Header structure, heat exchanger and refrigeration equipment
By adopting a weldless integrated main header and sub-header structure in the heat exchanger, the problem of reducing refrigerant sealing caused by the many welds in the header structure is solved, and higher safety and stability are achieved.
Patent Information
- Application Number
- CN202421815643.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The number of welds in the header structure of existing heat exchangers has a large number of welds, which leads to a decrease in the sealing of refrigerant and may cause refrigerant leakage.
The integrated main main pipe and sub-collection tube structure is adopted without welds. Some pipe sections of the main pipe are used as sub-collection tubes to connect heat exchange units to reduce the overall number of welds.
It effectively reduces the possibility of refrigerant leakage and improves the safety and stability of the use of air conditioners.
Smart Images
Figure CN222993249U_ABST
Abstract
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 the actual heat exchange efficiency of the refrigeration / heating mode not reaching the optimal efficiency. In view of this situation, the related art provides a variable flow splitting 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 of the refrigeration / heating mode.
[0003] Furthermore, for high-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 the related art, the heat exchanger is generally split into multiple variable flow splitting heat exchange units. 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 the related art:
[0005] In the related art, the large header and each small header are fixed by welding with short connecting pipes with small diameters, which results in a large number of welds between the large header and the small header and a decrease in sealing performance. After long-term use, the problem of refrigerant leakage may occur.
[0006] It should be noted that the information disclosed in the above background art section is only used to strengthen 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. Utility Model Content
[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 preface 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 that the number of seams between the headers of the heat exchanger in the related art affects the refrigerant sealing performance.
[0009] According to an embodiment of the first aspect of the present invention, there is provided a manifold structure, including:
[0010] A main manifold having a main pipe section and a first sub-manifold formed by shaping a part of the pipe body of the main pipe section, the first sub-manifold being used to connect the main pipe section and the flow path of the first heat exchange unit;
[0011] A second sub-manifold respectively connected to the main pipe section and the second heat exchange unit, and used to connect the main pipe section and the flow path of the second heat exchange unit.
[0012] In some embodiments, the first sub-manifold is formed by reversely bending the top pipe body of the main pipe section, and the first sub-manifold after bending is arranged parallel to the axis of the main pipe section.
[0013] In some embodiments, the first sub-manifold includes:
[0014] A sub-manifold main section connected to the first heat exchange unit;
[0015] A sub-manifold bending section configured as a U-shaped pipe section, with one end connected to the top end of the sub-manifold main section and the other end connected to the top end of the main pipe section.
[0016] In some embodiments, the pipe lengths of the first sub-manifold and the second sub-manifold are arranged in sequence along the same axis, and the first sub-manifold is located at the top position of the second sub-manifold.
[0017] In some embodiments, the first sub-manifold is formed by bending the bottom pipe body of the main pipe section in the same direction and obliquely, and the first sub-manifold after bending is arranged parallel to the axis of the main pipe section.
[0018] In some embodiments, the first sub-manifold includes:
[0019] A sub-manifold main section connected to the first heat exchange unit;
[0020] A sub-manifold bending section configured as an inclined pipe section forming an angle with the vertical direction, with one end connected to the top end of the sub-manifold main section and the other end connected to the bottom end of the main pipe section.
[0021] In some embodiments, the pipe lengths of the first sub-manifold and the second sub-manifold are arranged in sequence along the same axis, and the first sub-manifold is located at the bottom position of the second sub-manifold.
[0022] In some embodiments, the first sub-manifold is formed by bending the middle pipe body of the main pipe section with a dislocation protrusion, and the first sub-manifold after bending is arranged parallel to the axis of the main pipe section.
[0023] In some embodiments, the number of the second sub-manifolds is two or more;
[0024] The tube lengths of the first sub-header and the second sub-header are arranged in sequence along the same axis, and the first sub-header is located at the middle position between two adjacent second sub-headers.
[0025] In some embodiments, the diameters of the main tube section and the first sub-header are equal;
[0026] And / or, the diameters of the first sub-header and the second sub-header are equal.
[0027] In some embodiments, the tube lengths of the first sub-header and the second sub-header are equal.
