CN210446650U - Pot cover assembly of cooking utensil and cooking utensil that has it - Google Patents

Abstract

The utility model discloses a pot cover assembly of a cooking appliance and the cooking appliance with the pot cover assembly, wherein the pot cover assembly comprises a pot cover component, and the pot cover component is provided with an air vent which is suitable for being communicated with a cooking cavity of the cooking appliance; the first pressure relief valve is arranged on the pot cover assembly and comprises a valve body and a valve rod, the valve body is provided with a first pressure relief channel, an inlet of the first pressure relief channel is communicated with the atmosphere, an outlet of the first pressure relief channel is communicated with the vent hole, and the valve rod moves between a position where the inlet and the outlet are communicated and a position where the inlet and the outlet are disconnected; the transmission piece is rotatably arranged on the pot cover component and is connected with the valve rod to drive the valve rod to move; and the cover opening assembly is connected with the transmission part and rotates through the driving transmission part to drive the valve rod to move. According to the utility model discloses cooking utensil's pot cover assembly's simple structure, can realize quick pressure release.

Description

Pot cover assembly of cooking utensil and cooking utensil that has it

Technical Field

The utility model belongs to the technical field of kitchen appliance and specifically relates to a cooking utensil's pot cover assembly and cooking utensil who has it is related to.

Background

Cooking utensil among the correlation technique, for example vacuum electric rice cooker, adopt opening and closing of electro-magnet seal assembly control steam port usually, this electro-magnet seal assembly is usually by electro-magnet assembly, the sealing member, push rod and reset spring constitute, for reduce cost, electro-magnet assembly adopts the less electro-magnet of power usually, however, when closing the steam port through electro-magnet seal assembly, and realize cooking intracavity negative pressure back through the vacuum pump, because electro-magnet power is less, cause the reset spring force of electro-magnet to reduce greatly easily, be not enough the negative pressure suction in the cooking intracavity that the sealing washer received, and then lead to unable in time opening the steam port and realize the pressure release, make the user can not uncap, reduce user experience, and electro-magnet seal assembly is under the pressure release operation repeatedly many times, the reliability reduces.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a cooking utensil's pot cover assembly, cooking utensil's pot cover assembly's simple structure, can realize quick pressure release.

The utility model also provides a cooking utensil of pot cover assembly who has above-mentioned cooking utensil.

According to the utility model discloses cooking utensil's pot cover assembly of first aspect embodiment includes: a lid assembly having an air vent adapted to communicate with a cooking cavity of the cooking appliance; the first pressure relief valve is arranged on the pot cover assembly and comprises a valve body and a valve rod, the valve body is provided with a first pressure relief channel, an inlet of the first pressure relief channel is communicated with the atmosphere, an outlet of the first pressure relief channel is communicated with the vent hole, and the valve rod moves between a position where the inlet and the outlet are communicated and a position where the inlet and the outlet are disconnected; the transmission piece is rotatably arranged on the pot cover component and is connected with the valve rod to drive the valve rod to move; and the cover opening assembly is connected with the transmission piece and drives the transmission piece to rotate so as to drive the valve rod to move.

According to the utility model discloses cooking utensil's pot cover assembly, through adopting first relief valve to replace the electro-magnet seal assembly among the correlation technique, utilize the subassembly control driving medium that uncaps, and then the first relief valve of control realizes the intercommunication and the disconnection between culinary art chamber and the atmosphere, realize quick pressure release effectively, and then realize the equilibrium between atmospheric pressure and the atmospheric pressure of culinary art intracavity, the user of being convenient for opens the pot cover assembly in any stage, the spring force that resets that does not have the electro-magnet reduces greatly, be not enough to offset the negative pressure suction of the culinary art intracavity that the sealing washer received and lead to the problem of unable timely pressure release.

According to some embodiments of the utility model, the one end of valve rod is located in the first pressure release passageway, be used for the switching the export is in order to realize the import with break-make between the export.

According to some examples of the invention, the internal face of first pressure release passageway is equipped with and encircles the interior collar of export, the one end of valve rod is equipped with first sealing member the valve rod is closed under the state of export first sealing member end to interior collar.

According to some embodiments of the utility model, first relief valve still includes pull tab and connecting rod, the connecting rod is connected pull tab with between the valve rod and the cross sectional area of connecting rod is less than the cross sectional area of valve rod and the cross sectional area of pull tab, the driving medium through with the cooperation of connecting rod realize with the connection of valve rod.

According to some examples of the invention, the valve rod, the pull tab and the connecting rod are integrally formed.

