Collecting pipe assembly and heat exchanger with collecting pipe assembly

Abstract

The utility model provides a header pipe assembly and a heat exchanger with the header pipe assembly, the header pipe assembly comprises a header pipe body and a shunting piece; the collecting pipe body is provided with a collecting cavity; the flow dividing piece comprises a plurality of first flow dividing pipes and a plurality of second flow dividing pipes, the first flow dividing pipes and the second flow dividing pipes are sequentially distributed in the axial direction of the flow collecting pipe body at intervals, and the first ends of the first flow dividing pipes and the first ends of the second flow dividing pipes communicate with the flow collecting cavity. The second ends of the first flow dividing pipe and the second flow dividing pipe are used for guiding the refrigerant into the flat pipe; the diameter of the first flow dividing pipes is smaller than that of the second flow dividing pipes, and refrigerants are sequentially divided into the multiple first flow dividing pipes and the multiple second flow dividing pipes in the axial direction of the flow collecting pipe body. According to the flow collecting pipe, the local resistance of a refrigerant flowing into a flow dividing area in the flow collecting pipe body is changed through the arrangement of different flow dividing pipe apertures, so that the refrigerant flows in more uniformly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger technical field, concretely relates to a manifold assembly and the heat exchanger with the manifold assembly. BACKGROUND

[0002] The prior art microchannel heat exchanger, a plurality of parallel heat exchange flat tubes are connected to two parallel distribution manifolds, and the working medium flows in the heat exchanger, so that the working medium in the tube and the fluid outside the tube are efficiently heat exchanged, and the fin structure is arranged between the parallel flat tubes to further improve the heat exchange efficiency. However, when the gas-liquid two-phase refrigerant passes through the microchannel heat exchanger, the two-phase refrigerant entering the microchannel heat exchanger has the phenomenon of uneven liquid separation due to the influence of gravity and pipeline resistance. More refrigerant flows through the lower part of the heat exchanger, and "excessive liquid supply" reduces the heat exchange efficiency of the heat exchanger and causes the compressor to suck liquid, affecting the service life of the compressor. Less refrigerant flows through the upper part of the heat exchanger, causing "dry steam" phenomenon, and the heat exchange capacity of the heat exchanger cannot be fully utilized. Therefore, the current microchannel heat exchanger flow distribution problem is a difficult problem restricting its large-scale application.

[0003] At present, in the process of solving the flow distribution of the microchannel heat exchanger, the manifold structure is mostly optimized, the flow distribution is made uniform by increasing the flow distribution structure, and the refrigerant flow entering the heat exchanger is made uniform by designing the flow distributor structure. However, these methods still have the following problems: 1. Most of the flow distribution structures are complex in design and difficult to process, increasing the production cost of the heat exchanger; 2. The manifold is generally vertically placed and has a long size, and the flow of the refrigerant in the manifold is greatly affected by gravity, so that the flow distribution effect of the flow distribution structure is not significant.

[0004] The related technology discloses a flow uniform distribution seal head which can make the fluid entering the seal head be distributed for multiple times, and improves the uniformity of the fluid flow in the heat exchanger, but does not reduce the influence of gravity on the flow distribution. The related technology discloses a refrigerant distributor which makes the refrigerant flow entering the heat exchanger uniform by arranging a plurality of branch pipes in the distributor, but the structure of the distributor is complex. UTILITY MODEL CONTENTS

[0005] The utility model provides a manifold assembly and the heat exchanger with the manifold assembly, which can solve the technical problem that the existing manifold structure cannot reduce the influence of gravity on the flow distribution.

[0006] The utility model provides a manifold assembly, which comprises a manifold body and a flow distribution member.

[0007] The manifold body has a manifold cavity.

[0008] The flow distributor comprises a plurality of first flow distributors and a plurality of second flow distributors, the plurality of first flow distributors and the plurality of second flow distributors are sequentially and spacedly arranged along the axial direction of the header body, the first ends of the first flow distributors and the second flow distributors are communicated with the header cavity, and the second ends of the first flow distributors and the second flow distributors are used for guiding the refrigerant into the flat tubes.

