CN217685004U - Fire lid and combustor - Google Patents

Abstract

The application relates to the technical field of kitchen equipment, discloses a fire lid, includes: the top wall is annular; pass fiery portion, set up in the roof top, including the base member that radially extends along the roof and set up in the groove of passing fiery of base member, pass fiery groove and run through the base member along inside and outside direction. This application fire lid's biography fire portion sets up in the roof top that the fire covered, will pass the fire groove and set up in the base, and like this, the position of passing the fire groove is higher than the plane at the roof place that the fire covered, and impurity such as hot water juice that drops to the wall surface of reaching the top is difficult to get into and passes the fire inslot, can avoid passing the fire groove to be blockked up, guarantees to pass the fire groove smoothly and passes the fire. The present application further discloses a combustor.

Description

Fire lid and combustor

Technical Field

The application relates to the technical field of kitchen equipment, for example to a fire cover and a combustor.

Background

The main structure of the gas cooker comprises a cooker surface, a fire cover, a burner, a stove frame, a valve body, a control component, a pipeline and the like. Among them, the fire cover is a portion of the burner where the upper end temperature is the highest, and is also called a distributor. The fire cover is an important part of a combustor in the gas cooker, and whether the structural design of the fire cover is reasonable or not plays an important role in the performance of the whole combustor.

In the related art, the fire cover comprises a central fire cover and an outer ring fire cover, the central fire cover and the outer ring fire cover are respectively independent parts, an inner fire hole and an ignition hole are formed in the central fire cover, an outer fire hole is formed in the outer ring fire cover, and the structure is complex. The gas is respectively delivered to the inner fire hole and the outer fire hole after being primarily mixed with the air in the furnace end. The fire cover is provided with the fire transmission groove, and after the ignition hole was igniteed, flame can ignite outer fire hole through the fire transmission groove, and the fire transmission groove plays the effect of transmission and guide, guarantees that outer fire hole ignites smoothly.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the soup is easy to flow into the fire transfer groove to block the fire transfer groove, and the flame cannot transfer fire through the fire transfer groove.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a fire cover and a burner, which can avoid a soup runner from transmitting fire in a fire channel and ensure smooth fire transmission of the fire channel.

The disclosed embodiment provides a fire cover, including:

the top wall is annular;

the fire transfer portion is arranged above the top wall and comprises a base body extending along the radial direction of the top wall and a fire transfer groove arranged on the base body, and the fire transfer groove penetrates through the base body along the inner direction and the outer direction.

In some embodiments, the opposing walls of the fire transfer slots are co-inclined.

In some embodiments, the base includes an upright side surface, and the notch of the fire transfer slot is disposed on the upright side surface.

In some embodiments, the fire cover further comprises a side plate which is arranged below the top wall and forms a gas mixing chamber with the top wall, a pore passage which is communicated with the fire transfer groove is arranged in the base body, one end of the pore passage is communicated with the gas mixing chamber, and the other end of the pore passage is arranged in the base body and is a blind end.

In some embodiments, the duct wall of the duct is provided with openings communicating with the fire-transfer grooves, the openings extending in the circumferential direction of the duct wall.

In some embodiments, the side panel comprises:

an inner side plate connected with the inner edge of the top wall and extending downwards;

an outer panel connected to an outer edge of the top wall and extending downward;

the spacing side plate is arranged between the inner side plate and the outer side plate and connected with the top wall, an inner air mixing chamber is formed between the spacing side plate and the inner side plate, and an outer air mixing chamber is formed between the spacing side plate and the outer side plate;

the pore channel comprises an inner pore channel and an outer pore channel, the inner pore channel is arranged corresponding to the inner air mixing chamber, and the outer pore channel is arranged corresponding to the outer air mixing chamber, so that the fire transfer groove is communicated with the inner air mixing chamber and the outer air mixing chamber.

In some embodiments, the inner cells include a first cell and a second cell, the first cell being closer to the inner plate than the second cell, the first cell having cells that slope toward the center of the circle, and the second cell having cells that slope away from the center of the circle.

In some embodiments, the outer cells include third and fourth cells, the cells of the third and fourth cells each being inclined away from the center of the circle.

In some embodiments, the fourth channel is closer to the outer panel than the third channel, and the fourth channel has a smaller angle with the horizontal than the third channel.

The disclosed embodiment also provides a burner, including:

a furnace end;

the fire cover provided by any one of the above embodiments is disposed above the burner.

