CN216521644U - Sectional type burner and gas heater - Google Patents

Abstract

The utility model relates to a sectional type combustion device and a gas water heater. When the mixed gas is introduced into the second gas inlet channel, the mixed gas flows into the second mixing cavity; then flows into the first mixing cavity from the first air outlet on the gas distributing body; and finally flows out of the first fire hole on the first main body. So for the mist flows from different high positions, effectively satisfies the demand that the different load of user burnt, realizes burner's sectional combustion. This sectional type burner utilizes first reposition of redundant personnel to form the second hybrid chamber in minute gas at the in-process that admits air, effectively prolongs mist's circulation route for gas and air intensive mixing improve the mixing degree of consistency of gas, are favorable to promoting the sectional combustion characteristic.

Description

Sectional type burner and gas heater

Technical Field

The utility model relates to the technical field of gas combustion, in particular to a sectional type combustion device and a gas water heater.

Background

The burner is a device for burning gas and air mixture. The combustion mode can be divided into a fully premixed combustion device and an atmospheric combustion device.

In order to increase the thermal load regulation ratio, the existing atmospheric burner is designed into a two-layer burner body structure which is communicated up and down. In the air intake process, the gas is divided into two air flows by the air intake structure, and the two air flows flow into the upper and lower layers of burner bodies respectively and independently so as to realize combustion with different loads. However, the combustor still has room for improvement in combustion characteristics and overall volume design due to the limitation of the intake structure design.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the utility model is to provide a sectional type combustion device, which can effectively improve the mixing uniformity of gas and air and improve the sectional combustion characteristic; meanwhile, the whole machine is convenient to miniaturize.

The second technical problem to be solved by the utility model is to provide a gas water heater, which can effectively improve the mixing uniformity of gas and air and improve the sectional combustion characteristic; meanwhile, the miniaturization of the whole machine is facilitated.

The first technical problem is solved by the following technical scheme:

a staged combustion device, the staged combustion device comprising: the first body is provided with a first fire hole; the gas distributing body is embedded in the first main body, a first mixing cavity is formed between the gas distributing body and the first main body, and a first gas inlet channel and a second gas inlet channel are arranged on the gas distributing body at intervals; the first flow dividing piece is embedded in the gas dividing body, a second mixing cavity communicated with the second gas inlet channel is formed between the first flow dividing piece and the gas dividing body, first gas outlet holes respectively communicated with the first mixing cavity and the second mixing cavity are formed in the gas dividing body, and a flow dividing cavity communicated with the first gas inlet channel is formed in the first flow dividing piece; the second main part, the second main part is folded and is located on the first main part, be equipped with in the second main part with the third hybrid chamber of reposition of redundant personnel chamber intercommunication, the third hybrid chamber is kept away from the one end of first main part is in the closed condition, be equipped with the second fire hole in the second main part.

Compared with the background art, the sectional type combustion device has the following beneficial effects: during use, the mixed gas of the fuel gas and the air can be alternatively or simultaneously introduced into the first air inlet channel and the second air inlet channel. When the mixed gas is introduced into the first gas inlet channel, the mixed gas flows into the flow dividing cavity and flows into the third mixing cavity under the action of the flow dividing cavity; the air flow flowing into the third mixing chamber finally flows out of the second fire hole of the second body. When the mixed gas is introduced into the second gas inlet channel, the mixed gas flows into the second mixing cavity; then flows into the first mixing cavity from the first air outlet on the gas distributing body; and finally flows out of the first fire hole on the first main body. So for mist flows from different high positions, effectively satisfies the demand that the different load of user burnt, realizes burner's sectional combustion. This sectional type burner utilizes first reposition of redundant personnel to form the second hybrid chamber in minute gas at the in-process that admits air for the mist that gets into by second inlet channel does not directly get into first hybrid chamber in, but in returning to the entering minute gas, flows into first hybrid chamber by the first venthole on the minute gas again. So effectively prolong mist's circulation route for gas and air intensive mixing improve the mixture degree of consistency of gas, are favorable to promoting the segmentation burning characteristic.

