Cookware lid assembly and cookware

Abstract

To provide a lid body assembly for a cooking device that can secure stability and reliability of pressure regulating.SOLUTION: A lid body assembly includes: a lid body provided with a pressure regulating passage; and a pressure regulating valve 35 installed to the pressure regulating passage. A pressure is added to the pressure regulating valve so as to regulate an obstruction pressure to the pressure regulating passage from the pressure regulating valve. A screw structure is provided to an output end of a motor 31 of a pressure regulating drive module, a raising / lowering compression rod 33 is installed to the lid body so as to be movable, the motor moves the raising / lowering compression rod in a direction of approaching or separating from the pressure regulating valve to add the pressure to the pressure regulating valve to regulate the obstruction pressure of the pressure regulating valve with respect to the pressure regulating passage. The pressure is directly added to the pressure regulating valve to enhance accuracy of the lid body assembly when regulating the pneumatic pressure of a cooking device.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This application relates to the technical field of cooking appliances, and in particular, to a lid assembly and a cooking utensil of a cooking appliance.

Background Art

[0002] Conventional cooking utensils with adjustable pressure often have a device for adjusting cooking pressure composed of a power component, a two-stage or multi-stage transmission component, and an execution component. However, if there are too many combinations of transmission components, the accuracy of pressure adjustment will be low, making it difficult for the cooking utensil to adapt to the optimal cooking pressure according to different foods. Furthermore, inappropriate pressure may be used to overcook rice or grains.

Summary of the Invention

Problems to be Solved by the Invention

[0003] This application provides a lid assembly and a cooking utensil of a cooking appliance to solve the above technical problems or at least partially solve the above technical problems.

Means for Solving the Problems

[0004] A first aspect of this application is a lid body provided with a pressure adjustment passage, wherein a pressure adjustment valve for closing or opening the pressure adjustment passage is provided in the pressure adjustment passage. The lid body is provided with a pressure adjustment driving module corresponding to the pressure adjustment valve for applying pressure to the pressure adjustment valve to adjust the closing pressure of the pressure adjustment valve with respect to the pressure adjustment passage. The pressure adjustment driving module includes a motor and a lifting and pressurizing rod. A screw structure is provided at the output end of the motor. The lifting rod is movably provided on the lid body and is screwed to the screw structure. The motor moves the lifting and pressurizing rod in a direction approaching or separating from the pressure adjustment valve, and the lifting and pressurizing rod applies pressure to the pressure adjustment valve, providing a lid assembly of a cooking appliance.

[0005] In the cookware lid assembly provided by this application, a pressure regulating passage is provided in the lid body, a pressure regulating valve is provided in the pressure regulating passage for closing or opening the pressure regulating passage, and a pressure regulating drive module is provided in the lid body corresponding to the pressure regulating valve and applies pressure to the pressure regulating valve to adjust the closing pressure of the pressure regulating valve with respect to the pressure regulating passage. This controls the value of the gas pressure inside the cookware. Here, the pressure regulating drive module comprises a motor and a lifting and lowering pressurizing rod, a screw structure is provided at the output end of the motor, the lifting and lowering pressurizing rod is movably provided in the lid body and is screwed into the screw structure, the motor moves the lifting and lowering pressurizing rod in a direction toward or away from the pressure regulating valve, and the lifting and lowering pressurizing rod applies pressure to the pressure regulating valve. This adjusts the closing pressure of the pressure regulating valve with respect to the pressure regulating passage. The torque output by the motor drives the lifting and lowering pressurizing rod to move through the screw fitting and directly applies pressure to the pressure regulating valve. This reduces the number of transmission components involved in the transmission of motor output power to the pressure regulating valve, improving the accuracy with which the lid assembly adjusts the air pressure in the cooking chamber via the pressure regulating valve. Furthermore, by applying pressure to the pressure regulating valve through the movement of the lifting and lowering pressurizing rod, the directions of motion of the lifting and lowering pressurizing rod and the pressure regulating valve coincide, effectively ensuring a balance of the force acting on the pressure regulating valve by the lifting and lowering pressurizing rod, thereby ensuring the stability and reliability of pressure regulation through the cooperation of the pressure regulating drive module and the pressure regulating valve.

[0006] In some embodiments, a screw shaft is fixedly connected to the motor shaft of the motor, and the screw structure is formed on the outer circumferential surface of the screw shaft.

[0007] In some embodiments, the lid body is provided with a lifting guide hole, the lifting pressure rod is movably provided in the lifting guide hole, the lifting guide hole is provided corresponding to the pressure regulating valve, the lifting pressure rod moves along the lifting guide hole, passes through the lifting guide hole and applies pressure to the pressure regulating valve.

[0008] In some embodiments, a first stopper portion is provided on the side of the lifting pressure rod, and a second stopper portion is provided on the inner wall of the lifting guide hole. The first and second stopper portions are fitted together to fix their position and restrict the lifting pressure rod from rotating together with the motor.

[0009] In some embodiments, the first stopper portion is a stopper projection provided on the side of the lifting pressure rod, and the second stopper portion is a stopper groove provided on the inner wall of the lifting guide hole, the stopper groove extending along the axial direction of the lifting guide hole, and the stopper projection being inserted into the stopper groove and slidably connected to the stopper groove.

[0010] In some embodiments, a vertical stopper portion is provided on the side of the lifting pressure rod, located at one end of the lifting pressure rod away from the pressure regulating valve. When the lifting pressure rod moves to a set position toward the pressure regulating valve, the vertical stopper portion abuts against the lid body, preventing the lifting pressure rod from disengaging from the motor's screw structure.

[0011] In some embodiments, the lid body comprises a front lid and a back lid connected to the front lid, the pressure adjustment drive module is provided on the front lid, the back lid is provided with a mounting through hole corresponding to the lifting pressure rod, the mounting through hole is provided with a pressure adjustment seal member connected to a region of the back lid located around the mounting through hole and covering the mounting through hole, the pressure adjustment seal member is located between the lifting pressure rod and the pressure adjustment valve, and the pressure adjustment seal member is configured to elastically deform in response to the pressure action of the lifting pressure rod to apply pressure to the pressure adjustment valve.

[0012] In some embodiments, the lid body further comprises a movable lid body that is detachably attached to the rear lid on the side opposite to the front lid, and the pressure regulating passage and the pressure regulating valve are provided on the movable lid body.

[0013] In some embodiments, the pressure regulating seal member comprises a pressure block portion and an arm portion connected to the edge of the pressure block portion, wherein the pressure block portion is provided opposite the lifting pressure rod and the pressure regulating valve, the lifting pressure rod applies pressure to the pressure regulating valve via the pressure block portion, and the arm portion is configured to elastically deform when the lifting pressure rod applies pressure to the pressure block portion.

[0014] In some embodiments, the height of the pressure block portion along the direction of movement of the lifting pressure rod is greater than the movement stroke of the lifting pressure rod, and / or the ratio of the area of ​​the end face of the pressure block portion that contacts the lifting pressure rod to the area of ​​the end face of the lifting pressure rod that contacts the pressure block portion is 0.6 or more.

[0015] In some embodiments, the arm portion comprises a first edge bending portion and a second edge bending portion, the second edge bending portion being provided surrounding the pressure block portion and connected to the edge portion of the pressure block portion, the first edge bending portion being connected to the edge portion of the second edge bending portion having an angle with the edge portion of the second edge bending portion away from the pressure block portion, and the other edge portion being connected to the region of the back cover located around the mounting through hole.

[0016] In some embodiments, the length ratio of the first edge bending portion to the second edge bending portion is 0.7 to 0.95.

[0017] In some embodiments, the surface lid is provided with a mounting groove formed inward toward the back lid, the lifting pressure rod is movably mounted within the mounting groove, and the motor is fixedly connected to the inner groove wall of the mounting groove.

[0018] In some embodiments, the lid body comprises a front lid and a back lid connected to the front lid, and the pressure adjustment drive module is provided on the back lid.

[0019] In some embodiments, the pressure adjustment driving module further includes a first microswitch and a second microswitch, a switch trigger portion is provided on the lifting and pressurizing rod, and the switch trigger portion triggers the operation of the first microswitch when the lifting and pressurizing rod moves to a first position in a direction approaching the pressure adjustment valve, and is configured to trigger the operation of the second microswitch when the lifting and pressurizing rod moves to a second position in a direction away from the pressure adjustment valve.

