Header structure, heat exchanger and refrigeration equipment

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a header structure. Each subset pipe is respectively connected with the main collecting pipe and the corresponding heat exchange unit and is used for communicating the main collecting pipe with the flow path of the heat exchange unit; wherein the one or more sub collecting pipes are connected with the main collecting pipe through a first connecting pipe in a bent state. According to the embodiment, the main collecting pipe and the sub collecting pipe are connected through the first connecting pipe in the bent state, so that the assembly connection of the large collecting pipe and the small collecting pipe at various installation positions can be adapted; in addition, through the specific bending configuration design of the first connecting pipe, the flow direction of the refrigerant flowing into the collecting pipe from the first connecting pipe can be changed, then the flow path resistance of the heat exchanger can be changed, and the sealing performance of the system is improved. 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, and particularly to a header structure, a heat exchanger, and a refrigeration device. Background Art

[0002] Conventional air conditioners mainly consist of components such as a compressor, an outdoor heat exchanger, a throttling device, and an indoor heat exchanger. And by using a four-way valve component, the switching of the refrigerant flow direction under two operating modes of refrigeration / heating can also be realized, so as to achieve the refrigeration function and heating function of the air conditioner. At the same time, for the existing heat exchanger structure form, the flow direction of the refrigerant through the heat exchanger is opposite under different operating modes, but the number of flow paths and the flow path length remain unchanged, which results in that the actual heat exchange efficiency in the refrigeration / heating mode cannot reach the optimal efficiency. In view of this situation, related technologies provide a variable flow-dividing heat exchanger, which can increase the number of flow paths when the heat exchanger is used as an evaporator and increase the flow path length when used as a condenser through valve control, so as to respectively improve the working efficiency in the refrigeration / heating mode.

[0003] Furthermore, for large-power air conditioner models, such as 3P and 4P air conditioners, the heat exchanger simultaneously includes dozens to hundreds of heat exchange tubes. Therefore, in related technologies, the heat exchanger is generally split into multiple heat exchange units in a variable flow-dividing form. Each heat exchange unit includes several heat exchange tubes and a small header connected to the heat exchange tubes. And the heat exchanger connects the small headers of each heat exchange unit through a large header, thereby forming the refrigerant flow path of the whole heat exchanger.

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

[0005] In related technologies, the large header and each small header are arranged side by side and welded and fixed through straight short connecting pipes. Due to the influence of factors such as the pipe length and pipe diameter of the large and small headers, the layout position between the small headers, and the space size of the heat exchanger, the above straight short connecting pipe form may have a situation where the installation of the large header and some small headers is restricted.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments, but rather serves as a preamble to the subsequent detailed description.

[0008] The present application provides a header structure, a heat exchanger and a refrigeration device, aiming to solve the problem of inconvenient installation of large and small headers caused by the connection method of the heat exchanger in the related art.

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

[0010] Main header;

[0011] A plurality of sub-manifolds, each of which is connected to the main manifold and a corresponding heat exchange unit, so as to connect the flow paths of the main manifold and the heat exchange unit;

[0012] One or more sub-pipes are connected to the main pipe via a first connecting pipe in a bent shape.

[0013] In some embodiments, the first connecting pipe has a first pipe end and a second pipe end, the first pipe end is connected to the main header, and the second pipe end is connected to the sub-header;

[0014] The port of the first pipe end is arranged in the same direction as the pipe length direction of the main pipe, and / or the port of the second pipe end is arranged in the same direction as the pipe length direction of the sub-pipe.

[0015] In some embodiments, the first connecting tube includes:

[0016] A first connecting section, one end of which is a first pipe end connected to the main header, and the other end of which is connected to the second connecting section;

[0017] A second connecting section, one end of which is a second pipe end connected to the sub-manifold, and the other end of which is connected to the first connecting section;

[0018] The first connecting section and the second connecting section are arranged at an angle.

[0019] In some embodiments, the angle α between the first connecting segment and the second connecting segment ranges from 45° to 135°.

[0020] In some embodiments, the first connecting section is vertically connected to a side wall of the main header, and the second connecting section is axially parallely connected to an end of the sub-header.

[0021] In some embodiments, the lengths of the plurality of sub-pipes are arranged sequentially along the same axis;

[0022] The first connecting pipe is connected to the sub-manifold located at the top position of the axis, or the first connecting pipe is connected to the sub-manifold located at the middle position of the axis.

