Flow dividing assembly and heating and ventilation equipment

Abstract

The invention provides a flow dividing assembly and heating and ventilation equipment, the flow dividing assembly comprises a distributor and a first connecting pipe, the first connecting pipe is provided with an inflow hole and a plurality of flow dividing holes, the inflow hole communicates with the flow dividing holes, one end of the first connecting pipe is connected with the distributor and communicates with the flow dividing holes, and the first connecting pipe comprises an adjusting pipe section and a circulating pipe section; the circulation pipe section is communicated with the adjusting pipe section, and the circulation area of the adjusting pipe section is smaller than that of the circulation pipe section. The flow adjusting function is achieved through the adjusting pipe section of the first connecting pipe, the flow area of the adjusting pipe section can be preset to achieve the flow adjusting function of fluid, the first connecting pipe is fixed through the flow dividing holes in the plate body and communicated with the expansion cavity in the shell, and an original flow dividing hole plate responsible for flow dividing and flow adjusting can be omitted; the structure is more compact, the production cost is reduced, and installation is convenient.

Description

Technical Field

[0001] This invention relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and more particularly to a flow distribution component 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 components require complex flow distribution orifice plates to achieve flow distribution and flow control of each channel. The flow distribution orifice plate has a complex structure and high production cost. It also needs to be used with a cover plate to fix the first connecting pipe, making installation inconvenient. Summary of the Invention

[0004] The objective of this invention is to at least solve the problems of complex structure and high cost of existing HVAC system distribution components. This objective is achieved through the following technical solution:

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

[0006] A distributor having an inlet orifice and a plurality of branch orifices, the inlet orifice being in communication with the branch orifices;

[0007] A first connecting pipe, one end of which is connected to the distributor and communicates with the diversion hole, the first connecting pipe includes an adjusting pipe section and a flow pipe section, the flow pipe section is communicated with the adjusting pipe section, and the flow area of ​​the adjusting pipe section is smaller than the flow area of ​​the flow pipe section.

[0008] The flow-dividing assembly proposed in the first aspect of the present invention realizes the flow regulation function through the regulating pipe section of the first connecting pipe. The flow area of ​​the regulating pipe section can be preset to undertake the function of fluid flow regulation. The first connecting pipe is fixed through the flow-dividing hole on the distributor and communicates with the distributor. The original flow-dividing orifice plate responsible for flow diversion and flow regulation can be eliminated, making the structure more compact, reducing production costs and facilitating installation.

[0009] In addition, the shunt assembly according to the present invention may also have the following additional technical features:

[0010] In some embodiments of the present invention, one end of the first connecting pipe connected to the distributor is inserted into the diversion hole.

[0011] In some embodiments of the present invention, the outer diameter of the regulating pipe section is smaller than the outer diameter of the flow pipe section, and the inner diameter of the regulating pipe section is smaller than the inner diameter of the flow pipe section.

[0012] In some embodiments of the present invention, at least a portion of the regulating pipe section is inserted into the diversion hole, and the flow pipe section is located downstream of the regulating pipe section along the flow direction of the first connecting pipe.

[0013] In some embodiments of the present invention, the flow pipe section includes a first pipe section and a second pipe section, at least a portion of the first pipe section is inserted into the diversion hole along the flow direction of the first connecting pipe, the second pipe section is located downstream of the first pipe section, and the second pipe section is connected to the first pipe section through the regulating pipe section.

[0014] In some embodiments of the present invention, the ratio of the axial length of the regulating pipe section to the inner diameter of the regulating pipe section is greater than 0.5.

[0015] In some embodiments of the present invention, the regulating pipe section includes a regulating pipe body and an regulating member, the regulating member being installed in the regulating pipe body, the regulating member having at least one regulating hole, the regulating hole being in communication with the flow pipe section.

[0016] In some embodiments of the present invention, the dispenser includes a plate and a housing, the housing defining an expansion cavity with an opening, the plate being connected to the housing and closing the opening, the plate having a plurality of diversion holes, the expansion cavity having a rotating body structure, and the opening and the inflow hole being respectively located at both ends of the expansion cavity along its axial direction.

