Stir-frying burner and gas stove thereof

Abstract

The utility model discloses a stir-frying burner and a gas stove thereof, and the stir-frying burner comprises a burner structure which is provided with a middle gas mixing cavity and a direct injection gas mixing cavity; the middle ring fire cover is provided with a middle ring gas chamber, an upper gas chamber and a direct gas injection chamber, the middle ring gas chamber is located on the periphery of the direct gas injection chamber and communicates with the middle gas mixing cavity, and the upper gas chamber is arranged between the upper end of the middle ring gas chamber and the upper end of the direct gas injection chamber; the upper gas chamber is communicated with the middle-ring gas chamber and / or the direct-injection gas chamber, the direct-injection gas chamber is communicated with the direct-injection gas mixing cavity, a main fire hole set communicated with the middle-ring gas chamber is formed in the outer side wall of the middle-ring fire cover, a top fire hole set is formed in the top of the middle-ring fire cover, and the top fire hole set is communicated with the direct-injection gas mixing cavity. And the top fire hole group is respectively communicated with the middle ring air chamber and the direct injection air chamber. According to the stir-frying burner, a fire column can be additionally arranged in the center of the top of the middle ring fire cover, the center temperature of the pot bottom is increased, and explicit stir-frying fire is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, and in particular to a stir-fry burner and its gas stove. Background Technology

[0002] The existing one-button stir-fry burner has a central ring flame cap diameter greater than 40mm. The flame is emitted from the side of the central ring flame cap at a certain angle. The high-temperature area of ​​the flame is within an 80mm diameter range of the bottom of the wok, which easily results in a low temperature in the center of the wok, affecting the user experience. Increasing the heat of the central ring flame by 10% lengthens the flame, but the change is not significant, and the high-temperature area of ​​the wok extends further outward to within a 90mm diameter range, which is unsuitable for the needs of quick stir-frying. Summary of the Invention

[0003] This invention aims to at least partially solve one of the problems existing in the prior art. To this end, this invention proposes a high-heat stir-fry burner that adds a flame column to the top center of the central ring burner cap, increasing the center temperature of the pan and making the stir-fry flame more visible. This invention also provides a gas stove.

[0004] The stir-fry burner described above is achieved through the following technical solution:

[0005] A stir-fry burner includes: a burner head structure having an upward-opening intermediate mixing chamber and a direct injection mixing chamber, the direct injection mixing chamber being disposed within the intermediate mixing chamber; and a central ring burner cap disposed at the top of the burner head structure, the central ring burner cap having a central ring gas chamber, an upper gas chamber, and a direct injection chamber, the central ring gas chamber being located outside the direct injection chamber and its lower end communicating with the intermediate mixing chamber, the upper gas chamber being disposed between the upper end of the central ring gas chamber and the upper end of the direct injection chamber, and the upper gas chamber communicating with the central ring gas chamber and / or the direct injection chamber, the lower end of the direct injection chamber communicating with the direct injection mixing chamber, a main flame hole group being disposed on the outer wall of the central ring burner cap, the main flame hole group communicating with the central ring gas chamber, and a top flame hole group being disposed at the top of the central ring burner cap, the top flame hole group communicating with the central ring gas chamber and the direct injection chamber respectively.

[0006] In some embodiments, a group of direct-injection nozzles communicating with the middle annular air chamber is provided on the bottom surface or outer wall surface of the upper air chamber; and / or a plurality of circumferentially spaced pressure relief holes are provided at the upper end of the cavity wall of the direct-injection chamber, and the direct-injection chamber is connected to the upper air chamber through the pressure relief holes.

[0007] In some embodiments, the bottom surface of the upper air chamber is a plane or an inner inclined surface, the inner inclined surface being arranged radially from the outside in and upward; and / or the outer cavity wall of the upper air chamber is an outer inclined surface, the outer inclined surface being arranged radially from the inside out and upward, and the direct-fire nozzle group is disposed on the outer inclined surface.

[0008] In some embodiments, a liquid storage tank with an upward opening and located around the top of the top flame hole group is recessed at the top of the middle ring flame cap, and a guide groove communicating with the liquid storage tank is opened on the radially outer side of the top of the middle ring flame cap.

[0009] In some embodiments, an outwardly extending brim is provided on the top outer edge or upper end of the outer side wall of the middle ring flame cap, and an ignition hole group located directly below the brim is provided on the outer side wall of the middle ring flame cap, the ignition hole group being connected to the middle ring gas chamber.

[0010] In some embodiments, the middle ring flame cap includes: a flame cap body having the middle ring gas chamber and the direct jet chamber, an upper gas chamber recessed at the top of the flame cap body, and a main flame hole group communicating with the middle ring gas chamber on the outer side wall of the flame cap body; and a direct jet flame cap installed on the top of the flame cap body, having a top flame hole group on the direct jet flame cap, the top flame hole group communicating with the middle ring gas chamber and the direct jet chamber respectively.

[0011] In some embodiments, an outer ring flame cap is also included, and the burner head structure is further provided with an upward-opening outer mixing chamber, the outer mixing chamber being disposed outside the middle mixing chamber, and the outer ring flame cap being disposed on the top of the burner head structure and communicating with the outer mixing chamber.

[0012] In some embodiments, a flame distributor is also included. The flame distributor is disposed on the top of the burner head structure and has an outer annular gas chamber, a middle annular gas chamber, and a direct injection chamber. The middle annular gas chamber is disposed between the outer annular gas chamber and the direct injection chamber. A gas inlet is provided at the bottom of the outer annular gas chamber corresponding to the position of the outer mixing chamber. The outer annular gas chamber is connected to the outer mixing chamber through the gas inlet. The middle annular gas chamber is connected to the middle mixing chamber. The direct injection chamber is connected to the direct injection mixing chamber. An outer annular flame cap is disposed on the top of the flame distributor and is connected to the outer annular gas chamber. The middle annular flame cap is disposed on the top of the flame distributor. The lower end of the middle annular gas chamber is connected to the middle annular gas chamber. The lower end of the direct injection chamber is connected to the direct injection chamber.

