CN114396621A - Fire exhausts, burners and gas water heaters - Google Patents

Abstract

The application belongs to the technical field of water heaters, and in particular relates to a fire exhaust, a burner and a gas water heater. The purpose of the present application is to solve the problem that the gap between two adjacent fire exhausts forms a secondary air passage and the secondary air has poor uniformity. The fire extinguisher of the present application includes an inner shell, an outer shell and a baffle plate assembly, wherein the outer shell is located on the outer side of a part of the inner shell, and there is a space between the outer shell and a part of the inner shell on the inner side to form a secondary air outlet channel; the inner shell forms a first ejection The secondary air intake channel and the secondary air intake channel are connected to form a secondary air channel, which provides secondary air for combustion, improves the sufficiency and uniformity of combustion, and improves the combustion effect. . The baffle assembly is located on the inner side of the inner shell, there is a space between the baffle assembly and the inner shell to form an auxiliary airflow channel, the baffle assembly forms a main airflow channel, and the main airflow channel is respectively communicated with the first ejection channel and the auxiliary airflow channel for combustion respectively. A main flame and a secondary flame are formed.

Description

Fire exhausts, burners and gas water heaters

technical field

The application belongs to the technical field of water heaters, and in particular relates to a fire exhaust, a burner and a gas water heater.

Background technique

Gas water heater refers to the use of gas as fuel, the mixed air and gas are burned in the combustion chamber through the burner to generate high-temperature flue gas, and the high-temperature flue gas flows into the heat exchanger and exchanges heat with the cold water in the heat exchanger to prepare hot water. The purpose of a gas appliance is widely used because of its advantages of convenient use and rapid preparation of hot water.

In the related art, the atmospheric burner utilizes the gap between two adjacent fire exhausts as a secondary air passage, which communicates with the secondary air holes provided at the bottom of the burner to provide secondary air for combustion.

However, the gap between two adjacent fire exhausts forms a secondary air passage, so that the two fire exhausts share the air in one secondary air passage. Not only is the amount of secondary air insufficient, but also the uniformity of the secondary air is poor, resulting in poor combustion. Uniform and insufficient, affecting work efficiency.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problems that the gap between two adjacent fire exhausts forms a secondary air passage and the secondary air has poor uniformity, the present application provides a fire exhaust and a burner. and gas water heaters.

The fire extinguisher comprises: an inner shell, a baffle plate assembly and an outer shell covering part of the outer side of the inner shell; there is a space between the outer shell and a part of the inner shell to form a secondary air outlet channel; the inner shell Located on the outside of the baffle assembly, the inner shell forms a first ejection channel and a secondary air intake channel, and the secondary air intake channel and the secondary air outlet channel communicate with each other to form a secondary air intake channel. an air channel; the baffle plate assembly forms a main airflow channel, there is a space between the baffle plate assembly and the inner shell to form an auxiliary airflow channel, and the main airflow channel is respectively connected with the first ejection channel and the auxiliary airflow channel The air flow channel communicates.

In the optional technical solution of the above fire row, the baffle plate assembly includes a plurality of baffle plates, the multiple baffle plates are parallel, and the multiple baffle plates are arranged in sequence along the thickness direction of the baffle plates; two adjacent baffle plates are arranged in sequence; At least a partial area of the baffle plate is spaced to form the main airflow channel; the two baffle plates outside the baffle plate assembly are defined as outer baffle plates, and the partial area of the outer baffle plate is connected to all the two sides of the baffle plate. The inner shell is welded, and the auxiliary airflow channel is formed between the part of the outer baffle above the welding position and the inner shell; the outer baffle above the welding position is provided with a connection between the auxiliary airflow channel and the main The first through hole of the airflow channel.

In the optional technical solution of the above fire row, the top end of the partition plate is provided with a first welding part, and all the first welding parts of the partition plate are welded to form the partition plate assembly; the first welding part connects all the partition plates. The air outlet port of the main air flow channel is divided into at least two main flame ports.

In an optional technical solution of the above fire row, the baffle plate assembly has a middle plane, and the baffle plate assembly is symmetrical about the middle plane; each baffle plate protrudes toward the middle plane to form the first Welding Department.

In the optional technical solution of the above-mentioned fire row, the bottom end of the outer partition is provided with a second welding part, and the second welding part is welded with the partition adjacent to the inner side of the outer partition. The second welding portion is opposite to the first welding portion.

In the optional technical solution of the above fire row, the bottom end of the outer partition is located above the adjacent partitions on the inner side of the outer partition, and the second welding portion extends downward to form a second connecting bar , the second connecting strip extends to the bottom end of the partition plate adjacent to the inner side of the outer partition plate, and the second connection strip is welded with the partition plate adjacent to the inner side of the outer partition plate.

In the optional technical solution of the above-mentioned fire row, at least one of the two adjacent partition plates protrudes toward the interval between the two partition plates to form abutting support bosses.

In an optional technical solution of the above-mentioned fire row, the outer shell includes two second side plates respectively located on both sides of the inner shell and a second connecting bar connected to the top ends of the two second side plates, Part of the second side plate and the inner casing are spaced to form the secondary air outlet channel; a part of the second side plate protrudes away from the inner casing to form a mounting boss.

The burner includes: a combustion frame and the above-mentioned fire row, the combustion frame is provided with an air inlet, an air mixing hole and a secondary air hole, the air mixing hole is communicated with the first ejection channel, and the secondary air The hole is communicated with the secondary air inlet channel, the opening direction of the air mixing hole and the secondary air hole are the same, and the opening direction of the air inlet is different from the opening direction of the air mixing hole.

