Intelligent production line for air conditioner outdoor unit

Abstract

This invention discloses an intelligent production line for air conditioner outdoor units, comprising an assembly line and a material supply line. The assembly line includes multiple assembly stations, each equipped with a first robot that automatically completes the tasks at the assembly station. The assembly stations are arranged sequentially along the conveying direction of a first conveyor line used for transporting materials. The material supply line includes a material bin, where materials required for any assembly station are stored in material frames, and the bin contains multiple material placement areas. A second conveyor line transports the material frames. A second robot transfers the material frames between the material bin and the second conveyor line. This production line enables automatic material supply and automated assembly of each process, improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology, and in particular to an intelligent production line for air conditioner outdoor units. Background Technology

[0002] The assembly of air conditioner outdoor units involves multiple processes, such as compressor installation, gas-liquid separator installation, and outdoor heat exchanger installation. Currently, some outdoor unit production lines rely on robots to assist manual labor for semi-automatic assembly. However, when materials are unavailable for each process, manual loading is required, leading to low production efficiency. Furthermore, the multiple processes are located within the same floor area, occupying a large space.

[0003] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0004] In response to the problems mentioned in the background art, this invention proposes an intelligent production line for air conditioner outdoor units, which realizes automatic material replenishment and automated assembly of each process, thereby improving production efficiency.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] In some embodiments of this application, an intelligent production line for air conditioner outdoor units is provided, including an assembly line and a material supply line. The assembly line includes: multiple assembly stations, each equipped with a first robot that automatically completes the work tasks of the assembly station; the multiple assembly stations are arranged sequentially along the conveying direction of a first conveyor line, which is used to convey materials; the material supply line includes: a material bin, in which materials required for any assembly station are placed using material frames as storage units, and the material bin has multiple material placement areas; a second conveyor line is used to convey material frames; a second robot is used to transfer material frames between the material bin and the second conveyor line; the material frames are transferred between the first conveyor line and the second conveyor line.

[0007] Beneficial effects: The intelligent production line for outdoor units automates the assembly process through the assembly line and automatically replenishes the materials needed for each assembly process through the material replenishment line. The automated operation of the assembly line and material replenishment line involves the coordinated use of different types of robots and vision devices. This achieves automated material replenishment and automated assembly of each process for the outdoor unit, improving production efficiency.

[0008] The assembly line and material supply line are relatively independent, yet they work together to achieve intelligent production of the entire line without human intervention, resulting in a high degree of automation. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of a layout for an intelligent production line for air conditioner outdoor units according to some embodiments;

[0011] Figure 2 This is a schematic diagram of yet another layout of an intelligent production line for air conditioner outdoor units, according to some embodiments;

[0012] Figure 3 This is a schematic diagram of yet another layout of an intelligent production line for air conditioner outdoor units, according to some embodiments;

[0013] Figure 4 This is a schematic diagram of an assembly line layout according to some embodiments;

[0014] Figure 5 This is a schematic diagram of a layout for a material supply line according to some embodiments;

[0015] Figure 6 This is a schematic diagram of yet another layout of a material supply line according to some embodiments;

[0016] Figure 7 This is a structural diagram of an assembly station and a first robot according to some embodiments;

[0017] Figure 8 This is a structural diagram of a gripping robot according to some embodiments;

[0018] Figure 9 A structural diagram of a screw-installing robot according to some embodiments;

[0019] Figure 10 A cross-sectional view of a screw mounting fixture according to some embodiments;

[0020] Figure 11 A structural diagram of a heat exchanger installation robot according to some embodiments;

[0021] Figure 12 This is a partial structural diagram of a heat exchanger clamp according to some embodiments;

[0022] Figure 13 This is a structural diagram of a material frame and an outdoor heat exchanger according to some embodiments;

[0023] Figure 14This is a structural diagram of a dual-headed robot according to some embodiments;

[0024] Figure 15 This is a structural diagram of a welding robot according to some embodiments;

[0025] Figure 16 This is a structural diagram of a gas detection robot according to some embodiments;

[0026] Figure 17 This is a schematic diagram of the layout of an indoor unit intelligent production line according to some embodiments;

[0027] Figure 18 This is a structural diagram of a heat exchanger spraying station according to some embodiments;

[0028] Figure 19 This is a structural diagram of an indoor heat exchanger according to some embodiments;

[0029] Figure 20 This is a structural diagram of a fin according to some embodiments;

[0030] Figure 21 This is a structural diagram of a capsule portion according to some embodiments;

[0031] Figure 22 This is a schematic diagram of a heat exchanger production line according to some embodiments;

[0032] Figure 23 This is a partial structural diagram of a finned access device according to some embodiments;

[0033] Figure 24 This is a positional diagram of the lifting support plate in the material storage state according to some embodiments;

[0034] Figure 25 This is a positional diagram of the lifting support plate in the material handling state according to some embodiments;

[0035] Figure 26 Here is a structural diagram of the lifting support plate according to some embodiments;

[0036] Figure 27 Here is a structural diagram of the offline robot according to some embodiments;

[0037] Figure 28 This is a structural diagram of the offline fixture according to some embodiments;

[0038] Figure 29 This is a structural diagram of the second lower clamping member according to some embodiments;

[0039] Figure 30 for Figure 29 Enlarged view of point A in the image;

[0040] Figure 31 This is a partial structural diagram of an endplate mounting device according to some embodiments;

[0041] Figure 32 This is a diagram showing the conveying state of a finned stack on a short-plate mounting device according to some embodiments;

[0042] Figure 33 This is a schematic diagram showing the position of the lifting member on the end plate mounting device according to some embodiments;

[0043] Figure 34 A structural diagram of an endplate mounting robot according to some embodiments;

[0044] Figure 35 for Figure 34 A diagram showing the connection at point B in the diagram;

[0045] Figure 36 This is a state diagram of the end plate clamp holding the end plate component according to some embodiments;

[0046] Figure 37 Here are structural diagrams of a heat exchanger according to some embodiments;

[0047] Figure 38 Here are structural diagrams of an intubation robot according to some embodiments;

[0048] Figure 39 This is a structural diagram of an insertion clamp according to some embodiments;

[0049] Figure 40 This is a structural diagram of a transfer fixture according to some embodiments;

[0050] Figure 41 Here is a structural diagram of a nitrogen filling device according to some embodiments;

[0051] Figure 42 Here are structural diagrams of an intubation robot according to some embodiments;

[0052] Figure 43 This is a structural diagram of a pipe clamp according to some embodiments;

[0053] Figure 44 This is one of the connection diagrams of nitrogen-filled fittings and piping components according to some embodiments;

[0054] Figure 45 for Figure 44 CC section view in the middle;

[0055] Figure 46 This is the second diagram showing the connection between the nitrogen-filled fitting and the piping according to some embodiments;

[0056] Figure 47 This is a diagram of the elastic element connection according to some embodiments. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] In some embodiments of this application, an air conditioner is provided that performs a cooling or heating cycle using a compressor, a condenser, an expansion valve, and an evaporator. A low-temperature, low-pressure refrigerant enters the compressor, which compresses it into a high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0059] An air conditioner's outdoor unit includes a compressor and an outdoor heat exchanger, while the indoor unit includes an indoor heat exchanger. Both the indoor and outdoor heat exchangers function as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner acts as a heater in heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner acts as a cooler in cooling mode.

[0060] An air conditioner outdoor unit consists of a casing, compressor, gas-liquid separator, outdoor heat exchanger, piping assembly, and outdoor fan. A partition is installed inside the casing, dividing the interior into two chambers arranged on the left and right. The compressor and gas-liquid separator are located in one chamber, while the outdoor heat exchanger and outdoor fan are located in the other chamber.

[0061] In some embodiments of this application, an intelligent production line for air conditioner outdoor units is provided, including an assembly line 100. Figure 4 This is a schematic diagram of the layout of assembly line 100. Assembly line 100 is configured to automatically assemble the components that make up the outdoor unit.

[0062] Assembly line 100 includes multiple assembly stations 170, and each assembly station 170 is equipped with a first robot 110, which is configured to automatically complete the work tasks of the assembly station 170. The type and number of first robots 110 on any assembly station 170 are selected according to the work tasks of that assembly station 170.

[0063] Assembly line 100 also includes a first conveyor line 120, see reference. Figure 1 Multiple assembly stations 170 are arranged sequentially along the conveying direction of the first conveyor line 120, which is configured to convey materials. The materials are those required by each assembly station 170.

[0064] For example, assembly line 100 includes compressor installation station I-01, gas-liquid separator installation station I-02, first screw fixing station I-03, outdoor heat exchanger installation station I-04, middle partition plate installation station I-05, left side plate installation station I-06, piping assembly installation station I-07, welding auxiliary mechanical manual station I-08, welding station I-09, outdoor fan installation station I-10, airtightness testing station I-11, vacuum filling station I-12, commodity inspection station I-13, joint disassembly station I-14, automatic halogen inspection station I-15, rear cover plate assembly installation station I-16, rear cover guard net installation station I-17, bottom support installation station I-18, second screw fixing station I-19, and automatic packaging station I-20. These installation stations are arranged sequentially along the material conveying direction of the first conveyor line 120.

