Flow dividing assembly and heating and ventilation equipment

Abstract

The invention particularly relates to a flow dividing assembly and heating and ventilation equipment, and the flow dividing assembly is used for the heating and ventilation equipment and specifically comprises a distributor and a first connecting pipe. The distributor is provided with a plurality of flow dividing holes. And each shunting hole is correspondingly communicated with one first connecting pipe. The first connecting pipe is provided with a first connecting section and a second connecting section, the first connecting section is connected with the distributor, the second connecting section is used for being communicated with a first heat exchanger of the heating and ventilation equipment, and the extending direction of the first connecting section intersects with the extending direction of the second connecting section. The ratio of the length of the rigid portion to the length of the first connecting pipe is in the range of 60%-95%. According to the flow dividing assembly, the first connecting pipe is provided with the rigid part, and the circulation direction of the first connecting section and the circulation direction of the second connecting section are limited to intersect, so that the first connecting pipe is not prone to deformation, and the problem of springback generated when the connecting pipe and the heat exchanger are welded is solved; automatic welding of the heat exchanger and the connecting pipeline is achieved.

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] In the existing technology, the connecting pipe of the distributor assembly is generally a capillary tube. However, after the capillary tube is inserted into the long U-tube of the heat exchanger, it is easy to spring back when it is connected and welded to the heat exchanger. Springback can easily lead to weld blockage (partial blockage or even complete blockage). Fixing fixtures or manual fixation are required, which is not conducive to achieving automated welding. Summary of the Invention

[0003] The objective of this invention is to at least solve the problem of springback that easily occurs when the connecting pipes of existing distributor assemblies are connected to the heat exchanger. This objective is achieved through the following technical solution: A first aspect of the present invention provides a shunt assembly comprising: A distributor having multiple diversion orifices; A first connecting pipe, wherein each of the diversion holes is connected to a corresponding first connecting pipe; The first connecting pipe has a first connecting section and a second connecting section. The first connecting section is connected to the distributor, and the second connecting section is used to communicate with the first heat exchanger of the HVAC equipment. The extension direction of the first connecting section intersects the extension direction of the second connecting section. The first connecting pipe includes a rigid portion. Along the extension direction of the first connecting pipe, the length of the rigid portion is in the range of 60%-95% of the length of the first connecting pipe.

[0004] The flow distribution assembly of the present invention includes a distributor and a first connecting pipe, wherein the first connecting pipe is connected to the distributor, and there are multiple first connecting pipes. By limiting at least a portion of the first connecting pipe to be rigid, the first connecting pipe is less prone to deformation, which helps to solve the springback problem during welding of the connecting pipe to the heat exchanger, thereby facilitating automated welding of the heat exchanger and the connecting pipe. Simultaneously, by limiting the flow direction of the first connecting section to intersect with the flow direction of the second connecting section, the distance between the distributor and the first heat exchanger is reduced. Combined with the rigidity limitation of the first connecting pipe, the connection effect between the distributor and the first heat exchanger can be further improved, thereby enhancing the performance of the flow distribution assembly.

[0005] In addition, the shunt assembly according to the present invention may also have the following additional technical features: In some embodiments of the present invention, the first connecting pipe has a first wall thickness, which is in the range of 0.3 mm to 1.5 mm.

[0006] In some embodiments of the present invention, the distributor includes a plate body with a plurality of diversion holes. An insertion hole is provided on the side of the plate body facing the first connecting pipe. Each insertion hole is connected to a diversion hole. The first connecting segment is adapted to be connected to the insertion hole.

[0007] In some embodiments of the present invention, the inner diameter of the first connecting segment is larger than the diameter of the diversion hole.

[0008] In some embodiments of the present invention, the plate body includes: A first plate, wherein a plurality of the aforementioned diversion holes are provided on the first plate; The second plate is fitted onto the side of the first plate facing the first connecting segment. The second plate has a plurality of insertion holes, and one end of the first connecting segment is accommodated in the insertion hole and abuts against the first plate.

[0009] In some embodiments of the present invention, the first connecting tube further includes a flexible portion, the length of which is 10%-30% of the length of the first connecting tube along its extension direction.

[0010] In some embodiments of the present invention, the flexible portion is made of copper; And / or, the flexible portion is disposed between the first connecting segment and the second connecting segment, or at least one of the first connecting segment and the second connecting segment is the flexible portion.

