Flow distribution assembly and heating, ventilation and air conditioning apparatus

Abstract

The present application specifically relates to a flow distribution assembly and a heating, ventilation and air conditioning apparatus. The flow distribution assembly is used for the heating, ventilation and air conditioning apparatus, and comprises a housing, a plate body, first connecting pipes, and an inlet pipe. The housing is provided with an inflow hole and an expansion chamber in communication with the inflow hole. The side of the expansion chamber facing away from the inflow hole is provided with an opening, and the inner diameter of the expansion chamber gradually increases in a direction from the inflow hole to the opening. The plate body is arranged on the housing and blocks the opening, and the plate body is provided with a plurality of flow distribution holes. The first connecting pipes are connected to and arranged on the plate body, and each flow distribution hole is correspondingly in communication with one first connecting pipe. The inlet pipe is connected to and arranged on the housing and communicates with the inflow hole. The inlet pipe cooperates with the housing to form an entry chamber, a flow stabilization chamber and the expansion chamber that communicate with each other in sequence. The inner diameter of the entry chamber is greater than the inner diameter of the flow stabilization chamber, and the inner diameter of the flow stabilization chamber is less than or equal to the diameter of the inflow hole. By configuring the flow distribution assembly to be of a split structure, the flow distribution assembly of the present application can effectively reduce the difficulty of machining a distributor and improve the feasibility of a flow distribution performance design.

Description

Distribution components and HVAC equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411464247.9, entitled "Shunting Components and HVAC Equipment", filed on October 18, 2024, and Chinese Patent Application No. 202422535157.6, entitled "Shunting Components and HVAC Equipment", both filed on October 18, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, specifically to a diversion component and HVAC equipment. Background Technology

[0004] HVAC equipment typically uses distributors and capillary tubes to distribute two-phase refrigerant on demand, thereby achieving a high degree of matching between refrigerant flow and heat exchange field. The distributor initially mixes the two-phase refrigerant to achieve uniform mixing within the dispensing chamber, and then the capillary tubes are used at the downstream end to adjust the flow rate.

[0005] Currently, distributors are mostly made of brass through integrated machining, which is costly. Moreover, their performance design is often limited by the machining process and cannot achieve optimal performance. In addition, in terms of regulation, capillary tubes of different diameters or lengths are often used to distribute the refrigerant. Capillary tubes are highly flexible, making welding and assembly difficult, and their structural form has a significant impact on refrigerant distribution, resulting in poor product consistency. Summary of the Invention

[0006] The purpose of this application is to at least solve the problems of high manufacturing cost and poor performance of existing dispensers. This purpose is achieved through the following technical solution:

[0007] The first aspect of this application discloses a shunt assembly for HVAC equipment, comprising:

[0008] A housing having an inlet hole and an expansion cavity communicating with the inlet hole, the expansion cavity having an opening on the side opposite to the inlet hole, and the inner diameter of the expansion cavity gradually increasing from the inlet hole to the opening;

[0009] A plate body, which is disposed on the housing and seals the opening, has multiple diversion holes;

[0010] The first connecting pipe is a plurality of the first connecting pipes, which are respectively connected to the plate body, and each of the diversion holes is connected to one of the first connecting pipes.

[0011] An inlet pipe is connected to the housing and communicates with the inflow hole. The inlet pipe and the housing cooperate to form an injection cavity, a flow stabilizing cavity and an expansion cavity that are connected in sequence. The inner diameter of the injection cavity is larger than the inner diameter of the flow stabilizing cavity, and the inner diameter of the flow stabilizing cavity is smaller than or equal to the diameter of the inflow hole.

[0012] The flow splitting assembly described in this application includes a housing, a plate, a first connecting pipe, and an inlet pipe. By placing the plate on the housing, and connecting the plate and the housing to the first connecting pipe and the inlet pipe respectively to form a flow splitting structure, the processing difficulty of the distributor can be effectively reduced, thereby reducing the manufacturing cost of the distributor. At the same time, setting the flow splitting assembly as a split structure helps to improve the feasibility of the flow splitting performance design, thereby further optimizing the performance of the flow splitting assembly.

[0013] In addition, the shunt component according to this application may also have the following additional technical features:

[0014] In some embodiments of this application, the housing is provided with a first insertion part, the first insertion part defines the inflow hole, and the inlet pipe is adapted to and connected to the first insertion part.

[0015] In some embodiments of this application, an insertion section is provided at one end of the inlet pipe facing the housing, and at least a portion of the insertion section passes through the inflow hole and extends into the interior of the expansion cavity;

[0016] Along the direction of the inlet pipe facing the housing, the first end of the insertion section is connected to the injection cavity, the second end of the insertion section is closed and located inside the expansion cavity, and along the circumference of the insertion section, a plurality of outflow holes are provided on the side wall of the insertion section, the plurality of outflow holes are located inside the expansion cavity and are spaced apart from the plate.

[0017] In some embodiments of this application, the inlet pipe and the housing are integrally formed.

[0018] In some embodiments of this application, the end of the inlet pipe facing away from the housing is closed, and the wall of the inlet pipe is provided with a side hole;

[0019] The flow distribution assembly also includes an inlet pipe, one end of which is connected to the inlet pipe through the side hole, and the other end of which is used to supply refrigerant. The inlet pipe is tangential to the inlet pipe.

[0020] In some embodiments of this application, the splitter component further includes:

[0021] The inlet pipe has a first end connected to the inlet pipe and communicating with the injection cavity, and a second end for supplying refrigerant. The inlet pipe has a turbulence structure for mixing the refrigerant flowing from the second end of the inlet pipe to the inlet pipe.

[0022] In some embodiments of this application, the splitter component further includes:

[0023] A flow divider cone is disposed on the plate and coaxially with the inlet hole. The flow divider cone is used to guide the refrigerant from the inlet hole to the flow divider hole.

[0024] In some embodiments of this application, the diversion assembly further includes a flow-dispersing element disposed between the inlet hole and the diversion hole;

[0025] And / or, the diversion assembly further includes an adjustment structure disposed inside the inlet pipe, the adjustment structure being used to mix the refrigerant flowing from the incident cavity into the expansion cavity.

[0026] In some embodiments of this application, the plate body includes:

[0027] A first plate is disposed inside the housing and seals the opening; the first plate has a plurality of the diversion holes.

[0028] The second plate is connected to and disposed on the side of the first plate away from the expansion cavity. The second plate has multiple insertion holes, the diameter of which is larger than the diameter of the diversion hole. The first connecting pipe is inserted into the insertion hole and communicates with the diversion hole.

[0029] In some embodiments of this application, the plate body is provided with a plurality of plug-in portions, the plurality of plug-in portions are arranged circumferentially along the inflow hole, the plug-in portions are adapted to be connected to the first connecting pipe, the plug-in portions have an extension structure protruding from the plate body, the extension structure is provided with the diversion hole, and the diversion hole is concentrically arranged with the first connecting pipe.

[0030] In some embodiments of this application, the splitter component further includes:

[0031] A connector is disposed on the side of the plate away from the expansion cavity. The connector has multiple insertion holes, each of which is connected to one of the diversion holes.

[0032] The first connecting pipe is connected to the plate body through the connector, and one end of the first connecting pipe is inserted into each of the insertion holes, and the diversion hole is connected to the first connecting pipe.

[0033] In some embodiments of this application, the first connecting pipe includes an adjusting pipe section and a flow pipe section, the flow pipe section being connected to the adjusting pipe section, and the flow area of ​​the adjusting pipe section being smaller than the flow area of ​​the flow pipe section.

[0034] In some embodiments of this application, the splitter component further includes:

[0035] The first adapter has one end connected to the end of the first connecting pipe away from the plate, and the other end of the first adapter is used to communicate with the first heat exchanger of the HVAC equipment.

[0036] In some embodiments of this application, the first connecting pipe includes a rigid portion, the length of which is in the range of 60%-95% of the length of the first connecting pipe.

[0037] In some embodiments of this application, the first connecting pipe has a first connecting segment and a second connecting segment, the first connecting segment being connected to the plate body, the second connecting segment being used to communicate with the first heat exchanger of the HVAC equipment, and the extension direction of the first connecting segment intersecting the extension direction of the second connecting segment.

[0038] A second aspect of this application also proposes a heating, ventilation, and air conditioning (HVAC) system, which includes...

[0039] First heat exchanger;

[0040] Second heat exchanger;

[0041] As in the diversion assembly of this application, the first connecting pipe is connected to the first heat exchanger, and the inlet pipe is connected to the second heat exchanger.

[0042] The HVAC equipment proposed in this application has the technical advantages of the aforementioned diversion components, which will not be elaborated here. Attached Figure Description

[0043] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of the embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0044] Figure 1 schematically shows a structural diagram of a heating, ventilation, and air conditioning (HVAC) device according to an embodiment of this application.

[0045] Figure 2 is a schematic diagram of the structure of the shunt component shown in Figure 1;

[0046] Figure 3 is a schematic diagram of one structure of the shunt component shown in Figure 2;

[0047] Figure 4 is an internal schematic diagram of the second structure of the shunt component shown in Figure 2;

[0048] Figure 5 is an internal schematic diagram of the third structure of the shunt component shown in Figure 2;

[0049] Figure 6 is an internal schematic diagram of the fourth structure of the shunt component shown in Figure 2;

[0050] Figure 7 is an internal schematic diagram of the fifth structure of the shunt component shown in Figure 2;

[0051] Figure 8 schematically shows a structural diagram of a sheet metal part according to an embodiment of this application;

[0052] Figure 9 is an internal schematic diagram of the sixth structure of the shunt component shown in Figure 2;

[0053] Figure 10 is a schematic diagram of the inlet pipe shown in Figure 7;

[0054] Figure 11 is an internal schematic diagram of the seventh structure of the shunt component shown in Figure 2;

[0055] Figure 12 is an internal schematic diagram of the eighth structure of the shunt component shown in Figure 2;

[0056] Figure 13 is an internal schematic diagram of the ninth structure of the shunt component shown in Figure 2;

[0057] Figure 14 is a schematic diagram of another structure of the plate shown in Figure 2;

[0058] Figure 15 is an internal schematic diagram of the tenth structure of the shunt component shown in Figure 2;

[0059] Figure 16 is a schematic diagram of the shunt component shown in Figure 15 from another perspective;

[0060] Figure 17 is a schematic diagram of one connection between the plate shown in Figure 2 and the first connecting pipe;

[0061] Figure 18 is a schematic diagram of one structure of the distributor shown in Figure 2;

[0062] Figure 19 is a schematic diagram of another structure of the distributor shown in Figure 2;

[0063] Figure 20 is an internal schematic diagram of the eleventh structure of the shunt component shown in Figure 2;

[0064] Figure 21 is an internal schematic diagram of the twelfth structure of the shunt component shown in Figure 2;

[0065] Figure 22 is a schematic diagram of the third structure of the distributor shown in Figure 2;

[0066] Figure 23 is an enlarged schematic diagram of B in Figure 22;

[0067] Figure 24 is a schematic diagram of the fourth structure of the distributor shown in Figure 2;

[0068] Figure 25 is an enlarged schematic diagram of F in Figure 22;

[0069] Figure 26 is an internal schematic diagram of the thirteenth structure of the shunt component shown in Figure 2;

[0070] Figure 27 is an internal schematic diagram of the fourteenth structure of the shunt component shown in Figure 2;

[0071] Figure 28 is a structural schematic diagram of the connector shown in Figure 27;

[0072] Figure 29 is an internal schematic diagram of the fifteenth structure of the shunt component shown in Figure 2;

[0073] Figure 30 is a structural schematic diagram of the connector shown in Figure 28;

[0074] Figure 31 is a schematic diagram of one structure of the first connecting pipe shown in Figure 2;

[0075] Figure 32 is a schematic diagram of another structure of the first connecting pipe shown in Figure 2;

[0076] Figure 33 is a schematic diagram of the third structure of the first connecting pipe shown in Figure 2;

[0077] Figure 34 is a schematic diagram of the connection between the flow splitter assembly and the first heat exchanger shown in Figure 1;

[0078] Figure 35 is a schematic diagram of the internal structure of the connection between the flow splitter and the first heat exchanger shown in Figure 35.

