Gas path system of cooking equipment and cooking equipment

Abstract

The utility model 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 quickly discharged, the structure is simple, the manufacturing cost is low, the assembly efficiency is high, and the problem that condensed water and steam are sputtered at the outlet of the waste gas pipe can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen appliance technical field, especially a kind of gas circuit system of cooking equipment and cooking equipment. BACKGROUND

[0002] The existing cooking equipment, for example, steam oven, oven, integrated stove or stove steaming and baking, in order to quickly discharge the cooking residual steam and oil fume in the inner container of cooking equipment, will additionally use a set of fan system, leading to excessive redundancy of parts, increase manufacturing cost, while reducing assembly efficiency. In addition, during cooking, the user suddenly closes the door or the temperature in the inner container of cooking equipment rises too fast can cause the pressure in the inner container of cooking equipment to increase suddenly, and the problem of splash condensate and steam at the outlet of exhaust pipe.

[0003] Therefore, it is necessary to provide an improved technical solution for the above-mentioned deficiencies of the prior art. SUMMARY

[0004] The utility model aims at providing a gas circuit system for a cooking appliance that can quickly discharge steam and oil fume from the inner container, has a simple structure, low manufacturing cost, and high assembly efficiency, and can also solve the problem of splash condensate and steam at the outlet of the exhaust pipe caused by the sudden increase in pressure in the inner container of the cooking appliance.

[0005] Another object of the utility model is to provide a cooking appliance that includes the above-mentioned gas circuit system for a cooking appliance, which can quickly discharge steam and oil fume from the inner container, has a simple structure, low manufacturing cost, and high assembly efficiency, and can also solve the problem of splash condensate and steam at the outlet of the exhaust pipe caused by the sudden increase in pressure in the inner container of the cooking appliance.

[0006] To achieve the above-mentioned objects, the utility model provides the following technical solutions:

[0007] A gas circuit system for a cooking appliance includes an inner container, a pressure-increasing air inlet mechanism connected to the inner container, and a pressure-reducing air outlet mechanism.

[0008] The pressure-increasing air inlet mechanism includes a fan, a rotating shaft, and a pressure-increasing air inlet pipe. The fan is located outside the inner container and is connected to one end of the rotating shaft. The rotating shaft is arranged in the side wall of the inner container, and one end of the rotating shaft located inside the inner container is provided with stirring blades. A turbine is also arranged on the rotating shaft, and the turbine is located between the stirring blades and the side wall of the inner container. One end of the pressure-increasing air inlet pipe is connected to the side wall of the inner container corresponding to the position of the turbine, and the pressure-increasing air inlet pipe is provided with a solenoid valve.

[0009] The slow pressure exhaust mechanism comprises a box body, a slow pressure exhaust pipe and a waste gas pipe; the bottom of one end of the box body is provided with an air inlet connecting port, and the top of the other end of the box body is provided with an exhaust connecting port; one end of the slow pressure exhaust pipe is connected with the inner container, and the other end of the slow pressure exhaust pipe is connected with the air inlet connecting port; the waste gas pipe is connected with the exhaust connecting port; the box body is provided with staggered buffer baffles along the direction from the air inlet connecting port to the exhaust connecting port.

[0010] According to one embodiment of the present application, the side wall of the inner container is outwardly convex to form a turbine chamber, and the turbine is located in the turbine chamber; the outer side of the turbine chamber is provided with a turbine air inlet, and the turbine air inlet is connected with an air inlet cover, and the air inlet cover is connected with the supercharged air inlet pipe.

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

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

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

[0014] According to one embodiment of the present application, the air inlet connecting port is provided with a valve device; the valve device comprises a shell and a slow pressure assembly arranged in the shell; the shell is provided with an air inlet and an exhaust port;

[0015] The slow pressure assembly comprises a body and an adjusting plate arranged in the body; the body is in a cylindrical shape, the top end of the body is closed, the bottom end of the body is connected with the air inlet, and the top of the side wall of the body is provided with a ventilation slot; the inner wall of the bottom end of the body extends inward to be provided with a limiting plate, and the top end of the body extends downward to be provided with a guide rod; the adjusting plate comprises a sliding plate corresponding to the cross section of the body, the edge of the sliding plate extends upward to be provided with a baffle corresponding to the shape of the ventilation slot, and the edge of the sliding plate is further provided with a notch; the middle part of the sliding plate is provided with a guide hole, the sliding 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 arranged between the sliding plate and the top of the body, so that the sliding plate abuts against the limiting plate when being at the first position; when the sliding plate slides upward from the first position to the second position, the area of the baffle shielding the ventilation slot gradually increases.

[0016] According to an embodiment of the utility model, the limiting plate is provided with a pad, so that the sliding plate is in contact with the pad when being at the first position, and an air inlet space is formed between the sliding plate and the limiting plate, and the side wall of the air inlet space is provided with an air outlet hole.

[0017] According to an embodiment of the utility model, the outer periphery of the guide rod is provided with an S-shaped guide groove extending along the axial direction of the guide rod; the inner wall of the guide hole is provided with a guide slider, and the guide slider is located in the guide groove; when the sliding plate is at the first position, the baffle is arranged in a dislocation mode with the ventilation slot.

[0018] According to an embodiment of the utility model, the outer periphery of the guide hole extends upward to be provided with a cylindrical guide sleeve, and the inner diameter of the guide sleeve corresponds to the outer diameter of the guide rod.

[0019] According to an embodiment of the utility model, the air inlet connecting port is provided with a valve device; the valve device comprises a valve cylinder and a driver; the side wall of the valve cylinder is provided with a valve hole;

[0020] The driver is an electric push rod, the valve cylinder is provided with a piston, the piston is connected with the electric push rod, so that the piston can move along the axial direction of the valve cylinder, and the valve hole is blocked or partially blocked;

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

[0022] The utility model also provides a kind of cooking equipment, including the air path system of the cooking equipment described above.

[0023] According to one embodiment of the utility model, the inner container inner wall is equipped with a wind scooper, the wind scooper covers the stirring fan blade and the turbine, the wind scooper is equipped with a wind guide hole.

