TWI799353B - cooking utensils - Google Patents

Abstract

The invention provides a cooking utensil, which comprises a pot body, an outer pot, a draining and steaming component, a pressure regulating component, a pot cover and a heating element. The outer pot is arranged in the pot body and has air guide holes on the edge of the outer pot. The draining and steaming assembly includes an inner pot and an inner pot sealing ring. The inner pot is detachably arranged in the outer pot and forms a pressure chamber with the outer pot. Between the edge of the inner pot and the edge of the outer pot, the connecting part of the sealing ring of the inner pot is against the outer wall of the inner pot to tighten the sealing ring of the inner pot, and a connecting air hole is formed between the sealing ring of the inner pot and the opposite outer pot And the air guide channel of the pressure chamber. The pressure regulating component is arranged on the pot body and is sealed and communicated with the air guide hole. The pressure regulating component is used to adjust the pressure in the pressure chamber; or when the draining and steaming component is removed, it can transmit gas to the outer pot to reduce the temperature of the liquid in the outer pot. The pot lid is sealed and closed to the inner pot through the pot cover sealing ring; or the pot cover can be sealed and closed to the outer pot through the pot cover sealing ring when the draining and steaming assembly is removed.

Description

cooking utensils

The invention relates to the field of household appliances, and in particular to a cooking utensil.

Drained rice has a lower sugar content, which is very beneficial for diabetics; and compared with stewed rice, the degree of gelatinization of rice can be better controlled during the production process, so the cooked drained rice particles are fuller and fuller. elasticity. However, the special production process of draining rice makes the function of draining rice pots currently on the market very single. It can only be used for making drained rice, but cannot realize multiple functions such as porridge cooking and stewing rice, and cannot meet people's daily use needs. .

In addition, the rice draining pot currently on the market mainly adjusts the air pressure of the inner pot or the outer pot to form a pressure difference that promotes water flow, so the arrangement of the air passages has become the main technical point of the draining rice pot. In order to simplify the arrangement of the air passages, some draining rice cookers adopt the method of adjusting the pressure of the inner pot to form a pressure difference. Over-gelatinization of rice, that is, the degree of gelatinization of rice grains is difficult to precisely control. At present, the drained rice cooker based on the pressure regulation of the outer pot transmits or extracts air through the air holes on the side wall of the outer pot. It is difficult to locate between the airway and the airway, and it is easy to cause leakage. In addition, the air passage structure also causes inconvenience in cleaning the outer pot and the seal.

In order to overcome at least one deficiency of the prior art, the present invention provides a cooking utensil.

In order to achieve the above object, the present invention provides a cooking utensil, which includes a pot body, an outer pot, a draining and steaming component, a pressure regulating component, a pot cover and a heating element. The outer pot is arranged in the pot body and has air guide holes on the edge of the outer pot. The steaming assembly includes an inner pot and an inner pot sealing ring. The inner pot is detachably arranged in the outer pot and forms a pressure chamber with the outer pot. The inner pot sealing ring includes a sealing part and a connecting part. The sealing part is located at the diameter of the air guide hole. To the outside and pressed tightly between the edge of the inner pot and the edge of the outer pot, the connecting part leans against the outer wall of the inner pot to tighten the sealing ring of the inner pot, and a communication air hole is formed between the sealing ring of the inner pot and the outer pot opposite to it And the air guide channel of the pressure chamber. The pressure regulating component is arranged on the pot body and is sealed and communicated with the air guide hole. The pressure regulating component is used to adjust the pressure in the pressure chamber; or when the draining and steaming component is removed, it can transmit gas to the outer pot to reduce the temperature of the liquid in the outer pot. The pot lid is sealed and closed to the inner pot through the pot cover sealing ring; or the pot cover can be sealed and closed to the outer pot through the pot cover sealing ring when the draining and steaming assembly is removed. The heating element is arranged on the pot body to heat the outer pot.

According to an embodiment of the present invention, the connecting portion includes a radial connecting portion and an axial connecting portion, the radial connecting portion is connected to the sealing portion and is closely attached to the bottom of the rim of the inner pot, the axial connecting portion extends toward the bottom of the pot body and Against the outer wall of the inner pot; the air guide channel includes a first air guide channel and a second air guide channel; wherein, the first air guide channel communicating with the air guide hole is formed between the radial connection part and the edge of the outer pot, and the axial connection A second air guide channel communicating with the pressure chamber is formed between the inner part and the outer pot body.

According to an embodiment of the present invention, the pot body has a pot body air passage extending to its upper end surface, the bottom end of the pot body air passage is connected to the pressure regulating assembly, and the top end of the pot body is sealed and connected to the outer pot through the axial air hole on the outer pot sealing ring. Along the air guide hole.

According to an embodiment of the present invention, the sealing ring of the outer pot includes an annular ring body and two annular sealing petals located on the upper surface of the annular ring body. The annular ring body has axial air holes, and the edge of the outer pot rests against the two annular sealing flaps. An annular air channel communicating with the axial air hole and the air guide hole and penetrating in the circumferential direction is formed between the outer pot edge, the two annular sealing petals and the upper surface of the annular ring body.

According to an embodiment of the present invention, the cooking utensil further includes two water level electrodes detachably connected to the pot cover, the center-to-center distance between the two water level electrodes is greater than or equal to 5 mm, and the end of the water level electrodes is connected to the inner bottom wall of the inner pot. The maximum distance is greater than or equal to 30 mm.

According to an embodiment of the present invention, the bottom of the inner pot includes a raised portion and an outer peripheral portion, the raised portion protrudes upwards relative to the outer peripheral portion and has a plurality of radial drainage grooves on the raised portion, and a plurality of circumferential drains are arranged on the outer peripheral portion at intervals. To the drainer.

According to an embodiment of the present invention, after chamfering the surrounding walls of the radial drainage groove and/or the circumferential drainage groove, an inclined guide wall whose thickness gradually decreases toward the center of the drainage groove is formed, and the thickness of the end of the inclined guide wall is equal to 1/2 of the thickness of the initial end. 1/4.

The present invention also provides another cooking utensil, which includes a pot body, an outer pot, a draining and steaming component, a pot cover, a pressure regulating component and a heating element. The draining and steaming assembly includes an inner pot and an inner pot sealing ring. The inner pot is detachably arranged on the outer pot and forms a pressure chamber with the outer pot. The inner pot has air guide holes along the edge of the inner pot. The inner pot sealing ring includes a sealing part and a connecting part , the sealing part is located on the radially outer side of the air guide hole and is pressed tightly between the edge of the inner pot and the edge of the outer pot. The connecting part is against the outer wall of the inner pot to tighten the sealing ring of the inner pot. An air guide channel connecting the air guide hole and the pressure chamber is formed between the inner pots; or, the sealing ring of the inner pot has a through hole, and the through hole forms an air guide channel connecting the air guide hole and the pressure chamber. The pot cover includes a cover body and a pot cover air channel. The cover body is sealed and closed to the inner pot through the cover sealing ring and the cover air channel is connected to the air guide hole; or when the draining and steaming component is removed, the pot cover can be sealed by the pot cover sealing ring Close to the outer pot and make the air passage of the pot cover communicate with the outer pot. The pressure regulating component is arranged on the pot body and communicates with the air channel of the pot cover. The pressure regulating component is used to adjust the pressure in the pressure chamber; or when the draining and steaming component is removed, it can transmit gas to the outer pot to reduce the temperature of the liquid in the outer pot. The heating element is arranged at the bottom of the outer pot.

