Smoke exhaust pipe and range hood

Abstract

The utility model provides a smoke exhaust pipe and a range hood. The smoke exhaust pipe comprises at least three reel structures, and the ends of the at least three reel structures are sequentially connected to form a first annular structure. Each reel structure is provided with the corresponding sheet-shaped piece, and the sheet-shaped pieces can be rolled on the reel structures or unfolded from the reel structures; the edge sealing grooves extend in the axial direction of the smoke exhaust pipe, the adjacent edge parts are arranged in the same edge sealing groove, and when the sheet-shaped pieces are unfolded from the reel structure, the edge sealing grooves can enable the sealing parts of the adjacent sheet-shaped pieces to be bonded to form a first sealing structure. Thus, the smoke exhaust pipe can stretch by pulling the end, away from the reel structure, of the sheet-shaped piece, the smoke exhaust pipe can retract freely by rolling the reel structure, and the non-curled part of the sheet-shaped piece keeps stretching, so that the wall face of the smoke exhaust pipe is free of wrinkles, noise generated by the smoke exhaust pipe is reduced, and the smoke exhaust pipe is more attractive in appearance. Therefore, the noise of the whole range hood comprising the smoke exhaust pipe is reduced.

Description

Technical Field

[0001] The utility model relates to the field of kitchen appliances, in particular to a smoke exhaust pipe and a range hood. Background Art

[0002] In the prior art, the noise of the range hood will affect the user experience. Among them, the structure of the exhaust pipe has a greater impact on the noise. The main reason is that in order to achieve the effect of free expansion and contraction and to facilitate installation at different sites, the exhaust pipe often adopts a pleated structure. Due to the increased air flow resistance caused by the pleated wall structure, the impeller of the range hood needs a higher speed to achieve the target exhaust volume. The higher the impeller speed, the greater the noise; in addition, the pleated wall structure causes more wall pressure fluctuation impacts, which leads to more aerodynamic noise problems. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a smoke exhaust pipe and a range hood in order to overcome the defect in the prior art that a freely retractable smoke exhaust pipe is provided with a pleated wall structure, which causes relatively large noise.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A smoke exhaust pipe, comprising:

[0006] A scroll structure, wherein the scroll structures are at least three, and ends of the at least three scroll structures are sequentially connected to form a first ring structure;

[0007] A sheet-like member, each of the reel structures is provided with the sheet-like member, and the sheet-like member can be rolled up on the reel structure or unrolled from the reel structure;

[0008] A plurality of edge sealing grooves extend along the axial direction of the smoke exhaust pipe, and the edge of each sheet member adjacent to other sheet members is defined as an edge portion, and a sealing portion is provided on the edge portion. Adjacent edge portions are arranged in the same edge sealing groove. When the sheet member is unfolded from the reel structure, the edge sealing groove can enable the sealing portions of adjacent sheet members to bond to form a first sealing structure.

[0009] In the present technical solution, through the above structural setting, the sheet-like member can be stretched by pulling one end away from the reel structure, and the smoke exhaust pipe can be freely retracted by rolling the reel structure, and the uncurled part of the sheet-like member remains stretched, so that the wall surface of the smoke exhaust pipe has no wrinkles, thereby reducing noise.

[0010] Preferably, the width of the edge sealing groove gradually narrows along the direction away from the reel structure.

[0011] In the present technical solution, through the above structural arrangement, a relatively simple structure can be used so that when the sheet-like member is unfolded from the reel structure, the edge sealing groove can enable the sealing parts of adjacent sheet-like members to be bonded to form a first sealing structure.

[0012] Preferably, the smoke exhaust pipe further comprises a second annular structure and an edge sealing frame;

[0013] The second annular structure is sleeved on the outside of all the sheet-like members, and the shape of the second annular structure corresponds to that of the first annular structure;

[0014] The edge banding frame is located between two adjacent reel structures, and the edge banding frame connects the first annular structure and the second annular structure.

