Plug valve with stir-frying function and gas stove with plug valve

Abstract

The utility model discloses a plug valve with a stir-frying function and a gas stove thereof, the plug valve comprises a valve body assembly, the valve body assembly is provided with a main gas inlet, an outer ring gas outlet, a gas supply channel, a middle ring gas channel and a stir-frying gas channel, the outer ring gas outlet and the gas supply channel are arranged side by side at intervals in the same direction, and the middle ring gas channel and the stir-frying gas channel are communicated with each other; the main air inlet is selectively communicated with the outer ring air outlet and / or the air supply channel, and the middle ring air channel and the stir-frying air channel are respectively communicated with the air supply channel; and the electromagnetic valve is arranged on the valve body assembly and is used for controlling the on-off of the stir-frying air passage. According to the plug valve, the quick frying function is achieved, and meanwhile the stability of middle ring fire can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas stove technical field especially relates to a cock valve with explosive stir -frying function and gas stove. BACKGROUND

[0002] The present one key explosive stir -frying fire burner's middle ring fire cover diameter is greater than 40mm, and the flame is sprayed from the side of middle ring fire cover with a certain angle, and the high temperature area of flame is in the range of the diameter 80mm of the bottom of the sharp bottom pot, and it is easy to cause the temperature of the center of the pot bottom to be low. When the firepower of the middle ring fire increases by 10%, although the middle ring flame is lengthened, the flame change is not obvious, and the high temperature area of the sharp bottom pot will be further extended to the range of the diameter 90mm of the pot bottom, which is not conducive to the quick cooking demand.

[0003] The present gas stove realizes explosive stir -frying by setting throttle hole on the middle ring fire gas passage to control the flow of middle ring fire, and this explosive stir -frying scheme can reduce the stability of middle ring fire, and the flame change is not obvious during explosive stir -frying. SUMMARY

[0004] The utility model aims at at least in a certain extent solves one of the problems existing in prior art related art, and for this purpose, the utility model provides a cock valve with explosive stir -frying function, realizes explosive stir -frying function, and not only is favorable to improving the stability of middle ring fire, and is favorable to improving the stability and explicitness of explosive stir -frying fire. The utility model further provides a gas stove.

[0005] According to the above-mentioned cock valve with explosive stir -frying function, the following technical scheme is used to realize it:

[0006] A cock valve with explosive stir -frying function, comprising: valve body assembly, is equipped with main air inlet, outer ring air outlet, gas supply channel, middle ring gas channel and explosive stir -frying gas channel, the outer ring air outlet and the gas supply channel are arranged in the same direction and are spaced apart side by side, the main air inlet is selectively communicated with the outer ring air outlet and / or the gas supply channel, the middle ring gas channel and the explosive stir -frying gas channel are communicated with the gas supply channel respectively;And solenoid valve is set up on the valve body assembly and is used to control the on-off of the explosive stir -frying gas channel.

[0007] In some embodiments, the valve body assembly comprises: a cock valve body provided with the main air inlet, the outer ring air outlet and the middle ring air outlet, the outer ring air outlet and the middle ring air outlet are arranged in the same direction and are spaced apart side by side;Explosive stir -frying valve body is detachably connected with the cock valve body, and the explosive stir -frying valve body is provided with middle ring air inlet channel, the middle ring gas channel and the explosive stir -frying gas channel, and the middle ring air inlet channel is communicated with the middle ring air outlet to form the gas supply channel.

[0008] In some embodiments, the central axes of the outer ring gas outlet and the middle ring gas outlet are located on the same plane, and the stir-frying gas channel is higher than the middle ring gas channel.

[0009] In some embodiments, a valve core assembly is further included, the valve body assembly is further provided with a valve cavity opening upward, and the valve core assembly is movably arranged in the valve cavity to control the communication state of the main gas inlet with the outer ring gas outlet and / or the gas supply channel.

[0010] In some embodiments, an annular groove is concavely arranged at the lower end of the cavity wall of the valve cavity, and a gas outlet channel is arranged on the valve body assembly and inclined upward, the lower end of the gas outlet channel is connected with the annular groove, and the upper end of the gas outlet channel is connected with the gas supply channel.

