Sealing ring and cooking equipment

Abstract

The utility model provides a sealing ring and cooking equipment, and relates to the technical field of kitchen appliances. The sealing ring comprises a sealing ring body and an annular sealing lip edge, the sealing lip is arranged on one side of the sealing ring body and extends in the circumferential direction of the sealing ring body. An included angle is formed between the sealing lip edge and the sealing ring body, the side, away from the sealing ring body, of the sealing lip edge is used for abutting against an external object, and the side, close to the sealing ring body, of the sealing lip edge is provided with a protruding rib extending in the circumferential direction of the sealing lip edge. According to the sealing ring, the thin-wall uniform structure of the sealing lip can be damaged by arranging the convex ribs on the sealing lip, so that high-speed oscillation of the sealing lip can be prevented when gas overflows from the space between the sealing lip and an external object at a high speed, resonance of the sealing lip is prevented, and airflow squeal is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, and particularly relates to a sealing ring and a cooking device. Background Art

[0002] In order to prevent steam leakage in cooking devices such as steam ovens during operation, a sealing ring is required to seal between the inner glass of the door body and the cooking cavity of the cooking device. The sealing ring is usually made of relatively soft materials such as silica gel. The sealing ring is usually fixed at the door opening of the cooking cavity, and a lip structure with a relatively thin and uniform wall thickness needs to be provided on the side that can contact the inner glass of the door body, so as to facilitate effective sealing by compressing the sealing ring with a relatively small force when the door body is closed.

[0003] At present, the sealing effect of the sealing ring during the operation of the cooking device is reliable. However, after the cooking device uses the high-temperature function (such as the baking function) for a period of time, the material of the sealing ring becomes softer under high-temperature conditions. If the user operates the door of the cooking device at this time, that is, opens and closes the door briefly, when closing the door, the high-temperature gas in the cooking cavity will be compressed. After the gas is compressed, it will escape from the exhaust holes of the cooking cavity and the weak sealing areas of the sealing ring. When the high-speed escaping gas passes through the thin-wall lip where the sealing ring contacts the door body, it will cause a gap in the interference area between the lip and the inner glass of the door body. When the air flow quickly passes through the gap, it will cause resonance of the uniform structure of the thin-wall lip, thereby generating a sharp whistling sound, which makes the user feel uncomfortable. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sealing ring and a cooking device to alleviate the technical problem that when the door of the cooking device using the high-temperature function is opened and closed, the high-speed escaping gas in the cooking cavity will cause vibration of the uniform structure of the thin-wall lip contacting the door body, thereby generating a sharp whistling sound in the prior art.

[0005] In a first aspect, the utility model provides a sealing ring, including a sealing ring body and an annular sealing lip;

[0006] The sealing lip is arranged on one side of the sealing ring body, and the sealing lip extends circumferentially along the sealing ring body;

[0007] An included angle is formed between the sealing lip and the sealing ring body. The side of the sealing lip away from the sealing ring body is used to abut against an external object, and a rib extending circumferentially along it is provided on the side of the sealing lip close to the sealing ring body.

[0008] In an alternative embodiment, the sealing lip edge includes an annular connecting portion and an annular interference portion. The connecting portion is fixedly connected to the sealing ring body. The interference portion is located on a side of the connecting portion away from the sealing ring body, and the interference portion is used for interference fit between the connecting portion and an external object.

[0009] In an alternative embodiment, the rib is provided at the junction of the connecting portion and the interference portion.

[0010] In an alternative embodiment, a side of the sealing lip edge connected to the sealing ring body is a connecting side, and a side of the sealing lip edge away from the sealing ring body is a suspended side;

[0011] Along a direction of abutment between the sealing lip edge and the external object, a vertical distance between the connecting side and the suspended side is a depth of the sealing lip edge; a linear distance between the connecting side and the suspended side of the sealing lip edge is a width of the sealing lip edge;

[0012] The width of the sealing lip edge is greater than the depth of the sealing lip edge.

