Range hood and sealing plate assembly

Abstract

The utility model discloses a smoke exhaust ventilator and a sealing plate assembly, and relates to the related technical field of smoke exhaust ventilators, the smoke exhaust ventilator comprises a sealing plate, the sealing cover plate is fixedly connected with an exhaust pipe, the exhaust pipe is internally provided with an anti-backflow mechanism, the anti-backflow mechanism comprises a fixing ring, the fixing ring is fixedly connected to the inner wall of the exhaust pipe; the fixing plate is fixedly connected to the inner wall of the exhaust pipe; the semicircular piece is matched with the groove; the semicircular piece is rotationally arranged in the exhaust pipe through the mounting assembly; and the elastic assembly is arranged on the fixing plate. The arrangement mode that the fixing ring, the fixing plate, the semi-circular piece, the installation assembly and the elastic assembly are matched is utilized, the semi-circular piece is extruded by wind power to be opened when the range hood works, the semi-circular piece automatically rebounds to seal the exhaust pipe again when the semi-circular piece is closed, and disassembly can be completed only by removing shielding of the elastic assembly to the installation assembly when disassembly is needed. Operation is easy and convenient, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to range hoods, and in particular to a range hood and a sealing plate assembly. Background Art

[0002] A range hood is a kitchen appliance that is mainly installed above the stove. It uses a motor to drive the fan to rotate at high speed, creating a negative pressure area, thereby sucking the fumes, heat and odors generated during the cooking process into the body. After being filtered by components such as the filter, the clean air is discharged to the outdoors or circulated indoors to keep the kitchen air fresh.

[0003] In order to prevent the backflow of oil smoke, existing range hoods generally install a check valve on the air outlet pipe. However, the sealing plate on the existing check valve, i.e. the valve plate, may not be able to fully seal after long-term use due to the adhesion of oil smoke or deformation caused by the opening and closing of the valve plate. Therefore, the valve plate needs to be replaced. However, the existing valve plate generally adopts an integrated design, which is inconvenient to disassemble. Utility Model Content

[0004] The purpose of the present invention is to provide a sealing plate assembly to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a sealing plate assembly, comprising a sealing plate, the outer wall of which is fixedly connected to a sealing cover plate, an exhaust pipe being fixedly connected to the sealing cover plate, and an anti-backflow mechanism being provided inside the exhaust pipe, the anti-backflow mechanism comprising:

[0006] A fixing ring fixedly connected to the inner wall of the exhaust pipe;

[0007] a fixing plate fixedly connected to the inner wall of the fixing ring;

[0008] A semicircular piece, with grooves formed on both sides of the fixing plate, and the semicircular piece and the grooves cooperate with each other;

[0009] An installation component, wherein the semicircular piece is rotatably arranged inside the exhaust pipe through the installation component;

[0010] The elastic component is arranged on the fixing plate and is used to limit the displacement of the semicircular piece.

[0011] Preferably, the installation assembly includes:

[0012] A rotating rod, wherein a through groove is formed inside the semicircular piece, and a rotating groove is symmetrically formed on the inner wall of the exhaust pipe, one end of the rotating rod is slidably connected to the inner cavity of the through groove, and the other end of the rotating rod is slidably connected to the inner cavity of the rotating groove;

[0013] A pull rod, wherein the outer wall of the semicircular piece is provided with a pull groove communicating with the through groove, the pull rod is located inside the pull groove, and the pull rod is fixedly connected to the rotating rod;

[0014] A first compression spring is located inside the through slot.

[0015] Preferably, both ends of the first compression spring are fixedly connected to the ends of the rotating rod respectively, and the outer wall of the pull rod is provided with anti-slip texture.

[0016] Preferably, the elastic component includes:

[0017] An extrusion plate, wherein an extrusion groove is provided inside the fixed plate, and the extrusion plate is slidably connected with the inner cavity of the extrusion groove;

[0018] A rotating plate, the rotating plate being rotatably arranged inside the extrusion plate;

[0019] A limiting plate is provided on the outside of the fixed plate and is used to limit the rotation of the semicircular piece;

[0020] A connecting rod, one end of which is fixedly connected to the rotating plate, and the other end of which is fixedly connected to the limiting plate;

[0021] A second compression spring is sleeved on the outside of the connecting rod.

[0022] Preferably, one end of the second compression spring is fixedly connected to the extrusion plate, and the other end of the second compression spring is fixedly connected to the inner wall of the extrusion groove.

[0023] Preferably, the elastic component further comprises:

[0024] A positioning rod, wherein positioning holes are equidistantly opened on the outer wall of the exhaust pipe, one end of the positioning rod is threadedly connected to the limiting plate, and the other end of the positioning rod is slidably connected to the inner cavity of the positioning hole.

[0025] Another object of the present invention is to provide a range hood comprising the above-mentioned sealing plate assembly.

