Heat exchanger and air conditioner

Abstract

The application relates to the technical field of air conditioners, and discloses a heat exchanger which comprises a first main pipe body provided with a first inlet and outlet at a first end, a first shunt pipe body connected to the first main pipe body at a first end and close to the first inlet and outlet, a second shunt pipe body located on a side of the first shunt pipe body away from the first inlet and outlet and comprising a first pipe section, a second pipe section and a third pipe section, wherein the first end of the first pipe section is connected to the first main pipe body and has a spacing between the first end and the second end of the first pipe body, the first end of the second pipe section and the first end of the third pipe section are both connected to the second end of the first pipe section, and a top anti-collision part is used for plugging the second end of the first main pipe body. The application further discloses an air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, for example to a heat exchanger and an air conditioner. Background Technology

[0002] Currently, air conditioners have become an indispensable appliance, widely used in homes, businesses, and transportation, for regulating air parameters such as cooling and heating. Related technology discloses an air conditioner including a heat exchanger. The heat exchanger includes a liquid collector and multiple heat exchange branches. The liquid collector has multiple branch pipes for connecting to corresponding heat exchange branches.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] Under high-frequency operating conditions, the refrigerant enters from the first end of the liquid collector pipe and then rushes directly to the second end of the liquid collector pipe (the overrush phenomenon), which affects the uniformity of refrigerant distribution.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a heat exchanger and an air conditioner that reduces the refrigerant overflow phenomenon in the liquid collection pipe, thereby improving the uniformity of the flow distribution.

[0008] In some embodiments, the heat exchanger includes a liquid collecting pipe and a gas collecting pipe, the liquid collecting pipe comprising:

[0009] The first main body has a first inlet and outlet at its first end;

[0010] The first branch pipe body has its first end connected to the first main body and close to the first inlet and outlet;

[0011] The second diversion pipe body is located on the side of the first diversion pipe body away from the first inlet and outlet, and includes a first pipe section, a second pipe section and a third pipe section; wherein, the first end of the first pipe section is connected to the first main pipe body and is spaced apart from the second end of the first main pipe body, and the first ends of the second pipe section and the third pipe section are both connected to the second end of the first pipe section.

[0012] The anti-impact top is used to seal the second end of the first main body.

[0013] In some embodiments, the air conditioner includes the heat exchanger.

[0014] The heat exchanger and air conditioner provided in this disclosure can achieve the following technical effects:

[0015] The refrigerant enters the first main pipe through the first inlet and outlet and flows to the second end of the first main pipe. The first and second branch pipes sequentially branch the refrigerant flow. When the first main pipe is vertically oriented, the first end of the first main pipe is located below the second end, and the first branch pipe is located below the second branch pipe. The first, second, and third pipe sections form a U-shaped structure, which increases the refrigerant resistance in the second branch pipe, thus ensuring sufficient refrigerant distribution in the first branch pipe. Furthermore, the anti-rush top reduces the phenomenon of refrigerant directly rushing to the second end of the first main pipe under high-frequency operation, thereby improving the uniformity of refrigerant distribution between the first and second branch pipes.

[0016] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0018] Figure 1 This is a schematic diagram of the liquid collection tube provided in this application;

[0019] Figure 2 This is a structural schematic diagram of the anti-scouring jacking pipe body provided in this application;

[0020] Figure 3 This is a schematic diagram of the structure of the heat exchanger with three heat exchange flow paths provided in this application;

[0021] Figure 4 This is a diagram of the cold flow path when the heat exchanger provided in this application is used as a condenser;

[0022] Figure 5 This is a diagram of the cold flow path when the heat exchanger provided in this application is used as an evaporator;

[0023] Figure 6 This is a schematic diagram of the structure of the heat exchanger with six heat exchange flow paths provided in this application;

[0024] Figure 7 This is a diagram of the cold flow path when the heat exchanger provided in this application is used as a condenser;

[0025] Figure 8 This is a diagram of the cold flow path when the heat exchanger provided in this application is used as an evaporator;

[0026] Figure 9 This is a schematic diagram of the gas collecting pipe provided in this application.

