CN218511199U

CN218511199U - Fire grate, burner and gas water heater

Info

Publication number: CN218511199U
Application number: CN202222537520.9U
Authority: CN
Inventors: 卢楚鹏; 顾玉强; 陈露; 李新学
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-02-21
Anticipated expiration: 2032-09-22

Abstract

The utility model relates to a fire row, combustor and gas hot water system, wherein, fire row includes main part and flame stabilizing piece, be provided with in the main part and draw and penetrate the passageway, the interval is provided with a plurality ofly and draws the fire hole that penetrates the passageway intercommunication in the main part, the relative both sides of main part are provided with the flame stabilizing piece, the neighbouring fire hole of flame stabilizing piece, the interval sets up a plurality of first gas pockets and a plurality of second gas pocket on the flame stabilizing piece, all first gas pockets all are located the top of second gas pocket, and the size of first gas pocket is greater than the size of second gas pocket. Through setting up first gas pocket and second gas pocket on the flame stabilizing piece to increase secondary air and the mixed intensity of natural gas and time, improved the combustion efficiency of gas in this fire row. And the air flow introduced from the second air hole is weaker than the air flow introduced from the first air hole, the disturbance to the flame root is small, and the disturbance to the flame root can be reduced, so that the intensity and the stability of the flame of the fire grate are higher.

Description

Fire grate, burner and gas water heater

Technical Field

The utility model relates to hot water equipment technical field especially relates to a fire row, combustor and gas hot water system.

Background

The gas water heating device is an indispensable product in the home of consumers, the burner is an important part of the gas water heating device, and the performance stability of the burner plays an important role in the performance of the whole gas water heating device.

The combustor of gas hot water system comprises a plurality of fire row that set up side by side, and the air passes through the injection port that the fire was arranged and gets into the mixing chamber that the fire was arranged and mix with the gas and form mixed gas, and the mixed gas flows to the fire hole burning at fire row top again. In order to ensure the stability of flame combustion at the fire hole, flame stabilizing pieces are generally arranged at two opposite sides of the fire grate. The prior art has the following defects: after the flame stabilizing piece is arranged on the fire grate, the flame stabilizing piece can block the circulation of air, so that the mixing intensity and time of secondary air and flame are reduced, and the combustion efficiency of the gas water heating device is reduced.

SUMMERY OF THE UTILITY MODEL

One of the technical problems solved by the present invention is to provide a fire grate, which can ensure the flame stability of fire holes, and the mixing time of secondary air and flame is longer.

The second technical problem solved by the present invention is to provide a burner, which has high flame stability and vigorous flame combustion.

The third technical problem solved by the present invention is to provide a gas water heater, which has high gas combustion efficiency.

The first technical problem is solved by the following technical scheme:

the utility model provides a fire grate, includes main part and flame stabilizing piece, be provided with in the main part and draw and penetrate the passageway, the interval is provided with in the main part a plurality of with draw the fire hole that penetrates the passageway intercommunication, the relative both sides of main part are provided with the flame stabilizing piece, the flame stabilizing piece is close to the fire hole, the interval sets up a plurality of first gas pockets and a plurality of second gas pocket on the flame stabilizing piece, all first gas pocket all is located the top of second gas pocket, just the size of first gas pocket is greater than the size of second gas pocket.

The technical problem is solved by the following technical scheme: through setting up first gas pocket and second gas pocket on the flame stabilizing piece to supply air to the flame through first gas pocket and second gas pocket, thereby increase secondary air and natural gas mixing intensity and time, improved the combustion efficiency of gas in this fire row. The first air hole is positioned above the second air hole, and the size of the first air hole is larger than that of the second air hole, so that the air flow introduced into the second air hole is weaker than that introduced into the first air hole, the disturbance to the root of the flame is small, the mixing time of air and natural gas can be prolonged through the design, the disturbance to the root of the flame can be reduced, and the strength and the stability of the fire row flame can be improved.

In one embodiment, the flame holding sheet is further provided with a third air hole, and the first air hole and the second air hole are communicated through the third air hole.

In one embodiment, the size of the end of the third air hole communicating with the first air hole is gradually reduced toward the size of the end of the third air hole communicating with the second air hole.

In one embodiment, the width of the hole wall of the first air hole far away from the fire hole is L1, the width of the hole wall of the second air hole near the fire hole is L2, and L1/L2 is more than 1 and less than or equal to 2.

In one embodiment, the first air hole and the second air hole are arranged on the flame stabilizing sheet in a staggered mode.

In one embodiment, the flame holding pieces are obliquely arranged towards the outer side of the main body, and one side surfaces, adjacent to the fire holes, of the flame holding pieces are arc-shaped surfaces.

