Outer ring fire cover and combustor

Abstract

The utility model provides an outer ring fire cover and a combustor. The outer ring fire cover comprises an inner side wall, an outer side wall, a cover top wall and a fire transferring part, the cover top wall is connected between the inner side wall and the outer side wall to form a gas mixing cavity, the fire transferring part is arranged on the cover top wall and comprises a fire transferring groove extending in the radial direction, and the fire transferring groove is provided with a first groove side wall and a second groove side wall which are oppositely arranged; the first groove side wall is closer to the gas mixing cavity than the second groove side wall, and the fire transferring groove communicates with the gas mixing cavity through a communicating channel formed in the first groove side wall. Thus, the gas mixture in the gas mixing cavity enters the fire transfer groove through the communicating channel, the gas flow rate in the fire transfer groove can be better controlled through the arrangement of the communicating channel, the situations such as flame separation are avoided, and the fire transfer effect is guaranteed.

Description

Technical Field

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

[0002] At present, household gas stoves generally have a burner, which usually includes an outer ring fire cover and a central fire cover located in the center of the outer ring fire cover. The flame usually burns first in the central fire cover, and then the flame is conducted from the central fire cover to the outer ring fire cover.

[0003] In order to facilitate the conduction of flames, the outer ring fire cover usually includes a body and a fire transfer part arranged on the body. A gas mixing chamber is formed in the body, and the fire transfer part generally has a fire transfer groove. One side of the fire transfer groove forms an opening exposed to the outside, and the other side penetrates the body in a predetermined direction and forms a slot. The gas mixture in the gas mixing chamber enters the fire transfer groove through the slot, flows out through the opening and burns.

[0004] However, the slots arranged in this way can easily cause the flow rate of the fuel gas mixture in the flame transfer slot to be too large, resulting in flame separation and the like, thus affecting the flame transfer effect. Utility Model Content

[0005] 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. The outer ring fire cover comprises an inner side wall, an outer side wall, a cover top wall and a fire transfer part, the cover top wall is connected between the inner side wall and the outer side wall to form a gas mixing chamber, the fire transfer part is arranged on the cover top wall, the fire transfer part comprises a fire transfer groove extending in a radial direction, the fire transfer groove comprises a first groove side wall and a second groove side wall arranged oppositely, the first groove side wall is closer to the gas mixing chamber than the second groove side wall, and the fire transfer groove is connected with the gas mixing chamber through a connecting channel arranged on the first groove side wall.

[0006] The outer ring fire cover provided by the present application, the gas mixture in the gas mixing chamber enters the fire transfer groove through the connecting channel, and the gas flow rate in the fire transfer groove can be better controlled by setting the connecting channel, avoiding the occurrence of flame separation and the like, and ensuring the fire transfer effect. The connecting channel is set on the side wall of the first groove, and the gas mixture in the gas mixing chamber enters the fire transfer groove through the connecting channel, and is buffered to a certain extent by the impact contact with the side wall of the second groove, so that the gas flow rate in the fire transfer groove is more stable and the fire transfer effect is more stable.

[0007] Exemplarily, the fire transmission part includes a fire transmission top wall, a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall is connected between the fire transmission top wall and the inner side wall, the second side wall is connected between the fire transmission top wall and the outer side wall, the third side wall and the fourth side wall are both connected between the fire transmission top wall and the cover top wall, and the third side wall and the fourth side wall are arranged on opposite sides of the fire transmission top wall along the circumferential direction, the fire transmission groove extends from the third side wall to the fourth side wall, and the projection of the fire transmission top wall on the horizontal plane covers the projection of the fire transmission groove on the horizontal plane. With this arrangement, when overflow, oil stains, etc. drip, it can prevent the oil stains, etc. from dripping into the fire transmission groove to cause blockage, thereby better ensuring the fire transmission effect of the fire transmission part.

[0008] Exemplarily, the fire transfer groove is inclined along the third side wall toward the fourth side wall away from the fire transfer top wall. The gas mixture in the fire transfer groove flows out upward and is ignited, so that the gas flow in the fire transfer groove arranged in this way is smoother and the fire transfer effect is better.