[0011] According to the above-mentioned gas stove, the following technical scheme is adopted:

[0012] A gas stove comprises a burner structure, a valve body structure, and a valve core structure, wherein the burner structure is provided with an outer mixing gas cavity, a middle mixing gas cavity, and a direct injection mixing gas cavity, the outer mixing gas cavity is arranged outside the middle mixing gas cavity, and the direct injection mixing gas cavity is arranged inside the middle mixing gas cavity; the valve body structure comprises an outer ring fire cover and a middle ring fire cover, the outer ring fire cover is arranged on the top of the outer mixing gas cavity, and the middle ring fire cover is arranged on the top of the middle mixing gas cavity and the top of the direct injection mixing gas cavity, respectively; and the valve core structure is as described above, the outer ring gas outlet is connected with the outer mixing gas cavity, the middle ring gas channel is connected with the middle mixing gas cavity, and the stir-frying gas channel is connected with the direct injection mixing gas cavity.

[0013] In some embodiments, a gas connection channel is arranged on the burner structure, one end of the gas connection channel extends outward to the outside of the lateral wall of the burner structure and is connected with the stir-frying gas channel, and the other end of the gas connection channel extends inward into the middle mixing gas cavity and is connected with the direct injection mixing gas cavity.

[0014] In some embodiments, the middle ring fire cover comprises a fire cover body and a direct injection fire cover, the fire cover body is provided with a middle ring gas chamber, a direct injection gas chamber, and a main fire hole group, the main fire hole group is connected with the middle mixing gas cavity through the middle ring gas chamber, and the lower end of the direct injection gas chamber is connected with the direct injection mixing gas cavity; the direct injection fire cover is mounted on the top of the fire cover body, the direct injection fire cover is connected with only the direct injection gas chamber, or the direct injection fire cover is connected with the middle ring gas chamber and the direct injection gas chamber, respectively.

[0015] In some embodiments, a flame divider is also included, which is disposed between the burner head structure and the flame cap structure. The flame divider has an outer ring gas chamber, a middle ring gas chamber, and a direct injection chamber. The middle ring gas chamber is disposed between the outer ring gas chamber and the direct injection chamber. A gas inlet is provided at the bottom of the outer ring gas chamber. The outer ring gas chamber is connected to the outer mixing chamber through the gas inlet. The middle ring gas chamber is connected to the middle mixing chamber. The direct injection chamber is connected to the direct injection mixing chamber. The outer ring flame cap is connected to the outer ring gas chamber. The middle ring flame cap is connected to both the middle ring gas chamber and the direct injection chamber.

[0016] 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.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] This utility model's plug valve, by setting independent central ring gas passages and stir-fry gas passages in the valve body assembly, with the central ring gas passages and stir-fry gas passages respectively connected to the same gas supply channel, and a solenoid valve set on the valve body assembly to control the opening and closing of the stir-fry gas passage, compared with the existing stir-frying scheme that sets a throttling orifice in the central ring gas passage to control the flow of the central ring flame to achieve stir-frying, not only improves the stability of the central ring flame while achieving the stir-frying function, but also improves the stability and visibility of the stir-frying flame. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the plug valve in an embodiment of this utility model;

[0020] Figure 2 This is a cross-sectional view of the plug valve in an embodiment of the present invention. Figure One ;

[0021] Figure 3 This is a cross-sectional view of the plug valve in an embodiment of the present invention. Figure Two ;

[0022] Figure 4 This is a schematic diagram of the valve body assembly in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the gas stove in an embodiment of this utility model;

[0024] Figure 6 This is an exploded view of the stir-fry burner in an embodiment of this utility model;

[0025] Figure 7 This is a cross-sectional view of the stir-fry burner in an embodiment of this utility model. Figure One ;

[0026] Figure 8 is the cross section of the explosive frying burner in the embodiment of the utility model Figure Two .

[0027] In the figure: 1 - furnace head structure, 11 - furnace head body, 111 - outer mixed gas cavity, 112 - middle mixed gas cavity, 113 - straight injection mixed gas cavity, 1131 - gas connection channel, 12 - outer ejector pipe, 13 - middle ejector pipe, 14 - straight injection ejector;

[0028] 2 - fire divider, 21 - outer ring gas cavity, 211 - gas inlet, 22 - middle ring gas cavity, 23 - straight injection gas cavity, 24 - secondary air channel; 3 - flow baffle, 31 - gas equalizing hole;

[0029] 4 - outer ring fire cover, 41 - outer ring gas chamber, 411 - outer ring fire hole; 5 - fire cover body, 51 - middle ring gas chamber, 52 - upper gas chamber, 53 - straight injection gas chamber; 6 - straight injection fire cover;

