CN117948597A - Distributor and burner - Google Patents

Abstract

The invention provides a distributor and a burner. The distributor at least comprises a first ring supporting part and a second ring supporting part, an air inlet channel is formed between the first ring supporting part and the second ring supporting part, a partition piece is arranged in the air inlet channel, the air inlet channel is partitioned into a first channel and a second channel by the partition piece, and the first channel is closer to the first ring supporting part than the second channel. On the one hand, the double air inlet channel can be formed between the first ring supporting part and the second ring supporting part based on the arrangement of the partition piece, so that air can be supplemented for different parts of the inner ring flame of the burner, and the combustion efficiency is improved; on the other hand, the heat exchange between the excessive air and the high-temperature flue gas is effectively avoided, the downward radiation of the heat of the high-temperature flue gas of the inner ring flame is effectively blocked, the attenuation of the heat load is reduced, and therefore the heat efficiency is effectively improved.

Description

Distributor and burner

Technical Field

The invention relates to the technical field of combustors, in particular to a distributor and a combustor.

Background

With the improvement of life quality, the requirements of people on the kitchen ranges are also increasing. The burner is an important component of a kitchen range and generally comprises an outer ring fire cover, a central fire cover and a distributor. The distributor is provided with an outer annular seat and an inner annular seat, a central fire cover is arranged on the inner annular seat, and an outer annular fire cover is arranged on the outer annular seat. An air inlet channel is directly formed between the outer wall of the inner annular seat and the inner wall of the outer annular seat, and is used for providing secondary air required in the combustion process for the central fire cover.

But because the air inlet channel is directly formed between the outer wall of the inner annular seat and the inner wall of the outer annular seat, the secondary air quantity supplied to the central fire cover through the air inlet channel is far greater than the secondary air quantity required to be consumed in the combustion process of the central fire cover, and because of the arrangement of the air inlet channel, heat generated in the combustion process is diffused and lost downwards, so that the heat efficiency of the central fire cover is lower, the overall combustion efficiency of the combustor is lower, the energy is wasted, and the requirements of people cannot be met.

Disclosure of Invention

In order to at least partially solve the problems with the prior art, according to one aspect of the present invention, a flame divider is provided. The distributor at least comprises a first ring supporting part and a second ring supporting part, an air inlet channel is formed between the first ring supporting part and the second ring supporting part, a partition piece is arranged in the air inlet channel, the air inlet channel is partitioned into a first channel and a second channel by the partition piece, and the first channel is closer to the first ring supporting part than the second channel.

According to the distributor, on the one hand, the double air inlet channels can be formed between the first ring supporting part and the second ring supporting part based on the arrangement of the partition pieces, so that air can be supplemented for different parts of the inner ring flame of the burner, and the combustion efficiency is improved; on the other hand, the heat exchange between the excessive air and the high-temperature flue gas is effectively avoided, the downward radiation of the heat of the high-temperature flue gas of the inner ring flame is effectively blocked, the attenuation of the heat load is reduced, and therefore the heat efficiency is effectively improved.

Illustratively, the first ring support has an outer sidewall, the divider has an inner sidewall, the first channel is formed between the outer sidewall and the inner sidewall, and the outer sidewall extends in a vertical direction. So, the air that gets into first passageway is along vertical direction upward outflow, and the air that flows can contact the root of inner ring flame rapidly, can carry out the air make-up to the root of inner ring flame, makes the burning more abundant to can further improve combustion efficiency.

Illustratively, the first passageway defines a first air-out direction and the second passageway defines a second air-out direction that is inclined relative to the first air-out direction. Therefore, under the condition that the first channel can supplement air for the root of the flame of the inner ring of the burner, the second channel can supplement air for the outer part of the flame of the inner ring of the burner, so that the flame burns more fully, and the temperature of the flame is improved.

Illustratively, a first gap is provided between the divider and the first ring support, the first gap forming a first passage, the first passage defining a first air-out direction; a second gap is formed between the spacer and the second ring support, the second gap forming a second channel. The arrangement ensures that the first channel is closer to the first ring supporting part than the second channel, so as to realize the aim of supplementing air to different parts of the flame of the inner ring of the burner; and the structure is simple.

The first ring support has a first ring top surface, the spacer has a first end and a second end, the first end is closer to the first ring top surface than the second end, the first gap decreases to constant from the second end to the first end, and the second gap increases to constant. Therefore, based on gradual change of the first gap value, the first gap can guide air entering the first channel, gather the air to the outlet of the first channel, enable the air to flow out along the extending direction of the part with unchanged size on the first gap, and can reshape the air to flow out to play a role in stabilizing flow; furthermore, because the root area of the flame is shorter, the arrangement of the first gap reduction also facilitates more accurate alignment of the root of the flame, further avoiding the phenomena of flame root flame separation and fire extinction. Based on gradual change of the second gap, the second gap can guide air entering the second channel, so that the air can be better diffused to the outlet of the second channel, flows out along the extending direction of the part with unchanged size on the second gap, and can reshape the air to be discharged, thereby playing a role in stabilizing flow; in addition, because the outer flame part is longer, the arrangement of the second gap increase is convenient to be matched to the outer flame part, and the heat efficiency is further improved.

