Heat exchanger for air conditioner and air conditioner

Abstract

The utility model relates to the technical field of household appliances. The utility model discloses a heat exchanger for an air conditioner. The heat exchanger comprises a middle straight plate section, an upper straight plate section and a lower straight plate section. The middle straight plate section is arranged on the air conditioner in the vertical direction, the middle straight plate section comprises a plurality of middle heat exchange units, and a plurality of middle heat exchange pipes are each provided with a middle reinforced heat transfer structure; the upper straight plate section is connected to the upper portion of the middle straight plate section in a bent mode, the upper straight plate section comprises a plurality of upper heat exchange units, and the multiple upper heat exchange units are each provided with an upper enhanced heat transfer structure; the lower straight plate section is connected to the lower portion of the middle straight plate section in a bent mode and comprises a plurality of lower heat exchange units, and each lower heat exchange unit is provided with a lower reinforced heat transfer structure. Through the arrangement, the heat exchanger can adapt to the wind speeds of different positions of the windward side, the risk of unsmooth drainage of the surface of the heat exchanger can be avoided, and the user experience is better. Meanwhile, the utility model further discloses the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, for example to a heat exchanger for an air conditioner and an air conditioner. BACKGROUND

[0002] With the development of society, the popularity of air conditioners is also increasing. In the air conditioner, a finned tube heat exchanger is arranged to exchange heat with the air flowing therethrough to achieve cooling or heating of the indoor. The conventional heat exchanger is mostly a split heat exchanger or a straight plate heat exchanger, so if the wind speed on the windward surface of the heat exchanger is not uniform, the heat exchange efficiency will be reduced.

[0003] In the related art, in order to improve the heat exchange efficiency of the heat exchanger, the user generally sets the heat exchanger to a circular arc structure to adapt to the wind speed at different positions of the windward surface of the heat exchanger.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related art, the existing heat exchanger with a circular arc structure has an upper side of the windward side as an inclined surface, and the length of the inclined surface is relatively long, which may cause the risk of poor drainage of the surface of the heat exchanger, and the user experience is not good.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. INNOVATION CONTENT

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a heat exchanger for an air conditioner and an air conditioner. The heat exchanger of the air conditioner not only can adapt to the wind speed at different positions of the windward surface, but also can avoid the risk of poor drainage of the surface of the heat exchanger, and the user experience is better.

[0009] The heat exchanger for an air conditioner provided by the embodiments of the present disclosure comprises a middle straight plate section, an upper straight plate section and a lower straight plate section. The middle straight plate section is arranged in a vertical direction of the air conditioner. The middle straight plate section comprises a plurality of middle heat exchange units, and each of the plurality of middle heat exchange units is provided with a middle heat transfer strengthening structure. The upper straight plate section is bent and connected above the middle straight plate section. The upper straight plate section comprises a plurality of upper heat exchange units, and each of the plurality of upper heat exchange units is provided with an upper heat transfer strengthening structure. The lower straight plate section is bent and connected below the middle straight plate section. The lower straight plate section comprises a plurality of lower heat exchange units, and each of the plurality of lower heat exchange units is provided with a lower heat transfer strengthening structure. The lower straight plate section and the upper straight plate section are arranged on the same side of the middle straight plate section in an inclined manner.

[0010] In some embodiments, the area of the middle heat exchange unit is a first heat exchange area A1, and the area of the middle heat transfer strengthening structure is a first heat transfer area S1. A first quotient K1 = the first heat transfer area S1 / the first heat exchange area A1. The first quotient K1 is greater than or equal to 0.2 and less than or equal to 0.6.

[0011] In some embodiments, the area of the upper heat exchange unit is a second heat exchange area A2, and the area of the upper heat transfer strengthening structure is a second heat transfer area S2. A second quotient K2 = the second heat transfer area S2 / the second heat exchange area A2. The second quotient K2 is greater than or equal to 0.4 and less than or equal to 0.8.

[0012] In some embodiments, the value of the first quotient K1 divided by the second quotient K2 is greater than or equal to 0.5 and less than or equal to 0.95.

