Outdoor unit of air conditioner and air conditioner

Abstract

This application belongs to the field of refrigeration technology, and particularly relates to an outdoor unit of an air conditioner and an air conditioner. The outdoor unit of the air conditioner includes: a chassis; a heat exchanger disposed on the chassis. The heat exchanger includes a first region and a second region sequentially arranged along its height direction. The first region is disposed closer to the chassis side. The heat exchanger includes at least one first pipe located in the first region and at least one second pipe located in the second region. The first pipe and the second pipe are interconnected, and the hardness of the first pipe is greater than that of the second pipe. The outdoor unit of the air conditioner in this application 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 outdoor unit of the air conditioner.

Description

Technical Field

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

[0002] When the outdoor unit of an air conditioner is in the heating mode in winter, in order to prevent icing under the heat exchanger, usually a plurality of relatively long connecting pipes are arranged on the side of the heat exchanger close to the chassis as a subcooling circuit to timely melt the generated ice and frost. Other pipes outside the subcooling circuit are used for conventional refrigeration / heating heat exchange. Since the heat exchanger itself has a large weight and is likely to crush the connecting pipes close to the chassis, the material of the connecting pipes is generally copper, with low hardness, and the effective thickness of the wall thickness is generally less than 0.3 mm. If foreign objects such as screws are pressed when placing the heat exchanger, it is very easy to cause the connecting pipes on the chassis side to crack and perforate, resulting in leakage. Summary of the Invention

[0003] The purpose of the present application is to provide an outdoor unit of an air conditioner and an air conditioner, which can reduce the possibility of leakage of the pipes on the side of the heat exchanger close to the chassis and improve the reliability of the outdoor unit of the air conditioner.

[0004] A first aspect of the present application provides an outdoor unit of an air conditioner, including: a chassis; a heat exchanger disposed on the chassis, the heat exchanger including a first region and a second region sequentially arranged along its height direction, the first region being disposed close to the chassis side, the heat exchanger including at least one first pipe located in the first region and at least one second pipe located in the second region, the first pipe and the second pipe being interconnected, and the hardness of the first pipe being greater than that of the second pipe.

[0005] According to the outdoor unit of an air conditioner provided by the embodiments of the present application, by setting the hardness of the first pipe on the side of the heat exchanger close to the chassis to be greater than that of the second pipe in the region above it, the possibility of leakage of the pipes on the side of the heat exchanger close to the chassis can be reduced, and the reliability of the outdoor unit of the air conditioner can be improved.

[0006] In addition, according to the outdoor unit of an air conditioner of the present application, the following additional technical features may also be provided:

[0007] In some embodiments of the present application, the first pipe is a stainless steel pipe, and the second pipe is a copper pipe or an aluminum pipe.

[0008] In some embodiments of the present application, the heat exchanger further includes a gas collecting pipe and a flow divider. The second region is provided with a plurality of tube groups, and each tube group includes a plurality of second tubes connected in sequence. Among them, in each tube group, one end of a second tube is connected to the gas collecting pipe, one end of another second tube is connected to the flow divider, and the remaining adjacent two second tubes are communicated through a second elbow. 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 flow divider, and the remaining adjacent two first tubes are communicated through a first elbow. The first elbow is a stainless steel tube.

[0009] In some embodiments of the present application, the first tube includes a main body portion and a flared portion located at at least one end of the main body portion. The outer diameter of the flared portion is larger than the outer diameter of the main body portion, and the inner surface of the flared portion is copper-plated; the two ends of the first elbow are respectively provided with a reduced diameter portion, the outer surface of the reduced diameter portion is copper-plated, and the flared portion is sleeved on the outer periphery of the reduced diameter portion and welded into one body.

[0010] In some embodiments of the present application, the first tube includes a main body portion and a flared portion located at at least one end of the main body portion. The outer diameter of the flared portion is larger than the outer diameter of the main body portion, the inner surface of the flared portion is copper-plated, and a first copper sleeve is welded; the two ends of the first elbow are respectively provided with a reduced diameter portion, the outer surface of the reduced diameter portion is copper-plated, and a second copper sleeve is welded. The first copper sleeve is sleeved on the outer periphery of the second copper sleeve and welded into one body.

[0011] In some embodiments of the present application, a partition plate is provided on the chassis. 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 side of the first region facing the chassis is attached to the support surface.

