Cylindrical atmospheric burner and gas water heater

Abstract

The present invention relates to a cylindrical atmospheric burner and a gas water heater. The cylindrical atmospheric burner comprises a base, a first body, a first diverter tube, a second body and an ejector. A first mixing chamber and a second mixing chamber are provided on the base at intervals. The first body is mounted on the base, and the second body is stacked on the first body. Since the mixed gases respectively introduced into the first mixing chamber and the second mixing chamber will eventually flow out from different height positions, the user's needs for different load combustion are effectively met, and the segmented combustion of the burner is realized. The cylindrical atmospheric burner cleverly changes the flow direction of the mixed gas flow by means of a built-in first diverter tube, thereby realizing cylindrical stratified combustion and overcoming the problem of excessive temperature rise of the whole water heater under low load. The cylindrical atmospheric burner has multiple mixing chambers and diverter chambers built in to ensure that the gas and air are fully mixed before flowing out, so that the flame combustion is more stable, which is conducive to improving the user's experience of the whole water heater.

Description

Technical Field

[0001] The invention relates to the technical field of water heating equipment, in particular to a cylindrical atmospheric burner and a gas water heating equipment. Background Art

[0002] The burner device is a device that burns a mixture of gas and air. According to the different combustion forms, it can be divided into full premixed burners and atmospheric burners. Among them, full premixed burners are cylindrical, plate-shaped, fiber mesh-shaped, etc.

[0003] Traditional atmospheric burners are usually composed of several burner chips. Different load combustion requirements require different numbers of burner chips to be combined and stacked. The structure is relatively complex and is limited by design factors such as the use environment and cost, which reduces the combustion characteristics and user experience.

[0004] Currently, most cylindrical burners on the market are fully premixed combustion methods. Due to structural limitations, they are prone to uneven mixing of gas and air. It is not easy to design a segmented structure for the burner, which brings difficulties in dealing with the problem of excessive temperature rise of the water heater under low load. Summary of the invention

[0005] The first technical problem solved by the present invention is to provide a cylindrical atmospheric burner with cylindrical stratified combustion, which overcomes the problem of excessive temperature rise of the water heater under small load, and at the same time, is conducive to the balanced distribution of the gas mixture and improves the stability of flame combustion.

[0006] The second technical problem solved by the present invention is to provide a gas water heating device, which uses a cylindrical atmospheric burner and cylindrical stratified combustion to overcome the problem of excessive temperature rise of the water heater under small load. At the same time, it is beneficial to the balanced distribution of the gas mixture, improves the stability of flame combustion, and enhances the user experience of the water heater as a whole.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A cylindrical atmospheric burner, the cylindrical atmospheric burner comprising: a base, a first mixing chamber and a second mixing chamber for the mixed gas to pass therein are arranged at intervals on the base, and an air inlet is also arranged on the base; a first body and a first diverter tube, the first body is fixed to the base, a first diverter tube is provided with a first diverter chamber communicating with the first mixing chamber, the first diverter tube is sleeved in the first body, a second diverter chamber is formed between the first diverter tube and the first body, the second diverter chamber is communicated with the second mixing chamber, a first fire hole communicating with the second diverter chamber is arranged on the first body, and the air inlet is located at the periphery of the first body; a second body, the second body is stacked on the first body, a third diverter chamber communicating with the first diverter chamber is arranged in the second body, a second fire hole communicating with the third diverter chamber is arranged on the second body, and one end of the third diverter chamber facing away from the first body is closed; an ejector, the ejector is located on the side of the base facing away from the first body, and the first mixing chamber and the second mixing chamber are communicated with at least one ejector.

[0009] The cylindrical atmospheric burner of the present invention has the following beneficial effects compared with the background technology: during use, the gas and air mixture can be selectively or simultaneously introduced into the first mixing chamber and the second mixing chamber. When the mixed gas is introduced into the first mixing chamber for mixing, the mixed airflow will flow into the first diverter chamber, and under the action of the first diverter chamber, flow into the third diverter chamber; the airflow flowing into the third diverter chamber finally flows out from the second fire hole of the second body. When the mixed gas is introduced into the second mixing chamber for mixing, the mixed airflow will flow into the second diverter chamber, and under the action of the second diverter chamber, flow out from the first fire hole on the first body. Since the second body is stacked on the first body, the mixed gas introduced into the first mixing chamber and the second mixing chamber respectively will eventually flow out from different height positions, effectively meeting the user's needs for different load combustion, and realizing the segmented combustion of the burner. The cylindrical atmospheric burner cleverly changes the flow direction of the mixed airflow by the built-in first diverter, realizes cylindrical stratified combustion, and overcomes the problem of excessive temperature rise of the whole water heater under small load. The cylindrical atmospheric burner has multiple mixing chambers and diversion chambers built in to ensure that the gas and air are fully mixed before flowing out, making the flame combustion more stable and helping to improve the performance of the product.

