Heat exchanger and air conditioner having the same

Abstract

The utility model provides a kind of heat exchanger and air conditioner with it, the heat exchanger includes: heat exchange part, first distributor and distributor pipe, multiple refrigerant inlets are provided on heat exchange part;First distributor is set to one end outside of heat exchange part, first distributor has first distributor mouth and second distributor mouth, second distributor mouth is at the side of first distributor, which is away from heat exchange part;Distributor pipe is connected with second distributor mouth and one refrigerant inlet of heat exchange part;And distributor pipe includes connecting straight pipe section, vertically arranged first straight pipe section and second straight pipe section and horizontally arranged third straight pipe section, the lower end of first straight pipe section is connected to second distributor mouth;The upper end of second straight pipe section is communicated with the upper end of first straight pipe section;One end of third straight pipe section is connected to corresponding refrigerant inlet;Connecting straight pipe section is arranged between the lower end of second straight pipe section and the other end of third straight pipe section.The overall structure layout of the heat exchanger of the utility model is better, not only smaller space is occupied, and heat exchange effect is better.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioners, and in particular to a heat exchanger and an air conditioner having the same. Background Technology

[0002] With the improvement of people's living standards, air conditioners have become an indispensable household appliance. Among them, the heat exchanger is one of the important components. The heat exchanger in related technologies includes a heat exchange section for heat exchange with airflow, a first distributor, and a second distributor. The first distributor is located at the bottom of the second distributor and has a first and a second dispensing port. The first dispensing port is connected to the refrigerant inlet at the bottom of the heat exchanger via a dispensing pipe, and the second dispensing port is connected to the inlet of the second distributor. The second distributor has multiple outlets, and these outlets are connected to multiple refrigerant inlets of the heat exchanger via multiple dispensing pipes, thereby realizing multi-path heat exchange. However, the overall structural layout of the heat exchanger in related technologies is relatively loose, resulting in a large space occupation. Utility Model Content

[0003] In view of the above problems, the present invention is proposed to provide a heat exchanger and an air conditioner having the above problems in order to overcome or at least partially solve the above problems.

[0004] One objective of this invention is to optimize the overall structural layout of a heat exchanger.

[0005] Specifically, this utility model provides a heat exchanger.

[0006] This utility model also provides an air conditioner.

[0007] The heat exchanger for an air conditioner of this utility model includes: a heat exchange section having multiple refrigerant inlets; a first distributor disposed on the outer side of one end of the heat exchange section, the first distributor having a first and a second dispensing port facing upwards, the second dispensing port being located on the side of the first dispensing port away from the heat exchange section; a dispensing pipe connecting the second dispensing port and one of the refrigerant inlets of the heat exchange section; and the dispensing pipe including: a first straight pipe section, vertically arranged, the lower end of the first straight pipe section connected to the second dispensing port; a second straight pipe section, vertically arranged, the upper end of the second straight pipe section connected to the upper end of the first straight pipe section; a third straight pipe section, horizontally arranged, one end of the third straight pipe section connected to the corresponding refrigerant inlet and coaxially arranged with the corresponding refrigerant inlet; and a connecting straight pipe section, horizontally arranged, the connecting straight pipe section being disposed between the lower end of the second straight pipe section and the other end of the third straight pipe section.

[0008] In some embodiments, the plane containing the axis of the first straight pipe segment and the axis of the second straight pipe segment makes an angle of 70° to 90° with the axis of the third straight pipe segment;

[0009] The angle between the axis of the connecting straight pipe section and the axis of the third straight pipe section is 130° to 150°.

[0010] In some embodiments, the upper end of the second straight pipe section is connected to the upper end of the first straight pipe section via a first arc-shaped pipe section;

[0011] The lower end of the second straight pipe section is connected to the corresponding end of the connecting straight pipe section through a second arc-shaped pipe section;

[0012] The other end of the third straight pipe section is connected to the corresponding end of the connecting straight pipe section via a third arc-shaped pipe section.

[0013] In some embodiments, the central angle of the third arc-shaped pipe segment is 30° to 42°;

[0014] The ratio between the length of the line connecting the centers of the openings at both ends of the third arc-shaped pipe segment and the length of the connecting straight pipe segment is 1 / 5 to 1 / 3.