[0011] In some embodiments of the present invention, the shunt assembly further includes a second connecting pipe, the second connecting pipe comprising: An inlet pipe, one end of which is connected to the distributor and communicates with the plurality of the branch holes, and the other end of which is used to supply refrigerant; An orifice plate is disposed inside the inlet pipe, and the orifice plate has through holes, the number of which is greater than or equal to the number of diversion holes.

[0012] In some embodiments of the present invention, the shunt component further includes: A first adapter is provided, one end of which is connected to the second connecting section, and the other end of which is used to be inserted into the inlet of the first heat exchanger.

[0013] In some embodiments of the present invention, one end of the first adapter is sleeved on the outside of the second connecting segment and is fixedly connected to the second connecting segment; Alternatively, one end of the first adapter is inserted into the interior of the second connecting segment and is fixedly connected to the second connecting segment.

[0014] A second aspect of the invention also provides a heating, ventilation, and air conditioning (HVAC) device, the HVAC device comprising a first heat exchanger and a flow divider assembly as described in the invention, wherein a first connecting pipe of the flow divider assembly is configured to communicate with the first heat exchanger.

[0015] 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

[0016] 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: 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. Figure 2 for Figure 1 The diagram shows the structure of the shunt component. Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the shunt assembly shown; Figure 4 for Figure 1 The diagram shows the connection between the flow splitter and the first heat exchanger. Figure 5 for Figure 4 A partial cross-sectional view showing the connection between the flow splitter assembly and the first heat exchanger; Figure 6 for Figure 1 A partial cross-sectional view of the flow splitter assembly of another structure shown connected to the first heat exchanger.

[0017] The markings in the attached diagram are as follows: 1. Heating, ventilation, and air conditioning (HVAC) equipment; 1000, Flow divider assembly; 2000, First heat exchanger; 3000, Second heat exchanger; 4000, Compressor; 5000, Refrigeration throttle valve; 6000, Four-way valve; 2001, Imported; 100. Distributor; 200, First connecting pipe; 250, First connecting section; 260, Second connecting section; 300. Second connecting pipe; 301. Inlet pipe; 10. Shell; 103. Expansion cavity; 11. First insertion part; 111. Inlet hole; 12. Mounting part; 20. Plate body; 201. Diversion hole; 202. Insertion hole; 205. Mounting hole; 21. First plate; 22. Second plate; 30. Flow divider cone; 60. First adapter; 80. Perforated plate. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] like Figures 1-6 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.

[0023] 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.

[0024] 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 systems, heat pumps, water heaters, swimming pool machines, etc.), the first heat exchanger 2000 is an evaporator, and the second heat exchanger 3000 is a refrigerant. The first heat exchanger 2000 and the second heat exchanger 3000 are connected by a flow distribution assembly 1000 to achieve the distribution of refrigerant from the main gas / liquid collection pipe to multiple heat exchanger blocks. At this time, the valve structure also includes a refrigerant throttling valve 5000, which is connected and disposed between the flow distribution assembly 1000 and the second heat exchanger 3000.

[0025] In terms of overall design, such as Figures 2 to 4 As shown, the aforementioned diversion assembly includes a distributor 100 and a first connecting pipe 200. The distributor 100 has multiple diversion holes 201, each of which is connected to a corresponding first connecting pipe 200. The first connecting pipe 200 has a first connecting section 250 and a second connecting section 260. The first connecting section 250 is used to communicate with a first heat exchanger of the HVAC equipment, and the second connecting section 260 is connected to the distributor 100. The extending directions of the first connecting section 250 and the second connecting section 260 intersect. The first connecting pipe 200 includes a rigid portion, and the ratio of the length of the rigid portion to the length of the first connecting pipe 200 is in the range of 60%-95%.

[0026] Specifically, by limiting at least a portion of the first connecting pipe 200 to be rigid, the first connecting pipe 200 is less prone to deformation, which helps solve the springback problem during welding of the connecting pipe to the heat exchanger, and thus facilitates automated welding of the heat exchanger and the connecting pipe. Simultaneously, by limiting the flow direction of the first connecting section 250 to intersect with the flow direction of the second connecting section 260, the distance between the distributor 100 and the first heat exchanger is reduced. Combined with the rigidity limitation of the first connecting pipe 200, the connection effect between the distributor 100 and the first heat exchanger can be further improved, thereby enhancing the performance of the flow distribution assembly.

