CN220303640U - Burner and gas water heater - Google Patents

Abstract

The utility model discloses a combustor and a gas water heater. The burner comprises a plurality of fire rows, a plurality of fire rows are arranged side by side, a diffusion flow passage, a flow dividing groove and an air outlet cavity are arranged in the fire rows, the diffusion flow passage, the flow dividing groove and the air outlet cavity are sequentially communicated, a first inclined surface is arranged on the lower surface of the tail end of the diffusion flow passage, a second inclined surface is arranged on the lower surface of the flow dividing groove adjacent to the first inclined surface, and the first inclined surface and the second inclined surface extend upwards in an inclined manner towards the uniform direction along the air flow direction; the top of fire row is provided with a plurality of ventholes, the venthole intercommunication the cavity of giving vent to anger, the import of diffusion runner is the air inlet. The uniformity of the distribution of the gas discharged by the burner is improved, so that the combustion sufficiency of the gas is improved.

Description

Burner and gas water heater

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a combustor and a gas water heater.

Background

At present, the water heater is a household appliance commonly used in daily life of people. The water heater is classified into a gas water heater, an electric water heater, and the like, wherein the gas water heater is widely used because of its convenient use. Conventional gas water heaters typically include a fan, a fire grate, a burner, a combustion chamber, and a heat exchanger, where the burner combusts gas within the combustion chamber to heat water flowing through the heat exchanger.

The burner is an important component of a gas water heater and generally comprises a plurality of fire rows arranged side by side, and in use, the gas and primary air enter the fire rows to mix and eventually to the gas outlet holes for ignition combustion. Referring to fig. 14, it can be seen that in the use process of the conventional fire grate, the airflow forms vortex groups (position a and position B in fig. 14) at the end of the diffusion flow channel and the end of the diversion channel, the vortex groups at position a occupy a certain space inside the fire grate, which affects the efficiency and uniformity of mixing the fuel gas and air, the vortex groups at position B affect the vertical degree of the airflow in the fire holes above, and the risk of burning the wall surface of the flame is increased, resulting in poor sufficiency of burning the fuel gas by the burner.

In view of this, how to design a technology for improving the distribution uniformity of the discharged gas to improve the combustion sufficiency of the gas is a technical problem to be solved by the present utility model.

Disclosure of Invention

The utility model provides a combustor and a gas water heater, which can improve the distribution uniformity of gas discharged from the combustor so as to improve the combustion sufficiency of the gas.

In order to achieve the technical purpose, the utility model is realized by adopting the following technical scheme:

in one aspect, the utility model provides a burner, which comprises a plurality of fire rows, wherein a plurality of fire rows are arranged side by side, a diffusion flow passage, a flow dividing groove and an air outlet cavity are arranged in each fire row, the diffusion flow passage, the flow dividing groove and the air outlet cavity are sequentially communicated, a first inclined surface is arranged on the lower surface of the tail end of the diffusion flow passage, a second inclined surface is arranged on the lower surface of the flow dividing groove adjacent to the first inclined surface, and the first inclined surface and the second inclined surface extend upwards in an inclined manner towards a uniform direction along the air flow direction; the top of fire row is provided with a plurality of ventholes, the venthole intercommunication the cavity of giving vent to anger, the import of diffusion runner is the air inlet.

Compared with the prior art, the utility model has the advantages and positive effects that: the design of two inclined planes can make gas component distribution more even and the also effectual even optimization of air current speed, through confirming the terminal angle of diffusion section and the corresponding relation of splitter box lower extreme angle, effectively solve the inhomogeneous problem of component distribution, it is showing to improve component distribution uniformity effect, make venthole mixed gas's component, speed homogeneity higher, flame stability is higher, can effectively promote gas heater work efficiency, simultaneously, can effectively reduce the flame height when burning, and then reduce the combustion chamber height, reduce the volume of combustor, realize improving combustor fire and arrange gas distribution homogeneity and in order to improve gas combustion sufficiency.

In an embodiment of the present application, an inclination angle of the first inclined surface is not smaller than an inclination angle of the second inclined surface.

In an embodiment of the present application, a ratio of the inclination angle of the first inclined surface to the inclination angle of the second inclined surface is 0.5C 1.0.

In an embodiment of the present application, the inclination angle of the first inclined plane is 11 degrees to 14 degrees, and the inclination angle of the second inclined plane is 22 degrees to 24 degrees.

