Exhaust mechanism of cooking utensil and cooking utensil

Abstract

The utility model relates to the field of household appliances, and discloses an exhaust mechanism of a cooking utensil and the cooking utensil, the cooking utensil comprises an inner cover and an exhaust valve installed on the inner cover, the exhaust mechanism comprises an exhaust switch piece and a linear driving mechanism, the exhaust switch piece is connected to the inner cover in a sliding mode and corresponds to the exhaust valve in position, and the linear driving mechanism drives the exhaust switch piece to rotate. The inner cover is provided with an exhaust cavity used for containing the exhaust valve and communicated with the outside, the bottom wall of the exhaust cavity is provided with an exhaust hole communicated with the cooking cavity, the exhaust valve is installed in the exhaust cavity in a floating mode, and the linear driving mechanism comprises a fourth elastic piece arranged between the exhaust valve and the bottom wall of the exhaust cavity. The linear driving mechanism drives the exhaust switch part to be switched between the first position and the second position, the exhaust switch part abuts against the exhaust valve when located at the first position, the exhaust channel is disconnected, and when the exhaust switch part is located at the second position, the exhaust valve is reset, the exhaust channel is communicated, so that the cooking utensil exhausts and relieves pressure at any time in the cooking process. A user can open the pot cover in the cooking process.

Description

Technical Field

[0001] This utility model relates to the field of home appliances, and in particular to a venting mechanism for a cooking appliance and the cooking appliance itself. Background Technology

[0002] Cooking appliances efficiently cook food by maintaining a specific internal pressure environment. Traditional cooking appliances can only release pressure and return to normal atmospheric pressure after cooking is complete, which has several drawbacks: First, the pressure release process can only be initiated after cooking, making it impossible to open the lid during cooking and thus preventing the addition of seasonings or new ingredients, greatly limiting the flexibility and variety of cooking operations; second, high pressure remains inside the pot after cooking, and the depressurization process is time-consuming, requiring users to wait a long time before opening the lid, resulting in a poor user experience. Utility Model Content

[0003] To address the technical problem that cooking appliances can only release pressure and open their lids after cooking is complete, this invention provides a venting mechanism for cooking appliances, enabling them to release pressure and vent during cooking, allowing users to open the lid during the cooking process.

[0004] The specific technical solution of this utility model is as follows: a venting mechanism for a cooking appliance, the cooking appliance including an inner cover and a venting valve installed on the inner cover, the venting mechanism including a venting switch and a linear drive mechanism, the venting switch being slidably connected to the inner cover and corresponding to the position of the venting valve, the inner cover having a venting chamber for accommodating the venting valve and communicating with the outside, the bottom wall of the venting chamber having a venting hole communicating with the cooking chamber, the venting valve being floatingly installed in the venting chamber, the linear drive mechanism including a fourth elastic element disposed between the venting valve and the bottom wall of the venting chamber, the linear drive mechanism driving the venting switch to slide, so that the venting switch switches between a first position and a second position, the venting switch abutting against the venting valve when in the first position, so that the venting valve abuts against the bottom wall of the venting chamber and disconnects the communication between the venting hole and the venting chamber, the venting switch being in the second position, the venting valve being reset under the action of the fourth elastic element so that the venting hole communicates with the venting chamber for venting.

[0005] During cooking, the linear drive mechanism drives the exhaust switch to switch between the first and second positions, allowing the exhaust switch to slide relative to the exhaust valve. This causes the exhaust valve to abut or disengage from the bottom wall of the exhaust chamber, and the exhaust port and exhaust chamber switch back and forth between connected and disconnected states, achieving automatic adjustment and release of pressure inside the pot. Users can open the lid at any time during cooking, improving the flexibility of cooking operations. After cooking is completed, users do not need to wait a long time for the pressure to drop before opening the lid to serve the food, improving the user experience.

[0006] Preferably, the linear drive mechanism includes a sliding member that is laterally slidably connected to the inner cover, the exhaust switch member slides vertically relative to the inner cover, the laterally sliding sliding member is used to drive the exhaust switch member to switch from the second position to the first position, and the fourth elastic member is used to drive the exhaust switch member to switch from the first position to the second position.

[0007] In the above technical solution, the combination of the horizontal sliding of the sliding component and the vertical sliding of the exhaust switch component avoids excessive stacking of various structures in the vertical direction, improves the utilization rate of the inner lid space, and compacts the inner lid layout, thereby reducing the thickness of the pot lid and improving the portability of the cooking appliance.

[0008] Preferably, the reversing structure includes a first lateral bottom surface, a second lateral bottom surface, and a transition surface disposed on the slider and facing the exhaust switch. During the sliding process, the contact position between the exhaust switch and the slider switches between the first lateral bottom surface, the transition surface, and the second lateral bottom surface. The height of the first lateral bottom surface is lower than the height of the second lateral bottom surface. When the exhaust switch is in the first position, the first lateral bottom surface abuts against the exhaust switch. When the exhaust switch is in the second position, the exhaust switch abuts against the second lateral bottom surface.

