Air conditioner outdoor unit and air conditioner

Abstract

The invention belongs to the technical field of refrigeration, and particularly relates to an air conditioner outdoor unit and an air conditioner. The heat exchanger is arranged on the chassis, the heat exchanger comprises a first area and a second area which are sequentially arranged in the height direction of the heat exchanger, the first area is arranged close to one side of the chassis, the heat exchanger comprises at least one first pipe located in the first area and at least one second pipe located in the second area, and the first pipe communicates with the second pipe; the hardness of the first tube is greater than that of the second tube. The air conditioner outdoor unit can reduce the possibility of leakage of the pipeline, close to one side of the chassis, of the heat exchanger, and the reliability of the air conditioner outdoor unit is improved.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and more specifically, to an air-conditioning outdoor unit and an air conditioner. Background Art

[0002] When the outdoor unit of the air conditioner is in heating mode in winter, in order to prevent ice from forming under the heat exchanger, a plurality of long connecting pipes are usually set on the side of the heat exchanger close to the chassis as a supercooling circuit to melt the generated frost in time. The other pipes outside the supercooling circuit are used for conventional cooling / heating heat exchange. Due to the heavy weight of the heat exchanger itself, it is easy to crush the connecting pipe close to the chassis. The material of the connecting pipe is generally copper, which has low hardness and the effective thickness of the wall is generally less than 0.3mm. If foreign objects such as screws are pressed when the heat exchanger is placed, it is easy to cause the connecting pipe on the side of the chassis to crack, perforate and leak. Summary of the invention The purpose of the present application is to provide an air-conditioning outdoor unit and an air conditioner, which can reduce the possibility of leakage of the pipeline on the side of the heat exchanger close to the chassis and improve the reliability of the air-conditioning outdoor unit.

[0003] The first aspect of the present application proposes an air-conditioning outdoor unit, comprising: a chassis; a heat exchanger, which is arranged on the chassis, the heat exchanger comprising a first area and a second area arranged in sequence along its own height direction, the first area is arranged close to one side of the chassis, the heat exchanger comprises at least one first tube located in the first area and at least one second tube located in the second area, the first tube and the second tube are connected to each other, and the hardness of the first tube is greater than the hardness of the second tube.

[0004] According to the air-conditioning outdoor unit provided in the embodiment of the present application, by setting the hardness of the first tube on the side of the heat exchanger close to the chassis to be greater than the hardness of the second tube located in the area above it, the possibility of leakage in the pipeline on the side of the heat exchanger close to the chassis can be reduced, thereby improving the reliability of the air-conditioning outdoor unit.

[0005] In addition, the air conditioner outdoor unit according to the present application may also have the following additional technical features: In some embodiments of the present application, the first tube is a stainless steel tube, and the second tube is a copper tube or an aluminum tube.

[0006] In some embodiments of the present application, the heat exchanger also includes an air collecting pipe and a diverter, and the second area is provided with a plurality of tube groups, each tube group includes a plurality of second tubes connected in sequence, wherein in each tube group, one end of a second tube is connected to the air collecting pipe, one end of another second tube is connected to the diverter, and the remaining two adjacent second tubes are connected via a second bend pipe, which is a copper tube or an aluminum tube; the number of first tubes is at least two, one end of one of the first tubes is connected to the diverter, and the remaining two adjacent first tubes are connected via a first bend pipe, which is a stainless steel tube.

[0007] In some embodiments of the present application, the first tube includes a main body and a flared portion located at at least one end of the main body, the outer diameter of the flared portion is larger than the outer diameter of the main body, and the inner surface of the flared portion is copper-plated; the two ends of the first bent pipe are respectively provided with a necking portion, the outer surface of the necking portion is copper-plated, and the flared portion is sleeved on the outer periphery of the necking portion and welded as a whole.

[0008] In some embodiments of the present application, the first tube includes a main body and a flared portion located at at least one end of the main body, the outer diameter of the flared portion is larger than the outer diameter of the main body, the inner surface of the flared portion is copper-plated, and a first copper sleeve is welded thereto; necking portions are respectively provided at both ends of the first bent pipe, the outer surface of the necking portions is copper-plated, and a second copper sleeve is welded thereto, and the first copper sleeve is sleeved on the outer periphery of the second copper sleeve and welded thereto as a whole.

[0009] In some embodiments of the present application, a partition plate is provided on the chassis, and the chassis includes a fan area and a mechanical area located on both sides of the partition plate, and a heat exchange area located at the outer edge of the fan area. The heat exchange area is sunken relative to the plane where the fan area is located to form a support surface. The orthographic projection of the heat exchanger on the chassis is located in the heat exchange area, and the first area is arranged to be in contact with the support surface on one side of the chassis.

[0010] In some embodiments of the present application, at least one end of the main body of the first tube is provided with a flared portion, and the support surface is concavely formed with a concave portion corresponding to the flared portion of the adjacent first tube.

[0011] In some embodiments of the present application, a drainage groove is formed in a recessed manner on one side of the support surface away from the fan area, and the lowest point of the recessed portion is higher than the bottom wall of the drainage groove.

[0012] In some embodiments of the present application, the heat exchanger includes a first heat exchange portion and a second heat exchange portion arranged at an angle, and the first heat exchange portion and the second heat exchange portion are connected by a rounded transition; the heat exchange zone includes a first heat exchange zone and a second heat exchange zone arranged at an angle, the second heat exchange zone is arranged adjacent to the mechanical zone, the first heat exchange portion is located in the first heat exchange zone, the second heat exchange portion is located in the second heat exchange zone, the number of drainage grooves is multiple, and the multiple drainage grooves are distributed in the first heat exchange zone and the second heat exchange zone at intervals.

