Distributor and burner thereof

Abstract

The fire distributor comprises a fire distributor body, an annular gas cavity with an upward opening, a gas inlet arranged at the bottom of the fire distributor body, a gas outlet arranged at the bottom of the fire distributor body, and a gas outlet arranged at the bottom of the gas inlet, the gas baffle plate is arranged in the annular gas cavity and is positioned above the radial inner end of the gas inlet; the gas distribution plate is vertically arranged in the annular gas cavity, part of the gas distribution plate is located at the top of the gas baffle, an outer cavity is formed between the gas distribution plate and the outer cavity wall face of the annular gas cavity, and an inner cavity is formed between the gas baffle and the inner cavity wall face of the annular gas cavity; and the inner cavity is communicated with the air inlet through the outer cavity. The distributor is simple in structure, and the problems that pressure in the distributor is inconsistent, flames at the air outlets are not uniform and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to burner technical field especially relates to a kind of fire divider and its burner. BACKGROUND

[0002] Most of the existing burners on the market are double-ring fire burners, a few are three-ring fire burners, and very few are single-ring fire burners. In order to achieve better combustion effect, primary air and secondary air are needed for combustion flame.

[0003] For non-single-ring fire burners, a secondary air passage is generally provided between the inner ring and the outer ring, which divides the outer ring gas channel into multiple gas outlets. The pressure or gas flow rate inside the gas outlet and the non-gas outlet is not completely consistent, and the flame at the gas outlet is relatively long, or off-flame conditions occur under extremely harsh conditions, and combustion noise problems also occur.

[0004] In addition, the existing multi-outlet burner generally consists of multiple single pieces, and the process is relatively complex and the cost is relatively high. SUMMARY

[0005] The utility model aims at at least in a certain extent solve one of the problems existing in prior art related, and for this purpose, the utility model provides a kind of fire divider, its structure is simple, can solve the problem such as the pressure inconsistency in fire divider and the uneven flame at gas outlet.The utility model also provides a kind of burner.

[0006] According to the above-mentioned fire divider, the following technical solutions are used to achieve it:

[0007] A kind of fire divider, comprising: fire divider body, is equipped with the annular air chamber of upward opening, is equipped with gas inlet at the bottom of the fire divider body;Gas baffle is arranged in the annular air chamber and is located above the radial inner end of the gas inlet;And gas distribution plate, vertically arranged in the annular air chamber and part thereof is located at the top of the gas baffle, outer cavity is formed between the gas distribution plate and the outer cavity wall surface of the annular air chamber, inner cavity is formed between the gas baffle and the inner cavity wall surface of the annular air chamber, the inner cavity is communicated with the gas inlet by the outer cavity.

[0008] In some embodiments, a plurality of air vents are uniformly spaced along the length of the end of the gas distribution plate where the gas inlet flow rate is maximum, and the inner cavity and the outer cavity are communicated through the air vents;Or air flow channel is formed on the top of the gas distribution plate, and the air flow channel is arranged in a staggered manner with the position where the gas inlet flow rate is maximum, and the inner cavity and the outer cavity are communicated through the air flow channel.

[0009] In some embodiments, all of the air vents are arranged outside the baffle plate; or part of the air vents are arranged outside the baffle plate, and the other part of the air vents are arranged on the top of the baffle plate and away from the maximum air inlet flow rate of the air inlet.

[0010] In some embodiments, the air distribution plate comprises an air distribution section and a blocking section, the blocking section is arranged on the top of the baffle plate and directly above the maximum air inlet flow rate of the air inlet, the air distribution section is fixedly connected to one end of the blocking section away from the maximum air inlet flow rate of the air inlet, and a plurality of air vents are arranged on the air distribution section in a circumferential direction.

[0011] In some embodiments, the air distribution section is arranged outside the baffle plate, or one end of the air distribution section close to the baffle plate is arranged on the top of the baffle plate and away from the maximum air inlet flow rate of the air inlet.

[0012] In some embodiments, a connecting rib extending towards the inner cavity wall of the annular air cavity is arranged on each of the opposite ends of the air distribution plate, and the radially inner end of the connecting rib is gap-fitted or fixedly connected to the inner cavity wall of the annular air cavity.