According to some embodiments of the utility model, first relief valve still includes the piece that resets, the cover that resets is located the valve rod just the both ends of the piece that resets respectively with the valve rod with the valve body butt promotes with usual the valve rod is closed the export.

According to some examples of the invention, the valve rod is located in the valve body, the side peripheral wall of valve rod is equipped with the support edge of evagination, reset piece butt in support edge with between the inner wall of valve body.

According to some embodiments of the invention, the valve body comprises: a valve seat provided to the lid assembly and having a guide passage extending along a center line of the outlet, the valve stem being movable along the guide passage; the valve cover is arranged at the top of the valve seat and defines the first pressure relief channel together with the valve seat, and the outlet is arranged on the valve cover.

According to some examples of the invention, the inlet is provided in a side peripheral wall of the valve cover, the diameter of the inlet is d, and d is greater than or equal to 1mm and less than or equal to 2 mm.

According to some examples of the invention, the inlet comprises a plurality of inlet cross-sectional areas, the sum of the inlet cross-sectional areas is s, s is greater than or equal to 3.14mm²。

According to some examples of the invention, the pot cover subassembly has the pot cover that upwards extends along vertical direction and fixes detaining, the disk seat be equipped with at least two with the fixed knot complex disk seat of detaining of pot cover is fixed detains.

According to some examples of the invention, the valve seat retaining buckle comprises: one end of the first straight section is connected with the valve seat, and the other end of the first straight section extends upwards along the vertical direction; one end of the bending section is connected with the other end of the first straight section; the second straight section and the first straight section are arranged at intervals, one end of the second straight section is connected with the other end of the bent section, and the other end of the second straight section forms a valve seat clamping part which is suitable for being clamped with the pot cover fixing buckle.

According to some examples of the utility model, the periphery wall of valve gap is equipped with the fixed knot of valve gap of two at least interval arrangements, the disk seat is equipped with the disk seat fixed orifices of two at least interval arrangements, at least two the fixed knot one-to-one ground joint in two at least of valve gap the disk seat fixed orifices.

According to some embodiments of the utility model, the pot cover subassembly is equipped with the supporting seat, the driving medium forms shaft-like, the driving medium is rotationally located the supporting seat, the one end of driving medium with the valve rod is connected, the other end of driving medium with the subassembly of uncapping is connected.

According to some embodiments of the utility model, the pot cover subassembly have be suitable for with the aspirating hole of culinary art chamber intercommunication, be equipped with air exhaust device in the pot cover subassembly, air exhaust device with the aspirating hole is connected, is used for with form the negative pressure in the culinary art intracavity.

According to some examples of the present invention, the air exhaust hole and the air vent are the same air hole and the air hole is switchably communicated with the outlet of the first pressure relief passage and the air exhaust device; or the air suction hole and the air vent are two air holes which are independent mutually.

According to some examples of the invention, the pot cover assembly further comprises: a one-way valve disposed between the extraction aperture and the extraction device, the one-way valve configured to be one-way only when airflow is flowing from the extraction aperture to the extraction device.

According to some examples of the invention, the check valve has a valve chamber and a case, the inlet port of valve chamber with the aspirating hole intercommunication, the venthole of valve chamber with air exhaust device intercommunication, the case is in the intercommunication the inlet port with the position and the disconnection of venthole the inlet port with move between the position of venthole.

According to some examples of the utility model, the case is located in the valve pocket, be used for the switching the inlet port is in order to realize the inlet port with the break-make of venthole, wherein, the case cover is equipped with the elastic component, the both ends of elastic component respectively with the case with keeping away from of valve pocket the inner wall butt of inlet port is with normal promotion the case is closed the inlet port.

According to the utility model discloses cooking utensil of second aspect embodiment, include according to the utility model discloses cooking utensil's pot cover assembly of first aspect embodiment.

According to the utility model discloses cooking utensil is through adopting the basis the utility model discloses cooking utensil's pot cover assembly of the first aspect embodiment has characteristics such as simple structure, reliability height, quick pressure release.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front view of a lid assembly of a cooking appliance according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is an exploded view of a first pressure relief valve of a lid assembly of a cooking appliance according to an embodiment of the present invention;

fig. 5 is a top view of a first pressure relief valve of a lid assembly of a cooking appliance according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 5;

fig. 8 is a cross-sectional view of a one-way valve of a lid assembly of a cooking appliance according to an embodiment of the present invention;

fig. 9 is a front view of a pot cover assembly of a cooking appliance according to yet another embodiment of the present invention;

fig. 10 is a schematic view of a cooking appliance according to yet another embodiment of the present invention without a second pressure relief valve installed in the lid assembly;

fig. 11 is an enlarged view of a portion E of fig. 10;

fig. 12 is a front view of a pot cover assembly of a cooking appliance according to another embodiment of the present invention.