Illustratively, the divider includes a first segment extending parallel to the first direction of air egress from an end of the second end proximate the top surface of the first ring to the first end, and a second segment extending from the second end to connect with the first segment. The structure of the separating piece is simple, and the first gap gradual change and the second gap gradual change are easy to realize; moreover, the same first gap value can be achieved between the first segment and the first ring support everywhere, and the first segment and the first ring support form the outlet of the first channel therebetween. The second gap may be gradually increased at an inlet of the second channel formed between the second segment and the second ring support. In addition, the same second gap value can be achieved between everywhere of the first segment and the second ring support.

Illustratively, the second segment extends from the second end to join the first segment along a circular arc-shaped surface having an arc of between 30 ° and 60 °. For example, the arc value may be 30 °, 35 °,40 °, 45 °,50 °, 55 °,60 °, or other values therebetween. So set up, be the second section of convex face structure to the direction effect of the air of entering first passageway and entering second passageway is better. When the outer diameter of the distributor is a fixed value, if the radian of the arc-shaped surface is smaller than 30 degrees, the second section is too short, so that the guiding path of the formed second channel is too short, the air entering the second channel cannot be well diffused into a range equivalent to the length of the outer flame, and the outer flame is easy to impact, so that the outer flame is unstable. If the arc of the circular arc surface is greater than 60 degrees, the second section is too long, and the guide path of the formed second passage is too long, resulting in a reduction in the speed of the secondary air supplement. The radian range of the arc-shaped surface is 30-60 degrees, so that the second section is smaller than 1/4 of the circle where the arc-shaped surface is located, the guide effect is quicker and better, and the outer flame can be ensured to be more stable.

Illustratively, the second segment extends from the second end along a bevel to connect with the first segment, the bevel and the first segment having an included angle therebetween ranging from 10 ° to 60 °. For example, the included angle value may be 10 °,15 °,20 °,25 °,30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, or other values therebetween. So set up, the structure of separator is simpler, also easier manufacturing. When the overall height of the distributor is a fixed value, if the included angle is smaller than 10 degrees, the second section is too short, so that the guiding paths of the first channel and the second channel are too short, air entering the second channel cannot be well diffused into a range equivalent to the outer flame length, moreover, the inlet of the first channel is too narrow, the air is difficult to enter the first channel, the guiding effect is poor, and sufficient secondary air cannot be provided. If the included angle is greater than 60 °, the entrance of the second passage is too narrow and air is more difficult to enter the second passage. The inclined plane and the first section are arranged in an included angle range of 10-60 degrees, so that air can easily enter the first channel and the second channel, and the second section can achieve a good guiding effect on the air entering the first channel and the air entering the second channel.

The second ring support portion includes a first ring wall, a second ring wall and an outer ring bottom wall, the first ring wall surrounds the second ring wall, the first ring wall is connected to the second ring wall through the outer ring bottom wall, the first ring wall, the second ring wall and the outer ring bottom wall surround to form an outer ring fire division chamber, and the second end is lower than the outer ring bottom wall along a direction parallel to the first air outlet direction. The distributor is simpler to process and manufacture, and the processing technology is easy to realize; moreover, air is facilitated to enter the second channel; moreover, when the overall height of the distributor is a fixed value, the second end is lower than the outer ring bottom wall and is higher than the outer ring bottom wall, the partition piece can have a longer guide path to meet the guide requirement, and the height of the second annular wall can be reduced, so that the height of the second annular supporting part is reduced, the overall height of the distributor is reduced visually, and the experience of a user is improved.

The second ring support portion further includes an extending bottom wall extending from the outer ring bottom wall to form a recess portion on the outer ring fire dividing chamber, an outer ring injection pipe is provided at a bottom of the partition, the outer ring injection pipe is communicated to the recess portion, and an area of a cross section of the recess portion gradually increases from a bottom of the recess portion to the outer ring bottom wall. So set up, the depressed part can play the guide effect to the mixed gas of air and gas, makes it distribute to whole outer loop fire dividing room by the both sides diffusion of depressed part fast, has accelerated the distributor to the distribution speed of mixed gas.

Illustratively, the bottom of the divider is further provided with an inner ring ejector tube, the inner ring ejector tube and the outer ring ejector tube intersecting perpendicularly to divide the bottom of the divider into a plurality of regions. The air inlets of the inner ring injection pipes and the air inlets of the outer ring injection pipes are positioned in different directions, so that primary air to be sucked into the two injection pipes does not interfere with each other; in addition, the multiple areas are favorable for installing parts needing to be arranged in the dividing areas, and the structure of the distributor is optimized.

The first through hole and the second through hole are formed in the partition, a first guide column is formed at the outer edge of the first through hole along the direction far away from the top surface of the first ring, a second guide column is formed at the outer edge of the second through hole along the direction far away from the top surface of the first ring, and the first through hole and the second through hole are respectively located in different areas. So set up, first part can insert to first through-hole, and first guide post is to realizing direction and radial direction's spacing. The second part can be inserted into the second through hole and guided and positioned in the radial direction by the second guide post. The first guide post may facilitate the spacing of the first part mounted to the first through hole.

Illustratively, the inner side of the second annular wall is formed on a circle of diameter D1, and the outer edge of the second end is formed on a circle of diameter D2, D1 > D2. The distributor is simpler to process and manufacture; moreover, the inlet of the second channel is smoother, the overall radial size of the distributor can be reduced, and the consumption of consumable materials is reduced.

