Header structure, heat exchanger and refrigeration equipment

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a header structure which comprises a header body, a heat exchanger and a heat exchanger. The flow equalizing partition plate is arranged in the collecting pipe body and is coaxial with the collecting pipe body, and flow equalizing holes formed in the axial direction in a penetrating mode are formed in the flow equalizing partition plate and used for conducting flow equalizing treatment on refrigerants flowing through the flow equalizing partition plate; a flow equalizing gap is formed between at least part of the outer periphery of the flow equalizing partition plate and the corresponding pipe inner wall of the collecting pipe body. According to the flow equalizing partition plate adopted by the header structure, flow equalizing holes can be utilized to equalize the flow of the refrigerant, and meanwhile, the flow equalizing gaps formed by the flow equalizing partition plate and the inner wall of the header can also equalize the flow of the refrigerant, so that the flow equalizing path of the flow equalizing partition plate is effectively expanded, the flow equalizing effect on the refrigerant is improved, and the flow equalizing efficiency is improved. And the actual heat exchange efficiency of the heat exchanger can be effectively enhanced. The utility model further discloses the heat exchanger and refrigeration equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchangers, in particular to a header structure, a heat exchanger and a refrigeration device. BACKGROUND

[0002] For refrigeration devices such as air conditioners and refrigerators, heat exchangers (evaporators and condensers) are core components for heat transfer. Common heat exchanger types include shell-and-tube heat exchangers, plate heat exchangers and finned tube heat exchangers. Generally, air conditioner products such as wall-mounted air conditioners and floor-standing air conditioners use finned tube heat exchangers as their heat exchange components. The main components of such heat exchangers include heat exchange tubes, fins and a header. The heat exchange tubes are used for direct heat exchange between refrigerant and air, the fins are used to increase the heat exchange area of the heat exchanger to improve heat exchange efficiency, and the header is used for refrigerant distribution and collection. The header connects the inlet and outlet liquid pipes of the heat exchanger and the plurality of heat exchange tubes, and distributes the refrigerant to be exchanged to the plurality of heat exchange tubes and collects the refrigerant after heat exchange.

[0003] In actual application of the heat exchanger, it is found that due to various heat exchange conditions and external temperatures, the refrigerant flowing into the heat exchanger is not completely in liquid or gaseous state, but mostly in gas-liquid two-phase mixed state. Due to the difference in density between gaseous refrigerant and liquid refrigerant, the mixed-phase refrigerant is unevenly distributed in the header, which affects the actual heat exchange efficiency of the heat exchanger. In view of the above situation, some refrigeration product manufacturers add spiral turbulence elements and flow distribution plates in the header of the heat exchanger. These components can further disperse the refrigerant to improve the uniformity of the refrigerant in the header.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related art, the flow distribution plate is in the form of a circular plate, and a plurality of small flow distribution holes are provided on the plate body. The refrigerant can be dispersed when flowing through the flow distribution holes, and the uniformity of the refrigerant is improved. However, the actual refrigerant flow distribution effect of the flow distribution plate with the above configuration is limited, and the flow distribution effect still needs to be further improved.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. INVENTION CONTENTS

[0007] The following presents a simplified summary of some aspects of the disclosure in order to provide a basic understanding. This summary is not an extensive overview of the disclosure and is not intended to identify key / critical elements or to delineate the scope of the embodiments. Its sole purpose is to present some aspects of the disclosure in a simplified form as a prelude to the more detailed description that is presented later.

[0008] The application provides a header structure, a heat exchanger and a refrigeration device, and aims to solve the problem of poor flow uniformity of the flow uniformity element applied to the header in the related art.

[0009] According to the first aspect of the application, a header structure is provided, comprising:

[0010] a header pipe body, which is internally structured with a flow channel for the flow of refrigerant;

[0011] a flow uniformity baffle, which is arranged inside the header pipe body and coaxial with the header pipe body, and is provided with a flow uniformity hole formed in the axial direction, for flow uniformity treatment of the refrigerant flowing therethrough;

[0012] wherein at least part of the outer periphery of the flow uniformity baffle and the corresponding inner wall of the header pipe body have a flow uniformity gap.

