CN219735468U

CN219735468U - Heat exchanger assembly and air conditioner with same

Info

Publication number: CN219735468U
Application number: CN202320591191.8U
Authority: CN
Inventors: 赵夫峰; 裴虎; 苏明泽; 唐华; 李日新; 于海峰; 李成恩; 彭启; 吴铨发; 梁兆勇
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-09-22
Anticipated expiration: 2033-03-21

Abstract

The utility model discloses a heat exchanger component and an air conditioner with the same. The rear heat exchanger is inclined backward in the top-down direction; the upper end of preceding heat exchanger is connected with the upper end of back heat exchanger, all wears to be equipped with the heat exchange tube on preceding heat exchanger and the back heat exchanger, and contained angle between back heat exchanger and the horizontal direction is A, and satisfies: a is more than or equal to 49 degrees and less than or equal to 53 degrees, the height of the rear heat exchanger is H1, the height of the front heat exchanger is H2, and the requirements are satisfied: H2/H1 is more than or equal to 2 and less than or equal to 2.2. According to the heat exchanger assembly, the upper end of the rear heat exchanger is connected with the upper end of the front heat exchanger, the rear heat exchanger is inclined backwards in the top-down direction, the length of the rear heat exchanger is longer under the same height limit, the positions on the rear heat exchanger where heat exchange tubes can be installed are more, and the height of the front heat exchanger is more reasonable, so that the layout of the heat exchanger assembly in an air conditioner is more reasonable.

Description

Heat exchanger assembly and air conditioner with same

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 with the same.

Background

With the continuous improvement of energy efficiency standards of air conditioners at home and abroad, how to improve heat exchange efficiency of heat exchangers of air conditioners becomes a problem to be solved urgently. In the existing air conditioner indoor unit, the installation positions of the heat exchanger components are fewer, and the heat exchange efficiency of the heat exchange tubes in the heat exchanger components is poor.

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 assembly, and the heat exchanger assembly is reasonably arranged in the air conditioner.

The utility model also provides an air conditioner which comprises the heat exchanger component.

The heat exchanger assembly according to the embodiment of the utility model comprises a rear heat exchanger and a front heat exchanger. The rear heat exchanger is inclined backwards in a top-down direction; the upper end of preceding heat exchanger with the upper end of back heat exchanger is connected, preceding heat exchanger with all wear to be equipped with the heat exchange tube on the back heat exchanger, contained angle between back heat exchanger and the horizontal direction is A, and satisfies: a is more than or equal to 49 degrees and less than or equal to 53 degrees, the height of the rear heat exchanger is H1, the height of the front heat exchanger is H2, and the requirements are satisfied: H2/H1 is more than or equal to 2 and less than or equal to 2.2.

According to the heat exchanger assembly provided by the embodiment of the utility model, the upper end of the rear heat exchanger is connected with the upper end of the front heat exchanger, the rear heat exchanger is inclined backwards in the top-down direction, the included angle between the rear heat exchanger and the horizontal direction is A, and the following conditions are met: 49 be less than or equal to A is less than or equal to 53, the height of back heat exchanger is H1, the height of preceding heat exchanger is H2, and satisfy 2 be less than or equal to H2/H1 be less than or equal to 2.2, the length of back heat exchanger is longer under the same high restriction this moment, the position that can install the heat exchange tube on the back heat exchanger is more, can guarantee the heat transfer effect of back heat exchanger, can avoid the back heat exchanger to install in the direction of height the position restriction of windward wheel, simultaneously can avoid the back heat exchanger to be deeper at the degree of depth of windward wheel rear side, the air current flow of the bottom of avoiding the back heat exchanger is relatively poor, the heat transfer effect of the bottom of avoiding the back heat exchanger is relatively poor. The front heat exchanger can better semi-surround the wind wheel, so that the air flow entering the air conditioner passes through the front heat exchanger and the rear heat exchanger, exchanges heat with the front heat exchanger and the rear heat exchanger and is blown out from the air outlet by the wind wheel drive, the air flow can be fully exchanged, the wind wheel can drive more air flows after exchanging heat by the front heat exchanger to flow out from the air outlet, and the heat exchanging effect of the front heat exchanger is better, so that the heat exchanging effect of the heat exchanger component is better; and the height of the front heat exchanger is reasonable, so that the layout of the heat exchanger assembly in the air conditioner is reasonable.

In some embodiments of the utility model, the front heat exchanger is curved to project forward; in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger are arranged in a plurality of rows, and the centers of a plurality of heat exchange tubes in each row of heat exchange tubes are positioned on the same arc line protruding forwards.

In some embodiments of the utility model, a plurality of arcuate lines on the front heat exchanger where the centers of the plurality of rows of heat exchange tubes are located are arranged concentrically.

In some embodiments of the present utility model, the heat exchange tubes on the front heat exchanger are arranged in a plurality of rows in a direction from a windward side to a leeward side, the plurality of rows of heat exchange tubes includes a first row of heat exchange tubes and a second row of heat exchange tubes, the first row of heat exchange tubes is located on the windward side of the second row of heat exchange tubes, a distance between centers of two adjacent heat exchange tubes in the first row of heat exchange tubes is M1, a distance between centers of two adjacent heat exchange tubes in the second row of heat exchange tubes is M2, and the following is satisfied: m2 > M1.

In some embodiments of the utility model, the distance between the center of the first row of heat exchange tubes and the center of the second row of heat exchange tubes in the direction of the windward side to the leeward side is M3, and satisfies: m3=m1, or m3=m2.

In some embodiments of the utility model, the number of heat exchange tubes of the front heat exchanger is N1, the number of heat exchange tubes of the rear heat exchanger is N2, and: N1/N2 is more than or equal to 1.1 and less than or equal to 3.

In some embodiments of the utility model, the heat exchange tubes of at least one of the front heat exchanger and the rear heat exchanger comprise a first heat exchange tube and a second heat exchange tube, the first heat exchange tube having a larger aperture than the second heat exchange tube.

In some embodiments of the present utility model, the first heat exchange tube has a pore diameter D31, and satisfies: d31 is more than or equal to 5.8 and less than or equal to 7.5mm; the aperture of the second heat exchange tube is D32, and the requirements are that: d32 is more than or equal to 3 and less than or equal to 5.5mm.

In some embodiments of the present utility model, the front heat exchanger and the rear heat exchanger each include a plurality of spaced fins, the heat exchange tubes penetrate through the fins, the front heat exchanger is provided with a plurality of rows of heat exchange tubes sequentially arranged in a direction from a windward side to a leeward side, the rear heat exchanger is provided with a plurality of rows of heat exchange tubes sequentially arranged in a direction from the windward side to the leeward side, a region between two adjacent heat exchange tubes in each row of the heat exchange tubes on the fins is an air passing region, the air passing region is provided with a bridge plate, two ends of the bridge plate along the arrangement direction of each row of the heat exchange tubes are connected with the fins, and a middle part of the bridge plate is spaced from the fins.

In some embodiments of the present utility model, the rear heat exchanger has a third row of heat exchange tubes and a fourth row of heat exchange tubes sequentially arranged in a direction from a windward side to a leeward side, the over-wind area between two adjacent heat exchange tubes in the third row of heat exchange tubes on the fin is a third over-wind area, the over-wind area between two adjacent heat exchange tubes in the fourth row of heat exchange tubes on the fin is a fourth over-wind area, the fin of the rear heat exchanger includes a first area and a second area, the first area and the second area each include a third over-wind area and a fourth over-wind area, the third over-wind area of the first area is located above the third over-wind area of the second area, the fourth wind passing area of the first area is located above the fourth wind passing area of the second area, the lower end of the third wind passing area of the first area is located at the lower side of the lower end of the fourth wind passing area of the first area, the upper end of the third wind passing area of the second area is located at the lower side of the upper end of the fourth wind passing area of the second area, the bridge pieces of the wind passing area of the first area are 4-6 spaced apart in the direction from the windward side to the leeward side, and the bridge pieces of the wind passing area of the second area are 3-5 spaced apart in the direction from the windward side to the leeward side.

In some embodiments of the present utility model, the front heat exchanger has a first row of heat exchange tubes and a second row of heat exchange tubes sequentially arranged in a direction from a windward side to a leeward side, the over-wind region between two adjacent heat exchange tubes in the first row of heat exchange tubes on the fin is a first over-wind region, the over-wind region between two adjacent heat exchange tubes in the first row of heat exchange tubes on the fin is a second over-wind region, the fin of the front heat exchanger includes a third region, a fourth region, a fifth region and a sixth region, the third region includes a first over-wind region and a second over-wind region, the fourth region includes a second over-wind region, the fifth region includes a first over-wind region, the sixth region includes a second over-wind region, the first over-wind region of the third region being above the first over-wind region of the fifth region, the second over-wind region of the third region being above the second over-wind region of the fourth region, the second over-wind region of the sixth region being below the second over-wind region of the fourth region, an upper end of the sixth region being below an upper end of the fifth region, a lower end of the fourth region being below an upper end of the fifth region, a lower end of the first over-wind region of the third region being above a lower end of the fourth region, the bridge pieces of the over-wind region of the third region being 4-6 spaced apart in a direction from a windward side to a leeward side, the bridge pieces of the over-wind region of the fourth region being 3-5 spaced apart in a direction from a windward side to a leeward side, the bridge pieces of the over-wind region of the fifth region are 3-4 spaced apart in a direction from a windward side to a leeward side, and the bridge pieces of the over-wind region of the sixth region are 2-3 spaced apart in the direction from the windward side to the leeward side.

In some embodiments of the present utility model, the heat exchange tubes of the heat exchanger assembly have the same pore diameters, the heat exchange tubes form a heat exchange flow path, the heat exchange flow path includes a first flow path, a second flow path, a first branch, a second branch, a third branch and a fourth branch, the first flow path, the second flow path, the first branch, the second branch, the third branch and the fourth branch each flow through at least one of the heat exchange tubes, wherein the first flow path and the second flow path flow through the heat exchange tubes on a windward side of the heat exchanger assembly, one ends of the first branch and the second branch each communicate with one end of the first flow path, one ends of the third branch and the fourth branch each communicate with one end of the second flow path, and under refrigeration, refrigerant flows into the first flow path and the second flow path simultaneously, and refrigerant flows out of the first branch and the second branch simultaneously flows out of the second branch and the third branch simultaneously flows out of the third branch and the fourth branch.

In some embodiments of the present utility model, the first heat exchange tube is located on a windward side of the front heat exchanger or the rear heat exchanger, the heat exchange tube is provided with a heat exchange flow path, the heat exchange flow path comprises a first flow path, a first branch, a second branch, a third branch and a fourth branch, the first flow path flows through the first heat exchange tube, the first branch to the fourth branch all flow through at least one second heat exchange tube, the refrigerant flows to the first flow path in a refrigeration condition, and the refrigerant flowing out of the first flow path is split to flow into the first branch, the second branch, the third branch and the fourth branch simultaneously.