[0010] In one embodiment, the inner diameter of the first diverter tube decreases first and then increases, or decreases first, remains unchanged, and then increases, from one end of the first diverter tube close to the base to one end of the first diverter tube close to the second body.

[0011] In one embodiment, the outer diameter of the first diverter tube first decreases and then increases, or first decreases, then remains unchanged, and then increases, from one end of the first diverter tube close to the base to one end of the first diverter tube close to the second body, and the side surface of the first body facing the second diverter cavity is a cylindrical surface.

[0012] In one embodiment, the cylindrical atmospheric burner also includes a top cover, which closes the end of the third diversion chamber facing away from the first body, and the top cover includes a mounting portion and a protrusion, the protrusion is arranged on the mounting portion, the mounting portion is installed on the second body, the protrusion extends into the third diversion chamber, and the protrusion is used to guide the airflow in the third diversion chamber to the surroundings.

[0013] In one embodiment, the cross section of the protrusion is obtained by cutting the protrusion with a plane perpendicular to the axis of the protrusion, and the area of ​​the cross section tends to increase from the end of the protrusion away from the mounting portion to the end of the protrusion close to the mounting portion.

[0014] In one embodiment, the cylindrical atmospheric burner also includes a second diverter tube, which is sleeved in the second body and divides the third diverter chamber into a first diverter chamber and a second diverter chamber. The diverter tube is provided with a diverter hole, and the first diverter chamber is connected to the second diverter chamber through the diverter hole, the first diverter chamber is connected to the first diverter chamber, and the second fire hole is connected to the second diverter chamber.

[0015] In one embodiment, the second mixing chamber is disposed around the periphery of the first mixing chamber.

[0016] In one embodiment, a sealing gasket is provided between the first body and the base, and a first flow hole and a second flow hole are provided on the sealing gasket. At least two of the second flow holes are arranged at intervals around the periphery of the first flow hole. The first mixing chamber is connected to the first diversion chamber through the first flow hole, and the second mixing chamber is connected to the second diversion chamber through the second flow hole.

[0017] In one embodiment, the first diversion cylinder includes a cylinder body and a first end plate arranged at one end of the cylinder body, the cylinder body is sleeved in the first body, the first end plate is supported on the end of the first body, the second body is installed on the first end plate, the first diversion chamber is provided in the cylinder body, and the second diversion chamber is formed between the cylinder body and the first body.

[0018] In one embodiment, the sum of the hole areas of all the second fire holes on the second body is greater than the sum of the hole areas of all the first fire holes on the first body.

[0019] In one of the embodiments, the tubular atmospheric burner further comprises an ignition assembly, and the ignition assembly is mounted on the base.

[0020] The above second technical problem is solved by the following technical solution:

[0021] A gas water heater comprises any one of the above described cylindrical atmospheric burners.

[0022] The gas water heater of the present invention has the following beneficial effects compared with the background technology: by using the above cylindrical atmospheric burner, during use, the gas and air mixed gas can be selectively or simultaneously introduced into the first mixing chamber and the second mixing chamber. When the mixed gas is introduced into the first mixing chamber for mixing, the mixed gas flow will flow into the first diverter chamber, and under the action of the first diverter chamber, flow into the third diverter chamber; the gas flow flowing into the third diverter chamber finally flows out from the second fire hole of the second body. When the mixed gas is introduced into the second mixing chamber for mixing, the mixed gas flow will flow into the second diverter chamber, and under the action of the second diverter chamber, flow out from the first fire hole on the first body. Since the second body is stacked on the first body, the mixed gas introduced into the first mixing chamber and the second mixing chamber respectively will eventually flow out from different height positions, effectively meeting the user's needs for different load combustion, and realizing the staged combustion of the burner. The cylindrical atmospheric burner cleverly changes the flow direction of the mixed gas flow by the built-in first diverter, realizes cylindrical stratified combustion, and overcomes the problem of excessive temperature rise of the whole water heater under small load. The cylindrical atmospheric burner has multiple mixing chambers and diversion chambers built in to ensure that the gas and air are fully mixed before flowing out, making the flame combustion more stable and helping to improve the performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the structure of a cylindrical atmospheric burner according to an embodiment;

[0026] Figure 2It is a schematic diagram of an explosion of a cylindrical atmospheric burner structure described in one embodiment;

[0027] Figure 3 A cross-sectional view of a cylindrical atmospheric burner structure according to an embodiment;

[0028] Figure 4 A schematic diagram of airflow in a tubular atmospheric burner according to an embodiment;

[0029] Figure 5 It is a schematic diagram of the base structure described in an embodiment.