The fire cover and the burner provided by the embodiment of the disclosure can realize the following technical effects: this application fire lid's biography fire portion sets up in the roof top that the fire covered, will pass the fire groove and set up in the base, and like this, the position of passing the fire groove is higher than the plane at the roof place that the fire covered, and impurity such as hot water juice that drops to the wall surface of reaching the top is difficult to get into and passes the fire inslot, can avoid passing the fire groove to be blockked up, guarantees to pass the fire groove smoothly and passes the fire.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated in the accompanying drawings, which correspond to the accompanying drawings and not in a limiting sense, in which elements having the same reference numeral designations represent like elements, and in which:

FIG. 1 is a schematic view of a fire cover according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of section E of FIG. 1;

FIG. 3 is a top view of another fire cover provided by embodiments of the present disclosure;

FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 3;

FIG. 5 is an enlarged view of section F of FIG. 4;

FIG. 6 is a schematic view of the inner side of another fire cover provided by the embodiment of the present disclosure;

FIG. 7 is a schematic view of a combustor provided in accordance with embodiments of the present disclosure;

FIG. 8 is a schematic structural view of another fire cover provided by an embodiment of the present disclosure;

fig. 9 is an enlarged view of a portion a of fig. 8.

Reference numerals:

40. a fire cover; 410. a top wall; 420. an inner side plate; 430. an outer panel; 490. a partition side plate; 440. a gas mixing chamber; 4401. an inner air mixing chamber; 4402. an outer gas mixing chamber; 450. an outer fire hole; 460. an inner fire hole; 470. an ignition hole; 4701. a third fire hole; 4702. a fourth fire hole; 4703. a fifth fire hole; 60. a fire transfer part; 610. a base; 6101. a vertical side surface; 620. a fire transfer groove; 630. a first aperture; 640. a second aperture; 650. a third aperture; 660. a fourth porthole; 10. a furnace end.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other cases, well-known structures and tanks may simplify the illustration, to simplify the drawings.

The terms "first," "second," and the like in the description and claims of the embodiments of the disclosure and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and embodiments thereof, and are not intended to limit the indicated tanks, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; either directly or indirectly through an intermediary, or internal communication between two tanks, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 1, 2 and 7, the present disclosure provides a fire lid 40, which includes a top wall 410 and a fire-transmitting portion 60, wherein the top wall 410 is annular; the fire transfer part 60 is disposed above the top wall 410, and includes a base 610 extending along the radial direction of the top wall 410 and a fire transfer groove 620 disposed on the base 610, wherein the fire transfer groove 620 penetrates through the base 610 in the inward and outward directions.

The top wall 410 top of fire lid 40 is set up to the portion 60 of passing a fire that this disclosed embodiment provided, will pass a fire groove 620 and set up in base member 610, like this, passes a fire groove 620's position and is higher than the plane at the top wall 410 place of fire lid 40, drops to impurity such as hot water juice on top wall 410 surface and is difficult to get into and passes a fire groove 620 in, can avoid passing a fire groove 620 and be blockked up, guarantees to pass a fire groove 620 and passes a fire smoothly.

The fire transfer part 60 is disposed above the top wall 410, the base 610 extends in a radial direction of the top wall 410 and protrudes upward relative to the top wall 410, and the base 610 is positioned higher than an upper surface of the top wall 410. The fire transfer groove 620 is formed in the base 610, and the height of the fire transfer groove 620 is higher than the upper surface of the top wall 410, so that it is difficult to enter the fire transfer groove 620 even if there are impurities such as cooking liquor on the top wall 410.

Optionally, the base 610 includes vertical sides 6101, and the notches of the fire transfer slots 620 are disposed on the vertical sides 6101. Thus, on one hand, the notch height of the fire transfer groove 620 can be higher than the upper surface of the top wall 410, so that impurities such as soup and the like are difficult to flow into the fire transfer groove 620; on the other hand, the notch is located on the vertical side 6101, and can also prevent impurities such as soup from falling into the fire transfer groove 620 from above the fire cover 40. With the fire cover 40 of the disclosed embodiment, the fire transfer grooves 620 are not easily blocked by impurities.

Alternatively, the base body 610 of the fire transfer part 60 extends in a radial direction of the top wall 410, one end extends to an inner ring of the top wall 410, the other end extends to an outer ring of the top wall 410, the inner ring of the top wall 410 is provided with the ignition hole 470, the outer ring is provided with the outer fire hole 450, one end of the fire transfer groove 620 communicates with the ignition hole 470, and the other end communicates with the outer fire hole 450. Thus, after the ignition hole 470 is ignited, the gas can be transmitted to the outer ignition hole 450 of the ignition cover 40 through the ignition slot 620 to ignite the outer ignition hole 450, so that the ignition of the outer ignition hole 450 is realized, and the ignition slot 620 plays a role in transmission and guidance to ensure the smooth ignition of the outer ignition hole 450.

