Heat exchanger and air conditioner indoor unit

Abstract

The application provides a heat exchanger and an air conditioner indoor unit, wherein the heat exchanger comprises: at least two fins; and a heat exchange pipe penetrating through the fins; wherein at least part of two adjacent fins encloses a through noise reduction cavity. The transmission of noise sound waves is hindered by the noise reduction cavity to reduce the noise of the air conditioner indoor unit.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a heat exchanger and an indoor unit of an air conditioner. Background Technology

[0002] Because air conditioner compressors vibrate at different frequencies and experience unstable pressure within the pipes at varying output power, noise of various frequencies is generated. Furthermore, when the fan motor starts and operates, internal friction and vibration also produce periodic noise and disturbances. All of these noises can cause user dissatisfaction and reduce the overall user experience. Utility Model Content

[0003] This utility model provides a heat exchanger and an indoor air conditioning unit to solve the technical problem of excessive noise in air conditioners.

[0004] To achieve the above objectives, the heat exchanger proposed in this application includes: At least two fins; and, Heat exchange tubes pass through the multiple fins; Wherein, at least a portion of two adjacent fins enclose each other to form a through noise reduction cavity.

[0005] Optionally, in one embodiment, the heat exchange tube passes through the plurality of fins and the noise reduction cavity along a first direction; and openings are formed at both ends of the noise reduction cavity along a second direction, wherein the first direction is inclined to the second direction.

[0006] Optionally, in one embodiment, at least one of every two adjacent fins is bent to form a plurality of first grooves and a plurality of second grooves, the plurality of first grooves and the plurality of second grooves being located on both sides of the fin along the first direction, the first grooves and / or the second grooves enclosing the adjacent fins to form the noise reduction cavity, and openings being formed at both ends of the noise reduction cavity along the second direction, the first direction being inclined to the second direction.

[0007] Optionally, in one embodiment, each of the fins is bent to form a plurality of first grooves and a plurality of second grooves, wherein in every two adjacent fins, each of the first grooves of one fin is disposed opposite to and surrounds a second groove of the other fin to form the noise reduction cavity.

[0008] Optionally, in one embodiment, each fin includes a plurality of first heat exchange fins and a plurality of second heat exchange fins, the plurality of first heat exchange fins and the plurality of second heat exchange fins being staggered, each of the two ends of each first heat exchange fin being obliquely connected to a second heat exchange fin, and the two first heat exchange fins located at the two ends of each second heat exchange fin being centrally symmetrically arranged; along a first direction, each first heat exchange fin has a first side surface and a second side surface, at least a portion of the first side surface and the adjacent second heat exchange fin enclose to form a first groove, and at least a portion of the second side surface and the adjacent second heat exchange fin enclose to form a second groove.

[0009] Optionally, in one embodiment, the noise reduction cavity is polygonal in shape.

[0010] Optionally, in one embodiment, the first heat exchange plate is provided with a plurality of connecting holes for the heat exchange tube to pass through.

[0011] Optionally, in one embodiment, at least a portion of the surfaces of two adjacent fins are in contact with each other.

[0012] Optionally, in one embodiment, it further includes two end plates disposed opposite to each other along the first direction, with a plurality of fins located between the two end plates, one end plate blocking the slots of a plurality of first grooves of a fin, and the other end plate blocking the slots of a plurality of second grooves of a fin.

[0013] This application also proposes an indoor air conditioning unit, including the heat exchanger as described above.

[0014] The heat exchanger provided in this application forms a noise reduction cavity by enclosing adjacent fins. Noise causes air vibrations, which then propagate into the noise reduction cavity. The vibrating air is repeatedly reflected by the sidewalls of the noise reduction cavity, which attenuates the vibration amplitude of air molecules, thereby achieving the purpose of noise reduction and hindering the transmission of noise waves to reduce the noise of the indoor unit of the air conditioner. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the heat exchanger structure of this application; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the structure of multiple fins in this application; Figure 4 This is a schematic diagram of the structure of a single fin in this application; Figure 5 This is a schematic diagram of the structure of the indoor unit of the air conditioner in this application.

[0017] Explanation of icon numbers: 1. Fin; 11. First heat exchange fin; 111. Connecting hole; 12. Second heat exchange fin; 13. First groove; 14. Second groove; 2. Heat exchange tube; 3. End plate; 4. Noise reduction cavity; 5. Shell; 6. Compressor; 7. Fan.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model.

