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 one-way conduction assembly is arranged in the header body and used for enabling the refrigerant to flow along the flow channel in a one-way mode; wherein the one-way conducting assembly comprises a valve seat, a limiting part and a valve element, a valve hole capable of being matched with the valve element in an opening and closing mode is formed in the valve seat, and the limiting part serves as a limiting stop for the valve element to move away from the valve seat; the limiting part comprises a first flow equalizing piece used for carrying out flow equalizing treatment on the refrigerant flowing through the one-way conduction assembly. According to the embodiment of the utility model, the one-way conducting assembly and the flow equalizing part which plays a role in flow equalizing adopt an integrated design, so that the original functions of the one-way conducting assembly and the flow equalizing part are not influenced, and the one-way conducting assembly and the flow equalizing part can be assembled on the header together, thereby reducing the assembly process of related parts and improving the production and manufacturing efficiency. The invention 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] The refrigeration / heat supply function of refrigeration devices such as air conditioners and refrigerators is dependent on the internal refrigeration cycle system, which is generally composed of a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger. As for the structure of conventional outdoor heat exchangers and indoor heat exchangers, the flow direction of the refrigerant flowing through the heat exchanger is opposite in different operating modes, but the number and length of the flow paths remain unchanged, which will cause the actual heat exchange efficiency of the refrigeration / heat supply mode to be suboptimal. In view of the above situation, some refrigeration manufacturers have introduced a heat exchanger with a variable flow function. This heat exchanger, through the cooperation of a one-way valve and a heat exchange tube, can increase the number of flow paths when used as an evaporator and increase the length of the flow path when used as a condenser, thereby improving the working efficiency in the refrigeration / heat supply mode.

[0003] In related technologies, the one-way valve can be installed in the header components such as the gas collecting pipe and the liquid collecting pipe of the heat exchanger. By using the one-way conduction characteristic of the one-way valve, the refrigerant can be divided into all the heat exchange tubes corresponding to the header when flowing into the header in the forward flow direction (the same direction as the one-way valve conduction direction), and only a part of the heat exchange tubes corresponding to the header when flowing into the header in the reverse flow direction (the same direction as the one-way valve conduction direction).

[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] Since the refrigerant flowing into the heat exchanger header is in a gas-liquid two-phase state, in order to improve the uniformity of the flow, a flow uniformity baffle can be arranged in the header to flow the refrigerant. However, in the prior art, the flow uniformity baffle and the one-way valve are respectively assembled with the header, and the manufacturing process is complicated.

[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] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The application provides a header structure, a heat exchanger and a refrigeration device, and aims to solve the problem of inconvenient assembly of a header and a one-way valve and a flow-equalizing baffle in the related art.

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

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

[0011] a one-way conducting assembly arranged in the header pipe body and used for one-way flow of the refrigerant along the flow channel; wherein the one-way conducting assembly comprises a valve seat, a limiting part and a valve core, the valve seat is provided with a valve hole capable of forming opening and closing cooperation with the valve core, and the limiting part is used as a limiting stop for movement of the valve core away from the valve seat;

[0012] The limiting part comprises a first flow-equalizing piece for flow-equalizing treatment of the refrigerant flowing through the one-way conducting assembly.

[0013] In some optional embodiments, the first flow-equalizing piece comprises:

[0014] a first flow-equalizing plate body arranged coaxially with the header pipe body at the limiting part, and the outer periphery of the first flow-equalizing plate body abuts against the inner wall of the header pipe body;

[0015] a first flow-equalizing hole formed through in the thickness direction of the first flow-equalizing plate body.

[0016] In some optional embodiments, the number of the first flow-equalizing holes is multiple, and the first flow-equalizing holes are arranged at intervals along the same circumferential line.

[0017] The radius of the circumferential line where the first flow-equalizing holes are located is greater than the inner diameter of the valve hole.

[0018] In some optional embodiments, the valve seat is formed on the inner wall of the header pipe body, and the valve hole is formed in the middle part of the valve seat.