[0030] Reference numerals:

[0031] 100, burner; 110, base; 111, first mixing chamber; 112, second mixing chamber; 113, air inlet; 120, first body; 121, first fire hole; 122, flange; 123, expansion; 130, first flow divider; 131, body; 132, first end plate; 133, second end plate; 134, throat; 135, first flow divider; 136, second flow divider; 140, second body; 1 41. second fire hole; 142. edging; 150. top cover; 151. mounting portion; 152. raised portion; 153. rounded portion; 154. abutting step surface; 160. second diverter tube; 161. diverter hole; 162. third diverter cavity; 1621. first split cavity; 1622. second split cavity; 170. ignition assembly; 180. ejector; 190. sealing gasket; 191. first flow hole; 192. second flow hole. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] In one embodiment, please refer to Figures 1 to 3A cylindrical atmospheric burner 100 includes: a base 110, a first body 120, a first diverter tube 130, a second body 140 and an ejector 180. The base 110 is provided with a first mixing chamber 111 and a second mixing chamber 112 for the mixed gas to pass through. The base 110 is also provided with an air inlet 113. The first body 120 is fixed to the base 110. A first diverter tube 135 communicating with the first mixing chamber 111 is provided in the first diverter tube 130, and the first diverter tube 130 is sleeved in the first body 120, and a second diverter tube 136 is formed between the first diverter tube 130 and the first body 120. The second diverter tube 136 is communicated with the second mixing chamber 112. The first body 120 is provided with a first fire hole 121 communicating with the second diverter tube 136. The air inlet 113 is located at the periphery of the first body 120. The second body 140 is stacked on the first body 120, and a third diverter cavity 162 communicating with the first diverter cavity 135 is provided in the second body 140, and a second fire hole 141 communicating with the third diverter cavity 162 is provided on the second body 140. One end of the third diverter cavity 162 facing away from the first body 120 is closed. The ejector 180 is located on the side of the base 110 facing away from the first body 120. The first mixing cavity 111 and the second mixing cavity 112 are communicated with at least one ejector 180.

[0034] In the process of using the above-mentioned cylindrical atmospheric burner 100, the gas and air mixture can be selectively or simultaneously introduced into the first mixing chamber 111 and the second mixing chamber 112. When the mixed gas is introduced into the first mixing chamber 111 for mixing, the mixed gas flow will flow into the first diverter chamber 135, and under the action of the first diverter chamber 135, flow into the third diverter chamber 162; the gas flow into the third diverter chamber 162 eventually flows out from the second fire hole 141 of the second body 140. When the mixed gas is introduced into the second mixing chamber 112 for mixing, the mixed gas flow will flow into the second diverter chamber 136, and under the action of the second diverter chamber 136, flow out from the first fire hole 121 on the first body 120. Since the second body 140 is stacked on the first body 120, the mixed gas introduced into the first mixing chamber 111 and the second mixing chamber 112 will eventually flow out from different heights, effectively meeting the user's needs for combustion under different loads and realizing segmented combustion of the burner 100. The cylindrical atmospheric burner 100 cleverly changes the flow direction of the mixed gas flow by means of the built-in first diverter tube 130, realizes cylindrical stratified combustion, and overcomes the problem of excessive temperature rise of the whole water heater under low load. The cylindrical atmospheric burner 100 has multiple mixing chambers and diverter chambers built in to ensure that the gas and air are fully mixed before flowing out, making the flame combustion more stable, which is conducive to improving the performance of the product.