[0013] In some embodiments, the annular air cavity is divided into the inner cavity and the outer cavity by the air distribution plate, and both the inner cavity and the outer cavity are annular; or the annular air cavity is divided into the inner cavity, the outer cavity and an arc-shaped cavity by the air distribution plate, the inner cavity and the outer cavity are arc-shaped, and the arc-shaped cavity is located on the outer side of the inner cavity in the circumferential direction and communicates with the outer cavity.

[0014] In some embodiments, the baffle plate comprises a horizontal baffle and two vertical baffles fixedly connected in an inverted "concave" shape, the horizontal baffle is arranged above the air inlet and its radially inner end is connected to the inner cavity wall of the annular air cavity, and the upper ends of the two vertical baffles are connected to the horizontal baffle.

[0015] In some embodiments, a groove with an upward opening is concavely arranged on the bottom surface of the outer cavity corresponding to the position of the air inlet, the groove is located on the radially outer side of the baffle plate and communicates with the radially outer end of the air inlet.

[0016] In some embodiments, the number of air inlets is at least two, and the baffle plate and the air distribution plate are arranged above each air inlet, and the adjacent air distribution plates are arranged in a spaced manner or fixedly connected.

[0017] According to the above-mentioned burner, the following technical solutions are adopted:

[0018] A burner comprising a pilot as described above, further comprising: a burner head arranged at the bottom of the pilot, and provided with an air outlet opening upward at a position corresponding to the air inlet, the air outlet being in communication with the outer cavity through the air inlet; and / or an outer fire cover arranged at the top of the pilot, and provided with a first group of fire holes at a position corresponding to the inner cavity, the first group of fire holes being in communication with the inner cavity of the pilot.

[0019] In some embodiments, a plurality of air passages are arranged on the air distribution plate of the pilot in uniform intervals along the length direction thereof, and the total air inlet area of all the air passages is not less than the total area of the fire holes of the first group of fire holes.

[0020] In some embodiments, the annular air cavity is divided by the air distribution plate into an inner cavity, an outer cavity and an arc cavity, the inner cavity is located radially inward of the outer cavity, the arc cavity is located outward of the inner cavity in the circumferential direction and is in communication with the outer cavity, and the second group of fire holes is arranged at a position of the outer fire cover corresponding to the arc cavity and is in communication with the arc cavity.

[0021] In some embodiments, the outer fire cover comprises a fire cover body and an inner gasket, the fire cover body is arranged at the top of the pilot and is mounted on the outer ring wall of the pilot at the radially outer end thereof and is mounted on the inner ring wall of the pilot at the radially inner end thereof through the inner gasket, and the first group of fire holes is arranged on the fire cover body or the inner gasket.

[0022] Compared with the prior art, the burner has at least the following beneficial effects:

[0023] The pilot of the present application has the following advantages: the air distribution plate and the air distribution plate are arranged in the annular air cavity of the pilot body, the air distribution plate is located above the air outlet, part of the air distribution plate is located on the top of the air distribution plate, the outer cavity is formed between the air distribution plate and the outer cavity wall of the annular air cavity, the inner cavity is formed between the air distribution plate and the inner cavity wall of the annular air cavity, the inner cavity and the outer cavity are in communication through the air inlet, the structure is simple, a certain pressure can be formed in the inner cavity, the mixed gas enters the inner cavity and flows uniformly to the outer fire cover of the burner, a stable flame is formed, the problem of inconsistent pressure in the existing burner, uneven flame at the air outlet or high flow rate and off-flame is solved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structure diagram of the pilot in the embodiment 1 of the present application Figure 1 ;

[0025] Figure 2 is a structure diagram of the pilot in the embodiment 1 of the present application Figure 2 ;

[0026] Figure 3 is the plan view of the igniter in the embodiment 1 of the utility model;

[0027] Figure 4 is Figure 3 the sectional view of A-A direction in the embodiment 1 of the utility model;

[0028] Figure 5 is Figure 3 the sectional view of B-B direction in the embodiment 1 of the utility model;

[0029] Figure 6 is the plan view of the igniter in the embodiment 2 of the utility model;

[0030] Figure 7 is the explosion view of the burner in the embodiment 3 of the utility model;

[0031] Figure 8 is the sectional view of the burner in the embodiment 3 of the utility model;

[0032] Figure 9 is the plan view of the igniter and outer fire cover in the embodiment 3 of the utility model.