[0009] In the above technical solution, when the exhaust switch contacts the first horizontal bottom surface, the exhaust valve is in the closed state; when the exhaust switch contacts the second horizontal bottom surface, the exhaust valve is in the open state. The vertical movement of the exhaust switch is achieved by utilizing the height difference between the different bottom surfaces, thereby enabling the exhaust valve to switch states. The structure is simple and easy to process. At the same time, the sliding member has a horizontal sliding tendency. The first and second horizontal bottom surfaces are horizontal planes, so when the exhaust switch contacts the first and second horizontal bottom surfaces vertically, it will not exert a horizontal component force on the sliding member, causing the sliding member to slide and resulting in the displacement of the exhaust switch. This achieves the self-locking of the exhaust switch and improves the stability and safety of cooking.

[0010] Preferably, the inner cover is provided with a through hole and an elastic seal that can be elastically deformed along the sliding direction of the exhaust switch. The elastic seal is connected to the inner cover and seals the through hole, and one end of the exhaust switch is connected to the elastic seal.

[0011] In the above technical solution, the through hole on the inner cover is sealed by the elastic element. This can prevent steam from entering the upper space of the inner cover through the through hole, which would cause the temperature of the upper space of the inner cover to be too high and affect the operation of the exhaust mechanism. At the same time, the elasticity of the elastic sealing element itself can be used to reset the exhaust switch. Two functions are achieved by one part, which can make the inner cover layout compact and reduce costs.

[0012] Preferably, the inner cover is provided with a guide portion on the sliding path of the exhaust switch component, and the guide portion guides the vertical sliding of the exhaust switch component.

[0013] In the above technical solution, a guide part is provided to provide vertical sliding guidance for the exhaust switch component, preventing circumferential movement of the exhaust switch component when switching between the first position and the second position.

[0014] Preferably, the reversing structure includes a sliding groove provided on the sliding member. The sliding groove includes a first horizontal groove, a second horizontal groove, and a transition inclined groove provided between the two. A slider adapted to the sliding groove is fixed on the exhaust switch. During the sliding process of the sliding member, the contact position between the slider and the sliding groove switches between the first horizontal groove, the transition inclined groove, and the second horizontal groove. The height of the first horizontal groove is lower than the height of the second horizontal groove. When the exhaust switch is in the first position, the first horizontal groove abuts against the exhaust switch. When the exhaust switch is in the second position, the exhaust switch abuts against the second horizontal groove. Alternatively, the reversing structure includes a slide rail fixed to the sliding member, the slide groove includes a first horizontal rail, a second horizontal rail and a transition inclined rail disposed between the two, and the exhaust switch is fixed with a sliding groove adapted to the slide rail. During the sliding process of the sliding member, the contact position between the sliding groove and the slide rail switches between the first horizontal rail, the transition inclined rail and the second horizontal rail. The height of the first horizontal rail is lower than the height of the second horizontal rail. When the exhaust switch is in the first position, the first horizontal rail abuts against the exhaust switch. When the exhaust switch is in the second position, the exhaust switch abuts against the second horizontal rail.

[0015] In the above technical solution, when the exhaust switch contacts the first horizontal groove or the first horizontal rail, the exhaust valve is in the closed state; when the exhaust switch contacts the second horizontal groove or the second horizontal rail, the exhaust valve is in the open state. The vertical movement of the exhaust switch is achieved through the height difference of the groove or the rail, thereby changing the state of the exhaust valve. The groove and the rail have a positioning function for the exhaust switch, preventing it from tilting during movement and improving the stability of the exhaust mechanism. At the same time, the sliding member has a lateral sliding tendency. The first and second horizontal grooves are horizontal grooves, and the first and second horizontal rails are horizontal rails. This ensures that when the exhaust switch slides vertically and contacts the first horizontal groove, the second horizontal groove, the first horizontal rail, and the second horizontal rail, it does not exert a horizontal force on the sliding member, causing it to slide and displace. This achieves self-locking of the exhaust switch, improving the stability and safety of cooking. In addition, the exhaust switch can slide up and down through its own structure, eliminating the need for additional structures to provide upward force, simplifying the structure and reducing costs.

[0016] Preferably, the exhaust mechanism further includes a position detection mechanism for detecting the position of the sliding member. The position detection mechanism includes a magnet and a reed switch. The magnet is disposed on the sliding member and moves synchronously with the sliding member. The reed switch is disposed on the inner cover and located near the movement trajectory of the magnet. When the sliding member drives the magnet to move, the relative position between the magnet and the reed switch changes, and the reed switch sends a signal to the controller of the linear drive mechanism.