[0013] In some optional embodiments, the extension curve of the flow uniformity gap is in the form of a circular arc, and the value range is π / 9-π.

[0014] In some optional embodiments, the number of flow uniformity gaps is multiple, and is uniformly and spacedly arranged along the outer periphery of the flow uniformity baffle.

[0015] In some optional embodiments, the number of flow uniformity gaps is even, and is arranged symmetrically along the axial center of the flow uniformity baffle.

[0016] In some optional embodiments, in the radial direction of the flow uniformity baffle, the value range of the flow uniformity gap is 0.5-3mm.

[0017] In some optional embodiments, the flow uniformity baffle and the header pipe body are connected through a clamping structure, and the clamping structure comprises:

[0018] a clamping protrusion, which is formed outward in the radial direction on the outer periphery of the flow uniformity baffle;

[0019] a clamping groove, which is formed inward in the radial direction on the inner wall of the header pipe body and corresponds in position to the clamping protrusion; the clamping groove and the clamping protrusion constitute clamping cooperation;

[0020] wherein the protruding length of the clamping protrusion is greater than the inward recess depth of the clamping groove, so that the flow uniformity gap is formed between the flow uniformity baffle and the inner wall.

[0021] In some optional embodiments, the clamping protrusion comprises a main body segment and an outward protruding end, the main body segment is formed on the flow uniformity baffle, and the outward protruding end is used for clamping cooperation with the clamping groove.

[0022] The axial dimension of the outer convex end is greater than the axial dimension of the main body section, or the lateral dimension of the outer convex end is greater than the lateral dimension of the main body section.

[0023] In some optional embodiments, the flow-equalizing hole comprises a plurality of flow-equalizing sub-holes, and the plurality of flow-equalizing sub-holes are uniformly arranged on the flow-equalizing partition plate along the same circumferential line; and / or,

[0024] The flow-equalizing hole comprises a flow-equalizing center hole, and the flow-equalizing center hole is arranged on the axis of the flow-equalizing partition plate.

[0025] According to the embodiments of the second aspect of the present application, a heat exchanger is also provided, comprising a heat exchanger main body and the header structure according to any one of the embodiments of the first aspect.

[0026] According to the embodiments of the second aspect of the present application, a refrigeration device is also provided, comprising a device main body and the heat exchanger according to the embodiments of the second aspect.

[0027] The header structure, the heat exchanger and the refrigeration device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0028] The flow-equalizing partition plate used in the header structure in the embodiments can not only equalize the flow of the refrigerant through the flow-equalizing hole, but also equalize the flow of the refrigerant through the flow-equalizing gap formed between the flow-equalizing partition plate and the inner wall of the pipe, thereby effectively expanding the flow-equalizing path of the flow-equalizing partition plate, improving the flow-equalizing effect of the refrigerant, and effectively enhancing the actual heat exchange efficiency of the heat exchanger.

[0029] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0030] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0031] Figure 1 is a cross-sectional schematic view of the header structure provided by an embodiment of the present disclosure;

[0032] Figure 2 is a longitudinal cross-sectional schematic view of the header structure provided by an embodiment of the present disclosure;

[0033] Figure 3 is a transverse cross-sectional schematic view of the header structure provided by an embodiment of the present disclosure;

[0034] Figure 4a is a schematic view of the flow-equalizing partition plate provided by an embodiment of the present disclosure;

[0035] Figure 4b is a schematic diagram of a flow-equalizing baffle provided by yet another embodiment of the present disclosure;

[0036] Figure 4c is a schematic diagram of a flow-equalizing baffle provided by yet another embodiment of the present disclosure;

[0037] Figure 5 is a schematic diagram of a header structure provided by an embodiment of the present disclosure;

[0038] Figure 6 is a schematic diagram of a heat exchanger provided by an embodiment of the present disclosure;

[0039] Figure 7 is a schematic diagram of a refrigeration device provided by an embodiment of the present disclosure.

