Oil smoke air pipe

Abstract

An oil smoke air pipe comprises a plurality of air pipe bodies connected in sequence, each air pipe body comprises an air pipe and flange assemblies connected to the two ends of the air pipe, and each air pipe comprises two pipeline pieces. One end of each pipeline piece is an inserting part, the other end of each pipeline piece is a detouring part, and the detouring part comprises a first detouring part and a second detouring part; the flange assembly comprises two transverse shafts and two vertical shafts, the transverse shafts and the vertical shafts are connected through connecting pieces, one side faces of the transverse shafts and one side faces of the vertical shafts are buckled into the air pipe, and connecting holes for flange connection are formed in the other side faces of the transverse shafts, the other side faces of the vertical shafts and the connecting pieces. The device body is formed by connecting a plurality of sections of air pipe flanges, each section of air pipe is composed of two L-shaped pipeline pieces, and therefore the device body is not an integral air pipe before being assembled, and transportation is convenient. The connecting position of the air pipe is in a multi-time roundabout shape, the air leakage condition can be effectively reduced, glue can be injected into the gap after the air pipe is installed, and therefore the air leakage condition is further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of fume ducts, specifically a fume duct. Background Technology

[0002] Kitchen exhaust ducts are pipe devices used to remove fumes and smoke generated during kitchen cooking. They are usually installed between the kitchen range hood and the outside or exhaust vent, and are responsible for effectively expelling fumes and smoke outdoors, preventing fumes from accumulating indoors, regulating indoor air quality, and ensuring environmental hygiene and safety. However, kitchen exhaust ducts have some difficult problems in practical applications: common ducts are molded in one piece, resulting in a large duct volume that is inconvenient to transport, while detachable ducts have the problem of air leakage. Therefore, there is a lack of a duct that can be detached for transport and also reduces air leakage. Utility Model Content

[0003] In view of the above, this utility model provides an oil fume duct to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a fume duct, comprising multiple duct bodies connected in sequence, each duct body including a duct and flange assemblies connected to both ends of the duct, each duct body including two "L"-shaped pipe pieces, the two pipe pieces being movably installed end to end to form a rectangular duct; one end of each pipe piece is an "L"-shaped insertion part, and the other end is a bend part for insertion of the insertion part, the bend part including a first bend part and a second bend part, the first bend part and the second bend part being integrally formed and forming an elastic part. This provides lateral elastic stress to the ductwork; the insertion part and the first bend part of one pipe segment on each section of the ductwork are inserted into the first bend part and the insertion part of another pipe segment; the flange assembly includes two "L"-shaped horizontal shafts and two "L"-shaped vertical shafts, which are connected by connecting pieces. One side of the horizontal shaft and one side of the vertical shaft are fastened into the ductwork, and the other side of the horizontal shaft, the other side of the vertical shaft, and the connecting piece are provided with connecting holes for flange connection; in use, every two pipe segments form a duct, and every two ducts are connected by a flange assembly.

[0005] Furthermore, when the insertion part of one pipe piece on the duct is inserted into the first bend on another pipe piece, a sealing cavity is formed that can be filled with sealant. After the sealant is injected into the sealing cavity, it is further sealed to prevent air leakage.

[0006] Furthermore, the connecting piece can be connected to the horizontal and vertical axes by welding, or it can be connected to the horizontal and vertical axes by other means.

[0007] Furthermore, a gasket is movably installed between the two flange assemblies. The gasket has a round hole corresponding to the threaded hole. Installing a gasket between the two sections of the air duct further reduces air leakage.

[0008] Furthermore, the air inlet and air outlet of the duct body are connected to the external pipeline via flanges.

[0009] The beneficial effects of this utility model are: the main body of the device is composed of multiple sections of air duct flanges connected together, and each section of air duct is composed of two "L" shaped pipe pieces. Therefore, it is not a whole air duct before assembly, which makes transportation more convenient; the air duct connection is in a multiple-rounded shape, which can effectively reduce air leakage, and after the air duct is installed, glue can be injected into the gaps to further reduce air leakage. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a structural schematic diagram of the flange assembly of this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of the bypass part and the insertion part of this utility model when they are engaged.

[0013] Figure 4 This is a schematic diagram of the structure of the bypass section and the insertion section of this utility model when they are separated.

[0014] exist Figures 1-4 In the middle, 1. Duct body; 101. Duct; 102. Duct piece; 103. Insertion part; 104. Detour part; 105. First detour part; 106. Second detour part; 107. Sealing cavity; 2. Flange assembly; 201. Horizontal axis; 202. Vertical axis; 203. Threaded hole; 204. Connecting piece; 3. Gasket; 301. Round hole. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and some embodiments.

