CN219318434U - Outer ring fire cover and burner with same - Google Patents

Abstract

The utility model provides an outer ring fire cover and a combustor with the same. The outer ring fire cover comprises a fire cover body and a fire transmission part, wherein the fire cover body comprises a fire cover top wall, a fire cover inner side wall and a fire cover outer side wall, an outer ring air cavity is formed by surrounding the fire cover top wall, the fire transmission part is arranged on the fire cover top wall, a fire transmission cavity is arranged in the fire transmission part, a vent hole for communicating the fire transmission cavity with the outer ring air cavity is further arranged in the fire transmission part, a fire transmission groove for communicating the fire transmission cavity with the outside is arranged in the fire transmission part, and the fire transmission groove extends from the inner peripheral side of the fire cover body to the outer peripheral side. Therefore, the gas in the fire transferring cavity and the gas in the outer ring air cavity are relatively independent, the influence of the gas in the fire transferring cavity and the gas in the outer ring air cavity is smaller, and the fire transferring safety is better. The fire transferring cavity can play a better role in stabilizing pressure, so that the flow speed of gas flowing out of the fire transferring groove is more stable, and the conditions of flame separation, tempering and the like are avoided.

Description

Outer ring fire cover and burner with same

Technical Field

The utility model relates to the technical field of cooking appliances, in particular to an outer ring fire cover and a burner with the same.

Background

Currently, there are burners commonly found on household gas cookers, which generally comprise an outer ring fire cover and a central fire cover located in the center of the outer ring fire cover. The outer circumferences of the outer ring fire cover and the center fire cover are generally provided with fire holes, and the mixed gas of the fuel gas and the air flows out from the fire holes of the outer ring fire cover and the fire holes of the center fire cover and burns.

The flame is typically burned in the center flame cover and then conducted from the center flame cover to the outer ring flame cover. In order to facilitate the conduction of flame, a igniting groove is usually arranged on the top wall of the outer ring fire cover, and the flame at the central fire cover ignites the igniting groove and is transmitted to the fire hole of the outer ring fire cover through the igniting groove.

In this way, the mixed gas in the outer ring fire cover directly flows out through the igniting groove and ignites. The flow rate of the mixed gas at the ignition groove is difficult to control, and the conditions such as flame separation and tempering are easy to occur.

Disclosure of Invention

In order to at least partially solve the problems existing in the prior art, according to one aspect of the present utility model, there is provided an outer ring fire cover, comprising a fire cover body and a fire transfer part, wherein the fire cover body comprises a fire cover top wall, a fire cover inner side wall and a fire cover outer side wall, the fire cover top wall, the fire cover inner side wall and the fire cover outer side wall are surrounded to form an outer ring air cavity, the fire transfer part is arranged on the fire cover top wall, a fire transfer cavity is arranged in the fire transfer part, a vent hole for communicating the fire transfer cavity with the outer ring air cavity is also arranged on the fire transfer part, a fire transfer groove for communicating the fire transfer cavity with the outside is arranged on the fire transfer part, and the fire transfer groove extends from the inner peripheral side to the outer peripheral side of the fire cover body.

In the embodiment of the application, pass between fire chamber and the outer loop air cavity and separate each other, for among the prior art direct on the fire lid roof and set up the scheme of passing the fire groove, the gas in passing the fire chamber in the embodiment of this application is more independent relatively with the gas in the outer loop air cavity, and the influence that both produced each other is littleer, and the security of passing the fire is better. The fire transferring cavity is used as a relatively independent cavity, so that a better pressure stabilizing effect can be achieved, the flow speed of gas flowing out of the fire transferring groove is more stable, and the fire transferring effect is more stable. And the air pressure in the fire transferring cavity is more controllable, and the air pressure in the fire transferring cavity can be in a more proper range by reasonably setting the structure of the air vent, so that the condition that the air flow speed at the fire transferring groove is too fast or too slow can be effectively avoided, and further the conditions such as flame separation or tempering are avoided.

Illustratively, a rib is also disposed within the fire transfer cavity, the rib being located between the vent hole and the fire transfer slot, and at least one side of the rib being spaced apart from an inner wall of the fire transfer cavity to form a vent gap communicating between the vent hole and the fire transfer slot. The setting of keeping off the muscle can make the passageway that gas passed through longer, in this longer passageway, gas can produce more collisions with the chamber wall and the fender muscle in fire cavity, can make the better filling fire cavity of gas, makes the atmospheric pressure in the fire cavity of passing more stable.

Illustratively, at least two of the air outlet of the vent, the vent slot, and the air inlet of the fire transfer slot lie in different planes. Therefore, the circulation channel of the gas entering the fire transferring cavity is longer, and the stability of the gas pressure in the fire transferring cavity is further improved.

Illustratively, the rib is connected to an inner top wall of the firestop cavity and the vent gap is formed between the rib and an inner bottom wall of the firestop cavity. The rib is arranged in such a way, the structure is simpler, the blocking effect on the gas in the fire cavity is better, and the air pressure in the fire cavity can be balanced better.

Illustratively, the ribs are parallel to the fire propagation slot. The distance between the fire transmission groove and the blocking rib is the same, so that the ventilation quantity of each part is more balanced in the extending direction of the fire transmission groove, and the flame intensity of each part of the fire transmission groove is more approximate.

