Burner caps and gas cookers

Abstract

The present invention provides a burner fire cover and a gas stove, which relate to the technical field of gas stoves. The burner fire cover comprises a gas separation seat and a fire cover detachably seated on the gas separation seat, and the fire cover comprises an inner ring fire cover and an outer ring fire cover arranged on the outer peripheral side of the inner ring fire cover; the gas separation seat has an inner ring fire mixing chamber and a middle ring fire mixing chamber separated from each other; the outer peripheral wall of the inner ring fire cover is provided with an inner ring fire outlet hole, a middle ring fire outlet hole and a fire protection hole, the inner ring fire outlet hole and the fire protection hole are both connected to the inner ring fire mixing chamber, and the middle ring fire outlet hole is connected to the middle ring fire mixing chamber. The gas stove comprises a burner fire cover. The burner fire cover alleviates the technical problem that the fire protection structure is arranged on the inner side of the inner ring fire cover in the prior art, and the changes in the pot and the gas pressure make the flame of the fire protection structure unstable, thereby achieving the technical effect of stabilizing the flame.

Description

Technical Field

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

[0002] At present, the burner includes an outer ring fire cover and an inner ring fire cover, wherein the inner ring fire cover is located at the center of the burner (also called the central fire cover). Usually the inner ring fire cover is installed on the gas distributor seat and fits tightly with the gas distributor seat. The fire outlet holes of the inner ring fire cover are arranged on its outer side wall (fire is only emitted from all four sides).

[0003] In the prior art, a flame protection hole can be provided on the inner ring fire cover of the stove burner. The flame protection hole heats the tip of the flame extinguishing needle, so that the flame extinguishing needle can determine whether the stove burner is in a normal working state. When the stove burner is accidentally extinguished, the flame at the flame protection hole is also extinguished at the same time, causing the temperature of the detection end of the flame extinguishing needle to be lower than the threshold value, and the flame extinguishing needle cuts off the gas supply to achieve the flame extinguishing protection function. Generally, the flame protection structure is provided on the inner side of the inner ring fire cover, and the changes in the pot and the gas pressure make the flame of the flame protection structure unstable. Summary of the invention

[0004] The object of the present invention is to provide a burner fire cover and a gas cooker to alleviate the technical problem in the prior art that a fire protection structure is arranged on the inner side of an inner ring fire cover and changes in the pot and gas pressure make the flame of the fire protection structure unstable.

[0005] In a first aspect, the present invention provides a burner fire cover, comprising: a gas distribution seat and a fire cover detachably seated on the gas distribution seat, wherein the fire cover comprises an inner ring fire cover and an outer ring fire cover arranged on the outer peripheral side of the inner ring fire cover;

[0006] The gas distributor seat has an inner ring fire gas mixing chamber and a middle ring fire gas mixing chamber separated from each other;

[0007] The outer peripheral wall of the inner ring fire cover is provided with an inner ring fire outlet hole, a middle ring fire outlet hole and a fire protection hole. The inner ring fire outlet hole and the fire protection hole are both connected to the inner ring fire mixing chamber, and the middle ring fire outlet hole is connected to the middle ring fire mixing chamber.

[0008] Furthermore, the inner ring fire outlet hole, the middle ring fire outlet hole and the fire protection hole are arranged in sequence from top to bottom, and the three are arranged in sequence outward along the radial direction of the inner ring fire cover.

[0009] Furthermore, the number of the fire protection holes is three, and the three fire protection holes are a middle fire protection hole arranged in the middle position, a first side fire protection hole and a second side fire protection hole arranged on both sides of the middle fire protection hole.

[0010] Furthermore, the inner ring fire cover is projected vertically from the front, the angle between the middle fire protection hole and the horizontal axis is 0°, and the angle between the first side fire protection hole and the second side fire protection hole and the horizontal axis is in the range of 5 to 45°;

[0011] When the inner ring fire cover is projected along the side, the angle between the middle fire protection hole and the vertical axis is 90°, and the angle between the first side fire protection hole and the second side fire protection hole and the vertical axis is in the range of 25 to 70°.