[0013] In some embodiments of the present application, a drainage hole is provided on the bottom wall of the drainage groove, and the orthographic projection of the heat exchanger on the chassis covers at least a portion of the drainage hole, so that the drainage hole can be connected to the air inlet side of the heat exchanger.

[0014] In some embodiments of the present application, the support surface is also provided with a first water outlet hole and a first guide groove. The first water outlet hole is arranged corresponding to the junction of the first heat exchange part and the second heat exchange part. The first guide groove connects the fan area and the first water outlet hole, and the height of the bottom wall of the first guide groove gradually decreases along the extension direction toward the first water outlet hole.

[0015] In some embodiments of the present application, a column is further provided at the junction of the first heat exchange part and the second heat exchange part. The column is located on the air inlet side of the heat exchanger, is connected to the chassis, and blocks the first water outlet.

[0016] In some embodiments of the present application, a second water outlet is further provided on the side of the support surface close to the mechanical area, and a second guide groove is further provided on the chassis. The second guide groove extends from the mechanical area to the heat exchange area and is connected to the second water outlet. The height of the bottom wall of the second guide groove gradually decreases along the extension direction toward the second water outlet; the recess is located between the second water outlet and the mechanical area, and the opposite ends of the recess are connected to the second guide groove.

[0017] In some embodiments of the present application, the chassis further includes a flange connected to the outer periphery of the chassis, and at least a portion of the flange abuts against the air inlet side of the first area of ​​the heat exchanger; and / or, the chassis further includes a stopper connected to the chassis, and the stopper abuts against the air outlet side of the first area of ​​the heat exchanger.

[0018] In some embodiments of the present application, the chassis further includes a plurality of supporting feet, which are disposed on a side of the chassis away from the heat exchanger, and the plurality of supporting feet are staggered with the plurality of drainage holes.

[0019] A second aspect of the present application provides an air conditioner, comprising an air conditioner indoor unit and an air conditioner outdoor unit of each embodiment of the present application, wherein the air conditioner outdoor unit is connected to the air conditioner indoor unit via a pipeline.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them: Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them: Figure 1 A schematic diagram of the electrical structure of an air conditioner according to an embodiment of the present application; Figure 2This is a schematic diagram of the exploded structure of an air-conditioning outdoor unit according to an embodiment of the present application; Figure 3 for Figure 2 The heat exchanger in the outdoor unit of the air conditioner and the chassis are shown along an angle; Figure 4 for Figure 2 The heat exchanger and chassis in the outdoor unit of the air conditioner are shown in another structural schematic diagram at another angle; Figure 5 for Figure 1 The structural schematic diagram of the heat exchanger in the outdoor unit of the air conditioner shown; Figure 6 for Figure 5 A schematic diagram of a partially enlarged structure of the connection between the first pipe and the first curved pipe; Figure 7 for Figure 5 Another partial enlarged structural schematic diagram of the connection between the first pipe and the first elbow; Figure 8 for Figure 3 Schematic diagram of the three-dimensional structure of the mid-chassis; Fig. 9 for Figure 8 A schematic diagram of the top view of the chassis shown; Fig.10 for Fig. 9 Section along direction AA; Fig.11 for Figure 3 Schematic diagram of the enlarged structure of the middle area B; Fig.12 for Fig.10 A schematic diagram of the top view of the structure of the middle heat exchange zone; Fig.13 for Figure 8 Schematic diagram of the enlarged structure of the middle area C; Fig.14 for Figure 8 Schematic diagram of the enlarged structure of area D in the middle.

[0022] The reference numerals in the accompanying drawings represent the following: 1000. Air conditioner; 100, air conditioner outdoor unit; 200, air conditioner indoor unit; 201, indoor heat exchanger; 1. Chassis; A1, heat exchange area; AA1, first heat exchange area; AA2, second heat exchange area; A2, fan area; A3, mechanical area; 11. upright column; 111. flange; 112. stopper; 12. Separator; 13. Support surface; 131. Drainage groove; 132. Drainage hole; 133. First water outlet hole; 134. First guide groove; 135. Second water outlet hole; 136. Second guide groove; 15. recess; 16. support foot; 161. through hole; 2. heat exchanger; 2a. fin plate; 2b. side plate; 2c. first heat exchange part; 2d. second heat exchange part; M1. first region; M2. second region; N. tube group; 21. first tube; 210. first elbow; 211. main body; 212. constriction part; 213. expansion part; 214. first copper sleeve; 215. second copper sleeve; 22. second tube; 220. second elbow; 23. gas collecting pipe; 24. flow divider; 3. Fan; 4. Compressor; 41. Exhaust pipe; 42. Intake pipe; 5. Top cover; 6. Enclosure; 61. Air outlet; 7. Gas-liquid separator; 8. Filter; 9, four-way valve; 91, first valve port; 92, second valve port; 93, third valve port; 94, fourth valve port. DETAILED DESCRIPTION The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0023] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0024] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0025] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, the element described as "below other elements or features" or "below other elements or features" will then be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0026] Figure 1 This is a schematic diagram of the electrical structure of the air conditioner according to an embodiment of the present application.

[0027] See also Figure 1 The embodiment of the present application further provides an air conditioner 1000, comprising an air conditioner indoor unit 200 and an air conditioner outdoor unit 100, wherein the air conditioner outdoor unit 100 is connected to the air conditioner indoor unit 200 through a pipeline. The air conditioner indoor unit 200 is installed indoors, and the air conditioner outdoor unit 100 is installed outdoors, and is used for cooling or heating, and transports refrigerant through pipelines, and the refrigerant performs heat exchange with indoor air and outdoor air respectively, and the air conditioner indoor unit 200 is used to transport cold air or hot air to the room to achieve the effect of cooling or heating.

