Connecting piece for oil smoke suction device

Abstract

The utility model discloses a connecting piece for an oil smoke suction device. The connecting piece comprises a hollow switching part with two open ends, the number of the switching parts is at least two, the switching parts are coaxially arranged, the adjacent switching parts are connected with each other, the joints of the adjacent switching parts jointly form a cutting section, and the wall thickness of the cutting section is smaller than that of the switching parts. Compared with the prior art, the utility model has the advantages that the cutting section with smaller wall thickness is formed at the connecting part of the switching part, and the design of the local weak section increases the easy cutting property, so that a user can quickly and efficiently cut according to the field condition; thicker wall thickness of other parts can be ensured, so that enough reliability is ensured.

Description

Technical Field

[0001] This utility model relates to the field of oil fume extraction device technology, and in particular to a connector for an oil fume extraction device. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They operate on the principles of fluid dynamics, using a centrifugal fan inside to draw in and exhaust cooking fumes, and a filter to remove some of the grease particles.

[0003] When a range hood exhausts smoke, it needs an exhaust pipe to discharge the inhaled fumes outdoors. For example, Chinese Patent Application No. 202221652929.9 discloses an exhaust pipe connection structure for a range hood, comprising: a first exhaust pipe with a first connection port; a second exhaust pipe with a second connection port; and an adapter sleeve with opposing first and second interfaces. The first interface of the adapter sleeve has a first inner ring and a first outer ring, the first outer ring being located outside the first inner ring, and defining a first slot therebetween for the first connection port of the first exhaust pipe to be inserted. The second interface of the adapter sleeve has a second inner ring and a second outer ring, the second outer ring being located outside the second inner ring, and defining a second slot therebetween for the second connection port of the second exhaust pipe to be inserted.

[0004] In the aforementioned existing technology, an adapter is required to connect the first and second smoke pipes. The problems with this adapter include:

[0005] 1. PP plastic parts are commonly used and can be cut with a knife or scissors. However, in order to make them easy to cut, the wall thickness needs to be very thin, usually 0.8mm. This results in poor overall strength and low reliability of the product, making it easy to break or be damaged. When cutting with a knife or scissors, it is difficult to ensure that the entire plane of the cut section is on the same plane, which poses a risk of oil leakage.

[0006] 2. The actual on-site transfer requirements vary greatly. The size of specialized transfer parts cannot meet the needs of most environments, resulting in the need to build a lot of materials and open many molds, which leads to excessive investment and high management costs.

[0007] 3. When using a stepped straight edge to press and fit with the interface that needs to be connected, gaps are inevitable. These gaps pose a risk of smoke leakage, water leakage, and oil leakage.

[0008] 4. When fixing, the method of using pointed screws to directly impact the surface of plastic parts can easily lead to an enlarged hole diameter during drilling, posing a risk of oil leakage. Furthermore, excessive drilling force can cause slippage, making the operation difficult and inefficient.

[0009] Therefore, further improvements are needed. Utility Model Content

[0010] The first technical problem to be solved by this utility model is to provide a connector for a fume extraction device that addresses the shortcomings of the existing technology, ensuring both product reliability and ease of cutting.

[0011] The second technical problem to be solved by this utility model is to provide a connector for a fume extraction device that improves applicability, addressing the shortcomings of the prior art.

[0012] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a connector for a fume extraction device that can improve the connection sealing performance.

[0013] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a connector for a fume extraction device that can be easily fixed and reduces the risk of oil leakage.

[0014] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a connector for a fume extraction device, comprising a hollow transition portion with openings at both ends; characterized in that:

[0015] The adapter has at least two parts, each adapter is arranged coaxially, and adjacent adapters are connected to each other. The connection between adjacent adapters forms a cutting section, and the wall thickness of the cutting section is less than the wall thickness of the adapter.

[0016] By creating a thinner cutting section at the junction of the transition parts, this locally weak section design increases ease of cutting, allowing users to cut quickly and efficiently according to site conditions; while other parts can ensure a thicker wall, thus ensuring sufficient reliability.

[0017] Preferably, to facilitate easy cutting around the perimeter, the cutting segment is an annular recess, formed by the recess of the outer surface of the peripheral wall of the transition portion towards the inner surface.

[0018] Furthermore, the cut section is triangular in axial cross-section of the connector, with the apex of the triangle facing inwards towards the transition portion. This inverted triangular guide rail design serves as a guide during the cutting process, ensuring planar consistency after cutting.

[0019] Preferably, to ensure good cutting ease, the wall thickness of the cutting segment at the vertex of the triangle is 0.5mm to 1.0mm.

