Valve assembly, cover assembly and cooking device

Abstract

The present invention provides a valve assembly, a cover assembly and a cooking device. The valve assembly includes: a valve body provided with an air extraction port and a ventilation port, an air outlet interface communicated with the air extraction port is arranged on the valve body, and a channel connected to the air extraction port and the ventilation port is formed in the valve body; a first valve core, which cooperates with the valve body and controls the on-off of the channel, so that the air extraction port and the ventilation port are conducted or cut off along the channel. The valve assembly provided by this solution, while meeting the requirements of air flow guiding and switching for air extraction and intake in the cooking cavity, the cooking device only needs to set one installation port for assembling with the valve body to realize the conduction between the air extraction port and the cooking cavity. Compared with the structure in the related art where at least an air extraction assembly port and an air intake assembly port need to be set on the cooking device, the number of openings is reduced, which is more conducive to simplifying the structure of the cooking device components, simplifying the assembly process of the product, and better ensuring the strength of the cooking device components, and simultaneously achieving the improvement of product quality and the reduction of product cost.

Description

Technical Field

[0001] The present invention relates to the field of cooking appliances, and more particularly, to a valve assembly, a lid assembly, and a cooking appliance. Background Art

[0002] In order to achieve more diverse usage functions, existing cooking appliances such as electric pressure cookers need to be provided with at least an air extraction assembly port and an air inlet assembly port on the cover plate or the pot lid. The large number of openings on the cover plate or the pot lid makes the structure of the cover plate or the pot lid extremely complex and affects the strength of the cover plate or the pot lid. Summary of the Invention

[0003] In order to solve at least one of the above technical problems, an object of the first aspect of the present invention is to provide a valve assembly.

[0004] Another object of the present invention is to provide a lid assembly having the above valve assembly.

[0005] Still another object of the present invention is to provide a cooking appliance having the above lid assembly.

[0006] To achieve the above object, an embodiment of the first aspect of the present invention provides a valve assembly, including: a valve body, the valve body is provided with an air extraction port and a ventilation port, an air outlet interface communicated with the air extraction port is arranged on the valve body, and a channel communicated with the air extraction port and the ventilation port is formed in the valve body; a first valve core, cooperating with the valve body and controlling the on-off of the channel, so that the air extraction port and the ventilation port are conducted or cut off along the channel.

[0007] The valve assembly provided in the above embodiments of the present invention has an air extraction port, an air vent, and an air outlet interface on the valve body. The air extraction port is configured to communicate with the cooking cavity of the cooking device, the air outlet interface is for the air extraction device to extract air, and the air vent is configured to communicate with the outside. In this way, when it is necessary to extract air from the cooking cavity, the first valve core can be used to control the disconnection between the air vent and the air extraction port, and the air extraction device operates to extract the gas in the cooking cavity through the air extraction port and then along the air outlet interface. When it is necessary to introduce air into the cooking cavity to relieve pressure, the first valve core can be used to control the communication between the air vent and the air extraction port. In this way, the gas enters the valve body along the air vent, and the gas entering the valve body enters the cooking cavity along the air extraction port, realizing the air intake and pressure relief of the cooking cavity (of course, in some cases, it can also be understood conversely that the cooking cavity exhausts air outward along the air extraction port and the air vent to realize the exhaust and pressure relief of the cooking cavity). Generally speaking, with this structure, while satisfying the air flow guidance and switching for air extraction and air intake of the cooking cavity, the cooking device only needs to set one installation port for assembling with the valve body to realize the conduction between the air extraction port and the cooking cavity. Compared with the structure in the related art where at least an air extraction assembly port and an air intake assembly port need to be set on the cooking device, the number of openings is reduced, which is more conducive to simplifying the structure of the cooking device components (such as the pot lid or cover plate of the cooking device, etc.), while simplifying the product assembly process, and better ensuring the strength of the cooking device components, and comprehensively realizing the improvement of product quality and the reduction of product cost.

[0008] In addition, the valve assembly in the above embodiments provided by the present invention may further have the following additional technical features:

[0009] In the above technical solution, the valve assembly further includes: a detection element, and the detection element has a detection part; the valve body has an air extraction head, and the detection part and the air extraction port are arranged on the air extraction head.

[0010] In this solution, a detection element is arranged on the valve body, and the detection part of the detection element and the air extraction port are both arranged on the air extraction head. In this way, by assembling the air extraction head with the cooking device, it not only realizes the communication between the air extraction port and the cooking cavity, thus satisfying the air flow guidance and switching functions for air extraction and air intake of the cooking cavity, but also realizes the detection of working condition parameters such as temperature, air pressure, and / or humidity in the cooking cavity by the detection part. And by using this structure, the cooking device only needs to set one installation port for assembling with the valve body to realize the conduction between the air extraction port and the cooking cavity. Compared with the structure in the related art where at least an air extraction assembly port, an air intake assembly port, and a detection assembly port need to be set on the cooking device, the number of openings is reduced, which is more conducive to simplifying the structure of the cooking device components, while simplifying the product assembly process, and better ensuring the strength of the cooking device components, and comprehensively realizing the improvement of product quality and the reduction of product cost.

[0011] In any of the above technical solutions, a part of the detection element is received in the air extraction head. The air extraction head is provided with a first opening, and the detection part passes through the first opening and extends out of the air extraction head from the first opening. Wherein, an air extraction port is arranged at a position around the first opening on the air extraction head, and / or the first opening is formed as the air extraction port and a first gap is formed between the first opening and the detection part.

[0012] In this solution, a part of the detection element is arranged to be received in the air extraction head. In this way, the overall integration degree of the valve assembly is higher. The detection element and the air extraction head can be assembled with the components of the cooking device (such as the cover body, the cover plate, etc.) through one installation, and the installation is more convenient. At the same time, it is more conducive to protecting the detection element during the assembly of the air extraction head and the components of the cooking device, reducing the risk of damage to the detection element during assembly.

[0013] Among them, by arranging the detection part to extend out of the air extraction head from the first opening, it is beneficial for the detection part to extend into the cooking cavity for detection. In this way, the detection of the working condition parameters in the cooking cavity by the detection element can be more real and accurate. And by arranging the air extraction port at a position around the first opening, and / or making the first opening be formed as the air extraction port and a first gap be formed between the first opening and the detection part, the air intake smoothness of the air extraction port is ensured, and at the same time, the distribution positions of the air extraction port and the detection part are approximately close. In this way, when the air extraction head is assembled with the components of the cooking device, it does not need to extend out too much length, which can reduce the risk of the air extraction head being collided or blocked by substances such as food in the pot.

[0014] In any of the above technical solutions, a cavity is formed inside the air extraction head. A part of the detection element is received in the cavity and a second gap is formed between the detection element and the inner wall of the cavity. The second gap is formed as a part of the channel and is communicated with the air extraction port.

[0015] In this solution, a second gap is formed between the detection element and the inner wall of the air extraction head, and the second gap is formed as a part of the channel for communicating the ventilation port and the air extraction port. In this way, while meeting the purpose of air flow conduction, this structure not only improves the integration degree of the internal structure of the air extraction head, that is, there is no need to design a separate channel structure and a receiving space for the detection element inside the air extraction head, so that the volume of the air extraction head can be made smaller, but also reduces the contact area between the detection element and the valve body, reduces the interference to the operation of the detection element, and improves the detection accuracy.

[0016] In any of the above technical solutions, the first valve core is constructed with an on-off action part and an opening and closing cover linkage part that are connected to each other, the on-off action part moves with the opening and closing cover linkage part, the movement of the opening and closing cover linkage part has an open cover position and a closed cover position, the opening and closing cover linkage part enables the on-off action part to control the passage to be connected in the open cover position, and enables the opening and closing cover linkage part to control the passage to be disconnected in the closed cover position.

[0017] In this solution, the on-off action part is a part of the first valve core that is suitable for controlling the conduction or cutoff of the channel, and the opening and closing cover linkage part is a part of the first valve core that is suitable for cooperating with the opening and closing cover action part (for example, the opening and closing cover action part may include one or more of the opening and closing cover button / opening cover handle / opening cover push plate, linkage slider, opening cover motor, and opening cover electromagnetic push rod). When the cover assembly is opened, the opening and closing cover action part drives the lock to unlock, and at the same time drives the opening and closing cover linkage part to the opening position, so that the opening and closing cover linkage part is linked to the on-off action part, so that the on-off action part controls the conduction of the channel to allow the cooking cavity to take in or exhaust air along the vent, thereby preventing the danger of opening the cover or the problem of pot suction when the cooking cavity is under pressure. Generally speaking, the opening operation can simultaneously control the unlocking of the lock and the pressure relief of the cooking cavity, realize one-button opening, ensure the safety of opening the cover, and prevent the pot from being sucked when the cover is opened.

[0018] In any of the above technical solutions, the valve body is provided with a connecting hole, which is connected to the air suction port and forms a part of the channel, wherein the first valve core is movably connected to the valve body and has a first position and a second position relative to the movement of the valve body, the first valve core seals the connecting hole in the first position so that the channel is disconnected, and opens the connecting hole in the second position so that the channel is connected.

[0019] In the present solution, a first valve core is provided to control the connection or disconnection between the vent and the exhaust port by moving to open the connecting hole or seal the connecting hole. The structure is simple and the cost is low. It is also more conducive to the linkage setting between the first valve core and the opening and closing cover actuating member, and has the advantages of precise and reliable control.

[0020] In any of the above technical solutions, the valve assembly also includes: an elastic return member, which cooperates with the first valve core, wherein the first valve core compresses the elastic return member in the second position, and the elastic return member elastically recovers to drive the first valve core to move toward the first position.

[0021] In this solution, an elastic resetting member is provided. When the first valve core is in the second position, the control passage of the first valve core is opened to achieve the pressure relief function, and the first valve core compresses the elastic resetting member so that the elastic resetting member compresses and stores energy. When the elastic resetting member elastically returns to release energy, the elastic restoring force of the elastic resetting member is used to drive the first valve core to the first position to automatically cut off the passage, so that better airtightness of the cooking cavity can be achieved, and the cooking effect in the cooking cavity can be better guaranteed.

[0022] In any of the above technical solutions, the first valve core is provided with a first sealing member. When the first valve core is in the first position, the first sealing member blocks the communication hole and abuts against the part around the communication hole. When the first valve core is in the second position, the first sealing member is separated from the communication hole.

[0023] In this solution, a first sealing member is arranged on the first valve core, so that the first valve core seals the communication hole through the first sealing member. In this way, the cut-off effect on the passage is more reliable, and better airtightness of the cooking cavity can be achieved under non-intake and non-exhaust working conditions, and the cooking effect in the cooking cavity can be better guaranteed.

[0024] In any of the above technical solutions, a first valve cavity is formed in the valve body. The first sealing member is located in the first valve cavity and divides the first valve cavity into a first area and a second area. The communication hole and the ventilation port are distributed in the first area, and at least part of the first valve core extends into the second area and is connected to the first sealing member.

[0025] In this solution, the first valve cavity is divided into a first area and a second area by the first sealing member. The communication hole and the ventilation port are arranged in the first area. The first valve core extends into the second area and cooperates with the first sealing member. The on-off control of the communication hole by the first valve core is reliable. In this structure, when the communication hole is opened, it is conducted to the ventilation port through the first area. When the communication hole is sealed, it is disconnected from the first area and then from the ventilation port, and gas will not leak into the second area. In this way, gas leakage into the cover of the cooking device can be avoided, the cleanliness inside the cover can be guaranteed, and for the case where the first valve core is driven by components such as an electric driving member or a linkage slider, it can well prevent components such as an electric driving member or a linkage slider from contacting water vapor, improve the working environment of components such as an electric driving member or a linkage slider, reduce the failure rate and delay the aging phenomenon.