[0027] Figure label:

[0028] 10. First main pipe; 11. First inlet / outlet; 12. First branch pipe; 13. Second branch pipe; 131. First pipe section; 132. Second pipe section; 133. Third pipe section; 14. Anti-collision pipe; 15. Filter screen;

[0029] 20. Gas collecting pipe; 21. Second inlet / outlet; 22. Liquid collecting pipe; 23. Second main pipe body; 24. Third branch pipe body; 25. Fourth branch pipe body; 251. Fourth pipe section; 252. Fifth pipe section; 26. Arc-shaped pipe section;

[0030] 30. Heat exchanger; 31. First heat exchange path; 32. Second heat exchange path; 33. Third heat exchange path; 34. Fourth heat exchange path; 35. Fifth heat exchange path; 36. Sixth heat exchange path;

[0031] 40. Flow path switching component; 41. First conducting component; 42. Second conducting component. Detailed Implementation

[0032] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full 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 simplified in their depiction to simplify the drawings.

[0033] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0034] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0035] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0036] Unless otherwise stated, the term "multiple" means two or more.

[0037] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0038] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0040] This disclosure provides a heat exchanger 30, including a liquid collecting pipe 22 and a gas collecting pipe 20. The liquid collecting pipe 22 includes a first main pipe body 10, a first branch pipe body 12, a second branch pipe body 13, and an anti-impact top. Figure 1As shown, the first main body 10 has a first inlet / outlet 11 at its first end. The first branch pipe 12 has its first end connected to the first main body 10 and close to the first inlet / outlet 11. The second branch pipe 13 is located on the side of the first branch pipe 12 away from the first inlet / outlet 11, and the second branch pipe 13 includes a first pipe section 131, a second pipe section 132, and a third pipe section 133. The first end of the first pipe section 131 is connected to the first main body 10 and is spaced apart from the second end of the first main body 10. The first ends of the second pipe section 132 and the third pipe section 133 are both connected to the second end of the first pipe section 131. An anti-surge top is used to seal the second end of the first main body 10.

[0041] In this embodiment, the components from the first end to the second end of the first main pipe 10 are, in sequence, a first inlet / outlet 11, a first branch pipe 12, a second branch pipe 13, and an anti-impact pipe 14. Refrigerant enters the first main pipe 10 through the first inlet / outlet 11 and flows to the second end of the first main pipe 10. The first branch pipe 12 and the second branch pipe 13 successively branch the flowing refrigerant. When the first main pipe 10 is vertically oriented, the first end of the first main pipe 10 is located below the second end of the first main pipe 10, and the first branch pipe 12 is located below the second branch pipe 13. The first pipe segment 131, the second pipe segment 132, and the third pipe segment 133 form a U-shaped structure, which helps to increase the refrigerant resistance of the second branch pipe 13, thereby ensuring that the first branch pipe 12 distributes a sufficient amount of refrigerant. Furthermore, the anti-overflow top can reduce the phenomenon of refrigerant directly rushing to the second end of the first main pipe 10 under high-frequency operating conditions (overflow phenomenon), which is conducive to improving the flow uniformity of the first branch pipe 12 and the second branch pipe 13.

[0042] Optionally, the anti-impact top includes a plug or cap.

[0043] Optionally, the anti-impact top includes an anti-impact jacking pipe 14, with both ends of the anti-impact jacking pipe 14 sealed, and the middle part of the anti-impact jacking pipe 14 connected to the second end of the first main pipe 10. In this embodiment, the second end of the first main pipe 10 and the anti-impact jacking pipe 14 form a T-shaped structure.

[0044] Optionally, the axis of the anti-impact jacking pipe body 14 is perpendicular to the axis of the first main pipe body 10.

[0045] In this embodiment, since the second end of the first main pipe 10 and the anti-impact jacking pipe 14 form a T-shaped structure, it is equivalent to adding a laterally extended buffer space to the second end of the first main pipe 10. Furthermore, the design of the anti-impact jacking pipe 14 being perpendicular to the axis of the first main pipe 10 effectively changes the flow direction. When the refrigerant flows vertically upward along the first main pipe 10 to the second end, the anti-impact jacking pipe 14 forces the refrigerant to change from vertical to lateral flow. This abrupt change in direction consumes the kinetic energy of the refrigerant, reducing the direct impact of the refrigerant on the end of the first main pipe 10.

[0046] Optionally, the axis of the first diversion pipe body 12 is parallel to the axis of the anti-surge jacking pipe body 14. And / or, the axes of the second end of the second pipe section 132 and the second end of the third pipe section 133 are both parallel to the axis of the anti-surge jacking pipe body 14. In this embodiment, the parallel axis design facilitates a compact layout of the liquid collection pipe in a limited space, especially around the vertically installed first main pipe body 10. Furthermore, the parallel axis design facilitates the use of standardized processing techniques, such as welding or casting, reducing manufacturing complexity.

