CN109452840B

CN109452840B - Cooking utensil

Info

Publication number: CN109452840B
Application number: CN201810672042.8A
Authority: CN
Inventors: 钟辰根
Original assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Current assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2024-04-02
Anticipated expiration: 2038-06-26
Also published as: CN109452840A

Abstract

The invention provides a cooking utensil which comprises a cooker body, a cover body, a pressure reducing device and a pressure releasing component. An inner pot is arranged in the pot body. The cover body can be opened and closed, and a cooking space is formed between the cover body and the inner pot, and the cover body is provided with a pressure relief hole. The pressure reducing device is used for making the pressure of the cooking space lower than a preset pressure. The pressure relief assembly includes a pressure relief lever, a power device, and a seal. The pressure relief lever is movable between a sealing position and an open position. The power device drives the pressure release lever and secures it in the sealed position. The sealing element is connected with the cover body and the pressure release rod. When the pressure release rod is located at the sealing position, the sealing piece elastically deforms and seals the pressure release hole, and the pressure release rod is applied with elastic force to move to the opening position when the power device stops working, and the sealing of the pressure release hole is released. According to the cooking utensil disclosed by the invention, the seal is released by utilizing the elasticity of the sealing element, so that the pressure release assembly is simple in structure, safe and reliable in operation process, and not easy to cause faults, and a user can smoothly use the cooking utensil.

Description

Cooking utensil

Technical Field

The present invention relates generally to cooking appliances.

Background

Some cooking appliances (such as electric rice cooker) have the function of micro-pressure or negative pressure, so that food can be cooked in the micro-pressure or negative pressure environment, and a good cooking effect is achieved. Cooking appliances are generally sealed and pressure-relieved by the following two ways:

1. one is to seal the position of the air outlet blocked by the steel ball, and to release pressure when the steel ball leaves the air outlet, and to push the steel ball to block or leave the air outlet by the electromagnet;

2. when the electromagnet works, the air outlet is blocked by the silica gel piece under the drive of a certain mechanism, and a closed space is formed in the cooking utensil to realize sealing.

However, most of the above sealing devices are relatively complex in structure and high in cost. Meanwhile, the complex mechanism has higher failure rate, parts are worn and equipment is aged due to frequent use, and the problems of poor sealing or incapability of releasing sealing and the like are easily caused, so that the use of users is influenced.

Accordingly, there is a need for a cooking appliance that at least partially solves the problems of the prior art.

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 invention 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 invention provides a cooking appliance including:

a pot body, wherein an inner pot is arranged in the pot body;

the cover body is arranged on the cooker body in an openable and closable manner, a cooking space is formed between the cover body and the inner pot when the cover body covers the cooker body, and a pressure release hole communicated with the cooking space is formed in the cover body;

a pressure reducing device for making the pressure in the cooking space lower than a predetermined pressure; and

a pressure relief assembly, the pressure relief assembly comprising,

a pressure relief lever vertically movable between a sealed position and an open position;

the power device drives the pressure release rod and fixes the pressure release rod at the sealing position; and

the sealing piece is connected with the cover body and the pressure relief rod, when the pressure relief rod is positioned at the sealing position, the sealing piece elastically deforms and seals the pressure relief hole, and the sealing piece applies elastic force to the pressure relief rod so as to enable the pressure relief rod to stop working when the power device stops working

The pressure release rod moves to the opening position and releases the seal of the pressure release hole.

According to the cooking utensil disclosed by the invention, the seal is released by utilizing the elasticity of the sealing element, so that the pressure release assembly is simple in structure, safe and reliable in operation process, and not easy to cause faults, and a user can smoothly use the cooking utensil.

Optionally, the seal comprises: a fixing portion having a ring shape, the fixing portion being connected to the cover; the sealing part is round and is used for sealing the pressure relief hole, and the sealing part is connected to the pressure relief rod and integrally moves along with the pressure relief rod; and the deformation part is connected with the fixing part and the sealing part, and is kept in the original state when the pressure release rod is positioned at the opening position, and is elastically deformed and exerts restoring force when the pressure release rod is positioned at the sealing position. Therefore, the purpose of sealing and releasing the seal can be realized only through the elastic deformation of the deformation part, the action range of the sealing element is reduced, the operation is reliable, and the service life can be prolonged.