According to an embodiment of the present invention, the connecting part includes a radial connecting part and an axial connecting part, the radial connecting part is connected to the sealing part, and the axial connecting part extends toward the bottom of the pot body; and lean against the outer wall of the inner pot to tighten the sealing ring of the inner pot; the air guide channel includes a first air guide channel and a second air guide channel; wherein, the radial connection part and the edge of the inner pot form a connected air guide The first air guide channel of the hole, the second air guide channel communicating with the pressure chamber is formed between the inner wall of the unprotruded axial connection part and the outer wall of the inner pot.

According to an embodiment of the present invention, the radial connecting portion is recessed relative to the sealing portion so that the first air guide passage passes through in the circumferential direction, and the inner peripheral wall of the axial connecting portion has a plurality of radial protrusions that abut against the outer wall of the inner pot. Ribs, a plurality of second air guide channels are formed between the inner wall of the unprotruded axial connection part between adjacent convex ribs and the outer wall of the inner pot.

According to an embodiment of the present invention, the air channel of the pot lid includes an air channel connector and a flexible air nozzle connected to the end of the air channel connector. The mouth is sealed and connected to the air guide hole.

According to an embodiment of the present invention, the sealing ring of the pot lid includes an annular main body, inner sealing lips and outer sealing lips located on both sides of the annular main body, and the airway joint is connected to the annular main body; when the lid is closed on the inner pot, The inner sealing lip and the outer sealing lip abut against the rim of the inner pot to seal the air guide hole, and the inner sealing lip, the outer sealing lip and the inner pot edge form a circumferentially penetrating annular sealing cavity, and the annular sealing cavity communicates with the airway joint and the air guiding hole.

According to an embodiment of the present invention, the cooking utensil also includes a pressure cooker cover detachably arranged with the pot body, the pressure cooker cover has cover teeth, and the pot body has pot teeth matching the cover teeth; When the lid is removed and the lid is opened, it is closed to the body of the pot, and a sealed pressure chamber is formed between the lid of the pressure cooker and the outer pot.

To sum up, in the cooking utensil provided by the present invention, the draining and steaming component is housed in the outer pot as a whole, and the whole cooking utensil is integrated after the lid is closed, and the structure is very simple. The tightening method based on the inner pot edge, the outer pot edge, and the inner pot sealing ring on the outer wall of the inner pot not only has good airtightness, is convenient to install, but also effectively shortens the distance between the outer pot and the pot cover, which is convenient for moving. The pot provides the conditions except that the pot cover is sealed after draining and steaming the assembly. Combined with the detachable structure of the draining and steaming component and the distribution of air passages, the cooking utensil provided by the present invention can have multiple cooking modes; when the draining and steaming component is placed, it can be used to make drained rice, and the draining After steaming the components, it can be used as a traditional electric rice cooker to stew rice or cook porridge, realizing one machine with multiple functions. In addition, the air guide holes distributed on the edge of the pot also greatly simplify the positioning connection between it and the pressure regulating component, and the installation of the inner pot and the outer pot after cleaning is very convenient.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are described below in detail with accompanying drawings.

1: pot body

100: air hole

11: Pot body air passage

12: pot teeth

2: outer pot

20: Pressure chamber

21: Edge of outer pot

3: Drain and steam components

31: inner pot

311: Edge of inner pot

312: outer wall of inner pot

313: Raised part

3130: Radial Drainer

314: peripheral part

3140: Circumferential drainage tank

315: inclined guide wall

32:Sealing ring of inner pot

3201: The first air guide channel

3202: The second air guide channel

321: sealing part

322: connection part

3221: radial connection

3222: Axial connection

3223: convex rib

33: energy gathering cover

331: Gathering Cover

332: energy-gathering inner cover

333: Energy-gathering cover sealing ring

4: Regulator components

41: air pump

42: airway

5: Pot cover

51: cover body

52: Pot lid air passage

521: airway connector

522: Flexible air nozzle

53,53': Pot lid sealing ring

530': Annular seal cavity

531': main body

532': Inner sealing lip

533': Outer sealing lip

534': Assembly Department

6: heating element

7: Outer pot sealing ring

70: axial air hole

71: Ring body

710: Ring airway

72: Annular sealing valve

8: water level electrode

9: Pressure cooker lid

91: Pressure cooker lid sealing ring

D1: center distance

D2: distance

D3: diameter

D4: inner diameter

T1: wall thickness

T2: Thickness

FIG. 1 is a schematic structural diagram of a cooking appliance provided by Embodiment 1 of the present invention.

FIG. 2 is a structural schematic diagram of another viewing angle in FIG. 1 .

FIG. 3 is a schematic cross-sectional view along line A-A in FIG. 2 .

FIG. 4 is an enlarged schematic diagram of point B in FIG. 3 .

FIG. 5 is an enlarged schematic diagram of point C in FIG. 3 .

Fig. 6 shows a schematic structural view of the sealing ring of the inner pot.

Fig. 7 is an exploded schematic diagram of Fig. 1, wherein the energy gathering cover is accommodated in the outer pot without being separated.

Figure 8 shows a schematic structural view of a pot body and a pot cover.

FIG. 9 is an enlarged schematic diagram at point D in FIG. 8 .

Figure 10 shows a schematic structural view of the sealing ring of the outer pot.

Figure 11 shows a schematic structural view of the outer pot.

Figures 12 to 14 are schematic structural views of the inner pot.

FIG. 15 is an enlarged schematic view at point E in FIG. 13 .

FIG. 16 is an enlarged schematic view at point F in FIG. 14 .

Fig. 17 is an exploded schematic diagram of the energy-gathering inner cover, the outer pot and the heating element.

FIG. 18 is a schematic partial cross-sectional view of the cooking appliance provided by Embodiment 2 of the present invention through two water level electrodes.

FIG. 19 is a schematic cross-sectional view of FIG. 18 .

FIG. 20 is an enlarged schematic view at G in FIG. 19 .

FIG. 21 is an enlarged schematic view at H in FIG. 19 .

Fig. 22 is a schematic structural view of the sealing ring of the inner pot in Fig. 18 .

FIG. 23 is an exploded schematic view of FIG. 18 .

Fig. 24 shows the exploded schematic view of the pot cover, the inner pot and the sealing ring of the inner pot.

