Flow dividing assembly, indoor unit and heating and ventilation system

Abstract

The invention discloses a flow dividing assembly, an indoor unit and a heating and ventilation system.The flow dividing assembly comprises a flow dividing main pipe and a flow dividing component, the flow dividing main pipe is provided with a flow inlet and a plurality of flow outlets, and the multiple flow outlets are formed in the same side of the side wall of the flow dividing main pipe; the flow inlet is formed in the side, adjacent to the side where the flow outlet is located, of the flow dividing main pipe in the circumferential direction. The flow dividing component is arranged in the flow dividing main pipe and divides the flow dividing main pipe into an inflow section and an outflow section which are arranged in the axial direction of the flow dividing main pipe, the flow dividing component is provided with a plurality of flow dividing holes, the flow dividing holes are communicated with the inflow section and the outflow section, the inflow opening is communicated with the inflow section, and the outflow opening is communicated with the outflow section. And the plurality of outflow ports are communicated with the outflow section. According to the technical scheme, the structure of the flow dividing assembly can be optimized, the manufacturing difficulty is reduced, the production cost is saved, and the problem that in the prior art, a flow dividing assembly is complex in structure is solved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a diversion component, an indoor unit and a heating and ventilation system. Background Art

[0002] In current HVAC system technologies, evenly distributing refrigerant across multiple channels is typically accomplished by installing flow dividers upstream of the channels. This design ensures precise and even flow of refrigerant across the channels, ensuring efficient HVAC system operation.

[0003] However, existing flow splitters generally utilize capillary distributors to perform the flow splitting task. Capillary distributors have complex internal structures, numerous components, and intricate connections, resulting in a complex flow splitter structure and significantly increased piping. During production, long piping increases the amount of pipe material used and the processing precision and bending requirements. During assembly, the operation becomes significantly more difficult, requiring workers to spend considerable time and effort on component connections and installation, which not only prolongs production cycles but also increases costs. Summary of the Invention

[0004] The embodiment of the present application provides a diversion component that can optimize the structure of the diversion component, reduce manufacturing difficulty and save production costs, and solve the problems of complex diversion component structure in the prior art.

[0005] In a first aspect, an embodiment of the present application provides a flow diversion assembly, which is applied to an indoor unit. The flow diversion assembly includes:

[0006] A flow-dividing main pipe having an inlet and a plurality of outlets, wherein the plurality of outlets are provided on the same side of a sidewall of the flow-dividing main pipe, and the inlet is provided on a side of the flow-dividing main pipe adjacent to a side where the outlets are provided in a circumferential direction of the flow-dividing main pipe; and

[0007] The diverter member is arranged in the diverter main pipe and divides the diverter main pipe into an inflow section and an outflow section arranged along the axial direction of the diverter main pipe. The diverter member has a plurality of diverter holes, which connect the inflow section and the outflow section. The inlet is connected to the inflow section, and the plurality of outlets are connected to the outflow section.

[0008] In some embodiments, the plurality of flow outlets are arranged sequentially along the axial direction of the diverter main pipe.

[0009] In some embodiments, a center line connecting the plurality of outflow ports is parallel to a central axis of the diversion main pipe.

[0010] In some embodiments, the inner wall of the diversion main pipe is provided with one of a mounting protrusion and a slot, and the outer wall of the diversion component is provided with the other of the mounting protrusion and the slot, and the diversion component is fixed in the diversion main pipe by snap-fitting with the mounting protrusion through the slot.

[0011] In some embodiments, the mounting protrusion is circumferentially arranged along the inner wall of the diversion main pipe;

[0012] And / or, the clamping groove is arranged in an annular shape along the outer circumference of the diverter component.

[0013] In some embodiments, the plurality of diversion holes are arranged along the circumference of the central axis of the diversion main pipe.

[0014] In some embodiments, a filter element is further included, and the filter element is disposed in the diversion main pipe and located between the inlet and the diversion plate.

[0015] Some of the embodiments further include a porous medium member fixed to the flow dividing main pipe and located in the inflow section to block the flow of the cold medium.

[0016] In some embodiments, the shunt main pipe comprises:

[0017] a pipe body having the inlet and the outlet, wherein the flow dividing member is connected to the pipe body;

[0018] a first end cap connected to and blocking an end of the tube body close to the inlet; and

[0019] a second end cap, the second end cap being connected to and sealing an end of the tube body away from the first end cap;

[0020] The porous medium member extends from the first end cap toward the second end cap.

[0021] In some embodiments, the porous medium member is a medium tube, and the outer peripheral wall of the medium tube is in abutment with the inner wall of the tube body and avoids the inlet.

[0022] In some embodiments, the medium tube extends from the first end cover to between the flow dividing member and the inlet;

[0023] The medium pipe has a channel, which is connected to the diversion hole of the diversion component. The medium pipe is provided with a through hole penetrating two opposite surfaces, and the through hole is connected to the channel and the inlet.

[0024] In some embodiments, the medium tube includes a cylinder and an end plate, wherein the end plate is connected to and blocks one end of the cylinder to enclose and form the channel;

[0025] The cylinder is provided with the through hole, the outer peripheral wall of the cylinder is abutted against the inner wall of the tube body, and the end plate abuts against and covers the first end cover.

[0026] In some embodiments, the thickness d of the medium tube satisfies: 1 mm ≤ d ≤ 3 mm.

[0027] In some embodiments, the porous medium member is provided in a block shape, is connected to the first end cover, and is spaced apart from the inner wall of the tube body and avoids the inlet.

[0028] In some embodiments, the porous medium extends from one end of the porous medium away from the first end cap to between the flow dividing member and the inlet;

[0029] And / or, the cross section of the porous medium gradually decreases from the first end cover in a direction close to the diverter member;

[0030] And / or, a minimum distance D between the outer wall of the porous medium member and the inner wall of the pipe body satisfies: 2 mm ≤ D ≤ 3 mm.

[0031] In some embodiments, the flow-dividing main pipe is provided with an uneven portion on at least the pipe wall of the inflow section to disturb the flow of the refrigerant.

[0032] In some embodiments, the shunt main pipe comprises:

[0033] a pipe body, the flow dividing member being connected to the pipe body, the pipe body having the inlet and the outlet;

[0034] a first end cap connected to and blocking an end of the tube body close to the inlet; and

[0035] a second end cap, the second end cap being connected to and sealing an end of the tube body away from the first end cap;

[0036] An uneven portion is formed on the inner wall surface of the pipe body.

[0037] In some embodiments, the uneven portion is provided along the circumference of the inner wall of the tube body;

[0038] And / or, the uneven portion extends from between the diverting member and the inlet to the first end cover.

[0039] In some embodiments, the uneven portion extends from the inflow section to the outflow section.

[0040] In some embodiments, the tube body is a threaded tube, and the uneven portion is a threaded structure on the inner wall of the threaded tube.

[0041] In some embodiments, the inflow section is provided with a first flow guiding structure, and the first flow guiding structure is used to guide the refrigerant medium flowing in from the inlet to the diverter component.

[0042] In some embodiments, the shunt main pipe comprises:

[0043] a pipe body, the flow dividing member being connected to the pipe body, the pipe body having the inlet and the outlet;

[0044] a first end cap connected to and blocking an end of the tube body close to the inlet; and

[0045] a second end cap, the second end cap being connected to and sealing an end of the tube body away from the first end cap;

[0046] Wherein, at least a portion of the first end cover is the first flow-guiding structure.

[0047] In some embodiments, the first end cover is arranged to be inclined relative to the axial direction of the tube body.

[0048] In some embodiments, the first end cover is tilted from a horizontal plane in a direction close to the inlet.

[0049] In some embodiments, the angle A between the first end cover and the central axis of the tube body satisfies: 30°≤A≤60°.

[0050] In some embodiments, the diversion assembly also includes a first guide plate, which is detachably installed in the diversion main pipe and located in the inflow section. The first guide plate is inclined to the axial direction of the pipe body, and the first guide structure is the first guide plate.

[0051] In some embodiments, the outflow section is provided with a second flow guiding structure, and the second flow guiding structure is used to guide the refrigerant medium flowing through the diverter component to the outflow outlet.

[0052] In some embodiments, at least a portion of the second end cap is the second flow guide structure;

[0053] Alternatively, the diversion assembly further includes a second guide plate, which is detachably installed in the tube body and located in the outflow section. The second guide plate is inclined relative to the axial direction of the tube body, and the second guide plate is the second guide structure.

[0054] In a second aspect, an embodiment of the present application provides an indoor unit, the indoor unit comprising a heat exchanger, an electronic expansion valve, and the diversion assembly as described above;

[0055] The diversion component also includes an inlet pipe and multiple outflow pipes, one end of the inlet pipe is connected to the inlet, the other end of the inlet pipe is connected to the electronic expansion valve, one end of the multiple outflow pipes is connected to the multiple outflow ports in a one-to-one correspondence, and the other end of the outflow pipe is connected to the heat exchanger.