Optionally, the pressure release rod is provided with a rod seat, and the rod seat is fixedly connected with the pressure release rod; the pressure release assembly further comprises a pressure release cover and a pressure release spring, the pressure release cover is sleeved on the pressure release rod and can move relative to the rod seat, and the pressure release spring is positioned between the pressure release cover and the rod seat; the power device acts on the pressure release cover to drive and fix the pressure release rod. Therefore, the pressure release spring can ensure that the sealing element is tightly attached to the pressure release hole, and the situation that the sealing element is excessively deformed due to overlarge advancing distance of the pressure release rod can be avoided, so that a buffer effect is achieved.

Optionally, the pressure release cover is connected with the rod seat and the pressure release cover and the rod seat can move relatively along the axial direction of the pressure release rod. Therefore, the pressure relief assembly can be compact in structure.

Optionally, the movable distance between the pressure release cover and the rod seat ranges from 3mm to 6mm. Therefore, the pressure release spring can play a role in buffering in a preset range, so that the cooking utensil is compact in structure.

Optionally, the rod seat is connected to an end of the pressure release rod, the rod seat is provided with a rib extending perpendicular to the axial direction of the pressure release rod, and the sealing element is in clamping connection with the rib. Therefore, the sealing piece can be firmly connected with the pressure release rod, and the cooking utensil is compact in structure.

Optionally, the power device includes:

the transmission piece can transversely move between a reset position and a position in place, when the transmission piece is positioned at the reset position, the transmission piece is not contacted with the pressure release cover, and when the transmission piece is positioned at the position in place, the transmission piece presses the pressure release cover to fix the pressure release rod at the sealing position;

the iron core of the electromagnet is connected with the transmission piece, and the iron core drives the transmission piece to move between the reset position and the in-place position; and

and the electromagnetic spring biases the transmission piece towards a direction away from the electromagnet. Therefore, the action of the pressure release rod is controlled by the electromagnet, and the operation is reliable.

Optionally, the transmission member includes a relief portion and a pressing portion, wherein, along an axial direction of the pressure release lever, the relief portion is further away from the pressure release cover than the pressing portion; when the transmission piece is located at the reset position, the avoidance portion is aligned with the pressure release cover along the axial direction, and when the transmission piece is located at the in-place position, the pressing portion is aligned with the pressure release cover along the axial direction. Therefore, the transmission piece can convert the transverse movement into the vertical movement of the pressure release rod, the structure is simple, the operation is reliable, and the production is easy.

Optionally, the avoidance portion and the pressing portion are in inclined transition along the moving direction of the transmission member. Therefore, the transmission of the motion of the transmission part and the pressure release cover in the moving process is facilitated.

Optionally, the transmission piece is provided with a through groove, the transmission piece is sleeved on the pressure release rod through the groove, and the pressure release cover is positioned below the transmission piece. Therefore, the reliable relative position of the transmission piece and the pressure release rod can be kept, and the reliability of transmission is ensured.

Optionally, the length of the slot is greater than or equal to the maximum travel distance of the driving member. Therefore, the pressure release rod can be prevented from interfering with the movement of the transmission piece.

Optionally, the lid includes inside lining and removable lid, the pressure release hole set up in removable lid, the pressure release subassembly sets up on the inside lining. From this, divide into inside lining and removable lid with the lid, removable lid can conveniently unpick and wash, and the inside lining can play the effect that supports the enhancement to the convenience sets up pressure release subassembly, thereby the manufacturing of being convenient for.

Drawings

The following drawings of embodiments of the present invention are included as part of the invention. Embodiments of the present invention and their description are shown in the drawings to explain the principles of the invention. In the drawings of which there are shown,

FIG. 1 is a partial schematic view of a cooking appliance according to a preferred embodiment of the present invention, in vertical section;

FIG. 2 is an exploded schematic view of a pressure relief assembly of the cooking appliance shown in FIG. 1;

FIG. 3 is a schematic vertical sectional view of the sealing member of the cooking appliance shown in FIG. 1 in a normal state;

FIG. 4 is a schematic vertical cut-away view of the sealing member of the cooking appliance shown in FIG. 1 in a deformed state;

FIG. 5 is a schematic view of a power device of a pressure relief assembly of the cooking appliance shown in FIG. 1;

FIG. 6 is a partial schematic view of the pressure relief assembly of the cooking appliance of FIG. 1 in a sealed condition; and

fig. 7 is a partial schematic view of the pressure relief assembly of the cooking appliance shown in fig. 1 in an open state.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that embodiments of the invention 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 embodiments of the invention.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present invention. It will be apparent that embodiments of the invention may be practiced without limitation to the specific details that are set forth by those skilled in the art.