[0023] In some embodiments, the first connecting section is connected to the end of the main header in an axially parallel manner, and the second connecting section is connected to the side tube wall of the sub-header in a perpendicular manner.

[0024] In some embodiments, the tube lengths of multiple sub-header tubes are arranged in sequence along the same axis;

[0025] The first connecting tube is connected to the sub-header tube located at the bottom position of the axis.

[0026] In some embodiments, the first connecting tube includes:

[0027] The first connecting section, one end of which is the first tube end connected to the main header tube, and the other end is connected to the third connecting section;

[0028] The second connecting section, one end of which is the second tube end connected to the sub-header tube, and the other end is connected to the third connecting section;

[0029] The third connecting section, which is connected between the first connecting section and the second connecting section;

[0030] Wherein, the third connecting section is arranged at an angle with the first connecting section and the second connecting section.

[0031] In some embodiments, the value range of the included angle β1 between the first connecting section and the third connecting section is 45° to 135°; and / or,

[0032] The value range of the included angle β2 between the second connecting section and the third connecting section is 45° to 135°.

[0033] In some embodiments, the first connecting section is axially parallelly connected to the end of the main header tube, and the second connecting section is axially parallelly connected to the end of the sub-header tube.

[0034] In some embodiments, the tube lengths of multiple sub-header tubes are arranged in sequence along the same axis;

[0035] The first connecting tube is connected to the sub-header tube located at the bottom position of the axis.

[0036] In some embodiments, the first connecting tube is configured as a U-shaped tube section.

[0037] In some embodiments, the center line distance L between the first tube end and the second tube end of the U-shaped tube section is 7 to 89 mm.

[0038] According to the embodiments of the second aspect of the present invention, there is also provided a heat exchanger, including:

[0039] The heat exchanger body; and,

[0040] The header tube structure as in any one of the embodiments of the first aspect above.

[0041] In some embodiments, the type of the heat exchanger is a variable flow splitting heat exchanger.

[0042] According to the embodiments of the third aspect of the present invention, there is also provided a refrigeration device, including:

[0043] The device main body; and,

[0044] The header structure in any of the embodiments of the first aspect as described above, or the heat exchanger in any of the embodiments of the second aspect as described above.

[0045] The header structure, heat exchanger and refrigeration device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0046] In this embodiment, the main header and the sub-header are connected by using the first connecting pipe in a bent shape, so as to adapt to the assembly connection of large and small headers in various installation positions; in addition, through the specific bending configuration design of the first connecting pipe, the flow direction of the refrigerant flowing into the header from the first connecting pipe can also be changed, thereby changing the flow path resistance of the heat exchanger and improving the sealing performance of the system.

[0047] The above general description and the following description are only exemplary and explanatory, and are not used to limit this application. Description of the Drawings

[0048] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0049] Figure 1a is a schematic diagram of a header structure provided by an embodiment of the present disclosure;

[0050] Figure 1b is an assembly schematic diagram of a header structure and a heat exchange unit provided by an embodiment of the present disclosure;

[0051] Figure 1c is Figure 1b a partial enlarged schematic diagram of part A in

[0052] Figure 2a is a schematic diagram of a header structure provided by another embodiment of the present disclosure;

[0053] Figure 2b is an assembly schematic diagram of a header structure and a heat exchange unit provided by another embodiment of the present disclosure;

[0054] Figure 2c is Figure 2b a partial enlarged schematic diagram of part B in

[0055] Figure 3a is a schematic diagram of a header structure provided by an embodiment of the present disclosure;

[0056] Figure 3b is an assembly schematic diagram of a header structure and a heat exchange unit provided by an embodiment of the present disclosure;

[0057] Figure 3c yes Figure 3b A partial enlarged schematic diagram of the middle C part;

[0058] Figure 4a is a schematic diagram of a header structure provided by yet another embodiment of the present disclosure;

[0059] Figure 4b is an assembly schematic diagram of a header structure and a heat exchange unit provided by another embodiment of the present disclosure;

[0060] Figure 4c yes Figure 4b A partial enlarged schematic diagram of the middle D part;

[0061] Figure 5a is a schematic diagram of a header structure provided by yet another embodiment of the present disclosure;

[0062] Figure 5b is an assembly schematic diagram of a header structure and a heat exchange unit provided by another embodiment of the present disclosure;

[0063] Figure 5c yes Figure 5b A partial enlarged schematic diagram of the middle E part;

[0064] Figure 6a It is a schematic diagram of a flow path of a heat exchanger provided by an embodiment of the present disclosure used as a condenser;

[0065] Figure 6b is a schematic diagram of a flow path of a heat exchanger provided by an embodiment of the present disclosure used as an evaporator;

[0066] Figure 7 It is a schematic diagram of a refrigeration device provided in one embodiment of the present disclosure.