In some embodiments of the present utility model, the first heat exchange tube is located on an upstream side of the front heat exchanger or the rear heat exchanger, the heat exchange tube is provided with a heat exchange flow path, the heat exchange flow path includes a first flow path, a second flow path, a first branch, a second branch, a third branch and a fourth branch, the first flow path and the second flow path each flow through at least one of the first heat exchange tube, the first branch, the second branch, the third branch and the fourth branch each flow through at least one of the second heat exchange tube, one ends of the first branch and the second branch each communicate with one end of the first flow path, one ends of the third branch and the fourth branch each communicate with one end of the second flow path, and under a refrigeration condition, the refrigerant flows into the first flow path and the second flow path simultaneously, the refrigerant flows into the first branch and the second branch simultaneously, and the refrigerant flows into the third branch and the fourth branch simultaneously from the second flow path.

The air conditioner comprises a shell and the heat exchanger assembly, wherein the heat exchanger assembly is arranged in the shell.

According to the air conditioner provided by the embodiment of the utility model, the upper end of the rear heat exchanger is connected with the upper end of the front heat exchanger, the rear heat exchanger is inclined backwards in the top-down direction, the included angle between the rear heat exchanger and the horizontal direction is A, and the following conditions are satisfied: 49 be less than or equal to A is less than or equal to 53, the height of back heat exchanger is H1, the height of preceding heat exchanger is H2, and satisfy 2 be less than or equal to H2/H1 be less than or equal to 2.2, the length of back heat exchanger is longer under the same high restriction this moment, the position that can install the heat exchange tube on the back heat exchanger is more, can guarantee the heat transfer effect of back heat exchanger, can avoid the back heat exchanger to install in the direction of height the position restriction of windward wheel, simultaneously can avoid the back heat exchanger to be deeper at the degree of depth of windward wheel rear side, the air current flow of the bottom of avoiding the back heat exchanger is relatively poor, the heat transfer effect of the bottom of avoiding the back heat exchanger is relatively poor. The front heat exchanger can better semi-surround the wind wheel, so that the air flow entering the air conditioner passes through the front heat exchanger and the rear heat exchanger, exchanges heat with the front heat exchanger and the rear heat exchanger and is blown out from the air outlet by the wind wheel drive, the air flow can be fully exchanged, the wind wheel can drive more air flows after exchanging heat by the front heat exchanger to flow out from the air outlet, and the heat exchanging effect of the front heat exchanger is better, so that the heat exchanging effect of the heat exchanger component is better; and the height of the front heat exchanger is reasonable, so that the layout of the heat exchanger components in the air conditioner is reasonable, and the annual energy consumption efficiency of the air conditioner is high.

In some embodiments of the present utility model, the height of the housing is H, the thickness of the housing in the front-to-back direction is L, and 1.45.ltoreq.H/L.ltoreq.1.72 is satisfied.

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 an internal view of an air conditioner according to an embodiment of the present utility model;

FIG. 2 is an interior view of a heat exchanger assembly according to an embodiment of the present utility model;

FIG. 3 is a front view of a fin of a heat exchanger assembly according to an embodiment of the present utility model;

FIG. 4 is a plot of the ratio of the height of the front heat exchanger to the height of the rear heat exchanger versus the annual energy consumption efficiency of the heat exchanger assembly in accordance with an embodiment of the present utility model;

FIG. 5 is a line graph of the angle between the rear heat exchanger and the horizontal direction of a heat exchanger assembly versus annual energy consumption efficiency in accordance with an embodiment of the present utility model;

FIG. 6 is a plot of the ratio of the number of heat exchange tubes of the front heat exchanger to the number of heat exchange tubes of the rear heat exchanger versus the annual energy consumption efficiency of the heat exchanger assembly in accordance with an embodiment of the present utility model;

FIG. 7 is a line graph of a first heat exchange tube number versus annual energy consumption efficiency of a heat exchanger assembly in accordance with an embodiment of the present utility model;

FIG. 8 is a schematic view of a heat exchange flow path of a heat exchanger assembly according to an embodiment of the present utility model;

FIG. 9 is a schematic view of a heat exchange flow path of a heat exchanger assembly according to another embodiment of the present utility model;

fig. 10 is a schematic view of a heat exchange flow path of a heat exchanger assembly according to yet another embodiment of the present utility model.

Reference numerals:

100. an air conditioner;

10. a heat exchanger assembly;

1. a front heat exchanger; 11. a first row of heat exchange tubes; 12. a second row of heat exchange tubes; 13. a first overwind area; 14. a second overwind area;

2. a rear heat exchanger; 21. a third row of heat exchange tubes; 22. a fourth row of heat exchange tubes; 23. a third overwind area; 24. a fourth wind passing area;

3. a fin; 31. a first region; 32. a second region; 33. a third region; 34. a fourth region; 35. a fifth region; 36. a sixth region;

4. a heat exchange flow path; 41. a first flow path; 42. a second flow path; 43. a first branch; 44. a second branch; 45. a third branch; 46. a fourth branch;

20. a housing; 30. a wind wheel; 40. an air outlet; 50. and an air inlet.

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 rear heat exchanger 2 and a front heat exchanger 1.

Specifically, the rear heat exchanger 2 is inclined backward in the top-down direction, so that the length of the rear heat exchanger 2 is longer under the limit of the height of the rear heat exchanger 2 from top to bottom; the upper end of preceding heat exchanger 1 is connected with the upper end of back heat exchanger 2, all wears to be equipped with the heat transfer pipe on preceding heat exchanger 1 and the back heat exchanger 2, and two adjacent heat transfer pipes on preceding heat exchanger 1 and the back heat exchanger 2 form the U-shaped pipe, and as shown in fig. 5, the contained angle between back heat exchanger 2 and the horizontal direction is A, and satisfies: a is more than or equal to 49 degrees and less than or equal to 53 degrees, as shown in FIG. 4, the height of the rear heat exchanger 2 is H1, the height of the front heat exchanger 1 is H2, and the following conditions are satisfied: H2/H1 is more than or equal to 2 and less than or equal to 2.2.

Under the driving action of the wind wheel 30, the air flow outside the air conditioner 100 enters the inside of the shell 20 of the air conditioner 100 from the air inlet 50, and the air flow in the shell 20 flows through the heat exchanger assembly 10 and exchanges heat with the heat exchanger assembly 10, and the air flow after heat exchange is blown out through the air outlet 40. It will be appreciated that the angle between the back heat exchanger 2 and the horizontal may be 49 °, 49.5 °, 50 °, 50.5 °, 51 °, 51.5 °, 52 °, 52.5 ° or 53 °. The included angle between the rear heat exchanger 2 and the horizontal direction is not smaller than 49 degrees, so that the length of the rear heat exchanger 2 is longer under the same height limit of the rear heat exchanger 2, the positions on the rear heat exchanger 2 where heat exchange pipes can be arranged are more, and the heat exchange effect of the rear heat exchanger 2 can be ensured; the included angle between the rear heat exchanger 2 and the horizontal direction is not more than 53 degrees, so that the position limitation of the wind wheel 30 on the height direction during the installation of the rear heat exchanger 2 can be avoided, the depth of the rear heat exchanger 2 at the rear side of the wind wheel 30 can be avoided to be deeper, the poor airflow flow at the bottom of the rear heat exchanger 2 is avoided, and the poor heat exchange effect at the bottom of the rear heat exchanger 2 is avoided.

It will be appreciated that the ratio of the height of the front heat exchanger 1 to the height of the rear heat exchanger 2 may be 2, 2.02, 2.04, 2.06, 2.08, 2.1, 2.12, 2.14, 2.16, 2.18 or 2.2. The ratio of the height of the front heat exchanger 1 to the height of the rear heat exchanger 2 is not less than 2, so that the height of the front heat exchanger 1 is at least twice that of the rear heat exchanger 2, the height of the front heat exchanger 1 is higher, the front heat exchanger 1 can better and semi-surround the wind wheel 30, the air flow entering the air conditioner 100 passes through the front heat exchanger 1 and the rear heat exchanger 2, exchanges heat with the front heat exchanger 1 and the rear heat exchanger 2, is blown out from the air outlet 40 by the wind wheel 30, and can be fully exchanged; the ratio of the height of the front heat exchanger 1 to the height of the rear heat exchanger 2 is not more than 2.2, so that the height of the front heat exchanger 1 can be more reasonable, and the layout of the heat exchanger assembly 10 in the air conditioner 100 can be more reasonable.

According to the heat exchanger assembly 10 of the embodiment of the present utility model, by connecting the upper end of the rear heat exchanger 2 with the upper end of the front heat exchanger 1, the rear heat exchanger 2 is inclined backward in the top-down direction, the included angle between the rear heat exchanger 2 and the horizontal direction is a, and the following is satisfied: 49 is less than or equal to A is less than or equal to 53, the height of the rear heat exchanger 2 is H1, the height of the front heat exchanger 1 is H2, the requirement that H2/H1 is less than or equal to 2.2 is met, at the moment, the length of the rear heat exchanger 2 is longer under the same height limit, the positions on the rear heat exchanger 2, where heat exchange pipes can be installed, are more, the heat exchange effect of the rear heat exchanger 2 can be ensured, the position limit of the wind wheel 30 in the height direction when the rear heat exchanger 2 is installed can be avoided, the depth of the rear heat exchanger 2 at the rear side of the wind wheel 30 can be avoided to be deeper, the poor airflow flow at the bottom of the rear heat exchanger 2 is avoided, and the poor heat exchange effect at the bottom of the rear heat exchanger 2 is avoided. At this time, the front heat exchanger 1 is higher, the front heat exchanger 1 can better semi-surround the wind wheel 30, so that the air flow entering the air conditioner 100 passes through the front heat exchanger 1 and the rear heat exchanger 2, exchanges heat with the front heat exchanger 1 and the rear heat exchanger 2 and is then blown out from the air outlet 40 by the wind wheel 30, the air flow can be fully exchanged, the wind wheel 30 can drive more air flows after exchanging heat by the front heat exchanger 1 to flow out from the air outlet 40, the heat exchanging effect of the front heat exchanger 1 is better, and the heat exchanging effect of the heat exchanger assembly 10 is better; and the height of the front heat exchanger 1 is reasonable, so that the layout of the heat exchanger assembly 10 in the air conditioner 100 is reasonable.