[0017] In the above technical solution, during the sliding process of the slider, the relative position between the magnet and the reed switch changes. The reed switch sends a slider position signal to the controller according to the change in magnetic field strength, so that the controller can monitor the slider position in real time and achieve precise control of exhaust.

[0018] Preferably, the exhaust valve includes a valve seat and a valve cover. The fourth elastic element is installed between the valve seat and the bottom wall of the exhaust chamber. The valve cover is floatingly installed on the valve seat via a third elastic element. When the exhaust switch is in the first position, it abuts against the valve cover, so that the valve seat abuts against the bottom wall of the exhaust chamber and disconnects the exhaust hole from the exhaust chamber. A safety valve core is floatingly installed on the valve seat. The valve seat has a valve chamber that is always in communication with the exhaust hole. A second elastic element is provided between the safety valve core and the valve cover. An exhaust gap that is always in communication with the exhaust chamber is provided between the safety valve core and the valve cover. The safety valve core can float under the action of internal and external pressure difference to disconnect or connect the valve chamber and the exhaust gap.

[0019] In the above technical solution, the cooperation of three elastic elements in the exhaust valve allows the valve cover, safety valve core, and valve seat to flexibly construct different structures according to different pressure conditions and operational needs during cooking. In a safe state, the exhaust valve is opened and closed by the exhaust switch, and pressure is released from the pressure relief gap between the valve seat and the bottom wall of the exhaust chamber. When the pressure inside the pot exceeds the safety threshold, the exhaust valve can open automatically without the control of the exhaust switch, and pressure is released through the gap between the valve chamber and the safety valve core and the valve seat, ensuring cooking safety. There is no need to set up an additional safety valve, and the inner cover layout is compact.

[0020] Preferably, the inner cover is provided with an exhaust box, the exhaust box including an exhaust channel that is always in communication with the exhaust chamber, and the linear drive mechanism is located outside the exhaust box.

[0021] In the above technical solution, the linear drive mechanism is located outside the exhaust box, which avoids direct contact between the linear drive mechanism and high-temperature steam, and prevents the steam from damaging the linear drive mechanism.

[0022] Another specific technical solution of this utility model is: a cooking appliance, including a pot body, a pot lid and a heating device, wherein the pot lid and the pot body are combined to form a cooking cavity, and the pot lid includes an outer cover, a liner and an inner cover, wherein an exhaust valve and the above-mentioned exhaust mechanism are installed in the liner or the inner cover.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] (1) Achieve venting at any time and high stability of the venting mechanism: This device drives the venting switch to slide vertically relative to the venting valve through the lateral sliding of the sliding part in the linear drive mechanism, so that the venting valve switches back and forth between the open and closed states, thereby achieving the adjustment and release of the pressure inside the pot at any time. The reversing structure of the sliding part has multiple bottom sections with different heights. The venting switch is always in contact with the bottom of the reversing structure, achieving self-locking of the venting switch in the vertical direction and improving the stability of the venting mechanism.

[0025] (2) High safety: The exhaust valve is equipped with a safety valve core. When the pressure inside the pot exceeds the safety threshold, the safety valve core floats up under the pressure inside the cooking chamber. The exhaust gap between the valve chamber and the safety valve core and the valve cover is connected to release pressure and ensure cooking safety. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the exhaust switch component of this utility model when it is in the first position;

[0027] Figure 2 This is a schematic diagram of the exhaust switch component of this utility model when it is in the second position;

[0028] Figure 3 This is a schematic diagram of the structure of this utility model;

[0029] Figure 4 yes Figure 1 Enlarged view of a portion of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the structure of the sliding component of this utility model. Figure 1 ;

[0031] Figure 6 This is a schematic diagram of the structure of the sliding component of this utility model. Figure 2 .

[0032] The attached figures are labeled as follows: 1. Exhaust valve; 11. Valve cover; 12. Safety valve core; 13. Valve seat; 14. Second elastic element; 15. Third elastic element; 16. Fourth elastic element; 17. Exhaust chamber; 18. Valve chamber; 2. Exhaust switch; 21. Slider; 3. Linear drive mechanism; 31. Sliding element; 311. Reversing structure; 3111. First transverse bottom surface; 3112. Transition surface; 3113. Second transverse bottom surface; 3114. First transverse groove; 3115. Transition inclined groove; 3116. Second transverse groove; 312. Transmission part; 32. Motor; 4. Exhaust box; 5. Magnet; 61. Elastic seal; 62. First elastic element; 7. Reed switch; 8. Inner cover; 91. Exhaust hole; 10. Guide part. Detailed Implementation

[0033] The present invention will be further described below with reference to embodiments. Unless otherwise specified, all devices, connection structures, and methods involved in this invention are known in the art.