[0017] 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.

[0018] 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 inflow hole, the axial direction of the diversion hole is inclined in a direction away from the axis of the inflow hole.

[0019] 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.

[0020] In some embodiments of the present invention, the axial length of the diversion hole is greater than 1.5 mm;

[0021] Alternatively, the diversion assembly may further include a flanged structure disposed on the side of the plate facing the first connecting pipe, and the flanged structure is disposed around the first connecting pipe, with the first connecting pipe connected to the flanged structure.

[0022] In some embodiments of the present invention, the flow splitting assembly further includes a flow splitting cone, the small-diameter end of which is disposed in the expansion cavity. The flow splitting cone is coaxially disposed with the inlet hole and along the axial direction of the inlet hole. The distance between the small-diameter end of the flow splitting cone and the inlet hole is L1, and the diameter of the inlet hole is D. The ratio of L1 to D ranges from 0 to 5.

[0023] A second 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.

[0024] The HVAC equipment proposed in the second aspect of the present invention realizes the flow regulation function through the regulating pipe section of the first connecting pipe. The flow area of ​​the regulating pipe section can be preset to undertake the function of fluid flow regulation. The first connecting pipe is fixed through the diversion hole on the plate and communicates with the expansion cavity inside the shell. 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. Attached Figure Description

[0025] 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:

[0026] Figure 1 A schematic diagram of the assembly structure of the first connecting pipe and the plate (with mounting groove) according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic cross-sectional view of the first connecting pipe and plate (with mounting groove) according to an embodiment of the present invention is shown.

[0028] Figure 3 A schematic diagram of the assembly structure of the plate and the shell according to an embodiment of the present invention is shown.

[0029] Figure 4 A schematic cross-sectional view of the plate and shell according to an embodiment of the present invention is shown.

[0030] Figure 5 A schematic diagram of the assembly structure of the plate and the housing (with mounting groove) according to an embodiment of the present invention is shown.

[0031] Figure 6 A schematic cross-sectional view of the plate and housing (with mounting groove) according to an embodiment of the present invention is shown.

[0032] Figure 7 A schematic diagram of the assembly structure of the plate and the shell (with flange structure) according to an embodiment of the present invention is shown.

[0033] Figure 8 A schematic cross-sectional view of the plate and shell (with flange structure) according to an embodiment of the present invention is shown.

[0034] Figure 9 A schematic diagram of the structure of the first connecting pipe (with a reduced diameter at one end) according to an embodiment of the present invention is shown.

[0035] Figure 10 A schematic cross-sectional view of the first connecting pipe (with a reduced diameter at one end) according to an embodiment of the present invention is shown.

[0036] Figure 11 A schematic diagram of the structure of the first connecting pipe (reduced diameter along the friction position) according to an embodiment of the present invention is shown.

[0037] Figure 12 A schematic cross-sectional view of the first connecting pipe (reduced diameter along the friction position) according to an embodiment of the present invention is shown.

[0038] Figure 13 A schematic cross-sectional view of the first connecting pipe (with adjusting member) according to an embodiment of the present invention is shown.

[0039] Figure 14 A schematic diagram of the assembly structure of the first connecting pipe and the plate (the plate has an inclination angle) according to an embodiment of the present invention is shown.

[0040] Figure 15 A schematic diagram of the structure of the first connecting pipe and the plate (the plate has an inclination angle) according to an embodiment of the present invention is shown.

[0041] Figure 16 A schematic cross-sectional view of the shell and plate (the plate has an angle) according to an embodiment of the present invention is shown.

[0042] Figure 17 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.