[0067] Reference numerals:

[0068] 100, manifold structure; 110, main manifold; 120, sub-manifold; 130, first connecting pipe; 131, first connecting section; 132, second connecting section; 133, first connecting section; 134, second connecting section; 135, third connecting section; 140, second connecting pipe; 150, auxiliary sub-manifold;

[0069] 200, a conducting component; 210, a first conducting component; 220, a second conducting component;

[0070] 300. heat exchange unit;

[0071] 400, heat exchanger; 410, outdoor heat exchanger;

[0072] 500. Equipment body. DETAILED DESCRIPTION

[0073] In order to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0074] In the description of the embodiments of the present disclosure, the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so as to describe the embodiments of the present disclosure herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0075] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is 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 their implementations, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation. And, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0076] In addition, the terms "arranged", "connected", "fixed" should be understood in a broad sense. For example, "connected" may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0077] Unless otherwise specified, the term "plurality" means two or more.

[0078] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0079] The term "and / or" describes the associated relationship of objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0080] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0081] The present application provides a header structure 100, which can be applied to the heat exchanger 400 component of a refrigeration device, and specifically can be used to divide the refrigerant input from an external pipeline into multiple heat exchange tubes, or to converge the refrigerant in multiple heat exchange tubes and output it to the external pipeline, so as to achieve the functions of dividing / converging under different operating modes (refrigerant flow direction). Optionally, the types of the refrigeration device include but are not limited to air conditioners, refrigerators, freezers, etc. Correspondingly, the types of the specifically applied heat exchanger 400 include but are not limited to components that play a heat exchange role such as evaporators and condensers.

[0082] Combined with Figures 1a to 5c As shown, the embodiments of the present disclosure provide a header structure 100, which at least includes a main header 110 and a plurality of sub headers 120. Among them, the main header 110 is used to connect the external pipeline and the sub headers 120, and thus can realize the connection of the refrigerant flow path between the external pipeline and the sub headers 120. The sub headers 120 are used to correspondingly connect the heat exchange units 300 of the heat exchanger 400. Here, taking the finned tube heat exchanger 400 as an example, the heat exchange unit 300 is composed of one or more heat exchange tubes, and different heat exchange tubes of the heat exchange unit 300 are connected to the corresponding sub headers 120 in parallel, so that the refrigerant can flow between the sub headers 120 and the heat exchange tubes of the heat exchange unit 300. In this way, through the cooperation of the main header 110 and the sub headers 120, the flow path connection between the external pipeline and the heat exchange unit 300 can be realized.

[0083] In some embodiments, the axis of the main header 110 is parallel to the vertical direction, and the plurality of sub headers 120 are arranged adjacent to each other end to end along the same axis and this axis is also parallel to the vertical direction; at the same time, the axis of the main header 110 and the axis of the sub headers 120 are arranged at intervals. Therefore, in order to connect the main header 110 and the plurality of sub headers 120 to each other and overcome the influence of the installation space limitation, the main header 110 and the sub headers 120 are connected by a first connecting pipe 130, and the first connecting pipe 130 is in a bent shape, so that the refrigerant can flow from the axis where the main header 110 is located to the axis where the sub headers 120 are located, and the refrigerant can flow in the reverse direction.

[0084] In this embodiment, the main header 110 and the sub headers 120 are connected by using the bent first connecting pipe 130, so as to adapt to the assembly connection of large and small headers in various installation positions.

[0085] The following will, in conjunction with some specific embodiments, elaborate in detail on the specific configuration of the "first connecting pipe 130" in the present application.

[0086] Here, the first connecting pipe 130 has a first pipe end and a second pipe end. The first pipe end is used to connect to the main header 110, and the second pipe end is used to connect to the sub-header 120. Optionally, the port orientation of the first pipe end is set in the same direction as the pipe length direction of the main header 110, which can reduce the flow resistance when the refrigerant flows between the main header 110 and the first pipe end. Another option is that the port orientation of the second pipe end is set in the same direction as the pipe length direction of the sub-header 120. In this embodiment, the sub-header 120 is further provided with a conducting component 200, and this conducting component is a one-way conducting valve. The conducting direction of the one-way conducting valve is parallel to the pipe length direction of the sub-header 120. In this way, the flow direction of the refrigerant input from the second pipe end into the sub-header 120 is parallel to the axis of the one-way conducting valve, which can effectively improve the sealing effect of the one-way conducting valve.