[0027] It should be understood that, in this embodiment, the flow distribution assembly includes a distributor 100, a first connecting pipe 200, and a second connecting member. The distributor 100 has an inlet 111, an expansion cavity 103, and multiple flow distribution holes 201 arranged sequentially. The inlet 111 communicates with the multiple flow distribution holes 201 through the expansion cavity 103. The first connecting pipe 200 and the second connecting member are respectively connected to the distributor 100. The first connecting pipe 200 communicates with the flow distribution holes 201, and the second connecting pipe 200 communicates with the inlet 111. Optionally, the expansion cavity 103 is generally hemispherical, with the inlet 111 located at the bottom of the expansion cavity 103 and the multiple flow distribution holes 201 located at the top of the expansion cavity 103. The refrigerant can enter the expansion cavity 103 from the inlet 111 and flow through the expansion cavity 103 to each flow distribution hole 201. This arrangement helps ensure that the refrigerant can flow evenly from the inlet 111 to each flow distribution hole 201.

[0028] In this embodiment, at least a portion of the first connecting pipe 200 is rigid. The first connecting pipe 200 has a first connecting section 250, a second connecting section 260, and a bent section. The first connecting section 250 and the second connecting section 260 are both straight sections. The bent section is connected between the first connecting section 250 and the second connecting section 260 to change the flow direction of the refrigerant. Specifically, the first connecting section 250 is connected to the expansion cavity 103 through the diversion hole 201 of the distributor 100, and the second connecting section 260 is connected to the first heat exchanger of the HVAC equipment. At the same time, the extension direction of the first connecting section 250 intersects the extension direction of the second connecting section 260. Optionally, the extension direction of the first connecting section 250 is perpendicular to the extension direction of the second connecting section 260. By defining the structure and material of the first connecting pipe 200, on the one hand, the first connecting pipe 200 is less prone to deformation. On the other hand, the layout can be arranged according to the space between the distributor 100 and the first heat exchanger, thereby improving the connection effect between the distributor 100 and the first heat exchanger. This setting helps to solve the springback problem when welding the connecting pipe and the heat exchanger, and realizes the automated welding of the heat exchanger and the connecting pipe.

[0029] It should be noted that at least a portion of the first connecting pipe 200 is rigid, where rigidity refers to its resistance to deformation. Optionally, the first connecting pipe 200 is entirely made of a material with high rigidity, such as stainless steel or carbon steel. In this case, the first connecting pipe 200 is not easily deformed and can effectively solve the springback problem during welding of the connecting pipe to the heat exchanger. Alternatively, at least a portion of the first connecting pipe 200 is made of a material with high rigidity. In this case, the first connecting pipe 200 can also effectively solve the springback problem during welding of the connecting pipe to the heat exchanger.

[0030] Furthermore, the first connecting pipe 200 can be bent and shaped using existing equipment to achieve the desired shape. In this embodiment, each first connecting pipe 200 of the distribution assembly extends along a single path, and when the distributor 100 is connected to the first heat exchanger, the multiple first connecting pipes 200 are spaced apart.

[0031] Furthermore, the distributor 100 includes a plate 20, on which a plurality of diversion holes 201 are provided. On the side of the plate 20 facing the first connecting pipe 200, there are insertion holes 202. Each insertion hole 202 is connected to a diversion hole 201. The first connecting section 250 is adapted to be connected to the insertion hole 202.

[0032] Specifically, by providing a plate 20 with a diversion hole 201, it can be used in conjunction with the expansion cavity 103 to achieve synchronous output of refrigerant after diversion. At the same time, an insertion hole 202 is provided on the plate 20 so that it can be adapted to connect with the first connecting pipe 200. On the one hand, it can provide positioning for subsequent welding processes and ensure the connection effect between the first connecting pipe 200 and the distributor 100. On the other hand, it can effectively ensure that the first connecting section 250 of the first connecting pipe 200 and the diversion hole 201 are concentrically set, which helps to ensure the refrigerant transmission effect.

[0033] It is necessary to understand that, such as Figure 3 As shown, the distributor 100 includes a housing 10 and a plate 20. The housing 10 has a hemispherical structure, and its interior 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 refrigerant flow direction, 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 flow space. This 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.