[0030] 7 - plug valve, 71 - plug valve body, 710 - valve cavity, 711 - main gas inlet, 712 - outer ring gas outlet, 713 - middle ring gas outlet, 714 - annular groove, 715 - gas outlet channel, 72 - explosive frying valve body, 721 - middle ring gas inlet channel, 722 - middle ring gas channel, 723 - explosive frying gas channel, 724 - mounting port, 73 - valve core assembly, 74 - electromagnetic valve, 751 - outer ring gas pipe, 752 - middle ring gas pipe, 753 - explosive frying gas pipe;

[0031] 8 - ignition assembly. DETAILED DESCRIPTION

[0032] The following embodiments are used to illustrate the utility model, but the utility model is not limited by these embodiments. The specific implementation of the utility model is modified or some technical features are replaced equivalently without departing from the spirit of the utility model scheme, and they should be covered in the technical scheme range of the utility model claimed.

[0033] Embodiment 1

[0034] Reference Figures 1-4The embodiment provides a cock valve with a stir-frying function, which is applied to a gas stove. The cock valve 7 comprises a valve body assembly (not shown in the figure), a valve core assembly 73 and an electromagnetic valve 74. The valve body assembly is provided with a valve cavity 710 which is upwardly open, a main air inlet 711, an outer ring air outlet 712, a gas supply channel, a middle ring air channel 722 and a stir-frying gas channel 723. The valve cavity 710 is in communication with the main air inlet 711, the outer ring air outlet 712 and the gas supply channel respectively. In the embodiment, the outer ring air outlet 712 and the gas supply channel are arranged in the same direction and side by side at intervals. The gas supply channel is in the shape of an "L" letter. The middle ring air channel 722 and the stir-frying gas channel 723 are in communication with the gas supply channel respectively. The valve core assembly 73 is movably arranged in the valve cavity 710 and is used for controlling the communication state of the main air inlet 711 with the outer ring air outlet 712 and / or the gas supply channel, so that the main air inlet 711 is selectively in communication with the outer ring air outlet 712 and / or the gas supply channel. The electromagnetic valve 74 is arranged on the valve body assembly and is used for controlling the on-off state of the stir-frying gas channel 723.

[0035] It can be seen that, by adding a stir-frying gas channel on the cock valve to provide stir-frying gas for the gas stove, the stir-frying function is realized, the flow of the middle ring fire can be controlled by arranging a throttle hole on the middle ring fire gas channel to realize stir-frying, the stability of the middle ring fire is improved, and the stability and explicitness of the stir-frying fire are improved.

[0036] Reference Figures 3-4 The valve body assembly comprises a cock valve body 71 and a stir-frying valve body 72. The cock valve body 71 is provided with a valve cavity 710 which is upwardly open, 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 in the same direction and side by side at intervals. The stir-frying valve body 72 is detachably arranged at the middle ring air outlet 713 of the cock valve body 71. The stir-frying valve body 72 is provided with a middle ring air inlet channel 721, a middle ring air channel 722 and a stir-frying gas channel 723. The middle ring air inlet channel 721 is in the shape of an "L" letter. One end of the middle ring air inlet channel 721 is in communication with the middle ring air outlet 713 to form a gas supply channel. The other end of the middle ring air inlet channel 721 is in communication with the middle ring air channel 722 and the stir-frying gas channel 723 respectively. It can be seen that the middle ring air channel 722 and the stir-frying gas channel 723 are independent of each other, and there is no throttle hole on the middle ring air channel 722, which is beneficial to improve the stability of the middle ring fire.

[0037] In the embodiment, an installation opening 724 which is in communication with the stir-frying gas channel 723 is arranged at the position of the stir-frying valve body 72 corresponding to the stir-frying gas channel 723. The electromagnetic valve 74 is arranged at the installation opening 724 and is detachably connected with the stir-frying valve body 72. The electromagnetic valve 74 is used for controlling the on-off state of the stir-frying gas channel 723.

[0038] Reference Figures 2-4, the center axis of the outer ring gas outlet 712 and the center axis of the middle ring gas outlet 713 are located in the same plane, and the center axis of the middle ring gas outlet 713 and the center axis of the middle ring gas channel 722 are located in the same plane; the center axis of the stir-frying gas channel 723 is higher than the center axis of the middle ring gas outlet 713 and the center axis of the middle ring gas channel 722.

[0039] With reference to Figure 2 , an annular groove 714 is recessed at the lower end of the cavity wall of the valve cavity 710, and the valve body assembly is provided with a gas outlet channel 715 arranged obliquely upward, the lower end of the gas outlet channel 715 is connected with the annular groove 714, and the upper end is connected with the middle ring gas outlet 713 of the gas supply channel.