[0009] Exemplarily, the first groove side wall and the second groove side wall meet the parallel condition. In this way, the gas mixture flows more smoothly in the flame transfer groove.

[0010] Exemplarily, the connecting channel includes a first channel, a second channel and a third channel, and the first channel, the second channel and the third channel are arranged in sequence from outside to inside along the radial direction, wherein the first channel is inclined outwardly along the bottom surface of the side wall of the first groove toward the direction of the top wall of the fire transfer. The first channel is arranged in this way, so that the amount of the gas mixture on the side of the fire transfer groove close to the outside is more consistent with that at other places, and the distribution of the gas mixture at various places in the fire transfer groove is more balanced, so as to ensure the fire transfer effect.

[0011] For example, the third channel is inclined inwardly along the bottom surface of the side wall of the first groove toward the direction of the top wall of the fire transfer groove. In this way, the amount of the gas mixture on the inner side of the fire transfer groove is more consistent with that at other places, and the distribution of the gas mixture at various places in the fire transfer groove is more balanced to ensure the fire transfer effect.

[0012] Exemplarily, there are a plurality of second passages extending in a direction perpendicular to the horizontal plane, so that the process of the gas mixture in the gas mixing chamber entering the flame transfer groove through the second passages is more efficient.

[0013] For example, the third side wall is tilted downward from the top to the fourth side wall, or the third side wall is perpendicular to the horizontal plane. The third side wall arranged in this way can better ensure that the top wall of the fire transfer wall shields the fire transfer groove, prevent oil and dirt from dripping into the fire transfer groove to cause blockage, and thus better ensure the fire transfer effect of the fire transfer part.

[0014] For example, the top surface of the top wall of the fire transfer is inclined from outside to inside and downward in the radial direction. In this way, oil stains and the like falling on the top surface of the top wall of the fire transfer can flow away along the inclined top surface to avoid accumulation on the top wall of the fire transfer.

[0015] According to another aspect of the utility model, a burner is also provided, which includes a flame distributor and any one of the above outer ring fire covers, wherein the outer ring fire cover is buckled on the flame distributor.

[0016] 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 is not intended to limit the key features and essential technical features of the technical solution claimed for protection, nor is it intended to determine the scope of protection of the technical solution claimed for protection.

[0017] The advantages and features of the present invention are described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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,

[0019] Figure 1-3 A perspective view of an outer ring fire cover according to an exemplary embodiment of the present utility model;

[0020] Figure 4 A top view of an outer ring fire cover according to an exemplary embodiment of the present utility model; and

[0021] Figure 5-6 It is a cross-sectional view of an outer ring fire cover according to an exemplary embodiment of the present utility model.

[0022] The above drawings include the following reference numerals:

[0023] 10. Outer ring fire cover; 101. Gas mixing chamber; 110. Inner wall; 1110. Fire transfer hole; 120. Outer wall; 1210. Fire outlet hole; 130. Cover top wall; 140. Fire transfer part; 1410. Fire transfer groove; 1411. First groove side wall; 1412. Second groove side wall; 1420. Connecting channel; 1421. First channel; 1422. Second channel; 1423. Third channel; 1430. Fire transfer top wall; 1440. First side wall; 1450. Second side wall; 1460. Third side wall; 1470. Fourth side wall. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] The utility model provides an outer ring fire cover in the embodiment. Figure 1 , 3 6, the outer ring fire cover 10 may include an inner wall 110, an outer wall 120, a cover top wall 130 and a fire transfer part 140, and the cover top wall 130 is connected between the inner wall 110 and the outer wall 120 to form a gas mixing chamber 101. The outer wall 120 may be provided with a fire outlet hole 1210, and the fire outlet hole 1210 is connected to the gas mixing chamber 101. The fire transfer part 140 may be arranged on the cover top wall 130, and the fire transfer part 140 includes a fire transfer groove 1410 extending in a radial direction. The radial direction is the radial direction of the outer ring fire cover 10. The fire transfer groove 1410 may be arranged through the radial direction to conduct the inner flame to the outer fire outlet hole 1210. Exemplarily, the inner wall 110 may be provided with a fire transfer hole 1110, and the fire transfer hole 1110 is connected to the gas mixing chamber 101. The fire transfer hole 1110 may be located below the fire transfer groove 1410. The flame transfer groove 1410 may have a first groove side wall 1411 and a second groove side wall 1412 arranged opposite to each other, the first groove side wall 1411 being closer to the gas mixing chamber 101 than the second groove side wall 1412, and the flame transfer groove 1410 may be connected with the gas mixing chamber 101 through a connecting channel 1420 arranged on the first groove side wall 1411. Specifically, the connecting channel 1420 may be an opening penetrating the first groove side wall 1411. The gas mixture in the gas mixing chamber 101 flows into the flame transfer groove 1410 through the connecting channel 1420, flows out through the flame transfer groove 1410 and burns, so as to form a flame penetrating from the inside to the outside in a radial direction. Specifically, in a burner using the outer ring fire cover 10, the central fire cover burns to ignite the fire holes 1210, the fire holes 1210 burn and ignite the fire transfer grooves 1410, and the fire transfer grooves 1410 burn to ignite the fire holes 1210 on the outer wall 120, thereby forming a complete fire transfer process from the central fire cover to the outer ring fire cover 10.

