Flow dividing assembly and heating and ventilation equipment

Abstract

The invention particularly relates to a flow dividing assembly and heating and ventilation equipment. The flow dividing assembly comprises a distributor and a second connecting pipe. The distributor is provided with an inflow hole, an expansion cavity and a plurality of flow dividing holes which are formed in sequence, and the inflow hole communicates with the flow dividing holes through the expansion cavity. And at least part of the second connecting pipe penetrates through the inflow hole and extends to the insertion section in the expansion cavity. In the direction from the inflow hole to the diversion hole, the first end of the insertion section is used for allowing a refrigerant to flow in, the second end of the insertion section is in a closed state and located in the expansion cavity, a plurality of outflow holes are formed in the circumferential direction of the insertion section, and the inflow holes are located in the expansion cavity and spaced from the second end of the insertion section. According to the flow dividing assembly, the blind pipe structure at the second end of the insertion section is used for mixing the backflow effect caused by flowing of gas and liquid refrigerants at the inlet, the effect of fully mixing the gas and liquid refrigerants is achieved, and the problems of bias flow caused by non-uniform distribution of the refrigerants in the inflow pipe and non-uniform mixing of the refrigerants in an old distributor are solved.

Description

Technical Field

[0001] This invention relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and specifically to a flow distribution 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] Due to space constraints, the inlet (flow pipe) of the distributor often has a bend. In this case, the liquid phase of the two-phase refrigerant is prone to bend outward at the bend, that is, the refrigerant will flow outward due to uneven cross-sectional distribution in the flow pipe. Moreover, the two-phase refrigerant is prone to uneven mixing after entering the mixing chamber of the distributor, which will affect the subsequent heat exchange effect. Summary of the Invention

[0005] The purpose of this invention is to at least solve the problems of refrigerant flow deviation caused by uneven cross-sectional distribution and uneven refrigerant mixing in older distributors. This purpose is achieved through the following technical solution:

[0006] A first aspect of the present invention provides a shunt assembly comprising:

[0007] A distributor having an inlet hole, an expansion cavity, and a plurality of diversion holes arranged sequentially, wherein the inlet hole communicates with the plurality of diversion holes through the expansion cavity;

[0008] A second connecting tube is connected to the dispenser, and the second connecting tube has an insertion section, at least a portion of which passes through the inlet hole and extends into the interior of the expansion cavity;

[0009] Along the direction from the inlet hole to the branch hole, the first end of the insertion section is used for refrigerant to flow in, the second end of the insertion section is in a closed state and located inside the expansion cavity, and a plurality of outlet holes are provided along the circumference of the insertion section. The plurality of outlet holes are located inside the expansion cavity and are spaced apart from the second end of the insertion section.

[0010] The flow distribution assembly of the present invention includes a distributor and a second connecting pipe. The second connecting pipe has an insertion section, which is partially inserted into the expansion cavity of the distributor. By defining the position of the outlet hole in the insertion section, a blind tube structure can be formed at one end of the insertion section, and the blind tube structure is located inside the expansion cavity. At this time, due to the blind tube effect, the refrigerant forms a backflow at the inlet (outlet hole) of the expansion cavity, thereby achieving preliminary mixing of gas and liquid refrigerant. The mixed refrigerant can flow into the expansion cavity through circumferentially distributed small holes. The blind tube structure allows the backflow effect caused by the flow of gas and liquid refrigerant at the inlet (outlet hole) of the expansion cavity to mix, achieving a thorough mixing effect of gas and liquid refrigerant. This helps to solve the problems of uneven flow caused by uneven cross-sectional distribution of refrigerant in the inlet pipe and uneven refrigerant mixing in old-style distributors.

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

[0012] In some embodiments of the present invention, the distributor includes a plate body, the plate body and the inflow hole are respectively disposed on opposite sides of the expansion cavity, the plate body is provided with a plurality of diversion holes, and the plurality of diversion holes are arranged around the inflow hole as the center.

[0013] In some embodiments of the present invention, the second end of the insertion segment is connected to the plate body, and the second end of the insertion segment is closed by the plate body.

[0014] In some embodiments of the present invention, the second connecting tube further includes a cover body connected to the insertion section, and the second end of the insertion section is closed by the cover body.

