CN120969839A - Burners, burners and gas water heaters - Google Patents

Abstract

This invention discloses a burner, a burner, and a gas water heater. The burner is provided with an injection port, multiple main flame holes, and multiple auxiliary flame holes. The burner also has an internal gas supply channel and a combustion channel. The main flame holes are distributed along the length of the burner on its upper surface, and the auxiliary flame holes are distributed along the length of the burner on its two side walls. The main flame holes and auxiliary flame holes are respectively connected to the combustion channel. The injection port is connected to the gas supply channel, and the gas supply channel is connected to the combustion channel. Flame stabilizing shells are respectively provided on the two side walls of the burner, forming a flame stabilizing flow channel with the burner. The flame stabilizing shells cover the outside of the auxiliary flame holes. Positioning protrusions are provided on the inner surface of the flame stabilizing shells, and these protrusions abut against the side walls of the burner. This improves the combustion completeness and stability of the burner.

Description

Fire row, burner and gas water heater

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a fire grate, a burner 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 burner that burns gas within the burner to heat water flowing through the heat exchanger, a combustion chamber, and a heat exchanger.

As an important part of a gas water heater, chinese patent publication No. CN 117490068A discloses a fire grate for a burner, the burner and the water heater, wherein the fire grate has a body and a fire cap sleeved on the body. Wherein, will form steady flame runner between hood and the body, be provided with main flame hole and the auxiliary flame hole that is located steady flame runner top on the body of fire row.

However, in the actual use process, the width dimensions of the flame stabilizing runners on the two sides of the body are inconsistent due to assembly errors, so that insufficient combustion of fuel gas and unstable flame can occur in the combustion process. In view of this, it is an object of the present invention to devise a technique for improving combustion sufficiency and stability.

Disclosure of Invention

The invention provides a fire grate, a burner and a gas water heater, which can improve the combustion sufficiency and stability of the burner.

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

In one aspect, the invention provides a fire row, wherein an ignition port, a plurality of main fire holes and a plurality of auxiliary fire holes are arranged on the fire row, an air supply channel and a combustion channel are also arranged in the fire row, the plurality of main fire holes are distributed on the upper surface of the fire row along the length direction of the fire row, the plurality of auxiliary fire holes are distributed on two side walls of the fire row along the length direction of the fire row, the main fire holes and the auxiliary fire holes are respectively communicated with the combustion channel, the injection port is communicated with the air supply channel, the air supply channel is communicated with the combustion channel, flame stabilizing shells are respectively arranged on two side walls of the fire row, a flame stabilizing flow channel is formed between the flame stabilizing shells and the fire row, and the flame stabilizing shells are covered on the outer sides of the auxiliary fire holes;

Wherein, be provided with the location arch on the internal surface of steady flame shell, the location arch supports and leans on the lateral wall of fire row.

In an embodiment of the present application, a plurality of positioning protrusions are disposed on an inner surface of the flame stabilizing case, and the plurality of positioning protrusions are sequentially arranged side by side along a length direction of the fire row.

In an embodiment of the application, a plurality of connecting ribs are further arranged between the two flame stabilizing shells, and the connecting ribs are positioned between the two adjacent main fire holes.

In an embodiment of the application, two ends of the flame stabilizing shell are further provided with flame transmitting sheets, and the flame transmitting sheets are bent towards the outer side of the flame stabilizing shell.

In an embodiment of the application, two ends of the fire row are respectively provided with a combustion protruding part, the combustion protruding part extends towards the outer side of the fire row along the air outlet direction of the main fire hole, and the combustion protruding part is provided with a combustion hole;

wherein a plurality of the main fire holes are located between the combustion bosses at both ends of the fire row.

In one embodiment of the application, two ends of the fire row are respectively provided with a flanging hole, the flanging of the flanging holes extends towards the outer side of the fire row along the air outlet direction of the main fire hole, and the flanging holes are combustion protruding parts.

In an embodiment of the present application, the air outlet area of the combustion hole is not smaller than the air outlet area of the main fire hole.

In another aspect, an embodiment of the present application further provides a burner, including a housing and a plurality of fire rows, where the fire rows adopt the fire rows described above, and a plurality of the fire rows are arranged side by side and disposed in the housing.

