Flow dividing assembly and heating and ventilation equipment

Abstract

The utility model particularly relates to a shunting assembly and heating and ventilation equipment, and the shunting assembly is used for the heating and ventilation equipment and 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] The utility model relates to the technical field of HVAC equipment, in particular to a diversion component and HVAC equipment. Background Art

[0002] In the prior art, the connecting pipe of the distributor assembly generally adopts a capillary tube. However, after the capillary tube is inserted into the long U-tube of the heat exchanger, it is easy to rebound when connecting and welding with the heat exchanger. The rebound may easily lead to welding blockage (half blockage or even full blockage), and it is necessary to use fixed tooling or manual fixation, which is not conducive to the realization of automated welding. Utility Model Content

[0003] The purpose of the present invention is to at least solve the problem of springback when the connecting pipe of the existing distributor assembly is connected to the heat exchanger. This purpose is achieved through the following technical solutions:

[0004] The first aspect of the present invention provides a flow diversion assembly, comprising:

[0005] a distributor having a plurality of diversion holes;

[0006] a first connecting pipe, wherein each of the diversion holes is connected to a corresponding first connecting pipe;

[0007] 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 with the extension direction of the second connecting section. The first connecting pipe includes a rigid part. Along the extension direction of the first connecting pipe, the ratio of the length of the rigid part to the length of the first connecting pipe is in the range of 60%-95%.

[0008] The flow diversion assembly described in 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 the rigidity of at least a portion of the first connecting pipe, the first connecting pipe is less likely to deform, which helps to solve the problem of springback when welding the connecting pipe to the heat exchanger, thereby facilitating the automated welding of the heat exchanger and the connecting pipeline. At the same time, by limiting the flow direction of the first connecting section to the intersection of the flow direction of the second connecting section, the spacing between the distributor and the first heat exchanger is reduced. Combined with the rigidity limitation of the first connecting pipe, the connection between the distributor and the first heat exchanger can be further improved, thereby enhancing the use effect of the flow diversion assembly.

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

[0010] In some embodiments of the present invention, the first connecting pipe has a first wall thickness, and the first wall thickness is in the range of 0.3 mm to 1.5 mm.

[0011] In some embodiments of the present invention, the distributor includes a plate body, a plurality of diversion holes are provided on the plate body, an insertion hole is provided on the side of the plate body facing the first connecting pipe, each of the insertion holes is connected to a corresponding diversion hole, and the first connecting section is adapted to be connected to the insertion hole.

[0012] In some embodiments of the present invention, the inner diameter of the first connecting section is larger than the diameter of the diversion hole.

[0013] In some embodiments of the present invention, the plate includes:

[0014] a first plate body, wherein a plurality of diversion holes are provided on the first plate body;

[0015] The second plate body is arranged on a side of the first plate body facing the first connecting section. The second plate body is provided with a plurality of the insertion holes. One end of the first connecting section is accommodated in the insertion hole and abuts against the first plate body.

[0016] In some embodiments of the present invention, the first connecting tube further includes a flexible portion, and along the extension direction of the first connecting tube, the length of the flexible portion is 10%-30% of the length of the first connecting tube.

[0017] In some embodiments of the present invention, the flexible portion is a copper member;

[0018] And / or, the flexible portion is provided 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.

[0019] In some embodiments of the present invention, the flow diversion assembly further includes a second connecting pipe, and the second connecting pipe includes:

[0020] an inlet pipe, one end of which is connected to the distributor and communicates with the plurality of diversion holes, and the other end of which is used for allowing the refrigerant to flow in;

[0021] An orifice plate is arranged inside the inlet pipe, and through holes are opened on the orifice plate. The number of the through holes is greater than or equal to the number of the diversion holes.

[0022] In some embodiments of the present invention, the diversion component further comprises:

[0023] A first adapter, 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.

[0024] In some embodiments of the present invention, one end of the first adapter is sleeved on the outside of the second connecting section and is fixedly connected to the second connecting section;

[0025] Alternatively, one end of the first adapter is inserted into the interior of the second connecting section and fixedly connected to the second connecting section.

[0026] The second aspect of the present invention further proposes a HVAC device, which includes a first heat exchanger and a diversion assembly as described in the present invention, wherein a first connecting pipe of the diversion assembly is connected to the first heat exchanger.