[0015] In some embodiments of the present invention, the dispenser further includes:

[0016] A flow disruptor is disposed inside the expansion cavity and located between the plurality of outflow holes and the plurality of diversion holes.

[0017] In some embodiments of the present invention, the spoiler is configured as a mesh structure, the mesh structure being disposed on the distributor and covering the second end of the insertion section;

[0018] Alternatively, the spoiler may be configured as a mesh structure, which is disposed on the insertion section and accommodates the second end of the insertion section.

[0019] In some embodiments of the present invention, the insertion segment has a variable diameter portion located between the first end of the insertion segment and the outflow hole.

[0020] In some embodiments of the present invention, the inner diameter of the variable diameter portion first decreases and then increases along the direction from the inlet hole to the diversion hole.

[0021] In some embodiments of the present invention, one end of the second connecting pipe is provided with a diameter reduction structure. Along the direction from the second connecting pipe to the distributor, the diameter reduction structure consists of a diameter reduction section and an insertion section in sequence. The minimum inner diameter of the diameter reduction section is the same as the inner diameter of the insertion section.

[0022] In some embodiments of the present invention, the dispenser includes a housing having a first insert portion adapted to be connected to a second connecting tube.

[0023] In some embodiments of the present invention, the housing extends along a first direction to form the first insertion portion along the circumferential direction of the inflow hole, the first direction being the direction in which the housing faces the second connecting pipe;

[0024] Alternatively, along the circumference of the inlet hole, the housing extends in a second direction to form the first insertion portion, wherein the second direction is the direction in which the housing is away from the second connecting pipe.

[0025] A second aspect of the invention also provides a heating, ventilation, and air conditioning (HVAC) device comprising a flow distribution assembly as described in the invention.

[0026] Compared with the prior art, the HVAC equipment proposed in this invention has the technical advantages of the aforementioned 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 invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 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.

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

[0030] Figure 3 for Figure 2An enlarged schematic diagram of a portion of the shunt component shown;

[0031] Figure 4 for Figure 3 A cross-sectional schematic diagram of the shunt assembly shown;

[0032] Figure 5 for Figure 3 A cross-sectional schematic diagram of another structure of the shunt component shown;

[0033] Figure 6 for Figure 3 A cross-sectional schematic diagram of the third structure of the shunt component shown in the figure;

[0034] Figure 7 for Figure 3 A cross-sectional schematic diagram of the fourth structure of the shunt component shown;

[0035] Figure 8 for Figure 1 Another structural diagram of the shunt component shown;

[0036] Figure 9 for Figure 8 The diagram shows a cross-sectional view of the shunt assembly.

[0037] The markings in the attached diagram are as follows:

[0038] 1. Heating, ventilation, and air conditioning (HVAC) equipment;

[0039] 1000, Flow divider assembly; 2000, First heat exchanger; 3000, Second heat exchanger; 4000, Compressor; 5000, Refrigeration throttle valve; 6000, Four-way valve;

[0040] 100. Distributor;

[0041] 200. First connecting pipe;

[0042] 300. Second connecting pipe; 301. Inlet pipe; 3011. Outlet hole; 3012. Reduction structure; 30121. Insertion section; 301211. Variable diameter section; 30122. Reduction section; 3013. Injection section;

[0043] 30101, Cover;

[0044] 10. Shell; 103. Expansion cavity;

[0045] 11. First insertion part; 111. Inlet hole; 12. Mounting part;

[0046] 20. Plate body; 201. Diversion hole; 202. Insertion hole;

[0047] 21. First plate; 22. Second plate;

[0048] 50. Breathing components. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] like Figures 1-7 As shown, this invention proposes a flow-diverting assembly 1000 for use in a heating, ventilation, and air conditioning (HVAC) system 1. Specifically, the HVAC system 1 may include a compressor 4000, a valve structure, a first heat exchanger 2000, and a second heat exchanger 3000 connected in series. The compressor 4000 is used to compress refrigerant. The refrigerant compressed by the compressor 4000 flows sequentially through the second heat exchanger 3000 and the first heat exchanger 2000, and finally flows back to the compressor 4000. The valve structure includes a four-way valve 6000. The four-way valve 6000 has four ports, two of which are connected to the output and input ends of the compressor 4000, respectively, and the other two ports are connected to the input end of the second heat exchanger 3000 and the output end of the first heat exchanger 2000, respectively.

