Splitting assembly and heating and ventilation device

Abstract

The utility model is specifically related to a shunt subassembly and heating and ventilation equipment, the shunt subassembly includes casing and inlet pipe, wherein, the casing has opposite first end and second end, the casing includes inflow hole and expansion chamber, the inflow hole is set up in the first end and is linked with the expansion chamber, the inside diameter of expansion chamber gradually increases from the first end to the second end direction. The inlet pipe has the probe -in section who passes through the inflow hole and is contained in the expansion chamber, the probe -in section has the limiting surface who is in line with the inner wall of expansion chamber, the limiting surface is ringed and is established on the outer surface of probe -in section around the axis of inflow hole. According to the shunt subassembly of the utility model, it is helpful to improve the straightness of casing and inlet pipe, to ensure the centring of inlet pipe and shunt, to improve the solder accumulation length and to ensure the reliability, to help to avoid the risk of inlet deflection caused by assembly inclination, to solve the problem that the existing distributor is prone to performance attenuation.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, specifically to a diversion component and HVAC equipment. Background Technology

[0002] For HVAC equipment, there are generally two modes: cooling mode and heating mode. In this case, cooling mode and heating mode refer to the indoor heat exchanger. When the indoor heat exchanger is in cooling mode or heating mode, the outdoor heat exchanger is in heating mode or cooling mode respectively.

[0003] In cooling mode, the compressor compresses the low-temperature, low-pressure refrigerant to a high-temperature, high-pressure state. After flowing into the outdoor heat exchanger, it condenses into a high-pressure, medium-temperature liquid refrigerant. This liquid refrigerant then passes through a throttling device to become a low-temperature, low-pressure two-phase refrigerant. Before entering the indoor heat exchanger, the two-phase refrigerant flows through a distributor. The distributor allocates the two-phase refrigerant according to the refrigerant demand in different flow paths before it enters the indoor heat exchanger for heat exchange, achieving the cooling effect. In this mode, the outdoor heat exchanger acts as the condenser, and the indoor heat exchanger acts as the evaporator. The low-temperature, low-pressure refrigerant after heat exchange eventually enters the compressor's return gas end for subsequent circulation. In heating mode, the compressed refrigerant first enters the indoor heat exchanger for condensation. In this mode, the indoor heat exchanger acts as the condenser, and the outdoor heat exchanger acts as the evaporator. The distributor distributes the liquid or gaseous refrigerant flowing from the condenser to the evaporator.

[0004] Currently, the inlet structure of distributors significantly affects the uniformity of refrigerant distribution, requiring the inlet pipe to be aligned with the distribution cone. However, existing distributors only use a flange to overlap the inlet pipe and the cylinder. Insufficient overlap distance easily leads to poor welding or leakage risks, and misalignment of the clearance between the two can cause assembly tilting, resulting in inlet flow deviation and potentially causing performance degradation of the heat exchanger. Utility Model Content

[0005] The purpose of this invention is to at least solve the problem of performance degradation that easily occurs in existing distributors. This purpose is achieved through the following technical solution:

[0006] The first aspect of this utility model provides a shunt assembly, comprising:

[0007] A housing having a first end and a second end disposed opposite to each other, the housing including an inlet hole and an expansion cavity, the inlet hole being opened at the first end and communicating with the expansion cavity, the inner diameter of the expansion cavity gradually increasing from the first end to the second end;

[0008] An inlet pipe having an insertion section passing through the inflow hole and housed within the expansion cavity, the insertion section having a limiting surface that conforms to the inner wall of the expansion cavity, the limiting surface being circumferentially disposed on the outer surface of the insertion section around the axis of the inflow hole.

[0009] The flow divider assembly of this utility model includes a housing and an inlet pipe. The inlet pipe has an insertion section housed in the expansion cavity of the housing, and the insertion section has a limiting surface that fits against the inner wall of the expansion cavity. By circumferentially positioning the limiting surface around the axis of the inlet hole on the outer surface of the insertion section, it helps to improve the straightness of the housing and the inlet pipe, thereby ensuring the alignment of the inlet pipe and the flow divider and guaranteeing the uniformity of the inlet flow. On the other hand, it helps to increase the contact area between the inlet pipe and the housing, increase the solder buildup length to ensure reliability, and further improve the sealing performance of the connection between the inlet pipe and the housing. This helps to ensure a longer overlap distance between the inlet pipe and the housing, thereby avoiding the risk of inlet flow deviation caused by assembly tilt and helping to solve the problem of performance degradation that is common in existing distributors.

