Gas path system of cooking equipment and cooking equipment

Abstract

The invention provides a gas path system of cooking equipment and the cooking equipment. The gas path system comprises an inner container, a pressurization gas inlet mechanism and a pressure relief exhaust mechanism. The pressurizing air inlet mechanism comprises a fan, a rotating shaft and a pressurizing air inlet pipe; the rotating shaft is provided with stirring blades and a turbine; the pressurizing air inlet pipe is connected with the side wall of the inner container; the slow pressure exhaust mechanism comprises a box body, a slow pressure exhaust pipe and a waste gas pipe; an air inlet connector and an air outlet connector are formed in the bottom of the box body; one end of the pressure relief exhaust pipe is connected with the inner container, and the other end of the pressure relief exhaust pipe is connected with the air inlet connector; the waste gas pipe is connected with the exhaust connector; a buffer baffle is arranged in the box body in the direction from the air inlet connector to the air outlet connector. Steam and oil smoke in the inner container can be rapidly discharged, the structure is simple, the manufacturing cost is low, the assembling efficiency is high, and the problem that condensate water and steam are sputtered at an outlet of the waste gas pipe can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a gas path system of a cooking device and the cooking device. Background Art

[0002] Existing cooking equipment, such as steamers, ovens, integrated stoves or stove steamers, use an additional fan system to quickly exhaust the residual steam and fumes from cooking in the inner pot of the cooking equipment, which results in excessive redundancy of parts, increases manufacturing costs, and reduces assembly efficiency. In addition, during cooking, if the user slams the door or the temperature in the inner pot of the cooking equipment rises too quickly, the pressure in the inner pot of the cooking equipment will increase sharply, and condensed water and steam will splash out at the outlet of the exhaust pipe.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide an air path system for cooking equipment, which can quickly discharge steam and oil smoke in an inner pot, has a simple structure, low manufacturing cost, and high assembly efficiency. It can also solve the problem of splashing condensed water and steam at the outlet of the exhaust pipe due to a sudden increase in pressure in the inner pot of the cooking equipment.

[0005] Another object of the present invention is to provide a cooking device, which includes the gas path system of the above-mentioned cooking device, which can quickly discharge the steam and oil smoke in the inner pot, has a simple structure, low manufacturing cost, and high assembly efficiency. It can also solve the problem of splashing condensed water and steam at the outlet of the exhaust pipe due to the sudden increase in pressure in the inner pot of the cooking device.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An air path system of a cooking device, comprising an inner pot and a pressurized air intake mechanism and a slow-pressure exhaust mechanism connected to the inner pot;

[0008] The pressurized air intake mechanism comprises a fan, a rotating shaft and a pressurized air intake pipe; the fan is located outside the inner container and connected to one end of the rotating shaft; the rotating shaft is passed through the side wall of the inner container, and one end of the rotating shaft located inside the inner container is provided with a stirring blade; the rotating shaft is also provided with a turbine, and the turbine is located between the stirring blade and the side wall of the inner container; one end of the pressurized air intake pipe is connected to the side wall of the inner container at a position corresponding to the turbine, and the pressurized air intake pipe is provided with a solenoid valve;

[0009] The pressure-relief exhaust mechanism includes a box body, a pressure-relief exhaust pipe and an exhaust pipe; an air inlet connection port is provided at the bottom of one end of the box body, and an exhaust connection port is provided at the top of the other end of the box body; one end of the pressure-relief exhaust pipe is connected to the inner tank, and the other end of the pressure-relief exhaust pipe is connected to the air inlet connection port; the exhaust pipe is connected to the exhaust connection port; buffer baffles are staggeredly arranged in the box body along the direction from the air inlet connection port to the exhaust connection port.

[0010] According to one embodiment of the present invention, the side wall of the inner tank protrudes outward to form a turbine chamber, and the turbine is located in the turbine chamber; a turbine air inlet is provided on the outer side of the turbine chamber, and the turbine air inlet is connected to an air inlet cover, and the side of the air inlet cover is connected to the boost intake pipe.

[0011] According to one embodiment of the present invention, a first positioning hole is provided in the middle of the stirring blade, and a second positioning hole is provided in the middle of the turbine; a first positioning protrusion corresponding to the first positioning hole and a second positioning protrusion corresponding to the second positioning hole are provided on the rotating shaft.

[0012] According to one embodiment of the present invention, a partition plate is provided in the box body, and the partition plate divides the box body into a first area and a second area; the air intake connection port, the exhaust connection port and the buffer baffle are arranged in the first area, the end of the boost air intake pipe is connected to the second area, and the side wall of the second area is provided with a boost air intake hole.

[0013] According to one embodiment of the present invention, the bottom of the first zone is a slope, and the height of the slope gradually increases along the direction from the air inlet connection port to the exhaust connection port.

[0014] According to one embodiment of the present invention, a valve device is provided in the air inlet connection port; the valve device comprises a shell and a pressure relief assembly provided in the shell; the shell is provided with an air inlet and an air outlet;

[0015] The pressure relief assembly includes a main body and an adjustment plate arranged in the main body; the main body is cylindrical, the top end of the main body is closed, the bottom end of the main body is connected to the air inlet, and the top of the side wall of the main body is provided with a ventilation slot; the inner wall of the bottom end of the main body extends inwardly to provide a limit plate, and the top of the main body extends downward to provide a guide rod; the adjustment plate includes a slide plate corresponding to the cross-section of the main body, the edge of the slide plate extends upward to provide a baffle corresponding to the shape of the ventilation slot, and the edge of the slide plate is also provided with a notch; a guide hole is provided in the middle of the slide plate, and the slide plate is sleeved on the outer periphery of the guide rod through the guide hole and slides between a first position and a second position; a spring is provided between the slide plate and the top of the main body, so that the slide plate is against the limit plate when it is in the first position; when the slide plate slides upward from the first position to the second position, the area of ​​the ventilation slot blocked by the baffle gradually increases.

[0016] According to one embodiment of the present invention, a pad is provided on the limiting plate, so that the slide plate contacts the pad when located at the first position, and an air intake space is formed between the slide plate and the limiting plate, and an air outlet is provided on the side wall of the air intake space.

[0017] According to one embodiment of the present invention, an S-shaped guide groove is provided on the outer periphery of the guide rod, and the guide groove extends along the axial direction of the guide rod; a guide slider is provided on the inner wall of the guide hole, and the guide slider is located in the guide groove; when the slide plate is located at the first position, the baffle plate and the ventilation slot are offset.

[0018] According to one embodiment of the present invention, a cylindrical guide sleeve is extended upwardly from the outer circumference of the guide hole, and the inner diameter of the guide sleeve corresponds to the outer diameter of the guide rod.