[0015] The ratio between the length of the line connecting the centers of the openings at both ends of the third arc-shaped pipe section and the length of the third straight pipe section is 1 / 5 to 1 / 4.

[0016] In some embodiments, the ratio between the distance between the axis of the first straight pipe segment and the axis of the second straight pipe segment and the length of the third straight pipe segment is 5 / 8 to 5 / 6.

[0017] In some embodiments, the ratio between the length of the second straight pipe segment and the length of the third straight pipe segment is 1 / 2 to 2 / 3.

[0018] In some embodiments, the heat exchanger further includes:

[0019] The second distributor is located above the first distributor; the inlet of the second distributor is connected to the first distributor port; and the multiple outlets of the second distributor are respectively connected to the multiple refrigerant inlets of the heat exchange section.

[0020] In some embodiments, the inlet of the second distributor is coaxially arranged with the first distributor port, and a one-way valve is provided between the inlet of the second distributor and the first distributor port, allowing refrigerant to flow only from the first distributor port to the inlet of the second distributor.

[0021] In some embodiments, the dispensing tube is located below the lower end face of the one-way valve.

[0022] The air conditioner of this utility model includes a condenser and an evaporator; the condenser is a heat exchanger as described in any one of the above-mentioned methods, or the evaporator is a heat exchanger as described in any one of the above-mentioned methods.

[0023] In this embodiment of the heat exchanger for an air conditioner, the second liquid outlet on the first liquid distributor, located away from the heat exchange section, is connected to the corresponding refrigerant inlet on the heat exchanger via a liquid distribution pipe. This allows the first liquid outlet near the heat exchange section to connect to the second liquid distributor, thus providing a basis for the second liquid distributor to be positioned close to the heat exchange section. Furthermore, since the liquid distribution pipe is composed of a first straight pipe section, a second straight pipe section, a connecting straight pipe section, and a third straight pipe section connected in sequence, and by vertically aligning the first and second straight pipe sections and coaxially aligning the third straight pipe section with the refrigerant inlet, the liquid distribution pipe can avoid the first liquid outlet and structures connected to the first liquid outlet (such as the connecting pipe for connecting the second liquid distributor). This not only reduces the overall size of the heat exchanger but also ensures that the refrigerant flowing out of the second liquid outlet can smoothly flow into the corresponding refrigerant inlet, guaranteeing the heat exchange efficiency of the heat exchanger. Therefore, the goal of optimizing the overall structural layout of the heat exchanger is achieved.

[0024] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0025] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0026] Figure 1 This is a schematic structural diagram of a heat exchanger according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of a heat exchanger according to an embodiment of the present utility model;

[0028] Figure 3 This is a schematic structural diagram of a heat exchanger according to an embodiment of the present utility model;

[0029] Figure 4 This is a schematic structural diagram of the liquid separator according to an embodiment of the present utility model;

[0030] Figure 5 This is a schematic structural diagram of the liquid separator according to an embodiment of the present utility model;

[0031] Figure 6 This is a schematic structural diagram of an air conditioner according to an embodiment of the present utility model.

[0032] Figure label:

[0033] Heat exchanger 10;

[0034] Heat exchange section 100; Refrigerant inlet 110;

[0035] First distributor 200; First dispensing port 210; Second dispensing port 220;

[0036] Separating pipe 300; First straight pipe section 310; Second straight pipe section 320; Connecting straight pipe section 330; Third straight pipe section 340; First arc-shaped pipe section 350; Second arc-shaped pipe section 360; Third arc-shaped pipe section 370;

[0037] Second dispenser 400;

[0038] Air conditioner 20. Detailed Implementation

[0039] The following reference Figures 1 to 6 This invention describes a heat exchanger and an air conditioner having the same embodiment. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0040] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The following description, with reference to the accompanying drawings, describes a heat exchanger 10 for an air conditioner 20 according to an embodiment of the present invention.

[0044] like Figures 1-5 As shown, the heat exchanger 10 for the air conditioner 20 in this embodiment of the present invention includes a heat exchange section 100, a first liquid distributor 200 and a liquid distributor pipe 300.

