An exhaust duct of an internal circulation type range hood

Abstract

The application provides an exhaust duct of an internal circulation type range hood, and belongs to the technical field of range hood auxiliary component technology. The exhaust duct of the internal circulation type range hood comprises an exhaust duct body, two groups of mounting slots are arranged on the inner side wall of the exhaust duct body, the two groups of mounting slots are arranged in an up-down distribution mode with respect to the inner center position of the exhaust duct body, and the distance between adjacent two mounting slots is the same. The exhaust duct has great convenience in the installation and dismounting process, can prolong the service life of the exhaust duct, and can further purify the treated gas.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary components for range hoods, specifically an exhaust duct for an internal circulation range hood. Background Technology

[0002] Range hoods are appliances used in home kitchens to remove cooking fumes. In addition to fulfilling their functional purpose, they should also be integrated into the decor of modern kitchens. With the development of range hoods, they are no longer limited to simple tools for removing kitchen fumes, but have also gained more entertainment and practical functions.

[0003] The gas processed by the range hood is discharged through the exhaust duct. Due to the high temperature of the gas, traditional exhaust ducts are easily damaged during operation, greatly shortening their service life. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an exhaust duct for an internal circulation range hood, which solves the problem that the lifespan of many existing range hood exhaust ducts is shortened due to excessively high gas temperatures.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an exhaust duct for an internal circulation range hood, comprising an exhaust duct body, wherein two sets of mounting slots are provided on the inner sidewall of the exhaust duct body, the two sets of mounting slots being distributed vertically about the internal center of the exhaust duct body, the distance between two adjacent mounting slots being the same, a fixing seat being provided inside each of the mounting slots, the fixing seat being fixedly installed inside the mounting slot, a connecting shaft being hinged inside each of the fixing seats, the end of each connecting shaft away from the fixing seat extending to the outside of the mounting slot, a plurality of elastic telescopic rods being fixedly connected to the outer surface of the end of each connecting shaft away from the fixing seat, a connecting sleeve being slidably sleeved on the outer surface of the end of each connecting shaft away from the fixing seat, and a smoke-distributing plate being fixedly connected to the end of each connecting sleeve away from the connecting shaft.

[0008] Preferably, each of the plurality of connecting shafts has a connecting hole at one end near the fixed base.

[0009] Preferably, the inner sidewalls of the plurality of connecting sleeves are provided with locking grooves, and the shape of the plurality of locking grooves is arc-shaped.

[0010] Preferably, the shape of the plurality of smoke distribution plates is semi-circular, and their radius is the same as the radius of the cross-section of the smoke exhaust pipe body.

[0011] Preferably, the interior of the smoke separator is filled with an adsorbent material.

[0012] Preferably, the upper and lower side walls of the smoke separating plate are provided with multiple material passage holes.

[0013] Working Principle: During use, when the exhaust duct needs to be installed or disassembled, the smoke divider plates can be rotated so that the two symmetrical smoke divider plates about the middle position of the exhaust duct form a complete circle. Since the radius of the smoke divider plates is the same as the radius of the cross-sectional circle of the exhaust duct body, the two smoke divider plates forming a complete circle can support the flexible exhaust duct, which can greatly improve the convenience of installation or disassembly. During use, rotate the smoke divider plates so that they form a certain angle with the inner wall of the exhaust duct body. When high-temperature gas enters the interior of the exhaust duct body, it first collides with the inclined smoke divider plates, and then passes through the smoke divider plates and adsorption material before being transmitted forward. The high-temperature gas will move forward along the arrangement trend of the smoke divider plates, which can reduce excessive contact between the inner wall of the duct and the high-temperature gas, which can greatly improve its service life. At the same time, when the treated gas passes through the layers of smoke divider plates, it will be purified once each time it passes through, which can further ensure the cleanliness of the exhaust gas.

[0014] (III) Beneficial Effects

[0015] This invention provides an exhaust duct for an internal circulation range hood. It has the following beneficial effects:

[0016] 1. The exhaust duct of this internal circulation range hood can be rotated to form a complete circle when the exhaust duct needs to be installed or disassembled. Since the radius of the smoke distribution plate is the same as the radius of the cross-section circle of the exhaust duct body, the two smoke distribution plates forming a complete circle can support the flexible exhaust duct, which can greatly improve the convenience of installation or disassembly.

[0017] 2. In the operation of this internal circulation range hood's exhaust duct, the rotating smoke distribution plate forms a certain angle with the inner wall of the exhaust duct body. When high-temperature gas enters the interior of the exhaust duct body, it first collides with the inclined smoke distribution plate, and then passes through the smoke distribution plate and adsorption material before being transmitted forward. The high-temperature gas will move forward along the arrangement trend of the smoke distribution plate, which can reduce excessive contact between the inner wall of the duct and the high-temperature gas, and greatly improve its service life.