In one embodiment of the application, the shell comprises a surrounding baffle and a bottom plate, wherein one side wall of the surrounding baffle is provided with the first ventilation opening, and the inner surface of the surrounding baffle is provided with positioning ribs around the periphery of the first ventilation opening;

the bottom plate is arranged at the bottom of the enclosure, and is provided with a plurality of mounting clamping grooves which are arranged opposite to the corresponding positioning ribs;

the fire row is connected with the corresponding positioning ribs through the guide ports, and the fire row is also clamped in the corresponding installation clamping groove.

In yet another aspect, an embodiment of the present application further provides a gas water heater, including a casing, and further including the burner described above, where the burner is located in the casing.

Through being provided with the location arch at the inner wall of steady flame shell, steady flame shell is fixed on the fire row after, the location arch will lean on the lateral wall of fire row, on the one hand, utilize the location arch can ensure that the width of steady flame runner that forms between steady flame shell and the fire row keeps unanimous, under steady flame runner's effect, flame shaping is better, the burning is more stable, more abundant, on the other hand the location arch can ensure that steady flame runner that steady flame shell formed on fire row both sides keeps better symmetrical distribution's state, more be favorable to the stable shaping of flame, the burning sufficiency and the stability of combustor have been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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 invention, 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 fire grate according to an embodiment of the present invention;

FIG. 2 is a second schematic diagram of an embodiment of a fire grate according to the present invention;

FIG. 3 is a schematic view of a partial structure of an embodiment of the fire grate of the present invention;

FIG. 4 is one of the cross-sectional views of an embodiment of the fire grate of the present invention;

FIG. 5 is a second cross-sectional view of an embodiment of a fire grate of the present invention;

FIG. 6 is a schematic view of a flame holding shell according to an embodiment of the present invention;

FIG. 7 is one of the flame simulation diagrams of the fire grate of the present invention;

FIG. 8 is a second flame simulation diagram of a fire grate of the present invention;

FIG. 9 is a simulated distribution diagram of the airflow of a fire grate in accordance with the present invention;

FIG. 10 is a flame simulation diagram of a prior art fire grate;

FIG. 11 is a simulated distribution diagram of the airflow of a fire exhaust in the prior art;

FIG. 12 is a schematic view of a burner embodiment of the present invention;

FIG. 13 is a second schematic view of a burner embodiment of the present invention;

FIG. 14 is a third schematic view of a burner embodiment of the present invention;

FIG. 15 is a schematic view of the first mounting plate of FIG. 12;

FIG. 16 is a schematic view of the second mounting plate of FIG. 12;

FIG. 17 is a schematic view of the structure of the lining panel of FIG. 12;

FIG. 18 is one of the assembled views of the fire grate and the housing in the burner embodiment of the present invention;

FIG. 19 is a second view of the assembly of the fire grate and the housing in the burner embodiment of the present invention.

Detailed Description

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

It should be noted that, in the description of the present invention, 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 invention. 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 invention, 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, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, 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 invention. 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 invention. Furthermore, the present invention 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 invention 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.

As shown in fig. 1-6, an embodiment of the present application provides a fire grate 11, where the fire grate 11 generally has an injection port 11 and a plurality of main fire holes 12, and an air supply channel 13, a combustion channel 14 and a diversion chamber 16 are further disposed inside the fire grate 1, and the air supply channel 13 has an air inlet section 131, a curved section 132 and a distribution section 133 that are sequentially connected, the injection port 11 is communicated with the air inlet section 131, and the plurality of main fire holes 12 are arranged side by side along the length direction of the distribution section 133. The splitter chamber 16 communicates with the curved section 132, and the splitter section 133 and the splitter chamber 16 communicate with the combustion channels 14, respectively. Optionally, the fire grate 1 is further provided with a widening channel 15 inside, and the distribution section 133 and the distribution chamber 16 are respectively connected to the combustion channel 14 through the widening channel 15.

In use, fuel gas and air enter the inlet section 131 through the inlet 11, and as the air flows through the curved section 132, a portion of the air changes flow direction into the distribution section 133 and a portion of the air will flow inertly to the diversion chamber 16 outside the curved section 132.

In order to reduce the technical problem of uneven distribution of fuel gas caused by the airflow impact of the bent section 132, at least the following structural improvement is made to the fire grate 1.

The fire grate 1 is further provided with a first throttle protrusion 161 and a second throttle protrusion 162 inside the flow dividing chamber 16, the first throttle protrusion being arranged outside the curved section 132, and the second throttle protrusion being arranged outside the first throttle protrusion and extending in the longitudinal direction of the distribution section 133.