[0054] The first heat exchanger 2000 and the second heat exchanger 3000 enable the HVAC system 1 to switch between evaporator and condenser functions, i.e., heating mode and cooling mode. In this configuration, one of the heat exchangers 2000 and 3000 is located outside the target space as an outdoor unit, while the other is installed inside the target space as an indoor unit. The outdoor and indoor units work together to form a circulation path, enabling the HVAC system 1 to provide cooling, heating, dehumidification, and air purification to the target space, thereby achieving a comfortable environment. The HVAC system 1 can have one outdoor unit and multiple indoor units; this embodiment does not impose a specific limitation on this.

[0055] In this embodiment, the HVAC equipment 1 is an air conditioner (in other embodiments of the present invention, the HVAC equipment 1 includes, but is not limited to, multi-split air conditioners, heat pumps, water heaters, swimming pool machines, etc.), the first heat exchanger 2000 is an evaporator, and the second heat exchanger 3000 is a refrigerant. The first heat exchanger 2000 and the second heat exchanger 3000 are connected by a flow distribution assembly 1000 to achieve the distribution of refrigerant from the main gas / liquid collection pipe to multiple heat exchanger blocks. At this time, the valve structure also includes a refrigerant throttling valve 5000, which is connected and disposed between the flow distribution assembly 1000 and the second heat exchanger 3000.

[0056] In terms of overall design, such as Figures 2 to 7 As shown, the aforementioned diversion assembly 1000 includes a distributor 100, a first connecting pipe 200, and a second connecting pipe 300. The distributor 100 has an inflow hole 111, an expansion cavity 103, and a plurality of diversion holes 201 arranged sequentially. The inflow hole 111 communicates with the plurality of diversion holes 201 through the expansion cavity 103. The second connecting pipe 300 is connected to the distributor 100 and has an insertion section 30121. At least a portion of the insertion section 30121 passes through the inflow hole 111 and extends into the interior of the expansion cavity 103. Along the direction from the inflow hole 111 to the diversion holes 201, the first end of the insertion section 30121 is used for refrigerant inflow, and the second end of the insertion section 30121 is closed and located inside the expansion cavity 103. A plurality of outflow holes 3011 are provided circumferentially along the insertion section 30121, located inside the expansion cavity 103, and spaced apart from the second end of the insertion section 30121.

[0057] Specifically, by defining the position of the outflow hole 3011 in the insertion section 30121, one end of the insertion section 30121 can be formed as a blind tube output end, and the blind tube output end is located inside the expansion cavity 103. At this time, by utilizing the blind tube effect, the refrigerant can rush into the blind tube output end of the insertion section 30121 and form a backflow, thereby mixing the gas and liquid refrigerant. The mixed refrigerant can flow into the expansion cavity 103 through the circumferentially distributed small holes, which helps to improve the liquid separation problem caused by the inlet refrigerant deviation, and thus solves the problem that the gas and liquid two-phase refrigerant is prone to uneven mixing after entering the mixing cavity of the distributor 100.

[0058] It is necessary to understand that, such as Figure 3 , Figure 5 and Figure 7As shown, along the vertical direction, the distributor 100 has an inlet hole 111, an expansion cavity 103 and a plurality of diversion holes 201 arranged in sequence. In this embodiment, the expansion cavity 103 is generally hemispherical, the inlet cavity is located at the bottom of the expansion cavity 103, and the plurality of diversion holes 201 are located at the top of the expansion cavity 103. The refrigerant can enter the expansion cavity 103 from the inlet hole 111 and flow through the expansion cavity 103 to each diversion hole 201.

[0059] In this embodiment, the second connecting pipe 300 can be connected to the distributor 100. The second connecting pipe 300 includes an inlet pipe 301, and an insertion section 30121 is provided at one end of the inlet pipe 301 facing the second connecting pipe 300. The first end of the insertion section 30121 can communicate with the outside for refrigerant to flow in, and the second end of the insertion section 30121 is closed and located inside the expansion cavity 103. At this time, the insertion section 30121 can be fully inserted into the distributor 100 or partially inserted into the distributor 100. At the same time, multiple outflow holes 3011 are provided on the outer wall of the insertion section 30121, and the multiple outflow holes 3011 are spaced apart along the circumference of the insertion pipe. This allows the insertion section 30121 to form a blind pipe structure in the expansion cavity 103, so as to achieve the refrigerant mixing effect in advance. The mixed refrigerant flows out through the circumferentially distributed outflow holes 3011, which helps to improve the liquid separation problem caused by the inlet refrigerant deviation.

