Heat exchanger assembly and air conditioner having same

Abstract

A heat exchanger assembly and an air conditioner having same. The heat exchanger assembly (10) comprises a front heat exchanger (1) and a rear heat exchanger (2), wherein the rear heat exchanger (2) is located at the rear side of the front heat exchanger (1), and the upper end thereof is connected to the upper end of the front heat exchanger (1); the rear heat exchanger (2) comprises a plurality of first fins (21) spaced apart in the direction of the length of the rear heat exchanger (2) and first heat exchange tubes (22) running through the plurality of first fins (21); and a lap-joint region (211) is provided at the lower end of each first fin (21), and each lap-joint region (211) is provided with reinforcing ribs (2111).

Description

Heat exchanger assemblies and air conditioners having them

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese patent applications No. 202411546770.6 and 202422657565.9, filed on October 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air handling equipment technology, and more particularly to a heat exchanger assembly and an air conditioner having therein. Background Technology

[0004] In the existing technology, the lower end of the rear heat exchanger in the heat exchanger assembly inside the air conditioner has poor strength and is more prone to frost formation, which affects the normal use of the air conditioner. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a heat exchanger assembly that can strengthen the edge of the first fin while also addressing the frosting problem of air conditioners.

[0006] This application also proposes an air conditioner that includes the heat exchanger assembly described above.

[0007] According to an embodiment of this application, a heat exchanger assembly includes a front heat exchanger and a rear heat exchanger. The rear heat exchanger is located behind the front heat exchanger and its upper end is connected to the upper end of the front heat exchanger. The rear heat exchanger includes a plurality of first fins spaced apart along the length of the rear heat exchanger and a first heat exchange tube passing through the plurality of first fins. The lower end of the first fins has an overlapping area, and the overlapping area is provided with reinforcing ribs.

[0008] According to the heat exchanger assembly of this application embodiment, by passing a first heat exchange tube through a plurality of first fins spaced apart along the length of a subsequent heat exchanger, the heat exchange medium flowing in the first heat exchange tube can transfer heat to the first fins, thereby increasing the heat exchange area of ​​the subsequent heat exchanger. Furthermore, the lower end of the first fins has an overlapping area with reinforcing ribs, which strengthens the edge of the first fins and prevents deformation of the overlapping area. Simultaneously, condensate generated during heat exchange can drip down along the overlapping area, addressing the frost problem of the air conditioner and making the overlapping area of ​​the first fins easier to defrost.

[0009] In some embodiments of this application, the reinforcing ribs are a plurality of spaced-apart ribs, which are spaced apart along the width direction of the first fin and protrude from the first fin along the thickness direction of the first fin.

[0010] In some embodiments of this application, a plurality of the reinforcing ribs protrude toward the same side along the thickness direction of the first fin; or, at least two of the plurality of reinforcing ribs protrude toward both sides of the thickness direction of the first fin respectively.

[0011] In some embodiments of this application, the number of reinforcing ribs is 3-8.

[0012] In some embodiments of this application, the heights of the plurality of reinforcing ribs are the same or different; and / or, along the width direction of the first fin, the distance between any two adjacent reinforcing ribs is the same or different; and / or, along the width direction of the first fin, the widths of the plurality of reinforcing ribs are the same or different.

[0013] In some embodiments of this application, the first heat exchange tube is a single column or multiple columns spaced apart along the width direction of the first fin. Each column includes multiple first heat exchange tubes spaced apart along the length direction of the first fin. The reinforcing rib extends along a first direction. The angle between the first direction and the arrangement direction of each column of first heat exchange tubes is A and satisfies: -5°≤A≤10°.

[0014] In some embodiments of this application, the first heat exchange tube is a plurality of rows spaced apart along the width direction of the first fin. The plurality of rows of the first heat exchange tube includes a first row of heat exchange tubes and a second row of heat exchange tubes arranged sequentially from the windward side to the leeward side. Along the length direction of the first fin, the reinforcing rib is disposed opposite to the second row of heat exchange tubes on the leeward side.

[0015] In some embodiments of this application, a bridge plate is provided between the first heat exchange tube at the lowest end of the second row of heat exchange tubes and the reinforcing rib on the first fin. The two ends of the bridge plate are connected to the first fin along the arrangement direction of the second row of heat exchange tubes, and the middle part is spaced apart from the first fin. The number of bridge plates is 2-4.

[0016] In some embodiments of this application, along the arrangement direction of the second column of heat exchange tubes, the length of the bridge plate is L1 and satisfies: 0.8mm≤L1≤1.4mm; and / or, along the thickness direction of the first fin, the height of the bridge plate is H1 and satisfies: 0.6mm≤H1≤0.9mm.

[0017] In some embodiments of this application, a louver structure is provided between the first heat exchange tube located at the lowest end of the second row of heat exchange tubes on the first fin and the reinforcing rib, and the number of the louver structures is 2-4.

[0018] In some embodiments of this application, along the arrangement direction of the second column of heat exchange tubes, the length of the louver structure is L2 and satisfies: 1.2mm≤L2≤1.8mm; and / or, along the thickness direction of the first fin, the height of the louver structure is H2 and satisfies: 0.6mm≤H2≤0.8mm.

[0019] In some embodiments of this application, the width of the first fin is M and satisfies: 25mm≤M≤28mm.

[0020] In some embodiments of this application, the height of the rear heat exchanger is Z1 along the vertical direction and satisfies: 95mm≤Z1≤105mm; and / or the height of the front heat exchanger is Z2 and satisfies: 170mm≤Z2≤180mm.

[0021] In some embodiments of this application, the diameter of the first heat exchange tube is D1, and satisfies: 3.6mm≤D≤7.5mm.

[0022] In some embodiments of this application, the number of the first heat exchange tubes is 12-16.

[0023] In some embodiments of this application, the rear heat exchanger has multiple rows of first heat exchange tubes arranged sequentially from the windward side to the leeward side. The area between two adjacent first heat exchange tubes in each row of the first heat exchange tubes on the first fin is a first air passage area. The first air passage area has a first bridge plate and / or a first louver. The first bridge plate is connected to the first fin at both ends along the arrangement direction of each row of the first heat exchange tubes, and the middle part is spaced apart from the first fin.

[0024] In some embodiments of this application, the front heat exchanger includes a plurality of second fins spaced apart along the length of the front heat exchanger and second heat exchange tubes passing through the plurality of second fins, wherein the number of second heat exchange tubes is 22-28.

[0025] In some embodiments of this application, the front heat exchanger has multiple rows of second heat exchange tubes arranged sequentially from the windward side to the leeward side. The area between two adjacent second heat exchange tubes in each row of the second fins is a second air passage area. The second air passage area has a second bridge plate and / or a second louver. The two ends of the second bridge plate are connected to the second fins along the arrangement direction of each row of heat exchange tubes, and the middle part is spaced apart from the second fins.

[0026] In some embodiments of this application, the tube spacing P1 between two adjacent second heat exchange tubes in each column of the second heat exchange tubes on the front heat exchanger is the same; and / or, the tube spacing between two adjacent second heat exchange tubes in each column of the second heat exchange tubes on the front heat exchanger is P1 or P2; and / or, the tube spacing P3 between two adjacent second heat exchange tubes in each column of the first heat exchange tubes on the rear heat exchanger is the same.

[0027] In some embodiments of this application, louvers are provided at the upper ends of the front heat exchanger and the rear heat exchanger.

[0028] In some embodiments of this application, the distance between the lower end of the overlapping area and the adjacent first heat exchange tube is greater than the distance between two adjacent first heat exchange tubes.