[0013] In some embodiments, a baffle plate is also included, which is disposed above the gas inlet and connected to the flame distributor or the outer ring flame cap, and the baffle plate is provided with a plurality of gas equalization holes.

[0014] The gas stove described above is achieved through the following technical solution:

[0015] A gas stove includes: a stir-fry burner as described above, the stir-fry burner having an upward-opening outer mixing chamber, a middle mixing chamber, and a direct injection mixing chamber; and a stopcock valve, including a valve body assembly and a solenoid valve, the valve body assembly having an outer ring gas outlet, a middle ring gas passage, and a stir-fry gas passage, the outer ring gas outlet communicating with the outer mixing chamber, the middle ring gas passage communicating with the middle mixing chamber, the stir-fry gas passage communicating with the direct injection mixing chamber, and the solenoid valve disposed on the valve body assembly for controlling the opening and closing of the stir-fry gas passage.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. The stir-fry burner of this utility model has a main flame hole group on the side of the middle ring burner that is connected to the intermediate mixing chamber of the burner head structure through the middle ring gas chamber, and a top flame hole group on the top of the middle ring burner that is connected to the direct jet chamber of the burner head structure through the direct jet chamber. This allows the flame to be ejected from the side and top of the middle ring burner, thereby adding a flame column at the top center of the middle ring burner to increase the firepower by about 10%, which can further increase the center temperature of the pot bottom, speed up the stir-frying process, and at the same time improve the visibility of the stir-frying fire.

[0018] 2. By setting an upper gas chamber on the middle ring burner cap, which is connected to the middle ring gas chamber and the top fire hole group respectively, flames can be formed on the side and top of the middle ring burner cap even when the stir-frying fire is not activated, thus solving the problem of low pot bottom temperature caused by no flame at the top of the existing middle ring burner cap.

[0019] 3. By connecting the upper gas chamber to the direct jet chamber and the top burner group respectively, when the top burner group directly above the direct jet chamber is blocked, the gas in the direct jet chamber can flow to the upper gas chamber, preventing the gas from flowing back into the gas stove and causing danger after the central direct jet is blocked. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the gas stove in an embodiment of this utility model;

[0021] Figure 2 This is an exploded view of the burner in an embodiment of this utility model;

[0022] Figure 3 This is a cross-sectional view of the burner in an embodiment of the present invention. Figure 1 ;

[0023] Figure 4 This is a cross-sectional view of the burner in an embodiment of the present invention. Figure 2 .

[0024] Figure 5 This is a schematic diagram of the burner head structure in an embodiment of this utility model;

[0025] Figure 6 This is an exploded view of the furnace head structure in an embodiment of this utility model;

[0026] Figure 7 This is a cross-sectional view of the furnace head structure in an embodiment of this utility model;

[0027] Figure 8 This is an exploded view of the fire distribution structure in an embodiment of this utility model;

[0028] Figure 9 This is a schematic diagram of the fire separation structure in an embodiment of this utility model;

[0029] Figure 10 This is a schematic diagram of the structure of the flame divider in an embodiment of this utility model;

[0030] Figure 11 This is an exploded view of the middle ring flame cap in an embodiment of this utility model;

[0031] Figure 12 This is a cross-sectional view of the ring fire cover in an embodiment of this utility model;

[0032] Figure 13 This is a cross-sectional view of the plug valve in an embodiment of the present invention. Figure 1 ;

[0033] Figure 14 This is a cross-sectional view of the plug valve in an embodiment of the present invention. Figure 2 ;

[0034] Figure 15 This is a structural schematic diagram of the valve body assembly in an embodiment of this utility model.

[0035] In the diagram: 1-furnace head structure, 11-furnace head body, 111-outer mixing chamber, 1112-outer head mixing chamber, 112-middle mixing chamber, 1121-middle head mixing chamber, 113-direct injection mixing chamber, 1131-gas inlet channel, 1132-avoiding hole, 1141-vertical connection part, 1142-lateral connection part, 115-lug, 116-mounting boss, 12-outer ejector tube, 13-middle ejector tube, 14-direct injection ejector, 141-air hole, 142-head, 143-annular groove;

[0036] 2-Distributor, 21-Outer ring gas chamber, 211-Gas inlet, 212-First gradient surface, 213-Second gradient surface, 214-Arc-shaped surface, 22-Middle ring gas chamber, 221-Inner connecting rib, 222-Positioning block, 23-Direct jet chamber, 24-Secondary air passage, 241-Outer connecting rib, 242-Radial groove, 243-Protrusion, 244-Positioning notch, 25-Fixing seat, 26-Positioning rib; 3-Baffle plate, 31-Gas equalization hole, 32-Connecting arm, 331-First notch, 332-Second notch, 34-Positioning hole;

[0037] 4-Outer ring flame cap, 41-Outer ring gas chamber, 411-Outer ring flame hole; 5-Flame cap body, 51-Middle ring gas chamber, 511-Upper large flame hole, 512-Upper small flame hole, 513-Lower large flame hole, 514-Ignition hole, 515-Flame stabilizer ring, 52-Upper gas chamber, 521-Direct injection flame hole, 53-Direct injection chamber, 531-Pressure relief hole, 541-Liquid reservoir, 542-Guide groove, 55-Cap brim; 6-Direct injection flame cap, 61-Top flame hole;

