Fire cover, combustor and gas stove

Abstract

The utility model provides a fire cover, a burner and a gas stove, the fire cover comprises fire holes and grooves, the fire holes and the grooves extend inwards from a first outer wall surface of the fire cover, at least one groove is arranged between the adjacent fire holes, and the grooves are communicated with outside air at least at the first outer wall surface. Secondary air can be led to the fire holes through the grooves, the contact area between the fire holes and the secondary air can be increased, supplementation sufficiency of the secondary air can be improved, fuel gas can be fully combusted, and generation of smoke is reduced. And meanwhile, the air medium in the groove can reduce the temperature of the metal material at the root of the fire hole, so that yellow fire can be improved. Especially for a large-load and small-size combustor, the fire cover can guarantee a good combustion effect and low energy efficiency so as to meet various requirements of users.

Description

Technical Field

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

[0002] Existing gas stoves are gradually developing towards large loads. In order to adapt to the increase in load, the fire holes also need to be adjusted accordingly. Since the increase in the number of fire holes will result in limited strength, the existing technology usually increases the number of fire holes to adapt to the increase in the load of the gas stove. However, the increase in the number of fire holes will cause the distance between adjacent fire holes to become smaller. If the distance between fire holes is too small, it is easy to cause yellow fire and high smoke. In the existing technology, the problem of high smoke is solved by raising the pot support, but this will reduce energy efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of yellow flame and high smoke of the fire cover in the prior art, and to provide a fire cover, a burner and a gas stove.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A fire cover comprises a fire hole and a groove, wherein the fire hole and the groove both extend inwardly from a first outer wall surface of the fire cover, at least one groove is arranged between adjacent fire holes, and the groove is connected to the outside air at least at the first outer wall surface.

[0006] In the present solution, grooves connected to the outside air are provided between adjacent fire holes, that is, the secondary air can be directed to the fire holes by using the grooves, which is beneficial to increasing the contact area between the fire holes and the secondary air, and is beneficial to improving the adequacy of the supplementation of the secondary air, so that the gas is fully burned and the generation of smoke is reduced. At the same time, the air medium in the groove can reduce the temperature of the metal material at the root of the fire hole, which is beneficial to improving the yellow fire. Especially for burners with large loads and small sizes, the fire cover can ensure better combustion effects and lower energy efficiency to meet various needs of users. On the other hand, the openings of the fire holes and the grooves are both on the first outer wall surface, which is beneficial to shortening the path when supplementing the secondary air, thereby reducing the loss of secondary air, and further ensuring the reduction of smoke and improvement of the yellow fire.

[0007] Preferably, the groove is connected to the first outer wall surface via a guide surface, and the guide surface extends from the groove to a position close to the fire hole.

[0008] In this solution, the air in the groove can flow toward the fire hole along the guide surface. The guide surface plays a role of guiding and draining, so that the amount of secondary air replenished per unit time is greater, which is conducive to further reducing the generation of smoke.

[0009] Preferably, the guide surface is in an arc shape.

[0010] In this solution, an arc-shaped guide surface is used to connect the first outer wall surface and the guide surface, so that the connection between the first outer wall surface and the guide surface is smoother, which is beneficial to improving the guiding effect of the guide surface.

[0011] Preferably, the fire cover further has a second outer wall surface, the second outer wall surface is connected to the first outer wall surface and forms an angle with the first outer wall surface, and the groove runs through the second outer wall surface and is connected to the outside air.

[0012] In this solution, the groove runs through the second outer wall so that outside air can enter the groove from both the first outer wall and the second outer wall, which helps to ensure sufficient secondary air in the groove and further ensure that the fire hole receives sufficient secondary air.

[0013] Preferably, the projection of the groove along the circumference of the fire cover completely covers the projection of the fire hole along the circumference of the fire cover.

[0014] In this solution, the secondary air can flow to the fire hole evenly and fully, which is beneficial to further ensure smoke reduction and improve yellow fire.

[0015] Preferably, the fire cover further comprises a flame stabilizing slit, wherein the flame stabilizing slit extends inwardly from the first outer wall surface of the fire cover;

[0016] The flame stabilizing slit is arranged below the fire hole and the groove, or the flame stabilizing slit is arranged above the fire hole and the groove.

[0017] In this solution, a flame stabilizing slot is provided below or above the fire hole and the groove, which can improve the flame stability at the fire hole. At the same time, the groove can also pass the secondary air into the flame stabilizing slot, so that the contact area between the flame of the flame stabilizing slot and the secondary air is increased, so that the flame at the flame stabilizing slot burns more stably, which is conducive to ensuring that the flame at the flame stabilizing slot acts better on the fire hole, that is, the flame stabilizing effect is ensured, and the combustion effect at the fire hole is further ensured.

[0018] Preferably, there is a gap between the flame stabilizing slot and the groove.