[0009] The diameter of the first flow distributor is smaller than the diameter of the second flow distributor, and along the axial direction of the header body, the refrigerant is sequentially distributed into the plurality of first flow distributors and the plurality of second flow distributors.

[0010] In some embodiments, a plurality of third flow distributors are arranged between the plurality of first flow distributors and the plurality of second flow distributors, the first ends of the third flow distributors are communicated with the header cavity, and the second ends of the third flow distributors are used for guiding the refrigerant into the flat tubes.

[0011] In some embodiments, along the axial direction of the header body, the diameters of the first flow distributors, the third flow distributors and the second flow distributors sequentially increase, and the diameter ratio of adjacent flow distributors is between 1.1 and 1.3.

[0012] In some embodiments, the header assembly further comprises a flow guide pipe, the axial extension direction of the flow guide pipe is the same as that of the header body, the first ends of the first flow distributors and the second flow distributors are connected with the header body, the second ends of the first flow distributors and the second flow distributors are connected with the flow guide pipe, and the flow guide pipe is used for guiding the refrigerant into the flat tubes.

[0013] In some embodiments, a plurality of flow guides are arranged in the flow guide pipe, the plurality of flow guides are spacedly arranged along the axial direction of the flow guide pipe, and flow channels are formed between adjacent flow guides.

[0014] In some embodiments, with the cross section of the flow guide pipe as a projection plane, the flow guides are obliquely arranged, and the bottom ends of the flow guides extend towards the flow distributor.

[0015] In some embodiments, with the cross section of the flow guide pipe as a projection plane, the extension line of the top end of the flow guide in the horizontal direction is a first horizontal line, the wall surface of the flow guide towards the flow distributor has an included angle α with the first horizontal line, and the included angle α is 45°-60°.

[0016] In some embodiments, the flow guide pipe has a flow guide cavity, at least one partition plate is further arranged in the flow guide pipe, the partition plate divides the flow guide cavity into a first flow guide cavity and a second flow guide cavity, and a plurality of flow guides are arranged in the first flow guide cavity and the second flow guide cavity, respectively.

[0017] In some embodiments, the flow guide pipe is provided with a first mounting plate towards the side wall of the flow divider, the first mounting plate has at least a first panel area and a second panel area, a plurality of first flow guide holes, second flow guide holes and third flow guide holes are arranged on the first panel area and the second panel area, the first flow guide holes, the second flow guide holes and the third flow guide holes are sequentially arranged from bottom to top with the end face of the first mounting plate as a projection face, the width of the first flow guide holes, the second flow guide holes and the third flow guide holes gradually increases, and the first flow guide holes, the second flow guide holes and the third flow guide holes are in communication with the corresponding flow guide channels.

[0018] In some embodiments, the flow guide pipe is provided with a second mounting plate away from the side wall of the flow divider, the second mounting plate is provided with a plurality of spaced mounting channels, the mounting channels include mounting holes and limiting holes in communication with each other, the limiting hole away from the one end of the mounting hole is in communication with the flow guide channel, and the mounting hole is used for mounting the flat tube; with the cross section of the second mounting plate as a projection face, the axial height of the mounting hole is greater than the axial height of the limiting hole.

[0019] A heat exchanger comprises a header assembly and a plurality of micro-channel flat tubes, the header assembly is the header assembly described above, and the plurality of micro-channel flat tubes are sequentially and spacedly arranged along the axial direction of the header body.