[0019] According to one embodiment of the present invention, a valve device is provided in the air intake connection port; the valve device comprises a valve cylinder and a driver; a valve hole is provided on the side wall of the valve cylinder;

[0020] The driver is an electric push rod, and a piston is arranged in the valve barrel, and the piston is connected to the electric push rod, so that the piston can move axially along the valve barrel and block or partially block the valve hole;

[0021] Alternatively, the driver is a driving motor, and a sealing block is provided at a position in the valve barrel corresponding to the valve hole, and the cross-section of the sealing block is semicircular; the sealing block is connected to the output shaft of the driving motor so that the sealing block can rotate around the axis of the valve barrel and seal or partially seal the valve hole.

[0022] The present invention also provides a cooking device, comprising the gas path system of the cooking device mentioned above.

[0023] According to one embodiment of the present invention, an inner wall of the inner tank is provided with an air guide cover, and the air guide cover covers the stirring blades and the turbine; the air guide cover is provided with air guide holes.

[0024] According to one embodiment of the present invention, the cooking equipment also includes a fixed panel and an external steam exhaust terminal assembly; the external steam exhaust terminal assembly includes an exhaust port seat and a locking nut; the exhaust port seat includes a cylindrical body, and a clamping plate extending outward is provided on the top of the body; an external thread is provided on the outer periphery of the body; the locking nut is connected to the body by threads, and a locking plate extending outward is provided on the top of the locking nut, a locking space is formed between the locking plate and the clamping plate, and the fixed panel is located in the locking space; the bottom end of the body is connected to the exhaust pipe.

[0025] According to one embodiment of the present invention, a first annular baffle is extended inwardly from the inner wall of the cylinder, a plurality of ribs extending downward or upward are provided at intervals on the inner side of the first baffle, a second baffle is provided at the end of the rib, and the second baffle is fixedly connected to the end of the rib.

[0026] According to one embodiment of the present invention, a detachable cover is provided on the top of the card plate, and a vent hole is provided on the cover.

[0027] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0028] The gas path system of the cooking device and the cooking device provided in the embodiment of the present invention can quickly discharge the steam and oil smoke in the inner pot, have a simple structure, low manufacturing cost, and high assembly efficiency, and can also solve the problem of splashing condensed water and steam at the outlet of the exhaust pipe due to the sudden increase in pressure in the inner pot of the cooking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0030] Figure 1 A schematic diagram of the structure of the gas circuit system of a cooking device provided in an embodiment of the present invention;

[0031] Figure 2 A schematic structural diagram of the gas path system of a cooking device provided by an embodiment of the present invention from another angle;

[0032] Figure 3 A schematic structural diagram of the gas circuit system of the cooking device provided by the embodiment of the present invention from another angle;

[0033] Figure 4A schematic diagram of the structure of the gas path system of the cooking device provided by the embodiment of the present invention without the inner pot;

[0034] Figure 5 A side view of a gas circuit system of a cooking device provided by an embodiment of the present invention without an inner pot;

[0035] Figure 6 A schematic diagram of the air intake principle of a pressurized air intake mechanism of an air circuit system of a cooking device provided in an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the assembly of a pressurized air intake mechanism of an air circuit system of a cooking device provided in an embodiment of the present invention;

[0037] Figure 8 A schematic structural diagram of a box of a gas circuit system of a cooking device provided in an embodiment of the present invention;

[0038] Fig. 9 A schematic diagram of the structure of a valve device of an air circuit system of a cooking device provided by an embodiment of the present invention;

[0039] Fig.10 A schematic structural diagram of a valve device of an air path system of a cooking device provided by another embodiment of the present invention;

[0040] Fig.11 A schematic diagram of the structure of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention;

[0041] Fig.12 A cross-sectional view of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention;

[0042] Fig.13 A schematic diagram of the assembly of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention;

[0043] Fig.14 A schematic structural diagram of a pressure relief component of a valve device of an air path system of a cooking device provided by another embodiment of the present invention when the pressure relief component has a maximum ventilation area;

[0044] Fig.15 yes Fig.14 Sectional view in the AA direction;

[0045] Fig.16 A schematic structural diagram of a pressure relief component of a valve device of an air path system of a cooking device provided by another embodiment of the present invention when the pressure relief component has a minimum ventilation area;

[0046] Fig.17 yes Fig.16 Cross-sectional view in the BB direction;

[0047] Fig.18 A schematic structural diagram of a valve seat of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention;

[0048] Fig.19 A schematic structural diagram of a valve seat of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention from another angle;

[0049] Fig. 20 A schematic structural diagram of a valve cover of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention;

[0050] Fig.21 A schematic structural diagram of a valve cover of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention from another angle;

[0051] Fig. 22 A schematic structural diagram of an adjustment plate of an air valve device of an air path system of a cooking device provided by another embodiment of the present invention;

[0052] Fig.23 A schematic structural diagram of another angle of an adjustment plate of a valve device of an air path system of a cooking device provided by another embodiment of the present invention;

[0053] Fig.24 A front view of a gasket of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention;

[0054] Fig.25 A top view of a gasket of a valve device of an air circuit system of a cooking device provided by another embodiment of the present invention;

[0055] Fig.26 A schematic diagram of the structure of a cooking device provided by an embodiment of the present invention;

[0056] Fig. 27 A schematic structural diagram of an air guide cover of a cooking device provided by an embodiment of the present invention;

[0057] Fig.28 A schematic diagram of the assembly of an air guide cover of a cooking device provided by an embodiment of the present invention;

[0058] Fig.29 A schematic diagram of the structure of an external steam exhaust terminal assembly of a cooking device provided in an embodiment of the present invention;

[0059] Fig.30 A schematic structural diagram of another angle of the external steam exhaust terminal assembly of the cooking device provided by an embodiment of the present invention;

[0060] Fig.31 A schematic diagram of the assembly of an external steam exhaust terminal assembly of a cooking device provided in an embodiment of the present invention;

[0061] Fig.32 A three-dimensional diagram of the installation structure of the external steam exhaust terminal assembly of the cooking device provided by the embodiment of the present invention;

[0062] Fig.33 A cross-sectional view of the installation structure of the external steam exhaust terminal assembly of the cooking device provided by the embodiment of the present invention;

[0063] Fig.34 A schematic diagram of the structure of an exhaust port seat of an external steam exhaust terminal assembly of a cooking device provided in an embodiment of the present invention;

[0064] Fig.35 A schematic structural diagram of another angle of the exhaust port seat of the external steam exhaust terminal assembly of the cooking device provided by the embodiment of the present invention;

[0065] Fig.36 A cross-sectional schematic diagram of an exhaust port seat of an external steam exhaust terminal assembly of a cooking device provided in an embodiment of the present invention;

[0066] Fig.37 A schematic structural diagram of a locking nut of an external steam exhaust terminal assembly of a cooking device provided in an embodiment of the present invention;

[0067] Fig.38 A schematic structural diagram of a cover plate of an external steam exhaust terminal assembly of a cooking device provided in an embodiment of the present invention.