[0056] In a third aspect, an embodiment of the present application provides a HVAC system, comprising an outdoor unit and an indoor unit as described above, wherein the indoor unit and the outdoor unit form a refrigerant cycle.

[0057] Based on the above embodiment, a diverter main pipe having an inlet and multiple outlets provided on the sidewalls is employed, and a diverter member disposed within the diverter main pipe has multiple diverter holes that separate the diverter main pipe into an inflow section and an outflow section. The inflow section is connected to the inflow section, and the multiple outlets are connected to the outflow section. During diversion, the refrigerant enters the inflow section from the inflow section and is evenly distributed to the outflow section through the diverter holes in the diverter member, where it then flows evenly to the multiple outlets provided on the sidewalls. Furthermore, the arrangement of outlets on the same side allows the diverter assembly to connect to the various channels of the indoor unit, aligning the connecting pipes more centrally and orderly. This further reduces connection complexity and the possibility of pipe intersections, reducing piping usage and making the overall structure more compact. Furthermore, the circumferential arrangement of adjacent inflows and outlets on the diverter main pipe allows operators to simultaneously connect the inflow to multiple outlets in adjacent areas during pipe connection operations, eliminating the need to frequently move between different circumferential positions of the diverter main pipe or adjust the operating angle, further improving pipe connection efficiency and reducing operational difficulty.

[0058] This method of diverting flow through diverter holes greatly ensures flow consistency, overcoming the uneven flow distribution problem of traditional capillary distributors. Furthermore, by placing the diverter components directly within the diverter main pipe, the internal structure of the diverter assembly is simplified, eliminating the need for complex components and connections, and avoiding a significant increase in piping. This not only optimizes the overall structure of the diverter assembly and reduces the requirements for pipe material consumption, processing accuracy, and bending process during the manufacturing process, but also reduces the operational difficulty during assembly, eliminating the need for workers to spend excessive time and energy on component connection and installation, thereby reducing the manufacturing difficulty of the diverter assembly and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0060] Figure 1 This is a structural diagram of an embodiment of the indoor unit of the present application;

[0061] Figure 2 This is a structural diagram of the indoor unit of this application with part of the casing removed;

[0062] Figure 3 This is a structural diagram of an embodiment of the diversion component of the present application;

[0063] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle;

[0064] Figure 5 This is a structural diagram of the diversion component of this application from another perspective;

[0065] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at the middle BB;

[0066] Figure 7 for Figure 6 A partial enlarged view of point A in the middle;

[0067] Figure 8 Another embodiment of the diversion component of the present application is Figure 5 Schematic diagram of the cross-sectional structure at the middle BB;

[0068] Figure 9 Another embodiment of the diversion component of this application is Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle;

[0069] Figure 10 This is a structural diagram of another embodiment of the diversion component of the present application;

[0070] Figure 11 This is a schematic top view of another embodiment of the diversion assembly of the present application;

[0071] Figure 12 for Figure 5 Schematic diagram of the cross-sectional structure at CC in the middle.

[0072] Description of Figure Numbers:

[0073] 1. Indoor unit; 10. Diverter assembly; 11. Diverter main pipe; 111. Pipe body; 111A. Inlet; 111B. Outlet; 1111. Mounting protrusion; 1112. Uneven portion; 112. First end cap; 113. Second end cap; 11A. Outflow section; 11B. Inflow section; 12. Diverter member; 121. Diverter hole; 122. Slot; 13. Filter element; 14. Porous medium element; 141. Cylinder; 1411. Through hole; 142. End plate; 14A. Passage; 15. Inflow pipe; 16. Outflow pipe; 20. Electronic expansion valve; 30. Heat exchanger; 40. Fan; 50. Casing; 51. Air intake; 52. Air outlet.

[0074] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0075] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0076] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0077] 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 understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0079] The first aspect of the present application proposes a HVAC system. In an embodiment of the present application, the HVAC system includes but is not limited to equipment such as air conditioners, multi-split units, and heat pumps, and can be used in large-scale places such as shopping malls and office buildings. The HVAC system may include an indoor unit, an outdoor unit, and a connecting pipe. The indoor unit is connected to the outdoor unit through a connecting pipe so that a refrigerant circulation is formed between the indoor unit and the outdoor unit. In some actual usage scenarios, the indoor unit of the present application can be installed indoors, the outdoor unit is responsible for cooling or heating, and transports the refrigerant through the connecting pipe. The refrigerant exchanges heat with the indoor air and the outdoor air respectively, and the indoor unit is responsible for transporting cold air or hot air into the room to achieve the effect of cooling or heating.

[0080] Reference Figure 1 and Figure 2 In a second aspect, the present application provides an indoor unit 1. The indoor unit 1 may include, but is not limited to, a duct unit, a wall-mounted indoor unit, or a floor-standing indoor unit. Duct units are typically installed on a ceiling using a suspended ceiling and can be concealed within the ceiling. This makes them more concealed and aesthetically pleasing compared to other indoor unit 1 structures. Furthermore, duct units utilize a decentralized air outlet, resulting in a more comfortable airflow. The indoor unit 1 includes a housing 50, a fan 40, a heat exchanger 30, an electrical control box, an electronic expansion valve 20, and a diversion assembly 10.

[0081] The casing 50 forms the outer contour of the indoor unit 1. At the same time, the interior of the casing 50 defines a connected pressure diffuser chamber, a fan chamber, and a heat exchange chamber. The casing 50 also forms an air intake 51 connected to the fan chamber and an air exhaust 52 connected to the heat exchange chamber. The fan chamber is configured to accommodate the fan 40. The pressure diffuser chamber is used to receive the airflow blown from the fan chamber and expand it to increase the pressure and flow of the airflow, thereby improving the cooling or heating effect. The heat exchange chamber is configured to accommodate the heat exchanger 30. In this way, the external airflow can flow in from the air intake 51 under the action of the fan 40, and flow through the fan chamber, the pressure diffuser chamber, and the heat exchange chamber in sequence, so that after heat exchange through the heat exchanger 30 in the heat exchange chamber, the external airflow is heated or cooled, and then flows out from the air exhaust 52.

[0082] The fan 40 can be configured in a cylindrical, long strip. The fan 40 can be a crossflow impeller, a centrifugal fan 40, or an axial flow fan 40, among others. When the fan 40 is configured as a crossflow impeller, it has advantages such as a small radial dimension, low rotational speed, low noise, and uniform air output. Its axial length can be arbitrarily extended without affecting the gas flow state, among other advantages. Furthermore, compared to centrifugal fans 40 or axial flow fans 40, crossflow impellers are less expensive. Furthermore, the fan 40 can be positioned directly opposite the air intake 51, so that external airflow can flow to the fan 40 via the air intake 51 via a shorter path, reducing losses during the flow process.

[0083] The heat exchanger 30 is housed in the heat exchange chamber and is connected to the outdoor unit via a connecting pipe, so that the refrigerant can circulate between the outdoor unit and the indoor unit 1. When hot air flows into the heat exchange chamber and passes through the heat exchanger 30, the hot air will exchange heat with the refrigerant in the heat exchanger 30, so that the refrigerant can absorb heat, and the heat can be transferred to the refrigerant to achieve a cooling effect. The heat exchanger 30 can be roughly V-shaped, which can increase the heat exchange area and improve the heat exchange efficiency. The heat exchanger 30 and the exhaust port 52 can be arranged to face each other. In this way, the airflow can flow to the exhaust port 52 via a shorter path after flowing through the heat exchanger 30, thereby reducing the loss of the airflow during the flow process.

[0084] The electrical control box can be mounted on the surface of the housing 50 to achieve fixed installation. The electrical control box can be electrically connected to the fan 40 and the heat exchanger 30 respectively to control or adjust the fan 40 and the heat exchanger 30. For example, when the temperature in the environment where the indoor unit 1 is operating reaches a set value, the electrical control box can send a command to shut down the fan 40 and the heat exchanger 30, thereby reducing energy consumption and preventing the indoor temperature from being too low or too high.

[0085] The electronic expansion valve 20 plays a key regulatory role in the indoor unit 1. It connects to the outdoor unit via a specific pipeline and accurately receives commands from the electronic control box. Based on various operating parameters such as indoor ambient temperature and heat load, the electronic expansion valve 20 dynamically adjusts its opening, thereby precisely controlling the flow of refrigerant from the outdoor unit to the indoor unit 1. This precise regulation effectively prevents system performance issues caused by abnormal refrigerant flow, ensuring that the HVAC system maintains efficient and stable operation.

