A range hood

Abstract

The utility model relates to range hood technical field discloses a range hood, including range hood body and setting at range hood body upper end air outlet department and can with flue pipe connect's air outlet seat, the air outlet seat includes the fixed base that passes through bolt and range hood body fixed connection and sets up the connecting cylinder at the fixed base upper end, the connecting cylinder is the taper cylinder shape structure that upper end spout is less than lower end spout, be provided with the locking mechanism that can fix flue pipe on the connecting cylinder, the upper end of fixed base is cylindrical and is equipped with external thread on the upper end of fixed base, the connecting cylinder is screwed on the upper end of fixed base, the locking mechanism includes locking zone, fixed end and extension zone, the locking zone is covered and is set on the connecting cylinder, the fixed end is fixedly installed in one end of locking zone, and the other end of locking zone is equipped with a plurality of clamping slots. Its purpose is to solve the problem that the existing range hood cannot be compatible with different diameter exhaust pipes.

Description

Technical Field

[0001] This utility model belongs to the field of range hood technology, and specifically relates to a range hood. Background Technology

[0002] As a core piece of equipment in the kitchen environment, the range hood's exhaust port is a key component connecting the unit to the exhaust pipe, directly affecting the exhaust efficiency and installation reliability. In existing technology, the range hood's exhaust port usually adopts an integrated structure design with a fixed pipe diameter, and its inner diameter is strictly matched with the exhaust pipe of a specific specification.

[0003] However, when users need to choose exhaust pipes of different diameters due to kitchen layout or shared flue limitations, fixed-size outlet mounts are incompatible and must be connected using adapters, reducers, or other additional accessories. This not only increases the user's procurement costs but also complicates the connection structure and can easily lead to air leakage or vibration and noise problems due to mismatched accessories.

[0004] In view of this, we propose a range hood to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the exhaust pipe connection seat of existing range hoods cannot be compatible with exhaust pipes of different diameters.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A range hood includes a range hood body and an air outlet seat disposed at the upper end of the range hood body and capable of connecting to a flue pipe. The air outlet seat includes a fixing seat fixedly connected to the range hood body by bolts and a connecting cylinder disposed at the upper end of the fixing seat. The connecting cylinder is a conical cylindrical structure with an upper opening smaller than a lower opening. The connecting cylinder is provided with a locking mechanism to fix the flue pipe. Multiple connecting rings are provided in a stepped manner on the outer wall of the connecting cylinder, and each of the multiple connecting rings has an annular groove.

[0008] Furthermore, the upper end of the fixing base is cylindrical and has an external thread, and the connecting cylinder is threadedly connected to the upper end of the fixing base. This structural design, with the connecting cylinder threadedly connected to the upper end of the fixing base, facilitates the disassembly of the connecting cylinder for cleaning or maintenance.

[0009] Further defining the locking mechanism, it includes a locking band, a fixed end, and an extension band. The locking band is sleeved on the connecting cylinder, the fixed end is fixedly installed at one end of the locking band, and the other end of the locking band has several slots. The fixed end contains elastic locking posts that fit into the slots. The extension band is fixedly installed on the side of the fixed end away from the locking band. This structural design allows for easy installation of the exhaust pipe. The extension band is sleeved on the exhaust pipe, allowing the end of the locking band to pass through the fixed end. Pulling the end of the locking band causes the elastic locking posts to engage with the slots, creating a one-way locking action between the fixed end and the locking band, thus tightening the locking band and securing the exhaust pipe. The structure is simple and easy to use.

[0010] Furthermore, a pressure pad is provided on the side of the locking band near the connecting cylinder, and both the pressure pad and the extension band are made of rubber. This structural design allows the pressure pad and extension band, due to their rubber material, to fit more tightly against the exhaust pipe, enhancing the locking effect of the locking mechanism.

[0011] Furthermore, the fixed base is internally equipped with a check mechanism, which includes a mounting strip, two symmetrically fixed columns mounted on the mounting strip, a rotating shaft rotatably mounted between the two fixed columns, and two semi-circular rotating valve plates rotatably mounted on the rotating shaft. A torsion spring is provided between the two rotating valve plates. With this structural design, when the range hood is working and an upward airflow is generated within the fixed base, the rotating valve plates flip, allowing the fumes to pass through normally. When the range hood stops working, the rotating valve plates close, preventing external odors or backflow of fumes.

[0012] Furthermore, the lower end of the mounting strip is fixedly fitted with two clips, which are located directly below the two fixing posts. The inner wall of the fixing base is fixedly fitted with two corresponding retaining seats. This structural design makes the check mechanism detachable, facilitating disassembly for cleaning and maintenance.