FIG. 25 is a schematic structural view of the cooking utensil provided by Embodiment 3 of the present invention.

FIG. 26 is an enlarged schematic view of position I in FIG. 25 .

Fig. 27 is an exploded schematic diagram of Fig. 25, wherein the outer pot and the energy-gathering cover are accommodated in the pot body without separation.

Fig. 28 is a schematic structural view of the cooking utensil provided by Embodiment 4 of the present invention.

FIG. 29 is an exploded schematic diagram of FIG. 28 .

Embodiment one

The existing drained rice cooker has a single function, and usually can only be used to make drained rice and cannot realize other cooking functions. Moreover, the existing drained rice cooker also has problems such as difficult positioning, unsatisfactory sealing effect and difficult cleaning in the distribution of air passages.

In view of this, the present embodiment provides a cooking appliance that can realize multiple cooking modes and is very convenient for users to use. As shown in FIGS. 1 to 17 , the cooking appliance provided by this embodiment includes a pot body 1 , an outer pot 2 , a draining and steaming component 3 , a pressure regulating component 4 , a pot cover 5 and a heating element 6 . The outer pot 2 is arranged in the pot body 1 and has an air guide hole 100 on the edge 21 of the outer pot. The draining and steaming assembly 3 includes an inner pot 31 and an inner pot sealing ring 32, and the inner pot 31 It is detachably arranged in the outer pot 2 and forms a pressure chamber 20 with the outer pot 2. The inner pot sealing ring 32 includes a sealing part 321 and a connecting part 322. The sealing part 321 is located on the radially outer side of the air guide hole 100 and is pressed against the Between the edge 311 of the inner pot and the edge 21 of the outer pot, the connecting portion 322 abuts against the outer wall 312 of the inner pot to tighten the sealing ring 32 of the inner pot. An air guide channel communicating with the air guide hole 100 and the pressure chamber 20 is formed between the inner pot sealing ring 32 and the outer pot 2 opposite thereto. The pressure regulating assembly 4 is arranged on the pot body 1 and is sealed and communicated with the air guide hole 100. The pressure regulating assembly 4 is used to adjust the pressure in the pressure chamber 20; The temperature of the liquid in pot 2. The pot cover 5 is sealed and closed to the inner pot 31 through the pot cover sealing ring 53; The heating element 6 is arranged on the pot body 1 to heat the outer pot 2 .

In the cooking utensil provided in this embodiment, the detachable structure of the draining and steaming assembly 3 enables the cooking utensil to be used to make low-sugar drained rice, and can also be used as a traditional electric rice cooker when the draining and steaming assembly 3 is removed to stew rice or Cook porridge. When it works in the traditional electric rice cooker mode, it is required that the pot cover 5 can be sealed and closed on the outer pot 2 by the pot cover sealing ring 53 . However, due to the sealed pressure chamber 20 to be formed between the inner pot 31 and the outer pot 2 under the cooking mode of draining rice, the inner pot sealing ring 32 needs to be accommodated between the outer pot 2 and the pot cover 5 in addition to the edge 311 of the inner pot. That is, the thickness of the inner pot edge 311, the thickness of the inner pot sealing ring 32 and the thickness of the structure that tightens the inner pot sealing ring 32 determine the sealing distance between the pot cover 5 and the outer pot 2. If the sealing distance between the two is too large, the pot cover 5 cannot seal the outer pot 2 after the draining and steaming assembly 3 is removed, so that it cannot work normally in the traditional rice cooker mode.

In existing household electrical appliances, the sealing ring is mainly fixed by a buckle, and then radially tightened by an annular groove. The setting of the buckle and the ring groove will inevitably increase the thickness of the edge of the inner pot, thereby increasing the sealing distance between the pot cover and the outer pot; and if the buckle structure and the ring groove are arranged on the edge of the outer pot, it will affect the thickness of the pot. Tightness between lid and outer pot. In addition, since the inner pot and the outer pot are usually made of hardware materials, glass or ceramics, it is very difficult to form buckles and annular grooves. Furthermore, for this embodiment, the arrangement of the sealing ring of the inner pot also needs to take into account the distribution of air passages.

In order to solve this contradictory problem, in the cooking utensil provided in this embodiment, as shown in Fig. 3 to Fig. 6 , the sealing ring 32 of the inner pot is fixed without a buckle, and the sealing part 321 is pressed tightly against the inner pot 31 based on the gravity of the inner pot 31. Between the edge 311 of the pot and the edge 21 of the outer pot, self-fixation is realized while sealing the inner pot 31 and the outer pot 2 . At the same time, the connecting portion 322 of the inner pot sealing ring 32 abuts against the outer wall 312 of the inner pot, thereby tightening the inner pot sealing ring 32 in the radial direction. The fixing method of the inner pot sealing ring without buckle and annular groove provided by this embodiment makes the sealing distance between the pot cover 5 and the outer pot 2 only depend on the thickness of the inner pot rim 311 and the thickness of the sealing part 321 without considering the inner pot The thickness of the fixed structure of the pot sealing ring greatly shortens the distance between the pot cover 5 and the outer pot 2, which provides conditions for the cooking utensil to work in the traditional rice cooker mode. Further, the orderly placement of the pot body 1, the outer pot 2, and the inner pot 31 makes the cooking utensil provided in this embodiment an integrated structure, which is not only convenient to use but also has a good thermal insulation performance, so the thickness can be adopted. It is made of thinner single-layer material, thereby further shortening the sealing distance between the pot cover 5 and the outer pot 2, and ensuring the sealing effect between the two.

On the distribution of the air passage, since the sealing portion 321 is positioned at the outside of the air guide hole 100 and the inner pot sealing ring 32 extends along the lower surface of the inner pot along the 311, there is a gap between the inner pot sealing ring 32 and the outer pot 2 opposite to it. An air guide channel communicating with the air guide hole 100 and the pressure chamber 20 is formed, so as to realize the communication of the air passage. Specifically, the connecting portion 322 includes a radial connecting portion 3221 and an axial connecting portion 3222 , the radial connecting portion 3221 is connected to the sealing portion 321 and is closely attached to the bottom of the rim 311 of the inner pot. The axial connecting portion 3222 extends toward the bottom of the pot body 1 and abuts against the outer wall 312 of the inner pot. The air guide channel includes a first air guide channel 3201 and a second air guide channel 3202; wherein, the first air guide channel 3201 communicating with the air guide hole 100 is formed between the radial connecting portion 3221 and the outer pot edge 21, and the axial connecting portion The second air guide channel 3202 communicating with the pressure chamber 20 is formed between the 3222 and the outer pot body 22 .

To sum up, the sealing ring 32 of the inner pot provided in this embodiment shortens the sealing distance between the pot cover 5 and the outer pot 2 and effectively realizes the communication of the air channel between the air guide hole 100 and the pressure chamber 20 . Further, based on the inner pot outer wall 312 and inner pot along the 311 guide, the radial connection part 3221 and the axial connection The joints 3222 are bent at a large angle, and the sealing ring 32 of the inner pot is in an open structure, which is more convenient to clean than the double-lip sealing rings in existing household appliances.

