Air-cooled burner and gas water heater thereof

Abstract

The utility model discloses an air cooling combustor and a gas water heater thereof. The air cooling combustor comprises a combustor assembly. The periphery of the burner assembly is sleeved with the air guide assembly, the air guide assembly and the outer side wall of the burner assembly are enclosed to form an annular air duct, the air guide assembly is provided with a first end and a second end which are oppositely arranged, the first end is provided with an air inlet part and at least one first air outlet part, and the second end is provided with a second air outlet part. The second end is provided with at least one second air outlet part, and the annular air channel is communicated with the air inlet part, the first air outlet part and the second air outlet part. The air-cooled burner is simple in structure, and the temperature of the periphery of the burner assembly can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to an air-cooled burner and its gas water heater. Background Technology

[0002] Currently, air-cooled gas water heaters are gradually taking over the market. Compared with water-cooled gas water heaters, they can reduce the bypass pipe of the heat exchanger and integrate the combustion chamber cavity with the burner, which can reduce the corrosion rate of the heat exchanger and manufacturing costs. However, the wall temperature of the combustion chamber cavity of air-cooled gas water heaters is relatively high, and how to reduce the surface temperature of the cavity cavity has become a challenge for the industry.

[0003] The common method for reducing the surface temperature of the combustion chamber of an air-cooled gas water heater is to use a dual-flow channel inside the chamber, through which air is cooled. However, in some models, the temperature in the middle and upper parts of the chamber surface remains high after cooling using this method, and the temperature cannot be effectively reduced. Summary of the Invention

[0004] This invention aims to at least partially solve one of the problems existing in the prior art. To this end, this invention proposes an air-cooled burner with a simple structure that can reduce the temperature of the burner assembly's surrounding surfaces. This invention also provides a gas water heater.

[0005] The air-cooled burner described above is achieved through the following technical solution:

[0006] An air-cooled burner includes: a burner assembly; and an air guide assembly fitted around the burner assembly. The air guide assembly and the outer wall of the burner assembly enclose each other to form an annular air duct. The air guide assembly has a first end and a second end arranged opposite to each other. An air inlet and at least one first air outlet are provided on the first end, and at least one second air outlet are provided on the second end. The annular air duct is connected to the air inlet, the first air outlet and the second air outlet respectively.

[0007] In some embodiments, the first air outlet includes a plurality of first air outlet holes arranged at intervals, and the second air outlet includes a plurality of second air outlet holes arranged at intervals, wherein the diameter of the second air outlet holes is larger than the diameter of the first air outlet holes.

[0008] In some embodiments, the air guide assembly includes an air guide side plate and a U-shaped air guide main plate. The air guide side plate is connected to the outer wall of the burner assembly, and an air inlet channel is formed between the air guide side plate and the outer wall of the burner assembly. The air guide side plate is provided with the air inlet portion and at least one first air outlet portion. The air guide main plate is snapped onto the outside of the burner assembly and is connected to both the air guide side plate and the burner assembly. A U-shaped channel is formed between the air guide main plate and the outer wall of the burner assembly. The U-shaped channel communicates with the air inlet channel to form the annular air duct. At least one second air outlet portion is provided at the end of the air guide main plate away from the air guide side plate.

[0009] In some embodiments, the air inlet is disposed on the outer wall of the air guide side plate, and the first air outlet is disposed at the top and bottom of the air guide side plate respectively; the second air outlet is disposed at the top and bottom of the end of the air guide main plate away from the air guide side plate respectively.

[0010] In some embodiments, a first flange is provided at the top and bottom of the air guide side plate, close to the burner assembly, and the first flange is connected to the outer wall of the burner assembly; at least one second flange is provided at the top and bottom of the air guide main plate, close to the burner assembly, and the second flange is connected to the outer wall of the burner assembly.

[0011] In some embodiments, the main air guide plate has two protruding edges near the end facing the air guide side plate, and the air guide side plate is sandwiched between the two protruding edges and fixedly connected to the two protruding edges respectively.

[0012] In some embodiments, an upper mounting portion extending to the top of the air guide side plate is fixedly provided at the upper end of the convex edge, and a lower mounting portion extending to the bottom of the air guide side plate is fixedly provided at the lower end of the convex edge, and the air guide side plate is respectively connected and fixed to the upper mounting portion and the lower mounting portion.

[0013] In some embodiments, the main air guide plate includes two air guide sections and an air outlet section fixedly connected in a U-shape, with a second air outlet provided at the top and bottom of the air outlet section, and clearance positions provided at the top and bottom of the two air guide sections.

[0014] The gas water heater described above is achieved through the following technical solution:

[0015] A gas water heater includes: a water heater body, including a shell assembly and a heat exchange assembly, the heat exchange assembly being disposed within the shell assembly; and an air-cooled burner as described above, the air-cooled burner being disposed within the shell assembly and located at the bottom of the heat exchange assembly.