The gas water heater includes: a water tank, a fan and the above-mentioned burner, the water tank is installed at the top end of the burner, the fan is installed at the bottom end of the burner, and the air outlet of the fan is connected to the burner. The air inlet of the burner is communicated.

It can be understood by those skilled in the art that the fire exhaust, the burner and the gas water heater of the present application include an inner shell, an outer shell and a baffle plate assembly, wherein the outer shell is located outside part of the inner shell, and the outer shell and part of the inner shell inside it There is an interval between them to form a secondary air outlet channel; the inner shell forms a first ejection channel and a secondary air intake channel, and the secondary air intake channel and the secondary air outlet channel are connected to form a secondary air channel, Provide secondary air for combustion, improve the sufficiency and uniformity of combustion, and improve the combustion effect. The baffle assembly is located on the inner side of the inner shell, there is a space between the baffle assembly and the inner shell to form an auxiliary airflow channel, the baffle assembly forms a main airflow channel, and the main airflow channel communicates with the first ejection channel and the auxiliary airflow channel respectively. In this way, the mixed gas of primary air and gas enters the main air flow channel through the first ejection channel, and burns to form the main flame; part of the mixed gas enters the auxiliary air flow channel and burns to form the auxiliary flame. The secondary air passage in the embodiment of the present application is arranged in the fire row, which can reduce the interval between the fire rows and make the burner structure more compact.

Description of drawings

The optional embodiments of the fire exhaust, the burner and the gas water heater of the present application will be described below with reference to the accompanying drawings. Attached is:

1 is a schematic structural diagram of a fire row provided by an embodiment of the present application;

2 is a front view of a fire row provided by an embodiment of the present application;

Fig. 3 is A-A sectional view in Fig. 2;

4 is a schematic structural diagram of a partition plate assembly of a fire row provided by an embodiment of the present application;

5 is an exploded view of the baffle plate assembly of the fire row provided by the embodiment of the present application;

6 is a front view of a partition plate assembly of a fire row provided by an embodiment of the present application;

Fig. 7 is B-B sectional view in Fig. 6;

Fig. 8 is the enlarged schematic diagram of P region in Fig. 7;

9 is a schematic structural diagram of an inner shell of a fire row provided by an embodiment of the present application;

10 is a schematic structural diagram of a burner provided by an embodiment of the present application;

FIG. 11 is an exploded view of the burner provided by the embodiment of the present application.

In the drawings: 1000: fire row; 100: inner shell; 110: first ejection channel; 111: first section; 112: second section; 113: third section; 114: fourth section; 115: fifth section Section; 120: Secondary air intake channel; 121: Air passage plate; 1211: Second through hole; 130: First side plate; 131: First welding boss; connecting part; 151: abutting plane; 160: welding area; 200: housing; 201: secondary air outlet; 210: second side plate; 211: first abutting boss; 212: second abutting boss 213: Barrier convex strip; 214: Mounting boss; 220: Second connecting strip; 300: Partition plate assembly; 301: Main airflow channel; 302: Auxiliary airflow channel; 310: Inner partition plate; 320: Outer partition plate 321: The first via hole; 322: The second welding part; 330: The first welding part; 331: The main flame port; 341: The first supporting boss; 342: The second supporting boss; ;350: Second connecting strip; 410: Combustion frame; 411: Air mixing hole; 412: Secondary air hole; 420: Combustion chamber shell; 421: Air inlet; ; 432: The second air adjustment hole; 433: The third air adjustment hole.

Detailed ways

First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adjust it as needed to adapt to specific applications.

Secondly, it should be noted that, in the description of the embodiments of the present application, the terms of direction or positional relationship indicated by the terms "inner" and "outer" are based on the direction or positional relationship shown in the drawings, which is only for convenience It is described, not indicated or implied, that the device or component must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation on the embodiments of the present application.

In addition, it should be noted that, in the description of the embodiments of the present application, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a Removal connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

For partial premixed combustion, the gas and the required air are partially mixed in advance, and the air at this time is called primary air; then the mixed gas flows out from the fire hole, and after ignition, part of the gas is first burned by the primary air to form the flame of the flame Heart, also known as inner cone. The rest of the gas is mixed with the combustion products, and diffused, transferred and reburned with the surrounding air. The air mixed at this time is called secondary air, and the formed flame is commonly known as the outer cone. The flame structure formed by this combustion is often called a Bunsen flame, and the burner formed by this combustion principle is called an atmospheric burner.

In the related art, the atmospheric burner utilizes the gap between two adjacent fire exhausts as a secondary air passage, which communicates with the secondary air holes provided at the bottom of the burner to provide secondary air for combustion. However, the gap between two adjacent fire exhausts forms a secondary air passage, so that the two fire exhausts share the air in one secondary air passage. Not only is the amount of secondary air insufficient, but also the uniformity of the secondary air is poor, resulting in poor combustion. Uniform and insufficient, affecting work efficiency.

In view of this, the embodiments of the present application provide a fire exhaust, a burner and a gas water heater, wherein a secondary air channel is integrated in the fire exhaust to provide secondary air for combustion, improve the sufficiency and uniformity of combustion, and improve combustion effect; and the gap between adjacent fire rows can be reduced, so that the structure of the burner is more compact.