[0060] It should be noted that this application utilizes a blind tube structure to allow the backflow effect caused by the flow of gas and liquid refrigerant at the inlet (outlet hole 3011) of the expansion chamber to mix, achieving a thorough mixing effect of the gas and liquid refrigerant. This helps solve the problems of uneven refrigerant distribution in the inlet pipe causing flow deviation and uneven refrigerant mixing in older distributors. Furthermore, the multiple outlet holes 3011 eliminate the need for a flow divider cone within the expansion chamber 103, helping to address the issue of poor alignment between the flow divider cone and the inlet hole 111. Simultaneously, it simplifies the structure of the distributor 100, reduces its manufacturing difficulty, and thus improves the assembly effect of the flow divider assembly 1000.

[0061] Furthermore, the distributor 100 includes a plate 20, the plate 20 and the inlet hole 111 are respectively disposed on opposite sides of the expansion cavity 103, and the plate 20 is provided with a plurality of diversion holes 201, which are arranged around the inlet hole 111.

[0062] Specifically, by defining the distributor 100 with a plate 20, multiple diversion holes 201 can be arranged on the same horizontal plane (first plane). Simultaneously, since multiple outlet holes 3011 are located on the same horizontal plane (second plane), and the first and second planes are spaced apart, each diversion hole 201 is equidistant from the inlet hole 111, which helps ensure the smooth flow of the mixed refrigerant from the outlet hole 3011 to the diversion holes 201. Furthermore, by defining multiple diversion holes 201 arranged around the inlet hole 111, the flow of the mixed refrigerant from the outlet hole 3011 to the diversion holes 201 can be effectively improved.

[0063] It should be understood that, in this embodiment, the distributor 100 includes a housing 10 and a plate 20, wherein the housing 10 has a hemispherical structure, and the interior of the housing 10 defines a flow-dividing cavity. In this embodiment, the flow-dividing cavity includes an expansion cavity 103 and a mounting cavity. An inlet hole 111 and a mounting cavity are respectively provided at both ends of the expansion cavity 103. From the direction of the inlet hole 111 towards the mounting cavity, i.e., the flow direction of the refrigerant, the inner diameter of the expansion cavity 103 gradually increases. At this time, the minimum inner diameter of the expansion cavity 103 is the same as the diameter of the inlet hole 111, and the maximum inner diameter of the expansion cavity 103 is the same as the diameter of the mounting cavity. The mounting cavity is connected to the outside and forms the opening of the flow-dividing cavity. The refrigerant entering the expansion cavity 103 from the inlet hole 111 changes its flow direction due to the change in the flow space, which on the one hand allows the refrigerant to mix in the expansion cavity 103, improving the mixing effect. On the other hand, the change in the aperture of the expansion cavity 103 can guide the flow of refrigerant, and thus, in conjunction with the diversion hole 201, ensure that the refrigerant flows uniformly and quickly to the diversion hole 201.

[0064] It should be noted that, in this embodiment, the housing 10 includes a main body (not shown in the figure) and a mounting portion 12. The main body defines an expansion cavity 103 for distributing and mixing the refrigerant. The mounting portion 12 is located on one side of the main body for mounting the plate 20 or other components. The mounting portion 12 defines a mounting cavity, the diameter of which is the same as the maximum inner diameter of the expansion cavity 103.

[0065] It is necessary to further understand that the plate 20 has a circular plate structure and is suitable for placement in the mounting cavity. Furthermore, the plate 20 and the inlet hole 111 are suitable for placement on opposite sides of the expansion cavity 103, and the axis of the plate 20 and the axis of the inlet hole 111 are collinear. Simultaneously, the plate 20 has multiple diversion holes 201, which are arranged around the axis of the plate 20. Each diversion hole 201 is connected to a first connecting pipe 200 to regulate flow distribution. The diversion holes 201 and the first connecting pipes 200 are concentrically arranged. By ensuring that the axis of the plate 20 and the axis of the inlet hole 111 are collinear, and in conjunction with the structure of the expansion cavity 103, it is possible to further ensure that the refrigerant flows evenly to each diversion hole 201, achieving the effect of refrigerant diversion while ensuring the uniformity of the refrigerant flow.