[0015] In the present technical solution, through the above structural setting, a relatively simple structure can be used to ensure that the portion of the sheet member close to the reel structure moves along the axial direction of the smoke exhaust pipe when the sheet member is pulled, thereby avoiding the problem of the edge portion falling out of the edge sealing groove due to distortion.

[0016] Preferably, the smoke exhaust pipe further comprises a third annular structure, the edge of the third annular structure is connected to the edge of one end of all the sheet-like members away from the reel structure, and the shape of the third annular structure corresponds to that of the first annular structure.

[0017] In the present technical solution, through the above structural arrangement, the portion of the sheet member away from the reel structure can be stabilized with a relatively simple structure, thereby avoiding the problem of the connected sealing parts being separated from each other due to distortion.

[0018] Preferably, the sheet member is made of aluminum foil.

[0019] In the present technical solution, the smoke exhaust pipe can be made light and easy to use through the above structural arrangement.

[0020] Preferably, the first annular structure includes six scroll structures.

[0021] In the present technical solution, the above structural arrangement can make the smoke exhaust pipe structure stable, and the cross section has no sharp angles, which facilitates the flow of smoke.

[0022] Preferably, the smoke exhaust pipe further comprises a second sealing structure, wherein the second sealing structure is sleeved on the outer sides of the reel structure and the sheet-like member, and the second sealing structure can seal the gap between adjacent edge portions.

[0023] In the present technical solution, the above structural arrangement can prevent smoke from flowing out from the gaps between adjacent edge portions close to the scroll structure.

[0024] Preferably, the scroll structure includes a torsion spring, and when the sheet-like member is subjected to a force away from the scroll structure, the scroll structure rolls toward a first direction, so that the torsion spring accumulates elastic energy;

[0025] When the sheet-like element is not subjected to a force moving away from the reel structure, the torsion spring releases elastic energy to allow the reel structure to roll toward a second direction.

[0026] In the present technical solution, through the above structural arrangement, when the sheet-like member is not subjected to a force away from the reel structure, the smoke exhaust pipe can automatically retract.

[0027] Preferably, the reel structure includes a central axis and a reel mounted on the central axis, at least three ends of the central axis are connected in sequence to form the first annular structure, the sheet-like member can be rolled up on the reel or unfolded from the reel, one end of the torsion spring is connected to the central axis, and the other end of the torsion spring is connected to the inside of the reel.

[0028] In the present technical solution, through the above structural arrangement, the smoke exhaust pipe can be automatically retracted with a relatively simple structure when the sheet member is not subjected to a force away from the reel structure.

[0029] A range hood comprises the smoke exhaust pipe as described in any one of the above items.

[0030] In the present technical solution, the overall noise of the range hood can be reduced through the above structural setting.

[0031] The positive and progressive effects of the utility model are:

[0032] The sheet-like piece can be stretched by pulling one end away from the scroll structure, and the exhaust pipe can be freely retracted by rolling the scroll structure, and the uncurled part of the sheet-like piece remains stretched, so that the wall of the exhaust pipe has no wrinkles, reducing the noise generated by the exhaust pipe and the overall noise of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0034] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model except the sealing structure.

[0035] Figure 3 It is a schematic diagram of the structure of an embodiment of the utility model excluding the sheet-shaped member.

[0036] Figure 4 It is a schematic diagram of the structure of an embodiment of the utility model except the third ring structure.

[0037] Figure 5The present invention is a schematic structural diagram of a torsion spring, a central shaft and a reel according to an embodiment of the present invention.

[0038] Figure 6 It is a schematic structural diagram of the edge sealing groove in the first direction of an embodiment of the utility model.

[0039] Figure 7 It is a schematic structural diagram of the edge sealing groove in the second direction of an embodiment of the utility model.

[0040] Description of reference numerals:

[0041] Middle axis 11

[0042] Reel 12

[0043] Torsion spring 13

[0044] Sheet 2

[0045] Edge 21

[0046] Edge banding groove 3

[0047] Second ring structure 4

[0048] Edge banding rack 5

[0049] Third ring structure 6

[0050] Second sealing structure 7 DETAILED DESCRIPTION

[0051] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0052] like Figure 1-Figure 7 As shown, this embodiment provides a smoke exhaust pipe, which includes:

[0053] The ends of the six scroll structures are connected in sequence to form a first ring structure.