[0027] Compared with the prior art, the HVAC equipment proposed in the present invention has the technical advantages possessed by the above-mentioned diversion components, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0029] Figure 1 Schematically shows the structural diagram of the HVAC equipment according to the embodiment of the utility model

[0030] Figure 2 for Figure 1 The structural diagram of the diversion component shown in FIG;

[0031] Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the diversion assembly shown in ;

[0032] Figure 4 for Figure 1 Schematic diagram of connection between the diverter assembly and the first heat exchanger shown in ;

[0033] Figure 5 for Figure 4 A partial cross-sectional view of the flow diversion assembly shown in FIG. 1 being connected to the first heat exchanger;

[0034] Figure 6 for Figure 1 A partial cross-sectional view of another structure of a flow diversion component connected to a first heat exchanger shown in FIG.

[0035] The symbols in the accompanying drawings represent the following:

[0036] 1. HVAC equipment;

[0037] 1000, diversion assembly; 2000, first heat exchanger; 3000, second heat exchanger; 4000, compressor; 5000, refrigeration throttle valve; 6000, four-way valve;

[0038] 2001, Import;

[0039] 100. Distributor;

[0040] 200, first connecting pipe; 250, first connecting section; 260, second connecting section;

[0041] 300, second connecting pipe; 301, inlet pipe;

[0042] 10. Shell; 103. Expansion chamber;

[0043] 11. First insertion portion; 111. Inflow hole; 12. Mounting portion;

[0044] 20, plate body; 201, diversion hole; 202, insertion hole; 205, mounting hole;

[0045] 21. First plate; 22. Second plate;

[0046] 30. Diverter cone;

[0047] 60. First adapter;

[0048] 80. Orifice plate. DETAILED DESCRIPTION

[0049] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0050] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0051] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0052] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped over, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0053] like Figures 1-6As shown, the present invention proposes a diverter assembly 1000, which is used for a HVAC device 1. Specifically, the HVAC device 1 may include a compressor 4000, a valve structure, a first heat exchanger 2000, and a second heat exchanger 3000 that are connected to each other. The compressor 4000 is used to compress the refrigerant. The refrigerant compressed by the compressor 4000 can flow through the second heat exchanger 3000 and the first heat exchanger 2000 in sequence, and finally flow back to the compressor 4000. The valve structure includes a four-way valve 6000. The four-way valve 6000 has four connecting ports, two of which are connected to the output end and the input end of the compressor 4000 respectively, and the other two connecting 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 equipment 1 to switch between two functions: evaporator and condenser, i.e., heating mode and cooling mode. In this case, one of the first heat exchanger 2000 and the second heat exchanger 3000 is located outside the target space and functions as an outdoor unit, while the other is installed inside the target space and functions as an indoor unit. The outdoor and indoor units work together to form a circulation flow path, enabling the HVAC equipment 1 to cool, heat, dehumidify, and purify the air in the target space, thereby achieving a comfortable target space. The HVAC equipment 1 can have one outdoor unit and multiple indoor units, which are not specifically limited in this embodiment.

[0055] In this embodiment, HVAC equipment 1 is an air conditioner (in other embodiments of the present invention, HVAC equipment 1 includes but is not limited to a multi-split unit, a heat pump, a water heater, a swimming pool unit, etc.), first heat exchanger 2000 is an evaporator, and second heat exchanger 3000 is a refrigerator. First heat exchanger 2000 and second heat exchanger 3000 are connected by a flow diversion assembly 1000 to divert refrigerant from the gas / liquid collecting main pipe to multiple heat exchanger blocks. The valve structure also includes a refrigeration throttle valve 5000, which is arranged in communication between the flow diversion assembly 1000 and the second heat exchanger 3000.

[0056] In terms of overall design, Figures 2 to 4As shown, the flow diversion assembly includes a distributor 100 and a first connecting pipe 200. The distributor 100 has a plurality of diversion holes 201, each of which is connected to a corresponding first connecting pipe 200. The first connecting pipe 200 includes a first connecting section 250 and a second connecting section 260. The first connecting section 250 is used to connect to the first heat exchanger of the HVAC equipment, and the second connecting section 260 is connected to the distributor 100. The extension direction of the first connecting section 250 intersects the extension direction of the second connecting section 260. 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 within a range of 60%-95%.