The invention discloses a cooking utensil. Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1, the cooking appliance includes a pot body 10 and a cover body 20. Although the drawings show only a part of the cooking appliance, it is understood that the pot body 10 may be generally constructed in the shape of a rounded rectangular parallelepiped, with the inner pot 11 disposed therein. The inner pot 11 is configured to be removably disposed in the pot body 10. For example, in one embodiment, a cylindrical inner pot accommodating portion may be provided in the pot body 10, and the inner pot 11 may be freely placed in or taken out from the inner pot accommodating portion. The removable arrangement allows the user to conveniently remove and clean the inner pan 11. Of course, in other embodiments, the inner pot 11 may be fixedly disposed in the pot body 10 in a non-removable manner. Heating means (not shown) for heating the inner pot 11 are also typically provided in the pot body 10.

The cover 20 is openably and closably provided on the pot body 10, and has a shape corresponding to the shape of the pot body 10, so that the pot body 10 can be conveniently covered. When the cover 20 is opened, the opening of the inner pot 11 is exposed, and a user can add food material to the inner pot 11 or take out cooked food from the inner pot 11. When the cover 20 is covered on the cooker body 10, it covers the inner pot 11 and forms a cooking space 12 with the inner pot 11. A sealing member (not shown) is provided between the cover 20 and the inner pot 11, so that the cooking space 12 can maintain good sealability.

As shown in fig. 1, in the present embodiment, the lid body 20 includes three parts of a face cover (omitted from the drawing), an inner liner 21, and a detachable cover 22. The liner 21 has high strength and can play a supporting role. A removable cover 22 is provided on the side of the liner 21 facing the inner pot 11, which can be removed from the liner 21 for easy cleaning. The cover covers the outside of the inner liner 21, protects the inner liner 21 and parts provided thereon, and makes the cover 20 as a whole beautiful. Of course, in the embodiment not shown in the drawings, other embodiments of the cover 20 are also possible, for example, the cover 20 may be provided as a unitary integral structure.

In addition, the cooking appliance shown in the present invention is further provided with a pressure reducing device (not shown). The pressure reducing means serves to lower the pressure in the cooking space 12 below a predetermined pressure. For example, cooking space 12 may be evacuated to a pressure below atmospheric pressure. The state in which the pressure inside the cooking space 12 is lower than the atmospheric pressure may be referred to as a negative pressure state. Therefore, the cooking appliance can be an electric cooker, an electric pressure cooker and the like with a negative pressure function. The negative pressure environment helps to optimize the cooking process and preserve food. For example, when cooking rice, the cooking space 12 is kept in a negative pressure environment during the water absorption process of rice grains, so that rice and water can be mixed faster and better; in addition, the food which is not needed to be taken after cooking is stored in the cooking space 12 in the negative pressure environment, so that the deterioration speed of the food can be slowed down, and the food can keep good taste for a long time.

In one embodiment, the pressure relief device may include an air pump. The air inlet of the air pump is communicated with the cooking space 12 through an exhaust pipe made of silica gel, and the air outlet of the air pump can be communicated with the external environment of the cooking space 12, for example, directly communicated with the external atmosphere. When it is necessary to create a negative pressure environment in the cooking space 12, the air pump is manually activated by a control device or by a person to pump air, and the air in the cooking space 12 is discharged through the air pump and the air pump, wherein the pressure is reduced. A pressure measuring device may be provided to monitor the pressure in the cooking space 12, and when the pressure therein drops to a predetermined value, the air pump stops working, and a negative pressure environment is formed in the cooking space 12. Preferably, the pressure reducing device may further include a solenoid valve provided on an air flow path between the air pump and the cooking space 12 to control opening and closing of the air flow path. The solenoid valve turns on the air flow path when the air suction is completed, and cuts off the air flow path after the air suction is completed, so that the interior of the cooking space 12 is maintained in a negative pressure state.