[0012] In some embodiments of the present application, at least one end of the main body portion of the first tube is provided with a flared portion, and the support surface is recessed to form a concave portion corresponding to the flared portion of the adjacent first tube.

[0013] In some embodiments of the present application, a drain groove is recessed on the side of the support surface away from the fan area, and the lowest point of the concave portion is higher than the bottom wall of the drain groove.

[0014] 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 fillet transition; the heat exchange area includes a first heat exchange area and a second heat exchange area arranged at an angle. The second heat exchange area is adjacent to the mechanical area. The first heat exchange portion is located in the first heat exchange area, the second heat exchange portion is located in the second heat exchange area, and the number of the drain grooves is multiple. The multiple drain grooves are spaced apart and distributed in the first heat exchange area and the second heat exchange area.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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

[0023] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. Among them:

[0024] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. Among them:

[0025] Figure 1 It is a schematic electrical structure diagram of an air conditioner according to an embodiment of the present application;

[0026] Figure 2 It is an exploded structural schematic diagram of an outdoor unit of an air conditioner according to an embodiment of the present application;

[0027] Figure 3 is Figure 2 A schematic structural diagram of the heat exchanger and the chassis in the shown outdoor unit of the air conditioner at an angle;

[0028] Figure 4 is Figure 2 A schematic structural diagram of the heat exchanger and the chassis in the shown outdoor unit of the air conditioner at another angle;

[0029] Figure 5 is Figure 1 A schematic structural diagram of the heat exchanger in the shown outdoor unit of the air conditioner;

[0030] Figure 6 is Figure 5 A partial enlarged structural schematic diagram of the connection between the first pipe and the first elbow in ;

[0031] Figure 7 is Figure 5 Another partial enlarged structural schematic diagram of the connection between the first pipe and the first elbow in ;

[0032] Figure 8 is Figure 3 A three-dimensional structural schematic diagram of the chassis in ;

[0033] Figure 9 is Figure 8 A top view structural schematic diagram of the shown chassis;

[0034] Figure 10 is Figure 9 A sectional view along direction A-A;

[0035] Figure 11 is Figure 3Schematic diagram of the enlarged structure of the middle region B;

[0036] Figure 12 is Figure 10 Top view structure diagram of the middle heat exchange area;

[0037] Figure 13 is Figure 8 Schematic diagram of the enlarged structure of the middle region C;

[0038] Figure 14 is Figure 8 Schematic diagram of the enlarged structure of the middle region D.

[0039] The reference numerals in the drawings are represented as follows:

[0040] 1000, air conditioner;

[0041] 100, outdoor unit of the air conditioner; 200, indoor unit of the air conditioner; 201, indoor heat exchanger;

[0042] 1, chassis; A1, heat exchange area; AA1, first heat exchange area; AA2, second heat exchange area; A2, fan area; A3, mechanical area;

[0043] 11, column; 111, flanging; 112, stopper;

[0044] 12, partition board;

[0045] 13, support surface; 131, drainage groove; 132, drainage hole; 133, first water outlet hole; 134, first diversion groove; 135, second water outlet hole; 136, second diversion groove;

[0046] 15, recess; 16, support feet; 161, through hole;

[0047] 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 part; 212, reduced diameter part; 213, enlarged diameter part; 214, first copper sleeve; 215, second copper sleeve; 22, second tube; 220, second elbow; 23, header pipe; 24, diverter;

[0048] 3, fan; 4, compressor; 41, exhaust pipe; 42, suction pipe; 5, top cover; 6, enclosure; 61, air outlet; 7, gas-liquid separator; 8, filter;

[0049] 9, four-way valve; 91, first valve port; 92, second valve port; 93, third valve port; 94, fourth valve port. Detailed implementation manners

[0050] 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 drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be fully conveyed to those skilled in the art.

[0051] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or their combinations. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0052] Although the terms first, second, third, etc. may be used herein 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 may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0053] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over" and the like. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" another element or feature will then be oriented as "above" or "over" the other element or feature. Thus, the exemplary term "below" can include both upward and downward orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are accordingly interpreted.

[0054] Figure 1 It is a schematic electrical structure diagram of an air conditioner according to an embodiment of the present application.

[0055] Refer to Figure 1 , an embodiment of the present application further provides an air conditioner 1000, which includes an air conditioner indoor unit 200 and an air conditioner outdoor unit 100. 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, for refrigerating or heating, and transports refrigerant through a pipeline. The refrigerant exchanges heat with the indoor air and the outdoor air respectively. The air conditioner indoor unit 200 is used to deliver cold air or hot air into the room to achieve the effect of cooling or heating.

