Sealing structure and cooking equipment

Abstract

The utility model relates to the field of cooking equipment, in particular to a sealing structure and cooking equipment, which comprises a plurality of concave mounting holes arranged on a heating plate, annular grooves arranged at the edges of the mounting holes, and sealing rings arranged in the annular grooves; the assembly opening is formed in the inner container and used for installing the heating disc, a concave annular groove is formed along the edge of the assembly opening, an annular sealing piece is arranged in the annular groove, and the annular sealing piece abuts against the heating disc; a plurality of stepped holes are formed in the annular sealing piece, and the annular grooves are embedded in the stepped holes. Aiming at the technical problem that sealing between an existing heating disc and an inner container has defects, the utility model adopts the form that a sealing ring is assembled in an annular groove and an annular sealing piece is assembled in an annular groove, so that the positions of the sealing ring and the annular sealing piece are of a plane extrusion type sealing structure, the radial shearing force is reduced, and the sealing performance is improved. And the sealing reliability between the heating disc and the inner container is improved.

Description

Technical Field

[0001] The utility model relates to the field of cooking equipment, in particular to a sealing structure and cooking equipment. Background Art

[0002] In household cooking equipment with steaming function, such as steam ovens, the heating device is generally a heating plate, which is usually installed on the inner pot, and the heating plate and the inner pot are generally sealed by a sealing ring. However, the sealing effect of the existing heating plate is weak, and leakage is prone to occur at the junction of the heating plate and the inner pot. In addition, because the traditional sealing ring is affected by axial force and large radial force during assembly, the sealing performance of the sealing ring has reliability risks and poor life. Utility Model Content

[0003] In response to the technical problem that the existing sealing between the heating plate and the inner pot is defective, the utility model provides a sealing structure and a cooking device, which assembles a sealing ring in an annular groove and an annular seal in an annular groove, so that the positions of the sealing ring and the annular seal present a planar extrusion sealing structure, reduces the radial shear force, and improves the sealing reliability between the heating plate and the inner pot.

[0004] In order to solve the above problems, the technical solution provided by the utility model is:

[0005] A sealing structure for sealing between a heating plate and an inner tank, comprising a plurality of mounting holes arranged on the heating plate, an annular groove being arranged at the edge of the mounting holes, a sealing ring being arranged in the annular groove; further comprising an assembly port arranged on the inner tank, the assembly port being used to mount the heating plate, a recessed annular groove being arranged along the edge of the assembly port, an annular seal being arranged in the annular groove, the annular seal abutting against the heating plate; the sealing ring and the annular seal are elastic; a plurality of step holes are arranged on the annular seal, a portion of the heating plate provided with the annular groove is at least partially embedded in the step hole, a plurality of fixing holes are arranged at the bottom of the annular groove, the sealing structure further comprising a threaded connector, the threaded connector passes through the mounting hole, the fixing hole and the step hole, and is used to fix the heating plate, the annular seal and the inner tank, the end of the threaded connector abuts against the opening side end face of the annular groove and tightly abuts against the sealing ring.

[0006] Optionally, on the surface of the annular seal facing the fixing hole, a plurality of sealing and waterproof reinforcement ribs are arranged from the center to the outside, and a hydrophobic groove is formed between the sealing and waterproof reinforcement ribs; a plurality of hydrophobic holes are arranged at the bottom of the annular groove, and the hydrophobic groove is connected with the hydrophobic holes.

[0007] Optionally, a plurality of reinforcing ribs are provided on the annular seal, and at least part of the reinforcing ribs are located between the step holes.

[0008] Optionally, a plurality of reinforcing sealing ribs are circumferentially arranged on the outer wall of the annular seal, ends of the reinforcing sealing ribs extend beyond the outer wall of the annular seal, and the reinforcing sealing ribs are elastic, and the annular seal is provided with spacing grooves between the reinforcing sealing ribs.

[0009] Optionally, a bending groove is provided at the edge of the annular seal, and the bending groove is used for nesting with the edge of the heating plate.

[0010] Optionally, the heating plate is provided with a portion of the annular groove, wherein the groove wall on the side away from the center of the annular groove is a first side wall, and the groove wall on the side close to the center is a first flange, and the sealing ring is located between the first side wall and the first flange; the cross-sectional diameter of the sealing ring is 1-1.5 times the height h2 of the first flange, and the cross-sectional diameter of the sealing ring is 0.5-0.8 times the width L of the annular groove, so that there is a gap between the outer wall of the sealing ring and the annular groove, the inner diameter of the sealing ring is 0.9-1 times the first flange spacing D2, and the cross-sectional diameter of the sealing ring is greater than the first flange height h2 to form a height difference Δh, and Δh is 0.3-1.0mm.

