Fire cover and combustor

Abstract

The utility model belongs to the technical field of cooking utensils, particularly relates to a fire cover and a burner, and aims to improve the processing technology, the air inducing performance, the generated smoke concentration and the burning efficiency of the fire cover of the burner at least to a certain extent. A gas mixing cavity is formed in the burner cap, an annular channel is formed in the burning face of the burner cap and communicates with the gas mixing cavity, and the gas outlet direction of the annular channel faces the center axis of the burner cap. According to the burner, the machining process of the burner cap is simplified, the manufacturing cost is reduced, the air outlet resistance is reduced, the air inducing capacity of the burner is improved, the annular flame facing the interior of the burner is generated, gas is fully burnt, emission of harmful smoke is reduced, the heat efficiency of a kitchen range is improved, the heating effect on the kitchen range can be improved, and good practicability is achieved.

Description

Technical Field

[0001] This application belongs to the field of cooking utensil technology, specifically relating to a burner cap and a burner. Background Technology

[0002] In related technologies, there is room for improvement in the burner's burner cap manufacturing process, induced draft performance, generated flue gas concentration, and combustion efficiency. Summary of the Invention

[0003] This application provides a burner cap and a burner, which aims to improve the burner cap's processing technology, induced draft performance, generated flue gas concentration, and combustion efficiency to at least a certain extent.

[0004] In a first aspect of this application, a flame cap is provided, wherein the flame cap has a built-in mixing chamber, the combustion surface of the flame cap is provided with an annular channel, the annular channel is connected to the mixing chamber, and the gas outlet direction of the annular channel is toward the central axis of the flame cap.

[0005] In some implementations, the slope of the outlet direction of the annular channel is α, where 90° > α > 0°.

[0006] In some implementations, 90° > α ≥ 45°.

[0007] In some implementations, the flame cap has two or more annular channels along its radial direction.

[0008] In some implementations, the slope of the air outlet direction of at least some of the annular channels is inconsistent, or the slope of the air outlet direction of two or more of the annular channels is consistent.

[0009] In some implementations, an annular partition plate is provided inside the annular channel, and the partition plate and the two side walls of the annular channel are spaced apart to divide the annular channel into multiple independent fire exit channels.

[0010] In some implementations, at least one of the fire outlet channels is provided with a gas equalization plate, and the gas equalization plate is provided with a plurality of gas equalization holes at intervals.

[0011] In some implementations, there is a height difference between some of the gas distribution discs.

[0012] In some implementations, the flame cap is integrally formed, or the flame cap is a split structure.

[0013] In a second aspect of this application, a burner is provided, the burner including the aforementioned flame cap.

[0014] In some embodiments, two or more burner caps are provided along the radial direction of the burner, and at least one burner cap is provided with the annular channel.

[0015] The burner provided in this application features a built-in mixing chamber within the burner cap, with an annular channel on the combustion surface of the burner cap. This annular channel connects to the mixing chamber, allowing the combustion gas and primary air to mix and form combustion gases, which are then drawn out through the annular channel. Compared to perforated air outlets in related technologies, this design simplifies the burner cap manufacturing process, reduces manufacturing costs, decreases airflow resistance, and enhances the burner's airflow capacity. Furthermore, the combustion gases drawn out through the annular channel, under the action of the burner's igniter, generate an annular flame facing inwards. This annular flame envelops the bottom of the pot, allowing secondary air to be fully replenished from both sides of the flame, ensuring complete combustion of the combustion gas, reducing harmful smoke emissions, and improving the stove's thermal efficiency. Additionally, because the annular channel's air outlet direction is towards the central axis of the burner cap, the flame formed by this burner has an inward-cage posture, generating heat energy at the center of the cookware's bottom, thus improving the heating effect and demonstrating excellent practicality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the flame cover in one or more embodiments of this application is shown;

[0018] Figure 2 It shows Figure 1 A top-down view;

[0019] Figure 3 It shows Figure 2 A schematic diagram of the AA cross-section;

[0020] Figure 4 A schematic diagram of the inner ring flame cap with two flame outlet channels is shown.