The preferred technical solutions of the fire exhaust, the burner and the gas water heater of the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a fire row provided by an embodiment of the present application; FIG. 2 is a front view of the fire row provided by an embodiment of the present application; and FIG. 3 is an A-A cross-sectional view in FIG. 2 .

With reference to FIGS. 1 to 3 , an embodiment of the present application provides a fire extinguisher, which includes: an inner shell 100 , a baffle plate assembly 300 , and an outer shell 200 covering part of the inner shell 100 .

Wherein, the outer shell 200 is located on the outer side of part of the inner shell 100, there is a space between the outer shell 200 and the inner part of the inner shell 100 to form a secondary air outlet duct 201, and the outer shell 200 is connected with another part of the inner shell 100 inside, for example, welding. There are two secondary air outlet passages 201 , and the two secondary air outlet passages 201 are respectively located on both sides of the inner shell 100 .

The inner shell 100 forms a first ejection channel 110 and a secondary air intake channel 120, and the secondary air intake channel 120 and the secondary air outlet channel 201 are connected to form a secondary air channel to provide secondary air for combustion. A part of the inner shell 100 is located inside the outer shell 200 , and another part of the inner shell 100 is located outside the outer shell 200 . Specifically, part of the first ejection channel 110 and the secondary air intake channel 120 are located inside the outer shell 200 .

The baffle assembly 300 is located on the inner side of the inner shell 100 , there is a space between the baffle assembly 300 and the inner shell 100 to form an auxiliary airflow channel 302 , the baffle assembly 300 forms a main airflow channel 301 , and the main airflow channel 301 is respectively connected to the first ejection channel. 110 and the auxiliary airflow channel 302 communicate with each other. Such a mixed gas of primary air and fuel gas enters the main airflow channel 301 through the first ejection channel 110 and burns to form a main flame; part of the mixed gas enters the auxiliary airflow channel 302 and burns to form an auxiliary flame.

It can be understood that there are two auxiliary air flow channels 302, which are located on both sides of the main air flow channel 301, and can play the role of gathering the main flame; there are also two secondary air outlet channels 201, which are respectively located in the auxiliary air flow channel 301. The outer side of the channel 302 provides secondary air for combustion, and can also prevent the auxiliary flame from spreading out, so as to gather the flame.

4 is a schematic structural diagram of a partition plate assembly of a fire row provided by an embodiment of the present application;

Fig. 5 is an exploded view of the baffle plate assembly of the fire row provided by the embodiment of the present application; Fig. 6 is a front view of the baffle plate assembly of the fire row provided by the embodiment of the present application; Fig. 7 is a B-B sectional view in Fig. 6;

FIG. 8 is an enlarged schematic view of the P region in FIG. 7 .

With reference to FIGS. 2 , 3 and 4 , the baffle plate assembly 300 of the embodiment of the present application includes a plurality of baffle plates, for example, the inner baffle plate 310 and the outer baffle plate 320 in FIG. 4 . The plurality of separators are parallel, and the plurality of separators are arranged in sequence along the thickness direction of the separators, and at least partial regions of the two adjacent separators are spaced to form the main airflow channel 301 . In the drawings, four partitions are provided, and the four partitions are arranged at intervals along the Y-axis direction. At this time, three main airflow channels 301 are formed. That is, when the baffle plate assembly 300 includes N baffle plates, the baffle plate assembly 300 forms N+1 main airflow channels 301 , where N is an integer greater than 2. The embodiments of the present application do not limit the number of separators in the separator assembly.

The two baffles on the outside of the baffle assembly 300 are defined as an outer baffle 320 , and the adjacent baffles on the inner side of the outer baffle 320 are defined as an inner baffle 310 . The embodiments of the present application are described by taking the separator assembly 300 including two outer separators 320 and two inner separators 310 as an example, but this is not a limitation on the number of separators.

Part of the outer partition plate 320 is welded with the inner shell 100 on both sides, and an auxiliary airflow channel 302 is formed between the part of the outer partition plate 320 above the welding position and the inner shell 100 . Referring to FIG. 9 , FIG. 9 is a schematic structural diagram of the inner shell of the fire row provided by the embodiment of the present application. The outer shell 200 is provided with a first welding boss 131 , and the outer partition 320 is welded with the first welding boss 131 . A partial area of the housing 200 protrudes toward the baffle assembly 300 to form a first welding boss 131 , and the first welding boss 131 is a long strip extending along the X-axis direction. The first welding boss 131 is welded to the outer baffle 320 to realize the fixed connection between the baffle assembly 300 and the inner shell 100 , and at the same time, the first welding boss 131 separates the first ejection channel 110 from the auxiliary airflow channel 302 .

The outer baffle 320 above the welding position is provided with a first through hole 321 that communicates with the auxiliary airflow channel 302 and the main airflow channel 301 . In this way, part of the mixed gas in the main airflow channel 301 enters the auxiliary airflow channel 302 through the first through hole 321 , and the mixed gas in the auxiliary airflow channel 302 burns at the outlet port of the auxiliary airflow channel 302 to form an auxiliary flame.

The air outlet port of the main air flow channel 301 is flush with the air outlet port of the auxiliary air flow channel 302, so that the main flame and the auxiliary flame burn on the same plane, and the combustion effect is improved.

4 and 5 , the top of the partition plate is provided with a first welding part 330, and the first welding part 330 of all the partition plates is welded to form the partition plate assembly 300; the first welding part 330 separates the air outlet port of the main airflow channel 301 into At least two main flame ports 331.

