entry under 35 U.S.C. §371 of International Application No. PCT / CN2012 / 082852, filed on 12 Oct. 2012, which claims benefit of Chinese Application No. 201210110806.7, filed on 13 Apr. 2012, which is hereby incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates generally to a gas burner, and particularly to an improvement on the ignition system of a household infrared ray gas burner.BACKGROUND OF THE INVENTION[0003]With the improvement of people's living standards, gas utensils, such as home gas cooker, warmer and barbecue oven, have spread to millions of households; wherein, the infrared ray gas burner has been accepted by domestic customer, commercial user and industrial user, because it has obvious high performances on energy efficiency and environmental protection, cleanliness of health and safe and reliable. Since a larger relatively large pri...

AI Technical Summary

Benefits of technology

The invention improves the ignition structure of a burner by introducing a new infrared ray burner that has a beautiful appearance, high reliability, good combustion performance, and is easy to install and adapted to a wide range of gases. The present invention can be used for various gas appliances and has a simple and credible structure. The burner's ignition system consists of an ignition nozzle, a sundries baffle, and an ignition needle, which helps in quick ignition and spread of flame to the entire ignition surface.

Problems solved by technology

Since a larger relatively large primary air coefficient has been adopted by the infrared ray gas burner, and the burner will be normally ignited and combusted only after the air in the furnace chamber of the burner, which chamber is used for mixing burner gas with primary air and is fairly large, has been emptied, therefore, it is difficult to directly ignite the gas-air mixture escaping from a fire hole by pulse electrical sparkle or piezoelectric ceramic ignition, both of which are easy to produce deflagration when ignition, and generally the ignition is achieved by igniting the main burner via a start-up burner through an ignition nozzle.

1. In the way of igniting the burner from the outside of the burner by igniting on the external perimeter of the burner, its structural design must keep a certain gap between the burner and the disc or the cooker surface, otherwise, the main burner ignited by an ignition flame will be affected, but this structure obviously affects the appearance of the product, and makes the product be no vitality and no market value. In addition, the ignition flame is large, so the decorative sheet or the cooker surface around the burner will be blackened that obviously affects the appearance of the product, and at the same time, there is much incomplete combustion therein.

2. In the way of igniting the burner from outside flame by an ignition nozzle placed at the bottom of the burner, it needs a center channel to ignite the main burner. In the moment of igniting the start-up burner, flareback is likely to happen after the flame spurts and touches the ignition plate, which will burn in front of the start-up burner, and the transmission distance of the flame is not enough to reach the main fire hole or main fire plate, therefore resulting in misfire or deflagration.

3. In the way of igniting the burner from outside flame by an ignition nozzle placed at the bottom of the burner, it needs a center channel to ignite the main burner. Due to the limited diameter of the center channel, it has a certain obstruction against the transmission of the flame. When the piping gas pressure is low, the ignition flame cannot overcome the resistance to reach the main fire hole, resulting in misfire. When the piping gas pressure is high, the air in the center channel is quickly removing by the smoke generated by the ignition flame, and then the transmission of the flam is limited due to lack of oxygen in the channel.

4. In the way of igniting the burner from outside flame by an ignition nozzle placed at the bottom of the burner, it needs a center channel to ignite the main burner. Because the ignition center channel is small, the ignition flame is generally large and black and has obviously incomplete combustion, and the gas-air mixture of the main burner lags to reach the main ignition fire hole with low concentration; when ignition is not successfully achieved in the ignition moment, the ignition flame will be directed to the bottom of the burner, and due to the inertia of the flame, the ignition flame cannot stay on the surface or side face of the main ignition fire hole, and therefore cannot normally ignite the burner.

5. In the way of igniting the burner from outside flame by an ignition nozzle placed at the bottom of the burner, the structures of the ignition nozzle and the ignition support are more complex, so they are not easy to be installed at the bottom of the burner or in the narrow space of the center channel, and the reliability and precision of the installation are low, and therefore result in poor ignition performance of the product.

6. In the way of direct ignition through an ignition flame on the upper surface of the infrared ray combustion radiant panel, since the chamber volume of the infrared ray burner is large, it needs a long time for the gas-air mixture to extrude the original air in the chamber, and the concentration of the gas is low, so it is difficult to ignite and causes a low fire rate, especially when igniting by piezoelectric ceramics it is very difficult to achieve normal ignition.

Therefore, how to design and change the structure of the burner so as to improve the appearance and ignition reliability of the product becomes a tough technique problem in the product design of infrared ray gas burner for domestic and commercial use, especially in the design of built-in type infrared ray cooker at present.

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