Reference numerals:

a pot cover assembly 100;

a lid assembly 10; a pot cover fixing buckle 11; a vent hole 12;

a limiting rib 13; an inclined plane rib 14; a guide surface 141; a stop surface 142;

an elastic buckle 15; a hook head portion 151; a support rib 16;

a first pressure relief valve 20;

a valve cover 21; an inlet 211; a bonnet securing clasp 212; an outlet 213; an inner collar 214;

a valve seat 22; a guide passage 221;

a valve seat retaining buckle 222; a first straight section 2221; bend section 2222; a second straight section 2223; a latching portion 22231;

a valve stem 231; a connecting rod 232; a drawing sheet 233; a support rim 2311;

a reset member 24; a first seal 25;

a transmission member 30; a support base 31;

a check valve 40; a valve chamber 41; a valve spool 42; an elastic member 43; a suction hole seal 44;

an intake hole 411; an air outlet 412; an intake passage 413;

an air extraction device 50; a second pressure relief valve 60; the door release assembly 70.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A pot lid assembly 100 of a cooking appliance according to an embodiment of the present invention is described below with reference to the accompanying drawings, wherein the cooking appliance may be a vacuum electric cooker, an electric pressure cooker, or the like.

As shown in fig. 1 to 12, a lid assembly 100 of a cooking appliance according to an embodiment of the present invention includes a lid assembly 10, a first pressure release valve 20, a transmission member 30, and a lid opening assembly 70.

The pot cover assembly 10 can be openly and closably established on cooking utensil's the pot body in order to open and close the cooking chamber, pot cover assembly 10 is equipped with the air vent 12 with the cooking chamber intercommunication, first relief valve 20 is established on pot cover assembly 10, and first relief valve 20 includes valve body and valve rod 231, the valve body has first pressure release channel, first pressure release channel's import 211 communicates with the atmosphere, and first pressure release channel's export 213 communicates with air vent 12, valve rod 231 moves between the position of communicating import 211 and export 213 and the position of disconnection import 211 and export 213, like this, through controlling the valve rod 231 of first relief valve 20 to move can make through first pressure release channel between cooking utensil's the cooking chamber and the atmosphere intercommunication or disconnection.

Further, the transmission member 30 is movably disposed on the lid assembly 10, and the transmission member 30 is connected to the valve rod 231, and meanwhile, the lid assembly 70 is connected to the transmission member 30, so that the user can drive the transmission member 30 to move by controlling the lid assembly 70, and then the transmission member 30 drives the valve rod 231 to move, thereby moving the valve rod 231 between a position where the inlet 211 and the outlet 213 are connected to each other and a position where the inlet 211 and the outlet 213 are disconnected from each other is achieved. Like this, when cooking utensil's culinary art intracavity was in vacuum state, through first relief valve 20 of driving medium 30 control make between culinary art chamber and the atmosphere through first pressure release channel intercommunication, realize culinary art chamber and atmospheric pressure balance, and then make the culinary art intracavity realize quick pressure release, convenience of customers uncaps.

According to the utility model discloses cooking utensil's pot cover assembly 100, through adopting first relief valve 20 to replace the electro-magnet seal assembly among the correlation technique, utilize subassembly 70 control driving medium 30 that uncaps, and then control first relief valve 20 and realize the intercommunication and the disconnection between culinary art chamber and the atmosphere, realize quick pressure release effectively, and then realize the equilibrium between atmospheric pressure and the atmospheric pressure of culinary art intracavity, the user of being convenient for opens the pot cover assembly in any stage, the spring force that resets that does not have the electro-magnet reduces greatly, be not enough to offset the negative pressure suction of the culinary art intracavity that the sealing washer received and lead to the problem of unable timely pressure release.

In some embodiments of the present invention, the pot cover assembly 100 further includes an electromagnet sealing component, the electromagnet sealing component mainly comprises an electromagnet component, a push rod, a sealing member and a return spring, the electromagnet component is connected to the push rod to move, the sealing member is disposed at the top of the push rod, and the electromagnet component pushes the push rod to move so as to drive the sealing member to block or open the pressure relief hole (not shown).