The inner partitions 310 and the outer partitions 320 are respectively provided with first welding parts 330 , and the first welding parts 330 of all the inner partitions 310 and the first welding parts 330 of all the outer partitions 320 are welded to form the partition assembly 300 .

One first welding part 330 may be provided on each partition, or a plurality of first welding parts 330 may be provided on each partition, and the plurality of first welding parts 330 may be arranged at intervals along the length direction of the partition. Exemplarily, four first welding parts 330 are respectively provided on each partition, which are respectively defined as ABCD from left to right. The first welding part A on each partition board is welded, the first welding part B on each partition board is welded, the first welding part C on each partition board is welded, and the first welding part D on each partition board is welded. The embodiment of the present application does not limit the number of the first welding portions 330 .

Optionally, the plurality of first welding portions 330 are evenly spaced along the X-axis direction, so that the main flame ports 331 formed are all the same size, so that the combustion of each flame is uniform. When there are M first welding parts 330 on each baffle, the outlet ports of the main airflow channel 301 are divided into M+1 main flame ports 331 , where M is an integer greater than or equal to 1.

The first ends of all the baffles are fixedly connected, and the second ends of all the baffles are fixedly connected, such as welding, so as to facilitate the fixed connection with the end of the inner shell 100 .

4 and 6 , when a plurality of main flame ports 331 are formed, there are various arrangements of the first via holes 321 . Exemplarily, the first through holes 321 are elongated holes extending along the X-axis direction, and one first through hole 321 corresponds to one main flame port 331 , which facilitates the processing of the first through holes 321 . Exemplarily, each main flame port 331 corresponds to a plurality of first through holes 321 , and the plurality of first through holes 321 are evenly spaced along the X-axis direction, so that when the mixed gas passes through the first through holes 321 , it can be further removed. uniformity, further improving the uniformity of combustion.

In some possible implementations, protruding bumps are provided on the separator, and the bumps are welded to form the first welding portion 330 . Such arrangement can not only realize welding, but also help to ensure the distance between two adjacent partition plates.

In other possible implementations, referring to FIGS. 7 and 8 , the baffle assembly 300 has a middle plane O, and the baffle assembly 300 is symmetrical about the middle plane O. Each baffle plate protrudes toward the middle plane O to form the first welding portion 330 , the outer baffle plate 320 protrudes toward the middle plane O to form the first welding portion 330 , and the inner baffle plate 310 protrudes toward the middle plane O to form the first welding portion 330 It can be understood that the distance between the inner baffle 310 and the middle plane O is small, and the protruding size is small; the distance between the outer baffle 320 and the middle plane O is large, and the bulging size is large. Such setting and processing are simple and convenient, which is beneficial to saving costs.

In order to ensure the distance between two adjacent partition plates, in this embodiment of the present application, at least one of the two adjacent partition plates is protruded toward the interval between the two partition plates to form abutting support bosses.

5 and 8 , a part of the outer partition 320 protrudes toward the inner partition 310 to form a first support boss 341 , and the first support boss 341 abuts against the inner partition 310 to ensure that the outer partition 320 and the inner The space between the baffles 320 . Wherein, the first support boss 341 can be a circular boss, an oval boss, an elongated boss, etc. The first support boss 341 can be provided with one or a plurality of first support bosses. 341 are arranged at intervals along the X-axis direction. 5 and 6 , the first supporting bosses 341 are circular, and there are two first supporting bosses 341 , which are located at two ends of the outer partition plate 320 respectively. The embodiment of the present application does not limit the shape, quantity and arrangement of the first support bosses 341 .

5 and 8 , a part of the inner partition 310 protrudes toward the middle plane O to form a second supporting boss 342 , and the second supporting bosses 342 of the two inner partitions 310 abut against each other to ensure that the two inner The space between the baffles 310 . Wherein, the second support boss 342 can be a circular boss, an oval boss, an elongated boss, etc. The second support boss 342 can be provided with one or a plurality of second support bosses. 342 are arranged at intervals along the X-axis direction. 5 and 6 , the second support bosses 342 are elongated bosses extending along the Z direction, there are five second support bosses 342 , and each main flame port 331 is provided with a second support boss 342 respectively. The embodiment of the present application does not limit the shape, quantity and arrangement of the second support bosses 342 .

5 and 8 , a part of the inner partition 310 protrudes toward the middle plane O to form a third support boss 343 , and the third support bosses 343 of the two inner partitions 310 abut against each other to ensure that the two inner The space between the baffles 310 . Wherein, the third support boss 343 can be a circular boss, an oval boss, an elongated boss, etc. The third support boss 343 can be provided with one or a plurality of third support bosses 343 are arranged at intervals along the X-axis direction. 5 and 6 , the third support bosses 343 are circular bosses, there are four third support bosses 343 , and each first welding portion 330 corresponds to one third support boss 343 respectively. The embodiment of the present application does not limit the shape, quantity and arrangement of the third support bosses 343 .

The baffle plate of the embodiment of the present application is provided with a support boss, which not only helps to ensure the interval between two adjacent baffle plates, but also can enhance the strength of the baffle plate, and can also play the role of blocking airflow and uniform airflow. .

4 to 6 , the bottom end of the outer partition plate 320 in the embodiment of the present application is provided with a second welding part 322, and the second welding part 322 is welded with the adjacent partition plate inside the outer partition plate 320, that is, the first welding part 322 is welded. The second welding portion 322 is welded with the inner baffle plate 310 to further improve the structural strength and stability of the baffle plate assembly 300 .

