A burner and a water heater

Abstract

The utility model discloses a kind of burner and water heater, wherein burner includes fire, wind deflector and gas supply pipe, fire includes ejection passage, the front and rear ends of ejection passage are respectively provided with gas outlet and air inlet;Wind deflector is located after fire, wind deflector is provided with the air hole corresponding with the position of air inlet, the diameter of air hole is not greater than the diameter of air inlet, the axis of air hole and the axis of air inlet are mutually parallel, and the axis of air hole is located above the axis of air inlet;Gas supply pipe is located after wind deflector, gas supply pipe is provided with the nozzle towards air hole.The utility model embodiment can improve combustion operating condition by optimizing the ejection angle of gas air inlet.

Description

Technical Field

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

[0002] Gas water heaters are widely used in homes and commercial establishments, and their combustion performance directly affects thermal efficiency, emission levels, and safety. With increasingly stringent environmental regulations, especially for exported products with stricter requirements for low-nitrogen emissions (such as NOx and CO), higher demands are being placed on burner structures. In existing technologies, the flue gas problems of low-NOx gas water heaters are primarily related to the combustion conditions, which in turn are influenced by various external and internal factors. The gas injection angle is one of the key factors. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a burner that can improve combustion conditions by optimizing the injection angle of the gas intake.

[0004] Secondly, this utility model also proposes a water heater that uses the above-mentioned burner.

[0005] According to a first aspect embodiment of the present invention, a burner includes a burner plate, a baffle plate, and a gas supply pipe. The burner plate includes an ejector channel, with an outlet and an inlet at its front and rear ends, respectively. The baffle plate is located behind the burner plate and has a vent hole corresponding to the position of the inlet. The diameter of the vent hole is not greater than the diameter of the inlet, and the axis of the vent hole is parallel to the axis of the inlet, with the axis of the vent hole located above the axis of the inlet. The gas supply pipe is located behind the baffle plate and has a nozzle facing the vent hole.

[0006] The burner according to the above embodiments of the present invention has at least the following beneficial effects:

[0007] The burner provided in this embodiment of the utility model sets the vent axis of the baffle plate above the air inlet axis of the flame ejector channel, forming a downward incident angle. This causes the gas intake air to flow upward, creating an arc-shaped flow path. This optimizes the mixing effect of gas and primary air, improves combustion efficiency, and promotes complete combustion. As a result, it effectively improves combustion conditions, reduces emissions of harmful gases such as CO and NOx, and enhances the safety and environmental performance of the gas water heater.

[0008] According to some embodiments of the present invention, the axis of the vent is located directly above the axis of the air inlet.

[0009] According to some embodiments of this utility model, the vertical distance between the axis of the vent hole and the axis of the air inlet is a, and satisfies: 3mm≤a≤8mm.

[0010] According to some embodiments of this utility model, the vertical distance between the axis of the vent hole and the axis of the air inlet is a, and satisfies: a=4.5mm.

[0011] According to some embodiments of the present invention, the axis of the nozzle is parallel to the axis of the air inlet.

[0012] According to some embodiments of the present invention, the nozzle and the air inlet are arranged coaxially.

[0013] According to some embodiments of the present invention, the firebox further includes a housing, a combustion plate, and an ignition needle. The housing is provided with the ejector channel, the combustion plate is connected to the gas outlet, and the combustion plate is provided with a combustion hole communicating with the gas outlet. The ignition needle is disposed adjacent to the combustion hole.

[0014] According to some embodiments of the present invention, the housing is provided with two ejector channels spaced vertically apart, the wind baffle is provided with two vent holes, and the air supply pipe is provided with two nozzles.

[0015] According to some embodiments of the present invention, the fire duct is provided with multiple fire ducts arranged side by side, the wind baffle is provided with multiple ventilation holes, and the air supply pipe is provided with multiple nozzles.

[0016] A water heater according to a second aspect of the present invention includes a burner as described in any one embodiment of the first aspect of the present invention.