In an embodiment of the present application, the air inlet of the diffusion flow passage is of a flare structure.

In another aspect, the present utility model provides a gas water heater comprising:

a combustion chamber;

the burner is adopted and is arranged in the combustion chamber;

the gas supply pipe is provided with a plurality of gas nozzles, the gas supply pipe is arranged in the combustion chamber, and the gas nozzles are arranged opposite to the fire row corresponding to the water heater;

and the fan is arranged on the combustion chamber.

In an embodiment of the application, a partition board arranged vertically is arranged in the combustion chamber, a plurality of ventilation openings are formed in the partition board, a first ventilation board is arranged on one side of the partition board, a second ventilation board is arranged on the other side of the partition board, a plurality of first ventilation holes are formed in the first ventilation board, a plurality of second ventilation holes are formed in the second ventilation board, the second ventilation board is located below the ventilation openings, the first ventilation board is located above the ventilation openings, the first ventilation board is located at the bottom of the combustion chamber, a first air inlet cavity is formed in the other side of the partition board, and the second ventilation board is located at the bottom of the combustion chamber, and a second air inlet cavity is formed in one side of the partition board;

the gas inlet of the burner is connected with the corresponding ventilation opening, the gas supply pipe is positioned below the first ventilation plate, the gas nozzle is arranged opposite to the corresponding ventilation opening, and the partition plate is positioned between the burner and the gas supply pipe;

the fan comprises a first fan and a second fan, wherein the first fan is connected with the first air inlet cavity, and the second fan is connected with the second air inlet cavity.

In an embodiment of the present application, the air flow output by the first fan enters the air inlet to form primary air, the air flow output by the second fan passes through the second ventilation hole to form secondary air, and the air flow output by the first fan enters the first ventilation hole to form tertiary air.

In an embodiment of the present application, the second fan and the first fan are arranged side by side in a front-rear direction of the gas water heater.

In an embodiment of the present application, the opening ratio of the second ventilation board is greater than the opening ratio of the first ventilation board.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a gas water heater according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial structure of an embodiment of a gas water heater according to the present utility model;

FIG. 3 is a second schematic diagram of a gas water heater according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partially enlarged schematic illustration of region B of FIG. 4;

FIG. 6 is a partial cross-sectional view of an embodiment of a gas water heater of the present utility model;

FIG. 7 is an enlarged partial schematic view of region C of FIG. 6;

FIG. 8 is a partially enlarged schematic illustration of region D of FIG. 6;

FIG. 9 is a second schematic partial structure of an embodiment of the gas water heater of the present utility model;

FIG. 10 is a third schematic view of a partial structure of an embodiment of the gas water heater of the present utility model;

FIG. 11 is a schematic view of a fire grate in another embodiment of the gas water heater of the present utility model;

FIG. 12 is a cross-sectional view of a fire grate in another embodiment of the gas water heater of the present utility model;

FIG. 13 is a simulated view of the airflow from the fire grate of FIG. 11;

fig. 14 is a simulated view of the airflow of a conventional fire exhaust.

Reference numerals illustrate:

a housing 1;

a burner 2, a fire grate 21;

the diffuser comprises a diffuser flow channel 211, a diversion channel 212, an air outlet cavity 213, a first inclined surface 201 and a second inclined surface 202;

a heat exchanger 3;

the combustion chamber 4, the partition 41, the first ventilation plate 42, the second ventilation plate 43, the first plate 44, the second plate 45, and the third plate 46;

the first vent 421, the upper flange 422, the outer flange 423, the third vent 424, the second vent 431, the outer flange 441, the lower flange 442, the fourth vent 443;

fan 5, first fan 51, second fan 52;

a gas supply pipe 6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The gas water heater adopts gas as main energy material, and the high temperature heat generated by combustion of the gas is transferred to cold water flowing through a heat exchanger to achieve the purpose of preparing hot water.

Gas water heaters typically include a housing, and a burner, heat exchanger, fan, and fan housing disposed within the housing.

The gas is conveyed to the burner, and is ignited by the ignition device, so that the burner combusts the conveyed gas, and heat is further generated.

The heat exchanger is internally provided with a heat exchange tube, one end of the heat exchange tube is communicated with a water supply pipeline, and the other end of the heat exchange tube is communicated with a shower head or a tap.