[0012] Furthermore, the inner ring fire cover is provided with an air transfer hole, and the middle fire protection hole is connected with the inner ring fire mixing chamber through the air transfer hole;

[0013] The first side fire protection hole and the second side fire protection hole are directly connected to the inner ring fire mixing cavity respectively.

[0014] Furthermore, an ignition hole is provided just above the fire protection hole and on the circumference of the middle ring fire outlet hole, and the ignition hole is communicated with the middle ring fire mixing chamber.

[0015] Furthermore, the outlet ends of the ignition hole and the middle ring fire outlet hole are both arranged on the outer conical surface of the inner ring fire cover;

[0016] The outlet end of the fire protection hole is arranged on the outer cylindrical surface of the inner ring fire cover.

[0017] Furthermore, the ignition holes are provided with two, and the two ignition holes are respectively a first ignition hole and a second ignition hole;

[0018] The inner ring fire cover is vertically projected from the front, and the angles between the first ignition hole and the second ignition hole and the horizontal axis are both in the range of 10 to 45 degrees;

[0019] When the inner ring fire cover is projected along the side, the angles between the first ignition hole and the second ignition hole and the vertical axis are both in the range of 10 to 50 degrees.

[0020] Furthermore, the air separator seat comprises an inner air separator ring, a middle air separator ring and an outer air separator ring which are concentrically and sequentially spaced apart;

[0021] The middle air-isolating ring has a notch, the side edge of which protrudes radially outwards to closely abut against the inner side wall of the outer air-isolating ring, and closely matches with the bottom surface of the inner ring fire cover at the notch to form a drainage groove;

[0022] The inlet end of the fire protection hole is located on the bottom surface of the inner ring fire cover and is located in the drainage groove.

[0023] Furthermore, the inner ring fire outlet hole comprises a connecting hole and an air outlet groove which are sequentially connected along the gas flow direction, the connecting hole is arranged obliquely relative to the center line of the inner ring fire cover, and the distance between the connecting hole and the center line of the inner ring fire cover gradually decreases from bottom to top;

[0024] The air outlet groove is arranged to be inclined from high to low from inside to outside.

[0025] Beneficial effects:

[0026] The burner fire cover provided by the present invention has an air dividing seat with an inner ring fire mixing chamber and a middle ring fire mixing chamber separated from each other; the inner ring fire fire outlet hole and the fire protection hole are both connected with the inner ring fire mixing chamber. Therefore, the air-mixed gas can pass through the inner ring fire mixing chamber on the air dividing seat, a part of which flows out through the inner ring fire fire outlet hole, and the other part flows out through the fire protection hole. Since the middle ring fire outlet hole is connected with the middle ring fire mixing chamber, the air-mixed gas can pass through the middle ring fire mixing chamber on the air dividing seat and flow out from the middle ring fire outlet hole, thereby realizing independent transportation of the inner ring air-mixed gas and the middle ring air-mixed gas; the burner fire cover of the present invention is connected with the fire protection hole through the inner ring fire mixing chamber, so that the fire protection hole can be led out to the outer area of ​​the inner ring fire cover. Compared with the prior art in which the fire protection hole is set on the inside, during the use of the burner fire cover, changes in the cookware and air pressure will not affect the flame at the fire protection hole, thereby enabling the flame at the fire protection hole to remain stable.

[0027] In a second aspect, the present invention provides a gas cooker, comprising: a burner fire cover as described in any one of the aforementioned embodiments.

