CN218599720U - Fire cover and combustor with same - Google Patents

Abstract

The utility model provides a fire lid and combustor that has this fire lid. The fire lid includes the inside wall, roof and lateral wall, and the roof is connected between inside wall and lateral wall and is closed and enclose formation gas mixing chamber, is provided with the flame stabilizing fire groove of intercommunication outside and gas mixing chamber on the lateral wall, is provided with a plurality of fire holes of intercommunication outside and gas mixing chamber on lateral wall and/or the roof, and flame stabilizing fire groove is independent each other with a plurality of fire holes of going out, and flame stabilizing fire groove is located the below of a plurality of fire holes and extends along the circumference direction of fire lid. Have the embodiment of the utility model provides a fire lid, steady flame fire groove compare prior art's steady flame hole not only processing technology simple, and the processing degree of difficulty is little, compares steady flame fire hole moreover, and steady flame fire groove uniformity on the width is also higher, and like this, the gas just can be discharged with more even mode on the circumferential direction of fire lid, and consequently steady flame fire groove is better to the steady flame effect of the flame of the play fire hole department of its top.

Description

Fire cover and combustor with same

Technical Field

The utility model relates to a domestic gas cooking utensils's technical field specifically, relates to a fire lid and the combustor that has this fire lid.

Background

In the technical field of household gas cookers, the technical level is also continuously improved.

The existing fire cover is provided with an upper row of fire holes and a lower row of fire holes, wherein the upper fire holes are main fire holes and the lower fire holes are flame stabilizing fire holes. The flame burning at the main fire hole is mainly used to provide a heat value. The flame burning at the flame stabilizing fire hole is mainly used for providing auxiliary combustion effect for the flame burning at the main fire hole, so that the flame burning at the main fire hole is more stable.

However, in current fire lid, because the thickness of fire lid is less, the application conventionality processing mode of punching hardly satisfies the performance requirement for steady flame fire hole processing uniformity is relatively poor, and steady flame effect is unstable.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art at least partially, according to the utility model discloses an aspect provides a fire lid, including the inside wall, roof and lateral wall, the roof is connected between inside wall and lateral wall and is enclosed and form the gas-mixing chamber, is provided with the flame stabilizing fire groove of intercommunication outside and gas-mixing chamber on the lateral wall, be provided with a plurality of fire holes of intercommunication outside and gas-mixing chamber on lateral wall and/or the roof, flame stabilizing fire groove and a plurality of fire holes are independent each other, flame stabilizing fire groove is located the below of a plurality of fire holes and extends along the circumferential direction of fire lid.

Therefore, it can be known to have the utility model discloses the fire lid that provides, the steady flame fire groove compares that prior art's steady flame fire hole is not only simple process, and the processing degree of difficulty is little, compares steady flame fire hole moreover, and the uniformity of steady flame fire groove on the width is also higher, and like this, the gas just can be discharged with more even mode on the circumferential direction of fire lid, and consequently steady flame fire groove is better to the steady flame effect of the flame of the play fire hole department of its top. In addition, because the steady flame fire groove can with a plurality of fire outlet corresponding settings, so compare the steady flame fire hole among the prior art from the gas of steady flame fire inslot exhaust continuity better, especially in the position department between two adjacent main fire holes, also can discharge the gas that is used for steady flame, can form continuous and stable pulling effect to the flame that the fire outlet department located, improve steady flame effect, be favorable to improving the firepower.

Illustratively, the flame holding flame slot has a continuous annular configuration at the fire slot exit on the outer side of the outer sidewall. Have the embodiment of the utility model provides a fire lid because the fire trough export in steady flame fire trough is continuous loop configuration, so can form continuous steady flame on the lateral wall, it is better to the steady flame effect of the flame of a plurality of fire holes in top and two adjacent fire holes between the department.

Exemplarily, the flame stabilizing fire trough is a plurality of and arranges along the circumferential direction of fire lid, and the fire trough entry of a plurality of flame stabilizing fire troughs on the medial surface of lateral wall is spaced apart along the circumferential direction of fire lid and is set up to form the spliced pole between adjacent flame stabilizing fire trough, the spliced pole is spaced apart with the lateral surface of lateral wall, so that the fire trough export of a plurality of flame stabilizing fire troughs connects into the loop configuration. The fire cover with the connecting column is simple in structure and easy to realize.

