CN219913250U

CN219913250U - Heat exchanger assembly and air conditioner indoor unit

Info

Publication number: CN219913250U
Application number: CN202321358913.1U
Authority: CN
Inventors: 曾玲玲; 宋分平; 谢李高; 王剑冬
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-10-27
Anticipated expiration: 2033-05-30

Abstract

The utility model discloses a heat exchanger component and an air conditioner indoor unit, wherein the heat exchanger component comprises: a main heat exchanger, a back tube heat exchanger; the input flow path of the heat exchanger assembly flows through the fourth heat exchange tube of the back tube heat exchanger, the first flow path flows through part of the first heat exchange tubes of the front heat exchanger, the second flow path flows through the rest of the first heat exchange tubes of the front heat exchanger and part of the second heat exchange tubes of the middle heat exchanger, the third flow path flows through part of the second heat exchange tubes of the middle heat exchanger, the fourth flow path flows through the rest of the second heat exchange tubes of the middle heat exchanger and part of the third heat exchange tubes of the rear heat exchanger, the fifth flow path flows through the rest of the third heat exchange tubes of the rear heat exchanger, and when the heat exchanger assembly refrigerates, the refrigerant flows through the input flow path and then simultaneously shunts into the first flow path, the second flow path, the third flow path, the fourth flow path and the fifth flow path. According to the heat exchanger component, the heat exchange efficiency of the heat exchanger component is effectively improved, the energy consumption of the heat exchanger component is reduced, and the energy efficiency of the heat exchanger component is improved.

Description

Heat exchanger assembly and air conditioner indoor unit

Technical Field

The utility model relates to the technical field of air treatment equipment, in particular to a heat exchanger assembly and an air conditioner indoor unit.

Background

The heat exchanger is an important component of the air conditioner, and along with the increasing requirements of the market on the energy efficiency of the air conditioner, the heat exchange flow path of the heat exchanger is more and more required. However, the unreasonable heat exchange flow path of the existing heat exchanger causes unbalanced heat exchange, thereby reducing the energy efficiency of the heat exchanger.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the heat exchanger component, the heat exchange pipeline of the heat exchanger component is more reasonable, the heat exchange efficiency of the heat exchanger component is effectively improved, the energy consumption of the heat exchanger component is reduced, and the energy efficiency of the heat exchanger component is improved.

The utility model also provides an air conditioner indoor unit, which comprises the transmission heat exchanger component.

A heat exchanger assembly according to an embodiment of the present utility model includes: the heat exchanger comprises a main heat exchanger, a middle heat exchanger and a rear heat exchanger, wherein the front heat exchanger, the middle heat exchanger and the rear heat exchanger are sequentially spliced, the front heat exchanger is provided with a first heat exchange tube, the middle heat exchanger is provided with a second heat exchange tube, and the rear heat exchanger is provided with a third heat exchange tube; the back pipe heat exchanger is arranged on the windward side of the main heat exchanger and is provided with a fourth heat exchange pipe; the heat exchange flow path of the heat exchanger assembly comprises an input flow path, a first flow path, a second flow path, a third flow path, a fourth flow path and a fifth flow path, wherein the input flow path flows through the fourth heat exchange tube of the back tube heat exchanger, the first flow path flows through part of the first heat exchange tube of the front heat exchanger, the second flow path flows through the rest of the first heat exchange tube of the front heat exchanger and part of the second heat exchange tube of the middle heat exchanger, the third flow path flows through part of the second heat exchange tube of the middle heat exchanger, the fourth flow path flows through the rest of the second heat exchange tube of the middle heat exchanger and part of the third heat exchange tube of the back heat exchanger, and the fifth flow path flows through the rest of the third heat exchange tube of the back heat exchanger, and when the heat exchanger assembly is cooled, refrigerant flows through the input flow path and then simultaneously branches into the first flow path, the second flow path, the third flow path, the fourth flow path and the fifth flow path.

According to the heat exchanger assembly of the embodiment of the utility model, the main heat exchanger comprises a front heat exchanger, a middle heat exchanger and a rear heat exchanger, the front heat exchanger, the middle heat exchanger and the rear heat exchanger are spliced in sequence, the front heat exchanger is provided with a first heat exchange tube, the middle heat exchanger is provided with a second heat exchange tube, the rear heat exchanger is provided with a third heat exchange tube, the back tube heat exchanger is arranged on the windward side of the main heat exchanger, the back tube heat exchanger is provided with a fourth heat exchange tube, a heat exchange flow path of the heat exchanger assembly comprises an input flow path, a first flow path, a second flow path, a third flow path, a fourth flow path and a fifth flow path, the input flow path flows through the fourth heat exchange tube of the back tube heat exchanger, the first flow path flows through part of the first heat exchange tube of the front heat exchanger, the second flow path flows through the first heat exchange tube of the rest part of the front heat exchanger and the second heat exchange tube of the part of the middle heat exchanger, the third flow path flows through the second heat exchange tube of the part of the middle heat exchanger, the fourth flow path flows through the second heat exchange tube of the rest part of the middle heat exchanger and the third heat exchange tube of the part of the rear heat exchanger, and the fifth flow path flows through the third heat exchange tube of the rest part of the rear heat exchanger. Meanwhile, the refrigerant flowing out through the input flow path pipe is split into a first flow path, a second flow path, a third flow path, a fourth flow path and a fifth flow path, so that the pressure loss in the refrigerant flowing process is effectively reduced, the high heat exchange efficiency and the heat exchange performance of the heat exchanger component are further improved, the design of the flow path of the heat exchanger component is simplified, and the production difficulty of the main heat exchanger is reduced.

In some embodiments of the utility model, the input flow path is connected to the first flow path, the second flow path, the third flow path, the fourth flow path, and the fifth flow path by a distributor.

In some embodiments of the utility model, the first heat exchange tube comprises a first heat exchange tube on a windward side and a first heat exchange tube on a leeward side, the second heat exchange tube comprises a second heat exchange tube on a windward side and a second heat exchange tube on a leeward side, the third heat exchange tube comprises a third heat exchange tube on a windward side and a third heat exchange tube on a leeward side, the front heat exchanger comprises a first region comprising a portion of the first heat exchange tube on a windward side and the first heat exchange tube on a leeward side, the second region comprising the remaining portion of the first heat exchange tube on a windward side, the middle heat exchanger comprises a third region comprising a portion of the second heat exchange tube on a windward side and a portion of the second heat exchange tube on a leeward side, the fourth region including a part of the second heat exchange tube on the windward side and the rest of the second heat exchange tube on the leeward side, the fifth region including a part of the second heat exchange tube on the windward side, the rear heat exchanger including a sixth region including a part of the third heat exchange tube on the windward side and a part of the third heat exchange tube on the leeward side, and a seventh region including a part of the third heat exchange tube on the windward side and a rest of the third heat exchange tube on the leeward side, the first flow path passing through the first heat exchange tube of the first region, the second flow path passing through the first heat exchange tube of the second region and the second heat exchange tube of the third region, the third flow path passing through the second heat exchange tube of the fourth region, the fourth flow path passing through the second heat exchange tube of the fifth region and the third heat exchange tube of the sixth region, the fifth flow path flows through the third heat exchange tube of the seventh region.