[0068] Description of reference numerals:

[0069] 1. Shell; 11. Air inlet; 12. Exhaust port; 13. Upper shell; 14. Lower shell; 2. Pressure relief assembly; 21. Main body; 211. Ventilation notch; 212. Stop plate; 213. Guide rod; 2131. Guide groove; 21311. First groove; 21312. Second groove; 214. Pad; 215. Air inlet space; 216. Exhaust hole; 217. Valve seat; 2171. Seat body; 2172. Connecting tube; 2173. Connecting hole; 218. Valve cover; 2181. Connecting rod; 22. Adjustment plate; 221, slide plate; 2211, guide hole; 2212, guide slider; 2213, guide sleeve; 222, baffle; 223, notch; 23, spring; 24, gasket; 241, raised portion; 3, liner; 31, turbine chamber; 32, air inlet cover; 33, air guide cover; 4, pressurized air intake mechanism; 41, fan; 42, shaft; 421, first positioning protrusion; 422, second positioning protrusion; 423, first limiting protrusion; 424, first positioning member; 425, second limiting protrusion; 426, second positioning member Positioning parts; 43, supercharged air intake pipe; 44, stirring blade; 441, first positioning hole; 45, turbine; 451, second positioning hole; 46, solenoid valve; 5, slow-pressure exhaust mechanism; 51, box; 511, first zone; 512, second zone; 52, slow-pressure exhaust pipe; 53, exhaust pipe; 54, air intake connection port; 55, exhaust connection port; 56, buffer baffle; 57, partition plate; 58, supercharged air intake hole; 6, valve cylinder; 61, driver; 62, valve hole; 63, piston; 64, blocking block; 1', exhaust Air port seat; 11', cylinder; 111', external thread; 12', clamping plate; 121', mounting edge; 122', water stop edge; 123', positioning edge; 13', first baffle; 14', rib plate; 15', second baffle; 16', connecting tube; 17', operating hole; 2', locking nut; 21', locking plate; 22', groove; 3', locking space; 4', fixing panel; 41', mounting hole; 6', cover plate; 61', vent hole; 62', mounting protrusion; 63', decorative hole; 7', sealing ring. DETAILED DESCRIPTION

[0070] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention encompasses such modifications and variations within the scope of the appended claims and their equivalents.

[0071] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0072] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides an air path system of a cooking device, including an inner pot 3 and a pressurized air intake mechanism 4 and a slow-pressure exhaust mechanism 5 connected to the inner pot 3. The pressurized air intake mechanism 4 includes a fan 41, a rotating shaft 42 and a pressurized air intake pipe 43. The fan 41 is located outside the inner pot 3 and is connected to one end of the rotating shaft 42. The rotating shaft 42 passes through the side wall of the inner pot 3, and a stirring blade 44 is provided at one end of the rotating shaft 42 located inside the inner pot 3. A turbine 45 is also provided on the rotating shaft 42, and the turbine 45 is located between the stirring blade 44 and the side wall of the inner pot 3. One end of the pressurized air intake pipe 43 is connected to the side wall of the inner pot 3 corresponding to the position of the turbine 45, refer to Figure 5 , Figure 6 , Figure 8 , a solenoid valve 46 is provided at the end of the boost intake pipe 43. The slow-pressure exhaust mechanism 5 includes a box body 51, a slow-pressure exhaust pipe 52 and an exhaust pipe 53. An intake connection port 54 is provided at the bottom of one end of the box body 51, and an exhaust connection port 55 is provided at the top of the other end of the box body 51. One end of the slow-pressure exhaust pipe 52 is connected to the inner tank 3, and the other end of the slow-pressure exhaust pipe 52 is connected to the intake connection port 54. The exhaust pipe 53 is connected to the exhaust connection port 55. Reference Figure 8 Buffer baffles 56 are staggeredly arranged in the box body 51 along the direction from the air inlet connection port 54 to the air outlet connection port 55.

[0073] like Figure 4-Figure 6As shown, when the air path system of the cooking device provided by the embodiment of the present invention is in operation, the stirring blade 44 rotates, and the airflow in the middle of the inner pot 3 of the cooking device is sucked in from the middle of the stirring blade 44 and diffused to the surroundings, and evenly spread in the inner pot 3, so as to achieve uniform heating of the food in the inner pot 3. The turbine 45 rotates with the stirring blade 44. On the side of the turbine facing the fan 41, area A is the air compression area, and area B is the air release area, and the air flow direction is A→B. After the air in area A is compressed and transmitted to area B, low pressure will appear near area A. If a large amount of air needs to be injected into the inner pot 3 to exhaust the steam and / or oil smoke inside it, the solenoid valve 46 connected to the boost air intake pipe 43 is opened, and the air enters the inner pot 3 through the boost air intake pipe 43 (such as Figure 4 Downward arrow and Figure 6 The inner pot 3 is filled with a large amount of air. If the inner pot 3 does not need to be filled with air, the electromagnetic valve 46 connected to the boost air intake pipe 43 is closed, and the air cannot enter the inner pot 3 through the boost air intake pipe 43. Then, an air vortex will appear in the vicinity of the turbine 45, which can promote the heat exchange cycle in the inner pot 3 and achieve uniform heating of the food in the inner pot 3 more quickly. The boost air intake mechanism 4 can blow air into the inner pot 3 of the cooking device in a turbocharged manner to quickly discharge the remaining steam and oil smoke, so as to solve the problem that steam and / or oil smoke accumulate in the inner pot 3 after cooking, and the user opens the door to face the steam and / or the oil smoke accumulates in the inner pot 3 and is difficult to be discharged quickly. The turbine 45 is coaxially installed with the stirring blade 44 to share the fan 41, and there is no need to add a separate fan system, so that the entire system structure is simple, the manufacturing cost is low, and the assembly efficiency is high. At the end of cooking or after the cooking is finished, a large amount of heat accumulates in the electrical component area on the top of the cooking device. If the heat is not discharged in time, it will have a negative impact on the service life of the electrical components. The pressurized air intake mechanism 4 can extract hot air from the electrical component area and inject it into the inner pot 3, thereby accelerating the heat dissipation of the electrical component area and extending the service life of the electrical components. During cooking, if the user slams the door or the temperature of the cooking device inner pot 3 rises too quickly, the pressure in the cooking device inner pot 3 will increase sharply. When the high-pressure gas in the inner pot 3 flows into the box body 51 through the slow-pressure exhaust pipe 52 (such as Figure 4 As shown by the upward arrow in the figure, due to the obstruction of multiple buffer baffles 56, the gas pressure and flow rate at the outlet of the exhaust pipe 53 can be reduced, solving the problem of splashing condensed water and steam at the outlet of the exhaust pipe 53.