[0033] In the drawing: 1-igniter, 11-igniter body, 111-air inlet, 112-outer cavity, 113-inner cavity, 114-arc cavity, 115-groove, 116-positioning column, 117-positioning hole, 12-air baffle, 121-horizontal baffle, 122-vertical baffle, 13-gas distribution plate, 131-gas distribution section, 1311-air vent, 132-blocking section, 133-connecting rib, 14-secondary air channel, 15-blocking part;

[0034] 2-furnace head, 21-gas outlet, 22-outer ejector pipe, 221-ejector pipe outlet;

[0035] 3-outer fire cover, 31-outer fire cover body, 311-fire groove, 32-inner gasket. DETAILED DESCRIPTION

[0036] The following embodiments are used to illustrate the utility model, but the utility model is not limited by these embodiments. The specific embodiment of the utility model is modified or the equivalent replacement of part technical features is carried out without departing from the spirit of the utility model scheme, and it should be covered in the technical scheme range of the utility model claimed.

[0037] Embodiment 1

[0038] Reference Figures 1-5The embodiment provides a burner, the burner 1 comprises a burner body 11, a gas baffle 12 and a gas distribution plate 13, wherein the gas baffle 12 and the gas distribution plate 13 are integrally formed with the burner body 11. The burner body 11 is provided with an annular air cavity (not shown in the figure) which is open upward, and the bottom of the burner body 11 is provided with an air inlet 111. The gas baffle 12 is arranged in the annular air cavity and located above the radial inner end of the air inlet 111. In the embodiment, the radial inner end of the gas baffle 12 is fixedly connected with the inner cavity wall surface of the annular air cavity, and the radial outer end is gap-fitted with the outer cavity wall surface of the annular air cavity to enable the mixed gas of fuel gas and air to pass through. Therefore, since the air inlet flow rate is the fastest at the position of the air inlet 111 close to the outer injection pipe of the furnace head, when the mixed gas of fuel gas and air flows upward from the air inlet 111 of the burner 1, the gas baffle 12 is encountered, the flow direction is changed, and the upward flow rate at the air inlet is slowed down, so that the stable pressure in the burner 1 is more easily formed, and the problems of uneven flame at the air outlet or off-flame caused by the fast flow rate are solved.

[0039] The gas distribution plate 13 is vertically arranged in the annular air cavity and part of the gas distribution plate 13 is located on the top of the gas baffle 12 and part of the gas distribution plate 13 is located on the cavity bottom surface of the annular air cavity. In the embodiment, part of the bottom of the gas distribution plate 13 is integrally formed with the top of the gas baffle 12, and the remaining part is integrally formed with the cavity bottom surface of the annular air cavity. An outer cavity 112 is formed between the gas distribution plate 13 and the outer cavity wall surface of the annular air cavity, and an inner cavity 113 is formed between the gas baffle 12 and the inner cavity wall surface of the annular air cavity. The inner cavity 113 is connected with the air inlet 111 through the outer cavity 112, and the inner cavity is configured to be connected with the fire hole of the outer fire cover. In the embodiment, the top of the gas distribution plate 13 is higher than the top of the burner body 11. Therefore, after the mixed gas flows upward from the air inlet 111 of the burner 1, the gas baffle 12 is first encountered to change the flow direction, then the mixed gas flows upward into the outer cavity 112, and finally the mixed gas flows into the inner cavity 113 to form a certain pressure in the inner cavity 113, and the mixed gas uniformly flows out from the inner cavity 113 to the corresponding fire hole of the outer fire cover to form a stable flame, thereby solving the problem of combustion noise caused by the inconsistent pressure in the existing burner.