[0057] Specifically, by limiting the rigidity of at least a portion of the first connecting tube 200, deformation of the first connecting tube 200 is reduced, helping to address the springback issue during welding of the connecting tube to the heat exchanger and facilitating automated welding of the heat exchanger and connecting piping. Furthermore, by limiting the flow direction of the first connecting section 250 to intersect with the flow direction of the second connecting section 260, the spacing between the distributor 100 and the first heat exchanger is reduced. Combined with the rigidity limitation of the first connecting tube 200, the connection between the distributor 100 and the first heat exchanger is further improved, thereby enhancing the performance of the flow diversion assembly.

[0058] It should be understood that, in this embodiment, the diversion assembly includes a distributor 100 and a first connecting pipe 200 and a second connecting piece. Among them, the distributor 100 has an inflow hole 111, an expansion cavity 103 and a plurality of diversion holes 201 arranged in sequence, and the inflow hole 111 is connected to the plurality of diversion holes 201 through the expansion cavity 103. The first connecting pipe 200 and the second connecting piece are respectively connected to the distributor 100, the first connecting pipe 200 is connected to the diversion hole 201, and the second connecting pipe 300 is connected to the inflow hole 111. Optionally, the expansion cavity 103 is hemispherical as a whole, the inflow hole 111 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, and the refrigerant can enter the expansion cavity 103 from the inflow hole 111 and flow to each diversion hole 201 through the expansion cavity 103. Such a setting helps to ensure that the refrigerant can flow evenly from the inflow hole 111 to each diversion hole 201.

[0059] In this embodiment, at least a portion of the first connecting tube 200 is rigid. At the same time, the first connecting tube 200 has a first connecting section 250, a second connecting section 260 and a bending section, wherein the first connecting section 250 and the second connecting section 260 are both straight sections, and the bending section is connected and arranged 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 chamber 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 with 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 limiting the structure of the first connecting pipe 200 and the material of the first connecting pipe 200, on the one hand, the first connecting pipe 200 can be made less likely to deform. On the other hand, it can be laid out 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. Such a setting helps to solve the rebound problem during welding of the connecting pipe and the heat exchanger, and realizes the automated welding of the heat exchanger and the connecting pipeline.

[0060] It should be noted that at least a portion of the first connecting pipe 200 is rigid, where rigidity refers to resistance to deformation. Optionally, the first connecting pipe 200 is entirely made of a relatively rigid material, such as stainless steel or carbon steel. In this case, the first connecting pipe 200 is not easily deformed and can effectively solve the problem of springback when welding the connecting pipe to the heat exchanger. Optionally, at least a portion of the first connecting pipe 200 is made of a relatively rigid material. In this case, the first connecting pipe 200 can also effectively solve the problem of springback when welding the connecting pipe to the heat exchanger.

[0061] In addition, the first connecting pipe 200 can be bent and formed using existing equipment to form a desired shape. In this embodiment, each first connecting pipe 200 of the diverter assembly extends along a single path. When the distributor 100 is connected to the first heat exchanger, the multiple first connecting pipes 200 are spaced apart.

[0062] Furthermore, the distributor 100 includes a plate body 20, which is provided with multiple diversion holes 201, and an insertion hole 202 is provided on the side of the plate body 20 facing the first connecting pipe 200. Each insertion hole 202 is connected to a corresponding diversion hole 201, and the first connecting section 250 is adapted to be connected to the insertion hole 202.

[0063] Specifically, by providing a plate body 20 with a diversion hole 201, it can be used in conjunction with the expansion cavity 103 to achieve synchronous output after the refrigerant is diverted. At the same time, an insertion hole 202 is provided on the plate body 20, and it can be adapted and connected with the first connecting pipe 200. On the one hand, it can provide positioning for the subsequent welding process 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 arranged, which helps to ensure the transmission effect of the refrigerant.

[0064] It is important to understand that if Figure 3 As shown, the distributor 100 includes a shell 10 and a plate body 20, wherein the shell 10 is a semi-spherical structure, and the interior of the shell 10 defines a diverter chamber. In this embodiment, the diverter chamber includes an expansion chamber 103 and a mounting chamber, and an inflow hole 111 and a mounting chamber are respectively provided at both ends of the expansion chamber 103. From the direction of the inflow hole 111 facing the mounting chamber, that is, the flow direction of the refrigerant, the inner diameter of the expansion chamber 103 gradually increases. At this time, the minimum inner diameter of the expansion chamber 103 is the same as the aperture of the inflow hole 111, and the maximum inner diameter of the expansion chamber 103 is the same as the aperture of the mounting chamber. The mounting chamber is connected to the outside and forms an opening of the diverter chamber. The refrigerant entering the expansion chamber 103 from the inflow hole 111 changes the flow direction of the refrigerant due to the change in the flow space. On the one hand, the refrigerant can be mixed in the expansion chamber 103, thereby improving the mixing effect. On the other hand, the change in the aperture of the expansion cavity 103 can guide the flow of the refrigerant, and further cooperate with the diversion hole 201 to ensure that the refrigerant flows to the diversion hole 201 evenly and quickly.