In some embodiments of the present utility model, as shown in fig. 1, 2 and 3, the front heat exchanger 1 is in the shape of a forwardly convex arc. At this time, the air flow enters the air conditioner 100 from the air inlet 50 under the driving of the wind wheel 30, so that the contact between the air flow and the folded angle of the front heat exchanger 1 can be avoided when the air flow flows through the front heat exchanger 1, and the generation of a sharper whistle sound by the air flow is avoided. At this time, the space utilization of the front heat exchanger 1 is better, the problem that accumulated water is easy to occur at the outer corners of the bending parts can be reduced, the phenomenon that accumulated water drops into the air duct of the air conditioner 100 to blow water can be avoided as much as possible, and the quality of the air conditioner 100 is improved.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the heat exchange tubes on the front heat exchanger 1 are arranged in a plurality of columns in a direction from the windward side to the leeward side, and the centers of the plurality of heat exchange tubes in each column are located on the same arc line protruding forward. At this time, the same arc line where the center of the heat exchange tube is close to the shape of the front heat exchanger 1, so that the layout of the heat exchange tube in the front heat exchanger 1 is reasonable, and the heat exchange effect of the front heat exchanger 1 can be ensured.

In some embodiments of the present utility model, as shown in fig. 1 and 2, a plurality of arc lines in which centers of a plurality of columns of heat exchange tubes on the front heat exchanger 1 are located are concentrically arranged. At this time, the distances between each heat exchange tube in each row of heat exchange tubes and the heat exchange tube in the other row closest to the heat exchange tube are the same, so that the layout of the heat exchange tubes in the front heat exchanger 1 is more reasonable, and the heat exchange effect of the front heat exchanger 1 can be ensured.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the heat exchange tubes on the front heat exchanger 1 are arranged in a plurality of rows in a direction from the windward side to the leeward side, the plurality of rows of heat exchange tubes include a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the first row of heat exchange tubes 11 is located on the windward side of the second row of heat exchange tubes 12, a distance between centers of two adjacent heat exchange tubes in the first row of heat exchange tubes 11 is M1, a distance between centers of two adjacent heat exchange tubes in the second row of heat exchange tubes 12 is M2, and the following is satisfied: m2 > M1. It will be appreciated that the distance between the centers of two adjacent heat exchange tubes in the second row of heat exchange tubes 12 is greater than the distance between the centers of two adjacent heat exchange tubes in the first row of heat exchange tubes 11. For example, in the cooling mode, the external air flow enters the air conditioner 100, the air flow flows to the front heat exchanger 1 and exchanges heat with the refrigerant in the first row of heat exchange tubes 11, the refrigerant in the first row of heat exchange tubes 11 absorbs heat by evaporation, the air flow gradually cools, the cooled air flow flows to the second row of heat exchange tubes 12 and exchanges heat with the refrigerant in the second row of heat exchange tubes 12, and at this time, the amount of heat exchange between the air flow and the refrigerant in the second row of heat exchange tubes 12 is small. By setting the distance between two adjacent heat exchange tubes in the second row of heat exchange tubes 12 of the front heat exchanger 1 larger, the number of the second row of heat exchange tubes 12 used while ensuring the heat exchange effect is smaller, and the manufacturing cost of the heat exchanger assembly 10 can be saved.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the distance between the center of the first column of heat exchange tubes 11 and the center of the second column of heat exchange tubes 12 in the direction from the windward side to the leeward side is M3, and satisfies: m3=m1, or m3=m2. It will be appreciated that in the direction from the windward side to the leeward side, each heat exchange tube in the first row of heat exchange tubes 11 has a second row of heat exchange tubes 12 close thereto, the distance between the center of the first row of heat exchange tubes 11 and the center of the second row of heat exchange tubes 12 close thereto is M3, the distance between the center of the first row of heat exchange tubes 11 and the center of the second row of heat exchange tubes 12 close thereto may be the same as the distance between the centers of two adjacent heat exchange tubes in the first row of heat exchange tubes 11 of the front heat exchanger 1, or the distance between the center of the first row of heat exchange tubes 11 and the center of the second row of heat exchange tubes 12 close thereto may be the same as the distance between the centers of two adjacent heat exchange tubes in the second row of heat exchange tubes 12 of the front heat exchanger 1, so that the distance between the respective heat exchange tubes of the front heat exchanger 1 may be relatively regular, and the front heat exchanger 1 may be relatively standardized during processing and assembly.

Further, as shown in fig. 1 and 2, the heat exchange tubes on the rear heat exchanger 2 are arranged in a plurality of rows in the direction from the windward side to the leeward side, the plurality of rows of heat exchange tubes include a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the third row of heat exchange tubes 21 are located on the windward side of the fourth row of heat exchange tubes 22, it is understood that in the rear heat exchanger 2, the distance between the centers of two adjacent heat exchange tubes in the third row of heat exchange tubes 21, the distance between the centers of two adjacent heat exchange tubes in the fourth row of heat exchange tubes 22 and the distance between the center of the third row of heat exchange tubes 21 and the center of the fourth row of heat exchange tubes 22 closer thereto may be M1 or M2, and the tube spacing on the front heat exchanger 1 and the rear heat exchanger 2 in the heat exchanger assembly 10 may be only M1 and M2, which may make the distance between the respective heat exchange tubes of the heat exchanger assembly 10 more regular, and the heat exchanger assembly 10 may be standardized in processing and assembly.

In some embodiments of the present utility model, as shown in fig. 1, 2 and 6, the number of heat exchange tubes of the front heat exchanger 1 is N1, the number of heat exchange tubes of the rear heat exchanger 2 is N2, and the following conditions are satisfied: N1/N2 is more than or equal to 1.1 and less than or equal to 3. It will be appreciated that the ratio of the number of heat exchange tubes of the front heat exchanger 1 to the number of heat exchange tubes of the rear heat exchanger 2 may be 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9 or 3, and the ratio of the number of heat exchange tubes of the front heat exchanger 1 to the number of heat exchange tubes of the rear heat exchanger 2 may be not less than 1.1, so that the number of heat exchange tubes on the front heat exchanger 1 with higher height may be greater, the refrigerant or high pressure gas in the front heat exchanger 1 may exchange heat with the outside may be more, the heat exchange efficiency of the front heat exchanger 1 may be higher, and the heat exchange efficiency of the heat exchanger assembly 10 may be further higher; the ratio of the number of the heat exchange tubes of the front heat exchanger 1 to the number of the heat exchange tubes of the rear heat exchanger 2 is not more than 3, so that the layout of the heat exchange tubes in the front heat exchanger 1 is reasonable, a certain distance exists between the heat exchange tubes in the front heat exchanger 1, the number of the heat exchange tubes used by the front heat exchanger 1 is less while the heat exchange effect is ensured, and the manufacturing cost of the heat exchanger assembly 10 can be saved.

In some embodiments of the present utility model, the heat exchange tube of at least one of the front heat exchanger 1 and the rear heat exchanger 2 includes a first heat exchange tube and a second heat exchange tube, and the first heat exchange tube has a larger aperture than the second heat exchange tube. As shown in tables 1 and 2 below, when the apertures of the first heat exchange tube and the second heat exchange tube are different, the overall APF lift rate is higher.

Table 1 APF change for air conditioner when heat exchange tube holes are the same in diameter

Table 2 APF change of air conditioner when heat exchange tube pore diameters are different

When the heat exchange tubes in the heat exchanger assembly 10 have the same aperture, the overall APF may be raised by 4.06%, when the heat exchange tubes in the heat exchanger assembly 10 have two different apertures, the overall APF may be raised by 4.8%, when the heat exchange tubes in the two different apertures have two different apertures, the overall APF is raised more, and as shown in fig. 7, when the number of the first heat exchange tubes is 3, 4, 6, the overall APF is raised more.

In some embodiments of the present utility model, the first heat exchange tube has a pore diameter D31, and satisfies: d31 is more than or equal to 5.8 and less than or equal to 7.5mm. It is understood that the aperture of the first heat exchange tube may be 5.8mm, 5.9mm, 6mm, 6.1mm, 6.2mm, 6.3mm, 6.4mm, 6.5mm, 6.6mm, 6.7mm, 6.8mm, 6.9mm, 7mm, 7.1mm, 7.2mm, 7.3mm, 7.4mm or 7.5mm. The aperture of the first heat exchange tube is not smaller than 5.8mm, so that more heat exchange media in the first heat exchange tube can be used, the heat exchange efficiency of the first heat exchange tube is higher, and the heat exchange efficiency of the heat exchanger assembly 10 is higher; the aperture of the first heat exchange tube is not more than 7.5mm, so that the problem that the distance between the heat exchange tubes is smaller due to the fact that the aperture of the first heat exchange tube is larger can be avoided, and the heat exchange efficiency of the heat exchange tubes is prevented from being influenced.

In some embodiments of the present utility model, the second heat exchange tube has a pore diameter D32, and satisfies: d32 is more than or equal to 3 and less than or equal to 5.5mm. It is understood that the aperture of the second heat exchange tube may be 3mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5mm, 5.1mm, 5.2mm, 5.3mm, 5.4mm or 5.5mm. The aperture of the second heat exchange tube is not smaller than 3mm, so that enough heat exchange medium can flow in the second heat exchange tube to exchange heat with the air flow, the heat exchange efficiency of the second heat exchange tube can be ensured, and the heat exchange efficiency of the heat exchanger assembly 10 is further ensured; the aperture of the second heat exchange tube is not more than 5.5mm, so that the phenomenon that the distance between the heat exchange tubes is smaller due to the fact that the aperture of the second heat exchange tube is larger can be avoided, and the influence on the heat exchange efficiency of the heat exchange tubes is avoided.

In some embodiments of the present utility model, as shown in fig. 1 and 3, each of the front heat exchanger 1 and the rear heat exchanger 2 includes a plurality of spaced fins 3, heat exchange tubes are provided to pass through the fins 3, and heat exchange media flowing in the heat exchange tubes can transfer heat to the fins 3, so that heat exchange areas of the front heat exchanger 1 and the rear heat exchanger 2 can be increased. For example, in the cooling mode, the refrigerant flows in the heat exchange tube, the cold of the refrigerant can be emitted to the fins 3 through the heat exchange tube, the external air flow enters the air conditioner 100, the air flow flows to the front heat exchanger 1 and the rear heat exchanger 2 and exchanges heat with the refrigerant in the heat exchange tube, the refrigerant in the heat exchange tube evaporates to absorb heat, and at the same time, the air flow can exchange heat with the fins 3, gradually cool, and flows out from the air outlet 40 under the driving of the wind wheel 30.