[0028] According to an embodiment of the second aspect of the present invention, there is also provided a heat exchanger, including:
[0029] A header structure as in any one of the embodiments of the first aspect above;
[0030] A first heat exchange unit and a second heat exchange unit, wherein the first heat exchange unit is connected to the first sub-header, and the second heat exchange unit is connected to the second sub-header.
[0031] In some embodiments, when the heat exchanger is used as a condenser, the header structure is arranged on the air inlet side of the heat exchanger.
[0032] In some embodiments, the first heat exchange unit and the first sub-header are configured in a variable flow splitting form;
[0033] And / or, the second heat exchange unit and the second sub-header are configured in a variable flow splitting form.
[0034] According to an embodiment of the third aspect of the present invention, there is also provided a refrigeration device, including:
[0035] A device main body; and,
[0036] A header structure as in any one of the embodiments of the first aspect above, or a heat exchanger as in any one of the embodiments of the second aspect above.
[0037] The header structure, heat exchanger and refrigeration device provided by the embodiments of the present disclosure can achieve the following technical effects:
[0038] In this embodiment, some pipe sections of the main header are used as one or more sub-headers. Since the main header and the sub-header are of a seamless integrated structure, this structural form can effectively reduce the number of welds of the overall heat exchanger, thereby effectively reducing the possibility of refrigerant leakage and increasing the use safety and stability of the air conditioner.
[0039] 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
[0040] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation 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 wherein:
[0041] Figure 1a is a schematic diagram of a header structure provided by an embodiment of the present disclosure;
[0042] Figure 1b is an assembly schematic diagram of a header structure and a heat exchange unit provided by an embodiment of the present disclosure;
[0043] Figure 1c is Figure 1b a partial enlarged schematic diagram of part A in
[0044] Figure 2a is a schematic diagram of a header structure provided by another embodiment of the present disclosure;
[0045] Figure 2b is an assembly schematic diagram of a header structure and a heat exchange unit provided by another embodiment of the present disclosure;
[0046] Figure 2c is Figure 2b a partial enlarged schematic diagram of part B in
[0047] Figure 3a is a schematic diagram of the flow path of a heat exchanger used as a condenser according to an embodiment of the present disclosure;
[0048] Figure 3b is a schematic diagram of the flow path of a heat exchanger used as an evaporator according to an embodiment of the present disclosure;
[0049] Figure 4 is a schematic diagram of a refrigeration device provided by an embodiment of the present disclosure.
[0050] Reference numerals:
[0051] 100, header structure; 110, main header; 111, main pipe section; 120, first sub-header; 121, main sub-header section; 122, sub-header bending section; 130, second sub-header; 140, first auxiliary sub-header;
[0052] 200, conduction component; 210, first conduction component; 220, second conduction component;
[0053] 310, first heat exchange unit; 320, second heat exchange unit;
[0054] 400, heat exchanger; 410, outdoor heat exchanger;
[0055] 500, equipment main body. Detailed implementation manners
[0056] In order to more comprehensively understand the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present disclosure. In the following technical descriptions, for the sake of explanation, multiple 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 shown in a simplified manner to simplify the drawings.
[0057] In the description of the embodiments of the present disclosure, terms such as "first" and "second" 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 can be interchanged under appropriate circumstances so as to describe the embodiments of the present disclosure here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.
[0058] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "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 embodiments, 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 used to represent the 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.
[0059] In addition, the terms "arranged", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can 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.
[0060] Unless otherwise specified, the term "plurality" means two or more.
[0061] In the embodiments of the present disclosure, the character " / " indicates that the front and rear objects are in an "or" relationship. For example, A / B means: A or B.
[0062] The term "and / or" describes the association relationship of an object, 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.
[0063] 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.
[0064] The present application provides a header structure 100, which can be applied to the heat exchanger component of a refrigeration device, and specifically can be used to achieve the diversion of the refrigerant input from an external pipeline into a plurality of heat exchange tubes, or, the convergence of the refrigerant in a plurality of heat exchange tubes and the output to an external pipeline, so as to play the function of diversion / convergence in 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 specific heat exchanger 400 applied include but are not limited to components that play a heat exchange role such as evaporators and condensers.