Illustratively, the ribs have uniform dimensions in the vertical direction. Therefore, the structure of the blocking rib is simpler, and the production cost is lower. And moreover, the air pressure at two sides of the blocking rib can be balanced better, and the stability of the overall air pressure in the fire transmission cavity is improved.

Illustratively, the fire transfer portion includes a fire transfer bottom wall, a fire transfer side wall extending upwardly from the fire transfer bottom wall, and a fire transfer cover plate covering a top of the fire transfer side wall, the fire transfer bottom wall, the fire transfer side wall, and the fire transfer cover plate enclosing to form a fire transfer cavity, the fire transfer cover plate being spaced apart from a top of at least one side of the fire transfer side wall and forming a fire transfer slot. Like this, the gas that passes in the fire chamber flows out and burns through the fire groove that passes that is located the fire side wall top, and gas and air can more abundant mix in passing the fire intracavity, and atmospheric pressure is more steady, and the burning is more abundant and stable, and it is better to pass the fire effect, and the structure setting is simpler reasonable.

Illustratively, the fire transfer cover plate is provided with downwardly extending bosses that are attached to mounting holes in the fire transfer bottom wall. By the arrangement, stable connection between the fire transmission cover plate and the fire transmission bottom wall can be realized. The installation of the Kong Duichuan fire cover plate has a limiting effect, and the assembly efficiency is improved.

Illustratively, in the case of a rib disposed within the fire transfer cavity, the rib is co-linear with the boss. Therefore, the structure is simpler, the convex column can form a part of the blocking rib, and the occupation of the space in the fire transferring cavity is reduced.

Illustratively, on the side of the fire transfer trough, a first ledge is provided on the fire transfer cover plate that extends beyond the fire transfer side wall of that side, the projection of the first ledge on the horizontal plane covering the fire transfer trough. The setting of first eaves can avoid passing the emergence of the condition that drops into the overflow in the fire groove better, improves the stability that passes the fire effect of fire portion.

Illustratively, a pilot hole is provided on a side of the fire transfer side wall facing the center of the outer ring fire cover, the pilot hole communicating the fire transfer cavity with the outside. Therefore, the distance between the ignition hole and the central fire cover is closer, the flame of the central fire cover can ignite the ignition hole first, and then the flame in the ignition hole ignites the fire transmission groove, so that the fire transmission effect of the fire transmission part is further ensured.

The fire transfer cover plate is provided with a second protruding eave extending beyond the fire transfer side wall of the side, and the projection of the second protruding eave on the horizontal plane covers the fire guiding hole. The second protruding eaves can effectively avoid overflowing liquid drops to the ignition holes, so that the ignition effect of the ignition holes is ensured, and further, the fire transmission effect of the fire transmission part is ensured.

Illustratively, the vent hole is adjacent to the pilot hole. Therefore, the gas flowing out of the vent hole can flow to the ignition hole at the first time, so that the ignition hole can be ignited more timely, and the ignition is more timely and efficient.

Illustratively, the fire transfer side wall includes: the fire transmission inner edge side wall and the fire transmission outer edge side wall extend upwards from the inner peripheral edge and the outer peripheral edge of the fire transmission bottom wall respectively, and the ignition holes are formed in the fire transmission inner edge side wall; and the first fire transfer radial wall and the second fire transfer radial wall extend upwards from the two side edges of the fire transfer bottom wall respectively and are connected between the fire transfer inner edge side wall and the fire transfer outer edge side wall. Therefore, the structure in the fire transmission cavity is simpler and the production cost is lower.

The inner edge side wall of the fire transfer has a first end connected with the first fire transfer radial wall, the fire transfer cover plate is spaced from the top of the first fire transfer radial wall to form a first slit, the fire transfer cover plate is spaced from the top of the first end to form a second slit, the fire transfer groove comprises the first slit and the second slit, and the distance between the second slit and the fire striking hole is smaller than the preset distance. Thus, the flame of the ignition hole can be introduced through the second slit, so that the fire transfer effect of the fire transfer groove is better.

Illustratively, the firedelivery outer-edge sidewall has a second end connected to the first firedelivery radial wall, and the firedelivery cover plate and the top of the second end are spaced apart to form a third slit, and the firedelivery slot further includes a third slit. The third slit is arranged, so that the width of the fire transfer groove, which is close to the side wall of the fire transfer outer edge, can be increased, the width of flame at the position is increased, and the fire transfer effect is better.

The inner ring fire cover is preferably arranged in a radially outer ring of the inner ring fire cover, and the inner ring fire cover is preferably arranged in a radially inner ring of the inner ring fire cover. The arrangement of the step surface ensures that the flame at the step surface has the same direction as the extending direction of the step surface, so that the main fire hole on the outer side wall of the fire cover can be better ignited.

Illustratively, the step surface is inclined in a direction from top to bottom toward the second flame propagation radial wall. In the vertical plane, the flame at the position of the step surface inclines towards the direction of one side of the opening of the fire transmission groove, burning of the fire transmission cover plate by the flame is reduced, waste of fuel gas is reduced, and the energy utilization efficiency is improved.

Illustratively, the inner fire transfer edge sidewall is located on a face of the inner fire cover sidewall. Therefore, the structure of the inner side wall of the fire cover is better utilized, on one hand, the volume of the fire transferring cavity is larger on the basis of not changing the whole size of the outer ring fire cover, on the other hand, the structure is simpler, and the production cost can be better reduced.