[0020] A second aspect of the present application provides a cooking appliance including a main body and a lid assembly of the cooking appliance according to any one of the above, which is provided on the main body in an openable and closable manner.

Brief Description of the Drawings

[0021] The drawings in this specification are incorporated into this specification and form a part of this specification, showing embodiments that conform to the present application, and are used to interpret the principles of the present application together with this specification.

[0022] Hereinafter, in order to more clearly explain the embodiments of the present application or the technical solutions of the prior art, the drawings necessary for the description of the embodiments or the prior art will be briefly described. However, it is obvious to those skilled in the art that other drawings can also be obtained from these drawings without creative labor.

[0023] [Figure 1] It is a structural schematic diagram of a cooking appliance according to an embodiment of the present application. [Figure 2] It is a cross-sectional view of a cooking appliance according to an embodiment of the present application. [Figure 3] It is a first figure of a cross-sectional view of a lid assembly according to an embodiment of the present application. [Figure 4] It is an enlarged partial structure view of the structure shown in FIG. 3. [Figure 5] It is a plan view of a lid assembly according to an embodiment of the present application. [Figure 6] It is a second figure of a cross-sectional view of a lid assembly according to an embodiment of the present application. [Figure 7]It is a structural schematic diagram of the lifting and pressurizing rod according to an embodiment of the present application. [Figure 8] It is an exploded view of the pressure adjustment drive module according to an embodiment of the present application. [Figure 9] It is a structural schematic diagram of the pressure adjustment seal member according to an embodiment of the present application applying pressure to the pressure adjustment valve to block the pressure adjustment passage. [Figure 10] It is a structural schematic diagram of the pressure adjustment valve according to an embodiment of the present application opening the pressure adjustment passage. [Figure 11] It is a cross-sectional structural schematic diagram of the pressure adjustment seal member according to an embodiment of the present application.

Mode for Carrying Out the Invention

[0024] In order to more clearly understand the above objects, features and advantages of the present application, the aspects of the present application will be further described below. Note that the embodiments and features in the embodiments of the present application can be combined with each other as long as they do not conflict.

[0025] In order to facilitate a full understanding of the present application, many specific details are described in the following description. However, the present application may be implemented in other ways different from those described in this specification. It is clear that the embodiments in this specification are only some embodiments of the present application and not all embodiments.

[0026] As shown in FIGS. 1 to 11, an embodiment of the present application provides a lid assembly including a lid body 1 and a pressure adjustment drive module. A pressure adjustment passage 36 is provided in the lid body 1, and a pressure adjustment valve 35 for closing or opening the pressure adjustment passage 36 is provided in the pressure adjustment passage 36. The pressure adjustment drive module is provided on the lid body 1 corresponding to the pressure adjustment valve 35, and is for applying pressure to the pressure adjustment valve 35 to adjust the closing pressure of the pressure adjustment valve 35 with respect to the pressure adjustment passage 36.

[0027] Specifically, different foods need to be cooked at different cooking pressures to achieve the desired cooking effect. By installing a pressure adjustment drive module in the lid body 1, the pressure adjustment drive module applies different pressures to the pressure adjustment valve 35, thereby achieving the objective of cooking at different pressures depending on the type of food. Specifically, during cooking in the cooking appliance, if the temperature inside the cooking chamber 21 continues to rise, the water inside the cooking chamber 21 evaporates into steam and the gas continues to expand, causing the air pressure inside the cooking appliance to continue to rise. If the gas pressure inside the cooking appliance is greater than the closing pressure of the pressure adjustment valve 35 relative to the pressure adjustment passage 36, the pressure adjustment valve 35 opens the pressure adjustment passage 36, and some of the gas inside the cooking chamber 21 is discharged from the cooking chamber 21 through the pressure adjustment passage 36, causing the gas pressure inside the cooking chamber 21 to decrease and release pressure. If the gas pressure inside the cooking appliance is less than the closing pressure of the pressure adjustment valve 35 relative to the pressure adjustment passage 36, the pressure adjustment valve 35 closes the pressure adjustment passage 36, and the gas pressure inside the cooking chamber 21 gradually rises due to the effect of temperature. In this way, the pressure applied to the pressure regulating valve 35 by the pressure regulating drive module controls the gas pressure in the cooking chamber 21 within a preset pressure range, thereby achieving the objective of cooking different foods at the appropriate pressure.

[0028] Here, the pressure regulating drive module comprises a motor 31 and a lifting and lowering pressure rod 33. A threaded structure is provided at the output end of the motor 31, and the lifting and lowering pressure rod 33 is movably mounted on the lid body 1 and is screwed into the threaded structure. The motor 31 moves the lifting and lowering pressure rod 33 in a direction toward or away from the pressure regulating valve 35, and the lifting and lowering pressure rod 33 applies pressure to the pressure regulating valve 35.

[0029] In other words, a screw connection is used to connect the motor 31 and the lifting pressure rod 33. The driving force of the motor 31 drives the lifting pressure rod 33 to move via the screw connection, thereby applying pressure to the pressure regulating valve 35. The torque output from the motor 31 drives the lifting pressure rod 33 to move via the screw connection, directly applying pressure to the pressure regulating valve 35. This reduces the number of transmission members in the process of transmitting the output power of the motor 31 to the pressure regulating valve 35, improving the accuracy with which the lid assembly adjusts the air pressure in the cooking chamber 21 via the pressure regulating valve 35, and improving the texture of the cooked food.

[0030] Furthermore, by using the pressure adjustment drive module in the above embodiment of this application with pressure-adjustable cooking appliances, especially those used for cooking at low pressure (30 kPa or less), the accuracy of pressure adjustment can be effectively improved. By controlling the error in pressure adjustment accuracy to 5 kPa or less, the objective of precise pressure control according to the type of food can be achieved, thereby effectively improving the texture of the cooked food.

[0031] More specifically, optionally, a screw thread may be provided on the outer circumference of the output end of the motor 31, and a mounting screw hole 331 may be provided at one end of the lifting pressure rod 33 for connection to the output end of the motor 31, so that the output end of the motor 31 is screwed into the mounting screw hole 331 of the lifting pressure rod 33. Of course, optionally, a screw shaft 32 may be fixedly connected to the output end of the motor 31, a screw thread may be provided on the outer circumference of the screw shaft 32, and optionally, a mounting screw hole 331 may be provided on the lifting pressure rod 33, so that the motor 31 is screwed to the lifting pressure rod 33 by the screw shaft 32. When the screw shaft 32 is rotationally driven by the motor 31, the screw engagement between the screw shaft 32 and the lifting pressure rod 33 drives the lifting pressure rod 33 to move along the lifting guide hole 13 in a direction toward or toward the pressure regulating valve 35.

[0032] A method is used in which pressure is applied to the pressure regulating valve 35 by the movement of the lifting and pressing rod 33. By selectively installing the lifting and pressing rod 33 and the pressure regulating valve 35 opposite each other, the direction of movement of the lifting and pressing rod 33 is set to approach or move away from the pressure regulating valve 35. This ensures that the pressure regulating valve 35 does not shift due to the pressure of the lifting and pressing rod 33, and effectively balances the force acting on the pressure regulating valve 35, thereby ensuring the stability and reliability of pressure regulation through the cooperation of the pressure regulating drive module and the pressure regulating valve 35.

[0033] Specifically, the pressure regulating valve 35 may optionally be provided on the side of the lid body 1 closer to the cooking chamber 21. When the output end of the motor 31 rotates, the screw fitting drives the lifting pressure rod 33 to move toward or away from the pressure regulating valve 35. Optionally, the lid body 1 may be provided with a lifting guide hole, into which the lifting pressure rod 33 is inserted, allowing it to move along the axis of the lifting guide hole. Optionally, the lifting pressure rod 33 may be a rectangular rod, and the lifting guide hole in the lid body 1 may be a rectangular through-hole that fits the dimensions of the lifting pressure rod 33, and after the lifting pressure rod 33 is inserted into the lifting guide hole in the lid body 1, the lifting pressure rod 33 may not rotate with the output end of the motor 31 even when the output end of the motor 31 rotates. This creates relative rotation between the output end of the motor 31 and the lifting pressure rod 33, and the screw between the output end of the motor 31 and the lifting pressure rod 33 allows the lifting pressure rod 33 to be driven to move along the axis of the lifting guide hole of the lid body 1.

