Cylindrical fire grate

Abstract

The utility model discloses a cylindrical fire grate. The cylindrical fire grate comprises a fire hole wall, a sealing plate and an air inlet baffle, the fire hole wall is cylindrical, and a plurality of fire holes are evenly distributed in the circumferential direction of the fire hole wall. The sealing plate is arranged at the top of the fire hole wall and is used for forming a combustion cavity with the fire hole wall; the air inlet baffle is arranged at the bottom of the fire hole wall, and a plurality of air inlets are formed in the air inlet baffle; a fire-resistant woven mesh is further attached to the periphery of the fire hole wall and completely covers the fire holes. The mesh opening of the fire-resistant woven mesh is smaller than the aperture of the fire hole; an outer fire hole wall is further arranged outside the fire hole wall, a plurality of outer fire holes are formed in the outer fire hole wall, and a secondary mixing gap is reserved between the outer fire hole wall and the fire hole wall. The fire hole wall is provided with a plurality of uniformly distributed fire holes, and each fire hole participates in combustion, so that the combustion efficiency is high; a fire-resistant woven mesh is attached to the outer part of the fire hole wall, so that the mixed gas is fully combusted; and an outer fire hole wall forming a secondary mixing gap with the fire hole wall is additionally arranged to improve the combustion efficiency.

Description

Technical Field

[0001] The utility model relates to a fire grate, in particular to a cylindrical fire grate. Background Art

[0002] Burners are key components for the performance and efficiency of everyday products, including water heaters, and the flame grate within them is a crucial component. Existing flame grate components are mostly traditional stamped and formed, punching out key functional areas involved in combustion, such as the flow channels and burners for gas propulsion. After the gas passes through the complex flow channels and burners of the flame grate, subtle adjustments are often required to ensure flame stability, maximize thermal efficiency, and maintain a balance between flue gas and pressure differentials.

[0003] Changes in the shape of the flow channel will change the flow path, speed and direction of the gas in the fire grate, thereby affecting the combustion efficiency and flame stability. However, in actual design, it is found that if the shape of the flow channel changes too much, it may lead to insufficient combustion and inconsistent flame direction and height, which in turn leads to unqualified combustion indicators and failure to meet quality standards. If the flow channel changes too little, it cannot meet the requirements, thereby increasing the difficulty of design, increasing costs, and combustion efficiency may not be guaranteed.

[0004] Therefore, there is an urgent need for a fire grate that is simple in structure, low in cost, and can simultaneously ensure combustion efficiency. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a cylindrical fire grate with a simple structure, low processing cost, good combustion efficiency and stability.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cylindrical fire grate, comprising:

[0007] A burner wall, the burner wall being cylindrical and having a plurality of burner holes evenly distributed along the circumference of the burner wall;

[0008] a sealing plate, disposed on the top of the burner wall, for forming a combustion chamber together with the burner wall;

[0009] An air inlet baffle is arranged at the bottom of the fire port wall, and the air inlet baffle is provided with a plurality of air inlets;

[0010] When the fuel gas enters the combustion chamber through the air inlet and is evenly mixed with the air and then ignited, the plurality of fire holes evenly participate in the combustion.

[0011] Furthermore, a fire-resistant woven mesh is attached to the outer periphery of the fire port wall, and the fire hole is completely covered by the fire-resistant woven mesh; the mesh opening of the fire-resistant woven mesh is smaller than the aperture of the fire hole.

[0012] Furthermore, an outer burner wall is provided outside the burner wall, a plurality of outer fire holes are provided on the outer burner wall, and a secondary mixing gap is left between the outer burner wall and the burner wall.

[0013] Furthermore, the air inlet baffle extends from the fire port wall, and the extended portion is provided with a plurality of mounting holes.