[0020] The heat exchanger with the header assembly has the following beneficial effects:

[0021] The diameter of the first flow divider is smaller than that of the second flow divider, and the amount of refrigerant entering the first flow divider can be reduced due to the different diameters of the pipes. Considering the influence of gravity, the amount of refrigerant flowing into the second flow divider can be increased by increasing the diameter of the second flow divider. Especially in the vertically placed header, the refrigerant can be more evenly distributed to each flow divider. Moreover, by setting different flow divider hole diameters, the local resistance of the refrigerant flowing into the flow division area in the header body is changed, so that the refrigerant flows more evenly. The first flow divider and the second flow divider are sequentially and spacedly arranged along the axial direction of the header body, which helps to evenly distribute the refrigerant before entering the flat tube. By such spaced distribution, the uneven distribution of refrigerant caused by gravity and other factors can be reduced, thereby improving the heat exchange efficiency. The arrangement of the first flow divider and the second flow divider enables the refrigerant to flow more evenly into the flat tube for heat exchange, which can improve the heat exchange efficiency of the heat exchanger and avoid the reduction of heat exchange efficiency caused by "excessive liquid supply" or "dry steam" phenomenon. The diameter and distribution of the first flow divider and the second flow divider are optimized in the embodiment, so that the flow resistance can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the manifold assembly according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the manifold body according to an embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional schematic diagram of the first to third branch pipes according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the guide tube according to an embodiment of the present utility model;

[0027] Figure 5 This is a cross-sectional schematic diagram of the guide tube according to an embodiment of the present utility model;

[0028] Figure 6 This is a cross-sectional schematic diagram of the first manifold body, the diverter, and the guide pipe according to an embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of the second mounting plate according to an embodiment of the present utility model;

[0030] Figure 8 This is a schematic diagram of the first mounting plate according to an embodiment of the present utility model;

[0031] Figure 9 This is a cross-sectional schematic diagram of the guide pipe when a first mounting plate and a second mounting plate are provided in an embodiment of the present invention.

[0032] Attached Figures: 1-Collector's main body; 101-Collector's cavity; 2-Diverter; 201-First diverter; 202-Second diverter; 203-Third diverter; 3-Guide pipe; 301-Guide component; 302-Guide channel; 303-Separator plate; 341-First guide cavity; 342-Second guide cavity; 4-First mounting plate; 41-First panel area; 42-Second panel area; 401-First guide hole; 402-Second guide hole; 403-Third guide hole; 5-Second mounting plate; 501-Mounting channel; 511-Mounting hole; 512-Limiting hole; 6-Flat tube; 7-Second collector. Detailed Implementation

[0033] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the present application and its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0035] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0036] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0037] For reference Figure 1 and Figure 2As shown, according to the embodiment of the utility model, provide a manifold assembly, it includes manifold body 1 and shunt 2, manifold body 1 has manifold cavity 101, shunt 2 includes multiple first shunt pipe 201 and multiple second shunt pipe 202, multiple first shunt pipe 201 and multiple second shunt pipe 202 are sequentially spaced along the axial direction of manifold body 1, the first end of first shunt pipe 201 and second shunt pipe 202 all are communicated with manifold cavity 101, the second end of first shunt pipe 201 and second shunt pipe 202 is used to guide flow to flat tube 6 in refrigerant, the diameter of first shunt pipe 201 is less than the diameter of second shunt pipe 202, and along the axial direction of manifold body 1, refrigerant is sequentially shunted to multiple first shunt pipe 201 and multiple second shunt pipe 202.

[0038] Specifically, manifold body 1 is provided with refrigerant inlet pipe, after refrigerant flows into manifold cavity 101 from below to above, Figure 1 The orientation is accurate, second shunt pipe 202 is arranged above first shunt pipe 201, that is, refrigerant is sequentially shunted to first shunt pipe 201 and second shunt pipe 202 from below to above, and the refrigerant shunted into each shunt pipe flows into flat tube 6 from the second end for heat exchange.