[0034] Of course, selectively, the lifting pressure rod 33 may be a cylindrical rod, and a circular lifting guide hole 13 may be provided in the lid body 1, so that the lifting pressure rod 33 passes through the lifting guide hole 13 and is movably connected to the lifting guide hole 13. A projection extending in the direction of the axis of the lifting guide hole 13 is provided on the side of the lifting pressure rod 33, and a groove extending in the direction of the axis of the lifting guide hole 13 is provided on the inner wall of the lifting guide hole 13. After the projection is inserted into the groove, the projection becomes movable in the direction of the axis of the lifting guide hole 13 within the groove, so that the fitting of the projection and the groove does not affect the movement of the lifting pressure rod 33 along the axis of the lifting guide hole 13. When the output end of the motor 31 rotates, the projection acts as a stopper in the direction of rotation of the screw shaft 32 within the groove, preventing the lifting pressure rod 33 from rotating together with the output end of the motor 31, and the motor 31 can drive the lifting pressure rod 33 to move along the lifting guide hole 13 by the screw.

[0035] The output end of the motor 31 pushes the lifting pressure rod 33 by a screw so that it moves in the direction of the axis of the lifting guide hole 13, and the lifting pressure rod 33 moves toward the cooking chamber 21 and applies pressure to the pressure regulating valve 35. The greater the pressure received by the pressure regulating valve 35, the greater the closing pressure of the pressure regulating valve 35 relative to the pressure regulating passage, and the higher the pressure can be maintained within the cooking chamber 21.

[0036] When the lid body 1 covers the cooking chamber 21 and the pressure regulating valve 35 closes the pressure regulating passage 36, the cooking chamber 21 is sealed. When the pressure regulating valve 35 opens, the cooking chamber 21 can communicate with the outside through the pressure regulating passage 36. When the gas pressure inside the cooking chamber 21 is greater than the pressure received by the pressure regulating valve 35, the pressure regulating valve 35 opens and releases some of the gas inside the cooking chamber 21. When the gas pressure inside the cooking chamber 21 is lower than the pressure received by the pressure regulating valve 35, the pressure regulating valve 35 closes, and the gas pressure inside the cooking chamber 21 gradually increases further, maintaining the gas pressure inside the cooking chamber 21 within a certain numerical range. In other words, the greater the pressure received by the pressure regulating valve 35, the greater the gas pressure that can be held inside the cooking chamber 21.

[0037] The cooking appliance described above includes a cooking chamber 21 that opens toward the lid body 1. The lid body 1 covers the opening of the cooking chamber 21. The motor 31 and the pressure regulating valve 35 are located separately on both sides of the lid body 1. The motor 31 and the pressure regulating valve 35 are provided opposite each other. Optionally, the pressure regulating valve 35 may be connected to the side of the lid body 1 closest to the cooking chamber 21. A lifting guide hole 13 is located between the motor 31 and the pressure regulating valve 35, and after inserting the lifting pressurizing rod 33 into the lifting guide hole 13, both ends of the lifting pressurizing rod 33 can be directly connected to the motor 31 and the pressure regulating valve 35.

[0038] Selectively, the lid body 1 described above may be provided with a steam valve 16 that communicates with the external environment of the cooking appliance. When the steam valve 16 is opened, the gas inside the cooking chamber 21 is discharged from the cooking chamber 21 through the steam valve 16, allowing for rapid pressure release.

[0039] Optionally, a pressure regulating passage 36 may be provided in the lid body 1. The pressure regulating passage 36 has one end connected to the cooking chamber 21 and the other end connected to the outside of the cooking appliance, allowing gas in the cooking chamber 21 to be discharged from the cooking appliance through the pressure regulating passage 36. Optionally, a pressure regulating valve 35 may be provided at the end of the pressure regulating passage 36 closer to the cooking chamber 21, allowing the pressure regulating valve 35 to close or open the pressure regulating passage. Of course, the pressure regulating valve 35 may also be provided on the side of the lid body 1 closer to the cooking chamber 21, with one end of the pressure regulating passage 36 connected to the outside of the cooking chamber 21 and the other end connected to the pressure regulating valve 35, and the pressure regulating valve 35 may be provided with a pressure regulating hole that communicates with the cooking chamber 21, allowing gas in the cooking chamber 21 to be discharged from the cooking appliance through the pressure regulating hole and the pressure regulating passage 36.

[0040] Selectively, the pressure regulating valve 35 may include a plug and an elastic member. A lifting and pressing rod 33 is connected to the elastic member, and the plug is provided at one end of the elastic member away from the lifting and pressing rod 33, with the plug and elastic member facing the pressure regulating hole. As the lifting and pressing rod 33 moves toward the pressure regulating hole, the elastic member is compressed, driving the plug to close the pressure regulating hole. During the heating process, the gas pressure inside the cooking chamber 21 continues to rise, and when the pressure inside the cooking chamber 21 becomes greater than the pressure applied to the plug by the elastic member, the plug is pushed up, and a portion of the gas inside the cooking chamber 21 is released from the cooking chamber 21 through the pressure regulating hole, achieving a temporary pressure release. After the pressure release, the gas pressure inside the cooking chamber 21 decreases, and the elastic member pushes the plug, closing the pressure regulating hole and allowing the gas inside the cooking chamber 21 to stabilize. pressure value It is held in place. By adjusting the pressure applied to the elastic member of the pressure regulating valve 35 using the lifting and lowering pressurizing rod 33, the gas pressure value inside the cooking chamber 21 can be adjusted.

[0041] As shown in Figures 2, 3, 4, 7, and 8, in some embodiments, a screw shaft 32 is fixedly connected to the motor shaft of the motor 31, and a screw structure is formed on the outer surface of the screw shaft 32. In this way, the screw shaft 32 can be screwed into the lifting pressure rod 33, eliminating the need to replace the entire motor 31 if wear occurs on the motor shaft of the motor 31. Furthermore, by adjusting the dimensions of the screw shaft 32, it is possible to accommodate lifting pressure rods 33 of different dimensions, making it easy to screw the motor 31 to lifting pressure rods 33 of various dimensions.

[0042] Specifically, a fixing hole may be selectively provided in the center of the screw shaft 32, and the output end of the motor 31 may be inserted into the screw shaft 32 and then fixedly connected to the screw shaft 32. The output end of the motor 31 rotates to rotate the screw shaft 32. The end of the lifting pressure rod 33 is provided with a mounting screw hole 331 that fits the screw shaft 32. After the screw shaft 32 is screwed into the mounting screw hole 331 of the lifting pressure rod 33, when the screw shaft 32 rotates, the action of the screw moves the lifting pressure rod 33 along the lifting guide hole 13 in a direction toward the pressure regulating valve 35 and in a direction toward the pressure regulating valve 35.

[0043] As shown in Figures 2, 3, 4, 7, and 8, in some embodiments, the lid body 1 is provided with a lifting guide hole 13, and a lifting pressure rod 33 is movably provided in the lifting guide hole 13. The lifting guide hole 13 is provided in correspondence with the pressure regulating valve 35, and the lifting pressure rod 33 moves along the lifting guide hole 13, passes through the lifting guide hole 13, and applies pressure to the pressure regulating valve 35.

[0044] Specifically, selectively, the lifting guide hole 13 may be a rectangular hole, and the lifting pressure rod 33 may be a rectangular rod. After inserting the lifting pressure rod 33 into the lifting guide hole 13, the lifting pressure rod 33 can move along the axis of the lifting guide hole 13, but the side walls of the lifting guide hole 13 can restrict the rotation of the lifting pressure rod 33 relative to the lifting guide hole 13. This allows the lifting pressure rod 33 to be driven to move along the lifting guide hole 13 by a screw when the output end of the motor 31 is rotated.