In some embodiments of the utility model, the first flow path flows from the first heat exchange tube on the windward side of the first zone to the first heat exchange tube on the leeward side of the first zone.

In some embodiments of the present utility model, the second flow path flows sequentially through the first heat exchange tube on the windward side of the second region, the second heat exchange tube on the windward side of the third region, and the second heat exchange tube on the leeward side of the third region.

In some embodiments of the present utility model, the third flow path flows sequentially through the second heat exchange tube on the windward side of the fourth region and the second heat exchange tube on the leeward side of the fourth region.

In some embodiments of the present utility model, the fourth flow path sequentially flows through the second heat exchange tube on the windward side of the fifth region, the third heat exchange tube on the windward side of the sixth region, and the third heat exchange tube on the leeward side of the sixth region.

In some embodiments of the utility model, the fifth flow path flows sequentially through the third heat exchange tube on the windward side of the seventh region and the third heat exchange tube on the leeward side of the seventh region.

In some embodiments of the utility model, the sixth region is located on a side of the seventh region adjacent to the middle heat exchanger, the first heat exchange tube on a windward side of the second region is located on a side of the first heat exchange tube on a windward side of the first region adjacent to the middle heat exchanger, the second heat exchange tube on a windward side of the third region is located on a side of the second heat exchange tube on a windward side of the fifth region adjacent to the front heat exchanger, the second heat exchange tube on a windward side of the fifth region is located between the second heat exchange tube on a windward side of the third region and the second heat exchange tube on a windward side of the fifth region, and the second heat exchange tube on a leeward side of the third region is located on a side of the second heat exchange tube on a leeward side of the fourth region adjacent to the front heat exchanger.

In some embodiments of the utility model, the number of heat exchange tubes in the first, second, third, fourth, and fifth flow paths is the same.

In some embodiments of the utility model, the back tube heat exchanger is disposed on a windward side of the middle heat exchanger.

In some embodiments of the utility model, the aperture of the fourth heat exchange tube is larger than the apertures of the first, second and third heat exchange tubes, which are the same.

In some embodiments of the utility model, the aperture of the fourth heat exchange tube is 7mm, and the apertures of the first heat exchange tube, the second heat exchange tube, and the third heat exchange tube are 5mm.

An indoor unit of an air conditioner according to an embodiment of the present utility model includes any one of the heat exchanger assemblies.

According to the air conditioner indoor unit provided by the embodiment of the utility model, the heat exchanger component is arranged, the main heat exchanger comprises a front heat exchanger, a middle heat exchanger and a rear heat exchanger, the front heat exchanger, the middle heat exchanger and the rear heat exchanger are sequentially spliced, the front heat exchanger is provided with a first heat exchange tube, the middle heat exchanger is provided with a second heat exchange tube, the rear heat exchanger is provided with a third heat exchange tube, the back tube heat exchanger is arranged on the windward side of the main heat exchanger, the back tube heat exchanger is provided with a fourth heat exchange tube, a heat exchange flow path of the heat exchanger component comprises an input flow path, a first flow path, a second flow path, a fourth flow path and a fifth flow path, the input flow path flows through the fourth heat exchange tube of the back tube heat exchanger, the first flow path flows through part of the first heat exchange tube of the front heat exchanger, the second flow path flows through part of the second heat exchange tube of the middle heat exchanger, the third flow path flows through part of the second heat exchange tube of the rest of the middle heat exchanger, the third flow path flows through part of the third heat exchange tube of the rear heat exchanger, the fifth flow path flows through the rest part of the third heat exchange tube of the third heat exchanger, and the rest of the third heat exchange tube of the third flow path flows through the third heat exchanger of the heat exchanger, and the rest of the heat exchange tube of the rest flow path flows through the third heat exchanger, and the heat exchanger and the heat exchange tube flows through the heat exchanger, when the refrigerant flows through the heat exchanger and the air conditioner indoor unit, the heat exchange flow efficiency is reasonably improved, and the heat exchange flow efficiency is improved, and the indoor unit is improved. Meanwhile, the refrigerant flowing out through the input flow path pipe is split into a first flow path, a second flow path, a third flow path, a fourth flow path and a fifth flow path, so that the pressure loss in the flowing process of the refrigerant is effectively reduced, and the high heat exchange efficiency and the heat exchange performance of the air conditioner indoor unit are further 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

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a heat exchanger according to an embodiment of the utility model;

FIG. 2 is a schematic view of a flow path of a refrigerant of a heat exchanger according to an embodiment of the present utility model;

FIG. 3 is a schematic flow path diagram of a refrigerant in an inlet flow path, a first flow path, and an outlet flow path of a heat exchanger according to an embodiment of the present utility model;

FIG. 4 is a schematic flow path diagram of a refrigerant in an inlet flow path, a second flow path, and an outlet flow path of a heat exchanger according to an embodiment of the present utility model;

FIG. 5 is a schematic flow path diagram of a refrigerant in an inlet flow path, a third flow path, and an outlet flow path of a heat exchanger according to an embodiment of the present utility model;

FIG. 6 is a schematic flow path diagram of a refrigerant in an inlet flow path, a fourth flow path, and an outlet flow path of a heat exchanger according to an embodiment of the present utility model;

fig. 7 is a schematic flow path diagram of a refrigerant in an input flow path, a fifth flow path, and an output flow path of the heat exchanger according to an embodiment of the present utility model.

Reference numerals:

100. a heat exchanger assembly;

1. a main heat exchanger; 11. a front heat exchanger; 111. a first heat exchange tube; 112. a first region; 113. a second region; 12. a medium heat exchanger; 121. a second heat exchange tube; 122. a third region; 123. a fourth region; 124. a fifth region; 13. a rear heat exchanger; 131. a third heat exchange tube; 132. a sixth region; 133. a seventh region;

2. a back tube heat exchanger; 21. a fourth heat exchange tube;

3. an input flow path;

4. a first flow path;

5. a second flow path;

6. a third flow path;

7. a fourth flow path;

8. a fifth flow path;

9. and an output flow path.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A heat exchanger assembly 100 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1-7, a heat exchanger assembly 100 according to one embodiment of the present utility model includes a main heat exchanger 1 and a back tube heat exchanger 2.