[0034] Example 1

[0035] Reference Figures 1 to 6 As shown, this utility model provides a venting mechanism for a cooking appliance. The cooking appliance includes a pot body, a pot lid, and a heating device. The venting mechanism is located on the pot lid, which includes an inner cover 8. An venting valve 1 is installed on the inner cover 8. The venting mechanism includes a venting switch 2 and a linear drive mechanism 3. The venting switch 2 is slidably connected to the inner cover 8 and corresponds to the position of the venting valve 1. The sliding direction of the venting switch 2 is the same as the opening and closing direction of the venting valve 1. The inner cover 8 has a venting chamber 17 for accommodating the venting valve 1 and communicating with the outside. The bottom wall of the venting chamber 17 has a vent hole communicating with the cooking chamber. The venting valve 1 floats... The linear drive mechanism 3 is installed inside the exhaust chamber 17. It includes a fourth elastic element 16 disposed between the exhaust valve 1 and the bottom wall of the exhaust chamber 17. The linear drive mechanism 3 drives the exhaust switch 2 to slide, so that the exhaust switch 2 switches between a first position and a second position. When the exhaust switch 2 is in the first position, it abuts against the exhaust valve 1, so that the exhaust valve 1 abuts against the bottom wall of the exhaust chamber 17 and disconnects the exhaust hole from the exhaust chamber 17. When the exhaust switch 2 is in the second position, the exhaust valve 1 is reset under the action of the fourth elastic element 16 so that the exhaust hole connects with the exhaust chamber 17 to exhaust.

[0036] During cooking, the linear drive mechanism 3 drives the exhaust switch 2 to switch between a first position and a second position, allowing the exhaust switch 2 to slide relative to the exhaust valve 1, thus opening and closing the exhaust valve 1. This means the exhaust valve 1 abuts against or disengages from the bottom wall of the exhaust chamber 17, and the exhaust port switches back and forth between connected and disconnected states to release pressure. Users can open the lid at any time during cooking, improving the flexibility of the cooking operation. After cooking, users do not need to wait a long time for the pressure to drop before opening the lid to serve the food, improving the user experience. This exhaust mechanism uses an electric drive, achieving fully automated control without manual operation by the user. A fourth elastic element 16 is provided to reset the exhaust valve 1. The reset of the exhaust valve 1 provides an upward force to the exhaust switch 2, causing the exhaust switch 2 to move away from the exhaust valve 1 and towards the second position.

[0037] The implementation method of this device is as follows: place the food into the pot, close the lid, select a suitable cooking mode for cooking. During the cooking process, the linear drive mechanism 3 is activated, which drives the exhaust switch 2 to slide. The exhaust switch 2 continuously presses against and disengages from the exhaust valve 1, causing the exhaust valve 1 to switch back and forth between the open and closed states, thereby realizing the automatic adjustment and release of the pressure inside the pot. After cooking is completed, the linear drive mechanism 3 can be activated again according to the preset program or user instructions to keep the exhaust valve 1 in the open state, accelerate the release of pressure inside the pot, so that the user can safely open the lid and take out the cooked food in a short time.

[0038] Example 2

[0039] Based on Example 1, refer to Figures 1 to 5As shown, this utility model provides a venting mechanism for a cooking appliance. A venting switch 2 is located above a venting valve 1. The venting switch 2 slides vertically relative to the inner cover 8 and the venting valve 1. The inner cover 8 between the venting switch 2 and the venting valve 1 has a through hole for the lower end of the venting switch 2 to pass through. An elastic sealing member 61 is provided between the venting switch 2 and the inner cover 8. The elastic sealing member 61 is fixed to the inner cover 8 and seals the through hole. The lower end of the venting switch 2 is connected to the elastic sealing member 61. Connecting blocks are provided around the venting switch 2. The inner cover 8 has a guide part 10 on the sliding path of the venting switch 2. The guide part 10 abuts against the connecting blocks, limiting the position of the venting switch 2 and providing vertical guidance. A first elastic member 62 is connected between the bottom surface of the connecting block and the inner cover 8. The elastic seal 61 and the first elastic element 62 further exert an upward force on the exhaust switch 2, causing the exhaust switch 2 to tend to move away from the exhaust valve 1. When the exhaust switch 2 is in the first position, the elastic seal 61, the first elastic element 62, and the fourth elastic element 16 deform, and the lower end of the exhaust switch 2 extends into the through hole and abuts against the top surface of the exhaust valve 1 through the elastic seal 61. When the exhaust switch 2 is in the second position, the first elastic element 62, the elastic seal 61, and the fourth elastic element 16 push the exhaust switch 2 to slide upward, so that the exhaust switch 2 disengages from the exhaust valve 1 and switches from the first position to the second position. It is understood that in other embodiments, only the elastic seal 61 or the first elastic element 62 is provided to facilitate the movement of the exhaust switch 2 away from the exhaust valve 1, or the exhaust switch 2 is pushed upward by the elastic force of the fourth elastic element 16, without additional structures.

