Flow dividing assembly, production method of flow dividing assembly and heating and ventilation equipment

Abstract

The invention provides a flow dividing assembly, a production method of the flow dividing assembly and heating and ventilation equipment, the flow dividing assembly comprises a shell, a plate body and an inlet pipe, an expansion cavity is defined in the shell, the expansion cavity is provided with an opening, the shell is further provided with an inflow hole communicating with the expansion cavity, and the inflow hole is located in the end, away from the opening, of the expansion cavity; the plate body is installed on the shell and seals the opening, the plate body is provided with a plurality of flow dividing holes, and the flow dividing holes are communicated with the expansion cavity; one end of the inlet pipe is connected with the shell and communicated with the inflow hole, and the other end of the inlet pipe is used for introducing fluid; the shell and the inlet pipe are of an integrated metal plate structure. The shell and the inlet pipe are integrally formed by a sheet metal part through a sheet metal machining process, and particularly, the shell and the inlet pipe can be manufactured in a mode of extrusion forming of a cylindrical sheet metal part or coiling forming of a sheet metal part in a prefabricated shape, so that the whole structure is few in connecting points, higher in structural strength, higher in production efficiency and free of leakage points, and parts are reduced. And the hidden danger of liquid leakage during use is reduced.

Description

Technical Field

[0001] This invention relates to the field of HVAC equipment technology, and in particular to a flow divider assembly, a method for producing the flow divider assembly, and HVAC equipment. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Existing heat exchanger flow distribution assemblies include multiple components such as the shell, joints, and flow distribution orifice plates. They have complex structures, numerous parts, low production cost efficiency, and significant leakage risks. Summary of the Invention

[0004] The purpose of this invention is to at least solve the problems of existing HVAC equipment, such as complex structure, low production cost and efficiency, and significant leakage risks. This purpose is achieved through the following technical solution:

[0005] A first aspect of the present invention provides a shunt assembly comprising:

[0006] The housing has an internally defined expansion cavity with an opening. The housing also has an inflow hole that communicates with the expansion cavity and is located at the end of the expansion cavity opposite to the opening.

[0007] A plate body is mounted on the housing and closes the opening. The plate body has multiple diversion holes that communicate with the expansion cavity.

[0008] An inlet pipe, one end of which is connected to the housing and communicates with the inflow hole, and the other end of which is used to introduce fluid;

[0009] The housing and the inlet pipe are integral sheet metal structures.

[0010] The diversion assembly proposed in the first aspect of this invention integrates the housing and inlet pipe into a single sheet metal part through sheet metal processing. Specifically, it can be manufactured by extruding a cylindrical sheet metal part or rolling a pre-formed sheet metal part, resulting in fewer connection points, higher structural strength, fewer parts, and higher production efficiency. Furthermore, since the housing and inlet pipe are an integral structure, there are no leakage points, reducing the risk of leakage during use.

[0011] In addition, the shunt assembly according to the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, a first cavity and a second cavity are formed coaxially within the inlet pipe, the first cavity is connected to the inlet hole through the second cavity, and the flow area of ​​the second cavity is smaller than the flow area of ​​the first cavity.

[0013] In some embodiments of the present invention, the expansion cavity has a rotating body structure, the cross-section of the expansion cavity is hemispherical along the axial direction of the expansion cavity, and the diameter of the expansion cavity gradually increases along the flow direction of the inlet hole.

[0014] In some embodiments of the present invention, the outer edge of the plate facing the expansion cavity is provided with a mounting groove, the mounting groove is arranged around the axis of the inflow hole, and the end of the housing opposite to the inflow hole is installed in the mounting groove.

[0015] In some embodiments of the present invention, the end of the expansion cavity with the opening is frustoconical, and the diameter of the end of the expansion cavity with the opening gradually increases along the flow direction of the inflow hole. The plate is embedded in the opening and is adapted to the shape of the expansion cavity.

[0016] In some embodiments of the present invention, the axial direction of the diversion hole is set at an angle to the axial direction of the inflow hole, and along the flow direction of the diversion hole, the axial direction of the diversion hole is inclined in a direction away from the axis of the inflow hole.

[0017] In some embodiments of the present invention, the plate body includes a first plate body and a second plate body disposed opposite to each other. The first plate body is disposed in the expansion cavity, and the second plate body is connected to the housing and closes the opening. The first plate body is provided with a plurality of diversion holes, and the second plate body is provided with a plurality of insertion holes. The insertion holes are coaxially arranged with the diversion holes, and the diameter of the insertion holes is larger than the diameter of the diversion holes. The diversion assembly further includes a first connecting pipe. The first end of the first connecting pipe is inserted into the insertion hole and communicates with the diversion hole. The end face of the first end is connected to the plate surface of the second plate body on the side opposite to the expansion cavity.

[0018] In some embodiments of the present invention, the inlet pipe is closed at one end away from the housing, the inlet pipe wall is provided with a side hole, the side hole is connected to the first pipe cavity, the flow splitting assembly further includes an incoming flow pipe, one end of the incoming flow pipe is connected to the inlet pipe through the side hole, the other end of the incoming flow pipe is used for fluid inflow, and the axial direction of the incoming flow pipe is tangent to the circumferential direction of the inlet pipe.