Further, as shown in fig. 2 and 3, the front heat exchanger 1 is provided with a plurality of rows of heat exchange tubes sequentially arranged in a direction from the windward side to the leeward side, the rear heat exchanger 2 is provided with a plurality of rows of heat exchange tubes sequentially arranged in a direction from the windward side to the leeward side, and the heat exchange tubes can be fixed at a plurality of positions on the front heat exchanger 1 and the rear heat exchanger 2 by arranging a plurality of spaced fins 3, so that the positions of the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are more reliable, and the heat exchange tubes are more reliably installed. The area between two adjacent heat exchange tubes in each row of heat exchange tubes on the fin 3 is an air passing area, the air passing area is provided with bridge pieces, the two ends of the bridge pieces along the arrangement direction of each row of heat exchange tubes are connected with the fin 3, and the middle part of the bridge pieces is spaced from the fin 3. The bridge piece includes the top sheet and corresponds support piece with it, the top sheet is to the position fretwork of fin 3 between perpendicular to fin 3 and the position fretwork that sets up the bridge piece on the fin 3, through setting up the bridge piece, can disturb the air current when the air current flows through the wind district, change the flow direction of air current, make the air current carry out abundant heat exchange with the heat exchange tube, further promote the heat exchange effect of fin 3, and the condensation water that the heat exchange in-process produced drip easily, compromise simultaneously air conditioner 100 frosting problem, make fin 3 positions more be convenient for defrost.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the heat exchanger 2 has a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22 sequentially arranged in a direction from the windward side to the leeward side, the wind passing region between two adjacent heat exchange tubes in the third row of heat exchange tubes 21 on the fin 3 is a third wind passing region 23, the wind passing region between two adjacent heat exchange tubes in the fourth row of heat exchange tubes 22 on the fin 3 is a fourth wind passing region 24, the fin 3 of the heat exchanger 2 includes a first region 31 and a second region 32, the first region 31 and the second region 32 each include the third wind passing region 23 and the fourth wind passing region 24, the third wind passing region 23 of the first region 31 is located above the third wind passing region 23 of the second region 32, the fourth wind passing region 24 of the first region 31 is located above the fourth wind passing region 24 of the second region 32, the lower end of the third wind passing region 23 of the first region 31 is located below the fourth wind passing region 31 to the windward side of the fourth region 32, and the wind passing region is located below the fourth wind passing region of the fourth wind passing region 32 on the windward side of the fin 3, and the wind passing region is spaced apart from the windward side of the fourth region 32 to the windward side of the fourth region 32, and the wind passing region is located below the fourth wind passing region of the fourth wind passing region is located at the fourth wind passing region of the fourth wind passing region 32.

It will be appreciated that the bridge pieces of the over-wind region of the first region 31 may be 4, 5 or 6 spaced apart in the direction of the windward side to the leeward side, and the bridge pieces of the over-wind region of the second region 32 may be 3, 4 or 5 spaced apart in the direction of the windward side to the leeward side, as shown in fig. 2 and 3. Under the driving action of the wind wheel 30, the air flow outside the air conditioner 100 enters the inside of the shell 20 of the air conditioner 100 from the air inlet 50 positioned above the heat exchanger assembly 10, when the external air flows to the rear heat exchanger 2, the air flow speed on the third air passing area 23 between the third row of heat exchange tubes 21 on the windward side is higher, wherein the third air passing area 23 positioned at the upper end of the rear heat exchanger 2 is firstly contacted with the external air flow, the air flow speed of the air flow of the third air passing area 23 positioned at the upper end of the rear heat exchanger 2 is higher, the air flow speed of the air flow is still higher when the air flow flows from the air inlet 50 to the corresponding fourth air passing area 24 after flowing through the third air passing area 23, and the air flow speed is gradually reduced when the air flow flows from the air inlet 50 to the third air passing area 23 positioned at the lower end of the rear heat exchanger 2, so that the air flow speed of the air flow at the lower end of the third air passing area 23 of the rear heat exchanger 2 is relatively lower. At this time, the airflow velocity in the first area 31 is greater than that in the second area 32, and the bridge pieces in the first area 31 are greater than those in the second area 32, so that the airflow can be better disturbed when flowing through the third and fourth air-passing areas 23 and 24, and the flowing direction of the airflow is changed, so that the airflow can perform sufficient heat exchange with the heat exchange tubes on the rear heat exchanger 2, and the heat exchange effect of the rear heat exchanger 2 is further improved.

In some embodiments of the present utility model, as shown in fig. 2 and 3, the front heat exchanger 1 has a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12 sequentially arranged in a direction from a windward side to a leeward side, the over-wind region between two adjacent heat exchange tubes in the first row of heat exchange tubes 11 on the fin 3 is a first over-wind region 13, the over-wind region between two adjacent heat exchange tubes in the first row of heat exchange tubes 11 on the fin 3 is a second over-wind region 14, the fin 3 of the front heat exchanger 1 includes a third region 33, a fourth region 34, a fifth region 35 and a sixth region 36, the third region 33 includes the first over-wind region 13 and the second over-wind region 14, the fourth region 34 includes the second over-wind region 14, the sixth region 36 includes the second over-wind region 14, the first over-wind region 13 of the third region 33 is located above the first over-wind region 13 of the fifth region 35, the fourth region 33 is located below the fourth region 14 on the upper end of the fourth region 34, the fourth region 34 is located below the fourth region 34 on the upper end of the fourth region 34, and the fifth region 34 is located below the fourth region 34 on the fourth region on the lower end of the fourth region 34.

At this time, under the driving action of the wind wheel 30, the air flow outside the air conditioner 100 enters the housing 20 of the air conditioner 100 from the air inlet 50 located above the heat exchanger assembly 10, and when the external air flows to the front heat exchanger 1, the air flow speed on the first air passing area 13 between the first row of heat exchange tubes 11 on the windward side is relatively fast, wherein the first air passing area 13 located at the upper end of the front heat exchanger 1 is firstly contacted with the external air flow, the air flow speed of the air flow in the first air passing area 13 located at the upper end of the front heat exchanger 1 is relatively fast, the air flow speed of the air flow in the air flow passing area is still relatively fast when the air flow flows through the first air passing area 13 to the corresponding second air passing area 14, the air flow speed of the air flow in the air flow passing area is gradually reduced when the air flow flows from the air inlet 50 to the first air passing area 13 located at the lower end of the front heat exchanger 1, and the air flow speed of the air flow in the lower end of the first air passing area 13 is relatively slow, and the air flow speed of the air flow in the air flow passing area is reduced when the air flow in the lower end of the air flow passes through the first air passing area 13, and the air flow speed of the air passing area is reduced in the air flow speed is reduced when the air flow is flowing through the air flow in the air passing area is in the air passing area at the lower air passing area 1.

As shown in fig. 2 and 3, the bridge pieces of the over-wind region of the third region 33 are 4-6 spaced apart in the direction from the windward side to the leeward side, the bridge pieces of the over-wind region of the fourth region 34 are 3-5 spaced apart in the direction from the windward side to the leeward side, the bridge pieces of the over-wind region of the fifth region 35 are 3-4 spaced apart in the direction from the windward side to the leeward side, and the bridge pieces of the over-wind region of the sixth region 36 are 2-3 spaced apart in the direction from the windward side to the leeward side. It will be appreciated that the blades of the over-wind region of the third region 33 may be 4, 5 or 6 spaced apart in the direction of the windward side to the leeward side, the blades of the over-wind region of the fourth region 34 may be 3, 4 or 5 spaced apart in the direction of the windward side to the leeward side, the blades of the over-wind region of the fifth region 35 may be 3 or 4 spaced apart in the direction of the windward side to the leeward side, and the blades of the over-wind region of the sixth region 36 may be 2 or 3 spaced apart in the direction of the windward side to the leeward side. At this time, the bridge pieces arranged in the third area 33 are more than the bridge pieces arranged in the fourth area 34, the bridge pieces arranged in the third area 33 are more than the bridge pieces arranged in the fifth area 35, and the bridge pieces arranged in the fifth area 35 are more than the bridge pieces arranged in the sixth area 36, so that the air flow can be disturbed better when the air flow flows through the first air passing area 13 and the second air passing area 14, the flowing direction of the air flow is changed, the air flow can perform sufficient heat exchange with the heat exchange tubes on the front heat exchanger 1, and the heat exchange effect of the front heat exchanger 1 is further improved.

In some embodiments of the present utility model, all heat exchange tubes of the heat exchanger assembly 10 have the same pore size, the heat exchange tubes form the heat exchange flow path 4, the heat exchange flow path 4 includes a first flow path 41, a second flow path 42, a first branch path 43, a second branch path 44, a third branch path 45 and a fourth branch path 46, the first flow path 41, the second flow path 42, the first branch path 43, the second branch path 44, the third branch path 45 and the fourth branch path 46 flow through at least one heat exchange tube, wherein the first flow path 41 and the second flow path 42 flow through the heat exchange tubes on the windward side of the heat exchanger assembly 10, one ends of the first branch path 43 and the second branch path 44 are communicated with one end of the first flow path 41, one ends of the third branch path 45 and the fourth branch path 46 are communicated with one end of the second flow path 42, the refrigerant flows into the first flow path 41 and the second flow path 42 simultaneously, the refrigerant flowing out of the first flow path 41 flows into the first branch path 43 and the second branch path 44 simultaneously, and the refrigerant flowing out of the second branch path 42 flows into the third branch path 45 and the fourth branch path 46 simultaneously under refrigeration conditions.

For example, as shown in fig. 8, in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are arranged in a plurality of rows, the plurality of rows of heat exchange tubes on the front heat exchanger 1 include a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the plurality of rows of heat exchange tubes on the rear heat exchanger 2 include a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the first row of heat exchange tubes 11 is located on the windward side of the second row of heat exchange tubes 12, the third row of heat exchange tubes 21 is located on the windward side of the fourth row of heat exchange tubes 22, the front heat exchanger 1 has 26 heat exchange tubes, and the rear heat exchanger 2 has 12 heat exchange tubes. The first flow path 41 includes 4 heat exchange tubes in the first column of heat exchange tubes 11, the second flow path 42 includes 4 heat exchange tubes in the first column of heat exchange tubes 11, the first branch path 43 includes 2 heat exchange tubes in the third column of heat exchange tubes 21, 2 heat exchange tubes in the fourth column of heat exchange tubes 22, and 2 heat exchange tubes in the second column of heat exchange tubes 12, the second branch path 44 includes 4 heat exchange tubes in the third column of heat exchange tubes 21 and 4 heat exchange tubes in the fourth column of heat exchange tubes 22, the third branch path 45 includes 1 heat exchange tube in the first column of heat exchange tubes 11 and 7 heat exchange tubes in the second column of heat exchange tubes 12, and the fourth branch path 46 includes 4 heat exchange tubes in the first column of heat exchange tubes 11 and 4 heat exchange tubes in the second column of heat exchange tubes 12. As shown in table 3 below, the APF of the air conditioner 100 can be increased by 4.06% at this time, and the APF of the air conditioner 100 is increased more.