[0079] The markings in the attached diagram are as follows:

[0080] 1. Heating, ventilation, and air conditioning (HVAC) equipment;

[0081] 1000, Flow divider assembly; 2000, First heat exchanger; 2001, Inlet; 3000, Second heat exchanger; 4000, Compressor; 5000, Refrigeration throttle valve; 6000, Four-way valve;

[0082] 100. Distributor;

[0083] 200, First connecting pipe; 210, First flange; 230, Adjusting pipe section; 2301, Body; 2302, Adjusting component; 2303, Adjusting hole; 240, Flow pipe section; 250, First connecting section; 260, Second connecting section;

[0084] 300. Second connecting pipe; 301. Inlet pipe; 30101. Cover plate; 3011. Outlet hole; 3012. Reduction structure; 30121. Insertion section; 30122. Reduction section; 301211. Variable diameter section; 3013. Side hole; 3014. First cavity; 3015. Second cavity; 30130. Diverging section;

[0085] 302. Inlet pipe; 3021. First connecting hole; 3022. Pipe body; 3023. End cap; 3024. Threaded structure; 30241. First threaded section; 30242. Second threaded section; 3025. First straight pipe section; 3026. Bend section; 3027. Second straight pipe section;

[0086] 303. Connector;

[0087] 500, Sheet metal part; 501, Notch;

[0088] 10. Housing; 101. Injection cavity; 102. Flow stabilization cavity; 103. Expansion cavity; 104. Mounting cavity;

[0089] 11. First insertion part; 111. Inlet hole; 12. Mounting part;

[0090] 20. Plate body; 201. Diversion hole; 202. Insertion hole; 203. Clearance hole; 2031. Positioning structure; 204. Insertion part; 2041. Extension structure; 20411. Baffle cavity; 2042. Limiting plate; 205. Mounting hole;

[0091] 21. First plate; 211. First stepped countersunk hole; 22. Second plate; 221. Second stepped countersunk hole;

[0092] 23. Reinforcing rib; 24. Flanged structure; 25. Mounting groove;

[0093] 30. Diverter cone; 31. Cone; 32. Extension section; 33. Second flange; 311. Guide surface;

[0094] 40. Connector; 41. Connecting part; 42. Cylinder; 410. Insertion hole;

[0095] 50. Blower; 51. Filter; 511. First filter screen; 5111. First filter chamber; 512. Second filter screen; 5121. Second filter chamber;

[0096] 60. First adapter; 70. Second adapter; 80. Orifice plate. Detailed Implementation

[0097] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0098] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0099] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0100] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0101] As shown in Figures 1-35, this application proposes a flow-diverting assembly 1000 for use in a heating, ventilation, and air conditioning (HVAC) system 1. The HVAC system 1 may include a compressor 4000, a valve structure, a first heat exchanger 2000, and a second heat exchanger 3000 connected in series. The compressor 4000 is used to compress refrigerant. The refrigerant compressed by the compressor 4000 flows sequentially through the second heat exchanger 3000 and the first heat exchanger 2000, and finally flows back to the compressor 4000. The valve structure includes a four-way valve 6000. The four-way valve 6000 has four ports, two of which are connected to the output and input ends of the compressor 4000, respectively, and the other two ports are connected to the input end of the second heat exchanger 3000 and the output end of the first heat exchanger 2000, respectively.

[0102] The first heat exchanger 2000 and the second heat exchanger 3000 enable the HVAC system 1 to switch between evaporator and condenser functions, i.e., heating mode and cooling mode. In this configuration, one of the heat exchangers 2000 and 3000 is located outside the target space as an outdoor unit, while the other is installed inside the target space as an indoor unit. The outdoor and indoor units work together to form a circulation path, enabling the HVAC system 1 to provide cooling, heating, dehumidification, and air purification to the target space, thereby achieving a comfortable environment. The HVAC system 1 can have one outdoor unit and multiple indoor units; this embodiment does not impose a specific limitation on this.

[0103] In this embodiment, the HVAC equipment 1 is an air conditioner (in other embodiments of this application, the HVAC equipment 1 includes, but is not limited to, multi-split systems, heat pumps, water heaters, swimming pool machines, etc.), the first heat exchanger 2000 is an evaporator, and the second heat exchanger 3000 is a refrigerant. The first heat exchanger 2000 and the second heat exchanger 3000 are connected by a flow distribution assembly 1000 to achieve the distribution of refrigerant from the main gas / liquid collection pipe to multiple heat exchanger blocks. At this time, the valve structure also includes a refrigerant throttling valve 5000, which is connected and disposed between the flow distribution assembly 1000 and the second heat exchanger 3000.

[0104] As shown in Figures 2 and 3, the overall design of the diversion assembly 1000 includes a housing 10, a plate 20, a first connecting pipe 200, and an inlet pipe 301. The housing 10 has an inlet hole 111 and an expansion cavity 103 communicating with the inlet hole 111. The expansion cavity 103 has an opening on the side opposite to the inlet hole 111, and its inner diameter gradually increases from the inlet hole 111 to the opening. The plate 20 is mounted on the housing 10 and seals the opening. The plate 20 has multiple diversion holes 201. Multiple first connecting pipes 200 are connected to the plate 20, and each diversion hole 201 is connected to one corresponding first connecting pipe 200. The inlet pipe 301 is connected to the housing 10 and communicates with the inlet hole 111. The inlet pipe 301 and the housing 10 cooperate to form an inlet cavity 101, a flow stabilizing cavity 102 and an expansion cavity 103 that are connected in sequence. The inner diameter of the inlet cavity 101 is larger than the inner diameter of the flow stabilizing cavity 102, and the inner diameter of the flow stabilizing cavity 102 is smaller than or equal to the diameter of the inlet hole 111.

[0105] By setting the plate 20 on the housing 10, and connecting the plate 20 and the housing 10 to the first connecting pipe 200 and the inlet pipe 301 respectively to form a flow splitting structure, the processing difficulty of the distributor can be effectively reduced, thereby reducing the manufacturing cost of the distributor. At the same time, setting the flow splitting component as a split structure helps to improve the feasibility of the flow splitting performance design, thereby further optimizing the use effect of the flow splitting component.

[0106] It should be understood that in this embodiment, the housing 10 has a hemispherical structure, and the interior of the housing 10 defines a flow-dividing cavity. In this embodiment, the flow-dividing cavity includes an expansion cavity 103 and a mounting cavity 104. An inlet hole 111 and a mounting cavity 104 are respectively provided at both ends of the expansion cavity 103. From the direction of the inlet hole 111 towards the mounting cavity, i.e., the flow direction of the refrigerant, the inner diameter of the expansion cavity 103 gradually increases. At this time, the minimum inner diameter of the expansion cavity 103 is the same as the diameter of the inlet hole 111, and the maximum inner diameter of the expansion cavity 103 is the same as the diameter of the mounting cavity. The mounting cavity is connected to the outside and forms the opening of the flow-dividing cavity. The refrigerant entering the expansion cavity 103 from the inlet hole 111 changes its flow direction due to the change in the flow space, which on the one hand allows the refrigerant to mix in the expansion cavity 103, improving the mixing effect. On the other hand, the change in the aperture of the expansion cavity 103 can guide the flow of refrigerant, and thus, in conjunction with the diversion hole 201, ensure that the refrigerant flows uniformly and quickly to the diversion hole 201.

[0107] It should be noted that, in this embodiment, the housing 10 includes a main body (not shown in the figure) and a mounting portion 12. The main body defines an expansion cavity 103 for distributing and mixing the refrigerant. The mounting portion 12 is located on one side of the main body for mounting the plate 20 or other components. The mounting portion 12 defines a mounting cavity, the diameter of which is the same as the maximum inner diameter of the expansion cavity 103.

[0108] In this embodiment, the plate 20 has a circular plate structure and is suitable for placement in the mounting cavity 104. The plate 20 and the inlet hole 111 are positioned on opposite sides of the expansion cavity 103, and the axis of the plate 20 and the axis of the inlet hole 111 are collinear. Simultaneously, the plate 20 has multiple diversion holes 201 arranged around the axis of the plate 20. Multiple first connecting pipes 200 are connected to the plate 20, with each diversion hole 201 corresponding to one first connecting pipe 200, thus regulating the flow distribution. The diversion holes 201 and the first connecting pipes 200 are concentrically arranged. By ensuring that the axis of the plate 20 and the axis of the inlet hole 111 are collinear, and in conjunction with the structure of the expansion cavity 103, it is further guaranteed that the refrigerant can flow evenly to each diversion hole 201, ensuring the uniformity of the refrigerant flow while achieving the effect of refrigerant diversion.

[0109] It should be noted that in this embodiment, the flow cross section of the diversion hole 201 is set to a circle along the flow direction of the diversion hole 201. In addition, the flow cross section of the diversion hole 201 can also be set to a square, rhomboid, elliptical, triangular or pentagonal structure, etc. There are no restrictions here. At the same time, in addition to being set to a cylindrical shape, the diversion hole 201 can also be set to a tapered or expanding structure, which will not be described in detail here.

[0110] In this embodiment, the inlet pipe 301 defines a cavity, which includes an injection cavity 101 and a connecting cavity (not shown in the figure). The injection cavity 101 is used for the inflow of refrigerant, and the connecting cavity communicates with the expansion cavity 103, allowing the refrigerant flowing through the injection cavity 101 to enter the expansion cavity 103 through the inlet hole 111. The inner diameter of the injection cavity 101 is larger than the inner diameter of the connecting cavity. A transition cavity (not shown in the figure) is also provided between the injection cavity 101 and the connecting cavity to ensure that the refrigerant can enter the inlet hole 111. Along the refrigerant flow path, the inlet pipe 301 and the housing 10 cooperate to form the sequentially connected injection cavity 101, flow stabilizing cavity 102, and expansion cavity 103. By limiting the inner diameters of the injection cavity 101, flow stabilizing cavity 102, and expansion cavity 103, the inlet pipe 301 and the housing 10 cooperate to form a Venturi tube structure, thereby increasing the flow velocity by reducing the flow area and creating a low-pressure area at the throat. The change in refrigerant flow rate helps to further improve the refrigerant mixing effect and increase the refrigerant flow rate to each diversion hole 201, thereby ensuring the diversion effect of the diversion component 1000.

[0111] Furthermore, the housing 10 is provided with a first insertion part 11, which defines an inflow hole 111. The inlet pipe 301 is adapted to and connected to the first insertion part 11. By providing the first insertion part 11, it can cooperate with the inlet pipe 301 to achieve a sealed connection at the inflow hole 111, ensuring the assembly effect of the diversion assembly 1000. On the other hand, it can be used to limit or determine the insertion depth of the insertion section 30121.

[0112] It should be understood that the first insert part 11 is connected to the inlet pipe 301, and the connection method includes, but is not limited to, welding, insertion, snap-fit, and bonding. When the first insert part 11 is connected to the inlet pipe 301, the inflow hole 111 or the connecting cavity forms the aforementioned flow stabilizing cavity. In this embodiment, the first insert part 11 and the inlet pipe 301 are connected by insertion and reinforced by welding, which helps to improve the connection between the first insert part 11 and the inlet pipe 301.

[0113] In this embodiment, the inlet pipe 301 has an incident section and a reduced-diameter structure 3012 arranged sequentially. The incident section defines an incident cavity 101, and the reduced-diameter structure 3012 includes a reduced-diameter section 30122 and an insertion section 30121. The reduced-diameter section 30122 is connected between the incident section and the insertion section 30121, serving as a transition section, and the inner diameter of the incident section is larger than the inner diameter of the insertion section 30121. Optionally, the inner diameter of the incident section is 2 to 4 times the inner diameter of the insertion section 30121. This arrangement increases the flow velocity of the refrigerant as it flows through the inlet pipe 301, thereby further improving the uniformity of the refrigerant in conjunction with the blind pipe output end.

[0114] Furthermore, an insertion section 30121 is provided at the end of the inlet pipe 301 facing the housing 10. At least a portion of the insertion section 30121 passes through the inflow hole 111 and extends into the interior of the expansion cavity 103. Along the direction from the inlet pipe 301 to the housing 10, the first end of the insertion section 30121 communicates with the injection cavity 101 for supplying refrigerant. The second end of the insertion section 30121 is closed and located inside the expansion cavity 103. A plurality of outflow holes 3011 are provided circumferentially along the insertion section 30121. The plurality of outflow holes 3011 are located inside the expansion cavity 103 and are spaced apart from the plate 20.

[0115] By defining the position of the outflow hole 3011 in the insertion section 30121, one end of the insertion section 30121 can be formed as a blind tube output end, and the blind tube output end is located inside the expansion cavity 103. At this time, by utilizing the blind tube effect, the refrigerant can rush into the blind tube output end of the insertion section 30121 and form a backflow, thereby mixing the gas and liquid refrigerant. The mixed refrigerant can flow into the expansion cavity 103 through the circumferentially distributed small holes, which helps to improve the liquid separation problem caused by the inlet refrigerant deviation, and thus solves the problem that the gas and liquid two-phase refrigerant is prone to uneven mixing after entering the mixing cavity of the distributor 100.