[0019] In some embodiments of the present invention, the flow diversion assembly further includes an inlet pipe, one end of which is connected to the inlet pipe and the other end of which is used to allow fluid to flow in. At least a portion of the inner wall of the inlet pipe has a threaded structure, which is configured to extend helically along the axial direction of the inlet pipe.

[0020] In some embodiments of the present invention, at least a portion of the inlet pipe is U-shaped, the inlet pipe includes a first straight pipe section, a bend section and a second straight pipe section connected in sequence, the first straight pipe section and the second straight pipe section are arranged parallel to each other, one end of the first straight pipe section away from the bend section is connected to the inlet pipe, the threaded structure includes a first threaded section and a second threaded section, the first threaded section is disposed on the inner wall of the first straight pipe section and the second threaded section is disposed on the inner wall of the second straight pipe section.

[0021] In some embodiments of the present invention, the flow splitting assembly further includes a flow splitting cone, the large-diameter end of which is connected to the plate body, the small-diameter end of which is disposed in the expansion cavity, the flow splitting cone being coaxially disposed with the inflow hole and along the axial direction of the inflow hole, the distance between the small-diameter end of the flow splitting cone and the inflow hole being L1, the diameter of the inflow hole being D, and the ratio of L1 to D ranging from 0 to 5.

[0022] A second aspect of the present invention provides a method for manufacturing a shunt assembly for producing the shunt assembly proposed in the first aspect of the present invention, comprising the following steps:

[0023] Provide sheet metal parts, wherein the sheet metal parts are flat;

[0024] The sheet metal part is stamped into an unfolded cylindrical shape, and the stamped sheet metal part is rolled into a cylinder to form the expansion cavity and the inlet pipe cavity. Alternatively, the sheet metal part is rolled into a cylindrical structure, and the rolled sheet metal part is extruded to form the expansion cavity and the inlet pipe cavity.

[0025] The second aspect of this invention proposes a method for manufacturing a diversion assembly that integrally forms the housing and inlet pipe of the diversion assembly from a single sheet metal part using sheet metal processing. Specifically, this can be achieved by extruding a cylindrical sheet metal part or rolling a pre-formed sheet metal part, resulting in fewer connection points, higher structural strength, fewer parts, and higher production efficiency. Furthermore, since the housing and inlet pipe are an integral structure, there are no leakage points, reducing the risk of leakage during use.

[0026] In some embodiments of the present invention, the step of extruding the sheet metal part after rolling to form the expansion cavity and the inlet pipe cavity includes any one of the following steps:

[0027] The two ends of the sheet metal part after the roll are stamped to form the expansion cavity and the cavity of the inlet pipe;

[0028] The circumference of the sheet metal part after the roll is spun to form the expansion cavity and the cavity of the inlet pipe.

[0029] A third aspect of the present invention provides a heating, ventilation, and air conditioning (HVAC) device including the diversion component proposed in the first aspect of the present invention.

[0030] The third aspect of this invention proposes a HVAC equipment with a single-piece flow distribution assembly. The housing and inlet pipe of the flow distribution assembly are integrally formed from a single sheet metal part using sheet metal processing techniques. Specifically, this can be achieved by extruding a cylindrical sheet metal part or rolling a pre-formed sheet metal part, resulting in fewer connection points, higher structural strength, fewer parts, and higher production efficiency. Furthermore, since the housing and inlet pipe are a single unit, there are no leakage points, reducing the risk of leakage during use. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0032] Figure 1 A schematic diagram of the structure of a shunt assembly according to an embodiment of the present invention is shown.

[0033] Figure 2 A partial cross-sectional schematic diagram of a shunt assembly according to an embodiment of the present invention is shown schematically;

[0034] Figure 3 A schematic diagram of the refrigerant flow direction structure at the connection between the inlet pipe and the outlet pipe according to an embodiment of the present invention is shown.

[0035] Figure 4 A schematic diagram illustrating the connection between the inlet pipe (with threaded structure) and the outlet pipe according to an embodiment of the present invention is shown.

[0036] Figure 5 A schematic diagram of the inlet pipe (with threaded structure) according to an embodiment of the present invention is shown.

[0037] Figure 6 A schematic cross-sectional view of a plate body (with the insertion hole and the diversion hole integrated) according to an embodiment of the present invention is shown.

[0038] Figure 7 A schematic cross-sectional view of the plate and housing (with mounting groove) according to an embodiment of the present invention is shown.

[0039] Figure 8 A schematic cross-sectional view of the plate and housing (with mounting groove and flange structure) according to an embodiment of the present invention is shown.

[0040] Figure 9 A schematic cross-sectional view of the plate and shell (the plate has an angle) according to an embodiment of the present invention is shown.

[0041] Figure 10 A schematic cross-sectional view of the first plate and the second plate assembled with the housing according to an embodiment of the present invention is shown.

[0042] Figure 11 A schematic cross-sectional view of the assembly of a plate and a housing (with mounting groove and stepped structure) according to an embodiment of the present invention is shown.

