CN218095931U - Burners for gas water heaters and gas water heaters - Google Patents

Abstract

The utility model belongs to the technical field of gas heater, a combustor and gas heater for gas heater is specifically provided. The utility model discloses aim at solving current gas heater's the inhomogeneous problem of combustor burning. The utility model comprises a burner body, a stable combustion rectification and flame orifice plate, wherein the burner body is provided with an air inlet and an air outlet; the combustion stabilizing rectifying plate is arranged at the air outlet and provided with a left area, a middle area and a right area, the left area is provided with a left rectifying hole group, the middle area is provided with a middle rectifying hole group, and the right area is provided with a right rectifying hole group; the left rectifying hole group, the middle rectifying hole group and the right rectifying hole group are used for uniformly distributing gas in the combustor body to the gas outlet; the flame orifice plate is arranged on the upper side of the combustion stabilizing flow plate and is used for receiving the gas distributed by the combustion stabilizing flow plate. The utility model discloses improve the burning operating mode of current combustor, promoted the combustion performance of combustor.

Description

Burners for gas water heaters and gas water heaters

technical field

The utility model belongs to the technical field of gas water heaters, and specifically provides a burner for a gas water heater and a gas water heater.

Background technique

At present, most of the gas water heaters on the market use atmospheric burners with partial premixed combustion methods, also known as fire row. The high-speed flowing gas is injected from the distributor, and the air is introduced into the burner chamber and mixed with the gas, and flows into the flame hole of the burner through the mixing chamber to decelerate the partial pressure and ignite the gas.

When subjected to changes in air quality, air pressure, wind pressure, altitude, etc., the combustion status of the atmospheric burner is unstable, and bad combustion conditions such as flashback, flame departure, flameout, and yellow flame are prone to occur, and flame separation, yellow flame, and flameout will increase. Emissions of pollutants such as CO and nitrogen oxides. The tempering of the gas will damage the burner head and affect the service life of the water heater. The instability of gas combustion will also cause the water heater to generate combustion noise during use, and affect the local water temperature to be too high, which affects the user's bathing experience from the perspective of noise and constant temperature.

Therefore, there is a need for a structure that can enable the burner to burn fully and evenly, so as to increase the service life of the gas water heater, thereby increasing the user experience.

Utility model content

One purpose of the utility model is to solve the problem of uneven combustion of the burner of the existing gas water heater.

To achieve the above purpose, the utility model provides a burner for a gas water heater, comprising:

A burner body, the burner body is provided with an air inlet and an air outlet;

Stable combustion rectification plate, the combustion stabilization rectification plate is arranged at the air outlet, the combustion stabilization rectification plate has a left area, a middle area and a right area, the left area has a left rectification hole group, the The middle area has a middle straightening hole group, and the right side has a right straightening hole group; the left side straightening hole group, the middle straightening hole group and the right straightening hole group are used for the burner The gas in the body is evenly distributed to the gas outlet;

A flame orifice plate, the flame orifice plate is arranged on the upper side of the combustion stabilizing rectifying plate and is used for receiving the gas distributed by the combustion stabilizing rectifying plate.

Further, the burner body includes a main injection port and a secondary injection port, both of which are located on the side of the combustion stabilizing straightening plate away from the gas outlet;

the main injection port is aligned with a right portion of the middle region and the right region;

The sub injection port is aligned with a left portion of the middle area and the left area.

Further, the area ratio of the left area, the middle area and the right area is 2:3:6.

Further, the area ratio of the left rectification hole group, the middle rectification hole group and the right rectification hole group is 3:8:8.

Further, the left rectification hole group includes a plurality of first left rectification holes, a plurality of second left rectification holes and a plurality of third left rectification holes distributed in sequence from left to right, the second left The cross-sectional area of the rectifying holes in the side rectifying holes is the largest, the cross-sectional area of the first left rectifying hole is next, and the cross-sectional area of the rectifying holes of the third left rectifying hole is the smallest; The interval between the two left rectifying holes is greater than the interval between the plurality of first left rectifying holes, and greater than the interval between the plurality of third left rectifying holes.

Further, the group of intermediate rectification holes includes a plurality of intermediate rectification holes, and the intervals and diameters of the plurality of intermediate rectification holes are the same.

