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 arranged in the burner cap, an annular channel is arranged on the burning face of the burner cap and communicated with the gas mixing cavity, and the gas outlet direction of the annular channel is opposite to the center shaft of the burner cap. Due to the fire outlet form of the annular channel arranged on the combustion surface of the fire cover, the processing technology of the fire cover is simplified, the manufacturing cost is reduced, the air outlet resistance is reduced, and the air inducing capacity of the combustor is improved; besides, combustion gas led out through the annular channel generates annular flames facing the outer portion of the combustor under the action of an igniter of the combustor, secondary air can be fully supplemented from the two sides of the flames, gas is fully combusted, emission of harmful smoke is reduced, the heat efficiency of the stove is 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 burner cap is provided, wherein the burner cap has a built-in mixing chamber, 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 opposite to the central axis of the burner 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 two independent fire exit channels.

[0010] In some implementations, the separator plate is provided with a plurality of vent holes spaced circumferentially around the separator plate.

[0011] In some implementations, a gas equalization plate is provided in the fire outlet channel, and a plurality of gas equalization holes are provided on the gas equalization plate at intervals.

[0012] In some implementations, the heights of the gas distribution plates in the two fire outlet channels within each of the annular channels are different.

[0013] In some implementations, the vents on the separator are located between two equalizing discs at different heights.

[0014] In some embodiments, at least a portion of the outlet end of the gas equalization hole in at least part of the fire outlet channel is formed on the side wall of the fire outlet channel.

[0015] In a second aspect, this application also provides a burner comprising the aforementioned flame cap.

[0016] 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.

[0017] The burner provided in this application features a built-in mixing chamber in its burner cap, with an annular channel on the burner surface. This annular channel connects to the mixing chamber, where fuel gas and primary air mix to form combustion gases, which are then drawn out through the annular channel. Compared to the perforated air outlets in related technologies, the annular channel simplifies the burner cap manufacturing process, reduces manufacturing costs, and decreases airflow resistance, thus improving 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 outwards. Secondary air can be fully replenished from both sides of the flame, ensuring complete combustion of the fuel gas, reducing harmful smoke emissions, and improving the stove's thermal efficiency, making it highly practical. Attached Figure Description

[0018] 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.

[0019] Figure 1 A schematic diagram of the structure of the flame cover in one or more embodiments of this application is shown;

[0020] Figure 2 It shows Figure 1 A top-down view;

[0021] Figure 3 It shows Figure 2 A schematic diagram of the AA cross-section;

[0022] Figure 4 It shows Figure 1 A schematic diagram of the inner ring flame cap structure;

[0023] Figure 5 It shows Figure 4 Top view;

[0024] Figure 6 It shows Figure 5 A cross-sectional schematic diagram of BB;

[0025] Figure 7 It shows Figure 1 A schematic diagram of the outer ring flame cap structure;

[0026] Figure 8 It shows Figure 7 Top view;

[0027] Figure 9 It shows Figure 8 A cross-sectional schematic diagram of CC;

[0028] Figure 10 It shows having Figure 1 The diagram shown is a structural schematic of the flame cap.

[0029] Figure 11 It shows Figure 10 An explosion diagram.

[0030] Explanation of reference numerals in the attached figures:

[0031] Flame cap-100, inner ring flame cap-100a, outer ring flame cap-100b, mixing chamber-101, annular channel-102, separator plate-103, flame outlet channel-104, vent hole-105, gas equalization plate-106, gas equalization hole-107, gathering part-108.

[0032] Base - 200, air intake chamber - 201;

[0033] Gas distribution plate -300;

[0034] Internal ejector tube -400;

[0035] External ejector tube - 500. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] Compared to direct flame and swirling flame, annular flame has more advantages. When the burner is working, the inner and outer annular flame caps have upward-opening annular flame gap channels, and secondary air can be fully supplied from both sides of the annular flame gaps. The burner can generate multiple rings of gap flames, ensuring complete combustion of the gas, reducing the emission of harmful smoke, and improving the thermal efficiency of the stove.

[0039] Based on the above design concept, this application provides a flame cover. Figure 1 The diagram shows a structural schematic of the flame cover 100 in one or more embodiments of this application. Figure 2 It shows Figure 1 A top-down view. Figure 3 It shows Figure 2 A schematic diagram of the AA cross-section. Combined with... Figures 1-3 The burner cap 100 of 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 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 facing outwards from the burner under the action of the burner igniter. 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. 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.