[0065] Compressor installation station I-01 is configured for pre-positioning the compressor. Gas-liquid separator installation station I-02 is configured for pre-positioning the gas-liquid separator. First screw fixing station I-03 is configured for tightening the screws on the compressor and gas-liquid separator. Outdoor heat exchanger installation station I-04 is configured for pre-positioning the outdoor heat exchanger. Middle partition plate installation station I-05 is configured for fixing the middle partition plate. Left side plate installation station I-06 is configured for fixing the left side plate. Piping assembly installation station I-07 is configured for installing the piping assembly. Welding auxiliary mechanical manual station I-08 is configured to fill the piping with helium in preparation for subsequent piping welding. Welding station I-09 is configured for welding the piping joints. Outdoor fan installation station I-10 is configured for fixing the outdoor fan. The airtightness testing station I-11 is configured to test the helium concentration at the welded piping joints to check for leaks. The evacuation and refrigerant charging station I-12 is configured to evacuate and charge the refrigerant pipes. The connector disassembly station I-14 is configured to disassemble the end connectors of the refrigerant pipes. The automatic halogen inspection station I-15 is configured to perform halogen checks on the inside of the refrigerant pipes. The rear cover assembly installation station I-16 is configured to securely install the rear cover. The rear cover guard installation station I-17 is configured to securely install the rear cover guard. The base support installation station I-18 is configured to pre-position the base support. The second screw fixing station I-19 is configured to fix the base support with screws. The automatic packaging station I-20 is configured to perform external packaging of the machine body.

[0066] For example, the first robot 110 at compressor installation station I-01 and gas-liquid separator installation station I-02 is a gripping robot 111. Figure 8This is a structural diagram of a gripping robot 111. The outer shell of the compressor and gas-liquid separator is cylindrical, and the gripping robot 111 uses its grippers to grasp the cylindrical outer shell.

[0067] For example, the first robot 110 at the first screw fixing station I-03, the connector disassembly station I-14, and the second screw fixing station I-19 is a screw installation robot 112. Figure 9 A structural diagram of a screw-installing robot 112. Figure 10 A cross-sectional view of a screw mounting fixture 1121.

[0068] The screw mounting fixture 1121 includes a cylinder 1122, a connecting rod 1123, and multiple grippers 1124. One end of the connecting rod 1123 is connected to the push rod of the cylinder 1122, and the other end is connected to the grippers 1124. The ends of the multiple grippers 1124 are brought close together to clamp the screw. A motor is installed on the robotic arm, which drives the screw mounting fixture 1121 to rotate, thereby enabling screw tightening or loosening.

[0069] For example, the first robot 110 at outdoor heat exchanger installation station I-04 is heat exchanger installation robot 113. Figure 11 A structural diagram of a robot 113 installed on a heat exchanger. Figure 12 This is a structural diagram of heat exchanger clamp 1131.

[0070] The heat exchanger clamp 1131 includes two opposing fixed plates 1132. A hydraulic cylinder 1134 is mounted on one of the fixed plates 1132. The push rod of the hydraulic cylinder 1134 is connected to a push plate 1133, which is located between the two fixed plates 1132. A heat exchanger clamping space is formed between the push plate 1133 and one of the fixed plates 1132. The push plate 1133 moves closer to the fixed plate 1132 to clamp the heat exchanger.

[0071] Reference Figure 13 The outdoor heat exchanger 10 is placed vertically within the material frame 20. The heat exchanger clamp 1131 is configured to clamp the outdoor heat exchanger 10 and the material frame 20. The outdoor heat exchanger 10 is a U-shaped heat exchanger, comprising a heat exchanger section 11, a heat exchanger section 12, and a heat exchanger section 13 connected in sequence. The heat exchanger section 11 and the heat exchanger section 13 are arranged opposite to each other and parallel to each other. The heat exchanger section 12 is arc-shaped. The length of the heat exchanger section 11 is greater than the length of the heat exchanger section 13.

[0072] The outdoor heat exchanger 10 is placed vertically in the material frame 20. The material frame 20 has a first limiting part 21 and a second limiting part 22 arranged opposite to each other. The first limiting part 21 is configured to limit the end of the heat exchanger section 11, and the second limiting part 22 is configured to limit the heat exchanger section 12. The heat exchanger clamp 1131 is configured to clamp the heat exchanger section 11.

[0073] Specifically, the first limiting part 21 is a slot, into which the end of the first section 11 of the heat exchanger is inserted to achieve limiting. The second limiting part 22 is a contact structure with an arc-shaped concave surface, which fits and abuts against the second section 12 of the heat exchanger to achieve limiting. The third section 13 of the heat exchanger abuts against the side wall of the material frame 20, further improving the stability of the outdoor heat exchanger 10 within the material frame 20.

[0074] The heat exchanger clamp 1131 grips section 11 of the heat exchanger and moves it upward, thus removing the outdoor heat exchanger 10 from the material frame 20. The heat exchanger clamp 1131 grips the side wall of the material frame 20, thus enabling the gripping and transfer of the material frame 20.

[0075] Multiple spaces can be arranged side by side within the material box 20 to accommodate multiple outdoor heat exchangers 10 simultaneously.

[0076] For example, the first robot 110 at the partition plate installation station I-05, the left side plate installation station I-06, the piping assembly installation station I-07, the outdoor fan installation station I-10, the rear cover plate assembly installation station I-16, and the rear cover netting installation station I-17 is a multi-head robot 114, such as a dual-head robot. Figure 14 This is a structural diagram of a dual-head robot. The multi-head robot 114 can simultaneously grip multiple materials, improving assembly efficiency.

[0077] The multi-head robot 114 has a first camera 1141 mounted on its robotic arm. An extension mount 1142 is mounted on the robotic arm, and the first camera 1141 is rotatably mounted on the extension mount 1142, thereby increasing the range of motion of the first camera 1141 and increasing the image acquisition range.

[0078] For example, the first robot 110 on welding station I-09 is welding robot 115. Figure 15 This is a structural diagram of a welding robot 115. A welding head 1152 is mounted on the robot's robotic arm. A second camera 1151 is also mounted on the robotic arm. The second camera 1151 identifies the welding points of the assembly. The robot drives the welding head 1152 to weld the points. After welding, the second camera 1151 takes a picture and uploads it to the control terminal. After comparing it with the welding model in the database, the welding information is fed back to the welding robot 115, and the robotic arm drives the welding head 1152 to adjust the welding points.

[0079] For example, the first robot 110 on the air tightness testing station I-11 and the automatic halogen testing station I-15 is a gas detection robot 116. Figure 16 This is a structural diagram of a gas detection robot 116. A detection probe 1162 is mounted on the robot's robotic arm. A third camera 1161 is also mounted on the robotic arm.

[0080] In some embodiments of this application, the intelligent production line for air conditioner outdoor units also includes a material supply line 200. Figure 5 This is a structural diagram of material supply line 200. Figure 6 This is another structural diagram for material supply line 200.

[0081] Reference Figure 1 The material supply line 200 includes a material bin 210. The material bin 210 is configured to store the materials required by the assembly line 100. The materials required by any assembly station 170 are placed in the material bin 210 in the form of material frames 20. The material bin 210 is provided with multiple material placement areas 280.

[0082] The material supply line 200 also includes a second conveyor line 230. The second conveyor line 230 is configured to convey the material frame 20. The material supply line 200 also includes a second robot 220. The second robot 220 is configured to transfer the material frame 20 between the material bin 210 and the second conveyor line 230. A ground rail 260 is provided, and the second robot 220 moves along the ground rail 260. The material frame 20 is configured to transfer between the first conveyor line 120 and the second conveyor line 230.

[0083] In other words, the materials required for each assembly station 170 are stored and transferred using material boxes 20 as storage units. Multiple material placement areas 280 partition and store multiple material boxes 20. The material boxes 20 required for different assembly stations 170 are placed in their corresponding material placement areas 280.

[0084] When a certain assembly station 170 needs to be replenished, the second robot 220 takes the required material box 20 out of the material bin 210 and places it on the second conveyor line 230. The material box 20 is conveyed by the second conveyor line 230 to the first conveyor line 120, and then by the first conveyor line 120 to the assembly station 170 that needs to be replenished. The first robot 110 on the assembly station 170 takes out the arrived material box 20 for subsequent assembly.

[0085] When an empty material box 20 appears at assembly station 170, the first robot 110 places the empty material box 20 onto the first conveyor line 120, where it is transferred out. For example, the empty material box 20 is conveyed from the first conveyor line 120 to the second conveyor line 230, and then transferred by the second robot 220 to the material bin 210, where it is then manually replenished.

[0086] The outdoor unit intelligent production line uses assembly line 100 to automate each assembly process, and material supply line 200 to automate the replenishment of materials required for each assembly process. The automated operation of assembly line 100 and material supply line 200 involves the coordinated use of different types of robots and vision devices. This achieves automated material replenishment and automated assembly of each process for the outdoor unit, improving production efficiency.

[0087] Assembly line 100 and material supply line 200 are relatively independent, yet they work together to achieve intelligent production of the entire line without human intervention, resulting in a high degree of automation.

[0088] In some embodiments of this application, a first identification code is provided on the material frame 20, and a second identification code is provided on the material placement area 280. The first identification code, the second identification code, and the assembly station 170 have a one-to-one correspondence.

[0089] A first vision inspection device 140 is installed on the assembly station 170, and the first vision inspection device 140 is configured to detect the first identification code.

[0090] The second robot 220 is equipped with a second vision detection device, which is configured to detect a second identification code.

