CN108338672B

CN108338672B - Cooking utensil

Info

Publication number: CN108338672B
Application number: CN201710059491.0A
Authority: CN
Inventors: 刘一琼; 邱清山
Original assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Current assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Priority date: 2017-01-24
Filing date: 2017-01-24
Publication date: 2021-01-15
Anticipated expiration: 2037-01-24
Also published as: CN108338672A

Abstract

The invention discloses a cooking utensil which comprises a cover body and a cooker body, wherein the cover body is provided with an opening, a floater assembly and a cover opening sliding block, and the floater assembly comprises a floater seat, a floater and an opening sealing part. An opening seal portion that is changeable between an initial state and an actuated state by a float, and that is capable of isolating the cooking space from the outside atmosphere in both the initial state and the actuated state, the opening seal portion being in the initial state and the float being in a fall-back position in a state where a pressure in the cooking space is less than or equal to a predetermined threshold value; when the pressure in the cooking space is greater than the preset threshold value, the opening sealing part is in an actuating state, the floater is located at a blocking position to prevent the cover opening sliding block from moving to the opening position, so that a user cannot open the cover body, and personal injury brought to the user by opening the cover body when the pressure in the inner pot is high can be avoided.

Description

Cooking utensil

Technical Field

The invention relates to the field of small household appliances, in particular to a cooking appliance.

Background

A closed space is formed between an inner pot and a cover body of a pressure cooking appliance such as a pressure rice cooker. During the cooking process, liquid in the inner pot is heated to generate steam, and the steam generates pressure in the closed space along with the collection of the steam. If the cover body is opened at the moment, high-temperature steam and liquid can be sprayed out of the inner pot, and personal injury is brought to a user.

Therefore, there is a need for a cooking appliance that at least partially solves the above problems.

Disclosure of Invention

In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or 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.

In order to solve at least part of the above problems, the present invention discloses a cooking appliance, characterized by comprising:

the cooker body is internally provided with an inner pot; and

a lid openably provided on the pot body and constituting a cooking space between the inner pot and the lid, the lid being provided with an opening communicating with the cooking space, a float assembly provided corresponding to the opening, and an opening-lid slider movable between a locked position preventing the lid from being separated from the pot body and an open position allowing the lid to be separated from the pot body;

the float assembly includes:

a float seat having an internal through hole;

a float positioned in the interior throughbore and movable relative to the float seat between a unseated position and a blocking position; and

an opening seal portion that is changeable between an initial state and an actuated state by the float, and that is capable of isolating the cooking space from an external atmosphere in both the initial state and the actuated state,

wherein, in a state where the pressure within the cooking space is less than or equal to a predetermined threshold value, the opening seal portion is in the initial state, and the float is located at the fall-back position;

in a state where the pressure in the cooking space is greater than the predetermined threshold value, the opening seal portion is in the actuated state, and the float is located at the blocking position to prevent the lid opening slider from moving toward the open position.

The cooking appliance according to the present invention has an opening in a lid body, a float assembly provided corresponding to the opening, and a lid-opening slider, the float assembly including a float seat, a float, and an opening seal portion. An opening seal portion that is changeable between an initial state and an actuated state by a float, and that is capable of isolating the cooking space from the outside atmosphere in both the initial state and the actuated state, the opening seal portion being in the initial state and the float being in a fall-back position in a state where a pressure in the cooking space is less than or equal to a predetermined threshold value; when the pressure in the cooking space is larger than the preset threshold value, the opening sealing part is in an actuating state, the floater is located at a blocking position to prevent the cover opening sliding block from moving to the opening position, so that a user cannot open the cover body, and personal injury brought to the user by opening the cover body when the pressure in the inner pot is high can be avoided.

Optionally, the opening sealing portion comprises a first sealing portion and a second sealing portion,

the first sealing part isolates the cooking space from the external atmosphere when the opening sealing part is in the actuated state,

the second sealing part isolates the cooking space from the external atmosphere when the opening sealing part is in the initial state. Thereby, the first sealing portion isolates the cooking space from the external atmosphere when the opening sealing portion is in the activated state, and the second sealing portion isolates the cooking space from the external atmosphere when the opening sealing portion is in the initial state.