[0027] It is understandable that the fire transfer effect of the fire transfer part 140 is related to the flow rate of the gas mixture in the fire transfer groove 1410, that is, it is related to the flow area of ​​the connecting channel 1420. In the prior art, the fire transfer groove usually directly penetrates the fire cover body and forms a slot, which is usually formed by cutting during processing. The width of the slot is the same as the width of the fire transfer groove, which easily leads to excessive flow rate of the gas mixture in the fire transfer groove, resulting in flame separation during combustion. Directly increasing the width of the fire transfer groove will increase the difficulty and cost of processing. In addition, the slot formed by cutting is located on the bottom wall of the fire transfer groove. When the gas mixture in the gas mixing chamber flows through the slot into the fire transfer groove, it cannot be buffered, resulting in a relatively unstable gas flow rate in the fire transfer groove, affecting the fire transfer effect.

[0028] The outer ring fire cover 10 provided by the present application, the gas mixture in the gas mixing chamber 101 enters the fire transfer groove 1410 through the connecting channel 1420, and the gas flow rate in the fire transfer groove 1410 can be better controlled by setting the connecting channel 1420, so as to avoid the occurrence of flame separation and the like, and ensure the fire transfer effect. The connecting channel 1420 is arranged on the first groove side wall 1411, and the gas mixture in the gas mixing chamber 101 enters the fire transfer groove 1410 through the connecting channel 1420, and is buffered to a certain extent by the impact contact with the second groove side wall 1412, so that the gas flow rate in the fire transfer groove 1410 is more stable, and the fire transfer effect is more stable.

[0029] For example, in conjunction with reference Figure 1 and 2The fire transmission part 140 may include a fire transmission top wall 1430, a first side wall 1440, a second side wall 1450, a third side wall 1460 and a fourth side wall 1470. The first side wall 1440 is connected between the fire transmission top wall 1430 and the inner side wall 110, the second side wall 1450 is connected between the fire transmission top wall 1430 and the outer side wall 120, the third side wall 1460 and the fourth side wall 1470 are both connected between the fire transmission top wall 1430 and the cover top wall 130, and the third side wall 1460 and the fourth side wall 1470 are arranged on opposite sides of the fire transmission top wall 1430 along the circumferential direction. The fire transmission groove 1410 extends from the third side wall 1460 to the fourth side wall 1470, and the projection of the fire transmission top wall 1430 on the horizontal plane can cover the projection of the fire transmission groove 1410 on the horizontal plane. The fire transmission part 140 as a whole may protrude from the cover top wall 130. The fire transfer groove 1410 may be a groove cut from the third side wall 1460 to the fourth side wall 1470. The cut of the fire transfer groove 1410 may penetrate the third side wall 1460 in the radial direction, and the cut of the fire transfer groove 1410 may penetrate a portion of the first side wall 1440 and a portion of the second side wall 1450. This arrangement can prevent the oil stains from dripping into the fire transfer groove 1410 and causing blockage when overflowing liquid, oil stains, etc. drip, thereby better ensuring the fire transfer effect of the fire transfer part 140. In an embodiment not shown, the fire transfer groove may be located on the fire transfer top wall, or the fire transfer groove may be arranged at any other position.