In one embodiment, the arc angle of the arc-shaped surface is alpha, and the angle is more than or equal to 15 degrees and less than or equal to 90 degrees.

In one embodiment, a plurality of flame stabilizing sheets are arranged on the same side of the main body, all the flame stabilizing sheets are arranged at intervals along the length direction of the main body, and a ventilation air passage is formed between every two adjacent flame stabilizing sheets.

In one embodiment, a notch is formed in one side, far away from the main body, of the flame stabilizing piece, the notch penetrates through the main body along the thickness of the notch, and the notch is spaced from the first air hole and the second air hole respectively.

The second technical problem is solved by the following technical solutions:

a combustor comprises the fire grate.

The technical problem is solved by the following technical scheme: this combustor is arranged through using above-mentioned fire, and because this fire is arranged can increase the mixing time of secondary air and flame, can also avoid the root of the excessive disturbance flame of secondary air simultaneously to the flame that makes the combustor that uses this fire to arrange is more steady, and flame burning is more flourishing.

The third technical problem is solved by the following technical scheme:

a gas water heating device comprises the burner.

The technical problem is solved by the following technical scheme: the burner is applied to the gas water heating device, and the mixing time of secondary air and flame can be prolonged by the burner, so that the flame combustion efficiency of the gas water heating device is improved.

Drawings

Fig. 1 is a schematic structural view of a fire grate according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a cross-sectional view of a fire grate in an embodiment of the invention;

fig. 4 is a schematic structural view of a flame holding sheet according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a flame holding sheet according to another embodiment of the present invention.

Description of reference numerals:

1. a main body; 11. an injection passage; 12. fire holes; 13. an ejector body; 131. an air inlet; 14. a fire plate; 141. a first inclined plane; 142. a second inclined plane; 2. a flame stabilizing sheet; 21. a first air hole; 22. a second air hole; 23. a third air hole; 24. an arc-shaped surface; 25. a ventilation air passage; 26. and (4) a notch.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and operate, and thus, should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 and 2, the embodiment of the utility model provides a fire grate includes main part 1 and flame stabilizing piece 2, be provided with in the main part 1 and draw and penetrate passageway 11, the interval is provided with a plurality of holes 12 with drawing the fire that penetrates passageway 11 intercommunication in the main part 1, the relative both sides of main part 1 are provided with flame stabilizing piece 2, flame stabilizing piece 2 is close to hole 12, draw and penetrate passageway 11 and can carry the gas to hole 12 department of a fire and burn, and form flame in hole 12 of a fire, and flame stabilizing piece 2 is located the both sides of main part 1 and can protect flame, avoid the air current to disturb flame, thereby guarantee the stability of flame.

Wherein, set up a plurality of first gas holes 21 and a plurality of second gas hole 22 at the interval on flame stabilizing piece 2, all first gas holes 21 all are located the top of second gas hole 22, and the size of first gas hole 21 is greater than the size of second gas hole 22. The first air hole 21 and the second air hole 22 are arranged on the flame stabilizing sheet 2, so that air is supplemented to the flame through the first air hole 21 and the second air hole 22, the mixing intensity and time of secondary air and the flame are increased, the combustion of unburned gas in the flame is promoted, and the combustion efficiency of gas in the fire row is improved. The first air holes 21 are positioned above the second air holes 22, and the size of the first air holes 21 is larger than that of the second air holes 22, so that the air flow introduced into the second air holes 22 is weaker than that introduced into the first air holes 21, the disturbance to the root of the flame is small, the mixing time of air and the natural gas can be prolonged through the design, the disturbance to the root of the flame can be reduced, and the strength and the stability of the jet flame of the fire grate can be improved.

In this embodiment, the first air hole 21 and the second air hole 22 are both circular holes, and the diameter of the first air hole 21 is larger than that of the second air hole 22, so that the circular holes have a simple structure and are convenient to process.

In one embodiment, the first air holes 21 and the second air holes 22 are tapered holes, and the first air holes 21 and the second air holes 22 are both wide at the top and narrow at the bottom, and the first air holes 21 are both high in air flow at the upper part and low in air flow at the lower part, so that disturbance of air to the flame root is reduced.

Of course, in other embodiments, the first air hole 21 and the second air hole 22 are holes of other shapes. Illustratively, the first air hole 21 is a circular hole, and the second air hole 22 is a tapered hole; or the first air hole 21 is a triangular hole and the second air hole 22 is a rectangular hole, which is not limited to this embodiment.

In this embodiment, the first air holes 21 and the second air holes 22 are arranged on the flame stabilizing sheet 2 in a staggered manner, so that the air introduced from the first air holes 21 and the second air holes 22 flows into the flame more uniformly, and the flame and the air are mixed more sufficiently.

