Range hood sealing ring

Abstract

The utility model relates to the field of sealing rings, and discloses a sealing ring of a range hood. A smoke exhaust ventilator sealing ring comprises a rubber ring with four corners arranged in a round corner mode, an arc-shaped groove facing the outer side wall of the rubber ring is formed in the inner side wall of the rubber ring, the rubber ring is connected with a positioning part and a protruding part which are connected with each other, and a protruding strip is connected to the outer side wall of the rubber ring. A lap joint cavity is formed by the protruding strip and the protruding part. The oil resistance and the sealing performance of the sealing ring can be improved.

Description

Technical Field

[0001] The utility model relates to the field of sealing rings, in particular to a sealing ring for a range hood. Background Art

[0002] As an essential kitchen appliance in modern families, the range hood is installed above the kitchen stove. It can quickly extract the waste generated by the stove combustion and the harmful fumes produced during the cooking process outdoors, reduce pollution, purify the air, and has the safety protection functions of preventing poisoning and explosion.

[0003] Generally, the range hood generates a certain negative pressure at the smoke extraction port through a rotating impeller, attracts the surrounding air flow to enter, sucks the indoor fume gas into the working cavity of the range hood and exports it from the top output end of the air duct. When the range hood is working, it is in a high-temperature and high-oil environment. In order to ensure that the range hood can work for a long time, the sealing ring of the range hood needs to have good sealing performance.

[0004] The sealing ring of the traditional range hood has poor oil resistance. In a high-temperature and high-oil environment, the sealing ring is prone to aging, resulting in poor sealing performance and affecting the use of the range hood. Summary of the Utility Model

[0005] In order to improve the oil resistance and sealing performance of the sealing ring, the present application provides a sealing ring for a range hood.

[0006] The sealing ring for a range hood provided by the present application adopts the following technical solutions:

[0007] A sealing ring for a range hood includes a rubber ring with rounded corners at four corners. An arc-shaped groove is formed on the inner side wall of the rubber ring and faces the outer side wall of the rubber ring. The rubber ring is connected with a positioning part and a protruding part that are connected to each other. A protruding strip is connected to the outer side wall of the rubber ring, and a lapping cavity is formed between the protruding strip and the protruding part.

[0008] By adopting the above technical solutions, the formed lapping cavity is adapted to the structure of the corresponding part of the range hood. Thus, the sealing ring is arranged on the range hood by the abutment of the protruding strip, the positioning part and the protruding part with the corresponding part of the range hood, and the sealing performance of the sealing ring for the range hood is realized.

[0009] In a preferred example of the present utility model, the protruding strips are arranged at intervals on the outer side wall of the rubber ring, and the positions of the protruding strips correspond to the protruding parts.

[0010] In a preferred example, the present utility model can be further configured such that the protruding portion includes an inner protruding strip and an outer protruding strip arranged discontinuously. The inner protruding strip is close to the inner side wall of the rubber ring, and the outer protruding strip is close to the outer side wall of the rubber ring. A lapping cavity is formed between the inner protruding strip and the outer protruding strip, and between the outer protruding strip and the protruding strip.

[0011] By adopting the above technical solution, the inner protruding strip and the outer protruding strip are arranged to match the shape of the corresponding position of the range hood, and a large contact area is formed between the sealing ring and the corresponding part of the range hood. The fixing of the sealing ring is realized through static friction, which is more conducive to the stability of the placement of the sealing ring.

[0012] In a preferred example, the present utility model can be further configured such that four arc-shaped grooves are provided, and all four arc-shaped grooves are located in the middle of the inner side wall of the rubber ring. The heights of two opposite arc-shaped grooves are greater than the heights of the other two opposite arc-shaped grooves.

[0013] By adopting the above technical solution, the arc-shaped grooves with different heights adapt to the requirements of the corresponding positions of the range hood.

[0014] In a preferred example, the present utility model can be further configured such that a placement groove is formed on one side of the rubber ring away from the positioning portion and the protruding portion. The position of the placement groove corresponds to the position of the positioning portion, and a through groove extending to the positioning portion is formed in the middle of the placement groove.

[0015] By adopting the above technical solution, the arrangement of the placement groove and the through groove enables the oil accumulated on the sealing ring to flow outside the sealing ring to a certain extent, reducing the corrosion of the oil on the sealing ring.

[0016] In a preferred example, the present utility model can be further configured such that a circular hole is formed on one side of the rubber ring away from the positioning portion and the protruding portion. The circular hole is located on the side wall of the rubber ring where the height of the arc-shaped groove is smaller.