[0065] It should be noted that in this embodiment, the housing 10 includes a main body (not shown) and a mounting portion 12. The main body defines an expansion chamber 103 for diverting and mixing the refrigerant. The mounting portion 12 is located on one side of the main body and is used to mount the plate 20 or other components. The mounting portion 12 defines a mounting chamber with an aperture that is the same as the maximum inner diameter of the expansion chamber 103.

[0066] like Figure 3As shown, in this embodiment, the plate body 20 is a circular plate-shaped structure, and the plate body 20 is suitable for being set in the installation cavity, and at this time, the plate body 20 and the inflow hole 111 are suitable for being set on opposite sides of the expansion cavity 103, and the axis of the plate body 20 and the axis of the inflow hole 111 are located in the same straight line. At the same time, a plurality of diversion holes 201 are provided on the plate body 20, and the plurality of diversion holes 201 are arranged around the axis of the plate body 20 as the center, and each diversion hole 201 is connected to a corresponding first connecting pipe 200, so as to play a role in regulating flow distribution, and the diversion hole 201 is concentrically arranged with the first connecting pipe 200. By limiting the axis of the plate body 20 and the axis of the inflow hole 111 to be located in the same straight line, and cooperating with the structure of the expansion cavity 103, it can be further ensured that the refrigerant can flow evenly to each diversion hole 201, and the sameness of the refrigerant is guaranteed in achieving the effect of refrigerant diversion.

[0067] It is necessary to further understand that Figure 3 As shown, the plate body 20 includes a first plate body 21 and a second plate body 22. Among them, a plurality of diversion holes 201 are provided on the first plate body 21. The second plate body 22 is arranged on one side of the first plate body 21, and a plurality of insertion holes 202 are provided on the second plate body 22. The first plate body 21 and the second plate body 22 cooperate to form a countersunk structure. The first connecting section 250 is accommodated in the insertion hole 202 and abuts against the first plate body 21, that is, the first connecting section 250 is inserted into the countersunk structure. At this time, the first connecting section 250 can be welded to the second plate body 22, and the connection between the peripheral wall of the first connecting tube 200 and the hole wall of the insertion hole 202 is coordinated to help expand the connection area between the first connecting tube 200 and the plate body 20, thereby improving the reliability of the connection.

[0068] In this embodiment, the diameter of the insertion hole 202 is 3 mm to 6 mm, and the outer diameter of the first connecting tube 200 is the same as the diameter of the insertion hole 202. This configuration effectively ensures a sealed connection between the first connecting tube 200 and the insertion hole 202. Furthermore, the first connecting tube 200 has a first wall thickness of 0.3 mm to 1.5 mm. By limiting the wall thickness of the first connecting tube 200, the rigidity of the first connecting tube 200 and the delivery efficiency of the first connecting tube 200 can be further guaranteed.

[0069] Furthermore, the aperture of the diverter hole 201 is smaller than the inner diameter of the first connecting tube 200. By limiting the aperture of the diverter hole 201 to be smaller than the inner diameter of the first connecting tube 200, the refrigerant can change its flow direction due to the increase in flow space after entering the first connecting tube 200, thereby helping to improve the mixing effect of the refrigerant. Optionally, the aperture of the diverter hole 201 is 0.4 to 0.8 times the inner diameter of the first connecting tube 200. Optionally, the aperture of the diverter hole 201 is 0.5 times the inner diameter of the first connecting tube 200. And because the diverter hole 201 is concentrically arranged with the first connecting tube 200, the flow of the refrigerant can be made more uniform, and a better mixing effect can be ensured.

[0070] Furthermore, the first connecting pipe 200 has a flexible portion, and the length of the flexible portion is 10%-30% of the length of the first connecting pipe 200 .