[0040] According to one embodiment of this application, the exhaust direction of the annular channel 102 is opposite to the central axis of the burner cap 100, meaning the annular flame formed by the burner faces outwards, causing the annular flame to overflow. Specifically, 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 overflowing flame is above 45°, so that the overflowing flame is nearly parallel to the bottom of the cookware, ensuring sufficient heating area at the bottom of the cookware and improving the heating effect. Specifically, the slope α of the exhaust direction of the annular channel 102 can be 45°, 60°, 80°, etc.

[0041] 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.

[0042] 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.

[0043] Combination Figure 3 According 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 flame cap 100 into two annular flame outlet channels 104, thereby forming 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 each annular channel 102 to divide the annular channel 102 into three or more independent flame outlet channels 104.

[0044] Combination Figure 3According to one embodiment of this application, a plurality of vent holes 105 are provided circumferentially around the partition plate 103, thereby connecting two combustion channels 104 through the plurality of vent holes 105. This allows the combustion gas mixed with primary air in the two combustion channels 104 to flow through the plurality of vent holes 105, thereby balancing the combustion gas in the two combustion channels 104 and improving combustion efficiency. In specific implementations, the plurality of vent holes 105 may be arranged in a ring shape, and more than two vent holes may be provided.

[0045] Combination Figure 3 According to one embodiment of this application, at least one flame outlet channel 104 is provided with a gas equalization plate 106, and a plurality of gas equalization holes 107 are provided on the gas equalization plate 106 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 107, thereby improving the airflow output and the uniformity of combustion. The provision of a gas equalization plate 106 in at least one flame outlet channel 104 means that a gas equalization plate 106 is provided in each flame outlet channel 104, or that a gas equalization plate 106 is provided only in some of the flame outlet channels 104.

[0046] Combination Figure 3 According to one embodiment of this application, at least a portion of the outlet end of the uniform air distribution hole 107 in at least a portion of the flame outlet channel 104 is formed on the side wall of the flame outlet channel 104, so that the combustion gas mixed with primary air ejected through the outlet end of the uniform air distribution hole 107 travels as far as possible along the side wall of the flame outlet channel 104, thereby increasing the width of the flame formed by the flame outlet channel 104 and increasing the combustion area. "At least a portion of the outlet end of the uniform air distribution hole 107 in at least a portion of the flame outlet channel 104 is formed on the side wall of the flame outlet channel 104" means that the outlet end of each uniform air distribution hole 107 in the flame outlet channel 104 is formed on the side wall of the flame outlet channel 104, or that the outlet end of the uniform air distribution hole 107 in the flame outlet channel 104 is formed on the side wall of the flame outlet channel 104.

[0047] Combination Figures 1-3 In 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 100b and an inner ring burner cap 100a. Both the outer ring burner cap 100b and the inner ring burner cap 100a 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 100a or the outer ring burner cap 100b described below, which will not be elaborated here. Now, by way of the appendix Figure 4 - Appendix Figure 9Further details of the burner having an inner ring burner cap 100a and an outer ring burner cap 100b are described.

[0048] Figure 4 It shows Figure 1 A schematic diagram of the inner ring fire cap 100a in the diagram. Figure 5 It shows Figure 4 Top view, Figure 6 It shows Figure 5 A cross-sectional diagram of BB. Combined with... Figures 4-6 According to one embodiment of this application, the inner ring flame cap 100a is an integrally formed structure, and the inner ring flame cap 100a is a through columnar structure. Grooves are cut on both the inner and outer sides of the top of the inner ring flame cap 100a to form a gathering portion 108 at the top. The vertical projection of the gathering portion 108 is located inside the inner ring flame cap 100a. The cross-section of the top of the inner ring flame cap 100a located inside the gathering portion 108 is the combustion surface of the inner ring flame cap 100a. The inner ring flame cap 100a has an annular channel 102, the opening of which faces the outer side of the gathering portion 108. The bottom of the annular channel 102... The inner ring burner cap 100a extends inward to the bottom of the gathering section 108. The gas equalization plate 106 of the inner ring burner cap 100a is arranged in a horizontal direction. The gas outlet end of the gas equalization hole 107 on the gas equalization plate 106 is located on the outer wall of the flame outlet channel 104. The partition plate 103 of the inner ring burner cap 100a is connected to the middle of the top of the gas equalization plate 106. The partition plate 103 of the inner ring burner cap 100a has the same slope as the annular channel 102. The mixing chamber 101 of the inner ring burner cap 100a is located at the bottom of the gas equalization plate 106. The two side walls of the bottom of the inner ring burner cap 100a are provided with a first step to support the gas distribution plate 300 of the burner.

