CN114322280A

CN114322280A - Fresh air pipe, fresh air module and air conditioner

Info

Publication number: CN114322280A
Application number: CN202011056442.XA
Authority: CN
Inventors: 赵紫生; 游斌; 马列; 黄俊豪; 翟富兴; 周何杰; 林健辉; 林勇强
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2022-04-12

Abstract

The invention discloses a fresh air pipe, a fresh air module and an air conditioner. Wherein, the fresh air pipe includes the heat preservation body, the heat preservation body is made the structure reinforcing setting. Thus, condensation can be prevented.

Description

Fresh air pipe, fresh air module and air conditioner

Technical Field

The invention relates to the technical field of air conditioner adjustment, in particular to a fresh air pipe, a fresh air module and an air conditioner.

Background

In the related art, in order to meet the requirement of a user on air quality, an air conditioner (such as an indoor unit of an air conditioner, an all-in-one air conditioner, or a fresh air blower) is provided with a fresh air function, so as to guide outdoor air into a room, that is, introduce outdoor fresh air into the room.

Specifically, the air conditioner is provided with a fresh air duct, and an air inlet of the fresh air duct is connected with a fresh air pipe so as to be communicated with the outdoor environment through the fresh air pipe; air conditioners are generally installed indoors, so the fresh air duct generally extends to the outside through a wall hole. However, the wall hole is usually smaller in size, so that the pipe diameter of the fresh air pipe is also smaller, the fresh air intake is limited, and especially when the fresh air pipe and a refrigerant connecting pipe of an air conditioner are jointly installed in the same wall hole, the pipe diameter of the fresh air pipe is further reduced.

However, in the related art, the fresh air duct is made of a plastic material, and condensation is easily formed on the fresh air duct due to a temperature difference between indoor and outdoor environments.

Disclosure of Invention

The invention mainly aims to provide a fresh air pipe, and aims to solve the technical problem that condensation is easily formed in the fresh air pipe of an air conditioner in the related technology.

In order to achieve the purpose, the invention provides a fresh air pipe for an air conditioner. The fresh air pipe comprises a heat insulation pipe body, and the heat insulation pipe body is arranged in a structure reinforcing mode.

Optionally, the structural reinforcement is provided with a support structure, and the support structure is arranged on the heat preservation pipe body and used for supporting the heat preservation pipe body.

Optionally, the support structure comprises a support skeleton.

Optionally, the supporting framework is at least partially arranged in the pipe wall of the heat preservation pipe body.

Optionally, the supporting framework is arranged between the inner wall surface and the outer wall surface of the heat preservation pipe body; alternatively, the first and second electrodes may be,

the supporting framework is protruded out of the inner wall surface of the heat insulation pipe body at the inner side of the heat insulation pipe body; alternatively, the first and second electrodes may be,

the supporting framework protrudes out of the outer wall surface of the heat insulation pipe body from the outer side of the heat insulation pipe body.

Optionally, the thickness of the pipe wall of the heat preservation pipe body is greater than or equal to 3 millimeters and less than or equal to 8 millimeters.

Optionally, the supporting framework is supported on the inner side of the heat preservation pipe body, or the supporting framework is supported on the outer side of the heat preservation pipe body.

Optionally, the supporting framework is fixedly connected to the outer wall surface of the heat insulation pipe body, or the supporting framework is fixedly connected to the outer wall surface of the heat insulation pipe body.

Optionally, the supporting structure further comprises an inner protective skin, the inner protective skin is arranged on the inner side of the heat preservation pipe body, the supporting framework is supported on the inner side of the inner protective skin, or at least part of the supporting framework is arranged in the skin layer of the inner protective skin.

Optionally, the support structure further comprises an outer protective skin, and the outer protective skin is arranged on the outer side of the heat preservation pipe body.

Optionally, the heat-insulating pipe body is an integrated pipe body extending along the length direction of the heat-insulating pipe body; alternatively, the first and second electrodes may be,

the heat preservation body includes a plurality of sub-bodys that the length direction of heat preservation body set gradually.

Optionally, the supporting structure further includes an outer protective skin, the outer protective skin is disposed on the outer side of the heat-insulating pipe body, and the supporting framework is supported on the outer side of the outer protective skin, or at least part of the supporting framework is disposed in the skin layer of the outer protective skin.

Optionally, the support structure further comprises an inner protective skin, and the inner protective skin is arranged on the inner side of the heat preservation pipe body.

Optionally, the support structure further comprises an inner protection skin, the inner protection skin is arranged on the inner side of the heat insulation pipe body, and the inner protection skin is arranged on the inner side of the support framework; and/or the presence of a gas in the gas,

the supporting structure further comprises an outer protection skin, the outer protection skin is arranged on the outer side of the heat preservation pipe body, and the inner protection skin is arranged on the outer side of the supporting framework.

Optionally, the inner protective skin is bellows-shaped; and/or the presence of a gas in the gas,

the outer protective skin is in a corrugated pipe shape.

Optionally, the support framework comprises a spiral support rib spirally extending along the length direction of the heat preservation pipe body; the spiral supporting ribs are correspondingly arranged at the wave troughs of the inner protection skin, and/or the spiral supporting ribs are correspondingly arranged at the wave troughs of the outer protection skin.

Optionally, the inner protective skin is a plastic piece; and/or the presence of a gas in the gas,

the outer protective skin is a plastic piece.

Optionally, the inner protective skin is a PVC skin or a TPU skin; and/or the presence of a gas in the gas,

the outer protective skin is PVC skin or TPU skin.

Optionally, the inner protective skin has a thickness of less than or equal to 5 millimeters; and/or the presence of a gas in the gas,

the thickness of the outer protective skin is less than or equal to 5 mm.

Optionally, the support skeleton is a support frame.

Optionally, the support frame includes a plurality of axial support ribs extending along a length direction of the heat insulation pipe body, and the plurality of axial support ribs are distributed at intervals in a circumferential direction of the heat insulation pipe body.

Optionally, the support frame further includes a circumferential connecting rib, and the circumferential connecting rib connects the plurality of axial support ribs.

Optionally, the support skeleton is a net-like structure or a grid-like structure.