[0026] In any of the above technical solutions, the valve body has a main body portion and a cover body. The main body portion is connected to the cover body and encloses the first valve cavity, and part of the first sealing member is clamped by the main body portion and the cover body.

[0027] In this solution, a first valve cavity is formed by enclosing it with the main body part and the cover body, and part of the first seal is clamped by the main body part and the cover body. In this way, the assembly stability of the first seal is achieved, the division between the first area and the second area is made more reliable, so that the communication hole and the ventilation port can be conducted more efficiently and the anti-leakage effect at the first area is improved. At the same time, the assembly of the first seal and the first valve cavity is made simpler and easier, simplifying the assembly operation of the product.

[0028] In any of the above technical solutions, the first seal includes a sealing part, a deformable part and a connecting part. The deformable part connects the sealing part and the connecting part. The connecting part is connected to the valve body. The sealing part is connected to the first valve core and is adapted to seal or open the communication hole. The movement of the first valve core causes the sealing part to move relative to the connecting part; or the first valve core is configured with a connecting head, and the first seal is sleeved on the connecting head and moves with the first valve core.

[0029] In this solution, the first seal is connected to the valve body through the connecting part, thus realizing the stable assembly of the first seal. In this way, the first seal can form a reliable seal to prevent water vapor leakage. The first seal is connected to the first valve core through the sealing part, so that the first valve core can drive the sealing part to seal or open the communication hole. Among them, the deformable part is designed to connect the sealing part and the connecting part. In this way, during the movement of the sealing part with the first valve core, the deformable part deforms to adapt to the position change between the sealing part and the connecting part, thereby reducing the pulling force on the connecting part and improving the assembly reliability of the position of the connecting part.

[0030] By sleeving the first seal on the connecting head to make the first seal move with the first valve core, while achieving a reliable seal of the communication hole, the assembly of the first seal is made simpler and more convenient.

[0031] In any of the above technical solutions, a second valve cavity is formed in the valve body. The first valve core is configured with a piston part adapted to the second valve cavity. The piston part is located in the second valve cavity and is movable along the second valve cavity. Among them, a third area is formed by enclosing the inner wall of the second valve cavity and the piston part. The communication hole and the ventilation port are distributed in the third area.

[0032] In this solution, the piston part is arranged in the second valve cavity and adapted to the second valve cavity and moves along the second valve cavity. On the one hand, the second valve cavity can play a guiding role, making the movement of the first valve core more precise, so as to more precisely control the opening and closing of the communication hole. On the other hand, when the communication hole is open, it is conducted to the ventilation port via the third area. When the communication hole is sealed, it is disconnected from the third area and then from the ventilation port. The piston part can be used to limit the leakage of gas outside the third area, thus avoiding the leakage of gas into the interior of the cover of the cooking device, ensuring the cleanliness and hygiene of the interior of the cover. And for the case where the first valve core is driven by components such as an electric driving part or a linkage slider, it can well prevent components such as the electric driving part or the linkage slider from contacting water vapor, improve the working environment of components such as the electric driving part or the linkage slider, reduce the failure rate and delay the aging phenomenon.

[0033] In any of the above technical solutions, the valve body has a main body part, a third valve cavity communicating with the air extraction port is formed inside the main body part, and an air outlet interface communicating with the third valve cavity is provided on the main body part. Among them, a communication hole communicating with the third valve cavity is provided on the main body part; or an assembly structure is provided on the main body part, a mating body is assembled on the assembly structure, the mating body is provided with the communication hole and the communication hole communicates with the third valve cavity.

[0034] In any of the above technical solutions, the valve assembly has a bracket, at least a first installation position and a second installation position are formed on the bracket, the main body part is installed at the first installation position, and the mating body on the main body part is installed at the second installation position; a bracket is provided below the main body part, and a gland is provided above. The gland is connected to the bracket and locks the main body part between the gland and the bracket; and / or the assembly structure includes one of a receiving part and an insertion part, and the mating body on the main body part is provided with the other of the receiving part and the insertion part, and the insertion part is embedded in the receiving part; and / or a second opening is provided on the main body part, a detection element is partially accommodated in the third valve cavity and extends out from the second opening. Among them, a second sealing member is provided on the main body part and the second sealing member seals the gap between the second opening and the detection element, or a contact sealing convex part is constructed on the main body part and at least the contact sealing convex part of the main body part is a sealing material body, and the contact sealing convex part is in contact with the detection element to form a sealing fit.

[0035] In this solution, by correspondingly assembling the main body part and the mating body using the first installation position and the second installation position, the bracket can be used to assemble and position the main body part and the mating body to realize the assembly reinforcement between the main body part and the mating body, prevent loosening and displacement between the main body part and the mating body, and improve the assembly reliability and quality of the product.

[0036] Place the main body on the bracket, and install the cover assembly of the main body on the gland. By connecting the gland to the bracket to lock the main body between the gland and the bracket, the main body can be strengthened and shaped, improving the strength of the main body during use and enhancing the assembly reliability between the main body and the mating body and / or the on-off control component. For example, the main body can be made of sealing materials such as silica gel, rubber, or plastic. Accommodating parts are respectively provided on the main body corresponding to components such as the on-off control component and the mating body. The insertion tube structures of components such as the on-off control component and the mating body are directly inserted into the accommodating parts to achieve sealed connection. For the main body made of sealing material, locking the main body by the bracket and the gland shapes and strengthens the main body, maintains the stability of the third valve cavity inside the main body, and improves the insertion stability and reliability of the insertion tube structures of the accommodating parts and components such as the on-off control component and the mating body.

[0037] The assembly structure of the main body is provided with either an accommodating part or an insertion part (such as an insertion tube structure). The mating body on the main body is provided with the other of the accommodating part and the insertion part. The insertion part is embedded in the accommodating part, which has the advantages of simple structure, easy processing and manufacturing, and simple and convenient assembly operation.

[0038] A second opening is provided on the main body, and the detection element extends out from the second opening. This facilitates the detection element to extend out for electrical connection assembly. And by making the detection element extend out for electrical connection, it is more conducive to improving the working environment of the electrical connection part of the detection element and enhancing the electrical installation performance of the detection element. Among them, a second seal is used to seal the mating position between the detection element and the second opening, or a sealing convex part made of sealing material is constructed on the main body to abut and seal against the detection element, which can prevent water vapor from leaking and contacting the electrical connection position of the detection element, making the product more reliable and safe to use.

[0039] In any of the above technical solutions, the valve assembly further has an on-off control component, and the on-off control component is connected to the air outlet interface and controls the on-off of the air outlet interface.

[0040] In this solution, an on-off control component is provided to control the on-off of the air outlet interface. When no air extraction is required, the on-off control component can be used to control the air outlet interface to close, which is more conducive to maintaining pressure in the cooking cavity and can prevent high or low pressure in the cooking cavity from damaging the air extraction device. When air extraction is required, the on-off control component is used to control the air outlet interface to open, which is simple and convenient to use. And this design sets the on-off control component to be connected to the air outlet interface, which further realizes the multi-functionality and integration of the valve assembly. In this way, the modularization degree of the cooking equipment parts is higher, and it is more convenient for product assembly.

[0041] In any of the above technical solutions, the on-off control component has a second valve core. The air outlet interface includes a groove body and a first hole and a second hole formed on the wall of the groove body. The on-off control component covers the groove body and the second valve core extends into the groove body to close or open the first hole so as to cut off or ventilate the second hole.

[0042] In this solution, it is provided that the on-off control component includes a plugging member. When the plugging member plugs the first hole, the air outlet interface is disconnected. In this way, the cooking cavity will not leak or suck air along the air outlet interface, which is more conducive to maintaining pressure in the cooking cavity and can better protect the positive and negative pressures of the air extraction device. When the plugging member opens the first hole, the first hole and the second hole are conducted, and then the second hole and the air suction port are conducted. The air extraction device can extract the gas in the cooking cavity from the second hole to realize the air extraction function. This structure has the advantages of high integration of the valve assembly, simple structure and low cost.

[0043] In any of the above technical solutions, the on-off control component is a control valve. The control valve has an inlet and an outlet, and the control valve is configured to control the conduction or cut-off between the inlet and the outlet through the inside of the control valve. Among them, the inlet is communicated with the air outlet interface.

[0044] In this solution, it is provided that the on-off control component is a control valve component with an inlet and an outlet, and the inlet is connected to the air outlet interface for assembly, which has the advantages of simple structure and convenient installation.

[0045] In any of the above technical solutions, the air extraction port is located in the middle area of the valve body, and the air extraction head of the valve body extends longitudinally towards the valve body; the on-off control component and the first valve core are located on opposite sides of the valve body and are arranged horizontally along the valve body.

[0046] In this solution, it is provided that the on-off control component and the first valve core are correspondingly distributed on opposite sides of the valve body, and the air extraction port is located in the middle area of the valve body and the air extraction head extends longitudinally along the valve body. In this way, the overall valve assembly is roughly in a T shape. The on-off control component and the first valve core roughly form the two horizontal sides of the T shape, and the air extraction head roughly forms the bottom side of the T shape. In this way, the assembly fit between the valve assembly and the cover body can be better, and the form of assembling the air extraction head downward into the pot lid, with the on-off control component and the first valve core located outside the pot lid and arranged roughly horizontally, can make the assembled structure more space-saving and reduce the volume, and is also conducive to the stable assembly of the valve assembly.

[0047] An embodiment of the second aspect of the present invention provides a cover body assembly, including: a cover body, and an installation port is provided on the cover body; the valve assembly in any of the above technical solutions, and the valve body of the valve assembly is connected to the installation port and assembled on the cover body.

[0048] The cover assembly provided in the above embodiment of the present invention has all the above beneficial effects by being provided with the valve assembly described in any of the above technical solutions, which will not be described in detail here.

[0049] In any of the above technical solutions, the cover body assembly has a lock and an opening and closing cover actuating member, and the opening and closing cover actuating member has a locking position for locking the lock and an unlocking position for unlocking the lock, wherein the opening and closing cover actuating member cooperates with the first valve core of the valve assembly and is suitable for triggering the first valve core at the unlocking position so that the first valve core controls the channel conduction of the valve assembly; the opening and closing cover actuating member includes at least one of a linkage slider and an electric drive member.

[0050] In this solution, a cover opening and closing action member is provided (for example, the cover opening and closing action member may include one or more of a cover opening button / cover opening handle / cover opening push plate, a linkage slider, a cover opening motor, and a cover opening electromagnetic push rod). The cover opening and closing action member is used to drive the lock, and when the cover opening and closing action member is in the locking position, the lock is locked with the cooking pot, so that the cover assembly and the cooking pot are locked, and when the cover opening and closing action member is in the unlocking position, the lock is unlocked from the cooking pot, so that the user can open the cover assembly to take out the food in the cooking cavity. Among them, the cover opening and closing action member is arranged in linkage with the first valve core, and the cover opening and closing action member drives the first valve core in the unlocking position, so that the first valve core controls the passage of the valve assembly to be connected, so that the cooking cavity can be depressurized by air intake or exhaust along the vent. In this way, the cover opening operation can simultaneously control the lock unlocking and the cooking cavity depressurization, so as to realize one-button cover opening, ensure the safety of cover opening, and prevent the cover from sucking the pot.

[0051] The opening and closing cover action member is provided with a linkage slider, so that when the user operates the handle so that the handle drives the lock to be unlocked via the linkage slider, the linkage slider simultaneously acts on the opening and closing cover linkage part to drive the first valve core, so that the first valve core control channel is conductive, and through this mechanical linkage process, one-button opening and pressure relief operations are realized, and the one-button control has higher accuracy, anti-interference and energy saving, making the one-button control of opening the cover and pressure relief functions more reliable.

