Pressure limiting valve assembly, cover body assembly and cooking utensil

Abstract

The utility model provides a pressure-limiting valve assembly, a cover body assembly and a cooking utensil wherein the pressure-limiting valve assembly comprises: an inner valve comprising an inner valve body, and an upper baffle ring and a lower baffle ring arranged on the inner valve body, the lower baffle ring being detachably connected with the inner valve body; the outer valve is movably arranged on the outer side of the inner valve in a sleeving mode in the axial direction of the inner valve, the outer valve is located above the lower baffle ring, the outer valve comprises an outer valve body and an adjusting protrusion arranged on the inner surface of the outer valve body, the adjusting protrusion extends into the position between the upper baffle ring and the lower baffle ring, and the height of the adjusting protrusion is smaller than the distance between the upper baffle ring and the lower baffle ring. According to the technical scheme, the problems that food residues are easily reserved between the outer valve and the inner valve and are difficult to clean in the prior art can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliances, and in particular to a pressure limiting valve assembly, a cover assembly and a cooking utensil. Background Art

[0002] In the related art, a pressure-limiting valve assembly with a multi-stage pressure regulating function enables the cooking appliance to have two cooking modes, namely, pressure-free cooking and pressure cooking, or three cooking modes, namely, pressure-free cooking, low-pressure cooking and high-pressure cooking, thereby enriching the functions of the cooking appliance and facilitating the use of the user.

[0003] The pressure limiting valve assembly with multi-stage pressure regulating function generally includes an inner valve and an outer valve, and the user can switch between the above cooking modes according to the relative position relationship between the inner valve and the outer valve. After the existing pressure limiting valve with multi-stage pressure regulating function is used for a period of time, food residues are easily left between the outer valve and the inner valve, and it is difficult for the user to clean. Utility Model Content

[0004] The main purpose of the utility model is to provide a pressure limiting valve assembly, a cover assembly and a cooking utensil to solve the problem in the related art that food residues are easily left between the outer valve and the inner valve and are difficult to clean.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a pressure limiting valve assembly is provided, including: an inner valve, including an inner valve body and an upper retaining ring and a lower retaining ring arranged on the inner valve body, the lower retaining ring being detachably connected to the inner valve body; an outer valve, movably sleeved on the outer side of the inner valve along the axial direction of the inner valve, the outer valve being located above the lower retaining ring, the outer valve including an outer valve body and an adjusting protrusion arranged on the inner surface of the outer valve body, the adjusting protrusion extending between the upper retaining ring and the lower retaining ring, and the height of the adjusting protrusion being less than the distance between the upper retaining ring and the lower retaining ring.

[0006] By applying the technical solution of the utility model, the adjustment protrusion on the outer valve can move between the upper retaining ring and the lower retaining ring of the inner valve, so that the outer valve and the inner valve have a variety of matching states to achieve multi-stage pressure regulation. Among them, the outer valve is located above the lower retaining ring, that is, the lower retaining ring is exposed to the outer valve and the lower retaining ring is detachably connected to the inner valve body. When the user needs to clean the pressure-limiting valve assembly, the lower retaining ring can be removed, and then the other components of the inner valve can be pulled out from the top of the outer valve to achieve separation between the inner valve and the outer valve, which is convenient for the user to clean the inner valve and the outer valve separately. Therefore, the technical solution of the present application can effectively solve the problem of food residues being easily left between the outer valve and the inner valve and being difficult to clean in the related art.

[0007] Furthermore, a threaded connection structure is provided between the inner valve body and the lower retaining ring, and the threaded connection structure includes an external thread and an internal thread that cooperate with each other, wherein one of the external thread and the internal thread is provided on the inner valve body, and the other of the external thread and the internal thread is provided on the lower retaining ring. The connection between the inner valve body and the lower retaining ring is achieved by the external thread and the internal thread that cooperate with each other, which has the advantages of simple structure and easy disassembly and assembly of the pressure limiting valve assembly.

[0008] Furthermore, the external thread includes a plurality of first thread segments spaced apart in the circumferential direction of the pressure-limiting valve assembly, and the ends of two adjacent first thread segments are stacked in the vertical direction of the pressure-limiting valve assembly to form a first threaded gap; the internal thread includes a plurality of second thread segments spaced apart in the circumferential direction of the pressure-limiting valve assembly, and the number of the second thread segments is equal to the number of the first thread segments, and the ends of two adjacent second thread segments are stacked in the vertical direction of the pressure-limiting valve assembly to form a second threaded gap. This arrangement allows the user to complete the screwing operation by rotating a first thread segment by a rotation angle when disassembling and assembling the inner valve body and the lower retaining ring, without having to rotate at least one full circle, which is convenient for the user.

