Coiled pipe type variable shunting heat exchanger and air conditioning system

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a serpentine pipe type variable flow dividing heat exchanger which comprises a first heat exchange module, and the first heat exchange module comprises a first serpentine heat exchange pipe set which comprises a first serpentine heat exchange pipe, a second serpentine heat exchange pipe and a third serpentine heat exchange pipe; and a first flow path switching assembly. When the snake-shaped pipe type variable flow dividing heat exchanger serves as an evaporator, the first flow path switching assembly enables the first snake-shaped heat exchange pipe, the second snake-shaped heat exchange pipe and the third snake-shaped heat exchange pipe to be communicated in parallel. When the serpentine pipe type variable flow dividing heat exchanger serves as a condenser, the first flow path switching assembly enables the first serpentine heat exchange pipe, the second serpentine heat exchange pipe and the third serpentine heat exchange pipe to communicate in series. According to the snake-shaped pipe type variable flow dividing heat exchanger, the number of welding spots of the heat exchanger is reduced, and the risk of refrigerant leakage is reduced. The utility model further provides an air conditioning system.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, for example, to a serpentine tube type variable split flow heat exchanger and an air conditioning system. Background Art

[0002] The heat exchanger in existing dual-mode air conditioners for cooling and heating functions as an evaporator and condenser in different modes. When used as a condenser, a subcooling section is typically added to improve the refrigerant's heat absorption efficiency. However, when used as an evaporator, the subcooling section increases system flow pressure drop, reducing the heat exchanger's heat release efficiency. Therefore, for dual-mode air conditioners, when used as an evaporator, the heat exchanger needs to have more parallel flow paths, reduce piping length, reduce pressure loss, and improve heat exchange efficiency. When used as a condenser, the number of parallel flow paths needs to be reduced, piping length needs to be increased, and the refrigerant flow rate needs to be increased to improve heat exchange efficiency.

[0003] The existing variable split heat exchanger can enable the heat exchanger to have different refrigerant flow paths when serving as an evaporator and a condenser, respectively, thereby achieving higher heat exchange efficiency when the air-conditioning system operates in both heating mode and cooling mode.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] Most existing variable split flow heat exchangers are tube-and-fin heat exchangers, which have many welding points at both ends of the heat exchange tubes, posing a risk of refrigerant leakage.

[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 this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this 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 elements 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 serpentine tube type variable split heat exchanger and an air conditioning system to solve the problem that the tube-fin type variable split heat exchanger has many welding points and there is a risk of refrigerant leakage.

[0009] In some embodiments, the serpentine-tube variable split heat exchanger includes a first heat exchange module, wherein the first heat exchange module includes: a first serpentine heat exchange tube group, including a first serpentine heat exchange tube, a second serpentine heat exchange tube and a third serpentine heat exchange tube; and a first flow switching component, which is connected to the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube, wherein, when the serpentine-tube variable split heat exchanger is used as an evaporator, the first flow switching component connects the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube in parallel; when the serpentine-tube variable split heat exchanger is used as a condenser, the first flow switching component connects the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube in series.

[0010] In some optional embodiments, the first serpentine heat exchange tube includes a first serpentine tube inlet and a first serpentine tube outlet, the second serpentine tube includes a second serpentine tube inlet and a second serpentine tube outlet, and the third serpentine tube includes a third serpentine tube inlet and a third serpentine tube outlet, wherein the first flow path switching assembly includes a first conductive component arranged on the first manifold and a second conductive component arranged on the second manifold, and the first serpentine tube inlet is connected to the conductive outflow end side of the first conductive component of the first manifold, the second serpentine tube inlet and the third serpentine tube inlet are connected to the conductive inflow end side of the first conductive component of the first manifold, the first serpentine tube outlet and the second serpentine tube outlet are connected to the conductive outflow end side of the second conductive component of the second manifold, and the third serpentine tube outlet is connected to the conductive inflow end side of the second conductive component of the second manifold.

[0011] In some optional embodiments, the inner diameter of the first serpentine heat exchange tube is greater than or equal to the inner diameter of the second serpentine heat exchange tube.