Illustratively, two adjacent connecting columns respectively have a first side surface and a second side surface, the first side surface and the second side surface are oppositely arranged, the projections of the first side surface and the second side surface in the predetermined plane are positioned on the circumference of an imaginary circle in the predetermined plane, and the central axis of the imaginary circle is coplanar with the central axis of the fire cover. From this, the fire lid that has this setting can form the spliced pole in steady flame fire groove through simple mode, and it easily realizes.

Illustratively, the flame holding flame grooves are parallel to the predetermined plane. The device is simple in structure and easy to process.

Illustratively, the included angle between the central axis of the virtual circle and the central axis of the fire lid is between-20 and 20. The flame stabilizing fire trough has the effects that the depth length of the flame stabilizing fire trough can be changed by changing the included angle between the central axis of the virtual circle and the central axis of the fire cover, so that the path length of the fuel gas passing through the flame stabilizing fire trough can be changed, and the resistance of the fuel gas discharged from the flame stabilizing fire trough is changed. According to the total amount of the fuel gas in the gas mixing chamber, a user can select different flame stabilizing fire grooves to meet the function of flame stabilization.

Illustratively, the ratio of the radius of the imaginary circle to the radius of the fire lid is between 0.35 and 1.54. When the ratio of the radius of the virtual circle to the radius of the fire cover is 0.35-1.54, the number of the connecting columns can be ensured to be 6-12, so that the strength of the fire cover is ensured, and the air outlet stability of the flame stabilizing fire trough is also ensured.

Illustratively, the center-to-center distance of the virtual circle and the fire cover is D, the radius of the fire cover is R, and the radius of the virtual circle is R, (D-R)/R is between 0.58 and 0.85. Therefore, the size of the connecting column can be ensured not to be too large to influence the air outlet amount of the flame stabilizing fire slot.

Illustratively, each of the plurality of connecting posts is located between two adjacent fire holes along the circumferential direction of the fire cover. Like this, can be so that in the below department of going out the fire hole, avoid influencing the air output of steady flame fire groove because of being provided with the spliced pole, and then produce the influence to the steady flame effect of going out the fire hole.

Illustratively, the plurality of connecting columns are evenly distributed along the circumferential direction of the fire cover. The equipartition setting of spliced pole can be so that the fire lid is more even at the deformation of all directions after the heating deformation to also can make giving vent to anger of steady flame fire groove more even, steady flame effect is also more stable.

Illustratively, each of the plurality of connecting studs has an inner surface facing the plenum, the inner surface being coplanar with the inner side surface of the outer sidewall. Like this, the processing of being convenient for on the one hand, on the other hand can also reduce in the gas mixing chamber because the arch or the sunken influence that produces the air current flow, improves the steady flame fire groove stability of giving vent to anger, improves steady flame effect.

Illustratively, the ratio of the number of the plurality of flame exit holes to the number of flame holding grooves is between 5 and 12. The flame outlet holes and the flame stabilizing grooves with the above quantity ratio can ensure the combustion efficiency and improve the flame stabilizing effect.

Illustratively, the inner side wall is provided with a fire hole for communicating the outside with the gas mixing chamber. The function of the ignition hole is to guide the flame on the small fire cover to the big fire cover, so that the gas discharged from the big fire cover can be quickly ignited.

Exemplarily, still be provided with the ignition groove on the fire lid, the ignition groove extends to the lateral wall and communicates outside and gas mixing chamber from the inside wall via the roof, and wherein, the first end and the ignition hole of ignition groove are adjacent, and the second end and a plurality of some in going out the fire hole of ignition groove are adjacent. The function of the ignition groove is that the fuel gas at the ignition hole can be shunted, the air outlet speed at the ignition hole is reduced, and therefore the ignition efficiency of the ignition hole is improved, and the ignition success rate is improved.

Illustratively, the ignition hole is two, and the first end in ignition groove is located between two ignition holes, and the second end in ignition groove is located between two adjacent fire outlet and not communicate with the flame stabilizing groove. The ignition groove with the arrangement has the advantages that the first end is adjacent to the ignition hole, and the second end is adjacent to the fire outlet hole, so that the ignition groove can further improve the ignition success rate.

Illustratively, the ignition slot extends in a radial direction of the fire lid. Therefore, the processing difficulty of the ignition groove can be reduced.