[0026] The technical effects and advantages of this utility model are:

[0027] The utility model utilizes a setting mode that cooperates with a fixing ring, a fixing plate, a semicircular piece, a mounting assembly and an elastic assembly. The elastic assembly can not only apply elastic extrusion to multiple semicircular pieces, making it convenient for the semicircular pieces to be squeezed open by wind when the range hood is working, and automatically rebound to close the exhaust pipe again when closed, but also can shield the mounting assembly, making the installation of the semicircular piece more stable. At the same time, when disassembly is required, it is only necessary to remove the shielding of the mounting assembly by the elastic assembly to complete the disassembly. The operation is simple and convenient, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0029] Figure 2 This is a schematic diagram of the internal structure of the exhaust pipe of the utility model when viewed from above.

[0030] Figure 3 This is a schematic diagram of the internal structure of the exhaust pipe of the utility model.

[0031] Figure 4 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0032] Figure 5 For this utility model Figure 2 Enlarged structural diagram at point B in the middle.

[0033] In the figure: 1. Sealing plate; 2. Sealing cover plate; 3. Exhaust duct; 4. Fixing ring; 5. Fixing plate; 6. Semicircular piece; 7. Mounting assembly; 71. Rotating rod; 72. Pull rod; 73. First compression spring; 8. Elastic assembly; 81. Extrusion plate; 82. Rotating plate; 83. Limiting plate; 84. Connecting rod; 85. Second compression spring; 86. Positioning rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] The utility model provides Figure 1-5The sealing plate assembly shown in the figure includes a sealing plate 1, the outer wall of the sealing plate 1 is fixedly connected to a sealing cover plate 2, the sealing cover plate 2 is fixedly connected to an exhaust pipe 3, and the exhaust pipe 3 is provided with an anti-backflow mechanism inside the exhaust pipe. The anti-backflow mechanism includes a fixing ring 4, a fixing plate 5, a semicircular piece 6, a mounting assembly 7 and an elastic assembly 8. The fixing ring 4 is fixedly connected to the inner wall of the exhaust pipe 3, and the fixing ring 4 limits the semicircular piece 6, so that the semicircular piece 6 can close the exhaust pipe 3; the fixing plate 5 is fixedly connected to the inner wall of the fixing ring 4; both sides of the fixing plate 5 are provided with grooves, and the semicircular piece 6 and the grooves are connected Cooperate with each other; the semicircular piece 6 is rotatably arranged inside the exhaust pipe 3 through the installation component 7; the elastic component 8 is arranged on the fixed plate 5, which is used to limit the displacement of the semicircular piece 6. The elastic component 8 can not only apply elastic extrusion to multiple semicircular pieces 6, but also facilitate the semicircular piece 6 to be squeezed open by wind when the range hood is working, and automatically rebound to close the exhaust pipe 3 again when closed, and it can also block the installation component 7, so that the installation of the semicircular piece 6 is more stable. At the same time, when disassembly is required, it is only necessary to remove the elastic component 8 from the installation component 7 to complete the disassembly. The operation is simple and convenient, and it is easy to use.

[0036] Furthermore, the mounting assembly 7 includes a rotating rod 71, a pull rod 72 and a first compression spring 73. A through groove is provided inside the semicircular piece 6, and a rotating groove is symmetrically provided on the inner wall of the exhaust pipe 3. One end of the rotating rod 71 is slidably inserted and connected with the inner cavity of the through groove, and the other end of the rotating rod 71 is slidably inserted and connected with the inner cavity of the rotating groove; the outer wall of the semicircular piece 6 is provided with a pulling groove communicating with the through groove, and the pulling rod 72 is located inside the pulling groove, and the pulling rod 72 is fixedly connected to the rotating rod 71; the first compression spring 73 is located inside the through groove, and the first compression spring The two ends of the compression spring 73 are fixedly connected to the ends of the rotating rod 71 respectively, and the outer wall of the pull rod 72 is provided with an anti-slip texture. The first compression spring 73 is always in a compressed state, thereby providing a stable elastic force to the rotating rod 71, so that the rotating rod 71 can be stably inserted into the rotating groove, so that the semicircular piece 6 can be rotated inside the exhaust pipe 3 through the rotating rod 71, and at the same time, the rotating rod 71 can be pulled out of the rotating groove by the pull rod 72, thereby realizing the disassembly of the semicircular piece 6.

[0037] Furthermore, the elastic component 8 includes an extrusion plate 81, a rotating plate 82, a limiting plate 83, a connecting rod 84, a second compression spring 85 and a positioning rod 86. An extrusion groove is provided inside the fixed plate 5, and the extrusion plate 81 is slidably connected to the inner cavity of the extrusion groove; the rotating plate 82 is rotatably arranged inside the extrusion plate 81; the limiting plate 83 is arranged outside the fixed plate 5 to limit the rotation of the semicircular piece 6; one end of the connecting rod 84 is fixedly connected to the rotating plate 82, and the other end of the connecting rod 84 is fixedly connected to the limiting plate 83; the second compression spring 85 is sleeved on the outside of the connecting rod 84, and the second compression spring 85 is sleeved on the outside of the connecting rod 84. One end of the second compression spring 85 is fixedly connected to the extrusion plate 81, and the other end of the second compression spring 85 is fixedly connected to the inner wall of the extrusion groove. The second compression spring 85 is always in a compressed state, thereby stably providing an elastic force to the connecting rod 84 on the extrusion plate 81, so that the limiting plate 83 can be close to the outer wall of the fixing plate 5, and can squeeze the multiple semicircular pieces 6, so that the semicircular pieces 6 can cooperate with the fixing ring 4 to close the exhaust pipe 3 when the range hood is not working to prevent the backflow of oil smoke. When the range hood is working, the semicircular pieces 6 can be squeezed open by the wind discharged by the internal fan to discharge the oil smoke.

