CN220061931U - Heat exchanger assembly and air conditioner indoor unit - Google Patents

Abstract

The utility model discloses a heat exchanger component and an air conditioner indoor unit, wherein the heat exchanger component comprises: the main heat exchanger comprises a front 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; when the heat exchanger component refrigerates, the refrigerant flows from the back pipe heat exchanger to the main heat exchanger, and the refrigerant flowing out of the back pipe heat exchanger flows to the front heat exchanger, the middle heat exchanger and the rear heat exchanger simultaneously in a plurality of flow paths. According to the heat exchanger component, the small-diameter heat exchange tube is good in applicability and high in heat exchange efficiency, and the volume of the heat exchanger component can be relatively reduced on the premise of the same heat exchange capacity, so that the miniaturization of the indoor unit of the air conditioner is facilitated.

Description

Heat exchanger assembly and air conditioner indoor unit

Technical Field

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

Background

Along with the requirements of the market on the energy efficiency of the air conditioner, the length of the evaporator needs to be increased to realize high energy efficiency, and the strict limit of a special area room on the size of an internal machine cannot be met.

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, which ensures that the heat exchange pipe with small pipe diameter has good applicability and high heat exchange efficiency, and can relatively reduce the volume of the heat exchanger component on the premise of the same heat exchange capacity, thereby being beneficial to the miniaturization of the indoor unit of the air conditioner.

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; when the heat exchanger component is used for refrigerating, the refrigerant flows from the back pipe heat exchanger to the main heat exchanger, and the refrigerant flowing from the back pipe heat exchanger flows into the front heat exchanger, the middle heat exchanger and the rear heat exchanger simultaneously in a plurality of flow paths.

According to the heat exchanger assembly provided by the embodiment of the utility model, the main heat exchanger and the back pipe heat exchanger arranged on the windward side of the main heat exchanger are arranged, the main heat exchanger comprises the front heat exchanger, the middle heat exchanger and the back heat exchanger which are sequentially spliced, the front heat exchanger is provided with the first heat exchange pipe, the middle heat exchanger is provided with the second heat exchange pipe, the back heat exchanger is provided with the third heat exchange pipe, the back pipe heat exchanger is provided with the fourth heat exchange pipe, and when the heat exchanger assembly refrigerates, a refrigerant flowing out of the back pipe heat exchanger flows to the front heat exchanger, the middle heat exchanger and the back heat exchanger simultaneously in a plurality of flow paths. Therefore, the small-diameter heat exchange tube has good applicability and high heat exchange efficiency, and can relatively reduce the volume of the heat exchanger assembly on the premise of the same heat exchange capacity, thereby being beneficial to the miniaturization of the indoor unit of the air conditioner.

In some embodiments of the utility model, the flow path of the heat exchanger assembly includes an input flow path through the fourth heat exchange tube of the back tube heat exchanger, a first flow path through the first heat exchange tube of the front heat exchanger and a portion of the second heat exchange tube of the middle heat exchanger, a second flow path through the remaining portion of the second heat exchange tube of the middle heat exchanger, and a third flow path through the third heat exchange tube of the rear heat exchanger, refrigerant being split into the first flow path, the second flow path, and the third flow path simultaneously after flowing through the input flow path when the heat exchanger assembly is being cooled.

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

In some embodiments of the utility model, the intermediate heat exchanger includes a first region and a second region, the first region being located on a side of the second region adjacent to the front heat exchanger, the first flow path passing through the second heat exchange tubes of the first region, the second flow path passing through the second heat exchange tubes of the second region.

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, and the first flow path flows through the second heat exchange tube on the windward side of the middle heat exchanger, the first heat exchange tube on the windward side of the front heat exchanger, the first heat exchange tube on the leeward side of the front heat exchanger, and the second heat exchange tube on the leeward side of the middle heat exchanger in this order.

In some embodiments of the utility model, the second heat exchange tube comprises a windward side second heat exchange tube and a leeward side second heat exchange tube, and the second flow path flows through the windward side second heat exchange tube of the middle heat exchanger and the leeward side second heat exchange tube of the middle heat exchanger in sequence.