[0013] In some embodiments, the area of the lower heat exchange unit is a third heat exchange area A3, and the area of the lower heat transfer strengthening structure is a third heat transfer area S3. A third quotient K3 = the third heat transfer area S3 / the third heat exchange area A3. The third quotient K3 is greater than or equal to 0.4 and less than or equal to 0.8.

[0014] In some embodiments, the value of the first quotient K1 divided by the third quotient K3 is greater than or equal to 0.5 and less than or equal to 0.95.

[0015] In some embodiments, the middle heat transfer strengthening structure is configured as a bridge opening structure, a louver structure or a convex structure. The upper heat transfer strengthening structure is configured as a bridge opening structure, a louver structure or a convex structure. The lower heat transfer strengthening structure is configured as a bridge opening structure, a louver structure or a convex structure.

[0016] The embodiments of the present disclosure also provide an air conditioner, which comprises a shell and the heat exchanger for an air conditioner described above. The shell is provided with a mounting cavity. The heat exchanger for an air conditioner is mounted in the mounting cavity.

[0017] In some embodiments, the air conditioner further comprises a fan. The fan is arranged in the mounting cavity and located at one side of the heat exchanger; wherein the upper straight plate section and the lower straight plate section of the heat exchanger are arranged obliquely towards the fan.

[0018] In some embodiments, the side wall surface of the heat exchanger near the side of the fan is configured as a windward side wall surface, and the side wall surface of the heat exchanger away from the side of the fan is configured as a leeward side wall surface; in the case that the size and shape of the windward side wall surface correspond to the size and shape of the leeward side wall surface, the air conditioner comprises a plurality of heat exchangers; wherein the windward side wall surface and the leeward side wall surface of adjacent heat exchangers are arranged in abutment with each other.

[0019] The heat exchanger for an air conditioner and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The heat exchanger for an air conditioner provided by the embodiments of the present disclosure comprises a middle straight plate section, an upper straight plate section and a lower straight plate section. The middle straight plate section is arranged in the air conditioner along the vertical direction, the middle straight plate section comprises a plurality of middle heat exchange units, and each of the plurality of middle heat exchange units is provided with a middle heat transfer strengthening structure; the upper straight plate section is bent and connected above the middle straight plate section, the upper straight plate section comprises a plurality of upper heat exchange units, and each of the plurality of upper heat exchange units is provided with an upper heat transfer strengthening structure; the lower straight plate section is bent and connected below the middle straight plate section, the lower straight plate section comprises a plurality of lower heat exchange units, and each of the plurality of lower heat exchange units is provided with a lower heat transfer strengthening structure; wherein the lower straight plate section and the upper straight plate section are arranged obliquely towards the same side of the middle straight plate section. In this way, when the fan blows air, the upper straight plate section, the middle straight plate section and the lower straight plate section can respectively adapt to the wind speed of their windward sides, and the middle straight plate section, the upper straight plate section and the lower straight plate section are respectively arranged in the middle heat transfer strengthening structure, the upper heat transfer strengthening structure and the lower heat transfer strengthening structure to ensure the heat exchange efficiency of the heat exchanger. At the same time, since the side wall surface of the middle straight plate section is a vertical plane, the area of the oblique plane of the heat exchanger as a whole can be reduced. In this way, the heat exchanger can not only adapt to the wind speed at different positions of its windward surface, but also can avoid the risk of poor drainage of the surface of the heat exchanger, and the user experience is better.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute a limitation on the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute a proportional limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of an air conditioner provided by the embodiments of the present disclosure;

[0024] Figure 2 This is a schematic diagram of the structure of a heat exchanger provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of another heat exchanger provided in an embodiment of this disclosure;

[0026] Figure 4 This is a partial structural schematic diagram of a heat exchanger provided in an embodiment of this disclosure;

[0027] Figure 5 This is a partial structural schematic diagram of another heat exchanger provided in an embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of another heat exchanger provided in an embodiment of this disclosure;

[0029] Figure 7 This is a schematic diagram of the structure of a housing provided in an embodiment of this disclosure;

[0030] Figure 8 This is a partial structural schematic diagram of a housing provided in an embodiment of this disclosure.