Illustratively, the fire passing peripheral sidewall is located on the face of the fire cover outer sidewall. Therefore, the structure of the outer side wall of the fire cover is better utilized, on one hand, the volume of the fire transferring cavity is larger on the basis of not changing the overall size of the outer ring fire cover, on the other hand, the structure is simpler, and the production cost can be better reduced.

Illustratively, the flame propagation bottom wall is lower than the flame cover top wall. Therefore, the volume of the fire transferring cavity can be further increased, and the air pressure in the fire transferring cavity is more stable. And, the space in the outer ring air cavity has been utilized better to the fire cavity that passes of setting like this, avoids outer ring fire lid to occupy too much space in vertical direction, and the structure setting is more reasonable.

Illustratively, a main fire hole communicating the outer ring air cavity and the outside is arranged on the outer side wall of the fire cover, a downward concave opening is arranged on the top wall of the fire cover, the opening is attached to the fire transmission part, and an opening formed on the outer surface of the outer side wall of the fire cover by the opening is circumscribed or overlapped with an air outlet hole formed on the outer surface of the outer side wall of the fire cover by the main fire hole. The flame in the flame transfer groove can be led to the main flame hole through the notch, so that the flame transfer effect of the flame transfer part is further improved.

Illustratively, the flame propagation groove is disposed parallel to the flame cover top wall. The fire transmission groove is parallel to the top wall of the fire cover, so that the height of the outer ring fire cover can be better controlled, and the occupation of space in the vertical direction is reduced while the flame firepower at each position of the fire transmission groove is uniform.

Illustratively, the firebox is located above and spaced apart from the firebox top wall. Thus, the flame in the flame transmission groove can be spaced from the top wall of the flame cover, the burning of the flame in the flame transmission groove to the top wall of the flame cover is reduced, the influence of the top wall of the flame cover to the intensity of the flame in the flame transmission groove is avoided, and the flame transmission effect of the flame transmission groove is ensured.

According to another aspect of the present utility model, there is also provided a burner. The burner comprises the distributor and any outer ring fire cover, wherein the outer ring fire cover is buckled on the distributor.

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 utility model are described in detail below with reference to the accompanying drawings.

Drawings

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

FIG. 1 is a perspective view of a burner according to an exemplary embodiment of the present utility model;

FIGS. 2-3 are perspective views of an outer ring fire cover at different viewing angles according to an exemplary embodiment of the present utility model;

FIG. 4 is a partial cross-sectional view of an outer ring fire cover according to an exemplary embodiment of the utility model;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

FIG. 6 is a perspective view of an outer ring fire cover according to an exemplary embodiment of the utility model, wherein the fire transfer cover plate is not shown;

FIG. 7 is an enlarged view of a portion B of FIG. 6; and

fig. 8-9 are perspective views of a firecap plate at different viewing angles according to one exemplary embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. an outer ring fire cover; 100. a fire cover body; 110. a fire cover top wall; 111. a notch; 120. the inner side wall of the fire cover; 130. the outer side wall of the fire cover; 140. a main fire hole; 190. an outer ring air cavity; 200. a fire transmission part; 201. a fire-transmitting bottom wall; 202. a mounting hole; 210. a vent hole; 212. an air outlet; 220. a blocking rib; 221. a convex column; 230. a fire transfer groove; 231. an air inlet; 232. a first slit; 233. a second slit; 240. a ventilation slit; 250. a fire transfer cover plate; 251. a first ledge; 252. a second ledge; 260. a fire transfer side wall; 261. a fire transfer inner edge side wall; 261a, a first end; 262. a fire transfer outer edge side wall; 262a, a second end; 262b, a body section; 262c, a step surface; 263. a first fire transfer radial wall; 264. a second fire transfer radial wall; 270. a fire hole; 290. a fire transferring cavity; 30. a center fire cover; 40. a fire divider.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model 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 utility model.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

For household gas cookers, the burner usually comprises an outer ring fire cover (also called a large fire cover) located on the outer ring and a central fire cover (also called a small fire cover) located in the center. The center fire cover and the outer ring fire cover can form at least two rings of flames, thereby providing multiple flame modes when the user uses the flame. Accordingly, the burner further includes a high fire distributor and a low fire distributor, and a high fire venturi and a low fire venturi. The small fire distributor is arranged at the center of the big fire distributor. The outer ring fire cover and the center fire cover are respectively covered on the big fire distributor and the small fire distributor. The big fire venturi and the small fire venturi are respectively connected to the big fire distributor and the small fire distributor. The big fire distributor and the outer ring fire cover are buckled to form a big fire air mixing chamber. The small fire distributor and the central fire cover are buckled to form a small fire air mixing chamber. The burner's ignition pin is typically positioned around the center fire cap to ignite the gas of the light fire plenum. The flame of the large flame mixing chamber is usually ignited by the flame of the central flame cover.

An outer ring fire cover of an embodiment of the present utility model will be described with reference to fig. 1 to 9.