[0045] Of course, selectively, the lifting guide hole 13 may be a round hole, and the lifting pressure rod 33 may be a cylindrical rod. Selectively, a bracket may be provided on the lid body 1, a slide groove may be provided on the bracket along the axis of the lifting guide hole 13, and a slider may be provided on the side of the lifting pressure rod 33. When the lifting pressure rod 33 is inserted into the lifting guide hole 13, the slider is inserted into the slide groove, making the lifting pressure rod 33 movable along the lifting guide hole 13. The slider and slide groove then act as stoppers in the rotational direction of the lifting pressure rod 33 relative to the lifting guide hole 13. As a result, when the output end of the motor 31 is rotated, the screw can drive the lifting pressure rod 33 to move along the lifting guide hole 13.

[0046] Alternatively, after inserting the lifting pressure rod 33 into the lifting guide hole 13 as described above, the lifting pressure rod 33 may move relative to the lifting guide hole 13 along the axis of the lifting guide hole 13. In addition, a projection extending along the axis of the lifting guide hole 13 may be selectively provided on the side of the lifting pressure rod 33, and a groove extending along the axis of the lifting guide hole 13 may be provided on the inner wall of the lifting guide hole 13. After inserting the projection into the groove, the projection can move within the groove along the axis of the lifting guide hole 13. When the screw shaft 32 rotates, the projection acts as a stopper in the direction of rotation of the screw shaft 32 within the groove. That is, even if the screw shaft 32 rotates, the lifting pressure rod 33 does not rotate with the screw shaft 32, and the output end of the motor 31 can drive the lifting pressure rod 33 to move along the lifting guide hole 13 by the screw.

[0047] Of course, a groove may be provided on the side of the lifting pressure rod 33, the groove extending in the direction of the axis of the lifting guide hole 13, and a projection may be provided on the inner wall of the lifting guide hole 13. After the projection is inserted into the groove, the lifting pressure rod 33 can move along the direction of the axis of the lifting guide hole 13. Furthermore, when the screw shaft 32 rotates, the lifting pressure rod 33 cannot rotate with the screw shaft 32 due to the positioning of the projection and groove in the direction of rotation of the screw shaft 32. As a result, the screw shaft 32 can be driven to move the lifting pressure rod 33 along the lifting guide hole 13 by the action of the screw.

[0048] By providing a lifting guide hole 13 in the lid body 1 and positioning the lifting guide hole 13 opposite the pressure regulating valve 35, the lifting guide hole 13 acts to guide the movement of the lifting pressure rod 33, thereby increasing the stability of the trajectory of the lifting pressure rod 33 during its movement, and enabling the lifting pressure rod 33 to apply stable pressure to the pressure regulating valve 35.

[0049] As shown in Figures 2, 3, 4, 7, and 8, in some embodiments, a first stopper portion 41 is provided on the side of the lifting pressure rod 33, and a second stopper portion 42 is provided on the inner wall of the lifting guide hole 13. The first stopper portion 41 and the second stopper portion 42 are fitted together to fix their positions and restrict the lifting pressure rod 33 from rotating together with the motor 31.

[0050] Specifically, after inserting the lifting pressure rod 33 into the lifting guide hole 13, the lifting pressure rod 33 becomes movable relative to the lifting guide hole 13 along its axis. Optionally, a projection extending along the axis of the lifting guide hole 13 may be provided on the side of the lifting pressure rod 33 as a first stopper portion 41, and a groove extending along the axis of the lifting guide hole 13 may be provided on the inner wall of the lifting guide hole 13 as a second stopper portion 42. After inserting the projection into the groove, the projection becomes movable within the groove along the axis of the lifting guide hole 13. When the motor 31 rotates, the projection acts as a stopper in the rotational direction of the screw shaft 32 within the groove. That is, even when the motor 31 rotates, the lifting pressure rod 33 does not rotate with the motor 31, and the motor 31 can drive the lifting pressure rod 33 to move along the lifting guide hole 13 by screw engagement.

[0051] Of course, the first stopper portion 41 may optionally be a groove provided on the side of the lifting pressure rod 33, the groove extending in the direction of the axis of the lifting guide hole 13, and a projection may be provided on the inner wall of the lifting guide hole 13. After the projection is inserted into the groove, the lifting pressure rod 33 can move along the axis of the lifting guide hole 13, but when the motor 31 rotates, the lifting pressure rod 33 acts as a stopper in the direction of rotation of the motor 31 by the projection and the groove, so that the lifting pressure rod 33 cannot rotate with the motor 31. As a result, the motor 31 can be driven by the action of a screw to move the lifting pressure rod 33 along the lifting guide hole 13.

[0052] A first stopper portion 41 is provided on the side of the lifting pressure rod 33, and a second stopper portion 42 is provided on the inner wall of the lifting guide hole 13. By fitting the first stopper portion 41 and the second stopper portion 42 together to fix their positions, the lifting pressure rod 33 is prevented from rotating together with the motor 31. When the motor 31 is rotated, the lifting pressure rod 33 and the motor 31 rotate relative to each other, and the screw drives the lifting pressure rod 33 to move along the lifting guide hole 13, ensuring the accuracy with which the driving force output from the motor 31 drives the lifting pressure rod 33 to move.

[0053] As shown in Figures 7 and 8, in some embodiments, the first stopper portion 41 is a stopper projection provided on the side of the lifting pressure rod 33, and the second stopper portion 42 is a stopper groove provided on the inner wall of the lifting guide hole 13. The stopper groove extends along the axial direction of the lifting guide hole 13, and the stopper projection is inserted into the stopper groove and slidably connected to the stopper groove.

[0054] Specifically, the stopper projection selectively protrudes along the radial direction of the lifting pressure rod 33, and the inner wall of the lifting guide hole 13 is recessed along the radial direction of the lifting guide hole 13 in a direction away from the axis of the lifting guide hole 13 to form a stopper groove. The direction from the motor 31 toward the pressure regulating valve 35 is the direction of movement of the lifting pressure rod 33. The stopper groove extends along the direction from the motor 31 toward the pressure regulating valve 35, increasing the contact area between the stopper projection and the stopper groove. The stopper projection is slidably connected to the stopper groove. The stopper projection is located within the stopper groove and does not affect the movement of the lifting pressure rod 33 toward or away from the cooking chamber 21.

[0055] After the stopper projection described above is connected to the stopper groove, when the motor 31 is rotated, the motor 31 becomes rotatable relative to the lifting pressure rod 33 without the lifting pressure rod 33 rotating within the lifting guide hole 13. The motor 31 can then drive the lifting pressure rod 33 to move toward or away from the cooking chamber 21 by the action of a screw.

[0056] The first stopper portion 41 is provided as a stopper projection on the side of the lifting pressure rod 33, and the second stopper portion 42 is provided as a stopper groove on the inner wall of the lifting guide hole 13. By connecting the stopper projection and the stopper groove, they act as a stopper against the rotation of the lifting pressure rod 33. When the motor 31 is rotated, the motor 31 can rotate relative to the lifting pressure rod 33, and the motor 31 drives the lifting pressure rod 33 to move through the action of a screw.

[0057] As shown in Figures 6, 7, and 8, in some embodiments, there are multiple first stopper portions 41 and multiple second stopper portions 42. The multiple first stopper portions 41 are provided on the side of the lifting pressure rod 33 at intervals along the circumferential direction of the lifting guide hole 13, and the multiple second stopper portions 42 are provided on the inner wall of the lifting guide hole 13 at intervals along the circumferential direction of the lifting guide hole 13. The multiple first stopper portions 41 are fitted and connected to the multiple second stopper portions 42 in a one-to-one correspondence to fix their position.

[0058] Specifically, the number of first stopper portions 41 and second stopper portions 42 may be selectively two. Selectively, the two first stopper portions 41 may be provided on both sides of the lifting pressure rod 33 along the radial direction of the lifting pressure rod 33, and the two second stopper portions 42 may be provided on both sides of the lifting pressure rod 33 along the radial direction of the lifting guide hole 13, with the two first stopper portions 41 and the two second stopper portions 42 corresponding to each other in a one-to-one relationship.

[0059] Of course, the number of first stopper portions 41 and second stopper portions 42 may be three. The three first stopper portions 41 are provided at intervals along the circumferential direction of the lifting pressure rod 33, and the three second stopper portions 42 are provided at intervals along the circumferential direction of the lifting guide hole 13, and the three first stopper portions 41 and three second stopper portions 42 are provided in a one-to-one correspondence and connected to each other.