[0040] Further, the connection mode of the inner cavity 113 and the outer cavity 112 includes but is not limited to any one of the following modes:

[0041] The first mode is shown in FIG. 1. Figures 1-5At one end of the air distribution plate 13 far from the air inlet 111 where the air flow rate is the largest, a plurality of air vents 1311 are arranged at uniform intervals along the length direction of the air distribution plate 13. The inner cavity 113 and the outer cavity 112 are connected through the air vents 1311. In this way, the mixed gas flows into the inner cavity 113 from the outer cavity 112 uniformly, so that the stable pressure is more easily formed in the inner cavity 113, and the flow rate of the mixed gas flowing into the inner cavity 113 is slowed down, which is beneficial to reduce the combustion noise. It is particularly pointed out that the air flow rate is the largest at the side of the air inlet 111 close to the outlet 221 of the injector of the furnace head 2, as shown in Figure 8 ; on the contrary, the air flow rate is the smallest at the side of the air inlet 111 far from the outlet 221 of the injector of the furnace head 2.

[0042] Secondly, an air flow channel is formed at the top of the air distribution plate 13, which is located between the air distribution plate 13 and the outer flame cover of the burner. The inner cavity 113 and the outer cavity 112 are connected through the air flow channel located above the air distribution plate 13, so that the mixed gas in the outer cavity 112 can flow into the inner cavity 113 across the air distribution plate 13. It is particularly pointed out that the air flow channel is arranged in a staggered manner with the air flow rate maximum position of the air inlet 111, so that the air flow channel avoids the air flow rate maximum position of the air inlet 111, and the stable pressure is more easily formed in the inner cavity 113.

[0043] Thirdly, the difference from the first kind is that an air duct is arranged between the adjacent air vents 1131, so that the adjacent air vents 1131 can be connected through the air duct. The radially inner end of the air duct is connected with the inner cavity, and the radially outer end of the air duct is connected with or not connected with the outer cavity.

[0044] Further, all the air vents 1311 can be arranged outside the air inlet 111 and the air distribution plate 12, so that the air vents 1311 completely avoid the air inlet 111, that is, the air inlet of the inner cavity 113 completely avoids the air inlet 111. This arrangement is suitable for the air inlet 111 with a relatively short length in the circumferential direction, such as the right air inlet in Figure 3 or Figure 8 . Of course, part of the air vents 1311 can be arranged outside the air inlet 111 and the air distribution plate 12, and the other part of the air vents 1311 can be arranged at the top of the air distribution plate 12 and far from the air flow rate maximum position of the air inlet 111. This arrangement is suitable for the air inlet 111 with a relatively long length in the circumferential direction, such as the left air inlet in Figure 3 or Figure 8 . In this way, the air inlet of the inner cavity 113 avoids the air flow rate maximum position of the air inlet 111, and it is also beneficial to ensure that the inner cavity 113 has a large enough air inlet.

[0045] Reference is made to Figures 1-5In the embodiment, the gas distribution plate 13 comprises a gas distribution section 131 and a blocking section 132. The blocking section 132 is arranged on the top of the gas blocking plate 12 and directly above the position of the maximum air flow rate of the air inlet 111. The gas distribution section 131 is fixedly connected to one end of the blocking section 132 away from the position of the maximum air flow rate of the air inlet 111. A plurality of air passages 1311 are arranged on the gas distribution section 131 at uniform intervals along the length direction of the gas distribution section 131. Thus, after the mixed gas flows into the outer cavity 112 from the air inlet 111, the mixed gas cannot flow into the inner cavity 113 from the position of the maximum air flow rate of the air inlet 111 directly opposite to the outer cavity 112, but can only flow into the inner cavity 113 from the gas distribution section 131 uniformly, so as to make the pressure consistency and stability in the inner cavity 113, ensure the relatively stable flow rate from the inner cavity to the fire hole of the outer fire cover, form a more stable flame, and solve the problem of combustion noise of the burner.