In some embodiments of the utility model, the third heat exchange tube comprises a windward side third heat exchange tube and a leeward side third heat exchange tube, the third flow path flowing from the windward side third heat exchange tube to the leeward side third heat exchange tube of the rear heat exchanger.

In some embodiments of the utility model, the number of heat exchange tubes of the first flow path is greater than the number of heat exchange tubes of the third flow path, which is greater than the number of heat exchange tubes of the second flow path.

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

In some embodiments of the utility model, a baffle is provided on the windward side of the junction of the intermediate heat exchanger and the rear heat exchanger.

In some embodiments of the utility model, seals are provided between the baffle and the intermediate heat exchanger and between the baffle and the rear 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 fourth heat exchange tube has an aperture of 7mm and the first, second and third heat exchange tubes have an aperture of 5mm.

The indoor unit of the air conditioner comprises the heat exchanger assembly.

According to the indoor unit of the air conditioner, the heat exchanger assembly is arranged, the main heat exchanger and the back pipe heat exchanger arranged on the windward side of the main heat exchanger are arranged, the main heat exchanger comprises the front heat exchanger, the middle heat exchanger and the back heat exchanger which are sequentially spliced, the front heat exchanger is provided with the first heat exchange pipe, the middle heat exchanger is provided with the second heat exchange pipe, the back heat exchanger is provided with the third heat exchange pipe, the back pipe heat exchanger is provided with the fourth heat exchange pipe, and when the heat exchanger assembly refrigerates, a refrigerant flowing out of the back pipe heat exchanger flows to the front heat exchanger, the middle heat exchanger and the back heat exchanger simultaneously in a plurality of flow paths. Therefore, the small-diameter heat exchange tube has good applicability and high heat exchange efficiency, and can relatively reduce the volume of the heat exchanger assembly on the premise of the same heat exchange capacity, thereby being beneficial to the miniaturization of the indoor unit of the air conditioner.

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 assembly according to an embodiment of the present utility model.

Reference numerals:

10. a heat exchanger assembly;

1. a main heat exchanger; 11. a front heat exchanger; 111. a first heat exchange tube; 12. a medium heat exchanger; 121. a first region; 122. a second region; 123. a second heat exchange tube; 13. a rear heat exchanger; 131. a third heat exchange tube;

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

31. an input flow path; 32. a first flow path; 33. a second flow path; 34. a third flow path; 35. an output flow path;

4. a dispenser; 5. a baffle; 6. an air inlet; 7. and an air outlet.

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 10 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1, a heat exchanger assembly 10 according to an embodiment of the present utility model includes 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 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 123, the rear 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.

It will be appreciated that after the assembly of the indoor unit of the air conditioner is completed, the side facing the user is the front, the side facing the wall is the rear, and the indoor unit of the wall-mounted air conditioner adopts a conventional structure with an air inlet 6 arranged on the upper part and an air outlet 7 arranged on the lower part, i.e. the heat exchanger component 10 is positioned at the upstream of the wind wheel. 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 flow of the air stream. 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 10.

Further, during the refrigeration of the heat exchanger assembly 10, the refrigerant flows from the back tube heat exchanger 2 to the main heat exchanger 1, and the refrigerant flowing out of the back tube heat exchanger 2 flows into the front heat exchanger 11, the middle heat exchanger 12 and the rear heat exchanger 13 simultaneously in a plurality of flow paths. It can be understood that, when the heat exchanger assembly 10 is refrigerating, the refrigerant flows into the fourth heat exchange tube 21 of the windward back tube heat exchanger 2 of the main heat exchanger 1, the refrigerant flowing out of the fourth heat exchange tube 21 flows into the first heat exchange tube 111 of the front heat exchanger 11, the second heat exchange tube 123 of the middle heat exchanger 12 and the third heat exchange tube 131 of the rear heat exchanger 13 simultaneously in a plurality of flow paths, so that the heat exchange pipeline of the heat exchanger assembly 10 is more reasonable, the heat exchange efficiency of the heat exchanger assembly 10 is effectively improved, the energy consumption of the heat exchanger assembly 10 is reduced, and the energy efficiency is improved.

