Heat exchanger and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses a heat exchanger which comprises a main heat exchange tube, a second heat exchange tube, a first heat exchange tube and a second heat exchange tube, the pipe diameter of the main heat exchange pipe is a first pipe diameter; the first end of the auxiliary heat exchange tube is a second inlet, and the second end of the auxiliary heat exchange tube is a second outlet; the pipe diameter of the auxiliary heat exchange pipe is a second pipe diameter, and the second pipe diameter is smaller than the first pipe diameter; wherein the first outlet is communicated with the second inlet, and the auxiliary heat exchange tube is wound on the main heat exchange tube; a refrigerant enters the heat exchanger from the first inlet and flows out from the second outlet, and the auxiliary heat exchange pipe can exchange heat with the main heat exchange pipe, so that the heat exchange efficiency is improved. In this way, the auxiliary heat exchange tubes are arranged to replace conventional fins, and the overall heat exchange area of the heat exchanger is effectively increased. In addition, the pipe diameter of the auxiliary heat exchange pipe is smaller than that of the main heat exchange pipe, so that the auxiliary heat exchange pipe can be installed on the main heat exchange pipe in a compact winding mode. The utility model further discloses the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, for example, to a heat exchanger and an air conditioner. Background Art

[0002] The heat exchanger plays a key role in the air conditioner. It is responsible for cooling the refrigerant, regulating the room temperature through its efficient heat exchange function, and improving the overall operating efficiency of the air conditioning system. In addition, the heat exchanger is usually equipped with heat exchange fins, which expand the heat exchange area of ​​the heat exchanger and thus improve the performance of the heat exchanger.

[0003] The related art discloses a wing-shaped heat exchange fin tube, comprising a heat exchange tube and a fin arranged outside the heat exchange tube. The shape of the heat exchange tube is the same as the upper shape of an aircraft wing, and is called a wing-shaped heat exchange tube. The fin can be a longitudinal fin or a transverse fin. The longitudinal fin or transverse fin has various forms such as a flat fin, an indented fin, an open hole fin, a slotted fin, a corrugated fin or a spoke fin.

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

[0005] The heat exchange area increased by adding conventional fins is small and cannot meet the heat exchange requirements of the heat exchanger.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a heat exchanger and an air conditioner, which solve the problem that the heat exchange area added by conventional fins is too small to meet the heat exchange demand.

[0009] In some embodiments, the heat exchanger comprises:

[0010] The main heat exchange tube has a first end as a first inlet and a second end as a first outlet; and the diameter of the main heat exchange tube is a first diameter;

[0011] The auxiliary heat exchange tube has a first end as a second inlet and a second end as a second outlet; and the diameter of the auxiliary heat exchange tube is the second diameter, and the second diameter is smaller than the first diameter;

[0012] Among them, the first outlet is connected to the second inlet, and the auxiliary heat exchange tube is wound around the main heat exchange tube; the refrigerant enters the heat exchanger from the first inlet and flows out from the second outlet, and the auxiliary heat exchange tube can exchange heat with the main heat exchange tube, thereby improving the heat exchange efficiency.

[0013] Optionally, the main heat exchange tube comprises:

[0014] Multiple supervisor sections;

[0015] The hairpin tube has two ends respectively used to connect adjacent main pipe sections.

[0016] Optionally, the auxiliary heat exchange tube is wound around at least one main tube section.

[0017] Optionally, the auxiliary heat exchange tube is wound in a spiral form along the axial direction of the main tube section.

[0018] Optionally, the winding intervals of the auxiliary heat exchange tubes on the same main tube section are the same.

[0019] Optionally, the winding intervals of the auxiliary heat exchange tubes on different main tube sections are the same.

[0020] Optionally, the plurality of main pipe sections are divided into a first type of pipe section and a second type of pipe section, wherein the heat transfer coefficient of the first type of pipe section is smaller than the heat transfer coefficient of the second type of pipe section;

[0021] Furthermore, the winding interval of the auxiliary heat exchange tubes on the first type of tube section is smaller than the winding interval of the auxiliary heat exchange tubes on the second type of tube section.

[0022] Optionally, the first outlet is connected to the second inlet via a flow control valve.

[0023] Optionally, the heat exchanger further comprises:

[0024] The heat exchange fan is arranged on one side of the main heat exchange tube.

[0025] In some embodiments, the air conditioner includes the heat exchanger.