[0029] An air conditioner according to an embodiment of this application includes a housing, a fan wheel, and the aforementioned heat exchanger assembly. The fan wheel is disposed within the housing; the heat exchanger assembly is disposed within the housing, the rear heat exchanger is located on the rear upper side of the fan wheel, and the front heat exchanger is located on the front upper side and front side of the fan wheel.

[0030] According to the air conditioner of this application embodiment, by passing a first heat exchange tube through a plurality of first fins spaced apart along the length of a rear heat exchanger, the heat exchange medium flowing in the first heat exchange tube can transfer heat to the first fins, thereby increasing the heat exchange area of ​​the rear heat exchanger. Furthermore, the lower end of the first fins has an overlapping area with reinforcing ribs, which strengthens the edge of the first fins and prevents deformation of the overlapping area. Simultaneously, condensate generated during heat exchange can drip down along the overlapping area, addressing the frost problem of the air conditioner and making defrosting of the overlapping area of ​​the first fins easier.

[0031] In some embodiments of this application, the dimension of the air conditioner along the vertical direction is H3 and satisfies: 280mm≤H3≤300mm; and / or, the dimension of the air conditioner along the front-back direction is L3 and satisfies: 190mm≤L3≤230mm.

[0032] In some embodiments of this application, the housing includes a support base, and the overlapping area is supported on the support base.

[0033] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 is a cross-sectional view of an air conditioner according to Embodiment 1 of this application;

[0036] Figure 2 is a cross-sectional view of an air conditioner according to Embodiment 2 of this application;

[0037] Figure 3 is a schematic diagram of the bridge plates of the heat exchanger assembly according to Embodiment 1 of this application;

[0038] Figure 4 is a schematic diagram of the louver structure of the heat exchanger assembly according to Embodiment 3 of this application;

[0039] Figure 5 is a front view of the reinforcing ribs of the heat exchanger assembly according to Embodiment 1 of this application;

[0040] Figure 6 is a cross-sectional view of the reinforcing ribs of the heat exchanger assembly according to Embodiment 1 of this application;

[0041] Figure 7 is a cross-sectional view of the reinforcing ribs of the heat exchanger assembly according to Embodiment 4 of this application.

[0042] Reference numerals: 100, Air conditioner; 10, Heat exchanger assembly; 1, Front heat exchanger; 11, Second fin; 111, Second air passage area; 1111, Second bridge fin; 12, Second heat exchange tube; 2, Rear heat exchanger; 21, First fin; 211, Overlap area; 2111, Reinforcing rib; 21111, Airflow guiding structure; 2112, Bridge fin; 21121, Top fin; 21122, Support; 2113, Louver structure; 212, First air passage area; 2121, First bridge fin; 22, First heat exchange tube; 221, First row of heat exchange tubes; 222, Second row of heat exchange tubes; 20, Fan wheel; 30, Shell; 301, Air inlet; 302, Air outlet; 303, Support base. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, 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," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] The heat exchanger assembly 10 according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0047] As shown in Figure 1, the heat exchanger assembly 10 according to an embodiment of this application includes a front heat exchanger 1 and a rear heat exchanger 2.

[0048] Specifically, a heat exchanger can be used in an air conditioner 100, which includes a fan impeller 20. For example, in an indoor unit, the heat exchanger uses a circulating refrigerant (such as Freon) to absorb heat from the indoor air and transfer it to the outside, or vice versa, thereby regulating the indoor temperature. It is a key device for heat transfer in the air conditioner 100. In cooling mode, the heat exchanger causes the refrigerant to evaporate at low pressure, absorbing heat from the indoor air and lowering the indoor temperature. In heating mode, the condenser condenses the refrigerant at high temperature and high pressure, releasing heat and transferring it to the indoor air, thus raising the indoor temperature.

[0049] As shown in Figures 1 and 2, the rear heat exchanger 2 is located behind the front heat exchanger 1 (in the front-rear direction as shown in Figure 1) and its upper end is connected to the upper end of the front heat exchanger 1. The rear heat exchanger 2 includes a plurality of first fins 21 spaced apart along the length of the rear heat exchanger 2 and a first heat exchange tube 22 passing through the plurality of first fins 21. By setting a plurality of spaced first fins 21, the first heat exchange tube 22 can be fixed at multiple positions on the rear heat exchanger 2, which makes the position of the first heat exchange tube 22 on the rear heat exchanger 2 more reliable and makes the installation of the first heat exchange tube 22 more reliable.

[0050] The length direction of the rear heat exchanger 2 is perpendicular to both the vertical and front-back directions shown in Figure 1. The first heat exchange tube 22 includes a straight tube section and connecting pipes connected to both ends of the straight tube section. The connecting pipes are used to connect two adjacent first heat exchange tubes 22 or the inlet and outlet pipes of the heat exchanger assembly 10. The connecting pipes can be U-shaped tubes or half-U-shaped tubes.

[0051] The heat exchange medium flowing in the first heat exchange tube 22 can transfer heat to the first fins 21, increasing the heat exchange area of ​​the rear heat exchanger 2. For example, in cooling mode, refrigerant flows in the first heat exchange tube 22, and the cooling capacity of the refrigerant can be dissipated to the first fins 21 through the first heat exchange tube 22. External airflow enters the air conditioner 100, flows to the rear heat exchanger 2, and exchanges heat with the refrigerant in the first heat exchange tube 22. The refrigerant in the first heat exchange tube 22 evaporates and absorbs heat, while the airflow can also exchange heat with the first fins 21. The airflow gradually cools down and flows out from the air outlet 302 under the drive of the impeller 20.

[0052] As shown in Figures 1 and 2, the lower end of the first fin 21 (in the vertical direction as shown in Figure 1) has an overlapping area 211. The overlapping area 211 is provided with reinforcing ribs 2111, which can strengthen the edge of the first fin 21. At the same time, the condensed water generated during the heat exchange process can drip down along the overlapping area 211, which can also solve the problem of frost formation in the air conditioner 100, making the overlapping area 211 of the first fin 21 easier to defrost.

[0053] According to the heat exchanger assembly 10 of this application embodiment, by passing a first heat exchange tube 22 through a plurality of first fins 21 spaced apart along the length of the rear heat exchanger 2, the heat exchange medium flowing in the first heat exchange tube 22 can transfer heat to the first fins 21, thereby increasing the heat exchange area of ​​the rear heat exchanger 2. Furthermore, the lower end of the first fin 21 has an overlapping area 211, which is provided with reinforcing ribs 2111, which can strengthen the edge of the first fin 21 and prevent deformation of the overlapping area 211. Simultaneously, condensate generated during heat exchange can drip down along the overlapping area 211, addressing the frost problem of the air conditioner 100 and making the overlapping area 211 of the first fin 21 easier to defrost.

[0054] In some embodiments of this application, the distance between the lower end of the overlapping area 211 (i.e., the lower end of the first fin 21) and the adjacent first heat exchange tube 22 is greater than the distance between two adjacent first heat exchange tubes 22. The adjacent first heat exchange tube 22 refers to the first heat exchange tube 22 closest to the lower end of the overlapping area 211; the distance between the lower end of the overlapping area 211 and the adjacent first heat exchange tube 22 refers to the distance between the lower end of the overlapping area 211 and the central axis of the straight pipe section of the adjacent first heat exchange tube 22; the distance between two adjacent first heat exchange tubes 22 can be the distance between the central axes of the straight pipe sections of the two connected first heat exchange tubes 22, or the distance between the central axes of the straight pipe sections of the two closest first heat exchange tubes 22. The greater distance between the lower end of the overlapping area 211 and the adjacent first heat exchange tube 22 facilitates the support of the rear heat exchanger 2 on the air conditioner housing 30 via the overlapping area 211. In addition, a reinforcing rib 2111 is provided in the overlapping area 211 to reduce the deformation of the overlapping area 211.