[0010] In addition, the current shunt assembly according to this utility model may also have the following additional technical features:

[0011] In some embodiments of this utility model, the inner diameter of the probe gradually increases from the inlet hole to the opening, and the outer surface of the probe is fitted and connected to the inner wall to form the limiting surface.

[0012] In some embodiments of this utility model, from the first end to the second end, the probe section includes a first part and a second part connected in sequence, the outer surface of the first part is attached to the inner wall to form the limiting surface, and the second part extends in a direction away from the limiting surface.

[0013] In some embodiments of this utility model, the second part is configured as a tube;

[0014] Alternatively, the second part may be configured as a plurality of parts, and the plurality of the second parts may be arranged in a ring around the axis of the inflow hole.

[0015] In some embodiments of this utility model, along the circumference of the inlet pipe, the probe section includes a plurality of positioning parts, the plurality of positioning parts are arranged in a ring around the axis of the inflow hole, and each of the plurality of positioning parts has a working surface that fits and connects with the inner wall, and the working surfaces of the plurality of positioning parts together form the limiting surface.

[0016] In some embodiments of this utility model, the housing is provided with an insertion part, the insertion part defines the inflow hole, and the insertion part is adapted to be connected to the inlet pipe.

[0017] In some embodiments of this utility model, the insertion part has a first length L along the axial direction of the inflow hole, wherein L≥2mm.

[0018] In some embodiments of this utility model, from the first end to the second end, the expansion cavity has a first section and a second section connected in sequence. The first section is a first arc-shaped surface, and the second section is a second arc-shaped surface. The first arc-shaped surface is a convex arc surface, and the second arc-shaped surface is a concave arc surface. The radius of curvature of the first arc-shaped surface is smaller than the radius of curvature of the second arc-shaped surface. The probe section is fitted and connected to the first section to form the limiting surface.

[0019] In some embodiments of this utility model, the second end of the housing is provided with an opening communicating with the expansion cavity; the diversion assembly further includes a diversion plate, which is disposed at the second end and blocks the opening, and the diversion plate has a plurality of diversion holes.

[0020] In some embodiments of this utility model, the diversion assembly further includes a first connecting pipe, and there are multiple first connecting pipes. The multiple first connecting pipes are respectively connected to the diversion plate, and each diversion hole is connected to a corresponding first connecting pipe.

[0021] And / or, the diversion assembly further includes a diversion cone disposed on the diversion plate, wherein the axis of the diversion cone is collinear with the axis of the inlet orifice.

[0022] A second aspect of this utility model also provides a heating, ventilation, and air conditioning (HVAC) device, comprising:

[0023] First heat exchanger;

[0024] Second heat exchanger;

[0025] As described in this utility model, the expansion cavity is connected to the first heat exchanger, and the inlet pipe is connected to the second heat exchanger.

[0026] Compared with the prior art, the HVAC equipment proposed in this utility model has the technical advantages of the above-mentioned diversion components, which will not be elaborated here. Attached Figure Description

[0027] 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 scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1A schematic diagram of the structure of a heating, ventilation, and air conditioning (HVAC) device according to an embodiment of the present invention is shown.

[0029] Figure 2 for Figure 1 The diagram shows the structure of the shunt component.

[0030] Figure 3 for Figure 2 A partial structural cross-sectional view of the splitter assembly shown (including the distributor and the first connecting pipe);

[0031] Figure 4 for Figure 2 The diagram shows the structure of the shell and inlet pipe.

[0032] Figure 5 for Figure 4 A schematic cross-sectional view of the casing and inlet pipe shown;

[0033] Figure 6 for Figure 2 A schematic diagram showing the assembly of the housing and inlet pipe;

[0034] Figure 7 for Figure 2 Another structural diagram of the shunt component shown;

[0035] Figure 8 for Figure 2 The diagram shows a third structure of the shunt component.