For the pressure regulating assembly 4, under the cooking mode of draining rice, it transmits or extracts air to the pressure chamber 20 through the air guide hole 100 and the air guide channel to change the pressure in the pressure chamber 20, thereby impelling the water flow between the outer pot 2 and the inner pot. Flow between the pots 31, and then realize soaking rice and draining rice. While in the porridge cooking mode of the traditional electric cooker, the pressure regulating assembly 4 inputs cold air to the outer pot 2 through the air guide hole 100 to reduce the temperature of the rice soup in the outer pot, that is, the temperature of the rice soup is controlled within a certain range so that the rice grains can be stored in the rice cooker. In this temperature range, the essence is gradually gelatinized and released, simulating the slow cooking mode of wood fire.

In this embodiment, as shown in FIG. 3 , FIG. 4 , FIG. 7 and FIG. 8 , the pressure regulating assembly 4 includes an air pump 41 and a flexible air guide tube 42 . The pot body 1 has a pot body air passage 11 extending to its upper end surface. The bottom end of the pot body air passage 11 is connected to a flexible air guide pipe 42, and its top end is sealed and connected to the outer pot edge through the axial air hole 70 on the outer pot sealing ring 7. The upper air guide hole 100. Since the pot body air channel 11 is stable and unchanged, it is only necessary to align the air guide hole 100 with the axial air hole 70 on the outer pot sealing ring 7 when the outer pot 2 is cleaned and assembled, and the positioning of the air guide hole 100 is It can be observed by the naked eye, so the positioning is very convenient and accurate. However, the present invention does not make any limitation thereto. In other embodiments, it is only necessary to open a channel on the pot body for the air guide tube of the pressure regulating component to pass through, and the air guide tube is directly connected to the air guide hole.

In order to further simplify the assembly of the outer pot 2, in this embodiment, as shown in Fig. 4, Fig. 5 and Fig. 10, the outer pot sealing ring 7 is set to include an annular ring body 71 and two annular rings on the upper surface of the annular ring body 71. The sealing flap 72, the annular ring body 71 has an axial air hole 70, the outer pot edge 21 is against the two annular sealing flaps 72, the outer pot edge 21, the two annular sealing flaps 72 and the upper surface of the annular ring body 71 An annular air passage 710 communicating with the axial air hole 70 and penetrating in the circumferential direction is formed between them. Based on the circumferential penetration of the annular air passage 710, the air guide holes 100 on the outer pot edge 21 and the axial air holes 70 can be connected without positioning, which greatly facilitates the assembly of the outer pot 2 after cleaning. However, the present invention does not make any limitation thereto. In other embodiments, the air channel of the pot body can also be connected to the air guide hole through the flexible air nozzle, and at this time, there is no need to set the outer pot sealing ring.

As mentioned above, based on the detachable structure of the draining and steaming assembly 3, the sealing ring 32 of the inner pot and the distribution of the air passage, the cooking utensil provided by this embodiment can have multiple cooking modes, so that one machine can be used for multiple purposes. Various cooking modes will be introduced below with reference to FIGS. 1 to 17 .

The first cooking mode is the rice draining mode. At this time, the draining and steaming assembly 3 is placed in the outer pot 2 and the draining and steaming assembly 3 also includes an energy-gathering cover 33 that is sealed and connected to the bottom of the inner pot 31. The bottom of the inner pot 31 has a communication The draining tank of energy-gathering cover 33. There is a water flow channel between the bottom of the energy gathering cover 33 and the inner bottom wall of the outer pot 2, and the water in the outer pot 2 submerges the water flow channel. The pot cover 5 is tightly closed on the inner pot 31 . The pressure regulating assembly 4 transmits gas into the pressure chamber 20 through the pot body air channel 11 , the axial air hole 70 , the annular air channel 710 , the air guide hole 100 , the first air guide channel 3201 and the second air guide channel 3202 . The air pressure in the pressure chamber 20 increases, and the water in the outer pot 2 enters the energy-gathering cover 33 through the water flow channel, and rises and enters the inner pot 31 through the draining tank to soak rice. After the soaked rice meets the requirements, the pressure regulating assembly 4 reduces the pressure in the pressure chamber 20, and the water in the inner pot 31 falls back to the outer pot 2 through the draining tank and the energy-gathering cover 33 to realize draining. Open heating element 6 afterwards, heat the water in the energy-gathering cover 33 to produce steam to steam the rice layer in the inner pot 31, and steam is discharged through the steam port on the pot cover 5. During the steaming process, the pressure in the pressure chamber 20 can be adjusted again or several times so that the water in the outer pot 2 enters the inner pot 31 to replenish water for a short time; then drain the water. After draining, the steam continues to heat the rice layer until the rice is cooked.

In this embodiment, the energy gathering cover 33 includes an energy gathering outer cover 331 , an energy gathering inner cover 332 and an energy gathering cover sealing ring 333 . There is a first water flow channel between the energy-gathering inner cover 332 and the inner bottom wall of the outer pot 2, and there is a second water flow channel communicating with the outer pot 2 between the energy-gathering outer cover 331 and the energy-gathering inner cover 332. The energy-gathering inner cover 332 The top has a steam hole communicating with the drainage groove. The inner pot 31 is connected to the energy gathering outer cover 331 through the energy gathering cover sealing ring 333 . The heating element 6 heats the water in the energy-gathering inner cover 332 to quickly generate steam, and the steam enters the inner pot 31 through the steam hole on the top of the energy-gathering inner cover 332 and the drain groove at the bottom of the inner pot 31 .

In this embodiment, the heating element 6 is an electromagnetic coil, and the outer pot 2 is made of magnetically conductive metal material; the diameter of the heating element 6 is close to the inner diameter of the energy-collecting inner cover 332 . However, the present invention does not make any limitation thereto. In other embodiments, the diameter D3 of the electromagnetic coil can also be set to be smaller than the inner diameter D4 of the energy-gathering inner cover 332 2-10mm so that the heat is concentrated on the energy-gathering inner cover 332 during heating so as to quickly generate steam (as shown in the second embodiment). Alternatively, the heating element can also be set to include an inner electromagnetic coil and an outer electromagnetic coil. In the rice cooking mode, the inner electromagnetic coil is used to heat the energy-gathering inner cover; while in the traditional rice cooker mode, the inner and outer electromagnetic coils work together to improve the uniformity of heating. and efficiency.

In this embodiment, the inner pot 31 transmits water flow and steam through a plurality of drainage grooves at the bottom. Because the width of the draining groove is less than the short diameter of the rice grains, about 1.5 mm; so the rice layer can be directly placed on the bottom of the inner pot 31, and the bottom of the inner pot 31 can be used as a steaming grid. However, the present invention does not make any limitation thereto. In other embodiments, a plurality of larger water holes can also be provided at the bottom of the inner pot to realize water flow and steam transmission, and the rice layer is placed on the steaming grid in the inner pot.