[0074] like Figure 1 , Figure 2 , Figure 6As shown, in one embodiment of the present invention, the side wall of the inner liner 3 protrudes outward to form a turbine chamber 31, and the turbine 45 is located in the turbine chamber 31. The outer side of the turbine chamber 31 is provided with a turbine air inlet, and the turbine air inlet is connected to an air inlet hood 32, and the air inlet hood 32 is connected to the boost air inlet pipe 43 on the side. The turbine chamber 31 can promote the turbine 45 to boost pressure into the inner liner 3, and the air inlet hood 32 is used to guide the air flow into the inner liner 3. After the solenoid valve 46 is opened, the inside of the air inlet hood 32 is connected to the atmosphere. Due to the operation of the fan 41, the A area of ​​the turbine 45 will compress the air and transfer it to the B area, and then transfer it to the inner liner 3, thereby increasing the air pressure in the inner liner 3, and quickly discharging the steam and oil fume through the slow pressure exhaust mechanism 5. After the solenoid valve 46 works for a period of time, it is closed, and the oil fume and steam remaining in the inner liner 3 will be greatly reduced, avoiding the situation where the user opens the door and the oil fume and / or steam blows in the face, and the odor in the inner liner 3 can be quickly discharged.

[0075] In order to prevent the stirring blade 44 and the rotating shaft 42, and the turbine 45 and the rotating shaft 42 from rotating relative to each other, thereby affecting the rotation of the stirring blade 44 and the turbine 45, as shown in FIG. Figure 7 As shown, in one embodiment of the present invention, a first positioning hole 441 is provided in the middle of the stirring blade 44, a second positioning hole 451 is provided in the middle of the turbine 45, and a first positioning protrusion 421 corresponding to the first positioning hole 441 and a second positioning protrusion 422 corresponding to the second positioning hole 451 are provided on the rotating shaft 42. In this embodiment, the cross section of the first positioning protrusion 421 is semicircular, and the cross section of the second positioning protrusion 422 is cross-shaped. Further, in order to limit the positions of both sides of the stirring blade 44 and the turbine 45 to prevent them from moving along the axial direction of the rotating shaft 42, the first positioning protrusion 421 is provided with a first limiting protrusion 423 at one end facing the second positioning protrusion 422, and a first positioning member 424 is provided at the other end, and the cross-sectional shape of the first limiting protrusion 423 corresponds to the cross-sectional shape of the second positioning hole 451, so as to facilitate the installation of the turbine 45. The second positioning protrusion 422 is provided with a second limiting protrusion 425 at one end facing the fan 41, and a second positioning member 426 at the other end. In this embodiment, the first positioning member 424 is a nut, and the second positioning member 426 is a C-shaped buckle.

[0076] like Figure 8As shown, in one embodiment of the present invention, a partition plate 57 is provided in the box body 51, and the partition plate 57 divides the box body 51 into a first area 511 and a second area 512. The air inlet connection port 54, the air exhaust connection port 55 and the buffer baffle 56 are provided in the first area 511, the end of the boost air intake pipe 43 is connected to the second area 512, and the side wall of the second area 512 is provided with a boost air intake hole 58. The first area 511 is used for buffering exhaust, and the second area 512 is used for air to enter the boost air intake pipe 43 to flow into the inner pot 3. Further, the solenoid valve 46 is provided in the second area 512, and when the boost air intake mechanism 4 needs air flow to enter, the solenoid valve 46 is opened, and the hot air above the electrical components enters the boost air intake pipe 43 through the boost air intake hole 58 and is compressed into the inner pot 3; when the boost air intake mechanism 4 does not need air flow to enter, the solenoid valve 46 is closed to prevent the outside from affecting the cooking effect. Furthermore, the bottom of the first zone 511 is an inclined surface, and the height of the inclined surface gradually increases along the direction from the air inlet connection port 54 to the exhaust connection port 55. Steam and oil smoke flow into the box body 51 through the air inlet connection port 54, and flow upward along the inclined surface. In this process, the kinetic energy will be consumed by the inclined surface and the buffer baffle 56 on the inclined surface to further reduce the negative impact of the sudden change in air pressure. Finally, it flows into the exhaust pipe 53 through the exhaust connection port 55 and is discharged to the outside. Since the sudden increase in air pressure is alleviated, the gas pressure and flow rate at the outlet of the exhaust pipe 53 can be reduced, and the problem of splashing condensed water and steam at the outlet of the exhaust pipe 53 can be solved.

[0077] In order to further reduce the gas pressure and flow rate at the outlet of the exhaust pipe 53, a valve device is provided in the air inlet connection port 54. The valve device can automatically adjust the air outlet area, and reduce the ventilation area when the air pressure in the inner tank 3 is high, thereby ensuring smooth air pressure and air flow at the exhaust connection port 55, reducing the gas pressure and flow rate at the outlet of the exhaust pipe 53, and solving the problem of splashing condensed water and steam at the outlet of the exhaust pipe 53.

[0078] like Fig. 9 , Fig.10As shown, in one embodiment of the present invention, the valve device includes a valve barrel 6 and a driver 61, and a valve hole 62 is provided on the side wall of the valve barrel 6. One end of the valve barrel 6 is open, and the other end is connected to the driver 61 and blocked by the driver 61. The driver 61 can be an electric push rod or a drive motor. When the driver 61 is an electric push rod, a piston 63 is provided in the valve barrel 5, and the piston 63 is connected to the electric push rod so that the piston 63 can move axially along the valve barrel 6 and block or partially block the valve hole 62. When the driver 61 is a drive motor, a blocking block 64 is provided at a position corresponding to the valve hole 62 in the valve barrel 6, and the cross section of the blocking block 64 is semicircular. The blocking block 64 is connected to the output shaft of the drive motor so that the blocking block 64 can rotate around the axis of the valve barrel 6 and block or partially block the valve hole 62. The use of a drive motor or an electric push rod also requires some necessary electronic control components and control logic: when the oven door control switch (used to identify whether the oven door is open) feeds back a door closing signal (or when the air pressure sensor provided in the inner pot 3 identifies an increase in air pressure, or when the solenoid valve 46 of the pressurized air intake pipe 43 feeds back an opening signal), the electric push rod or the drive motor starts to move and reduce the ventilation area of ​​the valve cylinder 6. Under normal circumstances, the electric push rod or the drive motor controls the valve hole 62 to open and close to an appropriate position.