Optionally, the support framework comprises a spiral support rib spirally extending along the length direction of the heat preservation pipe body.

Optionally, the heat insulation pipe body is a foamed heat insulation pipe body; and/or

The supporting framework is a plastic piece or a metal piece; and/or the presence of a gas in the gas,

the fresh air pipe also comprises a fresh air joint, one end of the heat insulation pipe body is connected with the fresh air joint, and the fresh air joint is used for being connected with a fresh air interface of the air conditioner; and/or the presence of a gas in the gas,

the fresh air pipes are provided with a plurality of sections, and the two adjacent sections of fresh air pipes are connected through a connecting pipe body.

Optionally, the support structure comprises:

the inner protective skin is arranged on the inner side of the heat insulation layer; and/or the presence of a gas in the gas,

the outer protective skin, the interior protective skin is located the outside of heat preservation.

Optionally, the structural reinforcement includes making the thermal insulation pipe body with a thermal insulation material having a strength greater than 0.003 mpa.

Optionally, the fresh air pipe further comprises a rat-proof part, and the rat-proof part is arranged in an air inlet pipe opening of the heat insulation pipe body or the heat insulation pipe body.

Optionally, the ratproof piece is provided as a ratproof spring or a ratproof net; and/or the presence of a gas in the gas,

the rat guard and the support framework of the support structure are integrally arranged.

Optionally, the material of the heat preservation pipe body is polyethylene foam heat preservation material, polyurethane foam heat preservation material, phenolic foam heat preservation material, polystyrene board, polystyrene foam heat preservation material, extruded polystyrene heat preservation board, ceramic fiber blanket, aluminum silicate felt, alumina, silicon carbide fiber, aerogel felt, glass wool, rock wool, expanded perlite, micro-nano heat insulation, or foam cement.

The invention also provides a fresh air module which is characterized by comprising the fresh air pipe.

The invention also provides an air conditioner, which comprises the fresh air pipe; or, the air conditioner comprises the fresh air module.

The fresh air pipe adopts the heat-insulating pipe body to form the fresh air pipe, so that the temperature transmission inside and outside the fresh air pipe can be isolated, and the problem of condensation caused by temperature difference of the fresh air pipe can be prevented.

In addition, the fresh air pipe provided by the invention can eliminate the thickness of the plastic inner pipe or reduce the thickness of the plastic inner pipe by directly performing structural reinforcement on the heat insulation pipe body, so that the fresh air pipe has higher structural strength, and the inner diameter of the fresh air pipe can be (greatly) increased under the condition that the outer diameter of the fresh air pipe is not changed, so that the fresh air volume is increased.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a view angle of the fresh air module with the fresh air duct in fig. 1;

FIG. 3 is a schematic view of the new wind module of FIG. 2 from another perspective; wherein, the right end of the wall of the fresh air pipe is stripped to expose the supporting framework;

FIG. 4 is a partial schematic view of the right end of the fresh air duct of FIG. 3;

FIG. 5 is an exploded view of the fresh air duct of FIG. 3;

FIG. 6 is a schematic cross-sectional view of the fresh air duct of FIG. 5;

FIG. 7 is a partial schematic view of the right end of the fresh air duct of FIG. 6;

FIG. 8 is a schematic structural view of a fresh air module with a fresh air duct according to another embodiment of the present invention installed therein; wherein, the right end of the wall of the fresh air pipe is stripped to expose the supporting framework;

FIG. 9 is a partial schematic view of the right end of the fresh air duct of FIG. 8;

FIG. 10 is a schematic cross-sectional view of the fresh air duct of FIG. 8;

FIG. 11 is a schematic structural view of a fresh air module with a fresh air duct according to yet another embodiment of the present invention;

FIG. 12 is an exploded view of the fresh air module of FIG. 11;

FIG. 13 is an exploded view of the multi-section fresh air duct of FIG. 12;

FIG. 14 is a schematic structural view of the fresh air duct of FIG. 12;

FIG. 15 is a schematic structural view of a fifth embodiment of the fresh air duct of the present invention;

FIG. 16 is a schematic structural view of a seventh embodiment of the fresh air duct of the present invention;

FIG. 17 is a schematic structural view of an eighth embodiment of the fresh air duct of the present invention;

FIG. 18 is a schematic structural view of a ninth embodiment of the fresh air duct of the present invention;

FIG. 19 is a schematic structural view of a tenth embodiment of the fresh air duct of the present invention;

FIG. 20 is a schematic structural view of an eleventh embodiment of the fresh air duct of the present invention;

FIG. 21 is a schematic cross-sectional view of the fresh air duct of FIG. 20;

fig. 22 is a schematic structural view of a twelfth embodiment of the fresh air duct of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Fresh air pipe	25	External protective skin
10	Thermal insulation pipe body	30	Fresh air connector
				11	Sub-pipe body	40	Rat-proof part
20	Supporting framework	50	Connecting pipe body
				21	Spiral support rib	1000	Air conditioner
22	Axial support rib	200	Fresh air interface
				23	Circumferential connecting rib	300	Shell body
24	Inner protective leather	400	Fresh air module

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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 if the description of "first", "second", etc. is provided in the embodiment of the present invention, the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The invention provides a fresh air pipe and an air conditioner. The air conditioner may be a split air conditioner (including an indoor air conditioner (such as a wall-mounted indoor air conditioner or a floor-type indoor air conditioner) and an outdoor air conditioner) having a fresh air function, an all-in-one air conditioner (such as a window air conditioner or a mobile air conditioner), or a fresh air conditioner.

In one embodiment, as shown in fig. 1-3, the air conditioner 1000 has a fresh air duct (it is understood that if the air conditioner 1000 is an air conditioner split unit, an indoor unit of the air conditioner has a fresh air duct), and the fresh air duct 100 is connected to an air inlet of the fresh air duct for introducing outdoor fresh air (i.e., fresh air) into the fresh air duct to be delivered into a room.

Wherein, the air intake department in new trend wind channel is equipped with new trend interface 200, new trend pipe 100 is connected in this new trend interface 200.