[0035] It should be noted that the present embodiment is not limited to two-stage combustion, and can also be designed as a three-stage, four-stage, or even more-stage combustion mode, but as long as it involves the first body 120, the second body 140 and the first split tube 130 structure and the structural relationship between the three, they all fall within the scope of protection of the present application. In addition, when the tubular atmospheric burner 100 needs more than three-stage combustion, it is only necessary to add corresponding structures on the basis of the original structure, such as: adding at least one additional mixing chamber on the base 110, at least one body is stacked on the second body 140, and at least one split tube is sleeved in the first split tube 130. In addition, the first split chamber 135, the second split chamber 136 and the third split chamber 162 are all straight-through chambers, that is, both ends are open and open. Of course, in other embodiments, holes can also be opened at both ends of the first split chamber 135, the second split chamber 136 and the third split chamber 162 to achieve gas path communication. At the same time, the first body 120 and the second body 140 are both tubular structures.

[0036] It should be noted that when the first mixing chamber 111 and the second mixing chamber 112 are both connected to the same ejector 180, a control valve, such as a three-way valve, may be provided on the ejector 180 to realize the selective air supply function of the ejector 180; when the first mixing chamber 111 and the second mixing chamber 112 are respectively connected to two ejectors 180, a proportional valve or other valve structure may be provided on the ejector 180 to adjust the flow rate.

[0037] It should also be noted that the present embodiment does not specifically limit the shape of the first diverter cavity 135, and it is only necessary that the mixed airflow in the first diverter cavity 135 can stably flow into the third diverter cavity 162. For example, the first diverter cavity 135 is cylindrical, inverted trapezoidal, truncated cone, Venturi, etc.

[0038] Optionally, the first fire hole 121 can be a circular hole, a strip hole, an elliptical hole, a triangular hole or other polygonal hole; of course, the first fire hole 121 can also be a combination of holes of various shapes. Similarly, the second fire hole 141 can be a circular hole, a strip hole, an elliptical hole, a triangular hole or other polygonal hole; of course, the second fire hole 141 can also be a combination of holes of various shapes. In addition, there are many ways to arrange the first fire holes 121 on the first body 120, as long as the airflow is satisfied.

[0039] Specifically, the number of first fire holes 121 on the end of the first body 120 close to the second body 140 is less than the number of first fire holes 121 on the end of the first body 120 close to the base 110. In addition, both the first body 120 and the second body 140 are cylindrical structures.

[0040] For further information, please refer to Figure 3, the inner diameter of the first diverter tube 130 is first reduced and then increased, or first reduced, then unchanged, and then increased, from the end of the first diverter tube 130 close to the base 110 to the end of the first diverter tube 130 close to the second body 140. It can be seen from this that the first diverter chamber 135 of this embodiment is or is approximately Venturi-shaped, that is, there is a throat 134 with a smaller cross-section between the two opposite chamber openings of the first diverter chamber 135. When the mixed gas flows into the first diverter chamber 135, the airflow velocity first increases and then decreases, or first increases, then remains unchanged, and then decreases, reaching the maximum in the throat 134 area, so that a pressure difference and a flow velocity difference are generated on both sides of the throat 134, ensuring that the airflow velocity changes sharply in the first diverter chamber 135, so that the airflow flows out of the first diverter chamber 135 and enters the third diverter chamber 162 in a way of diffusing to the surroundings, which is conducive to the uniform distribution of the airflow in the third diverter chamber 162, ensuring that the flame burns more stably.

[0041] Please also refer to Figure 3 In this embodiment, the inner diameter of the first flow dividing cylinder 130 should be understood as follows: the cross section of the side of the first flow dividing cylinder 130 facing the first flow dividing cavity 135 is circular, and the diameter of the circle is the inner diameter of the first flow dividing cylinder 130. Figure 3 For example, the inner diameter of the first flow dividing cylinder 130 is Figure 3 Where S0 represents the size.

[0042] In one embodiment, please refer to Figure 3 , the outer diameter of the first diverter tube 130 is first reduced and then increased, or first reduced, then unchanged, and then increased, from the end of the first diverter tube 130 close to the base 110 to the end of the first diverter tube 130 close to the second body 140, and the side of the first body 140 facing the second diverter cavity 136 is a cylindrical surface. It can be seen that the outer side of the first diverter tube 130 is also Venturi-shaped. Therefore, the first diverter tube 130 makes the second diverter cavity 136 increase and then decrease, so that the internal airflow produces different pressure differences and flow rate differences, which is conducive to the diffusion and mixing of the airflow in the second diverter cavity 136, and ensures that the flame burns more stably.

