CN118252362A

CN118252362A - Cooking utensil

Info

Publication number: CN118252362A
Application number: CN202310641565.7A
Authority: CN
Inventors: 陈建新; 吕华
Original assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Current assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Priority date: 2022-12-28
Filing date: 2023-05-31
Publication date: 2024-06-28
Also published as: CN220141339U; CN220256307U; CN118252361A; CN219962599U; CN219962512U; CN118252359A; CN219962598U; WO2024141852A2; CN220141426U; CN220256280U; CN219940318U; CN219940317U; WO2024141852A3; CN118252387A; CN118252371A

Abstract

The application discloses a cooking utensil which comprises a cooker body, a cover body, a communication port opening and closing assembly, an air passage structure and a reversing assembly. The cover body is arranged on the cooker body in an openable and closable manner so as to form a cooking space between the cover body and the cooker body. The cover body is provided with an air inlet and an air outlet which are used for communicating the cooking space and a communication port which is used for communicating the cooking cavity with the outside. The communication opening and closing assembly is used for opening or blocking the communication opening. The air path structure comprises an air flow generating device and an air flow reversing device connected with the air flow generating device through a pipeline, wherein the air flow reversing device is used for realizing air flow reversing in the air path structure, one end of the air path structure is communicated with the air inlet and the air outlet, and the other end of the air path structure is communicated with the outside. The reversing assembly is arranged on the cover body and can move relative to the cover body, and the reversing assembly is used for driving the communication opening and closing assembly and the airflow reversing device to correspondingly act, so that when the reversing assembly acts, the communication opening and closing assembly and the airflow reversing device synchronously or cooperatively act.

Description

Cooking utensil

Technical Field

The application relates to the technical field of cooking appliances, in particular to a cooking appliance.

Background

In order to improve the cooking effect of the rice cooker, some rice cookers improve the fresh-keeping effect of rice by vacuum, and some rice cookers realize quick cooking by blowing air into the cooker to prevent overflow, so that good cooking experience is brought to consumers. However, the function realized by vacuum or air blowing is relatively single, and the effect of the rice is limited by the single means adopted in the prior art.

Accordingly, a cooking appliance is needed to at least partially solve the above problems.

Disclosure of Invention

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the application is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above problems, the present application provides a cooking appliance including:

the pot body comprises a pot liner for accommodating food materials and a heating device;

The cover body is arranged on the pot body in an openable and closable manner so as to form a cooking space between the cover body and the pot liner, and the cover body is provided with an air inlet and an air outlet which are used for communicating the cooking space and a communication port which is used for communicating the cooking space with the outside;

the communication port opening and closing assembly is arranged on the cover body and used for opening or blocking the communication port;

The air channel structure comprises an air flow generating device and an air flow reversing device connected with the air flow generating device through a pipeline, wherein the air flow reversing device is used for realizing air flow reversing in the air channel structure, one end of the air channel structure is communicated with the air inlet and the air outlet, and the other end of the air channel structure is communicated with the outside;

The reversing assembly is arranged on the cover body and used for driving the communication opening and closing assembly and the airflow reversing device to correspondingly act, so that when the reversing assembly acts, the communication opening and closing assembly and the airflow reversing device synchronously or cooperatively act.

According to the application, the reversing assembly can drive the communication opening and closing assembly and the airflow reversing device at the same time, so that the communication opening and closing assembly and the airflow reversing device are linked, thereby cooperatively changing the communication state of the cooking space and the environment and the airflow direction in the air passage, easily controlling the air pressure in the cooking space, improving the integration level of the functions of the cooking appliance, and improving the user experience. The air pressure state of the cooking space is only driven and switched by one reversing assembly, and the cooking utensil has compact structure and low hardware cost.

Optionally, the reversing assembly comprises a power supply device and an intermediate power transmission device connected with the power supply device, wherein the power supply device is used for supplying power for enabling the communication opening and closing assembly and the airflow reversing device to act, and the intermediate power transmission device is connected with the communication opening and closing assembly and the airflow reversing device and is used for transmitting the power to the communication opening and closing assembly and the airflow reversing device.

According to the application, the reversing assembly consists of the relatively independent power supply device and the intermediate power transmission device, and the control of the communication opening and closing assembly and the airflow reversing device is realized through mechanical transmission so as to adapt to the narrower installation space of the cover body.

Optionally, the intermediate power transmission device includes a transmission body configured to be rotatable about a rotation axis extending in the second direction under the drive of the power supply device, the transmission body including:

a first transmission surface, being at least a part of a circumferential surface of the intermediate power transmission device, for connection to and acting on the air flow reversing device, the different positions of the first transmission surface in the circumferential direction being different in radial distance from the rotation axis; and

And a second transmission surface, which is a part of the surface of the intermediate power transmission device, for being connected to and acting on the communication port opening and closing assembly, the second transmission surface having a second transmission surface first end and a second transmission surface second end disposed opposite in the second direction, the position of the second transmission surface first end in the second direction being different from the position of the second transmission surface second end in the second direction.

According to the application, the first transmission surface and the second transmission surface are arranged, and the rotation is used as power transmission to drive actuation in two directions, so that the control is simple and the performance is stable.

Optionally, in a projection of the transmission body in the second direction, the second transmission surface is located in a first region of the transmission body in the circumferential direction, the first transmission surface is located in a second region of the transmission body in the circumferential direction, the first region and the second region at least partially overlap or do not overlap each other.

According to the application, the first transmission surface and the second transmission surface are flexible in the arrangement position of the transmission body.

Optionally, the second transmission surface further comprises a second transmission surface intermediate portion located between the second transmission surface first end portion and the second transmission surface second end portion, a position of the second transmission surface intermediate portion in the second direction being different depending on a circumferential position of the second transmission surface intermediate portion.

According to the application, the transition between the first end of the second transmission surface and the second end of the second transmission surface can be made through the middle of the second transmission surface.

Optionally, the transmission body includes:

A transmission portion configured to be rotatable about the rotation axis, at least a portion of an outer peripheral surface of the transmission portion being configured as an arc, the rotation axis passing through a center of the arc;

A protrusion portion connected to an arcuate circumferential surface of the transmission portion and protruding outwardly in a radial direction of the arc; and

A bevel portion connected to the transmission portion, the bevel portion being provided with the second transmission surface,

Wherein the outer peripheral surface of the boss and a portion of the arcuate peripheral surface of the transmission portion that is circumferentially adjacent to the boss constitute the first transmission surface.

According to the application, the action directions of the first transmission surface and the second transmission surface are different, and the transmission main body structure is reasonably arranged, so that the first transmission surface and the second transmission surface do not mutually influence the action surface arrangement and the function realization of each other.

Optionally, the second transmission surface is provided at an axial end surface of the ramp portion.

According to the application, the second transmission surface setting method is simple.

Optionally, the intermediate power transmission device further includes:

A first gear connected to the power supply device and rotatable by the power supply device, the rotation axis of the first gear extending in the second direction; and

A second gear meshed with the first gear and coaxially connected with the transmission main body,

Wherein the diameter of the first gear is larger than the diameter of the second gear, and/or the number of teeth of the first gear is larger than the number of teeth of the second gear.

According to the application, the gear transmission is smaller, which is beneficial to reducing the torque of the power supply device, thereby reducing the cost of the power supply device.

Optionally, the power supply device is configured as an electric motor.

According to the application, the power supply device has low cost, simple control and stable performance.

Optionally, the intermediate power transmission device is configured to be movable in a first direction relative to the cover body under the drive of the power supply device, wherein the intermediate power transmission device is provided with a connecting portion for connecting to and acting on the air flow reversing device and a second transmission surface for connecting to and acting on the communication port opening and closing assembly,

Wherein the second transmission surface has a second transmission surface first end and a second transmission surface second end disposed opposite in the first direction, the second transmission surface first end having a position in a second direction different from a position in the second direction of the second transmission surface second end, wherein the second direction is perpendicular to the first direction.

According to the application, the movement of the intermediate power transmission device is directly acted on the airflow reversing device, the intermediate power transmission device is provided with a second transmission surface, and the movement of the intermediate power transmission device is transmitted to the other dimension through the second transmission surface so as to act on the communication port opening and closing assembly, so that the control is simple, and the performance is stable.

Optionally, the intermediate power transmission device includes:

a slide mount for securing to the cooking appliance, the slide mount comprising a slide mount guide extending along the first direction; and

A slider for moving in the first direction under the drive of the power supply device, the slider including a slider guide portion connected to the slider seat guide portion and movable in the first direction relative to the slider seat guide portion,

Wherein the slider is provided with the connection portion and the second transmission surface.

According to the present application, the intermediate power transmission device is compact.

Optionally, the intermediate power transmission device further comprises a biasing element for applying a biasing force in the first direction to the slider,

Wherein the first direction includes two opposite directions, and the power supply device and the biasing element apply forces to the slider in the two opposite directions of the first direction, respectively.

Further, the biasing element is an elastic return element disposed between the slider and the slider seat, the elastic return element being configured to be elastically deformable in the first direction.

According to the application, the biasing element is beneficial to restoring the sliding block to the displacement acted by the power supply device, and the actuation is simple and efficient.

Optionally, the power supply is configured as a push-pull electromagnet, the push-pull electromagnet being movable in the first direction relative to the cover.

According to the application, the power supply device adopts the push-pull electromagnet, so that the control is simple and the performance is stable.

Optionally, the intermediate power transmission device is configured to be movable relative to the cover in a second direction under the drive of the power supply device, wherein the intermediate power transmission device is provided with a connecting portion for connecting to and acting on the communication port opening and closing assembly and a first transmission surface for connecting to and acting on the air flow reversing device,

The first transmission surface is provided with a first transmission surface first end part and a first transmission surface second end part which are oppositely arranged along the second direction, the position of the first transmission surface first end part along the first direction is different from the position of the first transmission surface second end part along the first direction, and the first direction is perpendicular to the second direction.

According to the application, the intermediate power transmission device directly acts on the communication port opening and closing assembly, the intermediate power transmission device is provided with the first transmission surface, and the movement of the intermediate power transmission device is transmitted to the other dimension through the first transmission surface so as to act on the airflow reversing device, so that the control is simple, and the performance is stable.

Optionally, the power supply means comprises an electromagnet,

The intermediate power transmission device includes a first reversing portion and a second reversing portion arranged in a second direction, the second reversing portion being configured to be movable in the second direction relative to the first reversing portion,

The electromagnet is mounted to one of the first and second commutation sections, the other of the first and second commutation sections comprising a magnetic substance,

The first reversing part is fixed to the cover body, and the intermediate power transmission device is arranged on the first reversing part of the second reversing part.

According to the application, the power supply device is driven by an electromagnet, and has simple control and stable performance.

Optionally, the intermediate power transmission device comprises a linkage mechanism including a link having oppositely disposed link first and second ends,

The power supply device is used for driving the first end of the connecting rod to move along the second direction so as to change the position of the second end of the connecting rod along the second direction, and the second end of the connecting rod is used for being connected to and acting on the communication port opening and closing assembly.

According to the application, the power provided by the power supply device is transmitted to the communication port opening and closing assembly through the arrangement of the connecting rod, so that the actuation is simple and reliable, and the positions of elements in the cover body can be reasonably distributed.

Optionally, the link is configured to be rotatable about a link rotation axis, wherein the link rotation axis is perpendicular to the second direction.

According to the present application, the connecting rod actuates the communication port opening and closing assembly using the lever principle.

Optionally, the reversing assembly drives the airflow reversing device to move in a first geometric dimension;

the reversing component drives the connecting rod to move in a third geometric dimension;

When the cover body is in a state of covering the pot body, an included angle between the projection line of the first geometric dimension and the projection line of the third geometric dimension on the horizontal plane is 0-180 degrees.

Further, when the cover body is in a state of covering the pot body, an included angle between the projection line of the first geometric dimension and the projection line of the third geometric dimension on the horizontal plane is 0 to 120 degrees.

According to the application, the connection position of the air flow reversing device and the intermediate power transmission device and the connection position of the connecting rod and the intermediate power transmission device can be flexibly arranged.

The reversing assembly drives the communication port opening and closing assembly to move in a second geometric dimension;

The first geometric dimension is perpendicular to the second geometric dimension.