Specifically, as shown in fig. 1-3, 8, 11 and 12, the indoor unit of the air conditioner 1000 includes a casing 300 and a fresh air module 400 disposed in the casing 300 and having a fresh air duct, and the fresh air interface 200 is disposed in the fresh air module 400. Optionally, as shown in fig. 1-3, 8, 11 and 12, the fresh air module 400 includes a fresh air housing 300 having a fresh air duct and a fresh air wheel disposed in the fresh air duct, and the fresh air interface 200 is disposed in the fresh air housing 300.

Of course, in other embodiments, the fresh air duct may also be directly formed in the casing 300 of the indoor unit of the air conditioner, that is, the fresh air module 400 is not separately provided, and the fresh air interface 200 is directly provided in the casing 300 of the indoor unit of the air conditioner.

In an embodiment of the present invention, as shown in fig. 2 to 16, the fresh air duct 100 includes an insulating duct body 10, and the insulating duct body 10 is provided with a structural reinforcement.

Thus, the heat-insulating pipe body 10 is adopted to form the fresh air pipe 100, so that the temperature transmission inside and outside the fresh air pipe 100 can be isolated, and the condensation problem caused by the temperature difference can be prevented from being generated in the fresh air pipe 100. Moreover, by structurally reinforcing the heat-insulating pipe body 10, the fresh air duct 100 can have high structural strength, so that the wear-resistant characteristic of the fresh air duct 100 can be enhanced, and the fresh air duct 100 can be prevented from being deformed or even damaged in the installation or use process.

It should be particularly noted that, in the present invention, the heat preservation pipe body 10 with the structure enhanced to form the fresh air pipe 100 can (greatly) increase the inner diameter of the fresh air pipe 100 under the condition that the outer diameter of the fresh air pipe 100 is not changed, so that the cross-sectional area of the fresh air pipe 100 can (greatly) be increased, and the fresh air volume can be increased to meet the requirement of the user on the fresh air volume; thereby improving the utilization rate of the wall hole.

In order to facilitate the intuitive embodying of the advantages of the fresh air duct 100 of the present invention, the present invention also provides a structure of the fresh air duct 100 in the related art, in which the fresh air duct 100 includes a plastic inner tube and a heat insulating outer tube sleeved outside the plastic inner tube, the heat insulating outer tube plays a role of heat insulation to prevent the fresh air duct 100 from forming condensation due to a temperature difference between indoor and outdoor environments; the plastic inner pipe is thick so as to ensure that the fresh air pipe 100 has certain strength, so that the effective inner diameter of the fresh air pipe 100 is smaller, and the fresh air intake is smaller.

Compared with the structure of the fresh air duct 100 in the related art, the fresh air duct 100 of the present invention directly performs the structure enhancement on the heat preservation pipe body 10, and cancels the plastic inner pipe (or reduces the thickness of the plastic inner pipe, see the other embodiments), so that the fresh air duct 100 has higher structural strength, and the inner diameter of the fresh air duct 100 can be (greatly) increased under the condition that the outer diameter of the fresh air duct 100 is not changed, so as to increase the fresh air volume.

In the embodiment, the heat-insulating pipe 10 can be structurally reinforced by two aspects, on one hand, the manufacturing material of the heat-insulating pipe 10 is changed or improved, that is, the heat-insulating pipe 10 is made of a heat-insulating material (such as a mixed material) with higher strength, so that the heat-insulating pipe 10 has sufficient strength; on the other hand, a support structure is added to support the heat preservation pipe 10, so as to enhance the structural strength of the fresh air pipe 100. The above two improvements can be performed separately or simultaneously.

Specifically, one may: the heat insulation pipe body 10 is made of a heat insulation material with the strength of more than or equal to 0.003 MPa (namely, when the heat insulation pipe body 10 with the outer diameter of 68 mm and the inner diameter of 60 mm is pressed by 10N in a test, the heat insulation pipe body 10 cannot be flattened); and/or, the fresh air duct 100 further includes a supporting structure, and the supporting structure is disposed on the heat preservation pipe 10 to support the heat preservation pipe 10. That is, the structural reinforcement includes that the heat insulation pipe body 10 is made of a heat insulation material with the strength of more than or equal to 0.003 mpa, so that the heat insulation pipe body 10 has sufficient strength; and/or, the fresh air duct 100 further comprises a support structure, which is disposed on the heat preservation pipe 10 and is used for supporting the heat preservation pipe 10.

Therefore, the heat insulation pipe body 10 is made of the heat insulation material with the strength of more than or equal to 0.003 MPa, the structural strength and the wear-resisting property of the heat insulation pipe body 10 can be enhanced, so that the thickness of a plastic inner pipe or a thinned plastic inner pipe can be eliminated, the fresh air pipe 100 can have higher structural strength, and the inner diameter of the fresh air pipe 100 can be (greatly) increased under the condition that the outer diameter of the fresh air pipe 100 is not changed, so that the fresh air volume is increased.

And through increasing the bearing structure who is used for supporting heat preservation body 10, can strengthen the overall structure intensity and the wear resistant characteristic of fresh air pipe 100 to can cancel the thickness of plastics inner tube or attenuate plastics inner tube, so that both can make fresh air pipe 100 have higher structural strength, can be under the unchangeable circumstances of the external diameter of fresh air pipe 100 (by a wide margin) increase fresh air pipe 100's internal diameter, in order to increase the fresh air amount of wind.

For the above first structural reinforcement arrangement mode (i.e. changing or improving the manufacturing material of the thermal insulation pipe 10 to make the thermal insulation pipe 10 have sufficient strength to eliminate the plastic inner pipe or reduce the thickness of the plastic inner pipe), it needs to be further explained that:

1) the fresh air duct 100 can be made of the heat preservation pipe body 10 alone, so that the inner diameter of the fresh air duct 100 can be (greatly) increased under the condition that the outer diameter of the fresh air duct 100 is not changed, and the fresh air volume can be increased. Alternatively, an inner protective skin 24 having a small thickness may be additionally formed on the inner wall surface of the heat insulating pipe 10, and/or an outer protective skin 25 having a small thickness may be additionally formed on the outer wall surface of the heat insulating pipe 10, so that the heat insulating pipe 10 is protected and the requirement for the material of the heat insulating pipe 10 is somewhat reduced.