[0043] The attached figures are labeled as follows:

[0044] 1. Heating, ventilation, and air conditioning (HVAC) equipment;

[0045] 1000, Flow divider assembly; 2000, First heat exchanger; 3000, Second heat exchanger; 4000, Compressor; 5000, Refrigeration throttle valve; 6000, Four-way valve;

[0046] 10. Shell; 111. Inlet port; 103. Expansion cavity;

[0047] 20. Plate body; 201. Diversion hole; 24. Flanged structure; 25. Mounting groove;

[0048] 30. Flow divider cone;

[0049] 200. First connecting pipe;

[0050] 230. Regulating pipe section; 2301. Regulating pipe body; 2302. Regulating component; 2303. Regulating hole;

[0051] 240, Flow pipe section; 2401, First pipe section; 2402, Second pipe section;

[0052] 300. Second connecting pipe. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] like Figures 1 to 17 As shown, a first aspect of the present invention provides a diversion assembly 1000, including a housing 10, a plate 20, and a first connecting pipe 200. 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. The plate 20 is mounted on the housing 10 and closes the opening. The plate 20 has a plurality of diversion holes 201 communicating with the expansion cavity 103. One end of the first connecting pipe 200 is connected to the plate 20 and communicates with the diversion holes 201. The first connecting pipe 200 includes an adjusting pipe section 230 and a flow pipe section 240 communicating with the adjusting pipe section 230. The flow area of ​​the adjusting pipe section 230 is smaller than the flow area of ​​the flow pipe section 240.

[0058] It is understood that the shell 10 can be a basin-shaped structure, formed by stamping a rigid metal component, such as a stainless steel sheet. An expansion cavity 103 with an open end is formed inside the shell 10. The expansion cavity 103 has a certain volume and radial cross-section to buffer and fully mix the incoming fluid, thereby improving the uniformity of the gas-liquid two-phase flow before diversion. The expansion cavity 103 can be frustum-shaped, truncated cone-shaped, or hemispherical, so that the flow area of ​​the expansion cavity 103 gradually increases along the flow direction of the fluid. The inlet hole 111 is located at the small-diameter end of the expansion cavity 103, so that the fluid velocity decreases after entering the expansion cavity 103 through the inlet hole 111, further buffering and mixing it, and then flowing axially along the expansion cavity 103 to the first connecting pipe 200 for diversion. Furthermore, auxiliary diversion structures, such as a diversion cone 30 or other flow guiding and diversion structures, can be provided inside the expansion cavity 103 to achieve higher flow efficiency and better diversion effect. The plate 20 is installed at the opening and closes the opening. The shape of the plate 20 can be adapted to the opening; for example, the plate 20 can be circular or a regular polygon. The plate 20 can be directly welded to the edge of the opening of the shell 10, or the plate 20 can be interference-fitted into the expansion cavity 103, or the plate 20 can be fixedly connected to the shell 10 by fasteners such as snap bolts. Multiple diversion holes 201 can be provided on the plate 20. The multiple diversion holes 201 can be arranged in a circumferential array or in a ring-shaped interval to facilitate the placement of a diversion cone 30 at the center. The diversion holes 201 can be circular, regular polygonal, or other shapes. The first connecting pipe 200 is used to connect the expansion cavity 103 to 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. Specifically, 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 is 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 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.

[0059] The flow-diverting assembly 1000 proposed in the first aspect of the present invention realizes the flow regulation function 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 flow-diverting hole 201 on the plate 20 and communicates with the expansion cavity 103 inside the housing 10. The original flow-diverting hole 201 plate responsible for flow diversion and flow regulation can be eliminated, making the structure more compact, reducing production costs and facilitating installation.

[0060] In some embodiments of the present invention, one end of the first connecting pipe 200 connected to the plate 20 is inserted into the diversion hole 201.

[0061] Understandably, 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 can also be 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 come out of the diversion hole 201. Additionally, the portion between the regulating pipe section 230 and the flow pipe section 240 can abut against the plate surface of the plate body 20 on the side opposite to the expansion cavity 103, and the two can be welded together to further improve the reliability of the connection between the first connecting pipe 200 and the housing 10.

[0062] In some embodiments of the present invention, the outer diameter of the regulating pipe section 230 is smaller than the outer diameter of the flow pipe section 240, and the inner diameter of the regulating pipe section 230 is smaller than the inner diameter of the flow pipe section 240.