[0036] The markings in the attached diagram are as follows:

[0037] 1000. Heating, ventilation, and air conditioning equipment;

[0038] 100. Flow divider assembly; 200. First heat exchanger; 300. Second heat exchanger; 400. Compressor; 500. Refrigeration throttle valve; 600. Four-way valve;

[0039] 10. Distributor; 20. First connecting pipe; 30. Second connecting pipe;

[0040] 1. Shell; 11. Expansion cavity; 111. First section; 112. Second section; 12. Opening; 13. Inlet;

[0041] 101. Insertion section;

[0042] 2. Inlet pipe; 21. Insertion section; 211. First part; 212. Second part; 213. Positioning part; 22. Fixing section; 23. Connecting section;

[0043] 3. Diverter plate; 31. Diverter orifice;

[0044] 4. Flow divider cone;

[0045] 5. Cover plate; 51. Fixing holes;

[0046] 6. First pressure seat; 61. Extrusion section;

[0047] 7. Second pressure seat; 71. Extrusion chamber; 72. Receiving groove; 73. Receiving hole. Detailed Implementation

[0048] 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.

[0049] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0050] 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.

[0051] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0052] like Figure 1 and Figure 2 As shown, this utility model proposes a flow-diverting component 100 for use in a heating, ventilation, and air conditioning (HVAC) system 1000. Specifically, the HVAC system 1000 may include a compressor 400, a valve structure, a first heat exchanger 200, and a second heat exchanger 300 connected in series. The compressor 400 is used to compress refrigerant. The refrigerant compressed by the compressor 400 flows sequentially through the second heat exchanger 300 and the first heat exchanger 200, and finally flows back to the compressor 400. The valve structure includes a four-way valve 600. The four-way valve 600 has four ports, two of which are connected to the output and input ends of the compressor 400, respectively, and the other two ports are connected to the input end of the second heat exchanger 300 and the output end of the first heat exchanger 200, respectively.

[0053] The first heat exchanger 200 and the second heat exchanger 300 enable the HVAC equipment 1000 to switch between evaporator and condenser functions, i.e., heating mode and cooling mode. In this configuration, one of the first heat exchanger 200 and the second heat exchanger 300 is located outside the target space as an outdoor unit, while the other is installed inside the target space as an indoor unit. The outdoor and indoor units work together to form a circulation path, enabling the HVAC equipment 1000 to cool, heat, dehumidify, and purify the air in the target space, thereby achieving a comfortable environment. The HVAC equipment 1000 can have one outdoor unit and multiple indoor units; this embodiment does not specifically limit this.

[0054] In this embodiment, the HVAC equipment 1000 is an air conditioner (in other embodiments of this utility model, the HVAC equipment 1000 includes, but is not limited to, multi-split systems, heat pumps, water heaters, swimming pool machines, etc.), the first heat exchanger 200 is an evaporator, and the second heat exchanger 300 is a refrigerant. The first heat exchanger 200 and the second heat exchanger 300 are connected by a flow distribution assembly 100 to achieve the distribution of refrigerant from the main gas / liquid collection pipe to multiple heat exchanger blocks. At this time, the valve structure also includes a refrigerant throttling valve 500, which is connected and disposed between the flow distribution assembly 100 and the second heat exchanger 300.

[0055] like Figure 1 and Figure 2 As shown, the diversion assembly 100 includes a distributor 10, a plurality of first connecting pipes 20, and a second connecting pipe 30. The distributor 10 has an inlet hole 13 and a plurality of diversion holes 31, which communicate with the inlet hole 13. The second connecting pipes 30 are connected to the distributor 10 and communicate with the inlet hole 13. The plurality of first connecting pipes 20 are connected to the distributor 10, and each first connecting pipe 20 communicates with one diversion hole 31.

[0056] In terms of overall design, such as Figures 3-8 As shown, the distributor 10 includes a housing 1 and an inlet pipe 2. The housing 1 has a first end and a second end arranged opposite to each other. The housing 1 includes an inlet hole 13 and an expansion cavity 11. The inlet hole 13 is opened at the first end and communicates with the expansion cavity 11. The inner diameter of the expansion cavity gradually increases from the first end to the second end. The inlet pipe 2 has a probe section 21 that passes through the inlet hole 13 and is accommodated in the expansion cavity 11. The probe section 21 has a limiting surface that fits against the inner wall of the expansion cavity 11. The limiting surface is circumferentially disposed on the outer surface of the probe section around the axis of the inlet hole 13.