The heat generated by the combustion of the fuel gas by the burner is used for heating the heat exchange tube so as to raise the water temperature in the heat exchange tube to form hot water.

When the gas water heater works, cold water provided by the water supply pipeline flows into the heat exchange pipe, is heated into hot water by the heating source generated by the burner, and flows out of the shower head or the water tap through the hot water valve for users to use.

Meanwhile, in the operation of the gas water heater, the fans are electrified and run simultaneously, and under the action of the fans, the flue gas generated by the burner is discharged outdoors.

An embodiment, as shown in fig. 1 to 10, provides a gas water heater, which at least includes: a shell 1, a burner 2, a heat exchanger 3, a combustion chamber 4, a fan 5 and a fuel gas supply pipe 6.

A combustion chamber 4, a heat exchanger 3 and a burner 2 are arranged in the housing 1, the burner 2 is arranged at the bottom of the combustion chamber 4, an air inlet is arranged on the burner 2, and the burner 2 is used for combusting fuel gas; the heat exchanger 3 is arranged at the top of the combustion chamber 4, and the gas supply pipe 6 is provided with a plurality of gas nozzles on the gas supply pipe 6, the gas supply pipe 6 extending into the combustion chamber 4 and delivering gas through the gas nozzles via the gas inlet to the burner 2.

Wherein the proportion of secondary air is conveniently adjusted for precisely controlling the supply amounts of primary air and secondary air. The blower 5 includes a first blower 51 and a second blower 52 to constitute a blower assembly by the first blower 51 and the second blower 52. The first fan 51 is used for outputting air flow to form primary air and enabling the primary air and the fuel gas to enter the combustor 2 for mixing, and the second fan 52 is used for outputting air flow to directly enter a combustion cavity of the combustion chamber for forming secondary air to assist combustion.

Correspondingly, a partition board 41 which is vertically arranged is arranged in the combustion chamber 4, a plurality of ventilation openings (not marked) are arranged on the partition board 41, a first ventilation board 42 is arranged on one side of the partition board 41, a second ventilation board 43 is arranged on the other side of the partition board 41, a plurality of first ventilation holes 421 are arranged on the first ventilation board 42, a plurality of second ventilation holes 431 are arranged on the second ventilation board 43, the second ventilation board 43 is positioned below the ventilation openings, the first ventilation board 42 is positioned above the ventilation openings, a first air inlet (not marked) and a second air inlet (not marked) are arranged at the bottom of the combustion chamber 4, the partition board 41 is spaced between the first air inlet and the second air inlet, the first air inlet is positioned below the first ventilation board 42, and the second air inlet is positioned below the second ventilation board 43;

wherein the combustion chamber 4 is arranged in the casing 1, the burner 2 is arranged in the combustion chamber 4 and above the second ventilation plate 43, the air inlet is connected with the ventilation opening, the gas supply pipe 6 is arranged in the combustion chamber 4 and below the first ventilation plate 42, the air nozzle is arranged opposite to the corresponding ventilation opening, the partition 41 is arranged between the burner 2 and the gas supply pipe 6, the second fan 52 is connected with the second air inlet, and the first fan 51 is connected with the first air inlet.

Specifically, the first ventilation plate 42 forms a first air inlet cavity at the bottom of the combustion chamber 4 on the other side of the partition 41, and the second ventilation plate 43 forms a second air inlet cavity at the bottom of the combustion chamber 4 on one side of the partition 41; a gas supply pipe 6 is located in the first air intake chamber. In use, the air flow output by the first fan 51 enters the first air inlet cavity, the air flow enters the burner 2 through the ventilation opening to form primary air, and the primary air is mixed with the fuel gas output by the air nozzle of the fuel gas supply pipe 6 in the burner 2 and finally output to be ignited for combustion.

The air flow output by the second fan 52 enters the second air inlet cavity, and enters the combustion cavity through a plurality of second air ventilation holes 431 formed in the second air ventilation plate 43 to form secondary air, and the secondary air is conveyed upwards from the bottom of the combustor 2 to assist the ignited fuel gas to be fully combusted in the combustion cavity.

Because the air flows output by the first fan 51 and the second fan 52 are mutually independent, the rotating speeds of the first fan 51 and the second fan 52 can be respectively and independently controlled, and the proportion of secondary air can be accurately regulated.