[0019] The limiting part is arranged at one axial side of the valve seat, and a movement space for the valve core is formed between the limiting part and the valve seat, and the limiting part is used for stop limiting when the valve core moves away from the valve seat by a set distance.

[0020] The valve core is movably arranged between the valve seat and the limiting part, and at least comprises a first state of plugging the valve hole and a second state of opening the valve hole.

[0021] In some optional embodiments, the valve core is spherical; or,

[0022] The valve core comprises a cylindrical part and a hemispherical part formed at one axial end of the cylindrical part, and the hemispherical part is located on the side facing the valve hole.

[0023] In some optional embodiments, the limiting part comprises a plurality of limiting arms, which are evenly spaced along the inner wall of the manifold tube in the circumferential direction; each limiting arm comprises:

[0024] a straight arm segment extending from the valve seat in the axial direction;

[0025] a bent arm segment bent inwardly from the extending end of the straight arm segment in the radial direction; and the inner diameter of the circumferential line where the free ends of the bent arm segments of the plurality of limiting arms are located is smaller than the outer diameter of the valve core;

[0026] The first flow uniformizing member is arranged on the bent arm segment.

[0027] In some optional embodiments, the end of the valve hole of the valve core is provided with a second flow uniformizing member for flow uniformizing the refrigerant flowing through the liquid-facing side of the valve core.

[0028] In some optional embodiments, the second flow uniformizing member comprises:

[0029] a second flow uniformizing plate body configured as a circular plate body and fixed to one side of the end of the valve core; the outer diameter of the second flow uniformizing plate body is smaller than the inner diameter of the valve hole;

[0030] a second flow uniformizing hole formed through the thickness of the second flow uniformizing plate body.

[0031] 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 manifold structure according to any one of the embodiments of the first aspect.

[0032] 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.

[0033] The manifold structure, the heat exchanger and the refrigeration device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0034] In the present embodiment, the one-way conducting assembly and the flow uniformizing member that plays a flow uniformizing role are designed in an integrated manner, so that the flow uniformizing member can not only have the function of flow uniformizing the refrigerant, but also can realize the movement limiting effect of the valve core of the one-way conducting assembly as a limiting part. Therefore, the above integrated design will not affect the original functions of the one-way conducting assembly and the flow uniformizing member, and the one-way conducting assembly and the flow uniformizing member can be assembled together on the manifold, thereby reducing the assembly process of related components and improving the production efficiency.

[0035] 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

[0036] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the embodiments. Like numbers refer to like elements throughout the drawings, and:

[0037] Figure 1 is a disassembled schematic view of a header structure according to an embodiment of the present disclosure;

[0038] Figure 2a is a schematic view of a one-way conduction assembly in a blocking state according to an embodiment of the present disclosure;

[0039] Figure 2b is a schematic view of a one-way conduction assembly in a conducting state according to an embodiment of the present disclosure;

[0040] Figure 3 is a schematic view of a first flow equalizing member according to an embodiment of the present disclosure;

[0041] Figure 4 is a schematic view of a limiting arm according to an embodiment of the present disclosure;

[0042] Figure 5 is a schematic view of a spool structure of a one-way conduction assembly according to another embodiment of the present disclosure;

[0043] Figure 6a is a schematic view of a flow path of a heat exchanger used as a condenser according to an embodiment of the present disclosure;

[0044] Figure 6b is a schematic view of a flow path of a heat exchanger used as an evaporator according to an embodiment of the present disclosure;

[0045] Figure 7 is a schematic view of a refrigeration device according to an embodiment of the present disclosure.

[0046] Reference Signs:

[0047] 100, header tube;

[0048] 200, one-way conduction assembly; 210, valve seat; 211, valve hole; 220, spool; 221, cylindrical portion; 222, hemispherical portion; 230, limiting portion; 231, first flow equalizing member; 2311, first flow equalizing plate body; 2312, first flow equalizing hole; 232, limiting arm; 2321, straight arm segment; 2322, bent arm segment; 240, second flow equalizing member;

[0049] 300, heat exchanger; 310, heat exchanger body; 311, first branch; 312, second branch; 313, third branch; 321, first one-way conduction assembly; 322, second one-way conduction assembly;

[0050] 410, device body; 420, outdoor heat exchanger. DETAILED DESCRIPTION

[0051] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are only used for reference and do not 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, well-known structures and devices can be simplified to facilitate the drawings.