[0052] The opening and closing cover action member includes an electric drive member, and the electric drive member is used to control the action of the first valve core. In this way, the user can perform one-key operation more labor-savingly, further improving the comfort of product use.

[0053] In any of the above technical solutions, the cover body assembly also has an exhaust device, which is connected to the valve assembly and extracts air from the air outlet interface of the valve assembly; and / or the air vent of the valve assembly is connected to the outside, or the cover body assembly also has an air inlet valve and the air inlet valve is connected to the air vent of the valve assembly.

[0054] In this solution, an air extraction device is provided in the lid assembly, and the air extraction device extracts air from the air outlet interface position of the valve assembly, realizing the integration of the air extraction device and the valve assembly in the lid assembly, which is more convenient for product assembly and pipeline routing. Moreover, by using the air extraction device, the cooking cavity formed without the lid assembly covering can have a negative pressure function through air extraction, further enriching the cooking forms of the product and better meeting the different usage needs of users.

[0055] An air vent is provided to communicate directly with the outside. While satisfying the cooking cavity device to inhale air from the outside or exhaust air to the outside through the air vent, it has the advantages of simple structure and low cost.

[0056] The air vent is provided to communicate with the intake valve of the lid assembly. In this way, while satisfying the intake valve to open to realize the communication between the air vent and the outside for the cooking cavity to intake or exhaust air, the air intake of the air vent can be smoother and more stable, and it is also beneficial to the cleaning and dust prevention of the air vent position.

[0057] An embodiment of the third aspect of the present invention provides a cooking device, including: a cooking pot; the lid assembly described in any of the above technical solutions, covering the cooking pot and enclosing a cooking cavity with the cooking pot, and the air extraction port of the valve assembly of the lid assembly communicates with the cooking cavity.

[0058] The cooking device provided by the above embodiment of the present invention has all the above beneficial effects by being provided with the lid assembly described in any of the above technical solutions, and will not be elaborated here.

[0059] The additional aspects and advantages of the present invention will become apparent in the following description section, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The above and / or additional aspects and advantages of the present invention will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, where:

[0061] Figure 1 is a top view structural schematic diagram of the valve assembly according to an embodiment of the present invention;

[0062] Figure 2 is Figure 1 a cross-sectional structural schematic diagram of the valve assembly shown in

[0063] Figure 3 is a top view structural schematic diagram of the lid assembly according to an embodiment of the present invention;

[0064] Figure 4 is a top view structural schematic diagram of the lid assembly under the fifth working condition according to an embodiment of the present invention;

[0065] Figure 5 is Figure 4The top view structural schematic diagram of the cover assembly under the sixth working condition as shown in

[0066] Figure 6 is the sectional view structural schematic diagram of the cooking device according to an embodiment of the present invention under the seventh working condition;

[0067] Figure 7 is Figure 6 the enlarged structural schematic diagram of part C as shown in

[0068] Figure 8 is Figure 6 the top view structural schematic diagram of the cooking device according to an embodiment of the present invention under the eighth working condition;

[0069] Figure 9 is Figure 8 the enlarged structural schematic diagram of part D as shown in

[0070] Figure 10 is the top view structural schematic diagram of the valve assembly according to an embodiment of the present invention;

[0071] Figure 11 is Figure 10 the sectional view structural schematic diagram of the valve assembly as shown in

[0072] Figure 12 is the top view structural schematic diagram of the cover assembly according to an embodiment of the present invention;

[0073] Figure 13 is the top view structural schematic diagram of the cover assembly according to an embodiment of the present invention under the ninth working condition;

[0074] Figure 14 is Figure 13 the top view structural schematic diagram of the cover assembly under the tenth working condition as shown in

[0075] Figure 15 is the sectional view structural schematic diagram of the cooking device according to an embodiment of the present invention under the eleventh working condition;

[0076] Figure 16 is Figure 15 the enlarged structural schematic diagram of part E as shown in

[0077] Figure 17 is Figure 15 the top view structural schematic diagram of the cooking device according to an embodiment of the present invention under the twelfth working condition;

[0078] Figure 18 is Figure 17 the enlarged structural schematic diagram of part F as shown in

[0079] Among them, Figures 1 to 18 the corresponding relationship between the reference numerals and the component names in

[0080] 10-2 valve assembly, 10-3 valve assembly, 20-2 cover body, 20-3 cover body, 21 inner cover, 22 cover plate, 22a mounting opening, 23 locking buckle, 24 linkage slider, 24a slider body, 24b lever, 24c guide block, 25 air extraction device, 25a first pipe, 25b air pump, 25c second pipe, 26 intake valve, 27 handle, 28 connecting pipe, 30 cooking pot, 40 pot body; 100 valve body, 111 air extraction port, 112 ventilation port, 113 air outlet interface, 1131 second socket, 1132 first hole, 1133 second hole, 1134 groove body, 120 channel, 130 air extraction head, 131 first opening, 132 first gap, 134 second gap, 140 communication hole, 150 cover body, 151 first valve cavity, 1511 first region, 1512 second region, 160 mating body, 161 second valve cavity, 1611 third region, 170 main body portion, 171 third valve cavity, 172 assembly structure, 173 second opening, 174 abutting sealing convex portion, 200 first valve core, 210 on-off action portion, 220 opening and closing cover linkage portion, 230 connecting head, 240 piston portion, 300 detection element, 310 detection portion, 320 connecting plate, 400 elastic reset member, 500 first seal, 510 sealing portion, 520 deformable portion, 530 connecting portion, 600 second seal, 700 bracket, 710 first mounting position, 720 second mounting position, 730 third mounting position, 740 avoidance hole, 751 positioning groove, 752 buckle, 800 on-off control component, 810 inlet, 820 outlet, 830 second valve core, 900 gland, 910 lug. Detailed implementation manners

[0081] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0082] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0083] The following refers to Figures 1 to 18 Describe the valve assembly, cover body assembly and cooking device according to some embodiments of the present invention.

[0084] An embodiment of the first aspect of the present invention provides a valve assembly. The valve assembly can be used in a cooking device having a cooking cavity or a component (such as a cover body assembly) of the cooking device. As Figure 1 , Figure 10 shown, the valve assembly (specifically, reference can be made to the attached Figure 2the valve assembly 10-2 shown in Figure 11 and the valve assembly 10-3 shown in

[0085] Specifically, as Figure 2 、 Figure 11 shown, the valve body 100 is provided with an air extraction port 111 and an air vent 112. An air outlet interface 113 communicating with the air extraction port 111 is provided on the valve body 100. A channel 120 connecting the air extraction port 111 and the air vent 112 is formed inside the valve body 100. Among them, the air extraction port 111 is configured to communicate with the cooking cavity, and the air outlet interface 113 is configured to be connected to the air extraction device 25 or connected to the air extraction device 25 in the middle. For this middle connection, specifically, by way of example, the air extraction device 25 and the air outlet interface 113 are connected through a control valve, so that a middle connection is formed between the air extraction device 25 and the air outlet interface 113 through this control valve. The air vent 112 is used for communicating with the outside world, and this communication can be macroscopically understood as direct communication or middle communication. For example, the air vent 112 is directly opened to communicate with the outside world, or, for example, the air vent 112 is connected to components such as the intake valve 26, and these components such as the intake valve 26 conduct the air vent 112 to communicate with the outside world.

[0086] Among them, as Figure 2 、 Figure 11 shown, the first valve core 200 cooperates with the valve body 100 and controls the on / off of the channel 120, so that the air extraction port 111 and the air vent 112 are conducted or cut off along the channel 120.

[0087] For the valve assembly provided in the above embodiment of the present invention, as Figure 7 、 Figure 16 shown, when it is necessary to extract air from the cooking cavity, the first valve core 200 can be used to control the channel 120 to be disconnected. At this time, the air vent 112 and the air extraction port 111 are cut off (that is, not conducted), and the air extraction device 25 operates so that the gas in the cooking cavity is extracted along the air outlet interface 113 after passing through the air extraction port 111. As Figure 9 、 Figure 18As shown, when air intake and pressure relief of the cooking cavity are required, the first valve core 200 can be used to control the connection between the air vent 112 and the air extraction port 111. In this way, gas enters the valve body 100 along the air vent 112, and the gas entering the valve body 100 enters the cooking cavity along the air extraction port 111, realizing air intake and pressure relief of the cooking cavity (of course, in some embodiments, it can also be understood conversely that the cooking cavity exhausts air along the air extraction port 111 and the air vent 112 to realize exhaust and pressure relief of the cooking cavity). Generally speaking, with this structure, while meeting the air flow guiding and switching of air extraction and intake of the cooking cavity, the cooking device only needs to set one installation port for assembling with the valve body 100 to realize the conduction between the air extraction port 111 and the cooking cavity. Compared with the structure in the related art where at least an air extraction assembly port and an air intake assembly port need to be set on the cooking device, the number of openings is streamlined, which is more conducive to simplifying the structure of the cooking device components (such as the pot lid or cover plate 22 of the cooking device), while simplifying the assembly process of the product, and better ensuring the strength of the cooking device components, and simultaneously achieving the improvement of product quality and the reduction of product cost in a balanced manner.

[0088] In some embodiments, such as Figure 2 , Figure 11 As shown, the valve assembly further includes a detection element 300. The detection element 300 can be an element suitable for detecting working condition parameters such as temperature, pressure, and / or humidity. For example, the detection element 300 can be a temperature sensor, a pressure sensor, a humidity sensor, etc.

[0089] In some embodiments, such as Figure 2 , Figure 11 As shown, the detection element 300 has a detection part 310. The detection part 310 can specifically be the part of the detection element 300 that comes into contact with the object to be detected such as gas or pressure, for example, the temperature sensing probe part of the temperature sensor, the humidity probe part of the humidity sensor, the pressure sensitive part of the pressure sensor, etc.

[0090] Among them, the valve body 100 has an air extraction head 130, and the detection part 310 and the air extraction port 111 are arranged on the air extraction head 130. In this way, by assembling the air extraction head 130 with the cooking device, it not only realizes the connection between the air extraction port 111 and the cooking cavity, thus meeting the air flow guiding and switching functions of air extraction and intake of the cooking cavity, but also realizes the detection of working condition parameters such as temperature, air pressure, and / or humidity in the cooking cavity by the detection part 310. And with this structure, the cooking device only needs to set one installation port for assembling with the valve body 100 to realize the conduction between the air extraction port 111 and the cooking cavity, such as Figure 6 , Figure 15As shown, the air extraction head 130 can be passed through the installation opening 22a of the cover assembly. Compared with the structure in the related art where at least an air extraction assembly opening, an air intake assembly opening, and a detection assembly opening need to be provided on the cooking device, the number of openings is streamlined, which is more conducive to simplifying the structure of the cooking device components, simplifying the product assembly process, and better ensuring the strength of the cooking device components, and achieving the improvement of product quality and the reduction of product cost in a balanced manner.

[0091] In some embodiments, such as Figure 2 , Figure 11 As shown, the detection element 300 is partially accommodated in the air extraction head 130. In this way, the overall integration degree of the valve assembly is higher, and the detection element 300 and the air extraction head 130 can be assembled with the cooking device components (such as the inner cover, the cover plate 22, etc.) through one installation, which is more convenient for installation. At the same time, it is more conducive to protecting the detection element 300 during the assembly of the air extraction head 130 and the cooking device components, and reducing the risk of assembly damage to the detection element 300.

[0092] In some embodiments, such as Figure 2 , Figure 11 As shown, the air extraction head 130 is provided with a first opening 131, and the detection part 310 is passed through the first opening 131 and extends out of the air extraction head 130 from the first opening 131. This can facilitate the detection part 310 to extend into the cooking cavity for detection. In this way, the detection of the working condition parameters in the cooking cavity by the detection element 300 can be more real and accurate.

