CN204201900U - The burner of gas-cooker and gas-cooker - Google Patents

Abstract

The utility model provides a kind of burner and gas-cooker of gas-cooker.Wherein, the burner of gas-cooker comprises: outer shroud air flue, and its top has outer burner port; Inner ring air flue, is positioned at the inner side of outer shroud air flue and forms the air duct of annular separately with outer shroud air flue, and the top of inner ring air flue has internal combustion hole burning; And back-up ring, between outer shroud air flue and inner ring air flue, and be connected with the middle part of the madial wall of outer shroud air flue or top outside it, the lateral wall of inner edge and inner ring air flue separately.The burner of the gas-cooker that the utility model provides can reduce the growing amount of nitrogen oxide time burning in combustion gas combustion outer hole place, prevent the content overproof of nitrogen oxides in effluent, effectively avoid consumer when using gas-cooker, suck too much pernicious gas, meet environmental protection, healthy designing requirement better.

Description

Burners and gas hobs for gas hobs

technical field

The utility model relates to the field of household appliances, in particular to a burner of a gas stove and a gas stove including the burner.

Background technique

As shown in Figure 1, when the gas discharged from the outer combustion hole 221' of the burner 1' of the gas range burns, a part of the combustion-supporting oxygen required comes from the secondary air flowing from bottom to top along the air channel 8'. Among them, the oxygen in the secondary air will react with the gas to burn, and when the combustion temperature is high, the nitrogen in the secondary air will also participate in the combustion reaction to form nitrogen oxides, which are discharged into the air. It will have an adverse impact on the environment (it is one of the factors that produce acid rain), which is not conducive to environmental protection, and also affects the health of consumers. Therefore, how to reduce or even eliminate the generation of nitrogen oxides and prevent the generation of carbon monoxide gas is a technical problem that needs to be solved urgently.

The solution adopted in the prior art is to reduce the supply of secondary air by setting a secondary air retaining ring at the bottom of the gas distribution plate or by reducing the cross-sectional area of the air channel 8', so as to reduce nitrogen oxidation. for the purpose of biogenesis. However, due to the reduction in the supplementary amount of secondary air, the oxygen required for combustion will be insufficient, which will easily cause incomplete combustion, and fail to prevent the formation of carbon monoxide, so that the content of carbon monoxide in the flue gas exceeds the standard, which cannot Eliminate adverse impacts on the environment and consumer health.

Utility model content

It can be seen from the analysis of the background technology that the transmission path and transmission volume of the secondary air in the air channel have a great influence on the generation of nitrogen oxides and carbon monoxide at the external combustion hole, so it can be controlled by controlling the secondary air in the air channel. The delivery path in the air channel controls the production of nitrogen oxides and carbon monoxide at the outer combustion holes.

The utility model aims at at least solving one of the technical problems existing in the prior art.

For this reason, the utility model provides an environmentally friendly and healthy gas stove burner that can reduce or even eliminate the emission of nitrogen oxides and carbon monoxide. The production of nitrogen oxides and carbon monoxide can better meet the requirements of environmental protection, thereby reducing the harm to consumers' health.

In order to achieve the above purpose, an embodiment of an aspect of the present utility model provides a burner for a gas stove, which includes: an outer ring air passage, with an outer combustion hole in the upper part; an inner ring air passage, located in the outer ring air passage The inner side is spaced from the outer ring air passage to form an annular air passage, and the upper part of the inner ring air passage has an inner combustion hole; and a retaining ring (set closer to the outer combustion hole), located in the outer ring Between the air channel and the inner ring air channel, the outer edge is connected to the middle or upper part of the inner wall of the outer ring air channel, and the inner edge is spaced from the outer wall of the inner ring air channel.

The burner of the gas stove provided by the utility model changes the flow direction of the secondary air in the air channel by arranging the retaining ring on the middle or upper part of the inner wall of the outer ring air channel, so that the flow direction of the secondary air in the air channel The flow direction is far away from the combustion flame at the outer combustion hole to prevent the secondary air from being supplied too much to the flame under the action of the ejection of the flame and the buoyancy force, which will increase the generation of nitrogen oxides.

Therefore: the burner of the gas stove provided by the utility model can reduce the generation of nitrogen oxides when the gas is burned at the outer combustion hole, prevent the content of nitrogen oxides in the flue gas from exceeding the standard, and effectively prevent consumers from using the gas stove. Inhaling too much harmful gas better meets the design requirements of environmental protection and health.

In addition, the burner of the gas stove provided according to the above-mentioned embodiment of the utility model also has the following additional technical features:

According to an embodiment of the present invention, the outer edge of the retaining ring is connected to the middle part of the inner side wall of the outer ring airway, and the inner edge is spaced apart from the outer side wall of the inner ring airway.