[0040] Embodiment 2

[0041] With reference to Figures 5-8 , the gas stove of the embodiment comprises a stir-frying burner and a plug valve as described in Embodiment 1, wherein the stir-frying burner comprises a burner head structure 1 and a fire cover structure (not shown in the figure). The burner head structure 1 comprises a burner head body 11, an injection assembly, and a straight injection ejector 14, the burner head body 11 is provided with an upwardly open outer mixing gas chamber 111, a middle mixing gas chamber 112, and a straight mixing gas chamber 113, the outer mixing gas chamber 111 is arranged outside the middle mixing gas chamber 112, in this embodiment, the outer mixing gas chamber 111 is arranged in the same direction and in parallel and spaced apart with the middle mixing gas chamber 112, at this time, the outer mixing gas chamber 111 is arranged eccentrically, and the straight mixing gas chamber 113 is arranged inside the middle mixing gas chamber 112. The injection assembly comprises an outer injection pipe 12 and an inner injection pipe 13 arranged in the same direction, in parallel, and spaced apart. The fire cover structure comprises an outer ring fire cover 4 and a middle ring fire cover (not shown in the figure), the outer ring fire cover 4 is arranged on the top of the outer mixing gas chamber 111, and the middle ring fire cover is arranged on the top of the middle mixing gas chamber 112 and the top of the straight mixing gas chamber 113, respectively.

[0042] The outer ring gas outlet 712 of the plug valve 7 is connected with the outer mixing gas chamber 111 in sequence through the outer ring gas pipe 751, the outer injection pipe 12, the middle ring gas channel 722 of the plug valve 7 is connected with the middle mixing gas chamber 112 in sequence through the middle ring gas pipe 752, the inner injection pipe 13, and the stir-frying gas channel 723 of the plug valve 7 is connected with the straight mixing gas chamber 113 in sequence through the stir-frying gas pipe 753, the straight injection ejector 14.

[0043] When the gas flows out of the outer ring gas outlet 712 of the plug valve 7, it successively passes through the outer ring gas pipe 751, the outer injection pipe 12 of the burner head structure 1, and the outer mixing gas chamber 111, and finally flows out of the outer ring fire cover 4 and is ignited to form an outer ring fire, see Figure 7 When the gas flows out of the gas supply channel of the plug valve 7, it is divided into two parts, one part successively passes through the middle ring gas channel 722, the middle ring gas pipe 752, the middle injection pipe 13 of the burner head structure 1, and the middle mixing gas chamber 112, and finally flows out of the middle ring fire cover and is ignited to form a middle ring fire, seeFigure 7 ; another part sequentially passes through the stir-frying gas channel 723, the stir-frying gas pipe 753, the straight injection ejector 14 of the burner head structure 1 and the straight injection mixing chamber 113, and finally flows out from the middle ring fire cover and is ignited to form a straight injection fire, i.e. a stir-frying fire, as shown in Figure 8 .

[0044] It can be seen that when the gas stove starts the one-key stir-frying fire, a fire column is added at the top center of the middle ring fire cover of the stir-frying burner to increase the firepower by about 10%, so as to further improve the central temperature of the pot bottom, speed up the cooking speed, and improve the explicitness and stability of the stir-frying fire. In addition, since the gas paths of the middle ring fire and the stir-frying fire are independent of each other, and there is no throttle hole on the middle ring gas channel 722 of the plug valve 7, the stability of the middle ring fire is improved; by separately designing a straight injection ejector 14 on the burner head structure 1, the stability of the straight injection fire is improved.

[0045] Referring to Figures 5-8 , the burner head structure 1 is provided with a gas connection channel 1141, one end of the gas connection channel 1141 extends outward to the outside wall of the burner head structure 1, and it is connected with the stir-frying gas channel 723 through the straight injection ejector 14, the other end extends inward into the middle mixing chamber 112 and is connected with the straight injection mixing chamber 113, so as to facilitate the straight injection mixing chamber 113 to connect the gas through the gas connection channel 1141 and the straight injection ejector 14, and ensure the stability of the straight injection fire. In this embodiment, the straight injection ejector 14 is arranged at a certain angle with the center of the burner head body 11, and the straight injection ejector 14 is higher than the injection assembly.