[0017] The water heater according to the above embodiments of the present invention has at least the following beneficial effects:

[0018] The water heater provided in this embodiment of the utility model sets the vent axis of the baffle plate above the air inlet axis of the burner jet channel, forming a downward incident angle. This causes the gas intake air to flow upward, creating an arc-shaped flow path. This optimizes the mixing effect of gas and primary air, improves combustion efficiency, and promotes complete combustion. As a result, it effectively improves combustion conditions, reduces emissions of harmful gases such as CO and NOx, and enhances the safety and environmental performance of the gas water heater.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the burner structure according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the gas flow direction of the burner in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the burner from another direction according to an embodiment of the present invention;

[0024] In the attached figures, the following labels are used:

[0025] 100; 110; 111; 112; 120; 121; 121;

[0026] Windshield 200; Vent 201;

[0027] Air supply pipe 300; Nozzle 310;

[0028] Water cooling pipe 400. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Reference Figures 1 to 3 The burner according to the present invention includes a burner 100, a baffle plate 200, and a gas supply pipe 300. The burner 100 includes an ejector channel 110, with an outlet 111 and an inlet 112 at its front and rear ends, respectively. The baffle plate 200 is located behind the burner 100 and has a vent hole 201 corresponding to the position of the inlet 112. The diameter of the vent hole 201 is not greater than the diameter of the inlet 112. The axis of the vent hole 201 is parallel to the axis of the inlet 112 and is located above the axis of the inlet 112. The gas supply pipe 300 is located behind the baffle plate 200 and has a nozzle 310 facing the vent hole 201.

[0034] It is understood that the burner provided in this embodiment of the present invention sets the axis of the vent hole 201 of the baffle plate 200 above the axis of the air inlet 112 of the ejector channel 110 of the burner 100, forming a downward incident angle. This causes the gas intake air to flow upward, forming an arc-shaped flow path, thereby optimizing the mixing effect of gas and primary air, improving combustion efficiency, and promoting complete combustion. This effectively improves combustion conditions, reduces the emission of harmful gases such as CO and NOx, and enhances the safety and environmental performance of the gas water heater.

[0035] Preferably, according to some embodiments of the present invention, the axis of the vent 201 is located directly above the axis of the air inlet 112, thereby further optimizing the gas injection path, optimizing the mixing effect of gas and primary air, improving combustion efficiency, and helping to achieve complete combustion. This effectively improves combustion conditions, reduces emissions of harmful gases such as CO and NOx, and enhances the safety and environmental performance of the gas water heater.

[0036] Preferred, refer to Figure 1 According to some embodiments of this utility model, the vertical distance between the axis of the vent 201 and the axis of the air inlet 112 is 'a', satisfying the condition: 3mm ≤ a ≤ 8mm. It is understood that the inventors, through numerous experiments, have determined that this distance range can effectively control the upward angle of the gas flow while ensuring smooth gas introduction, allowing for more thorough mixing of gas and air. This avoids uneven mixing due to excessively small distances or turbulent airflow due to excessively large distances, thereby achieving more stable combustion conditions and lower CO and NOx emissions.

[0037] Preferred, refer to Figure 1 According to some embodiments of this utility model, the vertical distance between the axis of the vent 201 and the axis of the air inlet 112 is 'a', satisfying a = 4.5 mm. It is understood that, through repeated experiments and verifications by the inventors, this parameter can optimize the arc-shaped flow path of the gas to the greatest extent, improve the mixing state of the gas and air, significantly improve combustion efficiency, and effectively reduce harmful gas emissions, thus possessing good engineering application value.

[0038] It should be noted that in practical applications, the value of the spacing 'a' is not limited to 4.5mm, but can also be 3mm, 4mm, 5mm, etc., depending on different working conditions.

[0039] Preferably, according to some embodiments of the present invention, the axis of the nozzle 310 is parallel to the axis of the air inlet 112, which helps to maintain the consistency of the gas flow direction, avoid airflow disturbance caused by directional deviation, thereby improving the mixing stability of gas and air and further improving combustion performance.

[0040] Preferably, according to some embodiments of the present invention, the nozzle 310 and the air inlet 112 are arranged coaxially, and in this case, the nozzle 310 and the vent hole 201 partially overlap in the axial direction. It is understood that when the gas flows from the gas supply pipe 300 through the nozzle 310 into the vent hole 201, it forms an arc-shaped flow path that moves from bottom to top and is offset towards the center. Since the axis of the vent hole 201 is located above the axis of the air inlet 112, during the process of the gas flowing from the vent hole 201 into the air inlet 112, the gas naturally forms an arc-shaped flow path from top to bottom due to gravity. This optimizes the mixing effect of the gas and primary air, improves combustion efficiency, and promotes complete combustion. This effectively improves combustion conditions, reduces emissions of harmful gases such as CO and NOx, and enhances the safety and environmental performance of the gas water heater.

[0041] Furthermore, refer to Figure 1 According to some embodiments of the present invention, the burner 100 further includes a housing 120, a combustion plate (not shown in the figure) and an ignition needle (not shown in the figure). The housing 120 is provided with an ejector channel 110, the combustion plate is connected to the gas outlet 111, and the combustion plate is provided with a combustion hole communicating with the gas outlet 111. The ignition needle is located adjacent to the combustion hole.

