CN218495317U

CN218495317U - Air pipe assembly and air conditioning system

Info

Publication number: CN218495317U
Application number: CN202222522490.4U
Authority: CN
Inventors: 崔文娟; 王飞; 蒋骏; 丁爽; 祖佳红; 刘福亚
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-02-17
Anticipated expiration: 2032-09-22

Abstract

The application relates to the technical field of refrigeration equipment, and discloses a tuber pipe subassembly, includes: the air inlet side pipe body is larger than the air outlet side pipe body in cross section size; the multistage heat exchanger group is arranged in the tube body and comprises first to N heat exchangers which are connected with each other; the first heat exchangers to the N heat exchangers are sequentially arranged in the pipe body along the airflow flowing direction, and the cross sections of the pipe body at the positions of at least two heat exchangers are different in size; wherein N is an integer greater than or equal to 2. The utility model provides a tuber pipe subassembly reduces along with the cross sectional dimension of body after the air current gets into the body, and the air current increases at the speed of the heat exchanger of the less department of body cross sectional dimension. Therefore, the heat exchange effect is accelerated, and the heat exchange efficiency is improved. The application also discloses an air conditioning system, which comprises the air pipe assembly.

Description

Air pipe assembly and air conditioning system

Technical Field

The application relates to the technical field of refrigeration equipment, for example to a tuber pipe subassembly and air conditioning system.

Background

The air conditioner is the main equipment used for cooling and dehumidifying in summer for houses in damp and hot areas, the traditional air conditioner adopts a freezing and dehumidifying mode, and the temperature of the treated air and other humidity is cooled to saturation and then is cooled and dehumidified. The room air conditioner based on temperature and humidity coupling processing takes room temperature as a control parameter. When the equipment sensible heat ratio of the air conditioner is greater than the indoor sensible heat ratio, the relative humidity of indoor air is higher, at the moment, people usually adopt the air conditioner temperature to obtain a more comfortable warm and humid environment, and the mode causes the sharp increase of the power consumption and the great reduction of the refrigeration energy efficiency.

Aiming at the technical problem, the related technology provides a multi-stage evaporation temperature and humidity separately-controlled air conditioning system, which can realize the independent treatment of indoor temperature and humidity and can adapt to different indoor sensible heat ratio conditions.

However, in the application process, the related art is found to have the defects that: in the multi-stage evaporation temperature and humidity separately-controlled air conditioning system, the multi-stage evaporators are arranged side by side, and the heat exchange performance of the rear heat exchanger is lower, so that the heat exchange efficiency of the multi-stage evaporation temperature and humidity separately-controlled air conditioner is lower.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air pipe assembly and an air conditioning system, and aims to solve the problem that the heat exchange efficiency of a multi-stage evaporation temperature and humidity separately-controlled air conditioner is low due to the fact that the heat exchange performance of a rear heat exchanger is low.

The embodiment of the present disclosure provides an air duct assembly, including: the air inlet side pipe body is larger than the air outlet side pipe body in cross section size; the multistage heat exchanger group is arranged in the tube body and comprises first to N heat exchangers which are connected with each other; the first heat exchangers to the N heat exchangers are sequentially arranged in the pipe body along the airflow flowing direction, and the cross sections of the pipe body at the positions of at least two heat exchangers are different in size; wherein N is an integer greater than or equal to 2.

Optionally, the first heat exchanger is attached to the inner wall of the pipe body.

Optionally, the pipe body comprises: the air inlet is arranged at one end of the first air inlet section; one end of the variable cross-section is communicated with the other end of the first air inlet section, the cross-section size of the variable cross-section is reduced along the flowing direction of air flow in the pipe body, the distance between the variable cross-section and the air inlet is smaller than the distance between the variable cross-section and the air outlet, so that the cross-sectional size of the air inlet side pipe body is larger than that of the air outlet side pipe body; the air outlet is arranged at one end of the first air outlet section, and the other end of the first air outlet section is communicated with the other end of the variable cross-section; wherein the first heat exchanger is positioned in the first air inlet section.

Optionally, the cross-sectional sizes of the first air inlet sections are equal along the flowing direction of the air flow in the pipe body; and/or the cross-sectional sizes of the first air outlet sections are equal along the flowing direction of the airflow in the pipe body, and the Nth heat exchanger is positioned in the first air outlet section.

Optionally, a gap exists between the first heat exchanger and the inner wall of the pipe body, and the gap communicates the air outlet and the air inlet.