[0049] Figure 7 It shows Figure 1 A schematic diagram of the structure of the outer ring fire cap 100b. Figure 8 It shows Figure 7 Top view, Figure 9 It shows Figure 8 A cross-sectional view of CC. Combined with... Figures 7-9 According to one embodiment of this application, the outer ring burner cap 100b and the inner ring burner cap 100a have largely the same structural form. The main difference between the outer ring burner cap 100b and the inner ring burner cap 100a is that the outer ring burner cap 100b is a split structure, the inner sidewall of the outer ring burner cap 100b is separate from the inner sidewall, and the bottom of both the outer sidewall and the inner sidewall of the outer ring burner cap 100b are provided with a second step to support it on the gas distribution plate 300 of the burner.

[0050] Combination Figure 9According to one embodiment of this application, the heights of the equalizing discs 106 in the two flame outlet channels 104 of the outer ring burner cap 100b are different, that is, the height of the equalizing disc 106 in the outer flame outlet channel 104 is higher than the height of the equalizing disc 106 in the inner flame outlet channel 104. The vent 105 on the separator 103 is disposed between the two equalizing discs 106 with different heights. In specific implementation, in the outer ring burner cap 100b, the heights of the equalizing discs 106 in the outer flame outlet channel 104 and the heights of the equalizing discs 106 in the inner flame outlet channel 104 are different. This allows the volumes of the mixing chambers 101 below the equalizing discs 106 on both sides to be different, so that the mixing chamber 101 below the higher equalizing disc 106 can store more fuel gas mixed with primary air, thereby improving the combustion efficiency of the burner.

[0051] Combination Figure 9 According to one embodiment of this application, the vent 105 on the partition plate 103 on the outer ring flame cap 100b is disposed between two equalizing plates 106 of different heights, so that the gas mixture containing primary air in the mixing chamber 101 below the higher equalizing plate 106 flows into the upper part of the lower equalizing plate 106, thereby supplementing the upper part of the lower equalizing plate 106 with the gas mixture containing primary air, and improving the combustion efficiency of the flame outlet channel 104 located above the lower equalizing plate 106.

[0052] It should be noted that the outer ring flame cap 100b of this application can also be set with reference to the inner ring flame cap 100a, or the inner ring flame cap 100a can be set with reference to the outer ring flame cap 100b, which will not be elaborated here.

[0053] 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.

[0054] 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 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 outwards from the burner under the action of the burner igniter, and secondary air can be fully replenished from both sides of the flame, ensuring complete combustion of the gas, reducing the emission of harmful smoke, and improving the thermal efficiency of the stove, thus having excellent practicality.

[0055] 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 ring air inlet chamber 201 and the outer ring air inlet chamber 201 of the base 200, respectively. The gas distribution plate 300 is supported on the base 200, and both the outer ring burner cap 100b and the inner ring burner cap 100a 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 100a 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 100a for combustion. The gas introduced by the outer ejector pipe 500 is injected into the mixing chamber 101 of the outer ring burner 100b 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 100b for combustion.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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 opposite to 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 claim 1, 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, 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.

6. The flame cap according to claim 4, 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 two independent fire outlet channels.

7. The flame cap according to claim 6, characterized in that, The separator plate has multiple vent holes spaced around its circumference.

8. The flame cap according to claim 6, characterized in that, A gas equalization plate is provided inside the fire outlet channel, and multiple gas equalization holes are provided on the gas equalization plate at intervals.

9. The flame cap according to claim 8, characterized in that, The heights of the gas distribution plates in the two fire outlet channels within each of the annular channels are different.

10. The flame cap according to claim 9, characterized in that, The ventilation holes on the separator are located between two air distribution discs at different heights.

11. The flame cap according to claim 8, characterized in that, At least a portion of the outlet end of the uniform air hole in the fire outlet channel is formed on the side wall of the fire outlet channel.

12. A burner, characterized in that, Includes the fire cap as described in any one of claims 1-11.

13. The burner according to claim 12, 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.

Images