[0016] In some embodiments, a sound insulation component is also included, which is disposed within the housing assembly and connected to a first end of the air guide assembly. The sound insulation component has a vent for cold air to pass through, and the vent is connected to the air inlet.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] This utility model discloses an air-cooled burner by fitting an air guide assembly around the burner assembly, forming an annular air duct between the air guide assembly and the burner assembly. The first end of the air guide assembly has an air inlet and a first air outlet communicating with the annular air duct, and the second end of the air guide assembly has a second air outlet communicating with the annular air duct. When cold air enters the annular air duct from the air inlet, part of it flows out from the first air outlet, and the other part flows along the annular air duct and flows out from the second air outlet, thereby effectively cooling the four sides of the burner assembly. At the same time, the preheated cold air serves as the secondary air required for combustion of the burner assembly, optimizing combustion conditions and improving combustion efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the air-cooled burner in an embodiment of this utility model;

[0020] Figure 2 This is a cross-sectional view of the air-cooled burner in an embodiment of this utility model;

[0021] Figure 3 This is a left view of the air-cooled burner in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the air guide mainboard in an embodiment of this utility model;

[0023] Figure 5 This is a front view of the gas water heater in an embodiment of this utility model;

[0024] Figure 6 This is a rear view of the gas water heater in this embodiment of the present invention, with the outer casing assembly removed.

[0025] In the diagram: 1-burner assembly, 11-bottom air inlet; 2-air guide assembly, 21-air guide side plate, 210-air inlet channel, 211-first air outlet, 212-first flange, 22-air guide main board, 220-U-shaped channel, 2201-second flange, 221-air outlet section, 2211-second air outlet, 222-air guide section, 2221-protruding edge, 2222-upper mounting part, 2223-lower mounting part, 2224-clearance space;

[0026] 3-Outer shell assembly; 4-Heat exchange assembly; 5-Sound insulation assembly; 51-Ventilation opening; 52-Noise reduction hole. 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] refer to Figure 1-3 This embodiment provides an air-cooled burner, including a burner assembly 1 and an air guide assembly 2. The burner assembly 1 has a bottom air inlet 11 and a top smoke outlet (not shown in the figure). The air guide assembly 2 is fitted around the burner assembly 1 and connected and fixed to the burner assembly 1. The air guide assembly 2 and the outer wall of the burner assembly 1 enclose each other to form an annular air duct (not shown in the figure). The air guide assembly 2 has a first end and a second end arranged opposite to each other. The first end has an air inlet and at least one first air outlet, and the second end has at least one second air outlet. The annular air duct is connected to the air inlet, the first air outlet and the second air outlet respectively. In this embodiment, the air guide assembly 2 is fitted around the middle periphery of the burner assembly 1 in the height direction. The first end and the second end refer to the rear end and the front end of the air guide assembly 2. The first air outlet is provided at the top and bottom of the first end of the air guide assembly 2, and the second air outlet is provided at the bottom and top of the second end of the air guide assembly 2.

[0029] When cold air enters the annular air duct from the air inlet, part of the cold air flows out from the first air outlet, and the other part flows along the annular air duct and flows out from the second air outlet. When the cold air flows through the annular air duct, it exchanges heat with the outer wall of the burner assembly 1, thereby effectively cooling the four sides of the burner assembly. At the same time, the preheated cold air can flow into the burner assembly 1 from the bottom air inlet 11 to supplement the secondary air required for combustion, which is conducive to optimizing combustion conditions and improving combustion efficiency.

[0030] Specifically, the first air outlet includes a plurality of first air outlet holes 211 arranged at intervals; the second air outlet includes a plurality of second air outlet holes 2211 arranged at intervals. The diameter of the second air outlet holes 2211 is larger than the diameter of the first air outlet holes 211. This allows cold air to enter the annular air duct, with a small portion flowing out from the first air outlet holes 211 to cool the rear side wall of the burner assembly 1, and the majority flowing along the annular air duct sequentially through the left and right sides and the front of the burner assembly 1, and finally flowing out from the second air outlet holes 2211, thereby achieving cooling of the left and right sides and the front of the burner assembly 1.