2) The thickness of the pipe wall of the heat-insulating pipe body 10 can be less than or equal to 8 mm, so that the inner diameter of the fresh air pipe 100 can be ensured to be increased; however, the thickness of the pipe wall of the heat-insulating pipe 10 is also larger than or equal to 3 mm, so that the fresh air pipe 100 has sufficient structural strength; if the wall thickness of the heat-insulating pipe 10 can be 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, etc., it can be ensured that the inner diameter of the fresh air pipe 100 can be made larger (even made the largest) under the condition that the maximum outer diameter of the fresh air pipe 100 is fixed, so as to ensure that the fresh air pipe 100 has better heat-insulating performance, and prevent the inner wall surface and the outer wall surface of the fresh air pipe 100 from condensation caused by temperature difference; but also can ensure that the fresh air duct 100 has enough structural strength to prevent damage during installation; and the fresh air duct 100 can have a larger fresh air intake.

3) The inner diameter of the heat preservation pipe 10 can be selected to be more than or equal to 25 mm, and less than or equal to 60 mm, and can be selected according to different user requirements in specific application.

4) The material of the heat-insulating pipe body 10 can be selected from a foaming heat-insulating material, such as a Polyethylene (PE) foaming heat-insulating material.

5) The fresh air duct 100 must not significantly collapse and sharp corners appear.

The above second structural reinforcement mode (i.e., the additional support structure) will be mainly described in detail below.

Further, as shown in fig. 2-16, the support structure includes a support frame 20. Specifically, the supporting framework 20 is disposed on the heat-insulating pipe 10 to support the heat-insulating pipe 10. Wherein, the supporting framework 20 is used for supporting the heat preservation pipe body 10, provides support and intensity for the heat preservation pipe body 10 to avoid the heat preservation pipe to warp, its structural style is not limited to helical structure, frame construction etc..

Like this, support heat preservation body 10 through supporting framework 20, can effectively strengthen the overall structure intensity and the wear-resisting characteristic of fresh air pipe 100 under the prerequisite that does not increase or increase the internal diameter of fresh air pipe 100 by a small amount.

In the embodiment, the fresh air duct 100 is a generally circular duct, i.e. the insulated duct 10 is a generally circular duct, and the overall shape of the supporting frame 20 is adapted to the shape of the insulated duct 10. Of course, it is not excluded that in some embodiments, the fresh air duct 100 and the insulated tubular body 10 are configured as square tubes or other polygonal tubes.

Further, the supporting framework 20 is at least partially disposed in the pipe wall of the insulated pipe 10. That is, the supporting frame 20 is at least partially embedded in the wall of the heat-insulating pipe 10.

So, can be convenient for carry on spacingly and fixed to support skeleton 20 on the one hand, on the other hand accessible heat preservation body 10 improves the structural strength of heat preservation body 10 with the combination of support skeleton 20 to can improve fresh air pipe 100's overall structure intensity, increase the internal diameter that strengthens fresh air pipe 100 with the wall thickness that can reduce heat preservation body 10, with the increase fresh air amount of wind.

In the present embodiment, as shown in fig. 2 to 10, the supporting frame 20 is completely disposed inside the pipe wall of the insulated pipe 10, that is, the supporting frame 20 is disposed between the inner wall surface and the outer wall surface of the insulated pipe 10. In this manner, the support frame 20 can be hidden.

Therefore, the fresh air pipe 100 is composed of the heat insulation pipe body 10 and the supporting framework 20 arranged in the pipe wall of the heat insulation pipe body 10, the heat insulation pipe body 10 has heat insulation property and wear resistance property, the supporting framework 20 can improve the structural strength of the heat insulation pipe body 10, and the combination of the heat insulation pipe body 10 and the supporting framework can enable the fresh air pipe 100 to have higher structural strength so as to prevent deformation or damage and the like during installation and use; under the condition that the outer diameter of the fresh air pipe 100 is not changed, the inner diameter of the fresh air pipe 100 can be greatly increased so as to increase the fresh air quantity and improve the utilization rate of the wall hole space; and can also prevent condensation.

Of course, in other embodiments, the supporting frame 20 may also protrude from the inner wall surface of the heat insulating pipe 10 inside the heat insulating pipe 10; alternatively, the supporting frame 20 may be protruded from the outer wall surface of the heat insulating pipe 10 outside the heat insulating pipe 10; alternatively, the supporting frame 20 may be protruded from the inner wall surface of the heat insulating pipe 10 at the inner side of the heat insulating pipe 10, and the supporting frame 20 may be protruded from the outer wall surface of the heat insulating pipe 10 at the outer side of the heat insulating pipe 10.

In this embodiment, the thickness of the wall of the insulating tube layer is greater than or equal to 3 mm and less than or equal to 8 mm, and may be 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, or 7.5 mm. It can be understood that if the thickness is too small, the thermal insulation performance of the thermal insulation pipe layer is poor, and the structural strength of the thermal insulation pipe layer is low; if the thickness is too large, the inner diameter of the fresh air duct 100 becomes small, and the fresh air volume becomes small.

Therefore, the inner diameter of the fresh air pipe 100 can be made larger (even made the largest) under the condition that the maximum outer diameter of the fresh air pipe 100 is fixed, so that the fresh air pipe 100 is ensured to have better heat insulation performance, and condensation caused by temperature difference between the inner wall surface and the outer wall surface of the fresh air pipe 100 is prevented; but also can ensure that the fresh air duct 100 has enough structural strength to prevent damage during installation; and the fresh air duct 100 can have a larger fresh air intake.

Specifically, the supporting frame 20 may be a metal member, a plastic member, or other structural members with certain strength, as long as it can provide sufficient support for the heat insulating pipe 10.

Further, the heat conductivity coefficient at normal temperature of the material of the heat insulating pipe 10 is less than or equal to 0.12W/(K · m), so that the heat insulating pipe 10 has high heat insulating property.

Further, the heat insulation pipe body 10 is a foamed heat insulation pipe body 10, that is, the heat insulation pipe body 10 is made of a foamed heat insulation material, and has a low heat conductivity coefficient and a high heat insulation characteristic. Wherein, the heat preservation pipe body 10 has certain elasticity and flexibility.