In one embodiment, the number of the second intake passages is two or more, and the two or more second intake passages are arranged at intervals along the periphery of the first intake passage.

In one embodiment, the first air outlet is provided in plurality, and the first air outlet is provided between any two adjacent second air inlet channels.

In one embodiment, the cross-sectional area S of the distribution chamber₁The flow dividing cavity is gradually increased from one end, close to the first air inlet channel, of the flow dividing cavity to one end, close to the second main body, of the flow dividing cavity.

In one embodiment, the first flow divider faces away from the outer side cross-sectional area S of the flow dividing cavity₂And gradually increases from an end of the first flow dividing member near the first intake passage to an end of the first flow dividing member near the second body.

In one embodiment, an installation surface is arranged in the gas distributing body, the installation surface extends along the periphery of the first air inlet channel, a first flanging is arranged on the first flow dividing piece, the first flanging extends along the periphery of the flow dividing cavity, and the first flanging is attached to the installation surface.

In one embodiment, the segmented combustion apparatus further comprises a seal disposed between the first flange and the mounting face.

In one embodiment, the first air inlet passage comprises a first injection section, a first contraction section and a first mixing section which are sequentially communicated, the first mixing section is communicated with the flow dividing cavity, and the cross-sectional area S of the first contraction section₃The flow velocity is gradually reduced from one end of the first contraction section close to the first injection section to one end of the first contraction section close to the first mixing section.

In one embodiment, the second air inlet passage comprises a second injection section, a second contraction section and a second mixing section which are sequentially communicated, the second mixing section is communicated with the second mixing cavity, and the cross-sectional area S of the second contraction section₄The flow velocity is gradually reduced from one end of the second contraction section close to the second injection section to one end of the second contraction section close to the second mixing section.

In one embodiment, the staged combustion device further comprises a cover closing an end of the third mixing chamber distal to the first body.

In one embodiment, the staged combustion device further includes a second flow divider embedded in the second main body and dividing the third mixing chamber into a first flow divider chamber and a second flow divider chamber surrounding the first flow divider chamber, the first flow divider chamber is communicated with the flow divider chamber, the second flow divider chamber is communicated with the second fire hole, and a second air outlet hole communicated with the first flow divider chamber and the second flow divider chamber respectively is formed in the second flow divider.

In one embodiment, the first shunt part is provided with a second flange, the second flange extends along the periphery of the shunt cavity, the second shunt part is provided with a third flange, the third flange extends along the periphery of the first shunt cavity, and the third flange is attached to the second flange and the edge of the first main body.

The second technical problem is solved by the following technical scheme:

a gas water heater comprising a segmented combustion device as claimed in any one of the above.

Compared with the background technology, the gas water heater of the utility model has the following beneficial effects: by adopting the sectional type combustion device, in the using process, the mixed gas of gas and air can be alternatively or simultaneously introduced into the first air inlet channel and the second air inlet channel. When the mixed gas is introduced into the first gas inlet channel, the mixed gas flows into the flow dividing cavity and flows into the third mixing cavity under the action of the flow dividing cavity; the air flow flowing into the third mixing chamber finally flows out of the second fire hole of the second body. When the mixed gas is introduced into the second gas inlet channel, the mixed gas flows into the second mixing cavity; then flows into the first mixing cavity from the first air outlet on the gas distributing body; and finally flows out of the first fire hole on the first main body. So for the mist flows from different high positions, effectively satisfies the demand that the different load of user burnt, realizes burner's sectional combustion. This sectional type burner utilizes first reposition of redundant personnel to form the second hybrid chamber in minute gas at the in-process that admits air for the mist that gets into by second inlet channel does not directly get into first hybrid chamber in, but in returning to the entering minute gas, flows into first hybrid chamber by the first venthole on the minute gas again. So effectively prolong mist's circulation route for gas and air intensive mixing improve the mixture degree of consistency of gas, are favorable to promoting the segmentation burning characteristic.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of a staged combustion device according to an embodiment;

FIG. 2 is an exploded view of a segmented combustion device according to one embodiment;

FIG. 3 is a bottom schematic view of a segmented combustion device configuration according to one embodiment;

FIG. 4 is a sectional view of a segmented combustion device according to an embodiment.