[0028] Specifically, the air conditioner outdoor unit 100 includes a compressor system, a heat exchanger 2 , a fan 3 , etc. The compressor system includes a compressor 4 , a gas-liquid separator 7 , a filter 8 , a four-way valve 9 , valves and a circulation loop, etc. The air conditioner indoor unit 200 includes an indoor heat exchanger 201 . The four-way valve 9 includes a first valve port 91, a second valve port 92, a third valve port 93 and a fourth valve port 94. The first valve port 91 is connected to the exhaust pipe 41 of the compressor 4, the third valve port 93 is connected to the intake pipe 42 of the compressor 4, the second valve port 92 is connected to the inlet of the heat exchanger 2, and the fourth valve port 94 is connected to the outlet of the indoor heat exchanger. In the refrigeration cycle mode, the first valve port 91 can be connected to the second valve port 92, and the third valve port 93 is connected to the fourth valve port 94, and the refrigerant flows along the first direction in the circulation loop; in the defrost cycle mode, the first valve port 91 can be connected to the fourth valve port 94, and the second valve port 92 is connected to the third valve port 93, and the refrigerant flows along the second direction in the circulation loop, and the second direction is opposite to the first direction.

[0029] Therefore, the four-way valve 9 has two working states: when the four-way valve 9 is powered off, the air conditioner 1000 operates normally and enters the refrigeration cycle mode. After the refrigerant is discharged from the exhaust pipe 41 of the compressor 4, it flows to the heat exchanger 2 of the air-conditioning outdoor unit 100 and the indoor heat exchanger 201 of the air-conditioning outdoor unit 100 in sequence through the four-way valve 9. At this time, the heat exchanger 2 is used as a condenser to condense the high-temperature and high-pressure refrigerant discharged from the compressor 4. The indoor heat exchanger 201 is used as an evaporator to exchange heat with the indoor air through the low-temperature refrigerant, thereby outputting cold air to the room. After that, the refrigerant circulates back to the compressor 4 through the intake pipe 42.

[0030] When the four-way valve 9 is energized, the air conditioner 1000 enters the defrost cycle mode. After the refrigerant is discharged from the exhaust end of the compressor 4, it flows to the indoor heat exchanger 201 and the heat exchanger 2 of the air-conditioning outdoor unit 100 in sequence through the four-way valve 9. At this time, the indoor heat exchanger 201 is used as a condenser, and the high-temperature and high-pressure refrigerant discharged from the exhaust end of the compressor 4 exchanges heat with the indoor heat exchanger 201, thereby outputting warm air to the indoor room. The heat exchanger 2 of the air-conditioning outdoor unit 100 is used as an evaporator, and then the refrigerant circulates back to the compressor 4 through the intake pipe 42.

[0031] In the related art, when the outdoor unit of the air conditioner is in heating mode in winter, in order to prevent ice from forming under the heat exchanger, a plurality of longer connecting pipes are usually arranged on the side of the heat exchanger close to the chassis as a supercooling circuit to melt the generated frost in time. The other pipes outside the supercooling circuit are used for conventional heat exchange for cooling / heating. Due to the heavy weight of the heat exchanger itself, it is easy to crush the connecting pipe close to the chassis. The material of the connecting pipe is generally copper, which has low hardness and the effective thickness of the wall is generally less than 0.3mm. If foreign objects such as screws are pressed when the heat exchanger is placed, it is easy to cause the connecting pipe on the side of the chassis to crack, perforate and leak.

[0032] To this end, the air-conditioning outdoor unit 100 provided in the embodiment of the present application can reduce the possibility of leakage in the pipeline on the side of the heat exchanger 2 close to the chassis 1, thereby improving the reliability of the air-conditioning outdoor unit.

[0033] Figure 2 This is a schematic diagram of the exploded structure of an air conditioner outdoor unit according to an embodiment of the present application. Figure 3 for Figure 2 The heat exchanger in the outdoor unit of the air conditioner and the chassis are shown in the structural diagram along an angle. Figure 4 for Figure 2 The heat exchanger and chassis in the outdoor unit of the air conditioner are shown in the structural diagram at another angle. Figure 5 for Figure 2 Schematic diagram of the structure of the heat exchanger in the air conditioner outdoor unit shown.

[0034] Please also read Figures 2 to 5 The air conditioner outdoor unit 100 provided in the embodiment of the present application includes a chassis 1 and a heat exchanger 2 arranged on the chassis 1.

[0035] After the heat exchanger 2 is placed on the chassis 1, the heat exchanger 2 is fixed to the chassis 1 by means of buckles or screws to ensure the stability of the chassis 1 supporting the heat exchanger 2. The heat exchanger 2 includes a first area M1 and a second area M2 sequentially arranged along its height direction. The first area M1 is arranged close to one side of the chassis 1. The heat exchanger 2 includes at least one first tube 21 located in the first area M1 and at least one second tube 22 located in the second area M2. The hardness of the first tube 21 is greater than the hardness of the second tube 22.

[0036] In this embodiment, the air-conditioning outdoor unit 100 further includes a fan 3 and a compressor 4, and the heat exchanger 2 further includes a fin plate 2a and a side plate 2b arranged opposite to each other, and the first tube 21 and the second tube 22 are located between the fin plate 2a and the side plate 2b. The air inlet side of the heat exchanger 2, i.e., the side where the side plate 2b is located, is located outside the air-conditioning outdoor unit 100, and the air outlet side of the heat exchanger 2, i.e., the side where the fin plate 2a is located, is located inside the air-conditioning outdoor unit 100. The air-conditioning outdoor unit 100 further includes a top cover 5 and a vertically extending enclosure 6, and the chassis 1 cooperates with the enclosure 6 and the top cover 5 to form an accommodating space, so that the heat exchanger 2, the fan 3 and the compressor 4 are all located in the accommodating space. The enclosure 6 is provided with an air outlet 61, and the fan 3 may be an axial flow fan 3, which is fixed on the chassis 1 by a bracket. The axial flow fan 3 is located on the side where the fin plate 2a of the heat exchanger 2 is located, so that the rotation of the fan 3 allows the external airflow to pass through the side where the side plate 2b of the heat exchanger 2 is located, and then be blown out to the outdoor environment from the air outlet 61 after heat exchange.

