A gas stove

Abstract

The application discloses a gas stove. A first inclined surface is formed on the bottom end surface of the outer ring sidewall of the outer fire cover and is inclined upward to the central axis of the outer fire cover. The first inclined surface is in contact with the gas distribution disc. When the stove is working, water, soup and other liquid falling to the outer side of the outer fire cover cannot enter the contact surface of the outer fire cover and the gas distribution disc and the inside of the gas distribution disc, preventing the contact surface of the outer fire cover and the gas distribution disc from rusting and sticking together. A second inclined surface is formed on the bottom end surface of the annular sidewall of the inner fire cover and is inclined upward to the central axis of the inner fire cover. The second inclined surface is in contact with the gas distribution disc. When the stove is working, water, soup and other liquid falling to the outer side of the inner fire cover cannot enter the contact surface of the inner fire cover and the gas distribution disc and the inside of the gas distribution disc, preventing the contact surface of the inner fire cover and the gas distribution disc from rusting and sticking together.

Description

Technical Field

[0001] This invention relates to the field of stove technology, and more particularly to a gas stove. Background Technology

[0002] The current gas stove is used in harsh environments. During cooking, water, oil, soup and other liquids in the pot can easily overflow or splash and enter the connection between the outer burner cap and the gas distribution plate, as well as the connection between the inner burner cap and the gas distribution plate. This can cause problems such as sticking and rusting at the contact points between the outer burner cap and the gas distribution plate, making it impossible to remove the outer burner cap and the inner burner cap, or even causing gas leaks. Summary of the Invention

[0003] This invention provides a gas stove that solves the problem of easy adhesion between the outer burner cap, inner burner cap, and gas distribution plate.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] A gas stove, comprising:

[0006] The outer flame cap includes an outer ring sidewall, an inner ring sidewall, and an annular top wall; the outer ring sidewall, inner ring sidewall, and annular top wall form an outer ring cavity; the bottom end face of the outer ring sidewall forms a first inclined surface, which is inclined upward towards the central axis of the outer flame cap.

[0007] The inner flame cover includes an annular sidewall and a top cover; the annular sidewall and the top cover form a central cavity; the bottom end face of the annular sidewall forms a second inclined surface, which is inclined upward towards the central axis of the inner flame cover;

[0008] The air distribution plate includes a central channel and an outer ring channel surrounding the central channel; the top surface of the outer ring sidewall of the outer ring channel has a first waterproof slope adapted to the first inclined surface; the first waterproof slope is in contact with the first inclined surface; the outer ring channel is in communication with the outer ring cavity; the top surface of the central ring wall of the central channel has a second waterproof slope adapted to the second inclined surface; the second waterproof slope is in contact with the second inclined surface; the central channel is in communication with the central cavity.

[0009] Furthermore, a secondary air channel is provided around the central channel. One end of the secondary air channel is connected to the outside, and the other end of the secondary air channel is connected to the space between the inner ring sidewall of the outer ring channel and the central ring wall of the central channel.

[0010] Furthermore, the base of the gas distribution plate is arranged at an angle from the central ring wall towards the edge of the base.

[0011] Furthermore, the tilt angle of the chassis is 1° to 5°.

[0012] Furthermore, several air intake grilles are provided on the outer ring air intake formed at the position corresponding to the outer ring channel on the chassis.

[0013] Furthermore, the first inclined surface bends downward and extends on the side closest to the central axis of the outer fire cover to form a first vertical surface.

[0014] Furthermore, the second inclined surface bends downward and extends on the side closest to the central axis of the inner fire cover to form a second vertical surface.

[0015] Furthermore, the base of the gas distribution plate is provided with a thermocouple through hole adapted to the thermocouple, the thermocouple is inserted into the thermocouple through hole, and a thermocouple waterproof sleeve is installed between the thermocouple and the thermocouple through hole; the base of the gas distribution plate is provided with an ignition needle through hole adapted to the ignition needle, the ignition needle is inserted into the ignition needle through hole, and an ignition needle waterproof sleeve is installed between the ignition needle and the ignition needle through hole.

[0016] Furthermore, the base of the gas distributor has a thermocouple through-hole, the diameter of which gradually increases from top to bottom; the outer circumferential surface of the thermocouple has an inclined surface adapted to the thermocouple through-hole; the thermocouple is inserted into the thermocouple through-hole, and the inclined surface of the thermocouple is in close contact with the thermocouple through-hole; the base of the gas distributor has an ignition needle through-hole, the diameter of which gradually increases from top to bottom; the outer circumferential surface of the ignition needle has an inclined surface adapted to the ignition needle through-hole; the ignition needle is inserted into the ignition needle through-hole, and the inclined surface of the ignition needle is in close contact with the ignition needle through-hole.

