Heat dissipation device and heat source unit

Abstract

The present application discloses a heat dissipation device and a heat source unit. The heat dissipation device is part of a refrigerant circulation loop, the heat dissipation device comprises a first pipe and a heat dissipation assembly connected to the first pipe, the first pipe is a part of a pipe of the refrigerant circulation loop, the main component of the first pipe is steel, the heat dissipation assembly comprises a heat dissipation body and heat dissipation connecting pipes, the heat dissipation body is provided with a part of a flow path of the refrigerant circulation loop, the main component of the heat dissipation body is aluminum, and the heat dissipation body is in thermally conductive connection with a target cooling member; each heat dissipation connecting pipe comprises a first adapter portion and a second adapter portion, wherein a first end of the first adapter portion is connected to the heat dissipation body, and the main component of the first adapter portion is aluminum; the second adapter portion is arranged at a second end of the first adapter portion, and the main component of the second adapter portion is copper; and the first pipe is connected to the second adapter portion.

Description

Heat dissipation device and heat source unit

[0001] The present application claims priority to the Chinese patent application No. 2025100735769, filed on January 17, 2025, and entitled "Heat dissipation device and heat source unit", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of refrigerant transmission technology, in particular to a heat dissipation device and a heat source unit. BACKGROUND

[0003] Air conditioning equipment and other heating and ventilation equipment are equipped with heat exchange systems, and the core component of the system is a refrigerant circulation loop. The refrigerant circulation loop connects each part to ensure that the refrigerant can flow smoothly and efficiently throughout the system. This flow process is the key to realizing the refrigeration or heating function.

[0004] In related technologies, the pipe of the refrigerant circulation loop usually uses copper material which is widely used as the material. However, in actual application, the copper pipe may be affected by environmental factors such as temperature, humidity and mechanical stress under long-term use, resulting in changes in its performance, and even possible leakage and other problems, thereby affecting the normal operation of the entire heat exchange system. SUMMARY

[0005] The embodiments of the present application provide a heat dissipation device and a heat source unit, which can improve the stability of the pipe of the refrigerant circulation loop, while ensuring the stability of the connection between the heat dissipation device and the pipe of the refrigerant circulation loop.

[0006] The embodiments of the present application provide a heat dissipation device, which is part of a refrigerant circulation loop. The heat dissipation device includes a first pipe and a heat dissipation assembly connected to the first pipe. The first pipe is part of a pipe of the refrigerant circulation loop, and the main component of the first pipe is steel. The heat dissipation assembly includes:

[0007] a heat dissipation body having a part of a flow path of the refrigerant circulation loop, the main component of the heat dissipation body being aluminum, and the heat dissipation body being in thermal conduction with a target cooling member; and

[0008] a heat dissipation connector pipe, the heat dissipation connector pipe including:

[0009] a first adapter portion, a first end of the first adapter portion being connected to the heat dissipation body, and the main component of the first adapter portion being aluminum;

[0010] a second adapter portion, the second adapter portion being provided at a second end of the first adapter portion, and the main component of the second adapter portion being copper;

[0011] The first pipeline is connected to the second adapter.

[0012] The heat dissipation device proposed in this application constitutes part of the refrigerant circulation loop. This device mainly consists of a first pipe and heat dissipation components. The first pipe, as a crucial channel for refrigerant circulation, is primarily made of steel. This modification not only improves the structural strength and corrosion resistance of the pipe but also utilizes the excellent seismic resistance of steel to ensure stable system operation. Furthermore, steel's insulation properties are superior to copper pipes, effectively preventing unnecessary cooling of the refrigerant during transmission, thereby improving the overall efficiency of the system.

[0013] Furthermore, the heat dissipation component integrates a heat dissipation body and a heat dissipation connecting pipe. The heat dissipation body, serving as another flow channel for the refrigerant, is made primarily of aluminum, which, thanks to its excellent thermal conductivity, can quickly conduct and dissipate the heat generated by the heat-generating element. Simultaneously, the heat dissipation body and the target cooling component are connected through thermal conduction, further enhancing the heat dissipation effect. The design of the heat dissipation connecting pipe facilitates the transition and connection between materials. One end, the first adapter, is directly connected to the heat dissipation body; both are made of the same material, aluminum, ensuring good connection compatibility. The other end, the second adapter, is made of copper, a design that allows for a secure connection with the first pipe (steel), avoiding connection problems caused by material incompatibility. In summary, the heat dissipation device in this embodiment not only improves the stability of the refrigerant circulation loop but also ensures the stability of the connection between the heat dissipation device and the refrigerant circulation loop.

[0014] In some embodiments, the portion where the first pipeline connects to the second adapter is defined as the third adapter, and the main component of the third adapter is steel.

[0015] In some embodiments, the main component of the first pipeline is stainless steel, and the main component of the third adapter is stainless steel.

[0016] In some embodiments, the portion where the first conduit connects to the second adapter is defined as a third adapter, the main component of which is copper.

[0017] In some embodiments, the first pipeline includes a main pipe section whose main component is steel, and the third adapter section is a coating disposed on the inner or outer pipe surface of the first end of the main pipe section, the main component of which is copper.

[0018] In some embodiments, the first pipeline includes a main pipe section, the main pipe section being primarily composed of steel, and the third adapter section being a sleeve fitted onto the inner or outer pipe surface of the first end of the main pipe section. The end of the sleeve away from the main pipe section is fitted onto the inner or outer pipe surface of the second adapter section, and the main component of the sleeve is copper.

[0019] In some embodiments, a first end of the first pipe is connected to a second adapter, and a second end of the first pipe is connected to a heat source heat exchanger of the refrigerant circulation loop.

[0020] In some embodiments, the main pipe section includes a first pipe section, a transition pipe section, and a second pipe section connected in sequence, the coating covering the inner and / or outer pipe surfaces of the first pipe section, the transition pipe section, and the second pipe section, the first pipe section being closer to the second junction section than the second pipe section;

[0021] The inner diameter of the first pipe section is greater than or less than the inner diameter of the second pipe section, or the inner diameters of the first pipe section, the transition pipe section, and the second pipe section are the same.

[0022] In some embodiments, the main pipe section includes a first pipe section, a transition pipe section, and a second pipe section connected in sequence, wherein the first pipe section is closer to the second junction section than the second pipe section, and the sleeve is fitted onto the outer surface of the first pipe section.

[0023] The inner diameter of the first pipe section is greater than or less than the inner diameter of the second pipe section, or the inner diameters of the first pipe section, the transition pipe section, and the second pipe section are the same.

[0024] In some embodiments, the main pipe section includes a first pipe section, a transition pipe section, and a second pipe section connected in sequence, wherein the first pipe section is closer to the second junction section than the second pipe section, and the sleeve is nested inside the inner pipe surface of the first pipe section;

[0025] The inner diameter of the first pipe section is greater than or less than the inner diameter of the second pipe section, or the inner diameters of the first pipe section, the transition pipe section, and the second pipe section are the same.

[0026] In some embodiments, the sleeve includes a first sub-tube, a transition sub-tube, and a second sub-tube connected together, wherein the first sub-tube is farther away from the second transition portion than the second sub-tube;

[0027] The inner diameter of the first sub-tube is greater than or less than the inner diameter of the second sub-tube, or the inner diameters of the first sub-tube, the transition sub-tube, and the second sub-tube are the same.

[0028] In some embodiments, the target cooling element is a heating element in the refrigerant circulation loop or a heating electronic component of the electronic control unit.

[0029] In some embodiments, the heat dissipation body includes at least one plate tube, each of which includes at least one layer of microchannels.

[0030] In some embodiments, the heat dissipation body is configured as a plate tube, the plate tube including multiple microchannels;

[0031] The heat dissipation pipe includes:

[0032] A connecting part, which is constructed as a hollow, flat shape for the plate tube to be inserted, and the main component of the connecting part is aluminum;

[0033] The first adapter is configured as a cylindrical tube, and the first end of the first adapter is connected to the connecting part;

[0034] The second adapter is formed in the shape of a cylindrical tube, and the first adapter and the second adapter are coaxially arranged.

[0035] In some embodiments, the number of heat dissipation pipes is two, respectively connected to both ends of the heat dissipation body, and the two heat dissipation pipes include:

[0036] Two connecting parts, which are constructed as hollow flat parts, are respectively inserted into both ends of the plate tube;

[0037] The two first transition sections are respectively connected to the two connecting sections;

[0038] Two second adapters are provided, one of which is connected to the first pipeline and the other is connected to a steel liquid-side outlet pipe, which has a liquid-side outlet for the refrigerant circulation loop.

[0039] In some embodiments, the heat dissipation body is configured as a plurality of plate tubes, the plate surfaces of the plurality of plate tubes being located on the same plane and the plurality of plate tubes being arranged sequentially at intervals along a direction parallel to the plane;

[0040] The heat dissipation pipe section includes:

[0041] The manifold, whose main component is aluminum, has one end of each of the plate tubes inserted into the lumen of the manifold;

[0042] The first adapter is configured as a circular tube, and the first end of the first adapter is connected to the manifold.

[0043] The second adapter is formed in the shape of a cylindrical tube, and the first adapter and the second adapter are coaxially arranged.

[0044] In some embodiments, the number of heat dissipation pipes is two, respectively connected to both ends of the heat dissipation body, and the two heat dissipation pipes include:

[0045] Two manifolds, defined as the first manifold and the second manifold respectively, are located closer to the heat source heat exchanger of the refrigerant circulation loop than the second manifold. The first manifold and the second manifold are respectively used for inserting the two ends of the plurality of plate tubes.

[0046] The two first transition sections are respectively connected to the two connecting sections;

[0047] Two second adapters are provided, one of which is connected to the first pipeline and the other is connected to the liquid-side outlet pipe, which has the liquid-side outlet of the refrigerant circulation loop.

[0048] In some embodiments, the number of heat dissipation pipes is four, including a main pipe, a secondary pipe, and an auxiliary pipe. The main pipe and the auxiliary pipe are arranged side by side on the same side of the heat dissipation body, and the main pipe and the auxiliary pipe are arranged side by side on the opposite side of the heat dissipation body.