[0055] In some embodiments of this application, the reinforcing ribs 2111 are multiple spaced apart. Multiple reinforcing ribs 2111 can improve the strength of the first fin 21 at multiple locations. The reinforcing effect of the reinforcing ribs 2111 is better. Multiple reinforcing ribs 2111 are spaced apart along the width direction of the first fin 21. Along the thickness direction of the first fin 21, the reinforcing ribs 2111 protrude from the first fin 21, which can increase the cross-sectional area of ​​the first fin 21 and significantly improve the strength and rigidity of the first fin 21.

[0056] Furthermore, as shown in Figures 1, 6, and 7, multiple reinforcing ribs 2111 protrude towards the same side along the thickness direction of the first fin 21, making the manufacturing of the reinforcing ribs 2111 more convenient. Alternatively, at least two of the multiple reinforcing ribs 2111 protrude towards both sides of the thickness direction of the first fin 21, which can reduce the risk of deformation of the first fin 21 and increase the flatness of the first fin 21.

[0057] Furthermore, the number of reinforcing ribs 2111 is 3-8. It is understandable that the number of reinforcing ribs 2111 can be 3, 4, 5, 6, 7, or 8. Having at least 3 reinforcing ribs 2111 ensures their reinforcing effect, significantly improving the strength and rigidity of the first fin 21. Having no more than 8 reinforcing ribs 2111 avoids overly complex manufacturing of the first fin 21, reducing its manufacturing cost.

[0058] In some embodiments of this application, the heights of the multiple reinforcing ribs 2111 may be the same or different. It is understood that when the heights of the multiple reinforcing ribs 2111 are the same, the reinforcing ribs 2111 can be uniformly manufactured using stamping and other steps, simplifying the manufacturing of the reinforcing ribs 2111 and reducing the manufacturing cost of the first fin 21. When the heights of the multiple reinforcing ribs 2111 are different, the heights of the reinforcing ribs 2111 can be designed according to the shape of the first fin 21, better strengthening the edge of the first fin 21, and allowing condensation generated during heat exchange to drip down along the first fin 21, making the first fin 21 easier to defrost. The heights of the multiple reinforcing ribs 2111 can be selected according to requirements to meet different usage needs.

[0059] In some embodiments of this application, as shown in Figures 5, 6, and 7, along the width direction of the first fin 21, the distance between any two adjacent reinforcing ribs 2111 may be the same or different. It is understood that if the distance between any two adjacent reinforcing ribs 2111 is the same along the width direction of the first fin 21, the reinforcing ribs 2111 can be uniformly manufactured using stamping and other steps, simplifying their manufacturing and reducing the manufacturing cost of the first fin 21. If the distance between any two adjacent reinforcing ribs 2111 is different along the width direction of the first fin 21, the distance between any two adjacent reinforcing ribs 2111 can be designed according to the shape of the first fin 21, better strengthening the edge of the first fin 21, and allowing condensation generated during heat exchange to drip down along the first fin 21, making the first fin 21 easier to defrost. The distance between any two adjacent reinforcing ribs 2111 can be selected according to requirements to meet different usage needs.

[0060] In some embodiments of this application, as shown in Figures 6 and 7, the widths of multiple reinforcing ribs 2111 are the same or different along the width direction of the first fin 21. It is understood that if the widths of the multiple reinforcing ribs 2111 are the same along the width direction of the first fin 21, the reinforcing ribs 2111 can be uniformly processed using steps such as stamping, simplifying the manufacturing of the reinforcing ribs 2111 and reducing the manufacturing cost of the first fin 21. If the widths of the multiple reinforcing ribs 2111 are different along the width direction of the first fin 21, the widths of the reinforcing ribs 2111 can be designed according to the shape of the first fin 21, better strengthening the edge of the first fin 21, and allowing condensation generated during heat exchange to drip down along the first fin 21, making the first fin 21 easier to defrost. The width of the reinforcing ribs 2111 can be selected according to requirements to meet different usage needs.

[0061] In some embodiments of this application, as shown in Figures 1 and 2, the first heat exchange tube 22 is one column or multiple columns spaced apart along the width direction of the first fin 21. Each column includes multiple first heat exchange tubes 22 spaced apart along the length direction of the first fin 21. The number of columns of the first heat exchange tubes 22 can be selected according to parameters such as the power of the air conditioner 100 to meet different usage requirements.

[0062] As shown in Figure 2, the reinforcing rib 2111 extends along a first direction, and the angle between the first direction and the arrangement direction of each row of first heat exchange tubes 22 is A, satisfying -5°≤A≤10°. It can be understood that the angle A between the first direction and the arrangement direction of each row of first heat exchange tubes 22 can be -5°, -4.5°, -4°, -3.5°, -3°, -2.5°, -2°, -1.5°, -1°, -0.5°, 0°, 0.5°, 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, 4.5°, 5°, 5.5°, 6°, 6.5°, 7°, 7°. The angle A between the first direction (0.5°, 8°, 8.5°, 9°, 9.5°, or 10°) and the arrangement direction of each row of first heat exchange tubes 22 is not less than -5°, and the angle A between the first direction and the arrangement direction of each row of first heat exchange tubes 22 is not greater than 10°, so that there can be a certain angle between the first direction and the arrangement direction of each row of first heat exchange tubes 22, and the angle is not too large, so as to ensure the strengthening effect of the reinforcing rib 2111.

[0063] In some embodiments of this application, the reinforcing ribs 2111 extend along a first direction, and the angle between the first direction and the arrangement direction of each row of first heat exchange tubes 22 is A, satisfying -5°≤A≤10°. Multiple reinforcing ribs 2111 are spaced apart along the width direction of the first fins 21. The width direction of the first fins 21 is substantially perpendicular to the arrangement direction of each row of first heat exchange tubes 22, and the length direction of the first fins 21 is substantially parallel to the arrangement direction of the first heat exchange tubes 22. In this embodiment, the reinforcing ribs 2111 extend along the first direction, and the angle between the first direction and the arrangement direction of each row of first heat exchange tubes 22 is A, satisfying -5°≤A≤10°. Multiple reinforcing ribs 2111 are spaced apart along the width direction of the first fins 21, so that the condensate generated on the first heat exchange tubes 22 and the first fins 21 can flow along the length direction of the first fins 21 to the overlapping area 211, and the condensate can flow along the gap between adjacent reinforcing ribs 2111 to the bottom of the heat exchanger 2. As shown in Figure 5, the upper end of the reinforcing rib 2111 has a flow guiding structure 21111; from top to bottom, the width and / or height of the flow guiding structure 21111 gradually increases. The flow guiding structure 21111 can guide condensate.

[0064] In some embodiments of this application, as shown in Figures 1 and 2, the first heat exchange tube 22 consists of multiple rows spaced apart along the width direction of the first fin 21. The multiple rows of the first heat exchange tube 22 include a first row of heat exchange tubes 221 and a second row of heat exchange tubes 222 arranged sequentially from the windward side to the leeward side. Along the length direction of the first fin 21, the reinforcing rib 2111 is arranged opposite to the second row of heat exchange tubes 222 on the leeward side. The reinforcing rib 2111 can be provided on the leeward side to enhance the heat exchange effect on the leeward side.