[0030] For example, in conjunction with reference Figure 1 and 6 The fire transfer groove 1410 may be arranged along the third side wall 1460 and toward the fourth side wall 1470 in an inclined direction away from the fire transfer top wall 1430. Figure 6 For example, the flame transfer groove 1410 is set from right to left and tilted downward. The gas mixture in the flame transfer groove 1410 flows out tilted upward and is ignited, so that the gas flow in the flame transfer groove 1410 arranged in this way is smoother and the flame transfer effect is better. Exemplarily, the connecting channel 1420 can be located at one end of the first groove side wall 1411 close to the fourth side wall 1470, so that the gas mixture can be better buffered in the flame transfer groove 1410.

[0031] For example, in conjunction with reference Figure 1 , 5 and 6, the first groove side wall 1411 and the second groove side wall 1412 can meet the parallel condition. That is, the flow area of ​​the gas mixture flowing in each place in the flame transfer groove 1410 is closer. In this way, the flow of the gas mixture in the flame transfer groove 1410 is smoother. Exemplarily, the first groove side wall 1411 and the second groove side wall 1412 can be inclined along the third side wall 1460 toward the fourth side wall 1470 away from the flame transfer top wall 1430.

[0032] For example, refer to Figure 5 , the connecting channel 1420 may include a first channel 1421, a second channel 1422 and a third channel 1423, and the first channel 1421, the second channel 1422 and the third channel 1423 may be arranged in sequence from the outside to the inside along the radial direction. Among them, the first channel 1421 is inclined outwardly along the bottom surface of the first groove side wall 1411 toward the direction of the fire transfer top wall 1430. The first channel 1421 set in this way can make the amount of the gas mixture on the side close to the outside of the fire transfer groove 1410 more consistent with other places, and the distribution of the gas mixture at various places in the fire transfer groove 1410 is more balanced to ensure the fire transfer effect. Exemplarily, in the illustrated embodiment, there is one first channel 1421. In an embodiment not shown, the number of first channels 1421 can be set to any number according to usage requirements.

[0033] For example, refer to Figure 5 , the third channel 1423 may be inclined inwardly along the bottom surface of the first groove side wall 1411 toward the direction of the fire transfer top wall 1430. Figure 5 Taking the perspective shown in the figure as an example, the third channel 1423 is tilted from bottom to top to the right. In this way, the amount of the gas mixture on the side close to the inner side of the fire transmission groove 1410 is more consistent with that at other places, and the distribution of the gas mixture at various places in the fire transmission groove 1410 is more balanced to ensure the fire transmission effect. In the embodiment shown in the figure, there is one third channel 1423. In the embodiment not shown, the number of the third channels 1423 can be set to any number according to the use requirements.

[0034] For example, continue to refer to Figure 5 , the second channel 1422 can be multiple and extend in a direction that satisfies the vertical condition with the horizontal plane. That is to say, the second channel 1422 is extended in the vertical direction. In this way, the process of the gas mixture in the mixing chamber 101 entering the fire transfer groove 1410 through the second channel 1422 is more efficient. In the embodiment in which the first channel 1421 is inclined outwardly along the bottom surface of the first groove side wall 1411 toward the fire transfer top wall 1430, and the third channel 1423 can be inclined inwardly along the bottom surface of the first groove side wall 1411 toward the fire transfer top wall 1430, the outer ring fire cover 10 arranged in this way is easier to demold.

[0035] For example, the third side wall 1460 may be arranged to be inclined from top to bottom toward the fourth side wall 1470. Figure 1 and 6, the third side wall 1460 can meet the vertical condition with the horizontal plane. The third side wall 1460 set in this way can better ensure that the fire transfer top wall 1430 shields the fire transfer groove 1410, prevent oil and dirt from dripping into the fire transfer groove 1410 and causing blockage, thereby better ensuring the fire transfer effect of the fire transfer part 140. In an embodiment not shown, the third side wall can extend from top to bottom and in a direction away from the fourth side wall.