Specifically, the heat insulation pipe body 10 is made of Polyethylene (PE) foam heat insulation material, polyurethane foam heat insulation material, phenolic foam heat insulation material, or the like.

Of course, in other embodiments, the material of the heat preservation pipe 10 may also be polystyrene board, polystyrene foam heat preservation material, extruded polystyrene heat preservation board, ceramic fiber blanket, aluminum silicate felt, alumina, silicon carbide fiber, aerogel felt, glass wool, rock wool, expanded perlite, micro-nano heat insulation, or foam cement.

Further, as shown in fig. 2, 3, 5, 6, 8, and 11-13, the fresh air duct 100 further includes a fresh air connector 30, one end of the heat preservation pipe 10 is connected to the fresh air connector 30, and the fresh air connector 30 is used for being connected to a fresh air interface 200 of the air conditioner 1000. In this manner, the fresh air duct 100 can be conveniently connected to the air conditioner 1000. Specifically, the air outlet end of the heat insulation pipe 10 is connected to the fresh air connector 30.

It will be appreciated that the insulated pipe body 10 generally has a certain elasticity and flexibility, so that the insulated pipe body 10 and the fresh air connector 30 can be connected by interference.

Optionally, the heat insulation pipe 10 is hermetically connected to the fresh air connector 30 to prevent air leakage, for example, the joint between the heat insulation pipe 10 and the fresh air connector 30 can be wrapped by an adhesive tape.

Of course, to support that skeleton 20 is helical structure, and support skeleton 20 locates the outer wall or the internal wall of heat preservation body 10 (see below), accessible this helical structure and new trend joint 30 threaded connection (can understand, if support skeleton 20 locates the outer wall of heat preservation body 10, then new trend joint 30 has the internal thread, if support skeleton 20 locates the internal wall of heat preservation body 10, then new trend joint 30 has the external thread) to realize that heat preservation body 10 is connected with new trend joint 30.

Specifically, the fresh air connector 30 is detachably connected with the fresh air interface 200, such as detachably connected through a clamping structure. If, the outer peripheral face of new trend joint 30 is equipped with the elasticity buckle, when new trend joint 30 inserts and establishes into new trend interface 200, the joint position (such as card protruding or draw-in groove etc.) outside new trend interface 200 of elasticity buckle joint.

Further, as shown in fig. 2 to 13, the fresh air duct 100 further includes a rat guard 40, and the rat guard 40 is disposed at an air inlet pipe opening of the heat insulation pipe 10 or inside the heat insulation pipe 10. In this embodiment, the rat guard 40 is disposed at the air inlet of the heat-insulating tube 10.

Thus, mice, insects, etc. can be prevented from entering the fresh air duct 100.

Alternatively, the ratproof member 40 may be a ratproof spring, or a ratproof net, etc.

Further, as shown in fig. 4 and 9, the ratproof member 40 is integrally provided with the support frame 20, so that the installation process can be simplified. Of course, in other embodiments, as shown in fig. 11 to 13, the ratproof member 40 may be assembled with the supporting frame 20 separately, or the ratproof member 40 may be assembled with the heat insulating pipe 10 separately.

In some embodiments, the fresh air duct 100 may also have multiple sections, and two adjacent fresh air ducts 100 may be connected by the connecting tube 50. Specifically, the connecting tube 50 has two connectors to connect two adjacent segments of the fresh air ducts 100, and the connection between the fresh air ducts 100 and the connectors of the connecting tube refers to the connection between the fresh air ducts 100 and the fresh air connectors 30, which is not described in detail herein. Thus, the installation difficulty (installation outdoors) of the fresh air duct 100 can be simplified, and the fresh air duct 100 can be prevented from being damaged in the installation process; the number of segments of the fresh air duct 100 can also be selected according to the user's requirements to improve the installation flexibility.

In the embodiment, the structural form of the supporting framework 20 is many, and the following description is given by way of example.

Further, as shown in fig. 2 to 7, the supporting frame 20 has a spiral structure, and specifically, the supporting frame 20 includes a spiral supporting rib 21 that extends spirally along the length direction of the heat insulating pipe 10. Thus, the structural strength of the fresh air duct 100 can be improved, and the fresh air duct 100 can be bent conveniently for installation.

Specifically, the spiral support rib 21 is of a steel wire structure or the like.

In this embodiment, as shown in fig. 2-7, the ratproof piece 40 is a ratproof spring that is integrally disposed with the support frame 20.

In another embodiment of the present invention, as shown in fig. 8-10, the support frame 20 is a support frame.

In this embodiment, as shown in fig. 8 to 10, in particular, the support frame includes a plurality of axial support ribs 22 extending along the length direction of the heat insulating pipe 10, and the plurality of axial support ribs 22 are spaced apart in the circumferential direction of the heat insulating pipe 10.

In this embodiment, as shown in fig. 8 to 10, in particular, the support frame further includes a circumferential connecting rib 23, and the circumferential connecting rib 23 connects the plurality of axial support ribs 22.

Optionally, the circumferential connecting rib 23 is an annular rib, and the circumferential connecting rib 23 is distributed at intervals in the length direction of the heat insulation pipe body 10.

In this embodiment, the cross-sectional shape of the axial support rib 22 may be circular, square, triangular, kidney-shaped, oval or the like, and/or the cross-sectional shape of the circumferential connecting rib 23 may be circular, square, triangular, kidney-shaped, oval or the like.

In this embodiment, the extending direction of the axial support rib 22 may be made to coincide with the extending direction of the center line of the heat insulating pipe 10, or the axial support rib 22 may be made to extend in a circumferential direction of the heat insulating pipe 10.

In yet another embodiment of the present invention, the supporting skeleton 20 is a net-like structure or a grid-like structure.

In an embodiment, the supporting framework 20 may support the heat preservation pipe 10 by other methods or by combining with other structures, which will be described below.

For example, in another embodiment of the present invention, as shown in fig. 11 to 14, the supporting frame 20 is supported on the outside of the insulated pipe 10. Thus, the supporting frame 20 can not only support the heat-insulating pipe 10, but also protect the heat-insulating pipe 10.

In this embodiment, further, the inner supporting surface of the supporting framework 20 is attached to the outer wall surface of the insulated pipe 10, so as to support the insulated pipe 10.