Optionally, the second sealing portion is provided at a bottom end of the float, and abuts against an outer periphery of the opening to seal the opening when the opening sealing portion is in the initial state. Thereby, the second sealing portion can abut against the opening, thereby better sealing.

Optionally, the second sealing portion includes an extension portion extending obliquely outward toward the opening. Thus, in a state where the pressure in the cooking space is less than or equal to the predetermined threshold value, the second sealing portion is moved toward the opening by the small pressure in the cooking space, and the obliquely outwardly extending extension portion is attached to the upper surface of the opening.

Optionally, the first sealing portion includes a bent portion having a middle portion protruding outward. Thus, in a state where the pressure in the cooking space is greater than the predetermined threshold, the opening sealing portion is in an actuated state by the greater pressure in the cooking space, and the bent portion, the middle portion of which protrudes outward, respectively abuts the lid body upward and downward by the pressure, so that the first sealing portion can be more firmly sealed in abutment.

Optionally, the first sealing portion and the second sealing portion are both disposed on the float, the first sealing portion is located below the second sealing portion, and the second sealing portion is located in the internal through hole.

Optionally, the first and second seals are sealing rings disposed around the float.

Optionally, the float has a recess provided in a radial direction of the float, and the first seal portion and the second seal portion are accommodated in the recess. Thereby, the first seal portion and the second seal portion can be more firmly provided on the float.

Optionally, the float has a radial projection above the second seal to prevent the second seal from exiting the recess. Thereby, the second seal portion can be more firmly provided on the float.

Optionally, the cover includes a removable cover member, the opening and the opening seal are disposed on the removable cover member, the opening seal is disposed around the opening, and a top of the opening seal abuts a bottom end of the float. Thereby, the opening sealing part communicates with the cooking space via the opening and forms a closed area.

Optionally, the opening sealing part is a reed. Thereby, the reed can be switched quickly between the initial state and the actuated state.

Optionally, the float has a radial projection contactable with the float seat to define the blocking position. The radial projection thereby limits the distance the float moves upwardly relative to the float seat.

Optionally, the cooking utensil still includes the vacuum pump, the air inlet of vacuum pump with cooking space intercommunication, the gas vent of vacuum pump and external atmosphere intercommunication, the vacuum pump can be to cooking space takes out. Thereby, the vacuum pump can evacuate the cooking space so that the pressure inside the cooking space is less than or equal to the predetermined threshold in a state where the predetermined threshold is less than the normal pressure.

Optionally, the lid body is provided with a slider return spring that biases the lid-opening slider toward the lock position. Thus, the slider return spring can position the lid opening slider at the lock position when not operated by the user.

Optionally, the lid opening slider has a fitting hole into which the float can extend to hold the lid opening slider in the locked position. Thereby, the door-opening slider having the fitting hole can be more stably fitted with the float.

Optionally, a limiting device is arranged in the pot body, the lid body is provided with a locking device used for being matched with the limiting device, the cover opening slider can be contacted with the locking device, the locking device is matched with the limiting device to make the pot body and the lid body inseparable when the cover opening slider is located at the locking position, and the locking device is disengaged from the limiting device to make the pot body separable from the lid body when the cover opening slider is located at the opening position. Therefore, the cooker body is provided with the limiting device, the cover body is provided with the locking device matched with the limiting device, the cover opening sliding block can be matched with the locking device, and the matching relation between the locking device and the limiting device is changed, so that the cover body can be allowed or prevented to be opened from the cooker body according to the pressure in the cooking space.

Optionally, a surface of the lid opening slider contacting the locking device is an inclined surface.

Optionally, the limiting device comprises a hook plate, and the locking device comprises a hook.