[0012] In some optional embodiments, the inner diameter of the second serpentine heat exchange tube is greater than or equal to the inner diameter of the third serpentine heat exchange tube.

[0013] In some optional embodiments, the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube are arranged in sequence from top to bottom.

[0014] In some optional embodiments, the first serpentine heat exchange tube includes a plurality of heat exchange tube sections that are bent, connected, and integrally formed, and the surfaces of the heat exchange tube sections are provided with insert-type heat sinks.

[0015] In some optional embodiments, the second serpentine heat exchange tube includes a plurality of heat exchange tube sections that are bent, connected, and integrally formed, and the surfaces of the heat exchange tube sections are provided with insert-type heat sinks.

[0016] In some optional embodiments, the third serpentine heat exchange tube includes a plurality of heat exchange tube sections that are bent, connected, and integrally formed, and the surfaces of the heat exchange tube sections are provided with insert-type heat sinks.

[0017] In some optional embodiments, the distance between the second conductive component and the second serpentine tube outlet is a first distance, and the distance between the second conductive component and the third serpentine tube outlet is a second distance, wherein the first distance is greater than or equal to the second distance.

[0018] In some optional embodiments, a first discrete element is provided between the second conductive component and the second serpentine tube outlet, wherein, when the serpentine tube variable split heat exchanger is used as an evaporator, the refrigerant in the second manifold passes through the second conductive component and then flows into the second serpentine tube outlet through the first discrete element.

[0019] In some optional embodiments, the serpentine-tube variable split heat exchanger also includes a second heat exchange module, wherein the second heat exchange module includes: a second serpentine heat exchange tube group, including a fourth serpentine heat exchange tube, a fifth serpentine heat exchange tube and a sixth serpentine heat exchange tube; and a second flow switching component, which is connected to the fourth serpentine heat exchange tube, the fifth serpentine heat exchange tube and the sixth serpentine heat exchange tube, wherein, when the serpentine-tube variable split heat exchanger is used as an evaporator, the second flow switching component connects the fourth serpentine heat exchange tube, the fifth serpentine heat exchange tube and the sixth serpentine heat exchange tube in parallel; when the serpentine-tube variable split heat exchanger is used as a condenser, the second flow switching component connects the fourth serpentine heat exchange tube, the fifth serpentine heat exchange tube and the sixth serpentine heat exchange tube in series.

[0020] In some optional embodiments, the second heat exchange module is disposed below the first heat exchange module.

[0021] In some embodiments, the air conditioning system includes the aforementioned serpentine tube variable split heat exchanger.

[0022] The serpentine tube variable split flow heat exchanger and air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0023] The serpentine-tube variable flow-diverting heat exchanger provided in the embodiment of the present disclosure includes a first serpentine heat exchange tube group and a first flow path switching component. The first serpentine heat exchange tube group includes a first serpentine heat exchange tube, a second serpentine heat exchange tube and a third serpentine heat exchange tube. The first flow path switching component can switch the connection mode of the three serpentine heat exchange tubes. When the serpentine-tube variable flow-diverting heat exchanger is used as an evaporator, the first flow path switching component can connect the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube in parallel. When the serpentine-tube variable flow-diverting heat exchanger is used as a condenser, the first flow path switching component can connect the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube in series.

[0024] It can be seen that in the serpentine tube variable split heat exchanger provided in the embodiment of the present disclosure, the provision of the first flow path switching assembly can enable the heat exchanger to have a higher heat exchange efficiency when serving as an evaporator and a condenser.

[0025] At the same time, the first serpentine heat exchange tube group of the serpentine tube type variable split heat exchanger includes at least three serpentine heat exchange tubes. The setting of the serpentine heat exchange tubes reduces the number of welding points of the entire heat exchanger, improves the production efficiency of the variable split heat exchanger, and at the same time avoids the problem of refrigerant leakage caused by the presence of more welding points, thereby improving the safety of the variable split heat exchanger.