[0049] Each of the aforementioned plates and tubes includes at least a first plate and a second plate that are attached to each other. The microchannels of the first plate are respectively connected to the main pipeline and the main pipeline. The second transition part of the main pipeline is connected to the first pipeline. The second transition part of the main pipeline is connected to the liquid-side outlet pipe. The liquid-side outlet pipe has a liquid-side outlet of the refrigerant circulation loop.

[0050] The microchannels of the second plate are connected to the auxiliary pipeline and the auxiliary pipeline respectively. The second adapter of the auxiliary pipeline is connected to the liquid-side outlet pipe through an expansion valve. The second adapter of the auxiliary pipeline is connected to the compressor.

[0051] Secondly, embodiments of this application propose a heat source unit, including:

[0052] The outer casing forms the shape of the heat source unit;

[0053] A compressor that compresses refrigerant into a refrigerant circulation loop, the compressor having an exhaust port for discharging refrigerant and a return port for recovering refrigerant;

[0054] Heat dissipation assembly, the heat dissipation assembly comprising:

[0055] The heat dissipation body has a portion of the refrigerant circulation loop, the main component of the heat dissipation body is aluminum, and the heat dissipation body is thermally connected to the target cooling component.

[0056] A heat dissipation connector includes: a first adapter portion, the first end of which is connected to the heat dissipation body, the main component of which is aluminum; and a second adapter portion, which is disposed at the second end of which is made of copper.

[0057] A heat source heat exchanger has a near-compressor side and a far-compressor side, wherein the refrigerant between the near-compressor side and the far-compressor side exchanges heat with a heat source, the far-compressor side of the heat source heat exchanger is connected to a second transition section via a first steel pipe, and the near-compressor side of the heat source heat exchanger is connected to the exhaust port of the compressor via a second steel pipe.

[0058] In some embodiments, a flow path switching device is also included, the flow path switching device comprising:

[0059] The first interface is connected to the exhaust port of the compressor via an exhaust pipe;

[0060] The second interface is connected to the compressor side of the heat source heat exchanger via the second pipeline;

[0061] The third interface is connected to the gas-side outlet of the heat source unit via a gas-side outlet pipe; and

[0062] The fourth interface is connected to the return port of the compressor via a return pipe.

[0063] In some embodiments, the heat source unit includes:

[0064] Electrical control box;

[0065] The electronic control unit includes a circuit board and multiple electronic components disposed on the circuit board;

[0066] The board body is disposed inside the electrical control box to divide the internal space of the electrical control box into a first cavity 910 and a second cavity, and the circuit board and a plurality of the electronic components are disposed in the first cavity 910.

[0067] The heat dissipation body is disposed in the second cavity, the plate part includes a relief hole, a heat dissipation plate is disposed in the relief hole and the two plate surfaces are respectively thermally connected to the plurality of electronic components and the heat dissipation body;

[0068] The heat dissipation pipe extends from the second cavity out of the electrical control box, wherein the second adapter is located outside the electrical control box and is connected to the first pipe. Attached Figure Description

[0069] Figure 1 is a schematic diagram of the refrigerant circulation loop of an embodiment of the heat source unit of this application;

[0070] Figure 2 is a schematic diagram of the heat dissipation connector and the first pipeline of the heat dissipation device of this application;

[0071] Figure 3 is a schematic diagram of three embodiments of the inner pipe surface coating of the first pipeline of this application;

[0072] Figure 4 is a schematic diagram of three embodiments of the inner pipe surface coating and the outer pipe surface coating of the first pipeline of this application;

[0073] Figure 5 is a schematic diagram of three embodiments in which the sleeve of the first pipeline of this application is sleeved on the outer surface of the first pipe section;

[0074] Figure 6 is a schematic diagram of three embodiments in which the sleeve of the first pipeline of this application is sleeved on the outer surface of the first pipe section;

[0075] Figure 7 is a schematic diagram of three embodiments of the first pipeline sleeve being fitted onto the outer surface of the first pipe section in this application;

[0076] Figure 8 is a schematic diagram of three embodiments in which the sleeve of the first pipeline of this application is nested in the inner pipe surface of the first pipe segment;

[0077] Figure 9 is a schematic diagram of three embodiments in which the sleeve of the first pipeline of this application is nested in the inner pipe surface of the first pipe segment;

[0078] Figure 10 is a schematic diagram of three embodiments in which the sleeve of the first pipeline of this application is nested in the inner pipe surface of the first pipe segment;

[0079] Figure 11 is a schematic diagram of a structure of a heat dissipation component of the heat source unit of this application;

[0080] Figure 12 is a schematic diagram of the heat dissipation assembly of the heat source unit of this application from another perspective;

[0081] Figure 13 is a schematic diagram of another embodiment of the heat dissipation assembly of the heat source unit of this application;

[0082] Figure 14 is a partial structural schematic diagram of another embodiment of the heat dissipation assembly and electronic control unit of the heat source unit of this application;

[0083] Figure 15 is a schematic diagram of the assembly structure of the heat dissipation component and the electrical control box of another embodiment of the heat source unit of this application;

[0084] Figure 16 is a schematic diagram of the assembly structure of the heat dissipation component and the electrical control box of another embodiment of the heat source unit of this application from another perspective.

[0085] Figure 17 is a partial structural diagram of the heat dissipation components and the electronic control unit of the heat source unit of this application;

[0086] Figure 18 is a magnified view of a portion of point A in Figure 17;

[0087] Figure 19 is a partial structural schematic diagram of the electrical control box of the heat source unit of this application;

[0088] Figure 20 is a partial structural schematic diagram of the electrical control box of the heat source unit of this application from another perspective;

[0089] Figure 21 is a schematic diagram of the refrigerant circulation loop of another embodiment of the heat source unit of this application.

[0090] Explanation of reference numerals in the attached drawings: 1000, heat source unit; 2000, indoor unit; 2001, indoor heat exchanger; indoor fan; 2002; 100, heat dissipation assembly; 10, heat dissipation body; 11, plate tube (round tube); 11a, microchannel; 111, first plate; 112, second plate; 20, heat dissipation connecting pipe; 21, first adapter; 22, second adapter; 23, connecting part; 24, manifold; 241, first manifold; 242, second manifold; protective sleeve; 25; sealing block; 26; 20a, 20b, main connecting pipe; 20c, 20d, auxiliary connecting pipe; 200, First Pipeline; 201, Third Transfer Section; 2011, First Sub-pipeline; 2012, Transition Sub-pipeline; 2013, Second Sub-pipeline; 202, Main Pipeline; 2021, First Pipe Section; 2022, Transition Pipe Section; 2023, Second Pipe Section; 300, Outer Shell; 400, Compressor; 401, Exhaust Port; 402, Return Gas Port; 403, Injection Port; 400A, Heat Source Heat Exchanger; 400a, Near Compressor Side; 400b, Far Compressor Side; 400B, Outdoor Fan; 500A, Liquid-Side Shut-Off Valve; 600A, Gas-Side Shut-Off Valve; 500, Liquid Connection Pipe; 600, Gas Connection Pipe; 700, Branch Pipe; 700A, Exhaust Pipe; PL1, First Piping; PL2, Second Piping; PL3, Third Piping; 800, Flow path switching device; 801, First interface; 802, Second interface; 803, Third interface; 804, Fourth interface; 900, Electrical control box; 901, Box body; 902, Top cover; 903, Fixing part; 910, First cavity; 920, Second cavity; 930, Drive fan; 900A, Electrical control unit; 900a, Circuit board; 900b, Electronic components; 900B, Board body; 900c, Clearance hole; 900d, Ventilation hole; 900C, Mounting block; 900D, Gas-liquid separator; 900E, Filter; 900F, Return air pipe; 900G, Expansion valve; 900H, Heat sink.

[0091] 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

[0092] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0093] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0094] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0095] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0096] Air conditioners and other HVAC equipment have built-in heat exchange systems, which include refrigerant circulation loops that are interconnected to ensure that the refrigerant can flow smoothly throughout the system, thereby completing the cooling or heating process.

[0097] Air conditioners and other HVAC equipment are equipped with heat exchange systems, the core of which is the refrigerant circulation loop. This loop connects all components, ensuring smooth and efficient refrigerant flow throughout the system. This circulation process is crucial for achieving cooling or heating functions.

[0098] In related technologies, copper is commonly used as the material for refrigerant circulation loop piping. However, in practical applications, copper pipes may be affected by environmental factors such as temperature, humidity, and mechanical stress from long-term use, leading to changes in their performance and even potential leaks, thus affecting the normal operation of the entire heat exchange system.

[0099] To solve the above problems, please refer to Figures 1 and 2. The first aspect of this application proposes a heat dissipation device as part of a refrigerant circulation loop. The heat dissipation device includes a first pipe 200 and a heat dissipation component 100 connected to the first pipe 200. The first pipe 200 is a pipe part of the refrigerant circulation loop, and its main component is steel. Thus, the first pipe 200 is made entirely of steel, or the proportion of steel material is large, and it is the main part constituting the first pipe 200.

[0100] The heat dissipation assembly 100 includes a heat dissipation body 10 and a heat dissipation pipe 20. The heat dissipation body 10 also undertakes part of the refrigerant circulation path, and its main material is aluminum to take advantage of its excellent thermal conductivity. The heat dissipation body 10 is connected to the target cooling component by thermal conduction to ensure efficient heat transfer.

[0101] The target cooling component is either a heat-generating element in the refrigerant circulation loop or an electronic component 900b of the electronic control unit 900A. In the refrigerant circulation loop, heat-generating elements typically refer to components that generate heat during operation. Due to their operating characteristics, these components consume electrical energy and convert it into heat energy, thus becoming a heat source in the system, such as the compressor in an air conditioner. Furthermore, the electronic component 900b of the electronic control unit 900A also generates heat after prolonged use. The heat dissipation body 10 thus cools the target cooling component.