Optionally, the tubular body comprises: the air inlet is arranged at one end of the second air inlet section, and the cross section of the second air inlet section is reduced along the flowing direction of airflow in the second air inlet section; the air outlet is arranged at one end of the second air outlet section, and the other end of the second air outlet section is communicated with the other end of the second air inlet section; wherein the first heat exchanger is positioned in the second air inlet section.

Optionally, along a flowing direction of the airflow in the pipe, the cross-sectional dimensions of the second air outlet section are equal, and the nth heat exchanger is located in the second air outlet section.

Optionally, the air duct assembly further comprises: and the stirring piece is arranged at the communication position of the second air inlet section and the second air outlet section or in the second air outlet section.

Optionally, the second to nth heat exchangers are attached to the inner wall of the pipe body.

In some embodiments, the air conditioning system includes the air duct assembly described above.

The utility model provides a cross sectional dimension of body air inlet side body of tuber pipe subassembly is greater than the cross sectional dimension of air outlet side body, and first to N heat exchanger in the body is arranged along the air current flow direction in proper order, just, at least two the heat exchanger position department the cross sectional dimension of body is different. As the cross-sectional size of the tube body decreases after the gas stream enters the tube body, the velocity of the gas stream increases through the heat exchanger where the cross-sectional size of the tube body is smaller. Therefore, the heat exchange effect is accelerated, and the heat exchange efficiency is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic cross-sectional view of an air duct assembly provided by an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional structural view of one air duct assembly provided in the case that the multistage heat exchanger bank comprises four-stage heat exchangers according to the embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of another air duct assembly provided by an embodiment of the present disclosure;

FIG. 4 is a cross-sectional schematic view of another air duct assembly provided by embodiments of the present disclosure.

Reference numerals are as follows:

1. the air conditioner comprises a pipe body, 11, an air inlet, 12, an air outlet, 13, a first air inlet section, 14, a variable cross section, 15, a first air outlet section, 21, a second air inlet section, 22, a second air outlet section, 3, a multi-stage heat exchanger group, 31, a first heat exchanger, 32, a second heat exchanger, 33, a third heat exchanger, 34, a fourth heat exchanger, 4, a stirring piece, 5 and a gap.

Detailed Description

So that the manner in which the features and advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged as appropriate for the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure may be understood as specific cases by those of ordinary skill in the art.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more, unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. E.g., a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 1, an embodiment of the present disclosure provides an air duct assembly, including: a tube body 1 and a multistage heat exchanger group 3.

The two ends of the tube body 1 are respectively an air inlet 11 and an air outlet 12. The cross-sectional dimension of the pipe body 1 at the air inlet 11 side is larger than that of the pipe body 1 at the air outlet 12 side.

The multistage heat exchanger group 3 is arranged in the tube body 1. The multistage heat exchanger group 3 includes first to N heat exchangers connected. The first to N heat exchangers are sequentially arranged in the pipe body 1 along the airflow flowing direction, and the cross sections of the pipe body 1 at the positions of at least two heat exchangers are different in size; wherein N is an integer greater than or equal to 2.

The cross-sectional dimension of the pipe body 1 at the 11 side of the air inlet 11 of the pipe body 1 of the air pipe assembly provided by the embodiment of the disclosure is larger than that of the pipe body 1 at the 12 side of the air outlet, the first to N heat exchangers in the pipe body 1 are sequentially arranged along the flowing direction of the air flow, and the cross-sectional dimensions of the pipe bodies 1 at the positions of at least two heat exchangers are different. Thus, as the cross-sectional size of the tubular body 1 decreases after the airflow enters the tubular body 1, the velocity of the airflow increases as it passes through the heat exchanger where the cross-sectional size of the tubular body 1 is smaller. Therefore, the heat exchange effect is accelerated, and the heat exchange efficiency is improved.

Optionally, the first heat exchanger 31 is attached to the inner wall of the pipe body 1.

The first heat exchanger 31 is attached to the inner wall of the tube body 1, so that the airflow enters the tube body 1 from the air inlet 11. The air flow flowing in the air enters the air inlet 11, and the cross-sectional size of the air flow is reduced, so that the speed of the air flow is increased, and thus, the heat exchange between the air flow and the first heat exchanger is accelerated. The air flow continues to flow inside the tubular body 1 after having exchanged heat with the first heat exchanger.

Optionally, the pipe 1 includes a first air inlet section 13, a variable cross-section 14 and a first air outlet section 15.