Therefore, by simultaneously adopting the first pressure release valve 20 and the electromagnet sealing component to release pressure, compared with the scheme of only adopting the electromagnet sealing component to release pressure in the related art, the use times of the electromagnet sealing component can be effectively reduced, and the pressure release range can be reduced, so that the service life of the electromagnet sealing component is prolonged, and meanwhile, the reliability of the pot cover assembly 100 can be further improved.

As shown in fig. 4 and 6, according to some embodiments of the present invention, in order to make the overall structure of the first pressure relief valve 20 more compact, one end of the valve rod 231 is disposed in the first pressure relief passage, and the valve rod 231 is opened and closed by the outlet 213 to open and close the inlet 211 and the outlet 213.

As shown in fig. 6, in a further example of the present invention, the inner wall surface of the first pressure relief passage is provided with an inner collar 214, the inner collar 214 is disposed around the outlet 213, and at the same time, one end (e.g., the upper end in fig. 6) of the valve rod 231 is provided with a first sealing member 25, the first sealing member 25 may be a rubber member, and when the valve rod 231 moves upward to close the outlet 213, the inner collar 214 is stopped by the first sealing member 25, thereby enhancing the sealing performance of the first pressure relief valve 20.

As shown in fig. 3, 4 and 6, in some embodiments of the present invention, the first pressure relief valve 20 further includes a drawing piece 233 and a connecting rod 232, the upper end of the drawing piece 233 and the lower end of the valve rod 231 are respectively connected to two ends of the connecting rod 232, the transmission member 30 is matched with the connecting rod 232, so as to be connected to the valve rod 231, and the cross-sectional area of the connecting rod 232 is smaller than that of the valve rod 231 and the cross-sectional area of the connecting rod 232 is smaller than that of the drawing piece 233, so that the transmission member 30 can be limited between the drawing piece 233 and the valve rod 231, and the transmission member 30 and the connecting rod 232 can be conveniently assembled.

As shown in fig. 4 and 6, in some examples of the present invention, in order to enhance the structural strength, improve the reliability of the first relief valve 20, and simplify the manufacturing process, the valve rod 231, the pull tab 233, and the connecting rod 232 are integrally formed.

As shown in fig. 4 and 6, in some embodiments of the present invention, the first pressure relief valve 20 further includes a reset piece 24, the reset piece 24 may be a spring, the reset piece 24 is sleeved on the valve rod 231, and two ends of the reset piece 24 are respectively abutted against the valve rod 231 and the valve body, so as to normally push the valve rod 231 to move towards the outlet 213 direction to close the outlet 213, and thus, the first pressure relief valve 20 can be in a state of disconnecting the atmosphere from the communication with the cooking cavity when the cooking cavity is closed by the lid assembly 10, and further, the cooking cavity can form a negative pressure under the action of the air exhaust device 50 and other components.

It should be noted that the term "normally push" used herein means that the restoring member 24 is in an elastically deformed state, for example, the restoring member 24 is in an elastically compressed state, and at this time, the restoring member 24 pushes the valve rod 231 to move toward the outlet 213 under the elastic force of the restoring deformation, so as to close the outlet 213.

As shown in fig. 6, in a further example of the present invention, the valve rod 231 is disposed in the valve body, the lateral peripheral wall of the valve rod 231 is provided with a support edge 2311 protruding outward, and the two ends of the reset piece 24 can normally push the valve rod 231 to close the outlet 213 by respectively abutting against the lower surface of the support edge 2311 and the inner wall of the valve body, thereby facilitating the assembly between the reset piece 24 and the valve rod 231 and improving the reliability of opening and closing the outlet 213 by the valve rod 231.

As shown in fig. 4 and 6, in some embodiments of the present invention, the valve body mainly comprises a valve seat 22 and a valve cover 21, the valve seat 22 is disposed on the lid assembly 10, and the valve seat 22 has a guiding channel 221, the guiding channel 221 extends along the center line of the outlet 213, and the valve rod 231 is movable along the guiding channel 221, so that the valve rod 231 can be ensured to be opposite to the outlet 213 to open and close the outlet 213, and at the same time, the valve rod 231 can be ensured to be moved along the guiding channel 221 and also to be moved reliably by the transmission member 30.

Further, a valve cover 21 is provided on the top of the valve seat 22 and defines a first pressure relief passage together with the valve seat 22, and an outlet 213 is provided on the valve cover 21, for example, as shown in fig. 6, the outlet 213 is provided on the top of the valve cover 21, so as to facilitate the engagement of the valve rod 231 with the outlet 213 for opening and closing the outlet 213, and thus for connecting and disconnecting the cooking chamber with the atmosphere.