[0043] It should be noted that the outer diameter of the first flow dividing cylinder 130 in this embodiment should be understood as follows: the cross section of the side of the first flow dividing cylinder 130 facing the second flow dividing cavity 136 is circular, and the diameter of the circle is the outer diameter of the first flow dividing cylinder 130. Figure 3 For example, the outer diameter of the first flow dividing cylinder 130 is Figure 3 S4 represents the size.

[0044] Furthermore, with the throat 134 of the first diverter tube 130 as a reference, the distribution density of the first fire holes 121 in the first body 120 decreases along the direction from the throat 134 of the first diverter tube 130 to the end of the first diverter tube 130 close to the second body 140; at the same time, the distribution density of the first fire holes 121 in the first body 120 decreases along the direction from the throat 134 of the first diverter tube 130 to the end of the first diverter tube 130 close to the base 110, thereby ensuring that the mixed gas on the first body 120 flows out more evenly. In addition, with the throat 134 of the first diverter tube 130 as a reference, the number of the first fire holes 121 located on the upper side of the throat 134 of the first diverter tube 130 is generally less than the number of the first fire holes 121 located on the lower side of the throat 134 of the first diverter tube 130.

[0045] In one embodiment, please refer to Figure 3 The cylindrical atmospheric burner 100 further includes a top cover 150. The top cover 150 closes one end of the third flow distribution chamber 162 facing away from the first body 120, and the top cover 150 includes a mounting portion 151 and a protrusion 152. The protrusion 152 is arranged on the mounting portion 151. The mounting portion 151 is mounted on the second body 140. The protrusion 152 extends into the third flow distribution chamber 162, and the protrusion 152 is used to guide the airflow in the third flow distribution chamber 162 to the surroundings. It can be seen that when the mounting portion 151 is installed on the second body 140, the protrusion 152 extends into the third diverter chamber 162, which not only realizes the closure of one end of the third diverter chamber 162, but also guides the airflow in the third diverter chamber 162, so that the airflow entering the third diverter chamber 162 is diffused to the surroundings under the action of the protrusion 152, and the airflow is guided to be evenly distributed in the third diverter chamber 162, preventing the mixed gas from gathering inside and causing excessive gas pressure, thereby effectively avoiding uneven flames or the deterioration of the burner 100 burning black.

[0046] It should be noted that this embodiment does not specifically limit the shape of the protrusion 152. It only requires that the side of the protrusion 152 has a certain slope or curvature. For example, the protrusion 152 is designed to be an inverted triangular pyramid, an inverted cone, an inverted truncated cone, an inverted trapezoid, an inverted hemisphere, etc.

[0047] For further information, please refer to Figure 3, the cross section of the protrusion 152 is obtained by cutting the plane perpendicular to the axis of the protrusion 152, and the area of ​​the cross section increases from the end of the protrusion 152 away from the mounting portion 151 to the end of the protrusion 152 close to the mounting portion 151, that is, from the direction of airflow, the protrusion 152 of this embodiment is a structure that gradually increases, or first increases, then remains unchanged, and then continues to increase. When the protrusion 152 extends into the third diversion cavity 162, the space between the protrusion 152 and the cavity wall of the third diversion cavity 162 gradually decreases or first decreases, then remains unchanged, and then continues to decrease along the direction of airflow. In this way, the airflow entering the third diversion cavity 162 is more easily diffused to the surroundings of the third diversion cavity 162 under the guidance of the protrusion 152, ensuring that the airflow flowing out of the second fire hole 141 is evenly distributed.

[0048] It should be noted that, in order to facilitate understanding of the axis and cross section of the protrusion 152 in this embodiment, Figure 3 For example, the axis of the protrusion 152 is Figure 3 The straight line represented by S1; the cross section is Figure 3 The area indicated by S2.

[0049] For further information, please refer to Figure 3 The cross-sectional area increases gradually from the end of the protrusion 152 away from the mounting portion 151 to the end of the protrusion 152 close to the mounting portion 151. At the same time, a rounded portion 153 is provided at the end of the protrusion 152 away from the mounting portion 151, so that when the airflow hits the protrusion 152, the rounded portion 153 reduces the impact force of the airflow on the protrusion 152, so that the airflow flows along the rounded portion 153 to the surrounding of the third diversion cavity 162.

[0050] Specifically, the smooth portion 153 is an arc surface. Meanwhile, the mounting portion 151 and the raised portion 152 are an integrated structure.