[0046] Further, according to the length of the air inlet 111 and the corresponding gas blocking plate 12 in the circumferential direction, the relative position of the gas distribution section 131 and the gas blocking plate 12 can be adjusted adaptively. When the length of the air inlet 111 and the corresponding gas blocking plate 12 in the circumferential direction is short, the gas distribution section 131 can be arranged outside the gas blocking plate 12. Conversely, when the length of the air inlet 111 and the corresponding gas blocking plate 12 in the circumferential direction is long, one end of the gas distribution section 131 close to the gas distribution plate 13 can be arranged vertically on the top of the gas distribution plate 13 and away from the position of the maximum air flow rate of the air inlet 111, and the other end can be arranged vertically on the top of the bottom surface of the outer annular air cavity. In addition, the end of the blocking section 132 away from the gas distribution section 131 can extend outward along the length direction of the blocking section 132 to the side of the gas blocking plate 12 away from the gas distribution section 131, so as to lengthen the length of the blocking section 132, facilitate the processing and manufacturing, and be beneficial to lengthening the length of the inner cavity 113.

[0047] In the embodiment, the connecting ribs 133 extending towards the inner cavity wall surface of the annular air cavity are arranged at the opposite ends of the gas distribution plate 13. The radially inner end of the connecting rib 133 is gap-fitted or fixedly connected to the inner cavity wall surface of the annular air cavity. Thus, it is beneficial to strengthen the overall strength of the gas distribution plate 13 and seal the end of the inner cavity 113 in the circumferential direction. Of course, an opening or gap for air flow can also be formed on the connecting rib 133 or on the top of the connecting rib 133.

[0048] Reference Figures 1-5In the embodiment, the arc length of the gas distribution plate 13 is less than 1 / 2 of the circumference of the outer annular air cavity, the annular air cavity is divided into the inner cavity 113, the outer cavity 112 and the arc cavity 114 by the gas distribution plate 13, the inner cavity 113 and the outer cavity 112 are arc-shaped, the arc cavity 114 is located at the outer side of the inner cavity 113 in the circumferential direction and communicates with the outer cavity 112, and it is particularly pointed out that the arc cavity 114 communicates with or does not communicate with the inner cavity 113. Thus, by dividing the cavity at the position close to the air inlet 111 of the inner annular air cavity, the divided cavity and the arc cavity 114 are arranged at the air inlet end and the air outlet end in the air flow direction (for example, the clockwise direction in the embodiment) of the inner annular air cavity, which is beneficial to reduce the flow rate at the position and solve the problems of uneven flame at the air outlet or off-flame caused by relatively high flow rate; since the flow rate at the air outlet end in the air flow direction of the inner annular air cavity is relatively low, the cavity can not be continuously divided, so as to simplify the structure and reduce the processing difficulty, at this time, the consistency of the flow rate or pressure of the arc cavity 114 and the inner cavity 113 is high, so that the flow rate of the flow to the flame hole of the outer flame cover of the flame arrester 1 is relatively uniform and stable, and the flame of the outer flame cover is more uniform and stable.

[0049] Reference Figures 1-5 In the embodiment, the gas baffle 12 includes a horizontal baffle 121 and two vertical baffles 122 which are fixedly connected in the shape of an inverted “concave” character, the horizontal baffle 121 is arranged above the air inlet 111 and the radially inner end thereof is connected with the inner cavity wall surface of the annular air cavity, the radially outer side of the top of the horizontal baffle 121 is fixedly connected with the gas distribution plate 13 and both of them jointly enclose an “L” shape. The two vertical baffles 122 are respectively arranged at the opposite two outer sides in the circumferential direction of the air inlet 111 and the upper ends thereof are connected with the horizontal baffle 121.

[0050] Further, a recess 115 which is open upward is concavely arranged at the position of the cavity bottom surface of the outer cavity 112 corresponding to the air inlet 111, the recess 115 is located at the radially outer side of the gas baffle 12 and communicates with the radially outer end of the air inlet 111, at this time, the air inlet 111 communicates with the outer cavity 112 through the recess 115, so that the recess 115 can play a certain role in reducing the flow rate of the air flow out of the air inlet 111,

[0051] Further, the number of the air inlets 111 is at least two to increase the unit air inlet area of the distributor 1. The air baffle 12 and the gas distribution plate 13 are arranged above each air inlet 111. The adjacent gas distribution plates 13 are arranged at intervals or fixedly connected. The adjacent outer cavities are connected, and the adjacent inner cavities are connected. Of course, the adjacent inner cavities can not be connected. In the embodiment, the number of the air inlets 111 is two. The two air inlets 111 are arranged at intervals along the circumferential direction of the bottom of the distributor body 11. One of the air inlets 111 is a small air inlet, and the other is a large air inlet. The lower ends of the two air inlets 111 extend downward below the bottom of the distributor body 11 to form a secondary air passage 14 between the two air inlets 111 for the secondary air to pass through. The adjacent gas distribution plates 13 are integrally formed. It is particularly pointed out that in other embodiments, the number of the air inlets 111 can be designed to be one and only one.