[0057] Specifically, by having the inlet pipe 2 have an insertion section 21 that is accommodated in the expansion cavity 11 of the housing 1, and the insertion section 21 has a limiting surface that fits against the inner wall of the expansion cavity 11, and the limiting surface is arranged around the axis of the inlet hole 13 on the outer surface of the insertion section 21, on the one hand, it helps to improve the straightness of the housing 1 and the inlet pipe 2, thereby ensuring the alignment of the inlet pipe 2 and the distributor and ensuring the uniformity of the inlet flow; on the other hand, it helps to increase the contact area between the inlet pipe 2 and the housing 1, increase the solder buildup length to ensure reliability, and further improve the sealing of the connection between the inlet pipe 2 and the housing 1, thereby helping to ensure a longer overlap distance between the inlet pipe 2 and the housing 1, thus avoiding the risk of inlet flow deviation caused by assembly tilt, and helping to solve the problem of performance degradation that is common in existing distributors 10.

[0058] It is necessary to understand that, such as Figures 3 to 8As shown, the housing 1 has a first end and a second end arranged in opposite directions. At this time, one end of the expansion cavity 11 is provided with an inlet hole 13 for refrigerant to flow in, and the other end of the expansion cavity 11 is provided with an opening 12 for refrigerant to flow out. The direction from the first end to the second end is the same as the direction from the inlet hole 13 to the opening 12. The inner diameter of the expansion cavity 11 gradually increases, and the inlet pipe 2 includes a connecting section 23, a fixing section 22, and a probing section 21 arranged sequentially. The connecting section 23 is used to connect with the second connecting pipe 30, the fixing section 22 is housed inside the inlet hole 13 and adapted to the inlet hole 13, and the probing section 21 is located inside the expansion cavity 11. In this embodiment, the inlet pipe 2 has a circular tubular structure, and at least a portion of the outer circumferential surface of the probing section 21 is fitted and connected to the inner wall of the expansion cavity 11 to form a limiting surface. The limiting surface is circumferentially arranged around the axis of the inlet hole 13 on the outer surface of the probing section 21.

[0059] It is understandable that the limiting surface can be a ring structure, or multiple limiting surfaces can be set, and the multiple limiting surfaces are arranged in a ring around the axis of the inlet hole 13, such as in a petal shape. Such a setting helps to improve the straightness of the housing 1 and the inlet pipe 2, and expand the contact area between the inlet pipe 2 and the housing 1, thereby ensuring the alignment of the inlet pipe 2 and the distributor, ensuring the uniformity of the refrigerant flow, avoiding the risk of inlet flow deviation caused by assembly tilt, and thus solving the problem that the existing distributor 10 is prone to performance degradation.

[0060] What needs further understanding is, such as Figures 3-6 As shown, from the first end to the second end, the inner diameter of the probe section 21 gradually increases, and the outer surface of the probe section 21 is fitted and connected to the inner wall to form a limiting surface. In this embodiment, the probe section 21 has a trumpet-shaped structure, that is, from the first end to the second end, the inner diameter of the probe section 21 gradually increases. At the same time, since the inner diameter of the expansion cavity 11 gradually increases from the first end to the second end, optionally, the entire outer peripheral surface of the probe section 21 is fitted and connected to the inner wall of the expansion cavity 11. At this time, the setting of the probe section 21 realizes the expansion connection between the inlet pipe 2 and the housing 1, which not only helps to improve the welding position between the inlet pipe 2 and the housing 1, but also increases the solder accumulation area during welding to improve reliability, and also helps to improve the straightness of the inlet pipe 2, thereby ensuring the alignment of the inlet pipe 2 with the inflow hole 13, as well as the alignment of the inlet pipe 2 with the diverter described below.

[0061] It should be noted that in this embodiment, the insertion section 21 is formed by the cooperation of a compression tool, specifically, as shown in the figure. Figure 6As shown, the extrusion fixture includes a first pressure seat 6 and a second pressure seat 7. The second pressure seat 7 has an extrusion cavity 71 adapted to the outer peripheral surface of the housing 1. A receiving groove 72 and a receiving hole 73 are sequentially provided at the bottom of the extrusion cavity 71. The receiving groove 72 is used to accommodate the insertion part 101 described below, and the receiving hole 73 is used to accommodate the inlet pipe 2, allowing the inlet pipe 2 to penetrate into the interior of the expansion cavity 11. Meanwhile, the first pressure seat 6 is provided with an extrusion part 61 adapted to the expansion cavity 11, and the bottom of the extrusion part 61 is provided with an insertion post for insertion into the inlet pipe 2. At the connection between the insertion post and the extrusion part 61, a clearance structure is provided. The clearance structure is not shown in the figure. The clearance structure provides a certain clearance space between the extrusion part 61 and the expansion cavity 11, thereby avoiding damage to the insertion section 21 and / or the inner wall of the housing 1 during the extrusion process, which helps to further improve the effectiveness and safety of the assembly of the inlet pipe 2 and the housing 1. Optionally, the avoidance structure also has a guide surface to facilitate the extension of the probe section 21 away from the connecting section 23 in a direction away from the inflow hole 13.