[0028] Beneficial effects:

[0029] The gas cooker provided by the present invention includes the aforementioned burner fire cover, and thus the technical advantages and effects that can be achieved by the gas cooker also include the technical advantages and effects that can be achieved by the burner, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of a partial structure of a gas cooker provided in an embodiment of the present invention;

[0032] Figure 2 It is a cross-sectional view of a part of the structure of the gas cooker;

[0033] Figure 3This is a schematic diagram of the front structure of the gas distributor;

[0034] Figure 4 This is a schematic diagram of the front structure of the inner ring fire cover;

[0035] Figure 5 This is a schematic diagram of the reverse structure of the inner ring fire cover;

[0036] Figure 6 for Figure 4 A top view of the inner ring fire cover shown, wherein the drawing shows the positions of the first side fire protection holes and the second side fire protection holes;

[0037] Figure 7 This is one of the partial cross-sectional views of the inner ring fire cover;

[0038] Figure 8 for Figure 4 A top view of the inner ring fire cover shown, wherein the figure shows the positions of the first gas transfer hole and the second gas transfer hole;

[0039] Fig. 9 The second partial cross-sectional view of the inner ring fire cover;

[0040] Fig.10 It is a partial schematic diagram of the cooperation between the reverse side of the inner ring fire cover and the gas distributor seat.

[0041] icon:

[0042] 100-gas separator; 110-inner ring fire mixing chamber; 120-middle ring fire mixing chamber; 130-inner air separator ring; 140-middle air separator ring; 150-outer air separator ring;

[0043] 200-inner ring fire cover; 210-inner ring fire outlet hole; 220-middle ring fire outlet hole; 230-fire protection hole; 240-drainage groove; 211-connecting hole; 212-air outlet groove; 231-middle fire protection hole; 232-first side fire protection hole; 233-second side fire protection hole; 241-first air transmission hole; 242-second air transmission hole; 251-first fire introduction hole; 252-second fire introduction hole. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0051] Embodiment 1

[0052] Reference Figures 1 to 4, this embodiment 1 provides a burner fire cover, which includes a gas dividing seat 100 and a fire cover detachably seated on the gas dividing seat 100, the fire cover includes an inner ring fire cover 200 and an outer ring fire cover arranged on the outer peripheral side of the inner ring fire cover 200; the gas dividing seat 100 has an inner ring fire mixing chamber 110 and a middle ring fire mixing chamber 120 separated from each other; the outer peripheral wall of the inner ring fire cover 200 is provided with an inner ring fire outlet hole 210, a middle ring fire outlet hole 220 and a fire protection hole 230, the inner ring fire outlet hole 210 and the fire protection hole 230 are both connected to the inner ring fire mixing chamber 110, and the middle ring fire outlet hole 220 is connected to the middle ring fire mixing chamber 120.

[0053] The burner fire cover provided in this embodiment has an air distribution seat 100 having an inner ring fire mixing chamber 110 and a middle ring fire mixing chamber 120 separated from each other; the inner ring fire outlet hole 210 and the fire protection hole 230 are both connected to the inner ring fire mixing chamber 110, so that the air-mixed gas can pass through the inner ring fire mixing chamber 110 on the air distribution seat 100, a part of which flows out through the inner ring fire outlet hole 210, and the other part flows out through the fire protection hole 230. Since the middle ring fire outlet hole 220 is connected to the middle ring fire mixing chamber 120, the air-mixed gas can pass through the middle ring fire outlet hole 210 on the air distribution seat 100. The fire-gas mixing chamber 120 flows out from the middle ring fire outlet hole 220, realizing independent conveyance of the inner ring air mixture and the middle ring air mixture; the burner fire cover of this embodiment is connected with the fire keeping hole 230 through the inner ring fire mixing chamber 110, so as to realize leading the fire keeping hole 230 to the outer area of ​​the inner ring fire cover 200. Compared with the prior art that sets the fire keeping hole 230 on the inner side, during the use of the burner fire cover, the changes of the pot and the air pressure will not affect the flame at the fire keeping hole 230, so that the flame at the fire keeping hole 230 can be maintained stable.

[0054] In addition, the inner ring fire and the middle ring fire in this embodiment are controlled by different gas passages, so the maximum power of the inner ring fire can be reduced accordingly without affecting the thermal efficiency and the heating uniformity of the bottom of the pot. It can meet the daily low-fire needs of stewing soup, boiling soup, cooking porridge and heating milk, solve the problems of soup overflowing from the pot and burning heated food, and achieve the minimum fire power of 150 to 200W of the extreme low-fire power.