Illustratively, the fire cover is a big fire cover, and the ignition hole is configured to have an axis perpendicular to an axis of the fire hole of the small fire cover. Therefore, the flame of the small fire cover can be introduced into the ignition hole at the shortest distance, and the ignition success rate is improved.

Illustratively, the inner side wall includes a first inner side wall extending in a vertical direction and a second inner side wall inclined outward from a top end of the first inner side wall and connected to an inner edge of the top wall, and the ignition hole is provided at a connection between the first inner side wall and the second inner side wall. The ignition hole can be arranged at the connection transition part which is a round angle, thereby being convenient for processing the ignition hole.

Illustratively, the outer side wall includes a first outer side wall extending in a vertical direction and a second outer side wall inclined inward from a top end of the first outer side wall and connected to an outer edge of the top wall, the flame holding groove is provided on the first outer side wall, and the fire outlet of the plurality of fire outlet holes is provided on the second outer side wall. Through setting up first lateral wall and second lateral wall, can set up the inclination of first lateral wall and second lateral wall respectively according to the needs in play fire hole and steady flame fire groove to satisfy the play burner in a fire hole and the inclination in steady flame fire groove, convenient to use and processing.

Illustratively, the fire lid is a stainless steel fire lid. The stainless steel fire cover has the advantages of light weight, small processing difficulty and high product yield compared with the existing copper fire cover.

According to another aspect of the present invention, there is provided a burner, comprising a burner head and any one of the fire caps, wherein the fire cap is fastened to the top of the burner head.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention 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.

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

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a front view of a fire cover according to an exemplary embodiment of the present invention;

FIG. 2 is a top view of the fire lid of FIG. 1;

FIG. 3 is a perspective view of the fire cover of FIG. 1;

FIG. 4 is a cross-sectional view of the fire cover of FIG. 1;

FIG. 5 is an enlarged view of a portion of the fire lid of FIG. 4;

6-8 are top views of fire covers according to various exemplary embodiments of the present invention;

fig. 9 is a top view of a burner according to an exemplary embodiment of the present invention;

fig. 10 is a cross-sectional view of the burner of fig. 9.

Wherein the figures include the following reference numerals:

10. a fire cover; 100. an inner sidewall; 101. a first inner side wall; 102. a second inner side wall; 110. a firing hole; 120. a fire-leading groove; 121. a first end; 122. a second end; 200. a top wall; 300. an outer sidewall; 301. a first outer side wall; 302. a second exterior sidewall; 310. a fire outlet; 320. a flame stabilizing fire trough; 330. connecting columns; 331. a first side surface; 332. a second side surface; 333. an inner surface; 400. a gas mixing chamber; 20. a furnace end.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In view of the need to improve the flame holding effect of the prior art, according to one aspect of the present invention, a fire cover 10 is provided, as shown in fig. 1-5. The fire cover can be a big fire cover, and if needed, the small fire cover can also adopt the structure. As shown in fig. 3-5, the fire lid 10 may include an inner side wall 100, a top wall 200, and an outer side wall 300. The top wall 200 may be connected between the inner sidewall 100 and the outer sidewall 300 and enclose to form a plenum 400. The fire cover 10 is further provided with a flame holding groove 320 and a plurality of fire holes 310. The flame holding fire slot 320 and the plurality of fire holes 310 may communicate the outside with the gas mixing chamber 400. The flame holding fire grooves 320 and the plurality of fire holes 310 are independent of each other. Wherein the flame holding groove 320 may be provided on the outer sidewall 300. A plurality of fire holes 310 may be provided on one or more of the outer sidewall 300 and the top wall 200. Illustratively, the plurality of fire holes 310 may be disposed on both the outer sidewall 300 and the top wall 200. In the embodiment where a plurality of fire holes 310 are simultaneously formed on the outer sidewall 300 and the top wall 200, the case where the fire holes 310 are formed at the junction between the outer sidewall 300 and the top wall 200 as shown in fig. 1 so that the fire holes are simultaneously formed on the outer sidewall 300 and the top wall 200 may be included, and the case where a part of the fire holes 310 are formed on the outer sidewall 300 and a part of the fire holes 310 are formed on the top wall 200 may also be included. The flame holding fire grooves 320 may be located below the plurality of fire exit holes 310 and extend in a circumferential direction of the fire cover 10.