[0086] The diverter assembly 10 is interconnected with the electronic expansion valve 20 and the heat exchanger 30. After the refrigerant's flow rate is precisely controlled by the electronic expansion valve 20, it flows into the diverter assembly 10. The diverter assembly 10 evenly distributes the refrigerant to each channel, allowing it to flow smoothly into the heat exchanger 30. By distributing the refrigerant in this way, the diverter assembly 10 ensures a balanced distribution of the refrigerant within the heat exchanger 30, greatly improving heat exchange efficiency. This provides strong support for the indoor unit 1 to achieve stable and efficient cooling or heating functions, ensuring the smooth operation of the entire HVAC system.

[0087] However, existing flow splitters generally utilize capillary distributors to perform the flow splitting task. Capillary distributors have complex internal structures, numerous components, and intricate connections, resulting in a complex flow splitter assembly and significantly increased piping. During production, long piping increases the amount of tubing required and demands higher machining precision and bending processes. Assembly becomes significantly more difficult, requiring significant time and effort to connect and install components, which not only prolongs production cycles but also increases costs.

[0088] To resolve the above issues, please refer to Figure 3 and Figure 4 The third aspect of the present application proposes a diversion assembly 10 . In an embodiment of the present application, the diversion assembly 10 includes a diversion main pipe 11 and a diversion component 12 .

[0089] The shunt main pipe 11 has an inlet 111A and multiple outlets 111B. The multiple outlets 111B are located on the same side of the side wall of the shunt main pipe 11, and the inlet 111A is located on a side of the shunt main pipe 11 that is adjacent to the side where the outlets 111B are located in the circumferential direction of the shunt main pipe 11. The shunt main pipe 11 can be made of a metal material, such as stainless steel, which has good corrosion resistance and strength, and can ensure the stability and reliability of the shunt main pipe 11 during long-term use. The shunt main pipe 11 can be provided in a circular tube shape. This shape allows the refrigerant to flow more smoothly inside, reduces flow resistance, and is also convenient for processing and installation.

[0090] The flow dividing member 12 is disposed within the flow dividing main pipe 11 and divides the flow dividing main pipe 11 into an inflow section 11B and an outflow section 11A arranged along the axial direction of the flow dividing main pipe 11. The flow dividing member 12 can be provided in a plate-like shape. The plate-like flow dividing member 12 can be relatively stably installed within the flow dividing main pipe 11 and can effectively divide the flow dividing main pipe 11.

[0091] The diverter member 12 has a plurality of diverter holes 121, which connect the inflow section 11B and the outflow section 11A. The inflow inlet 111A is connected to the inflow section 11B, and the plurality of outflow outlets 111B are connected to the outflow section 11A. The arrangement of the plurality of diverter holes 121 enables the refrigerant flowing in from the inflow inlet 111A to be evenly distributed to the outflow section 11A when passing through the diverter member 12, and then evenly flows out through the plurality of outflow outlets 111B, thereby ensuring the balance of the refrigerant during the diversion process. Moreover, the size and number of diverter holes 121 can be designed and adjusted according to actual needs to accommodate different flow and pressure requirements.

[0092] At the same time, the diversion component 10 can also include an inlet pipe 15 and multiple outflow pipes 16, one end of the inflow pipe 15 is connected to the inlet 111A, the other end of the inflow pipe 15 is connected to the electronic expansion valve 20, one end of the multiple outflow pipes 16 is connected to the multiple outflow ports 111B one by one, and the other end of the outflow pipe 16 is connected to the heat exchanger 30.

[0093] The inlet pipe 15 serves as the connection between the electronic expansion valve 20 and the main flow diversion pipe 11. The selection of its diameter and material requires comprehensive consideration of factors such as the refrigerant's flow rate, pressure, and flow characteristics. A well-designed pipe diameter ensures minimal flow resistance within the inlet pipe 15 while avoiding uneven flow distribution caused by excessively large or small diameters. Metal materials with excellent corrosion resistance and strength are also recommended to ensure long-term, stable performance.

[0094] Multiple outflow pipes 16 are responsible for transporting the refrigerant distributed in the main branch pipe 11 to the heat exchanger 30. Each outflow pipe 16 is precisely connected to the corresponding outlet 111B, ensuring that the refrigerant flows accurately into each channel of the heat exchanger 30. The length and direction of the outflow pipes 16 are also carefully designed to minimize bends and unnecessary length to reduce energy loss during the refrigerant transportation process. Furthermore, the connection between the outflow pipes 16 and the heat exchanger 30 is reliably sealed to prevent refrigerant leakage and ensure the normal operation of the entire HVAC system.

[0095] Through the coordinated cooperation between the inflow pipe 15, the diversion main pipe 11, the outflow pipe 16, the electronic expansion valve 20 and the heat exchanger 30, the diversion assembly 10 can efficiently and stably realize the diversion and transportation functions of the refrigerant. In the entire HVAC system, the diversion assembly 10 plays a key connecting role, ensuring that the refrigerant can be evenly distributed to various parts of the heat exchanger 30 in accordance with the design requirements of the system, thereby achieving efficient heat exchange and providing a stable and comfortable temperature environment indoors. At the same time, the simple and reasonable structural design makes the diversion assembly 10 have good maintainability and reliability in actual application, further improving the performance and service life of the entire HVAC system.

[0096] Based on the above embodiment, a diverter main pipe 11 having an inlet 111A and multiple outlets 111B provided on the sidewalls is employed, as is a diverter member 12 disposed within the diverter main pipe 11. The diverter member 12 has multiple diverter holes 121, which separate the diverter main pipe 11 into an inflow section 11B and an outflow section 11A. The inlet 111A communicates with the inflow section 11B, and the multiple outlets 111B communicate with the outflow section 11A. During diversion, the refrigerant enters the inflow section 11B from the inlet 111A, is evenly distributed to the outflow section 11A through the diverter holes 121 on the diverter member 12, and then flows evenly to the multiple outlets 111B provided on the sidewalls. Furthermore, the layout of the outlets 111B on the same side allows the diverter assembly 10 to connect to the various channels of the indoor unit 1, ensuring a more centralized and orderly routing of the connecting pipes. This further reduces connection complexity and the possibility of pipe crossovers, reducing piping usage and making the overall structure more compact. In addition, the adjacent inlets 111A and outlets 111B are arranged around the circumference of the diversion main pipe 11, so that when performing the takeover operation, the staff can complete the connection work of the inlet 111A and multiple outlets 111B in adjacent areas at the same time, without the need to frequently move between different positions around the diversion main pipe 11 or adjust the operating angle, further improving the takeover efficiency and reducing the difficulty of operation.

[0097] This method of diverting the flow through the diverter hole 121 greatly ensures the consistency of the diversion, overcoming the problem of uneven diversion in traditional capillary distributors. Moreover, the diverter member 12 is directly arranged in the diverter main pipe 11, which simplifies the internal structure of the diverter assembly 10, eliminates the need for complex components and connections, and avoids a significant increase in piping. This not only optimizes the overall structure of the diverter assembly 10 and reduces the requirements for pipe material consumption, processing accuracy, and bending process during the manufacturing process, but also reduces the difficulty of assembly operations, eliminating the need for staff to spend excessive time and energy on component connection and installation, thereby reducing the manufacturing difficulty of the diverter assembly 10 and saving production costs.

[0098] Reference Figures 3 to 5 In some embodiments, multiple outlets 111B are arranged sequentially along the axial direction of the main flow diversion tube 11. Analyzing the refrigerant flow path, the refrigerant enters the inflow section 11B of the main flow diversion tube 11 through the inflow inlet 111A. The axially arranged outlets 111B guide the refrigerant in an orderly manner within the inflow section 11B, passing through the diversion holes 121, entering the outflow section 11A, and then exiting through the corresponding outlets 111B. This flow path maintains the orderly flow of the refrigerant, reduces local pressure deviations caused by flow disturbances, and ensures uniform refrigerant distribution.

[0099] Furthermore, the centerline connecting the multiple outlets 111B is parallel to the central axis of the main flow distribution pipe 11. This arrangement makes drilling the main flow distribution pipe 11 easier to manufacture, reducing the difficulty of controlling machining precision compared to more complex arrangements and lowering production costs. During assembly, the installation and positioning of the outlet pipe 16 connected to the outlets 111B are simplified, reducing the chance of assembly errors and improving production efficiency.