[0093] In some embodiments, such as Figure 2 and Figure 11 As shown, the first opening 131 is formed as an air extraction port 111, and a first gap 132 is formed between the first opening 131 and the detection part 310. In this way, both the assembly form of the detection part 310 extending out of the air extraction head 130 and the air intake function of the air extraction port 111 are realized, and the air extraction port 111 and the detection part 310 have a better position integration degree. In this way, as Figure 6 and Figure 15 As shown, only a relatively short part of the air extraction head 130 needs to pass through the installation opening 22a and extend into the cooking cavity to realize the distribution form of the air extraction port 111 communicating with the cooking cavity and the detection part 310 extending into the cooking cavity. That is, when the air extraction head 130 is assembled with the cooking device components, it does not need to extend out too much length, which can reduce the risk of the air extraction head 130 being collided or blocked by substances such as food in the pot.

[0094] In some embodiments, such as Figure 11 As shown, the air extraction port 111 is provided at a position around the first opening 131 on the air extraction head 130. This not only ensures the smoothness of air intake of the air extraction port 111, but also makes the distribution positions of the air extraction port 111 and the detection part 310 approximately close. In this way, as Figure 15As shown, when the air extraction head 130 is assembled with the cooking device component, it does not need to protrude too much in length, which can reduce the risk of the air extraction head 130 being collided or blocked by substances such as food in the pot.

[0095] In some embodiments, such as Figure 2 , Figure 11 As shown, a cavity is formed inside the air extraction head 130. The detection element 300 is partially accommodated in the cavity, and a second gap 134 is formed between the detection element 300 and the inner wall of the cavity. The second gap 134 is formed as a part of the channel 120 and is communicated with the air extraction port 111. In this way, while achieving the purpose of air flow conduction, this structure not only improves the integration degree of the internal structure of the air extraction head 130, that is, there is no need to design a separate channel 120 structure and accommodation space for the detection element 300 inside the air extraction head 130, so that the volume of the air extraction head 130 can be made smaller, but also reduces the contact area between the detection element 300 and the valve body 100, reduces the interference to the operation of the detection element 300, and improves the detection accuracy.

[0096] For example, as Figure 2 , Figure 11 As shown, the air extraction head 130 is generally formed as an elongated cylindrical body extending. The detection element 300 is generally in a columnar shape and the extending direction is generally the same as the extending direction of the air extraction head 130. More specifically, a first opening 131 is formed at one end of the air extraction head 130 along the length direction. The end of the detection element 300 along the length direction is formed as a detection part 310. The detection element 300 is inserted into the air extraction head 130 along the extending direction of the air extraction head 130. The end of the detection element 300 is formed as the detection part 310 and the detection part 310 extends out of the air extraction head 130 from the first opening 131. A second gap 134 is formed between the detection element 300 and the inner wall of the air extraction head 130. As Figure 2 As shown, the detection part 310 and the first opening 131 are in clearance fit to form a first gap 132 distributed around the detection part 310. The first gap 132 is communicated with the second gap 134. The first opening 131 is formed as the air extraction port 111, and the valve body 100 inhales or exhales air from the first gap 132. Or, as Figure 11 As shown, the part of the air extraction head 130 around the first opening 131 is provided with the air extraction port 111. The number of the air extraction ports 111 can be one or more. The detection part 310 is inserted through the first opening 131 and is in interference fit or transition fit or clearance fit with the first opening 131. Through the foregoing design, the integration of the positions of the air extraction port 111 and the detection part 310 is realized. In this way, only the end of the air extraction head 130 extending out of the detection part 310 needs to be inserted into the cooking cavity along the installation port 22a, and the structure is simple and the assembly is convenient.

[0097] In some embodiments, such as Figure 2 , Figure 11As shown, the first valve core 200 is configured with a conduction and cutoff action part 210 and an opening and closing cover linkage part 220 connected to each other. The conduction and cutoff action part 210 moves with the opening and closing cover linkage part 220. The conduction and cutoff action part 210 is the part of the first valve core 200 adapted to control the conduction or cutoff of the channel 120. The opening and closing cover linkage part 220 can move, and the movement of the opening and closing cover linkage part 220 has an open cover position and a closed cover position. When the opening and closing cover linkage part 220 is in the open cover position, the conduction and cutoff action part 210 controls the channel 120 to conduct, and when the opening and closing cover linkage part 220 is in the closed cover position, the conduction and cutoff action part 210 controls the channel 120 to disconnect.

[0098] Specifically by way of example, the opening and closing cover action member can specifically be one or more of an open cover button / open cover handle 27 / open cover push plate, a linkage slider 24, an open cover motor, and an open cover electromagnetic push rod. The opening and closing cover linkage part 220 is a component adapted to cooperate with one or more of the foregoing opening and closing cover action members, so that the first valve core 200 moves with the action of the opening and closing cover action member.

[0099] Among them, as Figure 5 、 Figure 14 shown, when the cover assembly is opened, the opening and closing cover action member drives the lock 23 to unlock. As Figure 9 、 Figure 18 shown, the opening and closing cover action member simultaneously drives the opening and closing cover linkage part 220 to the open cover position to utilize the opening and closing cover linkage part 220 to link the conduction and cutoff action part 210, so that the conduction and cutoff action part 210 controls the channel 120 to conduct for the cooking cavity to intake or exhaust air along the air vent 112, preventing danger or the problem of pot suction when the cover is opened while the cooking cavity is under pressure. Generally speaking, it realizes that the open cover operation can simultaneously control the unlocking of the lock 23 and control the pressure relief of the cooking cavity, realizes one-key opening of the cover, ensures the safety of opening the cover, and prevents pot suction during opening.

[0100] In some embodiments, as Figure 2 、 Figure 11 shown, the valve body 100 is provided with a communication hole 140. The communication hole 140 is communicated with the air extraction port 111 and forms a part of the channel 120. Among them, the first valve core 200 is movably connected to the valve body 100 and has a first position and a second position relative to the valve body 100. When the first valve core 200 is in the first position, it seals the communication hole 140 to make the channel 120 disconnect, and when in the second position, it opens the communication hole 140 to make the channel 120 conduct. The structure is simple, the cost is low, and it is also more conducive to the linkage setting between the first valve core 200 and the opening and closing cover action member, having the advantages of accurate and reliable control. Of course, this solution is not limited to this. In other embodiments, the first valve core 200 can also be designed as an electromagnetic valve. When the electromagnetic valve is opened, the communication hole 140 is opened, so that the communication hole 140 is communicated with the air vent 112. When the electromagnetic valve is closed, the communication hole 140 is closed, so that the communication hole 140 is cut off from the air vent 112.

[0101] Further, as shown in Figure 2 and Figure 11 shown, the valve assembly further includes an elastic reset member 400 (specifically, for example, a spring, rubber, elastic sheet, etc.). The elastic reset member 400 cooperates with the first valve core 200. Among them, the first valve core 200 compresses the elastic reset member 400 at the second position, and the elastic reset member 400 elastically returns to drive the first valve core 200 to move towards the first position. In this way, the first valve core 200 can be better automatically reset towards the first position under the action of the elastic restoring force, so that the cooking cavity has better airtightness and better guarantees the cooking effect in the cooking cavity.

[0102] Furthermore, as shown in Figure 2 and Figure 11 shown, the first valve core 200 is provided with a first seal 500. When the first valve core 200 is in the first position, the first seal 500 blocks the communication hole 140 and abuts against the parts around the communication hole 140. When the first valve core 200 is in the second position, the first seal 500 is separated from the communication hole 140. The cut-off effect on the channel 120 is more reliable, and better airtightness can be achieved in the cooking cavity under non-intake and non-exhaust conditions, and better guarantees the cooking effect in the cooking cavity.

[0103] In some specific embodiments, as shown in Figure 2 shown, a first valve cavity 151 is formed in the valve body 100. The first seal 500 is located in the first valve cavity 151 and divides the first valve cavity 151 into a first area 1511 and a second area 1512. The communication hole 140 and the ventilation port 112 are distributed in the first area 1511. At least part of the first valve core 200 extends into the second area 1512 and is connected to the first seal 500. The on-off control of the communication hole 140 by the first valve core 200 is reliable. In this structure, when the communication hole 140 is open, it is conducted to the ventilation port 112 through the first area 1511. When the communication hole 140 is sealed, it is disconnected from the first area 1511 and then disconnected from the ventilation port 112, and gas will not leak into the second area 1512. In this way, gas leakage into the interior of the cover of the cooking device can be avoided, ensuring the cleanliness and hygiene of the interior of the cover. And for the case where the first valve core 200 is driven by components such as an electric drive member or a linkage slider 24, it can well prevent components such as the electric drive member or the linkage slider 24 from contacting water vapor, improve the working environment of components such as the electric drive member or the linkage slider 24, reduce the failure rate and delay the aging phenomenon.

[0104] Further, as shown in Figure 2As shown, the valve body 100 has a main body portion 170 and a cover body 150. The main body portion 170 is connected to the cover body 150 and encloses a first valve cavity 151. Part of the first seal 500 is clamped by the main body portion 170 and the cover body 150. In this way, the assembly stability of the first seal 500 is achieved, making the division of the first region 1511 and the second region 1512 more reliable, so that the communication hole 140 and the vent port 112 can be conducted more efficiently and at the same time improve the anti-leakage effect at the first region 1511. Also, the assembly of the first seal 500 and the first valve cavity 151 is made simpler and easier, simplifying the assembly operation of the product.

[0105] More specifically, as Figure 2 shown, the first seal 500 includes a sealing portion 510, a deformable portion 520, and a connecting portion 530. The connecting portion 530 is connected to the valve body 100. For example, the connecting portion 530 is clamped and locked by the cover body 150 and the main body portion 170, thereby realizing the stable assembly of the first seal 500. In this way, the first seal 500 can form a good airtight separation effect and reliably realize the function of preventing water vapor leakage.

[0106] The sealing portion 510 is connected to the first valve core 200 and is adapted to seal or open the communication hole 140. The movement of the first valve core 200 causes the sealing portion 510 to move relative to the connecting portion 530. The first seal 500 is connected to the first valve core 200 via the sealing portion 510, so that the first valve core 200 can drive the sealing portion 510 to seal or open the communication hole 140. More specifically, as Figure 2 shown, the first valve core 200 is configured with a connecting head 230, and the connecting portion 530 is sleeved on the connecting head 230 to realize the connection with the first valve core 200.

[0107] The deformable portion 520 connects the sealing portion 510 and the connecting portion 530. In this way, during the movement of the sealing portion 510 with the first valve core 200, the deformable portion 520 deforms to adapt to the position change between the sealing portion 510 and the connecting portion 530, thereby reducing the pulling on the connecting portion 530 and improving the assembly reliability of the position of the connecting portion 530.

[0108] In some specific embodiments, as Figure 11 shown, the first valve core 200 is configured with a connecting head 230, and the first seal 500 is sleeved on the connecting head 230 and moves with the first valve core 200. While reliably sealing the communication hole 140, the assembly of the first seal 500 is made simpler and more convenient.

[0109] In some embodiments, as Figure 11As shown, a second valve cavity 161 is formed in the valve body 100, and the first valve core 200 is configured with a piston portion 240 adapted to the second valve cavity 161, and the piston portion 240 is located in the second valve cavity 161 and can move along the second valve cavity 161. The second valve cavity 161 can play a guiding role, so that the movement of the first valve core 200 is more precise, thereby more accurately controlling the on-off of the connecting hole 140.

