CN217030472U - Fresh air pipe for air treatment equipment and air treatment equipment - Google Patents

Abstract

The utility model discloses a fresh air pipe for air treatment equipment and the air treatment equipment, wherein the fresh air pipe comprises: the pipe comprises a pipe body and a heat-insulating piece, wherein a ventilation channel is limited in a pipe cavity of the pipe body, the heat-insulating piece is connected with the pipe body in an assembling mode, the heat-insulating piece is arranged outside the pipe body, the heat conductivity coefficient of the heat-insulating piece is 0.015W/(m.K) -0.025W/(m.K), the wall thickness t1 of the heat-insulating piece is larger than the wall thickness t0 of the pipe body, and the wall thickness t1 of the heat-insulating piece is 0.5mm-5 mm. According to the fresh air pipe for the air treatment equipment, on the premise of ensuring the heat preservation effect, the ventilation section is larger, the ventilation quantity can be improved, and the heat preservation piece and the pipe body which are assembled and connected are convenient to process respectively, so that the production is facilitated.

Description

Fresh air pipe for air treatment equipment and air treatment equipment

Technical Field

The utility model relates to the technical field of fresh air, in particular to a fresh air pipe for air treatment equipment and the air treatment equipment.

Background

Some air conditioners in the correlation technique possess the new trend function, this kind of air conditioner is introduced the indoor side with the new trend by the new trend module usually, and the new trend module is connected through the fresh air pipe with outdoor, for guaranteeing pleasing to the eye and user's demand, all install in the wall hole with above-mentioned fresh air pipe the refrigerant pipe that will connect indoor set and off-premises station, consider that the wall hole size is less, but the pipe diameter of refrigerant pipe is invariable to the pipe diameter that leads to the fresh air pipe is less, and the fresh air volume is less, and ventilation noise is great.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a fresh air pipe for air treatment equipment, which has larger ventilation quantity and is beneficial to production.

The utility model also provides air treatment equipment with the fresh air pipe.

According to an embodiment of the first aspect of the utility model, the fresh air duct for the air treatment device comprises: a tube body having a lumen defining a ventilation channel; the heat preservation piece, the heat preservation piece with pipe body assembly links to each other, just the heat preservation piece is located outside the pipe body, the coefficient of heat conductivity of heat preservation piece is 0.015W/(m.K) -0.025W/(m.K), the wall thickness t1 of heat preservation piece is greater than the wall thickness t0 of pipe body, the wall thickness t1 of heat preservation piece is 0.5mm-5 mm.

According to the fresh air pipe for the air treatment equipment, provided by the embodiment of the utility model, on the premise of ensuring the heat preservation effect, the ventilation section is larger, the ventilation quantity can be improved, and the heat preservation piece and the pipe body which are assembled and connected are convenient to process respectively, so that the production is facilitated.

In some embodiments, the heat-insulating member is a tubular member and is sleeved outside the tube body.

In some embodiments, there is a fit clearance between the inner wall of the insulator and the outer wall of the pipe body.

In some embodiments, the thermal insulation member is a flexible sheet and is adhered to the outside of the tube body.

In some embodiments, the thermal insulator is an aerogel.

In some embodiments, the fresh air duct further comprises: and the sealing layer is arranged on the outer wall surface of the aerogel part.

In some embodiments, the wall thickness t1 of the thermal insulation member is 0.5mm to 2 mm.

In some embodiments, the tube body includes a tube body and a brace disposed on the tube body.

In some embodiments, the support bars are helically coiled around the tube; alternatively, the support rib includes a plurality of annular ribs arranged at intervals in an axial direction of the pipe body.

In some embodiments, the diameter d of the support rib is larger than the wall thickness t2 of the tube body; and/or the supporting ribs do not exceed the inner wall surface of the pipe body.

In some embodiments, the support ribs are integral with the tube body; and/or, the body is the TPU material just the brace rod is the PVC material.

In some embodiments, the tube body is a plastic tube.

An air treatment device according to an embodiment of the second aspect of the utility model comprises a fresh air duct according to an embodiment of the first aspect of the utility model.