[0100] Reference Figures 5 to 7 In some embodiments, the inner wall of the diverter main pipe 11 is provided with one of the mounting protrusion 1111 and the card groove 122, and the outer wall of the diverter member 12 is provided with the other of the mounting protrusion 1111 and the card groove 122. The diverter member 12 is fixed in the diverter main pipe 11 by snap-fitting with the mounting protrusion 1111 through the card groove 122. This design has obvious advantages during installation. When the diverter member 12 needs to be installed in the diverter main pipe 11, the staff only needs to align the card groove 122 on the outer wall of the diverter member 12 with the mounting protrusion 1111 on the inner wall of the diverter main pipe 11, or vice versa, and the initial positioning of the two can be completed with a simple operation. The snap-fitting process does not require additional complex tools, which greatly saves installation time. During use, the snap-fit ​​structure is tight and stable, which can effectively prevent the diverter member 12 from shaking and displacing in the diverter main pipe 11, ensuring that the diverter hole 121 is always in the correct position, and ensuring the accuracy and stability of the refrigerant diversion. During the maintenance phase, if the diversion component 12 needs to be disassembled for inspection or replacement, the reverse operation can be easily separated, reducing the difficulty and cost of maintenance, and effectively ensuring the long-term stable operation of the diversion component 10 and even the entire HVAC system.

[0101] Furthermore, mounting protrusions 1111 are arranged circumferentially along the inner wall of the main flow diversion tube 11. This greatly enhances the stability of the diverter member 12 during installation. When the diverter member 12 is installed into the main flow diversion tube 11, the circumferentially distributed mounting protrusions 1111 provide uniform support for the diverter member 12, preventing installation deviation caused by localized uneven force.

[0102] Optionally, the retaining groove 122 is annularly arranged along the outer circumference of the diverter member 12. This design of the annular retaining groove 122 allows for smooth engagement of the diverter member 12 with the mounting protrusion 1111 regardless of the angle from which it is aligned, significantly improving installation efficiency. During use, the annular retaining groove 122 tightly engages the circumferential mounting protrusion 1111, preventing the diverter member 12 from shaking in all directions, ensuring that the diverter hole 121 remains in a constant position, and precisely controlling the refrigerant diversion.

[0103] In some embodiments, a plurality of diverter holes 121 are arranged circumferentially along the central axis of the diverter main pipe 11. From the perspective of refrigerant flow, after the refrigerant enters the inflow section 11B from the inlet 111A, the circumferentially distributed diverter holes 121 can allow the refrigerant to diffuse in all directions toward the outflow section 11A in the diverter main pipe 11. Compared with other distribution methods, this arrangement avoids the situation where the refrigerant concentrates on flowing to the diverter holes 121 on one side, prompting the refrigerant to be more evenly distributed to the outflow section 11A, and then stably flows out from multiple outlets 111B, greatly improving the balance of the refrigerant diversion. In terms of processing and manufacturing, the diverter holes 121 are arranged circumferentially along the central axis, which facilitates the use of automated processing equipment to perform precise drilling based on a circumferential reference, thereby improving processing efficiency and accuracy, while also reducing processing difficulty. From the perspective of system operation, the uniform refrigerant diversion enables all parts of the heat exchanger 30 to fully and evenly participate in heat exchange, effectively avoiding local overheating or overcooling, and improving the overall heat exchange efficiency of the heat exchanger 30, thereby ensuring the stable and efficient operation of the HVAC system and creating a more comfortable indoor environment for users.

[0104] Reference Figure 7 In some embodiments, the diversion assembly 10 further includes a filter 13, which is disposed in the diversion main pipe 11 and between the inlet 111A and the diversion plate. That is, when the refrigerant medium enters the diversion main pipe 11 from the inlet 111A, it will first flow through the filter 13. The internal structure of the filter 13 is fine, and its filter screen or filter material can effectively intercept tiny particles, impurities, etc. mixed in the refrigerant medium. The refrigerant circulates in the HVAC system. If it contains impurities, it will adhere to and accumulate on the surface of the heat exchanger 30, reducing the heat conduction efficiency of the heat exchanger 30, thereby affecting the overall heat exchange effect. At the same time, once impurities enter the diversion hole 121 of the diversion component 12, it is very easy to cause the diversion hole 121 to be blocked, resulting in uneven diversion of the refrigerant, seriously affecting the diversion effect of the diversion component 12. The provision of the filter 13 in the diversion main pipe 11 cleverly solves these problems. On the one hand, it ensures that the refrigerant entering the heat exchanger 30 is clean and maintains good heat exchange efficiency. On the other hand, the filter element 13 crushes large bubbles into small bubbles and can also reduce the swirl intensity of the refrigerant medium at the bottom of the diversion main pipe 11. The above two functions have the effect of reducing refrigerant noise. In addition, traditional practices often require a separate filter to be installed before the inlet 111A. Now, the filter element 13 is integrated into the diversion main pipe 11, eliminating the need for an additional pre-filter. This not only reduces the cost of purchasing the filter, but also avoids the need for additional space, making the diversion assembly 10 more compact. During actual installation, whether in a narrow space or in an environment with strict requirements on the installation layout, installation can be completed more conveniently, improving the applicability and practicality of the diversion assembly 10.

[0105] Furthermore, the filter element 13 can be fixed to the inner wall of the branch main pipe 11 by interference fit. This fixing method does not require additional fixing accessories, which simplifies the installation process. At the same time, the tight fit effectively prevents the filter from being displaced or shaken under the impact of the refrigerant flow, ensuring the accuracy of the filtering position. During use, the sealing effect formed by the interference fit prevents the refrigerant from bypassing the gap between the filter element 13 and the pipe wall, ensuring that all refrigerants are filtered by the filter element 13. The filter element 13 can be in the form of a filter screen. The material of the filter screen is usually corrosion-resistant and high-strength metal wire or synthetic fiber. Its fine mesh structure can efficiently intercept impurity particles in the refrigerant, and has good deformation resistance. It can maintain stable filtering performance under the impact of high-speed refrigerant flow.

[0106] Reference Figure 6 In some embodiments, the diversion main pipe 11 includes a pipe body 111, a first end cap 112, and a second end cap 113. The pipe body 111 has an inlet 111A and an outlet 111B. The diversion member 12 is connected to the pipe body 111. The first end cap 112 is connected to and blocks the end of the pipe body 111 close to the inlet 111A. The second end cap 113 is connected to and blocks the end of the pipe body 111 away from the first end cap 112. Among them, the pipe body 111 serves as the main channel for the flow of refrigerant. Its material and structural design must take into account corrosion resistance, pressure bearing capacity, and the smoothness of the internal flow channel. The first end cap 112 is tightly connected to the end of the pipe body 111 close to the inlet 111A, effectively blocking the port, preventing refrigerant leakage, and ensuring that the refrigerant flows smoothly into the pipe body 111. The second end cap 113 is also firmly connected to the other end of the pipe body 111, sealing the pipe body 111, maintaining internal pressure stability, and preventing external impurities from entering and interfering with the refrigerant diversion. This structure, consisting of the pipe body 111 and end caps, facilitates ease of operation during production, installation, and maintenance. During production, each component can be processed and reassembled separately, improving production efficiency. During installation, the clear structure facilitates positioning and connection. During maintenance, removing the end caps allows for easy inspection, cleaning, or replacement of the diverter components 12 within the pipe body 111. This ensures the long-term stable operation of the diverter main pipe 11 and, ultimately, the entire diverter assembly 10, providing solid support for reliable HVAC system energy supply.

[0107] It should be noted that when the refrigerant flows within the tube body 111, swirl is very likely to occur due to factors such as the internal flow channel structure of the tube body 111 and the speed and angle at which the refrigerant enters. This swirl makes the refrigerant flow state in the tube complex and turbulent, and the collision and friction between refrigerant molecules increase, thereby causing additional vibration and generating noise, which affects the quietness and stability of the entire system.

[0108] In order to solve the above problems, refer to Figures 5 to 7In one embodiment of the present application, the diversion assembly 10 further includes a porous medium member 14, which is fixed to the diversion main pipe 11 and located in the inflow section 11B to block the flow of the refrigerant medium. Among them, the porous medium member 14 is generally made of metal material, most commonly sintered copper or pressed and formed by a stainless steel filter. The porous medium member 14 made of sintered copper has a complex and interconnected micro-pore structure formed inside due to its unique sintering process. This structure has good strength and corrosion resistance, can withstand the impact of high-speed flow of refrigerant, and is not easily damaged during long-term use. The porous medium member 14 pressed and formed by the stainless steel filter takes advantage of the high strength and corrosion resistance of stainless steel and forms dense pores in the porous medium member 14 through a special pressing process. When the refrigerant flows into the inflow section 11B of the shunt main pipe 11 at high speed from the inlet 111A, these dense micropores made of metal material can effectively break up the high-speed flow of the refrigerant, decompose its large stream into many small streams, and change the flow pattern of the refrigerant. In this process, the kinetic energy of the refrigerant is dispersed and consumed, and the flow velocity is greatly reduced, thereby reducing the turbulence and vibration caused by the high-speed flow, thereby reducing the swirl phenomenon, so that the noise is effectively reduced. The porous medium member 14 is set in the inflow section 11B because the refrigerant has just entered the shunt main pipe 11 here, with the fastest flow rate and the highest energy. Blocking here can control the noise generation from the source. At the same time, the porous medium member 14 made of metal material will not excessively affect the subsequent diversion and transportation of the refrigerant, and can still ensure that the refrigerant flows evenly to the outflow section 11A through the diversion hole 121 of the diversion component 12, ultimately achieving noise reduction while not interfering with the normal refrigerant distribution function of the diversion component 10, ensuring the stable operation of the HVAC system in a low-noise environment.