[0040] Reference Signs:

[0041] 100, header structure;

[0042] 110, header tube; 111, external pipe section; 112, shunt pipe section;

[0043] 120, flow-equalizing baffle; 121, flow-equalizing hole; 1211, first flow-equalizing sub-hole; 1212, flow-equalizing center hole; 122, flow-equalizing gap;

[0044] 210, clamping protrusion; 220, clamping groove;

[0045] 300, heat exchanger; 310, heat exchanger body;

[0046] 410, device body; 420, outdoor heat exchanger. DETAILED DESCRIPTION

[0047] In order to enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are used only for reference and are not intended to limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0048] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances in order to describe the embodiments of the present disclosure herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0049] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0050] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0051] Unless otherwise specified, the term "a plurality of" means two or more.

[0052] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0053] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0054] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0055] The present application provides a header structure 100, which can be applied to the heat exchanger component of a refrigeration device, and can be specifically used to realize the distribution of the refrigerant input by the external pipeline into multiple heat exchange pipes, or the confluence of the refrigerant in multiple heat exchange pipes and output to the external pipeline, so as to play the function of distribution / confluence under different operation modes (refrigerant flow direction). Optionally, the type of the refrigeration device includes but is not limited to air conditioner, refrigerator, freezer, etc., and correspondingly, the type of the specific application heat exchanger includes but is not limited to evaporator, condenser and other components that play the role of heat exchange.

[0056] In combination with Figures 1 to 5As shown, the present disclosure provides a header structure 100, which at least comprises a header pipe body 110 and a flow equalization baffle 120. The header pipe body 110 is used to connect the external pipeline and the heat exchange pipe, and is internally configured with a refrigerant flow path, thereby realizing the communication of the refrigerant flow path between the external pipeline and the heat exchange pipe. The flow equalization baffle 120 is arranged inside the header pipe body 110 and coaxial with the header pipe body 110. The flow equalization baffle 120 is used to equalize the flow of the refrigerant flowing therethrough, so that the gaseous refrigerant and the liquid refrigerant are more uniformly mixed, and the situation that the proportion of gaseous (or liquid) refrigerant in the refrigerant flowing to part of the heat exchange pipe is too high or too low is reduced.

[0057] In some optional embodiments, the header pipe body 110 comprises an external connection pipe section 111 and a flow distribution pipe section 112, and the external connection pipe section 111 and the flow distribution pipe section 112 are configured as a one-piece structure without welding seams. The external connection pipe section 111 is used to connect the relevant refrigerant pipeline outside the heat exchanger to input / output the refrigerant. The flow distribution pipe section 112 is used to connect the pipe section of the heat exchange pipe, and is provided with a plurality of flow distribution holes along the pipe length direction thereof, each flow distribution hole corresponding to a heat exchange pipe. The flow distribution pipe section 112 can distribute the input refrigerant to each heat exchange pipe or converge the refrigerant in each heat exchange pipe.

[0058] In the embodiments, the flow distribution pipe section 112 of the header pipe body 110 is a straight pipe structure and is arranged parallel to the vertical direction. One end of the external connection pipe section 111 is connected to the top port or the bottom port of the flow distribution pipe section 112, thereby realizing the input / output of the refrigerant from the top or the bottom of the flow distribution pipe section 112. Optionally, the external connection pipe section 111 is configured in the form of an L-shaped or U-shaped pipe section to adapt to the assembly form with the flow distribution pipe section 112 and facilitate the delivery of the refrigerant. In the embodiments, the flow equalization baffle 120 is arranged inside the flow distribution pipe section 112, thereby equalizing the flow of the gas-liquid mixed state refrigerant flowing into the flow distribution pipe section 112.

[0059] Optionally, the header pipe body 110 is configured in the form of a circular cross section. Alternatively, the header pipe body 110 is configured in the form of a square, oval, racetrack, or other forms, which are not limited in the present disclosure. In the following embodiments, the header pipe body 110 with a circular cross section is exemplarily described.