[0024] According to one embodiment of the utility model, the cooking equipment further includes a fixed panel and an external steam exhaust end assembly, the external steam exhaust end assembly includes an exhaust port seat and a locking nut, the exhaust port seat includes a cylindrical barrel, the barrel top is equipped with an outwardly extending clamping plate, the barrel periphery is equipped with external threads, the locking nut is connected with the barrel through threads, and the locking nut top is equipped with an outwardly extending locking plate, a locking space is formed between the locking plate and the clamping plate, the fixed panel is located in the locking space, and the barrel bottom end is connected with the waste gas pipe.

[0025] According to one embodiment of the utility model, the barrel inner wall is inwardly extended and equipped with an annular first baffle, the first baffle inner side is equipped with a plurality of downwardly or upwardly extending rib plates, the rib plate ends are equipped with second baffles, and the second baffles are fixedly connected with the rib plate ends.

[0026] According to one embodiment of the utility model, the clamping plate top is equipped with a detachable cover plate, and the cover plate is equipped with a vent hole.

[0027] Compared with the prior art, the utility model embodiment has the advantages and beneficial effects that:

[0028] The gas path system of the cooking equipment and the cooking equipment provided by the utility model embodiment can quickly exhaust steam and oil fume in the inner container, have simple structure, low manufacturing cost and high assembly efficiency, and can also solve the problem of splashing condensate water and steam at the waste gas pipe outlet due to sudden pressure increase in the inner container of the cooking equipment. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings accompanying the specification of the utility model form part of the utility model and serve to provide further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof serve to explain the utility model and do not constitute improper limitation on the utility model. Among them:

[0030] Figure 1 The structure schematic view of the gas path system of the cooking equipment provided by the utility model embodiment is shown in the figure;

[0031] Figure 2 The structure schematic view of the gas path system of the cooking equipment provided by the utility model embodiment is shown in the figure;

[0032] Figure 3 The structure schematic view of the gas path system of the cooking equipment provided by the utility model embodiment is shown in the figure;

[0033] Figure 4 A schematic diagram of the gas circuit system of the cooking equipment provided in this embodiment of the present invention, showing the removal of the inner pot;

[0034] Figure 5 A side view of the gas system of the cooking apparatus provided in this embodiment of the utility model, excluding the inner pot;

[0035] Figure 6 A schematic diagram of the air intake principle of the pressurized air intake mechanism of the gas circuit system of the cooking equipment provided in this embodiment of the utility model;

[0036] Figure 7 A schematic diagram of the pressurized air intake mechanism of the gas circuit system of the cooking equipment provided in this embodiment of the utility model;

[0037] Figure 8 A schematic diagram of the structure of the gas circuit system housing of the cooking equipment provided in this embodiment of the utility model;

[0038] Figure 9 A schematic diagram of the valve device of the gas circuit system of the cooking equipment provided in this embodiment of the utility model;

[0039] Figure 10 A schematic diagram of the valve device of the gas circuit system of a cooking device provided in another embodiment of the present invention;

[0040] Figure 11 A schematic diagram of the valve device of the gas circuit system of a cooking device provided in another embodiment of the present invention;

[0041] Figure 12 A cross-sectional view of the valve device of the gas circuit system of a cooking device provided in another embodiment of the present invention;

[0042] Figure 13 A schematic diagram of the valve device assembly of the gas circuit system of a cooking device provided in another embodiment of the present invention;

[0043] Figure 14 A schematic diagram of the structure of the pressure-reducing component of the valve device of the gas circuit system of the cooking equipment provided in another embodiment of the present invention when it has the maximum air passage area;

[0044] Figure 15 yes Figure 14 A cross-sectional view along the AA direction;

[0045] Figure 16 A schematic diagram of the structure of the pressure-reducing component of the valve device of the gas circuit system of the cooking equipment provided in another embodiment of the present invention when the air passage area is minimized.

[0046] Figure 17is Figure 16 a sectional view along the direction of B-B;

[0047] Figure 18 a structure diagram of a valve seat of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0048] Figure 19 a structure diagram of a valve seat of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0049] Figure 20 a structure diagram of a valve cover of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0050] Figure 21 a structure diagram of a valve cover of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0051] Figure 22 a structure diagram of an adjusting plate of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0052] Figure 23 a structure diagram of an adjusting plate of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0053] Figure 24 a front view of a gasket of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0054] Figure 25 a top view of a gasket of a valve device of a gas circuit system of a cooking equipment according to another embodiment of the present utility model;

[0055] Figure 26 a structure diagram of a cooking equipment according to an embodiment of the present utility model;

[0056] Figure 27 a structure diagram of a wind guide cover of a cooking equipment according to an embodiment of the present utility model;

[0057] Figure 28 an assembly diagram of a wind guide cover of a cooking equipment according to an embodiment of the present utility model;

[0058] Figure 29 a structure diagram of an external steam exhaust end assembly of a cooking equipment according to an embodiment of the present utility model;

[0059] Figure 30 a structure diagram of an external steam exhaust end assembly of a cooking equipment according to an embodiment of the present utility model;

[0060] Figure 31 An assembly diagram of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model;

[0061] Figure 32 A mounting structure perspective view of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model;

[0062] Figure 33 A mounting structure sectional view of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model;

[0063] Figure 34 A structure diagram of the exhaust port seat of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model;

[0064] Figure 35 Another angle structure diagram of the exhaust port seat of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model;

[0065] Figure 36 A transverse section diagram of the exhaust port seat of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model;

[0066] Figure 37 A structure diagram of the locking nut of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model;

[0067] Figure 38 A structure diagram of the cover plate of the steam exhaust end assembly of the cooking equipment is provided for the embodiment of the utility model.