Reference numerals:

100. a staged combustion device; 110. a first body; 111. a first fire hole; 112. a first mixing chamber; 113. a fourth flanging; 120. gas separation; 121. a first air intake passage; 1211. a first injection section; 1212. a first constriction section; 1213. a first mixing section; 122. a second intake passage; 1221. a second injection section; 1222. a second constriction section; 1223. a second mixing section; 123. a first air outlet hole; 124. a second mixing chamber; 125. a gas distributing part; 126. an air intake portion; 127. a mounting surface; 1271. a groove; 130. a first flow dividing member; 131. a shunting cavity; 132. a first flanging; 133. second flanging; 140. a second body; 141. a third mixing chamber; 1411. a first molecular cavity; 1412. a second lumen; 142. a second fire hole; 143. fifthly, flanging; 150. a second flow divider; 151. a second air outlet; 152. third flanging; 160. a seal member; 170. and (7) sealing the cover.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In one embodiment, referring to fig. 1, 2 and 4, a staged combustion device 100, the staged combustion device 100 comprises: the gas distributor comprises a first body 110, a gas distributing body 120, a first flow dividing member 130 and a second body 140. The first body 110 is provided with a first fire hole 111. The sub-gas 120 is embedded in the first body 110, and a first mixing chamber 112 is formed between the sub-gas 120 and the first body 110, and a first gas inlet channel 121 and a second gas inlet channel 122 are arranged on the sub-gas 120 at intervals. The first flow divider 130 is embedded in the gas component 120, and forms a second mixing chamber 124 communicating with the second gas inlet passage 122 with the gas component 120. The gas-distributing body 120 is provided with a first gas outlet 123 respectively communicated with the first mixing cavity 112 and the second mixing cavity 124. The first flow dividing member 130 is provided therein with a flow dividing chamber 131 communicating with the first intake passage 121. The second body 140 is stacked on the first body 110, and a third mixing chamber 141 communicating with the flow dividing chamber 131 is provided in the second body 140. The end of the third mixing chamber 141 remote from the first body 110 is in a closed state. The second body 140 is provided with a second fire hole 142.

In the sectional combustion device 100, during use, the gas and air mixture may be alternatively or simultaneously introduced into the first intake passage 121 and the second intake passage 122. When the mixed gas is introduced into the first gas inlet channel 121, the mixed gas flows into the diversion cavity 131 and flows into the third mixing cavity 141 under the action of the diversion cavity 131; the air flowing into the third mixing chamber 141 finally flows out of the second fire hole 142 of the second body 140. When the mixed gas is introduced into the second gas inlet passage 122, the mixed gas flows into the second mixing cavity 124; then flows into the first mixing chamber 112 from the first gas outlet 123 on the gas component 120; and finally flows out of the first fire holes 111 of the first body 110. So for the mist flows from different high positions, effectively satisfies the demand that the different load of user burnt, realizes burner's sectional combustion. In the air intake process of the sectional type combustion apparatus 100, the first flow dividing member 130 is used to form the second mixing cavity 124 in the divided gas 120, so that the mixed gas entering from the second air intake passage 122 does not directly enter the first mixing cavity 112, but returns to the divided gas 120, and then flows into the first mixing cavity 112 through the first air outlet 123 on the divided gas 120. So effectively prolong mist's circulation route for gas and air intensive mixing improve the mixture degree of consistency of gas, are favorable to promoting the segmentation burning characteristic.