[0036] For example, refer to Figure 5 , the top surface of the fire-transmitting top wall 1430 can be tilted from outside to inside and downward in the radial direction. In this way, the oil stains and the like falling on the top surface of the fire-transmitting top wall 1430 can flow away along the tilted top surface to avoid accumulation on the fire-transmitting top wall 1430. Further, the cover top wall 130 can be tilted from outside to inside and downward in the radial direction. The cover top wall 130 and the fire-transmitting top wall 1430 can have the same tilting trend. In an embodiment not shown, the fire-transmitting top wall 1430 can meet the parallel condition with the horizontal plane.

[0037] According to another aspect of the utility model, a burner is also provided. The burner may include an ignition divider and any one of the above-mentioned outer ring fire covers 10. The outer ring fire cover 10 may be buckled on the ignition divider, and the ignition divider may cover the gas mixing chamber 101. In this way, the ignition divider and the outer ring fire cover 10 may enclose a gas mixing chamber 101 with better airtightness, and the gas and air may be fully mixed in the gas mixing chamber 101. Since the outer ring fire cover 10 adopts the technical solution of any of the above-mentioned embodiments, the burner at least has the beneficial effects brought by the technical solution of the above-mentioned embodiments, which will not be described one by one here. In addition, the burner may also include a center fire cover, an ignition needle, etc. The center fire cover and the ignition needle, etc. may have various structures that exist or may appear in the future, which do not constitute a limitation on the scope of protection of the utility model.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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, characterized in that: The fire transfer portion comprises an inner wall, an outer wall, a cover top wall and a fire transfer portion, wherein the cover top wall is connected between the inner wall and the outer wall to form an air mixing chamber, the fire transfer portion is arranged on the cover top wall, the fire transfer portion comprises a fire transfer groove extending in a radial direction, the fire transfer groove has a first groove side wall and a second groove side wall arranged oppositely, the first groove side wall is closer to the air mixing chamber than the second groove side wall, and the fire transfer groove is connected with the air mixing chamber through a connecting channel arranged on the first groove side wall.

2. The outer ring fire cover according to claim 1, characterized in that: The fire transfer portion includes a fire transfer top wall, a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall is connected between the fire transfer top wall and the inner side wall, the second side wall is connected between the fire transfer top wall and the outer side wall, the third side wall and the fourth side wall are both connected between the fire transfer top wall and the cover top wall, and the third side wall and the fourth side wall are arranged on opposite sides of the fire transfer top wall along the circumferential direction. The fire transfer groove extends from the third side wall to the fourth side wall, and the projection of the fire transfer top wall on the horizontal plane covers the projection of the fire transfer groove on the horizontal plane.

3. The outer ring fire cover according to claim 2, characterized in that: The fire transfer groove is inclined along the third side wall toward the fourth side wall and away from the fire transfer top wall.

4. The outer ring fire cover according to claim 2 or 3, characterized in that: The first groove side wall and the second groove side wall meet a parallel condition.

5. The outer ring fire cover according to claim 2, characterized in that: The connecting channel includes a first channel, a second channel and a third channel, and the first channel, the second channel and the third channel are arranged in sequence from outside to inside along the radial direction, wherein the first channel is inclined outwardly along the bottom surface of the first groove side wall toward the direction of the fire transfer top wall.

6. The outer ring fire cover according to claim 5, characterized in that: The third channel is inclined inwardly along the bottom surface of the first groove side wall toward the fire transfer top wall.

7. The outer ring fire cover according to claim 5, characterized in that: The second channels are multiple and extend in a direction perpendicular to the horizontal plane.

8. The outer ring fire cover according to claim 2, characterized in that: The third side wall is inclined downward from top to bottom in the direction of the fourth side wall, or the third side wall and the horizontal plane meet a vertical condition.

9. The outer ring fire cover according to claim 8, characterized in that: The top surface of the fire transfer top wall is inclined from outside to inside and downward along the radial direction.

10. A burner, characterized in that: It comprises a fire divider and an outer ring fire cover as claimed in any one of claims 1 to 9, wherein the outer ring fire cover is buckled on the fire divider.

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