[0116] As shown in Figure 4, in some embodiments of this application, the second end of the insertion section 30121 is connected to the plate 20, and the second end of the insertion section 30121 is closed by the plate 20. This arrangement eliminates the need for a flow divider cone in the distributor 100, simplifying its structure, improving the assembly effect of the flow divider assembly 1000, and effectively solving the problem of poor alignment between the flow divider cone and the inlet hole 111. At this time, along the circumference of the inlet hole 111, the housing 10 extends towards the inlet pipe 301, forming a first insertion part 11. The end of the first insertion part 11 facing away from the inlet hole 111 is welded and fixed to the circumferential surface of the inlet pipe 301. Simultaneously, the end of the first insertion part 11 facing away from the inlet hole 111 can abut against the reduced diameter section 30122, or be spaced apart from the reduced diameter section 30122, which helps limit the insertion depth of the insertion section 30121, thereby ensuring the accuracy of the assembly of the flow divider assembly 1000.

[0117] As shown in Figure 5, in some other embodiments of this application, the second connecting pipe 300 further includes a cover plate 30101. The cover plate 30101 is connected to the insertion section 30121, and the second end of the insertion section 30121 is closed by the cover plate 30101. At this time, the cover plate 30101 is spaced apart from the plate body 20. By providing the cover plate 30101, the second end of the insertion section 30121 can be ensured to be in a closed state. By limiting the spaced arrangement between the cover plate 30101 and the plate body 20, there is sufficient accommodating space between the cover plate 30101 and the plate body 20 for installing the aforementioned baffle 50 or other components, thereby reducing interference between components.

[0118] At this point, it should be noted that when the insertion depth of the insertion section 30121 is relatively deep, along the circumference of the inflow hole 111, the housing 10 extends in the direction away from the second connecting pipe 300, forming the first insertion part 11. In this embodiment, the length of the first insertion part 11 is less than the vertical distance between the inflow hole 111 and the outflow hole 3011. At this time, the first insertion part 11 will not affect the communication between the outflow hole 3011 and the expansion cavity 103. Moreover, a concave welding groove will be formed at the bottom of the housing 10. This welding groove can be welded and fixed to the circumference of the second connecting pipe 300, which not only facilitates the accumulation of solder but also effectively improves the reliability of the weld.

[0119] It should be noted that when the cover plate 30101 and the plate body 20 are spaced apart, the outlet hole 3011 is located between the plate body 20 and the inlet hole 111 in the vertical direction to ensure the output of the outlet hole 3011.

[0120] Furthermore, the presence of multiple outflow holes 3011 eliminates the need for a flow divider cone within the expansion cavity 103, helping to resolve the issue of poor alignment between the flow divider cone and the inflow hole 111. Simultaneously, it simplifies the structure of the distributor 100, reduces its manufacturing complexity, and thus improves the assembly performance of the flow divider assembly 1000.

[0121] Furthermore, the insertion section 30121 has a variable diameter portion 301211, which is located between the first end of the insertion section 30121 and the outlet hole.

[0122] Because the inlet of the distributor 100 may have a bend, the flow pattern of the refrigerant at the inlet of the distributor 100 is uneven. Although there is mixing at the blind tube outlet and the outlet hole 3011, there is still a situation where a small flow of refrigerant is not mixed evenly. By setting a variable diameter section 301211 in the insertion section 30121, the two-phase refrigerant at the inlet of the distributor 100 can be effectively accelerated to rush to the top, which helps to enhance the mixing effect at the blind tube outlet.

[0123] It should be understood that in this embodiment, the variable diameter section 301211 is located in the portion of the insertion section 30121 within the expansion cavity 103. Optionally, as shown in FIG4, the inner diameter of the variable diameter section 301211 first decreases and then increases along the direction from the inlet hole 111 to the branch hole 201. This arrangement can accelerate the flow of refrigerant after passing through the variable diameter section 301211, thereby improving the inlet state of the distributor 100 in conjunction with the blind end output end, and further enhancing the mixing effect of the refrigerant. Of course, in addition to this, the variable diameter section 301211 can be configured as a threaded section structure, a reduced diameter structure 3012, or an expanded diameter structure, etc.

[0124] It should be noted that the variable diameter section 301211 can be located outside the expansion cavity 103 to ensure that the refrigerant can flow in from the first end of the insertion section 30121 and flow through the variable diameter section 301211 to the blind tube output end.

[0125] Furthermore, as shown in Figure 7, the inlet pipe and the shell are integrally formed. It can be understood that both the shell 10 and the inlet pipe 301 are cylindrical structures. The shell 10 defines a hemispherical, diamond-shaped, or conical expansion cavity 103. One axial end of the expansion cavity 103 is open, and the other axial end has an inlet hole 111. The inlet hole 111 communicates with the inlet pipe 301. The inlet pipe 301 can be coaxially arranged with the inlet hole 111, that is, the inlet pipe 301 is coaxially arranged with the shell 10. The inlet pipe 301 can be a cylindrical straight pipe structure or a straight pipe structure with a narrowed diameter at one end, so that the connection between the inlet pipe 301 and the shell 10 is narrowed, forming a Venturi throat. This allows the fluid to be further mixed before entering the throat, and after being guided by the throat, it flows towards the center of the expansion cavity 103, improving the uniformity of the flow distribution.

[0126] As shown in Figure 8, the housing 10 and the inlet pipe 301 are integrally formed from a single sheet metal part 500 using sheet metal processing technology. Specifically, this can be achieved by extruding the cylindrical sheet metal part 500 or rolling a pre-formed sheet metal part 500 into a roll. This reduces the number of connection points in the overall structure, increases structural strength, and reduces the number of parts, resulting in higher production efficiency. Furthermore, since the housing 10 and the inlet pipe 301 are an integral structure, there are no leakage points, reducing the risk of leakage during use.

[0127] In some embodiments of this application, the step of extruding the sheet metal part 500 after rolling to form the expansion cavity 103 and the inlet pipe 301 includes any one of the following steps:

[0128] The two ends of the sheet metal part 500 after the roll are stamped to form the cavity of the expansion cavity 103 and the inlet pipe 301;

[0129] The circumference of the sheet metal part 500 after the roll is spun to form the cavity of the expansion cavity 103 and the inlet pipe 301.

[0130] It is understandable that the expansion cavity 103 and the inlet pipe 301 can be formed by spinning. A sheet metal part 500 with a larger diameter can be rolled according to the design profile (such as an arc-shaped Venturi throat) and gradually spun to achieve an integral transition of the throat (i.e., the diameter reduction structure 3012), thereby forming the expansion cavity 103 and the inlet pipe 301.

[0131] The expansion cavity 103 and the inlet pipe 301 can also be formed by a roll welding process. The flat sheet metal part 500 is stamped into a specific shape (such as the unfolded shape of a Venturi throat). According to the throat (i.e., the diameter reduction structure 3012) specifications, a notch 501 is stamped and cut on the sheet metal part 500. Then, the roll welding process is used to form the cylinder. Finally, the connecting seam is welded and sealed to form the expansion cavity 103 and the inlet pipe 301.

[0132] The expansion cavity 103 and the inlet pipe 301 can also be formed by stamping at both ends. A sheet metal part 500 with a smaller diameter after rolling is used. The two ends of the part are flared with different diameters according to the design profile and stamped with a mold to realize the structure of the cylinder, thereby forming the expansion cavity 103 and the inlet pipe 301.

[0133] Further, as shown in Figure 9, the end of the inlet pipe 301 away from the housing 10 is closed, and the pipe wall of the inlet pipe 301 is provided with a side hole 3013; one end of the inlet pipe 302 is connected to the inlet pipe 301 through the side hole 3013, and the other end of the inlet pipe 302 is used to allow fluid to flow in, and the inlet pipe 302 is tangent to the inlet pipe 301.

[0134] By aligning the axial direction of the incoming flow pipe 302 with the circumferential direction of the upstream inlet pipe 301 of the distributor 100, the refrigerant in the incoming flow pipe 302 enters the inlet pipe 301 tangentially. Under the action of centrifugal force, the gas-liquid two-phase refrigerant is forced to form an annular flow inside the inlet pipe 301, ensuring that the refrigerant entering the distributor 100 is in a good gas-liquid two-phase mixed state, thereby enabling the gas-liquid two-phase refrigerant to be fully mixed, thereby improving the uniformity of refrigerant distribution at the inlet of the distribution assembly 1000.

[0135] In some embodiments of this application, a first cavity 3014 and a second cavity 3015 are formed coaxially within the inlet pipe 301. The second cavity 3015 communicates with the inflow hole 111 through the first cavity 3014. Along the radial direction of the inlet pipe 301, the cross-sectional area of ​​the second cavity 3015 is smaller than that of the first cavity 3014. A side hole 3013 is provided on the cavity wall of the first cavity 3014.

[0136] It is understandable that the first cavity 3014 and the second cavity 3015 can be cylindrical structures and coaxially arranged. The flow direction in the inlet pipe 301 is from the end of the inlet pipe 301 connected to the inlet pipe 302 to the end of the inlet pipe 301 connected to the distributor 100. The fluid first passes through the first cavity 3014 and then flows into the second cavity 3015. The first cavity 3014 is directly connected to the inlet pipe 302. The fluid in the inlet pipe 302 enters the first cavity 3014 tangentially through the side hole 3013 on the cavity wall of the first cavity 3014. The cross-sectional area of ​​the first cavity 3014 can be designed to be larger than that of the first cavity 3014, so that the fluid can slow down and buffer in the first cavity 3014, and the residence time is longer. This is conducive to further mixing of the fluid in the first cavity 3014 and generating an annular flow along the circumference of the first cavity 3014. When the fluid is a refrigerant, it makes the mixing of the gas and liquid two-phase refrigerant more uniform.

[0137] Further understanding is needed. As shown in Figure 9, D1 is the diameter of the first cavity 3014, D2 is the diameter of the inlet pipe 302, and D3 is the axial length of the first cavity 3014, with direction A being the vertical direction. The ratio of D1 to D2 ranges from 2 to 5. In this case, the ratio of the diameter of the first cavity 3014 to the diameter of the inlet pipe 302 can be optimized. By controlling the diameter of the first cavity 3014, the space of the first cavity 3014 is not too large compared to the size of the inlet pipe 302, resulting in slow fluid flow within the first cavity 3014 and reduced flow efficiency. Conversely, the space of the first cavity 3014 is not too small compared to the size of the inlet pipe 302, resulting in a short residence time for the fluid within the first cavity 3014, causing it to flow out of the first cavity 3014 before achieving proper mixing. This increases the residence time of the gas-liquid two-phase refrigerant within the first cavity 3014, thereby improving the refrigerant mixing efficiency.

[0138] Understandably, the ratio of the axial length of the first cavity 3014 to the diameter of the inlet pipe 302 can be optimized. By controlling the axial length of the first cavity 3014, the space of the first cavity 3014 is not too large compared to the size of the inlet pipe 302, resulting in slow fluid flow within the first cavity 3014 and reduced flow efficiency. Furthermore, the space of the first cavity 3014 is not too small compared to the size of the inlet pipe 302, resulting in a short residence time for the fluid within the first cavity 3014, causing it to flow out of the first cavity 3014 before achieving proper mixing. This increases the residence time of the gas-liquid two-phase refrigerant within the first cavity 3014, thereby improving the refrigerant mixing efficiency.

[0139] Understandably, the ratio of the axial length to the diameter of the first cavity 3014 can be optimized. By controlling the shape of the first cavity 3014, the space of the first cavity 3014 can be made neither too wide nor too long, causing the fluid to flow slowly within the first cavity 3014 and reducing flow efficiency. Furthermore, the space of the first cavity 3014 can be made neither too narrow nor too short, causing the fluid to reside within the first cavity 3014 for too short a time, resulting in it flowing out of the first cavity 3014 before achieving a mixing effect. This increases the residence time of the gas-liquid two-phase refrigerant within the first cavity 3014, thereby improving the refrigerant mixing efficiency.

[0140] Furthermore, the flow distribution assembly 1000 also includes an inlet pipe 302, the first end of which is connected to the inlet pipe 301 and communicates with the injection cavity 101, the second end of which is used for the inflow of refrigerant, and the inlet pipe 302 has a turbulence structure for mixing the refrigerant flowing from the second end of the inlet pipe 302 to the inlet pipe 301.

[0141] By incorporating a turbulence structure on the inner wall of the inlet pipe 302, the refrigerant can collide with the pipe wall as it flows through the inlet pipe 302, thus fully mixing the gas-liquid two-phase refrigerant. Alternatively, a vortex can be formed within the inlet pipe 302, allowing the gas-liquid two-phase refrigerant to mix thoroughly, achieving a uniform distribution of the gas-liquid two-phase refrigerant. This helps solve the problem of uneven refrigerant distribution and flow deviation at the inlet of existing HVAC system distribution components.