[0065] Combined Figures 1a to 2c As shown, the embodiments of the present disclosure provide a header structure 100, which at least includes a main header 110 and sub headers. Among them, the main header 110 is used to connect the external pipeline and the sub headers, and thus can realize the connection of the refrigerant flow path between the external pipeline and the sub headers. The sub headers are used to correspondingly connect the heat exchange units of the heat exchanger. The sub headers at least include a first sub header 120 and a second sub header 130. Here, taking a finned tube heat exchanger as an example, the heat exchange unit is composed of one or more heat exchange tubes, and different heat exchange tubes of the heat exchange unit are connected in parallel to the corresponding sub headers, so that the refrigerant can flow between the sub headers and the heat exchange tubes of the heat exchange unit. In this way, through the cooperation of the main header 110 and the sub headers, the connection of the flow path between the external pipeline and the heat exchange unit can be realized.
[0066] In some alternative embodiments, the main header 110 includes a main pipe section 111 and a first sub header 120. Among them, the main pipe section 111 is the main pipe section part of the main header 110, which has an external connection port for connecting the external pipeline, and the refrigerant can flow into the main pipe section 111 from the external connection port, or, the refrigerant in the main pipe section 111 flows out from the external connection port; and, the first sub header 120 is correspondingly connected to a first heat exchange unit 310, which can be used to connect the flow paths of the main pipe section 111 and the first heat exchange unit 310. In this embodiment, the first sub header 120 is formed by a part of the pipe body of the main pipe section 111, that is, the main pipe section 111 and the first sub header 120 are substantially an integral structure, and the first sub header 120 itself is one of the components of the main pipe section 111.
[0067] Therefore, since the main header 110 and the first sub-header 120 are of a seamless one-piece structure, different from the form in the related art where the main header 110 and other sub-headers are designed separately and fixed by welding, this structural form in this embodiment can effectively reduce the number of welds in the overall heat exchanger, thereby effectively reducing the probability of refrigerant leakage from the welds, and greatly increasing the use safety and stability of the air conditioner.
[0068] Next, in combination with some specific embodiments, the specific configuration of the "main header 110" in this application will be described in detail.
[0069] Here, the main pipe section 111 of the main header 110 is arranged on the heat exchanger 400 with its axis parallel to the vertical direction. Along the pipe length direction, the main pipe section 111 can be roughly divided into a top pipe body, a middle pipe body, and a bottom pipe body. In the embodiment, the first sub-header 120 can be formed by any one of the top pipe body, the middle pipe body, and the bottom pipe body, and the specific selection can be adjusted according to the actual design requirements of the heat exchanger 400. This application does not limit this.
[0070] Embodiment (1), in combination with Figures 1a to 1c As shown, the first sub-header 120 is formed by bending the top pipe body of the main pipe section 111 in the reverse direction. In this embodiment, the first sub-header 120 is formed by bending the top pipe body 180° relative to the main pipe section 111, so that the axis of the bent first sub-header 120 is parallel to the axis of the main pipe section 111. In this way, the axis of the first sub-header 120 is also parallel to the vertical direction to ensure the uniformity of the refrigerant flow from the first sub-header 120 to the multiple heat exchange tubes of its corresponding first heat exchange unit 310. In addition, in this embodiment, the first sub-header 120 is also provided with a conduction component 200, and the conduction component 200 is a one-way conduction valve. The conduction direction of the one-way conduction valve is parallel to the pipe length direction of the first sub-header 120. Therefore, arranging the first sub-header 120 in the vertical direction can also make the gravity direction of the valve core of the one-way conduction valve parallel to the conduction direction, thereby enhancing the sealing performance of the one-way conduction valve.
[0071] For the first sub-header 120 in this embodiment, the refrigerant inflow direction is from the top of the first sub-header 120 vertically downward into the pipe body (the pipe section actually connected to the heat exchange unit), and the refrigerant outflow direction is from the pipe body of the first sub-header 120 vertically upward and out from the top. This can also make the refrigerant flow direction parallel to the conduction direction of the aforementioned conduction component, and can also play the role of improving the sealing performance of the one-way conduction component.