[0013] Further, each of the two fixed posts is fixedly equipped with a pull strap, and two pull ropes are fixedly connected to the inner side of the pull strap. The ends of the two pull ropes pass through the fixed post, the mounting strip, and the buckle, and are connected to the two legs of the buckle. With this structural design, when the pull strap is pulled upward, the pull ropes are pulled upward, thereby pulling the two legs to move towards each other and disengage them from the buckle, which facilitates the disassembly of the anti-return mechanism.

[0014] Furthermore, a V-shaped baffle is fixedly installed inside the mounting base, and the V-shaped baffle is located below the mounting bracket. This structural design allows the V-shaped baffle to guide the fumes during operation, enabling them to more smoothly impact the check mechanism.

[0015] Furthermore, the mounting base, connecting cylinder, and V-shaped guide plate are all made of aluminum alloy. This structural design utilizes the flame-retardant and lightweight nature of aluminum alloy.

[0016] Furthermore, the inner walls of the mounting base and connecting cylinder, as well as the surface of the V-shaped guide plate, are provided with an oleophobic layer. This structural design reduces the adhesion of oil stains to the mounting base, connecting cylinder, and V-shaped guide plate.

[0017] The utility model employing the above technical solution has the following advantages:

[0018] 1. This utility model has a conical cylindrical connecting cylinder that can support exhaust pipes of different diameters. During connection, simply put the end of the exhaust pipe onto the connecting cylinder, and then fix the exhaust pipe through the locking mechanism. It is compatible with exhaust pipes of different sizes and does not require transitional connection through additional accessories such as adapter rings or reducers, making installation more convenient.

[0019] 2. In this utility model, when installing the exhaust pipe, the extension strap is sleeved on the exhaust pipe, so that the end of the locking strap passes through the fixed end. Then, the end of the locking strap is pulled, and the elastic locking post cooperates with the locking groove to make the fixed end engage with the locking strap in one direction, so that the locking strap is tightened and the exhaust pipe is fixed. The structure is simple and easy to use.

[0020] 3. In this utility model, when the range hood is working and an upward airflow is generated in the fixed base, the rotating valve plate can be flipped to allow the oil fumes to pass through normally. When the range hood stops working, the rotating valve plate can be closed to prevent external odors or oil fumes from flowing back in.

[0021] 4. In this utility model, by setting up a pull strap and a pull rope, when the pull strap is pulled upward, the pull rope can be pulled upward, thereby pulling the two support legs to move towards each other, so that they are disengaged from the card seat, which facilitates the disassembly of the anti-return mechanism.

[0022] 5. In this utility model, by setting a guide plate, the V-shaped guide plate guides the oil fumes when the range hood is working, so that the oil fumes can more smoothly impact the check mechanism. Attached Figure Description

[0023] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0024] Figure 1 This is a schematic diagram of the structure of a range hood according to the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the air outlet seat in a range hood according to the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a range hood with the connecting cylinder and the fixed base separated.

[0027] Figure 4 This is a cross-sectional view of the air outlet seat portion of a range hood according to the present invention.

[0028] Figure 5 This is a schematic diagram of the locking mechanism in a range hood according to the present invention;

[0029] Figure 6 This is a cross-sectional view of the locking mechanism in a range hood according to the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of a range hood with the check mechanism separated from the fixed base according to the present invention;

[0031] Figure 8 This is a schematic diagram of the installation strip part in a range hood according to the present invention.

[0032] The symbols for the main components are explained below:

[0033] 1. Range hood body;

[0034] 2. Air vent base;

[0035] 21. Fixing base; 211. Card holder; 212. V-shaped deflector;

[0036] 22. Connecting cylinder; 221. Connecting ring;

[0037] 3. Locking mechanism;

[0038] 31. Locking strap; 311. Card slot;

[0039] 32. Fixed end; 321. Flexible retaining post;

[0040] 33. Extension strip;

[0041] 4. Check valve mechanism;

[0042] 41. Installation strip; 411. Clip;

[0043] 42. Fixed post; 421. Pull strap; 422. Pull rope;

[0044] 43. Rotating shaft; 44. Rotating valve plate. Detailed Implementation

[0045] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0046] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0047] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] like Figure 1 and Figure 2 As shown, the present invention provides a range hood, including a range hood body 1 and an air outlet seat 2 disposed at the upper air outlet of the range hood body 1 and connected to the flue pipe. The air outlet seat 2 includes a fixing seat 21 fixedly connected to the range hood body 1 by bolts and a connecting cylinder 22 disposed at the upper end of the fixing seat 21. The connecting cylinder 22 is a conical cylindrical structure with the upper opening smaller than the lower opening. A locking mechanism 3 is provided on the connecting cylinder 22 to fix the flue pipe.