When cooking space 12 is in a negative pressure state, atmospheric pressure acts on cover 20, and difficulties are encountered if it is desired to open the cover to perform an operation such as taking food stored in cooking space 12. Thus, a pressure relief assembly 30 is provided. Before the cover is opened, the pressure is released through the pressure release assembly 30, so that the inside of the cooking space 12 is restored to the normal pressure state, and the cover is conveniently opened. As shown in fig. 2, pressure relief assembly 30 may include a pressure relief lever 31, a seal 32, and a power device 37. Accordingly, the cover 20 is provided with a pressure release hole 23 communicating with the cooking space 12. Wherein the pressure relief assembly 30 is disposed on the stronger liner 21. The detachable cover 22 is in direct contact with the cooking space 12, and thus the pressure release hole 23 is provided on the detachable cover 22.

The pressure release lever 31 has two positional states of an open position and a sealed position, and is movable between the two positions. The seal 32 is connected to the cover 20 and the pressure release lever 31, respectively. When the pressure release lever 31 is in the open position, the relative positions of the pressure release lever 31 and the cover 20 keep the seal 32 intact and do not contact the pressure release hole 23. The cooking space 12 can now communicate with the outside through the pressure relief hole 23. When the pressure release lever 31 is in the sealing position, the sealing member 32 is elastically deformed along with the movement of the pressure release lever 31, and simultaneously seals the pressure release hole 23. At this time, the seal 32 tends to rebound to return to its original state by generating a restoring force due to elastic deformation. That is, the seal 32, which is elastically deformed, acts on the relief rod 31 to have a tendency to move from the sealing position toward the open position.

When it is desired to seal cooking space 12, power device 37 acts on pressure release lever 31 to drive pressure release lever 31 from the open position to the sealed position and to fix pressure release lever 31 in the sealed position against the elastic force of seal 32 to avoid pressure release lever 31 from rebounding to the open position due to the action of elastically deformed seal 32.

When pressure relief is required, the power device 37 stops working, and no acting force is generated on the pressure relief rod 31. The relief rod 31 is now acted upon by the restoring force of the seal 32 only. Under the action of the restoring force, the sealing element 32 is restored to the original state, and is far away from the pressure release hole 23 to release the sealing for pressure release. While the pressure release lever 31 is moved to the open position by the restoring force of the seal 32, waiting for the next sealing operation to be performed.

Fig. 3 shows a preferred embodiment of the seal 32, which comprises a fixing portion 321, a sealing portion 322 and a deformation portion 323. Referring again to fig. 1, 6 and 7. The fixing portion 321 is connected to the cover 20. Specifically, the fixing portion 321 is configured in a ring shape, and has a clamping groove at an outer edge thereof. The fixing portion 321 is connected to an attachment position provided on the liner 21 of the lid 20 by a snap-fit manner through a snap groove. The sealing portion 322 is generally circular in configuration, is connected to the relief rod 31, and moves integrally with the relief rod 31 to seal the relief hole 23 or unseal. The deformation portion 323 connects the fixing portion 321 and the sealing portion 322. As shown in fig. 4, when the sealing portion 322 moves relative to the fixing portion 321, the deformation portion 323 is elastically deformed.

Preferably, the lower end of the pressure release lever 31 is provided with a lever seat 33. As shown in fig. 6 and 7, the outside of the rod seat 33 is provided with a rib extending perpendicular to the axial direction of the pressure release rod 31, and the sealing portion 322 is connected to the pressure release rod 31 by being engaged with the rib. Thereby, the sealing member 32 is connected to the end of the pressure release lever 31, and the structure of the cooking appliance can be made more compact. The rod seat 33 may be integrally formed with the main body of the pressure release rod 31, or may be separately manufactured and then connected to the main body of the pressure release rod 31 by means such as a snap-fit connection, a threaded connection, or the like.

Meanwhile, the pressure relief assembly 30 further includes a pressure relief cap 34 and a pressure relief spring 35. As shown in fig. 6 and 7, the pressure release cover 34 is sleeved on the pressure release lever 31. The pressure release spring 35 is located between the pressure release cover 34 and the rod seat 33, and both ends thereof respectively abut against the pressure release cover 34 and the rod seat 33. In order to keep the pressure release spring 35 stable, it is also sleeved on the pressure release rod 31. The power device 37 is configured to act on the pressure relief cover 34 to effect movement of and secure the pressure relief lever 31.