[0091] For example, when replenishing materials at assembly station 170, the second vision detection device identifies the second identification code to determine the location of the material placement area 280. Then, the second robot 220 removes the corresponding material box 20. The material box 20 is conveyed to the assembly station 170 that needs replenishment via the second conveyor line 230 and the first conveyor line 120. The first vision detection device 140 identifies the first identification code to determine whether the material box 20 has arrived. After the material box 20 arrives, the first robot 110 removes the material box 20 and places it on the material box 20 placement table configured on assembly station 170. Since the first identification code, the second identification code, and assembly station 170 have a one-to-one correspondence, accurate replenishment of the corresponding assembly station 170 can be achieved through the identification code.

[0092] The first visual inspection device 140 and the second visual inspection device are common visual devices in the art, and will not be described in detail in this embodiment.

[0093] The first and second identification codes can be in the form of barcodes or other conventional technologies in this field, and will not be elaborated upon in this embodiment.

[0094] In some embodiments of this application, the first visual inspection device 140 can be positioned in various ways. For example, the first visual inspection device 140 can be integrated onto the robotic arm of the first robot 110, or it can be positioned beside the first conveyor line 120 at the assembly station 170. For example, refer to... Figure 7 A first robot 110 is provided on one side of the first conveyor line 120, and a first vision inspection device 140 is provided on the opposite side.

[0095] In some embodiments of this application, a first indicator light 150 is provided on the assembly station 170. When the material box 20 placed on the assembly station 170 is empty, the first indicator light 150 flashes. When the material box 20 placed on the assembly station 170 is filled with material, the first indicator light 150 turns off.

[0096] In some embodiments of this application, a second indicator light 240 is provided on the material placement area 280. When the material placement area 280 needs to discharge material, the second indicator light 240 flashes. When the material placement area 280 does not need to discharge material, the second indicator light 240 turns off.

[0097] In some embodiments of this application, when the material box 20 placed on the assembly station 170 is empty, the assembly station 170 sends a material replenishment request to the control terminal, the control terminal sends a material replenishment instruction to the material replenishment line 200, the second robot 220 picks up and places the material box 20 in the material bin 210 onto the second conveyor line 230, and the material box 20 is transported to the corresponding assembly station 170 via the first conveyor line 120.

[0098] The manufacturing execution system (MES) enables real-time monitoring and data management of the production process; the warehouse management system (WMS) accurately records the location and logistics path of each material, improving warehousing efficiency; and each assembly station 170 on the production line is equipped with a vision inspection device to read information from material labels in real time, ensuring accurate supply of raw materials during production. If materials at a certain assembly station 170 run out, the system can promptly remind the worker to replenish them, preventing production line downtime.

[0099] In some embodiments of this application, the second conveyor line 230 includes an AGV 250, a second robot 220 is configured to transfer the material box 20 between the material bin 210 and the AGV 250, and the AGV 250 is configured to transport the material box 20 to the first conveyor line 120.

[0100] The AGV250 is used to transfer the material frame 20. Compared with the structure of the conveyor belt, the AGV250 has the advantages of flexible movement and small footprint.

[0101] For example, refer to Figure 5 The second conveyor line 230 consists of an AGV 250 and a conveyor belt 290, with the conveyor belt 290 connecting to the first conveyor line 120. AGV movement path markers are laid on the ground. The AGV 250 places the material frame 20 onto the conveyor belt 290, which then transfers it to the first conveyor line 120.

[0102] For example, refer to Figure 6 The second conveyor line 230 includes only AGV 250, and AGV movement path markers are laid on the ground. AGV 250 places the material box 20 onto the first conveyor line 120.

[0103] Figure 5 and Figure 6 In the diagram, the number of assembly stations 170 on the first conveyor line 120 is for illustrative purposes only.

[0104] In some embodiments of this application, multiple assembly stations 170 are arranged in at least two spatial regions, which are arranged vertically, and materials are transported between two adjacent spatial regions via a first conveying device 130.

[0105] Arranging multiple assembly stations 170 in multiple spatial areas along the vertical direction helps reduce the floor space required for the production line. The first conveying device 130 is, for example, a lifting device or a conveyor belt with a height difference, to realize the transfer of materials between spatial areas at different heights.

[0106] For example, refer to Figure 4 Multiple assembly stations 170 are arranged in two spatial areas, one above the other, designated as upper spatial area 161 and lower spatial area 162. Compressor installation station I-01, gas-liquid separator installation station I-02, first screw fixing station I-03, outdoor heat exchanger installation station I-04, middle partition plate installation station I-05, left side plate installation station I-06, piping assembly installation station I-07, welding auxiliary mechanical and manual station I-08, and welding station I-09 are located in lower spatial area 162. The outdoor fan installation station I-10, air tightness testing station I-11, vacuum filling station I-12, commodity inspection station I-13, connector disassembly station I-14, automatic halogen inspection station I-15, rear cover assembly installation station I-16, rear cover protective net installation station I-17, bottom support installation station I-18, second screw fixing station I-19, and automatic packaging station I-20 are located in the upper space area 161.

[0107] In some embodiments of this application, reference is made to Figure 1 Along the material conveying direction, the first conveyor line 120 located in any spatial area transfers the empty material frame 20 between the second conveyor line 230 and the last assembly station 170. Figure 1 Solid arrows represent the material conveying path, while dashed arrows represent the conveying path of empty material boxes 20.

[0108] In other words, taking the layout of multiple assembly stations 170 in two spatial areas as an example, the entire outdoor unit production line is equipped with a material warehouse 210. When replenishing materials, the material boxes 20 in the material warehouse 210 are transported to the first conveyor line 120 in the lower spatial area 162 via the second robot 220 and the second conveyor line 230. The material boxes 20 are then transported by the first conveyor line 120 to the corresponding assembly station 170. When an empty material box 20 appears at a certain assembly station 170, the first robot 110 at that assembly station 170 picks up and places the empty material box 20 onto the first conveyor line 120. The empty material box 20 in the lower space area 162 is conveyed from the last assembly station 170 (e.g., welding station I-09) in the lower space area 162 to the second conveyor line 230, and then returned to the material warehouse 210. The empty material box 20 in the upper space area 161 is conveyed from the last assembly station 170 (e.g., automatic packaging station I-20) in the upper space area 161 to the second conveyor line 230, and then returned to the material warehouse 210.

[0109] The entire intelligent production line is configured as a single material warehouse 210, facilitating centralized storage and management of materials. The upper space area 161 and the lower space area 162 independently transfer empty material boxes 20, which helps improve box return efficiency.

[0110] In some embodiments of this application, reference is made to... Figure 2 Along the material conveying direction, the first conveyor line 120 located in any spatial area transfers the fully loaded material frame 20 between the first assembly station 170 and the second conveyor line 230. Figure 2 Solid arrows represent the material conveying path, while dashed arrows represent the conveying path of empty material boxes 20.

[0111] In other words, taking a layout of multiple assembly stations 170 in two spatial areas as an example, the entire outdoor unit production line is equipped with one material bin 210. The conveying path of the empty material bin 20 is... Figure 1The process is the same and will not be repeated. When a certain assembly station 170 in the lower spatial area needs to be replenished, the corresponding material box 20 in the material bin 210 moves to the first assembly station 170 in the lower spatial area 162 (e.g., compressor installation station I-01) via the second robot 220 and the second conveyor line 230, and then moves to the corresponding assembly station 170 via the first conveyor line 120. When a certain assembly station 170 in the upper spatial area 161 needs to be replenished, the corresponding material box 20 in the material bin 210 moves to the first assembly station 170 in the upper spatial area 161 (e.g., outdoor fan installation station I-10) via the second robot 220 and the second conveyor line 230, and then moves to the corresponding assembly station 170 via the first conveyor line 120.

[0112] The upper space region 161 and the lower space region 162 adopt independent feeding paths, which helps to improve feeding efficiency.

[0113] In some embodiments of this application, the material supply line 200 includes multiple sub-material supply lines 270, which are correspondingly arranged with multiple spatial regions. For example, the material supply line 200 includes two sub-material supply lines 270, each of which is equipped with a material bin 210, a second robot 220, and a second conveyor line 230. Multiple assembly stations 170 are arranged in upper and lower spatial regions. One sub-material supply line 270 supplies materials to the assembly station 170 in the lower spatial region 162, and the other sub-material supply line 270 supplies materials to the assembly station 170 in the upper spatial region 161.

[0114] By replenishing materials to assembly stations 170 in different spatial areas through multiple independent sub-material replenishment lines 270, it is helpful to improve the replenishment efficiency in each spatial area and the return efficiency of empty material boxes 20.

[0115] In some embodiments of this application, an intelligent production line for indoor units is provided. Figure 17 This is a schematic diagram of the layout of an indoor unit intelligent production line. The indoor unit intelligent production line includes multiple assembly stations, which are arranged sequentially along the fourth conveyor line 350.

[0116] The indoor unit intelligent production line includes: Indoor fan installation station II-01; Indoor heat exchanger installation station II-02; Indoor heat exchanger spraying station II-03; Indoor water tray installation station II-04; Indoor back cover installation station II-05; Indoor screw fastening station II-06; and Indoor unit packaging station II-07.

[0117] The indoor fan installation station II-01, indoor heat exchanger installation station II-02, indoor heat exchanger spraying station II-03, water tray installation station II-04, rear cover installation station II-05, screw fastening station II-06, and packaging station II-07 are arranged sequentially along the fourth conveyor line 350.