Further, the right rectification hole group includes a plurality of first right rectification holes, a plurality of second right rectification holes and a plurality of third right rectification holes distributed in sequence from left to right, the first right The areas of the side rectification holes, the second right rectification holes and the third right rectification holes decrease sequentially; and the plurality of first right rectification holes, the plurality of second right rectification holes and The intervals between the plurality of third right rectifying holes decrease sequentially.

Further, the widths of the rectification holes corresponding to the left rectification hole group, the middle rectification hole group and the right rectification hole group are the same as each other.

Further, the burner body also includes: a housing, the housing includes a first housing and a second housing; an injection channel formed in the housing, and the injection channel contains an injection channel One end of the injection channel communicates with the air inlet; a mixing chamber formed in the housing, the other end of the injection channel communicates with the mixing chamber, and the mixing chamber communicates with the main The injection port communicates with the secondary injection port, and the mixing chamber is used for fully mixing the gas injected from the ejector with air.

Further, the mixing chamber includes a main mixing chamber and a sub-mixing chamber; the main mixing chamber is set in a C shape, the sub-mixing chamber is formed on the upper left of the main mixing chamber, and the main mixing chamber and the sub-mixing chamber They are respectively communicated with the injection channel; the main mixing chamber is communicated with the main injection port; and the secondary mixing chamber is communicated with the secondary injection port.

Further, a plurality of flame distribution hole groups are evenly distributed on the orifice plate; and/or, the cross section of the orifice plate is V-shaped.

Further, the gas water heater includes the burner.

Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solution of the utility model, by dividing the combustion stabilization rectifying plate of the burner into the left area, the middle area and the right area, and the three areas A plurality of rectifying hole groups are arranged in each center to distribute the gas in the burner body evenly to the gas outlet of the burner body, so as to achieve the effect of isobaric exhaust flow, and then make the mixed gas in the burner fully and evenly Combustion can effectively prevent the flame-leaving problem caused by excessive local air velocity at the flame orifice plate, and increase the combustion stability of the burner.

Furthermore, by aligning the main injection port and the secondary injection port on the burner body with different areas of the combustion stabilization rectification plate, the gas in the mixing chamber can be evenly distributed to the combustion stabilization rectification plate to improve the efficiency of gas combustion. stability.

Further, the distribution and area of the rectification holes in different regions on the stable combustion rectification plate are different, which effectively prevents the excessive air velocity at the local fire distribution holes, so that the flame can be kept in a stable laminar flow, and thus effectively It solves the problem of combustion noise caused by unstable turbulent flames. At the same time, the setting of the stable combustion rectification plate also enables the formation of a uniform temperature field at the flame orifice, effectively reducing the generation of pollutants.

Description of drawings

In order to illustrate the technical solution of the utility model more clearly, some embodiments of the utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the components or parts indicated by the same reference number in different drawings are the same or similar; the drawings of the present utility model are not necessarily drawn to scale. In the attached picture:

Fig. 1 is the structural representation of the burner in some embodiments of the utility model;

Fig. 2 is an exploded view of the structure of the burner in Fig. 1;

Fig. 3 is a side view of the burner in Fig. 1;

Fig. 4 is a sectional view of the burner in Fig. 3 along the A-A direction;

Fig. 5 is a schematic structural view of the burner body in Fig. 1;

Fig. 6 is a first axial side view of the stable combustion rectification structure in Fig. 1;

Fig. 7 is a second axial side view of the stable combustion rectification structure in Fig. 1;

Fig. 8 is a side view of the stable combustion rectification structure in Fig. 7;

Fig. 9 is a cross-sectional view of the stable combustion rectification structure in Fig. 8 along the B-B direction;

Fig. 10 is a schematic structural view of the flame stabilizing rectifying plate in Fig. 7;

Fig. 11 is the structural representation of the flame hole plate among Fig. 7;

Fig. 12 is a structural schematic diagram of gas flow in the burner in Fig. 1 .

detailed description

It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present utility model, rather than all embodiments of the present utility model, and this part of embodiments is intended to explain the technical principle of the present utility model , are not intended to limit the protection scope of the present utility model. Based on the embodiments provided by the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts should still fall within the protection scope of the present utility model.

