CN219433264U - Outer fire cover and burner with same - Google Patents

Abstract

The utility model provides an outer fire cover and a burner with the same, and belongs to the technical field of burners, wherein the outer fire cover comprises a fire cover body, the fire cover body comprises an outer side wall, an inner side wall, a top wall and an anti-blocking structure, the outer side wall is provided with an outer ring fire outlet hole, the inner side wall is positioned at the inner side of the outer side wall, the top wall comprises an outer ring plate and an inner ring plate, the outer side of the outer ring plate is fixedly connected with the outer side wall, the outer side of the inner ring plate is fixedly connected with the inner side of the outer ring plate, the inner side of the inner ring plate is fixedly connected with the top of the inner side wall, and the inner ring plate close to the inner side wall is provided with an inner ring fire outlet hole; the anti-blocking structure is fixedly connected with the inner annular plate and is provided with a through hole communicated with the inner annular fire hole, and the anti-blocking structure is used for preventing overflow liquid flowing down from the inner annular plate from flowing into the through hole to block the inner annular fire hole. The utility model can effectively reduce the blocking probability of the inner ring fire hole and improve the heat efficiency.

Description

Outer fire cover and burner with same

Technical Field

The utility model relates to the technical field of combustors, in particular to an external fire cover and a combustor with the same.

Background

The main problems of the existing gas stove burners are as follows: the heating area of the bottom of the pan is small, the firepower is uneven, the thermal efficiency is low, and particularly under the action of overflow liquid, the fire hole is easy to be blocked, thereby generating the phenomena of fire removal and flameout.

Disclosure of Invention

The utility model aims to provide an outer fire cover which can prevent overflow liquid from entering the inner ring fire outlet holes, effectively reduce the probability of blocking the inner ring fire outlet holes and improve the heat efficiency.

The utility model aims to provide a combustor, which can simultaneously realize an inner fire ring and an outer fire ring on an outer fire cover, reduce the temperature difference between the outer fire cover and the inner fire cover and improve the combustion efficiency of the combustor.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, an outer fire cover is provided. The outer fire lid includes the fire lid body, the fire lid body includes:

the outer side wall is provided with an outer ring fire hole;

an inner side wall positioned inside the outer side wall

The top wall comprises an outer annular plate and an inner annular plate, wherein the outer side of the outer annular plate is fixedly connected with the outer side wall, the outer side of the inner annular plate is fixedly connected with the inner side of the outer annular plate, the inner side of the inner annular plate is fixedly connected with the top of the inner side wall, and an inner annular fire outlet hole is formed in the inner annular plate close to the inner side wall;

the anti-blocking structure is fixedly connected to the inner annular plate and provided with a through hole communicated with the inner annular fire outlet hole, and is used for preventing overflow liquid flowing down from the inner annular plate from flowing into the through hole to block the inner annular fire outlet hole.

According to an embodiment of the present utility model, the blocking preventing structures are plural and distributed at equal intervals along the inner annular plate.

According to an embodiment of the present utility model, the blocking prevention structure includes:

the bulge part comprises a bottom surface and a bearing surface, wherein the bottom surface is fixedly connected with the inner annular plate, and the bearing surface is fixedly connected with the contact end of the inner side wall and the inner annular plate;

wherein, the through hole passes in proper order the face of accepting and bottom surface to communicate the inner ring goes out the fire hole.

According to one embodiment of the utility model, the number of the through holes is not less than two and the through holes are uniformly distributed along the bearing surface, and the through holes are in one-to-one correspondence with the inner ring fire outlet holes.

According to one embodiment of the utility model, the included angle between the axis of the outer ring fire outlet hole and the bottom surface of the outer fire cover is 35-70 degrees, and the included angle between the inner ring fire outlet hole and the bottom surface of the outer fire cover is 35-75 degrees.

According to an embodiment of the utility model, the junction of the outer and inner annular plates is higher than the outer and inner side walls to avoid retention of overflow liquid at the top wall.

According to another aspect of the present utility model, there is provided a burner comprising an outer fire cover as claimed in any one of the above;

an inner fire cover;

the furnace end comprises a first air passage and a second air passage, wherein the outer fire cover is covered on the first air passage, and the inner fire cover is covered on the second air passage;

the annular partition plate is positioned in the first air passage and fixedly connected between the top wall and the furnace end, wherein the annular partition plate divides the first air passage into an independent outer annular air passage and an independent inner annular air passage;

the outer ring fire outlet hole is communicated with the outer ring air passage, and the inner ring fire outlet hole is communicated with the inner ring air passage.

According to one embodiment of the utility model, a fire transfer hole is formed in the top of the annular partition plate, and the fire transfer hole is communicated with the outer annular air passage and the inner annular air passage.