[0039] In the embodiment, the diameter of first shunt pipe 201 is less than the diameter of second shunt pipe 202, due to the different pipe diameters, the amount of refrigerant entering first shunt pipe 201 can be reduced, considering the influence of gravity, by increasing the diameter of second shunt pipe 202, the amount of refrigerant flowing into second shunt pipe 202 can be increased, especially in the vertically placed manifold, the refrigerant can be more evenly distributed to each shunt pipe, and by setting different shunt pipe apertures, the local resistance of refrigerant flowing into the shunt area in manifold body 1 is changed, so that the refrigerant flows more evenly. First shunt pipe 201 and second shunt pipe 202 are sequentially spaced along the axial direction of manifold body 1, which helps to evenly distribute the refrigerant before entering flat tube 6, and by such spaced distribution, the uneven distribution of refrigerant due to gravity and other factors can be reduced, thereby improving the heat exchange efficiency. The arrangement of first shunt pipe 201 and second shunt pipe 202 enables the refrigerant to flow more evenly into flat tube 6 for heat exchange, which can improve the heat exchange efficiency of the heat exchanger and avoid the reduction of heat exchange efficiency due to "excessive liquid supply" or "dry steam" phenomenon. By optimizing the diameter and distribution of first shunt pipe 201 and second shunt pipe 202, the flow resistance can be reduced.

[0040] For reference Figures 1 to 3As shown, a plurality of third shunt pipes 203 are arranged between the plurality of first shunt pipes 201 and the plurality of second shunt pipes 202, the first end of the third shunt pipe 203 is in communication with the collecting cavity 101, and the second end of the third shunt pipe 203 is used to guide the refrigerant into the flat tube 6.

[0041] In the present embodiment, the refrigerant is sequentially shunted into the first shunt pipe 201 and the third shunt pipe 203 and the second shunt pipe 202, by arranging a plurality of third shunt pipes 203 between the first shunt pipe 201 and the second shunt pipe 202, the arrangement of the third shunt pipe 203 can make the refrigerant evenly distributed in different third cavities, which can further improve the distribution of the refrigerant inside the heat exchanger. This arrangement helps to ensure that the refrigerant can be more evenly distributed to each shunt pipe, thereby improving the heat exchange efficiency.

[0042] For reference Figures 1 to 3 As shown, along the axial direction of the collecting pipe body 1, the diameters of the first shunt pipe 201, the third shunt pipe 203 and the second shunt pipe 202 increase in turn, and the pipe diameter ratio of adjacent shunt pipes is between 1.1-1.3.

[0043] In the present embodiment, specifically, by gradually increasing the diameter of the shunt pipe, the flow resistance of the fluid can be gradually reduced, the flow resistance of the smaller diameter first shunt pipe 201 is larger, and the larger diameter second shunt pipe 202 helps to reduce the pressure drop and improve the flow performance of the fluid. The pipe diameter ratio between adjacent shunt pipes is between 1.1-1.3, and the gradual change of the diameters of the first shunt pipe 201, the third shunt pipe 203 and the second shunt pipe 202 helps to more evenly distribute the refrigerant flow, which can reduce the problem of reduced heat exchange efficiency caused by uneven flow distribution. In addition, in the micro-channel heat exchanger, different flow and heat exchange requirements may require different fluid dynamics and thermodynamics characteristics. By adjusting the diameter of the shunt pipe, different requirements can be met, and the overall heat exchange performance can be optimized.

[0044] For reference Figures 1 to 6 As shown, the flow guide pipe 3 assembly further includes a flow guide pipe 3, the axial extension direction of the flow guide pipe 3 and the collecting pipe body 1 is the same, the first end of the first shunt pipe 201 and the second shunt pipe 202 is connected with the collecting pipe body 1, the second end of the first shunt pipe 201 and the second shunt pipe 202 is connected with the flow guide pipe 3, and the flow guide pipe 3 is used to guide the refrigerant into the flat tube 6.

[0045] Specifically, when the refrigerant flows into the collecting cavity 101 from bottom to top, the refrigerant is sequentially shunted into the first shunt pipe 201 and the second shunt pipe 202 from bottom to top, the refrigerant shunted into each shunt pipe flows into the flow guide pipe 3 from the second end, and the flow guide pipe 3 guides the refrigerant into the flat tube 6.

