CN111156563A - Air pipe and range hood - Google Patents

Abstract

The invention provides an air pipe and a range hood, and relates to the technical field of kitchen appliances. The air pipe comprises a main pipe body, the main pipe body comprises an inner sleeve and an outer sleeve sleeved outside the inner sleeve, a sealed air containing cavity is formed between the inner sleeve and the outer sleeve, and an air charging and discharging assembly is arranged on the inner sleeve or the outer sleeve; when the air containing cavity is in an air release state, the main pipe body can be wound. The range hood comprises a range hood body and the air pipe, wherein the air inlet end of the main pipe body of the air pipe is communicated with the air outlet of the range hood body. The air pipe is provided with two layers of pipe bodies, namely an inner sleeve pipe and an outer sleeve pipe, and when the air pipe is used, air can be filled into an air containing cavity between the two layers of pipe bodies, so that the air pipe can keep the shape of the air pipe when the air pipe conveys air; when the air pipe is not required to be used, the air in the air containing cavity can be discharged, and the outer sleeve and the inner sleeve are wound, so that the space occupied by the air pipe is reduced, and the air pipe is convenient to package or transport.

Description

Air pipe and range hood

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to an air pipe and a range hood.

Background

The making process of the Chinese traditional food culture comprises frying, stir-frying, baking and the like, a large amount of oil smoke is generated in the process of making food, the oil smoke not only seriously pollutes the environment of a kitchen, but also causes great harm to the body and serious harm to the body of a kitchen operator in the oil smoke environment for a long time, even can suffer from cancers, and therefore, the range hood is widely applied to the kitchen.

The existing range hood is generally installed in a kitchen, the range hood is communicated with a common flue through an air pipe, and oil smoke gas sucked by the range hood is exhausted into the common flue through the air pipe; the existing air pipe is generally made of rigid materials, and the length of the air pipe is long, so that the range hood is large in packaging volume and high in difficulty in the transportation process.

Disclosure of Invention

The invention aims to provide an air pipe and a range hood so as to solve the technical problems that the air pipe is generally made of rigid materials, the range hood is large in packaging volume and high in difficulty in the transportation process due to the fact that the length of the air pipe is long in the prior art.

The embodiment provides an air pipe which comprises a main pipe body, wherein the main pipe body comprises an inner sleeve and an outer sleeve sleeved outside the inner sleeve, a sealed air accommodating cavity is formed between the inner sleeve and the outer sleeve, and an air charging and discharging assembly is arranged on the inner sleeve or the outer sleeve; when the air containing cavity is in an air release state, the main pipe body can be wound.

In an alternative embodiment, the inner sleeve is integrally formed with the outer sleeve; or the two ends of the outer sleeve are in one-to-one corresponding sealing connection with the two ends of the inner sleeve.

In an optional embodiment, two ends of the outer sleeve are provided with outer connecting sections, the inner diameter of each outer connecting section is consistent with the outer diameter of the inner sleeve at the corresponding position, and the outer connecting sections are in sealing connection with the inner sleeve;

or, the two ends of the inner sleeve are both provided with inner connecting sections, the outer diameter of each inner connecting section is consistent with the inner diameter of the outer sleeve at the corresponding position, and the inner connecting sections are connected with the outer sleeve in a sealing manner.

In an alternative embodiment, the inner wall of the inner sleeve transitions smoothly.

In an alternative embodiment, the inner sleeve is made of an oleophobic material.

In an alternative embodiment, the inner tube wall of the inner sleeve is coated with an oil-repellent layer.

In an alternative embodiment, the air inlet end of the main pipe body is communicated with an air inlet joint; and/or the air outlet end of the main pipe body is communicated with an air outlet joint.

In an optional embodiment, the air duct further comprises an air inlet connector, the air inlet end of the inner sleeve extends out of the outer sleeve along the axial direction of the inner sleeve to form an inner air inlet insertion section, and the air inlet connector is inserted into the inner air inlet insertion section and is connected with the inner air inlet insertion section in a sealing manner;

and/or the air pipe further comprises an air outlet connector, the air outlet end of the inner sleeve extends out of the outer sleeve along the axial direction of the inner sleeve to form an inner air outlet insertion section, and the air outlet connector is inserted into the inner air outlet insertion section and is in sealing connection with the inner air outlet insertion section.