TABLE 3 APF variation of air conditioner with same heat exchange tube diameter and heat exchange flow path 2 in 4 out

In some embodiments of the present utility model, the first heat exchange tube is located on the windward side of the front heat exchanger 1 or the rear heat exchanger 2, the heat exchange tube forms a heat exchange flow path 4, the heat exchange flow path 4 includes a first flow path 41, a first branch 43, a second branch 44, a third branch 45, and a fourth branch 46, the first flow path 41 flows through the first heat exchange tube, the first branch 43 to the fourth branch 46 flow through at least one second heat exchange tube, the refrigerant flows to the first flow path 41 in a cooling condition, and the refrigerant flowing out of the first flow path 41 is split to flow into the first branch 43, the second branch 44, the third branch 45, and the fourth branch 46 simultaneously.

For example, as shown in fig. 9, in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are arranged in a plurality of rows, the plurality of rows of heat exchange tubes on the front heat exchanger 1 include a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the plurality of rows of heat exchange tubes on the rear heat exchanger 2 include a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the first row of heat exchange tubes 11 is located on the windward side of the second row of heat exchange tubes 12, the third row of heat exchange tubes 21 is located on the windward side of the fourth row of heat exchange tubes 22, the front heat exchanger 1 has 26 heat exchange tubes, the rear heat exchanger 2 has 12 heat exchange tubes, and 8 heat exchange tubes having a larger pore size among the 26 heat exchange tubes of the front heat exchanger 1. The first flow path 41 includes 8 heat exchange tubes having a larger aperture in the first row of heat exchange tubes 11, the first branch path 43 includes 2 heat exchange tubes in the third row of heat exchange tubes 21, 2 heat exchange tubes in the fourth row of heat exchange tubes 22, and 2 heat exchange tubes in the second row of heat exchange tubes 12, the second branch path 44 includes 4 heat exchange tubes in the third row of heat exchange tubes 21 and 4 heat exchange tubes in the fourth row of heat exchange tubes 22, the third branch path 45 includes 1 heat exchange tube in the first row of heat exchange tubes 11 and 7 heat exchange tubes in the second row of heat exchange tubes 12, and the fourth branch path 46 includes 4 heat exchange tubes in the first row of heat exchange tubes 11 and 4 heat exchange tubes in the second row of heat exchange tubes 12. The refrigerant flows from the first heat exchange tube with larger diameter to the second heat exchange tube with smaller diameter, so that the refrigerant in the second heat exchange tube is ensured to be sufficient, and the refrigerant in the heat exchange flow path 4 flows smoothly. As shown in table 4 below, the APF of the air conditioner 100 can be increased by 4.8% at this time, and the APF of the air conditioner 100 is increased more.

Table 4 change of APF of air conditioner in inlet and outlet of heat exchange flow path 1 with different heat exchange tube pore diameters

In some embodiments of the present utility model, the first heat exchange tube is located on the windward side of the front heat exchanger 1 or the rear heat exchanger 2, the heat exchange tube is provided with a heat exchange flow path 4, the heat exchange flow path 4 comprises a first flow path 41, a second flow path 42, a first branch 43, a second branch 44, a third branch 45 and a fourth branch 46, the first flow path 41 and the second flow path 42 flow through at least one first heat exchange tube, the first branch 43, the second branch 44, the third branch 45 and the fourth branch 46 flow through at least one second heat exchange tube, one end of the first branch 43 and one end of the second branch 44 are communicated with one end of the first flow path 41, one end of the third branch 45 and one end of the fourth branch 46 are communicated with one end of the second flow path 42, and in a refrigeration condition, the refrigerant flows into the first flow path 41 and the second flow path 42 simultaneously, the refrigerant flow from the first flow path 41 flows into the first branch 43 and the second branch 44 simultaneously, and the refrigerant flow from the second flow path 42 flows into the third branch 45 and the fourth branch 46 simultaneously.

For example, as shown in fig. 9, in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are arranged in a plurality of rows, the plurality of rows of heat exchange tubes on the front heat exchanger 1 include a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the plurality of rows of heat exchange tubes on the rear heat exchanger 2 include a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the first row of heat exchange tubes 11 is located on the windward side of the second row of heat exchange tubes 12, the third row of heat exchange tubes 21 is located on the windward side of the fourth row of heat exchange tubes 22, the front heat exchanger 1 has 26 heat exchange tubes, the rear heat exchanger 2 has 12 heat exchange tubes, and 8 heat exchange tubes having a larger pore size among the 26 heat exchange tubes of the front heat exchanger 1. The first flow path 41 includes 4 heat exchange tubes having a larger hole diameter in the first row of heat exchange tubes 11, the second flow path 42 includes 4 heat exchange tubes having a larger hole diameter in the first row of heat exchange tubes 11, the first branch path 43 includes 2 heat exchange tubes in the third row of heat exchange tubes 21, 2 heat exchange tubes in the fourth row of heat exchange tubes 22, and 2 heat exchange tubes in the second row of heat exchange tubes 12, the second branch path 44 includes 4 heat exchange tubes in the third row of heat exchange tubes 21 and 4 heat exchange tubes in the fourth row of heat exchange tubes 22, the third branch path 45 includes 1 heat exchange tube in the first row of heat exchange tubes 11 and 7 heat exchange tubes in the second row of heat exchange tubes 12, and the fourth branch path 46 includes 4 heat exchange tubes in the first row of heat exchange tubes 11 and 4 heat exchange tubes in the second row of heat exchange tubes 12. The refrigerant flows from the first heat exchange tube with larger diameter to the second heat exchange tube with smaller diameter, so that the refrigerant in the second heat exchange tube is ensured to be sufficient, and the refrigerant in the heat exchange flow path 4 flows smoothly. And as shown in table 5 below, the APF of the air conditioner 100 may be increased by 2.17% at this time, and the APF of the air conditioner 100 may be increased to some extent.

TABLE 5 APF variation of air conditioner with different heat exchange tube apertures and heat exchange flow path 2 in and 4 out

A heat exchanger assembly 10 according to three specific embodiments of the present utility model is described below with reference to the accompanying drawings. It is to be understood that the following description is exemplary only, and is intended to be illustrative of the utility model and not to be construed as limiting the utility model.

Example 1

Specifically, as shown, the heat exchanger assembly 10 includes a front heat exchanger 1 and a rear heat exchanger 2.

The back heat exchanger 2 leans backwards in the direction from top to bottom, so that the length of the back heat exchanger 2 is longer under the height limit of the back heat exchanger 2 from top to bottom, the upper end of the front heat exchanger 1 is connected with the upper end of the back heat exchanger 2, heat exchange pipes are respectively arranged on the front heat exchanger 1 and the back heat exchanger 2 in a penetrating way, two adjacent heat exchange pipes on the front heat exchanger 1 and the back heat exchanger 2 form a U-shaped pipe, the included angle between the back heat exchanger 2 and the horizontal direction is A, and the requirements are satisfied: a is more than or equal to 49 degrees and less than or equal to 53 degrees, the height of the rear heat exchanger 2 is H1, the height of the front heat exchanger 1 is H2, and the requirements are satisfied: H2/H1 is more than or equal to 2 and less than or equal to 2.2.

The included angle between the rear heat exchanger 2 and the horizontal direction is not smaller than 49 degrees, so that the length of the rear heat exchanger 2 is longer under the same height limit of the rear heat exchanger 2, the positions on the rear heat exchanger 2 where heat exchange pipes can be arranged are more, and the heat exchange effect of the rear heat exchanger 2 can be ensured; the included angle between the rear heat exchanger 2 and the horizontal direction is not more than 53 degrees, so that the position limitation of the wind wheel 30 on the height direction during the installation of the rear heat exchanger 2 can be avoided, the depth of the rear heat exchanger 2 at the rear side of the wind wheel 30 can be avoided to be deeper, the poor airflow flow at the bottom of the rear heat exchanger 2 is avoided, and the poor heat exchange effect at the bottom of the rear heat exchanger 2 is avoided. The ratio of the height of the front heat exchanger 1 to the height of the rear heat exchanger 2 is not less than 2, so that the height of the front heat exchanger 1 is at least twice that of the rear heat exchanger 2, the height of the front heat exchanger 1 is higher, the front heat exchanger 1 can better and semi-surround the wind wheel 30, the air flow entering the air conditioner 100 passes through the front heat exchanger 1 and the rear heat exchanger 2, exchanges heat with the front heat exchanger 1 and the rear heat exchanger 2, is blown out from the air outlet 40 by the wind wheel 30, and can be fully exchanged; the ratio of the height of the front heat exchanger 1 to the height of the rear heat exchanger 2 is not more than 2.2, so that the height of the front heat exchanger 1 can be more reasonable, and the layout of the heat exchanger assembly 10 in the air conditioner 100 can be more reasonable.

The front heat exchanger 1 is in a shape of a protruding arc forward, at the moment, air flows into the air conditioner 100 from the air inlet 50 under the drive of the wind wheel 30, and when the air flows through the front heat exchanger 1, the contact between the air flow and the folded angle of the front heat exchanger 1 can be avoided, so that the air flow is prevented from generating a sharper whistle. At this time, the space utilization of the front heat exchanger 1 is better, the problem that accumulated water is easy to occur at the outer corners of the bending parts can be reduced, the phenomenon that accumulated water drops into the air duct of the air conditioner 100 to blow water can be avoided as much as possible, and the quality of the air conditioner 100 is improved.

In the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 are arranged in a plurality of rows, the centers of the heat exchange tubes in each row are positioned on the same arc line protruding forwards, and the plurality of arc lines on which the centers of the heat exchange tubes in the plurality of rows on the front heat exchanger 1 are positioned are concentrically arranged. At this time, the same arc line where the center of the heat exchange tube is close to the shape of the front heat exchanger 1, so that the layout of the heat exchange tube in the front heat exchanger 1 is reasonable, and the heat exchange effect of the front heat exchanger 1 can be ensured. The distance between each heat exchange tube in each row of heat exchange tubes and the heat exchange tube in the other row closest to the heat exchange tube is the same, so that the layout of the heat exchange tubes in the front heat exchanger 1 is more reasonable, and the heat exchange effect of the front heat exchanger 1 can be ensured.

In the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 are arranged in a plurality of rows, each row of heat exchange tubes comprises a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the first row of heat exchange tubes 11 are positioned on the windward side of the second row of heat exchange tubes 12, the distance between the centers of two adjacent heat exchange tubes in the first row of heat exchange tubes 11 is M1, the distance between the centers of two adjacent heat exchange tubes in the second row of heat exchange tubes 12 is M2, and the requirements are satisfied: m2 > M1; the distance between the center of the first row of heat exchange tubes 11 and the center of the second row of heat exchange tubes 12 in the direction of the windward side to the leeward side is M3, and satisfies: m3=m1, or m3=m2.