Illustratively, the first gap has a minimum value d1, d1 being 1mm to 6mm. For example, d1 may be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, or other values in between. Typically, the heat load supplied by the center fire cover is 0.2KW to 1.2KW. The first channel can supplement the most proper secondary air quantity for the flame root of the central fire cover, and the secondary air quantity supplemented by the distributor through the first channel can be matched with and suitable for the central fire cover of the conventional specification, so that the universality of the distributor is improved.

Illustratively, the second gap has a minimum value d2, d2 being 4mm to 9mm. For example, d2 may be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or other values in between. The secondary air quantity of the distributor, which is supplemented by the second channel, can be matched with and suitable for the central fire cover of the conventional specification, so that the universality of the distributor is improved.

According to another aspect of the present invention, a burner is provided. The burner comprises an outer ring fire cover and a central fire cover, and further comprises the distributor of any one of the above, wherein the outer ring fire cover is supported on the second ring support part, and the central fire cover is supported on the first ring support part. Because the distributor has the technical effects described above, the burner including the distributor also has the technical effects described above. The burner can supplement air for different parts of the flame of the central flame cover, so that the combustion efficiency is improved; moreover, the replenishment of the center fire cover with excess secondary air can be avoided. In addition, the separation piece can gather the combustion heat of the inner ring flame above the separation piece, so that the heat of high-temperature smoke of the inner ring flame is effectively prevented from radiating downwards, the phenomenon of thermal expansion of nozzles and other structures below the distributor is avoided, the attenuation of heat load is reduced, and the heat efficiency is effectively improved; but also prolongs the service life of the burner.

Illustratively, the central fire cover has a fire outlet thereon, and the first passage has an air outlet that is no higher than the fire outlet. By the arrangement, after the air flows out through the air outlet, the air can be supplemented to the flame root, and the effect of supplementing secondary air to the inner ring flame root is better.

Illustratively, the outer annular fire cover has an inner annular wall provided with an auxiliary air outlet in communication with the second passage. The distributor can supplement secondary air for the outer ring fire cover, the secondary air can be supplemented for the central fire cover, the secondary air can be supplemented for the outer ring fire cover, and the heat efficiency of the combustor is improved. Even if the inner ring fire hole of the center fire cover is blocked, the secondary air used for supplementing the center fire cover can also supplement the auxiliary air outlet hole of the outer ring fire cover, so that a large amount of smoke is prevented from being formed due to insufficient combustion, and the performance of the burner is improved.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification. Embodiments of the present invention and their description are shown in the drawings to explain the principles of the invention. In the drawings of which there are shown,

FIG. 1 is a perspective view of an distributor according to an exemplary embodiment of the present invention;

FIG. 2 is another angular perspective view of the distributor shown in FIG. 1;

FIG. 3 is a perspective view of a burner according to an exemplary embodiment of the present invention;

FIG. 4 is a cross-sectional view of A-A of the combustor shown in FIG. 3 and a flow diagram of secondary make-up air;

FIG. 5 is another perspective view of the burner shown in FIG. 3;

FIG. 6 is an exploded view of the burner shown in FIG. 3;

FIG. 7 is a front view of the burner shown in FIG. 3;

FIG. 8 is a top view of the combustor shown in FIG. 7;

FIG. 9 is a B-B cross-sectional view of the burner shown in FIG. 8 and a gas flow diagram of the outer ring eductor;

FIG. 10 is a C-C cross-sectional view of the burner shown in FIG. 8 and a gas flow diagram of the inner ring jet tube;

FIG. 11 is a D-D sectional view of the burner shown in FIG. 8;

FIG. 12 is another angular perspective view of the outer ring fire cover shown in FIG. 6; and

Fig. 13 is another angular perspective view of the inner ring fire cover shown in fig. 6.

Wherein the above figures include the following reference numerals:

1. A burner; 10. a fire divider; 110. a first ring support; 1101. an inner ring fire dividing chamber; 1110. a third annular wall; 1111. a first ring top surface; 1112. an outer sidewall; 1120. an inner ring bottom wall; 101. an air inlet channel; 1011. a first channel; 1011a, an air outlet; 1012. a second channel; 120. a second ring support; 1210. a first annular wall; 1220. a second annular wall; 1230. an outer ring bottom wall; 1240. an extended bottom wall; 1241. a recessed portion; 1201. an outer ring fire dividing chamber; 130. a partition; 1301. a first end; 1302. a second end; 1303. a first through hole; 1304. a second through hole; 1310. a first section; 1311. an inner sidewall; 1320. a second section; 1330. a first guide post; 1340. a second guide post; 140. an outer ring injection pipe; 150. an inner ring injection pipe; 20. an outer ring fire cover; 21. an inner annular wall; 22. an outer annular wall; 201. an outer ring air outlet hole; 202. an outer ring air outlet channel; 30. a center fire cover; 301. an inner ring fire hole; 302. an inner ring air outlet channel; 303. and a fire outlet.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the invention by way of example only and that the invention may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the invention.

The distributor according to the invention is mainly applied to burners. In one embodiment of the invention, the burner may include a distributor, an outer ring fire cover, and a center fire cover, wherein the outer ring fire cover and the center fire cover are supported on the distributor. The distributor will be described in detail below.