In an optional implementation mode, the inflation and deflation assembly comprises an inflation nozzle and a cap capable of plugging the inflation nozzle, the inflation nozzle is arranged on the outer wall of the outer sleeve, and a connecting belt is connected between the cap and the inflation nozzle.

The embodiment also provides a range hood, which comprises a range hood body and the air pipe, wherein the air inlet end of the main pipe body of the air pipe is communicated with the air outlet of the range hood body.

The beneficial effects of the air pipe and the range hood of the invention comprise:

the invention provides an air pipe and a range hood, wherein the air pipe comprises a main pipe body used for conveying gas, and the main pipe body comprises an inner sleeve and an outer sleeve which are sleeved with each other; wherein, the lampblack absorber is used for carrying out the cigarette machine body of suction and the above-mentioned tuber pipe that is used for carrying the oil smoke of cigarette machine body suction to the assigned position including being used for to kitchen oil smoke, and the inlet end of tuber pipe communicates with the gas outlet of cigarette machine body.

Firstly, after the air pipe is processed, the air in the air containing cavity of the main pipe body can be discharged, and the main pipe body is wound to be in a smaller volume form, so that the space occupied by the air pipe is greatly reduced, and the range hood is correspondingly convenient to package and transport.

When the smoke exhaust ventilator is used, the smoke exhaust ventilator body of the smoke exhaust ventilator is arranged in a kitchen, the air inlet end of the air pipe is communicated with the air outlet of the smoke exhaust ventilator body, and air is filled into the air accommodating cavity of the main pipe body through the air filling and discharging assembly until the air in the air accommodating cavity can prop up the outer sleeve pipe and the inner sleeve pipe, so that the shape of the main pipe body during air conveying is kept; the air outlet end of the air pipe is communicated with the air inlet of the common flue (the common flue is taken as an example for illustration, except that the air outlet end of the air pipe can also be directly communicated with the external space or other designated areas). The smoke machine body pumps oil smoke gas generated by cooking in a kitchen into the smoke machine body, the oil smoke gas is input into the inner sleeve of the air pipe through the air outlet of the smoke machine body, and then the oil smoke gas is discharged into the common flue through the air outlet end of the inner sleeve.

When the range hood needs to be placed or transported, the gas in the gas containing cavity formed between the inner sleeve and the outer sleeve can be discharged through the gas charging and discharging assembly, the inner sleeve is attached to the outer sleeve, and the inner sleeve is wound to be in a small-size form.

The air pipe is provided with two layers of pipe bodies, namely an inner sleeve pipe and an outer sleeve pipe, and when the air pipe is used, air can be filled into an air containing cavity between the two layers of pipe bodies, so that the air pipe can keep the shape of the air pipe when the air pipe conveys air; when the air pipe is not required to be used, the air in the air containing cavity can be discharged, and the outer sleeve and the inner sleeve are wound, so that the space occupied by the air pipe is reduced, and the air pipe is convenient to package or transport.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of an air duct in an embodiment of the present invention, the air duct being a straight tube, and the air containing cavity being in an inflated state;

FIG. 2 is a schematic view of an exploded structure of the duct of FIG. 1;

FIG. 3 is a schematic partial cross-sectional view of the primary pipe body of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3;

fig. 5 is a schematic structural view of the air duct provided in the embodiment of the present invention being a bent pipe and the air accommodating chamber being in an inflated state;

fig. 6 is a schematic view of the air-containing cavity in the air duct in the deflated state and the main duct in the wound state according to the embodiment of the present invention.

Icon: 100-a main tubular body; 110-inner cannula; 111-inner air inlet plug section; 112-inner air outlet splicing section; 120-outer sleeve; 121-an outer inlet connection section; 122-gas out connection section; 130-a gas containing cavity; 200-an air inflation and deflation assembly; 210-a gas charging nozzle; 220-a cap; 230-a connecting band; 300-an air inlet joint; 400-air outlet joint.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally laid out when products of the present invention are used, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present embodiment provides an air duct, as shown in fig. 2 and fig. 3, including a main duct body 100, the main duct body 100 includes an inner tube 110 and an outer tube 120 sleeved outside the inner tube 110, a sealed air accommodating cavity 130 is formed between the inner tube 110 and the outer tube 120, and an inflation/deflation assembly 200 is disposed on the inner tube 110 or the outer tube 120; when the air-containing chamber 130 is in the air-release state, the main pipe body 100 can be wound.