[0066] In this embodiment, the plate 20 includes a first plate 21 and a second plate 22 connected to each other. Multiple diversion holes 201 are formed on the first plate 21, and multiple insertion holes 202 are formed on the second plate 22. The multiple diversion holes 201 and the multiple insertion holes 202 are connected in a one-to-one correspondence. At this time, the first plate 21 and the second plate 22 cooperate to form a countersunk hole structure. One end of the first connecting pipe 200 is inserted into the countersunk hole structure, and the first connecting pipe 200 is connected to the second plate 22 by welding, thereby achieving the connection and fixation of the first connecting pipe 200 to the housing 10.

[0067] It is important to understand that the first connecting pipe 200 is a rigid component, with one end of it housed within the countersunk structure. Multiple first connecting pipes 200 extend along different predetermined paths. By making the pipe body a rigid component, it facilitates the mating connection between the first connecting pipe 200 and the insertion part, enabling subsequent welding and fixing, and effectively preventing the first connecting pipe 200 from springing back after being inserted into the heat exchanger. The overall structure of the first connecting pipe 200 is simple, and its manufacturing process is easy, helping to reduce processing costs and allowing for a smaller overall size of the distributor 100. This reduces the space requirements, contributing to space savings and lightweight design.

[0068] In this embodiment, the outer diameter of the first connecting pipe 200 is the same as the inner diameter of the insertion hole 202, which helps to ensure the sealing of the connection between the first connecting pipe 200 and the distributor 100. At the same time, the inner diameter of the first connecting pipe 200 is larger than the outer diameter of the diversion hole 201. By limiting the diameter of the diversion hole 201 to be smaller than the inner diameter of the first connecting pipe 200, the refrigerant can change its flow direction after entering the first connecting pipe 200 due to the increased flow space, thereby helping to improve the mixing effect of the refrigerant.

[0069] like Figure 4As shown, in some embodiments of this application, the second end of the insertion segment 30121 is connected to the plate 20, and the second end of the insertion segment 30121 is closed by the plate 20. This arrangement eliminates the need for a flow divider cone in the distributor 100, which helps to simplify the structure of the distributor 100, improve the assembly effect of the flow divider assembly 1000, and effectively solve the problem of poor alignment between the flow divider cone and the inlet hole 111.

[0070] like Figure 5 As shown, in some other embodiments of this application, the second connecting pipe 300 further includes a cover 30101, which is connected to the insertion section 30121. The second end of the insertion section 30121 is closed by the cover 30101. In this case, the cover 30101 and the plate 20 are spaced apart. By providing the cover 30101, the second end of the insertion section 30121 can be ensured to be in a closed state. By limiting the spaced arrangement between the cover 30101 and the plate 20, there is sufficient accommodating space between the cover 30101 and the plate 20 for installing the aforementioned baffle 50 or other components, thereby reducing interference between components.

[0071] At this point, it should be noted that when the cover 30101 and the plate 20 are spaced apart, the outlet hole 3011 is located between the plate 20 and the inlet hole 111 in the vertical direction to ensure the output of the outlet hole 3011.

[0072] It is important to further understand that there is a first distance between the outlet orifice 3011 and the second end of the insertion section 30121. This first distance is 0.5 to 3 times the inner diameter of the insertion section 30121. By limiting the distance between the outlet orifice 3011 and the second end of the insertion section 30121, it helps to ensure that the refrigerant has sufficient flow space after entering the expansion cavity 103 from the outlet orifice 3011.

[0073] Meanwhile, multiple outflow holes 3011 are evenly spaced along the circumference of the insertion section 30121, and the number of outflow holes 3011 is greater than or equal to the number of diversion holes 201, which helps to ensure the flow effect of the high-temperature refrigerant in the distributor 100. Optionally, the number of outflow holes 3011 is the same as the number of diversion holes 201.

[0074] In addition to being a plate-like structure, the cover 30101 can also be configured as an axially symmetrical structure, such as a cone, a hemispherical structure, or an arc-shaped structure. For example... Figure 6 As shown, when the cover 30101 is configured as a cone, the small-diameter end of the cone faces the plate 20, and at this time, the interior of the cone is hollowed out and communicates with the interior of the insertion section 30121. Of course, correspondingly, the small-diameter end of the cone can also be configured in a direction away from the plate 20, that is, the small-diameter end of the cone is located inside the insertion section 30121.