[0079] In another embodiment of the present invention, Figure 11-13 As shown, the valve device includes a shell 1 and a pressure relief assembly 2 arranged in the shell 1. The shell 1 is provided with an air inlet 11 and an air outlet 12, and the air inlet 11 is connected to the air inlet connection port 54. The pressure relief assembly 2 includes a main body 21 and an adjustment plate 22 arranged in the main body 21. The main body 21 is tubular, for example, cylindrical. The top end of the main body 21 is closed, the bottom end of the main body 21 is connected to the air inlet 11, and the top of the side wall of the main body 21 is provided with a ventilation slot 211. A limit plate 212 is extended inwardly from the inner wall of the bottom end of the main body 21, and a guide rod 213 is extended downward from the top end of the main body 21. As shown Fig. 22 , Fig.23 As shown, the adjustment plate 22 includes a slide plate 221 corresponding to the cross section of the body 21, and a baffle plate 222 corresponding to the shape of the vent slot 211 is extended upward from the edge of the slide plate 221, and a notch 223 is also provided on the edge of the slide plate 221. A guide hole 2211 is provided in the middle of the slide plate 221, and the slide plate 221 is sleeved on the outer periphery of the guide rod 213 through the guide hole 2211, and slides between a first position and a second position. A spring 23 is provided between the slide plate 221 and the top of the body 21, so that the slide plate 221 is against the limit plate 212 when in the first position. When the slide plate 221 slides upward from the first position to the second position, the area of ​​the vent slot 211 blocked by the baffle plate 222 gradually increases.

[0080] When the valve device of this embodiment is in use, the air inlet 11 is connected to the air inlet connection port 54, and the exhaust port 12 is located in the box body 51. The pressure P1 generated by the spring 23 acting on the slide plate 221 of the adjustment plate 22 confronts the air pressure P2 in the inner pot 3 of the cooking device. When (P2>P1+atmospheric pressure+pressure generated by the gravity of the adjustment plate), the adjustment plate 22 rises, the ventilation area decreases, the spring 23 is compressed, and the spring pressure on the adjustment plate 22 increases. Conversely, the adjustment plate 22 descends to the lowest point on the limit plate 212, the ventilation area increases, and the spring pressure on the adjustment plate 22 decreases. Specifically, if Fig.14 , Fig.15 As shown, when the pressure in the inner pot 3 of the cooking device is equal to or slightly higher than the atmospheric pressure, the slide plate 221 of the adjustment plate 22 contacts or approaches the limit plate 212. At this time, the baffle 222 of the adjustment plate 22 does not cover the vent slot 211 at all or slightly covers the vent slot 211. For example, the baffle 222 is completely or partially located below the vent slot 211. At this time, the gas in the inner pot 3 of the cooking device enters the bottom of the main body 21 from the air inlet 11 through the pressure relief exhaust pipe 52, and flows from the notch 223 on the edge of the slide plate 221 to the inside of the adjustment plate 22, and flows from the vent slot 211 of the main body 21 into the shell 1, and finally flows out from the exhaust port 12 of the shell 1 into the box 51. When the adjustment plate 22 is located in the first position, the baffle 222 does not cover the vent slot 211 at all, and the ventilation area of ​​the pressure relief assembly 2 is the largest. As shown Fig.16 , Fig.17As shown, when the pressure in the inner pot 3 of the cooking device is higher than or much higher than the atmospheric pressure, the regulating plate 22 is acted upon by the gas pressure and slides upward along the guide rod 213. Finally, after the gas pressure is balanced, the slide plate 221 of the regulating plate 22 is close to or very close to the top of the body 21. At this time, the baffle 222 of the regulating plate 22 covers part or most of the area of ​​the ventilation slot 211. At this time, the gas in the inner pot 3 of the cooking device enters the bottom of the body 21 from the air inlet 11 through the pressure-reducing exhaust pipe 52, flows into the inside of the regulating plate 22 from the notch 223 at the edge of the slide plate 221, and flows into the inside of the shell 1 from the ventilation slot 211 of the body 21, and finally flows out from the exhaust port 12 of the shell 1 into the box 51. When the adjustment plate 22 is in the second position, the baffle 222 blocks most of the area of ​​the ventilation slot 211, the ventilation area of ​​the pressure relief assembly 2 is the smallest, and the high-pressure gas in the inner pot 3 of the cooking device will flow out quickly from the smallest ventilation area. The cross-sectional area of ​​the space from the top of the body 21 to the exhaust port 12 is larger than the cross-sectional area of ​​the air inlet 11, which can absorb the kinetic energy of the high-speed airflow, so that the gas pressure and flow rate at the exhaust port 12 increase in a slower form, further alleviating the problem of residual water or oil being splashed out at the end of the exhaust pipe 53 due to the sudden increase in air pressure. At the same time, it can solve the problem of large pressure attenuation in the inner pot 3 when the integrated stove or steaming and baking module of the steaming and baking device is running for cooking. As the air pressure in the space from the top of the main body 21 to the exhaust port 12 increases (basically equal to the pressure in the exhaust pipe 53), the adjustment plate 22 gradually descends toward the first position, and the ventilation area of ​​the pressure relief assembly 2 gradually increases, thereby making the exhaust smoother and stabilizing the air pressure in the exhaust pipe 53. This can solve the problem of additional noise caused by uneven air pressure vibration in the exhaust pipe 53 due to abnormal operation of the fan in the exhaust system of the integrated stove or range hood.

[0081] like Fig.12 , Fig.14 , Fig.16 , Fig.18 , Fig.19As shown, in order to ensure that the pressure relief assembly 2 has at least a certain ventilation area, ensure the smooth flow of gas, and prevent the pressure relief assembly 2 from completely blocking the body 21, in this embodiment, a cushion block 214 is provided on the limit plate 212, so that the slide plate 221 contacts the cushion block 214 when it is located at the first position, and an air intake space 215 is formed between the slide plate 221 and the limit plate 212, and the side wall of the air intake space 215 is provided with an air outlet 216. The air intake space 215 can ensure that the pressure relief assembly 2 has at least a certain ventilation area, and the gas from the inner pot 3 of the cooking device enters the bottom end of the body 21 through the air intake port 11 through the pressure relief exhaust pipe 52. Even if the adjustment plate 22 completely blocks the body 21, the gas can enter the shell 1 from the air intake space 215 and the air outlet 216, and then flow out from the exhaust port 12 of the shell 1 to the box 51. In addition, the cooperation between the cushion block 214 and the air outlet 216 can also return condensed water.

