Gas stove

Abstract

The present invention provides a gas stove, which relates to the technical field of gas stoves and includes an ignition needle and a burner cap. The burner cap includes a burner cap body and an outer brim connected to the upper end of the burner cap body. The outer brim extends laterally away from the center of the burner cap body. The burner cap body is provided with flame holes. The lower end surface of the outer brim is provided with a groove portion, which is recessed in a direction away from the flame holes, and at least part of the groove wall of the groove portion is on the gas injection path of the flame holes. Since at least part of the groove wall of the groove portion is on the gas injection path of the flame holes, after the gas is ejected from the flame holes, it collides at the groove portion and can form a swirling eddy current area, which is beneficial to the formation of a gas-air mixture mass. When the ignition needle ignites, the ignition success rate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, and more particularly to a gas stove. Background Art

[0002] At present, the burners of household gas stoves generally use high-voltage discharge of ignition needles to ignite gas. The ignition needles are generally arranged near the ignition holes of the gas stoves. During ignition, the discharge end of the ignition needle generates an instantaneous high electric potential to produce an electric spark, thereby igniting the gas ejected from the ignition holes and realizing the ignition of the gas stove.

[0003] When the gas stove is ignited, the gas instantaneously ejected from the flame holes has a very high pressure and a fast flow rate, which is likely to cause flame lift, resulting in problems such as ignition failure, low ignition success rate, and unsmooth flame transfer. At the same time, it is easy to cause deflagration, posing a safety hazard problem, and the user experience is extremely poor. Summary of the Invention

[0004] The purpose of the present invention is to provide a gas stove to alleviate the technical problems that the gas instantaneously ejected from the flame holes of the existing gas stoves has a very high pressure and a fast flow rate, which is likely to cause flame lift, resulting in ignition failure, low ignition success rate, and unsmooth flame transfer.

[0005] The gas stove provided by the present invention includes an ignition needle and a burner cap. The burner cap includes a burner cap body and an outer brim connected to the upper end of the burner cap body. The outer brim extends laterally away from the center of the burner cap body. The burner cap body is provided with flame holes. The lower end surface of the outer brim is provided with a groove portion, which is recessed away from the flame holes, and at least part of the groove wall of the groove portion is on the gas ejection path of the flame holes.

[0006] Further, the outer brim is annularly arranged along the outer circumference of the burner cap body, and the groove portion is a circumferential diversion ring groove provided on the lower end surface of the outer brim.

[0007] Further, the ignition needle includes an ignition needle body, and the discharge end of the ignition needle body faces the flame holes;

[0008] Along the direction towards the flame holes, the cross-sectional area of the discharge end gradually decreases.

[0009] Further, the ignition needle includes a housing. The ignition needle body includes a first electrode section and a second electrode section. The first electrode section is connected to the end of the second electrode section, and the first electrode section constitutes the discharge end;

[0010] The housing wraps around the circumference of the second electrode section.

[0011] Further, the extending direction of the second electrode section is perpendicular to the extending direction of the first electrode section.

[0012] Further, the width of the housing is greater than the size of the cross-section of the flame hole, and at least a part of the housing is located on the gas injection path of the flame hole.

[0013] Further, the width of the housing is greater than or equal to twice the diameter of the flame hole, and the housing is made of ceramic material.

[0014] Further, the side surface of the housing facing the flame hole is a concave surface, and the concave surface is recessed in a direction away from the flame hole.

[0015] Further, the concave surface is an arc surface.

[0016] Further, the housing is made of ceramic material.

[0017] Further, the flame hole includes a first fire outlet channel and a second fire outlet channel which are connected to each other and communicate in sequence, and the second fire outlet channel is close to the ignition needle;

[0018] The cross-sectional area of the second fire outlet channel is smaller than the cross-sectional area of the first fire outlet channel, and along the direction away from the first fire outlet channel, the cross-sectional area of the second fire outlet channel gradually increases.

[0019] The gas stove provided by the present invention includes an ignition needle and a burner cap. The burner cap includes a burner cap body and an outer brim connected to the upper end of the burner cap body. The outer brim extends laterally away from the center of the burner cap body. A flame hole is provided on the burner cap body. A groove portion is provided on the lower end surface of the outer brim. The groove portion is recessed in a direction away from the flame hole, and at least a part of the groove wall of the groove portion is on the gas injection path of the flame hole.

[0020] Because at least a part of the groove wall of the groove portion is located on the gas injection path of the flame hole, after the gas is ejected from the flame hole and collides at the groove portion, a swirling eddy current area can be formed, which is beneficial to the formation of a gas-air mixture mass. When the ignition needle ignites, the ignition success rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the gas stove provided by the embodiment of the present invention;

[0023] Figure 2 Structural diagram of the ignition needle of the gas stove provided by the embodiment of the present invention;

[0024] Figure 3 Top view of the gas stove provided by the embodiment of the present invention.