[0045] The heat exchange section 100 has multiple refrigerant inlets 110, through which the refrigerant can enter the heat exchange section 100 and exchange heat with the airflow.

[0046] The first distributor 200 is disposed on the outer side of one end of the heat exchange section 100. The first distributor 200 has a first distributor port 210 with an upward opening and a second distributor port 220. The second distributor port 220 is located on the side of the first distributor port 210 away from the heat exchange section 100.

[0047] The distributor pipe 300 connects the second distributor port 220 and a refrigerant inlet 110 of the heat exchange section 100. The distributor pipe 300 includes a first straight pipe section 310, a second straight pipe section 320, a connecting straight pipe section 330, and a third straight pipe section 340. The first straight pipe section 310 is vertically arranged, and its lower end is connected to the second distributor port 220. The second straight pipe section 320 is vertically arranged, and its upper end is connected to the upper end of the first straight pipe section 310. The third straight pipe section 340 is horizontally arranged, and one end of the third straight pipe section 340 is connected to the corresponding refrigerant inlet 110. The three straight pipe sections are coaxially arranged with the corresponding refrigerant inlet 110. The connecting straight pipe section 330 is horizontally arranged and is located between the lower end of the second straight pipe section 320 and the other end of the third straight pipe section 340.

[0048] The heat exchanger 10 in the related technology includes a heat exchange section 100, a first distributor 200, and a second distributor 400. The first distributor 200 is located at the bottom of the second distributor 400, and has a first distributor port 210 and a second distributor port 220. The first distributor port 210 is closer to the heat exchange section 100 than the second distributor port 220. The first distributor port 210 is connected to the refrigerant inlet 110 at the bottom of the heat exchanger 10 via a distributor pipe 300, and the second distributor port 220 is connected to the inlet of the second distributor 400. The second distributor 400 has multiple outlets, and the multiple outlets are respectively connected to the multiple refrigerant inlets 110 of the heat exchanger 10 via multiple distributor pipes 300. The connecting pipe between the first distributor 200 and the second distributor 400 is a vertically arranged rigid pipe. The second distributor port 220 is coaxially arranged with the inlet of the second distributor 400. This not only makes the distance between the second distributor 400 and the heat exchange section 100 relatively large, but also makes the length of the distributor pipe 300 connecting the multiple outlets of the second distributor 400 and the multiple refrigerant inlets 110 of the heat exchanger 10 relatively long. This results in a relatively loose overall structural layout of the heat exchanger 10 and causes the heat exchanger 10 to occupy a large space.

[0049] Compared with related technologies, in the embodiment of the present invention, the heat exchanger 10 for the air conditioner 20 has a second liquid distribution port 220 on the first liquid distributor 200 that is far away from the heat exchange section 100 connected to the corresponding refrigerant inlet 110 through a liquid distribution pipe 300, so that the first liquid distribution port 210 near the heat exchange section 100 can be connected to the second liquid distributor 400, providing a premise for the second liquid distributor 400 to be located near the heat exchange section 100. Furthermore, since the liquid distribution pipe 300 is composed of a first straight pipe section 310, a second straight pipe section 320, a connecting straight pipe section 330, and a third straight pipe section 340 connected in sequence, and by making the first straight pipe section 310 and the second straight pipe section 320 vertically arranged, and the third straight pipe section 340 coaxially arranged with the refrigerant inlet 110, the liquid distribution pipe 300 can avoid the first liquid distribution port 210 and the structures connected to the first liquid distribution port 210 (such as the connecting pipe for connecting the second liquid distributor 400). This not only reduces the overall size of the heat exchanger 10, but also allows the refrigerant flowing out of the second liquid distribution port 220 to flow smoothly into the corresponding refrigerant inlet 110, ensuring the heat exchange efficiency of the heat exchanger 10. Therefore, the goal of optimizing the overall structural layout of the heat exchanger 10 is achieved.