[0060] In some embodiments, the flow uniformizing baffle 120 is a plate structure, and the outer contour of the flow uniformizing baffle 120 is adapted to the cross section of the header tube 110. For example, for the circular cross section of the header tube 110 shown in the foregoing, the outer contour of the flow uniformizing baffle 120 is also circular; or for the square cross section of the header tube 110 shown in the foregoing, the outer contour of the flow uniformizing baffle 120 is also square. In this way, the flow uniformizing baffle 120 can ensure the lateral coverage of the flow passage of the refrigerant in the header tube 110, so that most of the refrigerant can flow through the flow uniformizing baffle 120 and be subjected to flow uniformizing treatment.

[0061] As shown in Figures 1 to 3 , the flow uniformizing baffle 120 is arranged inside the header tube 110, and the axis of the flow uniformizing baffle 120 is coaxial with the axis of the header tube 110, that is, the plate surface of the flow uniformizing baffle 120 is perpendicular to the axis of the header tube 110. In addition, a plurality of flow uniformizing holes 121 are formed on the flow uniformizing baffle 120 and penetrate along the axial direction of the plate body, and the flow uniformizing holes 121 can serve as the flow passage of the refrigerant through the flow uniformizing baffle 120. Here, the working principle of the flow uniformizing baffle 120 is that the total area of the flow passages of the plurality of flow uniformizing holes 121 of the flow uniformizing baffle 120 is smaller than the lateral cross-sectional area of the header tube 110, so that the refrigerant will be subjected to local resistance when flowing through the flow uniformizing holes 121, thereby reducing the flow rate of the refrigerant, and further mixing the gaseous refrigerant and the liquid refrigerant to form a relatively uniform and stable flow field.

[0062] In some embodiments, as shown in Figure 3 and Figure 4a , the flow uniformizing hole 121 includes a plurality of flow uniformizing sub-holes, and the plurality of flow uniformizing sub-holes are uniformly arranged on the flow uniformizing baffle 120 along the same circumferential line, so as to improve the uniformity of the refrigerant flowing through the flow uniformizing baffle 120. Alternatively, the flow uniformizing hole 121 includes a plurality of first flow uniformizing sub-holes 1211 and a plurality of second flow uniformizing sub-holes, wherein the first flow uniformizing sub-holes 1211 are arranged along a first circumferential line, and the second flow uniformizing sub-holes are arranged along a second circumferential line, and the first circumferential line and the second circumferential line are coaxial and have different circumferential radii. In this way, the number of flow uniformizing sub-holes on the flow uniformizing baffle 120 can be effectively increased, and the flow passage of the refrigerant can be expanded.

[0063] In yet some embodiments, as shown in Figure 4b , the flow uniformizing hole 121 includes a flow uniformizing center hole 1212 arranged on the axis of the flow uniformizing baffle 120. In this embodiment, the flow uniformizing baffle 120 adopts a single flow uniformizing hole 121 form, which can also achieve the effect of flow uniformization for the refrigerant, and the single flow uniformizing center hole 1212 can also to some extent throttle the refrigerant flowing therethrough.

[0064] In yet some embodiments, as shown in Figure 4cAs shown, the flow equalization hole 121 includes a flow equalization center hole 1212 and a plurality of flow equalization sub-holes. Similar to the two embodiments described above, the flow equalization center hole 1212 is arranged on the axis of the flow equalization partition plate 120, and the plurality of flow equalization sub-holes are arranged on the flow equalization partition plate 120 along the same circumferential line. In this embodiment, the flow equalization center hole 1212 and the flow equalization sub-holes cooperate to function together to equalize the flow of the gas-liquid mixed refrigerant.

[0065] Meanwhile, in the above-mentioned embodiments, in addition to using the flow equalization hole 121 to equalize the flow of the refrigerant, the flow equalization partition plate 120 in the present application can also equalize the flow of the refrigerant through the flow equalization gap 122. Here, at least part of the outer periphery of the flow equalization partition plate 120 and the corresponding inner wall of the header tube 110 form the aforementioned flow equalization gap 122, which is also one of the paths for the refrigerant to flow through the flow equalization partition plate 120, thereby achieving the effect of equalizing and regulating the flow of the refrigerant (especially the refrigerant flowing close to the inner wall of the header tube 110).