[0056] 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 communicated with the exhaust pipe 41 of the compressor 4, the third valve port 93 is communicated with the suction pipe 42 of the compressor 4, the second valve port 92 is communicated with the inlet of the heat exchanger 2, and the fourth valve port 94 is communicated with the outlet of the indoor heat exchanger. Among them, in the refrigeration cycle mode, the first valve port 91 can be conducted with the second valve port 92, and the third valve port 93 is conducted with the fourth valve port 94, and the refrigerant flows in the first direction in the circulation loop; in the defrosting cycle mode, the first valve port 91 can be conducted with the fourth valve port 94, and the second valve port 92 is conducted with the third valve port 93, and the refrigerant flows in the second direction in the circulation loop, and the second direction is opposite to the first direction.

[0057] Thus, the four-way valve 9 has two operating states: when the four-way valve 9 is de-energized, 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 through the four-way valve 9 and then successively to the heat exchanger 2 of the outdoor unit 100 of the air conditioner and the indoor heat exchanger 201 of the outdoor unit 100 of the air conditioner. 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, and the indoor heat exchanger 201 is used as an evaporator to exchange heat between the low-temperature refrigerant and the indoor air, thereby outputting cold air to the room. Then, the refrigerant circulates back to the compressor 4 through the suction pipe 42.

[0058] When the four-way valve 9 is energized, the air conditioner 1000 enters the defrosting cycle mode. After the refrigerant is discharged from the exhaust end of the compressor 4, it flows through the four-way valve 9 and then successively to the indoor heat exchanger 201 and the heat exchanger 2 of the outdoor unit 100 of the air conditioner. 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 room. The heat exchanger 2 of the outdoor unit 100 of the air conditioner is used as an evaporator. Then, the refrigerant circulates back to the compressor 4 through the suction pipe 42.

[0059] In the related art, when the outdoor unit of the air conditioner is in the heating condition in winter, in order to prevent ice from forming under the heat exchanger, a plurality of relatively long connecting pipes are usually arranged on the side of the heat exchanger close to the chassis as a subcooling circuit to melt the generated ice and frost in time. Other pipelines outside the subcooling circuit are used for conventional refrigeration / heating heat exchange. Due to the large weight of the heat exchanger itself, it is easy to crush the connecting pipes close to the chassis. The connecting pipes are generally made of copper, with low hardness, and the effective thickness of the wall is generally less than 0.3 mm. If foreign objects such as screws are pressed when placing the heat exchanger, it is very easy to cause the connecting pipes on the chassis side to crack, perforate and leak.

[0060] Therefore, the outdoor unit 100 of the air conditioner provided in the embodiment of the present application can reduce the possibility of leakage of the pipelines on the side of the heat exchanger 2 close to the chassis 1, and improve the reliability of the outdoor unit of the air conditioner.

[0061] Figure 2 It is a schematic exploded view of the outdoor unit of the air conditioner according to an embodiment of the present application. Figure 3 is Figure 2 a schematic structural view of the heat exchanger and the chassis in the shown outdoor unit of the air conditioner at an angle. Figure 4 is Figure 2 a schematic structural view of the heat exchanger and the chassis in the shown outdoor unit of the air conditioner at another angle. Figure 5 is Figure 2 a schematic structural view of the heat exchanger in the shown outdoor unit of the air conditioner.

[0062] Please refer to Figures 2 to 5, the outdoor air conditioner 100 provided by the embodiment of the present application includes a chassis 1 and a heat exchanger 2 disposed on the chassis 1.

[0063] 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 in supporting the heat exchanger 2. The heat exchanger 2 includes a first region M1 and a second region M2 arranged in sequence along its height direction. The first region M1 is arranged close to one side of the chassis 1. The heat exchanger 2 includes at least one first pipe 21 located in the first region M1 and at least one second pipe 22 located in the second region M2. The hardness of the first pipe 21 is greater than that of the second pipe 22.