[0019] In this solution, the above-mentioned structural form is adopted to ensure that the flame-stabilizing seam remains intact, thereby ensuring the flame-stabilizing effect of the flame-stabilizing seam.

[0020] Preferably, the flame stabilizing slots are arranged continuously and uninterruptedly along the circumference of the fire cover.

[0021] In this solution, the above structure can be used to make the lathe cutter run around the fire cover to cut out the flame stabilizing seam, making the processing more convenient. At the same time, the ventilation volume can be increased and the probability of the flame stabilizing seam being blocked can be reduced.

[0022] A burner comprises the fire cover as described above.

[0023] In this solution, when the burner uses the above-mentioned fire cover, the amount of smoke generated is reduced and the yellow fire is improved. Especially for large-load and small-sized burners, better combustion effects and lower energy efficiency can be guaranteed to meet the various needs of users.

[0024] A gas stove comprises the burner as described above.

[0025] The positive and progressive effects of the utility model are:

[0026] The utility model provides a groove connected to the outside air between adjacent fire holes, that is, the groove can be used to pass secondary air to the fire hole, which is beneficial to increase the contact area between the fire hole and the secondary air, and is beneficial to improve the adequacy of the supplement of the secondary air, so that the gas is fully burned and the generation of smoke is reduced. At the same time, the air medium in the groove can reduce the temperature of the metal material at the root of the fire hole, which is beneficial to improve the yellow fire. Especially for burners with large loads and small sizes, the fire cover can ensure better combustion effects and lower energy efficiency to meet various needs of users. On the other hand, the openings of the fire hole and the groove are both on the first outer wall, which is beneficial to shorten the path when supplementing the secondary air, thereby reducing the loss of secondary air, and further ensuring the reduction of smoke and improvement of yellow fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a fire cover according to a preferred embodiment of the utility model.

[0028] Figure 2 This is a partial enlarged view of a fire cover according to a preferred embodiment of the utility model.

[0029] Figure 3 The figure is a schematic cross-sectional structure diagram of a fire cover according to a preferred embodiment of the utility model.

[0030] Description of Reference Numerals

[0031] Fire Cover 100

[0032] Fire hole 1

[0033] Groove 2

[0034] First outer wall 3

[0035] Guide surface 4

[0036] Second outer wall 5

[0037] Flame stabilization seam 6 DETAILED DESCRIPTION

[0038] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0039] like Figure 1-Figure 3 As shown, this embodiment discloses a fire cover 100, including a fire hole 1 and a groove 2, both of which extend inward from a first outer wall surface 3 of the fire cover 100, at least one groove 2 is provided between adjacent fire holes 1, and the groove 2 is connected to the outside air at least at the first outer wall surface 3. The fire cover 100 can be an outer ring fire cover or an inner ring fire cover.

[0040] By providing a groove 2 connected to the outside air between adjacent fire holes 1, that is, by using the groove 2 to pass secondary air to the fire hole 1, it is beneficial to increase the contact area between the fire hole 1 and the secondary air, and to improve the adequacy of the supplement of the secondary air, so that the gas is fully burned and the generation of smoke is reduced. At the same time, the air medium in the groove 2 can reduce the temperature of the metal material at the root of the fire hole 1, which is beneficial to improve the yellow fire. Especially for burners with large loads and small sizes, the fire cover 100 can ensure better combustion effects and lower energy efficiency to meet various needs of users. On the other hand, the openings of the fire hole 1 and the groove 2 are both on the first outer wall surface 3, which is beneficial to shorten the path when supplementing the secondary air, thereby reducing the loss of secondary air, and further ensuring the reduction of smoke and improvement of yellow fire.

[0041] In addition, when the groove 2 can already reduce the smoke, the pot support can be lowered to improve energy efficiency to ensure that the burner can achieve better performance in all aspects.

[0042] like Figure 2 As shown, the groove 2 is connected to the first outer wall surface 3 by a guide surface 4, and the guide surface 4 extends from the groove 2 to a position close to the fire hole 1, so that the air in the groove 2 can flow to the fire hole 1 along the guide surface 4, and the guide surface 4 plays a role in guiding and draining, so that the amount of secondary air replenished per unit time is greater, which is conducive to further reducing the generation of smoke. In this embodiment, the guide surface 4 is in an arc shape, and the first outer wall surface 3 and the guide surface 4 are connected by the arc-shaped guide surface 4, so that the connection between the first outer wall surface 3 and the guide surface 4 is smoother, which is conducive to improving the guiding effect of the guide surface 4. In other embodiments, the guide surface 4 can also be an inclined plane.