Specifically, the first throttling protrusion is adjacent to the curved section 132 and is located at an outer side of the curved section 132, and after the airflow enters the curved section 132, the airflow flowing into the flow dividing chamber 16 is throttled by the first throttling protrusion, so that excessive airflow can be effectively prevented from entering the flow dividing chamber 16. The air flow entering the diversion chamber 16 is further throttled by the second throttle protrusion in the process of flowing to the combustion channel 14, so that the air flow is more uniformly dispersed and output from the diversion chamber 16.

More importantly, the first throttling protrusion 161, being disposed laterally within the flow splitting chamber 16, can further act as a barrier to the flow of air into the flow splitting chamber 16 to mitigate vortex formation within the flow splitting chamber 16. Referring to fig. 11, a larger area of vortex is formed in the region C of the flow dividing chamber 16 of fig. 11 in the conventional art, whereas the area of vortex formed in the region B of the flow dividing chamber 16 of the present application shown in fig. 9 is greatly reduced.

In one embodiment, the first throttling protrusion is curved and extends along the bending direction of the bending section 132.

Specifically, for the first throttling protrusion, since the first throttling protrusion is disposed on the outer side of the curved section 132, the first throttling protrusion surrounds the curved section 132 in a conformal design, so that, on one hand, the first throttling protrusion can play a role in throttling, and on the other hand, the first throttling protrusion can further play a role in guiding the airflow to the distribution section 133, which is more beneficial to improving the distribution uniformity of the gas.

In another embodiment, a diversion chamber 16 is provided inside the fire grate 1 outside the curved section 132, and the diversion chamber 16 communicates with the curved section 132 of the air supply channel 13. And, the first throttle protrusion is disposed at a portion of the flow dividing chamber 16 that communicates with the curved section 132 of the air supply passage 13.

Specifically, the first throttling protrusion is disposed at the connection portion of the flow dividing chamber 16 and the bent section 132 to maximize the throttling effect, ensure the distribution uniformity of the gas, and improve the combustion sufficiency.

In some embodiments, the second throttling protrusion is in a bar-shaped configuration and is disposed laterally within the flow distribution chamber 16.

Specifically, for the second throttling protrusion, the throttling of the second throttling protrusion is not required to be too large, and only needs to uniformly disperse the air flow in the diversion chamber 16, so that the second throttling protrusion has a strip-shaped structure, so that the width of the second throttling protrusion is reduced and the length of the second throttling protrusion is increased, and the air flow entering the diversion chamber 16 can be more uniformly dispersed.

In some embodiments, the combustion channel 14, the widening channel 15 and the distribution section 133 extend along the length direction of the fire grate 1, the combustion channel 14 and the widening channel 15 are arranged side by side and are communicated with each other, the diversion chamber 16 and the distribution section 133 are respectively communicated with the widening channel 15, and the widening channel 15 is gradually widened along the direction of the airflow entering the combustion channel 14.

In the second embodiment, in order to reduce the influence of overheat damage to the wall surface of the burner caused by the diffusion of flames at both ends of the flame row 1 toward the outside of the end portion, at least the following structural improvement is made to the flame row 1.

The two ends of the fire row 1 are respectively provided with a combustion protruding part 17, the combustion protruding part 17 extends towards the outer side of the fire row 1 along the air outlet direction of the main fire hole 12, and the combustion protruding part 17 is provided with a combustion hole 171;

wherein a plurality of the main fire holes 12 are located between the combustion bosses 17 at both ends of the fire row 1.

Specifically, a plurality of main fire holes 12 are formed in the upper surface of the fire row 1 and are sequentially arranged along the length direction of the fire row 1, a combustion protruding portion 17 protruding from the upper surface of the fire row 1 is additionally arranged on the outer side of the main fire holes 12 at the end portion of the fire row 1, and combustion holes 171 formed in the combustion protruding portion 17 are also communicated with the combustion channel 14.

In use, a mixture of gas and air is simultaneously discharged from the main fire holes 12 and the combustion holes 171 at both ends and burned. Since the root of the flame generated from the combustion hole 171 is higher than the root of the flame generated from the main fire hole 12, the flame generated from the combustion hole 171 is less affected by the flame generated from the main fire hole 12 adjacent to the combustion hole 171, thereby ensuring that the flame generated from the combustion hole 171 can burn in a direction substantially perpendicular to the upper surface of the fire row 1, and the flame generated from the combustion hole 171 does not spread out toward the end of the fire row 1, so that the side wall of the flame-roasting burner is effectively lightened.