[0026] 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

[0027] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0028] Figure 1 Schematic diagram of the structure of a serpentine tube variable split flow heat exchanger provided by an embodiment of the present disclosure;

[0029] Figure 2 1 is a schematic structural diagram of a first serpentine heat exchange tube provided in an embodiment of the present disclosure;

[0030] Figure 3 This is a schematic diagram of the piping connections of a serpentine tube type variable split flow heat exchanger provided by an embodiment of the present disclosure;

[0031] Figure 4 Schematic diagram of the piping connection of another serpentine tube type variable split flow heat exchanger provided by an embodiment of the present disclosure;

[0032] Figure 5 This is a schematic diagram of the refrigerant flow path when a serpentine tube type variable split flow heat exchanger provided by an embodiment of the present disclosure is used as a condenser;

[0033] Figure 6 This is a schematic diagram of the refrigerant flow path when a serpentine tube type variable split flow heat exchanger is used as an evaporator according to an embodiment of the present disclosure;

[0034] Figure 7 It is a structural schematic diagram of another serpentine tube type variable split flow heat exchanger provided in an embodiment of the present disclosure.

[0035] Reference numerals:

[0036] 1: Gas collecting main;

[0037] 100: First heat exchange module; 101: First header; 1011: First conductive component; 102: Second header; 1021: Second conductive component; 11: First serpentine heat exchange tube; 12: Second serpentine heat exchange tube; 13: Third serpentine heat exchange tube; 111: First serpentine tube inlet; 112: First serpentine tube outlet; 121: Second serpentine tube inlet; 122: Second serpentine tube outlet; 131: Third serpentine tube inlet; 132: Third serpentine tube outlet; 1111: Heat exchange tube section; 1112: Inserted heat sink;

[0038] 200: second heat exchange module; 21: fourth serpentine heat exchange tube; 22: fifth serpentine heat exchange tube; 23: sixth serpentine heat exchange tube;

[0039] 300: Liquid dispensing element. DETAILED DESCRIPTION

[0040] In order to be able to understand the features and technical content 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 accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of 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.

[0041] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0042] 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 having 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.

[0043] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0044] Unless otherwise stated, the term "plurality" means two or more.

[0045] 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 means: A or B.

[0046] 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.

[0047] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0048] The embodiment of the present disclosure provides a serpentine tube type variable flow split heat exchanger. Figures 1 to 7 shown.

[0049] Optionally, the serpentine-tube variable flow split heat exchanger includes a first heat exchange module 100, wherein the first heat exchange module 100 includes a first serpentine heat exchange tube group and a first flow path switching assembly. The first serpentine heat exchange tube group includes a first serpentine heat exchange tube 11, a second serpentine heat exchange tube 12, and a third serpentine heat exchange tube 13; the first flow path switching assembly is connected to the first serpentine heat exchange tube 11, the second serpentine heat exchange tube 12, and the third serpentine heat exchange tube 13.

[0050] When the serpentine tube variable flow split heat exchanger is used as an evaporator, the first flow path switching component connects the first serpentine heat exchange tube 11, the second serpentine heat exchange tube 12 and the third serpentine heat exchange tube 13 in parallel. Figure 6 When the serpentine tube variable split heat exchanger is used as a condenser, the first flow path switching component connects the first serpentine heat exchange tube 11, the second serpentine heat exchange tube 12 and the third serpentine heat exchange tube 13 in series, as shown Figure 5 shown.

[0051] The disclosed embodiments provide a serpentine-tube variable flow-dividing heat exchanger, comprising a first serpentine heat exchange tube group and a first flow path switching assembly. When the serpentine-tube variable flow-dividing heat exchanger functions as an evaporator, the three serpentine heat exchange tubes form a parallel refrigerant flow path. When the serpentine-tube variable flow-dividing heat exchanger functions as a condenser, the three serpentine heat exchange tubes form a series refrigerant flow path. This allows for variable connection between the different heat exchange tubes.

[0052] As mentioned above, most current variable split flow heat exchangers are tube-fin heat exchangers, in which the heat exchange tubes and fins need to be connected using a tube expansion process. In addition, the threaded tubes have inverted teeth, which can lead to reduced heat exchange performance.