It should be noted that, in the description of the present utility model, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", Terms indicating directions or positional relationships such as "inside" and "outside" are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, Constructed and operative in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present utility model, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can also be an internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

The burners in some embodiments of the present utility model will be described in detail below with reference to FIGS. 1 to 12 . Wherein, Fig. 1 is a schematic structural view of the burner in some embodiments of the present utility model; Fig. 2 is an exploded view of the structure of the burner in Fig. 1; Fig. 3 is a side view of the burner in Fig. 1; Fig. 4 is a diagram 3 is a cross-sectional view of the burner along the A-A direction; Fig. 5 is a schematic structural view of the burner body in Fig. 1; Fig. 6 is a first axial side view of the combustion stabilization rectification structure in Fig. 1; Fig. 7 is a The second axial side view of the stable combustion rectification structure; Fig. 8 is a side view of the stable combustion rectification structure in Fig. 7; Fig. 9 is a sectional view of the stable combustion rectification structure in Fig. 8 along the B-B direction; Fig. 10 is the Schematic diagram of the structure of the stable combustion rectifier;

Fig. 11 is a schematic structural diagram of the flame orifice plate in Fig. 7; Fig. 12 is a schematic structural diagram of gas flow in the burner in Fig. 1 .

What needs to be explained before is that, for the convenience of description, and in order to enable those skilled in the art to quickly understand the technical solution of the utility model, only the technical problems and/or technical ideas to be solved in the utility model are related to the following. The technical features that are relatively strong (directly or indirectly related) will be described, and the technical features that are weakly related to the technical problems and/or technical concepts to be solved by the utility model will not be described in detail. Since the weakly related technical features belong to common knowledge in the field, even if the utility model does not describe the weakly related features, the disclosure of the utility model will not be insufficient.

As shown in Figures 1 to 3, in some embodiments of the present utility model, the burner 100 includes a burner body 1 and a stable combustion rectification structure 3, and the stable combustion rectification structure 3 is detachably mounted on the burner body 1, The combustion stabilization rectification structure 3 is used to burn the mixed gas injected from the burner body 1 .

Continue referring to FIG. 1 to FIG. 5 , the burner body 1 in the present invention includes a casing 11 , an air inlet 13 and an air outlet 15 . The air inlet 13 is formed on the right side of the housing 11 , and the air outlet 15 is formed above the housing 11 . The combustion stabilizing rectification structure 3 is arranged at the gas outlet 13 .

Continue referring to FIG. 1 to FIG. 5 , the housing 11 in the present invention includes a first housing 111 and a second housing 113 . The first housing 111 and the second housing 113 are fixedly connected to define an injection channel 115 and a mixing chamber 117 .

Continuing to refer to FIG. 4 , the ejector 1151 is accommodated in the ejector channel 115 in the present invention, and the ejector 1151 is used to eject the gas introduced by the air inlet 13 into the mixing chamber 117 .

Further, the cross-sectional area of the air inlet 13 in the present invention is larger than that of the injection channel 115, which is beneficial for the burner body 1 to provide a large amount of gas for the ejector 1151. At the same time, the cross-sectional area of the mixing chamber 117 Larger than the cross-sectional area of the injection channel 115, it is beneficial to the rapid diffusion and mixing of gas and air.

Continue referring to FIG. 1 to FIG. 5 , the mixing chamber 117 in the present invention is formed in the casing 11 , and the mixing chamber 117 includes a main mixing chamber 1171 , a secondary mixing chamber 1173 , a main injection port 1175 and a secondary injection port 1177 .

Continue to refer to Fig. 1 to Fig. 5, one end of the main mixing chamber 1171 in the utility model communicates with the injection channel 115, and the other end of the main mixing chamber 1171 communicates with the main injection port 1175, and the main injection port 1175 is located at the main mixing chamber 1171 The top is away from the side of the air outlet 15.

Further, in order to uniformly inject the gas in the main mixing chamber 1171 into the combustion-stabilizing rectification structure 3, those skilled in the art can set the main mixing chamber 1171 as an S-shaped or any other feasible structure according to needs. Preferably, this The utility model sets the main mixing chamber 1171 as a C-type.