One end of the first air inlet section 13 is provided with an air inlet 11; a first heat exchanger 31 is provided in the first air intake section 13.

One end of the variable cross-section 14 is communicated with the other end of the first air inlet section 13, the cross-sectional dimension of the variable cross-section 14 is reduced along the flowing direction of the air flow in the tube body 1, and the distance between the variable cross-section 14 and the air inlet 11 is smaller than the distance between the variable cross-section 14 and the air outlet 12, so that the cross-sectional dimension of the tube body 1 on the side of the air inlet 11 is larger than the cross-sectional dimension of the tube body 1 on the side of the air outlet 12.

One end of the first air outlet section 15 is provided with an air outlet 12, and the other end of the first air outlet section 15 is communicated with the other end of the variable cross-section 14.

One end of the variable cross-section 14 is communicated with the first air inlet section 13, and the other end is communicated with the first air outlet section 15. The cross-sectional dimension of the section 14 that varies in the direction of flow of the gas stream inside the tubular body 1 decreases. In this way, in the case where the air flow enters the variable cross-section 14 having a reduced cross-sectional size, the flow velocity of the air flow is increased. Therefore, the heat exchange effect of the airflow and the rear heat exchanger is accelerated. And furthermore, the heat exchange efficiency of the multistage evaporation temperature and humidity separate control air conditioner is improved.

Alternatively, the cross-sectional dimensions of the first air inlet sections 13 are equal along the flowing direction of the air flow in the pipe body 1; and/or, along the flowing direction of the air flow in the pipe body 1, the section size of the first air outlet section 15 is equal, and the Nth heat exchanger is positioned in the first air outlet section 15.

When the cross-sectional dimensions are equal, the flow speed of the airflow is unchanged, but because the cross-sectional dimension of the first air inlet section 13 is greater than the cross-sectional dimension of the first air outlet section 15, the flow speed of the airflow passing through the variable cross-sectional section 14 and the first air outlet section 15 is greater than the flow speed of the airflow in the first air inlet section 13. Therefore, the heat exchange speed of the airflow and the rear heat exchanger can be increased, and the heat exchange efficiency is improved. Optionally, the second to nth heat exchangers are attached to the inner wall of the pipe body 1.

In this way, the airflow is discharged from the air outlet 12 after being totally connected with the second to nth heat exchangers. The air flow loss can be reduced, and the heat exchange effect is ensured.

In this embodiment, the first heat exchanger is located in the first air intake section 13 and is attached to the inner wall of the pipe body 1. The Nth heat exchanger is located in the first air outlet section 15. The air current gets into in the body 1 by air intake 11, because first heat exchanger laminates with body 1 inner wall mutually, the air current is whole to contact with first heat exchanger, moves along the air current flow direction after carrying out the heat exchange, discharges in following body 1 by air outlet 12 behind the one or more heat exchanger in proper order. Because the cross-sectional dimension of first air inlet section 13 is greater than first air-out section cross-sectional dimension for equal flow air flow rate is accelerated in the variable cross-sectional section 14 that cross-sectional dimension is less gradually, and then has accelerated the speed of air when the second to Nth heat exchanger flows through, reaches the effect of accelerating heat transfer speed, improvement heat exchange efficiency.

In this embodiment, as an implementable mode, the pipe body 1 is an integrated structure, and includes a first air inlet section 13, a variable cross-section 14 and a first air outlet section 15 which are connected in sequence. By adopting the structure, no leakage exists in the air flow movement process, and the appearance is attractive.

As another practical way, the first air intake section 13 and the variable cross-section 14 are connected by a connecting member, and the first air intake section 13 and the variable cross-section 14 are also connected by a connecting member. Meanwhile, a sleeve is arranged at the joint of the first air inlet section 13 and the variable cross-section 14, and a sleeve is also arranged at the joint of the variable cross-section 14 and the first air outlet section 15. And, set up seal structure at the both ends of sleeve pipe, increase sealing performance, prevent revealing the axle. The structure is convenient to assemble and disassemble, and maintenance work is convenient.

In this embodiment, the tube body 1 is an integrally formed structure.

In this embodiment, as an implementable manner, the tube body 1 is made of a glass-magnesium composite board, is formed by combining two layers of high-strength inorganic materials and one layer of heat insulation material, and has the characteristics of light weight, high strength, no combustion, sound insulation and capability of being used in a humid environment. Meanwhile, the device has the advantages of simplicity in installation and light weight.

