Outer ring fire cover, combustor and gas stove

Abstract

The utility model provides an outer ring fire cover, burner and gas stove, the outer ring fire cover comprises a fire cover body, the fire cover body is provided with an inner ring, a fire outlet ring and a top wall connected between the inner ring and the fire outlet ring, the inner ring is provided with a plurality of fire transmission holes, the fire outlet ring is provided with a plurality of fire outlet holes along the circumferential direction, and the fire outlet ring is provided with a plurality of fire holes. The top wall is divided into a near gas inlet part and a far gas inlet part according to the distance from the gas inlet position, at least two fire transfer grooves are formed in the far gas inlet part in the radial direction, each fire transfer groove is provided with a first end and a second end, the first end is connected to one fire transfer hole, and the second end is connected to one fire outlet hole. According to the burner, after the fire transfer holes are ignited, flames can ignite the fire outlet ring through the fire transfer grooves, and due to the fact that the fire transfer grooves are formed in the portion, far away from the air inlet, of the top wall of the burner cap, gas entering from the air inlet position can be fully mixed with air, and therefore the flame stabilizing function is achieved; and the problems of flame separation, yellow flame and unsmooth fire transfer easily caused by too close distance between the fire transfer groove and the air inlet position are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to an outer ring fire cover, a burner and a gas stove. Background Art

[0002] The existing fire cover includes an outer ring fire cover and an inner ring fire cover. In order to improve the combustion efficiency of the gas, a fire transfer groove is opened on the outer ring fire cover, and one end of the fire transfer groove is connected to the fire transfer hole on the inner ring of the outer ring fire cover. After the fire transfer hole is ignited, the flame ignites the fire outlet ring of the outer ring fire cover through the fire transfer groove to form an annular fire wall. However, since some fire transfer grooves are too close to the air inlet of the fire distributor seat, the gas entering from the air inlet fails to be fully mixed with the air before reaching the fire transfer groove, resulting in flame separation and yellow flame problems at the fire transfer groove, and even poor fire transfer problems. Utility Model Content

[0003] In order to at least partially solve the problems existing in the prior art, according to one aspect of the utility model, an outer ring fire cover is provided, and the technical solution is as follows.

[0004] The outer ring fire cover includes a fire cover body, which has an inner ring, a fire outlet ring and a top wall connected between the inner ring and the fire outlet ring. The inner ring is provided with a plurality of fire transfer holes, the fire outlet ring is provided with a plurality of fire outlet holes along the circumferential direction, and the top wall is divided into a near air intake part and a far air intake part according to the distance from the air intake position. The far air intake part is provided with at least two fire transfer grooves along the radial direction, and each fire transfer groove has a first end and a second end, the first end is connected to one of the fire transfer holes, and the second end is connected to one of the fire outlet holes.

[0005] With the outer ring fire cover of the utility model, after the fire transfer hole is ignited, the flame can ignite the fire outlet ring through the fire transfer groove. Since the fire transfer groove is arranged at the far air inlet part of the top wall of the fire cover, the fuel gas entering from the air inlet position can be fully mixed with the air, thereby achieving the flame stabilization function, avoiding the problem of flame separation, yellow flame and poor fire transfer that may occur when the fire transfer groove is too close to the air inlet position.

[0006] For example, the inner ring has a diameter D1, the fire ring has a diameter D2, and when D2-D1≥40, there are at least three fire transfer grooves. This arrangement ensures the reliability of fire transfer and avoids flameout during the fire transfer process due to the fire transfer distance being too far.

[0007] Exemplarily, there is an angle α between two adjacent fire transfer grooves, and α is 60° to 90°. When the angle α between two adjacent fire transfer grooves is within this range, the reliability of fire transfer is guaranteed, and the flame failure phenomenon during the fire transfer process is avoided due to the excessively large angle between the two adjacent fire transfer grooves, which makes the fire transfer distance too far, and the collision of the flames overflowing from the two adjacent fire transfer grooves is avoided due to the excessively small angle between the two adjacent fire transfer grooves, which makes the fire transfer distance too close.

[0008] Exemplarily, the width of the fire transfer groove is 0.5 mm to 0.7 mm. When the width of the fire transfer groove is within this range, the fire transfer effect of the fire transfer groove is good.

[0009] Exemplarily, the plurality of fire holes include a plurality of first fire holes and a plurality of second fire holes, the first fire holes and the second fire holes are arranged at intervals in the vertical direction, and the second end is connected to one of the second fire holes. In this arrangement, compared with the second end being connected to one of the first fire holes, since the second fire hole is arranged below the first fire hole in the vertical direction and the second end is connected to one of the second fire holes, it is possible to avoid the flame at the position of the fire transmission slot being too high, resulting in the phenomenon that the ejected flame forms a yellow flame.