[0053] In the serpentine tube variable split heat exchanger provided by the embodiment of the present disclosure, the connection between the heat sink and the heat exchange tube section 1111 of the serpentine heat exchange tube is a plug-in connection, which does not require a tube expansion process and avoids the problem of reduced heat exchange efficiency caused by the inverted teeth of the threaded tube.

[0054] Furthermore, the serpentine-tube variable flow split heat exchanger provided in the disclosed embodiments features an integrally formed serpentine structure, which reduces the number of weld points and improves the production efficiency of the variable flow split heat exchanger. Furthermore, the reduced number of weld points also reduces the risk of refrigerant leakage, improving the safety of the variable flow split heat exchanger.

[0055] It is understood that the first serpentine heat exchange tube group includes at least the first serpentine heat exchange tube 11, the second serpentine heat exchange tube 12 and the third serpentine heat exchange tube 13. To meet the operating requirements of the air conditioning system, the first serpentine heat exchange tube group may also include a larger number of serpentine heat exchange tubes.

[0056] Optionally, the first serpentine heat exchange tube 11, the second serpentine heat exchange tube 12, and the third serpentine heat exchange tube 13 may have the same number of bends, length, inner diameter, or material. This allows for modularization of individual serpentine heat exchange tubes, allowing the required number of serpentine heat exchange tubes to be determined based on the heat exchange requirements of the air conditioning system.

[0057] Optionally, the first serpentine heat exchange tube 11 includes a first serpentine tube inlet 111 and a first serpentine tube outlet 112, the second serpentine heat exchange tube 12 includes a second serpentine tube inlet 121 and a second serpentine tube outlet 122, and the third serpentine heat exchange tube 13 includes a third serpentine tube inlet 131 and a third serpentine tube outlet 132, wherein the first flow path switching assembly includes a first conductive component 1011 provided on the first header 101 and a second conductive component 1021 provided on the second header 102, and the first serpentine tube inlet 11 1 is connected to the conduction outflow end side of the first conduction component 1011 of the first header 101, the second serpentine pipe inlet 121 and the third serpentine pipe inlet 131 are connected to the conduction inflow end side of the first conduction component 1011 of the first header 101, the first serpentine pipe outlet 112 and the second serpentine pipe outlet 122 are connected to the conduction outflow end side of the second conduction component 1021 of the second header 102, and the third serpentine pipe outlet 132 is connected to the conduction inflow end side of the second conduction component 1021 of the second header 102.

[0058] Optionally, the material of the first and second headers 101, 102 is different from the material of the multiple serpentine heat exchange tubes. For example, the first and second headers 101, 102 can be made of stainless steel or other metal materials. Optionally, the inner diameters of the first and second headers 101, 102 are different from the inner diameters of the serpentine heat exchange tubes. For example, the inner diameters of the first and second headers 101, 102 are larger than the inner diameters of the serpentine heat exchange tubes.

[0059] Optionally, the first conducting component 1011 is a unidirectional conducting component, conducting in a unidirectional direction from the conducting inlet end to the conducting outlet end. The first conducting component 1011 may be a one-way valve, a controllable unidirectional solenoid valve, or other unidirectional conducting component. When the serpentine-tube variable flow split heat exchanger functions as an evaporator, the first conducting component 1011 is conductive; when the serpentine-tube variable flow split heat exchanger functions as a condenser, the first conducting component 1011 is closed.

[0060] Similarly, the second conducting component 1021 is a unidirectional conducting component, conducting from the inlet end to the outlet end. The second conducting component 1021 can be a one-way valve, a controllable unidirectional solenoid valve, or other unidirectional conducting component. When the serpentine-tube variable flow split heat exchanger functions as an evaporator, the second conducting component 1021 is conductive; when the serpentine-tube variable flow split heat exchanger functions as a condenser, the second conducting component 1021 is closed.

[0061] Optionally, the inner diameter of the first serpentine heat exchange tube 11 is greater than or equal to the inner diameter of the second serpentine heat exchange tube 12 .