[0072] Specifically, as Figure 1cAs shown, the first subset pipe 120 includes a subset pipe main section 121 (the pipe section actually docked with the heat exchange unit) and a subset pipe bending section 122. Among them, the subset pipe main section 121 is the pipe section connected to the first heat exchange unit 310, which is configured as a straight pipe section and the axis of the subset pipe main section 121 is parallel to the vertical direction; one or more refrigerant flow holes are opened along the pipe length direction on the side wall of the subset pipe main section 121, and one or more heat exchange pipes of the first heat exchange unit 310 are in one-to-one correspondence and communication with the refrigerant flow holes. In addition, the subset pipe bending section 122 is configured as a U-shaped pipe section, one end of which is connected to the top end of the subset pipe main section 121, and the other end is connected to the top end of the main pipe section 111 of the main header 110. The U-shaped pipe section can achieve the effect of smooth refrigerant direction change, effectively reducing the refrigerant pressure loss caused by the direction change.
[0073] Optionally, the subset pipe bending section 122 can also be other regular or irregular arc-shaped pipe sections, and the present application does not limit this.
[0074] Another option is that the two ends of the subset pipe bending section 122 are respectively tangent to the axes of the subset pipe main section 121 and the main pipe section 111, which can reduce the flow resistance at the connection positions of the subset pipe bending section 122 with the subset pipe main section 121 and the main pipe section 111, and further improve the smoothness of the refrigerant flow between the main pipe section 111 and the subset pipe main section 121.
[0075] In the embodiment, the pipe lengths of the first subset pipe 120 and the second subset pipe 130 are arranged along the same axis, as Figure 1b shown, the subset pipe at the top position is the first subset pipe 120, and the two subset pipes below it are the second subset pipes 130. In this embodiment, in order to improve the compactness of the heat exchanger structure and reduce the overall space occupied by the heat exchanger, multiple subset pipes are assembled in a way that they abut against each other end to end along the axis. In this case, setting the first subset pipe 120 at the top position can avoid structural interference between its bending part (subset pipe bending section 122) and other second subset pipes 130, so as to achieve the smooth assembly of each body component; in addition, the first subset pipe 120 adopts the top inlet and outlet form, which is also to ensure its cooperation with the one-way conduction direction of the aforementioned conduction component 200 to realize the variable shunt flow path form of the first heat exchange unit 310.
[0076] Embodiment (2), in combination with Figures 2a to 2cAs shown, the first sub-manifold 120 is formed by bending the bottom tube of the main tube section 111 in the same direction. In this embodiment, the first sub-manifold 120 is formed by extending the bottom tube relative to the main tube toward the heat exchange unit, and the inclined first sub-manifold 120 is also parallel to the axial direction of the main tube section 111. Therefore, in this embodiment, the first sub-manifold 120 is parallel to the vertical direction, which can also play a role in ensuring the uniformity of the refrigerant diversion and enhancing the sealing of the conductive components.
[0077] For the first sub-manifold 120 in this embodiment, the first sub-manifold 120 is connected to the bottom end of the main pipe section 111 of the main manifold 110 through its top end, so the refrigerant inflow direction is vertically downward from the top end of the first sub-manifold 120 into the pipe body (the pipe section actually connected to the heat exchange unit), and the refrigerant outflow direction is vertically upward from the top end of the pipe body of the first sub-manifold 120. Therefore, the refrigerant flow direction in this embodiment is also parallel to the conduction direction of the aforementioned conduction component 200, which also has the effect of improving the sealing performance of the conduction component.
[0078] Specifically, if Figure 2c As shown, the first sub-manifold 120 includes a sub-manifold main section 121 (a pipe section actually connected to the heat exchange unit) and a sub-manifold bending section 122. The sub-manifold main section 121 is a pipe section connected to the first heat exchange unit 310, which is constructed as a straight pipe section and the axial direction of the sub-manifold main section 121 is parallel to the vertical direction; and, one or more refrigerant flow holes are opened on the side wall of the sub-manifold main section 121 along the pipe length direction, and one or more heat exchange tubes of the first heat exchange unit 310 are connected to the refrigerant flow holes one by one. And, the sub-manifold bending section 122 is constructed as an inclined pipe section at an angle to the vertical, one end of which is connected to the top of the sub-manifold main section 121, and the other end is connected to the bottom end of the main pipe section 111 of the main manifold 110; similar to the previous embodiment, the sub-manifold bending section 122 can also achieve the technical effects of smooth deformation of the refrigerant and reduction of pipeline resistance and pressure loss.