[0038] Furthermore, positioning holes are equidistantly provided on the outer wall of the exhaust duct 3, and one end of the positioning rod 86 is threadedly connected to the limiting plate 83, and the other end of the positioning rod 86 is slidably connected to the inner cavity of the positioning hole. The positioning rod 86 plays a limiting role on the limiting plate 83, so that the limiting plate 83 and the fixing plate 5 are in an overlapping state. At this time, the limiting plate 83 can provide pressure to the semicircular piece 6, and when the limiting plate 83 is squeezed and displaced by the semicircular piece 6, the positioning rod 86 will not disengage from the positioning hole. When the semicircular piece 6 needs to be disassembled, the positioning rod 86 can be twisted to make the positioning rod 86 unscrewed partially. At this time, the limiting plate 83 can be pulled and rotated 90° so that the limiting plate 83 and the fixing plate 5 are in a vertically staggered state. At this time, the pull rod 72 is exposed, and the semicircular piece 6 can be quickly disassembled.

[0039] This embodiment provides a range hood, which includes the above-mentioned sealing plate assembly.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing plate assembly, comprising a sealing plate (1), characterized in that: The outer wall of the sealing plate (1) is fixedly connected to a sealing cover plate (2), an exhaust pipe (3) is fixedly connected to the sealing cover plate (2), and an anti-backflow mechanism is provided inside the exhaust pipe (3), the anti-backflow mechanism comprising: A fixing ring (4), the fixing ring (4) being fixedly connected to the inner wall of the exhaust pipe (3); A fixing plate (5), the fixing plate (5) being fixedly connected to the inner wall of the fixing ring (4); A semicircular piece (6), grooves are provided on both sides of the fixing plate (5), and the semicircular piece (6) and the grooves cooperate with each other; A mounting assembly (7), wherein the semicircular piece (6) is rotatably arranged inside the exhaust pipe (3) through the mounting assembly (7); An elastic component (8) is provided on the fixing plate (5) and is used to limit the displacement of the semicircular piece (6).

2. A sealing plate assembly according to claim 1, characterized in that: The installation component (7) includes: A rotating rod (71), a through groove is provided inside the semicircular piece (6), a rotating groove is symmetrically provided on the inner wall of the exhaust pipe (3), one end of the rotating rod (71) is connected to the inner cavity of the through groove by sliding insertion, and the other end of the rotating rod (71) is connected to the inner cavity of the rotating groove by sliding insertion; A pull rod (72), wherein the outer wall of the semicircular piece (6) is provided with a pull groove communicating with the through groove, the pull rod (72) is located inside the pull groove, and the pull rod (72) is fixedly connected to the rotating rod (71); A first compression spring (73), wherein the first compression spring (73) is located inside the through slot.

3. A sealing plate assembly according to claim 2, characterized in that: Both ends of the first compression spring (73) are fixedly connected to the end of the rotating rod (71), and the outer wall of the pull rod (72) is provided with an anti-slip texture.

4. A sealing plate assembly according to claim 1, characterized in that: The elastic component (8) comprises: An extrusion plate (81), wherein an extrusion groove is provided inside the fixing plate (5), and the extrusion plate (81) is slidably connected to the inner cavity of the extrusion groove; a rotating plate (82), the rotating plate (82) being rotatably disposed inside the extrusion plate (81); A limiting plate (83), the limiting plate (83) being arranged outside the fixing plate (5) and used for limiting the rotation of the semicircular piece (6); A connecting rod (84), one end of the connecting rod (84) is fixedly connected to the rotating plate (82), and the other end of the connecting rod (84) is fixedly connected to the limiting plate (83); A second compression spring (85), the second compression spring (85) is sleeved on the outside of the connecting rod (84).

5. A sealing plate assembly according to claim 4, characterized in that: One end of the second compression spring (85) is fixedly connected to the extrusion plate (81), and the other end of the second compression spring (85) is fixedly connected to the inner wall of the extrusion groove.

6. A sealing plate assembly according to claim 4, characterized in that: The elastic component (8) further comprises: A positioning rod (86) is provided with positioning holes at equal intervals on the outer wall of the exhaust pipe (3), one end of the positioning rod (86) is threadedly connected to the limiting plate (83), and the other end of the positioning rod (86) is slidably connected to the inner cavity of the positioning hole.

7. A range hood, characterized in that: The range hood comprises the sealing plate assembly according to any one of claims 1 to 6.

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