[0052] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned 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 "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0053] 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 based on 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 must have a specific orientation, or 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 represent other meanings, for example, the term "upper" can also be used to represent a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0054] 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 meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0055] Unless otherwise specified, the term "a plurality of" means two or more.

[0056] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0057] The term "and / or", unless specified otherwise, means that the associated relationship is applicable to at least one of the objects, and can exist in three forms. For example, A and / or B means that: A or B, or A and B, three relationships.

[0058] 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.

[0059] The present application provides a header structure which can be applied to the heat exchanger component of a refrigeration equipment, and in particular can be used to realize the distribution of the refrigerant input by the external pipeline to the plurality of heat exchange pipes, or the confluence of the refrigerant in the plurality of heat exchange pipes and the 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 equipment includes but is not limited to air conditioner, refrigerator, freezer, etc., and correspondingly, the type of the heat exchanger applied specifically includes but is not limited to evaporator, condenser, etc. components playing the role of heat exchange.

[0060] In combination Figures 1 to 5 As shown, the present disclosure provides a header structure, which at least includes a header pipe body 100 and a one-way conduction assembly 200. Wherein, the header pipe body 100 is used to connect the external pipeline and the heat exchange pipe of the heat exchanger, and the internal structure is provided with a refrigerant flow path, so as to realize the communication of the refrigerant flow path between the external pipeline and the heat exchange pipe. And, the one-way conduction assembly 200 is arranged inside the header pipe body 100, and in the case of being applied to the heat exchanger type such as variable distribution heat exchanger, the one-way conduction assembly 200 at least includes two functions of one-way conduction and uniform flow of refrigerant, so as to not only take into account the role of controlling the flow direction of refrigerant and the uniformity of refrigerant, but also due to the integration of the above two functions in the one-way conduction assembly 200 in the embodiment, the number of parts of the header can be effectively reduced, the header structure is simplified, and the assembly and processing of the header related components are facilitated.

[0061] In some optional embodiments, the header pipe body 100 includes an external pipe segment and a distribution pipe segment, and the external pipe segment and the distribution pipe segment are configured as a one-piece structure without welding seam. Wherein, the external pipe segment is used to connect the related refrigerant pipeline outside the heat exchanger to input / output the refrigerant; the distribution pipe segment is used to connect the pipe segment part of the heat exchange pipe, and the distribution pipe segment is provided with a plurality of distribution holes along the pipe length direction thereof, each distribution hole corresponds to connect a heat exchange pipe, and the distribution pipe segment can distribute the input refrigerant from the outside to each heat exchange pipe, or confluence the refrigerant in each heat exchange pipe.

[0062] In this embodiment, the branch pipe section of the manifold 100 has a straight pipe structure and is arranged parallel to the vertical direction. One end of the outer pipe section is connected to the top or bottom port of the branch pipe section, thereby enabling refrigerant input / output from the top or bottom of the branch pipe section. Optionally, the outer pipe section is constructed in the form of an L-shape or U-shape to adapt to its assembly form with the branch pipe section and facilitate refrigerant delivery. In this embodiment, the unidirectional flow assembly 200 is disposed inside the branch pipe section and can simultaneously realize the functions of unidirectional flow guidance and flow equalization of the refrigerant flowing through the branch pipe section.

[0063] Optionally, the manifold body 100 is constructed with a circular cross-section. Alternatively, the manifold body 100 may have a square, elliptical, racetrack-shaped, or other cross-sections, which are not limited in this application. The following embodiments primarily use a manifold body 100 with a circular cross-section for illustrative purposes.