[0038] 7-Plug valve, 71-Plug valve body, 710-Valve cavity, 711-Main air inlet, 712-Outer ring air outlet, 713-Middle ring air outlet, 714-Annular groove, 715-Air outlet channel, 72-Stir-fry valve body, 721-Middle ring air inlet channel, 722-Middle ring air passage, 723-Stir-fry air passage, 724-Mounting port, 73-Valve core assembly, 74-Solenoid valve, 751-Outer ring air pipe, 752-Middle ring air pipe, 753-Stir-fry air pipe;

[0039] 8-Ignition assembly. Detailed Implementation

[0040] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0041] Example 1

[0042] refer to Figure 1-7This embodiment provides a stir-fry burner, including a burner head structure 1, an outer ring burner cap 4, and a middle ring burner cap. The burner head structure 1 includes a burner head body 11, an ejector assembly, and a direct injection ejector 14. The burner head body 11 has an upward-opening outer mixing chamber 111, an upward-opening middle mixing chamber 112, an upward-opening direct injection mixing chamber 113, and a transversely arranged gas receiving channel 1131. The outer mixing chamber 111 is located outside the middle mixing chamber 112 and is arranged side by side with the middle mixing chamber 112 in the same direction with the middle mixing chamber 112 at intervals, so that the outer mixing chamber 111 is eccentrically set. Compared with the annular outer mixing chamber of the existing burner head, the burner head structure of this embodiment has a smaller overall size in the radial direction, and its outer mixing chamber 111 does not have the resistance loss caused by the turning flow channel, which is beneficial to the primary air coefficient of the outer ring flame and improves the mixing effect of the outer ring gas and air.

[0043] The direct injection mixing chamber 113 is located within the intermediate mixing chamber 112. One end of the gas inlet channel 1131 extends outward to the outer wall of the burner body 11, while the other end extends inward into the intermediate mixing chamber 112 and connects with the direct injection mixing chamber 113. When the direct injection mixed gas flows upward from the direct injection mixing chamber 113 and is ignited on the middle ring flame cap of the burner, a direct injection flame or a stir-fry flame is formed, thus adding a flame column and increasing the firepower by about 10%. This further increases the center temperature of the pan, speeds up the stir-frying process, and effectively enhances the visibility of the stir-fry flame. The ejector assembly is detachably installed on the burner body 11 and includes an outer ejector tube 12 and a middle ejector tube 13 arranged in the same direction and side by side. The outer ejector tube 12 is connected to the outer mixing chamber 111, and the middle ejector tube 13 is connected to the intermediate mixing chamber 112. The direct injection ejector 14 is detachably installed on the air inlet end of the air inlet channel 1131, so that the primary air injection of the direct injection fire is independent of the intermediate ring fire, which is beneficial to improving the stability of the direct injection fire.

[0044] refer to Figure 1-4 and Figure 11-12 The outer ring burner cap 4 is located on the top of the burner head structure 1 and is connected to the outer mixing chamber 111. Specifically, the outer burner cap 4 has a downward-opening outer ring gas chamber 41, and multiple outer ring flame holes 411 are provided on the outer side wall or top of the outer burner cap 4. The outer ring flame holes 411 are connected to the outer mixing chamber 111 through the outer ring gas chamber 41. When the outer ring combustion gas flows out from the outer burner cap 4 and is ignited, an outer ring flame is formed.

[0045] The central ring burner cap is located at the top of the burner head structure 1 and covers the upward openings of the intermediate mixing chamber 112 and the direct injection mixing chamber 113. The central ring burner cap includes a central ring gas chamber 51, an upper gas chamber 52, and a direct injection chamber 53. The central ring gas chamber 51 is located around the direct injection chamber 53, and its lower end is connected to the intermediate mixing chamber 112. The upper gas chamber 52 is located between the upper end of the central ring gas chamber 51 and the upper end of the direct injection chamber 53, and is connected to the central ring gas chamber 51 and / or the direct injection chamber 53. The lower end of the direct injection chamber 53 is connected to the direct injection mixing chamber 113. A main flame hole group is provided on the outer wall of the central ring burner cap, and the main flame hole group is connected to the central ring gas chamber 51. When the central ring combustion gas flows out from the main flame hole group on the side of the central ring burner cap and is ignited, a central ring side flame is formed. A top flame hole group is provided at the top of the middle ring burner cap. The top flame hole group is connected to the middle ring gas chamber 51 and the direct injection chamber 53 respectively. When the direct injection gas flows upward from the top flame hole group through the direct injection chamber 53 and is ignited, a direct injection fire is formed, which is a stir-fry fire.

[0046] As can be seen, when the gas stove activates the one-touch high-heat flame, an additional flame column is added to the center of the top of the middle ring burner of the high-heat burner, increasing the firepower by about 10%. This further increases the center temperature of the pan, speeds up cooking, and enhances the visibility and stability of the high-heat flame. Since the upper gas chamber 52 is connected to the middle ring gas chamber 51, a flame can be formed on the side and top of the middle ring burner even when the high-heat flame is not activated, solving the problem of low pan temperature caused by no flame at the top of the existing middle ring burner. Because the upper gas chamber 52 is connected to the direct injection chamber 53, when the top burner hole directly above the direct injection chamber 51 is blocked, the gas in the direct injection chamber can flow to the upper gas chamber 52, preventing the gas from flowing back into the gas stove and causing a hazard if the central direct injection flame is blocked.

