Fire grate and gas water heater

Abstract

This utility model discloses a burner and a gas water heater. The burner includes a first burner body and a gas passage and a burner hole structure disposed on the burner body. The burner hole structure is connected to the gas outlet of the gas passage, and the gas inlet of the gas passage is connected to the external gas supply structure of the burner. The burner hole structure is arranged from left to right as a left burner hole area, a middle burner hole area, and a right burner hole area. The gas outlet is located near the left burner hole area. The total area of ​​the burner hole structure is S, the area of ​​the left burner hole area is S1, the area of ​​the right burner hole area is S2, and the area of ​​the middle burner hole area is S3, where S1 + S2 + S3 = S. Multiple left burner holes are opened on the left burner hole area. The opening ratio K1 of the left burner hole area and the opening ratio K2 of the right burner hole area are both greater than the opening ratio K3 of the middle burner hole area. This utility model proposes a burner in which the gas distribution on the left and right sides of the burner is more uniform, resulting in a more uniform temperature in the combustion chamber and higher heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, and in particular to a burner and a gas water heater. Background Technology

[0002] Existing forced draft gas water heaters have a problem where the burner burners turn yellow in some areas after combustion. This problem is mainly due to the fact that the kinetic energy of the gas (i.e., methane) in the burner burner is not uniformly converted into pressure energy. The gas concentration on one side is higher (the left side is higher than the right side), which leads to uneven temperature in the combustion chamber, resulting in reduced heat exchange efficiency and causing the burner burners to turn yellow in some areas.

[0003] Therefore, there is an urgent need for a fire briquette to solve the above problems. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a burner with a more uniform gas distribution on the left and right sides, which makes the temperature in the combustion chamber more uniform and the heat exchange efficiency higher.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A burner includes a first burner body and a gas passage and a burner hole structure disposed on the burner body. The burner hole structure is connected to the outlet of the gas passage, and the inlet of the gas passage is connected to an external gas supply structure of the burner. The burner hole structure has a left burner hole area, a middle burner hole area, and a right burner hole area arranged sequentially from left to right. The outlet is located near the left burner hole area. The total area of ​​the burner hole structure is S, the area of ​​the left burner hole area is S1, the area of ​​the right burner hole area is S2, the area of ​​the middle burner hole area is S3, and S1 + S2 + S3 = S. Multiple left-side flame holes are formed in the flame hole area, with a total area of ​​S11 and an opening ratio of K1 = S11 / S1. Multiple right-side flame holes are formed in the right-side flame hole area, with a total area of ​​S21 and an opening ratio of K2 = S21 / S2. Multiple middle-side flame holes are formed in the middle-side flame hole area, with a total area of ​​S31 and an opening ratio of K3 = S31 / S3. The opening ratios K1 of the left-side flame hole area and K2 of the right-side flame hole area are both greater than the opening ratio K3 of the middle-side flame hole area.

[0007] Optionally, S1 > S3, S2 > S3.

[0008] Alternatively, S1 = S2.

[0009] Optionally, S1 is 40%S to 45%S, S2 is 40%S to 45%S, and S3 is 30%S to 35%S.

[0010] Optionally, K1 is 30%-35%, K2 is 30%-35%, and K3 is 10%-15%.

[0011] Optionally, the flame hole structure is located above the gas passage. The gas passage includes a gas diffusion section and a gas bend section. The right end of the gas diffusion section is connected to the air inlet, the left end of the gas diffusion section is connected to the lower end of the gas bend section, and the upper end of the gas bend section is connected to the air outlet. The inner diameter of the gas diffusion section gradually increases from right to left. The inner wall of the middle part of the gas bend section facing the gas diffusion section is an arc surface, and the arc surface is recessed in the direction away from the gas diffusion section. The volume of the gas diffusion section is V1, and the volume of the gas bend section is V2, where V1 is 0.9V2-0.93V2.

[0012] Optionally, the diameter of the air inlet is the same as the diameter of the air outlet.

[0013] Optionally, it also includes a second burner, which includes a burner body and a gas passage and a burner hole structure disposed on the burner body. The burner hole structure is connected to the gas outlet of the gas passage, and the gas inlet of the gas passage is connected to the external gas supply structure of the burner. The burner hole structure is provided with a left burner hole area, a middle burner hole area and a right burner hole area from left to right. The opening ratio of the left burner hole area, the middle burner hole area and the right burner hole area is the same.

[0014] Optionally, both the first burner and the second burner are provided with multiple burners.