[0051] In one embodiment, please refer to Figure 4, the tubular atmospheric burner 100 also includes a second diverter tube 160. The second diverter tube 160 is sleeved in the second body 140, and divides the third diverter chamber 162 into a first diverter chamber 1621 and a second diverter chamber 1622. A diverter hole 161 is provided on the diverter tube. The first diverter chamber 1621 is connected to the second diverter chamber 1622 through the diverter hole 161, and the first diverter chamber 135 is connected to the first diverter chamber 1621. The second fire hole 141 is connected to the second diverter chamber 1622. It can be seen that when the airflow flows out of the first mixing chamber 111, the airflow first enters the first diverter chamber 1621; then flows into the second diverter chamber 1622 through the diverter hole 161; finally, it flows out through the second fire hole 141 for combustion. In this embodiment, a second split tube 160 is added in the second body 140 so that the mixed gas flows evenly into the second split cavity 1622 , thereby ensuring that the flame on the second body 140 burns stably.

[0052] For further information, please refer to Figure 4 The mounting portion 151 is mounted on the second body 140, and the protrusion 152 extends into the first sub-body cavity 1621. When the airflow flows into the first sub-body cavity 1621, the airflow is diffused to the surroundings under the guidance of the protrusion 152; the diffused airflow flows evenly from the diverter hole 161 into the second sub-body cavity 1622, so that the mixed gas is fully mixed and the mixed airflow is evenly distributed on the inner wall of the second body 140, so that the flame on the second body 140 is more stable.

[0053] In one embodiment, please refer to Figure 4 , one end of the second shunt cylinder 160 is lower than one end of the second body 140. A contact step 154 ​​is provided on the top cover 150, and the outer side surface of the top cover 150 is interference fit on the inner side of the second body 140. The contact step 154 ​​contacts one end of the second shunt cylinder 160, and the other end of the second shunt cylinder 160 contacts the second end plate 132, so that the top cover 150 is stably installed on the second body 140. At the same time, one end of the second split cavity 1622 is closed by the contact step 154. In order to improve the sealing performance between the second body 140 and the top cover 150, solder can be filled between the second body 140 and the top cover 150, and the airtightness between the second body 140 and the top cover 150 is improved by fusion welding.

[0054] Specifically, please refer to Figure 4 The abutment step surface 154 is disposed on the mounting portion 151 and is disposed around the periphery of the protrusion 152 .

[0055] In one embodiment, please refer to Figure 5 The second mixing chamber 112 is arranged around the periphery of the first mixing chamber 111 , that is, the second mixing chamber 112 is an annular chamber, which ensures that the airflow flowing out of the second mixing chamber 112 is evenly dispersed into the second diversion chamber 136 .

[0056] It should be noted that when the tubular atmospheric burner 100 has more than three stages of combustion, at least one additional mixing chamber needs to be provided on the base 110. At this time, the mixing chambers on the base 110 are annular in structure, and the mixing chambers are arranged in a ring-shaped manner.

[0057] For further information, please refer to Figure 2 A sealing gasket 190 is provided between the first body 120 and the base 110 to improve the airtightness between the first body 120 and the base 110 and prevent gas leakage therebetween. At the same time, a first flow hole 191 and a second flow hole 192 are provided on the sealing gasket 190. At least two second flow holes 192 are arranged at intervals around the periphery of the first flow hole 191. The first mixing chamber 111 is connected to the first diverter chamber 135 through the first flow hole 191, and the second mixing chamber 112 is connected to the second diverter chamber 136 through the second flow hole 192. In this way, through the first flow hole 191 and the second flow hole 192, the airflows in the first mixing chamber 111 and the second mixing chamber 112 stably flow into the corresponding diverter chambers, ensuring smooth flow of the mixed gas. At the same time, at least two second flow holes 192 are arranged around the first flow hole 191, which has a flow balancing effect on the airflow in the second mixing chamber 112, so that the airflow in the second mixing chamber 112 flows evenly and stably into the second diversion chamber 136, further ensuring the stable combustion of the flame on the first body 120.

[0058] In one embodiment, please refer to Figure 2 The first flow dividing cylinder 130 includes a cylinder body 131 and a first end plate 132 arranged at one end of the cylinder body 131. The cylinder body 131 is sleeved in the first body 120. The first end plate 132 is supported at the end of the first body 120. The second body 140 is mounted on the first end plate 132. A first flow dividing chamber 135 is provided in the cylinder body 131, and a second flow dividing chamber 136 is formed between the cylinder body 131 and the first body 120, so as to ensure that the first flow dividing cylinder 130 is stably sleeved in the first body 120.