[0010] Exemplarily, the plurality of first fire holes are divided into a plurality of first hole groups, and a first interval is provided between two adjacent first hole groups on the fire outlet ring; the plurality of second fire holes are divided into a plurality of second hole groups, and a second interval is provided between two adjacent second hole groups on the fire outlet ring, and the second interval is larger than the first interval. In this way, by providing an interval between two adjacent hole groups, the phenomenon of the flame ejected from the fire outlet hole burning the corner piece on the pot support during use is avoided.

[0011] Exemplarily, the second fire holes located at the side in the second hole group are defined as side fire holes, and the two adjacent side fire holes in two adjacent second hole groups are connected by a fire starter groove arranged along the circumferential direction. In this way, the two adjacent side fire holes in two adjacent second hole groups are connected by the fire starter groove arranged along the circumferential direction, which improves the fire transmission efficiency, and the height of the flame ejected from the fire starter groove is lower than the height of the flame ejected from the fire outlet hole, thereby effectively avoiding the phenomenon of flame burning the upper corner piece of the pot support during use.

[0012] Exemplarily, the first interval is 18 mm to 22 mm. When the first interval is within this range, the flame ejected from the first fire hole can be prevented from burning the upper corner piece of the pot support, and the fire can be transferred between the first fire hole and the ignition groove, thereby improving the fire transfer efficiency.

[0013] Exemplarily, the second interval is 25 mm to 31 mm. When the second interval is within this range, the flame ejected from the second fire hole can be prevented from burning the upper corner piece of the pot support, and the adjacent side fire holes in two adjacent second hole groups with the second interval are connected by the ignition groove arranged in the circumferential direction, which can improve the efficiency of fire transmission.

[0014] Exemplarily, the outer ring fire cover has a mounting plane, and an angle β is formed between the center line of the fire transfer hole and a first plane perpendicular to the mounting plane, and β is 30° to 60°. When the angle β between the center line of the fire transfer hole and the first plane perpendicular to the mounting plane is within this range, the success rate of fire transfer in the fire transfer slot connected to the fire transfer hole can be improved, and the efficiency of fire transfer in the fire transfer slot can be improved.

[0015] Exemplarily, the fire ring extends with an extension wall in a direction away from the inner ring, and the extension wall is not higher than the fire ring. With such an arrangement, the radius of the fire ring will not be too large, thus avoiding the phenomenon of burning the handle of the pot or the kitchen utensils placed around the gas stove during cooking; the extension wall is not higher than the fire ring, so that during cooking, when the liquid overflowing from the pot drips onto the fire cover body, the liquid can flow outward along the extension wall until it flows out of the outer ring fire cover, thus avoiding the liquid flowing along the fire cover body to the root of the burner with the outer ring fire cover, causing the burner to go out or ignite poorly, and it is convenient for users to clean the overflowed liquid.

[0016] Exemplarily, the outer ring fire cover has a mounting plane, and the extension wall is parallel to the mounting plane. With such a configuration, when the outer ring fire cover is mounted on the fire distributor seat of the burner, a gas mixing space can be formed between the extension wall and the fire distributor seat, and a gas mixture of gas and air can form a cyclone when entering the gas mixing space, so that the gas and air can be fully mixed, thereby making the gas burn more fully.

[0017] Exemplarily, the extension wall has a length D, and the length D is 7 mm to 20 mm. When the length D of the extension wall is within this range, a gas mixing space with this length range can be formed between the extension wall and the flame divider seat, so that the mixture of gas and air entering the gas mixing space can form a cyclone, so that the gas and air can be mixed more fully, and then the gas can burn more fully.

[0018] Exemplarily, the outer ring fire cover has a mounting plane, and the extension wall is arranged at an inclination relative to the mounting plane. With such an arrangement, on the one hand, the extension wall can guide the liquid overflowing from the pot, so that the liquid can flow out of the outer ring of the outer ring fire cover. In this way, it can not only prevent the liquid from flowing to the root of the burner, causing problems such as flameout or poor ignition of the burner, but also prevent the liquid from being retained on the extension wall, making it difficult for the user to clean the outer ring fire cover; on the other hand, when the outer ring fire cover is installed on the fire distributor seat of the burner, a gas mixing space can be formed between the extension wall and the fire distributor seat, and a mixture of gas and air can form a cyclone when entering the gas mixing space. The inclined arrangement of the extension wall can increase the gas mixing space, thereby increasing the cyclone formed by the mixture of gas and air, so that the gas and air can be mixed more fully, thereby making the gas burn more fully.