[0042] It should be noted that in this embodiment of the invention, when the air around the air inlet 112 is drawn into the ejector channel 110 by the high-speed combustion gas, the baffle 200 can block the air, thereby reducing the air intake of the ejector channel 110 and lowering the proportion of air in the mixed combustion gas within the ejector channel 110. This relatively increases the concentration of combustion gas in the mixed combustion gas, making it easier to ignite the mixed combustion gas when the ignition needle ignites the mixed combustion gas entering the combustion hole from the air outlet 111. This ensures reliable ignition of the combustion gas and avoids phenomena such as burner failure to ignite or backfire and deflagration. The ignition needle can use electronic ignition or pulse continuous ignition, which can be determined according to actual needs and is not specifically limited here.

[0043] Preferred, refer to Figure 1 According to some embodiments of this utility model, the housing 120 is provided with two ejector channels 110 at vertical intervals, the baffle plate 200 is provided with two vent holes 201, and the gas supply pipe 300 is provided with two nozzles 310. It can be understood that when the burner 100 has multiple ejector channels 110, the multiple ejector channels 110 are independent of each other, which increases the amount of mixed fuel gas in the burner 100, which is beneficial to enhancing the combustion intensity.

[0044] Preferred, refer to Figure 3According to some embodiments of the present invention, the fire duct 100 is provided with multiple fire ducts arranged side by side, the wind baffle 200 is provided with multiple ventilation holes 201, and the air supply pipe 300 is provided with multiple nozzles 310.

[0045] Furthermore, refer to Figure 3 According to some embodiments of the present invention, the burner also includes a water-cooled pipe 400, which is distributed around multiple burners 100 to dissipate heat from the burners 100 and suppress the generation of nitrogen oxides. The water-cooled pipe 400 has an inlet and an outlet at both ends, and the inlet and outlet are located on the same side, which facilitates the installation of the water supply structure and the drainage structure.

[0046] Furthermore, refer to Figure 1 and Figure 3 According to some embodiments of the present invention, the outer shell is provided with two connection holes 121. The two connection holes 121 are symmetrically arranged on both sides of the ejector channel 110. When multiple burners 100 are arranged side by side, the water cooling pipes 400 are distributed in a U-shape and pass through multiple connection holes 121 in sequence. The water cooling pipes 400 directly contact the outer shell of the burner 100, thereby achieving a better heat dissipation effect.

[0047] A water heater according to an embodiment of the present utility model includes a burner of any of the above embodiments. Since the water heater adopts all the above technical solutions, it should have the same beneficial effects, and will not be described in detail here.

[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A burner, characterized in that, include: The firebox includes an ejector channel, with an air outlet and an air inlet at its front and rear ends, respectively. A baffle plate is provided after the fire bar. The baffle plate has a vent hole corresponding to the position of the air inlet. The diameter of the vent hole is not greater than the diameter of the air inlet. The axis of the vent hole is parallel to the axis of the air inlet, and the axis of the vent hole is located above the axis of the air inlet. An air supply pipe is located behind the wind deflector, and the air supply pipe is provided with a nozzle facing the air vent.

2. The burner according to claim 1, characterized in that, The axis of the vent is located directly above the axis of the air inlet.

3. The burner according to claim 2, characterized in that, The vertical distance between the axis of the vent and the axis of the air inlet is 'a', and satisfies: 3mm≤a≤8mm.

4. The burner according to claim 3, characterized in that, The vertical distance between the axis of the vent and the axis of the air inlet is 'a', and satisfies: a = 4.5 mm.

5. The burner according to claim 2, characterized in that, The axis of the nozzle is parallel to the axis of the air inlet.

6. The burner according to claim 5, characterized in that, The nozzle is arranged coaxially with the air inlet.

7. The burner according to claim 1, characterized in that, The firebox also includes a housing, a combustion plate, and an ignition needle. The housing is provided with the ejector channel, the combustion plate is connected to the gas outlet, and the combustion plate is provided with a combustion hole communicating with the gas outlet. The ignition needle is disposed adjacent to the combustion hole.

8. The burner according to claim 7, characterized in that, The housing is provided with two ejector channels at vertical intervals, the wind baffle is provided with two vent holes, and the air supply pipe is provided with two nozzles.

9. The burner according to claim 8, characterized in that, The fire rack has multiple fire bars arranged side by side, the wind baffle has multiple ventilation holes, and the air supply pipe has multiple nozzles.

10. A water heater, characterized in that, Includes the burner as described in any one of claims 1 to 9.

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