In the embodiment shown in fig. 1-5, each of the plurality of fire holes 310 may be a circular hole, an elliptical hole, or other various shaped holes. The flame holding fire slots 320 may be elongated slots that are formed below the plurality of fire holes 310. Taking the fire cover 10 in a buckled state in a use state as an example, as shown in fig. 1 and 4, the plurality of fire holes 310 may be distributed on the outer sidewall 300 in a horizontal plane, and it is understood that the plurality of fire holes 310 may also be distributed on the outer sidewall 300 at an included angle with the horizontal plane. The flame holding groove 320 may be a continuous elongated groove or a plurality of spaced apart slots. The flame holding grooves 320 may be formed by cutting grooves on the outer sidewall 300, or the flame cover may be split up and down, and the flame holding grooves 320 may be formed by gaps spaced apart by the split up and down portions. In the embodiment of the flame holding groove formed by cutting the opening, a connecting column described below is required to be formed inside the flame holding groove so that the flame cover is a single piece. In the embodiment of the flame holding fire groove formed by combining the upper and lower split parts of the fire cover, the flame holding fire groove is used as a boundary, and the upper and lower parts can be fixed through respective supporting pieces. Of course, it is understood that the flame holding grooves 320 may be formed in various other ways, which will not be described in detail.

Therefore, it can be known to have the utility model discloses fire lid 10 that the embodiment provided, not only processing technology is simple for the steady flame fire hole of comparing prior art in steady flame fire groove 320, and the processing degree of difficulty is little, compares steady flame fire hole moreover, and the uniformity of steady flame fire groove 320 on the width is also higher, and like this, the gas just can be discharged with more even mode on the circumferential direction of fire lid, and consequently steady flame fire groove 320 is better to the steady flame effect of the flame of the play fire hole 310 department of its top. In addition, because the flame stabilizing fire slot 320 can be arranged corresponding to the plurality of fire holes 310, the gas discharged from the flame stabilizing fire slot 320 has better continuity compared with the flame stabilizing fire holes in the prior art, especially the gas for stabilizing the flame can be discharged at the position between two adjacent main fire holes 310, the flame at the fire holes 310 can be continuously and stably pulled, the flame stabilizing effect is improved, and the improvement of the fire power is facilitated.

Further, the width of the flame holding fire slot 320 may be smaller than the inner diameter of the fire outlet 310, so as to prevent the gas from flowing out of the flame holding fire slot too much to compete for the gas discharged from the fire outlet.

The ratio of the width of the flame holding groove 320 to the inner diameter of the fire outlet hole 310 is between 3/13 and 4/11. The fire cover 10 with the ratio can reasonably distribute the gas output at the fire outlet 310 and the flame stabilizing fire slot 320 better, so that the combustion gas quantity discharged from the flame stabilizing fire slot 320 can play a flame stabilizing effect on the flame at the fire outlet 310 on the premise of not competing for the gas with the fire outlet 310 too much.

Preferably, the inner diameter of the fire hole 310 is between 2.2mm and 2.6 mm. The width of the flame holding groove 320 is between 0.6mm and 0.8 mm. The fire holes 310 having such a size can satisfy thermal efficiency of flames at the fire holes 310. The flame stabilizing fire trough 320 with the size can play a flame stabilizing effect, reduce the processing difficulty and improve the success rate of products.

Illustratively, the flame holding grooves 320 have a uniform width along the gas outlet direction. In this way, it can be ensured that the gas output of the flame holding fire groove 320 is uniform in all directions, thereby ensuring the flame holding effect in all directions.

Illustratively, the opening direction of the flame holding grooves 320 may be at an angle α of 25 ° -45 ° with respect to the central axis of the plurality of flame exit holes 310, as illustrated in fig. 5. The included angle between the central axis of the fire outlet 310 and the horizontal plane is 25-45 degrees, so that the combustion efficiency of the fire outlet 310 is high, and the cooker and the like are suitable to be placed above the fire outlet.

Illustratively, the distance A between the plurality of fire holes 310 and the flame holding grooves 320 along the central axis of the fire cover 10 may be between 1mm and 3mm on the outer side surface of the outer sidewall 300. That is, in the vertical direction as shown in fig. 5, the distance from the lower surface of the fire outlet 310 to the flame holding groove 320 is between 1mm and 3 mm. When the distance is less than 1mm, the flame at the flame stabilizing fire groove 320 and the flame at the fire outlet 310 are liable to compete for oxygen for combustion, so that the flame at the fire outlet 310 is insufficiently combusted to generate carbon monoxide CO. When the distance is more than 3mm, the flame of the flame holding groove 320 is too far away from the fire outlet 310, and the flame holding groove 320 cannot play a role of holding flame for the flame at the fire outlet 310.