The embodiment also provides a range hood, which comprises a range hood body and the air pipe, wherein the air inlet end of the main pipe body 100 of the air pipe is communicated with the air outlet of the range hood body.

In the air duct and the range hood provided in this embodiment, the air duct includes a main duct body 100 for conveying air, and the main duct body 100 includes an inner sleeve 110 and an outer sleeve 120 that are sleeved with each other; wherein, the lampblack absorber is used for carrying out the cigarette machine body of suction and the above-mentioned tuber pipe that is used for carrying the oil smoke of cigarette machine body suction to the assigned position including being used for to kitchen oil smoke, and the inlet end of tuber pipe communicates with the gas outlet of cigarette machine body.

Firstly, after the air duct is processed, the air in the air containing cavity 130 of the main duct body 100 can be exhausted, as shown in fig. 6, the main duct body 100 is wound in a smaller volume form, so as to greatly reduce the space occupied by the air duct, and accordingly, the range hood is convenient to package and transport.

When the smoke exhaust ventilator is used, the smoke exhaust ventilator body of the smoke exhaust ventilator is arranged in a kitchen, the air inlet end of the air pipe is communicated with the air outlet of the smoke exhaust ventilator body, air is filled into the air containing cavity 130 of the main tube body 100 through the air filling and discharging assembly 200 until the air in the air containing cavity 130 can support the outer sleeve 120 and the inner sleeve 110, so that the shape of the main tube body 100 during air conveying is kept; the air outlet end of the air pipe is communicated with the air inlet of the common flue (the common flue is taken as an example for illustration, except that the air outlet end of the air pipe can also be directly communicated with the external space or other designated areas). The smoke machine body pumps the oil smoke gas generated by cooking in a kitchen into the smoke machine body, the oil smoke gas is input into the inner sleeve 110 of the air pipe through the air outlet of the smoke machine body, and then the oil smoke gas is discharged into the common flue through the air outlet end of the inner sleeve 110.

When the range hood needs to be placed or transported, the air in the air containing cavity 130 formed between the inner sleeve 110 and the outer sleeve 120 can be discharged through the air charging and discharging assembly 200, and the inner sleeve 110 is attached to the outer sleeve 120 and wound to be in a smaller-size form.

The air pipe is provided with two layers of pipe bodies, namely an inner sleeve pipe 110 and an outer sleeve pipe 120, and when the air pipe is used, the air containing cavity 130 between the two layers of pipe bodies can be inflated, so that the air pipe can keep the shape of the air pipe when the air pipe conveys air; when the air pipe is not used, the air in the air containing cavity 130 can be discharged, and the outer sleeve 120 and the inner sleeve 110 can be wound, so that the space occupied by the air pipe is reduced, and the air pipe is convenient to package or transport.

Alternatively, in this embodiment, the inner sleeve 110 and the outer sleeve 120 may be integrally formed. Interior sleeve pipe 110 and outer tube 120 make through integrated into one piece's technology, the main pipe body 100 seamless connection who obtains, thereby improve the leakproofness and the fastness to connect that interior sleeve pipe 110 and outer tube 120 are connected, correspondingly improve the leakproofness of holding gas chamber 130, reduce the tuber pipe in the use, the junction of outer tube 120 and interior sleeve pipe 110 is outwards run out the gas, lead to holding the shape that gas chamber 130 gas reduces unable inflation support inner sleeve pipe 110 and outer tube 120, make main pipe body 100 take place to buckle, influence the emergence of tuber pipe gas transmission condition.

Specifically, the radial cross section of the main tube 100 may be circular, square or other shapes, and the radial cross sections of the inner sleeve 110 and the outer sleeve 120 may be the same or different; as shown in fig. 1, the main pipe may be a straight pipe, and as shown in fig. 5, the main pipe may also be an elbow pipe.