[0071] Specifically, by limiting the first connecting tube 200 to have a flexible portion, the first connecting tube 200 can be partially flexible, so that the position of the second connecting section 260, that is, the insertion position of the first connecting tube 200, can be slightly adjusted, which helps to improve the applicability of the first connecting tube 200, thereby avoiding the situation where the first connecting tube 200 cannot be inserted into the first heat exchanger.

[0072] 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 to the distributor 100 and the first heat exchanger, thereby ensuring welding of the first connecting pipe 200 to the distributor 100 or the first heat exchanger. The flexible portion is used to adjust the relative position of the first connecting section 250 and the second connecting section 260, thereby ensuring a better fit and connection with the distributor 100 or the first heat exchanger.

[0073] It should be noted that due to cumulative tolerances, all first connecting tubes 200 are made of a relatively rigid material, which can easily prevent the first connecting tube 200 from being inserted into the first heat exchanger. By limiting the proportion of the flexible portion on the first connecting tube 200, the first connecting tube 200 is given a certain degree of flexibility, allowing for slight adjustments to the insertion position. Furthermore, the rigidity of the first connecting tube 200 is ensured, preventing springback when welded to the first heat exchanger.

[0074] It should be further understood that the flexible portion is a less rigid portion and is therefore more susceptible to deformation than the rigid portion. In this embodiment, the flexible portion is made of copper or another material. Optionally, the flexible portion is a copper member. Furthermore, the flexible portion can be disposed between the first connecting section 250 and the second connecting section 260, i.e., all or part of the bending section can be disposed in a copper member. Alternatively, the flexible portion can be disposed 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 can be a flexible portion. The following description uses the second connecting section 260 as an example. The second connecting section 260 can be entirely copper, or the portion connecting the second connecting section 260 and the bending section can be copper, or the plug-in connection between the second connecting section 260 and the first heat exchanger can be copper, so as to enable plug-in connection with 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.

[0075] Furthermore, the diverter assembly further includes a first adapter 60 , one end of the first adapter 60 is connected to the second connecting section 260 , and the other end of the first adapter 60 is used to be inserted into the inlet 2001 of the first heat exchanger.

[0076] Specifically, the provision of the first adapter 60 can improve the connection performance of the first connecting tube 200 while ensuring the rigidity of the first connecting tube 200. The provision of the first adapter 60 helps reduce the possibility of the first connecting tube 200 being unable to be inserted into the first heat exchanger. Furthermore, it allows the first connecting tube 200 to be compatible with inlets 2001 of first heat exchangers of different sizes, thereby improving the applicability of the flow splitter assembly and further improving the connection method between the first connecting tube 200 and the inlet 2001.

[0077] It should be understood that in this embodiment, the inlet 2001 of the first heat exchanger is secured to the first connecting pipe 200 by welding. However, if the inlet 2001 of the first heat exchanger and the first connecting pipe 200 are made of different materials, such as if the first connecting pipe 200 is a stainless steel pipe and 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 first adapter 60 is made of the same material as the inlet 2001 of the first heat exchanger, thereby improving the connection between the diverter assembly and the first heat exchanger.

[0078] It should be further understood that the first heat exchanger is connected to the first adapter 60, and the connection methods include but are not limited to plugging, screwing, welding, clamping, bonding, etc. Figure 5As shown, in some embodiments of the present application, one end of the first adapter 60 is inserted into the interior of the second connecting section 260 and is fixedly connected to the second connecting section 260. In this case, the fixed connection refers to the end surface of the second connecting section 260 facing the first adapter 60 being welded to the circumference 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). In this case, the diameter and wall thickness of the first adapter 60 can be the same as or different from those of the connecting pipe.

[0079] like Figure 6 As shown, in some other embodiments of the present application, one end of the first adapter 60 is sleeved outside the second connecting section 260 and fixedly connected to the second connecting section 260. In this case, the end surface of the first adapter 60 facing the second connecting section 260 is welded to the circumference of the second connecting section 260. The actual process can refer to the above operation.

[0080] Furthermore, the flow diversion assembly 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 the plurality of diversion holes 201. The other end of the inlet pipe 301 is used to allow the refrigerant to flow in. The orifice plate 80 is provided with through holes, the number of which is greater than or equal to the number of diversion holes 201.

[0081] Specifically, by providing the inlet pipe 301 and the orifice plate 80 , preliminary diversion and mixing can be performed before the refrigerant enters the distributor 100 , which helps cooperate with the diversion cone 30 described below and can further improve the mixing effect of the refrigerant.