[0050] like Figure 1 As shown, the heat exchanger 10 of this embodiment includes a heat exchange section 100, a first distributor 200, a second distributor 400, and a distributor pipe 300. The second distributor 400 is disposed above the first distributor 200, and its inlet is connected to the first distributor port 210. Multiple outlets of the second distributor 400 are respectively connected to multiple refrigerant inlets 110 of the heat exchange section 100. In other words, the second distributor 400 is connected to the first distributor port 210 near the heat exchange section 100, thus reducing the distance between the second distributor 400 and the heat exchange section 100, as well as the size of the multiple pipes connecting the multiple outlets of the second distributor 400 to the corresponding multiple refrigerant inlets 110. Therefore, the overall size of the heat exchanger 10 is reduced, and the refrigerant flowing out of the second distributor 400 flows into the heat exchange section 100 more quickly, improving heat exchange efficiency.

[0051] Furthermore, the inlet of the second distributor 400 is coaxially arranged with the first distributor port 210. This further reduces the distance between the second distributor 400 and the heat exchange section 100, thereby further reducing the overall size of the heat exchanger 10. Specifically, the inlet of the second distributor 400 and the first distributor port 210 are connected by a vertically arranged connecting pipe.

[0052] In some embodiments, such as Figure 5 As shown, the angle between the plane containing the axis of the first straight pipe segment 310 and the axis of the second straight pipe segment 320 and the axis of the third straight pipe segment 340 is 70° to 90°. For example... Figure 5As shown, the angle α between the plane containing the axis of the first straight pipe segment 310 and the axis of the second straight pipe segment 320 and the axis of the third straight pipe segment 340 is α. Optionally, the angle α can be from 70° to 90°. Optionally, the angle α can be from 74° to 88°. Optionally, the angle α can be from 79° to 83°.

[0053] The angle between the plane containing the axis of the first straight pipe section 310 and the axis of the second straight pipe section 320 and the axis of the third straight pipe section 340 includes, but is not limited to, 70°, 71°, 74°, 79°, 83°, 84°, 88°, or 90°.

[0054] The angle between the axis of the connecting straight pipe section 330 and the axis of the third straight pipe section 340 is 130° to 150°. For example... Figure 5 As shown, the angle between the axis of the connecting straight pipe section 330 and the axis of the third straight pipe section 340 is b. Optionally, the angle b can be from 130° to 150°. Optionally, the angle b can be from 134° to 145°. Optionally, the angle b can be from 139° to 141°.

[0055] The included angle between the axis of the connecting straight pipe section 330 and the axis of the third straight pipe section 340 includes, but is not limited to, 130°, 133°, 134°, 138°, 140°, 141°, 145°, or 150°.

[0056] By setting the angle between the plane containing the axis of the first straight pipe section 310 and the axis of the second straight pipe section 320 and the axis of the third straight pipe section 340 to 70° to 90°, and setting the angle between the axis of the connecting straight pipe section 330 and the axis of the third straight pipe section 340 to 130° to 150°, the liquid distribution pipe 300 can better avoid the first liquid distribution port 210 and the connecting pipe connected to the first liquid distribution port 210, without affecting the flow of refrigerant into the corresponding refrigerant inlet 110 through the liquid distribution pipe 300.

[0057] In some embodiments, such as Figures 2-5 As shown, the upper end of the second straight pipe section 320 is connected to the upper end of the first straight pipe section 310 via a first arc-shaped pipe section 350. The lower end of the second straight pipe section 320 is connected to the corresponding end of the connecting straight pipe section 330 via a second arc-shaped pipe section 360, and the other end of the third straight pipe section 340 is connected to the corresponding end of the connecting straight pipe section 330 via a third arc-shaped pipe section 370. By using arc-shaped pipe sections to transition the connections between the second straight pipe section 320, the first straight pipe section 310, the connecting straight pipe section 330, and the third straight pipe section 340, the flow resistance of the refrigerant in the distribution pipe 300 is reduced, allowing the refrigerant to flow more smoothly in the distribution pipe 300. This ensures that the refrigerant in the distribution pipe 300 can flow into the heat exchange section 100 more quickly, thereby improving the heat exchange efficiency.