[0066] In the test, it was found that for the gas-liquid mixed refrigerant, due to the differences in density, viscosity, etc. of the gaseous and liquid refrigerants, the liquid refrigerant mostly flows close to the inner wall side, and the gaseous refrigerant mostly flows close to the axis side, resulting in a large difference in flow rate and gas-liquid ratio between the axis side and the inner wall side of the header tube 110. Therefore, in this embodiment, not only is the flow of the gas-liquid refrigerant on the axis side equalized through the flow equalization hole 121 on the flow equalization partition plate 120, but the flow of the gas-liquid refrigerant close to the inner wall side is also equalized through the flow equalization gap 122, thereby effectively improving the uneven mixing of the gas-liquid refrigerant in each region of the cross section of the header tube 110.

[0067] In some optional embodiments, the outer contour area of the flow equalization partition plate 120 is slightly smaller than the cross-sectional area of the inner wall of the header tube 110, so that the space between the outer contour of the flow equalization partition plate 120 and the inner wall of the header tube 110 serves as the aforementioned flow equalization gap 122. For example, for the header tube 110 with a circular cross section in the above-mentioned embodiments, the outer diameter of the flow equalization partition plate 120 is smaller than the inner diameter of the header tube 110. In this form, the outer periphery of the flow equalization partition plate 120 and the inner wall of the header tube 110 form a circular annular gap space, which serves as the flow equalization gap 122 for the flow of the refrigerant and achieves the effect of equalizing the flow.

[0068] Optionally, the flow equalization gap 122 is configured in the form of a gap with uniform width. For example, the inner diameter of the header tube 110 of a certain model is 12 mm, and the outer diameter of the flow equalization partition plate 120 arranged inside is 8 mm. Therefore, a gap space with a radial width of 2 mm is reserved in the circumferential direction between the header tube 110 and the flow equalization partition plate 120, and is used as the flow equalization gap 122 of the flow equalization partition plate 120.

[0069] In another alternative, the outer contour of the flow uniformizing baffle 120 does not completely correspond to the cross-sectional shape of the header tube 110, so that the flow uniformizing gap 122 is configured in the form of a non-uniform-width gap. For example, the inner diameter of the header tube 110 of a certain model is 16 mm, the flow uniformizing baffle 120 arranged inside the header tube 110 is in the form of an ellipse, and the outer diameter of the long axis of the flow uniformizing baffle 120 is 14 mm and the outer diameter of the short axis is 10 mm. In this case, the outer periphery of the two ends of the long axis of the flow uniformizing baffle 120 forms a gap space of 1 mm with the inner wall of the header tube 110, the outer periphery of the two ends of the short axis forms a gap space of 3 mm with the inner wall of the header tube 110, and the outer periphery between the long axis and the short axis gradually changes from 1 mm to 3 mm with the inner wall of the header tube 110, and together form the aforementioned flow uniformizing gap 122.

[0070] In the foregoing embodiments, in the radial direction of the flow uniformizing baffle 120, the flow uniformizing gap 122 has a range of 0.5-3 mm. For example, the flow uniformizing gap 122 has a specific value of 0.5 mm, 1 mm, 1.5 mm, 2.3 mm, 2.8 mm, 3 mm, etc.

[0071] In yet some alternative embodiments, the flow uniformizing gap 122 has an arc shape, and has a range of π / 9-π. For example, the flow uniformizing gap 122 has an arc value of π / 9, π / 6, π / 3, π / 2, 3π / 4, etc.