[0015] Another aspect of the present invention provides a gas water heater, including the aforementioned burner.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] This invention proposes a burner where the opening ratio K3 of the burner holes in the central burner hole region is lower than that in the left burner hole region (K1) and the right burner hole region (K2), allowing more gas to flow to the right burner hole region. This results in more gas being available in the right burner hole region, thereby improving the uniformity of combustion. The gas distribution on the left and right sides of the burner is relatively uniform, resulting in a more uniform temperature in the combustion chamber and higher heat exchange efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the gas concentration distribution at the burner hole structure in a firebox in the prior art;

[0019] Figure 2 This is a three-dimensional structural diagram of the fire briquette provided in a specific embodiment of the present utility model;

[0020] Figure 3 This is a three-dimensional structural schematic diagram of the first fire bar provided in a specific embodiment of this utility model;

[0021] Figure 4 yes Figure 3 Top view;

[0022] Figure 5 yes Figure 4 Sectional view at point AA;

[0023] Figure 6 This is a schematic diagram of the gas concentration distribution at the burner hole structure of the burner provided in a specific embodiment of this utility model.

[0024] In the picture:

[0025] 101. First burner; 102. Second burner; 111. Burner body; 12. Gas passage; 121. Inlet; 122. Outlet; L1. Gas diffuser section; L2. Gas turning section; 13. Burner hole structure; 131. Left burner hole area; 1311. Left burner hole; 132. Right burner hole area; 1321. Right burner hole; 133. Middle burner hole area; 1331. Middle burner hole;

[0026] 2. Shell. Detailed Implementation

[0027] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0028] Please refer to Figures 1-4This utility model provides a burner, including a first burner 101. The first burner 101 includes a burner body 111 and a gas passage 12 and a burner hole structure 13 disposed on the burner body 111. The burner hole structure 13 is connected to the gas outlet 122 of the gas passage 12, and the gas inlet 121 of the gas passage 12 is connected to the external gas supply structure of the burner. The burner hole structure 13 is provided with a left burner hole area 131, a middle burner hole area 133 and a right burner hole area 132 from left to right. The air outlet 122 is located near the left burner area 131. The total area of ​​the burner structure 13 is S, the area of ​​the left burner area 131 is S1, the area of ​​the right burner area 132 is S2, and the area of ​​the middle burner area 133 is S3, where S1 + S2 + S3 = S. Multiple left burners 1311 are provided on the left burner area 131, and the total area of ​​the multiple left burners 1311 is S11. The opening ratio of the left burner area 131 is K1 = S11 / S1. Multiple right-side flame holes 1321 are formed in the lower flame hole region 132, with a total area of ​​S21. The opening ratio of the right-side flame hole region 132 is K2 = S21 / S2. Multiple middle flame holes 1331 are formed in the middle flame hole region 133, with a total area of ​​S31. The opening ratio of the middle flame hole region 133 is K3 = S31 / S3. The opening ratio of the left flame hole region 131 is K1, and the opening ratio of the right flame hole region 132 is... The opening ratio K2 is greater than the opening ratio K3 of the central burner region 133. This allows the gas flowing out of the gas passage 12 to flow out of the gas outlet 122. Since the opening ratio K3 of the central burner region 133 is lower than the opening ratio K1 of the left burner region 131 and the opening ratio K2 of the right burner region 132, more gas can flow to the right burner region 132, thereby allowing the right burner region 132 to obtain more gas and improve the uniformity of combustion.

[0029] Optionally, S1 > S3 and S2 > S3 to avoid the overall opening ratio of the first burner 101 being too low and to maintain a high combustion load.

[0030] Optionally, in this embodiment, S1 = S2, which has a simple structure and is easy to manufacture using molds.

[0031] Optionally, S1 is 40%S to 45%S, S2 is 40%S to 45%S, and S3 is 30%S to 35%S, so as to ensure the combustion load and to better balance the gas concentration in the right burner area 132.

[0032] Optionally, K1 is 30%-35%, K2 is 30%-35%, and K3 is 10%-15% to improve the combustion uniformity at the fire hole structure 13.

[0033] Optionally, the burner structure 13 is located above the gas passage 12. The gas passage 12 includes a gas diffuser section L1 and a gas transition section L2. The right end of the gas diffuser section L1 is connected to the air inlet 121, the left end of the gas diffuser section L1 is connected to the lower end of the gas transition section L2, and the upper end of the gas transition section L2 is connected to the air outlet 122. The inner diameter of the gas diffuser section L1 gradually increases from right to left. The inner wall of the middle part of the gas transition section L2 facing the gas diffuser section L1 is an arc surface, and this arc surface is recessed in the direction away from the gas diffuser section L1. The volume of the gas diffuser section L1 is V1, and the volume of the gas transition section L2 is V2, where V1 is 0.9V2-0.93V2. In this way, it can be ensured that the gas has sufficient space in the gas diffuser section L1 to convert kinetic energy into pressure energy, thereby allowing the gas to be ejected more evenly from the burner structure 13 and improving combustion uniformity.

[0034] Optionally, the diameter of the air inlet 121 is the same as the diameter of the air outlet 122 to reduce the kinetic energy of the gas at the air outlet 122, so that the gas can flow out more evenly from the left burner hole 1311, the middle burner hole 1331 and the right burner hole 1321.