Meanwhile, the refrigerant flowing out through the fourth heat exchange tube 21 flows to the first heat exchange tube 111, the second heat exchange tube 123 and the third heat exchange tube 131 at the same time in a plurality of flow paths, so that the heat exchange efficiency of the main heat exchanger 1 can be increased under the condition that the length of the main heat exchanger 1 is unchanged, the heat exchange efficiency of the heat exchanger assembly 10 is increased, and the heat exchanger assembly 10 is small in size and requires small installation space.

The smaller the diameter of the heat exchange tube, the larger the resistance and the larger the pressure loss in the refrigerant flowing process, the worse the applicability, and the refrigerant flowing out through the fourth heat exchange tube 21 flows to the first heat exchange tube 111, the second heat exchange tube 123 and the third heat exchange tube 131 simultaneously in a plurality of flow paths, so that the pressure loss in the refrigerant flowing process can be effectively reduced, and the applicability of the heat exchange tube with smaller diameter can be improved, thereby reducing the manufacturing cost. In addition, the volume of the heat exchanger assembly 10 can be relatively reduced on the premise of the same heat exchange capacity, thereby being beneficial to the miniaturization of the indoor unit of the air conditioner.

According to the heat exchanger assembly 10 of the embodiment of the utility model, by arranging the main heat exchanger 1 and the back tube heat exchanger 2 arranged on the windward side of the main heat exchanger 1, the main heat exchanger 1 comprises a front heat exchanger 11, a middle heat exchanger 12 and a back heat exchanger 13 which 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 123, the back heat exchanger 13 is provided with a third heat exchange tube 131, the back tube heat exchanger 2 is provided with a fourth heat exchange tube 21, and when the heat exchanger assembly 10 is used for refrigerating, the refrigerant flowing out of the back tube heat exchanger 2 flows to the front heat exchanger 11, the middle heat exchanger 12 and the back heat exchanger 13 simultaneously in a plurality of flow paths. Therefore, the small-diameter heat exchange tube has good applicability and high heat exchange efficiency, and the volume of the heat exchanger assembly 10 can be relatively reduced on the premise of the same heat exchange capacity, thereby being beneficial to the miniaturization of the indoor unit of the air conditioner.

In some embodiments of the present utility model, the flow path of the heat exchanger assembly 10 includes an input flow path 31, a first flow path 32, a second flow path 33, and a third flow path 34, the input flow path 31 flows through the fourth heat exchange tube 21 of the back tube heat exchanger 2, the first flow path 32 flows through the first heat exchange tube 111 of the front heat exchanger 11 and a portion of the second heat exchange tube 123 of the middle heat exchanger 12, the second flow path 33 flows through the remaining portion of the second heat exchange tube 123 of the middle heat exchanger 12, the third flow path 34 flows through the third heat exchange tube 131 of the rear heat exchanger 13, and the refrigerant flows through the input flow path 31 and then simultaneously splits into the first flow path 32, the second flow path 33, and the third flow path 34 when the heat exchanger assembly 10 is cooled.

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 10 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 10. Specifically, the refrigerant flows into the input flow path 31 of the back tube heat exchanger 2 at first, and the refrigerant flowing out of the input flow path 31 is split into the first flow path 32, the second flow path 33 and the third flow path 34 at the same time, so that the heat exchange pipeline of the heat exchanger assembly 10 is more reasonable, thereby effectively improving the heat exchange efficiency of the heat exchanger assembly 10, reducing the energy consumption of the heat exchanger assembly 10 and improving the energy efficiency of the heat exchanger assembly 10. Meanwhile, the refrigerant flowing out through the pipe of the input flow path 31 is split into a first flow path 32, a second flow path 33 and a third flow path 34, 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 10 are further improved, the defect of adopting the heat exchange pipe with a small pipe diameter is further weakened, and the applicability of the heat exchange pipe with a small pipe diameter is improved.