Illustratively, the central axes of the plurality of fire holes 310 extend obliquely upward along the gas outlet direction thereof. Thus, the cooker placed on the fire cover 10 is heated.

Illustratively, outer sidewall 300 may include a first outer sidewall 301 and a second outer sidewall 302. As shown in fig. 5, first exterior side wall 301 may extend in a vertical direction. The second outer sidewall 302 may be inwardly inclined from the top end of the first outer sidewall 301 and connected to the outer edge of the top wall 200. The flame holding fire groove 320 may be provided on the first outer sidewall 301. The fire outlets of the plurality of fire holes 310 may be provided on the second outer sidewall 302. Through setting up first lateral wall 301 and second lateral wall 302, can set up the inclination of first lateral wall 301 and second lateral wall 302 respectively according to the needs of going out fire hole 310 and flame stabilizing fire groove 320 to satisfy the play burner of going out fire hole 310 and the inclination of flame stabilizing fire groove 320, be convenient for use and processing.

Illustratively, the central axes of the plurality of fire holes 310 may be angled at 80-100 degrees from the second outer sidewall 302. The angle can reduce the processing difficulty of the fire hole 310. Preferably, the central axis of the fire exit hole 310 is at a right angle to the second exterior sidewall 302.

Illustratively, the flame holding flame grooves 320 are in a continuous annular configuration at the flame groove exit on the outer side of the outer sidewall 300. In the embodiment that the flame holding fire groove 320 is formed by combining the upper and lower split parts, the upper and lower parts of the outer sidewall 300 may be arranged as concentric rings with equal radius, and a continuous annular fire groove outlet is formed by the gaps formed by the upper and lower parts. In embodiments where the attachment post is disposed within the flame holding groove 320, the attachment post may be disposed inside the flame holding groove 320 and spaced apart from the outer side surface of the outer sidewall 300, thereby forming a continuous annular structure when viewed from the outer side. Of course, it is understood that the fire slot outlets of the flame holding fire slots 320 may be formed in a continuous annular configuration in a variety of ways, and will not be described in detail. Have the embodiment of the utility model provides a fire lid 10 because the fire groove export of steady flame fire groove is continuous loop configuration, so can form continuous steady flame on lateral wall 300, and the steady flame effect to the flame of a plurality of fire holes 310 of top and two adjacent fire holes 310 department is better.

Illustratively, the flame holding fire grooves 320 may be plural and arranged along a circumferential direction of the fire cover. A plurality of flame holding grooves 320 are provided at intervals in the circumferential direction of the fire cap 10 at fire groove entrances on the inner side surface of the outer sidewall 300 to form connection posts 330 between the adjacent flame holding grooves 320. The connecting post 330 may be spaced apart from the outer side surface of the outer sidewall 300 such that the fire slot outlets of the plurality of flame holding fire slots 320 are connected in an annular configuration, as shown in fig. 3. The cross-section of the connecting column 330 in the plane of the flame holding groove 320 may have various shapes, such as a circle, a square, or other various shapes. The connecting column 330 is used to connect the top and bottom surfaces of the flame holding groove 320, so that the outer sidewall is a unitary structure. Wherein the connecting column 330 may be formed as a portion left by cutting the groove on the outer sidewall 300. The outer sidewall 300 may also be formed by casting, with the flame holding grooves 320 and the connecting posts 330 being formed during the casting process. The fire cover 10 with the connecting column 330 has simple structure and is easy to realize.

Illustratively, as shown in fig. 6, two adjacent connecting posts 330 have a first side surface 331 and a second side surface 332, respectively. The first and second side surfaces 331 and 332 are oppositely disposed. The projections of the first and second side surfaces 331 and 332 in the predetermined plane may be located on the circumference of an imaginary circle in the predetermined plane. In fig. 6-8, the generally triangular portion having the cross-sectional lines is the connecting post 330. The central axis of the virtual circle may be coplanar with the central axis of the fire lid 10. In embodiments where the flame holding grooves 320 are formed by cutting slots, the virtual circle may be the outer profile of the saw blade. When the flame holding grooves are formed by the blade cutting, the first and second side surfaces 331 and 332 on the adjacent two connecting posts 330 will form an arc shape corresponding to the outer contour of the blade. The size of the attachment post 330 is related to the size of the diameter of the saw blade and the depth of cut. Thus, the fire cover 10 having this arrangement can form the connection post 330 in the flame holding fire groove 320 in a simple manner, which is easy to implement.