[0075] like Figure 7 As shown, when the cover 30101 is configured as an arc-shaped structure, the arc surface of the cover 30101 protrudes towards the plate 20, and at this time, the interior of the cover 30101 is hollow and communicates with the interior of the insertion section 30121. Correspondingly, the arc surface of the cover 30101 can also protrude in a direction away from the plate 20. Setting the cover 30101 as an axially symmetrical structure helps to further ensure the flow effect of the refrigerant in the expansion cavity 103.

[0076] Additionally, it is necessary to understand that, such as Figure 6 and Figure 7 As shown, in the vertical direction, the outflow holes 3011 can be set in one row or multiple rows, and the number of outflow holes 3011 in each row can be the same or different. There are no further restrictions here. The number and arrangement of outflow holes 3011 can be determined by simulation design according to the actual situation.

[0077] Furthermore, the distributor 100 also includes a flow-dispersing element 50, which is disposed inside the expansion cavity 103 and located between the plurality of outflow holes 3011 and the plurality of diversion holes 201. By disposing of the flow-dispersing element 50 inside the expansion cavity 103, the uniformity of the flow distribution inside the expansion cavity 103 can be effectively improved, thereby further enhancing the mixing effect of the refrigerant and helping to optimize the flow distribution effect of the distributor 100. At the same time, the placement of the flow-dispersing element 50 can also adjust the flow direction of the refrigerant, thereby reducing noise and further improving the performance of the distributor 100. Optionally, the flow-dispersing element 50 is configured as a mesh structure, which is disposed on the distributor 100 and covers the second end of the insertion section 30121.

[0078] like Figure 4 As shown, in some embodiments of this application, the flow-dispersing element 50 is a mesh structure and is connected to the side of the plate 20 facing the expansion cavity 103. In this case, the mesh structure is spherical and protrudes towards the inlet hole 111, thereby dividing the expansion cavity 103 into two different flow cavities. Simultaneously, the second end of the insertion section 30121 passes through the mesh structure and abuts against the plate 20, ensuring that the mesh structure is located between the outlet hole 3011 and the diversion hole 201. Optionally, the mesh structure and the plate 20 are connected together by welding.

[0079] In some other embodiments of this application, such as Figure 5 As shown, the flow disruptor 50 is a mesh structure and is connected to the housing 10. In this case, the mesh structure is set in the shape of a spherical crown. The mesh structure is disposed inside the expansion cavity 103 and protrudes towards one side of the diversion hole 201, thereby dividing the expansion cavity 103 into two different flow cavities. Optionally, the mesh structure is connected to the housing 10 by welding.

[0080] In some other embodiments of this application, the spoiler 50 is configured as a mesh structure, which is disposed on the insertion section 30121 and accommodates the second end of the insertion section 30121. In this case, the mesh structure is configured as a spherical bottom shape, and the mesh structure is disposed inside the expansion cavity 103. The second end of the insertion section 30121 is accommodated inside the mesh structure and is spaced apart from the mesh structure.

[0081] It should be noted that the structure of the spoiler 50 includes, but is not limited to, the structure described above, such as setting the spoiler 50 as a plate-like structure and providing multiple spoiler holes on the spoiler 50.

[0082] Furthermore, the insertion section 30121 has a variable diameter portion 301211, which is located between the first end of the insertion section 30121 and the outlet hole.

[0083] Specifically, since the inlet of the distributor 100 may have a bend, the flow pattern of the refrigerant at the inlet of the distributor 100 is uneven. Although there is mixing at the blind tube outlet and the outlet hole 3011, there is still a situation where a small flow of refrigerant is not mixed evenly. By setting a variable diameter section 301211 in the insertion section 30121, the two-phase refrigerant at the inlet of the distributor 100 can be effectively accelerated to rush to the top, which helps to enhance the mixing effect at the blind tube outlet.