The purpose of the pressure release cover 34 and the pressure release spring 35 is that if the power device 37 directly acts on the pressure release lever 31, since the pressure release lever 31 and the power device 37 are of a rigid structure, and there is a manufacturing error in actual production, the travel distance of the pressure release lever 31 from the open position to the sealed position is easily made to be too large, so that the pressure release lever 31 is moved to the sealed position where the sealing portion 322 completely seals the pressure release hole 23, and then the movement is continued. This causes excessive deformation of the deformed portion 323 of the seal 32, resulting in shortened service life and even damage, and excessive fitting of the seal portion 322 with the pressure release hole 23 and even protruding from the pressure release hole 23, which easily results in a problem of poor sealing.

And the power device 37 indirectly drives the pressure release lever 31 through the pressure release cover 34 and the pressure release spring 35, when the pressure release lever 31 moves to the sealing position for completely sealing the pressure release hole 23 by the sealing part 322, if the power device 37 continues to act on the pressure release cover 34, part of the acting force is absorbed due to the buffering action of the pressure release spring 35, so that the pressure release lever 31 and the sealing part 322 can be ensured to be fixed at the position without excessive movement. Thereby ensuring the accuracy of sealing the relief aperture 23 with the relief assembly 30.

Preferably, the pressure relief cover 34 may be movably connected with the stem mount 33. This can limit the relative movement of the two in other directions so that the two can only move in the axial direction of the pressure release lever 31. It is further preferable that the distance of the relative movement between the pressure release cover 34 and the lever seat 33 is in the range of 3mm to 6mm. For example, in the present embodiment, the range may be 4mm to 5mm. In this way, the pressure relief assembly 30 as a whole can be kept compact.

As shown in fig. 6 and 7, a relief seat 36 is provided to stabilize the movement of the relief cover 34 and the relief lever 31. The pressure release cover 34 and the pressure release lever 31 are fixed together on the liner 21 by the pressure release seat 36 and are fastened by fasteners such as screws, so that the pressure release cover 34 and the pressure release lever 31 can only move up and down in the axial direction of the pressure release lever 31, while remaining fixed in other directions.

Fig. 5 shows a preferred embodiment of the power plant 37, which comprises a transmission 371, an electromagnet 372 and an electromagnetic spring 373. The transmission 371 is connected to the core 377 of the electromagnet 372. An electromagnetic spring 373 is disposed between the transmission 371 and the electromagnet 372. When the electromagnet 372 is operated, the iron core 377 is sucked, the transmission member 371 is driven to move toward the direction approaching the electromagnet 372, and the electromagnetic spring 373 is compressed. When the electromagnet 372 is de-energized, the iron core 377 is not attracted, and the elastic force of the electromagnetic spring 373 moves the transmission member 371 in a direction away from the electromagnet 372. Of course, it is also possible to provide the electromagnetic spring 373 on the side of the transmission member 371 remote from the electromagnet 372, and to cause the electromagnetic spring 373 to be stretched when the transmission member 371 is moved toward the electromagnet 372.

The transmission member 371 is used for transmitting the movement of the core 377 of the electromagnet 372 to the pressure release rod 31 and converting the movement into the movement of the pressure release rod 31. Specifically, the transmission member 371 is generally configured in an elongated shape, which includes a pressing portion 374 and a relief portion 375. The relief 375 is connected to the core 377. As shown in fig. 6 and 7, the transmission member 371 is located above the pressure release cover 34, and along the axial direction of the pressure release lever 31, the escape portion 375 is farther from the pressure release cover 34 than the pressing portion 374.

When the electromagnet 372 is powered off, the iron core 377 is in a free state, the transmission member 371 is far away from the electromagnet 372 under the action of the electromagnetic spring 373, and the avoiding portion 375 is aligned with the pressure release cover 34 along the axial direction of the pressure release rod 31. At this time, the transmission member 371 is located at the reset position and is not in contact with the pressure release cover 34, so that the pressure release lever 31 is located at the open position without being acted on by the power device 37. And when electromagnet 372 is energized, iron core 377 is attracted to drive member 371 against electromagnet 372 and pressing portion 374 is aligned with pressure relief cap 34 along the axial direction of pressure relief rod 31. At this time, the transmission member 371 is located at the in-place position, and the pressing portion 374 presses the pressure release cover 34 to move the pressure release lever 31 toward the sealing position, and fixes the pressure release lever 31 at the sealing position.

