Pot cover and pressure cooker

Abstract

The utility model discloses a kind of pot cover and pressure cooker, the pot cover includes cover body, the cover body includes inner cover and outer cover, the pot cover is used to buckle cover on pot body, and make the inner cover be placed in the inner cavity of pot body, exhaust inlet is provided on the inner cover, exhaust outlet is provided on the outer cover, curved exhaust passage is formed on the cover body, the exhaust port and the exhaust outlet are communicated by the exhaust passage, the exhaust outlet and the exhaust inlet are distributed along the radial dislocation distribution of the pot cover, gas in pot body inner cavity can pass through the exhaust inlet and exhaust passage and be discharged from exhaust outlet. The utility model avoids water spraying phenomenon under the condition of guaranteeing exhaust rate.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel technology, specifically to a pot lid and a pressure cooker. Background Technology

[0002] Pressure cookers are popular among consumers due to their energy efficiency, time-saving features, and multiple cooking functions. They work by utilizing the physical phenomenon that the boiling point of a liquid increases under higher pressure. By applying pressure to water, the water reaches a higher temperature without boiling, thus accelerating the cooking process. After the food is cooked, to safely open the pressure cooker lid, it's generally necessary to first release the high-pressure gas from the lid. Once the pressure inside the pot has decreased, the lid can be safely opened. However, in existing pressure cooker technology, water tends to spray out from the vent during the release process. Utility Model Content

[0003] This invention aims to address one of the technical problems in related technologies to a certain extent. To this end, this invention provides a pot lid and pressure cooker that can quickly release air while preventing water from spraying out during the venting process.

[0004] To achieve the above objectives, the first aspect of this utility model discloses a pot lid, which includes a lid body, an inner lid, and an outer lid. The pot lid is used to cover the pot body of a pressure cooker, and the inner lid is placed in the inner cavity of the pot body. The inner lid is provided with an exhaust inlet, and the outer lid is provided with an exhaust outlet. A curved exhaust channel is also formed on the lid body. The exhaust inlet and the exhaust outlet are connected through the exhaust channel. The exhaust outlet and the exhaust inlet are radially offset on the pot lid, and the gas in the inner cavity of the pot body can pass through the exhaust inlet and the exhaust channel and be discharged from the exhaust outlet.

[0005] In this technical solution, by setting the exhaust channel as a curved structure, the airflow path inside the pot lid is increased during exhaust. Furthermore, by staggering the exhaust inlet and outlet, water spraying during exhaust can be effectively avoided.

[0006] Furthermore, the outer cover has radial and axial channels. The axial channel is arranged along the axial direction of the lid, and the radial channel is arranged along the radial direction of the lid. The first end of the radial channel forms the exhaust outlet, and the second end of the radial channel communicates with the first end of the axial channel. The second end of the axial channel communicates with the exhaust inlet. The exhaust channels increase the airflow path during exhaust, further reducing water spraying. Furthermore, the pot lid also includes a sealing sleeve disposed between the inner and outer lids. An airflow chamber is formed between the sealing sleeve and the inner lid. The exhaust inlet is disposed within the airflow chamber. The sealing sleeve has an exhaust hole for communicating with the second end of the axial channel. The airflow chamber, the radial channel, and the axial channel together form the exhaust channel. By providing a sealing sleeve and forming an airflow chamber, the gas velocity is reduced, preventing water spraying that could occur due to excessive velocity. This ensures effective exhaust and prevents water vapor from remaining inside the pot lid.

[0007] Furthermore, an installation space is formed between the inner cover and the outer cover. The pot lid also includes an exhaust valve core, and the sealing sleeve and the exhaust valve core are disposed within the installation space. The exhaust valve core is movably disposed relative to the exhaust inlet and can selectively block or open the exhaust inlet. The exhaust valve core allows the exhaust inlet to be opened when exhaust is needed, and to create a pressurized, sealed environment when exhaust is not required, making it convenient to use.

[0008] Furthermore, the exhaust valve core includes a movable sleeve and an elastic element connected to each other. The movable sleeve is disposed on the outer cover and can slide along the axial direction of the lid. One end of the movable sleeve is disposed opposite to the exhaust inlet to form a sealing surface. The elastic element is disposed between the movable sleeve and the outer cover, and the elastic element can be compressed to store force so that the sealing surface presses against and seals the exhaust inlet. The movable sleeve can be slid towards the outer cover under external force, and the elastic element can be compressed to store force.