Referring to fig. 1 and 6 in combination, the distributor 10 of the present invention may include at least a first ring support 110 and a second ring support 120. The outer ring fire cover 20 may be supported on the second ring support 120. The center fire cover 30 may be supported on the first ring support 110. An air inlet passage 101 is formed between the first ring support 110 and the second ring support 120. In an embodiment not shown, the distributor 10 of the present invention may further comprise a third ring support portion, which may be disposed between the first ring support portion 110 and the second ring support portion 120, such that the distributor 10 may have two air inlet channels 101. Regardless of the fact that the distributor 10 comprises several support parts, secondary air can enter the distributor 10 via the air inlet channel 101. A partition 130 may be provided in the air intake passage 101. The partition 130 divides the intake passage 101 into a first passage 1011 and a second passage 1012. The first channel 1011 is closer to the first ring support 110 than the second channel 1012. The structure of the partition 130 may be various, for example, may be a generally flat plate, a curved plate, or other shaped structure as long as it is sufficient to partition the air intake passage 101 into the first passage 1011 and the second passage 1012.

The partitions 130 of different structures may form the first and second channels 1011 and 1012 of different shapes. In one embodiment of the invention, the first channel 1011 may be a plurality of channels that are discretely distributed. The plurality of channels may have different shapes. For ease of fabrication and manufacture, the plurality of channels may also be fabricated in the same shape and size, the plurality of channels may be arranged in an annular array, and the cross-sectional dimensions of the individual channels may vary throughout. Other regular arrangements of the plurality of channels are possible.

In one embodiment, not shown, the first channel 1011 may be one channel.

Similarly, the second channel 1012 may also have the features described above.

In one embodiment of the invention, the first channel 1011 may comprise a plurality of channels distributed discretely, the plurality of channels being arranged in an annular array; the second channel 1012 may also comprise a further plurality of channels in a discrete distribution, which are also arranged in an annular array, the number of the plurality of channels being the same as the number of the further plurality of channels, e.g. the first channel 1011 comprises 4 sub-channels, the second channel 1012 may comprise a further 4 sub-channels, and the same radial direction of the distributor 10 may have one sub-channel of the first channel 1011 and another sub-channel of the second channel 1012.

In another embodiment of the invention, the sub-channels in the first channel 1011 and the further sub-channels in the second channel 1012 are each located in different radial directions of the distributor 10. Other arrangements of the first channel 1011 and the second channel 1012 are also possible, and are not limited herein.

The first channel 1011 is closer to the first ring support 110 than the second channel 1012. That is, the distributor 10 may have a double air inlet channel. So configured, the distributor 10 can replenish air to different parts of the flame of the center fire cover 30. The portion of the first passage 1011 where the secondary air is supplied to the flame may be different depending on the distance of the first passage 1011 from the first ring support 110, for example, the portion of the first passage 1011 near the root of the center cover 30, the portion of the outer flame near the root, or the middle portion of the outer flame may be supplied with secondary air. Similarly, depending on the distance of the second passage 1012 from the first ring support 110, the secondary air may be supplied to the flame by the air flowing out through the second passage 1012, and for example, the secondary air may be supplied to the root portion of the center cover 30 at a slightly distant portion of the outer flame, a portion near the root portion of the outer flame, a middle portion of the outer flame, or a top portion of the outer flame by the second passage 1012.

Because the air intake passages of the prior art distributor 10 supplement a relatively large amount of air, and the central flame cover 30 typically has a relatively low air output, this results in heat exchange with the excess air and the flue gas of the inner annular flame holes 301 of the central flame cover 30, resulting in downward heat radiation; moreover, the fuel gas enters the distributor 10 through the nozzle below the distributor 10, and the downward radiated heat causes thermal expansion of the nozzle, resulting in a smaller aperture of the nozzle and reduced thermal efficiency.

According to the distributor 10, on the basis of the arrangement of the partition 130 and the arrangement of the partition 130, on one hand, a double air inlet channel can be formed between the first ring support part 110 and the second ring support part 120, so that air can be supplemented for different parts of the inner ring flame of the burner, and the combustion efficiency is improved; on the other hand, the heat exchange between the excessive air and the high-temperature flue gas is effectively avoided, the downward radiation of the heat of the high-temperature flue gas of the inner ring flame is effectively blocked, the attenuation of the heat load is reduced, and therefore the heat efficiency is effectively improved.

In one embodiment of the present invention, referring to fig. 4, the first ring support 110 has an outer sidewall 1112, the partition 130 has an inner sidewall 1311, the first channel 1011 is formed between the outer sidewall 1112 and the inner sidewall 1311, and the outer sidewall 1112 extends in a vertical direction. In this way, the air outlet direction of the air flowing out through the first duct 1011 is vertically upward. Referring to fig. 1, 4 and 6 in combination, the first ring support 110 generally supports the center fire cover 30. Since the center fire cover 30 is provided with the inner ring fire hole 301, and the inner ring fire hole 301 penetrates the center fire cover 30, the air outlet direction of the air entering through the first duct 1011 intersects the flame injection direction of the inner ring fire hole 301, and the center fire cover 30 can be more sufficiently supplemented with secondary air, and the root portion where the inner ring is likely to be air-supplemented. Thus, the air entering the first channel 1011 flows upwards along the vertical direction, and the flowing air can quickly contact the root of the inner ring flame, so that the root of the inner ring flame can be supplemented with air, the combustion is more sufficient, and the combustion efficiency can be further improved.