The flow path of the heat exchanger unit 10 further includes an output flow path 35, and when the heat exchanger unit 10 is cooled, the refrigerants flowing out of the first flow path 32, the second flow path 33, and the third flow path 34 are merged and then flow out through the output flow path 35.

When the heat exchanger unit 10 heats, the refrigerant first flows into the output flow path 35, and simultaneously flows from the output flow path 35 to the first flow path 32, the second flow path 33, and the third flow path 34, and the refrigerant flowing out of the first flow path 32, the second flow path 33, and the third flow path 34 merges and flows out through the input flow path 31. 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 10, and becomes an extension section of a supercooling section during heating of the heat exchanger assembly 10, so that the energy efficiency is further improved, the defect of the heat exchange tube with small tube diameter is further weakened, and the applicability of the heat exchange tube with small tube diameter is improved.

In some embodiments of the present utility model, the input flow path 31 is connected to the first flow path 32, the second flow path 33, and the third flow path 34 through the distributor 4. This makes it possible to divide the refrigerant flowing into the input flow path 31 into three paths through the distributor 4, and to flow into the first flow path 32, the second flow path 33, and the third flow path 34, respectively.

In some embodiments of the present utility model, the intermediate heat exchanger 12 includes a first region 121 and a second region 122, the first region 121 being located on a side of the second region 122 near the front heat exchanger 11, the first flow path 32 passing through the second heat exchange tubes 123 of the first region 121, and the second flow path 33 passing through the second heat exchange tubes 123 of the second region 122. Thus, the intermediate heat exchanger 12 is divided into two regions by such an arrangement, facilitating the arrangement of the first flow path 32 and the second flow path 33 in the intermediate heat exchanger 12.

The first flow path 32 flows through the second heat exchange tube 123 of the first region 121 and the first heat exchange tube 111 of the front heat exchanger 11, the first region 121 is located at a side of the second region 122 near the front heat exchanger 11, so that connection between the first heat exchange tube 111 and the second heat exchange tube 123 on the first flow path 32 is facilitated, and the second flow path 33 flows through the second heat exchange tube 123 of the second region 122. Therefore, the heat exchange efficiency of the first flow path 32 and the second flow path 33 is improved by the arrangement, and the flow speed and the pressure loss of the branch path are reduced, so that the heat exchange performance of the heat exchange assembly is integrally improved.

In some embodiments of the present utility model, 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, which facilitates arrangement of the first heat exchange tube 111 in the front heat exchanger 11 and arrangement of the first flow path 32, and the second heat exchange tube 123 includes a second heat exchange tube 123 on the windward side and a second heat exchange tube 123 on the leeward side, which facilitates arrangement of the second heat exchange tube 123 in the middle heat exchanger 12 and arrangement of the first flow path 32 and the second flow path 33, and which can improve energy efficiency of the heat exchanger assembly 10.

Further, the first flow path 32 flows through the second heat exchange tube 123 on the windward side of the middle heat exchanger 12, the first heat exchange tube 111 on the windward side of the front heat exchanger 11, the first heat exchange tube 111 on the leeward side of the front heat exchanger 11, and the second heat exchange tube 123 on the leeward side of the middle heat exchanger 12 in this order.

Thus, by such arrangement, the first flow path 32 needs to flow out of all the second heat exchange tubes 123 on the windward side of the first region 121 of the middle heat exchanger 12 and all the first heat exchange tubes 111 on the windward side of the front heat exchanger 11 before flowing to the first heat exchange tubes 111 on the leeward side of the front heat exchanger 11 and the second heat exchange tubes 123 on the leeward side of the first region 121 of the middle heat exchanger 12 in sequence, thereby improving the heat exchange efficiency of the first flow path 32 and further improving the energy efficiency of the heat exchanger assembly 10. Meanwhile, when the heat exchanger assembly 10 is applied to an indoor unit of an air conditioner, since the middle heat exchanger 12 is close to the air inlet 6 so that the airflow velocity near the middle heat exchanger 12 is greater than that of the front heat exchanger 11, the heat exchange efficiency of the first flow path 32 is further improved by arranging the first flow path 32 to first flow through the second heat exchange pipe 123 on the windward side of the first region 121 of the middle heat exchanger 12, and further improving the heat exchange efficiency of the heat exchanger assembly 10.