In addition to the above-mentioned form, in the present embodiment, the two ends of the outer sleeve 120 and the two ends of the inner sleeve 110 can be correspondingly and hermetically connected. In this form, the inner sleeve 110 and the outer sleeve 120 are two independent tubes, respectively, and when connecting, the outer sleeve 120 is sleeved outside the inner sleeve 110, and then two ends of the outer sleeve 120 are correspondingly and hermetically connected with two ends of the inner sleeve 110; wherein, the outer diameter of the outer sleeve 120 is larger than the inner diameter of the inner sleeve 110, and a gas containing cavity 130 is formed between the two.

Optionally, in this embodiment, an outer connecting section may be disposed at both ends of the outer sleeve 120, an inner diameter of the outer connecting section is consistent with an outer diameter of the inner sleeve 110 at a corresponding position, and the outer connecting section is connected with the inner sleeve 110 through sealing. Referring to fig. 2, the inner sleeve 110 may be a tube body with an equal diameter, the inner diameter of the outer sleeve 120 is larger than that of the inner sleeve 110, an air inlet end of the outer sleeve 120 is turned inwards or reduced to form an outer air inlet connection section 121, an air outlet end of the outer sleeve 120 is also turned inwards or reduced to form an outer air outlet connection section 122, when the outer sleeve 120 is sleeved outside the inner sleeve 110, the annular outer air inlet connection section 121 is approximately equal to the outer diameter of the inner sleeve 110 at a corresponding position, the inner wall of the outer air inlet connection section 121 can be completely attached to the outer wall of the inner sleeve 110, and then the outer sleeve 110 and the outer air inlet connection section are hermetically connected through thermoplastic or adhesive and; similarly, the gas outlet connecting section 122 of the outer sleeve 120 is connected with the tube body of the gas outlet end of the inner sleeve 110 in a sealing manner, so as to realize the sealing connection between the outer sleeve 120 and the inner sleeve 110. The arrangement of the outer connecting section can improve the fitting degree of the joint of the outer sleeve 120 and the inner sleeve 110, and reduce the occurrence of the situation that air leakage easily occurs in folds at the joint of the outer sleeve 120 and the inner sleeve 110, so that the sealing performance of the air containing cavity 130 is improved, the expansion support of the inner sleeve 110 and the outer sleeve 120 by the air in the air containing cavity 130 in the use process is ensured, and the normal use of the air pipe is ensured.

It should be noted that, in addition to the outer connection sections provided at both ends of the outer sleeve 120, the outer air inlet connection section 121 may be provided only at the air inlet end of the outer sleeve 120, or the outer air outlet connection section 122 may be provided only at the air outlet end of the outer sleeve 120.

Similarly, in this embodiment, an inner connecting section may be disposed at both ends or one end of the inner sleeve 110, the outer diameter of the inner connecting section is consistent with the inner diameter of the outer sleeve 120 at the corresponding position, and the inner connecting section is connected with the outer sleeve 120. The arrangement of the inner connecting section can improve the fitting degree of the joint of the inner sleeve 110 and the outer sleeve 120 and improve the sealing property of the gas containing cavity 130.

Specifically, the outer sleeve 120 and the inner sleeve 110 may be connected in a sealing manner by thermoplastic or adhesive.

In this embodiment, a smooth transition of the inner wall of the inner sleeve 110 may be provided. When in use, the gas in the gas containing cavity 130 expands, so that the inner sleeve 110 and the outer sleeve 120 keep the shapes thereof during gas transmission, and the inner channel of the inner sleeve 110 forms a channel through which the oil smoke gas flows; compared with the existing corrugated air pipe, the inner wall of the inner sleeve 110 is a smooth transition wall surface, so that the air resistance of oil smoke gas flowing through the air pipe can be greatly reduced, the loss of the actual air quantity of the range hood is correspondingly reduced, and the smoking effect of the range hood is improved. Specifically, through tests, the air loss of the air pipe with the smooth inner wall is 2-3 m3/min less than that of the corrugated air pipe, and the air loss is obviously reduced.