[0040] In this embodiment, an elastic seal 61 and a first elastic element 62 are provided, enabling the exhaust switch 2 to quickly move away from the exhaust valve 1 when switching from the first position to the second position, thereby improving the pressure relief efficiency. The two elements work together to improve the sliding stability of the exhaust switch 2. Furthermore, the elastic seal 61 seals the through-hole on the inner cover 8, preventing vapor from entering the upper space of the inner cover 8 through the through-hole, which would cause excessively high temperatures in the upper space of the inner cover 8, affecting the operation of the exhaust mechanism. A guide portion 10 is provided to restrict the circumferential movement of the exhaust switch 2 when switching between the first and second positions.

[0041] The linear drive mechanism 3 includes a controller, a motor 32, a gear, and a slider 31. The output shaft of the motor 32 is fixed to the gear. The slider 31 is laterally slidably connected to the inner cover 8. A rack is fixed on the slider 31. The gear meshes with the rack. The controller controls the start and stop of the motor 32. The motor 32 drives the slider 31 to slide back and forth laterally. The sliding member 31 is provided with a reversing structure 311, which drives the exhaust switch member 2 to slide downward, switching from a second position to a first position. The reversing structure 311 includes a first transverse bottom surface 3111, a second transverse bottom surface 3113, and a transition surface 3112 between the two, all located on the sliding member 31 and facing the exhaust switch member 2. During the sliding process, the contact position between the exhaust switch member 2 and the sliding member 31 switches between the first transverse bottom surface 3111, the transition surface 3112, and the second transverse bottom surface 3113. The height of the first transverse bottom surface 3111 is lower than the height of the second transverse bottom surface 3113. When the exhaust switch member 2 is in the first position, the first transverse bottom surface 3111 abuts against the exhaust switch member 2; when the exhaust switch member 2 is in the second position, the exhaust switch member 2 abuts against the second transverse bottom surface 3113. The inner cover 8 is provided with an exhaust box 4, which includes an exhaust channel that is always in communication with the exhaust chamber 17. The linear drive mechanism 3 is located outside the exhaust box 4. Understandably, in another embodiment, the linear drive mechanism includes an electric push rod that is vertically slidably connected to the inner cover. The electric push rod is connected to the exhaust switch. The vertically sliding electric push rod drives the exhaust switch to move vertically, causing the exhaust switch to switch between a first position and a second position, thereby opening and closing the exhaust valve. There is no need to provide a fourth elastic element to assist the exhaust switch to the second position.

[0042] In this embodiment, when the exhaust switch 2 contacts the first horizontal bottom surface 3111, the exhaust valve 1 is in a closed state; when the exhaust switch 2 contacts the second horizontal bottom surface 3113, the exhaust valve 1 is in an open state. The vertical movement of the exhaust switch 2 is achieved by utilizing the height difference between the different bottom surfaces, thereby enabling the exhaust valve 1 to switch states. This design is simple in structure and easy to manufacture. Simultaneously, the sliding member 31 exhibits a horizontal sliding tendency. Since the first horizontal bottom surface 3111 and the second horizontal bottom surface 3113 are horizontal planes, when the exhaust switch 2 slides vertically and contacts the first and second horizontal bottom surfaces 3111, it does not exert a horizontal force on the sliding member 31, preventing it from sliding and causing the exhaust switch 2 to displace. This achieves self-locking of the exhaust switch 2, improving the stability and safety of cooking. The combination of the horizontal sliding of the sliding member 31 and the vertical sliding of the exhaust switch 2 avoids excessive stacking of structures in a single direction, improving the utilization rate of the inner lid 8 space, resulting in a compact inner lid 8 layout, reducing the thickness of the lid, and enhancing the portability of the cooking appliance. The linear drive mechanism 3 is located outside the exhaust box 4, which avoids direct contact between the linear drive mechanism 3 and high-temperature steam, thus preventing the steam from damaging the linear drive mechanism 3.

[0043] Furthermore, the exhaust mechanism also includes a position detection mechanism for detecting the position of the sliding member 31. The position detection mechanism includes a magnet 5 and a reed switch 7. The magnet 5 is disposed on the sliding member 31 and moves synchronously with the sliding member 31. The reed switch 7 is disposed on the inner cover 8 and is located near the movement trajectory of the magnet 5. When the sliding member 31 drives the magnet 5 to move, the relative position between the magnet 5 and the reed switch 7 changes. The reed switch 7 sends a signal to the controller of the linear drive mechanism 3 according to the change in magnetic field strength, so that the controller can monitor the position of the sliding member 31 in real time and achieve precise control of the exhaust.

