Combustion device and gas stove

Abstract

The application discloses a combustion device and a gas stove, and belongs to the technical field of kitchen heating equipment, to solve the technical problem of poor fire transmission effect of the current gas stove. The combustion device comprises a gas distribution disc and a fire cover, the fire cover is arranged on the gas distribution disc, the fire cover and the gas distribution disc surround to form an outer ring gas channel and a center gas channel, the fire cover is provided with a center fire hole, an outer ring fire hole and a fire transmission hole, the center fire hole is communicated with the center gas channel, the outer ring fire hole is communicated with the outer ring gas channel, and the fire transmission hole is located between the center fire hole and the outer ring fire hole. In the direction from the air inlet end to the air outlet end of the fire transmission hole, the inner diameter of the fire transmission hole increases, the inner diameter of the fire transmission hole increases in the direction from the air inlet end to the air outlet end of the fire transmission hole, so that the fire transmission hole has an outward expansion structure, and therefore the gas pressure passing through the fire transmission hole can be reduced, and the gas flow rate passing through the fire transmission hole can be reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of kitchen heating equipment, and particularly relates to a combustion device and a gas stove. BACKGROUND

[0002] The gas stove is a combustion device, which generates a flame by igniting mixed gas of gas and air to heat a to-be-heated object such as a pot placed on the gas stove. The fire cover of the gas stove has an inner ring fire hole and an outer ring fire hole, so that the gas stove can generate an outer ring flame and a center flame. In order to make the inner ring flame and the outer ring flame of the gas stove more stable, a fire transmission structure can be arranged.

[0003] In the related art, the fire transmission structure of the gas stove is a fire transmission hole arranged in the fire cover. However, the flow rate of the mixed gas discharged through the fire transmission hole is relatively fast, which makes the fire transmission hole prone to flame separation phenomenon, thereby resulting in poor fire transmission effect of the gas stove. SUMMARY

[0004] The application aims to at least solve the technical problem of poor fire transmission effect of the gas stove to some extent. To this end, the application provides a combustion device and a gas stove.

[0005] In a first aspect, the application provides a combustion device, comprising:

[0006] a gas distribution disc; and

[0007] a fire cover arranged on the gas distribution disc, wherein the fire cover and the gas distribution disc surround to form an outer ring gas channel and a center gas channel, the outer ring gas channel surrounds the center gas channel, the fire cover is provided with a center fire hole, an outer ring fire hole and a fire transmission hole, the center fire hole is in communication with the center gas channel, the outer ring fire hole is in communication with the outer ring gas channel, the fire transmission hole is located between the center fire hole and the outer ring fire hole, and the fire transmission hole is in communication with at least one of the outer ring gas channel and the center gas channel;

[0008] wherein the inner diameter of the fire transmission hole increases in the direction from the gas inlet end to the gas outlet end of the fire transmission hole.

[0009] In the combustion device, the fire hole on the fire cover is in communication with the outer ring gas channel and / or the central gas channel, so that the fuel gas can be discharged through the fire hole and ignited by the central flame or the outer ring flame generated by the combustion device, and the central flame and the outer ring flame can be efficiently generated by the combustion device. The inner diameter of the fire hole increases in the direction from the gas inlet end to the gas outlet end of the fire hole, so that the fire hole has an outward expansion structure, the pressure of the fuel gas passing through the fire hole can be reduced, the flow rate of the fuel gas passing through the fire hole can be reduced, the fire hole is relatively closer to the fire cover, and the fire hole is prevented from being away from the flame, so that the fuel gas at the central fire hole or the outer ring fire hole can be more easily ignited by the fire hole, and the central flame and the outer ring flame can be more efficiently generated by the combustion device.

[0010] In some embodiments, in the direction from the gas inlet end to the gas outlet end of the fire hole, the inner diameter of the fire hole gradually increases.

[0011] In some embodiments, the hole shape of the fire hole is a circular truncated cone structure.

[0012] In some embodiments, the combustion device further comprises an extension part, the extension part is arranged on the fire cover, and the fire hole extends to the extension part.

[0013] In some embodiments, the extension part is arranged on the side of the fire cover facing the gas distribution disc, and the extension hole is coaxial with the fire hole.

[0014] In some embodiments, the extension part is arranged on the side of the fire cover facing the gas distribution disc, and the extension hole is coaxial with the fire hole.