Drawings

The following drawings of embodiments of the invention are included as part of the present invention for an understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a sectional view of a cover of a cooking appliance according to a first preferred embodiment of the present invention, in which a float is located at a blocking position;

FIG. 2 is a cross-sectional view of the lid of the cooking appliance shown in FIG. 1, with the float in a retracted position;

fig. 3 is a sectional view of a cover of a cooking appliance according to a second preferred embodiment of the present invention, in which a float is located at a blocking position;

FIG. 4 is a cross-sectional view of the lid of the cooking appliance shown in FIG. 3, with the float in the retracted position;

fig. 5 is a sectional view of a cover of a cooking appliance according to a third preferred embodiment of the present invention, in which a float is located at a blocking position; and

fig. 6 is a cross-sectional view of the cover of the cooking appliance shown in fig. 5, wherein the float is in a retracted position.

Detailed Description

In the following discussion, details are given to provide a more thorough understanding of the present invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details. In certain instances, well known features have not been described in detail in order to avoid obscuring the invention. It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like are used herein for purposes of illustration only and are not to be construed as limiting.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

Generally, a cooking appliance includes a pot body and a lid body 100. The cooker body is basically in a round-corner cuboid shape and is provided with an inner pot containing part in a cylindrical shape, and the inner pot can be freely placed into or taken out of the inner pot containing part so as to be convenient for cleaning the inner pot. The inner pot is usually made of a metal material and provided with a circular opening in its upper surface for containing the material to be heated, such as rice, soup or the like. A heating means for heating the inner pot is generally included in the pot body. It is understood that the cooking appliance according to the present invention may be provided with various functions such as cooking porridge, etc., in addition to the function of cooking rice.

The cover body 100 has a substantially rounded rectangular parallelepiped shape and substantially corresponds to the shape of the pot body. The lid 100 is connected to the pot body in an openable and closable manner, and is used for covering the pot body. The cover body 100 includes a circular inner liner 130 and a detachable cover 180 detachably mounted to the inner liner 130. The removable cover 180 is generally circular and may be made of plastic or metal and is adapted to cover the upper surface opening of the inner pot to form a relatively enclosed cooking space. Of course, the removable cover 180 may have other shapes. Also, the cover body 100 may be provided in other shapes and structures as long as it can cover the pot body during cooking.

In addition, a position-limiting device is provided in the cooker body, and a locking device cooperating with the position-limiting device is provided in the lid body 100. For example, the position limiting means comprises a hook plate (not shown), and the locking means comprises a hook 111 cooperating with the hook plate. Specifically, a hook plate is located at the upper portion of the pot body, and the lower end of the hook 111 extends out of the lid body 100 for hooking with the hook plate. The upper end of the hook 111 is used to abut a lid opening slider 120, which will be described in detail later, and the hook 111 is pivotable about a pivot shaft 112 located in the lid body 100.

The lid opening slider 120 is located in the lid body 100, and the hook 111 is located outside the lid opening slider 120 and abuts against the lid opening slider 120. The hook 111 may be partially exposed on the surface of the cover 100, for example, an upper portion of the hook 111 may serve as a cap opening button for a user to press. Alternatively, the hook 111 may be pushed by a button member provided separately. When it is necessary to open the lid body 100, an external force acts on the door-opening buckle 110 at the upper end of the hook 111 to pivot the hook 111 about the above-mentioned pivot shaft 112, in such a manner that the lower end of the hook 111 can be released from the hooking with the hook plate. At this time, the pivoting of the hook 111 applies a force to the door opening slider 120 so that the door opening slider 120 moves from the locking position at the left end in fig. 2 to the opening position at the right end in fig. 1.

In other words, when the hook 111 is hooked with the hook plate, the lid 100 is coupled with the pot body, i.e., the lid 100 is inseparable from the pot body, and the lid-opening slider 120 is located at the locking position. And when the hook 111 is pushed, the hook 111 is unhooked from the hook plate, so that the lid body 100 is disconnected from the pot body, and the lid opening slider 120 is moved from the locking position to the opening position.

Furthermore, the cooking appliance may further include a pressure changing device, such as a vacuum pump, for increasing or decreasing the pressure within the cooking space. For example, the air inlet of the vacuum pump is communicated with the cooking space, the air outlet of the vacuum pump is communicated with the external atmosphere, and the vacuum pump can pump air out of the cooking space. Thereby, the pressure in the cooking space can be made less than or equal to the predetermined threshold in a state where the predetermined threshold is less than the normal pressure.