[0065] In some embodiments of this application, as shown in Figures 1 and 3, a bridge plate 2112 is provided between the first heat exchange tube 22 located at the lowest end of the second row of heat exchange tubes 222 on the first fin 21 and the reinforcing rib 2111. The two ends of the bridge plate 2112 are connected to the first fin 21 along the arrangement direction of the second row of heat exchange tubes 222, and the middle part is spaced apart from the first fin 21. The bridge plate 2112 includes a top plate 21121 and a corresponding support member 21122. The top plate 21121 is connected to the first fin 21. The space between the first fin 21 and the bridge plates 2112 on the first fin 21 is hollowed out. By setting the bridge plates 2112, the airflow can be disturbed when it flows through the space between the lowest heat exchange tube and the reinforcing rib 2111 of the second row of heat exchange tubes 222, changing the direction of airflow and allowing the airflow to fully exchange heat with the first heat exchange tube 22, further improving the heat exchange effect of the first fin 21. The more bridge plates 2112 there are, the better the heat exchange effect of the first fin 21. At the same time, the condensation water generated during the heat exchange process is easy to drip down. By setting the bridge plates 2112, the problem of frost formation on the air conditioner 100 can also be taken into account, making the first fin 21 easier to defrost.

[0066] The number of bridge plates 2112 is 2-4. It can be understood that the number of bridge plates 2112 can be 2, 3, or 4. The number of bridge plates 2112 can be selectively set according to the heat exchange requirements and the area where the bridge plates 2112 can be installed, to meet different usage needs.

[0067] In some embodiments of this application, as shown in Figures 1 and 3, the length of the bridge plate 2112 along the arrangement direction of the second row of heat exchange tubes 222 is L1 and satisfies: 0.8mm ≤ L1 ≤ 1.4mm. It can be understood that the length L1 of the bridge plate 2112 along the arrangement direction of the second row of heat exchange tubes 222 can be 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1mm, 1.05mm, 1.1mm, 1.15mm, 1.2mm, 1.25mm, 1.3mm, 1.35mm, or 1.4mm. Along the arrangement direction of the second row of heat exchange tubes 222, the length L1 of the bridge plate 2112 is not less than 0.8mm, which can ensure the size of the bridge plate 2112 and the heat exchange effect of the first fin 21; along the arrangement direction of the second row of heat exchange tubes 222, the length L1 of the bridge plate 2112 is not greater than 1.4mm, which can avoid the bridge plate 2112 being too large and thus avoid affecting the strength of the first fin 21.

[0068] In some embodiments of this application, as shown in Figures 1 and 3, the height of the bridge plate 2112 along the thickness direction of the first fin 21 is H1 and satisfies: 0.6mm ≤ H1 ≤ 0.9mm. It can be understood that the height H1 of the bridge plate 2112 along the thickness direction of the first fin 21 can be 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, or 0.8mm. A height H1 of not less than 0.6mm along the thickness direction of the first fin 21 ensures the size of the bridge plate 2112 and the heat exchange effect of the first fin 21; a height H1 of not more than 0.9mm along the thickness direction of the first fin 21 avoids the bridge plate 2112 becoming too large, thus preventing any impact on the strength of the first fin 21.

[0069] In some embodiments of this application, as shown in FIG4, a louver structure 2113 is provided between the first heat exchange tube 22 located at the lowest end of the second row of heat exchange tubes 222 on the first fin 21 and the reinforcing rib 2111. The opening of the louver structure 2113 faces the windward side of the rear heat exchanger 2, or the opening of the louver structure 2113 faces the leeward side of the rear heat exchanger 2. The louver structure 2113 has a better air disturbance effect and can better disturb the airflow when the airflow passes between the heat exchange tube located at the lowest end of the second row of heat exchange tubes 222 on the first fin 21 and the reinforcing rib 2111, changing the flow direction of the airflow, so that the airflow can fully exchange heat with the first heat exchange tube 22 on the rear heat exchanger 2, further improving the heat exchange effect of the rear heat exchanger 2.

[0070] The number of louver structures 2113 is 2-4. It can be understood that the number of louver structures 2113 can be 2, 3, or 4. The louver structures 2113 can be selectively installed according to heat exchange requirements and the area where they can be installed, to meet different usage needs.

[0071] In some embodiments of this application, as shown in FIG4, the length of the louver structure 2113 along the arrangement direction of the second row of heat exchange tubes 222 is L2 and satisfies: 1.2mm≤L2≤1.8mm. It can be understood that the length L2 of the louver structure 2113 along the arrangement direction of the second row of heat exchange tubes 222 can be 1.2mm, 1.25mm, 1.3mm, 1.35mm, 1.4mm, 1.45mm, 1.5mm, 1.55mm, 1.6mm, 1.65mm, 1.7mm, 1.75mm, or 1.8mm. Along the arrangement direction of the second row of heat exchange tubes 222, the length L2 of the louver structure 2113 is not less than 1.2mm, which can ensure the size of the louver structure 2113 and the heat exchange effect of the first fin 21; along the arrangement direction of the second row of heat exchange tubes 222, the length L2 of the louver structure 2113 is not greater than 1.8mm, which can avoid the size of the louver structure 2113 being too large and avoid affecting the strength of the first fin 21.

[0072] In some embodiments of this application, as shown in FIG4, the height of the louver structure 2113 along the thickness direction of the first fin 21 is H2 and satisfies: 0.6mm ≤ H2 ≤ 0.8mm. It can be understood that the height H2 of the louver structure 2113 along the thickness direction of the first fin 21 can be 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, or 0.8mm. The height H2 of the louver structure 2113 being not less than 0.6mm along the thickness direction of the first fin 21 ensures the size of the louver structure 2113 and the heat exchange effect of the first fin 21; the height H2 of the louver structure 2113 being not greater than 0.9mm along the thickness direction of the first fin 21 avoids the louver structure 2113 becoming too large, thus avoiding affecting the strength of the first fin 21.

[0073] In some embodiments of this application, as shown in FIG2, the width of the first fin 21 is M and satisfies: 25mm ≤ M ≤ 28mm. It can be understood that the width M of the first fin 21 can be 25mm, 25.5mm, 26mm, 26.5mm, 27mm, 27.5mm, or 28mm. A width M of not less than 25mm ensures the size of the first fin 21 and its heat exchange effect; a width M of not more than 28mm avoids the first fin 21 becoming too large and thus prevents it from interfering with other components within the air conditioner 100.

[0074] In some embodiments of this application, as shown in FIG2, the height of the rear heat exchanger 2 along the vertical direction (as shown in FIG1) is Z1 and satisfies: 95mm≤Z1≤105mm. It can be understood that the height Z1 of the rear heat exchanger 2 along the vertical direction can be 95mm, 95.5mm, 96mm, 96.5mm, 97mm, 97.5mm, 98mm, 98.5mm, 99mm, 99.5mm, 100mm, 100.5mm, 101mm, 101.5mm, 102mm, 102.5mm, 103mm, 103.5mm, 104mm, 104.5mm, or 105mm. Along the vertical direction, the height Z1 of the rear heat exchanger 2 is not less than 95mm, which can ensure the size of the rear heat exchanger 2 and the heat exchange effect of the rear heat exchanger 2; along the vertical direction, the height Z1 of the rear heat exchanger 2 is not greater than 105mm, which can prevent the size of the rear heat exchanger 2 from being too large and prevent the rear heat exchanger 2 from affecting other components inside the air conditioner 100.