[0062] In the embodiment of the present disclosure, the inner diameter of the first serpentine heat exchange tube 11 is larger than the inner diameter of the second serpentine heat exchange tube 12. Thus, when the first serpentine heat exchange tube 11 is located above the second serpentine heat exchange tube 12, and the serpentine-tube variable flow split heat exchanger is used as an evaporator, the refrigerant flowing through the second conductive component 1021 must overcome a greater gravity before it can flow into the first serpentine heat exchange tube 11 located above. In the embodiment of the present disclosure, the inner diameter of the first serpentine heat exchange tube 11 is larger, which reduces the flow resistance of the first serpentine heat exchange tube 11, improves the uniformity of the refrigerant distribution in the first serpentine heat exchange tube 11 and the second serpentine heat exchange tube 12, and improves the heat exchange uniformity and heat exchange efficiency of the serpentine-tube variable flow split heat exchanger.

[0063] Optionally, the inner diameter of the second serpentine heat exchange tube 12 is greater than or equal to the inner diameter of the third serpentine heat exchange tube 13 .

[0064] In the disclosed embodiment, the inner diameter of the second serpentine heat exchange tube 12 is larger than the inner diameter of the third serpentine heat exchange tube 13. Thus, when the serpentine-tube variable flow split heat exchanger is used as an evaporator, the refrigerant flowing in from the refrigerant inlet and outlet of the second header 102 can flow directly into the third serpentine heat exchange tube 13. However, the refrigerant must overcome the resistance of the second conductive component 1021 before flowing into the second serpentine heat exchange tube 12. In the disclosed embodiment, the inner diameter of the second serpentine heat exchange tube 12 is larger than the inner diameter of the third serpentine heat exchange tube 13. This reduces the flow resistance of the second serpentine heat exchange tube 12, improves the uniformity of refrigerant distribution within the second and third serpentine heat exchange tubes 12, and improves the heat exchange uniformity and heat exchange efficiency of the serpentine-tube variable flow split heat exchanger.

[0065] Optionally, the first serpentine heat exchange tube 11 , the second serpentine heat exchange tube 12 and the third serpentine heat exchange tube 13 are arranged in sequence from top to bottom.

[0066] In the embodiment of the present disclosure, the first serpentine heat exchange tube 11, the second serpentine heat exchange tube 12 and the third serpentine heat exchange tube 13 are arranged in sequence from top to bottom along the height direction, as shown in FIG. Figure 1 Optionally, the serpentine tube type variable flow split heat exchanger may further include other serpentine heat exchange tubes, which may be sequentially arranged below the third serpentine heat exchange tube 13 .

[0067] Optionally, the first serpentine heat exchange tube 11 includes a plurality of bent and connected integrally formed heat exchange tube segments 1111, and the surface of the heat exchange tube segment 1111 is provided with a plug-in heat sink 1112, such as Figure 2 As shown; and / or, the second serpentine heat exchange tube 12 includes multiple sections of bent, connected and integrally formed heat exchange tube segments, and the surfaces of the heat exchange tube segments are provided with insert-type heat sinks; and / or, the third serpentine heat exchange tube 13 includes multiple sections of bent, connected and integrally formed heat exchange tube segments, and the surfaces of the heat exchange tube segments are provided with insert-type heat sinks.

[0068] The multiple heat exchange tube segments of the first, second, and third serpentine heat exchange tubes 11, 12, and 13 are integrally formed, resulting in a continuously curved serpentine tube. This reduces the number of welds throughout the variable flow split heat exchanger and improves the heat exchanger's safety. Furthermore, the outer surface of the serpentine tubes is provided with insert-type heat sinks, eliminating the need for expansion and avoiding the reduced heat exchange efficiency associated with undercutting of threaded tubes.

[0069] Optionally, the distance between the second conductive component 1021 and the second serpentine tube outlet 122 is a first distance h1, and the distance between the second conductive component 1021 and the third serpentine tube outlet 132 is a second distance h2, wherein the first distance h1 is greater than or equal to the second distance h2.

[0070] The distance between the second conductive component 1021 and the second serpentine outlet 122 can be understood as the vertical distance h1 between the middle of the second conductive component 1021 and the second serpentine outlet 122. Similarly, the distance between the second conductive component 1021 and the third serpentine outlet 132 can be understood as the vertical distance h2 between the middle of the second conductive component 1021 and the third serpentine outlet 132. Figure 4 shown.