Continue to refer to Fig. 1 to Fig. 5, the sub-mixing chamber 1173 in the utility model is formed on the upper left side of the main mixing chamber 1171, one end of the sub-mixing chamber 1173 communicates with the injection channel 115, and the other end of the sub-mixing chamber 1173 communicates with the sub-injection port 1177 communicates, and the secondary injection port 1177 is located above the main mixing chamber 1171 on the side away from the air outlet 15 .

Further, the thickness of the material at different positions of the main mixing chamber 1171 in the present invention is different. Specifically, the closer the main mixing chamber 1171 is to the injection port, the thicker the main mixing chamber 1171 is, which is beneficial to prevent the temperature at the flame orifice plate 31 from being too high and the material of the mixing chamber 117 being deformed.

Continuing to refer to FIG. 1 to FIG. 5 , the air inlet 13 in the present invention is formed on the right side of the casing 11 , and the air inlet 13 is used to introduce the air outside the casing 11 into the inside of the casing 11 . The gas outlet 15 is formed above the casing 11 , and the mixed gas in the casing 11 can be ejected from the gas outlet 15 .

Continue to refer to FIG. 1 to FIG. 9 , the stable combustion rectification structure 3 in the utility model is arranged at the gas outlet 15 , and the stable combustion rectification structure 3 includes a flame hole plate 31 , a stable combustion rectification plate 33 and a gas distribution chamber 35 . The stable combustion rectifying plate 33 evenly distributes the gas in the burner body 1 to the gas outlet 15. The flame orifice plate 31 is arranged on the upper side of the combustion stabilizing rectifying plate 33. The flame orifice plate 31 is used to receive the stable combustion rectifying plate 33 to distribute A gas distribution cavity 35 is formed between the flame orifice plate 31 and the flame stabilizing rectifying plate 33 .

Continuing to refer to Fig. 11, there are a plurality of fire distribution hole groups 311 evenly distributed on the flame hole plate 31 in the present invention, specifically, each fire distribution hole group 311 has fire distribution holes 3111 with different areas, and each The widths of the fire distribution holes 3111 are the same. Preferably, the shape of the cross section of the flame orifice plate 31 of the present invention is V-shaped.

Continuing to refer to FIG. 10 , the flame stabilizing rectifying plate 33 in the present invention has a left area 331 , a middle area 333 and a right area 335 . The main injection port 1175 is aligned with the right part of the middle area 333 and the right side area 335, so that the gas in the main mixing chamber 1171 is evenly injected onto the combustion stabilization rectifying plate 33 through the main injection port 1175; the secondary injection port 1177 is aligned with the The left part of the middle area 333 is aligned with the left area 331, so that the gas in the secondary mixing chamber 1173 can be evenly sprayed onto the combustion stabilization rectifying plate 33 through the secondary injection port 1177, thereby achieving the effect of equal pressure exhaust, effectively It prevents the flame-leaving problem caused by the excessive local air velocity in the flame hole, and increases the stability of combustion.

Continuing to refer to Fig. 10, the left area 331 in the present invention has a left side rectification hole group 3311, and the left side rectification hole group 3311 includes a plurality of first left rectification holes 33111, a plurality of second left side rectification holes distributed sequentially from left to right. The left rectifying hole 33113 and a plurality of third left rectifying holes 33115 . Among them, the cross-sectional area of the rectifying hole in the second left rectifying hole 33113 is the largest, the cross-sectional area of the first left rectifying hole 33111 is next, and the cross-sectional area of the rectifying hole in the third left rectifying hole 33115 is the smallest; and more The intervals between the second left rectification holes 33113 are greater than the intervals between the first left rectification holes 33111 and the intervals between the third left rectification holes 33115 .

Preferably, the length of the first left rectifying hole 33111 in the present invention is 5mm. Further preferably, the number of the first left rectifying holes 33111 is three.

Further preferably, the length of the second left rectifying hole 33113 in the present invention is 6mm. Further preferably, the number of the second left rectifying holes 33113 is three.

Further preferably, the length of the third left rectification hole 33115 in the present invention is 3mm. Further preferably, the number of the second left rectifying holes 33113 is four.

Continuing to refer to FIG. 10 , the middle area 333 in the present invention has a middle rectification hole group 3331 , and the middle rectification hole group 3331 includes a plurality of middle rectification holes 33311 , and the intervals and apertures between the plurality of middle rectification holes 33311 are the same.