Further, in a state that the cover body covers the pot body, the first geometrical dimension is a straight line in a horizontal plane, and the second geometrical dimension is a straight line perpendicular to the horizontal plane.

In the application, the airflow reversing device and the communication opening and closing assembly are reasonably arranged.

Optionally, the airflow reversing device comprises a valve cavity and a valve core, wherein the valve core is arranged in the valve cavity and can move in the valve cavity to switch an airflow channel in the valve core;

The cooking appliance is configured to:

When or after the communication port is plugged by the communication port opening and closing component, the reversing component drives the valve core to move in the valve inner cavity so as to realize that the air flow direction in the air path structure at the air inlet and outlet port flows from the cooking space to the outside;

And when or after the communication port opening and closing assembly opens the communication port, the reversing assembly drives the valve core to move in the valve inner cavity so as to realize that the air flow direction in the air path structure at the air inlet and outlet port flows from the outside to the cooking space.

According to the present application, the cooking space has two air pressure states. When the air pressure state is switched, the cooking utensil adjusts the structure of the air flow path first, then adjusts the air flow direction, and realizes ordered control.

Optionally, the cooking utensil further comprises a ventilation cavity, the ventilation cavity is arranged on the cover body, the cooking space is communicated with the ventilation cavity through the communication port, and a ventilation hole outside the ventilation cavity, which is communicated with the outside, is further formed in the ventilation cavity.

According to the application, the cooking utensil is communicated with the outside through the ventilation cavity, so that the flexibility of setting the cooking utensil can be increased.

Optionally, the cooking utensil further comprises a steam valve arranged on the cover body, a steam valve vent communicated with the outside is arranged on the steam valve, and a vent hole outside the vent cavity is communicated with the steam valve.

Or the cooking utensil further comprises:

The steam valve is arranged on the cover body and provided with a steam valve vent communicated with the outside; and, a step of, in the first embodiment,

A steam channel which is arranged on the cover body and is communicated with the steam valve,

Wherein, the ventilation cavity outer vent communicates to the steam channel.

According to the present application, the cooking appliance may be provided with a steam valve for exhausting steam generated by cooking by providing the ventilation chamber.

Alternatively, the process may be carried out in a single-stage,

The cover body is provided with a push rod through hole;

The communication port opening and closing assembly comprises a push rod assembly, the push rod assembly is arranged in the push rod through hole, the reversing assembly is connected to and acts on the push rod assembly, the push rod assembly is movable between a blocking position and an open position relative to the push rod through hole, the push rod assembly comprises a first end of the push rod assembly and a second end of the push rod assembly, the first end of the push rod assembly is opposite to the second end of the push rod assembly, the communication port is blocked when the push rod assembly is located at the blocking position, and the first end of the push rod assembly is open when the push rod assembly is located at the open position.

According to the application, the communication port opening and closing assembly has compact structure and stable performance.

Optionally, the pushrod assembly second end is provided with a flange projecting outwardly in a radial direction, the flange having a radial dimension greater than a radial dimension of the pushrod through bore,

The communication port opening and closing assembly further comprises a push rod spring, wherein the push rod spring is sleeved on the periphery of the second end part of the push rod assembly and is located between the flange and the cover body.

According to the present application, the push rod spring is used to return the communication port opening and closing assembly from the blocking position to the open position.

Optionally, a sealing member is disposed at an end of the push rod through hole facing the communication port, and the sealing member is in sealing contact with the push rod assembly.

According to the present application, the sealing member can prevent moisture from entering the inside of the cover.

Optionally, the reversing assembly is connected to and acts upon the push rod assembly second end.

According to the application, the reversing component acts on one end of the push rod component, which is not used for blocking the communication port, so that mutual interference among components is avoided.

Drawings

The following drawings are included to provide an understanding of the application and are incorporated in and constitute a part of this specification. Embodiments of the present application and their description are shown in the drawings to explain the principles of the application.

In the accompanying drawings:

Fig. 1 is a schematic side sectional view of a cooking appliance according to a first embodiment of the present application;

Fig. 2 is a top perspective view illustrating an internal structure of a cover of the cooking appliance of fig. 1;

Fig. 3 is a perspective view of a cover of the cooking appliance of fig. 1;

FIG. 4 is a schematic top view of the removable cover of FIG. 3;

FIG. 5 is a side sectional view schematically showing an internal structure of a cover of the cooking appliance of FIG. 1, in which a communication port opening and closing assembly is located at an open position;

FIG. 6 is a schematic side sectional view of an internal structure of a cover of the cooking appliance of FIG. 1, wherein the communication port opening and closing assembly is located at a blocking position;

FIG. 7 is a schematic top view in cross-section of the airflow reversing device shown in FIG. 2, with the valve spool in a second vent position;

FIG. 8 is a schematic top view in cross-section of the airflow reversing device shown in FIG. 2, with the valve spool in a first vent position;

FIG. 9 is a schematic view of an airflow path of the cooking appliance of FIG. 1, wherein the reversing assembly is in a venting mode;

FIG. 10 is a schematic view of an airflow path of the cooking appliance of FIG. 1, wherein the reversing assembly is in a sealed operating state;

FIG. 11 is a perspective view of the power supply device and the intermediate power transmission device shown in FIG. 2;

FIG. 12 is a schematic bottom view of the power supply apparatus and intermediate power transmission apparatus of FIG. 11;

FIG. 13 is a schematic side cross-sectional view of the internal structure of the cover of the cooking appliance of FIG. 1, with the reversing assembly in a venting mode;

FIG. 14 is a schematic side cross-sectional view of the internal structure of the cover of the cooking appliance of FIG. 1, with the reversing assembly in a sealed operating state;

fig. 15 is a top perspective view illustrating an internal structure of a cover of a cooking appliance according to a second embodiment of the present application;

FIG. 16 is a schematic perspective view of the power supply device and the intermediate power transmission device of FIG. 15;

Fig. 17 is a schematic cross-sectional side view illustrating an internal structure of a cover of a cooking appliance according to a third embodiment of the present application, wherein a reversing assembly is in a ventilating operation state;

Fig. 18 is a side sectional view schematically showing an internal structure of a cover of a cooking appliance according to a third embodiment of the present application, in which a reversing assembly is in a sealed operation state;

Fig. 19 is a perspective view of a transmission main body of the intermediate power transmission device shown in fig. 17 and 18;

FIG. 20 is a side cross-sectional schematic view of the transmission body of the intermediate power transmission device shown in FIG. 19;

Fig. 21 is a schematic cross-sectional side view illustrating an internal structure of a cover of a cooking appliance according to a fourth embodiment of the present application, wherein a reversing assembly is in a ventilating operation state;

Fig. 22 is a schematic cross-sectional side view illustrating an internal structure of a cover of a cooking appliance according to a fourth embodiment of the present application, wherein a reversing assembly is in a sealed operation state;

fig. 23 is a perspective view of the first reversing segment shown in fig. 21 and 22;

fig. 24 is a schematic side cross-sectional view of the first reversing segment shown in fig. 23;

fig. 25 is a perspective view of the second reversing segment shown in fig. 21 and 22;

fig. 26 is a schematic side cross-sectional view of the second diverter shown in fig. 25.

Reference numerals illustrate:

10: cover body

11: Face cover

12: Lining cover

13: Removable cover

14: Pot opening sealing ring

15: Concave part

16: Venting chamber

16A: vent outside the vent chamber

17: Communication port

18: Inlet and outlet

18A: additional air inlet and outlet

19: Inlet and outlet air cavity

21: First fixing seat

22: Second fixing seat

23: First sealing member

24: Second sealing member

25: Third seal member

26: Push rod through hole

27: Clamping part

28: Removable cover latch

28A: removable cover mounting portion

29: Upper convex part

30: Pot body

31: Pot liner

32: Cooking space

33: Heating device

34: Temperature sensor

35: Torsion spring

36: Pivot shaft

37: Sensor through hole

38A: first air inlet and outlet

38B: second air inlet and outlet

39: Additional sensor through hole

40: Communication port opening and closing assembly

41: Push rod

42: Push rod sleeve

43: Flange

44: Push rod spring

45: Push rod assembly

46: First end of push rod assembly

47: Second end of push rod assembly

48: First end of push rod

49: Second end of push rod

50: Air flow reversing device/reversing valve

51: First air vent

52: Second ventilation port

53: Third air vent

54: Fourth air vent

55: Valve body

55A: valve inner cavity

55B: valve hole

55C: first end of valve body

55D: second end of valve body

55E: a first inner cavity

55F: a second inner cavity

55G: a third inner cavity

55H: fourth inner cavity

56: Valve core

57: Valve core spring

58: Valve core main body

58A: valve core inner cavity

58B: first through hole

58C: second through hole

59A: first sealing ring

59B: second sealing ring

59C: third sealing ring

60/160/260/360: Reversing assembly

61: Link mechanism

62: Connecting rod

63: First end of connecting rod

64: Second end of connecting rod

65: First pin shaft

66: Second pin shaft

70/170/270/370: Intermediate power transmission device

70A/270A/370A: transmission main body

71: Second transmission surface

71A/271A: a first end of the second transmission surface

71B/271B: second end of second transmission surface

71C/271C: intermediate portion of second transmission surface

72: Transmission part

73: Raised portion

73A: the outer peripheral surface of the boss

74: Bevel portion

75: First circumferential surface

76: A second circumferential surface

77: Third circumferential surface

79/379: First transmission surface

80/180/280/380: Power supply device

81: Motor with a motor housing

82: Motor mounting part

85: Air path structure

90: Steam valve

91: Steam valve inner cavity

93: Air pump air inlet

94: Air outlet of air pump

95: Air flow generating device/air pump

100: Cooking utensil

188: First gear

189: Second gear

271: Second transmission surface

272: Sliding block seat

272A: slider seat mounting portion

273: Sliding block

273E: connecting part

274: Slider spring

275: Inner cavity of sliding block seat

276A: side wall of sliding block seat

276B: end wall of slide block seat

276C: bottom wall of sliding block seat

277: Sliding chute

278: Supporting pin shaft

279: Slider protrusion

281: Push-pull electromagnet

361, Respectively; a first reversing part

362: A second reversing part

370A: transmission main body

371: Reversing mechanism main body

372: Bevel portion

373: Main body groove

374: Bolt

375: Side surface

375A/379A: low end

375B/379B: high-end

376: Connecting pin

377: Electromagnet

377A: plug

378: Sliding rail

381: Iron block

382: Iron block support

383: Iron block support cover

384: Bracket mounting part

D1: first direction

D2: second direction

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the application may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the application.

In the following description, a detailed description will be given for the purpose of thoroughly understanding the present application. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. It will be apparent that embodiments of the application may be practiced without limitation to the specific details that are familiar to those skilled in the art. Preferred embodiments of the present application are described in detail below, however, the present application may have other embodiments in addition to these detailed descriptions.

Ordinal numbers such as "first" and "second" cited in the present application are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component". The use of the words "first," "second," and "third," etc. do not denote any order, and the words are to be interpreted as names.

It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like are used in the present application for illustrative purposes only and are not limiting.

The application provides a cooking appliance.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings.

As shown in fig. 1, the cooking appliance 100 of the present application includes a cover 10 and a pot 30. The pot body 30 is used for cooking food, the cover body 10 is used for covering the pot body 30, for example, the cover body 10 is connected to the pot body 30 in an openable and closable manner, and is used for covering the pot body 30. When the cover 10 covers the pot body 30, a cooking space 32 is formed between the cover 10 and the pot body 30.

The pot body 30 is provided with a pot container 31 for accommodating food materials, a heating device 33, a control device (not shown), and a lower temperature sensor (not shown). A pot container 31 for holding food material is removably provided in the pot body 30. When the cover body 10 covers the pot body 30, a cooking space 32 is formed between the cover body 10 and the pot liner 31. The heating device 33 is disposed at the bottom of the pot body 30 below the pot liner 31 to heat the food in the pot liner 31. The control device may be, for example, a micro control unit (Micro Control Unit, abbreviated as MCU) for implementing cooking control of the cooking appliance 100. The lower temperature sensor for sensing the temperature of the pot bladder 31 may be provided at the bottom center of the pot body 30 or at the side of the pot body 30. A top temperature sensor 34 may also be provided on the cover 10, the top temperature sensor 34 being used to detect the temperature at the top of the cooking space 32. The heating device 33, the lower temperature sensor and the top temperature sensor 34 are all electrically connected to the control device. The temperature sensing means feeds back the sensed temperature to the control device, so that the control device can realize more accurate control of, for example, the heating device 33 or the like based on the temperature information.