[0062] Furthermore, in this embodiment, the housing 1 is provided with an insertion part 101, which defines an inflow hole 13 and is adapted to connect with the inlet pipe 2. Specifically, one end of the inlet pipe 2 passes through the inflow hole 13 and forms a fixed section 22 and an insertion section 21. On the one hand, it can cooperate with the inlet pipe 2 to achieve a sealed connection at the inflow hole 13, ensuring the assembly effect of the diversion assembly 100. On the other hand, it can be used to limit or determine the insertion depth of the inlet pipe 2. By extending the depth of the inflow hole 13, the straightness of the housing 1 and the inlet pipe 2 can be effectively extended, thereby ensuring the alignment of the inlet pipe 2 and the housing 1.

[0063] like Figure 3 , Figures 5 to 8 As shown, the bottom of the housing 1 protrudes outward and forms an insertion portion 101, the interior of which defines an inflow hole 13. Optionally, the insertion portion 101 is connected to the inlet pipe 2, and the connection method includes, but is not limited to, welding, insertion, snap-fit, and bonding. In this embodiment, the insertion portion 101 and the inlet pipe 2 are connected by insertion and reinforced by welding, which helps to improve the connection between the insertion portion 101 and the inlet pipe 2.

[0064] It is important to further understand that the insert portion 101 has a first length L along the axial direction of the inflow hole 13, where L ≥ 2 mm. By limiting the length of the insert portion 101 along the axial direction of the inflow hole 13, it helps to ensure that the insert portion 101 has a certain overlap depth. On the one hand, it can cooperate with the insertion section 21 of the inlet pipe 2 to ensure the alignment effect between the inlet pipe 2 and the housing 1. On the other hand, it can improve the adaptability of the diversion assembly 100 to narrower installation spaces, improve the applicability of the diversion assembly 100, and help reduce the manufacturing cost of the housing 1.

[0065] It should be noted that the longer the insertion part 101 extends along the axial direction of the inlet hole 13, that is, the larger L is, the better the alignment effect between the inlet pipe 2 and the shell 1 is. It is also less likely that the assembly tilt problem will occur due to external factors during the installation process, which could lead to the risk of inlet flow deviation and cause the heat exchanger performance to degrade.

[0066] Furthermore, from the first end to the second end, the expansion cavity 11 has a first section 111 and a second section 112. The first section 111 is a first arc-shaped surface, and the second section 112 is a second arc-shaped surface. The first arc-shaped surface is a convex arc surface, and the second arc-shaped surface is a concave arc surface. The radius of curvature of the first arc-shaped surface is smaller than the radius of curvature of the second arc-shaped surface. The insertion section 21 fits and connects with the first section 111 to form a limiting surface.

[0067] Specifically, by setting the expansion cavity 11 into a first section 111 and a second section 112, and making the inner diameter of the expansion cavity 11 different in the first section 111 and the second section 112, not only can the influence of the probe section 21 on the volume of the expansion cavity 11 be minimized, but it also helps to ensure that the probe section 21 and the expansion cavity 11 have a better welding area.

[0068] It is necessary to understand that, such as Figures 3 to 8 As shown, from the first end to the second end, the expansion cavity 11 has a first section 111 and a second section 112. Within the first section 111, the first arcuate surface is a convex arcuate surface, meaning the first arcuate surface protrudes towards the expansion cavity. Optionally, the expansion cavity 11 is limited to having tangents at both ends of the first section 111 from the first end to the second end, and the two tangents are perpendicular. This arrangement helps to reduce the influence of the probe section 21 on the refrigerant flow, thereby reducing the influence of the welding point between the probe section 21 and the inner wall on the refrigerant flow.