[0020] In the description of this application, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a unique orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0023] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0024] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0025] This application provides a heat exchanger to solve the problem of excessive noise in air conditioners. The following description will be provided in conjunction with the accompanying drawings.

[0026] In the embodiments of this application, such as Figure 1 as well as Figure 2 As shown, the heat exchanger includes: At least two fins 1; and, Heat exchange tube 2 passes through multiple fins 1; Among them, at least a portion of two adjacent fins 1 enclose each other to form a through noise reduction cavity 4.

[0027] It should be noted that the direction in which the heat exchange tube 2 passes through the fin 1 is different from the through direction of the noise reduction cavity 4. The through noise reduction cavity 4 means that the noise reduction cavity 4 has two oppositely arranged openings, and the two openings are located on both sides of the heat exchange tube 2. "At least part of two adjacent fins 1 enclose to form the through noise reduction cavity 4" means that there are some structures on the adjacent fins 1 that do not participate in the formation of the noise reduction cavity 4.

[0028] Understandably, by using adjacent fins 1 to form a noise reduction cavity 4, noise generated by other components in the air conditioner propagates into the noise reduction cavity 4 through the vibration of air molecules. The sidewalls of the noise reduction cavity 4 repeatedly reflect the sound waves, attenuating their energy and preventing further noise propagation or the generation of new noise from other components, thus reducing the overall noise of the indoor unit. Furthermore, the direction in which the heat exchange tube 2 passes through the fins 1 differs from the direction through which the noise reduction cavity 4 flows. This ensures direct heat exchange between the heat exchange tube 2 and the fins 1 while minimizing the difficulty for sound waves generated by the heat exchange tube 2 to enter the noise reduction cavity 4.

[0029] For example, in adjacent fins 1, the heat exchange tube 2 may pass through one fin 1, the noise reduction cavity 4, and another fin 1 in sequence, that is, at least a portion of the heat exchange tube 2 is located within the noise reduction cavity 4. Alternatively, the heat exchange tube 2 passes through at least a portion of adjacent fins 1 in sequence, and no noise reduction cavity 4 is formed between the at least a portion of the adjacent fins 1, that is, the heat exchange tube 2 is not located within the noise reduction cavity 4.

[0030] In some embodiments, such as Figure 2 As shown, along the first direction, the heat exchange tube 2 passes through multiple fins 1 and the noise reduction cavity 4; along the second direction, the two ends of the noise reduction cavity 4 form openings, and the first direction and the second direction are inclined.

[0031] It should be noted that "the first direction and the second direction are tilted" means that the angle between the first direction and the second direction is not equal to 0 degrees and is not equal to 180 degrees.

[0032] It is understandable that passing the heat exchange tube 2 through the noise reduction cavity 4 allows the airflow flowing through the noise reduction cavity 4 to exchange heat with the surface of the heat exchange tube 2, thereby improving the heat exchange efficiency of the heat exchanger.

[0033] For example, at least a portion of the heat exchange tube 2 passes through a plurality of fins 1 and a noise reduction cavity 4.

[0034] Specifically, the first direction is perpendicular to the second direction.

[0035] In some embodiments, such as Figure 3 as well as Figure 4As shown, at least one of two adjacent fins 1 is bent to form a plurality of first grooves 13 and a plurality of second grooves 14. The plurality of first grooves 13 and the plurality of second grooves 14 are respectively located on both sides of the fin 1 along the first direction. The first grooves 13 and / or the second grooves 14 surround the adjacent fins 1 to form a noise reduction cavity 4. Along the second direction, the two ends of the noise reduction cavity 4 form openings. The first direction is inclined to the second direction.

[0036] It should be noted that the fin 1 forms the first groove 13 and the second groove 14 on both sides of itself by reciprocating bending, and the multiple first grooves 13 and the multiple second grooves 14 are distributed alternately.

[0037] It is understandable that adjacent fins 1 are used to block the openings of the first groove 13 and / or the second groove 14 along the first direction, thereby forming a noise reduction cavity 4 that runs through the second direction. The structure is simple and easy to manufacture and assemble.

[0038] For example, the heat exchanger may include two fins 1, only one of which is bent, then the unbent fin 1 blocks the first groove 13 or the second groove 14 of the bent fin 1; and the part where the unbent fin 1 fits with the end of the groove can be used for the heat exchange tube 2 to pass through, and the heat exchange tube 2 can also pass through the two fins 1 and the noise reduction cavity 4 in the first direction.