As another practical way, the tube body 1 may be made of metal, such as iron plate or galvanized iron plate, and the galvanized iron plate has the characteristics of thin wall, light weight, flexible processing, good deformation resistance, corrosion resistance and no peculiar smell.

In this embodiment, the material of body 1 is for glass magnesium composite sheet, and its heat preservation, syllable-dividing, the succinct characteristic of installation more receive user's favor, are favorable to popularization, the use of product.

Optionally, the thickness of the pipe body 1 is 25mm to 30mm.

Referring to fig. 1, in the embodiment of the present disclosure, the multistage heat exchanger group 3 includes first to N heat exchangers connected; wherein N is equal to 2.

The first heat exchanger 31 to the second heat exchanger 32 are arranged in the pipe body 1 in sequence along the flow direction of the air flow, and the cross-sectional dimensions of the pipe body 1 at the positions of the first heat exchanger 31 and the second heat exchanger 32 are different.

As shown in fig. 1, the first heat exchanger 31 is disposed in the first air intake section 13 and attached to the inner wall of the pipe body 1. The second heat exchanger 32 is disposed in the first air outlet section 15 and attached to the inner wall of the pipe body 1.

In this embodiment, the air flow enters the tube body 1 from the air inlet 11, and after passing through the first heat exchanger 31, the air flow continues to move along the air flow direction, and the air flow speed is increased through the variable cross-section 14. Then, the heat exchange is rapidly carried out with the second heat exchanger, and the heat is discharged out of the tube body 1 through the air outlet 12.

Referring to fig. 2, the duct assembly provided in the embodiment of the present disclosure is different from the above-mentioned duct assembly in that the multistage heat exchanger group 3 includes first to N heat exchangers connected to each other. The first heat exchanger to the N heat exchangers are sequentially arranged in the pipe body 1 along the airflow direction, and the cross sections of the pipe body 1 at the positions of at least two heat exchangers are different in size; wherein N is a positive number greater than 2. The remaining characteristics of the air duct assembly provided by the embodiment of the disclosure are the same as those of the air duct assembly.

In this embodiment, N =4 is taken. The first heat exchanger 31 is arranged in the first air inlet section 13 and attached to the inner wall of the pipe body 1. The second heat exchanger 32, the third heat exchanger 33 and the fourth heat exchanger 34 are all arranged in the first air outlet section 15.

Optionally, the second heat exchanger 32, the third heat exchanger 33 and the fourth heat exchanger 34 are respectively attached to the inner wall of the tube body 1.

In this embodiment, the air flow enters the tube body 1 from the air inlet 11, and after passing through the first heat exchanger 31, the air flow continues to move along the air flow direction, and the air flow speed is increased through the variable cross-section 14. Then, the second heat exchanger 32, the third heat exchanger 33, and the fourth heat exchanger 34 exchange heat rapidly in sequence, and then the heat is discharged out of the pipe body 1 through the air outlet 12.

Referring to fig. 3, another duct assembly provided in the embodiment of the present disclosure includes a duct body 1 and a multi-stage heat exchanger set 3.

The multistage heat exchanger group 3 is arranged in the tube body 1. The multistage heat exchanger group 3 includes first to N heat exchangers connected. The first heat exchanger to the N heat exchangers are sequentially arranged in the pipe body 1 along the airflow direction, and the cross sections of the pipe body 1 at the positions of at least two heat exchangers are different in size; wherein N is an integer greater than or equal to 2.

A gap 5 exists between the first heat exchanger 31 and the inner wall of the tube body 1, and the gap 5 is communicated with the air outlet 12 and the air inlet 11.

Thus, after passing through the air inlet, the air flow can enter the tube body 1 from the two directions of the gap and the heat exchange with the first heat exchanger. Due to the temperature change Δ T of the air flow after the heat exchange between the air flow and the first heat exchanger, the temperature of the air flow entering from the gap is the same as the temperature of the air flow outside the tube body 1. The air flows in the two directions are mixed in the pipe body 1, so that the variation of the temperature of the air flow is reduced, and the temperature difference of heat exchange with the rear heat exchanger is increased. Therefore, the heat exchange speed of the mixed air flow and the rear heat exchanger is further accelerated, and the heat exchange efficiency can be further improved.