[0031] Figure label:

[0032] 10: Housing; 11: Mounting cavity; 12: Air inlet; 13: Air outlet; 14: Fan; 15: Fixing structure;

[0033] 20: Heat exchanger; 201: Windward side wall; 202: Leeward side wall; 21: Middle straight plate section; 22: Upper straight plate section; 23: Lower straight plate section; 24: Heat exchange unit; 25: Enhanced heat transfer structure; 26: Tube hole. Detailed Implementation

[0034] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0035] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0036] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0038] Unless otherwise stated, the term "multiple" means two or more.

[0039] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0040] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0042] like Figures 1 to 8 As shown in the present disclosure, an air conditioner is provided. The heat exchanger 20 of the air conditioner can not only adapt to the wind speed at different positions on its windward side, but also avoid the risk of poor drainage on the surface of the heat exchanger 20, resulting in a better user experience.

[0043] like Figures 1 to 8As shown, a heat exchanger 20 for an air conditioner includes: a middle straight plate section 21, an upper straight plate section 22, and a lower straight plate section 23. The middle straight plate section 21 is vertically disposed in the air conditioner and includes multiple middle heat exchange units 24, each of which is provided with a middle enhanced heat transfer structure 25. The upper straight plate section 22 is bent and connected above the middle straight plate section 21 and includes multiple upper heat exchange units 24, each of which is provided with an upper enhanced heat transfer structure 25. The lower straight plate section 23 is bent and connected below the middle straight plate section 21 and includes multiple lower heat exchange units 24, each of which is provided with a lower enhanced heat transfer structure 25. The lower straight plate section 23 and the upper straight plate section 22 are inclined toward the same side of the middle straight plate section 21.

[0044] Specifically, the air conditioner includes a casing. An air inlet 12 and an air outlet 13 are provided on the side wall of the casing 10. An air duct is provided within the mounting cavity 11 of the casing 10, communicating with both the air inlet 12 and the air outlet 13, and the airflow direction of the duct is limited to from the air inlet 12 to the air outlet 13. The heat exchanger 20 is configured as an integral plate structure, and the entire heat exchanger 20 is arranged vertically. The heat exchanger 20 includes an upper straight plate section 22, a middle straight plate section 21, and a lower straight plate section 23, with the middle straight plate section 21 being vertically arranged. The upper straight plate section 22 is located above the middle straight plate section 21, and its upper end is inclined towards the air inlet 12. The lower straight plate section 23 is located below the middle straight plate section 21, and its lower end is inclined towards the air inlet 12. This allows the heat exchanger 20 to form an overall bow-shaped structure. It is understandable that the air velocity varies at different locations within the air duct when it is blown to the heat exchanger 20. Therefore, designing the heat exchanger 20 as a bow-shaped structure is more conducive to adapting the heat exchanger 20 to the air velocity at different locations on its windward side, thereby improving the heat exchange efficiency of the heat exchanger 20. Simultaneously, to increase the heat exchange area of ​​the heat exchanger 20, the existing straight-plate heat exchanger 20 needs to be tilted, which results in the heat exchanger 20 occupying more space in the horizontal direction. Therefore, designing the heat exchanger 20 as a bow-shaped structure can increase the heat exchange area while reducing the space occupied by the heat exchanger 20 in the horizontal direction.

[0045] In the above embodiment, since the sidewall of the middle straight plate section 21 is a vertical plane, the area of ​​the inclined plane of the heat exchanger 20 as a whole can be reduced, thereby avoiding the risk of poor drainage on the surface of the heat exchanger 20. Meanwhile, the included angle α between the upper straight plate section 22 and the middle straight plate section 21 can be set according to the size of the casing 10. For example, the included angle α between the upper straight plate section 22 and the middle straight plate section 21 can be 100°, 110°, 120°, 130°, or 140°. It is understood that the heat exchanger 20 will produce condensate during air conditioning operation. Therefore, making the included angle α greater than or equal to 100° can increase the slope of the upper straight plate section 22, further avoiding the risk of poor drainage on the surface of the heat exchanger 20. Similarly, the included angle β between the lower straight plate section 23 and the middle straight plate section 21 can be set according to the size of the housing 10. For example, the included angle β between the lower straight plate section 23 and the middle straight plate section 21 can be 100°, 110°, 120°, 130° or 140°.