[0047] refer to Figure 5-7 Specifically, the direct injection ejector 14 is arranged at a certain angle to the center of the burner head body 11, and the direct injection ejector 14 is arranged higher than the ejector assembly. One end of the direct injection ejector 14 is sealed to the air inlet end of the gas inlet channel 1131, and the other end is provided with at least one air hole 141 for primary air to pass through. In this embodiment, there are two air holes 141, but there can also be three or four. A head 142 protrudes outwardly at the end of the direct injection ejector 14 away from the burner head body 11, and / or at least one annular groove 143 is recessed in the middle of the outer side wall of the direct injection ejector 14. The annular groove 143 is designed between the air hole 141 and the gas inlet channel 1131.

[0048] Specifically, the bottom of the direct injection mixing chamber 113 and the gas inlet channel 1131 are both higher than the bottom surface of the intermediate mixing chamber 112. An airflow channel exists between the bottom of the direct injection mixing chamber 113 and the bottom surface of the intermediate mixing chamber 112, and this airflow channel is connected to the intermediate ejector tube 13. This prevents the arrangement of the direct injection mixing chamber 113 from affecting the air intake of the intermediate mixing chamber 112. In this embodiment, a downward-opening clearance hole 1132 is recessed at the bottom of the direct injection mixing chamber 113. The clearance hole 1132 is an arc-shaped hole with a higher center and lower ends, facilitating rapid demolding during the manufacturing of the furnace head body 11, allowing the intermediate ring mixed gas to pass through the bottom of the direct injection mixing chamber 113 and quickly fill the entire intermediate mixing chamber 112.

[0049] The lower end of the burner head body 11 is provided with an outer head mixing chamber 1112 and a middle head mixing chamber 1121 that open towards the ejector assembly. The outer head mixing chamber 1112 is located at the bottom of the outer mixing chamber 111, and the gas outlet end of the outer ejector tube 12 is inserted into the outer head mixing chamber 1112, and the outer ejector tube 12 is connected to the outer mixing chamber 111 through the outer head mixing chamber 1112. The middle head mixing chamber 1121 is located at the bottom of the middle mixing chamber 112, and the gas outlet end of the middle ejector tube 13 is inserted into the middle head mixing chamber 1121, and the middle ejector tube 13 is connected to the middle mixing chamber 112 through the middle head mixing chamber 1121.

[0050] A vertical connecting portion 1141 is provided between the outer mixing chamber 1112 and the middle mixing chamber 1121. The vertical connecting portion 1141 is used to strengthen the burner body 11 and also to detachably connect the ejector assembly. A horizontal connecting portion 1142 is provided between the upper end of the outer mixing chamber 111 and the upper end of the middle mixing chamber 112. The horizontal connecting portion 1142 is used to strengthen the burner body 11 and also to reliably support the liquid collection tray of the gas stove. Thus, through the cooperation of the vertical connecting portion 1141 and the horizontal connecting portion 1142, the outer mixing chamber 111 and the middle mixing chamber 112 are firmly and reliably connected as one unit.

[0051] Both the outer wall of the outer mixing chamber 111 and the outer wall of the middle mixing chamber 112 have outwardly extending lugs 115, which are used for detachably connecting the liquid collection tray or panel of the gas stove. The outer wall of the middle mixing chamber 112 has an outwardly extending mounting boss 116, which is used to fix the ignition assembly 8. Alternatively, the outer wall of the outer mixing chamber 111 can have a mounting boss 116 extending towards the middle ring gas chamber 22.

[0052] refer to Figure 11-12The main burner group includes an upper sub-burner group and / or a lower sub-burner group. The upper sub-burner group includes multiple upper large burner holes 511 and multiple upper small burner holes 512, which are arranged alternately in the circumferential direction. The lower sub-burner group includes multiple lower large burner holes 513 arranged at intervals in the circumferential direction. The lower large burner holes 513 are located below the spaces between two adjacent upper large burner holes 511 and directly below the adjacent upper small burner holes 512, so that the flame behind the lower large burner hole is staggered from the flame at the upper large burner hole, reducing interference between flames. Thus, the combined effect of the upper and lower sub-burner groups helps to improve the flame stability of the middle ring flame. In addition, a flame stabilizing ring 515 is provided on the outer wall of the burner cap body 5. The flame stabilizing ring 515 is located below the main burner group and communicates with the middle ring gas chamber 51.

[0053] refer to Figure 11-12 A direct injection nozzle group is provided on the bottom surface or outer wall of the upper gas chamber 52. The direct injection nozzle group includes multiple direct injection nozzles 521 arranged at intervals along the circumferential direction. The upper gas chamber 52 is connected to the middle ring gas chamber 51 through the direct injection nozzle group. In this way, the gas in the middle ring flows into the middle ring gas chamber 51 from the intermediate mixing chamber 112 of the burner head structure 1 and is divided into two paths. One path (most of the gas) flows directly out from the main flame nozzle group and is ignited to form the side flame of the middle ring. The other path (a small part of the gas) flows through the direct injection nozzle group and the upper gas chamber 52 in sequence, and finally flows upward from the top flame nozzle group and is ignited to form the top flame of the middle ring. This allows the flame to be ejected from the side and top of the middle ring flame cover, increasing the range and uniformity of the middle ring flame, and solving the problem of low pot bottom temperature caused by no flame at the top of the existing middle ring flame cover.

[0054] Multiple circumferentially spaced pressure relief holes 531 are provided on the upper end of the cavity wall of the direct jet chamber 53. The direct jet chamber 53 is connected to the upper gas chamber 52 through the pressure relief holes. This allows the top of the central ring burner to form a dense ring of small flames even when the gas stove is not turned on for stir-frying. Secondly, when the top burner hole directly above the direct jet chamber 53 is blocked, the gas in the direct jet chamber 53 can flow to the upper gas chamber 52, preventing the gas from flowing back into the gas stove and causing danger if the central direct jet flame is blocked.