According to an embodiment of the utility model, the axis of the fire transfer hole is collinear with the axis of one of the through holes for preventing the fire transfer hole from being blocked.

According to an embodiment of the present utility model, the outer fire cover further includes:

and the fire transmission groove is arranged at the top of the outer fire cover and is communicated between the outer ring air passage and the inner ring air passage so as to improve the flame transmission speed between the outer ring air passage and the inner ring air passage.

One embodiment of the present utility model has the following advantages or benefits:

according to the outer fire cover, the anti-blocking structure can be used for preventing overflow liquid flowing down from the inner annular plate from flowing into the through hole to block the inner annular fire outlet, so that the probability of blocking the inner annular fire outlet is effectively reduced.

The outer fire cover can form two fire rings through the outer ring fire outlet holes and the inner ring fire outlet holes, so that the fire area is increased, and the heat efficiency of the outer fire cover is improved.

According to the burner disclosed by the utility model, the two independent outer ring air passages and the independent inner ring air passages are formed through the annular partition plate, so that the structure is simple and reasonable, the inner and outer two fire rings can be simultaneously realized on the outer fire cover, the temperature difference between the outer fire cover and the inner fire cover is reduced, and the combustion efficiency of the burner is improved. The burner in this embodiment includes any of the outer fire covers described above, and since the outer fire covers have the technical effects described above, the burner having the outer fire covers described above should have the same technical effects.

Through pass the fire groove intercommunication outer loop air flue with the inner loop air flue can make the transmission of flame more quick, improves ignition efficiency.

Drawings

The above and other features and advantages of the present utility model will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a schematic view of an outer fire cover according to an exemplary embodiment.

Fig. 2 is a cross-sectional view of an outer fire cover shown according to an exemplary embodiment.

FIG. 3 is a schematic diagram of a combustor shown in accordance with an exemplary embodiment.

FIG. 4 is a cross-sectional view of a combustor shown in accordance with an exemplary embodiment.

Wherein reference numerals are as follows:

1. a fire cover body; 11. an outer sidewall; 111. an outer ring fire hole; 12. an inner sidewall; 13. a top wall; 131. an outer annular plate; 132. an inner annular plate; 14. an anti-blocking structure; 140. a through hole; 141. a boss; 15. a fire transfer groove; 2. an inner fire cover; 3. a burner; 31. an outer annular airway; 32. an inner annular airway; 33. a seal ring; 4. an annular partition plate; 41. and a fire transmission hole.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.

As shown in fig. 1 to 2, fig. 1 shows a schematic view of an outer fire cover provided by the utility model. Fig. 2 shows a cross-sectional view of the outer fire cover provided by the utility model.

The embodiment of the utility model provides an outer fire cover, which comprises a fire cover body 1, wherein the fire cover body 1 comprises:

an outer sidewall 11 provided with an outer ring fire hole 111;

an inner side wall 12 positioned inside the outer side wall 11

The top wall 13 comprises an outer annular plate 131 and an inner annular plate 132, wherein the outer side of the outer annular plate 131 is fixedly connected with the outer side wall 11, the outer side of the inner annular plate 132 is fixedly connected with the inner side of the outer annular plate 131, the inner side of the inner annular plate 132 is fixedly connected with the top of the inner side wall 12, and an inner annular fire outlet hole is formed in the inner annular plate 132 close to the inner side wall 12;

the anti-blocking structure 14 is fixedly connected to the inner annular plate 132, and is provided with a through hole 140 communicated with the inner annular fire hole, so as to prevent overflow liquid flowing down from the inner annular plate from flowing into the through hole to block the inner annular fire hole.

The anti-blocking structure 140 is fixedly connected to the inner annular plate 132, the through hole 140 of the anti-blocking structure 14 corresponds to the inner annular fire hole, so that the fuel gas can flow out of the inner annular fire hole and the through hole 140 to be burnt, and the anti-blocking structure 140 can prevent overflow liquid flowing down from the inner annular plate from flowing into the through hole 140 to block the inner annular fire hole. In addition, by distributing the outer ring fire outlet holes 111 and the inner ring fire outlet holes on both sides of the fire cover body 1, it is possible to make one outer fire cover form two fire rings to increase the fire area and improve the thermal efficiency of the outer fire cover.

In a preferred embodiment of the present utility model, the blocking prevention structure 14 is provided in plurality and is equally spaced along the inner annular plate 132.

The anti-blocking structure 14 includes:

the protruding portion 141 includes a bottom surface and a receiving surface, wherein the bottom surface is fixedly connected to the inner annular plate 132, and the receiving surface is fixedly connected to a contact end between the inner sidewall 12 and the inner annular plate 132;

wherein, the through holes 140 sequentially penetrate through the receiving surface and the bottom surface to communicate with the inner ring fire holes.