First embodiment

In order to prevent or allow the user to open the lid according to the pressure in the cooking space, the lid body 100 of the cooking appliance according to the present embodiment is further provided therein with a float assembly communicating with the inner pot, the float assembly including a float seat 140, a float 150, and an opening sealing portion.

The float seat 140 is provided on the liner 130, and the float seat 140 has an inner through hole communicating with a moving path of the door opening slider 120, and the float 150 is movable along the float seat 140 and enters the moving path of the door opening slider 120 through the top opening.

The float 150 is at least partially located in the interior throughbore and is movable in an up-and-down direction relative to the float seat 140 between a unseated position and a blocking position. In this way, the float 150 can stably move relative to the float seat 140.

In the illustrated embodiment, the opening sealing portion is changeable (switchable) between an initial state and an actuated state, which will be described in detail below, and in both the initial state and the actuated state, the opening sealing portion is capable of isolating the cooking space from the external atmosphere so that the pressure in the cooking space can be maintained.

The opening sealing portion includes a first sealing portion 171 and a second sealing portion 172, and the first sealing portion 171 and the second sealing portion 172 may be sealing rings made of a flexible material such as silicone. The second sealing portion 172 is provided at the bottom of the float 150 and is movable together with the float 150. And the first sealing portion 171 is disposed around the bottom of the float seat 140 and the float 150 and contacts the detachable cover 180.

As shown in fig. 2, in a state where the pressure in the cooking space is less than or equal to a predetermined threshold value, for example, in a state of normal pressure where the pressure in the cooking space is 4KPa, the float 150 is located at the fall-back position (i.e., a lower position) instead of the blocking position. As will be described in detail below, the opening sealing part is in an initial state, and the second sealing part 172 will isolate the cooking space from the external atmosphere. At this time, the movement of the lid opening slider 120 is not blocked by the float 150, so that the user does not receive resistance when pushing the hook 111, and the user can normally open the lid body 100.

Whereas as shown in fig. 1, in a state where the pressure in the cooking space is greater than a predetermined threshold, for example, greater than 4KPa, the float 150 is moved to the blocking position (i.e., the upper position) by an upward force, as described in detail below, the opening sealing portion is in an actuated state, and the first sealing portion 171 isolates the cooking space from the external atmosphere. At the blocking position, the float 150 blocks the movement of the lid opening slider 120 from the locking position toward the opening position. In other words, the float 150 in the blocking position is at least partially located on the moving path of the door slider 120, so that the door slider 120 cannot move from the locking position to the opening position. In this way, the user pushes the hook 111 with resistance transmitted from the float 150 to the hook 111 via the lid opening slider 120, which makes the hook 111 unable to pivot about the pivot shaft 112 by a sufficiently large angle, so that the lower end of the hook 111 cannot be unhooked from the hook plate, at which time the lid body 100 cannot be separated from the pot body, whereby the safety of the user can be ensured.

The cooking appliance according to the present embodiment has an opening in a lid body, a float assembly provided corresponding to the opening, and a lid-opening slider, the float assembly including a float seat, a float, and an opening seal portion. The opening seal portion includes a first seal portion and a second seal portion. In a state where the pressure in the cooking space is less than or equal to a predetermined threshold, the opening sealing portion is in an initial state, the second sealing portion isolates the cooking space from the outside atmosphere, and the float is located at a fall-back position; when the pressure in the cooking space is greater than the preset threshold value, the opening sealing part is in an actuating state, the first sealing part isolates the cooking space from the external atmosphere, and the floater is located at a blocking position to prevent the cover opening sliding block from moving to the opening position, so that a user cannot open the cover body, and personal injury brought to the user by opening the cover body when the pressure in the inner pot is high can be avoided.

When the opening sealing portion is in the initial state, the second sealing portion 172 abuts against the outer periphery of the opening 181 to seal the opening 181. Thereby, the second sealing portion 172 can abut against the opening 181, thereby better sealing. Further, the second sealing portion 172 includes an extension extending obliquely outward toward the opening 181. Thus, in a state where the pressure in the cooking space is less than or equal to the predetermined threshold value, the second sealing part 172 is moved toward the opening 181 by the small pressure in the cooking space, and the obliquely outwardly extending extension part is attached on the upper surface of the opening 181.