[0079] Optionally, the sub-manifold bending section 122 may be an inclined straight tube, an arc-shaped tube, or other regular or irregular tube sections.
[0080] In an embodiment, Figure 2cAs shown, the included angle between the bent section 122 of the subset pipe and the main pipe section 111 is an obtuse angle, and the value of the included angle γ1 between the two is greater than 90° and less than 180°. Optionally, the value of the included angle γ1 includes, but is not limited to, 120°, 135°, 160°, and so on. Also, since the main pipe section 111 and the main section 121 of the subset pipe are parallel to each other, the included angle between the main section 121 of the subset pipe and the bent section 122 of the subset pipe is also an obtuse angle. In this embodiment, the bent section 122 of the subset pipe is described as a straight pipe, so that the included angle γ2 between the main section 121 of the subset pipe and the bent section 122 of the subset pipe is equal to the value of the included angle γ1.
[0081] Similar to the previous embodiment, the pipe lengths of the first subset pipe 120 and the second subset pipe 130 are arranged along the same axis. In this embodiment, Figure 2b As shown, the subset pipe at the bottom position is the first subset pipe 120, and the two subset pipes above it are the second subset pipes 130. In this embodiment, in order to avoid structural interference between the first subset pipe 120 and the second subset pipe 130 adjacent to its upper part, the first subset pipe 120 and the adjacent second subset pipe 130 are arranged at intervals, so that there is an interval space between the top end of the first subset pipe 120 and the bottom end of the second subset pipe 130, and the bent section 122 of the subset pipe can be connected to the main section 121 of the subset pipe through this interval space. In this embodiment, the first subset pipe 120 adopts the form of inlet and outlet at the top end, which is also to ensure its cooperation with the one-way conduction direction of the aforementioned conduction component 200 to realize the variable switching of the flow path of the first heat exchange unit 310.
[0082] In an embodiment (three) not shown in the drawings, the first subset pipe 120 is formed by bending and protruding the middle pipe body of the main pipe section 111 in a staggered manner. In this embodiment, the middle pipe body is not limited to the pipe section at the center point position of the main pipe section 111, and it can also be a partial pipe section of the pipe body near the top or bottom of the main pipe section 111. In this embodiment, the first subset pipe 120 is formed by protruding the middle pipe body relative to the main pipe body towards the heat exchange unit side in a staggered manner, and the pipe body of the protruding part is parallel to the axis of the main pipe section 111, which also plays a role in ensuring the uniformity of refrigerant flow distribution and enhancing the sealing performance of the conduction component 200.
[0083] Specifically, the first sub-header pipe 120 includes a main section 121 of the sub-header pipe, a first bent section of the sub-header pipe, and a second bent section of the sub-header pipe. Among them, the main section 121 of the sub-header pipe is a pipe section connected to the first heat exchange unit 310, which is configured as a straight pipe section and the axis of the main section 121 of the sub-header pipe is parallel to the vertical direction; and, one or more refrigerant flow holes are provided in the side wall of the main section 121 of the sub-header pipe along the pipe length direction, and one or more heat exchange pipes of the first heat exchange unit 310 are in one-to-one communication with the refrigerant flow holes. At the same time, the first bent section of the sub-header pipe is a pipe section for connecting the main pipe section 111 of the sub-header pipe and the pipe section on the side of the top pipe section of the main pipe section 111, and the second bent section of the sub-header pipe is a pipe section for connecting the main pipe section 111 of the sub-header pipe and the pipe section on the side of the bottom pipe section of the main pipe section 111.
[0084] Optionally, in this embodiment, the specific configurations of the first bent section of the sub-header pipe and the second bent section of the sub-header pipe may refer to the "bent section 122 of the sub-header pipe" in the previous embodiment (2), which will not be elaborated here.