[0046] like Figure 3 As shown, the middle heat exchange unit 24 includes two pipe holes 26, and a middle enhanced heat transfer structure 25 is provided between the two pipe holes 26 to further increase heat exchange efficiency. Similarly, the upper heat exchange unit 24 and the lower heat exchange unit 24 are also provided with two pipe holes 26, and an upper enhanced heat transfer structure 25 and a lower enhanced heat transfer structure 25 are provided between the two pipe holes 26. The number of middle enhanced heat transfer structures 25 in the middle heat exchange unit 24 is less than the number of upper enhanced heat transfer structures 25 in the upper heat exchange unit 24, and less than the number of lower enhanced heat transfer structures 25 in the lower heat exchange unit 24, to reduce the wind resistance of the middle straight plate section 21.

[0047] In the above embodiments, two adjacent heat exchange units 24 can share a single pipe hole 26, or they can each have a separate pipe hole 26.

[0048] In practical applications, some existing heat exchangers 20 are configured as split-type structures to accommodate the different air velocities of each part. However, the multiple separate parts of a split-type heat exchanger 20 increase the overall scrap rate during manufacturing, raising production costs. Furthermore, the multiple separate parts of a split-type heat exchanger 20 require individual installation, increasing the installation difficulty. Therefore, this application sets the heat exchanger 20 as an integrated bow-shaped structure, which not only accommodates the different air velocities of each part but also reduces the scrap rate during manufacturing and simplifies installation.

[0049] like Figures 3 to 5As shown, in some embodiments, the area of ​​the central heat exchange unit 24 is the first heat exchange area A1, and the area of ​​the central enhanced heat transfer structure 25 is the first heat transfer area S1; wherein, the first quotient K1 = the first heat transfer area S1 / the first heat exchange area A1, and the first quotient K1 is greater than or equal to 0.2 and less than or equal to 0.6.

[0050] Specifically, when adjacent intermediate heat exchange units 24 share a common tube hole, the area of ​​the intermediate heat exchange unit 24 refers to the area between the centers of the two tube holes included in the intermediate heat exchange unit 24. Making the first quotient K1 greater than or equal to 0.2 and less than or equal to 0.6 can reduce the air resistance of the intermediate straight plate section 21 while ensuring its heat exchange efficiency. Users can determine the first quotient K1 according to actual needs; for example, the first quotient K1 can be 0.2, 0.3, 0.4, 0.5, or 0.6.

[0051] like Figures 3 to 5 As shown, in some embodiments, the area of ​​the upper heat exchange unit 24 is the second heat exchange area A2, and the area of ​​the upper enhanced heat transfer structure 25 is the second heat transfer area S2; wherein, the second quotient K2 = the second heat transfer area S2 / the second heat exchange area A2, and the second quotient K2 is greater than or equal to 0.4 and less than or equal to 0.8.

[0052] Specifically, when adjacent upper heat exchange units 24 share a common tube hole, the area of ​​the upper heat exchange unit 24 refers to the area between the centers of the two tube holes included in the upper heat exchange unit 24. Making the second quotient K2 greater than or equal to 0.4 and less than or equal to 0.8 can further improve the heat exchange efficiency of the upper straight plate section 22. Users can determine the second quotient K2 according to actual needs; for example, the second quotient K2 can be 0.4, 0.5, 0.6, 0.7, or 0.8.

[0053] In some embodiments, the value of the first quotient K1 divided by the second quotient K2 is greater than or equal to 0.5 and less than or equal to 0.95.

[0054] Specifically, the first quotient K1 is greater than or equal to 0.5 times the second quotient K2, and less than or equal to 0.95 times the second quotient K2. For example, the first quotient K1 divided by the second quotient K2 can be 0.5, 0.6, 0.7, 0.8, or 0.95. This setting can reduce the air resistance of the middle straight plate section 21 while ensuring the overall heat exchange efficiency of the heat exchanger 20.

[0055] like Figures 3 to 5As shown, in some embodiments, the area of ​​the lower heat exchange unit 24 is the third heat exchange area A3, and the area of ​​the lower enhanced heat transfer structure 25 is the third heat transfer area S3; wherein, the third quotient K3 = the third heat transfer area S3 / the third heat exchange area A3, and the third quotient K3 is greater than or equal to 0.4 and less than or equal to 0.8.