[0021] Figure 5 Show Figure 4 A top-down view;

[0022] Figure 6 It shows Figure 5 A cross-sectional schematic diagram of BB;

[0023] Figure 7A schematic diagram of the structure of the outer ring flame cap and the inner ring flame cap with two flame outlet channels is shown;

[0024] Figure 8 It shows Figure 7 A top-down view;

[0025] Figure 9 It shows Figure 8 A schematic diagram of the CC cross-section;

[0026] Figure 10 It shows having Figure 1 The diagram shows the structure of the flame cap 100.

[0027] Figure 11 It shows Figure 10 An explosion diagram.

[0028] Explanation of reference numerals in the attached figures:

[0029] Flame cap-100, outer ring flame cap-100a, inner ring flame cap-100b, mixing chamber-101, annular channel-102, separator plate-103, flame outlet channel-104, gas equalization plate-105, gas equalization hole-106, gathering part-107.

[0030] Base - 200, air intake chamber - 201;

[0031] Gas distribution plate -300;

[0032] Internal ejector tube -400;

[0033] External ejector tube - 500. Detailed Implementation

[0034] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] Gas stoves are essential kitchen appliances in the cooking process, and burners are the key components that enable cooking. In related technologies, burner orifices generally come in several forms: round, square, and strip-shaped. Round and strip-shaped orifices are machined, requiring dozens of orifices on a single burner cap to ensure heat intensity. This results in low production efficiency, significant material waste, and high processing costs. Square orifices are typically forged, but due to the large number of orifices and tolerance requirements, high precision is required for the molds, leading to complex molds with short lifespans. Furthermore, the aforementioned orifices are all independent small holes, making them difficult to clean once clogged.

[0036] Compared to direct flame and swirling flame, annular flame has more advantages. When the burner is working, there is an upward-opening annular flame gap channel between the inner and outer annular flame caps. Secondary air can be fully replenished from both sides of the annular flame gap. Multiple rings of gap flame can be formed between the inner and outer annular flame caps, ensuring complete combustion of gas, reducing the emission of harmful smoke, and improving the thermal efficiency of the stove.

[0037] Based on the above design concept, this application provides a flame cover. Figure 1 A schematic diagram of the structure of the flame cover in one or more embodiments of this application is shown. Figure 2 It shows Figure 1 A top-down view diagram. Figure 3 It shows Figure 2 A schematic diagram of the AA cross-section. Combined with... Figures 1-3 The burner cap 100 provided in this application has a built-in mixing chamber 101. The combustion surface of the burner cap 100 is provided with an annular channel 102, which is connected to the mixing chamber 101. The combustion gas and primary air are mixed in the mixing chamber 101 to form combustion gas, which is then led out through the annular channel 102. Compared with the perforated air outlet in related technologies, the setting of the annular channel 102 not only simplifies the processing technology of the burner cap 100 and reduces manufacturing costs, but also reduces air outlet resistance and improves the air intake capacity of the burner. In addition, the combustion gas led out through the annular channel 102 generates an annular flame under the action of the burner igniter. Secondary air can be fully replenished from both sides of the flame, the combustion gas is fully burned, the emission of harmful smoke is reduced, and the thermal efficiency of the stove is improved. Furthermore, compared with the perforated structure of the burner holes, the structure of the annular channel 102 is not easy to clog and is easy to clean, which has good practicality.