[0054] A sheet member 2 is provided on each reel structure, and the sheet member 2 can be rolled up on the reel structure or unrolled from the reel structure.

[0055] Multiple edge sealing grooves 3 extend along the axial direction of the smoke exhaust pipe, and the edge of each sheet member 2 adjacent to other sheet members 2 is defined as an edge portion 21. A sealing portion (not shown in the figure) is provided on the edge portion 21. Adjacent edge portions 21 are arranged in the same edge sealing groove 3. When the sheet member 2 is unfolded from the reel structure, the edge sealing groove 3 can make the sealing portions of adjacent sheet members 2 bonded to form a first sealing structure.

[0056] In this way, the sheet member 2 can be stretched by pulling one end away from the reel structure, and the smoke exhaust pipe can be freely retracted by rolling the reel structure, and the uncurled part of the sheet member 2 remains stretched, so that the wall of the smoke exhaust pipe has no wrinkles, reducing noise.

[0057] In this embodiment, the first annular structure includes six scroll structures. In this way, the smoke exhaust pipe structure can be stable, and the cross section has no sharp angles, which is convenient for smoke flow. Of course, in other embodiments, the first annular structure can also include three or more scroll structures.

[0058] In this embodiment, the width of the edge sealing groove 3 gradually narrows in the direction away from the reel structure. In this way, when the sheet 2 is unrolled from the reel structure, the edge sealing groove 3 can make the sealing parts of adjacent sheet members 2 bonded to form a first sealing structure with a relatively simple structure. Of course, in other embodiments, the edge sealing groove 3 can also be set to other forms of structure, such as the width suddenly becomes smaller in the middle to produce a sudden squeeze on the sealing part to make the sealing part bonded.

[0059] In this embodiment, the sealing portion is formed by the adjacent hook surfaces and felt surfaces being bonded together; in other embodiments, the sealing portion may also be configured as other forms of self-adhesive structures.

[0060] In this embodiment, the smoke exhaust pipe further includes a second annular structure 4 and an edge-sealing frame 5. The second annular structure 4 is sleeved on the outside of all the sheet members 2, and the shape of the second annular structure 4 corresponds to that of the first annular structure. The edge-sealing frame 5 is located between two adjacent reel structures, and the edge-sealing frame 5 connects the first annular structure and the second annular structure 4.

[0061] In this way, a relatively simple structure can be used to ensure that the portion of the sheet member 2 close to the reel structure moves along the axial direction of the smoke exhaust pipe when the sheet member 2 is pulled, thereby avoiding the problem that the edge portion 21 is disengaged from the edge sealing groove 3 due to distortion.

[0062] In this embodiment, the smoke exhaust pipe further includes a third annular structure 6, the edge of which is connected to the edge of one end of all the sheet members 2 away from the reel structure, and the shape of the third annular structure 6 corresponds to the first annular structure. In this way, the portion of the sheet member 2 away from the reel structure can be stabilized with a relatively simple structure to avoid the problem of the connected sealing parts being separated from each other due to distortion.

[0063] In this embodiment, the material of the sheet member 2 is aluminum foil, so that the smoke exhaust pipe can be made light and easy to use.

[0064] In this embodiment, the smoke exhaust pipe further includes a second sealing structure 7, which is sleeved on the outer side of the scroll structure and the sheet member 2, and the second sealing structure 7 can seal the gap between adjacent edge portions 21. In this way, smoke can be prevented from flowing out of the gap between adjacent edge portions 21 close to the scroll structure.

[0065] In this embodiment, the second sealing structure 7 is composed of a sealing plate, which is disposed between the first annular structure and the second annular structure 4; in other embodiments, the second sealing structure may also adopt other structural forms, such as an annular integrally formed structure.