[0017] In a preferred example, the present utility model can be further configured such that stripes are provided on one side of the rubber ring away from the positioning portion and the protruding portion. The stripes are located at the part of the rubber ring close to the outer side wall. A butting groove is formed on one side away from the positioning portion and the protruding portion of one of the arc-shaped grooves with a larger height.

[0018] By adopting the above technical solution, the structure of the rubber ring is matched with the structure of the corresponding part of the range hood. The stripes play an anti-slip role, and the arrangement of the butting groove facilitates the removal of the sealing ring from the range hood.

[0019] In a preferred example, the present utility model can be further configured such that the sealing ring is made of nitrile rubber as a whole.

[0020] By adopting the above technical solution, the use of nitrile rubber improves the oil resistance of the sealing ring, enabling the sealing ring to maintain good sealing performance in a high-oil environment, and the range hood can work for a long time.

[0021] In summary, the present application has the following beneficial effects:

[0022] The sealing ring of the present application is used in cooperation with the corresponding part of the range hood, and its shape and structure are adapted to the corresponding part of the range hood. By increasing the contact area, it is beneficial to the stable placement of the sealing ring and improves the sealing effect; the nitrile rubber material improves the oil resistance of the sealing ring, enabling the range hood to work for a long time in a high-temperature and high-oil environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the overall sealing ring of the embodiment of the present application;

[0024] Figure 2 is a schematic plan view of one side of the sealing ring of the embodiment of the present application;

[0025] Figure 3 is a schematic plan view of the other side of the sealing ring of the embodiment of the present application.

[0026] Description of the reference numerals:

[0027] 1, rubber ring; 11, arc groove; 2, positioning part; 3, convex part; 31, inner convex strip; 32, outer convex strip; 4, protruding strip; 41, overlapping cavity; 5, placement groove; 51, through groove; 6, round hole; 7, stripe; 8, abutting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further describes the present application in detail Figures 1-3 with reference to the accompanying drawings.

[0029] The embodiment of the present application discloses a sealing ring for a range hood. Referring to Figure 1 , a sealing ring for a range hood includes a rubber ring 1. The rubber ring 1 is provided with an arc groove 11. The rubber ring 1 is connected with a positioning part 2, a convex part 3 and a protruding strip 4. The protruding strip 4 and the convex part 3 form an overlapping cavity 41, and the connection with the corresponding part of the range hood is realized through the overlapping cavity 41.

[0030] Referring to Figure 1 and Figure 2, the rubber ring 1 is set as a hollow square, and the four corners of the square are rounded. The rubber ring 1 includes an inner side wall and an outer side wall, and the rounding radian of the outer side wall is greater than that of the inner side wall. An arc-shaped groove 11 is provided in the middle of the inner side wall of the rubber ring 1. The number of the arc-shaped grooves 11 is four, and the arc-shaped grooves 11 are arranged towards the outer side wall direction of the rubber ring 1. Among the four arc-shaped grooves 11, the heights of two opposite arc-shaped grooves 11 are greater than those of the other two opposite arc-shaped grooves 11.

[0031] The positioning portion 2, the protruding portion 3 and the protruding strip 4 are arranged on the same side of the rubber ring 1. The positioning portion 2 and the protruding portion 3 are connected to each other and arranged at intervals. The protruding portion 3 includes an inner protruding strip 31 and an outer protruding strip 32. The inner protruding strip 31 is close to the inner side wall of the rubber ring 1, and the outer protruding strip 32 is close to the outer side wall of the rubber ring 1. Among them, the outer protruding strip 32 is arranged along the circumference of the rubber ring 1. On both sides of the rubber ring 1 where the arc-shaped groove 11 with a larger height is provided, the inner protruding strip 31 only exists at both ends of the arc-shaped groove 11, while on both sides of the rubber ring 1 where the arc-shaped groove 11 with a smaller height is provided, both the inner protruding strip 31 and the outer protruding strip 32 are arranged along the side of the arc-shaped groove 11.

[0032] The protruding strip 4 is connected to the outer side wall of the rubber ring 1. The protruding strips 4 are arranged at intervals. The positions of the protruding strips 4 correspond to the protruding parts and the outer protruding strip 32. No protruding strip 4 is provided at the part of the outer side wall corresponding to the positioning portion 2. A lapping cavity 41 is formed between the inner protruding strip 31 and the outer protruding strip 32, and between the outer protruding strip 32 and the protruding strip 4. When installing the sealing ring on the range hood, the sealing ring is set on the range hood by the abutment of the protruding strip 4, the positioning portion 2 and the protruding portion 3 with the corresponding parts of the range hood, and is fixed by the mutual static friction force. Therefore, by providing the lapping cavity 41 with a larger contact area, it is beneficial to increase the friction force, thereby improving the sealing effect and ensuring the stability of the sealing ring.