Specifically, in this embodiment, the inner sleeve 110 may be made of an oleophobic material. Contain the oil smoke granule in the oil smoke gas, the inside in-process of oil smoke gas flow through interior sleeve pipe 110, the oil smoke granule can collide and the adhesion forms the greasy dirt on it with the inside pipe wall of sleeve pipe 110, and the interior sleeve pipe 110 of this application adopts oleophobic material to make, can improve the degree of difficulty of oil smoke granule adhesion on it to reduce the formation of greasy dirt on the inside pipe wall of interior sleeve pipe 110, the corresponding smoothness of the inside pipe wall of ensureing interior sleeve pipe 110 ensures its lower windage. Specifically, the inner sleeve 110 may be made of polyurethane polymer material or nylon material.

Alternatively, in this embodiment, the inner wall of the inner sleeve 110 may be coated with an oil-repellent layer. On one hand, the oil-repellent layer can reduce the formation of oil stains on the inner wall of the inner sleeve 110, thereby ensuring the smoothness of the inner wall of the pipe, reducing the wind resistance of the pipe and ensuring the smoking effect of the range hood; on the other hand, the arrangement of the oleophobic layer can enhance the sealing performance of the tube wall of the inner sleeve 110, and reduce the occurrence of air leakage of the air accommodating cavity 130 caused by the ventilation of the tube wall.

In this embodiment, as shown in fig. 1, an intake joint 300 may be communicated with the intake end of the main pipe 100. The air inlet connector 300 is used for being communicated with an air outlet of a cigarette machine body, the air inlet connector 300 is a part with a fixed shape, and compared with the main pipe body 100 capable of being wound and deformed, the convenience of connecting the air inlet connector 300 with the cigarette machine body is higher, so that the convenience of assembling and disassembling the cigarette machine body in an air pipe is improved; in addition, the connection sealing performance of the air inlet joint 300 and the cigarette machine body is better.

Similarly, in this embodiment, as shown in fig. 1, an air outlet joint 400 may be further connected to the air outlet end of the main pipe 100. The air outlet connector 400 is used for being communicated with an air inlet of a public flue or an air inlet of another device, and compared with the main pipe body 100 which can be wound and deformed, the air outlet connector 400 with a fixed shape is more convenient to disassemble and assemble with the public flue and the like, and the connection sealing performance is higher.

In this embodiment, the air duct may further include an air inlet connector 300, as shown in fig. 2, an air inlet end of the inner sleeve 110 extends out of the outer sleeve 120 along an axial direction thereof to form an inner air inlet insertion section 111, and the air inlet connector 300 is inserted into the inner air inlet insertion section 111 and is connected to the inner air inlet insertion section 111 in a sealing manner. Here is a specific form that the air inlet joint 300 is connected with the main pipe body 100, the air inlet joint 300 may include a connecting portion for connecting with the cigarette machine body and an inserting portion for inserting into the inner air inlet inserting section 111, a part of the inserting portion inserted into the inner air inlet inserting section 111 forms a coinciding pipe section, a connection area of the coinciding pipe section is much larger than a connection area when the end of the air inlet joint 300 is connected with the end of the main pipe body 100, so that a connection sealing property of the air inlet joint 300 and the main pipe body 100 is greatly improved. Specifically, the air inlet joint 300 may be inserted into the inner air inlet insertion section 111, or the inner air inlet insertion section 111 may be inserted into the air inlet joint 300.

Similarly, in this embodiment, as shown in fig. 2, the air duct further includes an air outlet connector 400, the air outlet end of the inner sleeve 110 extends out of the outer sleeve 120 along the axial direction thereof to form an inner air outlet insertion section 112, and the air outlet connector 400 is inserted into the inner air outlet insertion section 112 and is connected to the inner air outlet insertion section 112 in a sealing manner. The connection area of the air outlet connector 400 and the inner air outlet insertion section 112 is large, the connection sealing performance is high, and the connection is far away from the connection between the similar inner air inlet insertion section 111 and the air inlet connector 300, which is not described herein again.