[0044] Furthermore, the exhaust valve 1 includes a valve seat 13 and a valve cover 11. A fourth elastic element 16 is installed between the valve seat 13 and the bottom wall of the exhaust chamber 17. The valve cover 11 is floatingly installed on the valve seat 13 through a third elastic element 15. When the exhaust switch 2 is in the first position, it abuts against the valve cover 11, so that the valve seat 13 abuts against the bottom wall of the exhaust chamber 17 and disconnects the communication between the exhaust hole and the exhaust chamber 17. A safety valve core 12 is floatingly installed on the valve seat 13. The valve seat 13 is provided with a valve chamber 18 that is always in communication with the exhaust hole. A second elastic element 14 is provided between the safety valve core 12 and the valve cover 11. An exhaust gap that is always in communication with the exhaust chamber 17 is provided between the safety valve core 12 and the valve cover 11. The safety valve core 12 can float under the action of the internal and external pressure difference so that the valve chamber 18 is disconnected or connected with the exhaust gap. Through the cooperation of the three elastic elements in the exhaust valve 1, the valve cover 11, safety valve core 12 and valve seat 13 can be flexibly constructed with different structures according to different pressure conditions and operational needs during cooking. In a safe state, the exhaust valve 1 is opened and closed by the exhaust switch 2, and pressure is released from the pressure relief gap between the valve seat 13 and the bottom wall of the exhaust chamber 17. When the pressure inside the pot exceeds the safety threshold, the exhaust valve 1 can open on its own without the control of the exhaust switch 2, and pressure is released through the valve chamber 18 and the gap between the safety valve core 12 and the valve seat 13, ensuring cooking safety, and eliminating the need for an additional safety valve, resulting in a compact inner cover 8 layout.

[0045] The implementation of this device is as follows: food is placed in the pot, the lid is closed, and a suitable cooking mode is selected for cooking. During the cooking process, the linear drive mechanism 3 starts operating, and the controller controls the motor 32 to start. The motor 32 drives the gear fixedly connected to it to rotate synchronously. The rotation of the gear causes the rack to move linearly, which in turn causes the sliding member 31 to slide laterally on the inner lid 8. The contact position between the exhaust switch 2 and the sliding member 31 switches between the first horizontal bottom surface 3111, the transition surface 3112, and the second horizontal bottom surface 3113, so that the exhaust valve 1 switches between the open and closed states. The position detection mechanism sends the position signal of the sliding member 31 to the controller in real time to realize the automatic adjustment and release of the pressure inside the pot. After cooking, the linear drive mechanism 3 can be restarted according to the preset program or user instructions to keep the exhaust valve 1 open and accelerate the release of the pressure inside the pot so that the user can safely open the lid and take out the cooked food in a short time.

[0046] Example 3

[0047] Based on Example 1, refer to Figure 6As shown, this utility model provides an exhaust mechanism for a cooking appliance. The linear drive mechanism 3 includes a controller, a motor 32, a gear, and a sliding member 31. The output shaft of the motor 32 is fixed to the gear. The sliding member 31 is laterally slidably connected to the inner cover 8. A rack is fixed on the sliding member 31, and the gear meshes with the rack. The controller controls the start and stop of the motor 32, and the motor 32 drives the sliding member 31 to slide back and forth laterally. The sliding member 31 is provided with a reversing structure 311, which drives the exhaust switch 2 to slide vertically. The reversing structure 311 includes a groove provided on the sliding member 31. The groove includes a first horizontal... The exhaust switch 2 has a groove 3114, a second transverse groove 3116, and a transition inclined groove 3115 between them. A slider 21 adapted to the groove is fixed on the exhaust switch 2. During the sliding process of the slider 31, the contact position between the slider 21 and the groove switches between the first transverse groove 3114, the transition inclined groove 3115, and the second transverse groove 3116. The height of the first transverse groove 3114 is lower than the height of the second transverse groove 3116. When the exhaust switch 2 is in the first position, the first transverse groove 3114 abuts against the exhaust switch 2. When the exhaust switch 2 is in the second position, the exhaust switch 2 abuts against the second transverse groove 3116. When the exhaust switch 2 contacts the first horizontal groove 3114, the exhaust valve 1 is in the closed state; when the exhaust switch 2 contacts the second horizontal groove 3116, the exhaust valve 1 is in the open state. The vertical movement of the exhaust switch 2 is achieved through the height difference of the sliding groove, thereby changing the state of the exhaust valve 1. The sliding groove has a positioning function for the exhaust switch 2, preventing it from tilting during movement and improving the stability of the exhaust mechanism. At the same time, the sliding member 31 has a lateral sliding tendency. The first horizontal groove 3114 and the second horizontal groove 3116 are horizontal grooves, so when the exhaust switch 2 slides vertically and contacts the first horizontal groove 3114 and the second horizontal groove 3116, it will not exert a horizontal component force on the sliding member 31, causing the sliding member 31 to slide and resulting in the displacement of the exhaust switch 2. This achieves the self-locking of the exhaust switch 2, improving the stability and safety of cooking. In addition, the exhaust switch 2 can slide up and down through its own structure, without the need for other structures to provide upward force, simplifying the structure and reducing costs.