[0031] refer to Figure 1-4The air guide assembly 2 includes an air guide side plate 21 and a U-shaped air guide main plate 22. The air guide side plate 21 is located behind the burner assembly 1 and is fixed to the outer wall of the burner assembly 1. An air inlet channel 210 is formed between the air guide side plate 21 and the outer wall of the burner assembly 1. The air guide side plate 21 has an air inlet and at least one first air outlet. The air guide main plate 22 is inserted into the burner assembly 1 from front to back and is connected to the left and right ends of the air guide side plate 21 and the outer wall of the burner assembly 1, respectively. A U-shaped channel 220 is formed between the air guide main plate 22 and the outer wall of the burner assembly 1. The U-shaped channel 220 is connected to the air inlet channel 210 to form an annular air duct. At least one second air outlet is provided at the end of the air guide main plate 22 away from the air guide side plate 21, that is, at least one second air outlet is provided at the front end of the air guide main plate 22.

[0032] An air inlet is located on the outer wall of the air guide side plate 21, and includes multiple air inlets spaced apart. First air outlets are located at the top and bottom of the air guide side plate 21, allowing cold air to enter the annular air duct from the air inlet. A portion of the cold air then flows out from the first air outlets at the top and bottom of the air guide side plate 21, cooling the upper and lower ends of the burner assembly 1, thereby reducing the temperature of the entire rear outer wall of the burner assembly 1. Second air outlets are located at the top and bottom of the end of the main air guide plate 22 furthest from the air guide side plate 21, i.e., at the top and bottom of the front end of the main air guide plate 22. This allows cold air to flow along the annular air duct to the front of the burner assembly 1, and then flow out from the second air outlets at the top and bottom of the main air guide plate 22, cooling the upper and lower ends of the front of the burner assembly 1, thereby reducing the temperature of the entire front outer wall of the burner assembly 1.

[0033] The air guide side plate 21 has a first flange 212 at its top and bottom, close to the back of the burner assembly 1. The first flange 212 is detachably connected to the outer wall of the burner assembly 1 by screws, so as to securely and reliably install and fix the air guide side plate 21 to the back of the burner assembly 1. The air guide main plate 22 has at least one second flange 2201 at its top and bottom, close to the burner assembly 1. The second flange 2201 is detachably connected to the outer wall of the burner assembly 1 by screws, so as to securely and reliably install and fix the air guide main plate 22 to the front and left and right sides of the burner assembly 1.

[0034] In addition, two protruding edges 2221 are provided at the end of the main air guide plate 22 near the air guide side plate 21. The air guide side plate 21 is sandwiched between the two protruding edges 2221 and is fixedly connected to the two protruding edges 2221 respectively, so that the main air guide plate 22 and the air guide side plate 21 are reliably connected as one unit. In this embodiment, an upper mounting part 2222 extending to the top of the air guide side plate 21 is fixedly provided at the upper end of the protruding edge 2221, and a lower mounting part 2223 extending to the bottom of the air guide side plate 21 is fixedly provided at the lower end of the protruding edge 2221. The air guide side plate 21 is connected and fixed to the upper mounting part 2222 and the lower mounting part 2223 respectively by welding.

[0035] refer to Figure 4 The main air guide plate 22 includes two air guide sections 222 and an air outlet section 221 fixedly connected in a U-shape. Second air outlet portions are provided at the top and bottom of the air outlet section 221. In this embodiment, the air outlet section 221 includes a front surface, a bottom surface, and a top surface. The bottom and top surfaces are formed by bending the upper and lower ends of the front surface of the air outlet section integrally towards the burner assembly 1. Second air outlet portions are provided on the bottom and top surfaces of the air outlet section, and a second flange 2201 is fixedly provided at one end of the bottom and top surfaces of the air outlet section near the burner assembly 1.

[0036] Clearance positions 2224 are provided at the top and bottom of the two air guide sections 222, respectively. These clearance positions 2224 are configured to be inserted into the left and right ends of the front of the burner assembly 1 to limit the front and rear movement of the burner assembly 1. In this embodiment, the air guide section 222 includes a side surface, a bottom surface, and a top surface. The bottom and top surfaces of the air guide section are formed by bending the upper and lower ends of the side surface of the air guide section integrally toward the burner assembly 1. Clearance positions 2224 are provided on the bottom and top surfaces of the air guide section, respectively. A second flange 2201 is fixed at the end of the bottom and top surfaces of the air guide section near the burner assembly 1. The end of the side surface of the air guide section near the air guide side plate 21 is bent toward the burner assembly to form the back surface of the air guide section. The end of the back surface of the air guide section near the burner assembly 1 is bent backward to form a convex edge 2221.

[0037] In other embodiments, a third air outlet may be added to the top and / or bottom of at least one air guide section 222 to enhance the cooling effect on the left / right sides of the burner assembly 1.

[0038] refer to Figure 5-6This embodiment also provides a gas water heater, which includes a water heater body and an air-cooled burner as described above. The water heater body includes a shell assembly 3 and a heat exchange assembly 4. The heat exchange assembly 4 is disposed inside the shell assembly 3, and the air-cooled burner is disposed inside the shell assembly 3 and located at the bottom of the heat exchange assembly 4. Thus, through the aforementioned air-cooled burner, cold air can be evenly distributed on the outer surface of the burner assembly, achieving further cooling. At the same time, the air can be preheated, optimizing combustion conditions.