[0009] Further, the rotation angle of the first thread segment is between 90° and 270°; the rotation angle of the second thread segment is between 90° and 270°; and / or, the number of the first thread segments is between 2 and 5; and / or, the absolute value of the difference between the width of the first thread gap and the width of the second thread gap is greater than 0 mm and less than or equal to 1 mm. The rotation angle of the first thread segment and the rotation angle of the second thread segment are within the above range, so that the user only needs to screw once to realize the disassembly and assembly operation between the inner valve body and the lower retaining ring, without the need for secondary screwing, which simplifies the user's operation. The number of the first thread segment and the number of the second thread segment are within the above range, which can simultaneously ensure the connection stability of the external thread and the internal thread and the convenience of the user's operation when disassembling and assembling the inner valve body and the lower retaining ring. The first thread gap and the second thread gap have a width difference, so that the user will tighten the lower retaining ring onto the inner valve body, thereby ensuring the stability of the connection between the inner valve body and the lower retaining ring.

[0010] Furthermore, the inner valve can be sealed above the exhaust pipe of the cover assembly, and the inner valve also includes a rotating air guide structure arranged above the inner valve body, and the steam discharged from the exhaust pipe can be sprayed to the rotating air guide structure and drive the inner valve to rotate. The setting of the rotating air guide structure facilitates the user to judge whether the pressure limiting valve assembly is in the exhaust state through the state of the inner valve, thereby enhancing the user's perception of the cooking process and improving the user's experience.

[0011] Further, the rotating air guide structure includes a top plate, an air guide side plate connected to the top plate, and an exhaust port arranged on the air guide side plate, the extension direction of the exhaust port is arranged to intersect with the radial direction of the rotating air guide structure, the pressure limiting valve assembly also includes a plugging member arranged below the top plate and capable of blocking the top of the exhaust channel of the exhaust pipe, and when the pressure limiting valve assembly is lifted up, the exhaust port is directly connected to the exhaust channel of the exhaust pipe. During exhaust, steam is sprayed onto other structures outside the rotating air guide structure along the extension direction of the exhaust port, and the steam exerts a reverse thrust on the rotating air guide structure that is opposite to the spray direction of the steam, and the reverse thrust has a component force along the tangential direction of the rotating air guide structure, which can drive the rotating air guide structure and the inner valve having the rotating air guide structure to rotate. When the pressure limiting valve assembly is lifted up, the exhaust port is directly connected to the exhaust channel of the exhaust pipe, and such an arrangement allows the steam to directly pass through the exhaust channel to reach the exhaust port, which is conducive to the smooth circulation of the steam, so that the steam can also rinse the interior of the inner valve during the process of driving the inner valve to rotate, and take out the food residues that may remain inside the inner valve.

[0012] Furthermore, the spiral direction of the external thread is opposite to the rotation direction of the inner valve when rotating. This arrangement can prevent the lower retaining ring from being separated from the inner valve body during the rotation of the inner valve, thereby ensuring the structural stability of the pressure limiting valve assembly during use.

[0013] Furthermore, the outer surface of the inner valve body is provided with mutually connected vertical groove sections and transverse groove sections, the lower end of the vertical groove section penetrates the lower surface of the inner valve body, the first end of the transverse groove section is connected with the upper end of the vertical groove section, and the second end of the transverse groove section is a closed end, and the inner surface of the lower retaining ring is provided with a slider that can move in the transverse groove section and the vertical groove section. The lower retaining ring is detachably connected to the inner valve body through the mutually matched sliding groove and slider, which has the advantages of simple structure and easy disassembly and assembly of the pressure limiting valve assembly.

[0014] Further, the upper and lower wall surfaces of the second end of the transverse groove section are respectively provided with a first matching rib, and the upper and lower surfaces of the slider are respectively provided with a second matching rib, the first matching rib and the second matching rib are interference-fitted, and the interference amount between the first matching rib and the second matching rib is between 0.1mm and 0.2mm; and / or, the inner valve can be blocked above the exhaust pipe of the cover assembly, and the inner valve also includes a rotating air guide structure arranged above the inner valve body, and the steam discharged from the exhaust pipe can be sprayed to the rotating air guide structure and drive the inner valve to rotate, and the direction from the first end to the second end of the transverse groove section is opposite to the rotation direction of the inner valve when it rotates. After the lower retaining ring is installed in place, the first matching rib and the second matching rib are stop-retracted to ensure the installation firmness between the lower retaining ring and the inner valve body. The setting of the extension direction of the transverse groove section can prevent the lower retaining ring from being separated from the inner valve body during the rotation of the inner valve, thereby ensuring the structural stability of the pressure limiting valve assembly during use.

[0015] According to another aspect of the utility model, a cover assembly is provided, comprising a cover, an exhaust pipe passing through the cover, and a pressure limiting valve assembly arranged above the exhaust pipe, wherein the pressure limiting valve assembly is the above-mentioned pressure limiting valve assembly. The above-mentioned pressure limiting valve assembly can effectively solve the problem in the related art that food residues are easily left between the outer valve and the inner valve and it is difficult to clean, and the cover assembly with the above-mentioned pressure limiting valve assembly also has the above-mentioned advantages.