[0110] Furthermore, if Figure 11 As shown, the inner wall of the second valve cavity 161 and the piston part 240 enclose a third area 1611, and the connecting hole 140 and the vent 112 are distributed in the third area 1611. In this way, the connecting hole 140 is connected to the vent 112 via the third area 1611 when it is open, and is disconnected from the third area 1611 and then from the vent 112 when it is sealed. The piston part 240 can limit gas leakage outside the third area 1611, thereby preventing gas leakage into the inside of the cover of the cooking device, ensuring the cleanliness and sanitation of the inside of the cover, and in the case where the first valve core 200 is driven by components such as the electric drive or the linkage slider 24, it can well prevent components such as the electric drive or the linkage slider 24 from contacting water vapor, improve the working environment of components such as the electric drive or the linkage slider 24, reduce the failure rate and delay aging.

[0111] In certain embodiments, such as Figure 2 , Figure 11 As shown, the valve body 100 has a main body 170 , a third valve cavity 171 communicating with the air suction port 111 is formed inside the main body 170 , and an air outlet interface 113 communicating with the third valve cavity 171 is provided on the main body 170 .

[0112] In certain embodiments, such as Figure 2 As shown, the main body 170 is provided with a communication hole 140 which is in communication with the third valve chamber 171 .

[0113] In certain embodiments, such as Figure 11 As shown, the main body 170 is provided with an assembly structure 172 , the assembly structure 172 is assembled with a matching body 160 , the matching body 160 is provided with a communicating hole 140 , and the communicating hole 140 is communicated with the third valve chamber 171 .

[0114] In certain embodiments, such as Figure 11As shown, the valve assembly has a bracket 700, on which at least a first mounting position 710 and a second mounting position 720 are formed. The main body portion 170 is mounted on the first mounting position 710, and the mating member 160 on the main body portion 170 is mounted on the second mounting position 720. The bracket 700 can be used to assemble and position the main body portion 170 and the mating member 160, so as to reinforce the assembly between the main body portion 170 and the mating member 160, prevent loosening and displacement between the main body portion 170 and the mating member 160, and improve the assembly reliability and quality of the product.

[0115] Furthermore, as Figure 11 shown, a bracket 700 is provided below the main body portion 170, and a gland 900 is provided above. The gland 900 is connected to the bracket 700 and locks the main body portion 170 between the gland 900 and the bracket 700. This can reinforce and shape the main body portion 170, improve the use strength of the main body portion 170, and improve the assembly reliability between the main body portion 170 and the mating member 160 and / or the on-off control component 800. For example, the main body portion 170 can be made of a sealing material such as silica gel, rubber, plastic, etc. Accommodating portions are respectively provided on the main body portion 170 corresponding to components such as the on-off control component 800 and the mating member 160. The insertion tube structures of components such as the on-off control component 800 and the mating member 160 are directly inserted into the accommodating portions to achieve sealed connection. For the main body portion 170 made of a sealing material, the main body portion 170 is locked by the bracket 700 and the gland 900 to shape and reinforce the main body portion 170, maintain the stability of the third valve cavity 171 in the main body portion 170, and improve the insertion stability and reliability of the insertion tube structures of the accommodating portions and components such as the on-off control component 800 and the mating member 160.

[0116] Furthermore, as Figure 11 shown, the assembly structure 172 includes one of an accommodating portion and an insertion portion (such as an insertion tube structure), and the mating member 160 on the main body portion 170 is provided with the other of the accommodating portion and the insertion portion, and the insertion portion is embedded in the accommodating portion. It has the advantages of simple structure, easy processing and manufacturing, and simple and convenient assembly operation.

[0117] In some embodiments, as Figure 2 、 Figure 11 shown, a second opening 173 is provided on the main body portion 170, and the detection element 300 extends out from the second opening 173. This can facilitate the detection element 300 to extend out for electrical connection assembly, and by making the detection element 300 extend out for electrical connection, it is more conducive to improving the working environment of the electrical connection portion 530 of the detection element 300 and improving the electrical installation performance of the detection element 300.

[0118] In some embodiments, as Figure 2As shown, a second seal 600 is provided on the main body 170, and the second seal 600 seals the gap between the second opening 173 and the detection element 300. This can prevent water vapor from leaking and contacting the power connection position of the detection element 300, making the use of the product more reliable and safe.

[0119] In some embodiments, as Figure 11 shown, a sealing abutting convex portion 174 is formed on the main body 170, and at least the sealing abutting convex portion 174 of the main body 170 is a sealing material body. The sealing abutting convex portion 174 abuts against the detection element 300 to form a sealing fit. This can prevent water vapor from leaking along the second opening 173 and contacting the power connection position of the detection element 300, making the use of the product more reliable and safe.

[0120] In some embodiments, as Figure 2 and Figure 11 shown, the valve assembly further has a on-off control component 800. The on-off control component 800 is connected to the air outlet interface 113 and controls the on-off of the air outlet interface 113. When air extraction is not required, the on-off control component 800 can be used to control the air outlet interface 113 to close, which is more conducive to maintaining pressure in the cooking cavity and can prevent the high or low pressure in the cooking cavity from damaging the air extraction device 25. When air extraction is required, the on-off control component 800 can be used to control the air outlet interface 113 to open, which is simple and convenient to use. And in this design, the on-off control component 800 is connected to the air outlet interface 113, which further realizes the multi-functionality and integration of the valve assembly. In this way, the modular degree of the cooking equipment components is higher and it is more convenient for product assembly.

[0121] In some embodiments, as Figure 11 shown, the on-off control component 800 has a second valve core 830. The air outlet interface 113 includes a groove body 1134 and a first hole 1132 and a second hole 1133 formed on the wall of the groove body 1134. The on-off control component 800 covers the groove body 1134 and the second valve core 830 extends into the groove body 1134 to close or open the first hole 1132, so as to make the first hole 1132 communicate or cut off with the second hole 1133, realizing the control of the second hole 1133 to let air in or cut off the air. When the first hole 1132 is blocked by the second valve core 830, the air outlet interface 113 is disconnected. In this way, the cooking cavity will not leak or suck air along the air outlet interface 113, which is more conducive to maintaining pressure in the cooking cavity and can better protect the positive and negative pressures of the air extraction device 25. When the second valve core 830 opens the first hole 1132, the first hole 1132 communicates with the second hole 1133, and then the second hole 1133 communicates with the air extraction port 111. The air extraction device 25 can extract the gas in the cooking cavity from the second hole 1133 to realize the air extraction function. This structure has the advantages of high integration degree, simple structure and low cost of the valve assembly.

[0122] In some embodiments, as Figure 2 shown, the on-off control component 800 is a control valve, which has an inlet 810 and an outlet 820, and the control valve is configured to control the internal conduction or cut-off between the inlet 810 and the outlet 820 via the control valve. Among them, the inlet 810 is communicated with the air outlet interface 113. It has the advantages of simple structure and convenient device.

[0123] In some embodiments, as Figure 2 and Figure 11 shown, the on-off control component 800 and the first valve core 200 are located on opposite sides of the valve body 100 (specifically, reference can be made to Figure 2 and Figure 11 shown, the on-off control component 800 and the first valve core 200 are located on the left and right sides of the valve body 100), and are arranged horizontally along the valve body 100.

[0124] The air extraction port 111 is located in the middle area of the valve body 100 (specifically, reference can be made to Figure 2 and Figure 11 shown, the air extraction port 111 is located in the middle area between the left and right ends of the valve body 100), and the air extraction head 130 of the valve body 100 extends longitudinally towards the valve body 100 (specifically, reference can be made to Figure 2 and Figure 11 shown, the air extraction head 130 extends up and down).

[0125] In this way, as Figure 2 and Figure 11 shown, the valve assembly 10-2 and / or the valve assembly 10-3 is generally T-shaped as a whole. The on-off control component 800 and the first valve core 200 are generally formed as two horizontal sides of the T shape, and the air extraction head 130 is generally formed as the bottom side of the T shape. In this way, the fitting compatibility between the valve assembly 10-2 and / or the valve assembly 10-3 and the cover body can be better, and the air extraction head 130 can be inserted downward into the pot lid (of course, it can also be called the cover plate). The on-off control component 800 and the first valve core 200 are located outside the pot lid and are generally horizontally arranged, so that the assembled structure is more space-saving and has a smaller volume, and it is also beneficial to the stable assembly of the valve assembly.

[0126] As Figures 3 to 5 and Figures 12 to 14 shown, the cover body assembly provided by the embodiment of the second aspect of the present invention includes: a cover body (specifically, reference can be made to the cover body 20-2 and / or the cover body 20-3 for understanding) and the valve assembly described in any of the above embodiments. The valve assembly is assembled on the cover body.

[0127] The cover body assembly provided by the above embodiment of the present invention has all the above beneficial effects by being provided with the valve assembly described in any of the above embodiments, and will not be elaborated here.

[0128] Furthermore, the cover body includes an inner cover 21 and a cover plate 22 arranged below the inner cover 21, a mounting port 22a is arranged on the cover plate 22, the valve assembly is arranged on the inner cover 21, and the exhaust head 130 is downwardly passed through the mounting port 22a for assembly.

[0129] In certain embodiments, such as Figure 5 , Figure 6 , Figure 13 and Figure 14 As shown, the cover assembly has a lock 23 and a cover opening and closing action member (for details, please refer to the attached Figure 5 , Figure 6 , Figure 13 and Figure 14 The cover opening and closing action member has a locking position for locking the lock buckle 23 and an unlocking position for unlocking the lock buckle 23, wherein the cover opening and closing action member cooperates with the first valve core 200 of the valve assembly and is suitable for triggering the first valve core 200 in the unlocking position, so that the first valve core 200 controls the passage 120 of the valve assembly to be conducted. In this way, the cover opening operation can simultaneously control the unlocking of the lock buckle 23 and the pressure relief of the cooking cavity, realize one-touch cover opening, ensure cover opening safety, and prevent the cover from sucking the pot.

[0130] In some embodiments, the cover opening and closing action member includes at least one of a linkage slider 24 and an electric drive member. The linkage slider 24 is used to realize the one-key cover opening and pressure relief operation, and the one-key control has higher accuracy, anti-interference and energy saving, making the one-key control of cover opening and pressure relief more reliable. The electric drive member is used to control the action of the first valve core 200, so that the user can perform one-key operation more labor-saving, further improving the comfort of the product.

[0131] In certain embodiments, such as Figure 3 and Figure 12 As shown, the cover assembly also has an exhaust device 25, which is connected to the valve assembly and exhausts air from the air outlet interface 113 of the valve assembly. The exhaust device 25 and the valve assembly are integrated in the cover assembly, which is more convenient for product assembly and pipe routing. In addition, the exhaust device 25 is used to exhaust air from the cooking cavity that is not formed by the cover assembly, thereby further enriching the cooking form of the product and better meeting the different usage requirements of users.

[0132] In some embodiments, the vent 112 of the valve assembly is in communication with the outside, so that the cooking cavity device can inhale air from the outside or exhaust air to the outside through the vent 112, and has the advantages of simple structure and low cost.

[0133] In certain embodiments, such as Figure 3 and Figure 12As shown, the cover assembly further has an intake valve 26, and the intake valve 26 communicates with the vent port 112 of the valve assembly. In this way, by setting the vent port 112 to communicate with the intake valve 26 of the cover assembly, when the intake valve 26 is opened to enable the vent port 112 to communicate with the outside for the cooking cavity to intake or exhaust air, the intake and exhaust of the vent port 112 can be made smoother and more stable, and it is also beneficial for cleaning and dust prevention at the position of the vent port 112.

[0134] An embodiment of the third aspect of the present invention provides a cooking device, including: a cooking pot 30 and the cover assembly described in any of the above embodiments. The cover assembly covers the cooking pot 30 and encloses a cooking cavity with the cooking pot 30, and the air extraction port 111 of the valve assembly of the cover assembly communicates with the cooking cavity.