It will be appreciated that the distance between the centers of two adjacent heat exchange tubes in the second row of heat exchange tubes 12 is greater than the distance between the centers of two adjacent heat exchange tubes in the first row of heat exchange tubes 11. For example, in the cooling mode, the external air flow enters the air conditioner 100, the air flow flows to the front heat exchanger 1 and exchanges heat with the refrigerant in the first row of heat exchange tubes 11, the refrigerant in the first row of heat exchange tubes 11 absorbs heat by evaporation, the air flow gradually cools, the cooled air flow flows to the second row of heat exchange tubes 12 and exchanges heat with the refrigerant in the second row of heat exchange tubes 12, and at this time, the amount of heat exchange between the air flow and the refrigerant in the second row of heat exchange tubes 12 is small. By setting the distance between two adjacent heat exchange tubes in the second row of heat exchange tubes 12 of the front heat exchanger 1 larger, the number of the second row of heat exchange tubes 12 used while ensuring the heat exchange effect is smaller, and the manufacturing cost of the heat exchanger assembly 10 can be saved.

In the direction from the windward side to the leeward side, each heat exchange tube in the first row of heat exchange tubes 11 has a second row of heat exchange tubes 12 close thereto, the distance between the center of the first row of heat exchange tubes 11 and the center of the second row of heat exchange tubes 12 closer thereto is M3, the distance between the center of the first row of heat exchange tubes 11 and the center of the second row of heat exchange tubes 12 closer thereto may be the same as the distance between the centers of two adjacent heat exchange tubes in the first row of heat exchange tubes 11 of the front heat exchanger 1, or the distance between the center of the first row of heat exchange tubes 11 and the center of the second row of heat exchange tubes 12 closer thereto may be the same as the distance between the centers of two adjacent heat exchange tubes in the second row of heat exchange tubes 12 of the front heat exchanger 1, so that the distance between the respective heat exchange tubes of the front heat exchanger 1 may be more regular, and the front heat exchanger 1 may be more standardized in processing and assembly.

The number of the heat exchange tubes of the front heat exchanger 1 is N1, the number of the heat exchange tubes of the rear heat exchanger 2 is N2, and the following conditions are satisfied: N1/N2 is more than or equal to 1.1 and less than or equal to 3. The ratio of the number of the heat exchange tubes of the front heat exchanger 1 to the number of the heat exchange tubes of the rear heat exchanger 2 is not less than 1.1, so that the number of the heat exchange tubes on the front heat exchanger 1 with higher height is more, more refrigerant or high-pressure gas can exchange heat with the outside in the front heat exchanger 1, the heat exchange efficiency of the front heat exchanger 1 is higher, and the heat exchange efficiency of the heat exchanger assembly 10 is higher; the ratio of the number of the heat exchange tubes of the front heat exchanger 1 to the number of the heat exchange tubes of the rear heat exchanger 2 is not more than 3, so that the layout of the heat exchange tubes in the front heat exchanger 1 is reasonable, a certain distance exists between the heat exchange tubes in the front heat exchanger 1, the number of the heat exchange tubes used by the front heat exchanger 1 is less while the heat exchange effect is ensured, and the manufacturing cost of the heat exchanger assembly 10 can be saved.

In the direction from the windward side to the leeward side, the heat exchange tubes on the rear heat exchanger 2 are arranged in a plurality of rows, the plurality of rows of heat exchange tubes comprise a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the third row of heat exchange tubes 21 are positioned on the windward side of the fourth row of heat exchange tubes 22, it is understood that in the rear heat exchanger 2, the distance between the centers of two adjacent heat exchange tubes in the third row of heat exchange tubes 21, the distance between the centers of two adjacent heat exchange tubes in the fourth row of heat exchange tubes 22 and the distance between the center of the third row of heat exchange tubes 21 and the center of the fourth row of heat exchange tubes 22 which are closer to the center of the third row of heat exchange tubes 21 can be M1 or M2, and the tube distances on the front heat exchanger 1 and the rear heat exchanger 2 in the heat exchanger assembly 10 are only M1 and M2, so that the distances between the respective heat exchange tubes of the heat exchanger assembly 10 can be regulated, and the heat exchanger assembly 10 can be standardized during processing and assembly

The heat exchange tube of at least one of the front heat exchanger 1 and the rear heat exchanger 2 includes a first heat exchange tube and a second heat exchange tube, and the aperture of the first heat exchange tube is larger than that of the second heat exchange tube. When the apertures of the first heat exchange tube and the second heat exchange tube are different, the lifting rate of the whole machine APF is higher, and when the number of the first heat exchange tubes is 3, 4 and 6, the whole machine APF is higher.

The aperture of the first heat exchange tube is D31, and the following conditions are satisfied: d31 is more than or equal to 5.8 and less than or equal to 7.5mm. The aperture of the first heat exchange tube is not smaller than 5.8mm, so that more heat exchange media in the first heat exchange tube can be used, the heat exchange efficiency of the first heat exchange tube is higher, and the heat exchange efficiency of the heat exchanger assembly 10 is higher; the aperture of the first heat exchange tube is not more than 7.5mm, so that the problem that the distance between the heat exchange tubes is smaller due to the fact that the aperture of the first heat exchange tube is larger can be avoided, and the heat exchange efficiency of the heat exchange tubes is prevented from being influenced. The aperture of the second heat exchange tube is D32, and the following conditions are satisfied: d32 is more than or equal to 3 and less than or equal to 5.5mm. The aperture of the second heat exchange tube is not smaller than 3mm, so that enough heat exchange medium can flow through the second heat exchange tube to exchange heat with the air flow, the heat exchange efficiency of the second heat exchange tube can be ensured, and the heat exchange efficiency of the heat exchanger assembly 10 is further ensured; the aperture of the second heat exchange tube is not more than 5.5mm, so that the phenomenon that the distance between the heat exchange tubes is smaller due to the fact that the aperture of the second heat exchange tube is larger can be avoided, and the influence on the heat exchange efficiency of the heat exchange tubes is avoided.

In some embodiments of the present utility model, the front heat exchanger 1 and the rear heat exchanger 2 each include a plurality of spaced fins 3, and heat exchange tubes are provided to pass through the fins 3, and heat exchange medium flowing in the heat exchange tubes can transfer heat to the fins 3, so that heat exchange areas of the front heat exchanger 1 and the rear heat exchanger 2 can be increased. For example, in the cooling mode, the refrigerant flows in the heat exchange tube, the cold of the refrigerant can be emitted to the fins 3 through the heat exchange tube, the external air flow enters the air conditioner 100, the air flow flows to the front heat exchanger 1 and the rear heat exchanger 2 and exchanges heat with the refrigerant in the heat exchange tube, the refrigerant in the heat exchange tube evaporates to absorb heat, and at the same time, the air flow can exchange heat with the fins 3, gradually cool, and flows out from the air outlet 40 under the driving of the wind wheel 30.

Further, the front heat exchanger 1 is provided with a plurality of rows of heat exchange tubes which are sequentially arranged in the direction from the windward side to the leeward side, the rear heat exchanger 2 is provided with a plurality of rows of heat exchange tubes which are sequentially arranged in the direction from the windward side to the leeward side, and the heat exchange tubes can be fixed at a plurality of positions on the front heat exchanger 1 and the rear heat exchanger 2 by arranging a plurality of spaced fins 3, so that the positions of the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are more reliable, and the heat exchange tubes are more reliably installed. The area between two adjacent heat exchange tubes in each row of heat exchange tubes on the fin 3 is an air passing area, the air passing area is provided with bridge pieces, the two ends of the bridge pieces along the arrangement direction of each row of heat exchange tubes are connected with the fin 3, and the middle part of the bridge pieces is spaced from the fin 3. The bridge piece includes the top sheet and corresponds support piece with it, the top sheet is to the position fretwork of fin 3 between perpendicular to fin 3 and the position fretwork that sets up the bridge piece on the fin 3, through setting up the bridge piece, can disturb the air current when the air current flows through the wind district, change the flow direction of air current, make the air current carry out abundant heat exchange with the heat exchange tube, further promote the heat exchange effect of fin 3, and the condensation water that the heat exchange in-process produced drip easily, compromise simultaneously air conditioner 100 frosting problem, make fin 3 positions more be convenient for defrost.

In some embodiments of the present utility model, the heat exchanger 2 has a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22 sequentially arranged in a direction from a windward side to a leeward side, the over-wind region between two adjacent heat exchange tubes in the third row of heat exchange tubes 21 on the fin 3 is a third over-wind region 23, the over-wind region between two adjacent heat exchange tubes in the fourth row of heat exchange tubes 22 on the fin 3 is a fourth over-wind region 24, the fin 3 of the heat exchanger 2 includes a first region 31 and a second region 32, each of the first region 31 and the second region 32 includes the third over-wind region 23 and the fourth over-wind region 24, the third over-wind region 23 of the first region 31 is located above the third over-wind region 23 of the second region 32, the fourth over-wind region 24 of the first region 31 is located above the fourth over-wind region 24 of the second region 32, the lower end of the third over-wind region 23 of the first region 31 is located below the fourth over-wind region 24 of the windward side of the first region 31, and the second over-wind region is located above the windward side of the fourth over-region 32, and the second over-wind region of the fourth over-wind region 32 is located on the windward side of the fourth over-region 3 is spaced-apart from the fourth region 3 to the windward side of the fourth region on the windward side of the fourth region 32.

Under the driving action of the wind wheel 30, the air flow outside the air conditioner 100 enters the inside of the shell 20 of the air conditioner 100 from the air inlet 50 positioned above the heat exchanger assembly 10, when the external air flows to the rear heat exchanger 2, the air flow speed on the third air passing area 23 between the third row of heat exchange tubes 21 on the windward side is higher, wherein the third air passing area 23 positioned at the upper end of the rear heat exchanger 2 is firstly contacted with the external air flow, the air flow speed of the air flow of the third air passing area 23 positioned at the upper end of the rear heat exchanger 2 is higher, the air flow speed of the air flow is still higher when the air flow flows from the air inlet 50 to the corresponding fourth air passing area 24 after flowing through the third air passing area 23, and the air flow speed is gradually reduced when the air flow flows from the air inlet 50 to the third air passing area 23 positioned at the lower end of the rear heat exchanger 2, so that the air flow speed of the air flow at the lower end of the third air passing area 23 of the rear heat exchanger 2 is relatively lower. At this time, the airflow velocity in the first area 31 is greater than that in the second area 32, and the bridge pieces in the first area 31 are greater than those in the second area 32, so that the airflow can be better disturbed when flowing through the third and fourth air-passing areas 23 and 24, and the flowing direction of the airflow is changed, so that the airflow can perform sufficient heat exchange with the heat exchange tubes on the rear heat exchanger 2, and the heat exchange effect of the rear heat exchanger 2 is further improved.