[0017] Furthermore, the burner head of the gas stove includes a central lower channel and an outer ring lower cavity surrounding the central lower channel. The central lower channel is connected to the central channel, and the outer ring lower cavity is connected to the outer ring channel. An ignition needle fixing hole is formed on the burner head, and the ignition needle passes through the ignition needle fixing hole of the burner head and the ignition needle through hole on the gas distribution plate base in sequence. A clearance area is formed near the ignition needle fixing hole of the burner head.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are as follows: In the gas stove of the present invention, the bottom surface of the outer ring sidewall of the outer burner cap has a first inclined surface that slopes upwards towards the central axis of the outer burner cap. This first inclined surface contacts and cooperates with the gas distribution plate. When the stove is working, liquids such as water and soup spilled onto the outside of the outer burner cap cannot enter the contact surface between the outer burner cap and the gas distribution plate, nor can they enter the interior of the gas distribution plate, thus preventing dirt accumulation, rusting, and adhesion between the contact surface of the outer burner cap and the gas distribution plate. Similarly, the bottom surface of the annular sidewall of the inner burner cap has a second inclined surface that slopes upwards towards the central axis of the inner burner cap. This second inclined surface contacts and cooperates with the gas distribution plate. When the stove is working, water and soup spilled onto the outside of the inner burner cap cannot enter the contact surface between the inner burner cap and the gas distribution plate, nor can they enter the interior of the gas distribution plate, thus preventing dirt accumulation, rusting, and adhesion between the contact surface of the inner burner cap and the gas distribution plate.

[0019] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment of the gas stove proposed in this invention;

[0022] Figure 2 yes Figure 1 Exploded view;

[0023] Figure 3 yes Figure 1 Top view of the fire caps (both Chinese and foreign);

[0024] Figure 4 yes Figure 1 Cross-sectional view of one embodiment of the Chinese and foreign fire caps;

[0025] Figure 5 yes Figure 4 A schematic diagram showing the connection between the outer flame cap and the gas distribution plate;

[0026] Figure 6 yes Figure 5 Enlarged view of A in the middle;

[0027] Figure 7 yes Figure 1 Cross-sectional view of another embodiment of the fire cap;

[0028] Figure 8 yes Figure 7A schematic diagram showing the connection between the outer flame cap and the gas distribution plate;

[0029] Figure 9 yes Figure 8 Enlarged view of B in the middle;

[0030] Figure 10 yes Figure 8 Enlarged view of C;

[0031] Figure 11 yes Figure 1 Schematic diagram of the structure of the inner flame cap;

[0032] Figure 12 This is a schematic diagram of another embodiment of the inner flame cover;

[0033] Figure 13 yes Figure 1 A schematic diagram of the structure of the center-distribution air plate;

[0034] Figure 14 yes Figure 1 Schematic diagram of the structure of the central furnace head;

[0035] Figure 15 yes Figure 14 Another structural diagram from a different angle;

[0036] Figure 16 yes Figure 1 Assembly diagram of the central gas distribution plate and the burner head;

[0037] Figure 17 yes Figure 1 Assembly diagram of the thermocouple, gas distribution plate, and furnace head;

[0038] Figure 18 yes Figure 1 Assembly diagram of the ignition needle, gas distribution plate, and burner head;

[0039] Figure 19 yes Figure 1 A schematic diagram of another embodiment of a thermocouple;

[0040] Figure 20 yes Figure 19 A schematic diagram of the assembly of the thermocouple and the gas distribution plate;

[0041] Figure 21 yes Figure 1 A schematic diagram of another embodiment of the ignition needle;

[0042] Figure 22 yes Figure 21 A schematic diagram of the assembly of the ignition needle and the gas distribution plate.

[0043] Figure label:

[0044] 1. Outer flame cap; 1-1. Outer flame port; 1-2. Annular flame stabilizing groove; 1-3. Flame transfer groove; 1-3-1. Reinforcing component; 1-4. Flame stabilizing hole; 1-5. First inclined surface; 1-6. First vertical surface; 1-7. Reinforcing rib; 1-8. Outer annular cavity; 1-9. Outer annular sidewall; 1-10. Inner annular sidewall; 1-11. Annular top wall;

[0045] 2. Inner flame cover; 2-1. Inner flame outlet; 2-2. Upper flame stabilizer groove; 2-3. Lower flame stabilizer groove; 2-4. Second vertical surface; 2-5. Top cover; 2-6. Drainage groove; 2-7. Second inclined surface; 2-8. Central cavity; 2-9. Annular sidewall;

[0046] 3. Air distribution plate; 3-1. Secondary air passage; 3-2. Outer ring passage; 3-3. Central passage; 3-4. Air distribution grille; 3-5. First waterproof slope; 3-6. Second waterproof slope; 3-8. Fixing hole on air distribution plate; 3-9. Thermocouple through hole; 3-10. Ignition needle through hole; 3-11. Chassis; 3-12. Outer ring sidewall; 3-13. Inner ring sidewall; 3-14. Central ring wall;