[0025] Icons: 100 - Ignition needle; 110 - Ignition needle body; 111 - First electrode section; 112 - Second electrode section; 120 - Housing; 121 - Arc surface; 200 - Burner cap; 201 - Gas mixing chamber; 210 - Burner cap body; 211 - Flame holes; 2111 - Second fire outlet channel; 2112 - First fire outlet channel; 220 - Outer brim; 221 - Groove part. Specific embodiments

[0026] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1 to 3 shown, the gas stove provided in this embodiment includes an ignition needle 100 and a burner cap 200. The burner cap 200 includes a burner cap body 210 and an outer brim 220 connected to the upper end of the burner cap body 210. The outer brim 220 extends laterally away from the center of the burner cap body 210. The burner cap body 210 is provided with flame holes 211. The lower end surface of the outer brim 220 is provided with a groove part 221. The groove part 221 is recessed in a direction away from the flame holes 211, and at least part of the groove wall of the groove part 221 is on the gas injection path of the flame holes 211.

[0028] Since at least part of the groove wall of the groove part 221 is on the gas injection path of the flame holes 211, after the gas is ejected from the flame holes 211, it collides at the groove part 221, and a swirling eddy current area can be formed, which is beneficial to the formation of the gas-air mixture mass. When the ignition needle 100 ignites, the ignition success rate is improved.

[0029] Specifically, the ignition needle 100 and the burner cap 200 are arranged at intervals. The burner cap 200 includes a burner cap body 210 and an outer brim 220. The outer brim 220 is arranged on the upper end surface of the burner cap body 210 and extends laterally away from the burner cap body 210. The lower end surface of the outer brim 220 is provided with a groove part 221. The groove part 221 is recessed in a direction away from the flame holes 211. The gas is ejected from the flame holes 211 and collides at the groove part 221, and a swirling eddy current area can be formed, which is beneficial to the formation of the gas-air mixture mass and further improves the ignition success rate.

[0030] In this embodiment, the outer brim 220 can also be annularly arranged along the outer periphery of the burner body 210. At this time, the groove portion 221 is a circumferential diversion ring groove provided on the lower end surface of the outer brim 220.

[0031] In addition, the outer brim 220 can also effectively prevent the overflow liquid of the cookware on the gas stove from flowing into the fire holes 211 and causing blockage.

[0032] Furthermore, the ignition needle 100 includes an ignition needle body 110, and the discharge end of the ignition needle body 110 faces the fire hole 211; along the direction towards the fire hole 211, the cross-sectional area of the discharge end gradually decreases.

[0033] In this embodiment, the discharge end of the ignition needle body 110 faces the fire hole 211, and along the direction towards the fire hole 211, the cross-sectional area of the discharge end gradually decreases. When the ignition needle discharges, the electric charges can be concentrated at the end of the ignition needle body 110, with the direction concentrated, the current concentrated, and the discharge more accurate. Its breakdown ability is stronger, improving the ignition success rate.

[0034] Furthermore, the ignition needle 100 includes a housing 120. The ignition needle body 110 includes a first electrode section 111 and a second electrode section 112. The first electrode section 111 is connected to the end of the second electrode section 112, and the first electrode section 111 constitutes the discharge end; the housing 120 is wrapped around the circumference of the second electrode section 112.

[0035] Specifically, the ignition needle 100 includes an ignition needle body 110 and a housing 120. The ignition needle body 110 includes a first electrode section 111 and a second electrode section 112. The housing is wrapped around the circumference of the second electrode section 112, and the second electrode section 112 can be arranged in the vertical direction. One end of the first electrode section 111 is connected to the upper end of the second electrode section 112, and the other end of the first electrode section 111 faces the fire hole 211, forming the discharge end.

[0036] In this embodiment, as Figure 3 shown, when observed along the direction perpendicular to this figure, the first electrode section 111 is fan-shaped, and the tip of the fan shape faces the fire hole 211. Setting the discharge end of the ignition needle 100 as fan-shaped is conducive to concentrating the electric charges at the tip of the ignition needle 100, with the discharge direction concentrated, the current concentrated, making it easier to discharge and generate sparks, with tip discharge and stronger breakdown ability.

[0037] It should be noted that the first electrode section 111 can be conical, the second electrode section 112 can be cylindrical, the larger-area end of the first electrode section 111 is connected to the upper end of the second electrode section 112, the first electrode section 111 constitutes the discharge end, and along the direction away from the second electrode section 112, the area of the first electrode section 111 gradually decreases.