[0016] exist Figures 1-4A type of kitchen exhaust duct includes multiple duct body sections 1 connected sequentially. Each duct body section 1 includes a duct 101 and flange assemblies 2 connected to both ends of the duct 101. Each duct 101 includes two L-shaped pipe pieces 102, which are movably installed end-to-end to form a rectangular duct 101. One end of each pipe piece 102 is an L-shaped insertion portion 103, and the other end is a meandering portion 104 for insertion of the insertion portion 103. The meandering portion 104 includes a first meandering portion 1. 05. The second bend section 106, with its multi-layered bend structure, effectively prevents air leakage. The first bend section 105 and the second bend section 106 are integrally formed, creating an elastic section to provide lateral elastic stress to the duct 101, providing buffering during actual installation and use to prevent damage to the pipe segments 102. The insertion portion 103 and the first bend section 105 of one pipe segment 102 on each section of the duct 101 are correspondingly inserted into the first bend section 105 and the insertion portion 103 of another pipe segment 102. Figure 1 As shown, pipe segment A 102 and pipe segment B 102 can form a duct 101. During assembly, the insertion part 103 on pipe segment A 102 is inserted into the first bend 105 on pipe segment B 102, and the insertion part 103 on pipe segment B 102 101 is inserted into the first bend 105 on pipe segment A 102, thus assembling a rectangular duct 101. The flange assembly 2 includes two "L"-shaped horizontal shafts 201 and two "L"-shaped vertical shafts 202. The horizontal shafts 201 and vertical shafts 202 are connected by a connecting piece 204. One side of the horizontal shaft 201 and one side of the vertical shaft 202 are fastened into the air duct 101. The other side of the horizontal shaft 201, the other side of the vertical shaft 202, and the connecting piece 204 are provided with connecting holes for flange connection. One side of the horizontal shaft 201 and one side of the vertical shaft 202 are fastened into the air duct 101 respectively, and the horizontal shaft 201 and the vertical shaft 202 are connected by the connecting piece 204. Finally, bolts and other components are passed through the threaded hole 203 and tightened to form a flange connection structure. In use, every two pipe pieces 102 form an air duct, and every two air ducts are connected by the flange assembly 2.

[0017] In this embodiment, when the insertion portion 103 of one pipe piece 102 on the air duct 101 is inserted into the first detour portion 105 on another pipe piece 102, a sealing cavity 107 is formed that can be filled with sealant. After the sealant is injected into the sealing cavity 107, the air duct 101 is further sealed to prevent air leakage.

[0018] In this embodiment, the connecting piece 204 is connected to the horizontal axis 201 and the vertical axis 202 by welding. Alternatively, the connecting piece 204 can be connected to the horizontal axis 201 and the vertical axis 202 by other means.

[0019] In this embodiment, a gasket 3 is movably installed between the two flange assemblies 2. The gasket 3 has a round hole 301 corresponding to the threaded hole 203. The gasket 3 is installed between the two sections of air duct 101 to further reduce air leakage.

[0020] In this embodiment, the air inlet and air outlet of the duct body 1 are connected to the external pipe through flanges, which facilitates the installation or disassembly of the duct 101.

[0021] In practical implementation, the present invention is used as follows: two pipe pieces 102 are fastened together, and the insertion part 103 is inserted into the meandering part 104 to form a rectangular air duct 101. Then, the caulking cavity 107 of the first meandering part 105 is filled with glue to further reduce air leakage. Subsequently, one side of the horizontal axis 201 and the vertical axis 202 are fastened into the air duct 101, and the horizontal axis 201 and the vertical axis 202 are connected by the connecting piece 204. Finally, the gasket 3 is placed between the two sections of air duct 101, and the air duct 101 is connected in sequence by bolts and other components passing through the threaded hole 203 and the round hole 301, finally forming a connected air duct body 1.

[0022] It is worth noting that in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] It will be apparent to those skilled in the art that this utility model patent is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model patent. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model patent is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be encompassed within this utility model patent. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A kitchen exhaust duct, comprising multiple duct body sections connected in sequence, characterized in that: Each duct section includes a duct and flange assemblies connected to both ends of the duct. Each duct section includes two "L"-shaped pipe pieces, which are movably installed end to end to form a rectangular duct. Each pipe segment has an "L"-shaped insertion part at one end and a meandering part at the other end for the insertion part to be inserted into. The meandering part includes a first meandering part and a second meandering part. The first meandering part and the second meandering part are integrally formed and form an elastic part to provide lateral elastic stress to the duct. The insertion part and the first meandering part of one pipe segment on each section of the duct are correspondingly inserted into the first meandering part and the insertion part on another pipe segment. The flange assembly includes two "L"-shaped horizontal shafts and two "L"-shaped vertical shafts. The horizontal and vertical shafts are connected by a connecting piece. One side of the horizontal shaft and one side of the vertical shaft are fastened into the air duct. The other side of the horizontal shaft, the other side of the vertical shaft, and the connecting piece are provided with connecting holes for flange connection. In use, every two pipe pieces form an air duct, and every two air ducts are connected by the flange assembly.

2. The fume duct according to claim 1, characterized in that: When the insertion part of one pipe segment on the air duct is inserted into the first bend of another pipe segment, a cavity for filling with sealant is formed.

3. The fume duct according to claim 1, characterized in that: The connecting piece is connected to the horizontal and vertical axes by welding.

4. The fume duct according to claim 1, characterized in that: A gasket is movably mounted between the two flange assemblies, and the gasket has a circular hole corresponding to the threaded hole.

5. The fume duct according to claim 1, characterized in that: The air inlet and air outlet of the duct body are connected to the external pipeline via flanges.

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