And the first sealing portion 171 includes a bent portion having a middle portion protruding outward. It will be appreciated that in a state where the pressure in the cooking space is greater than the predetermined threshold value, the greater pressure in the cooking space causes the opening sealing portion to be in an actuated state, and the bent portion protruding outward at the middle portion respectively abuts the inner liner 130 upward and the detachable cover 180 downward under the pressure, so that the first sealing portion 171 can be more firmly sealed.

It should be noted that, in the drawings of the present invention, only the fitting relationship between the first sealing portion and the second sealing portion and the detachable cover is shown, and the first sealing portion and the second sealing portion are both shown in a natural state, and a state after the first sealing portion and the second sealing portion are pressed and deformed is not shown.

In an alternative embodiment, in order to ensure that the door opening slider 120 can be moved accurately, a slider seat 122 may be provided in the cover body 100, and the door opening slider 120 may be movable relative to the slider seat 122. Also, the door opening slider 120 has a fitting hole 121, and the float 150 can extend into the fitting hole 121 to hold the door opening slider 120 at the lock position. Thereby, the door opening slider 120 having the fitting hole 121 can be more stably fitted with the float 150. Also optionally, the lid body 100 is provided with a slider return spring 160, and the slider return spring 160 biases the lid opening slider 120 toward the lock position to place the lid opening slider 120 at the lock position when the lid opening slider 120 is not operated by the user.

In addition, the surface of the door opening slider 120 contacting the upper end (the door opening buckle 110) of the hook 111 (i.e., the locking means) may be configured as a slope. In this way, when the user pushes the hook 111, the surface of the door release slider 120 configured as an inclined surface may better decompose the force of the rotation of the hook 111 about the pivot shaft 112 to the moving direction of the door release slider 120, so that the movement of the door release slider 120 is smoother.

Additionally, the float assembly may further include a float return spring 190, the float return spring 190 being disposed in the float seat 140 for biasing the float 150 toward the back position. In this way, when the pressure in the cooking space does not reach the predetermined threshold value, that is, the pressure in the cooking space is in a range safe to the user, the restoring force of the float return spring 190 causes the float 150 to be restored to the falling-back position, so that the door opening slider 120 can be moved to the open position.

Furthermore, the float 150 has a radial projection 151, the radial projection 151 being contactable with the float seat 140 to define the blocking position. Thus, the radial protrusion 151 limits the distance the float 150 moves upward relative to the float seat 140.

Second embodiment

The lid body 200 of the cooking appliance according to the present embodiment is further provided therein with a float assembly communicating with the inner pot, the float assembly including a float seat 240, a float 250, and an opening sealing portion.

The float seat 240 is provided on the detachable cover 280, and the float seat 240 has an inner through hole which communicates with a moving path of the cover opening slider 220, and the float 250 is movable along the float seat 240 and enters the moving path of the cover opening slider 220 through the top opening.

The float 250 is at least partially disposed in the interior throughbore and is movable in an up-and-down direction relative to the float seat 240 between a retracted position and a blocking position. In this way, the float 250 can stably move relative to the float seat 240.

The opening sealing portion includes a first sealing portion 271 and a second sealing portion 272, and the first sealing portion 271 and the second sealing portion 272 may be sealing rings made of a flexible material such as silicone and disposed around the float 250. Both the first sealing portion 271 and the second sealing portion 272 are provided on the float 250 and are movable together with the float 250, the first sealing portion 271 is located below the second sealing portion 272, and the second sealing portion 272 is located in the inner through hole, the first sealing portion 271 being located outside the inner through hole.

As shown in fig. 4, in a state where the pressure in the cooking space is less than or equal to a predetermined threshold value, for example, in a state of normal pressure where the pressure in the cooking space is 4KPa, the float 250 is located at the fall-back position (i.e., a lower position) instead of the blocking position. As will be described in detail later, the opening sealing portion is in an initial state, and the second sealing portion 272 can seal a gap between the float 250 and the upper surface of the bottom end of the inner through hole, thereby isolating the cooking space from the external atmosphere. At this time, the movement of the lid opening slider 220 is not blocked by the float 250, so that the user does not receive resistance when pushing the hook 211, and the user can normally open the lid body 200.