In addition, for the first ventilation plate 42, the first ventilation holes provided thereon are capable of delivering part of the air flow generated by the first fan 51 into the combustion chamber to form tertiary air. The arrangement of the first vent hole can perform pressure relief treatment on the air flow generated by the first fan 51 so as to better buffer wind pressure impact generated by independent air supply in the combustor 2, and ensure that the fuel gas completely enters the combustor 2 to be involved in combustion when the first fan 51 is started or wind speed is regulated, thus ensuring reliable operation of the combustor 2.

In one embodiment, in order to compact the internal structure within the housing 1, the second fan 52 and the first fan 51 are arranged side by side in the front-rear direction of the housing 1.

Specifically, the first fan 51 and the second fan 52 are arranged side by side in the housing 1, and further the thickness space of the housing 1 can be fully utilized to simultaneously install the first fan 51 and the second fan 52, so that the internal structure is more compact, and the requirement of the miniaturized design of the gas water heater is met.

In another embodiment, to ensure secondary and tertiary air ratio distribution, the area of the second ventilation plate 43 is larger than the area of the first ventilation plate 42; the aperture ratio of the second ventilation plate 43 is larger than the aperture ratio of the first ventilation plate 42.

Specifically, the first ventilation plate 42 has a small area and a low aperture ratio so that most of the air flow generated by the first fan 51 enters the burner 2 to form primary air. The second ventilation plate 43 has a larger area and a higher aperture ratio, so as to ensure that the air flow generated by the second fan 52 can be uniformly distributed and smoothly enter the combustion cavity of the combustion chamber 4.

In another embodiment of the present application, in order to reduce the transfer of heat inside the combustion chamber 4 to the outside, in particular in order to avoid severe baking of the front panel of the casing 1. The inner side of the front plate of the combustion chamber 4 is provided with a first plate body 44, a first air interlayer (not marked) is formed between the first plate body 44 and the front plate, the edge of the first ventilation plate 42, which is close to the front plate, is provided with an upper folded edge 422, the top of the upper folded edge 422 is provided with an outward turned edge 423, and at least one row of third ventilation holes 424 are also formed in the outward turned edge 423;

the edge of the outward flange 423 abuts against the inner surface of the front plate, the lower edge of the first plate body 44 is located at the upper portion of the outward flange 423, and the third ventilation holes 424 are configured to blow air toward the inside of the first air interlayer.

In particular, since the high temperature smoke generated by the combustion of the burner 2 in the combustion chamber 4 radiates heat outside due to heat conduction, particularly the front panel of the housing 1 is generally a decorative panel, and it is necessary to avoid long-time high temperature baking. And through setting up first plate body 44 in the inside of combustion chamber 4, first plate body 44 forms first air intermediate layer with the front bezel of combustion chamber 4 to, utilize the air current that first fan 51 produced further through the export of third through hole and then enter into in the first air intermediate layer in order to form the cold air isolation layer, and then realize thermal-insulated effect.

And because the first fan 51 independently transmits air flow to the first air inlet cavity, the third through hole can output enough air flow to realize cold air isolation, and the heat insulation effect is optimized.

In one embodiment, the lower edge of the first plate body 44 is provided with an outer flange 441, the edge of the outer flange 441 is provided with a lower flange 442, the bottom of the lower flange 442 is abutted against the upper flange 422, and the outer flange 441 is blocked above the third ventilation hole 424.

Specifically, the outer flange 441 and the lower flange 442 cooperate to make the air flow output from the third ventilation hole 424 mainly serve to form air isolation at the first plate 44. In a preferred embodiment, the outer flange 441 is provided with a plurality of fourth vent holes 443. In use, a part of the airflow output from the third ventilation hole 424 is directly and severely conveyed to the surface of the first plate 44 outside the first air interlayer through the fourth ventilation hole 443 to form a first cold air isolation layer, and the rest of the airflow output from the third ventilation hole 424 enters the first air interlayer to form a second cold air isolation layer, so that the heat insulation capacity is improved more effectively.

Likewise, a second plate body 45 is provided on the inner side of the rear plate of the combustion chamber 4, a second air interlayer is formed between the second plate and the rear plate, the edge of the second ventilation plate 43 is abutted against the rear plate, the bottom of the second plate body 45 is abutted against the second ventilation plate 43, and the second ventilation holes 431 at the rear edge of the second ventilation plate 43 are also configured to blow air into the second air interlayer.