[0011] Optionally, there is an inclination angle a1 between the first side wall and the vertical direction, and a1≤15°.

[0012] Optionally, the inner liner is provided with the annular portion including a portion away from the groove, wherein the groove wall on the side away from the center of the annular groove is a second side wall, the second side wall is inclined relative to the vertical direction, the groove wall on the side close to the center is a second flange, the second flange is inclined relative to the horizontal direction, the bottom wall connecting the second side wall and the second flange is an annular plane, and the fixing hole is located on the annular plane.

[0013] Optionally, there is an inclination angle a2 between the second side wall and the vertical direction, a2≤10°; there is an inclination angle b between the second flange and the horizontal direction, 90°≤b≤135°.

[0014] A cooking device comprises the above-mentioned sealing structure.

[0015] Beneficial Effects

[0016] The technical solution provided by the utility model has the following beneficial effects compared with the prior art: in order to solve the technical problem that the existing sealing between the heating plate and the inner tank is defective, the utility model assembles the sealing ring in the annular groove and the annular seal in the annular groove, so that the positions of the sealing ring and the annular seal present a planar extrusion sealing structure, which reduces the radial shear force and improves the sealing reliability between the heating plate and the inner tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of assembling the sealing structure proposed in an embodiment of the utility model on a cooking device.

[0018] Figure 2 for Figure 1 Explosion diagram.

[0019] Figure 3 This is a schematic diagram of the structure of the heating plate proposed in the embodiment of the utility model.

[0020] Figure 4 This is a schematic structural diagram of the annular seal proposed in an embodiment of the utility model.

[0021] Figure 5 A partial cross-sectional schematic diagram of the annular seal proposed in an embodiment of the utility model.

[0022] Figure 6 This is one of the partial cross-sectional schematic diagrams of the sealing structure proposed in the embodiment of the utility model.

[0023] Figure 7 This is a second partial cross-sectional schematic diagram of the sealing structure proposed in the embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0026] Example 1

[0027] Combined with Figure 1-7The present embodiment proposes a sealing structure for sealing between the heating plate 10 and the inner tank 20, including a plurality of recessed mounting holes 101 arranged on the heating plate 10, an annular groove 11 arranged at the edge of the mounting hole 101, and a sealing ring 102 arranged in the annular groove 11; and also includes an assembly port 201 arranged on the inner tank 20, the assembly port 201 is used to install the heating plate 10, a recessed annular groove 21 is arranged along the edge of the assembly port 201, an annular sealing member 22 is arranged in the annular groove 21, and the annular sealing member 22 abuts against the heating plate 10; the sealing ring 102 and the annular The seal 22 is elastic, and a plurality of step holes 221 are provided on the annular seal 22. A portion of the annular groove 11 is provided on the heating plate 10, and at least a portion of the portion is embedded in the step hole 221. A plurality of fixing holes 211 are provided at the bottom of the annular groove 21. The sealing structure also includes a threaded connector 30. The threaded connector 30 passes through the mounting hole 101, the fixing hole 211 and the step hole 221, and is used to fix the heating plate 10, the annular seal 22 and the inner tank 20. The end of the threaded connector 30 abuts against the open side end face of the annular groove 11 and tightly abuts against the sealing ring 102.

[0028] A sealing structure of the present embodiment is used for sealing between the heating plate 10 and the inner tank 20, the annular groove 11 is concentrically arranged with the mounting hole 101, and the annular groove 21 is concentrically arranged with the annular seal 22. By assembling the sealing ring 102 in the annular groove 11 and assembling the annular seal 22 in the annular groove 21, the positions of the sealing ring 102 and the annular seal 22 present a planar extrusion sealing structure, which reduces the radial shear force and improves the sealing reliability between the heating plate 10 and the inner tank 20.

[0029] A sealing structure of the present embodiment is applied to the situation where the heating plate 10 and the inner tank 20 are fixed by means of a threaded connector 30 such as screws or bolts. The threaded connector 30 passes through the sealing ring 102, the mounting hole 101, the step hole 221 and the fixing hole 211, so that the heating plate 10, the sealing ring 102, the annular seal 22 and the inner tank 20 are tightly connected, that is, there is a certain extrusion force along the extension direction of the threaded connector 30.