[0034] It should be noted that in this embodiment, the housing 10 includes a main body (not shown in the figure) and a mounting part 12. The main body defines an expansion cavity 103 for distributing and mixing the refrigerant. The mounting part 12 is located on one side of the main body for mounting the plate 20 or other components. The mounting part 12 defines a mounting cavity, the diameter of which is the same as the maximum inner diameter of the expansion cavity 103.

[0035] like Figure 3 As shown, in this embodiment, the plate 20 has a circular plate structure and is suitable for being disposed in the mounting cavity. The plate 20 and the inlet hole 111 are suitable for being disposed 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 pipe 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.

[0036] What needs further understanding is, such as Figure 3 As shown, the plate 20 includes a first plate 21 and a second plate 22. The first plate 21 has multiple diversion holes 201. The second plate 22 is fitted to one side of the first plate 21 and has multiple insertion holes 202. The first plate 21 and the second plate 22 cooperate to form a countersunk hole structure. A first connecting segment 250 is accommodated in the insertion hole 202 and abuts against the first plate 21, i.e., the first connecting segment 250 is inserted into the countersunk hole structure. At this time, the first connecting segment 250 can be welded to the second plate 22. This, combined with the connection between the peripheral wall of the first connecting tube 200 and the wall of the insertion hole 202, helps to increase the connection area between the first connecting tube 200 and the plate 20, thereby improving the reliability of the connection.

[0037] In this embodiment, the diameter of the insertion hole 202 is 3mm to 6mm, and the outer diameter of the first connecting tube 200 is the same as the diameter of the insertion hole 202. This arrangement effectively ensures a sealed connection between the first connecting tube 200 and the insertion hole 202. Simultaneously, the first connecting tube 200 has a first wall thickness of 0.3mm to 1.5mm. By limiting the wall thickness of the first connecting tube 200, the rigidity of the first connecting tube 200 and its conveying effect can be further guaranteed.

[0038] Furthermore, the diameter of the diversion orifice 201 is smaller than the inner diameter of the first connecting pipe 200. By limiting the diameter of the diversion orifice 201 to be smaller than the inner diameter of the first connecting pipe 200, the refrigerant, after entering the first connecting pipe 200, changes its flow direction due to the increased flow space, thereby helping to improve the mixing effect of the refrigerant. Optionally, the diameter of the diversion orifice 201 is 0.4 to 0.8 times the inner diameter of the first connecting pipe 200. Optionally, the diameter of the diversion orifice 201 is 0.5 times the inner diameter of the first connecting pipe 200. And because the diversion orifice 201 and the first connecting pipe 200 are concentrically arranged, the flow of the refrigerant is more uniform, ensuring a better mixing effect.

[0039] Furthermore, the first connecting pipe 200 has a flexible portion, the length of which is 10%-30% of the length of the first connecting pipe 200.

[0040] Specifically, by limiting the first connecting pipe 200 to have a flexible portion, the first connecting pipe 200 can be made locally flexible, thereby allowing for slight adjustments to the position of the second connecting section 260, i.e. the insertion position of the first connecting pipe 200. This helps improve the applicability of the first connecting pipe 200 and avoids the situation where the first connecting pipe 200 cannot be inserted into the first heat exchanger.

[0041] It should be understood that the first connecting pipe 200 has a flexible portion and a rigid portion. The rigid portion is used to connect with the distributor 100 and the first heat exchanger, thereby ensuring the welding of the first connecting pipe 200 to the distributor 100 or the first heat exchanger. Simultaneously, the flexible portion is used to adjust the relative positions of the first connecting section 250 and the second connecting section 260, thereby enabling better adaptation and connection with the distributor 100 or the first heat exchanger.

[0042] It should be noted that, due to cumulative tolerance considerations, all first connecting pipes 200 are made of a high-rigidity material, which may lead to situations where the first connecting pipe 200 cannot be inserted into the first heat exchanger. By limiting the proportion of the flexible portion in the first connecting pipe 200, on the one hand, the first connecting pipe 200 has a certain degree of flexibility, allowing for minor adjustments to its insertion position; on the other hand, it ensures the rigidity of the first connecting pipe 200, preventing springback during welding to the first heat exchanger.