[0050] The tapered cylindrical connecting cylinder 22 can accommodate exhaust pipes of different diameters. During connection, simply place the end of the exhaust pipe onto the connecting cylinder 22 and then fix the exhaust pipe using the locking mechanism 3. It is compatible with exhaust pipes of different sizes and does not require transition connections through adapter rings, reducers, or other additional accessories, making installation more convenient.

[0051] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the upper end of the fixing seat 21 is cylindrical and has an external thread, and the connecting sleeve 22 is threadedly connected to the upper end of the fixing seat 21.

[0052] The locking mechanism 3 includes a locking band 31, a fixed end 32, and an extension band 33. The locking band 31 is sleeved on the connecting cylinder 22. The fixed end 32 is fixedly installed on one end of the locking band 31. The other end of the locking band 31 is provided with several slots 311. The fixed end 32 is provided with elastic locking posts 321 that are adapted to the slots 311. The extension band 33 is fixedly installed on the side of the fixed end 32 away from the locking band 31.

[0053] A pressure pad is provided on the side of the locking band 31 near the connecting cylinder 22. Both the pressure pad and the extension band 33 are made of rubber. The rubber pressure pad and extension band 33 enhance the locking effect of the locking mechanism 3 and also protect the exhaust pipe to prevent it from being scratched and damaged.

[0054] Multiple connecting rings 221 are arranged in a stepped manner on the outer wall of the connecting cylinder 22. Each connecting ring 221 has an annular groove, which is adapted to the locking band 31. When the locking band 31 is tightened, the locking band 31 can press the exhaust pipe into the annular groove to enhance the locking effect and prevent the exhaust pipe from falling off and affecting its use.

[0055] The connecting cylinder 22 can be a one-piece thin-shell structure. In practical applications, the exhaust pipe and the connecting cylinder 22 can be compared. After determining the corresponding applicable connecting ring 221, the excess connecting ring 221 (connecting ring 221 with an excessively small diameter) can be removed along the annular groove above the applicable connecting ring 221. During construction, the excess connecting ring 221 can be removed by cutting, sawing, or other methods to reduce exhaust resistance. After removing the excess connecting ring 221, the exhaust pipe is then fixed to the applicable connecting ring 221 using the locking strap 31.

[0056] like Figure 7 and Figure 8 As shown, the fixed base 21 is provided with a check mechanism 4. The check mechanism 4 includes a mounting strip 41, two fixed posts 42 symmetrically fixed on the mounting strip 41, a rotating shaft 43 rotatably mounted between the two fixed posts 42, and two semi-circular rotating valve plates 44 rotatably mounted on the rotating shaft 43. A torsion spring is provided between the two rotating valve plates 44.

[0057] Two buckles 411 are fixedly installed at the lower end of the mounting strip 41. The two buckles 411 are located directly below the two fixing posts 42. Two brackets 211 that are compatible with the buckles 411 are fixedly installed on the inner wall of the fixing base 21.

[0058] Pull straps 421 are fixedly installed on both fixed posts 42. Two pull ropes 422 are fixedly connected to the inside of the pull straps 421. The ends of the two pull ropes 422 pass through the fixed posts 42, the mounting strip 41, and the buckle 411 and are connected to the two legs of the buckle 411. When the pull straps 421 are pulled upward, the pull ropes 422 can be pulled upward, thereby pulling the two legs of the buckle 411 to move towards each other, so that it is disengaged from the seat 211, which facilitates the disassembly of the anti-return mechanism 4.

[0059] A V-shaped guide plate 212 is fixedly installed inside the fixed base 21. The V-shaped guide plate 212 is located below the card base 211. The V-shaped guide plate 212 guides the airflow and can quickly disperse the airflow to the two rotating valve plates 44. When the range hood is working, the rotating valve plates 44 are quickly opened.

[0060] The mounting base 21, connecting cylinder 22 and V-shaped guide plate 212 are all made of aluminum alloy. Aluminum alloy is resistant to high temperature and can ensure the lightweight of the entire air outlet base 2. In addition, the inner wall of the mounting base 21 and connecting cylinder 22 and the surface of the V-shaped guide plate 212 are provided with an oleophobic layer, which can reduce the probability of oil stains adhering to the mounting base 21, connecting cylinder 22 and V-shaped guide plate 212.