Illustratively, the flame holding grooves 320 may be parallel to a predetermined plane. The predetermined plane may be a plane parallel to the horizontal plane when the fire lid is in normal use.

Illustratively, the included angle between the central axis of the imaginary circle and the central axis of the fire cover 10 is-20 ° to 20 °, that is, the direction in which the flame holding grooves 320 extend from the inside of the fire cover to the outside of the fire cover on the outer sidewall 300 may be inclined upward, may be inclined downward, or may be parallel to the horizontal plane. The function of the flame stabilizing groove is that the depth length of the flame stabilizing groove 320 can be changed by changing the included angle between the central axis of the virtual circle and the central axis of the fire cover 10, so that the path length of the gas in the process of passing through the flame stabilizing groove 320 can be changed, and the resistance of the gas in the process of being discharged from the flame stabilizing groove 320 is changed. According to the total amount of the fuel gas in the gas mixing chamber, the user can select different flame holding grooves 320 to satisfy the function of flame holding.

Illustratively, the ratio of the radius of the imaginary circle to the radius of the fire lid 10 is between 0.35 and 1.54. In the embodiment shown in fig. 6, the number of the virtual circles is 10, and the ratio of the radius of the virtual circle to the radius of the fire lid 10 is 0.35. In the embodiment shown in fig. 8, the number of virtual circles is 6, and the ratio of the radius of the virtual circle to the radius of the fire cap 10 is 1.54. When the ratio of the radius of the virtual circle to the radius of the fire cover 10 is between 0.35 and 1.54, the number of the connecting posts 330 can be ensured to be between 6 and 12, thereby ensuring the strength of the fire cover and the stability of the air outlet of the flame-stabilizing fire slot 320.

Illustratively, the center-to-center distance of the virtual circle from the fire lid 10 is D, the radius of the fire lid is R, and the radius of the virtual circle is R, (D-R)/R is between 0.58 and 0.85. Thus, it is ensured that the size of the connecting post 330 is not so large as to affect the amount of the flame holding groove.

Illustratively, each of the plurality of connecting posts 330 may be located between two adjacent fire holes along the circumferential direction of the fire cover 10. That is, the coupling post 330 is disposed to cross the fire hole 310 as viewed from a direction perpendicular to the predetermined plane of the fire cover 10. Therefore, the gas outlet quantity of the flame stabilizing fire slot 320 is prevented from being influenced by the connecting column 330 at the lower part of the fire outlet 310, and further the flame stabilizing effect of the fire outlet 310 is prevented from being influenced.

Illustratively, the plurality of connecting posts 330 may be evenly distributed along the circumferential direction of the fire lid 10. The equipartition setting of spliced pole 330 can make the deformation of fire lid 10 in all directions after the heating deformation more even to also can make giving vent to anger of flame stabilizing fire groove 320 more even, the flame stabilizing effect is also more stable.

Illustratively, each of the plurality of connecting posts 330 has an inner surface facing the plenum that is coplanar with an inner side surface of the outer sidewall 300. That is, the inner side surface of the outer sidewall 300 of the fire lid 10 is smooth when viewed from the inside of the fire lid, and the connecting column 330 does not generate a protrusion or a depression on the inner side surface of the outer sidewall 300. Like this, on the one hand is convenient for process, and on the other hand can also reduce in the gas mixing chamber 400 because the influence that the arch or the sunken air current that produce produced flows, improves the stability of giving vent to anger of steady flame fire groove 320, improves steady flame effect.

Illustratively, the ratio of the number of the plurality of fire holes 310 to the number of the flame holding grooves 320 may be between 5 and 12. In the embodiment shown in fig. 6-8, the number of fire holes 310 may be between 60-72 and the number of flame holding grooves 320 may be between 6-12. The flame outlet holes 310 and the flame holding grooves 320 having the above number ratio can improve the effect of holding flame while ensuring the combustion efficiency.