[0039] Furthermore, the gas water heater also includes a sound insulation component 5, which is disposed inside the outer casing component 3 and connected to the first end of the air guide component 2. The sound insulation component 5 is provided with multiple noise reduction holes 52 and multiple ventilation openings 51 for cold air to pass through. The ventilation openings 51 are connected to the air inlet, so that the operating noise of the water heater can be reduced by the sound insulation component 5 without affecting the passage of cold air.

[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. An air-cooled burner, characterized in that, include: Burner assembly (1); as well as An air guide assembly (2) is fitted around the burner assembly (1). The air guide assembly (2) and the outer wall of the burner assembly (1) enclose each other to form an annular air duct. The air guide assembly (2) has a first end and a second end arranged opposite to each other. An air inlet and at least one first air outlet are provided on the first end, and at least one second air outlet are provided on the second end. The annular air duct is connected to the air inlet, the first air outlet and the second air outlet respectively.

2. The air-cooled burner according to claim 1, characterized in that, The first air outlet includes a plurality of first air outlet holes (211) arranged at intervals, and the second air outlet includes a plurality of second air outlet holes (2211) arranged at intervals, wherein the diameter of the second air outlet hole (2211) is larger than the diameter of the first air outlet hole (211).

3. An air-cooled burner according to claim 1 or 2, characterized in that, The air guide assembly (2) includes an air guide side plate (21) and a U-shaped air guide main plate (22). The air guide side plate (21) is connected to the outer wall of the burner assembly (1). An air inlet channel (210) is formed between the air guide side plate (21) and the outer wall of the burner assembly (1). The air guide side plate (21) is provided with the air inlet and at least one first air outlet. The main air guide plate (22) is fitted outside the burner assembly (1) and connected to the air guide side plate (21) and the burner assembly (1) respectively. A U-shaped channel (220) is formed between the main air guide plate (22) and the outer wall of the burner assembly (1). The U-shaped channel (220) is connected to the air inlet channel (210) to form the annular air duct. At least one second air outlet is provided at the end of the main air guide plate (22) away from the air guide side plate (21).

4. The air-cooled burner according to claim 3, characterized in that, The air inlet is disposed on the outer wall of the air guide side plate (21), and the first air outlet is provided at the top and bottom of the air guide side plate (21); the second air outlet is provided at the top and bottom of the end of the air guide main plate (22) away from the air guide side plate (21).

5. The air-cooled burner according to claim 3, characterized in that, The top and bottom of the air guide side plate (21) are respectively provided with a first flange (212) arranged close to the burner assembly (1), and the first flange (212) is connected to the outer wall of the burner assembly (1); the top and bottom of the air guide main plate (22) are respectively provided with at least one second flange (2201) arranged close to the burner assembly (1), and the second flange (2201) is connected to the outer wall of the burner assembly (1).

6. The air-cooled burner according to claim 3, characterized in that, Two protruding edges (2221) are provided on one end of the main air guide plate (22) near the air guide side plate (21). The air guide side plate (21) is sandwiched between the two protruding edges (2221) and is fixedly connected to the two protruding edges (2221) respectively.

7. The air-cooled burner according to claim 6, characterized in that, An upper mounting portion (2222) extending to the top of the air guide side plate (21) is fixedly provided at the upper end of the protruding edge (2221), and a lower mounting portion (2223) extending to the bottom of the air guide side plate (21) is fixedly provided at the lower end of the protruding edge (2221). The air guide side plate (21) is connected and fixed to the upper mounting portion (2222) and the lower mounting portion (2223) respectively.

8. The air-cooled burner according to claim 3, characterized in that, The main air guide plate (22) includes two air guide sections (222) and an air outlet section (221) fixedly connected in a U-shape. The top and bottom of the air outlet section (221) are respectively provided with the second air outlet, and the top and bottom of the two air guide sections (222) are respectively provided with clearance positions (2224).

9. A gas water heater, characterized in that, include: The water heater body includes an outer shell assembly (3) and a heat exchange assembly (4), wherein the heat exchange assembly (4) is disposed inside the outer shell assembly (3); as well as An air-cooled burner as described in any one of claims 1-8, wherein the air-cooled burner is disposed within the housing assembly (3) and located at the bottom of the heat exchange assembly (4).

10. A gas water heater according to claim 9, characterized in that, It also includes a sound insulation component (5), which is disposed inside the outer shell component (3) and connected to the first end of the air guide component (2). The sound insulation component (5) is provided with a vent (51) for cold air to pass through, and the vent (51) is connected to the air inlet.

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