In this embodiment, as shown in Figures 12 to 16, the bottom of the inner pot includes a raised portion 313 and an outer peripheral portion 314, the raised portion 313 is raised upward relative to the outer peripheral portion 314, and the raised portion 313 has a plurality of radial In the drainage groove 3130, a plurality of circumferential drainage grooves 3140 are distributed on the outer peripheral portion 314 at intervals. The arrangement of the radial drainage groove 3130 and the circumferential drainage groove 3140 increases the area of water and steam, so that water flow and steam can enter the inner pot 31 more quickly or water can be drained from the inner pot 31 faster. Especially in the draining stage, the setting of the radial draining groove 3130 and the circumferential draining groove 3140 can ensure that all areas at the bottom of the inner pot 31 can be completely drained, and avoid water accumulation in some areas that will cause the rice at the bottom layer to be wet and excessively gelatinized.

In this embodiment, the inner pot 31 is integrally formed after integral stretching. The thickness of the bottom wall and side wall of the inner pot 31 is about 2 mm, which is close to the diameter of the rice, so that the rice is easily stuck in the draining tank and difficult to clean. To solve this problem, as shown in FIG. 15 and FIG. 16 , the outer peripheral walls of the radial drainage groove 3130 and the circumferential drainage groove 3140 are chamfered to form an inclined guide wall 315 whose thickness gradually decreases towards the center. This setting will enable the rice grains stuck in the draining tank to be pushed out with a push of the brush during cleaning, which is very convenient for users to clean. Preferably, the thickness at the end of the inclined guide wall 315 is set to be equal to 1/4 of the thickness at the beginning. For the inner pot 31 whose wall thickness T1 is 2 mm, the thickness T2 at the end of the inclined guide wall 315 is 0.5 mm. However, the present invention does not make any limitation thereto.

The second cooking mode is the rice cooking mode of a traditional electric rice cooker. In this cooking mode, the draining and steaming assembly 3 is removed and the rice layer is placed in the outer pot 2 , and the pot cover 5 is hermetically closed on the outer pot 2 . The heating element 6 heats the water and the rice layer in the outer pot 2 to cook the rice.

The third cooking mode is porridge cooking mode. In this cooking mode, the draining and steaming assembly 3 is removed and the rice layer is placed in the outer pot 2 . The pot cover 5 is sealed and closed to the outer pot 2, the heating element 6 heats the water and rice layer in the outer pot 2, and the pressure regulating component 4 is opened in stages after the temperature of the rice soup reaches the set requirement. The pressure regulating assembly 4 inputs low-temperature cold air into the outer pot 2 through the pot body air passage 11, the axial air hole 70, the annular air passage 710 and the air guide hole 100 to reduce the temperature of the rice soup in the outer pot 2, and precisely control the rice soup while preventing it from overflowing. Gelatinization temperature and gelatinization time of rice grains. This setting enables the heating element 6 of the cooking appliance to use high-power heating in the porridge cooking mode to simulate traditional firewood porridge, which effectively avoids the bubbles of rice soup produced by high-power continuous heating from the pot cover 5 while improving the taste of rice porridge. Steam vent overflows.

Existing kitchen appliances mostly use a single electrode for water level detection to prevent dry heating. However, in this embodiment, since the rice layer absorbs water and swells after soaking the rice, it will also expand again during the steaming process; if a single electrode is used for detection, the expanded rice layer may also swell with the electrode Contact and conduct electricity, resulting in misjudgment of the electrode.

In view of this, this embodiment provides a detection method based on the double water level electrodes 8 , and the water level detection is realized by detecting the resistance between the double water level electrodes 8 . Although the resistance value of the rice grains will decrease after absorbing water and swelling, within the same conductive distance, the resistance between the expanded rice grains will still be greater than the resistance of the water, and the resistance difference between the two will vary with the center between the two water level electrodes 8. The larger the distance D1 is, the more obvious it is. Therefore, in this embodiment, by controlling the center-to-center distance D1 between the two water level electrodes 8 , the accurate detection of the two different contact states of the double water level electrodes 8 in contact with water and the two water level electrodes in contact with the rice layer is realized. In addition, considering that an excessively large center-to-center distance D1 will also make it difficult to form a discrimination signal between the two water level electrodes 8 . Therefore, preferably, the center distance D1 between the two water level electrodes 8 is set to be greater than or equal to 5 mm and less than or equal to 200 mm.

Further, in the process of making drained rice, it is required that the water should completely submerge the rice layer when soaking the rice. To meet this condition, the distance D2 from the end of each water level electrode 8 to the unprotruded outer peripheral portion 314 inner bottom wall of the inner pot 31 is greater than or equal to 30 millimeters (distance D2 can be seen from Fig. 18 of embodiment two out). When the depth of the inner pot 31 is determined, the greater the distance D2, the higher the water level in the inner pot 31 when soaking rice.

Based on the accurate discrimination of the double water level electrodes 8, the control board positioned in the pot cover 5 will control the working state of the air pump (pressure regulating assembly) by the water level detection signal. Specifically, when soaking rice, if it is detected that the water level has touched the double water level electrodes 8, the control board outputs a stop signal or an intermittent working signal to the air pump to maintain the water level of the inner pot 31. In addition, the water level electrode 8 installed on the pot cover 5 also enables all the electric control elements of the cooking utensil provided in this embodiment to be arranged in the pot cover 5, which not only simplifies the circuit wiring, but also prevents the liquid in the pot from effect on circuit components.

Embodiment two

This embodiment is basically the same as Embodiment 1 and its variations, the difference lies in the composition and structure of the airway.

As shown in FIGS. 18 to 24 , the cooking appliance provided by this embodiment includes a pot body 1 , an outer pot 2 , a draining and steaming component 3 , a pot cover 5 , a pressure regulating component 4 and a heating element 6 . The draining and steaming assembly 3 includes an inner pot 31 and an inner pot sealing ring 32. The inner pot 31 is detachably arranged on the outer pot 2 and forms a pressure chamber 20 with the outer pot 2. The inner pot edge 311 has an air guide hole 100. The pot sealing ring 32 includes a sealing part 321 and a connecting part 322. The sealing part 321 is located on the radially outer side of the air guide hole 100 and is pressed between the edge 311 of the inner pot and the edge 21 of the outer pot. The connecting part 322 is against the inner pot. The outer wall 312 is used to tighten the sealing ring 32 of the inner pot, and an air guiding channel communicating with the air guiding hole 100 and the pressure chamber 20 is formed between the inner pot sealing ring 32 and the inner pot 31 opposite to it. The pot cover 5 includes a cover body 51 and a pot cover air channel 52. The cover body 51 is sealed and closed to the inner pot 31 by the pot cover sealing ring 53 and the pot cover air channel 52 is connected to the air guide hole 100; or when the draining and steaming assembly 3 is removed, the pot The cover 5 can be sealed and closed to the outer pot 2 through the pot cover sealing ring 53 and makes the pot cover air channel 52 communicate with the outer pot 2 . The pressure regulating assembly 4 is arranged on the pot body 1 and communicates with the lid air passage 52, the pressure regulating assembly 4 It is used to adjust the pressure in the pressure chamber 20 ; or when the draining assembly 3 is removed, it can supply gas to the outer pot 2 to lower the temperature of the liquid in the outer pot 2 . The heating element 6 is arranged at the bottom of the outer pot 2 .