In the actual design process, the influence of good perpendicularity on the heating of the side wall of the burner is light when flame forming is carried out, so that the number of cooling holes on the wall surface of the burner chamber can be reduced, and cooling air is reduced. For the pump-up type, the cooling holes are reduced, the machine tightness is increased, and the air which should be used for cooling participates in combustion, further reducing combustion pollutants.

Referring to fig. 10, the flames at both ends of the flame row 1 shown in fig. 10 in the conventional art tend to spread toward the outside of the ends of the flame row 1, and the main fire holes 12 corresponding to the flame existence curved sections 132 have a high flame, which causes problems of overheating the side wall of the burner and uneven combustion distribution. In the present application shown in fig. 7 and 8, the flame is generated by burning the end of the flame row 1 through the combustion hole 171 formed by the combustion boss 17, and the flame formed by the combustion hole 171 (refer to the region a in fig. 8) has a good verticality and has a light influence on the side wall heating of the burner.

In another embodiment of the present application, two ends of the fire bar 1 are respectively provided with a flanging hole, the flanging edge of the flanging hole extends towards the outer side of the fire bar 1 in the air outlet direction of the main fire hole 12, and the flanging hole is the combustion boss 17.

Specifically, in order to facilitate the processing of the combustion boss 17, during the processing of the fire grate 1, a flanging hole may be formed by punching the upper surface of the fire grate 1, and the flanging of the flanging hole will extend toward the upper side of the upper surface of the fire grate 1, so that the combustion boss 17 and the corresponding combustion hole 171 may be formed.

In another embodiment, a plurality of the combustion bosses 17 may be provided at both ends of the fire grate 1, respectively, as needed.

Specifically, by providing the plurality of combustion bosses 17 at the end of the fire row 1 so that flames output from the end of the fire row 1 through the combustion holes 171 can be vertically upward and have a sufficient width to withstand the influence of flames adjacent to the main fire holes 12, the spread of flames of the fire row 1 to the outside of the end is reduced.

In some embodiments, for the combustion holes 171, in order to make the flame formed by the combustion holes 171 have better impact resistance, the gas outlet area of the combustion holes 171 is not smaller than the gas outlet area of the main fire hole 12.

Specifically, the design of the air outlet area of the air flow of the combustion hole 171 can be slightly larger, on one hand, enough air flow can be ensured to be output from the combustion hole 171 so as to obtain flame with more stable form, on the other hand, the air outlet area of the combustion hole 171 is increased, so that the air flow can be output at the two ends more smoothly, the condition of uneven air flow distribution at the end is solved, and the air flow distribution uniformity at different positions of the fire grate 1 is improved.

In the third embodiment, in order to reduce the occurrence of insufficient combustion of gas and unstable flame, at least the following structural modifications are made to the fire grate 1.

Flame stabilizing shells 19 are respectively arranged on two side walls of the fire row 1, a flame stabilizing flow passage is formed between the flame stabilizing shells 19 and the fire row 1, and the flame stabilizing shells 19 are covered on the outer sides of the auxiliary fire holes 18;

Wherein, the inner surface of the flame stabilizing shell 19 is provided with a positioning protrusion 191, and the positioning protrusion 191 is abutted against the side wall of the fire row 1.

Specifically, the flame stabilizing shells 19 are respectively arranged at two sides of the top of the fire bar 1, a flame stabilizing flow channel is formed between the flame stabilizing shells 19 and the side walls of the fire bar 1, the auxiliary fire holes 18 arranged at two sides of the fire bar 1 are covered by the flame stabilizing shells 19, and air flows output by the auxiliary fire holes 18 are output upwards from the flame stabilizing flow channel to be matched with flames formed by the main fire holes 12 for combustion.

Wherein, owing to be provided with the location arch 191 on the steady flame shell 19, the location arch 191 supports and leans on the lateral wall of fire row 1, utilizes the protruding size of location arch 191 to carry out effective and accurate control to steady flame runner's width, and then realizes that the width of steady flame runner of fire row 1 both sides keeps unanimous, has improved the gas burning sufficiency to ensure the morphological stability of flame. The design of the positioning protrusion 191 can ensure that the single-side one-side flame stabilizing flow passage meets the design requirement of the drawing on one hand, and the symmetrical size of the two-side flame stabilizing flow passages meets the design requirement of the drawing on the other hand, and can ensure that the two-side flame stabilizing flow passages are symmetrical on the other hand

In some embodiments, the inner surface of the flame stabilizing case 19 is provided with a plurality of positioning protrusions 191, and the plurality of positioning protrusions 191 are sequentially arranged side by side along the length direction of the fire row 1.