[0015] In some embodiments, the extension part is integrally formed with the fire cover.

[0016] In some embodiments, the fire cover comprises a central cover body and an outer ring cover body, the central cover body and the gas distribution disc surround to form the central gas channel, the outer ring cover body and the gas distribution disc surround to form the outer ring gas channel, the central fire hole is arranged on the central cover body, and the outer ring fire hole and the fire hole are arranged on the outer ring cover body.

[0017] In some embodiments, the outer ring fire hole is a strip hole, the outer ring fire hole has one end adjacent to the central fire hole and a second end away from the central fire hole, and the fire hole is located between the first ends adjacent to the outer ring fire hole.

[0018] In a second aspect, based on the above-mentioned combustion device, the embodiments of the present application further provide a gas stove comprising the above-mentioned combustion device. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings described in the following embodiments are some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings belong to the protection scope of the present application.

[0020] Figure 1 The structural schematic diagram of the combustion device disclosed in the embodiments of the present application is shown;

[0021] Figure 2 The structural schematic diagram of the outer ring air channel and the center air channel of the combustion device disclosed in the embodiments of the present application is shown;

[0022] Figure 3 The structural schematic diagram of the transfer hole and the extension hole of the combustion device disclosed in the embodiments of the present application is shown;

[0023] Figure 4 The structural schematic diagram of the outer ring cover of the combustion device disclosed in the embodiments of the present application is shown.

[0024] Reference signs:

[0025] 100- gas distribution disc, 110- bottom disc, 120- first ring part, 130- second ring part, 140- third ring part, 150- center air channel, 160- outer ring air channel,

[0026] 200- fire cover, 210- outer ring cover, 211- first plate body, 212- second plate body, 213- third plate body, 214- outer ring fire hole, 220- center cover, 221- center fire hole, 230- transfer hole,

[0027] 300- extension part, 310- extension hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0029] It should be noted that all directionality indications in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directionality indications also change accordingly.

[0030] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0032] The present application will be described below in conjunction with the drawings and specific embodiments:

[0033] Please refer to Figures 1-3 The embodiment of the present application discloses a combustion device, which comprises a gas distribution disc 100 and a fire cover 200. The combustion device can be applied to a gas stove, of course, the combustion device can also be applied to other devices for generating flame by burning gas, and the present application is not limited to this.

[0034] Among them, the gas distribution disc 100 is the basic component of the combustion device of the present application, and the gas distribution disc 100 can provide a mounting base for other at least part of the components of the combustion device of the present application, and the fire cover 200 can be covered on the gas distribution disc 100, and the fire cover 200 can be surrounded with the gas distribution disc 100 to form a central gas channel 150 and an outer ring gas channel 160, and the fire cover 200 is also provided with a central fire hole 221 and an outer ring fire hole 214, the central fire hole 221 is communicated with the central gas channel 150, and the outer ring fire hole 214 is communicated with the outer ring gas channel 160, and the outer ring gas channel 160 can surround the central gas channel 150, and the central gas channel 150 can be arranged at the center position in the outer ring gas channel 160. Specifically, the cavity structure with an open mouth can be arranged in the gas distribution disc 100, when the fire cover 200 is covered on the gas distribution disc 100, the fire cover 200 can cover the open mouth of the cavity structure in the gas distribution disc 100, so that the inner wall of the gas distribution disc 100 and the fire cover 200 constitute the inner wall of the central gas channel 150 and the outer ring gas channel 160.

[0035] The fuel gas can be input into the central gas channel 150 and the outer ring gas channel 160 of the combustion device through the injector, and the outer ring gas channel 160 of the combustion device can be arranged in a ring or circular structure, so that when the fuel gas is input into the outer ring gas channel 160, the fuel gas can be uniformly distributed along the circumference of the outer ring gas channel 160, and correspondingly, the outer ring fire holes 214 on the fire cap 200 can also be uniformly distributed along the circumference of the fire cap 200, and the fuel gas in the outer ring gas channel 160 can be ignited by the ignition mechanism of the combustion device after being discharged through the outer ring fire holes 214 to form an outer ring flame, and the flame can be uniformly distributed. The central gas channel 150 can be a circular cavity, and the central fire hole 221 of the fire cap 200 can also be arranged along the circumference of the fire cap 200, so that the fuel gas in the central gas channel 150 can be ignited by the ignition mechanism of the combustion device after being discharged through the central fire hole 221 to form a central flame, so that the combustion device of the present application can form an outer ring flame and a central flame, so that the flame generated by the combustion device is more uniformly distributed, so that the cookware and utensils heated by the combustion device are more evenly heated.