[0016] Furthermore, an elastic retaining ring is provided on the exhaust pipe, and an inner retaining ring is provided at the lower end of the inner surface of the inner valve body, and the inner diameter of the inner retaining ring is smaller than the outer diameter of the elastic retaining ring. By providing the elastic retaining ring and the inner retaining ring, a detachable connection between the pressure limiting valve assembly and the exhaust pipe and the prevention of the pressure limiting valve assembly from falling off during cooking can be achieved. In addition, the inner retaining ring is provided on the inner surface of the inner valve body, so that when the pressure limiting valve assembly and the exhaust pipe are disassembled and assembled, the interference compression between the elastic retaining ring and the inner retaining ring will not affect the connection stability between the lower retaining ring and the inner valve body, thereby preventing the lower retaining ring from loosening.

[0017] According to another aspect of the utility model, a cooking utensil is provided, comprising a cover assembly, wherein the cover assembly is the above-mentioned cover assembly. The above-mentioned cover assembly can effectively solve the problem in the related art that food residues are easily left between the outer valve and the inner valve and it is difficult to clean, and the cooking utensil with the above-mentioned cover assembly also has the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A cross-sectional schematic diagram of a first embodiment of a pressure limiting valve assembly according to the utility model is shown;

[0020] Figure 2 Shows Figure 1 A schematic diagram of the exploded structure of an inner valve of a pressure limiting valve assembly;

[0021] Figure 3 Shows Figure 1 A schematic side view of a partial structure of an inner valve of a pressure limiting valve assembly;

[0022] Figure 4 Shows Figure 3 A three-dimensional structural schematic diagram of a partial structure of an inner valve;

[0023] Figure 5 Shows Figure 1 A schematic diagram of the three-dimensional structure of the lower retaining ring of the pressure limiting valve assembly;

[0024] Figure 6 A schematic diagram of the exploded structure of the inner valve of the second embodiment of the pressure limiting valve assembly according to the utility model is shown;

[0025] Figure 7 Shows Figure 6 A three-dimensional structural schematic diagram of a partial structure of an inner valve of a pressure limiting valve assembly;

[0026] Figure 8 Shows Figure 6 A schematic diagram of the three-dimensional structure of the lower retaining ring of the pressure limiting valve assembly;

[0027] Fig. 9 A three-dimensional structural schematic diagram of an embodiment of a cooking utensil according to the utility model is shown;

[0028] Fig.10 Shows Fig. 9 An enlarged view of a cooking appliance at point A;

[0029] Fig.11 Shows Fig. 9 A schematic cross-sectional view of an inner valve, an outer valve and an exhaust pipe of a cooking appliance.

[0030] The above drawings include the following reference numerals:

[0031] 10. Inner valve; 11. Inner valve body; 12. Upper retaining ring; 13. Lower retaining ring; 131. Inner thread; 1311. Second thread section; 1312. Second threaded gap; 132. Sliding block; 1321. Second matching rib; 14. Outer thread; 141. First thread section; 142. First threaded gap; 15. Rotating air guide structure; 151. Top plate; 152. Air guide side plate; 153. Exhaust port; 161. Vertical slot section; 162. Horizontal slot section; 1621. First matching rib; 17. Blocking piece; 171. Blocking ball; 18. Inner retaining ring;

[0032] 20. External valve; 21. External valve body; 22. Adjusting protrusion;

[0033] 30. Exhaust pipe; 31. Elastic retaining ring;

[0034] 40. Cover body;

[0035] 50. Rotating operating member;

[0036] 60. Pot body assembly;

[0037] a, rotation angle of the first thread segment; P1, width of the first threading gap; P2, width of the second threading gap. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0041] Figures 1 to 5 A structural schematic diagram of a first embodiment of a pressure-limiting valve assembly according to the present application is shown.

[0042] like Figures 1 to 5 As shown, the first embodiment of the pressure limiting valve assembly of the present application includes: an inner valve 10 and an outer valve 20. The inner valve 10 includes an inner valve body 11 and an upper retaining ring 12 and a lower retaining ring 13 arranged on the inner valve body 11, and the lower retaining ring 13 is detachably connected to the inner valve body 11; the outer valve 20 is movably sleeved on the outer side of the inner valve 10 along the axial direction of the inner valve 10, and the outer valve 20 is located above the lower retaining ring 13. The outer valve 20 includes an outer valve body 21 and an adjusting protrusion 22 arranged on the inner surface of the outer valve body 21, and the adjusting protrusion 22 extends between the upper retaining ring 12 and the lower retaining ring 13, and the height of the adjusting protrusion 22 is less than the distance between the upper retaining ring 12 and the lower retaining ring 13.