[0102] The heat dissipation pipe 20 includes a first adapter 21 and a second adapter 22. The first end of the first adapter 21 is connected to the heat dissipation body 10. The main component of the first adapter 21 is aluminum, thus facilitating connection with the heat dissipation body 10 due to the similar material. The second adapter 22 is located at the second end of the first adapter 21, and its main component is copper. Notably, the first adapter 21 and the second adapter 22 are connected by resistance welding. Resistance welding utilizes the resistance heat generated by the current passing through the workpiece and the contact surface to heat the workpiece to a molten or plastic state, and then applies pressure to achieve atomic bonding. This method ensures a strong and reliable connection between the first adapter 21 and the second adapter 22, while avoiding welding difficulties caused by material differences. The first conduit 200 is connected to the second adapter 22. Furthermore, a protective sleeve 25 is provided at the connection between the first and second connecting parts. The protective sleeve 25 can be formed of heat-shrinkable material. By utilizing the heat-shrinkable material's shrinkage characteristics when heated, the protective sleeve 25 can better fit at the connection between the first and second connecting parts, thereby preventing external corrosion.

[0103] In some structural configurations, the first end of the first pipe 200 is connected to the second adapter 22 of the heat dissipation pipe 20, and the second end of the first pipe 200 is connected to the heat source heat exchanger 400A of the refrigerant circulation loop. It is understood that, referring to Figure 1, in heat exchange systems such as air conditioners, the heat source heat exchanger 400A can serve as the condenser in cooling mode and the evaporator in heating mode for the outdoor unit. When the system operates in cooling mode, the heat source heat exchanger 400A acts as a condenser, its main function being to cool and liquefy the high-temperature, high-pressure refrigerant gas discharged from the compressor, while simultaneously releasing a large amount of heat to the external environment. During this process, the refrigerant exhibits a medium-pressure, medium-temperature state. Subsequently, this medium-pressure, medium-temperature refrigerant flows along the direction of the first pipe 200 and smoothly enters the second transition section 22, thereby entering the heat dissipation body 10 to cool the target cooling component. After that, the refrigerant flows out from another heat dissipation pipe 20 of the heat dissipation body and enters the piping of the refrigerant circulation loop. This piping can be set in another first pipe 200, and the first end of the other first pipe 200 is connected to the second transition section 22 of the other heat dissipation pipe 20.

[0104] The heat dissipation device proposed in this embodiment constitutes part of the refrigerant circulation loop. This device mainly consists of a first pipe 200 and a heat dissipation component 100. The steel first pipe 200, due to its strength, can resist the impact of external forces caused by vibration, preventing deformation, cracking, or other damage caused by vibration. The heat dissipation component 100 is connected in series in the refrigerant circulation loop. Through the steel first pipe 200, the heat dissipation component 100 effectively reduces the vibration impact of the refrigerant circulation loop. From the perspective of improving thermal insulation performance, steel has a lower heat transfer coefficient than copper. In the refrigerant circulation loop, the refrigerant flows within the steel first pipe 200, and heat is exchanged with the external environment through the pipe wall. Because steel has a low heat transfer coefficient, the rate of heat transfer through the steel pipe wall is slower, which effectively reduces heat loss from the refrigerant circulation loop to the external environment, increasing thermal insulation.

[0105] Furthermore, the heat dissipation assembly 100 integrates a heat dissipation body 10 and a heat dissipation pipe 20. The heat dissipation body 10, serving as another flow channel for the refrigerant, is made primarily of aluminum, which, thanks to its excellent thermal conductivity, can quickly conduct and dissipate the heat generated by the heat-generating element. Simultaneously, the heat dissipation body 10 achieves a thermal conduction connection with the target cooling component, further enhancing the heat dissipation effect. The design of the heat dissipation pipe 20 facilitates the transition and connection between materials. One end, the first adapter 21, is directly connected to the heat dissipation body 10; both are made of the same material, aluminum, ensuring good connection compatibility. The other end, the second adapter 22, is made of copper, a design that allows for a secure connection with the first pipe 200 (steel), avoiding connection problems caused by material incompatibility. In summary, the heat dissipation device in this embodiment not only improves the stability of the refrigerant circulation loop but also ensures the connection stability between the heat dissipation device and the refrigerant circulation loop.

[0106] Referring to Figure 2, in one embodiment of this application, the portion connecting the first pipe 200 and the second adapter 22 is defined as the third adapter 201. The main component of the third adapter 201 is steel, thus ensuring that the material of the connecting portion 23 is consistent with that of the first pipe 200, thereby improving the reliability and stability of the connection. Since the main component of the first pipe 200 is steel, and the third adapter 201 is also made of steel, problems such as insufficient connection strength or welding difficulties caused by material differences can be effectively avoided. In the example shown in Figure 2, the third adapter and the main pipe of the first pipe are separately arranged and fixed together by welding. In another structural form, the third adapter and the main pipe of the first pipe are integrally formed, that is, the first pipe is formed as a steel pipe, and one end of the stainless steel pipe of the first pipe is connected to the second adapter. The solder between the first adapter, primarily composed of aluminum, and the second adapter, primarily composed of copper, has a first melting point. The solder between the second adapter, primarily composed of copper, and the third adapter, primarily composed of steel, has a second melting point, which is greater than the first melting point. Understandably, the third adapter is first welded to the second adapter, and then the second adapter is fixed to the first adapter. When the heat dissipation component or the first conduit needs to be replaced, the solder between the second and first adapters is melted at a high temperature, thus releasing the fixed relationship between the first and second adapters. This allows for replacement without affecting the welded connection between the second and third adapters.

[0107] Furthermore, the main steel component of the first pipe 200 is stainless steel, and the main steel component of the third transition part 201 is also stainless steel. Since both the first pipe 200 and the third transition part 201 are made of stainless steel, the connection between them becomes tighter and more stable. Stainless steel has excellent weldability, ensuring that the connection part 23 maintains good sealing and strength even when subjected to high pressure and high temperature refrigerant flow. At the same time, stainless steel pipes have lower material costs, which helps to reduce overall costs, and also effectively prevents pipe rusting, improving pipe reliability. Of course, the first pipe 200 can also be made of carbon steel; this embodiment does not specifically limit this.

[0108] In another embodiment of this application, the portion connecting the first pipe 200 and the second adapter 22 is defined as the third adapter 201, the main component of which is copper. Due to the good ductility and plasticity of copper, the third adapter 201 can be flexibly adapted to various complex connection requirements during design and manufacturing. Through precise processing and forming, the connection between the third adapter 201 and the first pipe 200 and the second adapter 22 can be ensured to be both tight and reliable, thereby avoiding the risk of refrigerant leakage and connection failure. Furthermore, copper also has a certain degree of corrosion resistance, which can resist the corrosive effects that may be caused by refrigerant and the external environment to a certain extent.

[0109] Referring to Figure 3, in one connection method of the first pipe 200 and the second adapter 22, the first pipe 200 includes a main pipe 202, the main pipe 202 being primarily composed of steel. The third adapter 201 is a plating layer disposed on the inner or outer pipe surface of the first end of the main pipe 202, the main component of which is copper. Since the heat dissipation device needs to withstand the circulating pressure and temperature fluctuations of the refrigerant during operation, if the connection 23 is unstable, it can easily lead to refrigerant leakage or connection failure, thereby affecting the normal operation of the entire system. The copper plating layer, due to its good ductility and strong adhesion to the substrate (such as steel), has excellent adhesion and durability, and is not easily peeled off during long-term use. This ensures the firmness of the connection between the main pipe 202 and the second adapter 22, effectively resisting the influence of these external factors and maintaining the stability and reliability of the connection.

[0110] Furthermore, the main pipe section 202 includes a first pipe section 2021, a transition pipe section 2022, and a second pipe section 2023 connected in sequence. The coating can cover only the inner or outer surfaces of the three pipe sections, thus saving coating material and reducing costs. Alternatively, the coating can cover both the inner and outer surfaces of the three pipe sections simultaneously, as shown in Figure 4, to achieve connection flexibility. The first pipe section 2021 is closer to the second transition section 22 than the second pipe section 2023. The inner diameter of the first pipe section 2021 may be larger or smaller than the inner diameter of the second pipe section 2023, or the inner diameters of the first pipe section 2021, transition pipe section 2022, and second pipe section 2023 may be the same, depending on the specific application scenario and requirements. This design allows the main pipe section 202 to adapt to different flow and pressure requirements, improving the adaptability and flexibility of the heat dissipation device. Specifically, when the inner diameter of the first pipe section 2021 is greater than or less than the inner diameter of the second pipe section 2023, the flow resistance of the fluid in the main pipe section 202 can be changed to ensure that the refrigerant can be stably delivered to the heat dissipation area.

[0111] Referring to Figures 5 to 7, in another connection method between the first pipe 200 and the second adapter 22, the first pipe 200 includes a main pipe 202, the main pipe 202 being primarily composed of steel. The third adapter 201 is a sleeve fitted onto the inner or outer pipe surface of the first end of the main pipe 202. The end of the sleeve away from the main pipe 202 is fitted onto the inner or outer pipe surface of the second adapter 22, and the main component of the sleeve is copper. This sleeve-shaped third adapter 201 also exhibits flexibility in design and installation. It can be customized according to the size and shape of the main pipe 202 to ensure a perfect match, while also facilitating subsequent maintenance and replacement. This design not only meets the requirements of connection stability and heat dissipation performance but also takes into account cost-effectiveness and operability, providing an efficient and reliable solution for the connection between the first pipe 200 and the second adapter 22.

[0112] In the embodiment where the sleeve is fitted onto the outer surface of the first pipe section 2021, the main pipe section 202 includes a first pipe section 2021, a transition pipe section 2022, and a second pipe section 2023 connected in sequence. The first pipe section 2021 is closer to the second transition section 22 than the second pipe section 2023, and the sleeve is fitted onto the outer surface of the first pipe section 2021. The inner diameter of the first pipe section 2021 is greater than or less than the inner diameter of the second pipe section 2023, or the inner diameters of the first pipe section 2021, the transition pipe section 2022, and the second pipe section 2023 are the same.