The main heat exchanger 1 includes a front heat exchanger 11, a middle heat exchanger 12 and a rear heat exchanger 13, the front heat exchanger 11, the middle heat exchanger 12 and the rear heat exchanger 13 are sequentially spliced, the front heat exchanger 11 has a first heat exchange tube 111, the middle heat exchanger 12 has a second heat exchange tube 121, the rear heat exchanger 13 has a third heat exchange tube 131, the back tube heat exchanger 2 is arranged on the windward side of the main heat exchanger 1, and the back tube heat exchanger 2 has a fourth heat exchange tube 21. It will be appreciated that the main heat exchanger 1 has a windward side and a leeward side, the leeward side being downstream of the windward side and the windward side being upstream of the leeward side in the direction of airflow flow. Thus, by providing the back tube heat exchanger 2 on the windward side where the airflow flows faster, the heat exchanging capacity of the back tube heat exchanger 2 can be increased, thereby improving the heat exchanging energy efficiency of the heat exchanger assembly 100.

The heat exchange flow path of the heat exchanger assembly 100 includes an input flow path 3, a first flow path 4, a second flow path 5, a third flow path 6, a fourth flow path 7, and a fifth flow path 8, the input flow path 3 flows through the fourth heat exchange tube 21 of the back tube heat exchanger 2, the first flow path 4 flows through a portion of the first heat exchange tube 111 of the front heat exchanger 11, the second flow path 5 flows through the remaining portion of the first heat exchange tube 111 of the front heat exchanger 11 and a portion of the second heat exchange tube 121 of the middle heat exchanger 12, the third flow path 6 flows through a portion of the second heat exchange tube 121 of the middle heat exchanger 12, the fourth flow path 7 flows through the remaining portion of the second heat exchange tube 121 of the middle heat exchanger 12 and a portion of the third heat exchange tube 131 of the back heat exchanger 13, and the fifth flow path 8 flows through the remaining portion of the third heat exchange tube 131 of the back tube heat exchanger 13, and when the heat exchanger assembly 100 is cooled, the refrigerant flows through the input flow path 3 and then simultaneously splits into the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8.

It can be appreciated that, since the back tube heat exchanger 2 is disposed on the windward side of the main heat exchanger 1, when the heat exchanger assembly 100 is refrigerating, the refrigerant flows from the back tube heat exchanger 2 to the main heat exchanger 1, thereby improving the heat exchange energy efficiency of the heat exchanger assembly 100. Specifically, the refrigerant flows into the input flow path 3 of the back tube heat exchanger 2 at first, and the refrigerant flowing out of the input flow path 3 is split into the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7 and the fifth flow path 8 at the same time, so that the heat exchange pipeline of the heat exchanger assembly 100 is more reasonable, thereby effectively improving the heat exchange efficiency of the heat exchanger assembly 100, reducing the energy consumption of the heat exchanger assembly 100 and improving the energy efficiency of the heat exchanger assembly 100. Meanwhile, the refrigerant flowing out through the pipe of the input flow path 3 is split into a first flow path 4, a second flow path 5, a third flow path 6, a fourth flow path 7 and a fifth flow path 8, so that the pressure loss in the refrigerant flowing process is effectively reduced, the high heat exchange efficiency and the heat exchange performance of the heat exchanger assembly 100 are further improved, the flow path design of the heat exchanger assembly 100 is simplified, and the production difficulty of the main heat exchanger 1 is reduced.

Further, the flow path of the heat exchanger unit 100 further includes an output flow path 9, and when the heat exchanger unit 100 is cooling, the refrigerants flowing out of the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8 are merged and then flow out through the output flow path 9.

When the heat exchanger unit 100 heats, the refrigerant first flows into the output flow path 9, and flows from the output flow path 9 to the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8 at the same time, and the refrigerant flowing out of the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8 merges and then flows out through the input flow path 3.

Meanwhile, the fourth heat exchange tube 21 of the back tube heat exchanger 2 participates in heat exchange during refrigeration of the heat exchanger assembly 100, and becomes an extension section of a supercooling section during heating of the heat exchanger assembly 100, so that energy efficiency is further improved.

Further, a wind deflector is also bridged between the windward sides of the middle heat exchanger 12 and the rear heat exchanger 13; for example, but not limited to, two ends of the wind shield are respectively attached to the middle heat exchanger 12 and the rear heat exchanger 13 through sponge, so that the tightness of the contact part between the wind shield and the heat exchanger is ensured while the wind shield is connected with the heat exchanger, and meanwhile, the sponge attaching mode is also beneficial to the disassembly of the wind shield when a user needs to maintain or replace the heat exchanger assembly 100; of course, in other embodiments, the wind deflector may be mounted to the middle heat exchanger 12 and the rear heat exchanger 13 by screw locking, and the design is not limited thereto. In addition, if there is a larger gap between the front heat exchanger 11 and the middle heat exchanger 12, a wind guard may be added between the two to avoid air leakage of the heat exchanger assembly 100.

When the heat exchanger assembly 100 is applied to an air conditioning indoor unit, the air conditioning indoor unit comprises a shell, a wind wheel and the heat exchanger assembly 100. Wherein, the casing has air intake and air outlet, and the air intake sets up in the upside of casing, and the air outlet sets up in the downside of casing, and the wind wheel is established in the casing, and heat exchanger assembly 100 is established in the casing and is located the air inlet side of wind wheel. It will be appreciated that the wind wheel drives airflow from the air inlet to the air outlet, and the heat exchanger assembly 100 is arranged upstream of the wind wheel, so that the side of the main heat exchanger 1 away from the wind wheel is the windward side, and the side of the main heat exchanger 1 close to the wind wheel is the leeward side. When the air conditioner indoor unit works, the motor drives the wind wheel to rotate, under the action of the wind wheel, the driving airflow flows from the air inlet to the air outlet, the airflow exchanges heat with the heat exchanger assembly 100 after entering the air inlet, and the airflow after heat exchange flows to the air outlet under the action of the wind wheel, so that the airflow exchanges heat with the air sucked by the wind wheel, and the refrigerating or heating effect of the air conditioner indoor unit is realized.