[0064] In some alternative embodiments, combined with Figure 1 As shown, the unidirectional conduction assembly 200 includes components such as a valve seat 210, a valve core 220, and a limiting part 230. The valve seat 210 has a valve hole 211 that forms an opening and closing engagement with the valve core 220. The valve core 220 is movably disposed on one axial side of the valve seat 210, and its engagement state with the valve hole 211 can be changed by moving relative to the valve seat 210, thereby realizing the switching of the unidirectional conduction assembly 200 between the conducting and blocking states. Figure 2a and Figure 2b As shown, the limiting part 230 is provided on the side of the valve core 220 away from the valve seat 210. It works together with the valve seat 210 to limit the axial movement space of the valve core 220. It can also stop and limit the valve core 220 when it moves away from the valve seat 210 by a set distance, so as to prevent the valve core 220 from moving too far away from the valve seat 210, resulting in the inability to close the valve hole 211 or the incomplete sealing.

[0065] In this embodiment, as Figure 1 As shown, the valve seat 210 is constructed as a cylindrical solid structure, with a valve hole 211 formed through its central part along the axial direction. The valve hole 211 serves as the path for the refrigerant to flow through the valve seat 210. Optionally, the valve seat 210 is integrally formed on the inner wall of the manifold 100, thus creating a seamless structure between the valve seat 210 and the manifold 100. This ensures the sealing effect of the valve seat 210 on its outer periphery and prevents refrigerant leakage.

[0066] Optionally, the valve orifice 211 is configured as a straight orifice, combined with Figure 2a and Figure 2bAs shown, the radial hole distances of the valve holes 211 are equidistant in the axial cross-sectional direction. Alternatively, the valve holes 211 are configured as non-straight hole patterns, for example, the valve holes 211 are approximately frustum-shaped in the axial cross-sectional direction, and the radial hole distances thereof are gradually reduced from top to bottom.

[0067] In some embodiments, the valve holes 211 have a range of 1.5-20 mm. Alternatively, the valve holes 211 can have a specific value of 1.5 mm, 3 mm, 5 mm, 9.6 mm, 15 mm, 20 mm, etc.

[0068] In some alternative embodiments, the valve core 220 is movably arranged in the space between the valve seat 210 and the limiting portion 230, and at least includes a first state and a second state. In the first state, the valve core 220 abuts against the valve holes 211 of the valve seat 210 to block the valve holes 211 with the valve core 220, and in this state, the one-way conducting assembly 200 is in a blocking state, and the refrigerant cannot flow through the one-way conducting assembly 200; in the second state, the valve core 220 is away from the valve holes 211 of the valve seat 210, so that the space between the valve seat 210 and the valve holes 211 can serve as a path for the refrigerant to flow through, and in this state, the one-way conducting assembly 200 is in a conducting state, and the refrigerant can normally flow through the one-way conducting assembly 200.

[0069] Alternatively, in combination with Figure 2a and Figure 2b As shown, the valve core 220 is configured in a spherical form, and the ball diameter of the valve core 220 is greater than the inner diameter of the valve holes 211, so as to ensure that the valve core 220 can block the valve holes 211 without falling out; here, the advantage of using the spherical valve core is that no matter how much the valve core 220 is rotated by the refrigerant fluid, the valve core 220 can always block the valve holes 211 in the same spherical surface in the aforementioned first state.

[0070] Alternatively, in combination with Figure 5 As shown, the valve core 220 includes a cylindrical portion 221 and a hemispherical portion 222, and the hemispherical portion 222 is formed at an axial end of the cylindrical portion 221 and located on the side of the valve core 220 facing the valve holes 211. In this embodiment, the valve core 220 is blocked and matched with the valve holes 211 by the hemispherical portion 222; at the same time, the axial direction of the cylindrical portion 221 is parallel to the axial direction of the header pipe body 100, and therefore, by using the valve core 220 in the form of the combination of the cylindrical portion 221 and the hemispherical portion 222, the occurrence of the inclination of the valve core 220 deviating from the axis can be reduced, and the sealing effect of the hemispherical portion 222 on the valve holes 211 can be improved.