[0019] Exemplarily, the orthographic projection of the extension wall on the installation plane has a length D, and the length D is 7 mm to 20 mm. When the length D of the extension wall is within this range, a gas mixing space with this length range can be formed between the extension wall and the flame divider seat, whereby a gas mixture of gas and air can form a cyclone when entering the gas mixing space, so that the gas and air can be mixed more fully, thereby making the gas burn more fully.

[0020] Exemplarily, an angle γ is formed between the extension wall and the mounting plane, and the angle γ is 10° to 30°. With such a configuration, on the one hand, the angle γ is within this range, which can ensure that the extension wall has a guiding effect on the liquid overflowing from the pot, thereby preventing the liquid from flowing to the root of the burner, causing problems such as flameout or poor ignition of the burner, and preventing the liquid from being retained on the extension wall, making it difficult for the user to clean the outer ring fire cover; on the other hand, the angle α formed between the extension wall and the mounting plane increases the gas mixing space, thereby increasing the cyclone formed by the mixture of gas and air, so that the gas and air can be mixed more fully, thereby making the gas burn more fully.

[0021] According to another aspect of the utility model, a burner is provided, the burner comprising a fire distribution seat and the outer ring fire cover as described above, the outer ring fire cover is arranged on the fire distribution seat, the fire distribution seat has an air inlet, and the air inlet forms an air inlet position. The burner of the utility model comprises the outer ring fire cover as described above, and since the outer ring fire cover has the beneficial effects as described above, the burner comprising the outer ring fire cover as described above must also have the beneficial effects as described above.

[0022] According to another aspect of the utility model, a gas stove is provided, which includes a stove bottom shell and the burner as described above, and the burner is arranged on the stove bottom shell. The gas stove of the utility model includes the outer ring fire cover as described above. Since the burner as described above has the beneficial effects as described above, the gas stove including the burner as described above must also have the beneficial effects as described above.

[0023] A series of simplified concepts are introduced in the utility model content, which will be further described in detail in the detailed implementation section. The utility model content section does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0024] The advantages and features of the present invention are described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the implementation of the present invention and its description, and are used to explain the principle of the present invention. In the drawings,

[0026] Figure 1a A three-dimensional diagram (I) of an outer ring fire cover and a fire distributor seat combination according to an exemplary embodiment of the present invention;

[0027] Figure 1b A three-dimensional diagram (II) of an outer ring fire cover and a fire distributor seat combination according to an exemplary embodiment of the present invention;

[0028] Figure 2 for Figure 1a The front view of the outer ring fire cover and the fire distributor seat combination shown;

[0029] Figure 3 for Figure 2 AA section view in;

[0030] Figure 4 for Figure 1a A top view of the outer ring fire cover shown in ;

[0031] Figure 5 for Figure 4 A magnified view of A in FIG.

[0032] Figure 6 for Figure 4 A cross-sectional view of the outer ring fire cover is shown;

[0033] Figure 7 A three-dimensional diagram of an outer ring fire cover and a fire distributor seat combination according to another exemplary embodiment of the present invention;

[0034] Figure 8 for Figure 7 The front view of the outer ring fire cover and the fire distributor seat combination shown;

[0035] Fig. 9 for Figure 8 BB section view in;

[0036] Fig.10 for Figure 8 A cross-sectional view of the outer ring fire cover is shown.

[0037] The above drawings include the following reference numerals:

[0038] 10. Outer ring fire cover; 100. Fire cover body; 110. Inner ring; 111. Fire transfer hole; 120. Fire outlet ring; 121. Fire outlet hole; 1211. First fire hole; 1212. Second fire hole; 1213. First hole group; 1214. Second hole group; 1215. Side fire hole; 122. Ignition groove; 130. Top wall; 131. Near air inlet part; 132. Far air inlet part; 133. Fire transfer groove; 1331. First end; 1332. Second end; 140. Extension wall; 141. Third end; 142. Fourth end; 150. Outer ring; 20. Fire distributor seat; 210. Air inlet; 30. Air mixing space; 40. Combustion gas chamber; W. Width of fire transfer groove; H1. First interval; H2. Second interval; D3. Diameter of fire transfer hole. DETAILED DESCRIPTION

[0039] In the following description, a large number of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only illustrates preferred embodiments of the present invention, and the present invention can be implemented without one or more of such details. In addition, in order to avoid confusion with the present invention, some technical features known in the art are not described in detail.

[0040] In order to thoroughly understand the implementation of the utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the utility model is described in detail below, but in addition to these detailed descriptions, the utility model can also have other implementations.

[0041] The embodiment of the utility model provides an outer ring fire cover. Of course, it is not excluded that the inner ring fire cover also adopts this structure. In order to understand the utility model as a whole, the burner adopting the outer ring fire cover is first described.