Specifically, the inner wall of the flame holding case 19 is provided with a plurality of positioning projections 191 along the longitudinal direction of the flame row 1, and the width of the flame holding flow path in the longitudinal direction of the flame row 1 can be ensured to be uniform by the plurality of positioning projections 191.

The air flow output by the flame stabilizing flow passage also forms flame above the flame stabilizing flow passage and is matched with the main flame formed by the main flame holes, so that the combustion is more sufficient and stable, the fire grate 1 can achieve larger combustion load, and the fire grate 1TDR (maximum load/minimum load) is obviously increased. The fire grate 1 has strong universality and can be suitable for different machine types and different elevation environments.

In some embodiments, a plurality of connection ribs 192 are further disposed between two flame holding shells 19, and the connection ribs 192 are located between two adjacent main fire holes 12.

Specifically, the flame stabilizing cases 19 on both sides of the flame row 1 are connected by a plurality of connecting ribs 192, so that the two flame stabilizing cases 19 are integrally assembled to the flame row 1, thereby facilitating the processing and production.

In another embodiment, two ends of the flame stabilizing shell 19 are further provided with flame transfer pieces 193, and the flame transfer pieces 193 are bent towards the outer side of the flame stabilizing shell 19.

Specifically, the use scene of the gas water heater is changeable, the water temperature and the water quantity demands of users are different, the number of the fire rows 1 in the gas water heater is different, and each scene corresponds to different combustion sections. In order to meet the multi-scene use requirements of users, the gas water heater needs to be quickly switched for segmentation. So the rapid fire transfer performance between each fire row 1 is important.

By providing the flame transfer pieces 193 at both end portions of the flame stabilizing case 19, on the one hand, the narrowed area of the flame transfer pieces 193 does not need to be excessively large, and flame transfer can be achieved by the flame transfer pieces 193 at the end portions. On the other hand, the flame propagation sheet 193 is disposed at one side of the combustion hole 171, and the combustion hole 171 can generate flame in a stable form to satisfy rapid and stable flame propagation between the adjacent two flame rows 1 through the flame propagation sheet 193. In addition, the number of the fire transfer pieces 193 is small, the area is small, the air flow interference on the two sides of the fire row 1 is small, and the combustion influence is small.

In the fourth embodiment, based on the first to third embodiments, the present application further provides a burner, and the first, second and/or third embodiments may be configured as a fire grate. The following improved design is carried out aiming at the design of the installation structure of the fire grate, the primary air and the secondary air.

As shown in fig. 12 to 19, an embodiment of the present application provides a burner comprising a housing 2 and a plurality of fire rows 1, a plurality of the fire rows 1 being arranged side by side and disposed in the housing 2, the fire rows 1 having an injection section for introducing fuel gas and primary air for combustion.

In order to improve the uniformity of the distribution of the secondary air of the fire row 1 and ensure that the fuel gas and the air at each position of the fire row 1 are uniformly mixed to improve the fuel gas combustion sufficiency, the following structural improvements are carried out on the shell 2 and the fire row 1.

A plurality of first ventilation openings 201 are formed in one side wall of the shell 2, the first ventilation openings 201 are arranged side by side, and at least one second ventilation opening 202 is formed in the lower portion of the shell 2;

and a secondary air channel is formed between two adjacent fire rows 1, the injection section of the fire row 1 is connected with the corresponding first ventilation opening 201, the fire row 1 is arranged above the second ventilation opening 202, and the secondary air channel is communicated with the second ventilation opening 202.

Specifically, after the fire grate 1 is installed in the shell 2, the injection port of the injection section of the fire grate 1 is in butt joint with the first ventilation opening 201 on the shell 2, and the primary air of gas mixing enters the injection port through the first ventilation opening. And after gas and primary air mix in fire row 1 and are lighted from the venthole output of fire row 1, secondary air then is introduced into shell 2 through the second ventilation opening 202 that shell 2 bottom set up to, second ventilation opening 202 is owing to arrange in the bottom of shell 2, can be convenient carry out the trompil design according to the demand of fire row 1 different positions to the secondary air, in order to ensure that the secondary air can more even distribution in the venthole department of each position of fire row 1, and then realize gas and secondary air intensive mixing, improve combustion efficiency.