As shown in connection with fig. 1 and 2, in some embodiments, the fire lid 40 includes: a top wall 410, an outer side plate 430 and an inner side plate 420, wherein the top wall 410 is circular; the outer side plate 430 is connected with the outer edge of the top wall 410, is positioned below the top wall 410, and is provided with a plurality of outer fire holes 450 at intervals along the circumferential direction of the outer side plate 430; the inner side plate 420 is connected to the inner edge of the top wall 410, is located below the top wall 410, and is provided with a plurality of inner fire holes 460 at intervals in sequence along the circumferential direction of the inner side plate 420. Thus, the inner ring and outer ring flames of the fire cover 40 can be uniformly combusted along the circumferential direction, and the cookware can be uniformly heated.

Alternatively, the heights of the plurality of outer fire holes 450 are the same and the heights of the plurality of inner fire holes 460 are the same. Thus, the outer ring flame and the inner ring flame can be uniformly combusted in the height direction.

In some embodiments, the base 610 further includes end sides disposed at both ends of the vertical side 6101, and the fire-propagating grooves 620 extend through the vertical side 6101 and the end sides of the base 610. In this way, the fire-transmitting groove 620 can communicate the inner and outer rings of the top wall 410, thereby smoothly guiding the flame to the outer ring.

In some embodiments, opposing slot walls of the fire transfer slots 620 are co-inclined. The opposite groove walls of the fire transfer groove 620 are inclined in the same direction, so that on one hand, the space of the fire transfer groove 620 is enlarged, the fire transfer efficiency is improved, and the flame can be smoothly transferred to the outer ring of the fire cover 40 from the ignition hole 470; on the other hand, pass the slope of fire groove 620 and set up for impurity such as hot water juice is difficult to get into and passes inside fire groove 620, avoids blockking up and passes fire groove 620, compares the fire groove 620 of passing of vertical setting among the prior art, and the effect of preventing blockking up of the fire groove 620 that passes that the slope set up is better.

Optionally, the slope angle of the walls of the fire transfer slots 620 is 40 °, 45 °, or 50 °. Thus, the efficiency of fire transfer can be improved, and the entrance of impurities such as cooking liquor into the interior of the fire transfer groove 620 can be avoided.

Optionally, the fire trough 620 may have a trough width that is adjustable. Alternatively, the fire transfer slots 620 may have slot widths of 0.7mm, 0.8mm, 0.9mm, etc.

Optionally, the fire chute 620 extends horizontally from the inside to the outside. Optionally, the fire transfer slots 620 extend obliquely from the inside to the outside. Alternatively, the fire transfer slots 620 may be arcuate or dog-leg shaped.

As shown in connection with fig. 8 and 9, in some embodiments, the ignition hole 470 includes: a third fire hole 4701, a fourth fire hole 4702 and a fifth fire hole 4703, wherein the fourth fire hole 4702 is disposed at both sides of the third fire hole 4701 and has a smaller diameter than the third fire hole 4701; the fifth fire holes 4703 are provided corresponding to the region between the third fire holes 4701 and the fourth fire holes 4702. The stable flame effect can be promoted through setting up third fire hole 4701, fourth fire hole 4702 and fifth fire hole 4703 to ignition hole 470, has great effect to promoting ignition stability, the stable fire performance of thermocouple under the super high pressure for example 3kpa operating mode.

In some embodiments, the fire lid 40 includes a top wall 410 and a fire transfer portion 60, the top wall 410 being annular; the fire transfer part 60 is arranged above the top wall 410, and comprises a base body 610 extending along the radial direction of the top wall 410 and a fire transfer groove 620 arranged on the base body 610, wherein the fire transfer groove 620 penetrates through the base body 610 along the inner direction and the outer direction, the opposite groove walls of the fire transfer groove 620 incline in the same direction, the inclination angle of the groove walls of the fire transfer groove 620 is 40 degrees, and the groove width of the fire transfer groove 620 is 0.7mm. Like this, pass the space of fire groove 620 great, pass the efficiency of fire and promote, and impurity such as hot water juice is difficult to get into and passes inside fire groove 620, avoids blockking up fire groove 620.

In some embodiments, the fire cover 40 further includes a side plate disposed below the top wall 410 and enclosing the top wall 410 to form a gas mixing chamber 440, a duct communicated with the fire transfer groove 620 is disposed inside the base 610, one end of the duct is communicated with the gas mixing chamber 440, and the other end of the duct is disposed inside the base 610 and is a blind end.