[0042] For household gas stoves, their burners usually have an outer ring fire cover and an inner ring fire cover to form at least two rings of flames, thereby providing a variety of flame modes when used by users. Correspondingly, the burner further includes an outer ring fire distribution seat and an inner ring fire distribution seat, as well as an outer ring ejector tube and an inner ring ejector tube. The inner ring fire distribution seat is arranged at the center of the outer ring fire distribution seat. The outer ring fire cover and the inner ring fire cover are respectively covered on the outer ring fire distribution seat and the inner ring fire distribution seat, and the outer ring fire cover is located on the outer periphery of the inner ring fire cover. The outer ring ejector tube and the inner ring ejector tube are respectively connected to the outer ring fire distribution seat and the inner ring fire distribution seat. The outer ring fire distribution seat, the outer ring fire cover and the outer ring ejector tube form an outer ring gas mixing chamber. The inner ring fire distribution seat, the inner ring fire cover and the inner ring ejector tube form an inner ring gas mixing chamber

[0043] The following will combine Figures 1a to 10 An outer ring fire cover according to an embodiment of the utility model is introduced in detail.

[0044] Combined with reference Figures 1a to 6, the outer ring fire cover 10 may include a fire cover body 100. The fire cover body 100 may be in a circular ring shape. The fire cover body 100 may have an inner ring 110, a fire outlet ring 120 and a top wall 130 connected between the inner ring 110 and the fire outlet ring 120, and the inner ring 110, the top wall 130 and the fire outlet ring 120 are mutually surrounded to form a combustion chamber 40. A plurality of fire transmission holes 111 may be provided on the inner ring 110. A plurality of fire outlet holes 121 may be provided on the fire outlet ring 120 along the circumferential direction. The top wall 130 may be divided into a near air inlet portion 131 and a far air inlet portion 132 according to the distance from the air inlet position. The size of the near air inlet portion 131 may be equal to the size of the far air inlet portion 132, and of course the size of the far air inlet portion 132 may be slightly smaller than the size of the near air inlet portion 131. At least two fire transmission grooves 133 may be provided on the far air inlet portion 132 along the radial direction. Each fire transmission groove 133 may have a first end 1331 and a second end 1332. The first end 1331 may be connected to one of the fire transmission holes 111. The shape of the fire transmission hole 111 may be circular. When the fire cover body 100 is projected onto the plane where the top wall 130 is located, the center line projection of the fire transmission groove 133 on the plane may be centrally aligned with the projection of the fire transmission hole 111 on the plane, or the center line projection of the fire transmission groove 133 on the plane may be tangent to the projection of the fire transmission hole 111 on the plane. The fire transmission hole 111 and the fire transmission groove 133 may be connected. The second end 1332 may be connected to one of the fire outlet holes 121. The shape of the fire outlet hole 121 may be circular. When the fire cover body 100 is projected onto the plane where the top wall 130 is located, the center line projection of the fire transmission groove 133 on the plane may be centrally aligned with the projection of the fire outlet hole 121 on the plane, or the center line projection of the fire transmission groove 133 on the plane may be tangent to the projection of the fire outlet hole 121 on the plane. The fire transfer grooves 133 and the fire outlet holes 121 may be connected. It should be noted that, in order to make the outer ring fire cover 10 beautiful in appearance and simplify its manufacturing method, the connection method between each fire transfer groove 133 and each fire transfer hole 111 is the same, and the connection method between each fire transfer groove 133 and each fire outlet hole 121 is the same.

[0045] The burner of the utility model is provided with at least two fire transfer grooves 133 along the radial direction on the far air inlet part 132. After the fire transfer hole 111 is ignited, the flame can ignite the fire outlet ring 120 through the fire transfer grooves 133. Since the fire transfer grooves 133 are provided on the far air inlet part 132 of the top wall 130, the fuel gas entering from the air inlet position can be fully mixed with the air, thereby achieving the flame stabilization function, avoiding the problem of flame separation, yellow flame and poor fire transfer caused by the fire transfer grooves 133 being too close to the air inlet position. Each fire transfer groove 133 has a first end 1331 and a second end 1332. The first end 1331 is connected to one of the fire transfer holes 111, and the second end 1332 is connected to one of the fire outlet holes 121, thereby improving the fire transfer efficiency.

[0046] In one embodiment of the present utility model, in conjunction with reference to Figure 1a and Figure 3 , the inner ring 110 may have a diameter D1. The fire ring 120 may have a diameter D2. When D2-D1≥40, there may be at least three fire transfer grooves 133. Such a configuration ensures the reliability of fire transfer and avoids flameout during the fire transfer process due to the fire transfer distance being too far. When D2-D1≥40, if there are two fire transfer grooves 133, the two fire transfer grooves 133 are respectively arranged relatively close to the air inlet position on the far air inlet part 132, but the interval between the two fire transfer grooves 133 may be large, which may cause flameout during the fire transfer process; or the interval between the two fire transfer grooves 133 can meet the fire transfer between each other, but the two fire transfer grooves 133 are far from the air inlet position or one is far from the air inlet position, which will affect the fire transfer effect. When D2-D1≥40, if there is only one fire transfer groove 133, the fire transfer efficiency is low, and when in use, it is difficult for the fire cover body 100 to form an annular fire wall.