The number of the through holes 140 is not less than two, and the through holes 140 are uniformly distributed along the bearing surface, and the through holes 140 correspond to the inner ring fire holes one by one.

As shown in fig. 1-2, the longitudinal section of the protruding portion 141 is similar to a triangle, a trapezoid or a rectangle, preferably similar to a triangle, wherein the receiving surface can be an inclined surface or an arc surface with the same radian as that of the inner annular plate, so that when the through hole 140 is communicated with the inner annular fire hole, overflow liquid flows downwards along the receiving surface, and the blocking probability of the inner annular fire hole can be effectively reduced;

in addition, the gas can flow out through the inner ring fire hole and the through holes 140 in sequence, and because the number of the through holes on the anti-blocking structure 14 is not less than 2 and is uniformly distributed along the bearing surface, and the anti-blocking structure 14 is a plurality of the inner ring-shaped plates 132 which are uniformly distributed at intervals, a uniform fire ring can be formed on the inner side of the outer fire cover, and the flame area and the combustion heat efficiency are improved.

In a preferred embodiment of the present utility model, the angle between the axis of the outer ring fire hole 111 and the bottom surface of the outer fire cover is 35-70 degrees, and the angle between the inner ring fire hole and the bottom surface of the outer fire cover is 35-75 degrees

As shown in fig. 1-2, in this embodiment, the included angle between the axis of the outer ring fire hole 111 and the bottom surface of the outer fire cover is 35-70 °, and the included angle between the inner ring fire hole and the bottom surface of the outer fire cover is 35-75 °, which is beneficial to the outflow of fuel gas, and has reasonable structural design, improved thermal efficiency and reduced waste gas.

In a preferred embodiment of the utility model, the junction of the outer annular and inner annular plates 132 is higher than the outer side wall 11 and inner side wall 12 to avoid retention of overflow liquid at the top wall 13.

As shown in fig. 1-2, the connection between the outer ring and the inner ring 132 is higher than the outer side wall 11 and the inner side wall 12, so that the overflow liquid can quickly flow out of the outer fire cover from two sides of the top wall 13, thereby avoiding the overflow liquid from being retained in the top wall 13 and blocking the fire hole, and reducing the conditions of flameout and fire loss.

As shown in fig. 1 to 4, fig. 1 shows a schematic view of an outer fire cover provided by the utility model. Fig. 2 shows a cross-sectional view of the outer fire cover provided by the utility model. Fig. 3 shows a schematic view of a burner provided by the present utility model. Fig. 4 shows a cross-sectional view of a burner provided by the present utility model.

A burner of an embodiment of the present utility model includes:

an outer fire cover as in any one of the above; an inner fire cover 2;

the furnace end 3 comprises a first air passage and a second air passage, wherein the outer fire cover is covered on the first air passage, and the inner fire cover 2 is covered on the second air passage;

an annular partition plate 4, located in the first air passage and fixedly connected between the top wall 13 and the burner 3, wherein the annular partition plate 4 divides the first air passage into an independent outer air passage 31 and an independent inner air passage 32;

wherein, the outer ring fire hole 111 communicates with the outer ring air flue 31, and the inner ring fire hole communicates with the inner ring air flue 32.

The burner is characterized in that the outer fire cover is arranged on the first air passage, the inner fire cover 2 is covered on the second air passage, the annular partition plate 4 divides the first air passage into an independent outer annular air passage 31 and an independent inner annular air passage 32, in addition, the burner further comprises 3 injection pipes, and the 3 injection pipes are respectively used for conveying fuel gas to the outer annular air passage 31, the inner annular air passage 32 and the second air passage. The burner in this embodiment includes any of the outer fire covers described above, and since the outer fire covers have the technical effects described above, the burner having the outer fire covers described above should have the same technical effects.

In a preferred embodiment of the present utility model, a fire transfer hole 41 is formed at the top of the annular partition plate 4, and the fire transfer hole 41 communicates the outer annular air passage 31 and the inner annular air passage 32.

The axis of the fire transfer hole 41 is collinear with the axis of one of the through holes 140 for preventing the fire transfer hole 41 from being blocked.

As shown in fig. 1-4, the fire transfer hole 41 communicates with the outer ring air passage 31 and the inner ring air passage 32, and corresponds to one of the through holes 140, that is, the axis of the fire transfer hole 41 is collinear with the axis of one of the through holes 140, and because the through holes 140 are on the inclined plane of the boss 141, the overflow liquid can slide down quickly on the boss 141, and cannot flow into the through holes, so that the fire transfer hole 41 is prevented from being blocked.

In a preferred embodiment of the present utility model, the outer fire cover further comprises:

the flame transfer groove 15 is arranged at the top of the outer flame cover and is communicated between the outer ring air passage 31 and the inner ring air passage 32 so as to improve the flame transfer speed between the outer ring air passage 31 and the inner ring air passage 32.