As shown in fig. 1 and 2, in the present application, the cover 10 is connected with the pot body 30 through the pivot shaft 36, the torsion spring 35 is disposed on the pivot shaft 36, and both ends of the torsion spring 35 respectively abut against the cover 10 and the pot body 30, so that the torsion spring 35 can apply an elastic force to the cover 10 away from the pot body 30. When the cover 10 is opened, the cover 10 may be sprung up by the elastic force of the torsion spring 35 to rotate about the pivot shaft 36.

As shown in fig. 1 to 4, the cover body 10 includes a face cover 11, a liner cover 12, and a detachable cover 13. The face cover 11 is located at the outermost side (i.e., uppermost side) of the cover 10 to constitute the outer shell of the cover 10. The liner cover 12 is disposed below the face cover 11, and is connected to the face cover 11. For example, the liner cover 12 may be connected to the face cover 11 by fasteners or snaps. The liner cover 12 is mainly used to intensively mount various functional parts of the cover body 10, such as a sensor, etc., for sensing and controlling the operation state of the cooking appliance 100. The detachable cover 13 is located at the innermost side (i.e., lowermost side) of the cover body 10, and is disposed below the liner cover 12. Removable cover 13 is removably attached to liner cover 12, such as by a snap-fit connection, to facilitate cleaning and replacement. The detachable lid 13 is configured to face the cooking space 32, i.e., when the lid 10 is closed on the pot 30, the detachable lid 13 is located directly above the cooking space 32.

As shown in fig. 3 and 4, the detachable cover 13 is provided with a locking portion 27 and a detachable cover locking portion 28. The clamping portion 27 is used for extending into a clamping portion accommodating portion of the lining cover 12, and then the detachable cover clamping portion 28 is matched with a detachable cover mounting portion 28A of the lining cover to realize detachable connection of the detachable cover 13. Specifically, the clamping part 27 and the detachable cover locking part 28 are arranged on opposite sides of the detachable cover 13, the clamping part 27 is inserted into the lining cover 12, and the detachable cover locking part 28 and the detachable cover mounting part 28A are buckled to complete the assembly of the detachable cover 13.

The liner cap 12 is also provided with a sensor through hole 37. The detachable cover 13 is further provided with an additional sensor through hole 39. The sensor through hole 37 and the additional sensor through hole 39 are used to mount the top temperature sensor 34 such that the sensitive element is closer to the cooking space 32. The detachable cover 13 is also provided with an upper convex part 29, and the upper convex part 29 is particularly provided with a plurality of convex points, so that water vapor can be condensed on the convex points in the cooking process without dripping into the cooking space, and the surface of rice is prevented from being excessively wet. An interlayer may be formed between the liner cover 12 and the detachable cover 13. The detachable cover 13 is provided with the pot mouth sealing ring 14, when the cover body 10 covers the pot body 30, the pot mouth sealing ring 14 is in sealing contact with the opening or the inner wall of the pot liner 31, so that the sealing between the cover body 10 and the pot liner 31 is realized, the pressure cooker can adapt to pressure cooking, and the restriction and guide functions on the steam discharge flow direction are realized.

The cover body 10 is provided with an air inlet and outlet cavity 19. The air inlet and outlet chamber 19 comprises two openings, an air inlet and outlet 18 and an additional air inlet and outlet 18A. The air inlet and outlet 18 is used to communicate the air inlet and outlet chamber 19 with the cooking space 32, i.e. the air inlet and outlet 18 communicates with the cooking space 32. The air inlet and outlet chamber 19 is provided to the liner cover 12, for example. Correspondingly, a first air inlet and outlet 38A is arranged on the lining cover 12, a second air inlet and outlet 38B is arranged on the detachable cover 13, and the first air inlet and outlet 38A and the second air inlet and outlet 38B are integrally used as an air inlet and outlet 18 to be communicated with the air inlet and outlet cavity 19. The additional air inlet and outlet port 18A is used to communicate with the air flow generating device 95 so that the cooking space 32 communicates with the air flow generating device 95 through the air inlet and outlet chamber 19 of the cover 10.

The cover 10 is provided with a vent chamber 16. The vent lumen 16 is not in communication with the access lumen 19 inside the cover 10. Cooking space 32 communicates with the external environment through venting chamber 16. The ventilation chamber 16 is defined by, for example, a portion of the liner cover 12 and a portion of the removable cover 13. Correspondingly, the detachable cover 13 is provided with a communication port 17, and the communication port 17 communicates the ventilation cavity 16 with the cooking space 32. The liner cover 12 is provided with a ventilation chamber outside vent hole 16A, and the ventilation chamber outside vent hole 16A communicates with the ventilation chamber 16 and the outside environment, respectively, so that the cooking space 32 communicates with the outside.

For example, the cover 10 is provided with a steam valve 90. The steam valve 90 is provided with a steam valve vent (not shown) communicating with the outside, and the cover 10 is also provided with a steam passage (not shown) communicating with the steam valve 90. The vent chamber outside vent hole 16A communicates to the steam passage. Thus, the cooking space 32 communicates with the outside environment through the communication port 17, the ventilation chamber 16, the ventilation chamber outside ventilation hole 16A, the steam passage, and the steam valve 90. Or the vapor valve vent may be directly connected to the vent chamber external vent hole 16A. In the present application, the steam valve 90 serves to communicate the cooking space 32 with the external environment to discharge steam generated by cooking.

In the ventilation cavity 16, the communication port 17 is arranged at a distance from the ventilation cavity outer ventilation hole 16A, so that better relative independence is realized between the communication port 17 and the ventilation cavity outer ventilation hole 16A.

On the basis of the above embodiment, the second sealing member 24 is provided between the liner cover 12 and the detachable cover 13 to form the side wall of the ventilation chamber 16, and the second sealing member 24 is in sealing contact with the liner cover 12 and the detachable cover 13, respectively, so that the steam generated by cooking can only enter the ventilation chamber 16 from the communication port 17, but not enter other parts of the liner cover 12. Similarly, a third sealing member 25 is disposed between the second air inlet and outlet 38B and the first air inlet and outlet 38A, and the air inlet and outlet chamber 19 is in sealing contact with the removable cover 13 through the third sealing member 25, that is, the side wall of the air inlet and outlet chamber 19 is in sealing contact with the removable cover 13, so that the steam generated by cooking can only enter the air inlet and outlet chamber 19 from the air inlet and outlet port 18, and cannot enter other parts of the liner cover 12. For example, as shown in fig. 3, the detachable cover 13 is provided with a recessed portion 15, and the communication port 17 and the second air inlet and outlet port 38B are both provided in the recessed portion 15. The lower ends of the second and third seals 24 and 25 are respectively in contact with the upper side and/or the side wall of the lower recess 15 to close the bonding gap thereof, forming a seal. It will be appreciated that a portion of the recess 15 forms the bottom wall of the venting chamber 16.

As shown in fig. 2, in the present application, the communication port opening and closing assembly 40, the air flow reversing device 50, the reversing assembly 60, and the air flow generating device 95 are mounted on the liner cover 12. Wherein the communication port opening and closing assembly 40 is movable with respect to the communication port 17 for opening or closing the communication port 17. The airflow reversing device 50 is respectively communicated with the airflow generating device 95 and the air inlet and outlet 18, and is used for switching the airflow direction between the airflow generating device 95 and the air inlet and outlet 18, so that the airflow generating device 95 sends or sucks air into the cooking space 32 through the air inlet and outlet 18. In the present application, the air flow generating device 95 and the air flow reversing device 50 are connected by a pipe to form the air path structure 85 of the cooking appliance 100. The reversing assembly 60 is movable relative to the cover 10. The reversing assembly 60 is connected to and acts upon the communication port opening and closing assembly 40 and the airflow reversing device 50 such that the operating conditions of the communication port opening and closing assembly 40 and the airflow reversing device 50 change when the reversing assembly 60 moves relative to the cover 10. It will be appreciated that the airflow generating device 95 and the reversing assembly 60 are electrically connected to and operate under the control of the control device.

In some embodiments of the present application, when the reversing assembly 60 moves relative to the cover 10, the reversing assembly 60 drives the communication port opening and closing assembly 40 and the airflow reversing device 50 to cooperatively act in synchronization or linkage such that the cooking space 32 has two air pressure states under the action of the communication port opening and closing assembly 40 and the airflow generating device 95. Specifically, the two air pressure states of the cooking space 32 include: a first air pressure state in which the cooking space 32 communicates with the outside environment; the air pressure of the cooking space 32 is lower than the second air pressure state of the external ambient air pressure. It can be appreciated that, according to specific requirements of different cooking procedures of the cooking appliance 100, the reversing assembly 60 and the air flow generating device 95 can be controlled to make the cooking space 32 in different air pressure states, and different air pressures exist in the cooking space 32, so as to achieve corresponding cooking effects.

Correspondingly, the reversing assembly 60 has different working states when moving to different positions relative to the cover body 10. The different operating states of the reversing assembly 60 correspond to different air pressure states of the cooking space 32. Specifically, the reversing assembly 60 has a venting mode of operation and a sealing mode of operation. The cooking appliance 100 is configured to: when the reversing assembly 60 is in the ventilation working state, the reversing assembly 60 enables the communication opening and closing assembly 40 to open the communication opening 17 (as shown in fig. 5), so that the cooking space 32 is communicated with the external environment and is in the first air pressure state; when the reversing assembly 60 is in the sealed operating state, the reversing assembly 60 causes the communication opening and closing assembly 40 to close the communication opening 17 (as shown in fig. 6) and causes the air flow generating device 95 to be in a state of exhausting air from the cooking space 32, so that the cooking space 32 is in a sealed and air flow-lost state, and thus can be in the second air pressure state.

As can be seen, to achieve the first air pressure state of the cooking space 32, only the communication port 17 needs to be opened. At this time, the cooking space 32 is communicated with the external environment, and the air pressure in the cooking space 32 is the same as the external environment air pressure when the ventilation balance is achieved. At this time, if the air flow generating device 95 operates, an air flow is formed inside the cooking space 32 between the communication port 17 and the air inlet and outlet port 18, and the air flow contains air in the external environment, thereby accelerating ventilation of the cooking space 32 from the external environment without substantially affecting the air pressure in the cooking space 32. To achieve the second air pressure state, the communication port 17 must be blocked, and the air flow generating device 95 must be operated to suck air from the cooking space 32 through the air inlet and outlet port 18, thereby making the interior of the cooking space 32 at a negative pressure.

In the present application, the communication port opening and closing assembly 40 is used to block or open the communication port 17. The communication port 17 is preferably provided above the pot liner 31 and extends in a horizontal plane. To achieve a better seal, the port opening and closing assembly 40 preferably acts in the vertical dimension. The airflow reversing device 50 can realize multiple on-off modes of a multipath flow path through a mechanical structure, the structure has a switching process, and meanwhile, the switching mechanism has a certain weight, and if the airflow reversing device is vertically placed or is placed at an angle with a horizontal plane, the control precision of the airflow reversing device can be influenced, so that the airflow reversing device 50 preferably works in the horizontal dimension. In the present application, the reversing assembly 60 drives the airflow reversing device 50 to move in a first geometric dimension, and drives the communication opening and closing assembly 40 to move in a second geometric dimension, wherein the first geometric dimension is perpendicular to the second geometric dimension. Preferably, in a state where the cover 10 covers the pot 30, the first geometrical dimension is a straight line in a horizontal plane, and the second geometrical dimension is a straight line perpendicular to the horizontal plane. As shown in fig. 2, the first geometric dimension is a first direction D1 that is horizontal, and the second geometric dimension is a second direction D2 that is vertical.

The mechanism by which the communication port opening and closing assembly 40 opens or closes the communication port 17 will be described below.

In the present application, the cooking appliance 100 is configured such that the reversing assembly 60 drives the communication port opening and closing assembly 40 to move in the second direction D2 between the open position and the blocking position with respect to the cover 10. Wherein, when the communication port opening and closing assembly 40 is located at the open position, the communication port opening and closing assembly 40 opens the communication port 17; when the communication port opening and closing assembly 40 is located at the blocking position, the communication port 17 is blocked by the communication port opening and closing assembly 40.