[0059] For further information, please refer to Figure 2 The end of the first body 120 is provided with a flange 122, and the first end plate 132 is supported on the flange 122. The second body 140 is provided with a rim 142. The rim 142 wraps the first end plate 132 and the flange 122, so that the first body 120, the first diverter cylinder 130 and the second body 140 are stably connected.

[0060] In one embodiment, please refer to Figure 2 An expanded edge 123 is provided on one end of the first body 120 close to the base 110 , and the expanded edge 123 abuts against the sealing gasket 190 .

[0061] In one embodiment, please refer to Figure 2 The first diversion cylinder 130 further includes a second end plate 133 disposed on the other end of the cylinder body 131 , and the second end plate 133 abuts against the sealing gasket 190 .

[0062] In one embodiment, please refer to Figure 5 There are more than two air inlets 113. The more than two air inlets 113 are arranged at intervals around the periphery of the first body 120.

[0063] In one embodiment, please refer to Figure 3 The length direction of the ejector 180 intersects with the depth direction of the first mixing chamber 111 and the depth direction of the second mixing chamber 112, respectively, to prevent the airflow of the ejector 180 from directly flowing out of the first mixing chamber 111 and the second mixing chamber 112. At the same time, it is also helpful to slow down the airflow velocity, so that the mixed gas is fully mixed in the first mixing chamber 111 and the second mixing chamber 112.

[0064] In one embodiment, the sum of the hole areas of all the second fire holes 141 on the second body 140 is greater than the sum of the hole areas of all the first fire holes 121 on the first body 120. In this way, the gas flow rate flowing out of the second body 140 is greater than the gas flow rate flowing out of the first body 120, thereby meeting the requirements of different load combustion of products.

[0065] In one embodiment, please refer to Figure 1 The tubular atmospheric burner 100 further includes an ignition assembly 170. The ignition assembly 170 is mounted on the base 110. When the mixed gas flows out from the first fire hole 121 and the second fire hole 141 respectively, the ignition assembly 170 is started so that the gas is quickly ignited.

[0066] In one embodiment, please refer to Figures 1 to 3 , a gas water heater, comprising the cylindrical atmospheric burner 100 in any one of the above embodiments.

[0067] The above-mentioned gas water heater adopts the above-mentioned cylindrical atmospheric burner 100. During use, the gas and air mixed gas can be selectively or simultaneously introduced into the first mixing chamber 111 and the second mixing chamber 112. When the mixed gas is introduced into the first mixing chamber 111 for mixing, the mixed gas flow will flow into the first diverter chamber 135, and under the action of the first diverter chamber 135, flow into the third diverter chamber 162; the gas flow flowing into the third diverter chamber 162 eventually flows out from the second fire hole 141 of the second body 140. When the mixed gas is introduced into the second mixing chamber 112 for mixing, the mixed gas flow will flow into the second diverter chamber 136, and under the action of the second diverter chamber 136, flow out from the first fire hole 121 on the first body 120. Since the second body 140 is stacked on the first body 120, the mixed gas introduced into the first mixing chamber 111 and the second mixing chamber 112 will eventually flow out from different heights, effectively meeting the user's needs for combustion under different loads and realizing segmented combustion of the burner 100. The cylindrical atmospheric burner 100 cleverly changes the flow direction of the mixed gas flow by means of the built-in first diverter tube 130, realizes cylindrical stratified combustion, and overcomes the problem of excessive temperature rise of the whole water heater under low load. The cylindrical atmospheric burner 100 has multiple mixing chambers and diverter chambers built in to ensure that the gas and air are fully mixed before flowing out, making the flame combustion more stable, which is conducive to improving the performance of the product.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A cylindrical atmospheric burner, characterized in that: The cylindrical atmospheric burner (100) comprises: A base (110), wherein a first mixing chamber (111) and a second mixing chamber (112) for allowing mixed gas to pass therein are provided at intervals on the base (110), and an air inlet (113) is also provided on the base (110); A first body (120) and a first flow diversion tube (130), wherein the first body (120) is fixed to the base (110), a first flow diversion chamber (135) communicating with the first mixing chamber (111) is provided in the first flow diversion tube (130), the first flow diversion tube (130) is sleeved in the first body (120), a second flow diversion chamber (136) is formed between the first flow diversion tube (130) and the first body (120), the second flow diversion chamber (136) is communicated with the second mixing chamber (112), a first fire hole (121) communicating with the second flow diversion chamber (136) is provided on the first body (120), and the air inlet (113) is located at the periphery of the first body (120); a second body (140), the second body (140) being stacked on the first body (120), a third flow diversion chamber (162) being in communication with the first flow diversion chamber (135) being provided in the second body (140), a second fire hole (141) being in communication with the third flow diversion chamber (162) being provided on the second body (140), and the third flow diversion chamber (162) being closed at one end facing away from the first body (120); an ejector (180), the ejector (180) being located on a side of the base (110) facing away from the first body (120), the first mixing chamber (111) and the second mixing chamber (112) being in communication with at least one of the ejectors (180); The inner diameter of the first flow dividing tube (130) is first reduced and then increased, or first reduced, then unchanged, and then increased, from one end of the first flow dividing tube (130) close to the base (110) to one end of the first flow dividing tube (130) close to the second body (140); The tubular atmospheric burner (100) further comprises a second diverter tube (160), which is sleeved in the second body (140) and divides the third diverter chamber (162) into a first diverter chamber (1621) and a second diverter chamber (1622). The diverter tube is provided with a diverter hole (161), the first diverter chamber (1621) is connected to the second diverter chamber (1622) through the diverter hole (161), the first diverter chamber (135) is connected to the first diverter chamber (1621), and the second fire hole (141) is connected to the second diverter chamber (1622).