[0030] The sealing ring 102 in this embodiment is preferably an O-ring. Since the sealing ring 102 is disposed in the annular groove 11 structure, when subjected to extrusion force during assembly, the sealing ring 102 is deformed but subjected to the limiting force of the annular groove 11, thereby reducing the radial shear force of the sealing ring 102 and improving the service life of the sealing ring 102. In addition, the annular seal 22 in this embodiment is disposed in the annular groove 21. When subjected to extrusion force, the radial shear force is reduced, and the service life of the annular seal 22 can also be guaranteed.

[0031] In this embodiment, the step hole 221 on the annular seal 22 can be nested with the annular groove 11 structure at the mounting hole 101 to achieve the positioning and fixing effect between the annular seal 22 and the heating plate 10. At the same time, since the annular groove 11 can directly transmit the extrusion force of the threaded connector 30 to the step hole 221, more deformation can occur at the step hole 221, thereby improving the sealing performance between the annular seal 22 and the heating plate 10.

[0032] In this embodiment, when a threaded connector 30 such as a flat head screw or bolt is used, a backing groove can be provided at the root of the threaded connector 30, which is beneficial to ensure the tight contact between the threaded connector 30 and the annular groove 11, thereby forming a better sealing effect.

[0033] Example 2

[0034] Combined with Figure 5 and 7 Compared with the technical solution of Example 1, a sealing structure of this embodiment can be improved as follows: on the surface of the annular sealing member 22 facing the fixing hole 211, a plurality of sealing and waterproof reinforcing ribs 222 are arranged from the center of the circle to the outside, and a hydrophobic groove is formed between the sealing and waterproof reinforcing ribs 222; a plurality of hydrophobic holes 212 are arranged at the bottom of the annular groove 21, and the hydrophobic groove is connected with the hydrophobic hole 212.

[0035] In this embodiment, the sealing waterproof reinforcement ribs 222 are provided to achieve a multi-level sealing effect in the horizontal direction. In addition, the sealing waterproof reinforcement ribs 222 can be provided with multiple circles. For example, three circles of sealing waterproof reinforcement ribs 222 are provided, and two drainage grooves can be formed between the sealing waterproof reinforcement ribs 222. When a circle of sealing waterproof reinforcement ribs 222 leaks, if the other two circles of sealing waterproof reinforcement ribs 222 are intact, the leaked water will be guided to the drainage holes 212 at the bottom of the annular groove 21 through the drainage groove, so that the leaked water is discharged in a controlled manner, thereby protecting the components from being affected.

[0036] In summary, the plurality of sealing and waterproof reinforcement ribs 222 constitute a multi-level waterproof structure to enhance the sealing performance, and can also naturally form a drainage groove to discharge the leaked water in a controllable manner in the event of accidental leakage.

[0037] It is conceivable that the hydrophobic holes 212 at the bottom of the annular groove 21 have any shape, and can be round holes, rectangular holes, fan-shaped holes, etc., and can be distributed and arranged in a certain pattern to correspond to different hydrophobic grooves.

[0038] Example 3

[0039] Combined with Figure 4Compared with the technical solutions of Embodiment 1 or 2, a sealing structure of this embodiment can be improved as follows: a plurality of reinforcing ribs 223 are provided on the annular sealing member 22, and at least part of the reinforcing ribs 223 are located between the step holes 221.

[0040] Since the annular seal 22 is provided with a plurality of step holes 221 and in the case of the hydrophobic holes 212 in the aforementioned embodiment, the overall strength will be insufficient. Therefore, in order to improve the overall strength, the annular seal 22 is provided with a plurality of reinforcing ribs 223 in this embodiment. The reinforcing ribs 223 are preferably made of elastic material. In an optional embodiment, the reinforcing ribs 223 are evenly distributed, and some of the reinforcing ribs 223 can be arranged around the edge of the mounting hole 101 to further strengthen the structural strength at the mounting hole 101.

[0041] Example 4

[0042] Combined with Figure 5 and 7 A sealing structure of this embodiment, compared with any one of the technical solutions in Examples 1-3, can be improved as follows: a plurality of reinforcing sealing ribs 224 are circumferentially arranged on the outer wall of the annular seal 22, the ends of the reinforcing sealing ribs 224 extend beyond the outer wall of the annular seal 22, and the reinforcing sealing ribs 224 are elastic, and the annular seal 22 is provided with spacing grooves between the reinforcing sealing ribs 224.

[0043] In this embodiment, the provision of a plurality of reinforcing sealing ribs 224 enables each reinforcing sealing rib 224 to be squeezed and swung upward when the annular seal 22 is placed in the annular groove 21, thereby forming a multi-layer arc-shaped groove sealing cavity structure, thereby improving the sealing reliability.