[0026] The heat exchanger and air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0027] By providing auxiliary heat exchange tubes to replace conventional fins, the heat exchange area of ​​the heat exchanger as a whole is effectively increased. In addition, the diameter of the auxiliary heat exchange tube is smaller than that of the main heat exchange tube, so that the auxiliary heat exchange tube can be installed on the main heat exchange tube in a compact winding manner. In this way, the auxiliary heat exchange tube only occupies a small installation space, and a longer auxiliary heat exchange tube can be arranged in a limited installation space, thereby improving the heat exchange efficiency while avoiding the large overall volume of the heat exchanger. In addition, the refrigerant enters the heat exchanger from the first inlet and flows out from the second outlet, that is, the refrigerant flows from the main heat exchange tube to the auxiliary heat exchange tube. In this way, as the refrigerant circulates, the refrigerant temperature in the auxiliary heat exchange tube is lower than the refrigerant temperature in the main heat exchange tube, and then the auxiliary heat exchange tube can exchange heat with the main heat exchange tube, thereby further improving the heat exchange efficiency.

[0028] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0030] Figure 1 is a structural schematic diagram of a first heat exchanger provided in an embodiment of the present disclosure;

[0031] Figure 2 is a structural schematic diagram of a second heat exchanger provided in an embodiment of the present disclosure;

[0032] Figure 3 It is a schematic diagram of the positions of the first type of pipe section and the second type of pipe section provided in the embodiment of the present disclosure;

[0033] Figure 4 is a wind speed schematic diagram of the heat exchange fins provided in an embodiment of the present disclosure;

[0034] Figure 5 It is a schematic diagram of the positions of the heat exchanger fins and the heat exchange fan provided in the embodiment of the present disclosure.

[0035] Reference numerals:

[0036] 100: main heat exchange tube; 101: first inlet; 102: first outlet; 110: auxiliary heat exchange tube; 111: second inlet; 112: second outlet; 120: hairpin tube; 130: heat exchange fan;

[0037] 200: heat exchange fin; 201: wing leading edge; 202: wing trailing edge; 210: first type of pipe section; 220: second type of pipe section. DETAILED DESCRIPTION

[0038] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0039] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0041] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" 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, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0042] Unless otherwise stated, the term "plurality" means two or more.

[0043] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0044] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0046] The heat exchanger plays a vital role in the air conditioner. It is a key component in the refrigerant circulation system of the air conditioner and has a direct impact on the performance and efficiency of the air conditioner. The refrigerant circulation system is mainly composed of four basic components: the compressor, the outdoor heat exchanger, the throttling device and the indoor heat exchanger, forming a closed circulation loop.

[0047] Among them, the compressor is the heart of the refrigerant circulation system. Its main task is to absorb the low-temperature and low-pressure refrigerant gas from the indoor heat exchanger and compress it into a high-temperature and high-pressure gas. After the high-temperature and high-pressure refrigerant gas enters the outdoor heat exchanger, it releases heat to the external environment through heat exchange with the outside air or cooling water, while cooling itself and forming a high-pressure liquid. When the high-pressure liquid passes through the throttling device, part of the liquid will evaporate into gas through throttling and pressure reduction, while absorbing the surrounding heat, further reducing the temperature and pressure of the refrigerant. After the low-pressure refrigerant liquid enters the indoor heat exchanger, it exchanges heat with the hot air in the room. The refrigerant absorbs the heat of the hot air and gradually changes from liquid to gas, while reducing the temperature of the indoor heat exchanger, thereby achieving the purpose of cooling the room.

[0048] In this way, the refrigerant circulates continuously to form a complete refrigeration cycle: the compressor compresses the refrigerant into high-temperature and high-pressure gas, the outdoor heat exchanger cools it into high-pressure liquid, the throttling device reduces the pressure of the refrigerant and partially evaporates it, and the indoor heat exchanger absorbs the indoor heat to evaporate the refrigerant into gas, which enters the compressor again to complete a refrigeration cycle. When heating, the refrigerant flows in the opposite direction. In this way, through the continuous circulation of the refrigerant, the air conditioner can effectively adjust the indoor temperature and provide people with a comfortable indoor environment.