In this embodiment, the air channel 52 of the lid includes an air channel connector 521 and a flexible air nozzle 522 detachably connected to the end of the air channel connector 521 . After the pot lid 5 is closed, the airway connector 521 is sealed and connected to the air guide hole 100 through the flexible air nozzle 522 . In this structure, the user can observe the air guide hole 100 and the flexible air nozzle 522 by opening the pot cover 5, and can quickly and accurately place the inner pot 31 in combination with the positioning mark (not shown in the figure) on the edge of the pot body 1 so that The air guide hole 100 and the flexible air nozzle 522 are butted in a sealed manner. In addition, this setting also greatly facilitates the disassembly, cleaning and replacement of the flexible air nozzle 522 .

In this embodiment, the pressure regulating assembly 4 includes an air pump 41 and an air guide tube 42 for air delivery and air extraction. The air pump 41 is accommodated in the pot body 1 and is close to the pot cover 5 . One end of the air guide tube 42 is connected to the air pump 41 , and the other end is connected to the airway joint 521 on the pot cover 5 .

As for the sealing ring of the inner pot, the same as in the first embodiment, the sealing ring 32 of the inner pot is also assembled between the edge 311 of the inner pot, the edge 21 of the outer pot and the outer wall 312 of the inner pot in a fixed manner without buckles and without annular grooves. , thereby greatly shortening the sealing distance between the pot cover 5 and the outer pot 2, which provides conditions for the cooking appliance to work in the traditional rice cooker mode. Specifically, as shown in Figure 20 and Figure 21, the sealing part 321 is pressed tightly between the edge 311 of the inner pot and the edge 21 of the outer pot based on the gravity of the inner pot 31, while sealing the inner pot 31 and the outer pot 2 Realize self-fixation; while the connecting portion 322 leans against the outer wall 312 of the inner pot and tightens the sealing ring 32 of the inner pot radially.

In terms of air passage distribution, the connecting portion 322 also includes a radial connecting portion 3221 and an axial connecting portion 3222 , the radial connecting portion 3221 is connected to the sealing portion 321 , and the axial connecting portion 3222 extends toward the bottom of the pot body 1 . As shown in FIGS. 21 and 22 , part of the inner peripheral wall of the axial connection portion 3222 protrudes radially and abuts against the outer wall 312 of the inner pot to tighten the sealing ring 32 of the inner pot. The air guiding channel includes a first air guiding channel 3201 and a second air guiding channel 3202 . Wherein, the first connecting air hole 100 is formed between the radial connecting portion 3221 and the inner pot edge 311. An air guide channel 3201 , a second air guide channel 3202 communicating with the pressure chamber 20 is formed between the inner wall of the unprotruded axial connecting portion 3222 and the outer wall 312 of the inner pot.

As shown in Figure 21 and Figure 22, the peripheral wall of the axial connection part 3222 has a plurality of ribs 3223 that protrude radially and abut against the outer wall of the inner pot 31, and the unprotruded axial connections between adjacent ribs 3223 A second air guide channel 3202 is formed between the portion 3222 and the outer wall 312 of the inner pot. The plurality of second air guiding channels 3202 communicate with the circumferentially penetrating first air guiding channels 3201 . However, the present invention does not make any limitation thereto. In other embodiments, a partial area of the axial connection portion may also be provided with continuous radial protrusions, and the non-protruded area is disposed opposite to the air guide hole.

In this embodiment, the first gas guiding channel 3201 divides the gas entering from the gas guiding hole 100 to a plurality of second gas guiding channels 3202; , uniformly change the pressure of all areas in the pressure chamber 20, avoid problems such as poor water flow caused by uneven pressure differences in the pressure chamber 20 and leakage caused by excessive pressure in some areas of the inner pot sealing ring 32. The overall uniform pressure makes the sealing ring 32 of the inner pot adopt the sealing part 321 with a smaller thickness to realize the effective sealing between the inner pot 31 and the outer pot 2 . The reduction of the thickness of the sealing portion 321 can further reduce the sealing distance between the pot cover 5 and the edge 21 of the outer pot, and improve the sealing performance in the working mode of the traditional electric rice cooker.

This embodiment is described by taking the second air guide channel formed between the axial connection portion 3222 of the sealing ring of the inner pot and the outer wall 312 of the inner pot as an example. However, the present invention does not make any limitation thereto. In other embodiments, it is also possible to set all areas of the axial connection part against the outer wall of the inner pot, and the sealing ring of the inner pot has a through hole opposite to the air guide hole, and the through hole forms a guide connecting the air guide hole and the pressure chamber. gas channel.

Similarly, compared with the double-lip sealing ring in the existing household appliances, in the inner pot sealing ring provided by this embodiment, the large-angle bending between the radial connecting portion 3221 and the axial connecting portion 3222 makes the inner pot sealing ring 32 appear Open structure, and the inner pot sealing ring 32 also does not have small slots, so it is very convenient to clean.

Same as the first embodiment, the cooking utensil provided in this example also has multiple cooking modes.

The first cooking method is the making of drained rice. At this time, the draining and steaming assembly 3 is placed in the outer pot 2 and the draining and steaming assembly 3 also includes an energy-gathering cover 33 that is sealed and connected to the bottom of the inner pot 31. The bottom of the inner pot 31 has a communication The draining tank of energy-gathering cover 33. There is a water flow channel between the bottom of the energy gathering cover 33 and the inner bottom wall of the outer pot 2, and the water in the outer pot 2 submerges the water flow channel. The pot cover 5 is tightly closed on the inner pot 31 . The air pump 41 delivers air into the pressure chamber 20 through the air guide tube 42 , the airway joint 521 , the flexible air nozzle 522 , the air guide hole 100 , the first air guide channel 3201 and the second air guide channel 3202 . The air pressure in the pressure chamber 20 increases, and the water in the outer pot 2 enters the energy-gathering cover 33 through the water flow channel, and enters the inner pot 31 through the water draining tank to soak rice. After the soaked rice meets the requirements, the air pump 41 reduces the pressure in the pressure chamber 20, and the water in the inner pot 31 falls back to the outer pot 2 through the drain tank and the energy-gathering cover 33 to realize draining. Open heating element 6 afterwards, heat the water in the energy-gathering cover 33 and produce the rice layer in steaming inner pot 31, steam is discharged through the steam port on the pot cover 5. During the steaming process, the pressure in the pressure chamber 20 can be adjusted again or several times so that the water in the outer pot 2 enters the inner pot 31 for short-term replenishment; then drain. After draining, the steam continues to heat the rice layer until the rice is cooked.