[0044] Example 5

[0045] Combined with Figure 5 and 7 Compared with any one of the technical solutions in Examples 1-4, a sealing structure of this embodiment can be improved as follows: a bending groove 225 is provided at the edge of the annular seal 22, and the bending groove 225 is used to nest with the edge of the heating plate 10.

[0046] In this embodiment, the bending groove 225 can be an L-shaped groove structure, which is used to wrap the bending structure of the edge of the heating plate 10, thereby achieving a double sealing effect on the upper and lower surfaces of the heating plate 10, thereby improving the reliability of water seepage and water leakage prevention. At the same time, it can also prevent the edge of the heating plate 10 from directly contacting the surface of the inner tank 20, especially the surface of the annular groove 21, thereby playing a protective role.

[0047] Example 6

[0048] Combined with Figure 6 and7 , a sealing structure of the present embodiment, compared with any one of the technical solutions of embodiments 1-5, can be improved as follows: the heating plate (10) is provided with a portion of the annular groove (11), the groove wall on the side away from the center of the annular groove (11) is a first side wall 111, and the groove wall on the side close to the center is a first flange 112, and the sealing ring 102 is located between the first side wall 111 and the first flange 112; the cross-sectional diameter of the sealing ring 102 is 1-1.5 times the height h2 of the first flange 112, and the cross-sectional diameter of the sealing ring 102 is 0.5-0.8 times the width L of the annular groove 11, so that there is a gap between the outer wall of the sealing ring 102 and the annular groove 11, the inner diameter of the sealing ring 102 is 0.9-1 times the spacing D2 of the first flange 112, and the cross-sectional diameter of the sealing ring 102 is greater than the height h2 of the first flange 112 to form a height difference Δh, and Δh is 0.3-1.0mm.

[0049] Based on the structure of the annular groove 11 involved in this embodiment, and the design of the associated dimensions of the annular groove 11 and the sealing ring 102, the purpose is to effectively ensure the assembly and sealing of the sealing ring 102 and the annular groove 11. In the design of this embodiment, there is a gap between the sealing ring 102 and the annular groove 11, and in the height direction, the cross-sectional vertex of the sealing ring 102 is higher than the upper end surface of the first flange 112, thereby forming a height difference Δh, thereby constituting the compression amount of the sealing ring 102, and the design of this embodiment can further ensure the sealing effect at the sealing ring 102.

[0050] In this embodiment, based on the inclined setting of the first side wall 111, the first side wall 111 can guide and constrain the deformation of the sealing ring 102, so that the deformation area of ​​the sealing ring 102 is oriented toward the position where the threaded connector 30 abuts against the annular groove 11, thereby improving the sealing effect. In a preferred embodiment, there is an inclination angle a1≤15° between the first side wall 111 and the vertical direction.

[0051] Example 7

[0052] Combined with Figure 6 and 7 , a sealing structure of the present embodiment, compared with any one of the technical solutions in embodiments 1-6, can be improved as follows: the inner liner 20 is provided with a portion of the annular groove 21, and the groove wall on the side away from the center of the annular groove 21 is a second side wall 213, and the second side wall 213 is inclined relative to the vertical direction, and the groove wall on the side close to the center is a second flange 214, and the second flange 214 is inclined relative to the horizontal direction, and the bottom wall connecting the second side wall 213 and the second flange 214 is an annular plane 215, and the fixing hole 211 is located on the annular plane 215.

[0053] This embodiment relates to the structural design of the annular groove 21, the purpose of which is to ensure the assembly and sealing of the annular groove 21 and the annular seal 22. In the design of this embodiment, the annular plane 215 mainly plays a bearing role, and the second side wall 213 and the second flange 214 are used to guide and constrain the inner diameter side wall and the outer diameter side wall of the annular seal 22 to constrain the direction of the deformation area of ​​the annular seal 22.

[0054] In this embodiment, the second side wall 213 is inclined relative to the vertical direction, mainly for guiding the deformation of the annular seal 22 at the step hole 221 between the second side wall 213 and the threaded connector 30, so that the deformation therein can fill the gap between the threaded connector 30, the step hole 221 and the annular groove 11. In a more preferred embodiment, the inclination angle a2 between the second side wall 213 and the vertical direction is ≤10°, thereby ensuring the sealing of this position.

[0055] Similarly, the second flange 214 is inclined relative to the horizontal direction, mainly for guiding the deformation of the annular seal 22 at the corresponding step hole 221 between the second flange 214 and the threaded connector 30, so that the deformation there can fill the gap between the threaded connector 30, the step hole 221 and the annular groove 11. In a more preferred embodiment, the oblique angle b between the second flange 214 and the horizontal direction is 90°≤b≤135°.