[0049] Combination Figure 1 As shown, the embodiment of the present disclosure provides a first heat exchanger, including a main heat exchange tube 100 and an auxiliary heat exchange tube 110. The first end of the main heat exchange tube 100 is a first inlet 101, and the second end thereof is a first outlet 102; and the diameter of the main heat exchange tube is the first diameter; the first end of the auxiliary heat exchange tube 110 is a second inlet 111, and the second end thereof is a second outlet 112; and the diameter of the auxiliary heat exchange tube 110 is the second diameter, and the second diameter is smaller than the first diameter; the first outlet 102 is connected to the second inlet 111, and the auxiliary heat exchange tube 110 is wound around the main heat exchange tube 100; the refrigerant enters the heat exchanger from the first inlet 101 and flows out from the second outlet 112, and the auxiliary heat exchange tube 110 can exchange heat with the main heat exchange tube 100, thereby improving the heat exchange efficiency.

[0050] In this embodiment, by providing an auxiliary heat exchange tube 110 to replace conventional fins, the heat exchange area of ​​the heat exchanger as a whole is effectively increased. In addition, the diameter of the auxiliary heat exchange tube 110 is smaller than the diameter of the main heat exchange tube 100, so that the auxiliary heat exchange tube 110 can be installed on the main heat exchange tube 100 in a compact winding manner. In this way, the auxiliary heat exchange tube 110 only occupies a small installation space, and a longer auxiliary heat exchange tube 110 can be arranged in a limited installation space, thereby improving the heat exchange efficiency while avoiding the large volume of the heat exchanger as a whole. In addition, the refrigerant enters the heat exchanger from the first inlet 101 and flows out from the second outlet 112, that is, the refrigerant flows from the main heat exchange tube 100 to the auxiliary heat exchange tube 110. In this way, as the refrigerant circulates, the refrigerant temperature in the auxiliary heat exchange tube 110 is lower than the refrigerant temperature in the main heat exchange tube 100, and then the auxiliary heat exchange tube 110 can exchange heat with the main heat exchange tube 100, thereby further improving the heat exchange efficiency.

[0051] Optionally, the main heat exchange tube 100 includes a plurality of main tube sections and a hairpin tube 120. Both ends of the hairpin tube 120 are respectively used to connect adjacent main tube sections.

[0052] In this embodiment, the hairpin tube 120 is constructed in a U shape. The hairpin tube 120 enhances the connection strength and stability between the main pipe sections. The two ends of the hairpin tube 120 are respectively connected to the adjacent main pipe sections, forming a continuous fluid channel, so that the refrigerant can flow smoothly between the various main pipe sections. In addition, by adjusting the number and layout of the main pipe sections and the hairpin tube 120, the overall structure of the heat exchanger can be easily changed to adapt to different working environments and heat exchange requirements. This flexibility enables the heat exchanger to better adapt to various complex heat exchange scenarios and improves the application range of the heat exchanger.

[0053] Optionally, the auxiliary heat exchange tube 110 is wound around at least one main pipe section. In this way, the auxiliary heat exchange tube 110 can be wound or not wound according to the heat transfer coefficient of different main pipe sections, which is conducive to cost saving.

[0054] For example, due to the different positions of the plurality of main pipe sections, or the frost or dirt on the surface of some main pipe sections, the heat transfer coefficient of a part of the main pipe sections is small, and this part of the main pipe sections is called the first type of pipe section 210. In this case, the auxiliary heat exchange tube 110 (not shown) can be wound only on the first type of pipe section 210, which can improve the heat transfer effect of the first type of pipe section 210 and save costs.

[0055] In another exemplary embodiment, all the main pipe sections are wound with auxiliary heat exchange pipes 110. In this way, the heat exchange area of ​​the heat exchanger as a whole can be increased to a large extent.

[0056] Optionally, the auxiliary heat exchange tube 110 is wound in a spiral form along the axial direction of the main tube section.

[0057] In this embodiment, the spiral winding makes the contact between the auxiliary heat exchange tube 110 and the main pipe section closer. Moreover, compared with the traditional parallel arrangement, the spiral winding can make more effective use of space, so that the heat exchange area per unit volume is significantly increased, thereby effectively improving the heat exchange efficiency. Moreover, the auxiliary heat exchange tube 110 is tightly wound on the main pipe section in a spiral form, and the two form a relatively fixed structure. In this way, the deformation or damage of the two caused by vibration or external impact during the operation of the heat exchanger can be reduced, thereby increasing the service life of the heat exchanger.

[0058] Optionally, the winding intervals of the auxiliary heat exchange tubes 110 on the same main tube section are the same.