After the secondary air enters the shell 2 through the second air port 202, the secondary air enters a secondary air channel formed between the fire rows 1, and the secondary air flows to the air outlet holes of the fire rows 1 along the secondary air channel.

In some embodiments, the bottom of the housing 2 forms a bending surface, the bending surface matches the lower outline of the fire grate 1, and the second ventilation opening 202 is formed on the bending surface.

Specifically, for the fire grate 1, the top of the fire grate is generally flat due to the configuration of the air outlet holes, and the bottom of the fire grate 1 has a height difference due to the profiling design. Therefore, in order to ensure that the air flow entering the housing 2 through the different second air inlets 202 can quickly enter the corresponding part of the secondary air channel, the bottom of the housing 2 is designed to be a bending surface, so that the bending surface matches the bottom contour of the fire grate 1, and further, the air inlet quantity of the secondary air channel is reduced due to the fact that a larger interval space is formed at the bottom of the fire grate 1.

In one embodiment, an extending portion 101 extending downwards is formed at the bottom of the fire row 1, and the injection section is formed on the extending portion 101;

A first lap joint part 102 is formed between the end part of the fire row 1, which is far away from the injection port of the injection section, and the extension part 101;

The bending surface has a first mounting surface 203 and a second mounting surface 204, the first mounting surface 203 is higher than the second mounting surface 204, the second ventilation opening 202 comprises a first sub-opening 2021 and a second sub-opening 2022, the first sub-opening 2021 is formed on the first mounting surface 203, and the second sub-opening 2022 is formed on the second mounting surface 204;

Wherein the first overlap 102 is disposed above the first mounting surface 203 and the extension 101 is disposed above the second mounting surface 204.

Specifically, for the structural design requirement of the profiling, the fire grate 1 is provided with an extension 101 at the bottom thereof to form an injection section. At this time, the end of the fire row 1 away from the port facilitates the generation of a height difference between the extension portions 101 to form the first overlap portion 102. In order to ensure the air intake, the bent surface may form the first installation surface 203 to be closely attached to the bottom of the first overlap portion 102, so that the installation requirement may be met, and the secondary air introduced by the first sub-air opening 2021 on the first installation surface 203 may directly enter the secondary air channel where the first overlap portion 102 is located, so as to ensure sufficient supply of the secondary air.

In another embodiment, a second lap joint part 103 is formed between the end part of the fire row 1 adjacent to the injection port of the injection section and the extension part 101;

The second mounting plate 22 has a third mounting surface 205, the third mounting surface 205 being higher than the second mounting surface 204, the second mounting surface 204 being located between the first mounting surface 203 and the third mounting surface 205;

The second air vent 202 includes a third sub-air vent 2023, the third sub-air vent 2023 being formed on the third mounting surface 205;

Wherein the third overlap is disposed above the third mounting surface 205.

Specifically, the second overlapping portion 103 is formed corresponding to the end of the fire grate 1 near the injection section for installation, and the fire grate 1 is overlapped on the third installation surface 205 through the second overlapping portion 103. Meanwhile, in order to meet the requirement of sufficient supply of secondary air at the second overlap 103, a third sub-air opening 2023 is further provided on the third mounting surface 205, and the third sub-air opening 2023 is immediately adjacent to the bottom of the second overlap 103, so that secondary air introduced by the third sub-air opening 2023 can directly enter the secondary air channel. Thus, sufficient secondary air supply can be obtained at each position of the fire grate 1, so that the mixing uniformity of the fuel gas and the air is improved, and the combustion sufficiency of the fuel gas is further improved.

In some embodiments, a plurality of the first sub-tuyeres 2021 are provided on the first mounting surface 203, and are arranged side by side, so that secondary air is supplied through the plurality of first sub-tuyeres 2021 being uniformly distributed at the bottom of each fire row 1. The first sub-air openings 2021 may be configured as strip-shaped holes, and the first sub-air openings 2021 extend along the length direction of the fire row 1 and are located at one side of the fire row 1.

In some embodiments, the second mounting surface 204 is provided with a plurality of second sub-tuyeres 2022 arranged side by side, and the second sub-tuyeres 2022 are strip-shaped holes, and the second sub-tuyeres 2022 extend along the length direction of the fire row 1. Specifically, there may be a plurality of second sub-tuyeres 2022, and the second sub-tuyeres 2022 also extend along the length direction of the fire row 1.