The embodiment of the utility model provides an outer ring fire cover. Referring to fig. 1, 3 and 4 in combination, the outer ring fire cover 10 includes a fire cover body 100 and a fire transfer portion 200. The fire cover body 100 may include a fire cover top wall 110, a fire cover inner side wall 120, and a fire cover outer side wall 130. The fire cover top wall 110, the fire cover inner side wall 120, and the fire cover outer side wall 130 may be circumscribed to form an outer annular air cavity 190. The fire transfer part 200 may be disposed on the fire cover top wall 110, a fire transfer cavity 290 is disposed in the fire transfer part 200, and a vent hole 210 for communicating the fire transfer cavity 290 with the outer ring air cavity 190 may be disposed on the fire transfer part 200. Wherein, the outer ring air cavity 190 has a mixed gas of air and fuel gas therein, which enters into the fire transferring cavity 290 through the vent holes 210. The vent 210 may be provided on any chamber wall within the firetransfer chamber 290. The number of the ventilation holes 210 may be set according to actual circumstances. The firebox 290 is two spaced-apart chambers with respect to the outer annular air chamber 190, with some degree of communication between the two chambers being achieved through the vent holes 210. It will be appreciated that the air pressure within the firepassing chamber 290 may be controlled by the size, number of the vent holes 210. The fire transfer part 200 may be provided with a fire transfer groove 230 communicating the fire transfer chamber 290 with the outside, and the fire transfer groove 230 may extend from the inner circumferential side to the outer circumferential side of the fire cover body 100. The fire transfer groove 230 may extend along a radial direction of the fire cover body 100, or may extend along any other direction, so as to ensure that the fire transfer groove may extend from an inner peripheral side to an outer peripheral side. The fire transfer slot 230 may be linear or have a certain arc. In this way, the flame of the center fire cover 30 located at the center of the outer ring fire cover 10 is first transferred to one end of the flame transfer groove 230 near the inner peripheral side of the fire cover body 100. The flame transferring cavity 290 is provided with a mixed gas of fuel gas and air, the mixed gas can flow out through the flame transferring groove 230 and is ignited, and flame is transferred from one end of the flame transferring groove 230 near the inner peripheral side of the flame cover body 100 to one end near the outer peripheral side of the flame cover body 100 along the flame transferring groove 230, namely, the transfer process of flame from the central flame cover 30 to the outer ring flame cover 10 is realized.

In the embodiment of the application, the fire transferring cavity 290 and the outer ring air cavity 190 are mutually separated, and compared with the scheme that the fire transferring groove is directly formed in the top wall of the fire cover in the prior art, in the embodiment of the application, the gas in the fire transferring cavity 290 and the gas in the outer ring air cavity 190 are relatively independent, the influence of the gas in the fire transferring cavity 290 and the gas in the outer ring air cavity 190 is smaller, and the fire transferring safety is better. The fire transferring cavity 290 serves as a relatively independent cavity, and can play a better role in stabilizing pressure, so that the flow rate of the gas flowing out of the fire transferring groove 230 is more stable, and the fire transferring effect is more stable. In addition, the air pressure in the fire transferring cavity 290 is more controllable, and the air pressure in the fire transferring cavity 290 can be in a more proper range by reasonably setting the structure of the air vent 210, so that the condition that the air flow speed at the fire transferring groove 230 is too fast or too slow can be effectively avoided, and further the conditions such as flame separation or tempering are avoided.

For example, referring to fig. 5, ribs 220 may also be provided within the firestop cavity 290. The rib 220 may be located between the vent hole 210 and the fire passing groove 230, and at least one side of the rib 220 is spaced apart from the inner wall of the fire passing cavity 290 to form a vent gap 240 communicating between the vent hole 210 and the fire passing groove 230. It will be appreciated that the gas in the outer ring gas chamber 190 flows through the vent holes 210, the vent slits 240, and the flame propagation grooves 230 in this order, and flows out of the flame propagation grooves 230 and burns. The arrangement of the rib 220 can make the passage through which the gas passes longer, in this longer passage, the gas can collide with the wall of the fire transmission cavity 290 and the rib 220 more, so that the gas can fill the fire transmission cavity 290 better, and the air pressure in the fire transmission cavity 290 is more stable. The rib 220 may have various directions, and the inner wall spaced apart from the rib may be the fire-passing bottom wall 201, the fire-passing side wall 260 of the fire-passing cavity 290, or the inner top wall (the lower surface of the fire-passing cover plate 250) of the fire-passing cavity. Of course, in some embodiments, the fire transfer cavity may not be provided with a rib, and the gas enters the fire transfer cavity and only collides with the cavity wall of the fire transfer cavity, flows out through the fire transfer groove and burns.

Illustratively, referring to FIG. 5, the air outlet 212 of the vent 210, the vent aperture 240, and the fire transfer ₅ At least two of the air inlets 231 of the slot 230 lie in different planes. In this way, access can be made to

The flow path of the gas into the fire transfer chamber 290 is longer, further improving the stability of the gas pressure in the fire transfer chamber 290. In some embodiments, the air outlet of the vent, the vent slot, and the air inlet of the fire transfer slot may all lie in the same plane.

For example, referring to FIG. 5, the ribs 220 may be connected to the inner top wall of the firestop cavity 290, leading to ₀ An air gap 240 is formed between the rib 220 and the inner bottom wall of the firestop cavity 290. I.e. the ribs 220 can

Extending downwardly from the inner top wall and spaced from the inner bottom wall, the air outlet 212 of the air vent 210 and the vent slit 240 are coplanar. It will be appreciated that the inner top wall refers to the top wall within the firebox 290. In some embodiments, the inner top wall may be a bottom wall of the fire transfer cover plate 250. In the same way as described above,

the inner bottom wall refers to the bottom wall of the firebox 290. In some embodiments, the inner bottom wall may be a fire transfer bottom wall ₅ 201. The rib 220 is simpler in structure, better in blocking effect on the gas in the fire transferring cavity 290 and capable of balancing the gas pressure in the fire transferring cavity 290 better. In an embodiment not shown, the rib may be connected to the fire transfer side wall of one side of the fire transfer cavity, and the ventilation slit is formed between the rib and the fire transfer side wall of the other side of the fire transfer cavity. Alternatively, the rib may be connected to the inner bottom wall of the firestop cavity, with a vent gap formed between the rib and the inner top wall of the firestop cavity.