[0071] In the disclosed embodiment, the first distance h1 is greater than the second distance h2, so that the second conductive component 1021 can better play the role of blocking liquid. When the serpentine tube variable split heat exchanger is used as an evaporator, more refrigerant can flow into the third serpentine heat exchange tube 13 located at the bottom.

[0072] Optionally, a first discrete element is provided between the second conductive component 1021 and the second serpentine tube outlet 122, wherein, when the serpentine tube variable split heat exchanger is used as an evaporator, the refrigerant in the second manifold 102 passes through the second conductive component 1021 and then flows into the second serpentine tube outlet 122 through the first discrete element.

[0073] In the disclosed embodiment, a first discrete element is disposed between the second conducting component 1021 and the second serpentine tube outlet 122. This first discrete element can disperse the refrigerant flowing out of the second conducting component 1021, mixing it uniformly before it flows into the second serpentine heat exchange tube 12. This improves the uniformity of the gas-liquid mixing of the refrigerant flowing into the second serpentine heat exchange tube 12 and the stability of the refrigerant flow. Alternatively, the first discrete element can be a structural member with holes, such as a filter or a perforated plate.

[0074] Optionally, the serpentine-tube variable flow split heat exchanger further includes a second heat exchange module 200, wherein the second heat exchange module 200 includes a second serpentine heat exchange tube group and a second flow path switching assembly. The second serpentine heat exchange tube group includes a fourth serpentine heat exchange tube 21, a fifth serpentine heat exchange tube 22, and a sixth serpentine heat exchange tube 23, and the second flow path switching assembly is connected to the fourth serpentine heat exchange tube 21, the fifth serpentine heat exchange tube 22, and the sixth serpentine heat exchange tube 23. When the serpentine-tube variable flow split heat exchanger is used as an evaporator, the second flow path switching assembly connects the fourth serpentine heat exchange tube 21, the fifth serpentine heat exchange tube 22, and the sixth serpentine heat exchange tube 23 in parallel; when the serpentine-tube variable flow split heat exchanger is used as a condenser, the second flow path switching assembly connects the fourth serpentine heat exchange tube 21, the fifth serpentine heat exchange tube 22, and the sixth serpentine heat exchange tube 23 in series. Optionally, the second heat exchange module 200 is disposed below the first heat exchange module 100. Figure 7 shown.

[0075] Similar to the first heat exchange module 100 , the second heat exchange module 200 is also a serpentine-tube variable split heat exchanger.

[0076] The serpentine-tube variable flow split heat exchanger provided in the embodiment of the present disclosure includes at least a first heat exchange module 100 and a second heat exchange module 200. The heat exchanger with a longer flow is divided into two convertible heat modules. The first heat exchange module 100 and the second heat exchange module 200 are connected through the gas collecting main pipe 1, and liquid separation is performed through the liquid separation element 300. When the serpentine-tube variable flow split heat exchanger is used as a condenser, the refrigerant flows into the first heat exchange module 100 and the second heat exchange module 200 respectively through the gas collecting main pipe 1; when the serpentine-tube variable flow split heat exchanger is used as an evaporator, the refrigerant flows into the first heat exchange module 100 and the second heat exchange module 200 respectively through the liquid separation element 300.

[0077] An embodiment of the present disclosure further provides an air-conditioning system, comprising the aforementioned serpentine tube type variable split flow heat exchanger.

[0078] It is understandable that the structure and effects achieved by the aforementioned serpentine tube variable split heat exchanger are applicable to the air-conditioning system herein and will not be described in detail herein.

[0079] 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 expressly 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 serpentine tube type variable split flow heat exchanger, characterized in that: The first heat exchange module comprises: A first serpentine heat exchange tube group includes a first serpentine heat exchange tube, a second serpentine heat exchange tube and a third serpentine heat exchange tube; and The first flow path switching component is connected to the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube. Among them, when the serpentine tube type variable split heat exchanger is used as an evaporator, the first flow path switching component connects the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube in parallel; when the serpentine tube type variable split heat exchanger is used as a condenser, the first flow path switching component connects the first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube in series.