According to the air treatment equipment provided by the embodiment of the utility model, the fresh air pipe in the embodiment of the first aspect is arranged, so that the fresh air performance of the air treatment equipment is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view of a fresh air duct according to one embodiment of the present invention;

FIG. 2 is a cross-sectional view of the fresh air duct shown in FIG. 1;

FIG. 3 is experimental comparison data for two new ventilation ducts;

fig. 4 is a graph corresponding to the data shown in fig. 3, the dotted line representing the air volume and noise curve of the fresh air duct 1, and the solid line representing the air volume and noise curve of the fresh air duct 2;

fig. 5 is a schematic view of an air conditioner according to an embodiment of the present invention;

fig. 6 is a schematic view of the fresh air module and the fresh air duct shown in fig. 5.

Reference numerals are as follows:

an air conditioner 1000;

fresh air duct 100: a tube body 1; a tube body 11; a support rib 12; a ventilation passage 10; a heat-insulating member 2;

a fresh air module 200; an air-conditioning body 300.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

Hereinafter, a fresh air duct 100 for an air treatment apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the fresh air duct 100 includes: the pipe comprises a pipe body 1 and a heat preservation part 2, wherein a ventilation channel 10 is limited by a pipe cavity of the pipe body 1, the heat preservation part 2 is connected with the pipe body 1 in an assembling mode, the heat preservation part 2 is arranged outside the pipe body 1, the heat conductivity coefficient of the heat preservation part 2 is 0.015W/m.K-0.025W/m.K, the wall thickness t1 of the heat preservation part 2 is larger than the wall thickness t0 of the pipe body 1, and the wall thickness t1 of the heat preservation part 2 is 0.5mm-5 mm. From this, heat preservation 2 is under the prerequisite that plays comparatively effectual heat preservation effect, and heat preservation 2's wall thickness t1 can be less to under the prerequisite that fresh air pipe 100 external diameter is fixed and pipe body 1 wall thickness t0 is fixed, effectively improve pipe body 1's internal diameter, increase ventilation channel 10's cross-sectional area promptly, thereby improve pipe body 1's air volume, reduce windage and noise.

In addition, as shown in fig. 1 and fig. 2, since the heat insulating member 2 is assembled and connected with the pipe body 1, that is, the heat insulating member 2 is connected with the pipe body 1 in an assembling manner, it can be understood that the product is composed of a plurality of parts and components, and according to the specified technical requirements, the labor process of joining the parts into the components or joining the parts and the components into the product is called assembling, and therefore, the assembling of the heat insulating member 2 with the pipe body 1 refers to: the heat preservation piece 2 and the pipe body 1 are two separately processed parts and are assembled together. Therefore, the heat insulating member 2 and the pipe body 1 are not an integral piece, for example, they are not integrally processed by injection molding, foaming or other processes, but are separately processed, that is, after being separately processed, they are assembled together, so that the production difficulty and cost can be reduced, and mass production and processing can be realized. Moreover, because heat preservation 2 and pipe body 1 need not receive the restriction of processing technology when processing separately respectively, can select suitable material separately as required respectively for pipe body 1 can have better intensity and rigidity relatively under the prerequisite that thickness is thinner, avoids new tuber pipe 100 to take place bending deformation and influence the problem of the air volume of pipe body 1, and simultaneously, the wall thickness attenuate can be kept the prerequisite of better heat insulating ability to the selected material of heat preservation 2.

It should be noted that the thermal conductivity and the wall thickness of the heat insulating material 2 can be selected according to actual requirements, and for example, the thermal conductivity of the heat insulating material 2 can be 0.015W/m.K, 0.016W/m.K, 0.017W/m.K, 0.018W/m.K, 0.019W/m.K, 0.020W/m.K, 0.021W/m.K, 0.022W/m.K, 0.023W/m.K, 0.024W/m.K, 0.025W/m.K, etc., and for example, the wall thickness t1 of the heat insulating material 2 can be 0.5mm, 0.8mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc.

Therefore, the skilled person can select the corresponding material according to the thermal conductivity and the thickness requirement of the heat preservation member 2. For example, in some embodiments, the thermal insulation member 2 is an aerogel member, that is, the thermal insulation member 2 may be made of aerogel material, so that the thermal conductivity of the thermal insulation member 2 made of aerogel material may be 0.02W/m · K, which is 1 time lower than that of a thermal insulation pipe made of Polyethylene (PE) (the thermal conductivity of PE is 0.04W/m · K), and thus the thickness of the thermal insulation member 2 may be reduced by 50% under the condition of the same thermal insulation performance. On the basis that maintains fresh air pipe 100 and have certain heat preservation characteristic, the inner chamber size of the increase fresh air pipe 100 of very big degree promotes the cross-sectional area that the new trend passes through fresh air pipe 100, reduces because the less windage that brings of fresh air pipe 100's inner chamber size, the effectual new amount of wind that promotes the new trend travelling comfort.