[0113] When the inner diameter of the first pipe section 2021 is larger than that of the second pipe section 2023, the fluid encounters less flow resistance when flowing through the first pipe section 2021, which is beneficial for the smooth delivery of refrigerant or other media. Conversely, when the inner diameter of the first pipe section 2021 is smaller than that of the second pipe section 2023, the fluid pressure can be increased, ensuring that the medium maintains a stable flow state even in complex environments. When the inner diameters of all three are the same, the most direct fluid channel is provided, simplifying fluid management. At the same time, the sleeve and the first pipe section 2021 can be tightly welded together to ensure the connection's strength and sealing, effectively preventing leakage of refrigerant or other media and improving the system's safety and reliability.

[0114] Furthermore, the conduit includes a first sub-pipe 2011, a transition sub-pipe 2012, and a second sub-pipe 2013 connected together, with the first sub-pipe 2011 being farther away from the second transition section 22 than the second sub-pipe 2013. The inner diameter of the first sub-pipe 2011 is greater than or less than the inner diameter of the second sub-pipe 2013, or the inner diameters of the first sub-pipe 2011, transition sub-pipe 2012, and second sub-pipe 2013 are the same. When the inner diameter of the first sub-pipe 2011 is greater than that of the second sub-pipe 2013, the fluid encounters less flow resistance when flowing through the first sub-pipe 2011, which is beneficial for the smooth delivery of refrigerant or other media; conversely, when the inner diameter of the first sub-pipe 2011 is less than that of the second sub-pipe 2013, the fluid pressure can be increased to ensure that the medium can maintain a stable flow state in complex environments. When the inner diameters of the three are the same, the most direct fluid channel is provided, simplifying fluid management. Furthermore, the transition sub-tube 2012, which serves as a bridge connecting the first sub-tube 2011 and the second sub-tube 2013, has also been carefully designed and manufactured. The transition sub-tube 2012 not only ensures a smooth transition between the sub-tubes, but also further reduces energy loss during fluid flow by optimizing its shape and size, thereby improving overall fluid efficiency.

[0115] Referring to Figures 8 to 10, in the embodiment where the sleeve is nested within the inner surface of the first pipe segment 2021, the main pipe section 202 includes a first pipe segment 2021, a transition pipe segment 2022, and a second pipe segment 2023 connected in sequence. The first pipe segment 2021 is closer to the second transition section 22 than the second pipe segment 2023, and the sleeve is nested within the inner surface of the first pipe segment 2021. The inner diameter of the first pipe segment 2021 is greater than or less than the inner diameter of the second pipe segment 2023, or the inner diameters of the first pipe segment 2021, the transition pipe segment 2022, and the second pipe segment 2023 are the same. Similar to the embodiment where the sleeve is fitted onto the outer pipe surface, the inner diameter of the first pipe segment 2021 can be greater than, less than, or equal to the inner diameter of the second pipe segment 2023. This design flexibility ensures that the main pipe section 202 can adapt to the needs of different application scenarios. When the inner diameter of the first pipe section 2021 is larger than that of the second pipe section 2023, the fluid encounters less flow resistance when flowing through the first pipe section 2021, which is beneficial for the smooth delivery of refrigerant or other media. Conversely, when the inner diameter of the first pipe section 2021 is smaller than that of the second pipe section 2023, the fluid pressure can be increased to ensure that the medium maintains a stable flow state in complex environments. When the inner diameters of all three sections are the same, the most direct fluid channel is provided, simplifying fluid management.

[0116] Similarly, in this embodiment, the sleeve is also designed to include a first sub-pipe 2011, a transition sub-pipe 2012, and a second sub-pipe 2013 connected together, wherein the first sub-pipe 2011 is further away from the second transition section 22 than the second sub-pipe 2013. This design not only enhances the adaptability and flexibility of the sleeve but also further optimizes fluid management by adjusting the inner diameter of the sub-pipes. The transition sub-pipe 2012, acting as a bridge connecting the first sub-pipe 2011 and the second sub-pipe 2013, ensures a smooth transition between the sub-pipes and reduces energy loss of the fluid during flow.

[0117] Referring to Figures 11, 12, 13, and 14, in some structural forms, the heat dissipation body 10 includes at least one aluminum plate tube 11, with both ends of each plate tube 11 connected to heat dissipation pipes 20 for refrigerant to flow in and out. Each plate tube 11 is transversely cut along its pipe extension direction, and its cross-section includes at least one layer of microchannels 11a. Each layer of microchannels 11a has multiple microchannels 11a arranged along the width of the plate. This design allows the refrigerant to be divided into multiple flow channels, thereby increasing the heat dissipation area and heat exchange efficiency, and improving heat dissipation efficiency. The use of microchannels 11a also promotes heat exchange between the refrigerant and the heat dissipation body 10, allowing heat to be carried away more quickly and ensuring the efficient and stable operation of the system. In other structural forms, the heat dissipation body includes at least one aluminum circular tube, with both ends of each circular tube 11 connected to heat dissipation pipes 20 for refrigerant to flow in and out.

[0118] Further, referring to Figures 1, 11, and 12, the heat dissipation body 10 has an aluminum plate tube 11, and two heat dissipation pipes 20 are provided. Each end of the plate tube 11 is connected to a heat dissipation pipe 20. The plate tube 11 includes multiple microchannels 11a. This design not only significantly increases the heat dissipation area but also achieves more efficient heat exchange between the refrigerant and the heat dissipation body 10 through the precise layout of the microchannels 11a. The heat dissipation pipe 20 includes a connecting portion 23, which is constructed as a hollow, flat shape for the plate tube 11 to be inserted into. The main component of the connecting portion 23 is aluminum. This shape perfectly matches the shape of the plate tube 11, allowing the plate tube 11 to be easily inserted and securely connected. It is worth noting that the main material of the connecting portion 23 is aluminum, which not only has good thermal conductivity but also lightweight properties, further improving the overall performance of the heat dissipation pipe 20. Furthermore, the first adapter 21 is designed as a cylindrical tube, with its first end connected to the connecting part 23 of the heat dissipation pipe 20, ensuring smooth flow of refrigerant between the two. In some structural configurations, the connecting part 23 and the first adapter 21 are integrally formed from the same aluminum tube. The second adapter 22 also adopts a cylindrical tube design and is coaxially arranged with the first adapter 21. This layout not only simplifies the system structure but also improves the system's stability and reliability.

[0119] Furthermore, in some embodiments, the structure differs from that in Figures 11 and 12 in that the heat dissipation channel of the heat dissipation body 10 is formed by an aluminum circular tube 11. Both ends of the circular tube 11 are connected to heat dissipation connecting pipes 20. The heat dissipation connecting pipe 20 includes a connecting portion 23, which is sleeved onto the end of the circular tube 11. The connecting portion 23 is configured in a circular tube shape to fit the size of the end of the circular tube 11; that is, the connecting portion 23 can be sleeved on the outer circumferential surface of the end of the circular tube 11, or it can be sleeved on the inner circumferential surface of the end of the circular tube 11. The first transition portion 21 is designed in a circular tube shape, with one end connected to the connecting portion 23 of the heat dissipation connecting pipe 20, ensuring smooth flow of the refrigerant between the two. In some structural forms, the connecting portion 23 and the first connecting portion 21 are integrally formed from the same aluminum tube. The second adapter 22 also adopts a cylindrical design and is coaxially arranged with the first adapter 21. The second adapter 22 is made of copper and is fixed together with the first adapter 11 by welding.

[0120] Furthermore, referring to Figures 11 and 12, in some embodiments, the heat dissipation assembly 100 further includes a heat sink 900H made of aluminum. The heat sink 900H is thermally connected to the plate tube 11 or the round tube 11, which serves as a heat dissipation channel. Specifically, one side of the heat sink 900H is thermally connected to the plate tube 11 or the round tube 11, and the other side of the heat sink 900H is configured as a plane, which is thermally connected to the target cooling element (the target cooling element in Figure 12 is the heat-generating electronic component 900b). Specifically, one side of the heat sink 900H is welded and fixed to the plate tube 11 or the round tube 11; or, one side of the heat sink 900H is provided with an embedding groove, and the plate tube 11 or the round tube 11 is embedded and fixed in the embedding groove. The other side of the heat sink 900H can be in direct thermal contact with the target cooling component 900b or in contact with it by thermally conductive adhesive, or it can be indirectly connected to the target cooling component 900b by another aluminum heat sink 900H; or, the heat sink 900H and the heat sink body 10 are integrally cast, and the plate tube 11 (round tube 11) of the heat sink body 10 is embedded in the heat sink 900H. The surface of the heat sink 900H is in direct thermal contact with the target cooling component 900b or in contact with it by thermally conductive adhesive, or it can be indirectly connected to the target cooling component 900b by another aluminum heat sink 900H.

[0121] Referring to Figures 13 and 14, in some embodiments, the heat dissipation body 10 is configured to include a structure comprising multiple plate tubes 11, the surfaces of which are all located on the same plane and are spaced apart sequentially along the width of the plate. This layout not only makes full use of space but also increases the heat dissipation area, thereby improving heat dissipation efficiency. The heat dissipation pipe 20 includes a manifold 24, whose main component is aluminum, which has good thermal conductivity. One end of each plate tube 11 is inserted into the cavity of a manifold 24. This connection method is not only stable but also ensures smooth flow of refrigerant between the plate tubes 11 and the manifold 24. The design of the manifold 24 allows the multiple plate tubes 11 to be distributed and collected as a whole, improving the system integration and operating efficiency. In addition, the first transition part 21 is constructed as a circular tube and connected to the manifold 24. This design ensures that the refrigerant can flow smoothly from the manifold 24 into the first transition part 21 and then to other parts of the system. In some structural designs, the gas collection pipe 24 and the first transition part 21 are integrally formed from aluminum tubes. The second adapter 22 also adopts a cylindrical design and is coaxially arranged with the first adapter 21. This layout not only simplifies the system structure but also improves the system's stability and reliability. In summary, by constructing the heat dissipation body 10 as a structure of multiple plate tubes 11, introducing the manifold 24 component, and rationally arranging the first adapter 21 and the second adapter 22, this design scheme demonstrates significant beneficial effects in improving heat dissipation efficiency and enhancing system stability and reliability. At the same time, this design also facilitates system installation and maintenance, reducing operating costs.