Preferably, the middle rectifying hole 33311 in the present invention has a length of 6mm. Further preferably, the number of the first left rectifying holes 33111 is 20.

Continuing to refer to Fig. 10, the right area 335 in the present invention has a right rectification hole group 3351, and the right rectification hole group 3351 includes a plurality of first right rectification holes 33511, a plurality of second rectification holes distributed in sequence from left to right. The right rectification hole 33513 and a plurality of third right rectification holes 33515. Among them, the areas of the first right rectification hole 33511, the second right rectification hole 33513 and the third right rectification hole 33515 decrease successively; and the multiple first right rectification holes 33511, the multiple second right rectification holes The intervals between 33513 and the plurality of third right rectifying holes 33515 decrease successively.

Preferably, the length of the first right rectifying hole 33511 in the present invention is 4mm. Further preferably, the number of the first right rectifying holes 33511 is set to 12.

Further preferably, the length of the second right rectification hole 33513 in the present invention is 3 mm. Further preferably, the number of the second right rectifying holes 33513 is ten.

Further preferably, the length of the third right rectifying hole 33515 in the present invention is 2mm. Further preferably, the number of the third right rectifying holes 33515 is 23.

Further, in the present invention, the area ratio of the left area 331 , the middle area 333 and the right area 335 is 2:3:6.

Furthermore, the area ratio of the left rectification hole group 3311, the middle rectification hole group 3331 and the right rectification hole group 3351 in the present invention is 3:8:8.

Further, in the present invention, the widths of the rectification holes corresponding to the left rectification hole group 3311 , the middle rectification hole group 3331 and the right rectification hole group 3351 are the same as each other.

Further, among the left area 331, the middle area 333 and the right area 335 in the present invention, the length of the rectification holes in the middle area 333 is the longest, and the distance between the rectification holes in the middle area 333 is shorter than that in the left area 331. , the rectifying holes in the middle area 333 and the right area 335 have the smallest interval between the rectifying holes, because the left side of the mixing chamber 117 is narrow, and the velocity of the injected mixed gas is relatively large, therefore, in the left area 331 The intervals between the plurality of rectification holes are larger than those in other regions, and the number of rectification holes in the left region 331 is smaller than that in other regions.

Referring to Fig. 12, the working principle of the burner 100 is briefly described below:

The burner 100 injects the gas and air from the air inlet 13 into the mixing chamber 117 through the injector 1151 to form a mixed airflow, which is fully mixed in the main mixing chamber 1171 and the secondary mixing chamber 1173, and the main injection port 1175 and auxiliary injection ports 1177 are injected onto the combustion stabilization rectification plate 33, and the combustion stabilization rectification plate 33 evenly distributes the mixed gas to the flame hole plate 31 for ignition and combustion.

Those skilled in the art can understand that the utility model divides the combustion stabilization rectifying plate 33 of the burner 100 into a left area 331, a middle area 333 and a right area 335, and multiple rectifying plates are provided in each of the three areas. group of holes, so that the gas in the burner body 1 can be evenly distributed to the gas outlet 15 of the burner body 1, so as to achieve the effect of isobaric exhaust flow, and then the mixed gas in the burner 100 can be fully and evenly burned, effectively The combustion stability of the burner 100 is increased by preventing the flame-leaving problem at the flame orifice plate 31 caused by excessive local air velocity.

Further, the main injection port 1175 and the secondary injection port 1177 on the burner body 1 are aligned with different areas of the combustion stabilization rectification plate 33, further enabling the gas in the mixing chamber 117 to be evenly distributed to the combustion stabilization rectification plate 33 , Improve the stability of gas combustion.

Further, the distribution and area of the rectifying holes in different regions on the stable combustion rectifying plate 33 are different, effectively preventing the airflow velocity at the local ignition hole 3111 from being too large, so that the flame can be kept in a stable laminar flow, and then effectively solve the problem of Combustion noise caused by unstable turbulent flames, and at the same time, the setting of the stable combustion rectifying plate 33 enables the formation of a uniform temperature field at the flame orifice plate 31, effectively reducing the generation of pollutants.

So far, the technical solution of the utility model has been described in conjunction with the foregoing embodiments, but those skilled in the art can easily understand that the protection scope of the utility model is not limited to these specific embodiments. Without departing from the technical principles of the present utility model, those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and/or technical principles of the present invention will fall within the protection scope of the present utility model.