In other words, under the existing wall hole size specification, on the premise of ensuring the refrigerant connecting pipe of the indoor unit and the outdoor unit to pass through, since the cross-sectional area of the inner cavity of the fresh air duct 100 is increased, the fresh air volume can be increased, for example, under the condition of comparable thermal insulation performance, the wall thickness t1 of the aerogel thermal insulation member 2 can be 2mm, while the thickness of the Polyethylene (PE) thermal insulation pipe in the related art is 4mm, thereby showing that the unilateral wall thickness of the fresh air pipe 100 of the heat preservation part 2 made of aerogel can be reduced by 2mm, on the premise of not increasing the overall outer diameter of the fresh air duct 100 and the heat insulating member 2, the diameter of the fresh air duct 100 can be increased by 4mm, for example, for a wall hole diameter of 65mm, the inner diameter of the fresh air duct 100 can be increased from 30mm to 34mm, for a wall hole with the diameter of 100mm, the inner diameter of the fresh air pipe 100 can be increased from 53mm to 57mm, and the fresh air quantity can be increased by more than 20% in the same ratio.

In short, when heat preservation 2 is the aerogel spare, higher heat preservation characteristic has, compare the insulating tube of current Polyethylene (PE) material, the coefficient of heat conductivity reduces 1 time, the wall thickness reduces 50%, on the basis that maintains that fresh air pipe 100 has certain heat preservation characteristic, the internal diameter of fresh air pipe 100 has greatly been increased to the degree, the lumen diameter of pipe body 1 has been increased promptly, thereby promote the cross-sectional area that the new trend passes through fresh air pipe 100, the cross-sectional area of ventilation passageway 10 has been increased promptly, the windage that brings because fresh air pipe 100's internal diameter is less has been reduced, the fresh air volume has been promoted effectively, the new trend travelling comfort has been promoted, the ventilation noise has been reduced.

When the thermal insulation member 2 is an aerogel member, in some embodiments of the present invention, the fresh air duct 100 further includes a sealing layer, and the sealing layer is disposed on an outer wall surface of the aerogel member, so that by disposing the sealing layer on the surface of the aerogel, a problem of powder falling of the aerogel thermal insulation material can be solved, and the thermal insulation performance of the thermal insulation member 2 is ensured. It should be noted that the material of the sealing layer is not limited, and for example, the sealing layer may be a metal layer, such as an aluminum foil.

In some embodiments of the utility model, the wall thickness t1 of the thermal insulation 2 may be 0.5mm to 2 mm. For example, the wall thickness t1 of heat preservation piece 2 can be 0.5mm, 0.7mm, 0.9mm, 1.1mm, 1.3mm, 1.5mm, 1.7mm, 1.9mm, 2mm etc., therefore, the wall thickness t1 of heat preservation piece 2 is thinner, and the heat preservation performance is better, on the basis of maintaining that fresh air pipe 100 has certain heat preservation characteristic, the internal diameter of fresh air pipe 100 has greatly been increased, namely, the lumen diameter of pipe body 1 has been increased, thereby promote the cross-sectional area that the new trend passes through fresh air pipe 100, the windage that brings because fresh air pipe 100's internal diameter is less has been reduced, the new amount of wind has been promoted effectively, the new trend travelling comfort has been promoted, ventilation noise has been reduced.

Particularly, the concrete mode that heat preservation 2 and the assembly of pipe body 1 link to each other is not limited, for example figure 1 and figure 2 show, heat preservation 2 is outside pipe body 1 is located for tubular member and cover, that is to say, wear to establish in heat preservation 2 with pipe body 1, from this, convenient assembling, machining efficiency is high, and heat preservation 2's leakproofness is good, can play the heat preservation effect more effectively. Further, a fit clearance is formed between the inner wall of the heat preservation piece 2 and the outer wall of the pipe body 1. That is to say, the internal diameter of heat preservation 2 is greater than the external diameter of pipe body 1 to be convenient for heat preservation 2 cup joints on to pipe body 1, perhaps wear to establish in pipe body 1 to heat preservation 2 of being convenient for, can avoid causing pipe body 1 or heat preservation 2 to take place to warp moreover, guarantee that heat preservation 2 and pipe body 1 can both keep respective performance. In addition, because a space is formed between the inner wall of the heat preservation piece 2 and the outer wall of the pipe body 1, the gas in the space can further play the roles of heat preservation and sound insulation.