[0009] Furthermore, the outer cover includes an outer panel, a protruding post, and an annular baffle. The protruding post and the annular baffle are disposed on the end face of the outer panel facing the inner cover. The annular baffle surrounds the protruding post and forms a first gap with the protruding post. The movable sleeve is disposed within the first gap, and a set distance is formed between the top end of the movable sleeve and the outer cover. The movable sleeve is fitted onto the protruding post and forms a second gap with the protruding post. The elastic element is disposed within the second gap to improve the stability of the exhaust valve core installation.

[0010] Furthermore, a guide boss is formed on the annular baffle, and a corresponding groove is formed on the movable sleeve. The guide boss is slidably disposed within the groove along the axial direction of the outer cover. This improves the stability of the exhaust valve core installation and makes the sliding of the exhaust valve core smoother.

[0011] Furthermore, the sealing sleeve is a silicone sleeve, comprising a main body and a movable sealing part. The main body is fixed to the cover, and the movable sealing part is connected to one end of the movable sleeve and forms the sealing surface. By forming a portion of the sealing sleeve as the sealing surface of the exhaust valve core, the sealing sleeve becomes a single, integral structure, which improves the exhaust sealing effect.

[0012] Furthermore, the inner cover includes a base plate, and the pot lid also includes a base fixed to the base plate. The base includes a bottom plate and a guide cylinder protruding from the bottom plate. The bottom plate has the vent hole formed therein. The guide cylinder is arranged around the vent hole. One end of the movable sleeve is inserted into the guide cylinder and has a sealing strip. The sealing strip has the sealing surface formed thereon. A third gap is formed between the guide cylinder and the movable sleeve. The sealing sleeve includes a sleeve body and a sealing extension disposed inside the sleeve body. The sealing extension is placed within the third gap and forms a seal between the outer wall of the movable sleeve and the inner wall of the guide cylinder. This makes the structure of the vent valve core more robust, achieves a better sealing effect on the vent hole, and increases the service life of the vent valve core.

[0013] Furthermore, the exhaust inlet includes multiple exhaust holes, which are located in the radial center region of the pot lid and circumferentially distributed around the axis of the pot lid. By setting the size of the exhaust holes, water spraying is avoided, and by limiting the number of exhaust holes, the exhaust rate can be guaranteed.

[0014] Furthermore, the exhaust valve core and the exhaust port are arranged opposite to each other along the axial direction of the pot lid. The pot lid also includes a driving mechanism disposed on the lid body, which is used to drive the exhaust valve core to slide along the axial direction of the pot lid. This facilitates operation and allows control over the sealing and opening of the exhaust port.

[0015] The second aspect of this utility model discloses a pressure cooker, comprising: Pot body As described in any of the above, the pot lid covers the pot body, the inner lid is opposite to the inner cavity of the pot body, the exhaust inlet is connected to the inner cavity of the pot body, and the inner cavity of the pot body can be connected to the outside through the exhaust inlet, the exhaust channel and the exhaust outlet, so that the gas in the inner cavity of the pot body can be discharged through the pot lid.

[0016] The reasoning process for the beneficial effects of the pressure cooker provided by this utility model and the aforementioned pot lid is similar, and will not be repeated here.

[0017] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a cross-sectional view of the pot lid according to one embodiment of the present invention (vent hole sealed state). Figure 2 This utility model Figure 1 Enlarged view at point A1; Figure 3 This utility model Figure 1 Enlarged view at point A2; Figure 4 This is a cross-sectional view of the pot lid according to one embodiment of the present invention (vent hole sealed state). Figure 5 This is a cross-sectional view of the pot lid according to one embodiment of the present invention (vent hole open). Figure 6 This utility model Figure 5 Enlarged view at point A3; Figure 7 This is a schematic diagram showing the exhaust port on the inner cover in one embodiment of the present invention; Figure 8 This is a schematic diagram showing the exhaust port on the base according to one embodiment of the present invention; Figure 9 This is a structural diagram of the movable sleeve according to one embodiment of the present invention; Figure 10 This is a structural diagram of the sealing sleeve according to one embodiment of the present invention; Figure 11 This is a structural diagram of the drive disk and movable sleeve in one embodiment of the present invention; Figure 12 This is a structural diagram of a pressure cooker according to one embodiment of the present invention. Wherein, 10. Cover; 11. Inner cover; 111. Vent hole; 112. Base plate; 113. Bottom plate; 114. Guide cylinder; 115. Vent groove; 12. Outer cover; 121. Exhaust passage; 1211. Axial passage; 1212. Radial passage; 122. Protruding post; 123. Guide boss; 124. Annular baffle; 125. Outer panel; 13. Sealing sleeve; 131. Vent hole; 132. Sleeve body; 133. Sealing extension; 134. Movable sealing part; 135. Airflow chamber; 14. Exhaust valve core; 141. Movable sleeve; 1411. Flanged edge; 1412. Protrusion; 1413. Arc surface; 1414. Slide groove; 142. Elastic element; 143. Sealing strip; 152. Knob; 151. Drive disc; 1511. Arc-shaped protrusion; 1512. Sloping surface; 20. Pot body Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0020] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in one embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0021] Existing pressure cookers generally only have one vent. To increase the venting rate, the diameter of the vent is usually increased. However, increasing the diameter of the vent can cause water to spray out from the vent, resulting in a poor user experience.