In some embodiments of the application, the liner cap 12 is provided with a mounting seat for mounting the active component. As shown in fig. 5 and 6, the holders include a second holder 22 enclosing the ventilation chamber 16 and a first holder 21 provided to the second holder 22. The first fixing seat 21 is provided with a push rod through hole 26 extending in the second direction D2, and the push rod through hole 26 extends all the way to the ventilation cavity 16. The communication port 17 is located directly below the push rod through hole 26. The communication port opening and closing assembly 40 includes a push rod assembly 45, the push rod assembly 45 being disposed in the push rod through hole 26, wherein the reversing assembly 60 is connected to and acts upon the push rod assembly 45 such that the push rod assembly 45 is movable relative to the push rod through hole 26 between a blocking position and an open position. The push rod assembly 45 includes a push rod assembly first end 46 and a push rod assembly second end 47 disposed opposite in the second direction D2. As shown in fig. 6, when the push rod assembly 45 is in the blocking position, the first end 46 of the push rod assembly blocks the communication port 17, the cooking space 32 is not communicated with the ventilation cavity 16, and the reversing assembly 60 is in a sealing working state; when the push rod assembly 45 is in the open position, as shown in fig. 5, the push rod assembly first end 46 opens the communication port 17 and the cooking space 32 communicates with the vent chamber 16. Preferably, the second direction D2 is a vertical direction. The blocking position of the push rod assembly 45 is lower than the open position of the push rod assembly 45.

The end of the push rod through hole 26 facing the ventilation chamber 16 is provided with a first seal 23, the first seal 23 being used for sealing between the push rod through hole 26 and the ventilation chamber 16. Specifically, the first seal 23 sealingly contacts the pushrod assembly 45 such that gas in the venting chamber 16 does not leak from the pushrod through bore 26. The pushrod assembly second end 47 is provided with a flange 43 projecting outwardly in a radial direction, the radial dimension of the flange 43 being greater than the radial dimension of the pushrod through bore 26. The communication port opening and closing assembly 40 further includes a push rod spring 44, wherein the push rod spring 44 is sleeved on the periphery of the second end 47 of the push rod assembly and is located between the flange 43 and the first fixing seat 21, and in the blocking position, the first end 46 of the push rod assembly compresses the first sealing member 23 to the communication port 17, and the push rod spring 44 is compressed.

In one possible implementation of the present embodiment, the push rod assembly 45 includes a push rod 41 and a push rod sleeve 42. The push rod 41 extends in the second direction D2. Specifically, the push rod 41 is disposed in the push rod through hole 26 and is movable in the second direction D2 relative to the first fixing base 21 between a blocking position (shown in fig. 6) and an open position (shown in fig. 5). Wherein the push rod 41 includes a push rod first end 48 and a push rod second end 49 disposed opposite in the second direction D2, the push rod first end 48 being for blocking or opening the communication port 17. When the push rod 41 is in the blocking position, the push rod first end 48 blocks the communication port 17; when the pushrod 41 is in the open position, the pushrod first end 48 opens the communication port 17. The first seal 23 sealingly contacts the pushrod first end 48 such that gas in the venting chamber 16 does not leak from the pushrod through bore 26. The pushrod first end 48 is also referred to as pushrod assembly first end 46. The push rod sleeve 42 is sleeved on the outer periphery of the second end 49 of the push rod 41, and the push rod sleeve 42 and the push rod 41 move synchronously relative to the first fixing seat 21 along the second direction D2. The end of the push rod sleeve 42 in the second direction D2 remote from the communication port 17 is provided with a flange 43. The push rod spring 44 is sleeved on the periphery of the push rod sleeve 42 and is located between the flange 43 and the first fixing seat 21. The push rod second end 49 and the push rod sleeve 42 form the push rod assembly second end 47. Wherein the reversing assembly 60 is coupled to and acts upon the push rod sleeve 42.

When the reversing assembly 60 is changed from the ventilation operation state to the sealing operation state, the reversing assembly 60 moves the push rod sleeve 42 relative to the first fixing seat 21 in the second direction D2 (e.g., downward toward the communication port 17), so that the push rod 41 is moved to the blocking position, and the push rod spring 44 is compressed; when the reversing assembly 60 is changed from the sealing operation state to the ventilation operation state, the push rod spring 44 moves the push rod sleeve 42 in the second direction D2 relative to the first fixing base 21 (e.g., upward away from the communication port 17), so that the push rod 41 is moved to the open position. It will be appreciated that movement of the push rod 41 relative to the communication port 17 changes position (from the open position to the closed position, or vice versa), i.e., the communication port opening and closing assembly 40 changes operating state.

A specific implementation of the airflow reversing device 50 is described below.

As shown in fig. 7 and 8, the air flow reversing device 50 is configured as a reversing valve, for example. The reversing valve 50 includes a valve chamber 55A and a spool 56, the spool 56 being disposed in the valve chamber 55A and movable therein to switch the air flow passage therein.

The reversing valve 50 includes a first vent 51, a second vent 52, a third vent 53, and a fourth vent 54. The reversing valve 50 is configured such that the communication relationship among the first air port 51, the second air port 52, the third air port 53, and the fourth air port 54 can be changed. For example, the first vent 51 may communicate with the third vent 53 or the fourth vent 54. When the first vent 51 communicates with one of the third vent 53 and the fourth vent 54, the second vent 52 communicates with the other of the third vent 53 and the fourth vent 54.

As shown in fig. 9 and 10, the air flow generating device 95 is configured as an air pump, for example. The air pump 95 has an air pump air inlet 93 and an air pump air outlet 94. Specifically, one of the first air vent 51 and the second air vent 52 communicates with the air pump air outlet 94. The other of the first air port 51 and the second air port 52 communicates with the air pump air inlet 93. One of the third air outlet 53 and the fourth air outlet 54 communicates with the air inlet 18. The other of the third air vent 53 and the fourth air vent 54 communicates with the outside environment.

Specifically, the third air port 53 and one of the fourth air ports 54 of the reversing valve 50 communicate with the additional air inlet and outlet port 18A of the air inlet and outlet chamber 19 via a sealed air pipe, and thus communicate with the air inlet and outlet port 18, i.e., one end of the air path structure 85 communicates with the air inlet and outlet port 18. According to the foregoing, the steam valve 90 communicates with the outside. Specifically, the steam valve 90 includes a steam valve cavity 91. The other of the third and fourth air ports 53, 54 of the reversing valve 50 communicates with the steam valve chamber 91 so that the other end of the air path structure 85 communicates with the outside. The opening of the steam valve chamber 91 connected to the reversing valve 50 is not used for discharging steam, i.e. the steam valve 90 is provided with a separate air outlet for discharging steam, and the steam valve chamber 91 is always in communication with the external environment. Specifically, the steam valve 90 communicates with the air pump 95, the cooking space 32, and the external environment, respectively. It should be noted that, when the cooking space 32 is in the first air pressure state, the cooking space 32 is communicated with the steam valve 90 to discharge steam to the external environment, and the air pump 95 is communicated with the steam valve 90 to send external environment air into the cooking space 32. At this time, the exhaust passage of the cooking space 32 and the suction passage of the air pump 95 may not communicate inside the steam valve 90, that is, the exhaust passage of the cooking space 32 and the suction passage of the air pump 95 are different passages from each other in the steam valve chamber 91.

As shown in fig. 7 and 8, in some embodiments of the present application, the reversing valve 50 includes a valve body 55, and the valve body 55 is of hollow construction, constituting a valve cavity 55A. The valve body 55 is provided to the cover body 10 (specifically, the liner cover 12). The aforementioned first vent port 51, second vent port 52, third vent port 53, and fourth vent port 54 are provided to the valve body 55 and communicate with the valve inner chamber 55A. The valve spool 56 is disposed in the valve interior 55A and is movable in a first direction D1 relative to the valve body 55 between a first vent position (shown in fig. 8) and a second vent position (shown in fig. 7) in the valve interior 55A. It will be appreciated that movement of the valve spool 56 relative to the valve body 55 changes position (from the first venting position to the second venting position, or from the second venting position to the first venting position), i.e., the reversing valve 50 changes operating conditions.

The cooking appliance 100 is configured to: such that the reversing assembly 60 drives the valve spool 56 within the valve cavity 55A in the first direction D1 relative to the valve cavity 55A (i.e., the cover 10) between the first venting position and the second venting position. The specific manner of communication within the reversing valve 50 is described below.

As shown in fig. 7 and 8, the valve body 55 has a valve body first end 55C and a valve body second end 55D disposed opposite in the first direction D1. The valve body first end 55C is provided with a valve bore 55B. Wherein the valve spool 56 extends out of the valve bore 55B at least in the second vent position. The reversing valve 50 also includes a spool spring 57. A spool spring 57 is also disposed in the valve interior chamber 55A and is located between the valve body second end 55D and the spool 56. The spool spring 57 extends in the first direction D1. Preferably, the first direction D1 is a horizontal direction.

Specifically, the spool 56 includes a spool body 58, a first through hole 58B, a second through hole 58C, a first seal ring 59A, a second seal ring 59B, and a third seal ring 59C. The valve spool body 58 is disposed in the valve inner chamber 55A and is movable in the first direction D1 relative to the valve inner chamber 55A between a first vent position and a second vent position. The valve body 58 extends out of the valve hole 55B at least in the second ventilation position. The valve core body 58 includes a valve core inner cavity 58A, i.e., the valve core body 58 is hollow in structure. A first through hole 58B and a second through hole 58C are provided in the spool body 58 so that the valve inner chamber 55A communicates with the spool inner chamber 58A. The first through hole 58B and the second through hole 58C are spaced apart along the first direction D1, the first through hole 58B being adjacent the valve body first end 55C, the second through hole 58C being adjacent the valve body second end 55D. The first, second and third seal rings 59A, 59B and 59C are fitted around the outer periphery of the valve body 58 and sealingly contact the inner wall of the valve chamber 55A. The first seal ring 59A, the second seal ring 59B, and the third seal ring 59C are sequentially arranged in the first direction D1, the first seal ring 59A being closest to the valve body first end 55C. The first sealing ring 59A and the second sealing ring 59B are located at two sides of the first through hole 58B along the first direction D1, and the second sealing ring 59B and the third sealing ring 59C are located between the first through hole 58B and the second through hole 58C along the first direction.

On the basis of the above embodiment, the four vents of the valve main body 55 are arranged in the first direction D1 in the order of the first vent 51, the third vent 53, the second vent 52, and the fourth vent 54, wherein the first vent 51 is close to the first end 55C of the valve body, and the fourth vent 54 is close to the second end 55D of the valve body. It will be appreciated that the three sealing rings divide the valve interior 55A into four portions that are not in communication with each other, a first interior 55E between the first sealing ring 59A and the first end 55C of the valve body, a second interior 55F between the first sealing ring 59A and the second sealing ring 59B, a third interior 55G between the second sealing ring 59B and the third sealing ring 59C, and a fourth interior 55H between the third sealing ring 59C and the second end 55D of the valve body, respectively. It will be appreciated that as the valve core body 58 moves in the first direction D1, the positions of the three sealing rings within the valve cavity 55A change, such that the distribution of the four portions of the valve cavity 55A changes, and thus the abutting relationship of the four portions of the valve cavity 55A with the four vents of the valve body 55 changes, so that the communication relationship of the four vents may be changed.

Thus, the reversing valve 50 may be configured such that when the valve body 58 is in the second vent position (as shown in fig. 7), the first vent port 51 and the third vent port 53 are located between the second seal ring 59B and the third seal ring 59C in the first direction D1, and the second vent port 52 and the fourth vent port 54 are located on the side of the third seal ring 59C near the valve body second end 55D in the first direction D1. Thus, as shown in fig. 7, the first air vent 51 and the third air vent 53 communicate through the third inner chamber 55G, and the second air vent 52 and the fourth air vent 54 communicate through the fourth inner chamber 55H. It will be appreciated that, inside the reversing valve 50, the air paths connecting the first air port 51 and the third air port 53 and the air paths connecting the second air port 52 and the fourth air port 54 are independent of each other and do not communicate with each other.