[0059] In this embodiment, since the winding intervals of the auxiliary heat exchange tubes 110 are the same, the refrigerant can evenly exchange heat with the auxiliary heat exchange tubes 110 when flowing through the main pipe section. In addition, the auxiliary heat exchange tubes 110 are evenly distributed on the main pipe section, which can reduce the risk of damage caused by local stress concentration. At the same time, the uniform winding interval also helps to maintain the structural balance of the heat exchanger and prevent vibration or instability during operation.

[0060] Optionally, the winding intervals of the auxiliary heat exchange tubes 110 on different main tube sections are the same.

[0061] In this embodiment, since the winding intervals of the auxiliary heat exchange tubes 110 on different main pipe sections are the same, the contact areas between different main pipe sections and the auxiliary heat exchange tubes 110 are substantially the same. In this way, the overall performance degradation caused by uneven heat exchange in local areas is avoided, ensuring that the entire heat exchanger has relatively consistent heat exchange efficiency on different main pipe sections.

[0062] Optionally, multiple main pipe sections are divided into a first type of pipe section 210 and a second type of pipe section 220, wherein the heat transfer coefficient of the first type of pipe section 210 is smaller than the heat transfer coefficient of the second type of pipe section 220; and the winding interval of the auxiliary heat exchange tube 110 on the first type of pipe section 210 is smaller than the winding interval of the auxiliary heat exchange tube 110 on the second type of pipe section 220 (not shown in the figure).

[0063] In this embodiment, by distinguishing pipe sections with different heat transfer coefficients and adjusting the winding interval of the auxiliary heat exchange tube 110 according to actual needs, the heat transfer performance of the entire heat exchanger can be optimized. For the first type of pipe section 210 with a smaller heat transfer coefficient, by reducing the winding interval of the auxiliary heat exchange tube 110, the heat transfer area of ​​the auxiliary heat exchange tube 110 after winding can be increased, and the heat transfer efficiency can be improved, thereby compensating for the lack of its heat transfer coefficient. For the second type of pipe section 220 with a larger heat transfer coefficient, an appropriate winding interval can maintain its efficient heat transfer performance while saving costs.

[0064] Optionally, the first outlet 102 is connected to the second inlet 111 through a flow control valve.

[0065] In this embodiment, the flow control valve can be used to accurately control the refrigerant flow rate, ensuring that the flow rate between the first outlet 102 and the second inlet 111 meets certain specific working conditions. In addition, the flow rate of the heat exchanger as a whole can be kept stable by adjusting the flow control valve, thereby preventing the performance of the heat exchanger from being reduced due to flow fluctuations.

[0066] Optionally, the heat exchanger further includes a heat exchange fan 130 , and the heat exchange fan 130 is disposed on one side of the main heat exchange tube 100 .

[0067] In this embodiment, when the heat exchange fan 130 is running, forced convection can be generated, so that the air flows through the main heat exchange tube 100 and the auxiliary heat exchange tube 110 more quickly and evenly, thereby enhancing the heat exchange effect between the air and the pipe. In this way, it is beneficial to quickly transfer heat from the pipe to the air or from the air to the pipe, thereby improving the overall heat exchange efficiency of the heat exchanger.

[0068] An embodiment of the present disclosure also provides an air conditioner, comprising the heat exchanger described in any of the above embodiments.

[0069] Combination Figure 2-5 As shown, the embodiment of the present disclosure provides a second heat exchanger, including a main heat exchange tube 100, a heat exchange fan 130 and a heat exchange fin 200. The heat exchange fan 130 is used to make air flow from the first side of the main heat exchange tube 100 to the second side thereof; the heat exchange fin 200 is constructed in an airfoil shape and is arranged on the main heat exchange tube; Figure 3 As shown, the two ends of the heat exchange fin 200 are respectively called the wing leading edge 201 and the wing trailing edge 202, and the width of the heat exchange fin 200 is called the wing thickness; wherein, the wing leading edge 201 is located on the first side of the main heat exchange tube 100, and the wing trailing edge 202 is located on the second side of the main heat exchange tube 100, so that the heat exchange fin 200 forms different wind speeds on both sides in the wing thickness direction.