[0036] The fire cap 200 is also provided with a fire transfer hole 230, which is located between the outer ring fire hole 214 and the central fire hole 221 of the fire cap 200, and is in communication with at least one of the central gas channel 150 and the outer ring gas channel 160, so that the fuel gas in the outer ring gas channel 160 and / or the central gas channel 150 can be discharged through the fire transfer hole 230, so that the combustion device is distributed with fuel gas in the area outside the outer ring fire hole 214 and the central fire hole 221. When the ignition of the combustion device is turned on, the ignition mechanism can ignite the fuel gas at the outer ring fire hole 214 or the central fire hole 221 of the fire cap 200 to form an outer ring flame or a central flame, and the outer ring flame or the central flame can ignite the fuel gas at the fire transfer hole 230 to form a fire transfer flame, and the fire transfer flame can ignite the fuel gas at the central fire hole 221 or the outer ring fire hole 214, so that the combustion device can efficiently form a central flame and an outer ring flame.

[0037] Specifically, when the ignition mechanism first ignites the fuel gas at the central fire hole 221 of the fire cap 200, the central flame can ignite the fuel gas at the fire transfer hole 230 due to the shorter distance between the central fire hole 221 and the fire transfer hole 230 than the distance between the central fire hole 221 and the outer ring fire hole 214, so that the fire transfer hole 230 of the combustion portion can generate a fire transfer flame, and the fire transfer flame can ignite the fuel gas at the outer ring fire hole 214 to form an outer ring flame. The arrangement of the fire transfer hole 230 on the fire cap 200 can make the combustion device generate an outer ring flame and a central flame more efficiently after being turned on, so as to avoid the situation that the fuel gas at the central fire hole 221 or the outer ring fire hole 214 is delayed to burn or cannot be burned, so that the combustion device of the present application has better combustion heating effect.

[0038] The fire hole 230 on the fire cover 200 has an air inlet end and an air outlet end. The air inlet end of the fire hole 230 is the end of the fire hole 230 that communicates with the outer ring air channel 160 and / or the central air channel 150, and the air outlet end of the fire hole 230 is the end of the fire hole 230 located on the surface of the fire cover 200, through which the combustion gas can be discharged. In the direction from the air inlet end to the air outlet end of the fire hole 230, that is, the extension direction of the fire hole 230, the fire hole 230 has an increasing inner diameter structure, so that the fire hole 230 can have an outward expanding structure. Therefore, when the combustion gas passes through the fire hole 230, the pressure of the combustion gas can be reduced due to the outward expansion of the fire hole 230, so that the flow rate of the combustion gas passing through the fire hole 230 can be reduced, avoiding the situation that the combustion gas continues to flow after being discharged through the fire hole 230, resulting in that the distance between the combustion gas and the fire cover 200 is too large. In this way, the combustion gas discharged through the fire hole 230 can be in a region relatively close to the fire cover 200, and the ignition flame formed by the combustion gas is also relatively close to the fire cover 200, avoiding the situation that the ignition flame appears to be away from the flame, so that the ignition flame is more likely to ignite the combustion gas at the central fire hole 221 or the outer ring fire hole 214, so that the combustion device of the present application can more efficiently generate the central flame and the outer ring flame.

[0039] In the combustion device provided by the embodiments of the present application, the fire hole 230 provided on the fire cover 200 communicates with the outer ring air channel 160 and / or the central air channel 150, so that the combustion gas can be discharged through the fire hole 230 and ignited by the central flame or the outer ring flame generated by the combustion device, and the combustion device can efficiently generate the central flame and the outer ring flame. The inner diameter of the fire hole 230 increases in the direction from the air inlet end to the air outlet end of the fire hole 230, so that the fire hole 230 has an outward expanding structure, and thus the pressure of the combustion gas passing through the fire hole 230 can be reduced, so that the flow rate of the combustion gas passing through the fire hole 230 can be reduced, so that the ignition flame generated at the fire hole 230 is relatively closer to the fire cover 200, avoiding the situation that the ignition flame appears to be away from the flame, so that the ignition flame is more likely to ignite the combustion gas at the central fire hole 221 or the outer ring fire hole 214, so that the combustion device can more efficiently generate the central flame and the outer ring flame.