[0043] By applying the technical solution of this embodiment, the regulating protrusion 22 on the outer valve 20 can move between the upper retaining ring 12 and the lower retaining ring 13 of the inner valve 10, so that the outer valve 20 and the inner valve 10 have multiple matching states to achieve multi-stage pressure regulation. Among them, the outer valve 20 is located above the lower retaining ring 13, that is, the lower retaining ring 13 is exposed to the outer valve and the lower retaining ring 13 is detachably connected to the inner valve body 11. When the user needs to clean the pressure limiting valve assembly, the lower retaining ring 13 can be removed, and then the other components of the inner valve 10 can be pulled out from the top of the outer valve 20 to achieve the separation between the inner valve 10 and the outer valve 20, so that the user can clean the inner valve 10 and the outer valve 20 separately. Therefore, the technical solution of this embodiment can effectively solve the problem that food residues are easily left between the outer valve and the inner valve in the related art and it is difficult to clean.

[0044] It should be noted that when the pressure-limiting valve assembly of this embodiment is applied to cooking appliances, the outer valve 20 can move in the height direction and has an exhaust position in which the inner valve 10 is lifted by pressing against the upper baffle ring 12, a low-pressure position located between the upper baffle ring 12 and the lower baffle ring 13 and separated from both the upper baffle ring 12 and the lower baffle ring 13 so that only the inner valve 10 is pressed above the exhaust pipe 30, and a high-pressure position in which the inner valve 10 and the outer valve 20 are pressed together above the exhaust pipe 30 by pressing against the lower baffle ring 13.

[0045] like Figures 2 to 5 As shown, a threaded connection structure is provided between the inner valve body 11 and the lower retaining ring 13, and the threaded connection structure includes an outer thread 14 and an inner thread 131 that cooperate with each other, wherein one of the outer thread 14 and the inner thread 131 is provided on the inner valve body 11, and the other of the outer thread 14 and the inner thread 131 is provided on the lower retaining ring 13. The connection between the inner valve body 11 and the lower retaining ring 13 is achieved by the outer thread 14 and the inner thread 131 that cooperate with each other, which has the advantages of simple structure and easy disassembly and assembly of the pressure limiting valve assembly.

[0046] Preferably, in this embodiment, the external thread 14 is provided on the outer surface of the inner valve body 11 , and the internal thread 131 is provided on the inner surface of the lower retaining ring 13 .

[0047] like Figures 2 to 5As shown, the external thread 14 includes a plurality of first thread segments 141 arranged at intervals in the circumferential direction of the pressure limiting valve assembly, and the ends of two adjacent first thread segments 141 are arranged in an overlapping manner in the vertical direction of the pressure limiting valve assembly to form a first threaded gap 142; the internal thread 131 includes a plurality of second thread segments 1311 arranged in an interval in the circumferential direction of the pressure limiting valve assembly, the number of the second thread segments 1311 is equal to the number of the first thread segments 141, and the ends of two adjacent second thread segments 1311 are arranged in an overlapping manner in the vertical direction of the pressure limiting valve assembly to form a second threaded gap 1312. By respectively setting the external thread 14 and the internal thread 131 to a multi-segment non-full circle thread structure, the second thread segment 1311 extends into the first threaded gap 142, and the first thread segment 141 extends into the second threaded gap 1312, so that when the user disassembles and assembles the inner valve body 11 and the lower retaining ring 13, the user only needs to rotate the first thread segment 141 by a rotation angle a to complete the screwing operation without rotating at least one full circle, which is convenient for the user.

[0048] Specifically, Figure 4 and Figure 5 As shown, the rotation angle a of the first thread segment 141 is between 90° and 270°; the rotation angle of the second thread segment 1311 is between 90° and 270°. The rotation angle a of the first thread segment 141 and the rotation angle of the second thread segment 1311 are set within the above range, so that the user only needs to screw once to achieve the disassembly and assembly operation between the inner valve body 11 and the lower retaining ring 13, without the need for secondary screwing, which simplifies the user's operation. Preferably, the rotation angle a of the first thread segment 141 can be 90°, 135°, 180°, 225° or 270°; the rotation angle of the second thread segment 1311 can be 90°, 135°, 180°, 225° or 270°.

[0049] like Figures 2 to 5 As shown, the number of the first thread segments 141 is between 2 and 5; correspondingly, the number of the second thread segments 1311 is equal to the number of the first thread segments 141, and is also between 2 and 5. By reasonably setting the number and rotation angle of the first thread segments 141 and the number and rotation angle of the second thread segments 1311, the connection stability of the external thread 14 and the internal thread 131 and the convenience of operation when the user disassembles the inner valve body 11 and the lower retaining ring 13 can be ensured at the same time. Preferably, the number of the first thread segments 141 and the second thread segments 1311 can be 2, 3 or 5.