[0072] Optionally, the same flow uniformizing baffle 120 forms a plurality of flow uniformizing gaps 122 with the header tube 110, and the plurality of flow uniformizing gaps 122 are uniformly spaced along the same circumferential line. For example, the number of flow uniformizing gaps 122 is 2, 3, 4, 6, etc., and the number of flow uniformizing gaps 122 can be set as needed by those skilled in the art. Further, the same group of flow uniformizing gaps 122 has an equal-arc form, for example, when the number of flow uniformizing gaps 122 is 3, the arc of each flow uniformizing gap 122 is π / 6; or when the number of flow uniformizing gaps 122 is 6, the arc of each flow uniformizing gap 122 is π / 9.

[0073] In some alternative embodiments, the number of flow uniformizing gaps 122 is even, for example, 2, 4, 8, etc. The even number of flow uniformizing gaps 122 is arranged symmetrically along the axis center of the flow uniformizing baffle 120, so that the plurality of flow uniformizing gaps 122 are uniformly distributed in the circumferential direction, and the flow uniformizing effect is good.

[0074] In yet some embodiments, the arc of the same group of flow uniformizing gaps 122 is in the form of a non-equal arc, for example, when the number of flow uniformizing gaps 122 is 3, the arcs of the 3 flow uniformizing gaps 122 are π / 6, π / 6 and π / 2, respectively.

[0075] In the aforementioned embodiments, the plurality of flow-sharing gaps 122 are arranged at intervals, and adjacent flow-sharing gaps are separated by arc-shaped separators. Optionally, the arc-shaped separators are formed to protrude outward from the outer periphery of the flow-sharing baffle 120 and extend along the outer periphery of the flow-sharing baffle 120. The arc-shaped separators are generally approximately circular arc-shaped protruding plates, and their outer periphery sides abut against the inner wall of the manifold body 110, thereby providing spatial separation.

[0076] In some other embodiments not shown in the drawings, the outer contour area of ​​the flow balancing baffle 120 is equal to the cross-sectional area of ​​the inner wall of the manifold body 110, and an annular groove is formed on the periphery of the inner wall of the tube corresponding to the flow balancing baffle 120. The annular groove is spaced apart from the flow balancing baffle 120 in the radial direction, and the annular groove connects the upper and lower spaces of the flow balancing baffle 120 in the axial direction, so that the annular groove can be used as the aforementioned flow balancing gap 122.

[0077] Similar to the previous embodiment, the annular groove is constructed as a groove structure with a uniform groove depth, so that the flow-sharing gap 122 is a gap of uniform width. For example, the annular groove is formed by being radially recessed to a depth of 2 mm along the inner circumference of the tube inner wall. Alternatively, the annular groove is constructed as a groove structure with a non-uniform groove depth, so that the flow-sharing gap 122 is a gap of non-uniform width. For example, the annular groove is recessed to a depth of 1 mm to 2 mm along the inner circumference of the tube inner wall.

[0078] In this embodiment, in the axial direction of the manifold body 110, the width of the annular groove is greater than the thickness of the flow balancing baffle 120. For example, the width of the annular groove and the thickness of the flow balancing baffle 120 satisfy the following relationship:

[0079] (W 槽 -δ 板 ) / 2=H 槽 ;

[0080] Among them, W 槽 is the width of the annular groove, δ 板 H is the thickness of the flow-sharing partition 120. 槽 is the groove depth of the annular groove.

[0081] Here, the axial gap formed between the annular groove and the flow balancing partition 120 serves as a path for the refrigerant to flow in / out. In this embodiment, the path width of the axial gap is set to be basically consistent with the groove depth of the annular groove, so that the path width of the refrigerant flowing through the flow balancing gap 122 remains basically unchanged, thereby ensuring the smoothness of the refrigerant flow.

[0082] Optionally, the annular groove comprises a plurality of arcuate sub-grooves extending along the same circumference and spaced apart. The extension of each arcuate sub-groove is in the shape of an arc, and the range of the arcuate angle is π / 9 to π. For example, the range of the arcuate sub-grooves may be π / 9, π / 6, π / 3, π / 2, 3π / 4, and so on.