Referring to fig. 6 and 7, the fire cover 40 according to the embodiment of the present disclosure is further provided with a side plate, the side plate and the top wall 410 enclose a gas mixing chamber 440, and an air-fuel mixture flows through the gas mixing chamber 440. The inside of the base body 610 is provided with a pore passage communicated with the flame transfer groove 620, and the pore passage is communicated with the gas mixing chamber 440, so that the air-fuel mixture can enter the flame transfer groove 620 through the pore passage, and the flame transfer groove 620 can transfer flame. The end of the channel inside the body 610 is blind so that the channel is filled with the air/fuel mixture to facilitate the flow of air into the fire channel 620 at a flow rate.

Alternatively, the number of the ports is plural and is communicated with plural positions of the fire transfer grooves 620. Thus, the air-fuel mixture is uniformly distributed in the fire transfer groove 620, and the fire transfer performance of the fire transfer groove 620 is improved.

In some embodiments, the walls of the duct have openings that communicate with the fire transfer slots 620, the openings extending circumferentially around the walls.

The hole passage is provided with an opening extending along the circumferential direction on the passage wall, and the air-fuel mixture enters the hole passage from the air-fuel mixture chamber 440, flows out from the opening along the circumferential direction of the hole passage, and then enters the fire transfer groove 620, so that the air-fuel mixture is uniformly distributed in the fire transfer groove 620.

As shown in connection with fig. 6 and 7, in some embodiments, the side panel includes: an inner side plate 420, an outer side plate 430 and a spacer side plate 490, the inner side plate 420 being connected to the inner edge of the top wall 410 and extending downward; the outer panel 430 is connected to the outer edge of the top wall 410 and extends downward; the partition side plate 490 is disposed between the inner side plate 420 and the outer side plate 430, and is connected to the top wall 410, an inner air mixing chamber 4401 is formed between the partition side plate 490 and the inner side plate 420, and an outer air mixing chamber 4402 is formed between the partition side plate 490 and the outer side plate 430; the channels include inner channels and outer channels, the inner channels are arranged corresponding to the inner air mixing chamber 4401, and the outer channels are arranged corresponding to the outer air mixing chamber 4402, so that the fire transfer grooves 620 are communicated with the inner air mixing chamber 4401 and the outer air mixing chamber 4402.

The fire cover 40 provided by the embodiment of the present disclosure encloses an inner air mixing chamber 4401 and an outer air mixing chamber 4402 through the top wall 410, the inner side plate 420, the outer side plate 430 and the partition side plate 490, and air-fuel mixed gas flows through in the inner air mixing chamber 4401 and the outer air mixing chamber 4402, except that the inner air mixing chamber 4401 is communicated with the inner fire holes 460, and the outer air mixing chamber 4402 is communicated with the outer fire holes 450. The communication between the fire transfer grooves 620 and the inner and outer gas mixing chambers 4401 and 4402 is realized by arranging the ducts in the form of inner ducts and outer ducts, and communicating the inner gas mixing chamber 4401 with the inner ducts and the outer gas mixing chamber 4402 with the outer ducts. Like this, the air-fuel mixture homoenergetic in interior air-mixing chamber 4401 and the outer air-mixing chamber 4402 is in getting into the biography fire groove 620, makes and passes fire groove 620 radially have a plurality of air-fuel mixture inflow points, and like this, the air-fuel mixture distribution in passing fire groove 620 can be more even, when passing fire groove 620 and carrying out the flame transfer, can pass fire fast steadily.

As shown in fig. 5, in some embodiments, the inner cells include a first cell 630 and a second cell 640, the first cell 630 is closer to the inner plate 420 than the second cell 640, the cells of the first cell 630 are inclined toward the center of the circle, and the cells of the second cell 640 are inclined away from the center of the circle.

In this embodiment, the inner port channels are further arranged in the form of the first port channel 630 and the second port channel 640, and the inclination directions of the first port channel 630 and the second port channel 640 are arranged, so that the air-fuel mixture can be distributed relatively uniformly in the region of the fire transfer groove 620 corresponding to the inner air mixing chamber 4401 after flowing out from the first port channel 630 and the second port channel 640, which is favorable for uniform distribution of the air-fuel mixture in the fire transfer groove 620.

In some embodiments, the outer orifices include a third orifice 650 and a fourth orifice 660, and the orifices of the third orifice 650 and the fourth orifice 660 are each inclined away from the center of the circle.