[0135] The cooking device provided by the above embodiments of the present invention has all the above beneficial effects by being provided with the cover assembly described in any of the above technical solutions, and will not be elaborated here. Specific Embodiment 1:

[0137] As Figure 1 and Figure 2 shown, this embodiment provides a valve assembly 10-2, including a valve body 100, a first valve core 200, and a detection element 300.

[0138] Specifically, the valve body 100 includes an air extraction head 130, a main body portion 170, and a cover body 150. The air extraction head 130 is a slender cylindrical structure with a hollow interior and both ends penetrating. One end of the air extraction head 130 in the length direction forms a first opening 131. The main body portion 170 is an integral component. A third valve cavity 171 is formed inside the main body portion 170. The other end of the air extraction head 130 in the length direction is connected to the main body portion 170, and the space inside the air extraction head 130 communicates with the third valve cavity 171. A second opening 173 communicating with the third valve cavity 171 is provided at one end of the main body portion 170 away from the air extraction head 130.

[0139] The outer structure of the side wall of the main body portion 170 has a concave cavity portion, which is a structure with one end open, and the bottom wall of the concave cavity portion is opposite to the opening position of the concave cavity portion. A through communication hole 140 is provided on the bottom wall of the concave cavity portion, and the communication hole 140 communicates with the third valve cavity 171. The cover body 150 is mounted on the opening of the concave cavity portion and encloses a first valve cavity 151 with the concave cavity portion. A first sealing member 500 is provided in the first valve cavity 151. The first sealing member 500 includes a sealing portion 510, a connecting portion 530, and a deformable portion 520 connecting the sealing portion 510 and the connecting portion 530. The connecting portion 530 is clamped by the cover body 150 and the concave cavity portion to fix the first sealing member 500 to the valve body 100. The partition wall formed by the connecting portion 530, the deformable portion 520, and the sealing portion 510 divides the first valve cavity 151 into two parts. Among these two parts, the part surrounded by the concave cavity portion and the first sealing member 500 is the first region 1511, and the part surrounded by the cover body 150 and the first sealing member 500 is the second region 1512. An air vent 112 is provided on the side wall of the concave cavity portion, so that both the communication hole 140 and the air vent 112 are located in the first region 1511. A through insertion hole is provided on the cover body 150.

[0140] A part of the first valve core 200 is formed as a switching action portion 210, and the other part is formed as an opening / closing cover linkage portion 220. The opening / closing cover linkage portion 220 is used to cooperate with an opening action member (such as an opening button, an opening buckle plate, a linkage slider 24, etc.) so that the first valve core 200 moves with the opening action member to realize the control of the first valve core 200 by the opening action member. The switching action portion 210 and the opening / closing cover linkage portion 220 form a turning transition, so that the structural shape of the first valve core 200 generally presents an L shape. Among them, the switching action portion 210 extends horizontally and extends into the second region 1512 from the insertion hole. One end of the switching action portion 210 far away from the opening / closing cover linkage portion 220 is constructed as a connecting head 230. A fixing groove is constructed on the sealing portion 510. The connecting head 230 is embedded in the fixing groove, and a flange is provided on the side wall of the connecting head 230, and the flange is clamped with the depression on the side wall of the fixing groove to fix the connecting head 230 to the sealing portion 510. The sealing portion 510 moves with the first valve core 200. The deformable portion 520 is a flexible structure, and the deformable portion 520 can adapt to the position change between the sealing portion 510 and the connecting portion 530 by deformation to prevent mutual pulling. In addition, an elastic reset member 400, specifically a spring, is provided between the cover body 150 and the switching action portion 210. When the first valve core 200 opens the communication hole 140, the spring is compressed, and the elastic restoring force of the spring drives the first valve core 200 to move towards the position of sealing the communication hole 140.

[0141] The detection element 300 is in the shape of an elongated rod. The detection element 300 is disposed through the third valve cavity 171. One end of the detection element 300 passes through the air extraction head 130 and extends out from the first opening 131, and the other end of the detection element 300 extends out from the second opening 173 of the main body portion 170. The detection element 300 is provided with a connecting plate 320. The connecting plate 320 is located outside the main body portion 170 and is sleeved on the portion of the detection element 300 extending out of the second opening 173. A second seal 600 is provided between the detection element 300 and the second opening 173 for sealing. The portion of the detection element 300 extending out of the first opening 131 forms a detection portion 310. The detection portion 310 is used to extend into the cooking cavity to detect the working condition parameters such as temperature, pressure or humidity in the cooking cavity. Wherein, the first opening 131 forms an air extraction port 111, and a first gap 132 is formed between the detection portion 310 and the first opening 131 for the first opening 131 to intake or exhaust air. A second gap 134 is formed between the detection element 300 and the inner wall of the air extraction head 130, and the second gap 134 communicates with the first gap 132. In this way, when the communication hole 140 is opened, a channel 120 is formed between the first gap 132 and the ventilation port 112: the second gap 134 - the third valve cavity 171 - the communication hole 140 - the first region 1511. This channel 120 enables the first gap 132 and the ventilation port 112 to be conducted. When the communication hole 140 is sealed, the connection between the communication hole 140 and the first region 1511 is disconnected, so that the connection between the first gap 132 and the ventilation port 112 along the channel 120 is disconnected, that is, not communicated.

[0142] An air outlet interface 113 is further provided on the main body portion 170. The air outlet interface 113 communicates with the third valve cavity 171, and further communicates with the second gap 134 and the first gap 132. The air outlet interface 113 is used for assembling or centrally connecting with the air extraction device 25. When the air extraction device 25 works, the gas in the cooking cavity is extracted along the path of the first gap 132 - the second gap 134 - the third valve cavity 171 - the air outlet interface 113.

[0143] The valve assembly 10-2 provided in this specific embodiment realizes the integration of the air suction port, the ventilation port 112, and the detection assembly port. The cooking device only needs to set one installation port for assembling with the valve body 100 to realize the conduction of the air extraction port 111 and the cooking cavity. Compared with the structure in the related art where at least an air extraction assembly port, an air intake assembly port, and a detection assembly port need to be set on the cooking device, the number of openings is streamlined. This is more conducive to simplifying the structure of the cooking device components, while simplifying the product assembly process, and better ensuring the strength of the cooking device components, and achieving the improvement of product quality and the reduction of product cost in a balanced manner. Specific Embodiment 2

[0145] Such as Figure 1 And Figure 2As shown, this embodiment provides a valve assembly 10-2, which is provided with a on-off control component 800 on the basis of Embodiment 1. The on-off control component 800 is connected to the air outlet interface 113 and controls the on-off of the air outlet interface 113. In this way, it is more conducive to improving the pressure-holding effect in the cooking cavity.

[0146] More specifically, the on-off control component 800 has a second valve core 830. The air outlet interface 113 includes a groove body 1134 and a first hole 1132 and a second hole 1133 formed on the wall of the groove body 1134. The on-off control component 800 covers the groove body 1134 and the second valve core 830 extends into the groove body 1134 to close or open the first hole 1132. The second hole 1133 is used to connect to the air extraction device 25. When the first hole 1132 is open, the cooking cavity is communicated with the air extraction device 25, and the air extraction device 25 can extract air from the cooking cavity when it works. When the first hole 1132 is closed, the connection between the air extraction device 25 and the cooking cavity is disconnected, which is conducive to pressure-holding in the cooking cavity and is also more conducive to overpressure protection of the air extraction device 25. Specific Embodiment 3

[0148] As Figure 3 、 Figure 4 and Figure 5 As shown, this specific embodiment provides a cover assembly, including: a cover body 20-2 and the valve assembly 10-2 described in the above Specific Embodiment 2. An installation port 22a is provided on the cover body 20-2; the valve body 100 of the valve assembly 10-2 is connected to the installation port 22a. Specifically, for example, the air extraction head 130 of the valve assembly 10-2 is inserted into the installation port 22a.

[0149] The cover assembly provided by the above embodiments of the present invention has all the above beneficial effects by being provided with the valve assembly 10-2 described in any of the above technical solutions, which will not be elaborated here.

[0150] Furthermore, the cover assembly has a lock catch 23 and an opening / closing cover action member, and the opening / closing cover action member is specifically a linkage slider 24. More specifically, as Figure 6 and Figure 8 shown, the cover assembly has a handle 27, and the handle 27 is connected to the linkage slider 24 and drives the linkage slider 24 to move. Among them, as Figure 3 、 Figure 4 and Figure 5As shown in the figure, the linkage slider 24 specifically includes a slider body 24a, a lever 24b connected to the slider body 24a, and a guide block 24c connected to the slider body 24a. The slider body 24a is connected to the handle 27. The lever 24b is connected to the latch 23 and is used to control the unlocking or locking of the latch 23 as the slider body 24a moves. The guide block 24c cooperates with the opening / closing cover linkage portion 220 of the first valve core 200 of the valve assembly 10-2. Specifically, a guide inclined surface or a guide arc surface is formed on the guide block 24c, and the guide inclined surface or the guide arc surface abuts and cooperates with the opening / closing cover linkage portion 220. The linkage slider 24 has a locking position for locking the latch 23 and an unlocking position for unlocking the latch 23. Among them, as Figure 4 shown, it is a schematic structural diagram of the linkage slider 24 in the locking position. At this time, the opening / closing cover linkage portion 220 of the first valve core 200 cooperates with the lower position of the guide inclined surface, so that it will not be pushed up by the guide inclined surface. In this way, the first valve core 200 is reset to the first position under the elastic restoring force of the elastic restoring member 400, so that the first valve core 200 controls the disconnection of the channel 120. In this way, the cooking cavity will not inhale or exhaust air along the air vent 112, so that the pressure in the cooking cavity can be better maintained. As Figure 5 shown, it is a schematic structural diagram of the linkage slider 24 in the unlocking position. At this time, the opening / closing cover linkage portion 220 of the first valve core 200 cooperates with the higher position of the guide inclined surface, and the guide inclined surface pushes the first valve core 200 to the side. In this way, the first valve core 200 moves to the second position to compress the elastic restoring member 400 and control the opening of the communication hole 140. In this way, the cooking cavity can inhale or exhaust air along the air vent 112 to realize the pressure relief of the cooking cavity. Generally speaking, it realizes that the opening operation can simultaneously control the unlocking of the latch 23 and the pressure relief of the cooking cavity, realizes one-key opening of the cover, ensures the safety of opening the cover, and prevents the pot from being sucked when opening the cover.

[0151] Of course, the present solution is not limited to this. In other embodiments, the opening / closing cover action member can also be set as an opening button / opening handle 27 / opening push plate and other components. In this way, when the user operates the opening button / opening handle 27 / opening push plate to control the locking or unlocking of the latch 23, the acting force is directly transmitted to the opening / closing cover linkage portion 220 to realize the corresponding control of the first valve core 200. Or, in other embodiments, the opening / closing cover action member can also include an opening motor, an opening electromagnetic push rod and other electric drive members, so that when the locking or unlocking of the latch 23 is controlled by operating members such as buttons and handles 27, the electric drive members are triggered to make the electric drive members respond to the corresponding drive of the first valve core 200, and the operation is more labor-saving.

[0152] Furthermore, as Figure 3 shown, the cover assembly further has an air extraction device 25. The air extraction device 25 is connected to the valve assembly 10-2 and extracts air from the air outlet interface 113 of the valve assembly 10-2.

[0153] More specifically, for example, the air extraction device 25 includes a first pipe 25a, an air pump 25b, and a second pipe 25c. The inlet of the air pump 25b is connected to the first pipe 25a, and the outlet is connected to the second pipe 25c. The second pipe 25c can communicate with an external air source such as the atmosphere. The first pipe 25a is connected to the second hole 1133 of the valve assembly 10-2 so that when the first hole 1132 is opened, the air pump 25b can extract air from the air outlet interface 113.