[0064] In this embodiment, the outdoor air conditioner 100 further includes a fan 3 and a compressor 4. The heat exchanger 2 further includes a fin plate 2a and a side plate 2b arranged oppositely. The first pipe 21 and the second pipe 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 outdoor air conditioner 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 outdoor air conditioner 100. The outdoor air conditioner 100 further includes a top cover 5 and a vertically extending enclosure 6. The chassis 1 cooperates with the enclosure 6 and the top cover 5 to form an accommodation space, so that the heat exchanger 2, the fan 3, and the compressor 4 are all located in the accommodation space. And the enclosure 6 is provided with an air outlet 61. The fan 3 can be an axial flow fan 3, which is fixed to 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. Thus, when the fan 3 rotates, the outside air flow can pass through the side where the fin plate 2a is located after heat exchange from the side where the side plate 2b of the heat exchanger 2 is located, and then be blown out to the outdoor environment through the air outlet 61.

[0065] As Figure 5 shown, the first region M1 and the second region M2 of the heat exchanger 2 are respectively filled with different shaded patterns. The heat exchanger 2 includes at least one first pipe 21 located in the first region M1 and at least one second pipe 22 located in the second region M2. The structure of the first pipe 21 is similar to that of the second pipe 22. Optionally, the number of the first pipes 21 can be 1 to 6, and the number of the second pipes 22 is more, without limitation, depending on the power of the heat exchanger 2.

[0066] Under the winter heating condition, in order to prevent the chassis 1 below the heat exchanger 2 from icing, generally, a plurality of first pipes 21 are usually set as a subcooling circuit to timely melt the ice and frost generated on the chassis 1, while the second pipes 22 are generally used for conventional refrigeration / heating heat exchange. Due to the large weight of the heat exchanger 2 itself, the hardness of the first pipes 21 arranged in the first area M1 on the side of the heat exchanger 2 close to the chassis 1 is greater than the hardness of the second pipes 22 arranged in the second area M2 above it, so that the first pipes 21 are not easily crushed by the second pipes 22 above them. Even if the first pipes 21 are pressed against foreign objects such as screws, it is not easy to cause cracking, perforation and leakage.

[0067] According to the air conditioner outdoor unit 100 provided by the embodiment of the present application, by setting the hardness of the first pipes 21 on the side of the heat exchanger 2 close to the chassis 1 to be greater than the hardness of the second pipes 22 in the area above it, the possibility of leakage of the pipeline on the side of the heat exchanger 2 close to the chassis 1 can be reduced, and the reliability of the air conditioner outdoor unit 100 can be improved.

[0068] In some embodiments, the first pipes 21 are stainless steel pipes, and the second pipes 22 are copper pipes or aluminum pipes. The hardness of the stainless steel pipes is greater than that of the copper pipes or aluminum pipes, which can reduce the possibility of cracking, perforation and leakage of the first pipes 21.

[0069] In some embodiments, the heat exchanger 2 further includes a header pipe 23 and a diverter 24. A plurality of pipe groups N are arranged in the second area M2. Each pipe group N includes a plurality of second pipes 22 connected in sequence. Among them, in each pipe group N, one end of a second pipe 22 is connected to the header pipe 23, and one end of another second pipe 22 is connected to the diverter 24. The remaining adjacent two second pipes 22 are communicated through a second elbow 220. The second elbow 220 is a copper pipe or an aluminum pipe; the number of the first pipes 21 is at least two. One end of one of the first pipes 21 is connected to the diverter 24, and the remaining adjacent two first pipes 21 are communicated through a first elbow 210. The first elbow 210 is a stainless steel pipe.

[0070] As Figure 1 and Figure 5As shown in the figure, when the air conditioner 1000 is in the cooling mode, the heat exchanger 2 is used as a condenser, and the indoor heat exchanger 201 is used as an evaporator. The gas collector 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 respectively convey it to a plurality of second pipes 22 of a plurality of pipe groups N in the second area M2. Among them, in each pipe group N, one end of a second pipe 22 is connected to the gas collector pipe 23, one end of another second pipe 22 is connected to the shunt device 24, and the remaining adjacent two second pipes 22 are communicated through a second elbow pipe 220. Both the second pipe 22 and the second elbow pipe 220 are made of copper pipes or both are made of aluminum pipes. By the rotation of the fan 3, the outside air flow exchanges heat with the high-temperature and high-pressure gaseous refrigerant in the plurality of second pipes 22, so that at least part of the high-temperature and high-pressure gaseous refrigerant condenses into a low-temperature liquid refrigerant. The low-temperature liquid refrigerant converges to the shunt device 24 and flows into at least two first pipes 21 in the first area M1. The adjacent two first pipes 21 are communicated through a first elbow pipe 210. Both the first pipe 21 and the first elbow pipe 210 are made of stainless steel pipes. By the low-temperature liquid refrigerant exchanging heat with the indoor heat exchanger 201, cold air is output to the room, and finally the refrigerant returns to the compressor 4 through the suction pipe 42.