Claims (12)

1. A burner for a gas water heater, comprising:

the burner comprises a burner body, wherein an air inlet and an air outlet are formed in the burner body;

the gas outlet is provided with a gas inlet, the gas inlet is provided with a gas inlet hole group, the gas outlet hole group is arranged in the gas inlet hole group, the gas inlet hole group is arranged in the gas inlet hole group, and the gas outlet hole group is arranged in the gas outlet hole group; the left rectifying hole group, the middle rectifying hole group and the right rectifying hole group are used for uniformly distributing gas in the combustor body to the gas outlet;

the flame orifice plate is arranged on the upper side of the combustion stabilizing flow plate and is used for receiving the gas distributed by the combustion stabilizing flow plate.

2. Burner for gas water heaters according to claim 1,

the burner body comprises a main injection port and an auxiliary injection port, and the main injection port and the auxiliary injection port are both positioned on one side of the combustion stabilizing rectifying plate away from the gas outlet;

the main ejection port is aligned with a right portion of the middle region and the right region;

the sub ejection port is aligned with a left portion of the middle region and the left region.

3. Burner for gas water heaters according to claim 2,

the area ratio of the left side region, the middle region, and the right side region is 2.

4. Burner for gas water heaters according to claim 2,

the area ratio of the left rectifying hole group, the middle rectifying hole group and the right rectifying hole group is 3.

5. Burner for gas water heaters according to claim 1,

the left rectifying hole group comprises a plurality of first left rectifying holes, a plurality of second left rectifying holes and a plurality of third left rectifying holes which are distributed from left to right in sequence,

the cross-sectional area of the rectifying hole in the second left rectifying hole is the largest, the cross-sectional area of the rectifying hole in the first left rectifying hole is the next largest, and the cross-sectional area of the rectifying hole in the third left rectifying hole is the smallest; and is

The second left-hand rectification holes are spaced apart from one another by a distance greater than the first left-hand rectification holes and greater than the third left-hand rectification holes.

6. Burner for gas water heaters according to claim 1,

the middle rectifying hole group comprises a plurality of middle rectifying holes, and the intervals and the hole diameters of the middle rectifying holes are the same.

7. Burner for gas water heaters according to claim 1,

the right rectifying hole group comprises a plurality of first right rectifying holes, a plurality of second right rectifying holes and a plurality of third right rectifying holes which are distributed from left to right in sequence,

the areas of the first right trim orifice, the second right trim orifice and the third right trim orifice decrease in sequence; and is provided with

The first right-hand fairing holes, the second right-hand fairing holes and the third right-hand fairing holes are arranged at decreasing distances from one another in succession.

8. Burner for gas water heaters according to any of the claims 1 to 7,

the widths of the rectifying holes corresponding to the left rectifying hole group, the middle rectifying hole group and the right rectifying hole group are the same.

9. Burner for gas water heaters according to claim 2,

the burner body further comprises:

a housing comprising a first housing and a second housing;

the injection passage is formed in the shell, an injector is accommodated in the injection passage, and one end of the injection passage is communicated with the air inlet;

the mixing cavity is formed in the shell, the other end of the ejector channel is communicated with the mixing cavity, the mixing cavity is communicated with the main jet orifice and the auxiliary jet orifice, and the mixing cavity is used for fully mixing the gas ejected from the ejector with air.

10. Burner for gas water heaters according to claim 9,

the mixing cavity comprises a main mixing cavity and an auxiliary mixing cavity;

the main mixing cavity is C-shaped, the auxiliary mixing cavity is formed at the left upper part of the main mixing cavity, and the main mixing cavity and the auxiliary mixing cavity are respectively communicated with the injection channel;

the main mixing cavity is communicated with the main injection port;

the secondary mixing chamber is in communication with the secondary jet orifice.

11. Burner for gas water heaters according to claim 1,

a plurality of fire distribution hole groups are uniformly distributed on the flame hole plate; and/or the like and/or,

the cross section of the flame orifice plate is V-shaped.

12. A gas water heater is characterized in that a water inlet pipe is arranged on the water inlet pipe,

the gas water heater comprising the burner of any one of claims 1-11.

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