[0038] Combination Figures 1-3According to one embodiment of this application, the exhaust direction of the annular channel 102 is towards the central axis of the burner cap 100, meaning the flame generated by the burner faces inwards, forming an inner cage shape. This generates heat energy at the center of the bottom of the cookware, improving the heating effect. The slope of the exhaust direction of the annular channel 102 is α, where 90° > α > 0°. Preferably, 90° > α ≥ 45°, meaning the slope of the inner cage flame is above 45°, so that the flame in the inner cage is concentrated at the bottom of the cookware, improving the heating effect on the bottom of the cookware and thus improving the cooking effect on the food inside the cookware.

[0039] According to one embodiment of this application, the burner cap 100 has two or more annular channels 102 arranged along its radial direction, thereby creating two or more annular flame patterns and improving the heating effect on the cookware. In another embodiment, the burner cap 100 may have only one annular channel 102.

[0040] In one embodiment, where the burner cap 100 has two or more annular channels 102, the slope of the outlet direction of at least some of the annular channels 102 is inconsistent. For example, there may be two annular channels 102, one with a slope of 60° and the other with a slope of 75°; or, there may be two or three annular channels 102, two with a slope of 60° and the other with a slope of 75°. In another embodiment, the slope of the outlet direction of two or more annular channels 102 is consistent. For example, there may be two annular channels 102, both with a slope of 60°. The slope of the outlet direction of the annular channels 102 can be designed according to the height of the burner cap 100, and this application does not impose any limitations on this.

[0041] Figure 4 A schematic diagram of the structure of the inner ring flame cap 100b with two flame outlet channels 104 is shown. Figure 5 Show Figure 4 A top-down view diagram. Figure 6 It shows Figure 5 A cross-sectional diagram of BB. Figure 7 A schematic diagram of the structure of an outer ring flame cap 100a and an inner ring flame cap 100b having two flame outlet channels 104 is shown. Figure 8 It shows Figure 7 A top-down view diagram. Figure 9 It shows Figure 8 A schematic diagram of the CC cross-section. Combined with... Figures 4-9According to one embodiment of this application, an annular partition plate 103 is provided within the annular channel 102. The partition plate 103 and the two side walls of the annular channel 102 are spaced apart to divide the annular channel 102 into two independent flame outlet channels 104. This further divides each annular channel 102 of the burner cap 100 into two annular flame outlet channels 104, thereby enabling each burner cap to form more annular flame patterns and improving the heating effect on the cookware. In another embodiment, two or more annular partition plates 103 may be provided within the annular channel 102 to divide the annular channel 102 into two independent flame outlet channels 104. This further divides each annular channel 102 of the burner cap 100 into three annular flame outlet channels 104, wherein the number of flame outlet channels 104 is one more than the number of partition plates 103.

[0042] Combination Figure 3 , Figure 6 According to an embodiment of this application, at least one flame outlet channel 104 is provided with a gas equalization plate 105, and a plurality of gas equalization holes 106 are provided on the gas equalization plate 105 at intervals, so that the combustion gas mixed with primary air in the mixing chamber 101 can enter the flame outlet channel 104 evenly through the plurality of gas equalization holes 106, thereby improving the airflow output and the uniformity of combustion. The provision of a gas equalization plate 105 in at least one flame outlet channel 104 means that a gas equalization plate 105 is provided in each flame outlet channel 104, or that a gas equalization plate 105 is provided only in some of the flame outlet channels 104.

[0043] Combination Figure 3 as well as Figure 6 In some embodiments, with the burner cap 100 having two or more flame outlet channels 104, and each flame outlet channel 104 having a gas equalization plate 105, there can be a height difference between adjacent gas equalization plates 105. That is, the heights of the gas equalization plates 105 in two adjacent flame outlet channels 104 in each burner cap 100 are different. This allows the volumes of the mixing chambers 101 below the two adjacent gas equalization plates 105 to be different, so that the mixing chamber 101 below the higher gas equalization plate 105 can store more fuel gas mixed with primary air, thereby improving the combustion efficiency of the burner.