[0058] In some embodiments, the central angle of the third arcuate pipe segment 370 is 30° to 42°. For example... Figure 5 As shown, the central angle of the third arc-shaped pipe section 370 is c, so that the other end of the third straight pipe section 340 and the corresponding end of the connecting straight pipe section 330 can smoothly transition through the third arc-shaped pipe section 370, thereby reducing the resistance of the refrigerant flowing from the connecting straight pipe section 330 into the third straight pipe section 340. Optionally, the central angle of the third arc-shaped pipe section 370 is 30° to 42°. Optionally, the central angle of the third arc-shaped pipe section 370 is 33° to 40°. Optionally, the central angle of the third arc-shaped pipe section 370 is 36° to 38°.

[0059] In some embodiments, the ratio between the length of the line connecting the centers of the openings at both ends of the third arc-shaped pipe segment 370 and the length of the connecting straight pipe segment 330 is 1 / 5 to 1 / 3. This ensures that the distribution pipe 300 can smoothly avoid the connecting pipe while reducing the structural redundancy of the distribution pipe 300.

[0060] The ratio between the length of the line connecting the centers of the two openings of the third arc-shaped pipe segment 370 and the length of the connecting straight pipe segment 330 is, but is not limited to, 1 / 5, 1 / 4 or 1 / 3.

[0061] In some embodiments, the ratio between the length of the line connecting the centers of the openings at both ends of the third arc-shaped pipe segment 370 and the length of the third straight pipe segment 340 is 1 / 5 to 1 / 4. This ensures that the distribution pipe 300 can smoothly avoid the connecting pipe while reducing the structural redundancy of the distribution pipe 300.

[0062] The ratio between the length of the line connecting the centers of the two openings of the third arc-shaped pipe section 370 and the length of the third straight pipe section 340 is, but is not limited to, 1 / 5 or 1 / 3.

[0063] In some embodiments, the ratio between the distance between the axis of the first straight pipe segment 310 and the axis of the second straight pipe segment 320 and the length of the third straight pipe segment 340 is 5 / 8 to 5 / 6. This ensures that the distributor pipe 300 can better avoid the connecting pipe and avoids the distributor pipe 300 being too long, thus reducing the manufacturing cost of the heat exchanger 10 in this embodiment.

[0064] The ratio between the distance between the axis of the first straight pipe section 310 and the axis of the second straight pipe section 320 and the length of the third straight pipe section 340 is, but is not limited to, 5 / 8, 2 / 3 or 5 / 6.

[0065] In some embodiments, the ratio between the length of the second straight pipe section 320 and the length of the third straight pipe section 340 is 1 / 2 to 2 / 3. This not only allows the distributor pipe 300 to better avoid the connecting pipe, but also avoids an excessively large angle between the connecting straight pipe section 330 and the second straight pipe section 320 and the third straight pipe section 340, thereby reducing the difficulty of bending the distributor pipe 300 and reducing manufacturing costs.

[0066] In some embodiments, a one-way valve is provided between the inlet of the second distributor 400 and the first distributor port 210, allowing refrigerant to flow only from the first distributor port 210 to the inlet of the second distributor 400. This prevents refrigerant from flowing back into the first distributor 200, ensuring that the refrigerant flows evenly into the heat exchange section 100 and improving the heat exchange effect. Specifically, the distributor pipe 300 is located below the lower end face of the one-way valve.

[0067] The air conditioner 20 of this utility model is described below with reference to the accompanying drawings.

[0068] like Figure 6 As shown, the air conditioner 20 of this embodiment includes a condenser and an evaporator. The condenser is either the heat exchanger 10 of any of the above embodiments, or the evaporator is either the heat exchanger 10 of any of the above embodiments.