[0033] Refer to Figure 3 , an installation groove 5 and a round hole 6 are provided on the side of the rubber ring 1 far from the positioning portion 2 and the protruding portion 3. Among them, the position of the installation groove 5 corresponds to the position of the positioning portion 2. The groove wall of the installation groove 5 is provided with lines. A through groove 51 is provided in the middle of the installation groove 5, and the through groove 51 extends to the positioning portion 2. The round holes 6 are located on both sides of the rubber ring 1 where the arc-shaped groove 11 with a smaller height is provided.

[0034] The rubber ring 1 is also provided with stripes 7 at the part close to the outer side wall. The stripes 7 are arranged on the same side as the installation groove 5 and the round hole 6. The stripes 7 play a role in anti-slip and increasing friction. An abutting groove 8 is provided on one of the arc-shaped grooves 11 with a larger height. The abutting groove 8 is located on the same side as the stripes 7. Through the abutting groove 8, it is convenient for the user to remove the sealing ring for replacement.

[0035] The entire sealing ring is made of nitrile rubber. The positioning part 2, the protruding strip 4, the protruding part 3 and the rubber ring 1 are integrally formed, which is convenient for injection molding during manufacturing, and at the same time, the overall connection tightness is stronger. The use of nitrile rubber improves the oil resistance of the sealing ring, enabling the sealing ring to maintain good sealing performance in a high-oil environment, so that the range hood can work for a long time in a high-temperature and high-oil environment.

[0036] This specific embodiment is only an interpretation of the present application and does not limit the present application. After reading this specification, those skilled in the art can make modifications to this specific embodiment without creative contributions as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An oil fume extractor sealing ring, characterized in that: It includes a rubber ring (1) with four rounded corners. An arc-shaped groove (11) facing the outer side wall of the rubber ring (1) is provided on the inner side wall of the rubber ring (1). The rubber ring (1) is connected with a positioning part (2) and a convex part (3) which are connected to each other. A protruding strip (4) is connected to the outer side wall of the rubber ring (1). A lapping cavity (41) is formed between the protruding strip (4) and the convex part (3).

2. The oil fume extractor sealing ring according to claim 1, wherein: The protruding strips (4) are arranged at intervals on the outer side wall of the rubber ring (1), and the positions of the protruding strips (4) correspond to those of the convex parts (3).

3. The range hood sealing ring according to claim 1, characterized in that: The convex part (3) includes an inner convex strip (31) and an outer convex strip (32) which are arranged discontinuously. The inner convex strip (31) is close to the inner side wall of the rubber ring (1), and the outer convex strip (32) is close to the outer side wall of the rubber ring (1). The lapping cavity (41) is formed between the inner convex strip (31) and the outer convex strip (32), and between the outer convex strip (32) and the protruding strip (4).

4. The range hood sealing ring according to claim 1, characterized in that: There are four arc-shaped grooves (11), and the four arc-shaped grooves (11) are all located in the middle of the inner side wall of the rubber ring (1). The heights of two opposite arc-shaped grooves (11) are greater than those of the other two opposite arc-shaped grooves (11).

5. The range hood sealing ring according to claim 3, wherein: On one side of the rubber ring (1) away from the positioning part (2) and the convex part (3), an installation groove (5) is provided. The position of the installation groove (5) corresponds to that of the positioning part (2), and a through groove (51) extending to the positioning part (2) is provided in the middle of the installation groove (5).

6. The oil fume extractor sealing ring according to claim 4, characterized in that: On one side of the rubber ring (1) away from the positioning part (2) and the convex part (3), a round hole (6) is provided. The round hole (6) is located on the side wall of the rubber ring (1) with a smaller height of the arc-shaped groove (11).

7. The oil fume extractor sealing ring according to claim 1, wherein: On one side of the rubber ring (1) away from the positioning part (2) and the convex part (3), stripes (7) are provided. The stripes (7) are located at the part of the rubber ring (1) close to the outer side wall. An abutting groove (8) is provided on one side away from the positioning part (2) and the convex part (3) of one of the arc-shaped grooves (11) with a greater height.

8. The oil fume extractor sealing ring according to claim 1, characterized in that: The whole sealing ring is made of nitrile rubber material.

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