[0061] The method of using this utility model is as follows:

[0062] In use, the end of the exhaust pipe is fitted onto the connecting cylinder 22, and the exhaust pipe is pushed down to move to the outside of the corresponding or suitable connecting ring 221. At this time, take the locking strap 31 and wrap it around the lower part of the exhaust pipe at the connection point with the connecting ring 221. Insert the end of the locking strap 31 into the fixed end 32. Control the fixed end 32 with one hand and pull the locking strap 31 with the other hand to tighten the locking strap 31. When the locking strap 31 is tightened to the maximum, the locking strap 31 fixes the exhaust pipe to the connecting ring 221.

[0063] When the range hood is working, airflow is generated in the fixed base 21. The V-shaped guide plate 212 guides the airflow, causing the airflow to carry the oil fumes and push the rotating valve plate 44. The rotating valve plate 44 opens, and the oil fumes are smoothly discharged from the fixed base 21 and the connecting cylinder 22 to the exhaust pipe. When the range hood stops working, the rotating valve plate 44 will close under the action of the torsion spring, which can prevent external air odors or oil fumes from flowing back in.

[0064] When it is necessary to clean the air outlet seat 2, the locking strap 31 can be cut to separate the exhaust pipe from the connecting tube 22, and then the connecting tube 22 and the check mechanism 4 can be separated from the fixed seat 21 in sequence.

[0065] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0068] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0069] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A range hood, comprising a range hood body (1) and an air outlet seat (2) disposed at the upper air outlet of the range hood body (1) and connectable to a flue pipe, characterized in that: The air outlet seat (2) includes a fixed seat (21) that is fixedly connected to the range hood body (1) by bolts and a connecting cylinder (22) set on the upper end of the fixed seat (21). The connecting cylinder (22) is a conical cylindrical structure with the upper end opening smaller than the lower end opening. The connecting cylinder (22) is provided with a locking mechanism (3) that can fix the smoke pipe. Multiple connecting rings (221) are set in a stepped manner on the outer wall of the connecting cylinder (22). Each of the multiple connecting rings (221) has an annular groove.

2. The range hood according to claim 1, characterized in that: The upper end of the fixed seat (21) is cylindrical and the upper end of the fixed seat (21) is provided with external threads. The connecting cylinder (22) is threadedly connected to the upper end of the fixed seat (21).

3. The range hood according to claim 1, characterized in that: The locking mechanism (3) includes a locking band (31), a fixed end (32), and an extension band (33). The locking band (31) is sleeved on the connecting cylinder (22). The fixed end (32) is fixedly installed on one end of the locking band (31). The other end of the locking band (31) is provided with a plurality of slots (311). The fixed end (32) is provided with elastic locking posts (321) that are adapted to the slots (311). The extension band (33) is fixedly installed on the side of the fixed end (32) away from the locking band (31).

4. The range hood according to claim 3, characterized in that: The locking band (31) has a pressing pad on the side near the connecting cylinder (22), and both the pressing pad and the extension band (33) are made of rubber.

5. The range hood according to claim 1, characterized in that: The fixed base (21) is provided with a check mechanism (4). The check mechanism (4) includes a mounting strip (41), two fixed columns (42) symmetrically fixed on the mounting strip (41), a rotating shaft (43) rotatably mounted between the two fixed columns (42), and two semi-circular rotating valve plates (44) rotatably mounted on the rotating shaft (43). A torsion spring is provided between the two rotating valve plates (44).

6. The range hood according to claim 5, characterized in that: The lower end of the mounting strip (41) is fixedly installed with two buckles (411), which are located directly below the two fixing posts (42). The inner wall of the fixing seat (21) is fixedly installed with two card seats (211) that are compatible with the buckles (411).

7. The range hood according to claim 6, characterized in that: Pull straps (421) are fixedly installed on both fixed posts (42). Two pull ropes (422) are fixedly connected to the inside of the pull straps (421). The ends of the two pull ropes (422) pass through the fixed posts (42), the mounting strip (41), and the buckle (411) and are connected to the two legs of the buckle (411).

8. The range hood according to claim 6, characterized in that: A V-shaped guide plate (212) is fixedly installed inside the fixed base (21), and the V-shaped guide plate (212) is located below the card holder (211).

9. The range hood according to claim 8, characterized in that: The fixed base (21), connecting cylinder (22) and V-shaped guide plate (212) are all made of aluminum alloy.

10. The range hood according to claim 8, characterized in that: The inner walls of the fixed base (21) and the connecting cylinder (22) and the surface of the V-shaped guide plate (212) are provided with an oleophobic layer.

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