In one embodiment of the present invention, referring to fig. 4, the first channel 1011 defines a first air outlet direction, and the second channel 1012 defines a second air outlet direction, which is inclined with respect to the first air outlet direction. For ease of understanding and description, the first air-out direction is represented by a line segment where MN is located, and the second air-out direction is represented by a line segment where OP is located. The flow direction of air is indicated by solid arrows in fig. 4. In this way, when the first passage 1011 can supply air to the root of the inner ring flame of the burner, the second passage 1012 can supply air to the outside of the inner ring flame of the burner, so that the flame burns more fully, which contributes to the improvement of the flame temperature.

In an embodiment, not shown, the partition 130 is a flat plate, and the second air outlet direction OP may be parallel to the first air outlet direction MN. In one embodiment of the present invention, referring to fig. 4, the spacer 130 and the first ring support 110 have a first gap therebetween, and the first gap forms the first channel 1011. The separator 130 and the second ring support 120 have a second gap therebetween, which forms a second channel 1012. By the arrangement, the first channel 1011 can be ensured to be closer to the first ring supporting part 110 than the second channel 1012, so that the aim of supplementing air to different parts of the flame of the inner ring of the burner is fulfilled; and the structure is simple.

In one embodiment of the present invention, referring to fig. 1, 4 and 6 in combination, the first ring support 110 has a first ring top surface 1111, and the partition 130 has a first end 1301 and a second end 1302, the first end 1301 being closer to the first ring top surface 1111 than the second end 1302. From the second end 1302 to the first end 1301, the first gap decreases to constant and the second gap increases to constant. The first gap has a maximum at the second end 1302 and a minimum at the first end 1301. The second gap has a minimum value at the second end 1302 and a maximum value at the first end 1301. Therefore, based on gradual change of the first gap value, the first gap can guide the air entering the first channel 1011, gather the air to the outlet of the first channel 1011, enable the air to flow out along the extending direction of the part with unchanged size on the first gap, and can reshape the air to flow out, thereby playing a role in stabilizing flow; furthermore, because the root area of the flame is shorter, the arrangement of the first gap reduction also facilitates more accurate alignment of the root of the flame, further avoiding the phenomena of flame root flame separation and fire extinction. Based on gradual change setting of the second gap, the second gap can guide air entering the second channel 1012, so that the air can be better diffused to the outlet of the second channel 1012, and can flow out along the extending direction of the part with unchanged size on the second gap, and the air to be flowed out can be shaped, so that the steady flow effect is achieved; in addition, because the outer flame part is longer, the arrangement of the second gap increase is convenient to be matched to the outer flame part, and the heat efficiency is further improved.

In one embodiment of the invention, referring to fig. 4, the first gap has a minimum value d1, d1 may be 1mm to 6mm. For example, d1 may be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, or other values in between. Typically, the heat load supplied by the center fire cover 30 is 0.2KW to 1.2KW. By the arrangement, the first channel 1011 can supplement the most proper secondary air quantity for the flame root of the central fire cover 30, the secondary air quantity supplemented by the distributor 10 through the first channel 1011 can be matched with and suitable for the central fire cover 30 with the conventional specification, and the universality of the distributor 10 is improved.

In the design process, to achieve the desired thermal load Q _X for the center fire cover 30, the following formula may be used to calculate the desired d1 value, Q _X in Kw, d1 in mm,

Wherein n is the same value, and Q _X is more than or equal to 0.2KW and less than or equal to 1.2KW.

In one embodiment of the invention, referring to fig. 4, the second gap has a minimum value d2, d2 may be 4mm to 9mm. For example, d2 may be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or other values in between. So arranged, the second channel 1012 can supplement the outer flame of the central fire cover 30 with the most suitable secondary air quantity, and the secondary air quantity supplemented by the distributor 10 through the second channel 1012 can be matched with and suitable for the central fire cover 30 with the conventional specification, thereby improving the universality of the distributor 10.

In the design process, to achieve the desired thermal load Q _X for the center fire cover 30, the desired d2 value can be calculated using the following equation,

Wherein n is the same value, and Q _X is more than or equal to 0.2KW and less than or equal to 1.2KW.

In one embodiment of the present invention, referring to fig. 4, the partition 130 may include a first section 1310 and a second section 1320, from an end of the second end 1302 near the first ring top surface 1111 to the first end 1301, the first section 1310 extending parallel to the first air outlet direction MN, and the second section 1320 extending from the second end 1302 to be connected to the first section 1310. So arranged, the separator 130 is simple in structure, and easy to achieve the first gap gradation and the second gap gradation; also, the same first gap value may be achieved between the first segment 1310 and the first ring support 110 everywhere, and the first segment 1310 and the first ring support 110 form the outlet of the first channel 1011. The second gap may be gradually increased at an entrance of the second channel 1012 formed between the second segment 1320 and the second ring support 120. In addition, the same second gap value may be achieved between everywhere of the first segment 1310 and the second ring support 120.