[0055] Among them, the inner ring fire outlet hole 210, the middle ring fire outlet hole 220 and the fire protection hole 230 are all arranged on the inner ring fire cover 200, and the position relationship of the three is as follows: Figure 2 and Figure 4The inner ring fire outlet hole 210, the middle ring fire outlet hole 220 and the fire protection hole 230 are arranged in sequence from top to bottom, and the three are arranged in sequence outward along the radial direction of the inner ring fire cover 200. Such an arrangement can enable the inner ring fire cover 200 to achieve two-ring fire, and together with the outer ring fire of the outer ring fire cover, three-ring fire can be achieved, so that the burner fire cover burns more fully and improves the uniformity of heating the bottom of the cookware. At the same time, the fire protection hole 230 is located on the outside of the middle ring fire outlet hole 220, that is, between the middle ring fire outlet hole 220 and the outer ring fire outlet hole (not marked in the figure), which can make the flame relatively stable and reduce the occurrence of flame separation.

[0056] In this embodiment, refer to Figure 4 and Figure 5 There are three fire protection holes 230 , which are a middle fire protection hole 231 arranged in the middle position, a first side fire protection hole 232 arranged on both sides of the middle fire protection hole 231 , and a second side fire protection hole 233 .

[0057] Among them, the three fire-keeping holes 230 can further play a role in stabilizing the flame, making the flame more stable and thus avoiding the problem of flame separation.

[0058] Specifically, refer to Figure 6 and Figure 7 , the inner ring fire cover 200 is projected vertically from the front, the angle between the middle fire protection hole 231 and the horizontal axis is 0°, the angle between the first side fire protection hole 232 and the second side fire protection hole 233 and the horizontal axis is in the range of 5 to 45°, and illustratively, the angle between the first side fire protection hole 232 and the second side fire protection hole 233 and the horizontal axis can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°, etc.; the inner ring When the fire cover 200 is projected along the side, the angle between the middle fire protection hole 231 and the vertical axis is 90°, and the angle between the first side fire protection hole 232 and the second side fire protection hole 233 and the vertical axis ranges from 25 to 70°. Exemplarily, the angle between the first side fire protection hole 232 and the second side fire protection hole 233 and the vertical axis can be 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65° or 70°, etc.

[0059] Furthermore, when viewed from the front and downward, the distance between the first side fire protection hole 232 and the second side fire protection hole 233 gradually decreases from the outside to the inside, forming an "inward eight" arrangement.

[0060] In order to realize the aforementioned arrangement of the middle fire protection hole 231, the first side fire protection hole 232 and the second side fire protection hole 233 and to shorten the communication path, an air transfer hole is provided on the inner ring fire cover 200, and the middle fire protection hole 231 is connected with the inner ring fire mixing chamber 110 through the air transfer hole; the first side fire protection hole 232 and the second side fire protection hole 233 are directly connected with the inner ring fire mixing chamber 110 respectively.

[0061] During specific use, the air-mixed gas can enter the inner ring fire cover 200 through the inner ring fire mixing cavity 110. Specifically, a part of the air-mixed gas enters the middle fire protection hole 231 through the gas transfer hole, and flows out from the middle fire protection hole 231; the other part of the air-mixed gas directly enters the first side fire protection hole 232 and the second side fire protection hole 233, and flows out from the first side fire protection hole 232 and the second side fire protection hole 233.

[0062] Specifically, there are two air transfer holes, namely a first air transfer hole 241 and a second air transfer hole 242 , wherein the two are spaced apart and their inner diameters can be set to be different, and both are connected to the middle fire protection hole 231 .

[0063] Furthermore, an ignition hole is provided just above the fire protection hole 230 and on the circumference of the middle ring fire outlet hole 220, and the ignition hole is connected to the middle ring fire mixing chamber 120. The advantage of such a setting is that the fire transfer speed can be made faster when a small fire is turned into a large fire or when a large fire is turned into a small fire.

[0064] Specifically, a plurality of inner ring fire holes 210 are spaced apart along the circumference of the inner ring fire cover 200; a plurality of middle ring fire holes 220 are also spaced apart along the circumference of the inner ring fire cover 200, wherein an ignition hole is provided between two middle ring fire holes 220 and on the same circumference.