As shown in fig. 4 and 6, in some examples of the present invention, the inlet 211 is provided on the side peripheral wall of the valve cover 21, the inlet 211 may be a circular hole, the diameter d of the inlet 211 is between 1mm and 2mm, for example, the diameter d of the inlet 211 may be 1mm, 1.5mm, 2mm or other dimensions, so that the inlet 211 may have a filtering function by setting the dimension of the inlet 211, and thus, external foreign objects are prevented from entering the cooking cavity through the first pressure relief passage.

As shown in fig. 4 and 6, in some examples of the present invention, the inlet 211 may be a plurality of inlets, the sum of the cross-sectional areas of the plurality of inlets 211 is S, and S is greater than or equal to S3.14mm²Thereby, the air inlet speed of the first pressure release valve 20 is ensured by setting the cross sectional area of the inlet 211, and the external air enters the first pressure release channel during pressure release, thereby ensuring the quick pressure release effect of the pot cover assembly 100.

Preferably, the inlet ports 211 may be arranged in an array along the side peripheral wall of the valve cover 21, and the sum of the cross-sectional areas of the inlet ports 211 is greater than the cross-sectional area of the outlet port 213, so that the filtering effect is ensured while the rapid pressure relief effect is ensured.

As shown in fig. 6, in some examples of the present invention, in order to facilitate the assembly and disassembly between the first pressure release valve 20 and the lid assembly 10, the lid assembly 10 has a lid fixing buckle 11, the lid fixing buckle 11 extends upward along a vertical direction, the valve seat 22 is provided with at least two valve seat fixing buckles 222, and the valve seat fixing buckles 222 are opposite to the lid fixing buckle 11, and can cooperate with the lid fixing buckle 11 to fix the first pressure release valve 20 to the lid assembly 10.

As shown in fig. 6, in some examples of the present invention, the valve seat fixing buckle 222 is mainly composed of a first straight section 2221, a bent section 2222 and a second straight section 2223, one end of the first straight section 2221 is connected to the valve seat 22, and the other end extends upward in the vertical direction, one end of the bent section 2222 is connected to the other end of the first straight section 2221, the second straight section 2223 is spaced apart from the first straight section 2221, and one end of the second straight section 2223 is connected to the other end of the bent section 2222, and the other end of the second straight section 2223 forms a buckling part 22231 capable of buckling with the lid fixing buckle 11, so that the valve seat fixing buckle 222 has a certain elasticity by spacing the first straight section 2221 and the second straight section 2223 and connecting through the bent section 2222, thereby facilitating the assembly, and at the same time, the lid fixing buckle 11 extends upward in the vertical direction, so that after the lid fixing buckle 11 is matched with the buckling part 22231, a gap is formed between the bottom end of the lid assembly 10, facilitating movement of the transmission member 30 within the clearance.

As shown in fig. 4 and 7, in some examples of the present invention, in order to ensure that the assembly between the valve cover 21 and the valve seat 22 is reliable and easy to disassemble, the outer peripheral wall of the valve cover 21 is provided with at least two valve cover fixing buckles 212, at least two valve cover fixing buckles 212 may be symmetrically arranged, the valve seat 22 is provided with at least two valve seat 22 fixing holes arranged at intervals, and the position of the valve seat 22 fixing hole is opposite to the position of the valve cover fixing buckle 212, so that at least two valve cover fixing buckles 212 may be clamped in the valve seat 22 fixing holes in a one-to-one correspondence manner, thereby realizing the assembly between the valve seat 22 and the valve cover 21.

As shown in fig. 3, in some embodiments of the present invention, the pot cover assembly 10 further includes a supporting seat 31, the transmission member 30 generally forms a rod-like structure, the transmission member 30 is rotatably disposed on the supporting seat 31, and one end of the transmission member 30 is connected to the valve rod 231, and the other end of the transmission member is connected to the cover opening assembly 70, so that the transmission member 30 is driven to rotate by the cover opening assembly 70, and further the valve rod 231 is driven to move to realize the on/off of the first pressure relief channel.

As shown in fig. 1 and 2, in some embodiments of the present invention, the pot cover assembly 10 is provided with an air exhaust hole (not shown) communicated with the cooking cavity, and the pot cover assembly 10 is provided with an air exhaust device 50, and the air exhaust device 50 is connected with the air exhaust hole, so that the cooking cavity can be evacuated to a negative pressure by using the air exhaust device 50. The air extractor 50 may be a vacuum pump or a cylinder-piston assembly.