₀ For example, ribs 220 may be parallel to fire transfer slots 230. The distance between the flame propagation groove 230 and the rib 220 is the same, so that the ventilation amount is more uniform throughout the extending direction of the flame propagation groove 230, and the flame intensity is more approximate throughout the flame propagation groove 230. In an embodiment not shown, the ribs may be arranged obliquely to the fire transfer slot.

For example, referring to fig. 8 and 9, the ribs 220 may have a uniform size in the vertical direction. ₅ Specifically, the rib 220 may have a plate shape. In the horizontal direction, the height of the ribs 220 can be determined according to the actual situation

Setting the situation. For example, in the illustrated embodiment, the fire cover top wall 110 is sloped from inside to outside and upward in the radial direction of the fire cover body 100, and the height of the end of the rib 220 near the fire cover outer side wall 130 may be smaller relative to the height of the end thereof near the fire cover inner side wall 120. Thus, rib 220

The structure setting is simpler, and manufacturing cost is lower. And, both sides of the rib 220 can be better balanced ₀ And the air pressure in the fire-transmitting chamber 290. Or, the structure of the rib can be set according to the use requirement, for example, the rib can be gradually increased or decreased from top to bottom along the vertical direction.

Illustratively, referring to fig. 2 and 6 in combination, the firestop portion 200 includes a firestop bottom wall 201, a firestop side wall 260, and a firestop cover plate 250 covering the top of the firestop side wall 260. Firearms 260 may extend upwardly from firearms bottom wall 201. The firearms cover 250 may be positioned atop the firearms 260. Fire passing bottom wall 201, fire passing side walls 260, and fire passing cover plate 250 may enclose a fire passing cavity 290. The firearms cover plate 250 may be spaced apart from the top of at least one side of the firearms side wall 260 and form the firearms slot 230. Thus, the gas in the fire transferring cavity 290 flows out and burns through the fire transferring groove 230 positioned at the top of the fire transferring side wall 260, the gas and the air can be fully mixed in the fire transferring cavity 290, the air pressure is more stable, the combustion is more fully and stably, the fire transferring effect is better, and the structure setting is simpler and more reasonable. In an embodiment not shown, the fire transfer slot may be a through slot in the middle of the fire transfer sidewall.

Illustratively, the firestop cover plate 250 may be provided with downwardly extending bosses 221, and the bosses 221 may be connected to mounting holes 202 in the firestop bottom wall 201. Specifically, the boss 221 may be riveted to the mounting hole 202. The number of the protruding columns 221 may be set according to the use requirement, and the number of the mounting holes 202 may correspond to the number of the protruding columns 221. Illustratively, the number of the bosses 221 may be two and spaced apart from each other on the flame transfer cover 250. By this arrangement, a stable connection between the fire passing cover plate 250 and the fire passing bottom wall 201 can be achieved. The mounting holes 202 have a limiting effect on the installation of the fire cover plate 250, and the assembly efficiency is improved. In an embodiment not shown, the fire transfer cover plate may be mounted in any other way. Including but not limited to welding, fastener attachment.

For example, referring to fig. 8 and 9, in the case where the rib 220 is further provided in the fire transfer chamber 290, the rib 220 may be positioned on the same line as the boss 221. In this way, the structural arrangement is simpler, the boss 221 itself may form part of the rib 220, reducing the space occupation in the transfer chamber 290. Illustratively, the length of the boss 221 may be slightly longer than the rib 220. The rib 220 and the boss 221 may be integrally provided, so that the connection between the boss 221 and the rib 220 may be further reinforced. In an embodiment not shown, the studs and ribs may lie on different lines. For example, the stud may be located between the rib and the fire passing groove. Alternatively, the boss may be located between the rib and the vent hole.

For example, referring to fig. 4 and 5, on a side where the fire transfer groove 230 is located, a first ledge 251 extending beyond the fire transfer side wall 260 of the side may be provided on the fire transfer cover plate 250, and a projection of the first ledge 251 on a horizontal plane covers the fire transfer groove 230. During use, there may be spilled liquid drop to the fire transfer groove 230, and even cause blocking of the fire transfer groove 230, which affects the fire transfer effect of the fire transfer groove 230. The first ledge 251 can better avoid the condition of dripping overflow liquid in the fire transfer groove 230, and improve the stability of the fire transfer effect of the fire transfer part 200. It will be appreciated that only one fire transfer slot 230 is shown. When the fire transfer grooves are multiple, for example, two fire transfer grooves are oppositely arranged at the top of the fire transfer side wall, and the first convex eaves can be two and oppositely arranged at two sides of the fire transfer side wall. Alternatively, the fire transfer cover plate may be flush with the fire transfer side wall of the side where the fire transfer slot is located.