[0014] Furthermore, the material of the burner wall is stainless steel.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] The cylindrical fire grate of the present invention has a plurality of evenly distributed fire holes opened in the circumference of the cylindrical fire mouth wall. In this way, after the gas and air are mixed and ignited, each fire hole participates in the combustion, and the airflow state inside the fire mouth wall can be kept consistent, thereby maximizing the combustion efficiency and ensuring the overall stability during combustion. In addition, a refractory woven mesh is attached to the outside of the fire mouth wall to slow down the time for the mixed gas to flow outward, so that the mixed gas burns fully. Secondly, an outer fire mouth wall can be added to form a secondary mixing gap with the fire mouth wall. By adding the secondary mixing gap, the space for the combustion reaction of the mixed gas is increased, and the combustion is uniform through the outer fire holes, further improving the combustion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the utility model is further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Cross-sectional view of CC;

[0020] Figure 3 This is a bottom view of the first embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present utility model;

[0022] Figure 5 for Figure 4 Cross-sectional view of the middle DD;

[0023] Figure 6 for Figure 5 A magnified view of part A in FIG;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the third embodiment of the present utility model;

[0025] Figure 8 for Figure 7 Cross-sectional view of EE;

[0026] Figure 9 for Figure 8 A magnified view of part B in FIG;

[0027] Among them: 1. Fire port wall; 2. Sealing plate; 3. Air inlet baffle; 4. Refractory woven mesh; 5. External fire port wall; 10. Fire hole; 11. Combustion chamber; 12. Secondary mixing gap; 30. Air inlet; 31. Mounting hole; 50. External fire hole. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0029] The utility model provides a cylindrical fire grate to solve the problem in the prior art that in order to increase the combustion efficiency of the gas in the fire grate, the design of the convection channel and the fire hole becomes more difficult and the cost becomes higher.

[0030] For ease of understanding, several embodiments are listed below for description.

[0031] Implementation

[0032] See also Figures 1 to 3 In the embodiment of the present application, a cylindrical fire grate comprises a burner wall 1, a sealing plate 2 and an air intake baffle 3; the burner wall 1 is cylindrical and has a plurality of fire holes 10 evenly distributed along the circumference of the burner wall 1; the sealing plate 2 is mounted on the top of the burner wall 1 to form a combustion chamber 11 with air intake from below with the burner wall 1; the air intake baffle 3 is disposed at the bottom of the burner wall 1 and has a plurality of evenly distributed air intakes 30;

[0033] During operation, after the gas enters the combustion chamber 11 through the air inlet 30, the gas is evenly mixed with the air in the combustion chamber 11 and then flows into the multiple fire holes 10 on the circumference of the outside of the fire port wall 1; after ignition, the mixed gas is ignited to generate flames. At this time, all the fire holes 10 will burn, and since the fire holes 10 are evenly distributed, the mixed gas in each fire hole 10 will participate in the combustion, and the airflow state inside the fire port wall 1 can be kept consistent, thereby maximizing the combustion efficiency and ensuring the overall stability during combustion.

[0034] In this embodiment, the fire mouth wall 1 is designed to be cylindrical, and a plurality of fire holes 10 are evenly distributed on the circumference of the fire mouth wall 1. The fire holes 10 on all sides can discharge fire, the combustion area is larger, and the structure is simple, which can reduce the difficulty of flow channel and fire mouth design, reduce the difficulty of stamping production, and at the same time increase the conversion of gas combustion heat energy, reduce material costs, and thus significantly reduce the number of fire exhausts in component assembly, which meets actual usage needs.

[0035] Furthermore, in this embodiment, the air intake baffle 3 extends from the four sides of the fire port wall 1, and the extending portion of the air intake baffle 3 is provided with a plurality of mounting holes 31, through which the fire grate can be conveniently installed.

[0036] Furthermore, the material of the fire port wall 1 is stainless steel, which has low cost and increases its service life.