In this embodiment, specifically, the supporting framework 20 is fixedly connected to the outer wall surface of the heat preservation pipe 10. Thus, the supporting framework 20 can be limited, and the structural strength of the fresh air duct 100 can be improved.

For another example, in the fifth embodiment of the present invention, as shown in fig. 15, the supporting frame 20 is supported on the inner side of the heat insulating pipe 10.

In this embodiment, further, the outer supporting surface of the supporting framework 20 is attached to the inner wall surface of the heat insulating pipe 10, so as to support the heat insulating pipe 10.

In this embodiment, specifically, the supporting frame 20 is fixedly connected to the inner wall surface of the heat insulating pipe 10. Thus, the supporting framework 20 can be limited, and the structural strength of the fresh air duct 100 can be improved.

For another example, in the sixth embodiment of the present invention, the support frame 20 includes an inner support frame and an outer support frame, the inner support frame is supported on the inner side of the heat insulating pipe 10, and the outer support frame is supported on the outer side of the heat insulating pipe 10.

And so on.

In the specific design, on the basis of the structure, the supporting structure can be further designed. As in the seventh embodiment of the present invention, the supporting structure further includes an inner protective skin 24, the inner protective skin 24 is disposed on the inner side of the insulated pipe 10, and the inner protective skin 24 is disposed on the inner side of the supporting frame 20; and/or, the supporting structure further comprises an outer protective skin 25, the outer protective skin 25 is arranged on the outer side of the heat-insulating pipe body 10, and the inner protective skin 24 is arranged on the outer side of the supporting framework 20.

In this embodiment, in particular, as shown in fig. 16, the support structure also comprises both an inner protective skin 24 and an outer protective skin 25. Wherein, the inner protective skin 24 and the outer protective skin 25 are both tubular structures.

In this embodiment, it is understood that the inner protective skin 24 and/or the outer protective skin 25 are relatively thin (it is understood that the plastic inner tube in the related design is thinned to form the protective skin), which does not significantly reduce the inner diameter of the fresh air duct 100.

So, through setting up interior protection skin 24 and/or outer protection skin 25, interior protection skin 24 can protect the internal wall face of heat preservation body 10, and outer protection skin 25 can protect the outer wall face of heat preservation body 10, and protection skin (interior protection skin 24 and/or outer protection skin 25) mainly protects and protects heat preservation body 10 promptly. In addition, the protective skin (inner protective skin 24 and/or outer protective skin 25) can also have a weak supporting effect on the heat preservation pipe body 10, so as to further enhance the overall structural strength of the fresh air pipe 100.

In this embodiment, it can be understood that if the supporting framework 20 is disposed in the pipe wall of the heat-insulating pipe 10, the heat-insulating pipe 10 and the supporting framework 20 therein are sandwiched between the inner protective skin 24 and the outer protective skin 25; if the supporting framework 20 is supported at the inner side of the heat-insulating pipe body 10, the supporting framework 20 is arranged between the inner protective skin 24 and the heat-insulating pipe body 10; if the supporting frame 20 is supported outside the heat insulating pipe 10, the supporting frame 20 is disposed between the outer protective skin 25 and the heat insulating pipe 10.

In this embodiment, further, the inner protective sheath 24 may be made in a bellows shape; and/or the outer protective skin 25 is in the shape of a bellows.

In this embodiment, in particular, the inner protective skin 24 and the outer protective skin 25 are each in the shape of a bellows. Thus, the flexibility of the fresh air duct 100 can be improved.

In this embodiment, specifically, the supporting framework 20 is a spiral structure, that is, the supporting framework 20 includes a spiral supporting rib 21 extending spirally along the length direction of the insulated pipe 10.

In this embodiment, further, the spiral support rib 21 is correspondingly disposed at the wave trough of the inner protection skin 24, and/or the spiral support rib 21 is correspondingly disposed at the wave trough of the outer protection skin 25.

In this embodiment, specifically, the spiral support rib 21 is correspondingly disposed at the wave trough of the inner protection skin 24, and correspondingly disposed at the wave trough of the outer protection skin 25. Thus, the structures of the parts of the fresh air duct 100 are matched relatively.

In this embodiment, further, the inner protective skin 24 is a plastic part, and/or the outer protective skin 25 is a plastic part. Specifically, the inner protective skin 24 is a PVC (i.e., polyvinyl chloride plastic) skin or a TPU (i.e., thermoplastic urethane rubber) skin, etc., and/or the outer protective skin 25 is a PVC (i.e., polyvinyl chloride plastic) skin or a TPU (i.e., thermoplastic urethane rubber) skin, etc.

In this embodiment, in particular, the thickness of the inner protective skin 24 is less than or equal to 5 mm; and/or the thickness of the outer protective skin 25 is less than or equal to 5 mm. In this way, the inner protective skin 24 and/or the outer protective skin 25 can be prevented from having a large influence on the inner diameter of the fresh air duct 100.

In this embodiment, in particular, the thickness of the inner protective skin 24 is greater than or equal to 0.5 mm; and/or the thickness of the outer protective skin 25 is greater than or equal to 0.5 mm.

In this embodiment, the thickness of the inner protective skin 24 is optionally greater than or equal to 1 mm and less than or equal to 2 mm, such as 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, or 1.9 mm. Of course, alternatively, 0.6 mm, 0.8 mm, 09 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 2.7 mm, or the like may be used.

In this embodiment, the thickness of the outer protective skin 25 is optionally greater than or equal to 1 mm and less than or equal to 2 mm, such as 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, or 1.9 mm. Of course, alternatively, 0.6 mm, 0.8 mm, 09 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 2.7 mm, or the like may be used.

In other embodiments, the supporting structure may be provided in other structural forms, such as in the eighth embodiment of the present invention, as shown in fig. 17, so that: the supporting structure comprises an inner protective skin 24, and the inner protective skin 24 is arranged on the inner side of the heat-insulating layer; and/or the supporting structure comprises an outer protective skin 25, and the inner protective skin 24 is arranged on the outer side of the heat-insulating layer. In this embodiment, various configurations of the inner protective skin 24 and/or the outer protective skin 25 can refer to the seventh embodiment, and a detailed description thereof is not necessary.