[0043] Figure 12 A schematic diagram of the structure of a sheet metal part according to an embodiment of the present invention is shown.

[0044] Figure 13 A schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device according to an embodiment of the present invention is shown.

[0045] The attached figures are labeled as follows:

[0046] 1. Heating, ventilation, and air conditioning (HVAC) equipment;

[0047] 1000, Flow divider assembly; 2000, First heat exchanger; 3000, Second heat exchanger; 4000, Compressor; 5000, Refrigeration throttle valve; 6000, Four-way valve;

[0048] 10. Shell; 111. Inlet port; 103. Expansion cavity;

[0049] 20. Plate body; 201. Diversion hole; 21. First plate body; 22. Second plate body; 202. Insertion hole; 24. Flanged structure; 25. Mounting groove;

[0050] 30. Flow divider cone;

[0051] 200. First connecting pipe;

[0052] 301. Inlet pipe; 3012. Reduced diameter structure; 3013. Side hole; 3014. First lumen; 3015. Second lumen; 3016. Transition lumen;

[0053] 302. Inlet pipe; 3024. Threaded structure; 30241. First threaded section; 30242. Second threaded section; 3025. First straight pipe section; 3026. Bend section; 3027. Second straight pipe section; 3028. Narrowing structure.

[0054] 500, Sheet metal parts; 501, Notches. Detailed Implementation

[0055] 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.

[0056] 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 include 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.

[0057] 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.

[0058] 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 as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0059] like Figures 1 to 13 As shown, Figure 2 In this diagram, 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. Figure 4 In the middle, direction A indicates the axial direction of the inflow pipe 302. Figure 5 In this invention, L represents the thread depth, W represents the thread width, S represents the thread distance, and P represents the length of the first thread segment 30241. A first aspect of the invention proposes a flow-diverting assembly 1000, comprising a housing 10, a plate 20, and an inlet pipe 301. The housing 10 defines an expansion cavity 103 with an opening. The housing 10 also has an inflow hole 111 communicating with the expansion cavity 103, located at the end of the expansion cavity 103 away from the opening. The plate 20 is mounted on the housing 10 and closes the opening. The plate 20 has multiple flow-diverting holes 201 communicating with the expansion cavity 103. One end of the inlet pipe 301 is connected to the housing 10 and communicates with the inflow hole 111. The other end of the inlet pipe 301 is used to introduce fluid. The housing 10 and the inlet pipe 301 are an integral sheet metal structure.

[0060] It is 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 is provided with 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 to form 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. The shape of the plate 20 matches the opening and can be a circular plate structure. Multiple diversion holes 201 are arranged in a circular array on the plate 20, or multiple diversion holes 201 are arranged in a ring at intervals. A first connecting pipe 200 can be inserted into the diversion hole 201 to communicate with each heat exchange tube of the heat exchanger, or the first connecting pipe 200 can be connected to the plate 20 by welding. The diversion hole 201 can also be set as a stepped hole structure, or a flange can be set on the plate 20 to make the connection area between the first connecting pipe 200 and the plate 20 larger and improve the reliability of the connection. The first connecting pipe 200 can be made of stainless steel or other high-rigidity pipe fittings, which facilitates connection with the plate 20 and has better reliability.

[0061] The diversion assembly 1000 proposed in the first aspect of the present invention integrally forms the housing 10 and the inlet pipe 301 from a single sheet metal part 500 using sheet metal processing technology. Specifically, it can be manufactured by extruding the cylindrical sheet metal part 500 or by rolling a pre-formed sheet metal part 500, resulting in fewer connection points, higher structural strength, fewer parts, and 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.

[0062] In some embodiments of the present invention, a first cavity 3014 and a second cavity 3015 are formed coaxially within the inlet pipe 301. The first cavity 3014 is connected to the inlet hole 111 through the second cavity 3015. The flow area of ​​the second cavity 3015 is smaller than the flow area of ​​the first cavity 3014.

[0063] Understandably, the flow area of ​​the first cavity 3014 is larger than that of the second cavity 3015, causing the fluid entering the first cavity 3014 from the inlet pipe 302 to slow down and mix thoroughly within the first cavity 3014. This improves the mixing uniformity of the refrigerant when the fluid is a two-phase gas-liquid refrigerant, thus providing a flow-dividing effect. The flow area of ​​the second cavity 3015 is reduced, forming a throat between the first cavity 3014 and the expansion cavity 103. This allows the mixed fluid to flow from the second cavity 3015 into the middle of the expansion cavity 103, where it is then diverted by the flow-dividing cone 30, further improving the flow-dividing effect. Specifically, both the first cavity 3014 and the second cavity 3015 can be cylindrical structures, and a frustum-shaped transition cavity can be provided between the two cavities to avoid sudden changes in flow resistance and improve flow efficiency.

[0064] In some embodiments of the present invention, the expansion cavity 103 has a rotating body structure, the cross section of the expansion cavity 103 is hemispherical along the axial direction of the expansion cavity 103, and the diameter of the expansion cavity 103 gradually increases along the flow direction of the inlet hole 111.