[0040] In some embodiments, reference is made to Figure 3, in order to make the deceleration effect better during the process of the gas passing through the transfer hole 230 of the fire cap 200, the transfer hole 230 of the fire cap 200 can be provided to gradually increase in the inner diameter in the direction from the gas inlet end to the gas outlet end of the transfer hole 230, so that the increase in the inner diameter of the transfer hole 230 of the fire cap 200 is more gradual, thereby making the process of reducing the flow rate of the gas passing through the transfer hole 230 more stable and stable, so that the gas flowing out of the transfer hole 230 is relatively stable, so that the transfer flame generated at the transfer hole 230 is relatively stable. In addition, since the inner diameter of the transfer hole 230 gradually increases, the inner diameter of the transfer hole 230 is always in an increasing state in the direction from the gas inlet end to the gas outlet end of the transfer hole 230, so that the gas can start to reduce the flow rate after entering the transfer hole 230, and as the gas continues to pass through the transfer hole 230, the flow rate of the gas continues to decrease, and finally the flow rate of the gas can be relatively fully reduced.

[0041] In addition, since the transfer hole 230 has an outwardly expanding structure, the inner wall of the transfer hole 230 can guide the flow of the gas during the process of the gas passing through the transfer hole 230, so that the gas can flow in the direction of diffusion, so that the range of the gas flow formed after the gas passing through the transfer hole 230 is larger, and part of the gas passing through the transfer hole 230 can be close to the outer ring flame hole 214 and the center flame hole 221, respectively, so that the gas passing through the transfer hole 230 is more easily ignited by the outer ring flame or the center ring flame

[0042] In some embodiments, referring to Figure 3 The opening shape of the transfer hole 230 of the fire cap 200 of the present application can specifically adopt a circular truncated cone structure, so that the inner wall of the transfer hole 230 is a continuous arc surface, which can make the transition of the inner wall of the transfer hole 230 more smooth. During the process of the gas passing through the transfer hole 230 of the fire cap 200, the gas can flow smoothly along the arc inner wall of the transfer hole 230 under the action of the wall effect, so that the gas flow formed after the gas passing through the transfer hole 230 is stable.

[0043] Of course, in other embodiments, the hole shape of the transfer hole 230 of the fire cap 200 can also be provided as a conical frustum structure, so that the inner diameter of the transfer hole 230 can also gradually increase. In addition, the transfer hole 230 of the fire cap 200 can also be provided to include a plurality of hole portions, the plurality of hole portions of the transfer hole 230 can be sequentially distributed in the direction from the gas inlet end to the gas outlet end of the transfer hole 230, and the increasing rates of the inner diameters of the plurality of hole portions of the transfer hole 230 are different. The increasing rate of the inner diameter of each hole portion can be specifically set according to the flow rate of the gas, so that the control effect of the transfer hole 230 of the fire cap 200 on the flow rate of the gas is better.

[0044] In some embodiments, referring to Figure 3 and Figure 4In order to further reduce the flow rate of the gas passing through the transfer hole 230 of the fire cap 200, the combustion device of the present application can further comprise an extension part 300, which can be arranged on the fire cap 200, and the part of the transfer hole 230 of the fire cap 200 is located in the extension part 300, so that part of the transfer hole 230 is arranged on the fire cap 200, and the other part of the transfer hole 230 can be arranged on the extension part 300, thereby increasing the length of the transfer hole 230, so that the path of the gas flowing through the transfer hole 230 is longer, so that the flow rate of the gas passing through the transfer hole 230 can be further reduced. Specifically, the extension part 300 can be a protruding structure, which can be connected to the part of the fire cap 200 for arranging the transfer hole 230, so that the length of the transfer hole 230 can be increased without increasing the overall thickness of the fire cap 200, thereby reducing the material and weight of the fire cap 200, thereby reducing the weight and manufacturing cost of the combustion device of the present application.