[0087] Embodiment (1), in combination with Figure 1b 、 2b As shown in FIGS. 3a and 3b, a total of 3 heat exchange units 300 are provided in the figure, and each corresponds to a sub-header 120. One of the sub-headers 120 is connected to the corresponding heat exchange unit 300 through the first connecting pipe 130, and the remaining sub-headers 120 are connected to the corresponding heat exchange units 300 through the second connecting pipes 140.

[0088] Specifically, the overall outer contour of the first connecting pipe 130 is in an "L" shape, and it at least includes a first connecting section 131 and a second connecting section 132. Among them, the first connecting section 131 is the pipe section connected to the main header 110. This first connecting section 131 is configured as a straight pipe section, and one end thereof is the first pipe end connected to the main header 110, and the other end is connected to the second connecting section 132. Also, the second connecting section 132 is the pipe section connected to the sub-header 120. This first connecting section 131 is configured as a straight pipe section, and one end thereof is the second pipe end connected to the sub-header 120, and the other end is connected to the first connecting section 131. The structure of the first connecting pipe 130 in this form is relatively simple, reducing the processing technology difficulty and manufacturing cost.

[0089] In this way, the refrigerant input from the main header 110 enters the sub-header 120 after passing through the first connecting section 131 and the second connecting section 132 in sequence; and the refrigerant input from the sub-header 120 enters the main header 110 after passing through the second connecting section 132 and the first connecting section 131 in sequence.

[0090] In still some alternative embodiments, the first connecting section 131 may also be configured as an arc-shaped pipe section, a curved pipe section or other pipe types, and / or the second connecting section 132 may also be configured as an arc-shaped pipe section, a curved pipe section or other pipe types, which is not limited in this application.

[0091] In this embodiment, the first connecting section 131 and the second connecting section 132 are arranged at an angle. By using this angle, the flow direction of the refrigerant in the first connecting pipe 130 can be changed, so as to adapt to the spatial orientation of the main header 110 and the sub-header 120 to which it is connected. Optionally, the value range of the angle α between the first connecting section 131 and the second connecting section 132 is 45° to 135°. For example, the value of the angle α is 45°, 60°, 90°, 120° or 135°, etc. In Figure 1c and Figure 2c In the illustrated embodiment, the value of the angle α is 90°, that is, the first connecting section 131 and the second connecting section 132 are arranged perpendicular to each other.

[0092] In some embodiments of Embodiment (1), the first connecting section 131 of the first connecting pipe 130 is vertically connected to the side pipe wall of the main header 110, the second connecting section 132 is connected to the end of the sub-header 120 in an axial parallel manner, and the first connecting section 131 and the second connecting section 132 are arranged at a 90° angle.

[0093] Optionally, as Figures 1a to 1c shown, the sub-header 120 assembled with the first connecting pipe 130 is located at the top position of the axes of multiple sub-headers 120, and the second pipe end of the first connecting pipe 130 is axially parallel and docked to the top end of the sub-header 120. In this embodiment, since there is no other sub-header 120 above the sub-header 120, the installation of the first connecting pipe 130 will not be interfered by other sub-headers 120.

[0094] Another option is, as Figures 2a to 2c shown, the sub-header 120 assembled with the first connecting pipe 130 is located at the middle position of the axes of multiple sub-headers 120. The sub-header 120 is arranged at an interval from the adjacent sub-header 120 above it, so as to use the interval space above it as the accommodation space of the first connecting pipe 130, and there will be no spatial overlap interference between the first connecting pipe 130 and the sub-header 120 above it. At the same time, the second pipe end of the first connecting pipe 130 is axially parallel and docked to the top end of the sub-header 120.

[0095] In addition, in Figure 1c and Figure 2c the illustrated embodiments, the port orientation of the second pipe end and the pipe length direction of the sub-header 120 are the same, so as to reduce the adverse effect of the refrigerant flow direction input at the second pipe end on the conduction component and ensure the sealing effect of the conduction component.