[0044] Combination Figures 1-9In one embodiment, the burner provided in this application has two burner caps 100 arranged radially along the burner cap 100. The two burner caps 100 are an outer ring burner cap 100a and an inner ring burner cap 100b. Both the outer ring burner cap 100a and the inner ring burner cap 100b are provided with at least one annular channel 102. Each annular channel 102 includes at least two flame outlet channels 104, so that the burner forms at least four ring flames during operation, thereby improving the combustion efficiency of the burner. In another embodiment, only one burner cap 100 may be provided. When only one burner cap 100 is provided, the burner cap 100 may be provided with reference to the inner ring burner cap 100b or the outer ring burner cap 100a described below, which will not be elaborated here. Refer to the appendix. Figure 1 -Appendix Figure 9 Further details of the burner having an inner ring burner cap 100b and an outer ring burner cap 100a are described.

[0045] Combination Figures 1-9 According to one embodiment of this application, the outer ring flame cap 100a is an integrally formed structure, and the outer ring flame cap 100a is a through columnar structure. Grooves are cut on both the inner and outer sides of the top of the outer ring flame cap 100a to form a gathering portion 107 at the top. The vertical projection of the gathering portion 107 is located inside the outer ring flame cap 100a. The cross-section of the top of the outer ring flame cap 100a located inside the gathering portion 107 is the combustion surface of the outer ring flame cap 100a. The outer ring flame cap 100a has an annular channel 102, and the opening of the annular channel 102 faces the gathering portion. On the inner side of the gathering part 107, the bottom of the annular channel 102 extends outward from the bottom of the gathering part 107. The gas equalization plate 105 of the outer ring burner cap 100a is arranged in a horizontal direction. The partition plate 103 of the outer ring burner cap 100a is connected to the middle of the top of the gas equalization plate 105. The partition plate 103 of the outer ring burner cap 100a has the same slope as the annular channel 102. The mixing chamber 101 of the outer ring burner cap 100a is located at the bottom of the gas equalization plate 105. The two side walls of the bottom of the outer ring burner cap 100a are provided with a first step to support the gas distribution plate 300 of the burner.

[0046] Combination Figures 1-9 According to one embodiment of this application, the inner ring burner cap 100b and the outer ring burner cap 100a have largely the same structural form. The main difference between the inner ring burner cap 100b and the outer ring burner cap 100a is that the inner ring burner cap 100b is a split structure, the inner sidewall of the inner ring burner cap 100b is separate from the inner ring burner cap 100b, and the bottom of both the outer sidewall and the inner sidewall of the inner ring burner cap 100b are provided with a second step to support it on the gas distribution plate 300 of the burner.

[0047] Combination Figure 6 as well as Figure 9According to one embodiment of this application, the heights of the equalizing discs 105 in the two flame outlet channels 104 of the inner ring burner cap 100b are different, and the vent holes on the separator 103 are disposed between the two equalizing discs 105 at different heights. In specific implementation, in the inner ring burner cap 100b, the heights of the equalizing discs 105 in the outer flame outlet channel 104 and the heights of the equalizing discs 105 in the inner flame outlet channel 104 are different. This allows the volumes of the mixing chambers 101 below the equalizing discs 105 on both sides to be different, so that the mixing chamber 101 below the higher equalizing disc 105 can store more combustion gas mixed with primary air, thereby improving the combustion efficiency of the burner.

[0048] According to one embodiment of this application, a vent hole (not shown) is provided on the partition plate 103 on the inner ring burner cap 100b. The vent hole is located between two equalizing plates 105 of different heights, so that the gas mixture containing primary air in the mixing chamber 101 below the higher equalizing plate 105 flows into the upper part of the lower equalizing plate 105, thereby supplementing the upper part of the lower equalizing plate 105 with the gas mixture containing primary air, and improving the combustion efficiency of the flame outlet channel 104 located above the lower equalizing plate 105.