[0020] Preferably, to ensure good reliability of the adapter, the wall thickness of the adapter is 1.5mm to 2.5mm.

[0021] The technical solution adopted by this utility model to solve the second technical problem mentioned above is that the diameters of the various adapters are not completely the same.

[0022] This can meet most of the conversion scenarios in the market. One part and one set of molds can be used in most scenarios, increasing adaptability.

[0023] Furthermore, to facilitate the connection of adapters with different diameters, each adapter includes a hollow body with openings at both ends. The ends of the bodies of adjacent adapters are connected to each other. When adjacent adapters with different diameters are connected to each other, the end of the body with the larger diameter is bent radially inward to form a bent portion, which is connected to the body with the smaller diameter.

[0024] The technical solution adopted by this utility model to solve the third technical problem mentioned above is as follows: each transition part includes a hollow body with openings at both ends, the ends of the bodies of adjacent transition parts are connected to each other, and an outwardly protruding sloping section is formed on the peripheral wall of the body, and the highest point of the sloping section is inclined on at least one side facing the opposite ends of the body axis.

[0025] By creating a ramp section, the connector can fit more tightly with the external adapter, avoiding problems such as oil and smoke leakage.

[0026] The technical solution adopted by this utility model to solve the fourth technical problem mentioned above is as follows: each transition part includes a hollow body with openings at both ends, the ends of the bodies of adjacent transition parts are connected to each other, and the transition part also includes a recessed platform formed on the outer surface of the peripheral wall of the body.

[0027] The recessed platform design facilitates user fixation, improves work efficiency, and reduces the risk of oil leaks.

[0028] Compared with existing technologies, the advantages of this utility model are as follows: By forming a thinner cutting section at the connection of the adapter, this locally weak section design increases the ease of cutting, allowing users to quickly and efficiently cut according to the site conditions; while other parts can ensure a thicker wall, thus ensuring sufficient reliability; the adapter diameters are not completely uniform, thereby meeting most adapter scenarios in the market, and one part and one set of molds can be used for most scenarios, increasing adaptability; the sloped section formed by the adapter allows for a tighter fit between the connector and the external adapter, avoiding problems such as oil and smoke leakage; the recessed design of the adapter facilitates user fixation, improving work efficiency and reducing the risk of oil leakage. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the connector according to an embodiment of the present utility model;

[0030] Figure 2This is a schematic diagram of the connection between the connector and the exhaust pipe in an embodiment of the present utility model;

[0031] Figure 3 This is a cross-sectional view of the connection between the connector and the exhaust pipe in an embodiment of this utility model;

[0032] Figure 4 for Figure 3 A magnified schematic diagram of part I. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0035] See Figure 1 A connector for a fume extraction device includes at least two hollow transition portions 1, each transition portion 1 having a circular cross-section and openings at both axial ends. The transition portions 1 are coaxially arranged, and adjacent transition portions 1 are interconnected. Figure 2 As shown, the connector is used to connect to the smoke exhaust pipe 100. Optionally, the connector can also be used to connect to a fire damper. The adapter 1 is made of flame-retardant PP material with a wall thickness of 1.5mm to 2.5mm, and can be used for adapters in high-temperature environments.

[0036] The diameters of the various adapter parts 1 are not exactly the same, as in this embodiment, see [reference]. Figure 1From bottom to top, the diameters of the adapter parts 1 are 180mm (3 pieces), 160mm (3 pieces), 150mm, and 140mm, totaling eight adapter parts 1. Adapter parts 1 with different diameters can be used to adapt and connect to external connection objects of different sizes. Using the adapter parts 1 with the diameters described above in this embodiment can basically meet most of the connection needs on the market. Of course, the number and diameter of the adapter parts 1 can be determined according to needs. The diameter of each adapter part 1 and the corresponding specifications of the connection object (such as a smoke exhaust pipe or fire damper) can be engraved on the corresponding adapter part 1 for user reference and cutting.

[0037] See also Figures 1-4 Each adapter 1 includes a hollow body 11 with openings at both ends. The ends of the bodies 11 of adjacent adapters 1 are connected to each other. When adapters 1 of different diameters are connected, a step-like structure is formed between the corresponding two bodies 11. That is, the end of the larger diameter body 11 needs to be bent radially inward to form a bent portion 12, which is then connected to the smaller diameter body 11. The connection point of adjacent bodies 11 or the connection point of body 11 and bent portion 12 together form a cutting section 2. The cutting section 2 is an annular recess, recessed from the outer surface of the peripheral wall of the adapter 1 towards the inner surface, forming a locally weak section for cutting. The wall thickness at the weakest point can be 0.5mm to 1.0mm. The cutting section 2 is defined in the axial section of the connector (the plane passing through the axis of each adapter 1 is taken as the section, e.g.) Figure 3 and Figure 4 As shown, the cutting section 2 is triangular, with the vertex of the triangle facing inwards towards the interior of the transition section 1. The vertex of the triangle is the weakest point. Therefore, the interior of the cutting section 2 is configured as an inverted triangular guide rail, which allows the user to always cut under guidance during the cutting process, making it less likely to deviate and greatly ensuring that the surface of the cutting section is on the same plane (i.e., at the vertex of the triangle).