[0142] It should be understood that in some embodiments of this application, the turbulence structure can be set as a threaded structure 3024 on the inner wall of the inlet pipe 302. In this case, the threaded structure 3024 extends spirally along the axial direction of the inlet pipe 302, and the length of the threaded structure 3024 along the axial direction of the inlet pipe 302 can be the same as the length of the inlet pipe 302. Alternatively, a bolted structure can be set in a section of the inlet pipe 302. For example, the inlet pipe 302 can be set as a U-shaped or S-shaped pipe with bends, so that the refrigerant can flow along the bend path in the inlet pipe 302 and collide with the pipe wall of the inlet pipe 302 during flow to fully mix the gas and liquid refrigerant. According to the flow resistance design requirements, the straight section of the inlet pipe 302 is provided with a threaded structure 3024 to allow the gas and liquid phases of the refrigerant to be fully mixed here, so as to achieve uniform distribution of the gas and liquid phases of the refrigerant, reduce flow resistance, and improve flow efficiency.

[0143] As shown in Figure 7, at least a portion of the inlet pipe 302 is U-shaped, and the end of the inlet pipe 302 that connects to the inlet hole 111 is coaxially arranged with the inlet hole 111. It can be understood that the overall U-shaped extension of the inlet pipe 302 allows the gas-liquid two-phase refrigerant entering the inlet pipe 302 to collide with the pipe wall at the bend of the U-shape, causing the refrigerant to flow in different directions, thereby fully mixing the gas-liquid two-phase refrigerant and improving the uniformity of the refrigerant before the distributor 100. Furthermore, the U-shape of the inlet pipe 302 minimizes its vertical height, thus reducing the accumulation of liquid and oil at the bottom of the heat exchanger downstream of the distributor assembly 1000 under lower cooling load conditions of the HVAC equipment.

[0144] The inlet pipe 302 includes a first straight pipe section 3025, a bend pipe section 3026, and a second straight pipe section 3027 connected in sequence. The end of the first straight pipe section 3025 facing away from the bend pipe section 3026 is connected to the inlet hole 111. The threaded structure 3024 includes a first threaded section 30241 and a second threaded section 30242. The first threaded section 30241 is disposed on the inner wall of the first straight pipe section 3025, and the second threaded section 30242 is disposed on the inner wall of the second straight pipe section 3027.

[0145] It is understood that the first straight pipe section 3025 and the second straight pipe section 3027 are straight pipe structures, and the first straight pipe section 3025 and the second straight pipe section 3027 can be arranged in parallel. The bent pipe section 3026 is arc-shaped and its two ends are connected to the first straight pipe section 3025 and the second straight pipe section 3027 respectively, so that the incoming pipe 302 extends in a U-shape. At least a part of the pipe wall of the first straight pipe section 3025 can be provided with a first threaded section 30241. The first threaded section 30241 can extend along the length direction of the first straight pipe section 3025 so that the refrigerant is subjected to the flow guide groove of the first threaded section 30241 when flowing through the first straight pipe section 3025 to generate annular mixed flow, so that the gas-liquid two-phase refrigerant is mixed more evenly. A second threaded section 30242 may be provided on at least a portion of the pipe wall of the second straight pipe section 3027. The second threaded section 30242 may extend along the length of the second straight pipe section 3027, so that the refrigerant, when flowing through the second straight pipe section 3027, is subjected to the guiding groove of the second threaded section 30242 to generate annular mixed flow, making the gas-liquid two-phase refrigerant mixture more uniform. The inner wall of the bend section 3026 may be a smooth inner wall, so that the flow resistance at this point is smaller, the flow efficiency is improved, and the processing is convenient.

[0146] The threaded structure 3024 can be formed by extruding the inlet pipe 302 into a spiral structure protruding into the inner cavity of the pipe through a die, which makes the processing convenient and the cost low. It can also guide the flow of refrigerant to generate annular swirl and improve the uniformity of refrigerant.

[0147] As shown in Figure 10, the thread depth of thread structure 3024 is L, and the thread width of thread structure 3024 is W. The ratio of W to L ranges from 0.5 to 2. The thread depth refers to the distance from the head to the bottom of the thread teeth of thread structure 3024 along the radial direction of the inlet pipe 302. The thread width refers to the length of the thread teeth along the axial direction of the inlet pipe 302. By optimizing the ratio range of thread depth and thread width of thread structure 3024, the flow area of ​​thread structure 3024 is made suitable, and the thread structure 3024 has a certain depth to improve the guiding effect of thread structure 3024 on refrigerant, thereby generating annular swirling flow of refrigerant and fully mixing the gas-liquid two-phase refrigerant.

[0148] As shown in Figure 10, the thread pitch of the thread structure 3024 is S, and the thread width of the thread structure 3024 is W. The ratio of W to S ranges from 1 to 2.5. The thread pitch refers to the distance between the heads of two adjacent threads along the axial direction of the inlet pipe 302. By optimizing the ratio range of the thread pitch and thread width of the thread structure 3024, the flow area of ​​the thread structure 3024 is made suitable, ensuring that the thread structure 3024 is neither too dense nor too sparse, thereby improving the guiding effect of the thread structure 3024 on the refrigerant, thus causing the refrigerant to generate annular swirling flow and fully mixing the gas and liquid two-phase refrigerant.

[0149] To be further understood, the length of the first threaded section 30241 along the axial direction of the inlet pipe 302 ranges from 30 mm to 50 mm; and / or, the length of the second threaded section 30242 along the axial direction of the inlet pipe 302 ranges from 30 mm to 50 mm.

[0150] It is understandable that by optimizing the lengths of the first threaded section 30241 and the second threaded section 30242, the lengths of the first threaded section 30241 and the second threaded section 30242 are made appropriate, so that the thread structure 3024 is not too long to avoid excessive flow resistance and affect flow efficiency. Furthermore, the length of the thread structure 3024 can achieve the basic effect of generating annular swirling flow for the refrigerant, so that the gas-liquid two-phase refrigerant is fully mixed.

[0151] To be further understood, along the axial direction of the inlet pipe 302, the ratio of the length of the first threaded section 30241 to the diameter of the inlet pipe 302 is in the range of 3 to 5, and / or, the ratio of the length of the second threaded section 30242 to the diameter of the inlet pipe 302 is in the range of 3 to 5.

[0152] It is understandable that by optimizing the range of the ratio between the diameter of the first threaded section 30241 and the second threaded section 30242 and the diameter of the inlet pipe 302, the lengths of the first threaded section 30241 and the second threaded section 30242 are appropriate, so that the threaded structure 3024 is not too long to avoid excessive flow resistance and affect flow efficiency, and the length of the threaded structure 3024 can achieve the basic effect of generating annular swirling flow for the refrigerant, so that the gas and liquid two-phase refrigerant are fully mixed.

[0153] To further understand, along the vertical direction A, the direction of rotation of the first threaded segment 30241 is the same as that of the second threaded segment 30242. Alternatively, along the vertical direction A, the first threaded segment 30241 extends in a counterclockwise spiral, and the second threaded segment 30242 extends in a clockwise spiral.

[0154] Understandably, the rotation direction of the first threaded section 30241 can be set to the same direction as that of the second threaded section 30242. This allows the gas-liquid two-phase refrigerant to initially mix after being guided by the second threaded section 30242 and then further mixed after being guided by the first threaded section 30241 again, thus improving the mixing uniformity of the refrigerant. Alternatively, the rotation directions of the first threaded section 30241 and the second threaded section 30242 can be set to opposite directions. The first threaded section 30241 can be set to extend counterclockwise (left-handed spiral), and the second threaded section 30242 can be set to extend clockwise (right-handed spiral). This allows the refrigerant to swirl clockwise after passing through the second threaded section 30242 and then counterclockwise after passing through the first threaded section 30241, resulting in further mixing through two rotations. This ensures thorough mixing of the gas-liquid two-phase refrigerant and improves the mixing uniformity of the refrigerant before it is split.

[0155] In some other embodiments of this application, the turbulence structure can be configured as a blind pipe structure, with one end of the inlet pipe 302 closed and the other end used to introduce refrigerant. A first connecting hole 3021 is provided on the side wall of the inlet pipe 302, penetrating the side wall of the inlet pipe 302, allowing the end of the inlet pipe 301 facing away from the distributor 100 to connect with the inlet pipe 302 through the first connecting hole 3021. A flange or connector can be provided at the first connecting hole 3021 to fix the end of the inlet pipe 301 to the inlet pipe 302, improving connection reliability. A certain distance exists between the first connecting hole 3021 and the first end of the inlet pipe 302, causing the refrigerant to impact the end and form a vortex within the inlet pipe 302, allowing the vapor and liquid phases of the refrigerant to mix thoroughly here, achieving uniform distribution of the vapor and liquid phases of the refrigerant.

[0156] By connecting the end of the inlet pipe 301 to the side wall of the inlet pipe 302 and sealing one end of the inlet pipe 302, the connection position between the inlet pipe 301 and the inlet pipe 302 is spaced from the end of the sealing edge of the inlet pipe 302, so that the refrigerant enters the inlet pipe 302 first. Due to the sealing edge at the end of the inlet pipe 302, the refrigerant will form a vortex in the inlet pipe 302 after impacting the end, allowing the vapor and liquid phases of the refrigerant to mix fully here, so as to achieve uniform distribution of the vapor and liquid phases of the refrigerant.

[0157] In some embodiments of this application, the axial direction of the inlet pipe 302 is perpendicular to the axial direction of the inlet pipe 301. It is understood that the inlet pipe 302 and the inlet pipe 301 can be connected vertically. For example, the inlet pipe 302 is set horizontally and the inlet pipe 301 is set vertically and located above the inlet pipe 301. This allows the refrigerant to collide with the closed end of the inlet pipe 302 after entering the inlet pipe 302 to form a reflux flow, so that the gas-liquid two-phase refrigerant in the inlet pipe 302 is fully mixed and then flows into the expansion cavity 103 through the inlet pipe 301, thereby improving the mixing uniformity of the refrigerant before the splitting and thus improving the performance of the splitting assembly 1000.

[0158] The inlet pipe 302 includes a pipe body 3022 and an end cap 3023. The end cap 3023 is disposed at one end of the pipe body 3022 and seals the end of the pipe body 3022. The other end of the pipe body 3022 is used for fluid inflow. A first connecting hole 3021 is provided on the side wall of the pipe body 3022.

[0159] It is understandable that the pipe body 3022 can be a straight pipe with both ends open, and the end cap 3023 is sealed to one end of the pipe body 3022. The end cap 3023 can be sleeved on one end of the pipe body 3022, or embedded in one end of the pipe body 3022, or it can be set at one end of the pipe body 3022 by spin sealing, so that the inlet pipe 302 forms a blind pipe structure, so as to generate swirling flow in the inlet pipe 302 and improve the mixing uniformity of the gas-liquid two-phase refrigerant.

[0160] To further understand, as shown in Figure 11, along the axial direction of the inlet pipe 302, the distance between the first connecting hole 3021 and the end cap 3023 is a first distance d, and the ratio of the first distance to the inner diameter b of the inlet pipe 302 ranges from 1 to 3. It can be understood that setting the ratio of the distance between the first connecting hole 3021 and the first end to the inner diameter of the inlet pipe 302 within the range of 1 to 3 ensures that the distance between the first connecting hole 3021 and the first end is moderate, allowing for thorough mixing of the refrigerant through a swirling flow generated at the end of the inlet pipe 302, and preventing the distance between the first connecting hole 3021 and the first end from becoming too large, thus reducing flow efficiency.

[0161] As shown in Figure 11, the ratio of the inner diameter b of the inlet pipe 302 to the inner diameter c of the inlet pipe 301 ranges from 1.2 to 2.5. It is understandable that setting the ratio of the inner diameter of the inlet pipe 302 to the inner diameter of the inlet pipe 301 to a range of 1.2 to 2.5 ensures that the difference in flow area between the inlet pipe 302 and the inlet pipe 301 is neither too large nor too small, thereby resulting in higher flow efficiency between the inlet pipe 302 and the inlet pipe 301.

[0162] As shown in Figure 11, the diversion assembly 1000 also includes a connecting seat 303, which is installed on the side wall of the incoming pipe 302. The connecting seat 303 has a second connecting hole that passes through the connecting seat 303 and communicates with the first connecting hole 3021. One axial end of the inlet pipe 301 is inserted into the second connecting hole.