It should be noted that the number of the first air inlet channels 121 may be determined based on the heat load of the gas water heater and the segment open-shift overlap value, and is not particularly limited in this embodiment. Meanwhile, in order to facilitate the sectional type combustion apparatus 100 to be applied to a cylindrical gas water heater, the first body 110 and the second body 140 may be both shaped like a cylindrical structure (e.g., cylindrical).

Alternatively, the first fire holes 111 may be, but not limited to, round holes, strip-shaped holes, elliptical holes, polygonal holes, or other holes of different shapes; of course, the first fire hole 111 may be a combination of holes of various shapes. Similarly, the second fire holes 142 can be, but are not limited to, round holes, strip-shaped holes, elliptical holes, polygonal holes, or other holes with different shapes; of course, the second fire holes 142 may be a combination of holes having various shapes. In addition, the arrangement of the first fire holes 111 on the first device body has various modes, and only the mixed gas needs to flow out.

Further, referring to fig. 3, the number of the second intake passages 122 is two or more. Two or more second intake passages 122 are provided at intervals along the periphery of the first intake passage 121. Therefore, the mixed gas introduced from the second air inlet passage 122 uniformly surrounds the periphery of the first air inlet passage 121, which is beneficial to ensuring the mixed gas to uniformly flow out on the first body 110, and further improving the stability of combustion.

Specifically, referring to fig. 3, the number of the second air intake passages 122 is four, and four second air intake passages 122 are uniformly spaced along the periphery of the first air intake passage 121.

In one embodiment, referring to fig. 2, the first air outlet 123 is multiple. A first air outlet hole 123 is formed between any two adjacent second air inlet channels 122. Therefore, the first air outlet 123 and the second air inlet passage 122 on the sub-gas 120 are arranged in a staggered manner, that is, the mixed gas flowing out from the second air inlet passage 122 cannot directly flow out from the first air outlet 123, so that the mixed gas is ensured to have certain residence time in the second mixing cavity 124, and the mixing uniformity between the gas and the air is improved. Meanwhile, the first air outlet 123 is arranged between any two adjacent second air inlet channels 122, so that the mixed gas can uniformly flow out of the gas component 120, and the uniformity of the fuel gas on the first main body 110 is ensured.

It should be noted that the first outlet 123 has various shapes on the gas component 120, such as: the first air outlet holes 123 can be circular holes, strip-shaped holes, elliptical holes, polygonal holes or other holes with different shapes; of course, the first outlet hole 123 may be a combination of holes of various shapes.

In one embodiment, referring to fig. 2, the gas component 120 includes an inlet portion 126 and a gas component 125 connected to the inlet portion 126. The first intake passage 121 and the second intake passage 122 are both provided on the intake portion 126. The first flow divider 130 is embedded in the gas distribution portion 125, and forms a second mixing chamber 124 with the gas distribution portion 125. The first outlet hole 123 is disposed on the gas distribution portion 125.

In one embodiment, referring to FIG. 4, the cross-sectional area S of the shunting cavity 131₁From the branch chamber 131 to the firstOne end of the air inlet channel 121 gradually increases to one end of the flow dividing cavity 131 close to the second body 140, that is, the flow dividing cavity 131 is a diffuser section with respect to the flow of the fuel gas. When the mixed gas flows into the branch chamber 131 from the first air inlet channel 121, the diffusion design of the branch chamber 131 may cause the flow rate of the mixed gas to be reduced, so that the mixed gas meets the working pressure required by the staged combustion device 100.

In one embodiment, referring to fig. 4, the cross-sectional area S of the outer side of the first flow splitter 130 facing away from the flow splitting cavity 131₂The size of the first flow dividing member 130 increases from the end of the first flow dividing member 130 close to the first air inlet channel 121 to the end of the first flow dividing member 130 close to the second main body 140, that is, the outer side surface of the first flow dividing member 130 is funnel-shaped. When the mixed gas flows along the outer side of the first flow divider 130 toward the second main body 140, the funnel-shaped outer side presses the mixed gas toward the first gas outlet 123 on the gas divider 120; meanwhile, as the mixed gas flows, the pressure of the mixed gas is greater, so that the mixed gas in the second mixing chamber 124 is ensured to flow out of the first gas outlet hole 123.