[0068] Explanation of reference signs:

[0069] 1, shell; 11, air inlet; 12, exhaust port; 13, upper shell; 14, lower shell; 2, pressure relief assembly; 21, body; 211, air vent notch; 212, limit plate; 213, guide rod; 2131, guide groove; 21311, first groove; 21312, second groove; 214, cushion block; 215, air inlet space; 216, air outlet hole; 217, valve seat; 2171, seat body; 2172, connecting cylinder; 2173, connecting hole; 218, valve cover; 2181, connecting rod; 22, adjusting plate; 221, sliding plate; 2211, guide hole; 2212, guide sliding block; 2213, guide sleeve; 222, baffle; 223, notch; 23, spring; 24, gasket; 241, protruding part; 3, inner container; 31, turbine chamber; 32, air inlet cover; 33, air guide cover; 4, supercharged air inlet mechanism; 41, fan; 42, rotating shaft; 421, first positioning protrusion; 422, second positioning protrusion; 423, first limiting protrusion; 424, first positioning piece; 425, second limiting protrusion; 426, second positioning piece; 43, supercharged air inlet pipe; 44, stirring blade; 441, first positioning hole; 45, turbine; 451, second positioning hole; 46, electromagnetic valve; 5, pressure relief exhaust mechanism; 51, box body; 511, first area; 512, second area; 52, pressure relief exhaust pipe; 53, exhaust pipe; 54, air inlet connecting port; 55, exhaust connecting port; 56, buffer baffle; 57, partition plate; 58, supercharged air inlet hole; 6, valve cylinder; 61, driver; 62, valve hole; 63, piston; 64, plugging block; 1', exhaust port seat; 11', cylinder body; 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 cylinder; 17', operation hole; 2', locking nut; 21', locking plate; 22', groove; 3', locking space; 4', fixed panel; 41', mounting hole; 6', cover plate; 61', air hole; 62', mounting protrusion; 63', decorative hole; 7', sealing ring. DETAILED DESCRIPTION

[0070] The present application will be described in detail below with reference to the drawings and embodiments. Each example is provided by way of explanation of the present application and is not intended to limit the present application. In fact, those skilled in the art will appreciate that modifications and variations to the present application can be made without departing from the scope or spirit of the present application. For example, features shown as or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present application encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.

[0071] In the description of the utility model, "first", "second" and similar words do not represent any order, quantity or importance, but only distinguish different components, "include" or "contain" and similar words mean that the element or object before the word covers the element or object listed after the word and its equivalent, and other elements or objects are not excluded, the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and does not require the utility model to be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. The terms "connected", "connected", "provided" used in the utility model should be understood broadly, for example, it can be fixed connection, can also be detachable connection, can be directly connected, can also be indirectly connected through an intermediate part, can be wired electrical connection, wireless electrical connection or wireless communication signal connection, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0072] As Figures 1-5 shown, the utility model discloses a kind of gas circuit systems of cooking equipment, including inner bag 3 and with the inner bag 3 connection's pressure-increasing intake mechanism 4 and slow pressure exhaust mechanism 5.The pressure-increasing intake mechanism 4 includes fan 41, rotating shaft 42 and pressure-increasing intake pipe 43.The fan 41 is located the outside of the inner bag 3, and is connected with one end of the rotating shaft 42.The rotating shaft 42 is arranged on the side wall of the inner bag 3, and one end of the rotating shaft 42 located the inside of the inner bag 3 is equipped with stirring vane 44.The rotating shaft 42 is also equipped with turbine 45, and the turbine 45 is located between the stirring vane 44 and the side wall of the inner bag 3.The one end of the pressure-increasing intake pipe 43 is connected with the position corresponding to the turbine 45 of the side wall of the inner bag 3, with reference to Figure 5 、 Figure 6 、 Figure 8 , pressure-increasing intake pipe 43 end is equipped with solenoid valve 46.The slow pressure exhaust mechanism 5 includes box 51, slow pressure exhaust pipe 52 and waste gas pipe 53.The bottom of one end of the box 51 is equipped with air inlet connection 54, and the top of the other end of the box 51 is equipped with exhaust connection 55.The one end of the slow pressure exhaust pipe 52 is connected with the inner bag 3, and the other end of the slow pressure exhaust pipe 52 is connected with the air inlet connection 54.The waste gas pipe 53 is connected with the exhaust connection 55.With reference to Figure 8 , the box 51 is equipped with staggered buffer baffle 56 along the direction of the air inlet connection 54 to the exhaust connection 55.

[0073] As Figures 4-6As shown, in the gas system of the cooking equipment provided in this embodiment of the present invention, when the stirring blade 44 rotates, the airflow in the middle of the inner pot 3 of the cooking equipment is drawn in from the middle of the stirring blade 44 and diffused to the surroundings, evenly spreading inside the inner pot 3 to achieve uniform heating of the food inside 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, with the airflow direction being A→B. After the air in area A is compressed and transmitted to area B, a low pressure will appear near area A. If it is necessary to inject a large amount of air into the inner pot 3 to expel the steam and / or fumes inside, the solenoid valve 46 connected to the booster intake pipe 43 is opened, and air enters the inner pot 3 through the booster intake pipe 43 (e.g., Figure 4 Downward arrow and as shown Figure 6 As indicated by the arrow, the air flows towards area A and then towards area B, thus injecting a large amount of air into the inner liner 3. If no air needs to be injected into the inner liner 3, the solenoid valve 46 connected to the booster intake pipe 43 is closed, preventing air from entering the inner liner 3 through the booster intake pipe 43. This creates an airflow vortex near the turbine 45, promoting heat exchange circulation within the inner liner 3 and achieving faster, more even heating of the food inside. The booster intake mechanism 4 can turbocharge air into the inner liner 3 of the cooking equipment, quickly expelling residual steam and fumes. This solves the problem of steam and / or fumes accumulating in the inner liner 3 after cooking, causing a steam rush when the user opens the door, and / or the difficulty in quickly expelling fumes accumulated in the inner liner 3. The turbine 45 and the stirring blades 44 are coaxially mounted with a shared fan 41, eliminating the need for a separate fan system, simplifying the overall system structure, reducing manufacturing costs, and increasing assembly efficiency. At the end of cooking or after cooking, a large amount of heat accumulates in the electrical component area at the top of the cooking equipment. If this heat is not dissipated in time, it will negatively impact the lifespan of the electrical components. The pressurized air intake mechanism 4 can draw hot air from the electrical component area and inject it into the inner liner 3, thereby accelerating heat dissipation in the electrical component area and extending the lifespan of the electrical components. During cooking, if the user suddenly closes the door or the temperature of the inner liner 3 rises too quickly, causing a sudden increase in pressure inside the inner liner 3, the high-pressure gas inside the inner liner 3 flows into the housing 51 through the pressure-relieving exhaust pipe 52 (e.g., when...). Figure 4 As shown by the upward arrow in the middle, 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, thus solving the problem of splashing condensate 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 application, the side wall of the inner container 3 is outwardly convex 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 with an air inlet cover 32, and the air inlet cover 32 is connected with the supercharged air pipe 43. The turbine chamber 31 can promote the supercharging of the turbine 45 in the inner container 3, and the air inlet cover 32 is used to guide the air flow into the inner container 3. After the electromagnetic valve 46 is opened, the inside of the air inlet cover 32 is connected with the atmosphere, and due to the working of the fan 41, the A area of the turbine 45 will compress the air to be transmitted to the B area, and then transmitted to the inner container 3, so as to increase the air pressure in the inner container 3, and the steam and oil fume are quickly discharged through the slow pressure exhaust mechanism 5. After the electromagnetic valve 46 works for a period of time, the residual oil fume and steam in the inner container 3 will be greatly reduced, avoiding the situation that the user opens the door and the oil fume and / or steam pats the face, and the peculiar smell in the inner container 3 can be quickly discharged.