[0082] like Fig.12 , Fig.14 , Fig.16 , Fig. 20 , Fig.21 As shown, in order to prevent the adjustment plate 22 from rotating when sliding on the guide rod 213, which would cause the venting slot 211 to fail to block, in this embodiment, an S-shaped guide groove 2131 is provided on the outer periphery of the guide rod 213, and the guide groove 2131 extends along the axial direction of the guide rod 213. Fig. 22 , Fig.23 As shown, the inner wall of the guide hole 2211 is provided with a guide slider 2212, and the guide slider 2212 is located in the guide groove 2131. When the slide plate 221 is located at the first position, the baffle 222 is misaligned with the vent slot 211. In this embodiment, the guide groove 2131 can make the adjustment plate 22 rotate at a predetermined angle. When the slide plate 221 is located at the first position, the baffle 222 is misaligned with the vent slot 211 to ensure the maximum ventilation area; when the slide plate 221 slides upward from the first position to the second position, under the action of the guide groove 2131 and the guide slider 2212, the adjustment plate 22 drives the baffle 222 to rotate. During the rotation process, the baffle 222 gradually blocks the vent slot 211 to reduce the ventilation area. Due to the limitation of the guide groove 2131, the movement trajectory of the baffle 222 can be accurate to avoid accidental rotation.

[0083] like Fig. 20 , Fig.21As shown, in order to make the adjustment plate 22 more stable when rotating and sliding, in this embodiment, the number of the guide grooves 2131 is two, symmetrically arranged on both sides of the guide rod 213; accordingly, the number of the guide sliders 2212 is also two, respectively located on the inner walls of both sides of the guide hole 2211. Further, in order to make the slide plate 221 more stable when sliding, a cylindrical guide sleeve 2213 is extended upward from the outer circumference of the guide hole 2211, and the inner diameter of the guide sleeve 2213 corresponds to the outer diameter of the guide rod 213.

[0084] like Figure 18-Figure 21 As shown, in this embodiment, the number of the vent slots 211 is 4, evenly distributed on the periphery of the body 21. Correspondingly, the number of the baffles 222 is also 4, evenly distributed on the periphery of the slide plate 221, and the notch 223 is located between two adjacent baffles 222.

[0085] like Fig. 20 , Fig.21 As shown, in this embodiment, the guide groove 2131 includes two vertical first grooves 21311 and a second groove 21312 between the two first grooves 21311, the first groove 21311 extends axially along the guide rod 213, and the axes of the two first grooves 21311 do not overlap, but are staggered by a certain distance. In addition, the heights of the two first grooves 21311 are also different. The second groove 21312 is C-shaped, and the two ends are respectively connected to the two first grooves 21311. In this embodiment, the rotation angle of the baffle 222 needs to be (360°÷8=)45°, that is, the rotation angle range of the adjustment plate 22 is within the interval [0°, 45°]. Therefore, the staggered angle of the two first grooves 21311 of the guide groove 2131 is 45°, and the intersection positions of the first groove 21311 and the second groove 21312 correspond to the maximum and minimum ventilation areas respectively.

[0086] In order to make the force of the spring 23 on the adjustment plate 22 more uniform and ensure the stability of the adjustment plate 22 when sliding, Fig.12 , Fig.14 , Fig.16 As shown, in this embodiment, the bottom end of the spring 23 is provided with an annular gasket 24, and the gasket 24 abuts against the slide plate 221. Preferably, the bottom end of the gasket 24 is provided with a protrusion 241 to reduce the dynamic friction between the slide plate 221 and the gasket 24 during relative rotation. Preferably, the gasket 24 is a graphite gasket. Since graphite has a lubricating effect, the friction coefficient between the two is small, and in addition to point contact, the graphite gasket can reduce the friction force suffered by the adjustment plate 22 during movement.

[0087] In order to facilitate the assembly of the pressure relief assembly 2, as Fig.12 , Fig.13 , Figure 18-Figure 21 As shown, in this embodiment, the body 21 includes a valve seat 217 and a valve cover 218. The valve seat 217 includes a cylindrical seat body 2171, the inner wall of one end of the seat body 2171 is provided with the stop plate 212, and the other end of the seat body 2171 is detachably connected to the valve cover 218. The guide rod 213 is fixedly connected to the bottom of the valve cover 218. Further, the bottom of the seat body 2171 of the valve seat 217 is provided with a connecting cylinder 2172 extending downward, and the outer wall of the connecting cylinder 2172 is connected to the inner wall of the air inlet 11 by threads. In order to realize the detachable connection between the seat body 2171 and the valve cover 218, in this embodiment, vertical connecting rods 2181 are provided at both ends of the valve cover 218, and connecting holes 2173 corresponding to the connecting rods 2181 are provided at both ends of the valve seat 217. The connecting rod 2181 and the connecting hole 2173 can be connected by snaps or threads.

[0088] In order to facilitate the assembly of the valve device, Fig.11 , Fig.12 , Fig.13 As shown, the housing 1 comprises an upper shell 13 and a lower shell 14, wherein the bottom of the upper shell 13 and the top of the lower shell 14 are detachably connected, for example, by threaded connection. The air inlet 11 is arranged at the bottom of the lower shell 14, and the air outlet 12 is arranged at the top of the upper shell 13.

[0089] like Fig.26 As shown, the present invention also provides a cooking device, including the gas path system of the cooking device mentioned above. The cooking device can be an integrated stove, an integrated cooking center, a steam-bake machine, a steam box, an oven, a steam-oven, etc.

[0090] like Fig. 27 , Fig.28 As shown, in one embodiment of the present invention, the inner wall of the inner container 3 is provided with an air guide cover 33, the air guide cover 33 covers the stirring blade 44 and the turbine 45, and the air guide cover 33 is provided with air guide holes. The area between the air guide cover 33 and the side wall of the inner container 3 is called a hot air chamber, and the stirring blade 44 rotates in the hot air chamber, and cooperates with the air guide holes in all directions to guide the airflow to spread in the inner container 3 and even the temperature field.

[0091] In one embodiment of the present invention, the cooking device further comprises a fixed panel 4' and an external steam exhaust terminal assembly. Figure 29-Figure 31As shown, the external steam exhaust terminal assembly includes an exhaust port seat 1' and a locking nut 2'. The exhaust port seat 1' includes a cylindrical barrel 11', and a clamping plate 12' extending outward is provided on the top of the barrel 11'. An external thread 111' is provided on the outer periphery of the barrel 11'. The locking nut 2' is connected to the barrel 11' by threads, and a locking plate 21' extending outward is provided on the top of the locking nut 2', and a locking space 3' is formed between the locking plate 21' and the clamping plate 12', and the fixed panel 4' is located in the locking space 3'. The bottom end of the barrel 11' is connected to the exhaust pipe 53.