The cross-sectional dimension of the pipe body at the 11 side of the air inlet of the pipe body 1 is larger than that of the pipe body at the 12 side of the air outlet, the first heat exchangers to the N heat exchangers in the pipe body 1 are sequentially arranged along the airflow flowing direction, and the cross-sectional dimensions of the pipe body 1 at the positions of at least two heat exchangers are different. Meanwhile, a gap 5 exists between the first heat exchanger and the inner wall of the tube body 1, and the gap 5 is communicated with the air inlet 11 and the air outlet 12, so that air can enter the tube body 1 from two directions. Wind enters the pipe body 1 from the gap and also enters the pipe body along the airflow flowing direction. The wind entering from the two directions is mixed and then exchanges heat with other heat exchangers. Like this, at the air flow in-process, along with the cross sectional dimension of body 1 reduces, the air flow rate of equal flow accelerates for the air is increasing at the speed of the heat exchanger of the less department of body 1 cross sectional dimension of flowing through, has accelerated the heat transfer effect, has improved heat exchange efficiency.

Optionally, the pipe 1 includes a second air inlet section 21 and a second air outlet section 22.

One end of the second air inlet section 21 is provided with an air inlet 11, and the cross section of the second air inlet section 21 is reduced along the flowing direction of the air flow in the second air inlet section 21. A first heat exchanger 31 is provided in the second air intake section 21.

One end of the second air outlet section 22 is provided with an air outlet 12, and the other end of the second air outlet section 22 is communicated with the other end of the second air inlet section 21.

Optionally, along the flowing direction of the air flow in the duct body 1, the cross-sectional dimensions of the second air outlet section 22 are equal, and the nth heat exchanger is located in the second air outlet section 22.

In the present embodiment, N =2 is selected. The first heat exchanger 31 is arranged in the second air outlet section 21, and a gap exists between the first heat exchanger and the inner wall of the pipe body 1. The second heat exchanger is arranged in the second air outlet section 22 and is attached to the inner wall of the pipe body 1. The air current gets into in the body 1 from the air intake, lies in that the first heat exchanger moves along second air inlet section 21 after the heat transfer, because second air inlet section 21 cross-sectional dimension diminishes for the velocity of flow of wind for the velocity of heat transfer of wind and second heat exchanger 32 improves.

Optionally, the tube body 1 is of an integrally formed structure.

Referring to fig. 4, the air duct assembly includes a duct body 1, a multistage heat exchanger set 3, and a stirring member 4.

The two ends of the tube body 1 are respectively an air inlet 11 and an air outlet 12. The air inlet 12 is disposed at one end of the second air inlet section 21, and the air outlet 12 is disposed at one end of the second air outlet section 22. The other end of the second air outlet section 22 is communicated with the other end of the first air inlet section 21. The cross-sectional dimension of the pipe body 1 at the air inlet 11 side is larger than that of the pipe body 1 at the air outlet 12 side.

The multistage heat exchanger group 3 is arranged in the pipe body 1. The multistage heat exchanger group 3 includes first to nth heat exchangers connected. The first to Nth heat exchangers are sequentially arranged in the pipe body 1 along the airflow flowing direction, and the cross-sectional sizes of the pipe body 1 at the positions of the at least two heat exchangers are different, wherein N is an integer greater than or equal to 2. A gap exists between the first heat exchanger 31 and the inner wall of the tube body 1, and the gap is communicated with the air inlet 11 and the air outlet 12.

The stirring piece 4 is arranged at the communication position of the second air inlet section 21 and the second air outlet section 22 or in the second air outlet section 22.

By arranging the stirring member 4, the mixing speed of the air flows in two directions can be increased.

A part of the air flow enters the tube body 1 from the gap between the first heat exchanger 31 and the inner wall of the tube body 1 and flows along the air flow direction, and a part of the air flow enters the tube body 1 from the air inlet 11 and flows along the air flow direction after exchanging heat with the first heat exchanger 31. The size of the cross section of the second air inlet section 21 is reduced, so that the flowing speed of the wind is increased, and the heat exchange speed of the wind and the second to Nth heat exchangers is increased.

Meanwhile, because the air flows of the two parts enter the pipe body 1 to be mixed, the difference between the mixed air flow and the surface temperature of the second to the Nth heat exchangers is increased under the stirring and mixing action of the stirring piece 4, so that the heat exchange efficiency of the second to the Nth heat exchangers is improved, and the heat exchange performance is improved.

Alternatively, the stirring element 4 is connected to a drive device, which drives the stirring element 4 in rotation. This is the prior art and will not be described herein.

Optionally, the second to nth heat exchangers are attached to the inner wall of the pipe body 1.