[0043] It is important to understand that the flexible portion is the less rigid part, and therefore more prone to deformation compared to the rigid portion. In this embodiment, the flexible portion is made of copper or other materials. Optionally, the flexible portion is made of copper. The flexible portion can be positioned between the first connecting section 250 and the second connecting section 260, meaning that all or part of the bent section can be made of copper, or the flexible portion can be positioned at both ends of the first connecting pipe 200, i.e., at least one of the first connecting section 250 and the second connecting section 260 is a flexible portion. The second connecting section 260 will be described as an example below. The second connecting section 260 can be entirely made of copper, or the connection between the second connecting section 260 and the bent section can be made of copper, or the insertion end of the second connecting section 260 and the first heat exchanger can be made of copper, thus enabling the insertion connection of the first connecting pipe 200. Accordingly, the configuration of the first connecting section 250 can refer to the configuration of the second connecting section 260.

[0044] Furthermore, the diversion assembly also includes a first adapter 60, one end of which is connected to the second connecting section 260, and the other end of which is used to be inserted into the inlet 2001 of the first heat exchanger.

[0045] Specifically, by setting the first adapter 60, the rigidity of the first connecting pipe 200 can be ensured while improving the connection effect of the first connecting pipe 200. The setting of the first adapter 60 helps to reduce the occurrence of situations where the first connecting pipe 200 cannot be inserted into the first heat exchanger. At the same time, it also enables the first connecting pipe 200 to be compatible with the inlet 2001 of the first heat exchanger of different sizes, thereby improving the applicability of the flow distribution component and improving the connection method between the first connecting pipe 200 and the inlet 2001.

[0046] It should be understood that in this embodiment, the inlet 2001 of the first heat exchanger is fixed to the first connecting pipe 200 by welding. However, when the materials of the inlet 2001 of the first heat exchanger and the first connecting pipe 200 are different, such as the first connecting pipe 200 being a stainless steel pipe while the first heat exchanger is a copper or aluminum pipe, a first adapter 60 is provided between the first connecting pipe 200 and the first heat exchanger to facilitate welding. The material of the first adapter 60 is the same as that of the inlet 2001 of the first heat exchanger, which helps to improve the connection effect between the flow distribution component and the first heat exchanger.

[0047] It is necessary to further understand that the connection between the first heat exchanger and the first adapter 60 can be achieved through methods including, but not limited to, plug-in, screw-in, welding, snap-fit, and adhesive bonding. For example... Figure 5As shown, in some embodiments of this application, one end of the first adapter 60 is inserted into the second connecting section 260 and is fixedly connected to the second connecting section 260. Here, "fixedly connected" refers to welding the end face of the second connecting section 260 facing the first adapter 60 to the circumferential surface of the first adapter 60. In actual operation, the first heat exchanger and the first adapter 60 are pre-connected and fixed using a welding process (manual welding or automated welding). At this time, the pipe diameter and wall thickness of the first adapter 60 can be the same as or different from those of the connecting pipe.

[0048] like Figure 6 As shown, in some other embodiments of this application, one end of the first adapter 60 is sleeved on the outside of the second connecting segment 260 and fixedly connected to the second connecting segment 260. In this case, the end face of the first adapter 60 facing the second connecting segment 260 is welded to the circumferential surface of the second connecting segment 260. The actual process can refer to the above operation.

[0049] Furthermore, the distribution assembly also includes a second connecting pipe 300, which includes an inlet pipe 301 and an orifice plate 80. One end of the inlet pipe 301 is connected to the distributor 100 and communicates with a plurality of distribution holes 201, while the other end of the inlet pipe 301 is used for refrigerant inflow. The orifice plate 80 has through holes, the number of which is greater than or equal to the number of distribution holes 201.

[0050] Specifically, by setting the inlet pipe 301 and the orifice plate 80, preliminary diversion and mixing can be carried out before the refrigerant enters the distributor 100, which helps to further improve the mixing effect of the refrigerant in conjunction with the diversion cone 30 described below.

[0051] It should be further understood that, in this embodiment, the bottom of the dispenser 100 protrudes outward and forms a first insertion portion 11. An inflow hole 111 is defined inside the first insertion portion 11, and an inlet pipe 301 is inserted inside the first insertion portion 11. At this time, as... Figure 3 As shown, the inlet pipe 301 and the housing 10 cooperate to form a Venturi tube structure, thereby increasing the flow velocity by reducing the flow area and creating a low-pressure area at the throat. The change in refrigerant flow velocity helps to further improve the refrigerant mixing effect and increase the flow velocity of the refrigerant to each diversion hole 201, thus ensuring the diversion effect of the diversion assembly 1000.