The front heat exchanger 1 is provided with a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12 which are sequentially arranged in the direction from the windward side to the leeward side, the windward region between two adjacent heat exchange tubes in the first row of heat exchange tubes 11 on the fin 3 is a first windward region 13, the windward region between two adjacent heat exchange tubes in the first row of heat exchange tubes 11 on the fin 3 is a second windward region 14, the fin 3 of the front heat exchanger 1 comprises a third region 33, a fourth region 34, a fifth region 35 and a sixth region 36, the third region 33 comprises the first windward region 13 and the second windward region 14, the fourth region 34 comprises the second windward region 14, the fifth region 35 comprises the first windward region 13, the sixth region 36 comprises the second windward region 14, the first windward region 13 of the third region 33 is positioned above the first windward region 13 of the fifth region 35, the second windward region 14 is positioned above the second windward region 14 of the fourth region 34, the fifth region 36 is positioned below the fourth region 34, the fourth region 34 is positioned below the fourth region 34, and the fourth region 34 is positioned above the fourth region 34 at the lower end of the fourth region 34.

The bridge pieces of the over-wind region of the third region 33 are 4-6 spaced apart in the direction of the windward side to the leeward side, the bridge pieces of the over-wind region of the fourth region 34 are 3-5 spaced apart in the direction of the windward side to the leeward side, the bridge pieces of the over-wind region of the fifth region 35 are 3-4 spaced apart in the direction of the windward side to the leeward side, and the bridge pieces of the over-wind region of the sixth region 36 are 2-3 spaced apart in the direction of the windward side to the leeward side. At this time, the bridge pieces arranged in the third area 33 are more than the bridge pieces arranged in the fourth area 34, the bridge pieces arranged in the third area 33 are more than the bridge pieces arranged in the fifth area 35, and the bridge pieces arranged in the fifth area 35 are more than the bridge pieces arranged in the sixth area 36, so that the air flow can be disturbed better when the air flow flows through the first air passing area 13 and the second air passing area 14, the flowing direction of the air flow is changed, the air flow can perform sufficient heat exchange with the heat exchange tubes on the front heat exchanger 1, and the heat exchange effect of the front heat exchanger 1 is further improved.

The heat exchange tube of the heat exchanger assembly 10 has the same pore diameter, the heat exchange tube comprises a heat exchange flow path 4, the heat exchange flow path 4 comprises a first flow path 41, a second flow path 42, a first branch 43, a second branch 44, a third branch 45 and a fourth branch 46, the first flow path 41, the second flow path 42, the first branch 43, the second branch 44, the third branch 45 and the fourth branch 46 flow through at least one heat exchange tube, wherein the first flow path 41 and the second flow path 42 flow through the heat exchange tube on the windward side of the heat exchanger assembly 10, one ends of the first branch 43 and the second branch 44 are communicated with one end of the first flow path 41, one ends of the third branch 45 and the fourth branch 46 are communicated with one end of the second flow path 42, under the refrigeration condition, the refrigerant flows into the first flow path 41 and the second flow path 42 at the same time, the refrigerant flowing out of the first flow path 41 flows into the first branch 43 and the second branch 44 at the same time, and the refrigerant flowing out of the second flow path 42 at the same time into the third branch 45 and the fourth branch 46 at the same time.

For example, as shown in fig. 8, in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are arranged in a plurality of rows, the plurality of rows of heat exchange tubes on the front heat exchanger 1 include a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the plurality of rows of heat exchange tubes on the rear heat exchanger 2 include a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the first row of heat exchange tubes 11 is located on the windward side of the second row of heat exchange tubes 12, the third row of heat exchange tubes 21 is located on the windward side of the fourth row of heat exchange tubes 22, the front heat exchanger 1 has 26 heat exchange tubes, and the rear heat exchanger 2 has 12 heat exchange tubes. The first flow path 41 includes 4 heat exchange tubes in the first column of heat exchange tubes 11, the second flow path 42 includes 4 heat exchange tubes in the first column of heat exchange tubes 11, the first branch path 43 includes 2 heat exchange tubes in the third column of heat exchange tubes 21, 2 heat exchange tubes in the fourth column of heat exchange tubes 22, and 2 heat exchange tubes in the second column of heat exchange tubes 12, the second branch path 44 includes 4 heat exchange tubes in the third column of heat exchange tubes 21 and 4 heat exchange tubes in the fourth column of heat exchange tubes 22, the third branch path 45 includes 1 heat exchange tube in the first column of heat exchange tubes 11 and 7 heat exchange tubes in the second column of heat exchange tubes 12, and the fourth branch path 46 includes 4 heat exchange tubes in the first column of heat exchange tubes 11 and 4 heat exchange tubes in the second column of heat exchange tubes 12, and APF of the air conditioner 100 is improved more.

Example two

As shown in fig. 9, the present embodiment is substantially the same as the first embodiment in that the same components are denoted by the same reference numerals, except that the first heat exchange tube is located on the windward side of the front heat exchanger 1 or the rear heat exchanger 2, the heat exchange tube is formed into a heat exchange flow path 4, the heat exchange flow path 4 includes a first flow path 41, a first branch 43, a second branch 44, a third branch 45, and a fourth branch 46, the first flow path 41 flows through the first heat exchange tube, the first branch 43 to the fourth branch 46 flow through at least one second heat exchange tube, and under the cooling condition, the refrigerant flows into the first flow path 41, and the refrigerant flowing out of the first flow path 41 flows into the first branch 43, the second branch 44, the third branch 45, and the fourth branch 46 at the same time.

For example, in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are arranged in a plurality of rows, the plurality of rows of heat exchange tubes on the front heat exchanger 1 include a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the plurality of rows of heat exchange tubes on the rear heat exchanger 2 include a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the first row of heat exchange tubes 11 is located on the windward side of the second row of heat exchange tubes 12, the third row of heat exchange tubes 21 is located on the windward side of the fourth row of heat exchange tubes 22, the front heat exchanger 1 has 26 heat exchange tubes, the rear heat exchanger 2 has 12 heat exchange tubes, and 8 heat exchange tubes having a larger pore diameter are included in the 26 heat exchange tubes of the front heat exchanger 1. The first flow path 41 includes 8 heat exchange tubes having a larger aperture in the first row of heat exchange tubes 11, the first branch path 43 includes 2 heat exchange tubes in the third row of heat exchange tubes 21, 2 heat exchange tubes in the fourth row of heat exchange tubes 22, and 2 heat exchange tubes in the second row of heat exchange tubes 12, the second branch path 44 includes 4 heat exchange tubes in the third row of heat exchange tubes 21 and 4 heat exchange tubes in the fourth row of heat exchange tubes 22, the third branch path 45 includes 1 heat exchange tube in the first row of heat exchange tubes 11 and 7 heat exchange tubes in the second row of heat exchange tubes 12, and the fourth branch path 46 includes 4 heat exchange tubes in the first row of heat exchange tubes 11 and 4 heat exchange tubes in the second row of heat exchange tubes 12. The refrigerant flows from the first heat exchange tube with larger diameter to the second heat exchange tube with smaller diameter, so that the refrigerant in the second heat exchange tube is sufficient, the refrigerant in the heat exchange flow path 4 flows smoothly, and the APF of the air conditioner 100 is more promoted.

Example III

As shown in fig. 10, the present embodiment is substantially the same as the first embodiment in that the same components are denoted by the same reference numerals, except that the first heat exchange tube is located on the windward side of the front heat exchanger 1 or the rear heat exchanger 2, the heat exchange tube is configured to form a heat exchange flow path 4, the heat exchange flow path 4 includes a first flow path 41, a second flow path 42, a first branch 43, a second branch 44, a third branch 45 and a fourth branch 46, the first flow path 41 and the second flow path 42 flow through at least one first heat exchange tube, the first branch 43, the second branch 44, the third branch 45 and the fourth branch 46 flow through at least one second heat exchange tube, one ends of the first branch 43 and the second branch 44 are all in communication with one end of the first flow path 41, one ends of the third branch 45 and the fourth branch 46 are all in communication with one end of the second flow path 42, and under a refrigeration condition, the refrigerant flows into the first flow path 41 and the second flow path 42 simultaneously, the refrigerant flowing out of the first flow path 41 and the second branch 44 flow simultaneously flows into the first branch 43 and the second branch 44 and the third branch 45 and the fourth branch 46 simultaneously flow into the third branch 45 and the fourth branch 46.

For example, in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger 1 and the rear heat exchanger 2 are arranged in a plurality of rows, the plurality of rows of heat exchange tubes on the front heat exchanger 1 include a first row of heat exchange tubes 11 and a second row of heat exchange tubes 12, the plurality of rows of heat exchange tubes on the rear heat exchanger 2 include a third row of heat exchange tubes 21 and a fourth row of heat exchange tubes 22, the first row of heat exchange tubes 11 is located on the windward side of the second row of heat exchange tubes 12, the third row of heat exchange tubes 21 is located on the windward side of the fourth row of heat exchange tubes 22, the front heat exchanger 1 has 26 heat exchange tubes, the rear heat exchanger 2 has 12 heat exchange tubes, and 8 heat exchange tubes having a larger pore diameter are included in the 26 heat exchange tubes of the front heat exchanger 1. The first flow path 41 includes 4 heat exchange tubes having a larger hole diameter in the first row of heat exchange tubes 11, the second flow path 42 includes 4 heat exchange tubes having a larger hole diameter in the first row of heat exchange tubes 11, the first branch path 43 includes 2 heat exchange tubes in the third row of heat exchange tubes 21, 2 heat exchange tubes in the fourth row of heat exchange tubes 22, and 2 heat exchange tubes in the second row of heat exchange tubes 12, the second branch path 44 includes 4 heat exchange tubes in the third row of heat exchange tubes 21 and 4 heat exchange tubes in the fourth row of heat exchange tubes 22, the third branch path 45 includes 1 heat exchange tube in the first row of heat exchange tubes 11 and 7 heat exchange tubes in the second row of heat exchange tubes 12, and the fourth branch path 46 includes 4 heat exchange tubes in the first row of heat exchange tubes 11 and 4 heat exchange tubes in the second row of heat exchange tubes 12. The refrigerant flows from the first heat exchange tube with larger diameter to the second heat exchange tube with smaller diameter, so that the refrigerant in the second heat exchange tube is ensured to be sufficient, the refrigerant in the heat exchange flow path 4 flows smoothly, and the APF of the air conditioner 100 can be improved to a certain extent.

An air conditioner 100 according to an embodiment of the present utility model is described below.

According to the air conditioner 100 of the embodiment of the utility model, the air conditioner 100 includes the housing 20 and the heat exchanger assembly 10, the heat exchanger assembly 10 is disposed in the housing 20, and the housing 20 can protect the heat exchanger assembly 10 from being damaged by external force.