The embodiment of the present disclosure provides an air conditioning system, including the compressor, heat exchange piece and the multistage heat exchanger group 3 that connect gradually, the multistage heat exchanger group 3 is including setting up first to nth heat exchanger in the tuber pipe subassembly, and first to nth heat exchanger arrange in proper order along the air current flow direction in body 1, and the cross sectional dimension of two at least heat exchanger position department body 1 is different, and wherein, N is more than or equal to 2 integer.

In the air conditioning system, a heat exchange part is connected with a multi-stage heat exchanger set through first to Nth branches, and one ends of the first to Nth branches are connected with the heat exchange part. This is the prior art and will not be described herein.

The first to Nth heat exchangers are arranged in the pipe body 1, and airflow sequentially passes through the first to Nth heat exchangers. Because the cross-sectional dimension of the air inlet side pipe body 1 is larger than that of the air outlet side pipe body 1, the flowing speed of the airflow passing through the rear heat exchanger is increased, and therefore the heat exchange efficiency of the airflow and the rear heat exchanger is improved. Therefore, the heat exchange efficiency of the multistage evaporation temperature and humidity separate control air conditioner can be improved.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air duct assembly, comprising:

the air conditioner comprises a pipe body (1), wherein an air inlet (11) and an air outlet (12) are respectively formed in two ends of the pipe body (1), and the cross section size of the pipe body (1) on the air inlet (11) side is larger than that of the pipe body (1) on the air outlet (12) side;

the multistage heat exchanger group (3) is arranged in the pipe body (1), and the multistage heat exchanger group (3) comprises first to N heat exchangers which are connected with each other; the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger are sequentially arranged in the pipe body (1) along the airflow flowing direction, and the cross sections of the pipe body (1) at the positions of the at least two heat exchangers are different in size;

wherein N is an integer greater than or equal to 2.

2. Air duct assembly according to claim 1, characterized in that the first heat exchanger is in abutment with the inner wall of the tubular body (1).

3. The air duct assembly according to claim 1, characterized in that the tubular body (1) comprises:

the air inlet (11) is arranged at one end of the first air inlet section (13);

a variable cross-section (14), one end of the variable cross-section (14) is communicated with the other end of the first air inlet section (13), the cross-sectional dimension of said section (14) decreasing in the direction of the flow of the gas inside said tubular body (1), the distance between the variable cross-section (14) and the air inlet (11) is smaller than the distance between the variable cross-section (14) and the air outlet (12), so that the cross-sectional size of the tube body (1) at the air inlet (11) side is larger than the cross-sectional size of the tube body (1) at the air outlet (12) side;

the air outlet (12) is arranged at one end of the first air outlet section (15), and the other end of the first air outlet section (15) is communicated with the other end of the variable cross-section (14);

wherein the first heat exchanger (31) is located in the first air intake section (13).

4. The air hose assembly of claim 3,

the cross-sectional sizes of the first air inlet sections (13) are equal along the flowing direction of the air flow in the pipe body (1); and/or the presence of a gas in the gas,

along the flowing direction of the air flow in the pipe body (1), the cross-sectional sizes of the first air outlet sections (15) are equal, and the Nth heat exchanger is positioned in the first air outlet section (15).

5. Air duct assembly according to claim 1, characterized in that a gap (5) is present between the first heat exchanger (31) and the inner wall of the tubular body (1), which gap (5) communicates the air outlet opening (12) and the air inlet opening (11).

6. The air duct assembly according to claim 5, characterized in that the tubular body (1) comprises:

the air inlet (11) is arranged at one end of the second air inlet section (21), and the section size of the second air inlet section (21) is reduced along the flowing direction of air flow in the second air inlet section (21);

the air outlet (12) is arranged at one end of the second air outlet section (22), and the other end of the second air outlet section (22) is communicated with the other end of the second air inlet section (21);

wherein the first heat exchanger (31) is positioned in the second air inlet section (21).

7. The air duct assembly according to claim 6, characterized in that the cross-sectional dimensions of the second air outlet section (22) are equal along the direction of the air flow in the duct body (1), and the Nth heat exchanger is located in the second air outlet section (22).

8. The air hose assembly of claim 6, further comprising:

and the stirring piece (4) is arranged at the communication position of the second air inlet section (21) and the second air outlet section (22) or in the second air outlet section (22).

9. The air duct assembly of any of claims 1-8, wherein the second through nth heat exchangers are coupled to an inner wall of the tubular body.

10. An air conditioning system, comprising: an air duct assembly according to any of claims 1-9.