[0056] Specifically, when adjacent lower heat exchange units 24 share a common tube hole, the area of ​​the lower heat exchange unit 24 refers to the area between the centers of the two tube holes included in the lower heat exchange unit 24. Making the third quotient K3 greater than or equal to 0.4 and less than or equal to 0.8 can further improve the heat exchange efficiency of the upper straight plate section 22. Users can determine the third quotient K3 according to actual needs; for example, the third quotient K3 can be 0.4, 0.5, 0.6, 0.7, or 0.8.

[0057] In some embodiments, the value of the first quotient K1 divided by the third quotient K3 is greater than or equal to 0.5 and less than or equal to 0.95.

[0058] Specifically, the first quotient K1 is greater than or equal to 0.5 times the third quotient K3, and less than or equal to 0.95 times the third quotient K3. For example, the first quotient K1 divided by the third quotient K3 can be 0.5, 0.6, 0.7, 0.8, or 0.95. This setting can reduce the air resistance of the middle straight plate section 21 while ensuring the overall heat exchange efficiency of the heat exchanger 20.

[0059] like Figures 3 to 5 As shown, in some embodiments, the middle heat transfer strengthening structure 25 is configured as an open bridge structure, a louver structure, or a convex hull structure; the upper heat transfer strengthening structure 25 is configured as an open bridge structure, a louver structure, or a convex hull structure; and the lower heat transfer strengthening structure 25 is configured as an open bridge structure, a louver structure, or a convex hull structure.

[0060] Specifically, the middle straight plate section 21 is provided with at least one of a bridging structure, a louver structure, and a convex bulge structure to form a middle heat transfer enhancement structure 25. Similarly, the upper straight plate section 22 and the lower straight plate section 23 are also provided with at least one of a bridging structure, a louver structure, and a convex bulge structure to form an upper heat transfer enhancement structure 25 and a lower heat transfer enhancement structure 25, respectively.

[0061] It is understandable that setting structures such as louvers, bridging, or protrusions on the fins of heat exchanger 20 can enhance heat exchange, optimize fluid flow, and improve overall performance in different ways.

[0062] like Figures 1 to 8As shown, this embodiment of the present disclosure also provides an air conditioner including: a housing 10 and the aforementioned heat exchanger 20 for the air conditioner. The housing 10 is provided with a mounting cavity 11; the heat exchanger 20 for the air conditioner is installed in the mounting cavity 11.

[0063] Specifically, the housing 10 is provided with an installation cavity 11, and the side wall of the installation cavity 11 is also provided with snap fasteners such as clips or screws to form a fixing structure 15. The heat exchanger 20 can be snapped into the installation cavity by snap fasteners, or the heat exchanger 20 can be fastened to the installation cavity by fasteners.

[0064] An air conditioner using the heat exchanger 20 provided in this application can not only adapt to the wind speed at different positions on its windward side, but also avoid the risk of poor drainage on the surface of the heat exchanger 20, resulting in a better user experience.

[0065] like Figure 1 As shown, in some embodiments, the air conditioner further includes a fan 14. The fan 14 is disposed in the mounting cavity 11, and the fan 14 is located on one side of the heat exchanger 20; wherein the upper straight plate section 22 and the lower straight plate section 23 of the heat exchanger 20 are inclined toward the fan 14.

[0066] Specifically, the fan 14 is installed inside the air duct, and the fan 14 is located on the side of the heat exchanger 20 near the air inlet 12. The air outlet of the fan 14 is connected to the heat exchanger 20 through the air duct, and the airflow direction blown to the heat exchanger 20 is perpendicular to the heat exchanger 20 to increase the heat exchange efficiency between the heat exchanger 20 and the air.

[0067] like Figure 6 As shown, in some embodiments, the side wall of the heat exchanger 20 near the fan 14 is configured as the windward side wall 201, and the side wall of the heat exchanger 20 away from the fan 14 is configured as the leeward side wall 202; when the size and shape of the windward side wall 201 correspond to the size and shape of the leeward side wall 202, the air conditioner includes a plurality of heat exchangers 20; wherein the windward side wall 201 and leeward side wall 202 of adjacent heat exchangers 20 are fitted together.