[0022] See appendix Figure 1 , 4 5. One embodiment of this utility model discloses a pot lid, which includes a lid body 10, an inner lid 11 and an outer lid 12. The pot lid is used to cover the pot body 20 of a pressure cooker and to place the inner lid 11 in the inner cavity of the pot body 20. The inner lid 11 is provided with an exhaust inlet and the outer lid 12 is provided with an exhaust outlet. The lid body 10 is also formed with a curved exhaust channel 121. The exhaust inlet and the exhaust outlet are connected through the exhaust channel 121. The exhaust outlet and the exhaust inlet are radially offset in the pot lid. Gas in the inner cavity of the pot body 20 can pass through the exhaust inlet and the exhaust channel 121 and be discharged from the exhaust outlet.

[0023] The lid in this embodiment is a pressure cooker lid, generally used on pressure cookers. In this embodiment, the front of the lid is the side that is placed inside the inner cavity of the pot body 20 when the lid is placed on top of the pot, and the back of the lid is the end face opposite to the front of the lid.

[0024] Existing exhaust valves are generally vertical exhaust channels, which cause the gas inside the pot to be discharged straight up and down during exhaust, easily resulting in water spraying.

[0025] In this embodiment, by making the exhaust channel 121 curved, the airflow path during exhaust can be increased. During exhaust, the airflow can collide with the side wall of the exhaust channel 121, reducing the exhaust injection pressure and avoiding water spraying. In addition, by setting the exhaust inlet and exhaust outlet to be staggered, water spraying can be further reduced compared to a straight exhaust structure.

[0026] To further avoid water spraying during exhaust, one embodiment of this utility model is described in the appendix. Figure 1 , 4 5, 7, 8. The exhaust inlet includes multiple exhaust holes 111, the diameter of which is between 0.3 and 1.2 mm. The multiple exhaust holes 111 are located in the radial center area of ​​the pot lid and are distributed circumferentially around the axis of the pot lid. The number of exhaust holes 111 is 20 to 40. Compared to the existing technology that increases the diameter of the vent hole 111 to increase the venting rate, this embodiment sets the vent hole 111 as multiple holes with smaller diameters. During use, multiple vent holes 111 can release air simultaneously (equivalent to increasing the diameter of the vent hole 111), which can improve the venting speed. In addition, this embodiment limits the diameter of each vent hole 111 (between 0.3mm and 1.2mm), which can reduce water spraying from the vent hole 111 during venting, so that the pot lid can avoid water spraying while maximizing the venting rate.

[0027] This embodiment limits the lower limit of the diameter of the vent hole 111 (0.3 mm). If the diameter of the vent hole 111 is too small, the exhaust rate of each vent hole 111 will decrease accordingly. This lower limit can ensure the rapid exhaust of the vent hole 111. It also limits the upper limit of the diameter of the vent hole 111 (1.2 mm). Since the diameter of water droplets is generally around 1 mm, if the diameter of the vent hole 111 is too large, water spraying is likely to occur. This upper limit can ensure the avoidance of water spraying mentioned above. In this embodiment, the diameter of the vent hole 111 is generally preferably 1 mm.

[0028] This embodiment also includes a movable exhaust valve core 14, which allows the lid of this embodiment to be used with a pressure cooker. During use, the exhaust valve core 14 can be moved to seal the exhaust port 111, facilitating the maintenance of high pressure inside the pressure cooker. (See attached diagram.) Figure 1 , 2 4; The exhaust valve core 14 can also be moved to the position where the exhaust port 111 is opened, at which point exhaust can be performed. See Appendix. Figure 5 .