[0046] In the embodiment, the use of the flow guide pipe 3 in cooperation with the manifold body 1 and the flow distribution pipes can more evenly distribute the refrigerant into the respective flat tubes 6, which helps to reduce the problem of reduced heat exchange efficiency caused by uneven distribution of the refrigerant. The refrigerant is guided from the flow distribution pipes into the flat tubes 6 by the flow guide pipe 3, which can ensure smoother and more uniform flow of the refrigerant in the heat exchanger, thereby improving the overall heat exchange efficiency.

[0047] As a specific implementation, when a plurality of third flow distribution pipes 203 are arranged between the plurality of first flow distribution pipes 201 and the plurality of second flow distribution pipes 202, the first end of the third flow distribution pipe 203 is in communication with the flow collection cavity 101, and the diameters of the first flow distribution pipe 201, the third flow distribution pipe 203, and the second flow distribution pipe 202 increase in the axial direction of the manifold body 1, that is, in the axial direction of the flow guide pipe 3, three flow distribution pipes with different diameters are arranged.

[0048] For reference Figures 1 to 6 As shown in the figure, a plurality of flow guide members 301 are arranged in the flow guide pipe 3, and the plurality of flow guide members 301 are spaced apart in the axial direction of the flow guide pipe 3, and the flow guide channels 302 are formed between adjacent flow guide members 301.

[0049] Specifically, when the refrigerant flows into the flow collection cavity 101 from bottom to top, the refrigerant is sequentially distributed into the first flow distribution pipe 201 and the second flow distribution pipe 202 from bottom to top, and the refrigerant distributed into each flow distribution pipe flows into the flow guide pipe 3 from the second end. The refrigerant flowing into the flow guide pipe 3 will flow into the flat tube 6 along the flow guide channel 302.

[0050] In the embodiment, by arranging a plurality of flow guide members 301 and flow guide channels 302, the refrigerant can be more evenly distributed into the respective flat tubes 6, which helps to reduce the problem of reduced heat exchange efficiency caused by uneven distribution of the refrigerant. Moreover, the arrangement of the flow guide member 301 can change the flow direction of the refrigerant when it flows into the flow guide channel 302, which helps to more evenly distribute the gas-liquid two-phase refrigerant into the respective flat tubes 6. In addition, the arrangement of the flow guide member 301 can reduce the influence of factors such as inertial force of gas-liquid two-phase flow, branch length of the heat exchanger, and gravity on the distribution performance to some extent, thereby improving the uniformity and stability of the distribution.

[0051] For reference Figures 1 to 6 As shown in the figure, the flow guide member 301 is arranged obliquely, and the bottom end of the flow guide member 301 extends towards the flow distribution member 2, with the cross section of the flow guide pipe 3 as the projection plane.

[0052] In the embodiment, the top end of the flow guide 301 extends to the flat tube 6, and when the refrigerant flowing into the flow guide pipe 3 flows along the wall surface of the flow guide 301, the inclined flow guide 301 can more effectively guide the fluid from the flow divider to the flow guide pipe 3, and then into the flat tube 6, which helps the uniform distribution of the refrigerant. The present embodiment first flows into the flow divider before the refrigerant flows into the flow guide pipe 3. Although the preliminary flow division and the partitioned reduction of the influence of gravity on the flow division are performed through the flow divider, the influence is not eliminated. By inclining the flow guide, the refrigerant flowing through the circular tube first flows upward along the flow guide, and by changing the flow direction of the refrigerant, the upper refrigerant flow is increased, so that the flow division is uniform.

[0053] It is worth noting that after the refrigerant flows into the header body 1, the refrigerant is not divided, but divided through the flow divider. This setting first divides the zones and then divides the flow, first reduces the influence of height difference on the flow division effect, and then through the flow guide 3 into the flat tube 6, the flow distribution is uniform. If the flow guide 301 is arranged in the header body 1, the uniform flow division effect cannot be achieved.

[0054] For reference, Figures 1 to 6 As shown in the figure, the top end of the flow guide 301 extends in the horizontal direction as the projection plane of the cross section of the flow guide pipe 3, and the wall surface of the flow guide 301 towards the flow divider 2 has an included angle α with the first horizontal line, and the included angle α is 45°-60°.