As in the ninth to eighteenth embodiments of the present invention, the support structure includes a support frame 20, an inner protective skin 24 and/or an outer protective skin 25, and the support frame 20 is disposed based on the inner protective skin 24 or the outer protective skin 25, which will be described separately below.

In the ninth to twelfth embodiments of the present invention, as shown in fig. 18 to 22, the supporting structure includes a supporting frame 20 and an inner protective skin 24, the inner protective skin 24 is disposed inside the insulated pipe body 10, and the supporting frame 20 is at least partially disposed in the skin of the inner protective skin 24. The implementation manner in which the supporting framework 20 is at least partially disposed in the skin layer of the inner protective skin 24 can refer to the implementation manner in which the supporting framework 20 is at least partially disposed in the pipe wall of the heat insulating pipe 10 in the above embodiment, and thus, detailed description is not necessary here.

Thus, the supporting framework 20 is at least partially arranged in the skin layer of the inner protective skin 24 to enhance the structural strength of the inner protective skin 24, so as to support the heat-insulating pipe 10 together and improve the structural strength of the fresh air pipe 100.

Wherein, in the ninth and tenth embodiments of the invention, as shown in fig. 18 and 19, the support structure is completely provided within the skin of the inner protective skin 24. In the eleventh and twelfth embodiments of the present invention, as shown in fig. 21 and 22, the support structure portion is provided inside the skin layer of the inner protective skin 24 and protrudes from the inner wall surface of the inner protective skin 24 at the inner side of the inner protective skin 24.

In the ninth to twelfth embodiments of the present invention, as shown in fig. 18 to 22, the support structure further includes an outer protective skin 25, and the outer protective skin 25 is provided on the outer side of the insulated pipe body 10.

In the ninth to twelfth embodiments of the present invention, other features of the inner protective skin 24 and the outer protective skin 25 can be applied to the seventh embodiment of the present invention, and need not be described in detail herein.

In the thirteenth embodiment of the present invention, the supporting structure includes a supporting frame 20 and an inner protective skin 24, the inner protective skin 24 is disposed on the inner side of the insulated pipe 10, and the supporting frame 20 is disposed on the inner side of the inner protective skin 24. In this embodiment, optionally, the supporting structure further includes an outer protective skin 25, and the outer protective skin 25 is disposed on the outer side of the insulated pipe 10.

In the fourteenth to seventeenth embodiments of the present invention, the supporting structure further includes an outer protective skin 25, the outer protective skin 25 is disposed on the outer side of the heat insulating pipe 10, and the supporting frame 20 is at least partially disposed in the outer protective skin 25. The implementation manner in which the supporting framework 20 is at least partially disposed in the skin layer of the outer protective skin 25 can refer to the implementation manner in which the supporting framework 20 is at least partially disposed in the pipe wall of the heat-insulating pipe 10 in the above embodiment, and thus, detailed description is not necessary here.

Thus, the supporting framework 20 is at least partially arranged in the skin layer of the outer protective skin 25 to enhance the structural strength of the outer protective skin 25, so as to support the heat-insulating pipe 10 together and improve the structural strength of the fresh air pipe 100.

Wherein, in the fourteenth and fifteenth embodiments of the invention, the support structure is provided entirely within the skin layer of the outer protective skin 25. In the sixteenth and seventeenth embodiments of the present invention, the supporting structure is partially provided in the skin layer of the outer sheath 25 and protrudes from the outer wall surface of the outer sheath 25 at the outer side of the outer sheath 25.

In the fourteenth and fifteenth embodiments of the present invention, the supporting structure further includes an inner protective skin 24, and the inner protective skin 24 is disposed on the inner side of the insulated pipe body 10.

In the fourteenth to seventeenth embodiments of the present invention, other features of the inner protective skin 24 and the outer protective skin 25 can be applied to the seventh embodiment of the present invention, and thus, a detailed description thereof is not necessary.

In the eighteenth embodiment of the present invention, the supporting structure includes a supporting frame 20 and an outer protective skin 25, the outer protective skin 25 is disposed on the inner side of the insulated pipe 10, and the supporting frame 20 is disposed on the inner side of the outer protective skin 25. In this embodiment, optionally, the supporting structure further includes an inner protective skin 24, and the inner protective skin 24 is disposed on the inner side of the insulated pipe 10.

Note that, in the above seventh to eighteenth embodiments, in the case where the support structure includes the inner protective skin 24 and the outer protective skin 25, it is possible to make: the heat preservation body 10 is the edge the integral type body that the length direction of heat preservation body 10 extended, perhaps, heat preservation body 10 includes a plurality of sub-bodys 11 that the length direction of heat preservation body 10 set gradually. As in the eighth, ninth, eleventh, fourteenth and sixteenth embodiments of the present invention, as shown in fig. 17, 18 and 21, the heat insulating pipe 10 includes a plurality of sub-pipes 11 sequentially arranged in a length direction of the heat insulating pipe 10, and optionally, the plurality of sub-pipes 11 are arranged in close proximity; in the tenth, twelfth, fifteenth and seventeenth embodiments of the present invention, as shown in fig. 19 and 22, the heat insulating pipe 10 is a one-piece pipe extending in the longitudinal direction of the heat insulating pipe 10.

For another example, in the nineteenth embodiment of the present invention, the supporting structure may include a plurality of supporting plates (e.g., two supporting plates arranged in a crisscross manner) arranged in a cross manner, the supporting plates extend along the length direction of the heat insulating pipe 10, the supporting structure is arranged in the heat insulating pipe 10, and both long side edges of the supporting plates abut against/are connected to the inner wall surface of the heat insulating pipe 10.

In addition, it should be noted that, in order to make the fresh air duct 100 have better performance, the fresh air duct 100 can also satisfy at least one of the following characteristics:

1) the wall surface of the fresh air duct 100 is smooth, and if the fresh air duct is a corrugated duct, the threads are uniform.

2) When the fresh air pipe 100 is bent for 180 degrees, the bending radius is 1.5-2.5 times of the pipe diameter.

3) The wall surface of the fresh air pipe 100 should be an arc section, so that the fresh air pipe is not obviously shrunken and has no sharp corner.