[0118] In some embodiments of this application, a heat exchanger spraying system 300 is provided. Figure 18 This is a structural diagram of a heat exchanger spraying system 300. The spraying system is configured to spray a heat exchanger.

[0119] The intelligent production line for indoor units includes an indoor heat exchanger spraying station II-03, which uses a heat exchanger spraying system 300 to spray the indoor heat exchangers. Embedding the heat exchanger spraying system 300 into the intelligent production line for indoor units improves production efficiency.

[0120] In some embodiments of this application, reference is made to Figure 17 Along the conveying direction of the fourth conveyor line 350, the indoor heat exchanger spraying station II-03 is located downstream of the indoor heat exchanger installation station II-02. After the indoor heat exchanger 30 is installed, it is then sprayed. The heat exchanger spraying process is embedded in the indoor unit intelligent production line, resulting in a higher degree of production line integration.

[0121] In other embodiments of this application, the indoor heat exchanger spraying station II-03 is set up independently. After the indoor heat exchanger 30 is sprayed at the spraying station, it is transported to the fourth conveyor line 350 by a robot or conveying device to participate in the subsequent indoor unit assembly process.

[0122] In some embodiments of this application, reference is made to Figure 19 The heat exchanger includes heat exchange tubes configured to circulate refrigerant. The heat exchanger also includes a plurality of spaced-apart fins 31, each fin 31 having a perforation 32 through which the heat exchange tube passes. Figure 19 The image shows a straight-line heat exchanger. The heat exchanger also includes U-shaped heat exchangers. Figure 19 For example, the length direction of the heat exchanger is denoted as X, the width direction as Y, and the thickness direction as Z.

[0123] Reference Figure 18 The spraying system includes a spraying robot 310, the end of which is equipped with a spray head 311, which is configured to spray the fins 31. A first guide rail 370 is provided on the ground, and the spraying robot 310 moves along the first guide rail 370.

[0124] During spraying, the spray head 311 is located on one side of the heat exchanger, spraying paint from one side of the heat exchanger to the other. The spraying area is controlled by parameters such as the range of motion and amplitude of the spray head 311, the spraying pressure of the spray head 311, and the distance between the spray head 311 and the heat exchanger.

[0125] The nozzle 311 is a dual-fluid atomizing nozzle with a nozzle diameter of 0.3mm, ensuring that the diameter of the atomized particles is ≤10μm, and ensuring that the coating uniformly covers the surface of the fin 31.

[0126] The spraying system also includes a paint tank configured to supply paint to the spray head 311, the paint containing a capsule 380 filled with a repair agent.

[0127] The spraying system also includes a vision device 320, which is configured to acquire image information of the heat exchanger.

[0128] The spraying system also includes a control system that communicates with the spraying robot 310 and the vision device 320. The control system is configured to analyze the size data of the heat exchanger based on the image information of the heat exchanger in order to control the movement of the spray head 311.

[0129] The spraying system also includes a magnetic field generator 360, which is configured to emit a magnetic field toward the heat exchanger.

[0130] The capsule 380 is configured to move toward the perforation 32 under the action of a magnetic field. The capsule 380 is also configured to break when subjected to external force to release the internal repair agent and repair the coating of the fin 31.

[0131] Specifically, the paint sprayed from the nozzle 311 has a repair function. The paint contains a capsule 380, which is filled with a repair agent containing siloxane and a catalyst.

[0132] The outer diameter of capsule 380 is in the nanometer range, and the particle size of capsule 380 is 5-20 μm. Figure 21 This is a structural diagram of the capsule section 380. The outer shell of the capsule section 380 has a spherical core-shell structure to ensure uniform force distribution under the action of a magnetic field.

[0133] The capsule portion 380 is made of iron oxide (Fe3O4) and silicon dioxide. The capsule portion 380 uses iron oxide nanoparticles, which are coated with silicon dioxide using a sol-gel method to form a core-shell structure. The iron oxide gives the capsule portion 380 high magnetic susceptibility, facilitating precise control of its movement trajectory via an external magnetic field. The silicon dioxide provides the capsule portion 380 with chemical inertness and a certain degree of mechanical strength, protecting the core from environmental corrosion, while adjusting the degree of cross-linking to regulate the shell's rupture threshold.

[0134] The repair agent is encapsulated in the inner cavity of the capsule 380 using microfluidic technology. When the fin 31 cracks due to corrosion or mechanical load, a high-stress zone is formed at the crack tip. The local stress, tensile stress, shear stress, etc. generated by the crack propagation exceed the mechanical strength threshold of the capsule 380 shell, causing the capsule 380 shell to rupture and release the repair agent.

[0135] By adjusting the thickness and cross-linking degree of the capsule portion 380 shell or adding toughening agents, the mechanical strength and sensitivity of the shell are balanced. The capsule portion 380 is pre-embedded in the root of the fin 31, and the triggering efficiency is improved in areas of the coating that are prone to stress concentration.

[0136] The magnetic field generating device 360 ​​employs an electromagnetic array device, which generates a gradient magnetic field. The capsule section 380, driven by magnetic force within this magnetic field, concentrates its magnetic field towards the root region of the fin 31 (i.e., the location of the perforation 32), where the magnetic field strength is high. The formula is:

[0137] F = ▽(M × B)

[0138] Where F is the magnetic force (in N) that drives the capsule to move, M is the magnetization intensity of the capsule 380 (in A / m), and B is the magnetic induction intensity (in T) of the gradient magnetic field generated by the electromagnetic array device.

[0139] The electromagnetic array device adjusts the magnetic field gradient according to the fin gap to ensure that the bladder portion 380 is deposited in a limited manner at the root region of the fin 31, which is prone to corrosion. The magnetic field adjustment satisfies the formula:

[0140] ▽B=k / d 2

[0141] Where: ▽B is the magnetic field gradient (unit T / m), and k is the material-process coefficient (unit Tm). 2 d is the fin gap width, which is the minimum distance between adjacent fins (in meters).

[0142] During the processing of fin 31, a flange is formed around the perforation 32. The presence of the flange makes the distance between two adjacent fins 31 at the position of the perforation 32 the smallest. Therefore, the magnetic field strength at the perforation 32, that is, at the root of the fin 31, is the largest. Thus, the capsule part 380 can move towards the perforation 32 under the action of the magnetic field to be deposited near the perforation 32.

[0143] The root of fin 31 is a location prone to corrosion. After fin 31 is corroded, cracks will appear on the surface. When the local stress, tensile stress, shear stress, etc. generated by the crack propagation exceed the mechanical strength threshold of the capsule 380 shell, the capsule 380 shell will break and release a repair agent, thereby repairing the corroded area of ​​fin 31.

[0144] In some embodiments of this application, the spray head 311 is located on one side of the heat exchanger. The spray head 311 moves along the length direction X of the heat exchanger in a sinusoidal trajectory, while also moving along the width direction Y of the heat exchanger. Compared to the traditional segmented spraying method, this spraying path is more efficient.

[0145] In some embodiments of this application, when the nozzle 311 moves along the Y direction, the nozzle 311 oscillates back and forth along the Y direction, and the oscillation amplitude of the nozzle 311 is positively correlated with the gap between two adjacent fins 31. The formula is:

[0146]

[0147] Where A is the amplitude of the lateral oscillation of the spray head 311 (in mm), kA is the proportionality coefficient (unitless), and d is the gap between fins 31, that is, the minimum distance between adjacent fins 31 (in mm). The smaller the gap between fins 31, the lower the oscillation amplitude of the spray head 311, so as to avoid the paint clogging the gap.

[0148] The lower limit of the oscillation amplitude of the nozzle 311 is 0.5 mm, which is suitable for dense areas with d ≤ 0.8 mm. The upper limit of the oscillation amplitude of the nozzle 311 is 3.0 mm, which is suitable for sparse areas with d ≥ 2.5 mm.

[0149] In some embodiments of this application, when the nozzle 311 moves along the Y direction, the nozzle 311 oscillates back and forth along the Y direction, and the oscillation frequency of the nozzle 311 is positively correlated with the density of the fins 31. The formula is:

[0150] f = kf·ρ

[0151] Where f is the oscillation frequency of the spray head 311 (in Hz), kf is the density-frequency coefficient (in Hz mm / fin 31), and ρ is the fin density 31, which is the number of fins 31 per unit length (in fins 31 / mm). The higher the fin density 31, the greater the oscillation frequency of the spray head 311, thereby improving the spraying coverage efficiency.

[0152] When the spraying pressure increases, the oscillation frequency of the spraying section increases synchronously to match the output rate of atomized particles.

[0153] The fundamental oscillation frequency of the nozzle 311 is 5Hz, which is suitable for sparse areas with ρ≤10 fins 31 / cm.

[0154] The upper limit of the oscillation frequency of the nozzle 311 is 20Hz, which is suitable for dense areas with ρ≥30 fins 31 / cm.

[0155] In some embodiments of this application, the heat exchanger has a straight section region and a bent section region, and the spray head 311 sprays the straight section region and the bent section region separately.

[0156] In other words, for a U-shaped heat exchanger, the spray head 311 sprays the heat exchanger in sections, for example, spraying the straight section first and then the curved section. When the spray head 311 passes through the curved section, it generates an arc or zigzag path along the outer edge of the curved section to ensure that the spray head 311 maintains a preset safe distance from the curved section.