[0050] like Figure 3 and Figure 5As shown, the absolute value of the difference between the width P1 of the first threaded gap 142 and the width P2 of the second threaded gap 1312 is greater than 0 mm and less than or equal to 1 mm. The width difference between the first threaded gap 142 and the second threaded gap 1312 is set so that the user can tighten the lower retaining ring 13 onto the inner valve body 11, thereby ensuring the connection stability between the inner valve body 11 and the lower retaining ring 13. Preferably, the absolute value of the difference between the width P1 of the first threaded gap 142 and the width P2 of the second threaded gap 1312 can be 0.2 mm, 0.5 mm, 0.8 mm or 1 mm.

[0051] like Figures 9 to 11 As shown, the inner valve 10 can be sealed above the exhaust pipe 30 of the cover assembly, and the inner valve 10 also includes a rotating air guide structure 15 arranged above the inner valve body 11, and the steam discharged from the exhaust pipe 30 can be sprayed to the rotating air guide structure 15 and drive the inner valve 10 to rotate. By providing the rotating air guide structure 15, when exhausting, the steam discharged from the exhaust pipe 30 can be sprayed to the rotating air guide structure 15 and guided by the rotating air guide structure 15 to change the exhaust direction, so that the steam can drive the inner valve body 11 to rotate, which is convenient for the user to judge whether the pressure limiting valve assembly is in the exhaust state through the state of the inner valve 10, enhance the user's perception of the cooking process and improve the user's use experience.

[0052] like Figure 1 , Figure 2 , Figure 7 and Fig.11As shown, the rotating air guide structure 15 includes a top plate 151, an air guide side plate 152 connected to the top plate 151, and an exhaust port 153 arranged on the air guide side plate 152. The extension direction of the exhaust port 153 is arranged to intersect with the radial direction of the rotating air guide structure 15. The pressure limiting valve assembly also includes a blocking member 17 arranged below the top plate 151 and capable of blocking the top of the exhaust channel of the exhaust pipe 30. When the pressure limiting valve assembly is lifted up, the exhaust port 153 is directly connected to the exhaust channel of the exhaust pipe 30. It should be noted that the above-mentioned "radial direction of the rotating air guide structure 15" refers to the extension direction of the line between the exhaust port 153 and the center of the rotating air guide structure 15, and the above-mentioned "the exhaust port 153 is directly connected to the exhaust channel of the exhaust pipe 30" refers to the absence of other blocking structures between the exhaust port 153 and the exhaust channel. The extension direction of the exhaust port 153 is arranged to intersect with the radial direction of the rotating air guide structure 15, so that when exhausting, the steam is sprayed along the extension direction of the exhaust port 153 onto other structures outside the rotating air guide structure 15, and the steam applies a reverse thrust to the rotating air guide structure 15 that is opposite to the spray direction of the steam. The reverse thrust has a component force along the tangential direction of the rotating air guide structure 15, which can drive the rotating air guide structure 15 and the inner valve 10 having the rotating air guide structure 15 to rotate. In addition, when the pressure limiting valve assembly is lifted, the exhaust port 153 is directly connected to the exhaust channel of the exhaust pipe 30. This arrangement allows the steam to directly pass through the exhaust channel to reach the exhaust port 153, which is conducive to the smooth circulation of the steam, so that the steam can also flush the interior of the inner valve 10 during the process of driving the inner valve 10 to rotate, and take out the food residues that may remain in the inner valve 10. Specifically, in this embodiment, the upper retaining ring 12 is arranged at the lower end of the rotating air guide structure 15 and is located below the exhaust port 153; of course, in an embodiment not shown in the figure, the upper retaining ring can also be arranged at the upper end of the inner valve body and is located below the exhaust port. It should be noted that the two embodiments of directly arranging the upper retaining ring on the inner valve body and indirectly arranging the upper retaining ring 12 on the inner valve body 11 by arranging the upper retaining ring 12 on the rotating air guide structure 15 can be understood as "the upper retaining ring 12 is arranged on the inner valve body 11".

[0053] Specifically, the rotating air guide structure 15 includes a top plate 151, a plurality of air guide side plates 152 arranged on the periphery of the top plate 151, and an exhaust port 153, wherein each air guide side plate 152 has a first end and a second end, and the distance from the first end of the air guide side plate 152 to the center of the top plate 151 is greater than the distance from the second end of the air guide side plate 152 to the center of the top plate 151, so that the air guide side plate 152 forms a structure that gradually expands outward from the second end to the first end, so that a staggered structure is formed between the first end and the second end of two adjacent air guide side plates 152 and an exhaust port 153 is formed, and an extension direction of the exhaust port 153 is arranged to intersect with a line connecting the exhaust port 153 to the center of the top plate 151, so that the steam discharged from the exhaust port 153 is discharged to the external structure and applies a reverse thrust to the rotating air guide structure 15 to drive the inner valve 10 with the rotating air guide structure 15 to rotate, and the rotation direction is the direction from the first end to the second end of the air guide side plate 152.