[0047] 4. Burner head; 4-1 Lower outer ring cavity; 4-2. Central lower channel; 4-3. Outer ring inlet pipe; 4-4. Inner ring inlet pipe; 4-5. Lower fixing hole of gas distribution plate; 4-6. Fixing hole of liquid tray; 4-7. Thermocouple fixing hole; 4-8. Ignition needle fixing hole; 4-9. Protrusion; 4-10. Clearance area; 4-11. Auxiliary hole;

[0048] 5. Ejector; 5-1. Outer annular contraction tube; 5-2. Inner annular contraction tube; 5-3. Air inlet; 5-4. Air inlet;

[0049] 6. Thermocouple; 6-1. Thermocouple waterproof sleeve; 6-2. Thermocouple bevel;

[0050] 7. Ignition needle; 7-1. Ignition needle waterproof sleeve; 7-2. Ignition needle bevel;

[0051] 8. Air damper. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0053] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] This embodiment proposes a gas stove, mainly including an outer burner cap 1, an inner burner cap 2, a gas distribution plate 3, a burner head 4, an injector 5, an air damper 8, a thermocouple 6, an ignition needle 7, etc. (See also...) Figure 1 , Figure 2 As shown.

[0056] The ejector 5 mainly includes an outer ring contraction tube 5-1 and an inner ring contraction tube 5-2. The outer ring contraction tube 5-1 has an air inlet 5-3, and the inner ring contraction tube 5-2 has an air inlet 5-4. The air inlets 5-3 and 5-4 are respectively connected to the damper 8. See [reference needed] Figure 2 As shown. After the gas passes through the damper 8, a portion of the primary air is drawn in through the inlet 5-3 and the inlet 5-4 into the outer ring contraction pipe 5-1 and the inner ring contraction pipe 5-2, respectively.

[0057] The burner head 4 mainly includes a central lower channel 4-2 and an outer ring lower cavity 4-1 surrounding the central lower channel 4-2. See [link / reference] Figure 14As shown; the outer ring lower cavity 4-1 has an outer ring inlet pipe 4-3, which is connected to the outer ring contraction pipe 5-1 of the ejector 5 (connected by riveting or high-temperature adhesive to prevent gas leakage); the central lower channel 4-2 has an inner ring inlet pipe 4-4, which is connected to the inner ring contraction pipe 5-2 of the ejector 5 (connected by riveting or high-temperature adhesive to prevent gas leakage). A liquid collection tray fixing hole 4-6 is also provided on the burner head 4 for fixing the liquid collection tray. Multiple gas distribution plate lower fixing holes 4-5 are also provided on the burner head 4, corresponding one-to-one with the multiple gas distribution plate upper fixing holes 3-8 on the gas distribution plate 3; the gas distribution plate 3 is placed on the burner head 4, with the multiple gas distribution plate lower fixing holes 4-5 aligned with the multiple gas distribution plate upper fixing holes 3-8, and then the gas distribution plate 3 is fixed to the burner head 4 with screws to ensure no gas leakage. There are four fixing holes 4-5 on the gas distribution plate of the burner head 4, which are evenly distributed around the circumference of the burner head 4. There are four fixing holes 3-8 on the gas distribution plate of the gas distribution plate 3, which are evenly distributed around the circumference of the gas distribution plate 3.

[0058] The gas distribution plate 3 includes a central channel 3-3 and an outer ring channel 3-2 surrounding the central channel 3-3; the central channel 3-3 is surrounded by a central ring wall 3-14; the outer ring channel 3-2 is surrounded by an outer ring side wall 3-12 and an inner ring side wall 3-13. After the gas distribution plate 3 is installed on the burner head 4, the lower central channel 4-2 is connected to the central channel 3-3, and the lower outer ring cavity 4-1 is connected to the outer ring channel 3-2.

[0059] A secondary air passage 3-1 is provided around the central passage 3-3 of the gas distribution plate 3. One end of the secondary air passage 3-1 is connected to the outside, and the other end of the secondary air passage 3-1 is connected to the space between the inner ring sidewall 3-13 of the outer ring passage 3-2 and the central ring wall 3-14 of the central passage 3-3. The secondary air passage 3-1 provides the secondary air required for the combustion of the gas discharged from the inner burner cap 2. See [reference needed]. Figure 13 , Figure 14 As shown.

[0060] The outer ring sidewall 3-12, inner ring sidewall 3-13, and central ring wall 3-14 are all fixed to the base 3-11 of the gas distribution plate 3. A central air inlet is formed on the base 3-11 at a position corresponding to the central channel 3-3, and the central lower channel 4-2 is connected to the central channel 3-3 through the central air inlet. An outer ring air inlet is formed on the base 3-11 at a position corresponding to the outer ring channel 3-2, and the outer ring lower cavity 4-1 is connected to the outer ring channel 3-2 through the outer ring air inlet. The base 3-11 of the gas distribution plate 3 is inclined from the central ring wall 3-14 towards the edge of the base, forming a drainage slope to facilitate the drainage of dripping soup. With the sloping design of the base 3-11, liquids spilled directly onto the base 3-11 from the cookware, as well as liquids guided onto the base 3-11 by the outer burner cap 1 and the inner burner cap 2, flow towards the perimeter of the base 3-11 and are smoothly guided to the secondary air channel 3-1, and then flow onto the liquid collection tray. This prevents the soup from remaining on high-temperature components such as the outer burner cap 1, the inner burner cap 2, the gas distribution plate 3, and the burner head 4, thus preventing the formation of dirt.