[0052] A positioning column 116 integrally formed at the bottom of the distributor body 11 extends downward. A positioning hole 117 opening downward is formed in the positioning column 116. A positioning hole 117 is also formed in the outer edge of the bottom of one of the air inlets 111 (for example, the large air inlet in the embodiment). The distributor is quickly and reliably positioned on the burner end by the cooperation of the positioning column 116 and the positioning hole at the large air inlet.

[0053] Embodiment 2

[0054] Reference Figure 6 The difference between the embodiment and the embodiment 1 is that the gas distribution plate 13 is generally annular in structure. The annular gas cavity of the distributor body 11 is divided into an inner cavity 113 and an outer cavity 112 by the gas distribution plate 13. At this time, the inner cavity 113 and the outer cavity 112 are both annular. The inner cavity 113 is configured to be connected to the fire hole on the outer fire cover, and the outer cavity 112 can only be connected to the fire hole on the outer fire cover through the inner cavity. The rest is the same as the embodiment 1.

[0055] Embodiment 3

[0056] Reference Figures 7-9The embodiment provides a burner, which comprises a burner distributor as described in embodiment 1 or 2, and further comprises a burner head 2 and / or an outer fire cover 3. The burner head 2 is arranged at the bottom of the burner distributor 1, and an air outlet 21 opening upwards is arranged at the position of the burner head 2 corresponding to the air inlet 111, the air outlet 21 is inserted into the air inlet 111 and is in communication with the outer cavity 112 through the air inlet 111. The outer fire cover 3 is arranged at the top of the burner distributor 1, and a first group of fire holes is arranged at the position of the inner side wall or the inner top of the outer fire cover 3 corresponding to the inner cavity 113, the first group of fire holes is in communication with the inner cavity 113 of the burner distributor, and in the embodiment, the first group of fire holes is composed of a plurality of fire grooves 311 arranged along the circumferential direction of the outer fire cover 3 and arranged on the inner side wall of the outer fire cover 3. The upper end of the gas distribution plate 13 extends into the outer fire cover 3 and abuts or gap fits with the outer fire cover 3.

[0057] It can be seen that the first group of fire holes is supplied with air through the inner cavity 113 of the burner distributor 1, so that the first group of fire holes avoids the air inlet 111 of the burner distributor 1, ensures the consistency of pressure and flow rate between the inner cavity 111 and the outer fire cover 3, solves the problem of off-flame caused by uneven flame or fast flow rate at the air outlet, and at the same time, relatively stable flow rate at the first group of fire holes is achieved, the flame is more stable, and the problem of combustion noise of the burner is solved.

[0058] Reference Figures 7-8 In the embodiment, the burner distributor 1 is provided with two air inlets 111, wherein the right air inlet 111 is a small air inlet, and the left air inlet 111 is a large air inlet. Correspondingly, the burner head 2 is provided with two air outlets 21 and an outer ejector pipe 22, the outer ejector pipe 22 is arranged transversely below the two air outlets 21, an ejector pipe outlet 221 is arranged at the position of the outer ejector pipe 22 corresponding to the air outlet 21, the outer ejector pipe 22 is in communication with the corresponding air inlet 111 of the burner distributor 1 through the ejector pipe outlet 221 and the corresponding air outlet 21 in sequence, so that the number of parts of the burner head is reduced, different air outlets of the burner head are combined, only the air outlet at the ejector pipe is reserved, the core can be directly drawn and the mold can be directly pulled, the manufacturing process is simplified, and the cost is reduced. In addition, a premixing cavity 23 is arranged at the position of the burner head 2 corresponding to the end of the outer ejector pipe 22, and the ejector pipe outlet 221 at the end of the outer ejector pipe 22 is in communication with the corresponding air outlet 21 through the premixing cavity 23 in sequence. Figure 8 Since the small air inlet of the burner distributor 1 is just located directly above the right ejector pipe outlet 221 of the burner head 2, the maximum air inlet flow rate is at any position of the small air inlet (i.e. the right air inlet 111); since the end of the large air inlet (i.e. the left air inlet 111) close to the small air inlet of the burner distributor 1 is just located directly above the left ejector pipe outlet 221 of the burner head 2, the maximum air inlet flow rate is at the end of the large air inlet close to the end of the outer ejector pipe 22, and the minimum air inlet flow rate is at the other end.