[0029] It should be noted that this embodiment has multiple ways of setting the vent 111 on the pot lid. In actual setting, the vent 111 can be set in the central area of ​​the pot lid, or it can be set at the edge of the pot lid that is off-center. Moreover, multiple vents 111 can be set in the same area (for easy production and control of the seal opening), or they can be set in different parts of the pot lid (for better venting effect).

[0030] Furthermore, this utility model does not specify how the multiple exhaust holes 111 are arranged. For example, the multiple exhaust holes 111 can be arranged linearly or circumferentially.

[0031] In this embodiment, the vent 111 can be directly opened on the cover 10 or on a component that is assembled with the cover. As long as the vent 111 can achieve the above-mentioned venting effect, it is sufficient.

[0032] When a pressure cooker is in use, the high-pressure gas inside the pot body 20 usually gathers in the middle part of the pot body 20. In addition, setting the vent 111 in the center area of ​​the lid can better release the gas. Setting the vent 111 in a circular distribution can arrange more vent 111 in a limited space, thereby improving the venting effect.

[0033] As one embodiment of this utility model, see the appendix. Figure 1 , 4 5, 6. The outer cover 12 has a radial channel 1212 and an axial channel 1211. The axial channel 1211 is arranged along the axial direction of the pot cover, and the radial channel 1212 is arranged along the radial direction of the pot cover. The first end of the radial channel 1212 forms an exhaust outlet. The second end of the radial channel 1212 is connected to the first end of the axial channel 1211. The second end of the axial channel 1211 is connected to the exhaust inlet to achieve the purpose of exhaust.

[0034] Furthermore, the pot lid also includes a sealing sleeve 13 disposed between the inner lid 11 and the outer lid 12. An airflow chamber 135 is formed between the sealing sleeve 13 and the inner lid 11. An exhaust inlet is disposed in the airflow chamber 135. An exhaust hole 131 is provided on the sealing sleeve 13 for communicating with the second end of the axial channel 1211. The airflow chamber 135, the radial channel 1212 and the axial channel 1211 together form an exhaust channel 121.

[0035] In some embodiments, such as Figure 6 As shown, the sealing sleeve 13 is roughly L-shaped to further extend the airflow path; at the same time, the exhaust channel 121 in this embodiment is set as an approximately “Z” shaped structure as shown in the attached figure. When venting, the exhaust channel 121 is connected to the exhaust inlet and exhaust outlet to vent. The setting of the exhaust channel 121 can increase the airflow path of the pot lid when venting. The increase in the airflow path can block some water vapor and further reduce the water spray phenomenon.

[0036] See appendix Figure 6 The exhaust channel 121 includes a radial channel 1212 and an axial channel 1211 disposed on the outer cover 12 of the pot lid. The axial channel 1211 is disposed along the axial direction of the pot lid and communicates with the sealing sleeve 13. The radial channel 1212 is disposed radially along the pot lid, with one end of the radial channel 1212 penetrating through the front of the lid body 10, and the other end of the radial channel 1212 communicating with the axial channel 1211. In this embodiment, during exhaust, the gas is finally discharged radially along the pot lid, as shown in the attached figure. Figure 6 The exhaust path shown (arrows indicate this) in this embodiment is a curved path. During exhaust, the gas changes direction multiple times. By changing the gas flow direction, the ejection speed is reduced, preventing burns to the user. Furthermore, setting the exhaust direction radially better meets the user's needs.

[0037] An installation space is formed between the inner cover 11 and the outer cover 12 in one embodiment of the present invention. The pot lid also includes an exhaust valve core 14. The sealing sleeve 13 and the exhaust valve core 14 are disposed in the installation space. The exhaust valve core 14 is movably disposed in the installation space. The exhaust valve core 14 is disposed opposite to a plurality of exhaust inlets and can block the exhaust inlets. The exhaust valve core 14 can open the exhaust inlets when subjected to external force.

[0038] The exhaust valve core 14 includes a movable sleeve 141 and an elastic element 142. The movable sleeve 141 is slidably disposed on the outer cover 12 along the axial direction of the pot lid. One end of the movable sleeve 141 is opposite to the exhaust inlet and forms a sealing surface. The elastic element 142 is disposed between the movable sleeve 141 and the outer cover 12. The elastic element 142 causes the sealing surface to press against and seal the exhaust inlet. The movable sleeve 141 can be slid toward the outer cover 12 under external force, and the elastic element 142 is compressed and stores force.