Meanwhile, due to space limitation, the length of the middle heat exchanger 12 is longer than that of the rear heat exchanger 13 and longer than that of the front heat exchanger 11, the first flow path 4 flows through a part of the first heat exchange tubes 111 of the front heat exchanger 11, the second flow path 5 flows through the rest of the first heat exchange tubes 111 of the front heat exchanger 11 and a part of the second heat exchange tubes 121 of the middle heat exchanger 12, the third flow path 6 flows through a part of the second heat exchange tubes 121 of the middle heat exchanger 12, the fourth flow path 7 flows through the rest of the second heat exchange tubes 121 of the middle heat exchanger 12 and a part of the third heat exchange tubes 131 of the rear heat exchanger 13, and the fifth flow path 8 flows through the rest of the third heat exchange tubes 131 of the rear heat exchanger 13, so that heat exchange uniformity of the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7 and the fifth flow path 8 is ensured as much as possible, and heat exchange efficiency of the heat exchanger assembly 100 is further improved.

It should be noted that, the indoor unit of the air conditioner may be an indoor unit of a wall-mounted split air conditioner or an indoor unit of another air conditioner, and the wind wheel may be another wind wheel such as a cross-flow wind wheel or an axial-flow wind wheel.

According to the heat exchanger assembly 100 of the embodiment of the utility model, the main heat exchanger 1 comprises a front heat exchanger 11, a middle heat exchanger 12 and a rear heat exchanger 13, the front heat exchanger 11, the middle heat exchanger 12 and the rear heat exchanger 13 are sequentially spliced, the front heat exchanger 11 is provided with a first heat exchange tube 111, the middle heat exchanger 12 is provided with a second heat exchange tube 121, the rear heat exchanger 13 is provided with a third heat exchange tube 131, the back heat exchanger 2 is arranged on the windward side of the main heat exchanger 1, the back heat exchanger 2 is provided with a fourth heat exchange tube 21, a heat exchange flow path of the heat exchanger assembly 100 comprises an input flow path 3, a first flow path 4, a second flow path 5, a third flow path 6, a fourth flow path 7 and a fifth flow path 8, the input flow path 3 flows through the fourth heat exchange tube 21 of the back heat exchanger 2, the first flow path 4 flows through part of the first heat exchange tube 111 of the front heat exchanger 11, the second flow path 5 flows through the rest part of the first heat exchange tube 111 of the front heat exchanger 11 and part of the second heat exchange tube 121 of the middle heat exchanger 12, the third flow path 6 flows through part of the second heat exchange tube 121 of the middle heat exchanger 12, the fourth flow path 7 flows through the rest of the second heat exchange tube 12, the rest of the fourth flow path 7 flows through the second heat exchange tube 121 and the rest of the second heat exchange tube 121 and flows through the third heat exchange tube 131 of the second heat exchanger 100, and the rest of the heat exchange tube 6 flows through the heat exchange tube 1, and the rest of the heat exchange flow paths of the heat exchanger heat exchange assembly is reasonably flows through the heat exchange assembly 100, and the heat exchange flow efficiency is improved, and the heat exchange efficiency is improved, and the refrigerant is improved, and the heat exchange efficiency is improved, and the refrigerant is cooled by the heat exchange efficiency is cooled by the heat exchange assembly 100. Meanwhile, the refrigerant flowing out through the pipe of the input flow path 3 is split into a first flow path 4, a second flow path 5, a third flow path 6, a fourth flow path 7 and a fifth flow path 8, so that the pressure loss in the flowing process of the refrigerant is effectively reduced, the heat exchange efficiency of the main heat exchanger 1 is increased under the condition that the length of the main heat exchanger 1 is unchanged, the high heat exchange efficiency and the heat exchange performance of the heat exchanger assembly 100 are further improved, the heat exchanger assembly 100 is small in size under the same energy efficiency, and the installation space required by the heat exchanger assembly 100 is reduced.

In some embodiments of the present utility model, as shown in fig. 1, the aperture of the fourth heat exchange tube 21 is larger than the apertures of the first heat exchange tube 111, the second heat exchange tube 121, and the third heat exchange tube 131, and the apertures of the first heat exchange tube 111, the second heat exchange tube 121, and the third heat exchange tube 131 are the same. It can be appreciated that the heat exchange tube with a small tube diameter can reduce the material consumption of the heat exchange tube, so as to remarkably reduce the overall cost of the heat exchanger assembly 100, but when the refrigerant passes through the heat exchange tube with a small tube diameter, the heat exchange resistance is large, the pressure loss is large, the circulation of the refrigerant is not facilitated, and the cost of the heat exchanger assembly 100 and the circulating flow efficiency of the refrigerant need to be comprehensively considered. Meanwhile, during refrigeration, the refrigerant flows into the small-diameter pipeline after flowing through the large-diameter pipeline, the energy efficiency is higher than that of the refrigerant flowing through the large-diameter pipeline after flowing through the small-diameter pipeline, the pipe diameter of the refrigerant is gradually reduced in the process of changing the refrigerant from a gas state to a liquid state, and the contact heat exchange area of the refrigerant and the heat exchange pipe wall surface is increased; and during heating, the refrigerant flows through the small-diameter pipeline and then flows through the large-diameter pipeline, so that the energy efficiency is higher than that of the refrigerant flowing through the large-diameter pipeline and then flows through the small-diameter pipeline.

Therefore, by providing the fourth heat exchange tube 21 in the back tube heat exchanger 2 with a larger aperture than the first heat exchange tube 111 in the front heat exchanger 11, the second heat exchange tube 121 in the middle heat exchanger 12, and the third heat exchange tube 131 in the rear heat exchanger 13, the production cost of the heat exchanger assembly 100 can be reduced while ensuring better heat exchange efficiency of the heat exchanger assembly 100. Meanwhile, the cost of the heat exchanger assembly 100 is reduced by the same aperture of the first heat exchange tube 111, the second heat exchange tube 121, and the third heat exchange tube 131.

In some embodiments of the present utility model, the aperture of the fourth heat exchange tube 21 is 7mm, and the apertures of the first heat exchange tube 111, the second heat exchange tube 121, and the third heat exchange tube 131 are 5mm. It can be understood that the heat exchange tubes with the tube diameter of 7mm and the tube diameter of 5mm are all widely used heat exchange tubes in the prior art, so that the heat exchange tubes with the tube diameters of the two specifications are beneficial to reducing the acquisition difficulty of the heat exchange tubes, and the manufacturing cost of the heat exchanger assembly 100 can be reduced while the heat exchange efficiency of the heat exchanger assembly 100 is ensured.

In some embodiments of the present utility model, the input flow path 3 is connected to the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8 through a distributor. This makes it possible to divide the refrigerant flowing into the input flow path 3 into three paths through the distributor, and the three paths flow into the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8, respectively.