Or the second mounting surface 204 is provided with at least one second sub-tuyere 2022, and the second sub-tuyere 2022 extends along a direction perpendicular to the length direction of the fire grate 1. Specifically, the second sub-tuyere 2022 may be one and occupy enough space on the second mounting surface 204 to meet the secondary air intake requirement of the large area of the bottom of the multi-row fire grate 1.

In some embodiments, a plurality of the third sub-tuyeres 2023 are provided on the third mounting surface 205, and are arranged side by side, so that secondary air is supplied through the plurality of third sub-tuyeres 2023 being uniformly distributed at the bottom of each fire row 1. The third sub-tuyeres 2023 may be formed as strip-shaped holes, and the third sub-tuyeres 2023 may extend along the length direction of the fire row 1.

Through setting up second ventilation opening 202 in the bottom of shell 2, second ventilation opening 202 arranges and can distribute according to the requirement of secondary ventilation in the bottom of fire row 1, and then in the use, can ensure that fire row 1 different positions department overgrate air distributes evenly to improve gas and air mixing homogeneity in order to improve gas combustion sufficiency.

As shown in fig. 12 to 19, for the fire grate 1, it is required that a plurality of fire grate 1 are assembled in the housing 2 side by side in sequence, and in order to reduce the use amount of parts, reduce the manufacturing cost and improve the assembly efficiency, the following structural modifications are made to the housing 2 and the fire grate 1.

The shell 2 comprises a surrounding block and a bottom plate 23, wherein a plurality of first ventilation openings 201 are formed in one side wall of the surrounding block, and positioning ribs 206 are arranged on the inner surface of the surrounding block around the periphery of the first ventilation openings 201;

The fire bars 1 are arranged side by side and are arranged in the shell 2, an injection port of an injection section of the fire bar 1 is connected with the corresponding positioning rib 206, and the fire bars 1 are also clamped in the corresponding installation clamping grooves 207.

The positioning rib 206 has an annular structure, and the positioning rib 206 is inserted into the injection port.

Specifically, in the assembly process, the injection ports of the fire bars 1 are abutted with the positioning ribs 206, so that the injection ports of the fire bars 1 are positioned through the positioning ribs 206, then, the end parts, far away from the positioning ribs 206, of the fire bars 1 are clamped in the positioning clamping grooves 208, and therefore, the fire bars 1 can be installed by only utilizing the assembly structure in the shell 2, and then, the fire bars 1 are installed without additionally configuring an independent installation frame, so that the number of parts is reduced, and the assembly efficiency is improved.

In some embodiments, the enclosure includes a first mounting plate 21 and a second mounting plate 22, the cross section of the first mounting plate 21 is in a U-shaped structure, the second mounting plate 22 is connected between two ends of the first mounting plate 21, and the bottom plate 23 is disposed at the bottom of the second mounting plate 22;

Wherein the second mounting plate 22 is provided with the first ventilation opening 201 and the positioning ribs 206.

Specifically, for the enclosure, it is a split structure, the first mounting plate 21 is a semi-surrounding structure, and the second mounting plate 22 is provided with the first ventilation opening 201 to meet the air intake requirements of the fuel gas and the primary air.

In another embodiment, the outer shell 2 further comprises an inner liner 24, the inner liner 24 being provided on the inner wall of the first mounting plate 21 and being arranged outside the fire row 1;

a positioning part extending towards the second mounting plate 22 is arranged at a position of the inner lining plate 24 opposite to the second mounting plate 22, and a plurality of positioning clamping grooves 208 are arranged at the edge of the positioning part;

Wherein, the fire bar 1 is clamped in the corresponding positioning clamping groove 208.

Specifically, in order to reduce heat conduction from the interior of the casing 2 to the outside when the fire grate 1 is burned, a lining plate 24 is provided in the casing 2 to insulate heat, and an air interlayer is formed between the lining plate 24 and the casing 2 to insulate heat.

In addition, by further providing the positioning clamping groove 208 on the inner lining plate 24, the positioning clamping groove 208 can position the end part of the fire grate 1 far away from the injection port, so that the installation accuracy and reliability of the fire grate 1 are more effectively improved.