[0163] It is understood that the connecting seat 303 can be a rotating structure, such as a cylindrical or frustum-shaped structure with a through second connecting hole. One axial end of the connecting seat 303 can be adapted to the side wall shape of the inlet pipe 302, designed with an arc-shaped end face, and connected to the inlet pipe 302 by welding. The connecting seat 303 is provided with a through second connecting hole, one end of which communicates with the first connecting hole, and the other end is used to insert the inlet pipe 301. The end of the inlet pipe 301 can be set in the second connecting hole by interference fit, or the side wall of the inlet pipe 301 can be connected to the connecting seat 303 by welding, so as to realize the fixed connection between the inlet pipe 301 and the connecting assembly, thereby improving the connection reliability between the inlet pipe 301 and the inlet pipe 302.

[0164] In some embodiments of this application, the turbulence structure may be a gradually expanding section 30130 disposed on the insertion section 30121. In this case, the insertion section 30121 is sleeved on the outer peripheral surface of the first insertion part 11, and the inner diameter of the end of the insertion section 30121 near the injection cavity 101 is the same as the inner diameter of the inflow hole 111. The gradually expanding section 30130 is disposed in the middle section of the insertion section 30121. The inner diameter of the gradually expanding section 30130 gradually increases from the direction facing the housing 10 from the inlet pipe 301. The inner diameter of the small inner diameter is the same as that of the inlet hole 111, and the maximum inner diameter of the expanding section 30130 is the same as that of the outer diameter of the first insert part 11. At this time, the expanding section 30130 and the first insert part 11 cooperate to form an expansion groove. By defining the expansion groove between the expanding section 30130 and the first insert part 11, the refrigerant entering the second connecting pipe 300 impacts the expansion groove, causing the uneven refrigerant to generate eddies after colliding with the groove wall of the expansion groove, which intensifies the instability of the refrigerant and promotes the dispersion of the refrigerant, thus playing the role of preliminary mixing of the refrigerant before diversion.

[0165] As shown in Figure 12, the angle between the inner wall of the expanding section 30130 and the axial direction of the expanding section 30130 ranges from 50° to 70°. It can be understood that the cross-section of the expansion channel along the axial direction of the inlet pipe 301 is V-shaped. At this point, the expansion channel has a gradually expanding angle of approximately 60° (α in the figure). This causes the flow velocity to decrease and the pressure to increase as the fluid flows through the expansion channel due to the gradual increase in the flow area. Furthermore, due to the influence of viscosity, the flow velocity is low near the wall. When the gradually expanding angle of the expansion channel is 60°, the degree of eddy current is the greatest, and the fluid mixing is more intense, which can further improve the uniformity of fluid mixing at this point.

[0166] Furthermore, a flow divider cone 30 is disposed on the plate 20, and the axis of the flow divider cone 30 is on the same straight line as the axis of the inlet hole 111. The flow divider cone 30 is used to guide the fluid from the inlet hole 111 to the flow divider hole 201.

[0167] By setting the flow divider cone 30, a flow guiding surface can be formed in the flow divider cavity, so that the refrigerant can flow evenly to each flow divider hole 201 under the action of the flow divider cone 30 after entering the expansion cavity 103, thus ensuring the flow divider effect of the flow divider assembly 1000. At the same time, the setting of the flow divider cone 30 can also work with the structure of the expansion cavity 103 to further improve the flow divider effect of the distributor 100.

[0168] In some embodiments of this application, the diverting cone 30 and the plate 20 are integrally formed. By making the diverting cone 30 and the plate 20 an integrally formed part, the manufacturing and assembly difficulty of the distributor 100 is reduced. As shown in Figure 13, in this embodiment, the diverting cone 30 and the plate 20 are integrally stamped. The structure is simple and easy to manufacture. Optionally, the internal hollowing-out design of the diverting cone 30 helps reduce the manufacturing cost of the distributor 100 and ensures the guiding effect of the diverting cone 30.

[0169] At this point, the flow divider cone 30 can be configured as a conical structure or a pyramidal structure. When the flow divider cone 30 is configured as a pyramid, as shown in Figure 14, the flow divider cone 30 has multiple guide surfaces 311, each corresponding to a flow divider orifice 201. This design ensures that each guide surface 311 specifically guides the fluid into its corresponding flow divider orifice 201. Since the guide surfaces 311 are continuously connected, they can effectively guide the fluid to flow downwards from the top of the flow divider cone 30, avoiding collisions and turbulence within the cavity and ensuring uniform fluid distribution. After entering through the inlet orifice 111, the fluid directly contacts the top of the flow divider cone 30 and is then smoothly dispersed along the guide surfaces 311 into each flow divider orifice 201. Due to the correspondence between the guide surfaces 311 and the flow divider orifices 201, the fluid flow rate received by each flow divider orifice 201 is relatively consistent, further improving the uniformity of the system's flow distribution.

[0170] It should be noted that, in addition to placing the small-diameter end in the expansion cavity 103, the small-diameter end can also be placed on the side opposite to the expansion cavity 103, that is, inside the mounting cavity 104. In this case, the internal hollowing-out arrangement of the flow divider cone 30 forms a conical flow guiding space. The refrigerant entering the expansion cavity 103 from the inlet hole 111 will impact the small-diameter end of the flow divider cone 30, and under the action of the conical surface of the flow divider cone 30, it will flow to each flow divider hole 201. Since the inlet hole 111 and the small-diameter end are on the same straight line, the flow guiding space is on the same horizontal plane, and the pressure is the same or similar everywhere, which helps to ensure the uniformity of refrigerant flow.

[0171] In some other embodiments of this application, the diverting cone 30 and the plate 20 are separate structures. The diverting cone 30 can be directly disposed on the side of the plate 20 facing the expansion cavity. In this case, the small-diameter end of the diverting cone 30 is located in the expansion cavity 103. Alternatively, a clearance hole 203 is provided in the middle of the plate 20, the diverting cone 30 is disposed in the clearance hole 203, and the small-diameter end of the diverting cone 30 is located in the expansion cavity 103. The diverting cone 30 is disposed in the clearance hole 203 of the plate 20, and the diverting cone 30 is welded and fixed to the plate 20. This arrangement helps to adjust the insertion depth of the diverting cone 30, ensures the distance between the diverting cone 30 and the inflow hole 111, and helps to improve the applicability of the distributor 100 and adjust the diversion effect. On the other hand, the diversion cone 30 can be configured with different structures such as a cone, a triangular pyramid, a square pyramid, or a pentagonal pyramid to match the number of diversion holes 201, ensuring the diversion effect. At the same time, it helps to improve the diversity of the diversion cone 30, thereby improving the applicability of the distributor 100.

[0172] Further understanding, as shown in Figure 15, the flow divider cone 30 includes a cone 31, an extension 32, and a second flange 33. The cone 31, extension 32, and second flange 33 are sequentially connected in the direction from the inlet hole 111 towards the plate 20. The extension 32 is adapted to the inner wall of the clearance hole 203. Optionally, the cone 31 is disposed inside the expansion cavity 103, and the second flange 33 is fitted and connected to the side of the plate 20 opposite to the expansion cavity 103. By providing the extension 32, which can cooperate with the clearance hole 203, a sealed connection between the plate 20 and the flow divider cone 30 is achieved. Meanwhile, the second flange 33 helps to further improve the sealing effect between the plate 20 and the flow divider cone 30; on the other hand, it can also improve the assembly efficiency of the plate 20 and the flow divider cone 30, thereby improving the assembly effect of the distributor 100; thirdly, the second flange 33 can increase the welding area between the flow divider cone 30 and the plate 20, which helps to further improve the connection effect between the flow divider cone 30 and the plate 20.

[0173] It should be noted that when the cone of the flow divider cone 30 is set in the mounting cavity 104, the second flange 33 is attached to the side of the plate 20 facing the expansion cavity 103. At this time, the welding position of the flow divider cone 30 and the plate 20 is the connection between the cone and the plate 20. This setting helps to reduce the impact of welding on the flow of refrigerant, so as to ensure the effect of the flow divider cone 30.

[0174] Furthermore, the flow divider cone 30 can also be composed solely of a cone 31 and an extension 32. Optionally, the end face of the extension 32 facing away from the cone 31 can be on the same plane as the mounting surface to ensure ease of welding. Alternatively, the end face of the extension 32 facing away from the cone 31 can also be parallel to the mounting surface, meaning the extension 32 extends to the side of the plate 20 facing away from the expansion cavity 103, or the extension 32 can be positioned inside the clearance hole 203.

[0175] It should be noted that, as shown in Figures 13 to 15, the connection between the above-mentioned diverting cone 30 and the plate 20, whether it adopts an integral molding or a split structure, the plate 20 is a single plate structure. At this time, the plate 20 is connected to the first connecting pipe 200.

[0176] In some embodiments of this application, as shown in Figures 15 and 16, a first flange 210 is provided at the end of the first connecting pipe 200 facing the distributor 100. The first flange 210 surrounds the first connecting pipe 200 and is in close contact with the distributor 100. The first flange 210 is located at one end of the first connecting pipe 200 and on its outer surface, extending radially along the first connecting pipe 200. The end of the first flange 210 facing the plate 20 has a surface that is in close contact with the plate 20, allowing the first flange 210 to be welded and fixed to the plate 20. The first connecting pipe 200 and its corresponding diversion hole 201 are concentrically arranged. The provision of the first flange 210 increases the welding area between the first connecting pipe 200 and the distributor 100, increasing the reliability of the welding and thus solving the problem of poor reliability of the existing overlap structure between the distributor and the distribution pipe. Meanwhile, by setting the first flange 210 on the first connecting pipe 200, the distributor 100 does not need to have a structure that connects with the first connecting pipe 200, which helps to simplify the structure of the distributor 100 and reduce the structural requirements of the distributor 100.

[0177] In some embodiments of this application, as shown in Figures 17 to 19, one end of the first connecting pipe 200 can be inserted into the diversion hole 201 to achieve fixation with the housing 10. The portion of the first connecting pipe 200 inserted into the diversion hole 201 can be fixed by interference fit with the hole wall of the diversion hole 201, or the portion of the first connecting pipe 200 inserted into the diversion hole 201 can be fixed by welding to the hole wall of the diversion hole 201. To ensure the reliability of the connection between the first connecting pipe 200 and the housing 10, the thickness of the plate 20 can be set to be greater than a certain value, and the length of the first connecting pipe 200 inserted into the diversion hole 201 is also set to be greater than a certain value, so that the length of the first connecting pipe 200 inserted into the diversion hole 201 is not too small, thereby improving the reliability of the connection between the first connecting pipe 200 and the housing 10, and making it difficult for the first connecting pipe 200 to fall out of the diversion hole 201.

[0178] As shown in Figure 18, a mounting groove is provided on the outer edge of the plate 20 facing the expansion cavity 103. The mounting groove is arranged around the axis of the inflow hole 111, and the end of the housing 10 facing away from the inflow hole 111 is installed in the mounting groove. It can be understood that the mounting groove can be arranged in a ring and extend around the axis of the plate 20, or the mounting groove includes multiple parts, which are spaced apart along the circumference of the plate 20. The shape of the mounting groove matches the opening of the housing 10. The mounting groove can be defined by a first plane that is annular and radially parallel to the plate 20 and a second plane that is annular and axially parallel to the plate 20. When installing the plate 20, the second plane can be embedded into the expansion cavity 103 and abut against the cavity wall of the expansion cavity 103. Then, the first plane abuts against the end face of the opening of the housing 10 to realize that part of the plate 20 is embedded into the expansion cavity 103, and the opening of the housing 10 is matched and fixed with the mounting groove, which further improves the reliability of the connection between the plate 20 and the housing 10.

[0179] As shown in Figure 19, the axial direction of the diversion hole 201 is angled to the axial direction of the inflow hole 111, and along the flow direction of the diversion hole 201, the axial direction of the diversion hole 201 is inclined away from the axis of the inflow hole 111. It can be understood that since the plate 20 is inclined at a certain angle relative to the axes of the inflow hole 111 and the expansion cavity 103, the diversion hole 201 can also be inclined at a certain angle to the axes of the inflow hole 111 and the expansion cavity 103 for ease of processing. The angle between the axis of the diversion hole 201 and the axis of the expansion cavity 103 can be set to 5°, making the openings of the diversion holes 201 more dispersed on the side of the plate 20 away from the expansion cavity 103. This makes the connection and installation between the first connecting pipe 200 and the diversion hole 201 more convenient and easier to operate. In addition, the plate surface of the plate body 20 on the side away from the expansion cavity 103 can also be set into a conical shape, and the angle between the plate surface of the plate body 20 on the side away from the expansion cavity 103 and the radial direction of the expansion cavity 103 is 5°.

[0180] In some embodiments of this application, as shown in Figures 20 and 21, a plug-in portion 204 is provided on the plate body 20. The plug-in portion 204 is adapted to be connected to the first connecting pipe 200. The plug-in portion 204 has an extension structure 2041 that protrudes from the plate body 20. A diversion hole 201 is provided on the extension structure 2041. The diversion hole 201 is concentrically arranged with the first connecting pipe 200.