[0039] The exhaust valve core 14 is disposed between the exhaust channel 121 and the exhaust hole 111. The exhaust valve core 14 achieves the connection or disconnection of the exhaust channel 121 and the exhaust hole 111 by sealing the exhaust hole 111. In this embodiment, a sealing sleeve 13 is also provided. The sealing sleeve 13 serves as an intermediate component connecting the exhaust hole 111 and the exhaust channel 121. An airflow chamber 135 is formed on the sealing sleeve 13. The airflow chamber, the radial channel, and the axial channel together form the exhaust channel. In this way, during the exhaust process, the problem of poor exhaust effect caused by docking installation and assembly problems is avoided, and water vapor is prevented from remaining inside the pot lid.

[0040] In this embodiment, the specific number of exhaust channels 121 is not specifically limited. In actual installation, exhaust channels 121 can be set to one, two, or more. See Appendix. Figure 1 , 4 Figure 5 shows the structure of the two exhaust channels 121. The two exhaust channels 121 are symmetrically distributed and exhaust gas from two directions. Similarly, the sealing sleeve 13 can be provided with exhaust holes 131 that are connected to the two axial channels respectively to improve exhaust efficiency.

[0041] As one embodiment of this utility model, see the appendix. Figure 1 , 4 5. The lid 10 includes an inner lid 11 and an outer lid 12. An exhaust hole 111 is formed on the inner lid 11. An installation space is formed between the inner lid 11 and the outer lid 12. A sealing sleeve 13 and an exhaust valve core 14 are disposed within the installation space. The exhaust valve core 14 includes a movable sleeve 141 and an elastic element 142 connected to each other. The movable sleeve 141 is slidably disposed on the outer lid 12 along the axial direction of the lid. One end of the movable sleeve 141 is opposite to the exhaust hole 111 to form a sealing surface. The elastic element 142 is disposed between the movable sleeve 141 and the outer lid 12. The elastic element 142 can be compressed and stored to cause the sealing surface to press against and seal the exhaust hole 111 (understandably, the sliding of the movable sleeve 141 towards the outer lid 12 can compress and store the elastic element 142). In this embodiment, the lid 10 is configured as an inner lid 11 and an outer lid 12. The inner lid 11 and the outer lid 12 are assembled together to form a lid 10 with a certain thickness. The installation space between the inner lid 11 and the outer lid 12 facilitates the assembly of various components in the pot lid. In this embodiment, the movable sleeve 141 is slidably disposed on the outer lid 12 along the axial direction of the pot lid, and an elastic element 142 is provided between the movable sleeve 141 and the outer lid 12. The provision of the elastic element 142 enables the exhaust valve core 14 to maintain the state of sealing the exhaust hole 111 under the elastic action, thereby improving the sealing effect of the pressure cooker.

[0042] In addition, the exhaust port 111 in this utility model is provided on the inner cover 11, and the sealing sleeve 13 is provided in the installation space between the inner cover 11 and the outer cover 12. When venting, the gas passes through the exhaust port 111 of the inner cover 11 and enters the airflow chamber 135. Since the airflow chamber 135 has a certain volume, the high-speed gas discharged from the exhaust port 111 will be slowed down in the airflow chamber 135, which can also avoid the water spray phenomenon that may be caused by the high-speed discharge of gas.

[0043] As one embodiment of this utility model, see the appendix. Figure 1 The outer cover 12 includes an outer panel 125, a protrusion 122, and an annular baffle 124. The protrusion 122 and the annular baffle 124 are disposed on the end face of the outer panel 125 facing the inner cover 11. The annular baffle 124 surrounds the protrusion 122 and forms a first gap with the protrusion 122. A movable sleeve 141 is disposed within the first gap. A predetermined distance H is formed between the top end of the movable sleeve 141 and the outer cover 12. (See attached diagram) Figure 3 The movable sleeve 141 is fitted onto the protrusion 122 and forms a second gap with the protrusion 122. The elastic element 142 is disposed in the second gap. A guide protrusion 123 is formed on the annular baffle 124. A sliding groove 1414 corresponding to the guide protrusion 123 is formed on the movable sleeve 141. The guide protrusion 123 is slidably disposed in the sliding groove 1414 along the axial direction of the outer cover 12.