[0157] In some embodiments of this application, the moving path of the nozzle 311 is within the projection range of the heat exchanger, and the moving speed and oscillation amplitude of the nozzle 311 are reduced when it approaches the boundary of the heat exchanger.

[0158] In other words, the vision device 320 extracts the boundary of the fin 31 in real time and generates a dynamic no-go zone for spraying. The movement path of the spray head 311 is strictly limited to the projection range of the fin 31. A gradient deceleration strategy is adopted in the edge area, reducing the movement speed and amplitude when approaching the boundary to prevent paint splashing.

[0159] In some embodiments of this application, the heat exchanger spraying system 300 further includes a UV curing device 340, configured to cure the coating on the sprayed heat exchanger. The UV curing device 340 is prior art and will not be described in detail here.

[0160] The heat exchanger spraying system 300 also includes a third conveyor line 390, a magnetic field generating device 360 ​​and a UV curing device 340 arranged at intervals along the length of the third conveyor line 390, and the magnetic field generating device 360 ​​generates a magnetic field on the heat exchanger placed on the third conveyor line 390.

[0161] Will Figure 18 The heat exchanger spraying system 300 shown is applied to Figure 17 In the indoor unit intelligent production line shown, the third conveyor line 390 is connected to the fourth conveyor line 350, thus embedding the spraying system into the indoor unit intelligent production line.

[0162] In some embodiments of this application, the spraying process of the heat exchanger spraying system 300 includes:

[0163] The vision device 320 acquires point cloud data of the heat exchanger fins 31 and extracts topological parameters such as the tilt angle, spacing, and height of the fins 31.

[0164] A spatial topological relationship model of fin 31 is constructed based on graph neural network (GNN) to generate surface curvature distribution and gap width data of fin 31.

[0165] According to the model, the spraying path is decomposed into "the spray head 311 moves along the length direction X of the heat exchanger while also swinging and sweeping along the width direction X of the heat exchanger". The spray head 311 moves along the length direction X of the heat exchanger with a sinusoidal trajectory. The amplitude and frequency of the spray head 311 are adaptively adjusted by the gap of the fins 31 to ensure that the coating penetrates into the root of the fins 31 and does not block the gap.

[0166] The compressed air pressure of the nozzle 311 is adjusted in real time by a PID algorithm to adapt to different fin density regions 31, increasing the pressure in dense regions and decreasing the pressure in sparse regions.

[0167] The mass flow meter 330 monitors the paint flow rate in real time. If the deviation exceeds ±5%, an alarm is triggered and spraying is suspended. The abnormality is recorded by the MES system.

[0168] The painting robot 310 moves along the planned path of the first guide rail 370, and the spray head 311 sprays atomized particles with a diameter of 0.3mm to evenly cover the surface of the fin 31.

[0169] After spraying, the heat exchanger enters the UV curing unit 340, at a wavelength of 365nm and a UV curing temperature of 500W / m. 2 Irradiate at the specified power for 30 seconds to complete the cross-linking and curing of the coating.

[0170] The spraying parameters (coating thickness, repair agent content, etc.) are uploaded to the IoT platform via the OPC UA protocol and bound to the MES system to achieve full lifecycle quality traceability.

[0171] In some embodiments of this application, reference is made to Figure 22 A heat exchanger production line is provided, comprising a support frame 50, a fin conveyor line 40, and a plurality of processing devices arranged along the conveying direction of the fin conveyor line 40. The fin conveyor line 40 is mounted on the support frame 50 and, along the conveying direction of the fin conveyor line 40, is provided at least a fin storage and retrieval position, an end plate mounting position, a tube insertion position, and a nitrogen filling position.

[0172] The processing equipment includes a fin storage and retrieval device 400 corresponding to the fin storage and retrieval position, an end plate mounting device 500 corresponding to the end plate mounting position, a tube insertion device 600 corresponding to the tube insertion station, and a nitrogen filling device 700 corresponding to the nitrogen filling station.

[0173] Combination Figure 30 Specifically, the fin conveying line 40 includes an upstream conveying line 41 and a downstream conveying line 42. The upstream conveying line 41 includes multiple rollers 4101 spaced apart along the conveying direction of the upstream conveying line 41. Each roller 4101 is connected to a motor, and the motor drives the rollers 4101 to roll, thereby conveying the fin stack 60.

[0174] The downstream conveyor line 42 includes a conveyor drive and a conveyor belt. The conveyor drive drives the conveyor belt to move, thereby achieving the purpose of conveying the fin stack 60 between various workstations. When the fin stack 60 is conveyed to the corresponding processing workstation, the conveyor drive is turned off. After processing is completed, the conveyor drive is turned on to continue conveying to the next workstation.

[0175] The fin storage and retrieval device 400 is located at the end of the fin conveyor line 40 and is used to transfer the fin stack 60 formed by the fins processed by the aluminum sheet uncoiling machine and the punching machine to the fin conveyor line 40. The fin stack 60 is then processed through subsequent processes to form a heat exchanger or evaporator.

[0176] The end plate mounting position and the tube insertion position are located on the upstream conveyor line 41, and the nitrogen filling position is located on the downstream conveyor line 42.

[0177] An expansion tube device 43 and a drying device 44 are also installed between the upstream conveyor line 41 and the downstream conveyor line 42. The fin stack 60 is transported between the upstream conveyor line 41 and the expansion tube device 43, between the expansion tube device 43 and the drying device 44, and between the drying device 44 and the downstream conveyor line 42 by a transfer robot 45.

[0178] Downstream conveyor line 42 is also equipped with a pipe bending station, a welding station and a helium filling station. The pipe bending station is located upstream of the nitrogen filling station, and the welding station and the helium filling station are located downstream of the nitrogen filling station along the conveying direction of downstream conveyor line 42.

[0179] Since the downstream conveyor line 42 is started and stopped by a conveyor drive, the layout of each station needs to meet the following requirements: in the shutdown state, each station can perform corresponding processing operations; during conveying, the corresponding fin stack 60 is synchronously conveyed to the next processing station.

[0180] The following is a detailed description of the processing equipment involved:

[0181] refer to Figures 23-25 The fin storage and retrieval device 400 includes a storage and retrieval bracket 410, a support base plate 420, a lifting support plate 430, and an unloading robot 450. The storage and retrieval bracket 410 is a frame structure with storage positions formed inside. The support base plate 420 is horizontally set on the storage and retrieval bracket 410, specifically at the bottom of the storage positions formed inside the storage and retrieval bracket 410.

[0182] A blanking pin 61 is vertically installed on the support base plate 420. The bottom of the blanking pin 61 is fixed on the support base plate 420, and the top of the blanking pin 61 is vertically upward. It is used to position the fins that have been processed and formed and are placed into the storage position.

[0183] The length direction of the fin is defined as the first direction, the width direction of the fin as the second direction, and the thickness direction of the fin as the third direction. Along the second direction, multiple sets of fin stacks 60 are formed in the storage position. Each set of fin stacks 60 includes multiple fins stacked on the drop pin 61 along the third direction.

[0184] Combination Figure 27 The off-line robot 450 is used to transfer each set of fin stacks 60 to the upstream conveyor line 41.

[0185] The lifting support plate 430 is arranged parallel above the support base plate 420 and is movably connected to the storage bracket 410 along the third direction. A connecting hole 432 is formed on the lifting support plate 430, and a through insertion hole is formed on the fin. The dropping needle 61 is connected to the corresponding insertion hole through the connecting hole 432.

[0186] The storage and retrieval bracket 410 is equipped with a lifting cylinder 440. The output end of the lifting cylinder 440 is connected to the lifting support plate 430, which is used to drive the lifting support plate 430 to move along the height direction of the storage and retrieval bracket 410.

[0187] When the lifting support plate 430 moves up and down along the third direction, the dropping needle 61 remains fixed, while the insertion hole and the connecting hole 432 move up and down relative to the dropping needle 61.

[0188] After the fin stack 60 is formed in the storage position, a positioning pin 62 is also provided on the fin stack 60.

[0189] The positioning pin 62 is set in the reserved insertion hole. One end of the positioning pin 62 is supported on the lifting support plate 430, and the other end extends to the top of the fin stack 60.

[0190] The lifting support plate 430 and the positioning pin 62 are not designed with a connecting hole 432. As the lifting support plate 430 moves up and down, the positioning pin 62 also moves, always connecting the fins in the same fin stack 60 together.

[0191] The off-line robot 450 specifically includes an off-line robot body 451 and an off-line fixture 452, with the off-line fixture 452 mounted on the off-line robot body 451.

[0192] The robot body 451 includes a robot base 4511, a robot upper arm 4512, and a robot lower arm 4513 connected in sequence.

[0193] In addition, the off-line robot 450 also includes a robot motor and a vision camera. The off-line robot base 4511 is fixed to the ground by bolts, and the robot motor is connected to the off-line robot 450 by bolts to the off-line robot base 4511. The off-line robot base 4511, the off-line robot upper arm 4512 and the off-line robot lower arm 4513 are all connected by sliding joints. The vision camera is set on the off-line fixture 452 and is used to obtain the position information of the fin stack 60.

[0194] refer to Figures 28-30 The unloading clamp 452 includes a first unloading clamp 4521 and a second unloading clamp 4522 arranged symmetrically. The first unloading clamp 4521 and the second unloading clamp 4522 are respectively provided with clamping parts for clamping the two ends of the positioning pin 62.