It will be appreciated that the transmission 371 may also be connected to the core 377 of the electromagnet 372 by a pressing portion 374. Thus, the position of drive member 371 when it is near electromagnet 372 should be the reset position and the position when drive member 371 is far from electromagnet 372 should be the home position.

Preferably, the transition between the relief portion 375 and the pressing portion 374 of the transmission member 371 is angled to facilitate the transfer of motion from the transmission member 371 to the pressure relief housing 34 during movement. Preferably, the transmission member 371 is provided with a through slot 376, and is sleeved on the pressure release rod 31 through the slot 376. In this way, the relative positions of the transmission piece 371 and the pressure release cover 34 can be ensured, so that the transmission is more reliable. Note that the length of the slot 376 should be greater than the distance that the transmission 371 moves between the reset and home positions, so as to avoid excessive contact between the transmission 371 and the pressure relief lever 31 as much as possible so as not to interfere with movement of the pressure relief lever 31.

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 invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. 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 invention 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 invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.

Claims

1. A cooking appliance, the cooking appliance comprising:

a pot body, wherein an inner pot is arranged in the pot body;

a pressure relief assembly, the pressure relief assembly comprising,

the sealing piece is connected with the cover body and the pressure relief rod, when the pressure relief rod is positioned at the sealing position, the sealing piece elastically deforms and seals the pressure relief hole, and the sealing piece applies elastic force to the pressure relief rod so as to move the pressure relief rod to the opening position and release the sealing of the pressure relief hole when the power device stops working;

the pressure release rod is provided with a rod seat which is fixedly connected with the pressure release rod;

the pressure relief assembly further comprises a pressure relief cover and a pressure relief spring, the pressure relief cover is sleeved on the pressure relief rod and can move relative to the rod seat, the pressure relief spring is located between the pressure relief cover and the rod seat, and the power device acts on the pressure relief cover to drive and fix the pressure relief rod.

2. The cooking appliance of claim 1, wherein the seal comprises:

a fixing portion having a ring shape, the fixing portion being connected to the cover;

the sealing part is round and is used for sealing the pressure relief hole, and the sealing part is connected to the pressure relief rod and integrally moves along with the pressure relief rod; and

and the deformation part is connected with the fixing part and the sealing part, and is kept in the original state when the pressure release rod is positioned at the opening position, and elastically deforms and exerts restoring force when the pressure release rod is positioned at the sealing position.

3. The cooking appliance of claim 1, wherein the pressure relief cap is connected to the stem base and is relatively movable in an axial direction of the pressure relief stem.

4. A cooking appliance according to claim 3, wherein the movable distance between the pressure relief cap and the stem base is in the range 3mm to 6mm.

5. The cooking appliance according to claim 1, wherein the rod seat is connected to an end of the pressure release rod, the rod seat being provided with ribs extending perpendicular to an axial direction of the pressure release rod, the seal being snap-connected with the ribs.

6. The cooking appliance of claim 1, wherein the power means comprises:

and the electromagnetic spring biases the transmission piece towards a direction away from the electromagnet.

7. The cooking appliance of claim 6, wherein the transmission member includes a relief portion and a pressing portion, wherein the relief portion is farther from the pressure release cover than the pressing portion along an axial direction of the pressure release lever;

when the transmission piece is located at the reset position, the avoidance portion is aligned with the pressure release cover along the axial direction, and when the transmission piece is located at the in-place position, the pressing portion is aligned with the pressure release cover along the axial direction.

8. The cooking appliance according to claim 7, wherein the escape portion and the pressing portion are obliquely transited in a moving direction of the transmission member.

9. The cooking appliance according to claim 6, wherein the transmission member is provided with a through long groove, the transmission member is sleeved on the pressure release lever through the long groove, and the pressure release cover is positioned below the transmission member.

10. The cooking appliance of claim 9, wherein a length of the elongated slot is greater than or equal to a maximum travel distance of the transmission member.

11. The cooking appliance of claim 1, wherein the lid comprises a liner and a removable cover, the pressure relief vent is disposed on the removable cover, and the pressure relief assembly is disposed on the liner.