[0059] ReferenceFigures 7-9 In the embodiment, a plurality of air passages 1311 are arranged on the gas distribution plate 13 of the distributor 1 at uniform intervals along the length direction of the gas distribution plate 13, and the total area of the air passages 1311 is not less than the total area of the first group of fire holes, so that the air passages 1311 on the gas distribution plate 13 only play a role of slowing down the airflow, and do not cause flow interception.

[0060] In the embodiment, the annular cavity of the distributor body 11 is divided into an inner cavity 113, an outer cavity 112 and an arc-shaped cavity 114 by the gas distribution plate 13. The inner cavity 113 and the outer cavity 112 are both arc-shaped, the inner cavity 113 is located on the radial inner side of the outer cavity, and the arc-shaped cavity 114 is located on the outer side of the inner cavity 113 in the circumferential direction and is in communication with the outer cavity 112. The second group of fire holes is arranged at a position corresponding to the arc-shaped cavity 114 on the inner side wall or the top of the outer fire cap 3, and is in communication with the arc-shaped cavity 114. In the embodiment, the second group of fire holes is composed of a plurality of fire grooves 311 arranged at intervals in the circumferential direction, and the second group of fire holes is arranged in a staggered manner with the inner cavity 113 and forms a ring-shaped structure together with the first group of fire holes.

[0061] Reference Figures 7-9 In the embodiment, the outer fire cap 3 includes a cap body 31 and an inner gasket 32. The cap body 31 is arranged on the top of the distributor 1 and is mounted on the outer ring wall of the distributor 1 at the radial outer end thereof, and is mounted on the inner ring wall of the distributor 1 at the radial inner end thereof through the inner gasket 32. The first group of fire holes and the second group of fire holes are both arranged on the inner side wall of the cap body 31. Of course, the first group of fire holes and the second group of fire holes can be changed to be arranged on the inner gasket 32. The upper end of the gas distribution plate 13 extends into the outer fire cap 3 and abuts against or is in clearance fit with the cap body 31. In other embodiments, the inner gasket 32 can be omitted, and in this case, the radial inner end of the cap body 31 is directly mounted on the inner ring wall of the distributor 1.

[0062] The above only describes some embodiments of the present application. Those skilled in the art can make some modifications and improvements without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A distributor, characterized in that The application relates to a distributor body (11) provided with an annular air cavity with an upward opening, an air inlet (111) arranged at the bottom of the distributor body (11), a baffle plate (12) arranged in the annular air cavity and located above the radially inner end of the air inlet (111), and a gas distribution plate (13) arranged vertically in the annular air cavity and partially located on the top of the baffle plate (12), wherein an outer cavity (112) is formed between the gas distribution plate (13) and the outer cavity wall surface of the annular air cavity, an inner cavity (113) is formed between the baffle plate (12) and the inner cavity wall surface of the annular air cavity, and the inner cavity (113) is connected with the air inlet (111) through the outer cavity (112). A plurality of air vents (1311) are uniformly arranged on one end of the gas distribution plate (13) far from the air inlet (111) where the air flow rate is the largest, the inner cavity (113) is connected with the outer cavity (112) through the air vents (1311), or An air flow channel is formed on the top of the gas distribution plate (13), the air flow channel is arranged in a staggered mode with the air inlet (111) where the air flow rate is the largest, and the inner cavity (113) is connected with the outer cavity (112) through the air flow channel. All the air vents (1311) are arranged outside the baffle plate (12), or part of the air vents (1311) are arranged outside the baffle plate (12), and the other part of the air vents (1311) are arranged on the top of the baffle plate (12) and far from the air inlet (111) where the air flow rate is the largest. The gas distribution plate (13) comprises a gas distribution section (131) and a blocking section (132), the blocking section (132) is arranged on the top of the baffle plate (12) and located directly above the air inlet (111) where the air flow rate is the largest, the blocking section (132) is fixedly connected with the gas distribution section (131) on one end thereof far from the air inlet (111) where the air flow rate is the largest, and a plurality of air vents (1311) are arranged on the gas distribution section (131) in a circumferential direction.