[0061] In this embodiment, the tilt angle of the chassis 3-11 is 1° to 5°. The above angle range is selected to avoid the angle being too small to provide adequate drainage for the liquid, and also to avoid the angle being too large to affect the cross-sectional area of ​​the secondary air channel 3-1, thereby affecting the stability of the flame combustion of the inner flame cover 2.

[0062] Several air distribution grilles 3-4 are provided on the outer ring air inlet to improve the uniformity of the mixed gas entering the outer ring channel 3-2 from the lower outer ring cavity 4-1.

[0063] The outer flame cap 1 in this embodiment mainly includes an outer ring sidewall 1-9, an inner ring sidewall 1-10, and an annular top wall 1-11; the outer ring sidewall 1-9, the inner ring sidewall 1-10, and the annular top wall 1-11 form an outer ring cavity 1-8; a plurality of outlet flame holes 1-1 are formed circumferentially on the outer ring sidewall 1-9, and the outlet flame holes 1-1 communicate with the outer ring cavity 1-8; the mixed gas in the outer ring cavity 1-8 is transferred to the outlet flame holes 1-1; a first inclined surface 1-5 is formed on the bottom end face of the outer ring sidewall 1-9 at the position in contact with the gas distribution plate 3, and the first inclined surface 1-5 is inclined upward in the direction of the central axis of the outer flame cap, that is, the first inclined surface 1-5 is inclined upward from the outside to the inside, see [reference]. Figures 2 to 6 As shown.

[0064] The top surface of the outer ring sidewall 3-12 of the outer ring channel 3-2 of the gas distributor 3 has a first waterproof slope 3-5, which is adapted to the first inclined surface 1-5 of the outer flame cap 1. The first inclined surface 1-5 and the first waterproof slope 3-5 are in contact and fit together to form an outwardly inclined mating surface structure. After the two are fitted together, the outer ring channel 3-2 is connected to the outer ring cavity 1-8 of the outer flame cap 1.

[0065] Because the bottom end face of the outer ring sidewall 1-9 of the outer burner cap 1 has a first inclined surface 1-5 that slopes upward toward the central axis of the outer burner cap, and the first inclined surface 1-5 contacts and cooperates with the gas distribution plate 3, water, soup, and other liquids spilled on the outside of the outer burner cap when the stove is working cannot enter the contact surface between the outer burner cap 1 and the gas distribution plate 3 or the interior of the gas distribution plate 3, thus preventing dirt from accumulating, rusting, and sticking together on the contact surface between the outer burner cap 1 and the gas distribution plate 3. Therefore, in this embodiment, the outer burner cap 1, through the inclined design of the bottom end face of the outer ring sidewall 1-9, prevents liquid from entering the contact surface between the outer burner cap 1 and the gas distribution plate 3 or the interior of the gas distribution plate, while ensuring a reliable seal and preventing air leakage. The outer burner cap 1 is also easy to remove from the gas distribution plate 3. Moreover, the design and processing of the first inclined surface 1-5 is simple and does not increase costs; only the angle of the cutting tool needs to be adjusted, making it highly machinable.

[0066] As another preferred design in this embodiment, to further improve the sealing performance of the contact surface between the outer flame cap 1 and the gas distribution plate 3 and prevent liquid from entering the gas distribution plate 3, the first inclined surface 1-5 is bent downward and extended on the side near the central axis of the outer flame cap to form a first vertical surface 1-6. The first vertical surface 1-6 abuts against the inner circumferential surface of the outer ring sidewall 3-12, further preventing liquid from entering the gas distribution plate 3 and further ensuring the reliable sealing between the outer flame cap 1 and the gas distribution plate 3. Moreover, the design of the first vertical surface 1-6 can position the outer flame cap 1, facilitating the positioning and assembly of the outer flame cap 1 and the gas distribution plate 3. See [reference needed]. Figures 7 to 9 As shown.

[0067] In this embodiment, the inclination angle of the first inclined surface 1-5 of the outer flame cap 1 is 10° to 30°, and correspondingly, the inclination angle of the first waterproof inclined surface 3-5 is also 10° to 30°. By selecting the above angle range, it is possible to avoid the angle being too large, which would affect the assembly stability of the outer flame cap 1 and the gas distribution plate 3, and to avoid the angle being too small, which would result in poor waterproofing.