[0195] The off-line robot 450 is configured to grip both ends of the fin stack 60 on the lifting support plate 430 and transfer it to the target position, that is, to grip the fin stack 60 onto the upstream conveyor line 41.

[0196] Along the length of each fin, at least one positioning pin 62 is inserted at each end of the fin stack 60. The bottom of the positioning pin 62 contacts the lifting support plate 430, and the top of the positioning pin 62 extends to the upper end of the fin stack 60. The first lower wire clamp 4521 and the second lower wire clamp 4522 are used to clamp the upper end and the lower end of the positioning pin 62, respectively.

[0197] The first unloading clamping member 4521 and the second unloading clamping member 4522 are respectively connected to the end of the unloading robot forearm 4513 via clamping power members. The first unloading clamping member 4521 includes two first unloading grippers spaced apart, and the second unloading clamping member 4522 includes two second unloading grippers spaced apart. The first unloading grippers are used to clamp the upper end of the positioning pin 62, and the second unloading grippers are used to clamp the lower end of the positioning pin 62.

[0198] There can be two clamping power components, each of which includes an output end, which is connected to the first lower wire gripper and the second lower wire gripper respectively.

[0199] Alternatively, there may be one clamping power component with two output ends located on either side of the clamping power component and connected to the first lower wire gripper and the second lower wire gripper, respectively.

[0200] The first and second lower wire clamps are respectively connected to the clamping power component via the adapter plate 4523. That is, the output end of the clamping power component is connected to the adapter plate 4523, and the first and second lower wire clamps are respectively connected and fixed to the adapter plate 4523 on the corresponding side.

[0201] A first positioning clamping plate perpendicular to the adapter plate 4523 is formed on the first lower clamping jaw, and at least one first positioning recess with an opening facing the second lower clamping jaw is formed on the first positioning clamping plate.

[0202] A second positioning clamping plate 4524 perpendicular to the adapter plate 4523 is formed on the second lower clamping jaw, and at least one second positioning recess 4525 with an opening facing the first lower clamping jaw is formed on the second positioning clamping plate 4524.

[0203] In the clamping state, the upper end of the positioning pin 62 is inserted into the first positioning recess, and the lower end of the positioning pin 62 is inserted into the second positioning recess 4525.

[0204] The first lower clamp also includes a first connecting plate, which is perpendicular to the first positioning clamp. The first positioning clamp is detachably connected to the adapter plate 4523 via the first connecting plate.

[0205] The second lower clamp also includes a second connecting plate 4527, which is perpendicular to the second positioning clamp 4524. The second positioning clamp 4524 is detachably connected to the adapter plate 4523 via the second connecting plate 4527.

[0206] The first connecting plate and the first positioning clamp are integral structures, and the second connecting plate 4527 and the second positioning clamp 4524 are integral structures. Reinforcing ribs 4528 are respectively provided between the first connecting plate and the first positioning clamp, and between the second connecting plate 4527 and the second positioning clamp 4524, to improve the connection strength between the first connecting plate and the first positioning clamp, and between the second connecting plate 4527 and the second positioning clamp 4524.

[0207] The end of the second positioning clamp 4524 corresponding to the lower end of the fin stack 60 is formed with a guide slope 4526. The guide slope 4526 is used to lift the bottom fin of the fin stack 60 and guide the lower end of the positioning pin 62 into the second positioning recess 4525 during the process of the second lower line clamp moving to the bottom of the fin stack 60.

[0208] To facilitate the clamping of the second positioning clamping plate 4524, in some embodiments of this application, an upwardly extending support protrusion 431 is formed on the lifting support plate 430, and the length of the support protrusion 431 along the first direction is less than the length of the fin.

[0209] Each fin stack 60 is supported on the support protrusion 431. Under the action of the support protrusion 431, a clamping gap is formed between the bottom of each fin stack 60 and the lifting support plate 430. The second lower line clamping member 4522 moves from the clamping gap to the bottom of the fin stack 60 and clamps the positioning pin 62.

[0210] To avoid interference between the adapter plate 4523 on the second positioning clamping plate 4524 and the support protrusion 431 during the clamping process, this application designs the length of the second connecting plate 4527 to extend downward so that the adapter plate 4523 is located above the support protrusion 431 during the clamping process of the second positioning clamping plate 4524, thus avoiding interference.

[0211] refer to Figures 31-32 The fin conveyor line 40 has end plate mounting positions, and the end plate mounting equipment 500 is adapted to the end plate mounting positions.

[0212] The end plate installation equipment 500 includes an end plate installation robot 510 and a lifting stop 520. The end plate installation robot 510 is symmetrically arranged on both sides of the fin conveyor line 40 and is used to simultaneously install end plate parts 63 at both ends of the fin stack 60.

[0213] Each endplate installation robot 510 includes an endplate robot body 511, a connecting beam 512, a clamping power component, and two endplate clamps 513. The connecting beam 512 is mounted on the endplate robot body, the clamping power component is mounted on the connecting beam 512, and the two endplate clamps 513 are mounted on the clamping power component. Under the action of the clamping power component, the two endplate clamps 513 move relative to each other or towards each other to clamp or release the endplate 63.

[0214] The clamping power component is located along the length of the connecting beam 512, and has a first telescopic end and a second telescopic end. Two end plate clamps 513 are respectively installed on the first telescopic end and the second telescopic end.

[0215] Alternatively, in some other embodiments, the clamping power member corresponds one-to-one with the end plate clamp 513, and the two clamping power members are symmetrically arranged on the connecting beam 512, with the end plate clamp 513 installed at the output end of the clamping power member.

[0216] An end plate mounting position is formed on the fin conveyor line 40. The stop part 522 is located downstream of the end plate mounting position. When the fin stack 60 is conveyed to the end plate mounting position along the fin conveyor line 40, the stop part 522 rises above the roller 4101.

[0217] The lifting stop 520 is installed on the fin conveyor line 40. Before the fin stack 60 is conveyed to the end plate installation position, the lifting stop 520 rises to stop the fin stack 60.

[0218] The lifting stop 520 specifically includes a lifting drive 521 and a stop part 522. The lifting drive 521 is used to be set below the fin conveyor line 40, and the stop part 522 is installed at the output end of the lifting drive 521. Under the action of the lifting drive 521, the stop part 522 moves up and down between the corresponding adjacent rollers 4101 on the fin conveyor line 40, and is used to stop and correct the fin stack 60 at the corresponding position on the fin conveyor line 40.

[0219] The stop part 522 includes two or more stops 5221 spaced apart along the axial direction of the roller 4101. Both stops 5221 are connected to the output end of the lifting drive 521. The lifting drive 521 drives the two stops 5221 to rise simultaneously. Before the fin stack 60 is conveyed to the end plate mounting position, the two stops 5221 rise above the roller 4101, stopping the forward conveying of the fin stack 60.

[0220] When the fin stack 60 is angularly misaligned with the roller 4101, the stop block 5221 can straighten the fin stack 60 to be parallel to the axis of the roller 4101, which facilitates the installation of the end plate 63 by the short board robot.

[0221] An endplate clamping position is formed between the two endplate clamps 513 of the endplate installation robot 510. A pusher 514 extending towards the endplate clamping position is provided on the connecting beam 512. The pusher 514 includes a pusher power member and a pusher end. The pusher power member is fixed on the connecting beam 512, and the pusher end is fixed on the output end of the pusher power member.

[0222] The fin conveyor line 40 is also equipped with a pallet 4102, on which the fin stack 60 is placed. The lifting member 530 is located upstream of the lifting stop member 520 and includes a lifting cylinder and a top block. The lifting cylinder is located below the end plate mounting position, and the top block is installed at the output end of the lifting cylinder. Under the action of the lifting cylinder, the top block moves up and down between the corresponding rollers 4101 to lift the pallet conveyed to the top block mounting position upward.

[0223] The conveying direction of the fin conveyor line 40 is defined as the X direction, the width direction of the fin conveyor line 40 is defined as the Y direction, the height direction of the fin conveyor line 40 is defined as the Z direction, the dimension of the end plate 63 along the Z direction is the width of the end plate 63, the dimension of the fin stack 60 along the Z direction is the width of the fin stack 60, the width L1 of the end plate 63 is greater than the width L2 of the fin stack 60, and the thickness L3 of the support plate 4102 satisfies: L3>(L1-L2) / 2, so as to avoid interference between the end plate 63 and the roller 4101 when the end plate 63 is installed at both ends of the fin stack 60.

[0224] An inspection element 550 is also provided upstream of the end plate mounting position. The inspection element 550 is specifically installed on the support frame 50, located on one side of the roller 4101. The inspection element 550 is connected to the controller 70. The controller 70 is connected to the lifting drive 521 and the lifting cylinder. The controller 70 is used to receive the inspection signal from the inspection element 550 and control the movement of the lifting drive 521 and the lifting cylinder.

[0225] The controller 70 is the control center of the entire processing line. It is used to control the start and stop of the fin conveyor line 40, the operation of each robot, and the switching on and off of each piece of equipment. The control process is existing technology and will not be described in detail.

[0226] In some other embodiments, the fin conveyor line 40 is also provided with a centering assembly 540, which includes two centering beams 541 symmetrically arranged on the fin conveyor line 40. The centering beams 541 are located downstream of the end plate mounting position, and a centering channel is formed between the centering beams 541 for centering the pallet to the middle position of the fin conveyor line 40.