[0060] By having multiple first stopper portions 41 and multiple second stopper portions 42, and fitting and connecting the multiple first stopper portions 41 and the multiple second stopper portions 42 in a one-to-one correspondence, multiple position-locking fitting connection points are created between the lifting pressure rod 33 and the lifting guide hole 13, thereby sharing the pressure on the lifting guide hole 13 when the screw shaft 32 is rotated to drive the lifting pressure rod 33 to move.

[0061] As shown in Figures 3, 4, 6, 7, and 8, in some embodiments, a vertical stopper portion 332 is provided on the side of the lifting pressure rod 33, located at one end away from the pressure regulating valve 35. When the lifting pressure rod 33 moves to the set position toward the pressure regulating valve 35, the vertical stopper portion 332 contacts the lid body 1, limiting the separation of the lifting pressure rod 33 from the screw shaft 32.

[0062] Specifically, optionally, a projection extending radially from the lifting pressure rod 33 may be provided at the end of the lifting pressure rod 33 as a vertical stopper portion 332. When the lifting pressure rod 33 moves toward the cooking chamber 21 and reaches the set position, the projection contacts the surrounding area of ​​the lifting guide hole 13, thereby restricting the lifting pressure rod 33 from moving toward the cooking chamber 21. Optionally, the set position may be a limit position where one end of the screw shaft 32 away from the motor 31 is connected to the mounting screw hole 331 of the lifting pressure rod 33. That is, when the lifting pressure rod 33 is in the set position, if the motor 31 continues to rotate and pushes the lifting pressure rod 33 toward the cooking chamber 21, the screw structure of the motor 31 disengages from the mounting screw hole 331. Of course, optionally, the set position may be located between the limit position and the motor 31. The objective is to prevent the lifting pressure rod 33 from continuing to move toward the pressure regulating valve 35 after it has moved to the set position due to the position-holding action of the vertical stopper portion 332, thereby preventing the screw connection between the motor 31 and the lifting pressure rod 33 from coming undone.

[0063] The lifting pressure rod 33 is provided with a vertical stopper portion 332 at one end opposite the cooking chamber 21 of the lid body 1. When the lifting pressure rod 33 moves to the set position, the vertical stopper portion 332 restricts the movement of the lifting pressure rod 33 toward the cooking chamber 21, preventing the screw structure of the motor 31 from coming out of the mounting screw hole 331, and maintaining the screw engagement with the motor 31 when the lifting pressure rod 33 moves.

[0064] As shown in Figures 2, 3, 4, 5, and 6, in some embodiments, the lid body 1 comprises a surface lid 11 and a back lid 12 connected to the surface lid 11, and a pressure adjustment drive module is provided on the surface lid 11.

[0065] The rear cover 12 is provided with a mounting through-hole corresponding to the lifting pressure rod 33, and a pressure regulating seal member 34 is provided in the mounting through-hole. The pressure regulating seal member 34 is connected to the area of ​​the rear cover 12 located around the mounting through-hole and covers the mounting through-hole. The pressure regulating seal member 34 is also located between the lifting pressure rod 33 and the pressure regulating valve, and is configured to elastically deform under the pressure action of the lifting pressure rod 33 to apply pressure to the pressure regulating valve 35.

[0066] Specifically, optionally, the front cover 11 and the back cover 12 are provided facing each other and connected, the back cover 12 is located on the side closer to the cooking chamber 21, and the motor 31 may be attached to the front cover 11. Optionally, the pressure regulating valve 35 is attached to the back cover 12, and the motor 31 and the back cover 12 are provided facing each other. Optionally, the lifting and lowering pressure rod 33 may be movably provided on the front cover 11. Optionally, the mounting through hole is a through hole provided in the back cover 12, and the mounting through hole and the lifting and lowering pressure rod 33 are provided facing each other. Optionally, the pressure regulating seal member 34 is provided on the side of the back cover 12 closer to the front cover 11, and the pressure regulating seal member 34 and the mounting through hole are provided facing each other. When the lifting and lowering pressurizing rod 33 comes into contact with the pressure regulating seal member 34, the pressure regulating seal member 34 deforms, and at least a portion of the pressure regulating seal member 34 moves together with the lifting and lowering pressurizing rod 33, causing at least a portion of the pressure regulating seal member 34 to come into contact with the pressure regulating valve 35, and the lifting and lowering pressurizing rod 33 applies pressure to the pressure regulating valve 35 via the pressure regulating seal member 34.

[0067] Of course, optionally, the lifting guide hole 13 may be provided in the surface cover 11, with the lifting guide hole 13 positioned between the motor 31 and the pressure regulating valve 35, and the lifting pressurizing rod 33 inserted into the lifting guide hole 13. Optionally, the mounting through hole may be a through hole provided in the back cover 12, and the axis lines of the mounting through hole and the lifting guide hole 13 may overlap. Optionally, the pressure regulating seal member 34 may be provided on the side of the back cover 12 closer to the surface cover 11, and the pressure regulating seal member 34 and the mounting through hole may be positioned opposite each other.

[0068] One end of the aforementioned lifting pressure rod 33 is located on the opposite side of the surface cover 11 from the back cover 12, and the other end of the lifting pressure rod 33 is located on the side of the surface cover 11 closer to the back cover 12. As a result, one end of the lifting pressure rod 33 is screwed into the motor 31, and the other end is in contact with the pressure adjustment seal member 34.

[0069] Selectively, the pressure regulating seal member 34 may be a block-shaped structure or a deformable sheet-shaped structure. The pressure regulating seal member 34 is provided on the surface of the pressure regulating valve 35 closest to the surface cover 11. Selectively, the edge of the pressure regulating seal member 34 may be sealed and connected to the area around the mounting through-hole of the back cover so that gas does not come into contact with the motor 31 through the mounting through-hole.

[0070] Selectively, the pressure regulating seal member 34 may be in contact with the end of the lifting and pressing rod 33. As the lifting and pressing rod 33 moves, the pressure regulating seal member 34 moves with it, causing the pressure regulating seal member 34 to come into contact with the pressure regulating valve 35 and apply pressure to the pressure regulating valve 35. Of course, selectively, the side of the pressure regulating valve 35 facing the lid body 1 may be in contact with the pressure regulating seal member 34, and the lifting and pressing rod 33 may move toward the pressure regulating valve 35 and come into contact with the pressure regulating seal member 34 before applying pressure to the pressure regulating valve 35.

[0071] Alternatively, the pressure regulating seal member 34 may be movably provided between the pressure regulating valve 35 and the lifting and pressing rod 33, and when the lifting and pressing rod 33 moves toward the pressure regulating valve 35, the lifting and pressing rod 33 may first contact the pressure regulating seal member 34 and move the pressure regulating seal member 34, after which the pressure regulating seal member 34 may contact the pressure regulating valve 35, and the lifting and pressing rod 33 may apply pressure to the pressure regulating valve 35 via the pressure regulating seal member 34, but this is not limited to this.

[0072] The lid body 1 comprises a front lid 11 and a back lid 12 connected to the front lid 11. A pressure adjustment drive module is provided on the front lid 11, and the motor 31 is mounted on the front lid 11. When the cooking chamber 21 is heated, the motor 31 is placed away from the cooking chamber 21 in a lower temperature environment, thereby lowering the operating environment temperature of the motor 31. The back lid 12 is provided with a mounting through-hole corresponding to the lifting and lowering pressurizing rod 33, and a pressure adjustment seal member 34 is installed in the mounting through-hole. The pressure adjustment seal member 34 is connected to a region located around the mounting through-hole of the back lid 12. The pressure adjustment seal member 34 is positioned between the lifting and lowering pressurizing rod 33 and the pressure adjustment valve 35. The lifting and lowering pressurizing rod 33 contacts the pressure adjustment seal member 34 first, and pressure is applied to the pressure adjustment valve 35 via the pressure adjustment seal member 34. The pressure adjustment seal member 34 can increase the contact area with the pressure adjustment valve 35. contact area This prevents the pressure regulating valve 35 from being damaged due to an excessive pressing force per unit area from the small lifting pressure rod 33.

[0073] As shown in Figures 2, 3, 4, and 6, in some embodiments, the lid body 1 further comprises a movable lid plate 15 that is removablely attached to the rear lid 12 on the side opposite to the front lid 11. Both a pressure regulating passage 36 and a pressure regulating valve 35 are installed on the movable lid plate 15.