[0068] The inner flame cap 2 in this embodiment mainly includes an annular sidewall 2-9 and a top cap 2-5, etc.; the annular sidewall 2-9 and the top cap 2-5 form a central cavity 2-8; a plurality of inner flame outlet holes 2-1 are formed circumferentially on the annular sidewall 2-9, and the inner flame outlet holes 2-1 communicate with the central cavity 2-8; the mixed gas in the central cavity 2-8 is transferred to the inner flame outlet holes 2-1; a second inclined surface 2-7 is formed on the bottom end face of the annular sidewall 2-9 at the position in contact with the gas distribution plate 3, and the second inclined surface 2-7 is inclined upward in the direction of the central axis of the inner flame cap, that is, the second inclined surface 2-7 is inclined upward from the outside to the inside, see Figure 11 As shown.

[0069] The top surface of the central annular wall 3-14 of the central channel 3-3 of the gas distribution plate 3 has a second waterproof slope 3-6, which is adapted to the second inclined surface 2-7 of the inner flame cap 2. The second inclined surface 2-7 and the second waterproof slope 3-6 are in contact and fit together to form an outwardly inclined mating surface structure. After the two are fitted together, the central channel 3-3 is connected to the central cavity 2-8 of the inner flame cap 2.

[0070] Because the bottom end face of the annular sidewall 2-9 of the inner burner cap 2 has a second inclined surface 2-7 that slopes upwards towards the central axis of the inner burner cap, and the second inclined surface 2-7 contacts and cooperates with the gas distribution plate 3, water, soup, etc., spilled on the outside of the inner burner cap when the stove is working cannot enter the contact surface between the inner burner cap 2 and the gas distribution plate 3 or the interior of the gas distribution plate 3, preventing dirt from accumulating, rusting, and sticking together on the contact surface between the inner burner cap 2 and the gas distribution plate 3. Therefore, in this embodiment, the inner burner cap 2, through the inclined design of the bottom end face of the annular sidewall 2-9, prevents liquid from entering the contact surface between the inner burner cap 2 and the gas distribution plate 3 and the interior of the gas distribution plate, while ensuring a reliable seal and preventing air leakage. The inner burner cap 2 is also easy to remove from the gas distribution plate 3. Moreover, the design and processing of the second inclined surface 2-7 is simple and does not increase costs; only the angle of the cutting tool needs to be adjusted, making it highly machinable.

[0071] As another preferred design in this embodiment, to further improve the sealing performance of the contact surface between the inner flame cap 2 and the gas distribution plate 3 and prevent liquid from entering the gas distribution plate 3, the second inclined surface 2-7 bends downward and extends on the side near the central axis of the inner flame cap to form a second vertical surface 2-4. The second vertical surface 2-4 abuts against the inner circumferential surface of the annular sidewall 2-9, further preventing liquid from entering the gas distribution plate 3 and further ensuring the reliable sealing between the inner flame cap 2 and the gas distribution plate 3. Moreover, the design of the second vertical surface 2-4 can position the inner flame cap 2, facilitating the positioning and assembly of the inner flame cap 2 and the gas distribution plate 3. See [reference needed]. Figures 10 to 12 .

[0072] In this embodiment, the inclination angle of the second inclined surface 2-7 of the inner flame cap 2 is 10° to 30°, and correspondingly, the inclination angle of the second waterproof inclined surface 3-6 is also 10° to 30°. By selecting the above angle range, it is possible to avoid the angle being too large, which would affect the assembly stability of the inner flame cap 2 and the gas distribution plate 3, and to avoid the angle being too small, which would result in poor waterproofing.

[0073] In this embodiment, the annular top wall 1-11 of the outer flame cap 1 is inclined downwards towards the central axis of the outer flame cap, so that the liquid dripping onto the annular top wall 1-11 is guided downwards to the base 3-11 of the gas distribution plate 3. Several reinforcing ribs 1-7 are formed on the annular top wall 1-11 to improve the overall strength of the outer flame cap 1.

[0074] To further improve the overall strength of the outer flame cover 1, several reinforcing ribs 1-7 are evenly distributed around the central axis of the outer flame cover.

[0075] A flame transfer groove 1-3 is formed on the annular top wall 1-11. The function of the flame transfer groove 1-3 is to transfer the combustion of the flame from the inner flame cap 2 to the outer flame hole 1-1, thereby igniting the gas discharged from the outer flame hole 1-1. A reinforcing member 1-3-1 is provided above the flame transfer groove 1-3 to reinforce the flame transfer groove 1-3 and improve its strength. One leg of the reinforcing member 1-3-1 is fixed to one side of the flame transfer groove 1-3, and the other leg of the reinforcing member 1-3-1 is fixed to the other side of the flame transfer groove 1-3.