As shown in fig. 1 and fig. 2, in the further example of the present invention, the air exhaust hole and the air vent 12 can be the same air vent (as shown in fig. 1), and the air vent is respectively communicated with the outlet 213 of the first pressure relief channel and the air exhaust device 50, thus, the air exhaust device 50 can exhaust the gas in the cooking cavity through the air vent to realize the negative pressure in the cooking cavity, and simultaneously, the first pressure relief valve 20 can be communicated with the air vent through the first pressure relief channel, so that the external gas can enter the cooking cavity through the first pressure relief channel, and further realize the rapid pressure relief in the cooking cavity, so as to balance the pressure in the cooking cavity with the external air pressure, and facilitate opening the lid assembly 100.

And in other examples of the utility model, air vent 12 and aspirating hole are two gas pockets independent respectively, and air exhaust device 50 communicates with the aspirating hole, and first relief valve 20 communicates with air vent 12, can make things convenient for arranging of air exhaust device 50 and first relief valve 20 like this, simplifies the connecting line.

As shown in fig. 2 and 8, in some examples of the present invention, the pot cover assembly 100 further includes a check valve 40, the check valve 40 is disposed between the air exhaust hole and the air exhaust device 50, and the check valve 40 is configured to be in one-way communication when the air current can only flow from the air exhaust hole to the air exhaust device 50, so that the air in the cooking cavity is exhausted through the check valve 40 by the air exhaust device 50 to realize the vacuum state of the cooking cavity.

As shown in fig. 8, in some examples of the present invention, the check valve 40 has a valve cavity 41 and a valve core 42 disposed in the valve cavity 41, an air inlet 411 of the valve cavity 41 communicates with an air exhaust hole, an air outlet 412 of the valve cavity 41 communicates with an air exhaust device 50, and simultaneously, the valve core 42 moves between the positions of the communicating air inlet 411 and the air outlet 412 and the positions of the disconnecting air inlet 411 and the air outlet 412, so that the gas in the cooking cavity can enter the valve cavity 41 through the air exhaust hole and the air inlet 411, and then enter the air exhaust device 50 through the air outlet 412, thereby realizing the vacuum state in the cooking cavity.

As shown in fig. 8, in a further example of the present invention, the valve core 42 is disposed in the valve cavity 41, and can be opened and closed to open and close the air inlet 411 to realize the opening and closing of the air inlet 411 and the air outlet 412, and meanwhile, in order to realize the one-way conduction of the check valve 40, the valve core 42 is sleeved with an elastic member 43, such as a spring, and two ends of the elastic member 43 are respectively abutted to the inner walls of the valve core 42 and the valve cavity 41 (top wall of the valve cavity 41 in fig. 8), which are far away from the air inlet 411, so as to normally push the valve core 42 to close.

It should be noted that the term "normally pushed" used herein means that the elastic member 43 is in an elastically deformed state, for example, the elastic member 43 is in an elastically compressed state, and at this time, the elastic member 43 pushes the valve core 42 to move toward the air hole 411 under the elastic force of the restored deformation, so as to close the air hole 411.

As shown in fig. 8, in some examples, the valve cavity 41 of the check valve 40 further has an air inlet passage 413, the air inlet passage 413 is communicated with an air exhaust hole, and the outlet 213 of the first pressure relief valve 20 is connected to the air inlet passage 413 through a connecting pipeline, so that the first pressure relief valve 20 and the air exhaust device 50 can be communicated with the cooking cavity through the check valve 40 and share one air exhaust hole, thereby facilitating the structure simplification and making the whole structure of the pot cover assembly 100 more compact.

Further, in some examples, to enhance the sealing reliability between the check valve 40 and the suction hole, a suction hole seal 44 is provided between the check valve 40 and the suction hole.

As shown in fig. 9 and 12, in some embodiments of the present invention, in order to avoid the failure of the first pressure release valve 20, which results in the unable pressure release, the reliability of the rapid pressure release is enhanced, the pot cover assembly 100 further includes a second pressure release valve 60, and the pot cover assembly 10 has an air hole communicating with the cooking cavity, the second pressure release valve 60 is disposed on the pot cover assembly 10, and communicates with the cooking cavity through the air hole, so that the second pressure release valve 60 is used to realize the on-off of the air hole and the atmosphere, and further, the pressure in the cooking cavity is maintained or released.