In one embodiment, referring to FIG. 4, a mounting surface 127 is disposed in the gas distribution chamber 120. The mounting surface 127 extends along the periphery of the first intake passage 121. The first splitter 130 is provided with a first flange 132. The first flange 132 extends along the outer periphery of the branch chamber 131. The first flange 132 is attached to the mounting surface 127, so as to ensure that the first splitter 130 is stably mounted in the gas distributing body 120.

Further, referring to FIG. 2, the staged combustion device 100 further includes a seal 160. The sealing member 160 is disposed between the first flange 132 and the mounting surface 127, so as to ensure tight coupling between the gas distributing member 120 and the first flow dividing member 130, and prevent the gas in the first gas inlet passage 121 from leaking into the second mixing chamber 124.

Further, referring to fig. 4, the mounting surface 127 is provided with a groove 1271. The groove 1271 is provided extending along the periphery of the first intake passage 121. The seal 160 fits into the groove 1271.

In one embodiment, referring to fig. 4, the first air inlet channel 121 includes a first injection section 1211 and a first contraction section 1 sequentially connected to each other212 and a first mixing section 1213. The first mixing section 1213 communicates with the flow splitting chamber 131. Cross-sectional area S of first necked section 1212₂The flow velocity gradually decreases from the end of the first contraction section 1212 near the first injection section 1211 to the end of the first contraction section 1212 near the first mixing section 1213. When the mixed gas flows into the first contraction section 1212 from the first injection section 1211, the mixed gas is gradually accelerated under the action of the first contraction section 1212, an entrainment effect is formed at one end of the first injection section 1211, and more primary air is sucked in to ensure that the fuel gas is fully combusted. Meanwhile, the sucked gas and air are premixed in the first contraction section 1212 and the first mixing section 1213, which ensures that the gas and air are mixed more sufficiently, and further improves the combustion characteristics of the sectional type combustion apparatus 100.

In one embodiment, referring to fig. 4, the second air inlet passage 122 includes a second injecting section 1221, a second contracting section 1222 and a second mixing section 1223 which are sequentially communicated. The second mixing section 1223 communicates with the second mixing chamber 124. The cross-sectional area S of the second constrictor 1222₄One end that is close to second from second shrink section 1222 and draws section 1221 to the one end that second shrink section 1222 is close to second mixing section 1223 reduces gradually, so, when the gas mixture flowed into second shrink section 1222 by second draw section 1221, can receive the effect of second shrink section 1222 and accelerate gradually, draw the one end of section 1221 at the second and form the entrainment effect, inhale more primary air, guarantee the abundant burning of gas.

Further, referring to fig. 4, the second mixing section 1223 is cylindrical, and the height h of the second mixing section 1223 is 1 to 5 times the inner diameter d of the second mixing section 1223. If the length of the second mixing section 1223 is too long, the internal resistance thereof increases, the flow rate of the fuel gas decreases, and the primary air intake decreases. If the length of the second mixing section 1223 is too short, the gas and air are not sufficiently mixed. Therefore, this embodiment effectively guarantees that gas and air realize more intensive mixing through the size of reasonable control second mixing section 1223.

In one embodiment, referring to FIG. 2, the staged combustion device 100 further includes a cover 170. The cover 170 closes an end of the third mixing chamber 141 remote from the first body 110. In this way, one end of the third mixing chamber 141 is closed by the cover 170, so that the mixed gas entering the third mixing chamber 141 can flow out of the second fire hole 142.