[0069] In this embodiment of the air conditioner 20, the second liquid distribution port 220 on the first liquid distributor 200 of the heat exchanger 10, which is far away from the heat exchange section 100, is connected to the corresponding refrigerant inlet 110 on the heat exchanger 10 through the liquid distribution pipe 300. This allows the first liquid distribution port 210, which is close to the heat exchange section 100, to be connected to the second liquid distributor 400, thus providing a prerequisite for the second liquid distributor 400 to be located close to the heat exchange section 100. Furthermore, since the liquid distribution pipe 300 is composed of a first straight pipe section 310, a second straight pipe section 320, a connecting straight pipe section 330, and a third straight pipe section 340 connected in sequence, and by making the first straight pipe section 310 and the second straight pipe section 320 vertically arranged, and the third straight pipe section 340 coaxially arranged with the refrigerant inlet 110, the liquid distribution pipe 300 can avoid the first liquid distribution port 210 and the structures connected to the first liquid distribution port 210 (such as the connecting pipe for connecting the second liquid distributor 400). This not only reduces the overall size of the heat exchanger 10, but also allows the refrigerant flowing out of the second liquid distribution port 220 to flow smoothly into the corresponding refrigerant inlet 110, ensuring the heat exchange efficiency of the heat exchanger 10. Therefore, the goal of optimizing the overall structural layout of the heat exchanger 10 is achieved.

[0070] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A heat exchanger for an air conditioner, characterized in that, include: The heat exchange section has multiple refrigerant inlets; The first distributor is disposed on the outer side of one end of the heat exchange section. The first distributor has a first dispensing port and a second dispensing port with the opening facing upward. The second dispensing port is located on the side of the first dispensing port away from the heat exchange section. The liquid distribution pipe is connected to the second liquid distribution port and one of the refrigerant inlets of the heat exchange section; and The separator includes: The first straight pipe section is vertically arranged, and the lower end of the first straight pipe section is connected to the second liquid distribution port; The second straight pipe section is set vertically, and the upper end of the second straight pipe section is connected to the upper end of the first straight pipe section. The third straight pipe section is horizontally arranged, and one end of the third straight pipe section is connected to the corresponding refrigerant inlet and is coaxially arranged with the corresponding refrigerant inlet. A connecting straight pipe section is provided, which is horizontally positioned between the lower end of the second straight pipe section and the other end of the third straight pipe section.

2. The heat exchanger according to claim 1, characterized in that, The angle between the plane containing the axis of the first straight pipe section and the axis of the second straight pipe section and the axis of the third straight pipe section is 70° to 90°. The angle between the axis of the connecting straight pipe section and the axis of the third straight pipe section is 130° to 150°.

3. The heat exchanger according to claim 1, characterized in that, The upper end of the second straight pipe section is connected to the upper end of the first straight pipe section through a first arc-shaped pipe section; The lower end of the second straight pipe section is connected to the corresponding end of the connecting straight pipe section through a second arc-shaped pipe section; The other end of the third straight pipe section is connected to the corresponding end of the connecting straight pipe section via a third arc-shaped pipe section.

4. The heat exchanger according to claim 3, characterized in that, The central angle of the third arc-shaped pipe section is 30° to 42°; The ratio between the length of the line connecting the centers of the openings at both ends of the third arc-shaped pipe segment and the length of the connecting straight pipe segment is 1 / 5 to 1 / 3. The ratio between the length of the line connecting the centers of the openings at both ends of the third arc-shaped pipe section and the length of the third straight pipe section is 1 / 5 to 1 / 4.

5. The heat exchanger according to claim 3, characterized in that, The ratio between the distance between the axis of the first straight pipe segment and the axis of the second straight pipe segment and the length of the third straight pipe segment is 5 / 8 to 5 / 6.

6. The heat exchanger according to claim 3, characterized in that, The ratio between the length of the second straight pipe section and the length of the third straight pipe section is 1 / 2 to 2 / 3.

7. The heat exchanger according to claim 1, characterized in that, Also includes: A second distributor is disposed above the first distributor; the inlet of the second distributor is connected to the first distributor port. The multiple outlets of the second distributor are respectively connected to the multiple refrigerant inlets of the heat exchange section.

8. The heat exchanger according to claim 7, characterized in that, The inlet of the second distributor is coaxially arranged with the first distributor port, and a one-way valve is provided between the inlet of the second distributor and the first distributor port, allowing refrigerant to flow only from the first distributor port to the inlet of the second distributor.

9. The heat exchanger according to claim 8, characterized in that, The separator is located below the lower end face of the one-way valve.

10. An air conditioner, characterized in that, Includes condenser and evaporator; The condenser is a heat exchanger as described in any one of claims 1 to 9, or the evaporator is a heat exchanger as described in any one of claims 1 to 9.

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