[0044] This embodiment defines the installation relationship between the exhaust valve core 14 (movable sleeve 141 and elastic element 142) and the outer cover 12. The protruding post 122 and the annular baffle 124 limit and guide the movable sleeve 141, making its installation and movement more stable and smooth. The elastic element 142 is positioned within the second interval. During the movement of the movable sleeve 141, the deformation of the elastic element 142 occurs within the second interval. Thus, the movable sleeve 141 and the protruding post 122 provide certain constraints on the elastic element 142, preventing possible twisting due to deformation. In this embodiment, the elastic element 142 can be configured as a spring. When configured as a spring, the spring can be fitted onto the protrusion 122, which allows the protrusion 122 to better limit the spring and improve its performance. It should be noted that the elastic element 142 in this embodiment is installed with a certain preset pressure. The preset pressure of the elastic element 142 ultimately serves as the sealing pressure for the exhaust valve core 14 to seal the exhaust port 111. When the movable sleeve 141 opens the exhaust port 111, the elastic element 142 will be further compressed and store force based on the preset pressure. When it is not necessary to open the exhaust port 111, the stored force and the preset pressure will cause the elastic element 142 to automatically return to the state where the exhaust valve core 14 initially seals the exhaust port 111.

[0045] As one embodiment of this utility model, see the appendix. Figure 10 The sealing sleeve 13 is a silicone sleeve. The sealing sleeve 13 includes a main body and a movable sealing part 134. The main body is fixed on the cover 10, and the movable sealing part 134 is connected to one end of the movable sleeve 141 and forms a sealing surface.

[0046] In this embodiment, a portion of the sealing sleeve 13 is formed as the sealing surface of the exhaust valve core 14, so that the sealing sleeve 13 is an integral structure, which can improve the exhaust sealing effect.

[0047] in Figure 1 , 4 The middle position represents the sealed state in this embodiment. In the sealed state, one end of the movable sleeve 141 presses the sealing element against the vent hole 111 to block the vent hole 111. Figure 5 , 6 The middle part shows the open state of the exhaust port 111. When the exhaust port 111 is open, the gas enters the exhaust port 111 from one side along the direction indicated by the arrow in the figure, and then enters the airflow chamber 135. After that, it is discharged from the back of the cover 10 through the air outlet 131 of the sealing sleeve 13 and the exhaust channel 121.

[0048] As one embodiment of this utility model, see the appendix. Figure 1 , 8 The inner cover 11 includes a base plate 112, and the pot lid also includes a base. The base is fixed to the base plate 112. The base includes a bottom plate 113 and a guide cylinder 114 protruding from the bottom plate 113. An exhaust hole 111 is formed on the bottom plate 113. The guide cylinder 114 is arranged around the exhaust inlet. One end of the movable sleeve 141 is inserted into the guide cylinder 114 and a sealing strip 143 is provided. A sealing surface is formed on the sealing strip 143. A third gap is formed between the guide cylinder 114 and the movable sleeve 141. The sealing sleeve 13 includes a sleeve body 132 and a sealing extension 133 disposed inside the sleeve body 132. The sealing extension 133 is placed in the third gap and forms a seal between the outer wall of the movable sleeve 141 and the inner wall of the guide cylinder 114.

[0049] In this embodiment, the base is fixed on the substrate 112 and an exhaust hole 111 is formed on the base. The base also includes a guide cylinder 114. The sealing sleeve 13 is configured as an annular structure surrounding the guide cylinder 114 and the movable sleeve 141. In this embodiment, the sealing sleeve 13 seals the space between the movable sleeve 141 and the guide cylinder 114 and together form an airflow chamber 135. It should be noted that the seal between the sealing sleeve 13 (sealing extension 133) and the guide cylinder 114 is a static seal, and the seal between the sealing sleeve 13 (sealing extension 133) and the movable sleeve 141 is a dynamic seal.

[0050] In this embodiment, the base and the exhaust valve core 14 can be manufactured separately as an exhaust valve structure. In use, it is only necessary to fix the base and the base plate 112 on the inner cover 11.

[0051] It is conceivable that, in actual installation, the vent 111 can be directly opened on the inner cover 11 (see Appendix). Figure 7 At this time, the inner cover 11 replaces the function of the base mentioned above, so there is no need to set up a separate base, which can reduce the number of pot lids.

[0052] To facilitate the sealing and opening of the vent valve core 14 and the vent hole 111, in one embodiment of this utility model, the vent valve core 14 and the vent hole 111 are arranged opposite each other along the axial direction of the pot lid. The pot lid also includes a driving mechanism disposed on the lid body 10, which is used to drive the vent valve core 14 to slide along the axial direction of the pot lid. This facilitates operation and allows control over the sealing and opening of the vent hole 111.