Specifically, for reducing heat leakage, the back of the casing 1 forms a second air interlayer with the rear plate of the combustion chamber 4 through the second plate 45, and forms a cold air isolation layer by delivering air through the second ventilation holes 431 corresponding to the bottom.

Similarly, the inner containers of the two side plates of the combustion chamber 4 are respectively provided with a third plate 46, and a third air interlayer is formed between the first upper plate and the corresponding side plate; the second ventilation holes 431 at both side edges of the second ventilation plate 43 are also configured to blow toward the inside of the third air interlayer, and the first ventilation holes 421 at both side edges of the first ventilation plate 42 are also configured to blow toward the inside of the third air interlayer.

By arranging the air interlayer region around the combustion chamber 4, heat conduction to the side wall of the combustion chamber 4 can be effectively reduced due to low heat conductivity of air in the air interlayer region, and finally, heat conduction to the shell 1 is reduced. Meanwhile, because the air in the air interlayer region is heated, the cold air at the bottom can quickly flow into the air interlayer region 100 by utilizing the principle of rising hot air, so that the heat in the air interlayer region is effectively taken away, and the heat dissipation efficiency is further effectively improved.

Based on the above technical solution, the second embodiment is optional, in order to further improve the combustion efficiency of the fuel gas and ensure that the fuel gas is uniformly distributed in the burner 2, so as to reduce occurrence of phenomena of partial flame excessive combustion and insufficient combustion. The burner 2 is designed with the following structural improvements.

As shown in fig. 11-14, the burner 2 includes a plurality of fire rows 21, wherein a diffusion flow passage 211, a diversion groove 212 and an air outlet cavity 213 are provided in the fire rows 21, the diffusion flow passage 211, the diversion groove 212 and the air outlet cavity 213 are sequentially communicated, a first inclined surface 201 is provided on the lower surface of the end of the diffusion flow passage 211, a second inclined surface 202 is provided on the diversion groove 212 adjacent to the lower surface of the first inclined surface 201, and the first inclined surface 201 and the second inclined surface 202 extend obliquely upward toward a uniform direction along the air flow direction;

the top of the fire row 21 is provided with a plurality of air outlet holes (not marked), the air outlet holes are communicated with the air outlet cavity 213, and the inlet of the diffusion flow passage 211 is the air inlet.

Specifically, the gas and the primary air are input into the corresponding fire row 21 of the burner 2 through the diffusion flow passage 211, and after the gas flow is conveyed to the end through the diffusion flow passage 211, the gas flow is guided to flow upwards through the inclination of the first inclined surface 201, so that the occurrence of vortex groups at the end due to the change of the flow direction of the gas flow can be reduced.

And after the airflow flows into the diversion trench 212 from the diffusion flow passage 211, the thickness of the diversion trench 212 is smaller, so that the airflow can be dispersed along the length direction of the fire row 21. When the splitter box 212 distributes airflow, due to the influence of the inertia of airflow, the airflow is changed to directly punch the upper air outlet hole, so that uneven airflow distribution is easy to occur at the end of the upper part of the air inlet adjacent to the diffuser channel 211, and even vortex groups appear (in fig. 14, larger vortex groups exist at the position a and the position B, the vortex group at the position 1 occupies a certain space inside the fire grate, the efficiency and uniformity of mixing of the fuel gas and the air are influenced, the vortex group at the position 2 influences the vertical degree of the airflow of the upper fire hole, and the risk of burning the wall surface of the flame is increased). By providing the second inclined surface 202 on the lower surface of the shunt groove 212 adjacent to the first inclined surface 201, the second inclined surface 202 can guide the airflow obliquely, and the airflow can be better distributed towards the other end of the shunt groove 212 due to the oblique guide of the second inclined surface 202 after the airflow flows into the shunt groove 212, so that vortex is reduced (the vortex is not formed in the marked position C and the position D in fig. 13, and the uniformity and the verticality of the airflow are increased).

In some embodiments, the angle of inclination of the first inclined surface 201 is not less than the angle of inclination of the second inclined surface 202.

Specifically, the inclination angle of the first inclined surface 201 is small, so that the airflow of the diffuser flow passage 211 can be uniformly dispersed at the upper port; the second inclined surface 202 has a large inclination angle to effectively guide the airflow toward the other end of the shunt groove 212. The uniformity of the gas concentration distribution above the gas outlet holes of the optimized fire row 21 is obviously optimized, and the height uniformity of the flame above the gas outlet holes is better than that before the optimization.