[0083] In many of the aforementioned embodiments, the flow-sharing baffle 120 and the manifold body 110 are integrally formed. For example, in the aforementioned embodiment where the outer contour area of ​​the flow-sharing baffle 120 is slightly smaller than the inner cross-sectional area of ​​the manifold body 110, the flow-sharing baffle 120 can be secured to the manifold body 110 via a separating arc plate. Here, the flow-sharing baffle 120 and the manifold body 110 are made of the same material, such as copper or aluminum, and the two can be secured at their joining edges by welding, bonding, or other processes.

[0084] Alternatively, in the aforementioned embodiments, the flow balancing baffle 120 and the manifold body 110 employ a detachable assembly structure. For example, in the aforementioned embodiment where the outer contour area of ​​the flow balancing baffle 120 is slightly smaller than the inner cross-sectional area of ​​the manifold body 110, the flow balancing baffle 120 and the manifold body 110 may be detachably connected via a snap-fit ​​structure.

[0085] Optional, such as Figure 5 As shown, the snap-fit ​​structure includes a snap-fit ​​protrusion 210 and a snap-fit ​​groove 220. The snap-fit ​​protrusion 210 is formed by protruding radially outward from the outer periphery of the flow-sharing baffle 120, and the snap-fit ​​groove 220 is formed by concavely concave radially from the inner wall of the manifold body 110. The positions of the snap-fit ​​protrusion 210 and the snap-fit ​​groove 220 correspond to each other, so that when the flow-sharing baffle 120 and the manifold body 110 are assembled, the snap-fit ​​protrusion 210 and the snap-fit ​​groove 220 can form a corresponding snap-fit ​​fit. Here, the protruding length of the snap-fit ​​protrusion 210 is greater than the concave depth of the snap-fit ​​groove 220, so that after the snap-fit ​​protrusion 210 is snapped into the snap-fit ​​groove 220, the space between the flow-sharing baffle 120 and the inner wall of the tube can form the aforementioned flow-sharing gap 122. That is, in this embodiment, the difference between the protruding length of the snap-fit ​​protrusion 210 and the concave depth of the snap-fit ​​groove 220 is the radial width of the flow-sharing gap 122.

[0086] Furthermore, the cam 210 includes a main body section and an outer convex end. The main body section is formed on the outer periphery of the flow-distributing baffle 120, and the outer convex end is located outside the main body section and is used to engage with the slot 220. Optionally, the axial dimension of the outer convex end is greater than the axial dimension of the main body section. Figure 5As shown, the pressure-bearing capacity of the outer convex end is enhanced by increasing the size of the outer convex end, reducing the occurrence of fracture and damage caused by refrigerant impact pressure, and ensuring the stability of the flow uniformity baffle 120 installation. Similarly, the pressure-bearing effect can also be achieved by changing the circumferential size of the outer convex end, for example, the transverse size of the outer convex end is greater than the transverse size of the main body section, wherein the transverse size is the length of the outer convex end in the circumferential direction.

[0087] In some alternative embodiments, the present application also discloses a heat exchanger 300 which can be used to achieve heat exchange between the refrigerant and its surrounding environment. Optionally, the type of heat exchanger 300 includes but is not limited to finned tube heat exchanger, parallel flow heat exchanger, micro-channel heat exchanger, etc.

[0088] Specifically, as shown, Figure 6 The heat exchanger 300 includes a heat exchanger body 310 and a header structure 100, wherein the header structure 100 is the header structure shown in the above embodiments. Optionally, the number of the above-mentioned header structure 100 provided by the heat exchanger 300 is one, which is arranged on the gas inlet (liquid outlet) side of the heat exchanger body 310, or on the gas outlet (liquid inlet) side of the heat exchanger body 310. Alternatively, the number of the above-mentioned header structure 100 provided by the heat exchanger body 310 is two, which are arranged on the gas inlet (liquid outlet) side of the heat exchanger body 310 and on the gas outlet (liquid inlet) side of the heat exchanger body 310, respectively.