[0069] In this embodiment, within the second section 112, the second arcuate surface is a concave arcuate surface, meaning it bulges away from the expansion cavity, and the limiting surface is in close contact with the first section 111. This arrangement provides the expansion cavity 11 with a larger flow space within the second section 112, effectively ensuring the flow of refrigerant and facilitating the installation and function of the diverter cone 4. It also helps reduce the impact of the insertion section 21 on the volume of the expansion cavity 11. Optionally, the radius of curvature of the first arcuate surface is smaller than that of the second arcuate surface, further enhancing the performance of the expansion cavity 11 and the installation of the insertion section 21.

[0070] In other embodiments of this application, such as Figure 7 As shown, from the first end to the second end, the probe section 21 includes a first part 211 and a second part 212 connected in sequence. The outer surface of the first part 211 is fitted to the inner wall to form a limiting surface, and the second part 212 extends in a direction away from the limiting surface. The first part 211 has the same structure as the probe section 21 described above. The second part 212 helps to form a turbulence structure, thereby improving the flow direction of the refrigerant. When the refrigerant is a gas-liquid two-phase system, the second part 212 helps to further improve the gas-liquid mixing effect and ensure the consistency of the distributor 10's flow distribution.

[0071] What needs further understanding is that, as before Figure 7 As shown, multiple second portions 212 can be configured, and these multiple second portions 212 are arranged in a ring around the axis of the inlet hole 13. Optionally, the number of second portions 212 is the same as the number of diversion holes 31, and the multiple second portions 212 are arranged in a ring around the axis of the inlet hole 13. Optionally, the multiple second portions 212 are arranged at equal intervals along the circumference of the inlet hole 13. This arrangement helps the refrigerant flowing to any adjacent diversion hole 31 to have the same or similar flow direction and velocity. Preferably, each second portion 212 and its corresponding diversion hole 31 are located on the same plane, and this plane passes through the axis of the inlet hole 13 or the diversion cone 4.

[0072] It should be pointed out that, such as Figure 7 As shown, the extension direction of the second part 212 can be from the first end to the second end, or it can be from the inlet hole 13 to the opening 12 and extend radially away from the inlet hole 13. In this case, the arrangement of the second part 212 makes it have a petal-shaped structure.

[0073] In addition, the second part 212, besides extending in the direction away from the limiting surface, can also be configured to fit and connect with the inner wall of the expansion cavity 11 along one of the radial directions of the inlet hole 13, so as to further increase the welding area between the inlet pipe 2 and the housing 1, and increase the accumulation area of ​​the solder during welding to improve reliability.

[0074] It is important to further understand that the second part 212 is also tubular. In this case, the diameter of the second part 212 is larger than the diameter of the connecting section 23 and / or the fixed section 22. This configuration can also improve the flow effect of the refrigerant in the expansion chamber 11. When the second part 212 is tubular, the inlet pipe 2 and the shell 1 can be assembled using the extrusion assembly described above, or the inlet pipe 2 can be pre-extruded using an extrusion device and installed into the interior of the expansion chamber 11 from the opening 12 to the inflow hole 13. The specific structure can be selected according to actual needs, and this application does not impose any restrictions on it.

[0075] In other embodiments of this application, such as Figure 8 As shown, along the circumference of the inlet pipe 2, the probe section 21 includes multiple positioning parts 213. These positioning parts 213 are arranged in a ring around the axis of the inflow hole 13, and each positioning part 213 has a working surface that fits and connects with the inner wall. The working surfaces of the multiple positioning parts 213 together form a limiting surface. Specifically, along the circumference of the inlet pipe 2, the probe section 21 has multiple positioning parts 213. These positioning parts 213 are respectively fitted and connected to the inner wall of the expansion cavity 11 by a compression assembly method, thereby forming a petal-shaped structure. This helps to further increase the welding area between the inlet pipe 2 and the shell 1, and increases the solder accumulation area during welding, improving reliability. Simultaneously, it ensures the sealing of the connection between the inlet pipe 2 and the shell 1, thus avoiding the risk of inlet flow deviation due to assembly tilt.