[0075] In order to prevent relative rotation between the stirring blade 44 and the rotating shaft 42, and between the turbine 45 and the rotating shaft 42, and to affect the rotation of the stirring blade 44 and the turbine 45, as shown in one embodiment of the present application, the middle part of the stirring blade 44 is provided with a first positioning hole 441, the middle part of the turbine 45 is provided with a second positioning hole 451, and the rotating shaft 42 is provided with 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. Figure 7 As shown in one embodiment of the present application, the middle part of the stirring blade 44 is provided with a first positioning hole 441, the middle part of the turbine 45 is provided with a second positioning hole 451, and the rotating shaft 42 is provided with 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. 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 position of the two sides of the stirring blade 44 and the turbine 45, and prevent them from moving along the axial direction of the rotating shaft 42, one end of the first positioning protrusion 421 towards the second positioning protrusion 422 is provided with a first limiting protrusion 423, and the other end is provided with a first positioning member 424, and the cross section shape of the first limiting protrusion 423 corresponds to the cross section shape of the second positioning hole 451, so as to facilitate the installation of the turbine 45. One end of the second positioning protrusion 422 towards the fan 41 is provided with a second limiting protrusion 425, and the other end is provided with a second positioning member 426. In this embodiment, the first positioning member 424 is a nut, and the second positioning member 426 is a C-shaped buckle.

[0076] As Figure 8As shown, in an embodiment of the present application, the box 51 is provided with a partition plate 57, which divides the box 51 into a first area 511 and a second area 512. The air inlet connection port 54, the air outlet connection port 55 and the buffer baffle 56 are arranged in the first area 511, the end of the booster air inlet pipe 43 is connected with the second area 512, and the side wall of the second area 512 is provided with a booster air inlet hole 58. The first area 511 is used for buffering exhaust gas, and the second area 512 is used for air entering the booster air inlet pipe 43 to flow into the inner container 3. Further, the electromagnetic valve 46 is arranged in the second area 512, and the electromagnetic valve 46 is opened when the booster air inlet mechanism 4 needs air flow to enter, and the hot air above the electric appliance enters the booster air inlet pipe 43 from the booster air inlet hole 58 and is compressed into the inner container 3; and the electromagnetic valve 46 is closed when the booster air inlet mechanism 4 does not need air flow to enter, so as to prevent external influence on the cooking effect. Further, 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. Steam and oil fumes flow into the box 51 through the air inlet connection port 54, flow upwards along the slope, and in this process, kinetic energy is consumed by the slope and the buffer baffle 56 on the slope, so as to further reduce the negative influence of sudden change of air pressure, and finally flow into the exhaust pipe 53 through the air outlet connection port 55 and be discharged to the outside. Since the sudden increase of air pressure is relieved, the gas pressure and flow rate at the outlet of the exhaust pipe 53 can be reduced, and the problems of splashing of condensed water and steam at the outlet of the exhaust pipe 53 are solved.

[0077] In order to further reduce the gas pressure and flow rate at the outlet of the exhaust pipe 53, the air inlet connection port 54 is provided with a valve device. The valve device can automatically adjust the air outlet area, and when the air pressure in the inner container 3 is large, the air passage area is reduced, so as to ensure smooth air flow at the air outlet connection port 55, reduce the gas pressure and flow rate at the outlet of the exhaust pipe 53, and solve the problems of splashing of condensed water and steam at the outlet of the exhaust pipe 53.

[0078] As shown, Figure 9 , Figure 10As shown in the utility model in one embodiment, the valve device includes valve cylinder 6 and driver 61, the valve cylinder 6 side wall is equipped with valve hole 62. The valve cylinder 6 one end is open, the other end is connected with the driver 61 and is blocked by the driver 61. The driver 61 can be electric push rod or drive motor. When the driver 61 is electric push rod, the valve cylinder 5 is equipped with piston 63, the piston 63 is connected the electric push rod, makes the piston 63 can move along the valve cylinder 6 axial direction, and blocks or partially blocks the valve hole 62. When the driver 61 is drive motor, the valve cylinder 6 is equipped with blocking piece 64 in the position corresponding to the valve hole 62, the cross section of the blocking piece 64 is semicircular. The blocking piece 64 is connected with the output shaft of the drive motor, makes the blocking piece 64 can revolve around the axis of the valve cylinder 6, and blocks or partially blocks the valve hole 62. Using drive motor or electric push rod also needs some necessary electric control elements and control logic: when the oven door control switch (for identifying whether the oven door is opened) feedbacks door closing signal (or when the air pressure sensor arranged in the inner container 3 identifies that the air pressure rises, or the solenoid valve 46 of the pressure-increasing air inlet pipe 43 feedbacks opening signal), the electric push rod or drive motor starts to move and reduces the ventilation area of the valve cylinder 6. Normally, the electric push rod or drive motor controls the valve hole 62 to open and close to the appropriate position.