For example, referring to fig. 1 and 7 in combination, a pilot hole 270 may be provided on a side of the pilot sidewall 260 facing the center of the outer ring fire cover 10, and the pilot hole 270 may communicate the pilot cavity 290 with the outside. Illustratively, the pilot holes 270 may be two. Alternatively, the number of the pilot holes 270 may be set as desired, and when the number of the pilot holes 270 is plural (more than two), the plural pilot holes may be set at intervals in the circumferential direction of the outer ring fire cover. In this way, the distance between the ignition hole 270 and the center fire cover 30 is closer, the flame of the center fire cover 30 can first ignite the ignition hole 270, and then the flame in the ignition hole 270 ignites the fire transfer groove 230, so as to further ensure the fire transfer effect of the fire transfer part 200.

Illustratively, referring to FIG. 1, a second ledge 252 may be provided on the firestop cover plate 250 that extends beyond the firestop side wall 260 of that side. The projection of the second ledge 252 onto the horizontal surface covers the ignitable aperture 270. The pilot hole 270 is located on the side of the fire transfer sidewall 260 facing the center of the outer ring fire cover 10, and in use, spills may drip into the pilot hole 270, affecting its normal use. The second ledge 252 can effectively prevent the overflowing liquid from dripping into the ignition hole 270, so as to ensure the ignition effect of the ignition hole 270 and further ensure the fire transfer effect of the fire transfer portion 200. In an embodiment not shown, the second ledge may not be provided and the side of the fire transfer cover plate facing the centre of the outer ring fire cover may be flush with the inner side wall of the fire cover.

Illustratively, the vent holes 210 may be adjacent to the pilot holes 270. Adjacent is understood to mean that the distance between the two is smaller than a predetermined length. Thus, the gas flowing out of the vent hole 210 can flow to the igniting hole 270 at the first time, so that the igniting hole 270 can be ignited more timely, and the igniting is more timely and efficient. Of course, the vent holes may be provided at any other location depending on the use requirements.

Illustratively, referring to fig. 7, the firearms 260 may include a fireinner edge sidewall 261, a fireouter edge sidewall 262, a first firearms radial wall 263, and a second firearms radial wall 264. The inner and outer flame propagation side walls 261 and 262 may extend upward from inner and outer peripheral edges of the inner flame propagation bottom wall 201, respectively, and the pilot holes 270 may be provided on the inner flame propagation side walls 261. The first and second fire transfer radial walls 263 and 264 may extend upward from both side edges of the fire transfer bottom wall 201 and connect between the fire transfer inner edge side wall 261 and the fire transfer outer edge side wall 262, respectively. Both the first flame propagation radial wall 263 and the second flame propagation radial wall 264 may be parallel to each other. The first and second flame transfer radial walls 263, 264 may extend substantially in the radial direction of the outer ring flame cover, i.e. they may extend in the radial direction of the outer ring flame cover or may have a certain deviation from the radial direction of the outer ring flame cover. In this way, the structural arrangement in the fire transfer cavity 290 is simpler and the production cost is lower. In an embodiment not shown, the firearms can be provided in any other regular or irregular shape.

For example, with continued reference to fig. 7, the firefly inner edge side wall 261 can have a first end 261a connected with the first firefly radial wall 263, and the firefly cover plate 250 can be spaced from the top of the first firefly radial wall 263 to form a first slit 232. The top of the fireloading cover plate 250 and the first end 261a may be spaced apart to form a second slit 233, and the fireloading slot 230 may include a first slit 232 and a second slit 233. The interval between the second slits 233 and the pilot hole 270 may be smaller than a predetermined distance. In this way, the flames of the ignition holes 270 may be introduced through the second slits 233, so that the fire transfer effect of the fire transfer grooves 230 is better. In some embodiments, the second slit may not be provided, and the fire transfer groove may be only an elongated through groove.

Illustratively, referring to FIG. 7, the firetransfer outer-edge side wall 262 may have a second end 262a connected to the first firetransfer radial wall 263, with the firetransfer cover plate 250 and the top of the second end 262a being spaced apart to form a third slit 234, and the firetransfer slot 230 further includes the third slit 234. The third slit 234 can increase the width of the flame transfer groove 230 near the side wall 262 of the flame transfer outer edge, and the flame width is increased, so that the flame transfer effect is better.

Illustratively, the flame propagation outer edge sidewall 262 may further have a body section 262b connected between the second end portion 262a and the second flame propagation radial wall 264, a top surface of the body section 262b being higher than a top surface of the second end portion 262a, a step surface 262c being connected between the top surface of the body section 262b and the top surface of the second end portion 262a, wherein the step surface 262c may be inclined toward the first flame propagation radial wall 263 in a radially outward direction from the outer ring flame cover. The body section 262b may be in abutment with the fire transfer cover plate 25. The step surface 262c is provided so that the flame at the position has the same direction as the extending direction of the step surface 262c (refer to MN in fig. 7), and the main fire hole 140 on the outer side wall 130 of the fire cover can be more preferably ignited.

Illustratively, the stepped surface 262c may be inclined in a top-down direction toward the second flame propagation radial wall 264. In this way, in the vertical plane, the flame at the position of the step surface 262c is inclined towards the direction of one side of the opening of the fire transfer groove 230, so that the burning of the fire transfer cover plate 250 by the flame is reduced, the waste of fuel gas is reduced, and the energy utilization efficiency is improved.