[0048] In another embodiment, the reversing structure 311 includes a slide rail fixed to the sliding member 31. The slide groove includes a first horizontal rail, a second horizontal rail, and a transition inclined rail disposed between the two. The exhaust switch member 2 is fixed with a sliding groove adapted to the slide rail. During the sliding process of the sliding member 31, the contact position between the sliding groove and the slide rail switches between the first horizontal rail, the transition inclined rail, and the second horizontal rail. The height of the first horizontal rail is lower than the height of the second horizontal rail. When the exhaust switch member 2 is in the first position, the first horizontal rail abuts against the exhaust switch member 2. When the exhaust switch member 2 is in the second position, the exhaust switch member 2 abuts against the second horizontal rail. When the exhaust switch 2 contacts the first horizontal rail, the exhaust valve 1 is in the closed state; when the exhaust switch 2 contacts the second horizontal rail, the exhaust valve 1 is in the open state. The vertical movement of the exhaust switch 2 is achieved through the height difference of the slide rails, thereby changing the state of the exhaust valve 1. The slide rails have a positioning function for the exhaust switch 2, preventing it from tilting during movement and improving the stability of the exhaust mechanism. At the same time, the sliding member 31 has a lateral sliding tendency. The first and second horizontal rails are horizontal grooves, ensuring that when the exhaust switch 2 slides vertically and contacts the first and second horizontal rails, it does not exert a horizontal force on the sliding member 31, causing it to slide and resulting in displacement of the exhaust switch 2. This achieves self-locking of the exhaust switch 2, improving the stability and safety of cooking. In addition, the exhaust switch 2 can slide up and down through its own structure, eliminating the need for additional structures to provide upward force, simplifying the structure and reducing costs.

[0049] Example 4

[0050] This utility model provides a cooking appliance, including a pot body, a pot lid and a heating device. The pot lid and the pot body are combined to form a cooking cavity. The pot lid includes an outer cover, a liner and an inner cover 8. An exhaust valve 1 is installed in the inner cover 8, and the exhaust mechanism in the above embodiment 1 is installed in the liner or the inner cover 8.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An exhaust mechanism of a cooking appliance comprising an inner cover (8) and an exhaust valve (1) mounted to the inner cover (8), characterized in that, The exhaust mechanism comprises an exhaust switch member (2) and a linear driving mechanism (3), the exhaust switch member (2) is slidingly connected to an inner cover (8) and corresponds to the position of an exhaust valve (1), the inner cover (8) is provided with an exhaust cavity (17) for accommodating the exhaust valve (1) and communicating with the outside, the bottom wall of the exhaust cavity (17) is provided with an exhaust hole communicating with the cooking cavity, the exhaust valve (1) is floatingly installed in the exhaust cavity (17), the linear driving mechanism (3) comprises a fourth elastic member (16) arranged between the exhaust valve (1) and the bottom wall of the exhaust cavity (17), the linear driving mechanism (3) drives the exhaust switch member (2) to slide, so as to switch the exhaust switch member (2) between a first position and a second position, when the exhaust switch member (2) is in the first position, it abuts against the exhaust valve (1), so that the exhaust valve (1) abuts against the bottom wall of the exhaust cavity (17) to disconnect the communication between the exhaust hole and the exhaust cavity (17), when the exhaust switch member (2) is in the second position, the exhaust valve (1) is reset under the action of the fourth elastic member (16) to make the exhaust hole communicate with the exhaust cavity (17) for exhaust.

2. The exhaust mechanism of a cooking appliance according to claim 1, characterized in that, The linear driving mechanism (3) comprises a slider (31) slidingly connected to the inner cover (8), the slider (31) is provided with a reversing structure (311), the exhaust switch member (2) vertically slides relative to the inner cover (8), the horizontally sliding slider (31) is used to drive the exhaust switch member (2) to switch from the second position to the first position, and the fourth elastic member (16) is used to drive the exhaust switch member (2) to switch from the first position to the second position.

3. The exhaust mechanism of a cooking appliance according to claim 2, characterized in that, The reversing structure (311) comprises a first horizontal bottom surface (3111), a second horizontal bottom surface (3113) and a transition surface (3112) arranged between the two, the first horizontal bottom surface (3111) is arranged on the slider (31) and faces the exhaust switch member (2), the contact position of the exhaust switch member (2) and the slider (31) switches between the first horizontal bottom surface (3111), the transition surface (3112) and the second horizontal bottom surface (3113) during the sliding process of the slider (31), the height of the first horizontal bottom surface (3111) is lower than the height of the second horizontal bottom surface (3113), when the exhaust switch member (2) is in the first position, the first horizontal bottom surface (3111) abuts against the exhaust switch member (2), and when the exhaust switch member (2) is in the second position, the exhaust switch member (2) abuts against the second horizontal bottom surface (3113).