[0079] In another embodiment of the utility model, as shown in the figure, Figures 11-13 The valve device includes shell 1 and pressure relief assembly 2 arranged in the shell 1. The shell 1 is provided with air inlet 11 and air outlet 12, and the air inlet 11 is connected with the air inlet connector 54. The pressure relief assembly 2 includes body 21 and adjusting plate 22 arranged in the body 21. The body 21 is in a cylindrical shape, for example, a circular cylindrical shape. The top end of the body 21 is closed, the bottom end of the body 21 is connected with the air inlet 11, and the top part of the side wall of the body 21 is provided with ventilation slot 211. The inner wall of the bottom end of the body 21 extends inwardly to form limiting plate 212, and the top end of the body 21 extends downwardly to form guide rod 213. As shown in the figure, Figure 22 、 Figure 23 The adjusting plate 22 includes sliding plate 221 corresponding to the cross section of the body 21, the edge of the sliding plate 221 extends upwardly to form baffle 222 corresponding in shape to the ventilation slot 211, and the edge of the sliding plate 221 is further provided with notch 223. The middle part of the sliding plate 221 is provided with guide hole 2211, the sliding plate 221 is sleeved on the outer periphery of the guide rod 213 through the guide hole 2211, and slides between the first position and the second position. The sliding plate 221 and the top part of the body 21 are provided with spring 23, so that the sliding plate 221 abuts against the limiting plate 212 when being at the first position. When the sliding plate 221 slides upwardly from the first position to the second position, the area of the ventilation slot 211 blocked by the baffle 222 gradually increases.

[0080] In use, the air valve device of the present embodiment is connected with the air inlet 11 and the air outlet 12 is located in the box 51. The pressure P1 generated by the spring 23 acting on the slide plate 221 of the adjusting plate 22 is in opposition to the air pressure P2 in the inner container 3 of the cooking appliance. When (P2>P1+atmospheric pressure+the pressure generated by the gravity of the adjusting plate), the adjusting plate 22 rises, the air passage area decreases, the spring 23 is compressed, and the spring pressure on the adjusting plate 22 increases. Conversely, the adjusting plate 22 falls to the lowest position on the limiting plate 212, the air passage area increases, and the spring pressure on the adjusting plate 22 decreases. Specifically, as shown in Figure 14 、 Figure 15 when the pressure in the inner container 3 of the cooking appliance is equal to or slightly higher than the atmospheric pressure, the slide plate 221 of the adjusting plate 22 contacts or is close to the limiting plate 212, at this time, the baffle 222 of the adjusting plate 22 does not completely or slightly blocks the air passage slot 211, for example, the baffle 222 is completely or partially located below the air passage slot 211. At this time, the gas in the inner container 3 of the cooking appliance enters the bottom end of the body 21 from the air inlet 11 through the pressure relief exhaust pipe 52, flows to the inside of the adjusting plate 22 from the gap 223 at the edge of the slide plate 221, and flows into the inside of the shell 1 from the air passage slot 211 of the body 21, and finally flows out from the air outlet 12 of the shell 1 to the inside of the box 51. When the adjusting plate 22 is located at the first position, the baffle 222 does not completely block the air passage slot 211, and the air passage area of the pressure relief assembly 2 is the largest. As shown in Figure 16 、 Figure 17As shown, when the pressure in the inner container 3 of the cooking device is higher than or much higher than the atmospheric pressure, the adjusting plate 22 is affected by the gas pressure and slides upward along the guide rod 213. After the gas pressure is balanced, the sliding plate 221 of the adjusting plate 22 is close to or very close to the top end of the body 21, and at this time, the baffle 222 of the adjusting plate 22 blocks part or most of the air passage slot 211. At this time, the gas in the inner container 3 of the cooking device enters the bottom end of the body 21 through the air inlet 11 of the pressure relief exhaust pipe 52, flows to the inside of the adjusting plate 22 from the gap 223 at the edge of the sliding plate 221, and flows into the inside of the shell 1 from the air passage 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 adjusting plate 22 is in the second position, the baffle 222 blocks most of the air passage slot 211, the air passage area of the pressure relief assembly 2 is the smallest, and the high-pressure gas in the inner container 3 of the cooking device will flow out from the smallest air passage area, and the cross-sectional area of the space from the top end of the body 21 to the exhaust port 12 is larger than that of the air inlet 11, which can absorb the kinetic energy of the high-speed gas flow, so that the gas pressure and flow rate at the exhaust port 12 increase in a slow form, further relieving the problem that the residual water or oil stains are splashed out due to the sudden increase in gas pressure at the end of the exhaust pipe 53. And at the same time, it can solve the problem that the pressure in the inner container 3 of the integrated stove or the steaming and baking module of the steaming and baking device decays greatly during cooking. As the pressure in the space from the top end of the body 21 to the exhaust port 12 (which is basically equal to the pressure in the exhaust pipe 53) increases, the adjusting plate 22 gradually descends to the first position, the air passage area of the pressure relief assembly 2 gradually increases, so that the exhaust is more smooth, the gas pressure in the exhaust pipe 53 is stable, and the problem of additional noise caused by the unbalanced vibration of the gas pressure in the exhaust pipe 53 due to the abnormal operation of the fan in the exhaust system of the integrated stove or the range hood can be solved.

[0081] As Figure 12 , Figure 14 , Figure 16 , Figure 18 , Figure 19As shown, in order to ensure that the pressure relief assembly 2 has at least a certain ventilation area, ensures the smoothness of the gas, prevents the pressure relief assembly 2 from completely blocking the body 21, in the embodiment, the limiting plate 212 is provided with a pad 214, so that the sliding plate 221 is in contact with the pad 214 when it is located at the first position, and an air inlet space 215 is formed between the sliding plate 221 and the limiting plate 212. The side wall of the air inlet space 215 is provided with an air outlet hole 216. The air inlet space 215 can ensure that the pressure relief assembly 2 has at least a certain ventilation area, and the gas in the inner container 3 of the cooking device passes through the pressure relief exhaust pipe 52 and enters the bottom end of the body 21 from the air inlet 11. Even if the adjusting plate 22 completely blocks the body 21, the gas can also enter the shell 1 from the air inlet space 215 and the air outlet hole 216, and then flow out from the exhaust port 12 of the shell 1 into the box 51. In addition, the cooperation of the pad 214 and the air outlet hole 216 can also return the condensed water.