Illustratively, referring to FIG. 7, the inner flame propagation edge sidewall 261 may be located on the face of the inner flame cover sidewall 120. It will be appreciated that a portion of the inner fire cover side wall 120 forms the inner fire transfer edge side wall 261. In this way, the structure of the inner side wall 120 of the fire cover is better utilized, on one hand, the volume of the fire transferring cavity 290 can be larger on the basis of not changing the overall size of the outer ring fire cover, on the other hand, the structure is simpler, and the production cost can be better reduced. In some embodiments, the inner fire transfer edge sidewall may be located inboard of the inner fire cover sidewall.

Illustratively, the flame transfer peripheral sidewall 262 may be located on the face of the flame cover outer sidewall 130. It will be appreciated that a portion of the outer side wall 130 of the fire cover forms the outer fire transfer edge side wall 262. In this way, the structure of the outer side wall 130 of the fire cover is better utilized, on one hand, the volume of the fire transferring cavity 290 can be larger on the basis of not changing the overall size of the outer ring fire cover, on the other hand, the structure is simpler, and the production cost can be better reduced. In some embodiments, the firearms outer-edge side wall may be located inboard of the firearms outer-edge side wall.

Illustratively, referring to fig. 5, the firestop bottom wall 201 may be lower than the firestop top wall 110. Thus, the volume of the fire transferring chamber 290 can be further increased, so that the air pressure in the fire transferring chamber 290 is more stable. In addition, the space in the outer ring air cavity 190 is better utilized by the fire transferring cavity 290 arranged in the way, the outer ring fire cover is prevented from occupying too much space in the vertical direction, and the structural arrangement is more reasonable. In some embodiments, the firearms bottom wall may be flush with the firecap top wall.

Illustratively, the fire cover outer sidewall 130 may be provided with a main fire hole 140 communicating the outer annular air cavity 190 with the outside. The fire cover top wall 110 may be provided with a downward concave opening 111, the opening 111 may be attached to the fire transmitting portion 200, and an opening formed by the opening 111 on the outer surface of the fire cover outer side wall 130 may be circumscribed or overlapped with an air outlet hole formed by the main fire hole 140 on the outer surface of the fire cover outer side wall 130. In this way, the flame in the flame propagation groove 230 can be guided to the main flame hole 140 through the notch 111, and the flame propagation effect of the flame propagation portion 200 is further improved.

Illustratively, referring to FIG. 2, the flame propagation groove 230 is disposed parallel to the flame cover top wall 110. The fire cover top wall may be disposed parallel to the horizontal plane or, as in the illustrated embodiment, the fire cover top wall 110 may be disposed obliquely from the inside to the outside and upward in the radial direction of the outer ring fire cover 10. The flame transfer groove 230 is parallel to the flame cover top wall 110, so that the height of the outer ring flame cover 10 can be better controlled, and the occupation of space in the vertical direction is reduced while the flame firepower at the position of the flame transfer groove 230 is uniform. Of course, in some embodiments, the extending direction of the fire transfer slot may be set according to actual circumstances, and it may be disposed obliquely at a predetermined angle to the top wall of the fire cover.

For example, referring to fig. 4, the firestop slot 230 can be located above the firestop top wall 110 and spaced apart from the firestop top wall 110. In this way, the flame in the flame transfer slot 230 can be spaced apart from the flame cover top wall 110, so that the burning of the flame in the flame transfer slot 230 to the flame cover top wall 110 is reduced, the influence of the flame cover top wall 110 to the flame in the flame transfer slot 230 is avoided, and the flame transfer effect of the flame transfer slot 230 is ensured. In an embodiment not shown, the firearms may be coplanar with the firecap top wall. Alternatively, the height of the fire transfer slot may be lower than the height of the fire cover top wall.

According to another aspect of the present utility model, there is also provided a burner having a distributor 40 and any of the outer ring fire covers described above, the outer ring fire cover 10 being adapted to be snapped onto the distributor 40. A large fire mixing chamber is formed between the outer ring fire cover 10 and the distributor 40. Because the outer ring fire cover 10 adopts the technical scheme of any one of the embodiments, the burner has at least the beneficial effects brought by the technical scheme of the embodiment, and is not described in detail herein. In addition, the burner may include a venturi (not shown), a center fire cap 30, and the like. The venturi and center cap 30 may have various structures that may be present or may occur in the future and are not intended to limit the scope of the present utility model.

In the description of the present utility model, 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 utility model 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 utility model; 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 "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features illustrated 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 of "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 in accordance with the present 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 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 present application described herein may be implemented in sequences other than those illustrated or described herein.

The present utility model 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 utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (21)

1. The utility model provides an outer ring fire lid, includes fire lid body and biography fire portion, the fire lid body includes fire lid roof, fire lid inside wall and fire lid lateral wall, fire lid roof the fire lid inside wall with the fire lid lateral wall surrounds and forms outer loop air cavity, it is in to pass fire portion setting on the fire lid roof, a serial communication port, be provided with in the biography fire portion and pass the fire chamber, still be provided with on the biography fire portion will pass the fire chamber with the air vent of outer loop air cavity intercommunication, pass and be provided with the intercommunication in the fire portion pass fire groove of fire chamber and outside, pass the fire groove follow the inner peripheral side of fire lid body extends to outer peripheral side.

2. The outer ring fire cover of claim 1 wherein a rib is further disposed within the fire transfer cavity, the rib being located between the vent hole and the fire transfer groove, and at least one side of the rib being spaced from an inner wall of the fire transfer cavity to form a vent gap communicating between the vent hole and the fire transfer groove.