[0047] In one embodiment of the present invention, refer to Figure 4 , there may be an angle α between two adjacent fire transfer grooves 133, and α may be 60° to 90°. For example, α may be 60°, 80°, 90°, etc. When the angle α between two adjacent fire transfer grooves 133 is within this range, the reliability of fire transfer is guaranteed, and the flameout phenomenon during the fire transfer process is avoided due to the excessively large angle between the two adjacent fire transfer grooves 133, which makes the fire transfer distance too far, and the collision of the flames overflowing from the two adjacent fire transfer grooves 133 is avoided due to the excessively small angle between the two adjacent fire transfer grooves 133, which makes the fire transfer distance too close.

[0048] In one embodiment of the present invention, refer to Figure 5 , the width W of the fire transfer groove 133 can be 0.5mm to 0.7mm. For example, the width W of the fire transfer groove 133 can be 0.5mm, 0.6mm, 0.7mm, and so on. The width W of the fire transfer groove 133 is 0.6mm, and the fire transfer effect of the fire transfer groove 133 is the best. When the width W of the fire transfer groove 133 is within this range, the fire transfer effect of the fire transfer groove 133 is good. If the width W of the fire transfer groove 133 is less than 0.5mm, the fire transfer groove 133 is too thin, and it is easy to have poor air outlet, resulting in the problem of failure to transfer fire. If the width W of the fire transfer groove 133 is greater than 0.7mm, the fire transfer groove 133 is too thick, and the flame ejected from the fire transfer groove 133 may appear yellow flame.

[0049] In one embodiment of the present invention, refer to Figure 2, the plurality of fire holes 121 may include a plurality of first fire holes 1211 and a plurality of second fire holes 1212. The first fire holes 1211 and the second fire holes 1212 may be arranged at intervals in the vertical direction. The second end 1332 may be connected to one of the second fire holes 1212, because the plane where the first fire hole 1211 and the plane where the second fire hole 1212 are located respectively form an angle with the horizontal plane, and the angle between the plane where the second fire hole 1212 is located and the horizontal plane is smaller than the angle between the plane where the first fire hole 1211 is located and the horizontal plane, and the flame ejected from the second fire hole 1212 is more stable than the flame ejected from the first fire hole 1211. In this arrangement, compared with the second end 1332 being connected to one of the first fire holes 1211, since the second fire hole 1212 is arranged below the first fire hole 1211 in the vertical direction, the second end 1332 is connected to one of the second fire holes 1212, which can avoid the flame at the position of the fire transmission groove 133 being too high, resulting in the phenomenon that the ejected flame forms a yellow flame. The first fire holes 1211 may be respectively provided on both sides of the fire transfer groove 133 , and the fire transfer groove 133 may be used to transfer fire to the first fire holes 1211 on both sides, thereby further improving the fire transfer efficiency.

[0050] In one embodiment of the present invention, refer again to Figure 2 , the multiple first fire holes 1211 can be divided into multiple first hole groups 1213, and a first interval H1 can be provided between two adjacent first hole groups 1213 on the fire ring 120. The multiple second fire holes 1212 can be divided into multiple second hole groups 1214, and a second interval H2 can be provided between two adjacent second hole groups 1214 on the fire ring 120. The second interval H2 can be larger than the first interval H1. In this way, by providing an interval between two adjacent hole groups, the phenomenon of the flame ejected from the fire hole 121 burning the upper corner piece of the pot support during use is avoided. The upper corner piece of the pot support is generally located above the outer ring fire cover 10 in the vertical direction, and the upper corner piece of the pot support can be used to support the pot. The number of the first hole group 1213 and the second hole group 1214 can be related to the number of the pot support corner pieces. If the number of corner pieces is three, the number of the first hole group 1213 and the second hole group 1214 can both be three. If the number of corner pieces is four, the number of the first hole group 1213 and the second hole group 1214 can both be four, and so on.