[0085] And, similar to the previous embodiments, the pipe lengths of the first sub-header pipe 120 and the second sub-header pipe 130 are arranged along the same axis. The sub-header pipe located in the middle position is the first sub-header pipe 120, and the sub-header pipes above and below it are the second sub-header pipes 130. Similarly, to avoid structural interference between the first sub-header pipe 120 and the adjacent second sub-header pipe 130, the first sub-header pipe 120 and the adjacent second sub-header pipe 130 are arranged at intervals, so that an upper interval space is formed between the top end of the first sub-header pipe 120 and the bottom end of the upper second sub-header pipe 130, and a lower interval space is formed between the top end of the first sub-header pipe 120 and the top end of the lower second sub-header pipe 130, wherein the first bent section of the sub-header pipe can be connected to the main section 121 of the sub-header pipe via the upper interval space, and the second bent section of the sub-header pipe can be connected to the main section 121 of the sub-header pipe via the lower interval space.
[0086] In the multiple embodiments mentioned above, the pipe diameters of the main pipe section 111 and the first sub-header pipe 120 are equal. Specifically, the pipe diameters of the main pipe section 111, the main section 121 of the sub-header pipe, and the bent section 122 of the sub-header pipe are all equal. In this way, the pipe diameter remains unchanged when the refrigerant flows between the main pipe section 111 and the first sub-header pipe 120, ensuring the stability of the refrigerant state and flow rate.
[0087] Alternatively, the number of the first subset pipes 120 may be one or more. For example, only one of the top pipe body, the middle pipe body, and the bottom pipe body of the main pipe section 111 may be configured as the first subset pipe 120, and the number of the first subset pipes 120 is one; or, the top pipe body and the bottom pipe body of the main pipe section 111 may be respectively configured to form a first subset pipe 120, and the number of the first subset pipes 120 is two; or, the top pipe body, the bottom pipe body, and the middle pipe body of the main pipe section 111 may be respectively configured to form a first subset pipe 120, and the number of the first subset pipes 120 is three.
[0088] In addition, in the embodiments shown above, the number of the second subset pipes 130 is one or more. Each second subset pipe 130 is respectively connected to the main pipe section 111 and the second heat exchange unit 320 to connect the flow paths of the main pipe section 111 and the second heat exchange unit 320. Optionally, the second subset pipe 130 is configured as a straight pipe body and its axis is parallel to the vertical direction; one or more refrigerant flow holes are formed in the side wall of the second subset pipe 130 and are in one-to-one correspondence with the refrigerant flow holes of one or more heat exchange pipes of the second heat exchange unit 320.
[0089] Optionally, the pipe diameter of the second subset pipe 130 is equal to that of the first subset pipe 120, and / or the pipe length of the second subset pipe 130 is equal to the pipe length of the first subset pipe 120 (the main section 121 of the subset pipe), so that the amount of refrigerant shunted from the main header 110 to each subset pipe is close, improving the uniformity of the refrigerant shunting and the heat exchange amount of each heat exchange unit.
[0090] As Figure 1b and 2b shown, the present application also discloses a heat exchanger 400, which can be used to realize the heat exchange between the refrigerant and its surrounding environment. Optionally, the type of the heat exchanger 400 includes but is not limited to a finned tube heat exchanger, a parallel flow heat exchanger, a microchannel heat exchanger, etc.
[0091] Specifically, the heat exchanger 400 includes a header structure 100 and a plurality of heat exchange units. The header structure 100 is the pipe connection structure shown in the above-mentioned embodiments, and the heat exchange units include one or more first heat exchange units 310 and one or more second heat exchange units 320. In addition, the first subset pipe 120 of the header structure 100 is connected to the first heat exchange unit 310, the second subset pipe 130 is connected to the second heat exchange unit 320, and the first subset pipe 120 and the second subset pipe 130 communicate with the main pipe section 111.