[0018] 3. In the exhaust duct of this internal circulation range hood, the treated gas is purified once each time it passes through the layers of smoke separators during use, which further ensures the cleanliness of the exhaust gas. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the fixing base of the present invention;

[0021] Figure 3 This is a schematic diagram showing the connection relationship between the elastic telescopic rod and the connecting shaft of the present invention;

[0022] Figure 4 This is a schematic diagram of the connecting sleeve of the present invention;

[0023] Figure 5 This is a top view of the smoke separator plate of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the smoke separator plate of the present invention.

[0025] The components include: 1. Exhaust duct body; 2. Smoke distribution plate; 3. Connecting sleeve; 4. Connecting shaft; 5. Fixing base; 6. Mounting slot; 7. Connecting hole; 8. Elastic telescopic rod; 9. Locking groove; 10. Material passage hole; and 11. Adsorbent material. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example:

[0028] like Figure 1-6 As shown, this embodiment of the invention provides an exhaust duct for an internal circulation range hood, including an exhaust duct body 1. Two sets of mounting slots 6 are provided on the inner sidewall of the exhaust duct body 1. The two sets of mounting slots 6 are distributed vertically about the internal center of the exhaust duct body 1, and the distance between adjacent mounting slots 6 is the same. Each mounting slot 6 has a fixing seat 5 inside, which is fixedly installed inside the mounting slot 6. Each fixing seat 5 has a connecting shaft 4 hinged inside it. The end of the connecting shaft 4 away from the fixing seat 5 extends to the outside of the mounting slot 6. Multiple elastic telescopic rods 8 are fixedly connected to the outer surface of the end of the connecting shaft 4 away from the fixing seat 5. A connecting sleeve 3 is slidably fitted onto the outer surface of the end of the connecting shaft 4 away from the fixing seat 5. A smoke-distributing plate 2 is fixedly connected to the end of the connecting sleeve 3 away from the connecting shaft 4.

[0029] Multiple connecting shafts 4 are provided with connecting holes 7 at one end near the fixed base 5; multiple connecting sleeves 3 are provided with locking grooves 9 on their inner side walls, and the shapes of multiple locking grooves 9 are all arc-shaped; multiple smoke distribution plates 2 are all semi-circular in shape, and their radii are the same as the radius of the cross-section circle of the smoke exhaust pipe body 1; the interior of the smoke distribution plate 2 is filled with adsorbent material 11; multiple material passage holes 10 are provided on the upper and lower side walls of the smoke distribution plate 2.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust duct for an internal circulation range hood, comprising an exhaust duct body (1), characterized in that: The inner wall of the exhaust duct body (1) is provided with two sets of mounting slots (6). The two sets of mounting slots (6) are distributed vertically about the internal center of the exhaust duct body (1). The distance between two adjacent mounting slots (6) is the same. Each of the mounting slots (6) is provided with a fixing seat (5). The fixing seat is fixedly installed inside the mounting slot (6). Each of the fixing seats (5) is hinged with a connecting shaft (4). The end of the connecting shaft (4) away from the fixing seat (5) extends to the outside of the mounting slot (6). Each of the connecting shafts (4) away from the fixing seat (5) has a plurality of elastic telescopic rods (8) fixedly connected to the outer surface of the end of the connecting shaft (4) away from the fixing seat (5). A connecting sleeve (3) is slidably fitted on the outer surface of the end of the multiple connecting shafts (4) away from the fixed seat (5). A smoke distribution plate (2) is fixedly connected to the end of the multiple connecting sleeves (3) away from the connecting shafts (4). The multiple smoke distribution plates (2) are all semi-circular in shape, and their radii are the same as the radius of the cross-sectional circle of the exhaust pipe body (1). When the exhaust pipe needs to be installed or disassembled, the smoke distribution plate (2) can be rotated so that the two smoke distribution plates (2) symmetrical about the middle position of the exhaust pipe form a complete circle. Since the radius of the smoke distribution plate (2) is the same as the radius of the cross-sectional circle of the exhaust pipe body (1), the two smoke distribution plates (2) forming a complete circle can support the flexible exhaust pipe.

2. The exhaust duct of an internal circulation range hood according to claim 1, characterized in that: Each of the plurality of connecting shafts (4) has a connecting hole (7) at one end near the fixed base (5).

3. The exhaust duct of an internal circulation range hood according to claim 1, characterized in that: The inner sidewalls of the multiple connecting sleeves (3) are provided with locking grooves (9), and the multiple locking grooves (9) are all arc-shaped.

4. The exhaust duct of an internal circulation range hood according to claim 1, characterized in that: The interior of the smoke distribution plate (2) is filled with adsorbent material (11).

5. The exhaust duct of an internal circulation range hood according to claim 1, characterized in that: The upper and lower side walls of the smoke distribution plate (2) are each provided with multiple material passage holes (10).

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