According to the air conditioner 100 of the embodiment of the utility model, by connecting the upper end of the rear heat exchanger 2 with the upper end of the front heat exchanger 1, the rear heat exchanger 2 is inclined backward in the top-down direction, the included angle between the rear heat exchanger 2 and the horizontal direction is a, and the following conditions are satisfied: 49 is less than or equal to A is less than or equal to 53, the height of the rear heat exchanger 2 is H1, the height of the front heat exchanger 1 is H2, the requirement that H2/H1 is less than or equal to 2.2 is met, at the moment, the length of the rear heat exchanger 2 is longer under the same height limit, the positions on the rear heat exchanger 2, where heat exchange pipes can be installed, are more, the heat exchange effect of the rear heat exchanger 2 can be ensured, the position limit of the wind wheel 30 in the height direction when the rear heat exchanger 2 is installed can be avoided, the depth of the rear heat exchanger 2 at the rear side of the wind wheel 30 can be avoided to be deeper, the poor airflow flow at the bottom of the rear heat exchanger 2 is avoided, and the poor heat exchange effect at the bottom of the rear heat exchanger 2 is avoided. At this time, the front heat exchanger 1 is higher, the front heat exchanger 1 can better semi-surround the wind wheel 30, so that the air flow entering the air conditioner 100 passes through the front heat exchanger 1 and the rear heat exchanger 2, exchanges heat with the front heat exchanger 1 and the rear heat exchanger 2 and is then blown out from the air outlet 40 by the wind wheel 30, the air flow can be fully exchanged, the wind wheel 30 can drive more air flows after exchanging heat by the front heat exchanger 1 to flow out from the air outlet 40, the heat exchanging effect of the front heat exchanger 1 is better, and the heat exchanging effect of the heat exchanger assembly 10 is better; and the height of the front heat exchanger 1 is reasonable, so that the layout of the heat exchanger assembly 10 in the air conditioner 100 is reasonable, and the annual energy consumption efficiency of the air conditioner 100 is high.

In some embodiments of the present utility model, the height of the housing 20 is H, the width of the housing 20 in the front-rear direction is L and satisfies: H/L is more than or equal to 1.45 and less than or equal to 1.72. It is understood that the ratio of the height of the housing 20 to the width of the housing 20 in the front-rear direction may be 1.45, 1.48, 1.51, 1.54, 1.57, 1.6, 1.63, 1.66, 1.69, or 1.72. The difference between the height of the housing 20 and the width of the housing 20 in the front-rear direction is reasonable, so that the assembly space of the heat exchanger assembly 10 is sufficient, the ratio between the height of the housing 20 and the width of the housing 20 in the front-rear direction is reasonable, and the appearance of the air conditioner 100 is attractive.

The heat exchanger assembly 10 and operation according to embodiments of the present utility model are well known to those of ordinary skill in the art and will not be described in detail herein.

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:

a rear heat exchanger inclined rearward in a top-down direction; and

the front heat exchanger, the upper end of front heat exchanger with the upper end of back heat exchanger is connected, front heat exchanger with all wear to be equipped with the heat exchange tube on the back heat exchanger, contained angle between back heat exchanger and the horizontal direction is A, and satisfies: a is more than or equal to 49 degrees and less than or equal to 53 degrees, the height of the rear heat exchanger is H1, the height of the front heat exchanger is H2, and the requirements are satisfied: H2/H1 is more than or equal to 2 and less than or equal to 2.2.

2. The heat exchanger assembly of claim 1, wherein the front heat exchanger is forwardly convex arcuate; in the direction from the windward side to the leeward side, the heat exchange tubes on the front heat exchanger are arranged in a plurality of rows, and the centers of a plurality of heat exchange tubes in each row of heat exchange tubes are positioned on the same arc line protruding forwards.

3. The heat exchanger assembly of claim 2, wherein a plurality of arcuate lines on the front heat exchanger at which the centers of the rows of heat exchange tubes are located are concentrically disposed.

4. The heat exchanger assembly of claim 1, wherein the heat exchange tubes on the front heat exchanger are arranged in a plurality of rows in a direction from a windward side to a leeward side, the plurality of rows of heat exchange tubes including a first row of heat exchange tubes and a second row of heat exchange tubes, the first row of heat exchange tubes being located on the windward side of the second row of heat exchange tubes, a distance between centers of adjacent two of the heat exchange tubes in the first row of heat exchange tubes being M1, a distance between centers of adjacent two of the heat exchange tubes in the second row of heat exchange tubes being M2, and: m2 > M1.

5. The heat exchanger assembly of claim 4, wherein a distance between a center of the first row of heat exchange tubes and a center of the second row of heat exchange tubes in a direction from a windward side to a leeward side is M3, and is: m3=m1, or m3=m2.

6. The heat exchanger assembly of claim 1, wherein the number of heat exchange tubes of the front heat exchanger is N1 and the number of heat exchange tubes of the rear heat exchanger is N2, and wherein: N1/N2 is more than or equal to 1.1 and less than or equal to 3.

7. The heat exchanger assembly of claim 1, wherein the heat exchange tubes of at least one of the front heat exchanger and the rear heat exchanger comprise a first heat exchange tube and a second heat exchange tube, the first heat exchange tube having a larger aperture than the second heat exchange tube.

8. The heat exchanger assembly of claim 7, wherein the first heat exchange tube has a pore size D31 and satisfies: d31 is more than or equal to 5.8 and less than or equal to 7.5mm; the aperture of the second heat exchange tube is D32, and the requirements are that: d32 is more than or equal to 3 and less than or equal to 5.5mm.

9. The heat exchanger assembly of claim 1, wherein the front heat exchanger and the rear heat exchanger each comprise a plurality of spaced fins, the heat exchange tubes are arranged on the fins in a penetrating manner, the front heat exchanger is provided with a plurality of rows of heat exchange tubes which are sequentially arranged in a direction from a windward side to a leeward side, the rear heat exchanger is provided with a plurality of rows of heat exchange tubes which are sequentially arranged in a direction from the windward side to the leeward side, a region between two adjacent heat exchange tubes in each row of heat exchange tubes on the fins is a wind passing region, the wind passing region is provided with a bridge plate, two ends of the bridge plate along the arrangement direction of the heat exchange tubes in each row are connected with the fins, and the middle part of the bridge plate is spaced from the fins.

10. The heat exchanger assembly according to claim 9, wherein the rear heat exchanger has a third row of heat exchange tubes and a fourth row of heat exchange tubes arranged in order in a direction from a windward side to a leeward side, the over-wind region between two adjacent ones of the heat exchange tubes in the third row of heat exchange tubes on the fin is a third over-wind region, the over-wind region between two adjacent ones of the heat exchange tubes in the fourth row of heat exchange tubes on the fin is a fourth over-wind region, the fins of the rear heat exchanger include a first region and a second region, each of the first region and the second region includes a third over-wind region and a fourth over-wind region, the third over-wind region of the first region is located above the third over-wind region of the second region, the fourth wind passing area of the first area is located above the fourth wind passing area of the second area, the lower end of the third wind passing area of the first area is located at the lower side of the lower end of the fourth wind passing area of the first area, the upper end of the third wind passing area of the second area is located at the lower side of the upper end of the fourth wind passing area of the second area, the bridge pieces of the wind passing area of the first area are 4-6 spaced apart in the direction from the windward side to the leeward side, and the bridge pieces of the wind passing area of the second area are 3-5 spaced apart in the direction from the windward side to the leeward side.

11. The heat exchanger assembly as recited in claim 9 wherein said front heat exchanger has a first row of heat exchange tubes and a second row of heat exchange tubes arranged in sequence in a direction from a windward side to a leeward side, said fin upper region between adjacent ones of said heat exchange tubes in said first row being a first overwind region, said overwind region between adjacent ones of said heat exchange tubes in said first row being a second overwind region, said fin upper region comprising a third region, a fourth region, a fifth region and a sixth region, said third region comprising a first overwind region and a second overwind region, said fourth region comprising a second overwind region, said sixth region comprising a second overwind region, said first overwind region of said third region being located above said first overwind region of said fifth region, said third region being located below said fourth region of said fourth region, said fourth region being located below said fourth region, said fourth region being located above said fourth region, said fourth region being located below said fourth region,

The bridge pieces of the over-wind region of the third region are 4-6 spaced apart in a direction from a windward side to a leeward side, the bridge pieces of the over-wind region of the fourth region are 3-5 spaced apart in a direction from a windward side to a leeward side, the bridge pieces of the over-wind region of the fifth region are 3-4 spaced apart in a direction from a windward side to a leeward side, and the bridge pieces of the over-wind region of the sixth region are 2-3 spaced apart in a direction from a windward side to a leeward side.

12. The heat exchanger assembly of claim 1, wherein all of the heat exchange tubes of the heat exchanger assembly have the same bore diameter, the heat exchange tubes form a heat exchange flow path, the heat exchange flow path includes a first flow path, a second flow path, a first branch path, a second branch path, a third branch path, and a fourth branch path, the first flow path, the second flow path, the first branch path, the third branch path, and the fourth branch path each flow through at least one of the heat exchange tubes, wherein the first flow path and the second flow path flow through the heat exchange tubes on a windward side of the heat exchanger assembly, one ends of the first branch path and the second branch path each communicate with one end of the first flow path, one ends of the third branch path and the fourth branch path each communicate with one end of the second flow path, and refrigerant flows into the first flow path and the second flow path simultaneously in a refrigeration condition, and refrigerant flows out of the first flow path and the second branch path simultaneously flows into the second branch path and the third branch path and the fourth branch path simultaneously.

13. The heat exchanger assembly of claim 7, wherein the first heat exchange tube is located on a windward side of the front heat exchanger or the rear heat exchanger, the heat exchange tube forms a heat exchange flow path including a first flow path, a first branch, a second branch, a third branch, and a fourth branch, the first flow path passing through the first heat exchange tube, the first branch to the fourth branch each passing through at least one of the second heat exchange tubes, refrigerant flowing to the first flow path during a cooling condition, and refrigerant flowing from the first flow path being split to simultaneously flow into the first branch, the second branch, the third branch, and the fourth branch.

14. The heat exchanger assembly of claim 7, wherein the first heat exchange tube is located on an upwind side of the front heat exchanger or the rear heat exchanger, the heat exchange tube is configured to form a heat exchange flow path including a first flow path, a second flow path, a first leg, a second leg, a third leg, and a fourth leg, each of the first flow path and the second flow path flows through at least one of the first heat exchange tube, each of the first leg, the second leg, the third leg, and the fourth leg flows through at least one of the second heat exchange tube, each of one end of the first leg and the second leg communicates with one end of the first flow path, each of the third leg and the fourth leg communicates with one end of the second flow path, and refrigerant flows into the first flow path and the second flow path simultaneously during a refrigeration condition, each of the refrigerant branches flowing from the first flow path flows into the first leg and the second leg simultaneously, and each of the refrigerant branches flows from the third leg and the fourth leg simultaneously.

15. An air conditioner, comprising:

a housing;

the heat exchanger assembly according to any one of claims 1-14, being provided within the housing.

16. The air conditioner according to claim 15, wherein the height of the housing is H, the thickness of the housing in the front-rear direction is L, and 1.45.ltoreq.h/l.ltoreq.1.72 is satisfied.