[0037] like Figure 5As shown, the first area M1 and the second area M2 of the heat exchanger 2 are filled with different shadow patterns, respectively, and the heat exchanger 2 includes at least one first tube 21 in the first area M1 and at least one second tube 22 in the second area M2, and the structure of the first tube 21 is similar to that of the second tube 22. Optionally, the number of the first tubes 21 can be 1 to 6, and the number of the second tubes 22 can be more, without limitation, and depends on the power of the heat exchanger 2.

[0038] In winter heating conditions, in order to prevent the chassis 1 below the heat exchanger 2 from freezing, multiple first tubes 21 are usually set as supercooling circuits to melt the frost generated on the chassis 1 in time, and the second tubes 22 are generally used for conventional cooling / heating heat exchange. Due to the large weight of the heat exchanger 2 itself, the hardness of the first tube 21 set in the first area M1 of the heat exchanger 2 close to the chassis 1 is greater than the hardness of the second tube 22 set in the second area M2 above it, so that the first tube 21 is not easily crushed by the second tube 22 above it, and even if the first tube 21 presses foreign objects such as screws, it is not easy to cause cracking, perforation and leakage.

[0039] According to the air-conditioning outdoor unit 100 provided in the embodiment of the present application, by setting the hardness of the first tube 21 of the heat exchanger 2 close to the chassis 1 to be greater than the hardness of the second tube 22 located in the area above it, the possibility of leakage in the pipeline close to the chassis 1 side of the heat exchanger 2 can be reduced, thereby improving the reliability of the air-conditioning outdoor unit 100.

[0040] In some embodiments, the first tube 21 is a stainless steel tube, and the second tube 22 is a copper tube or an aluminum tube. The hardness of the stainless steel tube is greater than that of the copper tube or the aluminum tube, which can reduce the possibility of cracking, perforation and leakage of the first tube 21.

[0041] In some embodiments, the heat exchanger 2 also includes an air collecting pipe 23 and a diverter 24, and the second area M2 is provided with a plurality of tube groups N, each tube group N includes a plurality of second tubes 22 connected in sequence, wherein in each tube group N, one end of a second tube 22 is connected to the air collecting pipe 23, one end of another second tube 22 is connected to the diverter 24, and the remaining two adjacent second tubes 22 are connected through a second bend 220, and the second bend 220 is a copper tube or an aluminum tube; the number of first tubes 21 is at least two, one end of one of the first tubes 21 is connected to the diverter 24, and the remaining two adjacent first tubes 21 are connected through a first bend 210, and the first bend 210 is a stainless steel tube.

[0042] like Figure 1 and Figure 5As shown, when the air conditioner 1000 is cooling, the heat exchanger 2 is used as a condenser, the indoor heat exchanger 201 is used as an evaporator, and the air collecting pipe 23 is used to collect the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust pipe 41 of the compressor 4, and then transport it to the multiple second tubes 22 of the multiple tube groups N in the second area M2, wherein in each tube group N, one end of a second tube 22 is connected to the air collecting pipe 23, and one end of another second tube 22 is connected to the diverter 24, and the other two adjacent second tubes 22 are connected through the second elbow 220, and the second tube 22 and the second elbow 220 are both copper tubes or They are all aluminum tubes. Through the rotation of the fan 3, the external airflow exchanges heat with the high-temperature and high-pressure gaseous refrigerant in the multiple second tubes 22, so that at least part of the high-temperature and high-pressure gaseous refrigerant is condensed into low-temperature liquid refrigerant. The low-temperature liquid refrigerant converges to the diverter 24 and flows into at least two first tubes 21 in the first area M1. The two adjacent first tubes 21 are connected by the first bend pipe 210. The first tube 21 and the first bend pipe 210 are both stainless steel tubes. Heat exchange is performed with the indoor heat exchanger 201 through the low-temperature liquid refrigerant, thereby outputting cold air to the room. The refrigerant finally returns to the compressor 4 through the intake pipe 42.

[0043] In addition, at least two first tubes 21 and a first bend tube 210 in the first area M1 of the heat exchanger 2 close to the chassis 1 are used to melt the frost generated in the chassis 1 in time. At the same time, the first tube 21 and the first bend tube 210 are both stainless steel tubes with high hardness. Even if the first tube 21 or the first bend tube 210 is pressed by foreign objects such as screws, it is not easy to cause cracking, perforation and leakage. When the air conditioner 1000 is heating, the indoor heat exchanger 201 is used as a condenser and the heat exchanger 2 is used as an evaporator. The high-temperature and high-pressure gaseous refrigerant discharged from the exhaust pipe 41 of the compressor 4 exchanges heat with the indoor heat exchanger 201, releasing warm air into the room, so that at least part of the high-temperature and high-pressure gaseous refrigerant is condensed into low-temperature liquid refrigerant. The low-temperature liquid refrigerant enters the diverter 24 through at least two first tubes 21 of the first area M1, and enters the multiple second tubes 22 of the multiple tube groups N of the second area M2 through the diverter 24, and then converges to the collecting pipe 23. The refrigerant finally returns to the compressor 4 through the intake pipe 42. Figure 6 for Figure 5 A schematic diagram of a local enlarged structure of the connection between the first pipe and the first curved pipe.

[0044] In some embodiments, the first tube 21 includes a main body 211 and a flared portion 213 located at at least one end of the main body 211, the outer diameter of the flared portion 213 is larger than the outer diameter of the main body 211, and the inner surface of the flared portion 213 is copper-plated; the two ends of the first curved tube 210 are respectively provided with a necked portion 212, the outer surface of the necked portion 212 is copper-plated, and the flared portion 213 is sleeved on the outer periphery of the necked portion 212 and welded as a whole.