As shown in fig. 12, in some examples of the present invention, the air hole and the air hole 12 may be the same air hole, and the air hole may communicate with the atmosphere through the first pressure release valve 20, may communicate with the atmosphere through the second pressure release valve 60, or communicate with the atmosphere through the first pressure release valve 20 and the second pressure release valve 60 at the same time, so that the first pressure release valve 20 and the second pressure release valve 60 share one air hole, the structure of the lid assembly 10 is simplified, and the lid assembly 100 is more compact as a whole.

In other examples, to facilitate the arrangement of the first pressure relief valve 20 and the second pressure relief valve 60, and improve reliability, the air passing hole and the vent hole 12 are independent air holes, the first pressure relief valve 20 may be communicated with the vent hole 12, and the second pressure relief valve 60 may be communicated with the air passing hole.

In some examples of the present invention, the second pressure release valve 60 may be an electromagnetic on-off valve, and thus, the electromagnetic on-off valve and the first pressure release valve 20 (mechanical on-off valve) may be utilized to realize the rapid pressure release of the double pressure release valves, thereby improving the reliability of the pressure release.

As shown in fig. 10 and 11, in some examples of the present invention, the lid assembly 10 has a plurality of limiting ribs 13 extending in the vertical direction, and the plurality of limiting ribs 13 are arranged along the circumferential direction of the second relief valve 60 so as to limit the horizontal direction of the second relief valve 60, for example, in the example shown in fig. 11, the plurality of limiting ribs 13 may be symmetrically arranged at the circumferential edge of the second relief valve 60 to improve the reliability of limiting the second relief valve 60.

As shown in fig. 11, in a further example of the present invention, in order to facilitate the assembly of the second relief valve 60, the lid assembly 10 is provided with the inclined plane rib 14, the inclined plane rib 14 has the guiding surface 141 and the abutting surface 142, the guiding surface 141 extends downward along the horizontal direction, the abutting surface 142 extends downward along the vertical direction, the guiding surface 141 through the inclined plane rib 14 can facilitate the user to assemble the second relief valve 60, and the abutting surface 142 is utilized to cooperate with the limiting rib 13 for limiting.

As shown in fig. 11, in a further example of the present invention, the lid assembly 10 has an elastic buckle 15, the elastic buckle 15 extends along a vertical direction and has a hook portion 151 at an upper end, and the hook portion 151 faces a top surface of the second pressure release valve 60, so as to cooperate with the lid assembly 10 to limit the second pressure release valve 60 in a vertical direction.

Meanwhile, in order to facilitate air circulation and improve heat dissipation performance, the pot cover assembly 10 is further provided with a supporting rib 16, the second pressure release valve 60 is arranged on the supporting rib 16 to separate the second pressure release valve 60 from the pot cover assembly 10, so that the contact area between the second pressure release valve 60 and the pot cover assembly 10 is reduced, and further, the heat is transmitted to the second pressure release valve 60 through the pot cover assembly 10, and the service life is prolonged.

The cooking appliance according to the embodiment of the present invention includes the pot cover assembly 100 of the cooking appliance according to the above-described embodiment. According to the utility model discloses cooking utensil makes it have characteristics such as simple structure, reliability height, quick pressure release through adopting the cooking utensil's of above-mentioned embodiment pot cover assembly 100.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

Other constructions and operations of the pot cover assembly 100 of the cooking appliance and the cooking appliance having the same according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (19)

1. A lid assembly for a cooking appliance, comprising:

a lid assembly having an air vent adapted to communicate with a cooking cavity of the cooking appliance;

the first pressure relief valve is arranged on the pot cover assembly and comprises a valve body and a valve rod, the valve body is provided with a first pressure relief channel, an inlet of the first pressure relief channel is communicated with the atmosphere, an outlet of the first pressure relief channel is communicated with the vent hole, and the valve rod moves between a position where the inlet and the outlet are communicated and a position where the inlet and the outlet are disconnected;

the transmission piece is rotatably arranged on the pot cover component and is connected with the valve rod to drive the valve rod to move;

and the cover opening assembly is connected with the transmission piece and drives the transmission piece to rotate so as to drive the valve rod to move.

2. The pot cover assembly of the cooking appliance according to claim 1, wherein one end of the valve rod is arranged in the first pressure relief channel and is used for opening and closing the outlet so as to realize the on-off between the inlet and the outlet.

3. The lid assembly of a cooking appliance as claimed in claim 2, wherein an inner wall surface of the first pressure release passage is provided with an inner collar surrounding the outlet, and one end of the valve stem is provided with a first sealing member which abuts against the inner collar in a state where the valve stem closes the outlet.