Optionally, the second welding portion 322 is opposite to the first welding portion 330, and the second welding portion 322 is in one-to-one correspondence with the first welding portion 330. This arrangement can make the upper and lower ends of the outer partition plate 320 bear balanced forces and ensure the structure. stability.

Optionally, a partial area of the outer partition plate 320 protrudes toward the inner partition plate 310 to form the second welding portion, which is simple and convenient to set and process, and is conducive to cost saving.

4 to 6, the bottom end of the outer partition plate 320 is located above the adjacent partition plate inside the outer partition plate 320, that is, the bottom end of the outer partition plate 320 is higher than the bottom end of the inner partition plate 310, In this way, a partial region of the bottom of the inner partition 310 is exposed to the outside. The second welding portion 322 extends downward to form a second connecting bar 350 , the second connecting bar 350 extends to the bottom end of the partition plate adjacent to the inner side of the outer partition plate 320 , and the second connecting strip 350 is adjacent to the inner side of the outer partition plate 320 . Welding of clapboards. That is to say, the second connecting bar 350 is welded with the inner partition plate 310 , and the second connecting bar 350 is an L-shaped bar.

In this embodiment of the present application, the openings at the bottom end of the baffle plate assembly 300 are not flush, so as to block the airflow, so that the airflow is separated here so as to enter different main flame ports 331 respectively.

Referring to FIGS. 1 to 3 , the outer shell 200 includes two second side plates 210 located on both sides of the inner shell 100 respectively, and a second connecting bar 220 connected to the top ends of the two second side plates 210 . Some of the second side plates 210 are connected with A secondary air outlet channel 201 is formed at intervals between the inner shells 100; the second connecting bars 220 are respectively connected with the top ends of the second side plates 210 on both sides, so that the distance between the two second side plates 210 can be ensured. , so as to avoid affecting the size of the outlet port of the secondary air outlet duct 201 . Optionally, a plurality of second connecting bars 220 are provided, and the plurality of second connecting bars 220 are evenly spaced along the X-axis direction to further improve the structural strength and stability of the top port of the second side plate 210 .

A partial area of the second side plate 210 protrudes away from the inner shell 100 to form a mounting boss 214 . When the fire row is installed in the burner, the installation bosses 214 of two adjacent fire rows are abutted, which improves the convenience and accuracy of the fire row installation, and helps to ensure the interval between the two adjacent fire rows. The mounting bosses 214 may be circular bosses, elliptical bosses, polygonal bosses, etc. One mounting boss 214 may be provided, multiple mounting bosses 214 may be provided, and multiple mounting bosses 214 may be provided along the X-axis direction interval setting. The embodiment of the present application does not limit the shape, quantity and arrangement of the mounting bosses 214 .

A partial area of the second side plate 210 protrudes toward the inner shell 100 to form a first abutment boss 211 and a second abutment boss 212 . The case 100 abuts. The second abutting boss 212 is located below the first abutting boss 211 , and the second abutting boss 212 abuts with the first side plate 130 forming the first ejection channel 110 .

The first abutting boss 211 may be an elongated boss extending along the Z-axis direction. A plurality of first abutting bosses 211 may be provided, and the plurality of first abutting bosses 211 are arranged at intervals along the X-axis direction. Referring to FIGS. 1 and 2 , between two adjacent first abutting bosses 211 , blocking protruding strips 213 are provided, and there is a gap between the blocking protruding strips 213 and the inner shell 100 . The strip 213 acts as a block to the airflow to prevent the airflow from being too large.

The shape, quantity and arrangement of the first abutting bosses 211 are not limited by the drawings.

The second abutting bosses 212 may be semicircular, elliptical, polygonal, etc. The embodiment of the present application does not limit the shape, quantity and arrangement of the second abutting bosses 212 .

In the embodiment of the present application, the first abutting boss 211 and the second abutting boss 212 are arranged on the second side plate 210 to keep the interval between the second side plate 210 and the inner shell 100 , that is, to ensure the discharge of secondary air. The size of the channel 201, and the first abutting boss 211 and the second abutting boss 212 can also play the role of blocking the airflow, which is beneficial to ensure the uniformity of the secondary air.

Optionally, the top end face of the second side plate 210 of the housing 200 protrudes from the air outlet port of the main airflow channel 301 , so that the secondary air can be restricted, so that the main flame can move toward the middle, and the flame burning effect can be improved.

1 to FIG. 3 and FIG. 9 , the inner shell 100 includes two opposite first side plates 130 , the partial regions of the two first side plates 130 are connected, and the partial regions of the two first side plates 130 are spaced apart to form the first side plates 130 . An ejection channel 110 and a secondary air intake channel 120 . The right and bottom ends of the two first side plates 130 are connected, for example, welded, edge-wrapped, and the like. The left partial regions of the two first side plates 130 are connected, and the partial regions form the intake port of the first ejection channel 110 and the intake port of the secondary air intake channel 120 . The top ends of the two first side plates 130 have ports spaced apart to form flame combustion.

Optionally, the intake port of the first ejection channel 110 is flush with the intake port of the secondary air intake channel 120, so that the air entering the first ejection channel 110 and the secondary air intake channel 120 can be improved. uniformity, and improve the convenience of the connection between the fire row and the combustion frame of the burner.