[0092] Optionally, the number of the above-mentioned header structures 100 provided in the heat exchanger is one, which is provided on the intake (outlet liquid) side of the heat exchanger 400, or on the outlet (inlet liquid) 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 provided on the intake (outlet liquid) side of the heat exchanger 400 and on the outlet (inlet liquid) side of the heat exchanger 400.
[0093] In some embodiments, when the heat exchanger 400 is used as a condenser, the header structure 100 is provided on the intake side of the heat exchanger. In the condenser usage state, the high-temperature gaseous refrigerant flows into the heat exchanger from the intake side. By applying the above-mentioned form of the header structure 100, the uniformity of the gaseous refrigerant shunting can be improved, the occurrence of the gaseous refrigerant leakage from the main header 110 and the sub-header side can be reduced, and the system safety is improved.
[0094] In some embodiments, the first heat exchange unit 310 and the first sub-header 120 are configured in the form of a conventional heat exchange flow path, that is, in both the refrigeration / heating operation modes, when the refrigerant flows through the conventional heat exchange flow path, the number of flow paths and the path length remain unchanged, only the flow direction is opposite.
[0095] In still other embodiments, the first heat exchange unit 310 and the first sub-header 120 are configured in the form of a variable shunting flow path. Taking the embodiment shown in the foregoing Figures 1a to 1c as an example, the first heat exchange unit 310 is provided with 4 groups of heat exchange tubes (respectively marked as a, b, c, and d) from top to bottom, and the left ports of each heat exchange tube are connected to the previous header structure 100, and the right ports are connected to the first sub-sub-header 140. And a first conduction component 210 is provided in the first sub-header 120, and the conduction direction of the first conduction component 210 is configured in a one-way conduction form that conducts when the refrigerant flows upward and blocks when flowing downward, and a second conduction component 220 is provided in the first sub-sub-header 140, and the conduction direction of the second conduction component 220 is configured in a one-way conduction form that conducts when the refrigerant flows upward and blocks when flowing downward. 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.
[0096] Thus, when the heat exchanger 400 is used as a condenser, as Figure 3aAs shown, the refrigerant flows through the first heat exchange unit 310 from left to right in the direction indicated by the arrow. The actual number of branched flow paths of the first heat exchange unit 310 decreases, and the refrigerant flow path extends, thereby improving the condensation effect on the gaseous refrigerant. And when the heat exchanger 400 is used as an evaporator, as Figure 3b shown, the refrigerant flows through the first heat exchange unit 310 from right to left in the direction indicated by the arrow. The first heat exchange unit 310 has a large number of branched flow paths, thereby enhancing the evaporation heat absorption effect on the liquid refrigerant.
[0097] In some alternative embodiments, the second heat exchange unit 320 and the second sub-header 130 are configured in a conventional heat exchange flow path form. Alternatively, in some embodiments, the second heat exchange unit 320 and the second sub-header 130 are configured in a variable flow splitting flow path form. Here, the specific configurations of the two flow path forms can refer to the previous embodiments and will not be elaborated here.
[0098] Optionally, when the number of the first heat exchange units 310 and the first sub-headers 120 is multiple, one or more of them can be configured in a conventional heat exchange flow path form, and the other one or more can be configured in a variable flow splitting flow path form. Similarly, when the number of the second heat exchange units 320 and the second sub-headers 130 is multiple, one or more of them can be configured in a conventional heat exchange flow path form, and the other one or more can be configured in a variable flow splitting flow path form. Here, the specific flow path forms constructed by each heat exchange unit and its sub-header can be adjusted according to actual needs, and the present application does not limit this.
[0099] In 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.
[0100] Specifically, the refrigeration device includes a device main body 500 and the header structure 100 shown in the previous embodiments, or the heat exchanger 400 shown in the previous embodiments. Here, taking the refrigeration device type as an air conditioner as an example, the above heat exchanger 400 can be the outdoor heat exchanger 410 of its outdoor unit, as Figure 4 shown, and / or, is the indoor heat exchanger of its indoor unit. The refrigeration device adopting the header structure 100 and the heat exchanger 400 shown in the above embodiments can improve the operation safety of the device, with a low risk of refrigerant leakage, effectively ensuring the service life of the device.