[0096] In still some other embodiments of Embodiment (1), the first connection section 131 of the first connection pipe 130 is axially parallelly connected to the end of the main header 110, and the second connection section 132 is perpendicularly connected to the side wall of the sub-header 120. Moreover, the first connection section 131 and the second connection section 132 are arranged at a 90° angle.

[0097] Optionally, as Figures 3a to 3c shown, the sub-header 120 to which the first connection pipe 130 is assembled is located at the bottom position of the axes where multiple sub-headers 120 are located, and the second pipe end of the first connection pipe 130 is perpendicularly connected to the side pipe wall of this sub-header 120. Therefore, there is no spatial overlap between the second pipe section and another sub-header 120 adjacent above this sub-header 120, which also makes the installation of the first connection pipe 130 not affected by the interference of other sub-headers 120.

[0098] Embodiment (2), in combination with Figure 4b shown, a total of 3 heat exchange units 300 and their respective corresponding sub-headers 120 are provided in the figure. One of the sub-headers 120 is connected to the corresponding heat exchange unit 300 through the first connection pipe 130, and the remaining sub-headers 120 are connected to the corresponding heat exchange units 300 through the second connection pipes 140.

[0099] Specifically, the overall outer contour of the first connection pipe 130 is approximately "Z" - shaped, and it at least includes a first connection pipe section 133, a second connection pipe section 134, and a third connection pipe section 135, as Figure 4a and 4c shown. Among them, the first connection pipe section 133 is the pipe section connected to the main header 110. This first connection pipe section 133 is configured as a straight pipe section, and one of its ends is the first pipe end connected to the main header 110, and the other end is connected to the second connection pipe section 134. And, the second connection pipe section 134 is the pipe section connected to the sub-header 120. This first connection pipe section 133 is configured as a straight pipe section, one of its ends is the second pipe end connected to the sub-header 120, and the other end is connected to the first connection pipe section 133. And, the third connection pipe section 135 is the intermediate pipe section connecting the first connection pipe section 133 and the second connection pipe section 134. This third connection pipe section 135 is configured as a straight pipe section, and its two ends are respectively connected to the first connection pipe section 133 and the second connection pipe end. The first connection pipe 130 in this form has a simple structure, low processing technology difficulty and manufacturing cost.

[0100] In this way, the refrigerant input from the main header 110 sequentially passes through the first connection pipe section 133, the third connection pipe section 135, and the second connection pipe section 134 and then enters the sub-header 120; and, the refrigerant input from the sub-header 120 sequentially passes through the second connection pipe section 134, the third connection pipe section 135, and the first connection pipe section 133 and then enters the main header 110.

[0101] In still other alternative embodiments, the first connecting pipe section 133 may also be configured as an arc-shaped pipe section, a curved pipe section or other pipe types, and / or the second connecting pipe section 134 may also be configured as an arc-shaped pipe section, a curved pipe section or other pipe types, and / or the third connecting pipe section 135 may also be configured as an arc-shaped pipe section, a curved pipe section or other pipe types. The present application does not limit this.

[0102] In this embodiment, the third connecting pipe section 135 and the first connecting pipe section 133 are arranged at an angle, and the third connecting pipe section 135 and the first connecting pipe section 133 are also arranged at an angle. In this way, the first connecting pipe 130 can change the refrigerant flow direction twice through the two angles, thereby adapting to the spatial orientation of the main header 110 and the sub-header 120 to which it is connected.

[0103] As Figure 4c shown, optionally, the value range of the angle β1 between the first connecting pipe section 133 and the third connecting pipe section 135 is 45° to 135°. For example, the value of the angle β1 is 45°, 60°, 90°, 120° or 135°, etc. Another option is that the value range of the angle β2 between the second connecting pipe section 134 and the third connecting pipe section 135 is 45° to 135°. For example, the value of the angle β2 is 45°, 60°, 90°, 120° or 135°, etc. In Figure 4c the shown embodiment, the values of both the angle β1 and the angle β2 are 90°, that is, the third connecting pipe section 135 is perpendicular to the first connecting pipe section 133 and the second connecting pipe section 134, and the axes of the first connecting pipe section 133 and the second connecting pipe end are parallel.

[0104] In some embodiments, the first connecting pipe section 133 is axially parallelly connected to the end of the main header 110, and the second connecting pipe section 134 is axially parallelly connected to the end of the sub-header 120. In this way, the refrigerant does not change direction at the connection positions of the first connecting pipe 130 with the main header 110 and the sub-header 120, improving the smoothness of the refrigerant flow.