In one embodiment of the invention, the second segment 1320 extends from the second end 1302 along a circular arc surface to connect to the first segment 1310, the circular arc surface having an arc in the range of 30 ° to 60 °. For example, the arc value may be 30 °, 35 °,40 °, 45 °,50 °, 55 °,60 °, or other values therebetween. So configured, the second segment 1320 in the circular arc shaped surface configuration provides better guidance for air entering the first channel 1011 and air entering the second channel 1012. When the outer diameter of the distributor 10 is constant, if the arc of the circular arc surface is smaller than 30 °, the second segment 1320 is too short, so that the guiding path of the second channel 1012 is too short, the air entering the second channel 1012 cannot be well diffused into a range corresponding to the length of the outer flame, and the outer flame is also easily impacted, so that the outer flame is unstable. If the arc of the circular arc surface is greater than 60, the second segment 1320 is too long, which in turn, makes the resulting guide path of the second channel 1012 too long, resulting in a reduced velocity of the supplemental secondary air. The arc range of the arc-shaped surface is 30-60 degrees, so that the second section 1320 is smaller than 1/4 of the circle where the arc-shaped surface is located, the guide effect is quicker and better, and the outer flame is ensured to be more stable.

In an embodiment of the invention, not shown, the second segment 1320 extends from the second end 1302 along a bevel to connect to the first segment 1310, the angle between the bevel and the first segment 1310 being in the range of 10 ° to 60 °. For example, the included angle value may be 10 °, 15 °, 20 °, 25 °,30 °, 35 °, 40 °, 45 °,50 °, 55 °,60 °, or other values therebetween. So arranged, the separator 130 is simpler in construction and easier to manufacture. When the overall height of the distributor 10 is a constant value, if the included angle is smaller than 10 °, the second section 1320 is too short, so that the guiding paths of the first channel 1011 and the second channel 1012 are too short, the air entering the second channel 1012 cannot be well diffused into the range corresponding to the outer flame length, and the inlet of the first channel 1011 is too narrow, so that the air is difficult to enter the first channel 1011, the guiding effect is poor, and sufficient secondary air cannot be provided. If the included angle is greater than 60 °, the entrance to the second passage 1012 is too narrow and air is more difficult to enter the second passage 1012. The inclined plane and the first section 1310 are arranged in an included angle range of 10-60 degrees, so that air can easily enter the first channel 1011 and the second channel 1012, and the second section 1320 can achieve a better guiding effect on the air entering the first channel 1011 and the air entering the second channel 1012.

In one embodiment, not shown, the second segment 1320 extends from the second end 1302 along a stepped surface to connect with the first segment 1310.

In one embodiment of the present invention, referring to fig. 1, the second ring support 120 may include a first ring wall 1210, a second ring wall 1220, and an outer ring bottom wall 1230. The first annular wall 1210 may surround the second annular wall 1220. The first annular wall 1210 is connected to the second annular wall 1220 by an outer annular bottom wall 1230. The first and second annular walls 1210, 1220 and the outer annular bottom wall 1230 enclose an outer annular flame-dividing chamber 1201. Referring to fig. 4, the second end 1302 may be lower than the outer ring bottom wall 1230 along a direction parallel to the first air outlet direction MN. By the arrangement, the distributor 10 is simpler to process and manufacture, and the processing technology is easy to realize; moreover, air is facilitated to enter the second channel 1012; moreover, when the overall height of the distributor 10 is constant, the second end 1302 is lower than the outer ring bottom wall 1230 and is higher than the outer ring bottom wall 1230, and the partition 130 can have a longer guiding path to meet the guiding requirement, which is equivalent to lowering the height of the second annular wall 1220, thereby lowering the height of the second annular supporting portion 120, so that the overall height of the distributor 10 is visually lowered and the user experience is improved.

In an embodiment of the invention, not shown, the second end 1302 may also be higher than the outer ring bottom wall 1230 or flush with the outer ring bottom wall 1230.

In one embodiment of the present invention, referring to fig. 1, 2, 5, and 9 in combination, the second ring support 120 may further include an extended bottom wall 1240, the extended bottom wall 1240 extending from the outer ring bottom wall 1230 to form a recess 1241 on the outer ring flame-out chamber 1201. The bottom of the partition 130 is provided with an outer ring injection pipe 140, and the outer ring injection pipe 140 communicates to the recess 1241. In fig. 9, for convenience of description of the flow direction of the gas, the flow direction of the gas is indicated by a straight line with an arrow, the flow direction of the air is indicated by a solid arrow, and the flow direction of the mixed gas of the air and the gas is indicated by a closed arrow. The gas and the primary air enter through the inlet of the outer ring injection pipe 140 and are mixed in the outer ring injection pipe 140, and the mixed gas of the air and the gas enters the concave part 1241. The cross-sectional area of the recess 1241 increases gradually from the bottom of the recess 1241 to the outer ring bottom wall 1230. The mixed gas of air and fuel gas enters the concave part 1241, and can diffuse from the bottom of the concave part 1241 to the top of the concave part 1241, and then enters the outer ring fire dividing chamber 1201. So set up, the depressed part 1241 can play the guide effect to the air and gas mixture, makes it by the both sides diffusion distribution of depressed part 1241 to whole outer loop fire dividing room 1201 fast, has accelerated distributor 10 to the distribution speed of gas mixture.