Whereas, as shown in fig. 3, in a state where the pressure in the cooking space is greater than a predetermined threshold, for example, greater than normal pressure, the float 250 is moved to the blocking position (i.e., the upper position) by an upward force, and the opening sealing portion is in an activated state as described in detail below, the first sealing portion 271 can seal the gap between the float 250 and the bottom-end lower surface of the inner through hole, thereby isolating the cooking space from the external atmosphere. At this blocking position, the float 250 blocks the movement of the lid opening slider 220 from the locking position toward the opening position. In other words, the float 250 in the blocking position is at least partially located on the moving path of the door slider 220 so that the door slider 220 cannot move from the locking position to the opening position. In this way, the user pushes the hook 211 with resistance transmitted from the float 250 to the hook 211 via the lid opening slider 220, which makes the hook 211 unable to pivot about the pivot shaft 212 by a sufficiently large angle so that the lower end of the hook 211 cannot be unhooked from the hook plate, at which time the lid body 200 cannot be separated from the pot body, whereby the safety of the user can be ensured.

The cooking appliance according to the present embodiment has an opening in a lid body, a float assembly provided corresponding to the opening, and a lid-opening slider, the float assembly including a float seat, a float, and an opening seal portion. The opening sealing part comprises a first sealing part and a second sealing part, the first sealing part and the second sealing part are both arranged on the floater and can move together with the floater, the first sealing part is positioned below the second sealing part, the second sealing part is positioned in the internal through hole, the first sealing part is positioned outside the internal through hole, the opening sealing part is in an initial state under the condition that the pressure in the cooking space is less than or equal to a preset threshold value, the second sealing part isolates the cooking space from the external atmosphere, and the floater is positioned at a falling-back position; when the pressure in the cooking space is greater than a preset threshold value, the opening sealing part is in an actuating state, the first sealing part isolates the cooking space from the outside atmosphere, and the floater is located at a blocking position to prevent the cover opening sliding block from moving to an opening position, so that a user cannot open the cover body, and personal injury brought to the user by opening the cover body when the pressure in the inner pot is high can be avoided.

As seen in fig. 3 and 4, the float 250 has two recesses provided in a radial direction of the float 250, and the first and

second sealing portions

271 and 272 are respectively received in the recesses. Thereby, the first seal portion and the second seal portion can be more firmly provided on the float. Further, the float 250 has a radial projection 251, and the radial projection 251 is located above the second sealing portion 272 to prevent the second sealing portion 272 from being withdrawn upward out of the recess.

In an alternative embodiment, in order to ensure that the door opening slider 220 can be accurately moved, a slider seat 222 may be provided in the cover body 200, and the door opening slider 220 may be movable with respect to the slider seat 222. In this embodiment, the door opening slider 220 has no fitting hole, and the float 250 can extend into the moving path of the door opening slider 220 and block the end of the door opening slider 220 to hold the door opening slider 220 at the locked position. Thereby, the door opening slider 220 can be more stably engaged with the float 250.

In addition, the surface of the door opening slider 220 contacting the upper end of the hook 211 (i.e., the locking means) may be configured as an inclined surface. In this way, when the user pushes the hook 211, the surface of the door opening slider 220 configured as an inclined surface may better decompose the force of the rotation of the hook 211 about the pivot shaft 212 to the moving direction of the door opening slider 220 to make the movement of the door opening slider 220 smoother.

Third embodiment

The cover 300 of the cooking appliance according to the present embodiment is further provided therein with a float assembly communicating with the inner pot, the float assembly including a float seat 340, a float 350, and an opening sealing portion.

The float seat 340 is provided on the detachable cover 380, and the float seat 340 has an inner through hole which communicates with the moving path of the cover opening slider 320, and the float 350 is movable along the float seat 340 and enters the moving path of the cover opening slider 320 through the top opening.

The float 350 is at least partially disposed in the interior throughbore and is movable in an up-and-down direction relative to the float seat 340 between a retracted position and a blocking position. In this way, the float 350 can stably move relative to the float seat 340.