3. The outer ring fire cover of claim 2 wherein at least two of the air outlet of the vent, the vent slit, and the air inlet of the fire transfer slot lie in different planes.

4. The outer ring fire cover according to claim 2, wherein,

the blocking rib is connected to the inner top wall of the fire transmission cavity, and the ventilation gap is formed between the blocking rib and the inner bottom wall of the fire transmission cavity; and/or

The blocking ribs are parallel to the fire transmission grooves; and/or

The ribs have uniform dimensions in the vertical direction.

5. The outer ring fire cover of claim 2, wherein the fire transfer portion comprises a fire transfer bottom wall, a fire transfer side wall extending upwards from the fire transfer bottom wall, and a fire transfer cover plate covering the top of the fire transfer side wall, the fire transfer bottom wall, the fire transfer side wall and the fire transfer cover plate surround to form the fire transfer cavity, the fire transfer cover plate is spaced from the top of at least one side of the fire transfer side wall and forms the fire transfer groove, a downward extending boss is arranged on the fire transfer cover plate, the boss is connected to a mounting hole on the fire transfer bottom wall, and the retaining rib and the boss are positioned on the same straight line.

6. The outer ring fire cover of any one of claims 1-4 wherein the fire transfer portion comprises a fire transfer bottom wall, a fire transfer side wall extending upwardly from the fire transfer bottom wall, and a fire transfer cover plate covering the top of the fire transfer side wall, the fire transfer bottom wall, the fire transfer side wall, and the fire transfer cover plate circumscribing to form the fire transfer cavity, the fire transfer cover plate being spaced from the top of at least one side of the fire transfer side wall and forming the fire transfer groove.

7. The outer ring fire cover of claim 6 wherein said fire transfer cover plate is provided with downwardly extending bosses which are connected to mounting holes in said fire transfer bottom wall.

8. The outer ring fire cover of claim 6 wherein on a side of the fire transfer trough, a first ledge is provided on the fire transfer cover plate extending beyond the fire transfer side wall of the side, the projection of the first ledge on a horizontal plane covering the fire transfer trough.

9. The outer ring fire cover according to claim 6, wherein a fire igniting hole is provided on a side of the fire transferring side wall facing a center of the outer ring fire cover, the fire igniting hole communicating the fire transferring chamber and an outside.

10. The outer ring fire cover of claim 9 wherein the fire transfer cover plate is provided with a second ledge extending beyond the fire transfer side wall of the side, the projection of the second ledge on a horizontal plane covering the pilot hole.

11. The outer ring fire cover of claim 9 wherein the vent hole is adjacent the pilot hole.

12. The outer ring fire cover of claim 9 wherein the fire transfer sidewall comprises:

the fire transmission inner edge side wall and the fire transmission outer edge side wall extend upwards from the inner peripheral edge and the outer peripheral edge of the fire transmission bottom wall respectively, and the ignition holes are formed in the fire transmission inner edge side wall; and

the first fire transfer radial wall and the second fire transfer radial wall extend upwards from two side edges of the fire transfer bottom wall respectively and are connected between the fire transfer inner edge side wall and the fire transfer outer edge side wall.

13. The outer annular fire cover of claim 12 wherein said inner fire transfer rim side wall has a first end connected to said first fire transfer radial wall,

the fire transfer cover plate is spaced from the top of the first fire transfer radial wall to form a first slit, the fire transfer cover plate is spaced from the top of the first end to form a second slit, the fire transfer groove comprises the first slit and the second slit, and the distance between the second slit and the ignition hole is smaller than a preset distance.

14. The outer annular fire cover of claim 12 wherein the fire transfer peripheral side wall has a second end connected to the first fire transfer radial wall, the fire transfer cover plate and the top of the second end being spaced apart to form a third slit, the fire transfer slot further comprising the third slit.

15. The outer ring fire cover of claim 14 wherein the fire transfer peripheral side wall further has a body section connected between the second end and the second fire transfer radial wall, the body section having a top surface higher than the top surface of the second end, a step surface connected between the top surface of the body section and the top surface of the second end, wherein

The step surface is inclined toward the first fire transfer radial wall in a direction radially outward from the outer ring fire cover; and/or

The step surface is inclined toward the second flame propagation radial wall in a direction from top to bottom.

16. The outer ring fire cover of claim 12 wherein,

the fire transmission inner edge side wall is positioned on the surface where the inner side wall of the fire cover is positioned; and/or

The fire transmission outer edge side wall is positioned on the surface where the fire cover outer side wall is positioned.

17. The outer ring fire cover of claim 5 wherein said fire passing bottom wall is lower than said fire cover top wall.

18. The outer ring fire cover according to claim 1, wherein a main fire hole for communicating the outer ring air cavity and the outside is arranged on the outer side wall of the fire cover, a notch recessed downwards is arranged on the top wall of the fire cover, the notch is attached to the fire transmission part, and an opening formed on the outer surface of the outer side wall of the fire cover by the notch is circumscribed or overlapped with an air outlet hole formed on the outer surface of the outer side wall of the fire cover by the main fire hole.

19. The outer ring fire cover of claim 1 wherein the fire transfer slots are disposed in parallel with the fire cover top wall.

20. The outer ring fire cover of claim 1 wherein the fire transfer slots are located above and spaced apart from the fire cover top wall.

21. A burner comprising a distributor and an outer ring fire cover as claimed in any one of claims 1 to 20, the outer ring fire cover being snapped onto the distributor.

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