[0047] Optionally, the distance between the two ends of the anti-impact jacking pipe body 14 and the axis of the first main pipe body 10 is equal.

[0048] In this embodiment, the symmetrical structural design facilitates the uniform distribution of refrigerant within the anti-impact top pipe body 14. When the refrigerant enters the anti-impact top pipe body 14 from the second end of the first main pipe body 10, the symmetrical design allows the fluid kinetic energy to be more evenly distributed, reducing the risk of local stress concentration and improving the reliability of the compressor's liquid collection pipe under high-frequency operating conditions.

[0049] Optionally, such as Figure 2 As shown, the diameter of the anti-collision jacking pipe body 14 is d1, and the diameter of the first main pipe body 10 is d2, and 1≤d1 / d2≤2. Among them, 15mm≤d1≤20mm, 10mm≤d2≤15mm.

[0050] In this embodiment, by designing an appropriate pipe diameter ratio between the anti-overflow pipe body 14 and the first main pipe body 10, it is beneficial to reduce the overflow phenomenon while promoting a more uniform distribution of the refrigerant in the first main pipe body 10 to the first branch pipe body 12 and the second branch pipe body 13.

[0051] Optionally, the value of d1 can be 15mm, 16mm, 17mm, 18mm, 19mm or 20mm.

[0052] Optionally, the value of d2 can be 10mm, 11mm, 12mm, 13mm, 14mm or 15mm.

[0053] Optionally, the value of d1 / d2 can be 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2.

[0054] Optionally, such as Figure 2 As shown, the length of the anti-collision jacking pipe body 14 is h1, the length of the first pipe section 131 is h2, and the distance from the first pipe section 131 to the second end of the first main pipe body 10 is h3, and 0.4≤h1 / (h2+h3)≤0.7. Among them, 20mm≤h1≤30mm, 25mm≤h2≤35mm, and 15mm≤h3≤25mm.

[0055] In this embodiment, the refrigerant flow distance is optimized by designing the proportional relationship between h1, h2 and h3, which can reduce the direct rushing phenomenon while ensuring the uniformity of the diversion.

[0056] Optionally, the value of h1 can be 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm or 30mm.

[0057] Optionally, the value of h2 can be 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm or 35mm.

[0058] Optionally, the value of h3 can be selected as 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm or 25mm.

[0059] Optionally, such as Figure 1 As shown, a filter screen 15 is provided between the first diversion tube 12 and the first inlet / outlet 11. The filter screen 15 is used to disperse the refrigerant flowing through it, thereby improving the uniformity of liquid distribution.

[0060] Optionally, such as Figure 9 As shown, the gas collecting pipe includes a second main pipe body 23, a fourth branch pipe body 25, and multiple third branch pipe bodies 24. The first end of the second main pipe body 23 has a second inlet / outlet, and the first ends of the multiple third branch pipe bodies 24 are connected to the second main pipe body 23 and are close to the second inlet / outlet. The fourth branch pipe body 25 is located on the side of the third branch pipe bodies 24 away from the second inlet / outlet, and includes a fourth pipe section 251 and a fifth pipe section 252. The first end of the fourth pipe section 251 is connected to the second end of the second main pipe body 23, and the first end of the fifth pipe section 252 is connected to the second end of the fourth pipe section 251 via an arc-shaped pipe section 26; furthermore, the fourth pipe section 251 and the second main pipe body 23 are coaxial, and the axis of the fourth pipe section 251 is perpendicular to the axis of the fifth pipe section 252.

[0061] In this embodiment, when the gas collecting pipe is vertically arranged, the second end of the gas collecting pipe is located below its first end. Here, the third branch pipe body 24 and the fourth branch pipe body 25 are arranged in different positions. When the fourth pipe section 251 and the fifth pipe section 252 are connected by an arc-shaped pipe section 26, it is beneficial to increase the flow rate of the refrigerant in the fifth pipe section 252 when the refrigerant in the gas collecting pipe flows downward.