[0038] In this embodiment, the material of the housing 120 is ceramic material.

[0039] Further, the extending direction of the second electrode segment 112 is perpendicular to that of the first electrode segment 111.

[0040] Specifically, the second electrode segment 112 extends in the vertical direction, the first electrode segment 111 extends in the horizontal direction, and the second electrode segment 112 is perpendicular to the first electrode segment 111.

[0041] As Figure 3 shown, H in the figure represents the width of the housing 120. The width of the housing 120 is greater than the size of the cross-section of the flame hole 211, and at least part of the housing 120 is located on the gas injection path of the flame hole 211. When the gas in the flame hole 211 sprays outwards, the housing 120 can block the sprayed gas. After the gas collides with the housing 120, a swirling eddy current region is formed, which helps to form a gas-air mixture mass, increases the ignition area, and further improves the ignition success rate.

[0042] In this embodiment, the flame hole 211 is a round hole, the ceramic housing 120 is arranged in the vertical direction, the center of the flame hole 211 is aligned with the center in the width direction of the housing 120, and the upper end surface of the housing 120 is higher than the lower edge of the flame hole 211.

[0043] Further, the width of the housing 120 is greater than or equal to twice the diameter of the flame hole 211, which can better block the flame hole 211, form a swirling eddy current region, and improve the ignition success rate.

[0044] Further, the side surface of the housing 120 facing the flame hole 211 can also be set as a concave surface, and the concave surface is recessed in the direction away from the flame hole 211. The advantage of this setting is that it can further swirl and gather the gas sprayed from the flame hole 211 to form a swirling eddy current region.

[0045] Preferably, the concave surface is an arc surface 121.

[0046] It should be noted that the side surface of the housing 120 facing the flame hole 211 can also be "U" - shaped or "V" - shaped.

[0047] Further, the flame hole 211 includes a first fire outlet channel 2112 and a second fire outlet channel 2111 which are connected to each other and communicate in sequence. The second fire outlet channel 2111 is close to the ignition needle 100; the cross-sectional area of the second fire outlet channel 2111 is smaller than that of the first fire outlet channel 2112, and along the direction away from the first fire outlet channel 2112, the cross-sectional area of the second fire outlet channel 2111 gradually increases.

[0048] Specifically, the flame holes 211 communicate the gas mixing cavity 201 with the outside. In the outward direction from the gas mixing cavity 201, the channels of the flame holes 211 on the burner cap body 210 are arranged to incline upward horizontally. The flame holes 211 include a first fire outlet channel 2112 and a second fire outlet channel 2111 that are connected to each other and communicate in sequence. Compared with the first fire outlet channel 2112, the second fire outlet channel 2111 is closer to the outside, that is, closer to the ignition needle 100.

[0049] In this embodiment, the cross-sections of both the first fire outlet channel 2112 and the second fire outlet channel 2111 are circular, and the diameter of the second fire outlet channel 2111 is larger than that of the first fire outlet channel 2112.

[0050] The diameter of the first fire outlet channel 2112 remains unchanged, and the second fire outlet channel 2111 is in a flared shape, and the diameter of the second fire outlet channel 2111 gradually increases along the flow direction of the gas.

[0051] Thus, the mixed gas enters from the first fire outlet channel 2112 and flows out from the second fire outlet channel 2111. Since the diameter of the second fire outlet channel 2111 is larger than that of the first fire outlet channel 2112, and the second fire outlet channel 2111 is in a flared shape, small-hole intake can prevent the occurrence of the adverse phenomenon of flashback, and large-hole outlet can reduce the flow rate of the mixed gas at the outlet of the flame hole, which is beneficial to the formation of the mixed gas mass, greatly guarantees the ignition success rate, and at the same time helps more secondary air to be supplemented to the root of the flame, making the combustion more complete, thereby enhancing the combustion effect.

[0052] The gas stove provided in this embodiment, the burner cap 200 includes a burner cap body 210 and an outer brim 220 provided at its upper end and extending laterally. And a groove portion 221 is provided on the lower end surface of the outer brim 220. When the gas flows out through the flame holes 211, it collides with the groove portion 221. The ignition area formed by the flame holes, the flame holes 211, the ignition needle 100, and the outer brim 220 constitutes a swirling eddy current area, effectively generating a mixed gas mass of gas and air, increasing the ignition area, further improving the ignition success rate, achieving successful rapid ignition and smooth flame transfer, avoiding the occurrence of the adverse phenomenon of flame lift-off, improving the effect of flame stability, effectively enhancing the user experience. At the same time, the discharge end of the ignition needle 100 faces the flame hole 211, and the discharge end is a fan-shaped tip, which can concentrate the charge at the end of the ignition needle 100, making the discharge current more concentrated and the breakdown stronger, which can improve the ignition success rate. At the same time, the width of the housing 120 of the ignition needle 100 is larger than the diameter of the flame hole 211, and at least can partially block the gas ejected from the flame hole 211, further forming a swirling eddy current area and increasing the ignition area.