[0055] In the embodiment, the included angle α is too small to have no flow division effect, and the included angle α is too large to significantly increase the flow resistance of the refrigerant. The included angle α of the flow guide 301 is arranged in this interval, which can achieve the purpose of flow division and does not increase the resistance of the whole system.

[0056] For reference, Figures 1 to 6 As shown in the figure, the flow guide pipe 3 has a flow guide cavity, and at least one partition plate 303 is arranged in the flow guide pipe 3, which divides the flow guide cavity into a first flow guide cavity 341 and a second flow guide cavity 342, and a plurality of flow guides 301 are arranged in the first flow guide cavity 341 and the second flow guide cavity 342, respectively.

[0057] Specifically, the partition plate 303 arranged in the flow guide pipe 3 divides the flow guide cavity into a first flow guide cavity 341 and a second flow guide cavity 342, the first flow divider 201 is arranged corresponding to the first flow guide cavity 341, and the second flow divider 202 is arranged corresponding to the second flow guide cavity 342. After the refrigerant flows out of each flow divider, it flows into the corresponding flow guide cavity.

[0058] In the embodiment, the guide pipe 3 is divided into different guide cavities by the partition plate 303, so that the distribution of the refrigerant to the guide members 301 can be more accurately controlled, thereby improving the uniformity of the fluid distribution. The partition plate 303 can adapt to different fluid characteristics and heat exchange requirements, and the size of the guide cavity and the layout of the guide members 301 can be adjusted to optimize the performance of the heat exchanger.

[0059] As a specific embodiment, two partition plates 303 are arranged in the guide pipe 3, which divide the guide cavity into a first guide cavity 341, a second guide cavity 342 and a third guide cavity. The first shunt pipe 201 is arranged corresponding to the first guide cavity 341, the second shunt pipe 202 is arranged corresponding to the second guide cavity 342, and the third shunt pipe 203 is arranged corresponding to the third guide cavity. The refrigerant flows into the corresponding guide cavity after flowing out of the shunt pipe.

[0060] For reference, Figures 1 to 9 As shown in the figure, the first mounting plate 4 is arranged on the side wall of the guide pipe 3 facing the shunt member 2. The first mounting plate 4 has at least a first panel area 41 and a second panel area 42. A plurality of first guide holes 401, second guide holes 402 and third guide holes 403 are arranged on the first panel area 41 and the second panel area 42. The first guide holes 401, the second guide holes 402 and the third guide holes 403 are arranged in order from bottom to top with the end face of the first mounting plate 4 as the projection face. The width of the first guide holes 401, the second guide holes 402 and the third guide holes 403 gradually increases. The first guide holes 401, the second guide holes 402 and the third guide holes 403 are in communication with the corresponding guide channels 302.

[0061] Specifically, the first mounting plate 4 is arranged as the second embodiment of the embodiment. Compared with the inclined arrangement of the guide member 301, the guide member 301 of the embodiment is not inclined. After the refrigerant flows out of the shunt pipe, it flows into the guide holes and then flows along the guide channels 302. It is worth noting that the arrangement of the guide holes and the inclination of the guide member 301 are two different embodiments. When the guide member 301 is arranged, the refrigerant first passes through the guide member 301 and then enters the flat tube. When the guide hole 401 is arranged, the refrigerant first passes through the guide hole 401 and then enters the flat tube. In essence, it is two different shunt schemes.

[0062] In this embodiment, by setting different widths of the flow guide holes, the flow path of the fluid can be optimized, so that the fluid can flow more smoothly from the flow divider into the flow guide holes and along the flow guide channel 302. This arrangement helps to reduce the resistance and turbulence of fluid flow, and improves the efficiency of fluid flow. The widths of the first flow guide hole 401, the second flow guide hole 402 and the third flow guide hole 403 gradually increase, which has the same effect as the gradually increasing effect of the flow divider from bottom to top, that is, by increasing the local resistance, reducing the refrigerant flow below the heat exchanger, and increasing the refrigerant flow above the heat exchanger, so that the flow distribution is more uniform. By adjusting the size and distribution of the flow guide holes, different flow and heat exchange requirements can be adapted to optimize the performance of the heat exchanger.