Illustratively, the inner sidewall 100 may be provided with a pilot hole 110 communicating the outside and the gas mixing chamber 400, as shown in fig. 2. The shape of the ignition hole 110 may be circular, directional, or any other shape. Taking the ignition hole 110 arranged on the big fire cover as an example, because the gas discharged from the small fire cover is ignited when the stove is ignited, the ignition hole 110 can guide the flame on the small fire cover to the big fire cover, so that the gas discharged from the big fire cover can be ignited quickly.

Illustratively, a fire slot 120 may also be provided on the fire cover 10. The ignition slot 120 may extend from the inner sidewall 100 to the outer sidewall 300 via the top wall 200 and communicate the outside with the plenum 400. Wherein the first end 121 of the ignition slot 120 may be adjacent to the ignition hole 110. The second end 122 of the ignition slot 120 may be adjacent to a portion of the plurality of fire holes 310. In the embodiment shown in fig. 2, the ignition slot 120 may be a long slot hole provided on the fire cover without dividing the fire cover 10. The slotted holes may be formed by blade cutting. The ignition groove 120 is used for shunting the fuel gas at the ignition hole, so that the gas outlet speed at the ignition hole 110 is reduced, the ignition efficiency of the ignition hole 110 is improved, and the ignition success rate is improved.

Illustratively, the inner diameter of the ignition hole 110 may be between 2.2mm and 2.6 mm. The width of the ignition slot 120 is between 0.6mm and 0.8 mm. The ignition hole 110 with the arrangement can meet the ignition requirement by the air flow velocity of the gas discharged from the ignition hole 110, improve the ignition success rate and accelerate the ignition speed. The ignition groove 120 with the arrangement can play a certain shunting role for the gas in the ignition hole 110, so that the air flow speed of the discharged gas at the ignition hole 110 can meet the ignition requirement, the flame at the ignition hole is far away from the fire cover due to overhigh air flow speed, and the ignition is difficult due to overlow air flow speed.

Illustratively, the ignition hole 110 may be two. The first end 121 of the ignition slot 120 may be located between two ignition holes 110. The second end 122 of the ignition slot 120 may be located between two adjacent fire holes 310 and not communicate with the flame holding slot 320. With the ignition slot 120 of this arrangement, since the first end 121 is adjacent to the ignition hole 110 and the second end is adjacent to the fire outlet 310, the ignition slot 120 can further improve the success rate of ignition.

Illustratively, the ignition groove 120 may extend in a radial direction of the fire cover 10. Thus, the difficulty of processing the ignition groove 120 can be reduced.

Illustratively, the fire lid 10 may be a large fire lid. The ignition hole 110 may be configured such that its axis is perpendicular to the axis of the small fire lid fire exit hole. The small fire lid is not shown but one skilled in the art will appreciate that the small fire lid is located at the center of the large fire lid. The shape formed by the gas discharged from the small fire lid is generally an inverted cone shape or an inverted truncated cone shape with the central axis of the small fire lid as an axis. The ignition hole 110 may be perpendicular to the outer circumferential surface of the inverted cone or the inverted frustum. Thus, the ignition hole 110 can introduce the flame of the small fire cover in the shortest distance, and the ignition success rate is improved.

Illustratively, as shown in fig. 5, the inner sidewall 100 may include a first inner sidewall 101 and a second inner sidewall 102. The first inner sidewall 101 may extend in a vertical direction. The top end of the second inner side wall 102 may be inclined outwardly and connected to the inner edge of the top wall 200. The ignition hole 110 may be provided at a connection between the first inner sidewall 101 and the second inner sidewall 102. In the embodiment shown in fig. 3 and 5, the first inner sidewall 100 may be a polyline segment. The first inner side wall 101 and the second inner side wall 102 are in a continuous transition with a round angle. The ignition hole 110 may be disposed at a connection transition portion having a rounded corner, thereby facilitating the processing of the ignition hole 110.

Illustratively, the fire cover 10 may be a stainless steel fire cover. The stainless steel fire cover has the advantages of light weight, small processing difficulty and high product yield compared with the existing copper fire cover.