[0082] As shown in Figure 12 , Figure 14 , Figure 16 , Figure 20 , Figure 21 As shown, in order to avoid the self-rotation of the adjusting plate 22 when sliding on the guide rod 213, which leads to the failure of the blocking of the ventilation slot 211, in the embodiment, the outer periphery of the guide rod 213 is provided with an S-shaped guide groove 2131 extending along the axial direction of the guide rod 213. As shown in Figure 22 , Figure 23 The inner wall of the guide hole 2211 is provided with a guide sliding block 2212 located in the guide groove 2131. When the sliding plate 221 is located at the first position, the baffle 222 is arranged in a staggered manner with the ventilation slot 211. In the embodiment, the guide groove 2131 can make the adjusting plate 22 rotate at a predetermined angle, and when the sliding plate 221 is located at the first position, the baffle 222 is arranged in a staggered manner with the ventilation slot 211, which ensures the maximum ventilation area; when the sliding plate 221 slides upward from the first position to the second position, under the action of the guide groove 2131 and the guide sliding block 2212, the adjusting plate 22 drives the baffle 222 to rotate, and in the process of rotation, the baffle 222 gradually blocks the ventilation slot 211, reducing the ventilation area. Due to the limitation of the guide groove 2131, the movement track of the baffle 222 can be accurate, and accidental rotation can be avoided.

[0083] As shown in Figure 20 , Figure 21As shown, in order to make the adjusting plate 22 more stable in rotation and sliding, in the embodiment, the number of the guide grooves 2131 is two, which are symmetrically arranged on both sides of the guide rod 213; correspondingly, the number of the guide sliding blocks 2212 is also two, which are respectively arranged on the inner walls on both sides of the guide hole 2211. Further, in order to make the sliding plate 221 more stable in sliding, the guide hole 2211 is outwardly extended and provided with a cylindrical guide sleeve 2213, the inner diameter of the guide sleeve 2213 corresponds to the outer diameter of the guide rod 213.

[0084] As shown in FIG. 6, in the embodiment, the number of the ventilation slots 211 is four, which are uniformly distributed on the outer periphery of the body 21. Correspondingly, the number of the baffles 222 is also four, which are uniformly distributed on the outer peripheral edge of the sliding plate 221, and the notch 223 is located between two adjacent baffles 222. Figures 18-21

[0085] As shown in FIG. 6, in the embodiment, the guide groove 2131 includes two vertical first grooves 21311 and a second groove 21312 between the two first grooves 21311, the first grooves 21311 extend along the axial direction of the guide rod 213, and the axes of the two first grooves 21311 do not coincide 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 with the two first grooves 21311. In the embodiment, the rotation angle of the baffle 222 needs to be (360° ÷ 8 =) 45°, that is, the rotation angle range of the adjusting plate 22 is in 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 respectively correspond to the maximum and minimum ventilation areas. Figure 20 Figure 21 In order to make the force of the spring 23 on the adjusting plate 22 more uniform and ensure the stability of the adjusting plate 22 in sliding, as shown in FIG. 7, in the embodiment, the bottom end of the spring 23 is provided with an annular gasket 24, and the gasket 24 abuts against the sliding plate 221. Preferably, the bottom end of the gasket 24 is provided with a protruding part 241 to reduce the dynamic friction when the sliding plate 221 and the gasket 24 relatively rotate. Preferably, the gasket 24 is a graphite gasket, because graphite has lubricating effect, the friction coefficient between the two is small, and in addition, the point contact, so the graphite gasket can reduce the friction force suffered by the adjusting plate 22 during movement.

[0086] In order to facilitate the assembly of the pressure relief assembly 2, as shown in FIG. 8, in the embodiment, the bottom end of the spring 23 is provided with a protruding part 231, and the protruding part 231 is provided with a plurality of guide holes 2311, and the guide rod 213 is inserted into the guide holes 2311. Figure 12 Figure 14 Figure 16 In order to facilitate the assembly of the pressure relief assembly 2, as shown in FIG. 8, in the embodiment, the bottom end of the spring 23 is provided with a protruding part 231, and the protruding part 231 is provided with a plurality of guide holes 2311, and the guide rod 213 is inserted into the guide holes 2311.

[0087] In order to facilitate the assembly of the pressure relief assembly 2, as shown in FIG. 8, in the embodiment, the bottom end of the spring 23 is provided with a protruding part 231, and the protruding part 231 is provided with a plurality of guide holes 2311, and the guide rod 213 is inserted into the guide holes 2311. Figure 12 Figure 13 ,​​​​​Figures 18-21 As shown in the embodiment, the body 21 comprises a valve seat 217 and a valve cover 218. The valve seat 217 comprises a cylindrical seat body 2171, an inner wall of one end of the seat body 2171 is provided with the limiting plate 212, and the other end of the seat body 2171 is detachably connected with the valve cover 218. The guide rod 213 is fixedly connected with the bottom of the valve cover 218. Further, the bottom of the seat body 2171 of the valve seat 217 is provided with a downwardly extending connecting cylinder 2172, and an outer wall of the connecting cylinder 2172 is threadedly connected with an inner wall of the air inlet 11. In order to realize the detachable connection of the seat body 2171 and the valve cover 218, in the embodiment, the valve cover 218 is provided with vertical connecting rods 2181 at both ends, and the valve seat 217 is provided with connecting holes 2173 corresponding to the connecting rods 2181. The connecting rods 2181 and the connecting holes 2173 can be connected by buckling or threading.

[0088] In order to facilitate the assembly of the valve device, as shown in Figure 11 , Figure 12 , Figure 13 As shown in the embodiment, the shell 1 comprises an upper shell 13 and a lower shell 14, and the bottom of the upper shell 13 is detachably connected with the top of the lower shell 14, 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] As shown in the embodiment, the shell 1 comprises an upper shell 13 and a lower shell 14, and the bottom of the upper shell 13 is detachably connected with the top of the lower shell 14, 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. Figure 26 As shown in the embodiment, the shell 1 comprises an upper shell 13 and a lower shell 14, and the bottom of the upper shell 13 is detachably connected with the top of the lower shell 14, 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.

[0090] Figure 27 , Figure 28 As shown in the embodiment, the shell 1 comprises an upper shell 13 and a lower shell 14, and the bottom of the upper shell 13 is detachably connected with the top of the lower shell 14, 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.