[0052] In this embodiment, the inlet pipe 301 includes an injection cavity (not shown) and a connecting cavity (not shown). The injection cavity is used for the inflow of refrigerant, and the connecting cavity is located inside the first insertion part 11 to further reduce the flow area of ​​the inlet hole 111. After flowing through the injection cavity, the refrigerant enters the expansion cavity 103 through the connecting cavity. At this time, the orifice plate 80 is adapted to be disposed inside the injection cavity. The number of through holes is the same as the number of diversion holes 201, which effectively ensures the mixing effect of the refrigerant after flowing through the through holes, and also cooperates with the diversion holes 201 to ensure the flow effect of the refrigerant.

[0053] It should be noted that, in addition to setting an orifice plate 80 inside the inlet pipe 301, the mixing effect of the refrigerant when entering the distributor 100 can also be achieved by setting a filter structure or using a threaded pipe.

[0054] Furthermore, the flow splitting assembly 1000 also includes a flow splitting cone 30, which is disposed on the plate 20. The axis of the flow splitting cone 30 is on the same straight line as the axis of the inlet hole 111. The flow splitting cone 30 is used to guide the fluid from the inlet hole 111 to the flow splitting hole 201.

[0055] Specifically, by setting the flow divider cone 30, a flow guiding surface can be formed in the expansion cavity 103, thereby uniformly distributing the refrigerant to each flow divider hole 201 and ensuring the flow distribution effect of the flow divider assembly 1000. At the same time, the setting of the flow divider cone 30 can also cooperate with the structure of the expansion cavity 103, thereby further improving the flow distribution effect of the distributor 100.

[0056] It should be understood that a flow divider cone 30 is provided on the plate 20, and the cone line of the flow divider cone 30 is collinear with the axis of the inlet hole 111. At this time, multiple flow dividers 201 are arranged around the axis of the inlet hole 111 and spaced apart from the flow divider cone 30. In this embodiment, the flow divider cone 30 has a small-diameter end and a large-diameter end, wherein the large-diameter end is connected to the plate 20. Optionally, the small-diameter end is disposed in the expansion cavity 103 and corresponds to the inlet hole 111. In this case, the refrigerant entering the expansion cavity 103 from the inlet hole 111 will impact the small-diameter end of the flow divider cone 30 and, under the action of the cone surface of the flow divider cone 30, flow to each flow divider hole 201, which helps to ensure the uniformity and speed of refrigerant flow.

[0057] It should be noted that, in addition to placing the small-diameter end in the expansion cavity 103, the small-diameter end can also be placed on the side opposite to the expansion cavity 103, that is, placed inside the mounting cavity. In this case, the internal hollowing-out arrangement of the flow divider cone 30 forms a conical flow guiding space. The refrigerant entering the expansion cavity 103 from the inlet hole 111 will impact the small-diameter end of the flow divider cone 30, and under the action of the conical surface of the flow divider cone 30, it will flow to each flow divider hole 201. Since the inlet hole 111 and the small-diameter end are on the same straight line, the flow guiding space is on the same horizontal plane, and the pressure is the same or similar everywhere, which helps to ensure the uniformity of refrigerant flow.

[0058] It is important to further understand that the flow divider cone 30 and the plate 20 are separate structures. Specifically, the first plate 21 has a clearance hole in its middle, and the second plate 22 has a mounting hole 205 in its middle. The flow divider cone 30 includes a cone, an extension section, and a flange. The cone, extension section, and flange are connected sequentially in the direction from the inflow hole 111 toward the plate 20. The extension section is adapted to the inner wall of the clearance hole. Optionally, the cone is disposed inside the expansion cavity 103, the flange is adapted to the inner wall of the mounting hole 205, and the flange is fitted to the side of the plate 20 opposite to the expansion cavity 103. By providing an extension section that can connect with the clearance hole, a sealed connection between the plate 20 and the flow divider cone 30 is achieved. Meanwhile, the flange setting helps to further improve the sealing effect between the plate 20 and the flow divider cone 30; on the other hand, it can also increase the welding area between the flow divider cone 30 and the plate 20, which helps to further improve the connection effect between the flow divider cone 30 and the plate 20.