[0039] In another example, the heat exchanger may include three or more fins 1, with the middle fin 1 being bent. Two unbent fins 1 respectively block the openings of the first groove 13 and the second groove 14 of the bent fin 1. Along the third direction, the plurality of first grooves 13 and the plurality of second grooves 14 are staggered, and the first direction, the second direction and the third direction are perpendicular to each other.

[0040] As another example, the shapes of the first groove 13 and the second groove 14 can be semicircular, triangular, rectangular, trapezoidal, or other irregular shapes, respectively. One side of the above shapes is located at the opening of the first groove 13 or the opening of the second groove 14. Furthermore, it is conceivable that the shape of the noise reduction cavity 4 can be semicircular, circular, triangular, rectangular, trapezoidal, or other irregular shapes.

[0041] In some embodiments, such as Figure 4 As shown, each fin 1 is bent to form multiple first grooves 13 and multiple second grooves 14. In every two adjacent fins 1, each first groove 13 of one fin is arranged opposite to a second groove 14 of the other fin and surrounds it to form a noise reduction cavity 4.

[0042] It is understandable that multiple noise reduction cavities are formed by multiple first grooves and multiple second grooves to improve the noise reduction effect.

[0043] In some embodiments, such as Figure 4 As shown, each fin 1 includes a plurality of first heat exchange fins 11 and a plurality of second heat exchange fins 12. Each first heat exchange fin 11 is inclinedly connected to a second heat exchange fin 12 at both ends. The two first heat exchange fins 11 located at both ends of each second heat exchange fin 12 are centrally symmetrically arranged. Along the first direction, each first heat exchange fin 11 has a first side surface and a second side surface. At least a portion of the first side surface and the adjacent second heat exchange fin 12 form a first groove 13, and at least a portion of the second side surface and the adjacent second heat exchange fin 12 form a second groove 14.

[0044] It should be noted that "each first heat exchange fin 11 is inclinedly connected to a second heat exchange fin 12 at both ends" means that the angle between the first heat exchange fin 11 and the adjacent second heat exchange fin 12 is not equal to 0 degrees and not equal to 180 degrees. The second heat exchange fins 12 connected to both ends of the first heat exchange fin 11 are symmetrically arranged about the center of the first heat exchange fin 11, meaning that the two second heat exchange fins 12 coincide after rotating 180 degrees about the geometric center of the first heat exchange fin 11. It is easy to imagine that the bending direction at the connection between the first heat exchange fin 11 and the two second heat exchange fins 12 connected to it is opposite, thus forming a first groove 13 and a second groove 14 located on opposite sides of the fin 1. The first side can serve as the bottom of the first groove 13, or it can fit against the second side of the first heat exchange fin 11 of the adjacent fin 1. Similarly, the second side can serve as the bottom of the second groove 14, or it can fit against the first side of the first heat exchange fin 11 of the adjacent fin 1.

[0045] It is understandable that by using multiple inclined first heat exchange plates 11 and second heat exchange plates 12 to form multiple first grooves 13 and multiple second grooves 14, more noise reduction cavities 4 are formed, increasing the number of noise reduction cavities 4 and further improving the noise reduction effect.

[0046] For example, the fins are repeatedly bent in a roughly S-shape.

[0047] In some embodiments, such as Figure 2 As shown, the noise reduction cavity 4 has a polygonal shape.

[0048] It should be noted that a polygon refers to a closed shape formed by three or more line segments, meaning that the noise reduction cavity 4 has at least three side walls.

[0049] Understandably, the noise reduction cavity 4 adopts a polygonal structure, which on the one hand increases the number of sound waves reflected in the noise reduction cavity 4 and improves the noise reduction effect, and on the other hand improves the connection stability between the fins 1 and reduces shaking.

[0050] For example, the noise reduction cavity 4 can be rectangular, pentagonal, or hexagonal. A regular hexagonal structure is preferred, as it not only increases the number of sound wave reflections but also helps prevent mistakes in production and makes automated production easier.

[0051] In some embodiments, such as Figure 4 As shown, the first heat exchange plate 11 is provided with a plurality of connecting holes 111, which are used for the heat exchange tube 2 to pass through.

[0052] It should be noted that the heat exchange tube 2 has multiple corresponding connecting holes 111.

[0053] It is understandable that the heat exchange tube 2 is fixedly supported by the connecting hole 111. In actual production, the heat exchange tube 2 is inserted into the connecting hole 111, and after the heat exchange tube 2 expands, it can be tightly expanded with the first heat exchange plate 11 to achieve effective heat exchange.

[0054] For example, each first heat exchange plate 11 of each fin 1 is provided with two connecting holes 111.