[0045] like Figure 5 and Figure 6 As shown, the first tube 21 and the first elbow 210 are connected by welding, and the materials of the first tube 21 and the first elbow 210 are both stainless steel, which is not easy to weld. In order to improve the welding performance of the first tube 21 and the first elbow 210 at the connection, the first tube 21 includes a main body 211 and a flared portion 213 located at at least one end of the main body 211, and the two ends of the first elbow 210 are respectively provided with a constricted portion 212, the inner surface of the flared portion 213 is copper-plated, and the outer surface of the constricted portion 212 is copper-plated. The flared portion 213 is sleeved on the outer periphery of the constricted portion 212, and the connecting surfaces of the two are respectively copper-plated, which is convenient for welding the two into one, and also improves the connection sealing of the first tube 21 and the first elbow 210.

[0046] It is understandable that the second tube 22 and the second bend tube 210 are welded and connected in a similar manner. The difference is that the second tube 22 and the second bend tube 210 are both copper tubes or aluminum tubes, which have better welding performance and the copper plating process of the inner surface of the expanded part and the outer surface of the contracted part can be omitted.

[0047] Figure 7 for Figure 5 Another partial enlarged structural schematic diagram of the connection between the first pipe and the first curved pipe.

[0048] In some embodiments, at least one end of the main body 211 of the first tube 21 is provided with a flared portion 213, the outer diameter of the flared portion 213 is larger than the outer diameter of the main body 211, the inner surface of the flared portion 213 is copper-plated, and a first copper sleeve 214 is welded thereto; both ends of the first curved tube 210 are respectively provided with a necked portion 212, the outer surface of the necked portion 212 is copper-plated, and a second copper sleeve 215 is welded thereto, and the first copper sleeve 214 is sleeved on the outer periphery of the second copper sleeve 215 and welded thereto as a whole.

[0049] like Figure 5 and Figure 7 As shown, the inner surface of the expanded portion 213 of the first tube 21 is copper-plated and welded to the first copper sleeve 214, the outer surface of the contracted portion 212 of the first elbow 210 is copper-plated and welded to the second copper sleeve 215, and the first copper sleeve 214 is sleeved on the outer circumference of the second copper sleeve 215 and welded as a whole. Since the welding performance of copper tubes is better, the pressure resistance at the weld is stronger, which is suitable for welding at places with higher pressure, and can further improve the welding performance and sealing performance of the first tube 21 and the first elbow 210 at the connection.

[0050] Figure 8 for Figure 3 Schematic diagram of the three-dimensional structure of the mid-chassis. Fig. 9 for Figure 8 A schematic diagram of the top view of the chassis shown; Fig.10 for Fig. 9 Cross-section along direction AA.

[0051] In some embodiments, a partition plate 12 is provided on the chassis 1, and the chassis 1 includes a fan area A2 and a mechanical area A3 located on both sides of the partition plate 12, and a heat exchange area A1 located at the outer edge of the fan area A2. The heat exchange area A1 is sunken relative to the plane where the fan area A2 is located to form a support surface 13. The orthographic projection of the heat exchanger 2 on the chassis 1 is located in the heat exchange area A1, and the first area M is arranged to be in contact with the support surface 13 on one side of the chassis 1.

[0052] like Figures 8 to 10 As shown, the chassis 1 includes a heat exchange area A1, a fan area A2 and a mechanical area A3, and the heat exchange area A1, the fan area A2 and the mechanical area A3 are filled with different shadow patterns, wherein the heat exchange area A1 is located at the outer edge of the fan area A2, and a partition plate 12 (such as Figure 2 As shown in the figure, the orthographic projection of the heat exchanger 2 on the chassis 1 is located in the heat exchange area A1, the orthographic projection of the fan 3 on the chassis 1 is located in the fan area A2, and the orthographic projection of the compressor system on the chassis 1 is located in the mechanical area A3. The heat exchange area A1 is sunken relative to the plane where the fan area A2 is located to form a support surface 13, and the first area M is arranged in contact with the support surface 13 on the side facing the chassis 1. Among them, the plane where the fan area A2 is located refers to the plane where the lowest area of ​​the fan area A2 is located. Since the support surface 13 of the heat exchange area A1 is lower than the plane where the fan area A2 is located, it can be avoided that the condensed water generated by the heat exchanger 2 during operation flows into the fan area A2 under the action of gravity and contacts the fan 3, thereby reducing the possibility of a short circuit in the circuit part of the air-conditioning outdoor unit 100 due to the condensed water thrown out by the fan 3.

[0053] Fig.11 for Figure 3 Schematic diagram of the enlarged structure of area B in the middle.

[0054] In some embodiments, at least one end of the main body 211 of the first tube 21 is provided with a flared portion 213 , and the support surface 13 is provided with a recessed portion 15 corresponding to the flared portion 213 of the adjacent first tube 21 .

[0055] like Figure 6 As shown, the flared portion 213 of the first tube 21 is used to connect with the first curved tube 210, and the outer diameter of the flared portion 213 is greater than the outer diameter of the main body 211. Fig.10 and Fig.11 As shown, the support surface 13 is concavely provided with a recess 15 corresponding to the flared portion 213 of the adjacent first tube 21, and the recess 15 can avoid structural interference between the flared portion 213 and the support surface 13, thereby improving the wear resistance of the flared portion 213. The number of the recesses 15 can be one or more, depending on the number of the first tubes 21 adjacent to the support surface 13.

[0056] In some embodiments, a drainage groove 131 is formed on one side of the support surface 13 away from the fan area A2 , and the lowest point of the recess 15 is higher than the bottom wall of the drainage groove 131 .