In one embodiment, as shown in fig. 4, a third air hole 23 is further disposed on the flame stabilizing sheet 2, and the first air hole 21 and the second air hole 22 are communicated through the third air hole 23. The speed of the air flow is further increased by providing the third air holes 23, thereby enhancing the mixing of the secondary air with the flame.

Further, the size of the end of the third air hole 23 communicating with the first air hole 21 is gradually decreased toward the size of the end of the third air hole 23 communicating with the second air hole 22, and the third air hole 23 is a divergent hole having a wide top and a narrow bottom, so that the air flow area of the upper portion of the third air hole 23 is larger than the air flow speed of the lower portion. The air mixing can be enhanced, and the disturbance of the flame root can be reduced.

Specifically, the width of the hole wall of the first air hole 21 far away from the fire hole 12 is L1, the width of the hole wall of the second air hole 22 near the fire hole 12 is L2, and L1/L2 is more than 1 and less than or equal to 2. The communication of the first air hole 21, the second air hole 22 and the third air hole 23 forms a tapered hole, so that the whole air hole structure is gradually expanded; on one hand, the conical hole structure is convenient for processing and manufacturing the flame stabilizing sheet 2, and the processing cost is reduced; on the other hand, the design does not result in the open area of the tapered holes being too large to cause the flame to be blown out.

In this embodiment, as shown in fig. 3, the flame holding plate 2 is inclined toward the outer side of the main body 1, and one side surface of the flame holding plate 2 adjacent to the fire hole 12 is an arc surface 24. Through set up the arcwall face 24 structure that has certain radian on flame stabilizing piece 2, the air current can form at flame stabilizing piece 2 and reach the effect, makes the air paste tight flame stabilizing piece 2 and removes, simultaneously because the existence of second gas pocket 22 can supply the flame inside with the air to further promote combustion efficiency.

The enoda effect refers to a tendency of a fluid (water flow or air flow) to flow away from an original flow direction and follow a convex object surface. When there is surface friction between the fluid and the surface of the object over which it flows, the flow rate of the fluid is slowed. As long as the curvature of the surface of the object is not too large, the reduction of the flow velocity causes the fluid to be adsorbed on the surface of the object to flow according to the bernoulli principle in fluid mechanics.

Preferably, one end of the flame holding piece 2 far away from the main body 1 is bent towards the outer side of the main body 1, and the flame holding piece 2 is bent to form the flame holding piece 2 into an arc-shaped plate, so that one side surface of the flame holding piece 2, which is close to the fire hole 12, is an arc-shaped surface 24. The flame stabilizing piece 2 formed by bending has thinner thickness and lighter weight.

In other embodiments, the flame holder 2 is a sector plate, and the side of the sector plate adjacent to the fire hole 12 is an arc-shaped surface 24.

Preferably, the arc angle of the arc surface 24 is alpha, which is more than or equal to 15 degrees and less than or equal to 90 degrees. The curvature of the arc angle in the range cannot be too large, if the arc angle is too large, the downward flow speed of air is influenced, the flow of secondary air is influenced, and if the arc angle is too small, the air cannot be tightly attached to the arc surface 24 of the flame stabilizing piece 2 to move.

In this embodiment, as shown in fig. 1, a plurality of flame holding pieces 2 are disposed on the same side of the main body 1, all the flame holding pieces 2 are disposed at intervals along the length direction of the main body 1, and a ventilation air passage 25 is formed between two adjacent flame holding pieces 2, so that secondary air can flow to the fire holes 12 from the ventilation air passage 25, thereby increasing the mixing strength of air and flame.

Specifically, a plurality of fire holes 12 constitute the fire hole cluster, and multiunit fire hole cluster interval sets up along the length direction interval of main part 1, and every fire hole cluster corresponds and is provided with two flame stabilizing pieces 2, and two flame stabilizing pieces 2 are located body width direction's both sides, protects the flame of flame cluster through two flame stabilizing pieces 2.

In another embodiment, as shown in fig. 5, a notch 26 for increasing air circulation is provided on a side of the flame holding plate 2 away from the main body 1, and the notch 26 is provided throughout the thickness thereof. Through set up breach 26 on flame stabilizing piece 2, reduced flame stabilizing piece 2 block the area to reduce flame stabilizing piece 2 and to secondary air's effect of blockking, thereby strengthened secondary air and the mixture of not burning gas, improved the combustion efficiency of gas.

Preferably, the notch 26 is provided in the middle of the flame holding plate 2, so that the flame holes 12 located at both sides in a group of flame hole clusters can still be protected by the flame holding plate 2 to stabilize the combustion, and the flame holes 12 in the middle part are not shielded by the flame holding plate 2, and the mixing of the secondary air and the unburnt air is strengthened, so that the combustion flame of the whole flame hole cluster is strengthened.