[0054] Specifically, in this embodiment, the spiral direction of the external thread 14 is opposite to the rotation direction of the inner valve 10. This arrangement can prevent the lower retaining ring 13 from being separated from the inner valve body 11 during the rotation of the inner valve 10, thereby ensuring the structural stability of the pressure limiting valve assembly during use.

[0055] like Figure 1 and Fig.11 As shown, the inner valve 10 also includes a blocking member 17 arranged below the top plate 151 . The blocking member 17 includes a blocking ball 171 . When the inner valve 10 is pressed above the exhaust pipe 30 , the blocking ball 171 can block the top of the exhaust channel on the exhaust pipe 30 .

[0056] The following is a description of the disassembly process of the pressure limiting valve assembly in conjunction with the accompanying drawings: Figure 1 and Fig.11 As shown, first remove the nested inner valve 10 and outer valve 20 from the exhaust pipe 30, then the user can pinch the rotating air guide structure 15 with one hand and hold the lower retaining ring 13 with the other hand, and then rotate the lower retaining ring 13. In order to facilitate the disassembly and assembly of the pressure limiting valve assembly and avoid the user losing some parts due to too many parts, the upper retaining ring 12 is preferably fixedly connected to the inner valve body 11. Of course, in an embodiment not shown in the figure, the upper retaining ring can also be connected to the inner valve body through a threaded connection structure. At this time, the spiral direction of the thread on the upper retaining ring is opposite to the spiral direction of the thread on the lower retaining ring.

[0057] Figures 6 to 8 A schematic structural diagram of a second embodiment of a pressure-limiting valve assembly according to the present application is shown. Only the parts of the second embodiment that are different from the first embodiment are described below, and the same parts of the two embodiments are not repeated.

[0058] Specifically, in the second embodiment, the lower retaining ring 13 is detachably connected to the inner valve body 11 through the sliding groove and the sliding block that cooperate with each other. The outer surface of the inner valve body 11 is provided with a vertical groove section 161 and a transverse groove section 162 that are connected to each other, the lower end of the vertical groove section 161 passes through the lower surface of the inner valve body 11, the first end of the transverse groove section 162 is connected with the upper end of the vertical groove section 161, and the second end of the transverse groove section 162 is a closed end, and the inner surface of the lower retaining ring 13 is provided with a sliding block 132 that can move in the transverse groove section 162 and the vertical groove section 161. When assembling the lower retaining ring 13 and the inner valve body 11, first align the slider 132 with the lower end of the vertical groove section 161, then move the slider 132 along the vertical groove section 161 to the upper end of the vertical groove section 161, and then move the slider 132 along the first end to the second end of the transverse groove section 162; when removing the lower retaining ring 13 from the inner valve body 11, first rotate the lower retaining ring 13 along the direction from the second end to the first end of the transverse groove section 162, move the slider 132 to the top of the vertical groove section 161, and then move the lower retaining ring 13 downward to remove the lower retaining ring 13 from the inner valve body 11.

[0059] Among them, the first matching rib 1621 is respectively provided on the upper and lower wall surfaces of the second end of the transverse groove section 162, and the second matching rib 1321 is respectively provided on the upper and lower surfaces of the slider 132, and the first matching rib 1621 and the second matching rib 1321 are interference-fitted, and the interference amount between the first matching rib 1621 and the second matching rib 1321 is between 0.1mm and 0.2mm, so that after the lower retaining ring 13 is installed in place, the first matching rib 1621 and the second matching rib 1321 are stop-fitted to ensure the installation firmness between the lower retaining ring 13 and the inner valve body 11. Preferably, the interference amount between the first matching rib 1621 and the second matching rib 1321 can be 0.1mm, 0.15mm or 0.2mm.

[0060] The direction from the first end to the second end of the transverse groove section 162 is opposite to the rotation direction of the inner valve 10. This arrangement can prevent the lower retaining ring 13 from being separated from the inner valve body 11 during the rotation of the inner valve 10, thereby ensuring the structural stability of the pressure limiting valve assembly during use.

[0061] The present application also provides a cover assembly, and an embodiment of the cover assembly of the present application includes a cover 40, an exhaust pipe 30 passing through the cover 40, and a pressure limiting valve assembly arranged above the exhaust pipe 30, wherein the pressure limiting valve assembly is the above-mentioned pressure limiting valve assembly. The above-mentioned pressure limiting valve assembly can effectively solve the problem in the related art that food residues are easily left between the outer valve and the inner valve and it is difficult to clean, and the cover assembly with the above-mentioned pressure limiting valve assembly also has the above-mentioned advantages.