[0082] It should be further understood that, in this embodiment, the bottom of the distributor 100 is convex outward and forms a first inserting portion 11, the interior of the first inserting portion 11 defines an inflow hole 111, and the inlet pipe 301 is inserted into the interior of the first inserting portion 11. Figure 3 As shown, the inlet pipe 301 cooperates with the housing 10 to form a Venturi tube structure, which increases the flow velocity by reducing the flow area, thereby generating a low-pressure area at the throat. The change in refrigerant flow velocity helps further improve the refrigerant mixing effect and increases the flow rate of the refrigerant to each diverter hole 201, thereby ensuring the diverter effect of the diverter assembly 1000.

[0083] In this embodiment, the inlet pipe 301 includes an incident cavity (not shown in the figure) and a connecting cavity (not shown in the figure). The incident cavity is used for the inflow of refrigerant, and the connecting cavity is arranged inside the first plug-in portion 11 to further reduce the flow area of ​​the inflow hole 111. After flowing through the incident cavity, the refrigerant enters the expansion cavity 103 through the connecting cavity. At this time, the orifice plate 80 is suitable for being arranged inside the incident cavity. The number of through holes is the same as the number of diversion holes 201, which can effectively ensure the mixing effect of the refrigerant after flowing through the through holes. At the same time, it can also cooperate with the diversion hole 201 to ensure the flow effect of the refrigerant.

[0084] It should be noted that, in addition to providing the orifice plate 80 inside the inlet pipe 301 , a filter structure or a threaded pipe can also be provided to enhance the mixing effect of the refrigerant when it enters the distributor 100 .

[0085] Furthermore, the diverter assembly 1000 also includes a diverter cone 30 , which is disposed on the plate body 20 . The axis of the diverter cone 30 is co-linear with the axis of the inflow hole 111 . The diverter cone 30 is used to guide the fluid from the inflow hole 111 to the diverter hole 201 .

[0086] Specifically, by providing the diverter cone 30, a diversion surface can be formed in the expansion chamber 103, thereby evenly distributing the refrigerant to each diverter hole 201, thereby ensuring the diversion effect of the diverter assembly 1000. At the same time, the provision of the diverter cone 30 can also cooperate with the structure of the expansion chamber 103, thereby further improving the diversion effect of the distributor 100.

[0087] It should be understood that a diverter cone 30 is provided on the plate body 20, and the cone line of the diverter cone 30 is located in the same straight line as the axis of the inflow hole 111, and at this time, a plurality of diverter holes 201 are arranged around the axis of the inflow hole 111 and are spaced apart from the diverter cone 30. In this embodiment, the diverter cone 30 has a small diameter end and a large diameter end, wherein the large diameter end is connected to the plate body 20. Optionally, the small diameter end is provided in the expansion cavity 103 and is provided corresponding to the inflow hole 111. At this time, the refrigerant entering the expansion cavity 103 from the inflow hole 111 will impact the small diameter end of the diverter cone 30, and under the action of the cone surface of the diverter cone 30, it will flow to each diverter hole 201, which helps to ensure the uniformity and rapidity of the refrigerant flow.

[0088] It should be pointed out that, in addition to setting the small-diameter end in the expansion chamber 103, the small-diameter end can also be set on the side away from the expansion chamber 103, that is, the small-diameter end is set inside the installation chamber. In this case, the internal hollowing setting of the diverter cone 30 forms a conical guide space. The refrigerant entering the expansion chamber 103 from the inflow hole 111 will impact the small-diameter end of the diverter cone 30, and under the action of the conical surface of the diverter cone 30, it will flow to each diverter hole 201. Since the inflow hole 111 and the small-diameter end are located on the same straight line, the guide space is on the same horizontal plane, and the pressure at each location is the same or similar, which helps to ensure the uniformity of the refrigerant flow.

[0089] It needs to be further understood that the diverter cone 30 and the plate body 20 are split structures. Specifically, a avoidance hole is provided in the middle of the first plate body 21, and a mounting hole 205 is provided in the middle of the second plate body 22. Among them, the diverter cone 30 includes a cone, an extension section and a flange. From the direction of the inflow hole 111 toward the plate body 20, the cone, the extension section and the flange are connected in sequence. Among them, the extension section is adapted to the inner wall of the avoidance hole. Optionally, the cone is arranged inside the expansion cavity 103, the flange is adapted to the inner wall of the mounting hole 205, and the flange is fitted and connected to the side of the plate body 20 facing away from the expansion cavity 103. By providing the extension section so that it can be connected in conjunction with the avoidance hole, it is helpful to achieve a sealed connection between the plate body 20 and the diverter cone 30. At the same time, the setting of the flange, on the one hand, helps to further improve the sealing effect between the plate body 20 and the diverter cone 30; on the other hand, it can also increase the welding area between the diverter cone 30 and the plate body 20, which helps to further improve the connection effect between the diverter cone 30 and the plate body 20.