[0063] It is understandable that the regulating pipe section 230 and the flow pipe section 240 can be manufactured from a single pipe through machining processes. The regulating pipe section 230 and the flow pipe section 240 are an integral structure, resulting in better strength and reduced leakage risk. The regulating pipe section 230 can be a portion of the first connecting pipe 200 machined into a reduced-diameter structure to adjust the flow area of ​​the first connecting pipe 200, thereby achieving the function of flow distribution for the diverted fluid. Specifically, the outer diameter of the regulating pipe section 230 is smaller than the outer diameter of the flow pipe section 240, and the inner diameter of the regulating pipe section 230 is smaller than the inner diameter of the flow pipe section 240; that is, the wall thickness of the regulating pipe section 230 can be the same as the wall thickness of the flow pipe section 240.

[0064] In some embodiments of the present invention, at least a portion of the regulating pipe section 230 is inserted into the diversion hole 201 and connected to the plate body 20, and the flow pipe section 240 is located downstream of the regulating pipe section 230 along the flow direction of the first connecting pipe 200.

[0065] It is understood that the regulating pipe section 230 is located at one end of the first connecting pipe 200. The regulating pipe section 230 can be partially or completely inserted into the diversion hole 201, and the end of the regulating pipe section 230 facing away from the flow pipe section 240 is located in the diversion hole 201 to reduce the impact on the fluid flow in the expansion chamber 103. The regulating pipe section 230 can be interference-fitted into the diversion hole 201 to fix the regulating pipe section 230 to the diversion hole 201. Alternatively, the regulating pipe section 230 can be inserted into the diversion hole 201 and then connected and fixed to the housing 10 by welding. Specifically, the flow divider 201 can be set to the diameter corresponding to the required flow rate, and the diameter of the regulating pipe section 230 can be adjusted to match the diameter of the flow divider 201. The regulating pipe section 230 can be inserted and fixedly connected to the flow divider 201, thereby replacing the flow distribution function of the flow divider 201 plate with the reduced diameter structure of the regulating pipe section 230, making the structure more compact and improving production and installation efficiency.

[0066] In some embodiments of the present invention, the flow pipe section 240 includes a first pipe section 2401 and a second pipe section 2402. At least a portion of the first pipe section 2401 is inserted into the diversion hole 201 and connected to the plate body 20. Along the flow direction of the first connecting pipe 200, the second pipe section 2402 is located downstream of the first pipe section 2401, and the second pipe section 2402 is connected to the first pipe section 2401 through the regulating pipe section 230.

[0067] It is understood that, along the flow direction of the fluid, the first pipe section 2401, the regulating pipe section 230, and the second pipe section 2402 flow sequentially. The entire first pipe section 2401 is inserted into the diversion hole 201, or partially inserted into the diversion hole 201. The first pipe section 2401 can be interference-fitted into the diversion hole 201 to achieve fixation between the first pipe section 2401 and the diversion hole 201. Alternatively, the first pipe section 2401 can be inserted into the diversion hole 201, and then the first pipe section 2401 can be connected and fixed to the housing 10 by welding. Specifically, the diameter of the diversion hole 201 can be adapted to the diameter of the first pipe section 2401, and the first pipe section 2401 can be inserted and fixedly connected to the diversion hole 201. The regulating pipe section 230 is set between the first pipe section 2401 and the second pipe section 2402, so that the regulating pipe section 230 can be formed by machining a reduced diameter structure in the middle of a pipe. At this time, the regulating pipe section 230, which has a different flow area than the flow pipe section 240, can change the flow area of ​​the first connecting pipe 200, replace the flow distribution function of the diversion hole 201 plate, and make the structure more compact and improve production and installation efficiency.

[0068] In some embodiments of the present invention, the ratio of the axial length of the regulating pipe section 230 to the inner diameter of the regulating pipe section 230 is greater than 0.5.

[0069] It is understandable that optimizing the ratio of the axial length to the inner diameter of the regulating pipe section 230 will make the axial length of the regulating pipe section 230 moderate, so as to avoid the regulating pipe section 230 from having an adverse effect on the flow resistance, and make the inner diameter of the regulating pipe section 230 moderate, so as to avoid the regulating pipe section 230 being too small and having an adverse effect on the flow efficiency.