After the retaining ring is added, the flow of the secondary air needs to bypass the retaining ring, so that the flow direction of the secondary air can be further away from the burning flame, so that the ejection and thermal pressure of the flame on the secondary air are weakened. The content of secondary air in the flame is reduced (to solve the problem of nitrogen oxides generated due to excessive secondary air supply), so as to achieve the purpose of reducing the amount of nitrogen oxides generated.

According to an embodiment of the present utility model, the width of the retaining ring is 4-8 mm.

When the width of the retaining ring is too narrow, the flow direction of the secondary air will be too close to the flame, which cannot effectively reduce the emission of nitrogen oxides; when the width of the retaining ring is too wide, it will cause secondary air entering the flame. The amount of air is too small, resulting in incomplete combustion of the combustibles, and the carbon monoxide content in the flue gas exceeds the standard; therefore, the width of the retaining ring is preferably 4-8 mm, especially when the width of the retaining ring is 6 mm, the effect is better.

According to an embodiment of the present invention, the burner of the gas stove further includes: a connecting pipe, located between the outer ring air passage and the inner ring air passage, and communicating with the outer ring air passage and the inner ring air passage. The inner ring airway.

According to an embodiment of the present invention, the connecting pipes include a plurality of connecting pipes arranged at intervals along the circumferential direction.

According to an embodiment of the present invention, the outer ring air passage includes: an outer ring air groove with an open upper end, the outer nozzle of the connecting pipe is connected to the inner side wall of the outer ring air groove; and an outer ring fire cover , the cover is mounted on the upper opening of the outer ring air groove, and the outer combustion hole is opened on the upper surface of the outer ring fire cover.

According to an embodiment of the present utility model, the outer edge of the retaining ring is positioned between the inner side wall of the outer ring air groove and the inner side wall of the outer ring cover.

According to one embodiment of the present invention, the inner ring air passage includes: an inner ring air groove with an open upper end, the inner nozzle of the connecting pipe is connected with the outer side wall of the inner ring air groove; and an inner ring fire cover , the cover is mounted on the upper opening of the inner ring air groove, and the inner combustion hole is opened on the upper surface of the inner ring fire cover.

According to an embodiment of the present utility model, the outer ring air groove, the connecting pipe and the inner ring air groove are of an integrated structure.

The one-piece structure can reduce the number of parts of the burner, thereby improving the assembly efficiency of the burner and facilitating production. It should be noted that the outer ring air groove, the connecting pipe and the inner ring air groove of the integrated structure are the gas distribution plate.

An embodiment of another aspect of the present utility model provides a gas cooker, including the burner of the gas cooker described in any one of the above embodiments.

The gas stove provided by the utility model can effectively reduce the emission of nitrogen oxides in the gas combustion process, make the use of the gas stove more environmentally friendly and healthy, and conform to the design concept of modern technology.

In summary, the burner of the gas stove provided by the utility model can reduce the amount of nitrogen oxides generated when the gas is burned at the outer combustion hole, prevent the content of nitrogen oxides in the flue gas from exceeding the standard, and effectively prevent consumers from using gas When using the stove, too much harmful gas is inhaled, which better meets the design requirements of environmental protection and health.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a front view sectional structural schematic diagram of a burner of a gas stove in the prior art;

Fig. 2 is a top view structural diagram of a burner of a gas stove according to an embodiment of the present invention;

Fig. 3 is the A-A sectional structure schematic diagram of burner shown in Fig. 2;

Fig. 4 is a schematic diagram of an exploded structure of the burner shown in Fig. 2;

Fig. 5 is a schematic top view structure diagram of a gas stove according to an embodiment of the present invention;

Fig. 6 is a B-B sectional structural schematic diagram of the gas stove shown in Fig. 5;

FIG. 7 is a schematic diagram of a partially enlarged structure of part C in FIG. 6 .

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 is:

1' burner for gas stove, 221' outer burner hole, 8' air channel.

Wherein, the corresponding relationship between reference numerals and component names in Fig. 2 to Fig. 7 is:

1 burner of gas stove, 2 outer ring air passage, 21 outer ring air groove, 22 outer ring fire cover, 221 outer combustion hole, 3 inner ring air passage, 31 inner ring air groove, 32 inner ring air cover, 321 inner Combustion holes, 4 retaining rings, 5 connecting pipes, 6 gas trays, 7 gas stoves, and 8 air passages.

Detailed ways

In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from those described here, therefore, the protection scope of the utility model is not limited by the following disclosure limitations of specific examples.