[0076] In addition, such as Figures 1 to 3 As shown, the diversion assembly 100 also includes a diversion plate 3, a diversion cone 4, a first connecting pipe 20, and a second connecting pipe 30. The second connecting pipe 30 is connected to the inlet pipe 2, which will not be described in detail in this embodiment. The diversion plate 3 is installed into the housing 1 from the side of the expansion cavity 11 with the opening 12 to seal the opening 12, and the diversion plate 3 has multiple diversion holes 31. In this embodiment, the diversion plate 3 has a circular plate structure, and the diversion plate 3 is installed into the housing 1 and seals the opening 12. At this time, the diversion plate 3 and the inlet hole 13 are suitable to be arranged on opposite sides of the expansion cavity 11, and the axis of the diversion plate 3 and the axis of the inlet hole 13 are on the same straight line. Multiple diversion holes 31 are provided on the diversion plate 3, and the multiple diversion holes 31 are arranged around the axis of the diversion plate 3.

[0077] like Figure 1As shown, a plurality of first connecting pipes 20 are connected to the flow divider plate 3, and each flow divider hole 31 is connected to a first connecting pipe 20 to regulate the flow distribution. In this embodiment, a plurality of fixing holes 51 are provided on the cover plate 5, and each fixing hole 51 is concentrically arranged with a flow divider hole 31. Simultaneously, there are multiple first connecting pipes 20, which are respectively connected to the flow divider plate 3, and each flow divider hole 31 is connected to a corresponding first connecting pipe 20. Specifically, the first connecting pipe 20 is adapted to be inserted into the fixing hole 51, thereby making the flow divider hole 31 and the first connecting pipe 20 concentrically arranged. The diameter of the fixing hole 51 is larger than the diameter of the flow divider hole 31; in this case, the cover plate 5 and the flow divider plate 3 cooperate to fix the first connecting pipe 20. By ensuring that the axis of the flow divider 3 is aligned with the axis of the inlet hole 13, and in conjunction with the structure of the expansion cavity 11, it is possible to further ensure that the refrigerant flows evenly to each flow divider hole 31, thus achieving the effect of refrigerant distribution while guaranteeing the uniformity of the refrigerant. Additionally, the second connecting pipe 30 is connected to the inlet pipe 2.

[0078] It should be noted that in this embodiment, the flow cross section of the diversion hole 31 is set to a circle along the flow direction of the diversion hole 31. In addition, the flow cross section of the diversion hole 31 can also be set to a square, rhomboid, elliptical, triangular or pentagonal structure, etc. There are no restrictions here. At the same time, in addition to being set to a cylindrical shape, the diversion hole 31 can also be set to a tapered or expanding structure, which will not be described in detail here.

[0079] Still Figure 3 As shown, the flow divider cone 4 is disposed on the flow divider plate 3, and the axis of the flow divider cone 4 is collinear with the axis of the inlet hole 13. The cone of the flow divider cone 4 is located inside the expansion cavity 11, and the cone is used to guide the refrigerant from the inlet hole 13 to the flow divider hole 31. Specifically, by setting the flow divider cone 4 and placing its cone inside the expansion cavity 11, a guiding surface can be formed in the flow divider cavity, so that the refrigerant can flow evenly to each flow divider hole 31 under the action of the guiding surface after entering the expansion cavity 11, ensuring the flow divider effect of the flow divider assembly 100. At the same time, the setting of the flow divider cone 4 can also cooperate with the structure of the expansion cavity 11 to further improve the flow divider effect of the distributor 10.

[0080] In this embodiment, the cone line of the flow divider cone 4 is collinear with the axis of the inlet hole 13. Furthermore, multiple flow dividers 31 are spaced apart circumferentially along the inlet hole 13 and spaced apart from the flow divider cone 4. In this embodiment, the flow divider cone 4 has a small-diameter end and a large-diameter end, with the large-diameter end connected to the flow divider plate 3. Optionally, the small-diameter end is disposed in the expansion cavity 11 and corresponds to the inlet hole 13. In this case, the refrigerant entering the expansion cavity 11 from the inlet hole 13 impacts the small-diameter end of the flow divider cone 4 and, under the action of the cone surface (drainage surface) of the flow divider cone 4, flows towards each flow divider hole 31, helping to ensure the uniformity and speed of refrigerant flow.