[0056] Example 8

[0057] Combined with Figure 1-7 This embodiment proposes a cooking device, including a sealing structure described in any one of the technical solutions of embodiments 1-7.

[0058] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A sealing structure for sealing between a heating plate (10) and an inner tank (20), characterized in that: It comprises a plurality of mounting holes (101) arranged on a heating plate (10), an annular groove (11) being arranged at the edge of the mounting hole (101), and a sealing ring (102) being arranged in the annular groove (11); It also comprises an assembly opening (201) arranged on the inner tank (20), the assembly opening (201) being used for mounting the heating plate (10), a recessed annular groove (21) being arranged along the edge of the assembly opening (201), an annular sealing member (22) being arranged in the annular groove (21), the annular sealing member (22) being in contact with the heating plate (10); the sealing ring (102) and the annular sealing member (22) are elastic; The annular seal (22) is provided with a plurality of stepped holes (221); the heating plate (10) is provided with a portion of the annular groove (11), at least a portion of which is embedded in the stepped hole (221); the bottom of the annular groove (21) is provided with a plurality of fixing holes (211); the sealing structure further comprises a threaded connector (30); the threaded connector (30) passes through the mounting hole (101), the fixing hole (211) and the stepped hole (221), and is used to fix the heating plate (10), the annular seal (22) and the inner tank (20); the end of the threaded connector (30) abuts against the open side end surface of the annular groove (11) and tightly abuts against the sealing ring (102).

2. A sealing structure according to claim 1, characterized in that: On the surface of the annular sealing member (22) facing the fixing hole (211), a plurality of sealing and waterproof reinforcement ribs (222) are respectively arranged from the center of the circle outward, and a hydrophobic groove is formed between the sealing and waterproof reinforcement ribs (222); a plurality of hydrophobic holes (212) are arranged at the bottom of the annular groove (21), and the hydrophobic groove is connected to the hydrophobic holes (212).

3. A sealing structure according to claim 1, characterized in that: The annular seal (22) is provided with a plurality of reinforcing ribs (223), and at least part of the reinforcing ribs (223) are located between the step holes (221).

4. A sealing structure according to claim 1, characterized in that: A plurality of reinforcing sealing ribs (224) are arranged on the outer wall of the annular seal (22) along the circumferential direction, the ends of the reinforcing sealing ribs (224) extend beyond the outer wall of the annular seal (22), and the reinforcing sealing ribs (224) are elastic. The annular seal (22) is provided with spacing grooves between the reinforcing sealing ribs (224).

5. A sealing structure according to claim 1, characterized in that: A bending groove (225) is provided at the edge of the annular sealing member (22), and the bending groove (225) is used to be nested with the edge of the heating plate (10).

6. A sealing structure according to claim 1, characterized in that: The heating plate (10) is provided with a portion of the annular groove (11), wherein a groove wall on a side away from the center of the annular groove (11) is a first side wall (111), and a groove wall on a side close to the center is a first flange (112); the sealing ring (102) is located between the first side wall (111) and the first flange (112); the cross-sectional diameter of the sealing ring (102) is 1-1.5 times the height h2 of the first flange (112), and the cross-sectional diameter of the sealing ring (102) is 0.5-0.8 times the width L of the annular groove (11), so that there is a gap between the outer wall of the sealing ring (102) and the annular groove (11); the inner diameter of the sealing ring (102) is 0.9-1 times the spacing D2 of the first flange (112); the cross-sectional diameter of the sealing ring (102) is greater than the height h2 of the first flange (112) to form a height difference Δh, and Δh is 0.3-1.0 mm.

7. A sealing structure according to claim 6, characterized in that: There is an inclination angle a1 between the first side wall (111) and the vertical direction, and a1≤15°.

8. A sealing structure according to claim 1, characterized in that: The inner container (20) is provided with a portion of the annular groove (21), wherein a groove wall on a side away from the center of the annular groove (21) is a second side wall (213), the second side wall (213) is inclined relative to the vertical direction, and a groove wall on a side close to the center is a second flange (214), the second flange (214) is inclined relative to the horizontal direction, and a bottom wall connecting the second side wall (213) and the second flange (214) is an annular plane (215), and the fixing hole (211) is located on the annular plane (215).

9. A sealing structure according to claim 8, characterized in that: There is an inclination angle a2 between the second side wall (213) and the vertical direction, a2≤10°; there is an inclination angle b between the second flange (214) and the horizontal direction, 90°≤b≤135°.

10. A cooking device, characterized in that: A sealing structure comprising any one of claims 1-9.

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