[0013] In an alternative embodiment, a linear distance between the suspended side of the sealing lip edge and the rib is less than 3 millimeters.

[0014] In an alternative embodiment, a region between a side of the sealing lip edge away from the sealing ring body and the rib is an abutment region, and a thickness of the sealing lip edge at the abutment region is less than a thickness of the rib.

[0015] In an alternative embodiment, the thickness of the sealing lip edge at the abutment region is less than 1.2 millimeters.

[0016] In an alternative embodiment, the sealing lip edge includes a semi-annular first lip edge and a semi-annular second lip edge. The first lip edge and the second lip edge are butted to form the sealing lip edge, and the first lip edge is located above the second lip edge when the sealing lip edge abuts against the external object;

[0017] At least the first lip edge is provided with the rib.

[0018] In an alternative embodiment, the rib extends in a wavy shape along a circumferential direction of the sealing lip edge.

[0019] In a second aspect, the present utility model provides a cooking device, including a cooking container, a door body, and the sealing ring according to any one of the foregoing embodiments;

[0020] The cooking container is provided with a door opening. The door body is hinged at the door opening, and the door body can close or open the door opening;

[0021] The sealing ring body is fixed to the periphery of the door opening, and the sealing lip is used to abut between the sealing ring body and the door body when the door closes the door opening.

[0022] The sealing ring provided by the present utility model includes a sealing ring body and an annular sealing lip; the sealing lip is arranged on one side of the sealing ring body and extends circumferentially along the sealing ring body; an included angle is formed between the sealing lip and the sealing ring body, and the side of the sealing lip away from the sealing ring body is used to abut against an external object, and a rib extending along its circumference is arranged on the side of the sealing lip close to the sealing ring body. The sealing ring provided by the present utility model is used to seal the gap at the door opening of cooking equipment such as a steam oven and a microwave oven. Specifically, the sealing ring body is fixed to the periphery of the door opening of the cooking equipment, and the sealing lip faces the door body of the cooking equipment. At this time, the door body of the cooking equipment is the external object. When the door body is closed, the door body will squeeze the sealing lip. Since an included angle is formed between the sealing lip and the sealing ring body, when the sealing lip is squeezed by the door body, the side of the sealing lip away from the sealing ring body will contact and fit with the inner wall of the door body, and the side close to the sealing ring body will contact and fit with the sealing ring body, and at the same time, the squeezing force will be transmitted to the sealing ring body, so that the sealing ring body is compressed to achieve effective sealing at the door opening. It should be noted that in order to prevent the sealing lip from affecting the closing of the door body, the sealing lip is usually a thin-wall structure. After the cooking equipment uses the high-temperature function (such as the baking function) for a period of time, the sealing ring becomes softer. If the user performs an operation of opening and then closing the door of the cooking equipment for a short time at this time, the high-temperature gas in the cooking cavity of the cooking equipment will be compressed due to closing the door, and then will escape from between the sealing lip and the door body. Since in the sealing ring provided by the present utility model, a rib extending along its circumference is arranged on the side of the sealing lip close to the sealing ring body, and the rib can destroy the uniform structural form of the sealing lip, when the high-speed escaping gas overflows from between the sealing lip and the door body at a high speed, it is not easy to drive the thin-wall sealing lip to vibrate at a high speed, and it is difficult to cause resonance of the sealing lip, so that the generation of airflow whistling at the sealing lip can be effectively prevented, and the user experience can be improved.

[0023] Compared with the prior art, the sealing ring provided by the present utility model can destroy the thin-wall uniform structure of the sealing lip by arranging ribs on the sealing lip, so that when the gas overflows from between the sealing lip and the external object at a high speed, the sealing lip can be prevented from vibrating at a high speed, the resonance of the sealing lip can be prevented, and the airflow whistling can be avoided.