4) The inside of the fresh air pipe 100 was inflated with air at 0.3Mpa for 2 minutes without breakage and leakage.

In addition, it should be noted that the technical solutions in the above embodiments may be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should be considered to be absent and not to be within the protection scope of the present invention.

The invention also provides a fresh air module which is provided with a fresh air duct and comprises the fresh air pipe, and the fresh air pipe is arranged at the air inlet of the fresh air duct.

Specifically, the new trend module is including locating the new trend interface of the air intake department in new trend wind channel, the new trend pipe is connected in this new trend interface.

Optionally, the fresh air module includes the fresh air casing that has the fresh air wind channel and locates the fresh air wind wheel in the fresh air wind channel, the fresh air casing is located to the fresh air interface.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a fresh air pipe for the air conditioner, its characterized in that, fresh air pipe includes the heat preservation body, the structure reinforcing setting is made to the heat preservation body.

2. The fresh air duct of claim 1, wherein the structural reinforcement arrangement comprises the fresh air duct further comprising a support structure disposed on a wall of the thermal insulating tubular body for supporting the thermal insulating tubular body.

3. The fresh air duct of claim 2, wherein said support structure comprises a support frame.

4. The fresh air duct of claim 3, wherein said support framework is at least partially disposed within a wall of said insulated duct body.

5. The fresh air duct according to claim 4, wherein the support frame is provided between an inner wall surface and an outer wall surface of the heat insulating pipe body; alternatively, the first and second electrodes may be,

6. The fresh air duct of claim 5, wherein the wall of the thermal insulation duct body has a thickness greater than or equal to 3 mm and less than or equal to 8 mm.

7. The fresh air duct according to claim 3, wherein the supporting frame is supported on an inner side of the heat insulating pipe body, or the supporting frame is supported on an outer side of the heat insulating pipe body.

8. The fresh air duct according to claim 7, wherein the support frame is fixedly attached to an inner wall surface of the heat insulating pipe body, or the support frame is fixedly attached to an outer wall surface of the heat insulating pipe body.

9. The ventilation duct of claim 3, wherein the support structure further comprises an inner protective skin disposed on an inner side of the thermal insulation duct body, and the support frame is supported on the inner side of the inner protective skin, or the support frame is at least partially disposed in the skin of the inner protective skin.

10. The fresh air duct of claim 9, wherein the support structure further comprises an outer protective skin disposed on an outer side of the insulated duct body.

11. The ventilation duct of claim 3, wherein the support structure further comprises an outer protective skin disposed on an outer side of the thermal insulation duct body, and the support frame is supported on the outer side of the outer protective skin, or the support frame is at least partially disposed in a skin layer of the outer protective skin.

12. The fresh air duct of claim 11, wherein the support structure further comprises an inner protective skin disposed inside the insulated duct body.

13. The fresh air duct of claim 12, wherein said insulated pipe body is a one-piece pipe body extending along a length of said insulated pipe body; alternatively, the first and second electrodes may be,

14. The fresh air duct of claim 3, wherein the support structure further comprises an inner protective skin, the inner protective skin is disposed on an inner side of the heat-insulating duct body, and the inner protective skin is disposed on an inner side of the support frame; and/or the presence of a gas in the gas,

15. The fresh air duct according to any of claims 10, and 12 to 14, wherein said inner protective skin is bellows-shaped; and/or the presence of a gas in the gas,

the outer protective skin is in a corrugated pipe shape.

16. The fresh air duct of any of claims 10, and 12 to 14, wherein said inner protective skin is a plastic piece; and/or the presence of a gas in the gas,

the outer protective skin is a plastic piece.

17. The fresh air duct of any of claims 10, and 12 to 14, wherein said inner protective skin comprises a PVC skin or a TPU skin; and/or the presence of a gas in the gas,

the outer protective skin comprises a PVC skin or a TPU skin.

18. The fresh air duct according to any of claims 10, and 12 to 14, wherein the inner protective skin has a thickness of less than or equal to 5 mm; and/or the presence of a gas in the gas,

the thickness of the outer protective skin is less than or equal to 5 mm.

19. The fresh air duct according to any of claims 3 to 14, wherein said support framework is a support frame.

20. The fresh air duct of claim 19, wherein the support frame comprises a plurality of axial support ribs extending along a length of the insulated duct body, the plurality of axial support ribs being spaced circumferentially of the insulated duct body.

21. The fresh air duct of claim 20, wherein said support frame further comprises a circumferential connector rib connecting a plurality of said axial support ribs.

22. The fresh air duct according to any of claims 3 to 14, wherein said support frame is a net-like structure or a grid-like structure.

23. The fresh air duct according to any one of claims 3 to 14, wherein the support frame comprises a spiral support rib extending spirally along the length direction of the heat-insulating duct body.

24. The fresh air duct according to any of claims 3 to 14, wherein said support frame is a plastic or metal member; and/or the presence of a gas in the gas,

25. The fresh air duct of claim 2, wherein said support structure comprises:

26. The fresh air duct of claim 1, wherein the structural reinforcement comprises the insulating duct body being formed of a material having a strength greater than 0.003 mpa.

27. The fresh air duct according to any one of claims 1 to 14, further comprising a ratproof member provided in the air inlet duct port or the heat insulating duct body of the heat insulating duct body.

28. The fresh air duct of claim 27, wherein said ratproof member is configured as a ratproof spring, or a ratproof mesh; and/or the presence of a gas in the gas,

29. The fresh air duct according to any one of claims 1 to 14, wherein the heat insulating pipe body is made of a polyethylene foam heat insulating material, a polyurethane foam heat insulating material, a phenolic foam heat insulating material, a polystyrene board, a polystyrene foam heat insulating material, an extruded polystyrene heat insulating board, a ceramic fiber blanket, an aluminum silicate felt, an aluminum oxide, a silicon carbide fiber, an aerogel felt, a glass wool, a rock wool, an expanded perlite, a micro-nano heat insulating material, or a foamed cement.

30. A fresh air module comprising a fresh air duct as claimed in any of claims 1 to 29.

31. An air conditioner characterized in that it comprises a fresh air duct according to any one of claims 1 to 29; alternatively, the air conditioner includes a fresh air module as claimed in claim 30.