In one embodiment, referring to fig. 4, the staged combustion device 100 further includes a second flow splitter 150. The second flow dividing member 150 is embedded in the second body 140 and divides the third mixing chamber 141 into a first sub-chamber 1411 and a second sub-chamber 1412 surrounding the first sub-chamber 1411. The first shunt chamber 1411 communicates with the shunt chamber 131. The second branch chamber 1412 is communicated with the second fire hole 142, and the second branch member 150 is provided with a second air outlet 151 communicated with the first branch chamber 1411 and the second branch chamber 1412 respectively. It can be seen that when the mixed gas is introduced into the first gas inlet channel 121, the mixed gas flows through the branch chamber 131, the first branch chamber 1411 and the second branch chamber 1412 in sequence; and finally flows out of the second fire hole 142 through the second chamber body 1412 and is combusted. In the embodiment, the second flow divider 150 is used to divide the third mixing cavity 141 into an inner cavity and an outer cavity, so that the flow path of the mixed gas in the second main body 140 is effectively changed, the residence time of the mixed gas is prolonged, and the gas and the air are fully mixed.

Further, referring to fig. 2, the first shunting member 130 is provided with a second flange 133. The second flange 133 extends along the outer periphery of the distribution chamber 131. The second splitter 150 is provided with a third flange 152. Third flange 152 extends along the periphery of first compartment cavity 1411. The third flange 152 is attached to the second flange 133 and attached to the edge of the first body 110, so as to ensure the stable connection between the first splitter 130 and the second splitter 150 and improve the structural stability of the sectional type combustion apparatus 100.

Further, referring to fig. 2, the first body 110 is provided with a fourth flange 113. The fourth flange 113 extends along the edge of the first body 110, and the second flange 133 and the fourth flange 113 are both attached to the third flange 152. In addition, a fifth flange 143 is provided on the second body 140. The fifth flange 143 is attached to a side of the third flange 152 facing away from the fourth flange 113.

In one embodiment, referring to fig. 1 and 2, a gas water heater includes a staged combustion device 100 according to any of the above embodiments.

In the gas water heater using the sectional type combustion device 100, during use, the gas and air mixture may alternatively or simultaneously flow into the first air inlet channel 121 and the second air inlet channel 122. When the mixed gas is introduced into the first gas inlet channel 121, the mixed gas flows into the diversion cavity 131 and flows into the third mixing cavity 141 under the action of the diversion cavity 131; the air flowing into the third mixing chamber 141 finally flows out of the second fire hole 142 of the second body 140. When the mixed gas is introduced into the second gas inlet passage 122, the mixed gas flows into the second mixing cavity 124; then flows into the first mixing chamber 112 from the first gas outlet 123 on the gas component 120; and finally flows out of the first fire holes 111 of the first body 110. So for the mist flows from different high positions, effectively satisfies the demand that the different load of user burnt, realizes burner's sectional combustion. In the air intake process of the sectional type combustion apparatus 100, the first flow dividing member 130 is used to form the second mixing cavity 124 in the divided gas 120, so that the mixed gas entering from the second air intake passage 122 does not directly enter the first mixing cavity 112, but returns to the divided gas 120, and then flows into the first mixing cavity 112 through the first air outlet 123 on the divided gas 120. So effectively prolong mist's circulation route for gas and air intensive mixing improve the mixture degree of consistency of gas, are favorable to promoting the segmentation burning characteristic.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A segmented combustion device, characterized in that the segmented combustion device (100) comprises:

the fire alarm device comprises a first main body (110), wherein a first fire hole (111) is formed in the first main body (110);

the gas distributing body (120) is embedded in the first main body (110), a first mixing cavity (112) is formed between the gas distributing body (120) and the first main body (110), and a first gas inlet channel (121) and a second gas inlet channel (122) are arranged on the gas distributing body (120) at intervals;

the first flow dividing piece (130) is embedded in the gas dividing body (120), a second mixing cavity (124) communicated with the second gas inlet channel (122) is formed between the first flow dividing piece (130) and the gas dividing body (120), a first gas outlet hole (123) communicated with the first mixing cavity (112) and the second mixing cavity (124) is formed in the gas dividing body (120), and a flow dividing cavity (131) communicated with the first gas inlet channel (121) is formed in the first flow dividing piece (130);

the second main body (140), the second main body (140) overlap and locate on first main body (110), be equipped with in second main body (140) with third mixing chamber (141) of reposition of redundant personnel chamber (131) intercommunication, the one end that third mixing chamber (141) kept away from first main body (110) is in the encapsulated situation, be equipped with second fire hole (142) on second main body (140).