[0055] refer to Figure 11-12 The upper air chamber 52 has a flared structure, so that the diameter of the upper air chamber 52 gradually increases from bottom to top. The bottom surface of the upper air chamber 52 is a plane or an inner inclined surface, with the inner inclined surface arranged radially from the outside in and upward; and / or the outer cavity wall surface of the upper air chamber 52 is an outer inclined surface, with the outer inclined surface arranged radially from the inside out and upward. The direct-fire nozzle group is disposed on the outer inclined surface, so that the air outlet direction of the direct-fire nozzle group is towards the center of the bottom of the pot. In this embodiment, the bottom surface of the upper air chamber 52 is an inner inclined surface, and the outer cavity wall surface of the upper air chamber 52 is an outer inclined surface, with the outer inclined surface and the inner inclined surface forming an obtuse angle. See [reference needed]. Figure 12 .

[0056] Furthermore, a liquid storage tank 541 with an upward opening and located around the top of the top flame hole group is recessed on the top of the flame cover body 5 of the middle ring flame cover. The liquid storage tank 541 is used to collect liquid overflowing from the pot. A guide channel 542 communicating with the liquid storage tank 541 is opened on the radially outer side of the top of the flame cover body 5 of the middle ring flame cover. The guide channel 542 is used to drain the liquid in the liquid storage tank 541 in a timely manner. Thus, with the cooperation of the liquid storage tank 541 and the guide channel 542, it is possible to prevent the liquid overflowing from flowing into the top flame hole group and / or the main flame hole group, thus preventing blockage of the flame holes and causing poor flame.

[0057] The liquid storage tank 541 has a flared structure so that the diameter of the liquid storage tank gradually increases from bottom to top. The liquid storage tank 541 has an inner tank wall and an outer tank wall arranged opposite to each other. The outer tank wall is arranged to bend upward from the inside to the outside in the radial direction, and the inner tank wall is arranged to be inclined upward from the outside to the inside in the radial direction. This facilitates the rapid diversion of the overflow liquid into the liquid storage tank and effectively prevents the overflow liquid from flowing into the top flame hole group and / or the main flame hole group and clogging the flame holes.

[0058] refer to Figure 11-12 Furthermore, an outwardly extending brim 55 is provided on the upper end of the outer side wall of the burner body 5 of the middle ring burner cover. An ignition hole group is provided on the outer side wall of the burner body 5 of the middle ring burner cover, located directly below the brim 55. The ignition hole group is connected to the middle ring gas chamber 51. In this embodiment, the ignition hole group consists of multiple ignition holes 514, thereby reliably protecting the head of the ignition hole group and the ignition component 8. This not only prevents the overflow liquid from dripping onto the ignition hole group and clogging the burner holes, but also prevents the overflow liquid from dripping onto the head of the ignition component, thereby preventing poor ignition.

[0059] refer to Figure 11-12 The intermediate ring flame cap includes a flame cap body 5 and a direct-injection flame cap 6. The flame cap body 5 has a downward-opening intermediate ring gas chamber 51 and direct-injection gas chambers 53 with openings at both the top and bottom. An upward-opening upper gas chamber 52 is recessed at the top of the flame cap body 5. A main flame port assembly communicating with the intermediate ring gas chamber 51 is formed on the outer wall of the flame cap body 5. A direct-injection flame port assembly communicating with the intermediate ring gas chamber 51 is formed on the bottom surface or outer wall of the upper gas chamber 52. The direct-injection flame cap 6 is installed on the top of the flame cap body 5 and covers the upward openings of the upper gas chamber 52 and the direct-injection gas chamber 53. A top flame port assembly is provided on the direct-injection flame cap 6, which is connected to the intermediate ring gas chamber 51 and the direct-injection gas chamber 53 respectively. In this embodiment, the direct-injection flame cap 6 is any one of a ceramic perforated plate, a honeycomb plate, or a metal mesh plate. The direct-injection flame cap 6 is riveted or welded to the top of the flame cap body 5. The top flame hole group includes a plurality of top flame holes 61 evenly distributed on the direct-injection flame cap 6. Due to the large porosity of the direct-injection flame cap 6, it is beneficial to improve the stability of combustion.

[0060] Example 2

[0061] refer to Figure 1-10 The difference between this embodiment and Embodiment 1 is that the stir-fry burner also includes a flame distributor 2, which is located between the burner head structure 1 and the burner cap structure. The flame distributor 2 has an outer ring gas chamber 21, a middle ring gas chamber 22, and a direct injection chamber 23 arranged coaxially. The middle ring gas chamber 22 is located between the outer ring gas chamber 21 and the direct injection chamber 23. A gas inlet 211 is provided at the bottom of the outer ring gas chamber 21 at the position corresponding to the outer mixing chamber 111. The outer ring gas chamber 21 is connected to the outer mixing chamber 111 through the gas inlet 211. The middle ring gas chamber 22 is connected to the middle mixing chamber 112, and the direct injection chamber 23 is connected to the direct injection mixing chamber 113.

[0062] An outer ring flame cap 4 is mounted on top of the flame distributor 2, and its outer ring chamber 41 is connected to the upper end of the outer ring chamber 21 of the flame distributor 2. A middle ring flame cap is mounted on top of the flame distributor 2 and located within the outer ring flame cap 4. Its middle ring chamber 51 is connected to the upper end of the middle ring chamber 22, and its direct jet chamber 52 is connected to the upper end of the direct jet chamber 23. Furthermore, the flame distributor 2 is also provided with a secondary air passage 24, which is located between the middle ring chamber 22 and the outer ring chamber 21, for providing secondary air required for combustion in the middle ring flame.