[0046] Referring to Figures 5-8 , the outer fire cover 4 is provided with a downwardly open outer ring gas chamber 41, and a plurality of outer ring fire holes 411 are arranged on the outer side wall or top of the outer fire cover 4, and the outer ring fire holes 411 are connected with the outer mixing chamber 111 through the outer ring gas chamber 41. The middle ring fire cover includes a fire cover body 5 and a straight injection fire cover 6, the fire cover body 5 is provided with a middle ring gas chamber 51, a straight injection gas chamber 53 and a main fire hole group (not shown in the figure), the main fire hole group is connected with the middle mixing chamber 112 through the middle ring gas chamber 51, and the lower end of the straight injection gas chamber 53 is connected with the straight injection mixing chamber 113. The straight injection fire cover 6 is installed on the top of the fire cover body 5 and is provided with densely distributed top fire holes, and the straight injection fire cover 6 can only be connected with the straight injection gas chamber 53, of course, the straight injection fire cover 6 can also be connected with the middle ring gas chamber 51 and the straight injection gas chamber 53 respectively. This embodiment takes the example that the straight injection fire cover 6 is connected with the middle ring gas chamber 51 and the straight injection gas chamber 53 respectively, so that when the gas stove does not start the stir-frying fire, the top of the middle ring fire cover (i.e. the straight injection fire cover 6) can also form dense small fires, solving the phenomenon that the top of the stir-frying burner has no fire when the central stir-frying fire is not started, resulting in low temperature of the pot bottom.

[0047] Specifically, the upper air chamber 52 is concaved on the top of the fire cap body 5 and opens upward, the upper air chamber 52 is communicated with the outer ring air chamber 51 and the direct injection air chamber 53 respectively, and the direct injection fire cap 6 covers the upper air chamber 52 and the direct injection air chamber 53 respectively, so that the dense small fire is formed on the top of the middle ring fire cap in the form of a ring when the gas stove is not started to stir-fry, and the gas in the direct injection air chamber 53 flows to the upper air chamber 52 when the top fire hole directly above the direct injection air chamber 53 is blocked, preventing the gas from flowing back to the inside of the gas stove from the direct injection injector 14 and causing danger.

[0048] Embodiment 3

[0049] Reference Figures 5-8 The difference between the embodiment and the embodiment 2 is that the gas stove further comprises a fire divider 3, and the fire divider 2 is arranged between the burner structure 1 and the fire cap structure. The fire divider 2 is provided with coaxially arranged outer ring air chamber 21, middle ring air chamber 22 and direct injection air chamber 23, the middle ring air chamber 22 is arranged between the outer ring air chamber 21 and the direct injection air chamber 23, the gas inlet 211 is arranged at the bottom of the outer ring air chamber 21 corresponding to the position of the outer mixed gas chamber 111, the outer ring air chamber 21 is communicated with the outer mixed gas chamber 111 through the gas inlet 211, the middle ring air chamber 22 is communicated with the middle mixed gas chamber 112, and the direct injection air chamber 23 is communicated with the direct injection mixed gas chamber 113. The outer ring air chamber 41 of the outer ring fire cap 4 is communicated with the upper end of the outer ring air chamber 21, and the middle ring fire cap is communicated with the middle ring air chamber 22 and the direct injection air chamber 23, that is, the middle ring air chamber 51 of the middle ring fire cap is communicated with the upper end of the middle ring air chamber 22, and the direct injection air chamber 52 of the middle ring fire cap is communicated with the upper end of the direct injection air chamber 23. In addition, the fire divider 2 is further provided with a secondary air passage 24, the secondary air passage 24 is arranged between the middle ring air chamber 22 and the outer ring air chamber 21, and is used for providing the secondary air required for combustion for the middle ring fire.

[0050] Reference Figures 6-7 Further, the gas stove further comprises a flow baffle 3, the flow baffle 3 is arranged above the gas inlet 211 and is connected with the fire divider 2 or the outer ring fire cap 4, a plurality of air equalizing holes 31 are arranged on the flow baffle 3, so that the phenomenon of uneven flame caused by too fast local flow velocity when the outer ring gas is injected from the side of the fire divider is improved.

[0051] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A stopcock valve characterised in that, include: The valve body assembly includes 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 at intervals in the same direction. The main air inlet (711) is selectively connected to the outer ring air outlet (712) and / or the air supply channel. The middle ring air passage (722) and the stir-fry air passage (723) are respectively connected to the air supply channel. A 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).