[0068] Specifically, the air conditioner is equipped with multiple heat exchangers 20, which are stacked along the air outlet direction of the fan 14, i.e., the multiple heat exchangers 20 are evenly distributed in the horizontal direction, which can further improve the overall heat exchange efficiency of the heat exchangers 20. At the same time, by adopting the structure of stacking multiple heat exchangers 20, the size of a single heat exchanger 20 can be reduced, making it easier to manufacture the heat exchangers 20.

[0069] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A heat exchanger for an air conditioner, characterized by, Comprising: a middle straight plate section arranged in a vertical direction of the air conditioner, the middle straight plate section comprising a plurality of middle heat exchange units, and each of the plurality of middle heat exchange units is provided with a middle heat transfer strengthening structure; an upper straight plate section connected to an upper side of the middle straight plate section, the upper straight plate section comprising a plurality of upper heat exchange units, and each of the plurality of upper heat exchange units is provided with an upper heat transfer strengthening structure; and a lower straight plate section connected to a lower side of the middle straight plate section, the lower straight plate section comprising a plurality of lower heat exchange units, and each of the plurality of lower heat exchange units is provided with a lower heat transfer strengthening structure; wherein the lower straight plate section and the upper straight plate section are arranged obliquely towards the same side of the middle straight plate section.

2. The heat exchanger according to claim 1, wherein: an area of the middle heat exchange unit is a first heat exchange area A1, and an area of the middle heat transfer strengthening structure is a first heat transfer area S1; wherein a first quotient K1 = the first heat transfer area S1 / the first heat exchange area A1, the first quotient K1 is greater than or equal to 0.2, and less than or equal to 0.

6.

3. The heat exchanger according to claim 2, wherein: an area of the upper heat exchange unit is a second heat exchange area A2, and an area of the upper heat transfer strengthening structure is a second heat transfer area S2; wherein a second quotient K2 = the second heat transfer area S2 / the second heat exchange area A2, the second quotient K2 is greater than or equal to 0.4, and less than or equal to 0.

8.

4. The heat exchanger according to claim 3, wherein: a value of the first quotient K1 divided by the second quotient K2 is greater than or equal to 0.5, and less than or equal to 0.

95.

5. The heat exchanger according to claim 2, wherein: an area of the lower heat exchange unit is a third heat exchange area A3, and an area of the lower heat transfer strengthening structure is a third heat transfer area S3; wherein a third quotient K3 = the third heat transfer area S3 / the third heat exchange area A3, the third quotient K3 is greater than or equal to 0.4, and less than or equal to 0.

8.

6. The heat exchanger according to claim 5, wherein: a value of the first quotient K1 divided by the third quotient K3 is greater than or equal to 0.5, and less than or equal to 0.

95.

7. The heat exchanger according to claim 1, wherein: the middle heat transfer strengthening structure is configured as a bridge structure, a louver structure or a convex structure; the upper heat transfer strengthening structure is configured as a bridge structure, a louver structure or a convex structure; and / or the lower heat transfer strengthening structure is configured as a bridge structure, a louver structure or a convex structure. Comprising:

8. An air conditioner characterized by comprising: a casing provided with a mounting cavity; and the heat exchanger for the air conditioner according to any one of claims 1 to 7 is mounted in the mounting cavity. Further comprising: a fan arranged in the mounting cavity, and the fan is located at one side of the heat exchanger; 9. The air conditioner of claim 8, wherein wherein the upper straight plate section and the lower straight plate section of the heat exchanger are arranged obliquely towards the fan.

10. The air conditioner according to claim 9, wherein: ​ ​ The side wall surface of the heat exchanger close to the side of the fan is configured as a windward side wall surface, and the side wall surface of the heat exchanger away from the side of the fan is configured as a leeward side wall surface; In the case where the size and shape of the windward side wall surface and the size and shape of the leeward side wall surface are correspondingly arranged, the air conditioner comprises a plurality of the heat exchangers; The windward side wall surface and the leeward side wall surface of adjacent heat exchangers are arranged in close contact with each other.

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