[0074] Specifically, the movable cover plate 15 is detachably attached to the back cover plate 12 on the side opposite to the front cover plate 11. The movable cover plate 15 can cover the opening of the cooking chamber 21. Both the pressure regulating valve 35 and the pressure regulating passage 36 are installed on the movable cover plate 15, and gas in the cooking chamber 21 must pass through the pressure regulating passage 36 and the pressure regulating valve 35 of the movable cover plate 15 in order to be released from the cooking appliance. When the movable cover plate 15 is removed from the back cover plate 12, the contact between the pressure regulating valve 35 and the pressure regulating seal member 34 is released, but the pressure regulating seal member 34 remains attached to the back cover plate 12.

[0075] By detachably attaching the movable cover plate 15 to the opposite side of the rear cover 12 from the front cover 11, and by installing both the pressure regulating passage 36 and the pressure regulating valve 35 on the movable cover plate 15, the user can directly clean the pressure regulating valve 35 and the pressure regulating passage 36 after removing the movable cover plate 15 from the rear cover 12, thereby improving the convenience of cleaning the pressure regulating valve 35 and the pressure regulating passage 36.

[0076] As shown in Figures 2, 3, and 4, in some embodiments, the pressure regulating seal member 34 comprises a pressure block portion 341 and an arm portion 342 connected to the edge of the pressure block portion 341. The pressure block portion 341 is provided opposite the lifting pressure rod 33 and the pressure regulating valve 35. The lifting pressure rod 33 applies pressure to the pressure regulating valve 35 via the pressure block portion 341. The arm portion 342 is configured to elastically deform when the lifting pressure rod 33 applies pressure to the pressure block portion 341.

[0077] Specifically, the pressure block section 341 may optionally be a cylindrical or rectangular block structure. The arm section 342 is provided surrounding the pressure block section 341, and the arm section 342 is connected to the side wall of the pressure block section 341. The arm section 342 may optionally be made of an elastic material. The side of the arm section 342 away from the pressure block section 341 is connected to the side of the back cover 12 closer to the front cover 11. When the lifting pressure rod 33 moves toward the pressure regulating valve 35, and after the lifting pressure rod 33 comes into contact with the pressure block section 341, an attempt is made to move the pressure block section 341 toward the pressure regulating valve 35, the arm section 342 deforms and moves the pressure block section 341 together with the lifting pressure rod 33.

[0078] The aforementioned pressure block section 341 is for receiving the lifting pressure rod 33. The pressure block section 341 also contacts the pressure regulating valve 35 and has a diameter larger than the lifting pressure rod 33. When the lifting pressure rod 33 is not applying pressure to the pressure regulating valve 35, the pressure block section 341 is in contact with the pressure regulating valve 35. Of course, selectively, when the lifting pressure rod 33 is not applying pressure to the pressure regulating valve 35, the pressure block section 341 may have one side in contact with the lifting pressure rod 33 and the other side connected to the pressure regulating valve 35.

[0079] Selectively, the pressurizing block 341 may be located on the side of the mounting through-hole away from the cooking chamber 21 so that the pressurizing block 341 can move toward the pressure regulating valve 35 after passing through the mounting through-hole and then contact the pressure regulating valve 35. The arm 342 is provided such that its edge, away from the pressurizing block 341, surrounds the mounting through-hole. The arm 342 is also sealed to one side of the surface cover 11 to prevent gas in the cooking chamber 21 from entering the space between the back cover 12 and the surface cover 11 through the mounting through-hole, and to prevent gas from passing through the lifting guide hole 13 and coming into contact with the motor 31, thereby damaging the motor 31.

[0080] By installing the pressure regulating seal member 34 to include a pressurized block portion 341 and an arm portion 342 that surrounds the pressurized block portion 341, is connected to the edge of the pressurized block portion 341, and deforms to move the pressurized block portion 341 together with the lifting pressurized rod 33, the pressurized block portion 341 receives the pressure from the lifting pressurized rod 33, and it is possible to prevent the pressure regulating valve 35 from being damaged due to excessive pressure concentration transmitted to the pressure regulating valve 35. In addition, the arm portion 342 and the pressurized block portion 341 prevent gas in the cooking chamber 21 from passing through the mounting through hole or lifting guide hole 13 and coming into contact with the motor 31, thereby damaging the motor 31.

[0081] Furthermore, as shown in Figures 9 and 10, the lifting pressure rod 33 is located above the pressure block section 341, and the lower end surface of the lifting pressure rod 33 abuts against the upper end surface of the pressure block section 341, fitting snugly. As a result, the lifting pressure rod 33 applies a downward force to the pressure block section 341. When the lifting pressure rod 33 moves downward, it moves the pressure block section 341 downward, applying pressure to the pressure regulating valve 35, which then closes the pressure regulating passage 36.

[0082] In a specific embodiment, as shown in Figures 9 and 10, both the pressure regulating valve 35 and the pressure regulating passage 36 may be provided on the movable cover plate 15. The pressure regulating valve 35 comprises a valve body 351 and an elastic member 352 elastically supported between the valve body 351 and the movable cover plate 15. The inlet of the pressure regulating passage 36 forms a pressure regulating port 361 that communicates with the cooking chamber. When the gas pressure in the cooking chamber is relatively low, the valve body 351 of the pressure regulating valve 35 closes the pressure regulating port 361 with the force acting by the lifting and lowering pressurizing rod 33, gradually increasing the gas pressure in the cooking chamber. When the gas pressure inside the cooking chamber is relatively high, and the upward force of the gas pressure on the pressure regulating valve 35 becomes greater than the downward force of the lifting and lowering pressurizing rod 33 on the pressure regulating valve 35, the gas pressure inside the cooking chamber pushes the valve body 351 of the pressure regulating valve 35 upward from the pressure regulating port 361, opening the pressure regulating port 361 and releasing the pressure.

[0083] Specifically, the height of the pressure block section 341 along the direction of movement of the lifting pressure rod 33 is greater than the movement stroke of the lifting pressure rod 33. As shown in Figure 10, L is the movement stroke of the lifting pressure rod 33, and H is the height of the pressure block section 341 along the direction of movement of the lifting pressure rod 33, and H satisfies the condition H > L. In this way, it is possible to avoid damage to the arm section 342 of the pressure adjustment seal member 34 by being pressed by the lifting pressure rod 33 and the pressure adjustment valve 35 during extension and retraction.

[0084] Specifically, the ratio of the area of ​​the end face of the pressure block portion 341 that abuts against the lifting pressure rod 33 to the area of ​​the end face of the lifting pressure rod 33 that abuts against the pressure block portion 341 is 0.6 or more, that is, the ratio of the area of ​​the lower end face of the pressure block portion 341 to the upper end face of the lifting pressure rod 33 is 0.6 or more. As shown in Figure 9, S1 in the figure represents the area of ​​the end face of the pressure block portion 341 that abuts against the lifting pressure rod 33, and S2 represents the area of ​​the end face of the lifting pressure rod 33 that abuts against the pressure block portion 341, and S1 and S2 satisfy S1 / S2 ≥ 0.6. In this way, a sufficient contact area can be secured when the pressure block portion 341 and the lifting pressure rod 33 abut and fit together, and the stability of the pressure applied to the pressure block portion 341 by the lifting pressure rod 33 can be ensured.

[0085] In some embodiments, as shown in Figures 9 to 11, the arm portion 342 comprises a first edge bending portion 3421 and a second edge bending portion 3422. The second edge bending portion 3422 surrounds the pressure block portion 341 and is connected to the edge of the pressure block portion 341. One edge of the first edge bending portion 3421 is connected to the edge of the second edge bending portion 3422 that is away from the pressure block portion 341, forming a clamping angle, and the other edge is connected to a region located around the mounting through hole of the back cover 12.

[0086] In this way, when the lifting pressure rod 33 applies pressure to the pressure regulating seal member 34, the angle between the first edge bending portion 3421 and the second edge bending portion 3422 changes, causing the arm portion 342 of the pressure regulating seal member 34 to extend. As a result, the pressure block portion 341 of the pressure regulating seal member 34 applies pressure to the pressure regulating valve 35, moving the pressure regulating valve 35 and closing the pressure regulating passage 36.