[0063] As a specific embodiment, three panel areas are provided on the first mounting plate 4, and each panel area is provided with a first flow guide hole 401, a second flow guide hole 402 and a third flow guide hole 403. The first flow divider 201 is correspondingly arranged with the first panel area 41, the second flow divider 202 is correspondingly arranged with the second panel area 42, and the third flow divider 203 is correspondingly arranged with the third panel area.

[0064] For reference Figures 1 to 9 As shown in the figure, the second mounting plate 5 is provided on the side wall of the flow guide pipe 3 away from the flow divider 2, and a plurality of installation channels 501 are arranged on the second mounting plate 5, the installation channel 501 includes an installation hole 511 and a limiting hole 512 which are in communication with each other, the limiting hole 512 is in communication with the flow guide channel 302 at one end away from the installation hole 511, and the installation hole 511 is used for installing the flat tube 6; taking the cross section of the second mounting plate 5 as the projection plane, the axial height of the installation hole 511 is greater than the axial height of the limiting hole 512.

[0065] Specifically, the flat tube 6 is installed in the installation hole 511, and the installation of the flat tube 6 can be accurately positioned and fixed on the second mounting plate 5 due to the installation of the installation hole 511 and the limiting hole 512. Since the axial height of the installation hole 511 is greater than the axial height of the limiting hole 512, the flat tube 6 will abut against the limiting hole 512, which can reduce the assembly difficulty of the flat tube 6, and at the same time can improve the welding reliability. The size of the limiting hole 512 is slightly smaller than the size of the flat tube 6 (the height is reduced by about 0.1mm), which can accurately control the insertion depth of the flat tube 6.

[0066] A heat exchanger, comprising a header assembly and a plurality of micro-channel flat tubes 6, the header assembly is the header assembly described above, and the plurality of micro-channel flat tubes 6 are sequentially and spacedly arranged along the axial direction of the header body 1. The heat exchanger is further provided with a second header 7, and the second header 7 and the first header body 1 are respectively connected with both ends of the flat tube 6.

[0067] Those skilled in the art will readily understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0068] The above merely is the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement etc. made in the spirit and principle of the present application shall be included in the protection scope of the present application. The above is merely the preferred embodiment of the present application, it should be pointed out that, for the ordinary skilled in the art, without departing from the technical principle of the present application, a number of improvements and variations can be made, these improvements and variations should also be considered as the protection scope of the present application.

Claims

1. A header assembly, characterized by, The application relates to a manifold assembly. The manifold assembly comprises a manifold body (1) and a flow distribution member (2). The manifold body (1) has a flow collection cavity (101). The flow distribution member (2) comprises a plurality of first flow distribution pipes (201) and a plurality of second flow distribution pipes (202), the plurality of first flow distribution pipes (201) and the plurality of second flow distribution pipes (202) are sequentially and spacedly arranged along the axial direction of the manifold body (1), the first ends of the first flow distribution pipes (201) and the second flow distribution pipes (202) are communicated with the flow collection cavity (101), and the second ends of the first flow distribution pipes (201) and the second flow distribution pipes (202) are used for guiding refrigerant into flat tubes (6). The diameter of the first flow distribution pipe (201) is smaller than the diameter of the second flow distribution pipe (202), and along the axial direction of the manifold body (1), the refrigerant is sequentially distributed into the plurality of first flow distribution pipes (201) and the plurality of second flow distribution pipes (202).

2. The collector assembly of claim 1, wherein, A plurality of third flow distribution pipes (203) are arranged between the plurality of first flow distribution pipes (201) and the plurality of second flow distribution pipes (202), the first ends of the third flow distribution pipes (203) are communicated with the flow collection cavity (101), and the second ends of the third flow distribution pipes (203) are used for guiding refrigerant into the flat tubes (6).