[0045] In some embodiments, it should be understood that when the extension part 300 is arranged on the fire cap 200, the extension part 300 is a protruding structure protruding from the surface of the fire cap 200, so in order to protect the extension part 300, the extension part 300 can be arranged on the bottom side of the fire cap 200, i.e. the side of the fire cap 200 facing the gas distributor 100, which is the inner wall of the outer ring gas channel 160 and the central gas channel 150, so the extension part 300 can be arranged in the outer ring gas channel 160, so that the extension part 300 can be hidden between the fire cap 200 and the gas distributor 100. This can prevent the extension part 300 from being damaged by external force, and can make the side surface of the fire cap 200 exposed to the outside more simple and beautiful. Of course, it should be noted that if the overall structure of the combustion device of the present application is relatively compact, resulting in a relatively small space of the outer ring gas channel 160, the extension part 300 can also be arranged on the side of the fire cap 200 away from the gas distributor 100, so that there is enough space for the extension part 300 to be arranged, so that the length of the transfer hole 230 can be relatively long according to the needs.

[0046] The number of transfer holes 230 can be arranged in multiple, and multiple transfer holes 230 can be distributed along the circumference of the fire cap 200, so that the transfer efficiency of the combustion device of the present application can be improved, so that the combustion device can generate central flame and outer ring flame more efficiently. Correspondingly, the number of extension parts 300 can also be arranged in multiple, and multiple extension parts 300 are also distributed along the circumference of the fire cap 200, so that when the extension part 300 is arranged on the side of the fire cap 200 away from the gas distributor 100, the circumferentially uniformly distributed extension part 300 can make the appearance of the combustion device of the present application more beautiful.

[0047] In some embodiments, referring to Figure 3 andFigure 4 The extension hole 310 can be connected with the part of the transfer hole 230 located in the extension part 300. The gas can enter into the extension hole 310 before entering into the transfer hole 230. The inner diameter of the extension hole 310 is consistent in the axial direction of the extension hole 310. Therefore, the gas flow can be restrained by the extension hole 310 after entering into the extension hole 310 of the extension part 300. The stable gas flow can be formed during the gas passing through the extension hole 310. The stable gas flow can be steadily reduced in the flow rate during the gas passing through the transfer hole 230. The flow rate of the gas flow discharged from the transfer hole 230 can be effectively reduced. The gas flow discharged from the transfer hole 230 can still be stable. Therefore, the part of the gas can be more easily ignited by the central flame or the outer ring flame.

[0048] Of course, it should be understood that when the extension part 300 is arranged on the side of the fire cap 200 away from the gas distributor 100, the gas in the outer ring gas channel 160 can be reduced in speed by the transfer hole 230 and then discharged by the extension hole 310. The stable gas flow can be restrained by the extension hole 310. Specifically, since the inner diameter of the transfer hole 230 gradually increases from the gas inlet end to the gas outlet end, and the inner diameter of the extension hole 310 is consistent in the axial direction of the extension hole 310, the inner diameter of the extension hole 310 is not less than the inner diameter of the gas outlet end of the transfer hole 230, that is, the inner diameter of the extension hole 310 is not less than the maximum inner diameter of the transfer hole 230. The transfer hole 230 has a "horn" like expanding structure. Therefore, the flow rate of the gas can be reduced and gradually dispersed during the gas passing through the transfer hole 230. The gradually dispersed gas flow can be restrained after entering into the extension hole 310 with the consistent inner diameter, so that the gas flow can be stable, and the extension hole 310 will not affect the range of the gas flow. In addition, the inner diameter of the extension hole 310 can be greater than the inner diameter of the transfer hole 230, so that the gas entering into the extension hole 310 from the transfer hole 230 can be further diffused to reduce the flow rate of the gas.

[0049] In some embodiments, reference is made to Figure 3 and Figure 4In order to make the gas pass through the transfer hole 230 and the extension hole 310 efficiently, the extension hole 310 can be provided as a straight hole structure, and the transfer hole 230 is coaxially arranged with the extension hole 310, so that the extension direction of the extension hole 310 is the same as the extension direction of the transfer hole 230. The gas can pass through the extension hole 310 and the transfer hole 230 without changing the flow direction, so that the gas can pass through the extension hole 310 and the transfer hole 230 more efficiently, and then the gas can diffuse more efficiently in the surrounding area outside the transfer hole 230. Thus, when the combustion device generates a central flame or an outer ring flame, the transfer flame can also be generated efficiently, and finally the combustion device of the present application can generate the central flame and the outer ring flame efficiently.