[0122] Referring to Figures 13 and 14, there are two heat dissipation connectors 20, which are respectively connected to both ends of the heat dissipation body 10, providing stable support and connection for the heat dissipation body 10 and ensuring the effective operation of the heat dissipation body 10 in the refrigerant circulation loop. The two heat dissipation connectors 20 include two manifolds 24, namely a first manifold 241 and a second manifold 242. The two ends of multiple plate tubes 11 can be inserted into these two manifolds 24 respectively. A first adapter 21 connects a first manifold 241 and a second adapter 22. The two ends of multiple microchannels 11a of each plate tube are connected to the first manifold 241 and the second manifold 242 respectively. The first manifold 241 is connected via a first adapter 21 and a second adapter 22. The second manifold 242 is connected via another first adapter 21 and another second adapter 22. Cooling refrigerant enters the first manifold 241 from one second adapter 22. The cooling refrigerant then flows from the first manifold 241 to multiple microchannels 11a of multiple tubes 11. The refrigerant from the multiple tubes 11 converges into the second manifold 242 and flows out of the heat dissipation assembly 100 from another second adapter 22. Of course, the refrigerant can also flow from the second manifold 242 to the first manifold 241. Through the arrangement of the first manifold 241 and the second manifold 242, the multiple tubes 11 form an integrated heat dissipation structure, improving the heat dissipation area and efficiency. The two first adapters 21 of the two heat dissipation connectors 20 are connected to the two manifolds 24 respectively, ensuring that the refrigerant can flow smoothly between the heat dissipation body 10 and other parts of the system. Meanwhile, the two second adapters 22 also connect the heat dissipation unit 10 to the refrigerant piping. One of the second adapters 22 connects to the first pipe 200, or the other second adapter 22 connects to the first pipe 200, or both second adapters 22 connect to the steel first pipe. Steel has high strength, and in the working environment of the entire heat dissipation device and refrigerant circulation loop, it is inevitably subject to vibrations from the outside, such as vibrations generated during equipment operation and vibrations during transportation. The steel first pipe 200, with its strength, can resist the impact of external forces caused by vibration, preventing deformation, cracking, or other damage to the pipe due to vibration. Furthermore, since the heat dissipation component is connected in series in the refrigerant circulation loop, the steel first pipe 200 effectively reduces the vibration impact of the refrigerant circulation loop. From the perspective of improving thermal insulation performance, the heat transfer coefficient of steel is relatively lower than that of copper. In the refrigerant circulation loop, the refrigerant flows within the steel first pipe 200, and heat is exchanged with the external environment through the pipe wall. Because steel has a low heat transfer coefficient, heat is transferred slowly through the steel pipe walls, which effectively reduces the heat loss from the refrigerant circulation loop to the external environment and increases insulation performance.In summary, by setting up two heat dissipation pipes 20 and rationally arranging the first manifold 241 and the second manifold 242, the first adapter 21 and the second adapter 22, this design not only improves heat dissipation efficiency but also enhances the stability and reliability of the system. At the same time, this design simplifies the system structure, reduces the difficulty of installation and maintenance, and improves the overall performance of the system.

[0123] Referring to Figures 13 and 14, in some embodiments, the heat dissipation assembly 100 further includes a heat sink 900H made of aluminum. The heat sink 900H is thermally connected to a plurality of plate tubes 11 that serve as heat dissipation channels. Specifically, one side of the heat sink 900H is thermally connected to the surface of the plurality of plate tubes 11, and the other side of the heat sink 900H is configured as a plane, which is thermally connected to the target cooling element (the target cooling element in Figure 14 is the heat-generating electronic component 900b). Specifically, one side of the heat sink 900H is welded and fixed to the plurality of plate tubes 11, or one side of the heat sink 900H is provided with an embedding groove, in which the plurality of plate tubes 11 are embedded and fixed. The other side of the heat sink 900H can be in direct thermal contact with the target cooling element 900b, or it can be indirectly thermally connected to the target cooling element 900b through another aluminum heat sink 900H.

[0124] Referring to Figures 15 to 18 and Figure 21, in some embodiments, the heat dissipation assembly 100 is configured as a subcooler in the refrigerant circulation loop. The main path of the subcooler is connected in series with the main path of the refrigerant circulation loop, and the auxiliary path of the subcooler is connected in series with the auxiliary path of the refrigerant circulation loop. The main path of the refrigerant circulation loop is defined as the refrigerant flow path circulating between the heat source heat exchanger 400A, the indoor heat exchanger 2001, and the compressor 400. The refrigerant on the main path of the refrigerant circulation loop is defined as the main refrigerant flow. The auxiliary path of the refrigerant circulation loop is a branch pipe 700 branching from the main path of the refrigerant circulation loop. The starting point A of the branch pipe 700 is located on the main path of the refrigerant circulation loop, and the ending point N of the branch pipe 700 leads to the return pipe 900F of the compressor 400 or the injection port 403 of the compressor 400. The refrigerant on the auxiliary path is defined as the auxiliary refrigerant flow. After being diverted from the main refrigerant flow, the auxiliary refrigerant flow passes through the expansion valve 900G for pressure reduction and enters the auxiliary path of the subcooler to subcool the main refrigerant flow in the main path of the subcooler.

[0125] The heat dissipation assembly 100 includes a heat dissipation body 10 and heat dissipation pipes 20. There are four heat dissipation pipes 20, which are defined as main pipe 20a, main pipe 20b, auxiliary pipe 20c, and auxiliary pipe 20d. A pair of heat dissipation pipes (20a and 20b) is defined as main pipe (20a and 20b), and a pair of heat dissipation pipes (20c and 20d) is defined as auxiliary pipe (20c and 20d).

[0126] Referring to Figures 17 and 18, the heat dissipation body 10 includes multiple plates 11. Each plate 11 includes at least one first plate 111 and at least one second plate 112 attached to each other. The two ends of the microchannels 11a of the first plate 111 are respectively connected to a pair of main pipes (20a, 20b). The main refrigerant flows into the multiple microchannels 11a of the first plate through the main pipe 20a, and after passing through the multiple microchannels of the first plate 111, it flows out through the main pipe 20b. At the same time, the two ends of the microchannels of the second plate 112 are respectively connected to a pair of auxiliary pipes (20c / 20d). The pair of auxiliary pipes (20c / 20d) are connected in series on the auxiliary path of the refrigerant circulation loop. In this auxiliary path, an expansion valve 900G is provided upstream of the auxiliary path of the subcooler. The auxiliary refrigerant flow is depressurized and cooled by the adjustment of the expansion valve 900G. After the auxiliary refrigerant flow enters the microchannel of the second plate 112 from the auxiliary pipe 20c, it absorbs the heat of the main refrigerant flow in the microchannel of the first plate 111, thereby subcooling the main refrigerant flow of the first plate 111 and improving the cooling capacity of the main refrigerant flow in the main path. Then, the auxiliary refrigerant flow flows out from the auxiliary pipe 20d.

[0127] Referring to Figures 17 and 18, the two ends of the first plate 111 pass through a pair of auxiliary pipes (20c / 20d) and are connected to a pair of main pipes (20a, 20b). Two second plates 112 are respectively attached to the two surfaces of the first plate 111, with the two ends of each second plate 112 inserted into and connected to auxiliary pipes 20c and 20d. The main pipes 20a, 20b, 20c, and 20d, and the first plate 111 are located on the same plane, reducing the width of the heat dissipation assembly and facilitating miniaturization. In other embodiments, the second plate 112 may also be attached to only one surface of the first plate 111.

[0128] The first pipe 200 is a refrigerant pipe connected in series in the main path of the refrigerant circulation loop, and / or, the first pipe 200 is a refrigerant pipe connected in series in the auxiliary path of the refrigerant circulation loop.

[0129] Referring to Figure 17, multiple target components to be cooled (electronic components 900b) are in thermally conductive contact with the surface of the second plate 112. This contact can be direct or indirect, via a heat sink 900H. The auxiliary cooling medium flow of the second plate 112 absorbs heat not only from the main cooling medium flow within the first plate 11 but also from the target components to be cooled (electronic components 900b), simultaneously cooling both the main cooling medium flow and the target components to be cooled (electronic components 900b). Alternatively, in embodiments where the second plate 112 may only be attached to one surface of the first plate 111, the surface of the first plate 111 can also be in thermally conductive contact with the target components to be cooled (electronic components 900b), with the main cooling medium flow absorbing heat from the target components to be cooled (electronic components 900b).

[0130] In summary, by increasing the number of heat dissipation pipes 20, optimizing the layout, introducing expansion valves 900G, and designing specific refrigerant flow paths, combined with the heat conduction and heat dissipation method of the target cooling component through microchannels 11a on the first plate 111, this solution not only significantly improves heat dissipation efficiency but also enhances the air conditioning system through jet enthalpy enhancement technology. This design satisfies heat dissipation requirements while optimizing the overall performance of the air conditioning system.

[0131] Please refer to Figures 15 and 16. This application also proposes an electronic control device, which includes an electronic control unit 900A and a board body 900B. The electronic control unit 900A includes a circuit board 900a and a plurality of electronic components 900b disposed on the circuit board. The circuit board 900a is mounted on the board body 900B. The heat dissipation body 10 in the heat dissipation assembly 100 of the aforementioned embodiment has thermal contact with the plurality of electronic components 900b.