[0071] In the present embodiment, the end surface radius of the cylindrical portion 221 is equal to the spherical diameter of the spherical portion 222, and the radial section of the spherical portion 222 is connected to the end surface of the cylindrical portion 221, so that the connection position can achieve a relatively smooth transition, reducing the flow resistance of the outer surface of the valve core 220 to the refrigerant. In addition, the cylindrical portion 221 and the spherical portion 222 are integrally formed, so as to ensure the connection strength of the cylindrical portion 221 and the spherical portion 222.

[0072] In some optional embodiments, the limiting portion 230 includes a first flow equalizing member 231, which is arranged on the side of the valve core 220 away from the valve seat 210, and can simultaneously play the role of stopping and limiting the valve core 220 and equalizing the flow of the refrigerant.

[0073] Optionally, in combination with Figure 3 As shown, the first flow equalizing member 231 includes a first flow equalizing plate body 2311, which is configured as a plate structure and is coaxially arranged at the limiting portion 230 of the manifold tube body 100. Here, the outer contour of the first flow equalizing plate body 2311 is adapted to the cross-sectional shape of the manifold tube body 100, and the outer periphery of the first flow equalizing plate body 2311 abuts against the inner wall of the manifold tube body 100. For example, when the cross section of the manifold tube body 100 is circular, the first flow equalizing plate body 2311 is also configured as a circular plate with an outer periphery abutting against the inner wall of the manifold tube body 100; or, when the cross section of the manifold tube body 100 is square, the first flow equalizing plate body 2311 is also configured as a square plate with four sides abutting against the four inner walls of the manifold tube body 100. In this way, the refrigerant flowing through the manifold tube body 100 must flow through the first flow equalizing plate body 2311, thereby ensuring the flow equalization effect of the refrigerant.

[0074] In combination with Figure 3 As shown, a plurality of first flow equalizing holes 2312 are formed through the first flow equalizing plate body 2311 in the thickness direction of the plate body, and the first flow equalizing holes 2312 are the channel paths for the refrigerant flowing through the first flow equalizing plate body 2311. Here, by arranging a plurality of flow equalizing holes, the flow area of the refrigerant flowing through the first flow equalizing plate body 2311 can be narrowed, the local resistance of the refrigerant is increased, and the flow speed of the refrigerant is reduced, so that the gaseous refrigerant and the liquid refrigerant can be mixed at this position, and a relatively uniform gas-liquid mixed state refrigerant can be formed.

[0075] In the present embodiment, the diameter of the first flow equalizing hole 2312 is smaller than the outer diameter of the valve core 220, for example, smaller than the outer diameter of the spherical valve core 220 in the foregoing embodiment, or smaller than the cross-sectional diameter of the cylindrical portion of the valve core 220 in the foregoing embodiment. Thus, the valve core 220 can be prevented from being pulled out of the first flow equalizing hole 2312, so as to achieve the stopping and limiting effect of the first flow equalizing plate body 2311 to the valve core 220.

[0076] Optionally, multiple first flow equalization holes 2312 are evenly arranged along the same circumference on the first flow equalization plate 2311 to ensure the uniformity of refrigerant flow through the first flow equalization plate 2311, such as... Figure 3 As shown. Alternatively, a plurality of first flow equalization holes 2312 are uniformly arranged on the first flow equalization plate 2311 along two or more circumferential lines. For example, some of the first flow equalization holes 2312 are arranged along the first circumferential line, and another portion of the first flow equalization holes 2312 are arranged along the second circumferential line. The first circumferential line and the second circumferential line are collinear, and the second circumferential line is located on the outer ring of the first circumferential line. Therefore, this embodiment increases the number and distribution density of the first flow equalization holes 2312 on the first flow equalization plate 2311, which can enhance the flow equalization performance to a certain extent.