[0081] It is important to understand that the flow divider plate 3 and the flow divider cone 4 are integrally molded parts. By making the flow divider cone 4 and the flow divider plate 3 integrally molded parts, the manufacturing and assembly difficulty of the distributor 10 is reduced. Optionally, the flow divider cone 4 and the flow divider plate 3 are integrally stamped. This results in a simple structure and convenient manufacturing. In this case, the internal hollow design of the flow divider cone 4 helps reduce the manufacturing cost of the distributor 10 and ensures the flow guiding effect of the flow divider cone 4.

[0082] A second aspect of this utility model also provides a heating, ventilation, and air conditioning (HVAC) device 1000, which includes a first heat exchanger 200, a second heat exchanger 300, and a flow distribution assembly 100. The flow distribution assembly 100 is the aforementioned flow distribution assembly 100, wherein the expansion cavity 11 of the housing 1 is connected to the first heat exchanger 200, and the inlet pipe 2 is connected to the second heat exchanger 300. Specifically, the expansion cavity 11 is connected to the first heat exchanger 200 through a flow distribution plate 3 and a first connecting pipe 20, and the inlet pipe 2 is connected to the second heat exchanger 300.

[0083] Compared with the prior art, the HVAC equipment 1000 proposed in this utility model has the technical advantages of the above-mentioned diversion component 100, which will not be repeated here.

[0084] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A shunt component, characterized in that, include: A housing having a first end and a second end disposed opposite to each other, the housing including an inlet hole and an expansion cavity, the inlet hole being opened at the first end and communicating with the expansion cavity, the inner diameter of the expansion cavity gradually increasing from the first end to the second end; An inlet pipe having an insertion section passing through the inflow hole and housed within the expansion cavity, the insertion section having a limiting surface that conforms to the inner wall of the expansion cavity, the limiting surface being circumferentially disposed on the outer surface of the insertion section around the axis of the inflow hole.

2. The shunt component according to claim 1, characterized in that, From the first end to the second end, the inner diameter of the probe gradually increases, and the outer surface of the probe is attached to the inner wall to form the limiting surface.

3. The shunt component according to claim 1, characterized in that, From the first end to the second end, the probe section includes a first part and a second part connected in sequence. The outer surface of the first part is attached to the inner wall to form the limiting surface, and the second part extends in a direction away from the limiting surface.

4. The shunt component according to claim 3, characterized in that, The second part is configured as a tubular shape; Alternatively, the second part may be configured as a plurality of parts, and the plurality of the second parts may be arranged in a ring around the axis of the inflow hole.

5. The shunt component according to claim 1, characterized in that, Along the circumference of the inlet pipe, the probe section includes multiple positioning parts, which are arranged in a ring around the axis of the inflow hole. Each of the multiple positioning parts has a working surface that fits and connects with the inner wall, and the working surfaces of the multiple positioning parts together form the limiting surface.

6. The shunt component according to claim 1, characterized in that, The housing is provided with an insertion part, which defines the inflow hole and is adapted to be connected to the inlet pipe.

7. The shunt component according to claim 6, characterized in that, Along the axial direction of the inflow hole, the insertion part has a first length L, wherein L≥2mm.

8. The shunt component according to claim 1, characterized in that, From the first end to the second end, the expansion cavity has a first segment and a second segment connected in sequence. The first segment is a first arc-shaped surface, and the second segment is a second arc-shaped surface. The first arc-shaped surface is a convex arc surface, and the second arc-shaped surface is a concave arc surface. The radius of curvature of the first arc-shaped surface is smaller than the radius of curvature of the second arc-shaped surface. The probe segment fits and connects with the first segment to form the limiting surface.

9. The shunt assembly according to any one of claims 1-8, characterized in that, The second end of the housing is provided with an opening communicating with the expansion cavity; the diversion assembly further includes a diversion plate, which is disposed at the second end and blocks the opening, and the diversion plate has multiple diversion holes.

10. The shunt assembly according to claim 9, characterized in that, The diversion assembly further includes a first connecting pipe, and there are multiple first connecting pipes. The multiple first connecting pipes are respectively connected to the diversion plate, and each diversion hole is connected to a corresponding first connecting pipe. And / or, the diversion assembly further includes a diversion cone disposed on the diversion plate, and the axis of the diversion cone is collinear with the axis of the inlet hole.

11. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, include: First heat exchanger; Second heat exchanger; The diversion assembly as described in any one of claims 1-10, wherein the expansion cavity is connected to the first heat exchanger and the inlet pipe is connected to the second heat exchanger.

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