[0055] In some embodiments, such as Figure 2 As shown, at least a portion of the surfaces of two adjacent fins 1 are in contact with each other.

[0056] It is understandable that the mutual support between the two adjacent fins 1 greatly improves the structural stability of the entire heat exchanger and reduces noise generation from the source.

[0057] For example, a portion of the first side of the first heat exchange fin 11 is attached to the second side of the first heat exchange fin 11 of the adjacent fin 1.

[0058] In some embodiments, such as Figure 1 as well as Figure 2 As shown, the heat exchanger also includes two end plates 3 arranged opposite each other along a first direction, with a plurality of fins 1 located between the two end plates 3. One end plate 3 blocks the slots of a plurality of first grooves 13 of a fin 1, and the other end plate 3 blocks the slots of a plurality of second grooves 14 of a fin 1.

[0059] It is understandable that when all the fins 1 are bent to form the first groove 13 and the second groove 14, the cavity formed by the two end plates 3 and the two outermost fins 1 can also play a certain role in hindering the transmission of sound waves.

[0060] This application also provides an air conditioner indoor unit, which includes the heat exchanger described above. The specific structure of the heat exchanger is as described in the above embodiments. Since this air conditioner indoor unit adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0061] In some embodiments, such as Figure 5 As shown, the indoor unit of the air conditioner also includes a housing 5 and conventional components such as a fan 7 and a compressor 6 installed inside the housing 5, which will not be described in detail here.

[0062] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0063] The heat exchanger and air conditioning indoor unit provided in the embodiments of this application have been described in detail above. Specific examples have been used in this article to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A heat exchanger, characterized in that, include: At least two fins (1); and, Heat exchange tube (2) passes through multiple fins (1); Wherein, at least a portion of two adjacent fins (1) enclose each other to form a through noise reduction cavity (4).

2. The heat exchanger according to claim 1, characterized in that, Along the first direction, the heat exchange tube (2) passes through a plurality of fins (1) and the noise reduction cavity (4); along the second direction, the two ends of the noise reduction cavity (4) form openings, and the first direction is inclined to the second direction.

3. The heat exchanger according to claim 1, characterized in that, At least one of every two adjacent fins (1) is bent to form a plurality of first grooves (13) and a plurality of second grooves (14). The plurality of first grooves (13) and the plurality of second grooves (14) are respectively located on both sides of the fin (1) along a first direction. The first grooves (13) and / or the second grooves (14) together with the adjacent fins (1) form the noise reduction cavity (4). Along a second direction, the two ends of the noise reduction cavity (4) form openings. The first direction is inclined to the second direction.

4. The heat exchanger according to claim 3, characterized in that, Each of the fins (1) is bent to form a plurality of first grooves (13) and a plurality of second grooves (14). In every two adjacent fins (1), each of the first grooves (13) of one fin is disposed opposite to and encloses a second groove (14) of the other fin to form the noise reduction cavity (4).

5. The heat exchanger according to claim 4, characterized in that, Each fin (1) includes a plurality of first heat exchange fins (11) and a plurality of second heat exchange fins (12). Each first heat exchange fin (11) is inclinedly connected to a second heat exchange fin (12) at both ends. The two first heat exchange fins (11) located at both ends of each second heat exchange fin (12) are centrally symmetrically arranged. Along a first direction, each first heat exchange fin (11) has a first side surface and a second side surface. At least a portion of the first side surface and the adjacent second heat exchange fin (12) surround to form a first groove (13), and at least a portion of the second side surface and the adjacent second heat exchange fin (12) surround to form a second groove (14).

6. The heat exchanger according to claim 5, characterized in that, The noise reduction cavity (4) is polygonal in shape.

7. The heat exchanger according to claim 5, characterized in that, The first heat exchange plate (11) is provided with a plurality of connecting holes (111), which are used for the heat exchange tube (2) to pass through.

8. The heat exchanger according to any one of claims 1-7, characterized in that, At least a portion of the surfaces of two adjacent fins (1) are in contact with each other.

9. The heat exchanger according to claim 3, characterized in that, It also includes two end plates (3) arranged opposite to each other along the first direction, a plurality of fins (1) located between the two end plates (3), one end plate (3) blocking the slots of a plurality of first grooves (13) of a fin (1), and the other end plate (3) blocking the slots of a plurality of second grooves (14) of a fin (1).

10. An indoor unit for an air conditioner, characterized in that, Includes the heat exchanger as described in any one of claims 1-9.

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