[0075] In some embodiments of this application, as shown in FIG2, the height of the front heat exchanger 1 in the vertical direction is Z2 and satisfies: 170mm≤Z2≤180mm. It can be understood that the height Z2 of the front heat exchanger 1 in the vertical direction can be 170mm, 170.5mm, 171mm, 171.5mm, 172mm, 172.5mm, 173mm, 173.5mm, 174mm, 174.5mm, 175mm, 175.5mm, 176mm, 176.5mm, 177mm, 177.5mm, 178mm, 178.5mm, 179mm, 179.5mm or 180mm. Along the vertical direction, the height Z2 of the front heat exchanger 1 is not less than 170mm, which can ensure the size of the front heat exchanger 1 and the heat exchange effect of the front heat exchanger 1; along the vertical direction, the height Z2 of the front heat exchanger 1 is not greater than 180mm, which can prevent the size of the front heat exchanger 1 from being too large and prevent the front heat exchanger 1 from affecting other components inside the air conditioner 100.

[0076] In some embodiments of this application, as shown in FIG2, the diameter of the first heat exchange tube 22 is D1, and satisfies: 3.6mm ≤ D ≤ 7.5mm. It can be understood that the diameter D1 of the first heat exchange tube 22 can be 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, 5.5mm, 5.6mm, 5.7mm, 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 diameter D1 of the first heat exchange tube 22 is not less than 3.6mm, which can ensure the flow rate of refrigerant in the first heat exchange tube 22 and ensure the heat exchange effect of the subsequent heat exchanger 2; the diameter D1 of the first heat exchange tube 22 is not greater than 7.5mm, which can avoid the first heat exchange tube 22 being too large and avoid affecting the strength of the first fin 21.

[0077] In some embodiments of this application, the number of first heat exchange tubes 22 is 12-16. It is understood that the number of first heat exchange tubes 22 can be 12, 13, 14, 15, or 16. The first heat exchange tubes 22 can be selectively arranged according to the heat exchange requirements and the area where the first heat exchange tubes 22 can be installed, to meet different usage needs.

[0078] In some embodiments of this application, as shown in FIG1, the rear heat exchanger 2 has multiple rows of first heat exchange tubes 22 arranged sequentially from the windward side to the leeward side. The area between two adjacent first heat exchange tubes 22 in each row of first heat exchange tubes 22 on the first fin 21 is a first air passage area 212. The first air passage area 212 has a first bridge plate 2121 and / or a first louver. The two ends of the first bridge plate 2121 are connected to the first fin 21 along the arrangement direction of each row of first heat exchange tubes 22, and the middle part is spaced apart from the first fin 21.

[0079] The first bridge plate 2121 includes a first top plate and a corresponding first support member. A perforation is formed between the first top plate and the first fin 21, perpendicular to the first fin 21, and the first bridge plate 21 is also perforated on the first fin 21. By setting the first bridge plate 2121, the airflow can be disturbed when it passes through the first air passage area 212, changing the airflow direction and allowing for sufficient heat exchange with the first heat exchange tube 22, further improving the heat exchange effect of the first fin 21. The more first bridge plates 2121 there are, the better the heat exchange effect of the first fin 21. Simultaneously, the condensate generated during heat exchange is prone to dripping; by setting the first bridge plate 2121, the frosting problem of the air conditioner 100 can also be addressed, making the position of the first fin 21 easier to defrost.

[0080] The opening of the first louver faces the windward side of the rear heat exchanger 2, or the opening of the first louver faces the leeward side of the rear heat exchanger 2. The first louver has a better air disturbance effect, which can better disturb the airflow when the airflow passes between the first heat exchange tube 22 located at the bottom of the second row of first heat exchange tubes 22 and the reinforcing rib 2111 on the first fin 21, change the flow direction of the airflow, and enable the airflow to fully exchange heat with the first heat exchange tube 22 on the rear heat exchanger 2, thereby further improving the heat exchange effect of the rear heat exchanger 2.

[0081] In some embodiments of this application, as shown in Figures 1 and 2, the front heat exchanger 1 includes a plurality of second fins 11 spaced apart along the length of the front heat exchanger 1 and a second heat exchange tube 12 passing through the plurality of second fins 11. By setting a plurality of spaced second fins 11, the second heat exchange tube 12 can be fixed at multiple positions on the front heat exchanger 1, which can make the position of the second heat exchange tube 12 on the front heat exchanger 1 more reliable and make the installation of the second heat exchange tube 12 more reliable.

[0082] The number of second heat exchange tubes 12 is 22-28. It can be understood that the number of second heat exchange tubes 12 can be 22, 23, 24, 25, 26, 27, or 28. The number of second heat exchange tubes 12 can be selectively set according to the heat exchange requirements and the area where the second heat exchange tubes 12 can be installed, thus meeting different usage needs.

[0083] Further, as shown in Figures 1 and 2, the front heat exchanger 1 has multiple rows of second heat exchange tubes 12 arranged sequentially from the windward side to the leeward side. The area between two adjacent second heat exchange tubes 12 in each row of second heat exchange tubes 12 on the second fin 11 is a second air passage area 111. The second air passage area 111 has a second bridge plate 1111 and / or a second louver. The two ends of the second bridge plate 1111 are connected to the second fin 11 along the arrangement direction of each row of heat exchange tubes, and the middle part is spaced apart from the second fin 11.

[0084] The second bridge plate 1111 includes a second top plate and a corresponding second support member. A perforation is formed between the second top plate and the second fin 11, perpendicular to the second fin 11, and the second bridge plate 111 is also perforated on the second fin 11. By setting the second bridge plate 1111, the airflow can be disturbed when it passes through the second air passage area 111, changing the airflow direction and allowing for sufficient heat exchange between the airflow and the second heat exchange tube 12, further improving the heat exchange effect of the second fin 11. The more second bridge plates 1111 there are, the better the heat exchange effect of the second fin 11. Simultaneously, condensation generated during heat exchange is prone to dripping; by setting the second bridge plate 1111, the frosting problem of the air conditioner 100 can also be addressed, making the position of the second fin 11 easier to defrost.

[0085] The second louver opens towards the windward side of the front heat exchanger 1, or towards the leeward side of the front heat exchanger 1. The second louver has a better air turbulence effect, which can better disturb the airflow when the airflow passes between the second heat exchange tube 12 located at the bottom of the second row of second heat exchange tubes 12 on the second fin 11 and the reinforcing rib 2111, change the airflow direction, and enable the airflow to fully exchange heat with the second heat exchange tubes 12 on the front heat exchanger 1, thereby further improving the heat exchange effect of the front heat exchanger 1.

[0086] Furthermore, as shown in Figure 1, the tube spacing P1 between two adjacent second heat exchange tubes 12 in each row of the front heat exchanger 1 is the same, which makes the layout of the second heat exchange tubes 12 on the front heat exchanger 1 more uniform, resulting in a better heat exchange effect of the front heat exchanger 1 and easier assembly.

[0087] Furthermore, as shown in Figure 2, the tube spacing between two adjacent second heat exchange tubes 12 in each row of the front heat exchanger 1 is P1 or P2. The second heat exchange tubes 12 can be set according to the heat exchange requirements of different positions of the front heat exchanger 1 to improve the heat exchange efficiency of the front heat exchanger 1.

[0088] Furthermore, as shown in Figure 1, the tube spacing P3 between two adjacent second heat exchange tubes 12 in each row of first heat exchange tubes 22 on the rear heat exchanger 2 is the same, which makes the layout of the first heat exchange tubes 22 on the rear heat exchanger 2 more uniform, resulting in better heat exchange effect of the rear heat exchanger 2 and easier assembly.