As shown in fig. 1-4, the flame propagation groove 15 can simultaneously communicate with the outer ring air passage 31 and the inner ring air passage 32, preferably, the flame propagation groove 15 communicates with the outer ring flame outlet 111 and the inner ring flame outlet to increase the flame propagation speed between the outer ring air passage 31 and the inner ring air passage 32.

In another preferred scheme, the fire transfer groove 15 is communicated with the outer ring air passage 31 and the inner ring air passage 32, and is also communicated with the fire transfer hole 41 on the annular partition plate 4, when the fuel gas at the fire transfer hole 41 is ignited, the flame can be quickly transferred to the outer ring fire hole 111, and the flame can be quickly transferred through the fire transfer groove 15 and the fire transfer hole 41, so that the ignition efficiency is improved.

In embodiments of the present utility model, the term "plurality" refers to two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the embodiments of the present utility model.

In the description of the present specification, the terms "one embodiment," "a preferred embodiment," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model and is not intended to limit the embodiment of the present utility model, and various modifications and variations can be made to the embodiment of the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.

Claims (10)

1. An outer fire cover, characterized in that, the outer fire cover includes fire cover body (1), fire cover body (1) includes:

the outer side wall (11) is provided with an outer ring fire hole (111);

an inner side wall (12) positioned inside the outer side wall (11)

The top wall (13) comprises an outer annular plate (131) and an inner annular plate (132), wherein the outer side of the outer annular plate (131) is fixedly connected with the outer side wall (11), the outer side of the inner annular plate (132) is fixedly connected with the inner side of the outer annular plate (131), the inner side of the inner annular plate (132) is fixedly connected with the top of the inner side wall (12), and an inner annular fire outlet hole is formed in the inner annular plate (132) close to the inner side wall (12);

and the anti-blocking structure (14) is fixedly connected with the inner annular plate (132) and provided with a through hole (140) communicated with the inner annular fire hole, and is used for preventing overflow liquid flowing down from the inner annular plate (132) from flowing into the through hole (140) to block the inner annular fire hole.

2. An outer fire cover according to claim 1, wherein the anti-blocking structure (14) is a plurality and equally spaced along the inner annular plate (132).

3. An outer fire cover according to claim 2, wherein the anti-blocking structure (14) comprises:

the protruding part (141) comprises a bottom surface and a bearing surface, wherein the bottom surface is fixedly connected with the inner annular plate (132), and the bearing surface is fixedly connected with the contact end of the inner side wall (12) and the inner annular plate (132);

wherein, the through hole (140) sequentially passes through the bearing surface and the bottom surface to be communicated with the inner ring fire hole.

4. An outer fire cover according to claim 3, wherein the number of through holes (140) is not less than two and the through holes (140) are uniformly distributed along the receiving surface, and the through holes (140) and the inner ring fire outlet holes are in one-to-one correspondence.

5. An outer fire cover according to claim 1, characterized in that the angle between the axis of the outer ring fire outlet hole (111) and the bottom surface of the outer fire cover is 35-70 °, and the angle between the inner ring fire outlet hole and the bottom surface of the outer fire cover is 35-75 °.

6. An outer fire cover according to claim 1, characterised in that the junction of the outer annular and inner annular plates (132) is higher than the outer side wall (11) and inner side wall (12) to avoid retention of overflow liquid at the top wall (13).

7. A burner, comprising:

an outer fire cover as claimed in any one of claims 1 to 6;

an inner fire cover (2);

the furnace end (3) comprises a first air passage and a second air passage, wherein the outer fire cover is covered on the first air passage, and the inner fire cover (2) is covered on the second air passage;

the annular partition plate (4) is positioned in the first air passage and fixedly connected between the top wall (13) and the furnace end (3), wherein the annular partition plate (4) divides the first air passage into an independent outer annular air passage (31) and an independent inner annular air passage (32);

wherein, outer loop fire hole (111) intercommunication outer loop air flue (31), interior ring fire hole intercommunication inner ring air flue (32).

8. Burner according to claim 7, characterized in that the top of the annular partition (4) is provided with a fire transfer hole (41), the fire transfer hole (41) communicating the outer annular air duct (31) with the inner annular air duct (32).

9. Burner according to claim 8, wherein the axis of the fire transfer holes (41) is collinear with the axis of one of the through holes (140) for preventing the fire transfer holes (41) from being blocked.

10. The burner of claim 7 wherein the outer fire cover further comprises:

and the flame transfer groove (15) is arranged at the top of the outer flame cover and is communicated between the outer ring air passage (31) and the inner ring air passage (32) so as to improve the flame transfer speed between the outer ring air passage (31) and the inner ring air passage (32).