[0089] In some embodiments, when the heat exchanger 300 is used as a condenser, the header structure 100 is arranged on the gas inlet side of the heat exchanger body 310. In the condenser use state, high-temperature gaseous refrigerant flows into the heat exchanger body 310 from the gas inlet side. By using the above-mentioned header structure 100, the uniformity of the flow distribution of the gaseous-liquid mixed refrigerant flowing into the heat exchanger body 310 can be improved by using the flow uniformity hole and the flow uniformity gap of the flow uniformity baffle 120, so as to ensure the heat exchange effect of the heat exchanger 300.

[0090] In some embodiments, the present application also discloses a refrigeration equipment. Optionally, the type of refrigeration equipment includes but is not limited to air conditioner, refrigerator, freezer, etc.

[0091] Specifically, the refrigeration equipment includes an equipment body 410 and a heat exchanger as shown in the above embodiments. Here, taking the type of refrigeration equipment as an air conditioner as an example, the above-mentioned heat exchanger can be an outdoor heat exchanger 420 of the outdoor unit of the air conditioner, as shown in Figure 7 The refrigeration equipment adopts the header structure and the heat exchanger shown in the above embodiments, which can improve the heat exchange efficiency of the heat exchanger, enhance the heat exchange performance, and improve the operating energy efficiency of the whole machine.

[0092] The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A header structure, characterized by, The application relates to a manifold structure. The manifold tube is internally structured with a flow channel for circulating refrigerant. The flow uniformization baffle is arranged in the manifold tube and coaxial with the manifold tube, and the flow uniformization baffle is provided with flow uniformization holes formed in the axial direction, which are used for uniformly processing the refrigerant flowing therethrough. At least part of the outer periphery of the flow uniformization baffle and the corresponding inner wall of the manifold tube have a flow uniformization gap.

2. The header structure of claim 1, wherein The extension curve of the flow uniformization gap is in the form of a circular arc, and the value range is pi / 9 to pi.

3. The header structure of claim 1, wherein The number of the flow uniformization gaps is multiple, and the flow uniformization gaps are uniformly and spacedly arranged along the outer periphery of the flow uniformization baffle.

4. The header structure of claim 3, wherein The number of the flow uniformization gaps is even, and the flow uniformization gaps are symmetrically arranged along the axial center of the flow uniformization baffle.

5. The header structure of any one of claims 1 to 4, wherein, In the radial direction of the flow uniformization baffle, the value range of the flow uniformization gap is 0.5-3 mm.

6. The header structure of any one of claims 1 to 4, wherein, The flow uniformization baffle and the manifold tube are connected through a clamping structure, and the clamping structure comprises: A clamping convex is formed on the outer periphery of the flow uniformization baffle in the radial direction. A clamping groove is formed on the inner wall of the manifold tube in the radial direction, and the clamping groove is in position corresponding to the clamping convex; the clamping groove and the clamping convex are in clamping cooperation. The protruding length of the clamping convex is greater than the inner recess depth of the clamping groove, so that the flow uniformization gap is formed between the flow uniformization baffle and the inner wall.

7. The header structure of claim 6, wherein The clamping convex comprises a main body section and an outer protruding end, the main body section is formed on the flow uniformization baffle, and the outer protruding end is used for clamping cooperation with the clamping groove. The axial dimension of the outer protruding end is greater than the axial dimension of the main body section, or the lateral dimension of the outer protruding end is greater than the lateral dimension of the main body section.

8. The manifold structure according to claim 1, wherein The flow uniformization hole comprises multiple flow uniformization sub-holes, and the multiple flow uniformization sub-holes are uniformly arranged on the flow uniformization baffle along the same circumferential line; and / or The flow uniformization hole comprises a flow uniformization center hole, and the flow uniformization center hole is arranged on the axial line of the flow uniformization baffle.

9. A heat exchanger, characterized by The application relates to a heat exchanger comprising a heat exchanger body and a manifold structure according to any one of claims 1 to 8.

10. A refrigeration appliance characterized in that, The application relates to an apparatus comprising an apparatus body and a heat exchanger according to claim 9.

Images