[0227] Each pair of crossbeams 541 has a guide section 542 at one end near the end plate mounting position, and a guide channel that gradually narrows along the conveying direction of the fin stack 60 is formed between the two guide sections 542.

[0228] The centering beam 541 is fixed to the support frame 50 by the centering bracket 543, and the height of the centering beam 541 is lower than the positioning pin 62 on the fin stomp.

[0229] After the end plate is installed, the stop block 5221 on the lifting stop 520 descends, and the fin stack 60 continues to be conveyed downward along the fin conveyor line 40.

[0230] After the end plates 63 at both ends of the fin stack 60 pass through the guide channel, under the action of the guide section 542, the fin stack 60 moves to the middle position of the fin conveying line 40, improving the position accuracy of the fin stack 60 during conveying, and making it easier for the tube insertion robot 610 to operate during subsequent tube insertion.

[0231] Each of the two end plate clamps 513 has multiple limiting protrusions on its opposite side. The limiting protrusions of each end plate clamp 513 form a clamping position for limiting the end plate 63. When clamped, the end of the end plate 63 is located between the limiting protrusions, which restricts the position of the end plate 63 and prevents the end plate 63 from coming off the end plate clamp 513.

[0232] refer to Figures 34-37 Similar to the off-line robot body 451, the endplate robot body 511 includes an endplate robot base, an endplate robot upper arm, and an endplate robot lower arm connected in sequence.

[0233] In addition, the endplate robot also includes a robot motor and a vision camera. The endplate robot base is fixed to the ground with bolts, and the robot motor is connected to the endplate robot base with bolts. The endplate robot base, the endplate robot upper arm, and the endplate robot lower arm are all connected by sliding joints. The vision camera is set on the endplate fixture 513 to obtain the position information of the fin stack 60 and the positioning pin 62.

[0234] The end plate 63 is also provided with through holes corresponding to the fins. The end plate 63 is inserted into the positioning pin 62 through the corresponding through holes. After the end plate 63 is inserted, the pushing power component drives the pushing end to push the end plate 63 forward. The two end plates 63 on both sides are pushed towards the middle at the same time. In addition to installing the end plate 63 in place, the gaps between the fins are eliminated, making the connection between the fins tight.

[0235] After installation, the fin stack 60 is conveyed downwards to the tube insertion station via the fin conveyor line 40.

[0236] A tube insertion device 600 is installed next to the tube insertion station. The tube insertion device 600 grabs the tube component 64 and inserts the tube component 64 into the insertion hole in the fin stack 60.

[0237] For details, please refer to Figure 38 , Figure 39 The intubation device 600 includes an intubation robot 610, which includes an intubation robot body 611 and an intubation clamp 612. The intubation clamp 612 is connected to the intubation robot body 611 and includes two intubation components spaced apart. Each intubation component includes an intermediate connecting part 613 and at least one pipe gripper 614 disposed on the intermediate connecting part 613. The intubation device 600 grips the pipe component 64 through the pipe gripper 614 and inserts the pipe component 64 into the fin stack 60 under the drive of the intubation robot body 611.

[0238] In addition, the intubation robot 610 also includes a robot motor and a vision camera. The intubation robot base is fixed to the ground by bolts, and the robot motor is connected to the intubation robot base by bolts. The intubation robot base, the intubation robot upper arm, and the intubation robot lower arm are all connected by sliding joints. The vision camera is set on the intubation fixture 612 to obtain the position information of the fin stack 60 and the insertion hole.

[0239] Each pipeline clamp 614 includes a clamping cylinder 6141 and a clamping end 6142. The clamping cylinder 6141 has a first telescopic end and a second telescopic end. There are two clamping ends 6142, which are respectively set on the first telescopic end and the second telescopic end. Each clamping end 6142 has a clamping recess 6144. The pipeline component 64 is used to clamp in the clamping position formed by the two clamping recesses 6144.

[0240] The pipe fitting 64 has a U-shaped structure. Both ends of the pipe fitting 64 are simultaneously inserted into the corresponding insertion holes of the fin stack 60. In order to improve the stability of clamping the pipe fitting 64, each insertion clamp 612 includes two pipe grippers 614 spaced apart. The pipe grippers 614 on each insertion clamp 612 are used to clamp one side of the pipe fitting 64 for insertion.

[0241] At least two insertion devices 600 are provided at intervals along the conveying direction of the fin conveyor line 40 to improve the insertion efficiency of the pipe fittings 64.

[0242] In addition to inserting tubing components 64, the intubation robot 610 can also disassemble the positioning pin 62. For example, but not limited to, after the upstream intubation robot 610 inserts some tubing components 64, the fin stack 60 is transported to the corresponding position of the downstream intubation robot 610. The downstream intubation robot 610 first disassembles the positioning pin 62 and then inserts the remaining tubing components.

[0243] When the positioning pin 62 is removed, the intubation robot arm of the intubation robot 610 can rotate 90 degrees, and a single positioning pin 62 can be removed using only one of the tube grippers 614. The movement of the intubation robot arm is prior art and is not the focus of this application, so it will not be described in detail here.

[0244] After the tube insertion is completed, the fin stack 60 continues to be conveyed downward to the tube expansion station, where the tube expansion equipment 43 performs tube expansion operation on the pipe component 64.

[0245] After the tube expansion is completed, the fin stack 60 is transferred from the fin conveyor line 40 to the drying equipment 44 by the transfer robot 45 for drying. After drying, the fin stack 60 is transferred to the downstream conveyor line 42 by the transfer robot 45.

[0246] refer to Figure 40 The transfer robot 45 includes a transfer robot body and a transfer fixture. The transfer fixture is set on the transfer robot body and includes a transfer beam 4501, a transfer drive component 4502, and a transfer clamping plate 4503. The transfer beam 4501 is connected to the transfer robot body, and the transfer drive component 4502 is installed on the transfer beam 4501. The transfer drive component 4502 has a first telescopic end and a second telescopic end. There are two transfer clamping plates 4503, which are respectively set on the first telescopic end and the second telescopic end. The transfer clamping plates 4503 are used to clamp the end plate components 63 at both ends of the fin stack 60.

[0247] On the downstream conveyor line 42, the fin stack 60 is connected by bending pipes through the pipe bending equipment 46. Specifically, the pipe bending equipment 46 is a pipe bending robot, whose structure is similar to that of the pipe insertion robot 610. The pipe bending robot grips the U-shaped pipe, positions it through mechanical vision, and inserts it into the pipe fitting 64 on the fin stack 60.

[0248] It should be noted that when the heat exchanger is an outdoor heat exchanger, it needs to be bent into an L-shape in the last step. Therefore, during the insertion of the bent tube, there is a certain height difference between the ends of the two fins of the outdoor heat exchanger after bending. So, it is necessary to tilt the tube at a certain angle when inserting it. For the evaporator, it does not need to be bent, so there is no height difference between the two aluminum fins that make up the evaporator. Therefore, it is not necessary to tilt the tube when inserting it.

[0249] When inserting the bent pipe into the outdoor heat exchanger, the insertion clamp 612 of the insertion robot 610 automatically tilts at a preset angle through the robot's forearm to insert the bent pipe into the pipe fitting 64. After the bent pipe is installed at the end of the fin stack 60, it is conveyed downward to the nitrogen filling station for nitrogen filling.

[0250] refer to Figures 41-46 The nitrogen filling equipment 700 includes a nitrogen filling device 710, a nitrogen filling docking component 720, and a nitrogen filling robot 730. The nitrogen filling device 710 is externally connected to a nitrogen filling pipeline 711. The nitrogen filling docking component 720 is located at the end of the nitrogen filling pipeline 711. A docking channel that gradually expands along the nitrogen filling pipeline 711 is formed inside the nitrogen filling docking component 720.

[0251] The nitrogen filling robot 730 includes a nitrogen filling robot body 731 and a nitrogen filling fixture 732. The nitrogen filling robot 730 is located next to the nitrogen filling station on the fin conveyor line 40. The nitrogen filling fixture 732 is located on the nitrogen filling robot 730 and is configured to clamp the nitrogen filling docking part 720 and dock it with the pipeline part 64 on the fin stack 60 to fill the pipeline part 64 with nitrogen.

[0252] In some embodiments, a nitrogen filling device 710 is disposed inside a nitrogen filling chamber 740, the nitrogen filling chamber 740 is provided with an installation port, and a nitrogen filling pipeline 711 extends from the installation port to the outside of the nitrogen filling chamber 740.

[0253] The nitrogen filling chamber 740 is supported by outriggers directly above the nitrogen filling station. The installation port is located on the bottom wall of the nitrogen filling chamber 740. The nitrogen filling pipeline 711 extends from directly below the nitrogen filling chamber 740, and the nitrogen filling connector 720 is connected to the nitrogen filling pipeline 711.

[0254] For details, please refer to the following: Figure 44 , Figure 45In some embodiments of this application, the nitrogen filling connector 720 is detachably connected to the nitrogen filling pipeline 711. The end of the nitrogen filling connector 720 connected to the nitrogen filling pipeline 711 is provided with a connecting end. An internal thread is formed on the inner wall of the connecting end. An external thread is formed at the end of the nitrogen filling pipeline 711. The nitrogen filling pipeline 711 is threadedly connected to the connecting end.