According to another aspect of the present invention, there is also provided a burner, as shown in fig. 9-10. The burner may include a burner head 20 and a burner cap 10 of any of the above. The fire cover 10 may be snapped on top of the burner 20. A gas passage is provided in the burner 20. The gas may enter the gas mixing chamber 400 through the gas passage and be discharged from the fire holes 310 and the flame holding grooves 320.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional terms such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

For ease of description, relative terms of regions, such as "over … …", "over … …", "over … …", "over", etc., may be used herein to describe the regional positional relationship of one or more components or features to other components or features shown in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the figures is turned over in its entirety, elements "above" or "over" other elements or features would include elements "below" or "beneath" other elements or features. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which 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 according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application 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 is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (14)

1. The utility model provides a fire lid, its characterized in that, includes inside wall, roof and lateral wall, the roof is connected the inside wall with between the lateral wall and enclose and form the gas-mixing chamber, be provided with on the lateral wall communicate outside with the steady flame fire groove of gas-mixing chamber, the lateral wall and/or be provided with on the roof communicate outside with a plurality of fire holes of gas-mixing chamber, steady flame fire groove with a plurality of fire holes are independent each other, steady flame fire groove is located a plurality of below of fire holes and along the circumferential direction of fire lid extends.

2. The fire cover of claim 1, wherein the flame holding fire slot has a continuous annular configuration at the fire slot exit on the outer side surface of the outer sidewall.

3. The fire cover of claim 2, wherein the flame holding fire grooves are a plurality of and arranged along the circumferential direction of the fire cover, and a plurality of flame holding fire grooves are arranged on the inner side surface of the outer side wall along the circumferential direction of the fire cover at intervals so as to form a connecting column between the adjacent flame holding fire grooves, wherein the connecting column is spaced from the outer side surface of the outer side wall so that the fire groove outlets of the plurality of flame holding fire grooves are connected into the annular structure.

4. Fire lid according to claim 3, characterised in that two adjacent connecting posts have a first side surface and a second side surface, respectively, which are oppositely arranged, the projections of the first side surface and the second side surface in a predetermined plane are located on the circumference of an imaginary circle in the predetermined plane, the central axis of the imaginary circle being coplanar with the central axis of the fire lid.

5. The fire cover of claim 4, wherein the flame holding fire slot is parallel to the predetermined plane.

6. The fire cover of claim 4,

the included angle between the central axis of the virtual circle and the central axis of the fire cover is-20 degrees; and/or

The ratio of the radius of the virtual circle to the radius of the fire cover is 0.35-1.54; and/or

The center distance between the virtual circle and the fire cover is D, the radius of the fire cover is R, and the radius of the virtual circle is R, (D-R)/R is between 0.58 and 0.85.

7. The fire cover of claim 4,

each connecting column is located between two adjacent fire holes along the circumferential direction of the fire cover; and/or

The connecting columns are uniformly distributed along the circumferential direction of the fire cover; and/or

Each of the plurality of connecting columns has an inner surface facing the plenum, the inner surface being coplanar with the inner side surface of the outer sidewall; and/or

The number ratio of the plurality of fire outlet holes to the flame stabilizing grooves is 5-12.

8. The fire cover according to claim 1, wherein the inner sidewall is provided with a fire hole communicating the outside with the gas mixing chamber.

9. The fire cover of claim 8, further comprising a fire initiation slot extending from the inner sidewall to the outer sidewall through the top wall and communicating with the gas mixing chamber, wherein a first end of the fire initiation slot is adjacent to the fire initiation hole and a second end of the fire initiation slot is adjacent to a portion of the plurality of fire exit holes.

10. The fire cover of claim 9,

the number of the ignition holes is two, the first end of each ignition groove is located between the two ignition holes, and the second end of each ignition groove is located between the two adjacent ignition holes and is not communicated with the flame stabilizing fire groove; and/or

The ignition groove extends along a radial direction of the fire cover.

11. The fire lid of claim 8, wherein the fire lid is a large fire lid, and the ignition hole is configured such that its axis is perpendicular to the axis of the small fire lid fire outlet.

12. The fire cover of claim 8,

the inner side wall includes a first inner side wall extending in a vertical direction and a second inner side wall inclined outwardly from a top end of the first inner side wall and connected to an inner edge of the top wall, and the ignition hole is provided at a connection between the first inner side wall and the second inner side wall; and/or

The outer side wall comprises a first outer side wall extending along the vertical direction and a second outer side wall inclining inwards from the top end of the first outer side wall and connected to the outer edge of the top wall, the flame stabilizing fire groove is arranged on the first outer side wall, and fire outlets of the fire outlets are arranged on the second outer side wall.

13. The fire lid of claim 1 wherein said fire lid is a stainless steel fire lid.

14. A burner comprising a burner and a fire cover as claimed in any one of claims 1 to 13, said fire cover snap-fitted to the top of said burner.

Images