[0101] The above description and the drawings sufficiently illustrate embodiments of the present disclosure such that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments represent only 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. 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 its scope. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A header structure, characterized in that: include: A main header (110) having a main pipe section (111) and a first sub-manifold (120) formed by a partial pipe body structure of the main pipe section (111), wherein the first sub-manifold (120) is used to connect the main pipe section (111) and the first heat exchange unit (310) in a flow path; The second sub-manifold (130) is respectively connected to the main pipe section (111) and the second heat exchange unit (320) so as to connect the flow paths of the main pipe section (111) and the second heat exchange unit (320).
2. The header structure according to claim 1, characterized in that: The first sub-pipeline (120) is formed by reverse bending the top tube body of the main pipe section (111), and the bent first sub-pipeline (120) is arranged parallel to the axial direction of the main pipe section (111).
3. The header structure according to claim 2, characterized in that: The first sub-manifold (120) comprises: A sub-manifold main section (121), which is connected to the first heat exchange unit (310); The sub-manifold bending section (122) is constructed as a U-shaped pipe section, and one end of which is connected to the top end of the sub-manifold main section (121) and the other end of which is connected to the top end of the main pipe section (111).
4. The header structure according to claim 2, characterized in that: The tube lengths of the first sub-manifold (120) and the second sub-manifold (130) are arranged in sequence along the same axis, and the first sub-manifold (120) is located at the top end of the second sub-manifold (130).
5. The header structure according to claim 1, characterized in that: The first sub-pipeline (120) is formed by bending the bottom pipe body of the main pipe section (111) in the same direction, and the first sub-pipeline (120) after bending is arranged parallel to the axial direction of the main pipe section (111).
6. The header structure according to claim 5, characterized in that: The first sub-manifold (120) comprises: A sub-manifold main section (121), which is connected to the first heat exchange unit (310); The sub-manifold bending section (122) is constructed as an oblique pipe section that forms an angle with the vertical direction, and one end of which is connected to the top end of the sub-manifold main section (121) and the other end of which is connected to the bottom end of the main pipe section (111).
7. The header structure according to claim 5, characterized in that: The tube lengths of the first sub-manifold (120) and the second sub-manifold (130) are arranged in sequence along the same axis, and the first sub-manifold (120) is located at the bottom end of the second sub-manifold (130).
8. The header structure according to claim 1, characterized in that: The first sub-pipeline (120) is formed by bending the middle pipe body of the main pipe section (111) in a dislocated and protruding manner, and the first sub-pipeline (120) after bending is arranged parallel to the axial direction of the main pipe section (111).
9. The header structure according to claim 8, characterized in that: The number of the second sub-manifolds (130) is two or more; The tube lengths of the first sub-pipe (120) and the second sub-pipe (130) are arranged in sequence along the same axis, and the first sub-pipe (120) is located in the middle of two adjacent second sub-pipes (130).
10. The header structure according to any one of claims 1 to 9, characterized in that: The main pipe section (111) and the first sub-pipe (120) have the same pipe diameter; And / or, the first sub-manifold (120) and the second sub-manifold (130) have the same diameter.
11. The header structure according to any one of claims 1 to 9, characterized in that: The first sub-manifold (120) and the second sub-manifold (130) have the same length.
12. A heat exchanger, characterized in that: include: The header structure (100) according to any one of claims 1 to 11; A first heat exchange unit (310) and a second heat exchange unit (320), wherein the first heat exchange unit (310) is connected to the first sub-manifold (120), and the second heat exchange unit (320) is connected to the second sub-manifold (130).
13. The heat exchanger according to claim 12, characterized in that When the heat exchanger (400) is used as a condenser, the header structure (100) is arranged on the air inlet side of the heat exchanger (400).
14. The heat exchanger according to claim 12 or 13, characterized in that: The first heat exchange unit (310) and the first sub-manifold (120) are configured in a variable flow path form; And / or, the second heat exchange unit (320) and the second sub-manifold (130) are configured in a variable split flow path form.
15. A refrigeration device, characterized in that: include: Device body (500); as well as, The header structure (100) according to any one of claims 1 to 11, or the heat exchanger (400) according to any one of claims 12 to 14.