[0181] By providing a plug-in portion 204 on the plate body 20 to adapt and connect with the first connecting pipe 200, the contact area between the first connecting pipe 200 and the plate body 20 is effectively increased, and the connection strength between the distributor 100 and the first connecting pipe 200 is improved. This helps to solve the problem of poor overlap effect between the existing distributor and the distribution pipe. In addition, it also helps to solve the alignment problem between multiple accessories when they are fitted together, and provides convenience for subsequent welding. At this time, the diversion assembly 1000 can use both plug-in and welding connection methods to further improve the connection strength between the distributor 100 and the first connecting pipe 200.

[0182] As shown in Figure 20, the insertion portion 204 is configured as a hole. An extension structure 2041 protrudes from one end face of the plate 20, forming an extension of the insertion portion 204. This extension structure 2041 has a limiting plate 2042, on which a diversion hole 201 is provided. The limiting plate 2042 and the diversion hole 201 are concentrically arranged. In this embodiment, the insertion portion 204 is configured as a circular hole, and the first connecting pipe 200 is inserted into the insertion portion 204 and abuts against the limiting plate 2042. When the plate 20 is disposed in the mounting portion 12 of the housing 10, the extension structure 2041 is located inside the expansion cavity 103. The diameter of the diversion hole 201 is smaller than the inner diameter of the first connecting pipe 200. The extension structure 2041, by limiting the diameter of the diversion hole 201, helps to achieve multiple changes in the local flow direction of the refrigerant, thereby improving the mixing effect of the refrigerant.

[0183] It should be noted that the thickness of the plate 20 is 2 to 4 times the depth of the extension structure 2041. Furthermore, the extension structure 2041 is spaced apart from the inner wall of the expansion cavity 103. The extension structure 2041 helps to further improve the structural strength of the plate 20, and also helps to ensure the insertion depth of the first connecting pipe 200, thereby improving the installation effect of the first connecting pipe 200 and the convenience of welding.

[0184] In some other embodiments of this application, as shown in FIG21, the insertion part 204 is a columnar structure, and an extension structure 2041 of the insertion part 204 protrudes from one end face of the plate 20. When the plate 20 is mounted on the housing 10, the extension structure 2041 is located on the side of the plate 20 away from the expansion cavity 103. At this time, the first connecting pipe 200 is sleeved on the extension structure 2041, and the diversion hole 201 passes through the plate 20 to connect the expansion cavity 103 and the first connecting pipe 200. The provision of the extension structure 2041 helps to enhance the structural strength of the plate 20. At the same time, the sleeved connection between the first connecting pipe 200 and the plate 20 helps to ensure the installation effect of the first connecting pipe 200 and the convenience of welding.

[0185] It should be noted that the plate 20 is disposed in the mounting portion 12 of the housing 10, that is, the plate 20 is accommodated in the mounting cavity 104. As shown in Figure 18, the thickness of the plate 20 is the same as the depth of the mounting cavity 104. At this time, the side of the plate 20 facing away from the expansion cavity 103 is on the same plane as the end face of the housing 10. At this time, the welding position of the plate 20 to the housing 10 is on the same plane as the welding position of the plate 20 to the first connecting pipe 200. This helps to improve the convenience of welding and ensure the assembly effect of the distributor 100.

[0186] Further understanding is that a turbulence cavity 20411 is provided on the side of the insertion part 204 facing the expansion cavity 103. When the plate 20 is disposed inside the mounting cavity 104, the turbulence cavity 20411 cooperates with the expansion cavity 103 to form a turbulence space, thereby helping to improve the flow distribution and turbulence effect of the distributor 100. Simultaneously, the inner diameter of the turbulence cavity 20411 is slightly smaller than the inner diameter of the first connecting pipe 200. Here, "slightly smaller" means that the inner diameter of the turbulence cavity 20411 is 75% to 95% of the inner diameter of the first connecting pipe 200, specifically 75%, 80%, 85%, 90%, or 95% of the inner diameter of the first connecting pipe 200. The inner diameter of the turbulence cavity 20411 is 2 to 4 times the inner diameter of the first connecting pipe 200. Optionally, the inner diameter of the turbulence cavity 20411 is twice the inner diameter of the first connecting pipe 200. By limiting the inner diameter of the turbulence cavity 20411 to be larger than the diameter of the diversion orifice 201 and smaller than the inner diameter of the first connecting pipe 200, the refrigerant's flow direction changes due to the increased flow space after entering the first connecting pipe 200, thereby improving the refrigerant's mixing effect. Furthermore, since the diversion orifice 201 and the first connecting pipe 200 are concentrically arranged, the refrigerant flow is more uniform, ensuring a better mixing effect.

[0187] Further, as shown in Figures 3, 11, 12, 22, and 24, the plate 20 includes a first plate 21 and a second plate 22. The second plate 22 is connected to the side of the first plate 21 facing away from the inflow hole 111. The first plate 21 is disposed on the housing 10 and blocks the expansion cavity 103. The second plate 22 is connected to the housing 10. The first plate 21 is provided with multiple diversion holes 201, and the second plate 22 is provided with multiple insertion holes 202. The insertion holes 202 are coaxially arranged with the diversion holes 201. The diameter of the insertion holes 202 is larger than the diameter of the diversion holes 201. The diversion assembly 1000 also includes a first connecting pipe 200. The first end of the first connecting pipe 200 is inserted into the insertion hole 202 and communicates with the diversion hole 201. The end face of the first end is connected to the plate surface of the second plate 22 facing away from the expansion cavity 103.

[0188] It is understood that the plate 20 can be composed of a first plate 21 and a second plate 22, which are separately arranged. The first plate 21 is located in the expansion cavity 103 and is provided with a diversion hole 201 for adjusting and distributing the flow. The diversion hole 201 can be a straight hole or a gradually expanding hole along the flow direction. The second plate 22 can be fixedly connected to the first plate 21 by welding or snap-fitting, and the outer edge of the second plate 22 is fixed to the shell 10 by snap-fitting or welding. The second plate 22 is provided with an insertion hole 202 for inserting one end of the first connecting pipe 200 into the insertion hole 202 to connect the first connecting pipe 200 to the plate 20, and the first connecting pipe 200 communicates with the expansion cavity 103 through the diversion hole 201. The diameter of the insertion hole 202 can be set to be larger than the diameter of the diversion hole 201, so that a stepped structure is formed at the insertion hole 202 and the diversion hole 201. This allows the end of the first connecting pipe 200 after being inserted into the insertion hole 202 to abut against the surface of the first plate 21. The first connecting pipe 200 can be welded to the first plate 21. With the connection between the peripheral wall of the first connecting pipe 200 and the wall of the insertion hole 202, the connection area between the first connecting pipe 200 and the plate 20 is increased, thereby improving the reliability of the connection.

[0189] Further understanding is that, along the axial direction of the diversion hole 201, the thickness of the second plate 22 is greater than or equal to 1.5 mm, the first plate 21 has a first thickness, the diversion hole 201 has a first diameter, and the insertion hole 202 has a second diameter, wherein the second diameter is greater than or equal to the sum of the first diameter and the two first thicknesses. It can be understood that the thickness of the second plate 22 can be optimized to give it a certain thickness, thereby making the axial length of the insertion hole 202 on the second plate 22 greater than a certain value, making the connection between the first connecting pipe 200 and the insertion hole 202 more reliable. Furthermore, optimizing the ratio between the diameter of the insertion hole 202 and the diameter of the diversion hole 201 makes the plate surface area between the insertion hole 202 and the diversion hole 201 suitable, facilitating the abutment and fixation of the end of the first connecting pipe 200 against the plate surface. This structure can increase the connection area between the first plate 21 and rigid metal pipes such as stainless steel with large wall thickness.

[0190] As shown in Figure 3, when the plate 20 consists of two plates, the second flange 33 of the diverter cone 30 can abut against the inner wall of the mounting hole 205 of the second plate 22. The second flange 33 can then be welded and fixed to the mounting hole 205. Furthermore, as shown in Figures 22 and 23, in some embodiments of this application, the plate 20 is provided with a positioning structure 2031, which is an annular groove arranged circumferentially along the clearance hole 203. The annular groove is located between the first plate 21 and the second plate 22. The diverter cone 30 includes a ring-shaped second flange 33, which is fixedly connected to the annular groove. In this embodiment, the design of the annular groove provides a larger fixing area, increasing the number and strength of the fixing points. The second flange 33 of the diverter cone 30 fits tightly within the annular groove, further improving the fixing stability and preventing loosening or displacement of the structure under high pressure or long-term use. Meanwhile, the annular groove clamps and positions the first plate 21 and the second plate 22, ensuring the precise positioning of the flow divider cone 30. This allows for more accurate fixing during installation and reduces potential deviations. Furthermore, the annular groove effectively disperses stress, resulting in a more uniform load on the flow divider cone 30 during operation. This reduces stress concentration at the fixing point, giving the flow divider assembly 1000 better fatigue resistance when facing repeated fluid impacts or prolonged operation, thus extending the equipment's service life.

[0191] At this point, the annular groove includes a first stepped countersunk hole 211 and a second stepped countersunk hole 221. The first stepped countersunk hole 211 is located on the end face of the first plate 21 facing away from the inflow hole 111 and is coaxially arranged with the clearance hole 203. The second stepped countersunk hole 221 is located on the end face of the second plate 22 facing the inflow hole 111 and is coaxial with the mounting hole 205. The first stepped countersunk hole 211 and the second stepped countersunk hole 221 enclose each other to form an annular groove. The annular groove formed by the combination of the first stepped countersunk hole 211 and the second stepped countersunk hole 221 provides a clear positioning and fixed position for the second flange 33 of the diversion cone 30, ensuring that the diversion cone 30 can be accurately fixed between the first plate 21 and the second plate 22, reducing possible displacement or misalignment during the fixing process, and improving the accuracy and stability of the fixing. Meanwhile, the cooperation of the first step countersunk hole 211 and the second step countersunk hole 221 forms an annular groove, which provides a closed positioning structure, ensuring a tight connection between the flow divider cone 30 and the plate 20, avoiding the problem of fluid leakage, thereby improving the sealing performance of the distributor 100.

[0192] As shown in Figures 24 and 25, the second plate 22 has a circumferentially stepped countersunk hole for mounting holes 205. This stepped countersunk hole is located on the end face of the second plate 22 opposite to the inflow hole 111, and the second flange 33 is fixedly connected to the stepped countersunk hole. In this embodiment, the stepped countersunk hole provides a precise fixing and positioning area for the second flange 33 of the flow divider cone 30, increasing the contact area and making the fixing point more stable. Simultaneously, by providing the stepped countersunk hole on the second plate 22, the second flange 33 of the flow divider cone 30 can be accurately embedded, thereby providing precise radial positioning and a stable fixing connection. This design not only enhances the fixing firmness of the flow divider cone 30 but also reduces offset and errors during fixing.

[0193] Furthermore, the flow distribution assembly 1000 also includes a flow-deflecting element 50, which is disposed between the inlet hole 111 and the flow-deflecting hole 201. The flow-deflecting element 50 effectively improves the flow uniformity within the expansion cavity 103, thereby further enhancing the refrigerant mixing effect and helping to optimize the flow distribution effect of the distributor 100. Simultaneously, the flow-deflecting element 50 can also adjust the refrigerant flow direction, thereby reducing noise and further improving the performance of the distributor 100. Optionally, the flow-deflecting element 50 can be configured as a filter screen, as shown in Figures 4 and 5. The filter screen is spherical and is disposed inside the expansion cavity 103, thus dividing the expansion cavity 103 into two different flow chambers. Optionally, the filter screen is connected to the housing 10 by welding.

[0194] In some other embodiments of this application, the flow-disrupting element 50 includes a filter element 51, as shown in FIG26. The filter element 51 is a first filter screen 511, which is a spherical cap-shaped filter screen that protrudes towards one side of the inflow hole 111. In this case, the first filter screen 511 is disposed on the plate 20, forming a first filter cavity 5111 between it and the plate. The height of the first filter screen 511 coincides with the axis of the inflow hole 111, that is, the highest point of the first filter screen 511 is located on the central axis of the inflow hole 111. In this case, there is no need to set a flow-dividing cone inside the expansion cavity 103. This design allows the fluid to first contact the central part of the spherical cap-shaped arc-shaped filter screen when it enters from the inflow hole 111, and then be evenly distributed across the entire surface of the first filter screen 511. The spherical cap-shaped arc design allows the fluid to contact the surface of the first filter screen 511 in a more natural way, reducing the flow resistance caused by the planar structure of the filter screen. This more uniform fluid distribution improves the flow efficiency of the distributor 100 and reduces energy loss as the fluid flows through the first filter screen 511. Simultaneously, the spherical arc-shaped filter screen has a larger filtration surface area compared to a flat filter screen. This means that the first filter screen 511 of the same volume can handle more fluid and filter out more particles, further enhancing the filtration effect of the distributor 100. By increasing the filtration area, the pressure on the filter screen per unit area is effectively reduced, extending the service life of the first filter screen 511.