The second cooking mode is the rice cooking mode of a traditional electric rice cooker. In this cooking mode, the draining and steaming assembly 3 is removed and the rice layer is placed in the outer pot 2 , and the pot cover 5 is hermetically closed on the outer pot 2 . The heating element 6 heats the water and the rice layer in the outer pot 2 to cook the rice.

The third cooking mode is porridge cooking mode. In this cooking mode, the draining and steaming assembly 3 is removed and the rice layer is placed in the outer pot 2 . The pot cover 5 is sealed and closed to the outer pot 2, the heating element 6 heats the water and rice layer in the outer pot 2, and the pressure regulating component 4 is opened in stages after the temperature of the rice soup reaches the set requirement, and the pressure regulating component 4 passes through the air duct 42 , the airway joint 521, the flexible air nozzle 522, and the air guide hole 100 input low-temperature cold air into the outer pot 2 to reduce the temperature of the rice soup in the outer pot 2, and control the gelatinization temperature and gelatinization time of the rice grains precisely while suppressing the overflow of the rice soup . This setting enables the heating element 6 of the cooking appliance provided in this embodiment to use high-power heating to simulate traditional firewood porridge in the porridge cooking mode, which effectively avoids the rice soup bubbles produced by high-power continuous heating while improving the taste of rice porridge. The steam port on the pot cover 5 overflows.

In the cooking utensil provided in this embodiment, the structure of components such as the energy gathering cover 33 , the double water level electrode 8 and the sealing ring 53 of the pot lid is the same as that in the first embodiment. The difference between the inner pot and the first embodiment is that in this embodiment, the inner pot has an air guide hole 100 along the edge 311 of the inner pot; while the difference between the outer pot is that there is no air guide hole. Therefore, no more details.

Embodiment three

This embodiment is basically the same as embodiment two and its variations, the difference being that the structure of the pot cover sealing ring 53' is different and the connection modes of the pot cover air channel 52 and the air guide hole 100 are different.

As shown in Figures 25 to 27, the pot lid sealing ring 53' includes a main body 531', an inner sealing lip 532', an outer sealing lip 533' located on both sides of the main body 531', and an assembly part 534'. The assembly part 534' is engaged with the slot on the cover body 51, and the air channel connector 521 on the cover air channel 52 is connected to the main body part 531' of the pot cover sealing ring. After the cover body 51 is closed, the inner sealing lip 532' and the outer sealing lip 533' contact the inner pot edge 311 on the outer periphery of the air guide hole 100, and the inner sealing lip 532', the outer sealing lip 533' and the inner pot edge 311 form a continuous The annular sealing chamber 530 ′ through which the airway joint 521 and the air guiding hole 100 are communicated.

In the second embodiment, in order to realize the docking of the air guide hole 100 and the flexible air nozzle 522, the inner pot 31 needs to be positioned according to the positioning marks. In this embodiment, after the pot lid 5 is closed by changing the structure of the pot lid seal ring 53', the inner seal lip 532', the outer seal lip 533' and the inner pot edge 311 form a continuous annular seal cavity 530. '. Based on the circumferential penetration of the annular sealed cavity 530', any placement of the inner pot 31 can realize the communication between the airway joint 521 and the air guide hole 100, that is, the airway joint 521 and the air guide hole 100 are mostly on the axial projection plane of the functional cooking appliance. Can be staggered or overlapped. The user does not need to position the inner pot 31 during use, and the connection of the air passage can be realized by placing the inner pot 31 at will, which is very convenient to use. Furthermore, the airtight connection between the airway joint 521 and the air guide hole 100 based on the sealing ring 53' of the pot lid also makes it unnecessary to set a flexible air nozzle in this embodiment, which not only reduces the cost, but also greatly facilitates assembly and cleaning.

Embodiment four

This embodiment is basically the same as Embodiment 2 and its variations, the difference is that: as shown in Figure 28 and Figure 29, the cooking utensil also includes a pressure cooker cover 9, which has a cover tooth (due to the reason of the viewing angle, the figure is not shown ) and the pot body 1 has pot teeth 12 that match the lid teeth. This setting will make the cooking appliance provided in this example also have a fourth cooking mode, namely a high-pressure cooking mode. In this mode, the pot lid 5 is in an open state and the draining and steaming assembly 3 is removed from the outer pot 2, the pressure pot lid 9 is closed on the pot body 1 through the lid teeth and the pot teeth 12, and the pressure cooker lid 9 and the outer pot 2 A sealed pressure chamber is formed by a pressure cooker lid sealing ring 91 between them. However, the present invention does not make any limitation thereto. In other embodiments, when the cooking pressure requirement is not high, such as only slight pressure, it is not necessary to set pot teeth and cover teeth, but only need to replace the pot cover 5 with a pressure cooker cover with higher pressure bearing capacity.

Although the present embodiment takes the structure of the second embodiment as an example to describe the high-pressure cooking mode. But similarly, a pressure cooker cover can also be added to the structure shown in Embodiment 1 to realize the high-pressure cooking mode.

To sum up, in the cooking utensil provided by the present invention, the draining and steaming component is housed in the outer pot as a whole, and the whole cooking utensil is integrated after the lid is closed, and the structure is very simple. The tightening method based on the inner pot edge, the outer pot edge, and the inner pot sealing ring on the outer wall of the inner pot not only has good airtightness, is convenient to install, but also effectively shortens the distance between the outer pot and the pot cover, which is convenient for moving. The pot provides the conditions except that the pot cover is sealed after draining and steaming the assembly. Combined with the detachable structure of the draining and steaming component and the distribution of air passages, the cooking utensil provided by the present invention can have multiple cooking modes; when the draining and steaming component is placed, it can be used to make drained rice, and after the draining and steaming component is removed, it can be used as a traditional cooking utensil. The rice cooker can be used to stew rice or cook porridge, so that one machine can be used for multiple purposes. In addition, the air guide holes distributed on the edge of the pot also greatly simplify the positioning connection between it and the pressure regulating component, and the installation of the inner pot and the outer pot after cleaning is very convenient.

Although the present invention has been disclosed above by the preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with this art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope should be subject to the scope of protection required by the claims.