The reversing valve 50 is further configured such that when the valve body 58 is in the first vent position (as shown in fig. 8), the first seal ring 59A and the second seal ring 59B are located on both sides of the first vent port 51 in the first direction D1, respectively, the second vent port 52 and the third vent port 53 are located between the second seal ring 59B and the third seal ring 59C in the first direction D1, and the third seal ring 59C is located on the side of the fourth vent port 54 near the valve body first end 55C. Thus, as shown in fig. 8, the first vent 51 communicates with the fourth vent 54 through the second inner chamber 55F, the first through hole 58B, the spool inner chamber 58A, the second through hole 58C, and the fourth inner chamber 55H, and the second vent 52 communicates with the third vent 53 through the third inner chamber 55G. It will be appreciated that, inside the reversing valve 50, the air paths connecting the first air vent 51 and the fourth air vent 54 and the air paths connecting the second air vent 52 and the third air vent 53 are independent of each other and do not communicate with each other.

In the illustrated embodiment, the first vent 51 communicates with the air pump air outlet 94, the second vent 52 communicates with the air pump air inlet 93, the third vent 53 communicates with the air inlet and outlet 18, and one of the fourth vents 54 communicates with the communication port 17. Thus, when the valve core body 58 is in the first ventilation position, the air pump 95 pumps air from the cooking space 32 via the air inlet/outlet 18 (as shown in fig. 10); when the valve body 58 is located at the second ventilation position, the air pump 95 blows air into the cooking space 32 via the air inlet and outlet 18 (as shown in fig. 9).

It will be appreciated that depending on the connection of the four vents of the reversing valve 50 to the air pump air inlet 93, the air pump air outlet 94, the steam valve 90, and the air inlet/outlet 18, when the valve core body 58 is in the first venting position, the air passage arrangement 85 is in one of the state of air flow from the air inlet/outlet 18 into the cooking space 32 and out of the cooking space 32; when the valve core main body 58 is in the second ventilation position, the air passage structure 85 is in the other of the state in which the air flow enters the cooking space 32 from the air inlet/outlet port 18 and the state in which the air flow exits the cooking space 32. A specific implementation of the reversing assembly 60 is described below.

As shown in fig. 5 to 10, the reversing assembly 60 is connected to and acts on the reversing valve 50 (specifically, the spool 56) and the communication port opening and closing assembly 40. In the illustrated embodiment, the cooking appliance 100 is configured to: when the reversing assembly 60 is in the ventilating operation state, the reversing assembly 60 causes the communication port opening and closing assembly 40 to open the communication port 17 (as shown in fig. 5), and causes the first ventilating port 51 to communicate with the third ventilating port 53, and the second ventilating port 52 to communicate with the fourth ventilating port 54 (as shown in fig. 7 and 9); when the reversing assembly 60 is in the sealed operation state, the reversing assembly 60 causes the communication port opening and closing assembly 40 to block the communication port 17 (as shown in fig. 6), and causes the first air port 51 to communicate with the fourth air port 54, and the second air port 52 to communicate with the third air port 53 (as shown in fig. 8 and 10).

As shown in fig. 5 and 7, when the reversing assembly 60 is in the ventilating operation state, the communication port 17 is opened, and the cooking space 32 is in communication with the steam valve 90, that is, with the external environment, in the first air pressure state. At this time, the first air vent 51 communicates with the third air vent 53, and the second air vent 52 communicates with the fourth air vent 54, and if the air pump 95 is operated, the air pump 95 draws in ambient air through the steam valve inner chamber 91 and discharges the ambient air into the cooking space 32, so that the cooking space 32 can be cooled by the ambient air. As shown in fig. 6 and 8, when the reversing assembly 60 is in the sealed operation state, the communication port 17 is blocked, and the cooking space 32 is blocked from the steam valve 90, that is, from the external environment. At this time, the first air vent 51 communicates with the fourth air vent 54, the second air vent 52 communicates with the third air vent 53, and if the air pump 95 is operated, the air pump 95 pumps out the air in the cooking space 32 and then discharges the air to the environment through the steam valve inner chamber 91, thereby reducing the air pressure in the cooking space 32, that is, making the negative pressure in the cooking space 32 with respect to the environment, in the second air pressure state.

In some embodiments of the present application, the reversing assembly 60 includes a power supply 80 and an intermediate power transfer device 70 coupled thereto, the power supply 80 being configured to provide power to actuate the communication port opening and closing assembly 40 and the airflow reversing device 50, the intermediate power transfer device 70 being coupled to the communication port opening and closing assembly 40 and the airflow reversing device 50 for transferring power provided by the power supply 80 to the communication port opening and closing assembly 40 and the airflow reversing device 50. The intermediate power transmission device 70 has a ventilation operation state and a sealing operation state.

Specifically, one of the functions of the reversing assembly 60 is to implement the movement of the spool 56 in the air flow reversing device 50 in the first geometric dimension, and the other function is to implement the movement of the push rod 41 in the communication opening and closing assembly 40 in the second geometric dimension, and the two movements need to be coordinated.

In the present application, there are various ways in which the construction of the reversing assembly 60 can be made, and several specific embodiments of the reversing assembly 60 are described below.

As previously described, the reversing assembly 60 is movable relative to the cover 10 and is coupled to the valve core 56 and the pushrod 41, respectively, to act on the valve core 56 and the pushrod 41 to perform the two functions previously described for the reversing assembly 60.

In the first embodiment shown in fig. 11 to 14, the intermediate power transmission device 70 is configured to be rotatable about a rotation axis extending in the second direction D2 under the drive of the power supply device 80. Wherein the intermediate power transmission arrangement 70 comprises a transmission body 70A. The transmission body 70A has a ventilation operation state and a sealing operation state.

In this embodiment, the drive body 70A is used to drive the spool 56 and pushrod 41 in two different geometric dimensions. Specifically, the drive body 70A includes a first drive surface 79 and a second drive surface 71.

The first drive surface 79 is at least a portion of the circumferential surface of the drive body 70A for connection to and for acting on the airflow reversing device 50. The different positions of the first transmission surface 79 in the circumferential direction are at different radial distances from the axis of rotation. Thus, the first transmission surface 79 protrudes outwards in the radial direction, so that when the transmission main body 70A rotates, the first transmission surface 79 changes the distance between the spool 56 and the rotation axis extending in the second direction D2, that is, the spool 56 moves in the horizontal direction, so as to switch the air flow channel inside the reversing valve 50.

The second transmission surface 71 is a further part of the surface of the transmission body 70A for connecting to and acting on the communication port opening and closing assembly 40. The second transmission surface 71 has a second transmission surface first end 71A and a second transmission surface second end 71B which are disposed opposite in the second direction D2, the position of the second transmission surface first end 71A in the second direction being different from the position of the second transmission surface second end 71B in the second direction D2, i.e., the second transmission surface 71 has a high end 71B and a low end 71A having a height difference in the second direction D2, and the high end 71B and the low end 71A have a distance in the horizontal direction. When the transmission body 70A rotates, the height of the portion of the second transmission surface 71 connected to the communication port opening and closing assembly 40 in the second direction D2 changes, thereby moving the communication port opening and closing assembly 40 in the second direction D2.

A second transmission surface intermediate portion 71C is provided between the second transmission surface first end portion 71A and the second transmission surface second end portion, and a position of the second transmission surface intermediate portion 71C in the second direction D2 varies depending on a circumferential position of the second transmission surface intermediate portion 71C. The high end 71B and the low end 71A of the second transmission surface 71 are smoothly connected by a second transmission surface intermediate portion 71C. In some possible embodiments, the second drive surface 71 may be configured as a combination of one or more of a chamfer, a curved surface, a stepped surface. The second transmission surface 71 may be an outer surface of the intermediate power transmission device 70, or may be an inner surface of the intermediate power transmission device 70 (e.g., an inner wall of a chute).

It will be appreciated that in the projection of the transmission body 70A in the second direction, the second transmission surface 71 is located in a first region of the transmission body 70A in the circumferential direction, and the first transmission surface 79 is located in a second region of the transmission body 70A in the circumferential direction. The first region and the second region at least partially overlap or do not overlap each other. The first and second transmission surfaces 79, 71 are respectively applied to the reversing valve 50 and the communication port opening and closing assembly 40 in two geometric dimensions, and in some embodiments, the planes of the application surfaces of the first and second transmission surfaces 79, 71 are perpendicular to each other.

In the present embodiment, the intermediate power transmission device 70 further includes a link mechanism 61. The link mechanism 61 is used to transmit the power of the transmission main body 70A (specifically, the second transmission surface 71) to the push rod 41.

Specifically, as shown in fig. 3, 5, and 6, the link mechanism 61 includes a link 62, and the link 62 is connected to and acts on the push rod 41. The cooking appliance 100 is configured such that when the reversing assembly 60 is in the sealed operating state, the link 62 is located at the first link position such that the push rod 41 is located at the blocking position; when the reversing assembly 60 is in the venting mode, the link 62 is in the second link position such that the pushrod 41 is in the open position. The reversing assembly 60 drives the link 62 to move in the third geometric dimension, i.e., the reversing assembly 60 drives the link 62 to move between the first link position and the second link position. As previously described, the reversing assembly 60 drives the spool 56 in the first geometric dimension. Preferably, when the cover 10 is in a state of covering the pot body 30, the included angle between the projection line of the first geometric dimension and the third geometric dimension on the horizontal plane is 0 to 180 degrees. More preferably, when the cover 10 is in a state of covering the pot body 30, the included angle between the projection line of the first geometric dimension and the third geometric dimension on the horizontal plane is 0 to 120 degrees. By the arrangement, the reversing assembly 60 can be installed compactly, and the linkage reaction is quick and accurate.

More specifically, the link 62 is configured to be rotatable about a link rotation axis, wherein the link rotation axis extends in a horizontal direction. For example, the link 62 is mounted to the liner cap 12 by a horizontal second pin 66, with the link 62 being rotatable about the second pin 66 relative to the liner cap 12, i.e., the axis of the second pin 66 is the link rotation axis. The link 62 has oppositely disposed link first and second ends 63, 64, with the link second end 64 being connected to and acting upon the push rod sleeve 42. The intermediate power transmission device 70 changes the position of the link second end 64 in the vertical direction by changing the position of the link first end 63 in the vertical direction to rotate the link 62.

The power supply device 80 acts on the intermediate power transmission device 70 for moving the intermediate power transmission device 70 relative to the cover 10 to switch the intermediate power transmission device 70 to drive the link 62 between the first link position and the second link position, thereby causing the push rod 41 to be located in the blocking position or the open position.

The cooking appliance 100 is configured to: when the reversing assembly 60 is in the sealed operating condition, the relatively convex portion of the first drive surface 79 of the intermediate power transmission device 70 abuts the valve spool 56 to assume the first venting position; the upper end 71B of the second drive surface supports the link first end 63 such that the link second end 64 is at a relatively low position, driving the push rod 41 to a relatively low blocking position; the air pump 95 pumps air into the cooking space 32, and the cooking space 32 is in the second air pressure state. When the intermediate power transmission device 70 is in the vent operating state, the non-protruding portion of the first transmission surface 79 abuts the valve spool 56 to be in the second vent position; the lower end 71A of the second drive surface supports the link first end 63 such that the link second end 64 is located at a relatively high position such that the push rod 41 is located at a relatively high open position.

As shown in fig. 11 and 12, the power supply 80 is preferably configured as a motor 81. The motor 81 is provided with a motor mounting portion 82, and the motor 81 is mounted in the cover 10 by the motor mounting portion 82. It will be appreciated that the motor 81 is electrically connected to and operates under the control of the control device.

Preferably, the transmission body 70A of the intermediate power transmission device 70 includes a transmission portion 72, a boss portion 73, and a slope portion 74. The transmission portion 72 is configured to be rotatable about a rotation axis, and at least a portion of an outer peripheral surface of the transmission portion 72 is configured as an arc, the rotation axis passing through a center of the arc. The boss 73 is connected to the arcuate circumferential surface of the transmission portion 72, and projects outward in the radial direction of the arc. The ramp portion 74 is connected to the transmission portion 72, the ramp portion 74 being provided with the second transmission surface 71. Wherein the outer peripheral surface of the boss 73 and a portion of the arcuate peripheral surface of the transmission portion 72 that is circumferentially adjacent to the boss 73 constitute a first transmission surface 79. The transmission portion 72, the boss 73, and the inclined surface portion 74 may be integrally formed such that the transmission body 70A is a single piece.