[0076] An annular flame stabilizing groove 1-2 is formed circumferentially above or below the outlet flame hole 1-1 on the outer annular sidewall 1-9. Several flame stabilizing holes 1-4 are provided on the outer annular sidewall 1-9. The annular flame stabilizing groove 1-2 communicates with the outer annular cavity 1-8 through the flame stabilizing holes 1-4. The mixed gas in the outer annular cavity 1-8 is transferred to the annular flame stabilizing groove 1-2 through the flame stabilizing holes 1-4. The combustion of the mixed gas in the annular flame stabilizing groove 1-2 ensures the stability of the combustion of the gas in the outlet flame hole 1-1, prevents flame lift-off, and reduces the CO and NOx content of the combustion gas in the outlet flame hole 1-1.

[0077] In this embodiment, the flame stabilizing hole 1-4 and the outgoing flame hole 1-1 are arranged alternately, so that the flame stabilizing hole 1-4 can better provide flame stabilization for the outgoing flame hole 1-1.

[0078] In this embodiment, the bottom of the annular flame stabilizing groove 1-2 is connected to the outlet flame port 1-1, allowing for more flexible flow of the mixed gas within the outer annular cavity 1-8. The mixed gas in the outer annular cavity 1-8 is transferred to the annular flame stabilizing groove 1-2 via the flame stabilizing port 1-4. Part of the mixed gas in the annular flame stabilizing groove 1-2 is directly combusted, while the other part can be transferred to the outlet flame port 1-1, ensuring a sufficient supply of mixed gas for the outlet flame port 1-1. The flame stabilizing port 1-4 and the outlet flame port 1-1 are arranged alternately to provide flame stabilization for the entire outer flame cap 1.

[0079] In this embodiment, the top cover 2-5 of the inner fire cover 2 has an upward-facing groove, and a drainage groove 2-6 is provided on the side wall of the groove. The function of the groove structure of the top cover 2-5 is to allow the soup spilled from the pot to be stored in this position and then flow through the drainage groove 2-6 to the bottom plate 3-11 of the steam distribution plate 3. The bottom plate 3-11 has a drainage slope to facilitate the drainage of dripping soup.

[0080] As another preferred design in this embodiment, to facilitate liquid drainage, the top cover 2-5 has an arc-shaped structure with the center convex upwards, see [reference]. Figure 12 As shown, the liquid spilled on the top cover 2-5 flows directly down the top cover 2-5 to the base 3-11 of the gas distribution plate 3.

[0081] Above the inner flame outlet 2-1 on the annular sidewall 2-9, several spaced upper flame stabilizing grooves 2-2 are formed circumferentially. The upper flame stabilizing grooves 2-2 are directly connected to the central cavity 2-8. The combustion of the mixed gas discharged from the upper flame stabilizing grooves 2-2 is used to ensure the stability of the combustion of the gas in the inner flame outlet 2-1, prevent flame lift-off, and reduce the CO and NOx content of the combustion gas in the inner annular flame outlet 2-1.

[0082] Several internal flame outlets 2-1 are evenly arranged circumferentially, and several upper flame stabilizing grooves 2-2 are evenly arranged at equal intervals on the same circumference, so as to better provide flame stabilization function for all internal flame outlets 2-1.

[0083] Below the inner flame outlet 2-1 on the annular sidewall 2-9, several spaced lower flame stabilizing grooves 2-3 are formed circumferentially. The lower flame stabilizing grooves 2-3 are directly connected to the central cavity 2-8. The combustion of the mixed gas discharged from the lower flame stabilizing grooves 2-3 is used to ensure the stability of the combustion of the gas in the inner flame outlet 2-1, prevent flame lift-off, and reduce the CO and NOx content of the combustion gas in the inner annular flame outlet 2-1.

[0084] Several lower flame stabilizing slots 2-3 are evenly distributed at equal intervals on the same circumference so as to better provide flame stabilization function for all internal flame outlets 2-1.

[0085] In this embodiment, the upper flame stabilizing groove 2-2 and the lower flame stabilizing groove 2-3 are arranged alternately to provide flame stabilization function for the entire inner flame cover 2.

[0086] To facilitate the fixing of thermocouple 6, thermocouple fixing holes 4-7 and auxiliary holes 4-11 are formed on the furnace head 4 for fixing thermocouple 6. Thermocouple fixing hole 4-7 is vertically arranged, and auxiliary hole 4-11 is inclined and connected to the middle position of thermocouple fixing hole 4-7. See [reference needed] Figure 17 As shown, thermocouple 6 passes sequentially through thermocouple mounting hole 4-7 on the burner head 4 and thermocouple through hole 3-9 on the gas distribution plate base 3-11. After thermocouple 6 passes through thermocouple mounting hole 4-7, a screw passes through auxiliary hole 4-11 and enters thermocouple mounting hole 4-7 to press tightly against thermocouple 6, so that thermocouple 6 and thermocouple mounting hole 4-7 are stably and reliably connected.