[0092] like Figure 32-Figure 33 As shown, when the external exhaust steam terminal assembly provided in this embodiment is installed and used, the cylinder 11' is arranged in the installation hole 41' on the fixed panel 4', and the fixed panel 4' can be a panel on the top of the cooking device or a stove panel of an integrated stove. The clamping plate 12' is against the top surface of the fixed panel 4', and the locking plate 21' is against the bottom surface of the fixed panel 4', and the fixed panel 4' is clamped in the locking space 3' to complete the installation. When in use, the bottom end of the cylinder 11' is connected to the exhaust pipe 53, and steam and other gases enter the cylinder 11' from the exhaust pipe 53 and are discharged from the top of the cylinder 11'. Compared with the existing steam exhaust device that needs to open a semi-waist-shaped groove behind the stove panel, the external exhaust steam terminal assembly provided in this embodiment has a simple structure, a small size, a low cost, a firm assembly, and does not affect the user experience. In addition, the fixed panel 4' matched with the external steam exhaust terminal assembly provided in this embodiment only needs to open a circular hole, which can be processed together with other openings during the production process of the fixed panel 4' (such as glass) without changing the machine tool, thereby improving production efficiency and cost.

[0093] In order to prevent the steam from carrying condensed water out of the top of the cylinder 11', dirtying the fixed panel 4' of the cooking device, and scalding the user with overheated steam, as shown in FIG. Figure 34-Figure 36 As shown, in this embodiment, the inner wall of the cylinder 11' is provided with an annular first baffle 13' extending inwardly, and the inner side of the first baffle 13' is provided with a plurality of ribs 14' extending downward or upward at intervals, and the end of the rib 14' is provided with a second baffle 15', and the second baffle 15' is fixedly connected to the end of the rib 14'. In this embodiment, a plurality of ribs 14' extend downward. A channel for gas to pass through is formed between two adjacent ribs 14', and the second baffle 15' can slow down the speed at which the gas is discharged upward, reduce the impact of the exhaust steam, and prevent the splashing of condensed water. In addition, the rib 14' and the second baffle 15' can also be used to prevent debris from falling into the cylinder 11' and blocking the exhaust pipe 53 below.

[0094] In order to further prevent the steam from carrying condensed water out of the top of the cylinder 11', the fixed panel 4' of the cooking device, and the overheated steam from scalding the user, such as Fig.29 , Figure 31-Figure 33 As shown, in this embodiment, a detachable cover plate 6' is provided on the top of the card plate 12', and the cover plate 6' covers the top of the cylinder 11', and a vent hole 61' is provided on the cover plate 6' for discharging steam and other gases. Fig.33 , Fig.38 As shown, in this embodiment, the outer end of the top surface of the card plate 12' is provided with an annular mounting ridge 121', and the inner side of the cover plate 6' is provided with a mounting protrusion 62', and the mounting protrusion 62' is clamped under the mounting ridge 121'. The buckle structure can facilitate the assembly and disassembly of the cover plate 6', and it is easier to clean the surface of the card plate 12'. Preferably, the number of the mounting protrusions 62' is multiple, and they are evenly spaced and distributed on the inner wall of the cover plate 6'.

[0095] In order to prevent condensed water from leaking onto the fixed panel 4' along the gap between the card plate 12' and the cover plate 6', as shown in FIG. Figure 33-Figure 35 As shown, in this embodiment, the inner side of the mounting edge 121' is provided with an annular water stop edge 122', and the water stop edge 122' abuts against the bottom surface of the cover plate 6'. In addition, the water stop edge 122' can also prevent steam from impacting the edge of the cover plate 6' and the clamping plate 12'. Further, in order to prevent the remaining water on the fixed panel 4' from leaking to the bottom of the fixed panel 4' along the gap between the clamping plate 12' and the fixed panel 4', as shown in FIG. Fig.32 , Fig.33 As shown, in this embodiment, the outer end of the bottom surface of the card plate 12' is provided with an annular positioning edge 123', and the inner side of the positioning edge 123' is provided with a sealing ring 7'. During installation, the sealing ring 7' is arranged between the bottom of the card plate 12' and the top of the fixed panel 4' to seal the gap between the two.

[0096] like Figure 33-Figure 35 As shown, for the convenience of installation, a connecting tube 16' is provided at the top of the cylinder 11', and the outer diameter of the connecting tube 16' is larger than the outer diameter of the cylinder 11'. The inner cavity of the connecting tube 16' is connected with the inner cavity of the cylinder 11', and the clamping plate 12' is extended outward from the top of the connecting tube 16'. An operating hole 17' is formed on the inner wall of the connecting tube 16', and the operating hole 17' can be in the shape of a straight line, a cross, a triangle, a regular polygon, etc., corresponding to various tools such as screwdrivers. During the installation of the cylinder 11', the cylinder 11' can be kept from rotating, and only the locking nut 2' can be rotated; or, the locking nut 2' can be kept stationary, and only the cylinder 11' can be rotated to prevent the cylinder 11' and the locking nut 2' from rotating in the same direction during installation, which is beneficial to improving the installation efficiency and installation stability.

[0097] like Fig.37As shown, in this embodiment, the top surface of the locking plate 21' is provided with a plurality of grooves 22'. Each groove 22' is used to facilitate the demolding of the parts and to reserve an overflow port for the adhesive.

[0098] like Fig.29 , Fig.31 , Fig.33 As shown, in this embodiment, the top surface of the cover plate 6' is further provided with decorative holes 63'. Each decorative hole 63' can be provided at the periphery of the vent hole 61', and each decorative hole 63' is a blind hole.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas circuit system for a cooking device, characterized in that: It comprises an inner liner (3) and a pressure-boosting air intake mechanism (4) and a pressure-reducing exhaust mechanism (5) connected to the inner liner (3); The pressurized air intake mechanism (4) comprises a fan (41), a rotating shaft (42) and a pressurized air intake pipe (43); the fan (41) is located outside the inner container (3) and is connected to one end of the rotating shaft (42); the rotating shaft (42) is passed through the side wall of the inner container (3), and one end of the rotating shaft (42) located inside the inner container (3) is provided with a stirring blade (44); the rotating shaft (42) is also provided with a turbine (45), and the turbine (45) is located between the stirring blade (44) and the side wall of the inner container (3); one end of the pressurized air intake pipe (43) is connected to the side wall of the inner container (3) corresponding to the position of the turbine (45), and the pressurized air intake pipe (43) is provided with a solenoid valve (46); The slow-pressure exhaust mechanism (5) comprises a box body (51), a slow-pressure exhaust pipe (52) and an exhaust pipe (53); an air inlet connection port (54) is provided at the bottom of one end of the box body (51), and an exhaust connection port (55) is provided at the top of the other end of the box body (51); one end of the slow-pressure exhaust pipe (52) is connected to the inner tank (3), and the other end of the slow-pressure exhaust pipe (52) is connected to the air inlet connection port (54); the exhaust pipe (53) is connected to the exhaust connection port (55); and buffer baffles (56) arranged in a staggered manner are provided in the box body (51) along the direction from the air inlet connection port (54) to the exhaust connection port (55).