In some embodiments of the present utility model, the second heat exchange tube 123 includes a windward side second heat exchange tube 123 and a leeward side second heat exchange tube 123, and the second flow path 33 sequentially flows through the windward side second heat exchange tube 123 of the intermediate heat exchanger 12 and the leeward side second heat exchange tube 123 of the intermediate heat exchanger 12. Thus, by this arrangement, the second flow path 33 needs to flow out all the second heat exchange tubes 123 on the windward side of the second region 122 of the intermediate heat exchanger 12, and then flows to the second heat exchange tubes 123 on the leeward side of the second region 122 of the intermediate heat exchanger 12, thereby improving the heat exchange efficiency of the second flow path 33 and further improving the energy efficiency of the heat exchanger assembly 10.

In some embodiments of the present utility model, the third heat exchange tube 131 includes a windward side third heat exchange tube 131 and a leeward side third heat exchange tube 131, thereby facilitating arrangement of the third heat exchange tube 131 at the rear heat exchanger 13 and arrangement of the third flow path 34, while improving energy efficiency of the heat exchanger assembly 10.

Further, the third flow path 34 flows from the third heat exchange tube 131 on the windward side of the rear heat exchanger 13 to the third heat exchange tube 131 on the leeward side of the rear heat exchanger 13. 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, with the heat exchange efficiency of the heat exchanger assembly 10 being 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 10 closer to the windward side to the portion of the heat exchanger assembly 10 farther from the leeward side can make the heat exchange of the heat exchanger assembly 10 more energy efficient.

Therefore, by the arrangement, the third flow path 34 can flow to the third heat exchange tube 131 on the leeward side of the rear heat exchanger 13 only after all the third heat exchange tubes 131 on the windward side of the rear heat exchanger 13 are required to flow, so that the heat exchange efficiency of the third flow path 34 is improved, and the energy efficiency of the heat exchanger assembly 10 is further improved.

In some embodiments of the present utility model, the number of heat exchange tubes of the first flow path 32 is greater than the number of heat exchange tubes of the third flow path 34, and the number of heat exchange tubes of the third flow path 34 is greater than the number of heat exchange tubes of the second flow path 33. Thus, by providing the first flow path 32, the second flow path 33, and the third flow path 34 with such a configuration, the heat exchange efficiency of the heat exchanger assembly 10 is improved, and the energy consumption is reduced.

For example, as shown in fig. 1, when the heat exchanger assembly 10 is applied to an indoor unit of an air conditioner, there are 5 total first heat exchange tubes 111 participating in heat exchange in the front heat exchanger 11, 9 total second heat exchange tubes 123 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 32 flows through 5 first heat exchange tubes 111 and 3 second heat exchange tubes 123, the second flow path 33 flows through 6 second heat exchange tubes 123, and the third flow path 34 flows through 7 third heat exchange tubes 131. The middle heat exchanger 12 is closer to the air inlet 6 than the rear heat exchanger 13, the rear heat exchanger 13 is closer to the air inlet 6 than the front heat exchanger 11, the airflow velocity near the middle heat exchanger 12 is greater than that of the rear heat exchanger 13, and the airflow velocity near the rear heat exchanger 13 is greater than that of the front heat exchanger 11, so that the number of heat exchange tubes passing through the first flow path 32 is greater than that of the third flow path 34, and the number of heat exchange tubes passing through the third flow path 34 is greater than that of the second flow path 33, the heat exchange uniformity of the first flow path 32, the second flow path 33 and the third flow path 34 can be ensured as much as possible, the heat exchange efficiency of the heat exchanger assembly 10 is improved, and the energy consumption is reduced.

In some embodiments of the utility model, 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 10 is improved. When the heat exchanger assembly 10 is applied to an indoor unit of an air conditioner, the housing has an air inlet 6 and an air outlet 7, and the middle heat exchanger 12 is closer to the air inlet 6 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, a connecting plate is arranged between the back tube heat exchanger 2 and the middle heat exchanger 12 and is used for connecting the back tube heat exchanger 2 and the middle heat exchanger 12, so that connection reliability of the two heat exchangers is ensured.