[0077] Furthermore, in some embodiments shown above, the radius of the circumference of the first flow equalization orifice 2312 is larger than the inner diameter of the valve orifice 211. That is, in the axial projection of the first flow equalization orifice 2312 relative to the valve seat 210, the circumference of the first flow equalization orifice 2312 is located on the outer ring side of the valve orifice 211. Thus, when the unidirectional guiding assembly 200 is in the conducting state, the refrigerant can flow more smoothly from the valve orifice 211 to the first flow equalization plate into the first flow equalization orifice 2312.

[0078] In some embodiments, the radius of the circumference of the first flow equalization orifice 2312 is larger than the outer diameter of the valve core 220. That is, on the axial projection of the valve core 220 onto the first flow equalization plate 2311, the circumference of the first flow equalization orifice 2312 is located on the outer ring side of the outer circumference of the valve core 220. This solution can accelerate the smooth flow of refrigerant from the valve seat 210 to the limiting part 230 and reduce the situation where the valve core 220 is excessively deviated due to refrigerant pressure.

[0079] In some alternative embodiments, such as Figure 1 As shown, the limiting part 230 also includes multiple limiting arms 232. The multiple limiting arms 232 are evenly spaced along the inner wall of the manifold 100. The internal space enclosed by the multiple limiting arms 232 is the movement space of the valve core 220. Here, the multiple limiting arms 232 can be regarded as protruding from the inner wall of the pipe towards the axial side. An interval space extending in the circumferential direction is formed between adjacent limiting arms 232. This interval space can serve as a channel for refrigerant to flow from the outside of the valve core 220. In this way, even if the outer surface of the valve core 220 abuts against two of the limiting arms 232, the interval space can still be left between the outer surface of the valve core 220, the inner wall of the pipe, and the two limiting arms 232 for refrigerant to flow. This can prevent the valve core 220 from shifting to one side of the inner wall of the pipe for a long time when it is in the conducting state.

[0080] Optionally, the number of the limiting arms 232 can be 3, 4, 6, 8, etc., and the present application does not limit this. Figure 1 In the illustrated embodiment, the number of the limiting arms 232 is 4.

[0081] In some embodiments, the limiting arm 232 includes a straight arm segment 2321 and a bent arm segment 2322, as shown. Figure 4 The straight arm segment 2321 is formed by extending from the valve seat 210 along the axial direction, and is used to form the aforementioned spacing space; the bent arm segment 2322 is located at the extended end of the straight arm segment 2321 and is formed by bending inwardly along the radial direction from the extended end. Here, the inner diameter of the circumferential line where the free ends of the plurality of bent arm segments 2322 are located is smaller than the outer diameter of the valve core 220, so that the bent arm segment 2322 can also function as a stop limiting action on the valve core 220. In the present embodiment, the first flow uniformizing plate body 2311 is fixed to the bent arm segment 2322 of the limiting arm 232.

[0082] Optionally, in order to avoid the bent arm segment 2322 of the limiting arm 232 blocking the first flow uniformizing hole 2312 of the first flow uniformizing plate body 2311 and affecting the normal flow of the refrigerant, in the present embodiment, the bent arm segment 2322 is located between two adjacent first flow uniformizing holes 2312, and the transverse width of the bent arm segment 2322 is smaller than the spacing between the two adjacent first flow uniformizing holes 2312.

[0083] In yet some optional embodiments, the one-way conduction assembly 200 further includes a second flow uniformizing member 240, which is used to perform flow uniformizing treatment on the refrigerant flowing through the liquid-approaching side of the valve core 220. As shown, Figure 5 The second flow uniformizing member 240 is arranged at the end of the corresponding valve hole 211 of the valve core 220, and in the on-state of the one-way conduction assembly 200, a part of the refrigerant moves close to the outer peripheral side of the valve core 220, so that this part of the refrigerant flows through the end of the valve core 220, thereby allowing the second flow uniformizing member 240 to perform flow uniformizing treatment on the refrigerant.