[0043] like Figure 1 and Figure 2As shown, the fire cover 100 also has a second outer wall surface 5, which is connected to the first outer wall surface 3 and forms an angle, and the groove 2 runs through the second outer wall surface 5 and is connected to the outside air. The groove 2 runs through the second outer wall surface 5, so that the outside air can enter the groove 2 from both the first outer wall surface 3 and the second outer wall surface 5, which is conducive to ensuring that the secondary air volume in the groove 2 is sufficient, and further ensures that the fire hole 1 receives sufficient secondary air. On the other hand, compared with the case where the groove 2 does not run through the second outer wall surface 5, the groove 2 running through the second outer wall surface 5 is conducive to increasing the size of the groove 2, which further ensures the secondary air volume, so that the fire hole 1 can receive a sufficient amount of secondary air.

[0044] like Figure 2 As shown, the projection of the groove 2 along the circumference of the fire cover 100 completely covers the projection of the fire hole 1 along the circumference of the fire cover 100, so that the secondary air can flow to the fire hole 1 evenly and fully, which is conducive to further ensuring smoke reduction and improving yellow fire. In this embodiment, the lower end of the groove 2 is flush with the lower edge of the fire hole 1, so that enough space can be left below the groove 2 and the fire hole 1 to set the flame stabilizing seam 6 to ensure that the flame stabilizing seam 6 can remain intact. In other embodiments, the lower end of the groove 2 can be lower than the lower edge of the fire hole 1.

[0045] The fire cover 100 also includes a flame stabilizing slit 6, which extends inward from the first outer wall surface 3 of the fire cover 100. In the present embodiment, the flame stabilizing slit 6 is disposed below the fire hole 1 and the groove 2. In other embodiments, the flame stabilizing slit 6 may be disposed above the fire hole 1 and the groove 2. Providing the flame stabilizing slit 6 below or above the fire hole 1 and the groove 2 can improve the flame stability at the fire hole 1. At the same time, the groove 2 can also pass secondary air into the flame stabilizing slit 6, thereby increasing the contact area between the flame of the flame stabilizing slit 6 and the secondary air, so that the flame at the flame stabilizing slit 6 burns more stably, which is beneficial to ensure that the flame at the flame stabilizing slit 6 acts better on the fire hole 1, that is, the flame stabilizing effect is ensured, and the combustion effect at the fire hole 1 is further ensured.

[0046] like Figure 3 As shown, there is a gap between the flame stabilizing slit 6 and the groove 2 , which ensures that the flame stabilizing slit 6 remains intact, thereby ensuring the flame stabilizing effect of the flame stabilizing slit 6 .

[0047] In this embodiment, the flame stabilizing slit 6 is continuously and uninterruptedly arranged along the circumference of the fire cover 100, so that the lathe tool can run around the fire cover 100 to cut out the flame stabilizing slit 6, which is more convenient for processing. At the same time, it can also increase the ventilation volume and reduce the probability of the flame stabilizing slit 6 being blocked. In other embodiments, the flame stabilizing slit 6 can also be intermittent.

[0048] This embodiment also discloses a burner, which includes the above-mentioned fire cover 100. When the burner uses the above-mentioned fire cover 100, the smoke generation is reduced and the yellow flame is improved, especially for a burner with a large load and a small size, which can ensure a better combustion effect and lower energy efficiency to meet various needs of users.

[0049] This embodiment also discloses a gas stove, which includes the burner as described above.

[0050] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship of the device or component in normal use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation at any time, and therefore cannot be understood as a limitation on the present invention in this regard.

[0051] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A fire cover, characterized in that: It comprises a fire hole and a groove, both of which extend inwardly from the first outer wall surface of the fire cover, at least one groove is arranged between adjacent fire holes, and the groove is connected with the outside air at least at the first outer wall surface.

2. The fire cover according to claim 1, characterized in that: The groove is connected to the first outer wall surface via a guide surface, and the guide surface gradually extends from the inside to the outside in a direction away from the groove.

3. The fire cover according to claim 2, characterized in that: The guide surface is in an arc shape.

4. The fire cover according to claim 1, characterized in that: The fire cover also has a second outer wall surface, the second outer wall surface is connected to the first outer wall surface and forms an angle with the first outer wall surface, and the groove runs through the second outer wall surface and is connected to the outside air.

5. The fire cover according to claim 1, characterized in that: The projection of the groove along the circumference of the fire cover completely covers the projection of the fire hole along the circumference of the fire cover.

6. The fire cover according to claim 1, characterized in that The fire cover further comprises a flame stabilizing slot, wherein the flame stabilizing slot extends inwardly from a first outer wall surface of the fire cover; The flame stabilizing slit is arranged below the fire hole and the groove, or the flame stabilizing slit is arranged above the fire hole and the groove.

7. The fire cover according to claim 6, characterized in that There is a gap between the flame stabilizing slot and the groove.

8. The fire cover according to claim 6, characterized in that The flame stabilizing slots are continuously and uninterruptedly arranged along the circumference of the fire cover.

9. A burner, characterized in that: The burner comprises a fire cover as claimed in any one of claims 1-8.

10. A gas stove, characterized in that: The gas stove includes the burner as claimed in claim 9.

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