[0132] In some embodiments, the electronic control device is fixed inside the heat source unit 1000 via the plate portion 900B, at which time the electronic control unit 900A is exposed in the space inside the heat source unit 1000. When a maintenance personnel removes the maintenance panel of the heat source unit 1000 housing, the electronic control unit 900A is exposed in the maintenance opening of the heat source unit 1000 housing. The direction facing the maintenance port is defined as the positive direction, and the direction away from the maintenance port is defined as the negative direction. In one embodiment, the circuit board 900a is mounted on the front side of the board body 900B, multiple electronic components 900b are mounted on the front side of the circuit board, and the heat dissipation assembly 100 is mounted on the front side of the electronic components 900b, thereby facilitating the assembly and disassembly of the heat dissipation assembly 100 by maintenance personnel. Further, the heat dissipation assembly 100 includes a heat dissipation body 10 and a heat dissipation plate 900H. The heat dissipation plate 900H is fixed to the multiple electronic components 900b, and both are fixed to the circuit board 900a. When the maintenance personnel disassemble the electronic control unit 900A, they disconnect the connection between the heat dissipation plate 900H and the heat dissipation body 10, thereby removing the electronic control unit 900A from the maintenance port for maintenance and repair. In one embodiment, the heat from electronic component 900b is transferred to the heat dissipation body 10 via heat sink 900H. The refrigerant in the refrigerant circulation loop absorbs heat from the heat sink 900H, thereby cooling multiple electronic components 900b. In another embodiment, circuit board 900a is mounted on the front side of board body 900B, and heat dissipation assembly is mounted on the back side of board body 900B. Board body 900B has a clearance hole 900c (refer to the clearance hole 900c in board body 900B in Figure 15). Multiple electronic components 900b are mounted on the back side of circuit board 900a facing the clearance hole 900c. The heat dissipation assembly 100 includes heat sink 900H and heat dissipation body 10. Heat sink 900H passes through clearance hole 900c and contacts multiple electronic components 900b to be cooled. The heat from electronic component 900b is transferred to the heat dissipation body 10 via heat sink 900H, and the refrigerant in the refrigerant circulation loop carries away the heat, thereby cooling multiple electronic components 900b.

[0133] Referring to Figures 15 and 16, in some embodiments, the electronic control device further includes an electronic control housing 900, with an electronic control unit 900A fixed inside the electronic control housing 900. At least a portion of the second connecting pipe 22 extends outside the electronic control housing 900 and is welded to the first conduit 200. The electronic control housing 900 can be a sealed housing or a non-sealed housing.

[0134] Referring to the refrigerant circulation loops in Figures 1 and 21, this application also proposes a heat source unit 1000 including a heat dissipation assembly 100. The heat source unit 1000, as part of the refrigerant circulation loop, provides a heat source to the indoor unit 2000. An indoor fan 2002 drives indoor ambient air to exchange heat with an indoor heat exchanger 2001, thereby regulating the indoor temperature. The refrigerant circulation loop includes an outdoor unit 1000 and an indoor unit 2000 connected by a liquid connection pipe 500 and a gas connection pipe 600. The following description uses the heat source unit 1000 as an example. The heat source unit 1000 includes a housing 300, a compressor 400, a heat source heat exchanger 400A, an outdoor electronic expansion valve 900G, a heat dissipation assembly 100, a gas-liquid separator 900D, a liquid-side shut-off valve 500A, a gas-side shut-off valve 600A, a refrigerant piping assembly connecting the aforementioned components in series, and an electronic control device. The heat dissipation assembly 100 of the heat source unit 1000 is used to dissipate heat from the electronic control device. The liquid-side shut-off valve 500A serves as the external interface of the heat source unit 1000 and is connected to the liquid side of the indoor unit 2000 through a liquid connection pipe 500. The gas-side shut-off valve 600A serves as the external interface of the heat source unit 1000 and is connected to the gas side of the indoor unit 2000 through a gas connection pipe 600.

[0135] The outer casing 300 forms the shape of the heat source unit 1000 and provides necessary protection for the internal compressor 400 and heat dissipation assembly 100, preventing external environmental corrosion of internal components. The compressor 400 compresses refrigerant into the refrigerant circulation loop. The compressor 400 has an exhaust port 401 for discharging refrigerant and a return port 402 for recovering refrigerant. As the core component of the heat source unit 1000, the compressor 400 bears the crucial responsibility of refrigerant compression, ensuring the continuous flow of refrigerant in the circulation loop. The placement of its exhaust port 401 and return port 402 provides channels for refrigerant discharge and recovery, guaranteeing the continuity and stability of the refrigerant circulation.

[0136] Heat exchanger 400A is an air-source heat exchanger. An outdoor fan 400B guides ambient air through heat exchanger 400A, where the ambient air exchanges heat with the refrigerant, causing the refrigerant to evaporate or condense. The compressor-side 400a of heat exchanger 400A is configured as a flute-shaped tube, with its main pipe connected in series with the refrigerant piping. The compressor-side of heat exchanger 400A is configured as a distributor, with its main pipe connected in series with the refrigerant piping.

[0137] In some embodiments, the heat source unit 1000 further includes a flow path switching device 800, which includes a first interface 801, a second interface 802, a third interface 803, and a fourth interface 804. The first interface 801 is connected to the compressor 400 exhaust port 401 via a refrigerant pipe. The second interface 802 is connected to the near-compressor side 400a (the main pipe of the flute-shaped tube) of the heat source heat exchanger 400A via a refrigerant pipe. This arrangement enables fluid communication between the first interface 801 and the heat source heat exchanger 400A. The third interface 803 is connected to the gas-side shut-off valve 600A of the heat source unit 1000 via a refrigerant pipe. The fourth interface 804 is connected to the compressor 400 return port 402 via a refrigerant pipe, ensuring low-pressure cooling... The refrigerant can smoothly flow back to the compressor 400, maintaining the continuity of the refrigerant circulation. The flow path switching device has a first connected state and a second connected state. In the first connected state, the first and second interfaces are connected to each other, and the third and fourth interfaces are connected to each other but isolated from the first interface 801 and the second interface 802. In the second connected state, the first interface 801 and the third interface 803 are connected to each other, and the second interface 802 and the fourth interface 804 are connected to each other but isolated from the first interface 801 and the third interface 803. It can be understood that this flow path switching device 800 is also called a mode switching valve. As a commonly used flow path control element, the mode switching valve can flexibly switch the functions of air conditioner such as cooling, heating, or defrosting by changing the flow direction of the heat exchange medium. In cooling mode and defrosting mode, the flow path switching device is in the first connected state, and in heating mode, the flow path switching device is in the second connected state.

[0138] The refrigerant piping assembly includes an exhaust pipe 700A and a return pipe 900F. The exhaust pipe 700A is defined as the refrigerant piping connecting the first interface 801 and the exhaust port 401 of the compressor 400. The return pipe 900F is defined as the refrigerant piping connecting the fourth interface 804 and the return port 402 of the compressor 400. A gas-liquid separator 900D is connected in series on the return pipe 900F to separate the gas and liquid of the returning refrigerant.

[0139] The refrigerant piping assembly also includes a first piping PL1, a second piping PL2, and a third piping PL3. The first piping PL1 is the refrigerant piping between the compressor-side 400b of the heat source heat exchanger 400A and the liquid-side shut-off valve 500A. The second piping PL2 is the refrigerant piping between the compressor-side 400a of the heat source heat exchanger 400A and the second interface 802. The third piping PL3 connects the third connecting pipe 903 and the gas-side shut-off valve 600A. The liquid-side shut-off valve 500A and the gas-side shut-off valve 600A serve as external interfaces of the heat source unit 1000. When the refrigerant flows back to the heat source unit 1000, it may carry impurities from external pipes; therefore, a filter 900E is connected in series between the first piping PL1 and the third piping PL3.

[0140] In some embodiments, referring to Figures 1, 2 and 21, a heat dissipation assembly 100, thermally connected to the electronic control unit 900A, is connected in series on the first piping PL1. The first pipe 200 of the heat dissipation device is connected to heat dissipation connectors (20, 20a, 20b). The first pipe 200 is a part of the first piping PL1, and the main component of this part of the pipe is steel. Specifically, the first piping PL1 is divided into a near-side first piping PL1 and a far-side second piping PL1. The near-side first piping PL1 connects one of the heat dissipation connectors (20, 20a) to the far compressor side 400b of the heat source heat exchanger 400A, and the far-side first piping PL1 connects the other heat dissipation connector (20, 20b) to the liquid-side shut-off valve 500A. The first conduit 200 connected to the second adapter 22 of the heat dissipation connectors (20, 20a, 20b) is at least one of the near-side first conduit PL1 and the far-side second conduit PL1. That is, one of the near-side first conduit PL1 and the far-side first conduit PL1 is a first conduit 200 whose main component is steel, and the other of the near-side first conduit PL1 and the far-side first conduit PL1 is made of a material other than steel, such as copper or aluminum; or, both the near-side first conduit PL1 and the far-side first conduit PL1 are steel first conduits 200.

[0141] In some embodiments, referring to Figures 1, 2, and 21, the heat dissipation assembly 100, which is thermally connected to the electronic control unit 900A, is connected in series on the third piping PL3. The first pipe 200 of the heat dissipation device is connected to the heat dissipation connectors (20, 20a, 20b). The first pipe 200 is a part of the third piping PL3. The main component of this part of the pipe is steel. Specifically, the third piping PL3 is divided into a near-side third piping PL3 and a far-side third piping PL3. The near-side third piping PL3 connects one of the heat dissipation connectors (20, 20a) to the third interface 803, and the far-side third piping PL3 connects the other heat dissipation connector (20, 20b) to the gas-side shut-off valve 600A. The first conduit 200 connected to the second adapter 22 of the heat dissipation connectors (20, 20a, 20b) is at least one of the near-side third conduit PL3 ​​and the far-side third conduit PL3, that is, one of the near-side third conduit PL3 ​​and the far-side third conduit PL3 ​​is a first conduit 200 whose main component is steel, and the other of the near-side third conduit PL3 ​​and the far-side third conduit PL3 ​​is made of a material other than steel, such as copper or aluminum; or, both the near-side third conduit PL3 ​​and the far-side third conduit PL3 ​​are steel first conduits 200.