Specifically, in the present embodiment, as shown in fig. 4, the inflation and deflation assembly 200 may include an inflation nozzle 210 and a cap 220 capable of sealing the inflation nozzle 210, the inflation nozzle 210 is disposed on the outer wall of the outer sleeve 120, and a connection strap 230 is connected between the cap 220 and the inflation nozzle 210. In this embodiment, the inflation and deflation assembly 200 is a specific form of the assembly, when the air containing cavity 130 needs to be inflated, the cap 220 is removed, the inflation device is connected with the inflation nozzle 210, the air containing cavity 130 is inflated, and after the inflation is completed, the cap 220 is covered on the inflation nozzle 210 again. When the air containing cavity 130 needs to be deflated, the cap 220 is taken down, the main pipe body 100 is pressed, the air in the air containing cavity 130 is enabled to run out through the inflating nozzle 210, and after the deflation is finished, the cap 220 can be covered on the inflating nozzle 210, so that the situation that the winding shape of the air containing cavity 130 is affected by the fact that external air enters the air containing cavity 130 through the inflating nozzle 210 is reduced. The arrangement of the charging connector 210 facilitates the communication between the charging device and the charging port, and the convenience of charging and discharging air of the air pipe can be improved; the cap 220 can be connected to the air charging nozzle 210 by the connecting band 230, so that the occurrence of loss when the cap 220 is taken down is reduced, and the use convenience of the air duct is improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The air pipe is characterized by comprising a main pipe body (100), wherein the main pipe body (100) comprises an inner sleeve (110) and an outer sleeve (120) sleeved outside the inner sleeve (110), a sealed air containing cavity (130) is formed between the inner sleeve (110) and the outer sleeve (120), and an air charging and discharging assembly (200) is arranged on the inner sleeve (110) or the outer sleeve (120); when the air containing cavity (130) is in an air release state, the main pipe body (100) can be wound.

2. The air hose according to claim 1, characterized in that the inner sleeve (110) is integrally formed with the outer sleeve (120); or the two ends of the outer sleeve (120) are in one-to-one corresponding sealing connection with the two ends of the inner sleeve (110).

3. The air hose according to claim 1, characterized in that both ends of the outer sleeve (120) are provided with outer connecting sections, the inner diameter of the outer connecting sections is consistent with the outer diameter of the inner sleeve (110) at the corresponding position, and the outer connecting sections are connected with the inner sleeve (110) in a sealing manner;

or, both ends of the inner sleeve (110) are provided with inner connecting sections, the outer diameter of each inner connecting section is consistent with the inner diameter of the outer sleeve (120) at the corresponding position, and the inner connecting sections are hermetically connected with the outer sleeve (120).

4. Air hose according to any of claims 1 to 3, wherein the inner wall of the inner sleeve (110) is smoothly transitioned.

5. Air hose according to any of claims 1-3, characterized in that the inner sleeve (110) is made of an oleophobic material.

6. Air hose according to any of claims 1 to 3, wherein the inner tube wall of the inner sleeve (110) is coated with an oil-phobic layer.

7. The air duct according to any of claims 1-3, characterized in that the air inlet end of the primary duct body (100) is connected to an air inlet connection (300); and/or the air outlet end of the main pipe body (100) is communicated with an air outlet joint (400).

8. The air hose according to any one of claims 1 to 3, further comprising an air inlet connector (300), wherein the air inlet end of the inner sleeve (110) axially extends out of the outer sleeve (120) to form an inner air inlet plug section (111), and the air inlet connector (300) is plugged into the inner air inlet plug section (111) and is hermetically connected with the inner air inlet plug section (111);

and/or the air pipe further comprises an air outlet connector (400), the air outlet end of the inner sleeve (110) extends out of the outer sleeve (120) along the axial direction of the inner sleeve to form an inner air outlet insertion section (112), and the air outlet connector (400) is inserted into the inner air outlet insertion section (112) and is in sealing connection with the inner air outlet insertion section (112).

9. The air hose according to any of claims 1-3, wherein said inflation/deflation assembly (200) comprises an inflation nozzle (210) and a cap (220) capable of closing said inflation nozzle (210), said inflation nozzle (210) is disposed on the outer wall of said outer sleeve (120), and a connection strap (230) is connected between said cap (220) and said inflation nozzle (210).

10. A range hood, characterized by comprising a range hood body and an air duct according to any one of claims 1 to 9, wherein the air inlet end of the main duct body (100) of the air duct is communicated with the air outlet of the range hood body.

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