In some embodiments, as shown in fig. 1 and fig. 2, when the thermal insulation member 2 is a tubular member, the cross-sectional shape of the thermal insulation member 2 may match the cross-sectional shape of the tube body 1, so as to facilitate the sleeve connection of the two members, improve the structural compactness of the fresh air duct 100, and avoid unnecessary increase of the wall thickness. For example, both are circular in cross-section, or both are polygonal in cross-section, etc. Further, when the cross section is polygonal, the diameter refers to the equivalent diameter. In addition, when the heat insulating member 2 is a tubular member and is sleeved outside the pipe body 1, the heat insulating member 2 can be fixed to the pipe body 1 at two axial ends thereof, for example, a binding tape can be used for binding.

Of course, the present invention is not limited to this, and the heat insulating member 2 is not limited to a tubular member, for example, in other embodiments, the heat insulating member 2 is a flexible sheet and is adhered to the outside of the pipe body 1. For example, the heat insulating member 2 can be wrapped and adhered on the outer wall surface of the pipe body 1 by glue, double-sided adhesive tape and the like, so that the heat insulating member 2 is convenient to process, the processing cost is low, the heat insulating member 2 and the pipe body 1 can be assembled simply, the structural compactness of the fresh air pipe 100 is improved, and unnecessary increase of the wall thickness is avoided.

Specifically, the shape and the size of flexible lamellar body are not limited, for example can be the rectangle, and its length equals with the axial length of pipe body 1, and the width equals with the girth of pipe body 1, is equivalent to the shape after the axial cutting pipe body 1 lateral wall of pipe body 1 expandes along pipe body 1 to when rolling up flexible lamellar body on pipe body 1, only one piece along the piece of pipe body 1 axial extension, sealed heat preservation effect is better. Of course, the present invention is not limited to this, and the flexible sheet may be a strip-shaped sheet, and is wound around the outer circumferential surface of the tube body 1 along the spiral line, in this case, the abutted seam is a spiral line.

In some embodiments of the present invention, as shown in fig. 1 and 2, the pipe body 1 may include a pipe body 11 and support ribs 12 provided on the pipe body 11. From this, can improve the structural strength and the rigidity of pipe body 1, improve pipe body 1 and warp, lead to ventilation passageway 10 to take place to warp, the cross section diminishes scheduling problem, guarantees the air volume, reduces ventilation windage and ventilation noise. Alternatively, the support ribs 12 are helically wound around the tube 11. Therefore, the processing is convenient, and the supporting effect of the supporting ribs 12 on the pipe body 11 is good. Of course, the present invention is not limited thereto, or alternatively, the support rib 12 may include a plurality of annular ribs arranged at intervals in the axial direction of the pipe body 11, and thus, the support rib 12 may also have a good supporting effect on the pipe body 11.

In some embodiments of the present invention, as shown in fig. 1 and 2, the diameter d of the support rib 12 is greater than the wall thickness t2 of the tube body 11. Therefore, the wall thickness t2 of the pipe body 11 can be made smaller while ensuring sufficient rigidity and strength of the entire pipe body 1, and the cost and weight of the pipe body 11 can be reduced.

In some embodiments of the present invention, as shown in fig. 1 and 2, the supporting ribs 12 do not exceed the inner wall surface of the tube 11, so that the supporting ribs 12 can prevent unnecessary resistance and interference to the ventilation of the inner cavity of the tube 11, and the ventilation volume is large and the ventilation noise is low.

Specifically, as shown in fig. 1 and 2, when the diameter d of the support rib 12 is larger than the wall thickness t2 of the pipe body 11, the support rib 12 extends beyond the outer wall surface of the pipe body 11. When the diameter d of the support rib 12 is smaller than the wall thickness t2 of the tube body 11, the support rib 12 can be completely arranged in the wall surface of the tube body 11, and at this time, the support rib 12 does not exceed the outer wall surface of the tube body 11, so that the overall wall thickness of the tube body 1 can be reduced, the space is saved, and the structure compactness is improved.