[0065] It is understood that the expansion cavity 103 can be a rotating structure such as a frustum, cone, or hemisphere, which, together with the flow-diverting holes 201 spaced apart along the circumference of the expansion cavity 103, and the inlet holes 111 and flow-diverting cones 30 arranged on the axis of the expansion cavity 103, makes the flow distribution more uniform. Specifically, the expansion cavity 103 can be hemispherical with spherical cavity walls, which makes the flow resistance smaller and the flow efficiency better. The inlet holes 111 can be located at the apex of the expansion cavity 103. The flow-diverting holes 201 are spaced apart along the circumference of the expansion cavity 103, and the line connecting the multiple flow-diverting holes 201 is coaxial with the expansion cavity 103, so that after the fluid flows into the expansion cavity 103 from the inlet holes 111, it can flow evenly to each flow-diverting hole 201, and after the flow rate is regulated by the flow-diverting holes 201, it flows into the heat exchanger through the first connecting pipe 200.

[0066] In some embodiments of the present invention, the outer edge of the plate 20 facing the expansion cavity 103 is provided with a mounting groove 25, the mounting groove 25 is arranged around the axis of the inflow hole 111, and the end of the housing 10 opposite to the inflow hole 111 is installed in the mounting groove 25.

[0067] It is understood that a mounting groove 25 can be provided around the edge of the plate 20 facing the expansion cavity 103. The mounting groove 25 can be arranged in a ring and extend around the axis of the plate 20, or the mounting groove 25 can include multiple parts and be spaced apart along the circumference of the plate 20. The shape of the mounting groove 25 matches the opening of the housing 10. The mounting groove 25 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 is abutted 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 fixedly connected with the mounting groove 25, which further improves the reliability of the connection between the plate 20 and the housing 10.

[0068] In some embodiments of the present invention, the expansion cavity 103 has an open end that is frustoconical in shape, and the diameter of the open end of the expansion cavity 103 gradually increases along the flow direction of the inlet hole 111. The plate 20 is embedded in the open end and is adapted to the shape of the expansion cavity 103.

[0069] It is understood that the opening of the expansion cavity 103 is frustum-shaped, with its smaller diameter end facing the inflow hole 111 and its larger diameter end open, making the expansion cavity 103 an inverted frustum shape. The cavity wall of the expansion cavity 103 at the opening is annular and angled to the axial direction of the expansion cavity 103. Along the flow direction of the inflow hole 111, the cavity wall is inclined away from the axis of the expansion cavity 103. The shape of the plate 20 is adapted to the frustum-shaped portion of the expansion cavity 103, that is, the side peripheral wall of the plate 20 is angled to the axial direction of the expansion cavity 103. The cavity wall is inclined away from the axis of the expansion cavity 103 along the flow direction of the inlet hole 111. The plate 20 can be embedded into the opening during installation and cooperate with the frustum portion of the expansion cavity 103. Since the cavity wall of the expansion cavity 103 is inclined relative to the axis, the cavity wall of the expansion cavity 103 can provide a certain support for the plate 20, thereby improving the reliability of the connection between the plate 20 and the housing 10. Specifically, the plate 20 can be further fixed to the housing 10 by interference fit or welding.

[0070] In some embodiments of the present invention, the axial direction of the diversion hole 201 is set at an angle 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 in a direction away from the axis of the inflow hole 111.

[0071] Understandably, 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 relative to the axes of the inflow hole 111 and the expansion cavity 103 for ease of processing. Specifically, 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 orifices of the diversion hole 201 more dispersed on the side of the plate 20 away from the expansion cavity 103, thus making 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 on the side of the plate 20 away from the expansion cavity 103 can also be set into a conical shape, and the angle between the plate surface on the side of the plate 20 away from the expansion cavity 103 and the radial direction of the expansion cavity 103 is 5°.

[0072] In some embodiments of the present invention, the plate body 20 includes a first plate body 21 and a second plate body 22 disposed opposite to each other. The first plate body 21 is disposed in the expansion cavity 103, and the second plate body 22 is connected to the housing 10 and closes the opening. The first plate body 21 is provided with a plurality of diversion holes 201, and the second plate body 22 is provided with a plurality of insertion holes 202. The insertion holes 202 are coaxially disposed 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 body 22 on the side away from the expansion cavity 103.

[0073] 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. Specifically, 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.

[0074] In some embodiments of the present invention, 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 thickness of the first plate 21 is L, the diameter of the diversion hole 201 is D, the diameter of the insertion hole 202 is D, wherein D≥D+2L.

[0075] Understandably, the thickness of the second plate 22 can be optimized to give it a certain thickness, thereby increasing the axial length of the insertion hole 202 on the second plate 22 to 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 ensures a suitable plate surface area between the insertion hole 202 and the diversion hole 201, facilitating the abutment and fixation of the end of the first connecting pipe 200 to the plate surface. Specifically, the above structure can increase the connection area between the first plate 21 and a rigid, thick-walled metal pipe such as stainless steel.

[0076] In some embodiments of the present invention, the ratio of the thickness of the second plate 22 to the diameter of the diversion hole 201 along the axial direction of the diversion hole 201 is greater than 0.5.