[0087] To facilitate the fixing of the ignition needle 7, an ignition needle fixing hole 4-8 is formed on the burner head 4 for fixing the ignition needle 7. The ignition needle 7 passes sequentially through the ignition needle fixing hole 4-8 on the burner head 4 and the ignition needle through hole 3-10 on the gas distribution plate base 3-11. A clearance area 4-10 is formed near the ignition needle fixing hole 4-8 on the burner head 4 to provide sufficient space for assembly and operation, facilitating the fixing of the ignition needle 7 to the ignition needle fixing hole 4-8. See [reference needed]. Figure 15As shown. The clearance area is located at the bottom of the lower outer ring cavity 4-1 and is recessed upward; in order to ensure structural consistency, a protrusion 4-9 is formed at the top of the lower outer ring cavity 4-1 corresponding to the clearance area.

[0088] As a preferred design scheme in this embodiment, see [link to example]. Figure 16 , Figure 17 As shown, a thermocouple through hole 3-9 is provided on the chassis 3-11. The thermocouple through hole 3-9 is adapted to thermocouple 6, which is inserted into the thermocouple through hole 3-9. A thermocouple waterproof sleeve 6-1 is installed between thermocouple 6 and thermocouple through hole 3-9. Thermocouple waterproof sleeve 6-1 is interference-fitted with thermocouple 6. Thermocouple waterproof sleeve 6-1 is first installed in thermocouple through hole 3-9, and thermocouple 6 is installed in thermocouple fixing hole 4-7. After the gas distribution plate 3 is installed on the burner head 4, the corresponding parts of thermocouple waterproof sleeve 6-1 and thermocouple 6 are tightly fitted together with an interference fit, without any gaps. This effectively prevents liquids such as water and soup from entering the thermocouple through hole 3-9 and avoids rust at the connection between thermocouple 6 and gas distribution plate 3, which would prevent disassembly.

[0089] As a preferred design scheme in this embodiment, see [link to example]. Figure 16 , Figure 18 As shown, an ignition needle through hole 3-10 is provided on the chassis 3-11. The ignition needle through hole 3-10 is adapted to the ignition needle 7, which is inserted into the ignition needle through hole 3-10. An ignition needle waterproof sleeve 7-1 is installed between the ignition needle 7 and the ignition needle through hole 3-10. The ignition needle waterproof sleeve 7-1 is interference-fitted with the ignition needle 7. The ignition needle waterproof sleeve 7-1 is first installed in the ignition needle through hole 3-10, and the ignition needle 7 is installed in the ignition needle fixing hole 4-8. After the gas distribution plate 3 is installed on the burner head 4, the ignition needle waterproof sleeve 7-1 and the corresponding part of the ignition needle 7 are tightly fitted together with an interference fit, without any gaps. This effectively prevents liquids such as water and soup from entering the ignition needle through hole 3-10 and avoids rust at the connection between the ignition needle 7 and the gas distribution plate 3, which would prevent disassembly.

[0090] Thermocouple waterproof sleeve 6-1 and ignition needle waterproof sleeve 7-1 are made of high-temperature resistant (greater than 270℃; after testing, the temperature of the ignition needle and thermocouple in this part does not exceed 250℃ during cooking), fire-resistant, and compressible elastic material, including but not limited to high-temperature silicone. The material is also high-temperature resistant, ensuring that the two waterproof sleeves do not deform even with frequent use of the stove, facilitating future disassembly.

[0091] As another preferred design in this embodiment, the chassis 3-11 has a thermocouple through hole 3-9, the diameter of which gradually increases from top to bottom, i.e., the thermocouple through hole 3-9 is a beveled design; the outer circumferential surface of the thermocouple 6 has a bevel 6-2 that matches the thermocouple through hole 3-9; the thermocouple 6 is installed in the thermocouple fixing hole 4-7. After the gas distribution plate 3 is installed on the burner head 4, the thermocouple 6 is inserted into the thermocouple through hole 3-9, and the bevel 6-2 of the thermocouple 6 fits tightly against the thermocouple through hole 3-9, with no gaps between them, preventing liquid from entering the thermocouple through hole 3-9, thus achieving the waterproof function of the thermocouple 6 and preventing the thermocouple 6 from rusting and becoming irremovable. See [reference needed] Figure 19 , Figure 20 .

[0092] As another preferred design in this embodiment, an ignition needle through hole 3-10 is provided on the chassis 3-11. The diameter of the ignition needle through hole 3-10 gradually increases from top to bottom, that is, the ignition needle through hole 3-10 is a beveled design. The outer peripheral surface of the ignition needle 7 has a bevel 7-2 that matches the ignition needle through hole 3-10. The ignition needle 7 is installed in the ignition needle fixing hole 4-8. After the gas distribution plate 3 is installed on the burner head 4, the ignition needle 7 is inserted into the ignition needle through hole 3-10. The bevel 7-2 of the ignition needle 7 fits tightly against the ignition needle through hole 3-10, with no gaps between them, preventing liquid from entering the ignition needle through hole 3-10, thus achieving the waterproof function of the ignition needle 7 and preventing leakage of electricity from the ignition needle 7. See [reference needed]. Figure 21 , Figure 22 .