[0089] In some embodiments of this application, louvers are provided at the upper ends of the front heat exchanger 1 and the rear heat exchanger 2. Driven by the impeller 20, the airflow outside the air conditioner 100 enters the housing 30 of the air conditioner 100 through the air inlet 301 located above the heat exchanger assembly 10. The external airflow can flow directly to the upper ends of the front heat exchanger 1 and the rear heat exchanger 2. By providing louvers at the upper ends of the front heat exchanger 1 and the rear heat exchanger 2, the louvers can effectively block the airflow from flowing directly to the upper end of the connection area between the front heat exchanger 1 and the rear heat exchanger 2. This can prevent the airflow from bypassing the first heat exchange tube 22 or the second heat exchange tube 12 at the upper end of the front heat exchanger 1 and the rear heat exchanger 2 and directly flowing out from the air outlet 302 of the air conditioner 100 driven by the impeller 20. This can change the flow direction of the airflow, so that the airflow can fully exchange heat with the first heat exchange tube 22 and the second heat exchange tube 12 on the front heat exchanger 1 and the rear heat exchanger 2, further improving the heat exchange effect of the heat exchanger assembly 10.

[0090] The following description, with reference to the accompanying drawings, describes four specific embodiments of a heat exchanger assembly 10 according to this application. It is to be understood that the following description is merely exemplary and intended to explain this application, and should not be construed as limiting the scope of this application.

[0091] Example 1

[0092] Specifically, the heat exchanger assembly 10 includes a front heat exchanger 1 and a rear heat exchanger 2.

[0093] A heat exchanger can be used in an air conditioner 100, which includes a fan impeller 20. For example, in an indoor unit, the heat exchanger uses a circulating refrigerant (such as Freon) to absorb heat from the indoor air and transfer it to the outdoor air, or vice versa, thereby regulating the indoor temperature. It is a key device for heat transfer in the air conditioner 100. In cooling mode, the heat exchanger causes the refrigerant to evaporate at low pressure, absorbing heat from the indoor air and lowering the indoor temperature. In heating mode, the condenser condenses the refrigerant at high temperature and high pressure, releasing heat and transferring it to the indoor air, thus raising the indoor temperature.

[0094] The rear heat exchanger 2 is located behind the front heat exchanger 1 and its upper end is connected to the upper end of the front heat exchanger 1. The rear heat exchanger 2 includes a plurality of first fins 21 spaced apart along the length of the rear heat exchanger 2 and a first heat exchange tube 22 passing through the plurality of first fins 21. By setting a plurality of spaced first fins 21, the first heat exchange tube 22 can be fixed at multiple positions on the rear heat exchanger 2, which makes the position of the first heat exchange tube 22 on the rear heat exchanger 2 more reliable and makes the installation of the first heat exchange tube 22 more reliable.

[0095] The heat exchange medium flowing in the first heat exchange tube 22 can transfer heat to the first fin 21, which can increase the heat exchange area of ​​the subsequent heat exchanger 2. The lower end of the first fin 21 has an overlapping area 211, and the overlapping area 211 is provided with reinforcing ribs 2111, which can strengthen the edge of the first fin 21; at the same time, the condensed water generated during the heat exchange process can drip down along the overlapping area 211, which can also solve the problem of frost formation in the air conditioner 100, making the overlapping area 211 of the first fin 21 easier to defrost.

[0096] The reinforcing ribs 2111 are five spaced apart. The five reinforcing ribs 2111 are spaced apart along the width direction of the first fin 21. Along the thickness direction of the first fin 21, the reinforcing ribs 2111 protrude from the first fin 21. Among the multiple reinforcing ribs 2111, at least two reinforcing ribs 2111 protrude towards both sides of the thickness direction of the first fin 21, which can reduce the risk of deformation of the first fin 21 and increase the flatness of the first fin 21.

[0097] The multiple reinforcing ribs 2111 have the same height. During processing, the reinforcing ribs 2111 can be uniformly produced through stamping and other steps, simplifying their manufacturing and reducing the manufacturing cost of the first fin 21. Along the width direction of the first fin 21, the distance between any two adjacent reinforcing ribs 2111 is the same. Again, the reinforcing ribs 2111 have the same width, allowing for uniform processing through stamping and other steps, simplifying their manufacturing and reducing the manufacturing cost of the first fin 21.

[0098] The first heat exchange tube 22 consists of a first row of heat exchange tubes 221 and a second row of heat exchange tubes 222 arranged sequentially from the windward side to the leeward side. Along the length of the first fin 21, the reinforcing rib 2111 is arranged opposite to the second row of heat exchange tubes 222 on the leeward side. The reinforcing rib 2111 can be located on the leeward side to enhance the heat exchange effect on the leeward side.

[0099] A bridge plate 2112 is provided on the first fin 21 between the heat exchange tube at the lowest end of the second row of heat exchange tubes 222 and the reinforcing rib 2111. The two ends of the bridge plate 2112 are connected to the first fin 21 along the arrangement direction of the second row of heat exchange tubes 222, and the middle part is spaced apart from the first fin 21. The bridge plate 2112 includes a top plate 21121 and a corresponding support member 21122. The position between the top plate 21121 and the first fin 21 is hollowed out perpendicular to the first fin 21, and the position on the first fin 21 where the bridge plate 2112 is set is also hollowed out. By setting the bridge plate 2112, the airflow can be disturbed when the airflow passes between the heat exchange tube at the lowest end of the second row of heat exchange tubes 222 and the reinforcing rib 2111, changing the flow direction of the airflow, so that the airflow can fully exchange heat with the first heat exchange tube 22, further improving the heat exchange effect of the first fin 21. The more bridge plates 2112 there are, the better the heat exchange effect of the first fin 21. Meanwhile, the condensation generated during the heat exchange process is prone to dripping. By setting bridge plates 2112, the frosting problem of the air conditioner 100 can be addressed, making the first fin 21 easier to defrost. There are 4 bridge plates 2112.

[0100] The rear heat exchanger 2 has multiple rows of first heat exchange tubes 22 arranged sequentially from the windward side to the leeward side. The area between two adjacent first heat exchange tubes 22 in each row of first heat exchange tubes 22 on the first fin 21 is a first air passage area 212. The first air passage area 212 has a first bridge plate 2121. The two ends of the first bridge plate 2121 are connected to the first fin 21 along the arrangement direction of each row of first heat exchange tubes 22, and the middle part is spaced apart from the first fin 21.

[0101] The first bridge plate 2121 includes a first top plate and a corresponding first support member. A perforation is formed between the first top plate and the first fin 21, perpendicular to the first fin 21, and the first bridge plate 21 is also perforated on the first fin 21. By setting the first bridge plate 2121, the airflow can be disturbed when it passes through the first air passage area 212, changing the airflow direction and allowing for sufficient heat exchange with the first heat exchange tube 22, further improving the heat exchange effect of the first fin 21. The more first bridge plates 2121 there are, the better the heat exchange effect of the first fin 21. Simultaneously, the condensate generated during heat exchange is prone to dripping; by setting the first bridge plate 2121, the frosting problem of the air conditioner 100 can also be addressed, making the position of the first fin 21 easier to defrost.

[0102] The front heat exchanger 1 includes a plurality of second fins 11 spaced apart along the length of the front heat exchanger 1 and a second heat exchange tube 12 passing through the plurality of second fins 11. By setting a plurality of spaced second fins 11, the second heat exchange tube 12 can be fixed at multiple positions on the front heat exchanger 1, which can make the position of the second heat exchange tube 12 on the front heat exchanger 1 more reliable and make the installation of the second heat exchange tube 12 more reliable.