[0255] During the nitrogen filling process, the nitrogen filling robot 730 grips the nitrogen filling pipe 711 above the nitrogen filling docking part 720 and pulls the nitrogen filling pipe 711 down onto the pipe part 64. The pipe part 64 is guided into the nitrogen filling pipe 711 through the nitrogen filling docking part 720 and connected to the nitrogen filling pipe 711. Then, the nitrogen filling device 710 delivers nitrogen gas into the pipe part 64.

[0256] In order to accurately guide the pipe fitting 64 into the nitrogen filling pipe 711, the minimum inner diameter of the docking channel shall not be greater than the inner diameter of the nitrogen filling pipe 711.

[0257] refer to Figure 46 In other embodiments, the nitrogen filling connector 720 is integrally formed with the nitrogen filling pipeline 711, and the nitrogen filling connector 720 is generally horn-shaped.

[0258] refer to Figure 47 In other embodiments, in order to achieve automatic upward reset of the nitrogen filling pipeline 711 after nitrogen filling, an elastic element 750 is designed between the nitrogen filling pipeline 711 and the nitrogen filling chamber 740. One end of the elastic element 750 is fixed to the inner wall of the nitrogen filling chamber 740, and the other end is connected to the nitrogen filling pipeline 711 located inside the nitrogen filling chamber 740. When the nitrogen filling pipeline 711 moves outward to the state of docking with the pipeline component 64, the elastic element 750 is compressed. After nitrogen filling is completed, the nitrogen filling robot 730 releases the nitrogen filling pipeline 711, and the elastic element 750, under its own restoring force, drives the nitrogen filling pipeline 711 to move upward and reset.

[0259] In some other embodiments, an elastic element 750 is provided between the nitrogen filling pipeline 711 and the nitrogen filling chamber 740. One end of the elastic element 750 is fixed to the outside of the installation port, and the other end is connected to the nitrogen filling pipeline 711 located outside the nitrogen filling chamber 740. When the nitrogen filling pipeline 711 moves outward to the state of docking with the pipeline component 64, the elastic element 750 is stretched. After the nitrogen filling is completed, the nitrogen filling robot 730 releases the nitrogen filling pipeline 711, and the elastic element 750 drives the nitrogen filling pipeline 711 to move upward and reset under its own restoring force.

[0260] In other embodiments, a flexible section is formed on the nitrogen filling line 711 to enable the nitrogen filling line 711 to be retractable relative to the mounting port.

[0261] The elastic pipe section is at least one section of the nitrogen filling pipe 711. During the nitrogen filling process, the elastic pipe section is stretched. After the nitrogen filling is completed, the elastic pipe section retracts under its own elasticity, thereby realizing the upward repositioning of the nitrogen filling docking part 720.

[0262] The nitrogen filling clamp 732 includes a clamping drive and a jaw assembly 733 connected to the clamping drive. The jaw assembly 733 includes a first jaw 7331 and a second jaw 7332 symmetrically arranged. Both the first jaw 7331 and the second jaw 7332 have clamping recesses 7333 formed on them. The size of the clamping recesses 7333 is adapted to the outer diameter of the nitrogen filling pipeline 711. The nitrogen filling pipeline 711 is used to clamp between the clamping recesses 7333.

[0263] The specific connection between the clamping drive and the first gripper 7331 and the second gripper 7332, and the implementation of the switching of the first gripper 7331 and the second gripper 7332, are existing technologies and will not be described in detail here.

[0264] Similarly, the nitrogen-filling robot body 731 also includes a nitrogen-filling robot base 730, a nitrogen-filling robot large arm 730, and a nitrogen-filling robot small arm connected in sequence.

[0265] In addition, the nitrogen filling robot 730 also includes a robot motor and a vision camera. The base of the nitrogen filling robot 730 is fixed to the ground by bolts, and the robot motor is connected to the base of the nitrogen filling robot 730 by bolts. The base, the upper arm and the lower arm of the nitrogen filling robot 730 are all connected by sliding joints. The vision camera is set on the nitrogen filling fixture 732 and is used to obtain the position information of the fin stack 60 and the positioning pin 62.

[0266] After nitrogen purging is completed, the fin conveyor line 40 drives the fin stack 60 forward to the welding station for welding, and then to the helium inspection station for welding status inspection. When the heat exchanger is an outdoor heat exchanger, after the helium inspection is completed, the fin stack 60 also needs to be bent by the bending equipment 49 to finally form the heat exchanger.

[0267] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An intelligent production line for air conditioners, characterized in that, This includes an outdoor unit intelligent production line, which comprises: Assembly lines include: Multiple assembly stations, each of which is equipped with a first robot, the first robot being configured to automatically complete the work tasks of the assembly station; A first conveyor line, wherein the plurality of assembly stations are arranged sequentially along the conveying direction of the first conveyor line, and the first conveyor line is configured to convey materials; The material supply line includes: The material warehouse is configured to store the materials required by the assembly line. The materials required by any of the assembly stations are placed in the material warehouse in the form of material frames as storage units. The material warehouse is provided with multiple material placement areas. A second conveyor line is configured to convey the material frame; The second robot is configured to transfer the material box between the material bin and the second conveyor line; The material box is configured to transfer between the first conveyor line and the second conveyor line; The intelligent air conditioner production line also includes an indoor unit intelligent production line, which includes multiple assembly stations arranged sequentially along the fourth conveyor line. The indoor unit intelligent production line also includes an indoor heat exchanger spraying station, which uses a heat exchanger spraying system to spray the indoor heat exchanger. Along the conveying direction of the fourth conveyor line, the indoor heat exchanger spraying station is located downstream of the indoor heat exchanger installation station. The heat exchanger includes: heat exchange tubes configured to circulate refrigerant; a plurality of spaced-apart fins, each of which is provided with a perforation through which the heat exchange tubes pass; The heat exchanger coating system includes: A painting robot is equipped with a spray head configured to spray paint onto the fins; A paint can is configured to supply paint to the spray head, the paint containing a capsule portion filled with a repair agent; A vision device is configured to acquire image information of the heat exchanger; The control system communicates with the spraying robot and the vision device. The control system is configured to analyze the image information of the heat exchanger to obtain the size data information of the heat exchanger in order to control the movement of the spray head. A magnetic field generating device is configured to emit a magnetic field toward the heat exchanger; The capsule is configured to move toward the perforation under the influence of the magnetic field, and the capsule is also configured to rupture when subjected to external force to release the internal repair agent and repair the coating of the fins.

2. The intelligent production line for air conditioners according to claim 1, characterized in that, The material box is provided with a first identification code, and the material placement area is provided with a second identification code. The first identification code, the second identification code, and the assembly station have a one-to-one correspondence. The assembly station is equipped with a first visual inspection device, which is configured to detect the first identification code. The second robot is equipped with a second vision detection device, which is configured to detect the second identification code.

3. The intelligent production line for air conditioners according to claim 1, characterized in that, When the material box placed on the assembly station is empty, the assembly station sends a replenishment request to the control terminal, the control terminal sends a replenishment instruction to the material replenishment line, the second robot picks up and places the material box in the material bin onto the second conveyor line, and the material box is transported to the corresponding assembly station via the first conveyor line.

4. The intelligent production line for air conditioners according to claim 1, characterized in that, The second conveyor line includes an AGV, and the second robot is configured to transfer the material box between the material bin and the AGV, the AGV being configured to transport the material box to the first conveyor line.

5. The intelligent production line for air conditioners according to any one of claims 1 to 4, characterized in that, The plurality of assembly stations are arranged in at least two spatial areas, which are arranged vertically, and materials are transported between two adjacent spatial areas via a first conveying device.

6. The intelligent production line for air conditioners according to claim 5, characterized in that, Along the material conveying direction, the first conveyor line located in any of the said spatial areas transfers the empty material frame between the second conveyor line and the last said assembly station.

7. The intelligent production line for air conditioners according to claim 5, characterized in that, Along the material conveying direction, the first conveyor line located in any of the aforementioned spatial areas transfers the fully loaded material frames between the first assembly station and the second conveyor line.

8. The intelligent production line for air conditioners according to claim 5, characterized in that, The material supply line includes multiple sub-material supply lines, which are configured to correspond to the multiple spatial regions.

9. The intelligent production line for air conditioners according to any one of claims 1 to 4, characterized in that, The assembly line includes an outdoor heat exchanger installation station, where a heat exchanger installation robot is installed, and the heat exchanger installation robot is equipped with heat exchanger clamps. The outdoor heat exchanger is placed vertically in the material frame, and the heat exchanger clamp is configured to clamp the outdoor heat exchanger and the material frame.

10. The intelligent production line for air conditioners according to claim 9, characterized in that, The outdoor heat exchanger includes a heat exchanger section 1, a heat exchanger section 2, and a heat exchanger section 3 connected in sequence. The heat exchanger section 1 and the heat exchanger section 3 are arranged opposite to each other and parallel to each other. The heat exchanger section 2 is arc-shaped. The outdoor heat exchanger is placed vertically in the material frame. The material frame for placing the outdoor heat exchanger is provided with a first limiting part and a second limiting part arranged opposite to each other. The first limiting part is configured to limit the end of one section of the heat exchanger, and the second limiting part is configured to limit the two sections of the heat exchanger. The heat exchanger clamp is configured to clamp one section of the heat exchanger.

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