[0105] Optionally, as Figure 4b shown, the sub-header 120 to which the first connecting pipe 130 is assembled is located at the bottom position of the axes of the plurality of sub-headers 120, and the sub-header 120 is spaced from the adjacent upper sub-header 120 above it, so as to use the spaced space above it as the accommodation space for the first connecting pipe 130. The second connecting pipe section 134 and part of the third connecting pipe section 135 of the first connecting pipe 130 are accommodated in this accommodation space. This part of the pipe section of the first connecting pipe 130 does not overlap with another adjacent sub-header 120 above the sub-header 120, and the interference between the two is small.

[0106] Embodiment (III), in combination with Figure 5bAs shown in the figure, a total of three heat exchange units 300 and their respective corresponding sub-header pipes 120 are provided. One of the sub-header pipes 120 is connected to the corresponding heat exchange unit 300 through the first connecting pipe 130, and the remaining sub-header pipes 120 are connected to the corresponding heat exchange unit 300 through the second connecting pipe 140.

[0107] Specifically, as Figure 5a and 5c shown, the overall outer contour of the first connecting pipe 130 is a "U"-shaped pipe section, which at least includes a first arm pipe and a second arm pipe. The first arm pipe and the second arm pipe are parallel and the free ends face the same direction. Among them, the first arm pipe is the pipe section for connecting to the main header pipe 110, and the second arm pipe is the pipe section for connecting to the sub-header pipe 120. In this embodiment, the "U"-shaped pipe section can be used to achieve smooth deflection of the refrigerant when flowing between the main header pipe 110 and the sub-header pipe 120.

[0108] Optionally, as Figure 5b shown, the sub-header pipe 120 to which the first connecting pipe 130 is assembled is located at the top position of the axes of the plurality of sub-header pipes 120. There is no other sub-header pipe 120 in the space above the sub-header pipe 120, so that the installation of the first connecting pipe 130 does not interfere with other sub-header pipes 120.

[0109] Another option is that the center line distance L between the first pipe end and the second pipe end of the "U"-shaped pipe section ranges from 7 to 89 mm. By limiting the "U"-shaped pipe section within the above size range, the space size of the heat exchange unit 300 and the heat exchanger 400 can be optimized, and the pipe resistance of the refrigerant in the "U"-shaped pipe section can be avoided from being too large.

[0110] In the multiple embodiments shown above, generally, the pipe diameter of the first connecting pipe 130 is smaller than the pipe diameters of the main header pipe 110 and the sub-header pipe 120. Based on the "Venturi effect", the flow rate of the refrigerant in the first connecting pipe 130 can be increased, thereby accelerating the flow of the refrigerant between the main header pipe 110 and the sub-header pipe 120.

[0111] Another option is that for the heat exchanger 400 form with three or more heat exchange units 300 (and sub-header pipes 120), the number of sub-header pipes 120 to which the first connecting pipe 130 is applied is one or more, such as 1, 2, 3, etc.; and, the number of sub-header pipes 120 to which the second connecting pipe 140 is applied is one or more, such as 1, 2, 3, etc. The specific setting numbers of the first connecting pipe 130 and the second connecting pipe 140 can be flexibly selected according to the assembly needs, and this application does not limit this.

[0112] In some embodiments, the diameter of the first connecting pipe 130 is equal to that of the second connecting pipe 140. In still other embodiments, the diameter of the first connecting pipe 130 is greater than that of the second connecting pipe 140. Since the first connecting pipe 130 is not a straight pipe in the previous embodiments, the resistance of the first connecting pipe 130 is greater than that of the second connecting pipe 140 under the same pipe length. Therefore, in order to ensure the uniformity of refrigerant flow distribution, the diameter of the first connecting pipe 130 in this embodiment is larger, so as to increase the amount of refrigerant it diverts and compensate for the inhibitory effect of its pipe resistance on the refrigerant flow rate.

[0113] As Figure 1b , 2b , 3b, 4b, and 5b show, the present application also discloses a heat exchanger 400, which can be used to achieve heat exchange between the refrigerant and its surrounding environment. Optionally, the type of the heat exchanger 400 includes but is not limited to finned-tube heat exchangers, parallel-flow heat exchangers, microchannel heat exchangers, etc.