[0084] Similarly, the second flow uniformizing member 240 includes a second flow uniformizing plate body and a second flow uniformizing hole. The second flow uniformizing plate is configured in the form of a circular plate body, one side of which is fixed to the end of the valve core 220. Optionally, the second flow uniformizing plate can be fixedly connected to the valve core 220 by welding, screwing, bonding, etc. The second flow uniformizing hole is formed through along the thickness direction of the second flow uniformizing plate body, and serves as a path for the refrigerant to flow through the second flow uniformizing plate body and to achieve the function of flow uniformization.

[0085] In an embodiment, the second flow equalization plate body is coaxially arranged with the valve core 220, and an outer diameter of the second flow equalization plate body is smaller than an inner diameter of the valve hole 211, so that the second flow equalization plate body can be accommodated in a hole space of the valve hole 211 in a state where the valve core 220 blocks the valve hole 211, thereby avoiding that the second flow equalization plate body affects the blocking cooperation between the valve core 220 and the valve hole 211.

[0086] In some alternative embodiments, the present application further discloses a heat exchanger 300, which can be used to realize heat exchange between refrigerant and its circumferential environment. Optionally, the type of the heat exchanger 300 includes but is not limited to a finned tube heat exchanger, a parallel flow heat exchanger, a micro-channel heat exchanger, etc.

[0087] Specifically, the heat exchanger 300 includes a heat exchanger body 310 and a header structure, wherein the header structure is the header structure shown in the foregoing embodiments. Optionally, the number of the above-mentioned header structures arranged on the heat exchanger 300 is one, which is arranged on the gas inlet (liquid outlet) side of the heat exchanger 300, or arranged on the gas outlet (liquid inlet) side of the heat exchanger 300. Alternatively, the number of the above-mentioned header structures arranged on the heat exchanger 300 is two, which are respectively arranged on the gas inlet (liquid outlet) side of the heat exchanger 300 and the gas outlet (liquid inlet) side of the heat exchanger 300.

[0088] In some embodiments, the type of the heat exchanger 300 is a variable flow distribution heat exchanger type, that is, the flow paths of the heat exchanger 300 are different when used as an "evaporator" and a "condenser", so that the heat exchanger 300 can achieve better heat exchange efficiency in both refrigeration flow direction and heating flow direction.

[0089] As shown in Figure 6a and Figure 6b , the heat exchange pipe group of the heat exchanger 300 includes a first branch 311, a second branch 312 and a third branch 313 arranged in sequence, and the same side pipe end (left side pipe end in the figure) of the three heat exchange branches is connected to the first header structure, and the other same side pipe end (right side pipe end in the figure) is connected to the second header structure. Among them, the first header structure and the second header structure both adopt the header form in the foregoing embodiments, and here, the first header structure is internally provided with a first one-way conduction assembly 321, which is configured as a downward one-way conduction; the second header structure is internally provided with a second one-way conduction assembly 322, which is configured as an upward one-way conduction.

[0090] In this way, in combination with Figure 6aThe flow path diagram of the heat exchanger 300 when used as a "condenser" can be seen that the first branch 311, the second branch 312 and the third branch 313 can constitute a series type refrigerant flow path, the refrigerant sequentially passes through each heat exchange branch for heat exchange, the refrigerant flow process and condensation heat exchange time is longer, and the refrigerant can achieve better supercooling degree. In combination with Figure 6b The flow path diagram of the heat exchanger 300 when used as an "evaporator" can be seen that the first branch 311, the second branch 312 and the third branch 313 can constitute a parallel type refrigerant flow path, the refrigerant is respectively distributed to the three heat exchange branches for heat exchange, the refrigerant can be dispersed to evaporate and absorb heat from the external environment, and the heat exchange efficiency is higher. In the above process, the refrigerant can be subjected to flow equalization treatment when flowing through the first one-way conducting assembly 321 and the second one-way conducting assembly 322, thereby improving the uniformity of the refrigerant mixing.

[0091] In still other embodiments, the present application also discloses a refrigeration device. Optionally, the type of the refrigeration device includes but is not limited to an air conditioner, a refrigerator, a freezer, etc.