[0057] like Fig.10 and Fig.11 As shown, a plurality of drainage grooves 131 are formed on one side of the support surface 13 away from the fan area A2. The shape of the drainage grooves 131 can be arranged in a strip shape along the extension direction of the heat exchanger 2, or can be a regular shape such as a circle or rectangle, so as to be arranged regularly on the chassis 1. Condensed water generated by the heat exchanger 2 during operation or ice water melted at the chassis 1 can flow from the support surface 13 to the drainage grooves 131, preventing the condensed water from accumulating and freezing at the support surface 13 and contacting the first tube 21 of the heat exchanger 2 for a long time. In addition, the lowest point of the recess 15 is higher than the bottom wall of the drainage groove 131, which can prevent the accumulation of water and ice at the recess 15 and improve the drainage effect of the condensed water.

[0058] Fig.12 for Fig.10 Schematic diagram of the top view of the structure of the middle heat exchange zone.

[0059] In some embodiments, the heat exchanger 2 includes a first heat exchange portion 2c and a second heat exchange portion 2d which are arranged at an angle, and the first heat exchange portion 2c and the second heat exchange portion 2d are connected by a rounded transition; the heat exchange area A1 includes a first heat exchange area AA1 and a second heat exchange area AA2 which are arranged at an angle, the second heat exchange area AA2 is arranged adjacent to the mechanical area A3, the first heat exchange portion 2c is located in the first heat exchange area AA1, the second heat exchange portion 2d is located in the second heat exchange area AA2, and there are multiple drainage grooves 131, and the multiple drainage grooves 131 are distributed at intervals in the first heat exchange area AA1 and the second heat exchange area AA2.

[0060] like Figure 3 and Figure 4 As shown, the first heat exchange portion 2c and the second heat exchange portion 2d of the heat exchanger 2 can be arranged at a right angle, so as to increase the contact area between the air inlet side of the heat exchanger 2 and the outside. Fig.12 As shown, the first heat exchange part 2c is located in the first heat exchange area AA1, the second heat exchange part 2d is located in the second heat exchange area AA2, three drainage grooves 131 are distributed in the first heat exchange area AA1, and two drainage grooves 131 are distributed in the second heat exchange area AA2, which can respectively discharge the condensed water generated by the first heat exchange part 2c and the second heat exchange part 2d to improve the drainage efficiency. The number of drainage grooves 131 can also be other, according to the spatial arrangement of the chassis 1.

[0061] In some embodiments, a drainage hole 132 is formed on the bottom wall of the drainage groove 131 , and the orthographic projection of the heat exchanger 2 on the chassis 1 covers at least part of the drainage hole 132 , so that the drainage hole 132 can be connected to the air inlet side of the heat exchanger 2 .

[0062] like Fig.10 and Fig.12 As shown, there are five drain grooves 131, and the bottom wall of each drain groove 131 is provided with a drain hole 132, so that the condensed water or melted ice water flowing into the drain groove 131 can be discharged to the outside through the drain hole 132, and the water in the drain groove 131 can be prevented from overflowing and flowing back to the support surface 13. The orthographic projection of the heat exchanger 2 on the chassis 1 is shown in FIG. Fig.12 As shown in the dashed box in the shaded part, since the drainage hole 132 is connected to the air on the air inlet side of the heat exchanger 2, the air circulation at the bottom of the heat exchanger 2 is better, and it is not easy to form a large negative pressure at the drainage hole 132, which prevents the condensed water from spreading along the air flow direction and being unable to be discharged in time, greatly reducing the difficulty of draining the condensed water at the drainage hole 116, improving the drainage efficiency of the drainage hole 132, and preventing the external accumulated water from being sucked back to the support surface 13 through the drainage hole 132, so that outsiders can easily observe the blockage of the drainage hole 132, ensure the stable drainage function of the drainage hole 132, and improve the technical problem of poor drainage of the drainage hole 132. When one of the drainage holes 132 is blocked, the condensed water can also be discharged to the outside through the drainage holes 132 of other drainage grooves 131, thereby preventing local drainage failure and ensuring drainage efficiency.

[0063] Fig.13 for Figure 8 Schematic diagram of the enlarged structure of area C in the middle. Fig.14 for Figure 8 Schematic diagram of the enlarged structure of area D in the middle.

[0064] In some embodiments, the bottom wall of the support surface 13 is also provided with a first water outlet hole 133 and a first guide groove 134. The first water outlet hole 133 is arranged corresponding to the junction of the first heat exchange part 2c and the second heat exchange part 2d. The first guide groove 134 connects the fan area A2 and the first water outlet hole 133. The height of the bottom wall of the first guide groove 134 gradually decreases along the extension direction toward the first water outlet hole 133.

[0065] like Figure 8 and Fig.14 As shown, the first water outlet 133 can not only be used to discharge the condensed water at the junction of the first heat exchange part 2c and the second heat exchange part 2d, but also can guide the condensed water in the fan area A2 to be discharged to the first water outlet 133 through the first guide groove 134. Since the height of the bottom wall of the first guide groove 134 gradually decreases along the extension direction toward the first water outlet 133, the flow rate of the condensed water guided to the first water outlet 133 can be further increased.

[0066] Furthermore, if Fig.12 As shown, the orthographic projection of the heat exchanger 2 on the chassis 1 is as follows Fig.12 As shown in the dashed box in the shaded part, at least part of the first water outlet 133 is exposed on the air inlet side of the heat exchanger 2 and is connected to the air on the air inlet side of the heat exchanger 2. In this way, it is not easy to form a large negative pressure at the first water outlet 133, which greatly reduces the difficulty of draining the condensed water at the first water outlet 133, ensures the drainage efficiency, and prevents the external accumulated water from being sucked back into the chassis 1 through the first water outlet 133, and makes it easy for outsiders to observe the blockage of the first water outlet 133.