[0035] Optionally, it also includes a second burner 102, which includes a burner body 111 and a gas passage 12 and a burner hole structure 13 disposed on the burner body 111. The burner hole structure 13 is connected to the gas outlet 122 of the gas passage 12, and the gas inlet 121 of the gas passage 12 is connected to the external gas supply structure of the burner. The burner hole structure 13 is provided with a left burner hole area 131, a middle burner hole area 133 and a right burner hole area 132 from left to right. The opening ratio of the left burner hole area 131, the middle burner hole area 133 and the right burner hole area 132 is the same, that is, the burner holes on the second burner 102 are evenly distributed, so that when used in combination with the first burner 101, the overall load of the burner can be avoided to be too low, and the gas concentration on the right side of the burner can be avoided to be too low. Furthermore, by setting up a first burner 101 and a second burner 102, the first burner 101 and the second burner 102 can be used in combination. When the combustion load is low, only the first burner 101 needs to be activated; when the combustion load is high, both the first burner 101 and the second burner 102 can be activated simultaneously. In this way, when the combustion load is low, only the first burner 101 is working, thereby effectively reducing the noise during burner operation.

[0036] Optionally, multiple first burner bars 101 and second burner bars 102 are provided.

[0037] like Figure 6 As shown, in this embodiment, after the above settings, the concentration distribution of the fuel gas (i.e., methane) in the horizontal direction from left to right in the fire hole structure 13 is more balanced.

[0038] Optionally, it also includes a housing, on which both the first burner 101 and the second burner 102 are mounted.

[0039] Another aspect of the present invention provides a gas water heater, including the aforementioned burner.

[0040] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A fire grill, characterized in that, The system includes a first burner (101), which comprises a burner body (111) and a gas passage (12) and a burner hole structure (13) disposed on the burner body (111). The burner hole structure (13) is connected to the gas outlet (122) of the gas passage (12), and the gas inlet (121) of the gas passage (12) is connected to the external gas supply structure of the burner. The burner hole structure (13) is arranged sequentially from left to right. The structure includes a left burner area (131), a middle burner area (133), and a right burner area (132). The air outlet (122) is located near the left burner area (131). The total area of ​​the burner structure (13) is S, the area of ​​the left burner area (131) is S1, the area of ​​the right burner area (132) is S2, and the area of ​​the middle burner area (133) is S3. S1 + S2 + S3 = S, a plurality of left-side flame holes (1311) are provided on the left-side flame hole region (131), the total area of ​​the plurality of left-side flame holes (1311) is S11, and the opening ratio of the left-side flame hole region (131) is K1=S11 / S1. A plurality of right-side flame holes (1321) are provided on the right-side flame hole region (132), the total area of ​​the plurality of right-side flame holes (1321) is S21, and the opening ratio of the right-side flame hole region (132) is K1=S11 / S1. K2=S21 / S2, a plurality of central fire holes (1331) are provided on the central fire hole region (133), the total area of ​​the plurality of central fire holes (1331) is S31, the opening ratio of the central fire hole region (133) is K3=S31 / S3, the opening ratio K1 of the left fire hole region (131) and the opening ratio K2 of the right fire hole region (132) are both greater than the opening ratio K3 of the central fire hole region (133).

2. The fire grill according to claim 1, characterized in that, S1 > S3, S2 > S3.

3. The fire grill according to claim 2, characterized in that, S1=S2.

4. The fire grill according to claim 2, characterized in that, S1 is 40%S to 45%S, S2 is 40%S to 45%S, and S3 is 30%S to 35%S.

5. The fire grill according to claim 1, characterized in that, K1 is 30%-35%, K2 is 30%-35%, and K3 is 10%-15%.

6. The fire rack according to any one of claims 1-5, characterized in that, The fire hole structure (13) is located above the gas passage (12). The gas passage (12) includes a gas diffuser section (L1) and a gas turning section (L2). The right end of the gas diffuser section (L1) is connected to the air inlet (121). The left end of the gas diffuser section (L1) is connected to the lower end of the gas turning section (L2). The upper end of the gas turning section (L2) is connected to the air outlet (122). The inner diameter of the gas diffuser section (L1) gradually increases from right to left. The inner wall of the middle part of the gas turning section (L2) facing the gas diffuser section (L1) is an arc surface, and the arc surface is recessed in the direction away from the gas diffuser section (L1). The volume of the gas diffuser section (L1) is V1, and the volume of the gas turning section (L2) is V2. V1 is 0.9V2-0.93V2.

7. The fire grill according to claim 6, characterized in that, The diameter of the air inlet (121) is the same as the diameter of the air outlet (122).

8. The fire rack according to any one of claims 1-5, characterized in that, It also includes a second burner (102), which includes a burner body (111) and a gas passage (12) and a burner hole structure (13) disposed on the burner body (111). The opening ratios of the left burner hole area (131), the middle burner hole area (133) and the right burner hole area (132) are the same.

9. The fire grill according to claim 8, characterized in that, Both the first burner (101) and the second burner (102) are provided with multiple burners.

10. A gas-fired water heater, characterized in that, Includes the fire rack as described in any one of claims 1-9.

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