2. A faucet valve according to claim 1, characterized in that The valve body assembly includes: The plug valve body (71) is provided with the main air inlet (711), the outer ring air outlet (712) and the middle ring air outlet (713), and the outer ring air outlet (712) and the middle ring air outlet (713) are arranged side by side in the same direction at intervals; The stir-fry valve body (72) is detachably connected to the stopcock valve body (71). The stir-fry valve body (72) is provided with a central ring air inlet channel (721), a central ring air passage (722), and a stir-fry air passage (723). The central ring air inlet channel (721) is connected to the central ring air outlet (713) to form the air supply channel.

3. A faucet valve according to claim 2, wherein The central axes of the outer ring air outlet (712) and the middle ring air outlet (713) are located on the same plane.

4. A tap according to any one of claims 1 to 3, wherein It also includes a valve core assembly (73), and the valve body assembly is further provided with an upwardly opening valve cavity (710). The valve core assembly (73) is movably disposed in the valve cavity (710) for controlling the communication state between the main air inlet (711) and the outer ring air outlet (712) and / or the air supply channel.

5. A faucet valve according to claim 4, wherein An annular groove (714) is recessed at the lower end of the cavity wall of the valve cavity (710). An air outlet channel (715) is provided on the valve body assembly and is arranged obliquely upward. The lower end of the air outlet channel (715) is connected to the annular groove (714), and the higher end is connected to the air supply channel.

6. A gas hob, characterized in that include: The burner head structure (1) is provided with an upward-opening outer mixing chamber (111), a middle mixing chamber (112) and a direct injection mixing chamber (113). The outer mixing chamber (111) is located outside the middle mixing chamber (112), and the direct injection mixing chamber (113) is located inside the middle mixing chamber (112). The flame cap structure includes an outer ring flame cap (4) and a middle ring flame cap. The outer ring flame cap (4) is disposed on the top of the outer mixing chamber (111), and the middle ring flame cap is disposed on the top of the middle mixing chamber (112) and the top of the direct injection mixing chamber (113), respectively. According to any one of claims 1-5, the outer ring air outlet (712) is connected to the outer mixing chamber (111), the middle ring air passage (722) is connected to the middle mixing chamber (112), and the stir-fry air passage (723) is connected to the direct injection mixing chamber (113).

7. A gas hob according to claim 6, characterized in that The gas connection channel (1141) extends outwardly from one end of the furnace head structure (1) to the outside wall of the furnace head structure (1) and is in communication with the stir-frying gas channel (723), and extends inwardly into the middle mixing gas cavity (112) from the other end and is in communication with the direct injection mixing gas cavity (113).

8. A gas hob according to claim 6, characterized in that The middle ring fire cover includes a fire cover body (5) and a direct injection fire cover (6), the fire cover body (5) is provided with a middle ring gas chamber (51), a direct injection gas chamber (53) and a main fire hole group, the main fire hole group is connected with the middle mixing gas cavity (112) through the middle ring gas chamber (51), and the lower end of the direct injection gas chamber (53) is in communication with the direct injection mixing gas cavity (113); the direct injection fire cover (6) is installed on the top of the fire cover body (5), and the direct injection fire cover (6) is only in communication with the direct injection gas chamber (53), or the direct injection fire cover (6) is in communication with the middle ring gas chamber (51) and the direct injection gas chamber (53) respectively.

9. A gas hob according to any one of claims 6 to 8, characterised in that, The device further comprises a fire distributor (2) arranged between the furnace head structure (1) and the fire cover structure, the fire distributor (2) is provided with an outer ring gas cavity (21), a middle ring gas cavity (22) and a direct injection gas cavity (23), the middle ring gas cavity (22) is arranged between the outer ring gas cavity (21) and the direct injection gas cavity (23), a gas inlet (211) is arranged at the bottom of the outer ring gas cavity (21), the outer ring gas cavity (21) is in communication with the outer mixing gas cavity (111) through the gas inlet (211), the middle ring gas cavity (22) is connected with the middle mixing gas cavity (112), and the direct injection gas cavity (23) is in communication with the direct injection mixing gas cavity (113). The outer ring fire cover (4) is in communication with the outer ring gas cavity (21), and the middle ring fire cover is in communication with the middle ring gas cavity (22) and the direct injection gas cavity (23) respectively.

10. A gas hob according to claim 9, characterized in that The device further comprises a flow baffle (3) arranged above the gas inlet (211) and connected with the fire distributor (2) or the outer ring fire cover (4), and a plurality of gas equalizing holes (31) are arranged on the flow baffle (3).

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