In some embodiments of the present invention, as shown in fig. 1 and 2, the support rib 12 and the pipe body 1 may be a single piece, and for example, they may be processed into a single piece by injection molding, so as to improve the reliability of the connection between them.

In some embodiments of the present invention, as shown in fig. 1 and 2, the tube 11 is made of TPU and the support rib 12 is made of PVC. From this, the peculiar smell of the body 11 of TPU material is less, can guarantee the free from peculiar smell that the new trend introduced, and the support intensity of the brace rod 12 of PVC material is better, can guarantee that pipe body 1 has better intensity and rigidity.

In addition, as shown in fig. 1 and fig. 2, when the support rib 12 does not exceed the inner wall surface of the tube body 11, the diameter d of the support rib 12 is greater than the wall thickness t2 of the tube body 11, the support rib 12 and the tube body 1 can be an integral piece, the tube body 11 is made of TPU, and the support rib 12 is made of PVC, under the condition of ensuring that the rigidity and strength of the whole tube body 1 are sufficient, the wall thickness t2 of the tube body 11 is small, the cost and weight of the tube body 11 are reduced, the support rib 12 does not exceed the outer wall surface of the tube body 11, the whole wall thickness of the tube body 1 can be reduced, the space is saved, and the structural compactness is improved

In some embodiments of the utility model, as shown in fig. 1 and 2, the tube body 1 is a plastic tube. Therefore, the pipe body 1 is light in weight, low in cost, good in rigidity and hardness and good in heat preservation. Of course, the present invention is not limited thereto, and the pipe body 1 may also be a metal pipe or the like in other embodiments of the present invention.

Some air conditioners in the correlation technique possess the new trend function, this kind of air conditioner is introduced the indoor side with the new trend by the new trend module usually, and the new trend module is connected through the fresh air pipe with outdoor, for guaranteeing pleasing to the eye and user's demand, all install in the wall hole with above-mentioned fresh air pipe the refrigerant pipe that will connect indoor set and off-premises station, consider that the wall hole size is less, but the pipe diameter of refrigerant pipe is invariable to the pipe diameter that leads to the fresh air pipe is less, and the fresh air volume is less, and ventilation noise is great. In addition, the new tuber pipe among the correlation technique is made by the plastics material, because the difference in temperature of indoor outer environment, form the condensation on the new tuber pipe easily, in order to improve this technical problem, wrap up the Polyethylene (PE) insulating tube of 4mm thickness outside the new tuber pipe of plastics material, in order to play certain heat preservation effect, prevent the new trend through the new tuber pipe because the difference in temperature of indoor outer environment arouses the condensation, drip scheduling problem, because the new tuber pipe of plastics is for maintaining certain intensity, its thickness is thick, lead to under the fixed condition of wall hole diameter, the effective internal diameter of new trend is less, the new trend amount of wind is less.

In order to solve the above technical problems, in some embodiments of the present invention, the fresh air duct 100 includes a duct body 1 and a heat insulating member 2, the heat insulating member 2 is an aerogel material member, the wall thickness is about 2mm, the duct body 1 is a plastic member, and for example, the duct body 11 is made of TPU and a support rib 12 is made of PVC, the support rib 12 is spirally wound on the wall surface of the duct body 11 to provide a certain strength for the duct body 11, so as to prevent the duct body 11 from deforming, and the heat insulating member 2 plays a certain heat insulating role in the fresh air flowing through the duct body 1, so as to prevent the duct body 1 from being condensed due to temperature difference. Moreover, because the heat preservation 2 is the aerogel material spare, and the wall thickness is about 2mm, under the condition of the same heat preservation performance, the thickness of heat preservation 2 can reduce 50%. On the basis that maintains fresh air pipe 100 and have certain heat preservation characteristic, the inner chamber size of the increase fresh air pipe 100 of very big degree promotes the cross-sectional area that the new trend passes through fresh air pipe 100, reduces because the less windage that brings of fresh air pipe 100's inner chamber size, the effectual new amount of wind that promotes the new trend travelling comfort. For example, with reference to fig. 3 and 4, by comparing the fresh air duct 1 using Polyethylene (PE) as the heat preservation pipe with the fresh air duct 2 using an aerogel material as the heat preservation member 2, it can be seen that the air volume of the fresh air duct 2 is significantly increased relative to the fresh air duct 1.