[0024] The cooking device provided by the present utility model includes a cooking container, a door body, and the above-mentioned sealing ring; the cooking container is provided with a door opening, the door body is hinged at the door opening, and the door body can close or open the door opening; the sealing ring body is fixed to the periphery of the door opening, and the sealing lip is used to abut between the sealing ring body and the door body when the door body closes the door opening. The cooking device provided by the present utility model includes the above-mentioned sealing ring, so the cooking device has the same beneficial effects as the above-mentioned sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a partial cross-sectional view of the sealing ring and the cooking device provided by the embodiment of the present utility model;

[0027] Figure 2 For Figure 1 the enlarged schematic view of part A in

[0028] Figure 3 It is a partial cross-sectional view of the sealing ring provided by the embodiment of the present utility model;

[0029] Figure 4 It is another partial cross-sectional view of the sealing ring and the cooking device provided by the embodiment of the present utility model;

[0030] Figure 5 It is a partial side view of the sealing ring provided by the embodiment of the present utility model.

[0031] Reference numerals: 1 - sealing ring body; 10 - outer edge; 11 - inner edge; 12 - barb protrusion; 2 - sealing lip; 20 - rib; 21 - connecting portion; 22 - interference portion; 3 - cooking cavity; 30 - door frame; 31 - door body; 32 - annular groove; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0033] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

[0034] The following will describe in detail some embodiments of the present invention in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0035] Embodiment:

[0036] As Figure 1 、 Figure 2 and Figure 3 shown, the sealing ring provided in this embodiment includes a sealing ring body 1 and an annular sealing lip 2; the sealing lip 2 is provided on one side of the sealing ring body 1, and the sealing lip 2 extends along the circumferential direction of the sealing ring body 1; an included angle is formed between the sealing lip 2 and the sealing ring body 1, the side of the sealing lip 2 away from the sealing ring body 1 is used to abut against an external object, and a rib 20 extending along its circumferential direction is provided on the side of the sealing lip 2 close to the sealing ring body 1.

[0037] The sealing ring is usually made of sealing materials such as silica gel. The sealing ring provided in this embodiment is used to seal the gap at the door of cooking equipment such as a steam oven. Specifically, as Figure 1 shown, the cooking equipment has a cooking cavity 3, a door is provided on one side of the cooking cavity 3, a door body 31 is hinged at the door, and a glass for observing the cooking cavity 3 is also embedded on the door body 31; the sealing ring body 1 is fixed on the door frame 30 around the door of the cooking equipment, and the sealing ring body 1 extends along the circumferential direction of the door; the sealing lip 2 faces the inner wall of the glass of the door body 31, and at this time the door body 31 of the cooking equipment is the external object.

[0038] When the door body 31 is closed, the door body 31 will squeeze the sealing lip 2. Since an included angle is formed between the sealing lip 2 and the sealing ring body 1, when the sealing lip 2 is squeezed by the door body 31, the side of the sealing lip 2 away from the sealing ring body 1 will contact and fit with the inner wall of the door body 31, and the side close to the sealing ring body 1 will contact and fit with the sealing ring body 1, and at the same time transmit the squeezing force to the sealing ring body 1, so that the sealing ring body 1 is compressed to achieve effective sealing at the door.

[0039] It should be noted that in order to prevent the sealing lip 2 from affecting the closing of the door body 31, the sealing lip 2 is usually a thin-wall structure.

[0040] After the cooking device has used the high-temperature function (such as the baking function) for a period of time, the sealing ring becomes softer. If the user then operates the cooking device to open and close the door briefly, the high-temperature gas in the cooking cavity 3 of the cooking device will be compressed when the door is closed, and then will escape from between the sealing lip 2 and the door body 31.