[0065] Among them, the outlet ends of the ignition hole and the middle ring fire outlet hole 220 are both arranged on the outer conical surface of the inner ring fire cover 200; the outlet end of the fire protection hole 230 is arranged on the outer cylindrical surface of the inner ring fire cover 200.

[0066] More specifically, see Figure 8 and Fig. 9, two ignition holes are provided, and the two ignition holes are respectively the first ignition hole 251 and the second ignition hole 252; the inner ring fire cover 200 is projected vertically from the front, and the angle range between the first ignition hole 251 and the second ignition hole 252 and the horizontal axis is 10-45°. Exemplarily, the angle between the first ignition hole 251 and the second ignition hole 252 and the horizontal axis can be 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°, etc.; the inner ring fire cover 200 is projected along the side, and the angle range between the first ignition hole 251 and the second ignition hole 252 and the vertical axis is 10-50°. Exemplarily, the angle between the first ignition hole 251 and the second ignition hole 252 and the vertical axis can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45° or 50°, etc.

[0067] In this embodiment, when viewed from the front and downward, the distance between the first ignition hole 251 and the second ignition hole 252 gradually increases from the outside to the inside, forming an "outward eight" arrangement.

[0068] Reference Fig.10 On the basis of the above-mentioned embodiment, the air separator seat 100 includes an inner air separator ring 130, a middle air separator ring 140 and an outer air separator ring 150 which are concentric and arranged in sequence; the middle air separator ring 140 has a notch, the side edge of the notch protrudes radially outward and tightly abuts against the inner side wall of the outer air separator ring 150, and tightly cooperates with the bottom surface of the inner ring fire cover 200 at the notch to form a drainage groove 240; the inlet end of the fire protection hole 230 is located on the bottom surface of the inner ring fire cover 200 and is located in the drainage groove 240. Such an arrangement can not only divide the space in the air separator seat 100 into the inner ring fire mixing chamber 110 and the middle ring fire mixing chamber 120, but also enable the air mixture flowing through the inner ring fire mixing chamber 110 to flow into the first side fire protection hole 232, the second side fire protection hole 233 and the fire introduction hole in the shortest path.

[0069] Specifically, the inlet end of the fire transfer hole is also located on the bottom surface of the inner ring fire cover 200 and is located in the diversion groove 240 .

[0070] In this embodiment, refer to Figure 2 The inner ring fire outlet hole 210 includes a connecting hole 211 and an air outlet groove 212 which are connected in sequence along the gas flow direction. The connecting hole 211 is inclined relative to the center line of the inner ring fire cover 200, and the distance between the connecting hole 211 and the center line of the inner ring fire cover 200 gradually decreases from bottom to top; the air outlet groove 212 is inclined from high to low from inside to outside. With this arrangement, when using a pointed bottom pot, the burning direction of the flame can be kept consistent with the curvature of the bottom surface of the pot as much as possible, and the flame can burn along the bottom curved surface of the pot; at the same time, the flame of the inner ring fire can be ring-shaped, making the combustion more stable. When using a pointed bottom pot, the inner ring fire will not be back-pressed to the surface of the water receiving tray.