[0142] In some embodiments, referring to Figures 1 and 21, the heat dissipation assembly 100 is configured as a subcooler, and the branch pipe 700 is connected in series with the auxiliary path of the subcooler. The starting point A of the branch pipe 700 is set on the first fitting PL3 or on the third piping PL3. The first pipe 200 of the heat dissipation device is connected to the heat dissipation connecting pipe (20c / 20d). The first pipe 200 is a part of the branch pipe 700. The main component of this part of the pipe is steel. Specifically, the branch pipe 700 is distinguished into a proximal branch pipe 700 and a distal branch pipe 700. The proximal branch pipe 700 connects one of the heat dissipation connecting pipes (20c) to the starting point A of the branch pipe 700, and the distal branch pipe 700 connects the other heat dissipation connecting pipe (20d) to the ending point N of the branch pipe 700. The first conduit 200 connected to the second adapter 22 of the heat dissipation connectors (20, 20a, 20b) is at least one of a proximal branch pipe 700 and a distal branch pipe 700, that is, one of the proximal branch pipe 700 and the distal branch pipe 700 is a first conduit 200 whose main component is steel, and the other of the proximal branch pipe 700 and the distal branch pipe 700 is made of a material other than steel, such as copper or aluminum; or, both the proximal branch pipe 700 and the distal branch pipe 700 are rigid first conduits 200.

[0143] In some embodiments, the second piping PL2 is made of a rigid material to increase the pressure resistance of the refrigerant piping.

[0144] The structure of the heat dissipation device (which includes a heat dissipation assembly 100 and a first pipeline) and the electronic control device of the heat source unit 1000 will be described below using Figures 15 to 20 as examples. It is understood that the heat dissipation assembly 100 of the heat source unit 1000 may also be other embodiments described above, and the electronic control device of the heat source unit 1000 may also be other embodiments described above.

[0145] The electronic control device includes an electronic control box 900, a control unit 900A installed on the control box 900 plate 900B, and an electronic control unit 900A mounted on the plate 900B. The electronic control box includes a box body 901, a top cover 902, and a front cover (not shown). The top cover 902 covers the upper opening of the box body 901, and the front cover covers the front opening of the box body 901. The front opening serves as an electronic control maintenance port. When maintenance is required, the front cover is removed (as shown in Figure 19). The board portion 900B is installed inside the electrical control box 900 and between the front cover and the rear wall of the box body 901. The board portion 900B divides the internal cavity of the electrical control box 900 into a first cavity 910 and a second cavity 920. The first cavity 910 is located on the front side of the board portion 900B and is exposed through the electrical control maintenance port. The second cavity 920 is located between the board portion 900B and the rear wall of the box body 901. The electrical control unit 900A is installed in the first cavity 910, and the heat dissipation assembly 100 is installed in the second cavity 920. The board portion 900B has a clearance hole 900c that connects the first cavity 910 and the second cavity 920.

[0146] The electrical control box 900 is installed inside the outer shell 300 within the heat source unit 1000. The outer shell 300 has a support frame, and the top cover 902 is provided in the hanging hole and hung on the support frame of the outer shell 900 for pre-positioning the electrical control device. Fixing parts 903 are provided on the left and right side walls of the box body 901 of the electrical control box 900. The mounting parts are fixedly connected to the support frame of the outer shell, thereby fixing the electrical control device inside the outer shell.

[0147] The electronic control unit 900A includes a circuit board 900a and an electronic component 900b mounted on the circuit board 900a. The electronic component 900b that needs to be cooled is mounted on the rear side panel of the circuit board 900a and is arranged opposite to the clearance hole 900c in the front-back direction.

[0148] The heat dissipation assembly 100 includes a heat dissipation body 10, heat dissipation pipes 20 located on both sides of the heat dissipation body 10, and a heat dissipation plate 900H. The heat dissipation body 10 and the heat dissipation plate 900H can both be made of the same thermally conductive material, such as aluminum.

[0149] The heat dissipation body 10 includes multiple aluminum plates 11 arranged at intervals along the vertical direction. Each plate 11 extends in the horizontal direction. Each plate 11 includes a first plate 111 and two second plates 112, with the two second plates 112 attached to the front and rear surfaces of the first plate 111. A heat dissipation plate 900H is welded to or detachably fixed to one or more front-side second plates 112. The heat dissipation plate 900H has protrusions that extend into the first cavity 910 through clearance holes 900c and make thermally conductive connections with multiple electronic components 900b that need to be cooled. These connections can be direct contact or have thermally conductive adhesive between them. The auxiliary cooling medium flow in the second plate 112 absorbs heat from the main cooling medium flow in the first plate 111. That is, the heat dissipation assembly 100 is a subcooler. At the same time, the second plate 112 makes thermally conductive contact with the electronic components 900b through the heat dissipation plate 900H, thereby allowing the auxiliary cooling medium flow in the second plate 112 to absorb heat from the electronic components 900b.

[0150] Each heat dissipation pipe 20 includes a manifold 24 (241 / 242), a first adapter 21, and a second adapter 22. The manifold 24 and the first adapter 21 are made of aluminum, and the second adapter 22 is made of copper. There are four heat dissipation pipes 20, defined as main pipe 20a, main pipe 20b, auxiliary pipe 20c, and auxiliary pipe 20d. A pair of heat dissipation pipes (20a / 20b) is defined as a main pipe (20a / 20b), and a pair of heat dissipation pipes (20c / 20d) are defined as auxiliary pipes (20c / 20d). The pair of main pipes (20a / 20b) are arranged opposite each other in the left-right direction, and the pair of auxiliary pipes (20c / 20d) are arranged opposite each other in the left-right direction and located between the pair of main pipes (20a / 20b). The first plate 111 extends along the left... The length in the right direction is greater than the length of the second plate 112. The left end of the first plate 111 passes through an auxiliary pipe 20c and is inserted into a main pipe 20b. The right end of the first plate 111 passes through another auxiliary pipe 20d and is inserted into another main pipe 20a. The left end of each second plate 112 is inserted into an auxiliary pipe 20c, and the right end of each second plate 112 is inserted into another auxiliary pipe 20d. The portion of the first plate 111 located within the auxiliary pipes (20c / 20d) exchanges heat with the refrigerant in the auxiliary pipes (20c / 20d), increasing the subcooling efficiency of the main refrigerant flow. A pair of main pipes (20a / 20b) and a pair of auxiliary pipes (20c / 20d) are located on the same vertical plane as the first plate 111, reducing the width of the heat dissipation assembly 100 in the front-to-back direction, thus adapting to the miniaturized design of the electrical control box 900.

[0151] Each main pipeline (20a / 20b) is provided with one or more mounting blocks 900C. The mounting block 900C is provided with bolt holes. The bolt passes through the front side of the plate body 900B and is fixed to the mounting hole bolt, thereby fixing the heat dissipation component 100 to the plate body 900B.

[0152] The first adapter 21 and the second adapter 22 of each heat dissipation pipe (20a / 20b, 20c / 20d) are welded together. A protective sleeve 25 is provided at the welding position of the two to isolate the corrosion of the external environment. A sealing block 26 is provided around the protective sleeve 25. The sealing block 26 is provided on the wall of the electrical control box 900. Please refer to Figure 15. Multiple wire holes are provided on the bottom wall of the electrical control box 900 in the first cavity 910 to pass through the wires of the electrical control unit 900A. The bottom wall of the electrical control box 900 is provided in the second cavity 920 to pass through the pipe. The sealing block 26 on each heat dissipation pipe 20 is placed in the pipe hole and is fitted at the welding position of the first adapter 21 and the second adapter 22. The manifold 24 and the first adapter 21 are sealed inside the electrical control box 900. The second adapter 22 extends out of the electrical control box 900 to facilitate connection with the external refrigerant piping. The four second adapters 22 of the four heat dissipation pipes 20 extend from the bottom wall of the electrical control box 900 and connect to the external refrigerant piping.

[0153] The second transition section 22 of each main pipeline (20a / 20b) is exposed outside the electrical control box 900 and connected to the first conduit PL1 or the third conduit PL3. Specifically, the second transition section 22 of one first main pipeline 20a is exposed outside the electrical control box 900 and connected to the nearby first conduit PL1 or the nearby third conduit PL3, and the second transition section 22 of the other main pipeline 20b is exposed outside the electrical control box 900 and connected to the distant first conduit PL1 or the distant third conduit PL3.

[0154] The second transition part 22 of each auxiliary road pipe is exposed outside the electrical control box 900 and connected to the branch pipe 700. Specifically, the second transition part 22 of one auxiliary road pipe 20c is exposed outside the electrical control box 900 and connected to the near branch pipe 700, and the second transition part 22 of the other auxiliary road pipe 20d is exposed outside the electrical control box 900 and connected to the far branch pipe 700.

[0155] In one embodiment, the subcooler is connected in series with the first pipe PL1 (third pipe PL3). The starting point A of the branch pipe 700 is set on the first pipe PL1 (third pipe PL3), and the ending point N of the branch pipe 700 is set on the return pipe 900F or the compressor injection port 403. At least one of the near-side first pipe PL1 (near-side third pipe PL3), the far-side first pipe PL1 (near-side third pipe PL3), the near-side branch pipe 700, and the far-side branch pipe 700 is a steel first pipe 200. When all four of the above are first pipes 200, the influence of external vibration on the electronic control device can be more effectively mitigated. Moreover, the pressure resistance of steel pipe is better than that of copper. The branch pipe 700 can increase the pressure resistance and also alleviate the pressure pulse on the pipe wall caused by the auxiliary refrigerant flowing through the gaseous refrigerant after cooling the main refrigerant flow.