[0041] In the sealing ring provided in this embodiment, a rib 20 extending along its circumference is provided on the side of the sealing lip 2 close to the sealing ring body 1. The rib 20 can destroy the uniform structural form of the sealing lip 2. Therefore, when the high-speed escaping gas overflows from between the sealing lip 2 and the door body 31 at high speed, it is not easy to drive the thin-walled sealing lip 2 to vibrate at high speed, and it is difficult to cause resonance of the sealing lip 2. Furthermore, it can effectively prevent the generation of airflow whistling at the sealing lip 2 and improve the user experience.

[0042] It should be noted that since the rib 20 is provided on the side of the sealing lip 2 close to the sealing ring body 1, the rib 20 faces away from external objects and will not contact external objects such as the door body 31. Therefore, it will not affect the sealing effect of the sealing lip 2.

[0043] Compared with the prior art, the sealing ring provided in this embodiment can destroy the thin-walled uniform structure of the sealing lip 2 by providing the rib 20 on the sealing lip 2, so that when the gas overflows from between the sealing lip 2 and the external object at high speed, it can prevent the sealing lip 2 from vibrating at high speed, prevent resonance of the sealing lip 2, and avoid the occurrence of airflow whistling.

[0044] The sealing ring body 1 is usually annular. To improve the installation stability of the sealing ring body 1 on the cooking device, as Figure 1 and Figure 2 shown, a circular groove 32 extending along the circumference of the door opening can be provided on the door frame 30 on the circumferential side of the door opening of the cooking device. The sealing ring body 1 is clamped in the circular groove 32, and the sealing lip 2 on one side of the sealing ring body 1 is exposed outside the circular groove 32.

[0045] Furthermore, as Figure 2 and Figure 3 shown, an outer edge 10 and an inner edge 11 can also be provided at the position of the sealing ring body 1 corresponding to the notch of the circular groove 32. The outer edge 10 and the inner edge 11 are respectively provided at the two opposite side edges of the sealing ring body 1, and both the outer edge 10 and the inner edge 11 extend towards the bottom of the circular groove 32; the outer edge 10 and the inner edge 11 are respectively used to fit on the side walls of the door frame 30 on both sides of the circular groove 32 to further improve the clamping stability of the sealing ring body 1 in the circular groove 32.

[0046] In addition, as Figure 3As shown, an undercut protrusion 12 may also be provided on the sidewall of the sealing ring body 1 that contacts the annular groove 32. The undercut protrusion 12 is used to achieve an interference fit between the sealing ring body 1 and the annular groove 32, thereby further improving the clamping stability of the sealing ring body 1 in the annular groove 32.

[0047] As Figure 2 shown, the sealing lip 2 includes an annular connecting portion 21 and an annular interference portion 22. The connecting portion 21 is fixedly connected to the sealing ring body 1. The interference portion 22 is located on the side of the connecting portion 21 away from the sealing ring body 1. The interference portion 22 is used for interference fitting between the connecting portion 21 and an external object.

[0048] The connecting portion 21 is used to connect with the sealing ring body 1. When the door body 31 of the cooking device is closed, the interference portion 22 is pressed by the door body 31 and interference fits between the connecting portion 21 and the door body 31, so that the sealing lip 2 interference fits between the sealing ring body 1 and the inner glass of the door body 31, effectively improving the sealing effect of the sealing ring.

[0049] As Figure 2 shown, the rib 20 is provided at the junction of the connecting portion 21 and the interference portion 22.

[0050] When the rib 20 is provided at the junction of the connecting portion 21 and the interference portion 22, it can prevent the rib 20 from affecting the sealing effect of the sealing lip 2 while maximizing the anti-resonance effect of the rib 20 on the sealing lip 2.

[0051] In this embodiment, the side of the sealing lip 2 connected to the sealing ring body 1 is the connecting side, and the side of the sealing lip 2 away from the sealing ring body 1 is the suspended side; along the abutting direction between the sealing lip 2 and the external object, the vertical distance between the connecting side and the suspended side is the depth of the sealing lip 2; the straight-line distance between the connecting side and the suspended side of the sealing lip 2 is the width of the sealing lip 2; the width of the sealing lip 2 is greater than the depth of the sealing lip 2.