[0062] Optionally, the heat exchanger 30 further includes a heat exchange module and a flow path switching component 40. The heat exchange module includes multiple heat exchange flow paths. The first end of each heat exchange flow path is connected to the gas collecting pipe 20, and the second end of each heat exchange flow path is connected to the liquid collecting pipe 22. The flow path switching component 40 is used to switch the connection mode of the multiple heat exchange branches under different operating modes.

[0063] In this embodiment, the flow path switching component 40 is used to switch the connection mode of multiple heat exchange flow paths in different operating modes. For example, when the heat exchanger 30 with the liquid collection pipe is used as an outdoor heat exchanger, some heat exchange flow paths are connected in series when the air conditioner is operating in cooling mode and the heat exchanger 30 is used as a condenser. When the air conditioner is operating in heating mode and the heat exchanger 30 is used as an evaporator, some heat exchange flow paths are connected in parallel. In this way, the flow path switching component 40 enables the heat exchanger 30 to have different flow paths in different operating modes, that is, it has a variable flow splitting function, which effectively improves the heat exchange efficiency of the heat exchanger 30.

[0064] Optionally, such as Figure 3As shown, the flow path switching assembly 40 includes a first conducting component 41 and a second conducting component 42. The first conducting component 41 is disposed in the gas collecting pipe 20, and its conducting direction is defined as flowing from the second end of the gas collecting pipe 20 to the second inlet / outlet 21. At least one third diverting pipe body 24 is located downstream of the first conducting component 41, at least one third diverting pipe body 24 is located upstream of the first conducting component 41, and a fourth diverting pipe body 25 is located upstream of the first conducting component 41. The second conducting component 42 is disposed in the liquid collecting pipe 22, and its conducting direction is defined as flowing from the first inlet / outlet 11 to the second end of the liquid collecting pipe 22. The first diverting pipe body 12 is located upstream of the second conducting component 42, and the second diverting pipe body 13 is located downstream of the second conducting component 42. The heat exchange module includes a first heat exchange flow path 31, a second heat exchange flow path 32, and a third heat exchange flow path 33. The first end of the first heat exchange flow path 31 is connected to the second end of the fourth branch pipe body 25, and its second end is connected to the second end of the first branch pipe body 12. The first end of the second heat exchange flow path 32 is connected to the third branch pipe body 24 located upstream of the first conductive component 41, and its second end is connected to the second end of the second pipe section 132. The first end of the third heat exchange flow path 33 is connected to the third branch pipe body 24 located downstream of the first conductive component 41, and its second end is connected to the second end of the third pipe section 133.

[0065] In this embodiment, when the first conductive component 41 is unidirectional, the upstream side refers to the refrigerant inflow side of the first conductive component 41, and the downstream side refers to the refrigerant outflow side of the first conductive component 41. The same applies to the second conductive component 42. Both the gas collecting pipe 20 and the liquid collecting pipe 22 are vertically arranged, with the first end of the gas collecting pipe 20 located above its second end, and the first end of the liquid collecting pipe 22 located below its second end. The heat exchange module includes three heat exchange flow paths: the first heat exchange flow path 31, the second heat exchange flow path 32, and the third heat exchange flow path 33, arranged sequentially from bottom to top. Figure 4 As shown, when the heat exchanger 30 functions as a condenser, the refrigerant enters the gas collecting pipe 20 through the second inlet / outlet 21. During this flow, both the first and second conductive components 41 and 42 are closed. After entering the gas collecting pipe 20 through the second inlet / outlet 21, the refrigerant flows sequentially along the third heat exchange path 33, the second heat exchange path 32, and the first heat exchange path 31, finally exiting the liquid collecting pipe 22 through the first inlet / outlet 11. Thus, the third heat exchange path 33, the second heat exchange path 32, and the first heat exchange path 31 form a series refrigerant flow path. Figure 5As shown, when the heat exchanger 30 functions as an evaporator, the refrigerant enters the liquid collection pipe 22 through the first inlet / outlet 11. During this flow, both the first conductive component 41 and the second conductive component 42 are in a conductive state. At this time, after entering the liquid collection pipe 22 through the first inlet / outlet 11, the refrigerant flows along the first heat exchange path 31, the second heat exchange path 32, and the third heat exchange path 33, respectively, and finally exits the gas collection pipe 20 through the second inlet / outlet 21. Thus, the first heat exchange path 31, the second heat exchange path 32, and the third heat exchange path 33 form a parallel refrigerant flow path. It should be noted that the heat exchanger 30 with variable flow distribution function, composed of three heat exchange paths, is the smallest unit. Increasing the number of heat exchange paths beyond this is still within the scope of protection of this application.