[0109] Furthermore, the porous medium member 14 extends from the first end cover 112 in the direction of the second end cover 113. This arrangement enables the porous medium member 14 to effectively block the refrigerant as soon as it enters the diversion main pipe 11. When the refrigerant enters from the inlet 111A, since the porous medium member 14 extends along the flow direction of the refrigerant, its blocking effect on the refrigerant is gradual and continuous, which helps to maintain the stability of the refrigerant flow in the inflow section 11B and avoid problems such as sudden pressure changes or uneven flow caused by local excessive blockage. In this process, the refrigerant medium gradually consumes kinetic energy over a longer path, so that the turbulence and vibration generated by high-speed flow are more fully suppressed, thereby further enhancing the noise reduction effect.

[0110] Reference Figures 5 to 7In one embodiment, the porous medium member 14 is a medium tube, and the outer peripheral wall of the medium tube is in a stop-and-go fit with the inner wall of the tube body 111, avoiding the inflow port 111A. The stop-and-go fit between the outer peripheral wall of the medium tube and the inner wall of the tube body 111 ensures that the medium tube is securely installed in the branch main pipe 11. When the refrigerant enters the branch main pipe 11 from the inflow port 111A, this tight fit prevents the refrigerant from bypassing the gap between the medium tube and the tube body 111, so that the refrigerant can only flow through the pores of the medium tube, reducing the vortex phenomenon on the inner wall of the tube body 111. In this way, the medium tube can fully exert its blocking effect on the flow of the refrigerant, decomposing large streams of refrigerant into small streams, effectively reducing the flow rate of the refrigerant, reducing turbulence and vibration, and thus reducing noise.

[0111] Furthermore, the medium tube extends from the first end cover 112 to between the diverter member 12 and the inlet 111A. The medium tube has a channel 14A, which is connected to the diverter hole 121 of the diverter member 12. The medium tube is provided with a through hole 1411 that passes through two opposite surfaces, and the through hole 1411 is connected to the channel 14A and the inlet 111A. Among them, this structural design plays a key role in the flow and noise reduction of the refrigerant. When the refrigerant enters the diverter main pipe 11 from the inlet 111A, it will enter the channel 14A of the medium tube through the through hole 1411. The arrangement of the medium tube extending from the first end cover 112 to between the diverter member 12 and the inlet 111A allows the refrigerant to fully complete the deceleration and noise reduction process in the medium tube before entering the diverter member 12. This process allows the refrigerant to flow to the diverter member 12 in a relatively stable state, which is conducive to the diverter member 12 to distribute the refrigerant more evenly. Moreover, the channel 14A is connected to the diversion hole 121, ensuring that the refrigerant after noise reduction treatment can flow out smoothly from the diversion hole 121, enter the outflow section 11A, and then be transported to the heat exchanger 30 and other subsequent components through the outflow port 111B, thereby ensuring the normal operation of the entire diversion assembly 10 and improving the performance and stability of the HVAC system.

[0112] Furthermore, the medium pipe includes a cylinder 141 and an end plate 142, and the end plate 142 is connected to and blocks one end of the cylinder 141 to enclose a channel 14A. The cylinder 141 is provided with a through hole 1411, and the outer peripheral wall of the cylinder 141 is abutted against the inner wall of the tube body 111, and the end plate 142 abuts and covers the first end cover 112. Among them, because the cylinder 141 has a special porous structure, the original high-speed large stream of refrigerant is broken down into countless small streams, the flow rate is significantly reduced, and a large amount of kinetic energy is consumed. In this process, the turbulence and vibration generated by the refrigerant flow are greatly reduced, thereby effectively reducing noise and realizing the noise reduction function of the diverter component 10. The end plate 142 is firmly connected to and blocks one end of the cylinder 141, and together with the cylinder 141, encloses a closed channel 14A. The existence of this channel 14A not only provides a stable flow space for the refrigerant, but also ensures that the refrigerant flows according to the preset path in the channel 14A, preventing refrigerant leakage. End plate 142 abuts and covers first end cap 112. This connection offers multiple advantages. First, it reliably positions and secures the medium pipe within main flow divider 11, ensuring it remains stable despite the impact of refrigerant flow, preventing displacement or shaking. Second, this tight connection helps create a relatively enclosed space, further stabilizing the refrigerant flow and enhancing noise reduction.

[0113] Optionally, the thickness d of the medium tube satisfies the following conditions: 1mm≤d≤3mm. If the thickness is less than 1mm, the medium tube is insufficiently strong and cannot withstand the impact of the high-speed flow of refrigerant in the shunt main pipe 11. It is prone to breakage, deformation, and other problems, resulting in refrigerant leakage. This not only reduces the noise reduction effect, but also may seriously affect the operation of the entire shunt assembly 10 and the HVAC system. Conversely, when the thickness exceeds 3mm, although the strength of the medium tube can be enhanced, the material cost will increase. At the same time, due to the excessive thickness of the medium tube, its internal pore structure will be squeezed to a certain extent, resulting in increased resistance to the flow of refrigerant in the pores, affecting the normal flow of refrigerant through the medium tube, thereby interfering with the shunt assembly 10's shunt effect on the refrigerant and reducing system operating efficiency. Controlling the thickness d between 1mm and 3mm can ensure that the medium tube has sufficient strength to stably withstand the impact of the refrigerant and maintain structural integrity, while also ensuring that its internal pore structure is reasonable, allowing the refrigerant to pass smoothly, achieving good noise reduction function, and ensuring the efficient and stable operation of the shunt assembly 10, while taking into account the balance between performance and cost.

[0114] Reference Figure 8In another embodiment, the porous medium member 14 is arranged in a block shape. The porous medium member 14 is connected to the first end cap 112 and is spaced apart from the inner wall of the tube body 111, avoiding the inlet 111A. In this way, when the refrigerant flows into the branch main pipe 11 at a high speed from the inlet 111A, the refrigerant can enter the tube body 111 smoothly and unimpeded due to the position and layout of the porous medium member 14. Then, the refrigerant will directly impact the block-shaped porous medium member 14. There is a rich and intricate micropore structure inside the porous medium member 14. When the refrigerant comes into contact with it, the large, high-speed refrigerant flow will be quickly divided by these micropores and then decomposed into many small streams. This process not only greatly reduces the flow rate of the refrigerant, but also has a significant impact on the flow direction of the refrigerant. In the absence of the porous medium member 14, the refrigerant flowing in the tube body 111 is prone to swirl due to various factors. The presence of porous media element 14 causes the refrigerant's direction of movement to be constantly altered and adjusted as it flows through the pores. Guided by the pores, numerous small streams flow in a relatively orderly manner, effectively breaking up any swirls that might otherwise form. Because swirls can cause collisions and increased friction between refrigerant molecules, a major source of noise, the optimization of the refrigerant flow state by porous media element 14 significantly reduces swirls, leading to a significant reduction in noise.

[0115] Furthermore, the porous medium member 14 extends from one end of the first end cover 112 to between the diverter member 12 and the inlet 111A. When the refrigerant rushes into the diverter main pipe 11 at high speed from the inlet 111A, since the porous medium member 14 extends to between the diverter member 12 and the inlet 111A, the extended setting of the porous medium member 14 allows the refrigerant to flow in a relatively orderly state before reaching the diverter member 12, reducing the generation of turbulence and swirl. In addition, this extended setting also provides more sufficient buffering and adjustment space for the refrigerant before entering the diverter member 12. After passing through the action of the porous medium member 14, the refrigerant flows into the diverter hole 121 of the diverter member 12 in a more stable and uniform state, which helps the diverter member 12 to distribute the refrigerant more accurately and improve the working efficiency and stability of the entire diverter assembly 10. In terms of installation and maintenance, although the porous medium member 14 extends to a specific position, since it is only connected to the first end cover 112, the staff can still disassemble, inspect and replace it relatively conveniently, ensuring that it is always in good working condition, continuously and effectively reducing the refrigerant vortex, reducing noise, and ensuring the stable operation of the HVAC system.