[0077] It is understandable that optimizing the thickness of the second plate 22 to give it a certain thickness will result in the axial length of the insertion hole 202 on the second plate 22 being greater than a certain value, thus making the connection between the first connecting pipe 200 and the insertion hole 202 more reliable.

[0078] In some embodiments of the present invention, the inlet pipe 301 is closed at one end away from the housing 10, and the pipe wall of the inlet pipe 301 is provided with a side hole 3013, which communicates with the first cavity 3014. The diversion assembly 1000 also includes an inlet pipe 302, one end of which is connected to the inlet pipe 301 through the side hole 3013, and the other end of which is used to allow fluid to flow in. The axial direction of the inlet pipe 302 is tangent to the circumferential direction of the inlet pipe 301.

[0079] It is understandable that one end of the inlet pipe 302 is tangentially connected to the side wall of the inlet pipe 301. The inlet pipe 301 and the distributor can be welded together or integrally formed. The inlet pipe 302 and the inlet pipe 301 can be welded together to introduce refrigerant into the distributor. The side hole 3013 can be set at the end of the inlet pipe 301 away from the distributor, and the diameter of the inlet pipe 301 can be set to be larger than that of the inlet pipe 302. This allows the refrigerant to enter the inlet pipe 301 tangentially. Under the action of centrifugal force, the refrigerant forms an annular flow inside the inlet pipe 301, flows circumferentially along the inlet pipe 301, and flows spirally towards the inlet hole 111. This allows the vapor and liquid phases of the refrigerant to be fully mixed here, achieving uniform distribution of the vapor and liquid phases of the refrigerant, reducing flow resistance, and improving flow efficiency.

[0080] In some embodiments of the present invention, a transition cavity 3016 is also formed inside the inlet pipe 301. The transition cavity 3016 is coaxially disposed between the first cavity 3014 and the second cavity 3015. Along the flow direction of the fluid in the inlet pipe 301, the flow area of ​​the transition cavity 3016 gradually decreases.

[0081] It is understood that a transition cavity 3016 can be provided between the first cavity 3014 and the second cavity 3015, and the transition cavity 3016 is frustum-shaped with its flow area gradually decreasing along the flow direction, so that the fluid from the first cavity 3014 enters the second cavity 3015 after passing through the transition cavity 3016. Providing the transition cavity 3016 makes the fluid flow smoother and reduces the flow resistance.

[0082] In some embodiments of the present invention, the first cavity 3014 is cylindrical, the diameter of the first cavity 3014 is D1, the diameter of the inlet pipe 302 is D2, and the ratio of D1 to D2 is in the range of 2 to 5.

[0083] Understandably, 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.

[0084] In some embodiments of the present invention, the first cavity 3014 is cylindrical, the axial length of the first cavity 3014 is D3, the diameter of the inlet pipe 302 is D2, and the ratio of D3 to D2 is in the range of 3 to 5.

[0085] 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.

[0086] In some embodiments of the present invention, the first cavity 3014 is cylindrical, the diameter of the first cavity 3014 is D1, the axial length of the first cavity 3014 is D3, and the ratio of D3 to D1 ranges from 2.5 to 0.6.

[0087] 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.

[0088] In some embodiments of the present invention, the diversion assembly 1000 further includes an inlet pipe 302, one end of which is connected to the inlet pipe 301, and the other end of which is used to allow fluid to flow in. At least a portion of the inner wall of the inlet pipe 302 has a threaded structure 3024, which is configured to extend in a spiral shape along the axial direction of the inlet pipe 302.

[0089] It is understood that one end of the inlet pipe 302 can be a constricted structure 3028, so as to be inserted into the end of the inlet pipe 301 away from the housing 10 to achieve communication between the inlet pipe 302 and the inlet pipe 301. The inner wall of the inlet pipe 302 is provided with a threaded structure 3024, which extends spirally along the axial direction of the inlet pipe 302. 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, or it can be part of the inlet pipe 302. The section is equipped with a bolt structure. For example, the inlet pipe 302 can be set as a U-shaped or S-shaped pipe with a bend, 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 the 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 equipped 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.

[0090] In some embodiments of the present invention, at least a portion of the inlet pipe 302 is U-shaped. The inlet pipe 302 includes a first straight pipe section 3025, a bend section 3026, and a second straight pipe section 3027 connected in sequence. The first straight pipe section 3025 and the second straight pipe section 3027 are arranged in parallel. One end of the first straight pipe section 3025 away from the bend section 3026 is connected to the inlet pipe 301. 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.

[0091] Understandably, the U-shaped extension of the inlet pipe 302 allows the gas-liquid two-phase refrigerant entering the pipe to collide with the pipe wall at the bend, causing the refrigerant to flow in different directions. This ensures thorough mixing of the gas-liquid two-phase refrigerant and improves its uniformity before reaching the distributor. Furthermore, the U-shape of the inlet pipe 302 minimizes its vertical height, reducing the likelihood of liquid and oil accumulation at the bottom of the heat exchanger downstream of the distributor assembly 1000 under lower cooling load conditions in HVAC equipment.