2. The gas circuit system of the cooking device according to claim 1, characterized in that: The side wall of the inner tank (3) protrudes outward to form a turbine chamber (31), and the turbine (45) is located in the turbine chamber (31); a turbine air inlet is provided on the outside of the turbine chamber (31), and the turbine air inlet is connected to an air inlet cover (32), and the side of the air inlet cover (32) is connected to the boost air inlet pipe (43).

3. The gas circuit system of the cooking device according to claim 1, characterized in that: A first positioning hole (441) is provided in the middle of the stirring blade (44), and a second positioning hole (451) is provided in the middle of the turbine (45); a first positioning protrusion (421) corresponding to the first positioning hole (441) and a second positioning protrusion (422) corresponding to the second positioning hole (451) are provided on the rotating shaft (42).

4. The gas circuit system of the cooking device according to claim 1, characterized in that: A partition plate (57) is provided in the box body (51), and the partition plate (57) divides the box body (51) into a first area (511) and a second area (512); the air intake connection port (54), the air exhaust connection port (55) and the buffer baffle (56) are provided in the first area (511), the end of the boost air intake pipe (43) is connected to the second area (512), and a boost air intake hole (58) is provided on the side wall of the second area (512).

5. The gas circuit system of the cooking device according to claim 4, characterized in that: The bottom of the first area (511) is a slope, and the height of the slope gradually increases along the direction from the air inlet connection port (54) to the air outlet connection port (55).

6. The gas circuit system of the cooking device according to any one of claims 1 to 5, characterized in that: The air inlet connection port (54) is provided with a valve device; the valve device comprises a housing (1) and a pressure relief assembly (2) provided in the housing (1); the housing (1) is provided with an air inlet (11) and an air outlet (12); The pressure relief assembly (2) comprises a body (21) and an adjustment plate (22) arranged in the body (21); the body (21) is cylindrical, the top end of the body (21) is closed, the bottom end of the body (21) is connected to the air inlet (11), and the top of the side wall of the body (21) is provided with a venting slot (211); the inner wall of the bottom end of the body (21) extends inwardly to provide a limit plate (212), and the top end of the body (21) extends downward to provide a guide rod (213); the adjustment plate (22) comprises a slide plate (221) corresponding to the cross section of the body (21), and the edge of the slide plate (221) extends upward to provide a shape corresponding to the venting slot (211). A baffle (222) is provided corresponding to the slide plate (221); a notch (223) is also provided on the edge of the slide plate (221); a guide hole (2211) is provided in the middle of the slide plate (221); the slide plate (221) is sleeved on the outer periphery of the guide rod (213) through the guide hole (2211) and slides between a first position and a second position; a spring (23) is provided between the slide plate (221) and the top of the body (21) so that the slide plate (221) is against the limit plate (212) when in the first position; when the slide plate (221) slides upward from the first position to the second position, the area of ​​the ventilation slot (211) blocked by the baffle (222) gradually increases.

7. The gas circuit system of the cooking device according to claim 6, characterized in that: A cushion block (214) is provided on the limiting plate (212), so that the sliding plate (221) contacts the cushion block (214) when it is located at the first position, and an air intake space (215) is formed between the sliding plate (221) and the limiting plate (212), and an air outlet hole (216) is provided on a side wall of the air intake space (215).

8. The gas circuit system of the cooking device according to claim 7, characterized in that: An S-shaped guide groove (2131) is provided on the outer periphery of the guide rod (213), and the guide groove (2131) extends along the axial direction of the guide rod (213); a guide slider (2212) is provided on the inner wall of the guide hole (2211), and the guide slider (2212) is located in the guide groove (2131); when the slide plate (221) is located at the first position, the baffle plate (222) and the ventilation slot (211) are arranged in a staggered manner.

9. The gas circuit system of the cooking device according to claim 8, characterized in that: A cylindrical guide sleeve (2213) is provided on the outer circumference of the guide hole (2211) extending upward, and the inner diameter of the guide sleeve (2213) corresponds to the outer diameter of the guide rod (213).

10. The gas circuit system of the cooking device according to any one of claims 1 to 5, characterized in that: A valve device is provided in the air intake connection port (54); the valve device comprises a valve cylinder (6) and a driver (61); a valve hole (62) is provided on the side wall of the valve cylinder (6); The driver (61) is an electric push rod, and a piston (63) is provided in the valve barrel (6). The piston (63) is connected to the electric push rod, so that the piston (63) can move axially along the valve barrel (6) and block or partially block the valve hole (62); Alternatively, the driver (61) is a driving motor, and a blocking block (64) is provided at a position in the valve barrel (6) corresponding to the valve hole (62), and the cross-section of the blocking block (64) is semicircular; the blocking block (64) is connected to the output shaft of the driving motor so that the blocking block (64) can rotate around the axis of the valve barrel (6) and block or partially block the valve hole (62).

11. A cooking device, characterized in that: A gas circuit system comprising the cooking device according to any one of claims 1 to 10.

12. The cooking device according to claim 11, characterized in that The inner wall of the inner container (3) is provided with an air guide cover (33), and the air guide cover (33) covers the stirring blades (44) and the turbine (45); the air guide cover (33) is provided with an air guide hole.

13. The cooking device according to claim 11 or 12, characterized in that: It also includes a fixed panel (4') and an external steam exhaust terminal assembly; the external steam exhaust terminal assembly includes an exhaust port seat (1') and a locking nut (2'); the exhaust port seat (1') includes a cylindrical body (11'), and a clamping plate (12') extending outward is provided on the top of the body (11'); an external thread (111') is provided on the outer periphery of the body (11'); the locking nut (2') is connected to the body (11') by threads, and a locking plate (21') extending outward is provided on the top of the locking nut (2'), a locking space (3') is formed between the locking plate (21') and the clamping plate (12'), and the fixed panel (4') is located in the locking space (3'); the bottom end of the body (11') is connected to the exhaust pipe (53).

14. The cooking device according to claim 13, characterized in that The inner wall of the cylinder (11') is provided with an annular first baffle (13') extending inwardly, and a plurality of ribs (14') extending downward or upward are arranged at intervals on the inner side of the first baffle (13'), and a second baffle (15') is provided at the end of the rib (14'), and the second baffle (15') is fixedly connected to the end of the rib (14').

15. The cooking device according to claim 14, characterized in that A detachable cover plate (6') is provided on the top of the card plate (12'), and a vent hole (61') is provided on the cover plate (6').

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