[0116] Reference Figure 8Optionally, the cross section of the porous medium member 14 gradually decreases from the first end cover 112 in the direction close to the diverter member 12. In this way, the porous medium member 14 is set in a conical shape as a whole. If a cylindrical porous medium member 14 is used, it is very likely that the porous medium member 14 is too close to the inlet 111A or even directly stuck to it due to factors such as installation position deviation. In actual working conditions, the refrigerant often carries various impurities. Once these impurities accumulate on the surface of the porous medium, it is easy to cause blockage. If the porous medium member 14 fits tightly with the inlet 111A, once the porous medium member 14 is blocked, the airflow will not be able to pass through and the entire system will be paralyzed. Designing the porous medium member 14 to be conical can effectively avoid this risk. As the cross section of the porous medium member 14 gradually decreases in the direction of the diverter member 12, a certain distance is naturally formed between it and the lower inlet 111A. In this way, even if impurities in the refrigerant accumulate on the surface of the porous medium, causing blockage in some areas, the gap between inlet 111A and porous medium member 14 allows airflow to bypass the blocked area and pass through other unblocked pores or spaces, maintaining basic system operation. This not only greatly improves the system's anti-clogging ability and ensures the stability of HVAC system operation, but also reduces frequent maintenance shutdowns due to impurity blockage, reduces maintenance costs, and extends the system's service life.

[0117] Optionally, the minimum spacing D between the outer wall of the porous medium member 14 and the inner wall of the tube body 111 satisfies the following: 2mm≤D≤3mm. This spacing not only ensures smooth refrigerant flow when the refrigerant flows within the tube body 111, but also stabilizes the refrigerant flow through channel constraints, effectively suppressing the generation of vortexes. It also reduces high-frequency vibrations between the refrigerant and the tube wall and the porous medium member 14 during flow, lowering noise levels. It also allows the refrigerant to carry impurities during flow, preventing impurities from accumulating in confined spaces or forming vortices due to excessive spacing. This improves system reliability and stability, comprehensively ensuring the efficient operation of the diversion assembly 10 and facilitating stable operation of the HVAC system.

[0118] Combined with reference Figure 9 In another embodiment for reducing swirl noise, the branch main pipe 11 is provided with an uneven portion 1112 on the pipe wall at least at the inflow section 11B to disturb the flow of the refrigerant.

[0119] It is understandable that when the refrigerant medium flows into the inflow section 11B of the shunt main pipe 11 at high speed from the inlet 111A, the refrigerant is very likely to form a concentrated and high-speed flow situation in the conventional smooth pipe wall, which creates conditions for the generation of vortex. The uneven part 1112 of the pipe wall of the inflow section 11B of the shunt main pipe 11 becomes the key to changing this situation. These uneven parts 1112 can take on a variety of forms, such as regularly arranged tiny protrusions, staggered depressions or wrinkles of a specific shape. When the high-speed flowing refrigerant contacts these uneven parts 1112, the originally neat and orderly flow beam is instantly disrupted. The refrigerant flow is decomposed into many small flow beams with different directions and speeds. They intertwine and collide with each other, forming a complex and mutually restrained flow state. In this process, the vortex that may have been formed is effectively broken up and suppressed. Because the interaction of these small flow beams makes the flow of the refrigerant more dispersed and uniform, it reduces the high-speed rotation and vortex phenomenon in local areas. At the same time, this turbulent flow also significantly consumes the refrigerant's kinetic energy, reducing the overall refrigerant flow rate. Since the generation of noise is closely related to the high-speed flow of the refrigerant and the turbulence it causes, the reduction in flow rate and the reduction in swirl directly leads to the reduction of turbulence and vibration, thereby reducing the generation of noise from the root.

[0120] By providing an uneven surface 1112 on the wall of the inflow section 11B of the main flow diversion pipe 11 to disrupt the flow, this approach not only simplifies the structure and eliminates the need for complex noise reduction and anti-swirl devices, but also effectively reduces swirl and noise without affecting the basic functionality of the main flow diversion pipe 11. This innovative design provides an economical, practical, and effective solution for improving the performance and stability of the diversion assembly 10 and the operating environment of the entire HVAC system.

[0121] Furthermore, an uneven portion 1112 is formed on the inner wall surface of the tube body 111. In the manufacturing process of the tube body 111, a special mold is used for extrusion or stamping, so that the inner wall surface presents regular or irregular convex or concave shapes. Alternatively, surface treatment techniques such as etching and laser processing are used to form a texture or pattern of a specific shape on the inner wall surface, thereby forming the uneven portion 1112. In addition, the design of forming the uneven portion 1112 on the inner wall surface of the tube body 111 has the advantages of compact structure and easy installation compared to adding additional flow-disturbing components in the tube. It reduces the connection and assembly links between components, reduces the risk of leakage, and also facilitates the cleaning and maintenance of the diversion main pipe 11, ensuring its long-term and stable working performance.

[0122] Furthermore, the uneven portion 1112 is arranged along the circumference of the inner wall of the tube body 111. Since the uneven portion 1112 is distributed along the circumference of the inner wall, the refrigerant will be affected by the turbulent flow in the entire circumferential direction. This means that no matter what the initial flow direction of the refrigerant in the tube is, it will contact and interact with the circumferentially arranged uneven portion 1112. The vortex that may have formed in a certain local area will not be able to continue to develop and grow due to the interference of the circumferential uneven portion 1112. The refrigerant flow beam is continuously divided and disrupted by the circumferential uneven portion 1112, forming countless small flow beams with different directions. These flow beams are intertwined and collided with each other in the tube, making the flow of the refrigerant more evenly distributed over the entire cross-section of the tube body 111.

[0123] In terms of noise reduction, the circumferentially arranged uneven portion 1112 can more comprehensively weaken the turbulence and vibration generated by the flow of refrigerant. Since the flow of the refrigerant in the entire circumferential direction is disturbed, its kinetic energy is more fully consumed, and the flow rate is reduced more significantly. From the perspective of manufacturing and installation, setting the uneven portion 1112 along the circumference of the inner wall of the tube body 111 has certain feasibility and convenience in terms of process. Whether using mold extrusion, stamping, or etching, laser processing and other processes, the circumferential uneven structure can be achieved relatively easily. Moreover, this setting method will not increase the manufacturing difficulty and cost too much, and it is also convenient for the inspection and cleaning of the tube body 111 during the subsequent maintenance process, ensuring that the uneven portion 1112 always maintains a good turbulence effect and maintains the stable performance of the diversion main pipe 11.

[0124] Combined with reference Figure 9 Optionally, the uneven portion 1112 extends from between the diverter member 12 and the inlet 111A to the first end cap 112. When the refrigerant medium rushes into the diverter main pipe 11 at high speed from the inlet 111A, the uneven portion 1112 plays a disruptive role throughout the critical path before reaching the diverter member 12. Starting from between the diverter member 12 and the inlet 111A, the high-speed and concentrated flow beam of the refrigerant just after entering the tube body 111 immediately contacts the uneven portion 1112. Since the uneven portion 1112 is arranged circumferentially along the inner wall of the tube body 111, the refrigerant is subjected to all-round interference in the circumferential direction, and the flow beam is quickly broken up into many small tributaries with different directions. As the refrigerant continues to flow toward the first end cap 112, the uneven portion 1112 continuously adjusts the flow state of the refrigerant along the entire extension path. This makes the vortex that may have gradually developed and grown over a long distance always in a suppressed state. The flow of refrigerant becomes more uniform and stable during this process, avoiding local flow rate abnormalities and increased turbulence caused by swirl.

[0125] In some embodiments, in conjunction with reference Figure 9Uneven portion 1112 extends from inflow section 11B to outflow section 11A. Once the refrigerant passes through diverter member 12 and enters outflow section 11A, uneven portion 1112 continues to play a crucial role. It further adjusts the refrigerant's flow direction and velocity distribution, preventing further swirl and turbulence within outflow section 11A due to changes in the pipe structure or other factors. Furthermore, thanks to this full-scale turbulence, the refrigerant's kinetic energy is fully dissipated, significantly reducing flow velocity and significantly lowering noise levels.

[0126] Furthermore, the tube body 111 is a threaded tube, and the uneven portion 1112 is the threaded structure of the inner wall of the threaded tube. From a manufacturing perspective, designing the tube body 111 as a threaded tube is a relatively mature and simple process. Through common thread processing methods, such as rolling, cutting, etc., the required threaded structure can be formed on the inner wall of the tube, without the need for additional complex manufacturing processes, thereby reducing production costs. In terms of maintenance, the threaded tube structure is relatively simple, without complex components and connections, and is not prone to failure. Moreover, the shape of the thread helps to discharge impurities, reduces the possibility of impurities accumulating in the tube, and reduces the difficulty and frequency of maintenance. Even when cleaning or maintenance is required, the threaded tube can be easily operated to ensure its long-term and stable operation. Designing the tube body 111 as a threaded tube and using the threaded structure of its inner wall as the uneven portion 1112 is a design solution that integrates functionality, economy and practicality, and provides strong guarantees for the performance improvement of the diversion main tube 11 and the stable operation of the system.