In the illustrated embodiment, the opening sealing portions are changeable (switchable) between an initial state and an actuated state, which will be described in detail below, and in the initial state, the opening sealing portions are each able to isolate the cooking space from the outside atmosphere so that the pressure in the cooking space can be maintained.

Specifically, the opening sealing part is a reed 370, and the reed 370 may be made of a metal material and can be quickly switched between an initial state and an actuated state. The reed 370 can be secured to the removable cover 380 as shown and communicate with the cooking volume via an opening and form an enclosed area.

Reed 370 can isolate the cooking volume from the outside atmosphere in the initial state as shown in FIG. 6, and since reed 370 is secured to removable cover 380, reed 370 can also isolate the cooking volume from the outside atmosphere in the actuated state as shown in FIG. 5. In other words, the pressure in the space between the reed 370 and the removable cover 380 is the same as the pressure in the cooking space, whether in the initial state or in the actuated state.

As shown in fig. 6, in a state where the pressure in the cooking space is less than or equal to a predetermined threshold value, for example, in a state of normal pressure where the pressure in the cooking space is 4KPa, the float 350 is located at the fall-back position (i.e., a lower position) instead of the blocking position. As will be described in detail below, the reed 370 is in an initial state and isolates the cooking space from the outside atmosphere. At this time, the movement of the lid opening slider 320 is not blocked by the float 350, so that the user does not receive resistance when pushing the hook 311, and the user can normally open the lid body 300.

Whereas as shown in fig. 5, in a state where the pressure in the cooking space is greater than the predetermined threshold value, for example, greater than atmospheric pressure, reed 370 is actuated to deform, and float 350 is displaced upward by reed 370 and the pressure in the cooking space to a blocking position (i.e., a higher position), while reed 370 still isolates the cooking space from the outside atmosphere. And at the blocking position, the float 350 blocks the movement of the lid opening slider 320 from the locking position toward the opening position. In other words, the float 350 in the blocking position is at least partially located on the moving path of the door slider 320, so that the door slider 320 cannot move from the locking position to the opening position. In this way, the user pushes the hook 311 with resistance from the float 350 and transmitted to the hook 311 via the lid opening slider 320, which makes the hook 311 unable to pivot about the pivot shaft by a sufficiently large angle so that the lower end of the hook 311 cannot be unhooked from the hook plate, at which time the lid body 300 cannot be separated from the pot body, whereby the safety of the user can be ensured.

The cooking appliance according to the present embodiment has an opening in a lid body, a float assembly provided corresponding to the opening, and a lid-opening slider, the float assembly including a float seat, a float, and an opening seal portion. The opening sealing part is arranged around the opening, the top of the opening sealing part abuts against the bottom end of the floater, the opening sealing part is in an initial state under the condition that the pressure in the cooking space is smaller than or equal to a preset threshold value, the second sealing part isolates the cooking space from the outside atmosphere, and the floater is located at a falling-back position; when the pressure in the cooking space is greater than the preset threshold value, the opening sealing part is in an actuating state, the floater is located at a blocking position to prevent the cover opening sliding block from moving to the opening position, so that a user cannot open the cover body, and personal injury brought to the user by opening the cover body when the pressure in the inner pot is high can be avoided.

As shown in fig. 5, the float 350 may have a radial projection 351, the radial projection 351 being contactable with the float seat 340 to define the blocking position. Thus, the radial protrusion 351 limits the distance that the float 350 moves upward relative to the float seat 340.

In an alternative embodiment, in order to ensure that the door opening slider 320 can be accurately moved, a slider seat 322 may be provided in the cover body 300, and the door opening slider 320 may be movable with respect to the slider seat 322. Also, the door-opening slider 320 has a fitting hole 321, and a float 350 can extend into the fitting hole 321 to hold the door-opening slider 320 at the locked position. Thereby, the door-opening slider 320 having the fitting hole 321 can be more stably fitted with the float 350. Also optionally, the lid body 300 is provided with a slider return spring 360, and the slider return spring 360 biases the lid-opening slider 320 toward the lock position to place the lid-opening slider 320 at the lock position when the lid-opening slider 320 is not operated by the user.