In some embodiments of the present utility model, as shown in fig. 2 to 7, the first heat exchange tube 111 includes a first heat exchange tube 111 on the windward side and a first heat exchange tube 111 on the leeward side, the second heat exchange tube 121 includes a second heat exchange tube 121 on the windward side and a second heat exchange tube 121 on the leeward side, the third heat exchange tube 131 includes a third heat exchange tube 131 on the windward side and a third heat exchange tube 131 on the leeward side, the front heat exchanger 11 includes a first region 112 and a second region 113, the first region 112 includes a part of the first heat exchange tube 111 on the windward side and a part of the first heat exchange tube 111 on the leeward side, the second region 113 includes a rest of the first heat exchange tube 111 on the windward side, the middle heat exchanger 12 includes a third region 122, a fourth region 123 and a fifth region 124, the third region 122 includes a part of the second heat exchange tube 121 on the windward side and a rest of the second heat exchange tube 121 on the leeward side, the fourth region 123 includes a part of the second heat exchange tube 121 on the windward side and a rest of the heat exchange tube 121 on the windward side, the fifth region 124 includes a part of the windward side and a rest of the heat exchange tube 131 on the windward side, the windward side includes a rest of the seventh heat exchange tube 131 and a rest of the heat exchange tube 132 includes a part of the windward side and a rest of the third heat exchange tube 131 and a rest of the windward side and a rest of the heat exchange tube 132 includes a rest of the windward side and a rest of the heat exchange tube 132, the rest of the third region includes the windward side and a rest of the heat exchanger is 132, and a rest of the windward side and a rest of the heat has a rest of the windward and a rest of the heat and has been.

Thus, by dividing the front heat exchanger 11 back into two regions, the middle heat exchanger 12 into three regions, and the rear heat exchanger 13 into two regions, the arrangement of the front heat exchanger 11 of the first flow path 4, the front heat exchanger 11 and the middle heat exchanger 12 of the second flow path 5, the third flow path 6, the middle heat exchanger 12 of the fourth flow path 7, the middle heat exchanger 12 and the rear heat exchanger 13, and the fifth flow path 8 and the rear heat exchanger 13 is facilitated.

The first flow path 4 flows through the first heat exchange tube 111 of the first region 112, the second flow path 5 flows through the first heat exchange tube 111 of the second region 113 and the second heat exchange tube 121 of the third region 122, the third flow path 6 flows through the second heat exchange tube 121 of the fourth region 123, the fourth flow path 7 flows through the second heat exchange tube 121 of the fifth region 124 and the third heat exchange tube 131 of the sixth region 132, and the fifth flow path 8 flows through the third heat exchange tube 131 of the seventh region 133. By this arrangement, the heat exchange efficiency of the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8 is improved, and the flow rate and the pressure loss of the branch path are reduced, so that the heat exchange performance of the heat exchange unit is improved as a whole.

Further, the front heat exchanger 11 has two rows of heat exchange tubes, namely, a first heat exchange tube 111 of a row near the windward side and a first heat exchange tube 111 of a row near the leeward side, and the middle heat exchanger 12 has two rows of heat exchange tubes, namely, a second heat exchange tube 121 of a row near the windward side and a second heat exchange tube 121 of a row near the leeward side, and the rear heat exchanger 13 has two rows of heat exchange tubes, namely, a third heat exchange tube 131 of a row near the windward side and a third heat exchange tube 131 of a row near the leeward side. Thereby, the front heat exchanger 11 is conveniently divided into two regions, the middle heat exchanger 12 is conveniently divided into three regions, the rear heat exchanger 13 is conveniently divided into two regions, and the arrangement of the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7 and the fifth flow path 8 is conveniently performed, and at the same time, the energy efficiency of the heat exchanger assembly 100 can be improved.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the first flow path 4 flows from the first heat exchange tube 111 on the windward side of the first region 112 to the first heat exchange tube 111 on the leeward side of the first region 112.

It will be appreciated that depending on the arrangement of the wind farm, the airflow on the windward side will flow faster and the airflow on the leeward side will flow relatively slower, and the heat exchange efficiency of the heat exchanger assembly 100 will be better when the temperature difference between the refrigerant and the airflow is greater where the airflow flows faster than where the airflow flows slower. Thus, following the flow of refrigerant from the portion of the heat exchanger assembly 100 closer to the windward side to the portion of the heat exchanger assembly 100 farther from the leeward side can make the heat exchange of the heat exchanger assembly 100 more energy efficient.

By this arrangement, the first flow path 4 needs to flow out all the first heat exchange tubes 111 on the windward side of the first region 112 of the front heat exchanger 11, and then flows to the first heat exchange tubes 111 on the leeward side of the first region 112 of the front heat exchanger 11, so that the heat exchange efficiency of the first flow path 4 is improved, and the energy efficiency of the heat exchanger assembly 100 is further improved.

In some embodiments of the present utility model, as shown in fig. 2 and 4, the second flow path 5 sequentially flows through the first heat exchange tube 111 on the windward side of the second region 113, the second heat exchange tube 121 on the windward side of the third region 122, and the second heat exchange tube 121 on the leeward side of the third region 122. Thus, by this arrangement, the second flow path 5 needs to flow out of all the first heat exchange tubes 111 on the windward side of the second region 113 of the front heat exchanger 11 and all the second heat exchange tubes 121 on the windward side of the third region 122 of the middle heat exchanger 12 before flowing to the second heat exchange tubes 121 on the leeward side of the third region 122 of the middle heat exchanger 12, so that the heat exchange efficiency of the second flow path 5 is improved, and the energy efficiency of the heat exchanger assembly 100 is further improved.

In some embodiments of the present utility model, as shown in fig. 2 and 5, the third flow path 6 sequentially flows through the second heat exchange tube 121 on the windward side of the fourth region 123 and the second heat exchange tube 121 on the leeward side of the fourth region 123. Thus, by this arrangement, the third flow path 6 needs to flow out all the second heat exchange tubes 121 on the windward side of the fourth region 123 of the middle heat exchanger 12, and then flows to the second heat exchange tubes 121 on the leeward side of the fourth region 123 of the middle heat exchanger 12, so that the heat exchange efficiency of the third flow path 6 is improved, and the energy efficiency of the heat exchanger assembly 100 is further improved.