The inner shell 100 has opposing first and second sides, ie, the left and right sides of the orientation shown in FIG. 1 . 1 , the second side of the inner casing 100 is provided with a snap-fit port 140 for engaging with the combustion rack, and the top end of the second side of the inner casing 100 is engaged with the combustion rack, so that the second side of the fire rack is fixed on the on the burner. The first side of the outer casing 200 is fixedly connected with the first side of the inner casing 100 to form a first connecting portion 150 , and the bottom surface of the first connecting portion 150 forms an abutting plane 151 abutting against the combustion rack. The top end is snapped with the burner, so that the first side of the fire row is fixed on the burner. Therefore, the fire row is stably installed on the combustion frame, and the installation method is simple and reliable.

Continuing to refer to FIG. 9 , one end of the secondary air intake duct 120 away from its intake port is recessed inward to form an air passage plate portion 121 , and the air passage plate portion 121 is provided with a second through hole 1211 . The left end of the secondary air intake passage 120 is its intake port, and the side wall of the right end of the secondary air intake passage 120 is recessed inward to form an air passage plate portion 121, and the air passage plate portion 121 is arranged on the secondary air intake air. Both sides of lane 120 are divided. The air passage plate portion 121 is a flat plate portion, which is convenient for processing the second via hole 1211 . The second via hole 1211 is used to communicate the secondary air intake channel 120 and the secondary air outlet channel 201 . One second via hole 1211 may be provided, and multiple second via holes 1211 may be provided, for example, two. The shape of the second via hole 1211 can be arbitrary, for example, the second via hole 1211 is a waist-shaped hole. The embodiment of the present application does not limit the shape, number and arrangement of the second via holes 1211 .

In the embodiment of the present application, the second via hole 1211 is conveniently arranged by setting the air passage plate portion 121 , and the air passage plate portion 121 also makes the cross-sectional area of the right end of the secondary air intake channel 120 smaller than the cross-sectional area of the left end thereof, which is beneficial to The flow rate of the secondary air is increased, so that the secondary air quickly enters the secondary air outlet channel 201 . Wherein, the cross section of the secondary air intake channel 120 is a plane formed by cutting the YZ plane.

3 and 9 , the first ejection channel 110 in the embodiment of the present application includes a first section 111 , a second section 112 , a third section 113 , a fourth section 114 and a fifth section 115 that are communicated. The left end of the first section 111 is the intake port of the first ejection channel 110 , and the first section 111 extends along the X-axis direction. The left end of the first section 111 is communicated with the second section 112, and the first section 111 and the second section 112 are tangent, so that the mixed gas flows more smoothly. The third segment 113 communicates with the second segment 112 , the third segment 113 is substantially triangular, and the cross-sectional area of the third segment 113 gradually decreases from left to right. The shapes of the first section 111 , the second section 112 and the third section 113 are generally U-shaped channels opening to the left. In addition, the secondary air intake channel 120 is located in the U-shaped channel, and the first side plate 130 is contacted and welded between the secondary air intake channel 120 and the U-shaped channel, so that the second side plate 210 can be easily connected to the first side plate 130. The side plate 130 is welded, and is favorable for forming the secondary air outlet channel 201 .

The fourth section 114 communicates with the third section 113, and the fourth section 114 extends along the X-axis direction, so that the mixed gas can enter the main gas flow channel 301 along the X-axis direction. The fifth segment 115 communicates with the fourth segment 114 , the fifth segment 115 extends along the X-axis direction, and the fifth segment 115 is located above the fourth segment 114 .

The distance between the two first side plates 130 on both sides of the first segment 111 , that is, the dimension of the first segment 111 along the Y direction, is defined as the first interval; the two first side plates 130 on both sides of the second segment 112 The distance between them, that is, the dimension of the second segment 112 along the Y direction, is defined as the second interval; The dimension is defined as the third interval; the distance between the two first side plates 130 on both sides of the fourth segment 114 , that is, the dimension of the fourth segment 114 along the Y direction, is defined as the fourth interval; the two sides of the fifth segment 115 The distance between the two first side plates 130 , that is, the dimension of the fifth segment 115 along the Y direction, is defined as the fifth interval.

The second interval is smaller than the first interval, so that the welding area of the casing 200 is formed on the side wall of the second section 112; the third interval is smaller than the second interval, so that the first side plate 130 of the third section 113 and the There is a space between the two side plates 210 to facilitate the formation of the secondary air outlet channel 201 . The fourth interval is smaller than the third interval, so that the cross-sectional area of the fourth section 114 is smaller than the cross-sectional area of the third section 113, so that the flow rate and pressure of the mixed gas flow here change, so that the mixed gas passes through the fourth section. After the section 114, it becomes more uniform along the X direction, so that the mixed gas can be uniformly burned along the X direction. The fifth interval is greater than the fourth interval, which can avoid the bottom end of the baffle plate assembly 300 and avoid interference; and can also make the mixed gas flow into the main gas flow channel 301 in large quantities to improve the smoothness of the mixed gas flow.

The first side plate 130 , which forms part of the secondary air intake channel 120 , part of the first ejection channel 110 and the auxiliary air channel 302 , is spaced from the casing 200 to form the secondary air outlet channel 201 .