In some embodiments, the ratio of the inclination angle of the first inclined surface 201 to the inclination angle of the second inclined surface 202 is 0.5.ltoreq.C.ltoreq.1.0. The first inclined surface has an inclination angle of 11 degrees to 14 degrees, and the second inclined surface 202 has an inclination angle of 22 degrees to 24 degrees.

In addition, the air inlet of the diffuser flow path 211 may have a flare structure in order to ensure smooth entry of the fuel gas and the primary air.

The design of two inclined planes can make gas component distribution more even and the also effectual even optimization of air current speed, through confirming the terminal angle of diffusion section and the corresponding relation of splitter box lower extreme angle, effectively solve the inhomogeneous problem of component distribution, it is showing to improve component distribution homogeneity effect, make venthole mixed gas's component, speed homogeneity higher, flame stability is higher, can effectively promote gas heater work efficiency, simultaneously, can effectively reduce the flame height when burning, and then reduce the combustion chamber height, reduce the volume of combustor.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. The burner is characterized by comprising a plurality of fire rows, wherein a plurality of fire rows are arranged side by side, a diffusion flow passage, a flow dividing groove and an air outlet cavity are arranged in each fire row, the diffusion flow passage, the flow dividing groove and the air outlet cavity are sequentially communicated, a first inclined surface is arranged on the lower surface of the tail end of the diffusion flow passage, a second inclined surface is arranged on the lower surface of the flow dividing groove adjacent to the first inclined surface, and the first inclined surface and the second inclined surface extend upwards in an inclined manner towards a uniform direction along the air flow direction; the top of fire row is provided with a plurality of ventholes, the venthole intercommunication the cavity of giving vent to anger, the import of diffusion runner is the air inlet.

2. The burner of claim 1, wherein the angle of inclination of the first inclined surface is not less than the angle of inclination of the second inclined surface.

3. The burner of claim 2, wherein a ratio of the inclination angle of the first inclined surface to the inclination angle of the second inclined surface is 0.5C 1.0.

4. A burner according to claim 3, wherein the first inclined surface has an inclination angle of 11 degrees to 14 degrees and the second inclined surface has an inclination angle of 22 degrees to 24 degrees.

5. The burner of claim 1 wherein the inlet of the diffuser passage is flared.

6. A gas water heater, comprising:

a combustion chamber;

a burner as claimed in any one of claims 1 to 5, said burner being disposed within said combustion chamber;

the gas supply pipe is provided with a plurality of gas nozzles, the gas supply pipe is arranged in the combustion chamber, and the gas nozzles are arranged opposite to the fire row corresponding to the water heater;

and the fan is arranged on the combustion chamber.

7. The gas water heater according to claim 6, wherein a vertically arranged partition plate is arranged in the combustion chamber, a plurality of ventilation openings are formed in the partition plate, a first ventilation plate is arranged on one side of the partition plate, a second ventilation plate is arranged on the other side of the partition plate, a plurality of first ventilation holes are formed in the first ventilation plate, a plurality of second ventilation holes are formed in the second ventilation plate, the second ventilation plate is located below the ventilation openings, the first ventilation plate is located above the ventilation openings, a first air inlet cavity is formed in the bottom of the combustion chamber by the first ventilation plate on the other side of the partition plate, and a second air inlet cavity is formed in the bottom of the combustion chamber on one side of the partition plate;

the gas inlet of the burner is connected with the corresponding ventilation opening, the gas supply pipe is positioned below the first ventilation plate, the gas nozzle is arranged opposite to the corresponding ventilation opening, and the partition plate is positioned between the burner and the gas supply pipe;

the fan comprises a first fan and a second fan, wherein the first fan is connected with the first air inlet cavity, and the second fan is connected with the second air inlet cavity.

8. The gas water heater of claim 7, wherein the air flow output by the first fan enters the air inlet to form primary air, the air flow output by the second fan enters the first air vent to form secondary air via the second air vent, and the air flow output by the first fan enters the first air vent to form tertiary air.

9. The gas water heater as recited in claim 7, wherein the second fan and the first fan are arranged side by side in a front-to-rear direction of the gas water heater.

10. The gas water heater of claim 7, wherein the second ventilation plate has an open porosity greater than the first ventilation plate.