[0062] like Fig. 9 and Fig.10As shown, the cover assembly also includes a rotating operating member 50 which is sleeved on the outside of the outer valve 20 and rotatably arranged on the cover body 40. When the rotating operating member 50 rotates, it can drive the outer valve 20 to rotate synchronously with it. A step structure is provided at the lower end of the outer valve 20. The step structure has a plurality of step surfaces arranged at intervals in the up and down directions. When the outer valve 20 rotates with the rotating operating member 50, the different step surfaces on the step structure cooperate with the supporting member on the cover body 40 to make the outer valve 20 move in the up and down directions. During the use of the pressure limiting valve assembly, the step structure is also easy to hide dirt. In this embodiment, the lower retaining ring 13 is set as a detachable structure, and the outer valve 20 can be removed separately to clean the step structure.

[0063] It should be noted that when describing the embodiments of the present application, the “plurality” used refers to two or more.

[0064] like Figures 9 to 11 As shown, the present application also provides a cooking utensil, and the embodiment of the cooking utensil of the present application includes a cover assembly, wherein the cover assembly is the above-mentioned cover assembly. The above-mentioned cover assembly can effectively solve the problem in the related art that food residues are easily left between the outer valve and the inner valve and it is difficult to clean, and the cooking utensil with the above-mentioned cover assembly also has the above-mentioned advantages.

[0065] like Fig.11 As shown, an elastic retaining ring 31 is provided on the outer side of the upper end of the exhaust pipe 30. Preferably, the elastic retaining ring 31 can be an elastic structure. An inner retaining ring 18 is provided on the lower end of the inner surface of the inner valve body 11. The inner diameter of the inner retaining ring 18 is smaller than the outer diameter of the elastic retaining ring 31. When the pressure limiting valve assembly is installed above the exhaust pipe 30 or the pressure limiting valve assembly is removed from the exhaust pipe 30, the inner retaining ring 18 can be squeezed with the elastic retaining ring 31 and pass over the elastic retaining ring 31. When the pressure limiting valve assembly is installed on the exhaust pipe 30 and there is no external force, the inner retaining ring 18 is located below the elastic retaining ring 31 and can cooperate with the elastic retaining ring 31 to stop the pressure limiting valve assembly from falling off the exhaust pipe 30. In addition, the inner retaining ring 18 is arranged on the inner surface of the inner valve body 11, so that when disassembling the pressure limiting valve assembly and the exhaust pipe 30, the interference squeeze between the elastic retaining ring 31 and the inner retaining ring 18 will not affect the connection stability between the lower retaining ring 13 and the inner valve body 11, thereby preventing the lower retaining ring 13 from loosening.

[0066] Of course, in an embodiment not shown in the figure, the inner retaining ring can also be arranged on the inner side of the lower retaining ring. Specifically, when an external thread is arranged on the lower retaining ring and an internal thread is arranged on the inner valve body, the lower retaining ring has an annular convex edge extending along its axial direction and extending into the inner part of the inner valve body, the external thread is arranged on the outer surface of the annular convex edge, the internal thread is arranged on the inner surface of the inner valve body, and the inner retaining ring is arranged on the inner surface of the lower retaining ring; or, when an internal thread is arranged on the lower retaining ring and an external thread is arranged on the inner valve body, the lower retaining ring is made to protrude downward from the inner valve body and the inner retaining ring is arranged on the inner surface of the lower retaining ring.

[0067] like Fig. 9 As shown, the cooking appliance further comprises a pot body assembly 60 , and a cover body assembly is openably and closably disposed on the pot body assembly 60 .

[0068] Specifically, in this embodiment, the cooking utensil is a pressure cooking utensil with a pressure regulating function. Of course, in embodiments not shown in the figure, the cooking utensil can also be a rice cooker, a low-pressure rice cooker, a soybean milk maker, a food processor, a cooking machine, an electric stew pot, a multi-function pot and other products.

[0069] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0071] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0072] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pressure limiting valve assembly, characterized in that: include: An inner valve (10) comprises an inner valve body (11) and an upper retaining ring (12) and a lower retaining ring (13) arranged on the inner valve body (11), wherein the lower retaining ring (13) is detachably connected to the inner valve body (11); The outer valve (20) is movably mounted on the outer side of the inner valve (10) along the axial direction of the inner valve (10). The outer valve (20) is located above the lower retaining ring (13). The outer valve (20) includes an outer valve body (21) and an adjusting protrusion (22) arranged on the inner surface of the outer valve body (21). The adjusting protrusion (22) extends between the upper retaining ring (12) and the lower retaining ring (13). The height of the adjusting protrusion (22) is less than the distance between the upper retaining ring (12) and the lower retaining ring (13).