In the following, an air treatment device according to an embodiment of the second aspect of the utility model is described.

As shown in fig. 5 and 6, the air processing apparatus according to the embodiment of the present invention includes a fresh air duct 100 according to the embodiment of the first aspect of the present invention, specifically, the air processing apparatus according to the embodiment of the present invention has a fresh air function, and the ventilation fresh air duct 100 introduces fresh outdoor air. Of course, the utility model is not limited thereto, and in some extended embodiments, the air treatment apparatus may also have other functions, such as a blow-down function, and indoor air is discharged to the outside through the fresh air duct 100.

For example, in some embodiments, as shown in fig. 5 and 6, the air handling device may include a fresh air module 200, the fresh air module 200 including a fresh air blower operable to draw outdoor air through the fresh air duct 100. However, the present invention is not limited thereto, and in some other embodiments, the air processing apparatus may not include a fresh air blower, for example, the air path of the fresh air module 200 may be connected to a working air path of the air processing apparatus, such as a heat exchange air path or a purification air path, and when the working air path generates a negative pressure, the air path of the fresh air module 200 may introduce the outdoor air through the fresh air duct 100.

In addition, it should be noted that the specific type of the air treatment device according to the embodiment of the present invention is not limited, and may be, for example, an air conditioner 1000, a fresh air machine, a purifier, and the like. After the specific type of the air processing device is determined, a person skilled in the art may know the specific setting position of the fresh air module 200, for example, in the embodiment shown in fig. 5 and fig. 6, the air processing device may be a wall-mounted unit in the air conditioner 1000, the wall-mounted unit includes an air conditioner body 300 extending in a transverse direction along a length direction, the fresh air module 200 is located at one transverse end of the air conditioner body 300, and the air conditioner body 300 may include an air supply fan, a heat exchanger, and the like, which is not described herein again. In addition, other configurations and operations are known to those of ordinary skill in the art and will not be described in detail herein, given the particular type of air treatment device according to embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A fresh air duct for an air treatment apparatus, comprising:

a tube body having a lumen defining a ventilation channel;

the heat preservation piece, the heat preservation piece with pipe body assembly links to each other, just the heat preservation piece is located outside the pipe body, the coefficient of heat conductivity of heat preservation piece is 0.015W/(m.K) -0.025W/(m.K), the wall thickness t1 of heat preservation piece is greater than the wall thickness t0 of pipe body, the wall thickness t1 of heat preservation piece is 0.5mm-5 mm.

2. The fresh air duct for an air treatment apparatus as claimed in claim 1, wherein the heat retaining member is a tubular member and is disposed outside the duct body.

3. The fresh air duct for an air treatment device according to claim 2, wherein a fitting clearance is provided between an inner wall of the heat retaining member and an outer wall of the duct body.

4. The fresh air duct for an air treatment device according to claim 1, wherein the heat retaining member is a flexible sheet and is adhered to the outside of the duct body.

5. The fresh air duct for an air treatment device according to claim 1, wherein said insulation is aerogel.

6. The fresh air duct for an air treatment device of claim 5, further comprising: and the sealing layer is arranged on the outer wall surface of the aerogel part.

7. The fresh air duct for an air handling unit of claim 1, wherein the wall thickness t1 of the insulation is 0.5mm to 2 mm.

8. The fresh air duct for an air handling device according to any of claims 1-7, wherein the duct body comprises a duct body and support ribs provided on the duct body.

9. The fresh air duct for an air handling device of claim 8 wherein said support struts are helically wound around said tubular body; alternatively, the support rib comprises a plurality of annular ribs arranged at intervals in the axial direction of the pipe body.

10. The fresh air duct for an air treatment device according to claim 8, wherein the diameter d of the support rib is larger than the wall thickness t2 of the duct body; and/or the supporting ribs do not exceed the inner wall surface of the pipe body.

11. The fresh air duct for an air handling unit of claim 8 wherein the support ribs are integral with the duct body; and/or, the body is the TPU material just the brace rod is the PVC material.

12. The fresh air duct for an air treatment device of claim 1 wherein the duct body is a plastic duct.

13. An air treatment plant, characterized in that it comprises a fresh air duct according to any of claims 1-12.

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