[0066] Optionally, such as Figure 6As shown, two first diversion pipes 12 and two second diversion pipes 13 are arranged sequentially from the first end of the first main pipe 10 to the second end of the first main pipe 10, and are respectively designated as First Diversion Pipe No. 1, First Diversion Pipe No. 2, Second Diversion Pipe No. 1, and Second Diversion Pipe No. 2. Five third diversion pipes 24 are arranged sequentially from the second end of the second main pipe 23 to the first end, and are respectively designated as Third Diversion Pipe No. 1, Third Diversion Pipe No. 24, Third Diversion Pipe No. 3, Third Diversion Pipe No. 4, and Third Diversion Pipe No. 5. The flow path switching assembly 40 includes a first guiding component 41 and a second guiding component 42. The first guiding component 41 is disposed in the gas collecting pipe 20, and the guiding direction is limited to flow from the second end of the gas collecting pipe 20 to the second inlet / outlet 21. The first third branch pipe body 24 is located upstream of the first conductive component 41, and the second to fifth third branch pipe bodies 24 are located downstream of the first conductive component 41. The second conductive component 42 is disposed in the liquid collecting pipe 22, and the guiding direction is limited to flow from the first inlet / outlet 11 to the second end of the liquid collecting pipe 22. The first first branch pipe body 12 is located upstream of the second conductive component 42, and the second first branch pipe body 12, the first second branch pipe body 13, and the second second branch pipe body 13 are located downstream of the second conductive component 42. The heat exchange module includes a first heat exchange flow path 31 to a sixth heat exchange flow path 36. The first end of the first heat exchange flow path 31 is connected to the second end of the fifth pipe section 252, and its second end is connected to the second end of the first first branch pipe body 12. The first end of the second heat exchange flow path 32 is connected to the second end of the first third branch pipe body 24, and its second end is connected to the second end of the second first branch pipe body 12. The first end of the third heat exchange flow path 33 is connected to the second end of the second branch pipe body 24, and its second end is connected to the second end of the second pipe section 132 of the first branch pipe body 13. The first end of the fourth heat exchange flow path 34 is connected to the second end of the third branch pipe body 24, and its second end is connected to the second end of the third pipe section 133 of the first branch pipe body 13. The first end of the fifth heat exchange flow path 35 is connected to the second end of the fourth branch pipe body 24, and its second end is connected to the second end of the second pipe section 132 of the second branch pipe body 13. The first end of the sixth heat exchange flow path 36 is connected to the second end of the fifth branch pipe body 24, and its second end is connected to the second end of the third pipe section 133 of the second branch pipe body 13.

[0067] In this embodiment, both the gas collecting pipe 20 and the liquid collecting pipe 22 are vertically arranged, with the first end of the gas collecting pipe 20 located above its second end, and the first end of the liquid collecting pipe 22 located below its second end. The heat exchange module includes six heat exchange flow paths: the first heat exchange flow path 31, the second heat exchange flow path 32, the third heat exchange flow path 33, the fourth heat exchange flow path 34, the fifth heat exchange flow path 35, and the sixth heat exchange flow path 36 are arranged sequentially from bottom to top. The first first branch pipe body 12, the second first branch pipe body 12, the first second branch pipe body 13, and the second second branch pipe body 13 are arranged sequentially from bottom to top. Furthermore, the first third branch pipe body 24, the second third branch pipe body 24, the third third branch pipe body 24, the fourth third branch pipe body 24, and the fifth third branch pipe body 24 are arranged sequentially from bottom to top.

[0068] like Figure 7 As shown, when the heat exchanger 30 functions as a condenser, the refrigerant enters the gas collecting pipe 20 through the second inlet / outlet 21. During this flow, both the first and second conductive components 41 and 42 are closed. After entering the gas collecting pipe 20 through the second inlet / outlet 21, the refrigerant flows downstream of the second conductive component 42 of the liquid collecting pipe 22 along the third heat exchange path 33, the fourth heat exchange path 34, the fifth heat exchange path 35, and the sixth heat exchange path 36, respectively. Then, it flows upstream of the second conductive component 42 of the liquid collecting pipe 22 along the second heat exchange path 32 and the first heat exchange path 31, and finally exits the liquid collecting pipe 22 through the first inlet / outlet 11. Thus, the third, fourth, fifth, and sixth heat exchange paths 33, 34, 35, and 36 are collectively referred to as the upper flow path, and the upper flow path, the second heat exchange path 32, and the first heat exchange path 31 form a series refrigerant flow path.