[0070] In this embodiment, the heat exchange fan 130 effectively guides the air to flow from the first side to the second side of the main heat exchange tube 100, forming forced convection. In addition, the wing-shaped heat exchange fin 200 design cleverly utilizes the Bernoulli effect of fluid mechanics. The wing leading edge 201 is located on the first side of the main heat exchange tube 100, and the wing trailing edge 202 is located on the second side. This layout enables the air to form different air flow rates on both sides of the wing thickness direction when flowing through the fin. Figure 4As shown, the wind speed on the upper side in the wing thickness direction is greater than the wind speed on the lower side in the wing thickness direction. In this way, the heat exchange fins 200 form different heat exchange efficiencies on both sides in the wing thickness direction, and the heat exchange efficiency on the upper side in the wing thickness direction is greater than the heat exchange efficiency on the lower side. Therefore, the installation layout of the main heat exchange tubes and the heat exchange fins 200 can be optimized according to the heat exchange requirements of different main heat exchange tubes.

[0071] In this embodiment, the Bernoulli effect is a physical phenomenon that describes the phenomenon that when a fluid (such as a liquid or gas) flows in a pipe or a narrow area, an increase in velocity causes a decrease in pressure. According to the Bernoulli effect, when air flows over the upper surface of the wing, the air flow path is longer and the flow velocity is relatively faster due to the arched surface of the upper side. The air flow path over the lower surface of the wing is shorter and the flow velocity is relatively slower.

[0072] Optionally, the main heat exchange tube 100 includes a plurality of main tube sections, and the plurality of main tube sections are divided into a first type of tube section 210 (eg Figure 3 The main pipe section shown in the solid line) and the second type of pipe section 220 (such as Figure 3 The main pipe section is shown by the middle dotted line), wherein the heat transfer coefficient of the first type of pipe section 210 is smaller than the heat transfer coefficient of the second type of pipe section 220; and the first type of pipe section 210 is arranged near the heat exchange fin 200 in the upper part in the wing thickness direction, and the second type of pipe section 220 is arranged near the heat exchange fin 200 in the lower part in the wing thickness direction.

[0073] In this embodiment, by arranging main pipe sections with different heat transfer coefficients at different positions of the heat exchange fins 200, the heat exchange efficiency can be optimized. Since the heat exchange efficiency of the heat exchange fins 200 in the upper part in the wing thickness direction is higher, the first type of pipe section 210 with a smaller heat transfer coefficient is arranged in this area, which can make full use of its efficient heat transfer characteristics and achieve rapid heat transfer. At the same time, the heat transfer efficiency in the lower part in the wing thickness direction is relatively low, and the first type of pipe section 210 with a larger heat transfer coefficient is arranged in this area to ensure its heat transfer performance. In this way, by reasonably arranging the pipe sections, the overall heat exchange efficiency of the heat exchanger is improved.

[0074] Alternatively, if Figure 2 and Figure 5 As shown, the first type of tube segments 210 and the second type of tube segments 220 respectively form a row and extend from the wing leading edge 201 to the wing trailing edge 202, and the first type of tube segments 210 and the second type of tube segments 220 are staggered in the wing thickness direction.

[0075] In this embodiment, if the first type of pipe section 210 and the second type of pipe section 220 are arranged side by side in the wing thickness direction, the width of the heat exchanger will be larger. However, the first type of pipe section 210 and the second type of pipe section 220 are arranged in a staggered manner in the wing thickness direction, which can effectively reduce the overall width of the heat exchanger. In addition, the staggered arrangement can optimize the connection structure between the main pipe section and the heat exchange fin 200, so that the support between the main pipe sections is more balanced, thereby enhancing the structural stability of the entire heat exchanger.

[0076] Optionally, only one first-type pipe section 210 is arranged at the wing leading edge 201 of the heat exchange fin 200 .

[0077] In this embodiment, the heat exchange fin 200 is narrower at the wing leading edge 201. When the heat exchanger adopts a double row of main heat exchange tubes 100, only one first type pipe section 210 is arranged at the wing leading edge 201. In this way, the wing shape adapted to the heat exchange fin 200 optimizes the layout of the main heat exchange tube 100. In addition, the wing leading edge 201 is located upstream in the air flow direction, which is conducive to heat exchange of the first type pipe section 210 with a smaller heat exchange coefficient.

[0078] Optionally, only one second type tube segment 220 is arranged at the trailing edge 202 of the heat exchange fin 200 .

[0079] In this embodiment, the heat exchange fin 200 is narrower at the wing trailing edge 202. When the heat exchanger adopts double rows of main heat exchange tubes 100, only one second type tube section 220 is arranged at the wing trailing edge 202. In this way, the wing shape adapted to the heat exchange fin 200 optimizes the layout of the main heat exchange tube 100.

[0080] Optionally, the refrigerant flows from the first type of pipe section 210 to the second type of pipe section 220 .