[0051] In one embodiment of the present utility model, in conjunction with reference to Figure 2 and Figure 4, the second fire holes 1212 located on the side in the second hole group 1214 can be defined as side fire holes 1215. The adjacent side fire holes 1215 in two adjacent second hole groups 1214 can be connected by the ignition groove 122 arranged along the circumferential direction. In this way, the adjacent side fire holes 1215 in two adjacent second hole groups 1214 are connected by the ignition groove 122 arranged along the circumferential direction, which improves the fire transmission efficiency, and the height of the flame ejected by the ignition groove 122 is lower than the height of the flame ejected by the fire outlet hole 121, thereby effectively avoiding the phenomenon of flame burning the corner piece on the pot bracket during use. The number of the ignition grooves 122 can be multiple, and the adjacent side fire holes 1215 in each two adjacent second hole groups 1214 can be connected by the ignition groove 122 arranged along the circumferential direction. Projected toward the vertical plane, the projection of the center line of the ignition groove 122 can be tangent to the projection of the side fire holes 1215, and the projection of the center line of the ignition groove 122 can be lower than the projection of the center line of the side fire holes 1215 in the vertical direction, so as to avoid the flame from the ignition groove 122 being too high. Since the second interval H2 can be larger than the first interval H1, two first fire holes 1211 with the first interval H1 can be arranged above the ignition groove 122 in the vertical direction, thereby improving the efficiency of fire transmission.

[0052] In one embodiment of the present invention, again in conjunction with reference to Figure 2 and Figure 4 , the first interval H1 can be 18 mm to 22 mm. For example, the first interval H1 can be 18 mm, 20 mm, 22 mm, etc. When the first interval H1 is within this range, the flame ejected from the first fire hole 1211 can be prevented from burning the upper corner piece of the pot support, and the fire can be transferred between the first fire holes 1211 with the first interval H1 and the ignition groove 122, thereby improving the efficiency of fire transfer.

[0053] In one embodiment of the present invention, once again in conjunction with reference to Figure 2 and Figure 4 , the second interval H2 is 25mm to 31mm. For example, the first interval H1 can be 25mm, 30mm, 31mm, etc. When the second interval H2 is within this range, the flame ejected from the second fire hole 1212 can be prevented from burning the upper corner piece of the pot support, and the adjacent side fire holes 1215 in the two adjacent second hole groups 1214 with the second interval H2 are connected through the ignition groove 122 arranged in the circumferential direction, which can improve the efficiency of fire transmission.

[0054] In one embodiment of the present utility model, in conjunction with reference to Figure 1a and Figure 4, the outer ring fire cover 10 may have a mounting plane, and the center line of the fire transfer hole 111 may have an angle β with the first plane perpendicular to the mounting plane, and β may be 30° to 60°. For example, the angle β may be 30°, 45°, 60°, and so on. When the outer ring fire cover 10 is in use (i.e., when installed on the fire distributor seat 20 of the burner), the mounting plane may be a horizontal plane. The first plane may be a vertical plane perpendicular to the mounting plane. When the angle β between the center line of the fire transfer hole 111 and the first plane perpendicular to the mounting plane is within this range, the success rate of the fire transfer of the fire transfer groove 133 connected to the fire transfer hole 111 can be improved, and the efficiency of the fire transfer of the fire transfer groove 133 can be improved. Multiple fire transfer holes 111 may be arranged at intervals along the circumference of the inner ring 110, and there may be three fire transfer holes 111. At this time, the fire transfer hole 111 located in the middle may be connected to the first end 1331. At this time, the effect of improving the fire transfer of the fire transfer groove 133 through the fire transfer hole 111 is the best. Of course, there can also be two or four fire transfer holes 111, etc. There can be an angle θ between the center lines of two adjacent fire transfer holes 111, and the angle θ can be 5° to 7°. If the angle θ between the center lines of two adjacent fire transfer holes 111 is greater than 7°, the fire transfer effect is poor. If the angle θ between the center lines of two adjacent fire transfer holes 111 is less than 5°, the flames ejected from the two adjacent fire transfer holes 111 may collide. The diameter D3 of the fire transfer hole 111 can be 1.5mm to 1.8mm. For example, the diameter D3 of the fire transfer hole 111 can be 1.5mm, 1.7mm, 1.8mm, etc. When the diameter D3 of the fire transfer hole 111 is 0.6mm, the fire transfer effect is best. If the diameter D3 of the fire transfer hole 111 is less than 1.5mm, the fire transfer effect is poor. If the diameter D3 of the fire transfer hole 111 is greater than 1.8mm, the flame ejected from the fire transfer hole 111 will be a yellow flame.