Specifically, the transmission portion 72 is connected to an output shaft of the motor 81, and is rotatable by the drive of the motor 81. The transmission portion 72 is generally cylindrical in configuration. The rotation axis of the transmission portion 72 extends in the vertical direction. The axis of rotation of the transmission 72, i.e. the central axis of its cylinder. As shown in fig. 12, the circumferential surface of the transmission portion 72 (i.e., the circumferential surface of the cylinder thereof) includes a first circumferential surface 75, a second circumferential surface 76, and a third circumferential surface 77, which are sequentially arranged in the circumferential direction. The boss 73 is provided to the second circumferential surface 76, and projects outward in the radial direction of the cylinder. It will be appreciated that the radial dimension of the drive body 70A at the boss 73 is greater than the radial dimension at the first circumferential surface 75. The chamfer portion 74 is provided to the third circumferential surface 77. Optionally, the ramp portion projects outwardly in a radial direction of the cylinder. Preferably, the axial end surface of the ramp portion 74 is configured as the second transmission surface 71.

Wherein when the lobe outer peripheral surface 73A contacts the spool 56, the spool 56 is in a first venting position relative to the valve body 55 while the higher end 71B of the second drive surface 71 supports the connecting rod first end 63. When the first circumferential surface 75 contacts the spool 56, the spool 56 is in the second venting position relative to the valve body 55 while the lower end 71A of the second drive surface 71 supports the connecting rod first end 63.

In the first embodiment shown in fig. 12, the lower end 71A of the second transmission surface 71 is adjacent to the boss 73, and the upper end 71B of the second transmission surface 71 is adjacent to the first circumferential surface 75. As best seen in fig. 12, the lower end 71A of the second drive surface 71 is circumferentially spaced about 180 degrees from the first circumferential surface 75 and the upper end 71B of the second drive surface 71 is circumferentially spaced about 180 degrees from the boss 73. The motor 81 drives the transmission portion 72 to rotate, wherein when the intermediate power transmission device 70 is in the ventilating operation state, that is, when the transmission portion 72 is at the ventilating operation angle, as shown in fig. 13, the first circumferential surface 75 contacts the spool 56 such that the spool 56 protrudes from the valve inner chamber 55A, while the lower end 71A of the second transmission surface 71 supports the link first end 63; when the reversing assembly 60 is in a sealing operating condition, i.e., the transmission portion 72 is at a sealing operating angle (about 90-120 degrees of counterclockwise rotation of the transmission portion 72 relative to the venting operating angle), as shown in fig. 14, the boss 73 contacts the valve spool 56 and pushes the valve spool 56 into the valve cavity 55A, while the upper end 71B of the second transmission surface 71 supports the link first end 63.

In the preferred embodiment of this embodiment, the link first end 63 is provided with a first pin 65 and the second transmission surface 71 supports the link first end 63 by supporting the first pin 65. That is, the first pin 65 is always located above the second transmission surface 71, and when the transmission body 70A rotates, the first pin 65 contacts different portions of the second transmission surface 71, so that the height (position in the D2 direction) of the first pin 65 is changed, and thus the height of the link first end 63 is changed. The first pin 65 is rotatable relative to the link 62, so that rolling friction is generated between the first pin 65 and the second transmission surface, and friction force is small.

It will be appreciated that the four vents of the reversing valve 50 are connected to the air pump inlet 93, the air pump outlet 94, the steam valve 90 and the air inlet/outlet 18 in an adjustable manner. For example, in an embodiment not shown, the first air vent 51 of the reversing valve 50 may be in communication with the air pump air inlet 93 and the second air vent 52 of the reversing valve 50 may be in communication with the air pump air outlet 94, at which time the low end 71A of the second drive surface 71 is swapped with the high end 71B, as may the first and second air pressure conditions of the cooking space 32.

Alternatively, the third air port 53 of the reversing valve 50 is communicated with the steam valve 90, and the fourth air port 54 of the reversing valve 50 is communicated with the air inlet and outlet port 18, and at this time, the low end 71A and the high end 71B of the second transmission surface 71 are exchanged, so that the first air pressure state and the second air pressure state of the cooking space 32 can be realized.

Alternatively, the first air vent 51 of the reversing valve 50 is communicated with the air pump air inlet 93, the second air vent 52 of the reversing valve 50 is communicated with the air pump air outlet 94, the third air vent 53 of the reversing valve 50 is communicated with the steam valve 90, the fourth air vent 54 of the reversing valve 50 is communicated with the air inlet 18, and the rotating body 70A maintains the structure in the illustrated example, so that the first and second air pressure states of the cooking space 32 can be realized.

The cooking process of the cooking appliance 100 sequentially includes the following steps:

a water absorbing process for soaking the solid food material in warm water to absorb water before the food material in the pot liner 31 reaches the boiling temperature;

A heating step for heating the food material in the inner container 31 to a boiling temperature;

A boiling maintaining step for maintaining the boiling temperature of the food material in the pot liner 31;

a rice stewing process for heating the food material in the inner pot 31 for a short time in the case that the free moisture is almost not contained in the inner pot 31;

a heat preservation process for preserving heat of the food in the pot container 31 after cooking the cooked food.

Preferably, in the water absorbing process, the cooking appliance 100 is configured to perform the following steps:

s21, the reversing assembly 60 is in a sealed working state, the air pump 95 is operated for a first water absorption preset working time period t21, so that air is pumped from the cooking space 32, negative pressure is generated in the cooking space 32, and the air pump is in a second air pressure state;

S22, the reversing assembly 60 is in a ventilation working state, the air pump 95 stops working and the second water absorption preset working time period t22 is reached, so that the cooking space 32 is restored to normal pressure and is in a first air pressure state;

S23, repeating the steps S21 and S22 until the preset water absorption time period is reached or the temperature value sensed by the temperature sensor (the lower temperature sensor or the top temperature sensor) reaches the preset water absorption temperature T2.

In the water suction process, the cooking space 32 is repeatedly vacuumized, the internal pressure of the cooking cavity is changed rapidly, the rice can be rolled and absorbed water rapidly, the rice grains are heated more uniformly, the rice grain gelatinization is facilitated, the rice is cooked thoroughly, and the rice is inflated more. It is considered that the change in air pressure causes the rice grains to move relatively or collide with each other, so that gaps are formed between the rice grains, and the rice is fluffy.

Preferably, the first preset operating period t21 for water absorption is 20 to 120 seconds. More preferably, the first preset operating period t21 of water absorption is 20 to 60 seconds. Preferably, in step S21, after the air pump 95 is operated for the first water suction preset operation period t21, the negative pressure of the cooking space 32 is-5 to-20 kPa (i.e., 5 to 20kPa lower than the ambient air pressure). Preferably, the second preset operating period t22 for water absorption is 20 to 120 seconds. More preferably, the second preset operating period t22 of water absorption is 20 to 60 seconds. Preferably, the preset water absorption temperature T2 does not exceed 90 ℃. More preferably, the preset water absorption temperature T2 is 30 to 90 ℃.

Preferably, during the heating process and/or the boiling maintaining process, the cooking appliance 100 is configured to put the reversing assembly 60 in a ventilating operation state and to operate the air pump 95 to blow cold air into the cooking space 32, so that it is possible to prevent overflow.

Preferably, in the rice stewing process, the cooking appliance 100 is configured to perform the following steps:

S41, enabling the reversing assembly 60 to be in a sealing working state, enabling the air pump 95 to work for a first stewing preset working time period t41 so as to suck air from the cooking space 32 and enable the cooking space 32 to generate negative pressure;

S42, the reversing assembly 60 is in a ventilation working state, and the air pump 95 is operated for a second rice stewing preset working time period t42 so as to blow air into the cooking space 32, so that the temperature of the cooking space 32 is reduced;

s43, repeating the steps S41 and S42 until the preset stewing time period T4 is reached or the temperature value sensed by the temperature sensor (the lower temperature sensor or the top temperature sensor) reaches the preset stewing temperature T4.

In the rice stewing process, heat in the inner part of the pot liner 31 is taken away by air suction, cold air is further blown into the pot liner 31 by air blowing, and hot air is discharged. Because the heat conductivity coefficients of the rice and the pot liner 31 are different, a temperature difference is formed between the rice and the pot liner 31, and the rapidly-changed temperature difference can cause the expansion and contraction of the rice, so that the rice and the pot liner 31 form a critical separation or separation state, and the problem of sticking to the pot can be solved. Accordingly, bladder 31 may be configured without a non-stick coating on the inner surface.

Preferably, the first braised rice preset operation time period t41 is 20to 120 seconds. More preferably, the first braised rice preset operation time period t41 is 20to 60 seconds. Preferably, in step S41, after the air pump is operated for a preset operation time period t41 for the first braised rice, the negative pressure of the cooking space is-5 to-20 kPa. Preferably, the second braised rice preset operation time t42 is 20to 120 seconds. More preferably, the second braised rice preset operation period t42 is 20to 60 seconds. Preferably, the preset rice stewing temperature T4 is 90 ℃ to 103 ℃. Preferably, the preset braised time period t4 is 4 to 10 minutes.

In the heat-retaining process, the cooking appliance 100 is preferably configured to perform the following steps:

s51, the reversing assembly 60 is in a sealed working state, and the air pump 95 is operated for a first heat preservation preset working time period t51 so as to pump air from the cooking space 32 to generate negative pressure in the cooking space 32;

S52, the reversing assembly 60 is in a ventilation working state, the air pump 95 is operated for a second heat preservation preset working time period t52, and air is blown into the cooking space 32, so that the temperature of the cooking space 32 is reduced;

S53, repeating the steps S51 and S52 until the temperature value sensed by the temperature sensor is less than or equal to the preset heat preservation temperature T5.

In the heat-insulating process, heat inside the inner container 31 is taken away by air suction, cool air is further blown into the inner container 31 by blowing, and hot air is discharged at the same time, similarly to the rice stewing process. Because the heat conductivity coefficients of the rice and the pot liner 31 are different, a temperature difference is formed between the rice and the pot liner 31, and the rapidly-changed temperature difference can cause the expansion and contraction of the rice, so that the rice and the pot liner 31 form a critical separation or separation state, and the problem of sticking to the pot can be solved. Accordingly, bladder 31 may be configured without a non-stick coating on the inner surface.

Preferably, the first heat preservation preset operating time period t51 is 20 to 120 seconds. More preferably, the first heat preservation preset operating time period t51 is 20 to 60 seconds. Preferably, in step S51, after the air pump 95 is operated for the first heat-preserving preset operation period t51, the negative pressure of the cooking space 32 is-5 to-20 kPa. Preferably, the second heat preservation preset operating time period t52 is 20 to 120 seconds. More preferably, the second thermal insulation preset operating time period t52 is 20 to 60 seconds. Preferably, the preset soak temperature T5 is 65 ℃ to 75 ℃.

Preferably, in the heat-insulating process, the cooking appliance 100 is configured to put the reversing assembly 60 in a sealed operation state and to operate the air pump 95 to form a negative pressure in the cooking space 32. That is, the cooking space 32 is set to negative pressure in the heat preservation process, which is advantageous for keeping rice fresh. The cooking appliance 100 may periodically start the air pump 95 according to the sealing property of the product, and intermittently pump air to maintain the negative pressure in the cooking space 32.

In the heat-insulating step, either or both of the operations of steps S51, S52, and S53 and the operation of simply pumping negative pressure may be performed. In the case where both are performed, the operations of steps S51, S52 and S53 may be performed first, and the operation of simply evacuating the air may be performed after the temperature sensed by the temperature sensor reaches the preset soak temperature T5.