[0087] Specifically, the ratio of the lengths of the first edge bend portion 3421 to the second edge bend portion 3422 is between 0.7 and 0.95. As shown in Figure 11, L1 is the length of the first edge bend portion 3421, and L2 is the length of the second edge bend portion 3422, and L1 and L2 satisfy the condition 0.95L2 ≥ L1 ≥ 0.7L2.

[0088] In other words, the length of the second edge bend 3422 is slightly longer than the length of the first edge bend 3421, but not significantly longer, and is within a predetermined ratio range. By limiting the lengths of the first edge bend 3421 and the second edge bend 3422 to the above range, when steam in the cookware pushes up the pressure regulating seal member 34, the deformation of the pressure regulating seal member 34 basically appears as an angle change between the first edge bend 3421 and the second edge bend 3422, and the thickness hardly changes. This avoids elastic force due to changes in the thickness of the pressure regulating seal member 34 and reduces the influence of changes in the thickness of the pressure regulating seal member 34 on the pressure regulating drive module and pressure regulating valve 35. As a result, the pressure regulating valve 35 only needs to consider the fixed weight of the first edge bend 3421 and below the pressure regulating seal member 34 during the design phase, which is advantageous in ensuring the pressure regulating accuracy of the pressure regulating drive module and pressure regulating valve.

[0089] As shown in Figures 1 to 6, in some embodiments, the surface cover 11 is provided with a mounting groove 14 that is recessed toward the rear cover 12. The lifting pressure rod 33 is movably mounted within the mounting groove 14, and the motor 31 is fixedly connected to the inner groove wall of the mounting groove 14.

[0090] Specifically, optionally, the surface lid 11 may have a recess on the side opposite to the back lid 12 toward the cooking chamber 21 to form a mounting groove 14, and a through hole may be provided at the bottom of the mounting groove 14 as a lifting guide hole 13. Optionally, a support column may be provided at the bottom of the mounting groove 14, and the motor 31 may be connected to the support column and mounted in the mounting groove 14. By positioning the motor 31 in the mounting groove 14, the mounting groove 14 can protect the motor 31.

[0091] Optionally, a through hole may be provided at the bottom of the mounting groove 14 so that the lifting pressure rod 33 can pass through the through hole and apply pressure to the pressure regulating valve 35. Of course, optionally, a lifting guide hole 13 and a second stopper portion 42 may be provided at the bottom of the mounting groove 14, and a first stopper portion 41 may be provided on the lifting pressure rod 33 so that the lifting pressure rod 33 passes through the lifting guide hole 13 and the first stopper portion 41 and the second stopper portion 42 are fitted and connected.

[0092] The surface cover 11 is recessed toward the cooking chamber 21 to form a mounting groove 14, and the motor 31 is fixedly connected to the inner wall of the mounting groove 14. This mounts the motor 31 to the mounting groove 14, which protects the motor 31 and avoids the motor 31 protruding from the surface cover 11, making it susceptible to impact and thus detracting from the aesthetics.

[0093] In some other embodiments, the lid body 1 comprises a front lid 11 and a back lid 12 connected to the front lid 11, with the pressure adjustment drive module provided on the back lid 12. That is, in specific embodiments, the pressure adjustment drive module is not limited to the front lid 11, but may be provided on the back lid 12 as needed.

[0094] By installing the pressure adjustment drive module on the back cover 12, it is possible to avoid the deformation of the front cover 11 affecting the amount of compression of the elastic member in the pressure adjustment valve 35, compared to when the pressure adjustment drive module is installed on the front cover 11, thereby improving the accuracy of pressure control.

[0095] Furthermore, the pressure adjustment drive module may be mounted on the side of the rear cover 12 facing the front cover 11. The rear cover 12 is provided with a mounting through-hole corresponding to the lifting and lowering pressurizing rod 33, and a pressure adjustment sealing member 34 is installed in the mounting through-hole. The pressure adjustment sealing member 34 is connected to the area of ​​the rear cover 12 located around the mounting through-hole so as to cover the mounting through-hole. The pressure adjustment sealing member 34 is also located between the lifting and lowering pressurizing rod 33 and the pressure adjustment valve 35, and is configured to elastically deform under the pressure action of the lifting and lowering pressurizing rod 33 in order to apply pressure to the pressure adjustment valve 35.

[0096] In a specific embodiment, the pressure regulating valve 35 and the pressure regulating drive module are not limited to being provided on two different members of the lid assembly. For example, in the above embodiment, the pressure regulating drive module is provided on either the front lid 11 or the back lid 12, and the pressure regulating valve 35 is provided on the movable lid plate 15. In a specific embodiment, the pressure regulating valve 35 and the pressure regulating drive module may be integrated as a single integrated module. This integrated module can be attached as a whole to either the front lid 11 or the back lid 12. In this way, problems such as reduced pressure control accuracy due to assembly errors and structural deformation that occur when the pressure regulating valve 35 and the pressure regulating drive module are attached as separate parts can be avoided, and insect and moisture repellent effects can also be achieved.

[0097] As shown in Figures 5 and 6, in some embodiments, the cover assembly further comprises a first microswitch 51 and a second microswitch 52. The lifting pressure rod 33 is provided with a switch trigger unit 333. The switch trigger unit 333 is configured to trigger the operation of the first microswitch 51 when the lifting pressure rod 33 moves to a first position in the direction toward the pressure regulating valve 35, and to trigger the operation of the second microswitch 52 when the lifting pressure rod 33 moves to a second position in the direction toward the pressure regulating valve 35.

[0098] Specifically, the first microswitch 51 and the second microswitch 52 may be selectively positioned on either side of the lifting pressure rod 33 in a direction perpendicular to the axis of the lifting guide hole 13. The lifting pressure rod 33 may have a projection structure selected as a switch trigger portion 333 for contacting the first microswitch 51 and the second microswitch 52. Selectively, the first position may be a position in which the lifting pressure rod 33 is close to the motor 31. In this case, the surfaces of the lifting pressure rod 33 and the motor 31 are in contact with each other, or the screw of the motor 31 is located at the bottom of the mounting screw hole 331. When the first microswitch 51 is triggered, the motor 31 stops the rotational drive of the screw shaft 32, preventing the lifting pressure rod 33 from moving in the direction of the motor 31. The second position may be a position in which the lifting pressure rod 33 is separated from the motor 31. At this time, the end of the screw of the motor 31 is still screwed into the opening of the mounting screw hole, but if the motor 31 continues to rotate and moves the lifting pressure rod 33 away from the motor 31, the connection between the screw of the motor 31 and the mounting screw hole 331 will be disengaged. When the second microswitch 52 is triggered, the rotation of the motor 31 stops, preventing the lifting pressure rod 33 from moving toward the cooking chamber 21.

[0099] The first and second positions represent the positions where the lifting pressure rod 33 has moved to its limit. That is, if the motor 31 continues to rotate after the lifting pressure rod 33 has moved to the first position, causing the lifting pressure rod 33 to continue moving in the direction of the motor 31, the lifting pressure rod 33 may come into contact with the surface of the motor 31, or the screw of the motor 31 may rotate to the bottom of the mounting screw hole 331, creating significant resistance and making the motor 31 prone to damage. If the motor 31 continues to rotate after the lifting pressure rod 33 has moved to the second position, causing the lifting pressure rod 33 to move in the direction of the pressure regulating valve 35, the connection between the screw of the motor 31 and the mounting screw hole 331 will be disengaged, and the motor 31 will no longer be able to drive the lifting pressure rod 33 to move by its rotation.

[0100] Optionally, the first microswitch 51 and the second microswitch 52 may be connected to an alarm. When the first microswitch 51 and the second microswitch 52 are triggered, the alarm sounds an alarm to warn the user. Of course, optionally, a controller may be installed on the cover structure. Optionally, the controller may be a chip or a circuit board. The controller is electrically connected to the motor 31, the first microswitch 51 and the second microswitch 52, and when the first microswitch 51 and the second microswitch 52 are triggered, it sends a signal to the controller, which controls the motor 31 to stop operating, thereby stopping the rotation of the screw shaft 32.