[0071] In addition, at least two first pipes 21 and the first elbow pipe 210 in the first area M1 on the side of the heat exchanger 2 close to the chassis 1 are used to timely melt the frost generated in the chassis 1. At the same time, both the first pipe 21 and the first elbow pipe 210 are made of stainless steel pipes, and have a high hardness. Even if the first pipe 21 or the first elbow pipe 210 presses against foreign objects such as screws, it is not easy to cause cracking, perforation and leakage.

[0072] When the air conditioner 1000 is in the heating mode, 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 to release warm air to the room, so that at least part of the high-temperature and high-pressure gaseous refrigerant condenses into a low-temperature liquid refrigerant. The low-temperature liquid refrigerant enters the shunt device 24 through at least two first pipes 21 in the first area M1, enters a plurality of second pipes 22 of a plurality of pipe groups N in the second area M2 through the shunt device 24, and then converges to the gas collector pipe 23. Finally, the refrigerant returns to the compressor 4 through the suction pipe 42. Figure 6 For Figure 5 a partial enlarged structural schematic diagram of the connection part between the first pipe and the first elbow pipe.

[0073] In some embodiments, the first pipe 21 includes a main body portion 211 and a flared portion 213 located at at least one end of the main body portion 211. The outer diameter of the flared portion 213 is larger than the outer diameter of the main body portion 211, and the inner surface of the flared portion 213 is copper-plated; both ends of the first elbow pipe 210 are respectively provided with a reduced-diameter portion 212, the outer surface of the reduced-diameter portion 212 is copper-plated, and the flared portion 213 is sleeved on the outer periphery of the reduced-diameter portion 212 and welded into one body.

[0074] As Figure 5 and Figure 6 shown, the first pipe 21 and the first elbow pipe 210 are connected and communicated by welding. Since the materials of the first pipe 21 and the first elbow pipe 210 are both stainless steel and not easy to weld, in order to improve the welding performance at the connection of the first pipe 21 and the first elbow pipe 210, the first pipe 21 includes a main body portion 211 and a flared portion 213 located at at least one end of the main body portion 211. Reduced diameter portions 212 are respectively provided at both ends of the first elbow pipe 210. The inner surface of the flared portion 213 is copper-plated, and the outer surface of the reduced diameter portion 212 is copper-plated. The flared portion 213 is sleeved on the outer periphery of the reduced diameter portion 212, and the connection surfaces of the two are respectively copper-plated, which is convenient for welding the two into one body and also improves the connection sealing performance of the first pipe 21 and the first elbow pipe 210.

[0075] It can be understood that the second pipe 22 and the second elbow pipe 210 are welded and connected in a similar manner. The difference is that the second pipe 22 and the second elbow pipe 210 are both copper pipes or aluminum pipes, and the welding performance is better. The copper-plating process on the inner surface of the flared portion and the outer surface of the reduced diameter portion can be omitted.

[0076] Figure 7 For Figure 5 Another partial enlarged structural schematic diagram of the connection between the first pipe and the first elbow pipe in

[0077] In some embodiments, at least one end of the main body portion 211 of the first pipe 21 is provided with a flared portion 213. The outer diameter of the flared portion 213 is greater than the outer diameter of the main body portion 211. The inner surface of the flared portion 213 is copper-plated and welded with a first copper sleeve 214. Reduced diameter portions 212 are respectively provided at both ends of the first elbow pipe 210. The outer surface of the reduced diameter portion 212 is copper-plated and welded with a second copper sleeve 215. The first copper sleeve 214 is sleeved on the outer periphery of the second copper sleeve 215 and welded into one body.

[0078] As Figure 5 and Figure 7 shown, the inner surface of the flared portion 213 of the first pipe 21 is copper-plated and welded with the first copper sleeve 214. The outer surface of the reduced diameter portion 212 of the first elbow pipe 210 is copper-plated and welded with the second copper sleeve 215. The first copper sleeve 214 is sleeved on the outer periphery of the second copper sleeve 215 and welded into one body. Since the welding performance between copper pipes is better and the compressive performance at the weld is stronger, it is suitable for welding at places with greater pressure, and can further improve the welding performance and sealing performance at the connection of the first pipe 21 and the first elbow pipe 210.