In addition, the surface of the door opening slider 320 contacting the upper end of the hook 311 (i.e., the locking means) may be configured as an inclined surface. In this way, when the user pushes the hook 311, the surface of the door release slider 320 configured as the slope may better decompose the force of the rotation of the hook 311 about the pivot axis to the moving direction of the door release slider 320, so that the movement of the door release slider 320 is smoother.

Further, in another embodiment, for example, the open sealing portion of reed 370 is attached to the bottom end of float 350, while the open sealing portion is not attached to removable cover 380. Thus, it can be appreciated that when the opening seal is in an actuated state, reed 370 moves away from removable cover 380 with upward movement of the float, such that in the actuated state, reed 370 cannot provide a seal against opening 381. Further, the cover body may further include a float seal 373, the float seal 373 being disposed around the opening seal, and an upper end of the float seal 373 abutting a bottom end of the float seat 340 and a lower end abutting the removable cover 380. So that the float seal 373 can isolate the cooking space from the outside atmosphere in a state where the pressure in the cooking space is greater than a predetermined threshold value.

The float seal 373 may include a bent portion having a middle portion protruding outward. It will be appreciated that in a state where the pressure in the cooking space is greater than the predetermined threshold, the greater pressure in the cooking space causes the opening seal to be in an actuated state, and the middle outwardly projecting bent portion respectively abuts the inner liner 330 upwardly and the detachable cover 380 downwardly under the pressure, so that the float seal 373 can be more securely in abutting seal.

It should be noted that, in the drawings of the present invention, only the fitting relationship between the float seal ring and the detachable cover is shown, and the float seal ring is shown in a natural state, and a state after the float seal ring is crushed and deformed is not shown.

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 belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated 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 scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the invention, which fall within the scope of the invention as claimed.

Claims

1. A cooking appliance, comprising:

the cooker body is internally provided with an inner pot; and

the float assembly includes:

a float seat having an internal through hole;

an opening seal that is changeable between an initial state and an actuated state by the float, and that is capable of isolating the cooking space from an outside atmosphere in both the initial state and the actuated state, the opening seal including a first seal portion and a second seal portion, both the first seal portion and the second seal portion being disposed on the float, the first seal portion being located below the second seal portion and the first seal portion being located outside the interior through hole, the second seal portion being located in the interior through hole;

wherein, in a state where the pressure in the cooking space is less than or equal to a predetermined threshold value, the opening sealing portion is in the initial state, the second sealing portion isolates the cooking space from the external atmosphere, and the float is located at the fallback position;

in a state where the pressure in the cooking space is greater than the predetermined threshold value, the opening sealing portion is in the actuated state, the first sealing portion isolates the cooking space from the outside atmosphere, and the float is located at the blocking position to prevent the lid opening slider from moving to the open position.

2. The cooking appliance of claim 1, wherein the first and second sealing portions are sealing rings disposed around the float.

3. The cooking appliance according to claim 1, wherein the float has a recess portion provided in a radial direction of the float, and the first seal portion and the second seal portion are accommodated in the recess portion.

4. The cooking appliance of claim 3, wherein the float has a radial projection above the second seal to prevent the second seal from exiting the recess.

5. The cooking appliance of claim 1, further comprising a vacuum pump having an inlet in communication with the cooking volume and an outlet in communication with the ambient atmosphere, the vacuum pump being capable of evacuating the cooking volume.

6. The cooking appliance according to claim 1, wherein a stopper is provided in the pot body, the lid body is provided with a locking means for cooperating with the stopper, the lid opening slider is contactable with the locking means, the locking means cooperates with the stopper so that the pot body is inseparable from the lid body in a state where the lid opening slider is in the locked position, and the locking means disengages from the stopper so that the pot body is separable from the lid body in a state where the lid opening slider is in the open position.

7. The cooking appliance according to claim 6, wherein a surface of the lid opening slider contacting the locking means is a slope.

8. The cooking appliance of claim 6, wherein the limiting means comprises a hook plate and the locking means comprises a hook.