[0084] It should be understood that, in this embodiment, the variable diameter portion 301211 is provided in the portion of the insertion section 30121 located in the expansion cavity 103. Optionally, as... Figure 4 As shown, along the direction from the inlet hole 111 to the branch hole 201, the inner diameter of the variable diameter section 301211 first decreases and then increases. This arrangement accelerates the flow of refrigerant through the variable diameter section 301211, thereby improving the inlet condition of the distributor 100 in conjunction with the blind end output, and further enhancing the refrigerant mixing effect. Of course, in addition to this, the variable diameter section 301211 can be configured as a threaded section structure, a reduced diameter structure 3012, or an expanded diameter structure, etc.

[0085] It should be noted that the variable diameter section 301211 can be located outside the expansion cavity 103 to ensure that the refrigerant can flow in from the first end of the insertion section 30121 and flow through the variable diameter section 301211 to the blind tube output end.

[0086] Furthermore, a diameter reduction structure 3012 is provided at one end of the second connecting pipe 300. Along the direction from the second connecting pipe 300 to the distributor 100, the diameter reduction structure 3012 is provided with an injection section 3013, a diameter reduction section 30122 and an insertion section 30121 in sequence. The inner diameter of the injection section 3013 is larger than the inner diameter of the insertion section 30121.

[0087] Specifically, by defining the second connecting pipe 300 as having a reduced diameter structure 3012, and the reduced diameter structure 3012 including an insertion section 30121, the flow velocity of the refrigerant entering the insertion section 30121 can be effectively increased, thereby further improving the mixing effect of the refrigerant in conjunction with the blind pipe output end. At the same time, the reduced diameter structure 3012 can also work with the housing 10 to determine the insertion depth of the insertion section 30121, thereby ensuring the accuracy of the distributor 100 assembly.

[0088] It should be understood that the second connecting pipe 300 includes an inlet pipe 301, which has an injection section 3013, a reduced diameter section 30122, and an insertion section 30121 arranged sequentially. The reduced diameter section 30122 connects the injection section 3013 and the insertion section 30121, serving as a transition section. The inner diameter of the injection section 3013 is larger than that of the insertion section 30121. Optionally, the inner diameter of the injection section 3013 is 2 to 4 times the inner diameter of the insertion section 30121. This arrangement increases the refrigerant flow velocity through the inlet pipe 301, thereby further improving the uniformity of the refrigerant flow in conjunction with the blind pipe output end.

[0089] It should be further understood that the housing 10 is provided with a first insertion part 11, which is adapted to connect with the second connecting pipe 300. By providing the first insertion part 11, it can cooperate with the second connecting pipe 300 to achieve the connection between the housing 10 and the second connecting pipe 300, ensuring the assembly effect of the diversion assembly 1000. On the other hand, it can be used to limit or determine the insertion depth of the insertion section 30121. In this embodiment, the first insertion part 11 is welded and fixed to the circumferential surface of the second connecting pipe 300.

[0090] Furthermore, along the circumference of the inlet hole 111, the housing 10 extends in a first direction to form a first insertion part 11, the first direction being the direction in which the housing 10 faces the second connecting pipe 300; or, along the circumference of the inlet hole 111, the housing 10 extends in a second direction to form a first insertion part 11, the second direction being the direction in which the housing 10 is away from the second connecting pipe 300.

[0091] Specifically, by limiting the circumferential extension of the first insertion portion 11 along the inlet hole 111, the connection sealing between the housing 10 and the second connecting pipe 300 is improved, effectively preventing refrigerant from flowing out of the expansion chamber 103 along the inlet hole 111, thereby improving the connection effect of the diversion assembly 1000. Simultaneously, limiting the extension direction of the first insertion portion 11 may allow it to mate with the reduced diameter section 30122 of the second connecting pipe 300, limiting the insertion depth of the insertion section 30121, which may also facilitate solder accumulation, thereby improving the reliability of the weld at the inlet hole 111.

[0092] It is necessary to understand that, such as Figure 4 and Figure 5 As shown, along the circumference of the inlet hole 111, the housing 10 extends towards the second connecting pipe 300 and forms a first insertion portion 11. At this time, the end of the first insertion portion 11 facing away from the inlet hole 111 is welded and fixed to the circumferential surface of the second connecting pipe 300. Simultaneously, the end of the first insertion portion 11 facing away from the inlet hole 111 can abut against the reduced diameter section 30122, or be spaced apart from the reduced diameter section 30122, which helps to limit the insertion depth of the insertion section 30121, thereby ensuring the accuracy of the assembly of the diversion assembly 1000.