[0059] It should be noted that in some other embodiments of this application, the diverting cone 30 and the plate 20 are integrally formed. By making the diverting cone 30 and the plate 20 integrally formed, the manufacturing and assembly difficulty of the distributor 100 is reduced. Optionally, the internal hollowing-out design of the diverting cone 30 helps to reduce the manufacturing cost of the distributor 100 and ensures the guiding effect of the diverting cone 30.

[0060] Furthermore, the small-diameter end of the cone is located in the expansion cavity 103 and is spaced apart from the inlet hole 111, which helps to ensure the flow-dividing effect of the flow-dividing cone 30. At the same time, the flow-dividing cone 30 can be configured with different structures such as a cone, triangular pyramid, square pyramid, or pentagonal pyramid to accommodate the number of flow-dividing holes 201 and ensure the flow-dividing effect. 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 and the aforementioned diversion assembly 1000, wherein a first connecting pipe 200 of the diversion assembly 1000 is connected in communication with the first heat exchanger 2000.

[0061] 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.

[0062] 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 flow distribution assembly for use in HVAC equipment, characterized in that, include: A distributor having multiple diversion orifices; The distributor is connected to a plurality of first connecting pipes, and each of the diversion holes is connected to a corresponding first connecting pipe. The first connecting pipe has a first connecting section and a second connecting section. The first connecting section is connected to the distributor, and the second connecting section is used to communicate with the first heat exchanger of the HVAC equipment. The extension direction of the first connecting section intersects the extension direction of the second connecting section. The first connecting pipe includes a rigid portion. Along the extension direction of the first connecting pipe, the length of the rigid portion is in the range of 60%-95% of the length of the first connecting pipe.

2. The shunt component according to claim 1, characterized in that, The first connecting pipe has a first wall thickness, which is in the range of 0.3 mm to 1.5 mm.

3. The shunt component according to claim 1, characterized in that, The distributor includes a plate with a plurality of diversion holes. An insertion hole is provided on the side of the plate facing the first connecting pipe. Each insertion hole is connected to a corresponding diversion hole. The first connecting section is adapted to connect with the insertion hole.

4. The shunt component according to claim 3, characterized in that, The inner diameter of the first connecting section is larger than the diameter of the diversion hole.

5. The shunt component according to claim 3, characterized in that, The plate body includes: A first plate, wherein a plurality of the aforementioned diversion holes are provided on the first plate; The second plate is fitted onto the side of the first plate facing the first connecting segment. The second plate has a plurality of insertion holes, and one end of the first connecting segment is accommodated in the insertion hole and abuts against the first plate.

6. The shunt component according to claim 1, characterized in that, The first connecting tube further includes a flexible portion, the length of which is 10%-30% of the length of the first connecting tube along its extension direction.

7. The shunt component according to claim 6, characterized in that, The flexible part is a copper component; And / or, the flexible portion is disposed between the first connecting segment and the second connecting segment, or at least one of the first connecting segment and the second connecting segment is the flexible portion.

8. The shunt component according to claim 1, characterized in that, The shunt assembly further includes a second connecting pipe, the second connecting pipe comprising: An inlet pipe, one end of which is connected to the distributor and communicates with the plurality of the branch holes, and the other end of which is used to supply refrigerant; An orifice plate is disposed inside the inlet pipe, and the orifice plate has through holes, the number of which is greater than or equal to the number of diversion holes.

9. The shunt assembly according to any one of claims 1 to 8, characterized in that, The splitter component also includes: A first adapter is provided, one end of which is connected to the second connecting section, and the other end of which is used to be inserted into the inlet of the first heat exchanger.

10. The shunt assembly according to claim 9, characterized in that, One end of the first adapter is sleeved on the outside of the second connecting segment and is fixedly connected to the second connecting segment; Alternatively, one end of the first adapter is inserted into the interior of the second connecting segment and is fixedly connected to the second connecting segment.

11. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, The HVAC equipment includes a first heat exchanger and a flow divider assembly as described in any one of claims 1 to 10, wherein a first connecting pipe of the flow divider assembly is connected in communication with the first heat exchanger.

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