[0063] refer to Figure 8-10 A first gradient surface 212 and a second gradient surface 213 are formed on the bottom surface of the outer annular gas cavity 21. The second gradient surface 213 is located radially inside the first gradient surface 212. Both the first gradient surface 212 and the second gradient surface 213 extend clockwise from the gas inlet 211 and gradually rise, so that the outer annular gas cavity 21 is a gently sloping gradient channel. Correspondingly, the outlet of the gas inlet 211 has a flared structure, which helps to increase the volume of the outlet of the gas inlet 211, reduce the gas outlet pressure at the gas inlet 211, and effectively improve the phenomenon of uneven flame caused by excessive local flow velocity.

[0064] Furthermore, the width of the first gradient surface 212 in the radial direction gradually increases from the gas inlet 211 in a clockwise direction, and the width of the second gradient surface 213 in the radial direction gradually decreases from the gas inlet 211 in a clockwise direction; and / or the second gradient surface 213 extends radially from the first gradient surface 212 and is arranged with an upward inclination or curvature, so that the second gradient surface 213 is arranged with a lower radial outer end and a higher radial inner end, which is beneficial for guiding the airflow upward. In this embodiment, the arc length of the first gradient surface 212 is greater than the arc length of the second gradient surface 213; the arc length of the second gradient surface 213 is greater than 1 / 2 the circumference of the inner cavity wall of the outer annular gas cavity 21, and less than the circumference of the inner cavity wall of the outer annular gas cavity 21.

[0065] An arc-shaped surface 214 is provided between the higher end of the first gradient surface 212 and the gas inlet 211, that is, an arc-shaped surface 214 is provided at the right end of the gas inlet 211 in a clockwise direction. The arc-shaped surface 214 gradually rises from the gas inlet 211 towards the higher end of the first gradient surface 212, that is, the arc-shaped surface 214 extends from the gas inlet 211 in a counterclockwise direction and gradually rises upward, and / or the arc-shaped surface 214 gradually rises from the outside to the inside and upward in the radial direction. Thus, by cooperating with the first and second gradient surfaces, the volume at the outlet of the gas inlet 211 is further increased, which is more conducive to reducing the outlet gas pressure at the gas inlet 211.

[0066] refer to Figure 10 Furthermore, a plurality of external connecting ribs 241, arranged at intervals along the circumferential direction, connect the outer surface of the inner wall of the outer annular air chamber 21 and the outer surface of the outer wall of the middle annular air chamber 22. These external connecting ribs 241 divide the secondary air passage 24 into multiple parts, thereby reliably connecting the outer annular air chamber 21 and the middle annular air chamber 22 as a single unit. Similarly, a plurality of internal connecting ribs 221, arranged at intervals along the circumferential direction, connect the outer surface of the side wall of the direct jet chamber 23 and the inner surface of the outer wall of the middle annular air chamber 22, ensuring a reliable connection between the direct jet chamber 23 and the middle annular air chamber 22. A radially recessed groove 242, arranged radially and opening downwards, is provided at the bottom of the external connecting ribs 241 to save material.

[0067] A positioning block 222 extending inward is provided on the upper end of the inner surface of the inner wall of the middle ring gas chamber 22. The positioning block 222 is located above the inner connecting rib 221 and is used to pre-position the middle ring burner cap of the burner; and / or two protrusions 243 extending outward are provided on the outer surface of the inner wall of the middle ring gas chamber 22. A positioning notch 244 is formed between the two protrusions 243. The positioning notch 244 is used for the ignition assembly 8 in the burner to pass through vertically.

[0068] Example 3

[0069] refer to Figure 1-10The difference between this embodiment and Embodiment 2 is that it also includes a baffle plate 3. The baffle plate 3 is disposed above the gas inlet 211 and connected to the burner 2 or the outer ring flame cap 4. In this embodiment, the baffle plate 3 is detachably installed inside the outer ring gas chamber 21. The baffle plate 3 is provided with multiple gas equalization holes 31 to prevent the outer ring mixed gas from being directly ejected upward from the gas inlet 211. Most of the gas flows clockwise along the baffle plate 3, and a small portion of the gas flows upward through the gas equalization holes 31 on the baffle plate 3. This portion of the gas is slowed down by the holes of the baffle plate, and the gas flow rate is reduced, preventing the flame of the outer ring flame at the corresponding gas inlet from being too long. In addition, the gas equalization holes 31 on the baffle plate 3 can play a role in equalizing the gas flow, and the baffle plate 3, to a certain extent, prevents the combustion heat from radiating downward to the burner structure through the gas inlet 211, which helps to reduce the temperature rise of the burner structure.

[0070] Specifically, the two opposite ends of the baffle plate 3 in the radial direction abut against the inner and outer walls of the outer annular gas chamber 21, respectively, to reliably limit the baffle plate in the radial direction. The baffle plate 3 is covered with equalizing holes. Two fixing seats 25 are protruding from the inner surface of the outer wall of the outer annular gas chamber 21, respectively located on opposite sides of the gas inlet 211. Connecting arms 31 extending along the length direction are protruding from opposite ends of the baffle plate 3, and the connecting arms 31 are detachably connected to the corresponding fixing seats 25 by fasteners (e.g., screws). Furthermore, a support platform (not shown in the figure) is protruding from the inner wall of the outer annular gas chamber 21, which abuts against the radially inner end of the bottom of the baffle plate 3.

[0071] A positioning structure is provided between the radial outer end of the baffle plate 3 and the outer wall of the outer annular air cavity 21. The positioning structure includes a positioning rib 26 and a positioning hole 34. The positioning rib 26 extending toward the baffle plate 3 is integrally formed on the inner surface of the outer wall of the outer annular air cavity 21. The positioning hole 34 is recessed at the radial outer end of the positioning rib 26 corresponding to the position of the positioning rib. The positioning hole 34 cooperates with the positioning rib 26 to pre-position the baffle plate 3 and prevent the baffle plate 3 from shifting in the circumferential direction.