[0081] In this embodiment, the temperature of the refrigerant is relatively high when it flows into the first type of pipe section 210. Under the action of the wing-shaped heat exchange fins 200, since the first type of pipe section 210 is arranged close to the upper part of the heat exchange fins 200 in the wing thickness direction, it is beneficial for the refrigerant to efficiently exchange heat in the first type of pipe section 210.

[0082] Optionally, the same heat exchange fin 200 is disposed through all the main pipe sections.

[0083] In this embodiment, the same heat exchange fin 200 is provided through all the main pipe sections, so that all the main pipe sections are tightly connected together to form an integral structure. This design enhances the overall stability of the heat exchanger and reduces the performance degradation caused by loose or deformed components.

[0084] Optionally, the axial directions of all main pipe sections are arranged in parallel; and a plurality of heat exchange fins 200 are evenly spaced apart along the axial direction of the main pipe section.

[0085] In this embodiment, the axial parallel arrangement of all main pipe sections ensures that the refrigerant can flow smoothly and evenly in the pipe, reducing the resistance of the refrigerant flow and the formation of vortices. This helps to reduce energy loss and improve heat exchange efficiency. In addition, multiple heat exchange fins 200 are evenly arranged at intervals, so that each heat exchange fin 200 can evenly exchange heat with the main pipe section, thereby achieving uniform distribution and transfer of heat.

[0086] Optionally, all the heat exchange fins 200 are parallel to each other.

[0087] In this embodiment, the design of the heat exchange fins 200 being parallel to each other makes the manufacturing process simpler and more standardized. In addition, when maintaining and replacing the fins, since the heat exchange fins 200 are arranged in an orderly manner, the operation is more convenient, which can reduce maintenance costs and time.

[0088] An embodiment of the present disclosure also provides an air conditioner, comprising the heat exchanger described in any of the above embodiments.

[0089] The above description and the accompanying drawings sufficiently illustrate the 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. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The 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 the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A heat exchanger, characterized in that: include: A main heat exchange tube (100), wherein a first end thereof is a first inlet (101), and a second end thereof is a first outlet (102); and a tube diameter of the main heat exchange tube (100) is a first tube diameter; The auxiliary heat exchange tube (110) has a first end as a second inlet (111) and a second end as a second outlet (112); and the diameter of the auxiliary heat exchange tube (110) is a second diameter, and the second diameter is smaller than the first diameter; The first outlet (102) is connected to the second inlet (111), and the auxiliary heat exchange tube (110) is wound around the main heat exchange tube (100); the refrigerant enters the heat exchanger from the first inlet (101) and flows out from the second outlet (112), and the auxiliary heat exchange tube (110) can exchange heat with the main heat exchange tube (100), thereby improving the heat exchange efficiency.

2. The heat exchanger according to claim 1, characterized in that: The main heat exchange tube (100) comprises: Multiple supervisor sections; The hairpin tube (120) has two ends respectively used to connect adjacent main tube sections.

3. The heat exchanger according to claim 2, characterized in that: The auxiliary heat exchange tube (110) is wound around at least one main tube section.

4. The heat exchanger according to claim 3, characterized in that The auxiliary heat exchange tube (110) is wound in a spiral form along the axial direction of the main tube section.

5. The heat exchanger according to claim 4, characterized in that: The winding intervals of the auxiliary heat exchange tubes (110) on the same main tube section are the same.

6. The heat exchanger according to claim 5, characterized in that The winding intervals of the auxiliary heat exchange tubes (110) on different main tube sections are the same.

7. The heat exchanger according to any one of claims 3 to 5, characterized in that: The plurality of main pipe sections are divided into a first type of pipe section (210) and a second type of pipe section (220), wherein the heat transfer coefficient of the first type of pipe section (210) is smaller than the heat transfer coefficient of the second type of pipe section (220); Furthermore, the winding interval of the auxiliary heat exchange tube (110) on the first type of tube section (210) is smaller than the winding interval of the auxiliary heat exchange tube (110) on the second type of tube section (220).

8. The heat exchanger according to any one of claims 1 to 6, characterized in that: The first outlet (102) is connected to the second inlet (111) via a flow control valve.

9. The heat exchanger according to any one of claims 1 to 6, characterized in that: Also includes: The heat exchange fan (130) is arranged on one side of the main heat exchange tube (100).

10. An air conditioner, characterized in that: Comprising the heat exchanger according to any one of claims 1 to 9.

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