100: air hole

11: Pot body air passage

21: Edge of outer pot

311: Edge of inner pot

312: outer wall of inner pot

3201: The first air guide channel

3202: The second air guide channel

321: sealing part

3221: radial connection

3222: Axial connection

70: axial air hole

71: Ring body

72: Annular sealing valve

Claims (13)

A cooking appliance comprising: Pot body; The outer pot is arranged in the pot body and has air guide holes on the edge of the outer pot; The steaming assembly includes an inner pot and an inner pot sealing ring, the inner pot is detachably arranged in the outer pot and forms a pressure chamber with the outer pot, the inner pot sealing ring includes a sealing part and a connecting part, and the sealing part is located in the guide The radial outer side of the air hole is pressed tightly between the edge of the inner pot and the edge of the outer pot. The connecting part is against the outer wall of the inner pot to tighten the sealing ring of the inner pot. An air guide channel connecting the air guide hole and the pressure chamber; The pressure regulating component is arranged on the pot body and is sealed and communicated with the air guide hole. The pressure regulating component is used to adjust the pressure in the pressure chamber; or when the draining and steaming component is removed, it can transmit gas to the outer pot to reduce the temperature of the liquid in the outer pot ; The pot lid can be sealed and closed to the inner pot through the pot cover sealing ring; or the pot cover can be sealed and closed to the outer pot through the pot cover sealing ring when the draining and steaming assembly is removed; The heating element is arranged on the pot body to heat the outer pot. The cooking utensil according to claim 1, wherein the connecting part includes a radial connecting part and an axial connecting part, the radial connecting part connects the sealing part and is close to the bottom of the inner pot edge, and the axial connecting part The connecting portion extends toward the bottom of the pot body and abuts against the outer wall of the inner pot; the air guide channel includes a first air guide channel and a second air guide channel; wherein, a communication guide is formed between the radial connecting portion and the edge of the outer pot. The first air guide channel of the air hole, the second air guide channel communicating with the pressure chamber is formed between the axial connection part and the outer pot body. The cooking utensil according to claim 1, wherein the pot body has a pot body air channel extending to its upper end surface, the bottom end of the pot body air channel is connected to the pressure regulating assembly, and the top end is sealed and connected through the axial air hole on the outer pot sealing ring The air guide hole on the edge of the outer pot. The cooking utensil according to claim 3, wherein the outer pot sealing ring includes an annular ring body and two annular sealing flaps on the upper surface of the annular ring body, the annular ring body has axial air holes, and the edge of the outer pot rests against Between the two annular sealing flaps, the edge of the outer pot, the two annular sealing flaps and the upper surface of the annular ring body, an annular air channel communicating with the axial air hole and the air guide hole and penetrating in the circumferential direction is formed. The cooking appliance as described in claim 1, wherein the cooking appliance also includes two water level electrodes detachably connected to the pot cover, the center distance between the two water level electrodes is greater than or equal to 5 mm, and the ends of the water level electrodes reach The maximum distance between the inner bottom wall of the inner pot is greater than or equal to 30 mm. The cooking utensil according to claim 1, wherein the bottom of the inner pot includes a raised portion and an outer peripheral portion, the raised portion protrudes upwards relative to the outer peripheral portion and there are multiple radial drainage grooves on the raised portion, and the outer peripheral portion is spaced apart from each other. A plurality of circumferential drainage grooves are distributed. The cooking utensil as described in claim 6, wherein the peripheral wall of the radial draining groove and/or the circumferential draining groove is chamfered to form an inclined guide wall whose thickness gradually decreases toward the center of the draining groove, and the thickness of the end of the inclined guide wall is equal to 1/4 of the thickness of the starting end. A cooking appliance comprising: pot body and outer pot; The steaming assembly includes an inner pot and an inner pot sealing ring, the inner pot is detachably arranged on the outer pot and forms a pressure chamber with the outer pot, the inner pot has air guide holes along the inner pot, and the inner pot sealing ring includes a sealing part and the connecting part, the sealing part is located on the radially outer side of the air guide hole and is pressed tightly between the edge of the inner pot and the edge of the outer pot, the connecting part is against the outer wall of the inner pot to tighten the sealing ring of the inner pot, the sealing ring of the inner pot and the An air guide channel connecting the air guide hole and the pressure chamber is formed between the inner pot opposite to it; or, the sealing ring of the inner pot has a through hole, and the through hole forms an air guide channel connecting the air guide hole and the pressure chamber; The pot cover includes a cover body and a pot cover air channel. The cover body is sealed and closed to the inner pot through the cover sealing ring and the cover air channel is connected to the air guide hole; or when the draining and steaming component is removed, the pot cover can be sealed by the pot cover sealing ring Close the lid on the outer pot and make the air passage of the lid communicate with the outer pot; The pressure regulating component is arranged on the pot body and communicates with the air channel of the pot cover. The pressure regulating component is used to adjust the pressure in the pressure chamber; or when the draining and steaming component is removed, it can transmit gas to the outer pot to reduce the temperature of the liquid in the outer pot ; The heating element is arranged at the bottom of the outer pot. The cooking utensil according to claim 8, wherein the connection part includes a radial connection part and an axial connection part, the radial connection part is connected to the sealing part, and the axial connection part extends toward the bottom of the pot body; the inner peripheral wall part of the axial connection part radially protrudes and leans against the outer wall of the inner pot to tighten the sealing ring of the inner pot; the air guide channel includes a first air guide channel and a second air guide channel; wherein, between the radial connection part and the edge of the inner pot A first air guide channel communicating with the air guide hole is formed, and a second air guide channel communicating with the pressure chamber is formed between the inner wall of the unprotruded axial connection part and the outer wall of the inner pot. The cooking utensil according to claim 9, wherein the radial connection part is recessed relative to the sealing part so that the first air guide passage passes through in the circumferential direction, and the inner peripheral wall of the axial connection part has a plurality of radial protrusions and abuts against the inner pot The ribs on the outer wall, the inner wall of the unprotruded axial connection between adjacent ribs and the outer wall of the inner pot form a plurality of second air guide channels. The cooking utensil according to claim 8, wherein the air passage of the pot cover includes an air passage joint and a flexible air nozzle connected to the end of the air passage joint, the flexible air nozzle is arranged opposite to the air guide hole on the edge of the inner pot, and the pot lid The timely airway joint is sealed and connected to the air guide hole through a flexible air nozzle. The cooking utensil according to claim 8, wherein the sealing ring of the pot lid includes an annular main body and inner sealing lips and outer sealing lips located on both sides of the annular main body, and the air passage joint is connected to the annular main body; When the pot is used, the inner sealing lip and the outer sealing lip abut against the edge of the inner pot to seal the air guide hole, and the inner sealing lip, the outer sealing lip, and the edge of the inner pot form a circumferentially penetrating annular sealing cavity, and the annular sealing cavity communicates with the air passage Connectors and vents. The cooking utensil as described in claim 8, wherein the cooking utensil also includes a pressure cooker cover that is detachably arranged with the pot body, the pressure cooker cover has lid teeth, and the pot body has pot teeth that match the lid teeth; The lid of the pressure cooker can be closed on the pot body when the draining and steaming assembly is removed and the lid is opened, and a sealed pressure chamber is formed between the lid of the pressure cooker and the outer pot.

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