[0092] Specifically, 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 inlet 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.

[0093] In addition, 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.

[0094] In some embodiments of the present invention, the thread depth of the thread structure 3024 is L, the thread width of the thread structure 3024 is W, and 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 the thread structure 3024 along the radial direction of the inlet pipe 302, and 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 the thread depth and thread width of the thread structure 3024, the flow area of ​​the thread structure 3024 is made suitable, and the thread structure 3024 has a certain depth to improve the guiding effect of the thread structure 3024 on the refrigerant, thereby generating annular swirling flow of the refrigerant and fully mixing the gas-liquid two-phase refrigerant.

[0095] In some embodiments of the present invention, the thread pitch of the thread structure 3024 is S, the thread width of the thread structure 3024 is W, and 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.

[0096] In some embodiments of the present invention, the length of the first threaded section 30241 along the axial direction of the inlet pipe 302 ranges from 30 mm to 50 mm.

[0097] And / or, along the axial direction of the inlet pipe 302, the length of the second threaded section 30242 ranges from 30 mm to 50 mm.

[0098] 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.

[0099] In some embodiments of the present invention, the ratio of the length of the first threaded segment 30241 to the diameter of the inlet pipe 302 along the axial direction of the inlet pipe 302 ranges from 3 to 5.

[0100] 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.

[0101] 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.

[0102] In some embodiments of the present invention, along the flow direction of the inlet pipe 302, the rotation direction of the first threaded section 30241 is the same as that of the second threaded section 30242.

[0103] Alternatively, along the flow direction of the inlet pipe 302, the first threaded section 30241 extends in a counterclockwise spiral, and the second threaded section 30242 extends in a clockwise spiral.

[0104] 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. Specifically, 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 generate clockwise swirling flow after passing through the second threaded section 30242 and then counterclockwise swirling flow 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.

[0105] In some embodiments of the present invention, the diversion assembly 1000 further includes a diversion cone 30, the large-diameter end of which is connected to the plate 20, and the small-diameter end of which is disposed in the expansion cavity 103. The diversion cone 30 is coaxially disposed with the inflow hole 111 and along the axial direction of the inflow hole 111, the distance between the small-diameter end of the diversion cone 30 and the inflow hole 111 is L, the diameter of the inflow hole 111 is D, and the ratio of L to D ranges from 0 to 5.

[0106] It is understandable that the flow divider cone 30 is conical or pyramidal in shape. The flow divider cone 30 can also be a conical structure with a star-shaped cross-section. The flow divider cone 30 can be formed separately and then welded to the side of the plate 20 facing the expansion cavity 103. Alternatively, the flow divider cone 30 can be integrally formed with the plate 20 and machined on the plate 20 using a stamping process. The large-diameter end of the flow divider cone 30 is connected to the plate 20, and the small-diameter end of the flow divider cone 30 can face the inlet hole 111. Furthermore, the flow divider cone 30 is coaxially arranged with the expansion cavity 103 and the inlet hole 111. The minimum distance between the small-diameter end of the flow divider cone 30 and the inlet hole 111 along the axial direction of the inlet hole 111 should not be too large. Specifically, the ratio of the diameter of the inlet hole 111 to the minimum distance between the small-diameter end of the flow divider cone 30 and the inlet hole 111 along the axial direction of the inlet hole 111 is limited to a certain value, so that the minimum distance between the small-diameter end of the flow divider cone 30 and the inlet hole 111 along the axial direction of the inlet hole 111 is moderate. This allows the fluid entering the expansion chamber 103 from the inlet hole 111 to be immediately divided by the flow divider cone 30. This improves the flow division efficiency and makes the length of the housing 10 in the axial direction of the expansion chamber 103 shorter, resulting in a more compact structure.

[0107] In some embodiments of the present invention, the flow divider cone 30 and the plate 20 are integral structures.

[0108] Understandably, the flow divider cone 30 can be formed by stamping in the middle of the plate 20, resulting in higher structural strength and lower risk of leakage.

[0109] In some embodiments of the present invention, the flow divider cone 30 may be a pyramidal structure.

[0110] Understandably, the flow divider cone 30 is located within the expansion cavity 103, and the inlet hole 111 is positioned opposite the top of the flow divider cone 30, effectively guiding the fluid to act directly on the central region of the flow divider cone 30. This arrangement ensures that the fluid, upon entering the expansion cavity 103, first contacts the top of the flow divider cone 30, allowing the fluid to be evenly distributed across different guide surfaces of the flow divider cone 30. This not only reduces turbulence within the expansion cavity 103 but also ensures consistency in the velocity and flow rate of the fluid entering each guide surface. The flow divider cone 30 has a pyramidal structure, with at least three guide surfaces connected circumferentially and corresponding one-to-one with the flow divider holes 201. This design ensures that each guide surface specifically guides the fluid into its corresponding flow divider hole 201. Because the guide surfaces are continuously connected, they effectively guide the fluid 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 111, the fluid directly contacts the top of the flow divider cone 30 and is then smoothly dispersed into each flow divider 201 along the guide surface. Due to the correspondence between the guide surface and the flow divider 201, the fluid flow rate received by each flow divider 201 is relatively consistent, further improving the flow distribution uniformity of the system.