[0079] Figure 8 For Figure 3 the three-dimensional structural schematic diagram of the chassis in Figure 9 For Figure 8 the top view structural schematic diagram of the chassis shown inFigure 10 is Figure 9 A sectional view along the direction A-A.

[0080] In some embodiments, a partition plate 12 is provided on the chassis 1. The chassis 1 includes a blower 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 blower area A2. The heat exchange area A1 is sunken relative to the plane where the blower 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 one side of the first area M facing the chassis 1 is attached to the support surface 13.

[0081] As Figures 8 to 10 shown, the chassis 1 includes a heat exchange area A1, a blower area A2, and a mechanical area A3. The heat exchange area A1, the blower area A2, and the mechanical area A3 are filled with different shaded patterns respectively. Among them, the heat exchange area A1 is located at the outer edge of the blower area A2. A partition plate 12 is provided between the blower area A2 and the mechanical area A3 (as Figure 2 shown). 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 blower 3 on the chassis 1 is located in the blower 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 blower area A2 is located to form a support surface 13, and one side of the first area M facing the chassis 1 is attached to the support surface 13. Among them, the plane where the blower area A2 is located refers to the plane where the lowest area of the blower area A2 is located. Since the support surface 13 of the heat exchange area A1 is lower than the plane where the blower area A2 is located, it can prevent the condensed water generated by the heat exchanger 2 during operation from flowing into the blower area A2 under the action of gravity and contacting the blower 3, reducing the possibility that the circuit part of the air conditioner outdoor unit 100 is short-circuited due to the condensed water thrown out by the blower 3.

[0082] Figure 11 is Figure 3 an enlarged structural schematic diagram of area B in

[0083] In some embodiments, at least one end of the main body portion 211 of the first pipe 21 is provided with a flared portion 213, and the support surface 13 is recessed to form a recess 15 corresponding to the flared portion 213 of the adjacent first pipe 21.

[0084] As Figure 6 shown, the flared portion 213 of the first pipe 21 is used to connect with the first elbow 210, and the outer diameter of the flared portion 213 is larger than the outer diameter of the main body portion 211. As Figure 10 and Figure 11As shown, a recess 15 is formed by concavely arranging the supporting surface 13 corresponding to the flared portion 213 of the adjacent first tube 21. The recess 15 can prevent structural interference between the flared portion 213 and the supporting surface 13 and improve the wear resistance of the flared portion 213. The number of recesses 15 can be one or more, depending on the number of first tubes 21 adjacent to the supporting surface 13.

[0085] In some embodiments, a drain groove 131 is formed by concavely arranging one side of the supporting surface 13 away from the fan area A2, and the lowest point of the recess 15 is higher than the bottom wall of the drain groove 131.

[0086] As Figure 10 and Figure 11 shown, a plurality of drain grooves 131 are formed by concavely arranging one side of the supporting surface 13 away from the fan area A2 at intervals. The shape of the drain groove 131 can be arranged in a strip shape along the extending direction of the heat exchanger 2, or can be a regular shape such as a circle or a rectangle, so as to be regularly arranged on the chassis 1. Condensate generated during the operation of the heat exchanger 2 or ice water melted at the chassis 1 can flow from the supporting surface 13 to the drain groove 131, preventing the condensate from accumulating and freezing at the supporting 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 drain groove 131, which can prevent water from accumulating and freezing at the recess 15 and improve the drainage effect of the condensate.

[0087] Figure 12 For Figure 10 is a schematic top view structure diagram of the heat exchange area in

[0088] In some embodiments, the heat exchanger 2 includes a first heat exchange portion 2c and a second heat exchange portion 2d arranged at an angle, and the first heat exchange portion 2c and the second heat exchange portion 2d are connected by a rounded corner transition; the heat exchange area A1 includes a first heat exchange area AA1 and a second heat exchange area AA2 arranged at an angle. The second heat exchange area AA2 is adjacent to the mechanical area A3. The first heat exchange portion 2c is located in the first heat exchange area AA1, and the second heat exchange portion 2d is located in the second heat exchange area AA2. The number of drain grooves 131 is multiple, and the multiple drain grooves 131 are distributed at intervals in the first heat exchange area AA1 and the second heat exchange area AA2.