[0195] In some other embodiments of this application, a flow-diverting cone 30 is provided inside the expansion cavity 103, and the filter element 51 is a second filter screen 512. The second filter screen 512 is an annular grooved filter screen, which is arranged around the outside of the flow-diverting cone 30. A second filter cavity 5121 is formed between the second filter screen 512 and the plate 20, and multiple flow-diverting holes 201 are all connected to the second filter cavity 5121. The flow-diverting cone 30 allows the fluid to be initially diverted after entering the expansion cavity 103. The conical structure of the flow-diverting cone 30 can uniformly guide the fluid in all directions of the expansion cavity 103, ensuring that the fluid is evenly distributed on the surface of the second filter screen 512, reducing turbulence in the expansion cavity 103, optimizing the fluid distribution path, and thus improving the distribution efficiency. The annular structure ensures that the filter screen evenly surrounds the flow-diverting cone 30, ensuring that the fluid must be fully filtered before entering the flow-diverting holes 201, thus enhancing the filtration efficiency. Furthermore, the second filter screen 512 is located behind the top of the flow divider cone 30, forming a second filter chamber 5121 with the plate 20, which can filter the fluid passing through the flow divider cone 30. Because the fluid in the second filter chamber 5121 maintains a uniform flow velocity and flow rate under the combined action of the flow divider cone 30 and the second filter screen 512, the fluid flow rate received by each flow divider orifice 201 is relatively balanced. This uniform distribution design can improve the flow divider accuracy of the entire system, and has significant advantages, especially in fluid transport systems with high precision requirements.

[0196] Further understanding is that the plate 20 is provided with reinforcing ribs 23, and the filter element 51 is connected to the plate 20 through the reinforcing ribs 23. The reinforcing ribs 23 are typically rib-like structures provided on the plate 20 to enhance the support and fixation of the filter element 51. The reinforcing ribs 23 can be designed to be distributed circumferentially along the filter element 51 to ensure that the overall structure of the filter element 51 will not deform or detach under fluid pressure. As shown in Figure 2, in the first embodiment, the reinforcing ribs 23 are distributed in a ring around the circumferential edge of the plate 20, and the first filter screen 511 is connected to the circumferential edge of the plate 20 through the reinforcing ribs 23. As shown in Figure 4, in the second embodiment, there are two reinforcing ribs 23. One reinforcing rib 23 is distributed in a ring around the circumferential edge of the plate 20, and the outer ring of the second filter screen 512 is connected to this reinforcing rib 23. The other reinforcing rib 23 is also distributed in a ring at the connection between the plate 20 and the flow divider cone 30, and the inner ring of the second filter screen 512 is connected to this reinforcing rib 23.

[0197] It is understandable that the filter element 51 is connected to the reinforcing rib 23 by welding, and the reinforcing rib 23 is also welded to the plate 20. This welding method provides a strong and stable fixing effect, which is suitable for high pressure or high flow rate fluid conditions.

[0198] Furthermore, the flow distribution assembly also includes an adjustment structure disposed inside the inlet pipe 301. This adjustment structure is used to mix the refrigerant flowing from the injection cavity 101 into the expansion cavity 103. The adjustment structure can be configured as an orifice plate 80, with through holes, and the plate body 20 is adapted to be disposed inside the injection cavity 101. The number of through holes is greater than or equal to the number of flow distribution holes 201. By providing the inlet pipe 301 and the orifice plate 80, preliminary flow distribution and mixing can be performed before the refrigerant enters the distributor 100, which helps to further improve the refrigerant mixing effect in conjunction with the flow distribution cone 30 described below. Optionally, the number of through holes is the same as the number of flow distribution holes 201. This effectively ensures the mixing effect of the refrigerant after it flows through the through holes, and also cooperates with the flow distribution holes 201 to ensure the refrigerant flow effect.

[0199] Furthermore, in some embodiments of this application, when there is only one plate 20, the diversion assembly further includes a connector 40. The connector 40 is disposed on the plate 20 and has multiple insertion holes 410, each insertion hole 410 corresponding to and connected to a diversion hole 201. The first connecting pipe 200 is connected to the distributor 100 through the connector 40, and one end of the first connecting pipe 200 is inserted into each insertion hole 410, and the diversion hole 201 is connected to the first connecting pipe 200.

[0200] By providing a connector 40 on the distributor 100 for inserting the first connecting pipe 200 and ensuring communication between the first connecting pipe 200 and the diversion hole 201 of the distributor 100, the connector 40 with the insertion hole 410 provides positioning for the insertion of the first connecting pipe 200, thus helping to solve the alignment problem between multiple components (the first connecting pipe 200 and the diversion hole 201) during mating. Furthermore, it reduces the structural requirements of the distributor 100 for the insertion of the first connecting pipe 200, significantly reducing the weight of the distributor 100 and achieving lightweighting of the distributor 100, thereby achieving lightweighting of the diversion component and reducing component costs. Thirdly, by extending the depth of the insertion hole 410, the contact area between the connector 40 and the first connecting pipe 200 is increased, thereby improving the connection effect between the distributor 100 and the first connecting pipe 200 and enhancing subsequent welding strength, thus helping to solve the problem of poor connection effect between the existing distributor 100 and the connecting pipe.

[0201] At this point, the connecting part 41 and the cylinder 42 are integrally formed. The connecting part 41 is plate-shaped, and one side of the connecting part 41 is attached to the plate 20. The top surface of the connecting part 41 can mate with the inner wall or top surface of the mounting part 12 to form a contact point required for welding, and the peripheral surface of the connecting part 41 can mate with the mounting surface of the plate 20 to form a welding surface required for welding. Meanwhile, the cylinder 42 has a cylindrical structure and forms the aforementioned insertion hole 410. The first connecting tube 200 is suitable for insertion into the cylinder 42. The peripheral surface of the first connecting tube 200 can mate with the end face of the cylinder 42 opposite to the connecting part 41 to form a welding surface. Through the welding of the first connecting tube 200 to the cylinder 42 and the welding of the connecting part 41 to the distributor 100, the connection and fixation of the first connecting tube 200 and the distributor 100 can be achieved, which helps to improve the structure of the distributor 100 and achieve weight reduction.

[0202] It should be noted that, due to the setting of the cylinder 42, the insertion depth of the first connecting pipe 200 can be effectively guaranteed or increased, and the thickness requirement of the connecting part 41 for the insertion of the first connecting pipe 200 can be reduced, which helps to reduce the weight of the connecting part 40. Thus, on the basis of ensuring the connection between the first connecting pipe 200 and the distributor 100, the flow distribution component can be made lighter and the component cost can be reduced.

[0203] In some embodiments of this application, there is one connecting part 41 and multiple cylinders 42, and the multiple cylinders 42 are arranged at circumferential intervals along the inlet hole 111.

[0204] By defining the connector 40 as having a connecting part 41 and multiple cylinders 42, the structural strength of the connector 40 can be effectively increased. At the same time, by providing a connecting part 41, a connector 41 can be adapted to connect with the distributor 100, so as to achieve the alignment of the insertion hole 410 and the diversion hole 201 when they are mated, thereby achieving the concentric setting of the first connecting pipe 200 and the diversion hole 201, which helps to make the refrigerant flow more uniform and ensures a better mixing effect.

[0205] It should be understood that, as shown in Figures 28 and 29, the mounting portion 12 of the housing 10 forms a cylindrical mounting cavity 104, and the connecting portion 41 is set in the shape of a circular plate and is adapted to connect with the mounting cavity 104. At this time, the insertion hole 410 of the cylinder 42 is concentrically arranged with the diversion hole 201, and when the first connecting pipe 200 is set in the insertion hole 410, the first connecting pipe 200 and the diversion hole 201 are concentrically arranged. This arrangement helps to solve the alignment problem between multiple accessories (the first connecting pipe 200 and the diversion hole 201) during the fit. At the same time, multiple cylinders 42 are arranged circumferentially along the inflow hole 111, so that multiple first connecting pipes 200 are arranged circumferentially along the inflow hole 111. With the diversion cone 30 described below, the diversion effect of the distributor 100 can be effectively improved. Optionally, multiple cylinders 42 are arranged at equal intervals along the circumference of the inlet hole 111. On the one hand, this helps to further improve the fit between the first connecting pipe 200 and the diverting cone 30; on the other hand, it can form sufficient welding space to ensure the connection effect between the first connecting pipe 200 and the cylinder 42.

[0206] Furthermore, the number of connecting parts 41 is the same as the number of diversion holes 201, and each connecting part 41 is provided with a corresponding cylinder 42.

[0207] By limiting the number of connecting parts 41 to be the same as the number of diversion holes 201, the number of connecting parts 41 can be multiple. At this time, each connecting part 41 is provided with a corresponding cylinder 42. With this setting, the connecting part 40 can be transformed into a standardized sample that is only related to the pipe diameter specification, which helps to simplify the components of the diversion assembly and improve welding reliability.

[0208] It should be understood that, as shown in Figure 30, in this embodiment, the first end face of the mounting part 12 and the top surface of the plate 20 are located on the same plane. Simultaneously, there are multiple connectors 40, and each connector 40 corresponds to one of the multiple diversion holes 201. Each connector 40 includes a cylindrical body 42 and a connecting part 41. The cylindrical body 42 has a circular tube structure, and the connecting part 41 is located at one end of the cylindrical body 42 and extends radially along the cylindrical body 42. The connecting part 41 is fitted and connected to the plate 20. In this case, the connector 40 can be designed according to the pipe diameter of the first connecting pipe 200, the overlapping surface of the welding process (skirt for the connecting part 41), and the depth of the cylindrical body 42, so that the connector 40 forms a standardized sample related to the pipe diameter specification, which helps to simplify the components of the diversion assembly and improve the reliability of welding.

[0209] It should be noted that setting the connector 40 as a standardized sample can, on the one hand, increase the contact area between the connector 41 and the top surface of the plate 20, thereby improving the convenience of welding; on the other hand, it can reduce the correlation between the connector 40 and the distributor 100, thereby improving the applicability of the connector 40 and helping to reduce the manufacturing cost of the diversion assembly.

[0210] Furthermore, the first connecting pipe 200 includes a regulating pipe section 230 and a flow pipe section 240, the flow pipe section 240 being connected to the regulating pipe section 230, and the flow area of ​​the regulating pipe section 230 being smaller than the flow area of ​​the flow pipe section 240.

[0211] It is understood that the first connecting pipe 200 is used to connect the expansion cavity 103 with each heat exchange tube of the heat exchanger. One end of the first connecting pipe 200 can be inserted into the diversion hole 201 for fixation, or the end face of the first connecting pipe 200 can be welded to the plate surface of the plate body 20 on the side away from the expansion cavity 103 for fixation. The first connecting pipe 200 has an regulating pipe section 230 that can regulate the flow rate. The regulating pipe section 230 can be located at the end of the first connecting pipe 200 near the shell 10, or in the middle of the first connecting pipe 200. The regulating pipe section 230 can be a diameter reduction structure, so that the diameter of the first connecting pipe 200 is reduced to adjust the flow area. As shown in Figures 31 to 33, the diameter of part of the pipe section can be narrowed by stamping when processing the first connecting pipe 200. For example, the diameter of the end of the first connecting pipe 200 inserted into the diversion hole 201 can be narrowed to form the regulating pipe section 230. The regulating pipe section 230 can also be achieved by setting an regulating element 2302 inside the body 2301 of the first connecting pipe 200. The flow area of ​​the first connecting pipe 200 can be adjusted by adjusting the regulating hole 2303 on the regulating element 2302, which can also achieve the function of adjusting and distributing the flow according to the actual situation, thereby replacing the function of the original diversion hole 201 plate. This makes the overall structure more compact, easier to process and reduces costs.

[0212] The flow regulation function is achieved through the regulating pipe section 230 of the first connecting pipe 200. The flow area of ​​the regulating pipe section 230 can be preset to undertake the function of fluid flow regulation. The first connecting pipe 200 is fixed through the diversion hole 201 on the plate 20 and communicates with the expansion cavity 103 inside the housing 10. The original diversion hole plate responsible for diversion and flow regulation can be eliminated, making the structure more compact, reducing production costs and facilitating installation.