2. The staged combustion device according to claim 1, wherein the second intake passage (122) is two or more, and wherein the two or more second intake passages (122) are spaced apart along the periphery of the first intake passage (121).

3. The segmented combustion device according to claim 2, wherein the number of the first air outlet holes (123) is multiple, and the first air outlet holes (123) are arranged between any two adjacent second air inlet channels (122).

4. The segmented combustion device according to claim 1, wherein the cross-sectional area S of the splitter chamber (131)₁Gradually increases from one end of the distribution chamber (131) near the first air inlet passage (121) to one end of the distribution chamber (131) near the second body (140); and/or the presence of a gas in the gas,

the first flow dividing element (130) faces away from the outer lateral cross-sectional area S of the flow dividing chamber (131)₂Gradually increases from an end of the first flow dividing member (130) near the first intake passage (121) to an end of the first flow dividing member (130) near the second body (140).

5. The segmented combustion device according to claim 1, wherein a mounting surface (127) is arranged in the branched gas (120), the mounting surface (127) extends along the periphery of the first intake passage (121), a first flange (132) is arranged on the first flow dividing member (130), the first flange (132) extends along the periphery of the flow dividing cavity (131), and the first flange (132) is attached to the mounting surface (127).

6. The segmented combustion device of claim 5, wherein the segmented combustion device (100) further comprises a seal (160), the seal (160) disposed between the first bead (132) and the mounting face (127).

7. The staged combustion device according to any of claims 1 to 6, wherein the first air inlet channel (121) comprises a first injection section (1211), a first contraction section (1212) and a first mixing section (1213) which are sequentially communicated, the first mixing section (1213) is communicated with the flow splitting chamber (131), and the first contraction section (1212) has a cross-sectional area S₃The flow velocity is gradually reduced from one end of the first contraction section (1212) close to the first injection section (1211) to one end of the first contraction section (1212) close to the first mixing section (1213); and/or the presence of a gas in the gas,

the second air inlet passage (122) comprises a second injection section (1221), a second contraction section (1222) and a second mixing section (1223) which are sequentially communicated, the second mixing section (1223) is communicated with the second mixing cavity (124), and the cross-sectional area S of the second contraction section (1222) is₄The diameter of the second contraction section (1222) is gradually reduced from the end of the second injection section (1221) to the end of the second contraction section (1222) close to the second mixing section (1223); and/or the presence of a gas in the gas,

the segmented combustion apparatus (100) further comprises a cover (170), the cover (170) closing an end of the third mixing chamber (141) remote from the first body (110).

8. The staged combustion device according to any of claims 1 to 6, wherein the staged combustion device (100) further comprises a second flow divider (150), the second flow divider (150) is embedded in the second body (140) and divides the third mixing chamber (141) into a first chamber (1411) and a second chamber (1412) surrounding the first chamber (1411), the first chamber (1411) is communicated with the flow divider (131), the second chamber (1412) is communicated with the second fire hole (142), and the second flow divider (150) is provided with a second outlet hole (151) respectively communicated with the first chamber (1411) and the second chamber (1412).

9. The segmented combustion device according to claim 8, wherein a second flange (133) is arranged on the first flow dividing member (130), the second flange (133) extends along the periphery of the flow dividing cavity (131), a third flange (152) is arranged on the second flow dividing member (150), the third flange (152) extends along the periphery of the first flow dividing cavity (1411), and the third flange (152) is attached to the second flange (133) and the edge of the first main body (110).

10. A gas water heater characterized in that it comprises a segmented combustion device (100) according to any one of claims 1 to 9.

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