[0111] Alternatively, the flow divider cone 30 may have a star-shaped cone structure with multiple flow guides arranged along its circumference.

[0112] Understandably, the flow divider cone 30 has a triangular cross-section and multiple guide grooves arranged circumferentially along its length. These guide grooves extend along the height of the flow divider cone 30, and their radial cross-section can be arc-shaped or U-shaped. Each guide groove corresponds to a flow divider hole 201, ensuring that each guide groove specifically guides fluid into its corresponding flow divider hole 201. Because the guide grooves are continuously connected, they effectively guide fluid 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 hole 111, the fluid directly contacts the top of the flow divider cone 30 and is then smoothly dispersed along the guide grooves into each flow divider hole 201. Due to the correspondence between the guide grooves and the flow divider holes 201, the fluid flow rate received by each flow divider hole 201 is relatively consistent, further improving the uniformity of the system's flow distribution. Specifically, the small-diameter end of the flow divider cone 30 can be set in a hemispherical shape, so that the flow divider cone 30 does not generate stress concentration, thereby improving the strength of the structure and reducing the damage to the small-diameter end of the flow divider cone 30 under high flow rates.

[0113] A second aspect of the present invention provides a method for manufacturing a shunt assembly 1000, for producing the shunt assembly 1000 proposed in the first aspect of the present invention, comprising the following steps:

[0114] Sheet metal part 500 is provided, and sheet metal part 500 is in the form of a flat plate;

[0115] The sheet metal part 500 is stamped into an unfolded cylindrical shape, and the stamped sheet metal part 500 is rolled into a cylinder to form the cavity of expansion chamber 103 and inlet pipe 301. Alternatively, the sheet metal part 500 is rolled into a cylindrical structure, and the rolled sheet metal part 500 is extruded to form the cavity of expansion chamber 103 and inlet pipe 301.

[0116] The second aspect of this invention discloses a method for manufacturing the diversion assembly 1000, which integrally forms the housing 10 and inlet pipe 301 of the diversion assembly 1000 from a single sheet metal part 500 using sheet metal processing. Specifically, this can be achieved by extruding the cylindrical sheet metal part 500 or rolling a pre-formed sheet metal part 500, resulting in fewer connection points, higher structural strength, fewer parts, and higher production efficiency. Furthermore, since the housing 10 and inlet pipe 301 are an integral structure, there are no leakage points, reducing the risk of leakage during use.

[0117] In some embodiments of the present invention, 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:

[0118] 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;

[0119] 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.

[0120] It is understandable that the expansion cavity 103 and the inlet pipe 301 can be formed by spinning. Specifically, a sheet metal part 500 with a larger diameter can be rolled into shape 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.

[0121] The expansion cavity 103 and the inlet pipe 301 can also be formed by a roll welding process. Specifically, 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 cylinder is formed by a roll welding process. Finally, the connecting seam is welded and sealed to form the expansion cavity 103 and the inlet pipe 301.

[0122] The expansion cavity 103 and the inlet pipe 301 can also be formed by stamping at both ends. Specifically, 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.

[0123] A third aspect of the present invention provides a heating, ventilation, and air conditioning (HVAC) device, including the flow distribution assembly 1000 proposed in the first aspect of the present invention. The flow distribution assembly 1000 is connected to a first heat exchanger 2000 via a first connecting pipe 200 and to a refrigeration throttling valve 5000 via a second connecting pipe 300, wherein the refrigeration throttling valve 5000 includes an inlet pipe 301 and an outlet pipe 302 connected in sequence.

[0124] The HVAC equipment proposed in the third aspect of this invention has a diversion assembly 1000 with an integrally formed main body. The housing 10 and inlet pipe 301 of the diversion assembly 1000 are integrally formed from a single sheet metal part 500 using sheet metal processing technology. Specifically, this can be achieved by extruding a cylindrical sheet metal part 500 or by rolling a pre-formed sheet metal part 500, resulting in fewer connection points, higher structural strength, fewer parts, and higher production efficiency. Furthermore, since the housing 10 and inlet pipe 301 are an integral structure, there are no leakage points, reducing the risk of leakage during use.

[0125] It is understandable that, such as Figure 13 As shown, the HVAC equipment 1 proposed in the second aspect of the present invention can be an air conditioner. The HVAC equipment 1 includes the aforementioned distribution assembly 1000, first heat exchanger 2000, second heat exchanger 3000, compressor 4000, refrigerant throttling valve 5000, and four-way valve 6000. The refrigerant flows from the distribution assembly 1000 to the first heat exchanger 2000, where it absorbs heat from the environment and evaporates. The evaporated refrigerant flows to the compressor 4000 for pressurization, and then to the four-way valve 6000. The four-way valve 6000 is used to regulate the flow direction of the refrigerant to switch between the cooling and heating modes of the air conditioner.