[0037] Example 2

[0038] based on Figures 4 to 6 The difference between this embodiment and the first embodiment is that a refractory woven mesh 4 is further provided on the circumference of the outer portion of the fire port wall 1, and the refractory woven mesh 4 completely covers the plurality of fire holes 10; and the mesh opening of the refractory woven mesh 4 is smaller than the aperture of the fire hole 10, and the mesh opening of the refractory woven mesh 4 is not shown in the figure.

[0039] During operation, after the gas enters the combustion chamber 11 through the air inlet 30, the gas is evenly mixed with the air in the combustion chamber 11 and then flows to the fire holes 10 on the outer circumference of the fire port wall 1; the mixed gas is ignited, and at this time all the fire holes 10 will evenly participate in the combustion to generate flames. At the same time, due to the presence of the refractory woven mesh 4, and the mesh opening of the refractory woven mesh 4 is smaller than the fire holes 10, the mixed gas that is not fully burned can stay longer when passing between the refractory woven mesh 4 and the fire port wall 1, and then generate flames from the refractory woven mesh 4 after secondary combustion, thereby maximizing the combustion efficiency and further improving the overall stability and combustion efficiency during combustion.

[0040] Example 3

[0041] based on Figures 7 to 9 The difference between this embodiment and the first embodiment is that an outer fire port wall 5 is further provided outside the fire port wall 1, and a plurality of outer fire holes 50 are provided on the outer fire port wall 5, and a secondary mixing gap 13 is left between the outer fire port wall 5 and the fire port wall 1. The aperture of the outer fire hole 50 on the outer fire port wall 5 is not larger than the fire hole 10 on the fire port wall 1. The outer fire hole 50 in this embodiment is smaller than the aperture of the fire hole.

[0042] In this way, during operation, after the gas enters the combustion chamber 11 through the air inlet 30, the gas is evenly mixed with the air in the combustion chamber 11 and then flows to the fire holes 10 on the outer circumference of the fire port wall 1; the mixed gas is ignited, and at this time all the fire holes 10 will evenly participate in the combustion to generate flames. At the same time, since there is an outer fire port wall 5 on the outside, the mixed gas will enter the secondary mixing gap 13 at this time, and the mixed gas that is not fully burned can achieve secondary combustion after steady flow in the sufficient space of the secondary mixing gap 13; in addition, the outer fire hole is smaller than the diameter of the fire hole 10, which can also leave enough time for the mixed gas to burn, so the combustion efficiency can be maximized, and the overall stability and combustion efficiency during combustion are high, which meets the actual use needs.

[0043] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cylindrical fire grate, characterized in that: include: A burner wall (1), the burner wall (1) is cylindrical, and a plurality of fire holes (10) are evenly distributed along the circumference of the burner wall (1); A sealing plate (2) is provided on the top of the burner wall (1) and is used to form a combustion chamber (11) with the burner wall (1); An air inlet baffle (3) is arranged at the bottom of the fire port wall (1), and a plurality of air inlets (30) are formed on the air inlet baffle (3); When the fuel gas enters the combustion chamber (11) through the air inlet (30) and is evenly mixed with the air and then ignited, the plurality of fire holes (10) evenly participate in the combustion.

2. The cylindrical fire grate according to claim 1, characterized in that: A fire-resistant woven mesh (4) is also attached to the outer periphery of the fire port wall (1), and the fire-resistant woven mesh (4) completely covers the fire hole (10); the mesh opening of the fire-resistant woven mesh (4) is smaller than the aperture of the fire hole (10).

3. The cylindrical fire grate according to claim 1, characterized in that: An outer burner wall (5) is further provided outside the burner wall (1), a plurality of outer fire holes (50) are provided on the outer burner wall (5), and a secondary mixing gap (12) is left between the outer burner wall (5) and the burner wall (1).

4. The cylindrical fire grate according to claim 1, wherein: The air inlet baffle (3) extends from the fire port wall (1), and a plurality of mounting holes (31) are provided on the extended portion.

5. The cylindrical fire grate according to claim 1, characterized in that: The material of the burner wall (1) is stainless steel.

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