[0049] It should be noted that the outer ring flame cap 100a of this application can also be set with reference to the inner ring flame cap 100b, or the inner ring flame cap 100b can be set with reference to the outer ring flame cap 100a, which will not be elaborated here.

[0050] Based on the same design concept, in a second aspect of this application, this application also provides a burner that includes the aforementioned burner cap 100.

[0051] The burner with the aforementioned burner cap 100, due to the setting of the annular channel 102 on the combustion surface of the burner cap 100, not only simplifies the processing technology of the burner cap 100 and reduces manufacturing costs, but also reduces air outlet resistance and improves the induced draft capacity of the burner; in addition, the combustion gas drawn out through the annular channel 102 generates an annular flame facing the inside of the burner under the action of the burner igniter, and secondary air can be fully replenished from both sides of the flame, the gas is fully combusted, the emission of harmful smoke is reduced, and the thermal efficiency of the stove is improved, which has great practicality.

[0052] Figure 10 It shows having Figure 1 The schematic diagram of the structure of the fire cap 100 shown is as follows. Figure 11 It shows Figure 10 A schematic diagram of the explosion. Combined with... Figure 10 as well as Figure 11The burner of this application also includes a base 200, a gas distribution plate 300, an inner ejector pipe 400, and an outer ejector pipe 500. The base 200 is provided with an inner ring air inlet chamber 201 and an outer ring air inlet chamber 201. The inner ejector pipe 400 and the outer ejector pipe 500 are respectively connected to the periphery of the base 200 and communicate with the inner and outer ring air inlet chambers 201 of the base 200, respectively. The gas distribution plate 300 is supported on the base 200, and both the outer ring burner cap 100a and the inner ring burner cap 100b are supported on the gas distribution plate. On the 300, the gas introduced by the inner ejector pipe 400 is injected into the mixing chamber 101 of the inner ring burner 100b through the inner ring intake chamber 201 and the gas distribution plate 300. After being mixed with primary air, it is output to the ignition channel 104 on the inner ring burner 100b for combustion. The gas introduced by the outer ejector pipe 500 is injected into the mixing chamber 101 of the outer ring burner 100a through the outer ring intake chamber 201 and the gas distribution plate 300. After being mixed with primary air, it is output to the ignition channel 104 on the outer ring burner 100a for combustion.

[0053] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A flame cap, characterized in that, The burner cap has a built-in mixing chamber, and the combustion surface of the burner cap is provided with an annular channel. The annular channel is connected to the mixing chamber, and the gas outlet direction of the annular channel is towards the central axis of the burner cap.

2. The flame cap according to claim 1, characterized in that, The slope of the air outlet direction of the annular channel is α, where 90°>α>0°.

3. The flame cap according to claim 2, characterized in that, 90°＞α≥45°。 4. The flame cap according to any one of claims 1-3, characterized in that, Along the radial direction of the flame cap, the flame cap is provided with two or more annular channels.

5. The flame cap according to claim 4, characterized in that, At least some of the annular channels have inconsistent slopes in the air outlet direction, or two or more of the annular channels have consistent slopes in the air outlet direction.

6. The flame cap according to claim 5, characterized in that, The annular channel is provided with an annular partition plate, and the partition plate and the two side walls of the annular channel are spaced apart to divide the annular channel into multiple independent fire outlet channels.

7. The flame cap according to claim 6, characterized in that, At least one of the fire outlet channels is provided with a gas equalization plate, and the gas equalization plate is provided with a plurality of gas equalization holes at intervals.

8. The flame cap according to claim 7, characterized in that, There is a height difference between some of the gas distribution discs.

9. The flame cap according to any one of claims 1-3 and 5-7, characterized in that, The flame cap is integrally formed, or the flame cap is a split structure.

10. A burner, characterized in that, Includes the fire cap as described in any one of claims 1-9.

11. The burner according to claim 10, characterized in that, Along the radial direction of the burner, there are two or more flame caps, and at least one flame cap is provided with the annular channel.

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