2. The pressure limiting valve assembly according to claim 1, characterized in that: A threaded connection structure is provided between the inner valve body (11) and the lower retaining ring (13), and the threaded connection structure includes an external thread (14) and an internal thread (131) that cooperate with each other, wherein one of the external thread (14) and the internal thread (131) is provided on the inner valve body (11), and the other of the external thread (14) and the internal thread (131) is provided on the lower retaining ring (13).

3. The pressure limiting valve assembly according to claim 2, characterized in that: The external thread (14) comprises a plurality of first thread segments (141) arranged at intervals in the circumferential direction of the pressure limiting valve assembly, and ends of two adjacent first thread segments (141) are arranged to overlap in the up-down direction of the pressure limiting valve assembly to form a first threaded gap (142); The internal thread (131) includes a plurality of second thread segments (1311) spaced apart in the circumferential direction of the pressure-limiting valve assembly, the number of the second thread segments (1311) being equal to the number of the first thread segments (141), and the ends of two adjacent second thread segments (1311) being stacked in the up and down direction of the pressure-limiting valve assembly to form a second threaded gap (1312).

4. The pressure limiting valve assembly according to claim 3, characterized in that: The rotation angle (a) of the first thread segment (141) is between 90° and 270°; the rotation angle of the second thread segment (1311) is between 90° and 270°; and / or, The number of the first thread segments (141) is between 2 and 5; and / or, The absolute value of the difference between the width (P1) of the first screw connection gap (142) and the width (P2) of the second screw connection gap (1312) is greater than 0 mm and less than or equal to 1 mm.

5. The pressure limiting valve assembly according to any one of claims 2 to 4, characterized in that: The inner valve (10) can be sealed above the exhaust pipe (30) of the cover assembly, and the inner valve (10) also includes a rotating air guide structure (15) arranged above the inner valve body (11), and the steam discharged from the exhaust pipe (30) can be sprayed to the rotating air guide structure (15) and drive the inner valve (10) to rotate.

6. The pressure limiting valve assembly according to claim 5, characterized in that: The rotating air guide structure (15) comprises a top plate (151), an air guide side plate (152) connected to the top plate (151), and an exhaust port (153) arranged on the air guide side plate (152); the exhaust port (153) is arranged to extend in a direction that intersects with a radial direction of the rotating air guide structure (15); the pressure limiting valve assembly further comprises a blocking member (17) disposed below the top plate (151) and capable of blocking the top of the exhaust passage of the exhaust pipe (30); when the pressure limiting valve assembly is lifted up, the exhaust port (153) is directly connected to the exhaust passage of the exhaust pipe (30).

7. The pressure limiting valve assembly according to claim 5, characterized in that: The spiral direction of the external thread (14) is opposite to the rotation direction of the internal valve (10).

8. The pressure limiting valve assembly according to claim 1, characterized in that: The outer surface of the inner valve body (11) is provided with a vertical groove section (161) and a transverse groove section (162) which are connected to each other. The lower end of the vertical groove section (161) passes through the lower surface of the inner valve body (11). The first end of the transverse groove section (162) is connected to the upper end of the vertical groove section (161). The second end of the transverse groove section (162) is a closed end. The inner surface of the lower retaining ring (13) is provided with a sliding block (132) which can move in the transverse groove section (162) and the vertical groove section (161).

9. The pressure limiting valve assembly according to claim 8, characterized in that: A first matching rib (1621) is respectively arranged on the upper and lower wall surfaces of the second end of the transverse groove section (162), and a second matching rib (1321) is respectively arranged on the upper and lower surfaces of the sliding block (132), the first matching rib (1621) and the second matching rib (1321) are interference-fitted, and the interference amount between the first matching rib (1621) and the second matching rib (1321) is between 0.1 mm and 0.2 mm; and / or, The inner valve (10) can be sealed above the exhaust pipe (30) of the cover body assembly, and the inner valve (10) also includes a rotating air guide structure (15) arranged above the inner valve body (11). The steam discharged from the exhaust pipe (30) can be sprayed to the rotating air guide structure (15) and drive the inner valve (10) to rotate, and the direction from the first end to the second end of the transverse groove section (162) is opposite to the rotation direction of the inner valve (10) when it rotates.

10. A cover assembly, comprising a cover (40), an exhaust pipe (30) passing through the cover (40), and a pressure limiting valve assembly arranged above the exhaust pipe (30), characterized in that: The pressure-limiting valve assembly is the pressure-limiting valve assembly according to any one of claims 1 to 9.

11. The cover assembly according to claim 10, characterized in that: An elastic retaining ring (31) is provided on the exhaust pipe (30), and an inner retaining ring (18) is provided at the lower end of the inner surface of the inner valve body (11), wherein the inner diameter of the inner retaining ring (18) is smaller than the outer diameter of the elastic retaining ring (31).

12. A cooking utensil, comprising a cover assembly, characterized in that: The cover assembly is the cover assembly according to claim 10 or 11.

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