[0071] Embodiment 2

[0072] The second embodiment provides a gas cooker, which includes the burner cover in the first embodiment. The gas cooker provided in the present embodiment includes the burner cover, and thus, the technical advantages and effects achieved by the gas cooker also include the technical advantages and effects achieved by the burner, which will not be described in detail here.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A burner fire cover, characterized in that: include: An air distribution seat (100) and a fire cover detachably mounted on the air distribution seat (100), wherein the fire cover comprises an inner ring fire cover (200) and an outer ring fire cover arranged on the outer peripheral side of the inner ring fire cover (200); The gas distribution seat (100) comprises an inner ring fire gas mixing chamber (110) and a middle ring fire gas mixing chamber (120) which are separated from each other; The outer peripheral wall of the inner ring fire cover (200) is provided with an inner ring fire outlet hole (210), a middle ring fire outlet hole (220) and a fire protection hole (230); the inner ring fire outlet hole (210) and the fire protection hole (230) are both in communication with the inner ring fire gas mixing chamber (110); and the middle ring fire outlet hole (220) is in communication with the middle ring fire gas mixing chamber (120); The inner ring fire outlet hole (210), the middle ring fire outlet hole (220) and the fire protection hole (230) are arranged in sequence from top to bottom, and the three are arranged in sequence outward along the radial direction of the inner ring fire cover (200); An ignition hole is provided just above the fire protection hole (230) and on the circumference of the middle ring fire outlet hole (220), the ignition hole being connected to the middle ring fire mixing chamber (120), and two ignition holes are provided, and the two ignition holes are located between the two middle ring fire outlet holes (220).

2. The burner cap according to claim 1, characterized in that: The number of the fire protection holes (230) is three, and the three fire protection holes (230) are respectively a middle fire protection hole (231) arranged in the middle position, a first side fire protection hole (232) and a second side fire protection hole (233) arranged on both sides of the middle fire protection hole (231).

3. The burner fire cover according to claim 2, characterized in that: The inner ring fire cover (200) is projected vertically from the front, the angle between the middle fire protection hole (231) and the horizontal axis is 0°, and the angle between the first side fire protection hole (232) and the second side fire protection hole (233) and the horizontal axis is in the range of 5 to 45°; When the inner ring fire cover (200) is projected along the side, the angle between the middle fire protection hole (231) and the vertical axis is 90°, and the angle between the first side fire protection hole (232) and the second side fire protection hole (233) and the vertical axis ranges from 25° to 70°.

4. The burner cap according to claim 3, characterized in that: The inner ring fire cover (200) is provided with an air transfer hole, and the middle fire protection hole (231) is connected with the inner ring fire mixing chamber (110) through the air transfer hole; The first side fire protection hole (232) and the second side fire protection hole (233) are respectively directly connected to the inner ring fire mixing chamber (110).

5. The burner cap according to claim 1, characterized in that: The outlet ends of the ignition hole and the middle ring fire outlet hole (220) are both arranged on the outer conical surface of the inner ring fire cover (200); The outlet end of the fire protection hole (230) is arranged on the outer cylindrical surface of the inner ring fire cover (200).

6. The burner cap according to claim 1, characterized in that: The two ignition holes are respectively a first ignition hole (251) and a second ignition hole (252); When the inner ring fire cover (200) is projected vertically from the front, the angles between the first ignition hole (251) and the second ignition hole (252) and the horizontal axis are both in the range of 10 to 45 degrees; When the inner ring fire cover (200) is projected along the side, the angles between the first ignition hole (251) and the second ignition hole (252) and the vertical axis are both in the range of 10 to 50 degrees.

7. The burner fire cover according to any one of claims 1 to 6, characterized in that: The gas separation seat (100) comprises an inner gas separation ring (130), a middle gas separation ring (140) and an outer gas separation ring (150) which are concentrically and sequentially spaced apart. The middle air-isolating ring (140) has a notch, the side edge of the notch protrudes radially outwards to tightly abut against the inner side wall of the outer air-isolating ring (150), and the notch is tightly matched with the bottom surface of the inner ring fire cover (200) to form a drainage groove (240); The inlet end of the fire protection hole (230) is located on the bottom surface of the inner ring fire cover (200) and is located in the drainage groove (240).

8. The burner cap according to claim 1, characterized in that: The inner ring fire outlet hole (210) comprises a connecting hole (211) and a gas outlet groove (212) which are connected in sequence along the gas flow direction; the connecting hole (211) is arranged obliquely relative to the center line of the inner ring fire cover (200), and the distance between the connecting hole (211) and the center line of the inner ring fire cover (200) gradually decreases from bottom to top; The air outlet groove (212) is arranged to be inclined from high to low from inside to outside.

9. A gas cooker, characterized in that: include: A burner fire cover as claimed in any one of claims 1 to 8.

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