[0052] As Figure 4 shown, the depth of the sealing lip 2 is denoted as H1, and the width of the sealing lip 2 is denoted as L1, then L1 > H1.

[0053] When L1 > H1, it can make the angle between the sealing lip 2 and the sealing ring body 1 within a suitable range, thereby maximizing the use effect of the sealing lip 2.

[0054] As Figure 4 shown, the straight-line distance between the suspended side of the sealing lip 2 and the rib 20 is denoted as L2. In this embodiment, it is preferably that L2 is less than 3 mm.

[0055] Among them, the sealing lip 2 within the corresponding area of L2 is the aforementioned interference part 22. The interference part 22 of the sealing lip 2 is a thin-wall structure with a uniform wall thickness, and the interference part 22 is used to play a compression sealing role when the door body 31 is closed.

[0056] When L2 is less than 3 millimeters, it can effectively prevent the size of the interference part 22 from being too large and affecting the closing process of the door body 31.

[0057] In this embodiment, the area between the side of the sealing lip 2 away from the sealing ring body 1 to the rib 20 is the abutting area. The thickness of the sealing lip 2 at the abutting area is less than the thickness of the rib 20.

[0058] The abutting area is the aforementioned interference part 22. When the thickness of the sealing lip 2 at the abutting area of the sealing lip 2 is less than the thickness of the rib 20, it can effectively prevent the rib 20 from being too thin and affecting its supporting effect on the sealing lip 2.

[0059] Furthermore, as Figure 5 shown, the thickness of the sealing lip 2 at the abutting area is denoted as D1, and the sum of the thicknesses of the rib 20 and the sealing lip 2 is denoted as D2. Then, in this embodiment, it is preferably 2×D1<D2.

[0060] It should be noted that when 2×D1<D2, it can make the sum of the thicknesses of the rib 20 and the sealing lip 2 much larger than the thickness of the sealing lip 2 at the interference part 22, so as to maximize the use effect of the rib 20, effectively prevent the vibration transmission process on the sealing lip 2 when closing the door, and prevent whistling.

[0061] Furthermore, the thickness of the sealing lip 2 at the abutting area is less than 1.2 millimeters, that is, D1<1.2 millimeters.

[0062] In this embodiment, the sealing lip 2 may include a semi-circular first lip and a semi-circular second lip. The first lip and the second lip are butted to form the sealing lip 2, and the first lip is located above the second lip when the sealing lip 2 abuts against an external object; at least the first lip is provided with a rib 20.

[0063] During the use of the cooking device, the high-temperature airflow causing whistling is usually formed by steam, and the steam moves upward. Therefore, the whistling phenomenon usually occurs at the upper door opening of the cooking device. Correspondingly, the whistling phenomenon usually occurs at the first lip.

[0064] Based on this, in this embodiment, by providing the rib 20 on at least the first lip of the sealing lip 2, the function of preventing whistling can be achieved.

[0065] It should be noted that if there is only a convex rib 20 provided on the first lip edge, when assembling the cooking device, it is also necessary to accurately distinguish the position of the first lip edge so that the convex rib 20 is located at the upper door frame 30 of the cooking device.

[0066] It can be seen that only providing the convex rib 20 on the first lip edge will increase the assembly operation of the sealing ring and reduce the assembly efficiency. At this time, to improve the assembly convenience of the sealing ring, convex ribs 20 can be respectively provided on the first lip edge and the second lip edge, and the convex rib 20 on the first lip edge and the convex rib 20 on the second lip edge are butted to form an annular convex rib 20, and the annular convex rib 20 extends along the circumferential direction of the sealing lip edge 2.

[0067] Among them, the shape of the convex rib 20 is not limited, as long as the convex rib 20 can play a role in destroying the uniform structure of the thin wall of the sealing lip edge 2. For example, the convex rib 20 can extend along the circumferential direction of the sealing lip edge 2 in a smooth straight line or arc shape, or the convex rib 20 can extend along the circumferential direction of the sealing lip edge 2 in a wavy shape.