[0038] A sloping section 13 protruding outward is formed on the peripheral wall of the body 11. The highest point of the sloping section 13 faces opposite ends along the axial direction of the body 11, and at least one side forms a slope 131. In this embodiment, the highest point of the sloping section 13 forms a slope 131 in both directions towards opposite ends along the axial direction of the body 11. There is a certain gap between the end of the slope 131 away from the corresponding end of the body 11. Thus, when the connector is fitted with the exhaust pipe 100, the slope 131 of the sloping section 13 can fit snugly against the exhaust pipe 100 (to clearly show the connection effect, ...). Figure 3The connector shown is not cut, but in actual use, the user can cut it according to the size of the adapter before connecting so that the adapter 1 with the appropriate diameter can fit with the exhaust pipe 100, forming a line-surface contact, thereby making the two fit tightly and have good sealing performance. It should be noted that although the ramp section 13 is not shown in each adapter 1 in this embodiment, each adapter 1 can obviously have a ramp section 13.

[0039] The adapter 1 also includes a recessed platform 14 formed on the outer surface of the peripheral wall of the main body 11. The recessed platform 14 can be formed between the ramp section 13 and the axial end of the main body 11. After the exhaust pipe 100 and the connector are attached, screws are driven into the reserved recessed platform 14 to ensure the tangential force of the exhaust pipe 100 and the connector. Finally, tape is used to wrap the joint to ensure the overall sealing performance. This method can take into account the advantages of reliability, adaptability, versatility, easy cutting, and flame retardancy.

Claims

1. A connecting piece for an oil fume extractor, comprising a hollow and open-ended adapter (1); characterized in that: the adapter (1) has at least two, each adapter (1) is arranged coaxially, and adjacent adapters (1) are connected to each other, the connection of adjacent adapters (1) forms a cutting section (2) together, the wall thickness of the cutting section (2) is smaller than that of the adapter (1).

2. The connector for a cooking fume extraction device according to claim 1, wherein: The cutting section (2) is annularly recessed, and is formed by recessing from the outer surface to the inner surface of the peripheral wall of the adapter (1).

3. The connector for a cooking fume extraction device according to claim 2, wherein: The cutting section (2) is triangular in the axial cross section of the connecting piece, and the apex of the triangle is directed to the inside of the adapter (1).

4. The connector for a cooking fume extraction device according to claim 3, wherein: The wall thickness of the cutting section (2) at the apex of the triangle is 0.5mm-1.0mm.

5. The connection for a cooking fume extraction device according to any one of claims 1 to 4, characterized in that: The wall thickness of the adapter (1) is 1.5mm-2.5mm.

6. The connector for a cooking fume extraction device according to any one of claims 1 to 4, wherein: The diameters of each adapter (1) are not completely the same.

7. The connector for a cooking fume extraction device according to claim 6, wherein: Each adapter (1) comprises a hollow and open-ended body (11), and the end portions of the bodies (11) of adjacent adapters (1) are connected to each other, when adjacent adapters (1) with different diameters are connected to each other, the end portion of the body (11) with a larger diameter is bent radially inward to form a bent portion (12), and the bent portion (12) is connected to the body (11) with a smaller diameter.

8. The connector for a cooking fume extraction device according to any one of claims 1 to 4, wherein: Each adapter (1) comprises a hollow and open-ended body (11), and the end portions of the bodies (11) of adjacent adapters (1) are connected to each other, and a slope section (13) is formed on the peripheral wall of the body (11) and protrudes outward, and the protruding highest part of the slope section (13) is inclined (131) toward at least one side of the opposite axial ends of the body (11).

9. The connector for a cooking fume extraction device according to any one of claims 1 to 4, wherein: Each adapter (1) comprises a hollow and open-ended body (11), and the end portions of the bodies (11) of adjacent adapters (1) are connected to each other, and the adapter (1) further comprises a sunken platform (14) formed on the outer surface of the peripheral wall of the body (11).

Images