3. The collector assembly of claim 2, wherein, Along the axial direction of the manifold body (1), the diameters of the first flow distribution pipe (201), the third flow distribution pipe (203) and the second flow distribution pipe (202) sequentially increase, and the pipe diameter ratio of adjacent flow distribution pipes is between 1.1 and 1.

3.

4. The collector assembly of claim 1, wherein, The manifold assembly further comprises a flow guide pipe (3), the axial extension direction of the flow guide pipe (3) is the same as that of the manifold body (1), the first ends of the first flow distribution pipe (201) and the second flow distribution pipe (202) are connected with the manifold body (1), the second ends of the first flow distribution pipe (201) and the second flow distribution pipe (202) are connected with the flow guide pipe (3), and the flow guide pipe (3) is used for guiding refrigerant into the flat tubes (6).

5. The collector assembly of claim 4, wherein, A plurality of flow guide members (301) are arranged in the flow guide pipe (3), the plurality of flow guide members (301) are spacedly arranged along the axial direction of the flow guide pipe (3), and flow guide channels (302) are formed between adjacent flow guide members (301).

6. The collector assembly of claim 5, wherein, With the cross section of the flow guide pipe (3) as a projection plane, the flow guide member (301) is obliquely arranged, and the bottom end of the flow guide member (301) extends towards the flow distribution member (2).

7. The collector assembly of claim 6, wherein, With the cross section of the flow guide pipe (3) as a projection plane, the extension line of the top end of the flow guide member (301) in the horizontal direction is a first horizontal line, the wall surface of the flow guide member (301) towards the flow distribution member (2) has an included angle alpha with the first horizontal line, and the included angle alpha is 45-60 degrees.

8. The collector assembly of claim 5, wherein, The flow guide pipe (3) has a flow guide cavity, and at least one partition plate (303) is arranged in the flow guide pipe (3), the partition plate (303) divides the flow guide cavity into a first flow guide cavity (341) and a second flow guide cavity (342), and a plurality of flow guide pieces (301) are arranged in the first flow guide cavity (341) and the second flow guide cavity (342) respectively.

9. The collector assembly of claim 5, wherein, The flow guide pipe (3) is provided with a first mounting plate (4) on the side wall facing the flow distribution piece (2), the first mounting plate (4) has at least a first panel area (41) and a second panel area (42), a plurality of first flow guide holes (401), second flow guide holes (402) and third flow guide holes (403) are arranged on the first panel area (41) and the second panel area (42), the first flow guide holes (401), the second flow guide holes (402) and the third flow guide holes (403) are sequentially arranged from bottom to top with the end face of the first mounting plate (4) as a projection face, the widths of the first flow guide holes (401), the second flow guide holes (402) and the third flow guide holes (403) gradually increase, and the first flow guide holes (401), the second flow guide holes (402) and the third flow guide holes (403) are in communication with the corresponding flow guide channels (302).

10. The collector assembly of claim 6 or 9, wherein, The flow guide pipe (3) is provided with a second mounting plate (5) on the side wall away from the flow distribution piece (2), a plurality of spaced mounting channels (501) are arranged on the second mounting plate (5), the mounting channel (501) includes a mounting hole (511) and a limiting hole (512) in communication with each other, one end of the limiting hole (512) away from the mounting hole (511) is in communication with the flow guide channel (302), and the mounting hole (511) is used for mounting a flat tube (6); with the cross section of the second mounting plate (5) as a projection face, the axial height of the mounting hole (511) is greater than the axial height of the limiting hole (512).

11. A heat exchanger comprising a manifold assembly and a plurality of microchannel flat tubes (6), characterized in that, The manifold assembly is the manifold assembly of any one of claims 1-10, and a plurality of the micro-channel flat tubes (6) are sequentially and spacedly arranged along the axial direction of the manifold body (1).

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