In this embodiment, as shown in fig. 1 and 3, the main body 1 includes an injection body 13 and a fire plate 14, the injection passage 11 is disposed in the injection body 13, the injection body 13 is provided with an air inlet 131 and an air outlet which are communicated with the injection passage 11, the fire plate 14 is covered at the air outlet, all the fire holes 12 are disposed on the fire plate 14 at intervals, and the flame stabilizing sheet 2 is disposed on the injection body 13. The mixed gas enters the injection passage 11 from the gas inlet 131, is conveyed to the gas outlet through the injection passage 11, and is combusted in the fire holes 12 on the fire plate 14 to generate flame.

Specifically, the fire plate 14 is provided with a V-shaped inclined surface, specifically, the V-shaped inclined surface comprises a first inclined surface 141 and a second inclined surface 142 which are connected at an included angle, fire holes 12 are formed in the first inclined surface 141 and the second inclined surface 142, and the fire holes 12 in part of the first inclined surface 141 and the second inclined surface 142 are communicated, so that the air flows of different fire holes 12 form mutual interference, the ejection speed of the mixed gas from the fire holes 12 is reduced, and stable combustion flame is formed.

Preferably, the included angle between the first inclined surface 141 and the second inclined surface 142 is 10 ° to 30 °. The included angle between the first inclined surface 141 and the second inclined surface 142 in this range is favorable for mixing of the fuel gas and the secondary air.

Specifically, draw the body 13 and draw including two and draw and penetrate the piece, draw two and penetrate the piece punching press back combination and form and draw and penetrate passageway 11, stamping forming draw the body 13 structural strength higher, not fragile.

Preferably, the flame stabilizing piece 2 is integrally formed by bending the injection piece.

The utility model also provides a combustor, and because this fire row can increase the mixing time of secondary air and flame, can also avoid the root of the excessive disturbance flame of secondary air simultaneously to the flame that makes the combustor of using this fire row is more steady, and flame burning is more vigorous.

The utility model also provides a gas hot water system, including body and above combustor, the hot ware that dies sets up at this internally. This gas hot water gas device uses this combustor because the combustor can increase the mixing time of secondary air and flame to improve this gas hot water gas device's flame combustion efficiency.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The detailed description of the above embodiments only expresses several embodiments of the present invention, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a fire grate, includes main part (1) and flame stabilizing piece (2), be provided with in main part (1) and draw and penetrate passageway (11), main part (1) go up the interval be provided with a plurality of with draw fire hole (12) that penetrate passageway (11) intercommunication, the relative both sides of main part (1) are provided with flame stabilizing piece (2), flame stabilizing piece (2) are close to fire hole (12), a serial communication port, the interval is provided with a plurality of first gas ports (21) and a plurality of second gas pocket (22) on flame stabilizing piece (2), all first gas port (21) all are located the top of second gas pocket (22), just the size of first gas port (21) is greater than the size of second gas pocket (22).

2. The fire row according to claim 1, characterized in that a third air hole (23) is further arranged on the flame holding sheet (2), and the first air hole (21) and the second air hole (22) are communicated through the third air hole (23).

3. The fire grate of claim 2, wherein the size of the end of the third air hole (23) communicating with the first air hole (21) is gradually reduced toward the end of the third air hole (23) communicating with the second air hole (22).

4. The fire grate of claim 3, wherein the width of the wall of the first air hole (21) far away from the fire hole (12) is L1, and the width of the wall of the second air hole (22) near the fire hole (12) is L2, and 1 < L1/L2 ≦ 2.

5. Fire row according to claim 1, characterized in that the first air holes (21) and the second air holes (22) are arranged offset on the flame holder (2).

6. Fire row according to any of claims 1-5, characterized in that the flame holding tabs (2) are arranged obliquely towards the outside of the body (1), the side of the flame holding tabs (2) adjacent to the fire hole (12) being an arc-shaped face (24).

7. A fire grate according to claim 6, characterized in that the arc angle of the arc-shaped surface (24) is α,15 ° ≦ α ≦ 90 °.

8. The fire grate of any one of claims 1 to 5, characterized in that a plurality of flame holding pieces (2) are arranged on the same side of the main body (1), all the flame holding pieces (2) are arranged at intervals along the length direction of the main body (1), and a ventilation air passage (25) is formed between two adjacent flame holding pieces (2).

9. A fire grate according to any one of claims 1-5, characterized in that a notch (26) is provided in the side of the flame holding plate (2) facing away from the main body (1), said notch (26) being provided through its thickness, said notch (26) being spaced from the first air hole (21) and the second air hole (22), respectively.

10. A burner comprising a fire grate as claimed in any one of claims 1 to 9.

11. A gas-fired water heating apparatus comprising a burner as claimed in claim 10.