[0092] Specifically, the refrigeration device includes a device main body 410 and a heat exchanger as shown in the foregoing embodiments. Herein, taking the type of the refrigeration device as an air conditioner as an example, the heat exchanger can be an outdoor heat exchanger 420 of an outdoor unit of the air conditioner, as shown in Figure 7 and / or, an indoor heat exchanger of an indoor unit of the air conditioner. The refrigeration device adopts the header structure and the heat exchanger shown in the foregoing embodiments, so that the heat exchange efficiency of the heat exchanger can be improved, the heat exchange performance can be enhanced, and the operation energy efficiency of the whole machine can be improved.

[0093] The above description and drawings sufficiently show the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts 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 various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A header structure, characterized by, The application relates to a heat exchanger. The heat exchanger comprises a header pipe body, a one-way conducting assembly arranged in the header pipe body and used for one-way flow of refrigerant along a flow channel; wherein the one-way conducting assembly comprises a valve seat, a limiting part and a valve core; the valve seat is provided with a valve hole which can be matched with the valve core to open and close; the limiting part is used for limiting the movement of the valve core away from the valve seat. The limiting part comprises a first flow equalizing part which is used for flow equalizing treatment of the refrigerant flowing through the one-way conducting assembly. The first flow equalizing part comprises a first flow equalizing plate body which is coaxially arranged at the limiting part of the header pipe body and the outer periphery of the first flow equalizing plate body abuts against the inner wall of the header pipe body; and a first flow equalizing hole which is formed along the thickness direction of the first flow equalizing plate body.

2. The header structure of claim 1, wherein The number of the first flow equalizing holes is multiple and the first flow equalizing holes are arranged along the same circumferential line. The radius of the circumferential line where the first flow equalizing holes are located is greater than the inner diameter of the valve hole.

4. The header structure according to claim 1, wherein the valve seat is formed on the inner wall of the header pipe body and the valve hole is formed in the middle of the valve seat; the limiting part is arranged on the axial side of the valve seat and a moving space for the valve core is formed between the limiting part and the valve seat; the limiting part is used for limiting the movement of the valve core away from the valve seat by a certain distance; the valve core is movably arranged between the valve seat and the limiting part and at least comprises a first state of blocking the valve hole and a second state of opening the valve hole.

3. The header structure of claim 2, wherein, 5. The header structure according to claim 4, wherein the valve core is spherical; or the valve core comprises a columnar part and a hemispherical part formed on the axial one end of the columnar part and the hemispherical part is located on the side facing the valve hole. The limiting part comprises multiple limiting arms which are uniformly and spacedly arranged along the circumferential direction of the inner wall of the header pipe body; each limiting arm comprises a straight arm segment which is formed along the axial direction from the valve seat; and a bent arm segment which is formed by bending the extending end of the straight arm segment in the radial direction inwardly; the inner diameter of the circumferential line where the free ends of the bent arm segments of the multiple limiting arms are located is smaller than the outer diameter of the valve core; and the first flow equalizing part is arranged on the bent arm segment. The end of the valve core corresponding to the valve hole is provided with a second flow equalizing part which is used for flow equalizing treatment of the refrigerant flowing through the liquid side of the valve core. The second flow equalizing part comprises a second flow equalizing plate body which is formed as a circular plate body and one side of the second flow equalizing plate body is fixed with the end of the valve core; the outer diameter of the second flow equalizing plate body is smaller than the inner diameter of the valve hole; and a second flow equalizing hole which is formed along the thickness direction of the second flow equalizing plate body. The application relates to a heat exchanger. The application relates to a heat exchanger. The application relates to a heat exchanger. ​ ​ 6. The header structure of claim 4, wherein ​ ​ ​ ​ 7. The header structure of any one of claims 1 to 6, wherein, ​ 8. The header structure of claim 7, wherein, ​ ​ ​ 9. A heat exchanger, characterized by ​ 10. A refrigeration appliance characterized in that, ​

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