In some embodiments, for convenience in mounting the inner lining board 24 on the outer shell 2, the first mounting plate 21 is further provided with an inwardly and upwardly extending positioning latch 211, and a lower edge of the inner lining board 24 is clamped between the positioning latch 211 and the first mounting plate 21.

Specifically, when the inner liner 24 is installed, the inner liner 24 is placed on the inner side of the first mounting plate 21 and is supported in a predetermined position by the positioning tongue 211, and then the upper portion of the inner liner 24 may be fixedly coupled to the first mounting plate 21 by reduced screws.

In another embodiment, the positioning ribs 206, the mounting slots 207 and the positioning slots 208, which are connected and matched with the same fire grate 1, are sequentially arranged.

Specifically, after the fire grate 1 is assembled in place, the two ends of the fire grate 1 are limited and fixed by the positioning ribs 206 and the positioning clamping grooves 208, and the bottom of the fire grate 1 can be further fixed by being supported by the mounting clamping grooves 207, so that the fire grate 1 can be firmly assembled into the shell 2.

Wherein the positioning slot 208 is arranged obliquely above the mounting slot 207.

In another embodiment, the bottom plate 23 is provided with a second air vent 202 to meet the requirement of supplying secondary air through the second air vent 202.

The above embodiments are only for illustrating the technical solution of the present invention, but not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solution described in the above embodiments or equivalents may be substituted for some of the technical features thereof, and the modifications or substitutions do not depart from the spirit and scope of the technical solution as claimed in the present invention.

Claims (10)

1. A burner, wherein the burner is provided with an ejector port, a plurality of main burner holes and a plurality of auxiliary burner holes, and the burner interior is further provided with a gas supply channel and a combustion channel, the plurality of main burner holes are distributed along the length direction of the burner on the upper surface of the burner, the plurality of auxiliary burner holes are distributed along the length direction of the burner on both side walls of the burner, the main burner holes and the auxiliary burner holes are respectively connected to the combustion channel, the ejector port is connected to the gas supply channel, and the gas supply channel is connected to the combustion channel, characterized in that a flame stabilizing shell is provided on each side wall of the burner, a flame stabilizing flow channel is formed between the flame stabilizing shell and the burner, and the flame stabilizing shell covers the outside of the auxiliary burner holes; The flame stabilizer shell has a positioning protrusion on its inner surface, which abuts against the side wall of the fire bar. 2. The fire rack according to claim 1, characterized in that a plurality of positioning protrusions are provided on the inner surface of the flame stabilizing shell, and the plurality of positioning protrusions are arranged side by side in sequence along the length direction of the fire rack. 3. The fire purifier according to claim 1, characterized in that a plurality of connecting ribs are further provided between the two flame stabilizers, and the connecting ribs are located between two adjacent main fire holes. 4. The fire dam according to claim 1, characterized in that, flame-transmitting plates are further provided at both ends of the flame-stabilizing shell, and the flame-transmitting plates are bent toward the outer side of the flame-stabilizing shell. 5. The fire bar according to claim 1, characterized in that, each of the two ends of the fire bar is provided with a combustion protrusion, the combustion protrusion extends outward of the fire bar along the gas outlet direction of the main fire hole, and the combustion protrusion is provided with a combustion hole; Among them, the plurality of main fire holes are located between the combustion protrusions at both ends of the fire bar. 6. The burner according to claim 5, characterized in that, each of the two ends of the burner is provided with a flanged hole, the flange of the flanged hole extending outward from the burner along the gas outlet direction of the main burner hole; the flanged hole is the combustion protrusion. 7. The burner according to claim 5, wherein the exhaust area of the combustion hole is not less than the exhaust area of the main burner hole. 8. A burner comprising a housing and a plurality of burners, characterized in that the burners are as described in any one of claims 1-7, and the plurality of burners are arranged side by side and disposed in the housing. 9. The burner according to claim 8, wherein the outer shell comprises a baffle and a bottom plate, a first ventilation opening is provided on one side wall of the baffle, and positioning ribs are provided on the inner surface of the baffle around the outer periphery of the first ventilation opening; The base plate is disposed at the bottom of the enclosure, and the base plate is provided with a plurality of mounting slots, which are arranged opposite to the corresponding positioning ribs; The ejector port of the fire bar is connected to the corresponding positioning rib, and the fire bar is also locked in the corresponding mounting slot. 10. A gas water heater, comprising a housing, characterized in that it further comprises a burner as described in any one of claims 7-9, the burner being located within the housing.