2. The serpentine tube type variable flow split heat exchanger according to claim 1, characterized in that: The first serpentine heat exchange tube includes a first serpentine tube inlet and a first serpentine tube outlet, the second serpentine heat exchange tube includes a second serpentine tube inlet and a second serpentine tube outlet, and the third serpentine heat exchange tube includes a third serpentine tube inlet and a third serpentine tube outlet. Among them, the first flow path switching component includes a first conductive component arranged on the first collection pipe and a second conductive component arranged on the second collection pipe, and the first serpentine tube inlet is connected to the conductive outflow end side of the first conductive component of the first collection pipe, the second serpentine tube inlet and the third serpentine tube inlet are connected to the conductive inflow end side of the first conductive component of the first collection pipe, the first serpentine tube outlet and the second serpentine tube outlet are connected to the conductive outflow end side of the second conductive component of the second collection pipe, and the third serpentine tube outlet is connected to the conductive inflow end side of the second conductive component of the second collection pipe.

3. The serpentine tube type variable flow split heat exchanger according to claim 2, characterized in that: The inner diameter of the first serpentine heat exchange tube is greater than or equal to the inner diameter of the second serpentine heat exchange tube; and / or, The inner diameter of the second serpentine heat exchange tube is greater than or equal to the inner diameter of the third serpentine heat exchange tube.

4. The serpentine tube type variable flow split heat exchanger according to claim 3, characterized in that: The first serpentine heat exchange tube, the second serpentine heat exchange tube and the third serpentine heat exchange tube are arranged in sequence from top to bottom.

5. The serpentine tube type variable flow split heat exchanger according to claim 2, characterized in that: The first serpentine heat exchange tube comprises a plurality of heat exchange tube sections that are bent, connected and integrally formed, and the surfaces of the heat exchange tube sections are provided with insert-type heat sinks; and / or, The second serpentine heat exchange tube comprises a plurality of heat exchange tube sections that are bent, connected and integrally formed, and the surfaces of the heat exchange tube sections are provided with insert-type heat sinks; and / or, The third serpentine heat exchange tube includes a plurality of heat exchange tube sections that are bent, connected, and integrally formed. Insert-type heat sinks are provided on the surfaces of the heat exchange tube sections.

6. The serpentine tube type variable flow split heat exchanger according to claim 2, characterized in that: The distance between the second conductive component and the second serpentine tube outlet is the first distance, and the distance between the second conductive component and the third serpentine tube outlet is the second distance. The first distance is greater than or equal to the second distance.

7. The serpentine tube type variable flow split heat exchanger according to claim 6, characterized in that: A first discrete element is provided between the second conducting component and the second serpentine tube outlet. When the serpentine tube variable flow split heat exchanger is used as an evaporator, the refrigerant in the second header passes through the second conducting component and then flows into the second serpentine tube outlet through the first discrete element.

8. The serpentine tube type variable flow split heat exchanger according to any one of claims 1 to 7, characterized in that: The second heat exchange module further comprises: a second serpentine heat exchange tube group, comprising a fourth serpentine heat exchange tube, a fifth serpentine heat exchange tube and a sixth serpentine heat exchange tube; and The second flow path switching component is connected to the fourth serpentine heat exchange tube, the fifth serpentine heat exchange tube and the sixth serpentine heat exchange tube. Among them, when the serpentine tube type variable split heat exchanger is used as an evaporator, the second flow path switching component connects the fourth serpentine heat exchange tube, the fifth serpentine heat exchange tube and the sixth serpentine heat exchange tube in parallel; when the serpentine tube type variable split heat exchanger is used as a condenser, the second flow path switching component connects the fourth serpentine heat exchange tube, the fifth serpentine heat exchange tube and the sixth serpentine heat exchange tube in series.

9. The serpentine tube type variable flow split heat exchanger according to claim 8, characterized in that: The second heat exchange module is arranged below the first heat exchange module.

10. An air conditioning system, characterized in that: It comprises the serpentine tube type variable split flow heat exchanger according to any one of claims 1 to 9.

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