[0093] In addition, such as Figure 6 and Figure 7 As shown, when the insertion depth of the insertion section 30121 is relatively deep, along the circumference of the inflow hole 111, the housing 10 extends in the direction away from the second connecting pipe 300, forming the first insertion part 11. In this embodiment, the length of the first insertion part 11 is less than the vertical distance between the inflow hole 111 and the outflow hole 3011. At this time, the first insertion part 11 will not affect the communication between the outflow hole 3011 and the expansion cavity 103. Moreover, a concave welding groove is formed at the bottom of the housing 10. This welding groove can be welded and fixed to the circumference of the second connecting pipe 300, which not only facilitates the accumulation of solder but also effectively improves the reliability of the weld.

[0094] A second aspect of the present invention also provides a heating, ventilation and air conditioning (HVAC) device 1, which includes a first heat exchanger 2000, a second heat exchanger 3000, and a flow distribution assembly 1000, wherein the flow distribution assembly 1000 is the aforementioned flow distribution assembly 1000, and at this time, a first connecting pipe 200 is connected to the first heat exchanger 2000, and a distributor 100 is connected to the second heat exchanger 3000.

[0095] Compared with the prior art, the HVAC equipment 1 proposed in this invention has the technical advantages of the above-mentioned diversion component 1000, which will not be elaborated here.

[0096] 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 hole, an expansion cavity, and a plurality of diversion holes arranged sequentially, wherein the inlet hole communicates with the plurality of diversion holes through the expansion cavity; A second connecting tube is connected to the dispenser, and the second connecting tube has an insertion section, at least a portion of which passes through the inlet hole and extends into the interior of the expansion cavity; Along the direction from the inlet hole to the branch hole, the first end of the insertion section is used for refrigerant to flow in, the second end of the insertion section is in a closed state and located inside the expansion cavity, and a plurality of outlet holes are provided along the circumference of the insertion section. The plurality of outlet holes are located inside the expansion cavity and are spaced apart from the second end of the insertion section.

2. The shunt component according to claim 1, characterized in that, The distributor includes a plate body, which is respectively disposed on opposite sides of the expansion cavity with the inlet hole. The plate body is provided with a plurality of diversion holes, which are arranged around the inlet hole as the center.

3. The shunt component according to claim 2, characterized in that, The second end of the insertion segment is connected to the plate body, and the second end of the insertion segment is closed by the plate body.

4. The shunt component according to claim 2, characterized in that, The second connecting tube also includes a cover, which is connected to the insertion section, and the second end of the insertion section is closed by the cover.

5. The shunt assembly according to any one of claims 1 to 4, characterized in that, The distributor also includes: A flow disruptor is disposed inside the expansion cavity and located between the plurality of outflow holes and the plurality of diversion holes.

6. The shunt component according to claim 5, characterized in that, The spoiler is configured as a mesh structure, which is disposed on the distributor and covers the second end of the insertion section; Alternatively, the spoiler may be configured as a mesh structure, which is disposed on the insertion section and accommodates the second end of the insertion section.

7. The shunt assembly according to any one of claims 1 to 4, characterized in that, The insertion section has a variable diameter portion located between the first end of the insertion section and the outlet hole.

8. The shunt component according to claim 7, characterized in that, Along the direction from the inlet hole to the branch hole, the inner diameter of the variable diameter section first decreases and then increases.

9. The shunt assembly according to any one of claims 1 to 4, characterized in that, One end of the second connecting pipe is provided with a diameter reduction structure. Along the direction from the second connecting pipe to the distributor, the diameter reduction structure consists of a diameter reduction section and an insertion section in sequence. The minimum inner diameter of the diameter reduction section is the same as the inner diameter of the insertion section.

10. The shunt assembly according to any one of claims 1 to 4, characterized in that, The dispenser includes a housing, the housing being provided with a first insertion part, the first insertion part being adapted and connected to the second connecting tube.

11. The shunt assembly according to claim 10, characterized in that, Along the circumference of the inlet hole, the housing extends in a first direction to form the first insertion portion, the first direction being the direction in which the housing faces the second connecting pipe; Alternatively, along the circumference of the inlet hole, the housing extends in a second direction to form the first insertion portion, wherein the second direction is the direction in which the housing is away from the second connecting pipe.

12. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, The HVAC equipment includes a flow distribution component according to any one of claims 1 to 11.

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