[0050] In some embodiments, the material of the fire cap 200 of the present application can be stainless steel. The stainless steel material has good high temperature resistance, mechanical pressure resistance and corrosion and rust resistance, so that the stainless steel fire cap 200 has better structural stability after long-term use. In addition, the stainless steel material also has the characteristics of easy processing, so that the fire cap 200 is more easily shaped. Therefore, the extension part 300 and the fire cap 200 can adopt an integrated structure. Specifically, when the fire cap 200 and the extension part 300 are prepared, the extension part 300 can be formed by flanging through sheet metal stamping process, and the extension hole 310 can be formed by punching.

[0051] In some embodiments, referring to Figure 1 and Figure 2 The fire cap 200 of the present application can specifically include an outer ring cover body 210 and a central cover body 220. The central cover body 220 and the outer ring cover body 210 can be arranged around the gas distribution disc 100. The outer ring cover body 210 and the gas distribution disc 100 form an outer ring gas channel 160, and the central cover body 220 and the gas distribution disc 100 form a central gas channel 150. Correspondingly, the outer ring fire hole 214 is arranged on the outer ring cover body 210, and the central fire hole 221 is arranged on the central cover body 220. Correspondingly, the outer ring cover body 210 can be arranged around the central cover body 220, and the central cover body 220 can be located at the center of the outer ring cover body 210.

[0052] Specifically, the gas distribution plate 100 can include a base plate 110, a first ring portion 120 and a second ring portion 130, wherein the base plate 110 is a basic component of the gas distribution plate 100, the base plate 110 can provide a mounting base for other at least partial components of the gas distribution plate 100, the first ring portion 120 and the second ring portion 130 are annular sheet structure components, the first ring portion 120 and the second ring portion 130 are both vertically arranged on the base plate 110, the second ring portion 130 surrounds the first ring portion 120, and there is a certain gap between the second ring portion 130 and the first ring portion 120, so that a cavity space with an opening can be formed between the second ring portion 130 and the first ring portion 120, so that when the outer ring cover 210 is arranged on the gas distribution plate 100, the outer ring cover 210 can block the cavity space between the first ring portion 120 and the second ring portion 130, so that the outer ring cover 210, the first ring portion 120, the second ring portion 130 and the base plate 110 form an outer ring air channel 160.

[0053] With reference to Figure 4 , the outer ring cover 210 can include a first plate body 211, a second plate body 212 and a third plate body 213 connected together, wherein the second plate body 212 and the third plate body 213 are arranged in a bent manner relative to the first plate body 211, and the third plate body 213 can be connected to the side of the first plate body 211 away from the second plate body 212, so that the second plate body 212 and the third plate body 213 can be arranged in a spaced manner, the second plate body 212 and the third plate body 213 are both annular plate members, and the cavity space between the second plate body 212 and the third plate body 213 can accommodate at least part of the gas distribution plate 100. Therefore, when the outer ring cover 210 is mounted with the gas distribution plate 100, the second plate body 212 and the third plate body 213 can sandwich the first ring portion 120 and the second ring portion 130 therebetween, specifically, the second plate body 212 and the third plate body 213 are arranged in abutment with the two sides of the first ring portion 120 and the second ring portion 130 respectively, so that at least part of the first ring portion 120 and at least part of the second ring portion 130 are located in the region between the second plate body 212 and the third plate body 213, and the second plate body 212 is the outer side wall of the outer ring cover 200.

[0054] In some embodiments, in order to tightly connect the outer ring cover 210 with the gas distribution disc 100, the second plate body 212 and the third plate body 213 can clamp the first ring part 120 and the second ring part 130 therebetween by means of interference fit, so that the second plate body 212 can tightly adhere to the outer side wall of the first ring part 120, and the third plate body 213 can tightly adhere to the outer side wall of the second ring part 130. Specifically, when the outer ring cover 210 and the gas distribution disc 100 are not assembled, the distance between the second plate body 212 and the third plate body 213 is smaller than the distance between the two opposite sides of the first ring part 120 and the second ring part 130. Therefore, after the first ring part 120 and the second ring part 130 are clamped between the second plate body 212 and the third plate body 213, the second plate body 212 and the third plate body 213 can be tightly connected with the first ring part 120 and the second ring part 130, so as to prevent the outer ring cover 210 and the gas distribution disc 100 from being separated.

[0055] Reference Figure 2 Figure 2 Specifically, the central cover 220 can be a circular structure, and the gas distribution disc 100 can further include a third ring part 140, which is surrounded by the first ring part 120. The central cover 220 can cover at least part of the third ring part 140, so that the central cover 220 can be fixed with the third ring part 140.