[0101] The cover assembly further comprises a first microswitch 51 and a second microswitch 52. The lifting pressure rod 33 is provided with a mounting screw hole 331 at one end and a switch trigger portion 333. The switch trigger portion 333 is configured to trigger the operation of the first microswitch 51 when the lifting pressure rod 33 moves to a first position, and to trigger the operation of the second microswitch 52 when the lifting pressure rod 33 moves to a second position. By installing it in this way, the user can determine whether the lifting pressure rod 33 is moving within a set range using the first microswitch 51 and the second microswitch 52, thereby preventing the lifting pressure rod 33 from moving too far and becoming detached from the screw shaft 32 or colliding with the motor 31, and improving the stability of the pressure adjustment drive module during use.

[0102] As shown in Figures 1 and 2, embodiments of the present invention further provide a cooking utensil comprising a main body 2 and a lid assembly described in any of the above embodiments, which is installed on the main body 2 in a manner that can be opened and closed.

[0103] Specifically, a cooking chamber 21 is formed in the main body 2, the lid assembly covers the cooking chamber 21, and the pressure regulating valve 35 comes into contact with the gas inside the cooking chamber 21 to control the gas pressure inside the cooking chamber 21.

[0104] The main body 2 described above is installed opposite the lid assembly, and the side edge of the lid assembly facing the main body 2 is rotatably connected to the side edge of the main body 2 that faces the lid assembly. As a result, when the lid assembly is rotated toward the main body 2 to cover the main body 2, the lid assembly covers the cooking chamber 21, and when the lid assembly rotates toward the main body 2, it opens the cooking chamber 21.

[0105] By using the lid assembly described in any of the above embodiments in the cooking appliance, the torque output from the motor 31 applies pressure to the pressure regulating valve 35 via the lifting and pressing rod 33, reducing losses in the process of power transmission from the motor 31 to the pressure regulating valve 35, and improving the accuracy of the lid assembly in regulating the air pressure in the cooking chamber 21 via the pressure regulating valve 35. In addition, the motor 31 can be positioned away from the cooking chamber 21 to lower its operating temperature and extend its lifespan.

[0106] In the embodiment of the present invention, the cooking appliance is installed with the main body 2 and the lid assembly facing each other during actual use, and the lid body 1 covers the cooking chamber 21 of the main body 2. When the motor 31 is activated, it rotates the screw shaft 32. The first stopper portion 41 and the second stopper portion 42 fit together so that when the screw shaft 32 is rotated, the lifting pressure rod 33 does not rotate with the screw shaft 32, and the screw shaft 32 drives the lifting pressure rod 33 to move toward the pressure regulating valve 35 by the action of the screw. When the lifting pressure rod 33 comes into contact with the pressure regulating seal member 34, the lifting pressure rod 33 moves the pressure regulating seal member 34 toward the pressure regulating valve 35. After the pressure regulating seal member 34 comes into contact with the pressure regulating valve 35, the pressure from the lifting pressure rod 33 is transmitted to the pressure regulating valve 35, and the pressure regulating valve 35 closes the pressure regulating passage 36 using the pressure applied from the lifting pressure rod 33 as the closing pressure. This controls the gas pressure inside the cooking chamber 21.

[0107] In this specification, relational terms such as “first” and “second” are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that any such actual relationship or order exists between these entities or operations. Furthermore, the terms “encompassing,” “including,” or any other variations thereof, mean “including non-exclusively,” so that a process, method, article, or apparatus containing a set of elements may also include other elements not explicitly indicated, or elements specific to such a process, method, article, or apparatus, in addition to those elements. Where no further restrictions exist, an element limited by the phrase “…including one” does not preclude the existence of another identical element in a process, method, article, or apparatus containing that element.

[0108] The above are merely specific embodiments of the present application, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Accordingly, the present application is not limited to these embodiments described herein, but rather conforms to the broadest scope of the principles and novel features disclosed herein. [Explanation of Symbols]

[0109] 1...Lid body, 11...Front lid, 12...Back lid, 13...Lifting guide hole, 14...Mounting groove, 15...Movable lid plate, 16...Steam valve, 2...Main body, 21...Cooking chamber, 31...Motor, 32...Screw shaft, 33...Lifting pressure rod, 331...Mounting screw hole, 332...Vertical stopper part, 333...Switch trigger part, 34...Pressure adjustment seal member, 341...Pressure block part, 342...Arm part, 3421...First edge bending part, 3422...Second edge bending part, 35...Pressure adjustment valve, 351...Valve body, 352...Elastic member, 36...Pressure adjustment passage, 361...Pressure adjustment port, 41...First stopper part, 42...Second stopper part, 51...First microswitch, 52...Second microswitch.

Claims

1. A lid body provided with a pressure regulating passage for discharging gas from the cooking chamber of a cooking appliance, wherein one end of the pressure regulating passage communicates with the cooking chamber via a pressure regulating hole, and the other end communicates with the outside of the cooking appliance, and a pressure regulating valve is provided within the pressure regulating passage for closing or opening the pressure regulating hole, The lid body is provided in correspondence with the pressure regulating valve and includes a pressure regulating drive module for applying pressure to the pressure regulating valve to adjust the closing pressure of the pressure regulating valve relative to the pressure regulating hole, The lid assembly for a cooking appliance is characterized in that the pressure regulating valve is provided on the side of the pressure regulating passage closest to the pressure regulating hole and comprises a plug for closing or opening the pressure regulating hole and an elastic member provided on the side of the pressure regulating passage away from the pressure regulating hole and connected to the plug, the pressure regulating drive module comprises a motor and a lifting and lowering pressurizing rod, a screw structure is provided at the output end of the motor, the lifting and lowering pressurizing rod is movably provided on the lid body and the lifting and lowering pressurizing rod is screwed into the screw structure, the lifting and lowering pressurizing rod is connected to the elastic member, the motor moves the lifting and lowering pressurizing rod in a direction toward or away from the pressure regulating valve, and the lifting and lowering pressurizing rod applies pressure to the pressure regulating valve.

2. The lid assembly for a cooking utensil according to claim 1, characterized in that a screw shaft is fixedly connected to the motor shaft of the motor, and the screw structure is formed on the outer circumferential surface of the screw shaft.

3. The lid body is provided with a lifting guide hole, and the lifting pressure rod is movably provided in the lifting guide hole. The lifting guide hole is provided in correspondence with the pressure regulating valve. The lid assembly of a cooking utensil according to claim 1, characterized in that the lifting and lowering pressurizing rod moves along the lifting and lowering guide hole, passes through the lifting and lowering guide hole, and applies pressure to the pressure regulating valve.

4. A vertical stopper portion is provided on the side of the lifting and pressing rod, located at one end of the lifting and pressing rod away from the pressure regulating valve, when the lifting and pressing rod moves toward the pressure regulating valve to the set position, The lid assembly for a cooking utensil according to claim 1, characterized in that the vertical stopper portion abuts against the lid body to prevent the lifting pressure rod from coming off the screw structure of the motor.

5. The lid body comprises a front lid and a back lid connected to the front lid, and the pressure adjustment drive module is provided on the front lid. The rear cover is provided with a mounting through-hole corresponding to the lifting pressure rod. The mounting through-hole is provided with a pressure-regulating sealing member that is connected to the region of the back cover located around the mounting through-hole and covers the mounting through-hole. The pressure regulating seal member is located between the lifting and lowering pressurizing rod and the pressure regulating valve. The lid assembly for a cooking utensil according to any one of claims 1 to 4, characterized in that the pressure regulating seal member is configured to elastically deform due to the pressure action of the lifting and lowering pressurizing rod and apply pressure to the pressure regulating valve.

6. The lid body comprises a surface lid and a back lid connected to the surface lid. The lid assembly for a cooking appliance according to any one of claims 1 to 4, characterized in that the pressure adjustment drive module is provided on the back lid.

7. The pressure adjustment drive module further comprises a first microswitch and a second microswitch, A switch trigger is provided on the aforementioned lifting pressure rod. The lid assembly for a cooking appliance according to any one of claims 1 to 4, characterized in that the switch trigger unit is configured to trigger the operation of the first microswitch when the lifting pressure rod moves to a first position in a direction approaching the pressure regulating valve, and to trigger the operation of the second microswitch when the lifting pressure rod moves to a second position in a direction away from the pressure regulating valve.

8. A cooking utensil characterized by comprising a main body and a lid assembly for a cooking utensil according to any one of claims 1 to 4, which is provided on the main body so as to be openable and closable.

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