[0069] like Figure 8 As shown, when the heat exchanger 30 functions as an evaporator, the refrigerant enters the liquid collection pipe 22 through the first inlet / outlet 11. During this flow, both the first conductive component 41 and the second conductive component 42 are in a conductive state. After entering the liquid collection pipe 22 through the first inlet / outlet 11, the refrigerant flows along the first heat exchange path 31, the second heat exchange path 32, the third heat exchange path 33, the fourth heat exchange path 34, the fifth heat exchange path 35, and the sixth heat exchange path 36 to the gas collection pipe 20, and finally exits the gas collection pipe 20 through the second inlet / outlet 21. Thus, the first heat exchange path 31, the second heat exchange path 32, the third heat exchange path 33, the fourth heat exchange path 34, the fifth heat exchange path 35, and the sixth heat exchange path 36 form parallel refrigerant flow paths.

[0070] Optionally, the first conducting component 41 includes a one-way valve or other device that enables one-way conduction.

[0071] Optionally, the second conduction component 42 may include a one-way valve or other device that enables one-way conduction.

[0072] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included 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 accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A heat exchanger comprising a liquid collecting pipe (22) and a gas collecting pipe (20), characterized in that, The collecting tube (22) includes: The first main body (10) has a first inlet and outlet (11) at its first end; The first branch pipe body (12) has its first end connected to the first main pipe body (10) and close to the first inlet and outlet (11); The second diversion pipe body (13) is located on the side of the first diversion pipe body (12) away from the first inlet and outlet (11), and includes a first pipe section (131), a second pipe section (132) and a third pipe section (133); wherein, the first end of the first pipe section (131) is connected to the first main pipe body (10) and there is a gap between it and the second end of the first main pipe body (10), and the first ends of the second pipe section (132) and the third pipe section (133) are both connected to the second end of the first pipe section (131); The anti-impact top is used to seal the second end of the first main body (10).

2. The heat exchanger according to claim 1, characterized in that, The shock absorber top includes: The anti-impact jacking pipe body (14) is sealed at both ends, and its middle part is connected to the second end of the first main pipe body (10).

3. The heat exchanger according to claim 2, characterized in that, The axis of the anti-impact jacking pipe body (14) is perpendicular to the axis of the first main pipe body (10); and / or, The axis of the first diversion pipe (12) is parallel to the axis of the anti-surge jacking pipe (14); and / or, The axis of the second end of the second pipe section (132) and the axis of the second end of the third pipe section (133) are both parallel to the axis of the anti-impact jacking pipe body (14).

4. The heat exchanger according to any one of claims 1 to 3, characterized in that, The distance between the two ends of the anti-impact jacking pipe body (14) and the axis of the first main pipe body (10) is equal.

5. The heat exchanger according to any one of claims 1 to 3, characterized in that, The diameter of the anti-impact jacking pipe body (14) is d1, and the diameter of the first main pipe body (10) is d2, and 1≤d1 / d2≤2; wherein, 15mm≤d1≤20mm, 10mm≤d2≤15mm.

6. The heat exchanger according to any one of claims 1 to 3, characterized in that, The length of the anti-collision jacking pipe body (14) is h1, the length of the first pipe section (131) is h2, the distance from the first pipe section (131) to the second end of the first main pipe body (10) is h3, and 0.4≤h1 / (h2+h3)≤0.7; Among them, 20mm≤h1≤30mm, 25mm≤h2≤35mm, and 15mm≤h3≤25mm.

7. The heat exchanger according to any one of claims 1 to 3, characterized in that The gas collecting tube (20) includes: The second main body (23) has a second inlet and outlet (21) at its first end; Multiple third branch pipe bodies (24), the first end of which is connected to the second main pipe body (23) and close to the second inlet and outlet (21); The fourth branch pipe body (25) is located on the side of the third branch pipe body (24) away from the second inlet and outlet (21), and includes a fourth pipe section (251) and a fifth pipe section (252); wherein, the first end of the fourth pipe section (251) is connected to the second end of the second main pipe body (23), and the first end of the fifth pipe section (252) is connected to the second end of the fourth pipe section (251) through an arc-shaped pipe section (26); and the fourth pipe section (251) is coaxial with the second main pipe body (23), and the axis of the fourth pipe section (251) is perpendicular to the axis of the fifth pipe section (252).