In this embodiment, the outer port channels are further provided in the form of third port channels 650 and fourth port channels 660, and the inclination directions of the third port channels 650 and fourth port channels 660 are set so that the air-fuel mixture can be distributed relatively uniformly in the region of the fire transfer groove 620 corresponding to the outer air-fuel mixture chamber 4402 after flowing out from the first port channel 630 and the second port channel 640, which is favorable for uniform distribution of the air-fuel mixture in the fire transfer groove 620.

In some embodiments, the inner cells include a first cell 630 and a second cell 640, the first cell 630 being closer to the inner plate 420 than the second cell 640, the cells of the first cell 630 being inclined toward the center of the circle, the cells of the second cell 640 being inclined away from the center of the circle; the outer orifices include a third orifice 650 and a fourth orifice 660, and the orifices of the third orifice 650 and the fourth orifice 660 are inclined away from the center of the circle.

By adopting the fire cover 40 provided by the embodiment of the disclosure, the structure of the outer side pore canal and the inner side pore canal are combined, so that the distribution uniformity of the air-fuel mixture in the fire transfer groove 620 can be comprehensively improved, and the fire transfer effect of the fire transfer groove 620 is enhanced.

Alternatively, the first aperture 630, the second aperture 640, the third aperture 650, and the fourth aperture 660 may extend along a straight line or may extend along an arc.

In some embodiments, the fourth aperture 660 is closer to the outer panel 430 than the third aperture 650, and the fourth aperture 660 is at a smaller angle to the horizontal than the third aperture 650.

In this embodiment, the positional relationship between the third orifice 650 and the fourth orifice 660 is combined with the arrangement of the inclination angle, so that the air-fuel mixture can be distributed more rapidly and uniformly in the region of the fire transfer groove 620 corresponding to the outer air-mixing chamber 4402 after flowing out from the third orifice 650 and the fourth orifice 660.

Referring to fig. 7, an embodiment of the present disclosure provides a burner, which includes a burner 10 and a fire cover 40 provided in any one of the foregoing embodiments, and is disposed above the burner 10.

The burner adopts the fire cover 40 that the aforesaid embodiment provided, can make impurity such as the hot water juice that drops to the surperficial wall 410 of reaching the summit be difficult to get into and pass fire in the groove 620, can avoid passing fire in the groove 620 and be blockked up, guarantees to pass fire in the groove 620 and pass fire smoothly.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A fire lid, comprising:

a top wall in a ring shape;

pass fiery portion, set up in the roof top, including following the radial base member that extends of roof and set up in the biography fire groove of base member, pass fire groove runs through along inside and outside direction the base member.

2. The fire cover of claim 1, wherein the opposing walls of the fire transfer slots are co-inclined.

3. The fire cover of claim 1, wherein the base includes a vertical side surface, the notch of the fire transfer slot being disposed on the vertical side surface.

4. The fire cover according to claim 1, 2 or 3, further comprising a side plate disposed below the top wall and enclosing the top wall to form a gas mixing chamber, wherein a duct communicated with the fire transfer groove is disposed inside the base body, one end of the duct is communicated with the gas mixing chamber, and the other end of the duct is disposed inside the base body and is a blind end.

5. The fire cover according to claim 4, wherein the passage wall of the duct is provided with an opening communicating with the fire-transmitting groove, the opening extending in a circumferential direction of the passage wall.

6. The fire cover of claim 4, wherein the side panel comprises:

an inner side plate connected to an inner edge of the top wall and extending downward;

an outer panel connected to an outer edge of the top wall and extending downward;

the spacing side plate is arranged between the inner side plate and the outer side plate and connected with the top wall, an inner air mixing chamber is formed between the spacing side plate and the inner side plate, and an outer air mixing chamber is formed between the spacing side plate and the outer side plate;

the pore channels comprise inner pore channels and outer pore channels, the inner pore channels are arranged corresponding to the inner air mixing chamber, and the outer pore channels are arranged corresponding to the outer air mixing chamber, so that the fire transfer grooves are communicated with the inner air mixing chamber and the outer air mixing chamber.

7. The fire cover of claim 6 wherein the inner openings include a first opening and a second opening, the first opening being closer to the inner panel than the second opening, the first opening being inclined toward the center of the circle and the second opening being inclined away from the center of the circle.

8. The fire cover of claim 6 wherein the outer ports include third and fourth ports, the ports of the third and fourth ports each being inclined away from the center of the circle.

9. The fire cover of claim 8 wherein said fourth port is closer to said outer panel than said third port, said fourth port being angled less from horizontal than said third port.

10. A burner, comprising:

a furnace end;

the fire cover of any one of claims 1 to 9, disposed above the burner.

Images