[0091] As shown in the embodiment, the shell 1 comprises an upper shell 13 and a lower shell 14, and the bottom of the upper shell 13 is detachably connected with the top of the lower shell 14, 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. Figures 29-31 ​As 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 body 11', with an outwardly extending retaining plate 12' at the top. The outer periphery of the body 11' has external threads 111'. The locking nut 2' is threadedly connected to the body 11', and the top of the locking nut 2' has an outwardly extending locking plate 21', forming a locking space 3' between the locking plate 21' and the retaining plate 12'. The fixing panel 4' is located within the locking space 3'. The bottom end of the body 11' is connected to the exhaust pipe 53.

[0092] like Figures 32-33 As shown, in this embodiment, the external steam exhaust terminal assembly is installed and used with the cylinder 11' positioned within the mounting hole 41' on the fixed panel 4'. The fixed panel 4' can be the panel on top of a cooking appliance or the cooktop panel of an integrated stove. The clamping plate 12' abuts against the top surface of the fixed panel 4', and the locking plate 21' abuts against the bottom surface of the fixed panel 4', clamping the fixed panel 4' within the locking space 3' to complete the installation. 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 exit from the top of the cylinder 11'. Compared to existing steam exhaust devices that require a semi-circular groove behind the cooktop panel, the external steam exhaust terminal assembly provided in this embodiment has a simpler structure, smaller size, lower cost, and more secure assembly, without affecting the user experience. In addition, the fixed panel 4' that cooperates with the steam exhaust terminal assembly provided in this embodiment only needs to have a round hole. During the production process of the fixed panel 4' (e.g., glass), it can be processed together with other openings without changing the machine tool, which improves production efficiency and cost.

[0093] To prevent steam carrying condensate from rushing out of the top of the cylinder 11' and soiling the fixed panel 4' of the cooking equipment, and to prevent scalding from excessively hot steam, such as... Figures 34-36 As shown, in this embodiment, the inner wall of the cylinder 11' extends inwardly with an annular first baffle 13'. Multiple downwardly or upwardly extending ribs 14' are spaced apart on the inner side of the first baffle 13'. A second baffle 15' is provided at the end of each rib 14', and the second baffle 15' is fixedly connected to the end of the rib 14'. In this embodiment, the multiple ribs 14' extend downwards. A channel for gas passage is formed between two adjacent ribs 14', and the second baffle 15' can slow down the upward discharge speed of the gas, reduce the impact of the discharged steam, and prevent condensate splashing. In addition, the ribs 14' and the second baffle 15' can also prevent debris from falling into the cylinder 11' and blocking the lower exhaust pipe 53.

[0094] To further prevent steam carrying condensate from rushing out of the top of the cylinder 11', the cooking equipment has a fixed panel 4', and to prevent overheated steam from scalding the user, such as...Figure 29 , Figures 31-33 As shown, in this embodiment, the top of the card plate 12' is provided with a detachable cover plate 6', which covers the top of the cylinder 11', and the cover plate 6' is provided with a vent hole 61' for discharging steam and other gases. To achieve a detachable connection, as... Figure 33 , Figure 38 As shown, in this embodiment, the outer end of the top surface of the retaining 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', which is engaged below the mounting ridge 121'. This snap-fit ​​structure facilitates the installation and removal of the cover plate 6' and makes it easier to clean the surface of the retaining plate 12'. Preferably, there are multiple mounting protrusions 62', which are evenly distributed on the inner wall of the cover plate 6'.

[0095] To prevent condensate from leaking along the gap between the retaining plate 12' and the cover plate 6' onto the fixed panel 4', such as Figures 33-35 As shown, in this embodiment, the inner side of the mounting ridge 121' is provided with an annular water-stopping ridge 122', which abuts against the bottom surface of the cover plate 6'. Additionally, the water-stopping ridge 122' can also prevent steam from impacting the edge where the cover plate 6' and the retaining plate 12' mate. Furthermore, to prevent residual water on the fixing panel 4' from leaking along the gap between the retaining plate 12' and the fixing panel 4' to the bottom of the fixing panel 4', as shown... Figure 32 , Figure 33 As shown, in this embodiment, the outer end of the bottom surface of the card plate 12' is provided with an annular positioning ridge 123', and the inner side of the positioning ridge 123' is provided with a sealing ring 7'. During installation, the sealing ring 7' is placed 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 Figures 33-35 As shown, for ease of installation, a connecting cylinder 16' is provided at the top of the cylinder 11', and the outer diameter of the connecting cylinder 16' is larger than the outer diameter of the cylinder 11'. The inner cavity of the connecting cylinder 16' communicates with the inner cavity of the cylinder 11', and the clamping plate 12' extends outward from the top of the connecting cylinder 16'. An operating hole 17' is formed on the inner wall of the connecting cylinder 16', which can be in the shape of a flathead, cross, triangle, or regular polygon, corresponding to various tools such as screwdrivers. During the installation of the cylinder 11', the cylinder 11' can be kept stationary, and only the locking nut 2' needs to be rotated; or, the locking nut 2' can be kept stationary, and only the cylinder 11' can be rotated, preventing the cylinder 11' and the locking nut 2' from rotating in the same direction during installation, which helps to improve installation efficiency and stability.

[0097] like Figure 37As shown in the drawings, in the embodiment, the top surface of the lock plate 21' is provided with a plurality of recesses 22'. Each recess 22' is used for facilitating the part manufacturing and reserving the glue overflow port.

[0098] As shown in the drawings, in the embodiment, the top surface of the lock plate 21' is provided with a plurality of recesses 22'. Each recess 22' is used for facilitating the part manufacturing and reserving the glue overflow port. Figure 29 、 Figure 31 、 Figure 33 As shown in the drawings, in the embodiment, the top surface of the lock plate 21' is provided with a plurality of recesses 22'. Each recess 22' is used for facilitating the part manufacturing and reserving the glue overflow port.