[0072] refer to Figure 8-9 A first notch 331 and a second notch 332 are provided at opposite ends along the length of the baffle 3. The size of the first notch 331 is smaller than that of the second notch 332. Both the first notch 331 and the second notch 332 are used to allow the outer ring gas to pass upward.

[0073] Example 4

[0074] refer to Figure 1-13This embodiment provides a gas stove with a stir-fry function, which includes a stopcock valve 7 and a stir-fry burner as described in any one of embodiments 1-3. The stir-fry burner is provided with an upward-opening outer mixing chamber 111, a middle mixing chamber 112, and a direct injection mixing chamber 113. The stopcock valve 7 includes a valve body assembly and a solenoid valve 74. The valve body assembly has a main air inlet 711, an outer ring air outlet 712, an air supply channel, a middle ring air passage 722, and a stir-fry air passage 723. The outer ring air outlet 712 and the air supply channel are arranged side by side in the same direction and at intervals. The main air inlet 711 is selectively connected to the outer ring air outlet 712 and / or the air supply channel. The outer ring air outlet 712 is connected to the outer mixing chamber 111. The two ends of the middle ring air passage 722 are respectively connected to the air supply channel and the middle mixing chamber 112. The stir-fry air passage 723 is respectively connected to the air supply channel and the direct injection mixing chamber 113. The solenoid valve 74 is disposed on the valve body assembly and is used to control the opening and closing of the stir-fry air passage 723.

[0075] It is evident that by adding a stir-fry gas passage to the stopcock valve to provide stir-fry gas to the gas stove and realize the stir-fry function, it is possible to avoid setting a throttling orifice on the gas passage of the central ring flame to control the flow of the central ring flame. This is beneficial to improving the stability of the central ring flame and the stability and visibility of the stir-fry flame.

[0076] refer to Figure 13-15 The valve body assembly includes a plug valve body 71 and a stir-fry valve body 72. The plug valve body 71 has an upward-opening valve chamber 710, a main air inlet 711, an outer ring air outlet 712, and a middle ring air outlet 713. The outer ring air outlet 712 and the middle ring air outlet 713 are arranged side by side in the same direction with intervals. The stir-fry valve body 72 is detachably installed at the middle ring air outlet 713 of the plug valve body 71. The stir-fry valve body 72 has a middle ring air inlet channel 721, a middle ring air passage 722, and a stir-fry air passage 723. The middle ring air inlet channel 721 is L-shaped, with one end connected to the middle ring air outlet 713 to form an air supply channel, and the other end connected to both the middle ring air passage 722 and the stir-fry air passage 723. It can be seen that the middle ring air passage 722 and the stir-fry air passage 723 are independent of each other, and there is no throttling orifice on the middle ring air passage 722, which is beneficial to improving the stability of the middle ring flame.

[0077] The valve core assembly 73 is movably disposed within the valve cavity 710 and is used to control the connection status between the main air inlet 711 and the outer ring air outlet 712 and / or the air supply channel, thereby allowing the main air inlet 711 to selectively connect with the outer ring air outlet 712 and / or the air supply channel. An installation port 724, communicating with the stir-fry air passage 723, is provided on the stir-fry valve body 72 at a position corresponding to the stir-fry air passage 723. A solenoid valve 74 is disposed at the installation port 724 and detachably connected to the stir-fry valve body 72. This solenoid valve 74 is used to control the on / off state of the stir-fry air passage 723.

[0078] refer to Figure 13-15The central axes of the outer ring air outlet 712 and the middle ring air outlet 713 are located on the same plane, and the central axis of the middle ring air outlet 713 is located on the same plane as the central axis of the middle ring air passage 722; the central axis of the stir-fry air passage 723 is higher than the central axis of the middle ring air outlet 713 and the central axis of the middle ring air passage 722, respectively. An annular groove 714 is recessed at the lower end of the cavity wall of the valve cavity 710, and an air outlet passage 715 is provided on the plug valve body 71 of the valve body assembly, which is inclined upward. The lower end of the air outlet passage 715 is connected to the annular groove 714, and the higher end is connected to the middle ring air outlet 713 of the air supply passage.

[0079] The following is combined Figure 1-4 To illustrate the firepower pattern of the gas stove in this embodiment:

[0080] When the outer ring gas flows out from the outer ring outlet 712 of the stopcock valve 7, it passes through the outer ring gas pipe 751, the outer injector pipe 12 of the burner head structure 1, and the outer mixing chamber 111, and finally flows out from the outer burner cap 4 and is ignited, forming an outer ring flame. See [link to documentation]. Figure 1-3 .

[0081] When the gas flows out of the gas supply channel of the stopcock valve 7, it is divided into two parts. One part passes through the middle ring gas passage 722, the middle ring gas pipe 752, the middle injector pipe 13 of the burner head structure 1, and the middle mixing chamber 112 in sequence. After entering the middle ring burner cap, it is divided into two paths. One path flows directly out from the main flame hole group on the side of the middle ring burner cap and is ignited, forming the middle ring side flame. The other path flows through the direct injection flame hole group and the upper gas chamber 52 in sequence, and finally flows upward from the top flame hole group at the top of the middle ring burner cap and is ignited, forming the middle ring top flame. See [reference needed]. Figure 1-3 The other part passes sequentially through the stir-fry gas duct 723, the stir-fry gas pipe 753, the direct injection ejector 14 and the direct injection mixing chamber 113 of the burner structure 1, and the direct injection chamber 53 of the central ring burner cap. Finally, it flows directly upward from the direct injection burner cap of the central ring burner cap and is ignited, forming a direct injection fire, i.e., a stir-fry fire. See [link to relevant documentation]. Figure 1-4 .