4. The exhaust mechanism of a cooking appliance according to claim 3, wherein The inner cover (8) is provided with a through hole and an elastic sealing member (61) capable of elastically deforming along the sliding direction of the exhaust switch member (2), the elastic sealing member (61) is connected to the inner cover (8) and seals the through hole, and one end of the exhaust switch member (2) is connected to the elastic sealing member (61).

5. The exhaust mechanism of a cooking appliance according to claim 2, wherein The inner cover (8) is provided with a guide portion (10) on the sliding path of the exhaust switch member (2), and the guide portion (10) guides the vertical sliding of the exhaust switch member (2).

6. The exhaust mechanism of a cooking appliance according to claim 2, wherein The reversing structure (311) comprises a sliding groove provided on the sliding member (31), the sliding groove comprises a first horizontal groove (3114), a second horizontal groove (3116) and a transition inclined groove (3115) provided between the two, the exhaust switch member (2) is fixed with a sliding block (21) matched with the sliding groove, during the sliding of the sliding member (31), the contact position of the sliding block (21) and the sliding groove switches between the first horizontal groove (3114), the transition inclined groove (3115) and the second horizontal groove (3116), the height of the first horizontal groove (3114) is lower than the height of the second horizontal groove (3116), when the exhaust switch member (2) is in the first position, the first horizontal groove (3114) abuts against the exhaust switch member (2), when the exhaust switch member (2) is in the second position, the exhaust switch member (2) abuts against the second horizontal groove (3116); or, the reversing structure (311) comprises a sliding rail fixed on the sliding member (31), the sliding groove comprises a first horizontal rail, a second horizontal rail and a transition inclined rail provided between the two, the exhaust switch member (2) is fixed with a sliding groove matched with the sliding rail, during the sliding of the sliding member (31), the contact position of the sliding groove and the sliding rail switches between the first horizontal rail, the transition inclined rail and the second horizontal rail, the height of the first horizontal rail is lower than the height of the second horizontal rail, when the exhaust switch member (2) is in the first position, the first horizontal rail abuts against the exhaust switch member (2), when the exhaust switch member (2) is in the second position, the exhaust switch member (2) abuts against the second horizontal rail.

7. The exhaust mechanism of a cooking appliance according to claim 2, wherein The exhaust mechanism further comprises a position detection mechanism for detecting the position of the sliding member (31), the position detection mechanism comprises a magnet (5) and a reed switch (7), the magnet (5) is provided on the sliding member (31), the magnet (5) displaces synchronously with the sliding member (31), the reed switch (7) is provided on the inner cover (8) and located near the movement track of the magnet (5), when the sliding member (31) drives the magnet (5) to move, the relative position between the magnet (5) and the reed switch (7) changes, the reed switch (7) sends a signal to the controller of the linear driving mechanism (3).

8. The exhaust mechanism of a cooking appliance according to claim 1, characterized in that, The exhaust valve (1) comprises a valve seat (13) and a valve cover (11), the fourth elastic member (16) is installed between the valve seat (13) and the bottom wall of the exhaust cavity (17), the valve cover (11) is floatingly installed on the valve seat (13) through the third elastic member (15), the exhaust switch member (2) is abutted on the valve cover (11) when in the first position, so that the valve seat (13) is abutted on the bottom wall of the exhaust cavity (17) to disconnect the communication between the exhaust hole and the exhaust cavity (17), the safety valve core (12) is floatingly installed on the valve seat (13), the valve seat (13) is provided with a valve cavity (18) which is always communicated with the exhaust hole, the second elastic member (14) is arranged between the safety valve core (12) and the valve cover (11), the safety valve core (12) and the valve cover (11) are provided with an exhaust gap which is always communicated with the exhaust cavity (17), and the safety valve core (12) can float under the action of the internal and external pressure difference to disconnect or communicate the valve cavity (18) and the exhaust gap.

9. The exhaust mechanism of a cooking appliance according to any one of claims 1 to 8, characterized in that, The inner cover (8) is provided with an exhaust box (4), the exhaust box (4) comprises an exhaust passage which is always communicated with the exhaust cavity (17), and the linear driving mechanism (3) is located outside the exhaust box (4).

10. A cooking appliance comprising a pot body, a pot cover and a heating device, the pot cover and the pot body combine to form a cooking cavity, characterized in that, The pot cover comprises an outer cover, a lining cover and an inner cover (8), the inner cover (8) is provided with the exhaust valve (1), and the lining cover or the inner cover (8) is provided with the exhaust mechanism in any one of claims 1 to 9.

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