[0067] In some embodiments, a column 11 is further provided at the junction of the first heat exchange portion 2c and the second heat exchange portion 2d. The column 11 is located on the air inlet side of the heat exchanger 2 , is connected to the chassis 1 , and blocks the first water outlet 133 .

[0068] like Figure 3 and Fig.12 As shown, the column 11 can be fixed to the junction of the first heat exchange part 2c and the second heat exchange part 2d of the heat exchanger 2 by means of buckles or screw connections, so as to improve the structural strength of the heat exchanger 2. The column 11 can also be connected to the top cover 5 of the air-conditioning outdoor unit 100, so as to provide support and reduce the force on the heat exchanger 2. At the same time, the column 11 extends to the junction of the first heat exchange part 2c and the second heat exchange part 2d and blocks the first water outlet 133, so as to prevent the first water outlet 133 from being blocked by debris such as leaves and soil, and ensure the normal drainage function of the first water outlet 133.

[0069] In some embodiments, a second water outlet hole 135 is further provided on the side of the support surface 13 close to the mechanical area A3, and a second guide groove 136 is further provided on the chassis 1. The second guide groove 136 extends from the mechanical area A3 to the heat exchange area A1 and is connected to the second water outlet hole 135. The height of the bottom wall of the second guide groove 136 gradually decreases along the extension direction toward the second water outlet hole 135; the recess 15 is located between the second water outlet hole 135 and the mechanical area A3, and the opposite ends of the recess 15 are connected to the second guide groove 136.

[0070] like Fig. 9 and Fig.13 As shown, the second guide groove 136 extends from the mechanical area A3 to the heat exchange area A1 and is connected to the second water outlet 135, so that the condensed water and other accumulated water in the mechanical area A3 can be discharged from the second water outlet 135 along the second guide groove 136. Fig. 9The direction indicated by the dotted arrow in the figure is the direction of water flow, so there is no need to open a through hole in the mechanical area A3 for drainage, so as to prevent foreign objects such as insects from easily entering the mechanical area A3 and causing damage to the compressor 4 and other equipment. The height of the bottom wall of the second guide groove 136 gradually decreases along the extension direction toward the second water outlet 135, so that the flow rate of the accumulated water in the second guide groove 136 can be further increased to prevent condensed water and other accumulated water from staying in the mechanical area A3 of the chassis 1 for too long. Optionally, the second guide groove 136 extends in a circumferential tortuous manner in the mechanical area A3, so as to facilitate the collection of condensed water and other accumulated water at various positions in the mechanical area A3.

[0071] Furthermore, if Fig.13 As shown, the recess 15 is located between the second water outlet 135 and the mechanical area A3, and the opposite ends of the recess 15 are connected to the second guide groove 136. By forming the recess 15 at the bottom wall of the support surface 13 to connect the second guide groove 136, the flow rate from the second guide groove 136 to the second water outlet 135 can be increased, thereby improving the drainage efficiency of the condensed water and other accumulated water in the mechanical area A3.

[0072] In some embodiments, the chassis 1 also includes a flange 111, which is connected to the outer periphery of the chassis 1, and at least a portion of the flange 111 abuts against the air inlet side of the first area M1 of the heat exchanger 2; and / or, the chassis 1 also includes a stopper 112, which is connected to the chassis 1, and the stopper 112 abuts against the air outlet side of the first area M1 of the heat exchanger 2.

[0073] like Figure 4 As shown, the air inlet side of the first area M1 of the heat exchanger 2 is provided with a side plate 2b, and the air outlet side of the first area M1 is provided with a fin plate 2a. The flange 111 can be an integral structure with the chassis 1, so as to ensure the stability of the flange 111 abutting against the side plate 2b, thereby improving the stability of the heat exchanger 2 on the chassis 1. In addition, the flange 111 can also be connected and limited with other components supported on the chassis 1. In addition, a mounting hole can be provided on the column 11, and a corresponding connecting hole can be provided on the flange 111, and screws and other connecting parts are passed through the mounting hole and the connecting hole in sequence for fixing. Optionally, a convex rib is provided on the surface of the flange 111 facing the column 11, and the convex rib abuts against the surface of the column 11 away from the air inlet side. In this way, the convex rib is provided to abut against the column 11 to further improve the stability of the column 11 after installation.

[0074] like Figure 3 and Fig.10As shown, the fan area A2 of the chassis 1 is formed with a fixing groove, and the stopper 112 can be connected to the fixing groove of the chassis 1 by screws or welding, and is arranged opposite to the flange 111, so that the heat exchanger 2 is placed on the chassis 1, and the fin plate 2a and the side plate 2b of the heat exchanger 2 are abutted by the stopper 112 and the flange 111, so as to fix the heat exchanger 2 and ensure the stability of the heat exchanger 2 on the chassis 1. The stopper 112 can be a sheet metal part to improve the abutment strength. At the same time, in order to further improve the abutment strength, the number of the stopper 112 can be multiple, which can be specifically set according to the application scenario.

[0075] In some embodiments, the chassis 1 further includes a plurality of supporting legs 16 , which are disposed on a side of the chassis 1 away from the heat exchanger 2 , and the plurality of supporting legs 16 are staggered with the plurality of drainage holes 132 .

[0076] like Figure 8 and Fig. 9 As shown, the six support legs 16 can be connected to the surface of the chassis 1 away from the heat exchanger 2 by means of screws or buckles, and the support legs 16 can be placed on the external support surface, so that there is a gap between the chassis 1 and the external support surface, and the six support legs 16 and the five drainage holes 132 are staggered, so as to facilitate the drainage smoothness of the drainage holes 132. In addition, the support legs 16 can also be provided with through holes 161, so as to facilitate the drainage of the accumulated water above the support legs 16 to the outside.