[0082] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A wok burner, characterized in that, The application relates to a furnace head structure (1) provided with a middle mixing cavity (112) with an upward opening and a straight injection mixing cavity (113) arranged in the middle mixing cavity (112), and a middle ring fire cover arranged on the top of the furnace head structure (1), wherein the middle ring fire cover is provided with a middle ring gas chamber (51), an upper gas chamber (52) and a straight injection gas chamber (53), the middle ring gas chamber (51) is located at the periphery of the straight injection gas chamber (53) and is connected with the middle mixing cavity (112) at the lower end, the upper gas chamber (52) is arranged between the upper end of the middle ring gas chamber (51) and the upper end of the straight injection gas chamber (53), and the upper gas chamber (52) is connected with the middle ring gas chamber (51) and / or the straight injection gas chamber (53), and the lower end of the straight injection gas chamber (53) is connected with the straight injection mixing cavity (113). A main fire hole group is arranged on the outer wall of the middle ring fire cover and is connected with the middle ring gas chamber (51), and a top fire hole group is arranged on the top of the middle ring fire cover and is connected with the middle ring gas chamber (51) and the straight injection gas chamber (53) respectively. A straight injection fire hole group is arranged on the bottom surface or the outer cavity wall surface of the upper gas chamber (52) and is connected with the middle ring gas chamber (51), and / or a plurality of pressure relief holes are arranged on the cavity wall upper end of the straight injection gas chamber (53) and are connected with the upper gas chamber (52). The bottom surface of the upper gas chamber (52) is a plane or an inner inclined surface, the inner inclined surface is arranged to be inclined upwards from outside to inside along the radial direction, and / or the outer cavity wall surface of the upper gas chamber (52) is an outer inclined surface, the outer inclined surface is arranged to be inclined upwards from inside to outside along the radial direction, and the straight injection fire hole group is arranged on the outer inclined surface.

2. A wok burner as claimed in claim 1, wherein A liquid storage groove (541) is arranged on the top of the middle ring fire cover and is connected with the top fire hole group and the guide flow groove (542).

3. A wok burner as claimed in claim 2, wherein A hat brim (55) is arranged on the top outer edge or the outer wall upper end of the middle ring fire cover and extends outward, and an ignition hole group is arranged on the outer wall of the middle ring fire cover and is connected with the middle ring gas chamber (51).

4. A wok burner as claimed in claim 1, wherein The middle ring fire cover comprises a fire cover body (5) provided with the middle ring gas chamber (51) and the straight injection gas chamber (53), a top fire hole group is arranged on the outer wall of the fire cover body (5) and is connected with the middle ring gas chamber (51), and a straight injection fire cover (6) is arranged on the top of the fire cover body (5) and is provided with a top fire hole group connected with the middle ring gas chamber (51) and the straight injection gas chamber (53) respectively.

5. A wok burner as claimed in claim 1, wherein ​ 6. A wok burner according to any one of claims 1 to 5, wherein ​ ​ ​ 7. A wok burner as claimed in claim 1, wherein Further comprising an outer ring fire cover (4), the furnace end structure (1) is further provided with an upwardly open outer gas mixing chamber (111), the outer gas mixing chamber (111) is arranged outside the middle gas mixing chamber (112), and the outer ring fire cover (4) is arranged on the top of the furnace end structure (1) and communicates with the outer gas mixing chamber (111).

8. A wok burner as claimed in claim 7, wherein Further comprising a distributor (2), the distributor (2) is arranged on the top of the furnace end structure (1), and is provided with an outer ring gas chamber (21), a middle ring gas chamber (22) and a straight jet gas chamber (23), the middle ring gas chamber (22) is arranged between the outer ring gas chamber (21) and the straight jet gas chamber (23), a gas inlet (211) is arranged at the bottom of the outer ring gas chamber (21) corresponding to the position of the outer gas mixing chamber (111), the outer ring gas chamber (21) communicates with the outer gas mixing chamber (111) through the gas inlet (211), the middle ring gas chamber (22) communicates with the middle gas mixing chamber (112), and the straight jet gas chamber (23) communicates with the straight jet gas mixing chamber (113). The outer ring fire cover (4) is arranged on the top of the distributor (2) and communicates with the outer ring gas chamber (21), and the middle ring fire cover is arranged on the top of the distributor (2), the lower end of the middle ring gas chamber (51) communicates with the middle ring gas chamber (22), and the lower end of the straight jet gas chamber (53) communicates with the straight jet gas chamber (23).

9. A wok burner as claimed in claim 8, wherein Further comprising a baffle (3), the baffle (3) is arranged above the gas inlet (211) and connected with the distributor (2) or the outer ring fire cover (4), and a plurality of gas equalizing holes (31) are arranged on the baffle (3).

10. A gas hob, characterized in that Comprise: The explosive stir-burning burner according to any one of claims 1-9, wherein the explosive stir-burning burner is provided with an upwardly open outer gas mixing chamber (111), a middle gas mixing chamber (112) and a straight jet gas mixing chamber (113); and A plug valve (7) comprising a valve body assembly and a solenoid valve (74), the valve body assembly is provided with an outer ring gas outlet (712), a middle ring gas channel (722) and an explosive stir-burning gas channel (723), the outer ring gas outlet (712) communicates with the outer gas mixing chamber (111), the middle ring gas channel (722) communicates with the middle gas mixing chamber (112), the explosive stir-burning gas channel (723) communicates with the straight jet gas mixing chamber (113), and the solenoid valve (74) is arranged on the valve body assembly and used for controlling the opening and closing of the explosive stir-burning gas channel (723).

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