[0156] The electronic control unit 900A is the control core of the heat source unit 1000, mainly consisting of a circuit board 900a and multiple electronic components 900b mounted on the circuit board 900a. These electronic components 900b are responsible for controlling various functions of the heat source unit 1000, such as startup, operation, and monitoring. The circuit board 900a, as the carrier of the electronic components 900b, provides stable electrical connections and signal transmission paths. The electronic components 900b include, but are not limited to, resistors, capacitors, transistors, and integrated circuits, which work together to achieve precise control of the heat source unit 1000.

[0157] In addition, the plate body 900B may have multiple ventilation holes 900d that connect the first cavity 910 and the second cavity 920. A cooling fan may also be provided inside the electrical control box 900 to drive the air inside the electrical control box 900 to circulate within the first cavity 910 and the second cavity 920, thereby improving heat dissipation efficiency.

[0158] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only set as exemplary illustrations and should not be construed as limitations on this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0159] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heat dissipation device, as part of a refrigerant circulation loop, wherein, The system includes a first pipe and a heat dissipation assembly connected to the first pipe. The first pipe is part of a refrigerant circulation loop and its main component is steel. The heat dissipation assembly includes: A heat dissipation body, having a portion of a refrigerant circulation loop, the main component of the heat dissipation body being aluminum, and the heat dissipation body being thermally connected to the target cooling component; and The heat dissipation pipe includes: A first adapter, the first end of which is connected to the heat dissipation body, wherein the main component of the first adapter is aluminum; The second adapter is disposed at the second end of the first adapter, and the main component of the second adapter is copper. The first pipeline is connected to the second adapter.

2. The heat dissipation device as described in claim 1, wherein, The portion where the first pipeline connects to the second adapter is defined as the third adapter, and the main component of the third adapter is steel.

3. The heat dissipation device as described in claim 2, wherein, The main component of the first pipeline is stainless steel, and the main component of the third adapter is stainless steel.

4. The heat dissipation device as described in claim 1, wherein, The portion where the first pipeline connects to the second adapter is defined as the third adapter, and the main component of the third adapter is copper.

5. The heat dissipation device as described in claim 4, wherein, The first pipeline includes a main pipe section, the main component of which is steel, and the third adapter section is a coating on the inner or outer pipe surface of the first end of the main pipe section, the main component of which is copper.

6. The heat dissipation device as described in claim 4, wherein, The first pipeline includes a main pipe, the main pipe being primarily composed of steel, and a third adapter, which is a sleeve fitted onto the inner or outer pipe surface of the first end of the main pipe. The end of the sleeve furthest from the main pipe is fitted onto the inner or outer pipe surface of the second adapter, and the main component of the sleeve is copper.

7. The heat dissipation device according to any one of claims 1 to 6, wherein, The first end of the first pipe is connected to the second adapter, and the second end of the first pipe is connected to the heat source heat exchanger of the refrigerant circulation loop.

8. The heat dissipation device as described in claim 5, wherein, The main pipe section includes a first pipe section, a transition pipe section, and a second pipe section connected in sequence. The coating covers the inner and / or outer pipe surfaces of the first pipe section, the transition pipe section, and the second pipe section. The first pipe section is closer to the second junction section than the second pipe section. The inner diameter of the first pipe section is greater than or less than the inner diameter of the second pipe section, or the inner diameters of the first pipe section, the transition pipe section, and the second pipe section are the same.

9. The heat dissipation device as claimed in claim 6, wherein, The main pipe section includes a first pipe section, a transition pipe section, and a second pipe section connected in sequence. The first pipe section is closer to the second junction section than the second pipe section, and the sleeve is fitted onto the outer surface of the first pipe section. The inner diameter of the first pipe section is greater than or less than the inner diameter of the second pipe section, or the inner diameters of the first pipe section, the transition pipe section, and the second pipe section are the same.

10. The heat dissipation device as claimed in claim 6, wherein, The main pipe section includes a first pipe section, a transition pipe section, and a second pipe section connected in sequence. The first pipe section is closer to the second junction section than the second pipe section, and the sleeve is nested inside the inner pipe surface of the first pipe section. The inner diameter of the first pipe section is greater than or less than the inner diameter of the second pipe section, or the inner diameters of the first pipe section, the transition pipe section, and the second pipe section are the same.

11. The heat dissipation device as claimed in claim 9 or 10, wherein, The sleeve includes a first sub-tube, a transition sub-tube, and a second sub-tube connected to each other, wherein the first sub-tube is farther away from the second adapter relative to the second sub-tube; The inner diameter of the first sub-tube is greater than or less than the inner diameter of the second sub-tube, or the inner diameters of the first sub-tube, the transition sub-tube, and the second sub-tube are the same.

12. The heat dissipation device according to any one of claims 1 to 11, wherein, The target cooling component is a heating element in the refrigerant circulation loop or a heating electronic component in the electronic control unit.

13. The heat dissipation device according to any one of claims 1 to 12, wherein, The heat dissipation body includes at least one plate tube, and each plate tube includes at least one layer of microchannels.

14. The heat dissipation device as claimed in claim 13, wherein, The heat dissipation body is constructed as a plate tube, and the plate tube includes multiple microchannels; The heat dissipation pipe includes: A connecting part, which is constructed as a hollow, flat shape for the plate tube to be inserted, and the main component of the connecting part is aluminum; The first adapter is configured as a cylindrical tube, and the first end of the first adapter is connected to the connecting part; The second adapter is formed in the shape of a cylindrical tube, and the first adapter and the second adapter are coaxially arranged.

15. The heat dissipation device as claimed in claim 13, wherein, The number of heat dissipation pipes is two, which are respectively connected to both ends of the heat dissipation body. The two heat dissipation pipes include: Two connecting parts, which are constructed as hollow flat parts, are respectively inserted into both ends of the plate tube; Two first adapters are respectively connected to the two connecting parts; Two second adapters are provided, one of which is connected to the first pipeline and the other is connected to a steel liquid-side outlet pipe, which has a liquid-side outlet for the refrigerant circulation loop.

16. The heat dissipation device as claimed in claim 13, wherein, The heat dissipation body is constructed as multiple plates and tubes, the surfaces of the multiple plates and tubes are located on the same plane and the multiple plates and tubes are arranged at intervals in sequence along a direction parallel to the plane; The heat dissipation pipe also includes: The manifold, whose main component is aluminum, has one end of each of the plate tubes inserted into the lumen of the manifold; The first adapter is configured as a circular tube, and the first end of the first adapter is connected to the manifold. The second adapter is formed in the shape of a cylindrical tube, and the first adapter and the second adapter are coaxially arranged.

17. The heat dissipation device as claimed in claim 13, wherein, The number of heat dissipation pipes is two, which are respectively connected to both ends of the heat dissipation body. The two heat dissipation pipes include: Two manifolds, defined as the first manifold and the second manifold respectively, are located closer to the heat source heat exchanger of the refrigerant circulation loop than the second manifold. The first manifold and the second manifold are respectively used for inserting the two ends of a plurality of plate tubes. Two first adapter sections are respectively connected to the first manifold and the second manifold; Two second adapters are provided, one of which is connected to the first pipeline and the other is connected to the liquid-side outlet pipe, which has the liquid-side outlet of the refrigerant circulation loop.

18. The heat dissipation device as claimed in claim 13, wherein, The number of heat dissipation pipes is four. The four heat dissipation pipes are defined as a pair of main pipes and a pair of auxiliary pipes. One main pipe and one auxiliary pipe are set and located on the same side of the heat dissipation body, and another main pipe and another auxiliary pipe are set and located on the opposite side of the heat dissipation body. Each of the aforementioned plates and tubes includes at least a first plate and a second plate that are attached to each other. The two ends of the microchannels of the first plate are respectively connected to a pair of main pipeline connectors, and the two ends of the microchannels of the second plate are respectively connected to a pair of auxiliary pipeline connectors. A second adapter of at least one of the pair of main pipeline pipes and the pair of auxiliary pipeline pipes is connected to the first pipeline.

19. A heat source unit, wherein, include: The outer casing forms the shape of the heat source unit; A compressor that compresses refrigerant into a refrigerant circulation loop, the compressor having an exhaust port for discharging refrigerant and a return port for recovering refrigerant; Heat dissipation assembly, the heat dissipation assembly comprising: The heat dissipation body has a portion of the refrigerant circulation loop, the main component of the heat dissipation body is aluminum, and the heat dissipation body is thermally connected to the target cooling component. A heat dissipation connector includes: a first adapter portion, the first end of which is connected to the heat dissipation body, the main component of which is aluminum; and a second adapter portion, which is disposed at the second end of which is made of copper. A heat source heat exchanger has a near-compressor side and a far-compressor side, wherein the refrigerant between the near-compressor side and the far-compressor side exchanges heat with a heat source, the far-compressor side of the heat source heat exchanger is connected to a second transition section via a first steel pipe, and the near-compressor side of the heat source heat exchanger is connected to the exhaust port of the compressor via a steel refrigerant piping.

20. The heat source unit as claimed in claim 19, wherein, It also includes a flow path switching device, which comprises: The first interface is connected to the exhaust port of the compressor via an exhaust pipe; The second interface is connected to the compressor side of the heat source heat exchanger via the second pipeline; The third interface is connected to the gas-side outlet of the heat source unit via a gas-side outlet pipe; and The fourth interface is connected to the return port of the compressor via a return pipe.

21. The heat source unit as claimed in claim 20, wherein, The heat source unit includes: Electrical control box; The electronic control unit includes a circuit board and multiple electronic components disposed on the circuit board; The board body is disposed inside the electrical control box to divide the internal space of the electrical control box into a first cavity and a second cavity, and the circuit board and the plurality of electronic components are disposed in the first cavity; The heat dissipation body is disposed in the second cavity, the plate part includes a relief hole, a heat dissipation plate is disposed in the relief hole and the two plate surfaces are respectively thermally connected to the plurality of electronic components and the heat dissipation body; The heat dissipation pipe extends from the second cavity out of the electrical control box, wherein the second adapter is located outside the electrical control box and is connected to the first pipe.

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