[0093] Outer ring gas flow path: After the gas passes through the damper 8, a portion of the primary air is injected into the outer ring contraction pipe 5-1 of the ejector 5, then through the outer ring inlet pipe 4-3 of the burner head 4, then into the outer ring lower cavity 4-1 of the burner head 4, then through the gas distribution grille 3-4 of the gas distribution plate 3 into the outer ring channel 3-2, and finally into the outer ring cavity 1-8 of the outer burner cover 1, and then through the outer burner hole 1-1, the flame stabilizing hole 1-4, and the flame stabilizing groove 1-2 to be discharged for combustion.

[0094] Inner ring gas flow path: After the gas passes through the damper 8, a portion of the primary air is injected into the inner ring contraction pipe 5-2 of the ejector 5, then through the inner ring inlet pipe 4-4 of the burner head 4, then into the central lower channel 4-2 of the burner head 4, then into the central channel 3-3 of the gas distribution plate 3, and finally into the central cavity 1-8 of the inner flame cover 2, and then through the inner flame outlet hole 2-1, the upper flame stabilizer groove 2-2, and the lower flame stabilizer groove 2-3 to be discharged for combustion.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas stove, characterized in that, include: The outer flame cap includes an outer ring sidewall, an inner ring sidewall, and an annular top wall; the outer ring sidewall, inner ring sidewall, and annular top wall form an outer ring cavity; the bottom end face of the outer ring sidewall forms a first inclined surface, which is inclined upward towards the central axis of the outer flame cap. The inner flame cover includes an annular sidewall and a top cover; the annular sidewall and the top cover form a central cavity; the bottom end face of the annular sidewall forms a second inclined surface, which is inclined upward towards the central axis of the inner flame cover; The air distribution plate includes a central channel and an outer ring channel surrounding the central channel; the top surface of the outer ring sidewall of the outer ring channel has a first waterproof slope adapted to the first inclined surface; the first waterproof slope is in contact with the first inclined surface; the outer ring channel is in communication with the outer ring cavity; the top surface of the central ring wall of the central channel has a second waterproof slope adapted to the second inclined surface; the second waterproof slope is in contact with the second inclined surface; the central channel is in communication with the central cavity. A secondary air channel is provided around the central channel. One end of the secondary air channel is connected to the outside, and the other end of the secondary air channel is connected to the space between the inner ring sidewall of the outer ring channel and the central ring wall of the central channel. The base of the gas distribution plate is arranged at an angle from the central ring wall towards the edge of the base.

2. The gas stove according to claim 1, characterized in that, The chassis has a tilt angle of 1° to 5°.

3. The gas stove according to claim 1, characterized in that, Several air intake grilles are provided on the outer ring air intake formed at the position corresponding to the outer ring channel on the chassis.

4. The gas stove according to claim 1, characterized in that, The first inclined surface bends downward and extends on the side closest to the central axis of the outer fire cover to form the first vertical surface.

5. The gas stove according to claim 1, characterized in that, The second inclined surface bends downward and extends on the side closest to the central axis of the inner fire cover to form a second vertical surface.

6. The gas stove according to claim 1, characterized in that, The base of the gas distribution plate is provided with a thermocouple through hole adapted to the thermocouple. The thermocouple is inserted into the thermocouple through hole, and a thermocouple waterproof sleeve is installed between the thermocouple and the thermocouple through hole. The base of the gas distribution plate has an ignition needle through hole adapted to the ignition needle. The ignition needle is inserted into the ignition needle through hole, and an ignition needle waterproof sleeve is installed between the ignition needle and the ignition needle through hole.

7. The gas stove according to claim 1, characterized in that, The base of the gas distribution plate is provided with a thermocouple through hole, the diameter of which gradually increases from top to bottom; the outer peripheral surface of the thermocouple has an inclined surface that is adapted to the thermocouple through hole; the thermocouple is inserted into the thermocouple through hole, and the inclined surface of the thermocouple is in close contact with the thermocouple through hole. The base of the gas distribution plate has an ignition needle through hole, the diameter of which gradually increases from top to bottom; the outer circumferential surface of the ignition needle has an inclined surface that matches the ignition needle through hole; the ignition needle is inserted into the ignition needle through hole, and the inclined surface of the ignition needle fits tightly with the ignition needle through hole.

8. The gas stove according to claim 6 or 7, characterized in that, The burner head of the gas stove includes a central lower channel and an outer ring lower cavity surrounding the central lower channel. The central lower channel is connected to the central channel, and the outer ring lower cavity is connected to the outer ring channel. An ignition needle fixing hole is formed on the burner head, and the ignition needle passes through the ignition needle fixing hole on the burner head and the ignition needle through hole on the gas distribution plate base in sequence; a clearance zone is formed near the ignition needle fixing hole on the burner head.

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