Specifically referring to FIGS. 3 and 9 , the second side plate 210 is welded with the first side plate 130 through the welding area 160 . The welding area 160 includes the six dotted elliptical areas in FIG. 9 . It should be understood that the dotted elliptical areas are only a general limitation of the position and range of the welding area 160 , and should not be understood as a specific description of the welding area 160 in this embodiment of the present application. Location and range limitations. The area of the first connecting part 150 on the left side of the outer casing 200 and the inner casing 100 , the first partial area at the left end of the secondary air intake duct 120 , the second partial area between the first partial area and the area of the first connecting part 150 , The third partial area of the lower part of the secondary air intake duct 120, the partial area of the second section 112 and the fourth partial area on the right side of the inner shell 100 are welded, so that the outer shell 200 is fixedly connected to the inner shell 100; the bottom of the outer shell 200 The end is open to match the top port of the inner shell 100 to form the air outlet port of the secondary air outlet duct 201 .

Therefore, the other partial regions of the U-shaped channel and the third section 113 and the above partial regions are spaced apart from the casing 200 to form the secondary air outlet channel 201 . When the secondary air passes through the channel separation of the corresponding part of the fourth section 114, the channel of this section extends along the X-axis direction, so that the secondary air can be evenly distributed along the X-axis direction. In addition, the cross-sectional area of the secondary air outlet channel 201 changes in the corresponding part of the fifth section 115, the corresponding part of the first welding boss 131 and the corresponding part of the upper area of the first welding boss 131, so that the flow rate of the secondary air is changed. And the pressure changes, so that the secondary air becomes more uniform in the X-axis direction, which is beneficial to improve the uniformity of combustion.

It should be noted here that the cross sections of each section of the first ejection channel 110 and each section of the secondary air outlet channel 201 refer to the section formed by cutting the YZ plane.

FIG. 10 is a schematic structural diagram of a burner provided by an embodiment of the present application; FIG. 11 is an exploded view of the burner provided by an embodiment of the present application.

Referring to FIGS. 10 and 11 , an embodiment of the present application provides a burner, which includes: a combustion rack 410 and a fire rack 1000 , and the fire rack 1000 is mounted on the combustion rack 410 . Wherein, a plurality of fire bars 1000 are provided, and the plurality of fire bars 1000 are arranged at intervals along the Y-axis direction. In FIG. 1 and FIG. 2 , only one fire row 1000 is shown, in fact, the number of fire rows 1000 is the same as that of the air mixing holes 411 provided on the combustion rack 410 .

The combustion frame 410 is provided with air mixing holes 411 and secondary air holes 412. The air mixing holes 411 communicate with the first injection channel 110 to input the mixed gas into the first injection channel 110; the secondary air holes 412 are connected to the secondary air intake. The sub-channel 120 is connected to input the secondary air to the secondary air outlet sub-channel 201 .

By setting the air mixing holes 411 in the combustion rack 410, the mixed gas entering each fire row 1000 can be balanced, and the secondary air holes 412 can be arranged to balance the secondary air entering each fire row 1000, and the combustion between each fire row 1000 can be improved. uniformity.

In order to further improve the uniformity of combustion, the burner of the embodiment of the present application further includes an air regulating plate 430, the air regulating plate 430 is fixed on the combustion frame 410, and the air mixing hole 411 and the secondary air are provided on the air regulating plate 430 and the combustion frame 410 The side plates of the holes 412 are fitted together. In addition, the air adjusting plate 430 is provided with a second air adjusting hole 432 facing the air mixing hole 411 , a third air adjusting hole 433 facing the secondary air hole 412 , and a first air adjusting hole 432 located below the second air adjusting hole 432 . Air adjustment hole 431. The first air adjusting hole 431 , the second air adjusting hole 432 and the third air adjusting hole 433 are all rectangular holes. In this embodiment of the present application, the air flow uniformity between the fire exhausts 1000 is uniform by setting the air regulating plate 430 .

The burner of the embodiment of the present application further includes a combustion chamber casing 420, which is located outside the combustion rack 410 and the wind adjustment plate 430, and is used to form a combustion space. The combustion chamber casing 420 is provided with an air inlet 421, and the air inlet 421 communicates with the air outlet of the fan of the gas water heater.

In the embodiment of the present application, the opening directions of the air mixing holes 411 and the secondary air holes 412 are the same. The opening direction of the air inlet 421 is different from the opening direction of the air mixing hole 411. In this way, the air entering from the air inlet 421 enters the air mixing hole 411 and the secondary air hole 412 through a passage, which can prevent the wind from the air inlet 421 from blowing directly to the air mixing hole 411. and secondary air holes 412, which affect the uniformity of combustion.

As shown in FIG. 10 and FIG. 11 , the opening direction of the air mixing holes 411 and the secondary air holes 412 is the negative direction of the X axis, and the opening direction of the air inlet 421 is the positive direction of the Z axis. At this time, a first cavity is formed between the bottom of the combustion rack 410 and the bottom of the combustion chamber casing 420 , and a second cavity is formed between the air regulating plate 430 and the combustion chamber casing 420 , so that the air inlet 421 The air enters the first cavity and enters the second cavity after initially uniform airflow through the first air adjustment hole 431; then part of the air enters the first ejection channel 110 through the second air adjustment hole 432 after uniform airflow again, and part of the air passes through The third air adjusting hole 433 again uniformly flows into the secondary air intake channel 120 .

In the embodiment of the present application, by setting the first air adjusting hole 431 , the second air adjusting hole 432 and the third air adjusting hole 433 on the air adjusting plate 430 , the air is double-regulated and the air entering each fire exhaust 1000 is improved. uniformity, thereby increasing the uniformity of combustion.