In some embodiments of the present utility model, as shown in fig. 1, a baffle 5 is disposed on the windward side of the connection between the middle heat exchanger 12 and the rear heat exchanger 13, so that air flow can be prevented from entering the wind wheel from the gap between the connection between the heat exchanger 12 and the rear heat exchanger 13, thereby reducing the probability that air flow enters the wind wheel without heat exchange of the heat exchanger assembly 10, and improving heat exchange efficiency. In addition, if there is a larger gap between the front heat exchanger 11 and the middle heat exchanger 12, the baffle 5 may be additionally arranged between the two to avoid the air leakage of the heat exchanger assembly 10.

In some embodiments of the utility model, seals are provided between the baffle 5 and the intermediate heat exchanger 12 and between the baffle 5 and the aft heat exchanger 13. Therefore, the air flow can be prevented from flowing to the wind wheel from gaps between the baffle plate 5 and the middle heat exchanger 12 and between the baffle plate 5 and the rear heat exchanger 13, and the probability that the air flow enters the wind wheel without heat exchange of the heat exchanger component 10 is further reduced, so that the heat exchange efficiency is improved.

For example, in the utility model, the sealing element is a sponge element, and two ends of the baffle 5 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 baffle 5 and the heat exchanger is ensured while the connection between the baffle 5 and the heat exchanger is realized, and meanwhile, the sponge attaching mode is also beneficial to the disassembly of the baffle 5 when a user needs to maintain or replace the heat exchanger assembly 10; of course, in other embodiments, the baffle 5 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 some embodiments of the present utility model, 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 123 and the third heat exchange tube 131, and the apertures of the first heat exchange tube 111, the second heat exchange tube 123 and the third heat exchange tube 131 are the same.

It will be appreciated that the use of the heat exchange tube with a small diameter can reduce the material consumption of the heat exchange tube, thereby significantly reducing the overall cost of the heat exchanger assembly 10, but the refrigerant has a large heat exchange resistance and a large pressure loss when passing through the heat exchange tube with a small diameter, which is not beneficial to the circulation of the refrigerant, and the adverse effect can be balanced by increasing the diameter of the fourth heat exchange tube 21.

Considering the cost of the heat exchanger assembly 10 and the refrigerant circulation flow efficiency, the diameter of the fourth heat exchange tube 21 is larger than the diameters of the first heat exchange tube 111, the second heat exchange tube 123 and the third heat exchange tube 131, so that the heat exchange energy efficiency of the heat exchanger assembly 10 can be good while the production cost of the heat exchanger assembly 10 is reduced. And the apertures of the first heat exchange tube 111, the second heat exchange tube 123 and the third heat exchange tube 131 are the same, so that the structure is simplified and the manufacturing is convenient.

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 123, and the third heat exchange tube 131 are 5mm. It can be understood that the heat exchange tubes with the tube diameters of 7mm and 5mm are widely used in the prior art, so that the heat exchange tubes with the tube diameters of the two specifications are adopted, the acquisition difficulty of the heat exchange tubes is reduced, and the manufacturing cost of the heat exchanger assembly 10 can be reduced while the heat exchange energy efficiency of the heat exchanger assembly 10 is ensured.

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

The indoor unit of the air conditioner according to the present utility model includes the heat exchanger assembly 10 described above.

When the heat exchanger assembly 10 is applied to an air conditioning indoor unit, the air conditioning indoor unit comprises a shell, a wind wheel and the heat exchanger assembly 10. Wherein, the casing has air intake 6 and air outlet 7, and air intake 6 sets up the upside at the casing, and air outlet 7 sets up the downside at the casing, and the wind wheel is established in the casing, and heat exchanger assembly 10 is established in the casing and is located the air inlet side of wind wheel. It will be appreciated that the wind wheel drives the airflow to flow from the air inlet 6 to the air outlet 7, and the heat exchanger assembly 10 is arranged upstream of the wind wheel, so that the side of the main heat exchanger 1 remote 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 indoor unit of the air conditioner works, the motor drives the wind wheel to rotate, under the action of the wind wheel, the driving airflow flows from the air inlet 6 to the air outlet 7, the airflow enters the air inlet 6 and then exchanges heat with the heat exchanger assembly 10, and the airflow after heat exchange flows to the air outlet 7 under the action of the wind wheel, so that the air exchange with the air sucked by the wind wheel is performed, and the refrigerating or heating effect of the indoor unit of the air conditioner is realized.