[0154] Furthermore, the cover assembly further has an intake valve 26, and the intake valve 26 communicates with the ventilation port 112 of the valve assembly 10-2. More specifically, as Figure 3 shown, the ventilation port 112 and the intake valve 26 are connected through a connecting pipe 28. When the cover assembly is opened, the intake valve 26 is driven to open, so that the ventilation port 112 communicates with the outside through the intake valve 26. Of course, this solution is not limited to this. In other embodiments, the ventilation port 112 of the valve assembly 10-2 can also be designed to communicate directly with the outside. Specific Embodiment 4

[0156] As Figure 10 and Figure 11 shown, this embodiment provides a valve assembly 10-3, which includes a valve body 100, a first valve core 200, and a detection element 300.

[0157] Specifically, the valve body 100 includes an air extraction head 130, a main body portion 170, and a cover 150. The air extraction head 130 is a slender cylindrical structure with a hollow interior and both ends penetrating. One end of the air extraction head 130 in the length direction forms a first opening 131. The main body portion 170 is an integral component. A third valve cavity 171 is formed inside the main body portion 170. The other end of the air extraction head 130 in the length direction is connected to the main body portion 170, and the space inside the air extraction head 130 communicates with the third valve cavity 171.

[0158] The valve assembly 10-3 further has a mating body 160. The mating body 160 has a concave housing. One end of the concave housing has an opening, and the concave housing has a first insertion tube opposite to the opening position. The first insertion tube is formed as an embedding portion. An assembly structure 172 is constructed on the main body portion 170. Specifically, a first socket is provided on the main body portion 170. The first socket is formed as a receiving portion, and the first insertion tube is inserted into the first socket for assembly.

[0159] A part of the first valve core 200 is formed as a on-off action portion 210, and the other part is formed as an opening-closing cover linkage portion 220.

[0160] A connector 230 is formed on the on-off acting part 210. The first seal 500 is sleeved on the connector 230 and moves with the first valve core 200 to open or seal the communication hole 140. Wherein, a piston part 240 adapted to the second valve cavity 161 is further constructed on the on-off acting part 210. The piston part 240 is located in the second valve cavity 161 and is movable along the second valve cavity 161. A third area 1611 is enclosed by the inner wall of the second valve cavity 161 and the piston part 240. The communication hole 140 and the ventilation port 112 are distributed in the third area 1611.

[0161] The opening and closing cover linkage part 220 is used to cooperate with an opening cover action part (such as an opening cover button, an opening cover buckle plate, a linkage slider 24 and other components), so that the first valve core 200 moves with the opening cover action part, realizing the control of the first valve core 200 by the opening cover action part. A turning transition is formed between the on-off acting part 210 and the opening and closing cover linkage part 220, so that the structural shape of the first valve core 200 is roughly in an L shape. Wherein, the on-off acting part 210 extends horizontally and extends into the second valve cavity 161 from the opening of the concave shell. One end of the on-off acting part 210 far away from the opening and closing cover linkage part 220 is constructed as a connector 230. A fixing groove is constructed on the first seal 500. The connector 230 is embedded in the fixing groove, and a flange is arranged on the side wall of the connector 230, and the flange is clamped with a depression on the side wall of the fixing groove, realizing the fixation of the connector 230 and the first seal 500. In addition, an elastic reset part 400 is provided for the on-off acting part 210, specifically a spring. When the first valve core 200 opens the communication hole 140, the spring is compressed, and the elastic restoring force of the spring drives the first valve core 200 to move towards the position of sealing the communication hole 140.

[0162] One end of the main body part 170 far away from the air extraction head 130 is provided with a second opening 173 communicating with the third valve cavity 171, and the main body part 170 is constructed with an abutting and sealing convex part 174 at the position of the second opening 173.

[0163] The detection element 300 is in the shape of a slender rod. The detection element 300 is arranged in the third valve cavity 171. One end of the detection element 300 passes through the air extraction head 130 and extends out from the first opening 131, and the other end of the detection element 300 extends out from the second opening 173 of the main body part 170 and abuts against the abutting and sealing convex part 174 to form a sealing fit. Compared with the structure of the specific embodiment 1, the second seal 600 can be omitted. The detection element 300 is provided with a connecting plate 320. The connecting plate 320 is at least partially located outside the main body part 170 and is sleeved on the part of the detection element 300 extending out of the second opening 173.

[0164] The portion of the detection element 300 extending out of the first opening 131 is formed as a detection portion 310, and the detection portion 310 is used to extend into the cooking cavity to detect working condition parameters such as temperature, pressure or humidity in the cooking cavity. Among them, one or more air extraction ports 111 are provided at the portion of the air extraction head 130 around the first opening 131 for the air extraction head 130 to achieve air intake or air outlet. A second gap 134 is formed between the detection element 300 and the inner wall of the air extraction head 130, and the second gap 134 communicates with the air extraction port 111. In this way, when the communication hole 140 is opened, a channel 120 is formed between the air extraction port 111 and the ventilation port 112: the second gap 134 - the third valve cavity 171 - the communication hole 140 - the third region 1611, and this channel 120 enables the air extraction port 111 and the ventilation port 112 to be conducted. When the communication hole 140 is sealed, the connection between the communication hole 140 and the third region 1611 is disconnected, so that the air extraction port 111 and the ventilation port 112 are disconnected along this channel 120, that is, not connected.

[0165] An air outlet interface 113 is further provided on the main body portion 170, and the air outlet interface 113 communicates with the third valve cavity 171, and further communicates with the second gap 134 and the air extraction port 111. The air outlet interface 113 is used to be assembled or centrally connected with the air extraction device 25, so that when the air extraction device 25 works, the gas in the cooking cavity is extracted along the path of the air extraction port 111 - the second gap 134 - the third valve cavity 171 - the air outlet interface 113.

[0166] The valve assembly 10 - 3 provided in this specific embodiment realizes the integration of the air suction port, the ventilation port 112, and the detection and assembly port. The cooking device only needs to set one installation port for assembling with the valve body 100 to realize the conduction between the air extraction port 111 and the cooking cavity. Compared with the structure in the related art where at least an air extraction assembly port, an air intake assembly port, and a detection and assembly port need to be set on the cooking device, the number of openings is streamlined, which is more conducive to simplifying the structure of the cooking device components, while simplifying the product assembly process, and better ensuring the strength of the cooking device components, and simultaneously achieving the improvement of product quality and the reduction of product cost.

[0167] Furthermore, as Figure 10 and Figure 11 shown, the valve assembly 10 - 3 further has a on - off control component 800. The on - off control component 800 is connected to the air outlet interface 113 and controls the on - off of the air outlet interface 113. In this way, it is more conducive to improving the pressure - maintaining effect in the cooking cavity.

[0168] Specifically, the on - off control component 800 is a control valve. The control valve has an inlet 810 and an outlet 820, and the control valve is configured to control the conduction or cut - off between the inlet 810 and the outlet 820 through the inside of the control valve. Among them, the inlet 810 communicates with the air outlet interface 113.

[0169] More specifically, the inlet 810 of the control valve is arranged as a second insertion tube in a protruding setting. A second socket 1131 is provided on the main body portion 170 of the valve assembly 10-3. The second insertion tube is inserted into the second socket 1131 to realize the assembly of the control valve and the main body portion 170.

[0170] Furthermore, as Figure 11 shown, the valve assembly 10-3 further has a bracket 700. The bracket 700 is provided with a first mounting position 710, a second mounting position 720, and a third mounting position 730. The main body portion 170 is mounted on the first mounting position 710, the mating body 160 is mounted on the second mounting position 720, and the control valve is mounted on the third mounting position 730. In this way, the three are respectively assembled with the bracket 700 to realize positioning and limiting among the three, which is more conducive to improving the connection stability between the main body portion 170 and the mating body 160, and between the main body portion 170 and the control valve.

[0171] More specifically, both the second mounting position 720 and the third mounting position 730 include a positioning groove 751 and a buckle 752. The mating body 160 is received in the positioning groove 751 of the second mounting position 720 and is clamped with the buckle 752 of the second mounting position 720 to be locked to the bracket 700. The control valve is received in the positioning groove 751 of the third mounting position 730 and is clamped with the buckle 752 of the third mounting position 730 to be locked to the bracket 700. In addition, a tube body portion protrudes from the mating body 160, and an air vent 112 is formed in the tube body portion and communicates with the third region 1611. Among them, an avoidance hole 740 is provided on the bracket 700, and the tube body portion passes through the avoidance hole 740.

[0172] The first mounting position 710 also has a positioning groove 751 and a buckle 752. Among them, the main body portion 170 is received in the positioning groove 751 of the third mounting position 730. The valve assembly 10-3 further includes a gland 900. The gland 900 is covered on the main body portion 170. The gland 900 is provided with a lug 910, and the gland 900 is clamped with the buckle 752 via the lug 910 to realize the locking of the gland 900 and the bracket 700. And by clamping the main body portion 170 between the gland 900 and the bracket 700, the main body portion 170 is locked between the gland 900 and the bracket 700. With such a structure, by clamping and locking the main body portion 170 up and down between the gland 900 and the bracket 700, the connection reliability between the first socket and the first insertion tube and between the second socket 1131 and the second insertion tube can be strengthened, and loosening can be avoided.

[0173] In some specific embodiments, the main body 170 can be further set as a sealing material body, such as rubber, silicone body, etc. In this way, the sealing between the first socket and the first plug, between the second socket 1131 and the second plug, and between the main body 170 and the air extraction head 130 is better. At the same time, there is no need to separately set a sealing ring, which simplifies the composition and installation of the product. Among them, locking the main body 170 with the gland 900 and the bracket 700 can strengthen, protect and shape the main body 170 made of the sealing material. In this way, the space volume in the third valve cavity 171 is more stable, the conduction is more efficient, and the assembly between the main body 170 and the mating body 160, the air extraction head 130, and the control valve connected thereto is also more reliable. Specific Embodiment 5

[0175] Such as Figure 12 、 Figure 13 and Figure 14 As shown, this specific embodiment provides a cover assembly, including: a cover body 20-3 and the valve assembly 10-3 described in the above Specific Embodiment 4. An installation port 22a is provided on the cover body 20-3; the valve body 100 of the valve assembly 10-3 is connected to the installation port 22a. Specifically, for example, the air extraction head 130 of the valve assembly 10-3 is inserted into the installation port 22a.

[0176] The cover assembly provided by the above embodiments of the present invention has all the above beneficial effects by setting the valve assembly 10-3 described in any of the above technical solutions, and will not be elaborated here.

[0177] Further, the cover assembly has a buckle 23 and an opening / closing cover actuating member, and the opening / closing cover actuating member is specifically a linkage slider 24. More specifically, as Figure 15 and Figure 17 shown, the cover assembly has a handle 27, and the handle 27 is connected to the linkage slider 24 and drives the linkage slider 24 to move. Among them, as Figure 13 and Figure 14 shown, the linkage slider 24 specifically includes a slider body 24a, a lever 24b connected to the slider body 24a, and a guide block 24c connected to the slider body 24a. The slider body 24a is connected to the handle 27. The lever 24b is connected to the buckle 23 and is used to control the unlocking or locking of the buckle 23 as the slider body 24a moves. The guide block 24c cooperates with the opening / closing cover linkage portion 220 of the first valve core 200 of the valve assembly 10-3. Specifically, a guide inclined surface or a guide arc surface is formed on the guide block 24c, and the guide inclined surface or the guide arc surface abuts and cooperates with the opening / closing cover linkage portion 220. The linkage slider 24 has a locking position for locking the buckle 23 and an unlocking position for unlocking the buckle 23. Among them, as Figure 13As shown, it is a schematic structural diagram of the linkage slider 24 in the locked position. At this time, the lid opening / closing linkage part 220 of the first valve core 200 cooperates with the lower position of the guiding inclined surface, so that it will not be lifted by the guiding inclined surface. In this way, under the elastic restoring force of the elastic restoring member 400, the first valve core 200 is reset to the first position, so that the control channel 120 of the first valve core 200 is disconnected. In this way, the cooking cavity will not inhale or exhaust air along the air vent 112, so that the pressure in the cooking cavity can be well maintained. As Figure 14 As shown, it is a schematic structural diagram of the linkage slider 24 in the unlocked position. At this time, the lid opening / closing linkage part 220 of the first valve core 200 cooperates with the higher position of the guiding inclined surface, and the guiding inclined surface pushes the first valve core 200 upward to the side. In this way, the first valve core 200 moves to the second position, compressing the elastic restoring member 400 and controlling the communication hole 140 to open. In this way, the cooking cavity can inhale or exhaust air along the air vent 112 to realize pressure relief of the cooking cavity. Generally speaking, it realizes that the lid opening operation can simultaneously control the unlocking of the lock 23 and control the pressure relief of the cooking cavity, realizes one-key lid opening, ensures the safety of lid opening, and prevents the pot from being sucked when opening the lid.