[0213] Furthermore, the diversion assembly also includes a first adapter 60, one end of which is connected to the second connecting section 260, and the other end of which is used to be inserted into the inlet 2001 of the first heat exchanger.

[0214] By setting the first adapter 60, the rigidity of the first connecting pipe 200 can be ensured while improving the connection effect of the first connecting pipe 200. The setting of the first adapter 60 helps to reduce the occurrence of situations where the first connecting pipe 200 cannot be inserted into the first heat exchanger. At the same time, it also enables the first connecting pipe 200 to be compatible with the inlet 2001 of the first heat exchanger of different sizes, thereby improving the applicability of the flow distribution assembly and improving the connection method between the first connecting pipe 200 and the inlet 2001.

[0215] It should be understood that in this embodiment, the inlet 2001 of the first heat exchanger is fixed to the first connecting pipe 200 by welding. However, when the materials of the inlet 2001 of the first heat exchanger and the first connecting pipe 200 are different, such as the first connecting pipe 200 being a stainless steel pipe while the first heat exchanger is a copper or aluminum pipe, a first adapter 60 is provided between the first connecting pipe 200 and the first heat exchanger to facilitate welding. The material of the first adapter 60 is the same as that of the inlet 2001 of the first heat exchanger, which helps to improve the connection effect between the flow distribution component and the first heat exchanger.

[0216] It is important to further understand that the connection between the first heat exchanger and the first adapter 60 can be achieved through methods including, but not limited to, plugging, screwing, welding, snap-fitting, and bonding. As shown in Figure 6, in some embodiments of this application, one end of the first adapter 60 is inserted into the second connecting section 260 and is fixedly connected to it. In this case, "fixedly connected" refers to welding the end face of the second connecting section 260 facing the first adapter 60 to the circumferential surface of the first adapter 60. In actual operation, the first heat exchanger and the first adapter 60 are pre-connected and fixed using a welding process (manual welding or automated welding). At this time, the pipe diameter and wall thickness of the first adapter 60 can be the same as or different from those of the connecting pipe.

[0217] Furthermore, the first connecting pipe 200 includes a rigid portion, the length of which is in the range of 60%-95% of the total length of the first connecting pipe 200. By limiting at least a portion of the first connecting pipe 200 to be rigid, it is less prone to deformation, which helps to solve the springback problem during welding of the connecting pipe to the heat exchanger, thereby facilitating automated welding of the heat exchanger and the connecting pipe. Simultaneously, by limiting the flow direction of the first connecting section 250 to intersect with the flow direction of the second connecting section 260, the distance between the distributor 100 and the first heat exchanger is reduced. Combined with the limiting of the rigidity of the first connecting pipe 200, the connection effect between the distributor 100 and the first heat exchanger can be further improved, thereby enhancing the performance of the distribution assembly.

[0218] It should be noted that at least a portion of the first connecting pipe 200 is rigid, where rigidity refers to its resistance to deformation. Optionally, the first connecting pipe 200 is entirely made of a material with high rigidity, such as stainless steel or carbon steel. In this case, the first connecting pipe 200 is not easily deformed and can effectively solve the springback problem during welding of the connecting pipe to the heat exchanger. Alternatively, at least a portion of the first connecting pipe 200 is made of a material with high rigidity. In this case, the first connecting pipe 200 can also effectively solve the springback problem during welding of the connecting pipe to the heat exchanger.

[0219] It should be understood that the first connecting pipe 200 has a flexible portion and a rigid portion. The rigid portion is used to connect with the distributor 100 and the first heat exchanger, thereby ensuring the welding of the first connecting pipe 200 to the distributor 100 or the first heat exchanger. Simultaneously, the flexible portion is used to adjust the relative positions of the first connecting section 250 and the second connecting section 260, thereby enabling better adaptation and connection with the distributor 100 or the first heat exchanger.

[0220] It should be noted that, due to cumulative tolerance considerations, all first connecting pipes 200 are made of a high-rigidity material, which may lead to situations where the first connecting pipe 200 cannot be inserted into the first heat exchanger. By limiting the proportion of the flexible portion in the first connecting pipe 200, on the one hand, the first connecting pipe 200 has a certain degree of flexibility, allowing for minor adjustments to its insertion position; on the other hand, it ensures the rigidity of the first connecting pipe 200, preventing springback during welding to the first heat exchanger.

[0221] It is important to understand that the flexible portion is the less rigid part, and therefore more prone to deformation compared to the rigid portion. In this embodiment, the flexible portion is made of copper or other materials. Optionally, the flexible portion is made of copper. The flexible portion can be positioned between the first connecting section 250 and the second connecting section 260, meaning that all or part of the bent section can be made of copper, or the flexible portion can be positioned at both ends of the first connecting pipe 200, i.e., at least one of the first connecting section 250 and the second connecting section 260 is a flexible portion. The second connecting section 260 will be described as an example below. The second connecting section 260 can be entirely made of copper, or the connection between the second connecting section 260 and the bent section can be made of copper, or the insertion end of the second connecting section 260 and the first heat exchanger can be made of copper, thus enabling the insertion connection of the first connecting pipe 200. Accordingly, the configuration of the first connecting section 250 can refer to the configuration of the second connecting section 260.

[0222] Furthermore, the first connecting pipe 200 has a first connecting section 250 and a second connecting section 260. The first connecting section 250 is used to communicate with the first heat exchanger of the HVAC equipment, and the second connecting section 260 is connected to the distributor 100. The extending direction of the first connecting section 250 intersects with the extending direction of the second connecting section 260. By limiting the flow direction of the first connecting section 250 to intersect with the flow direction of the second connecting section 260, it helps to reduce the distance between the distributor 100 and the first heat exchanger. Combined with the stiffness limitation of the first connecting pipe 200, the connection effect between the distributor 100 and the first heat exchanger can be further improved, thereby improving the performance of the distribution assembly.

[0223] It should be understood that the first connecting pipe 200 has a first connecting section 250, a second connecting section 260 and a bend section, wherein the first connecting section 250 and the second connecting section 260 are both straight sections, and the bend section is connected and disposed between the first connecting section 250 and the second connecting section 260 to change the flow direction of the refrigerant. The first connecting section 250 is connected to the expansion cavity 103 through the diversion hole 201 of the distributor 100, and the second connecting section 260 is connected to the first heat exchanger of the HVAC equipment. At the same time, the extension direction of the first connecting section 250 intersects the extension direction of the second connecting section 260. Optionally, the extension direction of the first connecting section 250 is perpendicular to the extension direction of the second connecting section 260. By defining the structure and material of the first connecting pipe 200, on the one hand, the first connecting pipe 200 is less prone to deformation. On the other hand, the layout can be arranged according to the space between the distributor 100 and the first heat exchanger, thereby improving the connection effect between the distributor 100 and the first heat exchanger. This setting helps to further solve the springback problem when welding the connecting pipe and the heat exchanger, and realize the automated welding of the heat exchanger and the connecting pipe.

[0224] A second aspect of this application also provides a heating, ventilation and air conditioning (HVAC) device 1, which includes a first heat exchanger 2000 and the aforementioned diversion assembly 1000, wherein a first connecting pipe 200 of the diversion assembly 1000 is connected to the first heat exchanger 2000.

[0225] The HVAC equipment 1 proposed in this application has the technical advantages of the aforementioned diversion component 1000, which will not be elaborated here.

[0226] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A flow distribution assembly for use in HVAC equipment, wherein, include: A housing having an inlet hole and an expansion cavity communicating with the inlet hole, the expansion cavity having an opening on the side opposite to the inlet hole, and the inner diameter of the expansion cavity gradually increasing from the inlet hole to the opening; A plate body, which is disposed on the housing and seals the opening, has multiple diversion holes; The first connecting pipe is a plurality of the first connecting pipes, which are respectively connected to the plate body, and each of the diversion holes is connected to one of the first connecting pipes. An inlet pipe is connected to the housing and communicates with the inflow hole. The inlet pipe and the housing cooperate to form an injection cavity, a flow stabilizing cavity and an expansion cavity that are connected in sequence. The inner diameter of the injection cavity is larger than the inner diameter of the flow stabilizing cavity, and the inner diameter of the flow stabilizing cavity is smaller than or equal to the diameter of the inflow hole.

2. The shunt component according to claim 1, wherein, The housing is provided with a first insertion part, which defines the inflow hole, and the inlet pipe is adapted to and connected to the first insertion part.

3. The shunt component according to claim 2, wherein, An insertion section is provided at one end of the inlet pipe facing the housing, and at least a portion of the insertion section passes through the inflow hole and extends into the interior of the expansion cavity; Along the direction of the inlet pipe facing the housing, the first end of the insertion section is connected to the injection cavity, the second end of the insertion section is closed and located inside the expansion cavity, and along the circumference of the insertion section, a plurality of outflow holes are provided on the side wall of the insertion section, the plurality of outflow holes are located inside the expansion cavity and are spaced apart from the plate.

4. The shunt component according to claim 1, wherein, The inlet pipe and the shell are integrally formed.

5. The shunt component according to claim 1, wherein, The end of the inlet pipe facing away from the housing is closed, and the wall of the inlet pipe is provided with a side hole; The flow distribution assembly also includes an inlet pipe, one end of which is connected to the inlet pipe through the side hole, and the other end of which is used to supply refrigerant. The inlet pipe is tangential to the inlet pipe.

6. The shunt component according to claim 1, wherein, The splitter component also includes: The inlet pipe has a first end connected to the inlet pipe and communicating with the injection cavity, and a second end for supplying refrigerant. The inlet pipe has a turbulence structure for mixing the refrigerant flowing from the second end of the inlet pipe to the inlet pipe.

7. The shunt assembly according to any one of claims 1 to 6, wherein, The splitter component also includes: A flow divider cone is disposed on the plate and coaxially with the inlet hole. The flow divider cone is used to guide the refrigerant from the inlet hole to the flow divider hole.

8. The shunt assembly according to any one of claims 1 to 7, wherein, The diversion assembly further includes a flow-dispersing element, which is disposed between the inlet hole and the diversion hole; And / or, the diversion assembly further includes an adjustment structure disposed inside the inlet pipe, the adjustment structure being used to mix the refrigerant flowing from the incident cavity into the expansion cavity.

9. The shunt assembly according to any one of claims 1 to 8, wherein, The plate body includes: A first plate is disposed inside the housing and seals the opening; the first plate has a plurality of the diversion holes. The second plate is connected to and disposed on the side of the first plate away from the expansion cavity. The second plate has multiple insertion holes, the diameter of which is larger than the diameter of the diversion hole. The first connecting pipe is inserted into the insertion hole and communicates with the diversion hole.

10. The shunt assembly according to any one of claims 1 to 8, wherein, The plate is provided with a plurality of plug-in parts, which are arranged circumferentially along the inflow hole. The plug-in parts are adapted to be connected to the first connecting pipe. The plug-in parts have an extension structure protruding from the plate. The extension structure is provided with the diversion hole, which is concentrically arranged with the first connecting pipe.

11. The shunt assembly according to any one of claims 1 to 8, wherein, The splitter component also includes: A connector is disposed on the side of the plate away from the expansion cavity. The connector has multiple insertion holes, each of which is connected to one of the diversion holes. The first connecting pipe is connected to the plate body through the connector, and one end of the first connecting pipe is inserted into each of the insertion holes, and the diversion hole is connected to the first connecting pipe.

12. The shunt assembly according to any one of claims 1 to 11, wherein, The first connecting pipe includes an regulating pipe section and a flow pipe section, the flow pipe section being connected to the regulating pipe section, and the flow area of ​​the regulating pipe section being smaller than the flow area of ​​the flow pipe section.

13. The shunt assembly according to any one of claims 1 to 12, wherein, The splitter component also includes: The first adapter has one end connected to the end of the first connecting pipe away from the plate, and the other end of the first adapter is used to communicate with the first heat exchanger of the HVAC equipment.

14. The shunt assembly according to any one of claims 1 to 13, wherein, The first connecting pipe includes a rigid portion, and the length of the rigid portion is in the range of 60%-95% of the length of the first connecting pipe.

15. The shunt assembly according to claim 14, wherein, The first connecting pipe has a first connecting section and a second connecting section. The first connecting section is connected to the plate body, and the second connecting section is used to communicate with the first heat exchanger of the HVAC equipment. The extension direction of the first connecting section intersects the extension direction of the second connecting section.

16. A heating, ventilation, and air conditioning (HVAC) device, wherein, The heating, ventilation, and air conditioning equipment includes: First heat exchanger; Second heat exchanger; The flow splitter assembly as described in any one of claims 1-15, wherein the first connecting pipe is connected to the first heat exchanger, and the inlet pipe is connected to the second heat exchanger.

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