[0077] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0078] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An air conditioner outdoor unit, characterized in that: include: Chassis; A heat exchanger is arranged on the chassis, the heat exchanger includes a first area and a second area arranged in sequence along its own height direction, the first area is arranged close to one side of the chassis, the heat exchanger includes at least one first tube located in the first area and at least one second tube located in the second area, the first tube and the second tube are connected to each other, and the hardness of the first tube is greater than the hardness of the second tube.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The first tube is a stainless steel tube, and the second tube is a copper tube or an aluminum tube.

3. The air conditioner outdoor unit according to claim 2, characterized in that: The heat exchanger further includes a gas collecting pipe and a flow divider, the second area is provided with a plurality of tube groups, each of the tube groups includes a plurality of second tubes connected in sequence, wherein in each of the tube groups, one end of one second tube is connected to the gas collecting pipe, one end of another second tube is connected to the flow divider, and the other two adjacent second tubes are connected via a second elbow, and the second elbow is a copper tube or an aluminum tube; The number of the first tubes is at least two, one end of one of the first tubes is connected to the diverter, and the other two adjacent first tubes are connected via a first bent tube, and the first bent tube is a stainless steel tube.

4. The air conditioner outdoor unit according to claim 3, characterized in that: The first tube comprises a main body and a flared portion located at at least one end of the main body, the outer diameter of the flared portion is larger than the outer diameter of the main body, and the inner surface of the flared portion is copper-plated; Both ends of the first curved pipe are respectively provided with a necking portion, the outer surface of the necking portion is copper-plated, and the expanding portion is sleeved on the outer circumference of the necking portion and welded into one body.

5. The air conditioner outdoor unit according to claim 3, characterized in that: The first tube comprises a main body and a flared portion located at at least one end of the main body, the outer diameter of the flared portion is larger than the outer diameter of the main body, the inner surface of the flared portion is copper-plated and welded with a first copper sleeve; Both ends of the first elbow are respectively provided with a necking portion, the outer surface of the necking portion is copper-plated and welded with a second copper sleeve, and the first copper sleeve is sleeved on the outer periphery of the second copper sleeve and welded as a whole.

6. The air conditioner outdoor unit according to any one of claims 1 to 5, characterized in that: A partition plate is arranged on the chassis, and the chassis includes a fan area and a mechanical area located on both sides of the partition plate, and a heat exchange area located at the outer edge of the fan area. The heat exchange area is sunken relative to the plane where the fan area is located to form a supporting surface. The orthographic projection of the heat exchanger on the chassis is located in the heat exchange area, and the first area is arranged to be in contact with the supporting surface on one side of the chassis.

7. The air conditioner outdoor unit according to claim 6, characterized in that: At least one end of the main body of the first tube is provided with a flared portion, and the support surface is provided with a recessed portion corresponding to the flared portion of the adjacent first tube.

8. The air conditioner outdoor unit according to claim 7, characterized in that: A drainage groove is formed on one side of the support surface away from the fan area, and the lowest point of the recess is higher than the bottom wall of the drainage groove.

9. The air conditioner outdoor unit according to claim 8, characterized in that: The heat exchanger comprises a first heat exchange portion and a second heat exchange portion which are arranged at an angle, and the first heat exchange portion and the second heat exchange portion are connected by a rounded transition; The heat exchange zone includes a first heat exchange zone and a second heat exchange zone which are arranged at an angle, the second heat exchange zone is arranged adjacent to the mechanical zone, the first heat exchange part is located in the first heat exchange zone, the second heat exchange part is located in the second heat exchange zone, and there are multiple drainage grooves, which are distributed in the first heat exchange zone and the second heat exchange zone at intervals.

10. The air conditioner outdoor unit according to claim 9, characterized in that: A drainage hole is formed on the bottom wall of the drainage groove, and the orthographic projection of the heat exchanger on the chassis covers at least a portion of the drainage hole, so that the drainage hole can be connected to the air inlet side of the heat exchanger.

11. The air conditioner outdoor unit according to claim 9, characterized in that: The support surface is also provided with a first water outlet hole and a first guide groove. The first water outlet hole is arranged corresponding to the junction of the first heat exchange part and the second heat exchange part. The first guide groove connects the fan area and the first water outlet hole, and the height of the bottom wall of the first guide groove gradually decreases along the extension direction toward the first water outlet hole.

12. The air conditioner outdoor unit according to claim 11, characterized in that: A column is also provided at the junction of the first heat exchange part and the second heat exchange part. The column is located on the air inlet side of the heat exchanger. The column is connected to the chassis and blocks the first water outlet.

13. The air conditioner outdoor unit according to claim 7, characterized in that: A second water outlet is also provided on a side of the support surface close to the mechanical area, and a second guide groove is also provided on the bottom plate. The second guide groove extends from the mechanical area to the heat exchange area and is connected to the second water outlet. The height of the bottom wall of the second guide groove gradually decreases along the extension direction toward the second water outlet. The recessed portion is located between the second water outlet and the mechanical area, and opposite ends of the recessed portion are connected to the second guide groove.

14. The air conditioner outdoor unit according to claim 6, characterized in that: The chassis further comprises a flange, the flange being connected to the outer periphery of the chassis, and at least a portion of the flange being in contact with the air inlet side of the first region of the heat exchanger; And / or, the chassis further includes a stopper, the stopper is connected to the chassis, and the stopper abuts against an air outlet side of the first area of ​​the heat exchanger.

15. The air conditioner outdoor unit according to claim 10, characterized in that: The chassis further comprises a plurality of supporting feet, wherein the supporting feet are arranged on a side of the chassis away from the heat exchanger, and the plurality of supporting feet are staggered with the plurality of drainage holes.

16. An air conditioner, characterized in that: It comprises an air-conditioning indoor unit and an air-conditioning outdoor unit as claimed in any one of claims 1 to 15, wherein the air-conditioning outdoor unit is connected to the air-conditioning indoor unit through a pipeline.

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