[0178] Of course, the present solution is not limited to this. In other embodiments, the lid opening / closing action member can also be set as a lid opening button / lid opening handle 27 / lid opening push plate and other components. In this way, when the user operates the lid opening button / lid opening handle 27 / lid opening push plate to control the locking or unlocking of the lock 23, the acting force is directly transmitted to the lid opening / closing linkage part 220 to realize the corresponding control of the first valve core 200. Or, in other embodiments, the lid opening / closing action member can also include electric drive components such as a lid opening motor and a lid opening electromagnetic push rod, so that when the lock 23 is unlocked or locked by operating components such as a button and a handle 27, by triggering the electric drive component, the electric drive component responds to the corresponding drive of the first valve core 200, making the operation more labor-saving.

[0179] Furthermore, as Figure 12 shown, the cover assembly further has an air extraction device 25, and the air extraction device 25 is connected to the valve assembly 10-3 and extracts air from the air outlet interface 113 of the valve assembly 10-3.

[0180] More specifically, for example, the air extraction device 25 includes a first pipe 25a, an air pump 25b and a second pipe 25c. The inlet of the air pump 25b is connected to the first pipe 25a, and the outlet is connected to the second pipe 25c. The second pipe 25c can be communicated with an external air source such as air, and the first pipe 25a is connected to the outlet 820 of the control valve in the valve assembly 10-3, so that when the control valve is opened, the air pump 25b can extract air from the air outlet interface 113.

[0181] Even further, the cover assembly further has an intake valve 26 and the intake valve 26 is communicated with the air vent 112 of the valve assembly 10-3. More specifically, as Figure 12As shown, the vent 112 is communicated with the intake valve 26 through the connecting pipe 28. When the cover assembly is opened, the intake valve 26 is driven to open, so that the vent 112 is communicated with the outside through the intake valve 26. Of course, this solution is not limited to this. In other embodiments, the vent 112 of the valve assembly 10-3 can also be designed to be directly communicated with the outside. Specific Embodiment 6

[0183] As Figures 6 to 9 and Figures 15 to 18 As shown, this specific embodiment provides a cooking device, including: a cooking pot 30 and the cover assembly described in any of the above embodiments. The cover assembly covers the cooking pot 30 and encloses a cooking cavity with the cooking pot 30. The air extraction port 111 of the valve assembly of the cover assembly is communicated with the cooking cavity.

[0184] The cooking device provided in the above embodiments of the present invention has all the above beneficial effects by being provided with the cover assembly described in any of the above embodiments, and will not be elaborated here.

[0185] For example, the cooking device is a pressure cooker, a rice cooker, a micro-pressure rice cooker, etc. The cooking device has a cooking pot body 40, and the cooking pot body 40 is provided with a heating element. The cooking pot 30 is accommodated in the cooking pot body 40, and the heating element heats the cooking pot 30 for cooking.

[0186] In the present invention, the terms "first", "second", and "third" are only used for the purpose of description and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installation", "connection", "connection", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0187] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation to the present invention.

[0188] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0189] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve assembly, characterized in that, For a cooking device having a cooking cavity, the valve assembly includes: A valve body provided with an air extraction port and a ventilation port, an air outlet interface communicating with the air extraction port is provided on the valve body, and a channel communicating with the air extraction port and the ventilation port is formed in the valve body; A first valve core, which cooperates with the valve body and controls the on-off of the channel, so that the air extraction port and the ventilation port are conducted or cut off along the channel; Wherein, the first valve core controls the disconnection between the ventilation port and the air extraction port to extract the gas in the cooking cavity through the air extraction port and the air outlet interface, and the first valve core controls the connection between the ventilation port and the air extraction port to enable the gas in the valve body to enter the cooking cavity through the air extraction port; The valve body is provided with a communication hole, the communication hole communicates with the air extraction port and forms a part of the channel. Wherein, the first valve core is movably connected to the valve body and has a first position and a second position relative to the movement of the valve body. The first valve core seals the communication hole at the first position to cut off the channel, and opens the communication hole at the second position to conduct the channel.

2. The valve assembly according to claim 1, wherein It further includes: A detection element having a detection part; the valve body has an air extraction head, and the detection part and the air extraction port are arranged on the air extraction head.

3. The valve assembly according to claim 2, wherein The detection element is partially accommodated in the air extraction head, the air extraction head is provided with a first opening, the detection part passes through the first opening and extends out of the air extraction head from the first opening. Wherein, the air extraction port is arranged at a position around the first opening on the air extraction head, and / or the first opening forms the air extraction port and a first gap is formed between the first opening and the detection part.

4. The valve assembly according to claim 3, wherein A cavity is formed inside the air extraction head, the detection element is partially accommodated in the cavity and a second gap is formed between the detection element and the inner wall of the cavity. The second gap forms a part of the channel and communicates with the air extraction port.

5. The valve assembly according to any one of claims 1 to 4, wherein The first valve core is configured with an on-off action part and an opening-closing cover linkage part connected to each other. The on-off action part moves with the opening-closing cover linkage part. The movement of the opening-closing cover linkage part has an open cover position and a closed cover position. The opening-closing cover linkage part controls the channel to be conducted at the open cover position, and the opening-closing cover linkage part controls the channel to be cut off at the closed cover position.

6. The valve assembly according to any one of claims 1 to 4, characterized in that It further includes: An elastic reset member, which cooperates with the first valve core. Wherein, the first valve core compresses the elastic reset member at the second position, and the elastic reset member elastically returns to drive the first valve core to move towards the first position.

7. The valve assembly according to any one of claims 1 to 4, wherein The first valve core is provided with a first seal. When the first valve core is in the first position, the first seal blocks the communication hole and abuts against the portion around the communication hole. When the first valve core is in the second position, the first seal is separated from the communication hole.

8. The valve assembly according to claim 7, wherein a first valve cavity is formed in the valve body. The first seal is located in the first valve cavity and divides the first valve cavity into a first region and a second region. The communication hole and the ventilation port are distributed in the first region. At least a part of the first valve core extends into the second region and is connected to the first seal.

9. The valve assembly according to claim 8, wherein the valve body has a main body portion and a cover body. The main body portion is connected to the cover body to enclose the first valve cavity. Part of the first seal is clamped by the main body portion and the cover body.

10. The valve assembly according to claim 7, wherein the first seal includes a sealing portion, a deformable portion and a connecting portion. The deformable portion connects the sealing portion and the connecting portion. The connecting portion is connected to the valve body. The sealing portion is connected to the first valve core and is adapted to seal or open the communication hole. The movement of the first valve core causes the sealing portion to move relative to the connecting portion; or the first valve core is configured with a connecting head, and the first seal is sleeved on the connecting head and moves with the first valve core.

11. The valve assembly according to any one of claims 1 to 4, wherein a second valve cavity is formed in the valve body. The first valve core is configured with a piston portion adapted to the second valve cavity. The piston portion is located in the second valve cavity and is movable along the second valve cavity. Wherein, the inner wall of the second valve cavity and the piston portion enclose a third region, and the communication hole and the ventilation port are distributed in the third region.

12. The valve assembly according to any one of claims 1 to 4, wherein the valve body has a main body portion. A third valve cavity communicating with the air extraction port is formed inside the main body portion, and an air outlet interface communicating with the third valve cavity is provided on the main body portion. Wherein, a communication hole communicating with the third valve cavity is provided on the main body portion; or an assembly structure is provided on the main body portion, and a mating body is assembled on the assembly structure. The mating body is provided with the communication hole and the communication hole communicates with the third valve cavity.

13. The valve assembly according to claim 12, wherein the valve assembly has a bracket, and at least a first mounting position and a second mounting position are formed on the bracket. The main body portion is mounted on the first mounting position, and the mating body on the main body portion is mounted on the second mounting position; and / or a bracket is provided below the main body portion, and a gland is provided above the main body portion. The gland is connected to the bracket and locks the main body portion between the gland and the bracket; and / or the assembly structure includes one of a receiving portion and an inserting portion, and the mating body on the main body portion is provided with the other of the receiving portion and the inserting portion. The inserting portion is embedded in the receiving portion; and / or The main body is provided with a second opening, and a detection element is partially accommodated in the third valve cavity and extends out from the second opening. Among them, the main body is provided with a second seal, and the second seal seals the gap between the second opening and the detection element, or the main body is configured with an abutting sealing convex part, and at least the abutting sealing convex part of the main body is a sealing material body, and the abutting sealing convex part abuts against the detection element to form a sealing fit.

14. The valve assembly according to any one of claims 1 to 4, wherein the valve assembly further has a on-off control component, the on-off control component is connected to the air outlet interface, and controls the on-off of the air outlet interface.

15. The valve assembly according to claim 14, wherein the on-off control component has a second valve core, the air outlet interface includes a groove body and a first hole and a second hole formed on the wall of the groove body, the on-off control component covers the groove body, and the second valve core extends into the groove body and closes or opens the first hole so that the second hole cuts off or conducts air.

16. The valve assembly according to claim 14, wherein the on-off control component is a control valve, the control valve has an inlet and an outlet, and the control valve is configured to control the conduction or cut-off between the inlet and the outlet through the inside of the control valve, wherein the inlet is communicated with the air outlet interface.

17. The valve assembly according to claim 14, wherein the air extraction port is located in the middle area of the valve body, and the air extraction head of the valve body extends longitudinally towards the valve body; the on-off control component and the first valve core are located on opposite sides of the valve body and are arranged transversely along the valve body.

18. A cover assembly, characterized in that, Comprising: A cover body; The valve assembly according to any one of claims 1 to 17, and the valve assembly is assembled on the cover body.

19. The cover body assembly according to claim 18, wherein the cover body assembly has a lock and an opening and closing cover action member, the opening and closing cover action member has a locking position for locking the lock and an unlocking position for unlocking the lock, wherein the opening and closing cover action member cooperates with the first valve core of the valve assembly and is adapted to trigger the first valve core at the unlocking position to make the first valve core control the conduction of the channel of the valve assembly; The opening and closing cover action member includes at least one of a linkage slider and an electric driving member.

20. The cover body assembly according to claim 18 or 19, wherein the cover body assembly further has an air extraction device, the air extraction device is connected to the valve assembly and extracts air from the air outlet interface of the valve assembly; and / or the air vent of the valve assembly is communicated with the outside, or the cover body assembly further has an intake valve and the intake valve is communicated with the air vent of the valve assembly.

21. A cooking device, characterized in that, Comprising: A cooking pot; The cover body assembly according to any one of claims 18 to 20, which is covered on the cooking pot and encloses a cooking cavity with the cooking pot, and the air extraction port of the valve assembly of the cover body assembly is communicated with the cooking cavity.

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