4. The pot cover assembly of the cooking appliance according to claim 1, wherein the first pressure relief valve further comprises a pull tab and a connecting rod, the connecting rod is connected between the pull tab and the valve rod, the cross-sectional area of the connecting rod is smaller than the cross-sectional area of the valve rod and the cross-sectional area of the pull tab, and the transmission member is connected with the valve rod through cooperation with the connecting rod.

5. The lid assembly of cooking utensil of claim 1, wherein the first pressure relief valve further comprises a reset member, the reset member is sleeved on the valve rod, and two ends of the reset member are respectively abutted against the valve rod and the valve body to normally push the valve rod to close the outlet.

6. The pot cover assembly of the cooking appliance according to claim 5, wherein the valve stem is disposed in the valve body, a lateral peripheral wall of the valve stem is provided with a convex supporting edge, and the reset member abuts between the supporting edge and an inner wall of the valve body.

7. The lid assembly of a cooking appliance of claim 1, wherein the valve body comprises:

a valve seat provided to the lid assembly and having a guide passage extending along a center line of the outlet, the valve stem being movable along the guide passage;

the valve cover is arranged at the top of the valve seat and defines the first pressure relief channel together with the valve seat, and the outlet is arranged on the valve cover.

8. The pot cover assembly of the cooking appliance as claimed in claim 7, wherein the inlet is formed in a side peripheral wall of the pot cover, the diameter of the inlet is d, and d is greater than or equal to 1mm and less than or equal to 2 mm.

9. The pot cover assembly of the cooking appliance according to claim 7, wherein the inlet comprises a plurality of inlets, the sum of cross-sectional areas of the plurality of inlets is s, and s is larger than or equal to 3.14mm²。

10. The cover assembly of a cooking appliance as claimed in claim 7, wherein the cover assembly has a cover fixing buckle extending upward in a vertical direction, and the valve seat is provided with at least two valve seat fixing buckles engaged with the cover fixing buckle.

11. The lid assembly of a cooking appliance of claim 10, wherein the valve seat retainer button comprises:

one end of the first straight section is connected with the valve seat, and the other end of the first straight section extends upwards along the vertical direction;

one end of the bending section is connected with the other end of the first straight section;

the second straight section and the first straight section are arranged at intervals, one end of the second straight section is connected with the other end of the bent section, and the other end of the second straight section forms a valve seat clamping part which is suitable for being clamped with the pot cover fixing buckle.

12. The pot cover assembly of the cooking appliance according to claim 7, wherein the peripheral wall of the valve cover is provided with at least two spaced apart valve cover fixing fasteners, the valve seat is provided with at least two spaced apart valve seat fixing holes, and the at least two valve cover fixing fasteners are engaged with the at least two valve seat fixing holes in a one-to-one correspondence manner.

13. The lid assembly of a cooking appliance as claimed in claim 1, wherein the lid assembly is provided with a support base, the transmission member is formed in a rod shape, the transmission member is rotatably provided at the support base, one end of the transmission member is connected to the valve rod, and the other end of the transmission member is connected to the lid opening assembly.

14. The lid assembly of claim 1, wherein the lid assembly has a suction hole adapted to communicate with the cooking cavity, and a suction device is disposed in the lid assembly and connected to the suction hole for generating a negative pressure in the cooking cavity.

15. The lid assembly of claim 14, wherein the air hole and the vent hole are the same air hole and the air hole is switchably communicated with the outlet of the first pressure release channel and the air suction device; or the air suction hole and the air vent are two air holes which are independent mutually.

16. The pot cover assembly of the cooking appliance of claim 14, further comprising:

a one-way valve disposed between the extraction aperture and the extraction device, the one-way valve configured to be one-way only when airflow is flowing from the extraction aperture to the extraction device.

17. The pot cover assembly of the cooking appliance as claimed in claim 16, wherein the check valve has a valve chamber and a valve core, an air inlet of the valve chamber is communicated with the air suction hole, an air outlet of the valve chamber is communicated with the air suction device, and the valve core moves between a position of communicating the air inlet and the air outlet and a position of disconnecting the air inlet and the air outlet.

18. The pot cover assembly of the cooking appliance as claimed in claim 17, wherein the valve core is disposed in the valve cavity for opening and closing the air inlet hole to open and close the air inlet hole and the air outlet hole,

the valve core is sleeved with an elastic piece, and two ends of the elastic piece are respectively abutted against the valve core and the inner wall of the valve cavity far away from the air inlet hole so as to normally push the valve core to close the air inlet hole.

19. A cooking appliance comprising the pot cover assembly of the cooking appliance of any one of claims 1-18.

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