[0099] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gas circuit system of a cooking apparatus, characterized by, The inner container (3) is connected with a pressurized air intake mechanism (4) and a slow pressure exhaust mechanism (5). 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 with one end of the rotating shaft (42); the rotating shaft (42) is arranged through the side wall of the inner container (3); one end of the rotating shaft (42) located inside the inner container (3) is provided with stirring blades (44); a turbine (45) is further arranged on the rotating shaft (42) and is located between the stirring blades (44) and the side wall of the inner container (3); one end of the pressurized air intake pipe (43) is connected with the side wall of the inner container (3) at a position corresponding to the turbine (45); and the pressurized air intake pipe (43) is provided with an electromagnetic valve (46). The slow pressure exhaust mechanism (5) comprises a box body (51), a slow pressure exhaust pipe (52) and a waste gas pipe (53); the bottom of one end of the box body (51) is provided with an air inlet connecting port (54), and the top of the other end of the box body (51) is provided with an air outlet connecting port (55); one end of the slow pressure exhaust pipe (52) is connected with the inner container (3), and the other end of the slow pressure exhaust pipe (52) is connected with the air inlet connecting port (54); the waste gas pipe (53) is connected with the air outlet connecting port (55); and the box body (51) is provided with staggered buffer baffles (56) along the direction from the air inlet connecting port (54) to the air outlet connecting port (55).

2. The gas circuit system of a cooking appliance according to claim 1, characterized in that, The side wall of the inner container (3) is outwardly protruded 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 with an air inlet cover (32) which is connected with the pressurized air intake pipe (43) on the side.

3. The gas circuit system of a cooking appliance according to claim 1, characterized in that, The middle part of the stirring blades (44) is provided with a first positioning hole (441), and the middle part of the turbine (45) is provided with a second positioning hole (451); the rotating shaft (42) is provided with 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).

4. The gas circuit system of a cooking apparatus according to claim 1, wherein The box body (51) is provided with a partition plate (57) which divides the box body (51) into a first area (511) and a second area (512); the air inlet connecting port (54), the air outlet connecting port (55) and the buffer baffles (56) are arranged in the first area (511), the end of the pressurized air intake pipe (43) is connected with the second area (512), and the side wall of the second area (512) is provided with a pressurized air intake hole (58).

5. The gas circuit system of a cooking appliance 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 connecting port (54) to the air outlet connecting port (55).

6. The gas circuit system of the cooking apparatus according to any one of claims 1 to 5, characterized in that, The air inlet connector (54) is provided with a valve device; the valve device comprises 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); The pressure relief assembly (2) comprises a body (21) and an adjusting plate (22) arranged in the body (21); the body (21) is in a cylindrical shape, the top end of the body (21) is closed, the bottom end of the body (21) is connected with the air inlet (11), and the top of the side wall of the body (21) is provided with an air vent notch (211); the inner wall of the bottom end of the body (21) extends inwardly to be provided with a limiting plate (212), and the top end of the body (21) extends downwardly to be provided with a guide rod (213); the adjusting plate (22) comprises a sliding plate (221) corresponding to the cross section of the body (21), the edge of the sliding plate (221) extends upwardly to be provided with a baffle (222) corresponding to the shape of the air vent notch (211), and the edge of the sliding plate (221) is further provided with a notch (223); the middle part of the sliding plate (221) is provided with a guide hole (2211), the sliding 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; the sliding plate (221) and the top of the body (21) are provided with a spring (23), so that the sliding plate (221) abuts against the limiting plate (212) when being at the first position; when the sliding plate (221) slides upwardly from the first position to the second position, the area of the air vent notch (211) blocked by the baffle (222) gradually increases.

7. The gas circuit system of a cooking appliance according to claim 6, characterized in that, The limiting plate (212) is provided with a pad (214), so that the sliding plate (221) is in contact with the pad (214) when being at the first position, and an air inlet space (215) is formed between the sliding plate (221) and the limiting plate (212), and the side wall of the air inlet space (215) is provided with an air outlet hole (216).

8. The gas circuit system of a cooking appliance according to claim 7, characterized in that, The outer periphery of the guide rod (213) is provided with an S-shaped guide groove (2131) extending along the axial direction of the guide rod (213); the inner wall of the guide hole (2211) is provided with a guide sliding block (2212) located in the guide groove (2131); when the sliding plate (221) is at the first position, the baffle (222) is arranged in a dislocation manner with the air vent notch (211).

9. The gas circuit system of a cooking appliance according to claim 8, characterized in that, The outer periphery of the guide hole (2211) extends upwardly to be provided with a cylindrical guide sleeve (2213), 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 apparatus according to any one of claims 1 to 5, characterized in that, The air inlet connector (54) is provided with a valve device; the valve device comprises a valve cylinder (6) and a driver (61); the side wall of the valve cylinder (6) is provided with a valve hole (62); The driver (61) is an electric push rod, a piston (63) is arranged in the valve cylinder (6), the piston (63) is connected with the electric push rod, the piston (63) can move axially along the valve cylinder (6) and block or partially block the valve hole (62); Alternatively, the driver (61) is a driving motor, a blocking block (64) corresponding to the position of the valve hole (62) is arranged in the valve cylinder (6), the cross section of the blocking block (64) is semicircular; the blocking block (64) is connected with the output shaft of the driving motor, so that the blocking block (64) can rotate around the axis of the valve cylinder (6) and block or partially block the valve hole (62).

11. A cooking apparatus, characterized by, A gas circuit system of a cooking device according to any one of claims 1 to 10.

12. The cooking apparatus according to claim 11, wherein, The inner container (3) is provided with a wind guide cover (33) covering the stirring blade (44) and the turbine (45); the wind guide cover (33) is provided with a wind guide hole.

13. The cooking apparatus according to claim 11 or 12, characterized in that, Further comprising a fixed panel (4') and an external steam exhaust end assembly; the external steam exhaust end assembly comprises an exhaust port seat (1') and a locking nut (2'); the exhaust port seat (1') comprises a cylindrical barrel (11'), the top of the barrel (11') is provided with an outwardly extending clamping plate (12'); the outer periphery of the barrel (11') is provided with external threads (111'); the locking nut (2') is connected with the barrel (11') through threads, and the top of the locking nut (2') is provided with an outwardly extending locking plate (21'), the 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 with the exhaust pipe (53).

14. The cooking apparatus according to claim 13, wherein, The inner wall of the barrel (11') is inwardly extended and provided with an annular first baffle (13'), the inner side of the first baffle (13') is spaced apart and provided with a plurality of downwardly or upwardly extending rib plates (14'), the end of the rib plate (14') is provided with a second baffle (15'), and the second baffle (15') is fixedly connected with the end of the rib plate (14').

15. The cooking apparatus according to claim 14, wherein, The top of the clamping plate (12') is provided with a detachable cover plate (6'), and the cover plate (6') is provided with a ventilation hole (61').

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