[0114] Specifically, the heat exchanger 400 includes a heat exchanger body, a header structure 100, and a plurality of heat exchange units 300. The header structure 100 is the header structure 100 shown in the previous embodiments, and each heat exchange unit 300 is correspondingly connected to a sub-header 120 of the header structure 100, and each sub-header 120 is commonly connected to the main header 110.

[0115] Optionally, the number of the above-mentioned header structures 100 provided in the heat exchanger 400 is one, which is arranged on the air inlet (liquid outlet) side of the heat exchanger 400, or on the air outlet (liquid inlet) side of the heat exchanger 400. Another option is that the number of the above-mentioned header structures 100 provided in the heat exchanger 400 is two, which are distributively arranged on the air inlet (liquid outlet) side of the heat exchanger 400 and the air outlet (liquid inlet) side of the heat exchanger 400.

[0116] In some embodiments, the heat exchanger 400 is of the type with a conventional heat exchange flow path. Specifically, the plurality of heat exchange units 300 and their corresponding sub-headers 120 included therein are all constructed in the form of a conventional heat exchange flow path, that is, in the refrigeration / heating two operating modes, when the refrigerant flows through this conventional heat exchange flow path, the number of flow paths and the path length remain unchanged, only the flow direction is opposite.

[0117] In still other embodiments, the heat exchanger 400 is of the variable flow distribution heat exchanger 400 type. Specifically, one or more groups of heat exchange units 300 and their sub-headers 120 are constructed in the form of a variable flow distribution flow path. Here, in the previous Figure 1bTaking the embodiment shown in the figure as an example, there are 4 groups of heat exchange tubes (marked as a, b, c, and d respectively) arranged from top to bottom in the heat exchange unit 300 at the topmost space in the figure. The left ports of each heat exchange tube are connected to the front header structure 100, and the right ports are connected to the sub-header 150. A first conduction component 210 is provided in the sub-header 120. The conduction direction of the first conduction component 210 is configured in a one-way conduction form that conducts when the refrigerant flows upward from bottom to top and blocks when it flows downward from top to bottom. And a second conduction component 220 is provided in the sub-header 150. The conduction direction of the second conduction component 220 is configured in a one-way conduction form that conducts when the refrigerant flows upward from bottom to top and blocks when it flows downward from top to bottom. Among them, the left ports of the heat exchange tubes a and b are located above the first conduction component 210, and the right ports are located above the first conduction component 210. The left port of the heat exchange tube c is located below the first conduction component 210, and the right port is located above the second conduction component 220. The left port of the heat exchange tube d is located below the first conduction component 210, and the right port is located below the second conduction component 220.

[0118] In this way, when the heat exchanger 400 is used as a condenser, as Figure 6a shown, the refrigerant flows through the heat exchange unit 300 from left to right in the direction shown by the arrow. The actual number of branch flow paths of the heat exchange unit 300 decreases, and the refrigerant flow path extends, so as to improve the condensation effect on the gaseous refrigerant. And when the heat exchanger 400 is used as an evaporator, as Figure 6b shown, the refrigerant flows through the heat exchange unit 300 from right to left in the direction shown by the arrow. The number of branch flow paths of the heat exchange unit 300 is large, so as to enhance the evaporation and heat absorption effect on the liquid refrigerant.

[0119] Optionally, one or more of the heat exchange units 300 of the heat exchanger 400 are configured in a conventional heat exchange flow path form, and one or more other heat exchange units 300 are configured in a variable split flow path form. Here, the specific number of the heat exchange units 300 in the conventional heat exchange flow path form and the heat exchange units 300 in the variable split flow path form can be adjusted according to actual needs, and this application does not limit this.

[0120] In still some other embodiments, the present application also discloses a refrigeration device. Optionally, the type of the refrigeration device includes but is not limited to air conditioners, refrigerators, freezers, etc.

[0121] Specifically, the refrigeration device includes a device main body 500 and a header structure 100 shown in the foregoing embodiments, or a heat exchanger 400 shown in the foregoing embodiments. Taking the air conditioner as an example of the type of the refrigeration device, the heat exchanger 400 can be the outdoor heat exchanger 410 of its outdoor unit, as Figure 7As shown, and / or, it is the indoor heat exchanger 400 of its indoor unit. The refrigeration equipment adopts the header structure 100 and the heat exchanger 400 shown in the above embodiments, reduces the process difficulty in the production and manufacturing process, is suitable for the flexible assembly of the relevant functional components of the heat exchanger 400, and reduces the restrictive influence of the structural dimensions of the header components, etc.