It can be seen from the analysis of the background technology that the transmission path and transmission volume of the secondary air in the air channel have a great influence on the generation of nitrogen oxides and carbon monoxide at the external combustion hole, so it can be controlled by controlling the secondary air in the air channel. The delivery path in the air channel controls the production of nitrogen oxides and carbon monoxide at the outer combustion holes.

The burner of the gas stove according to some embodiments of the present utility model will be described below with reference to the accompanying drawings.

As shown in Fig. 2 to Fig. 4 and Fig. 7, the utility model provides a burner 1 of a gas cooker, comprising: an outer ring air channel 2 with an outer combustion hole 221 on its upper part; an inner ring air channel 3 located at the The inner side of the outer ring air channel 2 and spaced apart from the outer ring air channel 2 form an annular air passage 8, and the top of the inner ring air channel 3 has an inner combustion hole 321; and the retaining ring 4 (like this It can be closer to the outer combustion hole 221), between the outer ring air passage 2 and the inner ring air passage 3, and its outer edge is connected with the middle or upper part of the inner side wall of the outer ring air passage 2, The inner edge is spaced from the outer wall of the inner ring air channel 3 .

The burner 1 of the gas stove provided by the utility model changes the flow direction of the secondary air in the air channel 8 by setting the retaining ring 4 on the middle or upper part of the inner wall of the outer ring air channel 2, so that the secondary air is The flow direction in the air channel 8 is far away from the combustion flame at the outer combustion hole 221, so as to prevent the secondary air from being excessively supplied to the flame under the ejection effect of the flame and the buoyancy force, thereby reducing the amount of nitrogen oxides produced. Increased problems occur.

Therefore, the burner 1 of the gas stove provided by the utility model can reduce the generation of nitrogen oxides when the gas is burned at the outer combustion hole 221, prevent the content of nitrogen oxides in the flue gas from exceeding the standard, and effectively prevent consumers from using the gas stove. When inhaling too much harmful gas, it better meets the design requirements of environmental protection and health.

In addition, the burner 1 of the gas stove provided according to the above-mentioned embodiment of the utility model also has the following additional technical features:

Preferably, as shown in FIG. 3 , FIG. 4 and FIG. 7 , the outer edge of the retaining ring 4 is connected to the middle part of the inner wall of the outer ring air channel 2 , and the inner edge is connected to the outer wall of the inner ring air channel 3 . interval.

After the retaining ring 4 is added, the flow of the secondary air needs to bypass the retaining ring 4, so that the flow direction of the secondary air can be further away from the burning flame, so that the ejection and thermal pressure of the flame on the secondary air Weaken, reduce the content of secondary air in the flame (to solve the problem of nitrogen oxides generated due to excessive secondary air supply), and achieve the purpose of reducing the amount of nitrogen oxides generated.

It should be noted that the outer edge of the retaining ring 4 is connected to the upper part of the inner side wall of the outer ring air passage 2, and the inner edge is spaced from the outer side wall of the inner ring air passage 3, which can also achieve the purpose of this application, and its purpose does not deviate from this practical application. New design ideas should fall within the scope of protection of this application.

Optionally, the width of the retaining ring 4 is 4-8 mm.

When the width of the retaining ring 4 is too narrow, it will cause the flow direction of the secondary air to be too close to the flame, which cannot effectively reduce the emission of nitrogen oxides; The amount of secondary air is too small, resulting in incomplete combustion of the combustibles, and the carbon monoxide content in the flue gas exceeds the standard; Better results.

Specifically, as shown in Figures 2 to 4, the burner 1 of the gas stove further includes: a connecting pipe 5, located between the outer ring air channel 2 and the inner ring air channel 3, and communicating with The outer ring air channel 2 and the inner ring air channel 3 .

Preferably, as shown in FIG. 2 and FIG. 4 , the connecting pipes 5 include a plurality of connecting pipes 5 arranged at intervals along the circumferential direction.

In this embodiment, there are five connecting pipes 5. Of course, there can be three, four, six etc. connecting pipes, all of which can achieve the purpose of this application, and its purpose does not deviate from the design concept of the present utility model. , should fall within the protection scope of this application.

Specifically, as shown in FIGS. 3 and 4 , the outer ring air channel 2 includes: an outer ring air groove 21 with an open upper end, and the outer nozzle of the connecting pipe 5 is in contact with the inner side wall of the outer ring air groove 21 Connect; and the outer ring fire cover 22, the cover is mounted on the upper opening of the outer ring air groove 21, and the outer combustion hole 221 is opened on the upper surface of the outer ring fire cover 22.

Preferably, as shown in Fig. 3, Fig. 4 and Fig. 7, the outer edge of the retaining ring 4 is pressed and positioned between the inner side wall of the outer ring air groove 21 and the inner side wall of the outer ring cover, so as to facilitate Its installation and disassembly are clean.