[0127] Reference Figures 10 to 12 In another embodiment of reducing the noise of swirl, a first guide structure is provided in the inflow section 11B, and the first guide structure is used to guide the refrigerant medium flowing in from the inlet 111A to the diverter component 12. Among them, as the refrigerant flows steadily to the diverter component 12 under the guidance of the first guide structure, the kinetic energy distribution during the flow process becomes more uniform. The pressure fluctuations that may have been caused by excessive local flow velocity are effectively alleviated, and the degree of turbulence and vibration is greatly reduced. Since the noise mainly comes from the high-speed flow of the refrigerant and the turbulence and vibration generated thereby, the first guide structure suppresses the generation of noise from the source by stabilizing the flow of the refrigerant and reducing the swirl. In addition, the first guide structure accurately guides the refrigerant to the diverter component 12, and can also improve the distribution efficiency of the refrigerant by the diverter component 12. The refrigerant enters the diverter component 12 in a stable and orderly state, so that the diverter component 12 can more evenly distribute the refrigerant to each branch, further improving the performance and stability of the entire diversion system.

[0128] Furthermore, at least a portion of the first end cap 112 is a first flow-guiding structure. This arrangement simplifies the internal structure of the diversion main pipe 11. Compared with the additional provision of independent flow-guiding components, this integrated design reduces the number of connections and assembly links between components, reduces the risk of leakage, and is also easier to manufacture and maintain. During the manufacturing process, the first end cap 112 and the first flow-guiding structure can be produced through a one-time molding process, thereby improving production efficiency and quality stability. During maintenance, staff can more conveniently inspect and clean the first end cap 112 to ensure the normal function of its flow-guiding function. At the same time, from the perspective of suppressing vortexes, this design avoids disordered collisions and swirling of the refrigerant in the inflow section 11B. Under the guiding action of the first end cap 112, the refrigerant forms a relatively stable and regular flow state, greatly reducing the probability of vortex generation. Vortices that may have been formed by the refrigerant directly impacting the pipe wall or in the corners are effectively eliminated under the reasonable guidance of the first end cap 112. The refrigerant moves relatively smoothly toward the diverter member 12, reducing localized high-speed rotation and turbulence, making the entire flow process more controllable. It's worth noting that, depending on the actual design requirements and application scenario, the entire first end cap 112 can also serve as the first diversion structure. This can further enhance the diversion effect, providing more comprehensive and effective guidance for the refrigerant flow, thereby better achieving the goals of suppressing swirl, reducing noise, and optimizing diversion.

[0129] Furthermore, first end cap 112 is inclined relative to the axial direction of tube body 111. This allows the refrigerant to flow more smoothly and effectively as it enters inlet section 11B of diverter main pipe 11 from inlet 111A. Because first end cap 112 partially serves as a first flow guide, its inclination allows the refrigerant to change direction more naturally along the inclined surface upon contact with first end cap 112, flowing smoothly toward diverter member 12.

[0130] Furthermore, first end cap 112 is tilted from a horizontal plane toward inlet 111A. Compared to other tilting arrangements, tilting from a horizontal plane toward inlet 111A reduces resistance to the refrigerant during flow, resulting in smoother flow. The tilted first end cap 112 allows the refrigerant to gradually adjust its flow direction, forming a more orderly, streamlined flow. The motion trajectory of the refrigerant molecules is more regular, reducing localized high-speed rotation and vortex phenomena, thereby effectively suppressing the generation of swirl.

[0131] Furthermore, the angle A between the first end cover 112 and the central axis of the tube body 111 satisfies: 30°≤A≤60°. When the refrigerant flows into the inflow section 11B of the diversion main pipe 11 from the inlet 111A and contacts the first end cover 112 which is tilted in this angle range, it can be properly guided and flow smoothly and efficiently to the diversion component 12. If the angle is too small, the force of guiding the refrigerant is poor, and the refrigerant may easily impact the pipe wall or cause local turbulence; if the angle is too large, the refrigerant flow direction changes too drastically, causing energy loss. In this angle range, the refrigerant flow is concentrated and orderly, greatly improving the uniformity and accuracy of the diversion. At the same time, this angle effectively breaks the disordered state of the refrigerant when it flows in, reduces the generation of vortices and swirls in the inflow section 11B, makes the refrigerant flow velocity evenly distributed, avoids local high-speed rotation and turbulence, enhances the controllability of the flow, and reduces the adverse effects of swirls on system performance. Furthermore, because swirl and turbulence are suppressed, violent collisions and friction between refrigerant molecules are reduced. Noise primarily stems from the disordered movement and vibration of the refrigerant. This angle ensures smooth and gentle refrigerant flow, significantly reducing vibration amplitude and frequency, achieving excellent noise reduction and creating a quiet operating environment for the system. This angle range is highly feasible in manufacturing and installation. It does not overly complicate mold manufacturing and the molding process, and it also facilitates precise position adjustment during installation, ensuring installation accuracy, connection security, and sealing. This reduces costs, improves production efficiency, and improves product quality. It is a high-quality solution derived from a comprehensive range of factors, effectively ensuring the stable and efficient operation of the HVAC system.

[0132] In another embodiment, the diverter assembly 10 further includes a first guide plate (not shown), which is detachably mounted in the diverter main pipe 11 and located in the inflow section 11B. The first guide plate is arranged to be inclined axially with respect to the tube body 111, and the first guide structure is the first guide plate. When the refrigerant enters the inflow section 11B from the inlet 111A, the inclined first guide plate changes the flow direction of the refrigerant, causing it to be guided to the diverter component 12 in an orderly manner along the inclined surface, thereby preventing the refrigerant from flowing disorderly in the inflow section 11B, reducing the generation of vortexes, and allowing the refrigerant to move toward the diverter component 12 in a concentrated and stable state, thereby improving the uniformity and accuracy of the diversion. In terms of reducing noise, the guidance of the refrigerant flow by the first guide plate reduces turbulence and vibration. Since the noise originates from the high-speed disordered movement and vibration of the refrigerant, it makes the refrigerant flow smoother, reduces the vibration amplitude and frequency, significantly reduces noise, and creates a quiet operating environment. Moreover, the detachable installation method facilitates maintenance and replacement of the first guide plate. During long-term use, the first guide plate may be affected by impurities or wear and tear. The staff can easily remove it for inspection, cleaning or replacement without large-scale disassembly and maintenance of the diversion main pipe 11, thereby reducing maintenance costs and time, improving system reliability and maintainability, and enhancing the overall performance and stability of the diversion component 10, thereby ensuring efficient operation of the HVAC system.

[0133] Reference Figures 10 to 12In some embodiments, the outflow section 11A is provided with a second flow-guiding structure, which is used to guide the refrigerant medium flowing through the diverter member 12 to the outflow outlet 111B. When the refrigerant enters the outflow section 11A after being diverted by the diverter member 12, its flow state is complex, and the flow rate may be uneven and the direction may be disordered. The second flow-guiding structure can be designed into a specific shape such as an arc or a spiral according to the actual working conditions and the pipeline layout to guide the refrigerant to flow in an orderly manner, so that it moves along a predetermined path and avoids collisions and vortices caused by irregular flow. This structure can effectively prevent the refrigerant from forming a vortex again in the outflow section 11A, because the refrigerant after passing through the diverter member 12 is prone to unstable flow due to pressure changes and channel conversion. The second flow-guiding structure makes the refrigerant flow more stable by adjusting the flow direction and flow rate, reducing the possibility of vortex. In terms of noise reduction, since the noise comes from the high-speed disordered flow and vibration of the refrigerant, this structure makes the refrigerant flow smoother, reduces flow rate mutations and vibration, and significantly reduces noise. Furthermore, it improves refrigerant outflow efficiency, precisely directing the refrigerant to outlet 111B, preventing refrigerant stagnation and blockage in outlet section 11A, and improving the efficiency of the entire diversion system. In practical applications, the second diversion structure must be constructed of high-strength, corrosion-resistant materials to withstand the impact of long-term refrigerant flow. Its structural design must also be easy to install and maintain, facilitating inspection and cleaning by staff, ensuring consistent flow diversion and stable operation of diversion assembly 10.

[0134] Furthermore, at least a portion of the second end cap 113 is a second flow-guiding structure. This arrangement simplifies the internal structure of the diversion main pipe 11. Compared with the additional provision of independent flow-guiding components, this integrated design reduces the connection and assembly links between components, reduces the risk of leakage, and is also convenient for manufacturing and maintenance. During the manufacturing process, the second end cap 113 and the second flow-guiding structure can be produced through a one-time molding process, thereby improving production efficiency and quality stability. During maintenance, staff can more conveniently inspect and clean the first end cap 112 to ensure the normal function of its flow-guiding function.