[0122] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. Embodiments only represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A header structure, characterized in that: include: Main header (110); A plurality of sub-manifolds (120), each sub-manifold (120) being connected to the main manifold (110) and a corresponding heat exchange unit, so as to connect the flow paths of the main manifold (110) and the heat exchange unit; One or more sub-pipelines (120) are connected to the main pipe (110) via a first connecting pipe (130) in a bent shape.

2. The header structure according to claim 1, characterized in that: The first connecting pipe (130) has a first pipe end and a second pipe end, the first pipe end is connected to the main header (110), and the second pipe end is connected to the sub-header (120); The port of the first pipe end is arranged in the same direction as the pipe length direction of the main pipe (110), and / or the port of the second pipe end is arranged in the same direction as the pipe length direction of the sub-pipe (120).

3. The header structure according to claim 2, characterized in that: The first connecting pipe (130) comprises: A first connecting section (131), one end of which is a first pipe end connected to the main header (110), and the other end of which is connected to the second connecting section (132); A second connecting section (132), one end of which is a second pipe end connected to the sub-manifold (120), and the other end of which is connected to the first connecting section (131); Wherein, the first connecting section (131) and the second connecting section (132) are arranged at an angle.

4. The header structure according to claim 3, characterized in that: The value range of the included angle α between the first connecting section (131) and the second connecting section (132) is 45° to 135°.

5. The header structure according to claim 3 or 4, characterized in that: The first connecting section (131) is vertically connected to the side tube wall of the main header (110), and the second connecting section (132) is axially parallely connected to the end of the sub-header (120).

6. The header structure according to claim 5, characterized in that: The lengths of the plurality of sub-pipes (120) are arranged in sequence along the same axis; The first connecting pipe (130) is connected to the sub-manifold (120) located at the top position of the axis, or the first connecting pipe (130) is connected to the sub-manifold (120) located at the middle position of the axis.

7. The header structure according to claim 3 or 4, characterized in that: The first connecting section (131) is axially parallely connected to the end of the main header (110), and the second connecting section (132) is vertically connected to the side tube wall of the sub-header (120).

8. The header structure according to claim 7, characterized in that: The lengths of the plurality of sub-pipes (120) are arranged in sequence along the same axis; The first connecting pipe (130) is connected to the sub-manifold (120) located at the bottom of the axis.

9. The header structure according to claim 2, characterized in that: The first connecting pipe (130) comprises: A first pipe section (133), one end of which is a first pipe end connected to the main header (110), and the other end of which is connected to a third pipe section (135); A second pipe section (134), one end of which is a second pipe end connected to the sub-manifold (120), and the other end of which is connected to the third pipe section (135); A third pipe section (135), connected between the first pipe section (133) and the second pipe section (134); The third connecting pipe section (135) is arranged at an angle with the first connecting pipe section (133) and the second connecting pipe section (134).

10. The header structure according to claim 9, characterized in that: The value range of the angle β1 between the first connecting pipe section (133) and the third connecting pipe section (135) is 45° to 135°; and / or, The value range of the included angle β2 between the second connecting pipe section (134) and the third connecting pipe section (135) is 45° to 135°.

11. The header structure according to claim 9 or 10, characterized in that: The first connecting pipe section (133) is axially connected to the end of the main header (110) in parallel, and the second connecting pipe section (134) is axially connected to the end of the sub-header (120) in parallel.

12. The header structure according to claim 11, characterized in that: The lengths of the plurality of sub-pipes (120) are arranged in sequence along the same axis; The first connecting pipe (130) is connected to the sub-manifold (120) located at the bottom of the axis.

13. The header structure according to claim 2, characterized in that: The first connecting pipe (130) is constructed as a U-shaped pipe section.

14. The header structure according to claim 13, characterized in that: The centerline distance L between the first pipe end and the second pipe end of the U-shaped pipe section is 7 to 89 mm.

15. A heat exchanger, characterized in that: include: Heat exchanger body; and, The header structure (100) according to any one of claims 1 to 14.

16. The heat exchanger according to claim 15, characterized in that The type of heat exchanger (400) is a variable split flow heat exchanger.

17. A refrigeration device, characterized in that: include: Equipment body; as well as, The header structure (100) according to any one of claims 1 to 14, or the heat exchanger (400) according to claim 15 or 16.

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