[0053] There are various embodiments of how the drive mechanism moves the exhaust valve core 14 along the axial direction of the pot lid, see Appendix Figure 1 , 11 The present invention includes a drive mechanism comprising a knob 152 and a drive disk 151. The operating end of the knob 152 protrudes from the outer cover 12, and the drive disk 151 can be disposed between the inner cover 11 and the outer cover 12. One end of the knob 152 is connected to the drive disk 151, so that rotating the knob 152 can drive the drive disk 151 to rotate together. The top edge of the movable sleeve 141 in the exhaust valve core 14 can be provided with an outwardly flanged edge 1411, and a protrusion 1412 can be provided at the bottom of the flanged edge 1411. The drive disk 151 can be disposed below the flanged edge 1411. An arc-shaped protrusion 1511 opposite to the protrusion 1412 can be provided on the drive disk 151. The arc-shaped protrusion 1511 and the protrusion 1412 are provided with a matching inclined surface 1512 or a matching structure of inclined surface 1512 and arc surface 1413. When the knob 152 is rotated, the drive disk 151 rotates, and the movable sleeve 141 can be pushed to slide upward through the matching structure of the arc-shaped protrusion 1511 and the inclined surface 1512 on the protrusion 1412. When the knob 152 is rotated in the opposite direction, the movable sleeve 141 can move downward under the action of the elastic element 142.

[0054] As shown in the appendix Figure 11 As shown, multiple arc-shaped protrusions 1511 can be provided in the circumferential direction. In this embodiment, the arc-shaped protrusions 1511 are provided in three segments on the same circumference. The corresponding protrusions 1412 on the movable sleeve 141 can also be provided in multiple ways corresponding to the arc-shaped protrusions 1511.

[0055] Of course, it is conceivable that the sliding mechanism of the exhaust valve core 14 can also be configured as a pull, a press, or other form, which will not be elaborated here.

[0056] The second aspect of this utility model discloses a pressure cooker, see appendix. Figure 12 The invention includes a lid and a pot body 20. The lid is a first-aspect lid, which covers the pot body 20. The inner lid 11 is opposite to the inner cavity of the pot body 20. The exhaust inlet is connected to the inner cavity of the pot body 20. The inner cavity of the pot body 20 can be connected to the outside through the exhaust inlet, the exhaust channel 121 and the exhaust outlet, so that the gas in the inner cavity of the pot body 20 can be discharged through the lid.

[0057] When the pressure cooker of this utility model is stewing food, the exhaust valve core 14 is in the position of sealing the exhaust hole 111. After the food is stewed, the exhaust valve core 14 is operated to open the exhaust hole 111 to release the exhaust. Through the curved design of the exhaust channel 121, the staggered distribution of the exhaust inlet and exhaust outlet, and the setting of the size and number of exhaust holes 111, the exhaust rate can be guaranteed while avoiding water spraying during the exhaust process.

[0058] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A pot lid, characterized in that, The pot lid includes a lid body (10), which includes an inner lid (11) and an outer lid (12). The pot lid is used to cover the pot body and place the inner lid (11) in the inner cavity of the pot body. The inner lid (11) is provided with an exhaust inlet, and the outer lid (12) is provided with an exhaust outlet. The lid body (10) forms a curved exhaust channel (121). The exhaust inlet and the exhaust outlet are connected through the exhaust channel (121). The exhaust outlet and the exhaust inlet are radially offset along the pot lid. Gas in the inner cavity of the pot can pass through the exhaust inlet and the exhaust channel (121) and be discharged from the exhaust outlet.

2. The pot lid according to claim 1, characterized in that, The outer cover (12) has a radial channel (1212) and an axial channel (1211) formed on it. The axial channel (1211) is arranged along the axial direction of the pot cover, and the radial channel (1212) is arranged along the radial direction of the pot cover. The first end of the radial channel (1212) forms the exhaust outlet, and the second end of the radial channel (1212) is connected to the first end of the axial channel (1211). The second end of the axial channel (1211) is connected to the exhaust inlet.