In some embodiments of the present utility model, as shown in fig. 2 and 6, the fourth flow path 7 sequentially flows through the second heat exchange tube 121 on the windward side of the fifth region 124, the third heat exchange tube 131 on the windward side of the sixth region 132, and the third heat exchange tube 131 on the leeward side of the sixth region 132. Thus, by this arrangement, the fourth flow path 7 needs to flow out of all the second heat exchange tubes 121 on the windward side of the fifth region 124 of the intermediate heat exchanger 12 and all the third heat exchange tubes 131 on the windward side of the sixth region 132 of the rear heat exchanger 13 before flowing to the third heat exchange tubes 131 on the leeward side of the sixth region 132 of the rear heat exchanger 13, so that the heat exchange efficiency of the fourth flow path 7 is improved, and the energy efficiency of the heat exchanger assembly 100 is further improved.

In some embodiments of the present utility model, as shown in fig. 2 and 7, the fifth flow path 8 sequentially flows through the third heat exchange tube 131 on the windward side of the seventh region 133 and the third heat exchange tube 131 on the leeward side of the seventh region 133. By this arrangement, the fifth flow path 8 needs to flow out all the third heat exchange tubes 131 on the windward side of the sixth region 132 of the rear heat exchanger 13, and then flows to the third heat exchange tubes 131 on the leeward side of the sixth region 132 of the rear heat exchanger 13, so that the heat exchange efficiency of the fifth flow path 8 is improved, and the energy efficiency of the heat exchanger assembly 100 is further improved.

In some embodiments of the present utility model, as shown in fig. 2 to 7, the sixth region 132 is located at a side of the seventh region 133 near the middle heat exchanger 12, the first heat exchange tube 111 of the windward side of the second region 113 is located at a side of the first heat exchange tube 111 of the windward side of the first region 112 near the middle heat exchanger 12, the second heat exchange tube 121 of the windward side of the third region 122 is located at a side of the second heat exchange tube 121 of the windward side of the fifth region 124 near the front heat exchanger 11, the second heat exchange tube 121 of the windward side of the fifth region 124 is located between the second heat exchange tube 121 of the windward side of the third region 122 and the second heat exchange tube 121 of the windward side of the fifth region 124 along the length direction of the middle heat exchanger 12, and the second heat exchange tube 121 of the leeward side of the third region 122 is located at a side of the second heat exchange tube 121 of the leeward side of the fourth region 123 near the front heat exchanger 11.

It can be appreciated that, since the second flow path 5 flows through the first heat exchange tube 111 of the second region 113 and the second heat exchange tube 121 of the third region 122, the third flow path 6 flows through the second heat exchange tube 121 of the fourth region 123, and the fourth flow path 7 flows through the second heat exchange tube 121 of the fifth region 124 and the third heat exchange tube 131 of the sixth region 132, by such arrangement, the arrangement of the second flow path 5, the third flow path 6 and the fourth flow path 7 in the intermediate heat exchanger 12 and the rear heat exchanger 13 is simplified, the arrangement of the second flow path 5, the third flow path 6 and the fourth flow path 7 is facilitated, and the loss of the refrigerant is reduced, and the energy consumption of the heat exchanger assembly 100 is reduced.

Meanwhile, by dividing the first region 112 and the second region 113 of the front heat exchanger 11, dividing the third region 122, the fourth region 123 and the fifth region 124 of the middle heat exchanger 12, and dividing the sixth region 132 and the seventh region 133 of the rear heat exchanger 13, while ensuring the uniformity of heat exchange of the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7 and the fifth flow path 8, the first flow path 4 is ensured to flow first through the first heat exchange tube 111 on the windward side of the first region 112 of the front heat exchanger 11, the second flow path 5 is ensured to flow first through the first heat exchange tube 111 on the windward side of the second region 113 of the front heat exchanger 11, the third flow path 6 is ensured to flow first through the second heat exchange tube 121 on the windward side of the third region 122 of the middle heat exchanger 12, the fourth flow path 7 is ensured to flow first through the third heat exchange tube 131 on the windward side of the sixth region 132 of the rear heat exchanger 13, so that when the input flow path 3 is split simultaneously, the efficiency of the heat exchange tube assembly 100 is further improved.

In some embodiments of the present utility model, as shown in fig. 1-7, the number of heat exchange tubes in the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8 are the same. By this arrangement, the uniformity of heat exchange in the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7, and the fifth flow path 8 is ensured, thereby improving the heat exchange efficiency of the heat exchanger assembly 100 and reducing the energy consumption.

For example, as shown in fig. 1 and 2, there are 5 total first heat exchange tubes 111 participating in heat exchange in the front heat exchanger 11, 8 total second heat exchange tubes 121 participating in heat exchange in the middle heat exchanger 12, and 7 total third heat exchange tubes 131 participating in heat exchange in the rear heat exchanger 13. The first flow path 4 flows through the 4 first heat exchange tubes 111, the second flow path 5 flows through the 1 first heat exchange tube 111 and the 3 second heat exchange tubes 121, the third flow path 6 flows through the 4 second heat exchange tubes 121, the fourth flow path 7 flows through the 1 second heat exchange tube 121 and the 3 third heat exchange tubes 131, and the fifth flow path 8 flows through the 4 third heat exchange tubes 131, so that the number of the heat exchange tubes in the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7 and the fifth flow path 8 is the same.

In some embodiments of the utility model, as shown in fig. 1, the back tube heat exchanger 2 is provided on the windward side of the intermediate heat exchanger 12. It will be appreciated that the airflow velocity near the intermediate heat exchanger 12 is greater than that of the front heat exchanger 11 and the rear heat exchanger 13, and therefore, the back-pipe heat exchanger 2 is disposed on the windward side of the intermediate heat exchanger 12, so that the heat exchange efficiency of the back-pipe heat exchanger 2 is further improved, and the energy efficiency of the heat exchanger assembly 100 is improved. When the heat exchanger assembly 100 is applied to an indoor unit of an air conditioner, the housing has an air inlet and an air outlet, and the middle heat exchanger 12 is closer to the air inlet than the front heat exchanger 11 and the rear heat exchanger 13, so that the airflow velocity near the middle heat exchanger 12 is greater than that of the front heat exchanger 11 and the rear heat exchanger 13.

Further, the support of the back tube heat exchanger 2 and the middle heat exchanger 12 is provided with a connecting plate, and the connecting plate is used for connecting the back tube heat exchanger 2 and the middle heat exchanger 12, so that the connection reliability of the back tube heat exchanger 2 and the middle heat exchanger 12 is ensured.

The heat exchanger assembly 100 of a specific embodiment of the present utility model is described in detail below with reference to the drawings, it being understood that the following description is illustrative only and is not to be construed as limiting the utility model.