[0089] As Figure 3 and Figure 4 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. As Figure 12As shown, the first heat exchange part 2c is located in the first heat exchange area AA1, and the second heat exchange part 2d is located in the second heat exchange area AA2. The three drain grooves 131 are spaced apart in the first heat exchange area AA1, and the two drain grooves 131 are spaced apart in the second heat exchange area AA2, which can respectively drain 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 the drain grooves 131 can also be other numbers according to the space layout of the chassis 1.

[0090] In some embodiments, a drain hole 132 is formed in the bottom wall of the drain groove 131, and at least part of the drain hole 132 is covered by the orthographic projection of the heat exchanger 2 on the chassis 1, so that the drain hole 132 can communicate with the air inlet side of the heat exchanger 2.

[0091] As Figure 10 and Figure 12 shown, the number of the drain grooves 131 is five, and a drain hole 132 is provided in the bottom wall of each drain groove 131, so as to drain the condensed water or melted ice water flowing into the drain groove 131 to the outside through the drain hole 132, preventing the water in the drain groove 131 from overflowing and flowing back to the support surface 13. The orthographic projection of the heat exchanger 2 on the chassis 1 is as Figure 12 shown by the dashed frame of the shaded part in. Since the drain hole 132 is communicated with 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 drain hole 132, avoiding the condensed water from spreading along the air flow direction and being unable to be drained in time, greatly reducing the drainage difficulty of the condensed water at the drain hole 116, improving the drainage efficiency of the drain hole 132, and at the same time preventing external accumulated water from being sucked back to the support surface 13 through the drain hole 132, making it easy for external personnel to observe the blockage condition of the drain hole 132, ensuring the stable drainage function of the drain hole 132, so as to improve the technical problem of poor drainage of the drain hole 132. When one of the drain holes 132 is blocked, the condensed water can also be drained to the outside through the drain holes 132 of other drain grooves 131, thereby preventing local drainage failure and ensuring the drainage efficiency.

[0092] Figure 13 is Figure 8 the enlarged structural schematic diagram of area C in, Figure 14 is Figure 8 the enlarged structural schematic diagram of area D in.

[0093] In some embodiments, a first water outlet hole 133 and a first diversion groove 134 are further formed in the bottom wall of the support surface 13. 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 diversion groove 134 communicates with the first diversion groove 134 of the fan area A2 and the first water outlet hole 133, and the height of the bottom wall of the first diversion groove 134 gradually decreases along the extending direction towards the first water outlet hole 133.

[0094] AsFigure 8 and Figure 14 As shown in Figure 14 , the first water outlet hole 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 guide the condensed water in the fan area A2 to the first water outlet hole 133 through the first diversion groove 134 for discharge. Since the height of the bottom wall of the first diversion groove 134 gradually decreases along the extending direction towards the first water outlet hole 133, the flow rate of the condensed water guided to the first water outlet hole 133 can be further increased.

[0095] Furthermore, as Figure 12 shown, the orthographic projection of the heat exchanger 2 on the chassis 1 is as Figure 12 shown by the dotted line frame of the shaded part in Figure 12 . At least part of the first water outlet hole 133 is exposed on the air inlet side of the heat exchanger 2 and is in communication with 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 hole 133, greatly reducing the drainage difficulty of the condensed water at the first water outlet hole 133, ensuring the drainage efficiency, and at the same time preventing external accumulated water from being sucked back into the chassis 1 through the first water outlet hole 133, and making it easy for external personnel to observe the blockage condition of the first water outlet hole 133.

[0096] In some embodiments, a column 11 is further provided at the junction of the first heat exchange part 2c and the second heat exchange part 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 hole 133.

[0097] As Figure 3 and Figure 12 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 snap connection or screw connection, etc., to improve the structural strength of the heat exchanger 2. And the column 11 can also be connected to the top cover 5 of the air conditioner outdoor unit 100, so as to provide a supporting effect and reduce the stress 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 hole 133, so as to prevent residues such as leaves and dirt from blocking the first water outlet hole 133 and ensure the normal drainage function of the first water outlet hole 133.

[0098] In some embodiments, a second water outlet hole 135 is further opened on one side of the support surface 13 close to the mechanical area A3, and a second diversion groove 136 is further opened on the chassis 1. The second diversion groove 136 extends from the mechanical area A3 to the heat exchange area A1 and is in communication with the second water outlet hole 135. The height of the bottom wall of the second diversion groove 136 gradually decreases along the extending direction towards the second water outlet hole 135; the concave part 15 is located between the second water outlet hole 135 and the mechanical area A3, and the opposite ends of the concave part 15 are in communication with the second diversion groove 136.