2. A distributor according to claim 1, characterised in that The gas distribution section (131) is arranged outside the baffle plate (12), or one end of the gas distribution section (131) close to the gas distribution plate (13) is arranged on the top of the gas distribution plate (13) and far from the air inlet (111) where the air flow rate is the largest. Connecting ribs (133) are arranged on opposite ends of the gas distribution plate (13) and extend towards the inner cavity wall surface of the annular air cavity, the radially inner end of the connecting rib (133) is in gap cooperation or fixed connection with the inner cavity wall surface of the annular air cavity.

3. A distributor according to claim 2, wherein The annular air cavity is divided into the inner cavity (113) and the outer cavity (112) by the gas distribution plate (13), and the inner cavity (113) and the outer cavity (112) are both annular.

4. A distributor according to claim 2, wherein ​ 5. A distributor according to claim 4, wherein ​ 6. A distributor according to claim 1, wherein ​ 7. A spark distributor according to any one of claims 1-6, characterised in that ​ The annular air cavity is divided into the inner cavity (113), the outer cavity (112) and the arc cavity (114) by the gas distribution plate (13), the inner cavity (113) and the outer cavity (112) are arc-shaped, the arc cavity (114) is located on the outer side of the inner cavity (113) in the circumferential direction and communicates with the outer cavity (112).

8. A distributor according to claim 1, wherein The air baffle (12) includes a horizontal baffle (121) and two vertical baffles (122) which are fixedly connected in an inverted "concave" shape, the horizontal baffle (121) is arranged above the air inlet (111) and the radially inner end thereof is connected with the inner cavity wall surface of the annular air cavity, and the two vertical baffles (122) are respectively arranged on the opposite outer sides of the air inlet (111) in the circumferential direction and the upper ends thereof are connected with the horizontal baffle (121).

9. A distributor according to claim 1, wherein A recess (115) with an upward opening is concavely arranged at the position of the outer cavity (112) bottom surface corresponding to the air inlet (111), the recess (115) is located on the radially outer side of the air baffle (12) and communicates with the radially outer end of the air inlet (111).

10. A spark distributor according to any one of claims 1-6 or any one of claims 8-9, characterized in that The number of the air inlets (111) is at least two, the air baffle (12) and the gas distribution plate (13) are arranged above each air inlet (111), and the adjacent gas distribution plates (13) are arranged at intervals or fixedly connected.

11. A burner characterized by, The burner further comprises: a furnace head (2) arranged at the bottom of the gas distributor, an air outlet (21) with an upward opening is arranged at the position of the furnace head (2) corresponding to the air inlet (111), the air outlet (21) communicates with the outer cavity (112) through the air inlet (111); and / or an outer fire cover (3) arranged on the top of the gas distributor, a first fire hole group is arranged at the position of the outer fire cover (3) corresponding to the inner cavity (113), and the first fire hole group communicates with the inner cavity (113) of the gas distributor.

12. A burner as claimed in claim 11, characterised in that A plurality of air vents (1311) are arranged on the gas distribution plate (13) of the gas distributor at intervals along the length direction thereof, and the total air inlet area of all the air vents (1311) is not less than the total area of the fire holes of the first fire hole group.

13. A burner as claimed in claim 12, characterised in that The annular air cavity is divided into the inner cavity (113), the outer cavity (112) and the arc cavity (114) by the gas distribution plate (13), the inner cavity (113) is located on the radially inner side of the outer cavity (112), the arc cavity (114) is located on the outer side of the inner cavity (113) in the circumferential direction and communicates with the outer cavity (112), and a second fire hole group is arranged on the outer fire cover (3) corresponding to the arc cavity (114), and the second fire hole group communicates with the arc cavity (114).

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