[0055] In one embodiment of the present utility model, in conjunction with reference to Figure 1a and Figure 6, the fire ring 120 may extend an extension wall 140 in a direction away from the inner ring 110, and the extension wall 140 may be arranged not higher than the fire ring 120. The extension wall 140 further extends an outer ring 150 in a direction away from the inner ring 110. The extension wall 140 may have a third end 141 and a fourth end 142, the third end 141 may be connected to the fire ring 120, and the fourth end 142 is connected to the outer ring 150. Along the central axis direction, the plane where the fire ring 120 and the top wall 130 are connected may be higher than the plane where the third end 141 and the fourth end 142 are located. With such an arrangement, the radius of the fire ring 120 will not be too large, thereby avoiding the phenomenon of burning the handle of the pot or the kitchen utensils placed around the gas stove during the cooking process; the extension wall 140 is not arranged higher than the fire ring 120, so that during the cooking process, when the liquid overflowing from the pot drips onto the fire cover body 100, the liquid can flow outward along the extension wall 140 until it flows out of the outer ring 150 of the outer ring fire cover 10, thereby avoiding the liquid flowing along the fire cover body 100 to the root of the burner with the outer ring fire cover 10, causing the burner to experience problems such as flameout or poor ignition, and it is convenient for the user to clean the overflowed liquid.

[0056] In one embodiment of the present invention, Figure 3 As shown, the outer ring fire cover 10 may have a mounting plane, and the extension wall 140 may be parallel to the mounting plane. When the outer ring fire cover 10 is in use (i.e., when mounted on the fire distributor seat 20 of the burner), the mounting plane may be a horizontal plane. With such a configuration, when the outer ring fire cover 10 is mounted on the fire distributor seat 20 of the burner, a gas mixing space 30 may be formed between the extension wall 140 and the fire distributor seat 20, and the gas mixing space 30 is connected to the gas chamber 40. A mixture of gas and air may form a cyclone when entering the gas mixing space 30, so that the gas and air may be fully mixed, thereby making the gas burn more fully.

[0057] In one embodiment of the present invention, refer to Figure 3 The extension wall 140 may have a length D, and the length D may be 7 mm to 20 mm. For example, the length D may be 7 mm, 13 mm, 20 mm, etc. When the length D of the extension wall 140 is within this range, a gas mixing space 30 having this length range may be formed between the extension wall 140 and the flame distributor 20, so that the gas mixture of gas and air entering the gas mixing space 30 may form a cyclone, so that the gas and air may be mixed more fully, and the gas may burn more fully.

[0058] In another embodiment of the present invention, Figures 7 to 10The outer ring fire cover 10 may have a mounting plane, and the extension wall 140 may be arranged tilted relative to the mounting plane. When the outer ring fire cover 10 is in use (i.e., when it is mounted on the flame distributor 20 of the burner), the mounting plane may be a horizontal plane. In this way, on the one hand, the extension wall 140 may guide the liquid overflowing from the pot, so that the liquid can flow out of the outer ring 150 of the outer ring fire cover 10. In this way, not only can the liquid be prevented from flowing to the root of the burner, causing problems such as flameout or poor ignition of the burner, but also the liquid can be prevented from being retained on the extension wall 140, causing difficulty for the user to clean the outer ring fire cover 10; on the other hand, when the outer ring fire cover 10 is installed on the fire distributor seat 20 of the burner, a mixing space 30 can be formed between the extension wall 140 and the fire distributor seat 20, and a mixture of gas and air can form a cyclone when entering the mixing space 30. The inclined setting of the extension wall 140 can increase the mixing space 30, thereby increasing the cyclone formed by the mixture of gas and air, so that the gas and air can be mixed more fully, thereby making the gas burn more fully.

[0059] In another embodiment of the present invention, refer to Fig. 9 , the orthographic projection of the extension wall 140 on the installation plane may have a length D, and the length D may be 7 mm to 20 mm. For example, the length D may be 7 mm, 13 mm, 20 mm, etc. When the length D of the extension wall 140 is within this range, a gas mixing space 30 having this length range may be formed between the extension wall 140 and the flame distributor 20, whereby a gas mixture of gas and air entering the gas mixing space 30 may form a cyclone, so that the gas and air may be mixed more fully, thereby making the gas burn more fully.

[0060] In another embodiment of the present invention, refer again to Fig. 9 , an angle γ can be formed between the extension wall 140 and the installation plane, and the angle γ can be 10° to 30°. For example, the angle γ can be 10°, 20°, 30°, and so on. In this way, on the one hand, the angle γ is within this range, which can ensure that the extension wall 140 has a guiding effect on the liquid overflowing from the pot, thereby preventing the liquid from flowing to the root of the burner, causing the burner to flame out or ignite poorly, and preventing the liquid from being retained on the extension wall 140, making it difficult for the user to clean the outer ring fire cover 10; on the other hand, the angle α formed between the extension wall 140 and the installation plane increases the gas mixing space 30, thereby increasing the cyclone formed by the mixture of gas and air, so that the gas and air can be mixed more fully, and then the gas burns more fully.