[0070] In some embodiments of the present invention, the regulating pipe section 230 includes a regulating pipe body 2301 and an regulating member 2302. The regulating member 2302 is installed in the regulating pipe body 2301 and has at least one regulating hole 2303, which communicates with the flow pipe section 240.

[0071] It is understood that the regulating pipe body 2301 can be the same pipe as the flow pipe section 240, meaning the regulating pipe body 2301 can have the same wall thickness and inner diameter as the flow pipe section 240. A regulating element 2302 can be installed in the regulating pipe body 2301, and flow rate regulation is achieved through the regulating hole 2303 on the regulating element 2302. The regulating element 2302 can be a mesh structure to also function as a filter, or it can be a cylindrical shape adapted to the regulating pipe body 2301, and it has at least one regulating hole 2303. The axial direction of the regulating hole 2303 is parallel to the axial direction of the regulating element 2302, allowing the fluid to flow through the regulating hole 2303 to regulate its flow rate and reach the downstream flow pipe section 240. Specifically, for the regulating hole 2303, the ratio of the axial length of the regulating hole 2303 to the diameter of the regulating hole 2303 can be optimized to make the axial length of the regulating hole 2303 moderate, so as to avoid the regulating hole 2303 from having an adverse effect on the flow resistance, and to make the inner diameter of the regulating hole 2303 moderate, so as to avoid the regulating hole 2303 being too small and having an adverse effect on the flow efficiency.

[0072] In some embodiments of the present invention, the axial length of the diversion hole 201 is greater than 1.5 mm;

[0073] Alternatively, the diversion assembly 1000 may also include a flange structure, which is disposed on the side of the plate 20 facing the first connecting pipe 200 and surrounds the first connecting pipe 200, with the first connecting pipe 200 connected to the flange structure.

[0074] Understandably, to ensure the reliability of the connection between the first connecting pipe 200 and the diversion hole 201, the axial length of the diversion hole 201 needs to be set to a certain length, preferably greater than 1.5 mm, so that the depth of the diversion hole 201 is sufficient to reliably insert the first connecting pipe 200, and the thickness of the plate 20 is not too large, which would result in higher costs and greater production difficulties. Alternatively, without increasing the thickness of the plate 20, a flange structure can be set to increase the contact area between the first connecting pipe 200 and the diversion hole 201. The flange structure is set on the side of the plate 20 facing away from the expansion cavity 103 and located at the opening of the diversion hole 201. The flange structure can be arranged in a ring shape, and the plate 20 at the opening of the diversion hole 201 can be bent to form the flange structure through sheet metal bending process, or the flange structure can be made separately and connected and fixed to the plate 20 by welding. The flange structure can be arranged in a ring around the axial direction of the diversion hole 201, or the flange structure can include multiple parts and be arranged at intervals along the circumference of the diversion hole 201. This can also increase the connection area of ​​the first connecting pipe 200, thereby improving the reliability of the connection between the first connecting pipe 200 and the plate 20.

[0075] In some embodiments of the present invention, the expansion cavity 103 has an open end that is frustum-shaped, 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 body 20 is embedded in the open end and is adapted to the shape of the expansion cavity 103.

[0076] 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.

[0077] 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.

[0078] 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°.

[0079] 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 13, the mounting groove 13 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 13.

[0080] It is understood that a mounting groove 13 can be provided around the edge of the plate 20 facing the expansion cavity 103. The mounting groove 13 can be arranged in a ring and extend around the axis of the plate 20, or the mounting groove 13 includes multiple parts and is spaced apart along the circumference of the plate 20. The shape of the mounting groove 13 matches the opening of the housing 10. The mounting groove 13 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 13, which further improves the reliability of the connection between the plate 20 and the housing 10.

[0081] In some embodiments of the present invention, the diversion assembly 1000 further includes a diversion cone 30, 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 L1, the diameter of the inflow hole 111 is D, and the ratio of D to L1 ranges from 0 to 5.

[0082] 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 0 to 5, 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, thereby allowing 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.

[0083] In some embodiments of the present invention, the flow divider cone 30 and the plate 20 are integral structures.

[0084] 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.

[0085] In some embodiments of the present invention, the flow divider cone 30 may be a pyramidal structure.