[0099] As Figure 9 and Figure 13As shown, the second diversion groove 136 extends from the mechanical area A3 to the heat exchange area A1 and communicates with the second water outlet hole 135, enabling accumulated water such as condensed water in the mechanical area A3 to be discharged along the second diversion groove 136 from the second water outlet hole 135. As Figure 9 shown by the dotted arrow in, the direction of water flow is as indicated, so that there is no need to open through holes in the mechanical area A3 for drainage, preventing foreign objects such as external insects from easily entering the mechanical area A3 and damaging equipment such as the compressor 4. The height of the bottom wall of the second diversion groove 136 gradually decreases along the extension direction towards the second water outlet hole 135, which can further increase the flow rate of the accumulated water in the second diversion groove 136 to prevent the accumulated water such as condensed water from staying in the mechanical area A3 of the chassis 1 for too long. Optionally, the second diversion groove 136 extends in a circumferentially zigzag manner within the mechanical area A3 to facilitate the collection of accumulated water such as condensed water at various positions in the mechanical area A3.

[0100] Furthermore, as Figure 13 shown, 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 communicate with the second diversion groove 136. By forming the recess 15 at the bottom wall of the support surface 13 to communicate with the second diversion groove 136, the flow rate of the second diversion groove 136 flowing towards the second water outlet hole 135 can be increased, improving the drainage efficiency of the accumulated water such as condensed water in the mechanical area A3.

[0101] In some embodiments, the chassis 1 further includes a flanging 111 connected to the outer peripheral edge of the chassis 1, and at least a part of the flanging 111 abuts against the air inlet side of the first area M1 of the heat exchanger 2; and / or, the chassis 1 further includes a stopper 112 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.

[0102] As Figure 4 shown, a side plate 2b is provided on the air inlet side of the first area M1 of the heat exchanger 2, and a fin plate 2a is provided on the air outlet side of the first area M1. The flanging 111 can be an integral structure with the chassis 1 to ensure the stability of the flanging 111 abutting against the side plate 2b, thereby improving the stability of the heat exchanger 2 on the chassis 1. In addition, the flanging 111 can also be connected and limited to other components supported on the chassis 1. Additionally, mounting holes can be opened on the column 11, and corresponding connection holes can be opened on the flanging 111, and the two are fixed by passing through the mounting holes and the connection holes in sequence with connecting members such as screws. Optionally, the surface of the flanging 111 facing the column 11 is convexly provided with ribs that abut against the surface of the column 11 facing away from the air inlet side. Thus, by providing the ribs to abut against the column 11, the stability of the column 11 after installation can be further improved.

[0103] As Figure 3 and Figure 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.

[0104] 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 .

[0105] like Figure 8 and Figure 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.

[0106] 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.

[0107] 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 shall be subject to 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 comprises a first area and a second area arranged in sequence along 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 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; The first tube is a stainless steel tube, and the second tube is a copper tube or an aluminum tube; The chassis is provided with a partition plate, 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 in contact with the support surface on one side of the chassis; The first tube includes a main body and a flared portion located at at least one end of the main body, the support surface is recessed to form a recess corresponding to the flared portion of the adjacent first tube, and a drainage groove is recessed on the 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.

2. The air conditioner outdoor unit according to claim 1, 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.

3. The air conditioner outdoor unit according to claim 2, characterized in that: The outer diameter of the flared portion is greater than the outer diameter of the main body portion, 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.

4. The air conditioner outdoor unit according to claim 2, characterized in that: The outer diameter of the flared portion is greater than the outer diameter of the main body portion, the inner surface of the flared portion is copper-plated, and a first copper sleeve is welded thereto; 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.

5. The air conditioner outdoor unit according to claim 1, 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.

6. The air conditioner outdoor unit according to claim 5, 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.

7. The air conditioner outdoor unit according to claim 5, 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.

8. The air conditioner outdoor unit according to claim 7, 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.

9. The air conditioner outdoor unit according to claim 1, 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.

10. The air conditioner outdoor unit according to claim 1, 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.

11. The air conditioner outdoor unit according to claim 6, 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.

12. 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 11, wherein the air-conditioning outdoor unit is connected to the air-conditioning indoor unit through a pipeline.

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