[0103] The front heat exchanger 1 has multiple rows of second heat exchange tubes 12 arranged sequentially from the windward side to the leeward side. The area between two adjacent second heat exchange tubes 12 in each row of second heat exchange tubes 12 on the second fin 11 is a second air passage area 111. The second air passage area 111 has a second bridge plate 1111. The two ends of the second bridge plate 1111 are connected to the second fin 11 along the arrangement direction of each row of heat exchange tubes, and the middle part is spaced apart from the second fin 11.

[0104] The second bridge plate 1111 includes a second top plate and a corresponding second support member. A perforation is formed between the second top plate and the second fin 11, perpendicular to the second fin 11, and the second bridge plate 111 is also perforated on the second fin 11. By setting the second bridge plate 1111, the airflow can be disturbed when it passes through the second air passage area 111, changing the airflow direction and allowing for sufficient heat exchange between the airflow and the second heat exchange tube 12, further improving the heat exchange effect of the second fin 11. The more second bridge plates 1111 there are, the better the heat exchange effect of the second fin 11. Simultaneously, condensation generated during heat exchange is prone to dripping; by setting the second bridge plate 1111, the frosting problem of the air conditioner 100 can also be addressed, making the position of the second fin 11 easier to defrost.

[0105] In the front heat exchanger 1, the tube spacing P1 between adjacent second heat exchange tubes 12 in each row is the same, resulting in a more uniform layout of the second heat exchange tubes 12 on the front heat exchanger 1. This leads to better heat exchange performance in the front heat exchanger 1 and easier assembly. Similarly, in the rear heat exchanger 2, the tube spacing P3 between adjacent second heat exchange tubes 12 in each row of first heat exchange tubes 22 is the same, resulting in a more uniform layout of the first heat exchange tubes 22 on the rear heat exchanger 2. This also leads to better heat exchange performance in the rear heat exchanger 2 and easier assembly.

[0106] Louvers are provided at the upper ends of the front heat exchanger 1 and the rear heat exchanger 2. Driven by the impeller 20, the airflow outside the air conditioner 100 enters the housing 30 of the air conditioner 100 through the air inlet 301 located above the heat exchanger assembly 10. The external airflow can flow directly to the upper ends of the front heat exchanger 1 and the rear heat exchanger 2. By providing louvers at the upper ends of the front heat exchanger 1 and the rear heat exchanger 2, the louvers can effectively block the airflow from flowing directly to the upper end of the connection area between the front heat exchanger 1 and the rear heat exchanger 2. This can prevent the airflow from bypassing the first heat exchange tube 22 or the second heat exchange tube 12 at the upper end of the front heat exchanger 1 and the rear heat exchanger 2 and directly flowing out from the air outlet 302 of the air conditioner 100 driven by the impeller 20. This can change the flow direction of the airflow, so that the airflow can fully exchange heat with the first heat exchange tube 22 and the second heat exchange tube 12 on the front heat exchanger 1 and the rear heat exchanger 2, and further improve the heat exchange effect of the heat exchanger assembly 10.

[0107] Example 2

[0108] This embodiment has a structure that is largely the same as that of Embodiment 1. The same components are referred to by the same reference numerals. The only difference is that the tube spacing between two adjacent second heat exchange tubes 12 in each row of second heat exchange tubes 12 on the front heat exchanger 1 is P1 or P2. The second heat exchange tubes 12 can be set according to the heat exchange requirements of different positions of the front heat exchanger 1 to improve the heat exchange efficiency of the front heat exchanger 1.

[0109] Example 3

[0110] This embodiment is structurally similar to Embodiment 1, with identical components using the same reference numerals. The only difference is that a louver structure 2113 is provided on the first fin 21 between the lowest heat exchange tube of the second row of heat exchange tubes 222 and the reinforcing rib 2111. The opening of the louver structure 2113 faces either the windward side or the leeward side of the rear heat exchanger 2. The louver structure 2113 provides better airflow disturbance, effectively agitating the airflow as it passes between the lowest heat exchange tube of the second row of heat exchange tubes 222 and the reinforcing rib 2111 on the first fin 21. This alters the airflow direction, allowing for sufficient heat exchange between the airflow and the first heat exchange tube 22 on the rear heat exchanger 2, further enhancing the heat exchange efficiency of the rear heat exchanger 2. There are three louver structures 2113.

[0111] Example 4

[0112] This embodiment has a structure that is roughly the same as that of Embodiment 1. The same components are referred to by the same reference numerals. The only difference is that along the thickness direction of the first fin 21, multiple reinforcing ribs 2111 protrude toward the same side, and the manufacturing of the reinforcing ribs 2111 is relatively convenient.

[0113] An air conditioner 100 according to an embodiment of this application includes a housing 30, a fan 20, and the heat exchanger assembly 10 described above.

[0114] Specifically, the impeller 20 is located inside the housing 30, the heat exchanger assembly 10 is located inside the housing 30, the rear heat exchanger 2 is located on the rear upper side of the impeller 20, the front heat exchanger 1 is located on the front upper side and front side of the impeller 20, and the heat exchanger assembly 10 partially surrounds the impeller 20, so the heat exchange effect of the heat exchanger assembly 10 is better.

[0115] According to the embodiment of the present application, the air conditioner 100, by passing a first heat exchange tube 22 through a plurality of first fins 21 spaced apart along the length of the rear heat exchanger 2, allows the heat exchange medium flowing in the first heat exchange tube 22 to transfer heat to the first fins 21, thereby increasing the heat exchange area of ​​the rear heat exchanger 2. Furthermore, the lower end of the first fin 21 has an overlapping area 211, which is provided with reinforcing ribs 2111, strengthening the edge of the first fin 21 and preventing deformation of the overlapping area 211. Simultaneously, condensate generated during heat exchange can drip down along the overlapping area 211, addressing the frost problem of the air conditioner 100 and making the overlapping area 211 of the first fins 21 easier to defrost.

[0116] In some embodiments of this application, the vertical dimension of the air conditioner 100 is H3 and satisfies: 280mm ≤ H3 ≤ 300mm. It is understood that the vertical dimension H3 of the air conditioner 100 can be 280mm, 282mm, 284mm, 286mm, 288mm, 290mm, 292mm, 294mm, 296mm, 298mm, or 300mm. If the vertical dimension H3 of the air conditioner 100 is not less than 280mm, there is sufficient space inside the air conditioner 100 to install the impeller 20 and the heat exchanger assembly 10; if the vertical dimension H3 of the air conditioner 100 is not greater than 300mm, the height of the air conditioner 100 is reasonable, and it occupies less space during transportation, thus improving the transportation efficiency of the air conditioner 100.

[0117] In some embodiments of this application, the front-to-back dimension of the air conditioner 100 is L3 and satisfies: 190mm ≤ L3 ≤ 230mm. It is understood that the front-to-back dimension L3 of the air conditioner 100 can be 190mm, 195mm, 200mm, 205mm, 210mm, 215mm, 220mm, 225mm, or 230mm. If the front-to-back dimension L3 of the air conditioner 100 is not less than 190mm, there is sufficient space inside the air conditioner 100 to install the impeller 20 and the heat exchanger assembly 10; if the front-to-back dimension L3 of the air conditioner 100 is not greater than 230mm, the thickness of the air conditioner 100 is reasonable, and it occupies less space during transportation, thus improving the transportation efficiency of the air conditioner 100.