[0053] Meanwhile, to prevent flashback, stabilize the flow rate, ensure the ignition success rate, and enhance the combustion effect, the flame hole 211 includes a first fire outlet channel 2112 and a second fire outlet channel 2111 that are connected in sequence, and the diameter of the second fire outlet channel 2111 is greater than that of the first fire outlet channel 2112, so as to achieve small-hole intake and large-hole exhaust. This can prevent the occurrence of the adverse phenomenon of flashback. The large-hole exhaust can reduce the flow rate of the mixed gas at the outlet of the flame hole 211, which is beneficial to the formation of the mixed gas mass, greatly ensures the ignition success rate, and at the same time helps more secondary air to be supplemented to the root of the flame, making the combustion more complete, thereby enhancing the combustion effect.

[0054] In summary, the gas stove provided by the present invention includes an ignition needle 100 and a burner cap 200. The burner cap 200 includes a burner cap body 210 and an outer brim 220 connected to the upper end of the burner cap body 210. The outer brim 220 extends laterally away from the center of the burner cap body 210. A flame hole 211 is provided on the burner cap body 210. A groove portion 221 is provided on the lower end surface of the outer brim 220. The groove portion 221 is recessed away from the flame hole 211, and at least part of the groove wall of the groove portion 221 is on the gas injection path of the flame hole 211. Since at least part of the groove wall of the groove portion 221 is on the gas injection path of the flame hole 211, after the gas is ejected from the flame hole 211, it collides at the groove portion 221, and a swirling eddy region can be formed, which is beneficial to the formation of the mixed gas mass of gas and air. When the ignition needle 100 ignites, the ignition success rate is improved.

[0055] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas stove, comprising an ignition needle (100) and a burner cap (200). The burner cap (200) includes a burner cap body (210) and an outer brim (220) connected to the upper end of the burner cap body (210). The outer brim (220) extends laterally away from the center of the burner cap body (210). The burner cap body (210) is provided with fire holes (211). Characterized in that, a groove portion (221) is provided on the lower end surface of the outer brim (220). The groove portion (221) is recessed away from the fire holes (211), and at least part of the groove wall of the groove portion (221) is on the gas injection path of the fire holes (211); the ignition needle (100) includes an ignition needle body (110). The discharge end of the ignition needle body (110) faces the fire holes (211); along the direction towards the fire holes (211), the cross-sectional area of the discharge end gradually decreases; the ignition needle (100) includes a housing (120). The ignition needle body (110) includes a first electrode section (111) and a second electrode section (112). The first electrode section (111) is connected to the end of the second electrode section (112). The first electrode section (111) constitutes the discharge end; the housing (120) is wrapped around the circumference of the second electrode section (112); the first electrode section (111) is fan-shaped, and the tip of the fan shape faces the fire holes (211); the width of the housing (120) is greater than the size of the cross-section of the fire holes (211), and at least part of the housing (120) is on the gas injection path of the fire holes (211); the side surface of the housing (120) facing the fire holes (211) is a concave surface, and the concave surface is recessed away from the fire holes (211); the concave surface is an arc surface (121).

2. The gas stove according to claim 1, Characterized in that, the outer brim (220) is annularly arranged along the outer circumference of the burner cap body (210), and the groove portion (221) is a circumferential diversion ring groove provided on the lower end surface of the outer brim (220).

3. The gas stove according to claim 1, Characterized in that, the extending direction of the second electrode section (112) is perpendicular to the extending direction of the first electrode section (111).

4. The gas stove according to claim 1, Characterized in that, the width of the housing (120) is greater than or equal to twice the diameter of the fire holes (211), and the material of the housing (120) is ceramic material.

5. The gas stove according to claim 1 or 2, Characterized in that, the fire holes (211) include a first fire outlet channel (2112) and a second fire outlet channel (2111) which are connected to each other and communicate in sequence. The second fire outlet channel (2111) is close to the ignition needle (100); The cross-sectional area of the second fire outlet channel (2111) is smaller than that of the first fire outlet channel (2112), and the cross-sectional area of the second fire outlet channel (2111) gradually increases in the direction away from the first fire outlet channel (2112).

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