Specifically, as shown in FIGS. 3 and 4 , the inner ring air channel 3 includes: an inner ring air groove 31 with an upper end opening, and the inner nozzle of the connecting pipe 5 is in contact with the outer wall of the inner ring air groove 31 . Connect; and the inner ring fire cover 32, the cover is mounted on the upper opening of the inner ring air groove 31, and the inner combustion hole 321 is opened on the upper surface of the inner ring fire cover 32.

Certainly, interior combustion hole 321 also can be offered on the side wall of inner ring fire cover 32, and outer combustion hole 221 also can be opened on the side wall of outer ring fire cover 21, all can realize the purpose of this application, and its purpose is Deviate from the design concept of the present utility model, which will not be repeated here, but should belong to the protection scope of the present application.

It should be noted that, as shown in FIG. 3 and FIG. 4 , the outer ring air groove 21 , the connecting pipe 5 and the inner ring air groove 31 are of an integrated structure.

The one-piece structure can reduce the number of parts of the burner, thereby improving the assembly efficiency of the burner and facilitating production. It should be noted that the outer ring air groove, the connecting pipe and the inner ring air groove of the integrated structure are the gas distribution plate 6 .

As shown in FIG. 5 to FIG. 7 , an embodiment of another aspect of the present invention provides a gas stove 7 , including the burner 1 of the gas stove described in any one of the above-mentioned embodiments.

The gas stove 7 provided by the utility model can effectively reduce the emission of nitrogen oxides in the gas combustion process, make the use of the gas stove more environmentally friendly and healthy, and conform to the design concept of modern technology.

In summary, the burner 1 of the gas stove provided by the utility model can reduce the amount of nitrogen oxides generated when the gas is burned at the outer combustion hole, prevent the content of nitrogen oxides in the flue gas from exceeding the standard, and effectively prevent consumers from using When using a gas stove, too much harmful gas is inhaled, which better meets the design requirements of environmental protection and health.

It should be noted that the arrows in the drawings indicate the flow direction of the secondary air.

In the description of the present utility model, the terms "installation", "connection", "connection", "fixation" and so on should be understood broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integrated ground connection; it can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present application. Novel at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. A burner for a gas range, characterized in that it comprises: The outer ring air channel has outer combustion holes in its upper part; an inner ring air passage, located inside the outer ring air passage, and spaced apart from the outer ring air passage to form an annular air passage, and the upper part of the inner ring air passage has internal combustion holes; and The retaining ring is located between the outer ring air channel and the inner ring air channel, and its outer edge is connected to the middle or upper part of the inner wall of the outer ring air channel, and its inner edge is connected to the inner wall of the inner ring air channel. The outer walls are spaced apart. 2. The burner of the gas stove according to claim 1, characterized in that, The outer edge of the retaining ring is connected to the middle part of the inner side wall of the outer ring airway, and the inner edge is spaced apart from the outer side wall of the inner ring airway. 3. The burner of the gas stove according to claim 2, characterized in that, The width of the retaining ring is 4-8mm. 4. The burner of the gas stove according to any one of claims 1 to 3, further comprising: A connecting pipe is located between the outer ring air channel and the inner ring air channel and communicates with the outer ring air channel and the inner ring air channel. 5. The burner of the gas stove according to claim 4, characterized in that, The connecting pipes include a plurality of connecting pipes arranged at intervals along the circumferential direction. 6. The burner of the gas stove according to claim 4, characterized in that, the outer ring air passage comprises: The outer ring air groove is opened at the upper end, and the outer nozzle of the connecting pipe is connected with the inner side wall of the outer ring air groove; and The outer ring fire cover is installed at the upper opening of the outer ring air groove, and the outer combustion hole is opened on the upper surface of the outer ring fire cover. 7. The burner of the gas stove according to claim 6, characterized in that, The outer edge of the retaining ring is positioned between the inner sidewall of the outer ring air groove and the inner sidewall of the outer ring cover. 8. The burner of the gas stove according to claim 6, characterized in that, the inner ring air passage comprises: The inner ring air groove is opened at the upper end, and the inner nozzle of the connecting pipe is connected with the outer wall of the inner ring air groove; and The inner ring fire cover is installed at the upper opening of the inner ring air groove, and the inner combustion hole is opened on the upper surface of the inner ring fire cover. 9. The burner of the gas stove according to claim 8, characterized in that, The outer ring air groove, the connecting pipe and the inner ring air groove are of an integrated structure. 10. A gas cooker, characterized by comprising the burner of the gas cooker according to any one of claims 1-9.