In one embodiment of the present invention, referring to fig. 1, 4 and 6 in combination, the first ring support 110 may include a third ring wall 1110 and an inner ring bottom wall 1120, and the third ring wall 1110 and the inner ring bottom wall 1120 may enclose to form an inner ring fire chamber 1101.

In one embodiment of the present invention, referring to fig. 1,2, 5, and 10 in combination, the bottom of the partition 130 is further provided with an inner ring injection pipe 150, and the inner ring injection pipe 150 and the outer ring injection pipe 140 vertically intersect to partition the bottom of the partition 130 into a plurality of regions. The various arrows in fig. 10 represent the same as in fig. 9. The fuel gas and the primary air enter through the inlet of the inner ring injection pipe 150 and are mixed in the inner ring injection pipe 150, and the mixed gas of the air and the fuel gas further enters the inner ring fire dividing chamber 1101. So arranged, the air inlet of the inner ring ejector tube 150 and the air inlet of the outer ring ejector tube 140 are positioned in different orientations, so that primary air to be sucked into the two ejector tubes does not interfere with each other; moreover, the multiple zones facilitate the installation of the components that require zoning, optimizing the structure of the distributor 10.

In one embodiment of the present invention, referring to fig. 1,2, 5 and 11 in combination, the spacer 130 is provided with a first through hole 1303 and a second through hole 1304, a first guide post 1330 is formed at an outer edge of the first through hole 1303 in a direction away from the first top surface 1111 of the ring, and a second guide post 1340 is formed at an outer edge of the second through hole 1304 in a direction away from the first top surface 1111 of the ring. The first through holes 1303 and the second through holes 1304 are respectively located in different areas. Note that the first guide post 1330 is not limited to be formed on the entire outer edge of the first through hole 1303. The second guide post 1340 is also not limited to be formed on the entire outer edge of the first through hole 1303. So configured, the first part may be inserted into the first through hole 1303, and the first guide post 1330 performs guiding and limiting in the radial direction. The second part may be inserted into the second through hole 1304 and guided and radially oriented by the second guide post 1340. The first guide post 1330 may facilitate the limiting of the first part mounted to the first through hole 1303.

In one embodiment of the invention, the first part may be a thermocouple. The second part may be an ignition needle. The first part and the second part may be other parts that need to be provided, which are not limited herein.

In one embodiment of the present invention, the first guide post 1330 may be formed at the entire outer edge of the first through hole 1303, and thus, the first guide post 1330 may have a generally annular shape.

In one embodiment of the present invention, the second guide post 1340 may be formed at a portion of the outer edge of the second through hole 1304, and thus, the second guide post 1340 may be located at the outer periphery of 1/4 outer edge, the outer periphery of 1/3 outer edge, the outer periphery of 1/2 outer edge, or the outer periphery of other portion of the outer edge of the second through hole 1304.

In one embodiment of the present invention, referring to FIG. 4, the inner side of the second annular wall 1220 is formed on a circle having a diameter D1, and the outer edge of the second end 1302 is formed on a circle having a diameter D2, D1 > D2. So arranged, the distributor 10 is simpler to manufacture; moreover, the inlet of the second channel 1012 is smoother, which can reduce the overall radial dimension of the distributor 10 and reduce the consumption of materials.

Referring to fig. 3 to 13 in combination, a burner 1 according to the present invention may include an outer ring fire cover 20, a center fire cover 30, and a distributor 10 of any of the foregoing. Wherein the outer ring fire cover 20 may be supported at the second ring support 120. The outer ring fire cover 20 has an outer ring air outlet channel 202. The outer ring gas outlet channel 202 may be in communication with the outer ring flame-out chamber 1201. The center fire cover 30 may be supported on the first ring support 110. The center fire cover 30 may have an inner ring air outlet channel 302. The inner ring gas outlet channel 302 may be in communication with the inner ring flame chamber 1101. Because the distributor 10 has the above technical effects, the burner 1 including the distributor 10 also has the above technical effects. The burner 1 can supplement air for different parts of the flame of the central flame cover 30, so that the combustion efficiency is improved; also, the center fire cover 30 can be prevented from being supplemented with excessive secondary air. In addition, the separator 130 can gather the combustion heat of the inner-ring flame above the separator 130, so that the heat of the high-temperature flue gas of the inner-ring flame is effectively prevented from radiating downwards, the phenomenon of thermal expansion of nozzles and other structures below the distributor 10 is avoided, the attenuation of heat load is reduced, and the heat efficiency is effectively improved; but also the service life of the burner 1.

Referring to fig. 12, the outer ring fire cover 20 has an inner ring wall 21 and an outer ring wall 22, an outer ring air outlet passage 202 is formed between the inner ring wall 21 and the outer ring wall 22, an outer ring air outlet hole 201 is formed in the outer ring wall 22, the outer ring air outlet passage 202 is communicated with the outside through the outer ring air outlet hole 201, and secondary air required for gas combustion of the outer ring air outlet passage 202 can be provided by the outer ring air outlet hole 201.