The embodiment of the present application further provides a gas water heater, which includes: a water tank, a fan, and the burner of the above-mentioned embodiments, the water tank is installed at the top of the burner, the fan is installed at the bottom end of the burner, and the air outlet of the fan is connected to the burner. The air inlet of the burner is connected, and the fan provides air for the burner to burn, and the high-temperature flue gas formed by the combustion of the burner's fire exhaust exchanges heat with the water tank, thereby heating the water in the water tank.

To sum up, in the gas water heater according to the embodiment of the present application, the fire exhaust 1000 includes the inner shell 100 , the outer shell 200 and the partition plate assembly 300 , wherein the outer shell 200 is located on the outer side of part of the inner shell 100 , and the outer shell 200 and part of the inner shell inside it There is an interval between 100 to form a secondary air outlet channel 201; the inner shell 100 forms a first ejection channel 110 and a secondary air intake channel 120, a secondary air intake channel 120 and a secondary air outlet channel 201 Connected to form a secondary air channel, providing secondary air for combustion, improving the sufficiency and uniformity of combustion, and improving the combustion effect. The baffle assembly 300 is located on the inner side of the inner shell 100, there is a space between the baffle assembly 300 and the inner shell 100 to form an auxiliary airflow channel 302, the baffle assembly 300 forms a main airflow channel 301, and the main airflow channel 301 is respectively connected with the first ejection channel 110 communicates with the auxiliary airflow channel 302 . Such a mixture of primary air and fuel gas enters the main airflow channel 301 through the first ejection channel 110 and burns to form a main flame; part of the mixed gas enters the auxiliary airflow channel 302 and burns to form an auxiliary flame. The secondary air passage in the embodiment of the present application is arranged in the fire exhaust 1000, which can reduce the interval between the fire exhausts and make the burner structure more compact.

So far, the technical solutions of the present application have been described with reference to the preferred embodiments shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. On the premise of not departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims (10)

1. A fire row, characterized in that it comprises: an inner shell, a baffle plate assembly and an outer shell wrapped on the outside of a part of the inner shell; There is a space between the outer shell and part of the inner shell to form a secondary air outlet channel; The inner shell is located on the outer side of the baffle assembly, and the inner shell forms a first ejection channel and a secondary air intake channel, the secondary air intake channel and the secondary air outlet channel Connect to form a secondary air channel; The baffle plate assembly forms a main air flow channel, there is a space between the baffle plate assembly and the inner shell to form an auxiliary air flow channel, and the main air flow channel communicates with the first ejection channel and the auxiliary air flow channel respectively . 2 . The fire row according to claim 1 , wherein the baffle plate assembly comprises a plurality of baffle plates, the multiple baffle plates are parallel, and the multiple baffle plates are in sequence along the thickness direction of the baffle plates. 3 . setting; at least part of the area of two adjacent partition plates is spaced to form the main airflow channel; The two baffles on the outside of the baffle assembly are defined as outer baffles, a part of the outer baffle is welded with the inner shells on both sides, and the part of the outer baffle above the welding position is connected to the inner shell on both sides. The auxiliary airflow channel is formed between the inner shells; the outer baffle above the welding position is provided with a first through hole connecting the auxiliary airflow channel and the main airflow channel. 3 . The fire row according to claim 2 , wherein the top end of the partition plate is provided with a first welding part, and all the first welding parts of the partition plate are welded to form the partition plate assembly; A welding part divides the air outlet port of the main air flow channel into at least two main flame ports. 4 . The fire row of claim 3 , wherein the baffle plate assembly has a middle plane, and the baffle plate assembly is symmetrical about the middle plane; each of the baffle plates protrudes toward the middle plane. 5 . The first welding portion is formed. 5 . The fire row according to claim 3 , wherein the bottom end of the outer partition is provided with a second welding part, and the second welding part is adjacent to the partition on the inner side of the outer partition. 6 . The plate is welded, and the second welded portion is opposite to the first welded portion. 6 . The fire row according to claim 5 , wherein the bottom end of the outer partition plate is located above the adjacent partition plates inside the outer partition plate, and the second welding portion extends downward. 7 . A second connecting strip is formed, the second connecting strip extends to the bottom end of the partition plate adjacent to the inner side of the outer partition plate, and the second connection strip is adjacent to the partition plate on the inner side of the outer partition plate. plate welding. 7 . The fire row according to claim 2 , wherein at least one of the two adjacent partition plates protrudes toward the interval between the two partition plates to form abutting support bosses. 8 . . 8. The fire row according to any one of claims 1-7, wherein the outer shell comprises two second side plates respectively located on both sides of the inner shell and connected to the two second sides a second connecting strip at the top of the plate, and a gap is formed between part of the second side plate and the inner shell to form the secondary air outlet channel; A partial area of the second side plate protrudes away from the inner shell to form a mounting boss. 9. A burner, characterized in that it comprises: a combustion rack and the fire exhaust according to any one of claims 1-8, wherein the combustion rack is provided with an air inlet, a mixing hole and a secondary air hole, the mixing The air hole is communicated with the first ejection channel, the secondary air hole is communicated with the secondary air intake channel, the opening direction of the air mixing hole and the secondary air hole are the same, and the opening of the air inlet is in the same direction. The opening direction is different from the opening direction of the air mixing holes. 10. A gas water heater, comprising: a water tank, a fan and the burner according to claim 9, wherein the water tank is installed at the top end of the burner, and the fan is installed at the bottom end of the burner , and the air outlet of the fan communicates with the air inlet of the burner.

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