[0068] This embodiment also provides a cooking device, which includes a cooking container, a door body 31 and the above-mentioned sealing ring; the cooking container is provided with a door opening, the door body 31 is hinged at the door opening, and the door body 31 can close or open the door opening; the sealing ring body 1 is fixed on the periphery of the door opening, and the sealing lip edge 2 is used to abut between the sealing ring body 1 and the door body 31 when the door body 31 closes the door opening.

[0069] This embodiment also provides a cooking device, which includes the above-mentioned sealing ring. It can also use the convex rib 20 on the sealing lip edge 2 in the sealing ring to destroy the uniform structure of the thin wall of the sealing lip edge 2. Therefore, the cooking device provided by this embodiment and the above-mentioned sealing ring can solve the same technical problems and achieve the same technical effects, which will not be elaborated here.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sealing ring, characterized in that, It includes a sealing ring body (1) and an annular sealing lip (2); The sealing lip (2) is provided on one side of the sealing ring body (1), and the sealing lip (2) extends along the circumferential direction of the sealing ring body (1); An included angle is formed between the sealing lip (2) and the sealing ring body (1). The side of the sealing lip (2) far from the sealing ring body (1) is used to abut against an external object, and a rib (20) extending along its circumferential direction is provided on the side of the sealing lip (2) close to the sealing ring body (1).

2. The sealing ring according to claim 1, characterized in that, The sealing lip (2) includes an annular connecting portion (21) and an annular interference portion (22). The connecting portion (21) is fixedly connected to the sealing ring body (1). The interference portion (22) is located on the side of the connecting portion (21) far from the sealing ring body (1), and the interference portion (22) is used for interference fit between the connecting portion (21) and an external object.

3. The sealing ring according to claim 2, wherein, The rib (20) is provided at the junction of the connecting portion (21) and the interference portion (22).

4. The sealing ring according to claim 1, wherein The side of the sealing lip (2) connected to the sealing ring body (1) is the connecting side, and the side of the sealing lip (2) far from the sealing ring body (1) is the suspended side; Along the abutting direction between the sealing lip (2) and an external object, the vertical distance between the connecting side and the suspended side is the depth of the sealing lip (2); the straight-line distance between the connecting side and the suspended side of the sealing lip (2) is the width of the sealing lip (2); The width of the sealing lip (2) is greater than the depth of the sealing lip (2).

5. The sealing ring according to claim 4, characterized in that, The straight-line distance between the suspended side of the sealing lip (2) and the rib (20) is less than 3 millimeters.

6. The sealing ring according to claim 1, wherein, The area between the side of the sealing lip (2) far from the sealing ring body (1) and the rib (20) is the abutting area, and the thickness of the abutting area of the sealing lip (2) is less than the thickness of the rib (20).

7. The sealing ring according to claim 6, wherein The thickness of the abutting area of the sealing lip (2) is less than 1.2 millimeters.

8. The sealing ring according to any one of claims 1-7, characterized in that, The sealing lip (2) includes a semi-annular first lip and a semi-annular second lip. The first lip and the second lip are butted to form the sealing lip (2), and the first lip is located above the second lip when the sealing lip (2) abuts against an external object; At least the first lip is provided with the rib (20).

9. The sealing ring according to any one of claims 1-7, characterized in that, The rib (20) extends in a wavy shape along the circumferential direction of the sealing lip (2).

10. A cooking device, characterized in that, It includes a cooking container, a door body (31), and the sealing ring according to any one of claims 1-9; The cooking container is provided with a door opening. The door body (31) is hinged at the door opening, and the door body (31) can close or open the door opening; The sealing ring body (1) is fixed to the periphery of the door opening, and the sealing lip (2) is used to abut between the sealing ring body (1) and the door body (31) when the door body (31) closes the door opening.

Images