The heat exchanger assembly 100 comprises a main heat exchanger 1 and a back tube heat exchanger 2, the main heat exchanger 1 comprises a front heat exchanger 11, a middle heat exchanger 12 and a back heat exchanger 13, the front heat exchanger 11, the middle heat exchanger 12 and the back heat exchanger 13 are spliced in sequence, the front heat exchanger 11 is provided with a first heat exchange tube 111, the middle heat exchanger 12 is provided with a second heat exchange tube 121, the back heat exchanger 13 is provided with a third heat exchange tube 131, the back tube heat exchanger 2 is arranged on the windward side of the main heat exchanger 1, and the back tube heat exchanger 2 is provided with a fourth heat exchange tube 21.

The heat exchange flow path of the heat exchanger assembly 100 comprises an input flow path 3, a first flow path 4, a second flow path 5, a third flow path 6, a fourth flow path 7 and a fifth flow path 8, wherein the input flow path 3 flows through the fourth heat exchange tube 21 of the back tube heat exchanger 2, the first flow path 4 flows through part of the first heat exchange tube 111 of the front heat exchanger 11, the second flow path 5 flows through the rest of the first heat exchange tube 111 of the front heat exchanger 11 and part of the second heat exchange tube 121 of the middle heat exchanger 12, the third flow path 6 flows through part of the second heat exchange tube 121 of the middle heat exchanger 12, the fourth flow path 7 flows through the rest of the second heat exchange tube 121 of the middle heat exchanger 12 and part of the third heat exchange tube 131 of the back heat exchanger 13, and the fifth flow path 8 flows through the rest of the third heat exchange tube 131 of the back tube heat exchanger 13, and when the heat exchanger assembly 100 is cooled, the refrigerant flows through the input flow path 3 and then flows into the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7 and the fifth flow path 8 at the same time, so that the heat exchange pipelines of the heat exchanger assembly 100 are more reasonable, thereby effectively improving the heat exchange efficiency of the heat exchanger assembly 100, and the energy consumption of the heat exchanger assembly 100 is improved.

The first heat exchange tube 111 includes a first heat exchange tube 111 on the windward side and a first heat exchange tube 111 on the leeward side, the second heat exchange tube 121 includes a second heat exchange tube 121 on the windward side and a second heat exchange tube 121 on the leeward side, the third heat exchange tube 131 includes a third heat exchange tube 131 on the windward side and a third heat exchange tube 131 on the leeward side, the front heat exchanger 11 includes a first region 112 and a second region 113, the first region 112 includes a part of the first heat exchange tube 111 on the windward side and a first heat exchange tube 111 on the leeward side, the second region 113 includes a remaining part of the first heat exchange tube 111 on the windward side, the middle heat exchanger 12 includes a third region 122, a fourth region 123 and a fifth region 124, the third region 122 includes a part of the second heat exchange tube 121 on the windward side and a remaining part of the second heat exchange tube 121 on the leeward side, the fifth region 124 includes a remaining part of the second heat exchange tube 121 on the windward side, the rear heat exchange tube 13 includes a seventh heat exchange tube 132 and a remaining part of the third heat exchange tube 131 on the leeward side, and a seventh region 133 includes a remaining part of the third heat exchange tube 131 on the windward side and a seventh region 133.

The fourth heat exchange tube 21 has a larger aperture than the first heat exchange tube 111, the second heat exchange tube 121, and the third heat exchange tube 131, and the apertures of the first heat exchange tube 111, the second heat exchange tube 121, and the third heat exchange tube 131 are the same. For example, the fourth heat exchange tube 21 has an aperture of 7mm, and the first heat exchange tube 111, the second heat exchange tube 121, and the third heat exchange tube 131 have an aperture of 5mm. Thereby, the production cost of the heat exchanger assembly 100 can be reduced while ensuring better heat exchange energy efficiency of the heat exchanger assembly 100.

An air conditioner indoor unit according to an embodiment of the present utility model is described below.

An indoor unit of an air conditioner according to an embodiment of the present utility model includes the heat exchanger assembly 100 described above.

The air conditioning indoor unit includes a housing, a wind wheel, and a heat exchanger assembly 100. Wherein, the casing has air intake and air outlet, and the air intake sets up in the upside of casing, and the air outlet sets up in the downside of casing, and the wind wheel is established in the casing, and heat exchanger assembly 100 is established in the casing and is located the air inlet side of wind wheel. It will be appreciated that the wind wheel drives airflow from the air inlet to the air outlet, and the heat exchanger assembly 100 is arranged upstream of the wind wheel, so that the side of the main heat exchanger 1 away from the wind wheel is the windward side, and the side of the main heat exchanger 1 close to the wind wheel is the leeward side. When the air conditioner indoor unit works, the motor drives the wind wheel to rotate, under the action of the wind wheel, the driving airflow flows from the air inlet to the air outlet, the airflow exchanges heat with the heat exchanger assembly 100 after entering the air inlet, and the airflow after heat exchange flows to the air outlet under the action of the wind wheel, so that the airflow exchanges heat with the air sucked by the wind wheel, and the refrigerating or heating effect of the air conditioner indoor unit is realized.

According to the indoor unit of the air conditioner of the embodiment of the utility model, a heat exchanger assembly 100 is arranged, a main heat exchanger 1 comprises a front heat exchanger 11, a middle heat exchanger 12 and a rear heat exchanger 13, the front heat exchanger 11, the middle heat exchanger 12 and the rear heat exchanger 13 are spliced in sequence, the front heat exchanger 11 is provided with a first heat exchange tube 111, the middle heat exchanger 12 is provided with a second heat exchange tube 121, the rear heat exchanger 13 is provided with a third heat exchange tube 131, a back tube heat exchanger 2 is arranged on the windward side of the main heat exchanger 1, the back tube heat exchanger 2 is provided with a fourth heat exchange tube 21, a heat exchange flow path of the heat exchanger assembly 100 comprises an input flow path 3, a first flow path 4, a second flow path 5, a third flow path 6, a fourth flow path 7 and a fifth flow path 8, the input flow path 3 flows through the fourth heat exchange tube 21 of the back tube heat exchanger 2, the first flow path 4 flows through part of the first heat exchange tube 111 of the front heat exchanger 11, the second flow path 5 flows through the rest of the first heat exchange tubes 111 of the front heat exchanger 11 and part of the second heat exchange tubes 121 of the middle heat exchanger 12, the third flow path 6 flows through the rest of the second heat exchange tubes 121 of the middle heat exchanger 12 and part of the third heat exchange tubes 131 of the rear heat exchanger 13, the fourth flow path 7 flows through the rest of the second heat exchange tubes 121 of the middle heat exchanger 12, and the fifth flow path 8 flows through the rest of the third heat exchange tubes 131 of the rear heat exchanger 13, and when the heat exchanger assembly 100 cools, the refrigerant flows through the input flow path 3 and then simultaneously shunts into the first flow path 4, the second flow path 5, the third flow path 6, the fourth flow path 7 and the fifth flow path 8, so that the heat exchange pipeline of the heat exchanger assembly 100 is more reasonable, the heat exchange efficiency of the heat exchanger assembly 100 is effectively improved, the energy consumption of the air conditioner indoor unit is reduced, and the energy efficiency of the air conditioner indoor unit is improved. Meanwhile, the refrigerant flowing out through the pipe of the input flow path 3 is split into a first flow path 4, a second flow path 5, a third flow path 6, a fourth flow path 7 and a fifth flow path 8, so that the pressure loss in the flowing process of the refrigerant is effectively reduced, and the high heat exchange efficiency and the heat exchange performance of the air conditioner indoor unit are further improved.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims

1. A heat exchanger assembly, comprising:

the heat exchanger comprises a main heat exchanger, a middle heat exchanger and a rear heat exchanger, wherein the front heat exchanger, the middle heat exchanger and the rear heat exchanger are sequentially spliced, the front heat exchanger is provided with a first heat exchange tube, the middle heat exchanger is provided with a second heat exchange tube, and the rear heat exchanger is provided with a third heat exchange tube;

The back pipe heat exchanger is arranged on the windward side of the main heat exchanger and is provided with a fourth heat exchange pipe;

the heat exchange flow path of the heat exchanger assembly comprises an input flow path, a first flow path, a second flow path, a third flow path, a fourth flow path and a fifth flow path, wherein the input flow path flows through the fourth heat exchange tube of the back tube heat exchanger, the first flow path flows through part of the first heat exchange tube of the front heat exchanger, the second flow path flows through the rest of the first heat exchange tube of the front heat exchanger and part of the second heat exchange tube of the middle heat exchanger, the third flow path flows through part of the second heat exchange tube of the middle heat exchanger, the fourth flow path flows through the rest of the second heat exchange tube of the middle heat exchanger and part of the third heat exchange tube of the back heat exchanger, and the fifth flow path flows through the rest of the third heat exchange tube of the back heat exchanger, and when the heat exchanger assembly is cooled, refrigerant flows through the input flow path and then simultaneously branches into the first flow path, the second flow path, the third flow path, the fourth flow path and the fifth flow path.

2. The heat exchanger assembly of claim 1, wherein the input flow path is connected to the first flow path, the second flow path, the third flow path, the fourth flow path, and the fifth flow path by a distributor.

3. The heat exchanger assembly of claim 1, wherein the first heat exchange tube comprises the first heat exchange tube on a windward side and the first heat exchange tube on a leeward side, the second heat exchange tube comprises the second heat exchange tube on a windward side and the second heat exchange tube on a leeward side, the third heat exchange tube comprises the third heat exchange tube on a windward side and the third heat exchange tube on a leeward side,

the front heat exchanger includes a first region including a part of the first heat exchange tube on the windward side and a part of the first heat exchange tube on the leeward side, a second region including the rest of the first heat exchange tube on the windward side, a third region including the part of the second heat exchange tube on the windward side and the rest of the second heat exchange tube on the leeward side, a fourth region including the part of the second heat exchange tube on the windward side and the rest of the second heat exchange tube on the leeward side, a fifth region including the rest of the second heat exchange tube on the windward side, a sixth region including the rest of the third heat exchange tube on the windward side and the rest of the third heat exchange tube on the leeward side, a seventh region including the rest of the third heat exchange tube on the windward side and the rest of the third heat exchange tube on the leeward side,

The first flow path flows through the first heat exchange tube of the first region, the second flow path flows through the first heat exchange tube of the second region and the second heat exchange tube of the third region, the third flow path flows through the second heat exchange tube of the fourth region, the fourth flow path flows through the second heat exchange tube of the fifth region and the third heat exchange tube of the sixth region, and the fifth flow path flows through the third heat exchange tube of the seventh region.

4. A heat exchanger assembly according to claim 3, wherein the first flow path flows from the first heat exchange tube on the windward side of the first zone to the first heat exchange tube on the leeward side of the first zone.

5. A heat exchanger assembly according to claim 3, wherein the second flow path flows sequentially through the first heat exchange tube on the windward side of the second zone, the second heat exchange tube on the windward side of the third zone, and the second heat exchange tube on the leeward side of the third zone.

6. A heat exchanger assembly according to claim 3, wherein the third flow path flows sequentially through the second heat exchange tubes on the windward side of the fourth zone and the second heat exchange tubes on the leeward side of the fourth zone.

7. A heat exchanger assembly according to claim 3, wherein the fourth flow path flows sequentially through the second heat exchange tube on the windward side of the fifth zone, the third heat exchange tube on the windward side of the sixth zone, and the third heat exchange tube on the leeward side of the sixth zone.

8. A heat exchanger assembly according to claim 3, wherein the fifth flow path flows sequentially through the third heat exchange tube on the windward side of the seventh zone and the third heat exchange tube on the leeward side of the seventh zone.

9. A heat exchanger assembly according to claim 3 wherein the sixth zone is located on a side of the seventh zone adjacent the intermediate heat exchanger, the first heat exchange tube on the windward side of the second zone is located on a side of the first heat exchange tube on the windward side of the first zone adjacent the intermediate heat exchanger,

the second heat exchange tube on the windward side of the third region is located on one side of the second heat exchange tube on the windward side of the fifth region, which is close to the front heat exchanger, along the length direction of the middle heat exchanger, the second heat exchange tube on the windward side of the fifth region is located between the second heat exchange tube on the windward side of the third region and the second heat exchange tube on the windward side of the fifth region, and the second heat exchange tube on the leeward side of the third region is located on one side of the second heat exchange tube on the leeward side of the fourth region, which is close to the front heat exchanger.

10. The heat exchanger assembly of claim 1, wherein the number of heat exchange tubes in the first, second, third, fourth, and fifth flow paths is the same.

11. The heat exchanger assembly of claim 1, wherein the back tube heat exchanger is disposed on a windward side of the intermediate heat exchanger.

12. The heat exchanger assembly of claim 1, wherein the fourth heat exchange tube has a larger aperture than the first, second, and third heat exchange tubes, the apertures of the first, second, and third heat exchange tubes being the same.

13. The heat exchanger assembly of claim 1, wherein the fourth heat exchange tube has an aperture of 7mm and the first, second and third heat exchange tubes have an aperture of 5mm.

14. An air conditioning indoor unit comprising a heat exchanger assembly according to any one of claims 1-13.