[0118] In some embodiments of this application, as shown in FIG2, the housing 30 includes a support base 303, and the overlapping area 211 is supported on the support base 303. A reinforcing rib 2111 is disposed at a position corresponding to the overlapping area 211 and the support base 303; for example, the direction of the supporting force exerted on the overlapping area 211 by the support base 303 passes through the reinforcing rib 2111, or the support base 303 includes a contact surface that abuts against the overlapping area 211, and the reinforcing rib 2111 passes through the contact surface in a direction perpendicular to it. The placement of the reinforcing rib 2111 at the position corresponding to the overlapping area 211 and the support base 303 can reduce deformation of the overlapping area 211.

[0119] Other configurations and operations of the heat exchanger assembly 10 and the air conditioner 100 having the heat exchanger assembly 10 according to embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0120] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0121] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat exchanger assembly, wherein, include: Front heat exchanger; The rear heat exchanger is located behind the front heat exchanger and its upper end is connected to the upper end of the front heat exchanger. The rear heat exchanger includes a plurality of first fins spaced apart along the length of the rear heat exchanger and a first heat exchange tube passing through the plurality of first fins. The lower end of the first fins has an overlapping area, and the overlapping area is provided with reinforcing ribs.

2. The heat exchanger assembly of claim 1, wherein, The reinforcing ribs are a plurality of spaced-apart ribs, which are spaced apart along the width direction of the first fin and protrude from the first fin along the thickness direction of the first fin.

3. The heat exchanger assembly of claim 2, wherein, Along the thickness direction of the first fin, a plurality of the reinforcing ribs protrude toward the same side; Alternatively, at least two of the reinforcing ribs protrude toward both sides of the thickness direction of the first fin.

4. The heat exchanger assembly of claim 2, wherein, The number of reinforcing ribs is 3-8.

5. The heat exchanger assembly of claim 2, wherein, The heights of the multiple reinforcing ribs may be the same or different; And / or, along the width direction of the first fin, the distance between any two adjacent reinforcing ribs among the plurality of reinforcing ribs may be the same or different; And / or, along the width direction of the first fin, the widths of the plurality of reinforcing ribs may be the same or different.

6. The heat exchanger assembly of claim 1 or 2, wherein, The first heat exchange tube is one column or multiple columns spaced apart along the width direction of the first fin. Each column includes multiple first heat exchange tubes spaced apart along the length direction of the first fin. The reinforcing rib extends along a first direction. The angle between the first direction and the arrangement direction of each column of first heat exchange tubes is A and satisfies: -5°≤A≤10°.

7. The heat exchanger assembly of any one of claims 1-6, wherein, The first heat exchange tube is a plurality of rows spaced apart along the width direction of the first fin. The plurality of rows of the first heat exchange tube includes a first row of heat exchange tubes and a second row of heat exchange tubes arranged sequentially from the windward side to the leeward side. Along the length direction of the first fin, the reinforcing rib is arranged opposite to the second row of heat exchange tubes on the leeward side.

8. The heat exchanger assembly according to claim 7, wherein, A bridge plate is provided between the first heat exchange tube at the bottom of the second row of heat exchange tubes and the reinforcing rib on the first fin. The two ends of the bridge plate are connected to the first fin along the arrangement direction of the second row of heat exchange tubes, and the middle part is spaced apart from the first fin. The number of bridge plates is 2-4.

9. The heat exchanger assembly according to claim 8, wherein, Along the arrangement direction of the second column of heat exchange tubes, the length of the bridge plate is L1 and satisfies: 0.8mm≤L1≤1.4mm; And / or, along the thickness direction of the first fin, the height of the bridge fin is H1 and satisfies: 0.6mm≤H1≤0.9mm.

10. The heat exchanger assembly of claim 7, wherein, A louver structure is provided between the first heat exchange tube located at the bottom of the second row of heat exchange tubes on the first fin and the reinforcing rib, and the number of the louver structures is 2-4.

11. The heat exchanger assembly of claim 10, wherein, Along the arrangement direction of the second column of heat exchange tubes, the length of the louver structure is L2 and satisfies: 1.2mm≤L2≤1.8mm; And / or, along the thickness direction of the first fin, the height of the louver structure is H2 and satisfies: 0.6mm≤H2≤0.8mm.

12. The heat exchanger assembly according to any one of claims 1-11, wherein, The width of the first fin is M and satisfies: 25mm≤M≤28mm.

13. The heat exchanger assembly according to any one of claims 1-12, wherein, Along the up and down direction, The height of the rear heat exchanger is Z1 and satisfies: 95mm≤Z1≤105mm; And / or, the height of the front heat exchanger is Z2 and satisfies: 170mm≤Z2≤180mm.

14. The heat exchanger assembly according to any one of claims 1-13, wherein, The diameter of the first heat exchange tube is D1, and it satisfies the condition: 3.6mm≤D≤7.5mm.

15. The heat exchanger assembly according to any one of claims 1-14, wherein, The number of the first heat exchange tubes is 12-16.

16. The heat exchanger assembly according to any one of claims 1-15, wherein, The rear heat exchanger has multiple rows of first heat exchange tubes arranged sequentially from the windward side to the leeward side. The area between two adjacent first heat exchange tubes in each row of the first heat exchange tubes on the first fin is a first air passage area. The first air passage area has a first bridge plate and / or a first louver. The first bridge plate is connected to the first fin at both ends along the arrangement direction of each row of the first heat exchange tubes, and the middle part is spaced apart from the first fin.

17. The heat exchanger assembly according to any one of claims 1-16, wherein, The front heat exchanger includes a plurality of second fins spaced apart along the length of the front heat exchanger and second heat exchange tubes passing through the plurality of second fins, wherein the number of second heat exchange tubes is 22-28.

18. The heat exchanger assembly of claim 17, wherein, The front heat exchanger has multiple rows of second heat exchange tubes arranged sequentially from the windward side to the leeward side. The area between two adjacent second heat exchange tubes in each row of the second fins is a second air passage area. The second air passage area has a second bridge plate and / or a second louver. The two ends of the second bridge plate are connected to the second fins along the arrangement direction of each row of heat exchange tubes, and the middle part is spaced apart from the second fins.

19. The heat exchanger assembly of claim 17, wherein, The tube spacing P1 between two adjacent second heat exchange tubes in each row of the second heat exchange tubes on the front heat exchanger is the same. And / or, the tube spacing between two adjacent second heat exchange tubes in each row of the second heat exchange tubes on the front heat exchanger is P1 or P2; And / or, the tube spacing P3 between two adjacent second heat exchange tubes in each row of the first heat exchange tubes on the rear heat exchanger is the same.

20. The heat exchanger assembly according to any one of claims 1-19, wherein, Louvers are provided at the upper ends of the front heat exchanger and the rear heat exchanger.

21. The heat exchanger assembly according to any one of claims 1-20, wherein, The distance between the lower end of the overlapping area and the adjacent first heat exchange tube is greater than the distance between two adjacent first heat exchange tubes.

22. An air conditioner, characterized in that, include: case; A wind turbine, wherein the wind turbine is disposed within the housing; The heat exchanger assembly according to any one of claims 1-21 is disposed within the housing, the rear heat exchanger is located on the rear upper side of the impeller, and the front heat exchanger is located on the front upper side and front side of the impeller.

23. The air conditioner according to claim 22, wherein, The vertical dimension of the air conditioner is H3 and satisfies: 280mm≤H3≤300mm; And / or, the dimension of the air conditioner along the front-to-back direction is L3 and satisfies: 190mm≤L3≤230mm.

24. The air conditioner according to claim 22 or 23, wherein, The housing includes a support base, and the overlapping area is supported on the support base.

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