[0061] According to another aspect of the present invention, a burner is provided, which may include a flame distribution seat 20 and the outer ring flame cover 10 as described above. Figure 1a and Figure 1bThe outer ring fire cover 10 can be covered on the fire distributor seat 20, and the fire distributor seat 20 can have an air inlet 210, and the air inlet 210 forms an air inlet position. The burner of the utility model includes the outer ring fire cover 10 as described above. Since the outer ring fire cover 10 has the above-mentioned beneficial effects, the burner including the outer ring fire cover 10 must also have the above-mentioned beneficial effects.

[0062] According to another aspect of the utility model, a gas stove is provided, which may include a stove bottom shell and the burner as described above. The burner may be arranged on the stove bottom shell. The gas stove of the utility model includes the burner as described above. Since the burner as described above has the beneficial effects as described above, the gas stove including the burner as described above must also have the beneficial effects as described above.

[0063] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contours of each component itself.

[0064] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0066] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0067] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An outer ring fire cover, comprising a fire cover body, wherein the fire cover body has an inner ring, a fire outlet ring and a top wall connected between the inner ring and the fire outlet ring, wherein the inner ring is provided with a plurality of fire transfer holes, and the fire outlet ring is provided with a plurality of fire outlet holes along the circumferential direction, characterized in that: The top wall is divided into a near air inlet part and a far air inlet part according to the distance from the air inlet position, and at least two fire transfer grooves are arranged in the radial direction on the far air inlet part, each of the fire transfer grooves has a first end and a second end, the first end is connected to one of the fire transfer holes, and the second end is connected to one of the fire outlet holes.

2. The outer ring fire cover according to claim 1, characterized in that: The inner ring has a diameter D1, the fire outlet ring has a diameter D2, and when D2-D1≥40, there are at least three fire transfer grooves.

3. The outer ring fire cover according to claim 1, characterized in that: There is an included angle α between two adjacent fire transfer grooves, and α is 60° to 90°.

4. The outer ring fire cover according to claim 1, characterized in that: The width of the fire transfer groove is 0.5mm to 0.7mm.

5. The outer ring fire cover according to claim 1, characterized in that: The plurality of fire holes include a plurality of first fire holes and a plurality of second fire holes. The first fire holes and the second fire holes are arranged with an interval in the upper and lower directions in the vertical direction. The second end is connected to one of the second fire holes.

6. The outer ring fire cover according to claim 5, characterized in that: The multiple first fire holes are divided into multiple first hole groups, and there is a first interval between two adjacent first hole groups on the fire ring; the multiple second fire holes are divided into multiple second hole groups, and there is a second interval between two adjacent second hole groups on the fire ring, and the second interval is larger than the first interval.

7. The outer ring fire cover according to claim 6, characterized in that: The second fire holes located at the side in the second hole group are defined as side fire holes, and two adjacent side fire holes in two adjacent second hole groups are connected by an ignition groove arranged along the circumferential direction.

8. The outer ring fire cover according to claim 6, characterized in that: The first interval is 18 mm to 22 mm.

9. The outer ring fire cover according to claim 6, characterized in that: The second interval is 25 mm to 31 mm.

10. The outer ring fire cover according to claim 1, characterized in that: The outer ring fire cover has a mounting plane, and an angle β is formed between the center line of the fire transmission hole and a first plane perpendicular to the mounting plane, and β is 30° to 60°.

11. The outer ring fire cover according to claim 1, characterized in that: The fire ring has an extension wall extending in a direction away from the inner ring, and the extension wall is not higher than the fire ring.

12. The outer ring fire cover according to claim 11, characterized in that: The outer ring fire cover has a mounting plane, and the extension wall is parallel to the mounting plane.

13. The outer ring fire cover according to claim 12, characterized in that: The extension wall has a length D, and the length D is 7 mm to 20 mm.

14. The outer ring fire cover according to claim 11, characterized in that: The outer ring fire cover has a mounting plane, and the extension wall is arranged inclined relative to the mounting plane.

15. The outer ring fire cover according to claim 14, characterized in that: The orthographic projection of the extension wall on the installation plane has a length D, and the length D is 7 mm to 20 mm.

16. The outer ring fire cover according to claim 14, characterized in that: An included angle γ is formed between the extension wall and the installation plane, and the included angle γ is 10° to 30°.

17. A burner, characterized in that: It comprises a fire distribution seat and an outer ring fire cover as described in any one of claims 1 to 16, wherein the outer ring fire cover is arranged on the fire distribution seat, and the fire distribution seat is provided with an air inlet, and the air inlet forms the air inlet position.

18. A gas stove, characterized in that: The invention comprises a stove bottom shell and the burner as claimed in claim 17, wherein the burner is arranged on the stove bottom shell.

Images