8. The heat exchanger according to any one of claims 1 to 3, characterized in that Also includes: The heat exchange module includes multiple heat exchange flow paths, the first end of which is connected to the gas collection pipe (20), and the second end of which is connected to the liquid collection pipe (22). The flow path switching component (40) is used to switch the connection mode of multiple heat exchange branches under different operating modes.

9. The heat exchanger of claim 8, wherein, The flow path switching component (40) includes: A first guiding component (41) is disposed on the gas collecting pipe (20), and the guiding direction is limited to flow from the second end of the gas collecting pipe (20) to the second inlet and outlet (21); at least one third diverting pipe (24) is located downstream of the first guiding component (41), at least one third diverting pipe (24) is located upstream of the first guiding component (41), and a fourth diverting pipe (25) is located upstream of the first guiding component (41); The second guiding component (42) is disposed in the liquid collecting pipe (22), and the guiding direction is limited to flow from the first inlet and outlet (11) to the second end of the liquid collecting pipe (22); wherein, the first diversion pipe body (12) is located on the upstream side of the second guiding component (42), and the second diversion pipe body (13) is located on the downstream side of the second guiding component (42); The heat exchange module includes: The first heat exchange flow path (31) has its first end connected to the second end of the fourth branch pipe body (25), and its second end connected to the second end of the first branch pipe body (12). The second heat exchange flow path (32) has its first end connected to the third branch pipe body (24) located upstream of the first conductive component (41), and its second end connected to the second end of the second pipe section (132). The third heat exchange flow path (33) has its first end connected to the third branch pipe body (24) located downstream of the first conductive component (41), and its second end connected to the second end of the third pipe section (133).

10. The heat exchanger of claim 8, wherein Two first branch pipes (12) and two second branch pipes (13) are arranged sequentially from the first end of the first main pipe (10) to the second end of the first main pipe (10), and are respectively named No. 1 first branch pipe (12), No. 2 first branch pipe (12), No. 1 second branch pipe (13) and No. 2 second branch pipe (13); five third branch pipes (24) are arranged sequentially from the second end of the second main pipe (23) to the first end, and are respectively named No. 1 third branch pipe (24), No. 2 third branch pipe (24), No. 3 third branch pipe (24), No. 4 third branch pipe (24) and No. 5 third branch pipe (24). The flow path switching component (40) includes: The first guiding component (41) is disposed in the gas collecting pipe (20), and the guiding direction is limited to flow from the second end of the gas collecting pipe (20) to the second inlet and outlet (21); the first third diversion pipe body (24) is located upstream of the first guiding component (41), and the second to fifth third diversion pipe bodies (24) are located downstream of the first guiding component (41); The second guiding component (42) is disposed on the liquid collecting pipe (22), and the guiding direction is limited to flow from the first inlet and outlet (11) to the second end of the liquid collecting pipe (22); wherein, the first first diversion pipe body (12) is located on the upstream side of the second guiding component (42), and the second first diversion pipe body (12), the first second diversion pipe body (13) and the second second diversion pipe body (13) are located on the downstream side of the second guiding component (42); The heat exchange module includes: The first heat exchange flow path (31) has its first end connected to the second end of the fifth pipe section (252) and its second end connected to the second end of the first branch pipe body (12). The second heat exchange flow path (32) has its first end connected to the second end of the first third branch pipe body (24) and its second end connected to the second end of the second first branch pipe body (12). The third heat exchange flow path (33) has its first end connected to the second end of the second third branch pipe body (24) and its second end connected to the second end of the second pipe section (132) of the first second branch pipe body (13). The fourth heat exchange flow path (34) has its first end connected to the second end of the third branch pipe body (24) and its second end connected to the second end of the third pipe section (133) of the first second branch pipe body (13). The fifth heat exchange flow path (35) has its first end connected to the second end of the fourth third branch pipe body (24), and its second end connected to the second end of the second pipe section (132) of the second second branch pipe body (13). The sixth heat exchange flow path (36) has its first end connected to the second end of the fifth third branch pipe body (24), and its second end connected to the second end of the third pipe section (133) of the second second branch pipe body (13).

11. An air conditioner characterized by comprising: Includes the heat exchanger as described in any one of claims 1 to 10.

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