As shown in fig. 15 and 16, in comparison with the first embodiment, in the second embodiment according to the present application, the power supply device 90, the transmission body 70A, and the link mechanism 61 of the reversing assembly 160 are the same as those in the first embodiment, and the reversing assembly 160 further includes a first gear 188 and a second gear 189. The first gear 188 is coaxially connected with the output shaft of the motor 81 and is rotatable under the driving of the motor 81, and the rotation axis thereof extends along the second direction D2. The second gear 189 is meshed with the first gear 188 and is coaxially coupled with the transmission body 70A (specifically, the transmission portion 72). Thus, the motor 81 will drive the first gear 188 to rotate, the first gear 188 drives the second gear 189 to rotate, and the second gear 189 drives the transmission body 70A (specifically, the transmission portion 72) to rotate. Wherein the diameter of the first gear 188 is greater than the diameter of the second gear 189 and/or the number of teeth of the first gear 188 is greater than the number of teeth of the second gear 189.

For example, Z1 is the number of teeth of the first gear 188 and Z2 is the number of teeth of the second gear 189; d1 is the diameter of the first gear 188 and d2 is the diameter of the second gear 189; n1 is the rotational speed of the first gear 188 and n2 is the rotational speed of the second gear 189. The transmission ratio i=z2/z1=d2/d1=n1/n 2. The principle of gear transmission is as follows: the larger the gear ratio, the larger the torque, the smaller the gear ratio and the smaller the torque. In a second embodiment, Z1 is greater than Z2, and d1 is greater than d2, so i is less than 1. The smaller the transmission ratio, the smaller the torque of the motor 81 and thus the lower the cost of the motor 81.

The non-introduced part of the second embodiment refers to the description of the first embodiment.

In the third embodiment shown in fig. 17 to 20, the intermediate power transmission device 270 is configured to be movable in the first direction D1 relative to the cover 10 by the drive of the power supply device 280. The intermediate power transmission device includes a transmission main body 270A and a link mechanism 61, wherein the transmission main body 270A is provided with a connection portion 273E and a second transmission surface 271. The connection portion 273E is for connecting to and acting on the air flow reversing device 50, specifically, moving in the first direction D1 to push the spool 56. The second transmission surface 271 is for connection to and action on the communication port opening and closing assembly 40. Wherein the second transmission surface 271 acts on the communication port opening and closing assembly 40 by acting on the link mechanism 61, similarly to the first embodiment. The structure and function of the linkage 61 will not be described here.

The second transmission surface 271 has a second transmission surface first end 271A and a second transmission surface second end 271B disposed opposite in the first direction D1, and the position of the second transmission surface first end 271A in the second direction D2 is different from the position of the second transmission surface second end 271B in the second direction D2. Thus, the second transmission surface first end 271A and the second transmission surface second end 271B have a difference in distance in the vertical direction from the horizontal direction. A second transmission surface intermediate portion 271C is provided between the second transmission surface first end portion 271A and the second transmission surface second end portion, and a position of the second transmission surface intermediate portion 271C in the second direction D2 varies depending on a circumferential position of the second transmission surface intermediate portion 271C. The high end 271B and the low end 271A of the second transfer surface 271 are smoothly connected by a second transfer surface intermediate portion 271C. In some possible embodiments, the second transmission surface 271 may be configured as a combination of one or more of a chamfer, a curved surface, a stepped surface, and the like. The second transmission surface 271 may be an outer surface of the intermediate power transmission device 270 or an inner surface (e.g., an inner wall of a chute).

The cooking appliance 100 is configured to: when the reversing assembly 260 is in the sealed operating state, the connection portion 273E of the intermediate power transmission device 270 is close to the reversing valve 50 to push the valve core 56 and compress the valve core spring 57, so that the valve core 56 is in the first ventilation position; the higher end 271B of the second drive surface 271 supports the link first end 63 such that the link second end 64 is relatively low, with the push rod 41 in a relatively low blocking position; the air pump 95 pumps air into the cooking space 32, and the cooking space 32 is in the second air pressure state. When the intermediate power transmission device 270 is in the ventilation operation state, the connection portion 273E is away from the reversing valve 50, and the spool 56 extends from the valve inner chamber 55A to release the spool spring 57 so that the spool 56 is in the second ventilation position; the lower end 71A of the second drive surface 271 supports the link first end 63 such that the link second end 64 is relatively high, such that the push rod 41 is in a relatively high open position.

As shown in fig. 19 and 20, in particular, the intermediate power transmission device 270 includes a slider seat 272 and a slider 273. The slider seat 272 is fixed to the liner cover 12 by a slider seat mounting portion 272A. The slider seat 272 includes a slider seat guide 277 extending along the first direction D1. The slider 273 is for moving in the first direction D1 under the drive of the power supply 280. The slider 273 includes a slider guide 278, the slider guide 278 being connected to a slider seat guide 277 and being movable relative to the slider seat guide 277 in a first direction D1. The slider 273 is provided with a connecting portion 273E and a second transmission surface 271. In the present embodiment, the upper surface of the slider 273 is configured as the second transmission surface 271. Wherein the lower end 271A of the second drive surface 271 is proximate the spool 56. One end of the slider 273, which is used to be close to the direction valve 50, becomes a connection portion 273E.

The intermediate power transmission device 270 further includes a biasing element 274 for applying a biasing force to the slider 273 in a first direction D1, wherein the first direction D1 includes two opposite directions, and the power supply device 280 and the biasing element 274 apply a force to the slider 273 in the two opposite directions of the first direction D1, respectively. The biasing element 274 is, for example, an elastic restoring element, which is configured to be elastically deformable in the first direction D1, disposed between the slider 273 and the slider seat 272. The particular biasing element 274 employs a slider spring 274. The slider spring 274 extends in the first direction D1. One end of the slider spring 274 is connected to one end of the power supply 280 of the slider 273, and the other end of the slider spring 274 is connected to one end of the slider seat 272 near the direction valve 50. When the reversing assembly 260 is in the sealed operating state, the slide spring 274 is compressed. When the power supply 280 is not operated, the slider 273 is restored to its original position by the slider spring 274, that is, the reversing assembly 260 is in the ventilating operation state.

The power supply 280 is configured as a push-pull electromagnet 281, the push-pull electromagnet 281 being movable in the first direction D1 with respect to the cover 10. It will be appreciated that the push-pull electromagnet 281 is electrically connected to the control device to operate under the control of the control device. The slider 273 is located between the valve core 56 and the push-pull electromagnet 281. When the push-pull electromagnet 281 is operated, the push-pull electromagnet 281 moves in the first direction D1 toward the slider seat 272 (to the left in the drawing as shown in fig. 18) and pushes the slider 273, so that the slider 273 pushes the valve spool 56 in the first direction D1 (e.g., to the left in the drawing) and the higher second transmission surface second end 271B of the second transmission surface 271 supports the link first end 63, that is, the reversing assembly 260 is in a sealed operation state; when the push-pull electromagnet 281 is not in operation, the push-pull electromagnet 281 moves away from the slider seat 272 in the first direction D1 (moves to the right in the drawing as shown in fig. 17), the spool 56 moves to the second venting position under the influence of the spool spring 57, and pushes the slider 273 to move toward the push-pull electromagnet 281 in the first direction D1 (moves to the right in the drawing), so that the lower end 271A of the second transmission surface 271 supports the link first end 63, i.e., the reversing assembly 260 is in the venting operation.

In some embodiments of the application, the slider 273 may be mounted inside the slider seat 272, i.e. the slider seat 272 is a hollow structure having an inner cavity 275 for receiving the slider 273, i.e. the slider 273 is movable within the slider seat 272 in the first direction D1.

As shown in fig. 19 and 20, the slider seat 272 is generally configured in a four sided, box-like, surrounding box-like shape having two slider seat side walls 276A, one slider seat end wall 276B and a slider seat bottom wall 276C, the side walls 276A, end walls 276B and bottom wall 276C surrounding the slider seat interior cavity 275. The slide spring 274 is received in the slide mount cavity 275. The end of the slider 273 remote from the reversing valve 50 is provided with a downwardly projecting slider projection 279, and the slider projection 279 is also received in the slider seat interior cavity 275 so as to be connectable with the slider spring 274. On the side in the second direction D2 away from the shoe bottom wall 276C, the shoe side wall 276A is higher than the shoe side wall 276B, so that the two shoe side walls 276A sandwich the shoe 273. The slide holder side wall 276A is provided with a slide groove 277 extending in the first direction D1, and the slide 273 is provided with a support pin 278 extending in the horizontal direction and perpendicular to the first direction D1, the support pin 278 being accommodated in the slide groove 277 and movable relative to the slide groove 277 in the first direction D1. Accordingly, the slide groove 277 supports the slider 273 by the support pin 278 and allows the other portions of the slider 273 than the slider protrusion 279 to be located above the slider seat side wall 276B, so that the slider seat 272 can stably support the slider 273 and the slider 273 can move relative to the slider seat 272 in the first direction D1.

It will be appreciated that in the third embodiment, the first air vent 51 of the reversing valve 50 may be communicated with the air pump air inlet 93, the second air vent 52 of the reversing valve 50 may be communicated with the air pump air outlet 94, and the low end 271A and the high end 271B of the second transmission surface 271 may be exchanged, so that both the negative pressure and the normal pressure states of the cooking space 32 may be realized.

It will be appreciated that in the third embodiment, the third air port 53 of the reversing valve 50 may be communicated with the steam valve 90, the fourth air port 54 of the reversing valve 50 may be communicated with the air inlet and outlet port 18, and the first air pressure state and the second air pressure state of the cooking space 32 may be achieved by exchanging the low end 271A and the high end 271B of the second transmission surface 271.

It will be appreciated that in the third embodiment, the first air vent 51 of the reversing valve 50 may be communicated with the air pump air inlet 93, the second air vent 52 of the reversing valve 50 may be communicated with the air pump air outlet 94, the third air vent 53 of the reversing valve 50 may be communicated with the steam valve 90, and the fourth air vent 54 of the reversing valve 50 may be communicated with the air inlet 18, so that the first air pressure state and the second air pressure state of the cooking space 32 may be realized.

The non-introduced portion of the third embodiment refers to the description of the first embodiment.

In the fourth embodiment shown in fig. 21 to 26, the intermediate power transmission device 370 is configured to be movable in the second direction D2 relative to the cover 10 by the drive of the power supply device 380. The intermediate power transmission device 370 includes a transmission body 370A and a link mechanism 61, wherein the transmission body 370A is provided with a connection portion 376 and a first transmission surface 379, the connection portion 376 being for connecting to and acting on the communication port opening and closing assembly 40, the first transmission surface 379 being for connecting to and acting on the air flow reversing device 50. The first transmission surface 379 has a first transmission surface first end 379A and a first transmission surface second end 379B disposed opposite in the second direction D2, the position of the first transmission surface first end 379A in the first direction D1 being different from the position of the first transmission surface second end 379B in the first direction D1, or the position of the first transmission surface first end 379A in the second direction D2 being different from the position of the first transmission surface second end 379B in the second direction D2, i.e. the first transmission surface first end 379A and the first transmission surface second end 379B have a height difference. The structure and function of the link mechanism 61 are the same as those in the first embodiment, and will not be described here again.

The cooking appliance 100 is configured to: when the intermediate power transmission device 370 is in the sealed operating state, the first transmission surface 379 acts on the valve spool 56 to compress the valve spool spring 57 to place the valve spool 56 in the first vent position; the connecting portion 376 supports the first end 63 of the connecting rod to a higher position, so that the second end 64 of the connecting rod is located at a relatively lower position, and drives the push rod 41 to be located at a relatively lower blocking position, and the air pump 95 pumps air into the cooking space 32, so that the cooking space 32 is in a second air pressure state. When the intermediate power transmission device 370 is in the vent operating state, the first transmission surface 379 acts on the spool 56 to release the spool spring 57 to place the spool 56 in the second vent position; the connecting portion supports the link first end 63 to a lower position such that the link second end 64 is relatively high, such that the push rod 41 is in a relatively high open position.

Specifically, the reversing assembly 360 includes a first reversing portion 361 and a second reversing portion 362. The first reversing section 361 and the second reversing section 362 are aligned in the second direction D2. The first reversing portion 361 is fixed to the cover 10 (e.g., the liner cover 12), and the second reversing portion 362 is configured to be movable relative to the first reversing portion in the second direction. The power supply 380 is configured as an electromagnet 377. The electromagnet 377 is mounted to one of the first reversing portion 361 and the second reversing portion 362, and the other of the first reversing portion 361 and the second reversing portion 362 contains a magnetic substance. The intermediate power transmission device 370 is provided in the second reversing portion 362.