[0090] It should be noted that in some other embodiments of the present application, the diverter cone 30 and the plate body 20 are integrally formed. This integrally formed part helps reduce the manufacturing and assembly difficulty of the distributor 100. Optionally, the internal hollowing of the diverter cone 30 helps reduce the manufacturing cost of the distributor 100 while ensuring the diverter cone 30's effective flow diversion.

[0091] In addition, the small diameter end of the cone is located in the expansion cavity 103 and is spaced apart from the inflow hole 111, which helps to ensure the diversion effect of the diverter cone 30. At the same time, the diverter cone 30 can be set to different structures such as a cone, a triangular pyramid, a square pyramid, a pentagonal pyramid, etc. to adapt to the number of diverter holes 201 and ensure the diversion effect.

[0092] The second aspect of the present invention further proposes a HVAC device 1, which includes a first heat exchanger 2000 and the above-mentioned diversion component 1000, wherein the first connecting pipe 200 of the diversion component 1000 is connected to the first heat exchanger 2000.

[0093] Compared with the prior art, the HVAC equipment 1 proposed in the present invention has the technical advantages possessed by the above-mentioned diversion component 1000, which will not be described in detail here.

[0094] 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 changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A diversion component for HVAC equipment, characterized in that: include: a distributor having a plurality of diversion holes; a first connecting pipe, wherein the distributor is connected to a plurality of the 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 with the extension direction of the second connecting section. The first connecting pipe includes a rigid part. Along the extension direction of the first connecting pipe, the ratio of the length of the rigid part to the length of the first connecting pipe is in the range of 60%-95%.

2. The flow diversion assembly according to claim 1, characterized in that: The first connecting pipe has a first wall thickness, and the first wall thickness is in the range of 0.3 mm to 1.5 mm.

3. The flow diversion assembly according to claim 1, characterized in that: The distributor includes a plate body, a plurality of diversion holes are provided on the plate body, an insertion hole is provided on the side of the plate body facing the first connecting pipe, each insertion hole is connected to a corresponding diversion hole, and the first connecting section is adapted to be connected to the insertion hole.

4. The flow diversion assembly 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 flow diversion assembly according to claim 3, characterized in that: The plate body comprises: a first plate body, wherein a plurality of diversion holes are provided on the first plate body; The second plate body is arranged on a side of the first plate body facing the first connecting section. The second plate body is provided with a plurality of the insertion holes. One end of the first connecting section is accommodated in the insertion hole and abuts against the first plate body.

6. The flow diversion assembly according to claim 1, characterized in that: The first connecting tube further includes a flexible portion. Along the extending direction of the first connecting tube, the length of the flexible portion is 10%-30% of the length of the first connecting tube.

7. The flow diversion assembly according to claim 6, characterized in that: The flexible part is a copper part; And / or, the flexible portion is provided 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 flow diversion assembly according to claim 1, characterized in that: The flow diversion assembly further includes a second connecting pipe, which includes: an inlet pipe, one end of which is connected to the distributor and communicates with the plurality of diversion holes, and the other end of which is used for allowing the refrigerant to flow in; An orifice plate is arranged inside the inlet pipe, and through holes are opened on the orifice plate. The number of the through holes is greater than or equal to the number of the diversion holes.

9. The flow diversion assembly according to any one of claims 1 to 8, characterized in that: The diversion component also includes: A first adapter, 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 flow diversion assembly according to claim 9, characterized in that: One end of the first adapter is sleeved on the outside of the second connecting section and is fixedly connected to the second connecting section; Alternatively, one end of the first adapter is inserted into the interior of the second connecting section and fixedly connected to the second connecting section.

11. A heating and ventilation equipment, characterized in that: The HVAC equipment includes a first heat exchanger and a diversion assembly according to any one of claims 1 to 10, wherein a first connecting pipe of the diversion assembly is connected to the first heat exchanger.

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