2. The cylindrical atmospheric burner according to claim 1, characterized in that: The outer diameter of the first diverter tube (130) decreases first and then increases, or decreases first, remains unchanged, and then increases, from one end of the first diverter tube (130) close to the base (110) to one end of the first diverter tube (130) close to the second body (140), and a side surface of the first body (120) facing the second diverter cavity (136) is a cylindrical surface.

3. The cylindrical atmospheric burner according to claim 1, characterized in that: The cylindrical atmospheric burner (100) also includes a top cover (150), wherein the top cover (150) closes one end of the third diversion chamber (162) facing away from the first body (120), and the top cover (150) includes a mounting portion (151) and a protrusion (152), wherein the protrusion (152) is arranged on the mounting portion (151), and the mounting portion (151) is installed on the second body (140), and the protrusion (152) extends into the third diversion chamber (162), and the protrusion (152) is used to guide the airflow in the third diversion chamber (162) to the surroundings.

4. The cylindrical atmospheric burner according to claim 3, characterized in that: A cross section of the protruding portion (152) obtained by cutting the protruding portion (152) with a plane perpendicular to the axis of the protruding portion (152) has an area that tends to increase from an end of the protruding portion (152) away from the mounting portion (151) to an end of the protruding portion (152) close to the mounting portion (151).

5. The cylindrical atmospheric burner according to claim 1, characterized in that: The second mixing chamber (112) is arranged around the periphery of the first mixing chamber (111).

6. The cylindrical atmospheric burner according to claim 5, characterized in that: A sealing gasket (190) is provided between the first body (120) and the base (110); a first flow hole (191) and a second flow hole (192) are provided on the sealing gasket (190); at least two of the second flow holes (192) are arranged at intervals around the periphery of the first flow hole (191); the first mixing chamber (111) is connected to the first diverter chamber (135) through the first flow hole (191); and the second mixing chamber (112) is connected to the second diverter chamber (136) through the second flow hole (192).

7. The cylindrical atmospheric burner according to any one of claims 1 to 6, characterized in that: The first diversion cylinder (130) includes a cylinder body (131) and a first end plate (132) arranged at one end of the cylinder body (131); the cylinder body (131) is sleeved in the first body (120); the first end plate (132) is supported on the end of the first body (120); the second body (140) is mounted on the first end plate (132); the first diversion chamber (135) is provided in the cylinder body (131); and the second diversion chamber (136) is formed between the cylinder body (131) and the first body (120).

8. The cylindrical atmospheric burner according to any one of claims 1 to 6, characterized in that: The sum of the hole areas of all the second fire holes (141) on the second body (140) is greater than the sum of the hole areas of all the first fire holes (121) on the first body (120).

9. The cylindrical atmospheric burner according to any one of claims 1 to 6, characterized in that: The tubular atmospheric burner (100) further comprises an ignition assembly (170), wherein the ignition assembly (170) is mounted on the base (110).

10. A gas water heater, characterized in that: It comprises the cylindrical atmospheric burner (100) as described in any one of claims 1 to 9.

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