[0066] Please refer to Figure 4-Figure 5 In this embodiment, the scroll structure includes a torsion spring 13. When the sheet 2 is subjected to a force away from the scroll structure, the scroll structure rolls in a first direction, so that the torsion spring 13 accumulates elastic energy. When the sheet 2 is not subjected to a force away from the scroll structure, the torsion spring 13 releases elastic energy, so that the scroll structure rolls in a second direction. In this way, when the sheet 2 is not subjected to a force away from the scroll structure, the smoke exhaust pipe can automatically retract.

[0067] In this embodiment, the reel structure includes a central axis 11 and a reel 12 sleeved on the central axis 11, at least three ends of the central axis 11 are sequentially connected to form a first ring structure, the sheet 2 can be rolled on the reel 12 or unrolled from the reel 12, one end of the torsion spring 13 is connected to the central axis 11, and the other end of the torsion spring 13 is connected to the inside of the reel 12. In this way, the smoke exhaust pipe can automatically retract when the sheet 2 is not subjected to a force away from the reel structure with a relatively simple structure.

[0068] This embodiment also provides a range hood (not shown in the figure), which includes the smoke exhaust pipe. In this way, the overall noise of the range hood can be reduced.

[0069] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A smoke exhaust pipe, characterized in that: It includes: A scroll structure, wherein the scroll structures are at least three, and ends of the at least three scroll structures are sequentially connected to form a first ring structure; A sheet-like member, each of the reel structures is provided with the sheet-like member, and the sheet-like member can be rolled up on the reel structure or unrolled from the reel structure; A plurality of edge sealing grooves extend along the axial direction of the smoke exhaust pipe, and the edge of each sheet member adjacent to other sheet members is defined as an edge portion, and a sealing portion is provided on the edge portion. Adjacent edge portions are arranged in the same edge sealing groove. When the sheet member is unfolded from the reel structure, the edge sealing groove can enable the sealing portions of adjacent sheet members to bond to form a first sealing structure.

2. The smoke exhaust pipe according to claim 1, characterized in that: The width of the edge sealing groove gradually narrows in a direction away from the reel structure.

3. The smoke exhaust pipe according to claim 2, characterized in that: The smoke exhaust pipe also includes a second annular structure and an edge sealing frame; The second annular structure is sleeved on the outside of all the sheet-like members, and the shape of the second annular structure corresponds to that of the first annular structure; The edge banding frame is located between two adjacent reel structures, and the edge banding frame connects the first annular structure and the second annular structure.

4. The smoke exhaust pipe according to claim 1, characterized in that: The smoke exhaust pipe further comprises a third annular structure, the edge of which is connected to the edge of one end of all the sheet-like members away from the reel structure, and the shape of the third annular structure corresponds to that of the first annular structure.

5. The smoke exhaust pipe according to claim 1, characterized in that: The material of the sheet-like piece is aluminum foil.

6. The smoke exhaust pipe according to claim 1, characterized in that: The first annular structure includes six scroll structures.

7. The smoke exhaust pipe according to claim 1, characterized in that: The smoke exhaust pipe further comprises a second sealing structure, which is sleeved on the outer sides of the reel structure and the sheet-like member, and the second sealing structure can seal the gap between the adjacent edge portions.

8. The smoke exhaust pipe according to claim 1, characterized in that: The reel structure includes a torsion spring, and when the sheet-like member is subjected to a force away from the reel structure, the reel structure rolls toward a first direction, so that the torsion spring accumulates elastic energy; When the sheet-like element is not subjected to a force moving away from the reel structure, the torsion spring releases elastic energy to allow the reel structure to roll toward a second direction.

9. The smoke exhaust pipe according to claim 8, characterized in that: The reel structure includes a central axis and a reel mounted on the central axis, at least three ends of the central axis are connected in sequence to form the first annular structure, the sheet-like member can be rolled up on the reel or unfolded from the reel, one end of the torsion spring is connected to the central axis, and the other end of the torsion spring is connected to the inside of the reel.

10. A range hood, characterized in that: It comprises the smoke exhaust pipe as described in any one of claims 1-9.

Images