3. The pot lid according to claim 2, characterized in that, The pot lid also includes a sealing sleeve (13) disposed between the inner lid (11) and the outer lid (12). An airflow chamber (135) is formed between the sealing sleeve (13) and the inner lid (11). The exhaust inlet is disposed in the airflow chamber (135). The sealing sleeve (13) is provided with an exhaust hole (131) for communicating with the second end of the axial channel (1211). The airflow chamber (135), the radial channel (1212), and the axial channel (1211) together form the exhaust channel (121).

4. The pot lid according to claim 3, characterized in that, The sealing sleeve (13) is generally L-shaped.

5. The pot lid according to claim 3, characterized in that, An installation space is formed between the inner cover (11) and the outer cover (12). The pot cover also includes an exhaust valve core (14). The sealing sleeve (13) and the exhaust valve core (14) are disposed in the installation space. The exhaust valve core (14) is movably disposed relative to the exhaust inlet and can selectively block or open the exhaust inlet.

6. The pot lid according to claim 5, characterized in that, The exhaust valve core (14) includes a movable sleeve (141) and an elastic element (142) connected to each other. The movable sleeve (141) is disposed on the outer cover (12) and can slide along the axial direction of the pot cover. One end of the movable sleeve (141) is disposed opposite to the exhaust inlet to form a sealing surface. The elastic element (142) is disposed between the movable sleeve (141) and the outer cover (12), and the elastic element (142) can be compressed and stored to make the sealing surface press against and seal the exhaust inlet.

7. The pot lid according to claim 6, characterized in that, The outer cover (12) includes an outer panel (125), a protrusion (122), and an annular baffle (124). The protrusion (122) and the annular baffle (124) are disposed on the end face of the outer panel (125) facing the inner cover (11). The annular baffle (124) surrounds the protrusion (122) and forms a first gap with the protrusion (122). The movable sleeve (141) is disposed in the first gap, and a set distance is formed between the top end of the movable sleeve (141) and the outer cover (12). The movable sleeve (141) is fitted on the protrusion (122) and forms a second gap with the protrusion (122). The elastic element (142) is disposed in the second gap.

8. The pot lid according to claim 7, characterized in that, A guide boss (123) is formed on the annular baffle (124), and a sliding groove (1414) corresponding to the guide boss (123) is formed on the movable sleeve (141). The guide boss (123) is slidably disposed in the sliding groove (1414) along the axial direction of the outer cover (12).

9. The pot lid according to claim 6, characterized in that, The sealing sleeve (13) is a silicone sleeve. The sealing sleeve (13) includes a main body and a movable sealing part (134). The main body is fixed on the cover (10). The movable sealing part (134) is connected to one end of the movable sleeve (141) and forms the sealing surface.

10. The pot lid according to claim 6, characterized in that, The inner cover (11) includes a base plate (112), and the pot lid also includes a base. The base is fixed to the base plate (112). The base includes a bottom plate (113) and a guide cylinder (114) protruding from the bottom plate (113). The bottom plate (113) has the exhaust inlet formed thereon. The guide cylinder (114) is arranged around the exhaust inlet. One end of the movable sleeve (141) is inserted into the guide cylinder (114) and a sealing strip (143) is provided thereon. The sealing strip (143) has the sealing surface formed thereon. A third gap is formed between the guide cylinder (114) and the movable sleeve (141). The sealing sleeve (13) includes a sleeve body (132) and a sealing extension (133) disposed inside the sleeve body (132). The sealing extension (133) is placed in the third gap and forms a seal between the outer wall of the movable sleeve (141) and the inner wall of the guide cylinder (114).

11. The pot lid according to claim 5, characterized in that, The exhaust inlet includes a plurality of exhaust holes (111), which are disposed in the radial center region of the pot lid and are circumferentially distributed around the axis of the pot lid.

12. The pot lid according to claim 11, characterized in that, The exhaust valve core (14) and the exhaust hole (111) are arranged opposite to each other along the axial direction of the pot lid. The pot lid also includes a driving mechanism disposed on the lid body (10). The driving mechanism is used to drive the exhaust valve core (14) to slide along the axial direction of the pot lid.

13. A pressure cooker, characterized in that, include: Pot body (20) The pot lid as described in any one of claims 1-12, wherein the pot lid covers the pot body (20), the inner lid (11) is opposite to the inner cavity of the pot body (20), the exhaust inlet is connected to the inner cavity of the pot body (20), and the inner cavity of the pot body (20) can be connected to the outside through the exhaust inlet, the exhaust channel (121) and the exhaust outlet, so that the gas in the inner cavity of the pot body (20) can be discharged through the pot lid.

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