In one embodiment of the present invention, referring to fig. 4 and 13 in combination, the center fire cover 30 has a fire outlet 303 thereon, and the fire outlet 303 may communicate with the inner ring air outlet channel 302 through the inner ring fire hole 301. The first channel 1011 has an air outlet 1011a, the air outlet 1011a being not higher than the fire outlet 303. With this arrangement, the air can be supplied to the flame root after flowing out through the air outlet 1011a, and the effect of supplying secondary air to the inner ring flame root is better.

In an embodiment not shown, an auxiliary air outlet may be provided in the inner annular wall 21, which auxiliary air outlet communicates with the second channel 1012. So set up, distributor 10 can also supply secondary air for outer ring fire lid 20, and the inside of combustor 1 not only can supply secondary air for center fire lid 30, can also supply secondary air for outer ring fire lid 20, has improved the thermal efficiency of combustor 1. Even if the inner ring fire holes 301 of the center fire cover 30 are blocked, the secondary air for supplementing to the center fire cover 30 can also supplement to the auxiliary air outlet holes of the outer ring fire cover 20, thereby avoiding insufficient combustion to form a large amount of smoke and improving the performance of the burner 1.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely for convenience of describing the present invention and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, without limiting the scope of protection of the present invention; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

For ease of description, regional relative terms, such as "over … …," "over … …," "on the upper surface of … …," "over," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features shown in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The present invention has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. In addition, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible as taught by the present invention, which fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (18)

1. The utility model provides a distributor, includes first ring supporting part and second ring supporting part at least, first ring supporting part with be formed with the air inlet passageway between the second ring supporting part, its characterized in that is provided with the separator in the air inlet passageway, the separator will the air inlet passageway separates into first passageway and second passageway, first passageway is more close to than the second passageway first ring supporting part.

2. The distributor according to claim 1, wherein the first ring support has an outer side wall and the divider has an inner side wall, the first channel being formed between the outer side wall and the inner side wall, the outer side wall extending in a vertical direction.

3. The flame divider of claim 2, wherein the first channel defines a first air-out direction and the second channel defines a second air-out direction, the second air-out direction being oblique to the first air-out direction.

4. The distributor of claim 1, wherein a first gap is provided between the divider and the first ring support, the first gap defining the first channel, the first channel defining a first direction of air outlet; a second gap is provided between the divider and the second ring support, the second gap forming the second channel.

5. The distributor of claim 4, wherein said first ring support has a first ring top surface, said divider has a first end and a second end, said first end being closer to said first ring top surface than said second end, said first gap decreasing to constant from said second end to said first end, said second gap increasing to constant.

6. The distributor of claim 5, wherein said divider comprises a first section and a second section, from an end of said second end proximate said first ring top surface to said first end, said first section extending parallel to said first air outlet direction, said second section extending from said second end to connect with said first section.

7. The distributor according to claim 6 wherein said second section extends from said second end along a circular arc-shaped surface to connect to said first section, said circular arc-shaped surface having an arc in the range of 30 ° to 60 °.

8. The distributor according to claim 6 wherein said second section extends from said second end along a bevel to connect to said first section, said bevel and said first section having an angle therebetween in the range of 10 ° to 60 °.

9. The flame divider of claim 5, wherein the second ring support comprises a first annular wall, a second annular wall, and an outer annular bottom wall, the first annular wall surrounding the second annular wall, the first annular wall being connected to the second annular wall by the outer annular bottom wall, the first and second annular walls and the outer annular bottom wall enclosing an outer annular flame dividing chamber, the second end being lower than the outer annular bottom wall in a direction parallel to the first air outlet direction.

10. The distributor of claim 9, wherein the second ring support further comprises an extended bottom wall extending from the outer ring bottom wall to form a recess in the outer ring distributor chamber, the bottom of the divider is provided with an outer ring ejector tube, the outer ring ejector tube communicates to the recess, and the cross-sectional area of the recess increases gradually from the bottom of the recess to the outer ring bottom wall.

11. The distributor of claim 10, wherein the bottom of the divider is further provided with an inner ring eductor, the inner ring eductor and the outer ring eductor perpendicularly intersecting to divide the bottom of the divider into a plurality of regions.

12. The distributor according to claim 11, wherein the partition is provided with a first through hole and a second through hole, a first guide post is formed at the outer edge of the first through hole in a direction away from the top surface of the first ring, and a second guide post is formed at the outer edge of the second through hole in a direction away from the top surface of the first ring, and the first through hole and the second through hole are located in different areas.

13. The distributor according to claim 9 wherein the inner side of the second annular wall is formed on a circle of diameter D1 and the outer edge of the second end is formed on a circle of diameter D2, D1 > D2.

14. The distributor according to claim 5, wherein the first gap has a minimum value d1, d1 being 1mm to 6mm.

15. The distributor according to claim 5, wherein the second gap has a minimum value d2, d2 being 4mm to 9mm.

16. A burner comprising an outer ring fire cover and a central fire cover, wherein the burner further comprises a distributor as claimed in any one of claims 1 to 15, wherein the outer ring fire cover is supported on the second ring support and the central fire cover is supported on the first ring support.

17. The burner of claim 16, wherein the central fire cap has a fire outlet thereon, and wherein the first passage has an air outlet that is no higher than the fire outlet.

18. The burner of claim 16 wherein the outer annular fire cover has an inner annular wall with an auxiliary air outlet opening in communication with the second passage.