[0056] In some embodiments, the outer ring fire hole 214 on the outer ring cover 210 can be provided in the form of a strip-shaped hole structure, and a plurality of outer ring fire holes 214 can be arranged at intervals along the circumference of the outer ring cover 210. The outer ring fire hole 214 has a first end and a second end, wherein the first end of the outer ring fire hole 214 is adjacent to the central fire hole 221, and the second end of the outer ring fire hole 214 is away from the central fire hole 221. The transfer fire hole 230 can be arranged between adjacent outer ring fire holes 214, and specifically at the position of the first end of the outer ring fire hole 214, so that the transfer fire hole 230 can be relatively closer to the outer ring fire hole 214. If the gas discharged from the outer ring fire hole 214 is first ignited to form an outer ring flame, the outer ring flame can more easily ignite the gas at the transfer fire hole 230. If the gas discharged from the central fire hole 221 is first ignited to form a central flame, after the gas at the transfer fire hole 230 is ignited to form a transfer flame, the transfer flame can more easily ignite the gas at the outer ring fire hole 214 to form an outer ring flame.

[0057] Embodiment Two

[0058] Based on the above combustion device, the embodiments of the present application further provide a gas stove, which includes the above gas stove.

[0059] In the description of the specification, reference to "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terminology used in the specification is for the purpose of describing the particular versions of the application and is not intended to be limiting. The terminology can be standardized by the IEEE or other standards bodies.

Claims

1. A combustion device, characterized in that: include: Gas distribution plate (100); and The fire cover (200) is provided on the gas distribution plate (100), the fire cover (200) and the gas distribution plate (100) are arranged to form an outer ring air channel (160) and a central air channel (150), the outer ring air channel (160) is arranged in an annular or circular structure, the outer ring air channel (160) is arranged around the central air channel (150), and the fire cover (200) is provided with a central fire hole (221), an outer ring fire hole (214), and a central fire hole (221). ) and a fire transmission hole (230), the central fire hole (221) is in communication with the central air duct (150), the outer ring fire hole (214) is in communication with the outer ring air duct (160), the fire transmission hole (230) is located between the central fire hole (221) and the outer ring fire hole (214), and the fire transmission hole (230) is in communication with at least one of the outer ring air duct (160) and the central air duct (150); Wherein, in the direction from the air inlet end to the air outlet end of the fire transfer hole (230), the inner diameter of the fire transfer hole (230) increases.

2. The combustion device according to claim 1, characterized in that In the direction from the air inlet end to the air outlet end of the fire transfer hole (230), the inner diameter of the fire transfer hole (230) gradually increases.

3. The combustion device according to claim 2, characterized in that The fire transmission hole (230) has a truncated cone structure.

4. The combustion device according to claim 3, characterized in that The combustion device further comprises an extension portion (300), the extension portion (300) being arranged on the fire cover (200), and the fire transmission hole (230) extending to the extension portion (300).

5. The combustion device according to claim 4, characterized in that: An extension hole (310) is provided in the extension portion (300), and the extension hole (310) is communicated with the fire transmission hole (230). In the axial direction of the extension hole (310), the inner diameter of the extension hole (310) is consistent.

6. The combustion device according to claim 5, characterized in that The extension portion (300) is arranged on a side of the fire cover (200) facing the gas distribution plate (100), and the extension hole (310) is coaxial with the fire transmission hole (230).

7. The combustion device according to any one of claims 4 to 6, characterized in that: The extension portion (300) and the fire cover (200) are integrally formed.

8. The combustion device according to claim 7, characterized in that The fire cover (200) includes a central cover body (220) and an outer ring cover body (210), wherein the central cover body (220) and the gas distribution plate (100) are arranged to form the central air duct (150), and the outer ring cover body (210) and the gas distribution plate (100) are arranged to form the outer ring air duct (160), the central fire hole (221) is arranged on the central cover body (220), and the outer ring fire hole (214) and the fire transmission hole (230) are both arranged on the outer ring cover body (210).

9. The combustion device according to claim 8, characterized in that: The outer ring fire hole (214) is a strip hole, and the outer ring fire hole (214) has one end adjacent to the central fire hole (221) and a second end away from the central fire hole (221), and the fire transmission hole (230) is located between the first ends of adjacent outer ring fire holes (214).

10. A gas stove, characterized in that: The combustion device comprises the combustion device according to any one of claims 1 to 9.

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