[0135] In another embodiment, the diverter assembly 10 further includes a second guide plate (not shown), which is detachably mounted in the tube body 111 and located in the outflow section 11A. The second guide plate is arranged to be inclined axially with respect to the tube body 111, and the second guide plate is a second guide structure. The inclined second guide plate can accurately change the flow direction of the refrigerant, so that the refrigerant is smoothly guided to the outflow outlet 111B along its inclined surface. The detachable feature provides convenience for subsequent maintenance and replacement. During long-term use, if the second guide plate is worn, clogged with impurities, etc., the staff can easily remove it for processing without the need for large-scale disassembly of the entire tube body 111. This not only reduces maintenance costs, but also shortens maintenance time, ensuring the continuous and stable operation of the diverter assembly 10. Whether the second end cover 113 is partially used as the second guide structure, or a detachable second guide plate is used as the second guide structure, it is to optimize the flow of the refrigerant in the outflow section 11A and improve the overall performance of the diverter assembly 10.

[0136] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0137] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A diversion component, applied to an indoor unit, characterized in that: The diversion component includes: A flow-dividing main pipe having an inlet and a plurality of outlets, wherein the plurality of outlets are provided on the same side of a sidewall of the flow-dividing main pipe, and the inlet is provided on a side of the flow-dividing main pipe adjacent to a side where the outlets are provided in a circumferential direction of the flow-dividing main pipe; and The diverter member is arranged in the diverter main pipe and divides the diverter main pipe into an inflow section and an outflow section arranged along the axial direction of the diverter main pipe. The diverter member has a plurality of diverter holes, which connect the inflow section and the outflow section. The inlet is connected to the inflow section, and the plurality of outlets are connected to the outflow section.

2. The flow diversion assembly according to claim 1, wherein: The plurality of flow outlets are arranged in sequence along the axial direction of the flow dividing main pipe.

3. The flow diversion assembly according to claim 2, wherein: A center line connecting the plurality of outflow ports is parallel to a central axis of the flow dividing main pipe.

4. The flow diversion assembly according to claim 1, wherein: The inner wall of the diversion main pipe is provided with one of a mounting protrusion and a slot, and the outer wall of the diversion component is provided with the other of the mounting protrusion and the slot. The diversion component is fixed in the diversion main pipe by engaging with the mounting protrusion through the slot.

5. The flow diversion assembly according to claim 4, characterized in that The mounting protrusion is arranged along the circumference of the inner wall of the diversion main pipe; And / or, the clamping groove is arranged in an annular shape along the outer circumference of the diverter component.

6. The flow diversion assembly according to claim 1, wherein: The plurality of diversion holes are arranged along the circumference of the central axis of the diversion main pipe.

7. The flow diversion assembly according to claim 1, wherein: It also includes a filter element, which is arranged in the diversion main pipe and located between the inlet and the diversion plate.

8. The flow diversion assembly according to any one of claims 1 to 7, characterized in that: The invention also comprises a porous medium member, which is fixed to the flow dividing main pipe and located in the inflow section to block the flow of the cold medium.

9. The flow diversion assembly according to claim 8, wherein: The shunt supervisor includes: a pipe body having the inlet and the outlet, wherein the flow dividing member is connected to the pipe body; a first end cap connected to and blocking an end of the tube body close to the inlet; and a second end cap, the second end cap being connected to and sealing an end of the tube body away from the first end cap; The porous medium member extends from the first end cap toward the second end cap.

10. The flow diversion assembly according to claim 9, wherein: The porous medium member is a medium tube, and the outer peripheral wall of the medium tube is in abutment with the inner wall of the tube body and avoids the inlet.

11. The flow diversion assembly according to claim 10, wherein: The medium pipe extends from the first end cover to between the flow dividing member and the inlet; The medium pipe has a channel, which is connected to the diversion hole of the diversion component. The medium pipe is provided with a through hole penetrating two opposite surfaces, and the through hole is connected to the channel and the inlet.

12. The flow diversion assembly according to claim 11, wherein: The medium pipe includes a cylinder and an end plate, wherein the end plate is connected to and blocks one end of the cylinder to enclose and form the channel; The cylinder is provided with the through hole, the outer peripheral wall of the cylinder is abutted against the inner wall of the tube body, and the end plate abuts against and covers the first end cover.

13. The flow diversion assembly according to claim 10, wherein: The thickness d of the medium tube satisfies: 1 mm ≤ d ≤ 3 mm.

14. The flow diversion assembly according to claim 9, wherein: The porous medium member is arranged in a block shape, is connected to the first end cover, and is spaced apart from the inner wall of the pipe body and avoids the inlet.

15. The flow diversion assembly according to claim 14, wherein: One end of the porous medium away from the first end cap extends between the flow dividing member and the inlet; And / or, the cross section of the porous medium gradually decreases from the first end cover in a direction close to the diverter member; And / or, a minimum distance D between the outer wall of the porous medium member and the inner wall of the pipe body satisfies: 2 mm ≤ D ≤ 3 mm.

16. The flow diversion assembly according to any one of claims 1 to 7, characterized in that: The branch main pipe is provided with an uneven portion at least on the pipe wall of the inflow section to disturb the flow of the refrigerant.

17. The flow diversion assembly according to claim 16, wherein: The shunt supervisor includes: a pipe body, the flow dividing member being connected to the pipe body, the pipe body having the inlet and the outlet; a first end cap connected to and blocking an end of the tube body close to the inlet; and a second end cap, the second end cap being connected to and sealing an end of the tube body away from the first end cap; An uneven portion is formed on the inner wall surface of the pipe body.

18. The flow diversion assembly according to claim 17, wherein: The uneven portion is arranged along the circumference of the inner wall of the pipe body; And / or, the uneven portion extends from between the diverting member and the inlet to the first end cover.

19. The flow diversion assembly according to claim 17, wherein: The uneven portion extends from the inflow section to the outflow section.

20. The flow diversion assembly according to claim 19, wherein: The pipe body is a threaded pipe, and the uneven portion is a threaded structure on the inner wall of the threaded pipe.

21. The flow diversion assembly according to any one of claims 1 to 7, characterized in that: The inflow section is provided with a first flow guiding structure, and the first flow guiding structure is used to guide the refrigerant medium flowing in from the inlet to the diversion component.

22. The flow diversion assembly according to claim 21, wherein: The shunt supervisor includes: a pipe body, the flow dividing member being connected to the pipe body, the pipe body having the inlet and the outlet; a first end cap connected to and blocking an end of the tube body close to the inlet; and a second end cap, the second end cap being connected to and sealing an end of the tube body away from the first end cap; Wherein, at least a portion of the first end cover is the first flow-guiding structure.

23. The flow diversion assembly according to claim 22, wherein: The first end cover is arranged to be inclined in the axial direction of the tube body.

24. The flow diversion assembly according to claim 23, wherein: The first end cover is tilted from a horizontal plane in a direction close to the inlet.

25. The flow diversion assembly according to claim 24, wherein: An included angle A between the first end cover and the central axis of the tube body satisfies: 30°≤A≤60°.

26. The flow diversion assembly according to claim 22, wherein: The diversion assembly also includes a first guide plate, which is detachably installed in the diversion main pipe and located in the inflow section. The first guide plate is inclined to the axial direction of the pipe body, and the first guide structure is the first guide plate.

27. The flow diversion assembly according to claim 22, wherein: The outflow section is provided with a second flow guiding structure, and the second flow guiding structure is used to guide the coolant medium flowing through the diversion component to the outflow port.

28. The flow diversion assembly according to claim 27, wherein: At least a portion of the second end cover is the second flow guide structure; Alternatively, the diversion assembly further includes a second guide plate, which is detachably installed in the tube body and located in the outflow section. The second guide plate is inclined relative to the axial direction of the tube body, and the second guide plate is the second guide structure.

29. An indoor unit, characterized in that: include: heat exchangers; Electronic expansion valve; as well as The flow diversion assembly according to any one of claims 1 to 28; The diversion component also includes an inlet pipe and multiple outflow pipes, one end of the inlet pipe is connected to the inlet, the other end of the inlet pipe is connected to the electronic expansion valve, one end of the multiple outflow pipes is connected to the multiple outflow ports in a one-to-one correspondence, and the other end of the outflow pipe is connected to the heat exchanger.

30. A HVAC system, characterized in that: include: Outdoor unit; and The indoor unit according to claim 29, wherein the indoor unit and the outdoor unit form a refrigerant cycle.

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