For example, the first reversing section 361 is located above the second reversing section 362. When the electromagnet 377 is energized, the first reversing portion 361 and the second reversing portion 362 attract each other, so that the intermediate power transmission device 370 follows the second reversing portion 362 to move upward, thereby raising the link first end 63 (as shown in fig. 22). When the electromagnet 377 is de-energized, the intermediate power transmission device 370 may return to its original position by its own weight (as shown in fig. 21). It will be appreciated that the electromagnet 377 is electrically connected to the control device to operate under the control of the control device.

As shown in fig. 21 and 22, the transmission body 370A includes a connection pin 376 as a connection portion 376 and a slope portion 372. The connecting pin 376 connects the link first end 63. The ramp 372 includes a first drive surface 379 that is inclined relative to the horizontal, the second direction D2, and the first direction D1, the first drive surface 379 being for abutting the spool 56. Alternatively, the first transmission surface 379 may be disposed below the spool 56. As shown in fig. 22, after the intermediate power transmission device 370 is raised (reversing assembly 360 is in a sealed operating condition), the lower end 379A of the first transmission surface 379 acts on the valve spool 56, moving the valve spool 56 to the first venting position. As shown in fig. 21, after the intermediate power transmission device 370 is lowered (the reversing assembly 360 is in the vent operational state), the high end 379B of the first drive surface 79 contacts the valve spool 56, and the valve spool 56 moves to the second vent position.

As a preferred embodiment in this example, as shown in fig. 21 and 22, the first reversing portion 361 includes a magnetic substance, and the second reversing portion 361 includes an electromagnet 377. As shown in fig. 23 and 24, the first reversing portion 361 includes an iron piece 381, an iron piece holder 382, and an iron piece holder cover 383. Iron piece 381 is configured to be attracted to electromagnet 377. The iron block holder 382 is used to carry the iron block 381. The iron block bracket cover 383 is fixed to the liner cover 12 by a bracket mounting portion 384 for mounting the iron block bracket 382. For example, the iron block holder 382 and the iron block holder cover 383 each comprise a cylindrical structure, which can be connected to each other by a screw pair, thereby firmly mounting the iron block 381 to the liner cover 12.

Specifically, as shown in fig. 25 and 26, the transmission main body 370A includes a reversing mechanism main body 371, a connecting pin 376, and a slope portion 372. The reversing mechanism body 371 is provided with a body groove 373. The electromagnet 377 is disposed in the body recess 373 and is connected to the reversing mechanism body 371 by a bolt 374. The electromagnet 377 obtains power through the plug 377A. The connection pin 376 and the ramp 372 are each provided to the reversing mechanism body 371, for example, both are provided to opposite sides of the reversing mechanism body 371. The inclined surface 372 is generally configured in a triangular prism shape, and its axis extends in the horizontal direction. One side of the triangular prism is connected to the reversing mechanism main body 371, and of the other two sides, the obliquely upward side serves as the first transmission surface 379. The beveled portion 372 further includes a beveled downward side 375, the side 375 having a high end 375B and a low end 375A.

Preferably, one of the intermediate power transmission device 370 and the cover 10 is provided with a slide rail extending in the second direction D2, and the other of the intermediate power transmission device 370 and the cover 10 is provided with a slide groove extending in the second direction D2, in which the slide rail is provided and movable relative to the slide groove in the second direction D2. For example, as shown in fig. 25, the intermediate power transmission device 370 is provided with a slide rail 378, the slide rail 378 extending in the second direction D2. The liner cover 12 is provided with a slide groove (not shown) matching the slide rail 378 for accommodating the slide rail 378. Thus, the intermediate power transmission device 370 can stably move up and down in the second direction D2 with respect to the liner cover 12 under the guiding action of the slide rails 378 and the slide grooves.

It will be appreciated that in the fourth embodiment, the first air vent 51 of the reversing valve 50 is communicated with the air pump air inlet 93, and the second air vent 52 of the reversing valve 50 is communicated with the air pump air outlet 94, and at this time, the first air pressure state and the second air pressure state of the cooking space 32 can also be achieved by using the obliquely downward side surface 375 of the inclined surface 372 as the first transmission surface.

It will be appreciated that in the fourth embodiment, the third air port 53 of the reversing valve 50 may be communicated with the steam valve 90, the fourth air port 54 of the reversing valve 50 may be communicated with the air inlet and outlet port 18, and the first air pressure state and the second air pressure state of the cooking space 32 may be achieved as well, using the obliquely downward side surface 375 of the inclined surface 372 as the first transmission surface.

It will be appreciated that in the fourth embodiment, the first air vent 51 of the reversing valve 50 may be communicated with the air pump air inlet 93, the second air vent 52 of the reversing valve 50 may be communicated with the air pump air outlet 94, the third air vent 53 of the reversing valve 50 may be communicated with the steam valve 90, and the fourth air vent 54 of the reversing valve 50 may be communicated with the air inlet 18, so that the first air pressure state and the second air pressure state of the cooking space 32 may be realized.

It will be appreciated that in the fourth embodiment, the intermediate power transmission device 370 may be moved downward when the electromagnet 377 is energized; when the electromagnet 377 is de-energized, the intermediate power transmission device 370 is raised by a return element (e.g., a spring extending in the second direction D2). At the same time, it will be appreciated that the direction of inclination of the first drive surface needs to be matched to the manner in which the four vents of the reversing valve 50 are connected.

The non-introduced portion of the fourth embodiment refers to the description of the first embodiment.

The processes, steps described in all the preferred embodiments described above are examples only. Unless adverse effects occur, various processing operations may be performed in an order different from that of the above-described flow. The step sequence of the above-mentioned flow can also be added, combined or deleted according to the actual requirement.

In understanding the scope of the present application, the term "comprising" and its derivatives, as used herein, are intended to be open ended terms that specify the presence of the stated features, elements, components, groups, integers, and/or steps, but do not exclude the presence of other unstated features, elements, components, groups, integers and/or steps. This concept also applies to words having similar meanings such as the terms "including", "having" and their derivatives.

The terms "attached" or "attached" as used herein include: a construction in which an element is directly secured to another element by directly securing the element to the other element; a configuration for indirectly securing an element to another element by securing the element to an intermediate member, which in turn is secured to the other element; and the construction in which one element is integral with another element, i.e., one element is substantially part of the other element. The definition also applies to words having similar meanings such as the terms, "connected," "coupled," "mounted," "adhered," "secured" and their derivatives. Finally, terms of degree such as "substantially", "about" and "approximately" as used herein mean a deviation amount modified such that the end result is not significantly changed.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the application. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present application has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the application to the embodiments described. In addition, it will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present application, which fall within the scope of the claimed application.

Claims

1. A cooking appliance, comprising:

2. The cooking appliance of claim 1, wherein the reversing assembly includes a power supply means for supplying power to actuate the communication port opening and closing assembly and the air flow reversing device, and an intermediate power transmission means connected thereto for transmitting the power to the communication port opening and closing assembly and the air flow reversing device.

3. The cooking appliance of claim 2, wherein the cooking appliance further comprises a handle,

The intermediate power transmission device includes a transmission body configured to be rotatable about a rotation axis extending in a second direction under the drive of the power supply device, the transmission body including:

4. A cooking appliance according to claim 3, wherein in a projection of the transmission body in the second direction, the second transmission surface is located in a first region of the transmission body in the circumferential direction, the first transmission surface is located in a second region of the transmission body in the circumferential direction, the first region and the second region at least partially overlapping or not overlapping each other.

5. The cooking appliance of claim 4, wherein the second drive surface further comprises a second drive surface intermediate portion between the second drive surface first end and the second drive surface second end, a position of the second drive surface intermediate portion in the second direction being different from a circumferential position of the second drive surface intermediate portion.

6. A cooking appliance according to claim 3, wherein the transmission body comprises:

7. The cooking appliance of claim 6, wherein the second drive surface is disposed at an axial end surface of the ramp portion.

8. A cooking appliance according to claim 3, wherein the intermediate power transmission device further comprises:

9. Cooking appliance according to any one of claims 2 to 8, wherein the power supply is configured as a motor.

10. The cooking appliance of claim 2, wherein the cooking appliance further comprises a handle,

The intermediate power transmission device is configured to be movable in a first direction relative to the cover body under the drive of the power supply device, wherein the intermediate power transmission device is provided with a connecting portion for connecting to and acting on the air flow reversing device and a second transmission surface for connecting to and acting on the communication port opening and closing assembly,

11. The cooking appliance of claim 10, wherein the intermediate power transmission device comprises:

12. The cooking appliance of claim 11, wherein the cooking appliance further comprises a handle,

The intermediate power transmission device further includes a biasing element for applying a biasing force in the first direction to the slider,

13. The cooking appliance of claim 12, wherein the biasing element is an elastic return element disposed between the slider and the slider seat, the elastic return element configured to be elastically deformable in the first direction.

14. Cooking appliance according to any one of claims 10 to 13, wherein the power supply is configured as a push-pull electromagnet, which is movable in the first direction relative to the cover.

15. The cooking appliance according to claim 2, wherein the intermediate power transmission device is configured to be movable in a second direction relative to the cover body by being driven by the power supply device, wherein the intermediate power transmission device is provided with a connecting portion for connecting to and acting on the communication port opening and closing assembly and a first transmission surface for connecting to and acting on the air flow reversing device,

16. The cooking appliance of claim 15, wherein the cooking appliance further comprises a handle,

The power supply means comprises an electromagnet,

The reversing assembly includes a first reversing portion and a second reversing portion aligned in a second direction, the second reversing portion configured to be movable relative to the first reversing portion in the second direction,

Wherein the first reversing portion is fixed to the cover body, and the intermediate power transmission device is provided in the second reversing portion.

17. The cooking appliance of claim 2 wherein the intermediate power transmission device comprises a linkage comprising a linkage having oppositely disposed first and second ends,

18. The cooking appliance of claim 17, wherein the linkage is configured to be rotatable about a linkage rotation axis, wherein the linkage rotation axis is perpendicular to the second direction.

19. The cooking appliance of claim 17, wherein the cooking appliance further comprises a handle,

The reversing assembly drives the airflow reversing device to move in a first geometric dimension;

20. The cooking appliance of claim 19, wherein the first geometric dimension forms an included angle of 0 to 120 degrees with a projection line of the third geometric dimension on a horizontal plane when the lid is in a state of covering the pot.

21. The cooking appliance of claim 1, wherein the cooking appliance further comprises a handle,

22. The cooking appliance of claim 21, wherein the first geometric dimension is a straight line in a horizontal plane and the second geometric dimension is a straight line perpendicular to the horizontal plane in a state in which the lid covers the pot.

23. The cooking appliance of claim 1, wherein the cooking appliance further comprises a handle,

The air flow reversing device comprises a valve inner cavity and a valve core, wherein the valve core is arranged in the valve inner cavity and can move in the valve inner cavity to switch an air flow channel in the valve inner cavity;

The cooking appliance is configured to:

24. The cooking appliance according to any one of claims 1 to 8, or 10 to 13, or 15 to 22, further comprising a ventilation chamber provided to the cover, the cooking space being in communication with the ventilation chamber via the communication port, the ventilation chamber further being provided with a ventilation chamber external ventilation hole communicating with the outside.

25. The cooking appliance of claim 24, further comprising a steam valve disposed on the cover, wherein the steam valve is provided with a steam valve vent communicated with the outside, and wherein the vent hole outside the vent chamber is communicated with the steam valve.

26. The cooking appliance of claim 24, further comprising:

Wherein, the ventilation cavity outer vent communicates to the steam channel.

27. The cooking appliance according to any one of claim 1 to 8, or 10 to 13, or 15 to 22,

The cover body is provided with a push rod through hole;

28. The cooking appliance of claim 27, wherein the cooking appliance further comprises a cooking chamber,

The second end of the push rod assembly is provided with a flange protruding outwards in a radial direction, the radial dimension of the flange is larger than the radial dimension of the push rod through hole,

29. The cooking appliance of claim 27, wherein an end of the push rod through hole facing the communication port is provided with a sealing member, the sealing member being in sealing contact with the push rod assembly.

30. The cooking appliance of claim 27 wherein the reversing assembly is connected to and acts upon the push rod assembly second end.