[0086] 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.

[0087] Alternatively, the flow divider cone 30 may have a star-shaped cone structure with multiple flow guides arranged along its circumference.

[0088] 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.

[0089] A second aspect of the present invention provides a heating, ventilation, and air conditioning (HVAC) device 1, 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.

[0090] The HVAC equipment 1 proposed in the second aspect of the present invention realizes the flow regulation function 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 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.

[0091] It is understandable that, such as Figure 17 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. The flow divider assembly 1000 can be used to divide the refrigerant in the outdoor unit of the air conditioner before it enters the multiple heat exchange tubes of the first heat exchanger 2000. The axial direction of the inlet pipe 302 of the flow divider assembly 1000 is tangent to the circumferential direction of the inlet pipe 301, so that the refrigerant in the inlet 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 making the gas-liquid two-phase refrigerant fully mixed, thereby improving the uniformity of refrigerant distribution at the inlet of the flow divider assembly 1000.

[0092] 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: A distributor having an inlet orifice and a plurality of branch orifices, the inlet orifice being in communication with the branch orifices; A first connecting pipe, one end of which is connected to the distributor and communicates with the diversion hole, the first connecting pipe includes an adjusting pipe section and a flow pipe section, the flow pipe section is communicated with the adjusting pipe section, and the flow area of ​​the adjusting pipe section is smaller than the flow area of ​​the flow pipe section.

2. The shunt component according to claim 1, characterized in that, One end of the first connecting pipe, which is connected to the distributor, is inserted into the diversion hole.

3. The shunt component according to claim 2, characterized in that, The outer diameter of the regulating pipe section is smaller than the outer diameter of the flow pipe section, and the inner diameter of the regulating pipe section is smaller than the inner diameter of the flow pipe section.

4. The shunt component according to claim 3, characterized in that, At least a portion of the regulating pipe section is inserted into the diversion hole, and the flow pipe section is located downstream of the regulating pipe section along the flow direction of the first connecting pipe.

5. The shunt component according to claim 3, characterized in that, The flow pipe section includes a first pipe section and a second pipe section. At least a portion of the first pipe section is inserted into the diversion hole along the flow direction of the first connecting pipe. The second pipe section is located downstream of the first pipe section and is connected to the first pipe section through the regulating pipe section.

6. The shunt component according to claim 1, characterized in that, The ratio of the axial length of the regulating pipe section to the inner diameter of the regulating pipe section is greater than 0.

5.

7. The shunt component according to claim 1, characterized in that, The regulating pipe section includes a regulating pipe body and an regulating component. The regulating component is installed in the regulating pipe body and has at least one regulating hole, which communicates with the flow pipe section.

8. The shunt assembly according to any one of claims 1 to 7, characterized in that, The distributor includes a plate and a housing. The housing defines an expansion cavity with an opening. The plate is connected to the housing and closes the opening. The plate has a plurality of diversion holes. The expansion cavity has a rotating structure. The opening and the inflow hole are respectively located at both ends of the axial direction of the expansion cavity.

9. The shunt component according to claim 8, 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.

10. The shunt assembly according to claim 9, 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 inflow hole, the axial direction of the diversion hole is inclined away from the axis of the inflow hole.

11. The shunt assembly according to claim 8, 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.

12. The shunt assembly according to claim 8, characterized in that, The axial length of the diversion hole is greater than 1.5 mm; Alternatively, the diversion assembly may further include a flanged structure disposed on the side of the plate facing the first connecting pipe, and the flanged structure is disposed around the first connecting pipe, with the first connecting pipe connected to the flanged structure.

13. The shunt assembly according to claim 8, characterized in that, The flow splitting assembly further includes a flow splitting cone, the small-diameter end of which is disposed in the expansion cavity. The flow splitting cone is coaxially disposed with the inlet hole and along the axial direction of the inlet hole. The distance between the small-diameter end of the flow splitting cone and the inlet hole is L1, and the diameter of the inlet hole is D. The ratio of L1 to D ranges from 0 to 5.

14. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, Includes the shunt component according to any one of claims 1 to 13.

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