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 indoor unit of the air conditioner of the utility model, by arranging the heat exchanger assembly 10, the main heat exchanger 1 and the back tube heat exchanger 2 arranged on the windward side of the main heat exchanger 1 are arranged, the main heat exchanger 1 comprises a front heat exchanger 11, a middle heat exchanger 12 and a back heat exchanger 13 which 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 123, the back heat exchanger 13 is provided with a third heat exchange tube 131, the back tube heat exchanger 2 is provided with a fourth heat exchange tube 21, and when the heat exchanger assembly 10 is used for refrigerating, the refrigerant flowing out of the back tube heat exchanger 2 flows to the front heat exchanger 11, the middle heat exchanger 12 and the back heat exchanger 13 simultaneously in a plurality of flow paths. Therefore, the small-diameter heat exchange tube has good applicability and high heat exchange efficiency, and the volume of the heat exchanger assembly 10 can be relatively reduced on the premise of the same heat exchange capacity, thereby being beneficial to the miniaturization of the indoor unit of the air conditioner.

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 (14)

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;

when the heat exchanger component is used for refrigerating, the refrigerant flows from the back pipe heat exchanger to the main heat exchanger, and the refrigerant flowing from the back pipe heat exchanger flows into the front heat exchanger, the middle heat exchanger and the rear heat exchanger simultaneously in a plurality of flow paths.

2. The heat exchanger assembly of claim 1, wherein the flow paths of the heat exchanger assembly include an input flow path through the fourth heat exchange tube of the back tube heat exchanger, a first flow path through the first heat exchange tube of the front heat exchanger and a portion of the second heat exchange tube of the middle heat exchanger, a second flow path through the remaining portion of the second heat exchange tube of the middle heat exchanger, and a third flow path through the third heat exchange tube of the rear heat exchanger, refrigerant being split into the first flow path, the second flow path, and the third flow path simultaneously after flowing through the input flow path when the heat exchanger assembly is being cooled.

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

4. The heat exchanger assembly of claim 2, wherein the intermediate heat exchanger includes a first region and a second region, the first region being located on a side of the second region proximate the front heat exchanger, the first flow path passing through the second heat exchange tubes of the first region, the second flow path passing through the second heat exchange tubes of the second region.

5. The heat exchanger assembly of claim 2, 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, and the first flow path flows sequentially through the second heat exchange tube on the windward side of the middle heat exchanger, the first heat exchange tube on the windward side of the front heat exchanger, the first heat exchange tube on the leeward side of the front heat exchanger, and the second heat exchange tube on the leeward side of the middle heat exchanger.

6. The heat exchanger assembly of claim 2, wherein 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 second flow path flowing sequentially through the second heat exchange tube on the windward side of the intermediate heat exchanger and the second heat exchange tube on the leeward side of the intermediate heat exchanger.

7. The heat exchanger assembly of claim 2, wherein 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 third flow path flowing from the third heat exchange tube on the windward side of the rear heat exchanger to the third heat exchange tube on the leeward side of the rear heat exchanger.

8. The heat exchanger assembly of claim 2, wherein the number of heat exchange tubes of the first flow path is greater than the number of heat exchange tubes of the third flow path, which is greater than the number of heat exchange tubes of the second flow path.

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

10. The heat exchanger assembly of claim 1, wherein a baffle is provided on a windward side of a junction of the intermediate heat exchanger and the rear heat exchanger.

11. The heat exchanger assembly of claim 10, wherein seals are provided between the baffle and the intermediate heat exchanger and between the baffle and the rear 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 according to claim 12, 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.