[0126] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention 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 the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A shunt component, characterized in that, include: The housing has an internally defined expansion cavity with an opening. The housing also has an inflow hole that communicates with the expansion cavity and is located at the end of the expansion cavity opposite to the opening. A plate body is mounted on the housing and closes the opening. The plate body has multiple diversion holes that communicate with the expansion cavity. An inlet pipe, one end of which is connected to the housing and communicates with the inflow hole, and the other end of which is used to introduce fluid; The housing and the inlet pipe are integral sheet metal structures.

2. The shunt component according to claim 1, characterized in that, The inlet pipe forms a first cavity and a second cavity arranged coaxially. The first cavity is connected to the inlet hole through the second cavity. The flow area of ​​the second cavity is smaller than that of the first cavity.

3. The shunt component according to claim 1, characterized in that, The expansion cavity has a rotating structure. Along the axial direction of the expansion cavity, the cross-section of the expansion cavity is hemispherical, and along the flow direction of the inlet hole, the diameter of the expansion cavity gradually increases.

4. The shunt component according to claim 1, characterized in that, The plate body has a mounting groove on the outer edge of the side facing the expansion cavity. The mounting groove is arranged around the axis of the inflow hole, and the end of the housing opposite to the inflow hole is installed in the mounting groove.

5. The shunt component according to claim 1, characterized in that, The expansion cavity has a frustum-shaped opening at one end, and the diameter of the expansion cavity gradually increases along the flow direction of the inlet hole. The plate is embedded in the opening and is adapted to the shape of the expansion cavity.

6. The shunt component according to claim 5, characterized in that, The axial direction of the diversion hole is set at an angle to the axial direction of the inflow hole, and along the flow direction of the diversion hole, the axial direction of the diversion hole is inclined away from the axis of the inflow hole.

7. The shunt component according to claim 1, characterized in that, The plate body includes a first plate body and a second plate body disposed opposite to each other. The first plate body is disposed in the expansion cavity, and the second plate body is connected to the housing and closes the opening. The first plate body is provided with a plurality of diversion holes, and the second plate body is provided with a plurality of insertion holes. The insertion holes are coaxially arranged with the diversion holes, and the diameter of the insertion holes is larger than the diameter of the diversion holes. The diversion assembly also includes a first connecting pipe. The first end of the first connecting pipe is inserted into the insertion hole and communicates with the diversion hole. The end face of the first end is connected to the plate surface of the second plate body on the side opposite to the expansion cavity.

8. The shunt component according to claim 2, characterized in that, The inlet pipe is closed at one end away from the housing. The inlet pipe wall is provided with a side hole, which communicates with the first pipe cavity. The flow splitting assembly also includes an incoming flow pipe. One end of the incoming flow pipe is connected to the inlet pipe through the side hole, and the other end of the incoming flow pipe is used to allow fluid to flow in. The axial direction of the incoming flow pipe is tangent to the circumferential direction of the inlet pipe.

9. The shunt component according to claim 2, characterized in that, The diversion assembly also includes an inlet pipe, one end of which is connected to the inlet pipe and the other end of which is used to allow fluid to flow in. At least a portion of the inner wall of the inlet pipe has a threaded structure, which is configured to extend helically along the axial direction of the inlet pipe.

10. The shunt assembly according to claim 9, characterized in that, At least a portion of the inlet pipe is U-shaped. The inlet pipe includes a first straight pipe section, a bend section, and a second straight pipe section connected in sequence. The first straight pipe section and the second straight pipe section are arranged parallel to each other. The end of the first straight pipe section opposite to the bend section is connected to the inlet pipe. The threaded structure includes a first threaded section and a second threaded section. The first threaded section is disposed on the inner wall of the first straight pipe section, and the second threaded section is disposed on the inner wall of the second straight pipe section.

11. The shunt assembly according to any one of claims 1 to 10, characterized in that, The diversion assembly further includes a diversion cone, the large-diameter end of which is connected to the plate body, and the small-diameter end of which is disposed in the expansion cavity. The diversion cone is coaxially disposed with the inflow hole and along the axial direction of the inflow hole. The distance between the small-diameter end of the diversion cone and the inflow hole is L1, and the diameter of the inflow hole is D. The ratio of L1 to D ranges from 0 to 5.

12. A method for producing a shunt component, for producing a shunt component according to any one of claims 1 to 11, characterized in that, Includes the following steps: Provide sheet metal parts, wherein the sheet metal parts are flat; The sheet metal part is stamped into an unfolded cylindrical shape, and the stamped sheet metal part is rolled into a cylinder to form the expansion cavity and the inlet pipe cavity. Alternatively, the sheet metal part is rolled into a cylindrical structure, and the rolled sheet metal part is extruded to form the expansion cavity and the inlet pipe cavity.

13. The method for producing a shunt component according to claim 12, characterized in that, The step of extruding the sheet metal part after rolling to form the expansion cavity and the inlet pipe cavity includes any one of the following steps: The two ends of the sheet metal part after the roll are stamped to form the expansion cavity and the cavity of the inlet pipe; The circumference of the sheet metal part after the roll is spun to form the expansion cavity and the cavity of the inlet pipe.

14. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, Includes the shunt component according to any one of claims 1 to 11.

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